WO2017005129A1

WO2017005129A1 - Access method and device in wireless network

Info

Publication number: WO2017005129A1
Application number: PCT/CN2016/087762
Authority: WO
Inventors: 刘佳敏
Original assignee: 电信科学技术研究院
Priority date: 2015-07-03
Filing date: 2016-06-29
Publication date: 2017-01-12
Also published as: CN106332298A; CN106332298B

Abstract

Disclosed are an access method and device in a wireless network. The method comprises: a user equipment sends an access request for multiple cells on a multiple access resource, and the user equipment receives information fed back by at least one access device in response to the access request, to subsequently perform access interaction with the access device. In the technical solutions provided in embodiments of present application, a multiple access resource is allocated, and a user equipment may initiate an access request for multiple cells on the multiple access resource. One random access process involves multiple cells, and it is unnecessary to initiate multiple random access processes, thereby simplifying a signaling process, and reducing signaling overheads and an access delay.

Description

Access method and device in wireless network

The present application claims priority to Chinese Patent Application No. 201510388022.4, entitled "Access Method and Apparatus in a Wireless Network", filed on July 3, 2015, the entire contents of which are incorporated by reference. In this application.

Technical field

The present application relates to the field of wireless communications technologies, and in particular, to an access method and device in a wireless network.

Background technique

In the future development of mobile communication systems, in order to better meet the needs of users and greatly improve network capacity and throughput, more access nodes will be introduced, that is, ultra-dense networks in the future. In an ultra-dense network, there is a large intersection between the coverage of different access nodes. In addition, for heterogeneous network scenarios, or multiple radio access technology (RAT) network scenarios, there is also overlapping coverage.

In the above scenario, it is possible to have multiple layers of coverage for the location of the user. Further, there may be a need for users to access multiple cells. But currently, a random access procedure is only for one cell. According to the existing procedure, if the user needs to access multiple cells, the random access process needs to be initiated separately, so that the signaling process is complicated and the signaling overhead is large. Especially in the case of multi-cell co-frequency, users have to access multiple cells in a time-sharing manner, resulting in a longer access delay.

Summary of the invention

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.

The purpose of this application is achieved by the following technical solutions:

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.

Optionally, 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; or

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; or

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.

Optionally, the user equipment sends an access request for multiple cells on multiple access resources, including:

If multiple access conditions are met, the user equipment sends an access request for multiple cells on multiple access resources.

Optionally, 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.

Optionally, 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; or

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.

Optionally, 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; or

At least one of the access devices respectively sends feedback information in response to the access request to the user equipment on respective resources.

Optionally, after the access device in the predetermined area receives the access request of the user equipment for the multi-cell on the multiple access resources, the at least one access device sends a response to the user equipment. Before the access information of the access request, the method further includes: the access device that receives the access request reports the access request to the centralized control node;

And sending, by the at least one access device, feedback information, in response to the access request, to the user equipment, where the access device that receives the feedback indication of the centralized control node sends the information to the user equipment Responsive to feedback information of the access request.

Optionally, after the access device in the predetermined area receives the access request of the user equipment for the multi-cell on the multiple access resources, the at least one access device sends a response to the user equipment. Before the access information of the access request, 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.

Optionally, 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.

Optionally, 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.

Based on the same inventive concept as the method, 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.

Optionally, 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.

Based on the same inventive concept as the method, the embodiment of the present application further provides another access device, including:

Processor, transceiver, and memory.

The processor is used to read the program from memory and perform the following process:

Transmitting an access request for multiple cells on the multiple access resources by the transceiver;

Receiving, by the transceiver, feedback information of the at least one access device in response to the access request;

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.

Based on any of the foregoing user equipment embodiments, optionally, receiving, by the at least one access device, the access request When the feedback information is used, the processor is specifically used to read the program from the memory, and the following process is performed:

Receiving feedback information of the at least one access device in response to the access request within a predetermined time window.

Based on the same inventive concept as the method, the embodiment of the present application provides 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;

And a feedback information sending module, configured to send, to the user equipment, feedback information that is responsive to the access request.

Optionally, the feedback information sending module is configured to:

Sending feedback information in response to the access request to the user equipment on a unified resource, where the feedback information sent by the feedback information sending module of the access device in the predetermined area is the same; or

Sending feedback information in response to the access request to the user equipment on its own resources.

Optionally, 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.

Optionally, 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.

Based on the same inventive concept as the method, the embodiment of the present application further provides an access device, including:

Processor, transceiver, and memory.

Receiving, by the transceiver, an access request for the multi-cell of the user equipment on the multiple access resources;

Sending, by the transceiver, feedback information in response to the access request to the user equipment;

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.

Based on any of the foregoing access device embodiments, optionally, 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:

Sending feedback information in response to the access request to the user equipment on a unified resource, where the feedback information sent by the access device in the predetermined area is the same; or

Optionally, 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.

Optionally, 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.

Based on the same inventive concept as the method, 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.

Processor, transceiver, and memory.

Receiving, by the transceiver, 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;

Determining, by the transceiver, the feedback indication that is sent to the determined access device;

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.

DRAWINGS

FIG. 1 is a flowchart of a user equipment side method according to an embodiment of the present application;

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;

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.

detailed description

The embodiments of the present application are described in detail below with reference to the accompanying drawings.

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.

Afterwards, the user equipment performs subsequent access interaction with the access device according to the feedback information.

In this embodiment, the access device may be a macro access device or an access node (AP).

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.

In the foregoing embodiment of the present application, 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. Correspondingly, 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.

In order to reduce the collision probability of the multiple user equipments for the access request, based on any of the foregoing method embodiments, one solution is to configure two or more multiple access resources for the same predetermined area, and the user equipment is initiating. When accessing the request, 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).

It should be noted that when the user equipment is located at the edge of two predetermined areas, 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.

Based on any of the above method embodiments, the above step 100 is performed when multiple access conditions are met. In one aspect, the multiple access condition described in the embodiment of the present application refers to that the user equipment has multiple access capabilities. On the other hand, 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).

In the embodiment of the present application, the trigger condition for performing multiple access may be the same as the trigger condition of the traditional access procedure. For example, 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. For example, when the user equipment is in the connected state, but the data is not in the non-scheduled state for a period of time, and the user equipment is not configured with other resources for performing the uplink scheduling request, when the user equipment has uplink data to be sent, 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. For another example, 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. For example, when the current serving cell of the user equipment is not enough to meet the needs of the user equipment to transmit data, and the user equipment needs to be served by multiple cells at the same time, 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.

Correspondingly, corresponding to different trigger conditions, the content carried by the access device is different.

Based on any of the foregoing method embodiments, if the access device sends the feedback information of the same content on the unified resource, if 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. Then, in the above step 110, 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.

For the explanation of the predetermined area and the access device, reference may be made to the foregoing embodiment, and details are not described herein again.

Step 210: The at least one access device sends feedback information in response to the access request to the user equipment.

Then, if the access device receives subsequent uplink information of the user equipment, perform subsequent access interaction with the user equipment.

In the foregoing embodiment of the present application, 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. Correspondingly, 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. Specifically, 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.

For example, 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 content is the same within a predetermined range.

In order to reduce the collision probability of multiple user equipments for the access request, based on any of the foregoing method embodiments, 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.

For example, there are two multiple access resources within a predetermined area. In one case, all access devices in the predetermined area receive access requests initiated by the user equipment for multiple cells on the two multiple access resources. In another case, part of the access devices in the predetermined area receive an access request initiated by the user equipment for multiple cells on one of the multiple access resources, and some of the access devices receive the user equipment on another multiple access resource. For an access request initiated by a multi-cell, an access device may be specified to receive the access request only on one multi-access resource, or may not be limited.

In the embodiment of the present application, 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.

When there are two or more multiple access resources in the same predetermined area, 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.

When there are two or more multiple access resources in the same predetermined area, 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.

Based on any of the foregoing method embodiments, in the foregoing step 210, the access device that receives the access request may all send feedback information. In one case, 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. Optional, 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. Optionally, the content of the feedback information is the same; or may be between the access devices that receive the access request. Negotiate to determine which access device sends feedback information. Optionally, the content of the feedback information is the same. If the multiple access cells belong to different access technologies, 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. Correspondingly, 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.

It should be noted that the uniform resources used to send the feedback information are different from the unified resources used to transmit the resource configuration information.

Whether sending feedback information on a unified resource or sending feedback information on separate resources, access The implementation of the process on the network side can be either centralized or distributed.

If it is centralized, the access device that receives the access request also reports the access request to the centralized control node. Correspondingly, 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.

In the embodiment of the present application, the centralized control node may be a macro base station within the predetermined range, or may be a device independent of the access device.

Optionally, not only the foregoing access request is reported to the centralized control node, but the measurement information of the user equipment is reported to the centralized control node. Further, the access device may report the preamble used by the user equipment to the centralized control node.

For the centralized implementation, the access device may report the foregoing access request that meets the predetermined condition to the centralized control node. Correspondingly, 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.

If it is distributed, in the foregoing step 210, 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 technical solutions provided by the embodiments of the present application are described in detail below in conjunction with specific application scenarios.

Scenario 1: 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). 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.

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.

Based on the foregoing scenario 1, an access mode is a centralized access process of a centralized node. When the UE is in an area covered by a centralized AP, the process of initiating multiple access is as follows:

Step zero (UE): 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;

In general, 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 (UE): 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 (AP): 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. For example, 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, such as the random code or other random parameters used 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.;

If possible, 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.

Step 3 (LSC): 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.

In general, the decision process can consider the following factors:

In the reported AP, the top N APs with the best signal strength between the UEs are selected for feedback;

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.

Conditions such as load and resource availability of the selected AP are allowed, and there are no other conflicts.

Step 4 (AP): The AP that receives the feedback indication sends the feedback information to the UE on the unified resource according to the requirements of the LSC, and the feedback information sent by each AP is the same.

In particular, other reported APs that do not choose to send feedback range can also receive feedback information. The advantage is that other APs can perform certain control on this resource to avoid interference.

Step 5 (UE): The UE receives the feedback information from the AP. For the UE, because each AP sends the same content in a unified resource, it is only combined reception for the UE, and the received signal is better, and the UE receives the network from the network. After the feedback information of the side, in general, 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. After the LSC unified decision, 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.

In the whole process, whether it is the uplink resource configuration received by the UE in the fifth step or the subsequent uplink scheduling, 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 In a signaling, the multiple APs are sent together to the UE, and the UE can follow the scheduling to transmit on the corresponding allocated resources. On the network side, 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.

For the network side, 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.

Based on the foregoing scenario 1, another access mode is a centralized access process of the centralized node. When the UE is in the area covered by the centralized AP, the process of initiating multiple access is as follows:

Step zero (UE): When the UE enters the area covered by the centralized AP, the resource configuration information for initiating multiple access needs to be obtained first.

For a specific implementation manner, reference may be made to the description of the foregoing embodiment.

Step 2 (AP): 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 decision process of the LSC can refer to the previous embodiment. However, 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 4 (AP): The AP that receives the feedback indication sends feedback information to the UE on the specified resource according to the requirements of the LSC, and the feedback information sent by each AP is different.

Step 5 (UE): 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.

In the subsequent process, 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.

Based on the foregoing scenario 2, an access method is a distributed node unified access process. When the UE is in an area covered by a distributed AP, the process of initiating multiple access is as follows:

Step zero (UE): 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;

In a distributed network, although 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. 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 (UE): 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 (AP): 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; In another mode, 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 3 (AP): The AP that meets the feedback requirement sends the feedback information to the UE on the specified resource, and the feedback information sent by each AP is the same.

Step 4 (UE): The UE receives the feedback information from the AP. For the UE, because each AP sends the same content on the same resource, it is only combined reception for the UE, and the received signal is better, and the UE receives the network side. After the feedback information, in general, 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.

In the above process, it is also possible that only one AP feeds back the UE, and 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. However, the surrounding APs have indirectly completed the access of the UE.

Based on the foregoing scenario 2, another access mode is a separate access process of the distributed node. When the UE is in the area covered by the centralized AP, the process of initiating multiple access is as follows:

Step zero (UE): 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 2 (AP): 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 3 (AP): The APs that meet the feedback requirements send feedback information to the UEs on the respective resources, and the feedback information sent by each AP is different.

Step 4 (UE): 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. Of course, different content may be sent, and the APs may interact with related related content through air interface signaling.

In a situation where the network conditions are relatively complicated, such as a heterogeneous network or a multi-RAT network, 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.

Based on the same inventive concept as the method, 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.

In the embodiment of the present application, the access processing module 402 may perform subsequent access interaction with the access device according to the feedback information.

Based on the same inventive concept as the method, 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:

Transmitting an access request for multiple cells on the multiple access resources by the transceiver 510;

Receiving, by the transceiver 510, feedback information of the at least one access device in response to the access request, to perform subsequent access interaction with the access device;

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.

In FIG. 5, 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. For different user equipments, 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 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:

Based on the same inventive concept as the method, 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.

In the embodiment of the present application, 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.

Optionally, the feedback information sending module is configured to:

Optionally, the access device further includes an access request reporting module, configured to report the access request to the centralized control node;

Based on the same inventive concept as the method, 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:

Receiving, by the transceiver 710, an access request for the multi-cell of the user equipment on the multiple access resources;

Sending, by the transceiver 710, feedback information in response to the access request to the user equipment, so as to perform subsequent access interaction with the user equipment;

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.

Here, in FIG. 7, 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.

Based on any of the foregoing access device embodiments, optionally, when the user equipment sends feedback information in response to the access request, the processor 700 is configured to read the program from the memory 720, and perform the following process:

Optionally, 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.

Optionally, 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:

Based on the same inventive concept as the method, 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.

Based on the same inventive concept as the method, 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:

Receiving, by the transceiver 910, 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 corresponding multiple access resource;

Determining, by the transceiver 910, a feedback indication that is sent by the transceiver 910 to the determined access device, so that the access device that receives the feedback indication sends a response to the user equipment The feedback information of the access request, and performing subsequent access interaction with the user equipment;

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.

Wherein, in FIG. 9, 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.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, 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. Moreover, 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 present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

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.

While the preferred embodiment of the present application has been described, it will be apparent that those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be construed as including the preferred The embodiments and all changes and modifications that fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

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 method according to claim 1, wherein the user equipment is resource configuration information of the multiple access resources that need to be learned by sending the access request, where at least two access devices in a 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 sent by at least two access devices in a predetermined area on respective resources; or

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 method according to claim 1 or 2, wherein the user equipment sends an access request for the multi-cell on the multiple access resources, including:

If multiple access conditions are met, the user equipment sends an access request for multiple cells on multiple access resources.
The method according to claim 1 or 2, wherein the receiving, by the user equipment, the feedback information of the at least one access device in response to the access request comprises:

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 method according to claim 5, wherein the user equipment is resource configuration information of the multiple access resources that need to be learned to send the access request, and is at least two accesses in the predetermined area. The device is 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; or

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 method according to claim 5 or 6, wherein the at least one access device sends feedback information to the user equipment in response to the access request, including:

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; or

At least one of the access devices respectively sends a response to the user equipment to the user equipment on a respective resource. Seeking feedback.
The method according to claim 7, wherein after the access device in the predetermined area receives an access request for a multi-cell of the user equipment on the multiple access resource, the at least one access device Before the user equipment sends the feedback information in response to the access request, the method further includes: the access device that receives the access request reports the access request to the centralized control node;

And sending, by the at least one access device, feedback information, in response to the access request, to the user equipment, where the access device that receives the feedback indication of the centralized control node sends the information to the user equipment Responsive to feedback information of the access request.
The method according to claim 8, wherein the access device in the predetermined area after receiving an access request for a multi-cell of the user equipment on the multiple access resource, the at least one access device Before the user equipment sends the feedback information in response to the access request, 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 method according to claim 8, wherein the access device that receives the access request reports the access request to the centralized control node, including:

The access device that receives the access request reports the access request that meets the predetermined condition to the centralized control node.
The method according to claim 7, wherein the at least one access device sends feedback information in response to the access request to the user equipment, including:

At least one of the access devices transmits feedback information in response to the access request to the user equipment by negotiation or according to a predetermined feedback rule.
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.
A user equipment, comprising:

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 according to claim 13, wherein the user equipment is resource configuration information of the multiple access resources that need to be learned by sending the access request, and is at least two access devices in a predetermined area. 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 sent by at least two access devices in a predetermined area on respective resources; or

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 according to claim 13 or 14, wherein the access processing module is configured to:

Receiving feedback information of the at least one access device in response to the access request within a predetermined time window.
An access device, comprising:

An access request receiving module, configured to receive, by the multi-access resource, an access request for the multi-cell of the user equipment;

And a feedback information sending module, configured to send, to the user equipment, feedback information that is responsive to the access request.
The access device according to claim 16, wherein the user equipment is resource configuration information of the multiple access resources that need to be learned by sending the access request, and is at least two accesses in a predetermined area. The device is 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 sent by at least two access devices in a predetermined area on respective resources; or

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 device according to claim 16 or 17, wherein the feedback information sending module is configured to:

Sending feedback information in response to the access request to the user equipment on a unified resource, where the feedback information sent by the feedback information sending module of the access device in the predetermined area is the same; or

Sending feedback information in response to the access request to the user equipment on its own resources.
The access device according to claim 17, further comprising 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 access device according to claim 17, wherein the feedback information sending module is configured to:

The feedback information in response to the access request is sent to the user equipment by negotiation or according to a predetermined feedback rule.
A centralized control node, comprising:

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.