Resource updating method and related device

Abstract

Provided are a resource updating method and a related device, the method comprising: receiving an RRC message from a network device, the RRC message being used for configuring at least one reference signal resource group, each of the at least one reference signal resource group comprising at least one reference signal resource; and receiving a resource update message from the network device, the resource update message being used for updating information of reference signal resources of N reference signal resource groups in the at least one reference signal resource group, N being a positive integer, and the resource update message being DCI or MAC-CE. According to the embodiment of the invention, the information of the reference signal resource is updated through the DCI or the MAC-CE, compared with an RRC message, the time delay is relatively low, so that the network equipment can indicate the updated information of the reference signal resource to the terminal equipment in time, the terminal equipment can conveniently adjust a receiving beam in time, and the transmission performance is improved.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a resource updating method and related devices. Background Art

[0002] A specific beam may be used for communication between the network device and the terminal device, and the specific beam to be used is determined by beam measurement. For example, the network device may send reference signals through different beams, each beam corresponding to a reference signal, and the terminal device determines a beam with better quality based on the measurement of the received reference signal.

[0003] In order to reduce the complexity and overhead of the measurement, two-level beam management can be used. 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 SSB. 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 through these narrower beams respectively. The terminal device determines and reports the narrow beam with better quality based on the measurement of the above CSI-RS.

[0004] When a group of narrow beams to be measured by the terminal device changes (such as the position of the terminal device changes, resulting in a change in the narrow beam), the network device can update the CSI-RS resource information through a radio resource control (RRC) message, such as the beam corresponding to the CSI-RS resource, frequency domain information, time domain information, etc. However, since the RRC message is a high-level signaling, the transmission delay is large, and the network device cannot promptly indicate the updated CSI-RS resource information to the terminal device, resulting in the terminal device being unable to promptly select a suitable beam for reception, thereby causing a loss in transmission performance. Summary of the invention

[0005] The present application provides a resource updating method and related devices, in order to reduce latency and thereby improve transmission performance.

[0006] On 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 implement all or part of the functions of the terminal device. The present application does not limit this.

[0007] 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 (downlink control information, DCI) or a medium access control (medium access control, MAC)-control element (control element, CE).

[0008] In the above technical solution, the information of 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 in a more timely manner, thereby facilitating the terminal device to adjust the receiving beam in time, thereby improving the transmission performance.

[0009] 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 also includes: sending terminal capability information to the network device, the terminal capability information being used to indicate one or more of the following: whether to support updating the information of the reference signal resources of the above-mentioned N reference signal resource groups through a resource update message; whether to support, for each reference signal resource group in the above-mentioned N reference signal resource groups, the resource update message indicating a corresponding beam information; whether to support, for each reference signal resource included in the above-mentioned N reference signal resource groups, the resource update message indicating a corresponding beam information; whether to support, for each reference signal resource group in the above-mentioned N reference signal resource groups, the resource update message indicating a corresponding time slot information; whether to support, for each reference signal resource included in the above-mentioned N reference signal resource groups, the resource update message indicating a corresponding time slot information; supported values ​​of N; whether to support the value of N being variable; or, whether to support the reference signal resources of the N reference signal resource groups to use a common beam.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] In the above technical solution, the information of 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 in a more timely manner, thereby facilitating the terminal device to adjust the receiving beam in time, thereby improving the transmission performance.

[0014] In combination with the second aspect, in some possible implementations of the second aspect, before sending an RRC message to a 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 to support updating the information of reference signal resources of N reference signal resource groups through a resource update message; whether to support, for each reference signal resource group in the above-mentioned N reference signal resource groups, the resource update message indicating a corresponding beam information; whether to support, for each reference signal resource included in the above-mentioned N reference signal resource groups, the resource update message indicating a corresponding beam information; whether to support, for each reference signal resource group in the above-mentioned N reference signal resource groups, the resource update message indicating a corresponding time slot information; whether to support, for each reference signal resource included in the above-mentioned N reference signal resource groups, the resource update message indicating a corresponding time slot information; supported values ​​of N; whether to support the value of N being variable; or, whether to support the reference signal resources of N reference signal resource groups to use a common beam.

[0015] 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.

[0016] 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.

[0017] The network device can indicate the beam information of the reference signal resources of the above-mentioned N reference signal resource groups by 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.

[0018] Among them, for each of the N reference signal resource groups, a corresponding beam information is indicated, which can be understood as, when a reference signal is transmitted 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. For each reference signal resource included in the N reference signal resource groups, a corresponding beam information is indicated, which can be understood as, when a reference signal is transmitted based on each reference signal resource in the N reference signal resource groups, the beam corresponding to the reference signal resource can be used.

[0019] 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, and the beam indication mode includes a first beam indication mode or a second beam indication mode.

[0020] 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 network device and the terminal device to align the beam indication methods, and further facilitate the terminal device to correctly read the beam information of the reference signal resources.

[0021] 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.

[0022] The network device may indicate the time slot information of the reference signal resources of the N reference signal resource groups by using any one of the first time slot indication method or the second time slot indication method, which is more flexible than a single time slot indication method.

[0023] Wherein, for each of the N reference signal resource groups, a corresponding time slot information is indicated, which can be understood as, when a reference signal is transmitted based on all reference signal resources in a certain 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, a corresponding time slot information is indicated, which can be understood as, 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.

[0024] In combination with the first aspect and the second aspect, in some possible implementations, the resource update message is also used to indicate a time slot indication mode, and the time slot indication mode includes a first time slot indication mode or a second time slot indication mode.

[0025] 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 network device and the terminal device to align the time slot indication methods, thereby facilitating the terminal device to correctly read the time slot information of the reference signal resources.

[0026] 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.

[0027] 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.

[0028] Wherein, for each of the N reference signal resource groups, a corresponding period information is indicated, which can be understood as that the periods of all reference signal resources in a certain reference signal resource group are the periods corresponding to the reference signal resource group indicated. For all reference signal resources included in the N reference signal resource groups, a corresponding period information is indicated, which can be understood as that all reference signal resources in the N reference signal resource groups share one period.

[0029] 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.

[0030] In a third aspect, the present application provides a communication 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 by software and / or hardware.

[0031] In a fourth aspect, the present application provides a communication device, the device comprising a processor. The processor is coupled to a memory and can be used to execute a computer program in the memory to implement the method in the first aspect and any possible implementation of the first aspect, or to implement the method in the second aspect and any possible implementation of the second aspect.

[0032] Optionally, the device further comprises a communication interface, and the processor is coupled to the communication interface. The communication interface is used to receive a signal from other communication devices outside the device and transmit it to the processor, or send a signal from the processor to other communication devices outside the device. Exemplarily, the communication interface can be a transceiver, circuit, bus, module or other type of communication interface.

[0033] Optionally, the device further comprises a memory, and the processor is coupled to the memory. The memory is used to store program instructions and data.

[0034] In a fifth aspect, the present application provides a computer-readable storage medium, which stores a computer program or instruction. When the computer program or instruction is 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.

[0035] In a sixth aspect, the present application provides a computer program product comprising instructions, which, when executed, implement the method in the first aspect and any possible implementation of the first aspect, or implement the method in the second aspect and any possible implementation of the second aspect.

[0036] 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.

[0037] In one possible design, the chip system also includes a memory, which is used to store program instructions and data, and the memory is located inside or outside the processor.

[0038] The chip system may be composed of the chip, or may include the chip and other discrete devices.

[0039] 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 manner of the first aspect, and a network device for implementing the method described in the second aspect and any possible implementation manner of the second aspect.

[0040] 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

[0041] Figure 1 It is a schematic diagram of the beam management process provided by an embodiment of the present application;

[0042] Figure 2 It is a schematic diagram of an existing resource update process provided by an embodiment of the present application;

[0043] Figure 3 is a schematic diagram of the system architecture of the communication system provided in an embodiment of the present application;

[0044] Figure 4 is a schematic diagram of a communication device provided in an embodiment of the present application performing communication;

[0045] Figure 5 is a schematic flow chart of a resource updating method provided in an embodiment of the present application;

[0046] Figure 6 It is a detailed flowchart of the resource updating method provided in the embodiment of the present application;

[0047] Figure 7 is a schematic block diagram of a communication device provided in an embodiment of the present application;

[0048] Figure 8 is another schematic block diagram of a communication device provided in an embodiment of the present application;

[0049] Fig. 9 is a schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0050] Fig.10 It is a schematic diagram of the structure of the terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0052] The technical solution 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), sidelink communication system, universal mobile telecommunication system (UMTS), worldwide 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 can include non-standalone (NSA) and / or standalone (SA).

[0053] The technical solution provided in this application can also be applied to future communication systems, such as the sixth generation (6th Generation, 6G) mobile communication system, etc. This application does not limit this.

[0054] The following first introduces the network elements involved in the embodiments of the present application: network equipment and terminal equipment.

[0055] In the embodiment of the present application, the network device may be any device with wireless transceiver function. The network equipment includes, but is not limited to, evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or homeNode B, HNB), baseband unit (BBU), access point (AP) in wireless fidelity (Wi-Fi) system, wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc. It can also be a gNB or transmission point (TRP or TP) in a 5G (such as NR) system, or one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system, or it can also be a network node constituting a gNB or 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.

[0056] 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.

[0057] 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 can be: mobile phones, tablet computers, computers with wireless transceiver functions (such as laptops, PDAs, etc.), mobile Internet devices (MID), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, drones, wireless terminals in remote medical, 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 (public land mobile communication networks) Mobile network, PLMN) terminal equipment, etc.

[0058] Among them, wearable devices can also be called wearable smart devices, which are a general term for the intelligent design and development of wearable devices for daily wear using wearable technology, 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 clothes or accessories. Wearable devices are not only hardware devices, but also realize powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, 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.

[0059] In addition, the terminal device can also be a terminal device in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection. IoT technology can achieve massive connections, deep coverage, and terminal power saving through narrowband (NB) technology, for example.

[0060] 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 equipment), receiving control information and downlink data from network devices, and sending electromagnetic waves to transmit uplink data to network devices.

[0061] It should be understood that the present application does not limit the specific forms of the network device and the terminal device.

[0062] 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.

[0063] 1. Beam: can be understood as spatial domain filter, spatial filter, spatial domain parameter, spatial 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.

[0064] A beam used to transmit a signal may be referred to as a transmission beam (Tx beam), and may also 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. A downlink transmission beam may be indicated by a downlink TCI-state.

[0065] A beam used to receive a signal may be called a reception beam (Rx beam), and may also be called 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, etc.

[0066] In addition, the beam may be a wide beam, a narrow beam, or other types of beams. The technology for forming the beam may be a beamforming technology or other technologies. The beamforming technology may specifically be a digital beamforming technology, an analog beamforming technology, or a hybrid digital / analog beamforming technology.

[0067] Optionally, multiple beams with the same or similar communication characteristics are regarded as one beam. One beam may include one or more antenna ports for transmitting data channels, control channels, and sounding signals. One or more antenna ports forming a beam may also be regarded as an antenna port set.

[0068] 2. Reference signal and reference signal resources: Reference signals can be used for channel measurement, channel estimation or beam measurement, etc. Reference signal resources can be used to configure the transmission properties of reference signals, such as time-frequency resource location, port mapping relationship, power factor and scrambling code, etc. The transmitting device can send reference signals based on the reference signal resources, and the receiving device can receive reference signals based on the reference signal resources.

[0069] 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), 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.

[0070] Reference signal resources are configured through RRC messages. In terms of configuration structure, a resource is an information element (IE), including relevant parameters of the 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 can be understood that the index of the 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.

[0071] In addition, in the present application, the parameters used to measure the beam quality include received signal strength indicator (RSSI), reference signal received signal power (RSRP), etc., but are not limited thereto. For example, the beam quality can also be measured by reference signal receiving quality (RSRQ), signal-noise ratio (SNR), signal to interference plus noise ratio (SINR, referred to as signal to interference plus noise ratio), precoding matrix indicator (PMI), transmitted precoding matrix indicator (TPMI), rank indicator (RI), transmitted rank indicator (TRI), layer indicator (LI), timing advance (TA) and other parameters.

[0072] 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 the present application. The present application does not exclude the possibility of defining other reference signals in future protocols to achieve the same or similar functions.

[0073] 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 transmission beam it uses, so that the terminal device knows what receiving beam to use for reception; in uplink transmission, the network device also needs to indicate to the terminal device what uplink transmission beam the terminal device needs to use, because the network device knows which beam of the terminal device is the best. Both uplink beams and downlink beams can be indicated by 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), which 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 an index 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, or two downlink TCI states, or two uplink TCI states.

[0074] 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 what 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" above, one is of type D, and the other is of type A, type B, or type C. The terminal device can determine which receiving beam to use to receive the corresponding downlink transmission through the type D "QCL-Info".

[0075] The specific steps are as follows:

[0076] 1) The network device indicates the downlink TCI status of a downlink transmission to the terminal device through DCI (indicated by the TCI field).

[0077] 2) The terminal device determines the reference signal resources in the "QCL-Info" of type D in the TCI state.

[0078] 3) Determine the receiving beam corresponding to the downlink transmission as the receiving beam of the reference signal resource. It should be understood that through the beam management process, the terminal device can determine which receiving beam is better to receive the reference signal resource, and use the receiving beam as the receiving beam of the reference signal resource.

[0079] 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:

[0080] 1) The network device indicates the uplink TCI status of a certain downlink transmission to the terminal device through DCI (indicated by the TCI field).

[0081] 2) The terminal device determines the reference signal resources in the TCI state.

[0082] 3) Determine the transmission beam corresponding to the uplink transmission as the transmission beam of the reference signal resource.

[0083] 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.

[0084] 4. Beam management

[0085] Beam management is divided into downlink beam management and uplink beam management.

[0086] 1) Downlink beam management

[0087] Downlink beam management mainly includes the following steps:

[0088] S1. The network device sends measurement configuration information to the terminal device. The network device sends measurement configuration information to the terminal device through an RRC message, which mainly includes 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 through a three-level structure (resource configuration (resourceConfig)-resource set (resource set)-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 / resource includes its own index. In addition, some other parameters are also included, such as the cycle of the resource, the signal type corresponding to the resource, etc. Reporting configuration information refers to information related to the measurement result reporting, which is configured in the protocol through reporting configuration (ReportConfig). The network device can configure one or more reporting configurations for the terminal device, each reporting configuration includes reporting indicators, reporting time and cycle, reporting format and other reporting-related information. In addition, the reporting configuration also includes the index of the resource configuration, which is used to indicate what measurement configuration the reported result was measured by. For the specific format of resource configuration and reporting configuration, please refer to the known protocol and will not be described in detail here.

[0089] 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.

[0090] S3. The terminal device measures the downlink reference signal according to the measurement configuration information.

[0091] 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 is 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 (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 field and the SSBRI field. RSRP is the quality of the resource. RSRP reporting adopts the differential reporting criterion, that is, the RSRP of the best resource (RSRP field in Table 1) is reported using 7-bit quantization, while other RSRP (differentialRSRP in Table 1) fields are reported using 4-bit quantization.

[0092] Table 1

[0093]

[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 set) for uplink beam management for the terminal device, and 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, and 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 according to the configuration of each SRS resource using the uplink transmission beam associated with the 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] It can be seen from the beam management process that a specific beam can be used for communication between the network device and the terminal device, and the specific beam to be used is determined by beam measurement. For example, the network device can send reference signals through each beam, each beam corresponds to a reference signal, and the terminal device determines a beam with better quality based on the measurement of the above reference signals.

[0101] To reduce the complexity and cost of measurement, two-level beam management can be used. Figure 1 The two-level beam management is explained in detail.

[0102] Figure 1 It is a schematic diagram of the beam management process provided in an embodiment of the present application.

[0103] like Figure 1 As shown, 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, based on the above wide beam, the network device configures multiple CSI-RS resources for the terminal device, and each CSI-RS resource corresponds to a narrower beam, that is, the above 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, and the network device sends the corresponding CSI-RS through these narrower beams respectively, and the terminal device determines and reports the narrow beam with better quality based on the measurement of the above CSI-RS.

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

[0105] Figure 2It is a schematic diagram of the existing resource update process provided in the embodiment of the present application.

[0106] like Figure 2 As shown, the network device sends CSI-RS to the terminal device through the CSI-RS resources configured by the RRC message, the terminal device measures it, and reports the measurement results to the network device. When a group of narrow beams to be measured by the terminal device changes, the network device updates the CSI-RS resources through the RRC message, and further, the network device sends CSI-RS to the terminal device through the updated CSI-RS resources, the terminal device measures it, 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 in 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 the transmission performance.

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

[0110] First, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first" and "second" are used to distinguish the same items or similar items with basically the same functions and effects. For example, the first beam indication mode and the second beam indication mode are only used to distinguish different beam indication modes, and their order is not limited. Those skilled in the art can understand that the words "first" and "second" do not limit the quantity and execution order, and the words "first" and "second" do not necessarily limit them to be different.

[0111] Second, in the embodiments shown in this document, various terms and English abbreviations, such as channel state information reference signal (CSI-RS), sounding reference signal (SRS), synchronization signal block (SSB), transmission configuration indication (TCI), etc., are illustrative examples given for the convenience of description and should not constitute any limitation to this application. This application does not exclude the possibility of defining other terms that can achieve the same or similar functions in existing or future protocols.

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

[0113] Fourth, "at least one" means one or more, and "plurality" 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 corresponding relationships shown in each table in the present application can be configured or predefined. The values ​​of the information in each table are only examples and can be configured as other values, which are not limited by the present application. When configuring the corresponding relationship between the information and each parameter, it is not necessarily required to configure all the corresponding relationships illustrated in each table. For example, in the table in the present application, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names that can be understood by the communication device, and the values ​​or representations of the parameters can also be other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures can 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" may include direct indication and indirect indication, and may 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. The information to be indicated may also be indirectly indicated by indicating other information, wherein the other information is associated with the information to be indicated; it may also 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 arrangement order of each information agreed in advance (such as predefined by the protocol) can be used to implement 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 can be understood 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 embodiment of the present application, the system architecture of the resource update method provided in the embodiment of the present application is described below. It is understandable that the system architecture described in the embodiment of the present application is to more clearly illustrate the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided in the embodiment of the present application.

[0118] Figure 3 It is a schematic diagram of the system architecture of the communication system provided in an embodiment of the present application.

[0119] like Figure 3 As shown in a), 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 one network device can transmit data or control signaling to one or more terminal devices.

[0120] like Figure 3 As shown in b), 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] Figure 3 a) and Figure 3In the communication system shown in 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 this embodiment of the present application.

[0123] Figure 4 It is a schematic diagram of communication performed by a communication device provided in an embodiment of the present application.

[0124] like Figure 4 As shown, the terminal device 10 logically includes multiple parts, for example, a processor 101, a memory 102, and a transceiver 103, and the transceiver 103 includes a transmitter 1031, a receiver 1032, and an antenna 1033. The network device 20 logically includes multiple parts, for example, a processor 201, a memory 202, and a transceiver 203, and the transceiver 203 includes a transmitter 2031, a receiver 2032, and an antenna 2033. The receiver 1032 can be used to receive information sent by the network device 20 through the antenna 1033, and the transmitter 1031 can be used to send information to the network device 20 through the antenna 1033. The transmitter 2031 can be used to send information to the terminal device 10 through the antenna 2033, and the receiver 2032 can be used to receive information sent by the terminal device 10 through the antenna 2033.

[0125] The following will be combined Figure 5 The resource updating method provided by this application is described in detail.

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

[0127] 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 may be a reference signal resource set (resource set) in the protocol, or may be 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 by taking 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 the present 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 the present 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, and accordingly, the terminal device receives the RRC message from the network device.

[0132] Step 520: The network device sends a resource update message to the terminal device, where the resource update message is used to update the information of the reference signal resources 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, and 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 design of the resource update message is described in detail below using MAC-CE as an example. However, this should not constitute any limitation on the embodiments of the present application, and the following design can also be applied to DCI, that is, the following design can also be a signaling design of DCI, and it is only necessary to replace 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 used to determine 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 the purpose of easy distinction and do not limit the specific meanings of the various fields. In addition, the division of the various fields is only an example and should 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 described 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 for determining the value of N can be represented by a field in MAC-CE, such as a resource group quantity field, and the resource group quantity field is used to indicate the number of reference signal resource groups updated in the resource update message. It can be understood that when a reference signal resource group includes a reference signal resource, N can also be regarded as the number of reference signal resources updated in the above resource update message, and the information for determining the value of N can also be represented by the resource quantity field, that is, 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 is a detailed description taking the reference signal resource group as an example.

[0144] When the value of N is represented by the resource group quantity 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 the 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. The 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. The 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. They are not listed one by one here, and the present application does not specifically limit the bytes and specific bits occupied by the above fields.

[0146] Another possible design is that the field may occupy the first bit, the second bit, the last bit, the first two bits, or the last two bits in the byte used to carry the first reference signal resource group index. The field is used to indicate whether there are other reference signal resource groups besides the first reference signal resource group.

[0147] Another possible design is that the 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. The field is used to indicate whether the next byte of the byte where the field is located is also a byte carrying 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 non-existence 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 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 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 simultaneously 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 an index of a resource group, and the value of N may be determined according to the number of indexes of the resource group. In addition, when a reference signal resource group includes a reference signal resource, the design of the resource group quantity field is also applicable 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, and the MAC-CE includes N groups of bytes, each group of bytes includes one or more bytes, and each group of bytes corresponds to a reference signal resource group, such as the first reference signal resource group corresponds to a group of bytes, and the second reference signal resource group corresponds to another group of bytes, wherein each group of bytes corresponds to a reference signal resource group, and it can be understood that the group of bytes is used to record the information of the reference signal resource group, such as the reference signal resource group index, the beam information of the reference signal resource group, the time slot information of the reference signal resource group, etc. The terminal device can determine how many groups of the above bytes are included in the resource update message according to the value of N, or determine which of the multiple groups of bytes in the resource update message format are actually present and which are not present.

[0153] Exemplarily, this field indicates that there is information about N reference signal resource groups in MAC-CE, then the first N groups of bytes exist, and the other bytes do not exist. In particular, 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 there is only one group of bytes in the resource update message, for example, 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 there are two groups of bytes in the resource update message, that is, both the first group of bytes and the second group of bytes exist.

[0154] Table 2

[0155] … The first reference signal resource group The second reference signal resource group …

[0156] Optionally, the number of the above-mentioned reference signal resource groups may be replaced by the number of reference signal resources, that is, there is a field in the resource update message for indicating the number of reference signal resources updated by the resource update message. The resource update message may include one of the above-mentioned fields for indicating the number of reference signal resources updated by the resource update message. The resource update message may include multiple of the above-mentioned fields, each field corresponding to a reference signal resource group, for indicating how many reference signal resources in the reference signal resource group the resource update message is to update.

[0157] 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.

[0158] 2. Indexes of N reference signal resource groups.

[0159] 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 (if the resource configuration includes 2 resource sets, their local indexes are 0 and 1 respectively), a resource set index + a local index of a subset of a resource set (if the resource set includes 2 subsets, their local indexes are 0 and 1 respectively).

[0160] The index of the above-mentioned reference resource group may also be replaced by the index of the reference signal resource. For example, a reference signal resource group may 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 may 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 may 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.

[0161] Optionally, the index of the reference signal resource group may be replaced with the index of the reference signal resource, that is, there is a field in the resource update message for indicating the index of the reference signal resource updated by the resource update message. The resource update message may include a group of the above fields, for indicating the index of the reference signal resource updated by the resource update message. The resource update message may include multiple groups of the above fields, each group of fields corresponding to a reference signal resource group, for indicating which reference signal resources in the reference signal resource group are to be updated by the resource update message.

[0162] 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.

[0163] 3. Beam information of reference signal resources in N reference signal resource groups.

[0164] 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., and 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 a TCI state or an index of a QCL indication, etc.

[0165] 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.

[0166] In other words, in the first beam indication method, each of the above-mentioned N reference signal resource groups corresponds to one beam information; in the second beam indication method, each reference signal resource included in the above-mentioned N reference signal resource groups corresponds to one beam information.

[0167] Among them, for each of the above-mentioned N reference signal resource groups, a corresponding beam information is indicated, which can be understood as, when transmitting a reference signal 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, which can be understood as, when transmitting a reference signal 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).

[0168] It can be understood that the above-mentioned beam indication method is only an example and should not constitute any limitation on 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 use 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, and each beam information corresponds to part of the reference signal resources in the reference signal resource group. In other words, when a reference signal is transmitted based on part of the reference signal resources in a reference signal resource group, the reference signal can be transmitted using the beam corresponding to the indicated part of the reference signal resources.

[0169] It can be 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 MAC-CE as an example, the format of MAC-CE is shown in Table 3. The following is a detailed description of the influence of the beam indication method on the number of bytes of beam information used to indicate reference signal resources in conjunction with Table 3.

[0170] As shown in Table 3, each row represents a byte, and each reference signal resource group corresponds to multiple bytes, wherein 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, occupying one byte, the second beam information is the beam information corresponding to the second reference signal resource, occupying another byte, the third beam information is the beam information corresponding to the third reference signal resource, occupying another byte, and so on. When the first beam indication method is adopted, the first byte of the multiple bytes exists, and the other bytes do not exist. When the second beam indication method is adopted, each byte of the multiple bytes exists. Alternatively, the MAC-CE includes multiple bytes, corresponding to the multiple reference signal resources indicated by the MAC-CE, each byte corresponds to a reference signal resource, and when the third beam indication method is adopted, the first byte of the multiple bytes exists, and the other bytes do not exist. When the second beam indication method is adopted, each byte of the multiple bytes exists.

[0171] Table 3

[0172]

[0173]

[0174] Optionally, the resource update message is also used to indicate a beam indication mode, and the beam indication mode includes a first beam indication mode or a second beam indication mode.

[0175] A variety of beam indication modes have been mentioned above, and the specific beam indication mode used can be indicated by the 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, and this application does not limit this. The beam indication mode information can be, for example, an index of the beam indication mode, and different beam indication modes correspond to different indexes, and the beam indication mode used is indicated by the index.

[0176] The beam indication mode information may be indicated by a beam indication mode field. For example, a resource update message may include a beam indication mode field, which is used to indicate which beam indication mode is used for the reference signal resource in the resource update message. For another example, a resource update message may include multiple beam indication mode fields, each field corresponding to a reference signal resource group, which is used to indicate which beam indication mode is used for the reference signal resource group.

[0177] Optionally, the length of the field may be 1 bit or multiple bits (such as 2 bits). Several possible designs of the bytes and bits occupied by the field are described below.

[0178] One possible design is that the 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. The 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. The 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.

[0179] 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.

[0180] Another possible design is that the field may also occupy the first byte of multiple bytes corresponding to a reference signal resource group for indicating beam information. For example, if the 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 be described in detail in conjunction with Table 4 how this field indicates whether, in addition to the first byte, there are other bytes for indicating the beam information of the reference signal resources in the reference signal resource group.

[0181] 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 (recorded 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 for indicating 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 for indicating beam information corresponding to a reference signal resource group, and is used to indicate whether the next byte is also used to indicate the beam information of the reference signal resources.

[0182] Table 4

[0183]

[0184] 4. Whether the beam information of the reference signal resource is indicated in the resource update message.

[0185] Whether the above 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.

[0186] 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 of which corresponds to a reference signal resource group, to indicate whether there is beam information corresponding to the reference signal resource in the reference signal resource group. Alternatively, the resource update message may include multiple such fields, each of which corresponds to a reference signal resource, to indicate whether there is beam information corresponding to the reference signal resource.

[0187] 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.

[0188] One possible design is that the 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. The 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. The 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.

[0189] 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.

[0190] This field can also be combined with the function of the beam indication mode field, that is, a field is used to indicate the number of beams X corresponding to the resource update message or the number of beams X corresponding to each reference signal resource group in the resource update message. X can be equal to 0, indicating that there is no beam information. X can also be equal to 1, indicating that there is only one beam information. When X is equal to 1, the above-mentioned first beam indication mode or third beam indication mode can be used. X can also be a number greater than 1, indicating that there are multiple beam information, such as each reference signal resource corresponds to one beam information, in which case the above-mentioned second beam indication mode can be used.

[0191] Optionally, when the second condition is met, the beam existence indication field exists; when the second condition is not met, the beam existence indication field does not exist. The non-existence 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).

[0192] 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 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 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 at the same time through a resource update message (such as the network device configures this function through an RRC message). C message configured 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).

[0193] 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, 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 time 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 time 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.

[0194] 5. Time slot information of reference signal resources in N reference signal resource groups.

[0195] The time slot information of the reference signal resources in the above-mentioned N reference signal resource groups is used to indicate the time slot of the reference signal resource. The above-mentioned time slot information can be indicated by the time slot information indication field. There may be one such field in the resource update message, which is used to determine the time slot information of all reference signal resources. There may also be multiple such fields, each corresponding to a reference signal resource group, which is used to determine the time slot information of the reference signal resources in the reference signal resource group. There may also be multiple such fields, each corresponding to a reference signal resource, which is used to determine the time slot information corresponding to the reference signal resource.

[0196] The length of this field can be 8 bits. The 8 bits occupy a whole byte. The value range of this field can be an integer from 0 to 255, or an integer from -127 to 128, or an integer from -128 to 127.

[0197] The length of this field may also be 10 bits. The 10 bits occupy a whole byte and another 2 bits. The other 2 bits may be 2 bits in the byte where a reference signal resource group index is located (for example, 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 the field is located) (for example, the reference signal resource group index occupies 6 bits, and the other 2 bits are used for the time slot information of the reference signal resource), thereby saving bit overhead.

[0198] 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 where the index of the reference signal resource group is located. The value range of this field can be an integer from 0 to 1023, or 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, or an integer from -319 to 320, or an integer from -320 to 319.

[0199] 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.

[0200] 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.

[0201] Among them, for each of the above-mentioned N reference signal resource groups, a corresponding time slot information is indicated, which can be understood as, when a reference signal is transmitted based on all reference signal resources in a certain 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 above-mentioned N reference signal resource groups, a corresponding time slot information is indicated, which can be understood as, 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. In other words, the resources used to transmit reference signals are defined from the perspective of the time domain.

[0202] It can be understood that the above-mentioned time slot indication method is only an example and should not constitute any limitation to 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 of 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.

[0203] Optionally, the specific time slot indication method may affect the number of bytes used to indicate the time slot information in the resource update message. For example, taking the resource update message as MAC-CE as an example, the format of MAC-CE is shown in Table 5. The following will describe in detail the influence of the time slot indication method on the number of bytes used to indicate the time slot information in the resource update message in conjunction with Table 5.

[0204] As shown in Table 5, each row represents a byte, and each reference signal resource group corresponds to multiple bytes, wherein 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, and the byte 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, and the second byte 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, and the third byte 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 adopted, the first byte of the multiple bytes exists, and the other bytes do not exist. When the second time slot indication method is adopted, each byte of the multiple bytes exists. Alternatively, the MAC-CE includes multiple bytes, corresponding to the multiple reference signal resources updated by the MAC-CE, and each byte corresponds to a reference signal resource. When the third time slot indication method is adopted, the first byte of the multiple bytes exists, and the other bytes do not exist. When the second time slot indication mode is adopted, each byte of the multiple bytes exists.

[0205] Table 5

[0206] … First time slot information Second time slot information Third time slot information …

[0207] Optionally, the terminal device determines the time slot corresponding to each reference signal resource based on the time slot information.

[0208] One possible design is that the time slot information may 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.

[0209] The relative time slot offset indicates a forward and backward shift based on the current time slot position. According to the relative time slot offset, the terminal device shifts the time slots of each reference signal resource forward and backward based on the current time slot position to obtain the time slots corresponding to each reference signal resource.

[0210] 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.

[0211] In another example, if the time slot information is indicated using the second time slot indication method, that is, a relative time slot offset is indicated for each reference signal resource, 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.

[0212] 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 according to the relative time slot offset.

[0213] 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 according to the specific time slot.

[0214] In one example, if the time slot information is indicated in the first time slot indication mode, 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, 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.

[0215] In another example, if the time slot information is indicated using the second time slot indication method, that is, one time slot is indicated for each reference signal resource, then each reference signal resource directly uses the indicated time slot.

[0216] As another example, if the time slot information is indicated using the 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 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, 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.

[0217] A variety of time slot indication modes have been mentioned above. Which time slot indication mode is specifically adopted can be indicated by the time slot indication mode information. In other words, the time slot indication mode information is used to indicate the time slot indication mode adopted 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 can indicate one of the third time slot indication mode and the second time slot indication mode, and this application does not limit this. The time slot indication mode information can be, for example, an index of the time slot indication mode, and different time slot indication modes correspond to different indexes, and the time slot indication mode adopted is indicated by the index.

[0218] The time slot indication mode information may be indicated by a time slot indication mode field. For example, a resource update message may include a time slot indication mode field, which is used to indicate which time slot indication mode is used for the reference signal resource in the resource update message. For another example, a resource update message may include multiple time slot indication mode fields, each field corresponding to a reference signal resource group, which is used to indicate which time slot indication mode is used for the reference signal resource group.

[0219] 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.

[0220] One possible design is that the 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. The 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. The 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.

[0221] 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.

[0222] Another possible design is that the field may also occupy the first bit of multiple bytes corresponding to a reference signal resource group for indicating time slot information. For example, the 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. The 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 MAC-CE as an example, the format of MAC-CE is shown in Table 6. The following will be combined with Table 6 to describe in detail how the time slot indication mode field indicates whether, in addition to the first byte, there are other bytes for indicating the time slot of the reference signal resource in the reference signal resource group.

[0223] 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 (recorded as the first byte), and the first byte includes multiple bits. The byte used to indicate the second time slot information is another byte (recorded as the second byte), and the second byte includes multiple bits. The byte used to indicate the third time slot information is another byte (recorded as the third byte), and the third byte 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 there are bytes for indicating the time slot information of the reference signal resources in the reference signal resource group in addition to the first byte. Alternatively, one of the multiple bytes for indicating time slot information corresponding to a reference signal resource group has this field, which is used to indicate whether the next byte is also used to indicate the time slot information of the reference signal resources.

[0224] Table 6

[0225]

[0226] Optionally, this field can be combined with the beam indication mode field as a field to indicate the beam and time slot indication mode, including the following modes:

[0227] Method 1: According to method 1, for each reference signal resource group among 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.

[0228] 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.

[0229] 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.

[0230] Method 4: According to method 4, for each of the N reference signal resource groups, the 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.

[0231] The specific method to be adopted may be indicated by 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.

[0232] 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, 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.

[0233] 6. Period information of reference signal resources in N reference signal resource groups.

[0234] The period information may be used to indicate the period of the reference information 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.

[0235] Optionally, the periodic information of the reference signal resources in the above-mentioned N reference signal resource groups can be indicated by any one of the following methods: a first periodic indication method or a second periodic indication method; wherein, when the resource update message adopts the first periodic indication method, 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 method, for each reference signal resource included in the above-mentioned N reference signal resource groups, the resource update message indicates a corresponding periodic information.

[0236] 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.

[0237] Among them, for each of the above-mentioned N reference signal resource groups, a corresponding period information is indicated, which can be understood as, 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 above-mentioned N reference signal resource groups, a corresponding period information is indicated, which can be understood as, 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 period. In other words, the reference signal resource and period are combined to define the resources used to transmit the reference signal from multiple dimensions (such as time domain, frequency domain, and spatial domain).

[0238] It can be understood that the above-mentioned periodic indication method is only an example and should not constitute any limitation on the embodiments of the present application. For example, a third periodic indication method may also be included. When the resource update message adopts the third periodic indication method, for the above-mentioned N reference signal resource groups, the resource update message indicates a periodic information. In other words, all reference signal resources in the N reference signal resource groups adopt this period. For another example, a fourth periodic indication method may also be included. When the resource update message adopts the fourth periodic indication method, for each reference signal resource group in the above-mentioned N reference signal resource groups, the resource update message indicates multiple periodic information, and each periodic information corresponds to part of the reference signal resources in the reference signal resource group. In other words, when a reference signal is transmitted based on part of the reference signal resources in a reference signal resource group, the reference signal may be transmitted using the period corresponding to the indicated part of the reference signal resources.

[0239] 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.

[0240] Optionally, the resource update message is also used to indicate a power offset.

[0241] The power offset may be indicated by a power offset field. One such field may be present in the resource update message, for determining the power offset of all reference signal resources. There may also be multiple such fields, each corresponding to a reference signal resource group, for determining the power offset of the reference signal resources in the reference signal resource group. There may also be multiple such fields, each corresponding to a reference signal resource, for determining the power offset corresponding to the reference signal resource.

[0242] Optionally, the above resource update message is also used to indicate a time domain symbol.

[0243] The time domain symbol may be indicated by a time domain symbol field. One such field may exist in the resource update message, for determining the time domain symbols of all reference signal resources. There may also be multiple such fields, each corresponding to a reference signal resource group, for determining the time domain symbol of the reference signal resource in the reference signal resource group. There may also be multiple such fields, each corresponding to a reference signal resource, for determining the time domain symbol corresponding to the reference signal resource.

[0244] Optionally, the resource update message is also used to indicate the frequency domain position.

[0245] The frequency domain position can be indicated by the frequency domain position information field. There may be one such field in the resource update message, which is used to determine the frequency domain position of all reference signal resources. There may also be multiple such fields, each corresponding to a reference signal resource group, which is used to determine the frequency domain position of the reference signal resources in the reference signal resource group. There may also be multiple such fields, each corresponding to a reference signal resource, which is used to determine the frequency domain position corresponding to the reference signal resource.

[0246] Optionally, the resource update message is also used to indicate the cell for updating the reference signal resource. For example, the resource update message may include a cell index, and the cell index is used to indicate the cell for updating the reference signal resource.

[0247] 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 the non-serving cell. The serving cell refers to the cell configured for the terminal device for data transmission. The non-serving cell (candidate cell) is a cell other than the serving cell.

[0248] This field can also be used to indicate a cell group, indicating which cell group's reference signal resources the resource update message is used to update. Specifically, the field can indicate the index of a cell group. Alternatively, the field can indicate the index of a cell. If the cell belongs to a cell group, the resource update message is used for all cells in the cell group.

[0249] Optionally, the resource update message is also used to indicate a bandwidth part (BWP). For example, the resource update message may include a BWP index, and the BWP index is used to indicate the BWP of the updated reference signal resource.

[0250] The BWP index may be indicated by a BWP index field. Each cell may include one or more BWPs, and the BWP index is used to indicate a specific BWP. This field may indicate which BWP's reference signal resources the resource update message is used to update.

[0251] 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 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.

[0252] In other words, the network device may also configure the terminal device with one or more of the above information through an RRC message. Among them, the network device may also configure the terminal device with 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 may also configure the terminal device with 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).

[0253] Optionally, before sending the RRC message to the terminal device, the method further includes: the network device receives terminal capability information, and the terminal capability information is used to indicate one or more of the following: whether to support updating the information of reference signal resources of N reference signal resource groups through resource update messages; whether to support, for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding beam information; whether to support, for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding beam information; whether to support, for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding time slot information; whether to support, 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 values ​​of N; whether to support the value of N to be variable; or, whether to support the reference signal resources of the N reference signal resource groups to use a common beam.

[0254] Among them, regarding the two items of whether it supports 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 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 for each reference signal resource group in the N reference signal resource groups, the resource update message indicates a corresponding beam information, or supports for each reference signal resource included in the N reference signal resource groups, the resource update message indicates a corresponding beam information.

[0255] Regarding the two items of 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 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 time slot information, the terminal 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 time slot information; or 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.

[0256] 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 practical applications, the resource update message may also include other information.

[0257] Figure 6 Detailed flow chart of the resource updating method provided in the embodiment of the present application. Figure 6 Describes the detailed process of resource update method.

[0258] In step 610, the terminal device reports the terminal capability information to the network device. Accordingly, the network device receives the terminal capability information from the terminal device. The explanation of the terminal capability information can be found above and will not be repeated here.

[0259] In step 620, the network device sends an RRC message to the terminal, 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. For a detailed description of this step, please refer to step 510, which will not be described in detail here.

[0260] In step 630, the network device sends a resource update message to the terminal device, where the resource update message is used to update the information of the reference signal resources 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. For a detailed description of this step, please refer to step 520, which will not be described in detail here.

[0261] 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.

[0262] The network device may send a reference signal to the terminal device according to the information of the reference signal resource of the reference signal resource group indicated by the resource update message. Correspondingly, the terminal device may receive the reference signal according to the information of the reference signal resource of the reference signal resource group indicated by the resource update message. It should be understood that Figure 6The embodiment of the present application takes the example of a network device sending a reference signal to a terminal device and the terminal device performing measurement, but this should not constitute any limitation on the embodiment 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 according to the resource update message, and the network device measures it.

[0263] In step 650, the terminal device measures the reference signal to obtain a measurement result.

[0264] In step 660, the terminal device reports the measurement result to the network device.

[0265] After obtaining the measurement result, the terminal device reports the measurement result to the network device. For the parameters included in the measurement result, please refer to the above explanation, which will not be repeated here.

[0266] 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 in a more timely manner, thereby facilitating the terminal device to adjust the receiving beam in time, thereby improving the transmission performance.

[0267] Figures 7 to 10 A schematic diagram of the structure of a possible communication device provided in an embodiment of the present application.

[0268] Figure 7 It is a schematic block diagram of a communication device 700 provided in an embodiment of the present application.

[0269] like Figure 7 As shown, the communication device 700 includes a first transceiver unit 710 and a second transceiver unit 720 .

[0270] The above-mentioned device 700 can be used to implement the above-mentioned Figure 5 or Figure 6 The function of the terminal device in the method embodiment shown, or the above-mentioned device 700 is used to implement the above-mentioned Figure 5 or Figure 6 The functions of the network device in the method embodiment are shown.

[0271] When the device 700 is used to implement Figure 5When the function of the terminal device in the method embodiment shown is performed, the first transceiver unit 710 can be used to receive an RRC message from a network device, and 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 information of at least one reference signal resource; the second transceiver unit 720 can be used to receive a resource update message from the network device, and 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, wherein N is a positive integer, and the resource update message is DCI or MAC-CE.

[0272] When the device 700 is used to implement Figure 5 When the network device functions in the method embodiment shown, the first transceiver unit 710 can be used to send an RRC message to the terminal device, and 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, and 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, wherein N is a positive integer, and the resource update message is DCI or MAC-CE.

[0273] For more detailed description of the first transceiver unit 710 and the second transceiver unit 720, please refer to Figure 5 or Figure 6 The relevant description in the method embodiment shown is directly obtained and will not be repeated here.

[0274] It should be understood that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processor, or may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0275] Figure 8 800 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.

[0276] like Figure 8As shown, 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 through a transmission medium, so that the device 800 can 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 implementing transceiver functions. The processor 810 may use the communication interface 820 to input and output data, and to implement Figure 5 or Figure 6 The resource updating method described in the corresponding embodiment. Specifically, the device 800 can be used to implement the functions of the network device or terminal device in the above method embodiment.

[0277] Optionally, the device 800 also includes at least one memory 830 for storing program instructions and / or data. The memory 830 is coupled to the processor 810. The coupling in the embodiment 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 coordination 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.

[0278] The specific connection medium between the processor 810, the communication interface 820 and the memory 830 is not limited in the embodiment of the present application. Figure 8 In the embodiment, the processor 810, the communication interface 820 and the memory 830 are connected via a bus 840. The bus 840 is Figure 8 The connections between the other components are shown in bold lines, which are only for illustration and are not intended to be limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 8 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0279] Fig. 9It is a structural diagram of a network device provided in an embodiment of the present application, for example, it can be a structural diagram of a base station, and the base station 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 CUs 920. 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 part is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals to baseband signals, as well as partial baseband processing. CU 920 may include at least one processor 922 and at least one memory 921. CU 920 and DU 910 can communicate through an interface, wherein the control plane (CP) interface may be Fs-C, such as F1-C, and the user plane (UP) interface may be Fs-U, such as F1-U.

[0280] The CU 920 is mainly used for baseband processing and base station control. The DU 910 and CU 920 can be physically set together or physically separated, that is, a distributed base station. The CU 920 is the control center of the base station, which can also be called a processing unit and is mainly used to complete the baseband processing function. For example, the CU 920 can be used to control the base station to execute Figure 5 or Figure 6 The method is performed by the network device in the illustrated embodiment.

[0281] 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. In other words, 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. In other words, 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.

[0282] It should be understood that Fig. 9The base station 900 shown is only one possible architecture of the network device and should not constitute any limitation to the present application. The method provided in the present application can be applied to network devices of other architectures. For example, a network device including a CU, a DU and an active antenna processing unit (active antenna anit, AAU), etc. The present application does not limit the specific architecture of the network device.

[0283] Fig.10 1 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 Figure 5 or Figure 6 The steps performed by the terminal device in the embodiment shown. Fig.10 As shown, the terminal device 1000 includes a processor 1001 and a transceiver 1002 .

[0284] 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.

[0285] Optionally, the terminal device 1000 may further include an antenna 1004, which is used to send out the uplink data or uplink control signaling output by the transceiver 1002 through a wireless signal. Optionally, the terminal device 1000 also includes a Wi-Fi module 1011, which is used to access a wireless network.

[0286] 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.

[0287] The transceiver 1002 can be used with Figure 7 The first transceiver unit 710, the second transceiver unit 720 or Figure 8 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.

[0288] 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 .

[0289] 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.

[0290] It should be understood that the operations and / or functions of each module in the terminal device 1000 are respectively for implementing the corresponding processes in the above method embodiment. For details, please refer to the description in the above method embodiment. To avoid repetition, the detailed description is appropriately omitted here.

[0291] The present application also provides a computer program product, the computer program product comprising: a computer program (also referred to as code, or instruction), when the computer program is executed, can achieve Figure 5 or Figure 6 The method described in the illustrated embodiments.

[0292] The present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program (also referred to as code or instruction). When the computer program is executed, Figure 5 or Figure 6 The method described in the illustrated embodiments.

[0293] An embodiment of the present application provides a communication system, which includes a terminal device and a network device as described above.

[0294] It should be understood that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor can be combined to perform. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0295] 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 (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.

[0296] The terms "unit", "module", etc. used in this specification may be used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. The units and modules in the embodiments of the present application have the same meaning and can be used interchangeably.

[0297] It will be appreciated by those skilled in the art that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or in combination with 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. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be 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 only schematic, for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0298] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0299] 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.

[0300] 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 (programs) 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 a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0301] 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, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform 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 USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0302] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope 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.

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