Method executed by user equipment and user equipment

Abstract

The invention provides a method executed by user equipment and the user equipment. The method comprises the following steps: determining whether a first timer is in a running state, wherein the first timer is started when the user equipment is configured with idle measurement configuration for quickly configuring AC / DC idle measurement for the user equipment; and when the first timer is not in the running state, starting a low power consumption receiver (LP-WUR) to measure the serving cell and / or the neighbor cell.

Description

Technical Field

[0001] This disclosure relates to the field of wireless communication technology, and more specifically, to methods performed by user equipment and corresponding user equipment. Background Technology

[0002] Energy saving in user equipment (UE) is beneficial for extending UE battery life, reducing charging frequency, and improving overall performance. While existing energy-saving technologies can meet these requirements to some extent, they generally suffer from significant latency in UE services. For these reasons, the 3rd Generation Partnership Project (3GPP) approved the NR LP-WUS / WUR work project (version 19) at the RAN plenary meeting. The details of this work project can be found in non-patent literature: RP-234056WID: Low-power wake-up signal and receiver for NR (LP-WUS / WUR). The main objective of this work project is to introduce a low-power receiver (which can be called LR or LP-WUR) to detect the low-power wake-up signal (LP-WUS) sent by the base station for PDCCH and paging monitoring, and to introduce LP-SS for low-power receivers to perform serving cell measurements. When there is no data transmission, the UE's Master Receiver (MR) remains in sleep mode to reduce UE power consumption. When data transmission is required, the UE wakes up the Master Receiver (MR) and performs the corresponding data processing. Low-power receivers can perform serving cell measurements based on LP-SS, which can relax MR measurements or even put the receiver into sleep mode, thereby achieving energy saving for user equipment and reducing service latency. Summary of the Invention

[0003] The purpose of this disclosure is at least to provide a method for properly enabling a low-power receiver and a user equipment for performing the method.

[0004] According to one aspect of this disclosure, a method is provided performed by a user equipment in an RRC idle state or an RRC inactive state, comprising: determining whether a first timer is in a running state, the first timer being started when the user equipment is configured with an idle measurement configuration for quickly configuring idle measurements of AC / DC for the user equipment; and when the first timer is not in a running state, enabling a low-power receiver LP-WUR to perform measurements on the serving cell and / or neighboring cells.

[0005] Optionally, the method further includes performing the idle measurement when at least one of the following conditions is met: the first timer is running; the user equipment is using the master receiver (MR) to perform the measurement; the user equipment is not using LP-WUR to perform the measurement; the user equipment is not listening for low-power synchronization information (LP-SS).

[0006] Optionally, the method further includes: when the first timer is running, performing at least one of the following operations: not using LP-WUR for measurement; not using LP-WUR for serving cell measurement; not listening to low-power synchronization information LP-SS; and not measuring LP-SS.

[0007] Optionally, the LP-WUR is an LP-WUR based on switch modulation OOK.

[0008] Optionally, the method further includes performing the idle measurement using OFDM-based LP-WUR when at least one of the following conditions is met: the user equipment is configured with OFDM-based LP-WUR configuration; the user equipment is configured with the idle measurement configuration; the user equipment is configured with an NR inter-frequency carrier that requires the idle measurement; the user equipment receives an LP-WUR idle measurement indication that allows the use of LP-WUR to perform the idle measurement; the user equipment receives an OFDM-based LP-WUR idle measurement indication that allows OFDM-based LP-WUR to perform the idle measurement; the quality of the serving cell is higher than a threshold; the first timer is running.

[0009] Optionally, the method further includes: performing neighbor cell measurements using OFDM-based LP-WUR when at least one of the following conditions is met: the user equipment is configured with OFDM-based LP-WUR configuration; the user equipment (UE) is configured with neighbor cell measurements; the user equipment is configured with LP-WUR measurement neighbor cell indication; the user equipment is configured with OFDM-based LP-WUR measurement neighbor cell indication; the user equipment is configured with LP-WUR measurement neighbor cell indication indicating permission for LP-WUR to perform neighbor cell measurements; the user equipment is configured with OFDM-based LP-WUR measurement neighbor cell indication indicating permission for OFDM-based LP-WUR to perform neighbor cell measurements; and the quality of the serving cell is higher than a threshold.

[0010] Optionally, the method further includes: receiving an LP-WUR high-priority relaxation measurement indication for indicating whether relaxation measurement is permitted on an LP-WUR high-priority carrier; and, if the LP-WUR high-priority relaxation measurement indication permits relaxation measurement on an LP-WUR high-priority carrier, when a given condition indicating that the user equipment is performing an LP-WUR-based measurement is met, performing at least one of the following first relaxation measurement requirements: the user equipment measures the high-priority carrier at least every K*T time intervals, the number of high-priority carriers being one or more, where K is 120, 240, 360, or 480, T = 60*N seconds, and N is the frequency of the high-priority carrier. The total number of rates; the user equipment measures high-priority carriers at least every M*DRX cycles, where the DRX cycle is configured by the base station and is the DRX cycle under RRC idle state and RRC active state, and M represents the number of DRX cycles; the minimum speed at which the user equipment measures high-priority carriers is the same as the minimum speed at which it measures carriers of the same priority and low-priority carriers; the minimum speed at which the user equipment measures high-priority carriers is an integer multiple of the minimum speed at which it measures carriers of the same priority and low-priority carriers; the minimum speed at which the user equipment measures carriers of the same priority and low-priority carriers is an integer multiple of the minimum speed at which it measures high-priority carriers; the minimum speed is the minimum time interval for performing measurements on the carrier.

[0011] Optionally, the given conditions include at least one of the following: the user equipment is performing measurements using LP-WUR; the user equipment is performing measurements using LP-SS; the user equipment is listening to LP-SS; the user equipment is performing measurements using OOK-based LP-WUR.

[0012] Optionally, the method further includes: when the user equipment is not configured with the LP-WUR high priority relaxation measurement indication, the user equipment measures the high priority carrier at least every T time intervals.

[0013] According to another aspect of this disclosure, a user equipment is also provided, comprising: a processor; and a memory storing instructions; wherein the instructions, when executed by the processor, perform the method as described above.

[0014] The method disclosed herein enables a low-power receiver appropriately without conflicting with idle measurements used for quickly configuring AC / DC for user equipment. Attached Figure Description

[0015] Figure 1 This is a flowchart of a method performed by a user equipment according to an embodiment of the present disclosure.

[0016] Figure 2 This is a flowchart of a method performed by a user equipment according to another embodiment of the present disclosure.

[0017] Figure 3 This is a flowchart of a method performed by a user equipment according to another embodiment of the present disclosure.

[0018] Figure 4 This is a flowchart of a method performed by a user equipment according to another embodiment of the present disclosure.

[0019] Figure 5 This is a simplified structural block diagram of the user equipment (UE) involved in this disclosure. Detailed Implementation

[0020] The present disclosure will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the present disclosure 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 disclosure have been omitted to prevent confusion in understanding the present disclosure.

[0021] The following describes some of the terms used in this disclosure. For the specific meanings of these terms, please refer to the latest 3GPP standard specifications.

[0022] UE: User Equipment

[0023] NR: New Radio, a next-generation wireless technology

[0024] MAC: Medium Access Control

[0025] MAC CE: MAC control element

[0026] RRC: Radio Resource Control

[0027] RRC_CONNECTED: RRC connection state

[0028] RRC_INACTIVE: RRC inactive state

[0029] RRC_IDLE: RRC idle state

[0030] RAN: Radio Access Network, Wireless Access Layer

[0031] PDCCH: Physical downlink control channel

[0032] PUCCH: Physical Uplink Control Channel

[0033] PUSCH: Physical Uplink Shared Channel

[0034] PBCH: Physical broadcast channel

[0035] SFN: System Frame Number

[0036] PDU: Protocol Data Unit

[0037] SSB: SS / PBCH block, Synchronization Signal / Physical Broadcast Channel Block

[0038] DCI: Downlink Control Information

[0039] C-RNTI: Temporary Identifier for Cellular Wireless Network

[0040] RSRP: Reference Signal Received Power

[0041] RSRQ: Reference Signal Received Quality

[0042] SpCell: Special Cell, including PCCell and PSCell.

[0043] DC: Dual Connectivity

[0044] MCG: Master Cell Group

[0045] SCG: Secondary Cell Group

[0046] PCell: Primary Cell

[0047] PSCell: Primary SCG Cell (SCG Main Cell)

[0048] MIB: Master Information Block

[0049] DRX: Discontinuous Reception

[0050] SIB: System Information Block

[0051] gNB: the next generation Node B, next-generation base station

[0052] RLF: Radio Link Failure.

[0053] SN: Sequence Number

[0054] CN: Core Network

[0055] SR: Scheduling Request

[0056] UL-SCH: Uplink Shared Channel

[0057] CSI: Channel State Information

[0058] SRS: Sounding Reference Signal

[0059] HARQ: Hybrid Automatic Repeat Request.

[0060] MR: main receiver

[0061] LP: Low Power

[0062] WUS: wake up signal

[0063] WUR: wake up receiver

[0064] LR: low power receiver

[0065] LP-SS: Low Power Synchronization Signal

[0066] LP-WUR: Low-Power Wake-up Receiver

[0067] OFDM: Orthogonal Frequency Division Multiplexing

[0068] OOK: On-and-Off Keying, switch modulation

[0069] In this disclosure, the network (or NW), base station (or gNB or eNB), and RAN are interchangeable. 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.

[0070] In this disclosure, User Equipment (UE) may refer to a device that supports user power saving, a device that supports LP-WUS and / or LP-WUR and / or LP-SS, or other types of NR or LTE devices.

[0071] In this disclosure, the terms "feedback", "submit", "report", "send", "transmit or transport", "inform", "indicate", and "provide" can be used interchangeably.

[0072] In this disclosure, the terms "use", "be available", "apply", "implement", "enable", "activate", "perform", and "do" can be used interchangeably.

[0073] In this disclosure, "associate", "correspond", and "map" can be used interchangeably.

[0074] In this disclosure, the terms receive / reception, detect, monitor, acquire / acquisition, and derive are used interchangeably.

[0075] In this disclosure, "deactivate (non-active or deactive)," "stop," "stop," "exit," and "de-enable" can be used interchangeably.

[0076] In this disclosure, the terms "activate", "start", "enable", "use", "enter", "wake up", and "start using" can be used interchangeably.

[0077] In this disclosure, "time" can be time, duration, period, time period, etc., and these names can be used interchangeably.

[0078] In this disclosure, "effective" and "available" are used interchangeably.

[0079] In this disclosure, “LP-WUR”, “LR”, and “WUR” can be used interchangeably.

[0080] In this disclosure, "idle / inactive measurement", "idle mode CA / DC measurement", and "idle / inactive CA / DC measurement" can be used interchangeably.

[0081] In this disclosure, "high priority" and "higher priority" can be used interchangeably.

[0082] In this disclosure, "idle / inactive measurement" refers to a measurement of CA / DC in the RRC idle state and / or RRC inactive state.

[0083] In this disclosure, "priority" and "cell reselection priority" can be used interchangeably.

[0084] 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.

[0085] The following describes the relevant technologies disclosed herein.

[0086] In NR networks, even without data transmission, User Equipment (UE) can maintain a data connection to the network to provide always-on network service. For example, UEs in idle or inactive states periodically check the network for paging messages. This requires UEs to periodically check for paging messages, even if the paging message does not indicate data transmission to the UE or the paging message is unrelated to the UE. Such behavior consumes significant UE power, affecting battery life and reducing user experience.

[0087] User equipment (UE) can use a low-power (LP) auxiliary receiver to detect low-power wake-up signals (LP-WUS) transmitted by the base station. The LP auxiliary receiver is also called a low-power receiver (LR), or a low-power wake-up receiver (LP-WUR), or simply a receiver for receiving LP-WUS. When there is no data transmission, the UE's main receiver (MR) remains in sleep mode to reduce the UE's power consumption.

[0088] In RRC IDLE and RRC INACTIVE states, the network sends a paging message to the UE when downlink data needs to be transmitted. With the introduction of LP-WUS, the UE determines whether and when to wake up the MR to listen for paging based on the information indicated by the LP-WUS, and performs corresponding data transmission. The LP-WUS signal indicates relevant information needed to wake up the UE, such as the UE identifier (ID) and the group information the UE belongs to. The UE can determine whether it is to be woken up by this LP-WUS based on the indication. Only when the UE's LP-WUS detects a wake-up indication message (LP-WUS or contained in LP-WUS) for itself, the UE wakes up the MR to perform related processing, such as detecting the paging PDCCH on the associated paging opportunity, or transmitting PRACHpreamble within the corresponding window. This allows the UE to maintain a connection with the network with very low power consumption and reduces network response latency. However, the coverage area of ​​LP-WUS may be small, and the UE may only be able to listen to LP-WUS when it is close to the base station.

[0089] In RRC CONNECTED mode, generally, if connected mode DRX is configured, the UE only listens to the PDCCH during the DRX active period and not at other times. The UE periodically starts an on-duration timer according to the DRX cycle, and the UE needs to listen to the PDCCH during the on-duration timer's operation. With the introduction of LP-WUS, LP-WUS is used to trigger the UE to listen to the PDCCH. Since periodic PDCCH listening is no longer required, the UE's power consumption is reduced.

[0090] In NR (Network Receiver), the UE needs to periodically measure the serving cell and neighboring cells to obtain network quality information. With the introduction of LR-WUR (Low Power Synchronization Receiver), when the UE uses LP-WUR, it can use LP-WUR to measure the serving cell. When the UE uses MR (Mean Access Receiver), it can use MR to measure the serving cell. There are two types of LP-WUR: one based on OOK (Out-of-Knowledge) and the other based on OFDM (Optical Frequency Division Multiplexing). When using OOK-based LP-WUR, the UE listens to the low-power synchronization signal (LP-SS) sent by the base station and measures LP-RSRP and LP-RSRQ to obtain the serving cell quality. OFDM-based LP-WUR listens to the SSB (Secure-Side Signal) sent by the base station and measures SS-RSRP and SS-RSRQ to obtain the serving cell quality. Since LR-WUR consumes less power than MR, using LP-WUR can reduce power consumption.

[0091] When using LP-WUR, neighboring cells can be omitted or their measurement can be relaxed (e.g., by increasing the interval between measurements). LP-WUR based on OOK is only used for serving cell measurements and cannot be used for neighboring cell measurements; in this case, the UE can only use MR to measure neighboring cell quality.

[0092] One possible approach to determining when to enable LP-WUR is based on the quality of the serving cell. If the current serving cell is of good quality, for example, if the cell quality of the current serving cell measured based on MR and / or LP-WUR is above a certain threshold, the UE can enable LP-WUR, disable MR, or have MR enter sleep mode. If the current serving cell quality deteriorates, for example, if the cell quality of the current serving cell measured based on MR and / or LP-WUR is below a certain threshold, the UE can wake up MR and disable LP-WUR.

[0093] Relaxation measurement

[0094] In 3GPP Release 16, relaxed measurements for RRC idle and inactive states were standardized and defined in the latest 3GPP standard specification TS 38.304 (see section 5.2.4.9). Relaxed measurements target neighboring cell measurements. The criteria for relaxed measurements include: low mobility criteria and non-cell edge criteria. When a UE is requested to perform neighboring cell measurements, after obtaining the neighboring cell measurement results, the UE evaluates the low mobility criteria and non-cell edge criteria to determine whether relaxed measurements can be performed.

[0095] Low-motion criterion: (Srxlev) Ref -Srxlev) SearchDeltaP Among them, Srxlev Ref ​Srxlev is the reference reception rating (RSRP) of the serving cell; Srxlev is the current reception rating (RSRP) of the serving cell. SearchDeltaP A threshold value configured for the network to evaluate low mobility criteria. If the UE is within a certain period of time (e.g., T... SearchDeltaP If the low mobility criterion is met (the duration value used to evaluate the satisfaction of the low mobility criterion), then the UE can perform relaxed measurement to perform neighbor cell measurement.

[0096] Non-cell edge criterion: Srxlev > S SearchThresholdP And Squal>S SearchThresholdQ Where Srxlev is the current reception rating level (RSRP) of the serving cell, Squal is the current quality rating of the serving cell, and S... SearchThresholdP The RSRP threshold value configured for the network to evaluate non-cell edge criteria, S SearchThresholdQ The RSRQ threshold value configured for the network to evaluate non-cell edge criteria. If the UE meets the non-cell edge criteria, the UE performs relaxed measurement to perform neighbor cell measurement.

[0097] The base station broadcasts configuration parameters for relaxed measurements in RRC idle state and RRC inactive state through system messages, including the switch for low mobility assessment and non-cell edge assessment, low mobility criteria, and accurate assessment thresholds and assessment time parameters for non-cell edge assessment.

[0098] When a UE performs a relaxed measurement, it can increase the relaxation measurement factor on top of the normal measurement, or use a different measurement factor than the normal measurement (e.g., a larger measurement factor than the normal measurement factor) to increase the measurement time interval and / or increase the measurement evaluation time interval.

[0099] Idle / inaactive measurement

[0100] To quickly configure CA / DC for the UE in RRC connected mode, the base station allows the UE to measure specified carriers / frequency in RRC idle and RRC inactive states. The UE saves the measurement results and sends them to the base station after entering RRC connected mode. This allows the base station to quickly configure CA / DC for the UE using the neighboring cell measurement results obtained by the UE in RRC idle and RRC inactive states, such as quickly adding SCells and PSCells. The base station sends a system message and / or an RRC Release message to the UE. This message may contain idle measurement configuration (e.g., measIdleConfig), configuring carrier / frequency information (e.g., carrier / frequency list) and time information (e.g., measIdleDuration) for idle / inactive measurements. The UE measures the idle / inactive carrier / frequency in RRC idle and RRC inactive states and saves the measurement results. The base station sends an RRC Release message to the UE. If the received RRCLease message contains an idle measurement configuration, and the configuration is set to setup, and / or the RRCLease message contains measIdleDuration, then the UE starts timer T331, with the value of T331 set to measIdleDuration. During the operation of T331, the UE performs idle / inactive measurements in both RRC connected and RRC inactive states. When the UE enters the RRC connected state, it can send an RRCSetupComplete (RRC establishment complete) message or an RRCResumeComplete (RRC recovery complete) message to the base station, carrying an indication of whether the idle / inactive measurement result is valid in the message, and reporting the saved idle / inactive measurement result to the base station when requested by the base station. Alternatively, the UE can also report the saved idle / inactive measurement result to the base station in the RRCResumeComplete message.

[0101] The carrier / frequency measured in Idle / inactive mode is the inter-frequency carrier. For UEs in RRC idle mode and RRC inactive mode, the inter-frequency carrier measurement is the neighboring cell measurement.

[0102] High-priority inter-frequency measurement

[0103] In RRC idle and RRC inactive states, inter-frequency (IF) and inter-system (inter-RAT) measurements are both measurements of neighboring cells. The base station can configure priorities for each carrier / frequency for IF and / or inter-system (inter-RAT) measurements. IF (inter-system) carriers / frequencies with the same or lower priority than the serving cell can undergo relaxed measurements. IF (inter-system) carriers / frequencies with higher priority than the serving cell can have relaxed measurements provided low mobility and non-cell edge criteria are met; however, measurements of high-priority IF (inter-system) carriers / frequencies are performed more frequently than those with the same or lower priority.

[0104] This disclosure discusses when the UE should enable LP-WUR after its introduction, how to perform inter-frequency measurements when LP-WUR is enabled, and how to relax neighbor cell measurements. This disclosure enables LP-WUR in a timely and correct manner, reduces neighbor cell measurements, avoids frequent MR wake-ups, and thus reduces UE power consumption.

[0105] In the following description, "Enable LP-WUR" means starting to use LP-WUR, and / or starting to listen to LP-WUS, and / or starting to listen to LP-SS. "Disable LP-WUR" means stopping the use of LP-WUR, and / or stopping listening to LP-WUS, and / or stopping listening to LP-SS. In the following description, "using LP-WUR" and "based on LP-SS" can be used interchangeably. Neighbor cell measurements include, but are not limited to: co-frequency cell measurements, inter-frequency cell measurements, and inter-system (inter-RAT) cell measurements.

[0106] In the following embodiments, the same nouns may represent the same meaning, and the same parameter names may represent the same meaning.

[0107] The following describes in detail several embodiments of this disclosure that address the above-mentioned problems.

[0108] First, the process of realizing this disclosure will be explained.

[0109] As previously mentioned, in order to quickly configure CA / DC for the UE in RRC connected mode, the UE performs specific idle measurements, i.e., Idle / inactive measurements, in RRC idle and RRC inactive modes according to the base station's instructions. The inventors of this disclosure have discovered that since Idle / inactive measurements are performed on neighboring cells, and LP-WUR includes OOK-based LP-WURs that cannot measure neighboring cells, if OOK-based LP-WURs are enabled when performing Idle / inactive measurements, the Idle / inactive measurements will not be executed successfully.

[0110] To avoid using LP-WUR at inappropriate times and to prevent the failure to execute Idle / inactive measurements smoothly, the inventors of this disclosure have discovered that the aforementioned problems can be avoided by not enabling LP-WUR while an Idle / inactive measurement is being performed, or by confirming whether an Idle / inactive measurement is being performed before enabling LP-WUR and enabling LP-WUR when no Idle / inactive measurement is being performed. Furthermore, regarding how to confirm whether an Idle / inactive measurement is being performed, the inventors have discovered that this can be achieved by checking whether a first timer that times the execution time of the Idle / inactive measurement is running.

[0111] Furthermore, since OFDM-based LP-WUR can perform measurements on neighboring cells, it is also possible to disable OOK-based LP-WUR and enable OFDM-based LP-WUR when it is confirmed that Idle / inactive measurements are being performed.

[0112] Besides idle / inactive measurements, the same concept may apply to other types of measurements targeting neighboring cells. That is, when performing such measurements, OOK-based LP-WUR should not be enabled; only OFDM-based LP-WUR should be enabled. Alternatively, before enabling OOK-based LP-WUR, it should be confirmed whether a measurement targeting a neighboring cell is currently being performed or whether such a measurement will be performed. Or, before enabling LP-WUR, it can be confirmed whether a measurement targeting a neighboring cell is currently being performed or whether such a measurement will be performed, and the type of LP-WUR to be enabled should be determined based on the determination result.

[0113] Based on the above findings, the inventors of this application have implemented this disclosure. One aspect of the method of this disclosure includes: determining whether a first timer is in an operating state, the first timer being started when the user equipment is configured with an idle measurement configuration for quickly configuring idle AC / DC measurements for the user equipment; and when the first timer is not in an operating state, enabling a low-power receiver (LP-WUR) to perform measurements on the serving cell and / or neighboring cells.

[0114] This disclosure also includes other implementations not mentioned herein, which may achieve other effects not mentioned herein, which is self-evident.

[0115] Furthermore, in this disclosure, sometimes “measurement” can be interchanged with “search”, and sometimes “carrier” can be replaced with “frequency”, “different frequency”, etc.

[0116] The following describes several embodiments of this disclosure. These embodiments are merely examples and can be combined in any way.

[0117] Example

[0118] Figure 1 This is a schematic diagram illustrating the steps performed by the UE according to one or more embodiments. The UE can perform... Figure 1 One or more steps. Figure 1 This includes steps S101 to S103.

[0119] Optionally, in step S101, the UE receives a system message and / or an RRC-specific message (e.g., an RRC Release message) sent by the network. Optionally, the system message and / or the RRC-specific message includes an idle measurement configuration (e.g., measIdleConfig) for configuring idle / inactive measurements. The idle measurement configuration is used to indicate the measurement configuration that the UE needs to save and use in the RRC idle state and / or the RRC inactive state.

[0120] Optionally, the idle measurement configuration includes at least one of the following:

[0121] - A list of idle measurement carriers (e.g., measIdleCarrierListNR) is used to indicate the carrier(s) information that needs to be measured in the RRC idle state and / or the RRC inactive state;

[0122] - Idle measurement time (e.g., measIdleDuration) is used to indicate the duration of idle / inactive measurements performed in the RRC idle state and / or RRC inactive state.

[0123] Optionally, if the UE determines that the received RRC proprietary message contains an idle measurement configuration, and / or the idle measurement configuration is setup, and / or the RRC proprietary message contains an idle measurement configuration, then the UE starts a first timer (e.g., T331), and the value of the first timer is set to the idle measurement time.

[0124] Optionally, the system messages and / or RRC proprietary messages may also include LP-WUR related configurations. Optionally, the LP-WUR related configurations include at least one of the following:

[0125] -LP-SS configuration;

[0126] -LP-WUR configuration;

[0127] - LP-WUR configuration based on OOK;

[0128] - LP-WUR configuration based on OFDM.

[0129] Optionally, to avoid interference between idle / inactive measurements and LP-WUR usage, idle / inactive measurements and LP-WUR-related configurations cannot be configured simultaneously. Optionally, if an LP-WUR-related configuration is configured (or exists), the idle measurement configuration does not exist; otherwise, if the LP-WUR-related configuration is not configured (or does not exist), the idle measurement configuration may exist. Alternatively, optionally, if an idle measurement configuration is configured (or exists), the LP-WUR-related configuration does not exist; otherwise, if the idle measurement configuration is not configured (or does not exist), the LP-WUR-related configuration may exist.

[0130] If idle / inactive measurement and LP-WUR related configurations can be configured simultaneously, the UE needs to perform a judgment and corresponding operation, as shown in steps S102 and / or S103.

[0131] Optionally, in step S102, the UE determines whether to save the idle / inactive measurement configuration (or idle measurement configuration) and whether to perform idle / inactive measurement.

[0132] Optionally, the UE determines at least one of the following conditions:

[0133] - The UE is in RRC idle state or RRC inactive state;

[0134] - The UE is configured with idle measurement settings;

[0135] - The UE is configured to use an NR inter-frequency carrier that requires idle / inactive measurements;

[0136] - The first timer is running;

[0137] -UE is measured using MR (RRM);

[0138] -MR was used for (RRM) measurements;

[0139] -UE did not use (OOK-based) LP-WUR for (RRM) measurement;

[0140] -UE is not listening to LP-SS.

[0141] If at least one of the above conditions is met, the UE saves the idle / inactive measurement configuration (e.g., a list of idle measurement carriers) and / or the UE performs idle / inactive measurements.

[0142] Optionally, in step S103, the UE determines whether to use LP-WUR for measurement.

[0143] Optionally, the UE determines at least one of the following conditions:

[0144] - The quality of the serving cell is higher than a threshold (e.g., the RSRP of the serving cell is higher than a threshold).

[0145] (and / or the serving cell's RSRQ is higher than another threshold);

[0146] - The UE is in RRC idle state or RRC inactive state;

[0147] - The UE is configured with idle measurement settings;

[0148] - The UE is configured to use an NR inter-frequency carrier that requires idle / inactive measurements;

[0149] - The first timer is not running.

[0150] If at least one of the above conditions is met, the UE performs at least one of the following operations:

[0151] - Enable LP-WUR, or enable OOK-based LP-WUR;

[0152] - Switch from MR to LP-WUR, or from MR to OOK-based LP-WUR;

[0153] - Perform measurements using LP-WUR, or use OOK-based LP-WUR;

[0154] - Perform serving cell measurements using LP-WUR, or perform serving cell measurements using OOK-based LP-WUR;

[0155] - (Start) Listen to LP-SS, or (Start) Measure LP-SS.

[0156] Alternatively, another implementation of step S103 is as follows:

[0157] Optionally, the UE determines at least one of the following conditions:

[0158] - The UE is in RRC idle state or RRC inactive state;

[0159] - The UE is configured with idle measurement settings;

[0160] - The UE is configured to use an NR inter-frequency carrier that requires idle / inactive measurements;

[0161] - The first timer is running.

[0162] If at least one of the above conditions is met, the UE performs at least one of the following operations:

[0163] - Measurements are not performed using LP-WUR;

[0164] - Do not use LP-WUR for serving cell measurements;

[0165] - Do not use OOK-based LP-WUR for measurements;

[0166] - Do not use OOK-based LP-WUR for serving cell measurements;

[0167] - Do not listen to (or measure) LP-SS;

[0168] - Perform measurements using MR;

[0169] - Use MR to perform idle / inactive measurements.

[0170] Figure 2 This is a schematic diagram illustrating the steps performed by the UE according to one or more embodiments. The UE can perform... Figure 2 One or more steps. Figure 2 This includes steps S201 to S202.

[0171] Optionally, in step S201, the UE receives a first system message (e.g., SIB2) and / or an RRC-specific message (e.g., an RRC Release message) sent by the network, which may contain at least one of the following information:

[0172] -LP-WUR measurement of neighboring cell indication;

[0173] - LP-WUR measurement of neighboring cell indication based on OFDM.

[0174] Optionally, the "LP-WUR Measurement Neighbor Cell Indication" is used to indicate whether LP-WUR is allowed to perform neighbor cell (or neighbor carrier, or neighbor frequency) measurements. Setting the "LP-WUR Measurement Neighbor Cell Indication" to TRUE indicates that LP-WUR is allowed to perform neighbor cell (or neighbor carrier, or neighbor frequency) measurements, or if the system message and / or RRC proprietary message contains the "LP-WUR Measurement Neighbor Cell Indication", it indicates that LP-WUR is allowed to perform neighbor cell (or neighbor carrier, or neighbor frequency) measurements.

[0175] Optionally, the "OFDM-based LP-WUR Measurement Neighbor Cell Indication" is used to indicate whether OFDM-based LP-WUR is allowed to perform neighbor cell (or neighbor carrier, or neighbor frequency) measurements. Setting the "OFDM-based LP-WUR Measurement Neighbor Cell Indication" to TRUE indicates that OFDM-based LP-WUR is allowed to perform neighbor cell (or neighbor carrier, or neighbor frequency) measurements, or if the system message and / or RRC proprietary message contains the "OFDM-based LP-WUR Measurement Neighbor Cell Indication", it indicates that OFDM-based LP-WUR is allowed to perform neighbor cell (or neighbor carrier, or neighbor frequency) measurements.

[0176] Optionally, in step S202, the UE determines whether to use LP-WUR or OFDM-based LP-WUR for neighbor cell (or neighbor carrier, or neighbor frequency) measurement.

[0177] Optionally, the UE determines at least one of the following conditions:

[0178] - The UE is in RRC idle state or RRC inactive state;

[0179] -UE supports (or is equipped with) LP-WUR;

[0180] - The UE supports (or is equipped with) OFDM-based LP-WUR;

[0181] - It was configured with an OFDM-based LP-WUR configuration;

[0182] - The UE is configured with neighboring cell (or neighboring carrier, or neighboring frequency) measurements;

[0183] - Configured with LP-WUR measurement neighbor cell indication (or configured with OFDM-based LP-WUR measurement neighbor cell indication);

[0184] -LP-WUR Measurement Neighbor Cell Indication indicates that LP-WUR is permitted to perform neighbor cell (or neighbor carrier, or neighbor frequency) measurements;

[0185] - OFDM-based LP-WUR measurement neighbor cell indication indicates that OFDM-based LP-WUR is allowed to perform neighbor cell (or neighbor carrier, or neighbor frequency) measurements;

[0186] - The quality of the serving cell is higher than a threshold (e.g., the RSRP of the serving cell is higher than one threshold, and / or the RSRQ of the serving cell is higher than another threshold).

[0187] If at least one of the above conditions is met, the UE performs at least one of the following operations:

[0188] - Use LP-WUR to perform neighbor cell (or neighbor carrier, or neighbor frequency) measurements;

[0189] - Perform neighbor cell (or neighbor carrier, or neighbor frequency) measurements using OFDM-based LP-WUR.

[0190] Figure 3 This is a schematic diagram illustrating the steps performed by the UE according to one or more embodiments. The UE can perform... Figure 3 One or more steps. Figure 3 This includes steps S301 to S302.

[0191] Optionally, the only difference between step S301 and step S101 is described below; all other descriptions and UE behavior steps S301 are exactly the same as step S101:

[0192] Optionally, the idle measurement configuration further includes at least one of the following:

[0193] -LP-WUR idle measurement indicator;

[0194] - LP-WUR idle measurement indication based on OFDM.

[0195] Optionally, the "LP-WUR Idle Measurement Indicator" is used to indicate whether the LP-WUR is allowed to perform idle / inactive measurements. Setting the "LP-WUR Idle Measurement Indicator" to TRUE indicates that the LP-WUR is allowed to perform idle / inactive measurements, or if the idle measurement configuration includes the "LP-WUR Idle Measurement Indicator", it indicates that the LP-WUR is allowed to perform idle / inactive measurements.

[0196] Optionally, the "OFDM-based LP-WUR Idle Measurement Indicator" is used to indicate whether the OFDM-based LP-WUR is allowed to perform idle / inactive measurements. Setting the "OFDM-based LP-WUR Idle Measurement Indicator" to TRUE indicates that the OFDM-based LP-WUR is allowed to perform idle / inactive measurements, or if the idle measurement configuration includes the "OFDM-based LP-WUR Idle Measurement Indicator", it indicates that the OFDM-based LP-WUR is allowed to perform idle / inactive measurements.

[0197] Alternatively, "allow LP-WUR to perform idle / inactive measurements" can also be replaced by at least one of the following:

[0198] - When the UE uses LP-WUR, it is allowed to perform idle / inactive measurements;

[0199] - When the UE uses LP-WUR for measurement, allow LP-WUR to perform idle / inactive measurements.

[0200] Alternatively, "allowing OFDM-based LP-WUR to perform idle / inactive measurements" can also be replaced by at least one of the following:

[0201] -When the UE uses OFDM-based LP-WUR, is OFDM-based LP- allowed?

[0202] WUR performs idle / inactive measurements;

[0203] - When the UE uses OFDM-based LP-WUR for measurement, is it allowed to perform idle / inactive measurements using OFDM-based LP-WUR?

[0204] Optionally, in step S302, the UE determines whether to use OFDM-based LP-WUR for idle / inactive measurements.

[0205] Optionally, the UE determines at least one of the following conditions:

[0206] - The UE is in RRC idle state or RRC inactive state;

[0207] -UE supports (or is equipped with) LP-WUR;

[0208] - The UE supports (or is equipped with) OFDM-based LP-WUR;

[0209] - It was configured with an OFDM-based LP-WUR configuration;

[0210] - The UE is configured with idle measurement settings;

[0211] - The UE is configured to use an NR inter-frequency carrier that requires idle / inactive measurements;

[0212] - Configured with LP-WUR idle measurement indication (or configured with OFDM-based LP-WUR idle measurement indication);

[0213] The -LP-WUR idle measurement indicator indicates that the LP-WUR is allowed to perform idle / inactive measurements;

[0214] - The OFDM-based LP-WUR idle measurement indication indicates that the OFDM-based LP-WUR is allowed to perform idle / inactive measurements;

[0215] - The quality of the serving cell is higher than a threshold (e.g., the RSRP of the serving cell is higher than one threshold, and / or the RSRQ of the serving cell is higher than another threshold);

[0216] - The first timer is running.

[0217] If at least one of the above conditions is met, the UE performs at least one of the following operations:

[0218] - Perform idle / inactive measurements using LP-WUR;

[0219] - Perform idle / inactive measurements using OFDM-based LP-WUR.

[0220] Figure 4 This is a schematic diagram illustrating the steps performed by the UE according to one or more embodiments. The UE can perform... Figure 4 One or more steps. Figure 4 This includes steps S401 to S403.

[0221] Optionally, in step S401, the UE receives a first system message (e.g., SIB2) and / or an RRC-specific message (e.g., an RRC Reelease message) sent by the network, which contains cell reselection priority information of the serving cell. Optionally, the UE receives a second system message (e.g., SIB4) and / or an RRC-specific message (e.g., an RRC Reelease message) sent by the network, which contains inter-frequency cell reselection information.

[0222] Optionally, the inter-frequency cell reselection information is represented by an inter-frequency carrier frequency list, which includes the frequencies of neighboring carriers and the cell reselection priority of each neighboring carrier. Optionally, inter-frequency (inter-system) carriers / frequencies with a cell reselection priority higher than that of the serving cell are called high-priority (inter-frequency) carriers / frequencies. Inter-frequency (inter-system) carriers / frequencies with a cell reselection priority lower than that of the serving cell are called low-priority (inter-frequency) carriers / frequencies. Inter-frequency (inter-system) carriers / frequencies with a cell reselection priority equal to that of the serving cell are called equal-priority (inter-frequency) carriers / frequencies.

[0223] Optionally, the first system message, and / or the second system message, and / or the RRC proprietary message further include at least one of the following configurations:

[0224] -LP-WUR (or LP-SS) high-priority measurement of relaxation indication;

[0225] -LP-WUR (or LP-SS) low mobility assessment criteria;

[0226] -LP-WUR (or LP-SS) Non-Cell Edge Assessment Criteria (also known as LP-WUR (or LP-SS) Cell Edge Assessment Criteria);

[0227] -LP-WUR RSRP (or LP-RSRP) threshold;

[0228] -LP-WUR RSRQ (or LP-RSRQ) threshold.

[0229] Optionally, an LP-WUR (or LP-SS) high-priority measurement relaxation indicator is used to indicate whether measurements can be relaxed on the LP-WUR (or LP-SS) high-priority (different frequency) carrier / frequency.

[0230] Optionally, the LP-WUR (or LP-SS) low mobility assessment criterion is used to instruct the UE on the criteria for detecting low mobility based on LP-WUR (or LP-SS). Optionally, the LP-WUR (or LP-SS) non-cell edge assessment criterion (also referred to as the LP-WUR (or LP-SS) cell edge assessment criterion) is used to instruct the UE on the criteria for detecting non-cell edge based on LP-WUR (or LP-SS).

[0231] Optionally, in step S402, the UE determines whether to use LP-WUR for measurement and determines to use LP-WUR (or LP-SS) to perform (serving cell) measurement, or determines to listen to LP-SS, or determines to use OOK-based LP-WUR to perform (serving cell) measurement.

[0232] Optionally, in step S403, the UE determines the inter-frequency NR cell measurement requirements.

[0233] Optionally, the UE determines at least one of the following first conditions:

[0234] - The UE performs (serving cell) measurements using LP-WUR (or LP-SS);

[0235] -UE is listening to LP-SS;

[0236] - The UE performs (serving cell) measurements using OOK-based LP-WUR.

[0237] Optionally, if at least one of the first conditions above is met, the UE performs at least one of the following first relaxation measurement requirements:

[0238] - The UE searches (and / or measures) high-priority (different frequency) carriers (or frequencies, or layers) at least every K*T time intervals. There can be one or more high-priority (different frequency) carriers (or frequencies, or layers). Optionally, K can be 120, 240, 360, or 480; optionally, T = (60*N) seconds; optionally, N is the total number of high-priority (different frequency) carriers.

[0239] - The UE searches (and / or measures) a high-priority (different frequency) carrier (or frequency, or layer) at least every M*DRX cycles. The DRX cycle is configured by the base station and is either the DRX cycle in the RRC idle state or the RRC active state, or the eDRX (extended DRX) cycle. M represents the number of DRX cycles, which can be an integer or a decimal.

[0240] - The minimum rate for searching (and / or measuring) high-priority (different frequency) carriers (or frequencies, or layers) is the same as the minimum rate for searching (and / or measuring) high-priority (different frequency) carriers (or frequencies, or layers) and low-priority (different frequency) carriers (or frequencies, or layers).

[0241] - The minimum rate for searching (and / or measuring) a high-priority (different frequency) carrier (or frequency, or layer) is a multiple (or an integer multiple) of the minimum rate for searching (and / or measuring) a carrier (or frequency, or layer) of the same priority (different frequency) and a low-priority (different frequency) carrier (or frequency, or layer).

[0242] - The minimum rate for searching (and / or measuring) carriers (or frequencies, or layers) of the same priority (different frequency, or layer) and low priority (different frequency, or layer) is a multiple (or an integer multiple) of the minimum rate for searching (and / or measuring) high priority (different frequency, or layer).

[0243] Optionally, the minimum rate refers to how often the UE must perform a search or measurement of one or more carriers (or frequencies, or layers).

[0244] Alternatively, the UE may determine at least one of the following conditions:

[0245] - It is configured with the LP-WUR (or LP-SS) low mobility assessment criteria;

[0246] - Meets the LP-WUR (or LP-SS) low mobility criteria;

[0247] - It is configured with LP-WUR (or LP-SS) cell edge assessment criteria;

[0248] - Meets the LP-WUR (or LP-SS) cell edge assessment criteria

[0249] -Srxlev > LP-WUR RSRP threshold (or LP-RSRP threshold), and Squal > LP-WUR RSRQ threshold (or LP-RSRQ threshold). Where Srxlev is the current reception class value (e.g., the current RSRP) of the serving cell, and Squal is the current quality value of the serving cell.

[0250] Optionally, if at least one of the above conditions is met (or if at least one of the first conditions is met and at least one of the above conditions is met), the UE executes at least one of the first relaxed measurement requirements. Alternatively, if at least one of the above conditions is met (or if at least one of the first conditions is met and at least one of the above conditions is met): if an LP-WUR (or LP-SS) high-priority measurement relaxation indication is configured, the UE executes at least one of the first relaxed measurement requirements; otherwise, i.e., if an LP-WUR (or LP-SS) high-priority measurement relaxation indication is not configured, the UE searches for (and / or measures) a high-priority (different frequency) carrier (or frequency point, or layer) at least every T time interval. The high-priority (different frequency) carrier (or frequency, or layer) can be one or more, T = (60*N) seconds, and N is the total number of high-priority (different frequency) carrier frequencies.

[0251] The UE performs the first relaxation measurement requirement, which can also be described as the UE needing to meet the first measurement requirement.

[0252] Unless otherwise specified, the judgments and operations in each step of the embodiment are independent of the execution order, that is, the execution order of judgments and operations can be interchanged.

[0253] Figure 5 This is a simplified structural block diagram of the user equipment (UE) involved in this disclosure. Figure 5 As shown, the user equipment UE500 includes a processor 501 and a memory 502. The processor 501 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 502 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 502. When executed by the processor 501, these instructions can perform the methods described in detail herein, executed by the user equipment.

[0254] A program running on a device according to this disclosure may be a program that enables a computer to perform the functions of embodiments of this disclosure by controlling a central processing unit (CPU). The program or the information processed by the program may 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.

[0255] Programs used to implement the functions of the embodiments of this disclosure 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.

[0256] 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 circuits described above 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 this disclosure may also be implemented using these new integrated circuit technologies.

[0257] Furthermore, this disclosure is not limited to the embodiments described above. Although various examples of the embodiments have been described, this disclosure 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.

[0258] As described above, embodiments of this disclosure have been described in detail with reference to the accompanying drawings. However, the specific structure is not limited to the above embodiments, and this disclosure also includes any design modifications that do not depart from the spirit of this disclosure. Furthermore, various modifications can be made to this disclosure 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 this disclosure. In addition, components with the same effects described in the above embodiments can be substituted for each other.

Claims

1. A method performed by a user equipment in an RRC idle state or an RRC inactive state, comprising: determining whether a first timer is in a running state, the first timer being started when the user equipment is configured with an idle measurement configuration for fast configuring AC / DC for the user equipment; and when the first timer is not in the running state, enabling a low power receiver, LP-WUR, to perform measurements on a serving cell and / or a neighbor cell. 2.The method of claim 1, further comprising: performing the idle measurement when at least one of the following conditions is met: the first timer is in the running state; the user equipment is using a main receiver, MR, to perform measurements; the user equipment is not using the LP-WUR to perform measurements; the user equipment is not listening to low power synchronization information, LP-SS. 3.The method of claim 1, further comprising: when the first timer is in the running state, performing at least one of the following: not using the LP-WUR to perform measurements; not using the LP-WUR to perform serving cell measurements; not listening to low power synchronization information, LP-SS; not measuring the LP-SS.

4. The method according to any one of claims 1 to 3, wherein, the LP-WUR is an on-off keying, OOK, based LP-WUR. 5.The method of claim 4, further comprising: when at least one of the following conditions is met, performing the idle measurement using an OFDM based LP-WUR: the user equipment is configured with an OFDM based LP-WUR configuration; the user equipment is configured with the idle measurement configuration; the user equipment is configured with a NR inter-frequency carrier for which the idle measurement is required; the user equipment receives a LP-WUR idle measurement indication indicating that the idle measurement is allowed to be performed using the LP-WUR; the user equipment receives an OFDM based LP-WUR idle measurement indication indicating that the idle measurement is allowed to be performed using the OFDM based LP-WUR; a quality of a serving cell is above a threshold; the first timer is running. 6.The method of any of claims 1-3, further comprising: when at least one of the following conditions is met, performing a neighbor cell measurement using an OFDM based LP-WUR: the user equipment is configured with an OFDM based LP-WUR configuration; the user equipment, UE, is configured with a neighbor cell measurement; the user equipment is configured with a LP-WUR measurement neighbor cell indication; the user equipment is configured with an OFDM based LP-WUR measurement neighbor cell indication; the user equipment is configured with a LP-WUR measurement neighbor cell indication indicating that a neighbor cell measurement is allowed to be performed using the LP-WUR; the user equipment is configured with an OFDM based LP-WUR measurement neighbor cell indication indicating that a neighbor cell measurement is allowed to be performed using the OFDM based LP-WUR; a quality of a serving cell is above a threshold. 7.The method of any of claims 1-3, further comprising: receiving an LP-WUR high priority relaxed measurement indication indicating whether relaxed measurement on LP-WUR high priority carrier is allowed or not; and in case that the LP-WUR high priority relaxed measurement indication allows relaxed measurement on LP-WUR high priority carrier, performing at least one of the following first relaxed measurement requirements when a given condition is met, indicating that the user equipment is performing LP-WUR based measurement: the user equipment measures high priority carriers at least every K*T time, the number of high priority carriers is one or more, wherein K is 120, 240, 360 or 480, and T = 60*N seconds, N is the total number of high priority carrier frequencies; the user equipment measures high priority carriers at least every M*DRX cycle, wherein the DRX cycle is configured by the base station, is the DRX cycle in RRC idle state and RRC active state, and M represents the number of DRX cycles; the minimum speed of the user equipment for measuring high priority carriers is the same as the minimum speed for measuring carriers of the same priority and low priority carriers; the minimum speed of the user equipment for measuring high priority carriers is an integer multiple of the minimum speed for measuring carriers of the same priority and low priority carriers; the minimum speed of the user equipment for measuring carriers of the same priority and low priority carriers is an integer multiple of the minimum speed for measuring high priority carriers; the minimum speed is the minimum time interval for performing measurement on a carrier.

8. The method of claim 7, wherein, the given condition includes at least one of the following conditions: the user equipment is performing measurement using LP-WUR; the user equipment is performing measurement using LP-SS; the user equipment is listening to LP-SS; the user equipment is performing measurement using OOK based LP-WUR.

9. The method of claim 7, further comprising: in case that the user equipment is not configured the LP-WUR high priority relaxed measurement indication, the user equipment measures high priority carriers at least every T time.

10. A user equipment, comprising: a processor; and a memory storing instructions; wherein the instructions, when executed by the processor, perform the method of any one of claims 1 to 9.

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