WO2022133785A1

WO2022133785A1 - Cell configuration method and device for mt of iab node

Info

Publication number: WO2022133785A1
Application number: PCT/CN2020/138568
Authority: WO
Inventors: 卓义斌; 刘菁; 朱元萍
Original assignee: 华为技术有限公司
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2022-06-30
Also published as: CN116326118A

Abstract

The present application relates to the technical field of communications. Disclosed are a cell configuration method and device for an MT of an IAB node. An IAB donor may first receive a measurement report from a first MT of a first IAB node, wherein the measurement report comprises a measurement result obtained by performing measurement on a signal of one or more cells by one or more second MTs, and the first IAB node comprises a first MT and one or more second MTs; then determines configuration information of a target cell of the one or more second MTs according to the measurement report, wherein a cell accessed by the first MT and the target cell of the one or more second MTs belong to DUs of different parent nodes of the first IAB node; and finally sends to the first MT the configuration information of the target cell of the one or more second MTs. The method can implement the access of different MTs on an IAB node to different parent nodes, thereby implementing a multi-path gain.

Description

Cell configuration method and device for MT of IAB node

technical field

The present application relates to the field of communication technologies, and in particular, to a cell configuration method and device for an MT of an IAB node.

Background technique

The fifth-generation mobile communication system (5th-generation, 5G) introduced the integrated access and backhaul (IAB) network technology, the access link and the backhaul link in the IAB network (backhaul link) all use wireless transmission solutions to avoid fiber deployment, thereby reducing deployment costs and improving deployment flexibility.

In an IAB network, an IAB node (IAB node) and a donor base station (donor gnodeb, DgNB) are included. The terminal-side device can access the IAB node, so the service data of the terminal-side device can be connected to the IAB donor base station by the IAB node through a wireless backhaul link for transmission. The IAB node can be composed of a mobile terminal (mobile termination, MT) part and a distributed unit (distributed unit, DU) part, wherein, when the IAB node faces its parent node, it can be regarded as user equipment, that is, the role of MT; when When the IAB faces its child nodes (the child node may be another IAB node, or a common UE), it can be regarded as a network device providing backhaul services for the child nodes, that is, a role of DU.

Since an IAB node may include multiple MTs, the physical locations of the multiple MTs may be very close to each other, and the cell measurement results obtained by each MT may be similar. Therefore, multiple MTs of the same IAB node may select the same cell to initiate a connection at the same time. access, or select a cell on the DU of the same parent node to initiate access. In either case, different MTs of the same IAB node will be connected to the same parent node DU, and multi-connection cannot be realized, so that the multi-path gain provided by multi-connection cannot be obtained.

SUMMARY OF THE INVENTION

The present application provides a cell configuration method and device for an MT of an IAB node, which can access different MTs on an IAB node to different parent nodes, thereby realizing the multi-path gain of the IAB node.

In the first aspect, an embodiment of the present application provides a cell configuration method for an MT of an IAB node. The method can be applied to an IAB host. During execution, the IAB host can first receive a measurement report from the first MT of the first IAB node. The measurement report includes measurement results obtained by one or more second MTs measuring the signals of one or more cells, and the first IAB node includes the first MT and the one or more second MTs; then According to the measurement report, the configuration information of one or more target cells of the second MT is determined, and the cell accessed by the first MT and the one or more target cells of the second MT belong to the first IAB node DUs of different parent nodes; and finally send the configuration information of one or more target cells of the second MT to the first MT.

It should be noted that, since the first MT of the first IAB node has established a connection with the IAB host, the first MT can exchange information with the IAB host. One or more second MTs among the one or more second MTs of the first IAB node measure one or more cell signals to obtain a volume result, and the one or more second MTs exchange data through the first IAB nodes The measurement result may be fed back to the first MT of the first IAB node. After the first MT feeds back the measurement results of each second MT to the IAB host, the IAB host determines the configuration information of the target cells of one or more second MTs according to the measurement results of each second MT. In addition, the cell accessed by the first MT and the target cells of one or more second MTs belong to DUs of different parent nodes of the first IAB node. In this way, one or more second MTs can refer to the configuration information of the target cell determined by the IAB host, and access the DU of the parent node of the first IAB node that is different from that of the first MT. In this way, the multi-path gain of different MTs on the IAB node can be realized, and the robustness of multi-routing can also be improved, and the data packet delay and packet loss caused by the failure or interruption of some backhaul links can be resisted. question.

In an optional manner, the IAB host receives a measurement configuration request from the first MT, and the measurement configuration request is used to request measurement configuration information for one or more of the one or more second MTs; The MT sends one or more measurement configuration information of the second MT, where the measurement configuration information instructs the second MT to measure signals of one or more cells.

It should be noted that the first MT sends a measurement configuration request, so that the IAB host determines which cells the second MT measures the signals of, and the second MT measures the signals of the cells in a targeted manner, avoiding the blind measurement and random search of the second MT. The situation of the surrounding cells appears, which reduces the data interaction and reduces the loss of power consumption at the same time.

In an optional manner, the measurement report is obtained by measuring one or more of the following information: a synchronization signal of one or more cells, a reference signal of one or more cells, and one or more beams of a cell.

In an optional manner, the measurement configuration information includes one or more of the following information: a measurement object (measurement object), a measurement identity (measurement identity), a measurement quantity configuration (quantity configuration), and a reporting configuration ( reporting configuration).

In a second aspect, an embodiment of the present application provides a cell configuration method for an MT of an IAB node, the method can be applied to an IAB host, and the IAB host can receive access configuration request information from a first MT of a first IAB node; The input configuration request information is used to request the configuration information of the target cell for the one or more second MTs, and the first IAB node includes the first MT and the one or more second MTs; then according to the access Configuration request information, which determines the configuration information of one or more target cells of the second MT, and the cells accessed by the first MT and the one or more target cells of the second MT belong to the first IAB node. DU of the parent node of the parent node; and finally send the configuration information of one or more target cells of the second MT to the first MT.

It should be noted that since the first MT of the first IAB node has established a connection with the IAB host, the first MT can exchange information with the IAB host. After the first MT sends one or more second MTs to the IAB host to request the configuration information of the target cell, the IAB host allocates different target cells that can establish connections for different second MTs, so that the first MT and one or more The second MT may access DUs of a different parent node of the first IAB node. In this way, one or more second MTs can refer to the configuration information of the target cell determined by the IAB host, and access the DU of the parent node of the first IAB node that is different from the first MT. In this way, the multi-path gain of different MTs on the IAB node can be realized, and the robustness of multi-routing can also be improved, and the data packet delay and packet loss caused by the failure or interruption of some backhaul links can be resisted. question.

In an optional manner, the configuration information of the target cell includes one or more of the following information: identification information of the second MT and one or more cell identification information corresponding to the identification information of the second MT or Carrier frequency information.

Including the identity of the second MT and the cell identity information or carrier frequency information corresponding to the identity of the second MT in the configuration information of the target cell enables each second MT to clearly know which second MT can access which cells.

In a third aspect, an embodiment of the present application provides a cell configuration method for an MT of an IAB node. The method is applied to a first IAB node. The first IAB node can receive broadcast information of DUs of multiple second IAB nodes. The broadcast information of the second IAB node includes: the DU identification information of the second IAB node, or the information of one or more cells included in the DU of the second IAB node; and then according to the broadcast information of multiple second IAB nodes, The multiple MTs of the first IAB node access different cells of the DUs of the second IAB node.

In this way, the first IAB node can acquire broadcast information of DUs of multiple second IAB nodes, and access the MT of the first IAB node to different cells of the DUs of the second IAB node according to the broadcast information. In this way, the multi-path gain of different MTs on the IAB node can be realized, and the robustness of multi-routing can also be improved, and the data packet delay and packet loss caused by the failure or interruption of some backhaul links can be resisted. question.

In a fourth aspect, an embodiment of the present application provides a cell configuration method for an MT of an IAB node, the method is applied to an IAB host, and the IAB host can receive access request information from one or more second MTs of the first IAB node; The access request information includes: the access identification information of the first MT of the first IAB node, the identification information of the candidate parent node of the second MT, and the first IAB node includes the first MT and one or more second MTs; The access identification information of an MT and the identification information of the candidate parent node of the second MT, determine that the identification information of the parent node establishing a connection with the first MT is the same as the identification information of the candidate parent node of the second MT; A connection is established with the DU of the candidate parent node of the second MT.

It should be noted that after the first MT establishes a connection with the parent node of the first IAB node, the IAB host will store the connection relationship of the first MT. When the second MT wants to access the candidate parent node, the IAB host will The access identification information of an MT determines whether the candidate parent node that the second MT wants to access is the parent node that the first MT has already accessed. If so, the second MT is prohibited from accessing the candidate parent node. The second MT accesses the candidate parent node.

In this way, the second MT of the first IAB node (that is, the MT that has not established the connection) can carry the access information of the first MT (that is, the MT that has established the connection) to initiate the access request information to the candidate parent node, and the IAB After acquiring the access request information, the host may determine whether to allow the second MT to access the candidate parent node according to the access identification information of the first MT and the identification information of the candidate parent node of the second MT. In this way, different MTs on the IAB node can be connected to different parent nodes, multi-path gain can be achieved, and the robustness of multi-routing can also be improved against data packets caused by failure or interruption of some backhaul links. Problems such as excessive delay and packet loss.

In an optional manner, the access identity information of the first MT includes one or more of the following: the identity information of the first MT, the identity information of the first IAB node, the Identification information of the DU of the first IAB node.

It should be noted that the access identification information of the first MT includes the identification information of the first MT, the identification information of the first IAB node, and the identification information of the DU of the first IAB node, so that the IAB host can determine the first MT and the second MT. Whether to access the same parent node.

In a fifth aspect, an embodiment of the present application provides a cell configuration method for an MT of an IAB node, and the method can be applied to a first IAB node, including: the first IAB node obtains the access of the first MT of the first IAB node information; the access information includes: address information of the second IAB node accessed by the first MT; sending an access request to the destination IAB node by the second MT carrying the address information of the second IAB node to enable all The destination IAB node determines whether the address information of the second IAB node is the same as the address information of the destination IAB node; the first IAB node includes the first MT and the one or more second MTs; , the access of the second MT is rejected, if not, the access of the second MT is allowed.

In this way, the second MT of the first IAB node (that is, the MT that has not established the connection) can carry the access information of the first MT (that is, the MT that has established the connection) to initiate access request information to the candidate parent node, and the candidate After acquiring the access request information, the parent node can determine whether to allow the access of the second MT according to the access information of the first MT. In this way, different MTs on the IAB node can be connected to different parent nodes, multi-path gain can be achieved, and the robustness of multi-routing can also be improved against data packets caused by failure or interruption of some backhaul links. Problems such as excessive delay and packet loss.

In an optional manner, the access information further includes one or more of the following: identification information of the first MT and address information of the first IAB node.

It should be noted that the access information of the first MT includes the identification information of the first MT and the address information of the first IAB node, so that the candidate parent node can determine whether the first MT and the second MT both access.

In a sixth aspect, an embodiment of the present application provides an apparatus for configuring a cell of an MT of an IAB node, including: a receiving unit configured to receive a measurement report from a first MT of a first IAB node, where the measurement report includes one or more first A measurement result obtained by two MTs measuring signals of one or more cells, the first IAB node includes the first MT and the one or more second MTs; a processing unit, configured to report according to the measurement report , determine the configuration information of the target cells of one or more second MTs, the cells accessed by the first MT and the target cells of the one or more second MTs belong to different parent nodes of the first IAB node The distributed unit DU; send the configuration information of one or more target cells of the second MT to the first MT.

In an optional manner, the processing unit is further configured to: receive a measurement configuration request from the first MT, where the measurement configuration request is used to request measurement configuration information for the one or more second MTs ; sending one or more measurement configuration information of the second MT to the first MT, the measurement configuration information instructing the second MT to measure the signals of one or more cells.

In an optional manner, the measurement configuration information includes one or more of the following information: a measurement object, a measurement identifier, a measurement quantity configuration, and a reporting configuration.

In a seventh aspect, an embodiment of the present application provides a cell configuration device for an MT of an IAB node, including: a receiving unit configured to receive access configuration request information from a first MT of a first IAB node; the access configuration request information for requesting configuration information of a target cell for the one or more second MTs, where the first IAB node includes the first MT and the one or more second MTs; a processing unit configured to Access configuration request information, to determine the configuration information of one or more target cells of the second MT, the cells accessed by the first MT and the one or more target cells of the second MT belong to the first IAB node Distributed unit DUs of different parent nodes; sending configuration information of one or more target cells of the second MT to the first MT.

In an eighth aspect, an embodiment of the present application provides a cell configuration device for an MT of an IAB node, including: a receiving unit configured to receive broadcast information of DUs of multiple second IAB nodes, and the broadcast information of each second IAB node includes: : DU identification information of the second IAB node, or information of one or more cells included in the DU of the second IAB node; a processing unit, configured to, according to the broadcast information of the multiple second IAB nodes, The multiple MTs of the first IAB node access different cells of the DUs of the second IAB node.

In a ninth aspect, an embodiment of the present application provides an apparatus for configuring a cell of an MT of an IAB node, including: a receiving unit configured to receive access request information from one or more second MTs of a first IAB node; The request information includes: the access identification information of the first MT of the first IAB node, the identification information of the candidate parent node of the second MT, and the first IAB node includes the first MT and the one or a plurality of second MTs; a processing unit for, according to the access identification information of the first MT and the identification information of the candidate parent node of the second MT, according to the access identification information of the first MT and the second MT The identification information of the candidate parent node, determine that the identification information of the parent node connecting with the first MT is the same as the identification information of the candidate parent node of the second MT; And prohibit the second MT and the candidate parent node of the second MT from being identified. DU establishes a connection with.

In a tenth aspect, an embodiment of the present application provides an apparatus for configuring a cell of an MT of an IAB node, including: a transceiver unit configured to acquire access information of a first MT of the first IAB node; the access information includes: address information of the second IAB node accessed by the first MT; a processing unit, configured to send an access request to the destination IAB node by the second MT carrying the address information of the second IAB node to make the destination IAB node Determine whether the address information of the second IAB node is the same as the address information of the destination IAB node; the first IAB node includes the first MT and the one or more second MTs; if so, reject all The second MT is allowed to access, if not, the second MT is allowed to access.

In an eleventh aspect, the present application provides a communication device including a processor and a memory; the memory is used to store computer-executed instructions, and when the device is running, the processor executes the computer-executed instructions stored in the memory, so that the The apparatus performs the method of the first aspect or the embodiments of the first aspect, or the method of the second aspect or the embodiments of the second aspect, or the method of the third aspect or the embodiments of the third aspect, or the method of the third aspect or the embodiments of the third aspect. The method of the fourth aspect or embodiments of the fourth aspect, or the method of the fifth aspect or embodiments of the fifth aspect.

In a twelfth aspect, the embodiments of the present application further provide a computer-readable storage medium, where computer-readable instructions are stored in the computer-readable storage medium, and when the computer-readable instructions are executed on a computer, the computer Performing a method as in the first aspect or embodiments of the first aspect, or the second aspect or embodiments of the second aspect, or the third aspect or embodiments of the third aspect, or the fourth aspect Or the method of various embodiments of the fourth aspect, or the fifth aspect or the method of various embodiments of the fifth aspect.

In a thirteenth aspect, the present application provides a computer program product comprising instructions that, when run on a computer, cause the computer to perform the method of the first aspect or the embodiments of the first aspect, or the second aspect or the second aspect The method of various embodiments of the aspect, or the third aspect or various embodiments of the third aspect, or the fourth aspect or various embodiments of the fourth aspect, or the fifth aspect or various embodiments of the fifth aspect Methods.

In a fourteenth aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor, and may further include a memory, for implementing the first aspect or the method of each embodiment in the first aspect, or the second aspect or the method of various embodiments of the second aspect, or the third aspect or various embodiments of the third aspect, or the fourth aspect or various embodiments of the fourth aspect, or the fifth or fifth aspect Methods of various embodiments. The chip system can be composed of chips, and can also include chips and other discrete devices.

In a fifteenth aspect, an embodiment of the present application provides a communication system, where the system includes a terminal device and a network device, where the terminal device is configured to execute the method of the first aspect or the embodiments of the first aspect, or the first aspect. The method of the second aspect or embodiments of the second aspect, or the third aspect or embodiments of the third aspect, or the fourth aspect or embodiments of the fourth aspect, or the fifth aspect or the fifth aspect The method of various embodiments of the aspect.

A sixteenth aspect provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect or the embodiments of the first aspect, or the second aspect or the second aspect The method of each embodiment of the method.

For the technical effects that can be achieved by the sixth aspect to the sixteenth aspect, please refer to the description of the technical effects that can be achieved by the corresponding possible design solutions in the first aspect to the fifth aspect, which will not be repeated here in this application.

Description of drawings

Fig. 1 shows the connection diagram of a kind of IAB node;

FIG. 2 shows a schematic diagram of a system architecture provided by an embodiment of the present application;

Fig. 3 shows the schematic diagram that the IAB node 2 initiates initial access to the IAB host and the core network through the IAB node 1 as a relay;

4 shows a schematic flowchart of a cell configuration method for an MT of an IAB node provided by an embodiment of the present application;

5 shows a schematic flowchart of a cell configuration method for an MT of an IAB node provided by an embodiment of the present application;

6 shows a schematic flowchart of a cell configuration method for an MT of an IAB node provided by an embodiment of the present application;

7 shows a schematic flowchart of a cell configuration method for an MT of an IAB node provided by an embodiment of the present application;

8 shows a schematic flowchart of a cell configuration method for an MT of an IAB node provided by an embodiment of the present application;

9 shows a schematic flowchart of a cell configuration method for an MT of an IAB node provided by an embodiment of the present application;

FIG. 10 shows a schematic structural diagram of an apparatus for configuring a cell of an MT of an IAB node provided by an embodiment of the present application;

FIG. 11 shows a schematic structural diagram of an apparatus for configuring a cell of an MT of an IAB node provided by an embodiment of the present application;

12 shows a schematic structural diagram of an apparatus for configuring a cell of an MT of an IAB node provided by an embodiment of the present application;

FIG. 13 shows a schematic structural diagram of an apparatus for configuring a cell of an MT of an IAB node provided by an embodiment of the present application;

FIG. 14 shows a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 15 shows a schematic structural diagram of a CU-DU apparatus provided by an embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. The specific operation methods in the method embodiments may also be applied to the apparatus embodiments or the system embodiments. Wherein, in the description of the present application, unless otherwise specified, the meaning of "plurality" is two or more.

Compared with the fourth-generation mobile communication system, 5G has put forward more stringent requirements for various performance indicators of the network. For example, the capacity index has been increased by 1000 times, wider coverage requirements, ultra-high reliability and ultra-low latency, etc. Considering the abundance of high-frequency carrier frequency resources, it is becoming more and more common to use high-frequency cell network for communication transmission in hotspot areas. High-frequency carriers have poor propagation characteristics, are severely attenuated by occlusion, and have limited coverage. Therefore, a large number of high-frequency small stations need to be deployed intensively. However, it is very expensive to provide optical fiber backhaul for these densely deployed small stations, and the construction is difficult. , so an economical and convenient backhaul solution needs to be introduced. In addition, to provide network coverage in some remote areas, the deployment of optical fibers is difficult and costly, and flexible and convenient access and backhaul solutions need to be designed. The IAB technology came into being, and its access link (Access Link) and backhaul link (Backhaul Link) both use wireless transmission solutions, avoiding fiber deployment and reducing equipment costs.

However, when the existing IAB technology is applied, it mainly involves the IAB node and the donor base station. The terminal-side device can access the IAB node, so the service data of the terminal-side device can be connected to the IAB donor base station by the IAB node through a wireless backhaul link for transmission. Usually an IAB node can be composed of an MT part and a DU part. When the IAB node faces its parent node, it can be regarded as a user equipment, that is, the role of the MT; when the IAB node faces its child node (the child node may be another IAB node) , or ordinary UE), it can be regarded as a network device that provides backhaul services for the child nodes, that is, the role of DU. Referring to FIG. 1 , one IAB node may include multiple MTs, such as MT1 , MT2 and MT3 as shown in FIG. 1 . However, different MTs may be connected to the same parent node. For example, both MT1 and MT2 may be connected to the parent node IAB1. In this way, the multi-path gain of the IAB network cannot be realized. This application is proposed to realize the multi-path gain. Program.

Next, a communication system architecture to which the present application may be applied will be described with reference to FIG. 2 . As shown in FIG. 2 , the communication system includes a core network device 210 , a radio access network device 220 , a wireless backhaul device 230 and at least one terminal device (such as the terminal device 240 and the terminal device 250 in FIG. 2 ). The terminal device is wirelessly connected to the wireless backhaul device, and is connected to the wireless access network device through one or more wireless backhaul devices (some terminal devices can also be directly connected to the wireless access network device wirelessly). The access network equipment is connected with the core network equipment in a wireless or wired manner. The core network device and the radio access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the radio access network device can be integrated on the same physical device, or they can be one physical device. It integrates the functions of some core network equipment and some functions of the wireless access network equipment. Terminal equipment can be fixed or movable. The embodiments of the present application do not limit the number of core network devices, wireless access network devices, wireless backhaul devices, and terminal devices included in the mobile communication system.

The wireless access network device (that is, the IAB host base station in the background art) is the access device that the terminal device or the wireless backhaul device wirelessly accesses to the mobile communication system, and can be a base station (NodeB), an evolved base station (eNodeB), base station in 5G mobile communication system (gNodeB), base station in future mobile communication system, or access node in WiFi system, etc. The device form is not limited.

A terminal device may also be referred to as a terminal (Terminal), a user equipment (UE), a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), and the like. The terminal device can be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal device, industrial control (industrial control) wireless terminals in ), wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety Wireless terminals, wireless terminals in smart cities, wireless terminals in smart homes, and so on.

A wireless backhaul device can provide backhaul services to its child nodes. Specifically, it may be a relay node in an LTE system, an IAB node in a 5G system, or other devices capable of providing wireless relay functions.

Radio access network equipment, wireless backhaul equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle; can also be deployed on water; can also be deployed in the air on aircraft, balloons and artificial satellites. The embodiments of the present application do not limit the application scenarios of the wireless access network device, the wireless backhaul device, and the terminal device.

Wireless links between devices can communicate through licensed spectrum, unlicensed spectrum, or both licensed and unlicensed spectrum. The wireless link between devices can communicate over the spectrum below 6 gigahertz (GHz), over the spectrum above 6 GHz, and simultaneously using the spectrum below 6 GHz and above 6 GHz. The embodiments of the present application do not limit the spectrum resources used by the wireless link.

In order to better illustrate the solution of the present application, a process of establishing a connection between an MT of an IAB node and a DU of its parent node is briefly described first with reference to FIG. 3 . FIG. 3 shows an IAB node 1 , an IAB node 2 , an IAB host and a core network, where the IAB node 2 is a child node of the IAB node 1 . In stage 1, the MT of the IAB node 2 performs random access to the DU of the IAB node 1, and establishes a radio resource control (RRC) connection with the IAB host and obtains the authentication of the core network. Phase 2, establish the initial default backhaul RLC control channel (backhaul radio link control channel, BH RLC CH) between IAB node 2 and IAB node 1, wherein the BH RLC CH is used to transmit the data sent by IAB node 2 or arriving at IAB node 2 For F1-C or non-F1 data packets, similarly, a BH RLC CH should be established between the IAB node 1 and the IAB host or an existing BH RLC CH should be modified to transmit the above message. At this stage, the IAB node 2 also obtains the identification information or BAP address of the MT of the IAB node 2 and the routing identifier of the backhaul adaptation protocol required for the initial uplink transmission from the centralized unit (centralized unit, CU) of the IAB host. (backhaul adaptation protocolroutingidentity, BAP routing ID). In stage 3, the CU of the IAB host creates a route between the IAB node 2 and the IAB host DU. For example, the downlink transmission mapping rule is configured to the IAB host-DU, and the routing table is configured to the intermediate IAB node. And, optionally, the IAB node 2 may also obtain its own IP address from the CU, and establish a connection between the DU of the IAB node 2 and the IAB host.

In order to realize the multi-path gain of the IAB node, the present application provides various implementations, and the following describes the different implementations.

Manner 1: The MT in the IAB node that has established the communication connection assists the MT that has not established the communication connection in the IAB node to establish the communication connection with the DU of the parent node.

It should be noted that, an MT that has established a communication connection may establish a communication connection with reference to the manner shown in FIG. 3 . Next, the first IAB node is used as an example to describe the node that needs to establish a communication connection. The first IAB node includes a first MT and one or more second MTs, wherein the first MT is an MT that has established a communication connection, and the The second MT is an MT that has not established a communication connection. In actual implementation, the implementation can be divided into the following three situations, but the following three situations are not limited in practical application, and other situations related to the following situations are also applicable to this application.

Scenario 1:

It can be performed by referring to the schematic flowchart of the cell configuration method of the MT of the IAB node shown in FIG. 4 , and FIG. 4 shows the first IAB node and the IAB host. Wherein, the first IAB node includes: one first MT and two second MTs. However, in practical application, the present application does not specifically limit the number of second MTs in the first IAB. The following operations performed by the second MT are similar, and only one is used as an example for illustration, and the operations performed by the other second MTs will not be repeated.

Step 401: The first MT of the first IAB node obtains a measurement report of the second MT, where the measurement report includes measurement results obtained by one or more second MTs measuring the signals of one or more cells.

It should be noted that this step is the process of the internal data exchange of the first IAB node. In actual application, this step is not seen. The measurement report may be obtained by the first MT actively from the second MT, or it may be is actively sent by the second MT. In practical application, the present application does not specifically limit how the first MT obtains the measurement report of the second MT. In FIG. 4 , only step 400: the second MT actively sends the measurement report is illustrated. It should be noted that when the MTs in the first IAB node perform data exchange, if an internal communication interface is defined between the MTs, they can communicate through the internal communication interface. Repeat.

In addition, it should be noted that the measurement report can be understood as a measurement obtained by the second MT measuring the synchronization signal of one or more cells, or the reference signal of one or more cells, or the beam of one or more cells result. The second MT can accurately determine which cells have better signal quality by measuring the above-mentioned signals. In addition, the second MTs in the first IAB node may all send measurement reports to the first MT, or some of the second MTs may send measurement reports to the first MT. This application does not specifically limit sending measurement reports to the first MT. The number of second MT.

In addition, for the measurement reports of different second MTs, the identification of the MT (the identification may be a logical identification or a physical identification, which is not specifically limited in this application) can be sent to the first MT so that the first MT can learn the measurement report. Which second MT belongs to.

Step 402: The first MT sends a measurement report to the IAB host.

Step 403: After receiving the measurement report from the first MT of the first IAB node, the IAB host determines, according to the measurement report, the configuration information of one or more target cells of the second MT, the cell accessed by the first MT and one or more target cells. The target cells of the plurality of second MTs belong to DUs of different parent nodes of the first IAB node.

Step 404: The IAB host sends the configuration information of one or more target cells of the second MT to the first MT.

It should be noted that, for different second MTs, the IAB host can configure different target cell lists, so that the second MT can access different cells according to the cell list (the cell is located in the DU of the first IAB node that is not the parent node). under the jurisdiction). In addition, for the configuration information of the target cells of different second MTs, the identification of the MT can be carried (the identification may be a logical identification or a physical identification, which is not specifically limited in this application), so that the second MT can learn the configuration of the target cell. Which second MT the information belongs to.

In addition, it should be noted that even if the second MT feeds back the measurement report to the IAB host through the first MT, the IAB host can also choose whether to configure the configuration information of the target cell for the second MT according to the requirements, for example, the first IAB node Both of the two second MTs have fed back measurement reports, but the IAB host can choose one to configure the configuration information of the target cell, or both can configure the configuration information of the target cell. This application does not specifically limit which second MTs the IAB host is. Configure the configuration information of the target cell.

Step 405: The first MT forwards the configuration information of one or more target cells of the second MT to the second MT.

It should be noted that step 405 is also the communication between the MTs between the first IAB nodes, which may be described with reference to step 401, and will not be repeated here.

Step 406: The second MT establishes a communication connection with the DU of the parent node of the different first IAB node by referring to the configuration information of the target cell.

It should be noted that, since the first MT of the first IAB node has established a connection with the IAB host, the first MT can exchange information with the IAB host. One or more second MTs of the first IAB node measure one or more cell signals to obtain measurement results, and one or more second MTs can feed back the measurement results to the first IAB through data exchange between the first IAB nodes The first MT of the node. After the first MT feeds back the measurement results of each second MT to the IAB host, the IAB host determines the configuration information of the target cells of one or more second MTs according to the measurement results of each second MT. In addition, the cell accessed by the first MT and the target cells of one or more second MTs belong to DUs of different parent nodes of the first IAB node. In this way, one or more second MTs can refer to the configuration information of the target cell determined by the IAB host, and access the DU of the parent node of the first IAB node that is different from the first MT. In this way, the multi-path gain of different MTs on the IAB node can be realized, and the robustness of multi-routing can also be improved, and the data packet delay and packet loss caused by the failure or interruption of some backhaul links can be resisted. question.

Scenario 2 :

It can be performed by referring to the schematic flowchart of the cell configuration method of the MT of the IAB node shown in FIG. 5 , and FIG. 5 shows the first IAB node and the IAB host. Wherein, the first IAB node includes: one first MT and two second MTs. However, in practical application, the present application does not specifically limit the number of second MTs in the first IAB. The following operations performed by the second MT are similar, and only one is used as an example for illustration, and the operations performed by the other second MTs will not be repeated.

Step 501: The first MT of the first IAB node obtains a measurement configuration request of the second MT, where the measurement configuration request is used to request measurement configuration information for one or more second MTs.

It should be noted that the measurement configuration information includes one or more of the following information: a measurement object (measurement object), a measurement identity (measurement identity), a measurement quantity configuration (quantity configuration), and a reporting configuration (reporting configuration).

The measurement object refers to one frequency point or multiple frequency points. In the measurement object configuration, the CU of the IAB host will inform the MT of the necessary information required when measuring any frequency point, such as the configuration of the measurement resources on the frequency point, the cell list on the frequency point, etc. In the reporting configuration, the CU of the IAB host informs the MT of specific measurement matters to be paid attention to, such as the type of measurement, the reporting trigger method, and the reporting format. A measurement identifier is a combination of a measurement object and a report configuration information, and various precautions for the measurement of a measurement object can be determined in this way. In addition, it should be noted that any measurement object or reporting configuration can be associated with any one or more or zero reporting configurations or measurement objects that have the same radio access technology (RAT) type.

The measurement quantity configuration refers to the configuration for the layer 3 filter coefficients (wherein the layer 3 filter coefficients are). It should be noted that, before triggering the measurement to verify whether the reporting trigger conditions are met, and before reporting the measurement is finally reported, layer 3 filtering needs to be performed first, and the coefficient of layer 3 filtering is notified to the MT through the measurement configuration. The method can make the measurement result smoother and the measurement report more accurate.

It should be noted that if intra-frequency or inter-frequency or inter-system measurement involves switching the center frequency, it cannot be performed simultaneously with data transmission, and the network needs to configure a measurement interval for it.

In addition, for the measurement configuration requests of different second MTs, the identification of the MT can be carried (the identification may be a logical identification or a physical identification, which is not specifically limited in this application) and sent to the first MT, so that the first MT learns To which second MT the measurement configuration request belongs.

Step 502: The first MT sends a measurement configuration request to the IAB host.

Step 503: After receiving the measurement configuration request from the first MT, the IAB host sends one or more measurement configuration information of the second MT to the first MT, where the measurement configuration information instructs the second MT to perform the measurement on the signals of one or more cells. Measurement.

Step 504: The first MT forwards the measurement configuration information to the second MT.

Step 505: The second MT measures the signals of one or more cells according to the measurement configuration information to obtain a measurement report.

Step 506: The first MT of the first IAB node obtains a measurement report sent by the second MT, where the measurement report includes measurement results obtained by one or more second MTs measuring signals of one or more cells.

It should be noted that, in the above steps, in the process of internal data exchange between the first MT and the second MT of the first IAB node, in actual application, the measurement configuration request and the measurement report may be the first MT actively sends the data from the second MT. The obtained data may also be actively sent by the second MT, which is not specifically limited in this application. In FIG. 5, only step 500: the second MT actively sends the measurement configuration request, and step 505A: the second MT actively sends The measurement report is indicated.

In addition, it should be noted that the measurement report can be understood as the second MT performing the synchronization signal of one or more cells in the measurement configuration information, or the reference signal of one or more cells, or the beam of one or more cells. Measured results.

Step 507: The first MT sends a measurement report to the IAB host.

Step 508: After receiving the measurement report from the first MT of the first IAB node, the IAB host determines, according to the measurement report, the configuration information of one or more target cells of the second MT, the cell accessed by the first MT and one or more target cells. The target cells of the plurality of second MTs belong to DUs of different parent nodes of the first IAB node.

Step 509: The IAB host sends the configuration information of one or more target cells of the second MT to the first MT.

In addition, for the configuration information of the target cells of different second MTs, the identification of the MT can be carried (the identification may be a logical identification or a physical identification, which is not specifically limited in this application), so that the second MT can learn the configuration of the target cell. Which second MT the information belongs to.

Step 510: The first MT forwards the configuration information of one or more target cells of the second MT to the second MT.

Step 511: The second MT refers to the configuration information of the target cell to establish a communication connection with the DU of the parent node of the different first IAB node.

It should be noted that the first MT sends a measurement configuration request, so that the IAB host determines which cells the second MT measures the signals of. The second MT measures the signals of the cells in a targeted manner, which avoids the situation where the second MT randomly searches for surrounding cells through blind measurement, reduces data interaction, and reduces power consumption losses. In this way, one or more second MTs can refer to the configuration information of the target cell determined by the IAB host, and access the DU of the parent node of a different first IAB node from that of the first MT, so that different MTs on the IAB node can be connected. multiple gain. This method can also improve the robustness of multi-routing, and combat problems such as excessive packet delay and packet loss caused by failure or interruption of some backhaul links.

Scenario 3 :

It can be performed by referring to the schematic flowchart of the cell configuration method of the MT of the IAB node shown in FIG. 6 , and FIG. 6 shows the first IAB node and the IAB host. Wherein, the first IAB node includes: one first MT and two second MTs. However, in practical application, the present application does not specifically limit the number of second MTs in the first IAB. The following operations performed by the second MT are similar, and only one is used as an example for illustration, and the operations performed by the other second MTs will not be repeated.

Step 601: The first MT of the first IAB node obtains the access configuration request information of the second MT, where the access configuration request information is used to request the configuration information of the target cell for one or more second MTs.

It should be noted that this step is an internal data exchange process of the first IAB node. In actual application, this step will not be seen. The access configuration request information may be actively obtained by the first MT from the second MT. , it can also be sent actively by the second MT. This application does not specifically limit how the first MT obtains the configuration request information of the second MT in practical application. In FIG. 4, only step 600 is used: the second MT actively sends the access configuration Request information for illustration.

In addition, for the configuration request information of different second MTs, the identification of the MT can be carried (this identification may be a logical identification or a physical identification, which is not specifically limited in this application, so that the first MT learns which first MT the configuration request information belongs to). Two MT.

Step 602: The first MT sends access configuration request information to the IAB host.

Step 603: After receiving the access configuration request information from the first MT, the IAB host determines the configuration information of one or more target cells of the second MT according to the access configuration request information. The one or more target cells of the second MT belong to the distributed unit DUs of different parent nodes of the first IAB node.

Step 604: The IAB host sends the configuration information of one or more target cells of the second MT to the first MT.

Step 605: The first MT forwards the configuration information of one or more target cells of the second MT to the second MT.

Step 606: The second MT establishes a communication connection with the DU of the parent node of the different first IAB node by referring to the configuration information of the target cell.

It should be noted that the configuration information of the target cell may include one or more of the following information: identification information of the MT and one or more cell identification information or carrier frequency information corresponding to the identification information of the MT, so that the second The MT clearly knows which MT can access which cells.

It should be noted that after obtaining the access configuration request information of the second MT, the IAB host can configure the target cell configuration information governed by the DUs of different parent nodes for different second MTs, so that the second MT can refer to the target cell configuration. The information is communicated with DUs of different parent nodes. For example, the first MT sends the access configuration request information of the second MT to the IAB host, and the IAB allocates and configures the configuration information of different target cells for the two second MTs, wherein, One second MT corresponds to target cell list 1 (cell 1, cell 2, cell 3); another second MT corresponds to target cell list 2 (cell 4, cell 5, cell 6); among them, target cell list 1 and target cell list List 2 is governed under the DU of the parent node of the different first IAB.

In this way, one or more second MTs can refer to the configuration information of the target cell determined by the IAB host, and access the DU of the parent node of the first IAB node that is different from the first MT. This method can not only realize the multi-path gain of different MTs on the IAB node, but also improve the robustness of multi-routing, against the excessive delay and packet loss caused by the failure or interruption of some backhaul links. question.

Mode 2: Establish a communication connection between the MT in the IAB node and the DU of the parent node IAB by receiving the broadcast information of the parent node.

It should be noted that the second IAB node is the parent node of the first IAB node, and the first IAB node includes multiple MTs. Referring to the cell configuration method of the MT of the IAB node shown in FIG. 7 , any first IAB node may establish a communication connection with the DU of a different second IAB node by referring to the following steps.

Step 701: Receive broadcast information of DUs of multiple second IAB nodes, where the broadcast information of each second IAB node includes: DU identification information of the second IAB node, or one or more cells included in the DU of the second IAB node Information.

It should be noted that two second IAB nodes are also shown in FIG. 7 , and before step 701 is executed, the two second IAB nodes can execute step 700 : send broadcast information. The broadcast information sent by the second IAB is sent by broadcast, and is not limited to being sent only to the first IAB node, as long as the IAB nodes within the broadcast range of the second IAB node can receive the broadcast information of the second IAB node.

In addition, it should be noted that the broadcast information carries DU identification information of the second IAB node, or information of one or more cells included in the DU of the second IAB node, so that the first IAB node can learn the source of the broadcast information. In addition, it should also be noted that the broadcast message can be a master information block (master information block, MIB), a system information block 1 (system information block1, SIB1), or remaining minimum system information (remaining minimum system information, RMSI), or is other system information (other system information, OSI) (including SIB2, SIB3, etc.), which is not specifically limited in this application.

Step 702: According to the broadcast information of multiple second IAB nodes, multiple MTs of the first IAB node access cells of DUs of different second IAB nodes.

It should be noted that, multiple MTs in the first IAB node need to exchange information, so as to avoid the cells selected by each other on the DU of the same IAB node. The information exchange between multiple MTs belongs to the internal implementation of the IAB node, or if there is a standardized interface between the MTs, the DU information accessed by the MTs needs to be exchanged on the interface.

The first IAB node may acquire broadcast information of DUs of multiple second IAB nodes, and access the MT of the first IAB node to different cells of the DUs of the second IAB node according to the broadcast information. In this way, the multi-path gain of different MTs on the IAB node can be realized. This method can also improve the robustness of multi-routing, and combat problems such as excessive packet delay and packet loss caused by failure or interruption of some backhaul links.

Manner 3: The MT in the IAB node that has not established the communication connection is assisted to establish the communication connection with the DU of the parent node through the access identification information of the MT whose communication connection has been established by the IAB node.

It should be noted that, an MT that has established a communication connection may establish a communication connection with reference to the manner shown in FIG. 3 . Next, the first IAB node is used as an example to describe the node that needs to establish a communication connection. The first IAB node includes a first MT and one or more second MTs, wherein the first MT is an MT that has established a communication connection, and the The second MT is an MT that has not established a communication connection.

It can be performed by referring to the schematic flowchart of the cell configuration method of the MT of the IAB node shown in FIG. 8 , and FIG. 8 shows the first IAB node and the IAB host. Wherein, the first IAB node includes: one first MT and two second MTs. However, in practical application, the present application does not specifically limit the number of second MTs in the first IAB. The following operations performed by the second MT are similar, and only one is used as an example for illustration, and the operations performed by the other second MTs will not be repeated.

Step 801: The IAB host receives access request information from one or more second MTs of the first IAB node; the access request information includes: the access identification information of the first MT of the first IAB node, the second MT The identification information of the candidate parent node of the first IAB node includes the first MT and the one or more second MTs.

It should be noted that the second MT carries the access request information to establish a communication connection with the candidate parent node, so that the IAB host determines whether the first MT has accessed the candidate parent node according to the access information of the first MT.

Exemplarily, the access identification information of the first MT includes one or more of the following: identification information of the first MT, identification information of the first IAB node, and identification information of the DU of the first IAB node.

Specifically, the second MT may carry the access identity information of the first MT in message 3 or message 5 in the random access process, or carry the first MT's information in the RRC connection establishment request or the RRC connection establishment complete message. Access identification information. In addition, the access identification information of the first MT may also carry cell information and a radio network temporary identifier (radio network temporary identifier, RNTI) of the first MT.

Step 802: The IAB host determines, according to the access identification information of the first MT and the identification information of the candidate parent node of the second MT, the identification information of the parent node that establishes the connection with the first MT and the identification information of the candidate parent node of the second MT Whether it is the same; if so, go to step 803; if not, go to step 804.

It should be noted that after the first MT establishes a connection with the parent node, the IAB host will record the connection relationship of the first MT, and the connection relationship may include the access identification information of the first MT and the parent node that establishes the connection with the first MT. Node identification information. The IAB host can determine the connection relationship of the first MT through the access identification information of the first MT, and can determine the identification information of the parent node that establishes the connection with the first MT according to the connection relationship. The IAB host compares the identification information of the parent node that establishes the connection with the first MT with the identification information of the candidate parent node of the second MT to know whether the first MT establishes a connection with the candidate parent node of the second MT.

Step 803: The IAB host prohibits the second MT from establishing a connection with the DU of the candidate parent node of the second MT.

It should be noted that, when the IAB host executes step 803, when it is determined that the first MT and the second MT access the same candidate parent node, the access process of the second MT can be directly interrupted, and the connection can also be established after the second MT is connected. , the second MT is switched to the parent node of another IAB node, and this application does not specifically limit how the IAB host prohibits the second MT from accessing the candidate parent node.

Step 804: The IAB host allows the second MT to establish a connection with the DU of the candidate parent node of the second MT.

In this way, the second MT of the first IAB node (that is, the MT that has not established the connection) can carry the access identification information of the first MT (that is, the MT that has established the connection) to initiate the access request information to the candidate parent node, After acquiring the access request information, the IAB host may determine whether to allow the second MT to access the candidate parent node according to the access identification information of the first MT and the identification information of the candidate parent node of the second MT. In this way, different MTs on the IAB node can be connected to different parent nodes to achieve multi-path gain. This method can also improve the robustness of multi-routing, and combat problems such as excessive packet delay and packet loss caused by failure or interruption of some backhaul links.

Manner 4: Using the identification information of the parent node of the MT that has established a communication connection in the IAB node, assist the MT that has not established a communication connection in the IAB node to establish a communication connection with the DU of the parent node.

It should be noted that, an MT that has established a communication connection may establish a communication connection with reference to the manner shown in FIG. 3 . Next, the first IAB node is used as an example to describe the node that needs to establish a communication connection. The first IAB node includes a first MT and one or more second MTs, wherein the first MT is an MT that has established a communication connection, and the The second MT is an MT that has not established a communication connection, and the IAB node that has established a communication connection with the first MT is the second IAB node.

It can be performed by referring to the schematic flowchart of the cell configuration method of the MT of the IAB node shown in FIG. 9 , and FIG. 9 shows the first IAB node and the destination IAB node. Wherein, the first IAB node includes: one first MT and two second MTs. However, in practical application, the present application does not specifically limit the number of second MTs in the first IAB. The following operations performed by the second MT are similar, and only one is used as an example for illustration, and the operations performed by the other second MTs will not be repeated.

Step 901: The first IAB node obtains access information of the first MT of the first IAB node; the access information includes: address information of the second IAB node accessed by the first MT.

Step 902: The second MT of the first IAB node sends an access request to the destination IAB node.

It should be noted that the access request carries the access information of the first MT, so that the destination IAB node can determine whether to allow the access of the second MT according to the access information of the first MT.

In an optional manner, the access information further includes one or more of the following: identification information of the first MT and address information of the first IAB node. The access information of the first MT includes identification information of the first MT and address information of the first IAB node, so that the candidate parent node can determine whether both the first MT and the second MT are connected.

Step 903 : the destination IAB node determines whether the address information of the second IAB node is the same as the address information of the destination IAB node; if so, go to step 904 ; if not, go to step 905 .

Step 904: Forbid the access of the second MT.

Step 905: Allow the second MT to access.

In this way, the second MT of the first IAB node (that is, the MT that has not established the connection) can carry the access information of the first MT (that is, the MT that has established the connection) to initiate access request information to the candidate parent node, and the candidate After acquiring the access request information, the parent node can determine whether to allow the access of the second MT according to the access information of the first MT. In this way, different MTs on the IAB node can be connected to different parent nodes to achieve multi-path gain. This method can also improve the robustness of multi-routing, and combat problems such as excessive packet delay and packet loss caused by failure or interruption of some backhaul links.

The foregoing mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between the IAB host and the IAB nodes. It can be understood that, in order to realize the above-mentioned functions, the IAB host and the IAB node may include corresponding hardware structures and/or software modules for performing each function. Those skilled in the art should easily realize that the embodiments of the present application can be implemented in hardware or a combination of hardware and computer software in conjunction with the units and algorithm steps of each example described in the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In the case of using an integrated unit (module), FIG. 10 shows a schematic structural diagram of a cell configuration apparatus for an MT of an IAB node provided by an embodiment of the present application, including a receiving unit 101 and a processing unit 102 . The receiving unit 101 is connected with the processing unit 102 through a communication bus.

A receiving unit 101, configured to receive a measurement report from a first MT of a first IAB node, where the measurement report includes measurement results obtained by measuring signals of one or more cells by one or more second MTs, the first The IAB node includes the first MT and the one or more second MTs; the processing unit 102 is configured to determine, according to the measurement report, the configuration information of the target cell of the one or more second MTs, the first The cell accessed by the MT and the target cell of the one or more second MTs belong to the distributed unit DUs of different parent nodes of the first IAB node; send one or more second MTs to the first MT The configuration information of the target cell.

In an optional manner, the processing unit 102 is further configured to: receive a measurement configuration request from the first MT, where the measurement configuration request is used to request a measurement configuration for the one or more second MTs information; sending measurement configuration information of one or more second MTs to the first MT, where the measurement configuration information instructs the second MT to measure signals of one or more cells.

Based on the same concept, as shown in FIG. 11 , an embodiment of the present application provides an apparatus for configuring a cell of an MT of an IAB node, including: a receiving unit 111 and a processing unit 112 .

The receiving unit 111 is configured to receive access configuration request information from the first MT of the first IAB node; the access configuration request information is used to request the configuration information of the target cell for the one or more second MTs, the The first IAB node includes the first MT and the one or more second MTs; the processing unit 112 is configured to determine the configuration information of the target cell of the one or more second MTs according to the access configuration request information , the cell accessed by the first MT and the target cells of the one or more second MTs belong to the distributed unit DUs of different parent nodes of the first IAB node; send one or more to the first MT Configuration information of target cells of multiple second MTs.

Based on the same concept, as shown in FIG. 12 , an embodiment of the present application provides an apparatus for configuring a cell of an MT of an IAB node, including: a receiving unit 121 and a processing unit 122 .

A receiving unit 121, configured to receive broadcast information of DUs of multiple second IAB nodes, where the broadcast information of each second IAB node includes: DU identification information of the second IAB node, or DU of the second IAB node The information of one or more cells included; the processing unit 122 is configured to, according to the broadcast information of the multiple second IAB nodes, multiple MTs of the first IAB node access different second IAB nodes in the cell of the DU.

Based on the same concept, as shown in FIG. 13 , an embodiment of the present application provides an apparatus for configuring a cell of an MT of an IAB node, including: a receiving unit 131 and a processing unit 132 .

A receiving unit 131, configured to receive access request information from one or more second MTs of the first IAB node; the access request information includes: access information of the first MT of the first IAB node, all The identification information of the candidate parent node of the second MT, the first IAB node includes the first MT and the one or more second MTs; the processing unit 132 is used for accessing according to the first MT The identification information and the identification information of the candidate parent node of the second MT, according to the access identification information of the first MT and the identification information of the candidate parent node of the second MT, determine the identification information of the parent node that establishes a connection with the first MT It is the same as the identification information of the candidate parent node of the second MT; and the connection between the second MT and the DU and the candidate parent node of the second MT is prohibited.

In an optional manner, the access information of the first MT includes one or more of the following: identification information of the first MT, identification information of the first IAB node, and identification information of the first IAB node. Identification information of the DU of an IAB node.

Based on the same concept, as shown in FIG. 14 , a communication device 1400 is provided for this application. Illustratively, the communication device 1400 may be a chip or a system of chips. Optionally, in this embodiment of the present application, the chip system may be composed of chips, or may include chips and other discrete devices.

The communication apparatus 1400 may include at least one processor 1410, and the communication apparatus 1400 may further include at least one memory 1420 for storing computer programs, program instructions and/or data. Memory 1420 and processor 1410 are coupled. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. Processor 1410 may cooperate with memory 1420. The processor 1410 may execute computer programs stored in the memory 1420 . Optionally, the at least one memory 1420 may be integrated in the processor 1410 .

The communication apparatus 1400 may further include a transceiver 1430, and the communication apparatus 1400 may exchange information with other devices through the transceiver 1430. The transceiver 1430 can be a circuit, a bus, a transceiver, or any other device that can be used for information exchange.

It should be noted that the transceiver 1430 may include a radio frequency unit and an antenna, wherein the IAB host receives the measurement report, or receives the access configuration request information, or the access request information may be implemented by the transceiver 1430 . In addition, the communication device can also be applied to an IAB node. For example, the first IAB node can receive the broadcast information of the second IAB node through the transceiver 1430 .

In a possible implementation manner, the communication apparatus 1400 may be applied to the aforementioned network equipment, and the specific communication apparatus 1400 may be the aforementioned IAB node, may also be the IAB host, or may be capable of supporting the aforementioned network equipment to implement any of the aforementioned embodiments. installation. The memory 1420 holds the necessary computer programs, program instructions and/or data to implement the functions of the network device in any of the above-described embodiments. The processor 1410 can execute the computer program stored in the memory 1420 to complete the method in any of the foregoing embodiments.

The specific connection medium between the transceiver 1430, the processor 1410, and the memory 1420 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 1420, the processor 1410, and the transceiver 1430 are connected through a bus in FIG. 14. The bus is represented by a thick line in FIG. 14. The connection mode between other components is only for schematic illustration. It is not limited. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is shown in FIG. 14, but it does not mean that there is only one bus or one type of bus.

FIG. 15 is a schematic structural diagram of a CU-DU device provided by an embodiment of the present application. For example, it can be a schematic structural diagram of a base station, which can be exemplarily a schematic structural diagram of an IAB donor base station. When the donor base station 110 is an IAB donor, the DU included in it may refer to the donor DU, and the CU included in it may refer to the donor CU . As shown in FIG. 15 , the base station can be applied to the system shown in FIG. 2 to perform the functions of the donor base station in the foregoing method embodiment. Donor base station 110 may include one or more DUs 1101 and one or more CUs 1102. The DU 1101 may include at least one antenna 11011, at least one radio frequency unit 11012, at least one processor 11013 and at least one memory 11014. The DU 1101 part is mainly used for the transmission and reception of radio frequency signals, the conversion of radio frequency signals and baseband signals, and part of baseband processing. The CU 1102 may include at least one processor 11022 and at least one memory 11021 . Communication between the CU1102 and the DU1101 can be performed through an interface, wherein the control plane (Control plan) interface can be Fs-C, such as F1-C, and the user plane (User Plan) interface can be Fs-U, such as F1-U.

The CU 1102 part is mainly used to perform baseband processing, control the base station, and the like. The DU 1101 and the CU 1102 may be physically set together, or may be physically separated, that is, a distributed base station. The CU 1102 is the control center of the base station, which can also be called a processing unit, and is mainly used to complete the baseband processing function. For example, the CU 1102 may be used to control the base station to execute the operation flow of the network device in the foregoing method embodiments.

Specifically, the baseband processing on the CU and DU can be divided according to the protocol layers of the wireless network. For example, the functions of the packet data convergence layer protocol (PDCP) layer and above are set in the protocol layers below the CU and PDCP. For example, the functions of the RLC layer and the media access control (media access control, MAC layer, etc.) are set in the DU. For another example, the CU implements the functions of the RRC layer and the PDCP layer, and the DU implements the functions of the RLC layer, the MAC layer, and the physical layer.

In addition, optionally, the donor base station 110 may include one or more radio frequency units (RUs), one or more DUs and one or more CUs. The DU may include at least one processor 11013 and at least one memory 11014 , the RU may include at least one antenna 11011 and at least one radio frequency unit 11012 , and the CU may include at least one processor 11022 and at least one memory 11021 .

In an example, the CU 1102 may be composed of one or more boards, and the multiple boards may jointly support a wireless access network (such as a 5G network) with a single access indication, or may respectively support a wireless access network with different access standards. Wireless access network (such as LTE network, 5G network or other access network). The memory 11021 and the processor 11022 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board. The DU 1101 can be composed of one or more single boards, and multiple single boards can jointly support a wireless access network (such as a 5G network) with a single access indication, or can support a wireless access network with different access standards (such as a 5G network). Such as LTE network, 5G network or other access network). The memory 11014 and processor 11013 may serve one or more single boards. That is to say, the memory and processor can be provided separately on each single board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits may also be provided on each single board.

Optionally, the CU 1102 can transmit with the child node of the access network device through the DU 1101, the CU 1102 can be connected to other access network devices through the interface, and the CU 1102 can transmit from other access network devices (such as other access network devices) through the interface. The CU of the network access device receives data and/or messages, or the CU 1102 can send data and/or messages to the other access network devices through the interface.

In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which may implement or The methods, steps and logic block diagrams disclosed in the embodiments of this application are executed. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

In this embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or may also be a volatile memory (volatile memory), for example Random-access memory (RAM). The memory may also be, but is not limited to, any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory in this embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, for storing computer programs, program instructions and/or data.

Based on the above embodiments, the embodiments of the present application further provide a readable storage medium, where instructions are stored in the readable storage medium, and when the instructions are executed, the method for executing the security detection device in any of the above embodiments is implemented . The readable storage medium may include: a USB flash drive, a removable hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk and other media that can store program codes.

As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may 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.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory result in an article of manufacture comprising the instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

Claims

A cell configuration method for a mobile terminal MT that accesses and returns an integrated IAB node, the method is applied to an IAB host, and is characterized in that, comprising:

Receive a measurement report from a first MT of a first IAB node, the measurement report including measurement results obtained by one or more second MTs measuring signals of one or more cells, the first IAB node including the first IAB node an MT and the one or more second MTs;

According to the measurement report, the configuration information of the target cells of the one or more second MTs is determined, and the cells accessed by the first MT and the target cells of the one or more second MTs belong to the first MT Distributed unit DUs of different parent nodes of the IAB node;

The configuration information of one or more target cells of the second MT is sent to the first MT.
The method according to claim 1, wherein the method further comprises:

receiving a measurement configuration request from the first MT, the measurement configuration request being used to request measurement configuration information for the one or more second MTs;

Sending measurement configuration information of the one or more second MTs to the first MT, where the measurement configuration information instructs the second MT to measure signals of one or more cells.
A cell configuration method for a mobile terminal MT that accesses and returns an integrated IAB node, the method is applied to an IAB host, and is characterized in that, comprising:

Receive access configuration request information from a first MT of a first IAB node; the access configuration request information is used to request configuration information of a target cell for the one or more second MTs, the first IAB node includes all the first MT and the one or more second MTs;

According to the access configuration request information, the configuration information of the target cells of the one or more second MTs is determined, and the cells accessed by the first MT and the target cells of the one or more second MTs belong to the target cells of the one or more second MTs. the distributed unit DUs of the different parent nodes of the first IAB node;

Sending configuration information of target cells of the one or more second MTs to the first MT.
A cell configuration method for a mobile terminal MT that accesses a backhaul integrated IAB node, the method is applied to the first IAB node, and is characterized in that, comprising:

Receive broadcast information of DUs of multiple second IAB nodes, where the broadcast information of each second IAB node includes: DU identification information of the second IAB node, or one or more DUs included in the DU of the second IAB node community information;

According to the broadcast information of the multiple second IAB nodes, multiple MTs of the first IAB node access to different cells of the DUs of the second IAB node.
A cell configuration method for a mobile terminal MT that accesses and returns an integrated IAB node, the method is applied to an IAB host, and is characterized in that, comprising:

Receive access request information from one or more second MTs of the first IAB node; the access request information includes: the access identification information of the first MT of the first IAB node, the access identification information of the second MT Identification information of a candidate parent node, the first IAB node includes the first MT and the one or more second MTs;

According to the access identification information of the first MT and the identification information of the candidate parent node of the second MT, determine the identification information of the parent node establishing a connection with the first MT and the candidate parent node of the second MT The identification information is the same;

The connection between the second MT and the DU and the candidate parent node of the second MT is prohibited.
The method according to claim 5, wherein the access identification information of the first MT includes one or more of the following:

The identification information of the first MT, the identification information of the first IAB node, and the identification information of the DU of the first IAB node.
A cell configuration device for a mobile terminal MT accessing a backhaul integrated IAB node, characterized in that it includes:

a receiving unit, configured to receive a measurement report from the first MT of the first IAB node, where the measurement report includes measurement results obtained by one or more second MTs measuring signals of one or more cells, the first IAB a node includes the first MT and the one or more second MTs;

a processing unit, configured to determine, according to the measurement report, the configuration information of the target cells of the one or more second MTs, the cells accessed by the first MT and the target cells of the one or more second MTs Distributed unit DUs belonging to different parent nodes of the first IAB node; sending configuration information of one or more target cells of the second MT to the first MT.
The apparatus according to claim 7, wherein the processing unit is further configured to:

receiving a measurement configuration request from the first MT, the measurement configuration request being used to request measurement configuration information for the one or more second MTs;

Sending measurement configuration information of the one or more second MTs to the first MT, where the measurement configuration information instructs the second MT to measure signals of one or more cells.
A cell configuration device for a mobile terminal MT accessing a backhaul integrated IAB node, characterized in that it includes:

a receiving unit, configured to receive access configuration request information from the first MT of the first IAB node; the access configuration request information is used to request the configuration information of the target cell for the one or more second MTs, the first an IAB node including the first MT and the one or more second MTs;

a processing unit, configured to determine, according to the access configuration request information, configuration information of the target cell of the one or more second MTs, the cell accessed by the first MT and the one or more second MTs The target cell of the first IAB node belongs to the distributed unit DU of a different parent node of the first IAB node; and the configuration information of the target cells of the one or more second MTs is sent to the first MT.
A cell configuration device for a mobile terminal MT accessing a backhaul integrated IAB node, characterized in that it includes:

a receiving unit, configured to receive broadcast information of DUs of multiple second IAB nodes, where the broadcast information of each second IAB node includes: the DU identification information of the second IAB node, or the DU of the second IAB node includes: information of one or more cells of the

and a processing unit, configured to access multiple MTs of the first IAB node to different cells of the DU of the second IAB node according to the broadcast information of the multiple second IAB nodes.
A cell configuration device for a mobile terminal MT accessing a backhaul integrated IAB node, characterized in that it includes:

a receiving unit, configured to receive access request information from one or more second MTs of the first IAB node; the access request information includes: access identification information of the first MT of the first IAB node, all The identification information of the candidate parent node of the second MT, the first IAB node includes the first MT and the one or more second MTs;

A processing unit, configured to determine, according to the access identification information of the first MT and the identification information of the candidate parent node of the second MT, the identification information of the parent node that establishes a connection with the first MT and the identification information of the second MT. The identification information of the candidate parent node of the MT is the same; and the connection between the second MT and the DU and the candidate parent node of the second MT is prohibited.
The apparatus according to claim 11, wherein the access identification information of the first MT includes one or more of the following:

The identification information of the first MT, the identification information of the first IAB node, and the identification information of the DU of the first IAB node.
A communication device, comprising: a processor and a memory;

the memory for storing computer programs;

The processor for executing a computer program stored in the memory, so that the method according to any one of claims 1-2 or 3 or 4 or 5-6 is performed.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores instructions that, when executed, cause the method according to any one of claims 1-6 to be implemented.
A computer program product comprising instructions, which, when run on a computer, causes the computer to perform the method described in any one of the above 1-6.