CN115134822A

CN115134822A - Communication cooperation method and device

Info

Publication number: CN115134822A
Application number: CN202110315973.4A
Authority: CN
Inventors: 文敏; 楼群芳; 万莉; 王潇涵; 龚名新
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2022-09-30
Also published as: WO2022199322A1

Abstract

The application provides a communication cooperation method and a device, and the method comprises the steps that an access network device determines users to be scheduled of a first network node and a second network node and the combined sending weight of the users to be scheduled. The access network equipment optimizes the combined sending weight value based on the first criterion, and optimizes the user to be scheduled according to the optimized combined sending weight value. By adopting the embodiment of the application, the scheduling and the like among the network nodes can be optimized in a combined manner, and the combined sending weight and the scheduling and the like can be optimized in a combined manner, so that the experience of edge users is improved, and the average throughput of the cell is improved.

Description

Communication cooperation method and device

Technical Field

The present application relates to the field of communications, and in particular, to a method and an apparatus for communication cooperation applicable to a distributed antenna array scenario.

Background

In a wireless communication cellular network, the edge user rate between multiple cells is an important index affecting the user experience in the network, wherein co-channel interference and signal energy are key factors determining the performance of the edge user. 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 increase the Signal power are important issues to be researched in the wireless communication algorithm. In view of this, the communication cooperation is a solution in a borderless cell networking form for improving the edge user experience in a distributed antenna array scenario and increasing the average cell capacity, and is intended to convert TRP interference into a useful signal through coherent signal Transmission of combining TRP for a user in an edge area between multiple Transmission Reception Points (TRPs), so that the signal power can be enhanced and the inter-TRP interference can be reduced, thereby improving the SINR of the user. In addition, a joint precoding sending weight value can be designed through the joint space freedom degree of multiple TRPs, and the maximization of the whole capacity of the system is realized.

However, in the current solution for communication cooperation of a distributed antenna array scene, the scheduling process of each cell does not comprehensively consider the mutual interference of users among multiple cells, and the scheduling processes are also not matched with the precoding weights, that is, the performance of the user considered by the scheduling processes is not matched with the actual air interface transmission capability of the user, which may cause low efficiency of multi-cell cooperation, reduced air interface performance of the user, and even negative gains in the average throughput of the cell and the performance of edge users.

Therefore, for the current distributed antenna array scene communication cooperation solution, how to enable the scheduling and other processes of each cell to consider the mutual interference among the users in the multiple cells and match the precoding weight of the physical layer, thereby improving the edge user experience, and becomes a problem to be solved urgently.

Disclosure of Invention

The embodiment of the application provides a communication cooperation method and device, which are applied to a distributed antenna array scene and can improve the experience of edge users, and further improve the average throughput of a cell.

The first aspect of the embodiment of the present application discloses a communication cooperation method, including: the access network equipment determines a first quantity of user equipment to be scheduled of a first network node and a second quantity of user equipment to be scheduled of a second network node; the access network equipment determines a first joint sending weight between a first user equipment in the first quantity of scheduling user equipment and the second quantity of scheduling user equipment and the first network node and the second network node; the access network device determines a second joint sending weight between a second user equipment in the first quantity scheduling user equipment and the second quantity scheduling user equipment and the first network node and the second network node; the access network device determines a third association transmission weight between the first user equipment and the first and second network nodes based on a first criterion, wherein the third association transmission weight comprises first weight information; the access network device determines a fourth joint sending weight value between the second user equipment and the first network node and the second network node based on the first criterion, wherein the fourth joint sending weight value comprises second weight information; the access network device determines whether the first user equipment and the first network node and the second network node continue cooperative communication based on the first weight information, and the access network device determines whether the second user equipment and the first network node and the second network node continue cooperative communication based on the second weight information.

Based on the method, the access network device may jointly optimize the scheduled user equipment for 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 perform joint optimization on flows such as scheduling between network nodes, and can perform joint optimization on joint sending weight and scheduling, so that the experience of edge users can be improved, and the average throughput of a cell can be improved.

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

Based on the method, the access network equipment can perform joint optimization on the joint sending weight and MCS estimation, so that the experience of edge users can be improved, and the average throughput of the cell can be improved.

With reference to the first aspect, in some embodiments of the first aspect, the access network device determines, according to an MSC corresponding to the first user equipment, whether the first user equipment continues to be scheduled on a first Resource Block Group (RBG), where the first RBG is any one of all RBGs where the first user equipment is located; and/or the access network equipment determines whether the second user equipment continues to be scheduled on a first RBG according to the MSC corresponding to the second user equipment, wherein the first RBG is any one of all RBGs in which the second user equipment is located.

Based on the method, the access network equipment can avoid the frequency band with poor channel quality in the frequency selective channel scene, so that the experience of edge users can be improved, and the average throughput of the cell can be improved.

With reference to 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.

With reference to the first aspect, in certain 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 certain embodiments of the first aspect, the first transmission weight information comprises a norm of the third combined transmission weight, and the second transmission weight information comprises a norm of the fourth combined transmission weight. The norm may characterize 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 certain embodiments of the first aspect, the determining, by the access network device, a first joint transmission weight between a first user equipment of the first and second numbers of scheduled user equipments and the first and second network nodes includes: the access network equipment acquires first channel measurement information and second channel measurement information of the first user equipment, wherein the first channel measurement information is channel measurement information between the first user equipment and the first network node, and the second channel measurement information is channel measurement information between the first user equipment and the second network node; the access network equipment splices the first channel measurement information and the second channel measurement information to obtain third channel measurement information; and the access network equipment carries out singular value decomposition on the third channel measurement information, and takes a right singular vector thereof as the first joint sending weight of the first user equipment.

With reference to the first aspect, in some implementations of the first aspect, the determining, by the access network device, a second combined transmission weight between a second user equipment of the first and second numbers of scheduled user equipments and the first and second network nodes includes: the access network equipment acquires fourth channel measurement information and fifth channel measurement information of the second user equipment, wherein the fourth channel measurement information is channel measurement information between the second user equipment and the first network node, and the fifth channel measurement information is channel measurement information between the second user equipment and the second network node; the access network equipment splices the fourth channel measurement information and the fifth channel measurement information to obtain sixth channel measurement information; and the access network equipment performs singular value decomposition on the sixth channel measurement information, and takes a right singular vector thereof as the second combined sending weight of the second user equipment.

With reference to the first aspect, in certain embodiments of the first aspect, the first channel measurement information and the second channel measurement information are obtained based on uplink channel 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 uplink channel SRS measurement of the second user equipment, or the fourth channel measurement information and the fifth channel measurement information are obtained based on CSI fed back by the second user equipment.

With reference to the first aspect, in certain embodiments of the first aspect, the determining, by the access network device, a first number of user equipments to be scheduled by a first network node and a second number of user equipments to be scheduled by a second network node includes: the network device determines the first number of user devices to be scheduled and the second number of user devices to be scheduled based on a second criterion, which includes a Proportional Fair (PF) criterion.

A second aspect of the embodiments of the present application discloses a communication cooperation method, including: the method comprises the steps that the access network equipment determines a first quantity of user equipment to be scheduled of a first network node and a second quantity of user equipment to be scheduled of a second network node; the access network device determines a first joint transmission weight between a first user device of the first quantity of scheduling user devices and the second quantity of scheduling user devices and the first network node and the second network node; the access network equipment determines a second combined sending weight between a second user equipment of the first quantity of scheduling user equipment and the second quantity of scheduling user equipment and the first network node and the second network node; the access network device determining a third joint transmission weight between the first user equipment and the first network node and the second network node based on a first criterion; the access network device determines a fourth joint sending weight between the second user equipment and the first network node and the second network node based on the first criterion; and the access network equipment determines a Modulation and Coding Scheme (MCS) corresponding to the first user equipment according to the third combined sending weight, and the access network equipment determines the MCS corresponding to the second user equipment according to the fourth combined sending weight.

With reference to the second aspect, in some embodiments of the second aspect, the third joint transmission weight includes first weight information, and the access network device determines, based on the first weight information, whether the first user equipment and the first and second network nodes continue to perform cooperative communication; the fourth joint sending weight value comprises second weight information, and the access network device determines whether the second user equipment, the first network node and the second network node continue cooperative communication or not based on the second weight information.

Based on the method, the access network device may jointly optimize the scheduled user equipment for 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 perform joint optimization on scheduling and the like among network nodes, and can perform joint optimization on joint sending weight, scheduling and the like, so that the experience of edge users can be improved, and the average throughput of a cell can be improved.

With reference to the second aspect, in some embodiments of the second aspect, 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 RBG, where the first RBG is any one of all RBGs where the first user equipment is located; and/or the access network equipment determines whether the second user equipment continues to be scheduled on a first RBG according to the MSC corresponding to the second user equipment, wherein the first RBG is any one of all RBGs in which the second user equipment is located.

With reference to the second aspect, in certain embodiments of the second aspect, the first criterion includes a weighting and a capacity maximization criterion.

With reference to the second aspect, in some embodiments 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 embodiments of the second aspect, the first transmission weight information includes a norm of the third combined transmission weight, and the second transmission weight information includes a norm of the fourth combined transmission weight. The norm may characterize 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 embodiments of the second aspect, the determining, by the access network device, a first joint transmission weight between a first user equipment of the first and second numbers of scheduled user equipments and the first and second network nodes includes: the access network equipment acquires first channel measurement information and second channel measurement information of the first user equipment, wherein the first channel measurement information is channel measurement information between the first user equipment and the first network node, and the second channel measurement information is channel measurement information between the first user equipment and the second network node; the access network equipment splices the first channel measurement information and the second channel measurement information to obtain third channel measurement information; and the access network equipment carries out singular value decomposition on the third channel measurement information, and takes a right singular vector thereof as the first joint sending weight of the first user equipment.

With reference to the second aspect, in some embodiments of the second aspect, the determining, by the access network device, a second combined transmission weight between a second user equipment of the first and second numbers of scheduled user equipments and the first and second network nodes includes: the access network equipment acquires fourth channel measurement information and fifth channel measurement information of the second user equipment, wherein the fourth channel measurement information is channel measurement information between the second user equipment and the first network node, and the fifth channel measurement information is channel measurement information between the second user equipment and the second network node; the access network equipment splices the fourth channel measurement information and the fifth channel measurement information to obtain sixth channel measurement information; and the access network equipment performs singular value decomposition on the sixth channel measurement information, and takes a right singular vector thereof as the second combined sending weight of the second user equipment.

With reference to the second aspect, in some embodiments of the second aspect, the first channel measurement information and the second channel measurement information are obtained based on uplink channel 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 uplink channel SRS measurement of the second user equipment, or the fourth channel measurement information and the fifth channel measurement information are obtained based on CSI fed back by the second user equipment.

With reference to the second aspect, in some embodiments of the second aspect, the determining, by the access network device, 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 includes: the network device determines the first number of user devices to be scheduled and the second number of user devices to be scheduled based on a second criterion, which includes a Proportional Fair (PF) criterion.

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

A fourth aspect of the embodiments of the present application provides a communication device, which is applied to an access network apparatus, and includes a processor and an interface circuit, where the interface circuit is configured to receive a signal from a device other than the device and transmit the signal to the processor or send the signal from the processor to the device other than the device, and the processor is configured to implement, through a logic circuit or execute code instructions, the method described in the first aspect or a possible implementation manner of the first aspect, or the method described in the second aspect or a possible implementation manner of the second aspect.

A fifth aspect of embodiments of the present application provides a computer-readable storage medium, in which a computer program or instructions are stored, which, when executed by a computing device, implement the method described in the first aspect or in a possible implementation manner of the first aspect, or implement the method described in the second aspect or a possible implementation manner of the second aspect.

A sixth aspect of embodiments of the present application provides a computer program product containing a computer program or instructions for implementing the method described in the first aspect or in the possible implementations of the first aspect, or for implementing the method described in the second aspect or in the possible implementations of the second aspect, when the computer program or instructions are executed by a computing device.

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

Drawings

Fig. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application;

fig. 2 is a schematic flow chart of a communication cooperation method according to an embodiment of the present application;

fig. 3 is a further schematic flowchart of a communication cooperation method according to an embodiment of the present application;

fig. 4 is a further schematic flowchart of a communication cooperation method according to an embodiment of the present application;

fig. 5 is a further schematic flow chart of a communication cooperation method according to an embodiment of the present application;

fig. 6 is a schematic block diagram of a communication device according to an embodiment of the present application;

fig. 7 is a further schematic block diagram of a communication device according to an embodiment of the present application.

Detailed Description

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

It should be understood that, in the embodiment of the present application, the sequence numbers of the processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the inherent logic of the processes, and should not constitute any limitation to the implementation process of the embodiment of the present application.

It should be understood that, in the embodiments of the present application, the terms are generally numbered for convenience of description, and the numbering does not mean that there is a difference in order or priority between the terms, such as "first user" and "second user", wherein "first" and "second" are generally only used for distinguishing two sets of information, and should not be used to limit the implementation process of the embodiments of the present application.

It is to be understood that in the embodiments of the present application, "at least one" means one or more, "a plurality" means two or more. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein 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 an association relationship between associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. It should be understood that the character "/" appearing in the embodiments of the present application generally indicates that the former and latter associated objects are in an "or" relationship.

The method and the device provided by the embodiment of the application can be applied to a communication system. Fig. 1 shows a schematic diagram of a communication system architecture. The communication system 100 comprises 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 respective cells. The communication system 100 further comprises 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 a cell of the first network node 110; the terminal device 140 is located at the edge of the first network node 110, so that the first network node 110 and the second network node 120 can perform cooperative communication with the terminal device 140 at the same time, which not only can enhance the received signal power of the terminal device 140, but also can reduce the interference on the terminal device 140, 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 that the first network node 110 and the second network node 120 can perform cooperative communication with the terminal device 150 at the same time, which can enhance the received signal power of the terminal device 150, and reduce the interference on the terminal device 150, thereby improving the experience of the terminal device 150; the terminal device 160 is not at an edge user of the cell of the second network node 120 and therefore only communicates with the second network node 120.

The method and apparatus provided in the embodiments of the present application may be applied to various communication systems, for example, a 4th generation (4G) communication system, a 4.5G communication system, a 5G communication system, a system in which multiple communication systems are integrated, or a communication system that evolves in the future (for example, a 5.5G communication system or a 6G communication system). Such as a Long Term Evolution (LTE) system, a New Radio (NR) system, a wireless fidelity (WiFi) system, and a 3rd generation partnership project (3 GPP) -related communication system, and the like, which are not limited in the present application.

The access network device in the embodiment of the present application may be any device having a transceiving function. The access network device may be a device providing wireless communication function service for a communication device, and is generally located on a network side, including but not limited to: a next generation base station (gnnodeb, gNB) in a fifth generation (5th generation, 5G) communication system, an evolved Node B (eNB) in an LTE system, a home base station (e.g., home evolved NodeB or home Node B, HNB), a Base Band Unit (BBU), and the like. In a network configuration, the access network device may comprise a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a RAN device comprising a CU node and a DU node, or a control plane CU node and a user plane CU node, and a RAN device of a DU node. The access network device provides service for a cell, and the communication device communicates with a base station through a transmission resource (e.g., a frequency domain resource or a time frequency resource) used by the cell, where the cell may be a cell corresponding to the base station (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell (small cell), where the small cell may include: urban cells (metro cells), micro cells (pico cells), femto cells (pico cells), and the like, and these small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services. The access network device may also be a device providing a wireless communication service for a terminal device in a V2X communication system, a wireless controller in a Cloud Radio Access Network (CRAN) scenario, a relay station, a vehicle-mounted device, a wearable device, a network device in a future evolution network, and the like, and a specific implementation form of the embodiment of the present application is not limited.

In addition, in the embodiment of the present application, the first network node and the second network node may be devices in the RAN, or RAN nodes that access the communication device to the wireless network. For example, by way of example and not limitation, there may be: a Transmission Reception Point (TRP), a Transmission Point (TP), a Base Transceiver Station (BTS), and the like.

The terminal equipment in the embodiment of the application is equipment with a wireless transceiving function, can be deployed on land and comprises an indoor or outdoor, handheld, wearable or vehicle-mounted terminal; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a mobile phone (mobile phone), a tablet personal computer (Pad), a computer with a wireless transceiving function, a terminal in industrial control (industrial control), a vehicle-mounted terminal device, a terminal in self driving (self driving), a terminal in assisted driving, a terminal in remote medical treatment (remote medical), a terminal in smart grid (smart grid), a terminal in transportation safety (transportation safety), a terminal in smart city (smart city), a terminal in smart home (smart home), a terminal in internet of things (IoT) system, and the like. The embodiments of the present application do not limit the application scenarios. In the embodiment of the present application, a terminal device is also sometimes referred to as a User Equipment (UE), an access terminal device, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a machine terminal, a UE agent, a UE apparatus, or the like. The terminal equipment may be fixed or mobile. By way of example and not limitation, the terminal device in the embodiment of the present application may also be a VR terminal, an AR terminal, or an MR terminal. The VR terminal, AR terminal, and MR terminal may all be referred to as XR terminals. The XR terminal may be, for example, a head-mounted device (e.g., a helmet or glasses), a kiosk, a television, a display, a car-mounted device, a tablet, a smart screen, a holographic projector, a video player, a remote controlled robot, a haptic internet terminal, etc. The XR terminal can present the XR data to the user, and the user can experience diversified XR services by wearing or using the XR terminal. The XR terminal may access the network via wireless or wired means, such as via WiFi or 5G systems.

In a wireless communication network, communication cooperation of a distributed antenna array scene is a solution in a borderless networking form aiming at improving the experience of edge users and increasing the average capacity of a cell. The communication cooperation of the distributed antenna array scene aims at the users in the edge area among multiple TRPs, interference among the TRPs is converted into useful signals through the joint coherent signal transmission among the TRPs, so that the interference among the TRPs can be reduced while the signal power is enhanced, and the SINR of the users can be improved. In addition, a joint precoding sending weight value can be designed through the joint space freedom degree of multiple TRPs, and the maximization of the whole capacity of the system is realized. For example, as shown in fig. 1, end device 140 is an edge user of first network node 110, and end device 150 is an edge user of second network node 120. Since the received signal energy of the edge user is relatively small and the interference of the neighboring cell is relatively large, the communication quality of the edge user is 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 cooperate jointly to respectively send coherent signals to the terminal device 140 and the terminal device 150, so that the signals received by the terminal device 140 and the terminal device 150 can be enhanced, the interference suffered by the terminal device 140 and the terminal device 150 can be reduced, and the user experience of the terminal device 140 and the terminal device 150 is improved. It is to be understood that the second network node 110 and the second network node 110 may be the TRPs described above.

Based on fig. 1, fig. 2 shows a schematic flow chart of a communication cooperation method provided in an embodiment of the present application. The Media Access Control (MAC) layers of the first network node 210 and the second network node 220 perform scheduling, MCS estimation, and the like independently. In order to improve the user experience of the edge user, after the MAC layers of the first network node 210 and the second network node 220 independently perform scheduling, MCS estimation, and the like, the received signal strength of the user and the interference suppression capability of the user are improved through the joint weight design of the Physical Layer (PHY). The above communication cooperation method may have the following problems: first, the scheduling, MCS estimation, and the like of the MAC layers of the first network node 210 and the second network node 220 are performed independently in respective cells, and the factors such as mutual interference among users in multiple cells are not considered, which may not achieve the effects of scheduling, MCS estimation, and the like of the optimal performance of the system. Secondly, since the joint transmission weight calculation of the PHY layer is performed after the processes such as the MAC layer scheduling, MCS estimation, and the like are performed, the related processes of the MAC layer do not consider that after the PHY layer performs the joint weight calculation, the transmission signal capability and the interference suppression capability of the air interface are enhanced, so that the performance deviation between the MAC layer and the PHY layer is large. That is to say, the MAC layer and the PHY layer are not designed for joint optimization, and the performance of the related process of the MAC layer is not matched with the performance of the joint transmission weight of the PHY layer, which may cause the communication cooperation efficiency to decrease, the air interface performance to decrease, and some scenarios may also cause the average throughput of the cell and the edge user rate to generate negative gain. In view of the above problems, the embodiments of the present application propose the following solutions.

Referring to fig. 1 and fig. 2, please refer to fig. 3, and fig. 3 shows a schematic flow chart of a communication cooperation method 300 according to an embodiment of the present application. In the communication cooperation method shown in fig. 3, a first network node and a second network node are involved, wherein the first network node and the second network node may belong to the same access network device as a component 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 fact that the access network device in fig. 3 includes two network nodes is merely an example, and the access network device may include more than two network nodes, and the number of network nodes is not limited herein. The first network node may be the first network node shown in fig. 1 and fig. 2 of the present embodiment, and the second network node may be the second network node shown in fig. 1 and fig. 2 of the present embodiment. Illustratively, the first network node is TRP0, and the second network node is TRP1, for convenience of description, hereinafter referred to as TRP0 and TRP 1. The method 300 of the present embodiment includes, but is not limited to, the following steps:

s301, determining initial user equipment to be scheduled and an initial joint sending weight.

Illustratively, the access network device determines a first number of user devices to be scheduled of TRP0 and a second number of user devices to be scheduled of TRP 1. Optionally, the access network device may select, based on a Proportional Fair (PF) criterion, a first number of user devices to be scheduled of the TRP0 and a second number of user devices to be scheduled of the TRP1 as initial user devices to be scheduled from among the user devices of the cell corresponding to the TRP0 and the user devices of the cell corresponding to the TRP1, which are sorted from high to low according to a PF factor. The first number of user equipment to be scheduled of the TRP0 and the second number of user equipment to be scheduled of the TRP1 are the initial user equipment to be scheduled determined by the access network.

Exemplarily, after determining the initial user to be scheduled, the access network device may determine a first joint transmission weight between a first user equipment and the TRP0 and the TRP1, and the access network device may also determine a second joint transmission weight between a second user equipment and the TRP0 and the TRP 1; wherein the first user equipment and the second user equipment are included in the initial user equipment to be scheduled. The first joint sending weight and the second joint sending weight are initial joint sending 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 an initial joint transmission weight.

S302, determining an optimized joint sending weight value based on a first criterion, and determining whether to delete the user equipment according to weight information.

Exemplarily, the access network device determines a third joint transmission weight value between the first user equipment and TRP0 and TRP1 based on the first criterion, wherein the third joint transmission weight value includes the first weight information; the access network equipment determines a fourth combined transmission weight value between the second user equipment and the TRP0 and TRP1 based on a first criterion, wherein the third combined transmission weight value comprises second weight information; the first criterion may be a weighting and capacity maximization criterion, a weighted minimum mean square error criterion, or another weight optimization criterion, where the weight optimization criterion is not limited. The access network equipment determines whether the first user equipment and the first TRP and the second TRP continue cooperative communication based on the first weight information; similarly, the access network device determines whether the second user equipment and the first TRP and the second TRP continue cooperative communication based on the second weight information. The first weight information may be obtained by the access network device based on a norm of the third combined transmission weight, or may be obtained by the access network device based on a power of the third combined transmission weight; similarly, 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 characterize 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 of the embodiment of the application jointly optimizes the scheduling of the MAC layer among the TRPs and the like, and jointly optimizes the joint transmission weight of the PHY layer and the scheduling of the MAC layer and the like, thereby improving the experience of edge users and further improving the average throughput of the cell.

Referring to fig. 1, fig. 2, and fig. 3, please refer to fig. 4, and fig. 4 is a schematic flow chart illustrating a communication cooperation method 400 according to an embodiment of the present application. In the communication cooperation method shown in fig. 4, a first network node and a second network node are involved, wherein the first network node and the second network node may belong to the same access network device as a component 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 fact that the access network device in fig. 4 includes two network nodes is merely an example, and the access network device may include more than two network nodes, and the number of network nodes is not limited herein. The first network node may be a first network node shown in fig. 1, fig. 2, and fig. 3 of the present embodiment, and the second network node may be a second network node shown in fig. 1, fig. 2, and fig. 3 of the present embodiment. Illustratively, the first network node is TRP0, and the second network node is TRP1, for convenience of description, hereinafter referred to as TRP0 and TRP 1. The method 400 of the present embodiment includes, but is not limited to, the following steps:

s401, determining initial user equipment to be scheduled and an initial joint sending weight.

Illustratively, the access network device determines a first number of user devices to be scheduled of TRP0 and a second number of user devices to be scheduled of TRP 1. Optionally, the access network device may select, based on a Proportional Fair (PF) criterion and according to a PF factor, a first number of to-be-scheduled user equipments of TRP0 and a second number of to-be-scheduled user equipments of TRP1 as initial to-be-scheduled user equipments in the user equipments of the cell corresponding to TRP0 and the user equipments of the cell corresponding to TRP1 in order from high to low. The first number of user equipment to be scheduled of the TRP0 and the second number of user equipment to be scheduled of the TRP1 are the initial user equipment to be scheduled determined by the access network.

The method for the access network device to determine the first joint transmission weight and the second joint transmission weight may be the same, and the following method for determining the first joint transmission weight is given as an example:

illustratively, the access network device obtains channel measurement information between the first user device and the TRP0 and obtains channel measurement information between the first user and the TRP 1. The information measurement information may be an uplink channel estimation between the first user equipment and the TRP0 and an uplink channel estimation between the first user equipment and the TRP1, a downlink channel estimation between the first user equipment and the TRP0 and a downlink channel estimation between the first user equipment and the TRP1, or other measurement information capable of reflecting channel information between the first user equipment and the TRP0 and between the first user and the TRP 1. The access network device may send a Sounding reference signal (Sounding reference) through the first user equipmentConference Signal, SRS) to obtain an uplink channel estimate between the first user equipment and TRP0 and an uplink channel estimate between the first user equipment and TRP 1; the access network device may further obtain an uplink channel estimation between the first user equipment and a TRP0 and an uplink channel estimation between the first user equipment and a TRP1 through a Demodulation Reference Signal (DMRS) sent by the first user equipment; the access network device may obtain a downlink Channel estimation between the first user equipment and the TRP0 and a downlink Channel estimation between the first user equipment and the TRP1 through Channel State Information (CSI) fed back by the first user equipment. 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 splice H0 and H1, where H0 and H1 are in a matrix form. The spliced channel measurement information (H2) is

H2 is also a matrix. For example, if 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, the dimension of the H2 spliced by the H0 and the H1 is 2m rows and n columns. The access network device performs Singular Value Decomposition (SVD) on the spliced channel measurement information H2, and takes a right Singular matrix after SVD Decomposition as the first joint transmission weight between the first user and the TRP0 and the TRP 1.

The SVD decomposition is a matrix decomposition in linear algebra, and the SVD decomposition process is exemplarily as follows: assuming that M is an M × n order matrix in which the elements all belong to the real or complex domain, there is a decomposition such that

M＝U∑V ^*

Where U is a unitary matrix of order mxm; Σ is a half positive definite diagonal matrix of order mxn, and V is a unitary matrix of order nxn. Such decomposition is referred to as SVD decomposition of M. The elements on the diagonal of Σ are the singular values of M.

Illustratively, m and n are positive integers.

Illustratively, the access network device may determine the second combined transmission weight value between the second user and the TRP0 and the TRP1 by the above-described method.

Illustratively, the granularity of the first and second joint transmit weights is a Resource Block Group (RBG). For example, the first user is scheduled on 10 RBGs, and each RBG has a corresponding first joint transmit weight. Similarly, each RBG on the second user's scheduled RBG has a corresponding second joint transmit weight.

It should be understood that the above method is only exemplified by the first user equipment and the second user equipment, and the initial user equipment to be scheduled may not only include only two users of the first user equipment and the second user equipment, but may also include other user equipments, where the number of the user equipments is not limited herein. The initial joint transmission weight of each ue included in the initial ue to be scheduled may be determined by referring to the method of the first joint transmission weight.

S402, determining an optimized combined sending weight of the initial user equipment to be scheduled based on the first rule, and determining whether to delete the user equipment according to the weight information.

Exemplarily, if the step S402 is performed for the first time, the access network device determines a third joint transmission weight between the first user equipment and the TRP0 and TRP1 based on the first criterion, where the third joint transmission weight includes the first weight information; the access network equipment determines a fourth joint sending weight value between the second user equipment and the TRP0 and TRP1 based on the first rule, wherein the third joint sending weight value comprises second weight information; the first criterion may be a weighting and capacity maximization criterion, a weighted minimum mean square error criterion, or another weight optimization criterion, where the weight optimization criterion is not limited. The access network equipment determines whether the first user equipment and the first TRP and the second TRP continue cooperative communication based on the first weight information; similarly, the access network device determines whether the second user equipment and the first TRP and the second TRP continue cooperative communication based on the second weight information. The first weight information may be obtained by the access network device based on a norm of the third combined transmission weight, or may be obtained by the access network device based on a power of the third combined transmission weight; similarly, 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 characterize 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 equipment compares the first weight information and the second weight information with a weight threshold respectively to determine whether the first user equipment or the second user equipment needs to be deleted. The weight threshold may be a threshold configured in advance to the access network device, or may be calculated by the access network device according to the cell performance requirement, where a specific obtaining manner of the weight threshold is not limited. When the first weight is smaller than the weight threshold, the access network equipment deletes the first user equipment from the initial scheduling user equipment; when the second weight is less than the weight threshold, the access network device deletes the second user device from the initial scheduling user device. It is assumed here that both the first weight and the second weight are larger than a weight threshold, i.e. both the first user equipment and the second user equipment continue to cooperatively communicate with TRP0 and TRP 1. The third joint sending weight and the fourth joint sending weight are optimized joint sending weights for executing the step S402; the first user equipment and the second user equipment are the user equipment to be scheduled after performing the optimization of this step S402.

For example, if the step S402 is executed for the second time, the access network device determines, according to the first user equipment, the second user equipment, the third joint transmission weight and the fourth joint transmission weight obtained by executing the step S402 for the first time, 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 TRP 1. For example, the access network device may be in accordance with the formula W ^(t) ＝f(W ^(t-1) H) determining the fifth connectionAnd combining the transmission weight and the sixth combined transmission weight. Wherein, W ^(t) May represent a fifth joint transmission weight or a sixth joint transmission weight, W ^(t-1) H may represent the third or fourth joint transmission weight, and H may represent that step S402 is to perform channel measurement information between the first or second user equipment and TRP0 and TRP1 for the second time; f represents a first criterion. Wherein the fifth joint sending weight value includes third weight information, and the sixth joint sending weight value includes fourth weight information. The access network equipment determines whether the first user equipment and the first TRP and the second TRP continue cooperative communication based on third weight information; similarly, the access network device determines whether the second user equipment and the first TRP and the second TRP continue cooperative communication based on the fourth weight information. The fifth joint transmission weight and the sixth joint transmission weight are optimized joint transmission weights for executing the step S402; the first user equipment and the second user equipment are the user equipment to be scheduled after performing the optimization of this step S402.

Illustratively, 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 that methods performed for the third and previous times may refer to the method performed for the second time in step S402 described above. The initial user equipment to be scheduled may include not only two users, i.e., the first user equipment and the second user equipment, but also more than two user equipments, where the number of the user equipments is not limited. The above-mentioned method for determining the optimized joint transmission weight of each ue included in the initial ue to be scheduled and the method for determining whether each ue is deleted may refer to the description in step S402.

And S403, judging whether the iteration times of the step S402 reach an iteration threshold.

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

S404, determining the optimized MCS of the user equipment to be scheduled according to the optimized combined sending weight value.

For example, if step S402 is executed 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 MCS corresponding to the second user equipment according to the fourth joint transmission weight. If step S402 is executed twice, the access network device determines the MCS corresponding to the first user equipment according to the fifth joint transmission weight, and determines the MCS corresponding to the second user equipment according to the sixth joint transmission weight. That is, the access network device determines the MCS of the optimized user to be scheduled, which is obtained by executing step S402 the last time, according to the optimized joint sending weight obtained by executing step S402 the last time. The MCS determined based on the optimized combined sending weight can be matched with the performance of the sending weight of the PHY layer, so that the obtained MCS is more reasonable and accurate.

Illustratively, the granularity of the MCS is RBG.

Optionally, S405, determines whether the optimized ue to be scheduled continues to be scheduled on the first RBG according to the MCS.

Illustratively, the access network equipment determines whether the first user equipment continues scheduling on a first RBG according to the MCS of the first user equipment on the first RBG, the first RBG being any one of all RBGs where the first user equipment is located. For example, the first ue schedules on 10 RBGs (RBG 1-RBG 10) in total, and the access network device first traverses the MCS corresponding to the 10 RBGs to obtain the maximum MCS. Secondly, the access network equipment compares the MCS corresponding to the RBGs 1-10 with the maximum MCS one by one, and when the MCS corresponding to the RBG in the RBGs 1-10 is lower than the maximum MCS and reaches a first threshold, the first user equipment does not continue to schedule on the RBG. The first threshold is a real number, and can be set according to different performance requirements, which is not limited herein; the first threshold may be stored in advance in the access network device. Therefore, when the channel between the first user equipment and the TRP0 and the TRP1 is a frequency selection channel, a frequency band with poor channel quality can be avoided, and user experience is improved.

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, where the first RBG is any one of all the RBGs where the second user equipment is located.

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

And S406, data weighting and sending.

For example, if step S402 is executed once, the access network device sends the third combined transmission weight and the data to be sent of the first user to TRP0 and TRP1, and TRP0 and TRP1 send the third combined transmission weight and the data to be sent in a data weighted manner. The access network equipment sends the fourth joint sending weight value of the first user and data to be sent to TRP0 and TRP1, and the TRP0 and TRP1 carry out data weighted sending on the fourth joint sending weight value and the data to be sent.

If the step S402 is executed twice, the access network device sends the fifth joint sending weight and the data to be sent of the first user to the TRP0 and the TRP1, and the TRP0 and the TRP1 perform data weighted sending on the fifth joint sending weight and the data to be sent. The access network equipment sends the sixth joint sending weight value of the first user and the data to be sent to the TRP0 and the TRP1, and the TRP0 and the TRP1 carry out data weighted sending on the sixth joint sending weight value and the data to be sent.

It should be understood that the access network device transmits the optimized joint transmission weight value obtained by performing step S402 for the last time to TRP0 and TRP 1. The TRPs for cooperative communication may include more than TRP0 and TRP1, and the number of TRPs is not limited herein. The initial ue to be scheduled may not only include the first ue and the second ue, but also the number of ues is not limited herein.

It should be understood that the above procedures of scheduling, MCS estimation, etc. are generally performed at the MAC layer, and the above determination of the joint transmission weights is generally performed at the PHY layer.

The communication cooperation method 400 of the embodiment of the application performs joint optimization on the MAC layer scheduling, MCS estimation and the like among the TRPs, and performs joint optimization on the joint transmission weight of the PHY layer, the MAC layer scheduling, MCS estimation and the like, thereby improving the experience of edge users and further improving the average throughput of the cell.

Referring to fig. 1, fig. 2 and fig. 3, please refer to fig. 5, and fig. 5 shows a schematic flow chart of a communication cooperation method 500 according to another embodiment of the present application. In the communication cooperation method illustrated in fig. 5, a first network node and a second network node are involved, wherein the first network node and the second network node may belong to the same access network device or belong to different access network devices. It should be understood that the embodiment of fig. 5 in which the access network device includes two network nodes is merely an example, and the access network device may include more than two network nodes, and the number of network nodes is not limited herein. The first network node may be a first network node shown in fig. 1, fig. 2, and fig. 3 of the present embodiment, and the second network node may be a second network node shown in fig. 1, fig. 2, and fig. 3 of the present embodiment. Illustratively, the first network node is TRP0, and the second network node is TRP1, for convenience of description, hereinafter referred to as TRP0 and TRP 1. The method 500 of the present embodiment includes, but is not limited to, the following steps:

s501, determining initial user equipment to be scheduled and an initial sending weight.

Exemplarily, taking TRP0 as an example, the access network device determines a first number of TRPs 0 of user devices to be scheduled. Optionally, the access network device may select, based on a Proportional Fair (PF) criterion, a first number of user devices to be scheduled of the TRP0 as an initial user device to be scheduled of the TRP0 from user devices in a cell corresponding to the TRP0, sorted from high to low by a PF factor. The first number of user equipment to be scheduled of the TRP0 is the initial user equipment to be scheduled of the TRP0 determined by the access network.

Exemplarily, after determining the initial user to be scheduled of the TRP0, the access network device may determine a first transmission weight between a first user equipment and the TRP0, and the access network device may also determine a second transmission weight between a second user equipment and the TRP 0; wherein the first user equipment and the second user equipment are comprised in the initial to-be-scheduled user equipment of the TRP 0. The first transmission weight and the second transmission weight are initial transmission weights of the first user equipment and the second user equipment. The first transmission weight and the second transmission weight are included in an 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, and the following method for determining the first transmission weight is exemplified as follows:

the access network device obtains channel measurement information between the first user equipment and TRP 0. The information measurement information may be an uplink channel estimation between the first user equipment and the TRP0, a downlink channel estimation between the first user equipment and the TRP0, or other measurement information capable of reflecting channel information between the first user equipment and the TRP 0. The access network device may obtain an uplink channel estimate between the first user equipment and the TRP0 through the SRS sent by the first user equipment. The access network equipment can also obtain the uplink channel estimation 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 a right singular matrix after SVD decomposition as a first transmission weight between the first user and the TRP 0.

M＝U∑V ^*

Where U is a unitary matrix of order mxm; Σ is a half positive definite diagonal matrix of order mxn and V is a unitary matrix of order nxn. Such decomposition is referred to as SVD decomposition of M. The elements on the diagonal of Σ are the singular values of M.

Illustratively, m and n are positive integers.

Illustratively, the granularity of the first transmission weight and the second transmission weight is a Resource Block Group (RBG).

It should be understood that the initial user equipment to be scheduled of the TRP0 may include not only two user equipments, but also more than two user equipments, and the number of the user equipments is not limited herein. The initial transmission weight value of each ue included in the initial ue to be scheduled of the TRP0 may be determined by referring to the first transmission weight value.

S502, determining an optimized sending weight of the initial user equipment to be scheduled based on the first rule, and determining whether to delete the user equipment according to the weight information.

Exemplarily, taking TRP0 as an example, if step S502 is executed for the first time, the access network device determines 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 equipment determines a fourth sending weight value between the second user equipment and the TRP0 based on the first criterion, wherein the fourth combined sending weight value comprises second weight information; the first criterion may be a weighting and capacity maximization criterion, a weighted minimum mean square error criterion, or another weight optimization criterion, where the weight optimization criterion is not limited. The access network device determining whether the first user device continues to communicate with the TRP0 based on the first weight information; similarly, the access network device determines whether the second user equipment and the TRP0 continue to communicate based on the second weight information. The first weight information may be obtained by the access network device based on a norm of the third transmission weight, or may be obtained by the access network device based on a power of the third transmission weight; similarly, the second weight 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 characterize 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 that both the first user and the second user continue to communicate with the first TRP based on the first weight information and the second weight information. The third sending weight and the fourth sending weight are the optimized sending weight for executing the step S402; the first user equipment and the second user equipment are the user equipment to be scheduled after performing the optimization of this step S402.

For example, if step S502 is executed for the second time, the access network device determines, according to the first user equipment, the second user equipment, the third transmission weight and the fourth transmission weight obtained by executing step S502 for the first time, 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 TRP 0. Wherein the fifth transmit weight includes third weight information, and the sixth transmit weight includes fourth weight information. The access network device determines whether the first user equipment and the first TRP continue to communicate based on third weight information; similarly, the access network device determines whether the second user equipment and the first TRP continue to communicate based on the fourth weight information. The fifth sending weight and the sixth sending weight are optimized sending weights for executing the step S502 this time; the first user equipment and the second user equipment are the user equipment to be scheduled after performing the optimization of this step S502.

Illustratively, the granularity of the third transmit weight, the fourth transmit weight, the fifth transmit weight, and the sixth transmit weight is RBG.

It should be understood that step S502 may be performed multiple times, and that the method performed for the third and previous times may refer to the method performed for the second time in step S502 described above. The initial user equipment to be scheduled of the TRP0 may include not only two users, i.e., the first user equipment and the second user equipment, but also more than two user equipments, and the number of the user equipments is not limited herein. The above-mentioned method for determining the optimized transmission weight of each ue included in the initial ue to be scheduled and the method for determining whether each ue is deleted may refer to the description in step S502.

Exemplarily, the TRP1 may determine an optimized user equipment (e.g. third user equipment, fourth user equipment) of the TRP1 according to the method of TRP0 described above.

And S503, judging whether the iteration times of the step S502 reach an iteration threshold.

Illustratively, the access network device determines whether the iteration count of step S502 reaches an iteration threshold, if the iteration count does not reach the iteration threshold, step S502 is executed, and if the iteration count reaches the iteration threshold, step S504 is executed. The iteration threshold may be an integer greater than or equal to 1, such as 10, pre-configured in the access network.

S504, obtaining optimized user equipment of the TRP0 and the TRP1, and performing joint sending weight calculation and corresponding MCS calculation based on a first rule.

Illustratively, the access network device obtains optimized user equipment of the TRP0 and TRP1, such as a first user equipment and a second user equipment of the TRP0 obtained by the access network device, and a third user equipment and a fourth user equipment of the TRP 1. The first user equipment and the second user equipment are comprised in an optimized user equipment of TRP 0; the third user equipment and the fourth user equipment are comprised in an optimized user equipment of TRP 1. Then the access network device obtains 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 TRP 1. And then the access network equipment splices the channel measurement information between the user equipment and the TRP0 and the channel measurement information between the TRP1 to obtain spliced channel measurement information H1, H2, H3 and H4. Wherein H1 is the spliced channel measurement information between the first user equipment and TRP0 and TRP1, and similarly, H2, H3 and H4 are the spliced channel measurement information between the second user equipment, the third user equipment and the fourth user equipment and TRP0 and TRP1, respectively. The specific splicing method is described with reference to step S401. And the access network equipment determines the joint sending weight of the first user equipment according to H1, H2, H3 and H4 and based on a 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 and H4 and based on the first criterion. The first criterion may be a weighting and capacity maximization criterion, a weighted minimum mean square error criterion, or another weight optimization criterion, where the weight optimization criterion is not limited. And the access network equipment determines the MCS corresponding to the first user equipment according to the combined sending weight of the first user equipment. Similarly, the access network device may determine the MCS corresponding to the second user equipment, the third user equipment, and the fourth user equipment. The MCS determined based on the combined sending weight can be matched with the performance of the sending weight of the PHY layer, so that the obtained MCS is more reasonable and accurate.

Optionally, S505, determines whether the optimized user equipment to be scheduled continues to be scheduled on the first RBG according to the MCS. The specific method may be described with reference to S405, and is not described herein again.

And S506, data weighting transmission.

The specific method can be described with reference to S406, and is not described herein again.

The communication cooperation method 500 of the embodiment of the present application performs joint optimization on MAC layer scheduling, MCS estimation, and the like between the TRPs, and performs joint optimization on a joint transmission weight of the PHY layer, the MAC layer scheduling, the MCS estimation, and the like, thereby improving the experience of edge users and further improving the average throughput of a cell.

Fig. 6 is a schematic structural diagram of a possible communication device provided in an embodiment of the present application. These communication devices can be used to implement the functions of the access network device in the above method embodiments, and therefore, the beneficial effects of the above method embodiments can also be achieved. In an embodiment of the present application, the communication device may be an access network device in the foregoing method embodiment, and may also be a module (e.g., a chip) applied in the foregoing access network device.

As shown in fig. 6, the communication device 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, for example, the access network device may include a first network node and a second network node, where the first network node is TRP0, and the second network node is TRP1, and for convenience of description, the following are abbreviated as TRP0 and TRP 1.

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 an initial ue to be scheduled and an initial joint transmit weight. Exemplarily, the processing module 610 is configured to determine a first number of user equipments to be scheduled for a first Transmission Reception Point (TRP) and a second number of user equipments to be scheduled for a second TRP; the processing module 610 is further configured to determine a first joint transmission weight between a first user equipment of the first and second numbers of scheduled user equipments and the first and second TRPs; the processing module 610 is further configured to determine a second joint transmission weight between a second user equipment of the first and second numbers of scheduled user equipments and the first and second TRPs.

The processing module 610 is further configured to determine an optimized joint transmission weight of the initial ue to be scheduled based on the first criterion, and determine whether to delete the ue according to the weight information. Exemplarily, the processing module 610 is further configured to determine a third combined transmission weight between the first user equipment and the first TRP and the second TRP based on the first criterion, where the third combined transmission weight includes first weight information; the processing module 610 is further configured to determine a fourth joint transmission weight between the second user equipment and the first TRP and the second TRP based on the first criterion, where the fourth joint transmission weight includes second weight information; the processing module 610 is further configured to determine whether the first user equipment and the first TRP and the second TRP continue to perform cooperative communication based on the first weight information, and the processing module 610 is further configured to determine whether the second user equipment and the first TRP and the second TRP continue to perform cooperative communication based on the second weight information.

The transceiving module 620 is used for data weighted transmission.

As shown in fig. 6, the communication device 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, for example, the access network device may include a first network node and a second network node, where the first network node is TRP0, and the second network node is TRP1, and for convenience of description, the following are abbreviated as TRP0 and TRP 1.

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

the processing module 610 is configured to determine an initial ue to be scheduled and an initial joint transmit weight. Exemplarily, the processing module 610 is configured to determine a first number of user equipments to be scheduled for a first Transmission Reception Point (TRP) and a second number of user equipments to be scheduled for a second TRP; the processing module 610 is further configured to determine a first joint transmission weight between a first user equipment of the first and second numbers of scheduled user equipments and the first and second TRPs; the processing module 610 is further configured to determine a second joint transmission weight between a second user equipment of the first and second quantity scheduled user equipments and the first and second TRPs.

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

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

The processing module 610 is further configured to determine an MCS of the optimized ue to be scheduled according to the optimized joint transmit weight. Illustratively, the processing module 610 is further configured to determine a Modulation and Coding Scheme (MCS) corresponding to the first user equipment according to the third joint transmission weight, and/or the processing module 610 is further configured to determine an MCS corresponding to the second user equipment according to the fourth joint transmission weight.

Optionally, the processing module 610 is further configured to determine whether the optimized ue 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 whether the first user equipment continues to be scheduled on a first RBG according to the MSC corresponding to the first user equipment, where the first RBG is any one of all RBGs where the first user equipment 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 be scheduled on a first RBG, where the first RBG is any one of all RBGs where the second user equipment is located.

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

The communications apparatus 600 may also be configured to implement the functions of the access network device in the corresponding embodiment shown in fig. 5, for example, the access network device may include a first network node and a second network node, where the first network node is TRP0, and the second network node is TRP1, and for convenience of description, the first network node is TRP0 and TRP 1.

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 an initial ue to be scheduled and an initial transmit weight. Exemplarily, the processing module 610 is for a first number of user equipments to be scheduled of TRP0, and a second number of user equipments to be scheduled of TRP 1; the processing module 610 is further configured to determine a first transmit weight between the first user equipment and the TRP0, and a second transmit weight between the second user equipment and the TRP 0; the processing module 610 is further configured to determine a first transmit weight between a third user equipment and the TRP1 and a second transmit weight between a fourth user equipment and the TRP 1.

The processing module 610 is further configured to determine an optimized sending weight of the initial ue to be scheduled based on the first criterion, and determine whether to delete the ue 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 the TRP0 based on the first criterion, the third transmission weight including the first weight information; the access network equipment determines a fourth sending weight value between the second user equipment and the TRP0 based on the first criterion, wherein the fourth sending weight value comprises second weight information; the processing module 610 is further configured to determine that the first user equipment and the second user equipment are not deletion user equipment based on the first weight information and the second weight information; the processing module 610 is further configured to determine that the third user equipment and the fourth user equipment are not deletion user equipment;

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

The transceiving module 620 is used for data weighted transmission.

The above is only a partial example when the communication apparatus 600 is used to implement the functions of the access network device in the method embodiments shown in fig. 3, fig. 4 or fig. 5, and the functions of the processing module 610 and the transceiving module 620 in the communication apparatus 600 may refer to the operations of the access network device in the method embodiments shown in fig. 3, fig. 4 or fig. 5.

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

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

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

Optionally, the communication device 700 further comprises a bus 740, and the processor 710, the interface circuit 730 and the memory 720 may communicate via the bus 740.

The embodiment of the present application further provides a system chip, where the system chip includes an input/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 instructions of the at least one memory to perform the operations of the method of the above-mentioned aspects.

In the embodiment of the present application, it should be noted that the above method embodiments of the embodiment of the present application may be applied to a processor, or implemented by a processor. The processor may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. 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 connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may 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. The procedures or functions described in accordance with the embodiments of the application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic Disk), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: u disk, removable hard disk, read only memory, random access memory, magnetic disk or optical disk, etc. for storing program codes.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication collaboration, comprising:

the access network equipment determines a first quantity of user equipment to be scheduled of a first network node and a second quantity of user equipment to be scheduled of a second network node;

the access network device determines a first joint transmission weight between a first user device of the first quantity of scheduling user devices and the second quantity of scheduling user devices and the first network node and the second network node;

the access network device determines a second joint sending weight between a second user equipment of the first quantity of scheduling user equipment and the second quantity of scheduling user equipment and the first network node and the second network node;

the access network device determines a third joint transmission weight value between the first user equipment and the first and second network nodes based on a first criterion, wherein the third joint transmission weight value comprises first weight information; the access network device determines a fourth joint sending weight value between the second user equipment and the first network node and the second network node based on the first rule, wherein the fourth joint sending weight value comprises second weight information;

the access network device determines whether the first user equipment, the first network node and the second network node continue cooperative communication based on the first weight information, and the access network device determines whether the second user equipment, the first network node and the second network node continue cooperative communication based on the second weight information.

2. The method of claim 1, further comprising:

and the access network equipment determines a Modulation and Coding Scheme (MCS) corresponding to the first user equipment according to the third combined sending weight, and/or the access network equipment determines the MCS corresponding to the second user equipment according to the fourth combined sending weight.

3. The method of claim 2, further comprising:

the access network equipment determines whether the first user equipment continues to be scheduled on a first Resource Block Group (RBG) according to the MSC corresponding to the first user equipment, wherein the first RBG is any one of all RBGs of the first user equipment;

and/or the presence of a gas in the atmosphere,

and the access network equipment determines whether the second user equipment continues to be scheduled on a first RBG according to the MSC corresponding to the second user equipment, wherein the first RBG is any one of all RBGs of the second user equipment.

4. The method of any of claims 1-3, wherein the first criterion comprises a weighted sum capacity maximization criterion.

5. The method according to any of claims 1-4, wherein the first transmission weight information comprises a norm of the third combined transmission weight and the second transmission weight information comprises a norm of the fourth combined transmission weight.

6. The method of any of claims 1-5, wherein the determining, by the access network device, the first joint transmission weights between a first user equipment of the first and second numbers of scheduled user equipments and the first and second network nodes comprises:

the access network equipment acquires first channel measurement information and second channel measurement information of the first user equipment, wherein the first channel measurement information is channel measurement information between the first user equipment and the first network node, and the second channel measurement information is channel measurement information between the first user equipment and the second network node;

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

and the access network equipment carries out singular value decomposition on the third channel measurement information, and takes a right singular vector thereof as the first joint sending weight of the first user equipment.

7. The method according to any of claims 1-5, wherein the determining, by the access network device, second joint transmission weights between a second user equipment of the first and second numbers of scheduled user equipments and the first and second network nodes comprises:

the access network equipment acquires fourth channel measurement information and fifth channel measurement information of the second user equipment, wherein the fourth channel measurement information is channel measurement information between the second user equipment and the first network node, and the fifth channel measurement information is channel measurement information between the second user equipment and the second network node;

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

and the access network equipment performs singular value decomposition on the sixth channel measurement information, and takes a right singular vector thereof as the second combined sending weight of the second user equipment.

8. 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 channel Sounding Reference Signal (SRS) measurement of the first user equipment, or wherein 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 uplink channel SRS measurement of the second user equipment, or the fourth channel measurement information and the fifth channel measurement information are obtained based on CSI fed back by the second user equipment.

9. The method of any of claims 1-8, wherein the determining, by the access network device, a first number of user devices to be scheduled for a first network node and a second number of user devices to be scheduled for a second network node comprises:

the network device determines the first number of user devices to be scheduled and the second number of user devices to be scheduled based on a second criterion, which includes a Proportional Fair (PF) criterion.

10. A method of communication collaboration, comprising:

the access network equipment determines a second combined sending weight between a second user equipment of the first quantity of scheduling user equipment and the second quantity of scheduling user equipment and the first network node and the second network node;

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

and the access network equipment determines a Modulation and Coding Scheme (MCS) corresponding to the first user equipment according to the third combined sending weight, and the access network equipment determines the MCS corresponding to the second user equipment according to the fourth combined sending weight.

11. The method of claim 10, further comprising:

the third joint sending weight value comprises first weight information, and the access network equipment determines whether the first user equipment, the first network node and the second network node continue cooperative communication or not based on the first weight information;

the fourth joint sending weight value comprises second weight information, and the access network device determines whether the second user equipment, the first network node and the second network node continue cooperative communication or not based on the second weight information.

12. The method according to claim 10 or 11, characterized in that the method further comprises:

the access network equipment determines whether the first user equipment continues to be scheduled on a first RBG according to the MSC corresponding to the first user equipment, wherein the first RBG is any one of all RBGs of the first user equipment;

and/or the presence of a gas in the gas,

13. The method of any of claims 10-12, wherein the first criterion comprises a weighted sum capacity maximization criterion.

14. The method according to any one of claims 11-13,

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.

15. The method of any of claims 10-14, wherein the determining, by the access network device, a first joint transmission weight between a first user equipment of the first and second numbers of scheduled user equipments and the first and second network nodes comprises:

16. The method according to any of claims 10-14, wherein the determining, by the access network device, second joint transmission weights between a second user equipment of the first and second numbers of scheduled user equipments and the first and second network nodes comprises:

17. The method according to claim 15 or 16, characterized in that: the first channel measurement information and the second channel measurement information are obtained based on uplink channel 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;

18. The method of any of claims 10-17, wherein the determining, by the access network device, 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 comprises:

19. A communication apparatus for an access network device, comprising means for performing the method of any one of claims 1-9 or the method of any one of claims 10-18.

20. A communication device for use in an access network apparatus, comprising a processor and interface circuitry, the interface circuitry being configured to receive signals from a device other than the device and transmit the signals to the processor or transmit the signals from the processor to the device other than the device, and the processor being configured to implement the method of any one of claims 1 to 9 or the method of any one of claims 10 to 18 by logic circuitry or executing code instructions.

21. A computer-readable storage medium, having stored thereon a computer program or instructions which, when executed by a computing device, implement the method of any of claims 1-9, or implement the method of any of claims 10-18.

22. A computer program product comprising instructions for implementing the method of any one of claims 1-9, or the method of any one of claims 10-18, when executed by a computer device.

23. A communication system comprising one or more of: the communication device of claim 19 or 20; the computer-readable storage medium of claim 21; and a computer program product as claimed in claim 22.