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WO2015062061A1 - 一种传输方法和装置 - Google Patents

一种传输方法和装置 Download PDF

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Publication number
WO2015062061A1
WO2015062061A1 PCT/CN2013/086383 CN2013086383W WO2015062061A1 WO 2015062061 A1 WO2015062061 A1 WO 2015062061A1 CN 2013086383 W CN2013086383 W CN 2013086383W WO 2015062061 A1 WO2015062061 A1 WO 2015062061A1
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WO
WIPO (PCT)
Prior art keywords
data
crystal oscillator
difference
oscillator frequency
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/086383
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English (en)
French (fr)
Inventor
杨讯
罗毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201380077340.8A priority Critical patent/CN105309018B/zh
Priority to PCT/CN2013/086383 priority patent/WO2015062061A1/zh
Publication of WO2015062061A1 publication Critical patent/WO2015062061A1/zh
Priority to US15/134,062 priority patent/US10028242B2/en
Anticipated expiration legal-status Critical
Priority to US16/007,618 priority patent/US10602469B2/en
Priority to US16/798,212 priority patent/US10979992B2/en
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/0035Synchronisation arrangements detecting errors in frequency or phase
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • H04W56/0015Synchronization between nodes one node acting as a reference for the others

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a transmission method and apparatus. Background technique
  • a multi-antenna space resource is constructed by using multiple antennas, and these multi-dimensional space resources form multiple parallel paths; wireless stations can use these parallel channels to transmit multiple Road signal, increasing the data transmission rate.
  • the station equipped with more antennas can support simultaneous transmission of data with a plurality of stations equipped with fewer antennas.
  • DL MU-MIMO downlink multi-user ⁇
  • the station transmission data of multiple antenna numbers is called uplink multi-user ⁇ (UL MU-MIMO).
  • UL MU-MIMO uplink multi-user ⁇
  • the interference problem of the network has become a key factor hindering the further improvement of network capacity.
  • Eliminating or even using interference to increase throughput from multiple senders has become an important trend, such as cooperative transmission, coordinated beamforming, and interference alignment.
  • corresponding adjustments need to be made at the transmitting end. For example: In order to support collaborative transmission, all data must be sent synchronously with the same data at multiple senders and synchronized to the receiver.
  • Embodiments of the present invention provide a transmission method and apparatus, which reduce overhead and improve work efficiency in applications of cooperative transmission, such as synchronization, data sharing, channel information acquisition, and data transmission. At the same time, you can also extend the application scenario.
  • a transmission method which is applied to a coordinated transmission, where the method includes: an access point AP acquires a parameter value; wherein, the parameter value a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP or a delay difference of the AP with respect to a reference AP; when the AP simultaneously transmits data with the reference AP, the AP according to the The parameter values compensate for phase differences or time differences.
  • the parameter value is a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP, where the access point AP obtains a parameter value, including:
  • the parameter value is a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP, where the access point AP obtains a parameter value, including:
  • Transmitting a crystal frequency of the AP to the primary AP so that the primary AP selects a crystal frequency of the reference AP and calculates a crystal frequency and a reference of the AP according to a crystal frequency of the reference AP and a crystal frequency of the AP
  • the frequency difference of the crystal frequency of the AP receiving the frequency difference between the crystal frequency of the AP transmitted by the primary AP and the crystal frequency of the reference AP.
  • the parameter value is a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP
  • the access point AP obtains a parameter value, including: Transmitting the symbol of the first channel measurement to the station STA twice, so that the STA calculates the first channel matrix of the AP twice according to the symbol measured by the first channel, and according to the first channel matrix and The obtained second channel matrix calculates a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP; wherein, the channel parameter matrix of the first channel matrix and the second channel matrix are unchanged
  • the second channel matrix is a channel matrix calculated by the STA according to the second channel measured symbol sent by the reference AP and the reference AP; the crystal frequency of the AP sent by the receiving station STA and the reference AP The frequency difference of the crystal frequency.
  • the parameter value is a frequency difference between a crystal frequency of the AP and a reference AP
  • the access point AP acquires a parameter value, including: repeating at least twice Transmitting a symbol of the first channel measurement to the station STA, so that the STA and the reference AP calculate the first channel matrix of the AP twice according to the symbol measured by the first channel and according to the first channel matrix Calculating, by the second channel matrix, a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP; wherein, a channel parameter matrix of the first channel matrix and the second channel matrix is unchanged, the second channel The matrix is a channel matrix calculated by the STA according to the second channel measured symbol sent by the reference AP, and the crystal frequency of the AP transmitted by the reference AP and the crystal frequency of the reference AP is received.
  • the parameter value is a delay difference of the AP with respect to a reference AP, where the access point AP acquires a parameter value, including: receiving a signal sent by the STA a frame; wherein the signal frame carries a reference time; and the sum of the transmission delay and the propagation delay of the STA is calculated according to the reference time The value of the sum of the transmission delay and the propagation delay of the STA obtained is subtracted from the sum of the transmission delay and the propagation delay of the STA obtained by the reference AP, and the propagation delay difference with respect to the reference AP is obtained.
  • the second aspect provides a transmission method, where the method is applied to the coordinated transmission, where the method includes: the station STA receives the symbol measured by the first channel that is sent by the access point AP at least twice; a second channel measurement symbol; calculating a first channel matrix with the AP according to the symbol measured by the first channel; calculating a second channel matrix with the reference AP according to the second channel measurement symbol; A channel matrix and the second channel matrix are calculated to obtain a frequency difference of a crystal frequency of the AP and the reference AP.
  • the obtaining, according to the first channel matrix and the second channel matrix, obtaining a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP includes: obtaining a first difference according to the first channel matrix; wherein, the first difference is a frequency difference between a local crystal frequency and the AP crystal frequency; and obtaining a second according to the second channel matrix a difference value, wherein the second difference is a frequency difference between the local crystal frequency and the reference AP crystal frequency; and calculating, according to the first difference and the second difference, a crystal frequency of the AP Frequency difference of the crystal frequency of the reference AP; transmitting a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP to the
  • calculating, according to the first channel matrix and the second channel matrix, obtaining a crystal frequency of the AP and the reference AP a frequency difference of the crystal frequency comprising: obtaining a first difference according to the first channel matrix; wherein, the first difference is a frequency difference between a local crystal frequency and the AP crystal frequency; The channel matrix obtains a second difference; wherein the second difference is a frequency difference between the local crystal frequency and the reference AP crystal frequency; and the first difference and the second difference are sent to the reference An AP, so that the reference AP calculates a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP according to the first difference and the second difference, and the crystal of the AP is A frequency difference between the frequency and the crystal frequency of the reference AP is sent to the AP.
  • the third aspect provides a transmission method, where the method is applied to the coordinated transmission, where the method includes: the access point AP determines the data type of the data sent by the acquired STA; if the data type of the data is jointly sent, according to the indication The information is stored in the buffer; when the primary AP sends the data, the AP reads the buffer and sends the data in the buffer; wherein the primary AP is any AP with control function .
  • the buffer is an access type AC-JT buffer that is jointly sent, and the data type of the AP determining data includes: a joint according to the data itself The sent JT-IDX determines the data type of the data.
  • the indication information is a data transmission order carried by the data itself, and if the data type of the data is jointly sent, according to the indication
  • the information is stored in the buffer, and includes: if the data type of the data is used for joint transmission, storing the data in the AC-JT cache according to a data transmission order carried by the data itself.
  • the indication information is an indication data transmission order indicated in the command, where the data type of the data is And sending the data to the buffer according to the indication information, including: if the data type of the data is joint sending, classifying the data as an AC-JT access type;
  • the method further includes: if the data type of the data is not jointly sent, according to the data itself
  • the carried service classification information stores the data in an access type queue corresponding to the data.
  • the buffer is a joint transmission buffer JT Buffer
  • the data type of the AP determining data includes: sending data that needs to be jointly sent according to the acquired STA Instructing to select data to be jointly sent from the local access type buffer; wherein the local access type includes: a voice access type AC-VO, a video access type AC-VI, and a maximum effort access type AC – Access type AC-BK of the BE or background; confirm that the data type of the data is a joint transmission.
  • the indication information is a data sending sequence indicated by an instruction command pre-existing in the JT Buffer buffer, where the data type of the data is For the joint sending, the data is stored in the buffer according to the indication information, including:
  • the data type of the data is a joint transmission, storing the data in the JT Buffer buffer according to the data transmission order indicated by the instruction command pre-existing in the JT Buffer buffer; wherein, the instruction The command is that the AP is stored in the JT Buffer buffer.
  • a fourth aspect provides a transmission method, where the method is as follows: the access point AP receives channel information sent by any STA; Transmitting the channel information to the primary AP, so that the primary AP calculates a precoding matrix according to the channel information and the precoding criterion, and sends the information to the AP by using the indication information.
  • a precoding matrix and a flow indication corresponding to all the APs the flow indication is used to indicate that each of the APs uses a portion of the precoding matrix and a corresponding number of flows;
  • the acquiring a pre-precoding matrix according to the precoding matrix includes: calculating, by using the obtained flow indication and the precoding matrix, the sub pre An encoding matrix; wherein the stream indication carries a sub-matrix of the sub-precoding matrix.
  • the fifth aspect provides a transmission method, where the method is applied to the coordinated transmission, where the method includes: the primary AP sends data to the station STA; wherein the data may indicate all APs and STAs participating in the coordinated transmission;
  • an AP for use in cooperative transmission, including: an acquiring unit, configured to acquire a parameter value, where the parameter value is a frequency difference between a crystal oscillator frequency of the AP and a crystal frequency of the reference AP or a delay difference of the AP with respect to a reference AP;
  • the parameter value is a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP
  • the acquiring unit includes: a receiving module, configured to receive the main The crystal frequency of the reference AP sent by the AP; wherein the primary AP is any AP with a control function;
  • a calculation module configured to calculate, according to a crystal frequency of the reference AP, a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP.
  • the parameter value is a frequency difference between a crystal frequency of the AP and a reference crystal frequency of the reference AP
  • the acquiring unit further includes: a sending module, configured to: Transmitting a crystal frequency of the AP to the primary AP, so that the primary AP selects a crystal frequency of the reference AP and calculates a crystal frequency and a reference of the AP according to a crystal frequency of the reference AP and a crystal frequency of the AP The frequency difference of the crystal frequency of the AP; the receiving module is further configured to receive a frequency difference between a crystal frequency of the AP sent by the primary AP and a crystal frequency of the reference AP.
  • the parameter value is a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP
  • the sending module is further configured to send the transmission at least twice. Transmitting the symbol of the first channel to the station STA, so that the STA calculates the channel matrix with the AP first according to the symbol measured by the first channel, and according to the first channel matrix and the obtained second a channel matrix calculates a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP; wherein, a channel parameter matrix of the first channel matrix and the second channel matrix are unchanged, the second channel The matrix is a channel matrix calculated by the STA according to the second channel measured symbol sent by the reference AP and the reference AP;
  • the receiving module is further configured to receive a frequency difference between a crystal frequency of the AP sent by the STA and a crystal frequency of the reference AP.
  • the parameter value is a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP
  • the sending module is further configured to send the transmission at least twice.
  • First channel measured symbol to station a STA, so that the STA and the reference AP calculate the first channel matrix of the AP twice according to the symbol measured by the first channel and calculate the first channel matrix and the second channel matrix according to the first channel matrix and the second channel matrix a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP; wherein, a channel parameter matrix of the first channel matrix and the second channel matrix is unchanged, and the second channel matrix is the STA according to the Referring to the channel matrix of the reference AP calculated by the second channel measured symbol sent by the AP, the receiving module is further configured to receive the crystal oscillator frequency of the AP and the crystal frequency of the reference AP sent by the reference AP Frequency difference.
  • the parameter value is a delay difference of the AP with respect to the reference AP
  • the acquiring unit further includes: the receiving module, and is further configured to receive the STA a signal frame that is sent, where the signal frame carries a reference time; the calculation module is further configured to calculate, according to the reference time, a sum of a transmission delay and a propagation delay of the STA; Subtracting the obtained value of the sum of the transmission delay and the propagation delay of the STA from the sum of the transmission delay and the propagation delay of the STA obtained by the reference AP, and obtaining a propagation delay difference with respect to the reference AP and The processing delay difference of the sending, where the sum of the sending delay and the propagation delay of the STA obtained by the reference AP is calculated by the reference AP according to the reference time and sent to the AP.
  • a STA for use in cooperative transmission, including: a receiving unit, configured to receive, at least two times, a symbol of a first channel measurement sent by an access point AP; and the receiving unit is further configured to repeat at least And receiving, by the reference unit, a symbol of the second channel measurement sent by the reference AP, and a calculating unit, configured to calculate, according to the symbol measured by the first channel, a first channel matrix with the AP; Symbol calculation of the second channel measurement and the reference A second channel matrix of the AP; an obtaining unit, configured to obtain, according to the first channel matrix and the second channel matrix, a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP.
  • the acquiring unit includes: an acquiring module, configured to obtain a first difference according to the first channel matrix; wherein, the first difference is a local crystal oscillator a frequency difference between the frequency and the AP crystal frequency; the obtaining module is further configured to obtain according to the second channel matrix; wherein, the second difference is a frequency of a local crystal frequency and the reference AP crystal frequency Difference
  • a calculation module configured to calculate, according to the first difference value and the second difference, a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP;
  • a sending unit configured to send a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP to the AP.
  • the acquiring unit further includes: the acquiring module, configured to obtain a first difference according to the first channel matrix; wherein, the first difference The value is a frequency difference between the local crystal frequency and the AP crystal frequency; the obtaining module is further configured to obtain a second difference according to the second channel matrix; wherein, the local crystal frequency and the reference AP a frequency difference of the crystal frequency; a sending module, configured to send the first difference and the second difference to the reference AP, so that the reference AP is configured according to the first difference and the second The difference calculation calculates a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP, and sends a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP to the AP.
  • the eighth aspect provides an AP, which is used in a coordinated transmission, and includes: a determining unit, configured to determine a data type of the data sent by the acquired STA; and a processing unit, configured to: if the data type of the data is jointly sent, And storing the data in a buffer according to the indication information; when the primary AP sends data, the AP reads the buffer and sends the buffer
  • the data of the master AP is any AP with control function.
  • the buffer is an access type AC-JT buffer that is jointly sent
  • the determining unit is specifically configured to: send according to the joint carried by the data itself Indicates the data type of JT-IDX judgment data.
  • the indication information is a data transmission sequence carried by the data itself, and the processing unit includes:
  • the first processing module is configured to: if the data type of the data is a joint transmission, store the data in the AC-JT buffer according to a data transmission sequence carried by the data itself.
  • the indication information is an indication data transmission sequence indicated in the command
  • the processing unit further includes:
  • a second processing module configured to classify the data as an AC-JT access type if the data type of the data is a joint transmission
  • the second processing module is further configured to store the data in the AC-JT buffer according to the data sending sequence indicated in the indication command; wherein the indication command is carried in the data.
  • the AP further includes: a storage unit, configured to: if the data type of the data is not jointly sent, And storing the data in an access queue corresponding to the data according to the service classification information carried by the data itself.
  • the buffer is a joint transmission buffer JT Buffer
  • the determining unit includes:
  • a selection module configured to select, according to the obtained data indication that the STA needs to be jointly sent, the data that needs to be jointly sent from the local access type buffer; wherein the local access type includes: a voice access type AC VO, video access type AC VI, best effort The access type AC-BE or the background access type AC-BK; an acknowledgment module, configured to confirm that the data type of the data is a joint transmission.
  • the indication information is a data sending sequence that is instructed by an instruction command pre-existing in the JT Buffer buffer
  • the processing unit further includes: a processing module, configured to: if the data type of the data is jointly sent, storing the data in the JT Buffer buffer according to a data sending sequence indicated by the instruction command pre-existing in the JT Buffer buffer;
  • the command command is that the AP is stored in the JT Buffer buffer.
  • the ninth aspect provides an AP, which is used in cooperative transmission, and includes: a receiving unit, configured to receive channel information sent by a station STA, and a calculating unit, configured to perform, according to the precoding, a quasi H'j and the channel information, I. Calculating a precoding matrix;
  • a sending unit configured to send the channel information to the primary AP, so that the primary AP calculates a precoding matrix according to the channel information and precoding criteria, and sends the indication information to the AP by using indication information;
  • the indication information carries the precoding matrix and all the flow indications corresponding to the APs; the flow indication is used to indicate that each of the APs uses a part of the precoding matrix and a corresponding number of flows;
  • the receiving unit is further configured to receive a precoding matrix sent by the primary AP, an acquiring unit, configured to acquire a sub precoding matrix according to the precoding matrix, and an encoding unit, configured to input according to the sub precoding matrix
  • the data is encoded.
  • the acquiring unit is specifically used to:
  • the tenth aspect provides a primary AP, which is used in cooperative transmission, and includes: a sending unit, configured to send data to the station STA, where the data may indicate all APs and STAs participating in the coordinated transmission; and the receiving unit is configured to receive an acknowledgement ACK frame sent by the STA after receiving the data, Therefore, any AP participating in the coordinated transmission determines its own data transmission time to avoid the occurrence of a collision; wherein the ACK frame carries all the APs and STAs participating in the coordinated transmission.
  • the primary AP further includes: an acquiring unit, configured to obtain a response block acknowledgement that is successfully sent by any one of the STAs
  • an AP for use in cooperative transmission, where the AP includes: at least one processor, a memory, a communication interface, and a bus, where the at least one processor, the memory, and the communication interface are connected by a bus and complete each other. Inter-communication, the memory is used to store program code, wherein:
  • the processor is configured to call a program code in the memory, to perform the following operations: acquiring a parameter value, where the parameter value is a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP, or The delay difference of the AP relative to the reference AP; when the AP simultaneously transmits data with the reference AP, the phase difference or the time difference value is compensated according to the parameter value.
  • the parameter value is a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP
  • the processor is specifically configured to: receive the primary AP to send The reference antenna frequency of the AP; wherein, the primary AP is any AP having a control function; and calculating a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP according to the crystal frequency of the reference AP.
  • the parameter value is a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP
  • the processor is specifically configured to: send the AP Crystal frequency to the primary AP to facilitate selection of the primary AP Calculating a crystal frequency of the AP and calculating a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP according to a crystal frequency of the reference AP and a crystal frequency of the AP; receiving a crystal of the AP sent by the primary AP The frequency difference between the frequency and the crystal frequency of the reference AP.
  • the parameter value is a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP
  • the processor is specifically configured to: repeat at least twice Transmitting a symbol of the first channel measurement to the station STA, so that the STA calculates the first channel matrix of the AP twice according to the symbol measured by the first channel, and according to the first channel matrix and the obtained a two-channel matrix calculates a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP; wherein, a channel parameter matrix of the first channel matrix and the second channel matrix are unchanged, the second The channel matrix is a channel matrix calculated by the STA according to the second channel measured symbol sent by the reference AP, and the crystal frequency of the AP sent by the receiving station STA and the crystal frequency of the reference AP The frequency difference.
  • the parameter value is a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP
  • the processor is specifically configured to: repeat at least twice Transmitting a symbol of the first channel measurement to the station STA, so that the STA and the reference AP calculate the first channel matrix of the AP twice according to the symbol measured by the first channel and according to the first channel matrix Calculating, by the second channel matrix, a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP; wherein, a channel parameter matrix of the first channel matrix and the second channel matrix is unchanged, the second channel a matrix is a channel matrix calculated by the STA according to a symbol measured by the second signal sent by the reference AP, and the reference AP;
  • the parameter value is the a delay difference of the AP with respect to the reference AP
  • the processor is specifically configured to: receive a signal frame sent by the STA, where the signal frame carries a reference time; and when the STA is sent according to the reference time The sum of the delay and the propagation delay; the sum of the obtained transmission delay and the propagation delay of the STA is subtracted from the sum of the transmission delay and the propagation delay of the STA obtained by the reference AP, and the relative value is obtained.
  • a STA for use in cooperative transmission, where the STA includes: at least one processor, a memory, a communication interface, and a bus, where the at least one processor, the memory, and the communication interface are connected through a bus and complete each other.
  • the communication is used to store the program code
  • the processor is configured to call the program code in the memory to perform the following operations: repeating the first channel measurement sent by the access point AP at least twice a symbol for receiving a second channel measurement transmitted by the reference AP at least twice; calculating a first channel matrix with the AP according to the symbol measured by the first channel; calculating a symbol according to the second channel measurement symbol Referring to the second channel matrix of the AP; calculating, according to the first channel matrix and the second channel matrix, a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP.
  • the processor is specifically configured to: obtain a first difference according to the first channel matrix; wherein, the first difference is a local crystal frequency and a frequency difference of the AP crystal frequency; obtaining a second difference according to the second channel matrix, wherein the second difference is a frequency difference between the local crystal frequency and the reference AP crystal frequency; Calculating, according to the first difference value and the second difference, a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP; and transmitting a frequency of the crystal frequency of the AP and a crystal frequency of the reference AP Difference to the stated
  • the processor is specifically configured to: obtain a first difference according to the first channel matrix; wherein, the first difference is a local crystal frequency and a frequency difference of the AP crystal frequency; obtaining a second difference according to the second channel matrix; wherein, the second difference is a frequency difference between the local crystal frequency and the reference AP crystal frequency; a first difference and the second difference to the reference AP, so that the reference AP calculates a crystal frequency of the AP and the reference AP according to the first difference and the second difference a frequency difference of the crystal frequency, and transmitting a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP to the AP.
  • an AP for use in cooperative transmission, where the AP includes: at least one processor, a memory, a communication interface, and a bus, where the at least one processor, the memory, and the communication interface are connected through a bus and complete each other.
  • the memory is used to store program code, where: the processor is configured to call program code in the memory, to perform the following operations: determining a data type of the data sent by the acquired STA; The data type is a joint transmission, and the data is stored in the buffer according to the indication information; when the primary AP sends the data, the AP reads the buffer and sends the data in the buffer;
  • the primary AP is any AP with control functions.
  • the buffer is an access type AC JT buffer that is jointly sent, where the processor is specifically configured to: The data type of the data is judged according to the joint transmission indication JT_IDX carried by the data itself.
  • the indication information is a data transmission sequence carried by the data itself, and the processor is specifically configured to: if the data type of the data is In the case of joint transmission, the data is stored in the AC-JT buffer according to the data transmission sequence carried by the data itself.
  • the indication information is an order of sending data indicated in the command
  • the processor is specifically configured to:
  • the data type of the data is a joint transmission, the data is classified into an AC-JT access type;
  • the processor is further configured to: if the data type of the data is not jointly sent, store the data in an access queue corresponding to the data according to the service classification information carried by the data itself.
  • the buffer is a joint transmission buffer JT Buffer
  • the processor is specifically configured to: according to the acquired data indication that the STA sends to be jointly sent Selecting data to be jointly sent from the local access type buffer; wherein the local access types include: voice access type AC-VO, video access type AC-VI, maximum effort access type AC- Access type AC-BK of BE or background; confirm that the data type of the data is joint transmission.
  • the indication information is a data sending sequence indicated by an instruction command pre-existing in the JT Buffer buffer
  • the processor is specifically configured to: if the data type of the data is jointly sent, storing the data in the JT Buffer cache according to a data sending sequence indicated by the instruction command pre-existing in the JT Buffer buffer
  • the indication command is that the AP is stored in the JT Buffer buffer.
  • an AP in a fourteenth aspect, includes: at least one processor, a memory, a communication interface, and a bus, wherein the at least one processor, the memory, and the communication interface pass the bus.
  • the memory is for storing program code, wherein:
  • the processor is configured to invoke program code in the memory to: receive channel information sent by the station STA; send the channel information to the primary AP, so that the primary AP is configured according to the channel information and
  • the coding criterion calculates a precoding matrix and sends the indication information to the AP by using the indication information, where the indication information carries the precoding matrix and all the flow indications corresponding to the AP; the flow indication is used to indicate each The AP uses a portion of the precoding matrix and a corresponding number of streams;
  • the processor is specifically configured to:
  • a primary AP includes: at least one processor, a memory, a communication interface, and a bus, where the at least one processor, the memory, and the communication interface are connected by using a bus.
  • the memory is used for storing a sequence code
  • the processor is configured to call a program code in a memory, to perform the following operations: sending data to a station STA; wherein the data may indicate all APs and STAs participating in cooperative transmission; Determining an ACK frame sent by the STA after receiving the data, so that any AP participating in the coordinated transmission determines its own data transmission time, and avoids the occurrence of a collision; wherein the ACK frame carries the coordinated transmission. All APs and STAs.
  • the processor is further configured to: obtain a response block acknowledgement BA that is successfully transmitted by any one of the STAs.
  • the transmission method and apparatus provided by the embodiments of the present invention provide synchronization and data for applying a cooperative transmission scheme to an actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the sharing of information, the acquisition of channel information, and the technical solution of the data method reduce overhead and improve work efficiency. At the same time, you can also extend the application scenario.
  • FIG. 1 is a schematic flowchart diagram of a transmission method according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of another transmission method according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of still another transmission method according to an embodiment of the present invention
  • FIG. 4 is still another embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a transmission method according to another embodiment of the present invention
  • FIG. 6 is a schematic flowchart of another transmission method according to another embodiment of the present invention
  • FIG. 7 is a schematic flowchart diagram of still another transmission method according to another embodiment of the present invention
  • FIG. 9 is a schematic flowchart of a transmission method according to another embodiment of the present invention
  • FIG. 10 is another schematic diagram of a transmission method according to another embodiment of the present invention
  • FIG. 11 is a schematic flowchart of still another transmission method according to another embodiment of the present invention
  • FIG. 12 is a schematic structural diagram of an enhanced distributed channel access supporting joint transmission according to an embodiment of the present invention; schematic diagram;
  • FIG. 13 is a schematic structural diagram of another enhanced distributed channel access supporting joint transmission according to an embodiment of the present invention.
  • FIG. 14 is a schematic flowchart of still another transmission method according to another embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of another enhanced distributed channel access supporting joint transmission according to an embodiment of the present invention.
  • FIG. 16 is a schematic flowchart of a transmission method according to still another embodiment of the present invention.
  • FIG. 17 is a transmission frame diagram of an AP applied to two cooperative transmissions according to an embodiment of the present invention.
  • FIG. 18 is a schematic flowchart of another transmission method according to another embodiment of the present invention
  • FIG. 19 is a schematic flowchart of a data transmission process according to an embodiment of the present invention
  • Schematic diagram of the structure of the AP
  • FIG. 21 is a schematic structural diagram of another AP according to an embodiment of the present invention.
  • FIG. 22 is a schematic structural diagram of still another AP according to an embodiment of the present invention
  • FIG. 23 is a schematic structural diagram of still another AP according to an embodiment of the present invention.
  • FIG. 24 is a schematic structural diagram of a STA according to an embodiment of the present invention
  • FIG. 25 is a schematic structural diagram of another STA according to an embodiment of the present invention
  • FIG. 26 is a schematic structural diagram of still another STA according to an embodiment of the present invention
  • FIG. 28 is a schematic structural diagram of still another STA according to an embodiment of the present invention
  • FIG. 29 is a schematic structural diagram of another AP according to another embodiment of the present invention
  • FIG. 30 is a schematic structural diagram of another AP according to another embodiment of the present invention
  • FIG. 32 is a schematic structural diagram of another AP according to another embodiment of the present invention
  • FIG. 33 is another schematic diagram of another AP according to another embodiment of the present invention
  • FIG. 24 is a schematic structural diagram of a STA according to an embodiment of the present invention
  • FIG. 25 is a schematic structural diagram of another STA according to an embodiment of the present invention
  • FIG. 26 is a schematic structural diagram of still another STA according to an embodiment of the present invention
  • FIG. 34 is a schematic structural diagram of still another AP according to another embodiment of the present invention
  • FIG. 36 is a schematic structural diagram of a primary AP according to an embodiment of the present invention
  • FIG. 37 is a schematic structural diagram of still another AP according to another embodiment of the present invention
  • FIG. 38 is a schematic structural diagram of a STA according to another embodiment of the present invention
  • Figure 39 is still another embodiment of the present invention
  • FIG. 40 is a schematic structural diagram of another AP according to another embodiment of the present invention
  • FIG. 41 is a schematic structural diagram of another main AP according to an embodiment of the present invention.
  • An embodiment of the present invention provides a transmission method, which is applied to cooperative transmission. Referring to FIG. 1, the method includes the following steps: 101.
  • An access point (AP) obtains a parameter value.
  • the parameter value is a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP or a delay difference of the AP with respect to the reference AP.
  • the transmission method provides information such as synchronization, data, and the like for applying a cooperative transmission scheme to an actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the technical solution of sharing, channel information acquisition and data method reduces overhead and improves work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides a transmission method, which is applied to cooperative transmission. Referring to FIG. 2, the method includes the following steps:
  • the station (Station, referred to as STA) repeats the symbol of the first channel measurement sent by the access point AP at least twice.
  • the STA receives the symbol of the second channel measurement sent by the reference AP at least twice.
  • the STA calculates a first channel matrix with the AP according to the symbol measured by the first channel.
  • the STA calculates a second channel matrix of the reference AP according to the symbol measured by the second channel.
  • the STA calculates, according to the first channel matrix and the second channel matrix, a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP.
  • the transmission method provided by the embodiment of the present invention provides information such as synchronization, data, and the like for applying a cooperative transmission scheme to an actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the technical solution of sharing, channel information acquisition and data method reduces overhead and improves work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides a transmission method, which is applied to cooperative transmission. Referring to FIG. 3, the method includes the following steps:
  • the access point AP determines the data type of the data sent by the obtained STA.
  • the AP stores the data in the buffer according to the indication information.
  • the primary AP When the primary AP sends data, the AP reads the buffer and sends the data in the buffer.
  • the primary AP is any AP with control functions.
  • the transmission method provided by the embodiment of the present invention provides information such as synchronization, data, and the like for applying a cooperative transmission scheme to an actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the technical solution of sharing, channel information acquisition and data method reduces overhead and improves work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides a transmission method, which is applied to cooperative transmission. Referring to FIG. 4, the method includes the following steps:
  • the access point AP receives channel information sent by the station STA.
  • the AP sends the channel information to the primary AP, so that the primary AP calculates the precoding matrix according to the channel information and the precoding criterion, and sends the information to the AP by using the indication information.
  • the indication information carries a precoding matrix and a flow indication corresponding to all APs; the flow indication is used to indicate a part of each AP that uses the precoding matrix and a corresponding flow number.
  • the AP receives a precoding matrix sent by the primary AP.
  • the AP acquires a sub-precoding matrix according to the precoding matrix.
  • the AP encodes the input data according to the sub-precoding matrix.
  • the transmission method provided by the embodiment of the present invention provides information such as synchronization, data, and the like for applying a cooperative transmission scheme to an actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission. Sharing, channel information acquisition and data
  • the technical solution of the method reduces the overhead and improves the work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides a transmission method, which is applied to cooperative transmission. Referring to FIG. 5, the method includes the following steps:
  • the primary AP sends data to the STA.
  • the data may indicate all APs and STAs participating in the cooperative transmission.
  • the primary AP receives an acknowledgement ACK frame sent by the STA after receiving the data, so that any AP participating in the coordinated transmission determines its own data transmission time to avoid collision.
  • the ACK frame carries all the APs and STAs participating in the coordinated transmission.
  • the transmission method provided by the embodiment of the present invention provides information such as synchronization, data, and the like for applying a cooperative transmission scheme to an actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the technical solution of sharing, channel information acquisition and data method reduces overhead and improves work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides a transmission method, where the parameter value is a frequency difference between a crystal oscillator frequency of the AP and a crystal oscillator frequency of the reference AP.
  • the method includes the following steps:
  • the information transmission methods provided are mainly applied to phase synchronization in the synchronization process in joint transmission, interference alignment, and coordinated beamforming.
  • the AP receives a crystal frequency of a reference AP sent by the primary AP.
  • the primary AP is any AP with control functions.
  • the AP calculates a frequency difference between the crystal frequency of the AP and the reference crystal frequency of the reference AP according to the crystal frequency of the reference AP.
  • the phase synchronization method in this embodiment mainly implements phase synchronization using an interconnected wired network.
  • the transmission method provided by the embodiment of the present invention provides information such as synchronization, data, and the like for applying a cooperative transmission scheme to an actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the technical solution of sharing, channel information acquisition and data method reduces overhead and improves work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides a transmission method, where the parameter value is a frequency difference between a crystal oscillator frequency of the AP and a crystal oscillator frequency of the reference AP.
  • the method includes the following steps:
  • the information transmission methods provided are mainly applied to phase synchronization in the synchronization process in joint transmission, interference alignment, and coordinated beamforming.
  • the AP sends the crystal frequency of the AP to the primary AP, so that the primary AP selects the crystal frequency of the reference AP and calculates a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP according to the crystal frequency of the reference AP and the crystal frequency of the AP.
  • the primary AP is any AP with control functions.
  • the AP receives a frequency difference between a crystal oscillator frequency of the AP sent by the primary AP and a crystal frequency of the reference AP.
  • the phase synchronization method in this embodiment mainly implements phase synchronization using an interconnected wired network.
  • Embodiments of the present invention can effectively cancel or compensate for the phase difference of the transmitted data caused by the difference of the crystal oscillators when the data is transmitted, so that the plurality of transmitting ends can transmit the data synchronously.
  • the transmission method provided by the embodiment of the present invention provides information such as synchronization, data, and the like for applying a cooperative transmission scheme to an actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the technical solution of sharing, channel information acquisition and data method reduces overhead and improves work efficiency. At the same time, you can also extend the application scenario.
  • Embodiments of the present invention provide a transmission method, which is applied to cooperative transmission, and has a parameter value
  • the frequency difference between the crystal frequency of the AP and the reference crystal frequency of the reference AP is as shown in FIG. 8.
  • the method includes the following steps:
  • the information transmission method provided in the present embodiment is mainly applied to joint transmission, interference alignment, and coordinated beamforming.
  • the phase synchronization method in this embodiment is implemented by a wireless network.
  • the AP sends the symbol measured by the first channel to the station STA at least twice, so that the STA calculates the first channel matrix with the AP twice according to the symbol measured by the first channel, and according to the first channel matrix and the obtained
  • the two-channel matrix calculates the frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP.
  • the channel parameter matrix of the first channel matrix and the second channel matrix are unchanged;
  • the second channel matrix is a channel matrix calculated by the STA according to the second signal measurement symbol sent by the reference AP and the reference AP.
  • the channel matrix is the phase difference caused by multiplying the channel parameter matrix by the frequency difference.
  • the time at which the symbol is measured for the initial transmission channel, ⁇ is the time at which the second transmission channel measures the symbol.
  • the transmission may be continuous transmission or discontinuous transmission, as long as the channel parameter matrix obtained by the two measurements can be ensured to be the same.
  • the STA repeats the symbol of the first channel measurement sent by the AP at least twice.
  • the STA receives the symbol of the second channel measurement sent by the reference AP at least twice.
  • the STA calculates a first channel matrix with the AP according to the symbol measured by the first channel.
  • the 805 STA calculates a second channel matrix with the reference AP based on the symbols measured by the second channel. Specifically, the STA calculates a first channel matrix with the AP according to the received symbols of the first channel measurement, and the STA is the STA .
  • reference AP is ⁇ ⁇ . Then, the channel matrix between them at times t2 and t3 can be ⁇ . ) and 7 ⁇ . ( ⁇ ).
  • W is the channel matrix at the time t from the transmitting end n to the receiving end m
  • w is the crystal frequency of the receiving end m.
  • the 806 STA obtains a first difference according to the first channel matrix.
  • the first difference is a frequency difference between the local crystal frequency and the AP crystal frequency.
  • the 807 STA obtains a second difference according to the second channel matrix.
  • the second difference is a frequency difference between the local crystal frequency and the reference AP crystal frequency.
  • AP .
  • 573 ⁇ 4 the channel matrix affected by the frequency difference between the local crystal frequency and the reference AP ( AP o ) crystal frequency (.- ⁇ .) is obtained according to the channel matrix of t2. .
  • the channel matrix at time t3 . . ) Obtain the phase production at this time: H ° ° e / H ° ° e - e - e .
  • is the time at which the symbol of the channel measurement is received for the second time.
  • the crystal frequency at which the symbol measured by the channel is transmitted for the first time, w .
  • the crystal frequency at which the receiving end 1 ⁇ receives the symbol of the channel measurement for the first time.
  • the frequency difference between the local crystal frequency and the crystal frequency of any AP (APn) may be (w r whisk_ ⁇ .). It should be noted that the local crystal frequency is calculated according to the first channel matrix.
  • a P crystal frequency refers to the explanation of calculating the local crystal frequency and the reference AP crystal frequency according to the second channel matrix, and details are not described herein again.
  • the 808 STA calculates a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP according to the first difference and the second difference. Specifically, the first difference and the second difference are subtracted, that is, the difference between ⁇ 5 " and 573 ⁇ 4 . and the difference between ⁇ 5 and 573 ⁇ 4 are subtracted:leton- . minus. - ⁇ . , can get any ⁇ ( ) and reference Frequency difference of the crystal frequency of AP ( AP ⁇ ) ⁇
  • the AP receives a frequency difference between a crystal frequency of the AP sent by the STA and a crystal frequency of the reference AP.
  • the AP compensates for the phase difference according to the frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP.
  • the method for compensating the phase difference may be directly multiplying the reciprocal of the phase difference when transmitting the data.
  • the method for compensating the phase difference is exemplified, and of course, it is not limited thereto, and may be implemented according to a specific implementation environment in a specific application. Choose the right method.
  • the channel measurement symbols in this embodiment may not be limited to one Orthogonal Frequency Division Multiplexing (OFDM symbol, for example, may be null data packet + null data packet announcement (Null Data Packet + Null Data Packet Announcement,
  • the format of the abbreviation NDPA+NDP can also be two common data frames.
  • the transmission method provided by the embodiment of the present invention is used in cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission. By providing a technical solution for synchronizing, sharing information such as data, data acquisition, and data method, the cooperative transmission scheme is applied to an actual network, which reduces overhead and improves work efficiency. At the same time, the application scenario can be extended.
  • An embodiment of the present invention provides a transmission method, where the parameter value is a frequency difference between a crystal oscillator frequency of the AP and a crystal oscillator frequency of the reference AP.
  • the method includes the following steps:
  • the information transmission method provided is mainly applied to phase synchronization in the synchronization process in joint transmission, interference alignment, and coordinated beamforming, and the phase synchronization method in this embodiment is implemented by a wireless network.
  • the AP sends the symbol of the first channel measurement to the STA at least twice to facilitate the STA.
  • the reference AP calculates the first channel matrix of the AP twice according to the symbol measured by the first channel and calculates the frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP according to the first channel matrix and the second channel matrix.
  • the channel parameter matrix of the first channel matrix and the second channel matrix are unchanged; the second channel matrix is a channel matrix calculated by the STA according to the second signal measurement symbol sent by the reference AP and the reference AP.
  • the STA repeats the symbol of the first channel measurement sent by the AP at least twice.
  • the STA repeats the symbol of the second channel measurement sent by the AP at least twice.
  • the STA calculates a first channel matrix with the AP according to the symbol measured by the first channel.
  • the STA calculates a second channel matrix of the reference AP according to the symbol measured by the second channel.
  • the STA obtains a first difference according to the first channel matrix.
  • the first difference is a frequency difference between the local crystal frequency and the AP crystal frequency.
  • the STA obtains a second difference according to the second channel matrix.
  • the second difference is a frequency difference between the local crystal frequency and the reference AP crystal frequency.
  • the STA sends the first difference and the second difference to the reference AP, so that the reference AP calculates a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP according to the first difference and the second difference, and The frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP is sent to the AP.
  • the AP receives a reference frequency difference between a crystal frequency of the AP sent by the AP and a crystal frequency of the reference AP.
  • the transmission method provided by the embodiment of the present invention provides information such as synchronization, data, and the like for applying a cooperative transmission scheme to an actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission. Sharing, channel information acquisition and data
  • the technical solution of the method reduces the overhead and improves the work efficiency. At the same time, you can also extend the application scenario.
  • Embodiments of the present invention provide a transmission method, which is applied to cooperative transmission, and has a parameter value
  • the delay difference of the AP relative to the reference AP is shown in FIG. 10.
  • the method includes the following steps:
  • the information transmission method provided in this implementation is mainly applied in the synchronization process in joint transmission, interference alignment, and coordinated beamforming.
  • phase synchronization Before the implementation of the embodiment of the present invention, the clock between the APs needs to be synchronized through the network interconnection.
  • IEEE Institute of Electrical and Electronic Engineers 1588 standard can be used to reduce the synchronization error to 10 ns.
  • the access point AP receives a signal frame sent by the STA.
  • the signal frame carries a reference time.
  • the purpose of this signal frame is to enable multiple APs to simultaneously calculate the delay from the STA to the AP.
  • the reference time may be the local time of the STA, or may be a time value that is arbitrarily set arbitrarily.
  • the delay consists of three parts delay: the processing delay of the transmitting end is 7 ⁇ , the channel propagation delay is 7 ⁇ , and the receiving end processes the delay ⁇ . Refer to STA ⁇ from the sender. To the receiving end
  • the 1003 AP subtracts the sum of the transmission delay and the propagation delay of the obtained STA from the sum of the transmission delay and the propagation delay of the STA obtained by the reference AP, and obtains the propagation delay difference and the transmission with respect to the reference AP.
  • the processing delay difference is
  • the sum of the transmission delay and the propagation delay of the STA obtained by the reference AP is calculated by the reference AP according to the reference time and sent to the AP.
  • the sum of the transmission delay obtained by the AP and the reference AP and the propagation delay are subtracted, so that the delay difference of the AP relative to the reference AP is obtained.
  • AP (APn) reaches 573 ⁇ 4 with respect to the reference AP (.).
  • the propagation delay difference is:
  • the processing delay of the sender is 7 ⁇ and the processing delay of the receiver is 7 ⁇ , which is affected by the implementation of the specific product. Different senders or receivers are different; but for a fixed sender or receiver, it is a certain value. .
  • the AP When the AP sends data simultaneously with the reference AP, the AP is based on the AP relative to the reference.
  • the delay difference of the AP compensates for the time difference.
  • the method for compensating for the time difference may be: when transmitting data at the same time, the AP advances or delays the time when the data is sent relative to the reference AP by the time difference.
  • the time difference between the AP and the reference AP is different.
  • the AP can obtain the time difference with respect to multiple STAs.
  • the specific time difference compensation needs to consider Orthogonal Frequency Division Multiplexing (OFDM). Under the constraint of the length of the Cyclic Prefix (CP), the symbol solves a time compensation amount for each AP, so that the delay of the AP reaching all STAs is smaller than the CP length used by the transmitted signal.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the compensated delay and delay difference need to satisfy the following inequality:
  • the transmission method provided by the embodiment of the present invention provides information such as synchronization, data, and the like for applying a cooperative transmission scheme to an actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the technical solution of sharing, channel information acquisition and data method reduces overhead and improves work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides a transmission method, which is applied to a coordinated transmission, and an access category joint transmission (AC-JT) buffer, which is shown in FIG.
  • the method includes the following steps:
  • the information transmission method provided in this implementation is mainly applied to the process of data sharing in the joint sending process.
  • the controller of the primary AP or the AP pre-sends the data to be jointly sent for the data that needs to be jointly sent, and the order that the data needs to be complied with when the joint is sent, and shares the data with other wired and shared networks.
  • AP access category joint transmission
  • the AP determines the data type of the data according to the joint transmission indication (JT-IDX) carried by the data itself.
  • JT-IDX joint transmission indication
  • the AP stores the data in the AC-JT buffer according to the data sending sequence carried by the data itself.
  • the AP classifies the data as an AC-JT access type.
  • the AP stores the data in the AC-JT buffer according to the data sending sequence indicated in the instruction command.
  • step 1102a the indication command is carried in the data.
  • step 1103b the following steps are performed after step 1102a and step 1103b:
  • the AP stores the data in the access type queue corresponding to the data according to the service classification information carried by the data.
  • the access queue corresponding to the data that is not used for joint transmission may be voice access.
  • Access Category Voice AC-VO
  • Access Category Video AC-VI
  • Access Category Best effort AC-BE
  • background access type Access Category background, AC-BK:
  • the Enhanced Distributed Channel Access Function (EDCAF) of the AC-JT type of buffer has the highest priority, but it needs to be activated when used for joint transmission.
  • the data in this implementation is from the Media Access Control (MAC) layer or higher.
  • an EDCA structure for supporting joint transmission of data is described by an enhanced access channel (EDCA) design. If step 1102a is performed, the EDCA structure is as shown in FIG. 12; The joint sending indication JT_IDX, the Media Access Control Service Data Unit (MSDU) and the user priority (UP) are in the same module. If the steps 1102b and 1103b are performed, the corresponding EDCA structure is as shown in FIG. 13; wherein the MSDU and the JT_IDX are used to indicate the first determining module and send the first indication information, and the MSDU and the UP are used to indicate the second determining module. .
  • the buffers in this embodiment belong to the queue, which is a first-in first-out structure, that is, the data that first enters the queue is first output from the queue.
  • the transmission method provided by the embodiment of the present invention provides information such as synchronization, data, and the like for applying a cooperative transmission scheme to an actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the technical solution of sharing, channel information acquisition and data method reduces overhead and improves work efficiency. At the same time, you can also extend the application scenario.
  • the embodiment of the present invention provides a transmission method, which is applied to a cooperative transmission.
  • the buffer is a Joint Transmission Buffer (JT Buffer).
  • JT Buffer Joint Transmission Buffer
  • the method includes the following steps:
  • the information transmission method provided in this implementation is mainly applied to the process of data sharing in the joint transmission process.
  • the controller of the primary AP or the AP pre-sends the data to be sent in the joint transmission and the order in which the data needs to be complied with when the joint transmission is performed.
  • the AP selects, according to the data indication that the acquired STA sends the joint transmission, the data that needs to be jointly sent from the local access type.
  • the local access types include: voice access type AC-VO, video access type AC-VI, best-effort access type AC-BE or background access type AC-BK.
  • the data type of the AP confirmation data is joint transmission.
  • the AP stores the data in the JT Buffer buffer according to the data sending order indicated by the instruction command pre-existing in the JT Buffer buffer.
  • the command command is stored in the JT Buffer buffer by the AP.
  • the EDCAF of the AC-JT type of buffer has the highest priority, but it only needs to be activated when used for joint transmission.
  • the buffers in this embodiment belong to the queue, which is a first-in first-out structure, that is, the data entering the queue first is first output from the queue.
  • an EDCA structure for supporting the data transmission of the joint transmission is illustrated by an design based on an Enhanced Distributed Channel Access (EDCA), and the EDCA structure is as shown in FIG.
  • the method in the application of cooperative transmission, such as synchronization, data sharing, channel information acquisition, and data transmission, provides sharing of synchronization information, data, and the like, and acquisition of channel information by applying a cooperative transmission scheme to an actual network.
  • the technical solution of the data method reduces the overhead and improves the work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides a transmission method, which is applied to cooperative transmission.
  • the method includes the following steps:
  • the information transmission method provided in the present embodiment is mainly applied to the process of joint transmission, interference alignment, and channel information acquisition in the coordinated beamforming process.
  • the AP and the STA are grouped according to certain criteria. In this embodiment, any AP that communicates with the primary AP is in the same group as the primary AP.
  • the AP receives channel information sent by the STA.
  • the AP sends the channel information to the primary AP, so that the primary AP calculates the precoding matrix according to the channel information and the precoding criterion, and sends the information to the AP by using the indication information.
  • the indication information carries a precoding matrix and a flow indication corresponding to all APs; the flow indication is used to indicate a part of each AP that uses the precoding matrix and a corresponding flow number.
  • the indication information may be sent by the primary AP in the form of broadcast information or may be sent by the primary AP to all APs one by one.
  • the primary AP receives channel information sent by the AP.
  • the primary AP calculates a precoding matrix according to channel information and precoding criteria.
  • the calculation of the precoding matrix in the embodiment may be calculated according to the flow indication information and the precoding criterion carried in the channel information, and may be specifically calculated by using the precoding matrix and the corresponding flow number of each AP indicated by the flow indication information. Get a precoding matrix.
  • the primary AP may be split according to the correspondence between the precoding matrix and any AP, and then the split precoding matrix is sent to the corresponding AP.
  • the AP receives a precoding matrix sent by the primary AP.
  • the AP calculates a sub-precoding matrix according to the obtained flow indication and the precoding matrix.
  • the stream indication carries a sub-matrix of the sub-precoding matrix.
  • the flow indication information carries a relationship between the precoding matrix and the sub precoding matrix of the corresponding AP.
  • the columns of the sub-precoding matrix are determined by the number of spatial streams, and the number of rows is the same as the number of rows of the precoding matrix, except for the corresponding position and precoding.
  • the matrix is identical, and zeros are added at other positions of the sub-precoding matrix.
  • the AP determines the number of channel encoders and the number of spatial streams according to the specifications of the joint transmission.
  • the AP encodes the input data according to the sub-precoding matrix.
  • the AP After each AP obtains the shared precoding matrix, the AP adjusts the precoding matrix according to the flow indication.
  • JT Joint Send
  • all module processing dimensions before the Spatial Mapping module are required to be processed according to the dimensions sent jointly.
  • Parser is not only the same and synchronized, but in the case of N APs jointly transmitting, the splitter must be able to separate the spatial streams.
  • d the spatially mapped input signal
  • X the spatially mapped input signal
  • P the precoding matrix
  • the precoding of ⁇ should select the position of the ⁇ matrix corresponding to ⁇ ( , flow indication) and dimension ( £ cauliflower* ). Because of the corpse"
  • the principle of the sub-precoding matrix can be obtained as a precoding matrix of S ⁇ 22 1 24
  • a precoding matrix of ⁇ can be obtained.
  • the transmission method provided by the embodiment of the present invention provides information such as synchronization, data, and the like for applying a cooperative transmission scheme to an actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the technical solution of sharing, channel information acquisition and data method reduces overhead and improves work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides a transmission method, which is applied to cooperative transmission.
  • the method includes the following steps:
  • the information transmission method provided in this implementation is mainly applied to joint transmission, interference alignment, and coordinated beamforming process.
  • the channel information is obtained in the process.
  • the primary AP sends data to the STA.
  • the data may indicate all APs and STAs participating in the cooperative transmission.
  • the primary AP receives an acknowledgement ACK frame sent by the STA after receiving the data, so that any AP participating in the coordinated transmission determines its own data transmission time to avoid collision. 1403.
  • the primary AP acquires a response block acknowledgement (Block ACK, referred to as BA) that is successfully transmitted by any STA.
  • Block ACK a response block acknowledgement
  • FIG. 1 a schematic diagram illustrating the data transmission process by using two APs and two STAs as an example is shown in FIG.
  • any AP participating in the coordinated transmission can learn that the data sent by the AP in the embodiment and the acknowledgement frame replied by the STA are required to be in the process of jointly transmitting data. Participate in collaborative transmissions at a fixed time.
  • the fixed time may be a Short Interframe Space (SIFS) or a Point Coordination Function Interframe Space (PIFS).
  • SIFS Short Interframe Space
  • PIFS Point Coordination Function Interframe Space
  • the fixed time is not limited to this. Note that you can choose the appropriate length of time according to the specific implementation environment.
  • PIFS is a type of frame interval specified in the existing wireless LAN standard.
  • the duration specified in IEEE 802.11b is 30 us microseconds
  • the Slot time is 20 us
  • the duration specified in IEEE 802.11a is 25 us
  • the slot time is 9 us
  • the duration specified in IEEE 802. l lg is 19 us or 30 us
  • Slot time is 9 us or 20us
  • the duration of PIFS is equal to the duration of SIFS plus the slot time of slot.
  • SIFS is a fixed value in the existing WLAN.
  • the duration specified in IEEE 802.11b is lOus
  • the duration specified in IEEE 802.11a is 16us
  • the duration specified in IEEE 802. l lg is 10us.
  • the primary AP in the AP may notify all APs participating in the coordinated transmission to adjust the synchronous transmission and start transmitting data through the signaling or data exchange of the air interface in the actual phase of initiating the data transmission, or may be through the interconnected wired network. Realized.
  • the transmitted data may be a Request To Send (RTS) frame, and the STA replies to a clear to send (CTS) frame.
  • RTS Request To Send
  • CTS clear to send
  • the transmitted data can also be a notification for the start of the cooperative transmission, in which case the STA needs to reply to the dedicated frame.
  • the transmission method provided by the embodiment of the present invention in synchronization, data sharing and the like, channel
  • the technical solution of obtaining the shared channel information and the data method of applying synchronization transmission scheme to the synchronization, data and the like in the actual network reduces the overhead and improves the work.
  • An embodiment of the present invention provides an AP 15 for use in cooperative transmission.
  • the method includes: an obtaining unit 1501 and a processing unit 1502, where: an obtaining unit 1501 is configured to obtain a parameter value.
  • the parameter value is the frequency difference between the local crystal frequency of the AP and the reference crystal frequency of the reference AP or the delay difference of the AP with respect to the reference AP.
  • the processing unit 1502 is configured to: when the AP sends data simultaneously with the reference AP, compensate the phase difference or the time difference according to the parameter value.
  • the parameter value is a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP.
  • the obtaining unit 1501 includes: a receiving module 15011 and a calculating module 15012, and the towel:
  • the receiving module 15011 is configured to receive a crystal frequency of the reference AP sent by the primary AP.
  • the primary AP is any AP with control functions.
  • the calculation module 15012 is configured to calculate a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP according to the crystal frequency of the reference AP.
  • the parameter value is a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP.
  • the obtaining unit 1501 further includes: a sending module 15013, where:
  • the sending module 15013 is configured to send the crystal frequency of the AP to the primary AP, so that the primary AP selects the crystal frequency of the reference AP and calculates the frequency of the crystal frequency of the AP and the crystal frequency of the reference AP according to the crystal frequency of the reference AP and the crystal frequency of the AP. Difference.
  • the receiving module 15011 is further configured to receive a frequency difference between a local crystal frequency of the AP sent by the primary AP and a reference crystal frequency of the reference AP. Further, the parameter value is a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP, and the towel:
  • the sending module 15013 is further configured to: send the symbol of the first channel measurement to the STA at least twice, so that the STA calculates the first channel matrix of the AP twice according to the symbol measured by the first channel, and obtains according to the first channel matrix and The second channel matrix calculates the frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP.
  • the channel parameter matrix of the first channel matrix and the second channel matrix are unchanged; the second channel matrix is a channel matrix calculated by the STA according to the second channel measured symbol sent by the reference AP and the reference AP.
  • the receiving module 15011 is further configured to receive a frequency difference between a crystal frequency of the AP sent by the STA and a crystal frequency of the reference AP.
  • the parameter value is the frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP, and the towel:
  • the sending module 15013 is further configured to send the symbol of the first channel measurement to the station STA at least twice, so that the STA and the reference AP calculate the first channel matrix of the AP twice according to the symbol measured by the first channel and according to the first channel.
  • the matrix and the second channel matrix calculate the frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP.
  • the channel parameter matrix of the first channel matrix and the second channel matrix are unchanged; the second channel matrix is a channel matrix calculated by the STA according to the second channel measured symbol sent by the reference AP and the reference AP.
  • the receiving module 15011 is further configured to receive a frequency difference between a crystal frequency of the AP transmitted by the reference AP and a crystal frequency of the reference AP. Further, referring to FIG. 23, the parameter value is a delay difference of the AP with respect to the reference AP, and the obtaining unit 1501 further includes: an obtaining module 15014, where: the receiving module 15011 is further configured to receive a signal frame sent by the STA. The calculating module 15012 is further configured to calculate, according to the reference time, a sum of a transmission delay and a propagation delay of the STA.
  • the obtaining module 15014 is configured to subtract the sum of the sending delay and the propagation delay of the obtained STA from the sum of the sending delay and the propagation delay of the STA obtained by the reference AP, and obtain a propagation delay relative to the reference AP. The difference between the difference and the processing delay of the transmission. The sum of the transmission delay and the propagation delay of the STA obtained by the reference AP is calculated by the reference AP according to the reference time and sent to the AP.
  • An AP provided by an embodiment of the present invention provides an application for cooperative transmission in synchronization, data, information acquisition, channel information acquisition, and data transmission by providing synchronization, data, and the like to apply a cooperative transmission scheme to an actual network.
  • the technical solutions of sharing, channel information acquisition and data methods reduce overhead and improve work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides a STA 16 for use in cooperative transmission.
  • the method includes: a receiving unit 1601, a calculating unit 1602, and an obtaining unit 1603, where: the receiving unit 1601 is configured to repeat the receiving at least twice. The symbol of the first channel measurement sent by the ingress AP. The receiving unit 1601 is further configured to receive the symbol of the second channel measurement sent by the reference AP at least twice.
  • the calculating unit 1602 is configured to calculate a first channel matrix with the AP according to the symbol measured by the first channel. The calculating unit 1602 is further configured to calculate a second channel matrix with the reference AP according to the symbol measured by the second channel.
  • the obtaining unit 1603 is configured to calculate, according to the first channel matrix and the second channel matrix, a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP. Further, referring to FIG. 25, the calculating unit 1602 includes: an obtaining module 16021 and a calculating module 16022, where: The obtaining module 16021 is configured to obtain a first difference according to the first channel matrix. The first difference is a frequency difference between the local crystal frequency and the AP crystal frequency. The obtaining module 16021 is further configured to obtain a second difference according to the second channel matrix.
  • the second difference is a frequency difference between the local crystal frequency and the reference AP crystal frequency.
  • the calculating module 16022 is configured to calculate, according to the first difference value and the second difference value, a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP.
  • the STA further includes: a sending unit 1604, where: the sending unit 1604 is configured to send a frequency difference between a crystal frequency of the AP and a crystal frequency of the reference AP to the AP.
  • the calculating unit 1602 further includes: a sending module 16023, the towel:
  • the obtaining module 16021 is further configured to obtain the first difference according to the first channel matrix.
  • the first difference is a frequency difference between the local crystal frequency and the AP crystal frequency.
  • the obtaining module 16021 is further configured to obtain a second difference according to the second channel matrix.
  • the second difference is a frequency difference between the local crystal frequency and the reference AP crystal frequency.
  • the sending module 16023 is configured to send the first difference value and the second difference value to the reference AP, so that the reference AP calculates the frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP according to the first difference value and the second difference value. And send the frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP to the AP.
  • the STA provided by the embodiment of the present invention provides information for synchronizing, data, and the like in applying a cooperative transmission scheme to an actual network in an application of cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the technical solutions of sharing, channel information acquisition and data methods reduce overhead and improve work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides an AP 17 for use in cooperative transmission, with reference to FIG.
  • the indication includes: a determining unit 1701 and a processing unit 1702, wherein:
  • the determining unit 1701 is configured to determine a data type of the data sent by the acquired STA.
  • the processing unit 1702 is configured to: if the data type of the data is joint sending, store the data in the buffer according to the indication information.
  • the primary AP When the primary AP sends data, it reads the buffer and sends the data in the buffer.
  • the primary AP is any AP with control functions.
  • the buffer is a joint type AC-JT buffer, and the determining unit 1701 is specifically configured to:
  • JT_IDX determines the data type of the data. Further, the indication information is a data transmission sequence carried by the data itself.
  • the processing unit 1702 includes: a first processing module 17021, where: the first processing module 17021 is configured to: if the data type of the data is jointly sent, The data is stored in the AC-JT buffer according to the data transmission sequence carried by the data itself.
  • the processing unit 1702 further includes: a second processing module 17022, where: the second processing module 17022 is configured to: if the data type of the data is jointly sent , the data is classified as AC-JT access type.
  • the second processing module 17022 is further configured to store the data in the AC-JT buffer according to the data sending sequence indicated in the indication command.
  • the indication command is carried in the data.
  • the AP further includes: a storage unit 1703, where: the storage unit 1703 is configured to: if the data type of the data is not jointly sent, store the data in the data according to the service classification information carried by the data itself. Access queue.
  • the buffer is a joint transmission buffer JT Buffer.
  • the determining unit 1701 includes: a selecting module 17011 and a confirming module 17012, where: The selecting module 17011 is configured to select, according to the data indication that the acquired STA needs to be jointly sent, to select data that needs to be jointly sent from the local access type buffer.
  • the local access types include: voice access type AC-VO, video access type AC-VI, best-effort access type AC-BE, or background access type AC-BK.
  • the confirmation module 17012 is configured to confirm that the data type of the data is a joint transmission.
  • the processing unit 1702 further includes: a third processing module 17023, which:
  • the third processing module 17023 is configured to: if the data type of the data is joint sending, store the data in the JT Buffer buffer according to the data sending order indicated by the instruction command pre-existing in the JT Buffer buffer.
  • the command command is stored in the JT Buffer buffer by the AP.
  • An AP provided by an embodiment of the present invention provides an application for cooperative transmission in synchronization, data, information acquisition, channel information acquisition, and data transmission by providing synchronization, data, and the like to apply a cooperative transmission scheme to an actual network.
  • the technical solutions of sharing, channel information acquisition and data methods reduce overhead and improve work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides an AP 18, which is applied to cooperative transmission.
  • the method includes: a receiving unit 1801, a sending unit 1802, an obtaining unit 1803, and an encoding unit 1804, where: a receiving unit 1801 is configured to receive a station. Channel information sent by the STA.
  • the sending unit 1802 is configured to send channel information to the primary AP, so that the primary AP calculates the precoding matrix according to the channel information and the precoding criterion, and sends the indication information to the AP by using the indication information.
  • the indication information carries a precoding matrix and a flow indication corresponding to all APs; the flow indication is used to indicate that each AP uses the part of the precoding matrix and the corresponding number of flows.
  • the receiving unit 1801 is further configured to receive a precoding matrix sent by the primary AP.
  • the obtaining unit 1802 is configured to obtain a sub-precoding matrix according to the precoding matrix.
  • the encoding unit 1803 is configured to encode the input data according to the sub precoding matrix. Further, the obtaining unit 1802 is specifically configured to: calculate a sub precoding matrix according to the obtained stream indication and the precoding matrix.
  • the stream indication carries a sub-matrix of the sub-precoding matrix.
  • An AP provided by an embodiment of the present invention provides an application for cooperative transmission in synchronization, data, information acquisition, channel information acquisition, and data transmission by providing synchronization, data, and the like to apply a cooperative transmission scheme to an actual network.
  • the technical solutions of sharing, channel information acquisition and data methods reduce overhead and improve work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides a primary AP 19, which is applied to cooperative transmission.
  • the method includes: a sending unit 1901 and a receiving unit 1902, where:
  • the sending unit 1901 is configured to send data to the STA.
  • the data may indicate all APs and STAs participating in the cooperative transmission.
  • the receiving unit 1902 is configured to receive an acknowledgement ACK frame sent by the STA after receiving the data. So that any AP participating in the cooperative transmission determines its own data transmission time and avoids conflicts.
  • the ACK frame carries all the APs and STAs participating in the coordinated transmission.
  • the primary AP 19 further includes: an obtaining unit 1903, where: an obtaining unit 1903 is configured to obtain a response block confirmation that the transmission is successfully sent by any STA.
  • the primary AP provided by the embodiment of the present invention provides synchronization, data, and the like in applying the cooperative transmission scheme to the actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the technical solution of sharing, channel information acquisition and data method reduces overhead and improves work efficiency.
  • An embodiment of the present invention provides an AP 20 for use in cooperative transmission. Referring to FIG. 37, the method includes: at least one processor 2001, a memory 2002, a communication interface 2003, and a bus 2004, at least one processor 2001, a memory 2002, and a communication.
  • the interface 2003 connects and completes communication with each other via the bus 2004, and the memory 2001 is used to store program codes, where:
  • the bus 2004 can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA). ) Bus, etc.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus 2004 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 37, but it does not mean that there is only one bus or one type of bus. among them:
  • the memory 2002 is for storing program code, and the program code includes an operation instruction.
  • Memory 2002 may contain high speed RAM memory and may also include non-volatile memory, such as at least one disk memory.
  • the processor 2001 may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more configured to implement the embodiments of the present invention. integrated circuit.
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • the communication interface 2003 is mainly used to implement communication between devices in this embodiment.
  • the processor 2001 is further configured to call the program code in the memory 2002 to perform the following operations:
  • the parameter value is the frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP or the delay difference of the AP with respect to the reference AP.
  • the AP sends data simultaneously with the reference AP, the phase difference or the time difference is compensated according to the parameter value.
  • the parameter value is a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP.
  • the processor 2001 is further configured to: receive a crystal oscillator frequency of the reference AP sent by the primary AP.
  • the primary AP is any AP with control function.
  • the frequency difference between the crystal frequency of the AP and the reference crystal frequency of the reference AP is calculated according to the crystal frequency of the reference AP.
  • the parameter value is a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP, and the processor 2001 is further configured to: send the crystal frequency of the AP to the primary AP, so that the primary AP selects the reference AP.
  • the crystal frequency calculates the frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP according to the crystal frequency of the reference AP and the crystal frequency of the AP.
  • the frequency difference between the crystal frequency of the AP transmitted by the primary AP and the crystal frequency of the reference AP is received.
  • the parameter value is a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP
  • the processor 2001 is further configured to: perform the following operations at least twice to send the symbol of the first channel measurement to the STA, so as to facilitate
  • the STA calculates the first channel matrix of the AP twice according to the symbol measured by the first channel, and calculates the frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP according to the first channel matrix and the obtained second channel matrix.
  • the channel parameter matrix of the first channel matrix and the second channel matrix are all unchanged, and the second channel matrix is a channel matrix calculated by the STA according to the second channel measured symbol sent by the reference AP and the reference AP.
  • the parameter value is a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP
  • the processor 2001 is further configured to: perform the following operations at least twice to send the symbol of the first channel measurement to the STA, so as to facilitate The STA and the reference AP calculate the first channel matrix of the AP twice according to the symbol measured by the first channel and according to The first channel matrix and the second channel matrix calculate a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP.
  • the channel parameter matrix of the first channel matrix and the second channel matrix are unchanged, and the second channel matrix is a channel matrix calculated by the STA according to the symbol measured by the second signal sent by the reference AP.
  • the frequency difference between the crystal frequency of the AP transmitted by the reference AP and the crystal frequency of the reference AP is received.
  • the parameter value is a delay difference of the AP relative to the reference AP
  • the processor 2001 is further configured to: receive a signal frame sent by the STA.
  • the signal frame carries a reference time.
  • the sum of the transmission delay and the propagation delay of the STA is calculated according to the reference time.
  • the sum of the transmission delay and the propagation delay of the obtained STA is subtracted from the sum of the transmission delay and the propagation delay of the STA obtained by the reference AP, and the propagation delay difference and the transmission processing with respect to the reference AP are obtained.
  • Delay difference The sum of the transmission delay and the propagation delay of the STA obtained by the reference AP is calculated by the reference AP according to the reference time and sent to the AP.
  • An AP provided by an embodiment of the present invention provides an application for cooperative transmission in synchronization, data, information acquisition, channel information acquisition, and data transmission by providing synchronization, data, and the like to apply a cooperative transmission scheme to an actual network.
  • the technical solutions of sharing, channel information acquisition and data methods reduce overhead and improve work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides a STA 21 for use in cooperative transmission.
  • the method includes: at least one processor 2101, a memory 2102, a communication interface 2103, and a bus 2104, at least one processor 2101, a memory 2102, and a communication.
  • the interface 2103 is connected through the bus 2104 and completes communication with each other, and the memory 2101 is used to store program codes, where:
  • the bus 2104 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA). ) Bus, etc.
  • the bus 2104 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 38, but it does not mean that there is only one bus or one type of bus. among them:
  • the memory 2102 is for storing program code, the program code including an operation instruction.
  • the memory 2102 may include a high speed RAM memory and may also include a non-volatile memory such as at least one disk memory.
  • the processor 2101 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more configured to implement the embodiments of the present invention. integrated circuit.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the communication interface 2103 is mainly used to implement communication between devices in this embodiment.
  • the processor 2101 is further configured to call the program code in the memory 2102 to perform the following operations:
  • the symbol of the first channel measurement received by the A P is received at least twice.
  • the symbol of the second channel measurement transmitted by the reference AP is received at least twice.
  • a first channel matrix with the AP is calculated based on the symbols measured by the first channel.
  • a second channel matrix with the reference AP is calculated from the second channel measurement symbols. Calculating a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP according to the first channel matrix and the second channel matrix.
  • the processor 2101 is further configured to obtain a first difference according to the first channel matrix.
  • the first difference is a frequency difference between the local crystal frequency and the AP crystal frequency.
  • the processor 2101 is further configured to obtain a second difference according to the second channel matrix.
  • the second difference is a frequency difference between the local crystal frequency and the reference AP crystal frequency.
  • the processor 2101 is further configured to calculate, according to the first difference value and the second difference value, a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP. Further, the processor 2101 is further configured to send a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP to the AP. Optionally, the processor 2101 is further configured to: obtain the first difference according to the first channel matrix. The first difference is a frequency difference between the local crystal frequency and the AP crystal frequency.
  • a second difference is obtained from the second channel matrix.
  • the second difference is a frequency difference between the local crystal frequency and the reference AP crystal frequency. Transmitting a first difference and a second difference to the reference AP, so that the reference AP calculates a frequency difference between the crystal frequency of the AP and the crystal frequency of the reference AP according to the first difference and the second difference, and the crystal of the AP is The frequency difference between the frequency and the crystal frequency of the reference AP is sent to the AP.
  • the STA provided by the embodiment of the present invention provides information for synchronizing, data, and the like in applying a cooperative transmission scheme to an actual network in an application of cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the technical solutions of sharing, channel information acquisition and data methods reduce overhead and improve work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides an AP 22 for use in cooperative transmission.
  • the method includes: at least one processor 2201, a memory 2202, a communication interface 2203, and a bus 2204, at least one processor 2201, a memory 2202, and a communication.
  • the interface 2203 is connected to and communicates with each other through the bus 2204.
  • the memory 2201 is used to store program code, where: the bus 2204 can be an Industry Standard Architecture (ISA) bus, and an external device interconnection (Peripheral). Component Interconnect (referred to as PCI) bus or extended industry standard architecture (EISA) bus.
  • the bus 2204 can be divided into an address bus, a data bus, a control bus, and the like.
  • the memory 2202 is configured to store program code, the program code including an operation instruction.
  • the memory 2202 may include a high speed RAM memory and may also include a non-volatile memory such as at least one disk memory.
  • the processor 2201 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more configured to implement the embodiments of the present invention. integrated circuit.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the communication interface 2203 is mainly used to implement communication between devices in this embodiment.
  • the processor 2201 is further configured to call the program code in the memory 2202 to perform the following operations:
  • the primary AP When the primary AP sends data, it reads the buffer and sends the data in the buffer.
  • the primary AP has any control function.
  • the buffer is a joint type AC-JT buffer, where: the processor 2201 is further configured to determine, according to the joint transmission indication JT_IDX carried by the data itself, the data type of the data.
  • the indication information is a data transmission sequence carried by the data itself
  • the processor 2201 is further configured to: if the data type of the data is joint transmission, store the data in the AC-JT buffer according to the data transmission sequence carried by the data itself.
  • the indication information is an order of sending data indicated in the instruction command, where: the processor 2201 is further configured to:
  • the data is classified as an AC JT access type.
  • the data is stored in the AC-JT buffer according to the order in which the data is indicated in the instruction command. Wherein, the indication command is carried in the data.
  • the processor 2201 is further configured to: if the data type of the data is not used for joint transmission, store the data in the corresponding access type queue according to the service classification information carried by the data itself.
  • the buffer is a joint transmission buffer JT Buffer
  • the processor 2201 is further configured to: perform, according to the data indication that the acquired STA needs to be jointly sent, select a joint transmission from the local access type buffer. The data.
  • the local access types include: voice access type AC-VO, video access type AC-VI, best-effort access type AC-BE or background access type AC-BK.
  • the indication information is an order of data transmission indicated by an instruction command pre-existing in the JT Buffer buffer, where: the processor 2201 is further configured to: if the data type of the data is joint transmission, indicate according to an instruction command pre-existing the JT Buffer buffer The data transmission sequence stores the data in the JT Buffer buffer.
  • the indication command is that the AP is stored in the JT Buffer buffer.
  • An AP provided by an embodiment of the present invention provides an application for cooperative transmission in synchronization, data, information acquisition, channel information acquisition, and data transmission by providing synchronization, data, and the like to apply a cooperative transmission scheme to an actual network.
  • the technical solutions of sharing, channel information acquisition and data methods reduce overhead and improve work efficiency. At the same time, you can also extend the application scenario.
  • An embodiment of the present invention provides an AP23 for use in cooperative transmission.
  • the method includes: at least one processor 2301, a memory 2302, a communication interface 2303, and a bus 2304, at least one processor 2301, a memory 2302, and a communication.
  • the interface 2303 is connected through the bus 2304 and completes communication with each other, and the memory 2301 is used to store program codes, where:
  • the bus 2304 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA). ) Bus, etc.
  • the bus 2304 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 40, but it does not mean that there is only one bus or one type of bus. among them:
  • the memory 2302 is for storing program code, the program code including an operation instruction.
  • the memory 2302 may include a high speed RAM memory and may also include a non-volatile memory such as at least one disk memory.
  • the processor 2301 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more configured to implement the embodiments of the present invention. integrated circuit.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the communication interface 2303 is mainly used to implement communication between devices in this embodiment.
  • the processor 2301 is further configured to call the program code in the memory 2302 to perform the following operations:
  • the AP receives the channel information sent by the STA.
  • the channel information is sent to the primary AP, so that the primary AP calculates the precoding matrix according to the channel information and the precoding criterion and sends the indication information to the AP.
  • the indication information carries a precoding matrix and a flow indication corresponding to all APs; the flow indication is used to indicate a part of each AP that uses the precoding matrix and a corresponding flow number.
  • the sub-precoding matrix is obtained according to the precoding matrix.
  • the input data is encoded according to a sub-precoding matrix.
  • the processor 2301 is further configured to calculate the sub precoding matrix according to the obtained flow indication and the precoding matrix.
  • the stream indication carries a sub-matrix of the sub-precoding matrix.
  • An embodiment of the present invention provides a primary AP 24 for use in cooperative transmission.
  • the method includes: at least one processor 2401, a memory 2402, a communication interface 2403, and a bus 2404, at least one processor 2401, a memory 2402, and The communication interface 2403 is connected through the bus 2404 and completes communication with each other, and the memory 2401 is used to store program codes, where:
  • the bus 2404 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA). ) Bus, etc.
  • the bus 2404 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 41, but it does not mean that there is only one bus or one type of bus.
  • the memory 2402 is for storing program code, and the program code includes an operation instruction.
  • Memory 2402 may include high speed RAM memory and may also include non-volatile memory, such as at least one disk memory.
  • the processor 2401 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more configured to implement the embodiments of the present invention. integrated circuit.
  • the communication interface 2403 is mainly used to implement communication between devices in this embodiment.
  • the processor 2401 is further configured to call the program code in the memory 2402 to perform the following operations:
  • the data may indicate all APs and STAs participating in the cooperative transmission.
  • Receiving an acknowledgment ACK frame sent by the STA after receiving the data so that any AP participating in the cooperative transmission determines its own data transmission time and avoids the occurrence of a collision.
  • the ACK frame carries all the APs and STAs participating in the coordinated transmission.
  • the processor 2801 is further configured to perform the following steps: Acquire a response block confirmation BA that is successfully transmitted by any STA.
  • the primary AP provided by the embodiment of the present invention provides synchronization, data, and the like in applying the cooperative transmission scheme to the actual network in an application for cooperative transmission in synchronization, data sharing, channel information acquisition, and data transmission.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present application in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • a computer device which may be a personal computer, a server, or a network device, etc.
  • a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a USB flash drive, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or a magnetic disk.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • magnetic disk or a magnetic disk.
  • a variety of media such as optical discs that can store program code.

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Abstract

本发明的实施例提供一种传输方法和装置,涉及通信技术领域,在同步、数据等信息共享、信道信息的获得和数据发送方面在协作传输的应用中,降低了开销、提高了工作效率。同时,还可以扩展应用场景。该方法具体包括:接入点AP获取参数值;其中,所述参数值为所述AP的本地晶振频率与参考AP的参考晶振频率的频率差值或者所述AP相对于参考AP的时延差值;当所述AP与所述参考AP同时发送数据时,所述AP根据所述参数值补偿相位差异或者时间差值。本发明应用于协作传输的应用中。

Description

一种传输方法和装置 技术领域 本发明涉及通信技术领域, 尤其涉及一种传输方法和装置。 背景技术
多输入多输出 ( Multiple Input Multiple Output , 简称 ΜΙΜΟ ) 在无 线通信系统中是指利用多天线构建多维的空间资源,这些多维空间资源形 成多个并行通路; 无线站台就可以利用这些并行的通路传送多路信号, 提 升数据的传输速率。 进一步, 由于发送的无线站台和接收的无线站台在天 线数量上不相同,配备较多天线数的站台可以支持与多个配备较少天线数 的站台同时传输数据。通常, 我们将配备较多天线数的站台向多个配备较 少天线数的站台传输数据称作下行多用户 ΜΙΜΟ ( DL MU-MIMO ), 将多 个配备较少天线数的站台同时向配备较多天线数的站台传输数据称作上 行多用户 ΜΙΜΟ ( UL MU-MIMO )。 随着网络整体吞吐量需求的急剧增长, 网络的干扰问题成为阻碍网 络容量进一步提升的关键要素。从多个发送端的角度消除甚至利用干扰来 增加吞吐量成为一个重要的趋势, 比如协作发送 ( cooperative transmission ) , 协调波束成形 ( coordinated beamforming ) 和干扰对齐 ( interference alignment ) 等方法。 进一步, 为了实现多个发送端的协作 传输, 需要在收发端作出对应的调整。 比如说: 为了支持协作发送, 所有 的数据在多个发送端必须以相同的数据同步发送并且同步到达接收端。简 单说, 为了在实际网络中实现多个发送端的协作传输, 就要在同步(包括 时间同步和晶振同步)、 数据等信息共享、 信道信息的获得以及数据发送 等方面能够支持协作的传输方案。 现有技术中解决同步、 数据等信息共享、 信道信息的获得和数据发 送方面的技术方案, 在实际的应用中开销较大, 工作效率较低, 应用场景 有限。 发明内容
本发明的实施例提供一种传输方法和装置, 在同步、 数据等信息共 享、 信道信息的获得和数据发送方面在协作传输的应用中, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用场景。
为达到上述目的, 本发明的实施例釆用如下技术方案: 第一方面, 提供一种传输方法, 应用于协作传输中, 该方法包括: 接入点 AP获取参数值; 其中, 所述参数值为所述 AP的晶振频率与 参考 AP的晶振频率的频率差值或者所述 AP相对于参考 AP的时延差值; 当所述 AP与所述参考 AP同时发送数据时, 所述 AP根据所述参数 值补偿相位差异或者时间差值。
在第一种可能的实现方式中, 结合第一方面, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值, 所述接入点 AP获取参数 值, 包括:
接收主 AP发送的参考晶振频率; 其中, 所述主 AP为任一具有控制 功能的 AP;
根据所述参考 AP的晶振频率计算所述 AP的晶振频率与参考 AP的 晶振频率的频率差值。
在第二种可能的实现方式中, 结合第一方面, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值, 所述接入点 AP获取参数 值, 包括:
发送所述 AP的晶振频率至所述主 AP , 以便于所述主 AP选择参考 AP的晶振频率并根据所述参考 AP的晶振频率和所述 AP的晶振频率计算 所述 AP的晶振频率与参考 AP的晶振频率的频率差值; 接收所述主 AP发送的所述 AP的晶振频率与参考 AP的晶振频率的 频率差值。 在第三种可能的实现方式中, 结合第一方面, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值, 所述接入点 AP获取参数 值, 包括: 至少重复两次发送第一信道测量的符号至站点 STA,以便于所述 STA 根据所述第一信道测量的符号两次计算与所述 AP的第一信道矩阵, 并根 据所述第一信道矩阵和得到的第二信道矩阵计算所述 AP的晶振频率与所 述参考 AP的晶振频率的频率差值; 其中, 所述第一信道矩阵和所述第二 信道矩阵的信道参数矩阵均不变, 所述第二信道矩阵是所述 STA根据所 述参考 AP发送的第二信道测量的符号计算得到的与所述参考 AP的信道 矩阵; 接收站点 S T A发送的所述 A P的晶振频率与所述参考 A P的晶振频率 的频率差值。 在第四种可能的实现方式中, 结合第一方面, 所述参数值为所述 AP 与参考 AP的晶振频率的频率差值, 所述接入点 AP获取参数值, 包括: 至少重复两次发送第一信道测量的符号至站点 STA,以便于所述 STA 和所述参考 AP根据所述第一信道测量的符号两次计算与所述 AP的第一 信道矩阵并根据所述第一信道矩阵和第二信道矩阵计算所述 AP的晶振频 率与参考 AP的晶振频率的频率差值; 其中, 所述第一信道矩阵和所述第 二信道矩阵的信道参数矩阵不变, 所述第二信道矩阵为所述 STA根据所 述参考 AP发送的第二信道测量的符号计算得到的与所述参考 AP的信道 矩阵; 接收所述参考 AP发送的所述 AP的晶振频率与参考 AP的晶振频率 的频率差值。 在第五种可能的实现方式中, 结合第一方面, 所述参数值为所述 AP 相对于参考 AP的时延差值, 所述接入点 AP获取参数值, 包括: 接收 STA发送的信号帧; 其中, 所述信号帧中携带参考时间; 根据所述参考时间计算得到所述 STA 的发送时延与传播时延的和 值; 将获得的所述 STA的发送时延与传播时延的和值与参考 AP获得的 STA的发送时延与传播时延的和值相减,获得相对于参考 AP的传播时延 差值和发送的处理时延差值; 其中, 所述参考 AP获得的 STA的发送时 延与传播时延的和值是所述参考 AP根据所述参考时间计算得到并发送至 AP的。 第二方面, 提供一种传输方法, 应用于协作传输中, 所述方法包括: 站点 S T A至少重复两次接收接入点 A P发送的第一信道测量的符号; 至少重复两次接收参考 A P发送的第二信道测量符号; 根据所述第一信道测量的符号计算与所述 A P的第一信道矩阵; 根据所述第二信道测量符号计算与所述参考 AP的第二信道矩阵; 根据所述第一信道矩阵和所述第二信道矩阵计算获得所述 AP 与所 述参考 AP的晶振频率的频率差值。 在第一种可能的实现方式中, 结合第二方面, 所述根据所述第一信 道矩阵和所述第二信道矩阵计算获得所述 AP的晶振频率与所述参考 AP 的晶振频率的频率差值, 包括: 根据所述第一信道矩阵获得第一差值; 其中, 所述第一差值为本地 晶振频率与所述 A P晶振频率的频率差值; 根据所述第二信道矩阵获得第二差值; 其中, 所述第二差值为本地 晶振频率与所述参考 AP晶振频率的频率差值; 根据所述第一差值和所述第二差值计算得到所述 AP 的晶振频率与 所述参考 AP的晶振频率的频率差值; 发送所述 AP 的晶振频率与参考 AP 的晶振频率的频率差值至所述
AP。 在第二种可能的实现方式中, 结合第二方面, 述根据所述第一信道 矩阵和所述第二信道矩阵计算获得所述 AP的晶振频率与所述参考 AP的 晶振频率的频率差值, 包括: 根据所述第一信道矩阵获得第一差值; 其中, 所述第一差值为本地 晶振频率与所述 A P晶振频率的频率差值; 根据所述第二信道矩阵获得第二差值; 其中, 所述第二差值为本地 晶振频率与所述参考 AP晶振频率的频率差值; 发送所述第一差值和所述第二差值至所述参考 AP , 以便于所述参考 AP根据所述第一差值和所述第二差值计算得到所述 AP的晶振频率与所 述参考 AP的晶振频率的频率差值, 并将所述 AP的晶振频率与所述参考 AP的晶振频率的频率差值发送至所述 AP。 第三方面, 提供一种传输方法, 应用于协作传输中, 所述方法包括: 接入点 AP判断获取的 STA发送的数据的数据类型; 若所述数据的数据类型为联合发送, 则按照指示信息将所述数据存 入緩存器中; 当主 AP发送数据时, 所述 AP读取所述緩存器并发送所述緩存器中 的数据; 其中, 所述主 AP为任一具有控制功能的 AP。 在第一种可能的实现方式中, 结合第三方面, 所述緩存器为联合发 送的接入类型 AC— JT緩存器, 所述 AP判断数据的数据类型包括: 根据所述数据自身携带的联合发送的指示 JT— IDX 判断数据的数据 类型。
在第二种可能的实现方式中, 结合第一种可能的实现方式, 所述指 示信息为所述数据自身携带的数据发送顺序,所述若所述数据的数据类型 为联合发送, 则按照指示信息将所述数据存入緩存器中, 包括: 若所述数据的数据类型是用于联合发送的, 则按照所述数据自身携 带的数据发送顺序将所述数据存入所述 AC— JT緩存器中。 在第三种可能的实现方式中, 结合第一种可能的实现方式, 所述指 示信息为指示命令中指示的数据发送顺序,所述若所述数据的数据类型为 联合发送, 则按照指示信息将所述数据存入緩存器中, 包括: 若所述数据的数据类型为联合发送, 则将所述数据归类为 AC— JT接 入类型;
根据所述指示命令中指示的数据发送顺序, 将所述数据存入所述 AC— JT緩存器中; 其中, 所述指示命令携带在所述数据中。
在第四种可能的实现方式中, 结合第二种可能的实现方式或第三种 可能的实现方式, 所述方法还包括: 若所述数据的数据类型不是联合发送, 则根据所述数据自身携带的 业务分类信息将所述数据存入所述数据对应的接入类型队列。
在第五种可能的实现方式中, 结合第三方面, 所述緩存器为联合发 送緩存器 JT Buffer , 所述 AP判断数据的数据类型包括: 根据获取的所述 STA发送的需要联合发送的数据指示, 从本地接入 类型緩存器中选择需要联合发送的数据; 其中, 所述本地接入类型包括: 语音接入类型 AC— VO、 视频接入类型 AC— VI、 最大努力的接入类型 AC— BE或背景的接入类型 AC— BK; 确认所述数据的数据类型为联合发送。 在第六种可能的实现方式中, 结合第五种可能的实现方式, 所述指 示信息为预存在所述 JT Buffer緩存器的指令命令指示的数据发送顺序, 所述若所述数据的数据类型为联合发送,则按照指示信息将所述数据存入 緩存器中, 包括:
若所述数据的数据类型为联合发送, 则根据所述预存在所述 JT Buffer 緩存器的指令命令指示的数据发送顺序将所述数据存入所述 JT Buffer緩存器中; 其中, 所述指令命令是所述 AP存储在所述 JT Buffer 緩存器中的。
第四方面, 提供一种传输方法, 应用于协作传输中, 所述方法包括: 接入点 AP接收任一 STA发送的信道信息; 发送所述信道信息至所述主 AP , 以便于所述主 AP根据所述信道信 息和预编码准则计算得到预编码矩阵并通过指示信息发送至所述 AP; 其 中,所述指示信息中携带所述预编码矩阵和所有的所述 A P对应的流指示; 所述流指示用于指示各个所述 A P使用所述预编码矩阵的部分和对应的流 数;
接收所述主 AP发送的预编码矩阵; 根据所述预编码矩阵获取子预编码矩阵; 根据所述子预编码矩阵对输入数据进行编码。 在第一种可能的实现方式中, 结合第四方面, 所述根据所述预编码 矩阵获取子预编码矩阵包括; 根据获取到的所述流指示和所述预编码矩阵计算得到所述子预编码 矩阵; 其中, 所述流指示中携带了所述子预编码矩阵的子矩阵。 第五方面, 提供一种传输方法, 应用于协作传输中, 所述方法包括: 主 AP发送数据至站点 STA; 其中, 所述数据可以指示参与协作传输 的所有的 AP和 STA;
接收所述 STA在收到所述数据后发送的确认 ACK帧,以便于所述参 与协作传输的任一 A P确定自己的数据发送时间,避免冲突的发生;其中, 所述 ACK帧中携带参与协作传输的所有的 AP和 STA。 在第一种可能的实现方式中, 结合第五方面, 所述方法还包括: 获取所述任一 STA发送的传输成功的响应块确认 BA。 第六方面, 提供一种 AP , 应用于协作传输中, 包括: 获取单元, 用于获取参数值; 其中, 所述参数值为所述 AP的晶振频 率与参考 AP的晶振频率的频率差值或者所述 AP相对于参考 AP的时延 差值;
处理单元, 用于当所述 AP与所述参考 AP同时发送数据时, 根据所 述参数值补偿相位差异或者时间差值。 在第一种可能的实现方式中, 结合第六方面, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值, 所述获取单元包括: 接收模块, 用于接收主 AP发送的参考 AP的晶振频率; 其中, 所述 主 AP为任一具有控制功能的 AP;
计算模块, 用于根据所述参考 AP的晶振频率计算所述 AP的晶振频 率与参考 AP的晶振频率的频率差值。
在第二种可能的实现方式中, 结合第六方面, 所述参数值为所述 AP 的晶振频率与参考 AP的参考晶振频率的频率差值,所述获取单元还包括: 发送模块, 用于发送所述 AP的晶振频率至所述主 AP , 以便于所述 主 AP选择参考 AP的晶振频率并根据所述参考 AP的晶振频率和所述 AP 的晶振频率计算所述 AP的晶振频率与参考 AP的晶振频率的频率差值; 所述接收模块, 还用于接收所述主 AP发送的所述 AP的晶振频率与 参考 AP的晶振频率的频率差值。
在第三种可能的实现方式中, 结合第六方面, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值, 所述发送模块, 还用于至少重复两次发送第一信道测量的符号至站 点 STA, 以便于所述 STA根据所述第一信道测量的符号两次计算与所述 AP第一的信道矩阵, 并根据所述第一信道矩阵和得到的第二信道矩阵计 算所述 AP的晶振频率与所述参考 AP的晶振频率的频率差值; 其中, 所 述第一信道矩阵和所述第二信道矩阵的信道参数矩阵均不变,所述第二信 道矩阵是所述 STA根据所述参考 AP发送的第二信道测量的符号计算得 到的与所述参考 AP的信道矩阵;
所述接收模块, 还用于接收站点 STA发送的所述 AP的晶振频率与 所述参考 AP的晶振频率的频率差值。
在第四种可能的实现方式中, 结合第六方面, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值, 所述发送模块, 还用于至少重复两次发送第一信道测量的符号至站 点 STA, 以便于所述 STA和所述参考 AP根据所述第一信道测量的符号 两次计算与所述 AP的第一信道矩阵并根据所述第一信道矩阵和第二信道 矩阵计算所述 AP的晶振频率与参考 AP的晶振频率的频率差值; 其中, 所述第一信道矩阵和所述第二信道矩阵的信道参数矩阵不变,所述第二信 道矩阵为所述 STA根据所述参考 AP发送的第二信道测量的符号计算得 到的与所述参考 AP的信道矩阵; 所述接收模块, 还用于接收所述参考 AP发送的所述 AP的晶振频率 与参考 AP的晶振频率的频率差值。 在第五种可能的实现方式中, 结合第六方面, 所述参数值为所述 AP 相对于参考 AP的时延差值, 所述获取单元还包括: 所述接收模块, 还用于接收 STA发送的信号帧; 其中, 所述信号帧 中携带参考时间; 所述计算模块, 还用于根据所述参考时间计算得到所述 STA的发送 时延与传播时延的和值; 获取模块, 用于将获得的所述 STA的发送时延与传播时延的和值与 参考 AP获得的 STA的发送时延与传播时延的和值相减, 获得相对于参 考 AP的传播时延差值和发送的处理时延差值; 其中, 所述参考 AP获得 的 STA 的发送时延与传播时延的和值是所述参考 AP根据所述参考时间 计算得到并发送至 AP的。 第七方面, 提供一种 STA, 应用于协作传输中, 包括: 接收单元,用于至少重复两次接收接入点 AP发送的第一信道测量的 符号; 所述接收单元,还用于至少重复两次接收参考 AP发送的第二信道测 量的符号; 计算单元,用于根据所述第一信道测量的符号计算与所述 AP的第一 信道矩阵; 所述计算单元, 还用于根据所述第二信道测量的符号计算与所述参 考 AP的第二信道矩阵; 获取单元, 用于根据所述第一信道矩阵和所述第二信道矩阵计算获 得所述 AP的晶振频率与所述参考 AP的晶振频率的频率差值。 在第一种可能的实现方式中, 结合第七方面, 所述获取单元包括: 获取模块, 用于根据所述第一信道矩阵获得第一差值; 其中, 所述 第一差值为本地晶振频率与所述 AP晶振频率的频率差值; 所述获取模块, 还用于根据所述第二信道矩阵获得; 其中, 所述第 二差值为本地晶振频率与所述参考 AP晶振频率的频率差值;
计算模块, 用于根据所述第一差值和所述第二差值计算得到所述 AP 的晶振频率与所述参考 AP的晶振频率的频率差值;
发送单元, 用于发送所述 AP的晶振频率与参考 AP的晶振频率的频 率差值至所述 AP。
在第二种可能的实现方式中, 结合第七方面, 所述获取单元还包括: 所述获取模块, 还用于根据所述第一信道矩阵获得第一差值; 其中, 所述第一差值为本地晶振频率与所述 A P晶振频率的频率差值; 所述获取模块, 还用于根据所述第二信道矩阵获得第二差值; 其中, 所述为本地晶振频率与所述参考 AP晶振频率的频率差值; 发送模块, 用于发送所述第一差值和所述第二差值至所述参考 AP , 以便于所述参考 AP根据所述第一差值和所述第二差值计算得到所述 AP 的晶振频率与所述参考 AP的晶振频率的频率差值, 并将所述 AP的晶振 频率与所述参考 AP的晶振频率的频率差值发送至所述 AP。 第八方面, 提供一种 AP , 应用于协作传输中, 包括: 判断单元, 用于判断获取的 STA发送的数据的数据类型; 处理单元, 用于若所述数据的数据类型为联合发送, 则按照指示信 息将所述数据存入緩存器中; 当主 AP发送数据时, 所述 AP读取所述緩存器并发送所述緩存器中 的数据; 其中, 所述主 AP为任一具有控制功能的 AP。 在第一种可能的实现方式中, 结合第八方面, 所述緩存器为联合发 送的接入类型 AC— JT緩存器, 所述判断单元具体用于: 根据所述数据自身携带的联合发送的指示 JT— IDX 判断数据的数据 类型。
在第二种可能的实现方式中, 结合第一种可能的实现方式, 所述指 示信息为所述数据自身携带的数据发送顺序, 所述处理单元包括:
第一处理模块, 用于若所述数据的数据类型为联合发送, 则按照所 述数据自身携带的数据发送顺序将所述数据存入所述 AC— JT緩存器中。
在第三种可能的实现方式中, 结合第一种可能的实现方式, 所述指 示信息为指示命令中指示的数据发送顺序, 所述处理单元还包括:
第二处理模块, 用于若所述数据的数据类型为联合发送, 则将所述 数据归类为 AC— JT接入类型;
所述第二处理模块, 还用于根据所述指示命令中指示的数据发送顺 序, 将所述数据存入所述 AC— JT緩存器中; 其中, 所述指示命令携带在 所述数据中。
在第四种可能的实现方式中, 结合第二种可能的实现方式或第三种 可能的实现方式, 所述 AP还包括: 存储单元, 用于若所述数据的数据类型不是联合发送, 则根据所述 数据自身携带的业务分类信息将所述数据存入所述数据对应的接入型队 列。
在第五种可能的实现方式中, 结合第八方面, 所述緩存器为联合发 送緩存器 JT Buffer, 所述判断单元包括:
选择模块, 用于根据获取的所述 STA发送的需要联合发送的数据指 示, 从本地接入类型緩存器中选择需要联合发送的数据; 其中, 所述本地 接入类型包括: 语音接入类型 AC VO、 视频接入类型 AC VI、 最大努力 的接入类型 AC— BE或背景的接入类型 AC— BK; 确认模块, 用于确认所述数据的数据类型为联合发送。
在第六种可能的实现方式中, 结合第五种可能的实现方式, 所述指 示信息为预存在所述 JT Buffer緩存器的指令命令指示的数据发送顺序, 所述处理单元还包括: 第三处理模块, 用于若所述数据的数据类型为联合发送, 则根据所 述预存在所述 JT Buffer緩存器的指令命令指示的数据发送顺序将所述数 据存入所述 JT Buffer緩存器中; 其中, 所述指令命令是所述 AP存储在 所述 JT Buffer緩存器中的。 第九方面, 提供一种 AP , 应用于协作传输中, 包括: 接收单元, 用于接收站点 STA发送的信道信息; 计算单元, 用于根据预编码准 H 'j和所述信道信, I.计算得到预编码矩 阵;
发送单元, 用于发送所述信道信息至所述主 AP , 以便于所述主 AP 根据所述信道信息和预编码准则计算得到预编码矩阵并通过指示信息发 送至所述 AP; 其中, 所述指示信息中携带所述预编码矩阵和所有的所述 AP对应的流指示; 所述流指示用于指示各个所述 AP使用所述预编码矩 阵的部分和对应的流数;
所述接收单元, 还用于接收所述主 AP发送的预编码矩阵; 获取单元, 用于根据所述预编码矩阵获取子预编码矩阵; 编码单元, 用于根据所述子预编码矩阵对输入数据进行编码。 在第一种可能的实现方式中, 结合第九方面, 所述获取单元具体用 于:
根据获取到的所述流指示和所述预编码矩阵计算得到所述子预编码 矩阵; 其中, 所述流指示中携带了所述子预编码矩阵的子矩阵。 第十方面, 提供一种主 AP , 应用于协作传输中, 包括: 发送单元, 用于发送数据至站点 STA; 其中, 所述数据可以指示参 与协作传输的所有的 AP和 STA; 接收单元,用于接收所述 S T A在收到所述数据后发送的确认 A C K帧, 以便于所述参与协作传输的任一 AP确定自己的数据发送时间, 避免冲突 的发生; 其中, 所述 ACK帧中携带参与协作传输的所有的 AP和 STA。 在第一种可能的实现方式中, 结合第十方面, 所述主 AP还包括: 获取单元, 用于获取所述任一 STA 发送的传输成功的响应块确认
BA。 第十一方面, 提供一种 AP , 应用于协作传输中, 所述 AP包括: 至少一个处理器、 存储器、 通信接口和总线, 所述至少一个处理器、 存储器和通信接口通过总线连接并完成相互间的通信,所述存储器用于存 储程序代码, 其中:
所述处理器, 用于调用存储器中的程序代码, 用以执行以下操作: 获取参数值; 其中, 所述参数值为所述 AP的晶振频率与参考 AP的 晶振频率的频率差值或者所述 AP相对于参考 AP的时延差值; 当所述 AP与所述参考 AP同时发送数据时, 根据所述参数值补偿相 位差异或者时间差值。
在第一种可能的实现方式中, 结合第十一方面, 所述参数值为所述 AP的晶振频率与参考 AP的晶振频率的频率差值, 所述处理器具体用于: 接收主 AP发送的参考 AP的晶振频率; 其中, 所述主 AP为任一具 有控制功能的 AP; 根据所述参考 AP 的晶振频率计算所述 AP 的晶振频率与所述参考 AP的晶振频率的频率差值。
在第二种可能的实现方式中, 结合第十一方面, 所述参数值为所述 AP的晶振频率与参考 AP的晶振频率的频率差值, 所述处理器具体用于: 发送所述 AP的晶振频率至所述主 AP , 以便于所述主 AP选择参考 AP的晶振频率并根据所述参考 AP的晶振频率和所述 AP的晶振频率计算 所述 AP的晶振频率与参考 AP的晶振频率的频率差值; 接收所述主 AP发送的所述 AP的晶振频率与参考 AP的晶振频率的 频率差值。
在第三种可能的实现方式中, 结合第十一方面, 所述参数值为所述 AP的晶振频率与参考 AP的晶振频率的频率差值, 所述处理器具体用于: 至少重复两次发送第一信道测量的符号至站点 STA,以便于所述 STA 根据所述第一信道测量的符号两次计算与所述 AP的第一信道矩阵, 并根 据所述第一信道矩阵和得到的第二信道矩阵计算所述 AP的晶振频率与所 述参考 AP的晶振频率的频率差值; 其中, 所述第一信道矩阵和所述第二 信道矩阵的信道参数矩阵均不变, 所述第二信道矩阵是所述 STA根据所 述参考 AP发送的第二信道测量的符号计算得到的与所述参考 AP的信道 矩阵; 接收站点 S T A发送的所述 A P的晶振频率与所述参考 A P的晶振频率 的频率差值。
在第四种可能的实现方式中, 结合第十一方面, 所述参数值为所述 AP的晶振频率与参考 AP的晶振频率的频率差值, 所述处理器具体用于: 至少重复两次发送第一信道测量的符号至站点 STA,以便于所述 STA 和所述参考 AP根据所述第一信道测量的符号两次计算与所述 AP的第一 信道矩阵并根据所述第一信道矩阵和第二信道矩阵计算所述 AP的晶振频 率与参考 AP的晶振频率的频率差值; 其中, 所述第一信道矩阵和所述第 二信道矩阵的信道参数矩阵不变, 所述第二信道矩阵为所述 STA根据所 述参考 AP发送的第二信号测量的符号计算得到的与所述参考 AP的信道 矩阵;
接收所述参考 AP发送的所述 AP的晶振频率与参考 AP的晶振频率 的频率差值。 在第五种可能的实现方式中, 结合第十一方面, 所述参数值为所述 AP相对于参考 AP的时延差值, 所述处理器具体用于: 接收 STA发送的信号帧; 其中, 所述信号帧中携带参考时间; 根据所述参考时间计算得到所述 STA 的发送时延与传播时延的和 值; 将获得的所述 STA的发送时延与传播时延的和值与参考 AP获得的 STA的发送时延与传播时延的和值相减,获得相对于参考 AP的传播时延 差值和发送的处理时延差值; 其中, 所述参考 AP获得的 STA的发送时 延与传播时延的和值是所述参考 AP根据所述参考时间计算得到并发送至 AP的。 第十二方面, 提供一种 STA, 应用于协作传输中, 所述 STA包括: 至少一个处理器、 存储器、 通信接口和总线, 所述至少一个处理器、 存储 器和通信接口通过总线连接并完成相互间的通信,所述存储器用于存储程 序代码, 其中: 所述处理器, 用于调用存储器中的程序代码, 用以执行以下操作: 至少重复两次接收接入点 A P发送的第一信道测量的符号; 至少重复两次接收参考 AP发送的第二信道测量的符号; 根据所述第一信道测量的符号计算与所述 A P的第一信道矩阵; 根据所述第二信道测量符号计算与所述参考 AP的第二信道矩阵; 根据所述第一信道矩阵和所述第二信道矩阵计算获得所述 AP 的晶 振频率与所述参考 AP的晶振频率的频率差值。 在第一种可能的实现方式中, 结合第十二方面, 所述处理器具体用 于: 根据所述第一信道矩阵获得第一差值; 其中, 所述第一差值为本地 晶振频率与所述 A P晶振频率的频率差值; 根据所述第二信道矩阵获得第二差值, 其中所述第二差值为本地晶 振频率与所述参考 AP晶振频率的频率差值; 根据所述第一差值和所述第二差值计算得到所述 AP 的晶振频率与 所述参考 AP的晶振频率的频率差值; 发送所述 AP 的晶振频率与参考 AP 的晶振频率的频率差值至所述
AP。 在第二种可能的实现方式中, 结合第十二方面, 所述处理器具体用 于: 根据所述第一信道矩阵获得第一差值; 其中, 所述第一差值为本地 晶振频率与所述 A P晶振频率的频率差值; 根据所述第二信道矩阵获得第二差值; 其中, 所述第二差值为本地 晶振频率与所述参考 AP晶振频率的频率差值; 发送所述第一差值和所述第二差值至所述参考 AP , 以便于所述参考 AP根据所述第一差值和所述第二差值计算得到所述 AP的晶振频率与所 述参考 AP的晶振频率的频率差值, 并将所述 AP的晶振频率与所述参考 AP的晶振频率的频率差值发送至所述 AP。 第十三方面, 提供一种 AP , 应用于协作传输中, 所述 AP包括: 至 少一个处理器、 存储器、 通信接口和总线, 所述至少一个处理器、 存储器 和通信接口通过总线连接并完成相互间的通信,所述存储器用于存储程序 代码, 其中: 所述处理器, 用于调用存储器中的程序代码, 用以执行以下操作: 判断获取的 STA发送的数据的数据类型; 若所述数据的数据类型为联合发送, 则按照指示信息将所述数据存 入緩存器中; 当主 AP发送数据时, 所述 AP读取所述緩存器并发送所述緩存器中 的数据; 其中, 所述主 AP为任一具有控制功能的 AP。 在第一种可能的实现方式中, 结合第十三方面, 所述緩存器为联合 发送的接入类型 AC JT緩存器, 所述处理器具体用于: 根据所述数据自身携带的联合发送的指示 JT— IDX 判断数据的数据 类型。
在第二种可能的实现方式中, 结合第一种可能的实现方式, 所述指 示信息为所述数据自身携带的数据发送顺序, 所述处理器具体用于: 若所述数据的数据类型为联合发送, 则按照所述数据自身携带的数 据发送顺序将所述数据存入所述 AC— JT緩存器中。
在第三种可能的实现方式中, 结合第一种可能的实现方式, 所述指 示信息为指示命令中指示的数据发送顺序, 所述处理器具体用于:
若所述数据的数据类型为联合发送, 则将所述数据归类为 AC— JT接 入类型;
根据所述指示命令中指示的数据发送顺序, 将所述数据存入所述 AC— JT緩存器中; 其中, 所述指示命令携带在所述数据中。
在第四种可能的实现方式中, 结合第二种可能的实现方式或第三种 可能的实现方式,
所述处理器, 还用于若所述数据的数据类型不是联合发送, 则根据 所述数据自身携带的业务分类信息将所述数据存入所述数据对应的接入 型队列。
在第五种可能的实现方式中, 结合第十三方面, 所述緩存器为联合 发送緩存器 JT Buffer, 所述处理器具体用于: 根据获取的所述 STA发送的需要联合发送的数据指示, 从本地接入 类型緩存器中选择需要联合发送的数据; 其中, 所述本地接入类型包括: 语音接入类型 AC— VO、 视频接入类型 AC— VI、 最大努力的接入类型 AC— BE或背景的接入类型 AC— BK; 确认所述数据的数据类型为联合发送。 在第六种可能的实现方式中, 结合第五种可能的实现方式, 所述指 示信息为预存在所述 JT Buffer緩存器的指令命令指示的数据发送顺序, 所述处理器具体用于: 若所述数据的数据类型为联合发送, 则根据所述预存在所述 JT Buffer 緩存器的指令命令指示的数据发送顺序将所述数据存入所述 JT Buffer緩存器中; 其中, 所述指示命令是所述 AP存储在所述 JT Buffer 緩存器中的。
第十四方面, 提供一种 AP , 其特征在于, 应用于协作传输中, 所述 AP包括: 至少一个处理器、 存储器、 通信接口和总线, 所述至少一个处 理器、存储器和通信接口通过总线连接并完成相互间的通信, 所述存储器 用于存储程序代码, 其中:
所述处理器, 用于调用存储器中的程序代码, 用以执行以下操作: 接收站点 STA发送的信道信息; 发送所述信道信息至主 AP , 以便于所述主 AP根据所述信道信息和 预编码准则计算得到预编码矩阵并通过指示信息发送至所述 AP; 其中, 所述指示信息中携带所述预编码矩阵和所有的所述 A P对应的流指示; 所 述流指示用于指示各个所述 AP 使用所述预编码矩阵的部分和对应的流 数;
接收所述主 AP发送的预编码矩阵; 根据所述预编码矩阵获取子预编码矩阵; 根据所述子预编码矩阵对输入数据进行编码。 在第一种可能的实现方式中, 结合第十四方面, 所述处理器具体用 于:
根据获取到的所述流指示和所述预编码矩阵计算得到所述子预编码 矩阵; 其中, 所述流指示中携带了所述子预编码矩阵的子矩阵。 第十五方面, 提供一种主 AP , 应用于协作传输中, 所述主 AP包括: 至少一个处理器、 存储器、 通信接口和总线, 所述至少一个处理器、 存储 器和通信接口通过总线连接并完成相互间的通信,所述存储器用于存储程 序代码, 其中: 所述处理器, 用于调用存储器中的程序代码, 用以执行以下操作: 发送数据至站点 STA; 其中, 所述数据可以指示参与协作传输的所 有的 AP和 STA; 接收所述 STA在收到所述数据后发送的确认 ACK帧,以便于所述参 与协作传输的任一 A P确定自己的数据发送时间,避免冲突的发生;其中, 所述 ACK帧中携带参与协作传输的所有的 AP和 STA。 在第一种可能的实现方式中, 结合第十五方面, 所述处理器还用于: 获取所述任一 STA发送的传输成功的响应块确认 BA。 本发明的实施例提供的传输方法和装置, 在同步、 数据等信息共享、 信道信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传 输方案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和 数据方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展 应用场景。 附图说明
对实施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见 地, 下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术 人员来讲, 在不付出创造性劳动的前提下,还可以根据这些附图获得其他 的附图。 图 1为本发明的实施例提供的一种传输方法的流程示意图;
图 2为本发明的实施例提供的另一种传输方法的流程示意图; 图 3为本发明的实施例提供的又一种传输方法的流程示意图; 图 4为本发明的实施例提供的再一种传输方法的流程示意图; 图 5为本发明的另一实施例提供的一种传输方法的流程示意图; 图 6为本发明的另一实施例提供的另一种传输方法的流程示意图; 图 7为本发明的另一实施例提供的又一种传输方法的流程示意图; 图 8为本发明的另一实施例提供的再一种传输方法的流程示意图; 图 9为本发明的又一实施例提供的一种传输方法的流程示意图; 图 10为本发明的又一实施例提供的另一种传输方法的流程示意图; 图 11为本发明的又一实施例提供的又一种传输方法的流程示意图; 图 12为本发明的实施例提供的一种支持联合发送的增强型分布式信 道接入的结构示意图;
图 13为本发明的实施例提供的另一种支持联合发送的增强型分布式 信道接入的结构示意图;
图 14为本发明的又一实施例提供的再一种传输方法的流程示意图; 图 15为本发明的实施例提供的又一种支持联合发送的增强型分布式 信道接入的结构示意图;
图 16为本发明的再一实施例提供的一种传输方法的流程示意图; 图 17为本发明的实施例提供的一种应用于两个协作传输的 AP的发 射框架图;
图 18为本发明的再一实施例提供的另一种传输方法的流程示意图; 图 19为本发明的实施例提供的一种数据发送过程流程示意图; 图 20为本发明的实施例提供的一种 AP的结构示意图;
图 21为本发明的实施例提供的另一种 AP的结构示意图;
图 22为本发明的实施例提供的又一种 AP的结构示意图; 图 23为本发明的实施例提供的再一种 AP的结构示意图;
图 24为本发明的实施例提供的一种 STA的结构示意图; 图 25为本发明的实施例提供的另一种 STA的结构示意图; 图 26为本发明的实施例提供的又一种 STA的结构示意图; 图 27为本发明的实施例提供的再一种 STA的结构示意图; 图 28为本发明的另一实施例提供的一种 AP的结构示意图; 图 29为本发明的另一实施例提供的另一种 AP的结构示意图; 图 30为本发明的另一实施例提供的又一种 AP的结构示意图; 图 31为本发明的另一实施例提供的再一种 AP的结构示意图; 图 32为本发明的又一实施例提供的一种 AP的结构示意图; 图 33为本发明的又一实施例提供的另一种 AP的结构示意图; 图 34为本发明的又一实施例提供的又一种 AP的结构示意图; 图 35为本发明的实施例提供的一种主 AP的结构示意图; 图 36为本发明的实施例提供的另一种主 AP的结构示意图; 图 37为本发明的又一实施例提供的再一种 AP的结构示意图; 图 38为本发明的另一实施例提供的一种 STA的结构示意图; 图 39为本发明的再一实施例提供的一种 AP的结构示意图; 图 40为本发明的再一实施例提供的另一种 AP的结构示意图; 图 41为本发明的实施例提供的又一种主 AP的结构示意图。 具体实施方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案 进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施 例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员 在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保 护的范围。 本发明的实施例提供一种传输方法, 应用于协作传输中, 参照图 1 所示, 该方法包括以下步骤: 101、 接入点 (Access Point , 简称 AP ) 获取参数值。 其中, 参数值为 AP的晶振频率与参考 AP的晶振频率的频率差值或 者 AP相对于参考 AP的时延差值。
102、 当 AP与参考 AP同时发送数据时, AP根据参数值补偿相位差 异或者时间差值。 本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用 场景。
本发明的实施例提供一种传输方法, 应用于协作传输中, 参照图 2 所示, 该方法包括以下步骤:
201、 站点 ( Station, 简称 STA ) 至少重复两次接收接入点 AP发送 的第一信道测量的符号。
202、 STA至少重复两次接收参考 AP发送的第二信道测量的符号。
203、 STA根据第一信道测量的符号计算与 AP的第一信道矩阵。
204、 STA根据第二信道测量的符号计算与参考 AP的第二信道矩阵。
205、 STA根据第一信道矩阵和第二信道矩阵计算获得 AP的晶振频 率与参考 AP的晶振频率的频率差值。 本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用 场景。 本发明的实施例提供一种传输方法, 应用于协作传输中, 参照图 3 所示, 该方法包括以下步骤:
301、 接入点 AP判断获取的站点 STA发送的数据的数据类型。
302、 若数据的数据类型为联合发送, 则 AP按照指示信息将数据存 入緩存器中。
303、 当主 AP发送数据时, AP读取緩存器并发送緩存器中的数据。 其中, 主 AP为任一具有控制功能的 AP。 本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用 场景。
本发明的实施例提供一种传输方法, 应用于协作传输中, 参照图 4 所示, 该方法包括以下步骤:
401、 接入点 AP接收站点 STA发送的信道信息。
402、 AP发送信道信息至主 AP , 以便于主 AP根据信道信息和预编 码准则计算得到预编码矩阵并通过指示信息发送至 AP。 其中, 指示信息中携带预编码矩阵和所有的 AP对应的流指示; 流指 示用于指示各个 AP使用预编码矩阵的部分和对应的流数。
403、 AP接收主 AP发送的预编码矩阵。
404、 AP根据预编码矩阵获取子预编码矩阵。
405、 AP根据子预编码矩阵对输入数据进行编码。 本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用 场景。
本发明的实施例提供一种传输方法, 应用于协作传输中, 参照图 5 所示, 该方法包括以下步骤:
501、 主 AP发送数据至站点 STA。 其中, 该数据可以指示参与协作传输的所有的 AP和 STA。
502、 主 AP接收 STA在收到数据后发送的确认 ACK帧, 以便于参 与协作传输的任一 AP确定自己的数据发送时间, 避免冲突的发生。 其中, ACK帧中携带参与协作传输的所有的 AP和 STA。 本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用 场景。
本发明的实施例提供一种传输方法, 应用于协作传输中, 参数值为 AP的晶振频率与参考 AP的晶振频率的频率差值, 参照图 6所示, 该方 法包括以下步骤: 本实施中提供的信息传输方法主要应用于联合发送、 干扰对齐、 和 协调波束成形中的同步过程中的相位同步中。
601、 AP接收主 AP发送的参考 AP的晶振频率。 其中, 主 AP为任一具有控制功能的 AP。
602、 AP根据参考 AP的晶振频率计算 AP的晶振频率与参考 AP的 参考晶振频率的频率差值。
603、 当 AP与参考 AP同时发送数据时, AP根据 AP的晶振频率与 参考 AP的晶振频率的频率差值补偿相位差异。 本实施例中的相位同步方法主要是釆用互联的有线网络实现相位上 的同步的。 本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用 场景。
本发明的实施例提供一种传输方法, 应用于协作传输中, 参数值为 AP的晶振频率与参考 AP的晶振频率的频率差值, 参照图 7所示, 该方 法包括以下步骤: 本实施中提供的信息传输方法主要应用于联合发送、 干扰对齐、 和 协调波束成形中的同步过程中的相位同步中。
701、 AP发送 AP的晶振频率至主 AP , 以便于主 AP选择参考 AP的 晶振频率并根据参考 AP的晶振频率和 AP的晶振频率计算 AP的晶振频 率与参考 AP的晶振频率的频率差值。 其中, 主 AP为任一具有控制功能的 AP。
702、 AP接收主 AP发送的 AP的晶振频率与参考 AP的晶振频率的 频率差值。
703、 当 AP与参考 AP同时发送数据时, AP根据 AP的晶振频率与 参考 AP的晶振频率的频率差值补偿相位差异。 本实施例中的相位同步方法主要是釆用互联的有线网络实现相位上 的同步的。 本发明的实施例可以在数据发送时有效的抵消或补偿晶振差异导致 的发送数据相位差异, 令多个发送端能够同步的发送数据。 本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用 场景。
本发明的实施例提供一种传输方法, 应用于协作传输中, 参数值为
AP的晶振频率与参考 AP的参考晶振频率的频率差值, 参照图 8所示, 该方法包括以下步骤: 本实施中提供的信息传输方法主要应用于联合发送、 干扰对齐、 和 协调波束成形中的同步过程中的相位同步中。本实施例中的相位同步方法 是通过无线网络实现的。
801、 AP 至少重复两次发送第一信道测量的符号至站点 STA, 以便 于 STA根据第一信道测量的符号两次计算与 AP 的第一信道矩阵, 并根 据该第一信道矩阵和得到的第二信道矩阵计算 AP的晶振频率与参考 AP 的晶振频率的频率差值。
其中, 第一信道矩阵和第二信道矩阵的信道参数矩阵均不变; 第二 信道矩阵是 STA根据参考 AP发送的第二信号测量符号计算得到的与参 考 AP的信道矩阵。信道矩阵为信道参数矩阵与频率差值相乘导致的相位 差。
两次发送的信道测量符号的间隔可以为 = ^ _ , 其中, 。为初始发 送信道测量符号的时刻, ^为第二次发送信道测量符号的时刻。 具体的, 重复两次发送信道测量符号时可以是连续发送也可以是不 连续发送, 只要可以保证两次测量获得的信道参数矩阵 相同即可。
802、 STA至少重复两次接收 AP发送的第一信道测量的符号。
803、 STA至少重复两次接收参考 AP发送的第二信道测量的符号。
804、 STA根据该第一信道测量的符号计算与 AP的第一信道矩阵。 805 STA根据第二信道测量的符号计算与参考 AP的第二信道矩阵。 具体的, STA根据两次接收到的第一信道测量的符号计算与 AP的第 一信道矩阵, 以 STA为 STA。 , 参考 AP为^ ^。, 则它们之间在时刻 t2和 t3 的信道矩阵可以为 ^。 )和7 ^。(^)。 其中, 信道矩阵的普遍使用公式为: Hmn it) =
Figure imgf000029_0001
W是发送端 n到接收端 m在时刻 t的信道矩阵, 为发送端 n的晶振频率, w 为接收端 m的晶振频率。 同时, STA根据第 二信道测量的符号两次计算与参考 AP的第二信道矩阵的具体说明同 STA 计算与 AP的第一信道矩阵的相同, 此处不再赘述。
806 STA根据第一信道矩阵获得第一差值。 其中, 第一差值为本地晶振频率与 AP晶振频率的频率差值。
807 STA根据第二信道矩阵获得第二差值。 其中, 第二差值为本地晶振频率与参考 AP晶振频率的频率差值。 以 STA。和 AP。为例进行说明, 57¾。根据信道估计得到受到本地晶振频 率与参考 AP ( APo )晶振频率的频率差值( 。-^。)影响的信道矩阵 ) 后,根据 t2的信道矩阵 。。 和 t3时刻的信道矩阵 。。 )得到此时的相位 產: H °°e / H °°ee - e 。 其中, 为第一次接收 到信道测量的符号的时刻, ^为第二次接收到信道测量的符号的时刻, 。 为发送端 p。第一次发送信道测量的符号时的晶振频率, w。为接收端1 ^ 第一次接收信道测量的符号时的晶振频率。 其中, 本地晶振频率与任一 AP ( APn ) 的晶振频率的频率差值可以 为 ( wr„_ ^。)。 需要说明的是根据第一信道矩阵计算本地晶振频率与任一
A P晶振频率的详细说明参照根据第二信道矩阵计算本地晶振频率与参考 AP晶振频率的解释, 此处不再赘述。
808 STA根据第一差值和第二差值计算得到 AP的晶振频率与参考 AP的晶振频率的频率差值。 具体的, 将第一差值和第二差值相减, 即^5 "与 57¾。的差值和^5。与 57¾。的差值相减: „- 。减去 。- ^。, 可以得到任一 ΑΡ ( ) 与参考 AP ( AP^ ) 的晶振频率的频率差值^
809、 STA发送 AP的晶振频率与参考 AP的晶振频率的频率差值至
AP。
810、 AP接收 STA发送的 AP的晶振频率与参考 AP的晶振频率的频 率差值。
811、 当 AP与参考 AP同时发送数据时, AP根据 AP的晶振频率与 参考 AP的晶振频率的频率差值补偿相位差异。 具体的, 补偿相位差的方法可以是直接在发送数据时乘以相位差的 倒数, 此处只是举例说明补偿相位差的方法, 当然并不限于此, 在具体的 应用中可以根据具体的实施环境选择合适的方法。本实施例中的信道测量 符号可以不局限于一个正交频分复用(Orthogonal Frequency Division Multiplexing , 简称 OFDM 符号, 例如可以为空数据包 +空数据包声明 ( Null Data Packet + Null Data Packet Announcement, 简称 NDPA+NDP ) 的格式, 也可以是普通的两个数据帧。 本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用 场景。
本发明的实施例提供一种传输方法, 应用于协作传输中, 参数值为 AP的晶振频率与参考 AP的晶振频率的频率差值, 参照图 9所示, 该方 法包括以下步骤: 本实施中提供的信息传输方法主要应用于联合发送、 干扰对齐、 和 协调波束成形中的同步过程中的相位同步中,本实施例中的相位同步方法 是通过无线网络实现的。
901、 AP至少重复两次发送第一信道测量的符号至 STA,以便于 STA 和参考 AP根据第一信道测量的符号两次计算与 AP的第一信道矩阵并根 据第一信道矩阵和第二信道矩阵计算 AP的晶振频率与参考 AP的晶振频 率的频率差值。 其中, 第一信道矩阵和第二信道矩阵的信道参数矩阵不变; 第二信 道矩阵为 STA根据参考 AP发送的第二信号测量符号计算得到的与参考 AP的信道矩阵。
902、 STA至少重复两次接收 AP发送的第一信道测量的符号。
903、 STA至少重复两次接收 AP发送的第二信道测量的符号。
904、 STA根据第一信道测量的符号计算与 AP的第一信道矩阵。
905、 STA根据第二信道测量的符号计算与参考 AP的第二信道矩阵。
906、 STA根据第一信道矩阵获得第一差值。 其中, 第一差值为本地晶振频率与 AP晶振频率的频率差值。
907、 STA根据第二信道矩阵获得第二差值。
其中, 第二差值为本地晶振频率与参考 AP晶振频率的频率差值。
908、 STA发送第一差值和第二差值至参考 AP , 以便于参考 AP根据 第一差值和第二差值计算得到 AP的晶振频率与参考 AP的晶振频率的频 率差值,并将 AP的晶振频率与参考 AP的晶振频率的频率差值发送至 AP。
909、 AP接收参考 AP发送的 AP的晶振频率与参考 AP的晶振频率 的频率差值。
910、 当 AP与参考 AP同时发送数据时, AP根据 AP的晶振频率与 参考 AP的晶振频率的频率差值补偿相位差异。 本实施例中的步骤与上述实施例中相同步骤的具体解释相同, 此处 不再赘述。 本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用 场景。
本发明的实施例提供一种传输方法, 应用于协作传输中, 参数值为
AP相对于参考 AP的时延差值, 参照图 10所示, 该方法包括以下步骤: 本实施中提供的信息传输方法主要应用于联合发送、 干扰对齐、 和 协调波束成形中的同步过程中的相位同步中。 本发明的实施例在实施之 前, 需要先通过网络互联同步各个 AP之间的时钟。 例如可以是釆用电气 与电子工程师协会 ( Institute of Electrical and Electronic Engineers, 简称 IEEE ) 1588标准将同步误差减小到 10ns。
1001、 接入点 AP接收 STA发送的信号帧。 其中, 该信号帧中携带参考时间。 该信号帧的目的是为了让多个 AP 能够同时计算从 STA发送到 AP 接收的时延。 具体的, 参考时间可以是 STA的本地时间, 也可以是简单任意设置 的一个时间值。 具体的, 该时延由三部分时延构成: 发送端处理时延7^、 信道传播 时延7 ^和接收端处理时延 ^。 从发送端参考 STA ^。到接收端任一
AP APn总的时延 T„o = ΤΤΧ η) + TD no +
Figure imgf000032_0001
1002、 AP 根据参考时间计算得到 STA 的发送时延与传播时延的和 值。 具体的,将本地时钟减去该信号帧中的参考时间和 AP接收的处理时 延, 得到 STA的发送时延与从 STA到 AP的传播时延的和。 令假设 。为参考 AP , 。计算的1 。到^ ^。的发送时延与传播时延的 和为: Τ。。 _ Τ = Ττχ'。 + 。。; ΑΡη计算的 到 APn的发送时延与传播时延的 和为 TnQ― = TTX,Q + TD,n() 1003 AP将获得的 STA的发送时延与传播时延的和值与参考 AP获 得的 STA的发送时延与传播时延的和值相减, 获得相对于参考 AP 的传 播时延差值和发送的处理时延差值。
其中, 参考 AP获得的 STA的发送时延与传播时延的和值是参考 AP 根据参考时间计算得到并发送至 AP的。
具体的, 将 AP和参考 AP获得的发送时延与传播时延的和相减, 即 可得到 AP相对于参考 AP的时延差。
根据上述步骤中得到的 AP和参考 AP获得的发送时延与传播时延的 和, AP ( APn ) 相对于参考 AP ( 。 ) 到达 57¾。的传播时延差为:
Figure imgf000033_0001
发送端处理时延7^和接收端处理时延7 ^受到具体产品实现的影响, 不同的发送端或接收端各不相同; 但对于固定的发送端或接收端来说, 是 一个确定的数值。
1004、 当 AP与参考 AP 同时发送数据时, AP根据 AP相对于参考
AP的时延差值补偿时间差值。 具体的, 补偿时间差值的方法可以是: 在同时发送数据时, AP将发 送数据的时间相对于参考 AP按时间差值提前或者滞后。
对于不同的 STA , AP与参考 AP之间的时间差不同。 对于 AP与参 考 AP要同时服务多个 STA的情况, AP可以获得相对于多个 STA的时间 差值,具体的时间差值补偿需要考虑正交频分复用(Orthogonal Frequency Division Multiplexing , 简称 OFDM ) 符号在循环前缀 ( Cyclic Prefix , 简 称 CP ) 长度的约束下, 对各个 AP 共同求解出一个时间补偿量, 令 AP 到达所有 STA的时延都小于所发送信号所釆用的 CP长度。
以 n个 AP (其中 ^5。为参考 AP )和 m个 STA为例,令 CP长度为 , 则补偿后的时延和时延差都需要满足下面的不等式:
Τ < Tcp TD, TD, , < Tcp , n≠ n 其中, ^, 和7 λ '为不同信道的传播时延。 本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用 场景。
本发明的实施例提供一种传输方法, 应用于协作传输中, 緩存器为 联合发送的接入类另 'J ( Access Category Joint Transmission, 简称 AC— JT ) 緩存器, 参照图 11所示, 该方法包括以下步骤: 本实施中提供的信息传输方法主要应用于联合发送过程中的数据共 享的过程中。 本实施中主 AP或者 AP的控制器会预先为需要联合发送的 数据打上联合发送的标签和这些数据在联合发送时需要遵从的的顺序,并 将这些数据通过有线网络共享给其他参与联合发送的 AP。
1101、 AP根据数据自身携带的联合发送的指示( Joint Transmission— Indication, 简称 JT— IDX ) 判断数据的数据类型。
1102a, 若数据的数据类型为联合发送, 则 AP按照数据自身携带的 数据发送顺序将数据存入 AC— JT緩存器中。
1102b , 若数据的数据类型为联合发送, 则 AP将数据归类为 AC— JT 接入类型。
1103b、 AP根据指示命令中指示的数据发送顺序,将数据存入 AC— JT 緩存器中。
其中, 指示命令携带在数据中。 在步骤 1102a和步骤 1103b之后执行以下步骤:
1104、 若数据的数据类型不是联合发送, 则 AP根据数据自身携带的 业务分类信息将数据存入数据对应的接入类型队列。 其中, 不是用于联合发送的数据对应的接入型队列可以是语音接入 类型 (Access Category voice , 简称 AC— VO )、 视频接入类型 (Access Category Video ,简称 AC— VI )、最大努力的接入类型( Access Category best effort, 简称 AC— BE ) 或背景的接入类型 ( Access Category background, 简称 AC— BK:)。
AC— JT 类型的緩存器的增强型分布式信道接入函数实体 (Enhanced Distributed Channel Access Function, 简称 EDCAF ) 具有最高的优先级, 但是在用于联合发送时, 才需要激活该緩存器。 其中, 本实施中的数据是 来自于媒体访问控制 ( Media Access Control , 简称 MAC ) 层以上的。 本实施中以一种基于接入机制(Enhanced Distributed Channel Access , 简称 EDCA)的设计来说明支持联合发送的数据发送时的 EDCA结构, 若 执行步骤 1102a, 则该 EDCA 结构如图 12 所示; 其中, 联合发送指示 JT— IDX、 MAC服务数据单元( Media Access Control service Data Unit) , 简称 MSDU )和用户优先级( user priority, 简称 UP )存在于同一模块中。 若执行步骤 1102b和 1103b , 则对应的 EDCA结构为如图 13所示; 其中, MSDU和 JT— IDX用于指示第一判断模块并发送第一指示信息, MSDU和 UP用于指示第二判断模块。
具体的, 本实施例中的緩存器均属于队列, 是先入先出的结构, 即 先进入队列的数据先从队列中输出。 本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用 场景。
本发明的实施例提供一种传输方法, 应用于协作传输中, 緩存器为 联合发送緩存器 ( Joint Transmission Buffer, 简称 JT Buffer ), 参照图 14 所示, 该方法包括以下步骤: 本实施中提供的信息传输方法主要应用于联合发送过程中的数据共 享的过程中。 本实施中主 AP或者 AP的控制器会预先为需要发送的数据 打上联合发送的标签和这些数据在联合发送时需要遵从的的顺序。
1201、 AP根据获取的 STA发送的需要联合发送的数据指示, 从本地 接入类型中选择需要联合发送的数据。 其中, 本地接入类型包括: 语音接入类型 AC— VO、 视频接入类型 AC— VI、 最大努力的接入类型 AC— BE或背景的接入类型 AC— BK。
1202、 AP确认数据的数据类型为联合发送。
1203、 若数据的数据类型为联合发送, 则 AP根据预存在 JT Buffer 緩存器的指令命令指示的数据发送顺序将数据存入 JT Buffer緩存器中。
具体的, 指令命令是 AP存储在 JT Buffer緩存器中的。
AC— JT类型的緩存器的 EDCAF具有最高的优先级,但是仅当用于联 合发送时, 才需要激活该緩存器。
本实施例中的緩存器均属于队列, 是先入先出的结构, 即先进入队 列的数据先从队列中输出。
本实施中以一种基于接入机制(Enhanced Distributed Channel Access, 简称 EDCA)的设计来说明支持联合发送的数据发送时的 EDCA结构, 该 EDCA结构如图 15所示 本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用 场景。
本发明的实施例提供一种传输方法, 应用于协作传输中, 参照图 16 所示, 该方法包括以下步骤: 本实施中提供的信息传输方法主要应用于联合发送、 干扰对齐以及 协调波束成形过程中的信道信息获得的过程中。 本实施例在实施之前, 需 要先根据一定的准则将 AP和 STA分组, 本实施例中的与主 AP通信的任 一 AP与主 AP在同一组中。
1301、 AP接收站点 STA发送的信道信息。
1302、 AP发送信道信息至主 AP , 以便于主 AP根据信道信息和预编 码准则计算得到预编码矩阵并通过指示信息发送至 AP。 其中, 指示信息中携带预编码矩阵和所有的 AP对应的流指示; 流指 示用于指示各个 AP使用预编码矩阵的部分和对应的流数。 该指示信息可 以是主 AP 以广播信息的形式发送的也可以是主 AP 逐一发送至所有的 AP。
1303、 主 AP接收 AP发送的信道信息。
1304、 主 AP根据信道信息和预编码准则计算预编码矩阵。 本实施例中计算预编码矩阵可以是根据信道信息中携带的流指示信 息和预编码准则计算得到的, 具体可以为按照流指示信息指示的各个 AP 使用预编码矩阵的部分和对应的流数计算得到预编码矩阵。 当然, 也可以 是釆用主 AP根据预编码矩阵与任一 AP的对应关系,将预编码矩阵拆分, 之后发送拆分后的预编码矩阵至对应的 AP。
1305、 AP接收主 AP发送的预编码矩阵。
1306、 A P根据获取到的流指示和预编码矩阵计算得到子预编码矩阵。 其中, 流指示中携带了子预编码矩阵的子矩阵。 具体的,流指示信息携带了预编码矩阵与对应 AP的子预编码矩阵的 关系。根据流指示信息可以根据预编码矩阵确定子预编码矩阵的哪些部分 需要变化, 该子预编码矩阵的列由空间流数确定, 行数与预编码矩阵的行 数相同, 除对应位置与预编码矩阵相同外, 在子预编码矩阵的其它位置处 补零。 在本实施例中, AP根据联合发送的规格, 确定信道编码器的个数和 空间流数。 其中, AP具有的编码器的个数必须相同, 空间流数用于确定 子预编码矩阵的列数。
1307、 AP根据子预编码矩阵对输入数据进行编码。
其中, 每个 AP在获得共享的预编码矩阵后, 按照流指示对预编码矩 阵作出调整。对于联合发送( JT )的情况,需要空间映射( Spatial Mapping ) 模块之前的所有模块处理维度按照联合发送的维度来处理。
以 N个 AP联合发送为例进行说明, 如果^ ^可以支持的空时流数为 κ" , 尸 Ρ Ρ23
在联合发送时, 一共可以支持 j^„个空时流。 但这要求各 AP在空间映射之前 的模块都按照空时流数目为 ^„的维度来实现。 每个 AP的分流器(Stream
Parser )不仅要相同和同步, 而且在 N个 AP联合发送的情况下, 分流器都必须 能够分出 个空间流。 令空间流和空时流的比值为 d, X为空间映射的输入信号 (维度: d∑Kn n ) , P为预编码矩阵(维度: 的发射天线
Figure imgf000038_0001
数) 。 因此^^的预编码应该选择 Ρ矩阵对应该 ΑΡ的位置 (
Figure imgf000038_0002
, 流指示)以及维度( £„* )。 由于 尸"
共有 ί ^ „个空时流, 但发射天线数仅为 。 因此除了 "以外, 需要对 Ρ的其 他行补零。 以两个 ΑΡ , 每个 ΑΡ两个空时流为例, 联合发送的预编码矩阵为 Ρ ,
其中 Ρ可以写成 Ρ 对于 来说, 根据 本实施例中的得到
Figure imgf000038_0003
1314
p p
子预编码矩阵的原理,可以得到^^的预编码矩阵 S 1 22 1 24
对于 AP7
0 0 0 0
0 0 0 0
来说, 根据本实施例中的得到子预编码矩阵的原理, 可以得到^ ^的预编码矩阵
0 0 0 0
0 0 0 0
p p p
31 1 32 1 33 1 34
P P P
41 1 42 1 43 1 44 具体的, 以两个 AP 为例说明在协作传输时的一种发射框图, 如图 Π所示。每个 AP在获得共享的预编码矩阵后, 按照流指示对预编码矩阵 进行调整。对于联合发送的情况, 需要空间映射模块之前的所有模块处理 维度按照联合发送的维度来处理。 本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用 场景。
本发明的实施例提供一种传输方法, 应用于协作传输中, 参照图 18 所示, 该方法包括以下步骤: 本实施中提供的信息传输方法主要应用于联合发送、 干扰对齐以及 协调波束成形过程中的信道信息获得的过程中。
1401、 主 AP发送数据至站点 STA。 其中, 数据可以指示参与协作传输的所有的 AP和 STA。
1402、 主 AP接收 STA在收到数据后发送的确认 ACK帧, 以便于参 与协作传输的任一 AP确定自己的数据发送时间, 避免冲突的发生。 1403、 主 AP 获取任一 STA 发送的传输成功的响应块确认 ( Block ACK, 简称 BA )。
具体的 , 本实施例中给出一种以两个 AP和两个 STA为例进行说明 数据发送过程的示意图, 参照图 19所示。
在本实施例中通过 AP与 STA的数据传输, 参与协作传输的任一 AP 可以通过本实施例中的 AP发送的数据和 STA 回复的确认帧获知自己应 该在接下来共同传输数据的过程中需要在固定时间开始参与协作传输。其 中, 该固定时间可以是短帧间隔 ( Short Interframe Space , 简称 SIFS ) 或 者点十办调中贞间隔 ( Point Coordination Function Interframe Space , 简称 PIFS ), 当然该固定时间并不限于此, 此处只是举例说明, 可以根据具体 的实施环境选择合适的时长。
PIFS 是现有的无线局域网标准中规定的一种帧间隔。 例如 , IEEE 802.11b中规定的时长为 30us微秒、 Slot time为 20us , IEEE 802.11a中规 定的时长为 25us、 Slot time为 9us , IEEE 802. l lg中规定的时长为 19us 或者 30us、 Slot time为 9 us 或者 20us, PIFS的时长等于 SIFS时长加上 时隙 Slot time时长。
SIFS在现有的无线局域网中是固定值, 例如, IEEE 802.11b中规定 的时长为 lOus, IEEE 802.11a中规定的时长为 16us , IEEE 802. l lg中规 定的时长为 10us。
具体的, AP中的主 AP可以在发起数据传输的其实阶段通过空口的 信令或者数据交换来告知参与协作传输的所有 AP对同步发送的调整并开 始传输数据, 也可以是通过互联的有线网络实现的。
其中, 传输的数据可以是请求发送( Request To Send, 简称 RTS )帧, 此时 STA回复的则是允许发送( clear to send , 简称 CTS ) 帧。 当然, 传 输的数据也可以是用于协作传输开始的通知, 此时 STA需要回复专用的 帧。
本发明的实施例提供的传输方法, 在同步、 数据等信息共享、 信道 信息的获得和数据发送方面在协作传输的应用中 通过提供将协作传输方 案应用到实际网络中的同步、数据等信息的共享 信道信息的获得和数据 方法的技术方案, 降低了开销、 提高了工作效率 同时, 还可以扩展应用 场景。
本发明的实施例提供一种 AP 15 , 应用于协作传输中, 参照图 20所 示, 包括: 获取单元 1501和处理单元 1502 , 其中: 获取单元 1501 , 用于获取参数值。
其中, 参数值为 AP的本地晶振频率与参考 AP的参考晶振频率的频 率差值或者 AP相对于参考 AP的时延差值。 处理单元 1502 , 用于当 AP与参考 AP同时发送数据时, 根据参数值 补偿相位差异或者时间差值。
进一步,参数值为 AP的晶振频率与参考 AP的晶振频率的频率差值, 参照图 21所示,获取单元 1501 包括:接收模块 15011和计算模块 15012 , 其巾:
接收模块 15011 , 用于接收主 AP发送的参考 AP的晶振频率。
其中, 主 AP为任一具有控制功能的 AP。
计算模块 15012 , 用于根据参考 AP的晶振频率计算 AP的晶振频率 与参考 AP的晶振频率的频率差值。
进一步,参数值为 AP的晶振频率与参考 AP的晶振频率的频率差值, 参照图 22所示, 获取单元 1501还包括: 发送模块 15013 , 其中:
发送模块 15013 , 用于发送 AP的晶振频率至主 AP , 以便于主 AP选 择参考 AP的晶振频率并根据参考 AP的晶振频率和 AP的晶振频率计算 AP的晶振频率与参考 AP的晶振频率的频率差值。 接收模块 15011 , 还用于接收主 AP发送的 AP的本地晶振频率与参 考 AP的参考晶振频率的频率差值。 进一步,参数值为 AP的晶振频率与参考 AP的晶振频率的频率差值, 其巾:
发送模块 15013 , 还用于至少重复两次发送第一信道测量的符号至 STA , 以便于 STA根据第一信道测量的符号两次计算与 AP的第一信道矩 阵, 并根据第一信道矩阵和得到的第二信道矩阵计算 A P的晶振频率与参 考 AP的晶振频率的频率差值。
其中, 第一信道矩阵和第二信道矩阵的信道参数矩阵均不变; 第二 信道矩阵是 STA根据参考 AP发送的第二信道测量的符号计算得到的与 参考 AP的信道矩阵。 接收模块 15011 ,还用于接收站点 STA发送的 AP的晶振频率与参考 AP的晶振频率的频率差值。
进一步,参数值为 AP的晶振频率与参考 AP的晶振频率的频率差值, 其巾:
发送模块 15013 ,还用于至少重复两次发送第一信道测量的符号至站 点 STA, 以便于 STA和参考 AP根据第一信道测量的符号两次计算与 AP 的第一信道矩阵并根据第一信道矩阵和第二信道矩阵计算 AP的晶振频率 与参考 AP的晶振频率的频率差值。
其中, 第一信道矩阵和第二信道矩阵的信道参数矩阵不变; 第二信 道矩阵为 STA根据参考 AP发送的第二信道测量的符号计算得到的与参 考 AP的信道矩阵。
接收模块 15011 , 还用于接收参考 AP发送的 AP的晶振频率与参考 AP的晶振频率的频率差值。 进一步, 参照图 23所示, 参数值为 AP相对于参考 AP的时延差值, 获取单元 1501还包括: 获取模块 15014 , 其中: 接收模块 15011 , 还用于接收 STA发送的信号帧。 计算模块 15012 , 还用于根据参考时间计算得到 STA的发送时延与 传播时延的和值。 获取模块 15014 , 用于将获得的 STA的发送时延与传播时延的和值 与参考 AP获得的 STA 的发送时延与传播时延的和值相减, 获得相对于 参考 AP的传播时延差值和发送的处理时延差值。 其中, 参考 AP获得的 STA的发送时延与传播时延的和值是参考 AP 根据参考时间计算得到并发送至 AP的。
本发明的实施例提供的 AP , 在同步、 数据等信息共享、 信道信息的 获得和数据发送方面在协作传输的应用中,通过提供将协作传输方案应用 到实际网络中的同步、数据等信息的共享、信道信息的获得和数据方法的 技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用场景。
本发明的实施例提供一种 STA16 , 应用于协作传输中, 参照图 24所 示, 包括: 接收单元 1601、 计算单元 1602和获取单元 1603 , 其中: 接收单元 1601 , 用于至少重复两次接收接入点 AP发送的第一信道 测量的符号。 接收单元 1601 , 还用于至少重复两次接收参考 AP发送的第二信道 测量的符号。 计算单元 1602 , 用于根据第一信道测量的符号计算与 AP 的第一信 道矩阵。 计算单元 1602 , 还用于根据第二信道测量的符号计算与参考 AP 的 第二信道矩阵。
获取单元 1603 ,用于根据第一信道矩阵和第二信道矩阵计算获得 AP 的晶振频率与参考 AP的晶振频率的频率差值。 进一步, 参照图 25所示, 计算单元 1602 , 包括: 获取模块 16021和 计算模块 16022 , 其中: 获取模块 16021 , 用于根据第一信道矩阵获得第一差值。 其中, 第一差值为本地晶振频率与 AP晶振频率的频率差值。 获取模块 16021 , 还用于根据第二信道矩阵获得第二差值。
其中, 第二差值为本地晶振频率与参考 AP晶振频率的频率差值。 计算模块 16022 , 用于根据第一差值和第二差值计算得到 AP的晶振 频率与参考 AP的晶振频率的频率差值。
进一步, 参照图 26所示, 该 STA还包括: 发送单元 1604 , 其中: 发送单元 1604 ,用于发送 AP的晶振频率与参考 AP的晶振频率的频 率差值至 AP。 具体的, 参照图 27所示, 计算单元 1602还包括: 发送模块 16023 , 其巾:
获取模块 16021 , 还用于根据第一信道矩阵获得第一差值。 其中, 第一差值为本地晶振频率与 AP晶振频率的频率差值。 获取模块 16021 , 还用于根据第二信道矩阵获得第二差值。
其中, 第二差值为本地晶振频率与参考 AP晶振频率的频率差值。 发送模块 16023 , 用于发送第一差值和第二差值至参考 AP , 以便于 参考 AP根据第一差值和第二差值计算得到 AP的晶振频率与参考 AP的 晶振频率的频率差值, 并将 AP的晶振频率与参考 AP的晶振频率的频率 差值发送至 AP。 本发明的实施例提供的 STA , 在同步、 数据等信息共享、 信道信息 的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方案应 用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据方法 的技术方案, 降低了开销、提高了工作效率。 同时,还可以扩展应用场景。
本发明的实施例提供一种 AP 17 , 应用于协作传输中, 参照图 28所 示, 包括: 判断单元 1701和处理单元 1702 , 其中:
判断单元 1701 , 用于判断获取的 STA发送的数据的数据类型。
处理单元 1702 , 用于若数据的数据类型为联合发送, 则按照指示信 息将数据存入緩存器中。
当主 AP发送数据时, 读取緩存器并发送緩存器中的数据。
其中, 主 AP为任一具有控制功能的 AP。 具体的,緩存器为联合发送的接入类别 AC— JT緩存器,判断单元 1701 具体用于:
根据数据自身携带的联合发送的指示 JT— IDX判断数据的数据类型。 进一步,指示信息为数据自身携带的数据发送顺序,参照图 29所示, 处理单元 1702包括: 第一处理模块 17021 , 其中: 第一处理模块 17021 , 用于若数据的数据类型为联合发送, 则按照数 据自身携带的数据发送顺序将数据存入 AC— JT緩存器中。
进一步, 指示信息为指示命令中指示的数据发送顺序, 参照图 30所 示, 处理单元 1702包括还: 第二处理模块 17022 , 其中: 第二处理模块 17022 , 用于若数据的数据类型为联合发送, 则将数据 归类为 AC— JT接入类型。
第二处理模块 17022 , 还用于根据指示命令中指示的数据发送顺序, 将数据存入 AC— JT緩存器中。
其中, 指示命令携带在数据中。 进一步, 参照图 31所示, 该 AP还包括: 存储单元 1703 , 其中: 存储单元 1703 , 用于若数据的数据类型不是联合发送, 则根据数据 自身携带的业务分类信息将数据存入数据对应的接入型队列。
具体的, 緩存器为联合发送緩存器 JT Buffer, 参照图 32所示, 判断 单元 1701 包括: 选择模块 17011和确认模块 17012 , 其中: 选择模块 17011 , 用于根据获取的 STA发送的需要联合发送的数据 指示, 从本地接入类型緩存器中选择需要联合发送的数据。 其中, 本地接入类型包括: 语音接入类型 AC— VO、 视频接入类型 AC— VI、 最大努力的接入类型 AC— BE或背景的接入类型 AC— BK。 确认模块 17012 , 用于确认数据的数据类型为联合发送。
进一步, 指示信息为预存在 JT Buffer緩存器的指令命令指示的数据 发送顺序, 参照图 33所示, 处理单元 1702还包括: 第三处理模块 17023 , 其巾:
第三处理模块 17023 , 用于若数据的数据类型为联合发送, 则根据预 存在 JT Buffer 緩存器的指令命令指示的数据发送顺序将数据存入 JT Buffer緩存器中。
其中, 指令命令是 AP存储在 JT Buffer緩存器中的。 本发明的实施例提供的 AP , 在同步、 数据等信息共享、 信道信息的 获得和数据发送方面在协作传输的应用中,通过提供将协作传输方案应用 到实际网络中的同步、数据等信息的共享、信道信息的获得和数据方法的 技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用场景。
本发明的实施例提供一种 AP18 , 应用于协作传输中, 参照图 34所 示, 包括: 接收单元 1801、 发送单元 1802、 获取单元 1803 和编码单元 1804 , 其中: 接收单元 1801 , 用于接收站点 STA发送的信道信息。 发送单元 1802, 用于发送信道信息至主 AP , 以便于主 AP根据信道 信息和预编码准则计算得到预编码矩阵并通过指示信息发送至 AP。
其中, 指示信息中携带预编码矩阵和所有的 AP对应的流指示; 流指 示用于指示各个 A P使用所述预编码矩阵的部分和对应的流数。 接收单元 1801 , 还用于接收主 AP发送的预编码矩阵。 获取单元 1802 , 用于根据预编码矩阵获取子预编码矩阵。 编码单元 1803 , 用于根据子预编码矩阵对输入数据进行编码。 进一步, 获取单元 1802具体用于: 根据获取到的流指示和预编码矩阵计算得到子预编码矩阵。
其中, 流指示中携带了子预编码矩阵的子矩阵。 本发明的实施例提供的 AP , 在同步、 数据等信息共享、 信道信息的 获得和数据发送方面在协作传输的应用中,通过提供将协作传输方案应用 到实际网络中的同步、数据等信息的共享、信道信息的获得和数据方法的 技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用场景。
本发明的实施例提供一种主 AP 19 , 应用于协作传输中, 参照图 35 所示, 包括: 发送单元 1901和接收单元 1902 , 其中:
发送单元 1901 , 用于发送数据至站点 STA。 其中, 数据可以指示参与协作传输的所有的 AP和 STA。 接收单元 1902 , 用于接收 STA在收到数据后发送的确认 ACK帧。 以便于参与协作传输的任一 AP确定自己的数据发送时间, 避免冲突的发 生。
其中, ACK帧中携带参与协作传输的所有的 AP和 STA。 进一步, 参照图 36所示, 主 AP 19还包括: 获取单元 1903 , 其中: 获取单元 1903 , 用于获取任一 STA 发送的传输成功的响应块确认
BA。 本发明的实施例提供的主 AP , 在同步、 数据等信息共享、 信道信息 的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方案应 用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据方法 的技术方案, 降低了开销、提高了工作效率。 同时,还可以扩展应用场景。 本发明的实施例提供一种 AP20 , 应用于协作传输中, 参照图 37所 示, 包括: 至少一个处理器 2001、 存储器 2002、 通信接口 2003 和总线 2004 ,至少一个处理器 2001、存储器 2002和通信接口 2003通过总线 2004 连接并完成相互间的通信, 存储器 2001用于存储程序代码, 其中:
该总线 2004 可以是工业标准体系 结构 ( Industry Standard Architecture , 简称为 ISA ) 总线、 夕卜部设备互连 ( Peripheral Component Interconnect , 简称为 PCI ) 总线或扩展工业标准体系结构 ( Extended Industry Standard Architecture , 简称为 EISA ) 总线等。 该总线 2004可以 分为地址总线、 数据总线、 控制总线等。 为便于表示, 图 37中仅用一条 粗线表示, 但并不表示仅有一根总线或一种类型的总线。 其中:
存储器 2002用于存储程序代码, 该程序代码包括操作指令。 存储器 2002 可能包含高速 RAM 存储器, 也可能还包括非易失性存储器 ( non-volatile memory ), 例如至少一个磁盘存 4渚器。
处理器 2001可能是一个中央处理器 ( Central Processing Unit, 简称 为 CPU ), 或者是特定集成电路 ( Application Specific Integrated Circuit, 简称为 ASIC ) , 或者是被配置成实施本发明实施例的一个或多个集成电 路。
通信接口 2003 , 主要用于实现本实施例中的装置之间的通信。
处理器 2001 , 还用于调用存储器 2002中的程序代码, 用以执行以下 操作:
获取参数值。
其中, 参数值为 AP的晶振频率与参考 AP的晶振频率的频率差值或 者 AP相对于参考 AP的时延差值。 当 AP与参考 AP同时发送数据时, 根据参数值补偿相位差异或者时 间差值。
具体的,参数值为 AP的晶振频率与参考 AP的晶振频率的频率差值, 处理器 2001还用于执行以下操作: 接收主 AP发送的参考 AP的晶振频率。 其中, 主 AP为任一具有控制功能的 AP。 根据参考 AP的晶振频率计算 AP的晶振频率与参考 AP的参考晶振 频率的频率差值。 具体可选的, 参数值为 AP的晶振频率与参考 AP的晶振频率的频率 差值, 处理器 2001还用于执行以下操作: 发送 AP的晶振频率至主 AP ,以便于主 AP选择参考 AP的晶振频率 并根据参考 AP的晶振频率和 AP的晶振频率计算 AP的晶振频率与参考 AP的晶振频率的频率差值。 接收主 AP发送的 AP的晶振频率与参考 AP的晶振频率的频率差值。 具体可选的, 参数值为 AP的晶振频率与参考 AP的晶振频率的频率 差值, 处理器 2001还用于执行以下操作: 至少重复两次发送第一信道测量的符号至站点 STA, 以便于 STA根 据第一信道测量的符号两次计算与 AP的第一信道矩阵, 并根据第一信道 矩阵和得到的第二信道矩阵计算 AP的晶振频率与参考 AP的晶振频率的 频率差值。 其中, 第一信道矩阵和第二信道矩阵的信道参数矩阵均不变, 第二 信道矩阵是 STA根据参考 AP发送的第二信道测量的符号计算得到的与 参考 AP的信道矩阵。 接收站点 STA发送的 AP的晶振频率与参考 AP的晶振频率的频率差 值。 具体可选的, 参数值为 AP的晶振频率与参考 AP的晶振频率的频率 差值, 处理器 2001还用于执行以下操作: 至少重复两次发送第一信道测量的符号至站点 STA, 以便于 STA和 参考 AP根据第一信道测量的符号两次计算与 AP的第一信道矩阵并根据 第一信道矩阵和第二信道矩阵计算 AP的晶振频率与参考 AP的晶振频率 的频率差值。 其中, 第一信道矩阵和第二信道矩阵的信道参数矩阵不变, 第二信 道矩阵为 STA根据参考 AP发送的第二信号测量的符号计算得到的与参 考 AP的信道矩阵。 接收参考 AP发送的 AP的晶振频率与参考 AP的晶振频率的频率差 值。
具体可选的, 参数值为 AP相对于参考 AP的时延差值, 处理器 2001 还用于执行以下操作: 接收 STA发送的信号帧。 其中, 信号帧中携带参考时间。 根据参考时间计算得到 STA的发送时延与传播时延的和值。 将获得的 STA的发送时延与传播时延的和值与参考 AP获得的 STA 的发送时延与传播时延的和值相减, 获得相对于参考 AP的传播时延差值 和发送的处理时延差值。 其中, 参考 AP获得的 STA的发送时延与传播时延的和值是参考 AP 根据参考时间计算得到并发送至 AP的。
本发明的实施例提供的 AP , 在同步、 数据等信息共享、 信道信息的 获得和数据发送方面在协作传输的应用中,通过提供将协作传输方案应用 到实际网络中的同步、数据等信息的共享、信道信息的获得和数据方法的 技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用场景。
本发明的实施例提供一种 STA21 , 应用于协作传输中, 参照图 38所 示, 包括: 至少一个处理器 2101、 存储器 2102、 通信接口 2103 和总线 2104 ,至少一个处理器 2101、存储器 2102和通信接口 2103通过总线 2104 连接并完成相互间的通信, 存储器 2101用于存储程序代码, 其中: 该总线 2104 可以是工业标准体系 结构 ( Industry Standard Architecture , 简称为 ISA ) 总线、 夕卜部设备互连 ( Peripheral Component Interconnect , 简称为 PCI ) 总线或扩展工业标准体系结构 ( Extended Industry Standard Architecture , 简称为 EISA ) 总线等。 该总线 2104可以 分为地址总线、 数据总线、 控制总线等。 为便于表示, 图 38中仅用一条 粗线表示, 但并不表示仅有一根总线或一种类型的总线。 其中:
存储器 2102用于存储程序代码, 该程序代码包括操作指令。 存储器 2102 可能包含高速 RAM 存储器, 也可能还包括非易失性存储器 ( non-volatile memory ), 例如至少一个磁盘存 4渚器。
处理器 2101可能是一个中央处理器 ( Central Processing Unit, 简称 为 CPU ), 或者是特定集成电路 ( Application Specific Integrated Circuit, 简称为 ASIC ) , 或者是被配置成实施本发明实施例的一个或多个集成电 路。
通信接口 2103 , 主要用于实现本实施例中的装置之间的通信。
处理器 2101 , 还用于调用存储器 2102中的程序代码, 用以执行以下 操作:
至少重复两次接收 A P发送的第一信道测量的符号。
至少重复两次接收参考 AP发送的第二信道测量的符号。 根据第一信道测量的符号计算与 AP的第一信道矩阵。
根据第二信道测量符号计算与参考 AP的第二信道矩阵。 根据第一信道矩阵和第二信道矩阵计算获得 AP 的晶振频率与参考 AP的晶振频率的频率差值。
具体的, 处理器 2101 , 还用于根据第一信道矩阵获得第一差值。 其中, 第一差值为本地晶振频率与 AP晶振频率的频率差值。
处理器 2101 , 还用于根据第二信道矩阵获得第二差值。
其中, 第二差值为本地晶振频率与参考 AP晶振频率的频率差值。 处理器 2101 , 还用于根据第一差值和第二差值计算得到 AP 的晶振 频率与参考 AP的晶振频率的频率差值。 进一步, 处理器 2101 , 还用于发送 AP的晶振频率与参考 AP的晶振 频率的频率差值至 AP。 具体可选的, 处理器 2101 , 还用于执行以下操作: 根据第一信道矩阵获得第一差值。 其中, 第一差值为本地晶振频率与 AP晶振频率的频率差值。
根据第二信道矩阵获得第二差值。 其中, 第二差值为本地晶振频率与参考 AP晶振频率的频率差值。 发送第一差值和第二差值至参考 AP , 以便于参考 AP根据第一差值 和第二差值计算得到 AP的晶振频率与参考 AP的晶振频率的频率差值, 并将 AP的晶振频率与参考 AP的晶振频率的频率差值发送至 AP。 本发明的实施例提供的 STA , 在同步、 数据等信息共享、 信道信息 的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方案应 用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据方法 的技术方案, 降低了开销、提高了工作效率。 同时,还可以扩展应用场景。
本发明的实施例提供一种 AP22 , 应用于协作传输中, 参照图 39所 示, 包括: 至少一个处理器 2201、 存储器 2202、 通信接口 2203 和总线 2204 ,至少一个处理器 2201、存储器 2202和通信接口 2203通过总线 2204 连接并完成相互间的通信, 存储器 2201用于存储程序代码, 其中: 该总线 2204 可以是工业标准体系 结构 ( Industry Standard Architecture , 简称为 ISA ) 总线、 夕卜部设备互连 ( Peripheral Component Interconnect , 简称为 PCI ) 总线或扩展工业标准体系结构 ( Extended Industry Standard Architecture , 简称为 EISA ) 总线等。 该总线 2204可以 分为地址总线、 数据总线、 控制总线等。 为便于表示, 图 39中仅用一条 粗线表示, 但并不表示仅有一根总线或一种类型的总线。 其中: 存储器 2202用于存储程序代码, 该程序代码包括操作指令。 存储器 2202 可能包含高速 RAM 存储器, 也可能还包括非易失性存储器 ( non-volatile memory ), 例如至少一个磁盘存 4渚器。
处理器 2201可能是一个中央处理器 ( Central Processing Unit, 简称 为 CPU ), 或者是特定集成电路 ( Application Specific Integrated Circuit, 简称为 ASIC ) , 或者是被配置成实施本发明实施例的一个或多个集成电 路。
通信接口 2203 , 主要用于实现本实施例中的装置之间的通信。
处理器 2201 , 还用于调用存储器 2202中的程序代码, 用以执行以下 操作:
判断获取的 STA发送的数据的数据类型。 若数据的数据类型为联合发送, 则按照指示信息将数据存入緩存器 中。
当主 AP发送数据时, 读取緩存器并发送緩存器中的数据。
其中, 主 AP为任一具有控制功能。
具体的, 緩存器为联合发送的接入类别 AC— JT緩存器, 其中: 处理器 2201 , 还用于根据数据自身携带的联合发送的指示 JT— IDX 判断数据的数据类型。
进一步, 指示信息为数据自身携带的数据发送顺序, 处理器 2201 , 还用于若数据的数据类型为联合发送, 则按照数据自 身携带的数据发送顺序将数据存入 AC— JT緩存器中。
进一步可选的, 指示信息为指示命令中指示的数据发送顺序, 其中: 处理器 2201 , 还用于执行以下操作:
若数据的数据类型为联合发送, 则将数据归类为 AC JT接入类型。 根据指示命令中指示的数据发送顺序,将数据存入 AC— JT緩存器中。 其中, 指示命令携带在数据中。 进一步, 处理器 2201 , 还用于若数据的数据类型不是用于联合发送 的, 则根据数据自身携带的业务分类信息将数据存入对应的接入型队列。
具体可选的, 緩存器为联合发送緩存器 JT Buffer, 处理器 2201还用 于执行以下操作: 根据获取的 STA发送的需要联合发送的数据指示, 从本地接入类型 緩存器中选择需要联合发送的数据。
其中, 本地接入类型包括: 语音接入类型 AC— VO、 视频接入类型 AC— VI、 最大努力的接入类型 AC— BE或背景的接入类型 AC— BK。
确认数据的数据类型为联合发送。 进一步, 指示信息为预存在 JT Buffer緩存器的指令命令指示的数据 发送顺序, 其中: 处理器 2201 , 还用于若数据的数据类型为联合发送, 则根据预存在 JT Buffer緩存器的指令命令指示的数据发送顺序将数据存入 JT Buffer緩 存器中。
其中, 指示命令是 AP存储在 JT Buffer緩存器中的。 本发明的实施例提供的 AP , 在同步、 数据等信息共享、 信道信息的 获得和数据发送方面在协作传输的应用中,通过提供将协作传输方案应用 到实际网络中的同步、数据等信息的共享、信道信息的获得和数据方法的 技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用场景。
本发明的实施例提供一种 AP23 , 应用于协作传输中, 参照图 40所 示, 包括: 至少一个处理器 2301、 存储器 2302、 通信接口 2303 和总线 2304 ,至少一个处理器 2301、存储器 2302和通信接口 2303通过总线 2304 连接并完成相互间的通信, 存储器 2301用于存储程序代码, 其中: 该总线 2304 可以是工业标准体系 结构 ( Industry Standard Architecture , 简称为 ISA ) 总线、 夕卜部设备互连 ( Peripheral Component Interconnect , 简称为 PCI ) 总线或扩展工业标准体系结构 ( Extended Industry Standard Architecture , 简称为 EISA ) 总线等。 该总线 2304可以 分为地址总线、 数据总线、 控制总线等。 为便于表示, 图 40中仅用一条 粗线表示, 但并不表示仅有一根总线或一种类型的总线。 其中:
存储器 2302用于存储程序代码, 该程序代码包括操作指令。 存储器 2302 可能包含高速 RAM 存储器, 也可能还包括非易失性存储器 ( non-volatile memory ), 例如至少一个磁盘存 4渚器。
处理器 2301可能是一个中央处理器 ( Central Processing Unit, 简称 为 CPU ), 或者是特定集成电路 ( Application Specific Integrated Circuit, 简称为 ASIC ) , 或者是被配置成实施本发明实施例的一个或多个集成电 路。
通信接口 2303 , 主要用于实现本实施例中的装置之间的通信。
处理器 2301 , 还用于调用存储器 2302中的程序代码, 用以执行以下 操作:
AP接收 STA发送的信道信息。
发送信道信息至主 AP , 以便于主 AP根据信道信息和预编码准则计 算得到预编码矩阵并通过指示信息发送至 AP。
其中, 指示信息中携带预编码矩阵和所有的 AP对应的流指示; 流指 示用于指示各个 AP使用预编码矩阵的部分和对应的流数。
接收主 A P发送的预编码矩阵。 根据预编码矩阵获取子预编码矩阵。
根据子预编码矩阵对输入数据进行编码。
进一步, 处理器 2301 , 还用于根据获取到的流指示和预编码矩阵计 算得到子预编码矩阵。 其中, 流指示中携带了子预编码矩阵的子矩阵。 本发明的实施例提供的 AP , 在同步、 数据等信息共享、 信道信息的 获得和数据发送方面在协作传输的应用中,通过提供将协作传输方案应用 到实际网络中的同步、数据等信息的共享、信道信息的获得和数据方法的 技术方案, 降低了开销、 提高了工作效率。 同时, 还可以扩展应用场景。
本发明的实施例提供一种主 AP24 , 应用于协作传输中, 参照图 41 所示, 包括: 至少一个处理器 2401、 存储器 2402、 通信接口 2403和总线 2404 ,至少一个处理器 2401、存储器 2402和通信接口 2403通过总线 2404 连接并完成相互间的通信, 存储器 2401用于存储程序代码, 其中:
该总线 2404 可以是工业标准体系 结构 ( Industry Standard Architecture , 简称为 ISA ) 总线、 夕卜部设备互连 ( Peripheral Component Interconnect , 简称为 PCI ) 总线或扩展工业标准体系结构 ( Extended Industry Standard Architecture , 简称为 EISA ) 总线等。 该总线 2404可以 分为地址总线、 数据总线、 控制总线等。 为便于表示, 图 41 中仅用一条 粗线表示, 但并不表示仅有一根总线或一种类型的总线。 其中: 存储器 2402用于存储程序代码, 该程序代码包括操作指令。 存储器 2402 可能包含高速 RAM 存储器, 也可能还包括非易失性存储器 ( non-volatile memory ), 例如至少一个磁盘存 4渚器。 处理器 2401可能是一个中央处理器 ( Central Processing Unit, 简称 为 CPU ), 或者是特定集成电路 ( Application Specific Integrated Circuit, 简称为 ASIC ) , 或者是被配置成实施本发明实施例的一个或多个集成电 路。 通信接口 2403 , 主要用于实现本实施例中的装置之间的通信。
处理器 2401 , 还用于调用存储器 2402中的程序代码, 用以执行以下 操作:
发送数据至站点 STA。 其中, 数据可以指示参与协作传输的所有的 AP和 STA。 接收 STA在收到数据后发送的确认 ACK帧,以便于参与协作传输的 任一 AP确定自己的数据发送时间, 避免冲突的发生。 其中, ACK帧中携带参与协作传输的所有的 AP和 STA。 进一步的, 处理器 2801还用于执行以下步骤: 获取任一 STA发送的传输成功的响应块确认 BA。 本发明的实施例提供的主 AP , 在同步、 数据等信息共享、 信道信息 的获得和数据发送方面在协作传输的应用中,通过提供将协作传输方案应 用到实际网络中的同步、数据等信息的共享、信道信息的获得和数据方法 的技术方案, 降低了开销、提高了工作效率。 同时,还可以扩展应用场景。 所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 仅 以上述各功能模块的划分进行举例说明, 实际应用中, 可以根据需要而将 上述功能分配由不同的功能模块完成,即将装置的内部结构划分成不同的 功能模块, 以完成以上描述的全部或者部分功能。 上述描述的系统, 装置 和单元的具体工作过程, 可以参考前述方法实施例中的对应过程, 在此不 再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统, 装 置和方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅 仅是示意性的,例如,所述模块或单元的划分,仅仅为一种逻辑功能划分, 实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可 以集成到另一个系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示 或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装 置或单元的间接耦合或通信连接, 可以是电性, 机械或其它的形式。 所述作为分离部件说明的单元可以是或者也可以不是物理上分开 的, 作为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一 个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其 中的部分或者全部单元来实现本实施例方案的目的。 另外, 在本申请各个实施例中的各功能单元可以集成在一个处理单 元中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成 在一个单元中。 上述集成的单元既可以釆用硬件的形式实现, 也可以釆用 软件功能单元的形式实现。 所述集成的单元如果以软件功能单元的形式实现并作为独立的产品 销售或使用时, 可以存储在一个计算机可读取存储介质中。基于这样的理 解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技 术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品 存储在一个存储介质中, 包括若干指令用以使得一台计算机设备(可以是 个人计算机, 服务器, 或者网络设备等)或处理器(processor )执行本申 请各个实施例所述方法的全部或部分步骤。 本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分 步骤可以通过程序指令相关的硬件来完成,前述的程序可以存储于一计算 机可读取存储介质中,该程序在执行时,执行包括上述方法实施例的步骤; 而前述的存储介质包括: U盘、移动硬盘、只读存储器( Read-Only Memory , 简称 ROM )、 随机存取存储器 ( Random Access Memory , 简称 RAM )、 磁碟或者光盘等各种可以存储程序代码的介质。 以上所述, 以上实施例仅用以说明本申请的技术方案, 而非对其限 制; 尽管参照前述实施例对本申请进行了详细的说明, 本领域的普通技术 人员应当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相 应技术方案的本质脱离本申请各实施例技术方案的精神和范围。 因此, 本 发明的保护范围应以所述权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种传输方法, 其特征在于, 应用于协作传输中, 所述方法包括: 接入点 AP获取参数值; 其中, 所述参数值为所述 AP的晶振频率与 参考 AP的晶振频率的频率差值或者所述 AP相对于参考 AP的时延差值; 当所述 AP与所述参考 AP同时发送数据时,所述 AP根据所述参数值 补偿相位差异或者时间差值。
2、 根据权利要求 1所述的方法, 其特征在于, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值,所述接入点 AP获取参数值, 包括:
接收主 AP发送的参考 AP的晶振频率; 其中, 所述主 AP为任一具有 控制功能的 AP;
根据所述参考 AP的晶振频率计算所述 AP的晶振频率与所述参考 AP 的晶振频率的频率差值。
3、 根据权利要求 1所述的方法, 其特征在于, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值,所述接入点 AP获取参数值, 包括:
发送所述 AP 的晶振频率至所述主 AP, 以便于所述主 AP 选择参考 AP的晶振频率并根据所述参考 AP的晶振频率和所述 AP的晶振频率计算 所述 AP的晶振频率与参考 AP的晶振频率的频率差值;
接收所述主 AP发送的所述 AP的晶振频率与参考 AP的晶振频率的频 率差值。
4、 根据权利要求 1所述的方法, 其特征在于, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值,所述接入点 AP获取参数值, 包括:
至少重复两次发送第一信道测量的符号至站点 STA, 以便于所述 STA 根据所述第一信道测量的符号两次计算与所述 AP 的第一信道矩阵, 并根 据所述第一信道矩阵和得到的第二信道矩阵计算所述 AP 的晶振频率与所 述参考 AP 的晶振频率的频率差值; 其中, 所述第一信道矩阵和所述第二 信道矩阵的信道参数矩阵均不变, 所述第二信道矩阵是所述 STA根据所述 参考 AP发送的第二信道测量的符号计算得到的与所述参考 AP 的信道矩 阵;
接收站点 STA发送的所述 AP的晶振频率与所述参考 AP的晶振频率 的频率差值。
5、 根据权利要求 1所述的方法, 其特征在于, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值,所述接入点 AP获取参数值, 包括:
至少重复两次发送第一信道测量的符号至站点 STA, 以便于所述 STA 和所述参考 AP根据所述第一信道测量的符号两次计算与所述 AP的第一信 道矩阵并根据所述第一信道矩阵和第二信道矩阵计算所述 AP 的晶振频率 与参考 AP 的晶振频率的频率差值; 其中, 所述第一信道矩阵和所述第二 信道矩阵的信道参数矩阵不变, 所述第二信道矩阵为所述 STA根据所述参 考 AP发送的第二信号测量的符号计算得到的与所述参考 AP的信道矩阵; 接收所述参考 A P发送的所述 A P的晶振频率与参考 A P的晶振频率的 频率差值。
6、 根据权利要求 1所述的方法, 其特征在于, 所述参数值为所述 AP 相对于参考 AP的时延差值, 所述接入点 AP获取参数值, 包括:
接收 STA发送的信号帧; 其中, 所述信号帧中携带参考时间; 根据所述参考时间计算得到所述 STA的发送时延与传播时延的和值; 将获得的所述 STA 的发送时延与传播时延的和值与参考 AP 获得的 STA的发送时延与传播时延的和值相减, 获得相对于参考 AP的传播时延 差值和发送的处理时延差值; 其中, 所述参考 AP获得的 STA的发送时延 与传播时延的和值是所述参考 AP根据所述参考时间计算得到并发送至 AP 的。
7、 一种传输方法, 其特征在于, 应用于协作传输中, 所述方法包括: 站点 STA至少重复两次接收接入点 AP发送的第一信道测量的符号; 至少重复两次接收参考 AP发送的第二信道测量的符号;
根据所述第一信道测量的符号计算与所述 A P的第一信道矩阵; 根据所述第二信道测量符号计算与所述参考 AP的第二信道矩阵; 根据所述第一信道矩阵和所述第二信道矩阵计算获得所述 AP的晶振 频率与所述参考 AP的晶振频率的频率差值。
8、 根据权利要求 7 所述的方法, 其特征在于, 所述根据所述第一信 道矩阵和所述第二信道矩阵计算获得所述 AP的晶振频率与所述参考 AP的 晶振频率的频率差值, 包括:
根据所述第一信道矩阵获得第一差值; 其中, 所述第一差值为本地晶 振频率与所述 AP晶振频率的频率差值;
根据所述第二信道矩阵获得第二差值; 其中, 所述第二差值为本地晶 振频率与所述参考 AP晶振频率的频率差值;
根据所述第一差值和所述第二差值计算得到所述 AP的晶振频率与所 述参考 AP的晶振频率的频率差值;
发送所述 AP的晶振频率与参考 AP的晶振频率的频率差值至所述 AP。
9、 根据权利要求 7 所述的方法, 其特征在于, 所述根据所述第一信 道矩阵和所述第二信道矩阵计算获得所述 AP的晶振频率与所述参考 AP的 晶振频率的频率差值, 包括:
根据所述第一信道矩阵获得第一差值; 其中, 所述第一差值为本地晶 振频率与所述 AP晶振频率的频率差值;
根据所述第二信道矩阵获得第二差值; 其中, 所述第二差值为本地晶 振频率与所述参考 AP晶振频率的频率差值;
发送所述第一差值和所述第二差值至所述参考 AP , 以便于所述参考 AP根据所述第一差值和所述第二差值计算得到所述 AP的晶振频率与所述 参考 AP的晶振频率的频率差值, 并将所述 AP的晶振频率与所述参考 AP 的晶振频率的频率差值发送至所述 AP。
10、 一种传输方法, 其特征在于, 应用于协作传输中, 所述方法包括: 接入点 AP判断获取的 STA发送的数据的数据类型;
若所述数据的数据类型为联合发送, 则按照指示信息将所述数据存入 緩存器中;
当主 AP发送数据时, 所述 AP读取所述緩存器并发送所述緩存器中 的数据; 其中, 所述主 AP为任一具有控制功能的 AP。
11、 根据权利要求 10所述的方法, 其特征在于, 所述緩存器为联合发 送的接入类型 AC— JT緩存器, 所述 AP判断数据的数据类型包括:
根据所述数据自身携带的联合发送的指示 JT— IDX判断数据的数据类 型。
12、 根据权利要求 11所述的方法, 其特征在于, 所述指示信息为所述 数据自身携带的数据发送顺序, 所述若所述数据的数据类型为联合发送, 则按照指示信息将所述数据存入緩存器中, 包括:
若所述数据的数据类型为联合发送, 则按照所述数据自身携带的数据 发送顺序将所述数据存入所述 AC— JT緩存器中。
13、 根据权利要求 11所述的方法, 其特征在于, 所述指示信息为指示 命令中指示的数据发送顺序, 所述若所述数据的数据类型为联合发送, 则 按照指示信息将所述数据存入緩存器中, 包括:
若所述数据的数据类型为联合发送,则将所述数据归类为 AC— JT接入 类型;
根据所述指示命令中指示的数据发送顺序, 将所述数据存入所述 AC— JT緩存器中; 其中, 所述指示命令携带在所述数据中。
14、 根据权利要求 12或 13所述的方法, 其特征在于, 所述方法还包 括:
若所述数据的数据类型不是联合发送, 则根据所述数据自身携带的业 务分类信息将所述数据存入所述数据对应的接入类型队列。
15、 根据权利要求 10 所述的方法, 其特征在于, 所述緩存器为联合 发送緩存器 JT Buffer, 所述 AP判断数据的数据类型包括:
根据获取的所述 STA发送的需要联合发送的数据指示,从本地接入类 型緩存器中选择需要联合发送的数据; 其中, 所述本地接入类型包括: 语 音接入类型 AC— VO、 视频接入类型 AC— VI、 最大努力的接入类型 AC— BE 或背景的接入类型 AC— BK;
确认所述数据的数据类型为联合发送。
16、 根据权利要求 15 所述的方法, 其特征在于, 所述指示信息为预 存在所述 JT Buffer緩存器的指令命令指示的数据发送顺序, 所述若所述数 据的数据类型为联合发送, 则按照指示信息将所述数据存入緩存器中, 包 括:
若所述数据的数据类型为联合发送, 则根据所述预存在所述 JT Buffer 緩存器的指令命令指示的数据发送顺序将所述数据存入所述 JT Buffer緩存 器中; 其中, 所述指令命令是所述 AP存储在所述 JT Buffer緩存器中的。
17、 一种传输方法, 其特征在于, 应用于协作传输中, 所述方法包括: 接入点 AP接收站点 STA发送的信道信息;
发送所述信道信息至主 AP, 以便于所述主 AP根据所述信道信息和预 编码准则计算得到预编码矩阵并通过指示信息发送至所述 AP; 其中, 所述 指示信息中携带所述预编码矩阵和所述 AP对应的流指示; 所述流指示用 于指示各个所述 AP使用所述预编码矩阵的部分和对应的流数;
接收所述主 AP发送的预编码矩阵;
根据所述预编码矩阵获取子预编码矩阵;
根据所述子预编码矩阵对输入数据进行编码。
18、 根据权利要求 17 所述的方法, 其特征在于, 所述根据所述预编 码矩阵获取子预编码矩阵包括;
根据获取到的所述流指示和所述预编码矩阵计算得到所述子预编码 矩阵; 其中, 所述流指示中携带了所述子预编码矩阵的子矩阵。
19、 一种传输方法, 其特征在于, 应用于协作传输中, 所述方法包括: 主 AP发送数据至站点 STA; 其中, 所述数据可以指示参与协作传输 的所有的 AP和 STA;
接收所述 STA在收到所述数据后发送的确认 ACK帧, 以便于所述参 与协作传输的任一 AP确定自己的数据发送时间, 避免冲突的发生; 其中, 所述 ACK帧中携带参与协作传输的所有的 AP和 STA。
20、 根据权利要求 19所述的方法, 其特征在于, 所述方法还包括: 获取所述任一 STA发送的传输成功的响应块确认 BA。
21、 一种 AP, 其特征在于, 应用于协作传输中, 包括:
获取单元, 用于获取参数值; 其中, 所述参数值为所述 AP的晶振频 率与参考 AP的晶振频率的频率差值或者所述 AP相对于参考 AP的时延差 值;
处理单元, 用于当所述 AP与所述参考 AP 同时发送数据时, 根据所 述参数值补偿相位差异或者时间差值。
22、 根据权利要求 21所述的 AP , 其特征在于, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值, 所述获取单元包括:
接收模块, 用于接收主 AP发送的参考 AP的晶振频率; 其中, 所述 主 AP为任一具有控制功能的 AP;
计算模块, 用于根据所述参考 AP的晶振频率计算所述 AP的晶振频 率与参考 AP的晶振频率的频率差值。
23、 根据权利要求 21所述的 AP , 其特征在于, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值, 所述获取单元还包括: 发送模块, 用于发送所述 AP的晶振频率至所述主 AP , 以便于所述主 AP选择参考 AP的晶振频率并根据所述参考 AP的晶振频率和所述 AP的 晶振频率计算所述 AP的晶振频率与参考 AP的参考晶振频率的频率差值; 所述接收模块, 还用于接收所述主 AP发送的所述 AP的晶振频率与 参考 AP的晶振频率的频率差值。
24、 根据权利要求 21所述的 AP , 其特征在于, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值,
所述发送模块, 还用于至少重复两次发送第一信道测量的符号至站点 STA, 以便于所述 STA根据所述第一信道测量的符号两次计算与所述 AP 第一的信道矩阵, 并根据所述第一信道矩阵和得到的第二信道矩阵计算所 述 AP的晶振频率与所述参考 AP的晶振频率的频率差值; 其中, 所述第一 信道矩阵和所述第二信道矩阵的信道参数矩阵均不变, 所述第二信道矩阵 是所述 STA根据所述参考 AP发送的第二信道测量的符号计算得到的与所 述参考 AP的信道矩阵;
所述接收模块, 还用于接收站点 STA发送的所述 AP的晶振频率与所 述参考 AP的晶振频率的频率差值。
25、 根据权利要求 21所述的 AP , 其特征在于, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值, 所述发送模块, 还用于至少重复两次发送第一信道测量的符号至站点
STA , 以便于所述 STA和所述参考 AP根据所述第一信道测量的符号两次 计算与所述 AP 的第一信道矩阵并根据所述第一信道矩阵和第二信道矩阵 计算所述 AP的晶振频率与参考 AP的晶振频率的频率差值; 其中, 所述第 一信道矩阵和所述第二信道矩阵的信道参数矩阵不变, 所述第二信道矩阵 为所述 STA根据所述参考 AP发送的第二信道测量的符号计算得到的与所 述参考 AP的信道矩阵;
所述接收模块, 还用于接收所述参考 AP发送的所述 AP的晶振频率 与参考 AP的晶振频率的频率差值。
26、 根据权利要求 21所述的 AP , 其特征在于, 所述参数值为所述 AP 相对于参考 AP的时延差值, 所述获取单元还包括:
所述接收模块, 还用于接收 STA发送的信号帧; 其中, 所述信号帧中 携带参考时间;
所述计算模块,还用于根据所述参考时间计算得到所述 STA的发送时 延与传播时延的和值;
获取模块,用于将获得的所述 STA的发送时延与传播时延的和值与参 考 AP获得的 STA的发送时延与传播时延的和值相减,获得相对于参考 AP 的传播时延差值和发送的处理时延差值; 其中, 所述参考 AP获得的 STA 的发送时延与传播时延的和值是所述参考 AP根据所述参考时间计算得到 并发送至 AP的。
27、 一种 STA , 其特征在于, 应用于协作传输中, 包括:
接收单元, 用于至少重复两次接收接入点 AP发送的第一信道测量的 符号;
所述接收单元, 还用于至少重复两次接收参考 AP发送的第二信道测 量的符号;
计算单元, 用于根据所述第一信道测量的符号计算与所述 AP的第一 信道矩阵;
所述计算单元, 还用于根据所述第二信道测量的符号计算与所述参考 AP的第二信道矩阵; 获取单元, 用于根据所述第一信道矩阵和所述第二信道矩阵计算获得 所述 AP的晶振频率与所述参考 AP的晶振频率的频率差值。
28、 根据权利要求 27所述的 STA, 其特征在于, 所述获取单元包括: 获取模块, 用于根据所述第一信道矩阵获得第一差值; 其中, 所述第 一差值为本地晶振频率与所述 A P晶振频率的频率差值;
所述获取模块, 还用于根据所述第二信道矩阵获得; 其中, 所述第二 差值为本地晶振频率与所述参考 AP晶振频率的频率差值;
计算模块, 用于根据所述第一差值和所述第二差值计算得到所述 AP 的晶振频率与所述参考 AP的晶振频率的频率差值;
发送单元, 用于发送所述 AP的晶振频率与参考 AP的晶振频率的频 率差值至所述 AP。
29、 根据权利要求 27 所述的 STA, 其特征在于, 所述获取单元还包 括:
所述获取模块, 还用于根据所述第一信道矩阵获得第一差值; 其中, 所述第一差值为本地晶振频率与所述 A P晶振频率的频率差值;
所述获取模块, 还用于根据所述第二信道矩阵获得第二差值; 其中, 所述为本地晶振频率与所述参考 AP晶振频率的频率差值;
发送模块, 用于发送所述第一差值和所述第二差值至所述参考 AP , 以便于所述参考 AP根据所述第一差值和所述第二差值计算得到所述 AP的 晶振频率与所述参考 AP的晶振频率的频率差值,并将所述 AP的晶振频率 与所述参考 AP的晶振频率的频率差值发送至所述 AP。
30、 一种 AP, 其特征在于, 应用于协作传输中, 包括:
判断单元, 用于判断获取的 STA发送的数据的数据类型;
处理单元, 用于若所述数据的数据类型为联合发送, 则按照指示信息 将所述数据存入緩存器中;
当主 AP发送数据时, 所述 AP读取所述緩存器并发送所述緩存器中 的数据; 其中, 所述主 AP为任一具有控制功能的 AP。
31、 根据权利要求 30所述的 AP, 其特征在于, 所述緩存器为联合发 送的接入类型 AC— JT緩存器, 所述判断单元具体用于: 根据所述数据自身携带的联合发送的指示 JT— IDX判断数据的数据类 型。
32、 根据权利要求 31所述的 AP, 其特征在于, 所述指示信息为所述 数据自身携带的数据发送顺序, 所述处理单元包括:
第一处理模块, 用于若所述数据的数据类型为联合发送, 则按照所述 数据自身携带的数据发送顺序将所述数据存入所述 AC— JT緩存器中。
33、 根据权利要求 31所述的 AP, 其特征在于, 所述指示信息为指示 命令中指示的数据发送顺序, 所述处理单元还包括:
第二处理模块, 用于若所述数据的数据类型为联合发送, 则将所述数 据归类为 AC— JT接入类型;
所述第二处理模块, 还用于根据所述指示命令中指示的数据发送顺 序, 将所述数据存入所述 AC— JT緩存器中; 其中, 所述指示命令携带在所 述数据中。
34、根据权利要求 32或 33所述的 AP,其特征在于, 所述 AP还包括: 存储单元, 用于若所述数据的数据类型不是联合发送, 则根据所述数 据自身携带的业务分类信息将所述数据存入所述数据对应的接入型队列。
35、 根据权利要求 30所述的 AP, 其特征在于, 所述緩存器为联合发 送緩存器 JT Buffer, 所述判断单元包括:
选择模块, 用于根据获取的所述 STA 发送的需要联合发送的数据指 示, 从本地接入类型緩存器中选择需要联合发送的数据; 其中, 所述本地 接入类型包括: 语音接入类型 AC— VO、 视频接入类型 AC— VI、 最大努力 的接入类型 AC— BE或背景的接入类型 AC— BK;
确认模块, 用于确认所述数据的数据类型为联合发送。
36、 根据权利要求 35所述的 AP, 其特征在于, 所述指示信息为预存 在所述 JT Buffer緩存器的指令命令指示的数据发送顺序, 所述处理单元还 包括:
第三处理模块, 用于若所述数据的数据类型为联合发送, 则根据所述 预存在所述 JT Buffer緩存器的指令命令指示的数据发送顺序将所述数据存 入所述 JT Buffer緩存器中; 其中, 所述指令命令是所述 AP存储在所述 JT Buffer緩存器中的。
37、 一种 AP, 其特征在于, 应用于协作传输中, 包括:
接收单元, 用于接收站点 STA发送的信道信息;
发送单元, 用于发送所述信道信息至所述主 AP , 以便于所述主 AP根 据所述信道信息和预编码准则计算得到预编码矩阵并通过指示信息发送至 所述 AP; 其中, 所述指示信息中携带所述预编码矩阵和所有的所述 AP对 应的流指示; 所述流指示用于指示各个所述 AP使用所述预编码矩阵的部 分和对应的流数;
所述接收单元, 还用于接收所述主 AP发送的预编码矩阵;
获取单元, 用于根据所述预编码矩阵获取子预编码矩阵;
编码单元, 用于根据所述子预编码矩阵对输入数据进行编码。
38、 根据权利要求 37所述的 AP, 其特征在于, 所述获取单元具体用 于:
根据获取到的所述流指示和所述预编码矩阵计算得到所述子预编码 矩阵; 其中, 所述流指示中携带了所述子预编码矩阵的子矩阵。
39、 一种主 AP , 其特征在于, 应用于协作传输中, 包括:
发送单元, 用于发送数据至站点 STA; 其中, 所述数据可以指示参与 协作传输的所有的 AP和 STA;
接收单元,用于接收所述 STA在收到所述数据后发送的确认 ACK帧, 以便于所述参与协作传输的任一 AP确定自己的数据发送时间, 避免冲突 的发生; 其中, 所述 ACK帧中携带参与协作传输的所有的 AP和 STA。
40、 根据权利要求 39所述的主 AP, 其特征在于, 所述主 AP还包括: 获取单元,用于获取所述任一 S T A发送的传输成功的响应块确认 B A。
41、 一种 AP, 其特征在于, 应用于协作传输中, 所述 AP包括: 至少一个处理器、 存储器、 通信接口和总线, 所述至少一个处理器、 存储 器和通信接口通过总线连接并完成相互间的通信, 所述存储器用于存储程 序代码, 其中:
所述处理器, 用于调用存储器中的程序代码, 用以执行以下操作: 获取参数值; 其中, 所述参数值为所述 AP的晶振频率与参考 AP的 晶振频率的频率差值或者所述 AP相对于参考 AP的时延差值; 当所述 AP与所述参考 AP 同时发送数据时, 根据所述参数值补偿相 位差异或者时间差值。
42、 根据权利要求 41所述的 AP , 其特征在于, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值, 所述处理器具体用于: 接收主 AP发送的参考 AP的晶振频率; 其中, 所述主 AP为任一具有 控制功能的 AP;
根据所述参考 AP的晶振频率计算所述 AP的晶振频率与所述参考 AP 的晶振频率的频率差值。
43、 根据权利要求 41所述的 AP , 其特征在于, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值, 所述处理器具体用于: 发送所述 AP 的晶振频率至所述主 AP, 以便于所述主 AP 选择参考 AP的晶振频率并根据所述参考 AP的晶振频率和所述 AP的晶振频率计算 所述 AP的晶振频率与参考 AP的晶振频率的频率差值;
接收所述主 AP发送的所述 AP的晶振频率与参考 AP的晶振频率的频 率差值。
44、 根据权利要求 41所述的 AP , 其特征在于, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值, 所述处理器具体用于: 至少重复两次发送第一信道测量的符号至站点 STA, 以便于所述 STA 根据所述第一信道测量的符号两次计算与所述 AP 的第一信道矩阵, 并根 据所述第一信道矩阵和得到的第二信道矩阵计算所述 AP 的晶振频率与所 述参考 AP 的晶振频率的频率差值; 其中, 所述第一信道矩阵和所述第二 信道矩阵的信道参数矩阵均不变, 所述第二信道矩阵是所述 STA根据所述 参考 AP发送的第二信道测量的符号计算得到的与所述参考 AP 的信道矩 阵;
接收站点 STA发送的所述 AP的晶振频率与所述参考 AP的晶振频率 的频率差值。
45、 根据权利要求 41所述的 AP , 其特征在于, 所述参数值为所述 AP 的晶振频率与参考 AP的晶振频率的频率差值, 所述处理器具体用于: 至少重复两次发送第一信道测量的符号至站点 STA, 以便于所述 STA 和所述参考 AP根据所述第一信道测量的符号两次计算与所述 AP的第一信 道矩阵并根据所述第一信道矩阵和第二信道矩阵计算所述 AP 的晶振频率 与参考 AP 的晶振频率的频率差值; 其中, 所述第一信道矩阵和所述第二 信道矩阵的信道参数矩阵不变, 所述第二信道矩阵为所述 STA根据所述参 考 AP发送的第二信号测量的符号计算得到的与所述参考 AP的信道矩阵; 接收所述参考 A P发送的所述 A P的晶振频率与参考 A P的晶振频率的 频率差值。
46、 根据权利要求 41所述的 AP , 其特征在于, 所述参数值为所述 AP 相对于参考 AP的时延差值, 所述处理器具体用于:
接收 STA发送的信号帧; 其中, 所述信号帧中携带参考时间; 根据所述参考时间计算得到所述 STA的发送时延与传播时延的和值; 将获得的所述 STA 的发送时延与传播时延的和值与参考 AP 获得的 STA的发送时延与传播时延的和值相减, 获得相对于参考 AP的传播时延 差值和发送的处理时延差值; 其中, 所述参考 AP获得的 STA的发送时延 与传播时延的和值是所述参考 AP根据所述参考时间计算得到并发送至 AP 的。
47、 一种 STA, 其特征在于, 应用于协作传输中, 所述 STA包括: 至 少一个处理器、 存储器、 通信接口和总线, 所述至少一个处理器、 存储器 和通信接口通过总线连接并完成相互间的通信, 所述存储器用于存储程序 代码, 其中:
所述处理器, 用于调用存储器中的程序代码, 用以执行以下操作: 至少重复两次接收 A P发送的第一信道测量的符号;
至少重复两次接收参考 AP发送的第二信道测量的符号;
根据所述第一信道测量的符号计算与所述 A P的第一信道矩阵; 根据所述第二信道测量符号计算与所述参考 AP的第二信道矩阵; 根据所述第一信道矩阵和所述第二信道矩阵计算获得所述 AP的晶振 频率与所述参考 AP的晶振频率的频率差值。
48、 根据权利要求 47 所述的 STA, 其特征在于, 所述处理器具体用 于:
根据所述第一信道矩阵获得第一差值; 其中, 所述第一差值为本地晶 振频率与所述 AP晶振频率的频率差值;
根据所述第二信道矩阵获得第二差值; 其中, 所述第二差值为本地晶 振频率与所述参考 AP晶振频率的频率差值;
根据所述第一差值和所述第二差值计算得到所述 AP的晶振频率与所 述参考 AP的晶振频率的频率差值;
发送所述 AP的晶振频率与参考 AP的晶振频率的频率差值至所述 AP。
49、 根据权利要求 47 所述的 STA, 其特征在于, 所述处理器具体用 于:
根据所述第一信道矩阵获得第一差值; 其中, 所述第一差值为本地晶 振频率与所述 AP晶振频率的频率差值;
根据所述第二信道矩阵获得第二差值; 其中, 所述第二差值为本地晶 振频率与所述参考 AP晶振频率的频率差值;
发送所述第一差值和所述第二差值至所述参考 AP , 以便于所述参考 AP根据所述第一差值和所述第二差值计算得到所述 AP的晶振频率与所述 参考 AP的晶振频率的频率差值, 并将所述 AP的晶振频率与所述参考 AP 的晶振频率的频率差值发送至所述 AP。
50、 一种 AP , 其特征在于, 应用于协作传输中, 所述 AP包括: 至少 一个处理器、 存储器、 通信接口和总线, 所述至少一个处理器、 存储器和 通信接口通过总线连接并完成相互间的通信, 所述存储器用于存储程序代 码, 其中:
所述处理器, 用于调用存储器中的程序代码, 用以执行以下操作: 判断获取的 STA发送的数据的数据类型;
若所述数据的数据类型为联合发送, 则按照指示信息将所述数据存入 緩存器中;
当主 AP发送数据时, 所述 AP读取所述緩存器并发送所述緩存器中 的数据; 其中, 所述主 AP为任一具有控制功能的 AP。
51、 根据权利要求 50所述的 AP, 其特征在于, 所述緩存器为联合发 送的接入类型 AC— JT緩存器, 所述处理器具体用于:
根据所述数据自身携带的联合发送的指示 JT— IDX判断数据的数据类 型。
52、 根据权利要求 51所述的 AP, 其特征在于, 所述指示信息为所述 数据自身携带的数据发送顺序, 所述处理器具体用于:
若所述数据的数据类型为联合发送, 则按照所述数据自身携带的数据 发送顺序将所述数据存入所述 AC— JT緩存器中。
53、 根据权利要求 51所述的 AP, 其特征在于, 所述指示信息为指示 命令中指示的数据发送顺序, 所述处理器具体用于:
若所述数据的数据类型为联合发送,则将所述数据归类为 AC— JT接入 类型;
根据所述指示命令中指示的数据发送顺序, 将所述数据存入所述 AC— JT緩存器中; 其中, 所述指示命令携带在所述数据中。
54、 根据权利要求 52或 53所述的 AP , 其特征在于,
所述处理器, 还用于若所述数据的数据类型不是联合发送, 则根据所 述数据自身携带的业务分类信息将所述数据存入所述数据对应的接入型队 列。
55、 根据权利要求 50所述的 AP, 其特征在于, 所述緩存器为联合发 送緩存器 JT Buffer, 所述处理器具体用于:
根据获取的所述 STA发送的需要联合发送的数据指示,从本地接入类 型緩存器中选择需要联合发送的数据; 其中, 所述本地接入类型包括: 语 音接入类型 AC— VO、 视频接入类型 AC— VI、 最大努力的接入类型 AC— BE 或背景的接入类型 AC— BK;
确认所述数据的数据类型为联合发送。
56、 根据权利要求 55所述的 AP, 其特征在于, 所述指示信息为预存 在所述 JT Buffer緩存器的指令命令指示的数据发送顺序, 所述处理器具体 用于:
若所述数据的数据类型为联合发送, 则根据所述预存在所述 JT Buffer 緩存器的指令命令指示的数据发送顺序将所述数据存入所述 JT Buffer緩存 器中; 其中, 所述指示命令是所述 AP存储在所述 JT Buffer緩存器中的。
57、 一种 AP , 其特征在于, 应用于协作传输中, 所述 AP包括: 至少 一个处理器、 存储器、 通信接口和总线, 所述至少一个处理器、 存储器和 通信接口通过总线连接并完成相互间的通信, 所述存储器用于存储程序代 码, 其中:
所述处理器, 用于调用存储器中的程序代码, 用以执行以下操作: 接收站点 STA发送的信道信息;
发送所述信道信息至主 AP, 以便于所述主 AP根据所述信道信息和预 编码准则计算得到预编码矩阵并通过指示信息发送至所述 AP; 其中, 所述 指示信息中携带所述预编码矩阵和所有的所述 AP对应的流指示; 所述流 指示用于指示各个所述 AP使用所述预编码矩阵的部分和对应的流数; 接收所述主 AP发送的预编码矩阵;
根据所述预编码矩阵获取子预编码矩阵;
根据所述子预编码矩阵对输入数据进行编码。
58、 根据权利要求 57所述的 AP , 其特征在于, 所述处理器具体用于: 根据获取到的所述流指示和所述预编码矩阵计算得到所述子预编码 矩阵; 其中, 所述流指示中携带了所述子预编码矩阵的子矩阵。
59、 一种主 AP , 其特征在于, 应用于协作传输中, 所述主 AP包括: 至少一个处理器、 存储器、 通信接口和总线, 所述至少一个处理器、 存储 器和通信接口通过总线连接并完成相互间的通信, 所述存储器用于存储程 序代码, 其中:
所述处理器, 用于调用存储器中的程序代码, 用以执行以下操作: 发送数据至站点 STA; 其中, 所述数据可以指示参与协作传输的所有 的 AP和 STA;
接收所述 STA在收到所述数据后发送的确认 ACK帧, 以便于所述参 与协作传输的任一 AP确定自己的数据发送时间, 避免冲突的发生; 其中, 所述 ACK帧中携带参与协作传输的所有的 AP和 STA。
60、 根据权利要求 59所述的主 AP, 其特征在于, 所述处理器还用于: 获取所述任一 STA发送的传输成功的响应块确认 BA。
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