Method executed by user equipment, and user equipment

Abstract

The present invention provides a method executed by a user equipment (UE) and a UE. The method executed by the UE comprises: the UE receives system information and / or RRC dedicated signaling sent by a network, wherein the system information and / or RRC dedicated signaling comprises an SCell configuration, and / or a serving cell configuration, and / or an NR measurement object configuration; the UE determines, on the basis of the SCell configuration, whether an SCell is an SSB-less SCell; and the UE selects, for the SSB-less SCell, at least one reference cell satisfying a first condition, to acquire a timing reference and an AGC resource for the SSB-less SCell, and determine an activation delay of the SSB-less Scell.

Description

Methods executed by user equipment and user equipment Technical Field

[0001] This invention relates to the field of wireless communication technology, and more specifically, to a method for network power saving performed by a user equipment and a corresponding user equipment. Background Technology

[0002] Network energy conservation helps reduce environmental impact and save operator costs. Networks typically need to periodically transmit Service Buffers (SSBs) to enable UEs to synchronize with cells and measure beam quality and cell quality. Periodic SSB transmission consumes power, especially under low system load, resulting in wasted network power. For these reasons, the 3rd Generation Partnership Project (3GPP) approved the NES enhancement work item for Release 19 at the RAN plenary meeting, the details of which can be found in non-patent literature: RP-234065 WID: Enhancements of network energy savings for NR. This work item includes the ability for the network to stop transmitting SSBs or lengthen the SSB transmission period for SCells under low system load, and to dynamically trigger SSB transmission or use shorter SSB transmission periods based on system load changes and UE service activity, thereby achieving network energy conservation. Summary of the Invention

[0003] A method performed by a user equipment (UE) includes:

[0004] The UE receives system information and / or RRC proprietary signaling sent by the network.

[0005] The system information and / or RRC proprietary signaling include SCell configuration, and / or serving cell configuration, and / or NR measurement object configuration.

[0006] The UE determines whether the SCell is an SSB-less Scell ​​based on the SCell configuration.

[0007] The UE selects at least one reference cell that satisfies the first condition for the SSB-less SCell, in order to obtain timing reference and AGC resources for the SSB-less SCell, and to determine the activation delay of the SSB-less SCell.

[0008] One of the preferred options is:

[0009] The SCell configuration includes an SSB configuration, and / or an SMTC configuration, and / or a reference cell configuration, wherein the reference cell configuration is used to indicate the cell from which the inter-band SSB-less SCell provides the timing reference and the AGC resources.

[0010] One of the preferred options is:

[0011] If the SCell is not configured with the SSB configuration and / or SMTC configuration, then the SCell is an SSB-less Scell.

[0012] One of the preferred options is:

[0013] The first condition includes:

[0014] The cell is configured with always-on SSB.

[0015] The cell is not only configured with Type 1 on-demand SSB.

[0016] The cell is not a Type 1 on-demand SSB SCell.

[0017] The cell has an active on-demand SSB, or the cell's on-demand SSB is active.

[0018] The SSB of the cell is active, or the cell has an active SSB.

[0019] One of the preferred options is:

[0020] The type 1 on-demand SSB refers to an on-demand SSB that does not need to be configured together with an always-on SSB.

[0021] The type-one on-demand SSB SCell refers to an SCell configured with type-one on-demand SSB.

[0022] One of the preferred options is:

[0023] The serving cell configuration includes SSB absolute frequency information cells and / or subcarrier spacing information cells, and the NR measurement object configuration includes SSB frequency information cells and / or SSB subcarrier spacing information cells.

[0024] One of the preferred options is:

[0025] The UE selects the serving cell to obtain the SSB index of neighboring cells based on the serving cell configuration and the NR measurement object configuration.

[0026] The absolute SSB frequency of the serving cell is equal to the SSB frequency of the NR measurement object, the subcarrier spacing of the serving cell is equal to the SSB subcarrier spacing of the NR measurement object, and the serving cell satisfies at least one of the first conditions.

[0027] A user equipment, comprising:

[0028] Processor; and

[0029] Memory, which stores instructions

[0030] The instructions, when executed by the processor, perform the method according to any one of claims 1 to 7. Attached Figure Description

[0031] Figure 1 is a schematic diagram of method one executed by the UE according to one or more embodiments.

[0032] Figure 2 is a schematic diagram of method two executed by the UE according to one or more embodiments.

[0033] Figure 3 is a schematic diagram of method three executed by the UE according to one or more embodiments.

[0034] Figure 4 is a simplified structural block diagram of the user equipment (UE) involved in this invention. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the present invention should not be limited to the specific embodiments described below. Furthermore, for the sake of simplicity, detailed descriptions of well-known technologies not directly related to the present invention have been omitted to prevent confusion in understanding the present invention.

[0036] The following describes some of the terms involved in this invention. For the specific meanings of these terms, please refer to the latest 3GPP standard specifications.

[0037] UE: User Equipment

[0038] NR: New Radio, a next-generation wireless technology

[0039] AS: Access Stratum

[0040] MAC: Medium Access Control

[0041] MAC CE: MAC control element

[0042] RRC: Radio Resource Control

[0043] RRC_CONNECTED: RRC connection state

[0044] RRC_INACTIVE: RRC inactive state

[0045] RRC_IDLE: RRC idle state

[0046] RAN: Radio Access Network, Wireless Access Layer

[0047] PDCCH: Physical downlink control channel

[0048] PUCCH: Physical Uplink Control Channel

[0049] PUSCH: Physical Uplink Shared Channel

[0050] PRACH: Physical Random Access Channel

[0051] PBCH: Physical broadcast channel

[0052] SFN: System Frame Number

[0053] PDU: Protocol Data Unit

[0054] SSB: SS / PBCH block, Synchronization Signal / Physical Broadcast Channel Block

[0055] CSI-RS: Channel Status Information-Reference Signal

[0056] DCI: Downlink Control Information

[0057] RNTI: Radio Network Temporary Identifier

[0058] C-RNTI: Cell RNTI, Cell RNTI

[0059] P-RNTI: Paging RNTI (Paging RNTI)

[0060] RA-RNTI: Random Access RNTI

[0061] SI-RNTI: System Information RNTI

[0062] RSRP: Reference Signal Received Power

[0063] RSRQ: Reference Signal Received Quality

[0064] SpCell: Special Cell, including PCCell and PSCell.

[0065] SCell: Secondary Cell

[0066] CA: Carrier Aggregation

[0067] DC: Dual Connectivity

[0068] MCG: Master Cell Group

[0069] SCG: Secondary Cell Group

[0070] PCell: Primary Cell

[0071] PSCell: Primary SCG Cell (SCG Main Cell)

[0072] MIB: Master Information Block

[0073] DRX: Discontinuous Reception

[0074] SIB: System Information Block

[0075] gNB: the next generation Node B, next-generation base station

[0076] RLF: Radio Link Failure.

[0077] SN: Sequence Number

[0078] CN: Core Network

[0079] UL-SCH: Uplink Shared Channel

[0080] NES: Network Energy Saving

[0081] OSI: Other System Information

[0082] SI: System Information

[0083] L3: Layer 3

[0084] BFD: Beam Failure Detection

[0085] BFR: Beam Failure Recovery

[0086] AGC: Automatic Gain Control

[0087] SMTC: SS / PBCH block Measurement Timing Configuration.

[0088] FR: Frequency Range

[0089] TRS: Tracking Reference Signal

[0090] QCL: Quasi Co-Location

[0091] In this invention, the network (or NW), base station (or gNB or eNB), and RAN can be used interchangeably. The network can be a Long Term Evolution (LTE) network, a New Radio Access Technology (NR) network, an enhanced Long Term Evolution (eLTE) network, or other networks defined in subsequent 3GPP evolution versions.

[0092] In this invention, User Equipment (UE) can refer to a device that supports network power saving, a device that supports enhanced network power saving, a device with (enhanced) network power saving capabilities, a device that supports on-demand SSB, a device with on-demand SSB capabilities, a device with on-demand SSB measurement capabilities, or other types of NR or LTE devices.

[0093] In this invention, the terms "feedback", "submit", "report", "send", "transmit or transport", "inform", "indicate", and "provide" can be used interchangeably.

[0094] In this invention, the terms "use", "be available", "apply", "implement", "enable", "activate", "perform", and "do" can be used interchangeably.

[0095] In this invention, the terms "associate", "correspond", and "map" can be used interchangeably.

[0096] In this invention, receiving, detecting, monitoring, acquiring, and deriving are interchangeable.

[0097] In this invention, "deactivate (non-active or deactive / deactivate)," "stop," "stop," "exit," and "de-enable" can be used interchangeably.

[0098] In this invention, "activate", "start", "enable", "use", "enter", and "wake up" can be used interchangeably.

[0099] In this invention, "time" can be time, duration, period, time period, etc.

[0100] In this invention, "effective" and "available" can be used interchangeably.

[0101] In this invention, "signaling" and "message" can be used interchangeably.

[0102] In this invention, "on-demand SSB" is just an example name. Other names for SSB that indicate transmission is not continuous but triggered on demand can replace the name "on-demand SSB".

[0103] In this invention, "physical layer" and "layer one (L1)" can be used interchangeably.

[0104] In this invention, "deactivate on-demand SSB" and "consider the state of on-demand SSB to be deactivated" can be used interchangeably, as can "activate on-demand SSB" and "consider the state of on-demand SSB to be activated".

[0105] In this invention, "always-on SSB", "legacy SSB", "normal SSB", and "non-on-demand SSB" can be used interchangeably.

[0106] It should be noted that in this specification, the two terms connected by "and", "or", or "and / or" may represent different ways of expressing the same meaning in different application scenarios. There may be a relationship of inclusion between the two terms, and they do not necessarily refer to completely different content.

[0107] The related technologies of the present invention are described below.

[0108] NR is divided into two frequency ranges (FR): FR1, usually referred to as low-frequency 5G; and FR2, usually referred to as high-frequency 5G, also known as millimeter wave.

[0109] With CA configured, a UE's serving cell consists of one PCell and one or more SCells. Adding, modifying, and deleting SCells is configured via RRC messages. When adding an SCell, its initial state (activated or deactivated) can be configured simultaneously. After SCell configuration, the network dynamically activates / deactivates the SCell via MAC CE based on the UE's service requirements and network load. When an SCell is activated or deactivated, beam and / or cell quality measurements are required.

[0110] With DC configured, the UE is configured with MCG and SCG. For MCG, if CA is configured, the primary cell in the MCG is also called PCell, and the secondary cell is still called SCell. For SCG, if CA is configured, the primary cell is called PSCell, and the secondary cell is still called SCell. The network can configure the deactivation state of SCG via RRC messages. When SCG is deactivated, all SCell(s) of SCG must also be deactivated.

[0111] Generally, the network periodically transmits SSBs, which can be called always-on SSBs. For deactivated cells, the network also periodically transmits SSBs. UEs can use SSBs for cell time-frequency synchronization, beam quality measurement, and cell quality measurement. To save network energy, the network may lengthen the SSB transmission period or stop transmitting SSBs altogether, but this may affect the UE's time-frequency synchronization and measurement. To solve this problem, on-demand SSBs are introduced. Based on system load changes and UE service conditions, the network activates on-demand SSBs as needed. This means the network switches from not transmitting SSBs to transmitting on-demand SSBs, or from transmitting SSBs with longer periods to transmitting on-demand SSBs (usually with shorter transmission periods), or from transmitting longer periods of SSBs to simultaneously transmitting both longer-period SSBs and on-demand SSBs (usually with shorter transmission periods).

[0112] A cell that employs (enhanced) network power saving, or a cell that is configured with on-demand SSB, or a cell that supports on-demand SSB, or a cell that supports (enhanced) network power saving, or a cell that enables on-demand SSB, can be called an on-demand SSB cell. If the cell is an SCell, then the cell can be called an on-demand SSB SCell.

[0113] BFD

[0114] Beam Failure Detection (BFD) is a procedure where the UE detects beam failures based on reference signals configured by the network. The BFD procedure can be performed on each Serving Cell, including SpCell and SCell. If an SCell is deactivated, the UE does not need to perform BFD on that SCell. The reference signal configured for the BFD procedure can be SSB or CSI-RS. The UE performs the BFD procedure on the active downlink BWP.

[0115] Reference Community

[0116] A SCell without an configured SSB is called an SSB-less Cell. For intra-band or inter-band CA SCells, the UE can use other serving cells as reference cells to obtain timing references and AGC resources.

[0117] For neighboring cell measurements, depending on the network configuration, the UE can use a serving cell with the same frequency and subcarrier spacing as the neighboring cell as a reference cell, and use the timing of the reference cell to obtain the SSB index of the neighboring cell, and then perform neighboring cell measurements.

[0118] QCL

[0119] Quasi-co-location (QCL) is a quasi-co-location relationship between antenna ports that describes the association of wireless channel characteristics between two antenna ports. There are four types of QCL: Type A, Type B, Type C, and Type D, corresponding to different types of quasi-co-location relationships between downlink reference signals and between ports.

[0120] This invention discusses how a UE can determine a reference cell so that, while maintaining network energy efficiency, the UE can correctly identify the reference cell, thereby obtaining accurate timing information for data transmission and neighbor cell measurements, and avoiding any impact on UE service performance.

[0121] Example

[0122] Figure 1 is a schematic diagram of method one executed by the UE according to one or more embodiments. The UE can execute one or more steps in Figure 1. Figure 1 includes steps S101 to S103.

[0123] Optionally, in step S101, the UE receives system information and / or RRC-specific signaling (e.g., RRCReconfiguration RRC reconfiguration message, RRCResume RRC recovery message) sent by the network. Optionally, the system information and / or RRC-specific signaling includes SCell configuration for configuring SCell parameters. Optionally, the SCell configuration includes SSB configuration, and / or SMTC configuration, and / or reference cell configuration. Optionally, the system information and / or RRC-specific signaling further includes on-demand SSB configuration.

[0124] Optionally, the SSB configuration in the SCell configuration includes (or refers to) an SSB absolute frequency (absoluteFrequencySSB) information element, which indicates the frequency of the SSB used by the serving cell (or the SCell). Optionally, the SSB absolute frequency is included in the downlink frequency information (FrequencyInfoDL), which provides basic parameters of the downlink carrier and basic parameters of transmission on the downlink carrier, and is included in the SCell configuration. Alternatively, the SSB absolute frequency is included in the ServingCellConfigCommon, which is used to configure the cell parameters of the UE's serving cell, and is included in the SCell configuration.

[0125] Optionally, the SMTC configuration is used to configure the measurement timing configuration (of the SCell), such as SSB period, offset, etc.

[0126] Optionally, the reference cell configuration indicates a reference cell, which is a cell that provides timing reference and AGC resources for the inter-frequency band SSB-less SCell. If the reference cell is an SCell, then the reference cell is an active SCell, and the reference cell satisfies at least one of the first conditions.

[0127] Optionally, the first condition includes at least one of the following:

[0128] - The cell is configured with always-on SSB;

[0129] - The cell is not only configured with on-demand SSB;

[0130] - The cell is not only configured with Type 1 on-demand SSB;

[0131] -The cell is configured with a Type II on-demand SSB;

[0132] - The cell in question is a type 2 on-demand SSB SCell;

[0133] - The cell in question is not a type-one on-demand SSB SCell;

[0134] - The cell has an active on-demand SSB, or the on-demand SSB of the cell is active;

[0135] - The SSB of the cell is active, or the cell has an active SSB.

[0136] Optionally, the Type 1 on-demand SSB SCell is not configured with always-on SSB, while the Type 2 on-demand SSB SCell is configured with always-on SSB. For the Type 1 on-demand SSB SCell, only on-demand SSB is configured; when the on-demand SSB state is deactivated, there is no (periodic) SSB transmission on the SCell. For the Type 2 on-demand SSB SCell, both always-on SSB and on-demand SSB are configured; when the on-demand SSB state is deactivated, there is still always-on SSB (periodic) transmission on the SCell.

[0137] Alternatively, on-demand SSBs can be divided into two types: Type 1 on-demand SSBs do not need to be configured with always-on SSBs, while Type 2 on-demand SSBs need to be configured with always-on SSBs. In this case, a Type 1 on-demand SSB SCell refers to a SCell configured with a Type 1 on-demand SSB, and a Type 2 on-demand SSB SCell refers to a SCell configured with a Type 2 on-demand SSB.

[0138] Optionally, the always-on SSB configuration and / or on-demand SSB configuration are obtained by the UE from system information or RRC proprietary signaling containing the relevant configuration received from the network side.

[0139] Optionally, in step S102, the UE determines whether the SCell is an SSB-less SCell based on the SCell configuration. Optionally, if the SCell is not configured with SSB configuration and / or SMTC configuration, or if the SSB absolute frequency information element and / or SMTC configuration information element are not present in the SCell configuration, then the SCell is an SSB-less SCell.

[0140] Optionally, in step S103, the UE selects a reference cell for the SSB-less SCell to obtain timing reference and AGC resources for the SSB-less SCell, and to determine the SSB-less SCell activation delay (T). activation_time ).

[0141] Optionally, the UE determines at least one of the following conditions:

[0142] - A SCell belonging to FR1 is being activated;

[0143] - The SCell being activated is an SSB-less SCell;

[0144] - There is at least one active serving cell in the FR1 band and the SCell is continuous / adjacent;

[0145] - The TRS(s) of the (active) SCell and the SSB(s) of the active serving cell are quasi-co-addressable in QCL-Type C;

[0146] - The activated serving cell satisfies at least one of the first conditions;

[0147] - If the activated serving cell is an SCell, then the activated serving cell satisfies at least one of the first conditions.

[0148] Optionally, if at least one of the above conditions is met, the UE selects the activated serving cell as the reference cell, and / or determines the SCell activation delay (T). activation_time The activation time is 3 milliseconds, meaning the activation operation of the (active) SCell is completed within 3 milliseconds.

[0149] Optionally, the UE is a UE that supports at least one of the following:

[0150] -UE supports SSB-less SCell;

[0151] - The UE supports scellWithoutSSB (SCell without SSB). scellWithoutSSB is used to define whether the UE supports the configuration of SCell without transmitting SSB.

[0152] -UE supports on-demand SSB SCell (or on-demand SSB);

[0153] - The UE supports Type 1 on-demand SSB SCell (or Type 1 on-demand SSB).

[0154] Figure 2 is a schematic diagram of Method 2 executed by the UE according to one or more embodiments. The UE can execute one or more steps in Figure 2. Figure 2 includes steps S201 to S202.

[0155] Optionally, in step S201, the UE receives system information and / or RRC-specific signaling (e.g., RRCReconfiguration RRC reconfiguration message, RRCResume RRC recovery message) sent by the network. Optionally, the system information and / or RRC-specific signaling includes serving cell configuration and / or NR measurement object configuration.

[0156] Optionally, the serving cell configuration includes a serving cell common configuration (ServingCellConfigCommon), which includes an SSB absolute frequency (SSB) information cell and / or a subcarrier spacing (subcarrierSpacing) information cell. Optionally, the SSB absolute frequency is used to indicate the frequency of the SSB used by the serving cell. Optionally, the subcarrier spacing is used to indicate the subcarrier spacing of the SSB used by the serving cell.

[0157] Optionally, the NR measurement object configuration includes SSB frequency (ssbFrequency) information cells, and / or SSB subcarrier spacing (ssbSubcarrierSpacing) information cells, and / or derivedSSB-IndexFromCell information cells. Optionally, ssbFrequency is used to indicate the frequency of the SSB associated with the NR measurement object. Optionally, ssbSubcarrierSpacing is used to indicate the subcarrier spacing of the SSB associated with the NR measurement object. Optionally, when derivedSSB-IndexFromCell is set to TRUE, the UE assumes that cells(s) on the same frequency carrier are SFN and frame boundary aligned.

[0158] Optionally, in step S202, the UE determines whether to use the serving cell to obtain the SSB index of the neighboring cell based on the serving cell configuration and / or NR measurement object configuration. In other words, the UE determines whether to use the serving cell as a reference cell for neighboring cell measurement.

[0159] Optionally, the UE determines at least one of the following conditions:

[0160] -deriveSSB-IndexFrom Cell is set to TRUE;

[0161] - The UE is configured with a serving cell, wherein the absoluteFrequencySSB in the ServingCellConfigCommon of the serving cell is equal to (or the same as) the ssbFrequency in the NR measurement object, and the subcarrierSpacing in the ServingCellConfigCommon is equal to (or the same as) the ssbSubcarrierSpacing in the NR measurement object.

[0162] -The serving cell satisfies at least one of the first conditions;

[0163] - If the serving cell is an SCell, the serving cell satisfies at least one of the first conditions.

[0164] Optionally, if at least one of the above conditions is met, the UE uses the timing of the serving cell to obtain the SSB index of the neighboring cell.

[0165] Figure 3 is a schematic diagram of method three executed by the UE according to one or more embodiments. The UE can execute one or more steps in Figure 3. Figure 3 includes steps S301 to S303.

[0166] Optionally, in step S301, the UE receives an RRC message sent by the network, such as an RRCReconfiguration message or an RRCResume message.

[0167] Optionally, the RRC message includes an on-demand SSB configuration. Optionally, the on-demand SSB configuration includes an on-demand SSB initial state indicator, used to indicate the initial state (active or deactivated) of the on-demand SSB, or the initial state (active or deactivated) of the on-demand SSB corresponding to the SSB frequency point / or SSB index / or SCell (e.g., represented by ServCellIndex).

[0168] Optionally, the RRC message further includes a set of BFD reference signals (one or two) for the serving cell. Optionally, the set of BFD reference signals includes one or more reference signal configurations (hereinafter referred to as "BFD reference signals") used for BFD procedures or beam link monitoring. Optionally, the BFD reference signal configuration includes at least one of the following information:

[0169] - The SSB index corresponding to the reference signal, or the CSI-RS index, or the on-demand SSB index;

[0170] - Reference signal type: SSB, or CSI-RS, or on-demand SSB;

[0171] - Reference signal on-demand SSB indicator, used to indicate whether the reference signal is on-demand SSB.

[0172] Optionally, in step S302, the UE receives an on-demand SSB activation / deactivation indication sent by the network. Compared to the on-demand SSB initial state indication in step S301, the on-demand SSB activation / deactivation indication dynamically activates / deactivates the on-demand SSB after it has been configured. Optionally, the on-demand SSB activation / deactivation indication is included in an RRC message (e.g., RRCReconfiguration), and / or a MAC CE, and / or a physical layer DCI. The UE activates / deactivates the on-demand SSB according to the on-demand SSB activation / deactivation indication.

[0173] Optionally, in step S303, the UE performs relevant operations on the BFD process.

[0174] Optionally, for each serving cell, if the serving cell is configured with two BFD reference signal sets, the UE determines at least one of the following conditions:

[0175] -The serving cell is SCell;

[0176] -The serving cell satisfies at least one of the second conditions;

[0177] - The reference signals in the BFD reference signal set of the serving cell are (or contain, or are all, or are only) on-demand SSBs, and / or the on-demand SSBs are type one on-demand SSBs, and / or the on-demand SSBs are deactivated (or deactivated).

[0178] - The BFD reference signal type is set to ssb, or the BFD reference signal is an SSB index;

[0179] - The reference signal for beam failure detection associated with a BFD reference signal set of the serving cell is deactivated.

[0180] Optionally, if at least one of the above conditions is met, the UE performs at least one of the following operations:

[0181] - It is assumed that the BFD reference signal set does not require the execution of the BFD process;

[0182] - Stop the BFD process of the BFD reference signal set;

[0183] - Instructs lower layers to stop the BFD process of the BFD reference signal set;

[0184] - Set the beam failure indicator counter (BFI_COUNTER) of the BFD reference signal set to 0;

[0185] - It is assumed that the beam failure recovery process of the BFD reference signal set has been successfully completed;

[0186] - Cancel the already triggered beam failure recovery (BFR) of the BFD reference signal set.

[0187] Alternatively, for each serving cell, if the serving cell is not configured with two BFD reference signal sets (i.e., only one BFD reference signal set is configured, or no BFD reference signal set is configured), the UE determines at least one of the following conditions:

[0188] -The serving cell is SCell;

[0189] -The serving cell satisfies at least one of the second conditions;

[0190] - The BFD reference signal of the serving cell is (or contains, or is all, or is only) an on-demand SSB, and / or the on-demand SSB is a type-one on-demand SSB, and / or the on-demand SSB is deactivated (or deactivated).

[0191] - The BFD reference signal type is set to ssb, or the BFD reference signal is an SSB index;

[0192] - The reference signal associated with the serving cell for beam failure detection is deactivated.

[0193] Optionally, if at least one of the above conditions is met, the UE performs at least one of the following operations:

[0194] - It is assumed that the serving cell does not need to perform the BFD procedure;

[0195] - Stop the BFD process of the serving cell;

[0196] - Instruct lower layers to stop the BFD process of the serving cell;

[0197] - Set the beam failure indicator counter (BFI_COUNTER) of the serving cell to 0;

[0198] - It is believed that the beam failure recovery process was successfully completed;

[0199] - Cancel the beam failure recovery (BFR) that has been triggered for the serving cell.

[0200] Optionally, the second condition includes at least one of the following:

[0201] - The cell is not configured with always-on SSB;

[0202] - The cell is only configured with on-demand SSB;

[0203] - The cell is only configured with Type 1 on-demand SSB;

[0204] - The cell in question is a type one on-demand SSB SCell;

[0205] - The cell does not have an active on-demand SSB, or the cell's on-demand SSB is deactivated;

[0206] - The SSB of the cell is deactivated, or the cell has no activated SSB.

[0207] Unless otherwise specified, the order of judgments and operations in this embodiment is irrelevant; that is, the order of judgments and operations can be interchanged.

[0208] Figure 4 is a simplified structural block diagram of the user equipment (UE) involved in this invention. As shown in Figure 4, the user equipment UE 400 includes a processor 401 and a memory 402. The processor 401 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 402 may include, for example, volatile memory (such as random access memory, RAM), a hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory. Program instructions are stored on the memory 402. When executed by the processor 401, these instructions can perform the methods described in detail in this invention performed by the user equipment.

[0209] A program running on a device according to the invention can be a program that enables a computer to perform the functions of embodiments of the invention by controlling a central processing unit (CPU). The program, or the information processed by the program, can be temporarily stored in volatile memory (such as random access memory, RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory systems.

[0210] Programs used to implement the functions of the various embodiments of the present invention can be recorded on a computer-readable recording medium. The corresponding functions can be implemented by causing a computer system to read and execute the programs recorded on the recording medium. The term "computer system" here can refer to a computer system embedded in the device, and may include an operating system or hardware (such as peripheral devices). "Computer-readable recording medium" can be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a short-time dynamic storage program recording medium, or any other computer-readable recording medium.

[0211] Various features or functional modules of the devices used in the above embodiments can be implemented or executed by circuits (e.g., monolithic or multi-chip integrated circuits). Circuits designed to perform the functions described in this specification may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above devices. A general-purpose processor may be a microprocessor, or any existing processor, controller, microcontroller, or state machine. The above circuits may be digital circuits or analog circuits. In cases where advancements in semiconductor technology have led to new integrated circuit technologies that replace existing integrated circuits, one or more embodiments of the present invention may also be implemented using these new integrated circuit technologies.

[0212] Furthermore, the present invention is not limited to the embodiments described above. Although various examples of the embodiments have been described, the present invention is not limited thereto. Fixed or non-mobile electronic devices installed indoors or outdoors can be used as terminal devices or communication devices, such as AV equipment, kitchen equipment, cleaning equipment, air conditioners, office equipment, vending machines, and other household appliances.

[0213] As described above, embodiments of the present invention have been described in detail with reference to the accompanying drawings. However, the specific structure is not limited to the above embodiments, and the present invention also includes any design modifications that do not depart from the spirit of the invention. Furthermore, various modifications can be made to the present invention within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included within the technical scope of the present invention. In addition, components with the same effects described in the above embodiments can be substituted for each other.

Claims

1. A method executed by a user equipment (UE), comprising: The UE receives system information and / or RRC proprietary signaling sent by the network. The system information and / or RRC proprietary signaling include SCell configuration, and / or serving cell configuration, and / or NR measurement object configuration. The UE determines whether the SCell is an SSB-less Scell ​​based on the SCell configuration. The UE selects at least one reference cell that satisfies the first condition for the SSB-less SCell, in order to obtain timing reference and AGC resources for the SSB-less SCell, and to determine the activation delay of the SSB-less SCell.

2. The method according to claim 1, wherein, The SCell configuration includes an SSB configuration, and / or an SMTC configuration, and / or a reference cell configuration, wherein the reference cell configuration is used to indicate the cell from which the inter-band SSB-less SCell provides the timing reference and the AGC resources.

3. The method according to claim 2, wherein, If the SCell is not configured with the SSB configuration and / or SMTC configuration, then the SCell is an SSB-less Scell.

4. The method according to claim 1, wherein, The first condition includes: The cell is configured with always-on SSB. The cell is not only configured with Type 1 on-demand SSB. The cell is not a Type 1 on-demand SSB SCell. The cell has an active on-demand SSB, or the cell's on-demand SSB is active. The SSB of the cell is active, or the cell has an active SSB.

5. The method according to claim 4, wherein, The type 1 on-demand SSB refers to an on-demand SSB that does not need to be configured together with an always-on SSB. The type-one on-demand SSB SCell refers to an SCell configured with type-one on-demand SSB.

6. The method according to claim 1, wherein, The serving cell configuration includes SSB absolute frequency information cells and / or subcarrier spacing information cells, and the NR measurement object configuration includes SSB frequency information cells and / or SSB subcarrier spacing information cells.

7. The method according to claim 1, wherein, The UE selects the serving cell to obtain the SSB index of neighboring cells based on the serving cell configuration and the NR measurement object configuration. The absolute SSB frequency of the serving cell is equal to the SSB frequency of the NR measurement object, the subcarrier spacing of the serving cell is equal to the SSB subcarrier spacing of the NR measurement object, and the serving cell satisfies at least one of the first conditions.

8. A user equipment, comprising: processor; as well as Memory, which stores instructions The instructions, when executed by the processor, perform the method according to any one of claims 1 to 7.

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