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WO2018014247A1 - Dispositif et procédé d'acquisition d'informations système et système de communication - Google Patents

Dispositif et procédé d'acquisition d'informations système et système de communication Download PDF

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Publication number
WO2018014247A1
WO2018014247A1 PCT/CN2016/090632 CN2016090632W WO2018014247A1 WO 2018014247 A1 WO2018014247 A1 WO 2018014247A1 CN 2016090632 W CN2016090632 W CN 2016090632W WO 2018014247 A1 WO2018014247 A1 WO 2018014247A1
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WIPO (PCT)
Prior art keywords
system information
random access
frequency domain
user equipment
request
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Ceased
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PCT/CN2016/090632
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English (en)
Chinese (zh)
Inventor
史玉龙
吴联海
贾美艺
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Fujitsu Ltd
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Fujitsu Ltd
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Priority to PCT/CN2016/090632 priority Critical patent/WO2018014247A1/fr
Publication of WO2018014247A1 publication Critical patent/WO2018014247A1/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an apparatus, method, and communication system for acquiring system information (SI).
  • SI system information
  • the 3rd Generation Partnership Project (3GPP) is studying issues related to next-generation wireless communication systems. Among them, network side energy saving is a new demand for next generation wireless communication systems.
  • LTE Long Term Evolution
  • the network side periodically broadcasts all system information to all user equipments (UE, User Equipment) in the cell.
  • UE User Equipment
  • the existing system information mainly includes system information necessary for the UE to camp on the cell, such as a main system information block (MIB), a system information block (SIB, SIB1, SIB2, etc.); It includes non-essential system information (herein referred to as On-demand SI) that some UEs need at a specific time, such as SIB18 and SIB19 that are used for end-to-end communication.
  • the unnecessary system information does not have to be continuously broadcasted periodically, but is provided to a specific UE when the UE needs it.
  • the UE needs some specific On-demand system information
  • the UE sends a request to the network side and indicates the required system information.
  • the network side provides the On-demand system information required by the UE to the UE in a broadcast or unicast manner within a certain time after receiving the UE request.
  • the inventor has found that the current request scheme for the On-demand system information may cause a large delay, and even cause the system information of the network side and the UE side to be out of synchronization; the transmission efficiency of the On-demand system information is low. The energy consumption on the network side cannot be further reduced.
  • Embodiments of the present invention provide a device, a method, and a communication system for acquiring system information.
  • the request delay of the system information can be reduced, and the system information of the network side and the UE side is not synchronized; and the system information is sent.
  • High efficiency can further reduce energy consumption on the network side.
  • a method for obtaining system information including:
  • the user equipment selects a preamble sequence and/or a frequency domain resource corresponding to the system information when one or more system information is needed; wherein the correspondence between the preamble sequence and/or the frequency domain resource and the system information is determine;
  • One or more random access responses sent by the base station are continuously received within the receiving window until the required system information is received.
  • a device for acquiring system information is provided in a user equipment, where the obtaining device includes:
  • a resource selection unit when the user equipment needs one or more system information, select a preamble sequence and/or a frequency domain resource corresponding to the system information; wherein the preamble sequence and/or the frequency domain resource and the The correspondence of system information is predetermined;
  • a request sending unit which simultaneously sends a random access request for requesting the one or more system information to the base station based on the corresponding preamble sequence and/or frequency domain resource;
  • An information receiving unit continuously receives one or more random access responses sent by the base station in a receiving window until all required system information is received.
  • a method for obtaining system information including:
  • a device for acquiring system information includes:
  • a request receiving unit which receives a random access request sent by the user equipment for requesting one or more system information; wherein a correspondence between the preamble sequence and/or the frequency domain resource that sends the random access request and the system information is Determine
  • a response generating unit that adds the corresponding system information to one or more random access responses based on the preamble sequence and/or the frequency domain resource
  • An information sending unit that sends the one or more random access responses to the user equipment.
  • a user equipment configured with the apparatus for acquiring system information as described in the second aspect above.
  • a base station configured with the apparatus for acquiring system information as described in the fourth aspect above.
  • a communication system comprising:
  • a user equipment when the one or more system information is required, selecting a preamble sequence and/or a frequency domain resource corresponding to the system information; wherein the correspondence between the preamble sequence and/or the frequency domain resource and the system information Predetermined; transmitting, according to the corresponding preamble sequence and/or frequency domain resource, a random access request for requesting the one or more system information to the base station; and continuously receiving one of the base station transmissions in the receiving window Or multiple random access responses until the required system information is received;
  • a base station which receives a random access request sent by the user equipment for requesting one or more system information; wherein a correspondence between the preamble sequence and/or the frequency domain resource that sends the random access request and the system information is determined in advance; Adding the corresponding system information to one or more random access responses based on the preamble sequence and/or frequency domain resources; and transmitting the one or more random access responses to the user equipment.
  • the beneficial effects of the embodiments of the present invention are: transmitting a random access request requesting system information according to a preamble sequence and/or a frequency domain resource corresponding to the required system information; and continuously receiving the random access response in the receiving window until The required system information is received. Therefore, it is possible to request multiple system information in one random access procedure, reduce the request delay of the system information, reduce the situation that the system information of the network side and the UE side are not synchronized, and receive multiple system information in one receiving window.
  • the transmission efficiency of system information is high, which can further reduce the energy consumption on the network side.
  • FIG. 1 is a schematic diagram of a method for acquiring system information according to Embodiment 1 of the present invention
  • FIG. 2 is another schematic diagram of a method for acquiring system information according to Embodiment 1 of the present invention.
  • FIG. 3 is another schematic diagram of a method for acquiring system information according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic diagram of a method for acquiring system information according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic diagram of a method for acquiring system information according to Embodiment 3 of the present invention.
  • FIG. 6 is a schematic diagram of a method for acquiring system information according to Embodiment 4 of the present invention.
  • FIG. 7 is a schematic diagram of an apparatus for acquiring system information according to Embodiment 5 of the present invention.
  • FIG. 8 is another schematic diagram of an apparatus for acquiring system information according to Embodiment 5 of the present invention.
  • FIG. 9 is another schematic diagram of an apparatus for acquiring system information according to Embodiment 5 of the present invention.
  • FIG. 10 is a schematic diagram of an apparatus for acquiring system information according to Embodiment 6 of the present invention.
  • FIG. 11 is another schematic diagram of an apparatus for acquiring system information according to Embodiment 6 of the present invention.
  • FIG. 12 is another schematic diagram of an apparatus for acquiring system information according to Embodiment 6 of the present invention.
  • Figure 13 is a schematic diagram of a communication system according to Embodiment 7 of the present invention.
  • FIG. 14 is a schematic diagram of a user equipment according to Embodiment 7 of the present invention.
  • Figure 15 is a diagram showing a base station according to Embodiment 7 of the present invention.
  • a base station may be referred to as an access point, a broadcast transmitter, a Node B, and an evolved Node B (eNB). Etc., and may include some or all of their functions.
  • the term “base station” will be used herein. Each base station provides communication coverage for a particular geographic area.
  • the term “cell” can refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • a mobile station or device may be referred to as a "User Equipment” (UE).
  • UE User Equipment
  • a UE may be fixed or mobile and may also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, and the like.
  • the UE may be a cellular telephone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless telephone, and the like.
  • PDA personal digital assistant
  • the UE may indicate the request for the On-demand system information by sending a special preamble sequence (herein referred to as a preamble) in the random access procedure.
  • a preamble a special preamble sequence
  • the network side provides system information required by the UE in a random access response (RAR) according to the request of the UE.
  • each preamble can only indicate an On-demand system information.
  • the UE needs multiple On-demand system information, after the UE sends the first preamble requesting certain system information, it needs to wait for the next random access opportunity and send a second preamble to request another system information.
  • the network side configures random access opportunities with large time intervals. In this way, the delay of the UE to obtain certain On-demand system information is large, which may cause a large random access delay of the UE, and even cause the system information of the network side and the UE side to be out of synchronization, and generate information for other UEs. interference.
  • the On-demand system information may specifically refer to system information that only needs part of the UE, or system information that the UE needs at a specific time.
  • On-demand system information may also be expressed as non-essential system information, or other system information, and the present invention does not limit the name of such system information.
  • the present invention is not limited to On-demand system information, and the present invention is also applicable to necessary system information.
  • the embodiment of the invention provides a method for acquiring system information, which describes an initial request and an acquisition process of system information from the perspective of the user equipment side.
  • FIG. 1 is a schematic diagram of a method for acquiring system information according to an embodiment of the present invention. As shown in FIG. 1, the method for acquiring system information includes:
  • Step 101 When the user equipment needs one or more system information, select a preamble sequence and/or a frequency domain resource corresponding to the one or more system information, where the preamble sequence and/or the frequency domain resource correspond to the system information.
  • the relationship is predetermined;
  • Step 102 The user equipment simultaneously sends a random access request for requesting the one or more system information to the base station according to the corresponding preamble sequence and/or the frequency domain resource.
  • Step 103 The user equipment continuously receives one or more random access responses sent by the base station in the receiving window until all required system information is received.
  • the base station may be a macro base station (for example, an eNB), and a macro cell (for example, a Macro cell) generated by the macro base station may provide a service for the user equipment.
  • the base station may also be a micro base station, and a micro cell generated by the micro base station (for example, a Pico cell) may provide services for the user equipment.
  • the present invention is not limited thereto, and a specific scenario can be determined according to actual needs.
  • FIG. 1 only schematically shows various steps of the system information request on the user equipment side, and the present invention is not limited thereto; for example, in the case where there are multiple requests in step 102, the transmission of multiple requests may be simultaneously Or in parallel, step 103 can be performed after a certain time after step 102.
  • “simultaneously” herein may mean performing in parallel within a predetermined time (for example, a certain time slot, or one or several time symbols, etc.), and should not be simply understood as being precisely at a certain time. Click to proceed.
  • the network side may configure a special (or special) random access resource (including, for example, a time domain resource, a frequency domain resource, a preamble sequence resource, and the like).
  • a signal for transmitting an On-demand system information hereinafter may be referred to as a random access signal or a preamble signal).
  • the system information can be associated with a preamble sequence.
  • different preamble sequences may correspond to different system information.
  • the preamble sequence and the On-demand system can be specified in the protocol.
  • a correspondence table between the unified information It may be a one-to-one relationship, that is, one preamble sequence corresponds to one system information; or may be a one-to-many relationship, that is, one preamble sequence corresponds to a plurality of system information.
  • the UE may randomly select a required On-demand system information as the On-demand of the request. system message. How to select sequence resources and time-frequency resources can be as described later.
  • the RAR data packet of the present invention may contain a plurality of system information (as described later), although the UE does not request other required On-demand system information, it is possible that other required On-demand systems are available.
  • the information is requested by other UEs and included in the RAR data packet, so that the UE can acquire the other required On-demand system information, thereby reducing the number or cost of requests.
  • the UE may select the required On-demand according to the correspondence between the preamble sequence and the On-demand system information. a preamble sequence corresponding to the system information; and selecting a time-frequency resource in the dedicated random access resource configured for the On-demand system information request in the network; sending the selected preamble on the selected time-frequency resource The signal constructed by the sequence.
  • the multiple preamble sequences corresponding to the required multiple On-demand system information may be selected according to the correspondence between the preamble sequence and the On-demand system information. And selecting, in a dedicated random access resource configured by the network for the On-demand system information request, a time-frequency resource; and transmitting, on the selected time-frequency resource, the selected multiple different preamble sequences signal.
  • a plurality of different preamble sequences may be superimposed, or other signal processing methods may be employed, which is not limited by the present invention.
  • signal processing methods may be employed, which is not limited by the present invention.
  • the present invention is further described below by taking the UE requesting multiple On-demand system information as an example.
  • FIG. 2 is another schematic diagram of a method for acquiring system information according to an embodiment of the present invention. As shown in FIG. 2, the method for acquiring system information includes:
  • Step 201 The user equipment determines that multiple system information is required.
  • Step 202 The user equipment selects a corresponding multiple preamble sequence according to the correspondence between the preamble sequence and the system information.
  • Step 203 The user equipment constructs a random access signal based on the selected multiple preamble sequences.
  • Step 204 The user equipment selects a time-frequency resource in the dedicated random access resource.
  • Step 205 The user equipment sends the random access signal on the selected time-frequency resource.
  • the network side may detect multiple preamble sequences according to the random access signal, and then search for a correspondence between the preamble sequence and the system information, and pass multiple system information requested by the UE through one. Or multiple RAR data packets are carried and sent to the UE.
  • the network side may use multiple RAR data packets to carry the system information.
  • one or more RARs may be scrambled by the same identification.
  • the random access radio network temporary identifier RA-RNTI, Random Access Radio Network Tempory Identity
  • the RA-RNTI can adopt the following formula:
  • RA-RNTI 1+t_id+10*f_id;
  • the t_id indicates the subframe number that the UE chooses to send the preamble
  • the f_id indicates the location of the frequency resource that the UE chooses to send the preamble.
  • the present invention is not limited thereto, and for example, a pre-defined cell uniform identifier may also be used.
  • only one time domain resource t_id and one frequency domain resource f_id may be defined in each random access period for transmitting a preamble signal requesting On-demand system information, and the UE in the same cell is used at this time.
  • the RA-RNTI is the same. Therefore, the RAR can carry multiple On-demand system information, thereby improving the transmission efficiency of the system information.
  • the method for obtaining the system information may further include:
  • Step 206 The user equipment receives a random access response in a receiving window.
  • Step 207 the user equipment determines whether the required system information is not received; if the required system information is not received, proceeding to step 206; if all the required system information is received, stopping receiving the random Access the response and end the request process.
  • the UE may try to receive the RAR in one RAR receiving window. And the content of the requested On-demand system information can be found according to the preamble serial number (for example, RAPID) in the RAR. Unlike existing solutions, the UE may continuously attempt to receive one or more RARs scrambled by the same RA-RNTI within the RAR receive window until all required On-demand System information is received.
  • the preamble serial number for example, RAPID
  • FIG. 2 only schematically shows various steps of the system information request on the user equipment side, and the present invention is not limited thereto; for example, the execution order between the steps may be appropriately adjusted, and other Some steps or some of these steps are reduced.
  • system information can be associated with frequency domain resources.
  • Different frequency domain resources may correspond to different system information.
  • a correspondence table between frequency domain resources and On-demand system information may be specified in the protocol. It may be a one-to-one relationship, that is, one frequency domain resource corresponds to one system information; or may be a one-to-many relationship, that is, one frequency domain resource corresponds to multiple system information.
  • the UE may randomly select a required On-demand system information as the On-demand of the request. system message. How to select sequence resources and time-frequency resources can be as described later.
  • the RAR data packet of the present invention may contain a plurality of system information (as described later), although the UE does not request other required On-demand system information, it is possible that other required On-demand systems are available.
  • the information is requested by other UEs and included in the RAR data packet, so that the UE can acquire the other required On-demand system information, thereby reducing the number or cost of requests.
  • the UE may select the required On- according to the correspondence between the frequency domain resource and the On-demand system information. a frequency domain resource corresponding to the system information; and selecting a time domain resource and a sequence resource (for example, a preamble) in the dedicated random access resource configured by the network for the On-demand system information request; The time domain resource and the frequency domain resource send a signal constructed by the selected preamble.
  • the multiple frequency domains corresponding to the required multiple On-demand system information may be selected according to the correspondence between the frequency domain resources and the On-demand system information. And selecting, in a dedicated random access resource configured by the network for the On-demand system information request, a time-frequency resource and a sequence resource (for example, a preamble); and selecting the time domain resource and the multiple frequency On the domain resource, the signal constructed by the selected preamble is simultaneously transmitted.
  • a dedicated random access resource configured by the network for the On-demand system information request
  • a time-frequency resource and a sequence resource for example, a preamble
  • the present invention is further described below by taking the UE requesting multiple On-demand system information as an example.
  • FIG. 3 is another schematic diagram of a method for acquiring system information according to an embodiment of the present invention. As shown in FIG. 3, the method for obtaining system information includes:
  • Step 301 The user equipment determines that multiple system information is required.
  • Step 302 The user equipment selects corresponding multiple frequency domain resources according to the correspondence between the frequency domain resource and the system information.
  • Step 303 The user equipment selects a preamble sequence in a dedicated random access resource and constructs a random access signal.
  • Step 304 The user equipment selects a time domain resource in the dedicated random access resource.
  • Step 305 The user equipment simultaneously sends the random access signal on the selected time domain resource and multiple frequency domain resources.
  • the network side may detect multiple frequency domain resources according to the random access signal, and then search for a correspondence between the frequency domain resource and the system information, and multiple system information requested by the UE. It is carried and sent to the UE through one or more RAR data packets.
  • the network side may use multiple RAR data packets to carry the system information.
  • one or more RAR data packets may be scrambled by the same identification.
  • the RA-RNTI is used for scrambling.
  • the RA-RNTI can adopt the following formula:
  • RA-RNTI 1+t_id
  • t_id indicates the subframe number that the UE chooses to send the preamble
  • the RA-RNTI is independent of the f_id.
  • the present invention is not limited thereto, and for example, a pre-defined cell uniform identifier may also be used.
  • the RAR can carry multiple On-demand system information, thereby improving the transmission efficiency of the system information.
  • the method for obtaining the system information may further include:
  • Step 306 The user equipment receives a random access response in a receiving window.
  • Step 307 the user equipment determines whether the required system information is not received; if the required system information is not received, proceeding to step 306; if all the required system information is received, stopping receiving the random Access the response and end the request process.
  • the UE may taste in an RAR receiving window. Try to receive RAR. And the content of the requested On-demand system information can be found according to a frequency domain resource tag (eg, RAPID) in the RAR. Unlike existing solutions, the UE may continuously attempt to receive one or more RARs scrambled by the same RA-RNTI within the RAR receive window until all required On-demand system information is received.
  • a frequency domain resource tag eg, RAPID
  • FIG. 3 only schematically shows various steps of the system information request on the user equipment side, and the present invention is not limited thereto; for example, the execution order between the steps may be appropriately adjusted, and other Some steps or some of these steps are reduced.
  • the random access request for requesting the required system information is sent based on the preamble sequence and/or the frequency domain resource corresponding to the required system information; and the random access response is continuously received in the receiving window until required System information is received. Therefore, it is possible to request multiple system information in one random access procedure, reduce the request delay of the system information, reduce the situation that the system information of the network side and the UE side are not synchronized, and receive multiple system information in one receiving window.
  • the transmission efficiency of system information is high, which can further reduce the energy consumption on the network side.
  • the embodiment of the present invention describes the request and the acquisition process when the system information is changed from the perspective of the user equipment side, and the same content as the first embodiment will not be described again.
  • the request and acquisition process of this embodiment may be a subsequent process of the initial request and the acquisition process in Embodiment 1; or may be a process independent of Embodiment 1, that is, the initial request and the acquisition corresponding to this embodiment.
  • the process can also use existing solutions.
  • the method for acquiring system information includes:
  • Step 401 The user equipment receives a paging message sent by the base station indicating that the system information is changed.
  • Step 402 The user equipment receives one or more random access responses sent by the base station in the receiving window even if the signal for requesting the system information is not sent, and obtains the changed according to the one or more random access responses. system message.
  • the network side when the network side (for example, the base station) has the On-demand system information changed, the network side may notify the UE in the cell in a paging manner. Then, even if the network side does not receive any request from the UE, it may actively change the On-demand system information that has changed by one or a certain time (for example, the RAR receiving window) after notifying the UE On-demand system information change. Multiple RAR data The packet is carried and sent to the UE.
  • the network side for example, the base station
  • the network side may notify the UE in the cell in a paging manner. Then, even if the network side does not receive any request from the UE, it may actively change the On-demand system information that has changed by one or a certain time (for example, the RAR receiving window) after notifying the UE On-demand system information change. Multiple RAR data
  • the packet is carried and sent to the UE.
  • the paging message may indicate that the changed system information is O-demand system information, and the user equipment may not send the system information request according to the paging message. That is, the base station may implicitly indicate that the user equipment does not send the system information request according to the paging message.
  • the RAR receiving window may include a paging occasion interval, and may also include multiple paging opportunity intervals. By including multiple paging opportunity intervals, more or even all UEs can be notified to receive the changed On-demand system information, thereby improving the transmission efficiency of On-demand system information.
  • the identity e.g., RA-RNTI
  • the identity that scrambles one or more random access responses may be the same for the same cell. That is, one or more RAR data packets may be scrambled by a cell-uniform RNTI.
  • the value of the RNTI may be specified by a protocol in advance, or may be calculated by an existing RA-RNTI formula, and may require the intra-cell UE to use the same RNTI. value.
  • the UE does not send the Ona-demand system information request such as the preamble, and the UE is within a certain period of time (for example, the RAR receiving window) after receiving the indication. Try to receive all RARs and get the changed On-demand system information in RAR.
  • the base station after transmitting the paging message indicating that the system information changes, the base station actively sends one or more random access responses including the changed system information. Therefore, multiple system information can be multiplexed into one or more random access responses for transmission, which can improve the efficiency of system information transmission and reduce power consumption on the network side.
  • the user equipment when the system information on the network side changes, the user equipment does not need to send a system information request, and congestion and energy consumption caused by a large number of UEs due to requesting changed system information can be avoided.
  • the embodiment of the present invention provides a method for acquiring system information, and the initial request and the acquisition process of the system information are described from the perspective of the base station side, and the same content as that of Embodiment 1 is not described herein.
  • FIG. 5 is a schematic diagram of a method for acquiring system information according to an embodiment of the present invention. As shown in FIG. 5, the method for obtaining system information includes:
  • Step 501 The base station receives a random access request that is sent by the user equipment and requests one or more system information, where the correspondence between the preamble sequence and/or the frequency domain resource that sends the random access request and the system information is determined in advance. ;
  • Step 502 The base station adds the corresponding system information to one or more random access responses based on the preamble sequence and/or the frequency domain resource.
  • Step 503 The base station sends the one or more random access responses to the user equipment.
  • the base station may receive a random access request sent by one or more user equipments; and add system information required by the one or more user equipments to one or more random access responses. This can improve the efficiency of system information transmission.
  • the system information can be associated with a preamble sequence.
  • a preamble sequence may correspond to one or more system information; different system information in the random access response may be distinguished by different preamble sequences.
  • one or more random access responses can be scrambled by the same identity (eg, RA-RNTI).
  • system information can be associated with frequency domain resources.
  • a frequency domain resource may correspond to one or more system information; different system information in the random access response may be distinguished by different frequency domain resource tags.
  • one or more random access responses may be scrambled by the same identity (eg, RA-RNTI); or an identifier (eg, RA-RNTI) that scrambles one or more random access responses is independent of the frequency domain resource tag.
  • the random access request for requesting the required system information is sent based on the preamble sequence and/or the frequency domain resource corresponding to the required system information; and the random access response is continuously received in the receiving window until required System information is received. Therefore, it is possible to request multiple system information in one random access procedure, reduce the request delay of the system information, reduce the situation that the system information of the network side and the UE side are not synchronized, and receive multiple system information in one receiving window.
  • the transmission efficiency of system information is high, which can further reduce the energy consumption on the network side.
  • the embodiment of the present invention describes the request and the acquisition process when the system information is changed from the perspective of the base station side, and the same content as that of the third embodiment will not be described again.
  • the request and the acquisition process in this embodiment may be the subsequent process of the initial request and the acquisition process in the embodiment 3, or may be the process independent of the embodiment 3, that is, the initial request and the acquisition corresponding to the embodiment.
  • the process can also use existing solutions.
  • FIG. 6 is a schematic diagram of a method for acquiring system information according to an embodiment of the present invention. As shown in FIG. 6, the method for obtaining system information includes:
  • Step 601 The base station sends, to the user equipment, a paging message indicating that the system information is changed.
  • Step 602 The base station sends one or more random access responses to the user equipment, where the one or more random access responses include the changed system information.
  • the network side when the network side (for example, the base station) has the On-demand system information changed, the network side may notify the UE in the cell in a paging manner. Then, even if the network side does not receive any request from the UE, it may actively change the On-demand system information that has changed by one or a certain time (for example, the RAR receiving window) after notifying the UE On-demand system information change. Multiple RAR data packets are carried and sent to the UE.
  • the network side for example, the base station
  • the network side may notify the UE in the cell in a paging manner. Then, even if the network side does not receive any request from the UE, it may actively change the On-demand system information that has changed by one or a certain time (for example, the RAR receiving window) after notifying the UE On-demand system information change. Multiple RAR data packets are carried and sent to the UE.
  • the identity e.g., RA-RNTI
  • the identity that scrambles one or more random access responses may be the same for the same cell. That is, one or more RAR data packets may be scrambled by a cell-uniform RNTI.
  • the value of the RNTI may be specified by a protocol in advance, or may be calculated by an existing RA-RNTI formula, and may require the intra-cell UE to use the same RNTI. value.
  • the base station after transmitting the paging message indicating that the system information changes, the base station actively sends one or more random access responses including the changed system information. Therefore, multiple system information can be multiplexed into one or more random access responses for transmission, which can improve the efficiency of system information transmission and reduce power consumption on the network side.
  • the user equipment when the system information on the network side changes, the user equipment does not need to send a system information request, and congestion and energy consumption caused by a large number of UEs due to requesting changed system information can be avoided.
  • the embodiment of the present invention provides a device for acquiring system information, which is configured in a user equipment.
  • the embodiment of the present invention corresponds to the method for acquiring system information in Embodiments 1 and 2, and the same content is not described herein.
  • FIG. 7 is a schematic diagram of a system information acquiring apparatus according to an embodiment of the present invention. As shown in FIG. 7, the system information acquiring apparatus 700 includes:
  • a resource selection unit 701 which selects a preamble sequence and/or a frequency domain resource corresponding to the system information when the user equipment needs one or more system information; wherein the preamble sequence and/or the frequency domain resource and the system The correspondence of information is predetermined;
  • the request sending unit 702 according to the corresponding preamble sequence and/or the frequency domain resource, simultaneously sends a random access request for requesting the one or more system information to the base station;
  • An information receiving unit 703 which continuously receives one or more random connections sent by the base station in a receiving window In response, until the required system information is received.
  • one preamble sequence may correspond to one or more system information; different system information in the random access response may be distinguished by different preamble sequences. And, the one or more random access responses can be scrambled by the same identity (eg, RA-RNTI).
  • the resource selection unit 701 may select multiple preamble sequences corresponding to the multiple system information when the user equipment needs multiple system information, and select one time-frequency resource among the pre-configured random access resources.
  • the request sending unit 702 may send, according to the selected time-frequency resource, a signal formed based on the selected plurality of preamble sequences.
  • one frequency domain resource may correspond to one or more system information; different system information in the random access response may be distinguished by different frequency domain resource tags.
  • the one or more random access responses may be scrambled by the same identifier (eg, RA-RNTI); or an identifier (eg, RA-RNTI) scrambled with one or more random access responses and a frequency domain resource marker None.
  • the resource selection unit 701 may select multiple frequency domain resources corresponding to the multiple system information when the user equipment needs multiple system information, and select one time domain resource among the pre-configured random access resources. And a leader sequence.
  • the request sending unit 702 may simultaneously transmit a signal formed based on the preamble sequence on the selected time domain resource and the plurality of frequency domain resources.
  • FIG. 8 is another schematic diagram of an apparatus for acquiring system information according to an embodiment of the present invention.
  • the system information acquiring apparatus 800 includes: a resource selecting unit 701, a request sending unit 702, and an information receiving unit 703; .
  • system information obtaining apparatus 800 may further include:
  • the paging receiving unit 801 receives a paging message sent by the base station indicating that the system information is changed.
  • the information receiving unit 703 is further configured to: receive, after the user equipment does not send a signal for requesting system information, receive one or more random access responses sent by the base station in a receiving window, and according to the one or Multiple random access responses obtain changed system information.
  • FIG. 9 is another schematic diagram of an apparatus for acquiring system information according to an embodiment of the present invention, wherein components related to initial request and acquisition of system information are not shown, and related art may be referred to.
  • the system information acquiring apparatus 900 includes:
  • the paging receiving unit 901 receives a paging message sent by the base station indicating that the system information is changed.
  • the information receiving unit 902 receives one or more random access responses sent by the base station in a receiving window even if the user equipment does not send a signal for requesting system information, and according to the one or more random connections In response to the changed system information.
  • FIGS. 7 to 9 only schematically show some components related to the present invention, but the present invention is not limited thereto, and other components of the device for acquiring system information, for example, are not shown in FIGS. 7 to 9.
  • related art can be referred to, and details are not described herein again.
  • the random access request for requesting the required system information is sent based on the preamble sequence and/or the frequency domain resource corresponding to the required system information; and the random access response is continuously received in the receiving window until required System information is received. Therefore, it is possible to request multiple system information in one random access procedure, reduce the request delay of the system information, reduce the situation that the system information of the network side and the UE side are not synchronized, and receive multiple system information in one receiving window.
  • the transmission efficiency of system information is high, which can further reduce the energy consumption on the network side.
  • the base station actively sends one or more random access responses including the changed system information after transmitting a paging message indicating that the system information is changed. Therefore, multiple system information can be multiplexed into one or more random access responses for transmission, which can improve the efficiency of system information transmission and reduce power consumption on the network side.
  • the user equipment does not need to send a system information request, and congestion and energy consumption caused by a large number of UEs due to requesting changed system information can be avoided.
  • the embodiment of the present invention provides a device for acquiring system information, which is configured in a base station, and the method for obtaining the system information of the embodiments 3 and 4 is not described herein.
  • FIG. 10 is a schematic diagram of an apparatus for acquiring system information according to an embodiment of the present invention.
  • the system information acquiring apparatus 1000 includes:
  • a request receiving unit 1001 which receives a random access request sent by the user equipment for requesting one or more system information; wherein a correspondence between the preamble sequence and/or the frequency domain resource that sends the random access request and the system information is Predetermined;
  • the response generating unit 1002 adds the corresponding system information to one or more random access responses based on the preamble sequence and/or the frequency domain resource;
  • the information sending unit 1003 sends the one or more random access responses to the user equipment.
  • one preamble sequence may correspond to one or more system information; different system information in the random access response may be distinguished by different preamble sequences. And, the one or more random access responses can be scrambled by the same identity (eg, RA-RNTI).
  • one frequency domain resource may correspond to one or more system information; different system information in the random access response may be distinguished by different frequency domain resource tags.
  • the one or more random access responses may be scrambled by the same identifier (eg, RA-RNTI); or an identifier (eg, RA-RNTI) scrambled with one or more random access responses and a frequency domain resource marker None.
  • the request receiving unit 1001 may receive a random access request sent by one or more user equipments; and the response generating unit 1002 may add the system information required by the one or more user equipments to one or more Random access response.
  • the system information acquiring apparatus 1100 includes: a request receiving unit 1001, a response generating unit 1002, and an information sending unit 1003; .
  • the system information acquiring apparatus 1100 may further include:
  • a paging sending unit 1101 which sends a paging message indicating that the system information is changed to the user equipment;
  • the information sending unit 1003 is further configured to: send one or more random access responses to the user equipment; wherein the one or more random access responses include the changed system information.
  • FIG. 12 is another schematic diagram of an apparatus for acquiring system information according to an embodiment of the present invention, wherein components related to initial request and acquisition of system information are not shown, and related art may be referred to.
  • the system information acquiring apparatus 1200 includes:
  • a paging sending unit 1201 which sends a paging message indicating that the system information is changed to the user equipment;
  • the information transmitting unit 1202 transmits one or more random access responses to the user equipment; wherein the one or more random access responses include the changed system information.
  • FIGS. 10 to 12 only schematically show some components related to the present invention, but the present invention is not limited thereto, and other components of the device for acquiring system information, for example, are not shown in FIGS. 10 to 12.
  • FIGS. 10 to 12 For reference, related art can be referred to, and details are not described herein again.
  • the random access request for requesting the required system information is sent based on the preamble sequence and/or the frequency domain resource corresponding to the required system information; and the random access response is continuously received in the receiving window until required System information is received. Therefore, it is possible to request multiple system information in one random access procedure, reduce the request delay of the system information, reduce the situation that the system information of the network side and the UE side are not synchronized, and receive multiple system information in one receiving window.
  • the transmission efficiency of system information is high, which can further reduce the energy consumption on the network side.
  • the base station actively sends one or more random access responses including the changed system information after transmitting a paging message indicating that the system information is changed. Therefore, multiple system information can be multiplexed into one or more random access responses for transmission, which can improve the efficiency of system information transmission and reduce power consumption on the network side.
  • the user equipment does not need to send a system information request, and congestion and energy consumption caused by a large number of UEs due to requesting changed system information can be avoided.
  • the embodiment of the present invention further provides a communication system, and the same content as Embodiments 1 to 7 will not be described again.
  • FIG. 13 is a schematic diagram of a communication system according to an embodiment of the present invention.
  • the communication system 1300 may include a base station 1301 and a user equipment 1302.
  • the base station 1301 is configured with the system information acquiring apparatus 1000, 1100 or 1200 as described in Embodiment 6, and the user equipment 1302 is configured with the system information acquiring apparatus 700, 800 or 900 as described in Embodiment 5.
  • the embodiment of the invention further provides a user equipment.
  • FIG. 14 is a schematic diagram of a user equipment according to an embodiment of the present invention.
  • the user device 1400 can include a central processing unit 100 and a memory 140; the memory 140 is coupled to the central processing unit 100.
  • the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
  • the functionality of the system information acquisition device 700, 800 or 900 can be integrated into the central processor 100.
  • the central processing unit 100 may be configured to implement the method for acquiring system information described in Embodiment 1 and/or Embodiment 2.
  • the central processing unit 100 can be configured to perform control of selecting a preamble sequence and/or a frequency domain resource corresponding to the system information when one or more system information is needed; wherein the preamble sequence and/or Corresponding relationship between the frequency domain resource and the system information is predetermined; based on the corresponding preamble sequence and/or frequency a domain resource, simultaneously transmitting, to the base station, a random access request for requesting the one or more system information; and continuously receiving one or more random access responses sent by the base station in the receiving window until the required system information is It was received.
  • the central processing unit 100 may be configured to perform control of: receiving a paging message sent by the base station indicating that the system information is changed; and receiving the received window even if the signal for requesting the system information is not transmitted Determining one or more random access responses sent by the base station, and obtaining the changed system information according to the one or more random access responses.
  • system information obtaining apparatus 700, 800 or 900 may be configured separately from the central processing unit 100, for example, the system information acquiring apparatus 700, 800 or 900 may be configured as a chip connected to the central processing unit 100.
  • the functions of the system information acquiring apparatus 700, 800 or 900 are realized by the control of the central processing unit 100.
  • the user equipment 1400 may further include: a communication module 110, an input unit 120, a display 160, and a power source 170.
  • the functions of the above components are similar to those of the prior art, and are not described herein again. It should be noted that the user equipment 1400 does not have to include all the components shown in FIG. 14, and the above components are not required; in addition, the user equipment 1400 may further include components not shown in FIG. There are technologies.
  • the embodiment of the invention further provides a base station.
  • FIG. 15 is a schematic diagram showing the structure of a base station according to an embodiment of the present invention.
  • base station 1500 can include a central processing unit (CPU) 200 and memory 210; and memory 210 is coupled to central processing unit 200.
  • the memory 210 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 200.
  • the central processing unit 200 can be configured to implement the functions of the system information acquisition device 1000, 1100 or 1200.
  • the central processing unit 200 can be configured to perform control of receiving a random access request sent by the user equipment requesting one or more system information; wherein the preamble sequence and/or the frequency domain resource of the random access request is transmitted Corresponding relationship with the system information is predetermined; adding the corresponding system information to one or more random access responses based on the preamble sequence and/or frequency domain resources; and transmitting the One or more random access responses.
  • the central processing unit 200 can be configured to perform control of: transmitting a paging message indicating that the system information has changed to the user equipment; and transmitting one or more random access responses to the user equipment;
  • the one or more random access responses include the changed system information.
  • the base station 1500 may further include: a transceiver 220, an antenna 230, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It is to be noted that the base station 1500 does not have to include all of the components shown in FIG. 15; in addition, the base station 1500 may also include components not shown in FIG. 15, and reference may be made to the prior art.
  • the embodiment of the present invention further provides a computer readable program, wherein the program causes the system information obtaining device or the user equipment to perform the embodiment 1 and/ when the system information acquiring device or the user device executes the program. Or the method for acquiring system information described in Embodiment 2.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the system information acquisition device or the user equipment to perform the system information described in Embodiment 1 and/or Embodiment 2. Get the method.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in an acquiring device or a base station of system information, the program causes the acquiring device or base station of the system information to execute Embodiment 3 and/or The method for acquiring system information described in Embodiment 4.
  • An embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes an acquisition device or a base station of the system information to perform acquisition of the system information described in Embodiment 3 and/or Embodiment 4. method.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • the method/device for acquiring system information described in connection with the embodiments of the present invention may be directly embodied as hardware, a software module executed by a processor, or a combination of both.
  • one or more of the functional block diagrams shown in FIG. 7 and/or one or more combinations of functional block diagrams may correspond to various software of a computer program flow.
  • Modules can also correspond to individual hardware modules.
  • These software modules may correspond to the respective steps shown in FIG. 1, respectively.
  • These hardware modules can be implemented, for example, by curing these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • the software module can be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage known in the art.
  • Storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

L'invention concerne un dispositif et un procédé d'acquisition d'informations système, ainsi qu'un système de communication. Le procédé d'acquisition consiste : à sélectionner, au moyen d'une unité d'équipement utilisateur (UE), lorsqu'un ou plusieurs éléments d'informations système sont souhaités, des séquences de préambule et/ou des ressources de domaine de fréquence correspondant aux éléments d'information système ; à envoyer simultanément, sur la base des séquences de préambule et/ou des ressources de domaine de fréquence correspondantes, des requêtes d'accès aléatoire à une station de base ; à continuer, dans une fenêtre de réception, à recevoir une ou plusieurs réponses d'accès aléatoire envoyées par la station de base jusqu'à la réception de tous les éléments d'informations système souhaités. De cette manière, la présente invention réduit un retard de requête d'informations système, évite des informations système non synchronisées entre un côté réseau et un côté UE, et améliore l'efficacité de transmission des informations système afin de réduire davantage la consommation d'énergie du côté réseau.
PCT/CN2016/090632 2016-07-20 2016-07-20 Dispositif et procédé d'acquisition d'informations système et système de communication Ceased WO2018014247A1 (fr)

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