CN115733589A

CN115733589A - Resource allocation method and device

Info

Publication number: CN115733589A
Application number: CN202110998527.8A
Authority: CN
Inventors: 纪刘榴; 金黄平; 王潇涵
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2023-03-03
Also published as: WO2023024967A1

Abstract

The application discloses a resource allocation method and a device, wherein the method comprises the following steps: the network equipment sends configuration information to the terminal equipment, wherein the configuration information comprises information of a first CSI-RS resource, and the first CSI-RS resource corresponds to a plurality of first scrambling IDs. Correspondingly, the terminal equipment receives the configuration information. The terminal device then receives a plurality of first CSI-RS from the plurality of TRPs according to the first CSI-RS resource and a plurality of first scrambling IDs, one first scrambling ID is used for one TRP to generate one first CSI-RS. The method provided by the application can effectively improve the condition that the cost of the CSI-RS resource is increased along with the increase of the number of the cooperative TRP of the terminal equipment, and can effectively reduce the resource cost.

Description

Resource allocation method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a resource allocation method and apparatus.

Background

In a multi-antenna system, when a transmitting end transmits a signal, the energy distribution of the transmitted signal on the space can be changed as required by adjusting the weight (such as amplitude or phase) of the transmitted signal of each transmitting antenna. Further, the signal may be focused in some directions in space to form a beam. Such adjustment of the weights may be referred to as a process of spatial filtering, beamforming, or precoding (precoding will be described as an example hereinafter). The method can better enable the useful signal to be aligned to the target user, avoid the interference to other users caused by the leakage of signal energy and improve the signal-to-interference-and-noise ratio. Meanwhile, the above precoding may be determined based on different known states of the channel. That is, to achieve good precoding performance, channel State Information (CSI) is very important.

In a multi-station (also referred to as a multi-Transmission Reception Point (TRP)) transmission system, a terminal device may measure a CSI-RS according to a channel state information reference signal (CSI-RS) resource configured by a network device, so that the terminal device may obtain CSI from multiple TRPs to the terminal device according to the CSI-RS received from the multiple TRPs, thereby determining precoding. As shown in fig. 1, (1) in fig. 1 represents resources configured for a terminal device by a network device, and the resources may be used for transmitting signals (e.g., CSI-RS). Fig. 1 (2) shows a CSI-RS resource 1 configured for a TRP1 in the terminal device's cooperative TRP set, and fig. 1 (3) shows a CSI-RS resource 2 configured for a TRP2 in the terminal device's cooperative TRP set, where the CSI-RS resource 1 and the 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, so that the terminal device can measure CSI-RS transmitted on CSI-RS resource 1 and CSI-RS resource 2, respectively. According to the method shown in fig. 1, in order to avoid interference, different CSI-RS resources need to be allocated 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 linearly increases, thereby causing an excessive overhead of system resources.

Disclosure of Invention

The application provides a resource allocation method and device, which can effectively improve the condition that the cost of CSI-RS resources is increased along with the increase of the number of TRPs in a cooperation TRP set of terminal equipment, and effectively reduce the resource cost.

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

receiving configuration information of CSI-RS, wherein the configuration information comprises information of a first CSI-RS resource, and the first CSI-RS resource corresponds to a plurality of first scrambling Identifications (IDs); receiving a plurality of first CSI-RSs from a plurality of TRPs according to the first CSI-RS resource and the plurality of first scrambling IDs, one first scrambling ID for one TRP to generate one first CSI-RS.

Illustratively, the relationship between the scrambling ID and the CSI-RS may be implemented as follows: for example, the scrambling ID may be used to generate a pilot sequence, and the pilot sequence is mapped on a Resource Element (RE) allocated by the base station to the terminal device and then transmitted with a certain transmission power. The signal transmitted with a certain transmission power may be referred to as a pilot, such as a CSI-RS, for measuring channel information.

In the embodiment of the application, different TRPs in a cooperative TRP set of a terminal device may respectively send a first CSI-RS through the same CSI-RS resource (e.g., the same time-frequency resource), and for example, different TRPs of one terminal device may respectively send different first CSI-RS through the same time-frequency resource (i.e., different TRPs of one terminal device may multiplex the same time-frequency resource to send CSI-RS). Since different TRPs can use different first scrambling IDs respectively, thereby generating different pilot sequences (e.g. pseudo-orthogonality can be achieved between different pilot sequences), interference between different signals is effectively weakened. For example, each TRP in the cooperative TRP set of the terminal device may multiplex the same time-frequency resource, but different scrambling IDs are used to generate different pilot sequences, so that the pilot sequences are mapped on the same time-frequency resource and sent to the terminal device. Because each TRP in the cooperation TRP set can use the same time-frequency resource, the condition that the expenditure of the CSI-RS resource is increased along with the number of the cooperation TRPs in the cooperation TRP set of the terminal equipment is improved, and the expenditure of the CSI-RS resource is effectively reduced.

In one possible implementation, the method further includes: and performing channel estimation according to the plurality of first CSI-RSs.

In this embodiment, the terminal device may perform channel estimation through the plurality of first CSI-RSs, and obtain CSI from each of the plurality of TRPs to the terminal device, thereby determining precoding.

In one possible implementation, the method further includes: acquiring a second CSI-RS resource; receiving 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 for each of the TRPs generating one of the second CSI-RSs.

In the embodiment of the application, the TRP in the cooperation TRP set of the terminal equipment repeatedly sends the CSI-RS, for example, the TRP sends the first CSI-RS, the second CSI-RS and the like, that is, the first CSI-RS and the second CSI-RS sent by the same TRP are sent to the UE through the same channel, so that the probability of demodulation errors of the terminal equipment can be effectively reduced, the demodulation performance of the terminal equipment is improved, and the channel estimation performance is improved.

In one possible implementation manner, the configuration information further includes indication information of a plurality of second scrambling IDs, where the plurality of second scrambling IDs correspond to second CSI-RS resources, and the method further includes: acquiring the second CSI-RS resource; receiving a plurality of second CSI-RSs from the plurality of TRPs according to the second CSI-RS resource and the plurality of second scrambling IDs, one for each of the TRPs generating one of the second CSI-RSs.

In the embodiment of the application, the configuration information comprises information of at least two CSI-RS resources, and each CSI-RS resource corresponds to a plurality of different scrambling IDs. Therefore, the TRP in the cooperation TRP set of the terminal equipment repeatedly sends the CSI-RS, for example, the TRP sends the first CSI-RS, the second CSI-RS and the like, the first CSI-RS and the second CSI-RS sent by the same TRP are sent to the terminal equipment 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, the difference between the pilot sequences generated according to different scrambling IDs is large, the probability of demodulation errors of the terminal equipment can be further reduced, the demodulation performance of the terminal equipment is improved, and the channel estimation performance is improved.

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

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

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

Illustratively, different first scrambling ID numbers 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 a repetition of the first CSI-RS resource on the time domain resource. For another example, if the number of the first scrambling IDs is 3, the pattern of the second CSI-RS resource may be a repetition of the first CSI-RS resource on the frequency domain resource. For another example, the number of first scrambling IDs may be different, the second CSI-RS resources may all be repetitions of the first CSI-RS resources on time domain resources, but the larger the number of first scrambling IDs, the more corresponding time domain resources may be.

In one possible implementation, the configuration information further includes information of the second CSI-RS resource.

In one possible implementation, the second CSI-RS resource corresponds to the plurality of second scrambling IDs.

In one possible implementation, the performing channel estimation according to the plurality of first CSI-RSs comprises: and performing channel estimation according to the plurality of first CSI-RSs and the plurality of second CSI-RSs.

The second CSI-RS resource shown here is merely an example, and the configuration information may further include information of the third CSI-RS resource, etc.

In one possible implementation, the pilot sequence of the first CSI-RS is determined according to the first scrambling ID and a number of Resource Elements (REs) on one Orthogonal Frequency Division Multiplexing (OFDM) symbol.

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

In this embodiment, when the pilot sequence is generated according to the number of REs on the plurality of 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 the respective first scrambling IDs are long sequences, the pilot sequences generated between different TRPs can be made low-correlation, further improving the performance of channel estimation.

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

In one possible implementation, the method further includes: sending capability information to a network device, the capability information indicating any one or more of: the number of supported scrambling IDs (e.g., first scrambling ID), the type of supported patterns, or the duration of channel estimation.

In a second aspect, an embodiment of the present application provides a resource allocation method, where the method includes: determining configuration information, wherein the configuration information comprises information of a first channel state information reference signal (CSI-RS) resource, and the first CSI-RS resource corresponds to a plurality of first scrambling Identifiers (IDs); and sending the configuration information.

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

Illustratively, when the configuration information is determined by the base station, the base station may transmit the configuration information to one TRP in the cooperative TRP set of the terminal device, and then notify the other TRPs and the terminal device by the one TRP. Alternatively, the base station may send the configuration information to each TRP in a coordinated TRP set of the terminal device, and then one TRP in the coordinated TRP set sends the configuration information to the terminal device. Alternatively, the base station may transmit the configuration information to the terminal device, and transmit the configuration information to each TRP in the cooperative TPR set of the terminal device, and the like. Illustratively, when a control node in a set of cooperating TRPs by a terminal device, the control node may send configuration information to other TRPs and the terminal device.

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

In one possible implementation, the method further includes: determining a second CSI-RS resource; transmitting 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, wherein the second scrambling ID is contained in the configuration information.

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

In one possible implementation, 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 number of the first scrambling IDs.

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

In one possible implementation, the method further includes: receiving capability information from a terminal device, the capability information indicating any one or more of: the number of supported scrambling IDs, the type of supported patterns, or the duration of channel estimation.

As for the advantageous effects of the second aspect, reference may be made to the above-described first aspect, which will not be described in detail herein.

In a third aspect, an embodiment of the present application provides a communication apparatus, configured to perform the method in the first aspect or any possible implementation manner of the first aspect. The communication device comprises corresponding means to carry out the method of the first aspect or any possible implementation manner of the first aspect.

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

In a fourth aspect, embodiments of the present application provide a communication apparatus for performing the method in the second aspect or any possible implementation manner of the second aspect. The communication device comprises a corresponding method having the capability to perform the method of the second aspect or any possible implementation of the second aspect.

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

In the third aspect or the fourth aspect, the communication apparatus may include a transceiver unit and a processing unit. For a detailed description of the transceiving 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 apparatus, which includes a processor configured to execute the method shown in the first aspect or any possible implementation manner of the first aspect. Alternatively, the processor is configured to execute a program stored in the memory, and when the program is executed, the method according to the first aspect or any possible implementation manner of the first aspect is executed.

In the process of executing the method, the processes of transmitting information (or also including transmitting signals and the like) and receiving information (or also including receiving signals and the like) in the method can be understood as a process of outputting the information by a processor and a process of receiving the input information by the processor. Upon outputting the information, the processor outputs the information to the transceiver for transmission by the transceiver. This information may also require additional processing after being output by the processor before reaching the transceiver. Similarly, when the processor receives the input information, the transceiver receives the information and inputs the information into the processor. Optionally, after the transceiver receives the information, the information may need to be processed further before being input to the processor.

The operations relating to the processor, such as transmitting, sending and receiving, may be understood more generally as operations relating to the processor, such as outputting and receiving, inputting, etc., than those performed directly by the rf circuitry and antenna, unless specifically stated otherwise, or if not contradicted by their actual role or inherent logic in the associated description.

In implementation, the processor may be a processor dedicated to performing the methods, or may be a processor executing computer instructions in a memory to perform the methods, such as a general-purpose processor. The memory may be a non-transient (non-transient) memory, such as a read-only memory, which may be integrated on the same chip as the processor, or may be separately disposed on different chips. It is to be understood that the description of the processor and the memory is also applicable to the sixth aspect shown below, and is not detailed to avoid redundancy of the sixth aspect.

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

In one possible implementation, the memory is located within the communication device described above.

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. For example, the memory may be used to store configuration information and the like.

In one possible implementation, the communication device further comprises a transceiver for receiving information or signals (or also for transmitting information or signals). Illustratively, the transceiver may also be configured to receive configuration information or the first CSI-RS, etc.

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 apparatus, which includes a processor configured to execute the method shown in the second aspect or any possible implementation manner of the second aspect. Alternatively, the processor is adapted to execute a program stored in the memory, which when executed, performs the method as shown in the second aspect or any possible implementation of the second aspect.

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

In one possible implementation, the communication device further comprises a transceiver for transmitting information or signals (or also for receiving information or signals). Illustratively, the transceiver may be configured to transmit configuration information or a first CSI-RS, etc.

In this embodiment, the communication device may be a network device or a chip in a network device. The network equipment comprises a base station, a control node and the like.

In a seventh aspect, an embodiment of the present application provides a communication apparatus, including a logic circuit and an interface, where the logic circuit and the interface are coupled; the interface is used for inputting configuration information; the logic circuit is configured to input a plurality of first CSI-RSs according to the first CSI-RS resources and the plurality of first scrambling IDs, and perform channel estimation according to the plurality of first CSI-RSs.

Optionally, the communication device further comprises a memory, and the memory is used for storing configuration information and the like.

It is to be understood that, regarding the description of the configuration information or the first scramble ID, etc., reference may be made to the description of the above first aspect or second aspect; alternatively, reference may also be made to various embodiments shown below, which are not described in detail here.

In an eighth aspect, an embodiment of the present application provides a communication apparatus, which includes a logic circuit and an interface, where the logic circuit and the interface are coupled; the logic circuit is used for determining configuration information; the interface is used for outputting the configuration information.

It is to be understood that, with respect to the description of the configuration information or the first scramble ID, etc., reference may be made to the description of the above first aspect or second aspect; alternatively, reference may also be made to various embodiments shown below, which are not described in detail herein.

In a ninth aspect, embodiments of the present application provide a computer-readable storage medium for storing a computer program which, when run on a computer, causes the method shown in the first aspect or any possible implementation manner of the first aspect to be performed.

In a tenth aspect, embodiments of the present application provide a computer-readable storage medium for storing a computer program, which when run on a computer causes the method shown in the second aspect or any possible implementation manner of the second aspect to be performed.

In an eleventh aspect, embodiments of the present application provide a computer program product comprising a computer program or computer code, which when run on a computer causes the method illustrated in the first aspect or any possible implementation manner of the first aspect to be performed.

In a twelfth aspect, embodiments of the present application provide a computer program product comprising a computer program or computer code which, when run on a computer, causes the method shown in the second aspect or any possible implementation of the second aspect described above to be performed.

In a thirteenth aspect, an embodiment of the present application provides a computer program, which when running on a computer, performs the method shown in the first aspect or any possible implementation manner of the first aspect.

In a fourteenth aspect, embodiments of the present application provide a computer program that, when running on a computer, performs the method shown in the second aspect or any possible implementation manner of the second aspect.

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

Drawings

Fig. 1 is a schematic view of a multi-station collaboration scenario provided in an embodiment of the present application;

fig. 2a to fig. 2c are schematic diagrams of a communication system according to an embodiment of the present application;

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

fig. 4 is a flowchart illustrating a resource allocation method according to an embodiment of the present application;

fig. 5a is a schematic flowchart of a resource allocation method according to an embodiment of the present application;

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

fig. 5c is a schematic diagram of a resource repetition provided in the embodiment of the present application;

FIG. 5d is a schematic diagram of a resource repetition provided by an embodiment of the present application;

fig. 6 is a flowchart illustrating a resource allocation method according to an embodiment of the present application;

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

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described with reference to the accompanying drawings.

The terms "first" and "second," and the like in the description, claims, and drawings of the present application are used solely to distinguish between different objects and not to describe a particular order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. Such as a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the 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. Those skilled in the art can explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

In this application, "at least one" means one or more, "a plurality" means two or more, "at least two" means two or three and three or more, "and/or" for describing an association relationship of associated objects, which means that there may be three relationships, for example, "a and/or B" may mean: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one item(s) below" or similar expressions refer to any combination of these items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b," a and c, "" b and c, "or" a and b and c.

The method provided by the present application may be applied to various communication systems, for example, an internet of things (IoT) system, a narrowband band internet of things (NB-IoT) system, a Long Term Evolution (LTE) system, a fifth generation (5 th-generation, 5G) communication system, a new communication system (e.g., 6G) appearing in future communication development, and the like. The method provided by the application can also be applied to a Wireless Local Area Network (WLAN) system, such as wireless-fidelity (Wi-Fi).

The technical scheme provided by the application can also be applied to Machine Type Communication (MTC), long term evolution-machine (LTE-M) for inter-machine communication, device-to-device (D2D) network, machine-to-machine (M2M) network, internet of things (IoT) network, or other networks. The IoT network may comprise, for example, a car networking network. The communication modes in the car networking system are collectively referred to as vehicle-to-anything (V2X, X may represent anything), for example, the V2X may include: vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, vehicle to pedestrian (V2P) communication, or vehicle to network (V2N) communication, and the like. For example, in fig. 2a shown below, the terminal device may communicate with the terminal device through D2D technology, M2M technology, or V2X technology.

Fig. 2a is a schematic diagram of a communication system according to an embodiment of the present application. As shown in fig. 2a, the communication system may comprise at least one network device and at least one terminal device.

The introduction to the network device and the terminal device is as follows:

illustratively, the network device may be a next generation node B (gNB), a next generation evolved node B (ng-eNB), or a network device in future 6G communication, etc. The network device may be any device with wireless transceiving capabilities including, but not limited to, the base stations shown above (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, and the like in a wireless local area network (WiFi) system. Optionally, the network device may be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. Alternatively, the network device may be a wearable device or a vehicle-mounted device, etc. Optionally, the network device may also be a small station, a transmission reception node (TRP) (or may also be referred to as a transmission point), and the like. It is understood that the network device may also be a base station in a Public Land Mobile Network (PLMN) for future evolution, and the like.

In some deployments, a base station (e.g., a gNB) may be composed of a Centralized Unit (CU) and a Distributed Unit (DU). That is, the functions of the base stations in the access network are split, part of the functions of the base stations are deployed in one CU, and the rest of the functions are deployed in a DU. And a plurality of DUs share one CU, so that the cost can be saved, and the network expansion is easy. In other deployments of base stations, a CU may also be divided into a CU-Control Plane (CP), a CU-User Plane (UP), and so on. In some deployments of the base station, the base station may also be an open radio access network (ora) architecture or the like, and the specific type of the base station is not limited in the present application.

Illustratively, the terminal device may also be referred to as a User Equipment (UE), a terminal, etc. The terminal equipment has a wireless transceiving function, can be deployed on land and comprises an indoor or outdoor, a handheld, a wearable or a vehicle-mounted terminal; can also be deployed on the water surface, such as a ship and the like; it may also be deployed in the air, such as on an airplane or balloon, etc. The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid, a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in home (smart home), and the like. It is to 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, etc.

Optionally, the terminal device shown in the present application may include a vehicle in a vehicle networking (e.g., a whole vehicle), or include a vehicle-mounted device or a vehicle-mounted terminal in the vehicle networking, and the present application does not limit a specific form of the terminal device when applied to the vehicle networking.

For convenience of description, the method related to the present application will be described below by taking a terminal device as an example.

In the communication system shown in fig. 2a, one base station and four UEs, such as UE1 to UE4 in fig. 2a, are included. For example, in the communication system, the base station may send configuration information and CSI-RS to the UEs 1 to 4, and the UEs 1 to 4 may report measurement results of channel estimation to the base station. UE1, UE3 and UE4 in fig. 2a may be mobile phones or the like, and UE2 may be cars or the like. It is understood that for the communication manner between the UEs, reference may be made to the above description, and details are not described here. It is understood that, as for the interaction method between the base station and the UE, reference may be made to the following descriptions, including fig. 4, fig. 5a, fig. 6, etc., which will not be described in detail herein.

It should be understood that fig. 2a exemplarily shows one base station and four UEs, and communication links between the communication devices. Optionally, the communication system may include a plurality of base stations, and each base station may include other number of UEs, for example, more or fewer UEs, within the coverage area of the base station, which is not limited in this application.

Each of the above communication devices, such as the base station, UE1 to UE4 in fig. 2a, may be configured with multiple antennas. The plurality of antennas may include at least one transmitting antenna for transmitting a signal and at least one receiving antenna for receiving a signal, and the like, and the embodiment of the present application is not limited to 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, and the embodiments of the present application are not limited thereto.

Fig. 2b is a schematic diagram of another communication system provided in an embodiment of the present application, where the communication system may include at least one UE and at least two TRPs. As shown in fig. 2b, TRP1, TRP2 and TRP3 communicate jointly with the UE, constituting a cooperating TRP set for the UE. For example, one control node, such as TRP1, may be included in the set of cooperating TRPs. 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 TRP 3).

Fig. 2c is a schematic diagram of another communication system provided in 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. Illustratively, the base station may be used to control (or schedule) TRP1, TRP2 and TRP3. In fig. 2c the three TRPs TRP1, TRP2 and TRP3 are indicated by dashed lines which can be controlled by the base station. Illustratively, a base station may determine configuration information and transmit the configuration information to a TRP (e.g., TPR1, TRP2, TRP3, etc.). For example, after the TRP1 receives the configuration information, the configuration information may be transmitted to the UE. For another example, the base station may directly transmit configuration information and the like to the UE.

It is to be understood that the communication systems shown in fig. 2a to 2c are only examples, and the following may also be referred to for a detailed description of the respective devices.

In a multi-station transmission system, if CSI-RS resources are respectively configured for different TRPs serving each UE, as the number of TRPs in a cooperative TRP set of the UE increases, overhead of the CSI-RS resources that the system needs to configure increases. Especially when one TRP transmits CSI-RS through multiple ports (e.g., two or more ports), to avoid interference, the network device may need to allocate one CSI-RS resource for each port. In this case, overhead of CSI-RS resources may be drastically increased.

In view of this, the present application provides a resource allocation method and apparatus, which can effectively improve the situation that the overhead of the CSI-RS resource 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 cooperative TRPs of multiple UEs in the large number of UEs are the same, the cooperative TRPs in the cooperative TRP sets of the multiple UEs may all use the same time-frequency resource to transmit the CSI-RS, so that the method provided by the present application can more effectively reduce the overhead of the CSI-RS resource. Particularly, by the method provided by the application, the performance is ensured, and meanwhile, the CSI-RS resource overhead under a large-scale cooperation scene can be reduced. Understandably, a large-scale collaboration scenario can be understood as: for a range of UEs, the number of cooperating TRPs within the range is greater than or equal to a certain number. If the number of cooperative TRPs in the certain range is equal to 10 or 21, the value of the certain number is not limited in the embodiments of the present application. For example, the number of TRPs in the cooperative set of TRPs for different UEs within the certain range is in turn: 3. 2, 3, the certain number being equal to 10, the number of cooperative TRPs within the certain range being equal to 11 (greater than 10), and belonging to a large-scale cooperative scenario. It is understood that the specific description about the large-scale collaboration scenario may also refer to relevant standards or protocols, etc., and the application is not limited to the large-scale collaboration scenario.

Before describing the resource allocation method according to the present application, the terms related to the present application will be described in detail.

1. CSI-RS resource

Illustratively, the CSI-RS resource may be used to represent any one or more of time domain resources, frequency domain resources, or spatial (code domain) resources occupied by transmitting the CSI-RS. The CSI-RS resource may be associated with (and may also be referred to as corresponding to) configuration information that may be used to determine the CSI-RS resource, or alternatively, the configuration information may include information of the CSI-RS resource. Illustratively, a CSI-RS resource may be associated with (and may also be referred to as corresponding to) any one or more of the following (or, alternatively, information that may also be referred to as a CSI-RS resource includes any one or more of the following): time domain period, time domain offset, resource mapping (e.g., RE location), number of antenna ports, frequency domain density, code Division Multiplexing (CDM) type, power parameter or scrambling Identity (ID), etc. It is understood that the description of the CSI-RS resource may refer to related standards or protocols, etc., and the application is not limited thereto.

2. Scrambling ID

The scrambling ID may be used to generate a pilot sequence. For example, the TRP may generate a pilot sequence according to the scrambling ID, and map the pilot sequence to a Resource Element (RE) allocated by the base station for the UE, and then transmit the pilot sequence with a certain power. The signal transmitted with a certain power may be referred to as a pilot for measuring channel information, such as CSI-RS.

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

where r (m) represents one symbol in the pilot sequence generated from the scrambling ID.

In this application, m may optionally denote the number of REs on one Orthogonal Frequency Division Multiplexing (OFDM) symbol. Optionally, m represents the number of REs over a plurality of OFDM symbols. The multiple OFDM symbols may relate to time domain resources occupied by a cooperative TRP of the UE when transmitting the CSI-RS multiple times according to the same scrambling ID. Illustratively, the number of the plurality of OFDM symbols may be equal to the sum of the number of OFDM symbols occupied by one TRP when transmitting 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 plurality of OFDM symbols may be determined according to the number of times that one TRP transmits CSI-RS according to the same scrambling ID. As shown in fig. 5a, the number of the plurality of OFDM symbols may be equal to the sum of the number of OFDM symbols occupied by the first CSI-RS transmitted by the TRP and the number of OFDM symbols occupied by the second CSI-RS transmitted by the TRP. In various embodiments shown below, the pilot sequence may be generated according to the number of REs and the scrambling ID on one OFDM symbol, or the long pilot sequence may be generated according to the number of REs and the scrambling ID on a plurality of OFDM symbols. When a long pilot sequence is generated by the number of REs over a plurality of OFDM symbols, the pilot sequences generated between different TRPs can be made low-correlated, thereby enabling further improvement in performance of channel estimation.

It is understood that m represents the number of REs on one OFDM symbol, and it is also understood that m has a value range of the number of REs on one OFDM symbol. m denotes the number of REs on a plurality of OFDM symbols, which can also be understood as the range of values of m is the number of REs on the plurality of OFDM symbols. For example, the minimum value of m may be 0 or 1, and the present application is not limited thereto.

Where c (i) is a pseudo-random sequence used to generate r (m), which may be initialized by an initialization factor c _init And (4) determining. C is _init May be determined by a number of factors, such as symbol identification, slot identification, or scrambling ID. Such as

Indicates the number of symbols (symbols) included in one slot (slot).

Indicating the slot number within a radio frame. l represents the number of the symbol. n is a radical of an alkyl radical _ID Indicating the scrambling ID.

It is understood that the relation between the scrambling ID and the pilot sequence shown here is only an example, and the relevant standard or protocol and the like may also be referred to for the relation between the scrambling ID and the pilot sequence.

It is 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 relationship between the second scrambling ID and the pilot sequence generated according to the second scrambling ID, which are shown below and will not be described in detail.

3. Cooperative TRP set

The multi-station cooperative transmission is a method for improving the resource utilization rate and reducing the interference level among cells. The technologies of multi-station cooperative transmission include cooperative beamforming (coordinated beamforming), cooperative scheduling (coordinated scheduling), joint transmission (joint transmission), dynamic transmission point selection (dynamic point selection), dynamic transmission point muting (dynamic point muting), and the like. Illustratively, the base stations (or TRPs) may interact with each other through backhaul, air interface, and the like, to coordinate transmission of required information. By adopting the transmission technologies, the interference to the edge users can be reduced, and the performance of the system can be improved. For example, multiple TRPs, i.e. cooperating TRP sets of a UE, may provide services (e.g. data transmission or signaling) for the UE on the same scheduling unit. The same scheduling unit shown here may include any one of the same Transmission Time Interval (TTI), the same slot (slot), the same OFDM symbol, and the like. Illustratively, the TRPs shown in the present application may be transceiver points, which may be physically different base stations, or different antenna panels of one base station, etc.

Fig. 3 is a scene schematic diagram of multi-station collaboration provided in 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 cooperative TRP set, the cooperative TRP sets may be different between different UEs. For example, the cooperation TRP set of UE1 includes TRP1, TRP2, the cooperation TRP set of UE2 includes TRP3, TRP4, and the cooperation TRP set of UE3 includes TRP1, TRP3, TRP4. For another example, when a UE is close to a certain TRP and the UE is far from other TRPs, only one TRP (TRP 5 shown in fig. 3) may serve the UE.

Fig. 4 is a schematic flowchart of a resource allocation method provided in an embodiment of the present application, and as shown in fig. 4, the method includes:

401. the network device determines configuration information, which includes information of a first CSI-RS resource corresponding to the plurality of first scrambling IDs.

Illustratively, the network device may be a base station. For example, the base station may be used to control a cooperative set of TRPs for the UE. The cooperative TRP sets of the UE may be different TRPs on a physical entity, or the cooperative TRP sets 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 one TRP comprised in the UE's set of cooperating TRPs.

For example, the information of the first CSI-RS resource may include: any one or more of time domain period, time domain offset, frequency domain density, frequency domain offset, or resource mapping. For example, a time domain period may be used to determine a period in the time domain, and a time domain offset may be used to determine an offset in the time domain. The frequency domain density is used to determine the number of REs occupied by a port (port) on an RB, and the frequency domain offset is used to determine the RE offset on the RB, e.g., the frequency domain offset can be used to determine the RE offset on RB 0. The resource map may be used to determine the relative position between different ports, e.g., the resource map may be used to determine the time domain position and/or frequency domain position of other ports relative to port0 (port 0). It is understood that specific contents of the information of the first CSI-RS resource are not limited in the embodiments of the present application.

Illustratively, the first scrambling ID may be used to generate a pilot sequence. It is to be understood that the plurality of first scrambling IDs described above may also be understood as at least two first scrambling IDs. That is, 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, etc. In the embodiment of the present application, the number of the 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 is understood that, for the specific description of the first CSI-RS resource, reference may be made to the above description of the CSI-RS resource, and for the specific description of the first scrambling ID, reference may be made to the above description of the scrambling ID, which is not repeated herein. The relationship regarding the first CSI-RS resource and the first scrambling ID may be as shown below and will not be detailed first herein.

The configuration information includes information of a first CSI-RS resource, where the first CSI-RS resource corresponds to a plurality of first scrambling IDs, and the following implementation may be implemented:

the first implementation mode,

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

Alternatively, the configuration information includes information of the first CSI-RS resource. Further, the network device may indicate the plurality of first scrambling IDs through other information. By including information of the first CSI-RS resource in the configuration information and indicating the plurality of first scrambling IDs by further information, such as indication information, the network device can indicate the modified first scrambling ID by the indication information in time when the first scrambling ID needs to be modified. The implementation mode improves the condition that the network equipment needs to simultaneously reconfigure the first CSI-RS resource and the plurality of corresponding first scrambling IDs, and is more flexible. Optionally, the indication information includes each of the plurality of first scrambling IDs.

Optionally, the indication information includes an index of each of the plurality of first scrambling IDs.

Optionally, the indication information includes multiple quasi co-located (QCL) information, where one QCL information corresponds to one first scrambling ID. For example, the QCL information may include a synchronization signal and a Physical Broadcast Channel (PBCH) block (SS/PBCH block) (SSB for short) or CSI-RS, etc., and the SSB or CSI-RS itself corresponds to a scrambling ID, and thus the scrambling ID corresponding to the SSB or CSI-RS itself may be the first scrambling ID. Accordingly, by indicating the QCL information, the UE can be made aware of the first scrambling ID of the TRP corresponding to the QCL information. That is, the UE may take the scrambling ID corresponding to the SSB or CSI-RS itself as the first scrambling ID of the corresponding TRP.

Optionally, the indication information includes IDs of multiple Transmission Configuration Indicator (TCI) states, where an ID of one TCI state corresponds to one first scrambling ID. For example, the UE may generate a first scrambling ID from the ID of the TCI state. For example, the relationship between the ID of the TCI state and the first scrambling ID may be as follows:

where r (m) represents one symbol in the pilot sequence generated from the first scrambling ID. m represents the number of REs on one symbol, or m represents the number of REs on a plurality of symbols. c (i) is a pseudo-random sequence used to generate r (m), which may be determined by an initialization factor c _init And (4) determining. C is _init May be determined by a number of factors, such as symbol identification, slot identification, or first scrambling ID. Such as

Indicates the number of symbols (symbols) included in one slot (slot).

Indicating the slot number within a radio frame. L represents the symbol number. n is a radical of an alkyl radical _ID Representing a first scrambling ID generated from the ID of the TCI state. For example, the n may be generated from the ID of the reference and the ID of the TCI state _ID . The value of X may be any integer of 1 to 31. TCIid represents the ID of the TCI state.

The second implementation mode,

The configuration information includes information of the first CSI-RS resource. The plurality of first scrambling IDs corresponding to the first CSI-RS resource may be preset (e.g., defined by a communication protocol) or negotiated in advance. For example, the UE and the network device negotiate in advance such that the plurality of first scrambling IDs are stored in the UE and the network device (e.g., in a base station or a controller), and so on. For example, the plurality of first scramble IDs are defined by a protocol, and the like, which is not limited in the embodiment of the present application.

The plurality of first scrambling IDs are set in a preset mode, so that the network equipment and the terminal equipment can acquire the plurality of first scrambling IDs corresponding to the first CSI-RS resource and can save signaling overhead.

402. The network device sends configuration information.

Illustratively, the network device may be a base station for controlling a coordinated TRP set of the UE. For example, the base station may send the configuration information to one TRP in the UE's cooperative set of TRPs, which then sends the configuration information to the UE and other TRPs, respectively. For another example, the base station may transmit configuration information to one TRP in the cooperative TRP set of the UE and the UE, respectively, and then the TRP transmits the configuration information to other TRPs. For another example, the base station may transmit the configuration information to each TRP in the cooperative TRP set of the UE, and then one TRP in the cooperative TRP set transmits the configuration information to the UE. For another example, the base station may transmit configuration information to each TRP in the UE's cooperative TRP set, and transmit the configuration information to the UE (as shown in 402 of the dotted line portion shown in fig. 4). The embodiments of the present application are not limited. Correspondingly, the UE and each TRP in the cooperative TRP set of the UE receive the configuration information respectively.

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

For example, the cooperative TRP sets of the UE are different antenna panels of the base station, and the base station may directly send the configuration information to the UE, and correspondingly, the UE receives the configuration information. For example, different antenna panels of a base station may be connected with a control node of the base station, whereby after determining the configuration information by the control node in 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 one possible implementation, the method shown in fig. 4 further includes:

the network device transmits indication information indicating the plurality of first scramble IDs. For example, the indication information may be included in any one of the following signaling: radio Resource Control (RRC) signaling, medium access control-control element (MAC-CE) signaling, or Downlink Control Information (DCI). That is, the configuration information sent by the network device may include or may not include indication information of the plurality of first scrambling IDs. But indicates the plurality of first scrambling IDs through other information. It can be understood that, in the embodiment of the present application, the sequence of sending the configuration information and the indication information by the network device is not limited.

It can be understood that, in the embodiments of the present application, the method for the network device to send the configuration information is not limited. Through the method, each TRP in the cooperation TRP set of the UE can acquire the configuration information, so that each TRP in the cooperation TRP set of the UE can send the first CSI-RS according to the first CSI-RS resource and the first scrambling ID. It is understood that the first scrambling ID corresponding to each TPR may be configured by a network device, and the like, which is not limited in this embodiment of the present application. For example, the first CSI-RS resource corresponds to a first scrambling ID1, a first scrambling ID2, and a first scrambling ID3. Each TRP in the cooperative TRP set of the UE may know the corresponding first scrambling ID, for example, TRP1 may know that it needs to generate a pilot sequence 1 according to the first scrambling ID1, TRP2 may know that it needs to generate a pilot sequence 2 according to the first scrambling ID2, TRP3 may know that it needs to generate a pilot sequence 3 according to the first scrambling ID3. For example, a method for each TRP in a cooperative set of TRPs of a UE to learn a respective corresponding first scrambling ID may include: 1. and carrying out interactive negotiation among different TRPs in the cooperative TRP set of the UE, and determining respective corresponding first scrambling IDs. It is understood that, in this manner, after the negotiation between different TRPs is completed, the negotiation result may be sent to a network device (e.g., a base station or a control node, etc.) by any TRP in the cooperative TRP set of the UE. Thereby, the network device can be made aware of the first scrambling ID corresponding to each TRP. 2. The configuration information includes information indicating a correspondence between the TRP and the first scrambling ID. Alternatively, the information indicating 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, and the like, which is not limited in the embodiment of the present application. 3. The TRP and its corresponding first scrambling ID may be preset (e.g., defined by a communication protocol). That is, the correspondence relationship of the TRP and the first scramble ID may be set in advance. The method for the TRP to know its corresponding first scrambling ID is shown here as an example, and the embodiment of the present application is not limited thereto.

For example, the format of the configuration information in the first implementation manner may be as follows:

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

It is understood that the format of the configuration information shown above is only an example, and should not be construed as limiting the embodiments of the present application.

403. The terminal equipment receives a plurality of first CSI-RS from a plurality of TRPs according to the first CSI-RS resource and a plurality of 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 transmitted by a TRP according to a first scrambling ID on a first CSI-RS resource; similarly, the UE receives another first CSI-RS on the first CSI-RS resource that another TRP transmits according to another first scrambling ID. Optionally, the UE may further receive, on the first CSI-RS resource, a further first CSI-RS transmitted by a further TRP according to a further first scrambling ID.

In the embodiment of the present application, the number of cooperative TRPs of the UE may be multiple. For example, a UE has a set of cooperative TRPs TRP1, TRP2, \8230, and TRPn, n is an integer greater than 1. Illustratively, the number of cooperative TRPs of the UE is the same as the number of first CSI-RSs received by the UE. That is, the UE may receive the first CSI-RS of the different TRP transmissions according to the first CSI-RS resource and the plurality of first scrambling IDs, respectively. It can be understood that in the embodiment of the present application, the first scrambling IDs corresponding to different TRPs are different, and thus the first CSI-RS transmitted by different TRPs are also different. For example, the first CSI-RS transmitted by the TRP1 may be a pilot sequence generated according to the first scrambling ID1 transmitted on the first CSI-RS resource 1, the first CSI-RS transmitted by the TRP2 may be a pilot sequence generated according to the first scrambling ID2 transmitted on the first CSI-RS resource 2, the first CSI-RS transmitted by the TRP3 may be a pilot sequence generated according to the first scrambling ID3 transmitted on the first CSI-RS resource 3. The first scrambling ID1, the first scrambling ID2 and the first scrambling ID3 all belong to the first scrambling ID, and the values of the IDs are different only because the TRPs corresponding to the first scrambling ID, the TRPs corresponding to the first scrambling ID and the TRPs corresponding to the first scrambling ID are different.

In network planning, a plurality of TRPs with larger Reference Signal Received Power (RSRP) when a reference signal reaches a UE are generally selected to provide services for the UE. For example, the network device may determine the cooperation TRP set of the UE according to a relationship from the TRP to the RSRP of the UE from large to small of the reference signal, such as selecting the TRPs with the first few RSRPs as the cooperation TRPs of the UE. It is understood that the method for determining the cooperative TRP set for the UE shown here is only an example, and the method for determining the cooperative TRP set for the UE is not limited in the embodiments of the present application.

In this embodiment of the present application, optionally, the number of the first scrambling IDs may be determined according to a size of a cooperation set of the UE. For example, if the cooperative TRPs of a UE are TRP1, TRP2, and TRP3, the cooperative set size of the UE is 3, and thus, the network device may configure 3 first scrambling IDs for the UE. Optionally, the number of the first scrambling IDs is preset by a network device (e.g., a base station or a control node), or is defined by a protocol, etc. For example, the number of first scramble IDs is set to 3 in advance. It is understood that the explanation about the number of first scramble IDs is equally applicable to the following description about the number of second scramble IDs. It can be understood that, the method for determining the size of the cooperation set in the embodiment of the present application is not limited.

For example, the cooperating TRP set of the UE includes TRP1, TRP2, and TRP3, then TRP1 may transmit the first CSI-RS (e.g., CSI-RS1, and CSI-RS1 belongs to the first CSI-RS) on the first CSI-RS resource according to the first scrambling ID (i.e., scrambling ID1 corresponding to TRP1, and scrambling ID1 belongs to the first scrambling ID), TRP2 may transmit the first CSI-RS (e.g., CSI-RS2, and CSI-RS2 belongs to the first CSI-RS) on the first CSI-RS resource according to the first scrambling ID (e.g., scrambling ID2 corresponding to TRP2, and scrambling ID2 belongs to the first scrambling ID), TRP3 may transmit the first CSI-RS (e.g., CSI-RS3, and CSI-RS3 belongs to the first scrambling ID) on the first CSI-RS resource according to the first scrambling ID (i.e., scrambling ID3 corresponding to TRP3, and scrambling ID3 belongs to the first CSI-RS). Correspondingly, the UE can receive the CSI-RS1, the CSI-RS2 and the CSI-RS3 according to the scrambling ID1, the scrambling ID2 and the scrambling ID3.

Optionally, the method shown in fig. 4 further comprises step 404 and step 405.

404. And the UE carries out channel estimation according to the plurality of first CSI-RSs.

Illustratively, the UE may perform channel estimation through a least squares (least squares) algorithm. Optionally, the UE may also reduce the influence of noise through a filtering algorithm. For example, the UE may know the pilot sequence at a specific resource location according to the first CSI-RS resource, so that after receiving a signal (e.g., the first CSI-RS), the channel may be recovered by using an LS algorithm. For another example, in the embodiment of the present application, different first scrambling IDs correspond to different pilot sequences, so that the UE may perform LS estimation on the same received signal for multiple times, and perform channel estimation on different pilot sequences (which may also be referred to as pilot symbols) to obtain channel estimation results respectively. For another example, the UE may first solve the channel corresponding to one pilot sequence (for example, ID sorting or configuring the top), then subtract the channel information corresponding to the pilot sequence from the received signal, and then estimate other pilot sequences (which may be referred to as joint channel estimation between pilot sequences).

Exemplarily, the cooperative TRP set of UE1 includes TRP1, TRP2 and TRP3, and then UE1 may receive three first CSI-RSs on the first CSI-RS resources, respectively. Thus, UE1 can demodulate three channels respectively. It will be understood that the present applicationThe embodiment is not limited to whether the UE needs to know the corresponding relationship between the TRP and the first scrambling ID. If the correspondence between the TRP and the first scrambling ID is not known before the UE1 performs channel estimation, the UE1 may correspond to 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 represents an interfering signal and n represents noise. The plurality of first scrambling IDs corresponding to the first CSI-RS resource include a scrambling ID1, a scrambling ID2, and a scrambling ID3. E.g. when UE1 performs channel estimation, s ₁ Is generated from scrambling ID1, then h ₁ Is the channel response corresponding to scrambling ID1; s ₂ Is generated from scrambling ID2, then h ₂ Is the channel response corresponding to scrambling ID 2; s ₃ Is generated from scrambling ID3, then h ₃ Is the channel response corresponding to scrambling ID3. When the UE1 reports the measurement result, it only needs to indicate the corresponding relationship between the channel response and the first scrambling ID to the network device. For a detailed description of the UE1 reporting the measurement result, reference may be made to the following description, which is not detailed here.

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

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

Optionally, the UE may also report channel measurement results of multiple TRPs, respectively. For example, after demodulating the channel information corresponding to the TRP1, the UE reports the channel information corresponding to the TRP1. And after demodulating the channel information corresponding to the TRP2, the UE reports the channel information corresponding to the TRP 2. That is, the UE may report channel information corresponding to different TRPs in sequence. Optionally, when the UE reports the information corresponding to different TRPs, the UE may report the first scrambling IDs corresponding to different TRPs. For example, when the UE reports the channel information corresponding to the TRP1, the UE may also report the scrambling ID1 corresponding to the TRP 1; when reporting the channel information corresponding to the TRP2, the scrambling ID2 corresponding to the TRP2 can also be reported.

It can be understood that, regarding the method for reporting the channel information by the UE, reference may be made to a 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, other processing may also be performed, such as quantizing channel information into CSI feedback quantity, and then reporting the CSI feedback quantity. For example, the UE may report feedback information carried in a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH), or report measurement information loaded by a pilot, and the like.

In one possible implementation, the method shown in fig. 4 may further include:

the terminal device sends capability information to the network device, and the capability information can be used for indicating any one or more of the following items: the number of supported scrambling IDs, the duration of channel estimation, whether a joint sequence of multiple symbols is supported, or whether joint channel estimation is supported. Correspondingly, the network device receives the capability information.

That is, the UE may report the number of scrambling IDs supported for one CSI-RS resource. Or, the UE may report whether the CSI calculation time required when using the method provided in the embodiment of the present application needs to be increased, or how much the CSI calculation time needs to be increased. The UE can enable the network equipment to set configuration information for the UE according to the capability information by reporting the capability information. The network equipment can adjust the generation mode of the pilot frequency sequence in time by reporting whether the joint sequence of a plurality of symbols is supported, and can adjust the demodulation performance in time by reporting whether the joint channel estimation is supported. Illustratively, if the UE supports a joint sequence of multiple symbols (which may also be referred to as a long pilot sequence), it means that the pilot sequence may be determined according to the number of REs on multiple OFDM symbols and the first scrambling ID; if a joint sequence of multiple symbols is not supported, it 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 may generate a pilot sequence according to the number of REs on the multiple OFDM symbols and the corresponding first scrambling ID, and meanwhile, the UE may decode the pilot sequence according to the number of REs on the multiple OFDM symbols and the first scrambling ID. It is understood that reference may be made to the above for a description of the relationship between the first scrambling ID, the pilot sequence and the CSI-RS, which is not described in detail herein.

It is understood that the capability information shown in the embodiment of the present application is not shown in fig. 4, but should not be construed as limiting 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 the capability information to the network device, and then the network device sends the configuration information to the terminal device.

It can be understood that the method provided in the embodiment of the present application may be applied to one UE, that is, different TRPs in a coordinated TRP set of one UE use the same time-frequency resource to transmit the first CSI-RS generated according to the respective corresponding first scrambling ID. Or, the method can also be applied to multiple UEs, for example, different TRPs in a coordinated TRP set of the multiple UEs use the same time-frequency resource to transmit first CSI-RSs generated according to respective pairs of corresponding first scrambling IDs. For example, when the method provided by the embodiment of the present application is applied to a plurality of UEs, if the sets of cooperative TRPs of two UEs in the plurality of UEs are the same, in this case, the sets of cooperative TRPs of the two UEs may both use the same first CSI-RS resource to transmit the first CSI-RS generated according to the respectively corresponding first scrambling ID. For example, the cooperative TRP sets of the two UEs (e.g., UE1 and UE 2) are TRP1, TRP2, and TRP3, then TPR1 may transmit a first CSI-RS (e.g., CSI-RS1, and CSI-RS1 belongs to the first CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID1 corresponding to TRP1, and scrambling ID1 belongs to the first scrambling ID) to UE1 and UE2, respectively, on the first CSI-RS resource; TPR2 may transmit a first CSI-RS (e.g., CSI-RS2, and CSI-RS2 belongs to the first CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID2 corresponding to TRP2, and scrambling ID2 belongs to the first scrambling ID) to UE1 and UE2, respectively, on the first CSI-RS resource; the TPR3 may transmit a first CSI-RS (e.g., CSI-RS3, and CSI-RS3 belongs to the first CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID3 corresponding to TRP3, and scrambling ID3 belongs to the first scrambling ID) on the first CSI-RS resource to UE1 and UE2, respectively. For another example, if the cooperation TRP set of UE1 includes TRP1 and TRP2 and the cooperation TRP set of UE2 includes TRP1 and TRP3, TRP1 may transmit a first CSI-RS (e.g., CSI-RS1 and CSI-RS1 belongs to the first CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID1 corresponding to TRP1 and scrambling ID1 belongs to the first scrambling ID) to UE1 and UE2, respectively, on the first CSI-RS resource; the TRP2 may transmit to the UE1 on the first CSI-RS resource a first CSI-RS (e.g., CSI-RS2, and CSI-RS2 belongs to the first CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID2 to which TRP2 corresponds, and scrambling ID2 belongs to the first scrambling ID); the TRP3 may transmit a first CSI-RS (e.g., CSI-RS3, and CSI-RS3 belonging to the first CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID3 to which TRP3 corresponds, and scrambling ID3 belonging to the first scrambling ID) to the UE2 on the first CSI-RS.

In the embodiment of the application, different TRPs in a cooperative TRP set of a UE may send first CSI-RS through the same CSI-RS resource (e.g., the same time-frequency resource), and for example, different TRPs of one UE may send different first CSI-RS through the same time-frequency resource (i.e., different TRPs of one UE may multiplex the same time-frequency resource to send CSI-RS). Since different TRPs can use different first scrambling IDs respectively, thereby generating different pilot sequences (e.g. pseudo-orthogonality can be achieved between different pilot sequences), interference between different signals is effectively weakened. For example, each TRP in the UE's cooperative TRP set may multiplex the same time-frequency resource, but generate different pilot sequences using different scrambling IDs, so that the pilot sequences are mapped on the same time-frequency resource and transmitted to the UE. Because each TRP in the cooperation TRP set can use the same time-frequency resource, the condition that the expenditure of the CSI-RS resource is increased along with the number of the cooperation TRPs in the cooperation TRP set of the UE is improved, and the expenditure of the CSI-RS resource is effectively reduced. Accordingly, the UE can perform channel estimation in combination with the different first scrambling ID to obtain channel information (which may also be referred to as channel state information) between the different TRPs to the UE.

Fig. 5a is a flowchart illustrating a resource allocation method according to an embodiment of the present application. According to the resource allocation method, through repeated sending of the CSI-RS, on the basis of effectively improving the condition that the cost of the CSI-RS resource is increased along with the increase of the number of TRPs in the cooperation TRP set of the UE and reducing the cost of the CSI-RS resource, the signal to interference plus noise ratio (SINR) can be effectively improved, and the decoding performance of the CSI-RS is improved. As shown in fig. 5a, the method comprises:

501. the network device determines configuration information, which includes information of a first CSI-RS resource corresponding to the plurality of first scrambling IDs.

Optionally, the configuration information further includes information of 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 plurality of first scrambling IDs. For example, the configuration information includes information of the first CSI-RS resource and information of the second CSI-RS resource. The first CSI-RS resource corresponds to a plurality of first scrambling IDs, and the second CSI-RS resource corresponds to the plurality of first scrambling IDs.

It can be understood that, in the embodiment of the present application, since each of the plurality of CSI-RS resources included in the configuration information may correspond to a plurality of first scrambling IDs, reference may be made to fig. 4 for a description of the CSI-RS resources and the first scrambling IDs, and details are not described here. For example, the configuration information includes information of each of the plurality of CSI-RS resources and indication information of the plurality of first scrambling IDs. For another example, the configuration information includes information for each of the plurality of CSI-RS resources. Further, the network device indicates the plurality of first scramble IDs by other information. And will not be described in detail herein.

502. The network device sends configuration information.

In one possible implementation, the network device may transmit information of one CSI-RS resource (e.g., a first CSI-RS resource) and indication information of a plurality of first scrambling IDs corresponding to the CSI-RS resource.

In another possible implementation, the network device may simultaneously transmit information of each of the plurality of CSI-RS resources and indication information of a plurality of scrambling IDs corresponding to each CSI-RS resource. Alternatively, the network device may also transmit information of each of the plurality of CSI-RS resources and indication information of the plurality of scrambling IDs, respectively. The embodiments of the present application do not limit this.

It is understood that, for the related description 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. and the terminal equipment acquires the second CSI-RS resource. And each TRP in the cooperation TRP set of the terminal equipment can also determine a second CSI-RS resource.

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

optionally, the terminal device obtains the second CSI-RS resource according to the configuration information. As shown in step 501 above, the configuration information may include a first CSI-RS resource and a second CSI-RS resource. In this case, the sequence of the terminal device acquiring the first CSI-RS resource and the second CSI-RS resource is not limited.

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

For example, the second CSI-RS resource may be a repetition (repetition) of the first CSI-RS resource on a time domain resource. For example, the second CSI-RS resource is adjacent to the first CSI-RS resource in a time domain, or the second CSI-RS resource differs from the first CSI-RS resource by one or more OFDM symbols, and the like, which is not limited in this embodiment of the present application. Illustratively, the second CSI-RS resource is a repetition of the first CSI-RS resource over the frequency domain resource. For example, the second CSI-RS resource is adjacent to the first CSI-RS resource in the frequency domain, or the second CSI-RS resource is different from the first CSI-RS resource by one or more REs, and the like, which is not limited in this embodiment of the present application. For example, the second CSI-RS resource may be a repetition of the first CSI-RS resource on a time domain resource, a repetition of the first CSI-RS resource on a frequency domain resource, and the like. For example, the second CSI-RS resource may be a repetition of the first CSI-RS resource on an Orthogonal Frequency Division Multiplexing (OFDM) symbol, slot (slot), frame, or the like. For another example, the second CSI-RS resource may be a repetition of the first CSI-RS resource on a subcarrier, resource Element (RE), resource Block (RB), or the like. For another example, the second CSI-RS resource may be a repetition of the first CSI-RS resource on an OFDM symbol, etc., which are not listed here. It can be understood that the size of the second CSI-RS resource and the size of the first CSI-RS resource shown in the embodiments of the present application may be identical. It can be understood that the second CSI-RS resource shown in the embodiment of the present application is only an example, and for example, the UE may also determine a third CSI-RS resource or a fourth CSI-RS resource. If the third CSI-RS resource may be a repetition of the second CSI-RS on the time domain resource, or the third CSI-RS resource may be a repetition of the first CSI-RS resource on the time domain resource, and the like, the method for determining the third CSI-RS resource is not limited in this embodiment of the present application. For example, the third CSI-RS resource differs from the second CSI-RS resource by one OFDM symbol in the time domain, and the second CSI-RS resource differs from the first CSI-RS resource by one OFDM symbol in the time domain. For another example, the third CSI-RS resource may be one RE different in frequency domain from the second CSI-RS resource, which is one RE different in frequency domain from the first CSI-RS resource.

Fig. 5b is a schematic diagram of a resource repetition provided in the embodiment of the present application. Fig. 5b is a diagram illustrating that the coordinated TRP set of the UE transmits CSI-RS using the same resource. For example, the cooperating TRP set of the UE includes TRP1, TRP2, and TRP3, and all three TRPs may transmit respective first CSI-RS on RE1 according to respective first scrambling ID, where RE1 corresponds to the first CSI-RS resource. If the UE receives the signal on this RE1 is y ₁ Such as y ₁ ＝h ₁ *s ₁₁ +h ₂ *s ₁₂ +h ₃ *s ₁₃ + I + n. Wherein h is ₁ Is the channel response between TRP1 and UE, h ₂ Is the channel response, h, between TRP2 and the UE ₃ Is the channel response between TRP3 and the UE. s ₁₁ Is the CSI-RS signal, s, transmitted by TRP1 on RE1 ₁₂ Is the CSI-RS signal, s, transmitted by TRP2 on RE1 ₁₃ Is the CSI-RS signal transmitted by TRP3 on RE1, I denotes the interference signal and n denotes noise. Optionally, the three TRPs may also be transmitted on RE2 and respective second CSI-RS according to respective first scrambling IDs, where RE2 may be understood as a repetition of the first CSI-RS resource on another time domain resource, i.e. the second CSI-RS resource. If the UE received signal on this RE2 is y ₂ Such as y ₂ ＝h ₁ *s ₂₁ +h ₂ *s ₂₂ +h ₃ *s ₂₃ + I + n. Wherein s is ₂₁ Is the CSI-RS signal, s, transmitted by TRP1 on RE2 ₂₂ Is the CSI-RS signal, s, transmitted by TRP2 on RE2 ₂₃ Is the CSI-RS signal that TRP3 transmits on RE 2. Optionally, the three TRPs may also be transmitted on RE3 and respective third CSI-RS according to respective first scrambling IDs, wherein RE3 may be understood as a repetition of the first CSI-RS resource on yet another time domain resource, i.e. the third CSI-RS resource. The signal received by the UE on this RE3 is y ₃ E.g. y ₃ ＝h ₁ *s ₃₁ +h ₂ *s ₃₂ +h ₃ *s ₃₃ + I + n. Wherein s is ₃₁ Is the CSI-RS signal, s, transmitted by TRP1 on RE3 ₃₂ Is the CSI-RS signal, s, transmitted by TRP2 on RE3 ₃₃ Is TRP3 on RE3A transmitted CSI-RS signal. Therefore, the UE can demodulate the channel (i.e. h) corresponding to the TRP1 according to the above formula ₁ ) Channel corresponding to TRP2 (i.e. h) ₂ ) And a channel corresponding to TRP3 (i.e., h) ₃ ). It should be appreciated that in the embodiment shown in fig. 5b, one TRP generates different CSI-RS signals according to one scrambling ID on different CSI-RS resources.

It can be understood that, in the embodiment of the present application, there is no limitation on whether the UE needs to know the corresponding relationship between the TRP and the first scrambling ID. It can be understood that the manner in which the TRP transmits the CSI-RS on the RE shown in fig. 5b is merely an example, for example, the TRP may also transmit the CSI-RS on the RB, that is, the RE1, RE2 and RE3 are merely examples, and should not be construed as limiting the embodiments of the present application.

Fig. 5c is a schematic diagram of a resource repetition provided in the embodiment of the present application. As shown in fig. 5c, subcarrier 1 may be understood as the first CSI-RS resource, and subcarrier 2 may be understood as a repetition of the first CSI-RS resource on a frequency domain resource, i.e., a second CSI-RS resource. It is understood that subcarrier 1 and subcarrier 2 shown in fig. 5c are merely examples, and the frequency domain resource shown in fig. 5c should not be construed as a limitation to the embodiments of the present application. It can be understood that fig. 5c only exemplarily shows one TRP1, and reference may be made to the TRP1 for other cooperative TRP transmission methods of the UE for CSI-RS, and detailed description of embodiments of the present application is omitted.

Fig. 5d is a schematic diagram of a resource repetition provided in the embodiment of the present application. Fig. 5d shows that the second CSI-RS resource is a repetition of both the first CSI-RS resource on the time domain resource and the first CSI-RS resource on the frequency domain resource. It is understood that fig. 5d only exemplarily shows one TRP1, and reference may be made to the TRP1 for other cooperative TRP transmission methods of the UE, and the embodiments of the present application are not described in detail.

Optionally, the second CSI-RS resource is determined according to the first CSI-RS resource and the number of the first scrambling IDs. Optionally, different numbers of first scrambling IDs correspond to different patterns. Illustratively, the control node or the base station, etc. may define a pattern of time domain repetition, where the number of repetitions is determined by the number of scrambling IDs. For example, the number of first scrambling IDs is 2, the pattern of the second CSI-RS resource may be a 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 a repetition of the first CSI-RS resource on the frequency domain resource. For another example, the number of first scrambling IDs may be different, the second CSI-RS resources may all be repetitions of the first CSI-RS resources on time domain resources, but the larger the number of first scrambling IDs, the more corresponding time domain resources may be.

504. The terminal equipment receives a plurality of CSI-RS respectively according to a plurality of CSI-RS resources and a plurality of first scrambling IDs, wherein each CSI-RS resource in the plurality of CSI-RS resources corresponds to a plurality of CSI-RSs, and each CSI-RS resource in the plurality of CSI-RS resources corresponds to a plurality of first scrambling IDs. For example, the UE receives a plurality of first CSI-RSs from a plurality of TRPs according to the first CSI-RS resource and the plurality of first scrambling IDs, and receives 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 (as shown in fig. 5 a).

In the embodiment of the application, the number of the cooperation TRPs of the UE is the same as the number of the first CSI-RSs received by the UE, namely the number of the cooperation TRPs of the UE is the same as the number of the second CSI-RSs received by the UE. Illustratively, the cooperative TRPs of the UE are TRP1, TRP2 and TRP3, and the UE may receive CSI-RS1_1 belonging to the first CSI-RS sent by the TRP1, CSI-RS1_2 belonging to the first CSI-RS sent by the TRP2 and CSI-RS1_3 belonging to the first CSI-RS sent by the TRP3, respectively. And the UE can also respectively receive the CSI-RS2_1 which is sent by the TRP1 and belongs to the second CSI-RS, the CSI-RS2_2 which is sent by the TRP2 and belongs to the second CSI-RS and the CSI-RS2_3 which is sent by the TRP3 and belongs to the second CSI-RS. For example, the plurality of first scrambling IDs are scrambling ID1, scrambling ID2, and scrambling ID3, respectively. The UE may receive CSI-RS1_1 from TRP1 according to the first CSI-RS resource and scrambling ID1, CSI-RS1_2 from TRP2 according to the first CSI-RS resource and scrambling ID2, and CSI-RS1_3 from TRP3 according to the first CSI-RS resource and scrambling ID3. And, the UE may also receive CSI-RS2_1 from TRP1 according to the second CSI-RS resource and scrambling ID1, CSI-RS2_2 from TRP2 according to the second CSI-RS resource and scrambling ID2, and CSI-RS2_3 from TRP3 according to the second CSI-RS resource and scrambling ID3.

It is understood that the above only illustrates two CSI-RS resources, e.g. the cooperating TRP sets of the UE are TRP1, TRP2, \8230, and TRPn, n is an integer greater than 2. To enable the UE to perform channel estimation efficiently, the UE may receive the plurality of nth CSI-RSs based on the nth CSI-RS resource and the plurality of first scrambling IDs. It can be understood that when the control node or the base station sets the maximum value of the cooperation set of the UE, n also needs to be less than or equal to the maximum value.

The second CSI-RS resource is only exemplarily shown above. Similarly, the embodiment of the present application may further include a third CSI-RS resource and the like. Thereby, the terminal device may also obtain the third CSI-RS resource. For example, 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 may be determined according to the second CSI-RS resource and the pattern. For example, the terminal device may receive a plurality of third CSI-RSs from the plurality of TRPs according to the third CSI-RS resource and the plurality of first scrambling IDs. It is understood that the specific description of the third CSI-RS resource may refer to the second CSI-RS resource and will not be described in detail herein. In the embodiment of the application, the number of times that one TRP transmits a CSI-RS may be equal to the number of TRPs in the cooperative TRP set of the UE. For example, if the number of TRPs in the cooperative TRP set of the UE is 3, for the same TRP, the UE may receive a first CSI-RS sent on a first CSI-RS resource, a second CSI-RS sent on a second CSI-RS resource, and a third CSI-RS sent on a third CSI-RS resource of the same TRP, respectively. Meanwhile, 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 is understood that, the embodiment of the present application may include at least two CSI-RS resources, and the number of the CSI-RS resources specifically included may be related to the number of TRPs in the cooperative TRP set of the UE, and may also be related to other factors, which is not limited in this application.

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

505. And the terminal equipment carries out channel estimation according to the multiple CSI-RSs corresponding to the multiple CSI-RS resources. For example, the UE performs channel estimation according to the plurality of first CSI-RSs and the plurality of second CSI-RSs. For another example, the UE performs channel estimation according to the plurality of first CSI-RSs, the plurality of second CSI-RSs and the plurality of third CSI-RSs. For example, the UE may perform joint estimation for pilot sequences transmitted on multiple CSI-RS resources for the same TRP. For example, after the UE receives two pilot sequences from the same TRP transmission, the UE may filter the two pilot sequences and then perform channel estimation using the filtered pilot sequences (which may be referred to as joint channel estimation). 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: and the UE determines the time length of channel estimation according to the number of the first scrambling IDs. Or, the UE determines the duration of channel estimation according to the size of its cooperative TRP set. Since the UE may repeatedly transmit the CSI-RS according to the size of the TRP cooperation set, the UE may estimate the duration of channel estimation according to the size of the TRP cooperation set. Optionally, the UE may also report the duration of the channel estimation, so that the network device may configure the processing delay for the UE, and may perform configuration by combining the duration of the channel estimation. Therefore, the UE can have enough time for channel estimation, and the condition that the UE is not finished with channel estimation and is overtime is avoided.

506. And the terminal equipment reports the measurement result of the channel estimation.

It is understood that the detailed description of step 506 can refer to fig. 4, and will not be described in detail here.

In one possible implementation, the method shown in fig. 5a further includes:

the terminal device sends capability information to the network device, which may be used to indicate any one or more of: the number of supported scrambling IDs, the type of supported patterns, the duration over which channel estimation is performed, the number of supported scrambling IDs on a frequency domain unit, whether a joint sequence of multiple symbols is supported, or whether joint channel estimation is supported. Correspondingly, the network device receives the capability information.

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

It is understood that the capability information shown in the embodiments of the present application is not shown in fig. 5a, but should not be construed as limiting the embodiments of the present application. For the description of the capability information, reference may also be made to fig. 4, which is not described in detail here.

As an example, the configuration information shown in the embodiment of the present application may further include the following implementation manners:

if the configuration information comprises information of N CSI-RS resources and N scrambling IDs, one CSI-RS resource corresponds to one scrambling ID. For example, under a specific condition, if the N CSI-RS resources correspond to the same reporting configuration, the UE may default that the scrambling ID corresponding to each CSI-RS resource may be used for the N CSI-RS resources.

For example, the cooperation TRP set of the UE includes TRP1 and TRP2, then TRP1 may transmit CSI-RS (e.g., CSI-RS1_ 1) on CSI-RS resource 1 according to scrambling ID1 (i.e., scrambling ID corresponding to TRP 1), and TRP2 may transmit CSI-RS (e.g., CSI-RS1_ 2) on CSI-RS resource 1 according to scrambling ID2 (i.e., scrambling ID corresponding to TRP 2). The TRP1 may also transmit a CSI-RS (e.g., CSI-RS2_ 1) on CSI-RS resource 2 according to scrambling ID1, and the TRP2 may transmit a CSI-RS (e.g., 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 may be applied to one UE, that is, different TRPs in a coordinated TRP set of one UE transmit first CSI-RSs generated according to respective corresponding first scrambling IDs using the same time-frequency resources. Or, the method may also be applied to multiple UEs, for example, different TRPs in a coordinated TRP set of the multiple UEs may use the same time-frequency resource to transmit, on the same scheduling unit, the first CSI-RS generated according to the respective pairs of corresponding first scrambling IDs. For example, when the method provided by the embodiment of the present application is applied to multiple UEs, if the sets of cooperative TRPs of two UEs in the multiple UEs are the same, in this case, the sets of cooperative TRPs of the two UEs may both use the same first CSI-RS resource to transmit the first CSI-RS generated according to the respectively corresponding first scrambling ID in the same scheduling unit. Optionally, the cooperative TRP sets of the two UEs may both use the same second CSI-RS resource to send the second CSI-RS generated according to the respective corresponding first scrambling ID in the same scheduling unit. Optionally, the coordinated TRP sets of the two UEs may both use the same third CSI-RS resource to transmit the third CSI-RS generated according to the respective corresponding first scrambling ID in the same scheduling unit. It is understood that reference may be made to the above for specific description of the second CSI-RS resource and the third CSI-RS resource, which are not detailed here.

For example, the cooperative TRP sets of the two UEs (e.g., UE1 and UE 2) are TRP1, TRP2 and TRP3, then TPR1 may transmit a first CSI-RS (e.g., CSI-RS1, and CSI-RS1 belongs to the first CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID1 corresponding to TRP1, and scrambling ID1 belongs to the first scrambling ID) to UE1 and UE2, respectively, on the first CSI-RS resource; TPR2 may transmit a first CSI-RS (e.g., CSI-RS2, and CSI-RS2 belongs to the first CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID2 corresponding to TRP2, and scrambling ID2 belongs to the first scrambling ID) to UE1 and UE2, respectively, on the first CSI-RS resource; the TPR3 may transmit a first CSI-RS (e.g., CSI-RS3, and CSI-RS3 belongs to the first CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID3 corresponding to TRP3, and scrambling ID3 belongs to the first scrambling ID) on the first CSI-RS resource to UE1 and UE2, respectively. Optionally, the TPR1 may transmit, to the UE1 and the UE2, a second CSI-RS (e.g., CSI-RS4, and CSI-RS4 belong to the second CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID1 corresponding to the TRP1, and scrambling ID1 belongs to the first scrambling ID) on the second CSI-RS resource, respectively; TPR2 may transmit second CSI-RSs (e.g., CSI-RS5, and CSI-RS5 belong to the second CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID2 corresponding to TRP2, and scrambling ID2 belongs to the first scrambling ID) to UE1 and UE2, respectively, on the second CSI-RS resource; the TPR3 may transmit second CSI-RSs (e.g., CSI-RS6, and CSI-RS6 belonging to the second CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID3 corresponding to TRP3, and scrambling ID3 belonging to the first scrambling ID) on the second CSI-RS resources to UE1 and UE2, respectively. It is understood that the description regarding multiple UEs may also refer to fig. 4.

In the embodiment of the application, the performance of channel estimation can be effectively improved in a CSI-RS resource repetition mode. The TRP in the cooperation TRP set of the UE repeatedly sends the CSI-RS, for example, the TRP sends the first CSI-RS, the second CSI-RS and the like, namely, the first CSI-RS and the second CSI-RS sent by the same TRP are sent to the UE through the same channel, so that the probability of demodulation errors of the terminal equipment can be effectively reduced, the demodulation performance of the terminal equipment is improved, and the channel estimation performance is improved.

Fig. 6 is a schematic flowchart of a resource allocation method according to an embodiment of the present application, and as shown in fig. 6, the method includes:

601. the network device determines configuration information, which includes information of a first CSI-RS resource corresponding to the plurality of first scrambling IDs.

Optionally, the configuration information may further include indication information of a plurality of second scrambling IDs. Optionally, the configuration information may further include indication information of a plurality of second scrambling IDs, indication information of a plurality of third scrambling IDs, and the like.

Optionally, the configuration information further includes information of one other CSI-RS resource, and each CSI-RS resource in the one other CSI-RS resource corresponds to the plurality of second scrambling IDs. For example, the configuration information includes information of a first CSI-RS resource corresponding to the plurality of first scrambling IDs, information of a second CSI-RS resource corresponding to the plurality of second scrambling IDs, and the like.

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

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

When the configuration information includes at least two CSI-RS resources, in order to enable a related device (e.g., a UE or a TRP) to explicitly learn an association relationship (which may also be referred to as a correspondence relationship, etc.) between each CSI-RS resource and a plurality of scrambling IDs corresponding to each CSI-RS resource, the embodiment of the present application further provides the following method:

method 1, each CSI-RS resource and indication information of a plurality of scrambling IDs corresponding to the CSI-RS resource are contained in the same cell. For example, the configuration information includes a first CSI-RS resource corresponding to the plurality of first scrambling IDs and a second CSI-RS resource corresponding to the plurality of second scrambling IDs. The indication information of the first CSI-RS resource and the plurality of first scrambling IDs may be contained in the same cell, and the indication information of the second CSI-RS resource and the plurality of second scrambling IDs may be contained in another cell.

By including each CSI-RS resource and a plurality of scrambling IDs corresponding to each CSI-RS resource in the same cell, the relevant device can know the corresponding relationship (also referred to as association relationship) between the CSI-RS resource and the scrambling ID.

Method 2, the configuration information includes information of each of the plurality of CSI-RS resources, indication information of the plurality of first scrambling IDs, and indication information of the plurality of second scrambling IDs. And, the information of each CSI-RS resource includes indexes of the plurality of first scrambling IDs or indexes of the plurality of second scrambling IDs. For example, the scrambling IDs corresponding to one CSI-RS resource may correspond to an index, and thus, the information of each of the at least two CSI-RS resources included in the configuration information may include an index corresponding to the scrambling IDs. For example, if the indexes of the plurality of first scrambling IDs corresponding to the first CSI-RS resource are index 1, and the indexes of the plurality of second scrambling IDs corresponding to the second CSI-RS resource are index 2, the information of the first CSI-RS resource may include index 1, and the information of the second CSI-RS resource may include index 2. Optionally, the indication information may include an identifier for indicating the CSI-RS resource.

Method 3, the configuration information includes information of each of the plurality of CSI-RS resources, indication information of the plurality of first scrambling IDs, and indication information of the plurality of second scrambling IDs. Alternatively, the order of the indication information may be determined according to the order of the CSI-RS resources. For example, the configuration information sequentially includes information of the first CSI-RS resource and information of the second CSI-RS resource, and the indication information may sequentially include a plurality of first scrambling IDs and a plurality of second scrambling IDs. 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 the embodiments of the present application.

It is understood that the first CSI-RS resource and the second CSI-RS resource shown above are only examples, and the configuration information may further include information of 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 cooperative TRP set of the UE, and the like, which is not limited in the embodiment of the present application. As for example in fig. 3, if the cooperative TRPs of a UE are TRP1, TRP3 and TRP4, three CSI-RS resources may be configured for the UE. That is, the CSI-RS resource required by the UE may be decided according to the size of the cooperative TRP set of the UE. In the above method, the second CSI-RS resource may be directly included in the configuration information, so that the second CSI-RS resource can be explicitly indicated, and the CSI-RS resource can be flexibly controlled.

It is understood that the above is exemplified by the configuration information including information of each of the plurality of CSI-RS resources, and a plurality of scrambling IDs corresponding to each CSI-RS resource. However, the configuration information further includes information of a first CSI-RS resource corresponding to the plurality of first scrambling IDs, indication information of the plurality of first scrambling IDs, and indication information of the plurality of second scrambling IDs.

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

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

Optionally, the network device may simultaneously transmit information of each CSI-RS resource in the multiple CSI-RS resources and multiple scrambling IDs corresponding to each CSI-RS resource. For example, the network device may simultaneously transmit information of the first CSI-RS resource, information of the second CSI-RS resource, indication information of a plurality of first scrambling IDs corresponding to the first CSI-RS resource, indication information of a plurality of second scrambling IDs corresponding to the second CSI-RS resource, and the like. Alternatively, the network device may also transmit information of each of the plurality of CSI-RS resources and indication information of a plurality of scrambling IDs corresponding to each CSI-RS resource, respectively. The embodiments of the present application do not limit this. When the network device separately transmits the information of the CSI-RS resources and the indication information, optionally, the information of each CSI-RS resource includes indexes of a plurality of scrambling IDs corresponding thereto; or, the indication information includes an identifier of the corresponding CSI-RS resource.

For specific description of step 601 and step 602, reference may be made to the above description, and detailed description is omitted here.

In one possible implementation, the method shown in fig. 6 further includes step 603.

603. And the terminal equipment acquires the second CSI-RS resource. And each TRP in the set of cooperating TRPs of the terminal device may also determine a second CSI-RS resource.

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

optionally, the terminal device may obtain the second CSI-RS resource according to the configuration information. For example, the configuration information includes information of the first CSI-RS resource, information of the second CSI-RS resource, indication information of the plurality of first scrambling IDs, and indication information of the plurality of second scrambling IDs. The terminal device may obtain the first CSI-RS resource and the second CSI-RS resource directly according to the configuration information.

Optionally, the configuration information may not include a second CSI-RS resource, and the second CSI-RS resource may be determined according to the first CSI-RS resource and the pattern (pattern); or, the number of the first CSI-RS resources and the scrambling IDs (e.g., 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 the plurality of first scrambling IDs, and indication information of the plurality of second scrambling IDs. The terminal device may determine a second CSI-RS resource from the first CSI-RS resource and the pattern. In this case, for example, the correspondence relationship between CSI-RS resources and scrambling IDs may be determined according to the order of indication information included in the configuration information. The configuration information includes the first CSI-RS resource, indication information of the plurality of first scrambling IDs, and indication information of the plurality of second scrambling IDs. If the second CSI-RS resource determined by the terminal device is a repetition of the first CSI-RS resource on the time domain resource, it may be sequentially determined that the multiple scrambling IDs corresponding to the first CSI-RS resource are the multiple first scrambling IDs according to the indication information of the multiple first scrambling IDs and the indication information of the multiple second scrambling IDs included in the configuration information, and the multiple scrambling IDs corresponding to the second CSI-RS resource are the multiple second scrambling IDs.

It is 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 receives a plurality of CSI-RSs respectively according to a plurality of CSI-RS resources and a plurality of scrambling IDs, each CSI-RS resource in the plurality of CSI-RS resources corresponds to a plurality of CSI-RSs, each CSI-RS resource in the plurality of CSI-RS resources corresponds to a plurality of scrambling IDs, and different CSI-RS resources correspond to different scrambling IDs. For example, the UE receives a plurality of first CSI-RSs from the plurality of TRPs according to the first CSI-RS resources and the plurality of first scrambling IDs, and receives 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. Wherein one first scrambling ID corresponds to one first CSI-RS and one second scrambling ID corresponds to one second CSI-RS.

Illustratively, the cooperative TRPs of the UE are TRP1, TRP2 and TRP3, and the UE may receive CSI-RS1_1 belonging to the first CSI-RS sent by the TRP1, CSI-RS1_2 belonging to the first CSI-RS sent by the TRP2 and CSI-RS1_3 belonging to the first CSI-RS sent by the TRP3, respectively. And the UE can also respectively receive the CSI-RS2_1 which is sent by the TRP1 and belongs to the second CSI-RS, the CSI-RS2_2 which is sent by the TRP2 and belongs to the second CSI-RS and the CSI-RS2_3 which is sent by the TRP3 and belongs to the second CSI-RS. For example, the plurality of first scramble IDs are scramble ID1, scramble ID2, and scramble ID3, respectively, and the plurality of second scramble IDs are scramble ID4, scramble ID5, and scramble ID6, respectively. The UE may receive the CSI-RS1_1 from the TRP1 according to the first CSI-RS resource and the scrambling ID1, the CSI-RS1_2 from the TRP2 according to the first CSI-RS resource and the scrambling ID2, and the CSI-RS1_3 from the TRP3 according to the first CSI-RS resource and the scrambling ID3. And, the UE may also receive CSI-RS2_1 from TRP1 according to the second CSI-RS resource and scrambling ID4, CSI-RS2_2 from TRP2 according to the second CSI-RS resource and scrambling ID5, and CSI-RS2_3 from TRP3 according to the second CSI-RS resource and scrambling ID6.

It is understood that the second CSI-RS resource is only exemplarily shown above, and a third CSI-RS resource may also be included in the embodiments of the present application. Thereby, the terminal device may also obtain the third CSI-RS resource. The third CSI-RS resource corresponds to a plurality of third scrambling IDs. For example, 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 may be determined according to the second CSI-RS resource and the pattern. For example, the terminal device may receive a plurality of third CSI-RSs from the plurality of TRPs according to the third CSI-RS resource and the plurality of third scrambling IDs. For example, if the number of TRPs in the cooperative TRP set of the UE is 3, for the same TRP, the UE may receive a first CSI-RS sent on a first CSI-RS resource, a second CSI-RS sent on a second CSI-RS resource, and a third CSI-RS sent on a third CSI-RS resource of the same TRP, respectively. Meanwhile, the pilot frequency sequence of the first CSI-RS is generated according to a first scrambling ID of the same TRP, the pilot frequency sequence of the second CSI-RS is generated according to a second scrambling ID of the same TRP, and the pilot frequency sequence of the third CSI-RS is generated according to a third scrambling ID of the same TRP.

In one possible implementation, the method shown in fig. 6 further includes:

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

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

In one possible implementation, the method shown in fig. 6 further includes:

the terminal device sends capability information to the network device, and the capability information can be used for indicating any one or more of the following items: the number of supported scrambling IDs, the type of supported patterns, the duration over which channel estimation is performed, the number of supported scrambling IDs on a frequency domain unit, whether a joint sequence of multiple symbols is supported, or whether joint channel estimation is supported. Correspondingly, the network device receives the capability information.

It is understood that the capability information shown in the embodiments of the present application is not shown in fig. 6, but should not be construed as limiting the embodiments of the present application.

It can be understood that the method provided by the embodiment of the present application may be applied to one UE, that is, different TRPs in a coordinated TRP set of one UE transmit first CSI-RSs generated according to respective corresponding first scrambling IDs using the same time-frequency resources. Or, may also be applied to multiple UEs. For example, when the method provided by the embodiment of the present application is applied to multiple UEs, if the sets of cooperative TRPs of two UEs in the multiple UEs are the same, in this case, the sets of cooperative TRPs of the two UEs may both use the same first CSI-RS resource to transmit the first CSI-RS generated according to the respectively corresponding first scrambling ID in the same scheduling unit. Optionally, the coordinated TRP sets of the two UEs may both use the same second CSI-RS resource to send the second CSI-RS generated according to the respective corresponding second scrambling ID in the same scheduling unit. Optionally, the coordinated TRP sets of the two UEs may both use the same third CSI-RS resource to transmit the third CSI-RS generated according to the respective corresponding third scrambling ID in the same scheduling unit. It is understood that specific descriptions regarding the second CSI-RS resource and the third CSI-RS resource may be referred to above and will not be described in detail herein.

For example, the cooperative TRP sets of the two UEs (e.g., UE1 and UE 2) are TRP1, TRP2 and TRP3, then TPR1 may transmit a first CSI-RS (e.g., CSI-RS1, and CSI-RS1 belongs to the first CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID1 corresponding to TRP1, and scrambling ID1 belongs to the first scrambling ID) to UE1 and UE2, respectively, on the first CSI-RS resource; TPR2 may transmit a first CSI-RS (e.g., CSI-RS2, and CSI-RS2 belongs to the first CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID2 corresponding to TRP2, and scrambling ID2 belongs to the first scrambling ID) to UE1 and UE2, respectively, on the first CSI-RS resource; the TPR3 may transmit a first CSI-RS (e.g., CSI-RS3, and CSI-RS3 belongs to the first CSI-RS) generated according to the first scrambling ID (i.e., scrambling ID3 corresponding to TRP3, and scrambling ID3 belongs to the first scrambling ID) on the first CSI-RS resource to UE1 and UE2, respectively. Optionally, TPR1 may transmit a second CSI-RS (e.g., CSI-RS4, and CSI-RS4 belongs to the second CSI-RS) generated according to a second scrambling ID (i.e., scrambling ID4 corresponding to TRP1, and scrambling ID4 belongs to the second scrambling ID) to UE1 and UE2, respectively, on a second CSI-RS resource; the TPR2 may transmit, to the UE1 and the UE2, a second CSI-RS (e.g., CSI-RS5, and CSI-RS5 belonging to the second CSI-RS) generated according to the second scrambling ID (i.e., scrambling ID5 corresponding to the TRP2, and scrambling ID5 belonging to the second scrambling ID) on the second CSI-RS resource, respectively; the TPR3 may transmit second CSI-RSs (e.g., CSI-RSs 6, and CSI-RSs 6 belong to the second CSI-RSs) generated according to the second scrambling ID (i.e., scrambling ID6 corresponding to TRP3, and scrambling ID6 belongs to the first scrambling ID) on the second CSI-RS resources to UE1 and UE2, respectively. It is understood that the description regarding multiple UEs may also refer to fig. 4.

It is understood that, with respect to the method shown in fig. 6, reference may be made to fig. 5a or fig. 4, etc., and the embodiments of the present application are not described in detail.

In the embodiment of the application, the configuration information comprises information of at least two CSI-RS resources, and each CSI-RS resource corresponds to a plurality of different scrambling IDs. Therefore, the TRP in the cooperation TRP set of the UE repeatedly sends the CSI-RS, for example, the TRP sends the first CSI-RS, the second CSI-RS and the like, the first CSI-RS and the second CSI-RS sent by the same TRP are 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, the difference between the pilot sequences generated according to different scrambling IDs is large, the probability of demodulation errors of the terminal equipment can be further reduced, the demodulation performance of the terminal equipment is improved, and the channel estimation performance is improved.

It can be understood that the method disclosed by the application can be applied to not only the CSI-RS with a single port, but also the CSI-RS with multiple ports. It can be understood that the single-port CSI-RS means that the pilot sequence of the CSI-RS is generated and then transmitted through one port of one TRP. The multi-port CSI-RS refers to that after the pilot frequency sequence of the CSI-RS is generated, the CSI-RS is transmitted through a plurality of ports of one TRP. In the method shown in the embodiment of the application, multiple ports of the same TRP can all use the same time-frequency resource to transmit the CSI-RS. For example, the cooperating TRP set of the UE includes TRP1, TRP2, and TRP3, then TRP1 may transmit a first CSI-RS (e.g., CSI-RS1, and CSI-RS1 belongs to the first CSI-RS) through the plurality of ports according to a first scrambling ID (i.e., scrambling ID1 to which TRP1 corresponds, and scrambling ID1 belongs to the first scrambling ID), TRP2 may transmit a first CSI-RS (e.g., CSI-RS2, and CSI-RS2 belongs to the first CSI-RS) through the plurality of ports according to a first scrambling ID (i.e., scrambling ID2 to which TRP2 corresponds, and scrambling ID2 belongs to the first scrambling ID) on the first CSI-RS resource, TRP3 may transmit a first CSI-RS (e.g., CSI-RS3, and scrambling ID3 belongs to the first CSI-RS) through the plurality of ports according to the first scrambling ID (i.e., scrambling ID3 to which TRP1 corresponds, and scrambling ID1 belongs to the first CSI-RS). It is understood that specific descriptions about the repeated transmission of the multi-port CSI-RS may refer to fig. 5a, fig. 6, etc., and will not be described in detail herein.

The following will describe a communication apparatus provided in an embodiment of the present application.

The present application divides the communication device into functional modules according to the above method embodiments, for example, each functional module may be divided according to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the present application is schematic, and is only one logic function division, and there may be another division manner in actual implementation. The communication apparatus of the embodiment of the present application will be described in detail below with reference to fig. 7 to 9.

Fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application, and 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 shown above or a chip in the terminal device, or the like. I.e. the communication means may be adapted to perform the steps or functions, etc. performed by the terminal device in the above method embodiments.

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

the transceiving unit 702 is further configured to receive a plurality of first CSI-RSs from the plurality of TRPs according to the first CSI-RS resources and the plurality of first scrambling IDs, wherein 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, the processing unit 701 may input, through the transceiver unit 702, a plurality of first CSI-RSs according to the first CSI-RS resources and the plurality of first scrambling IDs, and then perform channel estimation according to the plurality of first CSI-RSs. The embodiment of the present application does not limit the specific manner 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 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, where 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 a plurality of second scrambling IDs, where the plurality of 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 a plurality of second CSI-RSs from the plurality of TRPs according to the second CSI-RS resource and a plurality of second scrambling IDs, one second scrambling ID being used for one TRP to generate one second CSI-RS.

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

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

In the embodiment of the present application, reference may also be made to the description in the above method embodiments (including fig. 4, fig. 5a, and fig. 6) for the description on the configuration information, the first scrambling ID, the first CSI-RS resource, the second scrambling ID, and the like, and a detailed description is not repeated here. It is understood that the specific descriptions of the transceiver unit and the processing unit shown in the embodiments of the present application are only examples, and for specific functions or steps executed by the transceiver unit and the processing unit, etc., reference may be made to the above method embodiments, and detailed descriptions thereof are omitted here.

Referring to fig. 7, in other embodiments of the present application, the communication device may be the network device or the chip in the network device shown above. I.e. the communication means may be adapted to perform the steps or functions etc. performed by the network device in the above method embodiments. Illustratively, the network device may include a base station for controlling the coordinated TRP set, or a control node in the coordinated TRP set. For convenience of understanding, the embodiments of the present application will be described below by taking a network device as a control node, that is, one TRP in a cooperative TRP set of a UE as an example.

A processing unit 701, configured to determine configuration information, where the configuration information includes information of a first CSI-RS resource, and the first CSI-RS resource corresponds to a plurality of first scrambling identifiers ID;

a transceiving unit 702, configured to send configuration information.

In a possible implementation manner, the transceiving unit 702 is further configured to transmit 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 a second CSI-RS resource; a transceiver unit 702, further configured to transmit a second CSI-RS according to the second CSI-RS resource and the first scrambling ID; alternatively, the transceiving unit 702 is further configured to transmit the second CSI-RS according to the second CSI-RS resource and the 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 manner, the transceiving 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 type of supported patterns, or the duration of channel estimation.

In the embodiment of the present application, reference may also be made to the descriptions in the above method embodiments (including fig. 4, fig. 5a, and fig. 6) for the description of the configuration information, the first scrambling ID, the first CSI-RS resource, the second scrambling ID, and the like, and details are not described here. It is understood that the specific descriptions of the transceiver unit and the processing unit shown in the embodiments of the present application are only examples, and for the specific functions or steps executed by the transceiver unit and the processing unit, etc., reference may be made to the above-mentioned method embodiments, and detailed descriptions thereof are omitted here.

For example, 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 apparatus is a terminal device, the terminal device may process the first CSI-RS or the second CSI-RS, etc. through the pilot processing component, and perform channel estimation, etc. through the data processing component.

The network device and the terminal device according to the embodiments of the present application are introduced above, and possible product forms of the network device and the terminal device are introduced below. It should be understood that any product having the functions of the network device described in fig. 7 or any product having the functions of the terminal device described in fig. 7 may fall within the scope of the embodiments of the present application. It should be further understood that the following description is only by way of example, and does not limit the product form of the network device and the terminal device according to the embodiments of the present application.

In one possible implementation manner, in the communication apparatus 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 transmitting unit and a receiving unit, where the transmitting unit may be a transmitter and the receiving unit may be a receiver, and the transmitting 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 between 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.

Illustratively, when the communication apparatus is configured to perform the steps or methods or functions performed by the terminal device, the transceiver 810 is configured to receive configuration information, a plurality of first CSI-RSs (or also a plurality of second CSI-RSs, etc.); a processor 820 configured to perform channel estimation according to the plurality of first CSI-RSs, etc.

Illustratively, when the communication apparatus is configured to perform the steps or methods or functions performed by the network device (e.g., a control node or a base station, etc.), the processor 820 is configured to determine configuration information; a transceiver 810 for transmitting the configuration information (or also for transmitting the first CSI-RS or the second CSI-RS, etc.).

In the embodiment of the present application, reference may also be made to the description in the above method embodiments (including fig. 4, fig. 5a, and fig. 6) for the description on the configuration information, the first scrambling ID, the first CSI-RS resource, the second scrambling ID, and the like, and a detailed description is not repeated here. It is understood that the detailed description of the processor and the transceiver may refer to the description of the processing unit and the transceiver unit shown in fig. 7, and will not be described herein again.

In various implementations of the communications apparatus shown in fig. 8, the transceiver may include a receiver for performing a receiving function (or operation) and a transmitter for performing a transmitting function (or operation). And transceivers are used for communicating with other devices/apparatuses over a transmission medium.

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

The specific connection medium among the transceiver 810, the processor 820 and the memory 830 is not limited in the embodiments of the present application. In fig. 8, the memory 830, the processor 820 and the transceiver 810 are connected by a bus 840, the bus is represented by a thick line in fig. 8, and the connection manner among other components is only schematically illustrated and is not limited. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 8, but this is not intended to represent only one bus or type of bus.

In the embodiments of the present application, the processor may be a general 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, or the like, which can implement or execute the methods, steps, and logic blocks 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 method 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 a processor.

In the embodiment of the present application, the Memory may include, but is not limited to, a nonvolatile Memory such as a hard disk (HDD) or a solid-state drive (SSD), a Random Access Memory (RAM), an Erasable Programmable Read Only Memory (EPROM), a Read-Only Memory (ROM), or a portable Read-Only Memory (CD-ROM). The memory is any storage medium that can be used to carry or store program code in the form of instructions or data structures and that can be read and/or written by a computer (e.g., a communications device, etc., as shown herein), but is not limited to such. The memory in the embodiments of the present application may also be circuitry or any other device capable of performing a storage function for storing program instructions and/or data.

Illustratively, the processor 820 is mainly used for processing communication protocols and communication data, controlling the whole communication device, executing software programs and processing data of the software programs. The memory 830 is used primarily for storing software programs and data. The transceiver 810 may include a control circuit and an antenna, the control circuit being mainly used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by users and outputting data to the users.

When the communication device is powered 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 outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is transmitted to the communication device, the rf circuit receives an rf signal through the antenna, converts the rf 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.

In another implementation, the rf circuit and antenna may be provided independently of the processor performing baseband processing, for example in a distributed scenario, the rf circuit and antenna may be in a remote arrangement independent of the communication device.

It is understood that the communication device shown in the embodiment of the present application may further have more components than those shown in fig. 8, and the embodiment of the present application is not limited thereto. The methods performed by the processors and transceivers shown above are examples only, and reference may be made to the methods described above for the steps specifically performed by the processors and transceivers.

In another possible implementation manner, in the communication device shown in fig. 7, the processing unit 701 may be one or more logic circuits, and the transceiving unit 702 may be an input/output interface, which is also referred to as a communication interface, or an interface circuit, or an interface, and so on. Or the transceiving unit 702 may also be a transmitting unit and a receiving unit, the transmitting unit may be an output interface, the receiving unit may be an input interface, and the transmitting unit and the receiving unit are integrated into one unit, such as an input-output interface. As shown in fig. 9, the communication apparatus shown in fig. 9 includes a logic circuit 901 and an interface 902. That is, the processing unit 701 may be implemented by a logic circuit 901, and the transceiver unit 702 may be implemented by an interface 902. The logic circuit 901 may be a chip, a processing circuit, an integrated circuit or a system on chip (SoC) chip, and the interface 902 may be a communication interface, an input/output interface, a pin, and the like. Illustratively, fig. 9 exemplifies the communication device as a chip, and the chip includes a logic circuit 901 and an interface 902.

In the embodiments of the present application, the logic circuit and the interface may also be coupled to each other. The embodiments of the present application are not limited to the specific connection manner of the logic circuit and the interface.

Illustratively, when the communication device is configured to perform the method or function or step performed by the terminal device, the interface 902 is configured to input the configuration information and the plurality of first CSI-RSs; a logic circuit 901 configured to perform channel estimation according to the plurality of first CSI-RSs.

Illustratively, when the communication device is configured to perform a method or a function or a step performed by the network device, the logic circuit 901 is configured to determine configuration information; an interface 902 for outputting the configuration information (or also for outputting the first CSI-RS or the second CSI-RS, etc.).

It is 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, and the embodiment of the present application is not limited thereto.

In the embodiment of the present application, reference may also be made to the descriptions in the above method embodiments (including fig. 4, fig. 5a, and fig. 6) for the description of the configuration information, the first scrambling ID, the first CSI-RS resource, the second scrambling ID, and the like, and details are not described here.

The embodiment of the present application further provides a wireless communication system, which includes a network device and a terminal device, and the network device and the terminal device may be configured to perform the method in any of the foregoing embodiments (including fig. 4, fig. 5a, and fig. 6).

In addition, the present application also provides a computer-readable storage medium having computer code stored therein, which when run on a computer, causes the computer to perform the operations and/or processes performed by the network device in the methods provided herein.

The present application also provides a computer-readable storage medium having stored therein computer code, which, when run on a computer, causes the computer to perform the operations and/or processes performed by the terminal device in the methods provided herein.

The present application also provides a computer program product comprising computer code or a computer program which, when run on a computer, causes the operations and/or processes performed by the network device in the methods provided herein to be performed.

The present application also provides a computer program product comprising computer code or a computer program which, when run on a computer, causes the operations and/or processes performed by the terminal device in the methods provided herein to be performed.

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

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the technical effects of the solutions provided by the embodiments of the present application.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a readable storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned readable storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

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

Claims

1. A method for resource allocation, the method comprising:

receiving configuration information of a channel state information reference signal (CSI-RS), wherein the configuration information comprises information of a first CSI-RS resource, and the first CSI-RS resource corresponds to a plurality of first scrambling identification IDs;

receiving a plurality of first CSI-RSs from a plurality of Transmission Reception Points (TRPs) according to the first CSI-RS resource and the plurality of first scrambling IDs, one first scrambling ID for one TRP to generate one first CSI-RS.

2. The method of claim 1, further comprising:

and performing channel estimation according to the plurality of first CSI-RSs.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

acquiring a second CSI-RS resource;

receiving 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 for one of the TRPs to generate one of the second CSI-RSs.

4. The method of claim 1 or 2, wherein the configuration information further comprises information indicative of a plurality of second scrambling IDs, the plurality of second scrambling IDs corresponding to second CSI-RS resources, the method further comprising:

acquiring a second CSI-RS resource;

receiving a plurality of second CSI-RSs from the plurality of TRPs according to the second CSI-RS resource and the plurality of second scrambling IDs, one for one of the TRPs to generate one of the second CSI-RSs.

5. The method of claim 3 or 4, wherein the second CSI-RS resource is determined according to the first CSI-RS resource and a pattern.

6. The method according to claim 3 or 4, wherein the configuration information further comprises information of the second CSI-RS resource.

7. The method according to any of claims 2-6, wherein the performing channel estimation according to the plurality of first CSI-RSs comprises:

and performing channel estimation according to the plurality of first CSI-RSs and the plurality of second CSI-RSs.

8. The method according to any one of claims 1-7, further comprising:

sending capability information to a network device, the capability information indicating any one or more of: a number of the first scrambling IDs supported, a pattern type supported, or a duration of performing channel estimation.

9. A method for resource allocation, the method comprising:

determining configuration information, wherein the configuration information comprises information of a first channel state information reference signal (CSI-RS) resource, and the first CSI-RS resource corresponds to a plurality of first scrambling Identifiers (IDs);

and sending the configuration information.

10. The method of claim 9, further comprising:

and transmitting the first CSI-RS according to the first CSI-RS resource and the first scrambling ID.

11. The method of claim 10, further comprising:

determining a second CSI-RS resource;

transmitting a second CSI-RS according to the second CSI-RS resource and the first scrambling ID; alternatively, the first and second electrodes may be,

and transmitting a second CSI-RS according to the second CSI-RS resource and a second scrambling ID, wherein the second scrambling ID is contained in the configuration information.

12. The method of claim 11, wherein the determining the second CSI-RS resource comprises:

determining the second CSI-RS resource according to the first CSI-RS resource and the pattern.

13. The method of claim 11, wherein the configuration information further comprises information of the second CSI-RS resource.

14. The method according to any one of claims 9-13, further comprising:

receiving capability information from a terminal device, the capability information indicating any one or more of: a number of the first scrambling IDs supported, a pattern type supported, or a duration of performing channel estimation.

15. A communications apparatus, the apparatus comprising:

the receiving and sending unit is used for receiving configuration information of a channel state information reference signal (CSI-RS), wherein the configuration information comprises information of a first CSI-RS resource, and the first CSI-RS resource corresponds to a plurality of first scrambling identification IDs;

the transceiver unit is further configured to receive a plurality of first CSI-RSs from a plurality of transmission reception points TRP according to the first CSI-RS resource and the plurality of first scrambling IDs, where one first scrambling ID is used for one TRP to generate one first CSI-RS.

16. The apparatus of claim 15, further comprising:

a processing unit, configured to perform channel estimation according to the plurality of first CSI-RSs.

17. The apparatus of claim 15 or 16, further comprising:

a processing unit, configured to acquire 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 resources and the plurality of first scrambling IDs, one first scrambling ID being used for one TRP to generate one second CSI-RS.

18. The apparatus of claim 15 or 16, wherein the configuration information further comprises information indicative of a plurality of second scrambling IDs, the plurality of second scrambling IDs corresponding to second CSI-RS resources, the apparatus further comprising:

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 resource and the plurality of second scrambling IDs, one second scrambling ID being used for one TRP to generate one second CSI-RS.

19. The apparatus of claim 17 or 18, wherein the second CSI-RS resource is determined according to the first CSI-RS resource and a pattern.

20. The apparatus of claim 17 or 18, wherein the configuration information further comprises information of the second CSI-RS resource.

21. The apparatus of any one of claims 15-20,

the processing unit is specifically configured to perform channel estimation according to the plurality of first CSI-RSs and the plurality of second CSI-RSs.

22. The apparatus of any one of claims 15-21,

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

23. A communications apparatus, the apparatus comprising:

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

and the transceiving unit is used for sending the configuration information.

24. The apparatus of claim 23,

the transceiver unit is further configured to transmit a first CSI-RS according to the first CSI-RS resource and the first scrambling ID.

25. The apparatus of claim 23 or 24,

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

the transceiver unit is further configured to transmit a second CSI-RS according to the second CSI-RS resource and the first scrambling ID; alternatively, the first and second liquid crystal display panels may be,

the transceiver unit is further configured to transmit 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.

26. The apparatus of claim 25, wherein the processing unit is specifically configured to determine the second CSI-RS resource according to the first CSI-RS resource and a pattern.

27. The apparatus of claim 25, wherein the configuration information further comprises information for a second CSI-RS resource.

28. The apparatus of any one of claims 23-27,

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

29. A communication device comprising a processor and a memory;

the processor is used for storing computer execution instructions;

the processor is configured to execute the computer-executable instructions to cause the method of any one of claims 1-8 to be performed; or to cause the method of any of claims 9-14 to be performed.

30. A communication device comprising a logic circuit and an interface, the logic circuit and interface being coupled;

the interface is used for inputting and/or outputting code instructions, and the logic circuit is used for executing the code instructions so as to cause the method of any one of claims 1-8 to be executed; or to cause the method of any one of claims 9-14 to be performed.

31. A computer-readable storage medium for storing a computer program which, when executed, performs the method of any one of claims 1-8; alternatively, the method of any one of claims 9-14 is performed.