Low-power reception method and user equipment

Abstract

The present invention provides a low-power reception method executed by a user equipment, and a user equipment. The low-power reception method comprises: receiving, from a network, low-power reception configuration information comprising a serving cell quality threshold; and when the serving cell quality of a serving cell corresponding to a user equipment is not lower than the serving cell quality threshold, and when there is no ongoing process using a main receiver of the user equipment, disabling the main receiver, and enabling a low-power wake-up receiver to monitor for a low-power wake-up signal used to wake up the main receiver.

Description

Low power consumption receiving method and user equipment Technical Field

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

[0002] Energy conservation in user equipment (UE) devices 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 Release 18 LP-WUS / WUR study project at the RAN plenary meeting. For updated details, see non-patent document RP-222644 Revised SID: Study on low-power wake-up signal and receiver for NR. The primary goal of this study project is 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. When no data is being transmitted, the UE's main 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 instruction and performs the appropriate data processing. This achieves UE energy conservation and reduces service latency.

[0003] Summary of the Invention

[0004] The object of the present invention is to provide a low-power receiving method and user equipment capable of avoiding frequent switching between a main receiver and a low-power wake-up receiver.

[0005] According to one aspect of the present invention, a low-power reception method performed by a user equipment is provided, comprising: receiving low-power reception configuration information including a service cell quality threshold from a network; and when the service cell quality of a service cell corresponding to the user equipment is not lower than the service cell quality threshold and there is no ongoing process using a main receiver of the user equipment, deactivating the main receiver and enabling a low-power wake-up receiver to listen for a low-power wake-up signal for waking up the main receiver.

[0006] According to the present invention, frequent switching between a main receiver and a low-power wake-up receiver can be avoided while reducing the power consumption of a user equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] FIG1 is a flowchart of a low-power receiving method according to an embodiment of the present invention.

[0008] FIG2 is a flowchart of a low-power reception method executed by a user equipment in an RRC idle state or an RRC inactive state according to another embodiment of the present invention.

[0009] FIG3 is a flowchart of a low-power reception method executed by a user equipment in an RRC connected state according to another embodiment of the present invention.

[0010] FIG4 is a flowchart of a low-power receiving method according to another embodiment of the present invention.

[0011] FIG5 is a simplified structural block diagram of a user equipment UE according to the present invention. DETAILED DESCRIPTION

[0012] 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.

[0013] 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.

[0014] UE:User Equipment

[0015] NR: New Radio, a new generation of wireless technology

[0016] MAC: Medium Access Control

[0017] MAC CE: MAC control element

[0018] RRC: Radio Resource Control

[0019] RRC_CONNECTED: RRC connected state

[0020] RRC_INACTIVE: RRC inactive state

[0021] RRC_IDLE: RRC idle state

[0022] RAN: Radio Access Network, wireless access layer

[0023] PDCCH: Physical downlink control channel, physical downlink control channel

[0024] PUCCH: Physical Uplink Control Channel, physical uplink control channel

[0025] PUSCH: Physical Uplink Shared Channel, physical uplink shared channel

[0026] PBCH: Physical broadcast channel

[0027] SFN:System Frame Number

[0028] PDU: Protocol Data Unit

[0029] SSB: SS / PBCH block, synchronization signal / physical broadcast channel block

[0030] DCI: Downlink Control Information

[0031] C-RNTI: Cell Radio Network Temporary Identifier

[0032] RSRP: Reference Signal Received Power

[0033] RSRQ: Reference Signal Received Quality

[0034] SpCell: Special Cell, including PCell and PSCell

[0035] DC: Dual Connectivity

[0036] MCG: Master Cell Group

[0037] SCG: Secondary Cell Group

[0038] PCell: Primary Cell

[0039] PSCell: Primary SCG Cell SCG main cell

[0040] MIB: Master Information Block, main message block

[0041] DRX: Discontinuous Reception

[0042] DTX: Discontinuous Transmission

[0043] SIB: System Information Block, system message block

[0044] NES: network energy saving

[0045] gNB: the next Generation Node B

[0046] RLF: Radio Link Failure, radio link failure

[0047] SN: Sequence Number

[0048] CN: Core Network

[0049] SR: Scheduling Request

[0050] UL-SCH: Uplink Shared Channel, uplink shared channel

[0051] BWP: Bandwidth Part, bandwidth part

[0052] CSI: Channel State Information

[0053] SRS: Sounding Reference Signal, channel sounding reference signal

[0054] HARQ: Hybrid Automatic Repeat Request

[0055] TAG: Timing Advance Group, timing advance group

[0056] PTAG: Primary Timing Advance Group

[0057] STAG: Secondary Timing Advance Group

[0058] MR: main receiver, main receiver

[0059] LP: low power, low power consumption

[0060] WUS: wake up signal

[0061] WUR: wake up receiver, wake up receiver

[0062] LR: lowor power receiver, low power receiver

[0063] MBS: Multicast / Broadcast Service

[0064] 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 (New RAT, NR) network, an enhanced long-term evolution eLTE network, or other networks defined in subsequent evolution versions of 3GPP.

[0065] 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 / WUR, or may refer to other types of NR devices or LTE devices.

[0066] 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.

[0067] In the present invention, "associate", "correspond" and "map" can be used interchangeably.

[0068] In the present invention, receive, detect, and monitor can be used interchangeably.

[0069] In the present invention, “non-active or deactive”, “sleep”, “ultra deep sleep”, “deactivate”, and “stop” can be used interchangeably.

[0070] In the present invention, "activate", "start" and "enable" can be used interchangeably.

[0071] In the present invention, "time" can be time, duration, period, etc.

[0072] In the present invention, the "physical layer" may also be referred to as "layer one (L1)" or "lower layer" and can be used interchangeably.

[0073] In the present invention, "LP-WUR", "LR", and "WUR" can be used interchangeably.

[0074] 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.

[0075] Hereinafter, a description is given of related technologies of the present invention.

[0076] 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.

[0077] A user device (UE) can use a low-power (LP) auxiliary receiver to detect a low-power wake-up signal (LP-WUS) sent by a base station. This 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 required 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 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 delays. However, the coverage of LP-WUS may be limited, and the user device may only be able to monitor LP-WUS when it is close to the base station. This approach presents several issues that need to be addressed, such as when the user device starts using LP-WUS (i.e., starts monitoring LP-WUS), when it stops using LP-WUS, when the MR enters the sleep state, and when the MR cannot enter the sleep state.

[0078] As for when to enable LP-WUS / WUR, one possible method is based on the quality of the serving cell. If the current serving cell is a cell of good quality, for example, the cell quality of the current serving cell measured based on MR and / or LR is higher than (or equal to) a certain threshold value, the UE can enable LP-WUS / WUR, and can also stop MR, or MR goes to sleep. If the quality of the current serving cell deteriorates, for example, the cell quality of the current serving cell measured based on MR and / or LR is lower than a certain threshold value, the UE can wake up MR and disable LP-WUS / WUR at the same time. Enable LP-WUS / WUR and disable MR; disable LP-WUS / WUR and enable MR.

[0079] This process can be considered a switchover between LP-WUS / WUR and MR. If the switchover is determined solely based on a threshold, reference signal jitter, for example, could result in the serving cell being judged to be of good quality and the switch from MR to LP-WUS / WUR. However, the cell quality could then deteriorate and the serving cell would be judged to be of poor quality, leading to a switch from LP-WUS / WUR to MR, resulting in frequent switching.

[0080] This paper discusses the issue of when to enable / disable LP-WUS / WUR in a UE after the introduction of LP-WUS / WUR, and how to avoid frequent switching between LP-WUS / WUR and MR. This paper enables timely and accurate LP-WUS / WUR activation / disablement, avoiding frequent switching between LP-WUS / WUR and MR.

[0081] In the following descriptions, the term "LP-WUS / WUR" refers to "LP-WUS and / or LP-WUR." In the following descriptions, "activating LP-WUS / WUR" means starting to use LP-WUR and / or starting to monitor LP-WUS, and "deactivating LP-WUS / WUR" means stopping using LP-WUR and / or stopping monitoring LP-WUS.

[0082] 1 to 4 , an overview of embodiments of the present invention will be described. The following overview does not list all embodiments of the present invention, and other embodiments of the present invention are possible based on the description of this specification.

[0083] FIG1 is a flowchart of a low-power receiving method according to an embodiment of the present invention.

[0084] As shown in FIG1 , at 102 , the user equipment receives low power consumption reception configuration information including a serving cell quality threshold from the network.

[0085] At 104, the user equipment determines whether a process using the primary receiver is in progress. If the determination at 104 is that a process using the primary receiver is in progress, the user equipment uses the primary receiver at 110. If the determination at 104 is "No," the user equipment determines at 106 whether the serving cell quality of the corresponding serving cell is not less than a serving cell quality threshold. If the determination at 106 is that the serving cell quality is less than the serving cell quality threshold, the user equipment proceeds to 110 to use the primary receiver.

[0086] When the serving cell quality is not lower than the serving cell quality threshold and there is no ongoing process using the primary receiver, at 108 , the primary receiver is disabled and the low power wake-up receiver is enabled to listen for a low power wake-up signal for waking up the primary receiver.

[0087] In another example, the determination in step 106 may be performed first. When it is determined that the serving cell quality is not lower than the serving cell quality threshold, it is then determined whether there is an ongoing process using the primary receiver.

[0088] The example shown in FIG1 can be applied to user equipment in an RRC connected state, and can also be applied to a device in an RRC idle state or an RRC inactive state.

[0089] When the user equipment is in an RRC idle state or an RRC inactive state, it may be determined that a procedure using the primary receiver is in progress when at least one of the following conditions is met: the user equipment receives a system message update indication; the user equipment sends a system message request message to the network; the user equipment receives a system message update indication and has not completed a system message acquisition procedure corresponding to the system message update indication; the user equipment sends a system message request message to the network and has not completed a system message acquisition procedure corresponding to the system message request message; the user equipment sends an RRC establishment request and has not received an RRC establishment message or an RRC reject message for the RRC establishment request, and has not performed cell reselection; the user equipment receives an RRC reject message for an RRC connection establishment or RRC recovery procedure and has not entered an RRC connected state or an RRC idle state, and has not performed cell reselection; after the user equipment sends an RRC recovery request message, one of an RRC resume message, an RRC establishment message, and an RRC release message for the RRC recovery request message has not been received, and has not performed cell reselection; an MBS service is in progress; a small data transmission procedure is in progress; NR idle mode measurement is configured; and a random access procedure is in progress.

[0090] When the user equipment is in the RRC connected state, it can be determined that there is an ongoing process using the main receiver when at least one of the following conditions is met: the user equipment receives a system message update indication; the user equipment sends a system message request message to the network; the user equipment receives a system message update indication and has not yet completed the system message acquisition process corresponding to the system message update indication; the user equipment sends a system message request message to the network and has not yet completed the system message acquisition process corresponding to the system message request message; the user equipment sends an RRC reconstruction request message and has not yet received an RRC reconstruction message or an RRC establishment message for the RRC reconstruction request message; the user equipment initiates an RRC reconstruction process and has not yet selected a suitable NR cell; the user equipment receives an RRC reconfiguration message and has not yet completed the random access process on the target special cell; MBS service is in progress; a random access process is in progress; there is a suspended resource request.

[0091] It should be noted that, whether it is a user equipment in an RRC connected state or a user equipment in an RRC idle state or an RRC inactive state, it is not necessary to use all of the conditions listed above when determining that there is an ongoing process using the primary receiver. For example, in some examples, only one of the above conditions may be set. When the condition is met, it is determined that there is an ongoing process using the primary receiver, and when the condition is not met, it is determined that there is no ongoing process using the primary receiver. In another example, two of the conditions may be set. As long as any one of the two conditions is met, it is determined that there is an ongoing process using the primary receiver, and when both conditions are not met, it is determined that there is no ongoing process using the primary receiver. When more of the above-listed conditions are set, the same applies. Of course, conditions other than the above-listed conditions may be added. As long as at least one of the conditions adopted is included in the above-listed conditions, it falls within the scope of the present invention.

[0092] Figure 2 is a flow chart of a low power reception method performed by a user equipment in an RRC idle state or an RRC inactive state according to another embodiment of the present invention. In the flow chart of Figure 2 , the starting state is that the user equipment is using a low power wake-up receiver.

[0093] As shown in Figure 2, at 202, a determination is made as to whether the serving cell quality is below a serving cell quality threshold. If the serving cell quality is below the serving cell quality threshold, the primary receiver is used at 204. If the serving cell quality is not below the serving cell quality threshold, the current state is maintained, i.e., the low-power wake-up receiver continues to be used.

[0094] Next, at 206, a determination is made as to whether a first predetermined time has elapsed since the primary receiver was started in 204. Whether the first predetermined time has elapsed can be determined using a first timer. In this case, the first timer can be started when the serving cell quality of the serving cell is determined to be below a serving cell quality threshold. When the first timer expires, it can be determined that the first predetermined time has elapsed. If the first timer is in a running state, the first predetermined time has not elapsed. In this case, the low-power reception configuration information can also include an indication value of the first timer.

[0095] Before the first predetermined time has passed, the operation of deactivating the primary receiver and activating the low-power wake-up receiver is not performed to avoid frequent switching between the primary receiver and the low-power wake-up receiver due to unstable serving cell quality. Specifically, if it is determined in 206 that the first predetermined time has not passed, the process proceeds to 204, i.e., the primary receiver continues to be used, and the subsequent determination is not performed.

[0096] Only if it is determined that the first predetermined time has elapsed, the determination of whether to switch to the low-power wake-up receiver is continued, that is, the determinations of 208 and 210 are continued. If the determination result of 208 is "no" and the determination result of 210 is "yes", the main receiver is disabled and the low-power wake-up receiver is enabled to listen for the low-power wake-up signal. 208 to 214 in FIG. 2 are respectively the same as 106 to 110 in FIG. 1 , and thus are not described again.

[0097] Furthermore, in another example, for the process shown in FIG. 2 , the determination in step 208 may be omitted.

[0098] Figure 3 is a flow chart of a low power reception method performed by a user equipment in an RRC connected state according to another embodiment of the present invention. Figure 3 is an example of a user equipment entering a new cell.

[0099] As shown in Figure 3, in 302, when a user equipment in an RRC connected state enters a new serving cell, it uses a primary receiver. Furthermore, when entering the new cell and starting to use the primary receiver, a timer starts.

[0100] At 304, the user equipment determines whether a second predetermined time has elapsed since it began using the primary receiver. This determination can be made using a second timer. In this case, the first timer can be started when the user equipment enters a new serving cell and begins using the primary receiver. When the second timer expires, it can be determined that the second predetermined time has elapsed. If the second timer is running, the second predetermined time has not elapsed. In this case, the low-power reception configuration information also includes an indication value of the second timer.

[0101] Before a second predetermined time has passed since the primary receiver was used, the operation of deactivating the primary receiver and activating the low-power wake-up receiver is not performed to avoid frequent switching between the primary receiver and the low-power wake-up receiver due to unstable serving cell quality. Specifically, if it is determined in 304 that the second predetermined time has not passed, 312 is executed, i.e., the primary receiver continues to be used without performing the subsequent determination.

[0102] Only if it is determined that the second predetermined time has elapsed, the determination of whether to switch to the low-power wake-up receiver is continued, i.e., the determinations of 306 and 308 are continued. If the determination result of 306 is "no" and the determination result of 308 is "yes", the main receiver is disabled and the low-power wake-up receiver is enabled to listen for the low-power wake-up signal. 306 to 310 in FIG. 3 are respectively the same as 106 to 110 in FIG. 1 , and thus are not described again.

[0103] In addition, in another example, for the process shown in FIG. 3 , the determination in step 306 may be omitted.

[0104] FIG4 is a flowchart of a low-power receiving method according to another embodiment of the present invention.

[0105] As shown in Figure 4, a user equipment in an RRC connected state receives an RRC connection release message from the network at 402. The RRC connection release message includes an indication of whether to use a low power wake-up receiver or a primary receiver after releasing the RRC connection.

[0106] At 404, the user equipment releases the RRC connection and enters the RRC idle state or the RRC inactive state. After the user equipment enters the RRC idle state or the RRC inactive state, at 406, based on the instruction of the RRC connection release message, one of the low power wake-up receiver and the main receiver is selected for use.

[0107] After initially entering the RRC idle state or the RRC inactive state and selecting a receiver to be used, the user equipment may further perform switching between the primary receiver and the low power wake-up receiver based on the method described above.

[0108] Hereinafter, several embodiments of the present invention for solving the above problems are described in detail.

[0109] Example 1

[0110] This embodiment is directed to the RRC idle state and / or the RRC inactive state.

[0111] Optionally, in step 1, the UE receives LP-WUS / WUR configuration information sent by the network. Optionally, the network may send the LP-WUS / WUR configuration information through a system message, an RRC message, a MAC CE, or a physical layer indication. Optionally, the LP-WUS / WUR configuration information may include, but is not limited to: the time-frequency position of the LP-WUS / WUR, the transmission period of the LP-WUS / WUR, and other information, and the service cell quality threshold of the LP-WUS / WUR (optionally, the threshold is the service cell quality threshold of the LP-WUS / WUR in the RRC idle state and / or the RRC inactive state).

[0112] Optionally, in step 2, the UE determines whether to enable LP-WUS / WUR and / or whether to disable MR.

[0113] Optionally, (the UE is using MR) if no process to use MR is in progress, the UE performs a judgment on the quality of the serving cell. Optionally, if the quality of the serving cell is good, the UE activates LP-WUS / WUR and / or deactivates MR (or puts MR into sleep).

[0114] Alternatively, optionally, (the UE is using MR) when no procedure to use MR is in progress and the quality of the serving cell is good, the UE enables LP-WUS / WUR and / or deactivates MR (or MR enters sleep).

[0115] Optionally, “a procedure for using MR is in progress” may be described as the UE satisfying at least one of the following conditions:

[0116] -The UE receives a system message update indication;

[0117] -The UE sends a system message request message to the network;

[0118] -The UE has not completed the corresponding system information acquisition procedure since the UE received the system information update indication;

[0119] -The UE has not completed the corresponding system information acquisition process since the UE sent a system information request message to the network;

[0120] - The T300 timer, and / or the T302 timer, and / or the T319 timer, and / or the T390 timer are running;

[0121] -MBS business / service / session is ongoing;

[0122] -The Small Data Transmission (SDT) process is in progress;

[0123] -The UE is configured with NR idle mode measurements (idleModeMeasurementsNR);

[0124] - A random access procedure is in progress.

[0125] "No process is currently in progress that will use the MR" is the opposite of the above-mentioned "There is a process currently in progress that will use the MR." Specifically, if "There is a process currently in progress that will use the MR" includes N conditions (N>=1) that meet the above-mentioned conditions, then if none of the N conditions are met, it can be considered that "No process is currently in progress that will use the MR."

[0126] Optionally, "good serving cell quality" may mean that the serving cell quality is higher than (or equal to) the serving cell quality threshold of the LP-WUS / WUR configured in step 1. Optionally, the serving cell quality may be the RSRP / RSRQ of the reference signal sent on the serving cell measured using the MR and / or LP-WUR.

[0127] The UE starts the T300 timer when sending an RRC Setup Request (RRCSetupRequest) message, and stops the T300 timer when receiving an RRC Setup (RRCSetup) message or an RRC Reject (RRCReject) message sent by the network or when a cell reselection occurs.

[0128] Among them, when the UE receives the RRCReject message for the RRC connection establishment or RRC recovery process (the RRCReject message carries the waiting time waitTime), the T302 timer is started, and the T302 timer is stopped when the UE enters the RRC connected state or the RRC idle state, or when the cell is reselected.

[0129] Among them, the T319 timer is started when the UE sends an RRC recovery request (RRCResumeRequest) message, and the T319 timer is stopped when the UE receives an RRC recovery (RRCResume) message, or an RRC establishment (RRCSetup) message, or an RRC release (RRCRelease) message, or a cell reselection.

[0130] The UE starts the T390 timer when the access attempt is prohibited, and stops the T390 timer when the cell is reselected, or the UE enters the RRC connected state, or receives the RRCRelease message.

[0131] Example 2

[0132] This embodiment is directed to the RRC idle state and / or the RRC inactive state.

[0133] According to Example 1, step 1 of this embodiment is the same as step 1 of Example 1.

[0134] Optionally, in step 2, the UE determines whether to continue using the MR.

[0135] Optionally, (the UE is using the MR) if a process for using the MR is in progress, the UE continues to use the MR. The meaning of "a process for using the MR is in progress" is the same as that in the first embodiment.

[0136] Among them, the meanings of timers T300, T302, T319, and T390 are the same as those in the first embodiment.

[0137] Example 3

[0138] This embodiment is directed to the RRC idle state and / or the RRC inactive state.

[0139] Optionally, the UE receives an RRC connection release message sent by the network in the RRC connection state, and the message carries an indication of using MR or LP-WUS / WUR (or an indication of whether to use LP-WUS / WUR, or an indication of whether to use MR).

[0140] The UE determines, based on the indication, the receiver to be used after entering the RRC idle state or the RRC inactive state. For example, if the indication indicates the use of LP-WUS / WUR, the UE activates LP-WUS / WUR after entering the RRC idle state or the RRC inactive state.

[0141] Example 4

[0142] This embodiment is for the RRC connected state.

[0143] Optionally, in step 1, the UE receives LP-WUS / WUR configuration information sent by the network. Optionally, the network may send the LP-WUS / WUR configuration information through a system message, an RRC message, a MAC CE, or a physical layer indication. Optionally, the LP-WUS / WUR configuration information may include, but is not limited to: the time-frequency position of the LP-WUS / WUR, the transmission period of the LP-WUS / WUR, and other information, and the service cell quality threshold of the LP-WUS / WUR (optionally, the threshold is the service cell quality threshold of the LP-WUS / WUR in the RRC connected state).

[0144] Optionally, (the UE is using MR) if no process to use MR is in progress, the UE performs a judgment on the quality of the serving cell. Optionally, if the quality of the serving cell is good, the UE activates LP-WUS / WUR and / or deactivates MR (or puts MR into sleep).

[0145] Alternatively, optionally, (the UE is using MR) when no procedure to use MR is in progress and the quality of the serving cell is good, the UE enables LP-WUS / WUR and / or deactivates MR (or MR enters sleep).

[0146] Alternatively, "there is a procedure in progress to use MR" may be described as the UE meeting at least one of the following conditions:

[0147] -The UE receives a system message update indication;

[0148] -The UE sends a system message request message to the network;

[0149] -The UE has not completed the corresponding system information acquisition procedure since the UE received the system information update indication;

[0150] -The UE has not completed the corresponding system information acquisition process since the UE sent a system information request message to the network;

[0151] -T301 timer, and / or T304 timer, and / or T311 timer are running;

[0152] -MBS business / service / session is ongoing;

[0153] - There is a random access procedure in progress;

[0154] - There is a pending resource request (SR).

[0155] "No process is currently in progress that will use the MR" is the opposite of the above-mentioned "There is a process currently in progress that will use the MR." Specifically, if "There is a process currently in progress that will use the MR" includes N conditions (N>=1) that meet the above-mentioned conditions, then if none of the N conditions are met, it can be considered that "No process is currently in progress that will use the MR."

[0156] Optionally, "good serving cell quality" may mean that the serving cell quality is higher than (or equal to) the serving cell quality threshold of the LP-WUS / WUR configured in step 1. Optionally, the serving cell quality may be the RSRP / RSRQ of the reference signal sent on the serving cell measured using the MR and / or LP-WUR.

[0157] Among them, optionally, the T301 timer is started when the UE sends an RRC reestablishment request (RRCReestabilshmentRequest) message, and the T301 timer is stopped when the RRC reestablishment (RRCReestablishment) message or the RRC establishment (RRCSetup) message is received. Optionally, the T311 timer is started when the UE initiates the RRC reestablishment process, and the T311 timer is stopped when a suitable NR cell is selected. The T304 timer is a handover timer. The T304 timer is started after the UE receives an RRC reconfiguration message with synchronous reconfiguration, and the T304 timer is stopped after the random access process on the target SpCell is successfully completed.

[0158] Example 5

[0159] This embodiment is directed to the RRC connected state, the RRC idle state and the RRC inactive state.

[0160] Optionally, the steps are the same as step 1 of embodiment 1, or the same as step 1 of embodiment 4. The difference is that the LP-WUS / WUR configuration information received by the UE may also include the prohibition timer T1 (such as the value of T1).

[0161] Optionally, in step 2, due to poor quality of the serving cell, the UE switches from using LP-WUR to using MR, and the UE starts a prohibition timer T1 (based on the value of T1 configured in step 1). Optionally, "poor quality of the serving cell" may refer to the serving cell quality being lower than the serving cell quality threshold of LP-WUS / WUR configured in step 1. Optionally, the serving cell quality may be the RSRP / RSRQ of the reference signal sent on the serving cell measured using MR and / or LP-WUR.

[0162] Optionally, in step three, the UE determines whether to enable LP-WUS / WUR and / or whether to disable MR.

[0163] Optionally, (UE is using MR) if the prohibition timer T1 is not running, the UE performs a judgment on the quality of the serving cell. Optionally, if the quality of the serving cell is good, the UE enables LP-WUS / WUR and / or disables MR (or MR enters sleep).

[0164] Alternatively, (the UE is using MR) if the prohibition timer T1 is not running and the serving cell quality is good, the UE enables LP-WUS / WUR and / or deactivates MR (or MR enters sleep).

[0165] Optionally, "good serving cell quality" may mean that the serving cell quality is higher than (or equal to) the serving cell quality threshold of the LP-WUS / WUR configured in step 1. Optionally, the serving cell quality may be the RSRP / RSRQ of the reference signal sent on the serving cell measured using the MR and / or LP-WUR.

[0166] Example 6

[0167] This embodiment is directed to the RRC idle state and the RRC inactive state.

[0168] Optionally, the steps are the same as step 1 of embodiment 1. The difference is that the LP-WUS / WUR configuration information received by the UE may also include the value of the T2 duration.

[0169] Optionally, in step 2, the UE determines whether to enable LP-WUS / WUR and / or whether to disable MR.

[0170] Optionally, (the UE is using MR) after the UE has used MR for at least T2 after selecting (or reselecting) a new cell, the UE performs a judgment on the quality of the serving cell. Optionally, if the quality of the serving cell is good, the UE enables LP-WUS / WUR and / or disables MR (or puts MR into sleep).

[0171] Alternatively, optionally, (the UE is using MR) after the UE selects (or reselects) a new cell and has used MR for at least T2 time, and the quality of the serving cell is good, the UE enables LP-WUS / WUR and / or disables MR (or MR goes to sleep).

[0172] Optionally, "good serving cell quality" may mean that the serving cell quality is higher than (or equal to) the serving cell quality threshold of the LP-WUS / WUR configured in step 1. Optionally, the serving cell quality may be the RSRP / RSRQ of the reference signal sent on the serving cell measured using the MR and / or LP-WUR.

[0173] Example 7

[0174] This embodiment is for the RRC connected state.

[0175] Optionally, when the source gNB decides to handover the UE to the target gNB, the source gNB sends a Handover Preparation Information message to the target gNB, and the message carries the receiver information currently used by the UE, that is, whether the UE is currently using MR or LP-WUS / WUR.

[0176] This method allows the target gNB to know the receiver used by the UE in the source gNB when a cell handover occurs, thereby assisting the target gNB in ​​deciding which receiver (MR or LP-WUS / WUR) to use for the UE.

[0177] Figure 5 is a simplified block diagram of the user equipment (UE) according to the present invention. As shown in Figure 5 , the user equipment (UE) 900 includes a processor 501 and a memory 502. The processor 901 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 502 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. The memory 502 stores program instructions. When executed by the processor 501, these instructions may execute the above-described method performed by the user equipment as described in detail in the present invention.

[0178] 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.

[0179] 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.

[0180] 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.

[0181] 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.

[0182] 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 low power consumption receiving method performed by a user equipment, comprising: receiving low power reception configuration information including a serving cell quality threshold from a network; as well as When the service cell quality of the service cell corresponding to the user equipment is not lower than the service cell quality threshold and there is no ongoing process using the main receiver of the user equipment, the main receiver is disabled and the low-power wake-up receiver is enabled to listen for a low-power wake-up signal for waking up the main receiver.

2. The method according to claim 1, further comprising: In a case where it is determined that there is no ongoing process using the primary receiver, it is determined whether the serving cell quality of the serving cell is not lower than the serving cell quality threshold.

3. The method according to claim 1 or 2, wherein: When the user equipment is in an RRC idle state or an RRC inactive state, the method further includes: When at least one of the following conditions is met, it is determined that there is an ongoing process using the primary receiver: The user equipment receives a system message update indication; The user equipment sends a system message request message to the network; The user equipment receives a system message update indication, and does not complete a system message acquisition process corresponding to the system message update indication; The user equipment sends a system message request message to the network, and does not complete the system message acquisition process corresponding to the system message request message; The user equipment has sent an RRC establishment request, has not received an RRC establishment message or an RRC rejection message for the RRC establishment request, and has not performed cell reselection; The user equipment receives an RRC rejection message for an RRC connection establishment or RRC recovery process, and has not yet entered an RRC connected state or an RRC idle state, and has not performed cell reselection; After the user equipment sends the RRC recovery request message, one of the RRC recovery message, the RRC establishment message, and the RRC release message for the RRC recovery request message has not been received, and cell reselection has not been performed; MBS business is ongoing; Small data transfer process is in progress; Configured for NR idle mode measurements; Random access procedure in progress.

4. The method according to claim 1 or 2, wherein: When the user equipment is in an RRC idle state or an RRC inactive state, the method further includes: In a case where it is determined that the serving cell quality of the serving cell is lower than the serving cell quality threshold, using the primary receiver; and After the primary receiver starts to be used because the serving cell quality of the serving cell is lower than the serving cell quality threshold, the operation of disabling the primary receiver and enabling the low power wake-up receiver is not performed before a first predetermined time passes from the start of using the primary receiver.

5. The method according to claim 4, wherein: determining whether the first predetermined time has passed by using a first timer, The first timer is started when it is determined that the serving cell quality of the serving cell is lower than the serving cell quality threshold, and the low-power reception configuration information also includes an indication value of the first timer.

6. The method according to claim 1 or 2, wherein: When the user equipment is in an RRC connected state, the method further includes: When at least one of the following conditions is met, it is determined that there is an ongoing process using the primary receiver: The user equipment receives a system message update indication; The user equipment sends a system message request message to the network; The user equipment receives a system message update indication, and has not yet completed a system message acquisition process corresponding to the system message update indication; The user equipment has sent a system message request message to the network, and has not yet completed a system message acquisition process corresponding to the system message request message; The user equipment has sent an RRC re-establishment request message, and has not received an RRC re-establishment message or an RRC establishment message for the RRC re-establishment request message; The user equipment has initiated an RRC reestablishment procedure and has not yet selected a suitable NR cell; The user equipment receives the RRC reconfiguration message and has not yet completed the random access procedure on the target special cell; MBS business is ongoing; The random access procedure is in progress; There are pending resource requests.

7. The method according to claim 1 or 2, wherein: When the user equipment is in an RRC connected state, the method further includes: When the user equipment enters a new serving cell, the primary receiver is used, and before a second predetermined time has passed since the primary receiver was used, an operation of deactivating the primary receiver and activating the low power consumption wake-up receiver is not performed.

8. The method according to claim 7, wherein: determining whether the second predetermined time has passed by using a second timer, The second timer is started when the user equipment enters the new serving cell and starts to use the primary receiver, and the low-power reception configuration information further includes an indication value of the second timer.

9. The method according to claim 1 or 2, further comprising: A user equipment in an RRC connected state receives an RRC connection release message from the network, wherein the RRC connection release message includes an indication of whether to use the low power consumption wake-up receiver or the main receiver after releasing the RRC connection; as well as After the user equipment enters the RRC idle state or the RRC inactive state, based on the indication of the RRC connection release message, one of the low power consumption wake-up receiver and the main receiver is selected for use.

10. A user equipment, comprising: processor; as well as Memory, which stores instructions, Wherein, when the instructions are executed by the processor, the method according to any one of claims 1 to 9 is performed.

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