Communication method, communication apparatus and communication system

Abstract

Provided in the embodiments of the present application are a communication method, a communication apparatus, and a communication system. The apparatus comprises a first processing unit, the first processing unit controlling a terminal device to execute the following operations: the terminal device performs event evaluation on the basis of a beam of a serving cell and / or a beam of a candidate cell; and, when event-based layer 1 measurement reporting is triggered, the terminal device sends a measurement report to a network device, the measurement report comprising a layer 1 measurement result of the candidate cell, wherein the beam of the serving cell and / or the beam of the candidate cell is configured by the network device and / or obtained by the terminal device from a transmission configuration indicator state (TCI state).

Description

Communication method, communication device, and communication system TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of communication technology. BACKGROUND

[0002] Network-controlled mobility applies to connected-state terminals and can be divided into two types of mobility: cell-level mobility and beam-level mobility. Among them, cell-level mobility can be based on layer 3 or based on layer 1 / 2.

[0003] Layer 3 mobility based on layer 3 measurement reporting supports events evaluated by user equipment (UE, User Equipment) to trigger measurement reporting, which reduces signaling overhead compared to periodic measurement reporting. Layer 3 mobility has developed several releases, and conditional handover (CHO, Conditional handover) and other conditional mobility procedures (CPAC, SCPAC) have been developed to ensure that the procedure does not need to perform signaling interaction with the source cell in advance to achieve high robustness.

[0004] Layer 1 / layer 2 mobility (LTM, L1 / 2Triggered Mobility) can provide enhanced handover latency and interruption time. However, LTM robustness is not as good as layer 3 mobility procedures, and LTM also has some limitations. For example, LTM operation only supports mobility between cells of the same network device (such as gNB) or the same center unit (CU, Center Unit). According to the deployment scenario of the network, this greatly limits the opportunity to use LTM. By ensuring LTM operation between cells of different gNBs (i.e., inter-CU), the network will enable many more times of handover to benefit from LTM.

[0005] Layer 1 / layer 2 mobility (LTM, L1 / 2Triggered Mobility) procedures limit measurements to synchronization signal and physical broadcast channel block (SSB, Synchronization Signal and PBCH block) measurements. Extending L1 measurements to include channel state information reference signals (CSI-RS, Channel State Information Reference Signal) can address this limitation and is expected to enable greater throughput on the target cell immediately after cell handover.

[0006] It should be noted that the above introduction of the technical background is only for the convenience of clearly and completely describing the technical scheme of the present application and facilitating the understanding of those skilled in the art. The above technical scheme cannot be considered as known to those skilled in the art only because it is described in the technical background part of the present application.

[0007] SUMMARY

[0008] Currently, for event triggered layer 1 measurement reporting, the following LTM events based on serving cell and / or candidate cell beam specific quality are supported as L1 LTM measurement events: Event LTM2: serving cell beam becomes worse than an absolute threshold; Event LTM3: candidate cell beam becomes better than serving cell beam by an offset; Event LTM4: candidate cell beam becomes better than an absolute threshold; Event LTM5: serving cell beam becomes worse than a first absolute threshold and candidate cell beam becomes better than a second absolute threshold.

[0009] The inventors of the present application find that, in the LTM events based on serving cell beam and / or candidate cell beam supported by the current layer 1 measurement reporting of LTM mobility, the serving cell beam and the candidate cell beam used for event evaluation are not determined, and there may be a misunderstanding between the terminal device and the network device for event evaluation, so that the network cannot configure the event according to its own needs, resulting in unnecessary layer 1 measurement reporting triggered by the event, and further resulting in resource waste, or resulting in that the layer 1 measurement reporting is not triggered in time based on the event, and further possibly causing problems such as too late handover or radio link failure, so that the system throughput is reduced and the user experience is poor.

[0010] In order to solve at least one of the above problems or other similar problems, embodiments of the present application provide a communication method, a communication device and a communication system.

[0011] According to an aspect of an embodiment of the present application, a communication device is provided, which is applied to a terminal device, and the device comprises a first processing unit, which controls the terminal device to perform the following operations:

[0012] The terminal device performs event evaluation based on a serving cell beam and / or a candidate cell beam; and

[0013] When the layer 1 measurement reporting based on the event is triggered, the terminal device sends a measurement report to a network device, and the measurement report comprises a layer 1 measurement result of the candidate cell;

[0014] The beam of the serving cell and / or the beam of the candidate cell are configured by the network device and / or obtained by the terminal device from a transmission configuration indication (TCI) state.

[0015] According to another aspect of the embodiments of the present application, a communication apparatus is provided, which is applied to a network device, and the apparatus comprises a second processing unit, which controls the network device to perform the following operations:

[0016] The network device configures an event and / or a beam for a terminal device;

[0017] The network device receives a measurement report or a scheduling request (SR) sent by the terminal device based on triggering of the event, wherein the measurement report comprises a layer 1 measurement result of a candidate cell;

[0018] The evaluation of the event is based on a beam of a serving cell and / or a beam of a candidate cell, and the beam of the serving cell and / or the beam of the candidate cell are configured by the network device and / or obtained by the terminal device from a transmission configuration indication (TCI) state.

[0019] One of the beneficial effects of the embodiments of the present application is that the beam of the serving cell and the beam of the candidate cell are determined, so that the understanding of the event evaluation of the terminal device (of different manufacturers) and the network device is consistent, unnecessary event-triggered layer 1 measurement reporting and event-untriggered layer 1 measurement reporting are avoided, on the one hand, resource waste is avoided, and on the other hand, terminal device mobility is ensured and wireless link failure is reduced.

[0020] Specific embodiments of the application are disclosed herein, and represented in the accompanying drawings, indicating the ways in which the principles of the application can be employed. It is understood that the embodiments of the application are not limited in scope to the specific embodiments described herein. Embodiments of the application include many alterations, modifications and equivalents within the spirit and scope of the appended claims.

[0021] Features described and / or illustrated with respect to one implementation can be used in the same or similar manner in one or more other implementations, in combination with other features in the other implementations, or in place of other features in the other implementations.

[0022] It should be emphasized that the term "comprises / comprising" when used in this text indicates the presence of the stated features, integers, steps or components, but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof. BRIEF DESCRIPTION OF DRAWINGS

[0023] Elements and features depicted in one drawing or embodiment of the application can be combined with elements and features depicted in one or more other drawings or embodiments, as

[0024] Figure 1 is a schematic diagram of a communication system of the present application;

[0025] Figure 2 is a schematic diagram of an inter-cell mobility scenario under the same gNB(-CU);

[0026] Figure 3 is a schematic diagram of an intra-CU LTM cell change procedure;

[0027] Figure 4 is a schematic diagram of contention free random access (CFRA);

[0028] Figure 5 is a schematic diagram of layer 1 measurement related parameters;

[0029] Figure 6 is a schematic diagram of a measurement model;

[0030] Figure 7 is a schematic diagram of a communication method of an embodiment of the first aspect;

[0031] Figure 8 is a schematic diagram of a communication method of an embodiment of the second aspect;

[0032] Figure 9 is another schematic diagram of a communication method of an embodiment of the second aspect;

[0033] Figure 10 is a schematic diagram of a communication apparatus of an embodiment of the third aspect;

[0034] Figure 11 is a schematic diagram of a communication apparatus of an embodiment of the fourth aspect;

[0035] Figure 12 is a schematic diagram of an electronic device of an embodiment of the fifth aspect. DETAILED DESCRIPTION

[0036] The foregoing, and other, features of the present application will become more apparent from the following description and accompanying drawings. In the description and drawings, like numbers in different drawings represent the same or similar elements. Described in detail below are specific embodiments of the present application, which illustrate the principles of the present application, and show part of the embodiments in which the principles of the present application can be employed. It is understood that the present application is not limited to the embodiments described, but rather, the present application includes all modifications, variations, and equivalents that fall within the scope of the appended claims.

[0037] In the embodiments of the present application, the terms "first", "second" and the like are used to distinguish different elements from each other, but do not indicate spatial arrangement or time sequence of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of the associated listed terms. The terms "comprise", "include", "have" and the like mean the presence of the stated features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.

[0038] In the embodiments of the present application, the singular form "a", "an" and the like includes the plural form, should be understood broadly as "one" or "a kind of", and not limited to the meaning of "one"; in addition, the term "said" should be understood as including both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least partially according to", and the term "based on" should be understood as "at least partially based on", unless the context clearly indicates otherwise.

[0039] In the embodiments of the present application, the term "communication network" or "wireless communication network" can refer to a network that conforms to any communication standard, such as New Radio (NR), Long Term Evolution (LTE), LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), etc.

[0040] In addition, the communication between devices in the communication system can be carried out according to any stage communication protocol, which can include but is not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), etc., and / or other currently known or future to be developed communication protocols.

[0041] In embodiments of the present application, the term "network device" refers to, for example, a device that accesses a terminal device to a communication network and provides services for the terminal device in a communication system. The network device can include, but is not limited to, the following devices: an integrated access and backhaul node (IAB-node), a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobile management entity (MME), a gateway, a server, a radio network controller (RNC), a base station controller (BSC), and the like.

[0042] In embodiments of the present application, the term "network device" refers to, for example, a device that accesses a terminal device to a communication network and provides services for the terminal device in a communication system. The network device can include, but is not limited to, the following devices: an integrated access and backhaul node (IAB-node), a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobile management entity (MME), a gateway, a server, a radio network controller (RNC), a base station controller (BSC), and the like.

[0043] In embodiments of the present application, the term "network device" refers to, for example, a device that accesses a terminal device to a communication network and provides services for the terminal device in a communication system. The network device can include, but is not limited to, the following devices: an integrated access and backhaul node (IAB-node), a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobile management entity (MME), a gateway, a server, a radio network controller (RNC), a base station controller (BSC), and the like.

[0044] In embodiments of the present application, the term "network device" refers to, for example, a device that accesses a terminal device to a communication network and provides services for the terminal device in a communication system. The network device can include, but is not limited to, the following devices: an integrated access and backhaul node (IAB-node), a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobile management entity (MME), a gateway, a server, a radio network controller (RNC), a base station controller (BSC), and the like.

[0045] For another example, in scenarios such as Internet of Things (IoT), a terminal device can also be a machine or an apparatus that performs monitoring or measurement, for example, can include but is not limited to: a machine type communication (MTC) terminal, a vehicle-mounted communication terminal, a device to device (D2D) terminal, a machine to machine (M2M) terminal, and the like.

[0046] In addition, the term "network side" or "network device side" refers to the side of the network, which can be a certain base station, or can include one or more network devices as described above. The term "user side" or "terminal side" or "terminal device side" refers to the side of the user or terminal, which can be a certain UE, or can include one or more terminal devices as described above.

[0047] In the following description, the terms "uplink control signal" and "uplink control information (UCI)" or "physical uplink control channel (PUCCH)" can be interchangeable without causing confusion, and the terms "uplink data signal" and "uplink data information" or "physical uplink shared channel (PUSCH)" can be interchangeable;

[0048] The terms "downlink control signal" and "downlink control information (DCI)" or "physical downlink control channel (PDCCH)" can be interchangeable, and the terms "downlink data signal" and "downlink data information" or "physical downlink shared channel (PDSCH)" can be interchangeable.

[0049] In addition, transmitting or receiving a PUSCH can be understood as transmitting or receiving uplink data carried by the PUSCH, transmitting or receiving a PUCCH can be understood as transmitting or receiving uplink information carried by the PUCCH, and transmitting or receiving a PRACH can be understood as transmitting or receiving a preamble carried by the PRACH; the uplink signal can include an uplink data signal and / or an uplink control signal, etc., and can also be referred to as uplink transmission (UL transmission) or uplink information or an uplink channel. Transmitting uplink transmission on an uplink resource can be understood as transmitting the uplink transmission using the uplink resource. Similarly, downlink data / signal / channel / information can be understood accordingly.

[0050] In the embodiments of the present application, the higher layer signaling can be, for example, radio resource control (RRC) signaling; for example, referred to as an RRC message, for example, including an MIB, system information, a dedicated RRC message; or referred to as an RRC IE. The higher layer signaling can also be, for example, MAC (Medium Access Control) signaling; or referred to as a MAC CE. However, the present application is not limited thereto.

[0051] The scenarios of the embodiments of the present application are described below by way of example, but the present application is not limited thereto.

[0052] FIG. 1 is a schematic diagram of a communication system of the present application, which schematically illustrates the case of taking a terminal device and a network device as an example. As shown in FIG. 1, the communication system 100 can include network devices 101 and 103 and a terminal device 102 (for simplicity, FIG. 1 only takes one terminal device as an example for illustration).

[0053] In the embodiments of the present application, the terminal device 102 can communicate with one of the network devices 101 and 103 in turn. Taking the case of the terminal device 102 communicating with the network device 101 as an example, the network device 101 and the terminal device 102 can perform existing services or future implementable services. For example, these services include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC), etc.

[0054] Among them, the terminal device 102 can send data to the network device 101, for example, using authorized (for example, configured authorization, that is, configured grant) or grant-free transmission mode. In the authorized mode, the network device 101 can receive data sent by one or more terminal devices 102 in the authorization, and feed back information to the terminal device 102, for example, ACK / NACK information, or indicate a new authorization to the terminal device 102, and the terminal device 102 can confirm the end of the transmission process according to the feedback information or the new authorization, or can also perform new data transmission, or can perform data retransmission. For the grant-free transmission mode, the terminal device can perform new data transmission on the configured authorization, or can perform retransmission.

[0055] Figure 2 shows a schematic diagram of an inter-cell mobility scenario under the same gNB(-CU). As shown in Figure 2, when a terminal device moves from the coverage area of one cell to the coverage area of another cell, service cell change needs to be performed at a certain point.

[0056] For example, terminal device A receives LTM candidate configuration including cell 2 / 3 / 4 under the same gNB when in cell 1; when moving to position B, LTM to cell 2 is performed; at position D, LTM to cell 3 is performed, that is, subsequent LTM.

[0057] Currently, service cell change is triggered by L3 measurement and completed by RRC signaling, and the reconfiguration with synchronization triggered by the change of primary cell (PCell) and primary secondary cell (PSCell) increases the release of secondary cells (SCells) as applicable. Cell-level mobility is triggered by explicit RRC signaling, that is, handover. The handover mechanism triggered by RRC requires the UE to at least reset the MAC entity and rebuild the radio link control (RLC). The RRC-managed handover supports with and without PDCP entity reconstruction. For DRBs using RLC AM mode, PDCP can be rebuilt with security key update, or initiate a data recovery process without key update. For DRBs using RLC UM mode, PDCP can be rebuilt with security key update, or remain unchanged without key update. For SRBs, PDCP can remain unchanged without key update, discard stored PDCP PDUs / SDUs, or be rebuilt with security key update.

[0058] For RRC triggered handover mechanism, all cases involve a full L2 (and LI) reset, resulting in longer latency, larger overhead and longer interruption time than beam switching mobility. The goal of layer LI / L2 mobility enhancement is to ensure serving cell change through LI / L2 signaling to reduce latency, overhead and interruption time.

[0059] LTM is a procedure in which the gNB receives an LI measurement report from the UE, based on which the gNB changes the UE’s serving cell by sending a cell change command via MAC CE. The MAC triggered cell switch mechanism (i.e. LTM cell switch) requires the UE to reset at least the MAC entity. RLC and PDCP handling depends on network configuration.

[0060] The procedure of LTM cell switch is shown in Figure 3. Subsequent LTMs are implemented by repeating the early synchronization, LTM cell switch execution and LTM cell switch completion steps and not releasing other LTM candidate configurations after each LTM cell switch completion. The basic procedure over the air interface applies to either master cell group (MCG) LTM or secondary cell group (SCG) LTM. As shown in Figure 3, the LTM procedure includes the following steps:

[0061] 1. UE in RRC_CONNECTED sends a MeasurementReport message to the gNB, the gNB decides to configure LTM and initiates LTM candidate cell configuration;

[0062] 2. The gNB sends a Radio Resource Control Reconfiguration (RRCReconfiguration) message including LTM candidate cell configuration to the UE;

[0063] 3. The UE stores the RRCReconfiguration message of the LTM candidate cell configuration and sends a Radio Resource Control Reconfiguration Complete (RRCReconfigurationComplete) message to the gNB;

[0064] 4a. Before receiving the cell command, the UE performs downlink (DL) synchronization of the candidate cell;

[0065] 4b. When UE-based TA measurement is configured, UE acquires the TA value of the candidate cell by measurement. Before receiving the cell command, UE performs early TA acquisition with the candidate cell at the request of the network. This is done by CFRA triggered from PDCCH order of the source cell and subsequent UE sending of preamble to the indicated candidate cell. To minimize the data interruption of the source cell caused by CFRA to the candidate cell, UE does not receive the random access response from the network device for acquiring the TA value, which is indicated in the cell change command. UE does not maintain the TA timer of the candidate cell, relying on the network to ensure TA validity;

[0066] 5. UE performs L1 measurement on the configured candidate cell and sends L1 measurement report to gNB, where L1 measurement should be performed as long as RRC reconfiguration (i.e. step 2) applies;

[0067] 6. gNB decides to perform cell handover to one target cell and sends a MAC CE including the candidate configuration index of the target cell to trigger cell change. UE switches to the target cell and applies the configuration indicated by the candidate configuration index;

[0068] 7. If UE does not have valid TA for the target cell, UE performs random access procedure to the target cell;

[0069] 8. UE completes the LTM cell change procedure by sending RRCReconfigurationComplete message to the target cell. If in step 7, UE performs random access (RA) procedure, UE considers the LTM cell handover execution successfully completed when the random access procedure is successfully completed. For RACH-less LTM, UE considers the LTM cell change execution successfully completed when UE determines that the network successfully received its first UL data.

[0070] For random access procedure on LTM candidate cell for early uplink timing advance (UL TA) acquisition, contention-free random access (CFRA) is used, which is triggered by physical downlink control channel order (PDCCH order). As shown in Figure 4, UE sends MSG1 to the cell without listening for a response from the cell. To support UE power ramping, UE can perform MSG1 retransmission as indicated by the network.

[0071] For subsequent LTM, steps 4a-8 can be performed multiple times using the LTM candidate configuration provided in step 2.

[0072] Layer 1 measurement and reporting:

[0073] For Layer 1 measurement and reporting, as shown in FIG. 5, the parameters configured by the network device include: RS configuration and reporting configuration.

[0074] The RS configuration includes: IE LTM-CSI-ResourceConfig (-> included in LTM-Config) defines a set of resources for one or more LTM candidates, and the set of resources includes one or more CSI (wherein IE LTM-CSI-ResourceConfig (included in LTM-Config) defines one or more CSI resources for one or more LTM candidate configurations).

[0075] The reporting configuration includes:

[0076] IE LTM-CSI-ReportConfig is used to configure reporting on cells containing LTM CSI ReportConfig;

[0077] Associating a LTM-CSI-ResourceConfigId;

[0078] Reporting {1, 2, 3, 4} cells and {1, 2, 3, 4} RSs (SSB) per cell in a single L1 measurement report instance;

[0079] Select the following reporting methods:

[0080] Periodic (Periodic): periodicity and offset of transmission channel state report (CSI ReportPeriodicityAndOffset), resource for transmission channel state information on physical uplink control channel (PUCCH-CSI-Resource);

[0081] Semi-persistent on PUCCH (semiPersistentOnPUCCH): CSI ReportPeriodicityAndOffset, PUCCH-CSI-Resource;

[0082] Semi-persistent on PUCCH (semiPersistentOnPUCCH): CSI ReportPeriodicityAndOffset, timing offset Y for semi-persistent reporting using physical uplink control channel (PUSCH) (Timing offset Y for semi persistent reporting using PUSCH);

[0083] Aperiodic: CSI ReportPeriodicyAndOffset, Timing offset Y for aperiodic reporting.

[0084] Layer 3 measurement and reporting:

[0085] In RRC_CONNECTED, the UE measures multiple beams or at least one beam of a cell, and averages the measurement results (power values) of these beams to obtain the cell quality. In this process, the UE is configured to consider a subset of the detected beams. The beams are filtered at two different levels: at the physical layer to obtain the beam quality, and at the RRC level to obtain the cell quality from multiple beams. The cell quality is obtained from beam measurements in the same way for serving and non-serving cells.

[0086] The measurement report can include the measurement results of the X best beams, if the UE has been configured by the gNB to do so.

[0087] The corresponding measurement model is shown in Figure 6. In Figure 6, the K beams correspond to the SSB or CSI-RS resources that the gNB configures for L3 mobility and that the UE detects at L1. The following describes each part of Figure 6.

[0088] A: beam specific samples within the physical layer.

[0089] Layer 1 filtering: internal layer 1 filtering of the inputs measured at point A; the exact filtering depends on the implementation.

[0090] A 1 : measurement reported by layer 1 to layer 3 after layer 1 filtering (i.e., beam specific measurement).

[0091] Beam Consolidation / Selection: consolidate beam-specific measurements to derive cell quality, standardize the behavior of the beam consolidation or beam selection and provide the configuration of this module by RRC signaling. The reporting period at B is equal to the one measurement period at A 1 . 1 .

[0092] B: a measurement (i.e. cell quality) obtained from the beam-specific measurements reported to layer 3 after beam consolidation or beam selection.

[0093] Layer 3 filtering for cell quality: filtering performed on the measurements provided at point B. Standardize the behavior of the layer 3 filters and provide the configuration of the layer 3 filters by RRC signaling. The filtering reporting period at C is equal to the one measurement period at B.

[0094] C: a measurement after processing in the layer 3 filter. The reporting rate is identical to the reporting rate at point B. This measurement after processing in the layer 3 filter is used as input for one or more evaluations of the reporting criteria.

[0095] Evaluation of reporting criteria: This involves examining whether an actual measurement report at point D is necessary. This evaluation can be based on more than one flow of measurements at reference point C, for example, comparing different measurements. For instance, inputting C and C... 1 This is illustrated by input C and C 1 The UE utilizes C,C at least each time. 1 A new measurement result is reported at point C,C. 1 Evaluate the reporting criteria. Standardize the behavior of the reporting criteria and provide this configuration via RRC signaling.

[0096] D: Send measurement report information or measurement report messages on the wireless interface.

[0097] Layer 3 Beam filtering: for A 1 Filtering was performed on the measurements provided at point A. 1 Filtering the measured values ​​involves performing specific measurements on the beam, standardizing the behavior of the beam filters, and providing the beam filters via RRC signaling. The filtering reporting period at E is equal to A. 1 Measurement period (one measurement period at A) 1 ).

[0098] E: Measurement after beam filtering, such as beam-specific measurement. Reporting rate and A 1 The reporting rate is identical to the reporting rate at point A. 1). The measurements after this beam filtering process are used as input to select the X measurements to be reported.

[0099] Beam selection for beam reporting: The X measurements are selected from the measurements provided at point E. The beam selection behavior is standardized and the configuration of this module is provided by RRC signaling.

[0100] F: The beam measurement information is included in the measurement report sent on the radio interface.

[0101] The measurement report has the following characteristics:

[0102] The measurement report includes the measurement identity associated to the measurement configuration that triggered the reporting;

[0103] The cell and beam measurement quantities included in the measurement report are configured by the network;

[0104] The number of non-serving cells to be reported can be limited by network configuration;

[0105] Cells belonging to an exclude-list configured by the network are not used for event evaluation and reporting, in contrast, when an allow-list is configured by the network, only cells belonging to the allow-list are used for event evaluation and reporting;

[0106] The beam measurements to be included in the measurement report are configured by the network, the content of the network configuration includes: only beam identifiers, or measurement results and beam identifiers, or no beam reporting.

[0107] Embodiments of the first aspect

[0108] Currently, for event triggered layer 1 measurement reporting, the following LTM events based on beam specific quality of serving cell and / or candidate cell are supported as L1 LTM measurement events:

[0109] Event LTM2: Beam of serving cell becomes worse than an absolute threshold;

[0110] Event LTM3: Beam of candidate cell becomes better than beam of serving cell by an offset;

[0111] Event LTM4: Beam of candidate cell becomes better than an absolute threshold;

[0112] Event LTM5: the beam of the serving cell becomes worse than an absolute threshold 1 and the beam of the candidate cell becomes better than an absolute threshold 2;

[0113] But what beams of the serving cell and the candidate cell are used for the above event evaluation need to be determined, otherwise the understanding of the event evaluation by the terminal and the network is inconsistent, the network cannot configure the event properly according to its own needs, thereby causing unnecessary or untimely event triggered layer 1 measurement reporting, the former causes resource waste, and the latter may cause problems such as too late handover or radio link failure, so that the system throughput is reduced and the user experience is poor.

[0114] To solve the above problem or at least similar problems, embodiments of a first aspect of the present application provide a communication method applied to a terminal device, for example, the terminal device 102 of FIG. 1.

[0115] FIG. 7 is a schematic diagram of a communication method according to an embodiment of the first aspect of the present application. As shown in FIG. 7, the communication method comprises:

[0116] 701. The terminal device performs event evaluation based on the beam of the serving cell and / or the beam of the candidate cell; and

[0117] 702. When the event-based layer 1 measurement reporting is triggered, the terminal device sends a measurement report to the network device, and the measurement report includes the layer 1 measurement result of the candidate cell.

[0118] Wherein, the beam of the serving cell and / or the beam of the candidate cell is configured by the network device and / or obtained by the terminal device from the transmission configuration indication state (TCI state).

[0119] In some embodiments, the serving cell includes a special cell and / or a secondary cell. In some real-time manner, the serving cell is a special cell in a cell group. For example, the PCell in the MCG or the PSCell in the SCG. In some embodiments, the serving cell includes a special cell and a secondary cell.

[0120] In some embodiments, the beam of the serving cell is obtained by the terminal device from the transmission configuration indication state (TCI state), wherein,

[0121] The beam of the serving cell corresponds to the quasi co-location reference signal (QCL RS) in the indicated transmission configuration indication state (TCI state) on the serving cell or the quasi co-location reference signal (QCL RS) in the current transmission configuration indication state (TCI state); or

[0122] The beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with or has a quasi co-location (QCL) relationship with a quasi co-location reference signal (QCL RS) in a transmission configuration indication state (TCI state) indicated on the serving cell or a quasi co-location reference signal (QCL RS) in a current transmission configuration indication state (TCI state).

[0123] In embodiments of the present application, the above-mentioned expression form of “the beam corresponds to the reference signal (RS) or the synchronization signal and physical broadcast channel block (SSB)” can be replaced by the expression form of “the beam is the reference signal (RS) or the synchronization signal and physical broadcast channel block (SSB)”, or replaced by “the beam is a beam corresponding to the reference signal (RS) or the synchronization signal and physical broadcast channel block (SSB)”, and the like. For example:

[0124] The beam of the serving cell is a quasi co-location reference signal (QCL RS) in a transmission configuration indication state (TCI state) indicated on the serving cell or a quasi co-location reference signal (QCL RS) in a current transmission configuration indication state (TCI state); or

[0125] The beam of the serving cell is a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with or has a quasi co-location (QCL) relationship with a quasi co-location reference signal (QCL RS) in a transmission configuration indication state (TCI state) indicated on the serving cell or a quasi co-location reference signal (QCL RS) in a current transmission configuration indication state (TCI state).

[0126] In some embodiments, the transmission configuration indication state (TCI state) is a transmission configuration indication state for physical downlink control channel (PDCCH) and / or physical downlink shared channel (PDSCH) reception.

[0127] In some embodiments, for event evaluation based on the beam of the serving cell and the beam of the candidate cell,

[0128] If the beam of the candidate cell corresponds to a synchronization signal and physical broadcast channel block (SSB), and a quasi co-location reference signal (QCL RS) in an indicated transmission configuration indication state (TCI state) on the serving cell or a quasi co-location reference signal (QCL RS) in a current transmission configuration indication state (TCI state) is a channel state information reference signal (CSI-RS), the beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with or has a quasi co-location (QCL) relationship with the quasi co-location reference signal (QCL RS) in the indicated transmission configuration indication state (TCI state) on the serving cell or the quasi co-location reference signal (QCL RS) in the current transmission configuration indication state (TCI state).

[0129] In some embodiments, the beam of the serving cell is obtained by the terminal device from a transmission configuration indication state (TCI state), wherein,

[0130] The beam of the serving cell corresponds to a quasi co-location reference signal (QCL RS) in an activated or configured transmission configuration indication state (TCI state) on the serving cell; or

[0131] The beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with or has a quasi co-location (QCL) relationship with a quasi co-location reference signal (QCL RS) in an activated or configured transmission configuration indication state (TCI state) on the serving cell.

[0132] In some embodiments, for the event evaluation based on the beam of the serving cell and the beam of the candidate cell,

[0133] If the beam of the candidate cell corresponds to a synchronization signal and physical broadcast channel block (SSB), and a quasi co-location reference signal (QCL RS) in an activated or configured transmission configuration indication state (TCI state) on the serving cell is a channel state information reference signal (CSI-RS), the beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with or has a quasi co-location (QCL) relationship with the quasi co-location reference signal (QCL RS) in the activated or configured transmission configuration indication state (TCI state) on the serving cell.

[0134] wherein the transmission configuration indication state (TCI state) is a transmission configuration indication state for physical downlink control channel (PDCCH) and / or physical downlink shared channel (PDSCH) reception.

[0135] In some embodiments, the beam of the serving cell is configured by the network device, wherein,

[0136] The beam of the serving cell corresponds to one of a set of one or more reference signals (RSs) for layer 1 measurement or a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) configured by the network device for the serving cell.

[0137] In some embodiments, the beam of the serving cell is configured by the network device, wherein,

[0138] The beam of the serving cell is the best beam in a set of one or more beams configured by the network device for the serving cell; or

[0139] The beam of the serving cell corresponds to the best reference signal (RS) in a plurality of reference signals (RSs) for layer 1 measurement configured for the serving cell or a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) with the best reference signal (RS).

[0140] wherein the best beam refers to the best beam in a set of one or more beams configured for the serving cell.

[0141] In some embodiments, the measurement result comprises at least one of: reference signal received power (RSRP), reference signal received quality (RSRQ) and signal to interference plus noise ratio (SINR).

[0142] In some embodiments, the beam of the candidate cell is obtained by the terminal device from a transmission configuration indication state (TCI state), wherein,

[0143] The beam of the candidate cell corresponds to a quasi co-location reference signal (QCL RS) in an activated transmission configuration indication state (TCI state(s)) on the candidate cell; or

[0144] The beam of the candidate cell corresponds to a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) with a quasi co-location (QCL) relationship with a quasi co-location reference signal (QCL RS) in an activated transmission configuration indication state (TCI state(s)) on the candidate cell.

[0145] In some embodiments, for the event evaluation based on the beam of the serving cell and the beam of the candidate cell,

[0146] If the beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) and the quasi co-location reference signal (QCL RS) in the activated transmission configuration indication state (TCI state(s)) on the candidate cell is a channel state information reference signal (CSI-RS), the beam of the candidate cell corresponds to a quasi co-location (QCL) relationship with or a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) of the quasi co-location reference signal (QCL RS) in the activated transmission configuration indication state (TCI state(s)) on the candidate cell.

[0147] wherein the transmission configuration indication state (TCI state(s)) is a transmission configuration indication state for physical downlink control channel (PDCCH) and / or physical downlink shared channel (PDSCH) reception.

[0148] In some embodiments, the beam of the candidate cell is obtained by the terminal device from the transmission configuration indication state (TCI state), wherein,

[0149] the beam of the candidate cell corresponds to a quasi co-location reference signal (QCL RS) in the configured transmission configuration indication state (TCI state(s)) on the candidate cell; or

[0150] the beam of the candidate cell corresponds to a quasi co-location (QCL) relationship with or a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) of the quasi co-location reference signal (QCL RS) in the configured transmission configuration indication state (TCI state(s)) on the candidate cell.

[0151] In embodiments of the present application, the quasi co-location reference signal (QCL RS) in the transmission configuration indication state (TCI state(s)) can also be a subset of the quasi co-location reference signals (QCL RSs) configured in the transmission configuration indication state (TCI state(s)).

[0152] In some embodiments, for the event evaluation based on the beam of the serving cell and the beam of the candidate cell,

[0153] If the beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) and the quasi co-location reference signal (QCL RS) in the configured transmission configuration indication state (TCI state(s)) on the candidate cell is a channel state information reference signal (CSI-RS), the beam of the candidate cell corresponds to a quasi co-location (QCL) relationship with or a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) of the quasi co-location reference signal (QCL RS) in the configured transmission configuration indication state (TCI state(s)) on the candidate cell.

[0154] wherein the transmission configuration indication state (TCI state) is a transmission configuration indication state for a physical downlink control channel (PDCCH) and / or a physical downlink shared channel (PDSCH) reception.

[0155] In some embodiments, the beam of the candidate cell is configured by the network device, wherein,

[0156] the beam of the candidate cell corresponds to one reference signal (RS) in a set or sets of reference signals (RS) configured by the network device for the candidate cell; or

[0157] the beam of the candidate cell is at least one best beam in a plurality of beams configured by the network device for the candidate cell, or the beam of the candidate cell corresponds to at least one reference signal (RS) with the best measurement result in a plurality of reference signals (RS) configured for the candidate cell for layer 1 measurement; or

[0158] the beam of the candidate cell corresponds to N reference signals (RS) in a plurality of reference signals (RS) configured by the network device for the candidate cell for layer 1 measurement, wherein N is configured by the network device or predefined, N >= 2.

[0159] wherein the set or sets of reference signals (RS) configured by the network device for the candidate cell are configured for layer 1 measurement, or for layer 1 / layer 2 triggered mobility (LTM), or for early synchronization, or for mobility.

[0160] wherein the measurement result comprises at least one of: reference signal received power (RSRP), reference signal received quality (RSRQ), and signal to interference plus noise ratio (SINR).

[0161] wherein the specific number of at least one reference signal (RS) with the best measurement result can be configured by the network device, for example, 1, 2 or more, which is not specifically limited in the present application.

[0162] In some embodiments, the terminal device receives indication information of the network device, the indication information indicating that the beam of the serving cell and / or the beam of the candidate cell used for the event evaluation is configured by the network device and / or obtained by the terminal device from a transmission configuration indication state (TCI state).

[0163] In some embodiments, in a case where the network device configures a reference signal (RS) for layer 1 measurement for the serving cell and / or the candidate cell, the beam of the serving cell and / or the beam of the candidate cell used for the event evaluation is configured by the network device; and / or

[0164] In a case where the network device does not configure a reference signal (RS) for layer 1 measurement for the serving cell and the candidate cell, the beam of the serving cell and / or the beam of the candidate cell used for the event evaluation is obtained by the terminal device from a transmission configuration indication state (TCI state).

[0165] In some embodiments, the beam of the serving cell and / or the beam of the candidate cell is associated with the configuration of the event.

[0166] In some embodiments, the configuration of the beam of the serving cell and / or the beam of the candidate cell comprises a first identity or a first index, and the first identity or the first index is included in the configuration of the event; or

[0167] The configuration of the event comprises a second identity or a second index, and the second identity or the second index is included in the configuration of the beam of the serving cell and / or the beam of the candidate cell; or

[0168] The configuration of the beam of the serving cell and / or the beam of the candidate cell comprises a first identity or a first index, the configuration of the event comprises a second identity or a second index, and the first identity or the first index is associated with the second identity or the second index through a third identity.

[0169] In some embodiments, the first identity or the first index and the type of the event are included in the measurement report; or

[0170] The second identity or the second index and the identity of the reference signal (RS) corresponding to the beam of the serving cell and / or the beam of the candidate cell are included in the measurement report; or

[0171] The third identity is included in the measurement report.

[0172] The first identity or the first index is used to identify / distinguish the beam or the reference signal.

[0173] The first identity or the first index comprises at least one of the following information:

[0174] A transmission configuration indication state index (TCI state index);

[0175] A resource configuration ID of layer 1 / layer 2 triggered mobility (LTM) channel state information (CSI);

[0176] A bitmap.

[0177] The second identity or the second index is used to identify / distinguish the event.

[0178] In some embodiments, the terminal device performs event evaluation based on the serving cell beam and / or the candidate cell beam, or the granularity of event evaluation, including:

[0179] For each user equipment (UE) or medium access control (MAC) entity, the terminal device performs event evaluation based on the serving cell beam and / or the candidate cell beam; or

[0180] For each frequency or band, the terminal device performs event evaluation based on the serving cell beam and / or the candidate cell beam; or

[0181] For each layer 1 / layer 2 triggered mobility (LTM) channel state information (CSI) resource configuration ID or reference signal (RS) set, the terminal device performs event evaluation based on the serving cell beam and / or the candidate cell beam.

[0182] In some embodiments, the event configuration based on the serving cell beam and / or the candidate cell beam, or the granularity of the event configuration based on the serving cell beam and / or the candidate cell beam, includes:

[0183] The event based on the serving cell beam and / or the candidate cell beam is configured per user equipment (UE) or medium access control (MAC) entity; or

[0184] The event based on the serving cell beam and / or the candidate cell beam is configured per frequency or band; or

[0185] The event based on the serving cell beam and / or the candidate cell beam is configured for each layer 1 / layer 2 triggered mobility (LTM) channel state information (CSI) resource configuration ID or reference signal (RS) set.

[0186] In some embodiments, the terminal device sends a measurement report to the network device, including:

[0187] When the terminal device has sufficient resources, the terminal device generates a medium access control control element (MAC CE) including at least the layer 1 measurement result of the candidate cell; or

[0188] When the terminal device has no resources or insufficient resources, the terminal device triggers a scheduling request (SR).

[0189] wherein the sufficient resources means that uplink shared channel (UL-SCH) resources are available for a new transmission and if the UL-SCH resources can accommodate the BFR MAC CE plus its subheader as a result of LCP.

[0190] In some embodiments, the MAC CE further comprises a layer 1 measurement result of the serving cell.

[0191] In some embodiments, the terminal device cancels the measurement reporting or stops sending the measurement reporting to the network device when at least one of the following conditions is met:

[0192] the measurement reporting of the beam or the beam group of the candidate cell has been successfully sent;

[0193] an event leaving condition is met;

[0194] the beam or the beam group of the serving cell and / or the candidate cell is reconfigured;

[0195] the beam of the serving cell is changed.

[0196] wherein the judging condition that the measurement reporting has been successfully sent comprises whether a PDCCH is received. That is, when the PDCCH is received, it is determined that the measurement reporting has been successfully sent, the PDCCH indicating or scheduling an uplink grant (UL_grant) of a new transmission of a hybrid automatic repeat request (HARQ) process for sending the measurement reporting.

[0197] wherein the event leaving condition is met is valid when a leaving condition is configured.

[0198] wherein the beam of the serving cell being changed corresponds to a case that the terminal device obtains the beam of the serving cell from a transmission configuration indication state (TCI state). That is, the beam of the serving cell obtained by the terminal device from the transmission configuration indication state (TCI state) is changed, so that the measurement reporting is cancelled or the sending of the measurement reporting to the network device is stopped.

[0199] wherein the event comprises:

[0200] Event LTM1: a beam of a serving cell becomes better than an absolute threshold;

[0201] Event LTM2: a beam of a serving cell becomes worse than an absolute threshold;

[0202] Event LTM3: a beam of a candidate cell becomes better than a beam of a serving cell by an offset;

[0203] Event LTM4: a beam of a candidate cell becomes better than an absolute threshold;

[0204] Event LTM5: a beam of a serving cell becomes worse than a first absolute threshold and a beam of a candidate cell becomes better than a second absolute threshold.

[0205] The technical solution of the embodiment of the first aspect of the application determines the beam of the serving cell and the beam of the candidate cell, so that the terminal device (of different manufacturers) and the network device are consistent in understanding the event evaluation, avoiding unnecessary event triggering of layer 1 measurement reporting and event not triggering of layer 1 measurement reporting in time, on the one hand, resource waste can be avoided, and on the other hand, terminal device mobility and wireless link success are ensured.

[0206] Embodiment of the second aspect

[0207] The embodiment of the second aspect of the application provides a communication method applied to a network device. The method corresponds to the communication method of the embodiment of the first aspect.

[0208] As shown in FIG. 8, the communication method of the embodiment of the second aspect includes:

[0209] 801, the network device configures an event and / or a beam for a terminal device;

[0210] 802, the network device receives a measurement report or a scheduling request (SR) sent by the terminal device based on triggering of the event, wherein the measurement report includes a layer 1 measurement result of a candidate cell;

[0211] Wherein, the evaluation of the event is based on a beam of a serving cell and / or a beam of a candidate cell, and the beam of the serving cell and / or the beam of the candidate cell is configured by the network device and / or obtained by the terminal device from a transmission configuration indication state (TCI state).

[0212] In some embodiments, the network device configures a beam for the terminal device, including: the network device configures one or more reference signals (RSs) for layer 1 measurement for a serving cell.

[0213] In some real-time manners, the beam of the serving cell corresponds to one of a set of one or more reference signals (RSs) for layer 1 measurement or a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with the one of the set of one or more reference signals (RSs) for layer 1 measurement configured by the network device for the serving cell; or

[0214] The beam of the serving cell is a best beam of a set of one or more beams configured by the network device for the serving cell; or

[0215] The beam of the serving cell corresponds to a reference signal (RS) for layer 1 measurement or a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with the reference signal (RS) for layer 1 measurement with a best measurement result among a plurality of reference signals (RSs) for layer 1 measurement configured for the serving cell.

[0216] The measurement result includes at least one of a reference signal received power (RSRP), a reference signal received quality (RSRQ), and a signal to interference plus noise ratio (SINR).

[0217] In some embodiments, the beam of the serving cell can also be obtained by the terminal device from a transmission configuration indication state (TCI state), specifically including:

[0218] Option 1-1: The beam of the serving cell corresponds to a quasi co-location reference signal (QCL RS) in a transmission configuration indication state (TCI state) indicated on the serving cell or a quasi co-location reference signal (QCL RS) in a current transmission configuration indication state (TCI state); or

[0219] Option 1-2: The beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with a quasi co-location reference signal (QCL RS) in a transmission configuration indication state (TCI state) indicated on the serving cell or a quasi co-location reference signal (QCL RS) in a current transmission configuration indication state (TCI state); or

[0220] Option 1-3: The beam of the serving cell corresponds to a quasi co-location reference signal (QCL RS) in an activated or configured transmission configuration indication state (TCI state) on the serving cell; or

[0221] Option 1-4: The beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with a quasi co-location reference signal (QCL RS) in an activated or configured transmission configuration indication state (TCI state) on the serving cell.

[0222] In implementation, the transmission configuration indication state (TCI state) is a transmission configuration indication state of a physical downlink control channel (PDCCH) and / or a physical downlink shared channel (PDSCH) reception.

[0223] If the beam of the candidate cell corresponds to a synchronization signal and physical broadcast channel block (SSB), and the quasi co-location reference signal (QCL RS) in option 1-1 is a channel state information reference signal (CSI-RS), the beam of the serving cell is determined by the above option 1-2.

[0224] If the beam of the candidate cell corresponds to a synchronization signal and physical broadcast channel block (SSB), and the quasi co-location reference signal (QCL RS) in option 1-3 is a channel state information reference signal (CSI-RS), the beam of the serving cell is determined by the above option 1-4.

[0225] In some embodiments, the network device configures a beam for the terminal device, comprising:

[0226] The network device configures one or more reference signals (RSs) for the candidate cell; or

[0227] The network device configures a number N for the candidate cell, wherein N reference signals (RSs) in the one or more reference signals (RSs) for layer 1 measurement correspond to the beam of the candidate cell for event evaluation, and N >= 2.

[0228] In some embodiments, the one or more reference signals (RSs) configured by the network device for the candidate cell are configured for layer 1 measurement, or for layer 1 / layer 2 triggered mobility (LTM), or for early synchronization, or for mobility.

[0229] In some embodiments, the beam of the candidate cell corresponds to one reference signal (RS) in the one or more reference signals (RSs) configured by the network device for the candidate cell; or

[0230] The beam of the candidate cell is at least one best beam in the multiple beams configured by the network device for the candidate cell, or the beam of the candidate cell corresponds to at least one reference signal (RS) with the best measurement result in the multiple reference signals (RSs) for layer 1 measurement configured for the candidate cell; or

[0231] The beam of the candidate cell corresponds to N reference signals (RSs) in the multiple reference signals (RSs) for layer 1 measurement configured by the network device for the candidate cell, wherein N >= 2.

[0232] The one or more reference signals (RSs) configured by the network device for the candidate cell are configured for layer 1 measurement, or for layer 1 / layer 2 triggered mobility (LTM), or for early synchronization, or for mobility.

[0233] The measurement result includes at least one of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), and signal to interference plus noise ratio (SINR).

[0234] The specific number of at least one reference signal (RS) with the best measurement result can be configured by the network device, for example, 1, 2, or more, which is not limited in the present application.

[0235] In some embodiments, the beam of the candidate cell can also be obtained by the terminal device from the transmission configuration indication state (TCI state), specifically including:

[0236] Option 3-1: The beam of the candidate cell corresponds to a quasi co-location reference signal (QCL RS) in the activated transmission configuration indication state (TCI state(s)) on the candidate cell; or

[0237] Option 3-2: The beam of the candidate cell corresponds to a quasi co-location (QCL) relationship or a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) with a quasi co-location reference signal (QCL RS) in the activated transmission configuration indication state (TCI state(s)) on the candidate cell.

[0238] Option 3-3: The beam of the candidate cell corresponds to a quasi co-location reference signal (QCL RS) in the configured transmission configuration indication state (TCI state(s)) on the candidate cell; or

[0239] Option 3-4: The beam of the candidate cell corresponds to a quasi co-location (QCL) relationship or a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) with a quasi co-location reference signal (QCL RS) in the configured transmission configuration indication state (TCI state(s)) on the candidate cell.

[0240] In specific implementation, the transmission configuration indication state (TCI state) is the transmission configuration indication state of physical downlink control channel (PDCCH) and / or physical downlink shared channel (PDSCH) reception.

[0241] If the beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB), and the quasi co-location reference signal (QCL RS) in option 3-1 is a channel state information reference signal (CSI-RS), the beam of the candidate cell is determined by option 3-2.

[0242] If the beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) and the quasi co-location reference signal (QCL RS) in Option 3-3 is a channel state information reference signal (CSI-RS), the beam of the candidate cell is determined by Option 3-4.

[0243] In some embodiments, as shown in FIG. 9, the communication method further includes:

[0244] 901. The network device configures the terminal device with indication information, the indication information indicating that the beam of the serving cell and / or the beam of the candidate cell of the event is configured by the network device and / or obtained by the terminal device from a transmission configuration indication state (TCI state).

[0245] In some embodiments, as shown in FIG. 9, the communication method further includes:

[0246] 902. The network device configures an association between the beam of the serving cell and / or the beam of the candidate cell and the event.

[0247] The network device configures an association between the beam of the serving cell and / or the beam of the candidate cell and the event, including:

[0248] The network device configures a first identifier or a first index for the beam of the serving cell and / or the beam of the candidate cell, and includes the first identifier or the first index in the configuration of the event; or

[0249] The network device configures a second identifier or a second index for the event, and includes the second identifier or the second index in the configuration of the beam of the serving cell and / or the beam of the candidate cell; or

[0250] The network device configures a first identifier or a first index for the beam of the serving cell and / or the beam of the candidate cell, configures a second identifier or a second index for the event, and associates the first identifier or the first index with the second identifier or the second index through a third identifier.

[0251] In some embodiments, the network device configures the terminal device with the event, including:

[0252] The event based on the beam of the serving cell and / or the beam of the candidate cell is configured per user equipment (UE) or media access control (MAC) entity by the network device; or

[0253] The event based on the beam of the serving cell and / or the beam of the candidate cell is configured per frequency or band (per frequency (band)) by the network device; or

[0254] The network device performs an event based on a serving cell beam and / or a candidate cell beam, and a resource configuration ID or a set of reference signals (RSs) of a layer 1 / layer 2 triggered mobility (LTM) channel state information (CSI) is configured.

[0255] In some embodiments, the network device configures the terminal device with the resource of the scheduling request (SR).

[0256] The resource of the scheduling request (SR) is used for a resource request of a measurement report, or the resource of the scheduling request (SR) is used for a resource request of at least one of a base station router (BSR), a bit forwarding router (BFR), and listen before talk (LBT). In some embodiments, the resource of the scheduling request (SR) is further used for a resource request of a medium access control control element (MAC CE) including at least a layer 1 measurement result of a candidate cell.

[0257] The above only describes the steps or processes related to the present application, but the present application is not limited thereto. The method of the embodiments of the present application can further include other steps or processes, and the specific content of the steps or processes can be referred to the related art.

[0258] The above embodiments only exemplarily describe the embodiments of the present application, but the present application is not limited thereto, and can be appropriately modified on the basis of the above embodiments. For example, the above embodiments can be used alone or in combination.

[0259] Embodiments of the third aspect

[0260] The embodiments of the third aspect of the present application provide a communication device applied to a terminal device. The device corresponds to the communication method of the embodiments of the first aspect.

[0261] FIG. 10 is a schematic diagram of a communication device in the embodiments of the third aspect, as shown in FIG. 10, the communication device 900 includes a first processing unit 1001, which controls the terminal device to perform the following operations:

[0262] The terminal device performs event evaluation based on a serving cell beam and / or a candidate cell beam; and

[0263] When the event-based layer 1 measurement reporting is triggered, the terminal device sends a measurement report to the network device, the measurement report including the layer 1 measurement results of the candidate cell;

[0264] Wherein, the beam of the serving cell and / or the beam of the candidate cell is configured by the network device and / or obtained by the terminal device from a transmission configuration indication state (TCI state).

[0265] Wherein, the serving cell includes a special cell and / or a secondary cell. In some real-time ways, the serving cell is a special cell in a cell group. For example, a PCell in an MCG, or a PSCell in an SCG.

[0266] In some embodiments, the serving cell includes a special cell and a secondary cell.

[0267] In some embodiments, the beam of the serving cell is obtained by the terminal device from a transmission configuration indication state (TCI state), including:

[0268] Option 1-1: the beam of the serving cell corresponds to a quasi co-location reference signal (QCL RS) in a transmission configuration indication state (TCI state) indicated on the serving cell or a quasi co-location reference signal (QCL RS) in a current transmission configuration indication state (TCI state); or

[0269] Option 1-2: the beam of the serving cell corresponds to a quasi co-location reference signal (QCL RS) in a transmission configuration indication state (TCI state) indicated on the serving cell or a quasi co-location reference signal (QCL RS) in a current transmission configuration indication state (TCI state) has a quasi co-location (QCL) relationship or a quasi co-location (QCLed) synchronization signal and physical broadcast channel block (SSB).

[0270] Further, for event evaluation based on the beam of the serving cell and the beam of the candidate cell,

[0271] If the beam of the candidate cell corresponds to a synchronization signal and physical broadcast channel block (SSB), and the quasi co-location reference signal (QCL RS) in the indicated transmission configuration indication state (TCI state) on the serving cell or the quasi co-location reference signal (QCL RS) in the current transmission configuration indication state (TCI state) is a channel state information reference signal (CSI-RS), i.e., the quasi co-location reference signal (QCL RS) in option 1-1, then the beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with the quasi co-location reference signal (QCL RS) in the indicated transmission configuration indication state (TCI state) on the serving cell or the quasi co-location reference signal (QCL RS) in the current transmission configuration indication state (TCI state), i.e., option 1-2 is adopted to determine the beam of the serving cell.

[0272] In this embodiment, the transmission configuration indication state (TCI state) is the transmission configuration indication state for physical downlink control channel (PDCCH) and / or physical downlink shared channel (PDSCH) reception.

[0273] In some embodiments, the beam of the serving cell is obtained by the terminal device from the transmission configuration indication state (TCI state), including:

[0274] Option 1-3: the beam of the serving cell corresponds to a quasi co-location reference signal (QCL RS) in the activated or configured transmission configuration indication state (TCI state) on the serving cell; or

[0275] Option 1-4: the beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with a quasi co-location reference signal (QCL RS) in the activated or configured transmission configuration indication state (TCI state) on the serving cell.

[0276] Further, for the event evaluation based on the beam of the serving cell and the beam of the candidate cell,

[0277] If the beam of the candidate cell corresponds to a synchronization signal and physical broadcast channel block (SSB), and the quasi co-location reference signal (QCL RS) in the activated or configured transmission configuration indication state (TCI state) on the serving cell is a channel state information reference signal (CSI-RS), i.e., the quasi co-location reference signal (QCL RS) in the above option 1-3 is a channel state information reference signal (CSI-RS), the beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) that has a quasi co-location (QCL) relationship or is quasi co-located (QCLed) with the quasi co-location reference signal (QCL RS) in the activated or configured transmission configuration indication state (TCI state) on the serving cell, i.e., the beam of the serving cell is determined by using the above option 1-4.

[0278] In this embodiment, the transmission configuration indication state (TCI state) is a transmission configuration indication state for physical downlink control channel (PDCCH) and / or physical downlink shared channel (PDSCH) reception.

[0279] In some embodiments, the beam of the serving cell is configured by the network device, including:

[0280] Option 2-1: the beam of the serving cell corresponds to one reference signal (RS) in a set of one or more reference signals (RSs) configured by the network device for the serving cell for layer 1 measurement or a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with the one reference signal (RS).

[0281] In some embodiments, the beam of the serving cell is configured by the network device, including:

[0282] Option 2-2: the beam of the serving cell is the best beam in a set of one or more beams configured by the network device for the serving cell; or

[0283] the beam of the serving cell corresponds to a reference signal (RS) with the best measurement result in a plurality of reference signals (RSs) configured for the serving cell for layer 1 measurement or a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with the best reference signal (RS).

[0284] wherein the measurement result includes at least one of: reference signal received power (RSRP), reference signal received quality (RSRQ), and signal to interference plus noise ratio (SINR).

[0285] In some embodiments, the beam of the candidate cell is obtained by the terminal device from the transmission configuration indication state (TCI state), including:

[0286] Option 3-1: the beam of the candidate cell corresponds to a quasi co-located reference signal (QCL RS) in activated transmission configuration indication state (TCI state(s)) on the candidate cell; or

[0287] Option 3-2: the beam of the candidate cell corresponds to a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) or a quasi co-located (QCL) reference signal (QCL RS) in activated transmission configuration indication state (TCI state(s)) on the candidate cell.

[0288] Further, for the event evaluation based on the beam of the serving cell and the beam of the candidate cell,

[0289] If the beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) and the quasi co-located reference signal (QCL RS) in activated transmission configuration indication state (TCI state(s)) on the candidate cell is a channel state information reference signal (CSI-RS), i.e., the quasi co-located reference signal (QCL RS) in Option 3-1 is a channel state information reference signal (CSI-RS), the beam of the candidate cell corresponds to a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) or a quasi co-located (QCL) reference signal (QCL RS) in activated transmission configuration indication state (TCI state(s)) on the candidate cell, i.e., the beam of the candidate cell is determined by using Option 3-2.

[0290] In the embodiment, the transmission configuration indication state (TCI state(s)) is a transmission configuration indication state for physical downlink control channel (PDCCH) and / or physical downlink shared channel (PDSCH) reception.

[0291] In some embodiments, the beam of the candidate cell is obtained by the terminal device from the transmission configuration indication state (TCI state), and specifically, the beam of the candidate cell is determined as follows:

[0292] Option 3-3: the beam of the candidate cell corresponds to a quasi co-located reference signal (QCL RS) in configured transmission configuration indication state (TCI state(s)) on the candidate cell; or

[0293] Option 3-4: the beam of the candidate cell corresponds to a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) or a quasi co-located (QCL) reference signal (QCL RS) in configured transmission configuration indication state (TCI state(s)) on the candidate cell.

[0294] Further, for the event evaluation based on the beam of the serving cell and the beam of the candidate cell,

[0295] If the beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB), and the quasi co-location reference signal (QCL RS) in the configured transmission configuration indication state (TCI state(s)) on the candidate cell is a channel state information reference signal (CSI-RS), i.e., the quasi co-location reference signal (QCL RS) in option 3-3 is a channel state information reference signal (CSI-RS), the beam of the candidate cell corresponds to a quasi co-location (QCL) relationship or a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) with the quasi co-location reference signal (QCL RS) in the configured transmission configuration indication state (TCI state(s)) on the candidate cell, i.e., option 3-4 is adopted to determine the beam of the candidate cell.

[0296] In this embodiment, the transmission configuration indication state (TCI state(s)) is the transmission configuration indication state for physical downlink control channel (PDCCH) and / or physical downlink shared channel (PDSCH) reception.

[0297] In some embodiments, the quasi co-location reference signal (QCL RS) in the above-mentioned transmission configuration indication state (TCI state(s)) can also be a subset of the quasi co-location reference signals (QCL RSs) configured in the transmission configuration indication state (TCI state(s)).

[0298] In some embodiments, the beam of the candidate cell is configured by the network device, including:

[0299] Option 4-1: the beam of the candidate cell corresponds to one reference signal (RS) in a group or multiple groups of reference signals (RSs) configured by the network device for the candidate cell; or

[0300] Option 4-2: the beam of the candidate cell is at least one best beam in multiple beams configured by the network device for the candidate cell, or the beam of the candidate cell corresponds to at least one reference signal (RS) with the best measurement result in multiple reference signals (RSs) configured for the candidate cell for layer 1 measurement; or

[0301] Option 4-3: the beam of the candidate cell corresponds to N reference signals (RSs) in multiple reference signals (RSs) configured by the network device for the candidate cell for layer 1 measurement, wherein N is configured by the network device or predefined, N >= 2.

[0302] The one or more reference signals (RSs) configured by the network device for the candidate cell are configured for layer 1 measurement, or are configured for layer 1 / layer 2 triggered mobility (LTM), or are configured for early synchronization, or are configured for mobility.

[0303] The measurement result includes at least one of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), and signal to interference plus noise ratio (SINR).

[0304] The specific number of at least one reference signal (RS) with the best measurement result can be configured by the network device, for example, 1, 2, or more, which is not limited in the present application.

[0305] In some embodiments, the first processing unit 1001 further controls the terminal device to perform the following operations:

[0306] The terminal device receives indication information of the network device, and the indication information indicates that the beam of the serving cell and / or the beam of the candidate cell used for the event evaluation is configured by the network device and / or obtained by the terminal device from a transmission configuration indication state (TCI state).

[0307] In some embodiments, the first processing unit 1001 further controls the terminal device to perform the following operations:

[0308] In the case where the network device configures the reference signal (RS) for layer 1 measurement for the serving cell and / or the candidate cell, the beam of the serving cell and / or the beam of the candidate cell used for the event evaluation is configured by the network device; and / or

[0309] In the case where the network device does not configure the reference signal (RS) for layer 1 measurement for the serving cell and the candidate cell, the beam of the serving cell and / or the beam of the candidate cell used for the event evaluation is obtained by the terminal device from a transmission configuration indication state (TCI state).

[0310] In some embodiments, the beam of the serving cell and / or the beam of the candidate cell is associated with the configuration of the event.

[0311] In some embodiments, the configuration of the beam of the serving cell and / or the beam of the candidate cell includes a first identifier or a first index, and the first identifier or the first index is included in the configuration of the event; or

[0312] The configuration of the event includes a second identifier or a second index, and the second identifier or the second index is included in the configuration of the beam of the serving cell and / or the beam of the candidate cell; or

[0313] The configuration of the beam of the serving cell and / or the beam of the candidate cell comprises a first identity or a first index, the configuration of the event comprises a second identity or a second index, and the first identity or the first index is associated with the second identity or the second index by a third identity.

[0314] In some embodiments, the first identity or the first index and the type of the event are included in the measurement report; or

[0315] The second identity or the second index and an identity of a reference signal (RS) corresponding to the beam of the serving cell and / or the beam of the candidate cell are included in the measurement report; or

[0316] The third identity is included in the measurement report.

[0317] In some embodiments, the first identity or the first index is used to identify / distinguish the beam or the reference signal.

[0318] The first identity or the first index comprises at least one of the following information:

[0319] A transmission configuration indication state index (TCI state index);

[0320] A resource configuration ID of a layer 1 / layer 2 triggered mobility (LTM) channel state information (CSI);

[0321] A bitmap.

[0322] The second identity or the second index is used to identify / distinguish the event.

[0323] In some embodiments, the terminal device performs the event evaluation based on the beam of the serving cell and / or the beam of the candidate cell, comprising:

[0324] The terminal device performs the event evaluation based on the beam of the serving cell and / or the beam of the candidate cell for each user equipment (UE) or medium access control (MAC) entity; or

[0325] The terminal device performs the event evaluation based on the beam of the serving cell and / or the beam of the candidate cell for each frequency or band (per frequency (band)); or

[0326] The terminal device performs the event evaluation based on the beam of the serving cell and / or the beam of the candidate cell for each layer 1 / layer 2 triggered mobility (LTM) channel state information (CSI) resource configuration ID or reference signal (RS) set.

[0327] In some embodiments, the event configuration based on the serving cell’s beam and / or the candidate cell’s beam includes:

[0328] The event based on the serving cell’s beam and / or the candidate cell’s beam is configured per user equipment (UE) or medium access control (MAC) entity; or

[0329] The event based on the serving cell’s beam and / or the candidate cell’s beam is configured per frequency or band; or

[0330] The event based on the serving cell’s beam and / or the candidate cell’s beam is configured with a set of resource configuration IDs or reference signals (RSs) for each layer 1 / layer 2 triggered mobility (LTM) channel state information (CSI).

[0331] In some embodiments, the terminal device sends a measurement report to the network device includes:

[0332] When the terminal device has sufficient resources, the terminal device generates a medium access control control element (MAC CE) including at least the layer 1 measurement result of the candidate cell; or

[0333] When the terminal device has no resources or insufficient resources, the terminal device triggers a scheduling request (SR).

[0334] Wherein, the sufficient resources refer to: uplink shared channel (UL-SCH) resources are available for a new transmission and if the UL-SCH resources can accommodate the BFR MAC CE plus its subheader as a result of LCP.

[0335] In some embodiments, the medium access control control element (MAC CE) further includes the layer 1 measurement result of the serving cell.

[0336] In some embodiments, the first processing unit further controls the terminal device to perform the following operations:

[0337] The terminal device cancels the measurement report or stops sending the measurement report to the network device when at least one of the following conditions is met:

[0338] The measurement report including the beam or beam group of the candidate cell has been successfully sent;

[0339] An event leaving condition is met;

[0340] The beam or beam group of the serving cell and / or the candidate cell is reconfigured;

[0341] The beam of the serving cell is changed.

[0342] In some embodiments, the event includes:

[0343] The beam of the serving cell becomes better than an absolute threshold;

[0344] The beam of the serving cell becomes worse than an absolute threshold;

[0345] The beam of the candidate cell becomes better than the beam of the serving cell by an offset;

[0346] The beam of the candidate cell becomes better than an absolute threshold;

[0347] The beam of the serving cell becomes worse than a first absolute threshold and the beam of the candidate cell becomes better than a second absolute threshold.

[0348] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The communication apparatus 1000 of the embodiments of the present application can also include other components or modules, and the specific content of these components or modules can be referred to the related art.

[0349] In addition, for the sake of simplicity, only the connection relationship or signal path between the components or modules is exemplarily shown in FIG. 10, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above components or modules can be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc.; the present application is not limited thereto.

[0350] The above embodiments only exemplarily describe the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications can be made on the basis of the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0351] Embodiments of the fourth aspect

[0352] The embodiment of the fourth aspect of the present application provides a communication device, which is applied to a network equipment. The device corresponds to the communication method of the embodiment of the second aspect.

[0353] FIG. 11 is a schematic diagram of a communication device in the embodiment of the fourth aspect. As shown in FIG. 11, the communication device 1100 includes a second processing unit 1101, which controls the network equipment to perform the following operations:

[0354] The network equipment configures an event and / or a beam for the terminal equipment;

[0355] The network equipment receives a measurement report or a scheduling request (SR) sent by the terminal equipment based on the triggering of the event, wherein the measurement report includes a layer 1 measurement result of the candidate cell;

[0356] The evaluation of the event is based on a beam of a serving cell and / or a beam of a candidate cell, which is configured by the network equipment and / or obtained by the terminal equipment from a transmission configuration indication state (TCI state).

[0357] In some embodiments, the network equipment configures a beam for the terminal equipment, including: the network equipment configures a set of one or more reference signals (RSs) for layer 1 measurement for the serving cell.

[0358] In some real-time manners, the beam of the serving cell corresponds to one of the set of one or more reference signals (RSs) for layer 1 measurement configured by the network equipment for the serving cell or a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with the reference signal (RS); or

[0359] The beam of the serving cell is the best beam in the set of one or more beams configured by the network equipment for the serving cell; or

[0360] The beam of the serving cell corresponds to the best reference signal (RS) in the set of multiple reference signals (RSs) for layer 1 measurement configured for the serving cell or a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with the best reference signal (RS).

[0361] The measurement result includes at least one of the following: reference signal received power (RSRP), reference signal received quality (RSRQ) and signal to interference plus noise ratio (SINR).

[0362] In some embodiments, the beam of the serving cell can also be obtained by the terminal equipment from a transmission configuration indication state (TCI state), specifically including:

[0363] Option 1-1: The beam of the serving cell corresponds to a quasi co-location reference signal (QCL RS) in a transmission configuration indication state (TCI state) indicated on the serving cell or a quasi co-location reference signal (QCL RS) in a current transmission configuration indication state (TCI state); or

[0364] Option 1-2: The beam of the serving cell corresponds to a quasi co-location reference signal (QCL RS) in a transmission configuration indication state (TCI state) indicated on the serving cell or a quasi co-location reference signal (QCL RS) in a current transmission configuration indication state (TCI state) has a quasi co-location (QCL) relationship or is quasi co-located (QCLed) with a synchronization signal and physical broadcast channel block (SSB); or

[0365] Option 1-3: The beam of the serving cell corresponds to a quasi co-location reference signal (QCL RS) in an activated or configured transmission configuration indication state (TCI state) on the serving cell; or

[0366] Option 1-4: The beam of the serving cell corresponds to a quasi co-location reference signal (QCL RS) in an activated or configured transmission configuration indication state (TCI state) on the serving cell has a quasi co-location (QCL) relationship or is quasi co-located (QCLed) with a synchronization signal and physical broadcast channel block (SSB).

[0367] In specific implementation, the transmission configuration indication state (TCI state) is a transmission configuration indication state of physical downlink control channel (PDCCH) and / or physical downlink shared channel (PDSCH) reception.

[0368] If the beam of the candidate cell corresponds to a synchronization signal and physical broadcast channel block (SSB), and the quasi co-location reference signal (QCL RS) in Option 1-1 is a channel state information reference signal (CSI-RS), the beam of the serving cell is determined by Option 1-2 described above.

[0369] If the beam of the candidate cell corresponds to a synchronization signal and physical broadcast channel block (SSB), and the quasi co-location reference signal (QCL RS) in Option 1-3 is a channel state information reference signal (CSI-RS), the beam of the serving cell is determined by Option 1-4 described above.

[0370] In some embodiments, the network device configures a beam for the terminal device, including:

[0371] The network device configures one or more reference signals (RSs) for the candidate cell; or

[0372] The network device configures a number N for the candidate cell, wherein N reference signals (RSs) in one or more sets of reference signals (RSs) for layer 1 measurement correspond to beams of the candidate cell of the event, and N >= 2.

[0373] In some embodiments, the one or more sets of reference signals (RSs) are configured for layer 1 measurement, or for layer 1 / layer 2 triggered mobility (LTM), or for early synchronization, or for mobility.

[0374] In some embodiments, the beams of the candidate cell correspond to one reference signal (RS) in one or more sets of reference signals (RSs) configured by the network device for the candidate cell; or

[0375] The beams of the candidate cell are at least one best beam in a plurality of beams configured by the network device for the candidate cell, or the beams of the candidate cell correspond to at least one reference signal (RS) with the best measurement result in a plurality of reference signals (RSs) for layer 1 measurement configured for the candidate cell; or

[0376] The beams of the candidate cell correspond to N reference signals (RSs) in a plurality of reference signals (RSs) for layer 1 measurement configured by the network device for the candidate cell, wherein N >= 2.

[0377] In some embodiments, the one or more sets of reference signals (RSs) configured by the network device for the candidate cell are configured for layer 1 measurement, or for layer 1 / layer 2 triggered mobility (LTM), or for early synchronization, or for mobility.

[0378] In some embodiments, the measurement result includes at least one of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), and signal to interference plus noise ratio (SINR).

[0379] In some embodiments, the specific number of at least one reference signal (RS) with the best measurement result can be configured by the network device, for example, 1, 2, or more, which is not limited in the present application.

[0380] In some embodiments, the beams of the candidate cell can also be obtained by the terminal device from a transmission configuration indication state (TCI state), specifically including:

[0381] Option 3-1: The beams of the candidate cell correspond to quasi co-location reference signals (QCL RSs) in activated transmission configuration indication states (TCI states) on the candidate cell; or

[0382] Option 3-2: The beam of the candidate cell corresponds to a quasi co-location (QCL) relationship with a quasi co-location reference signal (QCL RS) in an activated transmission configuration indication state (TCI state) on the candidate cell or a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB).

[0383] Option 3-3: The beam of the candidate cell corresponds to a quasi co-location reference signal (QCL RS) in a configured transmission configuration indication state (TCI state) on the candidate cell; or

[0384] Option 3-4: The beam of the candidate cell corresponds to a quasi co-location reference signal (QCL RS) in a configured transmission configuration indication state (TCI state) on the candidate cell or a quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB).

[0385] In particular implementation, the transmission configuration indication state (TCI state) is a transmission configuration indication state for physical downlink control channel (PDCCH) and / or physical downlink shared channel (PDSCH) reception.

[0386] If the beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) and the quasi co-location reference signal (QCL RS) in Option 3-1 is a channel state information reference signal (CSI-RS), the beam of the candidate cell is determined by Option 3-2.

[0387] If the beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) and the quasi co-location reference signal (QCL RS) in Option 3-3 is a channel state information reference signal (CSI-RS), the beam of the candidate cell is determined by Option 3-4.

[0388] In some embodiments, the second processing unit 1101 further controls the terminal device to perform the following operations:

[0389] The network device configures the indication information for the terminal device, and the indication information indicates that the beam of the serving cell and / or the beam of the candidate cell of the event is configured by the network device and / or obtained by the terminal device from a transmission configuration indication state (TCI state).

[0390] In some embodiments, the second processing unit 1101 further controls the terminal device to perform the following operations:

[0391] The network device configures the association between the beam of the serving cell and / or the beam of the candidate cell and the event.

[0392] In some embodiments, the network device configures the association between the beams of the serving cell and / or the beams of the candidate cell and the event, including:

[0393] The network device configures a first identity or a first index for the beams of the serving cell and / or the beams of the candidate cell, and includes the first identity or the first index in the configuration of the event; or

[0394] The network device configures a second identity or a second index for the event, and includes the second identity or the second index in the configuration of the beams of the serving cell and / or the beams of the candidate cell; or

[0395] The network device configures a first identity or a first index for the beams of the serving cell and / or the beams of the candidate cell, a second identity or a second index for the event, and associates the first identity or the first index with the second identity or the second index through a third identity.

[0396] In some embodiments, the network device configures the event for the terminal device, including:

[0397] The network device configures the event based on the beams of the serving cell and / or the beams of the candidate cell per user equipment (UE) or medium access control (MAC) entity; or

[0398] The network device configures the event based on the beams of the serving cell and / or the beams of the candidate cell per frequency or band; or

[0399] The network device configures the event based on the beams of the serving cell and / or the beams of the candidate cell per layer 1 / layer 2 triggered mobility (LTM) channel state information (CSI) resource configuration identity or reference signal (RS) set.

[0400] In some embodiments, the second processing unit 1101 further controls the terminal device to perform the following operations:

[0401] The network device configures resources for the terminal device to perform scheduling request (SR).

[0402] The resource of the scheduling request (SR) is used for at least one of a resource request of a base station router (BSR), a bit forwarding router (BFR), and a listen before talk (LBT), and the resource of the scheduling request (SR) is used for a resource request of a media access control control element (MAC CE) including at least a layer 1 measurement result of a candidate cell.

[0403] It is worth noting that only the components or modules related to the present application are described above, but the present application is not limited thereto. The communication device 1100 of the embodiments of the present application can also include other components or modules, and the specific content of these components or modules can be referred to related technologies.

[0404] In addition, for the sake of simplicity, only the connection relationship or signal path between the components or modules is exemplarily shown in FIG. 11, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above components or modules can be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc.; the present application is not limited thereto.

[0405] The above embodiments are only exemplarily described, but the present application is not limited thereto, and appropriate modifications can be made on the basis of the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0406] Embodiments of the fifth aspect

[0407] The embodiments of the fifth aspect of the present application provide a communication system, which can include a network device and a terminal device.

[0408] FIG. 12 is a schematic diagram of an electronic device according to the embodiments of the fifth aspect. As shown in FIG. 12, the electronic device 1200 can correspond to the terminal device 102 or the network device 101 of FIG. 1, and the electronic device 1200 can include a processor 1210 and a memory 1220. The memory 1220 stores data and programs and is coupled to the processor 1210. It is worth noting that this figure is exemplary; other types of structures can also be used to supplement or replace this structure to achieve telecommunication functions or other functions.

[0409] For example, the processor 1210 can be configured to execute a program to implement the method in the first aspect embodiment and / or the method in the second aspect embodiment.

[0410] As shown in FIG. 12, the terminal device 1200 can further include a communication module 1230, an input unit 1240, a display 1250, and a power supply 1260. The functions of the above components are similar to those of the prior art, and will not be described here. It should be noted that the terminal device 1200 does not necessarily include all the components shown in FIG. 12, and the above components are not essential; in addition, the terminal device 1200 can also include components not shown in FIG. 12, and can refer to the prior art.

[0411] The embodiments of the present application also provide a computer program, which, when executed in a terminal device, causes the terminal device to perform the method in the first aspect embodiment.

[0412] The embodiments of the present application also provide a storage medium storing a computer program, which causes a terminal device to perform the method in the first aspect embodiment.

[0413] The embodiments of the present application also provide a computer program, which, when executed in a network device, causes the network device to perform the method in the second aspect embodiment.

[0414] The embodiments of the present application also provide a storage medium storing a computer program, which causes a network device to perform the method in the second aspect embodiment.

[0415] The apparatus and method described above in the present application can be realized by hardware, or by a combination of hardware and software. The present application relates to a computer readable program, which, when executed by a logic component, can enable the logic component to realize the apparatus or component described above, or to realize the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0416] The method / apparatus described in combination with the embodiments of the present application can be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figures and / or a combination of one or more functional block diagrams can correspond to each software module of the computer program flow, or to each hardware module. These software modules can correspond to each step shown in the figures, respectively. These hardware modules can be realized by, for example, fixing the software modules with a field programmable gate array (FPGA).

[0417] The software modules can reside in RAM, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. The storage medium can be coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium can be integral to the processor. The processor and the storage medium can reside in an ASIC. The software modules can be stored in a memory of the mobile terminal, or in a memory card that can be inserted into the mobile terminal. For example, if the device (e.g., mobile terminal) is equipped with a MEGA-SIM card or a large capacity flash memory device, the software modules can be stored in the MEGA-SIM card or the large capacity flash memory device.

[0418] One or more of the functional blocks described in the accompanying drawings and / or one or more combinations of the functional blocks can be implemented as a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any appropriate combination thereof, for performing the functions described in this application. One or more of the functional blocks described in the accompanying drawings and / or one or more combinations of the functional blocks can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0419] The application has been described in connection with certain embodiments. However, one of ordinary skill in the art will readily recognize from the disclosure herein that changes and modifications can be made thereto without departing from the scope of the present application. Accordingly, nothing in the present application should be construed as a limitation on the scope of the present application, but is intended to cover all possible modifications and equivalents.

[0420] In connection with the embodiments including the above embodiments, the following supplementary notes are also disclosed:

[0421] 1. A communication method applied to a terminal device, wherein the method comprises:

[0422] the terminal device performs event evaluation based on a serving cell beam and / or a candidate cell beam; and

[0423] when event-based layer 1 measurement reporting is triggered, the terminal device sends a measurement report to a network device, the measurement report comprising a layer 1 measurement result of a candidate cell;

[0424] The beam of the serving cell and / or the beam of the candidate cell is configured by the network device and / or obtained by the terminal device from a transmission configuration indication state (TCI state).

[0425] 2.The method of appendix 1, wherein the transmission configuration indication state (TCI state) is a transmission configuration indication state of a physical downlink control channel (PDCCH) and / or a physical downlink shared channel (PDSCH) reception.

[0426] 3.The method of appendix 1, wherein the beam of the candidate cell is configured by the network device, wherein

[0427] the beam of the candidate cell corresponds to one reference signal (RS) in one or more reference signals (RSs) configured by the network device for the candidate cell; or

[0428] the beam of the candidate cell is at least one best beam in a plurality of beams configured by the network device for the candidate cell, or the beam of the candidate cell corresponds to at least one reference signal (RS) with the best measurement result in a plurality of reference signals (RSs) configured for the candidate cell for layer 1 measurement; or

[0429] the beam of the candidate cell corresponds to N reference signals (RSs) in a plurality of reference signals (RSs) configured by the network device for the candidate cell for layer 1 measurement, wherein N >= 2.

[0430] 4.The method of appendix 3, wherein the one or more reference signals (RSs) configured by the network device for the candidate cell are configured for layer 1 measurement, or configured for layer 1 / layer 2 triggered mobility (LTM), or configured for early synchronization, or configured for mobility.

[0431] 5.The method of appendix 1, wherein

[0432] the terminal device receives indication information of the network device, the indication information indicating that the beam of the serving cell and / or the beam of the candidate cell used in the event evaluation is configured by the network device and / or obtained by the terminal device from a transmission configuration indication state (TCI state).

[0433] 6.The method of appendix 1, wherein

[0434] in a case where the network device configures a reference signal (RS) for layer 1 measurement for the serving cell and / or the candidate cell, the beam of the serving cell and / or the beam of the candidate cell used in the event evaluation is configured by the network device; and / or

[0435] In a case where the network device does not configure a reference signal (RS) for layer 1 measurement for the serving cell and the candidate cell, the beam of the serving cell and / or the beam of the candidate cell used by the event evaluation is obtained by the terminal device from a transmission configuration indication state (TCI state).

[0436] 7. The method of the appended note 1, wherein the beam of the serving cell and / or the beam of the candidate cell is associated with the configuration of the event.

[0437] 8. The method of the appended note 7, wherein,

[0438] the configuration of the beam of the serving cell and / or the beam of the candidate cell comprises a first identity or a first index, and the first identity or the first index is included in the configuration of the event; or

[0439] the configuration of the event comprises a second identity or a second index, and the second identity or the second index is included in the configuration of the beam of the serving cell and / or the beam of the candidate cell; or

[0440] the configuration of the beam of the serving cell and / or the beam of the candidate cell comprises a first identity or a first index, the configuration of the event comprises a second identity or a second index, and the first identity or the first index is associated with the second identity or the second index by a third identity.

[0441] 9. The method of the appended note 8, wherein,

[0442] the first identity or the first index and the type of the event are included in the measurement report; or

[0443] the second identity or the second index and the identity of the reference signal (RS) corresponding to the beam of the serving cell and / or the beam of the candidate cell are included in the measurement report; or

[0444] the third identity is included in the measurement report.

[0445] 10. The method of the appended note 8, wherein the first identity or the first index comprises at least one of the following information:

[0446] a transmission configuration indication state index (TCI state index);

[0447] a resource configuration ID of layer 1 / layer 2 triggered mobility (LTM) channel state information (CSI);

[0448] a bitmap.

Claims

1. A communication apparatus applied to a terminal device, wherein, The apparatus comprises a first processing unit, which controls the terminal device to perform the following operations: The terminal device performs event evaluation based on a beam of a serving cell and / or a beam of a candidate cell; And When an event-based layer 1 measurement report is triggered, the terminal device sends a measurement report to a network device, and the measurement report comprises a layer 1 measurement result of a candidate cell; Wherein, the beam of the serving cell and / or the beam of the candidate cell is configured by the network device and / or obtained by the terminal device from the transmission configuration indication state (TCI state).

2. The apparatus of claim 1, wherein, The beam of the serving cell is obtained by the terminal device from the transmission configuration indication state (TCI state), wherein The beam of the serving cell corresponds to a quasi co-location reference signal (QCL RS) in a transmission configuration indication state (TCI state) indicated on the serving cell or a quasi co-location reference signal (QCL RS) in a current transmission configuration indication state (TCI state); or The beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) that has a quasi co-location (QCL) relationship or is quasi co-located (QCLed) with a quasi co-location reference signal (QCL RS) in a transmission configuration indication state (TCI state) indicated on the serving cell or a quasi co-location reference signal (QCL RS) in a current transmission configuration indication state (TCI state).

3. The apparatus of claim 1, wherein, The beam of the serving cell is obtained by the terminal device from the transmission configuration indication state (TCI state), wherein The beam of the serving cell corresponds to a quasi co-location reference signal (QCL RS) in an activated or configured transmission configuration indication state (TCI state) on the serving cell; or The beam of the serving cell corresponds to a synchronization signal and physical broadcast channel block (SSB) that has a quasi co-location (QCL) relationship or is quasi co-located (QCLed) with a quasi co-location reference signal (QCL RS) in an activated or configured transmission configuration indication state (TCI state) on the serving cell.

4. The apparatus of claim 1, wherein, The beam of the serving cell is configured by the network device, wherein The beam of the serving cell corresponds to one reference signal (RS) in one or more sets of reference signals (RSs) for layer 1 measurement configured by the network device for the serving cell or a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with the one reference signal (RS). The beam of the serving cell is configured by the network device, wherein 5. The apparatus of claim 1, wherein, The beam of the serving cell is the best beam in one or more beams configured by the network device for the serving cell; or The beam of the serving cell corresponds to a reference signal (RS) with the best measurement result in a plurality of reference signals (RSs) for layer 1 measurement configured for the serving cell or a synchronization signal and physical broadcast channel block (SSB) that is quasi co-located (QCLed) with the best reference signal (RS). ​ 6. The apparatus of claim 1, wherein, The beam of the candidate cell is obtained by the terminal device from a transmission configuration indication state (TCI state), wherein The beam of the candidate cell corresponds to a quasi co-location reference signal (QCL RS) in activated transmission configuration indication state(s) (TCI state(s)) on the candidate cell; or The beam of the candidate cell corresponds to a quasi co-location (QCL) relationship or quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) with a quasi co-location reference signal (QCL RS) in activated transmission configuration indication state(s) (TCI state(s)) on the candidate cell.

7. The apparatus of claim 1, wherein, The beam of the candidate cell is obtained by the terminal device from a transmission configuration indication state (TCI state), wherein The beam of the candidate cell corresponds to a quasi co-location reference signal (QCL RS) in configured transmission configuration indication state(s) (TCI state(s)) on the candidate cell; or The beam of the candidate cell corresponds to a quasi co-location (QCL) relationship or quasi co-located (QCLed) synchronization signal and physical broadcast channel block (SSB) with a quasi co-location reference signal (QCL RS) in configured transmission configuration indication state(s) (TCI state(s)) on the candidate cell.

8. The apparatus of claim 1, wherein, The terminal device performs event evaluation based on the beam of the serving cell and / or the beam of the candidate cell, comprising: The terminal device performs event evaluation based on the beam of the serving cell and / or the beam of the candidate cell for each user equipment (UE) or medium access control (MAC) entity; or The terminal device performs event evaluation based on the beam of the serving cell and / or the beam of the candidate cell for each frequency or band (per frequency (band)); or For each layer 1 / layer 2 triggered mobility (LTM) channel state information (CSI) resource configuration ID or reference signal (RS) set, the terminal device performs event evaluation based on the beam of the serving cell and / or the beam of the candidate cell. The terminal device sends a measurement report to a network device, comprising:

9. The apparatus of claim 1, wherein, When the terminal device has sufficient resources, the terminal device generates a medium access control control element (MAC CE) including at least layer 1 measurement results of the candidate cell; or When the terminal device has no resources or insufficient resources, the terminal device triggers a scheduling request (SR). The operations further comprise:

10. The apparatus of claim 1, wherein, When at least one of the following conditions is met, the terminal device cancels the measurement report or stops sending the measurement report to the network device: The measurement report including the beam or beam group of the candidate cell has been successfully sent; An event exit condition is met; The beam or beam group of the serving cell and / or the candidate cell is reconfigured; The beam of the serving cell is changed. ​ 11. The apparatus of claim 1 or 10, wherein, The event includes: a beam of a serving cell becomes better than an absolute threshold; a beam of a serving cell becomes worse than an absolute threshold; a beam of a candidate cell becomes better than a beam of a serving cell by an offset; a beam of a candidate cell becomes better than an absolute threshold; a beam of a serving cell becomes worse than a first absolute threshold and a beam of a candidate cell becomes better than a second absolute threshold.

12. A communication apparatus applied to a network device, wherein, The apparatus includes a second processing unit that controls the network device to perform the following operations: The network device configures an event and / or a beam for a terminal device; The network device receives a measurement report or a scheduling request (SR) sent by the terminal device based on a trigger of an event, wherein the measurement report includes a layer 1 measurement result of a candidate cell; The evaluation of the event is based on a beam of a serving cell and / or a beam of a candidate cell, which is configured by the network device and / or obtained by the terminal device from a transmission configuration indication state (TCI state). The network device configures a beam for the terminal device, including:

13. The apparatus of claim 12, wherein, The network device configures one or more reference signals (RSs) for layer 1 measurement for the serving cell. The network device configures a beam for the terminal device, including:

14. The apparatus of claim 12, wherein, The network device configures one or more reference signals (RSs) for the candidate cell; or The network device configures a number N for the candidate cell, wherein N reference signals (RSs) in the one or more reference signals (RSs) for layer 1 measurement correspond to the beam of the candidate cell of the event, and N >= 2. The one or more reference signals (RSs) are configured for layer 1 measurement, or for layer 1 / layer 2 triggered mobility (LTM), or for early synchronization, or for mobility.

15. The apparatus of claim 14, wherein, The operations further include:

16. The apparatus of claim 12, wherein, The network device configures indication information for the terminal device, which indicates that the beam of the serving cell and / or the beam of the candidate cell of the event is configured by the network device and / or obtained by the terminal device from a transmission configuration indication state (TCI state). The operations further include:

17. The apparatus of claim 12, wherein, The network device configures an association between the beam of the serving cell and / or the beam of the candidate cell and the event. The network device configures an association between the beam of the serving cell and / or the beam of the candidate cell and the event, including:

18. The apparatus of claim 17, wherein, The network device configures a first identifier or a first index for the beam of the serving cell and / or the beam of the candidate cell, and includes the first identifier or the first index in the configuration of the event; or The network device configures a second identifier or a second index for the event, and includes the second identifier or the second index in the configuration of the beam of the serving cell and / or the beam of the candidate cell; or ​ The network device configures a first identity or a first index for a beam of the serving cell and / or a beam of the candidate cell, configures a second identity or a second index for the event, and associates the first identity or the first index with the second identity or the second index through a third identity.

19. The apparatus of claim 12, wherein, The network device configures an event for a terminal device, including: The network device configures an event based on a beam of a serving cell and / or a beam of a candidate cell is configured per user equipment (UE) or medium access control (MAC) entity; or The network device configures an event based on a beam of a serving cell and / or a beam of a candidate cell is configured per frequency or band (per frequency (band)); or The network device configures an event based on a beam of a serving cell and / or a beam of a candidate cell is configured per resource configuration ID or set of reference signals (RS) of a layer 1 / layer 2 triggered mobility (LTM) channel state information (CSI).

20. The apparatus of claim 12, wherein, The operations further include: The network device configures a resource of the scheduling request for the terminal device.

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