Measurement reporting method, communication apparatus, storage medium, and chip system

Abstract

Provided are a measurement reporting method, a communication apparatus, a storage medium, and a chip system. The method comprises: receiving configuration information, the configuration information being used for configuring a measurement resource and trigger event of an LTM candidate cell; performing measurement on the basis of the measurement resource to obtain a measurement result; and when the trigger event is satisfied, sending the measurement result by means of a MAC CE or UCI. During an LTM measurement, a terminal is triggered by means of a trigger event to report a measurement result, and compared with periodically reporting a measurement result, the method is conducive to reducing signaling overhead. In addition, the measurement result is reported by means of the MAC CE or the UCI, and since the MAC CE and the UCI are lower layer signaling, compared with reporting a measurement result by means of higher layer signaling, the method is conducive to increasing the speed of reporting and reducing the delay of reporting.

Description

Measurement reporting method, communication device, storage medium and chip system

[0001] The present application claims priority from the Chinese patent application No. 202411089179.2 filed on August 8, 2024, and entitled "Measurement reporting method, communication device, storage medium and chip system", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication, in particular to a measurement reporting method, a communication device, a storage medium and a chip system. BACKGROUND

[0003] In wireless communication, mobility management is to change the serving cell of a terminal so that the terminal can continuously enjoy network services when moving within the network coverage. In order to ensure the continuity of communication, especially in the connected state, mobility management is usually implemented through handover.

[0004] In the 5th generation (5G) mobile communication system, in order to reduce the handover delay and further enhance the service continuity, low-layer-based handover is considered to be used to implement mobility management, where the low-layer-based handover can be implemented through L1 / L2 triggered mobility (LTM) process. The LTM process mainly includes pre-configured candidate cells, early synchronization, and sending a handover indication to the terminal through a MAC control element (CE). Among them, the pre-configured candidate cells are some LTM candidate cells that can be pre-configured by the source cell in the handover process, and the information of these LTM candidate cells can be sent to the terminal in advance. Early synchronization means that the terminal starts to synchronize with the target cell before receiving the handover command, so that the terminal can quickly complete the handover process after the handover command arrives, reducing the handover interruption time. Before LTM handover, the terminal can measure the signal quality of the serving cell and / or LTM candidate cells and periodically report the measurement results.

[0005] However, the terminal periodically reports the measurement results, resulting in large signaling overhead. SUMMARY

[0006] The application provides a measurement reporting method, a communication device, a storage medium and a chip system, so as to reduce signaling overhead.

[0007] In a first aspect, the application provides a measurement reporting method, which can be executed by a communication device. The communication device can be a terminal, a component (such as a chip or a chip system) configured in the terminal, or a logic module or software capable of realizing all or part of the functions of the terminal, and the application does not make any limitation in this regard.

[0008] For example, the method comprises the following steps: receiving configuration information, which is used to configure measurement resources and a triggering event of an LTM candidate cell; performing measurement based on the measurement resources to obtain measurement results; and sending the measurement results through a MAC CE or uplink control information (UCI) when the triggering event is met.

[0009] Based on the above technical solution, in the LTM measurement, the triggering event is used to trigger the terminal to report the measurement results, which is beneficial to reduce the signaling overhead compared with the periodic reporting of the measurement results. In addition, since the MAC CE and the UCI belong to low-layer signaling, the reporting speed can be accelerated and the reporting delay can be reduced compared with the reporting of the measurement results through high-layer signaling.

[0010] In a second aspect, the application provides a measurement reporting method, which can be executed by a communication device. The communication device can be a network device, a component (such as a chip or a chip system) configured in the network device, or a logic module or software capable of realizing all or part of the functions of the network device, and the application does not make any limitation in this regard.

[0011] For example, the method comprises the following steps: sending configuration information, which is used to configure measurement resources and a triggering event of an LTM candidate cell; and receiving measurement results, which are carried in a MAC CE or UCI and are obtained based on the measurement resources.

[0012] Based on the above technical solution, in the LTM measurement, the network device configures the triggering event, and the triggering event is used to trigger the terminal to report the measurement results, which is beneficial to reduce the signaling overhead compared with the periodic reporting of the measurement results by the terminal. In addition, since the MAC CE and the UCI belong to low-layer signaling, the reporting speed can be accelerated and the reporting delay can be reduced compared with the reporting of the measurement results through high-layer signaling.

[0013] In some possible implementation manners, the reporting mode of the measurement result includes reporting the measurement result through a MAC CE, or reporting the measurement result through a UCI. The configuration information is further used to configure the reporting mode. That is, the network device can configure the terminal to report the measurement result through the MAC CE or the UCI. Since the MAC CE and the UCI are low-layer signaling, the network device reports the measurement result through the MAC CE or the UCI in the LTM measurement, which is beneficial to reducing the reporting delay.

[0014] Optionally, the reporting mode can be indicated through reporting configuration. For example, the configuration information includes reporting configuration, and the reporting configuration indicates the reporting mode of the measurement result.

[0015] Optionally, the reporting mode can also be determined according to a preset rule. The terminal determines the reporting mode according to the preset rule, without the need of network device configuration, which is beneficial to reducing the signaling overhead.

[0016] In some possible implementation manners, the configuration information includes an LTM measurement identifier, and the LTM measurement identifier is associated with an LTM measurement resource configuration identifier, a reporting configuration identifier, or an LTM candidate cell identifier.

[0017] In some possible implementation manners, the configuration information includes an LTM measurement identifier, and the LTM measurement identifier is associated with a measurement object (MO). The MO includes an LTM candidate cell.

[0018] In some possible implementation manners, the configuration information includes reporting configuration, and the reporting configuration is included in cell group configuration. The cell group configuration includes an LTM measurement identifier, and the LTM measurement identifier is associated with a reporting configuration identifier and an LTM measurement resource configuration identifier. Alternatively, the cell group configuration includes a reporting configuration identifier, and the reporting configuration identifier is associated with an LTM measurement resource configuration identifier. It can be understood that the reporting configuration is reporting configuration of a cell group granularity, which is beneficial to simplifying the configuration process compared with reporting configuration of a cell granularity.

[0019] In some possible implementation manners, the configuration information is further used to configure a scheduling request identifier. The scheduling request identifier is used to indicate a scheduling request, and the scheduling request is used to request scheduling resources from the network device.

[0020] By configuring the terminal with the scheduling request identifier, the network device can more quickly identify the corresponding scheduling request, and then more quickly schedule resources for the terminal to report the measurement result, thereby facilitating reduction of the reporting delay.

[0021] In some possible implementation manners, the scheduling request identifier is included in a reporting configuration, and the configuration information includes the reporting configuration; or the scheduling request identifier is included in an LTM measurement identifier configuration, and the configuration information includes the LTM measurement identifier configuration.

[0022] In some possible implementation manners, the scheduling request identifier is associated with a first identifier, and the first identifier includes one or more of a reporting configuration identifier, an LTM candidate cell identifier, an LTM measurement identifier, or an LTM measurement resource configuration identifier, and the scheduling request identifier is used to indicate a scheduling request, and the scheduling request is used to request a scheduling resource from the network device.

[0023] That is, the terminal can determine the scheduling request identifier corresponding to the first identifier according to the first identifier, without additional configuration of the scheduling request identifier, which helps to reduce signaling overhead.

[0024] Optionally, the terminal can send a scheduling request based on the scheduling request identifier. Correspondingly, the network device receives the scheduling request.

[0025] In some possible implementation manners, when any of the following conditions is met, the scheduling request is canceled: a downlink control information (DCI) is received, the DCI is used to activate semi-persistent channel state information (CSI) reporting; a first MAC CE is received, the first MAC CE is used to activate semi-persistent CSI reporting; or the measurement result is reported through a MAC CE or CSI.

[0026] The CSI reporting is a possible implementation of UCI reporting. The scheduling request can be periodic, in other words, the terminal can periodically send the scheduling request. The cancellation of the scheduling request can be understood as that the terminal no longer sends the scheduling request. For example, after the terminal receives the DCI used to activate the semi-persistent CSI reporting, the terminal can no longer send the scheduling request. It can be understood that, when the DCI is used to activate the semi-persistent CSI reporting, the terminal has obtained a resource for reporting the measurement result, and does not need to send the scheduling request any more. By canceling the scheduling request, the terminal does not need to continue to send the scheduling request, which helps to reduce signaling overhead.

[0027] In some possible implementation manners, the reporting granularity of the measurement result comprises a first granularity or a second granularity. When the reporting granularity is the first granularity, the measurement result comprises a measurement result of each LTM candidate cell in the one or more LTM candidate cells, or a measurement result of an LTM candidate cell with the strongest signal strength in the one or more LTM candidate cells, or a measurement result of LTM candidate cells with the strongest signal strength in the first N positions in the one or more LTM candidate cells. When the reporting granularity is the second granularity, the measurement result comprises a measurement result of all reference signals corresponding to each LTM candidate cell in the one or more LTM candidate cells, or a measurement result of a reference signal with the strongest signal strength in all reference signals corresponding to each LTM candidate cell, or a measurement result of reference signals with the strongest signal strength in the first M positions in all reference signals corresponding to each LTM candidate cell, where M and N are positive integers.

[0028] When the reporting granularity is the first granularity, the network device can determine an LTM candidate cell with a stronger signal strength, and then make a reasonable decision, for example, switching to which LTM candidate cell. When the reporting granularity is the second granularity, the network device can more finely understand the signal strengths of reference signals in the LTM candidate cells, and then make a more finely decision.

[0029] In some possible implementation manners, the method further comprises: sending, by the network device, first indication information, where the first indication information is used to indicate that the reporting granularity of the measurement result is the first granularity or the second granularity. Correspondingly, the terminal receives the first indication information.

[0030] By indicating, by the network device, the reporting granularity of the measurement result to the terminal, the network device can flexibly adjust the reporting granularity of the measurement result according to actual needs.

[0031] In some possible implementation manners, when the first indication information indicates that the reporting granularity is the first granularity, the first indication information is further used to indicate a value of N, or when the first indication information indicates that the reporting granularity is the second granularity, the first indication information is further used to indicate a value of M.

[0032] By configuring, by the network device, the value of N or M, the network device can flexibly adjust the number of LTM candidate cells or reference signals reported by the terminal.

[0033] With the first aspect and the second aspect, in some possible implementation manners, the configuration information is further used to configure a maximum number of reporting; and the sending the measurement result by the MAC CE or the UCI in the case where the triggering event is met comprises: in the case where the triggering event is met and the number of reporting is less than or equal to the maximum number, the measurement result is sent by the MAC CE or the UCI.

[0034] The network device limits the maximum number of reporting, which is beneficial to reduce signaling overhead, reduce the possibility that the measurement result occupies too many resources, and further improve the overall throughput of the network. In addition, it is also beneficial to save the energy consumption of the terminal.

[0035] In a third aspect, the present application provides a communication apparatus, which can implement the method in the first aspect and any possible implementation manner of the first aspect, or implement the method in the second aspect and any possible implementation manner of the second aspect. The apparatus includes corresponding units for performing the above method. The units included in the apparatus can be implemented by software and / or hardware.

[0036] In a fourth aspect, the present application provides a communication apparatus, which includes a processor. The processor is coupled with 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 manner of the first aspect, or implement the method in the second aspect and any possible implementation manner of the second aspect.

[0037] Optionally, the apparatus further includes a communication interface, and the processor is coupled with the communication interface. The communication interface is configured to receive a signal from another communication device outside the apparatus and transmit the signal to the processor, or send a signal from the processor to another communication device outside the apparatus. Exemplarily, the communication interface can be a transceiver, a circuit, a bus, a module or other types of communication interfaces.

[0038] Optionally, the apparatus further includes a memory, and the processor is coupled with the memory. The memory is configured to store program instructions and data.

[0039] In a fifth aspect, the present application provides a computer readable storage medium, which stores a computer program or instructions. When the computer program or instructions are executed, the method in the first aspect and any possible implementation manner of the first aspect is implemented, or the method in the second aspect and any possible implementation manner of the second aspect is implemented.

[0040] In a sixth aspect, the present application provides a computer program product, which includes instructions. When the instructions are executed, the method in the first aspect and any possible implementation manner of the first aspect is implemented, or the method in the second aspect and any possible implementation manner of the second aspect is implemented.

[0041] In a seventh aspect, the present application provides a chip system, which comprises at least one processor, configured to support the functions described in the first aspect and any possible implementation manner of the first aspect, or, configured to support the functions described in the second aspect and any possible implementation manner of the second aspect, such as receiving or processing data involved in the above method, etc.

[0042] In a possible design, the chip system further comprises a memory configured to store program instructions and data, and the memory is located in the processor or outside the processor.

[0043] The chip system can be composed of a chip, or can include a chip and other discrete devices.

[0044] In an eighth aspect, the present application provides a communication system, which comprises a terminal configured to implement the method in the first aspect and any possible implementation manner of the first aspect, and a network device configured to implement the method in the second aspect and any possible implementation manner of the second aspect.

[0045] It should be understood that the third aspect to the eighth aspect of the present application correspond to the technical solutions of the first aspect and the second aspect of the present application, and the beneficial effects obtained by each aspect and the corresponding possible implementation manners are similar, which will not be described herein again. BRIEF DESCRIPTION OF DRAWINGS

[0046] FIG. 1 is a schematic diagram of a system architecture suitable for the method provided in the embodiments of the present application;

[0047] FIG. 2 is a schematic diagram of a protocol stack of a radio access network (RAN) device provided in the embodiments of the present application;

[0048] FIG. 3 is a schematic diagram of a CSI measurement configuration framework based on layer 1 provided in the embodiments of the present application;

[0049] FIG. 4 is a schematic diagram of two ways of semi-persistent reporting provided in the embodiments of the present application;

[0050] FIG. 5 is a schematic diagram of a mobility measurement configuration based on layer 3 provided in the embodiments of the present application;

[0051] FIG. 6 is a schematic diagram of a framework of LTM measurement configuration provided in the embodiments of the present application;

[0052] FIG. 7 is a schematic flowchart of a measurement reporting method provided in the embodiments of the present application;

[0053] FIG. 8 is a schematic diagram of the association relationship among an LTM measurement identifier, an LTM measurement resource configuration identifier and a reporting configuration identifier provided in the embodiments of the present application;

[0054] FIG. 9 is a schematic diagram of reporting configuration provided by an embodiment of the present application;

[0055] FIG. 10 is a schematic block diagram of a communication device provided by an embodiment of the present application;

[0056] FIG. 11 is another schematic block diagram of a communication device provided by an embodiment of the present application;

[0057] FIG. 12 is a schematic diagram of an open radio access network (O-RAN or ORAN) system provided by an embodiment of the present application;

[0058] FIG. 13 is a network element function division and protocol layer structure diagram of an O-RAN device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0059] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0060] The technical solutions provided by the present application can be applied to various communication systems, such as a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), a sidelink communication system, a universal mobile telecommunication system (UMTS), a worldwide interoperability for microwave access (WiMAX) communication system, a 5G mobile communication system or a new radio access technology (NR). The 5G mobile communication system can include non-standalone (NSA) and / or standalone (SA).

[0061] The technical solutions provided by the present application can also be applied to future communication systems. The present application does not limit this.

[0062] FIG. 1 is a schematic diagram of a system architecture suitable for the method provided by an embodiment of the present application. Understandably, the system architecture shown in FIG. 1 is used to more clearly illustrate the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application.

[0063] As shown in FIG. 1, the system includes a 5G core network (5G core, 5GC) and a RAN (a next generation (NG)-RAN), the 5GC includes core network devices 110 and 120, which can be access and mobility management functions (AMF) / user plane functions (UPF), for example. The NG-RAN includes wireless access network devices 130-160, which can be next generation node base stations (gNBs) and / or evolved Node Bs (eNBs), for example, the wireless access network devices 130 and 140 are gNBs, and the wireless access network devices 150 and 160 are eNBs. The plurality of wireless access network devices can be connected to each other through an Xn interface, and can be connected to the 5GC through an NG interface, more specifically, connected to the AMF through an N2 interface and connected to the UPF through an N3 interface.

[0064] It should be understood that FIG. 1 is only an example, showing two core network devices and four wireless access network devices, but this should not constitute any limitation on the present application. The number of each device can be one or more. The access network devices connected to the same core network can be one or more.

[0065] It should also be understood that although FIG. 1 does not show it, one or more terminals can be connected under each wireless access network device, and the terminals can be communicatively connected with the wireless access network devices.

[0066] In the present application, the terminal can also be referred to as a user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal device, a wireless communication device, a user agent or a user device.

[0067] The terminal can be a device that provides voice / data connectivity to a user, for example, a handheld device with wireless connection function, a vehicle-mounted device, etc. Currently, some examples of terminals can be: a mobile phone, a pad, a computer (such as a notebook computer, a palm computer, etc.) with wireless transceiver function, a mobile internet device (MID), a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self driving, a drone, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved public land mobile network (PLMN), etc.

[0068] In addition, the terminal can also be a terminal in an internet of things (IoT) system. IoT is an important part of the future development of information technology, and its main technical feature is to connect objects through communication technology and network, so as to realize the intelligent network of man-machine interconnection and object-object interconnection. IoT technology can achieve mass connection, deep coverage and terminal power saving through, for example, narrow band (NB) technology.

[0069] In addition, the terminal can also include smart printers, train detectors, gas station sensors, and the main functions include collecting data (part of the terminal), receiving control information and downlink data of network equipment, and sending electromagnetic waves to transmit uplink data to network equipment.

[0070] In this application, the radio access network device can also be referred to as an access network device, a network device. The radio access network device can include, for example, but is not limited to: a radio network controller (RNC), an eNB, a base station controller (BSC), a base transceiver station (BTS), a home base station (for example, a home evolved node B, or a home node B, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (Wi-Fi) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), and the like, and can also be a gNB or a transmission point (TRP or TP) in a 5G (such as NR) system, one or a group (including multiple antenna panels) of antenna panels of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (DU), or a base station in a future communication system, and the like. The eNB is a device deployed in a radio access network to meet the 4G standard and provide wireless communication functions for terminals; the gNB is a device deployed in a radio access network to meet the 5G standard and provide wireless communication functions for terminals.

[0071] The protocol stack architecture of the radio access network device will be described in detail below in conjunction with FIG. 2.

[0072] FIG. 2 is a protocol stack diagram of a radio access network device provided by an embodiment of the present application. a) in FIG. 2 shows the protocol stack of the control plane (CP), and b) in FIG. 2 shows the protocol stack of the user plane (UP).

[0073] The radio access network device can include a central unit (CU) and a DU. The split of the CU and the DU can be according to a protocol stack, and one possible way is to deploy the radio resource control (RRC) layer, the service data adaptation protocol (SDAP) layer, and the packet data convergence protocol (PDCP) layer in the CU, and the remaining radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer in the DU.

[0074] One CU can be connected with one DU, or one CU can be connected with multiple DUs, which can save costs and facilitate network expansion. That is, the radio access network device can include one CU and one or more DUs. The CU and the DU are connected through an F1 interface, and the CU and the core network are connected through an NG interface.

[0075] Optionally, the CU can be in a CU-UP and CU-CP separated form. That is, the CU can include a CU-CP and a CU-UP.

[0076] In a single air interface scenario, the terminal can access the CU through the DU, where the RLC layer, the MAC layer, and the PHY layer corresponding to the terminal are located on the DU, and the PDCP layer, the SDAP layer, and the RRC layer corresponding to the terminal are located on the CU.

[0077] For the control plane, as shown in a) of FIG. 2, the terminal and the CU establish peer RRC and PDCP layers. The terminal and the DU are connected through a user equipment interface (which can be referred to as a Uu interface), and the terminal and the DU establish peer RLC, MAC, and PHY layers. The DU and the CU are connected through an F1 control plane (F1-C) interface, and the DU and the CU establish peer F1 application protocol (F1AP) layers, stream control transmission protocol (SCTP) layers, internet protocol (IP) layers, layer 1, and layer 2. The layer 1 can include the PHY layer, and the layer 2 can include the RLC layer and the MAC layer. Layers above layer 2 can be referred to as layer 3.

[0078] For the user plane, as shown in b) of FIG. 2, the terminal and the CU establish peer-to-peer SDAP and PDCP layers. The terminal and the DU are connected through a Uu interface, and the terminal and the DU establish peer-to-peer RLC, MAC and PHY layers. The DU and the CU are connected through an F1-user plane (F1-U) interface, and the DU and the CU establish peer-to-peer general packet radio service (GPRS) tunneling protocol-user plane (GTP-U), user datagram protocol (UDP), IP, layer 1 and layer 2.

[0079] The CSI measurement configuration based on layer 1, the mobility measurement configuration based on layer 3 and the measurement configuration based on LTM will be explained in detail below in combination with the accompanying drawings.

[0080] I. CSI measurement configuration based on layer 1: mainly used to obtain channel state information, so as to facilitate the network device to perform resource scheduling, beamforming and optimization of multiple input multiple output (MIMO) and other technologies.

[0081] The CSI measurement configuration based on layer 1 is a configuration of serving cell granularity.

[0082] FIG. 3 is a schematic diagram of a CSI measurement configuration framework based on layer 1 provided by an embodiment of the present application.

[0083] As shown in FIG. 3, the CSI measurement configuration based on layer 1 includes resource configuration (resource config), reporting configuration (report config) and aperiodic / semi-perisistent (SP) trigger state configuration.

[0084] The resource configuration, the reporting configuration and the aperiodic / semi-perisistent trigger state configuration will be described in detail below.

[0085] 1. Resource configuration: The network device can configure a resource pool, which refers to a set of resources for CSI measurement, such as including channel state information reference signal (CSI-RS) resources, synchronization signal block (SSB) resources, or interference management (IM) resources. Exemplarily, the CSI-RS resource pool can be regarded as a set of reference signal resources for CSI measurement; the IM resource pool can be regarded as a set of resources for interference measurement; and the SSB resource pool can be regarded as a set of synchronization signal block resources for CSI measurement.

[0086] After the network device configures the resource pool, one or more resources are selected from the resource pool, and identifiers (IDs) (resource configuration IDs) are assigned to the one or more resources.

[0087] 2. Reporting configuration: used to configure reporting types, reporting contents, and the like. The reporting configuration can carry a resource configuration ID, so that the terminal determines the corresponding resource configuration based on the resource configuration ID, and performs measurement based on the resource configuration.

[0088] 3. Aperiodic / semi-persistent trigger state configuration: CSI reporting is divided into periodic reporting, semi-persistent reporting (also referred to as semi-static reporting), and aperiodic reporting, wherein the semi-persistent reporting and the aperiodic reporting can be configured with one or more trigger states, and the one or more trigger states are associated with the reporting configuration ID.

[0089] The semi-persistent reporting can be divided into persistent reporting based on a physical uplink shared channel (PUSCH) and semi-persistent reporting based on a physical uplink control channel (PUCCH). The two reporting modes will be explained below in combination with FIG. 4.

[0090] FIG. 4 is a schematic diagram of two semi-persistent reporting modes provided by an embodiment of the present application. a) in FIG. 4 shows semi-persistent reporting based on a PUSCH, and b) in FIG. 4 shows semi-persistent reporting based on a PUCCH.

[0091] As shown in a) of FIG. 4, the PUSCH-based semi-persistent reporting is activated and deactivated by DCI (such as DCI 0_1). Exemplarily, the network device can indicate one of one or more trigger states by DCI, and the terminal reports CSI according to the reporting configuration corresponding to the trigger state.

[0092] As shown in b) of FIG. 4, the PUCCH-based semi-persistent reporting is activated and deactivated by MAC CE. Exemplarily, the network device can indicate a specific reporting configuration identifier by MAC CE to activate / deactivate the corresponding reporting configuration. In the MAC CE, a serving cell identifier and a bandwidth part (BWP) identifier are also carried.

[0093] II. Layer 3-based mobility measurement configuration: mainly to ensure that the terminal can maintain the connection and service quality during the movement. The mobility measurement mainly includes measurement configuration, measurement, event evaluation, and measurement reporting. The above steps will be described in detail in combination with FIG. 5. FIG. 5 is a schematic diagram of a layer 3-based mobility measurement configuration provided by an embodiment of the present application.

[0094] 1. Measurement configuration: the network device sends a measurement configuration to the terminal, and correspondingly, the terminal receives the measurement configuration.

[0095] As shown in a) of FIG. 5, the layer 3-based measurement configuration includes MO configuration, reporting configuration, measurement identifier configuration (measIdconfig), and measurement gap configuration (measgapconfig). The measurement identifier configuration is used to configure one or more measurement identifiers, and each measurement identifier is associated with a measurement object configuration and a reporting configuration.

[0096] As shown in b) of FIG. 5, the measurement object configuration can include SSB frequency, SSB subcarrier spacing, SSB measurement time configuration, reference frequency of CSI-RS, reference signal configuration, SSB-related mobility measurement configuration, CSI-RS mobility measurement resource configuration, include cell list, and the like. The reporting configuration mainly includes trigger type (event trigger, periodic trigger, CGI reporting), and related configuration for each event type, and the like. It can be understood that b) of FIG. 5 only shows part of the configuration, which should not constitute any limitation to the present application. The specific configuration parameters can refer to the existing protocol, which will not be described here in detail.

[0097] 2. Measurement: after receiving the measurement configuration, the terminal measures the reference signal based on the above measurement configuration to obtain the measurement result.

[0098] 3. Event evaluation: The reporting of mobility measurement mainly includes three triggering modes: periodic triggering, single reporting based on event triggering, and periodic reporting based on event triggering. Single reporting based on event triggering refers to that when an event occurs, the terminal is triggered to perform single measurement and reporting; periodic reporting based on event triggering refers to that when an event occurs, the terminal is triggered to perform periodic measurement and reporting.

[0099] 4. Measurement reporting: As shown in Table 1, the content of the measurement report mainly includes measurement identification (MeasID), serving cell measurement quantity (measResultServingMOList), and neighbor cell measurement quantity (measResultNeighCells). Among them, the network can obtain the measurement object identification and reporting configuration identification corresponding to this reporting, the measurement event threshold triggered by the event, the periodic triggering purpose, and the like according to the measurement identification and the measurement configuration stored by itself. The serving cell measurement quantity includes the physical cell identification, the result of the cell measurement quantity (such as the reference signal received power (RSRP)), the measurement result of the reference signal (such as the measurement result for a single SSB), and the like. The neighbor cell measurement quantity includes the physical cell identification, the triggering quantity corresponding to the cell, the cell identification, and the like.

[0100] Table 1

[0101] III. Measurement configuration based on LTM: In order to reduce the handover delay and interruption time, and improve the user experience of the terminal and the continuity of the service, layer 1 and / or layer 2 handover can be performed. Layer 1 and / or layer 2 handover can also be referred to as low-layer handover, or LTM handover. The LTM handover process mainly includes pre-configuring candidate cells, early synchronization, and sending a handover indication to the terminal through a MAC CE. Among them, pre-configuring candidate cells refers to that some LTM candidate cells can be pre-configured by the source cell in the handover process, and the information of the LTM candidate cells can be sent to the terminal in advance. Early synchronization refers to that the terminal starts to synchronize with the target cell before receiving the handover command, so that the terminal can quickly complete the handover process after the handover command arrives, and reduce the handover interruption time. Before handover, the terminal can measure the signal quality of the serving cell and / or the LTM candidate cell, and periodically report the measurement result.

[0102] FIG. 6 is a schematic diagram of a framework of LTM measurement configuration provided by an embodiment of the present application.

[0103] As shown in FIG. 6, the measurement configuration of the LTM mainly includes a reporting configuration and an LTM resource configuration. The reporting configuration (which can be referred to as LTM reporting configuration for the sake of distinction) is similar to the reporting configuration in the layer 1-based CSI measurement configuration. The reporting configuration is a configuration at the granularity of a serving cell, that is, the network device corresponds to one or more sets of reporting configurations for each serving cell. The reporting configuration can include a reporting configuration identifier and an LTM resource configuration identifier. The reporting configuration identifier can be associated with an aperiodic triggering state or a PUSCH-based semi-persistent triggering state.

[0104] The LTM resource configuration is different from the layer 1-based CSI resource configuration. As shown in FIG. 6, the LTM resource configuration is configured in the LTM configuration (LTM config). The LTM candidate (LTM candidate) is configured with reference signal resources related to the LTM candidate cell. The network device can select one or more reference signal resources from the LTM candidate, form a resource set, and assign an LTM resource configuration identifier (LTM-CSI-resource config ID).

[0105] In the LTM-based measurement, the terminal periodically reports the measurement result, resulting in a large signaling overhead.

[0106] Therefore, the present application provides a measurement reporting method. In the LTM measurement, the network device configures a triggering event for the terminal. The terminal reports the measurement result when the triggering event is met. Compared with the periodic reporting, the method is beneficial to reduce the signaling overhead. In addition, the measurement result is reported through the MAC CE or the UCI. The measurement result is reported through the low-layer signaling, which is helpful to reduce the reporting delay.

[0107] Before describing the embodiments of the present application in detail, the following points are first explained.

[0108] First, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the same items or similar items with basically the same functions and effects are distinguished by using "first", "second", etc. For example, the first configuration information and the second configuration information are only used to distinguish different configuration information, and do not limit the order. Those skilled in the art can understand that "first", "second", etc. do not limit the quantity and execution order, and "first", "second", etc. also do not necessarily mean different.

[0109] Second, in the embodiments shown in the present document, each term and English abbreviation, such as channel state information (CSI), synchronization signal block (SSB), or reference signal (RS), is an exemplary example given for the convenience of description, and should not constitute any limitation on the present application. The present application does not exclude the possibility of defining other terms capable of achieving the same or similar functions in existing or future protocols.

[0110] Third, the "protocol" involved in the embodiments of the present application can refer to a standard protocol in the field of communication, which can include LTE protocol, NR protocol, and related protocols applied in future communication systems, and the present application does not limit this.

[0111] Fourth, "at least one" means one or more, and "multiple" means two or more. The association relationship between the associated objects is described, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after it. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple 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, and c can be single or multiple.

[0112] Fifth, in the present application, "indication" can include direct indication and indirect indication, and can also include explicit indication and implicit indication. The information indicated by a certain information is called to-be-indicated information, and there are many ways to indicate the to-be-indicated information in the specific implementation process, for example, but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or the index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, where the other information and the to-be-indicated information have an association relationship; only a part of the to-be-indicated information can be indicated, and the other part of the to-be-indicated information is known or agreed in advance, for example, the arrangement order of each information can be used to indicate a specific information, thereby reducing the indication overhead to a certain extent. The present application does not limit the specific way of indication. It can be understood that for the sender of the indication information, the indication information can be used to indicate the to-be-indicated information, and for the receiver of the indication information, the indication information can be used to determine the to-be-indicated information.

[0113] Sixthly, in the present application, "sending" and "receiving" refer to the direction of signal transmission. For example, "sending information to a terminal" can be understood as that the destination of the information is the terminal, which can include direct transmission through the air interface, or indirect transmission through the air interface by other units or modules. "Receiving configuration information from a network device" can be understood as that the source of the configuration information is the network device, which can include direct reception from the network device through the air interface, or indirect reception from the network device through the air interface from other units or modules. "Sending" can also be understood as "output" of a chip interface, and "receiving" can also be understood as "input" of a chip interface.

[0114] In other words, sending and receiving can be between devices, such as between a network device and a terminal, or within a device, such as between components, modules, chips, software modules or hardware modules within a device through a bus, wire or interface.

[0115] It can be understood that the information may be processed as necessary, such as encoding and modulation, before being sent from the source to the destination. The destination can also perform corresponding processing, such as decoding and demodulation, after receiving the information from the source, so as to interpret the valid information from the source. Similar expressions in the present application can be similarly understood, and will not be repeated here.

[0116] Seventhly, in the present application, "when", "in the case of", "if" and other descriptions refer to the objective situation in which the device (such as a network device or a terminal) will make corresponding processing, and are not limited by time. It is not required that the device (such as a network device or a terminal) must have a judgment action when it is implemented, and it does not mean that there are other limitations.

[0117] Eighthly, the corresponding relationship 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 other values can be configured. The present application does not limit the corresponding relationship between the configuration information and the parameters. For example, the corresponding relationship shown in some rows in the table in the present application can not be configured. For another example, the above table can be appropriately deformed, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names understandable by the communication device, and the values or representations of the parameters can also use other values or representations understandable by the communication device. The above tables can also use other data structures when implemented, such as arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, etc.

[0118] Ninthly, in the present application, predefine can also be understood as define, predefine, store, pre-store, pre-negotiate, pre-configure, solidify, or pre-burn.

[0119] The measurement reporting method provided by the present application will be described in detail below with reference to the accompanying drawings. The method is described below by way of example of the interaction between a network device and a terminal, without constituting any limitation on the present application. The network device can also be replaced by a component (such as a chip, a chip system, a processor, etc.) configured in the network device, or a logic module or software capable of realizing all or part of the functions of the network device. The terminal can also be replaced by a component (such as a chip, a chip system, a processor, etc.) configured in the terminal, or a logic module or software capable of realizing all or part of the functions of the terminal.

[0120] FIG. 7 is a schematic flowchart of a measurement reporting method 700 provided by an embodiment of the present application. The various steps in the method 700 will be described in detail below.

[0121] In step 710, the network device sends configuration information for configuring the measurement resource and the triggering event of the LTM candidate cell. Correspondingly, the terminal receives the above-mentioned configuration information.

[0122] The above-mentioned configuration information is used for configuring LTM measurement and reporting, or in other words, the above-mentioned configuration information is used for configuring layer 1 and / or layer 2 measurement and reporting. The above-mentioned configuration information can also be referred to as LTM configuration information, L1 / L2 switching configuration information, or LTM candidate cell configuration information, etc., and the present application does not limit the name of the above-mentioned configuration information.

[0123] The above-mentioned configuration information can include the configuration information of one or more LTM candidate cells. Optionally, the above-mentioned configuration information includes one or more of the following: LTM measurement identifier configuration, LTM measurement resource configuration, and reporting configuration. The LTM measurement identifier configuration includes one or more LTM measurement identifiers (the above-mentioned configuration information includes LTM measurement identifiers), and the LTM measurement resource configuration can include one or more LTM measurement resources. The triggering event for triggering the terminal to report the measurement result can be included in the reporting configuration, which can be used to trigger the terminal to report the measurement result periodically, or can be used to trigger the terminal to report the measurement result once, and the present application does not limit this. The above-mentioned triggering event can be one or more of the following, for example:

[0124] LTM event A1: the signal quality of the serving cell is greater than or equal to a first preset threshold. Event A1 can be used to confirm that the signal quality of the currently connected cell is good.

[0125] LTM Event A2: The signal quality of the serving cell is less than or equal to a second preset threshold. Event A2 can be used to detect that the signal quality of the currently connected cell is deteriorating.

[0126] LTM Event A3: The signal quality of a neighbor cell (or LTM candidate cell) is greater than or equal to the signal quality of the serving cell plus an offset. Event A3 can be used to trigger the terminal to handover to a neighbor cell with better signal quality.

[0127] LTM Event A4: The signal quality of a neighbor cell is greater than or equal to a third preset threshold. Event A4 can be used to determine a target cell, which is a cell that the terminal can handover to.

[0128] LTM Event A5: The signal quality of the serving cell is less than or equal to a second preset threshold, and the signal quality of a neighbor cell is greater than or equal to a third preset threshold. LTM Event A5 can be used to comprehensively consider the signal quality of the serving cell and the neighbor cell.

[0129] LTM Event A6: The signal quality of a neighbor cell exceeds the signal quality of the serving cell plus a specific threshold value.

[0130] In the above LTM Events A1 to A6, the signal quality can be a cell-level signal quality (e.g., processed from the signal strength of one or more reference signals of the cell), or a beam-level signal quality (e.g., the signal quality of a beam (or reference signal) of the cell). For example, LTM Event A1: The cell-level signal quality of the serving cell is greater than or equal to a first preset threshold. For another example, LTM Event A3: The cell-level signal quality of a neighbor cell is greater than or equal to the cell-level signal quality of the serving cell plus an offset.

[0131] The network device configuration triggering event specifically includes a configuration event type, a measurement quantity, an event triggering condition (report on leave), a reporting quantity, a delay triggering time (time-to-trigger, TTT), and the like, that is, the above reporting configuration can include an event type, a measurement quantity, an event triggering condition, a reporting quantity, a delay triggering time, and the like. The event type is used to specify an event triggering the terminal to report a measurement result, such as LTM events A1, A2, A3, A4, or A5, and the like. The measurement quantity is used to specify a signal quality index that needs to be measured, such as a reference signal received power (reference signal received power, RSRP), a reference signal received quality (reference signal received quality, RSRQ), or a signal to interference plus noise ratio (signal to interference plus noise ratio, SINR), and the like. The event triggering condition includes a specific condition and a preset threshold of triggering the event. For example, taking the LTM event A2 as an example, the event triggering condition includes a second preset threshold. The reporting quantity is used to specify the number of measurement results included in each report. For example, the measurement results of the neighbor cells with the top N signal qualities can be specified. The delay triggering time refers to a period of time during which the time triggering condition is continuously met before triggering the reporting of the measurement result.

[0132] Optionally, the configuration information includes an LTM measurement identifier, which is associated with an LTM measurement resource configuration identifier, an LTM candidate cell identifier, or a reporting configuration identifier.

[0133] In the present application, the LTM measurement identifier is used to identify an LTM measurement, the LTM measurement resource configuration identifier is used to identify an LTM measurement resource configuration, and the LTM measurement resource configuration can include one or more LTM measurement resources. The LTM candidate cell identifier is used to identify an LTM candidate cell, and one LTM candidate cell can correspond to one or more LTM measurement resources, which is not limited in the present application.

[0134] The association relationship among the LTM measurement identifier, the LTM measurement resource configuration identifier, and the reporting configuration identifier will be described in detail below in combination with FIG. 8.

[0135] FIG. 8 is a schematic diagram of the association relationship among the LTM measurement identifier, the LTM measurement resource configuration identifier, and the reporting configuration identifier according to an embodiment of the present application.

[0136] In FIG. 8, the configuration information can include an LTM measurement identification list, an LTM measurement resource configuration list, and a reporting configuration list. The LTM measurement identification list can include one or more LTM measurement identifications (three are shown in FIG. 8), each of which is used to identify an LTM measurement. The LTM measurement resource configuration list (three are shown in FIG. 8) includes one or more LTM measurement resource configuration identifications, each of which is used to identify an LTM measurement resource configuration. The reporting configuration list (two are shown in FIG. 8) includes one or more reporting configurations, each of which can include a triggering event, a reporting mode, a measurement interval, and the like. Different LTM measurement identifications can be associated with the same reporting configuration or different reporting configurations, which is not limited in the present application.

[0137] As shown in FIG. 8, LTM measurement identification 1 is associated with LTM measurement resource configuration identification 2 and reporting configuration 2, LTM measurement identification 2 is associated with LTM measurement resource configuration identification 1 and reporting configuration 2, and LTM measurement identification 3 is associated with LTM measurement resource configuration identification 3 and reporting configuration 1.

[0138] It should be understood that the association relationship of the LTM measurement identification, the LTM measurement resource configuration identification, and the reporting configuration shown in FIG. 8 is only an example, which should not constitute any limitation on the present application. For example, LTM measurement identification 1 and LTM measurement identification 2 can also be associated with different reporting configurations.

[0139] Optionally, the configuration information includes an LTM measurement identification, and the LTM measurement identification is associated with an MO, which includes an LTM candidate cell.

[0140] For example, the configuration information includes an LTM measurement identification, and the LTM measurement identification is associated with an MO, which includes an LTM candidate cell in an include cell list (as shown in the include cell list in the MO in FIG. 5b).

[0141] Optionally, the configuration information can be carried in an RRC message. For example, the configuration information can be carried in an RRC reconfiguration message.

[0142] Optionally, the RRC message can further include configuration information of a serving cell, which can be used to measure the signal quality of the serving cell.

[0143] Optionally, the reporting mode of the measurement result comprises reporting the measurement result through a MAC CE, or reporting the measurement result through a UCI; the configuration information is further used for configuring the reporting mode; or the reporting mode is determined according to a preset rule.

[0144] In a possible implementation, the network device configures the reporting mode for the terminal, that is, the network device configures whether the measurement result is reported through a MAC CE or a UCI for the terminal. For example, the reporting mode can be included in the reporting configuration. Alternatively, the reporting mode can be included in the LTM measurement resource configuration, which is not limited in the present application.

[0145] By way of example but not limitation, the network device can indicate the reporting mode through a 1-bit, for example, the bit is set to 1 to indicate that the measurement result is reported through a MAC CE, and the bit is set to 0 to indicate that the measurement result is reported through a UCI.

[0146] In another possible implementation, the terminal determines the reporting mode according to a preset rule. For example, if the measurement identity carried in the RRC message is associated with an LTM measurement resource, the measurement result is reported through a MAC CE or a UCI; if the measurement identity carried in the RRC message is associated with an MO, the measurement result is reported through an RRC.

[0147] Optionally, the configuration information comprises a reporting configuration, and the reporting configuration is included in a cell group configuration; the cell group configuration comprises an LTM measurement identity, and the LTM measurement identity is associated with a reporting configuration identity and an LTM measurement resource configuration identity; or the cell group configuration comprises the reporting configuration identity, and the reporting configuration identity is associated with the LTM measurement resource configuration identity.

[0148] That is, the reporting configuration can be a cell group level reporting configuration. The cell group level reporting configuration will be described in detail below with reference to FIG. 9.

[0149] FIG. 9 is a schematic diagram of a reporting configuration according to an embodiment of the present application.

[0150] As shown in FIG. 9, the RRC resource configuration comprises a cell group configuration and an LTM configuration. In a possible design, as shown in the dashed part in FIG. 9, the cell group configuration comprises an LTM measurement identity, and the LTM measurement identity is associated with an LTM measurement resource configuration identity and a reporting configuration. In another possible design, as shown in the thick solid part in FIG. 9, the cell group configuration comprises a reporting configuration, and the reporting configuration is associated with an LTM measurement resource configuration identity.

[0151] As shown in FIG. 9, the LTM configuration includes an LTM measurement resource configuration. The LTM measurement resource configuration includes an SSB resource set and a CSI-RS resource set. The SSB resource set includes an SSB resource identifier. The CSI-RS resource set includes a CSI-RS resource identifier.

[0152] The LTM configuration can also include an LTM candidate cell configuration. The LTM candidate cell configuration includes an SSB-related measurement configuration or a CSI-RS-related measurement configuration. Each LTM candidate cell configuration includes an LTM candidate cell identifier.

[0153] In step 720, the terminal performs measurement based on the measurement resource to obtain a measurement result.

[0154] In this application, performing measurement based on the measurement resource can be understood as performing measurement on a signal (such as CSI-RS or SSB) in the measurement resource.

[0155] The measurement result will be explained in detail below.

[0156] The reporting granularity of the measurement result includes a first granularity or a second granularity. When the reporting granularity is the first granularity, the measurement result includes a measurement result of each LTM candidate cell in one or more LTM candidate cells, or a measurement result of an LTM candidate cell with the strongest signal strength in the one or more LTM candidate cells, or a measurement result of an LTM candidate cell with a signal strength in the top N positions in the one or more LTM candidate cells. When the reporting granularity is the second granularity, the measurement result includes a measurement result of all reference signals corresponding to each LTM candidate cell in the one or more LTM candidate cells, or a measurement result of a reference signal with the strongest signal strength in all reference signals corresponding to each LTM candidate cell, or a measurement result of a reference signal with a signal strength in the top M positions in all reference signals corresponding to each LTM candidate cell, where M and N are positive integers.

[0157] The measurement result of the first granularity can also be understood as a cell-level measurement result. The cell-level measurement result can be used to evaluate the signal quality of the entire cell. The cell can correspond to one or more reference signals, each reference signal in the one or more reference signals corresponds to a measurement result, and the cell-level measurement result can be obtained by processing the measurement results corresponding to the one or more reference signals. For example, the cell-level measurement result can be the maximum value, the average value, or the weighted average value of the one or more measurement results corresponding to the one or more reference signals, and the present application does not limit this.

[0158] Three possible designs (design one to design three) of the cell-level measurement result will be explained in detail below.

[0159] Design one: the measurement result in the above measurement result includes the measurement result of each LTM candidate cell in the one or more LTM candidate cells. The one or more LTM candidate cells can be configured by the network device. Illustratively, the one or more LTM candidate cells include LTM candidate cell 1, LTM candidate cell 2 and LTM candidate cell 3, and the terminal can report the measurement result of LTM candidate cell 1, the measurement result of LTM candidate cell 2 and the measurement result of LTM candidate cell 3. The measurement result corresponding to each LTM candidate cell can be obtained by processing the measurement result of one or more reference signals corresponding to the LTM candidate cell.

[0160] In the present application, the measurement result of each reference signal (or the signal strength of each reference signal) can be characterized by one or more of the following: RSRP, RSRQ or SINR. It can be understood that the above indexes are only examples and should not constitute any limitation on the present application. In actual application, the measurement result of the reference signal can also be characterized by other parameters, or the signal strength of the reference signal can also be characterized by other parameters.

[0161] Design two: the measurement result in the above measurement result includes the measurement result of the LTM candidate cell with the strongest signal strength in the one or more LTM candidate cells. Illustratively, the one or more LTM candidate cells include LTM candidate cell 1, LTM candidate cell 2 and LTM candidate cell 3, and the measurement result corresponding to each LTM candidate cell can be obtained by processing the measurement result of one or more reference signals corresponding to the LTM candidate cell. Assuming that the signal strength of LTM candidate cell 1 > the signal strength of LTM candidate cell 2 > the signal strength of LTM candidate cell 3, the terminal can report the measurement result of LTM candidate cell 1.

[0162] Design three: the measurement result in the above measurement result includes the measurement result of the LTM candidate cell with the signal strength in the top N positions in the one or more LTM candidate cells. Illustratively, the one or more LTM candidate cells include LTM candidate cell 1, LTM candidate cell 2 and LTM candidate cell 3, and the measurement result corresponding to each LTM candidate cell can be obtained by processing the measurement result of one or more reference signals corresponding to the LTM candidate cell. Assuming that the signal strength of LTM candidate cell 1 > the signal strength of LTM candidate cell 2 > the signal strength of LTM candidate cell 3, and N = 2, the terminal can report the measurement result of LTM candidate cell 1 and the measurement result of LTM candidate cell 2.

[0163] The value of N can be indicated by the network device or predefined, and the present application does not limit this.

[0164] The measurement result of the second granularity can also be understood as a measurement result of a beam level, and the reference signal can be replaced by a beam. When the reference signal is replaced by a beam, the signal strength of the beam can be characterized by one or more of the following: RSRP based on the reference signal transmitted by the beam, RSRQ based on the reference signal transmitted by the beam, or SINR based on the reference signal transmitted by the beam. The following will explain in detail several possible designs of the measurement result of the second granularity (design four to design six).

[0165] In design four, the measurement result includes the measurement result of all reference signals corresponding to each of the one or more LTM candidate cells, and the measurement result of each reference signal is characterized by one or more of the following: RSRP, RSRQ, or SINR.

[0166] In design five, the measurement result includes the measurement result of the reference signal with the strongest signal strength among all reference signals corresponding to each of the one or more LTM candidate cells, and the signal strength of each reference signal is characterized by one or more of the following: RSRP, RSRQ, or SINR. For example, for any LTM candidate cell (referred to as a first LTM candidate cell) of the one or more LTM candidate cells, assuming that the first LTM candidate cell corresponds to three reference signals, reference signal 1, reference signal 2, and reference signal 3, and the RSRP of reference signal 1 > the RSRP of reference signal 2 > the RSRP of reference signal 3, the measurement result includes the index of reference signal 1 and the RSRP of reference signal 1.

[0167] In design six, the measurement result includes the measurement result of the reference signal with a signal strength in the top M among all reference signals corresponding to each of the one or more LTM candidate cells. For example, for any LTM candidate cell (referred to as a first LTM candidate cell) of the one or more LTM candidate cells, assuming that the first LTM candidate cell corresponds to three reference signals, reference signal 1, reference signal 2, and reference signal 3, and the RSRP of reference signal 1 > the RSRP of reference signal 2 > the RSRP of reference signal 3, and M = 2, the measurement result includes the index of reference signal 1, the RSRP of reference signal 1, the index of reference signal 2, and the RSRP of reference signal 2.

[0168] It can be understood that the network device can configure which parameter of RSRP, RSRQ, or SINR is used to represent the measurement result of each reference signal. The value of M can be configured by the network device or predefined, and the present application does not limit this.

[0169] Optionally, when the measurement result includes the measurement result of the second granularity, the measurement result can include the following parameters: an identifier of the LTM candidate cell, an LTM measurement resource identifier, an index of the reference signal, and a signal strength of the reference signal; or the measurement result can include the following parameters: an LTM measurement identifier / reporting configuration identifier, an LTM measurement resource identifier, an index of the reference signal, and a signal strength of the reference signal.

[0170] Optionally, the network device can send first indication information, which is used to indicate that the reporting granularity of the measurement result is the first granularity or the second granularity. Correspondingly, the terminal receives the first indication information.

[0171] For example, the network device can instruct the terminal to report the measurement result of the first granularity, and the terminal can report the measurement result of each LTM candidate cell in one or more LTM candidate cells, or the measurement result of the LTM candidate cell with the maximum signal strength in one or more LTM candidate cells, or the measurement result of the LTM candidate cell with the signal strength in the top N positions in one or more LTM candidate cells. The value of N can be configured by the network device, such as the first indication information further indicating the value of N, or can be predefined.

[0172] Optionally, the terminal can further send a first bitmap, each bit in the first bitmap being used to indicate whether to report the measurement result of the corresponding LTM candidate cell. The size of the first bitmap is related to the maximum number of LTM candidate cells supported by the terminal. For example, if the maximum number of LTM candidate cells supported is 8, the first bitmap includes 8 bits, each bit corresponding to an LTM candidate cell, and each bit being used to indicate whether to report the measurement result of the corresponding LTM candidate cell.

[0173] Similarly, the terminal can further indicate whether to report the measurement result of each reference signal corresponding to a certain LTM candidate cell through another bitmap, in other words, one LTM candidate cell corresponds to one bitmap, and each bit in the bitmap is used to indicate whether to report the measurement result of the reference signal corresponding to the bit in one or more reference signals of the LTM candidate cell.

[0174] Optionally, the measurement result can further include the measurement result of the serving cell.

[0175] Design A: The measurement result further includes the measurement result of all reference signals of the serving cell.

[0176] Design B: The measurement result further includes the measurement result of the reference signal with the maximum signal strength in all reference signals of the serving cell.

[0177] Design C: the measurement result in the above measurement result further includes measurement results of reference signals whose channel strengths are in the top Q among all reference signals of the serving cell. Q is a positive integer.

[0178] Design D: the measurement result in the above measurement result further includes measurement results of the serving cell. The measurement results of the serving cell can be obtained by processing measurement results of one or more reference signals corresponding to the serving cell. The processing manner can refer to the processing manner of the measurement results of the LTM candidate cell, which will not be described herein.

[0179] It can be understood that the measurement result can only include the measurement results of the serving cell, which is not limited in the present application.

[0180] Optionally, the network device can configure the reporting granularity of the measurement result corresponding to each LTM measurement identifier.

[0181] For example, the network device configures the reporting granularity of the measurement result corresponding to the LTM measurement identifier 1 as the first granularity, the reporting granularity of the measurement result corresponding to the LTM measurement identifier 2 as the second granularity, and the reporting granularity of the measurement result corresponding to the LTM measurement identifier 3 as the first granularity.

[0182] Optionally, the terminal can further send a second bit map. Each bit in the second bit map is used to indicate whether to report the measurement result of the corresponding LTM measurement identifier. The size of the second bit map is related to the number of the maximum supported LTM measurement identifier of the terminal. For example, if the number of the maximum supported LTM measurement identifier is 8, the second bit map includes 8 bits, each bit corresponds to an LTM measurement identifier, and each bit is used to indicate whether to report the measurement result of the corresponding LTM measurement identifier.

[0183] The measurement result corresponding to the LTM measurement identifier can be understood as the measurement result obtained by the terminal based on the LTM measurement resource in the LTM measurement resource configuration.

[0184] In step 730, the measurement result is reported by the MAC CE or the UCI when the trigger event is met.

[0185] One possible design is that the terminal periodically reports the measurement result by the MAC CE or the UCI when the trigger event is met. For example, the trigger event is that the signal quality of the serving cell is greater than or equal to the first preset threshold. When the signal quality of the serving cell is greater than or equal to the first preset threshold, the terminal can periodically report the measurement result by the MAC CE or the UCI, such as reporting the measurement result of the serving cell.

[0186] Another possible design is that the terminal reports the measurement result through a MAC CE or UCI once the triggering event is met. Exemplarily, the triggering event is that the signal quality of the serving cell is greater than or equal to a first preset threshold, and the terminal can report the measurement result through the MAC CE or UCI once the signal quality of the serving cell is greater than or equal to the first preset threshold. If

[0187] Optionally, the configuration information is further used for configuring a scheduling request identifier, the scheduling request identifier being used for indicating a scheduling request, the scheduling request being used for requesting a scheduling resource from the network device.

[0188] A possible design is that when the triggering event is met and the terminal has no resource to report the measurement result, the terminal sends a scheduling request based on the scheduling request identifier, the scheduling request being used for requesting a scheduling resource. Correspondingly, the network device receives the scheduling request.

[0189] Another possible design is that when the triggering event is met, the terminal directly sends a scheduling request based on the scheduling request identifier, that is, the terminal sends the scheduling request regardless of whether there is resource to report the measurement result.

[0190] Regarding the scheduling request identifier, a possible implementation is that the scheduling request identifier is included in the reporting configuration.

[0191] Another possible implementation is that the scheduling request identifier is included in the LTM measurement identifier configuration, and the configuration information includes the LTM measurement identifier configuration.

[0192] Yet another possible implementation is that the scheduling request identifier is associated with a first identifier, the first identifier including one or more of the following: a reporting configuration identifier, an LTM candidate cell identifier, an LTM measurement identifier, or an LTM measurement resource identifier; and the method further includes that the terminal determines the scheduling request identifier according to the first identifier and the association relationship between the scheduling request identifier and the first identifier. Exemplarily, the network device can configure an association relationship between multiple scheduling request identifiers and multiple reporting configuration identifiers, and the terminal can determine the scheduling request identifier corresponding to the reporting configuration identifier according to the reporting configuration identifier indicated by the network device.

[0193] Optionally, the scheduling request is cancelled when one or more of the following conditions is met: a DCI is received, the DCI being used for requesting to activate semi-persistent CSI reporting; a first MAC CE is received, the first MAC CE being used for requesting to activate semi-persistent CSI reporting; or the measurement result is reported through the MAC CE or UCI.

[0194] The scheduling request can be periodic, in other words, the terminal can periodically send the scheduling request. The cancellation of the scheduling request can be understood as that the terminal no longer sends the scheduling request. For example, after the terminal receives the DCI for activating the semi-persistent CSI reporting, the terminal can no longer send the scheduling request. It can be understood that when the DCI is used to activate the semi-persistent CSI reporting, the terminal has obtained the resource for reporting the measurement result, and no longer needs to send the scheduling request.

[0195] In this application, the CSI reporting can be regarded as a possible implementation of the UCI reporting, or in other words, the CSI reporting is part of the UCI reporting, and the CSI is usually transmitted through the PUCCH or the PUSCH. The UCI reporting can be transmitted through the PUCCH or the PUSCH. The UCI includes but is not limited to the CSI, the scheduling request, the hybrid automatic repeat request acknowledgement, etc. When the terminal needs to report the CSI, the CSI information can be encapsulated in the UCI and transmitted to the network device through the PUCCH or the PUSCH.

[0196] Optionally, the configuration information is further used to configure a maximum number of reporting; and the sending of the measurement result through the MAC CE or the UCI when the trigger event is met includes: when the trigger event is met and the number of reporting is less than or equal to the maximum number, the measurement result is sent through the MAC CE or the UCI.

[0197] It can be understood that the UCI can be transmitted on the PUCCH or the PUSCH, and the MAC CE can be transmitted on the PUSCH, so the number of reporting can be understood as the number of PUCCH transmission or the number of PUSCH transmission.

[0198] A possible implementation is to reserve a counter at the MAC layer or the physical layer, which is used to record the number of PUCCH or PUSCH transmission, and if the configured maximum number is reached, the reporting of the measurement result is stopped.

[0199] The above provides a detailed description of the method provided by the embodiments of the present application in combination with the drawings. The following provides a detailed description of the apparatus provided by the embodiments of the present application in combination with the drawings.

[0200] FIG. 10 is a schematic block diagram of a communication apparatus 1000 provided by an embodiment of the present application.

[0201] As shown in FIG. 10, the communication apparatus 1000 includes a processing module 1010 and a transceiver module 1020.

[0202] The transceiver module 1020 can implement corresponding communication functions. The transceiver module 1020 can also be referred to as an input / output interface or a communication unit. The processing module 1010 can be configured to perform processing operations. It should be understood that if the apparatus 1000 is a component (for example, a chip) configured in a network device or a terminal, the transceiver module 1020 can be an input / output interface.

[0203] Optionally, the transceiver module 1020 can include a sending module and a receiving module. The sending module is configured to perform the sending operations of the network device or the terminal in FIG. 7. The receiving module is configured to perform the receiving operations of the network device or the terminal in FIG. 7.

[0204] It should be understood that if the apparatus 1000 is a component (for example, a chip) configured in a network device or a terminal, the sending module can be an output interface, and the sending operations involved in the embodiments of the present application can be performed by the output interface. The receiving module can be an input interface, and the receiving operations involved in the embodiments of the present application can be performed by the input interface.

[0205] Optionally, the apparatus 1000 can further include a storage module, which can be configured to store instructions and / or data. The processing module 1010 can read the instructions and / or data in the storage module, so that the apparatus implements the method embodiments shown in the foregoing FIG. 7.

[0206] In a possible design, the apparatus 1000 can be configured to implement functions of the terminal in the method embodiments shown in FIG. 7, or the apparatus 1000 can include a unit for implementing any function or operation of the terminal in the method embodiments shown in FIG. 7. The unit can be implemented by software, hardware, firmware, or any combination thereof, in whole or in part.

[0207] When the apparatus 1000 is configured to implement the functions of the terminal in the method embodiments shown in FIG. 7, the transceiver module 1020 (specifically, the receiving module) can be configured to perform step 710, receiving configuration information, the configuration information being used to configure a measurement resource and a triggering event of an LTM candidate cell; the processing module 1010 can be configured to perform step 720 in FIG. 7, performing measurement based on the measurement resource to obtain a measurement result; and the transceiver module 1020 (specifically, the sending module) can be configured to perform step 730 in FIG. 7, sending the measurement result through a MAC CE or UCI when the triggering event is met.

[0208] Optionally, the processing module 1010 is further configured to cancel the scheduling request when any of the following conditions is met: receiving DCI used to activate semi-persistent CSI reporting; receiving a first MAC CE used to activate semi-persistent CSI reporting; or after the measurement result is reported through the MAC CE or the CSI.

[0209] Optionally, the transceiver 1020 is further configured to receive first indication information, where the first indication information is used to indicate that the reporting granularity of the measurement result is the first granularity or the second granularity.

[0210] Optionally, the configuration information is further used to configure a maximum number of reporting times; and the transceiver 1020 is specifically configured to send the measurement result through the MAC CE or the UCI in a case where a triggering event is met and the number of reporting times is less than or equal to the maximum number of reporting times.

[0211] In another possible design, the apparatus 1000 can be configured to implement the functions of the network device in the method embodiments shown in FIG. 7, or the apparatus 1000 can include units for implementing any function or operation of the network device in the method embodiments shown in FIG. 7, and the units can be implemented by software, hardware, firmware, or any combination thereof, in whole or in part.

[0212] When the apparatus 1000 is configured to implement the functions of the network device in the method embodiments shown in FIG. 7, the transceiver 1020 (specifically, a sending module) can be configured to perform step 710 in FIG. 7, and send configuration information, where the configuration information is used to configure measurement resources of an LTM candidate cell and a triggering event, and the triggering event is used to trigger a terminal to report a measurement result; and the transceiver 1020 (specifically, a receiving module) can be further configured to perform step 730, and receive the measurement result, where the measurement result is carried in the MAC CE or the UCI, and the measurement result is obtained based on the measurement resources.

[0213] Optionally, the transceiver 1020 is further configured to send first indication information, where the first indication information is used to indicate that the reporting granularity of the measurement result is the first granularity or the second granularity.

[0214] Optionally, the reporting mode of the measurement result includes reporting the measurement result through the MAC CE or reporting the measurement result through the UCI; the configuration information is further used to configure the reporting mode; or the reporting mode is determined according to a preset rule.

[0215] Optionally, the configuration information includes an LTM measurement identifier, where the LTM measurement identifier is associated with an LTM measurement resource configuration identifier, a reporting configuration identifier, or an LTM candidate cell identifier.

[0216] Optionally, the configuration information includes an LTM measurement identifier, where the LTM measurement identifier is associated with an MO, and the MO includes an LTM candidate cell.

[0217] Optionally, the configuration information comprises a reporting configuration, and the reporting configuration is included in a cell group configuration; wherein the cell group configuration comprises an LTM measurement identifier, and the LTM measurement identifier is associated with a reporting configuration identifier and an LTM measurement resource configuration identifier; or the cell group configuration comprises a reporting configuration identifier, and the reporting configuration identifier is associated with an LTM measurement resource configuration identifier.

[0218] Optionally, the configuration information is further used for configuring a scheduling request identifier, and the scheduling request identifier is used for indicating a scheduling request, and the scheduling request is used for requesting a scheduling resource from the network device.

[0219] Optionally, the scheduling request identifier is included in the reporting configuration, and the configuration information comprises the reporting configuration; or the scheduling request identifier is included in the LTM measurement identifier configuration, and the configuration information comprises the LTM measurement identifier configuration.

[0220] Optionally, the scheduling request identifier is associated with a first identifier, and the first identifier comprises one or more of the following: a reporting configuration identifier, an LTM candidate cell identifier, an LTM measurement identifier, or an LTM measurement resource configuration identifier.

[0221] Optionally, the reporting granularity of the measurement result comprises a first granularity or a second granularity, wherein when the reporting granularity is the first granularity, the measurement result comprises a measurement result of each LTM candidate cell in one or more LTM candidate cells, or a measurement result of an LTM candidate cell with the strongest signal strength in the one or more LTM candidate cells, or a measurement result of LTM candidate cells with the strongest signal strength in the one or more LTM candidate cells; when the reporting granularity is the second granularity, the measurement result comprises a measurement result of all reference signals corresponding to each LTM candidate cell in the one or more LTM candidate cells, or a measurement result of a reference signal with the strongest signal strength in all reference signals corresponding to each LTM candidate cell, or a measurement result of reference signals with the strongest signal strength in all reference signals corresponding to each LTM candidate cell, wherein M and N are positive integers.

[0222] Optionally, when the first indication information indicates that the reporting granularity is the first granularity, the first indication information is further used for indicating a value of N; or when the first indication information indicates that the reporting granularity is the second granularity, the first indication information is further used for indicating a value of M.

[0223] For more detailed descriptions of the processing module 1010 and the transceiver module 1020, refer to the related descriptions in the method embodiment shown in FIG. 7.

[0224] It should be noted that the transceiver module can also be referred to as a transceiver unit, a transceiver, a transceiver device, or the like. The processing module can also be referred to as a processor, a processing board, a processing unit, or a processing device, or the like. Alternatively, the transceiver module can be used to perform the sending operation and the receiving operation of the terminal device or the network device in the above method, and the device in the communication module used to implement the receiving function can be regarded as a receiving module, and the device in the communication module used to implement the sending function can be regarded as a sending module, that is, the transceiver module includes the receiving module and the sending module.

[0225] In addition, in a possible design, the foregoing transceiver module and / or processing module can be implemented by a virtual module, for example, the processing module can be implemented by a software function module or a virtual device, and the transceiver module can be implemented by a software function module or a virtual device. In another possible design, the processing module or the transceiver module can also be implemented by an entity device, for example, if the device is implemented by a chip / chip circuit, the transceiver module can be an input output circuit and / or a communication interface, and performs an input operation (corresponding to the foregoing receiving operation) and an output operation (corresponding to the foregoing sending operation); and the processing module is an integrated processor or a microprocessor or an integrated circuit.

[0226] It should be understood that the division of the modules in the embodiments of the present application is illustrative, and is merely a logical function division, and another division manner can be used in actual implementation. In addition, each function module in each embodiment of the present application can be integrated in one processor, or can be physically separated, or two or more modules can be integrated in one module. The integrated module can be implemented in the form of hardware or in the form of a software function module.

[0227] FIG. 11 is another schematic block diagram of a communication device 1100 provided by an embodiment of the present application. The device 1100 can be a chip system, or can also be a device configured with a chip system, for implementing the method embodiments. In the embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices.

[0228] As shown in FIG. 11, the device 1100 can include a processor 1110, which can be used to execute a computer program or instruction in a memory, to implement the steps performed by a terminal or the steps performed by a network device in the method embodiments shown in FIG. 7.

[0229] Optionally, the apparatus 1100 further includes a communication interface 1120. The communication interface 1120 can be configured to communicate with other devices through a transmission medium, thereby enabling the apparatus 1100 to communicate with other devices. The communication interface 1120 can be, for example, a transceiver, an interface, a bus, a circuit, or a combination of devices that enable the transmission and reception of data. The processor 1110 can input and output data via the communication interface 1120, and can be configured to implement the measurement reporting method described in the embodiment shown in FIG. 7. Specifically, the apparatus 1100 can be configured to implement the functions of the network device or terminal in the method embodiments described above.

[0230] When the apparatus 1100 is configured to implement the method shown in FIG. 7, the processor 1110 can be configured to implement the functions of the processing module 1010 described above, for example, to perform step 720 in FIG. 7, and the communication interface 1120 can be configured to implement the functions of the transceiver module 1020 described above, for example, to perform step 710 and step 730 in FIG. 7.

[0231] Optionally, the apparatus 1100 further includes at least one memory 1130 configured to store program instructions and / or data. The memory 1130 is coupled to the processor 1110. In the embodiments of the present application, the coupling between the apparatuses, units or modules can be indirect coupling or communication connection between the apparatuses, units or modules, which can be electrical, mechanical or other forms, and is used for information interaction between the apparatuses, units or modules. The processor 1110 can operate in cooperation with the memory 1130. The processor 1110 can execute program instructions stored in the memory 1130. At least one of the at least one memory can be included in the processor.

[0232] It should be understood that the coupling in the embodiments of the present application is indirect coupling or communication connection between the apparatuses, units or modules, which can be electrical, mechanical or other forms, and is used for information interaction between the apparatuses, units or modules. The processor 1110 can operate in cooperation with the memory 1130. The specific connection medium between the processor 1110, the communication interface 1120 and the memory 1130 is not limited in the embodiments of the present application. In FIG. 11, the processor 1110, the communication interface 1120 and the memory 1130 are connected through a bus 1140. The connection mode between the other components in FIG. 11 is only schematically illustrated, and is not limited thereto. The bus can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For convenience of representation, only one thick line is used to represent the bus in FIG. 11, but it does not mean that there is only one bus or only one type of bus.

[0233] It should be noted that when the communication device 1100 is a terminal or a network device, the communication interface 1120 can be a transceiver, which can specifically include a transmitter and a receiver, the transmitter is used to send signals, and the receiver is used to receive signals. When the communication device 1100 is a chip applied to a terminal or a network device, the communication interface 1120 can be an input-output circuit, a bus, a module, a pin or other types of communication interfaces input-output circuits, wherein the input circuit in the input-output circuit can be used for receiving, and the output interface can be used for transmitting.

[0234] FIG. 12 is a schematic diagram of an O-RAN system provided by an embodiment of the present application. The O-RAN system can also include other components in addition to the components shown in FIG. 12.

[0235] As shown in FIG. 12, the network device in the embodiment of the present application can also be referred to as an access network device. The access network device (i.e., RAN, which can be an eNB or a gNB or a next-generation access network device) can communicate with a core network (CN) through a backhaul link and communicate with a terminal through an air interface.

[0236] Specifically, the BBU in the access network device communicates with the core network device through the backhaul link; the radio unit (RU) in the access network device communicates with at least one terminal through the air interface. The BBU communicates with at least one RU through a front-haul link, and the BBU and the RU can be co-located or not co-located.

[0237] The BBU includes at least one CU and at least one DU, which can communicate through at least one midhaul link.

[0238] FIG. 13 is a network element function division and protocol layer structure diagram of an O-RAN device provided by an embodiment of the present application.

[0239] In some examples, the CU is a logical node that carries the RRC layer, the SDAP layer, the PDCP layer and other control functions of the access network device. The CU is connected to network nodes such as core network devices through some interfaces, which can be E2 interfaces and the like. Optionally, the CU can have part of the functions of the core network device. The CU (such as the PDCP layer and higher layers) is connected to the DU (such as the RLC layer and lower layers) through some interfaces, which can be F1 interfaces and the like. In some examples, these interfaces (such as the F1 interface) can provide CP and UP functions, such as interface management, system information management, UE context management, and RRC message transmission. The F1AP is an application protocol of the F1 interface, which defines the signaling process of the F1 in some examples. The F1 interface supports the control plane F1-C and the user plane F1-U.

[0240] In some examples, a CU can be split into a CU-CP (control unit-control plane) and a CU-UP (control unit-user plane), where the CU-CP is a logical node carrying RRC layer and PDCP-C (control plane part of PDCP) layer, used to implement the control plane function of the CU. The CU-CP can interact with a network element in the core network for implementing the control plane function. The network element in the core network for implementing the control plane function can be an access and mobility function network element, such as an AMF in a 5G system. The AMF network element is used to be responsible for mobility management in a mobile network, such as location update of a terminal, registration network of a terminal, handover of a terminal, etc. The CU-UP is a logical node carrying SDAP layer and PDCP-U (user plane part of PDCP) layer, used to implement the user plane function of the CU. The CU-UP can interact with a network element in the core network for implementing the user plane function. The network element in the core network for implementing the user plane function, for example, a UPF in a 5G system, is used to be responsible for forwarding and receiving data in a terminal. The above configuration of CU and DU is only an example, and the CU and DU can also be configured to have other functions according to needs. For example, the CU or the DU can be configured to have more protocol layer functions, or the CU or the DU can be configured to have partial processing functions of the protocol layer. For example, partial functions of the RLC layer and functions of the protocol layer above the RLC layer are arranged in the CU, and the remaining functions of the RLC layer and functions of the protocol layer below the RLC layer are arranged in the DU. For another example, the functions of the CU or the DU can be divided according to service types or other system requirements, for example, according to delay, functions that need to meet a relatively short delay requirement are arranged in the DU, and functions that do not need to meet the delay requirement are arranged in the CU.

[0241] In some examples, the DU is a logical node carrying an RLC layer, a MAC layer, a higher physical layer (higher PHY), and other functions. In some examples, the DU can control at least one RU. The DU is connected to the RU through some interfaces, which can be a front-haul interface. In some examples, the higher PHY layer includes part of the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.

[0242] In some examples, an RU is a logical node that hosts lower physical layer (lower PHY) and radio frequency (RF) processing, which can also be referred to as RF chain. In some examples, an RU can be a TRP or a remote radio head (RRH) or other similar functional entity. In some examples, a low-PHY includes portions of PHY processing such as fast Fourier transform (FFT), inverse fast fourier transformation (IFFT), digital beamforming and filtering, etc. An RU communicates with one or more UEs over a wireless link.

[0243] A DU and an RU can or can not be co-located. A DU and an RU exchange control plane information and user plane information over a fronthaul link via a lower-layer split-control, user and synchronization (LLS-CUS) interface. The LLS-CUS can include a LLS-C interface and a LLS-U interface that provide control plane (C-plane) and user plane (U-plane), respectively. In some examples, the control plane refers to real-time control between a DU and an RU. A DU and an RU have a LLS-M interface of the fronthaul link to exchange management information, and the management plane (M-plane) refers to non-real-time management operations between the DU and the RU.

[0244] A DU and an RU can cooperate to collectively implement the functionality of a PHY layer. One DU can be connected to one or more RUs. The functionality that a DU and an RU have can be configured in multiple ways according to design. For example, a DU is configured to implement baseband functionality and an RU is configured to implement mid- RF functionality. As another example, a DU is configured to implement high-layer functionality in a PHY layer and an RU is configured to implement low-layer functionality in the PHY layer or to implement the low-layer functionality and RF functionality. The high-layer functionality in the PHY layer can include a portion of functionality of the PHY layer that is closer to the MAC layer, and the low-layer functionality in the PHY layer can include another portion of functionality of the PHY layer that is closer to the mid-RF side.

[0245] The CU (or CU-CP and CU-UP), DU or RU can also have different names in different systems, but those skilled in the art can understand their meanings. For example, in an ORAN system, the CU can also be referred to as an open CU (O-CU), the DU can also be referred to as an open DU (O-DU), the CU-CP can also be referred to as an open CU-CP (O-CU-CP), the CU-UP can also be referred to as an open CU-UP (O-CU-UP), and the RU can also be referred to as an open RU (O-RU). For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in the present application. Any one of the CU (or CU-CP, CU-UP), DU and RU in the present application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0246] Exemplarily, in the present application, the specific implementation of step 710 can be that the DU corresponding to the network device sends the configuration information through the RU. In an O-RAN system, the specific implementation of step 710 can be that the O-DU corresponding to the network device sends the above-mentioned configuration information through the O-RU.

[0247] The specific implementation of step 730 can be that the DU corresponding to the network device receives the measurement result through the RU. In an O-RAN system, the specific implementation of step 730 can be that the O-DU corresponding to the network device receives the above-mentioned measurement result through the O-RU.

[0248] The present application also provides a computer program product, which includes a computer program (also can be referred to as code or instruction), when the computer program is run, the method described in the embodiment shown in FIG. 7 can be implemented.

[0249] The present application also provides a computer readable storage medium, which stores a computer program (also can be referred to as code or instruction). When the computer program is run, the method described in the embodiment shown in FIG. 7 can be implemented.

[0250] The present application embodiment provides a communication system, which includes the terminal and the network device as described above.

[0251] It should be understood that the processor in the embodiments of the present application can be an integrated circuit chip with a processing capability of signals. In the implementation process, each step of the method embodiments described above can be completed by the integrated logic circuit of hardware or the instruction in the form of software in the processor. The processor described above 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, a discrete gate or transistor logic device, a discrete hardware component. Each method, step and logic block diagram 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 conjunction with the embodiments of the present application can be directly embodied as a hardware code processor for execution, or can be executed by a combination of hardware and software modules in the code processor. The software module can be located in a random memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register or other mature storage medium in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and combines the hardware to complete the steps of the above method.

[0252] It should also be understood that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, and not limitation, many forms of RAM can be used, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the system and method described herein is intended to include, but not be limited to, these and any other suitable types of memory.

[0253] The terms "unit", "module" and the like used in the specification can be used to represent a computer-related entity, 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.

[0254] Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and steps described in connection with the embodiments disclosed herein can be implemented as electronic hardware, computer software, or combinations of both. The choice of hardware or software, or combinations of both, would be dependent on the specific application and design constraints imposed on the overall system. Skilled artisans can implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application. In several embodiments provided in the present application, it will be apparent that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the described device embodiments are merely illustrative, and the division into units is merely a logical function division, and actual implementation can have another division, for example, multiple units or components can be combined or integrated into another system, or some features can be omitted or not implemented. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0255] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place or can be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0256] In addition, the functional units in each of the embodiments of the present application can be integrated into one processing unit, or each unit can be physically present separately, or two or more units can be integrated into one unit.

[0257] In the above embodiments, the functions of the various functional units can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, the software 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 processes or functions described in the embodiments of the present application are wholly or partially generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another, for example, the computer instructions can be transferred from one website, computer, server or data center to another via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be magnetic media (for example, floppy disk, hard disk, magnetic tape), optical media (for example, digital video disc (DVD)), or semiconductor media (for example, solid state disk (SSD)) and the like.

[0258] The functions, if implemented in the form of software functional units and sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the parts that make a contribution to the technology or parts of the technical solutions can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and various media that can store program codes.

[0259] 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 can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A measurement reporting method, characterized in that, The method comprises: receiving configuration information, the configuration information being used for configuring measurement resources and triggering events of a layer 1 and / or layer 2 triggered mobility (LTM) candidate cell; performing measurement based on the measurement resources to obtain measurement results; in a case where the triggering events are met, sending the measurement results through a medium access control-control element (MAC CE) or uplink control information (UCI).

2. The method of claim 1, wherein, The reporting mode of the measurement results comprises reporting the measurement results through the MAC CE or reporting the measurement results through the UCI; the configuration information is further used for configuring the reporting mode; or The reporting mode is determined according to a preset rule.

3. The method of claim 1 or 2, wherein, The configuration information comprises an LTM measurement identifier, the LTM measurement identifier being associated with an LTM measurement resource configuration identifier, a reporting configuration identifier or an LTM candidate cell identifier.

4. The method of claim 1 or 2, wherein, The configuration information comprises an LTM measurement identifier, the LTM measurement identifier being associated with a measurement object (MO), and the MO comprises an LTM candidate cell.

5. The method of any one of claims 1 to 3, wherein, The configuration information comprises a reporting configuration, and the reporting configuration is included in a cell group configuration; wherein The cell group configuration comprises an LTM measurement identifier, the LTM measurement identifier being associated with a reporting configuration identifier and an LTM measurement resource configuration identifier; or The cell group configuration comprises a reporting configuration identifier, the reporting configuration identifier being associated with an LTM measurement resource configuration identifier.

6. The method of any one of claims 1 to 5, wherein, The configuration information is further used for configuring a scheduling request identifier, the scheduling request identifier being used for indicating a scheduling request, and the scheduling request is used for requesting scheduling resources from a network device.

7. The method of claim 6, wherein, The scheduling request identifier is included in a reporting configuration, and the configuration information comprises the reporting configuration; or The scheduling request identifier is included in an LTM measurement identifier configuration, and the configuration information comprises the LTM measurement identifier configuration.

8. The method of any one of claims 1 to 5, wherein, A scheduling request identifier is associated with a first identifier, the first identifier comprising one or more of a reporting configuration identifier, an LTM candidate cell identifier, an LTM measurement identifier or an LTM measurement resource configuration identifier, and the scheduling request identifier is used for indicating a scheduling request, and the scheduling request is used for requesting scheduling resources from a network device.

9. The method of any one of claims 6 to 8, wherein, When any of the following conditions is met, the scheduling request is cancelled: a downlink control information (DCI) is received, the DCI being used for activating semi-persistent channel state information (CSI) reporting; a first MAC CE is received, the first MAC CE being used for activating semi-persistent channel state information (CSI) reporting; or after the measurement results are reported through a MAC CE or CSI. The reporting granularity of the measurement results comprises a first granularity or a second granularity, wherein 10. The method of any one of claims 1 to 9, wherein, when the reporting granularity is the first granularity, the measurement results comprise measurement results of each of one or more LTM candidate cells, or measurement results of an LTM candidate cell with the strongest signal strength in the one or more LTM candidate cells, or measurement results of LTM candidate cells with signal strengths in the top N positions in the one or more LTM candidate cells. ​ When the reporting granularity is the second granularity, the measurement result includes a measurement result of all reference signals corresponding to each LTM candidate cell in the one or more LTM candidate cells, or a measurement result of a reference signal with the strongest signal strength among all reference signals corresponding to each LTM candidate cell, or a measurement result of reference signals with the strongest signal strength among the first M reference signals among all reference signals corresponding to each LTM candidate cell, where M and N are positive integers.

11. The method of claim 10, wherein, The method further includes: receiving first indication information, the first indication information being used to indicate that the reporting granularity of the measurement result is the first granularity or the second granularity.

12. The method of claim 11, wherein, When the first indication information indicates that the reporting granularity is the first granularity, the first indication information is further used to indicate the value of N; or, when the first indication information indicates that the reporting granularity is the second granularity, the first indication information is further used to indicate the value of M.

13. The method of any one of claims 1 to 12, wherein, The configuration information is further used to configure a maximum number of reporting times; and the sending, by the MAC CE or the UCI, of the measurement result in the case where the trigger event is met, includes: sending, by the MAC CE or the UCI, the measurement result in the case where the trigger event is met and the number of reporting times is less than or equal to the maximum number of reporting times.

14. A measurement reporting method, characterized by, includes: sending configuration information, the configuration information being used to configure measurement resources and trigger events of a layer 1 and / or layer 2 triggered mobility (LTM) candidate cell, the trigger events being used to trigger a terminal to report a measurement result; receiving a measurement result, the measurement result being carried in a medium access control-control element (MAC CE) or uplink control information (UCI), the measurement result being obtained based on measurement of the measurement resources.

15. The method of claim 14, wherein, A reporting mode of the measurement result includes reporting the measurement result by the MAC CE or reporting the measurement result by the UCI; and the configuration information is further used to configure the reporting mode.

16. The method of claim 14 or 15, wherein, The configuration information includes an LTM measurement identifier, the LTM measurement identifier being associated with an LTM measurement resource configuration identifier, a reporting configuration identifier, or an LTM candidate cell identifier.

17. The method of claim 14 or 15, wherein, The configuration information includes an LTM measurement identifier, the LTM measurement identifier being associated with a measurement object (MO), and the MO includes an LTM candidate cell.

18. The method of any one of claims 14 to 16, wherein, The configuration information includes a reporting configuration, and the reporting configuration is included in a cell group configuration; wherein The cell group configuration includes an LTM measurement identifier, the LTM measurement identifier being associated with a reporting configuration identifier and an LTM measurement resource configuration identifier; or The cell group configuration includes a reporting configuration identifier, the reporting configuration identifier being associated with an LTM measurement resource configuration identifier.

19. The method of any one of claims 14 to 18, wherein, The configuration information is further used to configure a scheduling request identifier, the scheduling request identifier being used to indicate a scheduling request, and the scheduling request is used to request scheduling resources.

20. The method of claim 19, wherein, The scheduling request identifier is included in a reporting configuration, and the configuration information includes the reporting configuration; or The scheduling request identifier is included in an LTM measurement identifier configuration, and the configuration information includes the LTM measurement identifier configuration.

21. The method of any one of claims 14 to 18, wherein, The scheduling request identifier is associated with a first identifier, and the first identifier comprises one or more of a reporting configuration identifier, an LTM candidate cell identifier, an LTM measurement identifier, or an LTM measurement resource configuration identifier, and the scheduling request identifier is used to indicate a scheduling request, and the scheduling request is used to request a scheduling resource.

22. The method of any one of claims 14 to 21, wherein, The reporting granularity of the measurement result comprises a first granularity or a second granularity, wherein, When the reporting granularity is the first granularity, the measurement result comprises a measurement result of each LTM candidate cell in one or more LTM candidate cells, or a measurement result of an LTM candidate cell with the strongest signal strength in the one or more LTM candidate cells, or a measurement result of an LTM candidate cell with the strongest signal strength in the one or more LTM candidate cells. When the reporting granularity is the second granularity, the measurement result comprises a measurement result of all reference signals corresponding to each LTM candidate cell in the one or more LTM candidate cells, or a measurement result of a reference signal with the strongest signal strength in all reference signals corresponding to each LTM candidate cell, or a measurement result of a reference signal with the strongest signal strength in all reference signals corresponding to each LTM candidate cell.

23. The method of claim 22, wherein, The method further comprises: sending first indication information, wherein the first indication information is used to indicate that the reporting granularity of the measurement result is the first granularity or the second granularity.

24. The method of claim 23, wherein, When the first indication information indicates that the reporting granularity is the first granularity, the first indication information is further used to indicate the value of N; or, when the first indication information indicates that the reporting granularity is the second granularity, the first indication information is further used to indicate the value of M.

25. The method of any one of claims 14 to 24, wherein, The configuration information is further used to configure the maximum number of reports.

26. A communications device, characterized by The apparatus comprises a module for implementing the method of any one of claims 1 to 13, or a module for implementing the method of any one of claims 14 to 25.

27. A communications device, characterized by The apparatus comprises a processor and a memory, wherein, The memory is used to store a computer program; The processor is used to invoke the computer program, so that the apparatus implements the method of any one of claims 1 to 13, or implements the method of any one of claims 14 to 25.

28. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions, and when the computer program or instructions are executed by a computer, the method of any one of claims 1 to 13 is implemented, or the method of any one of claims 14 to 25 is implemented.

29. A computer program product, characterised in that, The computer program product comprises instructions, and when the instructions are executed by a computer, the method of any one of claims 1 to 13 is implemented, or the method of any one of claims 14 to 25 is implemented.

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