WO2023024967A1

WO2023024967A1 - Resource configuration method and apparatus

Info

Publication number: WO2023024967A1
Application number: PCT/CN2022/112708
Authority: WO
Inventors: 纪刘榴; 金黄平; 王潇涵
Original assignee: 华为技术有限公司
Priority date: 2021-08-27
Filing date: 2022-08-16
Publication date: 2023-03-02
Also published as: CN115733589A

Abstract

The present application discloses a resource configuration method and apparatus. The method comprises: a network device sending configuration information to a terminal device, the configuration information comprising information of a first CSI-RS resource, and the first CSI-RS resource corresponding to a plurality of first scrambling IDs; correspondingly, the terminal device receiving the configuration information; and then, the terminal device receiving, according to the first CSI-RS resource and the plurality of first scrambling IDs, a plurality of first CSI-RSs come from a plurality of TRPs, one first scrambling ID allowing one TRP to generate a first CSI-RS. The method provided in the present application can effectively improve the condition that the overhead of CSI-RS resources increases along with an increase in the number of coordinated TRPs of the terminal device, thereby effectively reducing the resource overhead.

Description

Resource allocation method and device

This application claims the priority of the Chinese patent application with the application number 202110998527.8 and the application name "Resource Allocation Method and Device" submitted to the China Patent Office on August 27, 2021, the entire contents of which are incorporated in this application by reference.

technical field

The present application relates to the field of communication technologies, and in particular, to a resource configuration method and device.

Background technique

In a multi-antenna system, when sending a signal, the sending end can adjust the weight (such as amplitude or phase) of the sending signal of each sending antenna, so as to change the spatial energy distribution of the sent signal according to requirements. In turn, the signal can concentrate energy in some directions in space to form a beam. This weight adjustment can be called a process of spatial filtering, beamforming or precoding (precoding will be used as an example below). The above method can better align the useful signal with the target user, avoid interference to other users caused by leakage of signal energy, and improve the signal-to-interference-noise ratio. Meanwhile, the foregoing precoding may be determined based on different known states of the channel. That is to say, to achieve good precoding performance, channel state information (CSI) is very important.

In a multi-station (also referred to as multiple transmit receive point (TRP)) transmission system, the terminal device can configure the channel state information reference signal (CSI-RS) according to the network device configuration. The resource measures the CSI-RS, so that the terminal device can obtain the CSI from the multiple TRPs to the terminal device according to the CSI-RS received from the multiple TRPs, so as to determine precoding. As shown in FIG. 1 , (1) in FIG. 1 represents resources configured by the network device for the terminal device, and the resources can be used to transmit signals (such as CSI-RS). (2) in FIG. 1 represents the CSI-RS resource 1 configured for TRP1 in the coordinated TRP set of the terminal device, and (3) in FIG. 1 represents the CSI-RS resource 1 configured for TRP2 in the coordinated TRP set of the terminal device. RS resource 2, wherein CSI-RS resource 1 and CSI-RS resource 2 are orthogonal to avoid interference. For example, TRP1 transmits CSI-RS through CSI-RS resource 1, and TRP2 transmits CSI-RS through CSI-RS resource 2. Therefore, the terminal device can measure the CSI-RS transmitted on CSI-RS resource 1 and CSI-RS resource 2 respectively. RS. According to the method shown in FIG. 1 , in order to avoid interference, it is necessary to allocate different CSI-RS resources for different TRPs.

In the above method, as the number of TRPs in the cooperative TRP set of the terminal device increases, the CSI-RS resources that the network device needs to allocate to the terminal device increase linearly, resulting in excessive system resource overhead.

Contents of the invention

The present application provides a resource allocation method and device, which can effectively improve the situation that the overhead of CSI-RS resources increases with the increase of the number of TRPs in the cooperative TRP set of the terminal equipment, and effectively reduce the resource overhead.

In the first aspect, the embodiment of the present application provides a resource configuration method, the method may be executed by a terminal device or a chip in the terminal device, and the method includes:

Receive CSI-RS configuration information, where the configuration information includes information about first CSI-RS resources, where the first CSI-RS resources correspond to multiple first scrambling identifiers (identity, ID); according to the first CSI - RS resources and the multiple first scrambling IDs receive multiple first CSI-RSs from multiple TRPs, one of the first scrambling IDs is used for one of the TRPs to generate one of the first CSI-RSs .

Exemplarily, the relationship between the scrambling ID and the CSI-RS can be implemented in the following way: For example, the scrambling ID can be used to generate a pilot sequence, and the pilot sequence is mapped to the resource element (resource element) allocated by the base station for the terminal device , RE) are sent out with a certain transmission power. A signal sent with a certain transmit power may be called a pilot for measuring channel information, such as a CSI-RS.

In this embodiment of the present application, different TRPs in the coordinated TRP set of the terminal device can respectively send the first CSI-RS through the same CSI-RS resource (such as the same time-frequency resource). For example, different TRPs of a terminal device can use the same different time-frequency resources to send different first CSI-RSs respectively (that is, different TRPs of a terminal device can multiplex the same time-frequency resources to send CSI-RSs). Since different TRPs can respectively use different first scrambling IDs to generate different pilot sequences (for example, different pilot sequences can achieve pseudo-orthogonality), effectively weakening the interference between different signals. For example, each TRP in the cooperative TRP set of the terminal device can multiplex the same time-frequency resources, but use different scrambling IDs to generate different pilot sequences, thereby mapping the pilot sequences to the same time-frequency The resource is sent to the terminal device. Since each TRP in the cooperative TRP set can use the same time-frequency resources, the situation that the overhead of CSI-RS resources increases with the number of cooperative TRPs in the cooperative TRP set of the terminal device is improved, and the CSI-RS resources are effectively reduced. The overhead of RS resources.

In a possible implementation manner, the method further includes: performing channel estimation according to the multiple first CSI-RSs.

In the embodiment of the present application, the terminal device can perform channel estimation through the above multiple first CSI-RSs, and obtain the CSI from each TRP of the multiple TRPs to the terminal device, so as to determine precoding.

In a possible implementation manner, the method further includes: acquiring a second CSI-RS resource; receiving information from the multiple TRPs according to the second CSI-RS resource and the multiple first scrambling IDs For multiple second CSI-RSs, one first scrambling ID is used for one TRP to generate one second CSI-RS.

In the embodiment of this application, the TRPs in the cooperative TRP set of the terminal device repeatedly send CSI-RS, for example, the TRP sends the first CSI-RS, the second CSI-RS, etc., that is, the first CSI-RS and the second CSI-RS sent by the same TRP. The second CSI-RS is sent to the UE through the same channel, thereby effectively reducing the probability of demodulation errors of the terminal equipment, improving the demodulation performance of the terminal equipment, and improving the channel estimation performance.

In a possible implementation manner, the configuration information further includes indication information of multiple second scrambling IDs, and the multiple second scrambling IDs correspond to the second CSI-RS resources, and the method further includes: acquiring The second CSI-RS resource; receiving multiple second CSI-RSs from the multiple TRPs according to the second CSI-RS resource and the multiple second scrambling IDs, one of the second scrambling IDs The scrambling ID is used for one TRP to generate one second CSI-RS.

In the embodiment of the present application, by including information of at least two CSI-RS resources in the configuration information, each CSI-RS resource corresponds to multiple different scrambling IDs. Thus, the TRPs in the coordinated TRP set of the terminal device repeatedly send CSI-RS, such as the TRP sends the first CSI-RS, the second CSI-RS, etc., the first CSI-RS and the second CSI sent by the same TRP - The RS is sent to the terminal device through the same channel, and the pilot sequence of the first CSI-RS and the pilot sequence of the second CSI-RS are generated by different scrambling IDs. Therefore, since the pilot sequences generated according to different scrambling IDs have large differences, the probability of demodulation errors of the terminal equipment can be further reduced, the demodulation performance of the terminal equipment can be improved, and the channel estimation performance can be improved.

In a possible implementation manner, the second CSI-RS resource is determined according to the first CSI-RS resource and a pattern.

Exemplarily, the pattern type includes any one of frequency-domain repetition, time-frequency repetition, or a specific pattern. Exemplarily, the second CSI-RS resource may be the repetition of the first CSI-RS resource on the time domain resource, or the second CSI-RS resource may be the repetition of the first CSI-RS resource on the frequency domain resource, or , the second CSI-RS resource is the repetition of the first CSI-RS resource on the time domain resource, and is the repetition of the first CSI-RS resource on the frequency domain resource, and so on.

In a possible implementation manner, the second CSI-RS resource is determined according to the number of the first CSI-RS resource and the first scrambling ID.

Exemplarily, different numbers of first scrambling IDs may correspond to different patterns. For example, if the number of first scrambling IDs is 2, the pattern of the second CSI-RS resource may be the repetition of the first CSI-RS resource on the time domain resource. For another example, if the number of first scrambling IDs is 3, the pattern of the second CSI-RS resource may be the repetition of the first CSI-RS resource on the frequency domain resource. For another example, if the number of first scrambling IDs is different, the second CSI-RS resource may be a repetition of the first CSI-RS resource on the time domain resource, but the greater the number of the first scrambling ID, the corresponding time domain resource Can be more.

In a possible implementation manner, the configuration information further includes information about the second CSI-RS resource.

In a possible implementation manner, the second CSI-RS resource corresponds to the multiple second scrambling IDs.

In a possible implementation manner, performing channel estimation according to the multiple first CSI-RSs includes: performing channel estimation according to the multiple first CSI-RSs and the multiple second CSI-RSs.

The second CSI-RS resource shown here is only an example, for example, the configuration information may also include information of the third CSI-RS resource and the like.

In a possible implementation manner, the pilot sequence of the first CSI-RS is based on the first scrambling ID and resource elements on an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol ( The number of resource element, RE) is determined.

In a possible implementation manner, the pilot sequence of the first CSI-RS is determined according to the first scrambling ID and the number of REs on multiple OFDM symbols.

In the embodiment of the present application, when the pilot sequence is generated according to the number of REs on multiple OFDM symbols and the first scrambling ID, the pilot sequence may be a long sequence. Since the pilot sequences generated by different TRPs according to their respective first scrambling IDs are long sequences, the pilot sequences generated between different TRPs can be made to have low correlation, which further improves the performance of channel estimation.

In a possible implementation manner, the number of the plurality of OFDM symbols is equal to the number of symbols of time domain resources occupied by a first CSI-RS sent by a TRP and the number of symbols of a time domain resource occupied by a second CSI-RS sent by a TRP. The sum of the number of symbols in the time domain resource.

In a possible implementation manner, the method further includes: sending capability information to the network device, where the capability information is used to indicate any one or more of the following: supported scrambling ID (such as the first scrambling ID) The number of supported patterns, or the duration of channel estimation.

In a second aspect, the embodiment of the present application provides a resource configuration method, the method includes: determining configuration information, the configuration information includes information about a first channel state information reference signal CSI-RS resource, and the first CSI-RS The resource corresponds to multiple first scrambling identification IDs; and the configuration information is sent.

It can be understood that the method provided in the embodiment of the present application may be executed by a network device. The network equipment may include a base station or a control node. The control node may be a TRP or the like in the cooperative TRP set of the terminal device.

Exemplarily, when the base station determines the configuration information, the base station may send the configuration information to one TRP in the cooperative TRP set of the terminal device, and then the one TRP notifies other TRPs and the terminal device. Or, the base station may send the configuration information to each TRP in the coordinated TRP set of the terminal device, and then one TRP in the coordinated TRP set sends the configuration information to the terminal device. Or, the base station may send the configuration information to the terminal device, and send the configuration information to each TRP in the coordinated TPR set of the terminal device, and so on. Exemplarily, when the control node is in the cooperative TRP set of the terminal device, the control node may send configuration information to other TRPs and the terminal device.

In a possible implementation manner, the method further includes: sending a first CSI-RS according to the first CSI-RS resource and the first scrambling ID.

In a possible implementation manner, the method further includes: determining a second CSI-RS resource; sending a second CSI-RS according to the second CSI-RS resource and the first scrambling ID; or, according to The second CSI-RS resource and the second scrambling ID send the second CSI-RS, and the second scrambling ID is included in the configuration information.

In this embodiment of the present application, the first CSI-RS and the second CSI-RS may be sent by the control node in the coordinated TRP set of the terminal device.

In a possible implementation manner, the second CSI-RS resource is determined according to the first CSI-RS resource and a pattern; or, the second CSI-RS resource is determined according to the first CSI-RS resource and The quantity of the first scrambling ID is determined.

In a possible implementation manner, the pilot sequence of the first CSI-RS is determined according to the first scrambling ID and the number of REs on one OFDM symbol.

In a possible implementation manner, the number of the plurality of OFDM symbols is equal to the number of symbols in the time domain resources occupied by the first CSI-RS transmitted by one TRP and the time domain resource occupied by the second CSI-RS transmitted by the TRP The sum of the number of symbols for the resource.

In a possible implementation manner, the method further includes: receiving capability information from the terminal device, where the capability information is used to indicate any one or more of the following: the number of supported scrambling IDs, the supported pattern type , or the duration of channel estimation.

Regarding the beneficial effects of the second aspect, reference may be made to the above-mentioned first aspect, which will not be described in detail here.

In a third aspect, the embodiment of the present application provides a communication device, configured to execute the method in the first aspect or any possible implementation manner of the first aspect. The communication device includes a corresponding unit for performing the method in the first aspect or any possible implementation manner of the first aspect.

Exemplarily, the communication device may be a terminal device or a chip in the terminal device.

In a fourth aspect, the embodiment of the present application provides a communication device, configured to execute the method in the second aspect or any possible implementation manner of the second aspect. The communication device includes a corresponding method for performing the method in the second aspect or any possible implementation manner of the second aspect.

Exemplarily, the communication device may be a network device or a chip in the network device.

In the third aspect or the fourth aspect, the above communication device may include a transceiver unit and a processing unit. For the specific description of the transceiver unit and the processing unit, reference may also be made to the device embodiments shown below.

In a fifth aspect, an embodiment of the present application provides a communication device, where the communication device includes a processor, configured to execute the method described in the first aspect or any possible implementation manner of the first aspect. Alternatively, the processor is used to execute a program stored in the memory, and when the program is executed, the method shown in the first aspect or any possible implementation manner of the first aspect is executed.

In the process of executing the above method, the process of sending information (or also including sending signal, etc.) and receiving information (or also including receiving signal, etc.) in the above method can be understood as the process of outputting the above information by the processor, and The process of receiving the above-mentioned information input by the device. When outputting the above information, the processor outputs the above information to the transceiver for transmission by the transceiver. After the above information is output by the processor, other processing may be required before reaching the transceiver. Similarly, when the processor receives the above-mentioned input information, the transceiver receives the above-mentioned information and inputs it to the processor. Optionally, after the transceiver receives the above information, the above information may need to be processed before being input to the processor.

For the transmitting, sending and receiving operations involved in the processor, if there is no special description, or if it does not conflict with its actual function or internal logic in the relevant description, it can be understood more generally as the processor output and Operations such as receiving and inputting, rather than transmitting, sending and receiving operations directly performed by radio frequency circuits and antennas.

During implementation, the above-mentioned processor may be a processor dedicated to performing these methods, or may be a processor that executes computer instructions in a memory to perform these methods, such as a general-purpose processor. The above-mentioned memory can be a non-transitory (non-transitory) memory, such as a read-only memory, which can be integrated with the processor on the same chip, or can be respectively arranged on different chips. The arrangement manner of the memory and the processor is not limited. It can be understood that the description of the processor and the memory is also applicable to the sixth aspect shown below, and will not be described in detail to avoid repeating the sixth aspect.

In a possible implementation manner, the memory is located outside the communication device.

In a possible implementation manner, the memory is located in the above communication device.

In the embodiment of the present application, the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together. Exemplarily, the memory can be used to store configuration information and the like.

In a possible implementation manner, the communication device further includes a transceiver, where the transceiver is configured to receive information or signals (or also configured to send information or signals). Exemplarily, the transceiver may also be used to receive configuration information or the first CSI-RS and the like.

In the embodiment of the present application, the communication device may be a terminal device or a chip in the terminal device.

In a sixth aspect, an embodiment of the present application provides a communication device, where the communication device includes a processor configured to execute the method described in the second aspect or any possible implementation manner of the second aspect. Alternatively, the processor is used to execute the program stored in the memory, and when the program is executed, the method shown in the above second aspect or any possible implementation manner of the second aspect is executed.

In the embodiment of the present application, the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together.

In a possible implementation manner, the communication device further includes a transceiver, where the transceiver is configured to send information or a signal (or also to receive information or a signal). Exemplarily, the transceiver may be used to send configuration information or the first CSI-RS and so on.

In the embodiment of the present application, the communication device may be a network device or a chip in the network device. The network equipment includes a base station, or a control node, and the like.

In a seventh aspect, the embodiment of the present application provides a communication device, the communication device includes a logic circuit and an interface, the logic circuit is coupled to the interface; the interface is used to input configuration information; the logic circuit is used to Inputting multiple first CSI-RSs according to the first CSI-RS resources and multiple first scrambling IDs, and performing channel estimation according to the multiple first CSI-RSs.

Optionally, the communication device further includes a memory, and the memory is used to store configuration information and the like.

It can be understood that, for the description of the configuration information or the first scrambling ID, etc., reference may be made to the description of the first aspect or the second aspect above; or, reference may also be made to the various embodiments shown below, which will not be described in detail here.

In an eighth aspect, the embodiment of the present application provides a communication device, the communication device includes a logic circuit and an interface, the logic circuit is coupled to the interface; the logic circuit is used to determine configuration information; the interface is used to Output the configuration information.

In the ninth aspect, the embodiment of the present application provides a computer-readable storage medium, which is used to store a computer program, and when it is run on a computer, any of the above-mentioned first aspect or the first aspect is possible The method shown in the implementation is executed.

In the tenth aspect, the embodiment of the present application provides a computer-readable storage medium, which is used to store a computer program, and when it is run on a computer, it makes possible any of the above-mentioned second aspect or the second aspect. The method shown in the implementation is executed.

In the eleventh aspect, the embodiment of the present application provides a computer program product, the computer program product includes a computer program or computer code, and when it is run on a computer, the above-mentioned first aspect or any possible implementation of the first aspect The method shown is executed.

In the twelfth aspect, the embodiment of the present application provides a computer program product, the computer program product includes a computer program or computer code, when it is run on a computer, it makes the second aspect or any possible implementation of the second aspect The method shown is executed.

In a thirteenth aspect, an embodiment of the present application provides a computer program. When the computer program is run on a computer, the method shown in the above-mentioned first aspect or any possible implementation manner of the first aspect is executed.

In a fourteenth aspect, an embodiment of the present application provides a computer program. When the computer program is run on a computer, the method shown in the second aspect or any possible implementation manner of the second aspect is executed.

In a fifteenth aspect, an embodiment of the present application provides a wireless communication system, the wireless communication system includes a terminal device and a network device, and the terminal device is used to implement the above-mentioned first aspect or any possible implementation of the first aspect A method, the network device is configured to execute the method shown in the second aspect or any possible implementation manner of the second aspect.

Description of drawings

FIG. 1 is a schematic diagram of a scenario of multi-station cooperation provided by an embodiment of the present application;

2a to 2c are schematic diagrams of a communication system provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of a scenario of multi-station cooperation provided by an embodiment of the present application;

FIG. 4 is a schematic flowchart of a resource allocation method provided by an embodiment of the present application;

Fig. 5a is a schematic flowchart of a resource allocation method provided by an embodiment of the present application;

Fig. 5b is a schematic diagram of resource duplication provided by an embodiment of the present application;

Fig. 5c is a schematic diagram of resource duplication provided by the embodiment of the present application;

Fig. 5d is a schematic diagram of resource duplication provided by the embodiment of the present application;

FIG. 6 is a schematic flowchart of a resource allocation method provided by an embodiment of the present application;

7 to 9 are schematic structural diagrams of a communication device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described below in conjunction with the accompanying drawings.

The terms "first" and "second" in the specification, claims and drawings of the present application are only used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally It also includes other steps or units inherent to these processes, methods, products, or devices.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

In this application, "at least one (item)" means one or more, "multiple" means two or more, "at least two (items)" means two or three and three Above, "and/or" is used to describe the association relationship of associated objects, which means that there can be three kinds of relationships, for example, "A and/or B" can mean: only A exists, only B exists, and A and B exist at the same time A case where A and B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items. For example, at least one item (piece) of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c ".

The method provided by this application can be applied to various communication systems, for example, it can be an Internet of Things (Internet of Things, IoT) system, a narrowband Internet of Things (NB-IoT) system, a long term evolution (long term evolution) , LTE) system, or a fifth-generation (5th-generation, 5G) communication system, and a new communication system (such as 6G) that will appear in future communication development. And the method provided in this application can also be applied to a wireless local area network (wireless local area network, WLAN) system, such as wireless-fidelity (wireless-fidelity, Wi-Fi) and the like.

The technical solution provided by this application can also be applied to machine type communication (machine type communication, MTC), inter-machine communication long term evolution technology (long term evolution-machine, LTE-M), device-to-device (device-to-device, D2D) network , machine to machine (machine to machine, M2M) network, Internet of things (internet of things, IoT) network or other networks. Wherein, the IoT network may include, for example, the Internet of Vehicles. Among them, the communication methods in the Internet of Vehicles system are collectively referred to as vehicle-to-everything (V2X, X can represent anything), for example, the V2X can include: vehicle-to-vehicle (V2V) communication, Vehicle to infrastructure (V2I) communication, vehicle to pedestrian (V2P) or vehicle to network (V2N) communication, etc. Exemplarily, in FIG. 2a shown below, terminal devices may communicate with each other through D2D technology, M2M technology or V2X technology.

Fig. 2a is a schematic diagram of a communication system provided by an embodiment of the present application. As shown in Fig. 2a, the communication system may include at least one network device and at least one terminal device.

The introductions to network devices and terminal devices are as follows:

Exemplarily, the network device may be a next generation node B (next generation node B, gNB), a next generation evolved base station (next generation evolved nodeB, ng-eNB), or a network device in future 6G communications. The network device may be any device with a wireless transceiver function, including but not limited to the above-mentioned base stations (including base stations on satellites). The base station may also be a base station in a future communication system such as a sixth generation communication system. Optionally, the network device may be an access node, a wireless relay node, a wireless backhaul node, etc. in a wireless local area network (wireless fidelity, WiFi) system. Optionally, the network device may be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario. Optionally, the network device may be a wearable device or a vehicle-mounted device. Optionally, the network device may also be a small station, a transmission reception point (transmission reception point, TRP) (or may also be called a transmission point), and the like. It can be understood that the network device may also be a base station in a future evolving public land mobile network (public land mobile network, PLMN), etc.

In some deployments, a base station (eg gNB) may consist of a centralized unit (CU) and a distributed unit (DU). That is, the functions of the base station in the access network are split, and part of the functions of the base station are deployed in a CU, and the remaining functions are deployed in the DU. And multiple DUs share one CU, which can save costs and facilitate network expansion. In other deployments of the base station, the CU can also be divided into CU-control plane (control plane, CP) and CU-user plane (user plan, UP). In some other deployments of the base station, the base station may also be an open radio access network (open radio access network, ORAN) architecture, etc. This application does not limit the specific type of the base station.

Exemplarily, the terminal equipment may also be called user equipment (user equipment, UE), terminal, and so on. A terminal device is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water, such as on a ship; it can also be deployed in the air, such as on a Airplanes or balloons, etc. Terminal equipment can be mobile phone, tablet computer (Pad), computer with wireless transceiver function, virtual reality (virtual reality, VR) terminal equipment, augmented reality (augmented reality, AR) terminal equipment, industrial control (industrial control) ), wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety , wireless terminals in a smart city, wireless terminals in a smart home, etc. It can be understood that the terminal device may also be a terminal device in a future 6G network or a terminal device in a future evolved PLMN.

Optionally, the terminal device shown in this application may include a vehicle (such as a complete vehicle) in the Internet of Vehicles, or a vehicle-mounted device or a vehicle-mounted terminal in the Internet of Vehicles. The form is not limited.

For ease of description, the method involved in this application will be introduced below by taking the terminal device as an example.

The communication system shown in Fig. 2a includes one base station and four UEs, such as UE1 to UE4 in Fig. 2a. Exemplarily, in the communication system, the base station may send configuration information and CSI-RS to UE1 to UE4, and UE1 to UE4 may report channel estimation measurement results and the like to the base station. UE1, UE3, and UE4 in FIG. 2a may be mobile phones, etc., and UE2 may be a car, etc. It can be understood that, for the manner of communication between UEs, reference may be made to the above description, which will not be described in detail here. It can be understood that for the interaction method between the base station and the UE, reference may be made to FIG. 4 , FIG. 5 a , and FIG. 6 shown below, and details will not be described here.

It should be understood that Fig. 2a exemplarily shows a base station, four UEs, and communication links between communication devices. Optionally, the communication system may include multiple base stations, and the coverage of each base station may include other numbers of UEs, such as more or fewer UEs, which is not limited in this application.

Each of the aforementioned communication devices, such as the base station and UE1 to UE4 in FIG. 2a , may be configured with multiple antennas. The multiple antennas may include at least one transmitting antenna for sending signals, at least one receiving antenna for receiving signals, etc., and the embodiment of the present application does not limit the specific structure of each communication device. Optionally, the communication system may further include other network entities such as a network controller and a mobility management entity, to which this embodiment of the present application is not limited.

Fig. 2b is a schematic diagram of another communication system provided by an embodiment of the present application. The communication system may include at least one UE and at least two TRPs. As shown in FIG. 2 b , TRP1 , TRP2 and TRP3 jointly communicate with the UE to form a cooperative TRP set of the UE. For example, the coordinated TRP set may include a control node, such as TRP1. The control node may determine configuration information and send the configuration information to the UE. Optionally, the control node may also send configuration information to other TRPs (such as TRP2 or TRP3).

Fig. 2c is a schematic diagram of another communication system provided by an embodiment of the present application, where the communication system includes at least one base station, at least one UE, and at least two TRPs. As shown in Fig. 2c, the cooperative TRP set of the UE includes TRP1, TRP2 and TRP3. Exemplarily, the base station can be used to control (or schedule) TRP1, TRP2 and TRP3. The three TRPs TRP1, TRP2 and TRP3 are indicated by dotted lines in Fig. 2c, which can be controlled by the base station. Exemplarily, the base station may determine configuration information, and send the configuration information to a TRP (such as TPR1, TRP2, or TRP3, etc.). For example, after receiving the configuration information, TRP1 may send the configuration information to the UE. For another example, the base station may directly send configuration information and the like to the UE.

It can be understood that the communication systems shown in FIG. 2a to FIG. 2c are only examples, and for specific descriptions of each device, reference may also be made below.

In a multi-site transmission system, if CSI-RS resources are configured for different TRPs serving each UE, as the number of TRPs in the coordinated TRP set of the UE increases, the system needs to configure the overhead of CSI-RS resources increase. Especially when a TRP sends CSI-RS through multiple ports (eg, two or more ports), in order to avoid interference, the network device may need to allocate a CSI-RS resource for each port. In this case, the overhead of CSI-RS resources will increase sharply.

In view of this, the present application provides a resource allocation method and device, which can effectively improve the situation that the overhead of CSI-RS resources increases with the increase of the number of TRPs in the cooperative TRP set of the UE, and effectively reduce the resource overhead. Further, in a communication system with a large number of UEs, when the coordinated TRP sets of multiple UEs in a large number of UEs are the same, the coordinated TRPs in the coordinated TRP sets of the multiple UEs can use the same time-frequency resources to send CSI-RS , so the method provided by this application can more effectively reduce the overhead of CSI-RS resources. In particular, the method provided in this application can reduce the CSI-RS resource overhead in large-scale collaboration scenarios while ensuring performance. It can be understood that the large-scale cooperation scenario can be understood as: for UEs within a certain range, the number of coordinated TRPs within the certain range is greater than or equal to a certain number. If the number of cooperative TRPs within a certain range is equal to 10 or 21, the embodiment of the present application does not limit the value of the certain number. For example, the number of TRPs in the coordinated TRP set of different UEs within a certain range is: 3, 2, 3, 3 in sequence, and the above-mentioned certain number is equal to 10, then the number of coordinated TRPs within this certain range is equal to 11 (greater than 10), It is a large-scale collaboration scenario. It can be understood that for specific descriptions of large-scale collaboration scenarios, reference may also be made to relevant standards or protocols, and this application does not limit large-scale collaboration scenarios.

Before introducing the resource allocation method involved in this application, the terms involved in this application will be described in detail.

1. CSI-RS resources

Exemplarily, the CSI-RS resources may be used to represent any one or more of resources such as time domain resources, frequency domain resources, or space domain (code domain) resources occupied by sending the CSI-RS. The CSI-RS resource may be correspondingly associated with configuration information (also referred to as correspondence), and the configuration information may be used to determine the CSI-RS resource, or it may also be referred to as configuration information including CSI-RS resource information. Exemplarily, the CSI-RS resources may be associated with (also referred to as corresponding to) any one or more of the following (or, information that may also be referred to as a CSI-RS resource includes any or more of the following): time domain period , time domain offset, resource mapping (such as RE position), number of antenna ports, frequency domain density, code division multiplexing (code division multiplexing, CDM) type, power parameter or scrambling identification (identity, ID), etc. It can be understood that for descriptions about CSI-RS resources, reference may be made to relevant standards or protocols, etc., which are not limited in this application.

2. Scrambling ID

The scrambling ID can be used to generate a pilot sequence. Exemplarily, the TRP can generate a pilot sequence according to the scrambling ID, and map the pilot sequence to a resource element (resource element, RE) allocated by the base station for the UE, and then send it out with a certain power. A signal sent with a certain power may be called a pilot used for measuring channel information, such as a CSI-RS.

Exemplarily, the relationship between the scrambling ID and the pilot sequence may be as follows:

Among them, r(m) represents a symbol in the pilot sequence generated according to the scrambling ID.

In this application, optionally, m represents the number of REs on one orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol. Optionally, m represents the number of REs on multiple OFDM symbols. The multiple OFDM symbols may be related to the time domain resources occupied by the UE's cooperative TRP for sending CSI-RS multiple times according to the same scrambling ID. Exemplarily, the number of the multiple OFDM symbols may be equal to the sum of the numbers of OFDM symbols occupied by one TRP when sending the CSI-RS multiple times according to the same scrambling ID. For example, in the method shown in FIG. 5a below, the number of the multiple OFDM symbols can be determined according to the number of times a TRP sends a CSI-RS according to the same scrambling ID. As shown in Figure 5a, the number of the multiple OFDM symbols may be equal to the sum of the number of OFDM symbols occupied by the first CSI-RS sent by the TRP and the number of OFDM symbols occupied by the second CSI-RS sent by the TRP. In each of the embodiments shown below, the pilot sequence may be generated according to the number of REs on one OFDM symbol and the scrambling ID, or the long pilot sequence may be generated according to the number of REs and the scrambling ID on multiple OFDM symbols. When the long pilot sequence is generated by the number of REs on multiple OFDM symbols, the pilot sequences generated between different TRPs can be made to have low correlation, thereby further improving the performance of channel estimation.

It can be understood that m represents the number of REs on one OFDM symbol, and it can also be understood that the value range of m is the number of REs on one OFDM symbol. It may also be understood that m represents the number of REs on multiple OFDM symbols, and the value range of m is the number of REs on the multiple OFDM symbols. For example, the minimum value of m may be 0, or 1, etc., which is not limited in the present application.

Wherein, c(i) is a pseudo-random sequence used to generate r(m), and the pseudo-random sequence can be determined by an initialization factor c _init . The c _init may be jointly determined by multiple factors, such as symbol ID, time slot ID, or scrambling ID. like

Indicates the number of symbols included in a slot.

Indicates the slot number in a radio frame. l represents the number of the symbol. n _ID represents a scramble ID.

It can be understood that the relationship between the scrambling ID and the pilot sequence shown here is only an example, and for the relationship between the scrambling ID and the pilot sequence, reference may also be made to relevant standards or protocols.

It can be understood that the relationship between the scrambling ID and the pilot sequence shown here is also applicable to the relationship between the first scrambling ID and the pilot sequence generated according to the first scrambling ID and the second The relationship between the scrambling ID and the pilot sequence generated according to the second scrambling ID will not be described in detail below.

3. Collaborative TRP collection

Multi-station coordinated transmission is a method to improve resource utilization and reduce inter-cell interference. Multi-station coordinated transmission technologies include coordinated beamforming, coordinated scheduling, joint transmission, dynamic point selection, dynamic point blanking, etc. . Exemplarily, base stations (or TRPs) may interact through backhaul, air interface, and other means to coordinate and transmit required information. Through these transmission technologies, the interference to edge users can be reduced and the performance of the system can be improved. Exemplarily, multiple TRPs can provide services (for example, transmit data or signaling) for a UE on the same scheduling unit, and the multiple TRPs can be understood as a set of coordinated TRPs of the UE. The same scheduling unit shown here may include any one of the same transmission time interval (transmission time interval, TTI), the same time slot (slot), or the same OFDM symbol. Exemplarily, the TRP shown in this application may be a transceiver point, and the transceiver point may be different base stations in physical entities, or different antenna panels of a base station.

Fig. 3 is a schematic diagram of a multi-station cooperation scenario provided by an embodiment of the present application. As shown in FIG. 3 , the dotted line part represents the cooperative TRP set of the UE. Assuming that each UE has a coordinated TRP set, the coordinated TRP sets between different UEs may be different. For example, the coordinated TRP set of UE1 includes TRP1 and TRP2, the coordinated TRP set of UE2 includes TRP3 and TRP4, and the coordinated TRP set of UE3 includes TRP1, TRP3 and TRP4. For another example, when the distance between the UE and a certain TRP is relatively short, and the distance between the UE and other TRPs is relatively long, only one TRP (TRP5 as shown in FIG. 3 ) may serve the UE.

Fig. 4 is a schematic flowchart of a resource configuration method provided in the embodiment of the present application. As shown in Fig. 4, the method includes:

401. The network device determines configuration information, where the configuration information includes information about a first CSI-RS resource, where the first CSI-RS resource corresponds to multiple first scrambling IDs.

Exemplarily, the foregoing network device may be a base station. For example, the base station can be used to control the cooperative TRP set of the UE. The coordinated TRP set of the UE may be different TRPs on a physical entity, or the coordinated TRP set of the UE may be different antenna panels of the base station or the like. Alternatively, the network device may be a control node, such as a TRP included in the cooperative TRP set of the UE.

Exemplarily, the information of the first CSI-RS resource may include: any one or more items of information such as time domain period, time domain offset, frequency domain density, frequency domain offset, or resource mapping. For example, the period in the time domain can be used to determine the period in the time domain, and the offset in the time domain can be used to determine the offset in the time domain. The frequency domain density is used to determine the number of REs occupied by ports on the RB, and the frequency domain offset is used to determine the RE offset on the RB. For example, the frequency domain offset can be used to determine the RE offset on RB0. The resource mapping may be used to determine relative positions between different ports, for example, the resource mapping may be used to determine time domain positions and/or frequency domain positions of other ports relative to port0 (port0). It can be understood that the specific content of the information of the first CSI-RS resource is not limited in this embodiment of the present application.

Exemplarily, the first scrambling ID can be used to generate the pilot sequence. It can be understood that the above multiple first scrambling IDs can also be understood as at least two first scrambling IDs. That is to say, the first CSI-RS resource may correspond to at least two first scrambling IDs. For example, the first CSI-RS resource may correspond to two first scrambling IDs, or the first CSI-RS resource may correspond to three first scrambling IDs, and so on. In this embodiment of the present application, the number of first scrambling IDs may be the same as the number of TRPs in the cooperative TRP set of the UE, or may also be determined by the network device.

It can be understood that, for the specific description of the first CSI-RS resource, refer to the above description of the CSI-RS resource, and for the specific description of the first scrambling ID, refer to the above description of the scrambling ID, which will not be repeated here. The relationship between the first CSI-RS resource and the first scrambling ID may be as follows, which will not be described in detail here.

The above configuration information includes information about the first CSI-RS resource, and the first CSI-RS resource corresponds to multiple first scrambling IDs, which may be implemented in the following ways:

Implementation method one,

The configuration information includes information of the first CSI-RS resource and indication information of multiple first scrambling IDs. Thus, the network device directly indicates the first CSI-RS resource and multiple first scrambling IDs corresponding to the first CSI-RS resource through the configuration information.

Alternatively, the configuration information includes information about the first CSI-RS resource. In addition, the network device may indicate multiple first scrambling IDs through other information. By including the information of the first CSI-RS resource in the configuration information and indicating multiple first scrambling IDs through other information such as indication information, when the first scrambling ID needs to be modified, the network device can timely use the indication information to Indicates the modified first scramble ID. This implementation improves the situation that the network device needs to simultaneously reconfigure the first CSI-RS resource and multiple first scrambling IDs corresponding thereto, and is more flexible. Optionally, the above indication information includes each of the multiple first scrambling IDs.

Optionally, the above indication information includes an index of each first scrambling ID among the multiple first scrambling IDs.

Optionally, the above indication information includes multiple pieces of quasi co-located (quasi co-located, QCL) information, where one piece of QCL information corresponds to one first scrambling ID. Exemplarily, the QCL information may include a synchronization signal and a physical broadcast channel (physical broadcast channel, PBCH) block (synchronization signal and PBCH block, SS/PBCH block) (referred to as SSB) or CSI-RS, etc., the SSB or CSI- The RS itself corresponds to a scrambling ID, so the scrambling ID corresponding to the SSB or CSI-RS itself can be used as the first scrambling ID. Therefore, by indicating the QCL information, the UE can learn the first scrambling ID of the TRP corresponding to the QCL information. That is to say, the UE may use the scrambling ID corresponding to the SSB or the CSI-RS itself as the first scrambling ID corresponding to the TRP.

Optionally, the above indication information includes a plurality of transmission configuration indicator (transmission configuration indicator, TCI) state IDs, where one TCI state ID corresponds to one first scrambling ID. For example, the UE may generate the first scrambling ID according to the ID of the TCI state. Exemplarily, the relationship between the ID of the TCI state and the first scrambling ID may be as follows:

Wherein, r(m) represents a symbol in the pilot sequence generated according to the first scrambling ID. m represents the number of REs on one symbol, or m represents the number of REs on multiple symbols. c(i) is a pseudo-random sequence used to generate r(m), and the pseudo-random sequence can be determined by an initialization factor c _init . The c _init may be jointly determined by multiple factors, such as a symbol identifier, a time slot identifier, or a first scrambling ID. like

Indicates the number of symbols included in a slot.

Indicates the slot number in a radio frame. L represents the number of the symbol. n _ID represents the first scramble ID generated according to the ID of the TCI state. For example, the n _ID can be generated based on the ID of the baseline and the ID of the TCI state. The value of X can be any integer from 1 to 31. TCIid indicates the ID of the TCI state.

Implementation method two,

The configuration information includes information about the first CSI-RS resource. Multiple first scrambling IDs corresponding to the first CSI-RS resource may be preset (for example, defined by a communication protocol) or pre-negotiated. For example, the UE negotiates with the network device in advance, so that the multiple first scrambling IDs are stored in the UE and the network device (such as in a base station or a controller). For another example, the multiple first scrambling IDs are defined by a protocol, which is not limited in this embodiment of the present application.

By setting multiple first scrambling IDs in a preset manner, the network device and the terminal device can not only learn the multiple first scrambling IDs corresponding to the first CSI-RS resource, but also save signaling overhead.

402. The network device sends configuration information.

Exemplarily, the network device may be a base station used to control the coordinated TRP set of the UE. For example, the base station may send the configuration information to a TRP in the coordinated TRP set of the UE, and then the TRP sends the configuration information to the UE and other TRPs respectively. For another example, the base station may send configuration information to a TRP in the coordinated TRP set of the UE and the UE respectively, and then the TRP sends configuration information to other TRPs. For another example, the base station may send the configuration information to each TRP in the coordinated TRP set of the UE, and then one TRP in the coordinated TRP set sends the configuration information to the UE. For another example, the base station may send configuration information to each TRP in the coordinated TRP set of the UE, and send the configuration information to the UE (402 in the dotted line part shown in FIG. 4 ). The embodiment of this application is not limited. Correspondingly, the UE and each TRP in the coordinated TRP set of the UE receive the configuration information respectively.

Exemplarily, the network device may be a control node in the coordinated TRP set of the UE. For example, the control node may send configuration information to other TRPs and send configuration information to UE. Correspondingly, other TRPs receive the configuration information, and the UE receives the configuration information.

Exemplarily, if the cooperative TRP set of the UE is different antenna panels of the base station, the base station can directly send configuration information to the UE, and correspondingly, the UE receives the configuration information. For example, different antenna panels of the base station may be connected to the control node of the base station, so that after the configuration information is determined by the control node of the base station, one of the different antenna panels of the base station sends the configuration information to the UE. Correspondingly, the UE receives the configuration information.

In a possible implementation, the method shown in Figure 4 further includes:

The network device sends indication information, where the indication information is used to indicate multiple first scrambling IDs. For example, the indication information may be included in any of the following signalings: radio resource control (radio resource control, RRC) signaling, media access control-control element (media access control-control element, MAC-CE) signaling Or downlink control information (DCI). That is to say, the configuration information sent by the network device may include indication information of multiple first scrambling IDs, or may not include the indication information. Instead, other information is used to indicate the multiple first scrambling IDs. It can be understood that the embodiment of the present application does not limit the order in which the network device sends the configuration information and the indication information.

It can be understood that the embodiment of the present application does not limit the method for the network device to send the configuration information. Through the above method, each TRP in the coordinated TRP set of the UE can learn the configuration information, so that each TRP in the coordinated TRP set of the UE can send the first CSI-RS resource and the first scrambling ID according to the first CSI-RS. It can be understood that the first scrambling ID corresponding to each TPR may be configured by a network device, etc., which is not limited in this embodiment of the present application. For example, the first CSI-RS resource corresponds to the first scrambling ID1, the first scrambling ID2, and the first scrambling ID3. Each TRP in the cooperative TRP set of the UE can know its corresponding first scrambling ID. For example, TRP1 can know that it needs to generate pilot sequence 1 according to the first scrambling ID1, and TRP2 can know that it needs to generate pilot sequence 1 according to the first scrambling ID. ID2 generates pilot sequence 2, and TRP3 can learn that it needs to generate pilot sequence 3 according to the first scrambling ID3. Exemplarily, the method for each TRP in the coordinated TRP set of the UE to obtain its corresponding first scrambling ID may include: 1. Different TRPs in the coordinated TRP set of the UE perform interactive negotiation to determine their corresponding first scrambling IDs. A scrambled ID. It can be understood that in this manner, after the negotiation between different TRPs is completed, any TRP in the cooperative TRP set of the UE may send the negotiation result to the network device (such as a base station or a control node, etc.). Thus, the network device can be made to know the first scrambling ID corresponding to each TRP. 2. The configuration information includes information used to indicate the correspondence between the TRP and the first scrambling ID. Alternatively, the information used to indicate the correspondence between the TRP and the first scrambling ID may not be included in the configuration information, but may be indicated by other information, which is not limited in this embodiment of the present application. 3. The TRP and its corresponding first scrambling ID may be preset (for example, defined by a communication protocol). That is to say, the corresponding relationship between the TRP and the first scrambling ID may be preset. The method for the TRP to obtain its corresponding first scrambling ID shown here is only an example, which is not limited in this embodiment of the present application.

Exemplarily, the format of the configuration information in the above implementation mode 1 may be as follows:

Wherein, CSI-RS resource config represents configuration information, Resource ID represents the identifier of the first CSI-RS resource, and Scrambling ID1 and Scrambling ID2 represent two first scrambling IDs. It can be understood that the omission of the ellipsis above may be the specific content of the first CSI-RS resource, such as any one of time domain period, time domain offset, resource mapping, number of antenna ports, frequency domain density, CDM type or power parameter or more.

It can be understood that the format of the configuration information shown above is only an example, and should not be construed as a limitation to this embodiment of the application.

403. The terminal device receives multiple first CSI-RSs from multiple TRPs according to the first CSI-RS resource and multiple first scrambling IDs, and one first scrambling ID is used for one TRP to generate one first CSI-RS .

For example, the UE receives a first CSI-RS sent by a TRP according to a first scrambling ID on the first CSI-RS resource; similarly, the UE receives another TRP on the first CSI-RS resource according to another Another first CSI-RS sent by the first scrambling ID. Optionally, the UE may also receive another first CSI-RS sent by another TRP according to another first scrambling ID on the first CSI-RS resource.

In this embodiment of the present application, the number of coordinated TRPs of the UE may be multiple. For example, the coordinated TRP sets of the UE are TRP1, TRP2, . . . , TRPn, where n is an integer greater than 1. Exemplarily, the number of coordinated TRPs of the UE is the same as the number of first CSI-RSs received by the UE. That is to say, the UE may respectively receive the first CSI-RS sent by different TRPs according to the first CSI-RS resource and multiple first scrambling IDs. It can be understood that, in this embodiment of the present application, the first scrambling IDs corresponding to different TRPs are different, and thus the first CSI-RSs sent by different TRPs are also different. For example, the first CSI-RS transmitted by TRP1 may be the pilot sequence 1 generated according to the first scrambling ID1 transmitted on the first CSI-RS resource, and the first CSI-RS transmitted by TRP2 may be the pilot sequence 1 generated on the first CSI-RS resource. The pilot sequence 2 generated according to the first scrambling ID2 sent on the RS resource, the first CSI-RS sent by TRP3 may be the pilot sequence 3 generated according to the first scrambling ID3 sent on the first CSI-RS resource . Wherein, the first scrambled ID1, the first scrambled ID2 and the first scrambled ID3 all belong to the first scrambled ID, but because their corresponding TRPs are different, the values of the IDs are different.

During network planning, generally, multiple TRPs with larger reference signal received power (RSRP) when the reference signal arrives at the UE are selected to provide services for the UE. For example, the network device may determine the cooperative TRP set of the UE according to the relationship from the TRP of the reference signal to the RSRP of the UE from large to small, such as selecting the first few TRPs with high RSRPs as the cooperative TRP of the UE. It can be understood that the method for determining the coordinated TRP set for the UE shown here is only an example, and this embodiment of the present application does not limit the method for determining the coordinated TRP set for the UE.

In this embodiment of the present application, optionally, the number of first scrambling IDs may be determined according to the size of the UE's cooperating set. For example, if the cooperative TRPs of the UE are TRP1, TRP2, and TRP3, then the size of the cooperative set of the UE is 3. Therefore, the network device can configure 3 first scrambling IDs for the UE. Optionally, the number of first scrambled IDs is preset by a network device (such as a base station or a control node, etc.), or is defined by a protocol. For example, the number of first scrambling IDs is set to three in advance. It can be understood that the description about the quantity of the first scrambling ID is also applicable to the description of the quantity of the second scrambling ID below. It can be understood that the embodiment of the present application does not limit the method for determining the size of the coordination set.

For example, the cooperative TRP set of the UE includes TRP1, TRP2, and TRP3, then TRP1 can use the first scrambling ID on the first CSI-RS resource (that is, the scrambling ID1 corresponding to TRP1, and the scrambling ID1 belongs to the first scrambling ID1). scrambling ID) to send the first CSI-RS (such as CSI-RS1, and CSI-RS1 belongs to the first CSI-RS), TRP2 can use the first scrambling ID (that is, the scrambling corresponding to TRP2) on the first CSI-RS resource ID2, and the scrambling ID2 belongs to the first scrambling ID) to send the first CSI-RS (that is, CSI-RS2, and the CSI-RS2 belongs to the first CSI-RS), TRP3 can be based on the first CSI-RS resource on the first CSI-RS resource The scrambling ID (that is, the scrambling ID3 corresponding to TRP3, and the scrambling ID3 belongs to the first scrambling ID) sends the first CSI-RS (that is, CSI-RS3, and the CSI-RS3 belongs to the first CSI-RS). Correspondingly, the UE may receive CSI-RS1, CSI-RS2 and CSI-RS3 according to the scrambling ID1, scrambling ID2 and scrambling ID3 respectively.

Optionally, the method shown in FIG. 4 further includes step 404 and step 405 .

404. The UE performs channel estimation according to the multiple first CSI-RSs.

Exemplarily, the UE may perform channel estimation through a least squares (least squares) algorithm. Optionally, the UE may also use a filtering algorithm to reduce the impact of noise. For example, the UE can learn the pilot sequence at a specific resource position according to the first CSI-RS resource, so that after receiving the signal (such as the first CSI-RS), the UE can use the LS algorithm to restore the channel. As another example, in this embodiment of the present application, different first scrambling IDs correspond to different pilot sequences, so that the UE can perform multiple LS estimations on the same received signal, and different pilot sequences (also called pilot symbols) to perform channel estimation to obtain channel estimation results respectively. For another example, the UE can first solve the channel corresponding to a pilot sequence (such as the first ID sorting or configuration), and then subtract the channel information corresponding to the pilot sequence from the received signal, and then estimate other pilot sequences ( It can be referred to as joint channel estimation between pilot sequences for short).

Exemplarily, the coordinated TRP set of UE1 includes TRP1, TRP2, and TRP3, and UE1 may respectively receive three first CSI-RSs on the first CSI-RS resource. Thus, UE1 can demodulate three channels respectively. It can be understood that the embodiment of the present application does not limit whether the UE needs to know the correspondence between the TRP and the first scrambling ID. If the UE1 does not know the correspondence between the TRP and the first scrambling ID before performing channel estimation, it only needs to correspond the channel information obtained according to different first scrambling IDs when performing channel estimation. For example, the cooperative TRP set of UE1 includes TRP1, TRP2 and TRP3, and the signal received by UE1 is y, y=h ₁ *s ₁ +h ₂ *s ₂ +h ₃ *s ₃ +I+n, where I Indicates the interference signal, and n indicates the noise. The multiple first scrambling IDs corresponding to the first CSI-RS resource include scrambling ID1, scrambling ID2, and scrambling ID3. For example, when UE1 performs channel estimation, s ₁ is generated according to scrambling ID1, then h ₁ is the channel response corresponding to scrambling ID1; s ₂ is generated according to scrambling ID2, then h ₂ is corresponding to scrambling ID2 Channel response; s ₃ is generated according to scrambling ID3, then h ₃ is the channel response corresponding to scrambling ID3. Then, when UE1 reports the measurement result, it only needs to indicate to the network device the corresponding relationship between the channel response and the first scrambling ID. For the specific description of UE1 reporting the measurement result, refer to the following, and details will not be described here.

405. The UE reports the measurement result of channel estimation.

Optionally, after demodulating all channels corresponding to its coordinated TRPs, the UE may report the channel measurement results of multiple TRPs together. Exemplarily, when the UE reports the measurement result, it may set the channel information corresponding to the multiple TRPs according to the configuration order of the multiple first scrambling IDs, or the order of the magnitude of the multiple first scrambling IDs. For example, the cooperative TRP set of the UE includes TRP1 and TRP2, and the configuration order of the first scrambling ID in the configuration information is scrambling ID1 (corresponding to TRP1), scrambling ID2 (corresponding to TRP2), and the UE obtains channel information 1 and The channel information 2 is obtained according to the scrambling ID2, so that the measurement results may be channel information 1 and channel information 2 in sequence. Thus, after the network device obtains the measurement result, it can obtain the corresponding channel information according to the configuration sequence of the first scrambling ID, that is, it knows that channel information 1 corresponds to the channel information of TRP1, and channel information 2 corresponds to the channel of TRP2. information.

Optionally, the UE may also report channel measurement results of multiple TRPs respectively. For example, after demodulating the channel information corresponding to TRP1, the UE reports the channel information corresponding to TRP1. After the UE demodulates the channel information corresponding to TRP2, it reports the channel information corresponding to TRP2. That is to say, the UE may sequentially report channel information corresponding to different TRPs. Optionally, when the UE reports the information corresponding to different TRPs, it may report the first scrambling IDs corresponding to different TRPs. For example, when reporting the channel information corresponding to TRP1, the UE may also report the scrambling ID1 corresponding to TRP1; when reporting the channel information corresponding to TRP2, it may also report the scrambling ID2 corresponding to TRP2.

It can be understood that, regarding the method for the UE to report channel information, reference may be made to the method for sending configuration information by a network device, which is not limited in this embodiment of the present application. It can be understood that after the UE performs channel estimation, it may also perform other processing, such as quantizing the channel information into a CSI feedback amount, and then reporting. For example, the UE may report feedback information through a physical uplink control channel (physical uplink control channel, PUCCH) or a physical uplink shared channel (physical uplink shared channel, PUSCH), or load measurement information through a pilot to report, etc.

In a possible implementation, the method shown in Figure 4 may also include:

The terminal device sends capability information to the network device, which can be used to indicate any one or more of the following: the number of supported scrambling IDs, the duration of channel estimation, whether to support a joint sequence of multiple symbols or whether to support a joint channel estimation. Correspondingly, the network device receives the capability information.

That is to say, the UE can report the number of scrambling IDs supported by one CSI-RS resource. Alternatively, the UE may report whether or how much the required CSI calculation time will be increased when using the method provided by the embodiment of the present application. By reporting the above capability information, the UE can enable the network device to set configuration information for the UE according to the capability information. By reporting whether the joint sequence of multiple symbols is supported, the network device can adjust the generation mode of the pilot sequence in time, and by reporting whether the joint channel estimation is supported, the network device can adjust the demodulation performance in time. Exemplarily, if the UE supports a joint sequence of multiple symbols (also called a long pilot sequence), it means that the pilot sequence can be determined according to the number of REs on multiple OFDM symbols and the first scrambling ID; if not supported A joint sequence of multiple symbols means that the pilot sequence can be determined according to the number of REs on one OFDM symbol and the first scrambling ID. For example, if the UE supports a joint sequence of multiple symbols, the TRP can generate a pilot sequence according to the number of REs on multiple OFDM symbols and their corresponding first scrambling IDs. At the same time, the UE can also generate a pilot sequence according to the The number of REs and the first scrambling ID decodes the pilot sequence. It can be understood that, for the description of the relationship among the first scrambling ID, the pilot sequence and the CSI-RS, reference may be made to the above, and details will not be described here.

It can be understood that the capability information shown in the embodiment of the present application is not shown in FIG. 4 , but it should not be construed as a limitation to the embodiment of the present application. The embodiment of the present application does not limit the sequence of the capability information and the configuration information. For example, the terminal device may first send capability information to the network device, and then the network device sends configuration information to the terminal device.

It can be understood that the method provided by the embodiment of the present application can be applied to a UE, that is, different TRPs in the cooperative TRP set of a UE use the same time-frequency resource to transmit the first CSI generated according to their respective first scrambling IDs -RS. Or, it may also be applied to multiple UEs, for example, different TRPs in the coordinated TRP set of the multiple UEs use the same time-frequency resource to send the first CSI-RS generated according to the first scrambling ID corresponding to each pair. Exemplarily, when the method provided by the embodiment of this application is applied to multiple UEs, if the coordinated TRP sets of two UEs among the multiple UEs are the same, in this case, the coordinated TRP sets of the two UEs can both use The same first CSI-RS resource sends the first CSI-RS generated according to the corresponding first scrambling IDs. For example, the cooperative TRP sets of the two UEs (such as UE1 and UE2) are all TRP1, TRP2, and TRP3, then TPR1 can send UE1 and UE2 the first CSI-RS resource according to the first scrambling ID (ie, TRP1 Corresponding scrambling ID1, and scrambling ID1 belongs to the first CSI-RS generated by the first scrambling ID) (such as CSI-RS1, and CSI-RS1 belongs to the first CSI-RS); TPR2 can be in the first CSI-RS Send the first CSI-RS generated according to the first scrambling ID (that is, the scrambling ID2 corresponding to TRP2, and the scrambling ID2 belongs to the first scrambling ID) to UE1 and UE2 on resources RS2 belongs to the first CSI-RS); TPR3 can send to UE1 and UE2 on the first CSI-RS resource respectively according to the first scrambling ID (that is, the scrambling ID3 corresponding to TRP3, and the scrambling ID3 belongs to the first scrambling ID ) generated by the first CSI-RS (such as CSI-RS3, and CSI-RS3 belongs to the first CSI-RS). For another example, UE1's coordinated TRP set includes TRP1 and TRP2, and UE2's coordinated TRP set includes TRP1 and TRP3, then TRP1 can send UE1 and UE2 the first CSI-RS resource based on the first scrambling ID (that is, TRP1 corresponds to scrambling ID1, and scrambling ID1 belongs to the first CSI-RS generated by the first scrambling ID) (such as CSI-RS1, and CSI-RS1 belongs to the first CSI-RS); TRP2 can be in the first CSI-RS resource Send the first CSI-RS (such as CSI-RS2) generated according to the first scrambling ID (that is, the scrambling ID2 corresponding to TRP2, and the scrambling ID2 belongs to the first scrambling ID) to UE1 (such as CSI-RS2, and CSI-RS2 belongs to the first CSI-RS); TRP3 can send the first CSI-RS generated according to the first scrambling ID (that is, the scrambling ID3 corresponding to TRP3, and the scrambling ID3 belongs to the first scrambling ID) to UE2 on the first CSI-RS (such as CSI-RS3, and CSI-RS3 belongs to the first CSI-RS).

In this embodiment of the present application, different TRPs in the coordinated TRP set of the UE can respectively send the first CSI-RS through the same CSI-RS resource (such as the same time-frequency resource). Frequency resources are used to transmit different first CSI-RSs (that is, different TRPs of a UE can multiplex the same time-frequency resources to transmit CSI-RSs). Since different TRPs can respectively use different first scrambling IDs to generate different pilot sequences (for example, different pilot sequences can achieve pseudo-orthogonality), effectively weakening the interference between different signals. For example, each TRP in the UE's cooperative TRP set can multiplex the same time-frequency resources, but use different scrambling IDs to generate different pilot sequences, thereby mapping the pilot sequences to the same time-frequency resources sent to the UE. Since each TRP in the cooperative TRP set can use the same time-frequency resources, the overhead of CSI-RS resources is improved as the number of cooperative TRPs in the UE's cooperative TRP set increases, effectively reducing the CSI-RS resource overhead. Correspondingly, the UE can perform channel estimation in combination with the different first scrambling IDs, and obtain channel information (also called channel state information) between the different TRPs and the UE.

Fig. 5a is a schematic flowchart of a resource configuration method provided by an embodiment of the present application. By repeatedly sending CSI-RS, the resource configuration method can effectively improve the situation that the overhead of CSI-RS resources increases with the increase of the number of TRPs in the cooperative TRP set of the UE, and reduce the overhead of CSI-RS resources. Effectively improve the signal to interference plus noise ratio (SINR) and improve the decoding performance of CSI-RS. As shown in Figure 5a, the method includes:

501. The network device determines configuration information, where the configuration information includes information about a first CSI-RS resource, where the first CSI-RS resource corresponds to multiple first scrambling IDs.

Optionally, the configuration information further includes information about at least one other CSI-RS resource, and each CSI-RS resource in the at least one other CSI-RS resource also corresponds to the multiple first scrambling IDs. For example, the configuration information includes information about the first CSI-RS resource and information about the second CSI-RS resource. In addition, the first CSI-RS resource corresponds to multiple first scrambling IDs, and the second CSI-RS resource corresponds to the multiple first scrambling IDs.

It can be understood that, in this embodiment of the present application, since each of the multiple CSI-RS resources included in the configuration information may correspond to multiple first scrambling IDs, therefore, the relationship between the CSI-RS resource and the first scrambling ID The description of a scrambling ID can refer to FIG. 4 , and will not be described in detail here. For example, the configuration information includes information about each of the multiple CSI-RS resources and indication information of multiple first scrambling IDs. For another example, the configuration information includes information about each CSI-RS resource in the multiple CSI-RS resources. In addition, the network device indicates multiple first scrambling IDs through other information. No more details here.

502. The network device sends configuration information.

In a possible implementation manner, the network device may send information about one CSI-RS resource (such as a first CSI-RS resource) and indication information about multiple first scrambling IDs corresponding to the CSI-RS resource.

In another possible implementation manner, the network device may simultaneously send the information of each CSI-RS resource among the multiple CSI-RS resources and the indication information of multiple scrambling IDs corresponding to each CSI-RS resource. Alternatively, the network device may also separately send the information of each CSI-RS resource among the multiple CSI-RS resources and the indication information of multiple scrambling IDs. This embodiment of the present application does not limit it.

It can be understood that for related descriptions of step 501 and step 502, reference may be made to step 401 and step 402 shown in FIG. 4 , and details are not repeated here.

In a possible implementation manner, after the terminal device receives the configuration information, the method shown in FIG. 5a further includes:

503. The terminal device acquires the second CSI-RS resource. And each TRP in the coordinated TRP set of the terminal device may also determine the second CSI-RS resource.

The method for obtaining the second CSI-RS resource may be as follows:

Optionally, the terminal device acquires the second CSI-RS resource according to the configuration information. As shown in step 501 above, the configuration information may include the first CSI-RS resource and the second CSI-RS resource. In this case, there is no limitation on the order in which the terminal device acquires the first CSI-RS resource and the second CSI-RS resource.

Optionally, the configuration information may not include the second CSI-RS resource, and the second CSI-RS resource may be determined according to the first CSI-RS resource and a pattern (pattern). Exemplarily, the pattern may be predefined by a protocol, or configured by a network device, indicated by configuration information or other information, etc., which is not limited in this embodiment of the present application. The pattern type includes any one of frequency-domain repetition, time-frequency repetition, or a specific pattern. Exemplarily, the terminal device can determine the second CSI-RS resource according to the pattern and the first CSI-RS resource. Exemplarily, the terminal device may determine the relationship between the first CSI-RS resource and the second CSI-RS resource according to the pattern.

Exemplarily, the second CSI-RS resource may be a repetition (retetition) of the first CSI-RS resource on the time domain resource. For example, the second CSI-RS resource is adjacent to the first CSI-RS resource in the time domain, or the difference between the second CSI-RS resource and the first CSI-RS resource is one or more OFDM symbols, etc., the embodiment of the present application There is no limit to this. Exemplarily, the second CSI-RS resource is a repetition of the first CSI-RS resource on frequency domain resources. For example, the second CSI-RS resource is adjacent to the first CSI-RS resource in the frequency domain, or the difference between the second CSI-RS resource and the first CSI-RS resource is one or more REs. This is not limited. Exemplarily, the second CSI-RS resource may be a repetition of the first CSI-RS resource on the time domain resource, or a repetition of the first CSI-RS resource on the frequency domain resource, and so on. For example, the second CSI-RS resource may be a repetition of the first CSI-RS resource on an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol, a time slot (slot), or a frame. For another example, the second CSI-RS resource may be a repetition of the first CSI-RS resource on a subcarrier, a resource element (resource element, RE), or a resource block (resource block, RB). For another example, the second CSI-RS resource may be the repetition of the first CSI-RS resource on the OFDM symbol, etc., which will not be listed here. It can be understood that the size of the second CSI-RS resource shown in the embodiment of the present application may be exactly the same as the size of the first CSI-RS resource. It can be understood that the second CSI-RS resource shown in the embodiment of the present application is only an example, for example, the UE may also determine a third CSI-RS resource or a fourth CSI-RS resource, and the like. For example, the third CSI-RS resource may be a repetition of the second CSI-RS resource in the time domain, or the third CSI-RS resource may be another repetition of the first CSI-RS resource in the time domain resource, etc., this The embodiment of the application does not limit the method for determining the third CSI-RS resource. For example, the time domain difference between the third CSI-RS resource and the second CSI-RS resource is one OFDM symbol, and the time domain difference between the second CSI-RS resource and the first CSI-RS resource is one OFDM symbol. For another example, the frequency domain difference between the third CSI-RS resource and the second CSI-RS resource may be one RE, and the frequency domain difference between the second CSI-RS resource and the first CSI-RS resource is one RE.

Fig. 5b is a schematic diagram of resource duplication provided by an embodiment of the present application. Fig. 5b shows a schematic diagram of the coordinated TRP set of the UE using the same resource to send the CSI-RS. For example, if the cooperative TRP set of the UE includes TRP1, TRP2, and TRP3, the three TRPs can all send their first CSI-RSs on RE1 according to their first scrambling IDs, where RE1 corresponds to the first CSI-RS resource. For example, the signal received by the UE on the RE1 is y ₁ , such as y ₁ =h ₁ *s ₁₁ +h ₂ *s ₁₂ +h ₃ *s ₁₃ +I+n. Among them, _h1 is the channel response between TRP1 and UE, _h2 is the channel response between TRP2 and UE, and _h3 is the channel response between TRP3 and UE. s ₁₁ is the CSI-RS signal sent by TRP1 on RE1, s ₁₂ is the CSI-RS signal sent by TRP2 on RE1, s ₁₃ is the CSI-RS signal sent by TRP3 on RE1, I represents the interference signal, and n represents the noise . Optionally, these three TRPs can also transmit their second CSI-RS on RE2 and according to their first scrambling ID, where RE2 can be understood as the first CSI-RS resource in another time domain resource The repetition on , that is, the second CSI-RS resource. For example, the signal received by the UE on the RE2 is y ₂ , such as y ₂ =h ₁ *s ₂₁ +h ₂ *s ₂₂ +h ₃ *s ₂₃ +I+n. Among them, s ₂₁ is the CSI-RS signal sent by TRP1 on RE2, s ₂₂ is the CSI-RS signal sent by TRP2 on RE2, and s ₂₃ is the CSI-RS signal sent by TRP3 on RE2. Optionally, these three TRPs can also transmit their respective third CSI-RSs on RE3 and according to their respective first scrambling IDs, where RE3 can be understood as the first CSI-RS resource in another time domain resource The repetition on , that is, the third CSI-RS resource. The signal received by the UE on the RE3 is y ₃ , for example, y ₃ =h ₁ *s ₃₁ +h ₂ *s ₃₂ +h ₃ *s ₃₃ +I+n. Wherein, s ₃₁ is the CSI-RS signal sent by TRP1 on RE3, s ₃₂ is the CSI-RS signal sent by TRP2 on RE3, and s ₃₃ is the CSI-RS signal sent by TRP3 on RE3. Thus, the UE can demodulate the channel corresponding to TRP1 (ie h ₁ ), the channel corresponding to TRP2 (ie h ₂ ), and the channel corresponding to TRP3 (ie h ₃ ) according to the above formula. It should be understood that, in the embodiment shown in FIG. 5b, one TRP generates different CSI-RS signals on different CSI-RS resources according to one scrambling ID.

It can be understood that the embodiment of the present application does not limit whether the UE needs to know the correspondence between the TRP and the first scrambling ID. It can be understood that the manner in which the TRP sends the CSI-RS on the RE shown in FIG. 5b is only an example. For example, the TRP can also send the CSI-RS on the RB. It should be understood as a limitation to the embodiments of the present application.

Fig. 5c is a schematic diagram of resource duplication provided by an embodiment of the present application. As shown in Figure 5c, subcarrier 1 can be understood as the above-mentioned first CSI-RS resource, and subcarrier 2 can be understood as the repetition of the first CSI-RS resource on the frequency domain resource, that is, the second CSI-RS resource. It can be understood that the subcarrier 1 and the subcarrier 2 shown in FIG. 5c are only examples, and the frequency domain resources shown in FIG. 5c should not be understood as limiting the embodiment of the present application. It can be understood that FIG. 5c only exemplarily shows one TRP1, and the method for sending a CSI-RS of other coordinated TRPs of the UE can refer to TRP1, which will not be described in detail in this embodiment of the present application.

Fig. 5d is a schematic diagram of resource duplication provided by an embodiment of the present application. Fig. 5d shows that the second CSI-RS resource is not only the repetition of the first CSI-RS resource on the time domain resource, but also the repetition of the first CSI-RS resource on the frequency domain resource. It can be understood that FIG. 5d only exemplarily shows one TRP1, and the method for sending a CSI-RS by other coordinated TRPs of the UE can refer to TRP1, which will not be described in detail in this embodiment of the present application.

Optionally, the second CSI-RS resource is determined according to the quantity of the first CSI-RS resource and the first scrambling ID. Optionally, different numbers of first scrambling IDs correspond to different patterns. Exemplarily, the control node or the base station may define a time domain repetition pattern, and the number of repetitions is determined by the number of scrambling IDs. For example, if the number of first scrambling IDs is 2, the pattern of the second CSI-RS resource may be the repetition of the first CSI-RS resource on the time domain resource. For another example, if the number of first scrambling IDs is 3, the pattern of the second CSI-RS resource may be the repetition of the first CSI-RS resource on the frequency domain resource. For another example, if the number of first scrambling IDs is different, the second CSI-RS resource may be a repetition of the first CSI-RS resource on the time domain resource, but the greater the number of the first scrambling ID, the corresponding time domain resource Can be more.

504. The terminal device respectively receives multiple CSI-RSs according to multiple CSI-RS resources and multiple first scrambling IDs, where each CSI-RS resource in the multiple CSI-RS resources corresponds to multiple CSI-RSs, and the Each CSI-RS resource in the multiple CSI-RS resources corresponds to multiple first scrambling IDs. For example, the UE receives multiple first CSI-RSs from multiple TRPs according to the first CSI-RS resources and multiple first scrambling IDs, and receives multiple first CSI-RSs according to the second CSI-RS resources and the multiple first scrambling IDs. Multiple second CSI-RSs from multiple TRPs (as shown in Figure 5a).

In this embodiment of the present application, the number of coordinated TRPs of the UE is the same as the number of first CSI-RSs received by the UE, that is, the number of coordinated TRPs of the UE is the same as the number of second CSI-RSs received by the UE. Exemplarily, if the cooperative TRPs of the UE are TRP1, TRP2, and TRP3, the UE may receive the CSI-RS1_1 belonging to the first CSI-RS sent by TRP1, the CSI-RS1_2 belonging to the first CSI-RS sent by TRP2, and the CSI-RS1_2 sent by TRP2 and sent by TRP3. CSI-RS1_3 belonging to the first CSI-RS. And, the UE may also respectively receive CSI-RS2_1 belonging to the second CSI-RS sent by TRP1, CSI-RS2_2 belonging to the second CSI-RS sent by TRP2, and CSI-RS2_3 belonging to the second CSI-RS sent by TRP3. For example, the plurality of first scrambling IDs are respectively scrambling ID1, scrambling ID2 and scrambling ID3. Then the UE can receive CSI-RS1_1 from TRP1 according to the first CSI-RS resource and scrambling ID1, receive CSI-RS1_2 from TRP2 according to the first CSI-RS resource and scrambling ID2, and receive CSI-RS1_2 from TRP2 according to the first CSI-RS resource and Scrambling ID3 receives CSI-RS1_3 from TRP3. Moreover, the UE may also receive CSI-RS2_1 from TRP1 according to the second CSI-RS resource and scrambling ID1, receive CSI-RS2_2 from TRP2 according to the second CSI-RS resource and scrambling ID2, and receive CSI-RS2_2 from TRP2 according to the second CSI-RS resource Resource and Scrambling ID3 receives CSI-RS2_3 from TRP3.

It can be understood that the above only exemplarily shows two CSI-RS resources, for example, the cooperative TRP sets of the UE are TRP1, TRP2, . . . , TRPn, where n is an integer greater than 2. In order to enable the UE to effectively perform channel estimation, the UE may receive multiple nth CSI-RSs according to the nth CSI-RS resource and multiple first scrambling IDs. It can be understood that when the control node or the base station sets the maximum value of the UE's cooperating set, the n also needs to be less than or equal to the maximum value.

The above only exemplarily shows the second CSI-RS resource. Similarly, this embodiment of the present application may further include a third CSI-RS resource and the like. Thus, the terminal device can also obtain the third CSI-RS resource. Exemplarily, the information of the third CSI-RS resource may be included in the configuration information, or the third CSI-RS resource may be determined according to the first CSI-RS resource and the pattern, or the third CSI-RS resource It may be determined according to the second CSI-RS resource and the pattern. For example, the terminal device may receive multiple third CSI-RSs from multiple TRPs according to the third CSI-RS resource and multiple first scrambling IDs. It can be understood that, for a specific description about the third CSI-RS resource, reference may be made to the second CSI-RS resource, which will not be described in detail here. In this embodiment of the present application, the number of times a TRP sends the CSI-RS may be equal to the number of TRPs in the coordinated TRP set of the UE. For example, if the number of TRPs in the coordinated TRP set of the UE is 3, then for the same TRP, the UE can respectively receive the first CSI-RS, The second CSI-RS sent on the second CSI-RS resource and the third CSI-RS sent on the third CSI-RS resource. At the same time, the pilot sequences of the first CSI-RS, the second CSI-RS and the third CSI-RS are all generated according to the first scrambling ID of the same TRP. It can be understood that the embodiment of the present application may include at least two CSI-RS resources, and the number of CSI-RS resources included may be related to the number of TRPs in the UE's cooperative TRP set, or may be related to other factors. No limit.

Optionally, the method shown in FIG. 5a further includes step 505 and step 506 .

505. The terminal device performs channel estimation according to the multiple CSI-RSs corresponding to the multiple CSI-RS resources. For example, the UE performs channel estimation according to multiple first CSI-RSs and multiple second CSI-RSs. For another example, the UE performs channel estimation according to multiple first CSI-RSs, multiple second CSI-RSs, and multiple third CSI-RSs. Exemplarily, the UE may jointly estimate the pilot sequences sent by the same TRP on multiple CSI-RS resources. For example, after the UE receives two pilot sequences sent from the same TRP, the UE may filter the two pilot sequences, and then use the filtered pilot sequences to perform channel estimation (which may be referred to as joint channel estimation for short). ). The embodiment of the present application does not limit the method for the UE to perform channel estimation.

Optionally, the method shown in FIG. 5a further includes: the UE determines the duration of channel estimation according to the quantity of the first scrambling ID. Alternatively, the UE determines the duration of channel estimation according to the size of its coordinated TRP set. Since the UE can repeatedly send the CSI-RS according to the size of the TRP cooperating set, the UE can estimate the duration of channel estimation according to the size of the cooperating TRP set. Optionally, the UE can also report the duration of the channel estimation, so that the network device can configure the processing delay for the UE, which can be configured in conjunction with the duration of the channel estimation. In this way, the UE can have enough time to perform channel estimation, preventing the UE from timing out before completing the channel estimation.

506. The terminal device reports the measurement result of the channel estimation.

It can be understood that for a specific description of step 506, reference may be made to FIG. 4 , and details are not described here again.

In a possible implementation, the method shown in Figure 5a further includes:

The terminal device sends capability information to the network device, which can be used to indicate any one or more of the following: the number of supported scrambling IDs, the type of pattern supported, the duration of channel estimation, and the The number of scrambling IDs, whether to support joint sequences of multiple symbols or whether to support joint channel estimation. Correspondingly, the network device receives the capability information.

Exemplarily, the frequency domain unit may be any one or more of a carrier (carrier, CC), a bandwidth part (bandwidth part, BWP), a bandwidth (band), and a bandwidth combination (band combination). For example, the UE may report the number of scrambling IDs supported on a CC. For another example, the UE may report the number of scrambling IDs supported on a BWP. For another example, the UE may also report the scrambling ID it supports and so on. Exemplarily, the UE may report the type of repetition pattern supported, such as whether it supports frequency domain repetition, or whether it supports time domain repetition, or supports a specific repetition pattern, and so on. Exemplarily, the UE reports whether it supports the joint sequence of multiple symbols, so that the TRP can also use the joint sequence of multiple symbols to send the CSI-RS according to the capability of the UE.

It can be understood that the capability information shown in the embodiment of the present application is not shown in FIG. 5a , but it should not be construed as a limitation to the embodiment of the present application. For the description of the capability information, reference may also be made to FIG. 4 , which will not be repeated here.

As an example, the configuration information shown in this embodiment of the application may also include the following implementation methods:

If the configuration information includes information on N CSI-RS resources and N scrambling IDs, one CSI-RS resource corresponds to one scrambling ID. Exemplarily, under certain conditions, if the N CSI-RS resources correspond to the same reporting configuration, the UE can default that the scrambling ID corresponding to each CSI-RS resource can be used for the N CSI-RS resources .

For example, the cooperative TRP set of UE includes TRP1 and TRP2, then TRP1 can send CSI-RS (such as CSI-RS1_1) on CSI-RS resource 1 according to the scrambling ID1 (that is, the scrambling ID corresponding to TRP1), and TRP2 can send CSI-RS on CSI-RS resource 1. - Send a CSI-RS (such as CSI-RS1_2) on the RS resource 1 according to the scrambling ID2 (that is, the scrambling ID corresponding to TRP2). TRP1 can also send CSI-RS (such as CSI-RS2_1) on CSI-RS resource 2 according to scrambling ID1, and TRP2 can send CSI-RS (such as CSI-RS2_2) on CSI-RS resource 2 according to scrambling ID2.

It can be understood that the method provided by the embodiment of the present application can be applied to a UE, that is, different TRPs in the cooperative TRP set of a UE use the same time-frequency resource to transmit the first CSI generated according to their respective first scrambling IDs -RS. Or, it can also be applied to multiple UEs. For example, different TRPs in the coordinated TRP set of the multiple UEs can use the same time-frequency resource to transmit the TRPs generated according to the corresponding first scrambling IDs on the same scheduling unit. The first CSI-RS. Exemplarily, when the method provided by the embodiment of the present application is applied to multiple UEs, if the coordinated TRP sets of two UEs among the multiple UEs are the same, in this case, the coordinated TRP sets of the two UEs are in the same The scheduling units may both use the same first CSI-RS resource to send the first CSI-RS generated according to their corresponding first scrambling IDs. Optionally, the coordinated TRP sets of the two UEs may both use the same second CSI-RS resource in the same scheduling unit to send the second CSI-RS generated according to their corresponding first scrambling IDs. Optionally, the coordinated TRP sets of the two UEs may both use the same third CSI-RS resource in the same scheduling unit to send the third CSI-RS generated according to their corresponding first scrambling IDs. It can be understood that, for specific descriptions about the second CSI-RS resource and the third CSI-RS resource, reference may be made to the above, and details are not described here again.

For example, the cooperative TRP sets of the two UEs (such as UE1 and UE2) are all TRP1, TRP2, and TRP3, then TPR1 can send UE1 and UE2 the first CSI-RS resource according to the first scrambling ID (ie, TRP1 Corresponding scrambling ID1, and scrambling ID1 belongs to the first CSI-RS generated by the first scrambling ID) (such as CSI-RS1, and CSI-RS1 belongs to the first CSI-RS); TPR2 can be in the first CSI-RS Send the first CSI-RS generated according to the first scrambling ID (that is, the scrambling ID2 corresponding to TRP2, and the scrambling ID2 belongs to the first scrambling ID) to UE1 and UE2 on resources RS2 belongs to the first CSI-RS); TPR3 can send to UE1 and UE2 on the first CSI-RS resource respectively according to the first scrambling ID (that is, the scrambling ID3 corresponding to TRP3, and the scrambling ID3 belongs to the first scrambling ID ) generated by the first CSI-RS (such as CSI-RS3, and CSI-RS3 belongs to the first CSI-RS). Optionally, TPR1 may send the second scrambling ID generated according to the first scrambling ID (that is, the scrambling ID1 corresponding to TRP1, and the scrambling ID1 belongs to the first scrambling ID) to UE1 and UE2 respectively on the second CSI-RS resource. CSI-RS (such as CSI-RS4, and CSI-RS4 belongs to the second CSI-RS); TPR2 can send the scrambling ID corresponding to the first scrambling ID (that is, TRP2) to UE1 and UE2 respectively on the second CSI-RS resource. ID2, and the scrambling ID2 belongs to the second CSI-RS (such as CSI-RS5, and the CSI-RS5 belongs to the second CSI-RS) generated by the first scrambling ID); UE1 and UE2 send the second CSI-RS (such as CSI-RS6) generated according to the first scrambling ID (that is, the scrambling ID3 corresponding to TRP3, and the scrambling ID3 belongs to the first scrambling ID) CSI-RS). It can be understood that for descriptions about multiple UEs, reference may also be made to FIG. 4 .

In the embodiment of the present application, the performance of channel estimation can be effectively improved by means of CSI-RS resource repetition. The TRPs in the coordinated TRP set of the UE repeatedly send CSI-RS, such as the TRP sends the first CSI-RS, the second CSI-RS, etc., that is, the first CSI-RS and the second CSI-RS sent by the same TRP pass The same channel is sent to the UE, thereby effectively reducing the probability of demodulation errors of the terminal equipment, improving the demodulation performance of the terminal equipment, and improving the channel estimation performance.

Fig. 6 is a schematic flow chart of a resource configuration method provided in the embodiment of the present application. As shown in Fig. 6, the method includes:

601. The network device determines configuration information, where the configuration information includes information about a first CSI-RS resource, where the first CSI-RS resource corresponds to multiple first scrambling IDs.

Optionally, the configuration information may also include indication information of multiple second scrambling IDs. Optionally, the configuration information may also include indication information of multiple second scrambling IDs, indication information of multiple third scrambling IDs, and the like.

Optionally, the configuration information further includes information about one other CSI-RS resource, and each CSI-RS resource in the one other CSI-RS resource corresponds to multiple second scrambling IDs. For example, the configuration information includes the information of the first CSI-RS resource and the information of the second CSI-RS resource, etc., the first CSI-RS resource corresponds to multiple first scrambling IDs, and the second CSI-RS resource corresponds to multiple A second scramble ID.

Optionally, the configuration information also includes information about two other CSI-RS resources, wherein each CSI-RS resource in one other CSI-RS resource corresponds to multiple second scrambling IDs, and the other CSI-RS resource in another CSI-RS resource Each CSI-RS resource corresponds to multiple third scrambling IDs. For example, the configuration information includes information about a first CSI-RS resource, information about a second CSI-RS resource, and information about a third CSI-RS resource, where the first CSI-RS resource corresponds to a plurality of first scrambling IDs, the The second CSI-RS resource corresponds to multiple second scrambling IDs, and the third CSI-RS resource corresponds to multiple third scrambling IDs.

It can be understood that the embodiment of the present application does not limit the number of scrambling IDs included in the configuration information, for example, there may also be a fourth scrambling ID, a fifth scrambling ID, and the like. Similarly, the embodiment of the present application does not limit the number of CSI-RS resources, for example, there may also be a fourth CSI-RS resource, a fifth CSI-RS resource, and the like.

When the above configuration information includes at least two CSI-RS resources, in order to enable related devices (such as UE or TRP, etc.) The association relationship (also can be referred to as corresponding relationship etc.) of scrambling ID, the embodiment of this application also provides following method:

In method 1, each CSI-RS resource and indication information of multiple scrambling IDs corresponding to the CSI-RS resource are included in the same information element. For example, the configuration information includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource corresponds to multiple first scrambling IDs, and the second CSI-RS resource corresponds to multiple second scrambling IDs ID. Then the indication information of the first CSI-RS resource and the plurality of first scrambling IDs may be included in the same information element, and the indication information of the second CSI-RS resource and the plurality of second scrambling IDs may include in another cell.

By including each CSI-RS resource and multiple scrambling IDs corresponding to each CSI-RS resource in the same information element, the relevant equipment can be made to know the correspondence between the CSI-RS resource and the scrambling ID (or referred to as associations).

Method 2. The configuration information includes information of each CSI-RS resource among the multiple CSI-RS resources, indication information of multiple first scrambling IDs, and indication information of multiple second scrambling IDs. In addition, the information of each CSI-RS resource includes indices of multiple first scrambling IDs or indices of multiple second scrambling IDs. For example, multiple scrambling IDs corresponding to one CSI-RS resource may correspond to one index, thus, the information of each CSI-RS resource among the at least two CSI-RS resources included in the configuration information may include an index , the index corresponds to multiple scrambling IDs. For example, the index of multiple first scrambling IDs corresponding to the first CSI-RS resource is index 1, and the index of multiple second scrambling IDs corresponding to the second CSI-RS resource is index 2, then the first CSI-RS The resource information may include index 1, and the second CSI-RS resource information may include index 2. Optionally, the above indication information may include an identifier for indicating the CSI-RS resource.

Method 3. The configuration information includes information of each CSI-RS resource among the multiple CSI-RS resources, indication information of multiple first scrambling IDs, and indication information of multiple second scrambling IDs. Optionally, the order of the indication information may be determined according to the order of the CSI-RS resources. For example, the configuration information includes the information of the first CSI-RS resource and the information of the second CSI-RS resource in sequence, and the indication information may include multiple first scrambling IDs and multiple second scrambling IDs in sequence. Optionally, the number of the first scrambling IDs is equal to the number of the second scrambling IDs.

It can be understood that how to indicate the correspondence between the CSI-RS resource and the scrambling ID is not limited in this embodiment of the present application.

It can be understood that the first CSI-RS resource and the second CSI-RS resource shown above are only examples, and for example, the configuration information may also include information about the third CSI-RS resource and the like. For example, the number of CSI-RS resources included in the configuration information may be determined according to the size of the coordinated TRP set of the UE, which is not limited in this embodiment of the present application. Taking FIG. 3 as an example, if the coordinated TRPs of the UE are TRP1, TRP3 and TRP4, three CSI-RS resources may be configured for the UE. That is to say, the CSI-RS resources required by the UE can be determined according to the size of the coordinated TRP set of the UE. In the method shown above, the second CSI-RS resource can be directly included in the configuration information, so that the second CSI-RS resource can be clearly indicated, and the CSI-RS resource can be flexibly controlled.

It can be understood that the above is illustrated by taking configuration information including information of each CSI-RS resource among multiple CSI-RS resources and multiple scrambling IDs corresponding to each CSI-RS resource as an example. However, the configuration information also includes information including the first CSI-RS resource, indication information of a plurality of first scrambling IDs, and indication information of a plurality of second scrambling IDs, the first CSI-RS resource corresponds to a plurality of A scrambled ID.

602. The network device sends configuration information. Correspondingly, the terminal device receives the configuration information.

Optionally, the configuration information sent by the network device may include information about the first CSI-RS resource, indication information of multiple first scrambling IDs, and indication information of multiple second scrambling IDs. Alternatively, the network device may send information about one CSI-RS resource, indication information of multiple first scrambling IDs, indication information of multiple second scrambling IDs, indication information of multiple third scrambling IDs, and the like.

Optionally, the network device may simultaneously send information about each CSI-RS resource among the multiple CSI-RS resources, and multiple scrambling IDs corresponding to each CSI-RS resource. For example, the network device may simultaneously send the information of the first CSI-RS resource, the information of the second CSI-RS resource, the indication information of multiple first scrambling IDs corresponding to the first CSI-RS resource, and the information related to the second CSI-RS resource. Indication information of multiple second scrambling IDs corresponding to the RS resource, and the like. Alternatively, the network device may also separately send the information of each CSI-RS resource among the multiple CSI-RS resources, and the indication information of multiple scrambling IDs corresponding to each CSI-RS resource. This embodiment of the present application does not limit it. When the network device sends the CSI-RS resource information and indication information separately, optionally, the information of each CSI-RS resource includes indexes of multiple scrambling IDs corresponding to it; or, the indication information includes corresponding The identifier of the CSI-RS resource.

For the specific description of step 601 and step 602, reference may be made to the above, and details are not repeated here.

In a possible implementation manner, the method shown in FIG. 6 further includes step 603 .

603. The terminal device acquires the second CSI-RS resource. And each TRP in the coordinated TRP set of the terminal device may also determine the second CSI-RS resource.

The method for obtaining the second CSI-RS resource may be as follows:

Optionally, the terminal device may acquire the second CSI-RS resource according to the configuration information. For example, the configuration information includes information about the first CSI-RS resource, information about the second CSI-RS resource, indication information of multiple first scrambling IDs, and indication information of multiple second scrambling IDs. Then the terminal device can directly obtain the first CSI-RS resource and the second CSI-RS resource according to the configuration information.

Optionally, the configuration information may not include the second CSI-RS resource, and the second CSI-RS resource may be determined according to the first CSI-RS resource and a pattern; or, according to the first CSI-RS resource and scrambling The number of IDs (such as the first scrambling ID or the second scrambling ID, etc.) is determined. For example, the configuration information includes information of the first CSI-RS resource, indication information of multiple first scrambling IDs, and indication information of multiple second scrambling IDs. Then the terminal device can determine the second CSI-RS resource according to the first CSI-RS resource and the pattern. In this case, for example, the correspondence between CSI-RS resources and scrambling IDs may be determined according to the sequence of indication information included in the configuration information. For example, the configuration information includes the first CSI-RS resource, indication information of multiple first scrambling IDs, and indication information of multiple second scrambling IDs. If the second CSI-RS resource determined by the terminal device is the repetition of the first CSI-RS resource on the time domain resource, then the indication information of multiple first scrambling IDs and the multiple second scrambling IDs included in the configuration information may be The ID indication information sequentially determines that the multiple scrambling IDs corresponding to the first CSI-RS resource are multiple first scrambling IDs, and the multiple scrambling IDs corresponding to the second CSI-RS resource are multiple second scrambling IDs.

It can be understood that the above is only an example, and the embodiment of the present application does not limit the specific implementation of step 603.

604. The UE respectively receives multiple CSI-RSs according to multiple CSI-RS resources and multiple scrambling IDs, where each CSI-RS resource in the multiple CSI-RS resources corresponds to multiple CSI-RSs, and the multiple CSI-RS resources - Each CSI-RS resource in the RS resources corresponds to multiple scrambling IDs, and different CSI-RS resources correspond to different multiple scrambling IDs. For example, the UE receives multiple first CSI-RSs from multiple TRPs according to the first CSI-RS resources and multiple first scrambling IDs, and receives multiple first CSI-RSs from multiple TRPs according to the second CSI-RS resources and multiple second scrambling IDs. Multiple second CSI-RSs for multiple TRPs. Wherein, one first scrambling ID corresponds to one first CSI-RS, and one second scrambling ID corresponds to one second CSI-RS.

Exemplarily, if the cooperative TRPs of the UE are TRP1, TRP2, and TRP3, the UE may receive the CSI-RS1_1 belonging to the first CSI-RS sent by TRP1, the CSI-RS1_2 belonging to the first CSI-RS sent by TRP2, and the CSI-RS1_2 sent by TRP2 and sent by TRP3. CSI-RS1_3 belonging to the first CSI-RS. And, the UE may also respectively receive CSI-RS2_1 belonging to the second CSI-RS sent by TRP1, CSI-RS2_2 belonging to the second CSI-RS sent by TRP2, and CSI-RS2_3 belonging to the second CSI-RS sent by TRP3. For example, the multiple first scramble IDs are respectively scramble ID1, scramble ID2 and scramble ID3, and the multiple second scramble IDs are respectively scramble ID4, scramble ID5 and scramble ID6. Then the UE can receive CSI-RS1_1 from TRP1 according to the first CSI-RS resource and scrambling ID1, receive CSI-RS1_2 from TRP2 according to the first CSI-RS resource and scrambling ID2, and receive CSI-RS1_2 from TRP2 according to the first CSI-RS resource and Scrambling ID3 receives CSI-RS1_3 from TRP3. Moreover, the UE may also receive CSI-RS2_1 from TRP1 according to the second CSI-RS resource and scrambling ID4, receive CSI-RS2_2 from TRP2 according to the second CSI-RS resource and scrambling ID5, and receive CSI-RS2_2 from TRP2 according to the second CSI-RS resource Resource and Scrambling ID6 receives CSI-RS2_3 from TRP3.

It can be understood that the above only exemplarily shows the second CSI-RS resource, and this embodiment of the present application may further include a third CSI-RS resource and the like. Thus, the terminal device can also obtain the third CSI-RS resource. The third CSI-RS resource corresponds to multiple third scrambling IDs. Exemplarily, the information of the third CSI-RS resource may be included in the configuration information, or the third CSI-RS resource may be determined according to the first CSI-RS resource and the pattern, or the third CSI-RS resource It may be determined according to the second CSI-RS resource and the pattern. For example, the terminal device may receive multiple third CSI-RSs from multiple TRPs according to the third CSI-RS resource and multiple third scrambling IDs. For example, if the number of TRPs in the coordinated TRP set of the UE is 3, then for the same TRP, the UE can respectively receive the first CSI-RS, The second CSI-RS sent on the second CSI-RS resource and the third CSI-RS sent on the third CSI-RS resource. At the same time, the pilot sequence of the first CSI-RS is generated according to the first scrambling ID of the same TRP, the pilot sequence of the second CSI-RS is generated according to the second scrambling ID of the same TRP, and the third The pilot sequence of the CSI-RS is generated according to the third scrambling ID of the same TRP.

In a possible implementation, the method shown in Figure 6 further includes:

605. The UE performs channel estimation according to multiple CSI-RSs corresponding to multiple CSI-RS resources. For example, the UE performs channel estimation according to multiple first CSI-RSs and multiple second CSI-RSs. For another example, the UE performs channel estimation according to multiple first CSI-RSs, multiple second CSI-RSs, and multiple third CSI-RSs.

606. The UE reports the measurement result of channel estimation.

In a possible implementation, the method shown in Figure 6 further includes:

It can be understood that the capability information shown in the embodiment of the present application is not shown in FIG. 6 , but it should not be construed as a limitation to the embodiment of the present application.

It can be understood that the method provided by the embodiment of the present application can be applied to a UE, that is, different TRPs in the cooperative TRP set of a UE use the same time-frequency resource to transmit the first CSI generated according to their respective first scrambling IDs -RS. Alternatively, it can also be applied to multiple UEs. Exemplarily, when the method provided by the embodiment of the present application is applied to multiple UEs, if the coordinated TRP sets of two UEs among the multiple UEs are the same, in this case, the coordinated TRP sets of the two UEs are in the same The scheduling units may both use the same first CSI-RS resource to send the first CSI-RS generated according to their corresponding first scrambling IDs. Optionally, the coordinated TRP sets of the two UEs may both use the same second CSI-RS resource in the same scheduling unit to send the second CSI-RS generated according to the respective second scrambling IDs. Optionally, the coordinated TRP sets of the two UEs may both use the same third CSI-RS resource in the same scheduling unit to send the third CSI-RS generated according to the respective corresponding third scrambling IDs. It can be understood that, for specific descriptions about the second CSI-RS resource and the third CSI-RS resource, reference may be made to the above, and details are not described here again.

For example, the cooperative TRP sets of the two UEs (such as UE1 and UE2) are all TRP1, TRP2, and TRP3, then TPR1 can send UE1 and UE2 the first CSI-RS resource according to the first scrambling ID (ie, TRP1 Corresponding scrambling ID1, and scrambling ID1 belongs to the first CSI-RS generated by the first scrambling ID) (such as CSI-RS1, and CSI-RS1 belongs to the first CSI-RS); TPR2 can be in the first CSI-RS Send the first CSI-RS generated according to the first scrambling ID (that is, the scrambling ID2 corresponding to TRP2, and the scrambling ID2 belongs to the first scrambling ID) to UE1 and UE2 on resources RS2 belongs to the first CSI-RS); TPR3 can send to UE1 and UE2 on the first CSI-RS resource respectively according to the first scrambling ID (that is, the scrambling ID3 corresponding to TRP3, and the scrambling ID3 belongs to the first scrambling ID ) generated by the first CSI-RS (such as CSI-RS3, and CSI-RS3 belongs to the first CSI-RS). Optionally, TPR1 may send the second scrambling ID generated according to the second scrambling ID (that is, the scrambling ID4 corresponding to TRP1, and the scrambling ID4 belongs to the second scrambling ID) to UE1 and UE2 respectively on the second CSI-RS resource. CSI-RS (such as CSI-RS4, and CSI-RS4 belongs to the second CSI-RS); TPR2 can send UE1 and UE2 respectively the scrambling according to the second scrambling ID (that is, the scrambling corresponding to TRP2) on the second CSI-RS resource. ID5, and the scrambling ID5 belongs to the second CSI-RS (such as CSI-RS5, and the CSI-RS5 belongs to the second CSI-RS) generated by the second scrambling ID); UE1 and UE2 send the second CSI-RS generated according to the second scrambling ID (that is, the scrambling ID6 corresponding to TRP3, and the scrambling ID6 belongs to the first scrambling ID) CSI-RS). It can be understood that for descriptions about multiple UEs, reference may also be made to FIG. 4 .

It can be understood that for the method shown in FIG. 6 , reference may be made to FIG. 5 a or FIG. 4 , and details are not described in this embodiment of the present application.

In the embodiment of the present application, by including information of at least two CSI-RS resources in the configuration information, each CSI-RS resource corresponds to multiple different scrambling IDs. Thus, the TRPs in the coordinated TRP set of the UE repeatedly send the CSI-RS, such as the TRP sends the first CSI-RS, the second CSI-RS, etc. The RS is sent to the UE through the same channel, and the pilot sequence of the first CSI-RS and the pilot sequence of the second CSI-RS are generated by different scrambling IDs. Therefore, since the pilot sequences generated according to different scrambling IDs have large differences, the probability of demodulation errors of the terminal equipment can be further reduced, the demodulation performance of the terminal equipment can be improved, and the channel estimation performance can be improved.

It can be understood that the method shown in this application can be applied not only to a single-port CSI-RS, but also to a multi-port CSI-RS. It can be understood that the single-port CSI-RS means that after the pilot sequence of the CSI-RS is generated, it is sent through one port of one TRP. The multi-port CSI-RS means that after the pilot sequence of the CSI-RS is generated, it is sent through multiple ports of one TRP. In the method shown in the embodiment of the present application, multiple ports of the same TRP may all use the same time-frequency resource to send CSI-RS. For example, the cooperative TRP set of the UE includes TRP1, TRP2, and TRP3, then TRP1 can use the first scrambling ID on the first CSI-RS resource (that is, the scrambling ID1 corresponding to TRP1, and the scrambling ID1 belongs to the first scrambling ID1). scrambling ID) through multiple ports to send the first CSI-RS (such as CSI-RS1, and CSI-RS1 belongs to the first CSI-RS), TRP2 can be based on the first CSI-RS resource according to the first scrambling ID (ie TRP2 The corresponding scrambling ID2, and the scrambling ID2 belongs to the first scrambling ID) transmits the first CSI-RS (that is, CSI-RS2, and the CSI-RS2 belongs to the first CSI-RS) through multiple ports, and the TRP3 can be in the first On the CSI-RS resource, the first CSI-RS (that is, CSI-RS3, and the CSI- RS3 belongs to the first CSI-RS). It can be understood that for the specific description of the repeated transmission of the multi-port CSI-RS, reference may be made to FIG. 5a and FIG. 6 , which will not be described in detail here.

The communication device provided by the embodiment of the present application will be introduced below.

The present application divides the communication device into functional modules according to the above method embodiments. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in this application is schematic, and is only a logical function division, and there may be other division methods in actual implementation. The communication device according to the embodiment of the present application will be described in detail below with reference to FIG. 7 to FIG. 9 .

FIG. 7 is a schematic structural diagram of a communication device provided by an embodiment of the present application. As shown in FIG. 7 , the communication device includes a processing unit 701 and a transceiver unit 702 .

In some embodiments of the present application, the communication device may be the terminal device or a chip in the terminal device shown above. That is, the communication device may be used to perform the steps or functions performed by the terminal device in the above method embodiments.

Exemplarily, the transceiver unit 702 is configured to receive CSI-RS configuration information, where the configuration information includes information about a first CSI-RS resource, and the first CSI-RS resource corresponds to a plurality of first scrambling identification IDs;

The transceiver unit 702 is further configured to receive multiple first CSI-RSs from multiple TRPs according to the first CSI-RS resources and multiple first scrambling IDs, one first scrambling ID is used for one TRP to generate one first CSI-RS.

In a possible implementation manner, the processing unit 701 is configured to perform channel estimation according to multiple first CSI-RSs.

In this embodiment of the present application, the processing unit 701 may input multiple first CSI-RSs through the transceiver unit 702 according to the first CSI-RS resource and multiple first scrambling IDs, and then according to the multiple first CSI-RS Do channel estimation. The embodiment of the present application does not limit specific manners of the transceiver unit and the processing unit.

In a possible implementation manner, the processing unit 701 is further configured to acquire a second CSI-RS resource; the transceiving unit 702 is further configured to receive information from multiple Multiple second CSI-RSs of one TRP, one first scrambling ID is used for one TRP to generate one second CSI-RS.

In a possible implementation manner, the configuration information further includes indication information of multiple second scrambling IDs, the multiple second scrambling IDs correspond to the second CSI-RS resources, and the processing unit 701 is further configured to acquire the second CSI-RS resources; the transceiver unit 702 is further configured to receive multiple second CSI-RSs from multiple TRPs according to the second CSI-RS resources and multiple second scrambling IDs, and one second scrambling ID is used for One TRP generates one second CSI-RS.

In a possible implementation manner, the processing unit 701 is specifically configured to perform channel estimation according to multiple first CSI-RSs and multiple second CSI-RSs.

In a possible implementation, the transceiver unit 702 is further configured to send capability information to the network device, where the capability information is used to indicate any one or more of the following: the number of supported scrambling IDs, the supported pattern type, Or the duration of channel estimation.

In this embodiment of the application, the descriptions about the configuration information, the first scrambling ID, the first CSI-RS resource, the second CSI-RS resource, the second scrambling ID, etc. can also refer to the above method embodiment (including Figure 4 , Fig. 5a and Fig. 6), the introduction in Fig. 5a and Fig. 6) will not be described in detail here. It can be understood that the specific descriptions of the transceiver unit and the processing unit shown in the embodiments of the present application are only examples. For the specific functions or steps performed by the transceiver unit and the processing unit, reference can be made to the above method embodiments, and no further details are given here.

Reusing FIG. 7 , in other embodiments of the present application, the communication device may be the network device or a chip in the network device shown above. That is, the communication device may be used to execute the steps or functions executed by the network device in the above method embodiments. Exemplarily, the network device may include a base station for controlling the coordinated TRP set, or a control node in the coordinated TRP set. For ease of understanding, the embodiments of the present application will be described below by taking the network device as a control node, that is, a TRP in the coordinated TRP set of the UE as an example.

The processing unit 701 is configured to determine configuration information, where the configuration information includes information about a first CSI-RS resource, where the first CSI-RS resource corresponds to a plurality of first scrambling identifier IDs;

The transceiver unit 702 is configured to send configuration information.

In a possible implementation manner, the transceiving unit 702 is further configured to send the first CSI-RS according to the first CSI-RS resource and the first scrambling ID.

In a possible implementation manner, the processing unit 701 is further configured to determine the second CSI-RS resource; the transceiver unit 702 is further configured to send the second CSI-RS resource according to the second CSI-RS resource and the first scrambling ID. RS; or, the transceiving unit 702 is further configured to send a second CSI-RS according to the second CSI-RS resource and a second scrambling ID, where the second scrambling ID is included in the configuration information.

In a possible implementation manner, the processing unit 701 is specifically configured to determine the second CSI-RS resource according to the first CSI-RS resource and the pattern.

In a possible implementation, the transceiver unit 702 is further configured to receive capability information from the terminal device, where the capability information is used to indicate any one or more of the following: the number of supported scrambling IDs, the supported pattern type , or the duration of channel estimation.

Exemplarily, the processing unit 701 provided in the embodiment of the present application may further include a pilot processing component and a data processing component. For example, when the communication device is a terminal device, the terminal device may process the first CSI-RS or the second CSI-RS through the pilot processing component, and perform channel estimation through the data processing component.

The above describes the network device and the terminal device in the embodiment of the present application, and the following describes possible product forms of the network device and the terminal device. It should be understood that any product in any form that has the functions of the network device described above in Figure 7, or any product in any form that has the functions of the terminal device described in Figure 7 above, falls under the protection of the embodiments of this application scope. It should also be understood that the following introduction is only an example, and product forms of the network device and the terminal device in the embodiments of the present application are not limited thereto.

In a possible implementation, in the communication device shown in FIG. 7 , the processing unit 701 may be one or more processors, the transceiver unit 702 may be a transceiver, or the transceiver unit 702 may also be a sending unit and a receiving unit , the sending unit may be a transmitter, and the receiving unit may be a receiver, and the sending unit and the receiving unit are integrated into one device, such as a transceiver. In the embodiment of the present application, the processor and the transceiver may be coupled, and the connection manner of the processor and the transceiver is not limited in the embodiment of the present application.

As shown in FIG. 8 , the communication device 80 includes one or more processors 820 and a transceiver 810 .

Exemplarily, when the communication device is used to perform the steps or methods or functions performed by the above-mentioned terminal equipment, the transceiver 810 is used to receive configuration information, a plurality of first CSI-RSs (or also used to receive a plurality of second CSI-RS, etc.); a processor 820, configured to perform channel estimation and the like according to multiple first CSI-RSs.

Exemplarily, when the communication device is used to perform the steps or methods or functions performed by the above-mentioned network equipment (such as a control node or a base station, etc.), the processor 820 is used to determine configuration information; the transceiver 810 is used to send the configuration information information (or also used to send the first CSI-RS or the second CSI-RS, etc.).

In this embodiment of the application, the descriptions about the configuration information, the first scrambling ID, the first CSI-RS resource, the second CSI-RS resource, the second scrambling ID, etc. can also refer to the above method embodiment (including Figure 4 , Fig. 5a and Fig. 6), the introduction in Fig. 5a and Fig. 6) will not be described in detail here. It can be understood that for the specific description of the processor and the transceiver, reference may also be made to the introduction of the processing unit and the transceiver unit shown in FIG. 7 , which will not be repeated here.

In various implementations of the communication device shown in FIG. 8 , the transceiver may include a receiver and a transmitter, the receiver is used to perform the function (or operation) of receiving, and the transmitter is used to perform the function (or operation) of transmitting ). And the transceiver is used to communicate with other devices/devices through the transmission medium.

Optionally, the communication device 80 may further include one or more memories 830 for storing program instructions and/or data. The memory 830 is coupled to the processor 820 . The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. Processor 820 may cooperate with memory 830 . The processor 820 may execute program instructions stored in the memory 830 . Optionally, at least one of the above one or more memories may be included in the processor.

In this embodiment of the present application, a specific connection medium among the transceiver 810, the processor 820, and the memory 830 is not limited. In the embodiment of the present application, in FIG. 8, the memory 830, the processor 820, and the transceiver 810 are connected through a bus 840. The bus is represented by a thick line in FIG. 8, and the connection mode between other components is only for schematic illustration. , is not limited. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 8 , but it does not mean that there is only one bus or one type of bus.

In the embodiment of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., and may realize Or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

In the embodiment of the present application, the memory may include but not limited to hard disk drive (hard disk drive, HDD) or solid-state drive (solid-state drive, SSD) and other non-volatile memory, random access memory (Random Access Memory, RAM), Erasable Programmable ROM (EPROM), Read-Only Memory (ROM) or Portable Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM), etc. The memory is any storage medium that can be used to carry or store program codes in the form of instructions or data structures, and can be read and/or written by a computer (such as the communication device shown in this application, etc.), but is not limited thereto. The memory in the embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, and is used for storing program instructions and/or data.

Exemplarily, for example, the processor 820 is mainly used to process communication protocols and communication data, control the entire communication device, execute software programs, and process data of the software programs. The memory 830 is mainly used to store software programs and data. The transceiver 810 may include a control circuit and an antenna, and the control circuit is mainly used for converting a baseband signal to a radio frequency signal and processing the radio frequency signal. Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users.

When the communication device is turned on, the processor 820 can read the software program in the memory 830, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 820 performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit. When data is sent to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 820, and the processor 820 converts the baseband signal into data and processes the data deal with.

In another implementation, the radio frequency circuit and the antenna can be set independently from the processor for baseband processing. For example, in a distributed scenario, the radio frequency circuit and antenna can be arranged remotely from the communication device. .

It can be understood that the communication device shown in the embodiment of the present application may have more components than those shown in FIG. 8 , which is not limited in the embodiment of the present application. The method performed by the processor and the transceiver shown above is only an example, and for the specific steps performed by the processor and the transceiver, reference may be made to the method introduced above.

In another possible implementation, in the communication device shown in FIG. 7 , the processing unit 701 may be one or more logic circuits, and the transceiver unit 702 may be an input-output interface, or a communication interface, or an interface circuit , or interfaces and so on. Or the transceiver unit 702 may also be a sending unit and a receiving unit, the sending unit may be an output interface, and the receiving unit may be an input interface, and the sending unit and the receiving unit are integrated into one unit, such as an input and output interface. As shown in FIG. 9 , the communication device shown in FIG. 9 includes a logic circuit 901 and an interface 902 . That is, the above-mentioned processing unit 701 can be realized by a logic circuit 901 , and the transceiver unit 702 can be realized by an interface 902 . Wherein, the logic circuit 901 may be a chip, a processing circuit, an integrated circuit or a system on chip (SoC) chip, etc., and the interface 902 may be a communication interface, an input/output interface, or a pin. Exemplarily, FIG. 9 takes the aforementioned communication device as a chip as an example, and the chip includes a logic circuit 901 and an interface 902 .

In the embodiment of the present application, the logic circuit and the interface may also be coupled to each other. The embodiment of the present application does not limit the specific connection manner of the logic circuit and the interface.

Exemplarily, when the communication device is used to execute the method or function or steps performed by the above-mentioned terminal equipment, the interface 902 is used to input configuration information and multiple first CSI-RS; the logic circuit 901 is used to input the configuration information according to the multiple first CSI-RSs; A CSI-RS performs channel estimation.

Exemplarily, when the communication device is used to execute the method or function or steps performed by the above network equipment, the logic circuit 901 is used to determine the configuration information; the interface 902 is used to output the configuration information (or also used to output the first CSI -RS or second CSI-RS, etc.).

It can be understood that the communication device shown in the embodiment of the present application may implement the method provided in the embodiment of the present application in the form of hardware, or may implement the method provided in the embodiment of the present application in the form of software, which is not limited in the embodiment of the present application.

In this embodiment of the application, the descriptions about the configuration information, the first scrambling ID, the first CSI-RS resource, the second CSI-RS resource, the second scrambling ID, etc. can also refer to the above method embodiment (including Figure 4 , Fig. 5a and Fig. 6), the introduction in Fig. 5a and Fig. 6) will not be described in detail here.

The embodiment of the present application also provides a wireless communication system, the wireless communication system includes a network device and a terminal device, the network device and the terminal device can be used to implement any of the foregoing embodiments (including Figure 4, Figure 5a and Figure 6 ) method.

In addition, the present application also provides a computer-readable storage medium, the computer-readable storage medium stores computer codes, and when the computer codes run on the computer, the computer executes the operations performed by the network device in the method provided in the present application and/or processing.

The present application also provides a computer-readable storage medium, where computer code is stored in the computer-readable storage medium, and when the computer code is run on the computer, the computer is made to perform the operations performed by the terminal device in the method provided by the present application and/or or process.

The present application also provides a computer program product, the computer program product includes computer code or computer program, when the computer code or computer program is run on the computer, the operation performed by the network device in the method provided by the present application and/or Processing is performed.

The present application also provides a computer program product, the computer program product includes computer code or computer program, when the computer code or computer program is run on the computer, the operation performed by the terminal device in the method provided by the present application and/or Processing is performed.

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

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to realize the technical effects of the solutions provided by the embodiments of the present application.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application is essentially or part of the contribution to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a readable The storage medium includes several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned readable storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (random access memory, RAM), magnetic disk or optical disk, etc., which can store program codes. medium.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application.

Claims

A resource allocation method, characterized in that the method comprises:

Receive channel state information reference signal CSI-RS configuration information, where the configuration information includes information about a first CSI-RS resource, and the first CSI-RS resource corresponds to a plurality of first scrambling identifier IDs;

Receive multiple first CSI-RSs from multiple transmission reception points TRP according to the first CSI-RS resource and the multiple first scrambling IDs, one of the first scrambling IDs is used for one of the TRPs Generate one of the first CSI-RS.
The method according to claim 1, further comprising:

Perform channel estimation according to the multiple first CSI-RSs.
The method according to claim 1 or 2, characterized in that the method further comprises:

acquiring a second CSI-RS resource;

Receive a plurality of second CSI-RSs from the plurality of TRPs according to the second CSI-RS resource and the plurality of first scrambling IDs, one of the first scrambling IDs is used to generate one of the TRPs One of the second CSI-RS.
The method according to claim 1 or 2, wherein the configuration information further includes indication information of multiple second scrambling IDs, and the multiple second scrambling IDs correspond to the second CSI-RS resources, so The method also includes:

acquiring a second CSI-RS resource;

Receive a plurality of second CSI-RSs from the plurality of TRPs according to the second CSI-RS resources and the plurality of second scrambling IDs, one of the second scrambling IDs is used for generation of one of the TRPs One of the second CSI-RS.
The method according to claim 3 or 4, wherein the second CSI-RS resource is determined according to the first CSI-RS resource and a pattern.
The method according to claim 3 or 4, wherein the configuration information further includes information of the second CSI-RS resource.
The method according to any one of claims 2-6, wherein the performing channel estimation according to the plurality of first CSI-RSs comprises:

Perform channel estimation according to the multiple first CSI-RSs and the multiple second CSI-RSs.
The method according to any one of claims 1-7, wherein the method further comprises:

Send capability information to the network device, where the capability information is used to indicate any one or more of the following: the number of supported first scrambling IDs, the supported pattern type, or the duration of channel estimation.
A resource allocation method, characterized in that the method comprises:

Determine configuration information, where the configuration information includes information about a first channel state information reference signal CSI-RS resource, where the first CSI-RS resource corresponds to a plurality of first scrambling identifier IDs;

Send the configuration information.
The method according to claim 9, characterized in that the method further comprises:

Sending a first CSI-RS according to the first CSI-RS resource and the first scrambling ID.
The method according to claim 10, characterized in that the method further comprises:

determining a second CSI-RS resource;

Sending a second CSI-RS according to the second CSI-RS resource and the first scrambling ID; or,

Sending a second CSI-RS according to the second CSI-RS resource and a second scrambling ID, where the second scrambling ID is included in the configuration information.
The method according to claim 11, wherein said determining the second CSI-RS resource comprises:

Determine the second CSI-RS resource according to the first CSI-RS resource and the pattern.
The method according to claim 11, wherein the configuration information further includes information about the second CSI-RS resource.
The method according to any one of claims 9-13, wherein the method further comprises:

Receive capability information from the terminal device, where the capability information is used to indicate any one or more of the following: the number of supported first scrambling IDs, the supported pattern type, or the duration of channel estimation.
A communication device, characterized in that the device includes:

A transceiver unit, configured to receive configuration information of a channel state information reference signal CSI-RS, where the configuration information includes information about a first CSI-RS resource, and the first CSI-RS resource corresponds to a plurality of first scrambling identifier IDs;

The transceiver unit is further configured to receive multiple first CSI-RSs from multiple transmission reception points TRP according to the first CSI-RS resources and the multiple first scrambling IDs, one of the first scrambling IDs The scrambling ID is used for one TRP to generate one first CSI-RS.
The device according to claim 15, further comprising:

A processing unit, configured to perform channel estimation according to the plurality of first CSI-RSs.
The device according to claim 15 or 16, wherein the device further comprises:

a processing unit, configured to obtain a second CSI-RS resource;

The transceiver unit is further configured to receive a plurality of second CSI-RSs from the plurality of TRPs according to the second CSI-RS resource and the plurality of first scrambling IDs, one of the first scrambling IDs The ID is used for one TRP to generate one second CSI-RS.
The device according to claim 15 or 16, wherein the configuration information further includes indication information of multiple second scrambling IDs, and the multiple second scrambling IDs correspond to the second CSI-RS resource, so Said device also includes:

a processing unit, configured to acquire the second CSI-RS resource;

The transceiver unit is further configured to receive a plurality of second CSI-RSs from the plurality of TRPs according to the second CSI-RS resources and the plurality of second scrambling IDs, one of the second scrambling The ID is used for one TRP to generate one second CSI-RS.
The apparatus according to claim 17 or 18, wherein the second CSI-RS resource is determined according to the first CSI-RS resource and a pattern.
The apparatus according to claim 17 or 18, wherein the configuration information further includes information about the second CSI-RS resource.
The device according to any one of claims 15-20, characterized in that,

The processing unit is specifically configured to perform channel estimation according to the multiple first CSI-RSs and the multiple second CSI-RSs.
The device according to any one of claims 15-21, characterized in that,

The transceiver unit is further configured to send capability information to the network device, where the capability information is used to indicate any one or more of the following: the number of supported first scrambling IDs, supported pattern types, or channel Estimated duration.
A communication device, characterized in that the device includes:

A processing unit, configured to determine configuration information, where the configuration information includes information about a first channel state information reference signal CSI-RS resource, where the first CSI-RS resource corresponds to a plurality of first scrambling identifier IDs;

A transceiver unit, configured to send the configuration information.
The device according to claim 23, characterized in that,

The transceiving unit is further configured to send a first CSI-RS according to the first CSI-RS resource and the first scrambling ID.
Apparatus according to claim 23 or 24, characterized in that

The processing unit is further configured to determine a second CSI-RS resource;

The transceiver unit is further configured to send a second CSI-RS according to the second CSI-RS resource and the first scrambling ID; or,

The transceiving unit is further configured to send a second CSI-RS according to the second CSI-RS resource and a second scrambling ID, and the second scrambling ID is included in the configuration information.
The device according to claim 25, wherein the processing unit is specifically configured to determine the second CSI-RS resource according to the first CSI-RS resource and the pattern.
The device according to claim 25, wherein the configuration information further includes information about the second CSI-RS resource.
The device according to any one of claims 23-27, characterized in that,

The transceiver unit is further configured to receive capability information from the terminal device, where the capability information is used to indicate any one or more of the following: the number of supported scrambling IDs, the supported pattern type, or the duration of channel estimation .
A communication device, characterized in that it includes a processor and a memory;

the processor is configured to store computer-executable instructions;

The processor is configured to execute the computer-executed instructions, so that the method described in any one of claims 1-8 is performed; or, to cause the method described in any one of claims 9-14 to be performed.
A communication device, characterized by comprising: a processor coupled to a memory;

The processor is configured to execute the computer program stored in the memory, so that the method according to any one of claims 1-8 is executed; or, to make the method according to any one of claims 9-14 be executed.
A communication device, characterized in that it includes a logic circuit and an interface, and the logic circuit and the interface are coupled;

The interface is used to input and/or output code instructions, and the logic circuit is used to execute the code instructions, so that the method described in any one of claims 1-8 is executed; or, to make claim 9- The method described in any one of 14 is carried out.
A computer-readable storage medium, characterized in that the computer-readable storage medium is used to store a computer program, and when the computer program is executed, the method according to any one of claims 1-8 is executed; or , the method described in any one of claims 9-14 is carried out.
A communication system, characterized in that the communication system includes a terminal device and a network device, the terminal device is used to perform the method according to any one of claims 1-8, and the network device is used to perform the method described in the claim The method described in any one of claims 9-14.
A computer program product, characterized in that it includes computer program code, and when the computer program code is run on a computer, the method according to any one of claims 1-8 or 9-14 can be realized.