Wireless communication method and apparatus, and device

Abstract

The present application relates to the field of communications, and discloses a wireless communication method and apparatus, and a device. The wireless communication method in embodiments of the present application comprises: when a first condition or a second condition is satisfied, a terminal assumes that a first signal is present before a target monitoring occasion, wherein the first signal is used for synchronization, and the target monitoring occasion is used for the terminal to monitor a second signal; and the first signal and the second signal are discontinuous in time domain, or the first signal and the second signal are continuous in time domain.

Description

Wireless communication methods, apparatus and equipment

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411544522.8, filed on October 31, 2024, entitled "Wireless Communication Method, Apparatus and Device", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, specifically relating to a wireless communication method, apparatus, and device. Background Technology

[0004] To reduce the receiving activity of the terminal in standby mode, a low-power wake-up radio (LP-WUR) is introduced, which truly shuts down the terminal's radio frequency (RF) module and baseband (MODEM) module, thereby greatly reducing the power consumption of communication reception.

[0005] In related technologies, the low-power synchronization signal (LP-SS) used for LP-WUR synchronization can be a periodic synchronization signal. In order to meet the performance requirements of Radio Resource Management (RRM), the period must not exceed a certain time threshold. Based on this period, due to the residual time-frequency offset after LP-SS synchronization, the accumulated time-frequency offset during the reception of the low-power wake-up signal (LP-WUS) may be large, affecting the reception performance of LP-WUS. Summary of the Invention

[0006] This application provides a wireless communication method, apparatus, and device that can solve the synchronization problem of LP-WUR.

[0007] Firstly, a wireless communication method is provided, comprising:

[0008] If either the first or second condition is met, the terminal assumes that a first signal existed before the target listening opportunity.

[0009] Wherein, the first signal is used for synchronization, and the target listening timing is used for the terminal to listen to the second signal;

[0010] Wherein, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain.

[0011] Secondly, another wireless communication method is provided, including:

[0012] If the third or fourth condition is met, the network-side device sends a first signal for synchronization.

[0013] Wherein, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain.

[0014] Thirdly, a wireless communication device is provided, comprising: a processing module;

[0015] If the first or second condition is met, the processing module is used to assume that a first signal existed before the target listening time;

[0016] Wherein, the first signal is used for synchronization, and the target listening timing is used for the terminal to listen to the second signal;

[0017] Wherein, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain.

[0018] Fourthly, another wireless communication device is provided, including: a transmitting module;

[0019] If the third or fourth condition is met, the transmitting module is used to transmit a first signal for synchronization;

[0020] Wherein, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain.

[0021] Fifthly, a wireless communication device is provided, the device being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0022] In a sixth 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.

[0023] Seventhly, a terminal is provided, including a processor and a communication interface;

[0024] Wherein, if the first condition or the second condition is met, the processor is configured to assume that a first signal exists before the target listening time;

[0025] Wherein, the first signal is used for synchronization, and the target listening timing is used for the terminal to listen to the second signal;

[0026] Wherein, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain.

[0027] Eighthly, 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.

[0028] Ninthly, a network-side device is provided, including a processor and a communication interface;

[0029] Wherein, if the third or fourth condition is met, the communication interface is used to send a first signal for synchronization;

[0030] Wherein, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain.

[0031] In a tenth aspect, 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.

[0032] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0033] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0034] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the wireless communication method as described in the first aspect, or to implement the steps of the wireless communication method as described in the second aspect.

[0035] In an embodiment of the first aspect of this application, when a first condition or a second condition is met, the terminal assumes that a first signal exists before the target listening time; wherein the first signal is used for synchronization, the target listening time is used for the terminal to listen to a second signal, and the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain. Introducing the first condition or the second condition can reduce the overhead of the synchronization signal while satisfying the synchronization requirements corresponding to the listening of the second signal. For example, the first signal is LP-SS for LP-WUR synchronization, and the second signal is LP-WUS; specifically, compared to periodic LP-SS, when the first condition or the second condition is met, the terminal assumes that LP-SS exists before the listening time of LP-WUS, which can reduce the residual time-frequency offset after LP-SS synchronization and improve the receiving performance of LP-WUS; and compared to non-periodic LP-SS, when the first condition or the second condition is met, the terminal assumes that LP-SS exists before the listening time of LP-WUS, which can reduce the transmission density of LP-SS, and can reduce the overhead of LP-SS while satisfying the synchronization requirements corresponding to the listening of LP-WUS.

[0036] In an embodiment of the second aspect of this application, the network-side device transmits a first signal for synchronization when a third or fourth condition is met. The first signal is used for synchronization, and it is either discontinuous in the time domain with the second signal, or continuous in the time domain with the second signal. Introducing the third or fourth condition reduces the overhead of the synchronization signal while satisfying the synchronization requirements corresponding to the monitoring of the second signal. For example, the first signal is an LP-SS for LP-WUR synchronization, and the second signal is an LP-WUS. Specifically, compared to periodic LP-SS, transmitting LP-SS for synchronization when the third or fourth condition is met can reduce the residual time-frequency offset after LP-SS synchronization, improving the reception performance of LP-WUS. Furthermore, compared to non-periodic LP-SS, transmitting LP-SS for synchronization when the third or fourth condition is met can reduce the transmission density of LP-SS, thus reducing the overhead of LP-SS while satisfying the synchronization requirements corresponding to the monitoring of LP-WUS. Attached Figure Description

[0037] Figure 1 is a schematic diagram of a communication system architecture provided in an embodiment of this application.

[0038] Figure 2 is a schematic diagram illustrating the basic working principle of a low-power receiver provided in this application.

[0039] Figure 3 is a schematic flowchart of a wireless communication method provided according to an embodiment of this application.

[0040] Figure 4 is a schematic flowchart of another wireless communication method provided according to an embodiment of this application.

[0041] Figures 5 to 11 are schematic diagrams of the transmission timing of the first signal according to the embodiments of this application.

[0042] Figure 12 is a schematic block diagram of a wireless communication device according to an embodiment of this application.

[0043] Figure 13 is a schematic block diagram of another wireless communication device provided according to an embodiment of this application.

[0044] Figure 14 is a schematic block diagram of a communication device provided according to an embodiment of this application.

[0045] Figure 15 is a schematic diagram of the hardware structure of a terminal according to an embodiment of this application.

[0046] Figure 16 is a schematic block diagram of a network-side device provided according to an embodiment of this application. Detailed Implementation

[0047] 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.

[0048] 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.

[0049] 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 one in which the sender explicitly informs the receiver of specific information, the operation to be performed, or the requested result, etc., in the instruction sent. An indirect instruction can be understood as one in which the receiver determines the corresponding information based on the instruction sent by the sender, or makes a judgment and determines the operation to be performed or the requested result, etc., based on the judgment result.

[0050] 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.

[0051] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment of this application. Specifically, the wireless communication system includes a terminal 11 and a network-side device 12.

[0052] Terminal 11 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), shipborne equipment, pedestrian user equipment (PUE), smart home device (home device with wireless communication function, such as refrigerator, television, washing machine or furniture), game console, personal computer (PC), ATM or self-service machine, 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 the embodiments of this application.

[0053] Among them, network-side equipment 12 may include access network equipment.

[0054] Alternatively, 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. The term "base station" 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), or any other suitable term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to any specific technical terminology. It should be noted that this application embodiment only uses a base station in an NR system as an example for description and does not limit the specific type of base station.

[0055] To better understand the technical solution of this application, the low-power receiver related to this application is described below.

[0056] Low power receivers are also known as low power wake-up radios (LP-WUR) or near-zero power wake-up radios (AZP-WUR).

[0057] The basic working principle of a low-power receiver is that the receiver includes a first module and a second module; as shown in Figure 2, the first module is the main communication module, used for transmitting 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). Specifically, in power-saving mode, the terminal turns on the low-power receiver module to listen for LP-WUS and turns off the main communication module. When downlink data arrives, the network-side device sends LP-WUS to the terminal. After the terminal listens for LP-WUS through the low-power receiver module, it triggers the main communication module to turn on from off, or to turn on from sleep mode, after a series of judgments. At the same time, the low-power receiver module turns off from working mode, or turns on from working mode to sleep mode. Optionally, the low-power receiver module can be continuously or intermittently turned on, and can receive LP-WUS when it is turned on.

[0058] To better understand the technical solution of this application, the following describes the LP-WUS related to this application.

[0059] 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, this can be achieved by introducing a near-zero power receiver (also known as an LP-WUR or AZP-WUR) into the terminal's receiver module. This near-zero power receiver eliminates the need for complex signal detection (such as amplification, filtering, and quantization) from the RF module and signal processing from the modem module, relying solely on passive matched filtering and low-power signal processing.

[0060] On the base station side, by triggering LP-WUS on demand, the receiver with near-zero power can be activated to receive the activation notification, thereby triggering a series of processes inside the terminal, such as turning on modules like RF transceiver and baseband processing (e.g., RF module and baseband module).

[0061] LP-WUS typically involves relatively simple on-off keying signals, allowing a near-zero power receiver to receive the wake-up notification through simple energy detection and subsequent sequence detection and identification. Furthermore, while the terminal is activating its near-zero power receiver to receive LP-WUS, the terminal's main receiver module can operate at a low power consumption level, thus achieving power savings by receiving the wake-up signal.

[0062] The wireless communication method provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0063] Figure 3 is a schematic flowchart of a wireless communication method 200 according to an embodiment of this application. As shown in Figure 3, the wireless communication method 200 may include at least some of the following:

[0064] S210, if the first condition or the second condition is met, the terminal assumes that a first signal exists before the target listening time; wherein the first signal is used for synchronization, and the target listening time is used for the terminal to listen to the second signal; wherein the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain.

[0065] It should be understood that Figure 3 illustrates the steps or operations of the wireless communication method 200, but these steps or operations are merely examples, and other operations or variations of the operations shown in Figure 3 may also be performed in this application.

[0066] In this embodiment, the first signal can be a synchronization signal transmitted on demand. To improve resource efficiency, the network-side device can send the first signal on demand. For example, the network-side device can configure the transmission timing of the first signal, but whether the first signal is sent during the transmission timing can be determined by the network-side device based on specific conditions. Accordingly, if the first condition or the second condition is met, the terminal assumes that the first signal existed before the target listening time. That is, whether the first signal exists during a transmission timing of the first signal can be determined based on the first condition or the second condition. For example, if the first condition or the second condition is met, the terminal assumes that the first signal existed before the target listening time; if the first condition or the second condition is not met, the terminal assumes that the first signal did not exist before the target listening time.

[0067] The monitoring timing described in this application embodiment can also be referred to as or replaced by the transmission timing. The monitoring timing corresponds to the receiving end, and the transmission timing corresponds to the sending end.

[0068] In this embodiment, under the condition of satisfying either the first or the second condition, the terminal assumes that a first signal exists before the target listening time; wherein, the first signal is used for synchronization, the target listening time is used for the terminal to listen to the second signal, and the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain. Introducing the first or the second condition can reduce the overhead of the synchronization signal while satisfying the synchronization requirements corresponding to the listening of the second signal.

[0069] The embodiments of this application are applicable to at least one Radio Resource Control (RRC) state, such as the RRC idle state or inactive state, and also the RRC connected state.

[0070] In some embodiments, the second signal is used to wake up the terminal. Optionally, the second signal is LP-WUS. It should be noted that the second signal can also be other downlink signals, and this application embodiment is not limited to this.

[0071] The embodiments of this application are applicable to scenarios where the LP-WUS wake-up terminal receives paging messages, scenarios where the LP-WUS wake-up terminal monitors the Physical Downlink Control Channel (PDCCH), scenarios where the LP-WUS wake-up terminal enables Discontinuous Reception (DRX), and other scenarios where the LP-WUS wake-up terminal is used.

[0072] The embodiments of this application are also applicable to other scenarios that require synchronization or measurement assisted by non-periodic signals, and may be independent of LP-WUS. The embodiments of this application are not limited in this respect.

[0073] In some embodiments, the first signal may be a low-power synchronization signal (LP-SS) for LP-WUR synchronization. It should be noted that the first signal may also be other synchronization signals, and this application embodiment is not limited to this.

[0074] In this embodiment, the network-side device can configure either aperiodic or periodic synchronization signal transmission timing. Of all the synchronization signal transmission timings configured by the network-side device, the network-side device will definitely send a synchronization signal only during 1 / X of these timings. These synchronization signals can be used to ensure the accuracy of Radio Resource Management (RRM) measurements. During the remaining (X-1 / X) transmission timings, the network-side device conditionally determines whether to send a synchronization signal to ensure synchronization performance. It is also possible that the terminal implementation will perform RRM measurements based on the synchronization signals during the remaining (X-1 / X) transmission timings. This embodiment ensures both measurement and synchronization accuracy while reducing unnecessary overhead.

[0075] In this embodiment, the first signal is LP-SS for LP-WUR synchronization, and the second signal is LP-WUS. Specifically, compared to periodic LP-SS, when the first or second condition is met, the terminal assumes that LP-SS exists before the LP-WUS listening time, which can reduce the residual time-frequency offset after LP-SS synchronization and improve the receiving performance of LP-WUS; and compared to non-periodic LP-SS, when the first or second condition is met, the terminal assumes that LP-SS exists before the LP-WUS listening time, which can reduce the transmission density of LP-SS, and reduce the overhead of LP-SS while meeting the synchronization requirements corresponding to LP-WUS listening.

[0076] In some embodiments, the first signal corresponding to the first condition is a synchronization signal transmitted on demand, and the third signal corresponding to the first condition is a synchronization signal transmitted periodically.

[0077] In this application embodiment, an LP-WUS occasion (LO) is defined for monitoring LP-WUS, wherein each LO contains one or more LP-WUS monitoring occasions (MO), and the terminal can monitor LP-WUS in each LP-WUS MO.

[0078] For example, an LO contains M*K LP-WUS MOs, where M is the total number of beams suitable for LP-WUS transmission, and K is the number of LP-WUS MOs corresponding to the same beam. Similarly, an LP-SS can also contain M*K LP-SS times, in a typical scenario where K=1. In the following embodiments, unless otherwise specified, LP-WUS and LP-SS are described in terms of a single beam, but this can be extended to the case of multiple beams.

[0079] In this embodiment, UEs monitoring the same paging occasion (PO) can be divided into multiple subgroups. LP-WUS can provide a wake-up indication for each subgroup. In one implementation, UEs monitoring the same PO monitor the same LO; in another implementation, UEs monitoring different POs monitor the same LO. For example, one LP-WUS can be used to wake up UEs in one or more subgroups of multiple POs. Alternatively, UEs monitoring the same PO can be divided into multiple subgroup sets, and UEs in the same subgroup set monitor the same LO. For ease of description, the example of UEs monitoring the same PO monitoring the same LO is used, but this embodiment is applicable to all of the above methods.

[0080] In the embodiments of this application, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain, thereby allowing for flexible design of the transmission timing of the first signal. Since the first signal can provide a synchronization reference for the reception of at least two second signals, it is possible that the first signal is continuous in the time domain with the first of the at least two second signals, but discontinuous in the time domain with the other few second signals.

[0081] For example, the transmission timing of some or all of the first signals configured on the network side is not continuous with the listening timing of the second signal, or the transmission timing of some or all of the first signals configured on the network side is continuous with the listening timing of the second signal.

[0082] For example, the first signal and the second signal can be continuous in the time domain, reducing additional time or frequency errors introduced by time or frequency drift. For example, the first signal and the second signal can be discontinuous in the time domain, allowing the network to use resources more flexibly. For instance, other downlink signals, such as SSBs, can be transmitted during the interval between the first signal and the second signal.

[0083] In some embodiments, the first condition may be agreed upon by a protocol, or the first condition may be configured by the network side; and / or, the second condition may be agreed upon by a protocol, or the second condition may be configured by the network side.

[0084] In some embodiments, the first condition includes, but is not limited to, at least one of the following:

[0085] The time interval between the transmission timing of the first signal and the most recent third signal used for synchronization (also referred to as the transmission timing of the third signal) before the transmission timing of the first signal is greater than or equal to the first time threshold.

[0086] The time interval between the target listening time and the most recent third signal used for synchronization (also known as the transmission time of the third signal) before the target listening time is greater than or equal to the second time threshold.

[0087] The target monitoring timing is located within the i-th first time window among N first time windows, wherein the N first time windows are located between two adjacent third signals used for synchronization (also referred to as the transmission timing of the third signal), and N and i are both positive integers, and 1 < i ≤ N;

[0088] After the transmission timing of the first signal, there is at least one configured listening timing of the second signal within a second time window associated with the transmission timing of the first signal;

[0089] The time interval between the transmission timing of the first signal and the listening timing of at least one configured second signal after the transmission timing of the first signal is less than or equal to a third time threshold;

[0090] The transmission timing of the first signal is the most recent transmission timing of the first signal before the target monitoring timing;

[0091] The interval between the transmission timing of the first signal and the target listening timing is less than or equal to a third time threshold;

[0092] or,

[0093] The second condition includes, but is not limited to, at least one of the following:

[0094] The network side configures the transmission timing of the first signal;

[0095] The transmission timing of the first signal is a first type of transmission timing, wherein the interval between two adjacent first type of transmission timings is an integer multiple of the configuration period of the transmission timing of the first signal.

[0096] In this embodiment, if the time interval between the transmission timing of the first signal and the most recent third signal used for synchronization before the transmission timing of the first signal is greater than or equal to a first time threshold, the terminal assumes that the first signal existed before the target listening time. If the time interval between the transmission timing of the first signal and the most recent third signal used for synchronization before the transmission timing of the first signal is less than the first time threshold, synchronization can be performed based on the most recent third signal used for synchronization before the transmission timing of the first signal, and it is not necessary to send the first signal at the transmission timing of the first signal.

[0097] In this embodiment, if the time interval between the target listening time and the most recent third signal used for synchronization before the target listening time is greater than or equal to the second time threshold, the terminal assumes that a first signal existed before the target listening time. If the time interval between the target listening time and the most recent third signal used for synchronization before the target listening time is less than the second time threshold, synchronization can be performed based on the most recent third signal used for synchronization before the target listening time; it is not necessary to send the first signal during the transmission of the first signal before the target listening time.

[0098] In this embodiment, when the target listening time falls within the i-th first time window out of N first time windows, the terminal assumes that a first signal existed before the target listening time. When the target listening time falls within the first first time window out of N first time windows, synchronization can be performed based on the most recent third signal used for synchronization before the target listening time; it is not necessary to send the first signal during the transmission of the first signal before the target listening time.

[0099] In this embodiment, if at least one configured second signal monitoring opportunity exists within the second time window associated with the first signal transmission opportunity after the first signal transmission opportunity, the terminal assumes that the first signal exists before the target monitoring opportunity (e.g., the target monitoring opportunity is the monitoring opportunity corresponding to the terminal among at least one configured second signal monitoring opportunity). If no configured second signal monitoring opportunity exists within the second time window associated with the first signal transmission opportunity after the first signal transmission opportunity, it is unnecessary to send the first signal during the first signal transmission opportunity before the target monitoring opportunity.

[0100] In this embodiment, when the time interval between the transmission timing of the first signal and the listening timing of at least one configured second signal following the transmission timing of the first signal is less than or equal to a third time threshold, the terminal assumes that a first signal exists before the target listening timing (e.g., the target listening timing is the listening timing corresponding to the terminal among the listening timings of at least one configured second signal). When the time interval between the transmission timing of the first signal and the listening timing of at least one configured second signal following the transmission timing of the first signal is greater than the third time threshold, synchronization based on the first signal transmitted at the transmission timing of the first signal being the listening timing of at least one configured second signal following the transmission timing of the first signal cannot be performed, or the synchronization effect based on the first signal transmitted at the transmission timing of the first signal being the listening timing of at least one configured second signal following the transmission timing of the first signal is poor.

[0101] In this embodiment, if the transmission timing of the first signal is the most recent transmission timing of the first signal before the target listening timing, the terminal assumes that the first signal exists at the transmission timing of the first signal.

[0102] In this embodiment, when the interval between the transmission timing of the first signal and the target monitoring timing is less than or equal to a third time threshold, the terminal assumes that the first signal exists at the transmission timing of the first signal. When the interval between the transmission timing of the first signal and the target monitoring timing is greater than the third time threshold, it is impossible to synchronize the target monitoring timing based on the first signal transmitted at the transmission timing of the first signal, or the synchronization effect based on the first signal transmitted at the transmission timing of the first signal for the target monitoring timing is poor.

[0103] In this embodiment, when the transmission timing of the first signal is configured on the network side, the terminal assumes that the first signal exists before the target eavesdropping time. That is, the first signal is sent at all configured transmission times of the first signal.

[0104] In this embodiment, when the transmission timing of the first signal is a first type of transmission timing, the terminal assumes that the first signal exists before the target monitoring timing. That is, the first signal is transmitted at all first type of transmission timings.

[0105] In some embodiments, the third signal may be an LP-SS for LP-WUR synchronization. It should be noted that the third signal may also be other synchronization signals, and this application embodiment is not limited to this.

[0106] Optionally, the N first time windows can be time windows that are evenly distributed among adjacent third signals used for synchronization.

[0107] In some embodiments, the length T1 of the first time window satisfies one of the following: T1 = T / N; T1 = (T – T3) / N;

[0108] T1 is configured by the network side;

[0109] Where T is the period of the transmission timing of the third signal, and T3 is the time domain length occupied by one of the third signals.

[0110] In some embodiments, the time-domain resources between the transmission times of two adjacent third signals are divided into N first time windows. The length of each first time window is T1 = T / N. Assuming the third signal is LP-SS, the time-domain resources between two adjacent LP-SS signals are divided into N = 4 equally spaced first time windows, each with a length of 80ms. Alternatively, T1 = (T-T3) / N, where T3 is the duration of the third signal, or T1 is configured by the network. If T or (T-T3) is not an integer multiple of N, then within the N first time windows, one first time window has a shorter length. For example, if the lengths of the other N-1 first time windows are T1, then the length of the last first time window is T1-(N-1)*T. Accordingly, each first time window corresponds to the transmission time of each first signal. For example, the second first time window corresponds to the transmission time of the first first signal, the third first time window corresponds to the transmission time of the second first signal, and the fourth first time window corresponds to the transmission time of the third first signal. Alternatively, the time-domain resources between the transmission times of two adjacent first signals constitute a first time window.

[0111] In some embodiments, the third time threshold may be the period of the transmission timing of the first signal.

[0112] In some embodiments, the first time threshold may be agreed upon by a protocol, or the first time threshold may be configured by the network side; and / or, the second time threshold may be agreed upon by a protocol, or the second time threshold may be configured by the network side; and / or, the third time threshold may be agreed upon by a protocol, or the third time threshold may be configured by the network side.

[0113] In some embodiments, the wireless communication method 200 further includes:

[0114] If the first condition is not met, the terminal assumes that the first signal did not exist before the target listening opportunity; or,

[0115] If the first and second conditions are not met, the terminal assumes that the first signal did not exist before the target listening time.

[0116] In some embodiments, the transmission timing of the first signal configured on the network side (such as periodic transmission timing of the first signal) may include a first type of transmission timing and a second type of transmission timing. The network-side device transmits the first signal in each first type of transmission timing, and whether the network-side device transmits the first signal in the second type of transmission timing is determined based on given conditions. The second type of transmission timing refers to any transmission timing of the first signal configured on the network side other than the first type of transmission timing.

[0117] In some embodiments, the position of the first type of transmission opportunity is k1*L*T2+offset1, or the position of the first type of transmission opportunity is (k1*L+k2)*T2+offset1;

[0118] Where k1 = 0, 1, ..., L, k2, T2 and offset1 are all positive integers, and k2 < L;

[0119] Wherein, T2 represents the configuration period for the transmission timing of the first signal.

[0120] It should be noted that the first type of transmission timing can also be the transmission timing of the first signal marked in the periodic transmission timing of the first signal.

[0121] Specifically, for example, the interval between adjacent first - type transmission opportunities is an integer multiple of T2, such as L*T2, where L is a positive integer. For example, T2 = 80ms and L = 4. Then, the interval between adjacent first - type transmission opportunities is 320ms. The position of the first - type transmission opportunity can be determined by k1*L*T2 + offset1, where k1 = 0, 1, …, for example, the transmission opportunity positions of the 1st, 5th, 9th … first signals in a period of T2 are the first - type transmission opportunities. Or, it is determined by (k1*L + k2)*T2 + offset1, where k2 < L and the value of k2 is determined by network configuration or predefined rules.

[0122] Optionally, the terminal can determine the position of the first - type transmission opportunity according to the period T2, offset offset1, and L configured by the network side; or the terminal can determine the position of the first - type transmission opportunity according to the period T2, offset offset1, L, and k2 configured by the network side. Taking the first signal as LP - SS for example, the terminal can consider that there is LP - SS in the first - type transmission opportunity.

[0123] Optionally, the first - type transmission opportunity is used for RRM measurement.

[0124] In some embodiments, the second time window associated with the transmission opportunity of the first signal is the time - domain resource between the transmission opportunity of the first signal and the transmission opportunity of the next first signal. Optionally, the transmission opportunity of the first signal is a second - type transmission opportunity, and the transmission opportunity of the next first signal is a first - type transmission opportunity or a second - type transmission opportunity.

[0125] In some embodiments, the second time window associated with the transmission opportunity of the first signal is the first time window where the end position of the transmission opportunity of the first signal is located among the N first time windows, or the second time window associated with the transmission opportunity of the first signal is the first time window after the transmission opportunity of the first signal among the N first time windows.

[0126] In some embodiments, the listening timing of at least one configured second signal after the transmission timing of the first signal includes the listening timing of the second signal of the terminal and the listening timing of the second signals of other terminals. Optionally, the listening timing of the second signal can be configured via cell-specific signaling or user-specific signaling. For example, by broadcasting the offset of the listening timing of the second signal relative to the paging occasion (PO) or paging frame (PF) through system information, each terminal determines its own listening timing of the second signal based on its own PO or PF and the offset provided by the system information. Furthermore, since the configuration information of PO or PF is also broadcast through system information, the terminal can also determine the PO or PF of other terminals based on the system information, thereby determining the PO or PF of other terminals and the listening timing of their second signals. That is, the terminal can determine the configured listening timing of the second signal, which may include the listening timing of its own second signal and the listening timing of the second signals of other terminals.

[0127] In some embodiments, the transmission timing of the first signal corresponding to the first condition is a second type of transmission timing.

[0128] In this embodiment, when the transmission timing of the first signal is a second type of transmission timing, the terminal assumes that the first signal existed before the target listening timing; when the transmission timing of the first signal is a second type of transmission timing, if the first condition is met, the terminal assumes that the first signal existed before the target listening timing; if the first condition is not met, the terminal assumes that the first signal did not exist before the target listening timing.

[0129] In some embodiments, the timing of the transmission of the first signal is determined based on at least one of the following:

[0130] The period of the transmission timing of the first signal;

[0131] The offset corresponding to the transmission timing of the first signal;

[0132] The time-domain location of the third signal used for synchronization;

[0133] The time-domain position of the most recent third signal used for synchronization preceding the second signal;

[0134] The time-domain location of the second signal.

[0135] In this embodiment, the terminal can determine the transmission timing of the first signal based on at least one of the following: the period of the transmission timing of the first signal, the offset corresponding to the transmission timing of the first signal, the time-domain position of the third signal used for synchronization, the time-domain position of the most recent third signal used for synchronization preceding the second signal, and the time-domain position of the second signal. This allows for accurate acquisition of the transmission timing of the first signal.

[0136] For example, after the terminal acquires the period of the transmission timing of the first signal, it determines the transmission timing of the first signal.

[0137] For example, after obtaining the time-domain position of the third signal used for synchronization, the terminal can determine the transmission timing of the first signal based on the offset corresponding to the transmission timing of the first signal (such as the offset of the transmission timing of the first signal relative to the time-domain position of the third signal used for synchronization) and the time-domain position of the third signal used for synchronization.

[0138] For example, after acquiring the time-domain position of the most recent third signal used for synchronization before the second signal, the terminal can determine the transmission timing of the first signal based on the offset corresponding to the transmission timing of the first signal (such as the offset of the transmission timing of the first signal relative to the time-domain position of the third signal used for synchronization) and the time-domain position of the most recent third signal used for synchronization before the second signal.

[0139] For example, after obtaining the time domain position of the second signal, the terminal can determine the transmission timing of the first signal based on the offset corresponding to the transmission timing of the first signal (such as the offset of the transmission timing of the first signal relative to the time domain position of the second signal) and the time domain position of the second signal.

[0140] In some embodiments, the timing of the transmission of the first signal is determined based on the time-domain resources of the third signal. For example, W-1 transmission opportunities of the first signal are uniformly inserted between two adjacent third signals. The transmission opportunity of the first signal can be expressed as x*T+y*T / W+offset, where x=0,1….,y=1,2…N-1.

[0141] In some embodiments, the wireless communication method 200 further includes:

[0142] The terminal assumes that at least one of the first signals and / or at least one third signal for synchronization exist within a first duration prior to the target listening time.

[0143] In this embodiment, the terminal assumes that at least one first signal and / or at least one third signal for synchronization exist within a first duration before the target listening time, thereby ensuring synchronization before the second signal.

[0144] In some embodiments, if the first condition is not met, or if both the first and second conditions are not met, the terminal assumes that at least one first signal and / or at least one third signal existed during the first duration prior to the target eavesdropping time.

[0145] Specifically, based on the first or second condition, the terminal assumes that there is no first signal before the target listening time. In this case, the terminal assumes that there is at least one first signal and / or at least one third signal for synchronization during the first time period before the target listening time, thereby ensuring synchronization before the second signal.

[0146] Optionally, the first duration is agreed upon by the protocol, or the first duration is configured by the network side.

[0147] In some embodiments, the first signal, the second signal, and the third signal for synchronization correspond to the same spatial characteristics; or, the first signal and the second signal correspond to the same spatial characteristics.

[0148] In some embodiments, it is not excluded that even if the first condition or the second condition is met, the terminal assumes that the first signal does not exist before the target listening time, provided that other special conditions are met. For example, when the transmission time of the first signal collides with a Time Division Duplex (TDD) uplink symbol, the terminal assumes that the first signal does not exist before the target listening time, even if the first condition or the second condition is met. Accordingly, the network-side device also does not transmit the first signal at the transmission time of the first signal.

[0149] Therefore, in this embodiment, when the first condition or the second condition is met, the terminal assumes that a first signal exists before the target listening time; wherein, the first signal is used for synchronization, the target listening time is used for the terminal to listen to the second signal, and the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain. Introducing the first condition or the second condition can reduce the overhead of the synchronization signal while satisfying the synchronization requirements corresponding to the listening of the second signal. For example, the first signal is LP-SS for LP-WUR synchronization, and the second signal is LP-WUS; specifically, compared to periodic LP-SS, when the first condition or the second condition is met, the terminal assumes that LP-SS exists before the listening time of LP-WUS, which can reduce the residual time-frequency offset after LP-SS synchronization and improve the receiving performance of LP-WUS; and compared to non-periodic LP-SS, when the first condition or the second condition is met, the terminal assumes that LP-SS exists before the listening time of LP-WUS, which can reduce the transmission density of LP-SS, and reduce the overhead of LP-SS while satisfying the synchronization requirements corresponding to the listening of LP-WUS.

[0150] The terminal-side embodiments of this application have been described in detail above with reference to Figure 3. The network-side embodiments of this application have been described in detail below with reference to Figure 4. It should be understood that the network-side embodiments correspond to the terminal-side embodiments, and similar descriptions can be referred to the terminal-side embodiments.

[0151] Figure 4 is a schematic flowchart of a wireless communication method 300 according to an embodiment of this application. As shown in Figure 4, the wireless communication method 300 may include at least some of the following:

[0152] S310, if the third or fourth condition is met, the network-side device sends a first signal for synchronization; wherein the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain.

[0153] It should be understood that Figure 4 illustrates the steps or operations of the wireless communication method 300, but these steps or operations are merely examples, and other operations or variations of the operations shown in Figure 4 may also be performed in this application.

[0154] In this embodiment, the first signal can be a synchronization signal transmitted on demand. To improve resource efficiency, the network-side device can send the first signal on demand. For example, the network-side device can configure the transmission timing of the first signal, but whether the first signal is sent during the transmission timing can be determined by the network-side device based on a third or fourth condition. Accordingly, if the first or second condition is met, the terminal assumes that the first signal exists before the target listening time. Specifically, for the terminal, whether the first signal exists during a transmission timing can be determined based on the first or second condition; for the network-side device, whether the first signal is sent during a transmission timing can be determined based on the third or fourth condition. For example, if the first or second condition is met, the terminal assumes that the first signal exists before the target listening time; if the first or second condition is not met, the terminal assumes that the first signal does not exist before the target listening time. For another example, if the third or fourth condition is met, the network-side device can send the first signal; if the third or fourth condition is not met, the network-side device does not send the first signal.

[0155] The monitoring timing described in this application embodiment can also be referred to as or replaced by the transmission timing. The monitoring timing corresponds to the receiving end, and the transmission timing corresponds to the sending end.

[0156] In this embodiment, when a third or fourth condition is met, the network-side device sends a first signal for synchronization; wherein the first signal is used for synchronization, and the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain. Introducing the third or fourth condition can reduce the overhead of the synchronization signal while satisfying the synchronization requirements corresponding to the monitoring of the second signal.

[0157] The embodiments of this application are applicable to at least one RRC state, such as the RRC idle state or inactive state, and also the RRC connected state.

[0158] In some embodiments, the second signal is used to wake up the terminal. Optionally, the second signal is LP-WUS. It should be noted that the second signal can also be other downlink signals, and this application embodiment is not limited to this.

[0159] The embodiments of this application are applicable to scenarios where LP-WUS wake-up terminals receive paging messages, scenarios where LP-WUS wake-up terminals monitor PDCCH, scenarios where LP-WUS wake-up terminals enable DRX, and other scenarios where LP-WUS wake-up terminals are used.

[0160] The embodiments of this application are also applicable to other scenarios that require synchronization or measurement assisted by non-periodic signals, and may be independent of LP-WUS. The embodiments of this application are not limited in this respect.

[0161] In some embodiments, the first signal may be an LP-SS for LP-WUR synchronization. It should be noted that the first signal may also be other synchronization signals, and this application embodiment is not limited to this.

[0162] In this embodiment, the network-side device can be configured to transmit synchronization signals at either aperiodic or periodic times. Of all the synchronization signal transmission times configured by the network-side device, it will definitely send a synchronization signal only during 1 / X of these transmission times. These synchronization signals are used to ensure the accuracy of RRM measurements. During the remaining (X-1 / X) transmission times, the network-side device determines whether to send a synchronization signal based on conditions to ensure synchronization performance. It is also possible that the terminal implementation will perform RRM measurements based on the synchronization signals during the remaining (X-1 / X) transmission times. This embodiment ensures both measurement and synchronization accuracy while reducing unnecessary overhead.

[0163] In this embodiment, the first signal is LP-SS for LP-WUR synchronization, and the second signal is LP-WUS. Specifically, compared to periodic LP-SS, when the third or fourth condition is met, the network-side device sends LP-SS for synchronization, which can reduce the residual time-frequency offset after LP-SS synchronization and improve the reception performance of LP-WUS; and compared to non-periodic LP-SS, when the third or fourth condition is met, the network-side device sends LP-SS for synchronization, which can reduce the transmission density of LP-SS, and can reduce the overhead of LP-SS while meeting the synchronization requirements corresponding to LP-WUS monitoring.

[0164] In some embodiments, the first signal corresponding to the third condition is a synchronization signal transmitted on demand, and the third signal corresponding to the third condition is a synchronization signal transmitted periodically.

[0165] In this application embodiment, an LP-WUS occasion (LO) is defined for monitoring LP-WUS, wherein each LO contains one or more LP-WUS monitoring occasions (MO), and the terminal can monitor LP-WUS in each LP-WUS MO.

[0166] For example, an LO contains M*K LP-WUS MOs, where M is the total number of beams suitable for LP-WUS transmission, and K is the number of LP-WUS MOs corresponding to the same beam. Similarly, an LP-SS can also contain M*K LP-SS times, in a typical scenario where K=1. In the following embodiments, unless otherwise specified, LP-WUS and LP-SS are described in terms of a single beam, but this can be extended to the case of multiple beams.

[0167] In this embodiment, UEs monitoring the same paging occasion (PO) can be divided into multiple subgroups. LP-WUS can provide a wake-up indication for each subgroup. In one implementation, UEs monitoring the same PO monitor the same LO; in another implementation, UEs monitoring different POs monitor the same LO. For example, one LP-WUS can be used to wake up UEs in one or more subgroups of multiple POs. Alternatively, UEs monitoring the same PO can be divided into multiple subgroup sets, and UEs in the same subgroup set monitor the same LO. For ease of description, the example of UEs monitoring the same PO monitoring the same LO is used, but this embodiment is applicable to all of the above methods.

[0168] In the embodiments of this application, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain, thereby allowing for flexible design of the transmission timing of the first signal. Since the first signal can provide a synchronization reference for the reception of at least two second signals, it is possible that the first signal is continuous in the time domain with the first of the at least two second signals, but discontinuous in the time domain with the other few second signals.

[0169] For example, the transmission timing of some or all of the first signals configured on the network side is not continuous with the listening timing of the second signal, or the transmission timing of some or all of the first signals configured on the network side is continuous with the listening timing of the second signal.

[0170] For example, the first signal and the second signal can be continuous in the time domain, reducing additional time or frequency errors introduced by time or frequency drift. For example, the first signal and the second signal can be discontinuous in the time domain, allowing the network to use resources more flexibly. For instance, other downlink signals, such as SSBs, can be transmitted during the interval between the first signal and the second signal.

[0171] In some embodiments, the third condition may be agreed upon by a protocol, or the third condition may be configured by the network side; and / or, the fourth condition may be agreed upon by a protocol, or the fourth condition may be configured by the network side.

[0172] In some embodiments, the third condition includes, but is not limited to, at least one of the following:

[0173] The time interval between the transmission timing of the first signal and the most recent third signal used for synchronization (also referred to as the transmission timing of the third signal) before the transmission timing of the first signal is greater than or equal to the first time threshold.

[0174] There is at least one listening opportunity for a configured second signal after the transmission opportunity of the first signal, and the time interval between the listening opportunity of the second signal and the transmission opportunity of the first signal is less than or equal to a third time threshold.

[0175] There is at least one listening time for a configured second signal after the transmission time of the first signal, and the time interval between the listening time of the second signal and the transmission time of the first signal is less than or equal to a third time threshold, and the time interval between the listening time of the second signal and the most recent third signal used for synchronization (also referred to as the transmission time of the third signal) before the listening time of the second signal is greater than or equal to the second time threshold.

[0176] There is at least one listening time for a configured second signal after the transmission time of the first signal, and the time interval between the listening time of the second signal and the transmission time of the first signal is less than or equal to a third time threshold, and the time interval between the transmission time of the first signal and the most recent third signal used for synchronization (also referred to as the transmission time of the third signal) before the transmission time of the first signal is greater than or equal to a first time threshold.

[0177] After the transmission timing of the first signal, there is at least one configured listening timing of the second signal within a second time window associated with the transmission timing of the first signal;

[0178] There is at least one predicted listening opportunity for a second signal to be sent after the transmission opportunity of the first signal, and the time interval between the predicted listening opportunity for the second signal to be sent and the transmission opportunity of the first signal is less than or equal to a fourth time threshold.

[0179] There is at least one predicted listening time for a second signal to be sent after the transmission time of the first signal, and the time interval between the predicted listening time for the second signal to be sent and the transmission time of the first signal is less than or equal to a fourth time threshold, and the time interval between the predicted listening time for the second signal to be sent and the most recent third signal for synchronization (also referred to as the transmission time of the third signal) before the predicted listening time for the second signal to be sent is greater than or equal to a fifth time threshold.

[0180] There is at least one predicted listening time for a second signal to be sent after the transmission time of the first signal, and the time interval between the listening time of the predicted second signal to be sent and the transmission time of the first signal is less than or equal to a fourth time threshold, and the time interval between the transmission time of the first signal and the most recent third signal for synchronization (also referred to as the transmission time of the third signal) before the transmission time of the first signal is greater than or equal to a first time threshold.

[0181] After the transmission of the first signal, there is at least one predicted listening opportunity for the second signal to be transmitted within a second time window associated with the transmission of the first signal;

[0182] or,

[0183] The fourth condition includes, but is not limited to, at least one of the following:

[0184] The transmission timing of the first signal has been configured;

[0185] The transmission timing of the first signal is a first type of transmission timing, wherein the interval between two adjacent first type of transmission timings is an integer multiple of the configuration period of the transmission timing of the first signal.

[0186] In this embodiment, if the time interval between the transmission timing of the first signal and the most recent third signal used for synchronization before the transmission timing of the first signal is greater than or equal to a first time threshold, the network-side device sends the first signal. If the time interval between the transmission timing of the first signal and the most recent third signal used for synchronization before the transmission timing of the first signal is less than the first time threshold, synchronization can be performed based on the most recent third signal used for synchronization before the transmission timing of the first signal, and it is not necessary to send the first signal at the transmission timing of the first signal.

[0187] In this embodiment, if the time interval between the target listening time and the most recent third signal used for synchronization before the target listening time is greater than or equal to the second time threshold, the terminal assumes that a first signal existed before the target listening time. If the time interval between the target listening time and the most recent third signal used for synchronization before the target listening time is less than the second time threshold, synchronization can be performed based on the most recent third signal used for synchronization before the target listening time; it is not necessary to send the first signal during the transmission of the first signal before the target listening time.

[0188] In this embodiment, if at least one configured second signal monitoring opportunity exists after the transmission opportunity of the first signal, and the time interval between the monitoring opportunity of the second signal and the transmission opportunity of the first signal is less than or equal to a third time threshold, the network-side device sends the first signal. If at least one configured second signal monitoring opportunity exists after the transmission opportunity of the first signal, and the time interval between the monitoring opportunity of the second signal and the transmission opportunity of the first signal is greater than the third time threshold, synchronization based on the first signal transmitted at the transmission opportunity of the first signal being at least one configured second signal monitoring opportunity after the transmission opportunity of the first signal cannot be performed, or the synchronization effect based on the first signal transmitted at the transmission opportunity of the first signal being at least one configured second signal monitoring opportunity after the transmission opportunity of the first signal is poor.

[0189] In this embodiment, if at least one configured second signal monitoring opportunity exists after the transmission opportunity of the first signal, and the time interval between the monitoring opportunity of the second signal and the transmission opportunity of the first signal is less than or equal to a third time threshold, and the time interval between the monitoring opportunity of the second signal and the most recent third signal used for synchronization (also referred to as the transmission opportunity of the third signal) preceding the monitoring opportunity of the second signal is greater than or equal to the second time threshold, the network-side device sends the first signal. If at least one configured second signal monitoring opportunity exists after the transmission opportunity of the first signal, and the time interval between the monitoring opportunity of the second signal and the transmission opportunity of the first signal is greater than the third time threshold, synchronization cannot be performed based on the first signal transmitted at the transmission opportunity of the first signal as the monitoring opportunity of at least one configured second signal after the transmission opportunity of the first signal, or the synchronization effect based on the first signal transmitted at the transmission opportunity of the first signal as the monitoring opportunity of at least one configured second signal after the transmission opportunity of the first signal is poor. If there is at least one configured second signal listening time after the first signal transmission time, and the time interval between the second signal listening time and the first signal transmission time is less than or equal to a third time threshold, and the time interval between the second signal listening time and the most recent third signal used for synchronization (also referred to as the third signal transmission time) before the second signal listening time is less than the second time threshold, synchronization can be performed based on the most recent third signal used for synchronization before the second signal listening time, and it is not necessary to send the first signal during the first signal transmission time before the second signal listening time.

[0190] In this embodiment, if at least one configured second signal monitoring opportunity exists after the transmission opportunity of the first signal, and the time interval between the monitoring opportunity of the second signal and the transmission opportunity of the first signal is less than or equal to a third time threshold, and the time interval between the transmission opportunity of the first signal and the most recent third signal used for synchronization (also referred to as the transmission opportunity of the third signal) before the transmission opportunity of the first signal is greater than or equal to the first time threshold, the network-side device sends the first signal. If at least one configured second signal monitoring opportunity exists after the transmission opportunity of the first signal, and the time interval between the monitoring opportunity of the second signal and the transmission opportunity of the first signal is greater than the third time threshold, synchronization cannot be performed based on the first signal transmitted at the transmission opportunity of the first signal as the monitoring opportunity of at least one configured second signal after the transmission opportunity of the first signal, or the synchronization effect based on the first signal transmitted at the transmission opportunity of the first signal as the monitoring opportunity of at least one configured second signal after the transmission opportunity of the first signal is poor. If there is at least one configured second signal listening time after the transmission time of the first signal, and the time interval between the second signal listening time and the transmission time of the first signal is less than or equal to a third time threshold, and the time interval between the transmission time of the first signal and the most recent third signal used for synchronization (also referred to as the transmission time of the third signal) before the transmission time of the first signal is less than the first time threshold, synchronization can be performed based on the most recent third signal used for synchronization before the transmission time of the first signal, and it is not necessary to send the first signal during the transmission time of the first signal.

[0191] In this embodiment, if there is at least one configured second signal listening time within a second time window associated with the transmission time of the first signal after the transmission time of the first signal, the network-side device sends the first signal.

[0192] In this embodiment, if there is at least one predicted listening opportunity for a second signal to be sent after the transmission opportunity of the first signal, and the time interval between the predicted listening opportunity for the second signal to be sent and the transmission opportunity of the first signal is less than or equal to a fourth time threshold, the network-side device sends the first signal. If there is at least one predicted listening opportunity for a second signal to be sent after the transmission opportunity of the first signal, and the time interval between the predicted listening opportunity for the second signal to be sent and the transmission opportunity of the first signal is greater than the fourth time threshold, synchronization cannot be performed based on the first signal transmitted at the transmission opportunity of the first signal being at least one predicted listening opportunity for a second signal to be sent after the transmission opportunity of the first signal, or the synchronization effect based on the first signal transmitted at the transmission opportunity of the first signal being at least one predicted listening opportunity for a second signal to be sent after the transmission opportunity of the first signal is poor.

[0193] In this embodiment, if there is at least one predicted listening opportunity for a second signal to be sent after the transmission opportunity of the first signal, and the time interval between the predicted listening opportunity for the second signal to be sent and the transmission opportunity of the first signal is less than or equal to a fourth time threshold, and the time interval between the predicted listening opportunity for the second signal to be sent and the most recent third signal used for synchronization (also referred to as the transmission opportunity of the third signal) preceding the predicted listening opportunity for the second signal to be sent is greater than or equal to a fifth time threshold, the network-side device sends the first signal. If there is at least one predicted listening opportunity for a second signal to be sent after the transmission opportunity of the first signal, and the time interval between the predicted listening opportunity for the second signal to be sent and the transmission opportunity of the first signal is less than or equal to a fourth time threshold, and the time interval between the predicted listening opportunity for the second signal to be sent and the most recent third signal used for synchronization (also referred to as the transmission opportunity of the third signal) preceding the predicted listening opportunity for the second signal to be sent is less than a fifth time threshold, synchronization can be performed based on the most recent third signal used for synchronization preceding the predicted listening opportunity for the second signal to be sent; it is not necessary to send the first signal during the transmission opportunity of the first signal.

[0194] In this embodiment, if there is at least one predicted listening opportunity for a second signal to be sent after the transmission opportunity of the first signal, and the time interval between the predicted listening opportunity for the second signal to be sent and the transmission opportunity of the first signal is less than or equal to a fourth time threshold, and the time interval between the transmission opportunity of the first signal and the most recent third signal used for synchronization (also referred to as the transmission opportunity of the third signal) before the transmission opportunity of the first signal is greater than or equal to the first time threshold, the network-side device sends the first signal. If there is at least one predicted listening opportunity for a second signal to be sent after the transmission opportunity of the first signal, and the time interval between the predicted listening opportunity for the second signal to be sent and the transmission opportunity of the first signal is less than or equal to the fourth time threshold, and the time interval between the transmission opportunity of the first signal and the most recent third signal used for synchronization (also referred to as the transmission opportunity of the third signal) before the transmission opportunity of the first signal is less than the first time threshold, synchronization can be performed based on the most recent third signal used for synchronization before the transmission opportunity of the first signal; it is not necessary to send the first signal at the transmission opportunity of the first signal.

[0195] In this embodiment, when the network side configures the transmission timing of the first signal, the network side device sends the first signal at each of the configured transmission timings.

[0196] In this embodiment, when the transmission timing of the first signal is a first type of transmission timing, the network-side device sends the first signal at all times during the first type of transmission timing.

[0197] In some embodiments, the third signal may be an LP-SS for LP-WUR synchronization. It should be noted that the third signal may also be other synchronization signals, and this application embodiment is not limited to this.

[0198] In some embodiments, the second time window associated with the transmission timing of the first signal is the time-domain resource between the transmission timing of the first signal and the transmission timing of the next first signal; or, the second time window associated with the transmission timing of the first signal is the first time window where the end position of the transmission timing of the first signal is located among the N first time windows; or, the second time window associated with the transmission timing of the first signal is the first first time window after the transmission timing of the first signal among the N first time windows.

[0199] Optionally, the N first time windows can be time windows that are evenly distributed among adjacent third signals used for synchronization.

[0200] In some embodiments, the length T1 of the first time window satisfies one of the following: T1 = T / N; T1 = (T – T3) / N;

[0201] T1 is configured by the network side;

[0202] Where T is the period of the transmission timing of the third signal, and T3 is the time domain length occupied by one of the third signals.

[0203] In some embodiments, the time-domain resources between the transmission times of two adjacent third signals are divided into N first time windows. The length of each first time window is T1 = T / N. Assuming the third signal is LP-SS, the time-domain resources between two adjacent LP-SS signals are divided into N = 4 equally spaced first time windows, each with a length of 80ms. Alternatively, T1 = (T-T3) / N, where T3 is the duration of the third signal, or T1 is configured by the network. If T or (T-T3) is not an integer multiple of N, then within the N first time windows, one first time window has a shorter length. For example, if the lengths of the other N-1 first time windows are T1, then the length of the last first time window is T1-(N-1)*T. Accordingly, each first time window corresponds to the transmission time of each first signal. For example, the second first time window corresponds to the transmission time of the first first signal, the third first time window corresponds to the transmission time of the second first signal, and the fourth first time window corresponds to the transmission time of the third first signal. Alternatively, the time-domain resources between the transmission times of two adjacent first signals constitute a first time window.

[0204] In some embodiments, the third time threshold may be the period of the transmission timing of the first signal.

[0205] In some embodiments, the first time threshold may be agreed upon by a protocol, or the first time threshold may be configured by the network side; and / or, the second time threshold may be agreed upon by a protocol, or the second time threshold may be configured by the network side; and / or, the third time threshold may be agreed upon by a protocol, or the third time threshold may be configured by the network side; and / or, the fourth time threshold may be agreed upon by a protocol, or the fourth time threshold may be configured by the network side; and / or, the fifth time threshold may be agreed upon by a protocol, or the fifth time threshold may be configured by the network side.

[0206] In some embodiments, the timing of listening to the at least one predicted second signal to be transmitted includes at least one of the following:

[0207] The predicted timing for listening to the second signal to be sent corresponding to the terminal;

[0208] The timing for listening to the second signal to be sent from other predicted terminals.

[0209] In some embodiments, the transmission timing of the first signal configured on the network side can be divided into a first type of transmission timing and a second type of transmission timing. The network-side device transmits the first signal in each first type of transmission timing, and whether the network-side device transmits the first signal in the second type of transmission timing is determined based on given conditions (such as a third or fourth condition).

[0210] In some embodiments, the transmission timing of the first signal corresponding to the third condition is a second type of transmission timing.

[0211] In some embodiments, the position of the first type of transmission opportunity is k1*L*T2+offset1, or the position of the first type of transmission opportunity is (k1*L+k2)*T2+offset1;

[0212] Where k1 = 0, 1, ..., L, k2, T2 and offset1 are all positive integers, and k2 < L;

[0213] Wherein, T2 represents the configuration period for the transmission timing of the first signal.

[0214] Specifically, for example, the interval between adjacent first - type transmission opportunities is an integer multiple of T2, such as L*T2, where L is a positive integer. For example, T2 = 80 ms and L = 4. Then, the interval between adjacent first - type transmission opportunities is 320 ms. The position of the first - type transmission opportunity can be determined according to k1*L*T2 + offset1, where k1 = 0, 1, …, such as the transmission opportunity positions of the 1st, 5th, 9th … first signals with a period of T2 are the first - type transmission opportunities. Or, it is determined by (k1*L + k2)*T2 + offset1, where k2 < L, and the value of k2 is determined by network configuration or predefined rules.

[0215] Optionally, the terminal can determine the position of the first - type transmission opportunity according to the period T2, offset offset1, and L configured by the network side; or, the terminal can determine the position of the first - type transmission opportunity according to the period T2, offset offset1, L, and k2 configured by the network side. Taking the first signal as LP - SS as an example, the terminal can consider that there is LP - SS in the first - type transmission opportunity.

[0216] Optionally, the first - type transmission opportunity is used for RRM measurement.

[0217] In some embodiments, at least one configured listening opportunity for the second signal after the transmission opportunity of the first signal includes the listening opportunity for the second signal of the terminal and the listening opportunity for the second signal of other terminals. Optionally, the listening opportunity for the second signal can be configured through cell - specific signaling or user - specific signaling. For example, the offset of the listening opportunity for the second signal relative to PO or PF is broadcast through system information, and each terminal determines its own listening opportunity for the second signal according to its own PO or PF and the offset provided by the system information. In addition, since the configuration information of PO or PF is also broadcast through system information, the terminal can also determine the PO or PF of other terminals according to the system information, and thus can also determine the PO or PF of other terminals and determine the listening opportunity for the second signal of other terminals. That is, the terminal can determine the configured listening opportunity for the second signal, which can include the listening opportunity for the second signal of the terminal and the listening opportunity for the second signal of other terminals.

[0218] In some embodiments, the wireless communication method 300 further includes:

[0219] In the case where the third condition is not satisfied, the network - side device does not send the first signal for synchronization; or,

[0220] In the case where the third condition and the fourth condition are not satisfied, the network - side device does not send the first signal for synchronization.

[0221] In some embodiments, the transmission opportunity of the first signal is determined based on at least one of the following:

[0222] The period of the transmission timing of the first signal;

[0223] The offset corresponding to the transmission timing of the first signal;

[0224] The time-domain location of the third signal used for synchronization;

[0225] The time-domain position of the most recent third signal used for synchronization preceding the second signal;

[0226] The time-domain location of the second signal.

[0227] In this embodiment, the terminal can determine the transmission timing of the first signal based on at least one of the following: the period of the transmission timing of the first signal, the offset corresponding to the transmission timing of the first signal, the time-domain position of the third signal used for synchronization, the time-domain position of the most recent third signal used for synchronization preceding the second signal, and the time-domain position of the second signal. This allows for accurate acquisition of the transmission timing of the first signal.

[0228] For example, after the terminal acquires the period of the transmission timing of the first signal, it determines the transmission timing of the first signal.

[0229] For example, after obtaining the time-domain position of the third signal used for synchronization, the terminal can determine the transmission timing of the first signal based on the offset corresponding to the transmission timing of the first signal (such as the offset of the transmission timing of the first signal relative to the time-domain position of the third signal used for synchronization) and the time-domain position of the third signal used for synchronization.

[0230] For example, after acquiring the time-domain position of the most recent third signal used for synchronization before the second signal, the terminal can determine the transmission timing of the first signal based on the offset corresponding to the transmission timing of the first signal (such as the offset of the transmission timing of the first signal relative to the time-domain position of the third signal used for synchronization) and the time-domain position of the most recent third signal used for synchronization before the second signal.

[0231] For example, after obtaining the time domain position of the second signal, the terminal can determine the transmission timing of the first signal based on the offset corresponding to the transmission timing of the first signal (such as the offset of the transmission timing of the first signal relative to the time domain position of the second signal) and the time domain position of the second signal.

[0232] In some embodiments, the timing of the transmission of the first signal is determined based on the time-domain resources of the third signal. For example, W-1 transmission opportunities of the first signal are uniformly inserted between two adjacent third signals. The transmission opportunity of the first signal can be expressed as x*T+y*T / W+offset, where x=0,1….,y=1,2…N-1.

[0233] In some embodiments, the first signal, the second signal, and the third signal for synchronization correspond to the same spatial characteristics; or, the first signal and the second signal correspond to the same spatial characteristics.

[0234] In some embodiments, it is not excluded that even if the first condition or the second condition is met, the terminal assumes that the first signal did not exist before the target listening time, provided that other special conditions are met. For example, when the transmission time of the first signal collides with a TDD uplink symbol, even if the first condition or the second condition is met, the terminal assumes that the first signal did not exist before the target listening time. Accordingly, the network-side device also does not transmit the first signal at the transmission time of the first signal.

[0235] Therefore, in this embodiment, when the third or fourth condition is met, the network-side device sends a first signal for synchronization; wherein the first signal is used for synchronization, and the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain. Introducing the third or fourth condition can reduce the overhead of the synchronization signal while satisfying the synchronization requirements corresponding to the monitoring of the second signal. For example, the first signal is LP-SS for LP-WUR synchronization, and the second signal is LP-WUS; specifically, compared to periodic LP-SS, when the third or fourth condition is met, the network-side device sending LP-SS for synchronization can reduce the residual time-frequency offset after LP-SS synchronization and improve the reception performance of LP-WUS; and compared to non-periodic LP-SS, when the third or fourth condition is met, the network-side device sending LP-SS for synchronization can reduce the transmission density of LP-SS, thus reducing the overhead of LP-SS while satisfying the synchronization requirements corresponding to the monitoring of LP-WUS.

[0236] The technical solution of this application is described in detail below through specific embodiments.

[0237] Example 1, taking LP-SS as the first signal, LP-WUS as the second signal, and LP-SS as the third signal as an example.

[0238] Specifically, in Example 1, it is assumed that the network side sends a third signal LP-SS, which is a periodic LP-SS with a period of T = 320ms and an offset of X1 ms. To ensure the synchronization accuracy of the second signal LP-WUS within 320ms, the network side can configure another set of transmission timings for the first signal LP-SS. The third signal LP-SS can be referred to as a first-type synchronization signal, and the first signal LP-SS can be referred to as a second-type synchronization signal.

[0239] According to one implementation, the timing of the transmission of the first signal LP-SS is determined based on the time-domain resources of the third signal LP-SS. For example, N-1 transmission opportunities of the first signal LP-SS are evenly inserted between two adjacent third signals LP-SS. The transmission opportunity of the first signal can be expressed as x*T+y*T / N+offset, where x=0,1….,y=1,2…N-1.

[0240] The time-domain resources between the transmission times of two adjacent third signals LP-SS are divided into N first time windows. The length of each first time window is T1 = T / N. For example, the time-domain resources between two adjacent third signals LP-SS are divided into N = 4 equally spaced first time windows, each with a length of 80ms. Alternatively, T1 = (T-T3) / N, where T3 is the duration of the third signal LP-SS, or T1 is configured by the network. If T or (T-T3) is not an integer multiple of N, then within the N first time windows, one first time window has a shorter length. For example, if the lengths of the other N-1 first time windows are T1, then the length of the last first time window is T1-(N-1)*T. Correspondingly, each first time window corresponds to the transmission time of each first signal LP-SS. For example, as shown in Figure 5, the second first time window (2 nd The first time window corresponds to the transmission timing of the first first signal LP-SS, and the third first time window (3 rd The first time window corresponds to the transmission timing of the second first signal LP-SS, and the fourth first time window (4 th The first time window corresponds to the transmission timing of the third first signal LP-SS. Alternatively, the time domain resources between the transmission timings of two adjacent first signals LP-SS constitute a first time window.

[0241] In another implementation, the timing of the transmission of the first signal LP-SS is configured by the network, for example, by configuring T1 and offset1. Furthermore, the transmission timing of each first signal LP-SS is associated with a first time window.

[0242] If, within the time window corresponding to the transmission timing of a first signal LP-SS, there is at least one configured LP-WUS MO or LP-WUS LO, then the network-side device will send the first signal LP-SS during the transmission timing of this first signal LP-SS; otherwise, it will not send the first signal LP-SS.

[0243] Correspondingly, for the behavior at the terminal side, if there is at least one configured LP-WUS MO or LP-WUS LO within the second time window associated with the transmission opportunity of a first signal LP-SS, then the terminal assumes that there is a first signal LP-SS in this transmission opportunity of the first signal LP-SS; otherwise, there is no first signal LP-SS. The configured LP-WUS MO or LP-WUS LO can be the LP-WUS MO or LP-WUS LO of other terminals, and is not limited to the LP-WUS MO or LP-WUS LO that the terminal needs to monitor. The LP-WUS MO or LP-WUS LO of other terminals can be obtained through, for example, system information. Or, if there is at least one configured LP-WUS MO or LP-WUS LO within a first time window i, where 1 < i ≤ N, then the terminal considers that there is an LP-SS in the transmission opportunity of the first signal LP-SS corresponding to this first time window. Or, if the LP-WUS MO or LP-WUS LO of the terminal is within the i-th first time window, where 1 < i ≤ N, then the terminal considers that there is an LP-SS in the transmission opportunity of the first signal LP-SS corresponding to this first time window.

[0244] Optionally, if the time interval between the transmission opportunity of a first signal LP-SS and the nearest third signal LP-SS before this transmission opportunity of the first signal LP-SS is greater than or equal to the first time threshold, the network-side device sends the first signal LP-SS at this transmission opportunity of the first signal LP-SS. Correspondingly, the terminal assumes that there is a first signal LP-SS at this transmission opportunity of the first signal LP-SS. If the time interval between the transmission opportunity of a first signal LP-SS and the nearest third signal LP-SS before this transmission opportunity of the first signal LP-SS is less than the first time threshold, the network-side device does not send the first signal LP-SS in this transmission opportunity of the first signal LP-SS. Correspondingly, the terminal assumes that there is no first signal LP-SS at this transmission opportunity of the first signal LP-SS.

[0245] Embodiment 2 takes the first signal as LP-SS, the second signal as LP-WUS, and the third signal as LP-SS as an example.

[0246] Specifically, different from Embodiment 1, in Embodiment 2, the transmission opportunity of the first signal LP-SS and whether to send the first signal LP-SS may be independent of the third signal LP-SS. Among them, the third signal LP-SS can be called the first type of synchronization signal, and the first signal LP-SS can be called the second type of synchronization signal.

[0247] In one implementation, the timing of the transmission of the first signal LP-SS is configured by the network, for example, by configuring T1 and offset1. The network side can determine whether to send the first signal LP-SS within its transmission timing based on whether there is at least one configured LP-WUS MO or LP-WUS LO after the transmission timing of the first signal LP-SS, and whether the time interval between the LP-WUS MO or LP-WUS LO and the transmission timing of the first signal LP-SS is less than or equal to a third time threshold. Specifically, for example, if there is at least one configured LP-WUS MO or LP-WUS LO after the transmission timing of the first signal LP-SS, and the time interval between the LP-WUS MO or LP-WUS LO and the transmission timing of the first signal LP-SS is less than or equal to the third time threshold, then the first signal LP-SS is sent; otherwise, the first signal LP-SS is not sent.

[0248] For example, as shown in Figure 6, if there are configured UE1 LO and UE2 LO after the transmission timing of the first first signal LP-SS, and the interval between these two LOs and the first first signal LP-SS is less than or equal to the third time threshold, then the network side transmits LP-SS during the transmission timing of this first signal LP-SS. If there are configured UE3 LO and UE4 LO after the transmission timing of the third first signal LP-SS, and the interval between these two LOs and the third first signal LP-SS is less than or equal to the third time threshold, then the network side transmits LP-SS during the transmission timing of this first signal LP-SS. After the transmission timing of the second first signal LP-SS, if there are no configured LOs within the time range where the interval is less than or equal to the third time threshold, then LP-SS is not transmitted. Optionally, whether to transmit the first signal also depends on the interval between the first signal and the third signal. For example, as shown in Figure 7, if the first signal and the third signal overlap, or the interval is less than a predefined threshold, then this first signal is not transmitted. In Figure 7, the first first signal LP-SS is not transmitted.

[0249] Correspondingly, on the terminal side, if there is at least one configured LP-WUS MO or LP-WUS LO after the transmission timing of a first signal LP-SS, and the interval between the LP-WUS MO or LP-WUS LO and the transmission timing of the first signal LP-SS is less than or equal to a third time threshold, then the terminal assumes that there is a first signal LP-SS in the transmission timing of this first signal LP-SS; otherwise, there is no first signal LP-SS.

[0250] Optionally, if the time interval between the transmission timing of a first signal LP-SS and the most recent third signal LP-SS before that transmission timing is greater than or equal to a first time threshold, the network-side device transmits the first signal LP-SS at that transmission timing, and the terminal assumes that a first signal LP-SS exists at that transmission timing. If the time interval between the transmission timing of a first signal LP-SS and the most recent third signal LP-SS before that transmission timing is less than the first time threshold, the network-side device does not transmit the first signal LP-SS at that transmission timing, and the terminal assumes that a first signal LP-SS does not exist at that transmission timing.

[0251] Example 3, taking LP-SS as the first signal, LP-WUS as the second signal, and LP-SS as the third signal as an example.

[0252] Specifically, similar to Embodiment 1, in Embodiment 3, the transmission timing of the first signal LP-SS is determined based on the time-domain resources of the third signal LP-SS. For example, N-1 transmission timings of the first signal LP-SS are evenly inserted between two adjacent third signals LP-SS. The transmission timing of the first signal LP-SS can be expressed as x*T+y*T / N+offset, where x=0,1….,y=1,2…N-1.

[0253] The difference from Embodiment 1 is that, in Embodiment 3, the network side sends the first signal LP-SS during each transmission timing of the first signal LP-SS. The network side does not determine whether to send the first signal LP-SS based on the subsequently configured or to-be-transmitted LP-WUS MO or LP-WUS LO.

[0254] Correspondingly, the terminal-side behavior assumes that there is a first signal LP-SS at each transmission time of the first signal.

[0255] Example 4, taking LP-SS as the first signal and LP-WUS as the second signal as an example.

[0256] In Example 4, it is assumed that the network side configures the transmission timing of the first signal LP-SS with a period T2 and an offset OFFSET1. The set of transmission timings for the first signal LP-SS is divided into a first type of transmission timing and a second type of transmission timing. The network side transmits LP-SS in each first type of transmission timing. Whether the network side transmits the first signal LP-SS in the second type of transmission timing is determined based on a third or fourth condition.

[0257] The intervals between the individual transmission opportunities in the first type of transmission opportunity are integer multiples of T2, such as L*T2, where L is a positive integer. For example, T2 = 80 ms and L = 4. Then, the interval between adjacent first-type transmission opportunities is 320 ms. The position of the first-type transmission opportunity can be determined according to k1*L*T2 + offset1, where k1 = 0, 1, …, such as the transmission opportunity positions of the 1st, 5th, 9th … first signals with a period of T2 are the first-type transmission opportunities. Alternatively, it can be determined by (k1*L + k2)*T2 + offset1, where k2 < L and the value of k2 is determined by network configuration or predefined rules.

[0258] Optionally, the terminal can determine the position of the first-type transmission opportunity based on the period T2, offset offset1, and L configured by the network side; or the terminal can determine the position of the first-type transmission opportunity based on the period T2, offset offset1, L, and k2 configured by the network side. The terminal can consider that there is an LP-SS in the first-type transmission opportunity.

[0259] Optionally, the first-type transmission opportunity is used for RRM measurement.

[0260] The second type of transmission opportunity is the other first signal LP-SS transmission opportunities in the set of transmission opportunities of the first signal LP-SS except for the first type of transmission opportunity. Whether to send the first signal LP-SS in the second type of transmission opportunity is judged based on the third condition or the fourth condition.

[0261] Exemplarily, if there is at least one predicted listening opportunity for the second signal LP-WUS to be sent (which can also be called the possible second signal LP-WUS to be sent) after a second-type transmission opportunity, and the time interval between the LP-WUS MO or LP-WUS LO and the second-type transmission opportunity is less than or equal to the fourth time threshold, then the network side sends the first signal LP-SS in the second-type transmission opportunity, otherwise the network side does not send the first signal LP-SS. Since whether to send LP-WUS MO or LP-WUS LO may change dynamically, the judgment condition based on which the network side sends the first signal LP-SS is also dynamically determined. But for the terminal side, this judgment can be dynamically or semi-statically determined, which is for different implementation methods of the terminal. For example, the terminal can judge whether there is a first signal LP-SS in the second-type transmission opportunity according to the position of the LP-WUS MO or LP-WUS LO that the terminal needs to monitor, or always receive it as if there is a first signal LP-SS, or blindly detect the first signal LP-SS.

[0262] As shown in Figure 8, the network side transmits the first signal LP-SS during each Type I transmission opportunity. Assume the fourth time threshold used to determine whether to transmit the first signal LP-SS during a Type II transmission opportunity is equal to the period T2 of the LP-SS transmission opportunity. Then, after the first Type II transmission opportunity, if there is no LP-WUS to be transmitted within time T2, the network side does not transmit the first signal LP-SS during this Type II transmission opportunity. The same applies to the second Type II transmission opportunity. After the third Type II transmission opportunity, if there is a second signal LP-WUS to be transmitted within time T2, the network side transmits the first signal LP-SS during this Type II transmission opportunity.

[0263] On the terminal side, the terminal assumes that the first signal LP-SS is always present in the first type of transmission opportunity. For the second type of transmission opportunity, the terminal may receive data based on the fact that the first signal LP-SS is always present in the most recent second type of transmission opportunity before its own LP-WUS MO or LP-WUS LO, or the terminal may perform blind detection of the first signal LP-SS.

[0264] For example, a possible LP-WUS MO or LP-WUS LO to be transmitted after a second type of transmission opportunity is a possible LP-WUS MO or LP-WUS LO to be transmitted within a second time window associated with this second type of transmission opportunity. For example, '2' in Figure 9 nd The first time window is the first time window associated with the first type II transmission opportunity in Figure 9. This first time window is located between the first type II transmission opportunity and the second type II transmission opportunity.

[0265] For example, if at least one configured LP-WUS MO or LP-WUS LO follows a second type of transmission opportunity, and the interval between the LP-WUS MO or LP-WUS LO and the second type of transmission opportunity is less than or equal to a predefined time threshold, then the network side transmits the first signal LP-SS during this second type of transmission opportunity; otherwise, the network side does not transmit the first signal LP-SS. It is worth noting that during the configured LP-WUS MO or LP-WUS LO, the network side may or may not transmit the second signal LP-WUS; that is, the transmission of the second signal LP-WUS may change dynamically. However, the resources of the configured LP-WUS MO or LP-WUS LO are semi-statically determined. Therefore, this judgment condition is also semi-statically determined. Compared to dynamically determined judgment conditions, this method is simpler for both the network side and the terminal implementation.

[0266] As shown in Figure 10, the network side transmits the first signal LP-SS in each Type I transmission opportunity. Assume that the predefined time threshold for determining whether to transmit LP-SS in a Type II transmission opportunity is equal to the period T2 of the LP-SS transmission opportunity. Then, after the first Type II transmission opportunity, if there is no configured LP-WUS MO or LP-WUS LO within time T2, the network side does not transmit the first signal LP-SS in this Type II transmission opportunity. The same applies to the second Type II transmission opportunity. After the third Type II transmission opportunity, if there is a configured LP-WUS MO or LP-WUS LO within time T2, the network side transmits the first signal LP-SS in this Type II transmission opportunity. It is worth noting that, unlike Figure 8, although there is no second signal LP-WUS to be transmitted in the third Type II transmission opportunity, the network side must transmit the first signal LP-SS in this Type II transmission opportunity as long as there is a configured LP-WUS MO or LP-WUS LO.

[0267] In Example 4, regarding terminal-side behavior, the terminal assumes that a first signal LP-SS always exists during the first type of transmission opportunity. For the second type of transmission opportunity, the terminal can determine whether there is an LP-SS during this second type of transmission opportunity based on whether there is at least one configured LP-WUS MO or LP-WUS LO after the second type of transmission opportunity, and whether the interval between the LP-WUS MO or LP-WUS LO and the second type of transmission opportunity is less than or equal to a predefined time threshold. The configured LP-WUS MO or LP-WUS LO can be the LP-WUS MO or LP-WUS LO of other terminals, and is not limited to the LP-WUS MO or LP-WUS LO that the terminal needs to monitor. The LP-WUS MO or LP-WUS LO of other terminals can be obtained, for example, through system information.

[0268] For example, a configured LP-WUS MO or LP-WUS LO following a second type of transmission opportunity is a configured LP-WUS MO or LP-WUS LO within a second time window associated with this second type of transmission opportunity. For example, '4' in Figure 11 th The first time window is the second time window associated with the third type of second-order transmission opportunity in Figure 11. th The first time window is located between the third type II transmission opportunity and the second type I transmission opportunity.

[0269] It should be noted that in Figures 5 to 11 above, the first signal and the second signal can also be continuous, or the transmission timing of the first signal (the transmission timing of on-demand LP-SS) and the listening timing of the second signal (LP-WUS MO or LP-WUS LO) can also be continuous.

[0270] It is easy to see that in embodiments 1 to 4 above, among all the transmission timings of the first signal LP-SS in the network configuration, the network side will definitely send the first signal LP-SS only in the 1 / P transmission timing. These first signal LP-SS can be used to ensure the accuracy of RRM measurement. In the other (P-1 / P) first signal LP-SS transmission timing, the network side determines whether to send the first signal LP-SS based on conditions (such as the third or fourth condition). The first signal LP-SS in the second type of transmission timing can be used to ensure synchronization performance. It is also possible that the terminal implementation performs RRM measurement based on the first signal LP-SS in the second type of transmission timing. This method ensures both measurement and synchronization accuracy while reducing unnecessary overhead.

[0271] In embodiments 1 to 4 above, under certain special conditions, the first signal LP-SS is not transmitted. For example, when colliding with a TDD uplink symbol, the first signal LP-SS is not transmitted. Accordingly, the terminal considers that there is no LP-SS during the transmission of this first signal LP-SS. Optionally, for embodiment 4, the special conditions apply to both the first type of transmission opportunity and the second type of transmission opportunity.

[0272] The wireless communication method provided in this application can be executed by a wireless communication device. This application uses an example of a wireless communication device executing the wireless communication method to illustrate the wireless communication device provided in this application.

[0273] This application provides a wireless communication device. As an example, the wireless communication device may be a communication equipment or a component within a communication equipment, such as a chip. The communication equipment may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0274] The wireless communication 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, such as a Central Processing Unit (CPU), microprocessor, Digital Signal Processor (DSP), Artificial Intelligence (AI) processor, Graphics Processing Unit (GPU), Application Specific Integrated Circuit (ASIC), Network Processor (NP), Field Programmable Gate Array (FPGA), 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: transceiver, pins, circuits, bus, radio frequency unit, etc.

[0275] Referring to Figure 12, when the wireless communication device is a terminal or a component in a terminal, the wireless communication device 400 includes: a processing module 401;

[0276] If the first condition or the second condition is met, the processing module 401 is used to assume that a first signal exists before the target listening time;

[0277] The first signal is used for synchronization, and the target listening timing is used for the wireless communication device 400 to listen to the second signal;

[0278] Wherein, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain.

[0279] In some embodiments, if the first condition is not met, the processing module 401 is configured to assume that the first signal did not exist before the target listening time; or,

[0280] If the first condition and the second condition are not met, the processing module 401 is configured to assume that the first signal did not exist before the target listening time.

[0281] In some embodiments, the first condition includes at least one of the following:

[0282] The time interval between the transmission timing of the first signal and the most recent third signal used for synchronization before the transmission timing of the first signal is greater than or equal to a first time threshold;

[0283] The time interval between the target listening time and the most recent third signal used for synchronization before the target listening time is greater than or equal to the second time threshold;

[0284] The target monitoring timing is located within the i-th first time window of N first time windows, wherein the N first time windows are located between two adjacent third signals used for synchronization, N and i are both positive integers, and 1 < i ≤ N;

[0285] After the transmission timing of the first signal, there is at least one configured listening timing of the second signal within a second time window associated with the transmission timing of the first signal;

[0286] The time interval between the transmission timing of the first signal and the listening timing of at least one configured second signal after the transmission timing of the first signal is less than or equal to a third time threshold;

[0287] The transmission timing of the first signal is the most recent transmission timing of the first signal before the target monitoring timing;

[0288] The interval between the transmission timing of the first signal and the target listening timing is less than or equal to a third time threshold;

[0289] or,

[0290] The second condition includes at least one of the following:

[0291] The network side configures the transmission timing of the first signal;

[0292] The transmission timing of the first signal is a first type of transmission timing, wherein the interval between two adjacent first type of transmission timings is an integer multiple of the configuration period of the transmission timing of the first signal.

[0293] In some embodiments, the second time window associated with the transmission timing of the first signal is the time-domain resource between the transmission timing of the first signal and the transmission timing of the next first signal; or,

[0294] The second time window associated with the transmission timing of the first signal is the first time window in which the end position of the transmission timing of the first signal is located among the N first time windows, or the second time window associated with the transmission timing of the first signal is the first first time window after the transmission timing of the first signal among the N first time windows.

[0295] In some embodiments, when the second time window associated with the transmission timing of the first signal is a time-domain resource between the transmission timing of the first signal and the transmission timing of the next first signal, the transmission timing of the first signal is a second type of transmission timing, and the transmission timing of the next first signal is either a first type of transmission timing or a second type of transmission timing.

[0296] The second type of transmission opportunity refers to any transmission opportunity other than the first type of transmission opportunity among the transmission opportunities of the first signal configured by the network side.

[0297] In some embodiments, the transmission timing of the first signal corresponding to the first condition is a second type of transmission timing;

[0298] The second type of transmission opportunity refers to the transmission opportunities of the first signal configured by the network side other than the first type of transmission opportunity, and the interval between two adjacent first type of transmission opportunities is an integer multiple of the configuration period of the first signal transmission opportunity.

[0299] In some embodiments, the position of the first type of transmission opportunity is k1*L*T2+offset1, or the position of the first type of transmission opportunity is (k1*L+k2)*T2+offset1;

[0300] Where k1 = 0, 1, ..., L, k2, T2 and offset1 are all positive integers, and k2 < L;

[0301] Wherein, T2 represents the configuration period for the transmission timing of the first signal.

[0302] In some embodiments, the timing of the transmission of the first signal is determined based on at least one of the following:

[0303] The period of the transmission timing of the first signal;

[0304] The offset corresponding to the transmission timing of the first signal;

[0305] The time-domain location of the third signal used for synchronization;

[0306] The time-domain position of the most recent third signal used for synchronization preceding the second signal;

[0307] The time-domain location of the second signal.

[0308] In some embodiments, the length T1 of the first time window satisfies one of the following: T1 = T / N; T1 = (T – T3) / N;

[0309] T1 is configured by the network side;

[0310] Where T is the period of the transmission timing of the third signal, and T3 is the time domain length occupied by one of the third signals.

[0311] In some embodiments, the processing module 401 is further configured to assume that at least one of the first signals and / or at least one third signal for synchronization exists within a first duration prior to the target listening time.

[0312] In some embodiments, the first signal, the second signal, and the third signal for synchronization correspond to the same spatial characteristics; the first signal and the second signal correspond to the same spatial characteristics.

[0313] In some embodiments, the second signal is used to wake up the wireless communication device 400.

[0314] Therefore, in this embodiment, when the first condition or the second condition is met, the terminal assumes that a first signal exists before the target listening time; wherein, the first signal is used for synchronization, the target listening time is used for the terminal to listen to the second signal, and the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain. Introducing the first condition or the second condition can reduce the overhead of the synchronization signal while satisfying the synchronization requirements corresponding to the listening of the second signal. For example, the first signal is LP-SS for LP-WUR synchronization, and the second signal is LP-WUS; specifically, compared to periodic LP-SS, when the first condition or the second condition is met, the terminal assumes that LP-SS exists before the listening time of LP-WUS, which can reduce the residual time-frequency offset after LP-SS synchronization and improve the receiving performance of LP-WUS; and compared to non-periodic LP-SS, when the first condition or the second condition is met, the terminal assumes that LP-SS exists before the listening time of LP-WUS, which can reduce the transmission density of LP-SS, and reduce the overhead of LP-SS while satisfying the synchronization requirements corresponding to the listening of LP-WUS.

[0315] Referring to Figure 13, when the wireless communication device is a network-side device or a component in a network-side device, the wireless communication device 500 includes: a transmitting module 501;

[0316] If the third or fourth condition is met, the sending module 501 is used to send a first signal for synchronization;

[0317] Wherein, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain.

[0318] In some embodiments, if the third condition is not met, the transmitting module 501 does not transmit the first signal for synchronization; or,

[0319] If the third and fourth conditions are not met, the sending module 501 does not send the first signal for synchronization.

[0320] In some embodiments, the third condition includes at least one of the following:

[0321] The time interval between the transmission timing of the first signal and the most recent third signal used for synchronization before the transmission timing of the first signal is greater than or equal to a first time threshold;

[0322] There is at least one listening opportunity for a configured second signal after the transmission opportunity of the first signal, and the time interval between the listening opportunity of the second signal and the transmission opportunity of the first signal is less than or equal to a third time threshold.

[0323] There is at least one listening time for a configured second signal after the transmission time of the first signal, and the time interval between the listening time of the second signal and the transmission time of the first signal is less than or equal to a third time threshold, and the time interval between the listening time of the second signal and the most recent third signal used for synchronization before the listening time of the second signal is greater than or equal to the second time threshold.

[0324] There is at least one listening time for a configured second signal after the transmission time of the first signal, and the time interval between the listening time of the second signal and the transmission time of the first signal is less than or equal to a third time threshold, and the time interval between the transmission time of the first signal and the most recent third signal used for synchronization before the transmission time of the first signal is greater than or equal to a first time threshold.

[0325] After the transmission timing of the first signal, there is at least one configured listening timing of the second signal within a second time window associated with the transmission timing of the first signal;

[0326] There is at least one predicted listening opportunity for a second signal to be sent after the transmission opportunity of the first signal, and the time interval between the predicted listening opportunity for the second signal to be sent and the transmission opportunity of the first signal is less than or equal to a fourth time threshold.

[0327] There is at least one predicted listening time for a second signal to be sent after the transmission time of the first signal, and the time interval between the predicted listening time for the second signal to be sent and the transmission time of the first signal is less than or equal to a fourth time threshold, and the time interval between the predicted listening time for the second signal to be sent and the most recent third signal used for synchronization before the predicted listening time for the second signal to be sent is greater than or equal to a fifth time threshold.

[0328] There is at least one predicted listening time for a second signal to be sent after the transmission time of the first signal, and the time interval between the listening time of the predicted second signal to be sent and the transmission time of the first signal is less than or equal to a fourth time threshold, and the time interval between the transmission time of the first signal and the most recent third signal used for synchronization before the transmission time of the first signal is greater than or equal to a first time threshold.

[0329] After the transmission of the first signal, there is at least one predicted listening opportunity for the second signal to be sent within a second time window associated with the transmission of the first signal;

[0330] or,

[0331] The fourth condition includes at least one of the following:

[0332] The transmission timing of the first signal has been configured;

[0333] The transmission timing of the first signal is a first type of transmission timing, wherein the interval between two adjacent first type of transmission timings is an integer multiple of the configuration period of the transmission timing of the first signal.

[0334] In some embodiments, the second time window associated with the transmission timing of the first signal is the time domain resource between the transmission timing of the first signal and the transmission timing of the next first signal, or, the second time window associated with the transmission timing of the first signal is the first time window where the end position of the transmission timing of the first signal is located among N first time windows, or, the second time window associated with the transmission timing of the first signal is the first first time window after the transmission timing of the first signal among N first time windows.

[0335] The N first time windows are located between two adjacent third signals used for synchronization, and N is a positive integer.

[0336] In some embodiments, the timing of listening to the at least one predicted second signal to be transmitted includes at least one of the following:

[0337] The predicted timing for listening to the second signal to be sent corresponding to the terminal;

[0338] The timing for listening to the second signal to be sent from other predicted terminals.

[0339] In some embodiments, the transmission timing of the first signal corresponding to the third condition is a second type of transmission timing;

[0340] The second type of transmission opportunity refers to the transmission opportunities of the first signal configured by the network side other than the first type of transmission opportunity, and the interval between two adjacent first type of transmission opportunities is an integer multiple of the configuration period of the first signal transmission opportunity.

[0341] In some embodiments, the position of the first type of transmission opportunity is k1*L*T2+offset1, or the position of the first type of transmission opportunity is (k1*L+k2)*T2+offset1;

[0342] Where k1 = 0, 1, ..., L, k2, T2 and offset1 are all positive integers, and k2 < L;

[0343] Wherein, T2 represents the configuration period for the transmission timing of the first signal.

[0344] In some embodiments, the timing of the transmission of the first signal is determined based on at least one of the following:

[0345] The period of the transmission timing of the first signal;

[0346] The offset corresponding to the transmission timing of the first signal;

[0347] The time-domain location of the third signal used for synchronization;

[0348] The time-domain position of the most recent third signal used for synchronization preceding the second signal;

[0349] The time-domain location of the second signal.

[0350] In some embodiments, the first signal, the second signal, and the third signal for synchronization correspond to the same spatial characteristics; the first signal and the second signal correspond to the same spatial characteristics.

[0351] In some embodiments, the second signal is used to wake up the terminal.

[0352] Therefore, in this embodiment, when the third or fourth condition is met, the network-side device sends a first signal for synchronization; wherein the first signal is used for synchronization, and the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain. Introducing the third or fourth condition can reduce the overhead of the synchronization signal while satisfying the synchronization requirements corresponding to the monitoring of the second signal. For example, the first signal is LP-SS for LP-WUR synchronization, and the second signal is LP-WUS; specifically, compared to periodic LP-SS, when the third or fourth condition is met, the network-side device sending LP-SS for synchronization can reduce the residual time-frequency offset after LP-SS synchronization and improve the reception performance of LP-WUS; and compared to non-periodic LP-SS, when the third or fourth condition is met, the network-side device sending LP-SS for synchronization can reduce the transmission density of LP-SS, thus reducing the overhead of LP-SS while satisfying the synchronization requirements corresponding to the monitoring of LP-WUS.

[0353] The wireless communication device provided in this application embodiment can implement the various processes implemented in the method embodiment of FIG3 or FIG4 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0354] As shown in Figure 14, this application embodiment also provides a communication device 600, including a processor 601 and a memory 602, wherein the memory 602 stores programs or instructions that can run on the processor 601.

[0355] For example, when the communication device 600 is a terminal, the program or instructions executed by the processor 601 implement the various steps executed by the terminal in the above wireless communication method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0356] For example, when the communication device 600 is a network-side device, the program or instructions executed by the processor 601 implement the various steps executed by the network-side device in the above wireless communication method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0357] This application 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 the steps in the method embodiment shown in FIG3. This terminal embodiment corresponds to the above-described terminal-side method embodiment, and all implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and can achieve the same technical effect. The terminal may be the wireless communication device 400 shown in FIG12.

[0358] Specifically, Figure 15 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.

[0359] The terminal 700 includes, but is not limited to, at least some of the following components: radio frequency unit 701, network module 702, audio output unit 703, input unit 704, sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, and processor 710.

[0360] Those skilled in the art will understand that the terminal 700 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to the processor 710 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 15 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.

[0361] It should be understood that, in this embodiment, the input unit 704 may include a graphics processor 7041 and a microphone 7042. The graphics processor 7041 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 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0362] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 701 can transmit it to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to the network-side device. Typically, the radio frequency unit 701 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0363] The memory 709 can be used to store software programs or instructions, as well as various data. The memory 709 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 709 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 709 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0364] Processor 710 may include one or more processing units; optionally, processor 710 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 710.

[0365] In some embodiments, if a first condition or a second condition is met, the processor 710 is configured to assume that a first signal exists prior to the target listening opportunity;

[0366] Wherein, the first signal is used for synchronization, and the target listening timing is used for the terminal to listen to the second signal;

[0367] Wherein, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain.

[0368] Therefore, in this embodiment, when the first condition or the second condition is met, the terminal assumes that a first signal exists before the target listening time; wherein, the first signal is used for synchronization, the target listening time is used for the terminal to listen to the second signal, and the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain. Introducing the first condition or the second condition can reduce the overhead of the synchronization signal while satisfying the synchronization requirements corresponding to the listening of the second signal. For example, the first signal is LP-SS for LP-WUR synchronization, and the second signal is LP-WUS; specifically, compared to periodic LP-SS, when the first condition or the second condition is met, the terminal assumes that LP-SS exists before the listening time of LP-WUS, which can reduce the residual time-frequency offset after LP-SS synchronization and improve the receiving performance of LP-WUS; and compared to non-periodic LP-SS, when the first condition or the second condition is met, the terminal assumes that LP-SS exists before the listening time of LP-WUS, which can reduce the transmission density of LP-SS, and reduce the overhead of LP-SS while satisfying the synchronization requirements corresponding to the listening of LP-WUS.

[0369] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effect. To avoid repetition, it will not be described again here.

[0370] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method embodiment shown in FIG4. This network-side device embodiment corresponds to the method embodiment executed by the above-described network-side device. 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.

[0371] This application embodiment also provides a network-side device, which can be the wireless communication device 500 shown in FIG13. Specifically, as shown in FIG16, the network-side device 800 includes: an antenna 81, a radio frequency device 82, a baseband device 83, a processor 84, and a memory 85. The antenna 81 is connected to the radio frequency device 82. In the uplink direction, the radio frequency device 82 receives information through the antenna 81 and sends the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be transmitted and sends it to the radio frequency device 82. The radio frequency device 82 processes the received information and transmits it through the antenna 81.

[0372] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 83, which includes a baseband processor.

[0373] The baseband device 83 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG16. One of the chips is, for example, a baseband processor, which is connected to the memory 85 via a bus interface to call the program in the memory 85 and execute the operation of the network-side device shown in the above method embodiment.

[0374] The network-side device may also include a network interface 86, such as a Common Public Radio Interface (CPRI).

[0375] Specifically, the network-side device 800 in this application embodiment further includes: instructions or programs stored in memory 85 and executable on processor 84. Processor 84 calls the instructions or programs in memory 85 to execute the methods executed by each module shown in FIG13 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0376] 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 wireless communication method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0377] The processor mentioned above is the processor in the terminal or network-side device described in the above embodiments. 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.

[0378] 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 wireless communication method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0379] 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.

[0380] 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 wireless communication method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0381] This application also provides a wireless communication system, including: a terminal and a network-side device. The terminal can be used to perform the steps performed by the terminal in the wireless communication method described above, and the network-side device can be used to perform the steps performed by the network-side device in the wireless communication method described above.

[0382] 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.

[0383] 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 includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0384] 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

A wireless communication method, comprising: If either the first or second condition is met, the terminal assumes that a first signal existed before the target listening opportunity. Wherein, the first signal is used for synchronization, and the target listening timing is used for the terminal to listen to the second signal; Wherein, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain. According to the method of claim 1, wherein, The method further includes: If the first condition is not met, the terminal assumes that the first signal did not exist before the target listening opportunity; or, If the first and second conditions are not met, the terminal assumes that the first signal did not exist before the target listening time. The method according to claim 1 or 2, wherein, The first condition includes at least one of the following: The time interval between the transmission timing of the first signal and the most recent third signal used for synchronization before the transmission timing of the first signal is greater than or equal to a first time threshold; The time interval between the target listening time and the most recent third signal used for synchronization before the target listening time is greater than or equal to the second time threshold; The target monitoring timing is located within the i-th first time window of N first time windows, wherein the N first time windows are located between two adjacent third signals used for synchronization, N and i are both positive integers, and 1 < i ≤ N; After the transmission timing of the first signal, there is at least one configured listening timing of the second signal within a second time window associated with the transmission timing of the first signal; The time interval between the transmission timing of the first signal and the listening timing of at least one configured second signal after the transmission timing of the first signal is less than or equal to a third time threshold; The transmission timing of the first signal is the most recent transmission timing of the first signal before the target monitoring timing; The interval between the transmission timing of the first signal and the target listening timing is less than or equal to a third time threshold; or, The second condition includes at least one of the following: The network side configures the transmission timing of the first signal; The transmission timing of the first signal is a first type of transmission timing, wherein the interval between two adjacent first type of transmission timings is an integer multiple of the configuration period of the transmission timing of the first signal. The method according to claim 3, wherein, The second time window associated with the transmission timing of the first signal is the time-domain resource between the transmission timing of the first signal and the transmission timing of the next first signal; or, The second time window associated with the transmission timing of the first signal is the first time window in which the end position of the transmission timing of the first signal is located among the N first time windows, or the second time window associated with the transmission timing of the first signal is the first first time window after the transmission timing of the first signal among the N first time windows. The method according to claim 4, wherein, When the second time window associated with the transmission timing of the first signal is the time domain resource between the transmission timing of the first signal and the transmission timing of the next first signal, the transmission timing of the first signal is a second type of transmission timing, and the transmission timing of the next first signal is either a first type of transmission timing or a second type of transmission timing. The second type of transmission opportunity refers to any transmission opportunity other than the first type of transmission opportunity among the transmission opportunities of the first signal configured by the network side. The method according to any one of claims 1 to 5, wherein, The transmission timing of the first signal corresponding to the first condition is the second type of transmission timing; The second type of transmission opportunity refers to the transmission opportunities of the first signal configured by the network side other than the first type of transmission opportunity, and the interval between two adjacent first type of transmission opportunities is an integer multiple of the configuration period of the first signal transmission opportunity. The method according to claim 3, 5 or 6, wherein, The position of the first type of transmission opportunity is k1*L*T2+offset1, or the position of the first type of transmission opportunity is (k1*L+k2)*T2+offset1; Where k1 = 0, 1, ..., L, k2, T2 and offset1 are all positive integers, and k2 < L; Wherein, T2 represents the configuration period for the transmission timing of the first signal. The method according to any one of claims 1 to 7, wherein, The timing of the transmission of the first signal is determined based on at least one of the following: The period of the transmission timing of the first signal; The offset corresponding to the transmission timing of the first signal; The time-domain location of the third signal used for synchronization; The time-domain position of the most recent third signal used for synchronization preceding the second signal; The time-domain location of the second signal. The method according to any one of claims 3 to 5, wherein, The length T1 of the first time window satisfies one of the following: T1 = T / N; T1 = (T – T3) / N; T1 is configured by the network side; Where T is the period of the transmission timing of the third signal, and T3 is the time domain length occupied by one of the third signals. The method according to any one of claims 1 to 9, wherein, The method further includes: The terminal assumes that at least one of the first signals and / or at least one third signal for synchronization exist within a first duration prior to the target listening time. The method according to any one of claims 1 to 10, wherein, The first signal, the second signal, and the third signal used for synchronization correspond to the same spatial characteristics; The first signal and the second signal have the same spatial characteristics. The method according to any one of claims 1 to 11, wherein, The second signal is used to wake up the terminal. A wireless communication method, comprising: If the third or fourth condition is met, the network-side device sends a first signal for synchronization. Wherein, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain. The method according to claim 13, wherein, The method further includes: If the third condition is not met, the network-side device does not send the first signal for synchronization; or, If the third and fourth conditions are not met, the network-side device does not send the first signal for synchronization. The method according to claim 13 or 14, wherein, The third condition includes at least one of the following: The time interval between the transmission timing of the first signal and the most recent third signal used for synchronization before the transmission timing of the first signal is greater than or equal to a first time threshold; There is at least one listening opportunity for a configured second signal after the transmission opportunity of the first signal, and the time interval between the listening opportunity of the second signal and the transmission opportunity of the first signal is less than or equal to a third time threshold. There is at least one listening time for a configured second signal after the transmission time of the first signal, and the time interval between the listening time of the second signal and the transmission time of the first signal is less than or equal to a third time threshold, and the time interval between the listening time of the second signal and the most recent third signal used for synchronization before the listening time of the second signal is greater than or equal to the second time threshold. There is at least one listening time for a configured second signal after the transmission time of the first signal, and the time interval between the listening time of the second signal and the transmission time of the first signal is less than or equal to a third time threshold, and the time interval between the transmission time of the first signal and the most recent third signal used for synchronization before the transmission time of the first signal is greater than or equal to a first time threshold. After the transmission timing of the first signal, there is at least one configured listening timing of the second signal within a second time window associated with the transmission timing of the first signal; There is at least one predicted listening opportunity for a second signal to be sent after the transmission opportunity of the first signal, and the time interval between the predicted listening opportunity for the second signal to be sent and the transmission opportunity of the first signal is less than or equal to a fourth time threshold. There is at least one predicted listening time for a second signal to be sent after the transmission time of the first signal, and the time interval between the predicted listening time for the second signal to be sent and the transmission time of the first signal is less than or equal to a fourth time threshold, and the time interval between the predicted listening time for the second signal to be sent and the most recent third signal used for synchronization before the predicted listening time for the second signal to be sent is greater than or equal to a fifth time threshold. There is at least one predicted listening time for a second signal to be sent after the transmission time of the first signal, and the time interval between the listening time of the predicted second signal to be sent and the transmission time of the first signal is less than or equal to a fourth time threshold, and the time interval between the transmission time of the first signal and the most recent third signal used for synchronization before the transmission time of the first signal is greater than or equal to a first time threshold. After the transmission of the first signal, there is at least one predicted listening opportunity for the second signal to be transmitted within a second time window associated with the transmission of the first signal; or, The fourth condition includes at least one of the following: The transmission timing of the first signal has been configured; The transmission timing of the first signal is a first type of transmission timing, wherein the interval between two adjacent first type of transmission timings is an integer multiple of the configuration period of the transmission timing of the first signal. The method according to claim 15, wherein, The second time window associated with the transmission timing of the first signal is the time domain resource between the transmission timing of the first signal and the transmission timing of the next first signal, or the second time window associated with the transmission timing of the first signal is the first time window where the end position of the transmission timing of the first signal is located among N first time windows, or the second time window associated with the transmission timing of the first signal is the first first time window after the transmission timing of the first signal among N first time windows. The N first time windows are located between two adjacent third signals used for synchronization, where N is a positive integer. The method according to claim 15 or 16, wherein, The timing of listening to at least one predicted second signal to be transmitted includes at least one of the following: The timing for listening to the second signal to be sent corresponding to the predicted terminal; The timing for listening to the second signal to be sent from other predicted terminals. The method according to any one of claims 15 to 17, wherein, The transmission timing of the first signal corresponding to the third condition is the second type of transmission timing; The second type of transmission opportunity refers to any transmission opportunity other than the first type of transmission opportunity among the transmission opportunities of the first signal configured by the network side. The method according to any one of claims 15 to 18, wherein, The position of the first type of transmission opportunity is k1*L*T2+offset1, or the position of the first type of transmission opportunity is (k1*L+k2)*T2+offset1; Where k1 = 0, 1, ..., L, k2, T2 and offset1 are all positive integers, and k2 < L; Wherein, T2 represents the configuration period for the transmission timing of the first signal. The method according to any one of claims 13 to 19, wherein, The timing of the transmission of the first signal is determined based on at least one of the following: The period of the transmission timing of the first signal; The offset corresponding to the transmission timing of the first signal; The time-domain location of the third signal used for synchronization; The time-domain position of the most recent third signal used for synchronization preceding the second signal; The time-domain location of the second signal. The method according to any one of claims 13 to 20, wherein, The first signal, the second signal, and the third signal used for synchronization correspond to the same spatial characteristics; The first signal and the second signal have the same spatial characteristics. The method according to any one of claims 13 to 21, wherein, The second signal is used to wake up the terminal. A wireless communication device, comprising: Processing module; If the first condition or the second condition is met, the processing module is used to assume that a first signal existed before the target listening time; Wherein, the first signal is used for synchronization, and the target listening time is used for the wireless communication device to listen to the second signal; wherein, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain. The apparatus according to claim 23, wherein, If the first condition is not met, the processing module is configured to assume that the first signal did not exist before the target listening time; or, If the first condition and the second condition are not met, the processing module is configured to assume that the first signal did not exist before the target listening time. The apparatus according to claim 23 or 24, wherein, The first condition includes at least one of the following: The time interval between the transmission timing of the first signal and the most recent third signal used for synchronization before the transmission timing of the first signal is greater than or equal to a first time threshold; The time interval between the target listening time and the most recent third signal used for synchronization before the target listening time is greater than or equal to the second time threshold; The target monitoring timing is located within the i-th first time window of N first time windows, wherein the N first time windows are located between two adjacent third signals used for synchronization, N and i are both positive integers, and 1 < i ≤ N; After the transmission timing of the first signal, there is at least one configured listening timing of the second signal within a second time window associated with the transmission timing of the first signal; The time interval between the transmission timing of the first signal and the listening timing of at least one configured second signal after the transmission timing of the first signal is less than or equal to a third time threshold; The transmission timing of the first signal is the most recent transmission timing of the first signal before the target monitoring timing; The interval between the transmission timing of the first signal and the target listening timing is less than or equal to a third time threshold; or, The second condition includes at least one of the following: The network side configures the transmission timing of the first signal; The transmission timing of the first signal is a first type of transmission timing, wherein the interval between two adjacent first type of transmission timings is an integer multiple of the configuration period of the transmission timing of the first signal. The apparatus according to claim 25, wherein, The second time window associated with the transmission timing of the first signal is the time-domain resource between the transmission timing of the first signal and the transmission timing of the next first signal; or, The second time window associated with the transmission timing of the first signal is the first time window in which the end position of the transmission timing of the first signal is located among the N first time windows, or the second time window associated with the transmission timing of the first signal is the first first time window after the transmission timing of the first signal among the N first time windows. The apparatus according to any one of claims 23 to 26, wherein, The transmission timing of the first signal corresponding to the first condition is the second type of transmission timing; The second type of transmission opportunity refers to the transmission opportunities of the first signal configured by the network side other than the first type of transmission opportunity, and the interval between two adjacent first type of transmission opportunities is an integer multiple of the configuration period of the first signal transmission opportunity. The apparatus according to any one of claims 23 to 27, wherein, The timing of the transmission of the first signal is determined based on at least one of the following: The period of the transmission timing of the first signal; The offset corresponding to the transmission timing of the first signal; The time-domain location of the third signal used for synchronization; The time-domain position of the most recent third signal used for synchronization preceding the second signal; The time-domain location of the second signal. The apparatus according to any one of claims 23 to 28, wherein, The processing module is also configured to assume that at least one of the first signals and / or at least one third signal for synchronization exists within a first duration prior to the target listening time. A wireless communication device, comprising: Sending module; If the third or fourth condition is met, the transmitting module is used to transmit a first signal for synchronization; Wherein, the first signal and the second signal are discontinuous in the time domain, or the first signal and the second signal are continuous in the time domain. The apparatus according to claim 30, wherein, If the third condition is not met, the transmitting module does not transmit the first signal for synchronization; or, If the third and fourth conditions are not met, the transmitting module does not transmit the first signal for synchronization. The apparatus according to claim 30 or 31, wherein, The third condition includes at least one of the following: The time interval between the transmission timing of the first signal and the most recent third signal used for synchronization before the transmission timing of the first signal is greater than or equal to a first time threshold; There is at least one listening opportunity for a configured second signal after the transmission opportunity of the first signal, and the time interval between the listening opportunity of the second signal and the transmission opportunity of the first signal is less than or equal to a third time threshold. There is at least one listening time for a configured second signal after the transmission time of the first signal, and the time interval between the listening time of the second signal and the transmission time of the first signal is less than or equal to a third time threshold, and the time interval between the listening time of the second signal and the most recent third signal used for synchronization before the listening time of the second signal is greater than or equal to the second time threshold. There is at least one listening time for a configured second signal after the transmission time of the first signal, and the time interval between the listening time of the second signal and the transmission time of the first signal is less than or equal to a third time threshold, and the time interval between the transmission time of the first signal and the most recent third signal used for synchronization before the transmission time of the first signal is greater than or equal to a first time threshold. After the transmission timing of the first signal, there is at least one configured listening timing of the second signal within a second time window associated with the transmission timing of the first signal; There is at least one predicted listening opportunity for a second signal to be sent after the transmission opportunity of the first signal, and the time interval between the predicted listening opportunity for the second signal to be sent and the transmission opportunity of the first signal is less than or equal to a fourth time threshold. There is at least one predicted listening time for a second signal to be sent after the transmission time of the first signal, and the time interval between the predicted listening time for the second signal to be sent and the transmission time of the first signal is less than or equal to a fourth time threshold, and the time interval between the predicted listening time for the second signal to be sent and the most recent third signal used for synchronization before the predicted listening time for the second signal to be sent is greater than or equal to a fifth time threshold. There is at least one predicted listening time for a second signal to be sent after the transmission time of the first signal, and the time interval between the listening time of the predicted second signal to be sent and the transmission time of the first signal is less than or equal to a fourth time threshold, and the time interval between the transmission time of the first signal and the most recent third signal used for synchronization before the transmission time of the first signal is greater than or equal to a first time threshold. After the transmission of the first signal, there is at least one predicted listening opportunity for the second signal to be transmitted within a second time window associated with the transmission of the first signal; or, The fourth condition includes at least one of the following: The transmission timing of the first signal has been configured; The transmission timing of the first signal is a first type of transmission timing, wherein the interval between two adjacent first type of transmission timings is an integer multiple of the configuration period of the transmission timing of the first signal. The apparatus according to any one of claims 30 to 32, wherein, The transmission timing of the first signal corresponding to the third condition is the second type of transmission timing; The second type of transmission opportunity refers to the transmission opportunities of the first signal configured by the network side other than the first type of transmission opportunity, and the interval between two adjacent first type of transmission opportunities is an integer multiple of the configuration period of the first signal transmission opportunity. The apparatus according to any one of claims 30 to 33, wherein, The timing of the transmission of the first signal is determined based on at least one of the following: The period of the transmission timing of the first signal; The offset corresponding to the transmission timing of the first signal; The time-domain location of the third signal used for synchronization; The time-domain position of the most recent third signal used for synchronization preceding the second signal; The time-domain location of the second signal. A terminal includes 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 wireless communication method as described in any one of claims 1 to 12. A network-side device includes 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 wireless communication method as described in any one of claims 13 to 22. A readable storage medium storing a program or instructions that, when executed by a processor, implement the wireless communication method as claimed in any one of claims 1 to 12, or implement the steps of the wireless communication method as claimed in any one of claims 13 to 22.

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