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WO2017005129A1 - Procédé et dispositif d'accès dans un réseau sans fil - Google Patents

Procédé et dispositif d'accès dans un réseau sans fil Download PDF

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Publication number
WO2017005129A1
WO2017005129A1 PCT/CN2016/087762 CN2016087762W WO2017005129A1 WO 2017005129 A1 WO2017005129 A1 WO 2017005129A1 CN 2016087762 W CN2016087762 W CN 2016087762W WO 2017005129 A1 WO2017005129 A1 WO 2017005129A1
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WIPO (PCT)
Prior art keywords
access
user equipment
access request
resources
feedback information
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
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PCT/CN2016/087762
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English (en)
Chinese (zh)
Inventor
刘佳敏
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Publication of WO2017005129A1 publication Critical patent/WO2017005129A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of wireless communications technologies, and in particular, to an access method and device in a wireless network.
  • the purpose of the application is to provide an access method and device in a wireless network, to solve the problem of how to reduce signaling overhead and reduce access delay when accessing multiple cells.
  • An access method in a wireless network comprising:
  • the user equipment sends an access request for multiple cells on multiple access resources
  • the user equipment receives feedback information of at least one access device in response to the access request.
  • the user equipment is configured to send the resource configuration information of the multiple access resources that are required to be sent by the user equipment, where the at least two access devices in the predetermined area are sent on a unified resource;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by at least two access devices in a predetermined area on respective resources;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by a macro access device in a predetermined area.
  • the user equipment sends an access request for multiple cells on multiple access resources, including:
  • the user equipment sends an access request for multiple cells on multiple access resources.
  • the receiving, by the user equipment, feedback information of the at least one access device in response to the access request includes:
  • the user equipment receives feedback information of the at least one access device in response to the access request within a predetermined time window.
  • An access method in a wireless network comprising:
  • the access device in the predetermined area receives the access request of the user equipment for the multi-cell on the multiple access resources
  • At least one of the access devices sends feedback information to the user equipment in response to the access request.
  • the user equipment is resource configuration information of the multiple access resources that need to be learned to send the access request, where at least two access devices in the predetermined area are sent on a unified resource; or,
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is that at least two access devices in the predetermined area are sent on respective resources;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by a macro access device in the predetermined area.
  • the sending, by the at least one access device, the feedback information that is sent to the user equipment, in response to the access request includes:
  • At least one of the access devices sends the same feedback information in response to the access request to the user equipment on a unified resource;
  • At least one of the access devices respectively sends feedback information in response to the access request to the user equipment on respective resources.
  • the at least one access device sends a response to the user equipment.
  • the method further includes: the access device that receives the access request reports the access request to the centralized control node;
  • the at least one access device sends a response to the user equipment.
  • the method further includes: the access device that receives the access request reports the measurement information of the user equipment to the centralized control node.
  • the access device that receives the access request reports the access request to the centralized control node, where the access device that receives the access request meets the predetermined condition
  • the incoming request is reported to the centralized control node.
  • the at least one access device sends, to the user equipment, feedback information that is responsive to the access request, including: at least one of the access devices by means of negotiation or according to a predetermined feedback rule
  • the user equipment sends feedback information in response to the access request.
  • An access method in a wireless network comprising:
  • the centralized control node receives an access request for the multi-cell of the user equipment reported by the access device in the predetermined area, where the access request is received by the access device on the multiple access resource;
  • the centralized control node determines the access device that responds to the access request
  • the centralized control node sends a feedback indication to the determined access device.
  • the embodiment of the present application provides a user equipment, including:
  • An access request sending module configured to send an access request for multiple cells on multiple access resources
  • the access processing module is configured to receive feedback information of the at least one access device in response to the access request.
  • the user equipment is configured to send the resource configuration information of the multiple access resources that are required to be sent by the user equipment, where the at least two access devices in the predetermined area are sent on a unified resource;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by at least two access devices in a predetermined area on respective resources;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by a macro access device in a predetermined area.
  • the access processing module is configured to: receive, in a predetermined time window, feedback information of the at least one access device in response to the access request.
  • the embodiment of the present application further provides another access device, including:
  • transceiver Processor, transceiver, and memory.
  • the processor is used to read the program from memory and perform the following process:
  • the transceiver is configured to receive and transmit data under the control of the processor
  • the memory is used to hold the data used by the processor to perform operations.
  • the user equipment is configured to send the resource configuration information of the multiple access resources that are required to be sent by the user equipment, where the at least two access devices in the predetermined area are sent on a unified resource;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by at least two access devices in a predetermined area on respective resources;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by a macro access device in a predetermined area.
  • the processor is specifically used to read the program from the memory, and the following process is performed:
  • an access device including:
  • An access request receiving module configured to receive, by the multi-access resource, an access request for the multi-cell of the user equipment
  • a feedback information sending module configured to send, to the user equipment, feedback information that is responsive to the access request.
  • the user equipment is configured to send the resource configuration information of the multiple access resources that are required to be sent by the user equipment, where the at least two access devices in the predetermined area are sent on a unified resource;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by at least two access devices in a predetermined area on respective resources;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by a macro access device in a predetermined area.
  • the feedback information sending module is configured to:
  • the access device further includes an access request reporting module, configured to: report the access request to the centralized control node;
  • the feedback information sending module is configured to: after receiving the feedback indication of the centralized control node, send feedback information in response to the access request to the user equipment.
  • the feedback information sending module is configured to: send, by using the negotiation or according to a predetermined feedback rule, feedback information that is responsive to the access request to the user equipment.
  • an access device including:
  • transceiver Processor, transceiver, and memory.
  • the processor is used to read the program from memory and perform the following process:
  • the transceiver is configured to receive and transmit data under the control of the processor
  • the memory is used to hold the data used by the processor to perform operations.
  • the user equipment is configured to send the resource configuration information of the multiple access resources that are required to be sent by the user equipment, where the at least two access devices in the predetermined area are sent on a unified resource;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by at least two access devices in a predetermined area on respective resources;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is pre-
  • the macro access device in the fixed area is sent by the device.
  • the processor when the user equipment sends feedback information in response to the access request, the processor is configured to read the program from the memory, and perform the following process:
  • the processor is further configured to: read the program from the memory, and perform the following process: reporting the access request to the centralized control node; and sending, to the user equipment, feedback information in response to the access request,
  • the processor is configured to read the program from the memory, and execute the following process: after receiving the feedback indication of the centralized control node, sending feedback information in response to the access request to the user equipment.
  • the processor when sending the feedback information in response to the access request to the user equipment, the processor is configured to read the program from the memory, and perform the following process:
  • the feedback information in response to the access request is sent to the user equipment by negotiation or according to a predetermined feedback rule.
  • the embodiment of the present application further provides a centralized control node, including:
  • An access request receiving module configured to receive an access request for a multi-cell of a user equipment reported by an access device in a predetermined area, where the access request is received by the access device on a multi-access resource;
  • An access control module configured to determine the access device that responds to the access request, and send a feedback indication to the determined access device.
  • the embodiment of the present application further provides a centralized control node, including:
  • transceiver Processor, transceiver, and memory.
  • the processor is used to read the program from memory and perform the following process:
  • the transceiver is configured to receive and transmit data under the control of the processor
  • the memory is used to hold the data used by the processor to perform operations.
  • the technical solution provided by the embodiment of the present application is configured with multiple access resources, and the user equipment may initiate an access request for multiple cells on multiple access resources.
  • a random access procedure is directed to multiple cells, and multiple random access procedures need not be separately initiated, thereby simplifying the signaling process, reducing signaling overhead, and reducing access delay.
  • FIG. 1 is a flowchart of a user equipment side method according to an embodiment of the present application
  • FIG. 2 is a flowchart of a method for accessing an access device according to an embodiment of the present disclosure
  • FIG. 3 is a flowchart of a centralized control node side method according to an embodiment of the present application
  • FIG. 4 is a schematic diagram of a user equipment according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a user equipment according to another embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of an access device according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of an access device according to another embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of a centralized control node according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a centralized control node according to another embodiment of the present application.
  • FIG. 1 is a schematic diagram of an implementation manner of an access method in a wireless network provided by an embodiment of the present application on a user equipment side, and specifically includes the following operations:
  • Step 100 The user equipment sends an access request for multiple cells on multiple access resources.
  • Step 110 The user equipment receives feedback information of the at least one access device in response to the access request.
  • the user equipment performs subsequent access interaction with the access device according to the feedback information.
  • the access device may be a macro access device or an access node (AP).
  • AP access node
  • the macro access device may be a macro base station, a relay node, or the like.
  • the access node may be a micro base station (Micro), a pico base station (Pico), a home base station, or a femto base station (Femto).
  • the method provided by the embodiment of the present application is configured with multiple access resources, and the user equipment may initiate an access request for multiple cells on multiple access resources.
  • a random access procedure is directed to multiple cells, and multiple random access procedures need not be separately initiated, thereby simplifying the signaling process, reducing signaling overhead, and reducing access delay. It can be seen that the technical solution provided by the embodiment of the present application improves access efficiency and user experience.
  • the same multiple access resource is configured in a predetermined area, where the predetermined area may be one or more macro cells (which may be macro cells of a homogeneous network or macro cells of a heterogeneous network).
  • the range can also be the coverage of multiple micro-access devices.
  • the user equipment obtains resource configuration information in advance, and the resource configuration information is generally sent to the user equipment in a broadcast mode or a dedicated signaling manner. That is, the user equipment needs to know the resource configuration information of the multiple access resources, so as to initiate an access request on the multiple access resources indicated by the resource configuration information.
  • the resource configuration information of the multiple access resources that are required to be learned by the user equipment for sending the access request may be at least two connections in the predetermined area.
  • the inbound device is sent on the unified resource; or the at least two access devices in the predetermined area are sent on the respective resources; or may be sent by the macro access device in the predetermined area.
  • the resource configuration information of the multiple access resources may include: a time-frequency resource location of the uplink signal, a repetition period, a transmission parameter, a codeword parameter, a transmission power parameter, a collision backoff parameter, and a retransmission and a repetition parameter after the access failure. Wait. Further, the method may further include: condition information that is required to be triggered by the user equipment that initiates multiple access, for example, the capability of the user equipment needs to meet certain multiple transmission conditions and the like.
  • one solution is to configure two or more multiple access resources for the same predetermined area, and the user equipment is initiating.
  • a certain random factor is required, for example, randomly selecting a resource from the multiple access resources indicated by the acquired resource configuration information to initiate an access request.
  • Multiple access resources usually exist periodically.
  • the above two or more multiple access resources may be resources with different periods or resources with the same period (such as two or more in each period). Resource block).
  • the user equipment may simultaneously receive resource configuration information of different multiple access resources from the two predetermined areas, then the user equipment may select all or An access request is initiated on a part of the multiple access resources.
  • the above step 100 is performed when multiple access conditions are met.
  • the multiple access condition described in the embodiment of the present application refers to that the user equipment has multiple access capabilities.
  • the multiple access condition described in the embodiment of the present application refers to a trigger condition that requires multiple access (also referred to as a scenario where multiple access is required).
  • the trigger condition for performing multiple access may be the same as the trigger condition of the traditional access procedure.
  • the user equipment enters the connection state from the idle (IDLE) state, and needs to initiate an access procedure, and in order to have more cells for the user equipment (UE) to perform subsequent better services, the user equipment with multiple access capabilities may Initiate a multiple access process.
  • the process of initiating random access informs the network side that it has data to send, and in order to have more cells to serve itself, the user equipment with multiple access capabilities can directly initiate multiple access procedures.
  • the user equipment may directly initiate a multiple access procedure in order to obtain uplink synchronization, or re-access after a radio link failure, or a new cell access after handover.
  • the trigger condition that requires multiple access may not be the trigger condition of the traditional access procedure.
  • the user equipment may also trigger or initiate a multiple access procedure under the control of the network.
  • the purpose of simultaneous access and measurement for multiple cells is achieved.
  • the content carried by the access device is different.
  • the access device sends the feedback information of the same content on the unified resource
  • the user equipment knows the subframe in which the feedback information is transmitted in advance, only the subframe needs to be received on the subframe. can. If the access device sends the feedback information of the same content on the unified resource, but the user equipment does not know the subframe in which the feedback information is transmitted in advance; or if the access device sends the feedback information on different resources.
  • the user equipment needs to receive feedback information of all or part of the access devices in response to the access request in a predetermined time window. Specifically, the user equipment continues to receive within a predetermined time window until the time window ends; or, when some feedback information received by the user equipment in the time window indicates that it is the last feedback information in the time window, then The user equipment stops receiving.
  • FIG. 2 is a schematic diagram of an implementation manner of an access method in a wireless network according to an embodiment of the present disclosure, which includes the following operations:
  • Step 200 The access device in the predetermined area receives the access request of the user equipment for the multi-cell on the multiple access resource.
  • Step 210 The at least one access device sends feedback information in response to the access request to the user equipment.
  • the access device receives subsequent uplink information of the user equipment, perform subsequent access interaction with the user equipment.
  • the method provided by the embodiment of the present application is configured with multiple access resources, and the user equipment may initiate an access request for multiple cells on multiple access resources.
  • a random access procedure is directed to multiple cells, and multiple random access procedures need not be separately initiated, thereby simplifying the signaling process, reducing signaling overhead, and reducing access delay. It can be seen that the technical solution provided by the embodiment of the present application improves access efficiency and user experience.
  • the user equipment needs to obtain the resource configuration information of the multiple access resources, so as to initiate an access request on the multiple access resources indicated by the resource configuration information.
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the foregoing access request may be that the at least two access devices in the predetermined area are sent on a unified resource, or may be the foregoing reservation.
  • the at least two access devices in the area are sent on the respective resources, and may also be sent by the macro access device in the predetermined area.
  • the multiple access device may send the foregoing resource configuration information by means of system broadcast, or may send the foregoing resource configuration information by means of dedicated signaling; or all accesses corresponding to multiple access resources in a predetermined area.
  • the device sends it, which can also be sent by some access devices.
  • the system broadcast mode may be sent at a frequency of a large coverage, for example, the system configuration information of the multiple access resources carried in the system message sent on the frequency point covered by the macro access device;
  • a continuous large coverage virtual cell composed of multiple access nodes covers the frequency of the IDLE mode (for example, multiple access nodes transmit the same system broadcast synchronously at the same frequency point, and the effect can be simulated as a virtual Sending system broadcasts at the cell frequency point, and simultaneously transmitting resource configuration information of multiple access resources in a broadcast manner; or at the coverage IDLE mode frequency point of each access node (the frequency points of the access nodes are not necessarily all Compatible carrier, that is, there may be some frequency points not transmitted).
  • the system broadcasts only the system broadcasts, and the transmission frequency of the transmission system is called the frequency of the coverage IDLE mode.
  • the resource configuration information of the multiple access resources is separately transmitted.
  • the so-called separate transmission means that the information such as the time-frequency resource to be transmitted may be independent, and synchronization is not required, but the transmitted
  • multiple multiple access resources are configured for the same predetermined area. That is, there are two or more of the above multiple access resources in the predetermined area.
  • an access device may be specified to receive the access request only on one multi-access resource, or may not be limited.
  • the access device when the access device receives the access request on a certain multiple access resource, the access device is referred to as the access device and corresponds to the multiple access resource.
  • each access device in the predetermined area may be configured to send resource configuration information of all multiple access resources, and each of the predetermined areas may also be specified.
  • the access devices only send resource configuration information of the corresponding multiple access resources.
  • the resource configuration information of each multiple access resource may be sent at different frequency points or may be sent at the same frequency point.
  • the access device that receives the access request may all send feedback information.
  • the feedback information content is the same, and in another case, the access is allowed to continue.
  • the feedback information fed back to the device is the same.
  • the feedback information fed back by the access device that is not allowed to access indicates that the access is denied.
  • the access device that receives the access request and meets certain conditions sends feedback information.
  • feedback The content of the information is the same; the centralized control node may control the device to determine which access device sends the feedback information.
  • the content of the feedback information is the same; or may be between the access devices that receive the access request.
  • the content of the feedback information is the same.
  • the access devices to which the cells of different access technologies belong may also send feedback information according to the requirements of the respective protocols.
  • a preferred implementation manner of step 210 is that at least one of the foregoing access devices sends the same feedback information to the user equipment in response to the access request on a unified resource; another preferred implementation manner is at least Each of the foregoing access devices respectively sends feedback information in response to the access request to the user equipment on respective resources.
  • the uniform resources used to send the feedback information are different from the unified resources used to transmit the resource configuration information.
  • the implementation of the process on the network side can be either centralized or distributed.
  • the access device that receives the access request also reports the access request to the centralized control node.
  • the implementation of step 210 is that the access device that receives the feedback indication of the centralized control node sends feedback information in response to the access request to the user equipment.
  • the centralized control node may be a macro base station within the predetermined range, or may be a device independent of the access device.
  • the access device may report the preamble used by the user equipment to the centralized control node.
  • the access device may report the foregoing access request that meets the predetermined condition to the centralized control node.
  • the measurement information and the preamble are also reported when the access request satisfies the predetermined condition.
  • the above-mentioned access request that meets the predetermined condition is reported to the centralized control node, which can reduce the amount of information processing when the centralized control node performs the decision, and improve the processing efficiency of the centralized control node.
  • the access device sends the feedback information in response to the access request to the user equipment by negotiation or according to a predetermined feedback rule.
  • FIG. 3 is a schematic diagram of an implementation manner of an access method in a wireless network according to an embodiment of the present disclosure, which includes the following operations:
  • Step 300 The central control node receives an access request for the multi-cell of the user equipment reported by the access device in the predetermined area, where the access request is received by the access device on the multiple access resource.
  • Step 310 The centralized control node determines the access device that responds to the access request.
  • Step 320 The centralized control node sends a feedback indication to the determined access device.
  • the access device that receives the feedback indication sends the feedback information in response to the access request to the user equipment, and performs subsequent access interaction with the user equipment.
  • the method provided by the embodiment of the present application is configured with multiple access resources, and the user equipment may initiate an access request for multiple cells on multiple access resources.
  • a random access procedure is directed to multiple cells, and multiple random access procedures need not be separately initiated, thereby simplifying the signaling process, reducing signaling overhead, and reducing access delay. It can be seen that the technical solution provided by the embodiment of the present application improves access efficiency and user experience. In addition, through centralized control, interference and collision between multiple cells can be reduced, and system maintenance is facilitated.
  • the access nodes In an ultra-dense network, the access nodes (APs: Access Point) are centrally managed and controlled by the local centralized service node (LSC: Local Service Centre).
  • LSC Local Service Centre
  • the backhaul link between the AP and the LSC When it is an ideal wired connection, that is, the transmission delay between the AP and the LSC is short (less than the order of milliseconds, even on the order of microseconds), and the transmission bandwidth is large (several Gbps or more), the LSC can be AP performs real-time control; Of course, it is also possible that the backhaul link between the AP and the LSC is not an ideal wired connection. The transmission delay and bandwidth do not reach the ideal condition. At this time, the LSC can still control the AP, but the strength of the control is weak. The cycle does not achieve real-time results, and some things that require immediate decision-making need to be delegated to the AP.
  • the AP In a centralized architecture, if the backhaul link between the AP and the LSC is ideal, the AP usually forwards the information received by itself and various measurements to the LSC node. After the LSC collects all the information, it runs. The centralized coordination algorithm performs decision on the feedback information content of each AP, and sends the feedback information content to the AP, which is executed by the AP. If the backhaul link between the AP and the LSC is not ideal, the AP usually forwards various requests and information that do not need immediate feedback to the LSC node, waits for the unified planning of the LSC, and then executes it, and for the request that needs immediate feedback, APs need to make reasonable decisions and feedback on their own according to the various information and strategies they have.
  • an access mode is a centralized access process of a centralized node.
  • the process of initiating multiple access is as follows:
  • Step zero When the UE enters the area covered by the centralized AP, the resource configuration information for initiating the multiple access request needs to be obtained first;
  • the resource configuration information of multiple access resources is uniformly planned by the LSC and transmitted in the form of cell broadcast.
  • a typical example is that the LSC controls a certain size of AP under the same frequency.
  • the resource configuration information of the same multi-access resource is broadcast and transmitted at the same time, and the UE can obtain the information by reading the broadcast mode after entering the coverage area; of course, in the resource configuration information of the multi-access resource, It can also carry the condition information that the local area is allowed to initiate multiple access. For example, the UE needs to support several frequency points at the same time, or which frequency points are supported at the same time, so that multiple UEs can be initiated. There is also a possibility that the resource configuration information of the multiple access resources is the same as the basic configuration information of the single access.
  • the UE decides which type of access to initiate according to its own capabilities, and indicates to the network side in the uplink signal. For example, if the UE only has the single-frequency point transmission and reception capability, the UE only initiates a single access procedure, and indicates to the network in a manner different from the multiple access in the uplink signal. Known.
  • Step 1 The UE that is allowed to initiate the multiple access condition is configured to send a multiple access request according to its own needs (ie, initiate a multiple access procedure), and the UE usually initiates an unscheduled transmission of the uplink signal according to the configuration requirement, and In order to reduce the probability of collision, certain random factors may be required.
  • Step 2 The AP around the UE performs uplink signal reception on the multiple access resources, and the AP that receives the multiple access request of the UE may directly directly measure the multiple access request and the basic received signal measurement information.
  • the report is reported to the LSC, and the multi-access request and the received signal measurement information that meet the predetermined condition (also referred to as the access condition) are reported to the LSC.
  • the receiving condition is to further filter the AP, for example, the receiving condition is defined as one or a combination of the following:
  • the received signal measurement information meets a certain threshold, that is, only the AP with sufficient channel conditions can serve the UE subsequently;
  • the load and capacity of the AP need to meet certain requirements.
  • the AP load is not high, and various coordination or cooperation algorithms are supported to facilitate subsequent transmission.
  • the information reported to the LSC may include one or a combination of the following:
  • Resource location information such as a time domain location and a frequency domain location of receiving the multiple access request
  • the specific random parameters selected by the UE are generally configured with some random parameters, such as a preamble, etc., in order to reduce the collision, and the UE may be randomly selected in the specified Preamble candidate set. Selecting, using UEs with different random parameters, even if the same resource location information is used, can be distinguished as two UEs;
  • Quality information of the received signal such as received signal strength, etc.
  • it may also carry some measurement information for the UE, such as propagation delay information of the UE, location information, more accurate measurement information, or current status information of the AP, such as load, etc., for centralized decision reference.
  • some measurement information for the UE such as propagation delay information of the UE, location information, more accurate measurement information, or current status information of the AP, such as load, etc.
  • Step 3 The LSC receives the information report from each AP, and considers the information together to determine which APs to feed back to the UE and sends the feedback result to the relevant AP.
  • the decision process can consider the following factors:
  • the top N APs with the best signal strength between the UEs are selected for feedback;
  • the AP According to the location of the reported AP and the a priori information such as the surrounding environment, it is better to have the location information of the UE, determine the location relationship, and use the most favorable positional relationship, combined with the signal strength and other information, to select feedback and subsequent services for the UE.
  • the AP for example, tries to select an AP that is closer to the UE or has a direct-view path, and avoids selecting an AP with an interval to reduce interference with other users and APs.
  • Step 5 The UE receives the feedback information from the AP.
  • the feedback information is an uplink resource allocated to the UE, and is used for the UE to subsequently transmit its own uplink information report and uplink data.
  • the uplink information report generally includes the uplink buffer status report and the subsequent competition. Solve the identity information of the carried UE, and the like.
  • the subsequent process (for example, the contention process, the data transmission process), the UE sends the information on the specified uplink resource, and the multiple APs on the network side receive the information, and the AP that meets the receiving condition reports the content, measurement information, and status information received by the AP to the LSC.
  • the feedback information is formed, and the AP participating in the transmission is designated, and the AP uniformly sends the feedback information to the UE.
  • the resource information may be included, for example, the resource configuration on the resource configuration 1 and the frequency point f2 at the frequency point f1. 2, can be simultaneously
  • the multiple APs are sent together to the UE, and the UE can follow the scheduling to transmit on the corresponding allocated resources.
  • the LSC determines which APs to jointly receive on each resource.
  • the method for the UE to initiate an uplink random access and establish association with multiple cells at the same time is beneficial to the UE to quickly use resources of multiple cells, and the simultaneous transmission of multiple cells and resources is beneficial to the combined reception of the UE, and improves the receiving quality.
  • the transmission of different resources of the cell facilitates the UE to transmit more content and improve the throughput and user experience.
  • multiple APs receive and cooperate at the same time, which is beneficial to determine the service set range of the UE according to the received signal situation, etc., and facilitate coordination of the overall situation, including coordinating resources and avoiding interference.
  • APs are simultaneously transmitted to improve reception quality and the like.
  • another access mode is a centralized access process of the centralized node.
  • the process of initiating multiple access is as follows:
  • Step zero When the UE enters the area covered by the centralized AP, the resource configuration information for initiating multiple access needs to be obtained first.
  • Step 1 The UE that is allowed to initiate the multiple access condition is configured to send a multiple access request according to its own needs (ie, initiate a multiple access procedure), and the UE usually initiates an unscheduled transmission of the uplink signal according to the configuration requirement, and In order to reduce the probability of collision, certain random factors may be required.
  • Step 2 The AP around the UE performs uplink signal reception on the configured multiple access resources, and the AP that receives the multiple access request of the UE can directly directly measure the multiple access request and the basic received signal measurement information. It is reported to the LSC, or the information and measurement results satisfying the predetermined condition (also called the receiving condition) are reported to the LSC.
  • the predetermined condition also called the receiving condition
  • Step 3 The LSC receives the information report from each AP, and considers the information together to determine which APs to feed back to the UE and sends the feedback result to the relevant AP.
  • the decision process of the LSC can refer to the previous embodiment.
  • the feedback content designed by the LSC for each AP is different, and the resource locations for sending feedback are also different, for example, feedback is performed at different times.
  • Step 5 The UE receives possible feedback information within a predetermined time window. It is noted that, in the case of unified feedback or single access, the UE receives a piece of feedback information, that is, the end of the step can be performed in the next step. In the embodiment in which the multiple APs respectively feed back, the UE needs to try to receive in the entire predetermined time window until the end of the time window, and receives several feedback information to process several feedback information, or in the case of unified control. In the last feedback, the end flag may be carried in the last feedback, and the UE reads the end flag, that is, confirms that there is no feedback afterwards, and the receiving may be ended, and then the subsequent process is performed.
  • the UE integrates the received feedback information, and the feedback information may include multiple resource configuration information, and the UE arranges subsequent uplink data transmission according to the location, size, timing, and the like of the multiple resource information, because the centralized architecture, the AP
  • the received uplink signaling and data are processed uniformly, so there is no need to send duplicate content unless it is guaranteed to be correct.
  • the AP still forwards the received information to the LSC, and the LSC determines the subsequent scheduling, and multiple APs provide multiple resources for the UE.
  • Scenario 2 In an ultra-dense network, there is no unified control node between APs. That is, LSCs do not exist. Each AP relies on its own algorithm and collection of surrounding conditions to make reasonable decisions about its own state and configuration. The reaction of the incident.
  • an access method is a distributed node unified access process.
  • the process of initiating multiple access is as follows:
  • Step zero When the UE enters the area covered by the distributed AP, the resource configuration information for initiating the multiple access request needs to be obtained first;
  • the operations of the APs are performed separately, coordination is required for some common configurations, and the generally coordinated node may be the OAM (Operation Administration and Maintenance) on the network side or Presets, etc.
  • OAM Operaation Administration and Maintenance
  • the various resource configuration information for initiating multiple accesses should be unified in one area (the reason why it needs to be unified is because each AP needs to be monitored. To avoid the complexity of the AP listening to too many resources, a certain degree of unification is required. The areas can be inconsistent. Therefore, you need to configure the APs in a unified manner, such as a macro station, or a separate broadcast mode for each AP.
  • Step 1 The UE that is allowed to initiate the multiple access condition is initiated, and the multiple access process is initiated according to the requirements of the UE.
  • the UE usually initiates the unscheduled transmission of the uplink signal according to the configuration requirements, and may need to be certain in order to reduce the collision probability. Random factors.
  • Step 2 The APs around the UE perform uplink signal reception on the multiple access resources, and the APs that receive the multiple access requests of the UE are processed by the APs.
  • the time of the feedback is bound to the initial transmission time, for example, the T+4 subframe, and the parameters of the resource allocation amateur initial transmission have a preset degree of association, so that multiple APs can feed back the same content for the UE at the same time;
  • the air interface is exchanged between the APs (the delay needs to be in the order of ms), that is, after the AP receives the access request from the UE, the air interface signaling interaction between the APs, the timing of the unified feedback, and the feedback content. .
  • Step 4 The UE receives the feedback information from the AP.
  • the feedback information is an uplink resource allocated to the UE, and is used for the UE to subsequently transmit its own
  • the uplink information is reported and the uplink data is reported.
  • the uplink information report generally includes the uplink buffer status report and the identity information of the carried UE for subsequent contention.
  • the feedback AP notifies the neighboring APs of the information.
  • the neighboring AP can continue to receive the uplink subsequent data of the UE, and the result is that an AP feedback.
  • the surrounding APs have indirectly completed the access of the UE.
  • another access mode is a separate access process of the distributed node.
  • the process of initiating multiple access is as follows:
  • Step zero When the UE enters the area covered by the distributed AP, the resource configuration information for initiating multiple access needs to be obtained first;
  • Step 1 The UE that is allowed to initiate the multiple access condition is initiated, and the multiple access process is initiated according to the requirements of the UE.
  • the UE usually initiates the unscheduled transmission of the uplink signal according to the configuration requirements, and may need to be certain in order to reduce the collision probability. Random factors.
  • Step 2 The APs around the UE perform uplink signal reception on the multiple access resources, and the APs that receive the multiple access requests of the UE are processed by the respective APs, so feedback can be separately performed according to the respective situations.
  • the content is planned and taken in a certain way to avoid sending feedback on the same resource, for example, having different random delays, or multiple resources for sending feedback.
  • Step 4 The UE receives possible feedback information within a predetermined time window. It is noted that, in the case of unified feedback or single access, the UE receives a piece of feedback information, that is, the end of this step can be performed in the next step. In the embodiment in which the multiple APs respectively feed back, the UE needs to try to receive in the entire predetermined time window until the time window ends, and after receiving several feedback information, several feedback information is processed, and then the subsequent process is performed.
  • the UE integrates the received feedback information, and the feedback information may include multiple resource configuration information, and the UE arranges subsequent uplink data transmission according to the location, size, timing, and the like of the multiple resource information, because it is a distributed architecture.
  • the UE may need to send the same uplink signaling information to multiple APs.
  • different content may be sent, and the APs may interact with related related content through air interface signaling.
  • the UE may also perform a multiple access procedure for different types of nodes.
  • the basic process is similar to the previous embodiment.
  • the UE first obtains the common resource and configuration information of multiple accesses, and then initiates an uplink access signal according to requirements, and receives, measures, and the like by multiple surrounding nodes, and then one or more nodes. Feedback is provided.
  • the resources used for feedback may need to be coordinated, and the feedback content may also need to be coordinated. Then the UE transmits on multiple nodes according to the configuration.
  • the embodiment of the present application further provides a user equipment, as shown in FIG. 4, including:
  • An access request sending module 401 configured to send an access request for multiple cells on multiple access resources
  • the access processing module 402 is configured to receive feedback information of the at least one access device in response to the access request.
  • the user equipment provided by the embodiment of the present application is configured with multiple access resources, and the user equipment may initiate an access request for multiple cells on multiple access resources.
  • a random access procedure is directed to multiple cells, and multiple random access procedures need not be separately initiated, thereby simplifying the signaling process, reducing signaling overhead, and reducing access delay. It can be seen that the technical solution provided by the embodiment of the present application improves access efficiency and user experience.
  • the access processing module 402 may perform subsequent access interaction with the access device according to the feedback information.
  • the user equipment is configured to send the resource configuration information of the multiple access resources that are required to be sent by the user equipment, where the at least two access devices in the predetermined area are sent on a unified resource;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by at least two access devices in a predetermined area on respective resources;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by a macro access device in a predetermined area.
  • the access processing module is configured to: receive, in a predetermined time window, feedback information of the at least one access device in response to the access request.
  • the embodiment of the present application further provides another access device, as shown in FIG. 5, including: a processor 500, a transceiver 510, and a memory 520.
  • the processor 500 is configured to read a program from the memory 520 and perform the following process:
  • the transceiver 510 is configured to receive and transmit data under the control of the processor 500;
  • the memory 520 is used to store data used by the processor 500 to perform operations.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 500 and various circuits of memory represented by memory 520.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 510 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 530 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.
  • the user equipment provided by the embodiment of the present application is configured with multiple access resources, and the user equipment can be used for multiple access resources.
  • An access request is initiated for multiple cells.
  • a random access procedure is directed to multiple cells, and multiple random access procedures need not be separately initiated, thereby simplifying the signaling process, reducing signaling overhead, and reducing access delay. It can be seen that the technical solution provided by the embodiment of the present application improves access efficiency and user experience.
  • the user equipment is configured to send the resource configuration information of the multiple access resources that are required to be sent by the user equipment, where the at least two access devices in the predetermined area are sent on a unified resource;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by at least two access devices in a predetermined area on respective resources;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by a macro access device in a predetermined area.
  • the processor 500 is specifically configured to read the program from the memory 520, and perform the following process: when receiving the feedback information of the at least one access device in response to the access request, based on the foregoing any user equipment embodiment:
  • the embodiment of the present application further provides an access device, as shown in FIG. 6, including:
  • the access request receiving module 601 is configured to receive, by the multi-access resource, an access request for the multi-cell of the user equipment;
  • the feedback information sending module 602 is configured to send, to the user equipment, feedback information that is responsive to the access request.
  • the access device provided by the embodiment of the present application is configured with multiple access resources, and the user equipment may initiate an access request for multiple cells on multiple access resources.
  • a random access procedure is directed to multiple cells, and multiple random access procedures need not be separately initiated, thereby simplifying the signaling process, reducing signaling overhead, and reducing access delay. It can be seen that the technical solution provided by the embodiment of the present application improves access efficiency and user experience.
  • the access device if the access device continues to receive the uplink signal sent by the user equipment, the access device performs subsequent access interaction with the user equipment.
  • the user equipment is configured to send the resource configuration information of the multiple access resources that are required to be sent by the user equipment, where the at least two access devices in the predetermined area are sent on a unified resource;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by at least two access devices in a predetermined area on respective resources;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by a macro access device in a predetermined area.
  • the feedback information sending module is configured to:
  • the access device further includes an access request reporting module, configured to report the access request to the centralized control node;
  • the feedback information sending module is configured to: after receiving the feedback indication of the centralized control node, send feedback information in response to the access request to the user equipment.
  • the feedback information sending module is configured to: send, by using the negotiation or according to a predetermined feedback rule, feedback information that is responsive to the access request to the user equipment.
  • the embodiment of the present application further provides an access device, as shown in FIG. 7, including:
  • the processor 700 the transceiver 710, and the memory 720.
  • the processor 700 is configured to read a program from the memory 720 and perform the following process:
  • the transceiver 710 is configured to receive and transmit data under the control of the processor 700;
  • the memory 720 is used to store data used by the processor 700 to perform operations.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 700 and various circuits of memory represented by memory 720.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 710 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 can store data used by the processor 700 in performing operations.
  • the access device provided by the embodiment of the present application is configured with multiple access resources, and the user equipment may initiate an access request for multiple cells on multiple access resources.
  • a random access procedure is directed to multiple cells, and multiple random access procedures need not be separately initiated, thereby simplifying the signaling process, reducing signaling overhead, and reducing access delay. It can be seen that the technical solution provided by the embodiment of the present application improves access efficiency and user experience.
  • the user equipment is configured to send the resource configuration information of the multiple access resources that are required to be sent by the user equipment, where the at least two access devices in the predetermined area are sent on a unified resource;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by at least two access devices in a predetermined area on respective resources;
  • the resource configuration information of the multiple access resources that the user equipment needs to learn to send the access request is sent by a macro access device in a predetermined area.
  • the processor 700 is configured to read the program from the memory 720, and perform the following process:
  • the processor 700 is further configured to: read the program from the memory 720, and perform the following process: reporting the access request to the centralized control node; and sending feedback information in response to the access request to the user equipment.
  • the processor 700 is configured to read the program from the memory 720, and perform the following process: after receiving the feedback indication of the centralized control node, sending feedback information in response to the access request to the user equipment.
  • the processor 700 when sending the feedback information in response to the access request to the user equipment, the processor 700 is configured to read the program from the memory 720, and perform the following process:
  • the feedback information in response to the access request is sent to the user equipment by negotiation or according to a predetermined feedback rule.
  • the embodiment of the present application further provides a centralized control node, as shown in FIG. 8, including:
  • the access request receiving module 801 is configured to receive an access request for the multi-cell of the user equipment reported by the access device in the predetermined area, where the access request is received by the access device on the multiple access resource;
  • the access control module 802 is configured to determine the access device that responds to the access request, and send a feedback indication to the determined access device.
  • the access device that receives the feedback indication sends feedback information in response to the access request to the user equipment, and performs subsequent access interaction with the user equipment.
  • the centralized control node provided by the embodiment of the present application is configured with multiple access resources, and the user equipment can initiate an access request for multiple cells on multiple access resources.
  • a random access procedure is directed to multiple cells, and multiple random access procedures need not be separately initiated, thereby simplifying the signaling process, reducing signaling overhead, and reducing access delay. It can be seen that the technical solution provided by the embodiment of the present application improves access efficiency and user experience. In addition, through centralized control, interference and collision between multiple cells can be reduced, and system maintenance is facilitated.
  • the embodiment of the present application further provides a centralized control node, as shown in FIG. 9, including: a processor 900, a transceiver 910, and a memory 920.
  • the processor 900 is configured to read a program from the memory 920 and perform the following process:
  • the transceiver 910 is configured to receive and transmit data under the control of the processor 900;
  • the memory 920 is used to store data used by the processor 900 to perform operations.
  • the bus architecture may include any number of interconnected buses and bridges, specifically by the processor 900.
  • the various circuits of the memory represented by one or more processors and memory 920 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 910 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 900 in performing operations.
  • the centralized control node provided by the embodiment of the present application is configured with multiple access resources, and the user equipment can initiate an access request for multiple cells on multiple access resources.
  • a random access procedure is directed to multiple cells, and multiple random access procedures need not be separately initiated, thereby simplifying the signaling process, reducing signaling overhead, and reducing access delay. It can be seen that the technical solution provided by the embodiment of the present application improves access efficiency and user experience. In addition, through centralized control, interference and collision between multiple cells can be reduced, and system maintenance is facilitated.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

La présente invention concerne un procédé et un dispositif d'accès dans un réseau sans fil. Le procédé comprend les étapes suivantes : un équipement d'utilisateur envoie une demande d'accès pour de multiples cellules sur une ressource d'accès multiple, et l'équipement d'utilisateur reçoit des informations renvoyées par au moins un dispositif d'accès en réponse à la demande d'accès, pour ensuite réaliser une interaction d'accès avec le dispositif d'accès. Dans les solutions techniques selon les modes de réalisation de la présente invention, une ressource d'accès multiple est attribuée, et un équipement d'utilisateur peut initier une demande d'accès pour de multiples cellules sur la ressource d'accès multiple. Un processus d'accès aléatoire implique de multiples cellules, et il n'est pas nécessaire d'initier de multiples processus d'accès aléatoire, ce qui permet de simplifier un processus de signalisation, et de réduire les surdébits de signalisation ainsi qu'un retard d'accès.
PCT/CN2016/087762 2015-07-03 2016-06-29 Procédé et dispositif d'accès dans un réseau sans fil Ceased WO2017005129A1 (fr)

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CN107105504B (zh) * 2016-02-19 2021-10-15 中兴通讯股份有限公司 一种系统接入的资源分配方法和装置
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WO2019061368A1 (fr) * 2017-09-29 2019-04-04 华为技术有限公司 Procédé et dispositif de communication
WO2020164026A1 (fr) * 2019-02-13 2020-08-20 Oppo广东移动通信有限公司 Procédé d'accès aléatoire, dispositif terminal, et dispositif de réseau
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