Method for starting and stopping low-power mode, and user equipment

Abstract

Provided in the present invention is a method for starting and stopping a low-power mode, which method is executed by a user equipment. In the low-power mode, the user equipment uses a low-power receiver to receive a low-power wake-up signal and / or uses a low-power synchronization signal to execute a relaxed measurement. The method comprises: receiving an RRC message which is sent from a network; when the RRC message comprises a joint-criterion indication for giving an instruction to jointly take the mobility of a user equipment and the quality of a serving cell into consideration to determine whether to start a low-power mode, determining whether the mobility of the user equipment meets a mobility criterion in a relaxed-measurement criterion, and determining whether the quality of the serving cell in which the user equipment is located meets a quality criterion in the relaxed measurement criterion; and when it is determined that the mobility of the user equipment meets the mobility criterion in the relaxed-measurement criterion and that the quality of the serving cell meets the quality criterion in the relaxed-measurement criterion, starting the low-power mode.

Description

Method for starting and stopping low power consumption mode and user equipment Technical Field

[0001] The present invention relates to the field of wireless communication technology, and more particularly, to a method for executing start and stop of a low-power consumption receiver by a user equipment and a corresponding user equipment. Background Art

[0002] Energy conservation in user equipment (UE) helps extend UE battery life, extend battery life, and reduce charging frequency. While existing energy-saving technologies can meet these energy-saving requirements to a certain extent, they generally suffer from significant UE service latency. For these reasons, the 3rd Generation Partnership Project (3GPP) approved the NR LP-WUS / WUR work item for Release 19 at the RAN plenary meeting. For details, see non-patent document RP-234056 WID: Low-power wake-up signal and receiver for NR (LP-WUS / WUR). The main objectives of this work item are to introduce a low-power receiver (LR or LP-WUR) to detect the low-power wake-up signal (LP-WUS) sent by the base station, and to introduce LP-SS for the low-power receiver to perform serving cell measurements. When no data is being transmitted, the UE's master receiver (MR) remains in a dormant state to reduce UE power consumption. When data needs to be transmitted, the UE wakes up the MR according to the LP-WUS indication and performs the corresponding data processing. The low-power receiver performs serving cell measurements based on LP-SS, which allows the MR to relax measurements or not perform measurements and enter sleep mode, thereby achieving the goal of user equipment energy saving and reducing service delays. Summary of the Invention

[0003] One of the objectives of the present invention is to provide a method and user equipment capable of properly enabling and disabling a low power consumption mode.

[0004] The present invention provides a method for starting and stopping a low power consumption mode executed by a user equipment. In the low power consumption mode, the user equipment uses a low power consumption receiver to receive a low power consumption wake-up signal and / or uses a low power consumption synchronization signal to perform a relaxation measurement. The method comprises: receiving an RRC message sent from a network; in a case where the RRC message includes a joint criterion indication for indicating whether to jointly consider the mobility of the user equipment and the quality of a serving cell to determine whether to enable the low power consumption mode, determining whether the mobility of the user equipment satisfies a mobility criterion in a relaxation measurement criterion, and determining whether the quality of the serving cell where the user equipment is located satisfies a quality criterion in a relaxation measurement criterion; and in a case where it is determined that the mobility of the user equipment satisfies the mobility criterion in the relaxation measurement criterion, and the quality of the serving cell satisfies the quality criterion in the relaxation measurement criterion, enabling the low power consumption mode.

[0005] According to the present invention, the low power consumption mode can be enabled at an appropriate time, and then disabled at an appropriate time. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] FIG1 is a flow chart of a method for starting and stopping a low power consumption mode according to an embodiment of the present invention.

[0007] FIG2 is a flow chart of a method for starting and stopping a low power consumption mode according to another embodiment of the present invention.

[0008] FIG3 is a simplified structural block diagram of a user equipment UE according to the present invention. DETAILED DESCRIPTION

[0009] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the present invention is not limited to the specific embodiments described below. In addition, for the sake of simplicity, detailed descriptions of known technologies that are not directly related to the present invention are omitted to prevent confusion in understanding the present invention.

[0010] The following describes some of the terms involved in this invention. The specific meanings of the terms can be found in the latest 3GPP standards.

[0011] UE:User Equipment

[0012] NR: New Radio, the next generation of wireless technology

[0013] MAC: Medium Access Control

[0014] MAC CE: MAC control element

[0015] RRC: Radio Resource Control

[0016] RRC_CONNECTED: RRC connected state

[0017] RRC_INACTIVE: RRC inactive state

[0018] RRC_IDLE: RRC idle state

[0019] RAN: Radio Access Network, wireless access layer

[0020] PDCCH: Physical downlink control channel, physical downlink control channel

[0021] PUCCH: Physical Uplink Control Channel, physical uplink control channel

[0022] PUSCH: Physical Uplink Shared Channel, physical uplink shared channel

[0023] PBCH: Physical broadcast channel

[0024] SFN:System Frame Number system frame number

[0025] PDU: Protocol Data Unit

[0026] SSB: SS / PBCH block, synchronization signal / physical broadcast channel block

[0027] DCI: Downlink Control Information

[0028] C-RNTI: Cell Radio Network Temporary Identifier

[0029] RSRP: Reference Signal Received Power

[0030] RSRQ: Reference Signal Received Quality

[0031] SpCell: Special Cell, including PCell and PSCell

[0032] DC: Dual Connectivity

[0033] MCG: Master Cell Group

[0034] SCG: Secondary Cell Group

[0035] PCell: Primary Cell

[0036] PSCell: Primary SCG Cell SCG main cell

[0037] MIB: Master Information Block, main message block

[0038] DRX: Discontinuous Reception

[0039] SIB: System Information Block, system message block

[0040] gNB: the next Generation Node B, next generation base station

[0041] RLF: Radio Link Failure, radio link failure

[0042] SN: Sequence Number

[0043] CN: Core Network

[0044] SR: Scheduling Request

[0045] UL-SCH: Uplink Shared Channel, uplink shared channel

[0046] CSI: Channel State Information

[0047] SRS: Sounding Reference Signal, channel sounding reference signal

[0048] HARQ: Hybrid Automatic Repeat Request

[0049] MR: main receiver, main receiver

[0050] LP: Low Power

[0051] WUS: wake up signal

[0052] WUR: wake up receiver, wake up receiver

[0053] LR: low power receiver, low power receiver

[0054] LP-SS: Low Power Synchronisation Signal

[0055] LP-WUR: Low Power Wake-up Receiver

[0056] In the present invention, network (network or NW), base station (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 (NewRAT, NR) network, an enhanced long-term evolution eLTE network, or other networks defined in subsequent evolution versions of 3GPP.

[0057] In the present invention, the user equipment UE may refer to a device that supports user energy saving, may refer to a device that supports LP-WUS and / or LP-WUR and / or LP-SS, or may refer to other types of NR devices or LTE devices.

[0058] In the present invention, the terms "feedback," "submit," "report," "send," "transmit," "inform," "indicate," and "provide" may be used interchangeably. The terms "use," "make available," "apply," "implement," "enable," "activate," "perform," and "do" may be used interchangeably.

[0059] In the present invention, "associate", "correspond" and "map" can be used interchangeably.

[0060] In the present invention, receive, detect, and monitor can be used interchangeably.

[0061] In the present invention, "non-active or deactive", "sleep", "ultra deep sleep", "deactivate", "stop", and "exit" can be used interchangeably.

[0062] In the present invention, “activate”, “start”, “enable”, “use”, “enter”, and “wake up” can be used interchangeably.

[0063] In the present invention, "time" can be time, duration, period, time period, etc.

[0064] In the present invention, the "physical layer" may also be referred to as "layer one (L1)" or "lower layer" and can be used interchangeably.

[0065] In the present invention, "LP-WUR", "LR", and "WUR" can be used interchangeably.

[0066] In the present invention, "switch" and "change" can be used interchangeably.

[0067] It should be noted that in this specification, two things 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 and being included between the two, and they do not necessarily refer to completely different content.

[0068] Hereinafter, a description is given of related technologies of the present invention.

[0069] In an NR network, even when there is no data transmission, the user equipment (UE) can maintain a data connection with the network to achieve online network services at any time. For example, a user equipment in an idle or inactive state periodically detects whether the network has sent it a paging message. This requires the user equipment to regularly detect relevant paging messages, even if the paging message does not indicate data transmission with the user equipment or the paging message sent is not related to the user equipment. Such behavior consumes more user equipment power, thereby affecting the battery life and reducing the user experience.

[0070] A user device (UE) can use a low-power (LP) receiver to detect a low-power wake-up signal (LP-WUS) sent by a base station. This low-power auxiliary receiver is also called a low-power receiver (LR), a low-power wake-up receiver (LP-WUR), or a receiver for receiving LP-WUS. When there is no data transmission, the UE's main receiver (MR) remains in a dormant state to reduce the UE's power consumption. When data transmission is required, the UE wakes up the MR according to the LP-WUS and performs the appropriate data processing. The LP-WUS signal indicates the relevant information needed to wake up the UE, such as the UE's ID and the group information to which the UE belongs. Based on this information, the UE can determine whether it has been awakened by the LP-WUS. Only when the UE's LP-WUR detects the wake-up indication information for the UE does the UE wake up the MR to perform the relevant data transmission, such as detecting the paging PDCCH on the associated paging opportunity or transmitting the PRACH preamble within the corresponding window. This allows the UE to maintain a connection to the network with minimal power consumption and reduces network response latency. However, the coverage of LP-WUS may be small, and the user equipment may only be able to monitor LP-WUS when it is close to the base station.

[0071] In NR, to understand network quality, the UE needs to periodically measure the serving cell and neighboring cells to obtain cell quality. Even if the cell quality does not change, the UE still needs to perform periodic measurements, which results in power waste.

[0072] After supporting LR-WUR, when the user equipment uses LP-WUR, the user equipment can use the LP-WUR to measure the serving cell, specifically the low-power synchronization signal (LP-SS) sent by the base station, to obtain the quality of the serving cell. When the user equipment uses MR, the user equipment can use the MR to measure the serving cell, specifically the SSB sent by the base station to obtain the cell quality of the serving cell. The power consumption of LR-WUR is lower than that of MR, thereby achieving the purpose of reducing power consumption.

[0073] When using LP-WUR, neighboring cells may not be measured, or the measurement of neighboring cells may be relaxed (for example, by lengthening the interval between measurements, etc.) The user equipment uses MR to measure the quality of neighboring cells.

[0074] One possible method for determining when to enable LP-WUR is to base it 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 higher than a certain threshold, the UE can enable LP-WUR and may also disable MR, or have MR enter sleep mode. If the quality of the current serving cell deteriorates, for example, if the cell quality of the current serving cell measured based on MR and / or LP-WUR is lower than a certain threshold, the UE can wake up MR while deactivating LP-WUR.

[0075] S criterion for cell selection

[0076] The S criterion for cell selection is: Srxlev>0 and Squal>0.

[0077] Srxlev=Q rxlevmeas -(Q rxlevmin +Q rxlevminoffset )-P compensation -Qoffset temp ,

[0078] Squal=Q qualmeas -(Q qualmin +Q qualminoffset )-Qoffset temp .

[0079] Srxlev is the cell reception level value. Squal is the cell quality. rxlevmeas is the measured cell RSRP, Q qualmeas is the measured cell RSRQ, Qoffset temp Temporary offset value, Q rxlevmin is the minimum RSRP required by the cell, Q qualmin is the minimum RSRQ required by the cell, Q rxlevminoffset is the RSRP offset value, Q qualminoffset is the RSRQ offset value, P compensation is the power compensation value.

[0080] R criterion for cell reselection

[0081] During the cell reselection process, serving cells and neighboring cells need to be ranked. The Rs criterion is used for serving cells, while the Rn criterion is used for neighboring cells. Rs and Rn are calculated using the following formulas for cell ranking.

[0082] R s =Q meas，s +Q hyst -Qoffset temp

[0083] Rn =Q meas,n -Qoffset-Qoffset temp

[0084] Among them, Q meas,s is the RSRP measurement result of the serving cell, Q meas,n is the neighboring cell RSRP measurement result, Q hyst is the hysteresis value, Qoffset and Qoffset temp is the offset value.

[0085] Relaxation measurement

[0086] In 3GPP Release 16, relaxed measurements for RRC idle and inactive states were standardized and defined in the latest 3GPP standard, TS 38.304 (see Section 5.2.4.9). Relaxed measurements target neighboring cell measurements. The relaxed measurement criteria include low mobility and non-cell-edge. When a UE is requested to perform neighboring cell measurements, after obtaining the neighboring cell measurement results, it evaluates the low mobility and non-cell-edge criteria to determine whether relaxed measurements can be performed.

[0087] Low Movement Criteria: (Srxlev Ref -Srxlev) SearchDeltaP Among them, Srxlev Ref is the reference reception level value (RSRP) of the serving cell; Srxlev is the current reception level value of the serving cell, S SearchDeltaP The threshold value configured by the network for evaluating the low mobility criterion. SearchDeltaP If the low mobility criterion is met, the UE may perform relaxed measurement to perform neighbor cell measurement.

[0088] Non-cell edge criterion: Srxlev>S SearchThresholdP , and Squal>S SearchThresholdQ Among them, Srxlev is the current reception level value of the serving cell, Squal is the current quality value of the serving cell, S SearchThresholdP The RSRP threshold value configured by the network for evaluating the non-cell edge criterion, S SearchThresholdQ The RSRQ threshold configured by the network for evaluating the non-cell-edge criterion. If the UE meets the non-cell-edge criterion, the UE performs relaxed measurement to perform neighbor cell measurement.

[0089] The base station broadcasts the configuration parameters of relaxed measurement in RRC idle and inactive states through system messages, including the switches of low mobility assessment and non-cell edge assessment, low mobility criteria, and accurate assessment thresholds and assessment time parameters of non-cell edge.​

[0090] When the UE performs relaxed measurements, a relaxation measurement factor can be added on the basis of normal measurements, or a measurement factor different from normal measurements (such as a measurement factor larger than the measurement factor of normal measurements) can be used to increase the measurement time interval and / or increase the measurement evaluation time interval.

[0091] In 3GPP Release 17 and Release 18, Reduced Capabilities (RedCap) UEs and Enhanced Reduced Capabilities (eRedCap) UEs are supported. For RedCap UEs and eRedCap UEs, the relaxed measurement criteria include: a stationary criterion, and a non-cell-edge criterion in the stationary state.

[0092] Stationary criterion: (SrxleV RefStationary - Srxlev) < SSearchDeltaP-Stationary. Where, SrxlevRefStationary is the reference received level value of the serving cell; Srxlev is the current received level value of the serving cell, and SSearchDeltaP-Stationary is the threshold value configured by the network for evaluating the stationary criterion. If the UE satisfies the stationary criterion within a period of time (such as the duration value TSearchDeltaP-Stationary used to evaluate the satisfaction of the stationary criterion), the UE can perform relaxed measurements for neighbor cell measurements.

[0093] Non-cell-edge criterion in the stationary state: Srxlev > S SearchThresholdP2 , and Squal > S SearchThresholdQ2 . Where, Srxlev is the current received level value of the serving cell, Squal is the current quality value of the serving cell, S SearchThresholdP2 is the RSRP threshold value configured by the network for evaluating the non-cell-edge criterion in the stationary state, and S SearchThresholdQ is the RSRQ threshold value configured by the network for evaluating the non-cell-edge criterion in the stationary state. If the UE satisfies the non-cell-edge criterion in the stationary state, the UE can perform relaxed measurements for neighbor cell measurements.

[0094] In the low mobility criterion, non-cell-edge criterion, stationary criterion, and non-cell-edge criterion in the stationary state, the calculation methods of Srxlev and Squal are the same as those in the cell selection S criterion in the above text.

[0095] After the (e)RedCap UE obtains the neighbor cell measurement results, it evaluates the stationary criterion and / or the non-cell-edge criterion in the stationary state to determine whether relaxed measurement can be performed. If the relaxed measurement criteria are determined to be met, the (e)RedCap UE may perform relaxed measurement. The relaxed measurement factor used may be a different measurement factor from that of a normal UE (e.g., a larger measurement factor than that of a normal UE), or the relaxed measurement factor for the (e)RedCap UE may be added to the relaxed measurement of the normal UE.

[0096] This invention discusses when a UE activates / deactivates LP-WUR after its introduction, and how to perform neighbor cell measurements when LP-WUR is activated / deactivated. This invention enables timely and accurate activation / deactivation of LP-WUR, reducing unnecessary neighbor cell measurements and thus reducing UE power consumption.

[0097] In the following description, "enabling LP-WUR" may refer to starting to use LP-WUR, and / or starting to monitor / measure LP-WUS, and / or starting to monitor / measure LP-SS, and / or enabling LP-WUS, and / or enabling LP-SS. "Disabling LP-WUR" refers to stopping using LP-WUR, and / or stopping monitoring / measuring LP-WUS, and / or stopping monitoring / measuring LP-SS, and / or disabling LP-WUS, and / or disabling LP-SS. In the following description, "using LP-WUR" and "based on LP-SS" can be used interchangeably. "Relaxed measurement" refers to performing relaxed measurement to perform neighboring cell measurement, that is, relaxing neighboring cell measurement. "Normal measurement" refers to performing normal measurement to perform neighboring cell measurement, that is, performing neighboring cell measurement normally. Neighboring cell measurement includes but is not limited to: same-frequency cell measurement, NR inter-frequency cell measurement, and inter-RAT cell measurement. The cell reception level value (Srxlev) is obtained by calculating the RSRP of the cell, and the cell quality value (Squal) is obtained by calculating the RSRQ of the cell. The calculation method can be the same as the cell selection S criterion mentioned above, or it can be different.

[0098] In the following embodiments, the same nouns may represent the same meanings, and the same parameter names may represent the same meanings.

[0099] The following first describes the outline of the present invention with reference to the accompanying drawings. The embodiments described here are only part of the embodiments of the present invention, and other embodiments are also included in this specification.

[0100] Figure 1 is a flowchart of a method for starting and stopping a low-power mode according to an embodiment of the present invention. In low-power mode, a user device uses a low-power receiver to receive a low-power wake-up signal and / or uses a low-power synchronization signal to perform relaxation measurements. That is, in the present invention, low-power mode refers to a mode in which a low-power receiver is used to receive a low-power wake-up signal and / or a low-power synchronization signal is used to perform relaxation measurements. Hereinafter, the so-called "enabling low-power mode" may refer to enabling LP-WUS and / or starting to monitor / measure LP-SS and using LP-SS to perform relaxation measurements. Similarly, the so-called "disabling low-power mode" may refer to disabling LP-WUS and / or stopping monitoring / measuring LP-SS and stopping using LP-SS to perform relaxation measurements.

[0101] As shown in FIG1 , in step 101 , a user equipment receives an RRC message sent from a network.

[0102] In step 102, the user equipment determines whether the RRC message includes a joint criterion indication for indicating whether to enable the low power consumption mode by jointly considering the mobility of the user equipment and the quality of the serving cell.

[0103] If the judgment result in step 102 is yes, in step 105, the user equipment determines whether the mobility of the user equipment meets the mobility criterion in the relaxed measurement criterion, and determines whether the quality of the serving cell where the user equipment is located meets the quality criterion in the relaxed measurement criterion.

[0104] Here, the mobility criterion may include at least one of the following: a low mobility criterion; a stationary criterion; a low mobility criterion for the low power consumption mode; a stationary criterion for the low power consumption mode. The quality criterion may include at least one of the following: a non-cell edge criterion; a non-cell edge criterion in a stationary state; an enhanced relaxed measurement criterion; a non-cell edge criterion for the low power consumption mode; a non-cell edge criterion in a stationary state for the low power consumption mode; an enhanced relaxed measurement criterion for the low power consumption mode. Hereinafter, without distinguishing between mobility criteria and quality criteria, they are collectively referred to as relaxed measurement criteria.

[0105] The method for determining whether the mobility criteria and the quality criteria are satisfied is described in detail above and in the following embodiments. Furthermore, regarding the reference values ​​used for the mobility criteria and the quality criteria, if the low power mode has just been disabled, the reference values ​​used for performing the determination can be re-determined, and the re-determined reference values ​​can be used to determine whether to re-enable the low power mode.

[0106] If it is determined that the mobility of the user equipment meets the mobility criterion in the relaxed measurement criterion and the quality of the serving cell meets the quality criterion in the relaxed measurement criterion, in step 107 , the low power consumption mode is enabled.

[0107] Thereby, the user equipment can appropriately enable the low power consumption mode.

[0108] Optionally, after the low power consumption mode is enabled, at least one of the mobility criterion and the quality criterion may continue to be judged in step 205. Furthermore, regarding the reference value for the user's judgment, if the low power consumption mode has just been enabled, the reference value for the judgment may be re-determined for the mobility criterion and the quality criterion, and the re-determined reference value may be used to determine whether to disable the low power consumption mode again. The method for re-determining the reference value will be described in detail in the following embodiment 3.

[0109] When the mobility of the user equipment does not meet the mobility criterion, or the quality of the serving cell does not meet the quality criterion, in step 207, the low power consumption mode is deactivated.

[0110] In another example, in addition to the determination in step 105 , it may also be determined whether neighbor cell measurement is being performed. When the determination result in step 105 is yes and no neighbor cell measurement is being performed, the low power consumption mode is enabled.

[0111] The process of disabling the low power consumption mode is not limited to the process shown in Figure 1. Another process of disabling the low power consumption mode is provided in Figure 2. Figure 2 is a flow chart of a method for starting and stopping the low power consumption mode according to another embodiment of the present invention.

[0112] As shown in Figure 2, after the low power consumption mode is enabled, it may be determined whether a specific condition is met in step 203. Here, the specific condition is a condition that is unrelated to the mobility of the user equipment and the quality of the serving cell.

[0113] For example, the specific condition may include at least one of the following: receiving a low-power wake-up signal instructing the primary receiver to wake up; the presence of a pending process requiring the primary receiver to execute; the presence of pending information requiring the primary receiver to receive; and being outside the coverage of the low-power receiver. A more specific example of the specific condition is described in Example 4 below.

[0114] When certain conditions are met, in step 205 , the low power consumption mode is deactivated regardless of the mobility of the user equipment and the quality of the serving cell.

[0115] In step 207, after the low power consumption mode is deactivated due to the satisfaction of a specific condition, a relaxation measurement is performed. Here, if the relaxation measurement was being performed before the low power consumption mode was deactivated, the relaxation measurement may continue to be performed. In another example, it may be determined again whether the mobility of the user equipment and / or the quality of the serving cell meet the relaxation measurement criteria, and if so, the relaxation measurement is performed.

[0116] Hereinafter, several embodiments of the present invention for solving the above-mentioned problems will be described in detail. In the following embodiments, when enumeration is involved, the enumerated items may include and be included in one another, rather than being mutually exclusive.

[0117] Example 1

[0118] Optionally, in step 1, the UE receives an RRC message (such as an RRC reconfiguration message and / or a system message) sent by the network. Optionally, the RRC message includes a joint criterion indication, which is used to indicate whether to jointly consider the serving cell quality and UE mobility.

[0119] Optionally, in step 2, the UE determines whether to enable LP-WUR.

[0120] Optionally, (the UE is using MR) if the UE satisfies at least one of the following conditions, LP-WUR is enabled, and / or switched from MR to LP-WUR, and / or MR is disabled, and / or serving cell measurement is performed using LP-WUR:

[0121] - No neighbor cell measurement / evaluation / detection is ongoing;

[0122] - No normal neighbor cell measurement / assessment / detection is ongoing;

[0123] -Neighboring cell measurement / assessment / detection has been completed;

[0124] -Normal neighbor cell measurement / assessment / detection has been completed;

[0125] - the RRC message includes a joint criterion indication;

[0126] - the joint criterion indication instructs the UE to perform a joint criterion determination (e.g., the joint indication is set to TRUE);

[0127] -Satisfy relaxation criteria.

[0128] Optionally, neighbor cell measurement includes but is not limited to: intra-frequency cell measurement, NR inter-frequency cell measurement, and inter-RAT cell measurement.

[0129] Optionally, the relaxation criteria include at least one of the following:

[0130] - Low movement criteria;

[0131] - non-cell edge criteria;

[0132] -Station criterion;

[0133] - Non-cell edge criteria in static state;

[0134] - Enhanced relaxation measurement criteria.

[0135] The meanings of the low mobility criterion, the non-cell edge criterion, the stationary criterion, and the non-cell edge criterion in the stationary state are the same as those defined in the above related technologies and are not repeated here.

[0136] Optionally, when the RRC message includes a joint criterion indication, and / or the joint criterion indication instructs the UE to perform a joint criterion judgment (for example, the joint indication is set to TRUE), the UE judges the low mobility criterion and / or the stationary criterion, and when the mobility criterion and / or the stationary criterion are met, enables LP-WUR, and / or switches from MR to LP-WUR, and / or disables MR, and / or uses LP-WUR to perform service cell measurements.

[0137] Optionally, LP-WUR is used to perform serving cell measurements. If the UE determines through evaluation that relaxed measurements can be performed to perform neighboring cell measurements, the LP-WUR relaxed measurement factor can be added on the basis of the relaxed measurement of version 16 / 17, or a measurement factor different from the relaxed measurement of version 16 / 17 (for example, a measurement factor larger than the measurement factor of the relaxed measurement of version 16 / 17) can be used to further increase the measurement time interval and / or increase the measurement evaluation time interval, etc.

[0138] Optionally, the enhanced relaxed measurement criteria may include an enhanced non-cell edge criterion. A description example: Srxlev>SSearchThresholdP-enhanced, and Squal>SSearchThresholdQ-enhanced. Wherein, Srxlev is the current reception level value of the serving cell, Squal is the current quality value of the serving cell, SSearchThresholdP-enhanced is the RSRP threshold value configured by the network for evaluating the enhanced non-cell edge criterion (which may be included in the RRC message), and SSearchThresholdQ-enhanced is the RSRQ threshold value configured by the network for evaluating the enhanced non-cell edge criterion (which may be included in the RRC message). If the UE meets the enhanced non-cell edge criterion, the UE may perform enhanced relaxed measurement to perform neighboring cell measurement.

[0139] Optionally, the enhanced relaxation measurement criterion may further include an enhanced mobility criterion. An example description: (SrxlevRef-enhanced - Srxlev) < SSearchDeltaP-enhanced. Where SrxlevRef-enhanced is the reference received level value of the serving cell; Srxlev is the currently received level value of the serving cell, and S SearchDeltaP- enhanced is the threshold value for evaluating the enhanced mobility criterion configured by the network (which may be included in the RRC message). Optionally, if the UE satisfies the enhanced mobility criterion within a period of time (e.g., the time length value TSearchDeltaP-enhanced for evaluating the satisfaction of the enhanced mobility criterion, which may be included in the RRC message), the UE may perform enhanced relaxation measurement for neighbor cell measurement.

[0140] Among them, the enhanced relaxation measurement may refer to adding an enhanced relaxation measurement factor on the basis of the relaxation measurement in Release 16 / 17, or adopting a measurement factor different from the relaxation measurement in Release 16 / 17 (such as a measurement factor larger than the measurement factor of the relaxation measurement in Release 16 / 17) to further increase the measurement time interval and / or increase the measurement evaluation time interval, etc.

[0141] Embodiment 2

[0142] Optionally, in step one, the UE receives an RRC message (such as an RRC reconfiguration message and / or a system message) sent by the network. Optionally, the message includes a joint criterion indication for indicating whether to jointly consider the serving cell quality and UE mobility.

[0143] Optionally, in step two, the UE determines whether to deactivate the LP-WUR.

[0144] Optionally, (when the UE is using the LP-WUR) under at least one of the following conditions for the UE, enable MR, and / or switch from LP-WUR to MR, and / or deactivate the LP-WUR, and / or perform serving cell measurement using MR:

[0145] - Does not satisfy the low mobility criterion;

[0146] - Does not satisfy the stationary criterion;

[0147] - Does not satisfy the LP-WUR low mobility criterion; [[ID=2८]]

[0148] - Does not satisfy the LP-WUR non-cell-edge criterion;

[0149] - Does not satisfy the LP-WUR stationary criterion;

[0150] - does not meet the enhanced relaxation measurement criteria;

[0151] -Neighbor cell measurements need to be performed.

[0152] Here, the LP-WUR low mobility criterion, the LP-WUR stationary criterion, and the LP-WUR non-cell edge criterion are criteria for LP-WUR configuration.

[0153] Optionally, an example of a description of the LP-WUR low mobility criterion is: (Srxlev Ref-LR -Srxlev) SearchDeltaP-LR Among them, Srxlev Ref-LR is the reference reception level value measured by LP-WUR (or based on LP-SS) in the serving cell; Srxlev is the current reception level value measured by LP-WUR (or based on LP-SS) in the serving cell, S SearchDeltaP-LR The threshold value configured by the network for evaluating the LP-WUR low mobility criterion (which may be included in the RRC message). Optionally, if the UE SearchDeltaP-LR The time length value used for LP-WUR evaluation of the low mobility criteria is met (which can be included in the RRC message). If the LP-WUR low mobility criteria are met, the UE can perform relaxed measurement to perform neighbor cell measurement.

[0154] Optionally, an example of a description of the LP-WUR non-cell edge criterion is: Srxlev>S SearchThresholdP-LR , and Squal>S SearchThresholdQ-LR Among them, Srxlev is the current reception level value measured by the serving cell using LP-WUR (or based on LP-SS), Squal is the current quality value measured by the serving cell using LP-WUR (or based on LP-SS), S SearchThresholdP-LR RSRP threshold value configured by the network for evaluating the LP-WUR non-cell edge criterion (may be included in the RRC message). SearchThresholdQ-LR The RSRQ threshold value configured by the network for evaluating the LP-WUR non-cell edge criterion (which may be included in the RRC message) If the UE meets the LP-WUR non-cell edge criterion, the UE may perform relaxed measurement to perform neighbor cell measurement.

[0155] An example of describing the LP-WUR stationary criterion: (S rxlevRefStationary -Srxlev) SearchDeltaP ​​-Stationary. Among them, SrxlevRefStationary-LR is the reference reception level value measured by the serving cell with LP-WUR (or measured based on LP-SS); Srxlev is the current reception level value measured by the serving cell with LP-WUR (or measured based on LP-SS), and SSearchDeltaP-Stationary-LR is the threshold value configured by the network for evaluating the LR-WUR stationary criterion (which can be included in the RRC message). If the UE meets the LP-WUR stationary criterion within a period of time (for example, TSearchDeltaP-Stationary-LR is used to evaluate the time length value that the LP-WUR stationary criterion is met, (which can be included in the RRC message). If the UE meets the LP-WUR stationary criterion, the UE can perform relaxed measurement to perform neighboring cell measurement.

[0156] Optionally, when the RRC message includes a joint criterion indication, and / or the joint criterion indication instructs the UE to perform a joint criterion judgment (for example, the joint indication is set to TRUE), the UE judges the LP-WUR low mobility criterion and / or the LP-WUR stationary criterion, and when the LP-WUR mobility criterion or the LP-WUR stationary criterion is not met, enables MR, and / or switches from LP-WUR to MR, and / or disables LP-WUR, and / or uses MR to perform service cell measurements.

[0157] Optionally, the “relaxation measurement” in this embodiment refers to the relaxation measurement of version 16 / 17, or refers to the enhanced relaxation measurement described in Example 1.

[0158] The meanings of the low mobility criterion, the non-cell edge criterion, the stationary criterion, and the non-cell edge criterion in the stationary state are the same as those defined in the above related technologies and are not repeated here.

[0159] Example 3

[0160] Optionally, in the low mobility criterion (and / or the stationary criterion, and / or the enhanced relaxation criterion), the UE sets the reference value of the serving cell to the current value of the serving cell when at least one of the following conditions is met. In other words, the current value of the serving cell is used as the reference value of the serving cell:

[0161] - The receiver (used, or measuring the serving cell) changes, for example, from LP-WUR to MR, or from MR to LP-WUR;

[0162] - The measurement reference signal (used, or used to measure the serving cell) changes, for example, from SSB to LP-SS, or from LP-SS to SSB.

[0163] Optionally, when the receiver (used or measuring the serving cell) changes from MR to LP-WUR, or when the measurement reference signal (used or measuring the serving cell) changes from SSB to LP-SS, the UE performs at least one of the following operations:

[0164] - Add or subtract an offset value from the reference value of the serving cell;

[0165] - Add or subtract an offset value from the current value of the serving cell.

[0166] Optionally, the offset value may be configured by the network, for example, via an RRC message (such as a system message or an RRC reconfiguration message).

[0167] Optionally, the reference value of the serving cell is one or more of the following: a reference reception level value of the serving cell (such as Srxlev Ref ), a reference RSRP of the serving cell, and a reference quality of the serving cell (e.g., RSRQ). The current value of the serving cell is one or more of the following: a current reception level value of the serving cell (e.g., Srxlev), a current RSRP of the serving cell, and a current quality of the serving cell (e.g., RSRQ).

[0168] The meanings of the low mobility criterion, the non-cell edge criterion, the stationary criterion, and the non-cell edge criterion in the stationary state are the same as those defined in the above related technologies and are not repeated here.

[0169] Example 4

[0170] This embodiment describes the case where LP-WUS is disabled not due to UE mobility or cell quality.

[0171] Optionally, when the UE deactivates LP-WUR due to at least one of the following reasons, the UE performs relaxed measurement to perform neighbor cell measurement:

[0172] - MR is required to execute relevant processes;

[0173] - LP-WUS is received;

[0174] -Receive a paging message;

[0175] -Receive a packet paging message;

[0176] -Receive a packet paging indication;

[0177] - Receiving a Paging Early Indication (PEI);

[0178] -There is uplink or downlink data to transmit / receive;

[0179] -The system message is invalid and needs to be obtained;

[0180] -Neighboring cell measurements are required;

[0181] -Not covered by LP-WUR.

[0182] Optionally, if the UE deactivates LP-WUR due to at least one of the above reasons, the UE determines the UE mobility (low mobility criterion and / or stationary criterion) and / or the serving cell quality (non-cell edge criterion and / or stationary state non-cell edge criterion). If the UE mobility and / or serving cell quality are met, the UE performs relaxed measurement to perform neighbor cell measurement; otherwise, the UE performs normal measurement to perform neighbor cell measurement.

[0183] Alternatively, optionally, when the UE deactivates LP-WUR due to at least one of the following conditions, the UE performs normal measurement to perform neighbor cell measurement:

[0184] - Does not meet the LP-WUR low mobility criteria;

[0185] - does not meet the LP-WUR stationary criterion;

[0186] - Does not meet the low mobility criteria;

[0187] - does not meet the stationary criterion;

[0188] - Does not meet the LP-WUR non-cell edge criterion;

[0189] - does not meet the non-cell edge criterion;

[0190] - Does not meet the stationary state non-cell edge criteria

[0191] - The enhanced relaxation measurement criteria are not met.

[0192] Optionally, the relaxation measurement may refer to the enhanced relaxation measurement described in Example 1, or the relaxation measurement of the R16 / 17 version.

[0193] The meanings of the low mobility criterion, the non-cell edge criterion, the stationary criterion, and the non-cell edge criterion in the stationary state are the same as those defined in the above related technologies and are not repeated here.

[0194] The meanings of the LP-WUR low mobility criterion, the LP-WUR stationary criterion, and the LP-WUR non-cell edge criterion are the same as those in Example 2. The enhanced relaxed measurement criterion is the same as that in Example 1.

[0195] Example 5

[0196] Optionally, when the UE uses LP-WUR or LP-SS to perform service cell measurements, the duration for which the low mobility criterion (and / or stationary criterion, and / or LP-WUR low mobility criterion, and / or LP-WUR stationary criterion) is satisfied is T1; when the UE uses MR or SSB to perform service cell measurements, the duration for which the low mobility criterion (and / or stationary criterion) is satisfied is T2. Optionally, T1 is counted from the time the UE resides in a new cell and LP-WUR is enabled, and T2 is counted from the time the UE resides in a new cell and MR is enabled. T1 and T2 are the durations for which the low mobility criterion (and / or stationary criterion) is continuously met. If LP-WUR is currently being used, once the low mobility criterion or the stationary criterion is not met, T1 is cleared and restarted. If MR is currently being used, once the low mobility criterion or the stationary criterion is not met, T2 is cleared and restarted.

[0197] Optionally, the UE determines at least one of the following conditions:

[0198] - The receiver (used, or measuring the serving cell) changes, for example, from LP-WUR to MR, or from MR to LP-WUR;

[0199] - The measurement reference signal (used, or used to measure the serving cell) changes, for example, from SSB to LP-SS, or from LP-SS to SSB.

[0200] In the case where at least one of the above conditions is met, if the UE meets at least one of the following conditions, the UE performs relaxed measurement to perform neighbor cell measurement:

[0201] -The sum of T1+T2 is greater than (or greater than or equal to) the duration value (T SearchDeltaP );

[0202] The sum of T1 + T2 is greater than (or greater than or equal to) the duration used to evaluate the stationary criterion (TSearchDeltaP-Stationary);

[0203] The sum of T1+T2 is greater than (or greater than or equal to) the duration value (TSearchDeltaP-enhanced) used to evaluate whether the enhanced mobility criterion is met.

[0204] Optionally, the relaxation measurement may refer to the enhanced relaxation measurement described in Example 1, or the relaxation measurement of the R16 / 17 version.

[0205] The meanings of the low mobility criterion, the non-cell edge criterion, the stationary criterion, and the non-cell edge criterion in the stationary state are the same as those defined in the above related technologies and are not repeated here.

[0206] Example 6

[0207] Optionally, the UE receives an RRC message (eg, an RRC release message, and / or an RRC reconfiguration message, and / or a system message) sent by the network. The RRC message carries the first indication.

[0208] The first indication is used to indicate at least one of the following meanings:

[0209] - Which receiver (MR and / or LP-WUR) is used to perform serving cell measurements;

[0210] - Which measurement reference signal (SSB and / or LP-SS) is used to perform serving cell measurements;

[0211] - Perform serving cell measurements using LP-WUR;

[0212] - Perform serving cell measurements using LP-SS;

[0213] -Offload serving cell measurements to LP-WUR.

[0214] Optionally, if the first indication indicates that the UE is to use LP-WUR (or LP-SS) to perform service cell measurements, or indicates that the UE service cell measurements are shared to LP-WUR, the UE enables LP-WUR, and / or disables MR, and / or switches from MR to LP-WUR, and / or the UE uses LP-WUR to perform service cell measurements.

[0215] Example 7

[0216] When the UE is using LP-WUR to measure the serving cell, in the judgment of the S criterion for cell selection, after calculating the serving cell reception level value (Srxlev), an offset value for LP-WUR is added or subtracted to obtain the LP-WUR serving cell reception level value (e.g. Srxlev LR ), after calculating the serving cell quality value (Squal), add or subtract an offset value for LP-WUR to obtain the LP-WUR serving cell quality value (e.g. Squal LR If the LP-WUR serving cell receives a level value (e.g. Srxlev LP-WUR ) is greater than 0, and the LP-WUR serving cell quality value (e.g. Squal LP-WUR ) is greater than 0, the S criterion is considered to be satisfied.

[0217] When the UE is using LP-WUR to measure the serving cell, in the Rs criterion judgment of the cell reselection, after calculating the Rs value of the serving cell used for cell sorting, an offset value for LP-WUR is added or subtracted to obtain the Rs value of the LP-WUR serving cell (for example, Rs LR ). The LP-WUR serving cell Rs value is used as the basis for ranking the quality of neighboring cells.

[0218] Example 8

[0219] For carriers (frequencies) included in the idle measurement configuration variable (VarMeasIdleConfig), LP-WUR is not applied, or the judgment condition / criteria for enabling LP-WUR are not applied.

[0220] If the UE supports dual connectivity or carrier aggregation between the carrier of the current serving cell and other carriers, LP-WUR is not applied, or the judgment conditions / criteria for enabling LP-WUR are not applied, or LP-WUR is not applied to the carrier of the serving cell (or the judgment conditions / criteria for enabling LP-WUR are not applied).

[0221] Example 9

[0222] Optionally, (if the UE is using LP-WUR) relaxed serving cell measurement may be performed if the UE satisfies at least one of the following conditions:

[0223] -Meet the LP-WUR low mobility criteria;

[0224] -Satisfy the LP-WUR stationary criterion;

[0225] -Meet the LP-WUR non-cell edge criterion;

[0226] - Satisfy enhanced relaxation measurement criteria.

[0227] The meanings of the LP-WUR low mobility criterion, the LP-WUR stationary criterion, and the LP-WUR non-cell edge criterion are the same as those in Example 2 and are not repeated here. The meaning of the enhanced relaxed measurement criterion is the same as that in Example 1.

[0228] When the UE performs relaxed serving cell measurement, a relaxed measurement factor may be added on the basis of normal serving cell measurement, or a measurement factor different from the normal serving cell measurement (e.g., a measurement factor larger than the measurement factor of the normal measurement) may be used to increase the measurement time interval and / or increase the measurement evaluation time interval.

[0229] Figure 3 is a simplified block diagram of the user equipment (UE) according to the present invention. As shown in Figure 3, the user equipment (UE) 300 includes a processor 301 and a memory 302. Processor 301 may include, for example, a microprocessor, a microcontroller, or an embedded processor. Memory 302 may include, for example, a volatile memory (such as a random access memory (RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory. Memory 302 stores program instructions. When executed by processor 301, these instructions may execute the above-described method performed by the user equipment, as described in detail in the present invention.

[0230] The program running on the device according to the present invention can be a program that controls the central processing unit (CPU) to enable the computer to implement the functions of the embodiments of the present invention. The program or the information processed by the program can be temporarily stored in a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory systems.

[0231] The program for realizing each embodiment of the present invention function can be recorded on a computer-readable recording medium. Can realize corresponding function by making a computer system read the program recorded on the recording medium and executing these programs. So-called "computer system" herein can be the computer system embedded in the device, can include operating system or hardware (such as peripheral device). "Computer-readable recording medium" can be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a short-term dynamic storage program recording medium or any other recording medium that is computer-readable.

[0232] The various features or functional modules of the devices used in the above embodiments can be implemented or executed by circuits (e.g., single-chip or multi-chip integrated circuits). The circuits designed to perform the functions described in this specification may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above devices. The 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 the event that new integrated circuit technologies have emerged to replace existing integrated circuits due to advances in semiconductor technology, one or more embodiments of the present invention may also be implemented using these new integrated circuit technologies.

[0233] Furthermore, the present invention is not limited to the above-described embodiments. 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.

[0234] 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-described embodiments, and the present invention also includes any design changes that do not deviate from the main purpose of the present invention. In addition, 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 in the technical scope of the present invention. In addition, components with the same effect described in the above embodiments can be replaced with each other.

Claims

1. A method for starting and stopping a low power consumption mode performed by a user equipment, wherein in the low power consumption mode, the user equipment uses a low power consumption receiver to receive a low power consumption wake-up signal and / or uses a low power consumption synchronization signal to perform a relaxation measurement, the method comprising: Receive RRC messages sent from the network; In a case where the RRC message includes a joint criterion indication for indicating that the low power consumption mode is to be enabled by jointly considering the mobility of the user equipment and the quality of the serving cell, determining whether the mobility of the user equipment satisfies a mobility criterion in a relaxed measurement criterion, and determining whether the quality of the serving cell where the user equipment is located satisfies a quality criterion in the relaxed measurement criterion; as well as In a case where it is determined that the mobility of the user equipment meets a mobility criterion in the relaxed measurement criterion and the quality of the serving cell meets a quality criterion in the relaxed measurement criterion, the low power consumption mode is enabled.

2. The method according to claim 1, further comprising: Determine whether there is any ongoing neighboring cell measurement; as well as In the absence of ongoing neighbor cell measurement, the low power consumption mode is enabled.

3. The method according to claim 1, further comprising: In a case where the low power consumption mode has just been deactivated, reference values ​​for performing judgment are re-determined for the mobility criterion and the quality criterion, and the re-determined reference values ​​are used to determine whether to enable the low power consumption mode again.

4. The method according to claim 1, wherein After enabling the low power consumption mode, the method further includes: If it is determined that the mobility of the user equipment does not meet the mobility criterion in the relaxed measurement criterion, or the quality of the serving cell does not meet the quality criterion in the relaxed measurement criterion, the low power consumption mode is deactivated.

5. The method according to claim 1, further comprising: In a case where the low power consumption mode has just been enabled, reference values ​​for performing judgment are re-determined for the mobility criterion and the quality criterion, and the re-determined reference values ​​are used to determine whether to deactivate the low power consumption mode again.

6. The method according to claim 3 or 5, wherein re-determining the reference value for performing the judgment comprises any one of the following: using the current value of the serving cell as a reference value for performing the judgment; subtracting or adding a first offset value from a current value of the serving cell as a reference value for performing the judgment; A value obtained by subtracting or adding the second offset value from the current reference value is used as a reference value for performing judgment.

7. The method according to any one of claims 1 to 5, wherein After enabling the low power consumption mode, the following steps are further included: determining whether a specific condition is satisfied, where the specific condition is a condition unrelated to the mobility of the user equipment and the quality of the serving cell; When the specific condition is met, deactivating the low power consumption mode regardless of the mobility of the user equipment and the quality of the serving cell; and After the low power consumption mode is deactivated due to the specific condition being met, a relaxation measurement is performed.

8. The method according to claim 7, wherein: The specific conditions include at least one of the following: receiving a low power wake-up signal instructing a main receiver to wake up; There is a process to be executed that requires the use of a primary receiver; There is information to be received that needs to be received using the primary receiver; Not within the coverage area of ​​the low-power receiver.

9. The method according to any one of claims 1 to 5, wherein The mobility criterion includes at least one of the following: Low movement criteria; Stationary criterion; low mobility criteria for the low power mode; For the quiescent criterion of the low power mode, The quality criteria include at least one of the following: Non-cell edge criterion; Non-cell edge criteria in stationary state; Enhanced relaxation measurement criteria; non-cell-edge criteria for the low power mode; Non-cell edge criteria in a stationary state for the low power consumption mode; Enhanced relaxed measurement criteria for the low power mode.

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

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