WO2024032310A1

WO2024032310A1 - Communication method and apparatus

Info

Publication number: WO2024032310A1
Application number: PCT/CN2023/107039
Authority: WO
Inventors: 韩小江; 王妮
Original assignee: 华为技术有限公司
Priority date: 2022-08-12
Filing date: 2023-07-12
Publication date: 2024-02-15
Also published as: CN117676874A

Abstract

A communication method and apparatus. The method comprises: a terminal device receives an association relationship between a plurality of SSBs and a plurality of RS resources from a network device, the association relationship between the plurality of SSBs and the plurality of RS resources comprising an association relationship between a second SSB and the RS resources; if the terminal device switches from a first SSB to the second SSB, the terminal device determines, according to the association relationship between the second SSB and the RS resources, an RS resource associated with the second SSB; and the terminal device receives an RS from the network device according to the RS resource associated with the second SSB. According to embodiments of the present application, according to a pre-received association relationship, a terminal device can determine an RS resource associated with a second SSB. Thus, on one hand, signaling interactions between a terminal device and a network device can be reduced, thereby saving resources and reducing the probability of channel congestion; on the other hand, the delay for the terminal device to acquire an RS resource is reduced, thereby improving the communication efficiency.

Description

Communication methods and devices

This application claims priority to the Chinese patent application filed with the China Patent Office on August 12, 2022, with the application number 202210965459.X and the application title "Communication Method and Device", the entire content of which is incorporated into this application by reference.

Technical field

The embodiments of the present application relate to the field of communication technology, and more specifically, to a communication method and device.

Background technique

There are two types of beams in communication systems. One type is synchronization signal/physical broadcast channel block ((synchronization signal, SS)/(physical broadcast channel, PBCH) block, SSB) beam, which can also be called broadcast beam; the other type is It is a reference signal (RS) beam, which can also be called a signal beam.

Currently, if the SSB where the terminal device is located is switched, the network device can reconfigure the RS resources associated with the switched SSB to the terminal device. Therefore, if the SSB where the terminal device is located undergoes frequent switching, signaling interactions between the terminal device and the network device will be relatively frequent, resulting in a lot of overhead.

Therefore, how to reduce the signaling overhead of network equipment configuring SSB-related RS resources to terminal equipment is an issue that needs to be solved urgently.

Contents of the invention

Embodiments of the present application provide a communication method and device, which can reduce the signaling overhead of network equipment configuring SSB-associated RS resources to terminal equipment.

In the first aspect, a communication method is provided, including:

The terminal device receives an association between multiple SSBs and multiple RS resources from the network device, where the association between the multiple SSBs and the multiple RS resources includes an association between the second SSB and the RS resource; if The terminal device switches from the first SSB to the second SSB, and the terminal device determines the RS resource associated with the second SSB according to the association relationship between the second SSB and the RS resource; The terminal device receives the RS from the network device according to the RS resource associated with the second SSB.

According to the embodiment of the present application, the terminal device has pre-received the association relationships between multiple SSBs and multiple RS resources from the network device. If the terminal device switches to the second SSB, the terminal device can determine the association relationship of the second SSB based on the pre-received association relationships. RS resources. Compared with each time the terminal device performs SSB handover, the network device reconfigures the RS resources associated with the switched SSB to the terminal device. Based on the embodiments of the present application, on the one hand, the signaling between the terminal device and the network device can be reduced. Interaction, thereby saving resources and reducing the probability of channel congestion. On the other hand, it can also reduce the delay for terminal equipment to obtain RS resources and improve communication efficiency.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the terminal device sending the measurement result for the RS to the network device.

Exemplarily, in channel state measurement and beam measurement scenarios, the terminal device sends the measurement result for the RS to the network device.

In conjunction with the first aspect, in some implementations of the first aspect, the method further includes:

The terminal device autonomously determines to switch from the first SSB to the second SSB.

According to the embodiment of the present application, the terminal device determines whether the SSB where it is located is switched by itself, which can further reduce the signaling interaction between the terminal device and the network device.

The terminal device receives first information from the network device, and the first information instructs the terminal device to switch from the first SSB to the second SSB.

According to the embodiment of the present application, compared with the terminal device independently determining to perform SSB switching, the network device instructs the terminal device to perform SSB switching, which can reduce the processing complexity of the terminal device.

With reference to the first aspect, in some implementations of the first aspect, the association between the plurality of SSBs and the plurality of RS resources is carried in radio resource control (RRC) signaling.

According to the embodiment of the present application, considering that the number of bits of downlink control information (DCI) and media access control control element (MAC CE) signaling is limited, and the DCI signaling and MAC CE signaling This makes it more suitable for carrying some information that changes quickly. Since the amount of information on the above-mentioned association relationship may be large and may not change for a long period of time, the embodiment of this application uses RRC signaling to the terminal device. Send the above association.

In the second aspect, a communication method is provided, including:

The network device determines the association between the multiple SSBs and the multiple RS resources based on the coverage ranges of the multiple SSBs and the coverage areas of the multiple RS beams, and the multiple RS beams correspond to the multiple RS resources; The network device sends the association relationship between the multiple SSBs and the multiple RS resources to the terminal device, where the association relationship between the multiple SSBs and the multiple RS resources includes an association between the second SSB and the RS resource. Relationship; the network device sends RS according to the RS resource associated with the second SSB.

According to the embodiment of the present application, the network device sends the association relationships between multiple SSBs and multiple RS resources to the terminal device in advance. If the terminal device switches to the second SSB, the terminal device can determine the association relationship of the second SSB based on the pre-received association relationship. RS resources. Compared with each time the terminal device performs SSB handover, the network device reconfigures the RS resources associated with the switched SSB to the terminal device. Based on the embodiments of the present application, on the one hand, the signaling between the terminal device and the network device can be reduced. Interaction, thereby saving resources and reducing the probability of channel congestion. On the other hand, it can also reduce the delay for terminal equipment to obtain RS resources and improve communication efficiency.

Combined with the second aspect, in some implementations of the second aspect, the method further includes:

The network device autonomously determines to switch the terminal device from the first SSB to the second SSB;

The network device sends first information to the terminal device, where the first information instructs the terminal device to switch from the first SSB to the second SSB.

According to the embodiments of the present application, compared with the terminal device independently determining to perform SSB switching, the network device instructs the terminal device to perform SSB switching, which can reduce the processing complexity of the terminal device.

The network device receives the measurement result for the RS from the terminal device.

With reference to the second aspect, in some implementations of the second aspect, associations between the plurality of SSBs and the plurality of RS resources are carried in RRC signaling.

The third aspect provides a communication device. The communication device may be the terminal equipment of the first aspect, or may be a device in the terminal equipment (for example, a chip, or a chip system, or a circuit), or may be matched with the terminal equipment. device used.

In a possible implementation, the communication device may include modules or units that perform one-to-one correspondence with the methods/operations/steps/actions described in the first aspect. The modules or units may be hardware circuits, software, or It can be implemented by hardware circuit combined with software.

In a possible implementation, the communication device includes: a transceiver unit and a processing unit connected to the transceiver unit. A transceiver unit configured to receive association relationships between multiple SSBs and multiple RS resources from the network device, where the association relationships between the multiple SSBs and the multiple RS resources include an association between the second SSB and the RS resource. relationship; if the terminal device switches from the first SSB to the second SSB, the processing unit is configured to determine the RS associated with the second SSB according to the association relationship between the second SSB and the RS resource. Resources; the transceiver unit is configured to receive RS from the network device according to the RS resource associated with the second SSB.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is configured to send the measurement result for the RS to the network device.

In conjunction with the third aspect, in some implementations of the third aspect, the processing unit is configured to autonomously determine to switch from the first SSB to the second SSB.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is configured to receive first information from the network device, the first information instructs the terminal device to switch from the first SSB to the second SSB.

With reference to the third aspect, in some implementations of the third aspect, the association relationships between the plurality of SSBs and the plurality of RS resources are carried in RRC signaling.

The fourth aspect provides a communication device. The communication device may be the network device of the second aspect, or may be a device in the network device (for example, a chip, or a chip system, or a circuit), or may be matched with the network device. device used.

In a possible implementation, the communication device may include modules or units that perform one-to-one correspondence with the methods/operations/steps/actions described in the second aspect. The modules or units may be hardware circuits, software, or It can be implemented by hardware circuit combined with software.

In a possible implementation, the communication device includes: a transceiver unit and a processing unit connected to the transceiver unit. A processing unit configured to determine the association between the multiple SSBs and the multiple RS resources based on the coverage ranges of the multiple SSBs and the coverage ranges of the multiple RS beams, The plurality of RS beams correspond to the plurality of RS resources; a transceiver unit is configured to send to the terminal device the association between the plurality of SSBs and the plurality of RS resources, where the plurality of SSBs and the plurality of RS resources are associated with each other. The association relationship between multiple RS resources includes the association relationship between the second SSB and the RS resource; the transceiver unit is configured to send RS according to the RS resource associated with the second SSB.

With reference to the fourth aspect, in some implementations of the fourth aspect, the processing unit is configured to independently determine to switch the terminal device from the first SSB to the second SSB; and the transceiver unit is configured to The terminal device sends first information, and the first information instructs the terminal device to switch from the first SSB to the second SSB.

In conjunction with the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is configured to receive a measurement result for the RS from the terminal device.

With reference to the fourth aspect, in some implementations of the fourth aspect, associations between the plurality of SSBs and the plurality of RS resources are carried in RRC signaling.

In a fifth aspect, a communication device is provided, including a communication interface and a processor, the communication interface is used to output and/or input signals, and the processor is used to execute computer programs or instructions stored in a memory, so that the communication device executes the first The method in any possible implementation manner in one aspect; or, causing the communication device to perform the method in any possible implementation manner in the second aspect.

Optionally, the memory may be included in the communication device. As a way, the memory may be provided separately from the processor; as another way, the memory may be located in the processor and integrated with the processor.

Optionally, the memory may also be external to the communication device and coupled to the processor.

A sixth aspect provides a computer-readable storage medium, including a computer program. When the computer program is run on a computer, it causes the computer to execute the method in any possible implementation of the first aspect, or causes the computer to execute the second aspect. method in any of the possible implementations.

A seventh aspect provides a chip or chip system. The chip or chip system includes a processing circuit and an input/output interface. The processing circuit is used to execute the method in any possible implementation of the first aspect; or, the processing circuit is used to Execute the method in any possible implementation manner of the second aspect. Input and output interfaces are used to input and/or output signals.

In an eighth aspect, a computer program product is provided. The computer program product includes: a computer program (which can also be called a code, or an instruction). When the computer program is run, it causes the computer to execute any of the possible implementation methods in the first aspect. The method in; or, causing the computer to execute the method in any possible implementation manner of the second aspect.

A ninth aspect provides a communication system, including terminal equipment and network equipment. The terminal device is used to perform the method in any possible implementation manner of the first aspect. The network device is used to perform the method in any possible implementation manner of the second aspect.

Description of drawings

Figure 1 shows a communication system to which this application is applicable.

Figure 2 is a schematic interaction diagram of the method proposed in this application.

Figure 3 is a schematic interaction diagram of the method proposed in this application.

Figure 4 is a schematic interaction diagram of the method proposed in this application.

Figure 5 is a schematic interaction diagram of the method proposed in this application.

Figure 6 is a schematic block diagram of the communication device provided by this application.

Figure 7 is a schematic block diagram of the communication device provided by this application.

Detailed ways

The technical solutions of the embodiments of this application can be applied to various third generation partnership project (3GPP) communication systems, such as: long term evolution (long term evolution, LTE) systems, such as LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (TDD), fifth generation (5th generation, 5G) communication system, also known as new wireless (new radio, NR) communication system, future evolved communication Systems, such as: sixth generation (6G) communication systems, etc.

It should be understood that the term "and/or" in this article is only an association relationship describing related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, and A and B exist simultaneously. , there are three situations of B alone. In addition, the symbol "/" appearing in this application may mean "and/or", for example, A/B means A and/or B.

It should be understood that in the embodiment of the present application, "A corresponds to B" means that A is associated with B, and B can be determined based on A. But it should be reasonable Solution: Determining B based on A does not mean determining B only based on A. B can also be determined based on A and/or other information.

“Multiple” appearing in the embodiments of this application refers to two or more than two.

The first, second, etc. descriptions appearing in the embodiments of the present application are only for illustration and distinction of the described objects. There is no order, nor do they represent a special limit on the number of objects described in the embodiments of the present application. They cannot constitute Any limitations on the embodiments of this application.

Figure 1 shows a communication system to which this application is applicable. The system includes terminal equipment and network equipment.

In this application, terminal equipment can be various types of equipment that provide voice and/or data connectivity to users, and can also be called terminals, user equipment (user equipment, UE), mobile stations, mobile terminals, etc. Terminal equipment can be widely used in various scenarios, such as customer-premises equipment (CPE), smart point of sale (POS) machines, sidelink scenarios (e.g., device-to-device (device-to-device, D2D), vehicle to everything (V2X)), machine-type communication (MTC), Internet of things (IOT), virtual reality, augmented reality, industry Control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver functions, wearable devices, drones, vehicle-mounted equipment, aerospace equipment, etc. In this embodiment of the present application, the chip used in the above device may also be called a terminal.

The network equipment in the embodiment of this application may be an access network equipment such as a base station. The base station may be an evolutionary base station (eNB or eNodeB) in the LTE system, the next generation base station in the 5G system, the 6G system and beyond Next-generation base stations in communication systems, etc. The embodiments of this application do not limit the specific technologies and specific equipment forms used in network equipment. For example, they may be: macro base stations, micro base stations (also called small stations), relay stations, access points, transmitting and receiving nodes (transmitting and Receiving point (TRP), transmitting point (TP), mobile switching center, network equipment in non-terrestrial communication network (NTN) communication system (that is, it can be deployed on high-altitude platforms or satellites), and sidelink Scenarios (for example, D2D, V2X), equipment responsible for base station functions in MTC communication, etc. Network equipment can be modules or units that complete some functions of the base station. For example, it can be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU). Among them, CU and DU respectively complete part of the protocol stack functions of the base station. In addition, the functions of CU can be implemented by multiple entities. For example, the functions of the control plane (CP) and the user plane (UP) of the CU can be separated to form the CU control plane (CU-CP) and the CU user plane. (CU-UP). For example, CU-CP and CU-UP can be implemented by different functional entities and connected through the E1 interface, and CU-CP and CU-UP can be coupled with DU.

For ease of understanding, the terminology involved in this application is first introduced:

(1) Reference signal (RS) beam

In this application, RS beams can be divided into three categories, namely channel state information reference signal (CSI-RS) beams used for channel state measurement and tracking reference signals used for time-frequency offset tracking measurement. (tracking reference signal, TRS) beam, CSI-RS beam used for beam measurement (or beam training).

Among them, the coverage range of the TRS beam can be approximately the same as the coverage range of the SSB, or the coverage range of the TRS beam can be narrower than the coverage range of the SSB, or the coverage range of the TRS beam can be wider than the coverage range of the SSB, without limitation.

In this application, "A and B are approximately the same" can be understood as "the difference between A and B is small." For example, the difference between A and B is smaller than a preset threshold, which is smaller.

(2)RS resources

In this application, RS resources are resources used to transmit RS beams, or resources used to transmit RS. For example, RS resources include time domain resources, frequency domain resources, code domain resources, etc.

Since RS beams can be divided into three categories, RS resources can also be divided into three categories, namely CSI-RS resources for channel state measurement, TRS resources for time-frequency offset tracking measurement, and CSI-RS resources for beam measurement. RS resources.

The following describes the current problems in detail based on the above three types of RS beams.

(1) For CSI-RS beams used for channel state measurement

For example, if the terminal device is within the coverage of CSI-RS beam #1, the network device can configure the CSI-RS resources corresponding to the CSI-RS beam #1 to the terminal device. If the terminal device switches from CSI-RS beam #1 to CSI-RS beam #2, the network device reconfigures the CSI-RS resources corresponding to CSI-RS beam #2 to the terminal device. Wherein, CSI-RS beam #1 may include one or a group of CSI-RS beams, and CSI-RS beam #2 is similar.

Therefore, if the CSI-RS beam where the terminal device is located changes frequently, signaling interactions between the network device and the terminal device will be relatively frequent.

(2) For TRS beams used for time-frequency offset tracking measurement

Take the example that the coverage range of TRS beam is roughly the same as that of SSB:

For example, if the terminal device is within the coverage of SSB#1, the network device can send MAC CE#1 to the terminal device, and the MAC CE#1 is used to activate the TRS resource corresponding to SSB#1. If the terminal device switches from SSB#1 to SSB#2, the network device sends MAC CE#2 to the terminal device, and the MAC CE#2 is used to activate the TRS resource corresponding to the SSB#2; or, the network device re-configures the terminal device TRS resource corresponding to SSB#2.

Therefore, if the SSB where the terminal device is located changes frequently, signaling interactions between the network device and the terminal device will be relatively frequent.

(3) For CSI-RS beams used for beam measurement

During the beam measurement process, after the terminal device establishes an RRC connection with the network device, the network device can send multiple CSI-RSs to the terminal device through multiple narrow beams. The terminal device can report measurement results for the multiple CSI-RSs to the network device, so that the network device determines a suitable beam from multiple narrow beams to communicate with the terminal device.

For example, if the terminal device is within the coverage of SSB#1, the network device may configure a set of CSI-RS resources corresponding to the SSB#1 to the terminal device. If the terminal device switches from SSB#1 to SSB#2, the network device reconfigures the terminal device with a set of CSI-RS resources corresponding to SSB#2.

In summary, frequent signaling interactions between network equipment and terminal equipment will increase resource overhead on the one hand, and increase the probability of channel congestion on the other.

In order to solve the above problems, this application proposes a communication method 200, as shown in Figure 2. The method 200 includes:

S201: The network device determines the association between multiple SSBs and multiple RS resources based on the coverage ranges of multiple SSBs and the coverage ranges of multiple RS beams.

The plurality of SSBs includes a second SSB, and the association between the plurality of SSBs and the plurality of RS resources includes the association between the second SSB and the RS resources.

Optionally, the multiple SSBs further include a first SSB, and the association relationship between the multiple SSBs and the multiple RS resources further includes the association relationship between the first SSB and the RS resources.

The multiple RS beams can be used for channel state measurement, time-frequency offset tracking measurement, or beam measurement. The plurality of RS beams correspond to the plurality of RS resources.

For detailed description of S201, please refer to methods 300 to 500 below.

S202: The network device sends the association relationships between multiple SSBs and multiple RS resources determined in S201 to the terminal device #1. Correspondingly, terminal device #1 receives association relationships between multiple SSBs and multiple RS resources from the network device.

As a method, the association relationship can be carried in RRC signaling.

Among them, RRC signaling can be divided into RRC dedicated signaling and RRC common signaling.

For example, for RRC dedicated signaling, the RRC signaling may be any one of RRCSetup, RRCResume, and RRCReestablishment.

For example, for RRC public signaling, the RRC signaling may be a system information block (SIB). For example, the SIB may be SIB1. The following describes the process of terminal device #1 receiving SIB1.

When terminal device #1 initially accesses the cell, terminal device #1 searches the SSB's synchronization raster (synchronization raster, synch raster) for SSB. SSB is divided into cell-defining SSB (cell-defining SSB, CD-SSB) and non-cell-defining SSB (NCD-SSB). The master information block (MIB) signaling included in CD-SSB will configure a control resource set (CORESET) for terminal device #1, with an ID of 0, which is CORESET #0.

Terminal equipment #1 monitors the physical downlink control channel (PDCCH) that schedules SIB1 on CORESET #0. The PDCCH is used to schedule the physical downlink shared channel (PDSCH), and the PDSCH is used to carry SIB1.

S203. If the terminal device #1 switches from the first SSB to the second SSB, the terminal device #1 determines the RS resources associated with the second SSB based on the association between the second SSB and the RS resources received in S202.

Among them, the reason why terminal device #1 switches from the first SSB to the second SSB may be any of the following:

(a) Due to the movement of the network device, the terminal device #1 is switched from the first SSB to the second SSB. For example, network equipment is located on a satellite, and the network equipment moves with the movement of the satellite.

(b) Due to the movement of the terminal device #1, the terminal device #1 is switched from the first SSB to the second SSB.

The method by which terminal device #1 determines to switch from the first SSB to the second SSB includes:

Way 1:

Terminal device #1 determines by itself (autonomously) to switch from the first SSB to the second SSB. That is, terminal device #1 can detect by itself that the SSB where it is located has been switched from the first SSB to the second SSB.

For example, terminal device #1 can determine whether the SSB where terminal device #1 is located (the SSB currently in use) has changed based on the size of the reference signal received power (RSRP).

Way 2:

The network device autonomously determines to switch terminal device #1 from the first SSB to the second SSB. The network device may send first information to the terminal device #1, the first information instructing the terminal device #1 to switch from the first SSB to the second SSB. Terminal device #1 determines to switch from the first SSB to the second SSB based on the first information.

For example, the network device is located on a satellite, and the network device can determine to switch the SSB where terminal device #1 is located from the first SSB to the second SSB based on the movement speed and direction of the satellite. For another example, if the network device does not move, the network device may determine to switch the SSB where terminal device #1 is located from the first SSB to the second SSB based on the movement speed and direction of movement of terminal device #1.

S204: The network device sends the RS according to the RS resource associated with the second SSB. Correspondingly, terminal device #1 receives the RS from the network device according to the RS resource associated with the second SSB.

According to the embodiment of the present application, the terminal device has received the association relationships between multiple SSBs and multiple RS resources from the network device in advance. If the terminal device switches to the second SSB, the terminal device can determine the association relationship of the second SSB based on the pre-received association relationship. RS resources. Compared with each time the terminal device performs SSB handover, the network device reconfigures the RS resources associated with the switched SSB to the terminal device. Based on the embodiments of the present application, on the one hand, the signaling between the terminal device and the network device can be reduced. Interaction, thereby saving resources and reducing the probability of channel congestion. On the other hand, it can also reduce the delay for terminal equipment to obtain RS resources and improve communication efficiency.

The method 200 of the present application is described in detail below in conjunction with the method 300 to the method 500.

Figure 3 shows the method 300 proposed in this application. In the method 300, the RS beam is a CSI-RS beam used for channel state measurement. Specifically, the method 300 includes:

S301: The network device determines the association between multiple SSBs and multiple CSI-RS resources (denoted as association #A) based on the coverage of multiple SSBs and the coverage of multiple CSI-RS beams.

Wherein, the multiple CSI-RS beams are used for channel state measurement. The plurality of SSBs include the second SSB, and the association relationship #A includes the association relationship between the second SSB and the CSI-RS resource.

Optionally, the plurality of SSBs also includes a first SSB, and the association relationship #A also includes an association relationship between the first SSB and the CSI-RS resource.

For example, there may be a one-to-many association relationship between SSB and CSI-RS resources. The plurality of CSI-RS beams correspond to the plurality of CSI-RS resources.

Taking the second SSB as an example, if the coverage of the second SSB is approximately the same as the sum of the coverage of three CSI-RS beams (these three CSI-RS beams are recorded as CSI-RS beam #1 and CSI-RS beam respectively) #2 and CSI-RS beam #3, where CSI-RS beam #1 corresponds to CSI-RS resource #1, CSI-RS beam #2 corresponds to CSI-RS resource #2, and CSI-RS beam #3 corresponds to CSI-RS Resource #3), then the second SSB has an associated relationship with CSI-RS resource #1, CSI-RS resource #2 and CSI-RS resource #3.

For example, the coverage range of the second SSB includes cell 1, cell 2 and cell 3, the coverage range of CSI-RS beam #1 is cell 1, the coverage range of CSI-RS beam #2 is cell 2, and the coverage range of CSI-RS beam #3 The coverage range is cell 3, then the coverage range of the second SSB is approximately the same as the sum of the coverage ranges of the above three CSI-RS beams.

S302: The network device sends association relationship #A to terminal device #1. Accordingly, the terminal device #1 receives the association relationship #A.

For example, the association relationship #A may be carried in RRC signaling. Regarding this, reference may be made to the description in S202.

Optionally, the network device can also send indication information #A to terminal device #1. The indication information #A is used to instruct terminal device #1 to perform measurements based on one CSI-RS resource, or to instruct terminal device #1 to measure based on multiple CSI-RS resources at the same time. CSI-RS resources for measurement.

S303. If the terminal device #1 switches from the first SSB to the second SSB, the terminal device #1 determines the CSI-RS resources associated with the second SSB according to the association relationship #A.

For the reason why the terminal device #1 switches from the first SSB to the second SSB, please refer to the description in S203.

It should be understood that initially, the terminal device #1 is located within the coverage of the first SSB, and the terminal device #1 is configured according to the CSI-1 associated with the first SSB. RS resources are measured and the measured CSI is fed back to the network device. After that, the terminal device #1 switches from the first SSB to the second SSB, and the terminal device #1 determines the CSI-RS resources associated with the second SSB according to the association relationship #A.

The method in which terminal device #1 determines to switch from the first SSB to the second SSB may refer to the description in S203.

Optionally, if the terminal device #1 determines to switch from the first SSB to the second SSB on its own, the terminal device #1 can send indication information #B to the network device. The indication information #B is used to instruct the terminal device #1 to switch from the first SSB to the second SSB. SSB switches to the second SSB.

As an implementation, if the network device determines that there is no terminal device within the coverage of the first SSB, the network device can stop sending RS according to the CSI-RS resources associated with the first SSB, thereby saving resources and signaling overhead.

S304: The network device sends CSI-RS according to the CSI-RS resources associated with the second SSB. Correspondingly, terminal device #1 receives CSI-RS from the network device according to the CSI-RS resource associated with the second SSB.

Terminal device #1 can measure the CSI-RS to obtain CSI.

S305: The terminal device #1 sends the measurement result for the CSI-RS received in S304 to the network device. Accordingly, the network device receives the measurement result.

That is, terminal device #1 sends the CSI measured in S304 to the network device.

According to the embodiment of the present application, the terminal device can receive association relationship #A from the network device in advance. If the terminal device switches to the second SSB, the terminal device can determine the CSI-RS resources associated with the second SSB based on the association relationship #A received in advance. Therefore, based on the embodiments of this application, on the one hand, the signaling interaction between the terminal device and the network device can be reduced, thereby saving resources and reducing the probability of channel congestion. On the other hand, the delay for the terminal device to obtain CSI-RS resources can also be reduced. , improve communication efficiency.

Figure 4 shows the method 400 proposed in this application. The difference from the method 300 is that in the method 400, the RS beam is a TRS beam used for time-frequency offset tracking measurement. Specifically, the method 400 includes:

S401: The network device determines the association between multiple SSBs and multiple TRS resources (denoted as association #B) based on the coverage of multiple SSBs and the coverage of multiple TRS beams.

Among them, the multiple TRS beams are used for time-frequency offset tracking measurement. The plurality of TRS beams correspond to the plurality of TRS resources. The multiple SSBs include the second SSB, and the association relationship #B includes the association relationship between the second SSB and the TRS resource.

Optionally, the plurality of SSBs also includes the first SSB, and the association relationship #B also includes the association relationship between the first SSB and the TRS resource.

The relationship between SSB and TRS resources can be a one-to-one relationship, a one-to-many relationship, or a many-to-one relationship. That is to say, the SSB and TRS beams may have a one-to-one association relationship, a one-to-many association relationship, or a many-to-one association relationship.

For example, if the coverage area of one SSB is approximately the same as the coverage area of one TRS beam, then there is an association relationship between the one SSB and the one TRS beam.

For another example, if the coverage area of one SSB is approximately the same as the sum of the coverage areas of two TRS beams, then there is an associated relationship between the one SSB and the two TRS beams.

For another example, if the sum of the coverage areas of two SSBs is approximately the same as the coverage area of one TRS beam, then there is an association relationship between the two SSBs and the one TRS beam.

S402: The network device sends association relationship #B to terminal device #1. Accordingly, the terminal device #1 receives the association relationship #B.

For example, the association relationship #B may be carried in RRC signaling. Regarding this, reference may be made to the description in S202.

S403: If the terminal device #1 switches from the first SSB to the second SSB, the terminal device #1 determines the TRS resources associated with the second SSB based on the association between the second SSB and the TRS resources received in S402.

Regarding the reason why the terminal device #1 switches from the first SSB to the second SSB and the way in which the terminal device #1 determines to switch from the first SSB to the second SSB, refer to S203.

Optionally, if there are multiple TRS resources associated with the second SSB, the network device may send indication information #C to terminal device #1, where the indication information #C is used to instruct terminal device #1 to use one of the multiple TRS resources. Which TRS resource. As an implementation, the indication information #C can be carried in MAC CE signaling.

S404: The network device sends TRS according to the TRS resource associated with the second SSB. Correspondingly, terminal device #1 receives the TRS from the network device according to the TRS resource associated with the second SSB.

Further, terminal equipment #1 can perform time-frequency offset measurement based on the TRS received in S404, and compensate the channel estimate based on the time-frequency offset measurement results, thereby improving the downlink demodulation performance of terminal equipment #1.

According to the embodiment of the present application, the terminal device can receive association relationship #B from the network device in advance. If the terminal device switches to the second SSB, the terminal device can determine the TRS resources associated with the second SSB based on the association relationship #B received in advance. Therefore, based on the embodiments of this application, on the one hand, the signaling interaction between the terminal device and the network device can be reduced, thereby saving resources and reducing the probability of channel congestion. On the other hand, it can also reduce the delay for the terminal device to obtain TRS resources and improve Communication efficiency.

Figure 5 shows the method 500 proposed in this application. Different from the method 300 and the method 400, in the method 500, the RS beam is a CSI-RS beam used for beam measurement. Specifically, the method 500 includes:

S501: The network device determines the association between multiple SSBs and multiple CSI-RS resources (denoted as association #C) based on the coverage of multiple SSBs and the coverage of multiple CSI-RS beams.

For this process, please refer to S301.

Wherein, the multiple CSI-RS beams are used for beam measurement. The plurality of CSI-RS beams correspond to the plurality of CSI-RS resources. The plurality of SSBs include the second SSB, and the association relationship #C includes the association relationship between the second SSB and the CSI-RS resource.

Optionally, the plurality of SSBs also includes a first SSB, and the association relationship #C also includes an association relationship between the first SSB and the CSI-RS resource.

For example, there may be a one-to-many association relationship between SSB and CSI-RS resources.

S502: The network device sends association relationship #C to terminal device #1. Accordingly, the terminal device #1 receives the association relationship #C.

For example, the association #C may be carried in RRC signaling. For details, please refer to S202.

S503. If the terminal device #1 switches from the first SSB to the second SSB, the terminal device #1 determines the CSI-RS resources associated with the second SSB according to the association relationship #C.

S504: The network device sends CSI-RS according to the CSI-RS resources associated with the second SSB. Correspondingly, terminal device #1 receives CSI-RS from the network device according to the CSI-RS resource associated with the second SSB.

As a method, the second SSB is associated with multiple CSI-RS resources, and the network device can send multiple CSI-RSs according to the multiple CSI-RS resources. Correspondingly, the terminal device #1 receives the multiple CSI-RSs. The plurality of CSI-RSs correspond to the plurality of CSI-RS narrow beams on a one-to-one basis. Further, the terminal device #1 measures the received multiple CSI-RSs.

S505: The terminal device #1 sends the measurement result for the CSI-RS received in S504 to the network device. Accordingly, the network device receives the measurement result.

Further, the network device can determine a narrow beam for communicating with terminal device #1 based on the measurement result.

For example, terminal device #1 feeds back the measurement results of three CSI-RSs (denoted as CSI-RS#1 to CSI-RS#3) to the network device. The best one of the three CSI-RS measurement results is CSI - RS#1 measurement result, the network device determines that the narrow beam communicating with the terminal device #1 is the narrow beam corresponding to CSI-RS#1.

According to the embodiment of the present application, the terminal device can receive association relationship #C from the network device in advance. If the terminal device switches to the second SSB, the terminal device can determine the CSI-RS resources associated with the second SSB based on the association relationship #C received in advance. Therefore, based on the embodiments of this application, on the one hand, the signaling interaction between the terminal device and the network device can be reduced, thereby saving resources and reducing the probability of channel congestion. On the other hand, the delay for the terminal device to obtain CSI-RS resources can also be reduced. , improve communication efficiency.

According to the foregoing method, FIG. 6 shows a communication device provided by an embodiment of the present application. The communication device includes a transceiver unit 601 and a processing unit 602.

Among them, the transceiver unit 601 can be used to implement corresponding information transceiver functions. The transceiver unit 601 may also be called a communication interface or a communication unit. Processing unit 602 may be used to perform processing operations.

Exemplarily, the device also includes a storage unit, which can be used to store instructions and/or data. The processing unit 602 can read the instructions and/or data in the storage unit, so that the device implements the foregoing method embodiments. the action of the device.

As a first implementation manner, the device may be the network device in the previous embodiment, or may be a component of the network device (such as a chip). The transceiver unit and the processing unit may be used to implement related operations of the network device in each of the above method embodiments. For example, the transceiver unit is used to implement S202 and S204, or is used to implement S302 and S304, or is used to implement S402 and S404, or is used to implement S502 and S504, and the processing unit is used to implement S201, S301, S401 or S501.

As a second implementation manner, the device may be the terminal equipment in the aforementioned embodiment, or may be a component of the terminal equipment (such as a chip). The transceiver unit and the processing unit may be used to implement related operations of the terminal device in each of the above method embodiments. Example Specifically, the transceiver unit is used to implement S305 or S505, and the processing unit is used to implement S203, S303, S403 or S503.

It should be understood that the specific process of each unit performing the above corresponding steps has been described in detail in each of the above method embodiments, and will not be described again for the sake of brevity.

It should also be understood that the devices here are embodied in the form of functional units. The term "unit" as used herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a proprietary processor, or a group of processors) used to execute one or more software or firmware programs. processor, etc.) and memory, merged logic circuitry, and/or other suitable components to support the described functionality.

The above communication device has the function of realizing the corresponding steps performed by the device in the above method. Functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit can be replaced by a transceiver (for example, the transmitting unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver. ), other units, such as a processing unit, can be replaced by a processor to respectively perform the sending and receiving operations and related processing operations in each method embodiment.

In addition, the above-mentioned transceiver unit 601 may also be a transceiver circuit (for example, it may include a receiving circuit and a transmitting circuit), and the processing unit may be a processing circuit.

It should be understood that the device in Figure 6 can be the device in the aforementioned method embodiment, or it can be a chip or a chip system, such as a system on chip (SoC). The transceiver unit may be an input-output circuit or a communication interface; the processing unit may be a processor, microprocessor, or integrated circuit integrated on the chip. No limitation is made here.

An embodiment of the present application also provides a communication device, as shown in Figure 7 , including: a processor 701 and a communication interface 702. The processor 701 is used to execute computer programs or instructions stored in the memory 703, or read data stored in the memory 703, to execute the methods in each of the above method embodiments. For example, there are one or more processors 701 . Communication interface 702 is used for receiving and/or transmitting signals. For example, the processor 701 is used to control the communication interface 702 to receive and/or send signals.

For example, as shown in Figure 7, the communication device may further include a memory 703, which is used to store computer programs or instructions and/or data. The memory 703 may be integrated with the processor 701, or may be provided separately. Of course, the communication device may not include the memory 703, and the memory 703 is provided outside the communication device. By way of example, there are one or more memories 703 .

Exemplarily, the processor 701, the communication interface 702, and the memory 703 are connected to each other through a bus 704; the bus 704 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) ) bus, etc. The above-mentioned bus 704 can be divided into an address bus, a data bus, a control bus, etc. For ease of presentation, only one thick line is used in Figure 7, but it does not mean that there is only one bus or one type of bus.

For example, the processor 701 is used to execute computer programs or instructions stored in the memory 703.

As a first implementation manner, the device may be the network device in the previous embodiment, or may be a component of the network device (such as a chip). The communication interface and processor can be used to implement related operations of the network device in each of the above method embodiments. For example, the communication interface is used to implement S202 and S204, or is used to implement S302 and S304, or is used to implement S402 and S404, or is used to implement S502 and S504, and the processor is used to implement S201, S301, S401 or S501.

As a second implementation manner, the device may be the terminal equipment in the aforementioned embodiment, or may be a component of the terminal equipment (such as a chip). The communication interface and processor can be used to implement related operations of the terminal device in each of the above method embodiments. For example, the communication interface is used to implement S305 or S505, and the processor is used to implement S203, S303, S403 or S503.

It should be understood that the processor (such as processor 701) mentioned in the embodiment of this application can be a central processing unit (CPU), a network processor (network processor, NP) or a combination of CPU and NP. The processor may further include hardware chips. The above-mentioned hardware chip can be an ASIC, a programmable logic device (PLD) or a combination thereof. The above-mentioned PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL) or any combination thereof.

It should also be understood that the memory (such as memory 703) mentioned in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM), which is used as an external cache.

Those of ordinary skill in the art may realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein, It can be implemented with electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

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

A unit described as a separate component may or may not be physically separate. A component shown as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

Functions may be stored in a computer-readable storage medium when implemented in the form of software functional units and sold or used as independent products. This application provides a computer-readable storage medium, which includes a computer program. When the computer program is run on a computer, it causes the computer to perform any possible implementation of the above method embodiments.

The technical solution of this application or part of the technical solution can be embodied in the form of a software product. Therefore, this application also provides a computer program product. The computer program product includes: a computer program (which can also be called a code, or an instruction). When the computer program is run, it causes the computer to perform any one of the above method embodiments. realization. The computer software product is stored in a storage medium and includes a number of instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application.

The aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

The content in the various embodiments of this application can be referenced to each other. If there are no special instructions or logical conflicts, the terminology and/or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments New embodiments can be formed based on their internal logical relationships.

It can be understood that in the embodiment of the present application, the terminal device and/or the network device may perform some or all of the steps in the embodiment of the present application. These steps or operations are only examples. In the embodiment of the present application, other operations may also be performed or Variations of various operations. In addition, various steps may be performed in a different order than those presented in the embodiments of the present application, and it may not be necessary to perform all operations in the embodiments of the present application.

Claims

A communication method, characterized by including:

The terminal device receives an association between multiple synchronization signals/physical broadcast channel blocks SSB and multiple reference signal RS resources from the network device, and the association between the multiple SSB and the multiple RS resources includes a second The relationship between SSB and RS resources;

If the terminal device switches from the first SSB to the second SSB, the terminal device determines the RS resource associated with the second SSB based on the association relationship between the second SSB and the RS resource;

The terminal device receives the RS from the network device according to the RS resource associated with the second SSB.
The method of claim 1, further comprising:

The terminal device sends the measurement result for the RS to the network device.
The method according to claim 1 or 2, characterized in that, the method further includes:

The terminal device autonomously determines to switch from the first SSB to the second SSB.
The method according to claim 1 or 2, characterized in that, the method further includes:

The terminal device receives first information from the network device, and the first information instructs the terminal device to switch from the first SSB to the second SSB.
The method according to any one of claims 1-4, characterized in that,

The association between the plurality of SSBs and the plurality of RS resources is carried in radio resource control RRC signaling.
A communication method, characterized by including:

The network device determines the association between the multiple SSBs and the multiple RS resources based on the coverage ranges of the multiple synchronization signal/physical broadcast channel block SSBs and the coverage ranges of the multiple reference signal RS beams. The multiple RS beams are associated with the The above-mentioned multiple RS resources correspond;

The network device sends the association relationship between the multiple SSBs and the multiple RS resources to the terminal device, where the association relationship between the multiple SSBs and the multiple RS resources includes a second SSB and an RS resource. relationship;

The network device sends RS according to the RS resource associated with the second SSB.
The method of claim 6, further comprising:

The network device autonomously determines to switch the terminal device from the first SSB to the second SSB;

The network device sends first information to the terminal device, where the first information instructs the terminal device to switch from the first SSB to the second SSB.
The method according to claim 6 or 7, characterized in that, the method further includes:

The network device receives the measurement result for the RS from the terminal device.
The method according to any one of claims 6-8, characterized in that,

The association between the plurality of SSBs and the plurality of RS resources is carried in radio resource control RRC signaling.
A terminal device, characterized by including:

A transceiver unit configured to receive an association relationship between multiple synchronization signals/physical broadcast channel blocks SSB and multiple reference signal RS resources from a network device, and an association relationship between the multiple SSBs and the multiple RS resources. Including the relationship between the second SSB and RS resources;

If the terminal device switches from the first SSB to the second SSB, the processing unit is configured to determine the RS resource associated with the second SSB according to the association relationship between the second SSB and the RS resource;

The transceiver unit is configured to receive RS from the network device according to the RS resource associated with the second SSB.
The terminal device according to claim 10, characterized in that the transceiver unit is configured to send the measurement result for the RS to the network device.
The terminal device according to claim 10 or 11, characterized in that the processing unit is configured to autonomously determine switching from the first SSB to the second SSB.
The terminal device according to claim 10 or 11, characterized in that the transceiver unit is configured to receive first information from the network device, the first information instructs the terminal device to switch from the first SSB to the second SSB.
The terminal device according to any one of claims 10-13, characterized in that,

The association between the plurality of SSBs and the plurality of RS resources is carried in radio resource control RRC signaling.
A network device, characterized by including:

A processing unit configured to determine the association between the multiple SSBs and the multiple RS resources based on the coverage ranges of the multiple synchronization signal/physical broadcast channel block SSBs and the coverage ranges of the multiple reference signal RS beams, where the multiple RS resources The beam corresponds to the plurality of RS resources;

A transceiver unit configured to send the association relationship between the multiple SSBs and the multiple RS resources to the terminal device, where the association relationship between the multiple SSBs and the multiple RS resources includes a second SSB and a RS Resource relationships;

The transceiver unit is configured to send RS according to the RS resource associated with the second SSB.
The network device according to claim 15, wherein the processing unit is configured to independently determine to switch the terminal device from the first SSB to the second SSB;

The transceiver unit is configured to send first information to the terminal device, where the first information instructs the terminal device to switch from the first SSB to the second SSB.
The network device according to claim 15 or 16, characterized in that the transceiver unit is configured to receive the measurement result for the RS from the terminal device.
The network device according to any one of claims 15-17, characterized in that,

The association between the plurality of SSBs and the plurality of RS resources is carried in radio resource control RRC signaling.
A communication device, characterized by comprising: a communication interface and a processor, the communication interface is used to output and/or input signals, the processor is used to execute computer programs or instructions stored in a memory, so that the communication device Perform the method as described in any one of claims 1-5; or, cause the communication device to perform the method as described in any one of claims 6-9.
The communication device according to claim 19, further comprising the memory.
A computer-readable storage medium, characterized in that it includes a computer program or instructions that, when the computer program or instructions are run on a computer, cause the computer to execute as described in any one of claims 1-5 The method; or, causing the computer to execute the method according to any one of claims 6-9.
A computer program product, characterized in that it contains instructions that, when the instructions are run on a computer, cause the computer to execute the method according to any one of claims 1 to 5; or, cause the computer to execute The method according to any one of claims 6-9.