WO2022199322A1

WO2022199322A1 - Communication cooperation method and apparatus

Info

Publication number: WO2022199322A1
Application number: PCT/CN2022/077990
Authority: WO
Inventors: 文敏; 楼群芳; 万莉; 王潇涵; 龚名新
Original assignee: 华为技术有限公司
Priority date: 2021-03-24
Filing date: 2022-02-25
Publication date: 2022-09-29
Also published as: CN115134822A

Abstract

The present application provides a communication cooperation method and apparatus. The method comprises: an access network device determining users to be scheduled of a first network node and a second network node and joint transmission weights of said users; the access network device optimizes the joint transmission weights on the basis of a first criterion, and optimizes said users according to the optimized joint transmission weights. By using embodiments of the present application, scheduling, etc. between network nodes can be jointly optimized, and joint transmission weights and scheduling, etc. can also be jointly optimized, thereby improving the experience of edge users, thus improving the average throughput of cells.

Description

A kind of communication cooperation method and device

This application claims the priority of the Chinese patent application with the application number of 202110315973.4 and the application title of "a method and device for communication and cooperation", which was filed with the Chinese Patent Office on March 24, 2021, the entire contents of which are incorporated into this application by reference .

technical field

The present application relates to the field of communication, and more particularly, to a communication cooperation method and apparatus applicable to a distributed antenna array scenario.

Background technique

In the cellular network of wireless communication, the edge user rate between multiple cells is an important indicator that affects the user experience in the network, and co-channel interference and signal energy are the key factors determining the performance of edge users. Since the user performance in the network mainly depends on the Signal to Interference plus Noise Ratio (SINR), how to reduce the edge user interference between multiple cells and improve the signal power are important topics in wireless communication algorithms. In view of this, communication collaboration is a solution in the form of borderless cell networking that improves the user experience at the edge of the distributed antenna array scenario and increases the average cell capacity. For users in the edge area between TRPs, the TRP interference is converted into useful signals through the joint coherent signal transmission between TRPs, which can increase the signal power and reduce the interference between TRPs, thereby improving the SINR of users. In addition, through the joint spatial degrees of freedom of multiple TRPs, joint precoding transmission weights can be designed to maximize the overall capacity of the system.

However, in the current solution for communication and cooperation in distributed antenna array scenarios, the scheduling process of each cell does not comprehensively consider the mutual interference of users among multiple cells, and the scheduling and other processes do not match the precoding weights. The performance does not match the actual air interface transmission capability of the user, which may lead to low multi-cell cooperation efficiency, degradation of user air interface performance, and even negative gains in average cell throughput and edge user performance.

Therefore, for the current communication cooperation solution in the distributed antenna array scenario, how to make the scheduling of each cell consider the mutual interference between users in multiple cells, and match the precoding weights of the physical layer, so as to improve the edge user experience, it has become an urgent need. solved problem.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a communication cooperation method and apparatus, which can be applied to a distributed antenna array scenario to improve the experience of edge users, and further improve the average throughput of a cell.

A first aspect of the embodiments of the present application discloses a communication cooperation method, including: an access network device determining a first number of user equipments to be scheduled for a first network node and a second number of user equipments to be scheduled for a second network node; The network access device determines a first joint transmission weight between the first user equipment in the first number of scheduled user equipments and the second number of scheduled user equipments, the first network node and the second network node; the The access network device determines a second joint transmission weight between the second user equipment in the first number of scheduled user equipments and the second number of scheduled user equipments and the first network node and the second network node; the access network device The network access device determines, based on the first criterion, a third joint sending weight between the first user equipment, the first network node and the second network node, where the third joint sending weight includes first weight information; the The access network device determines, based on the first criterion, a fourth joint transmission weight between the second user equipment and the first network node and the second network node, where the fourth joint transmission weight includes second weight information ; the access network device determines, based on the first weight information, whether the first user equipment continues to perform cooperative communication with the first network node and the second network node, and the access network device determines based on the second weight information Whether the second user equipment continues to perform cooperative communication with the first network node and the second network node.

Based on the method, the access network device can jointly optimize the user equipment scheduled by the first network node and the second network node based on the first weight information and the second weight information. That is, the method can jointly optimize the scheduling and other processes between network nodes, and can jointly optimize the joint transmission weight and scheduling, so as to improve the experience of edge users, and then improve the average throughput of the cell.

With reference to the first aspect, in some embodiments of the first aspect, the access network device determines a modulation and coding strategy (Modulation and Coding Scheme, MCS), and/or, the access network device determines the MCS corresponding to the second user equipment according to the fourth joint sending weight.

Based on the method, the access network device can jointly optimize the joint transmission weight and the MCS estimation, thereby improving the experience of edge users, and further improving the average throughput of the cell.

With reference to the first aspect, in some implementations of the first aspect, the access network device determines, according to the MSC corresponding to the first user equipment, whether the first user equipment continues to be in the first resource block group (Resource Block Group, RBG), the first RBG is any one of all the RBGs where the first user equipment is located; and/or, the access network device is based on the MSC corresponding to the second user equipment Determine whether the second user equipment continues to schedule on the first RBG, where the first RBG is any one of all the RBGs where the second user equipment is located.

Based on this method, the access network device can avoid frequency bands with poor channel quality in a frequency selective channel scenario, thereby improving the experience of edge users, and further improving the average throughput of the cell.

In conjunction with the first aspect, in certain embodiments of the first aspect, the first criterion comprises a weighted sum capacity maximization criterion. Based on the first criterion, the access network device may further optimize the joint transmission weight.

In conjunction with the first aspect, in some implementations of the first aspect, the first criterion may further include a weighted minimum mean square error criterion. Based on the first criterion, the access network device may further optimize the joint transmission weight.

With reference to the first aspect, in some implementations of the first aspect, the first transmission weight information includes a norm of the third joint transmission weight, and the second transmission weight information includes the fourth joint transmission norm of the weights. The norm may represent the power of the third joint transmission weight or the fourth joint transmission weight, and the access network device may determine whether to delete the first user or the second user according to the norm.

With reference to the first aspect, in some implementations of the first aspect, the access network device determines the first user equipment and the first user equipment among the first number of scheduled user equipments and the second number of scheduled user equipments. The first joint sending weight between a network node and the second network node includes: acquiring, by the access network device, first channel measurement information and second channel measurement information of the first user equipment, and the The first channel measurement information is the channel measurement information between the first user equipment and the first network node, and the second channel measurement information is the channel measurement information between the first user equipment and the second network node. Channel measurement information; the access network device splices the first channel measurement information and the second channel measurement information to obtain third channel measurement information; the access network device combines the third channel measurement information Perform singular value decomposition, and take its right singular vector as the first joint transmission weight of the first user equipment.

With reference to the first aspect, in some implementations of the first aspect, the access network device determines that the second user equipment in the first number of scheduled user equipments and the second number of scheduled user equipments is the same as the second user equipment in the first number of scheduled user equipments. The second joint sending weight between a network node and the second network node includes: acquiring, by the access network device, fourth channel measurement information and fifth channel measurement information of the second user equipment, and the The fourth channel measurement information is the channel measurement information between the second user equipment and the first network node, and the fifth channel measurement information is the channel measurement information between the second user equipment and the second network node. Channel measurement information; the access network device splices the fourth channel measurement information and the fifth channel measurement information to obtain sixth channel measurement information; the access network device combines the sixth channel measurement information Perform singular value decomposition, and take its right singular vector as the second joint transmission weight of the second user equipment.

With reference to the first aspect, in some implementations of the first aspect, the first channel measurement information and the second channel measurement information are obtained based on uplink sounding reference signal (SRS) measurement of the first user equipment, Or, the first channel measurement information and the second channel measurement information are obtained based on channel state information (CSI) fed back by the first user equipment; the fourth channel measurement information and the fifth channel measurement information are based on The uplink channel SRS measurement of the second user equipment is obtained, or the fourth channel measurement information and the fifth channel measurement information are obtained based on the CSI fed back by the second user equipment.

With reference to the first aspect, in some implementations of the first aspect, the access network device determines the first number of user equipments to be scheduled for the first network node and the second number of user equipments to be scheduled for the second network node, including : The network device determines the first number of user equipments to be scheduled and the second number of user equipments to be scheduled based on a second criterion, where the second criterion includes a proportional fairness (PF) criterion.

A second aspect of the embodiments of the present application discloses a communication cooperation method, including: an access network device determining a first number of user equipments to be scheduled for a first network node and a second number of user equipments to be scheduled for a second network node; the The access network device determines a first joint transmission right between the first user equipment among the first number of scheduled user equipments and the second number of scheduled user equipments and the first network node and the second network node value; the access network device determines the first number of scheduled user equipments and the second number of scheduled user equipments between the second user equipment and the first network node and the second network node. two joint sending weights; the access network device determines, based on the first criterion, a third joint sending weight between the first user equipment and the first network node and the second network node; the The access network device determines, based on the first criterion, a fourth joint sending weight between the second user equipment and the first network node and the second network node; the access network device determines a fourth joint sending weight based on the first criterion; The third joint transmission weight determines the modulation and coding strategy (MCS) corresponding to the first user equipment, and the access network device determines the MCS corresponding to the second user equipment according to the fourth joint transmission weight.

With reference to the second aspect, in some implementations of the second aspect, the third joint sending weight includes first weight information, and the access network device determines the first user based on the first weight information Whether the device continues to perform cooperative communication with the first network node and the second network node; the fourth joint sending weight includes second weight information, and the access network device determines based on the second weight information Whether the second user equipment continues to perform cooperative communication with the first network node and the second network node.

Based on the method, the access network device can jointly optimize the user equipment scheduled by the first network node and the second network node based on the first weight information and the second weight information. That is, the method can jointly optimize the scheduling between network nodes, and can jointly optimize the joint transmission weight and scheduling, so as to improve the experience of edge users, and then improve the average throughput of the cell.

With reference to the second aspect, in some implementation manners of the second aspect, the access network device determines whether the first user equipment continues to schedule on the first RBG according to the MSC corresponding to the first user equipment, The first RBG is any one of all RBGs where the first user equipment is located; and/or the access network device determines the second user equipment according to the MSC corresponding to the second user equipment Whether to continue scheduling on the first RBG, where the first RBG is any one of all the RBGs where the second user equipment is located.

Based on this method, the access network device can avoid frequency bands with poor channel quality in frequency selective channel scenarios, thereby improving the experience of edge users, and further improving the average throughput of the cell.

In conjunction with the second aspect, in certain embodiments of the second aspect, the first criterion includes a weighted sum capacity maximization criterion.

In conjunction with the second aspect, in some implementations of the second aspect, the first criterion may further include a weighted minimum mean square error criterion.

With reference to the second aspect, in some implementations of the second aspect, the first transmission weight information includes a norm of the third joint transmission weight, and the second transmission weight information includes the fourth joint transmission norm of the weights. The norm may represent the power of the third joint transmission weight or the fourth joint transmission weight, and the access network device may determine whether to delete the first user or the second user according to the norm.

With reference to the second aspect, in some implementations of the second aspect, the access network device determines the first user equipment and the first user equipment among the first number of scheduled user equipments and the second number of scheduled user equipments. The first joint sending weight between a network node and the second network node includes: acquiring, by the access network device, first channel measurement information and second channel measurement information of the first user equipment, and the The first channel measurement information is the channel measurement information between the first user equipment and the first network node, and the second channel measurement information is the channel measurement information between the first user equipment and the second network node. Channel measurement information; the access network device splices the first channel measurement information and the second channel measurement information to obtain third channel measurement information; the access network device combines the third channel measurement information Perform singular value decomposition, and take its right singular vector as the first joint transmission weight of the first user equipment.

With reference to the second aspect, in some implementations of the second aspect, the access network device determines that the second user equipment among the first number of scheduled user equipments and the second number of scheduled user equipments is the same as the second one of the first number of scheduled user equipments. The second joint sending weight between a network node and the second network node includes: acquiring, by the access network device, fourth channel measurement information and fifth channel measurement information of the second user equipment, and the The fourth channel measurement information is the channel measurement information between the second user equipment and the first network node, and the fifth channel measurement information is the channel measurement information between the second user equipment and the second network node. Channel measurement information; the access network device splices the fourth channel measurement information and the fifth channel measurement information to obtain sixth channel measurement information; the access network device combines the sixth channel measurement information Perform singular value decomposition, and take its right singular vector as the second joint transmission weight of the second user equipment.

With reference to the second aspect, in some implementations of the second aspect, the first channel measurement information and the second channel measurement information are obtained based on uplink sounding reference signal (SRS) measurement of the first user equipment, Or, the first channel measurement information and the second channel measurement information are obtained based on channel state information (CSI) fed back by the first user equipment; the fourth channel measurement information and the fifth channel measurement information are based on The uplink channel SRS measurement of the second user equipment is obtained, or the fourth channel measurement information and the fifth channel measurement information are obtained based on the CSI fed back by the second user equipment.

With reference to the second aspect, in some implementations of the second aspect, the access network device determines the first number of user equipments to be scheduled for the first network node and the second number of user equipments to be scheduled for the second network node, including : The network device determines the first number of user equipments to be scheduled and the second number of user equipments to be scheduled based on a second criterion, where the second criterion includes a proportional fairness (PF) criterion.

A third aspect of the embodiments of the present application provides a communication apparatus, where the communication apparatus is applied to an access network device, and includes a module for executing the method described in the first aspect or any possible implementation manner of the first aspect, or a module for performing the method described in the second aspect or any possible implementation manner of the second aspect.

A fourth aspect of an embodiment of the present application provides a communication apparatus, which is applied to an access network device, and includes a processor and an interface circuit, where the interface circuit is configured to receive signals from other apparatuses other than the apparatus and generate transmit to the processor or send signals from the processor to other devices than the device, the processor through logic circuits or executing code instructions for implementing the first aspect or the possibilities of the first aspect Implement the method described in the implementation, or implement the method described in the second aspect or possible implementations of the second aspect.

A fifth aspect of the embodiments of the present application provides a computer-readable storage medium, where a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is executed by a computing device, the first aspect or the first aspect is implemented. A method described in possible implementations of the aspect, or a method described in the second aspect or possible implementations of the second aspect.

A sixth aspect of the embodiments of the present application provides a computer program product, where the computer program product includes a computer program or an instruction, and when the computer program or instruction is executed by a computing device, the first aspect or a possible implementation manner of the first aspect is implemented A method described in , or a method described in implementing the second aspect or possible implementations of the second aspect.

A seventh aspect of an embodiment of the present application provides a communication system, and the communication system includes one or more of the following: the communication device provided in the third aspect or the fourth aspect, and the computer-readable storage device provided in the fifth aspect A medium, and a computer program product as provided by the sixth aspect.

Description of drawings

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

FIG. 2 is a schematic flowchart of a communication cooperation method provided by an embodiment of the present application;

FIG. 3 is still another schematic flowchart of a communication cooperation method provided by an embodiment of the present application;

FIG. 4 is still another schematic flowchart of a communication cooperation method provided by an embodiment of the present application;

FIG. 5 is still another schematic flowchart of a communication cooperation method provided by an embodiment of the present application;

FIG. 6 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application;

FIG. 7 is still another schematic block diagram of a communication apparatus according to an embodiment of the present application.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

It should be understood that, in this embodiment of the present application, the size of the sequence number of each process does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute the implementation process of the embodiment of the present application. any restrictions.

It should be understood that, in the embodiments of the present application, the numbering of the terms is generally a description for the convenience of distinction, and the numbering does not mean that the terms have a difference in order or priority, such as "the first user" and "the first user". Two users", where "first" and "second" are generally only used to distinguish these two groups of information, and should not constitute a limitation on the implementation process of the embodiments of the present application.

It should be understood that, in the embodiments of the present application, "at least one" refers to one or more, and "a plurality" refers to two or more. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one item (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple .

It should be understood that in the embodiments of the present application, the terms "system" and "network" are often used interchangeably herein. It should be understood that, in the embodiments of the present application, the term "and/or" is generally used to describe the association relationship between associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists alone , A and B exist at the same time, and B exists alone. It should be understood that the character "/" appearing in the embodiments of the present application generally indicates that the related objects before and after are an "or" relationship.

The methods and apparatuses provided in the embodiments of the present application can be applied to a communication system. FIG. 1 shows a schematic diagram of a communication system architecture. The communication system 100 includes a first network node 110 and a second network node 120, the first network node 110 and the second network node 120 may belong to the same access network device, and the first network node 110 and the second network node 120 have their respective neighborhoods. The communication system 100 further includes a terminal device 130, a terminal device 140, a terminal device 150 and a terminal device 160, wherein the terminal device 130 communicates with the first network node 110 through the cell of the first network node 110; the terminal device 140 is in the first network node 110. A network node 110 is at the cell edge, so the first network node 110 and the second network node 120 can simultaneously perform cooperative communication with the terminal device 140, which can not only enhance the received signal power of the terminal device 140, but also reduce the amount of power received by the terminal device 140. interference, thereby improving the experience of the terminal device 140; the terminal device 150 is located at the cell edge of the second network node 120, so the first network node 110 and the second network node 120 can perform cooperative communication with the terminal device 150 at the same time, so that both The received signal power of the terminal device 150 can be enhanced, and the interference received by the terminal device 150 can be reduced at the same time, thereby improving the experience of the terminal device 150; The network nodes 120 communicate.

The methods and apparatuses provided in the embodiments of this application can be used in various communication systems, such as a fourth generation (4th generation, 4G) communication system, a 4.5G communication system, a 5G communication system, a system that integrates multiple communication systems, or a future evolved communication system. Communication system (such as 5.5G communication system or 6G communication system). For example, long term evolution (LTE) systems, new radio (NR) systems, wireless-fidelity (WiFi) systems, and 3rd generation partnership project (3GPP) related This application does not limit the specific communication system types that can be applied, such as the communication system and so on.

The access network device in this embodiment of the present application may be any device with a transceiver function. The access network device may be a device that provides wireless communication function services for the communication device, and is usually located on the network side, including but not limited to: the next generation base station (gNodeB, gNB) in the fifth generation (5th generation, 5G) communication system, Evolved Node B (evolved node B, eNB), home base station (for example, home evolved Node B, or home Node B, HNB), base band unit (base band unit, BBU), etc. in the LTE system. In a network structure, the access network device may include a centralized unit (centralized unit, CU) node, or a distributed unit (distributed unit, DU) node, or a RAN device including a CU node and a DU node, or a control plane CU Node and User Plane CU Node, and RAN Equipment of DU Node. The access network equipment provides services for the cell, and the communication device communicates with the base station through transmission resources (for example, frequency domain resources, or time-frequency resources) used by the cell, and the cell may be a cell corresponding to the base station (for example, a base station). It can belong to a macro base station, or it can belong to a base station corresponding to a small cell. The small cell here can include: urban cell (metro cell), micro cell (micro cell), pico cell (pico cell), femto cell ( femto cell), these small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services. The access network device can also provide wireless communication services for terminal devices in the V2X communication system, wireless controllers, relay stations, in-vehicle devices, wearable devices in cloud radio access network (CRAN) scenarios The device and the network device in the future evolution network, etc., the specific implementation form is not limited in the embodiments of the present application.

In addition, in this embodiment of the present application, the first network node and the second network node may be devices in the RAN, or in other words, the RAN nodes that access the communication apparatus to the wireless network. For example, as an example and not a limitation, it may be: a transmission reception point (TRP), a transmission point (TP), a base transceiver station (base transceiver station, BTS), and the like.

The terminal device in this embodiment of the present application is a device with a wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed In the air (eg in airplanes, balloons, satellites, etc.). The terminal device can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a terminal in industrial control, a vehicle terminal device, a terminal in self driving, Terminal in assisted driving, terminal in remote medical, terminal in smart grid, terminal in transportation safety, terminal in smart city, terminal in smart home (smart) terminal in the home), terminal in the Internet of things (IoT) system, etc. The embodiments of the present application do not limit application scenarios. In the embodiments of this application, terminal equipment is sometimes also referred to as user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, and remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, machine terminal, UE proxy or UE device, etc. The terminal equipment can be fixed or mobile. As an example and not a limitation, the terminal device in this embodiment of the present application may also be a VR terminal, an AR terminal, or an MR terminal. VR terminals, AR terminals, and MR terminals may all be referred to as XR terminals. For example, the XR terminal can be a head-mounted device (such as a helmet or glasses), an all-in-one machine, a TV, a monitor, a car, a vehicle-mounted device, a tablet, a smart screen, a holographic projector, a video player, and a remote control robot. , tactile Internet terminals, etc. The XR terminal can present XR data to the user, and the user can experience a variety of XR services by wearing or using the XR terminal. The XR terminal can access the network in a wireless or wired manner, for example, through WiFi or a 5G system.

In the wireless communication network, the communication cooperation in the distributed antenna array scenario is a solution in the form of borderless networking that improves the user experience at the edge and increases the average cell capacity at the same time. The communication cooperation in the distributed antenna array scenario is aimed at users in the edge area between multiple TRPs. Through the joint coherent signal transmission between the TRPs, the interference between the TRPs is converted into useful signals, which can enhance the signal power and reduce the interference between the TRPs. The SINR of the user can be improved. In addition, through the joint spatial degrees of freedom of multiple TRPs, joint precoding transmission weights can be designed to maximize the overall capacity of the system. For example, as shown in FIG. 1 , the terminal device 140 is an edge user of the first network node 110 , and the terminal device 150 is an edge user of the second network node 120 . Because the received signal energy of edge users is relatively small, and the interference from neighboring cells is relatively large, the communication quality of edge users will be affected. In order to improve the user experience of the edge terminal device 140 and the edge terminal device 150, the second network node 110 and the second network 120 will jointly cooperate to send coherent signals to the terminal device 140 and the terminal device 150, respectively, so that the terminal device 140 and the terminal device 150 can be enhanced. The signal received by the device 150 can in turn reduce the interference received by the terminal device 140 and the terminal device 150 , thereby improving the user experience of the terminal device 140 and the terminal device 150 . It should be understood that the second network node 110 and the second network node 110 may be the above-mentioned TRPs.

Based on FIG. 1 , FIG. 2 shows a schematic flowchart of a communication cooperation method provided by an embodiment of the present application. The media access layers (Media Access Control, MAC) of the first network node 210 and the second network node 220 independently perform scheduling, MCS estimation, and the like. In order to improve the user experience of edge users, after the MAC layers of the first network node 210 and the second network node 220 independently perform scheduling, MCS estimation, etc., the joint weight design of the physical layer (PHY) is used to improve user reception. Signal strength and interference rejection capability of the user. The above communication cooperation method may have the following problems: First, the MAC layer scheduling, MCS estimation, etc. of the first network node 210 and the second network node 220 are performed independently in their respective cells, and do not consider the multi-cell users. Mutual interference and other factors, this may not achieve the optimal performance of the system scheduling, MCS estimation and other effects. Secondly, since the joint transmission weight calculation of the PHY layer is performed after the MAC layer scheduling, MCS estimation and other processes are executed, the relevant process of the MAC layer does not consider the transmission signal of the air interface after the PHY layer performs the joint weight calculation. The enhanced capability and the enhanced interference suppression capability result in a large performance deviation between the MAC layer and the PHY layer. That is to say, the MAC layer and the PHY layer are not jointly optimized and designed, and the related process of the MAC layer does not match the performance of the joint transmission weight of the PHY layer, which may reduce the efficiency of communication and cooperation, the performance of the air interface, and some scenarios may also lead to the average cell average. There is a negative gain in throughput and edge user rate. In view of the above problems, the embodiments of the present application propose the following solutions.

Referring to FIG. 1 and FIG. 2 , and referring to FIG. 3 , FIG. 3 shows a schematic flowchart of a communication cooperation method 300 provided by an embodiment of the present application. The communication cooperation method shown in FIG. 3 involves a first network node and a second network node, wherein the first network node and the second network node may belong to the same access network device as components of the access network device or the first network node and the second network node belong to different access network devices, and the first network node and the second network node may also be controlled by the same access network device. It should be understood that the access network device in FIG. 3 includes two network nodes is just an example, the access network device may include more than two network nodes, and the number of network nodes is not limited here. The first network node may be the first network node shown in FIG. 1 and FIG. 2 in the embodiment of the application, and the second network node may be the second network shown in FIG. 1 and FIG. 2 in the embodiment of the application node. Exemplarily, the first network node is TRP0 and the second network node is TRP1 as an example for description below, and for convenience of description, hereinafter referred to as TRP0 and TRP1. The method 300 in this embodiment of the present application includes but is not limited to the following steps:

S301: Determine the initial to-be-scheduled user equipment and the initial joint transmission weight.

Exemplarily, the access network device determines a first number of user equipments to be scheduled for TRP0 and a second number of user equipments to be scheduled for TRP1. Optionally, the access network device may, based on a proportional fair (Proportional fair, PF) criterion, sort according to the PF factor from high to low, and select the first TRP0 from the user equipment of the cell corresponding to TRP0 and the user equipment of the cell corresponding to TRP1. The number of user equipments to be scheduled and the second number of user equipments to be scheduled of TRP1 are used as initial user equipments to be scheduled. The first number of user equipments to be scheduled in the TRP0 and the second number of user equipments to be scheduled in the TRP1 are the initial user equipments to be scheduled determined by the access network.

Exemplarily, after determining the initial user to be scheduled, the access network device may determine the first joint transmission weight between the first user equipment and the TRP0 and the TRP1, and the access network device may also determine The second joint transmission weight between the second user equipment and the TRP0 and the TRP1; wherein the first user equipment and the second user equipment are included in the initial to-be-scheduled user equipment. The first joint transmission weight and the second joint transmission weight are the initial joint transmission weights of the first user equipment and the second user equipment. The first joint transmission weight and the second joint transmission weight are included in the initial joint transmission weight.

S302: Determine the optimal joint transmission weight based on the first criterion, and determine whether to delete the user equipment according to the weight information.

Exemplarily, the access network device determines the third joint transmission weight between the above-mentioned first user equipment and TRP0 and TRP1 based on the first criterion, where the third joint transmission weight includes the first weight information; the access network device is based on The first criterion determines the fourth joint transmission weight between the above-mentioned second user equipment and TRP0 and TRP1, and the third joint transmission weight includes second weight information; the first criterion may be a weighted sum capacity maximization criterion, or It can be a weighted minimum mean square error criterion or other weight optimization criterion, and the weight optimization criterion is not limited here. The access network device determines, based on the first weight information, whether the first user equipment continues to perform cooperative communication with the first TRP and the second TRP; similarly, the access network device determines based on the second weight information Whether the second user equipment continues to perform cooperative communication with the first TRP and the second TRP. The first weight information may be obtained by the access network device based on the norm of the third joint transmission weight, or may be obtained by the access network device based on the power of the third joint transmission weight; similarly, the third joint transmission weight The second weight information may be obtained by the access network device based on the norm of the fourth joint transmission weight, or may be obtained by the access network device based on the power of the fourth joint transmission weight. The norm may also represent the power of the third joint transmission weight or the fourth joint transmission weight, and the access network device may determine whether to delete the first user or the second user according to the norm.

The communication cooperation method 300 in the embodiment of the present application jointly optimizes the MAC layer scheduling between TRPs, and jointly optimizes the joint transmission weight of the PHY layer and the MAC layer scheduling, thereby improving the experience of edge users. Thus, the average throughput of the cell is improved.

Referring to FIG. 1 , FIG. 2 , and FIG. 3 , please refer to FIG. 4 . FIG. 4 shows a schematic flowchart of a communication cooperation method 400 provided by an embodiment of the present application. The communication cooperation method shown in FIG. 4 involves a first network node and a second network node, wherein the first network node and the second network node may belong to the same access network device as components of the access network device or the first network node and the second network node belong to different access network devices, and the first network node and the second network node may also be controlled by the same access network device. It should be understood that the access network device in FIG. 4 includes two network nodes is only an example, the access network device may include more than two network nodes, and the number of network nodes is not limited here. The first network node may be the first network node shown in FIG. 1 , FIG. 2 , and FIG. 3 according to the embodiment of the application, and the second network node may be the first network node shown in FIG. 1 , FIG. 2 , and FIG. 3 according to the embodiment of the application. A second network node is shown. Exemplarily, the first network node is TRP0 and the second network node is TRP1 as an example for description below, and for convenience of description, hereinafter referred to as TRP0 and TRP1. The method 400 in this embodiment of the present application includes but is not limited to the following steps:

S401: Determine an initial to-be-scheduled user equipment and an initial joint transmission weight.

The method for determining the first joint sending weight and the second joint sending weight by the access network device may be the same. The following is an example of the method for determining the first joint sending weight:

Exemplarily, the access network device acquires channel measurement information between the first user equipment and TRP0, and acquires channel measurement information between the first user and TRP1. The information measurement information may be uplink channel estimation between the first user equipment and TRP0 and uplink channel estimation between the first user equipment and TRP1, or may be downlink channel estimation between the first user equipment and TRP0 and the downlink channel estimation between the first user equipment and TRP1, or other measurement information that can reflect the channel information between the first user equipment and TRP0 and between the first user and TRP1. The access network device may obtain an uplink channel estimate between the first user equipment and TRP0 and an uplink channel estimate between the first user equipment and TRP1 through a channel sounding reference signal (Sounding Reference Signal, SRS) sent by the first user equipment Uplink channel estimation; the access network equipment can also obtain the uplink channel estimation between the first user equipment and the TRP0 and the first user equipment through a demodulation reference signal (Demodulation Reference Signal, DMRS) sent by the first user equipment Uplink channel estimation with TRP1; the access network device can obtain the downlink channel estimation between the first user equipment and TRP0 and the first user equipment through the channel state information (Channel State Information, CSI) fed back by the first user equipment Downlink channel estimation between a user equipment and TRP1. After acquiring the channel measurement information (H0) between the first user and the TRP0 and the channel measurement information (H1) between the first user and the TRP1, the access network device may splicing H0 and H1 , where H0 and H1 are in matrix form. The spliced channel measurement information (H2) is

H2 is also a matrix. For example, the dimension of the matrix H0 is m rows and n columns, and the dimension of the matrix H1 is also m rows and n columns, then the dimension of the H2 after the splicing of the H0 and the H1 is 2m rows and n columns. The access network device performs singular value decomposition (Singular Value Decomposition, SVD) on the spliced channel measurement information H2, and takes the right singular matrix after SVD decomposition as the relationship between the first user and the TRP0 and the TRP1 The first jointly sends the weights.

SVD decomposition is a kind of matrix decomposition in linear algebra. Exemplarily, the decomposition process of SVD is as follows: Assuming that M is a matrix of order m×n, the elements in it all belong to the real number field or the complex number field, then there is a decomposition such that

M=UΣV ^*

where U is an m×m order unitary matrix; Σ is a positive semi-definite m×n order diagonal matrix, and V is an n×n order unitary matrix. Such a decomposition is called the SVD decomposition of M. The elements on the diagonal of Σ are singular values of M.

Illustratively, the above m and n are positive integers.

Exemplarily, the access network device may determine the second joint sending weight between the second user and the TRP0 and the TRP1 by using the above method.

Exemplarily, the granularity of the first joint transmission weight and the second joint transmission weight is a resource block group (Resource Block Group, RBG). For example, if the first user is scheduled on 10 RBGs, each RBG has a corresponding first joint transmission weight. Likewise, each RBG on the scheduled RBG of the second user has a corresponding second joint transmission weight.

It should be understood that the above method only takes the first user equipment and the second user equipment as examples, and the above-mentioned initial user equipment to be scheduled may not only include the first user equipment and the second user equipment, but may also include other users. User equipment, the number of user equipment is not limited here. The initial joint transmission weight of each user equipment included in the initial to-be-scheduled user equipment may be determined with reference to the above-mentioned method for the first joint transmission weight.

S402: Determine the optimal joint transmission weight of the user equipment to be initially scheduled based on the first criterion, and determine whether to delete the user equipment according to the weight information.

Exemplarily, if step S402 is performed for the first time, the access network device determines the third joint transmission weight between the above-mentioned first user equipment and TRP0 and TRP1 based on the first criterion, and the third joint transmission weight includes the third joint transmission weight. weight information; the access network device determines the fourth joint transmission weight between the above-mentioned second user equipment and TRP0 and TRP1 based on the first criterion, and the third joint transmission weight includes the second weight information; the first criterion may be It is a weighted sum capacity maximization criterion, a weighted minimum mean square error criterion, or other weight optimization criterion, and the weight optimization criterion is not limited here. The access network device determines, based on the first weight information, whether the first user equipment continues to perform cooperative communication with the first TRP and the second TRP; similarly, the access network device determines based on the second weight information Whether the second user equipment continues to perform cooperative communication with the first TRP and the second TRP. The first weight information may be obtained by the access network device based on the norm of the third joint transmission weight, or may be obtained by the access network device based on the power of the third joint transmission weight; similarly, the third joint transmission weight The second weight information may be obtained by the access network device based on the norm of the fourth joint transmission weight, or may be obtained by the access network device based on the power of the fourth joint transmission weight. The norm may also represent the power of the third joint transmission weight or the fourth joint transmission weight, and the access network device may determine whether to delete the first user or the second user according to the norm. The access network device compares the first weight information and the second weight information with the weight threshold respectively, and determines whether the first user equipment or the second user equipment needs to be deleted. The weight threshold may be a threshold pre-configured to the access network device, or may be calculated by the access network device according to cell performance requirements, and the specific obtaining method of the weight threshold is not limited here. When the first weight is less than the weight threshold, the access network device will delete the first user equipment from the initial scheduling user equipment; when the second weight is less than the weight threshold, the access network device will delete the first user equipment from the initial scheduling user equipment The second user equipment is deleted from the user equipment. It is assumed here that both the first weight and the second weight are greater than the weight threshold, that is, both the first user equipment and the second user equipment continue to perform cooperative communication with TRP0 and TRP1. The third joint sending weight and the fourth joint sending weight are the optimized joint sending weights for performing this step S402; the first user equipment and the second user equipment are the optimized joint sending weights after performing this step S402. User equipment is scheduled.

Exemplarily, if step S402 is performed for the second time, the access network device obtains the first user equipment, the second user equipment, the third joint sending weight and the fourth joint transmission weight obtained by performing step S402 for the first time. A weight is sent, and based on the first criterion, a fifth joint transmission weight between the first user equipment and TRP0 and TRP1 and a sixth joint transmission weight between the second user equipment and TRP0 and TRP1 are determined. For example, the access network device may determine the fifth joint transmission weight and the sixth joint transmission weight according to the formula W ^(t) =f(W ^(t-1) ,H). Wherein, W ^(t) can represent the fifth joint sending weight or the sixth joint sending weight, W ^(t-1) can represent the third joint sending weight or the fourth joint sending weight, and H can represent that step S402 is Execute the channel measurement information between the first user equipment or the second user equipment and TRP0 and TRP1 for the second time; f represents the first criterion. The fifth joint sending weight includes third weight information, and the sixth joint sending weight includes fourth weight information. The access network device determines whether the first user equipment, the first TRP and the second TRP continue to perform cooperative communication based on the third weight information; similarly, the access network device determines the second user based on the fourth weight information Whether the device continues to perform cooperative communication with the first TRP and the second TRP. The fifth joint sending weight and the sixth joint sending weight are the optimized joint sending weights for performing this step S402; the first user equipment and the second user equipment are the optimized joint sending weights after performing this step S402. Scheduling user equipment.

Exemplarily, the granularity of the third joint transmission weight, the fourth joint transmission weight, the fifth joint transmission weight, and the sixth joint transmission weight is RBG.

It should be understood that step S402 may be performed multiple times, and for the method performed for the third time and the last time, reference may be made to the method performed for the second time in step S402 above. The above-mentioned initial user equipment to be scheduled may not only include the first user equipment and the second user equipment, but may also include more than two user equipments, and the number of user equipments is not limited here. For the method for determining the optimal joint transmission weight of each user equipment included in the above-mentioned initial user equipment to be scheduled, and the method for whether to delete each user equipment, reference may be made to the description of step S402.

S403, it is judged whether the number of iterations in step S402 reaches the iteration threshold.

Exemplarily, the access network device determines whether the number of iterations in step S402 reaches the iteration threshold. If the number of iterations does not reach the threshold, step S402 is performed, and if the number of iterations reaches the threshold, step S404 is performed. The iteration threshold may be an integer greater than or equal to 1, such as 10, configured in advance on the access network device.

S404: Determine the optimized MCS of the user equipment to be scheduled according to the optimized joint transmission weight.

Exemplarily, if step S402 is performed only once, the access network device determines the MCS corresponding to the first user equipment according to the third joint transmission weight, and determines the second joint transmission weight according to the fourth joint transmission weight. The MCS corresponding to the user equipment. If step S402 is performed twice, the access network device determines the MCS corresponding to the first user equipment according to the fifth joint sending weight, and determines the MCS corresponding to the second user equipment according to the sixth joint sending weight MCs. That is, the access network device determines the MCS of the optimized user to be scheduled obtained by the last execution of step S402 according to the optimized joint transmission weight obtained by the last execution of step S402. The MCS determined based on the optimized joint transmission weight can match the performance of the PHY layer transmission weight, making the obtained MCS more reasonable and accurate.

Exemplarily, the granularity of the MCS is RBG.

Optionally, in S405, it is determined according to the MCS whether the optimized user equipment to be scheduled continues to be scheduled on the first RBG.

Exemplarily, the access network device determines whether the first user equipment continues to schedule on the first RBG according to the MCS of the first user equipment on the first RBG, where the first RBG is where the first user equipment is located. Any of all RBGs. For example, the first user equipment is scheduled on 10 RBGs (RBG1 to RBG10) in total, and the access network device will first traverse the MCSs corresponding to the 10 RBGs to obtain the largest MCS. Next, the access network device compares the MCSs corresponding to RBG1 to RBG10 with the maximum MCS one by one, and when the MCS corresponding to the RBGs in RBG1 to RBG10 is lower than the maximum MCS and reaches the first threshold, the first user equipment Scheduling will not continue on the RBG. The first threshold is a real number, which can be set according to different performance requirements, and is not limited here; the first threshold can be stored in the access network device in advance. In this way, when the channel between the first user equipment and the TRP0 and the TRP1 is a frequency-selective channel, a frequency band with poor channel quality can be avoided, thereby improving user experience.

Similarly, the access network device determines whether the second user equipment continues to schedule on the first RBG according to the MCS of the second user equipment on the first RBG. Any of the RBGs.

It should be understood that the RBGs where each user equipment is located in the optimized user equipments to be scheduled may be different, and each user equipment determines whether to continue scheduling on the RBG where it is located by referring to the above method.

S406, weighted data transmission.

Exemplarily, if step S402 is performed once, the access network device sends the third joint sending weight and the data to be sent of the first user to TRP0 and TRP1, and TRP0 and TRP1 send the third joint sending weight and the data to be sent. Send data for data weighted transmission. The access network device sends the fourth joint sending weight and the data to be sent of the first user to TRP0 and TRP1, and TRP0 and TRP1 perform data weighted transmission on the fourth joint sending weight and the data to be sent.

If step S402 is performed twice, the access network device sends the fifth joint sending weight of the first user and the data to be sent to TRP0 and TRP1, and TRP0 and TRP1 compare the fifth joint sending weight and the data to be sent. Data weighted transmission. The access network device sends the sixth joint sending weight and the data to be sent of the first user to TRP0 and TRP1, and TRP0 and TRP1 perform data weighted transmission on the sixth joint sending weight and the data to be sent.

It should be understood that the access network device sends the optimized joint transmission weight obtained by performing step S402 for the last time to TRP0 and TRP1. The TRPs for cooperative communication may not only include TRP0 and TRP1, and the number of TRPs is not limited here. The initial user equipment to be scheduled may not only include the first user equipment and the second user equipment, and the number of user equipments is not limited here.

It should be understood that the above-mentioned processes such as scheduling and MCS estimation are generally performed at the MAC layer, and the above-mentioned determination of the joint transmission weight is generally performed at the PHY layer.

The communication cooperation method 400 in this embodiment of the present application jointly optimizes MAC layer scheduling, MCS estimation, etc. between TRPs, and jointly optimizes the joint transmission weight of the PHY layer, MAC layer scheduling, MCS estimation, etc., thereby improving the The experience of edge users is improved, and the average throughput of the cell is improved.

Referring to FIG. 1 , FIG. 2 , and FIG. 3 , and referring to FIG. 5 , FIG. 5 shows a schematic flowchart of still another communication cooperation method 500 provided by an embodiment of the present application. The communication cooperation method shown in FIG. 5 involves a first network node and a second network node, wherein the first network node and the second network node may belong to the same access network device, or belong to different access networks. equipment. It should be understood that the access network device in FIG. 5 includes two network nodes is only an example, the access network device may include more than two network nodes, and the number of network nodes is not limited here. The first network node may be the first network node shown in FIG. 1 , FIG. 2 , and FIG. 3 according to the embodiment of the application, and the second network node may be the first network node shown in FIG. 1 , FIG. 2 , and FIG. 3 according to the embodiment of the application. A second network node is shown. Exemplarily, the following description takes the first network node as TRP0 and the second network node as TRP1 as an example, for convenience of description, hereinafter referred to as TRP0 and TRP1. The method 500 in this embodiment of the present application includes but is not limited to the following steps:

S501: Determine an initial to-be-scheduled user equipment and an initial transmission weight.

Exemplarily, taking TRP0 as an example, the access network device determines the first number of user equipments to be scheduled for TRP0. Optionally, the access network device can be based on the proportional fair (Proportional fair, PF) criterion, according to the PF factor in descending order, the user equipment in the cell corresponding to TRP0 selects the first number of TRP0 user equipment to be scheduled as the initial TRP0. The user equipment to be scheduled. The first number of user equipments to be scheduled for the TRP0 are the initial user equipments to be scheduled for the TRP0 determined by the access network.

Exemplarily, after determining the initial to-be-scheduled user of TRP0, the access network device may determine the first transmission weight between the first user equipment and the TRP0, and the access network device may also determine the second The second transmission weight between the user equipment and the TRP0; wherein the first user equipment and the second user equipment are included in the initial to-be-scheduled user equipment of the TRP0. The first sending weight and the second sending weight are the initial sending weights of the first user equipment and the second user equipment. The first transmission weight and the second transmission weight are included in the initial transmission weight.

Exemplarily, the method for determining the first transmission weight and the second transmission weight by the access network device is the same. The following is an example of the method for determining the first transmission weight:

The access network device acquires channel measurement information between the first user equipment and TRP0. The information measurement information may be the uplink channel estimation between the first user equipment and TRP0, or the downlink channel estimation between the first user equipment and TRP0, or the information that can reflect the relationship between the first user equipment and TRP0. Additional measurement information for channel information. The access network device may obtain the uplink channel estimation between the first user equipment and the TRP0 through the SRS sent by the first user equipment. The access network device may also obtain an uplink channel estimate between the first user equipment and the TRP0 through the DMRS sent by the first user equipment. The access network device may obtain the downlink channel estimation between the first user equipment and the TRP0 through the CSI fed back by the first user equipment. After acquiring the channel measurement information (H0) between the first user and the TRP0, the access network device performs singular value decomposition (SVD) on the H0, and takes the right singular matrix after SVD decomposition as the first The first transmission weight between the user and the TRP0.

M=UΣV ^*

Illustratively, the above m and n are positive integers.

Exemplarily, the granularity of the first sending weight and the second sending weight is a resource block group (Resource Block Group, RBG).

It should be understood that the initial to-be-scheduled user equipment of the above TRP0 may not only include two user equipments, but may also include more than two user equipments, and the number of user equipments is not limited here. The initial transmission weight of each user equipment included in the initial to-be-scheduled user equipment of the TRP0 may be determined with reference to the method for the first transmission weight described above.

S502: Determine the optimal transmission weight of the initially to-be-scheduled user equipment based on the first criterion, and determine whether to delete the user equipment according to the weight information.

Exemplarily, taking TRP0 as an example, if step S502 is performed for the first time, the access network device determines the third transmission weight between the above-mentioned first user equipment and TRP0 based on the first criterion, and the third transmission weight includes: the first weight information; the access network device determines the fourth transmission weight between the above-mentioned second user equipment and TRP0 based on the first criterion, and the fourth joint transmission weight includes the second weight information; the first criterion may be weighted and the capacity maximization criterion, it can also be the weighted minimum mean square error criterion, and it can also be other weight optimization criterion, and the weight optimization criterion is not limited here. The access network device determines whether the first user equipment and the TRP0 continue to communicate based on the first weight information; similarly, the access network device determines, based on the second weight information, whether the second user equipment and the TRP0 Whether to continue communication. The first weight information may be obtained by the access network device based on the norm of the third transmission weight, or may be obtained by the access network device based on the power of the third transmission weight; similarly, the second weight The information may be obtained by the access network device based on the norm of the fourth transmission weight, or may be obtained by the access network device based on the power of the fourth transmission weight. The norm may represent the power of the third joint transmission weight or the fourth joint transmission weight, and the access network device may determine whether to delete the first user or the second user according to the norm. It is assumed here that the access network device determines, based on the first weight information and the second weight information, that both the first user and the second user continue to communicate with the first TRP. The third sending weight and the fourth sending weight are the optimized sending weights for performing this step S402; the first user equipment and the second user equipment are the user equipments to be scheduled after performing the optimization of this step S402 .

Exemplarily, if step S502 is performed for the second time, the access network device obtains the first user equipment, the second user equipment, the third sending weight and the fourth sending right obtained by executing step S502 for the first time. value, and based on the first criterion, a fifth transmission weight between the first user equipment and TRP0 and a sixth transmission weight between the second user equipment and TRP0 are determined. The fifth transmission weight includes third weight information, and the sixth transmission weight includes fourth weight information. The access network device determines whether the first user equipment and the first TRP continue to communicate based on the third weight information; similarly, the access network device determines, based on the fourth weight information, whether the second user equipment and the first TRP continue to communicate Whether to continue communication. The fifth transmission weight and the sixth transmission weight are the optimized transmission weights for performing this step S502; the first user equipment and the second user equipment are the user equipments to be scheduled after performing the optimization in this step S502 .

Exemplarily, the granularity of the third transmission weight, the fourth transmission weight, the fifth transmission weight and the sixth transmission weight is RBG.

It should be understood that step S502 may be performed multiple times, and for the method performed for the third time and the previous time, reference may be made to the method performed for the second time in step S502 above. The initial to-be-scheduled user equipment of the above TRP0 may not only include the first user equipment and the second user equipment, but may also include more than two user equipments, and the number of user equipments is not limited here. For the method for determining the optimal transmission weight of each user equipment included in the above-mentioned initial user equipment to be scheduled, and the method for whether to delete each user equipment, reference may be made to the description of step S502.

Exemplarily, TRP1 may determine the optimized user equipment (eg, third user equipment, fourth user equipment) of TRP1 according to the above-mentioned method of TRP0.

S503, it is judged whether the number of iterations in step S502 reaches the iteration threshold.

Exemplarily, the access network device determines whether the number of iterations in step S502 reaches the iteration threshold. If the number of iterations does not reach the threshold, step S502 is performed, and if the number of iterations reaches the threshold, step S504 is performed. The iteration threshold may be an integer greater than or equal to 1 configured in advance in the access network, such as 10.

S504: Obtain the optimized user equipments of TRP0 and TRP1, and perform joint transmission weight calculation and corresponding MCS calculation based on the first criterion.

Exemplarily, the access network device obtains the optimized user equipment of TRP0 and TRP1, for example, the first user equipment and the second user equipment of TRP0 obtained by the access network device, and the third user equipment and the fourth user equipment of TRP1. The first user equipment and the second user equipment are included in the optimized user equipment of TRP0; the third user equipment and the fourth user equipment are included in the optimized user equipment of TRP1. Then the access network device acquires the channel measurement information between the first user equipment, the second user equipment, the third user equipment and the fourth user equipment and TRP0 and TRP1. Then the access network device splices the channel measurement information between the user equipment and TRP0 and the channel measurement information between TRP1 to obtain the spliced channel measurement information H1, H2, H3 and H4. Wherein H1 is the channel measurement information after splicing between the first user equipment and TRP0 and TRP1, similarly H2, H3 and H4 are the second user equipment, the third user equipment and the fourth user equipment and TRP0 respectively and the spliced channel measurement information between TRP1s. For the specific splicing method, refer to the description of step S401. The access network device determines the joint transmission weight of the first user equipment according to H1, H2, H3, and H4 and based on the first criterion. Similarly, the access network device determines the joint transmission weight of the second user equipment, the joint transmission weight of the third user equipment, and the joint transmission weight of the fourth user equipment according to H2, H3, H4 and based on the first criterion. Send weights. The first criterion may be a weighted sum capacity maximization criterion, a weighted minimum mean square error criterion, or other weight optimization criterion, and the weight optimization criterion is not limited here. The access network device determines the corresponding MCS of the first user equipment according to the joint sending weight of the first user equipment. Similarly, the access network device may determine the corresponding MCSs of the second user equipment, the third user equipment, and the fourth user equipment. The MCS determined based on the joint transmission weight can match the performance of the transmission weight of the PHY layer, so that the obtained MCS is more reasonable and accurate.

Optionally, at S505, it is determined according to the MCS whether the optimized user equipment to be scheduled continues to be scheduled on the first RBG. For the specific method, refer to the description of S405, which will not be repeated here.

S506, weighted data transmission.

For the specific method, refer to the description of S406, which will not be repeated here.

The communication cooperation method 500 in this embodiment of the present application jointly optimizes MAC layer scheduling, MCS estimation, etc. between TRPs, and jointly optimizes the joint transmission weight of the PHY layer, MAC layer scheduling, MCS estimation, etc., thereby improving the The experience of edge users is improved, and the average throughput of the cell is improved.

FIG. 6 is a schematic structural diagram of a possible communication apparatus provided by an embodiment of the present application. These communication apparatuses can be used to implement the functions of the access network equipment in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiment of the present application, the communication device may be the access network device in the foregoing method embodiment, or may be a module (eg, a chip) applied to the foregoing access network device.

As shown in FIG. 6 , the communication apparatus 600 includes a processing module 610 and a transceiver module 620 . The communication apparatus 600 is configured to implement the functions of the access network device in the embodiment corresponding to FIG. 3 . Exemplarily, the access network device may include a first network node and a second network node. The first network is hereinafter referred to as the first network node. The node is TRP0, and the second network node is TRP1 as an example for description. For convenience of description, hereinafter referred to as TRP0 and TRP1.

When the communication apparatus 600 is used to implement the function of the access network device in the method embodiment shown in FIG. 3, exemplarily:

The processing module 610 is configured to determine the initial to-be-scheduled user equipment and the initial joint transmission weight. Exemplarily, the processing module 610 is configured to determine the first number of user equipments to be scheduled for the first transmission reception point (TRP) and the second number of user equipments to be scheduled for the second TRP; the processing module 610 is further configured to determine the The first joint transmission weight between the first user equipment and the first TRP and the second TRP among the first number of scheduled user equipments and the second number of scheduled user equipments; the processing module 610 further uses for determining a second joint transmission weight between a second user equipment among the first number of scheduled user equipments and the second number of scheduled user equipments and the first TRP and the second TRP.

The processing module 610 is further configured to determine the optimal joint transmission weight of the user equipment to be scheduled initially based on the first criterion, and determine whether to delete the user equipment according to the weight information. Exemplarily, the processing module 610 is further configured to determine, based on the first criterion, a third joint transmission weight between the first user equipment and the first TRP and the second TRP, the third The joint sending weight includes first weight information; the processing module 610 is further configured to determine a fourth joint between the second user equipment and the first TRP and the second TRP based on the first criterion sending weight, the fourth joint sending weight includes second weight information; the processing module 610 is further configured to determine the relationship between the first user equipment and the first TRP and the first user equipment based on the first weight information Whether the two TRPs continue to perform cooperative communication, the processing module 610 is further configured to determine, based on the second weight information, whether the second user equipment continues to perform cooperative communication with the first TRP and the second TRP.

The transceiver module 620 is used for weighted data transmission.

As shown in FIG. 6 , the communication apparatus 600 includes a processing module 610 and a transceiver module 620 . The communication apparatus 600 is configured to implement the functions of the access network device in the embodiment corresponding to FIG. 4 . Exemplarily, the access network device may include a first network node and a second network node. The first network is hereinafter referred to as the first network node. The node is TRP0, and the second network node is TRP1 as an example for description. For convenience of description, hereinafter referred to as TRP0 and TRP1.

When the communication apparatus 600 is used to implement the function of the access network device in the method embodiment shown in FIG. 4, exemplarily:

The processing module 610 is further configured to determine, based on the first criterion, a third joint transmission weight between the first user equipment and the first TRP and the second TRP, where the third joint transmission weight including first weight information; the processing module 610 is further configured to determine, based on the first criterion, a fourth joint transmission weight between the second user equipment and the first TRP and the second TRP, The fourth joint transmission weight includes second weight information.

The processing module 610 is further configured to determine whether the number of iterations reaches the iteration threshold.

The processing module 610 is further configured to determine the optimized MCS of the user equipment to be scheduled according to the optimized joint transmission weight. Exemplarily, the processing module 610 is further configured to determine a modulation and coding strategy (MCS) corresponding to the first user equipment according to the third joint transmission weight, and/or the processing module 610 is further configured to The fourth joint transmission weight determines the MCS corresponding to the second user equipment.

Optionally, the processing module 610 is further configured to determine whether the optimized user equipment to be scheduled continues to be scheduled on the first RBG according to the MCS. Exemplarily, the processing module 610 is further configured to determine, according to the MSC corresponding to the first user equipment, whether the first user equipment continues to schedule on the first RBG, where the first RBG is the first user any one of all RBGs where the device is located; and/or, the processing module 610 is further configured to determine, according to the MSC corresponding to the second user equipment, whether the second user equipment continues to schedule on the first RBG, so The first RBG is any one of all RBGs where the second user equipment is located.

The transceiver module 620 is used for weighted data transmission. Exemplarily, the transceiver module 620 is configured to send the third joint sending weight of the first user and the data to be sent to TRP0 and TRP1, and TRP0 and TRP1 perform data weighting on the third joint sending weight and the data to be sent. send. The transceiver module 620 is further configured to send the fourth joint transmission weight and the data to be sent of the first user to TRP0 and TRP1, and TRP0 and TRP1 perform data weighted transmission on the fourth joint transmission weight and the data to be sent.

The communication apparatus 600 may also be used to implement the functions of the access network device in the embodiment corresponding to FIG. 5 . Exemplarily, the access network device may include a first network node and a second network node. A network node is TRP0, and the second network node is TRP1 as an example for description, and for convenience of description, hereinafter referred to as TRP0 and TRP1.

When the communication apparatus 600 is used to implement the function of the access network device in the method embodiment shown in FIG. 5, exemplarily:

The processing module 610 is configured to determine the initial to-be-scheduled user equipment and the initial transmission weight. Exemplarily, the processing module 610 is used for the first number of user equipments to be scheduled in TRP0 and the second number of user equipments to be scheduled in TRP1; the processing module 610 is also used for determining the number of user equipments between the first user equipment and the TRP0. a transmission weight, and the second transmission weight between the second user equipment and the TRP0; the processing module 610 is further configured to determine the first transmission weight between the third user equipment and the TRP1, and the fourth user The second transmission weight between the device and this TRP1.

The processing module 610 is further configured to determine the optimal transmission weight of the user equipment to be scheduled initially based on the first criterion, and determine whether to delete the user equipment according to the weight information. Exemplarily, the processing module 610 is further configured to determine a third transmission weight between the first user equipment and TRP0 based on the first criterion, where the third transmission weight includes the first weight information; the access network device is based on the first The criterion determines the fourth transmission weight between the above-mentioned second user equipment and TRP0, and the fourth transmission weight includes the second weight information; the processing module 610 is further configured to determine the first weight information based on the first weight information and the second weight information. A user equipment and the second user equipment are not deleted user equipments; the processing module 610 is further configured to determine that the third user equipment and the fourth user equipment are not deleted user equipments;

The processing module 610 is further configured to obtain the optimized user equipment of TRP0 and TRP1, and perform joint transmission weight calculation and corresponding MCS calculation based on the first criterion.

The transceiver module 620 is used for weighted data transmission.

The above are only some examples when the communication apparatus 600 is used to implement the functions of the access network equipment in the method embodiment shown in FIG. 3 , FIG. 4 or FIG. 5 , the functions of the processing module 610 and the transceiver module 620 in the communication apparatus 600 , the operation of the access network device in the method embodiment shown in FIG. 3 , FIG. 4 or FIG. 5 may be referred to.

As shown in Figure 7. The communication device 700 includes a processor 710 and an interface circuit 730 . The processor 710 and the interface circuit 730 are coupled to each other. It can be understood that the interface circuit 730 can be a transceiver or an input-output interface.

Optionally, the communication apparatus 700 may further include a memory 720 for storing instructions executed by the processor 720 or input data required by the processor 710 to execute the instructions or data generated after the processor 710 executes the instructions.

When the communication apparatus 700 is used to implement the functions of the access network equipment shown in FIG. 3 , FIG. 4 or FIG. 5 , the processor 710 is used to implement the functions of the above-mentioned processing module 610 , and the interface circuit 730 is used to implement the functions of the above-mentioned transceiver module 620 Function.

Optionally, the communication apparatus 700 further includes a bus 740 through which the processor 710 , the interface circuit 730 and the memory 720 can communicate.

An embodiment of the present application further provides a system chip, where the system chip includes an input and output interface, at least one processor, at least one memory, and a bus, where the at least one memory is used to store instructions, and the at least one processor is used to call the at least one instructions of the memory to perform operations of the methods of the various aspects described above.

In the embodiments of the present application, it should be noted that the foregoing method embodiments in the embodiments of the present application may be applied to a processor, or implemented by a processor. A processor may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

The above-mentioned embodiments may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product may include one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic disks), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), and the like.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software 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.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, 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.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A communication collaboration method, comprising:

The access network device determines a first number of to-be-scheduled user equipments of the first network node and a second number of to-be-scheduled user equipments of the second network node;

The access network device determines a first association between the first user equipment in the first number of scheduled user equipments and the second number of scheduled user equipments and the first network node and the second network node send weight;

The access network device determines a second association between a second user equipment in the first number of scheduled user equipments and the second number of scheduled user equipments and the first network node and the second network node send weight;

The access network device determines, based on the first criterion, a third joint transmission weight between the first user equipment and the first network node and the second network node, and the third joint transmission weight including first weight information; the access network device determines, based on the first criterion, a fourth joint sending weight between the second user equipment and the first network node and the second network node, The fourth joint transmission weight includes second weight information;

The access network device determines, based on the first weight information, whether the first user equipment continues to perform cooperative communication with the first network node and the second network node, the access network device is based on the The second weight information determines whether the second user equipment continues to perform cooperative communication with the first network node and the second network node.
The method according to claim 1, wherein the method further comprises:

The access network device determines a modulation and coding strategy (MCS) corresponding to the first user equipment according to the third joint transmission weight, and/or the access network device determines according to the fourth joint transmission weight The value determines the MCS corresponding to the second user equipment.
The method according to claim 2, wherein the method further comprises:

The access network device determines, according to the MSC corresponding to the first user equipment, whether the first user equipment continues to schedule on a first resource block group (Resource Block Group, RBG), where the first RBG is the any one of all the RBGs of the first user equipment;

and / or,

The access network device determines, according to the MSC corresponding to the second user equipment, whether the second user equipment continues to schedule on the first RBG, where the first RBG is one of all RBGs of the second user equipment any of the .
The method according to any one of claims 1-3, wherein the first criterion comprises a weighted sum capacity maximization criterion.
The method according to any one of claims 1-4, wherein the first transmission weight information includes a norm of the third joint transmission weight, and the second transmission weight information includes the first transmission weight. The norm of the four joint transmission weights.
The method according to any one of claims 1-5, wherein the access network device determines that the first user equipment in the first number of scheduled user equipments and the second number of scheduled user equipments is the same as the one in the second number of scheduled user equipments. The first joint sending weight between the first network node and the second network node includes:

The access network device acquires first channel measurement information and second channel measurement information of the first user equipment, where the first channel measurement information is the communication between the first user equipment and the first network node. channel measurement information, where the second channel measurement information is channel measurement information between the first user equipment and the second network node;

The access network device splices the first channel measurement information and the second channel measurement information to obtain third channel measurement information;

The access network device performs singular value decomposition on the third channel measurement information, and takes its right singular vector as the first joint transmission weight of the first user equipment.
The method according to any one of claims 1-5, wherein the access network device determines that the second user equipment in the first number of scheduled user equipments and the second number of scheduled user equipments is the same as the second user equipment in the second number of scheduled user equipments. The second joint sending weight between the first network node and the second network node includes:

The access network device acquires fourth channel measurement information and fifth channel measurement information of the second user equipment, where the fourth channel measurement information is the communication between the second user equipment and the first network node. Channel measurement information, where the fifth channel measurement information is channel measurement information between the second user equipment and the second network node;

The access network device splices the fourth channel measurement information and the fifth channel measurement information to obtain sixth channel measurement information;

The access network device performs singular value decomposition on the sixth channel measurement information, and takes its right singular vector as the second joint transmission weight of the second user equipment.
The method according to claim 6 or 7, wherein the first channel measurement information and the second channel measurement information are obtained based on uplink sounding reference signal (SRS) measurement of the first user equipment, or , the first channel measurement information and the second channel measurement information are obtained based on channel state information (CSI) fed back by the first user equipment;

The fourth channel measurement information and the fifth channel measurement information are obtained based on the uplink channel SRS measurement of the second user equipment, or the fourth channel measurement information and the fifth channel measurement information are based on the first channel measurement information. 2. Obtaining the CSI fed back by the user equipment.
The method according to any one of claims 1-8, wherein the access network device determines a first number of user equipments to be scheduled for the first network node and a second number of users to be scheduled for the second network node equipment, including:

The network device determines the first number of user equipments to be scheduled and the second number of user equipments to be scheduled based on a second criterion, where the second criterion includes a proportional fairness (PF) criterion.
A communication collaboration method, comprising:

The access network device determines a first number of to-be-scheduled user equipments of the first network node and a second number of to-be-scheduled user equipments of the second network node;

The access network device determines a first association between the first user equipment in the first number of scheduled user equipments and the second number of scheduled user equipments and the first network node and the second network node send weight;

The access network device determines a second association between a second user equipment in the first number of scheduled user equipments and the second number of scheduled user equipments and the first network node and the second network node send weight;

The access network device determines a third joint sending weight between the first user equipment and the first network node and the second network node based on the first criterion; the access network device determines the third joint sending weight based on the the first criterion, and determine a fourth joint transmission weight between the second user equipment and the first network node and the second network node;

The access network device determines a modulation and coding strategy (MCS) corresponding to the first user equipment according to the third joint transmission weight, and the access network device determines the The MCS corresponding to the second user equipment.
The method of claim 10, wherein the method further comprises:

The third joint sending weight includes first weight information, and the access network device determines whether the first user equipment, the first network node and the second network node are based on the first weight information. continue collaborative communications;

The fourth joint sending weight includes second weight information, and the access network device determines whether the second user equipment, the first network node and the second network node are based on the second weight information. Continue collaborative communication.
The method according to claim 10 or 11, wherein the method further comprises:

The access network device determines, according to the MSC corresponding to the first user equipment, whether the first user equipment continues to schedule on the first RBG, where the first RBG is one of all RBGs of the first user equipment any of the;

and / or,

The access network device determines, according to the MSC corresponding to the second user equipment, whether the second user equipment continues to schedule on the first RBG, where the first RBG is one of all RBGs of the second user equipment any of the .
The method of any one of claims 10-12, wherein the first criterion comprises a weighted sum capacity maximization criterion.
The method according to any one of claims 11-13, wherein,

The first transmission weight information includes a norm of the third joint transmission weight, and the second transmission weight information includes a norm of the fourth joint transmission weight.
The method according to any one of claims 10-14, wherein the access network device determines that the first user equipment among the first number of scheduled user equipments and the second number of scheduled user equipments is the same as the one of the first number of scheduled user equipments. The first joint sending weight between the first network node and the second network node includes:

The access network device acquires first channel measurement information and second channel measurement information of the first user equipment, where the first channel measurement information is the communication between the first user equipment and the first network node. channel measurement information, where the second channel measurement information is channel measurement information between the first user equipment and the second network node;

The access network device splices the first channel measurement information and the second channel measurement information to obtain third channel measurement information;

The access network device performs singular value decomposition on the third channel measurement information, and takes its right singular vector as the first joint transmission weight of the first user equipment.
The method according to any one of claims 10-14, wherein the access network device determines that the second user equipment in the first number of scheduled user equipments and the second number of scheduled user equipments is the same as the second user equipment in the second number of scheduled user equipments. The second joint sending weight between the first network node and the second network node includes:

The access network device acquires fourth channel measurement information and fifth channel measurement information of the second user equipment, where the fourth channel measurement information is the communication between the second user equipment and the first network node. Channel measurement information, where the fifth channel measurement information is channel measurement information between the second user equipment and the second network node;

The access network device splices the fourth channel measurement information and the fifth channel measurement information to obtain sixth channel measurement information;

The access network device performs singular value decomposition on the sixth channel measurement information, and takes its right singular vector as the second joint transmission weight of the second user equipment.
The method according to claim 15 or 16, wherein the first channel measurement information and the second channel measurement information are obtained based on uplink sounding reference signal (SRS) measurement of the first user equipment, or , the first channel measurement information and the second channel measurement information are obtained based on channel state information (CSI) fed back by the first user equipment;

The fourth channel measurement information and the fifth channel measurement information are obtained based on the uplink channel SRS measurement of the second user equipment, or the fourth channel measurement information and the fifth channel measurement information are based on the first channel measurement information. 2. Obtaining the CSI fed back by the user equipment.
The method according to any one of claims 10-17, wherein the access network device determines a first number of user equipments to be scheduled on the first network node and a second number of users to be scheduled on the second network node equipment, including:

The network device determines the first number of user equipments to be scheduled and the second number of user equipments to be scheduled based on a second criterion, where the second criterion includes a proportional fairness (PF) criterion.
A communication device, applied to an access network device, characterized in that it includes a method for executing the method according to any one of claims 1-9, or for executing the method according to any one of claims 10-18. module.
A communication device, applied to access network equipment, is characterized in that it includes a processor and an interface circuit, and the interface circuit is used to receive signals from other devices other than the device and transmit to the processor or transfer signals to the processor. The signal from the processor is sent to other devices than the device, and the processor is used to implement the method of any one of claims 1-9, or to implement the claims, by means of logic circuits or executing code instructions The method of any of 10-18.
A computer-readable storage medium, characterized in that a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is executed by a computing device, any one of claims 1-9 is implemented. the method described, or implement the method described in any one of claims 10-18.
A computer program product, the computer program product comprising instructions, characterized in that, when the instructions are executed by a computer device, the method of any one of claims 1-9, or any one of claims 10-18 is implemented method described in item.
A communication system comprising one or more of: a communication device as claimed in claim 19 or 20; a computer readable storage medium as claimed in claim 21; and a computer program product as claimed in claim 22.