Resource update method and related apparatus

Abstract

Provided are a resource update method and a related apparatus. The method comprises: receiving from a network device an RRC message, which is used for configuring at least one reference signal resource group, wherein each of the at least one reference signal resource group comprises at least one reference signal resource; and receiving from the network device a resource update message, which is used for updating information of reference signal resources of N reference signal resource groups among the at least one reference signal resource group, wherein N is a positive integer, and the resource update message is DCI or an MAC-CE. Information of a reference signal resource is updated by means of DCI or an MAC-CE, and compared with an RRC message, the DCI or the MAC-CE has a lower delay, such that a network device can indicate the information of the updated reference signal resource to a terminal device in a timely manner, and thus it is conducive for the terminal device to adjust a receiving beam in a timely manner, thereby improving the transmission performance.

Description

A resource updating method and related device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on July 17, 2023, with application number 202310879459.2 and application name “A Resource Update Method and Related Devices”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and in particular to a resource updating method and related devices. Background Art

[0003] Network devices and terminal devices can communicate using specific beams. The specific beam used is determined through beam measurement. For example, the network device can send reference signals using different beams, one for each beam. The terminal device then determines the beam with the best quality based on measurements of the received reference signals.

[0004] In order to reduce the complexity and overhead of measurement, two-level beam management can be adopted. Taking the measurement of the downlink reference signal as an example, the network device can configure multiple synchronization signal block (SSB) resources for the terminal device, each SSB resource corresponds to a wider beam, and the network device uses these wider beams to send the corresponding SSBs respectively. The terminal device determines and reports the wide beam with better quality based on the measurement of the above SSBs. Furthermore, based on the above wide beam, the network device configures multiple channel state information reference signal (CSI-RS) resources for the terminal device, each CSI-RS resource corresponds to a narrow beam, that is, the above wide beam is subdivided into narrow beams, and the network device sends the corresponding CSI-RS respectively through these narrow beams. The terminal device determines and reports the narrow beam with better quality based on the measurement of the above CSI-RS.

[0005] When the set of narrow beams that the terminal device is measuring changes (for example, due to a change in the terminal device's location), the network device can update the CSI-RS resource information, such as the beam corresponding to the CSI-RS resource, frequency domain information, and time domain information, through radio resource control (RRC) messages. However, because RRC messages are high-layer signaling and have a large transmission delay, the network device cannot promptly notify the terminal device of the updated CSI-RS resource information, resulting in the terminal device being unable to select the appropriate beam for reception in a timely manner, which in turn causes transmission performance loss.

[0006] Summary of the Invention

[0007] The present application provides a resource updating method and related devices in order to reduce latency and thereby improve transmission performance.

[0008] In the first aspect, the present application provides a resource update method, which can be executed by a terminal device, or by a component configured in the terminal device (such as a chip, a chip system, etc.), or by a logic module or software that can realize all or part of the functions of the terminal device. The present application does not limit this.

[0009] Exemplarily, the method includes: receiving an RRC message from a network device, the RRC message being used to configure at least one reference signal resource group (resource group), each reference signal resource group in the at least one reference signal resource group including at least one reference signal resource; receiving a resource update message from the network device, the resource update message being used to update information of reference signal resources of N reference signal resource groups in the at least one reference signal resource group, wherein N is a positive integer, and the resource update message is downlink control information (DCI) or a medium access control (MAC)-control element (CE).

[0010] In the above technical solution, the information of the reference signal resources of N reference signal resource groups in at least one reference signal resource group configured in the RRC message is updated through DCI or MAC-CE. Compared with the RRC message, DCI and MAC-CE have lower latency, which enables the network device to indicate the updated reference signal resource information to the terminal device more promptly, thereby facilitating the terminal device to adjust the receiving beam in time, thereby improving transmission performance.

[0011] In combination with the first aspect, in some possible implementations of the first aspect, before receiving a resource update message from a network device, the method further includes: sending terminal capability information to the network device, the terminal capability information being used to indicate one or more of the following: whether it supports updating the information of the reference signal resources of the above-mentioned N reference signal resource groups through a resource update message; whether it supports the resource update message indicating a corresponding beam information for each reference signal resource group in the above-mentioned N reference signal resource groups; whether it supports the resource update message indicating a corresponding beam information for each reference signal resource included in the above-mentioned N reference signal resource groups; whether it supports the resource update message indicating a corresponding time slot information for each reference signal resource group in the above-mentioned N reference signal resource groups; whether it supports the resource update message indicating a corresponding time slot information for each reference signal resource included in the above-mentioned N reference signal resource groups; the supported values ​​of N; whether it supports the value of N to be variable; or whether it supports the reference signal resources of the N reference signal resource groups to use a common beam.

[0012] The terminal device can report one or more of the above-mentioned terminal capability information, so that the network device can reasonably update the reference signal resources for the terminal device based on the terminal capability information reported by the terminal device. For example, if the terminal device supports updating the reference signal resource information of N reference signal resource groups through resource update messages, the network device can use this method to update the reference signal resource information.

[0013] On the second aspect, the present application provides a resource update method, which can be executed by a network device, or by a component configured in the network device (such as a chip, a chip system, etc.), or by a logic module or software that can realize all or part of the network device functions. The present application does not limit this.

[0014] Exemplarily, the method includes: sending an RRC message to a terminal device, the RRC message being used to configure at least one reference signal resource group, each reference signal resource group in the at least one reference signal resource group including at least one reference signal resource; sending a resource update message to the terminal device, the resource update message being used to update information of reference signal resources of N reference signal resource groups in the at least one reference signal resource group, wherein N is a positive integer and the resource update message is DCI or MAC-CE.

[0015] In the above technical solution, the information of the reference signal resources of N reference signal resource groups in at least one reference signal resource group configured in the RRC message is updated through DCI or MAC-CE. Compared with the RRC message, DCI and MAC-CE have lower latency, which enables the network device to indicate the updated reference signal resource information to the terminal device more promptly, thereby facilitating the terminal device to adjust the receiving beam in time, thereby improving transmission performance.

[0016] In combination with the second aspect, in some possible implementations of the second aspect, before sending the RRC message to the terminal device, the method also includes: receiving terminal capability information, the terminal capability information being used to indicate one or more of the following: whether it supports updating the information of the reference signal resources of N reference signal resource groups through a resource update message; whether it supports that for each reference signal resource group in the above-mentioned N reference signal resource groups, the resource update message indicates a corresponding beam information; whether it supports that for each reference signal resource included in the above-mentioned N reference signal resource groups, the resource update message indicates a corresponding beam information; whether it supports that for each reference signal resource group in the above-mentioned N reference signal resource groups, the resource update message indicates a corresponding time slot information; whether it supports that for each reference signal resource included in the above-mentioned N reference signal resource groups, the resource update message indicates a corresponding time slot information; the supported value of N; whether it supports that the value of N is variable; or, whether it supports that the reference signal resources of the N reference signal resource groups use a common beam.

[0017] In combination with the first aspect and the second aspect, in some possible implementations, the above-mentioned resource update message is used to indicate at least one of the following: information for determining the value of N; the index of the above-mentioned N reference signal resource groups; the beam information of the reference signal resources in the above-mentioned N reference signal resource groups; whether the above-mentioned resource update message indicates the beam information of the reference signal resources in the above-mentioned N reference signal resource groups; the time slot information of the reference signal resources in the above-mentioned N reference signal resource groups; or, the period information of the reference signal resources in the above-mentioned N reference signal resource groups.

[0018] In combination with the first aspect and the second aspect, in some possible implementations, the beam information of the reference signal resources in the above-mentioned N reference signal resource groups is indicated by any one of the following methods: a first beam indication method or a second beam indication method; wherein, when the resource update message adopts the first beam indication method, a corresponding beam information is indicated for each reference signal resource group in the above-mentioned N reference signal resource groups; when the resource update message adopts the second beam indication method, a corresponding beam information is indicated for each reference signal resource included in the above-mentioned N reference signal resource groups.

[0019] The network device can indicate the beam information of the reference signal resources of the above-mentioned N reference signal resource groups through any one of the above-mentioned first beam indication method or the second beam indication method, which is more flexible than a single beam indication method.

[0020] Wherein, corresponding beam information is indicated for each of the N reference signal resource groups, which can be understood as follows: when transmitting reference signals based on all reference signal resources in a reference signal resource group, the beam corresponding to the indicated reference signal resource group can be used. Corresponding beam information is indicated for each reference signal resource included in the N reference signal resource groups, which can be understood as follows: when transmitting reference signals based on each reference signal resource in the N reference signal resource groups, the beam corresponding to the reference signal resource can be used.

[0021] In combination with the first aspect and the second aspect, in some possible implementations, the resource update message is also used to indicate a beam indication mode, which includes a first beam indication mode or a second beam indication mode.

[0022] In other words, the network device can instruct the terminal device which beam indication method to use to indicate the beam information of the reference signal resources of the above-mentioned N reference signal resource groups, so as to facilitate the alignment of the beam indication methods between the network device and the terminal device, and thus facilitate the terminal device to correctly read the beam information of the reference signal resources.

[0023] In combination with the first aspect and the second aspect, in some possible implementations, the time slot information of the reference signal resources in the above-mentioned N reference signal resource groups is indicated by any one of the following methods: a first time slot indication method or a second time slot indication method; wherein, when the resource update message adopts the first time slot indication method, a corresponding time slot information is indicated for each reference signal resource group in the N reference signal resource groups; when the resource update message adopts the second time slot indication method, a corresponding time slot information is indicated for each reference signal resource included in the N reference signal resource groups.

[0024] The network device may indicate the time slot information of the reference signal resources of the N reference signal resource groups by using either the first time slot indication method or the second time slot indication method, which is more flexible than a single time slot indication method.

[0025] Wherein, for each of the N reference signal resource groups, corresponding time slot information is indicated. This can be understood as follows: when a reference signal is transmitted based on all reference signal resources in a reference signal resource group, the indicated time slot information corresponding to the reference signal resource group can be used. For each reference signal resource included in the N reference signal resource groups, corresponding time slot information is indicated. This can be understood as follows: when a reference signal is transmitted based on each reference signal resource in the N reference signal resource groups, the time slot information corresponding to the reference signal resource can be used.

[0026] In combination with the first aspect and the second aspect, in some possible implementations, the resource update message is further used to indicate a time slot indication mode, where the time slot indication mode includes a first time slot indication mode or a second time slot indication mode.

[0027] In other words, the network device can instruct the terminal device which time slot indication method to use to indicate the time slot information of the reference signal resources of the above-mentioned N reference signal resource groups, so as to facilitate the alignment of the time slot indication methods between the network device and the terminal device, and thus facilitate the terminal device to correctly read the time slot information of the reference signal resources.

[0028] In combination with the first aspect and the second aspect, in some possible implementations, the above-mentioned time slot information is a relative time slot offset; when the resource update message adopts the first time slot indication method, the relative time slot offset corresponding to each reference signal resource group is used to update the time slot position of all reference signal resources in each reference signal resource group; or, when the resource update message adopts the second time slot indication method, the relative time slot offset corresponding to each reference signal resource is used to update the time slot position of each reference signal resource.

[0029] In combination with the first aspect and the second aspect, in some possible implementations, the periodic information of the reference signal resources in N reference signal resource groups is indicated by any one of the following methods: a first periodic indication method or a second periodic indication method; when the resource update message adopts the first periodic indication method, a corresponding periodic information is indicated for each reference signal resource group in the N reference signal resource groups; when the resource update message adopts the second periodic indication method, a corresponding periodic information is indicated for all reference signal resources included in the N reference signal resource groups.

[0030] Wherein, corresponding period information is indicated for each of the N reference signal resource groups, which can be understood as indicating that the periods of all reference signal resources in a reference signal resource group indicate the period corresponding to the reference signal resource group. Corresponding period information is indicated for all reference signal resources included in the N reference signal resource groups, which can be understood as indicating that all reference signal resources in the N reference signal resource groups share one period.

[0031] In combination with the first aspect and the second aspect, in some possible implementations, the RRC message is also used to configure one or more of the following: whether to update the information of the reference signal resources of the N reference signal resource groups through the resource update message; whether for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding beam information; whether for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding beam information; whether for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; whether for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; supported values ​​of N; whether the value of N is supported to be variable; or whether the reference signal resources of the N reference signal resource groups use a common beam.

[0032] In a third aspect, the present application provides a communications device that can implement the method described in the first aspect and any possible implementation of the first aspect, or implement the method described in the second aspect and any possible implementation of the second aspect. The device includes corresponding units for executing the above methods. The units included in the device can be implemented in software and / or hardware.

[0033] In a fourth aspect, the present application provides a communication device comprising a processor. The processor is coupled to a memory and can be configured to execute a computer program in the memory to implement the method of the first aspect and any possible implementation of the first aspect, or to implement the method of the second aspect and any possible implementation of the second aspect.

[0034] Optionally, the apparatus further includes a communication interface, and the processor is coupled to the communication interface. The communication interface is configured to receive signals from a communication device other than the apparatus and transmit the signals to the processor, or to transmit signals from the processor to the communication device other than the apparatus. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface.

[0035] Optionally, the device further comprises a memory, the processor being coupled to the memory, wherein the memory is used to store program instructions and data.

[0036] In a fifth aspect, the present application provides a computer-readable storage medium, which stores a computer program or instructions. When the computer program or instructions are executed, it implements the method in the first aspect and any possible implementation of the first aspect, or implements the method in the second aspect and any possible implementation of the second aspect.

[0037] In a sixth aspect, the present application provides a computer program product comprising instructions, which, when executed, implement the method of the first aspect and any possible implementation of the first aspect, or implement the method of the second aspect and any possible implementation of the second aspect.

[0038] In the seventh aspect, the present application provides a chip system, which includes at least one processor for supporting the implementation of the functions involved in the above-mentioned first aspect and any possible implementation method of the first aspect, or for supporting the implementation of the functions involved in the above-mentioned second aspect and any possible implementation method of the second aspect, for example, receiving or processing the data involved in the above-mentioned method, etc.

[0039] In one possible design, the chip system further includes a memory, which is used to store program instructions and data, and the memory is located inside or outside the processor.

[0040] The chip system can be composed of chips, or can include chips and other discrete devices.

[0041] In an eighth aspect, the present application provides a communication system, comprising a terminal device for implementing the method described in the first aspect and any possible implementation of the first aspect, and a network device for implementing the method described in the second aspect and any possible implementation of the second aspect.

[0042] It should be understood that the third to eighth aspects of the present application correspond to the technical solutions of the first and second aspects of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] FIG1 is a schematic diagram of a beam management process according to an embodiment of the present application;

[0044] FIG2 is a schematic diagram of an existing resource update process provided in an embodiment of the present application;

[0045] FIG3 is a schematic diagram of the system architecture of a communication system provided in an embodiment of the present application;

[0046] FIG4 is a schematic diagram of a communication device performing communication according to an embodiment of the present application;

[0047] FIG5 is a schematic flow chart of a resource updating method provided in an embodiment of the present application;

[0048] FIG6 is a schematic diagram of a detailed flow chart of a resource updating method provided in an embodiment of the present application;

[0049] FIG7 is a schematic block diagram of a communication device provided in an embodiment of the present application;

[0050] FIG8 is another schematic block diagram of a communication device provided in an embodiment of the present application;

[0051] FIG9 is a schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0052] FIG10 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] The technical solution in this application will be described below with reference to the accompanying drawings.

[0054] The technical solutions provided in this application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, sidelink communication system, universal mobile telecommunication system (UMTS), world-wide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) mobile communication system or new radio access technology (NR). Among them, the 5G mobile communication system may include non-standalone (NSA) and / or standalone (SA).

[0055] The technical solution provided in this application can also be applied to future communication systems, such as the sixth generation (6G) mobile communication system, etc. This application does not limit this.

[0056] The following first introduces the network elements involved in the embodiments of the present application: network devices and terminal devices.

[0057] In the embodiment of the present application, the network device can be any device with wireless transceiver function. The network device includes, but is not limited to, an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., a home evolved Node B, or a home Node B, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (Wi-Fi) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc. It may also be a gNB or a transmission point (TRP or TP) in a 5G (such as NR) system, or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or it may also be a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU), etc. The network device may also be a wireless controller in a cloud radio access network (CRAN) scenario. The network device may also be a wearable device or an in-vehicle device.

[0058] In an embodiment of the present application, the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.

[0059] The terminal device may be a device that provides voice / data connectivity to users, such as a handheld device or vehicle-mounted device with wireless connection function. At present, some examples of terminal devices may include: mobile phones, tablet computers, computers with wireless transceiver functions (such as laptops, PDAs, etc.), mobile internet devices (MIDs), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, drones, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or future evolved public land mobile communication networks (PLMNs). Mobile network, PLMN) terminal equipment, etc.

[0060] Wearable devices, also known as wearable smart devices, are a general term for wearable devices that use wearable technology to intelligently design and develop wearable devices for daily wear, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include those that are fully functional, large in size, and can achieve full or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0061] Furthermore, terminal devices can also be end devices in the Internet of Things (IoT) system. IoT is a crucial component of future information technology development. Its primary technical feature is connecting objects to the Internet through communications technology, thereby enabling intelligent networks that interconnect humans and machines, and objects and things. IoT technology, for example, utilizes narrowband (NB) technology to achieve massive connectivity, deep coverage, and power-saving terminals.

[0062] In addition, terminal devices can also include sensors such as smart printers, train detectors, and gas stations. Their main functions include collecting data (part of the terminal devices), receiving control information and downlink data from network devices, and sending electromagnetic waves to transmit uplink data to network devices.

[0063] It should be understood that this application does not limit the specific forms of network devices and terminal devices.

[0064] In order to better understand the method provided in the embodiments of the present application, the terms involved in the present application are briefly explained below.

[0065] 1. Beam: can be understood as spatial domain filter, spatial filter, spatial domain parameter, spatial parameter, spatial domain setting, spatial setting, Quasi-colocation (QCL) information, QCL assumption, QCL indication, transmission configuration indicator (TCI) state, or spatial relation, etc. Therefore, in this application, concepts such as beam, spatial domain filter, spatial filter, spatial domain parameter, spatial parameter, spatial setting, spatial setting, QCL information, QCL assumption, QCL indication, TCI state (including uplink TCI state or downlink TCI state), and spatial relation are equivalent, and the above concepts can be replaced with each other.

[0066] The beam used to transmit a signal may be referred to as a transmission beam (Tx beam), or may be referred to as a spatial domain transmission filter, a spatial transmission filter, a spatial domain transmission parameter, a spatial transmission parameter, a spatial domain transmission setting, or a spatial transmission setting. The downlink transmit beam may be indicated by a downlink TCI-state.

[0067] A beam used to receive a signal may be referred to as a reception beam (Rx beam), and may also be referred to as a spatial domain reception filter, a spatial reception filter, a spatial domain reception parameter, a spatial reception parameter, a spatial domain reception setting, or a spatial reception setting.

[0068] Furthermore, the beam can be a wide beam, a narrow beam, or other types of beams. The beam forming technology can be beamforming technology or other technologies. The beamforming technology can specifically be digital beamforming technology, analog beamforming technology, or hybrid digital / analog beamforming technology.

[0069] Optionally, multiple beams with the same or similar communication characteristics can be considered a single beam. A beam can include one or more antenna ports for transmitting data channels, control channels, and sounding signals. The one or more antenna ports forming a beam can also be considered an antenna port set.

[0070] 2. Reference Signals and Reference Signal Resources: Reference signals can be used for channel measurement, channel estimation, or beamforming. Reference signal resources can be used to configure reference signal transmission properties, such as time-frequency resource location, port mapping, power factor, and scrambling code. Transmitting devices can send reference signals based on reference signal resources, and receiving devices can receive reference signals based on reference signal resources.

[0071] In beam measurement, there is a corresponding relationship between the beam and the reference signal resource. The reference signal resource can be an uplink reference signal resource or a downlink reference signal resource. The uplink reference signal includes but is not limited to: sounding reference signal (SRS) and demodulation reference signal (DMRS). The downlink reference signal includes but is not limited to: CSI-RS, cell specific reference signal (CS-RS), UE specific reference signal (US-RS), demodulation reference signal (DMRS), and synchronization system / physical broadcast channel block (SS / PBCH block). Among them, SS / PBCH block can be referred to as SSB.

[0072] Reference signal resources are configured via RRC messages. In terms of the configuration structure, a resource is an information element (IE), which includes relevant parameters of its corresponding uplink / downlink reference signal, such as the type of uplink / downlink reference signal, the resource element carrying the uplink / downlink reference signal, the transmission time and period of the uplink / downlink reference signal, the number of ports used to transmit the uplink / downlink reference signal, etc. Each uplink / downlink reference signal resource has a unique index to identify the reference signal resource. It is understood that the index of a reference signal resource can also be referred to as the identifier of the reference signal resource, and the embodiments of the present application do not impose any restrictions on this.

[0073] In addition, in the present application, the parameters used to measure the beam quality include received signal strength indicator (RSSI), reference signal received power (RSRP), etc., but are not limited thereto. For example, the beam quality can also be measured by parameters such as reference signal receiving quality (RSRQ), signal-noise ratio (SNR), signal to interference plus noise ratio (SINR), precoding matrix indicator (PMI), transmitted precoding matrix indicator (TPMI), rank indicator (RI), transmitted rank indicator (TRI), layer indicator (LI), and timing advance (TA).

[0074] It should be understood that the reference signals and corresponding reference signal resources listed above are only exemplary and should not constitute any limitation to this application. This application does not exclude the possibility of defining other reference signals in future protocols to achieve the same or similar functions.

[0075] 3. TCI status: In uplink and downlink transmission, both the network device and the terminal device need to use the correct beam to achieve better transmission. In downlink transmission, the network device needs to indicate to the terminal device the downlink transmit beam it uses so that the terminal device knows which receive beam to use for reception; in uplink transmission, the network device also needs to indicate to the terminal device which uplink transmit beam the terminal device needs to use, because the network device knows which beam of the terminal device is the best. Both uplink and downlink beams can be indicated by the TCI status. For example, the beam used for downlink transmission is indicated by the downlink TCI status, and the beam used for uplink transmission is indicated by the uplink TCI status. In the 3rd Generation Partnership Project (3GPP) protocol, the network device indicates the specific TCI status to the terminal device through the TCI field in the downlink control information (DCI). The TCI field size is 3 bits (bits) and can specifically represent 8 different field values ​​(codepoints). Each field value of the TCI field can be associated with an index of a TCI state, and the TCI state index can uniquely identify a TCI state, which can be a downlink TCI state or an uplink TCI state. Each field value of the TCI field can also be associated with the indexes of two TCI states, and the two TCI state indexes can uniquely identify two TCI states, which can be a downlink TCI state and an uplink TCI state, two downlink TCI states, or two uplink TCI states.

[0076] The downlink TCI state includes several parameters, through which the terminal device can determine the relevant information of the downlink transmit beam, and thus determine which receive beam to use. The TCI state is configured by the network device for each terminal device. Each TCI state includes its own index "tci-StateId" and two "QCL-Info". Each "QCL-Info" includes a reference signal resource, which is used to indicate that the downlink transmission using this TCI state should use the same downlink timing, frequency offset, or receive beam as the reference signal resource. Which one it is depends on the type of the "QCL-Info", that is, another field "qcl-Type" of the "QCL-Info". "qcl-Type" can have four values, namely type (type) A, typeB, typeC, and typeD. When the type is typeA, typeB and typeC, the downlink transmission using this TCI state should use the same downlink timing and frequency offset information as the reference signal resource. When the type is typeD, the downlink transmission using this TCI-state should use the same receive beam as the reference signal resource. Of the two "QCL-Info" messages mentioned above, one is type D, and the other is type A, type B, or type C. The terminal device can use the type D "QCL-Info" to determine which receive beam to use for the corresponding downlink transmission. The specific steps are as follows:

[0077] 1) The network device indicates the downlink TCI status of a downlink transmission to the terminal device through DCI (indicated by the TCI field).

[0078] 2) The terminal device determines the reference signal resources in the “QCL-Info” of type D in the TCI state.

[0079] 3) Determine the receive beam corresponding to the downlink transmission as the receive beam for the reference signal resource. It should be understood that through the beam management process, the terminal device can determine which receive beam is best to receive the reference signal resource and use the receive beam as the receive beam for the reference signal resource.

[0080] Similarly, the uplink TCI state includes a reference signal resource, which is used to indicate that the uplink transmission using this TCI state should use the same uplink transmission beam as the reference signal resource. The terminal device can determine which transmission beam to use to send the corresponding uplink transmission through the reference signal resource. In the uplink TCI state, the reference signal resource is not included in the "QCL-Info" and does not distinguish between QCL types, because there is no need to refer to the uplink timing and frequency offset information, only the uplink transmission beam. The specific execution steps are as follows:

[0081] 1) The network device indicates the uplink TCI status of a downlink transmission to the terminal device through DCI (indicated by the TCI field).

[0082] 2) The terminal device determines the reference signal resources in the TCI state.

[0083] 3) Determine the transmission beam corresponding to the uplink transmission as the transmission beam of the reference signal resource.

[0084] It should be understood that the structures of the uplink TCI state and the downlink TCI state can be referred to known protocols and will not be described in detail here.

[0085] 4. Beam management

[0086] Beam management is divided into downlink beam management and uplink beam management.

[0087] 1) Downlink beam management

[0088] Downlink beam management mainly includes the following steps:

[0089] S1. The network device sends measurement configuration information to the terminal device. The network device sends measurement configuration information to the terminal device via an RRC message. The information mainly consists of two parts: resource configuration information and reporting configuration information. Resource configuration information is information related to reference signal resources and is configured in the protocol using a three-level structure: resource configuration (resourceConfig) - resource set (resource) - resource (resource). The network device can configure one or more resource configurations (also written as "resourceSetting") for the terminal device. Each resource configuration includes one or more resource sets, and each resource set can include one or more resources. Each resource configuration, resource set, or resource has its own index. In addition, it also includes other parameters such as the resource period and the signal type corresponding to the resource. Reporting configuration information refers to information related to measurement result reporting and is configured in the protocol using a reporting configuration (ReportConfig). The network device can configure one or more reporting configurations for the terminal device. Each reporting configuration includes reporting metrics, reporting time and period, reporting format, and other reporting-related information. The reporting configuration also includes a resource configuration index, which indicates the measurement configuration used to measure the reported result. For the specific format of resource configuration and reporting configuration, please refer to the known protocol and will not be described in detail here.

[0090] S2. The network device sends a downlink reference signal on the resource element corresponding to the resource configured by the resource configuration information, so that the terminal device determines the quality of each resource (or the quality of the reference signal, or the quality of the beam corresponding to the resource) by measuring the downlink reference signal.

[0091] S3. The terminal device measures the downlink reference signal according to the measurement configuration information.

[0092] S4. The terminal device sends a beam measurement report to the network device. The beam measurement report may include the index of one or more resources, the quality of the resources, etc. Table 1 shows the reporting format used for beam measurement in the R15 protocol. Among them, the CSI-RS index (CSI-RS index, CRI) field and the SSB resource index (SSBRI) field are used to indicate the resource index to be reported. Only CRI or SSBRI can be reported, or both can be reported. and is the length of the CRI and SSBRI fields. RSRP is the resource quality. RSRP is reported using a differential reporting criterion: the best resource RSRP (RSRP field in Table 1) is reported using 7 bits, while other RSRP fields (differential RSRP in Table 1) are reported using 4 bits.

[0093] Table 1

[0094] The above information may be carried on a physical uplink control channel (physical uplink control channel) or a physical uplink shared channel (physical uplink shared channel).

[0095] 2) Uplink beam management

[0096] Uplink beam management mainly includes the following steps:

[0097] S1. The network device sends SRS configuration information to the terminal device. The network device can configure one or more SRS resource sets (SRS resource sets) for uplink beam management for the terminal device. Each SRS resource set includes one or more SRS resources (SRS resource). Each SRS resource is associated with a beam. Each SRS resource includes an SRS signal. Uplink beam measurement can be performed by measuring the SRS signals corresponding to these SRS resources. The specific format of SRS resource configuration can be referred to the known protocol and will not be described in detail here.

[0098] S2. The terminal device transmits the corresponding SRS signal using the uplink transmission beam associated with the SRS resource in accordance with the configuration of each SRS resource.

[0099] S3. The network device measures each SRS signal sent by the terminal device, and measures the quality of each SRS resource.

[0100] The beam management process allows network devices and terminal devices to communicate using specific beams. The specific beam used is determined through beam measurement. For example, the network device can send reference signals via various beams, with one reference signal per beam. The terminal device then determines the best beam based on the measurements of these reference signals.

[0101] To reduce measurement complexity and overhead, two-level beam management can be used. The following describes two-level beam management in detail with reference to Figure 1.

[0102] FIG1 is a schematic diagram of the beam management process provided in an embodiment of the present application.

[0103] As shown in Figure 1, the network device can configure multiple SSB resources (such as SSB#0, SSB#1,...SSB#7) for the terminal device. Each SSB resource corresponds to a wider beam. The network device uses these wider beams to send corresponding SSBs respectively. The terminal device determines and reports the wide beam with better quality based on the measurement of the above SSBs. Furthermore, the network device configures multiple CSI-RS resources for the terminal device based on the above-mentioned wide beam, and each CSI-RS resource corresponds to a narrower beam, that is, the above-mentioned wide beam is subdivided into narrow beams, such as the wide beam corresponding to SSB#0 is subdivided into narrow beams corresponding to CSI-RS#0 to CSI-RS#31, the wide beam corresponding to SSB#1 is subdivided into narrow beams corresponding to CSI-RS#32 to CSI-RS#63,... The wide beam corresponding to SSB#7 is subdivided into narrow beams corresponding to CSI-RS#224 to CSI-RS#255. The network device sends the corresponding CSI-RS respectively through these narrower beams, and the terminal device determines and reports the narrow beam with better quality based on the measurement of the above-mentioned CSI-RS.

[0104] When the set of narrow beams to be measured by the terminal device changes, the network device can update the CSI-RS resource information to be measured by the terminal device through RRC messages, such as the beam, time domain information, and frequency domain information corresponding to the CSI-RS resource. The process of the network device updating resources through RRC messages is described in detail below with reference to Figure 2.

[0105] FIG2 is a schematic diagram of an existing resource update process provided in an embodiment of the present application.

[0106] As shown in Figure 2, the network device sends CSI-RS to the terminal device via the CSI-RS resources configured by the RRC message. The terminal device measures the CSI-RS and reports the measurement results to the network device. When the set of narrow beams to be measured by the terminal device changes, the network device updates the CSI-RS resources via the RRC message. Furthermore, the network device sends CSI-RS to the terminal device via the updated CSI-RS resources. The terminal device measures the CSI-RS and reports the measurement results to the network device.

[0107] The above method has a large delay, so the network device cannot promptly indicate the terminal device the updated CSI-RS resource information, resulting in the terminal device being unable to promptly select a better receiving beam, thereby causing a loss of transmission performance.

[0108] To solve the above problems, the present application provides a resource update method, which updates the reference signal resources of N reference signal resource groups in at least one reference signal resource group configured in the RRC message through DCI or MAC-CE. Compared with the RRC message, DCI and MAC-CE have lower latency, which enables the network device to indicate the updated reference signal resources to the terminal device in a more timely manner, thereby facilitating the terminal device to adjust the receiving beam in time, thereby improving transmission performance.

[0109] Before introducing the method provided in the embodiments of the present application, the following points are explained.

[0110] First, to clearly describe the technical solutions of the embodiments of this application, terms such as "first" and "second" are used in the embodiments of this application to distinguish between identical or similar items with substantially identical functions and effects. For example, the first beam indication mode and the second beam indication mode are used solely to distinguish between different beam indication modes and do not limit their order. Those skilled in the art will understand that terms such as "first" and "second" do not limit the quantity or execution order, and do not necessarily indicate that the terms are different.

[0111] Second, in the embodiments described herein, various terms and abbreviations, such as Channel State Information Reference Signal (CSI-RS), Sounding Reference Signal (SRS), Synchronization Signal Block (SSB), and Transmission Configuration Indicator (TCI), are provided for ease of description and should not limit this application in any way. This application does not exclude the possibility of defining other terms in existing or future protocols that can achieve the same or similar functions.

[0112] Third, the "protocol" involved in the embodiments of the present application may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, which is not limited in this application.

[0113] Fourth, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, where a, b, c can be single or multiple.

[0114] Fifth, the correspondences shown in the tables of this application can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values, which are not limited by this application. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences illustrated in each table. For example, in the tables of this application, the correspondences shown in certain rows may not be configured. For another example, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also use other names that can be understood by the communication device, and the values ​​or representations of the parameters may also use other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables.

[0115] Sixth, in this application, "indication" can include direct indication and indirect indication, and can also include explicit indication and implicit indication. The information indicated by a certain information (such as a resource update message) is called information to be indicated, such as one or more contents indicated by the resource update message in the embodiment of this application. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, directly indicating the information to be indicated, such as the information to be indicated itself or the index of the information to be indicated. It is also possible to indirectly indicate the information to be indicated by indicating other information, where there is an association between the other information and the information to be indicated; it is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the order of arrangement of each information can be pre-agreed (such as pre-defined by the protocol) to achieve the indication of specific information, thereby reducing the indication overhead to a certain extent. This application does not limit the specific method of indication. It is understandable that for the sender of the indication information, the indication information can be used to indicate the information to be indicated, and for the receiver of the indication information, the indication information can be used to determine the information to be indicated.

[0116] In addition, in the present application, beam information can be used to indicate a beam, time slot information can be used to indicate a time slot, and period information can be used to indicate a period.

[0117] To facilitate understanding of the resource update method provided in the embodiments of the present application, the system architecture of the resource update method provided in the embodiments of the present application will be described below. It is understandable that the system architecture described in the embodiments of the present application is to more clearly illustrate the technical solution of the embodiments of the present application and does not constitute a limitation on the technical solution provided in the embodiments of the present application.

[0118] FIG3 is a schematic diagram of the system architecture of the communication system provided in an embodiment of the present application.

[0119] As shown in a) in Figure 3, the communication system includes one or more network devices (one network device is taken as an example in the figure) and one or more terminal devices (two terminal devices are taken as an example in the figure). It can be seen that a network device can transmit data or control signaling to one or more terminal devices.

[0120] As shown in b) in Figure 3, the communication system includes one or more network devices (three network devices are taken as an example in the figure) and one or more terminal devices (one terminal device is taken as an example in the figure). It can be seen that multiple network devices can transmit data or control signaling to one terminal device.

[0121] In the communication system shown in FIG3 a) and FIG3 b), the terminal device can be mobile or fixed. The network device can be a micro base station, or a TRP or other type of network device, which is not limited in the embodiments of the present application. The network device can provide communication coverage for a specific geographical area and can communicate with the terminal device located in the coverage area (cell) through a wireless link.

[0122] Optionally, the communication system shown in the communication system may include more network devices, and the coverage area of ​​each network device may include other numbers of terminal devices, which is not limited in the embodiments of the present application.

[0123] FIG4 is a schematic diagram of communication performed by a communication device provided in an embodiment of the present application.

[0124] As shown in Figure 4, terminal device 10 logically includes multiple components, such as a processor 101, a memory 102, and a transceiver 103. Transceiver 103 includes a transmitter 1031, a receiver 1032, and an antenna 1033. Network device 20 logically includes multiple components, such as a processor 201, a memory 202, and a transceiver 203. Transceiver 203 includes a transmitter 2031, a receiver 2032, and an antenna 2033. Receiver 1032 can be used to receive information sent by network device 20 via antenna 1033, and transmitter 1031 can be used to send information to network device 20 via antenna 1033. Transmitter 2031 can be used to send information to terminal device 10 via antenna 2033, and receiver 2032 can be used to receive information sent by terminal device 10 via antenna 2033.

[0125] The resource updating method provided by this application will be described in detail below with reference to FIG5 .

[0126] Figure 5 is a schematic flow chart of a resource updating method 500 provided in an embodiment of the present application. The method 500 shown in Figure 5 includes steps 510 and 520, and each step will be described in detail below.

[0127] In step 510, the network device sends an RRC message to the terminal device, where the RRC message is used to configure at least one reference signal resource group. Accordingly, the terminal device receives the RRC message from the network device.

[0128] Each of the at least one reference signal resource group includes at least one reference signal resource. When a reference signal resource group includes one reference signal resource, the reference signal resource group is equivalent to the reference signal resource. When a reference signal resource group includes multiple reference signal resources, the reference signal resource group can be a reference signal resource set in the protocol, or a set with a smaller granularity than the reference signal resource set, such as a subset of the reference signal resource set.

[0129] It should be understood that in the present application, the reference signal resource may be a CSI-RS resource or other resources, such as a CS-RS resource, an SSB resource, a tracking reference signal (TRS) resource, an SRS resource, a phase tracking reference signal (PTRS) resource, a DMRS resource, a physical random access channel (PRACH) resource, etc. In the following embodiments, the reference signal resource is described using the CSI-RS resource as an example, but this should not constitute any limitation to the embodiments of the present application, and the CSI-RS resource may also be replaced by any of the above reference signal resources.

[0130] It should also be understood that in this application, based on different time domain behaviors (or resource types), reference signal resources can be divided into periodic (P) resources, semi-persistent (SP) resources, and aperiodic (AP) resources. Correspondingly, the types of reference signal resources include: periodic, semi-persistent, or aperiodic. The method provided in this application is applicable to periodic resources, semi-persistent resources, or aperiodic resources. For example, periodic CSI-RS resources or semi-persistent SRS resources.

[0131] Exemplarily, the network device sends an RRC message to the terminal device, where the RRC message is used to configure at least one reference signal resource group, each reference signal resource group including one or more reference signal resources. Accordingly, the terminal device receives the RRC message from the network device.

[0132] In step 520, the network device sends a resource update message to the terminal device, where the resource update message is used to update the reference signal resource information of the N reference signal resource groups in the at least one reference signal resource group. Accordingly, the terminal device receives the resource update message from the network device.

[0133] Wherein, N is a positive integer. The value of N may be less than or equal to the number of at least one reference signal resource group configured in the RRC message. The resource update message may be a DCI or a MAC-CE.

[0134] Exemplarily, the network device sends a MAC-CE to the terminal device, where the MAC-CE carries information for updating reference signal resources of N reference signal resource groups in the at least one reference signal resource group. Accordingly, the terminal device receives the MAC-CE from the network device.

[0135] It can be understood that the resource update message is used to update the information of the reference information resources of the above-mentioned N reference signal resource groups, which can be understood as updating certain parameters of the reference signal resources, but the index of the reference signal resources may not be updated, or the index of the reference signal resources may be updated at the same time. This application does not limit this.

[0136] The following describes the design of the resource update message in detail using MAC-CE as an example. However, this should not limit the embodiments of the present application in any way. The following design can also be applied to DCI, that is, the following design can also be a DCI signaling design, simply by replacing MAC-CE in the following design with DCI.

[0137] The resource update message can be used to indicate at least one of the following information: information for determining the value of N; the index of the above-mentioned N reference signal resource groups; the beam information of the reference signal resources in the above-mentioned N reference signal resource groups; whether the beam information of the reference signal resources is indicated in the above-mentioned resource update message; the time slot information of the reference signal resources in the above-mentioned N reference signal resource groups; or, the period information of the reference signal resources in the above-mentioned N reference signal resource groups.

[0138] It should be understood that in the following description, the field names included in the MAC-CE are for ease of distinction and do not limit the specific meanings of the various fields. Furthermore, the division of the various fields is merely illustrative and does not constitute any limitation on the embodiments of the present application. For example, one or more of the following information may also be represented by a field in the MAC-CE.

[0139] The above information will be explained in detail below.

[0140] 1. Information used to determine the value of N.

[0141] N refers to the number of reference signal resource groups updated in the above resource update message.

[0142] Exemplarily, the information used to determine the value of N may be a specific value of N, or other information corresponding to the specific value.

[0143] For example, the information used to determine the value of N can be represented by a field in the MAC-CE, such as the number of resource groups field, which is used to indicate the number of reference signal resource groups updated in the resource update message. It will be understood that when a reference signal resource group includes one reference signal resource, N can also be considered the number of reference signal resources updated in the resource update message, and the information used to determine the value of N can also be represented by the number of resources field. In other words, the reference signal resource group can be replaced by the reference signal resource, and the number of reference signal resource groups can be replaced by the number of reference signal resources. The following detailed description takes the reference signal resource group as an example.

[0144] When the value of N is represented by the resource group number field, the length of the field may be 1 bit or multiple bits (eg, 2 bits). The following describes several possible designs of the bytes and bits occupied by the field.

[0145] One possible design is that this field may occupy one or more bits of the first byte in the MAC-CE, such as the first bit, the second bit, the last bit, the first two bits, or the last two bits of the first byte in the MAC-CE. This field may also occupy one or more bits of the second byte in the MAC-CE, such as the first bit, the second bit, the last bit, the first two bits, or the last two bits of the second byte in the MAC-CE. This field may also occupy one or more bits of the third byte in the MAC-CE, such as the first bit, the second bit, the last bit, the first two bits, or the last two bits of the third byte in the MAC-CE. These are not listed here one by one, and this application does not specifically limit the bytes and specific bits occupied by the above fields.

[0146] Another possible design is that this field may occupy the first bit, the second bit, the last bit, the first two bits, or the last two bits of the byte used to carry the first reference signal resource group index. This field is used to indicate whether other reference signal resource groups exist in addition to the first reference signal resource group.

[0147] In another possible design, this field may occupy the first bit, the second bit, the last bit, the first two bits, or the last two bits of each byte carrying the reference signal resource group index. This field is used to indicate whether the next byte after the byte in which this field is located also carries the reference signal resource group index.

[0148] Optionally, when the first condition is met, the resource group quantity field exists; when the first condition is not met, the field does not exist. The absence of the field means that the terminal device can ignore the field, or the field is used for other purposes, or the field is reserved (does not indicate any information). This application does not limit this.

[0149] The first condition includes at least one or more of the following: the terminal device supports updating a reference signal resource group through a resource update message; the terminal device supports updating multiple reference signal resource groups at the same time through a resource update message; the terminal device supports switching between updating one reference signal resource group and updating multiple reference signal resource groups (that is, the terminal device supports a variable number of reference signal resource groups, that is, the value of N is variable); the network device supports updating one reference signal resource group through a resource update message (such as the network device configures this function through an RRC message); the network device supports updating multiple reference signal resource groups at the same time through a resource update message (such as the network device configures this function through an RRC message); the network device supports switching between updating one reference signal resource group and updating multiple reference signal resource groups (that is, the network device supports a variable number of reference signal resource groups, that is, the value of N is variable) (such as the network device configures this function through an RRC message).

[0150] The information used to determine the value of N may also be a resource group index. The value of N can be determined based on the number of resource group indexes. Furthermore, when a reference signal resource group includes one reference signal resource, the design of the resource group quantity field described above also applies to the design of the resource quantity field. In other words, the reference signal resource group and the reference signal resource are equivalent.

[0151] It should also be understood that the value of the field used to indicate the value of N may affect other fields. For example, taking the resource update message as MAC-CE as an example, the format of MAC-CE is shown in Table 2.

[0152] As shown in Table 2, each row represents a group of bytes. The MAC-CE includes N groups of bytes, each group of bytes including one or more bytes. Each group of bytes corresponds to a reference signal resource group. For example, the first reference signal resource group corresponds to one group of bytes, and the second reference signal resource group corresponds to another group of bytes. Each group of bytes corresponds to a reference signal resource group. It can be understood that this group of bytes is used to record information about the reference signal resource group, such as the reference signal resource group index, beam information of the reference signal resource group, and time slot information of the reference signal resource group. Based on the value of N, the terminal device can determine how many groups of the above bytes are included in the resource update message, or determine which of the multiple groups of bytes in the resource update message format are actually present and which are absent.

[0153] Exemplarily, this field indicates that information about N reference signal resource groups exists in the MAC-CE. In this case, the first N groups of bytes exist, while the remaining bytes do not. Specifically, the MAC-CE may include information corresponding to one or two reference signal resource groups. This field is used to indicate whether the resource update message specifically includes one or two reference signal resource groups. If one reference signal resource group is included, then only one group of bytes exists in the resource update message, e.g., only the first group of bytes exists, and the second group of bytes does not exist. If two reference signal resource groups are included, then two groups of bytes exist in the resource update message, i.e., both the first group of bytes and the second group of bytes exist.

[0154] Table 2

[0155] Optionally, the number of reference signal resource groups may be replaced with the number of reference signal resources, i.e., a field may be included in the resource update message to indicate the number of reference signal resources updated by the resource update message. The resource update message may include one of the above fields to indicate the number of reference signal resources updated by the resource update message. The resource update message may include multiple of the above fields, each corresponding to a reference signal resource group, indicating the number of reference signal resources in the reference signal resource group to be updated by the resource update message.

[0156] Optionally, both the indication information of the number of the reference signal resource groups and the number of the reference signal resources exist, that is, the resource update message includes the two types of indication information.

[0157] 2. Indexes of N reference signal resource groups.

[0158] The indexes of the N reference signal resource groups can be used to indicate the N reference signal resource groups updated by the resource update message. The indexes of the N reference signal resource groups can be indicated by the reference signal resource group index field. This field is used to indicate the index of the reference signal resource group, indicating which one or more reference signal resource groups the resource update message is used to update. The resource update message may include one or more reference signal resource group index fields. The index of the reference signal resource group may be an index of a resource setting, an index of a resource set, an index of a subset of a resource set, or a resource configuration index + a local index of a resource set within the resource configuration (e.g., if the resource configuration includes two resource sets, their local indexes are 0 and 1, respectively), a resource set index + a local index of a subset of a resource set (e.g., if the resource set includes two subsets, their local indexes are 0 and 1, respectively).

[0159] The index of the above-mentioned reference resource group can also be replaced by the index of the reference signal resource. For example, a reference signal resource group can include only one reference signal resource. In this case, it is not necessary to indicate the index of the reference signal resource group, but directly indicate the index of the reference signal resource. The reference signal resource index field is used to indicate the index of the reference signal resource, indicating which one or more reference signal resources the resource update message is used to update. The resource update message may include one or more reference signal resource index fields. The index of the reference signal resource can be a global index of the reference signal resource, that is, the index of the reference signal resource in all configured reference signal resources, or the index of the reference signal resource can be a local index of the reference signal resource, that is, the index of the reference signal resource in the reference signal resource group to which it belongs. It is also possible to indicate both the index of the reference signal resource group and the index of the reference signal resource, and jointly determine the reference signal resource in the reference signal resource group updated by the resource update message.

[0160] Optionally, the index of the reference signal resource group may be replaced with the index of the reference signal resource, i.e., a field may be included in the resource update message to indicate the index of the reference signal resource updated by the resource update message. The resource update message may include a set of the above fields to indicate the index of the reference signal resource updated by the resource update message. The resource update message may include multiple sets of the above fields, each set of fields corresponding to a reference signal resource group, indicating which reference signal resources in the reference signal resource group are to be updated by the resource update message.

[0161] Optionally, both the reference signal resource group index and the reference signal resource index indication information exist, that is, the resource update message includes the two types of indication information.

[0162] 3. Beam information of reference signal resources in N reference signal resource groups.

[0163] The beam information of the reference signal resources in the N reference signal resource groups can be used to indicate the beam of the reference signal resources in the N reference signal resource groups, that is, the beam used when transmitting a reference signal based on the reference signal resources in the N reference signal resource groups. In the present application, the beam of the reference signal resource can be a spatial filter, a spatial filter, a spatial parameter, a spatial parameter, a spatial setting, a spatial setting, QCL information, a QCL assumption, a QCL indication, a TCI state (including an uplink TCI state or a downlink TCI state), a spatial relationship, etc. The beam information of the reference signal resources in the above-mentioned N reference signal resource groups can specifically be an index of the above-mentioned information, for example, an index of the TCI state or an index of the QCL indication, etc.

[0164] Optionally, the beam information of the reference signal resources in the above-mentioned N reference signal resource groups is indicated by any one of the following methods: a first beam indication method or a second beam indication method; wherein, when the resource update message adopts the first beam indication method, for each reference signal resource group in the above-mentioned N reference signal resource groups, the resource update message indicates a corresponding beam information; when the resource update message adopts the second beam indication method, for each reference signal resource included in the above-mentioned N reference signal resource groups, the resource update message indicates a corresponding beam information.

[0165] In other words, in the first beam indication method, each of the N reference signal resource groups corresponds to one beam information; in the second beam indication method, each reference signal resource included in the N reference signal resource groups corresponds to one beam information.

[0166] Among them, for each of the above-mentioned N reference signal resource groups, a corresponding beam information is indicated. It can be understood that when transmitting reference signals based on all reference signal resources in a certain reference signal resource group, the beam corresponding to the indicated reference signal resource group can be used to transmit the reference signal. For each reference signal resource included in the above-mentioned N reference signal resource groups, a corresponding beam information is indicated. It can be understood that when transmitting reference signals based on each reference signal resource in the N reference signal resource groups, the beam corresponding to the reference signal resource can be used to transmit the reference signal. In other words, the reference signal resources and beams are combined to define the resources used to transmit reference signals from multiple dimensions (such as time domain, frequency domain, and spatial domain).

[0167] It can be understood that the above-mentioned beam indication method is only an example and should not constitute any limitation to the embodiments of the present application. For example, a third beam indication method may also be included. When the resource update message adopts the third beam indication method, for the above-mentioned N reference signal resource groups, the resource update message indicates one beam information. In other words, all reference signal resources in the N reference signal resource groups adopt this beam. For another example, a fourth beam indication method may also be included. When the resource update message adopts the fourth beam indication method, for each reference signal resource group in the above-mentioned N reference signal resource groups, the resource update message indicates multiple beam information. Each beam information corresponds to part of the reference signal resources in the reference signal resource group. In other words, when transmitting reference signals based on part of the reference signal resources in a certain reference signal resource group, the beam corresponding to the indicated part of the reference signal resources can be used to transmit the reference signals.

[0168] It is understood that the specific beam indication method used may affect the number of bytes of beam information used to indicate reference signal resources in the resource update message. For example, taking the resource update message as a MAC-CE, the format of the MAC-CE is shown in Table 3. The following, in conjunction with Table 3, details the impact of the beam indication method on the number of bytes of beam information used to indicate reference signal resources.

[0169] As shown in Table 3, each row represents a byte, and each reference signal resource group corresponds to multiple bytes. Each byte corresponds to a reference signal resource in the reference signal resource group and is used to indicate the beam information of the reference signal resource. As shown in Table 3, the first beam information is the beam information corresponding to the first reference signal resource and occupies one byte. The second beam information is the beam information corresponding to the second reference signal resource and occupies another byte. The third beam information is the beam information corresponding to the third reference signal resource and occupies another byte, and so on. When the first beam indication method is used, the first byte of the multiple bytes is present, and the other bytes are not present. When the second beam indication method is used, each byte of the multiple bytes is present. Alternatively, the MAC-CE includes multiple bytes, each byte corresponding to the multiple reference signal resources indicated by the MAC-CE corresponds to a reference signal resource. When the third beam indication method is used, the first byte of the multiple bytes is present, and the other bytes are not present. When the second beam indication method is used, each byte of the multiple bytes is present.

[0170] Table 3

[0171] Optionally, the resource update message is also used to indicate a beam indication mode, which includes a first beam indication mode or a second beam indication mode.

[0172] Multiple beam indication modes have been mentioned above. The specific beam indication mode used can be indicated by beam indication mode information. In other words, the beam indication mode information is used to indicate the beam indication mode used by the resource update message. For example, the beam indication mode information can indicate one of the first beam indication mode and the second beam indication mode, or one of the third beam indication mode and the second beam indication mode. This is not limited in this application. The beam indication mode information can be, for example, an index of the beam indication mode. Different beam indication modes correspond to different indexes, and the index is used to indicate the beam indication mode used.

[0173] Beam indication mode information can be indicated by a beam indication mode field. For example, a resource update message may include a beam indication mode field to indicate the beam indication mode used for the reference signal resources in the resource update message. For another example, a resource update message may include multiple beam indication mode fields, each corresponding to a reference signal resource group, to indicate the beam indication mode used for that reference signal resource group.

[0174] Optionally, the length of this field may be 1 bit or multiple bits (eg, 2 bits). Several possible designs of the bytes and bits occupied by this field are described below.

[0175] In one possible design, this field may occupy one or more bits of the first byte in the MAC-CE, such as the first bit, the second bit, the last bit, the first two bits, or the last two bits of the first byte in the MAC-CE. This field may also occupy one or more bits of the second byte in the MAC-CE, such as the first bit, the second bit, the last bit, the first two bits, or the last two bits of the second byte in the MAC-CE. This field may also occupy one or more bits of the third byte in the MAC-CE, such as the first bit, the second bit, the last bit, the first two bits, or the last two bits of the third byte in the MAC-CE.

[0176] Another possible design is that this field may occupy the first bit, or the second bit, or the last bit, or the first two bits, or the last two bits in the byte used to carry the reference signal resource group index.

[0177] Another possible design is that this field may also occupy the first byte of multiple bytes corresponding to a reference signal resource group for indicating beam information. For example, if this field occupies the first bit, the second bit or the last bit of the first byte of multiple bytes corresponding to a reference signal resource group for indicating beam information. This field is used to indicate whether, in addition to the first byte, there are other bytes in the resource update message for indicating the beam information of the reference signal resources in the reference signal resource group. For example, taking the resource update message as MAC-CE as an example, the format of MAC-CE is shown in Table 4. The following will describe in detail in conjunction with Table 4 how this field indicates, in addition to the first byte, whether there are other bytes for indicating the beam information of the reference signal resources in the reference signal resource group.

[0178] As shown in Table 4, each row represents a byte, and each column represents a bit. For example, the byte used to indicate the first beam information is a byte (denoted as the first byte), which includes multiple bits. The byte used to indicate the second beam information is another byte, which includes multiple bits. The byte used to indicate the first beam information is another byte, and so on. The beam indication mode field (i.e., field E in the table) occupies the first bit of the first byte and can be used to indicate whether, in addition to the first byte, there are subsequent bytes used to indicate the beam information of the reference signal resources in the reference signal resource group. Alternatively, one such field exists in each of the multiple bytes used to indicate beam information corresponding to a reference signal resource group, and is used to indicate whether the next byte is also used to indicate beam information of the reference signal resources.

[0179] Table 4

[0180] 4. Whether the resource update message indicates the beam information of the reference signal resource.

[0181] Whether the resource update message indicates the beam information of the reference signal resource, or in other words, whether the resource update message includes the beam information of the reference signal resource.

[0182] Whether the beam information of the reference signal resource is indicated in the resource update message can be indicated by the beam existence indication field. The resource update message may include one such field to indicate whether the beam information is indicated in the resource update message. The resource update message may include multiple such fields, each corresponding to a reference signal resource group, to indicate whether beam information corresponding to the reference signal resource in the reference signal resource group exists. Alternatively, the resource update message may include multiple such fields, each corresponding to a reference signal resource, to indicate whether beam information corresponding to the reference signal resource exists.

[0183] The length of this field may be 1 bit or multiple bits (eg, 2 bits). The following describes several possible designs of the bytes and bits occupied by this field.

[0184] In one possible design, this field may occupy one or more bits of the first byte in the MAC-CE, such as the first bit, the second bit, the last bit, the first two bits, or the last two bits of the first byte in the MAC-CE. This field may also occupy one or more bits of the second byte in the MAC-CE, such as the first bit, the second bit, the last bit, the first two bits, or the last two bits of the second byte in the MAC-CE. This field may also occupy one or more bits of the third byte in the MAC-CE, such as the first bit, the second bit, the last bit, the first two bits, or the last two bits of the third byte in the MAC-CE.

[0185] Another possible design is that this field may occupy the first bit, or the second bit, or the last bit, or the first two bits, or the last two bits in the byte used to carry the reference signal resource group index.

[0186] This field can also be combined with the function of the beam indication mode field, that is, a single field can be used to indicate the number X of beams corresponding to the resource update message, or the number X of beams corresponding to each reference signal resource group in the resource update message. X can be equal to 0, indicating that no beam information exists. X can also be equal to 1, indicating that only one beam information exists. When X is equal to 1, the first beam indication mode or the third beam indication mode described above can be used. X can also be a number greater than 1, indicating that multiple beam information exists, such as one beam information corresponding to each reference signal resource. In this case, the second beam indication mode described above can be used.

[0187] Optionally, when the second condition is met, the beam presence indication field is present; when the second condition is not met, the beam presence indication field is absent. The absence of the field means that the terminal device can ignore the field, or the field is used for other purposes, or the field is reserved (does not indicate any information).

[0188] The second condition includes at least one or more of the following: the terminal device supports updating the information of a reference signal resource group through a resource update message; the terminal device supports updating the information of multiple reference signal resource groups simultaneously through a resource update message; the terminal device supports switching between updating one reference signal resource group and updating multiple reference signal resource groups (that is, the terminal device supports a variable number of reference signal resource groups, that is, the value of N is variable); the network device supports updating the information of a reference signal resource group through a resource update message (such as the network device configures this function through an RRC message); the network device supports updating the information of multiple reference signal resource groups simultaneously through a resource update message (such as the network device configures this function through an RRC message). C message is configured for this function); the network device supports switching between updating one reference signal resource group and updating multiple reference signal resource groups (that is, the network device supports a variable number of reference signal resource groups, that is, the value of N is variable); the terminal device supports the use of a common beam for CSI-RS resources; the network device supports the use of a common beam for CSI-RS resources (if the network device configures this function through an RRC message); the terminal device supports updating the information of reference signal resources in the reference signal resource group through a resource update message; the network device supports updating the information of reference signal resources in the reference signal resource group through a resource update message (if the network device configures this function through an RRC message).

[0189] In the present application, a common beam refers to a beam uniformly adopted by multiple uplink and downlink channels or reference signals. If the CSI-RS resource adopts a common beam, then the beam of the CSI-RS resource does not need to be specifically indicated by the above-mentioned resource update message. If the CSI-RS resource adopts a common beam, when the network device sends a common beam indication signaling to the terminal device to indicate a new common beam, the common beam will take effect at the first moment. The first moment may refer to the moment obtained by adding a time offset to the moment when the response message corresponding to the common beam indication signaling is sent. On the other hand, other information of the CSI-RS, such as time slot information, needs to be indicated by the resource update message. The resource information indicated by the resource update message will take effect at the second moment. The second moment may be the moment obtained by adding a time offset to the moment when the response message corresponding to the resource update message is sent. It can be stipulated that the first moment and the second moment are the same moment, that is, the network device needs to coordinate the sending time of the common beam indication signaling and the sending time of the resource update message so that the first moment and the second moment are consistent. Alternatively, it can be stipulated that the indicated common beam and the indicated resource information are uniformly effective at the later of the first moment and the second moment. For example, the second moment is later than the first moment. In this case, the common beam indicated by the common beam indication signaling will not take effect at the first moment, but will take effect only at the second moment.

[0190] 5. Time slot information of reference signal resources in N reference signal resource groups.

[0191] The time slot information of the reference signal resources in the N reference signal resource groups is used to indicate the time slot of the reference signal resources. The time slot information can be indicated by the time slot information indication field. One such field may be present in the resource update message to determine the time slot information of all reference signal resources. Multiple such fields may also be present, each corresponding to a reference signal resource group and used to determine the time slot information of the reference signal resources in that reference signal resource group. Multiple such fields may also be present, each corresponding to a reference signal resource and used to determine the time slot information corresponding to that reference signal resource.

[0192] This field can be 8 bits long. These 8 bits occupy a whole byte. The value range of this field can be an integer from 0 to 255, an integer from -127 to 128, or an integer from -128 to 127.

[0193] The length of this field may also be 10 bits. These 10 bits occupy an entire byte and an additional 2 bits. The additional 2 bits may be 2 bits in the byte where a reference signal resource group index is located (e.g., the byte where the first reference signal resource group index is located, or the byte where the index of the reference signal resource group corresponding to this field is located) (e.g., the reference signal resource group index occupies 6 bits, and the additional 2 bits are used for the time slot information of the reference signal resource), thereby saving bit overhead.

[0194] For example, the time slot information corresponding to a reference signal resource group occupies 10 bits, which is 8 bits of a byte plus 2 bits of the byte containing the reference signal resource group index. The value range of this field can be an integer from 0 to 1023, an integer from -511 to 512, or an integer from -512 to 511. The value range of this field can also be an integer from 0 to 639, an integer from -319 to 320, or an integer from -320 to 319.

[0195] Optionally, the time slot information of the reference signal resources in the above-mentioned N reference signal resource groups is indicated by any one of the following methods: a first time slot indication method or a second time slot indication method; wherein, when the resource update message adopts the first beam time slot method, for each reference signal resource group in the above-mentioned N reference signal resource groups, the resource update message indicates a corresponding time slot information; when the resource update message adopts the second time slot indication method, for each reference signal resource included in the above-mentioned N reference signal resource groups, the resource update message indicates a corresponding time slot information.

[0196] In other words, in the first time slot indication mode, each reference signal resource group in the above N reference signal resource groups corresponds to a time slot information; in the second time slot indication mode, each reference signal resource included in the above N reference signal resource groups corresponds to a time slot information.

[0197] The indication of corresponding time slot information for each of the N reference signal resource groups can be understood as follows: when transmitting reference signals based on all reference signal resources in a reference signal resource group, the indicated time slot information corresponding to the reference signal resource group can be used. The indication of corresponding time slot information for each reference signal resource included in the N reference signal resource groups can be understood as follows: when transmitting reference signals based on each reference signal resource in the N reference signal resource groups, the time slot information corresponding to the reference signal resource can be used. In other words, the resources used to transmit reference signals are defined from a time domain perspective.

[0198] It will be understood that the above-mentioned time slot indication method is merely an example and should not constitute any limitation on the embodiments of the present application. For example, a third time slot indication method may also be included. When the resource update message adopts the third time slot indication method, one time slot information is indicated for the above-mentioned N reference signal resource groups. In other words, all reference signal resources in the N reference signal resource groups share one time slot information. For another example, a fourth time slot indication method may also be included. When the resource update message adopts the fourth time slot indication method, multiple time slot information is indicated for each reference signal resource group in the above-mentioned N reference signal resource groups, and each time slot information is used for part of the reference signal resources in the reference signal resource group.

[0199] Optionally, the specific time slot indication method used may affect the number of bytes used to indicate time slot information in the resource update message. For example, taking the resource update message as a MAC-CE, the format of the MAC-CE is shown in Table 5. The following details the impact of the time slot indication method on the number of bytes used to indicate time slot information in the resource update message, in conjunction with Table 5.

[0200] As shown in Table 5, each row represents a byte, and each reference signal resource group corresponds to multiple bytes, where each byte corresponds to a reference signal resource in the reference signal resource group and is used to indicate the time slot information corresponding to the reference signal resource. For example, the first reference signal resource corresponds to the first byte, which is used to indicate the time slot information corresponding to the reference signal resource (i.e., the first time slot information). The second reference signal resource corresponds to the second byte, which is used to indicate the time slot information corresponding to the reference signal resource (i.e., the second time slot information). The third reference signal resource corresponds to the third byte, which is used to indicate the time slot information corresponding to the reference signal resource (i.e., the third time slot information). And so on. When the first time slot indication method is used, the first byte of the multiple bytes is present, and the other bytes are not present. When the second time slot indication method is used, each byte of the multiple bytes is present. Alternatively, the MAC-CE includes multiple bytes, corresponding to multiple reference signal resources updated by the MAC-CE, each byte corresponding to a reference signal resource. When the third time slot indication method is used, the first byte of the multiple bytes is present, and the other bytes are not present. When the second time slot indication mode is adopted, each byte in the multiple bytes exists.

[0201] Table 5

[0202] Optionally, the terminal device determines the time slot corresponding to each reference signal resource based on the time slot information.

[0203] One possible design is that the time slot information can be a relative time slot offset; when the resource update message adopts the first time slot indication method, the relative time slot offset corresponding to each reference signal resource group is used to update the time slot position of all reference signal resources in each reference signal resource group; or, when the resource update message adopts the second time slot indication method, the relative time slot offset corresponding to each reference signal resource is used to update the time slot position of each reference signal resource.

[0204] The relative time slot offset indicates a forward or backward shift based on the current time slot position. Based on the relative time slot offset, the terminal device shifts the time slots of each reference signal resource forward or backward based on the current time slot position to obtain the time slots corresponding to each reference signal resource.

[0205] In one example, if the time slot information is indicated using the first time slot indication method, that is, one reference signal resource group corresponds to one relative time slot offset, the terminal device offsets all reference signal resources in the reference signal resource group based on the current time slot position according to the relative time slot offset corresponding to the reference signal resource group, thereby determining the time slot of each reference signal resource in the reference signal resource group.

[0206] In another example, if the time slot information is indicated using the second time slot indication method, that is, each reference signal resource indicates a relative time slot offset, the terminal device determines the time slot of each reference signal resource according to the relative time slot offset corresponding to each reference signal resource.

[0207] As another example, if the time slot information is indicated using the third time slot indication method, that is, a relative time slot offset is indicated for all reference signal resources, the terminal device determines the time slot of each reference signal resource based on the relative time slot offset.

[0208] Another possible design is that the time slot information indicated above is absolute time slot information. The absolute time slot information is used to indicate a specific time slot. The terminal device can determine the time slot corresponding to each reference signal resource based on the specific time slot.

[0209] In one example, if the time slot information is indicated using the first time slot indication method, that is, a time slot is indicated for a resource group, then the indicated time slot is used as the time slot of a reference signal resource (such as the first reference signal resource) in the reference signal resource group. The time slots of other reference signal resources can be determined by the time slot relationship between other reference signal resources and the one reference signal resource. For example, if the time slot corresponding to another reference signal resource is the next time slot of the time slot corresponding to the one reference signal resource, then the terminal device can determine that the time slot of the other reference signal resource is the next time slot of the time slot indicated above. The time slot relationship between reference signal resources can adopt the time slot relationship of the initial configuration.

[0210] In another example, if the time slot information is indicated using the second time slot indication manner, that is, one time slot is indicated for each reference signal resource, then each reference signal resource directly uses the indicated time slot.

[0211] As another example, if the time slot information is indicated using a third time slot indication method, that is, a time slot is indicated for all reference signal resources, then the indicated time slot is used as the time slot of one reference signal resource (such as the first reference signal resource) among all the reference signal resources. The time slots of other reference signal resources can be determined by the time slot relationship between other reference signal resources and the one reference signal resource. For example, if the time slot corresponding to another reference signal resource is the next time slot of the time slot corresponding to the one reference signal resource, then the terminal device can determine that the time slot of the other reference signal resource is the next time slot of the time slot indicated above. The time slot relationship between reference signal resources can adopt the time slot relationship of the initial configuration.

[0212] As mentioned above, multiple time slot indication modes have been mentioned. The specific time slot indication mode to be used can be indicated by time slot indication mode information. In other words, the time slot indication mode information is used to indicate the time slot indication mode used by the resource update message. For example, the time slot indication mode information can indicate one of the first time slot indication mode and the second time slot indication mode, or one of the third time slot indication mode and the second time slot indication mode, which is not limited in this application. The time slot indication mode information can be, for example, an index of the time slot indication mode. Different time slot indication modes correspond to different indexes, and the index is used to indicate the time slot indication mode used.

[0213] The time slot indication mode information can be indicated by a time slot indication mode field. For example, a resource update message may include a time slot indication mode field to indicate which time slot indication mode is used for the reference signal resources in the resource update message. For another example, a resource update message may include multiple time slot indication mode fields, each corresponding to a reference signal resource group, to indicate which time slot indication mode is used for that reference signal resource group.

[0214] The length of this field may be 1 bit or multiple bits (eg, 2 bits). The following describes several possible designs of the bytes and bits occupied by this field.

[0215] In one possible design, this field may occupy one or more bits of the first byte in the MAC-CE, such as the first bit, the second bit, the last bit, the first two bits, or the last two bits of the first byte in the MAC-CE. This field may also occupy one or more bits of the second byte in the MAC-CE, such as the first bit, the second bit, the last bit, the first two bits, or the last two bits of the second byte in the MAC-CE. This field may also occupy one or more bits of the third byte in the MAC-CE, such as the first bit, the second bit, the last bit, the first two bits, or the last two bits of the third byte in the MAC-CE.

[0216] Another possible design is that this field may occupy the first bit, or the second bit, or the last bit, or the first two bits, or the last two bits in the byte used to carry the reference signal resource group index.

[0217] Another possible design is that this field may also occupy the first bit of multiple bytes corresponding to a reference signal resource group for indicating time slot information. For example, this field may occupy the first bit, the second bit, or the last bit of the first byte of multiple bytes corresponding to a reference signal resource group for indicating time slot information. This field may also be used to indicate whether, in addition to the first byte, there are other bytes in the resource update message for indicating the time slot of the reference signal resource in the reference signal resource group. For example, taking the resource update message as a MAC-CE, the format of the MAC-CE is shown in Table 6. The following will describe in detail in conjunction with Table 6 how the time slot indication mode field indicates, in addition to the first byte, whether there are other bytes for indicating the time slot of the reference signal resource in the reference signal resource group.

[0218] As shown in Table 6, each row represents a byte and each column represents a bit. For example, the byte used to indicate the first time slot information is a byte (denoted as the first byte), which includes multiple bits. The byte used to indicate the second time slot information is another byte (denoted as the second byte), which includes multiple bits. The byte used to indicate the third time slot information is another byte (denoted as the third byte), which includes multiple bits, and so on. The time slot indication mode field (i.e., field E in the table) occupies the first bit of the first byte and can be used to indicate whether, in addition to the first byte, there are subsequent bytes used to indicate the time slot information of the reference signal resources in the reference signal resource group. Alternatively, one of the multiple bytes used to indicate time slot information corresponding to a reference signal resource group contains this field to indicate whether the next byte is also used to indicate the time slot information of the reference signal resources.

[0219] Table 6

[0220] Optionally, this field can be combined with the beam indication mode field to form a field indicating the beam and time slot indication mode, including the following modes:

[0221] Method 1: According to method 1, for each reference signal resource group in the above-mentioned N reference signal resource groups, the above-mentioned resource update message indicates a corresponding beam information and / or a time slot information, and the beam information and / or a time slot information is used for all reference signal resources in the reference signal resource group.

[0222] Method 2: According to method 2, for each reference signal resource included in the above-mentioned N reference signal resource groups, the above-mentioned resource update message indicates a corresponding beam information and / or a time slot information, and the beam information and / or time slot information is used for the reference signal resource.

[0223] Method three: According to method three, for the above-mentioned N reference signal resource groups, the above-mentioned resource update message indicates a beam information and / or a time slot information, and the beam information and / or time slot information is used for all reference signal resources in the N reference signal resource groups.

[0224] Method 4: According to method 4, for each of the above-mentioned N reference signal resource groups, the above-mentioned resource update message indicates multiple beam information and / or multiple time slot information, and each beam information and / or time slot information is used for part of the reference signal resources in the reference signal resource group.

[0225] The specific method to be used may be indicated by an RRC message, MAC-CE, or DCI. It may also be indicated by other fields in the resource update message. This application does not limit this.

[0226] It can be understood that the specific method adopted may affect the number of bytes used to indicate the beam and / or time slot in the resource update message. For example, each reference signal resource group corresponds to multiple groups of bytes, where each group of bytes corresponds to a reference signal resource in the reference signal resource group, and is used to indicate the beam information and / or time slot information corresponding to the reference signal resource. When method one is adopted, the first group of bytes in the multiple groups of bytes exists, and the other groups of bytes do not exist. When method two is adopted, each group of bytes in the multiple groups of bytes exists. Alternatively, the MAC-CE includes multiple groups of bytes, each group of bytes corresponds to a reference signal resource, and is used to indicate the beam information and / or time slot information corresponding to the reference signal resource. When method three is adopted, the first group of bytes in the multiple groups of bytes exists, and the other bytes do not exist. When method two is adopted, each byte in the multiple groups of bytes exists.

[0227] 6. Periodic information of reference signal resources in N reference signal resource groups.

[0228] The period information may be used to indicate the period of the reference signal resources in the N reference signal resource groups. The period information may be, for example, a time period. The period information of the reference signal resources in the N reference signal resource groups may be indicated by a period information field.

[0229] Optionally, the periodic information of the reference signal resources in the above-mentioned N reference signal resource groups can be indicated in any one of the following ways: a first periodic indication way or a second periodic indication way; wherein, when the resource update message adopts the first periodic indication way, for each reference signal resource group in the above-mentioned N reference signal resource groups, the resource update message indicates a corresponding periodic information; when the resource update message adopts the second periodic indication way, for each reference signal resource included in the above-mentioned N reference signal resource groups, the resource update message indicates a corresponding periodic information.

[0230] In other words, in the first period indication mode, each of the N reference signal resource groups corresponds to one period information; in the second period indication mode, each reference signal resource included in the N reference signal resource groups corresponds to one period information.

[0231] Among them, for each of the N reference signal resource groups, a corresponding periodicity information is indicated. It can be understood that when a reference signal is transmitted based on all reference signal resources in a certain reference signal resource group, the reference signal can be transmitted using the period corresponding to the indicated reference signal resource group. For each reference signal resource included in the N reference signal resource groups, a corresponding periodicity information is indicated. It can be understood that when a reference signal is transmitted based on each reference signal resource in the N reference signal resource groups, the reference signal can be transmitted using the indicated periodicity. In other words, the reference signal resource and periodicity are combined to define the resources used to transmit the reference signal from multiple dimensions (such as the time domain, the frequency domain, and the spatial domain).

[0232] It can be understood that the above-mentioned period indication method is only an example and should not constitute any limitation to the embodiments of the present application. For example, a third period indication method may also be included. When the resource update message adopts the third period indication method, for the above-mentioned N reference signal resource groups, the resource update message indicates a period information. In other words, all reference signal resources in the N reference signal resource groups adopt this period. For another example, a fourth period indication method may also be included. When the resource update message adopts the fourth period indication method, for each reference signal resource group in the above-mentioned N reference signal resource groups, the resource update message indicates multiple period information. Each period information corresponds to part of the reference signal resources in the reference signal resource group. In other words, when transmitting reference signals based on part of the reference signal resources in a certain reference signal resource group, the reference signals may be transmitted using the period corresponding to the indicated part of the reference signal resources.

[0233] It is understood that the above-mentioned periodic indication mode is only an example and should not constitute any limitation to the embodiments of the present application. In addition, the network device can also indicate to the terminal device which periodic indication mode to adopt, such as the first periodic indication mode or the second periodic indication mode.

[0234] Optionally, the resource update message is also used to indicate a power offset.

[0235] The power offset can be indicated by the Power Offset field. This field may be present in the resource update message, one for determining the power offset for all reference signal resources. Multiple fields may also be present, one for each reference signal resource group, for determining the power offset for the reference signal resources in that reference signal resource group. Multiple fields may also be present, one for each reference signal resource, for determining the power offset for that reference signal resource.

[0236] Optionally, the resource update message is also used to indicate a time domain symbol.

[0237] The time domain symbol can be indicated by the time domain symbol field. This field may exist in the resource update message, used to determine the time domain symbols for all reference signal resources. Multiple fields may exist, each corresponding to a reference signal resource group, and used to determine the time domain symbols for the reference signal resources in that reference signal resource group. Multiple fields may also exist, each corresponding to a reference signal resource, and used to determine the time domain symbol corresponding to that reference signal resource.

[0238] Optionally, the resource update message is also used to indicate a frequency domain position.

[0239] The frequency domain position can be indicated by the frequency domain position information field. This field may be present in the resource update message, used to determine the frequency domain position of all reference signal resources. Multiple fields may also be present, each corresponding to a reference signal resource group, used to determine the frequency domain position of the reference signal resources in that reference signal resource group. Multiple fields may also be present, each corresponding to a reference signal resource, used to determine the frequency domain position corresponding to that reference signal resource.

[0240] Optionally, the resource update message is further used to indicate the cell for which the reference signal resources are updated. For example, the resource update message may include a cell index, and the cell index is used to indicate the cell for which the reference signal resources are updated.

[0241] The cell index can be indicated by the cell index field. This field indicates which cell's reference signal resources the resource update message is used to update. The cell index indicated by this field can be the index of the serving cell or the index of a non-serving cell. A serving cell is a cell configured for data transmission by a terminal device. A non-serving cell is a cell other than the serving cell.

[0242] This field can also be used to indicate a cell group, indicating which cell group's reference signal resources this resource update message is used to update. Specifically, this field can indicate the index of a cell group. Alternatively, this field can indicate the index of a cell. If the cell belongs to a cell group, then the resource update message applies to all cells in the cell group.

[0243] Optionally, the resource update message is further used to indicate a bandwidth part (BWP). For example, the resource update message may include a BWP index, where the BWP index is used to indicate the BWP of the updated reference signal resource.

[0244] The BWP index can be indicated by the BWP index field. Each cell can include one or more BWPs, and the BWP index is used to indicate a specific BWP. This field can indicate which BWP's reference signal resources the resource update message is used to update.

[0245] Optionally, the above-mentioned RRC message is also used to configure one or more of the following: whether to update the information of the reference signal resources of N reference signal resource groups through the resource update message; whether for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding beam information; whether for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding beam information; whether for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; whether for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; whether the value of N is supported to be variable; or whether the reference signal resources of the N reference signal resource groups use a common beam.

[0246] In other words, the network device can also configure the above one or more information to the terminal device through the RRC message. Among them, the network device can also configure the terminal device whether the resource update message indicates a corresponding beam information for each reference signal resource group in the N reference signal resource groups (that is, using the first beam indication method), or whether the resource update message indicates a corresponding beam information for each reference signal resource included in the N reference signal resource groups (that is, using the second beam indication method). The network device can also configure the terminal device whether the resource update message indicates a corresponding time slot information for each reference signal resource group in the N reference signal resource groups (that is, using the first time slot indication method), or whether the resource update message indicates a corresponding time slot information for each reference signal resource included in the N reference signal resource groups (that is, using the second time slot indication method).

[0247] Optionally, before sending the RRC message to the terminal device, the above method also includes: the network device receives terminal capability information, and the terminal capability information is used to indicate one or more of the following: whether it supports updating the information of the reference signal resources of N reference signal resource groups through the resource update message; whether it supports that for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding beam information; whether it supports that for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding beam information; whether it supports that for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; whether it supports that for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; the supported value of N; whether it supports that the value of N is variable; or, whether it supports that the reference signal resources of the N reference signal resource groups use a common beam.

[0248] Among them, regarding whether it supports that for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding beam information and whether it supports that for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding beam information, the terminal device may also report whether it supports that for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding beam information, or supports that for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding beam information.

[0249] Regarding the two items of whether it supports the resource update message indicating a corresponding time slot information for each reference signal resource group in the N reference signal resource groups and whether it supports the resource update message indicating a corresponding time slot information for each reference signal resource included in the N reference signal resource groups, the terminal may also report whether it supports the resource update message indicating a corresponding time slot information for each reference signal resource group in the N reference signal resource groups; or supports the resource update message indicating a corresponding time slot information for each reference signal resource included in the N reference signal resource groups.

[0250] It should be understood that the various information included in the above resource update message is only an example and should not constitute any limitation to the embodiments of the present application. In actual applications, the resource update message may also include other information.

[0251] FIG6 is a detailed flow chart of the resource updating method provided in an embodiment of the present application. The detailed process of the resource updating method will be described below in conjunction with FIG6.

[0252] In step 610, the terminal device reports the terminal capability information to the network device. Correspondingly, the network device receives the terminal capability information from the terminal device. For an explanation of the terminal capability information, please refer to the above text and will not be repeated here.

[0253] In step 620, the network device sends an RRC message to the terminal, which is used to configure at least one reference signal resource group. Correspondingly, the terminal device receives the RRC message from the network device. For a detailed description of this step, please refer to step 510 and will not be described in detail here.

[0254] In step 630, the network device sends a resource update message to the terminal device. This resource update message is used to update the reference signal resource information of the N reference signal resource groups in the at least one reference signal resource group. Accordingly, the terminal device receives the resource update message from the network device. A detailed description of this step can be found in step 520 and will not be repeated here.

[0255] In step 640, the network device sends a reference signal to the terminal device based on the resource update message. Correspondingly, the terminal device receives the reference signal.

[0256] The network device can send a reference signal to the terminal device based on the information of the reference signal resources of the reference signal resource group indicated by the resource update message. Correspondingly, the terminal device can receive the reference signal based on the information of the reference signal resources of the reference signal resource group indicated by the above resource update message. It should be understood that the embodiment of Figure 6 takes the example of the network device sending a reference signal to the terminal device and the terminal device performing measurements, but this should not constitute any limitation to the embodiments of the present application. For example, the method provided in the present application can also be applied to the measurement of uplink reference signals, that is, the terminal device sends a reference signal to the network device based on the resource update message, and the network device measures it.

[0257] In step 650, the terminal device measures the reference signal to obtain a measurement result.

[0258] In step 660, the terminal device reports the measurement result to the network device.

[0259] After obtaining the measurement results, the terminal device reports the measurement results to the network device. For the parameters included in the measurement results, please refer to the above explanation and will not be repeated here.

[0260] In the above technical solution, the reference signal resources of N reference signal resource groups in at least one reference signal resource group configured in the RRC message are updated through DCI or MAC-CE. Compared with the RRC message, DCI and MAC-CE have lower latency, which enables the network device to indicate the updated reference signal resources to the terminal device more promptly, thereby facilitating the terminal device to adjust the receiving beam in time, thereby improving transmission performance.

[0261] 7 to 10 are schematic structural diagrams of possible communication devices provided in embodiments of the present application.

[0262] FIG7 is a schematic block diagram of a communication device 700 provided in an embodiment of the present application.

[0263] As shown in FIG. 7 , the communication device 700 includes a first transceiver unit 710 and a second transceiver unit 720 .

[0264] The above-mentioned device 700 can be used to implement the functions of the terminal device in the method embodiment shown in Figure 5 or Figure 6, or the above-mentioned device 700 is used to implement the functions of the network device in the method embodiment shown in Figure 5 or Figure 6.

[0265] When the apparatus 700 is used to implement the function of the terminal device in the method embodiment shown in FIG5 , the first transceiver unit 710 may be used to receive an RRC message from a network device, the RRC message being used to configure at least one reference signal resource group, each reference signal resource group in the at least one reference signal resource group including information of at least one reference signal resource; the second transceiver unit 720 may be used to receive a resource update message from a network device, the resource update message being used to update information of reference signal resources of N reference signal resource groups in the at least one reference signal resource group, where N is a positive integer and the resource update message is DCI or MAC-CE.

[0266] When the device 700 is used to implement the function of the network device in the method embodiment shown in Figure 5, the first transceiver unit 710 can be used to send an RRC message to the terminal device, where the RRC message is used to configure at least one reference signal resource group, and each reference signal resource group in the at least one reference signal resource group includes at least one reference signal resource; the second transceiver unit 720 can be used to send a resource update message to the terminal device, where the resource update message is used to update the information of reference signal resources of N reference signal resource groups in the at least one reference signal resource group, where N is a positive integer and the resource update message is DCI or MAC-CE.

[0267] A more detailed description of the first transceiver unit 710 and the second transceiver unit 720 can be directly obtained by referring to the relevant description in the method embodiment shown in Figure 5 or Figure 6, and is not repeated here.

[0268] It should be understood that the division of units in the embodiments of the present application is illustrative and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present application may be integrated into a single processor, or may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0269] Figure 8 is another schematic block diagram of a communication device 800 provided in an embodiment of the present application. The device 800 may be a chip system, or may be a device configured with a chip system for implementing the method described in the above method embodiment. In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices.

[0270] As shown in Figure 8, the device 800 may include a processor 810 and a communication interface 820. The communication interface 820 may be used to communicate with other devices via a transmission medium, thereby enabling the device 800 to communicate with other devices. The communication interface 820 may be, for example, a transceiver, an interface, a bus, a circuit, or a device capable of performing transceiver functions. The processor 810 may utilize the communication interface 820 to input and output data and to implement the resource update method described in the embodiments corresponding to Figures 5 or 6. Specifically, the device 800 may be used to implement the functions of the network device or terminal device of the above-described method embodiments.

[0271] Optionally, the device 800 further includes at least one memory 830 for storing program instructions and / or data. The memory 830 is coupled to the processor 810. Coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, and is used for information exchange between devices, units, or modules. The processor 810 may operate in conjunction with the memory 830. The processor 810 may execute program instructions stored in the memory 830. At least one of the at least one memory may be included in the processor.

[0272] The specific connection medium between the processor 810, communication interface 820, and memory 830 is not limited in the embodiments of the present application. In Figure 8, the processor 810, communication interface 820, and memory 830 are connected via a bus 840. Bus 840 is represented by a bold line in Figure 8, and the connection methods between other components are only for schematic illustration and are not limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one bold line is used in Figure 8, but this does not mean that there is only one bus or one type of bus.

[0273] Figure 9 is a schematic diagram of the structure of a network device provided in an embodiment of the present application, for example, a schematic diagram of the structure of a base station, which is an example of a network device. As shown in the figure, the base station 900 may include one or more DUs 910 and one or more centralized units (CUs) 920. The CU 920 can communicate with the next generation core network (NG core, NC). The DU 910 may include at least one antenna 911, at least one radio frequency unit 912, at least one processor 913, and at least one memory 914. The DU 910 is mainly used for transmitting and receiving radio frequency signals, converting radio frequency signals into baseband signals, and partial baseband processing. The CU 920 may include at least one processor 922 and at least one memory 921. The CU 920 and the DU 910 can communicate through an interface, wherein the control plane (CP) interface may be an Fs-C, such as F1-C, and the user plane (UP) interface may be an Fs-U, such as F1-U.

[0274] The CU 920 is primarily used for baseband processing and base station control. The DU 910 and CU 920 can be physically located together or separately, i.e., in a distributed base station. The CU 920 is the control center of the base station, also known as a processing unit, and is primarily used to perform baseband processing functions. For example, the CU 920 can be used to control the base station to execute the method performed by the network device in the embodiments shown in Figures 5 or 6.

[0275] In one example, the CU 920 may be composed of one or more boards, and the multiple boards may jointly support a wireless access network with a single access indication (such as a 5G network), or may respectively support wireless access networks with different access standards (such as an LTE network, a 5G network, or other networks). The memory 921 and the processor 922 may serve one or more boards. That is, a memory and a processor may be separately set on each board. It is also possible that multiple boards share the same memory and processor. In addition, necessary circuits may be provided on each board. The DU 910 may be composed of one or more boards, and the multiple boards may jointly support a wireless access network with a single access indication (such as a 5G network), or may respectively support wireless access networks with different access standards (such as an LTE network, a 5G network, or other networks). The memory 914 and the processor 913 may serve one or more boards. That is, a memory and a processor may be separately set on each board. It is also possible that multiple boards share the same memory and processor. In addition, necessary circuits may be provided on each board.

[0276] It should be understood that the base station 900 shown in Figure 9 is only one possible architecture of a network device and should not constitute any limitation to this application. The method provided in this application is applicable to network devices with other architectures. For example, network devices including a CU, a DU, and an active antenna processing unit (AAU). This application does not limit the specific architecture of the network device.

[0277] FIG10 is a schematic diagram of the structure of a terminal device 1000 provided in an embodiment of the present application. The terminal device 1000 can be used to implement the steps performed by the terminal device in the embodiment shown in FIG5 or FIG6. As shown in FIG10, the terminal device 1000 includes a processor 1001 and a transceiver 1002.

[0278] Optionally, the terminal device 1000 further includes a memory 1003. The processor 1001, the transceiver 1002, and the memory 1003 can communicate with each other through an internal connection path to transmit control and / or data signals. The memory 1003 is used to store a computer program, and the processor 1001 is used to call and run the computer program from the memory 1003 to control the transceiver 1002 to send and receive signals.

[0279] Optionally, the terminal device 1000 may further include an antenna 1004 for transmitting, via wireless signals, uplink data or uplink control signaling output by the transceiver 1002. Optionally, the terminal device 1000 may further include a Wi-Fi module 1011 for accessing a wireless network.

[0280] The processor 1001 and the memory 1003 may be combined into a processing device, and the processor 1001 is used to execute the program code stored in the memory 1003 to implement the above functions. In specific implementation, the memory 1003 may also be integrated into the processor 1001 or independent of the processor 1001.

[0281] The transceiver 1002 may correspond to the first transceiver unit 710, the second transceiver unit 720 in FIG. 7 , or the communication interface 820 in FIG. The transceiver 1002 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). The receiver is used to receive signals, and the transmitter is used to transmit signals.

[0282] Optionally, the terminal device 1000 may further include a power supply 1005 for providing power to various devices or circuits in the terminal device 1000 .

[0283] In addition, in order to make the functions of the terminal device more complete, the terminal device 1000 may also include one or more of an input unit 1006, a display unit 1007, an audio circuit 1008, a camera 1009 and a sensor 1010, and the audio circuit may also include a speaker 1008a, a microphone 1008b, etc.

[0284] It should be understood that the operations and / or functions of the various modules in the terminal device 1000 are respectively for implementing the corresponding processes in the above method embodiments. For details, please refer to the description in the above method embodiments. To avoid repetition, detailed description is appropriately omitted here.

[0285] The present application also provides a computer program product, which includes: a computer program (also referred to as code, or instructions). When the computer program is executed, the method described in the embodiment shown in Figure 5 or Figure 6 can be implemented.

[0286] The present application also provides a computer-readable storage medium storing a computer program (also referred to as code or instructions). When the computer program is executed, the method described in the embodiment shown in FIG. 5 or FIG. 6 can be implemented.

[0287] An embodiment of the present application provides a communication system, which includes the terminal device and the network device as described above.

[0288] It should be understood that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above-mentioned method embodiment can be completed by hardware integrated logic circuits in the processor or by software instructions. The above-mentioned processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above-mentioned method.

[0289] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0290] The terms "unit", "module", etc. used in this specification can be used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. The terms "unit" and "module" in the embodiments of this application have the same meaning and can be used interchangeably.

[0291] Those skilled in the art will appreciate that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented using 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. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application. In the several embodiments provided in this application, it should be understood that the disclosed devices, equipment, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed can be through some interface, indirect coupling or communication connection of devices or units, and can be electrical, mechanical, or other forms.

[0292] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0293] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0294] In the above embodiments, the functions of each functional unit can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (program) are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0295] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the technology or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0296] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A resource updating method, characterized in that: include: receiving a radio resource control (RRC) message from a network device, wherein the RRC message is used to configure at least one reference signal resource group, each of the at least one reference signal resource group including at least one reference signal resource; Receive a resource update message from the network device, where the resource update message is used to update information of reference signal resources of N reference signal resource groups in the at least one reference signal resource group, where N is a positive integer, and the resource update message is downlink control information DCI or medium access control MAC-control unit CE.

2. The method according to claim 1, characterized in that The resource update message is used to indicate at least one of the following: Information used to determine the value of N; The indexes of the N reference signal resource groups; beam information of reference signal resources in the N reference signal resource groups; Whether the resource update message indicates beam information of the reference signal resources in the N reference signal resource groups; Time slot information of the reference signal resources in the N reference signal resource groups; or, Period information of the reference signal resources in the N reference signal resource groups.

3. The method according to claim 2, characterized in that The beam information of the reference signal resources in the N reference signal resource groups is indicated in any one of the following ways: a first beam indication way or a second beam indication way; When the resource update message adopts the first beam indication mode, for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding beam information; When the resource update message adopts the second beam indication method, for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding beam information.

4. The method according to claim 3, characterized in that The resource update message is also used to indicate a beam indication mode, and the beam indication mode includes the first beam indication mode or the second beam indication mode.

5. The method according to any one of claims 2 to 4, characterized in that The time slot information of the reference signal resources in the N reference signal resource groups is indicated in any one of the following ways: a first time slot indication way or a second time slot indication way; When the resource update message adopts the first time slot indication mode, for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; When the resource update message adopts the second time slot indication manner, for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding time slot information.

6. The method according to claim 5, characterized in that The resource update message is further used to indicate a time slot indication mode, and the time slot indication mode includes the first time slot indication mode or the second time slot indication mode.

7. The method according to claim 5 or 6, characterized in that The time slot information is a relative time slot offset; When the resource update message adopts the first time slot indication mode, the relative time slot offset corresponding to each reference signal resource group in the N reference signal resource groups is used to update the time slot positions of all reference signal resources in the reference signal resource group; or, When the resource update message adopts the second time slot indication mode, the relative time slot offset corresponding to each reference signal resource is used to update the time slot position of each reference signal resource.

8. The method according to any one of claims 2 to 7, characterized in that The period information of the reference signal resources in the N reference signal resource groups is indicated in any one of the following ways: a first period indication way or a second period indication way; When the resource update message adopts the first period indication mode, for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding period information; When the resource update message adopts the second period indication manner, for all reference signal resources included in the N reference signal resource groups, the resource update message indicates a corresponding period information.

9. The method according to any one of claims 1 to 8, characterized in that Before receiving the resource update message from the network device, the method further includes: Sending terminal capability information to the network device, where the terminal capability information is used to indicate one or more of the following: whether it supports updating the information of the reference signal resources of the N reference signal resource groups through the resource update message; Whether it is supported that for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding Beam information; whether it is supported that for each reference signal resource included in the N reference signal resource groups, the resource update message indicates corresponding beam information; Whether it is supported that for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; whether it is supported that, for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; Supported values ​​of N; Whether to support variable value of N; or, Whether it is supported that the reference signal resources of the N reference signal resource groups adopt a common beam.

10. The method according to any one of claims 1 to 9, characterized in that The RRC message is also used to configure one or more of the following: whether to update the information of the reference signal resources of the N reference signal resource groups through the resource update message; whether, for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding beam information; whether, for each reference signal resource included in the N reference signal resource groups, the resource update message indicates corresponding beam information; whether, for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; whether, for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; Supported values ​​of N; Whether to support variable value of N; or, Whether the reference signal resources of the N reference signal resource groups adopt a common beam.

11. A resource updating method, characterized in that: include: Sending a radio resource control RRC message to a terminal device, where the RRC message is used to configure at least one reference signal resource group, each reference signal resource group in the at least one reference signal resource group including at least one reference signal resource; A resource update message is sent to the terminal device, where the resource update message is used to update the information of reference signal resources of N reference signal resource groups in the at least one reference signal resource group, where N is a positive integer, and the resource update message is downlink control information DCI or medium access control MAC-control unit CE.

12. The method according to claim 11, characterized in that The resource update message is used to indicate at least one of the following: Information used to determine the value of N; The indexes of the N reference signal resource groups; beam information of reference signal resources in the N reference signal resource groups; Whether the resource update message indicates beam information of the reference signal resources in the N reference signal resource groups; Time slot information of the reference signal resources in the N reference signal resource groups; or, Period information of the reference signal resources in the N reference signal resource groups.

13. The method according to claim 12, characterized in that The beam information of the reference signal resources in the N reference signal resource groups is indicated in any one of the following ways: a first beam indication way or a second beam indication way; When the resource update message adopts the first beam indication mode, for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding beam information; When the resource update message adopts the second beam indication method, for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding beam information.

14. The method according to claim 13, characterized in that The resource update message is also used to indicate a beam indication mode, and the beam indication mode includes the first beam indication mode or the second beam indication mode.

15. The method according to any one of claims 12 to 14, characterized in that The time slot information of the reference signal resources in the N reference signal resource groups is indicated in any one of the following ways: a first time slot indication way or a second time slot indication way; When the resource update message adopts the first time slot indication mode, for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; When the resource update message adopts the second time slot indication manner, for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding time slot information.

16. The method according to claim 15, characterized in that The resource update message is further used to indicate a time slot indication mode, and the time slot indication mode includes the first time slot indication mode or the second time slot indication mode.

17. The method according to claim 15 or 16, characterized in that The time slot information is a relative time slot offset; When the resource update message adopts the first time slot indication mode, the relative time slot offset corresponding to each reference signal resource group in the N reference signal resource groups is used to update the time slot positions of all reference signal resources in the reference signal resource group; or, When the resource update message adopts the second time slot indication mode, the relative time slot offset corresponding to each reference signal resource is used to update the time slot position of each reference signal resource.

18. The method according to any one of claims 12 to 17, characterized in that The period information of the reference signal resources in the N reference signal resource groups is indicated in any one of the following ways: a first period indication way or a second period indication way; When the resource update message adopts the first period indication mode, for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding period information; When the resource update message adopts the second period indication manner, for all reference signal resources included in the N reference signal resource groups, the resource update message indicates a corresponding period information.

19. The method according to any one of claims 11 to 18, characterized in that Before sending the RRC message to the terminal device, the method further includes: Receive terminal capability information, where the terminal capability information is used to indicate one or more of the following: whether it supports updating the information of the reference signal resources of the N reference signal resource groups through the resource update message; whether it is supported that for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding beam information; whether it is supported that for each reference signal resource included in the N reference signal resource groups, the resource update message indicates corresponding beam information; Whether it is supported that for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; whether it is supported that, for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; Supported values ​​of N; Whether to support variable value of N; or, Whether it is supported that the reference signal resources of the N reference signal resource groups adopt a common beam.

20. The method according to any one of claims 11 to 19, characterized in that The RRC message is also used to configure one or more of the following: whether to update the information of the reference signal resources of the N reference signal resource groups through the resource update message; whether, for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding beam information; whether, for each reference signal resource included in the N reference signal resource groups, the resource update message indicates corresponding beam information; whether, for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; whether, for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; Supported values ​​of N; Whether to support variable value of N; or, Whether the reference signal resources of the N reference signal resource groups adopt a common beam.

21. A communication device, characterized in that: The method comprises a unit for implementing the method according to any one of claims 1 to 10, or comprises a unit for implementing the method according to any one of claims 11 to 20.

22. A communication device, characterized in that: comprising a processor and a memory, wherein: The memory is used to store computer programs; The processor is configured to call the computer program so that the apparatus implements the method according to any one of claims 1 to 10, or implements the method according to any one of claims 11 to 20.

23. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or instruction. When the computer program or instruction is executed by a computer, the method according to any one of claims 1 to 10 is implemented, or the method according to any one of claims 11 to 20 is implemented.

24. A computer program product, characterized in that The computer program product comprises instructions, and when the instructions are executed by a computer, the method according to any one of claims 1 to 10 is implemented, or the method according to any one of claims 11 to 20 is implemented.

Images