Method for monitoring and sending low-power wake-up signal, terminal and network-side device

Abstract

This application discloses a method for monitoring and transmitting low-power wake-up signals, a terminal, and a network-side device, belonging to the field of wireless communication technology. The method for monitoring low-power wake-up signals in this application includes: when the terminal is configured or activated to monitor cell-DTX and LP-WUS, monitoring LP-WUS at a first LP-WUS monitoring time; wherein the first LP-WUS monitoring time satisfies at least one of the following: during the inactive time of cell-DTX; during the active time of cell-DTX; a monitoring time determined according to the configured LP-WUS configuration information; a monitoring time within a monitoring window determined by a first reference position and a first time offset; or the N monitoring times closest to the first reference position, where N is greater than or equal to 1.

Description

Technical Field

[0001] This application belongs to the field of wireless communication technology, specifically relating to a method for monitoring and transmitting low-power wake-up signals, a terminal, and a network-side device. Background Technology

[0002] To support energy saving on the network side, cell discontinuous transmission (cell-DTX) mode can be configured, enabled, or activated for one or more serving cells.

[0003] To support power saving in user equipment (UE), the terminal can be configured with connected discontinuous reception (C-DRX) or downlink control information (DCP) scrambled with a power-saving wireless network temporary identifier. C-DRX allows the terminal to periodically enter a sleep state, not listening to the Physical Downlink Control Channel (PDCCH), and wake up from the sleep state when listening is needed, thereby achieving power saving.

[0004] To further support terminal energy saving, R18 / 19 introduced a low-power wake-up signal (LP-WUS). If the terminal detects LP-WUS, it will trigger the activation of the terminal's main receiver module according to the LP-WUS instruction and start monitoring of PDCCH.

[0005] In related technologies, when Cell-DTX is configured, it is unclear when the network-side device sends LP-WUS and when the terminal listens for LP-WUS. If the behavior of the terminal and the network-side device is inconsistent, the terminal may be unable to listen to PDCCH. Summary of the Invention

[0006] This application provides a method for listening to and sending low-power wake-up signals, a terminal, and a network-side device. It can solve the problem that when Cell-DTX is configured, it is unclear when the network-side device sends LP-WUS and when the terminal listens to LP-WUS. If the behavior of the terminal and the network-side device is inconsistent, the terminal may be unable to listen to PDCCH.

[0007] Firstly, a method for monitoring the low-power wake-up signal LP-WUS is provided, including:

[0008] When the terminal is configured or activated to transmit cell-DTX and listen to LP-WUS discontinuously, it listens to LP-WUS during the first LP-WUS listening time.

[0009] Wherein, the first LP-WUS listening timing satisfies at least one of the following:

[0010] During the inactive time of cell-DTX;

[0011] During the active time of cell-DTX;

[0012] The listening timing is determined based on the configured LP-WUS information;

[0013] The timing of listening within the listening window, determined by the first reference position and the first time offset;

[0014] The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

[0015] Secondly, a method for sending a low-power wake-up signal is provided, including:

[0016] When the network-side device detects the first LP-WUS, it sends the LP-WUS of the serving cell of the terminal to the terminal. The serving cell is a cell that has configured or activated cell-DTX.

[0017] Wherein, the first LP-WUS listening timing satisfies at least one of the following:

[0018] During the inactive time of cell-DTX;

[0019] During the active time of cell-DTX;

[0020] The listening timing is determined based on the LP-WUS configuration information;

[0021] The timing of listening within the listening window, determined by the first reference position and the first time offset;

[0022] The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

[0023] Thirdly, a low-power wake-up signal monitoring device is provided, comprising:

[0024] The processing module is used to listen to LP-WUS during the first LP-WUS listening time when cell-DTX is configured or activated and LP-WUS is being listened to.

[0025] Wherein, the first LP-WUS listening timing satisfies at least one of the following:

[0026] During the inactive time of cell-DTX;

[0027] During the active time of cell-DTX;

[0028] The listening timing is determined based on the configured LP-WUS information;

[0029] The timing of listening within the listening window, determined by the first reference position and the first time offset;

[0030] The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

[0031] Fourthly, a low-power wake-up signal transmitting device is provided, comprising:

[0032] The transmitting module is used to transmit the LP-WUS of the serving cell of the terminal to the terminal during the first LP-WUS listening time. The serving cell is a cell that is configured or activated to transmit cell-DTX discontinuously.

[0033] Wherein, the first LP-WUS listening timing satisfies at least one of the following:

[0034] During the inactive time of cell-DTX;

[0035] During the active time of cell-DTX;

[0036] The listening timing is determined based on the LP-WUS configuration information;

[0037] The timing of listening within the listening window, determined by the first reference position and the first time offset;

[0038] The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

[0039] Fifthly, a low-power wake-up signal monitoring device is provided, the device being configured to perform the steps of the method described in the first aspect.

[0040] In a sixth aspect, a low-power wake-up signal transmitting device is provided, the device being configured to perform the steps of the method described in the second aspect.

[0041] In a seventh aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0042] Eighthly, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to listen to LP-WUS during a first LP-WUS listening time when cell-DTX is configured or activated and LP-WUS is listened to.

[0043] Wherein, the first LP-WUS listening timing satisfies at least one of the following:

[0044] During the inactive time of cell-DTX;

[0045] During the active time of cell-DTX;

[0046] The listening timing is determined based on the configured LP-WUS information;

[0047] The timing of listening within the listening window, determined by the first reference position and the first time offset;

[0048] The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

[0049] In a ninth aspect, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0050] In a tenth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to send the LP-WUS of the serving cell of the terminal to the terminal during a first LP-WUS listening time, wherein the serving cell is a cell configured or activated to transmit cell-DTX discontinuously.

[0051] Wherein, the first LP-WUS listening timing satisfies at least one of the following:

[0052] During the inactive time of cell-DTX;

[0053] During the active time of cell-DTX;

[0054] The listening timing is determined based on the LP-WUS configuration information;

[0055] The timing of listening within the listening window, determined by the first reference position and the first time offset;

[0056] The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

[0057] Eleventhly, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0058] In a twelfth aspect, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal is configured to perform the steps of the method described in the first aspect, and the network-side device is configured to perform the steps of the method described in the second aspect.

[0059] In a thirteenth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0060] In a fourteenth aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being executed by at least one processor to perform the steps of the method as described in the first or second aspect.

[0061] In this application embodiment, the timing of LP-WUS transmission by the network side and the timing of LP-WUS listening by the terminal side when cell-DTX is configured are clarified to ensure that the behavior of the terminal and the network side devices is consistent, thereby ensuring that PDCCH monitoring is performed based on the LP-WUS being listened to. Attached Figure Description

[0062] Figure 1 This is a block diagram of a wireless communication system applicable to embodiments of this application;

[0063] Figure 2 This is a schematic diagram illustrating the working principle of the new wireless low-power wake-up signal;

[0064] Figure 3 This is a schematic diagram of the on / off key control signal;

[0065] Figure 4 This is a schematic diagram of a low-power wake-up signal;

[0066] Figure 5 This is a schematic diagram of discontinuous reception (C-DRX) in the connected state of a terminal;

[0067] Figure 6 This is a schematic diagram of the terminal's DCP;

[0068] Figure 7 This is a flowchart illustrating a low-power wake-up signal monitoring method according to an embodiment of this application;

[0069] Figure 8 This is an example where the runtime of a timer that is started or activated on the terminal does not coincide with the activity time of cell-DTX;

[0070] Figure 9 This is a flowchart illustrating the method for transmitting a low-power wake-up signal according to an embodiment of this application;

[0071] Figure 10 This is a schematic diagram of the low-power wake-up signal transmission and monitoring method according to Embodiment 1 of this application;

[0072] Figure 11 This is a schematic diagram of the low-power wake-up signal transmission and monitoring method according to Embodiment 2 of this application;

[0073] Figure 12 This is a schematic diagram of the low-power wake-up signal transmission and monitoring method according to Embodiment 3 of this application;

[0074] Figure 13 This is one of the schematic diagrams of the low-power wake-up signal transmission and monitoring method according to Embodiment 5 of this application;

[0075] Figure 14 This is the second schematic diagram of the low-power wake-up signal transmission and monitoring method according to Embodiment 5 of this application;

[0076] Figure 15 This is a schematic diagram of the structure of a low-power wake-up signal monitoring device according to an embodiment of this application;

[0077] Figure 16 This is a schematic diagram of the structure of a low-power wake-up signal transmitting device according to an embodiment of this application;

[0078] Figure 17 This is a schematic diagram of the structure of a communication device according to an embodiment of this application;

[0079] Figure 18 This is a schematic diagram of the hardware structure of the terminal according to an embodiment of this application;

[0080] Figure 19 This is a schematic diagram of the hardware structure of the network-side device according to an embodiment of this application. Detailed Implementation

[0081] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0082] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0083] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0084] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0085] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, or self-service machines, etc. Wearable devices include: smartwatches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0086] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), and Binding Support. Functions include BSF, Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), and Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform station).It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment. If the name of the core network equipment mentioned in the embodiments of this application changes in subsequent protocol versions (e.g., 6G), it is also within the scope of protection of this application.

[0087] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0088] The technical terms involved in the embodiments of this application will be briefly explained below.

[0089] (1) Low-power receiver

[0090] A low-power receiver, also known as a low-power wake-up radio (LP-WUR) or an almost zero-power radio (AZP-WUR), operates on the principle that the receiver comprises a first module and a second module, such as... Figure 2 As shown, the first module is the main communication module, used for sending and receiving mobile communication data. The second module is a low-power receiver module (also called a low-power wake-up receiver module), used to receive the Low Power Wake-Up Signal (LP-WUS). In power-saving mode, the terminal activates the low-power receiver module to listen for LP-WUS and disables the main communication module. When downlink data arrives, the network-side device sends LP-WUS to the terminal. The terminal listens for LP-WUS through the low-power receiver module and, after a series of checks, triggers the main communication module to enter the on state (or working state) from the off state (or sleep state), while the low-power receiver module enters the off state (or sleep state). The low-power receiver module can be continuously or intermittently activated, and when activated, it can receive LP-WUS.

[0091] (2) Low-power wake-up signal (LP-WUS)

[0092] To reduce receiving activity in standby mode and effectively shut down the radio frequency (RF) and modem modules, thereby significantly reducing power consumption during communication reception, a low-power receiver can be introduced into the terminal's receiver module. This low-power receiver eliminates the need for complex RF module signal detection (such as amplification, filtering, and quantization) and modem signal processing, relying solely on passive matched filtering and low-power signal processing.

[0093] Currently, various types of low-power receivers are supported, such as those based on on-off keying (OOK) waveforms and those based on orthogonal frequency division multiplexing (OFDM) waveforms. The difference between these two types lies in their power consumption. Generally, OFDM-based receivers consume more power than OOK-based receivers. However, OFDM-based receivers offer better sensitivity and reception performance. While OOK signals can be received using lower-power OOK-based receivers, their reception performance and coverage are inferior to OFDM-based receivers. Therefore, both types of low-power receivers have their advantages and disadvantages.

[0094] Low-power wake-up signals based on OOK waveforms are typically simple power on / off control signals. The time-domain representation of these power on / off control signals is as follows: Figure 3 As shown, the receiver can detect the low-power wake-up signal through simple energy detection and subsequent possible sequence detection and recognition processes. Furthermore, while the terminal activates the low-power receiver to receive the low-power wake-up signal, the main receiver module can maintain a low power consumption level, thereby achieving power savings by receiving the low-power wake-up signal.

[0095] In another embodiment, the low-power wake-up signal can be an OFDM signal or an OOK signal superimposed with OFDM. Since OFDM signal modulation is commonly used in existing 5G or 6G systems, an OFDM signal or an OOK signal superimposed with OFDM can be used as the waveform for LP-WUS, thus providing better adaptability to communication systems. The OOK signal superimposed with OFDM can be understood as the transmission or non-transmission of an OFDM modulated sequence, representing the ON / OFF chip in the OOK time domain. Alternatively, it can be understood as based on the OOK signal and superimposing an OFDM modulated signal on the ON chip of the OOK. Furthermore, when modulating the ON OFDM modulated sequence, information can be carried through different OFDM sequences. For example, if there are two OFDM sequences, one can represent 0 and the other can represent 1. The terminal can detect the specific sequence to know whether the transmitter sent 0 or 1. Similarly, if there are four OFDM sequences, the four sequences can represent four pieces of information: 00, 01, 10, and 11 respectively. Figure 4 In the example shown, OFDM bits = 4 means that 16 OFDM sequences were used, thus containing 4 bits of information.

[0096] The reception of low-power wake-up signals can be applied to terminals in the Radio Resource Control (RRC) idle state (RRC_idle) / inactive state, as well as terminals in the RRC connected state (RRC_connected), thereby achieving terminal energy saving.

[0097] (3) C-DRX on the terminal side

[0098] C-DRX, or Connected Discontinuous Reception, allows the UE to periodically enter a sleep state and not listen to the PDCCH. When listening is needed, it wakes up from the sleep state, thereby saving power.

[0099] The aforementioned "sleep" refers to the UE not monitoring the PDCCH, and the PDCCH not monitored is a PDCCH scrambled with the following Radio Network Temporary Identity (RNTI): Cell Radio Network Temporary Identifier (C-RNTI), Cancellation Indicator RNTI (CI-RNTI), Configured Scheduling RNTI (CS-RNTI), Interruption RNTI (INT-RNTI), Slot Format Indication RNTI (SFI-RNTI), Semi-Persistent CSI RNTI (SP-CSI-RNTI), Transmit Power Control-Physical Uplink Control Channel-RNTI (TPC-PUCCH-RNTI), and Transmit Power Control-Physical Uplink Shared Channel-RNTI. Shared Channel RNTI (TPC-PUSCH-RNTI), Transmit Power Control-Sounding Reference Symbols RNTI (TPC-SRS-RNTI), Availability Indication RNTI (AI-RNTI), Sidelink RNTI (SL-RNTI), Sidelink-Configured Scheduling–RNTI (SL-CS-RNTI), SL Semi-Persistent Scheduling V-RNTI, and cellDTRX-RNTI.

[0100] Conversely, "wake up" refers to the time the UE is "awake," used for monitoring PDCCH, etc. The awake time is collectively called Active Time. Please refer to [link / reference]. Figure 5 This includes the following situations:

[0101] drx-onDurationTimer: At this time, the UE is monitoring whether there is a PDCCH;

[0102] drx-InactivityTimer: At this time, the UE has detected the PDCCH and is receiving downlink data;

[0103] rx-RetransmissionTimerDL or drx-RetransmissionTimerUL: The UE is currently waiting for retransmission.

[0104] ra-ContentionResolutionTimer or msgB-ResponseWindow: At this time, the UE is waiting to receive Msg2 or Msg4;

[0105] SR is sent on PUCCH: After the UE sends a scheduling request (SR), the UE is waiting for uplink grant (UL grant).

[0106] After a non-contention-based random access UE receives a random access response (RAR): At this time, the UE is waiting to receive downlink control information (DCI) scrambled by C-RNTI, which is used to indicate uplink resource scheduling;

[0107] drx-onDurationTimer: The duration for which the UE listens to the PDCCH within one C-DRX cycle. Restarting is not allowed once started.

[0108] drx-InactivityTimer: After receiving a PDCCH indicating a new transmission, it is necessary to monitor the duration of the PDCCH. This timer starts or restarts on the first symbol after the PDCCH indicating the end of the new transmission (UL or DL) reception. The timer stops when a DRXcommand MAC CE is received.

[0109] drx-RetransmissionTimerDL or drx-RetransmissionTimerUL: This timer is a perHARQ Process parameter, indicating the maximum number of PDCCH slots the UE needs to continuously monitor in order to receive the desired downlink retransmission data. This timer starts on the first symbol after the drx-HARQ-RTT-Timer expires. It stops when a PDCCH indicating a downlink retransmission is received.

[0110] `drx-LongCycleStartOffset` can represent both long cycle (`longDRX-Cycle`) and `drxStartOffset`. If the network side also configures a short cycle (`ShortDRX-Cycle`) parameter, then the long cycle must be configured as an integer multiple of the short cycle.

[0111] drx-ShortCycle: The cycle length of short-cycle C-DRX.

[0112] drx-ShortCycleTimer: Specifies the number of short cycles after which a PDCCH is not received before transitioning to a long cycle. It starts when drx-inactivityTimer times out and a short cycle is configured. The timer length is an integer multiple of the short cycle.

[0113] drx-HARQ-RTT-TimerDL or drx-HARQ-RTT-TimerUL: This Timer is a Per HARQ Process parameter, representing the minimum time interval for waiting for retransmission. This Timer is started on the first symbol after the ACK / NACK transmission ends. During the Timer's operation, the corresponding MAC does not listen to the PDCCH. When this Timer times out, the corresponding HARQ process's drx-RetransmissionTimerDL is started.

[0114] (Long)DRX Command MAC CE: Both can stop drx-InactivityTimer and drx-onDurationTimer, thus causing the UE to leave the active time. Long MAC CE can be used to stop drx-ShortCycleTimer and enter long-cycle C-DRX; while if MAC CE is configured for short-cycle C-DRX, it will start or restart drx-ShortCycleTimer and enter short-cycle C-DRX, otherwise it will enter long-cycle C-DRX.

[0115] (4) DCP (Downlink Control Information Scrambled with Power Saving Radio Network Temporary Identifier, DCI with CRCscrambled by PS-RNTI)

[0116] The DCP uses DCI format 2_6, scrambled with Power Saving Radio Network Temporary Identifier (PS-RNTI) and transmitted in the Common Search Space (Type 3-PDCCH CSS set). The reason for transmitting the DCP in the Common Search Space is that it can be shared by multiple UEs. This means the network can use a single DCP to control whether multiple UEs enable drx-onDurationTimer in the next C-DRX long cycle. (DCP can be configured for long-cycle DRX, but not for short-cycle C-DRX.)

[0117] DCI format 2_6 is transmitted only on SpCell:

[0118] Wake-up indicator (1 bit):

[0119] 0: The UE may not initiate drx-onDurationTimer in the next long DRX cycle;

[0120] 1: The UE starts drx-onDurationTimer in the next long DRX cycle;

[0121] Immediately after a 1-bit wake-up indicator, the Scell ​​sleep indicator (0-5 bits, depending on the Scell ​​group number) is displayed.

[0122] The working principle of DCP is as follows:

[0123] Each Long DRX Cycle has a corresponding DCP monitoring occasion (DCP MO). The UE monitors DCI format 2_6 in the DCP MO. Once the UE detects DCI in a certain MO, it reads its content and reports a wake-up indication to the Media Access Control (MAC) layer. The MAC entity then initiates the drx-onDurationTimer for the next DRX Cycle (i.e., the UE wakes up during onduration) or keeps the UE asleep. Note that if both Short and Long DRX Cycles are configured simultaneously, LP-WUS only applies to the Long DRX Cycle; the Short DRX Cycle follows the original process. The UE does not monitor DCP during DRX activity periods.

[0124] If no DCI is detected in the DCP MO, the UE will not report any information. At this time, the higher-layer parameter ps-WakeUp in the network configuration will take effect.

[0125] A configuration of 1 indicates that if the UE does not detect DCI, it will wake up in the next DRX Cycle.

[0126] Setting it to 0 or the default value indicates that if the UE does not detect DCI, it will remain asleep during the next DRX Cycle.

[0127] Please refer to Figure 6 For a given C-DRX cycle, the start time of the UE's DCP MO monitoring is indicated by the parameter PS-offset in slot units. That is, the UE begins DCP monitoring PS-offset slots prior to the start time of the C-DRX cycle and continues monitoring until a minimum value (Minimum Gap, also known as the Min Gap) is reached between the end of DCP monitoring and the start of the C-DRX cycle. In other words, there is a minimum Min Gap between the end of DCP monitoring and the beginning of the C-DRX cycle. The size of the Min Gap depends on the UE's capabilities and is reported to the network by the UE during capability reporting. This Gap is primarily used to handle DCP timing.

[0128] In addition, when the UE cannot or does not need to listen to the DCP MO, such as when the DCP MO and the Synchronization Signal and PBCH block (SSB) overlap, or due to measurement gap, the drx-onDurationTimer must be enabled in the next C-DRX Cycle.

[0129] For example, TS 38.321 states:

[0130] If all DCP events in the time domain related to the current DRX cycle, as specified in TS 38.213[6], occur during the active time, taking into account 4 milliseconds before the start of the last DCP event, or within the BWP handover interrupt length, or during the measurement gap, or when the MAC entity monitors the PDCCH of the SpCell while the ra-ResponseWindow is running to obtain a random access response identified by the C-RNTI (as described in Clause 5.1.4), receives an authorization / assignment / DRX command MAC CE / long DRX command MAC CE and sends a scheduling request;

[0131] Start drx onDurationTimer after drx SlotOffset at the beginning of the subframe.

[0132] (5) Cell-DTX / DRX (Network Energy Saving)

[0133] The main energy-saving principle of Cell Discontinuous Transmission / Reception (Cell-DTX / DRX) is that the network aligns the on-duration C-DRX of different UEs, ensuring that the UE C-DRX duration and the cell DTX / DRX duration are aligned or at least partially overlap. Alignment means that the cell DTX / DRX and UE C-DRX periods should be multiples of each other. Therefore, the cell can shut down some or all of its base station signal transmission and reception, or shut down certain base station devices, during the aligned cell-DTX / DRX off-duration, to achieve energy savings. Cell-DTX configuration and cell-DRX configuration can be configured together or independently.

[0134] Each serving cell can be configured by Radio Resource Control (RRC) to have a periodic cell-DTX mode (i.e., active and inactive periods). Cell-DTX operation affects the UE's monitoring activity for PDCCH and configured downlink allocation in RRC_CONNECTED. RRC controls cell-DTX and cell-DRX operation by configuring the following parameters in cellDTXDRX-Config for each serving cell:

[0135] cellDTXDRXconfigType: Defines whether to configure only cell-DTX, only cell-DRX, or both.

[0136] celldtxdrx-onDurationTimer: The duration of activity at the start of a cell-DTX / DRX cycle;

[0137] celldtxdrx-StartOffset: Defines the subframe at the start of the cell-DTX / DRX cycle;

[0138] celldtxdrx-SlotOffset: The delay before starting celldtxdrx-onDurationTimer;

[0139] celldtxdrx-Cycle: cell-DTX / DRX cycle.

[0140] cellDTXDRXactivationStatus: The initial activation status of cell-DTX and cell-DRX operations.

[0141] The activation and deactivation procedures for each serving cell are as follows:

[0142] Receive cell-DTX indication from L1 signaling, indicating activation or deactivation of cell-DTX operation; this L1 signaling is provided via DCI format 2_9 transmitted in the Type3-PDCCH CSS set;

[0143] CellDTXDRX-Config is configured by the upper layer: If cell-DTX is already configured and cellDTXDRXactivationStatus is set to active, then cell-DTX operation is activated after cell-DTX is configured; if cell-DTX is already configured and cellDTXDRXactivationStatus is set to disabled, then cell-DTX operation is disabled after cell-DTX is configured; if CellDTXDRX-Config is released, then cell-DTX operation is disabled and all corresponding configurations are released.

[0144] If cell-DTX operation for this serving cell has been deactivated; or if the serving cell is in an active cell-DTX period:

[0145] 1) The terminal needs to monitor the PDCCH on this serving cell.

[0146] If any serving cell in the DRX group to which this serving cell belongs has a running drx-RetransmissionTimerDL, drx-RetransmissionTimerUL, or drx-RetransmissionTimerSL; or if ra-ContentionResolutionTimer or msgB-ResponseWindow is running; or if a scheduling request has been sent on the PUCCH and is pending; or if, after successfully receiving a random access response with a random access preamble, no new transmission scheduled by a C-RNTI-scrambled PDCCH instructing the MAC entity is received, and the aforementioned random access preamble was not selected by the MAC entity from contention-based random access preambles,

[0147] 2) The terminal needs to monitor the PDCCH of this serving cell.

[0148] If ra-ResponseWindow is running, and this serving cell is a special cell (SpCell).

[0149] 3) The terminal needs to monitor the PDCCH of this serving cell.

[0150] For each serving cell configured with cell-DTX, if cell-DTX operation is activated and the serving cell is not in the cell-DTX Active Period (referred to as Cell-DTX inactiveperiod), the terminal-side MAC entity does not need to monitor PDCCH scrambled by C-RNTI, CI-RNTI, CS-RNTI, INT-RNTI, SFI-RNTI, SP-CSI-RNTI, TPC-PUCCH-RNTI, TPC-PUSCH-RNTI, TPC-SRS-RNTI, AI-RNTI, SL-RNTI, SL-CS-RNTI, SL Semi-Persistent Scheduling V-RNTI, and cellDTRX-RNTI, or PDCCH scrambled by G-RNTI(s) and G-CS-RNTI(s) to schedule MBS multicast.

[0151] (6) LP-WUS monitoring method

[0152] Option 1-1: Perform LP-WUS monitoring based on the LP-WUS monitoring configuration before drx-onDurationTimer to trigger the start of drx-onDurationTimer. This option may override the DCP function.

[0153] Option 1-2: LP-WUS monitoring triggers PDCCH monitoring based on the LP-WUS monitoring configuration, at least outside of traditional C-DRX activity times.

[0154] At the RAN1#120 meeting, it was discussed and approved that LP-WUS can be listened to on serving cells configured with Cell-DTX. Further research is needed on when network-side devices send LP-WUS and when terminal-side devices monitor LP-WUS to ensure that the behavior of terminal and network-side devices is consistent, thereby ensuring that PDCCH monitoring can be performed based on the detected LP-WUS.

[0155] The following description, in conjunction with the accompanying drawings, details the method for monitoring and sending low-power wake-up signals, the terminal, and the network-side device provided in this application, through some embodiments and application scenarios.

[0156] Please refer to Figure 7 This application provides a method for monitoring low-power wake-up signals, including:

[0157] Step S11: When the terminal is configured or activated with cell-DTX and LP-WUS monitoring, LP-WUS is monitored during the first LP-WUS monitoring session.

[0158] Wherein, the first LP-WUS listening timing satisfies at least one of the following:

[0159] During the inactive time of cell-DTX;

[0160] During the active time of cell-DTX;

[0161] The listening timing is determined based on the configured LP-WUS information;

[0162] The timing of listening within the listening window, determined by the first reference position and the first time offset;

[0163] The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

[0164] In this embodiment, "configured" refers to the terminal being configured by a network-side device (wireless access network device or core network device). Specifically, the LP-WUS configuration information can be configured by the network-side device, and this information includes the LP-WUS listening timing.

[0165] The terminal is activated with cell-DTX and listening to LP-WUS, which can also be described as the terminal having cell-DTX enabled and LP-WUS listening enabled.

[0166] The inactive time of cell-DTX can also be called the inactive time of cell-DTX, or the OFF time of cell-DTX.

[0167] The active time of cell-DTX can also be called the active time of cell-DTX, or the ON time of cell-DTX.

[0168] The first time offset of the first reference position can also be called the offset of the first reference position.

[0169] The listening window determined by the first reference position and the first time offset can be a listening window before the first reference position (with the first reference position as the end point) or a listening window after the first reference position (with the first reference position as the starting point).

[0170] In this application embodiment, the timing of the terminal listening to LP-WUS when cell-DTX is configured is clarified to ensure that the behavior of the terminal and the network-side device is consistent, thereby ensuring that PDCCH monitoring is performed based on the LP-WUS being listened to.

[0171] In some embodiments, optionally, the first reference location includes at least one of the following:

[0172] 1) The first start or first end time of the configured C-DRX duration or DCP duration or DCP listening timing, or the position offset by a second time offset relative to the first start or first end time;

[0173] DCP stands for DCI format 2_6.

[0174] The duration of C-DRX can be found in [link to C-DRX documentation]. Figure 5 The duration of on-duration in the DCP. The duration of DCP can be found in [reference needed]. Figure 6 The duration of DRX ON and the timing of DCP monitoring can be found in [reference needed]. Figure 6 The DCP MO in this embodiment. In this embodiment, the DCP listening time can be one of multiple DCP listening times within the range.

[0175] The aforementioned duration can also be referred to as onduration time, or ON time.

[0176] 2) The second start time or the second end time of the configured cell-DTX activity time, or the position offset by a third time offset relative to the second start time or the second end time;

[0177] 3) When the terminal is configured with Carrier Aggregation (CA), the third start time or the third end time of the cell-DTX activity time of the primary cell (Pcell), or the position offset by a fourth time offset relative to the third start time or the third end time.

[0178] 4) The fourth starting time of the union or intersection of the cell-DTX activity times of multiple serving cells connected to the terminal, or the position offset by a fifth time offset relative to the fourth starting time;

[0179] The serving cell connected to the terminal can also be referred to as the serving cell where the terminal is configured or activated.

[0180] 5) The start time of the cell-DTX activity time of the multiple serving cells connected to the terminal, or the position offset by a sixth time offset relative to the start time;

[0181] At this point, there are multiple determined start times and multiple determined first reference positions.

[0182] 6) When the terminal is configured with carrier aggregation and multiple carrier components (CCs) are configured with cell-DTX, the fifth starting time of the union or intersection of the active times of the cell-DTX of the multiple carrier components, or the position offset by a seventh time offset relative to the fifth starting time.

[0183] 7) When the terminal is configured with carrier aggregation and multiple carrier components are configured with cell-DTX, the sixth start time of the activity time of the cell-DTX corresponding to the minimum or maximum cell index in the multiple carrier components, or the position offset by an eighth time offset relative to the sixth start time;

[0184] 8) When the terminal is configured with carrier aggregation and multiple carrier components are configured with cell-DTX, the seventh start time of the activity time of the cell-DTX corresponding to the minimum or maximum subcarrier space (SCS) among the multiple carrier components, or the position offset by a ninth time offset relative to the seventh start time.

[0185] In this embodiment, the subcarrier spacing can be an active BWP, a dormant BWP, or an initial BWP SCS.

[0186] In this embodiment, the first reference position can be one or more reference positions determined by one or more of the above-mentioned information, thus making it applicable to different scenarios.

[0187] In some embodiments, optionally, the method further includes: the terminal receiving configuration information, the configuration information including at least one of the first reference position, the first time offset, and N. The network-side device configures the first reference position, the first time offset, and at least one of N, and the network-side device can configure the above information according to specific scenarios.

[0188] In some embodiments, optionally, at least one of the first reference position, the first time offset, and N can also be predefined by the protocol.

[0189] In related technologies, it has been discussed that LP-WUS can be listened to on a serving cell configured with Cell-DTX, but it is not specified when the terminal listens to LP-WUS, such as whether it listens to LP-WUS during the inactive time of Cell DTX, and the terminal's behavior after listening to LP-WUS.

[0190] In some embodiments, optionally, after the terminal listens to LP-WUS during the first LP-WUS listening time, it further includes:

[0191] If the terminal detects LP-WUS during the first LP-WUS listening time, the terminal activates or starts the first target timer and monitors the PDCCH during the running time of the first target timer. The running time of the first target timer at least partially overlaps with the activity time of cell-DTX of the network-side device.

[0192] or,

[0193] If the terminal does not detect LP-WUS during the first LP-WUS listening time, the terminal will not activate or start the first target timer.

[0194] In this embodiment, the terminal can activate or start the first target timer after a certain time offset following the detection of LP-WUS.

[0195] In one possible implementation, the time offset could be the processing time required for the terminal to start the first target timer.

[0196] In this embodiment, the function of LP-WUS is to enable the main communication module of the terminal to enter the on state (or working state or active state) from the off state (or sleep state). The first target timer starts after listening to LP-WUS. During the operation of the first target timer, PDCCH monitoring can be performed.

[0197] The runtime of the first target timer needs to at least partially overlap with the activity time of the cell-DTX of the network-side device; otherwise, the PDCCH cannot be detected. Please refer to [reference needed]. Figure 8If the runtime of the first target timer does not coincide with the activity time of cell-DTX, then the PDCCH will result in wasted listening time. The first target timer can be a new timer (first timer) or a traditional C-DRX duration timer, which will be explained in detail below.

[0198] In this embodiment, by setting the running time of the first target timer to at least partially overlap with the activity time of the cell-DTX of the network-side device, PDCCH monitoring waste can be avoided, thereby reducing the power consumption on the terminal side.

[0199] In some embodiments, optionally, the first target timer is a first timer, which is a timer introduced for LP-WUS, and the terminal listens to the PDCCH during the runtime of the first timer. That is, a new timer is introduced for LP-WUS, which can monitor the PDCCH during its runtime, and this timer is different from existing timers.

[0200] In some embodiments, optionally, the first target timer is a C-DRX duration timer (drx-onDurationTimer). The C-DRX duration timer is an existing C-DRX timer, during which PDCCH monitoring can be performed.

[0201] In some embodiments, optionally, the terminal activating or starting the first target timer includes: the terminal activating or starting the first target timer during the active time of cell-DTX, or the terminal activating or starting the first target timer during the inactive time of cell-DTX.

[0202] In other words, the first target timer can be activated or started during the active period of cell-DTX, or during the inactive period of cell-DTX, as long as the running time of the first target timer needs to at least partially overlap with the active period of cell-DTX.

[0203] In some embodiments, optionally, when the terminal supports carrier aggregation, the monitoring of the PDCCH during the runtime of the first target timer includes at least one of the following:

[0204] The terminal listens to the UE-specific PDCCH on all active carrier components;

[0205] When cell-DTX is configured for multiple carrier components, the terminal listens to the UE-specific PDCCH within the window where the activity time of cell-DTX for each carrier component coincides with the running time of the first target timer.

[0206] The terminal only listens to the UE-specific PDCCH within the window where the activity time of cell-DTX in the main cell coincides with the running time of the first target timer.

[0207] The terminal listens to the UE-specific PDCCH on all active serving cells.

[0208] In some embodiments, optionally, the first time offset is related to at least one of the following:

[0209] Does the terminal have carrier aggregation configured?

[0210] The number of carrier components;

[0211] The number of secondary cells (Scells).

[0212] In some embodiments, optionally, the first time offset is the same as the LP-WUS offset, which is the offset at which the terminal is configured to listen to LP-WUS.

[0213] In some embodiments, optionally, the first time offset is an offset derived to align with the activity time of cell-DTX.

[0214] In some embodiments, optionally, the first time offset is a configured offset, that is, an offset configured by the network-side device.

[0215] It should be noted that in some embodiments, the terminal may be a terminal configured with C-DRX or a terminal not configured with C-DRX.

[0216] Please refer to Figure 9 This application also provides a method for transmitting a low-power wake-up signal, including:

[0217] Step S21: The network-side device sends the LP-WUS of the serving cell of the terminal to the terminal during the first LP-WUS listening time. The serving cell is a cell with cell-DTX configured or activated.

[0218] Wherein, the first LP-WUS listening timing satisfies at least one of the following:

[0219] During the inactive time of cell-DTX;

[0220] During the active time of cell-DTX;

[0221] The listening timing is determined based on the LP-WUS configuration information;

[0222] The timing of listening within the listening window, determined by the first reference position and the first time offset;

[0223] The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

[0224] In this embodiment, the network-side device can be a wireless access network device, which is a wireless access network device corresponding to the serving cell.

[0225] In this application embodiment, the timing of LP-WUS transmission by the network side when cell-DTX is configured is clarified to ensure that the behavior of the terminal and the network side device is consistent, thereby ensuring that PDCCH monitoring is performed based on the detected LP-WUS.

[0226] In some embodiments, optionally, the first reference location includes at least one of the following:

[0227] The duration of discontinuous reception of C-DRX in the configured connected state, or the duration of downlink control information (DCP) scrambled based on the power-saving wireless network temporary identifier, or the first start time or the first end time of DCP listening, or the position offset by a second time offset relative to the first start time or the first end time.

[0228] The second start time or the second end time of the configured cell-DTX activity time, or the position offset by a third time offset relative to the second start time or the second end time;

[0229] When carrier aggregation is configured, the third start time or the third end time of the active time of cell-DTX of the main cell, or the position offset by a fourth time offset relative to the third start time or the third end time;

[0230] The fourth starting time of the union or intersection of the cell-DTX activity times of multiple serving cells connected to the terminal, or the position offset by a fifth time offset relative to the fourth starting time;

[0231] The start time of the cell-DTX activity time of the multiple serving cells connected to the terminal, or the position relative to the start time offset by a sixth time offset;

[0232] In the case of carrier aggregation configured and multiple carrier components configured with cell-DTX, the fifth start time of the union or intersection of the activity times of the cell-DTX of the multiple carrier components, or the position offset by a seventh time offset relative to the fifth start time;

[0233] When carrier aggregation is configured and multiple carrier components are configured with cell-DTX, the sixth start time of the activity time of the cell-DTX corresponding to the minimum or maximum cell index in the cell-DTX of the multiple carrier components, or the position offset by an eighth time offset relative to the sixth start time;

[0234] When carrier aggregation is configured and multiple carrier components are configured with cell-DTX, the seventh start time of the activity time of the cell-DTX corresponding to the minimum or maximum subcarrier spacing in the cell-DTX of the multiple carrier components, or the position offset by a ninth time offset relative to the seventh start time.

[0235] In some embodiments, optionally, the method further includes: the network-side device sending configuration information, the configuration information including at least one of the first reference position, the first time offset, and N.

[0236] In some embodiments, optionally, after the network-side device sends the LP-WUS of the terminal's serving cell to the terminal during the first LP-WUS sniffing, it further includes:

[0237] The network-side equipment maintains the cell-DTX activity time of the serving cell unchanged;

[0238] or

[0239] The network-side device activates or starts a second timer after the 10th time offset from the time of sending the LP-WUS of the serving cell. The second timer is a timer introduced for LP-WUS, and the running time of the second timer serves as the active time of cell-DTX.

[0240] or

[0241] The network-side device enables the activity time of the next cell-DTX cycle of the serving cell in advance.

[0242] The second timer is a new timer introduced for LP-WUS in this application. Unlike the existing Cell-DTX active timer, the operation of this timer can be considered as the active time of the serving cell's cell-DTX.

[0243] In this embodiment, the second timer can also be called the on-demand cell active time / additional cell-DTX timer.

[0244] In this context, starting the activity time of the next cell-DTX cycle of the serving cell in advance can also be described as shifting the activity time of the next cell-DTX cycle of the serving cell.

[0245] Both the second and third solutions mentioned above allow network-side devices to enter the cell-DTX activity period earlier, thereby avoiding excessive waiting time for the terminal and saving terminal power consumption.

[0246] In some embodiments, optionally, the method further includes: if the running time of the second timer overlaps with the activity time of the next cell-DTX cycle, the network-side device deactivates or does not enable the activity time of the next cell-DTX cycle, or the network-side device maintains the activity time of the next cell-DTX cycle unchanged.

[0247] If the running time of the second timer overlaps with the activity time of the next cell-DTX cycle, the network-side device can send a PDCCH during the running time of the second timer, thereby deactivating or not enabling the activity time of the next cell-DTX cycle, in order to save power consumption of the network-side device.

[0248] In some embodiments, optionally, the advance time offset of the activity time of the next cell-DTX cycle is related to at least one of the following: the transition delay of the terminal from sleep state to active state, the time for listening to the synchronization signal, the time of Radio Resource Management (RRM) measurement, the cell-DTX cycle, whether carrier aggregation is configured, the number of carrier components, and the number of secondary cells.

[0249] In some embodiments, the terminal's sleep states include three types: micro sleep, light sleep, and deep sleep. The transition latency from these three sleep states to the active state (i.e., capable of listening to the PDCCH) is 0ms, 3ms, and 10ms, respectively. If the terminal only supports one type of sleep state, the transition latency from the sleep state to the active state is known to the network-side device, or the terminal can inform the network-side device of this latency. If the terminal may have multiple sleep states, the network-side device does not know which sleep state the terminal will be in. The safest approach is for the network-side device to assume the terminal is transitioning from micro sleep to the active state and to enable DTX based on the micro sleep transition latency.

[0250] In some embodiments, optionally, the method further includes: if the activity time of the next cell-DTX cycle changes, the network-side device sends the change information of the activity time of the next cell-DTX cycle to all terminals served by the serving cell, so that the terminals can accurately obtain the activity time of the next cell-DTX cycle.

[0251] In some embodiments, optionally, the method further includes:

[0252] If the network-side device needs to send LP-WUS during a long cell-DTX or long cell-DRX period, it will enter a short cell-DTX or short cell-DRX period.

[0253] If the network-side device sends other signaling again, or if the short cell-DTX or short cell-DRX times out, the network-side device enters a long cell-DTX or long cell-DRX.

[0254] Of these, sending may or may not be required.

[0255] In this embodiment, a short cell-DTX or short cell-DRX timeout indicates that during the timer running period of short cell-DTX or short cell-DRX, the UE did not detect LP-WUS at the first monitoring time, nor did it detect PDCCH within the active time of short cell-DTX. It can then enter long cell-DTX or long cell-DRX to save power consumption.

[0256] It should be noted that in some embodiments, the terminal may be a terminal configured with C-DRX or a terminal not configured with C-DRX.

[0257] The following example illustrates the method for monitoring and sending low-power wake-up signals according to embodiments of this application, using specific application scenarios as examples.

[0258] Example 1: Listen to LP-WUS at the offset (first time offset) before the start or end of the cell-DTX activity time, C-DRX duration, and DCP duration.

[0259] like Figure 10 As shown, when the network-side device configures multiple listening times (MOs) for LP-WUS for the terminal, the network-side device only sends LP-WUS during the first listening time, and sends it during non-first listening times (i.e., ... Figure 10 LP-WUS is not sent on invalid MOs. The first listening opportunity can be one or more listening opportunities within the listening window determined by the first reference position and the first time offset (e.g., ...). Figure 10 There are two first listening opportunities. The first time offset is derived from the offset for alignment with cell-DTX on or indicated by the network-side device.

[0260] In this embodiment, the first reference position can be at least one of the following:

[0261] The first start or end time of the C-DRX duration or DCP duration or DCP listening time configured by the network-side device, or the position offset by a second time offset relative to the first start or first end time.

[0262] The second start time or the second end time of the cell-DTX activity time configured by the network-side device, or the position offset by a third time offset relative to the second start time or the second end time;

[0263] If the terminal supports carrier aggregation, the first reference location may also be at least one of the following:

[0264] When the terminal is configured with carrier aggregation, the third start time or the third end time of the active time of cell-DTX of the main cell, or the position offset by a fourth time offset relative to the third start time or the third end time;

[0265] The fourth starting time of the union or intersection of the cell-DTX activity times of multiple serving cells connected to the terminal, or the position offset by a fifth time offset relative to the fourth starting time;

[0266] The start time of the cell-DTX activity time of the multiple serving cells connected to the terminal, or the position relative to the start time offset by a sixth time offset;

[0267] When the terminal is configured with carrier aggregation and multiple carrier components are configured with cell-DTX, the fifth starting time of the union or intersection of the activity times of the cell-DTX of the multiple carrier components, or the position offset by a seventh time offset relative to the fifth starting time;

[0268] When the terminal is configured with carrier aggregation and multiple carrier components are configured with cell-DTX, the sixth start time of the activity time of the cell-DTX corresponding to the minimum or maximum cell index in the cell-DTX of the multiple carrier components, or the position offset by an eighth time offset relative to the sixth start time;

[0269] When the terminal is configured with carrier aggregation and multiple carrier components are configured with cell-DTX, the seventh start time of the activity time of the cell-DTX corresponding to the minimum or maximum subcarrier spacing in the multiple carrier components' cell-DTX, or the position offset by a ninth time offset relative to the seventh start time.

[0270] The terminal listens to LP-WUS during the first listening period, and does not listen to LP-WUS outside the first listening period.

[0271] If the terminal detects LP-WUS during the first LP-WUS listening time, the terminal activates or starts the first target timer and monitors the PDCCH during the running time of the first target timer. The running time of the first target timer at least partially overlaps with the activity time of cell-DTX of the network-side device.

[0272] The first target timer is a first timer, which is a timer introduced for LP-WUS. The terminal listens to the PDCCH during the running time of the first timer.

[0273] Alternatively, the first target timer may be a C-DRX duration timer.

[0274] When the terminal supports carrier aggregation, the monitoring of the PDCCH during the runtime of the first target timer includes at least one of the following:

[0275] The terminal listens to the UE-specific PDCCH on all active carrier components;

[0276] When cell-DTX is configured for multiple carrier components, the terminal listens to the UE-specific PDCCH within the window where the activity time of cell-DTX for each carrier component coincides with the running time of the first target timer.

[0277] The terminal only listens to the UE-specific PDCCH within the window where the activity time of cell-DTX in the main cell coincides with the running time of the first target timer.

[0278] The terminal listens to the UE-specific PDCCH on all active serving cells.

[0279] If the terminal does not detect LP-WUS during the first LP-WUS listening time, the terminal will not activate or start the first target timer.

[0280] In some embodiments, if the network-side device sends LP-WUS during the inactive time of cell-DTX, the terminal can listen to LP-WUS during the inactive time of cell-DTX. After listening to LP-WUS, the terminal does not immediately activate or start the first timer, but only activates or starts the first timer during the active time of cell-DTX to save power consumption.

[0281] Optionally, the activation or start time of the first timer is the greater of the following two values:

[0282] The start time of cell-DTX activity;

[0283] (The processing time required for LP-WUS+UE to start the first timer).

[0284] The advantage of this application embodiment is that it reduces the power consumption of the terminal by reducing the listening time of LP-WUS without affecting the power saving of the network-side equipment.

[0285] Example 2: LP-WUS triggers the terminal to activate / start a new first timer and triggers the network-side equipment to start a new second timer (or on-demand cell active time / additional Cell-DTX timer).

[0286] When cell-DTX is configured / enabled / activated in one or more serving cells on the terminal, LP-WUS triggers the terminal to activate / start a new first timer after a certain time offset, and triggers the network-side device to start a new second timer. Please refer to [link / reference]. Figure 11 ,from Figure 11As can be seen, the time windows of the first timer and the second timer overlap.

[0287] Furthermore, to reduce the impact of network-side equipment, assuming the terminal supports carrier aggregation:

[0288] The network-side equipment only starts / activates the second timer of the main cell.

[0289] Alternatively, the start time of the cell-DTX activity period of multiple serving cells connected to the terminal can be activated by a second timer for the serving cell corresponding to the cell-DTX closest to LP-WUS.

[0290] Alternatively, multiple carrier components are configured with Cell-DTX, and the second timer of the cell corresponding to the cell with the minimum or maximum cell index in the cell-DTX of the multiple carrier components.

[0291] Alternatively, multiple carrier components are configured with Cell-DTX, where the cell-DTX of the cell corresponding to the minimum or maximum subcarrier spacing is the second timer of the cell. This SCS is the SCS of the active BWP, dormant BWP, or initial BWP.

[0292] In this embodiment, if the running time of the second timer overlaps with the activity time of the next cell-DTX cycle:

[0293] The network-side device deactivates or does not enable the activity time for the next cell-DTX cycle;

[0294] Alternatively, the network-side device may maintain the same activity time for the next cell-DTX cycle.

[0295] If the activity time of the next cell-DTX cycle changes (e.g., the network-side device deactivates or does not enable the activity time of the next cell-DTX cycle), the network-side device sends the change information of the activity time of the next cell-DTX cycle to all terminals served by the serving cell.

[0296] The advantage of this embodiment is that it does not affect the gain of the terminal's LP-WUS listening in the connected state using the methods described in options 1-2, that is, it does not affect the reduction of service latency. In other words, the terminal retains its original listening behavior mode, but changes the network-side DTX to allow the DTX activity time to overlap with the terminal's PDCCH listening time, thus preserving the advantages of the original terminal in this listening mode.

[0297] Example 3: LP-WUS triggers the terminal to activate / start a new first timer, while the network-side device starts the activity time of the next cycle of cell-DTX in advance.

[0298] When cell-DTX is configured / enabled / activated in one or more serving cells on a terminal, LP-WUS triggers the terminal to activate / start a new first timer after a certain time offset, triggering the network-side device to start the activity time of the next cell-DTX cycle in advance (this can also be described as shifting the activity time of the next cell-DTX cycle). Please refer to [link / reference]. Figure 12 .

[0299] The advance time offset of the activity time of the next cell-DTX cycle is related to at least one of the following: the transition delay of the terminal from sleep state to active state, the time for listening to the synchronization signal, the time for RRM measurement, the cell-DTX cycle, whether carrier aggregation is configured, the number of carrier components, and the number of secondary cells.

[0300] Furthermore, to reduce the impact of network-side equipment, assuming the terminal supports carrier aggregation:

[0301] The network-side equipment only triggers the activity time of the next cell-DTX cycle for the primary cell to be opened in advance.

[0302] Alternatively, the start time of the cell-DTX activity period of multiple serving cells connected to the terminal can be the activity period of the next cell-DTX cycle of the serving cell corresponding to the cell-DTX closest to LP-WUS.

[0303] Alternatively, if multiple carrier components are configured with Cell-DTX, the activity time of the next cell-DTX cycle of the cell corresponding to the cell with the smallest or largest cell index in the cell-DTX of the multiple carrier components is enabled in advance.

[0304] Alternatively, if multiple carrier components are configured with Cell-DTX, the activity time of the cell corresponding to the cell with the minimum or maximum subcarrier spacing in the cell-DTX of the multiple carrier components is enabled in advance for the next cell-DTX cycle. This SCS is the SCS of the active BWP, dormant BWP, or initial BWP.

[0305] If the activity time of the next cell-DTX cycle changes (e.g., the network-side device shifts the activity time of the next cell-DTX cycle), the network-side device sends the change information of the activity time of the next cell-DTX cycle to all terminals served by the serving cell.

[0306] The advantage of this embodiment is that it does not affect the gain of the terminal's LP-WUS listening in the connected state using the methods described in options 1-2, that is, it does not affect the reduction of service latency. In other words, the terminal retains its original listening behavior mode, but changes the network-side DTX to allow the DTX activity time to overlap with the terminal's PDCCH listening time, thus preserving the advantages of the original terminal in this listening mode.

[0307] Example 4: Switching between long cell-DTX / DRX and short cell-DTX / DRX

[0308] The relationship between long cell-DTX / DRX and short cell-DTX / DRX on the network side is similar to that between long DRX and short DRX cycles on the UE side.

[0309] For example, network-side devices have long cell-DTX / DRX and short cell-DTX / DRX. Initially, the network-side device operates in long cell-DTX / DRX. Once LP-WUS is detected, it switches to short cell-DTX / DRX. The network-side device continues operating in long cell-DTX / DRX until it sends other signaling or the short cell-DTX / DRX timer times out (i.e., during the short cell-DTX / DRX timer's operation, the UE did not detect LP-WUS at the first listening opportunity, nor did it detect PDCCH during the short cell-DTX activity period). At this point, the network-side device switches to long cell-DTX / DRX to conserve power.

[0310] Example 5:

[0311] In this embodiment, the first reference position is determined starting from the start time of the union or intersection of the active times of the cell-DTX of multiple serving cells connected to the terminal. The first listening opportunity is the listening opportunity of the listening window determined by the first time offset before the first reference position, or the N listening opportunities closest to the first reference position.

[0312] Alternatively, the first reference position can be the start time of the cell-DTX activity time in each serving cell, and the first listening opportunity can be the listening opportunity within the intersection or union of the listening windows determined by the first time offset before each first reference position, or the intersection or union of multiple listening opportunities that are closest to the first reference position.

[0313] Please refer to Figure 13In an embodiment where the first reference position is determined starting from the start time of the union or intersection of the active times of multiple serving cells connected to the terminal via cell-DTX:

[0314] The start time of cell#2DTX is the start time of the union of the active times of cell-DTX of all serving cells. The first time offset forward from this start time determines the listening window, and the MO within the listening window is the first listening opportunity.

[0315] cell#2 can be a Pcell.

[0316] Please refer to Figure 14 In an embodiment where the start time of the cell-DTX activity time in each serving cell is taken as the first reference position, and the first listening opportunity is the listening opportunity within the intersection or union of the listening windows determined by the first time offset before each first reference position:

[0317] The starting time of DTX of Cell#1 is reference position #1, and the MO within the listening window (the listening window corresponding to Cell#1) determined by the first time offset from the reference position #1 is the MO that needs to be listened to.

[0318] The starting time of DTX for Cell#2 is reference position #2, and the MO within the listening window (the listening window corresponding to Cell#2) determined by the first time offset from reference position #2 is the MO that needs to be listened to.

[0319] The starting time of DTX for Cell#3 is reference position #3, and the MOs within the listening window (the listening window corresponding to Cell#3) determined by the first time offset from reference position #3 are the MOs that need to be listened to.

[0320] The intersection or union of multiple Cells within the corresponding listening window represents all the MOs that the terminal needs to listen to, i.e., the first listening opportunity.

[0321] It should be noted that in the embodiment where the start time of the cell-DTX active time in each serving cell is taken as the first reference position and the first listening opportunity is the intersection or union of multiple listening opportunities that are closest to the first reference position, the N corresponding to each serving cell can be the same or different.

[0322] For example, N can be N1 for Cell#1, N can be N2 for Cell#2, and N can be N3 for Cell#3.

[0323] The low-power wake-up signal monitoring method provided in this application can be executed by a low-power wake-up signal monitoring device. This application uses an example of a low-power wake-up signal monitoring device executing the low-power wake-up signal monitoring method to illustrate the low-power wake-up signal monitoring device provided in this application.

[0324] This application provides a low-power wake-up signal monitoring device. As an example, the low-power wake-up signal monitoring device can be a communication device or a component within a communication device, such as a chip. The communication device can be a terminal. Exemplarily, the terminal can include, but is not limited to, the types of terminals 11 listed above; this application does not impose specific limitations.

[0325] The low-power wake-up signal monitoring device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.

[0326] For details, see Figure 15 When the low-power wake-up signal monitoring device is a terminal or a component within a terminal, the low-power wake-up signal monitoring device 10 includes:

[0327] Processing module 11 is used to listen to LP-WUS during the first LP-WUS listening time when cell-DTX is configured or activated and LP-WUS is being listened to.

[0328] Wherein, the first LP-WUS listening timing satisfies at least one of the following:

[0329] During the inactive time of cell-DTX;

[0330] During the active time of cell-DTX;

[0331] The listening timing is determined based on the configured LP-WUS information;

[0332] The timing of listening within the listening window, determined by the first reference position and the first time offset;

[0333] The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

[0334] In this application embodiment, the timing of the terminal listening to LP-WUS when cell-DTX is configured is clarified to ensure that the behavior of the terminal and the network-side device is consistent, thereby ensuring that PDCCH monitoring is performed based on the LP-WUS being listened to.

[0335] Optionally, the first reference location includes at least one of the following:

[0336] The duration of discontinuous reception of C-DRX in the configured connected state, or the duration of downlink control information (DCP) scrambled based on the power-saving wireless network temporary identifier, or the first start time or the first end time of DCP listening, or the position offset by a second time offset relative to the first start time or the first end time.

[0337] The second start time or the second end time of the configured cell-DTX activity time, or the position offset by a third time offset relative to the second start time or the second end time;

[0338] When the terminal is configured with carrier aggregation, the third start time or the third end time of the active time of cell-DTX of the main cell, or the position offset by a fourth time offset relative to the third start time or the third end time;

[0339] The fourth starting time of the union or intersection of the cell-DTX activity times of multiple serving cells connected to the terminal, or the position offset by a fifth time offset relative to the fourth starting time;

[0340] The start time of the cell-DTX activity time of the multiple serving cells connected to the terminal, or the position relative to the start time offset by a sixth time offset;

[0341] When the terminal is configured with carrier aggregation and multiple carrier components are configured with cell-DTX, the fifth starting time of the union or intersection of the activity times of the cell-DTX of the multiple carrier components, or the position offset by a seventh time offset relative to the fifth starting time;

[0342] When the terminal is configured with carrier aggregation and multiple carrier components are configured with cell-DTX, the sixth start time of the activity time of the cell-DTX corresponding to the minimum or maximum cell index in the cell-DTX of the multiple carrier components, or the position offset by an eighth time offset relative to the sixth start time;

[0343] When the terminal is configured with carrier aggregation and multiple carrier components are configured with cell-DTX, the seventh start time of the activity time of the cell-DTX corresponding to the minimum or maximum subcarrier spacing in the multiple carrier components' cell-DTX, or the position offset by a ninth time offset relative to the seventh start time.

[0344] Optional, also includes:

[0345] A receiving module is used to receive configuration information, which includes at least one of the following: the first reference position, the first time offset, and N.

[0346] Optionally, the processing module 11 is further configured to activate or start a first target timer if LP-WUS is detected during the first LP-WUS listening time, and monitor PDCCH during the running time of the first target timer, wherein the running time of the first target timer at least partially overlaps with the activity time of cell-DTX of the network-side device.

[0347] or,

[0348] The processing module 11 is further configured to not activate or start the first target timer if LP-WUS is not detected during the first LP-WUS listening time.

[0349] Optionally, the first target timer is a first timer, which is a timer introduced for LP-WUS, and the terminal listens to the PDCCH during the running time of the first timer;

[0350] Alternatively, the first target timer may be a C-DRX duration timer.

[0351] Optionally, the processing module 11 is further configured to activate or enable the first target timer during the active time of cell-DTX, or the terminal to activate or enable the first target timer during the inactive time of cell-DTX.

[0352] Optionally, if the terminal supports carrier aggregation, the monitoring of the PDCCH during the runtime of the first target timer includes at least one of the following:

[0353] The terminal listens to the UE-specific PDCCH on all active carrier components;

[0354] When cell-DTX is configured for multiple carrier components, the terminal listens to the UE-specific PDCCH within the window where the activity time of cell-DTX for each carrier component coincides with the running time of the first target timer.

[0355] The terminal only listens to the UE-specific PDCCH within the window where the activity time of cell-DTX in the main cell coincides with the running time of the first target timer.

[0356] The terminal listens to the UE-specific PDCCH on all active serving cells.

[0357] Optionally, the first time offset is related to at least one of the following:

[0358] Does the terminal have carrier aggregation configured?

[0359] The number of carrier components;

[0360] The number of auxiliary communities.

[0361] Optionally, the first time offset is the same as the LP-WUS offset, where the LP-WUS offset is the offset at which the terminal is configured to listen to LP-WUS.

[0362] Alternatively, the first time offset is an offset derived to align with the activity time of cell-DTX;

[0363] Alternatively, the first time offset is the configured offset.

[0364] The low-power wake-up signal monitoring device provided in this application embodiment can achieve Figure 7 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0365] The low-power wake-up signal transmission method provided in this application can be executed by a low-power wake-up signal transmission device. This application uses an example of a low-power wake-up signal transmission device executing the low-power wake-up signal transmission method to illustrate the low-power wake-up signal transmission device provided in this application.

[0366] This application provides a low-power wake-up signal transmitting device. As an example, the low-power wake-up signal transmitting device can be a communication device or a component in a communication device, such as a chip. The communication device can be a network-side device or a server, etc. Exemplarily, the network-side device can include, but is not limited to, the types of network-side devices 12 listed above, and this application embodiment does not specifically limit it.

[0367] The low-power wake-up signal transmitting device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.

[0368] For details, see Figure 16 When the device for listening to the low-power wake-up signal is a terminal or a component within the terminal, the low-power wake-up signal transmitting device 20 includes:

[0369] The sending module 21 is used to send the LP-WUS of the serving cell of the terminal to the terminal during the first LP-WUS listening time. The serving cell is a cell that is configured or activated to transmit cell-DTX discontinuously.

[0370] Wherein, the first LP-WUS listening timing satisfies at least one of the following:

[0371] During the inactive time of cell-DTX;

[0372] During the active time of cell-DTX;

[0373] The listening timing is determined based on the LP-WUS configuration information;

[0374] The timing of listening within the listening window, determined by the first reference position and the first time offset;

[0375] The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

[0376] In this application embodiment, the timing of LP-WUS transmission by the network side when cell-DTX is configured is clarified to ensure that the behavior of the terminal and the network side device is consistent, thereby ensuring that PDCCH monitoring is performed based on the detected LP-WUS.

[0377] Optionally, the first reference location includes at least one of the following:

[0378] The duration of discontinuous reception of C-DRX in the configured connected state, or the duration of downlink control information (DCP) scrambled based on the power-saving wireless network temporary identifier, or the first start time or the first end time of DCP listening, or the position offset by a second time offset relative to the first start time or the first end time.

[0379] The second start time or the second end time of the configured cell-DTX activity time, or the position offset by a third time offset relative to the second start time or the second end time;

[0380] When carrier aggregation is configured, the third start time or the third end time of the active time of cell-DTX of the main cell, or the position offset by a fourth time offset relative to the third start time or the third end time;

[0381] The fourth starting time of the union or intersection of the cell-DTX activity times of multiple serving cells connected to the terminal, or the position offset by a fifth time offset relative to the fourth starting time;

[0382] The start time of the cell-DTX activity time of the multiple serving cells connected to the terminal, or the position relative to the start time offset by a sixth time offset;

[0383] In the case of carrier aggregation configured and multiple carrier components configured with cell-DTX, the fifth start time of the union or intersection of the activity times of the cell-DTX of the multiple carrier components, or the position offset by a seventh time offset relative to the fifth start time;

[0384] When carrier aggregation is configured and multiple carrier components are configured with cell-DTX, the sixth start time of the activity time of the cell-DTX corresponding to the minimum or maximum cell index in the cell-DTX of the multiple carrier components, or the position offset by an eighth time offset relative to the sixth start time;

[0385] When carrier aggregation is configured and multiple carrier components are configured with cell-DTX, the seventh start time of the activity time of the cell-DTX corresponding to the minimum or maximum subcarrier spacing in the cell-DTX of the multiple carrier components, or the position offset by a ninth time offset relative to the seventh start time.

[0386] Optionally, the sending module 21 is used to send configuration information, which includes at least one of the first reference position, the first time offset, and N.

[0387] Optional, also includes:

[0388] The processing module is used to maintain the cell-DTX activity time of the serving cell unchanged;

[0389] or

[0390] The processing module is used to activate or start a second timer after the 10th time offset from the LP-WUS of the serving cell. The second timer is a timer introduced for LP-WUS, and the running time of the second timer serves as the active time of cell-DTX.

[0391] or

[0392] The processing module is used to enable the activity time of the next cell-DTX cycle of the serving cell in advance.

[0393] Optionally, the processing module is further configured to, if the running time of the second timer overlaps with the activity time of the next cell-DTX cycle, either deactivate or not enable the activity time of the next cell-DTX cycle, or maintain the activity time of the next cell-DTX cycle unchanged.

[0394] Optionally, the advance time offset of the activity time of the next cell-DTX cycle is related to at least one of the following: the transition delay of the terminal from sleep state to active state, the time for listening to the synchronization signal, the time for radio resource management (RRM) measurement, the cell-DTX cycle, whether carrier aggregation is configured, the number of carrier components, and the number of secondary cells.

[0395] Optionally, the sending module is further configured to send information about the change in the activity time of the next cell-DTX cycle to all terminals served by the serving cell if the activity time of the next cell-DTX cycle changes.

[0396] Optional, also includes:

[0397] The processing module is used to transition from a long cell-DTX or long cell-DRX period to a short cell-DTX or short cell-DRX period if LP-WUS needs to be sent; and to a long cell-DTX or long cell-DRX period if other signaling is sent again, or if the short cell-DTX or short cell-DRX times out.

[0398] The low-power wake-up signal transmitting device provided in this application embodiment can achieve Figure 9 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0399] like Figure 17 As shown, this application embodiment also provides a communication device 30, including a processor 31 and a memory 32. The memory 32 stores a program or instructions that can run on the processor 31. For example, when the communication device 30 is a terminal, the program or instructions executed by the processor 31 implement the various steps of the above-described low-power wake-up signal monitoring method embodiment, and achieve the same technical effect. When the communication device 30 is a network-side device, the program or instructions executed by the processor 31 implement the various steps of the above-described low-power wake-up signal sending method embodiment, and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0400] This application embodiment also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 7 The steps in the method embodiment shown are illustrated. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. The terminal can be... Figure 15 The device shown is a low-power wake-up signal monitoring device. Specifically, Figure 18A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0401] The terminal 40 includes, but is not limited to, at least some of the following components: radio frequency unit 41, network module 42, audio output unit 43, input unit 44, sensor 45, display unit 46, user input unit 47, interface unit 48, memory 49, and processor 410.

[0402] Those skilled in the art will understand that the terminal 40 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 410 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 18 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0403] It should be understood that, in this embodiment, the input unit 44 may include a graphics processor 441 and a microphone 442. The graphics processor 441 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 46 may include a display panel 461, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 47 includes at least one of a touch panel 471 and other input devices 472. The touch panel 471 is also called a touch screen. The touch panel 471 may include two parts: a touch detection device and a touch controller. Other input devices 472 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0404] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 41 can transmit it to the processor 410 for processing; in addition, the radio frequency unit 41 can send uplink data to the network-side device. Typically, the radio frequency unit 41 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0405] The memory 49 can be used to store software programs or instructions, as well as various data. The memory 49 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 49 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 49 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0406] Processor 410 may include one or more processing units; optionally, processor 410 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 410.

[0407] Among them, the processor 410 is used to listen to LP-WUS during the first LP-WUS listening time when the cell is configured or activated to transmit cell-DTX and listen to LP-WUS discontinuously.

[0408] Wherein, the first LP-WUS listening timing satisfies at least one of the following:

[0409] During the inactive time of cell-DTX;

[0410] During the active time of cell-DTX;

[0411] The listening timing is determined based on the configured LP-WUS information;

[0412] The timing of listening within the listening window, determined by the first reference position and the first time offset;

[0413] The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

[0414] In this application embodiment, the timing of the terminal listening to LP-WUS when cell-DTX is configured is clarified to ensure that the behavior of the terminal and the network-side device is consistent, thereby ensuring that PDCCH monitoring is performed based on the LP-WUS being listened to.

[0415] It is understood that the implementation process of each implementation method mentioned in this embodiment can be referred to Figure 7 The relevant descriptions of the method embodiments shown herein, which achieve the same or corresponding technical effects, will not be repeated here to avoid duplication.

[0416] This application embodiment also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 9 The steps of the method embodiment shown are illustrated. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0417] Specifically, embodiments of this application also provide a network-side device, which can be... Figure 16 The device shown is a low-power wake-up signal transmitting device. For example... Figure 19 As shown, the network-side device 50 includes: an antenna 51, a radio frequency (RF) device 52, a baseband device 53, a processor 54, and a memory 55. The antenna 51 is connected to the RF device 52. In the uplink direction, the RF device 52 receives information through the antenna 51 and sends the received information to the baseband device 53 for processing. In the downlink direction, the baseband device 53 processes the information to be transmitted and sends it to the RF device 52. The RF device 52 processes the received information and then transmits it through the antenna 51.

[0418] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 53, which includes a baseband processor.

[0419] Baseband device 53 may include, for example, at least one baseband board on which multiple chips are disposed, such as Figure 5As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 55 via a bus interface to call the program or instructions in the memory 55 to execute the network-side device operations shown in the above method embodiment.

[0420] The network-side device may also include a network interface 56, such as a Common Public Radio Interface (CPRI).

[0421] The radio frequency device 52 is used to send the LP-WUS of the serving cell of the terminal to the terminal during the first LP-WUS listening time. The serving cell is a cell with cell-DTX configured or activated.

[0422] Wherein, the first LP-WUS listening timing satisfies at least one of the following:

[0423] During the inactive time of cell-DTX;

[0424] During the active time of cell-DTX;

[0425] The listening timing is determined based on the LP-WUS configuration information;

[0426] The timing of listening within the listening window, determined by the first reference position and the first time offset;

[0427] The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

[0428] Furthermore, the network-side device 50 in this embodiment of the application also includes: a program or instructions stored in the memory 55 and executable on the processor 54, wherein the processor 54 calls the program or instructions in the memory 55 to execute. Figure 16 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0429] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described low-power wake-up signal monitoring method or low-power wake-up signal sending method embodiments, and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0430] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0431] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described low-power wake-up signal monitoring method or low-power wake-up signal sending method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0432] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0433] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described low-power wake-up signal monitoring method or low-power wake-up signal transmission method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0434] This application also provides a wireless communication system, including: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the low-power wake-up signal listening method as described above, and the network-side device can be used to perform the steps of the low-power wake-up signal sending method as described above.

[0435] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0436] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0437] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A method for monitoring a low-power wake-up signal LP-WUS, characterized in that, include: When the terminal is configured or activated to transmit cell-DTX and listen to LP-WUS discontinuously, it listens to LP-WUS during the first LP-WUS listening time. Wherein, the first LP-WUS listening timing satisfies at least one of the following: During the inactive time of cell-DTX; During the active time of cell-DTX; The listening timing is determined based on the configured LP-WUS information; The timing of listening within the listening window, determined by the first reference position and the first time offset; The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

2. The method according to claim 1, characterized in that, The first reference location includes at least one of the following: The duration of discontinuous reception of C-DRX in the configured connected state, or the duration of downlink control information (DCP) scrambled based on the power-saving wireless network temporary identifier, or the first start time or the first end time of DCP listening, or the position offset by a second time offset relative to the first start time or the first end time. The second start time or the second end time of the configured cell-DTX activity time, or the position offset by a third time offset relative to the second start time or the second end time; When the terminal is configured with carrier aggregation, the third start time or the third end time of the active time of cell-DTX of the main cell, or the position offset by a fourth time offset relative to the third start time or the third end time; The fourth starting time of the union or intersection of the cell-DTX activity times of multiple serving cells connected to the terminal, or the position offset by a fifth time offset relative to the fourth starting time; The start time of the cell-DTX activity time of the multiple serving cells connected to the terminal, or the position relative to the start time offset by a sixth time offset; When the terminal is configured with carrier aggregation and multiple carrier components are configured with cell-DTX, the fifth starting time of the union or intersection of the activity times of the cell-DTX of the multiple carrier components, or the position offset by a seventh time offset relative to the fifth starting time; When the terminal is configured with carrier aggregation and multiple carrier components are configured with cell-DTX, the sixth start time of the activity time of the cell-DTX corresponding to the minimum or maximum cell index in the cell-DTX of the multiple carrier components, or the position offset by an eighth time offset relative to the sixth start time; When the terminal is configured with carrier aggregation and multiple carrier components are configured with cell-DTX, the seventh start time of the activity time of the cell-DTX corresponding to the minimum or maximum subcarrier spacing in the multiple carrier components' cell-DTX, or the position offset by a ninth time offset relative to the seventh start time.

3. The method according to claim 1 or 2, characterized in that, Also includes: The terminal receives configuration information, which includes at least one of the following: the first reference position, the first time offset, and N.

4. The method according to any one of claims 1-3, characterized in that, After the terminal listens to LP-WUS during the first LP-WUS listening session, it also includes: If the terminal detects LP-WUS during the first LP-WUS listening time, the terminal activates or starts the first target timer and monitors the PDCCH during the running time of the first target timer. The running time of the first target timer at least partially overlaps with the activity time of cell-DTX of the network-side device. or, If the terminal does not detect LP-WUS during the first LP-WUS listening time, the terminal will not activate or start the first target timer.

5. The method according to claim 4, characterized in that, The first target timer is a first timer, which is a timer introduced for LP-WUS. The terminal listens to the PDCCH during the running time of the first timer. Alternatively, the first target timer may be a C-DRX duration timer.

6. The method according to claim 4 or 5, characterized in that, The terminal activating or starting the first target timer includes: The terminal activates or enables the first target timer during the active period of cell-DTX, or the terminal activates or enables the first target timer during the inactive period of cell-DTX.

7. The method according to any one of claims 4-6, characterized in that, When the terminal supports carrier aggregation, the monitoring of the PDCCH during the runtime of the first target timer includes at least one of the following: The terminal listens to the UE-specific PDCCH on all active carrier components; When cell-DTX is configured for multiple carrier components, the terminal listens to the UE-specific PDCCH within the window where the activity time of cell-DTX for each carrier component coincides with the running time of the first target timer. The terminal only listens to the UE-specific PDCCH within the window where the activity time of cell-DTX in the main cell coincides with the running time of the first target timer. The terminal listens to the UE-specific PDCCH on all active serving cells.

8. The method according to any one of claims 1-7, characterized in that, The first time offset is related to at least one of the following: Does the terminal have carrier aggregation configured? The number of carrier components; The number of auxiliary communities.

9. The method according to any one of claims 1-8, characterized in that, The first time offset is the same as the LP-WUS offset, which is the offset at which the terminal is configured to listen to LP-WUS. Alternatively, the first time offset is an offset derived to align with the activity time of cell-DTX; Alternatively, the first time offset is the configured offset.

10. A method for transmitting a low-power wake-up signal, characterized in that, include: When the network-side device detects the first LP-WUS, it sends the LP-WUS of the serving cell of the terminal to the terminal. The serving cell is a cell that has configured or activated cell-DTX. Wherein, the first LP-WUS listening timing satisfies at least one of the following: During the inactive time of cell-DTX; During the active time of cell-DTX; The listening timing is determined based on the LP-WUS configuration information; The timing of listening within the listening window, determined by the first reference position and the first time offset; The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

11. The method according to claim 10, characterized in that, The first reference location includes at least one of the following: The duration of discontinuous reception of C-DRX in the configured connected state, or the duration of downlink control information (DCP) scrambled based on the power-saving wireless network temporary identifier, or the first start time or the first end time of DCP listening, or the position offset by a second time offset relative to the first start time or the first end time. The second start time or the second end time of the configured cell-DTX activity time, or the position offset by a third time offset relative to the second start time or the second end time; When carrier aggregation is configured, the third start time or the third end time of the active time of cell-DTX of the main cell, or the position offset by a fourth time offset relative to the third start time or the third end time; The fourth starting time of the union or intersection of the cell-DTX activity times of multiple serving cells connected to the terminal, or the position offset by a fifth time offset relative to the fourth starting time; The start time of the cell-DTX activity time of the multiple serving cells connected to the terminal, or the position relative to the start time offset by a sixth time offset; In the case of carrier aggregation configured and multiple carrier components configured with cell-DTX, the fifth start time of the union or intersection of the activity times of the cell-DTX of the multiple carrier components, or the position offset by a seventh time offset relative to the fifth start time; When carrier aggregation is configured and multiple carrier components are configured with cell-DTX, the sixth start time of the activity time of the cell-DTX corresponding to the minimum or maximum cell index in the cell-DTX of the multiple carrier components, or the position offset by an eighth time offset relative to the sixth start time; When carrier aggregation is configured and multiple carrier components are configured with cell-DTX, the seventh start time of the activity time of the cell-DTX corresponding to the minimum or maximum subcarrier spacing in the cell-DTX of the multiple carrier components, or the position offset by a ninth time offset relative to the seventh start time.

12. The method according to claim 10 or 11, characterized in that, Also includes: The network-side device sends configuration information, which includes at least one of the first reference position, the first time offset, and N.

13. The method according to any one of claims 10-12, characterized in that, After the network-side device sends the LP-WUS of the serving cell of the terminal to the terminal during the first LP-WUS sniffing, it also includes: The network-side equipment maintains the cell-DTX activity time of the serving cell unchanged; or The network-side device activates or starts a second timer after the 10th time offset from the time of sending the LP-WUS of the serving cell. The second timer is a timer introduced for LP-WUS, and the running time of the second timer serves as the active time of cell-DTX. or The network-side device enables the activity time of the next cell-DTX cycle of the serving cell in advance.

14. The method according to claim 13, characterized in that, Also includes: If the running time of the second timer overlaps with the activity time of the next cell-DTX cycle, the network-side device deactivates or does not enable the activity time of the next cell-DTX cycle, or the network-side device maintains the activity time of the next cell-DTX cycle unchanged.

15. The method according to claim 13, characterized in that, The advance time offset of the activity time of the next cell-DTX cycle is related to at least one of the following: the transition delay of the terminal from sleep state to active state, the time for listening to the synchronization signal, the time for Radio Resource Management (RRM) measurement, the cell-DTX cycle, whether carrier aggregation is configured, the number of carrier components, and the number of secondary cells.

16. The method according to claim 13 or 15, characterized in that, Also includes: If the activity time of the next cell-DTX cycle changes, the network-side device sends the change information of the activity time of the next cell-DTX cycle to all terminals served by the serving cell.

17. The method according to any one of claims 10-16, characterized in that, Also includes: If the network-side device needs to send LP-WUS during a long cell-DTX or long cell-DRX period, it will enter a short cell-DTX or short cell-DRX period. If the network-side device sends other signaling again, or if the short cell-DTX or short cell-DRX times out, the network-side device enters a long cell-DTX or long cell-DRX.

18. A low-power wake-up signal monitoring device, characterized in that, include: The processing module is used to listen to LP-WUS during the first LP-WUS listening time when cell-DTX is configured or activated and LP-WUS is being listened to. Wherein, the first LP-WUS listening timing satisfies at least one of the following: During the inactive time of cell-DTX; During the active time of cell-DTX; The listening timing is determined based on the configured LP-WUS information; The timing of listening within the listening window, determined by the first reference position and the first time offset; The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

19. The apparatus according to claim 18, characterized in that, Also includes: A receiving module is used to receive configuration information, which includes at least one of the following: the first reference position, the first time offset, and N.

20. The apparatus according to claim 18 or 19, characterized in that, The processing module is further configured to activate or start a first target timer if LP-WUS is detected during the first LP-WUS listening time, and monitor PDCCH during the running time of the first target timer, wherein the running time of the first target timer at least partially overlaps with the activity time of cell-DTX of the network-side device. or, The processing module is further configured to not activate or start the first target timer if LP-WUS is not detected during the first LP-WUS listening time.

21. A low-power wake-up signal transmitting device, characterized in that, include: The transmitting module is used to transmit the LP-WUS of the serving cell of the terminal to the terminal during the first LP-WUS listening time. The serving cell is a cell that is configured or activated to transmit cell-DTX discontinuously. Wherein, the first LP-WUS listening timing satisfies at least one of the following: During the inactive time of cell-DTX; During the active time of cell-DTX; The listening timing is determined based on the LP-WUS configuration information; The timing of listening within the listening window, determined by the first reference position and the first time offset; The N listening opportunities that are closest to the first reference position, where N is greater than or equal to 1.

22. The apparatus according to claim 21, characterized in that, The sending module is used to send configuration information, which includes at least one of the first reference position, the first time offset, and N.

23. The apparatus according to claim 21 or 22, characterized in that, Also includes: The processing module is used to maintain the cell-DTX activity time of the serving cell unchanged; or The processing module is used to activate or start a second timer after the 10th time offset from the LP-WUS of the serving cell. The second timer is a timer introduced for LP-WUS, and the running time of the second timer serves as the active time of cell-DTX. or The processing module is used to enable the activity time of the next cell-DTX cycle of the serving cell in advance.

24. The apparatus according to claim 23, characterized in that, The processing module is further configured to, if the running time of the second timer overlaps with the activity time of the next cell-DTX cycle, either deactivate or not enable the activity time of the next cell-DTX cycle, or maintain the activity time of the next cell-DTX cycle unchanged.

25. The apparatus according to claim 23, characterized in that, The sending module is further configured to send information about the change in the activity time of the next cell-DTX cycle to all terminals served by the serving cell if the activity time of the next cell-DTX cycle changes.

26. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the low-power wake-up signal listening method as described in any one of claims 1 to 9.

27. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the method for sending a low-power wake-up signal as described in any one of claims 10 to 17.

28. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions, which, when executed by a processor, implement the method for listening to a low-power wake-up signal as described in any one of claims 1 to 9, or the method for sending a low-power wake-up signal as described in any one of claims 10 to 17.

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