Wake-up method and communication apparatus

Abstract

The present application provides a wake-up method and a communication apparatus. In the method, a wake-up signal received by a first receiver of a terminal device comprises first information, wherein the first information can indicate whether there is a new transmission and / or whether there is a retransmission in the next scheduling, and then on the basis of the first information, the terminal device determines whether to wake up a second receiver of the terminal device on the basis of the wake-up signal. On the basis of the first information, the terminal device can determine whether to wake up the second receiver of the terminal device on the basis of the wake-up signal instead of waking up the second receiver on the basis of the wake-up signal immediately upon receiving the wake-up signal. Therefore, when the terminal device does not wake up the second receiver of the terminal device on the basis of the first information, the situation in which the terminal device that does not need to receive next scheduling information is waken up can be reduced, thereby reducing the energy consumption of the terminal device.

Description

A wake-up method and a communication device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on October 31, 2023, with application number 202311441998.4 and invention name “A wake-up method and communication device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of communications, and in particular to a wake-up method and a communication device. Background Art

[0003] Low-power wake-up signal (LP-WUS) is a technology proposed by Release 18 (R18) of the 3rd Generation Partnership Project (3GPP) for reducing the energy consumption of terminal devices. Terminal devices that support LP-WUS technology adopt a main and auxiliary receiving link combination mode. Specifically, the signal receiving function of the terminal device includes a main link receiver (main receiver) and an auxiliary link receiver (i.e., a low-power wake-up signal receiver (LP-WUS receiver, LP-WUR)). The main link is in an ultra-deep sleep state before being awakened by the low-power wake-up signal. After receiving the wake-up signal, the auxiliary link can trigger the start of the main link. Only after the main link is awakened can it monitor the physical downlink control channel (PDCCH) and receive downlink control information (DCI) and other information, and then determine the information related to the next scheduling based on the DCI.

[0004] However, for LP-WUS terminal devices in the multicast and broadcast service (MBS) scenario, terminal devices belonging to the same user group detect a wake-up signal in the same search space, which triggers all terminal devices in the user group to wake up the main link to monitor the PDCCH to obtain DCI, and then obtain information related to the next scheduling. However, there may be terminal devices in the user group that do not need to obtain information related to the next scheduling, but are also awakened by detecting the wake-up signal. As a result, these terminal devices generate unnecessary energy consumption and affect energy saving.

[0005] Summary of the Invention

[0006] The present application provides a wake-up method and a communication device for reducing the situation where terminal devices that do not need to receive the next scheduling are woken up, thereby saving energy consumption of the terminal devices.

[0007] In a first aspect, the present application provides a wake-up method, which can be executed by a terminal device or by a component of the terminal device (e.g., a processor, a chip, or a chip system). Taking the terminal device as an example, the terminal device receives a wake-up signal via a first receiver, the wake-up signal including first information, the first information being used to indicate whether there will be a new transmission and / or a retransmission in the next scheduling; the terminal device determines whether to wake up a second receiver of the terminal device based on the first information, where the operating power of the first receiver is less than the operating power of the second receiver.

[0008] In the present application, a wake-up signal received by a first receiver of a terminal device includes first information, which can indicate whether there will be a new transmission and / or a retransmission in the next scheduling. Then, based on the first information, the terminal device determines whether to wake up a second receiver of the terminal device based on the wake-up signal. Because the terminal device can decide whether to wake up the second receiver of the terminal device based on the wake-up signal based on the first information, rather than immediately waking up the second receiver based on the wake-up signal after receiving the wake-up signal, when the terminal device does not wake up the second receiver of the terminal device based on the first information, it is beneficial to save energy consumption of the terminal device.

[0009] In one possible implementation, the wake-up signal is used to wake up at least one user group, and the terminal devices in the at least one user group listen for scheduling information for the next scheduling in the same search space. Optionally, a user group includes at least one terminal device, and the terminal devices in a user group have the same group identifier. It can be understood that the terminal device is a terminal device for receiving multicast services.

[0010] In this embodiment, the wake-up signal is used to wake up at least one user group. Different terminal devices in the same user group may decide whether to wake up the second receiver of the terminal device based on the first information. This allows some terminal devices in a user group receiving the same wake-up signal to wake up the second receiver, while other terminal devices may not. This not only improves the transmission efficiency of multicast service data in MBS scenarios, but also helps save energy for some terminal devices in the user group.

[0011] In a possible implementation manner, the terminal device determines whether to wake up the second receiver of the terminal device based on the first information in any one of the following implementations:

[0012] In one implementation, if the terminal device successfully receives the last scheduling, and the first information indicates that there is no new transmission in the next scheduling, the terminal device does not wake up the second receiver. Optionally, the first information may indicate that there is no new transmission and no retransmission in the next scheduling, or the first information may indicate that there is no new transmission and no retransmission in the next scheduling.

[0013] In one example, if the terminal device successfully receives the last schedule, and the first information indicates that there is no new transmission and no retransmission in the next schedule, the terminal device does not wake up the second receiver. In another example, if the terminal device successfully receives the last schedule, and the first information indicates that there is no new transmission and there is a retransmission in the next schedule, the terminal device does not wake up the second receiver.

[0014] In this embodiment, since the terminal device has successfully received the last scheduled message, it expects to receive a new transmission in the next scheduled message and does not need to receive a retransmission. Therefore, when the first information indicates that there will be no new transmission in the next scheduled message (regardless of whether there is a retransmission), the terminal device does not wake up the second receiver, which helps save energy consumption of the terminal device.

[0015] In another implementation, if the terminal device successfully receives the last scheduling, and the first information indicates that there is a new transmission in the next scheduling, the terminal device wakes up the second receiver. Optionally, the first information may indicate that there is a new transmission and a retransmission in the next scheduling, or the first information may indicate that there is a new transmission and no retransmission in the next scheduling.

[0016] In one example, if the terminal device successfully receives the last schedule, and the first information indicates that there is a new transmission and a retransmission in the next schedule, the terminal device wakes up the second receiver. In another example, if the terminal device successfully receives the last schedule, and the first information indicates that there is a new transmission and no retransmission in the next schedule, the terminal device wakes up the second receiver.

[0017] In this embodiment, since the terminal device has successfully received the last scheduling, the terminal device expects to receive a new transmission in the next scheduling. Therefore, when the first information indicates that there is a new transmission in the next scheduling, the terminal device may not care whether there is a retransmission in the next scheduling. The terminal device is more inclined to wake up the second receiver, which is beneficial to ensure that the second receiver of the terminal device can receive the new transmission of the terminal device when it wakes up, reducing the meaningless wake-up of the second receiver of the terminal device, and helping to save energy consumption of the terminal device.

[0018] In another implementation, if the terminal device fails to successfully receive the last scheduling, and the first information indicates that there is no new transmission and no retransmission in the next scheduling, the terminal device does not wake up the second receiver.

[0019] In this embodiment, since the terminal device did not successfully receive the last scheduling, the terminal device expects to receive the retransmission that was not successfully received in the last scheduling in the next scheduling, or the terminal device is awakened to receive other new transmissions. Therefore, when the first information indicates that there is neither a new transmission nor a retransmission in the next scheduling, the terminal device does not wake up the second receiver, reducing the meaningless wake-up of the second receiver of the terminal device, which is beneficial to saving energy consumption of the terminal device.

[0020] In another implementation, if the terminal device fails to successfully receive the last scheduling, and the first information indicates that there is a new transmission and / or a retransmission in the next scheduling, the terminal device wakes up the second receiver.

[0021] In one example, the first information indicates that there is a new transmission in the next scheduling. Optionally, the first information indicates that there is a new transmission and a retransmission in the next scheduling, or the first information indicates that there is a new transmission and no retransmission in the next scheduling.

[0022] In another example, the first information indicates that there is a retransmission in the next scheduling. Optionally, the first information indicates that there is a new transmission and a retransmission in the next scheduling, or the first information indicates that there is no new transmission and a retransmission in the next scheduling.

[0023] In this embodiment, since the terminal device did not successfully receive the last scheduling, the terminal device expects to receive the retransmission that was not successfully received in the last scheduling in the next scheduling, or the terminal device is awakened to receive other new transmissions. Therefore, when the first information indicates that there is a new transmission and / or a retransmission in the next scheduling, the terminal device wakes up the second receiver to monitor the new transmission and / or retransmission in the next scheduling, which is beneficial to improve the probability of the terminal device successfully receiving the next scheduling while saving energy consumption of the terminal device, thereby improving data transmission efficiency.

[0024] In a possible implementation manner, the first information is further used to indicate a new transmission type and / or a retransmission type;

[0025] The type of new transmission is used to indicate: the new data indicator (NDI) of the last scheduling is 0, and the NDI of the next scheduling is 1; or the new data indicator NDI of the last scheduling is 1, and the NDI of the next scheduling is 0;

[0026] or,

[0027] The retransmission type is used to indicate: the NDI of the new data indicated in the last scheduling is 0, and the NDI of the next scheduling is 0; or, the NDI of the new data indicated in the last scheduling is 1, and the NDI of the next scheduling is 1.

[0028] In a possible implementation, when the first information can also indicate the type of the new transmission, a specific implementation manner in which the terminal device determines whether to wake up the second receiver of the terminal device based on the first information may include:

[0029] If the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling is the same as the NDI of the last scheduling indicated by the type of the new transmission, the terminal device wakes up the second receiver; or,

[0030] If the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling is different from the NDI of the last scheduling indicated by the type of the new transmission, the terminal device does not wake up the second receiver.

[0031] In this embodiment, the first information can indicate the type of new transmission. The terminal device only wakes up the second receiver if it detects, based on the first information, that there is a new transmission type it expects to receive (i.e., the NDI of the last scheduled transmission is the same as the NDI of the last scheduled transmission indicated by the type of the new transmission). Otherwise, the terminal device does not wake up the second receiver. This not only ensures that new transmissions that the terminal device expects to receive are not missed, which helps improve data transmission reliability, but also reduces the number of times the terminal device is woken up by unexpected new transmissions, which helps save energy consumption.

[0032] In one example, if the terminal device successfully receives the last scheduling, and the first information indicates that there is a new transmission in the next scheduling, the terminal device wakes up the second receiver, including:

[0033] If the terminal device successfully receives the last scheduling, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling successfully received by the terminal device is the same as the NDI of the last scheduling indicated by the type of the new transmission, then the terminal device wakes up the second receiver; or,

[0034] The method also includes: if the terminal device successfully receives the last scheduling, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling successfully received by the terminal device is different from the NDI of the last scheduling indicated by the type of the new transmission, then the terminal device does not wake up the second receiver.

[0035] In another example, if the terminal device fails to successfully receive the last scheduling, and the first information indicates that there is a new transmission in the next scheduling, the terminal device wakes up the second receiver, including:

[0036] If the terminal device fails to successfully receive the last scheduling, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling that the terminal device fails to successfully receive is the same as the NDI of the last scheduling indicated by the type of the new transmission, then the terminal device wakes up the second receiver; or,

[0037] The method also includes: if the terminal device fails to successfully receive the last scheduling, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling that the terminal device fails to successfully receive is different from the NDI of the last scheduling indicated by the type of the new transmission, then the terminal device does not wake up the second receiver.

[0038] In a possible implementation manner, when the first information can also indicate the type of retransmission, a specific implementation manner in which the terminal device determines whether to wake up the second receiver of the terminal device based on the first information may include:

[0039] If the last scheduling is not received successfully, the first information indicates that there is a retransmission in the next scheduling, and the NDI of the last scheduling that was not received successfully is the same as the NDI of the last scheduling indicated by the retransmission type, then the second receiver is woken up.

[0040] For example, if the NDI of the last schedule is 0 and the terminal device fails to receive the last schedule, the terminal device needs to listen for retransmissions with NDIs of 0 to 0. Alternatively, if the NDI of the last schedule is 1 and the terminal device fails to receive the last schedule, the terminal device needs to listen for retransmissions with NDIs of 1 to 1. This helps ensure that retransmissions that the terminal device expects to receive are not missed, thereby improving the reliability of data transmission.

[0041] If the last scheduling is not received successfully, the first information indicates that there is a retransmission in the next scheduling, and the NDI of the last scheduling that was not received successfully is different from the NDI of the last scheduling indicated by the retransmission type, the second receiver will not be woken up.

[0042] For example, if the NDI of the last scheduling is 0 and the terminal device does not successfully receive the last scheduling, the terminal device does not need to monitor the retransmission with NDI of 1 to 1. Alternatively, if the NDI of the last scheduling is 1 and the terminal device does not successfully receive the last scheduling, the terminal device does not need to monitor the retransmission with NDI of 0 to 0. Therefore, it is possible to reduce the situation where the terminal device is awakened by an unexpected retransmission, which is beneficial to saving energy consumption of the terminal device.

[0043] In a possible implementation, the first information is also used to indicate an identifier of the process.

[0044] In this embodiment, by adding a bit indication process identifier in the first information, it is possible to individually indicate what new retransmission type each process corresponds to, so that the terminal device can turn on the second receiver to listen to the DCI according to its needs, thereby eliminating the need for the terminal device to unnecessarily turn on the second receiver to listen to the DCI, which is beneficial to energy saving of the terminal device.

[0045] In a second aspect, the present application provides a wake-up method, which can be performed by an access network device or by a component of the access network device (e.g., a processor, a chip, or a chip system). Taking the access network device as an example, the access network device sends a wake-up signal, which includes first information, and the first information is used to indicate whether there is a new transmission and / or a retransmission in the next scheduling. The first information is used by the terminal device to determine whether to wake up the second receiver of the terminal device based on the wake-up signal received by the first receiver of the terminal device.

[0046] In a possible implementation, the wake-up signal is used to wake up at least one user group, and terminal devices in the at least one user group listen to scheduling information of the next scheduling in the same search space.

[0047] In a possible implementation, the first information is further used to indicate a new transmission type and / or a retransmission type; wherein the new transmission type is used to indicate: the NDI of the new data indicated in the last scheduling is 0, and the NDI of the next scheduling is 1; or, the NDI of the new data indicated in the last scheduling is 1, and the NDI of the next scheduling is 0;

[0048] or,

[0049] The retransmission type is used to indicate: the NDI of the new data indicated in the last scheduling is 0, and the NDI of the next scheduling is 0; or, the NDI of the new data indicated in the last scheduling is 1, and the NDI of the next scheduling is 1.

[0050] In a possible implementation, the first information is also used to indicate an identifier of the process.

[0051] It should be noted that the specific implementation methods and beneficial effects of this aspect are similar to some implementation methods in the first aspect above. Please refer to the specific implementation methods and beneficial effects of the first aspect for details, and no further details will be given here.

[0052] In a third aspect, the present application provides a wake-up method, which can be executed by a terminal device or by a component of the terminal device (e.g., a processor, a chip, or a chip system). Taking a first terminal device as an example, the first terminal device sends a wake-up signal to a second terminal device, where the wake-up signal includes first information, where the first information is used to indicate whether there is a new transmission and / or a retransmission in the next scheduling, and the first information is used by the second terminal device to determine whether to wake up the second receiver of the second terminal device based on the wake-up signal received by the first receiver of the second terminal device.

[0053] In a possible implementation, the wake-up signal is used to wake up at least one user group, and a second terminal device in the at least one user group listens to scheduling information of the next scheduling in the same search space.

[0054] In a possible implementation, the first information is further used to indicate a new transmission type and / or a retransmission type; wherein the new transmission type is used to indicate: the NDI of the new data indicated in the last scheduling is 0, and the NDI of the next scheduling is 1; or, the NDI of the new data indicated in the last scheduling is 1, and the NDI of the next scheduling is 0;

[0055] or,

[0056] The retransmission type is used to indicate: the NDI of the new data indicated in the last scheduling is 0, and the NDI of the next scheduling is 0; or, the NDI of the new data indicated in the last scheduling is 1, and the NDI of the next scheduling is 1.

[0057] In a possible implementation, the first information is also used to indicate an identifier of the process.

[0058] It should be noted that the specific implementation methods and beneficial effects of this aspect are similar to some implementation methods in the first aspect above. Please refer to the specific implementation methods and beneficial effects of the first aspect for details, and no further details will be given here.

[0059] In a fourth aspect, an embodiment of the present application provides a communication device, which may be a terminal device in the aforementioned embodiment, or a chip within the terminal device. The communication device may include a processing module and a transceiver module. When the communication device is a terminal device, the processing module may be a processor, and the transceiver module may be a transceiver. The terminal device may also include a storage module, which may be a memory. The storage module is used to store instructions, and the processing module executes the instructions stored in the storage module to cause the terminal device to perform the method in the first aspect or any of the embodiments of the first aspect; or, to perform the method in the third aspect or any of the embodiments of the third aspect. When the communication device is a chip within the terminal device, the processing module may be a processor, and the transceiver module may be an input / output interface, pin, or circuit, etc.; the processing module executes the instructions stored in the storage module to cause the terminal device to perform the method in the first aspect or any of the embodiments of the first aspect; or, to perform the method in the third aspect or any of the embodiments of the third aspect. The storage module may be a storage module within the chip (e.g., a register, cache, etc.), or a storage module within the terminal device located outside the chip (e.g., a read-only memory, random access memory, etc.).

[0060] In a fifth aspect, embodiments of the present application provide a communication device, which may be the access network device described in the aforementioned embodiments, or a chip within the access network device. The communication device may include a processing module and a transceiver module. When the communication device is an access network device, the processing module may be a processor, and the transceiver module may be a transceiver. The access network device may further include a storage module, which may be a memory. The storage module is configured to store instructions, and the processing module executes the instructions stored in the storage module to cause the first access network device to perform the method described in the second aspect or any one of the embodiments of the second aspect. When the communication device is a chip within the access network device, the processing module may be a processor, and the transceiver module may be an input / output interface, pin, or circuit, etc. The processing module executes the instructions stored in the storage module to cause the first access network device to perform the method described in the second aspect or any one of the embodiments of the second aspect. The storage module may be a storage module within the chip (e.g., a register, a cache, etc.), or a storage module within the access network device located external to the chip (e.g., a read-only memory, a random access memory, etc.).

[0061] In a sixth aspect, the present application provides a communication device, which may be an integrated circuit chip. The integrated circuit chip includes a processor. The processor is coupled to a memory, which is configured to store programs or instructions. When the program or instructions are executed by the processor, the communication device performs the method described in any of the embodiments of the aforementioned aspects.

[0062] Seventhly, an embodiment of the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the method described in any one of the aforementioned embodiments.

[0063] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium comprising instructions, which, when executed on a computer, enable the computer to execute a method as described in any one of the embodiments in the foregoing aspects.

[0064] In the ninth aspect, an embodiment of the present application provides a communication system, which includes a terminal device that executes the aforementioned first aspect and any one of the embodiments of the first aspect, and a first access network device that executes the aforementioned second aspect and any one of the embodiments of the second aspect; or, the communication system includes a terminal device that executes the aforementioned first aspect and any one of the embodiments of the first aspect, and a first terminal device that executes the aforementioned third aspect and any one of the embodiments of the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] FIG1A is an example diagram of a communication system to which the wake-up method provided in this application is applicable;

[0066] FIG1B is an example diagram of a receiver structure of a terminal device in this application;

[0067] FIG1C is an example diagram showing a terminal device waking up an auxiliary link based on a wake-up signal in an MBS scenario in conventional technology;

[0068] FIG2 is a flowchart of the wake-up method provided by the present application;

[0069] FIG3A is an example diagram of a terminal device waking up an auxiliary link based on a wake-up signal in an MBS scenario of the present application;

[0070] FIG3B is another example diagram of a terminal device waking up a secondary link based on a wake-up signal in an MBS scenario of the present application;

[0071] FIG3C is another example diagram of a terminal device waking up an auxiliary link based on a wake-up signal in an MBS scenario of the present application;

[0072] FIG4 is a schematic diagram of an embodiment of a communication device provided by the present application;

[0073] FIG5 is a schematic diagram of another embodiment of a communication device provided by the present application;

[0074] FIG6 is a schematic diagram of another embodiment of a communication device provided in this application. DETAILED DESCRIPTION

[0075] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0076] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0077] The terms "first," "second," "third," "fourth," and the like (if any) in the specification and claims of this application and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0078] It should be understood that the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be single or multiple. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship. In addition, "at least one of the following" or similar expressions in this article is used to represent any combination of the listed items; for example, at least one of A, B and (or) C can represent the following six situations: A exists alone, B exists alone, C exists alone, A and B exist at the same time, B and C exist at the same time, A and C exist at the same time, and A, B and C exist at the same time, where A, B, and C can be single or multiple.

[0079] For ease of understanding, the following first introduces the system architecture and application scenarios applicable to the wake-up method proposed in this application:

[0080] The wake-up method proposed in this application can be applied to 5G NR (5G New Radio) systems, the 6th generation mobile communication technology (6G) systems and subsequent evolutionary standards. As shown in Figure 1A, the communication system includes at least a terminal device. Optionally, the communication system also includes an access network device. For example, taking cellular network communication as an example, the communication system mainly includes a terminal device and an access network device. For another example, taking short-range communication (proximity communication, PC5) as an example, the communication system mainly includes a terminal device.

[0081] Among them, the terminal device includes a device that provides voice and / or data connectivity to the user. For example, it may include a handheld device with wireless connection function or a processing device connected to a wireless modem. In cellular network communications, the terminal device can communicate with the radio access network (RAN) through the Uu interface, and communicate with the core network (for example, the 5G core network (5th generation core, 5GC)) through the RAN. Optionally, in the PC5 communication scenario, the terminal device supports a direct communication interface (i.e., the PC5 interface) and can communicate with other terminal devices that support the PC5 interface through the PC5 interface. It should be understood that the terminal device may also be referred to as a terminal, user equipment (UE), wireless terminal device, mobile terminal (MT) device, subscriber unit, subscriber station, mobile station (MS), mobile, remote station, access point (AP), remote terminal device, access terminal device, user terminal device, user agent, or user device, etc. In addition, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) device, an augmented reality (AR) device, or an extended reality (XR) service terminal. In addition, the terminal device may also be an Internet of Things (IoT) terminal, for example, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. In this embodiment and subsequent embodiments, the terminal device is used as an example for description.

[0082] It should be noted that, as shown in FIG1B , the terminal device involved in the present application has at least two receivers, wherein the operating power of one receiver is less than the operating power of the other receiver. Generally, the receiver with a larger operating power is called a main receiver (also called a main link), and the receiver with a smaller operating power is called an auxiliary receiver (also called a low-power receiver, a low-power wake-up signal receiver (LP-WUS receiver, LP-WUR) or an auxiliary link). Among them, the main receiver is similar to the receiver of a traditional terminal device, and is mainly used to receive signals used in existing networks. For example, monitoring PDCCH, receiving downlink control information DCI and other downlink scheduling information. The state of the main receiver may include an on state, an off state, and different degrees of sleep state (for example, a deep sleep state, an ultra-deep sleep state). The energy and / or time required to switch to the on state in different states are generally different. Compared to the primary receiver, the secondary receiver has lower complexity, lower power consumption, and lower processing capabilities (e.g., demodulation, computing, etc.). It is used to receive the newly designed low-power wake-up signal (LP-WUS), or low-power synchronization signal (LP-SS), or low-power reference signal. Optionally, the secondary receiver may also receive some traditional signals (e.g., synchronization signal block (SSB) for measurement, etc.). In this application, only the secondary receiver receiving the wake-up signal and the primary receiver receiving the DCI are used as an example.

[0083] Furthermore, an access network device can be any device with wireless transceiver capabilities and can be responsible for air interface-related functions, such as radio link maintenance, radio resource management, and some mobility management functions. Furthermore, the access network device can be configured with a baseband unit (BBU) that performs baseband signal processing. Exemplarily, the access network device can be the radio access network (RAN) currently providing services to the terminal device. Currently, some common examples of access network equipment include: Node B (NB), evolved Node B (eNB or eNodeB), next generation Node B (gNB) in 5G new radio (NR) systems, nodes in 6G systems (e.g., xNodeB), transmission reception point (TRP), radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved NodeB or home NodeB (HNB)), etc. In addition, in network structures such as cloud radio access network (CloudRAN) or open radio access network (ORAN), access network equipment may include at least one of a centralized unit (CU) (also known as a control unit), a distributed unit (DU), and a radio unit (RU). The RAN equipment, including the CU and DU, splits the protocol layers of the gNB in ​​the NR system. Some protocol layer functions are centrally controlled by the CU, while some or all of the remaining protocol layer functions are distributed in the DU, which is then centrally controlled by the CU. Furthermore, in IoT scenarios, access network devices can also be devices that read and write tags, i.e., reader / writer devices. In this and subsequent embodiments, access network devices are used as examples.

[0084] In addition, the wake-up method proposed in the present application is applied to the multicast and broadcast service (MBS) scenario, which mainly refers to a service for multiple terminal devices. For example, live broadcast service, public safety service, batch software update service, etc., are not limited by this application. As shown in Figure 1A, in the MBS scenario, the wake-up signal sent by the access network device is used to wake up a user group (for example, a user group transmitting the same MBS service) (for example, a user group including terminal device 1, terminal device 2 and terminal device 3). After receiving the wake-up signal, the auxiliary receiver of each terminal device in the user group wakes up the main receiver based on the wake-up signal. Then, the main receiver of each terminal device monitors the PDCCH at the same time-frequency position (for example, the same search space (SearchSpace)) to receive DCI. The new data indicator (NDI) field contained in the DCI can indicate whether this scheduling is a new transmission scheduling or a retransmission scheduling. However, as shown in Figure 1C, the terminal devices in the user group that have successfully received the last scheduled message (for example, terminal device 1) do not need to receive the next retransmission schedule, and therefore, there is no need for them to be woken up to receive DCI. Therefore, these terminal devices generate unnecessary energy consumption, affecting energy conservation.

[0085] In this regard, the present application provides a wake-up method and a communication device for indicating in advance through a wake-up signal whether the next scheduling indicates a new transmission scheduling or a retransmission scheduling, so that the terminal device that does not need to receive the next scheduling remains in sleep mode and is not woken up, thereby saving energy consumption of the terminal device.

[0086] The main process of the wake-up method provided by the present application is introduced below in conjunction with Figure 2. The wake-up method can be performed by a terminal device and a network device (for example, an access network device), or it can be performed by components of the terminal device and the network device (for example, an access network device) (for example, a processor, a chip, or a chip system). The following is an example of the implementation by the terminal device and the access network device. As shown in Figure 2, the communication method includes the following steps:

[0087] Step 201: A terminal device receives a wake-up signal via a first receiver. Accordingly, an access network device sends a wake-up signal; or another terminal device sends a wake-up signal.

[0088] Among them, the first receiver is one of the at least two receivers of the terminal device. Optionally, the first receiver is the receiver with smaller working power among the at least two receivers of the terminal device. In contrast, the terminal device also includes at least one receiver with larger working power (hereinafter referred to as the second receiver), that is, the working power of the first receiver is less than the working power of the second receiver. Among them, the first receiver can be an auxiliary receiver (also called a low-power receiver, a low-power wake-up signal receiver (LP-WUS receiver, LP-WUR) or an auxiliary link); the second receiver can be a main receiver (main receiver) (also called a main link), which is not limited in this application. For the relevant introduction of the main receiver and the auxiliary receiver, please refer to the relevant description corresponding to Figure 1B above, which will not be repeated here.

[0089] In addition, the aforementioned wake-up signal can come from an access network device or from another terminal device. For example, in cellular network communication, the wake-up signal is generated by the access network device, and the terminal device receives the wake-up signal from the access network device via the first receiver. For another example, in short-range communication PC5, the wake-up signal is generated by another terminal device, and the terminal device in this step receives the wake-up signal from the other terminal device via the first receiver. In this embodiment and subsequent embodiments, the wake-up signal is described as coming from the access network device.

[0090] In addition, the wake-up signal includes first information, which is used to indicate whether there is a new transmission and / or whether there is a retransmission in the next scheduling (next schedule), that is, the first information is used to indicate the new transmission and / or retransmission indicated by the DCI of the next scheduling. Among them, the new transmission, that is, the transport block (transport block, TB) of the new transmission, which is different from the TB of the last scheduled transmission; the retransmission, that is, the retransmitted TB, which is the same as the TB of the last scheduled transmission. It should be understood that "last scheduling" and "next scheduling" are two adjacent schedules in the time domain. In the process of the terminal device receiving the wake-up signal, the last scheduling is the TB that the terminal device has successfully received or unsuccessfully received, and the next scheduling is the TB to be sent by the access network device, that is, the TB to be monitored or received by the terminal device.

[0091] Optionally, the first information can be represented by at least two bits newly added to the wake-up signal, at least one of the at least two bits is used to indicate whether there is a new transmission, and at least one other bit of the at least two bits is used to indicate whether there is a retransmission.

[0092] In one example, two bits are added to the wake-up signal to represent the first information. Among them, the first bit indicates whether there is a new transmission in the next scheduling, and the second bit indicates whether there is a retransmission in the next scheduling. Taking "1" for existence and "0" for non-existence as an example, "00" means that there is no new transmission and no retransmission in the next scheduling, "01" means that there is no new transmission and there is a retransmission in the next scheduling, "10" means that there is a new transmission and no retransmission in the next scheduling, and "11" means that there is a new transmission and there is a retransmission in the next scheduling. It should be understood that "1" can also be used to indicate non-existence and "0" to indicate existence, which will not be elaborated here. In addition, the first bit of the two newly added bits can also indicate whether there is a retransmission, and the second bit can indicate whether there is a new transmission, which will not be elaborated here.

[0093] Optionally, the wake-up signal is used to wake up at least one user group. Among them, a user group includes at least one terminal device, and the terminal devices of a user group have the same group identifier. Optionally, the group identifier is a radio network temporary identifier (RNTI) newly defined by MBS. For example, the group identifier is a group radio network temporary identifier (Group RNTI, G-RNTI) or a group configured scheduling (G-CS-RNTI), which is not limited in this application. Optionally, the terminal devices in at least one user group listen to the scheduling information of the next scheduling in the same search space. It can be understood that the indication granularity of the wake-up signal is the same as the indication granularity of the search space of DCI, that is, the terminal device that can be awakened by the wake-up signal can monitor PDCCH in the same search space to receive DCI.

[0094] In one example, the wake-up signal is scrambled using a group identifier (e.g., the group identifier of the first user group), and the terminal devices in the first user group receive the same wake-up signal and descramble the wake-up signal using the group identifier of the first user group to obtain the first information. The terminal devices in the first user group are configured with the same search space. For example, if the terminal devices in the first user group are awakened and can monitor the next scheduled DCI in the same search space,

[0095] In another example, the wake-up signal is used to wake up multiple user groups, which may have different group identifiers. For example, user groups with different G-RNTIs within the same cell may all be configured to monitor DCI in the same search space. In this case, the wake-up signal may be a cell-level signal, indicating whether each terminal device within a cell containing multiple user groups should wake up its respective second receiver.

[0096] Step 202: The terminal device determines whether to wake up a second receiver of the terminal device based on the first information, wherein the operating power of the second receiver is greater than the operating power of the first receiver.

[0097] For further information about the first receiver and the second receiver, please refer to step 201 above and will not be repeated here. Furthermore, the second receiver is configured to monitor the PDCCH and receive DCI. For example, if the second receiver of the terminal device is awakened, the terminal device can monitor the physical downlink control channel (PDCCH) in the search space corresponding to the first user group via the second receiver and receive downlink control information (DCI), which includes scheduled retransmission information and / or new transmission information.

[0098] Specifically, the terminal device determines whether to wake up the second receiver of the terminal device based on the reception status of the last scheduling and the first information. The following are introduced respectively:

[0099] In one implementation, if the terminal device successfully receives the last scheduling, and the first information indicates that there is no new transmission in the next scheduling, the terminal device does not wake up the second receiver. Optionally, the first information may indicate that there is no new transmission and no retransmission in the next scheduling, or the first information may indicate that there is no new transmission and no retransmission in the next scheduling.

[0100] In one example, if the terminal device successfully receives the last schedule, and the first information indicates that there is no new transmission and no retransmission in the next schedule, the terminal device does not wake up the second receiver. In another example, if the terminal device successfully receives the last schedule, and the first information indicates that there is no new transmission and there is a retransmission in the next schedule, the terminal device does not wake up the second receiver.

[0101] For example, taking the first information as two newly added bits in the wake-up signal as an example, if the first bit indicates whether there is a new transmission in the next scheduling, and the second bit indicates whether there is a retransmission in the next scheduling, "1" indicates yes, and "0" indicates no, then the value and meaning of the first information, and the decision result of whether the terminal device wakes up the second receiver are shown in the following Table 1-1:

[0102] Table 1-1

[0103] As shown in Table 1-1, since the terminal device has successfully received the last scheduled message, it expects to receive a new transmission in the next scheduled message and does not need to receive a retransmission. Therefore, when the first information indicates that there will be no new transmission in the next scheduled message (regardless of whether there is a retransmission), the terminal device does not wake up the second receiver, which helps save energy consumption of the terminal device.

[0104] In another implementation, if the terminal device successfully receives the last scheduling, and the first information indicates that there is a new transmission in the next scheduling, the terminal device wakes up the second receiver. Optionally, the first information may indicate that there is a new transmission and a retransmission in the next scheduling, or the first information may indicate that there is a new transmission and no retransmission in the next scheduling.

[0105] In one example, if the terminal device successfully receives the last schedule, and the first information indicates that there is a new transmission and a retransmission in the next schedule, the terminal device wakes up the second receiver. In another example, if the terminal device successfully receives the last schedule, and the first information indicates that there is a new transmission and no retransmission in the next schedule, the terminal device wakes up the second receiver.

[0106] For example, taking the first information as two newly added bits in the wake-up signal as an example, if the first bit indicates whether there is a new transmission in the next scheduling, and the second bit indicates whether there is a retransmission in the next scheduling, "1" indicates existence, and "0" indicates non-existence, then the value and meaning of the first information, and the decision result of whether the terminal device wakes up the second receiver are shown in the following Table 1-2:

[0107] Table 1-2

[0108] As shown in Table 1-2, since the terminal device has successfully received the last scheduling, the terminal device expects to receive a new transmission in the next scheduling. Therefore, when the first information indicates that there is a new transmission in the next scheduling, the terminal device may not care whether there is a retransmission in the next scheduling. The terminal device is more inclined to wake up the second receiver, which is beneficial to ensure that the second receiver of the terminal device can receive the new transmission of the terminal device when it wakes up, reducing the meaningless wake-up of the second receiver of the terminal device, and helping to save energy consumption of the terminal device.

[0109] In another implementation, if the terminal device fails to successfully receive the last scheduling, and the first information indicates that there is no new transmission and no retransmission in the next scheduling, the terminal device does not wake up the second receiver.

[0110] For example, taking the first information as two newly added bits in the wake-up signal as an example, if the first bit indicates whether there is a new transmission in the next scheduling, and the second bit indicates whether there is a retransmission in the next scheduling, "1" indicates existence, and "0" indicates non-existence, then the value and meaning of the first information, and the decision result of whether the terminal device wakes up the second receiver are shown in the following Table 1-3:

[0111] Table 1-3

[0112] As shown in Table 1-3, since the terminal device did not successfully receive the last scheduling, the terminal device expects to receive the retransmission that was not successfully received in the last scheduling in the next scheduling, or the terminal device is awakened to receive other new transmissions. Therefore, when the first information indicates that there is neither a new transmission nor a retransmission in the next scheduling, the terminal device does not wake up the second receiver, reducing the meaningless wake-up of the second receiver of the terminal device, which is beneficial to saving energy consumption of the terminal device.

[0113] In another implementation, if the terminal device fails to successfully receive the last scheduling, and the first information indicates that there is a new transmission and / or a retransmission in the next scheduling, the terminal device wakes up the second receiver.

[0114] In one example, the first information indicates that there is a new transmission in the next scheduling. Optionally, the first information indicates that there is a new transmission and a retransmission in the next scheduling, or the first information indicates that there is a new transmission and no retransmission in the next scheduling.

[0115] In another example, the first information indicates that there is a retransmission in the next scheduling. Optionally, the first information indicates that there is a new transmission and a retransmission in the next scheduling, or the first information indicates that there is no new transmission and a retransmission in the next scheduling.

[0116] For example, taking the first information as two newly added bits in the wake-up signal as an example, if the first bit indicates whether there is a new transmission in the next scheduling, and the second bit indicates whether there is a retransmission in the next scheduling, "1" indicates existence, and "0" indicates non-existence, then the value and meaning of the first information, and the decision result of whether the terminal device wakes up the second receiver are shown in the following Table 1-4:

[0117] Table 1-4

[0118] As shown in Table 1-4, since the terminal device did not successfully receive the last scheduling, the terminal device expects to receive the retransmission that was not successfully received in the last scheduling in the next scheduling, or the terminal device is awakened to receive other new transmissions. Therefore, when the first information indicates that there is a new transmission and / or a retransmission in the next scheduling, the terminal device wakes up the second receiver to monitor the new transmission and / or retransmission in the next scheduling, which is beneficial to improve the probability of the terminal device successfully receiving the next scheduling while saving the energy consumption of the terminal device, thereby improving the data transmission efficiency.

[0119] Optionally, the terminal device can generate feedback information when receiving the last scheduling, and the feedback information is used to indicate whether the last scheduling was successfully received. Optionally, the feedback information includes an acknowledgement (ACK) and a negative acknowledgement (NACK). Among them, ACK indicates that the last scheduling was successfully received, and NACK indicates that the last scheduling was not successfully received. The feedback information can be information that the terminal device has fed back to the access network device or another terminal device, or it can be information that the terminal device has generated to be fed back to the access network device or another terminal device, and this application is not limited.

[0120] Optionally, the terminal device determines whether to wake up the second receiver of the terminal device based on the first information, which can also be understood as the terminal device determining whether to wake up the second receiver of the terminal device based on the feedback information and the first information. The following are introduced respectively:

[0121] In one possible implementation, if the feedback information indicates that the last scheduling was successfully received, and the first information indicates that there is no new transmission in the next scheduling, the terminal device does not wake up the second receiver.

[0122] In another possible implementation, if the feedback information indicates that the last scheduling was successfully received, and the first information indicates that there is a new transmission in the next scheduling, the terminal device wakes up the second receiver.

[0123] In another possible implementation, if the feedback information indicates that the last scheduling was not successfully received, and the first information indicates that there is no new transmission and no retransmission in the next scheduling, the terminal device does not wake up the second receiver.

[0124] In another possible implementation, if the feedback information indicates that the last scheduling was not successfully received, and the first information indicates that there is a new transmission and / or a retransmission in the next scheduling, the terminal device wakes up the second receiver.

[0125] For relevant examples and beneficial effects of the aforementioned various implementation methods, please refer to Tables 1-1, 1-2, 1-3 and 1-4 above, which will not be repeated here.

[0126] For example, as shown in FIG3A , a user group includes UE1, UE2, and UE3, wherein UE1 successfully receives the last scheduling, while UE2 and UE3 fail to receive the last scheduling. If the first information in the wake-up signal indicates that there is no new transmission and there is retransmission, UE2 and UE3 in the user group wake up the second receiver to listen to DCI in the search space, while UE1 does not wake up the second receiver to save energy. It can be seen that this embodiment enables the terminal device that needs to listen to DCI in the MBS scenario to wake up the second receiver, while the terminal device that does not need to listen to DCI does not wake up the second receiver. This is beneficial to saving energy consumption of some terminal devices in the user group while ensuring data transmission of some terminal devices.

[0127] Furthermore, the first information may also indicate the type of new transmission and / or the type of retransmission.

[0128] The protocol also defines a new data indicator (NDI) field in the DCI, which takes a value of 0 or 1. The sender indicates to the receiver whether the current transmission (i.e., the transmission indicated by the DCI) is a new transmission or a retransmission by whether the NDI value is flipped. If the NDI value of the next scheduled transmission is the opposite of the NDI value of the previous transmission (i.e., the NDI value is flipped), it indicates that the data of the next transmission is new transmission data; if the NDI value of the next scheduling is the same as the NDI value of the previous scheduling, it indicates that the data of the next scheduling is retransmission data. Therefore, the types of new transmission include 0-1 new transmission (i.e., the NDI value of the previous scheduling is 0, and the NDI value of the next scheduling is 1) and 1-0 new transmission (i.e., the NDI value of the previous scheduling is 1, and the NDI value of the next scheduling is 0); the types of retransmission include 0-0 retransmission (i.e., the NDI value of the previous scheduling is 0, and the NDI value of the next scheduling is 0) and 1-1 retransmission (i.e., the NDI value of the previous scheduling is 1, and the NDI value of the next scheduling is 1).

[0129] Optionally, the first information may also indicate whether there is a new process. The new process refers to the transmission of the process that does not exist in the terminal device, and the TB about the process in the next scheduling is the first transmission. In some scenarios, the new process can be understood as one of the types of new transmissions, that is, the types of new transmissions include new transmissions from 0 to 1 (that is, the NDI of the last scheduling is 0, and the NDI of the next scheduling is 1), new transmissions from 1 to 0 (that is, the NDI of the last scheduling is 1, and the NDI of the next scheduling is 0) and new processes. It should be understood that in the examples of the first information below, if the first information does not explicitly indicate whether there is a new process, it is assumed that there is no new process in the scheduling introduced in the example, or it is indicated by other means whether there is a new process. Several types of implementation methods of the first information are introduced below:

[0130] In one type of implementation, the first information not only indicates whether there is a new transmission, but also indicates whether there is a new transmission of what type.

[0131] In one possible implementation, if the terminal device successfully receives the last scheduling, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling successfully received by the terminal device is the same as the NDI of the last scheduling indicated by the type of the new transmission, the terminal device wakes up the second receiver.

[0132] The last scheduled NDI successfully received by the terminal device refers to the NDI obtained by the terminal device from the last scheduled DCI received. For example, the NDI included in the DCI received by the second receiver of the terminal device when it was last awakened. Optionally, the value of the last scheduled NDI successfully received by the terminal device may be 0 or 1.

[0133] The NDI of the last scheduling indicated by the new transmission type refers to the NDI determined by the terminal device from the new transmission type indicated by the first information received. Optionally, if the new transmission type is a new transmission of 0 to 1 (i.e., the NDI of the last scheduling is 0, and the NDI of the next scheduling is 1), then the NDI of the last scheduling indicated by the new transmission type is 0; if the new transmission is 1 to 0 (i.e., the NDI of the last scheduling is 1, and the NDI of the next scheduling is 0), then the NDI of the last scheduling indicated by the new transmission type is 1.

[0134] For example, if the value of the NDI of the last scheduling of the terminal device is 0 or 1, the value of the NDI of the last scheduling indicated by the newly transmitted type is 0 or 1, and the terminal device successfully receives the last scheduling, then an example of triggering the terminal device to wake up the second receiver is shown in Table 2-1 below:

[0135] Table 2-1

[0136] In one example, the first information indicates that there is a new transmission of 0 to 1 (i.e., the NDI of the last scheduling is 0, and the NDI of the next scheduling is 1), that is, the NDI of the last scheduling indicated by the type of the new transmission is 0. If the terminal device successfully receives the last scheduling, and the value of the NDI obtained by the terminal device from the DCI of the last scheduling is 0, the terminal device wakes up the second receiver.

[0137] In this example, if the terminal device successfully receives the last scheduling and the value of NDI in the DCI of the last scheduling is 0, the terminal device will feedback ACK to the access network device, and the terminal device expects to receive a new transmission of 0 to 1 in the next scheduling. For example, after receiving the ACK about the last scheduling fed back by the terminal device, the access network device flips the NDI=0 of the last scheduling to the NDI=1 of the next scheduling, that is, the access network device will send a new transmission of 0 to 1 in the DCI of the next scheduling, that is, the access network device indicates in the first information that there is a new transmission of 0 to 1 in the next scheduling. Therefore, when the first information indicates that there is a new transmission of 0 to 1, the terminal device can determine that the NDI of the last scheduling successfully received is the same as the NDI of the last scheduling indicated by the type of the new transmission based on the NDI value of the last scheduling (that is, 0) and the type of the new transmission of 0 to 1 (that is, the NDI of the last scheduling is 0, and the NDI of the next scheduling is 1), and then the terminal device triggers the wake-up of the second receiver.

[0138] In another example, the first information indicates that there is a new transmission of 1 to 0 (i.e., the NDI of the last scheduling is 1, and the NDI of the next scheduling is 0), that is, the NDI of the last scheduling indicated by the type of the new transmission is 1. If the terminal device successfully receives the last scheduling, and the value of the NDI obtained by the terminal device from the DCI of the last scheduling is 1, the terminal device wakes up the second receiver.

[0139] In this example, if the terminal device successfully receives the last scheduling and the value of NDI in the DCI of the last scheduling is 1, the terminal device will feedback ACK to the access network device, and the terminal device expects to receive a new transmission of 1 to 0 in the next scheduling. For example, after receiving the ACK about the last scheduling fed back by the terminal device, the access network device flips the NDI=1 of the last scheduling to the NDI=0 of the next scheduling, that is, the access network device will send a new transmission of 1 to 0 in the DCI of the next scheduling, that is, the access network device indicates in the first information that there is a new transmission of 1 to 0 in the next scheduling. Therefore, when the first information indicates that there is a new transmission of 1 to 0, the terminal device can determine that the NDI of the last scheduling successfully received is the same as the NDI of the last scheduling indicated by the type of the new transmission based on the NDI value of the last scheduling (that is, 1) and the type of the new transmission of 1 to 0 (that is, the NDI of the last scheduling is 1, and the NDI of the next scheduling is 0), and then the terminal device triggers the wake-up of the second receiver.

[0140] In this embodiment, when the terminal device has successfully received the last scheduling and the first information indicates that there is a new transmission that the terminal device expects to receive in the next scheduling (that is, the NDI of the last scheduling successfully received is the same as the NDI of the last scheduling indicated by the type of the new transmission), the terminal device triggers to wake up the second receiver, which is beneficial to ensure that the new transmission that the terminal device expects to receive is not missed, thereby improving the reliability of data transmission.

[0141] In another possible implementation, if the terminal device successfully receives the last scheduling, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling successfully received by the terminal device is different from the NDI of the last scheduling indicated by the type of the new transmission, the terminal device does not wake up the second receiver.

[0142] Among them, for the introduction of the last scheduled NDI successfully received by the terminal device and the introduction of the last scheduled NDI indicated by the new transmission type, please refer to the aforementioned implementation method and will not be repeated here.

[0143] For example, if the value of the NDI of the last scheduling of the terminal device is 0 or 1, the value of the NDI of the last scheduling indicated by the newly transmitted type is 0 or 1, and the terminal device successfully receives the last scheduling, then the example of the terminal device not waking up the second receiver is shown in the following Table 2-2:

[0144] Table 2-2

[0145] In one example, the first information indicates that there is a new transmission of 1 to 0 (i.e., the NDI of the last scheduling is 1, and the NDI of the next scheduling is 0), that is, the NDI of the last scheduling indicated by the type of the new transmission is 1. If the terminal device successfully receives the last scheduling, and the value of the NDI obtained by the terminal device from the DCI of the last scheduling is 0, the terminal device does not wake up the second receiver.

[0146] In this example, if the terminal device successfully receives the last scheduling and the value of NDI in the DCI of the last scheduling is 0, the terminal device will feedback ACK to the access network device, and the terminal device expects to receive a new transmission of 0 to 1 in the next scheduling, rather than other types of new transmissions. Therefore, when the first information indicates that there is a new transmission of 1 to 0 instead of a new transmission of 0 to 1, the terminal device determines that the NDI of the last scheduling successfully received is different from the NDI of the last scheduling indicated by the type of new transmission based on the NDI value of the last scheduling (i.e. 0) and the type of the new transmission of 1 to 0 (i.e. the NDI of the last scheduling is 1, and the NDI of the next scheduling is 0), and thus the terminal device does not wake up the second receiver.

[0147] In another example, the first information indicates that there is a new transmission of 0 to 1 (i.e., the NDI of the last scheduling is 0, and the NDI of the next scheduling is 1), that is, the NDI of the last scheduling indicated by the new transmission type is 0. If the terminal device successfully receives the last scheduling, and the value of the NDI obtained by the terminal device from the DCI of the last scheduling is 1, the terminal device does not wake up the second receiver.

[0148] In this example, if the terminal device successfully receives the last scheduling and the value of NDI in the DCI of the last scheduling is 1, the terminal device will feedback ACK to the access network device, and the terminal device expects to receive a new transmission of 1 to 0 in the next scheduling, rather than other types of new transmissions. Therefore, when the first information indicates that there is a new transmission of 0 to 1 instead of a new transmission of 1 to 0, the terminal device determines that the NDI of the last scheduling successfully received is different from the NDI of the last scheduling indicated by the type of new transmission based on the NDI value of the last scheduling (i.e. 1) and the type of the new transmission of 0 to 1 (i.e. the NDI of the last scheduling is 0, and the NDI of the next scheduling is 1), and thus the terminal device does not wake up the second receiver.

[0149] In this embodiment, when the terminal device has successfully received the last scheduling, and the first information indicates that there is a new transmission in the next scheduling that the terminal device does not expect to receive (that is, the NDI of the last scheduling that was successfully received is different from the NDI of the last scheduling indicated by the type of the new transmission), the terminal device does not trigger the awakening of the second receiver. For example, the NDI of the last scheduling = 0 and the terminal device successfully receives the last scheduling, the terminal device does not need to monitor the new transmission with NDI of 1 to 0, or the NDI of the last scheduling = 1 and the terminal device successfully receives the last scheduling, the terminal device does not need to monitor the new transmission with NDI of 0 to 1. Therefore, it is possible to reduce the situation where the terminal device is awakened by the new transmission that is not expected to be received, which is beneficial to saving energy consumption of the terminal device.

[0150] In another possible implementation, if the terminal device fails to successfully receive the last scheduling, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling that the terminal device fails to successfully receive is the same as the NDI of the last scheduling indicated by the type of the new transmission, then the terminal device wakes up the second receiver.

[0151] For example, if the value of the NDI of the last scheduling of the terminal device is 0 or 1, the value of the NDI of the last scheduling indicated by the newly transmitted type is 0 or 1, and the terminal device fails to successfully receive the last scheduling, then the example of the terminal device waking up the second receiver is shown in Table 2-3 below:

[0152] Table 2-3

[0153] In one example, the first information indicates that there is a new transmission of 0 to 1 (i.e., the NDI of the last scheduling is 0, and the NDI of the next scheduling is 1), that is, the NDI of the last scheduling indicated by the type of the new transmission is 0. If the terminal device does not successfully receive the last scheduling, and the value of the NDI obtained by the terminal device from the DCI of the last scheduling is 0, the terminal device wakes up the second receiver.

[0154] In this example, if the terminal device fails to successfully receive the last scheduling and the value of NDI in the last scheduled DCI is 0, the terminal device will feedback NACK to the access network device, and the terminal device expects to receive a retransmission of 0~0 for the next scheduling. However, the terminal device does not expect to miss the new transmission of 0~1. Therefore, when the first information indicates that there is a new transmission of 0~1, the terminal device can determine that the NDI of the last scheduling that was not successfully received is the same as the NDI of the last scheduling indicated by the type of the new transmission based on the NDI value of the last scheduling (i.e. 0) and the type of the new transmission of 0~1 (i.e. the NDI of the last scheduling is 0, and the NDI of the next scheduling is 1), and then the terminal device triggers the wake-up of the second receiver.

[0155] In another example, the first information indicates that there is a new transmission of 1 to 0 (i.e., the NDI of the last scheduling is 1, and the NDI of the next scheduling is 0), that is, the NDI of the last scheduling indicated by the type of the new transmission is 1. If the terminal device does not successfully receive the last scheduling, and the value of the NDI obtained by the terminal device from the DCI of the last scheduling is 1, the terminal device wakes up the second receiver.

[0156] In this embodiment, when the terminal device fails to successfully receive the last scheduling, and the first information indicates that there is a new transmission that the terminal device expects to receive in the next scheduling (that is, the NDI of the last scheduling that was not successfully received is the same as the NDI of the last scheduling indicated by the type of the new transmission), the terminal device triggers to wake up the second receiver, which is beneficial to ensure that the new transmission that the terminal device expects to receive is not missed, thereby improving the reliability of data transmission.

[0157] In another possible embodiment, if the terminal device fails to successfully receive the last scheduling, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling that the terminal device fails to successfully receive is different from the NDI of the last scheduling indicated by the type of the new transmission, the terminal device does not wake up the second receiver.

[0158] For example, if the value of the NDI of the last scheduling of the terminal device is 0 or 1, the value of the NDI of the last scheduling indicated by the newly transmitted type is 0 or 1, and the terminal device fails to successfully receive the last scheduling, then the example of the terminal device not waking up the second receiver is shown in the following Table 2-4:

[0159] Table 2-4

[0160] In one example, the first information indicates that there is a new transmission of 1 to 0 (i.e., the NDI of the last scheduling is 1, and the NDI of the next scheduling is 0), that is, the NDI of the last scheduling indicated by the type of the new transmission is 1. If the terminal device does not successfully receive the last scheduling, and the value of the NDI obtained by the terminal device from the DCI of the last scheduling is 0, the terminal device does not wake up the second receiver.

[0161] In another example, the first information indicates that there is a new transmission of 0 to 1 (i.e., the NDI of the last scheduling is 0, and the NDI of the next scheduling is 1), that is, the NDI of the last scheduling indicated by the type of the new transmission is 0. If the terminal device does not successfully receive the last scheduling, and the value of the NDI obtained by the terminal device from the DCI of the last scheduling is 1, the terminal device does not wake up the second receiver.

[0162] In this embodiment, when the terminal device fails to successfully receive the last scheduled message, and the first information indicates that the next scheduled message contains a new transmission that the terminal device does not expect to receive (i.e., the NDI of the last scheduled message that was not successfully received is different from the NDI of the last scheduled message indicated by the type of the new transmission), the terminal device does not trigger the awakening of the second receiver. Therefore, it is possible to reduce the number of instances in which the terminal device is awakened by an unexpected new transmission, which helps save energy consumption of the terminal device.

[0163] It should be noted that Tables 2-1 to 2-4 are all examples of the new transmission of the next scheduling indicated by the first information being able to distinguish the new transmission type. Among them, the examples of Tables 2-1 and 2-2 are examples of the first information being able to distinguish the new transmission type when the terminal device can successfully receive the last scheduling; the examples of Tables 2-3 and 2-4 are examples of the first information being able to distinguish the new transmission type when the terminal device does not successfully receive the last scheduling. It can be seen that regardless of whether the terminal device successfully receives the last scheduling, when the NDI of the last scheduling = 0, and the first information indicates that there are 0 to 1 new transmissions (that is, the NDI of the last scheduling is 0, and the NDI of the next scheduling is 1), or when the NDI of the last scheduling = 1, and the first information indicates that there are 1 to 0 new transmissions (that is, the NDI of the last scheduling is 1, and the NDI of the next scheduling is 0), the terminal device wakes up the second receiver to receive the DCI of the next scheduling.

[0164] Exemplarily, as shown in FIG3B , a user group includes UE1, UE2, UE3, and UE4, wherein UE1 and UE3 successfully received the last scheduling, UE2 and UE4 did not successfully receive the last scheduling, the NDI of the last scheduling of UE1 and UE2 was 1, and the NDI of the last scheduling of UE3 and UE4 was 0. If the first information in the wake-up signal indicates the presence of 0 to 1 new transmissions, UE3 and UE4 in the user group wake up the second receiver to monitor the DCI in the search space, while UE1 and UE2 do not wake up the second receiver to save energy consumption. It can be seen that this embodiment enables the terminal device in the MBS scenario to decide whether to wake up the second receiver based on the type of new transmission that needs to be monitored. This is beneficial to saving energy consumption of some terminal devices while ensuring that some terminal devices in the user group do not miss the new transmission scheduled for the next time.

[0165] Optionally, the first information may further indicate whether there is a retransmission in addition to indicating the type of new transmission. After knowing whether the last scheduling was successfully received and the value of the NDI of the last scheduling, the terminal device determines whether to wake up the second receiver based not only on the type of new transmission in the next scheduling, but also on whether there is a retransmission in the next scheduling.

[0166] In one embodiment, if the terminal device determines to wake up the second receiver based on the new transmission type in the next scheduling after knowing whether the last scheduling was successfully received and the value of the NDI in the last scheduling, and / or the terminal device determines to wake up the second receiver based on the retransmission in the next scheduling, then the terminal device finally wakes up the second receiver.

[0167] For example, if the first information is represented by 3 bits, where the first bit of the 3 bits indicates whether there is a new transmission of 0-1, the second bit of the 3 bits indicates whether there is a new transmission of 1-0, and the third bit of the 3 bits indicates whether there is a retransmission, and "1" indicates existence and "0" indicates non-existence, then the first information can be any one of "000", "001", "010", "011", "100", "101", "110", and "111". Tables 3-1, 3-2, 3-3, and 3-4 below respectively list examples when the first information is "111", "011", "101", and "110". The remaining examples are similar and are not repeated here.

[0168] Table 3-1

[0169] In the example shown in Table 3-1, if the terminal device successfully receives the last scheduled message and the NDI value of the last scheduled message successfully received by the terminal device is 0, if the first information indicates that there is a new transmission of 0 to 1, the terminal device expects to wake up the second receiver; if the first information indicates that there is a new transmission of 1 to 0, the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission, the terminal device does not need to wake up the second receiver. Because the terminal device expects to wake up the second receiver when the first information indicates that there is a new transmission of 0 to 1, in order to ensure that the terminal device successfully receives the new transmission of 0 to 1 in the next schedule, the terminal device wakes up the second receiver. If the terminal device successfully receives the last scheduled message and the NDI value of the last scheduled message successfully received by the terminal device is 1, if the first information indicates that there is a new transmission of 0 to 1, the terminal device does not need to wake up the second receiver; if the first information indicates that there is a new transmission of 1 to 0, the terminal device expects to wake up the second receiver; if the first information indicates that there is a retransmission, the terminal device does not need to wake up the second receiver. Since, when the first information indicates that there is a new transmission of 1-0, the terminal device expects to wake up the second receiver, therefore, in order to ensure that the terminal device successfully receives the next scheduled new transmission of 1-0, the terminal device wakes up the second receiver. Other examples are similar and will not be described here in detail.

[0170] Table 3-2

[0171] Table 3-3

[0172] Table 3-4

[0173] In this embodiment, when the terminal device determines to wake up the second receiver based on the type of new transmission to be scheduled next, and / or when the terminal device determines to wake up the second receiver based on the presence of a retransmission to be scheduled next, the terminal device ultimately wakes up the second receiver. This helps ensure that the terminal device can receive specific new transmissions and / or retransmissions in a timely manner, thereby improving transmission reliability.

[0174] In another embodiment, if the terminal device determines not to wake up the second receiver based on whether there is a new transmission type in the next scheduling after knowing whether the last scheduling is successfully received and the value of the NDI of the last scheduling, and the terminal device determines not to wake up the second receiver based on whether there is a retransmission in the next scheduling, then the terminal device ultimately does not wake up the second receiver.

[0175] For example, as shown in Table 3-2, if the terminal device successfully receives the last scheduled message and the NDI value of the last scheduled message successfully received by the terminal device is 0, if the first information indicates that there is no new transmission of 0-1, then the terminal device does not need to wake up the second receiver; if the first information indicates that there is a new transmission of 1-0, then the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission, then the terminal device does not need to wake up the second receiver. Therefore, the terminal device ultimately does not wake up the second receiver.

[0176] For example, as shown in Table 3-3, if the terminal device successfully receives the last scheduled message and the NDI value of the last scheduled message successfully received by the terminal device is 1, if the first information indicates that there is a new transmission of 0-1, then the terminal device does not need to wake up the second receiver; if the first information indicates that there is no new transmission of 1-0, then the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission, then the terminal device does not need to wake up the second receiver. Therefore, the terminal device ultimately does not wake up the second receiver.

[0177] In this embodiment, when the terminal device determines not to wake up the second receiver based on whether a new transmission type exists in the next scheduled transmission, and the terminal device determines not to wake up the second receiver based on whether a retransmission exists in the next scheduled transmission, the terminal device ultimately does not wake up the second receiver. This reduces the number of times the terminal device is woken up by unexpected new transmissions or retransmissions, which helps save power consumption of the terminal device.

[0178] Optionally, the first information may further indicate whether there is a new process, based on indicating what type of new transmission exists and whether there is a retransmission.

[0179] In one example, when the first information indicates that a new process exists, the terminal device may wake up the second receiver without considering the type of the new transmission and whether there is a retransmission to avoid missing the transmission of the new process.

[0180] In another example, when the first information indicates that there is no new process, the terminal device considers the type of the new transmission and whether there is a retransmission before finally determining whether to wake up the second receiver.

[0181] For example, if the first information is represented by 4 bits, wherein the first bit of the 4 bits indicates whether there is a new process, the second bit of the 4 bits indicates whether there is a new transmission of 0 to 1, the third bit of the 4 bits indicates whether there is a new transmission of 1 to 0, and the fourth bit of the 4 bits indicates whether there is a retransmission, and "1" indicates existence and "0" indicates non-existence, then when the first information is "1111", it indicates that there is a new process, a new transmission of 0 to 1, a new transmission of 1 to 0, and a retransmission in the next scheduling; when the first information is "0111", it indicates that there is no new process, a new transmission of 0 to 1, a new transmission of 1 to 0, and a retransmission in the next scheduling. The terminal device's decision on whether to wake up the second receiver is shown in the following Tables 3-5 and 3-6 respectively:

[0182] Table 3-5

[0183] Table 3-6

[0184] In the example shown in Table 3-5, the first bit of the first information indicates the existence of a new process. The terminal device wakes up the second receiver regardless of the type of new transmission and whether there is retransmission to avoid missing the transmission of the new process.

[0185] In the example shown in Table 3-6, the first bit of the first information indicates that no new process exists. Therefore, the terminal device determines whether to wake up the second receiver based on the last three bits of the first information. The implementation of the terminal device determining whether to wake up the second receiver based on the last three bits of the first information is similar to the example shown in Table 3-1 above and is not further described here.

[0186] It should be understood that when the first information is represented by 4 bits, the first information can have 16 values. This embodiment only lists examples of 2 values, and the remaining examples are not repeated.

[0187] In another type of implementation, the first information not only indicates whether there is a retransmission, but also indicates whether there is what type of retransmission.

[0188] In one possible implementation, if the last scheduling is not received successfully, the first information indicates that there will be a retransmission in the next scheduling, and the NDI of the last scheduling that the terminal device did not successfully receive is the same as the NDI of the last scheduling indicated by the retransmission type, then the terminal device wakes up the second receiver.

[0189] Among them, the NDI of the last scheduling that the terminal device did not successfully receive refers to the NDI obtained by the terminal device from the DCI of the last scheduling received. For example, the NDI contained in the DCI received by the second receiver of the terminal device when it was last awakened. Optionally, the value of the NDI of the last scheduling successfully received by the terminal device may be 0 or 1. It should be noted that the terminal device did not successfully receive the last scheduling, which means that the terminal device did not successfully receive the TB transmitted last time. Even if the terminal device did not successfully receive the last scheduling, the terminal device can still receive the DCI of the last scheduling and obtain the NDI.

[0190] The last scheduled NDI indicated by the retransmission type refers to the NDI determined by the terminal device from the retransmission type indicated by the received first information. Optionally, if the retransmission type is 0~0 retransmission (i.e., the last scheduled NDI is 0 and the next scheduled NDI is 0), the last scheduled NDI indicated by the retransmission type is 0; if it is 1~1 retransmission (i.e., the last scheduled NDI is 1 and the next scheduled NDI is 1), the last scheduled NDI indicated by the retransmission type is 1.

[0191] For example, if the value of the NDI of the last scheduling of the terminal device is 0 or 1, the value of the NDI of the last scheduling indicated by the retransmission type is 0 or 1, and the terminal device fails to successfully receive the last scheduling, an example of triggering the terminal device to wake up the second receiver is shown in Table 4-1 below:

[0192] Table 4-1

[0193] In one example, the first information indicates that there is a retransmission of 0 to 0 (i.e., the NDI of the last schedule is 0, and the NDI of the next schedule is 0), that is, the NDI of the last schedule indicated by the retransmission type is 0. If the terminal device fails to successfully receive the last schedule, and the value of the NDI obtained by the terminal device from the DCI of the last schedule is 0, the terminal device wakes up the second receiver.

[0194] In this example, if the terminal device fails to successfully receive the last scheduling and the value of NDI in the last scheduled DCI is 0, the terminal device will feedback NACK to the access network device, and the next scheduling that the terminal device expects to receive is a retransmission of 0~0. For example, after receiving the NACK about the last scheduling fed back by the terminal device, the access network device does not flip the NDI, that is, the access network device will send a retransmission of 0~0 in the next scheduled DCI, that is, the access network device indicates in the first information that there is a retransmission of 0~0 in the next scheduling. Therefore, when the first information indicates that there is a retransmission of 0~0, the terminal device can determine that the NDI of the last scheduling that was not successfully received is the same as the NDI of the last scheduling indicated by the type of retransmission based on the NDI value of the last scheduling (that is, 0) and the type of retransmission of 0~0 (that is, the NDI of the last scheduling is 0, and the NDI of the next scheduling is 0), and then the terminal device triggers the wake-up of the second receiver.

[0195] In another example, the first information indicates that there is a 1-1 retransmission (i.e., the NDI of the last scheduling is 1, and the NDI of the next scheduling is 1), that is, the NDI of the last scheduling indicated by the retransmission type is 1. If the terminal device fails to successfully receive the last scheduling, and the value of the NDI obtained by the terminal device from the DCI of the last scheduling is 1, the terminal device wakes up the second receiver.

[0196] In this example, if the terminal device fails to successfully receive the last scheduling and the value of NDI in the DCI of the last scheduling is 1, the terminal device will feedback NACK to the access network device, and the next scheduling that the terminal device expects to receive is a 1~1 retransmission. For example, after the access network device receives the NACK about the last scheduling fed back by the terminal device, the access network device does not flip the NDI, that is, the access network device will send a 1~1 retransmission in the DCI of the next scheduling, that is, the access network device indicates in the first information that there is a 1~1 retransmission in the next scheduling. Therefore, when the first information indicates that there is a 1~1 retransmission, the terminal device can determine that the successfully received NDI of the last scheduling is the same as the NDI of the last scheduling indicated by the type of retransmission based on the NDI value of the last scheduling (that is, 1) and the type of 1~1 retransmission (that is, the NDI of the last scheduling is 1, and the NDI of the next scheduling is 1), and then the terminal device triggers the wake-up of the second receiver.

[0197] In this embodiment, when the terminal device fails to successfully receive the last scheduling, and the first information indicates that there is a retransmission that the terminal device expects to receive in the next scheduling (that is, the NDI of the last scheduling that was not successfully received is the same as the NDI of the last scheduling indicated by the type of retransmission), the terminal device triggers to wake up the second receiver, which is beneficial to ensure that the retransmission that the terminal device expects to receive is not missed, thereby improving the reliability of data transmission.

[0198] In another possible implementation, if the last scheduling is not successfully received, the first information indicates that there is a retransmission in the next scheduling, and the NDI of the last scheduling that the terminal device did not successfully receive is different from the NDI of the last scheduling indicated by the retransmission type, then the terminal device does not wake up the second receiver. For an introduction to the NDI of the last scheduling that the terminal device did not successfully receive and the NDI of the last scheduling indicated by the retransmission type, please refer to the aforementioned implementation, which will not be repeated here.

[0199] For example, if the value of the NDI of the last scheduling of the terminal device is 0 or 1, the value of the NDI of the last scheduling indicated by the retransmission type is 0 or 1, and the terminal device fails to successfully receive the last scheduling, then the example of the terminal device not waking up the second receiver is shown in the following Table 4-2:

[0200] Table 4-2

[0201] In one example, the first information indicates that there is a 1-1 retransmission (i.e., the NDI of the last scheduling is 1, and the NDI of the next scheduling is 1), that is, the NDI of the last scheduling indicated by the retransmission type is 1. If the terminal device does not successfully receive the last scheduling, and the value of the NDI obtained by the terminal device from the DCI of the last scheduling is 0, the terminal device does not wake up the second receiver.

[0202] In this example, if the terminal device fails to successfully receive the last scheduling and the value of NDI in the last scheduled DCI is 0, the terminal device will feedback NACK to the access network device, and the next scheduling that the terminal device expects to receive is a 0~0 retransmission, rather than other types of retransmissions. Therefore, when the first information indicates that there is a 1~1 retransmission instead of a 0~0 retransmission, the terminal device determines that the NDI of the last scheduling that was not successfully received is different from the NDI of the last scheduling indicated by the type of retransmission based on the NDI value of the last scheduling (i.e. 0) and the type of 1~1 retransmission (i.e. the NDI of the last scheduling is 1, and the NDI of the next scheduling is 1), and thus the terminal device does not wake up the second receiver.

[0203] In another example, the first information indicates that there is a retransmission of 0 to 0 (i.e., the NDI of the last schedule is 0, and the NDI of the next schedule is 0), that is, the NDI of the last schedule indicated by the retransmission type is 0. If the terminal device does not successfully receive the last schedule, and the value of the NDI obtained by the terminal device from the DCI of the last schedule is 1, the terminal device does not wake up the second receiver.

[0204] In this example, if the terminal device fails to successfully receive the last scheduling and the value of the NDI in the last scheduled DCI is 1, the terminal device will feedback NACK to the access network device, and the terminal device expects to receive a 1-1 retransmission in the next scheduling, rather than other types of retransmissions. Therefore, when the first information indicates that there is a 0-0 retransmission instead of a 1-1 retransmission, the terminal device determines that the NDI of the last scheduling that was not successfully received is different from the NDI of the last scheduling indicated by the type of retransmission based on the NDI value of the last scheduling (i.e., 1) and the type of 0-0 retransmission (i.e., the NDI of the last scheduling is 0, and the NDI of the next scheduling is 0), and thus the terminal device does not wake up the second receiver.

[0205] In this embodiment, when the terminal device fails to receive the last scheduling, and the first information indicates that there is a retransmission that the terminal device does not expect to receive in the next scheduling (that is, the NDI of the last scheduling that was not successfully received is different from the NDI of the last scheduling indicated by the type of retransmission), the terminal device does not trigger the awakening of the second receiver. For example, the NDI of the last scheduling = 0 and the terminal device fails to successfully receive the last scheduling, the terminal device does not need to monitor the retransmission with NDI of 1 to 1, or the NDI of the last scheduling = 1 and the terminal device fails to successfully receive the last scheduling, the terminal device does not need to monitor the retransmission with NDI of 0 to 0. Therefore, it is possible to reduce the situation where the terminal device is awakened by the retransmission that is not expected to be received, which is beneficial to saving energy consumption of the terminal device.

[0206] For example, as shown in FIG3C , a user group includes UE1, UE2, UE3, and UE4, wherein UE1 and UE3 successfully receive the last scheduling, UE2 and UE4 fail to receive the last scheduling, the NDI of the last scheduling of UE1 and UE2 is 1, and the NDI of the last scheduling of UE3 and UE4 is 0. If the first information in the wake-up signal indicates the existence of 0~0 retransmissions, UE4 in the user group wakes up the second receiver to monitor the DCI in the search space, while UE1, UE2, and UE3 do not wake up the second receiver to save energy. It can be seen that this embodiment enables the terminal device in the MBS scenario to decide whether to wake up the second receiver based on the type of retransmission that needs to be monitored. This is beneficial to saving energy consumption of some terminal devices while ensuring that some terminal devices in the user group do not miss the retransmission of the next schedule.

[0207] Optionally, the first information may further indicate whether there is a new transmission based on indicating what type of retransmission exists. After knowing whether the last scheduling was successfully received and the value of the NDI of the last scheduling, the terminal device determines whether to wake up the second receiver based not only on the type of retransmission that exists in the next scheduling, but also on whether there is a new transmission in the next scheduling.

[0208] In one embodiment, if the terminal device determines to wake up the second receiver based on the type of retransmission that will exist in the next scheduling after knowing whether the last scheduling was successfully received and the value of the NDI of the last scheduling, and / or the terminal device determines to wake up the second receiver based on the existence of a new transmission in the next scheduling, then the terminal device finally wakes up the second receiver.

[0209] For example, if the first information is represented by 3 bits, where the first bit of the 3 bits indicates whether there is a new transmission, the second bit of the 3 bits indicates whether there is a 0-0 retransmission, and the third bit of the 3 bits indicates whether there is a 1-1 retransmission, and "1" indicates presence and "0" indicates absence, then the first information can be any value of "000", "001", "010", "011", "100", "101", "110", and "111". Tables 5-1, 5-2, 5-3, and 5-4 below respectively list examples when the first information is "111", "011", "001", and "010". The remaining examples are similar and are not repeated here.

[0210] Table 5-1

[0211] In the example shown in Table 5-1, when the terminal device successfully receives the last scheduling and the NDI value of the last scheduling successfully received by the terminal device is 0, if the first information indicates that there is a new transmission, the terminal device expects to wake up the second receiver; if the first information indicates that there is a retransmission of 0 to 0, the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission of 1 to 1, the terminal device does not need to wake up the second receiver. Since the terminal device expects to wake up the second receiver when the first information indicates that there is a new transmission, in order to ensure that the terminal device successfully receives the new transmission of the next scheduling, the terminal device wakes up the second receiver. For another example, when the terminal device does not successfully receive the last scheduling and the NDI value of the last scheduling not successfully received by the terminal device is 0, if the first information indicates that there is a new transmission, the terminal device expects to wake up the second receiver; if the first information indicates that there is a retransmission of 0 to 0, the terminal device expects to wake up the second receiver; if the first information indicates that there is a retransmission of 1 to 1, the terminal device does not need to wake up the second receiver. Since, when the first information indicates that there is a new transmission and a retransmission of 0 to 0, the terminal device expects to wake up the second receiver, therefore, in order to ensure that the terminal device successfully receives the next scheduled new transmission and the retransmission of 0 to 0, the terminal device wakes up the second receiver. Other examples are similar and are not described here in detail.

[0212] Table 5-2

[0213] In the example shown in Table 5-2, if the terminal device fails to successfully receive the last scheduled message and the NDI value of the last scheduled message that the terminal device fails to successfully receive is 0, if the first information indicates that there is no new transmission, the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission of 0 to 0, the terminal device expects to wake up the second receiver; if the first information indicates that there is a retransmission of 1 to 1, the terminal device does not need to wake up the second receiver. Since, when the first information indicates that there is a retransmission of 0 to 0, the terminal device expects to wake up the second receiver, therefore, in order to ensure that the terminal device successfully receives the retransmission of 0 to 0 of the next schedule, the terminal device wakes up the second receiver. For another example, if the terminal device fails to successfully receive the last scheduled message and the NDI value of the last scheduled message that the terminal device fails to successfully receive is 0, if the first information indicates that there is no new transmission, the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission of 0 to 0, the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission of 1 to 1, the terminal device expects to wake up the second receiver. Since, when the first information indicates that there is a retransmission of 1 to 1, the terminal device expects to wake up the second receiver, so in order to ensure that the terminal device successfully receives the next scheduled retransmission of 1 to 1, the terminal device wakes up the second receiver. Other examples are similar and will not be described in detail here.

[0214] Table 5-3

[0215] Table 5-4

[0216] In this embodiment, when the terminal device determines to wake up the second receiver based on the type of retransmissions to be scheduled next, and / or when the terminal device determines to wake up the second receiver based on the presence of a new transmission to be scheduled next, the terminal device ultimately wakes up the second receiver. This helps ensure that the terminal device can receive specific new transmissions and / or retransmissions in a timely manner, thereby improving transmission reliability.

[0217] In another possible implementation, if the terminal device determines not to wake up the second receiver based on whether there is a retransmission type in the next scheduling after knowing whether the last scheduling is successfully received and the value of the NDI of the last scheduling, and the terminal device determines not to wake up the second receiver based on whether there is a new transmission in the next scheduling, then the terminal device ultimately does not wake up the second receiver.

[0218] For example, as shown in Table 5-2, if the terminal device successfully receives the last scheduling and the NDI value of the last scheduling successfully received by the terminal device is 0, if the first information indicates that there is no new transmission, then the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission of 0 to 0, then the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission of 1 to 1, then the terminal device does not need to wake up the second receiver. Therefore, the terminal device ultimately does not wake up the second receiver. For another example, if the terminal device successfully receives the last scheduling and the NDI value of the last scheduling successfully received by the terminal device is 1, if the first information indicates that there is no new transmission, then the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission of 0 to 0, then the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission of 1 to 1, then the terminal device does not need to wake up the second receiver. Therefore, the terminal device ultimately does not wake up the second receiver.

[0219] For example, as shown in Table 5-3, when the terminal device fails to successfully receive the last scheduling and the NDI value of the last scheduling that the terminal device fails to successfully receive is 0, if the first information indicates that there is no new transmission, then the terminal device does not need to wake up the second receiver; if the first information indicates that there is no 0-0 retransmission, then the terminal device does not need to wake up the second receiver; if the first information indicates that there is a 1-1 retransmission, then the terminal device does not need to wake up the second receiver. Therefore, the terminal device ultimately does not wake up the second receiver. Other examples are similar and are not repeated here.

[0220] For example, as shown in Table 5-4, if the terminal device fails to successfully receive the last scheduling and the NDI value of the last scheduling that the terminal device fails to successfully receive is 1, if the first information indicates that there is no new transmission, then the terminal device does not need to wake up the second receiver; if the first information indicates that there is no retransmission between 0 and 0, then the terminal device does not need to wake up the second receiver; if the first information indicates that there is no retransmission between 1 and 1, then the terminal device does not need to wake up the second receiver. Therefore, the terminal device does not ultimately wake up the second receiver. Other examples are similar and are not described here in detail.

[0221] In this embodiment, when the terminal device determines not to wake up the second receiver based on whether a retransmission type exists in the next scheduled transmission, and also determines not to wake up the second receiver based on whether a new transmission exists in the next scheduled transmission, the terminal device ultimately does not wake up the second receiver. This reduces the number of times the terminal device is woken up by unexpected new transmissions or retransmissions, which helps save power consumption in the terminal device.

[0222] In another type of embodiment, the first information indicates whether there is a new transmission of which type and whether there is a retransmission of which type.

[0223] In one embodiment, if the terminal device determines to wake up the second receiver based on the new transmission type existing in the next scheduling after knowing whether the last scheduling was successfully received and the value of the NDI of the last scheduling, and / or the terminal device determines to wake up the second receiver based on the retransmission type existing in the next scheduling, then the terminal device finally wakes up the second receiver.

[0224] For example, if the first information is represented by 4 bits, where the first bit of the 4 bits indicates whether there is a new transmission of 0 to 1, the second bit of the 4 bits indicates whether there is a new transmission of 1 to 0, the third bit of the 4 bits indicates whether there is a retransmission of 0 to 0, and the fourth bit of the 4 bits indicates whether there is a retransmission of 1 to 1, and "1" indicates existence and "0" indicates non-existence, then the first information can have 16 values. The following only uses the first information as "1111", "0111" and "1011" as examples for introduction. The terminal device's decision on whether to wake up the second receiver is shown in the following Tables 6-1, 6-2 and 6-3 respectively:

[0225] Table 6-1

[0226] In the example shown in Table 6-1, when the terminal device successfully receives the last scheduling and the value of the NDI of the last scheduling successfully received by the terminal device is 0, if the first information indicates that there is a new transmission of 0 to 1, the terminal device expects to wake up the second receiver; if the first information indicates that there is a new transmission of 1 to 0, the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission of 0 to 0, the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission of 1 to 1, the terminal device does not need to wake up the second receiver. Since, when the first information indicates that there is a new transmission of 0 to 1, the terminal device expects to wake up the second receiver, therefore, in order to ensure that the terminal device successfully receives the new transmission of 0 to 1 scheduled next time, the terminal device wakes up the second receiver. Other examples are similar and will not be repeated here.

[0227] Table 6-2

[0228] Table 6-3

[0229] In this embodiment, when the terminal device determines to wake up the second receiver based on the type of new transmissions to be scheduled next, and / or when the terminal device determines to wake up the second receiver based on the type of retransmissions to be scheduled next, the terminal device ultimately wakes up the second receiver. This helps ensure that the terminal device can receive specific new transmissions and / or retransmissions in a timely manner, thereby improving transmission reliability.

[0230] In another embodiment, if the terminal device determines not to wake up the second receiver based on whether there is a new transmission type in the next scheduling after knowing whether the last scheduling is successfully received and the value of the NDI of the last scheduling, and the terminal device determines not to wake up the second receiver based on whether there is a retransmission type in the next scheduling, then the terminal device ultimately does not wake up the second receiver.

[0231] For example, as shown in Table 6-2, when the terminal device successfully receives the last scheduled message and the NDI value of the last scheduled message successfully received by the terminal device is 0, if the first information indicates that there is no new transmission from 0 to 1, the terminal device does not need to wake up the second receiver; if the first information indicates that there is a new transmission from 1 to 0, the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission from 0 to 0, the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission from 1 to 1, the terminal device does not need to wake up the second receiver. Therefore, the terminal device ultimately does not wake up the second receiver.

[0232] For example, as shown in Table 6-3, when the terminal device successfully receives the last scheduled message and the NDI value of the last scheduled message successfully received by the terminal device is 1, if the first information indicates that there is a new transmission from 0 to 1, the terminal device does not need to wake up the second receiver; if the first information indicates that there is no new transmission from 1 to 0, the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission from 0 to 0, the terminal device does not need to wake up the second receiver; if the first information indicates that there is a retransmission from 1 to 1, the terminal device does not need to wake up the second receiver. Therefore, the terminal device ultimately does not wake up the second receiver.

[0233] In this embodiment, when the terminal device determines not to wake up the second receiver based on whether the new transmission type exists in the next scheduled transmission, and the terminal device determines not to wake up the second receiver based on whether the retransmission type exists in the next scheduled transmission, the terminal device ultimately does not wake up the second receiver. This reduces the number of times the terminal device is woken up by unexpected new transmissions or retransmissions, which helps save power consumption of the terminal device.

[0234] Optionally, the first information may further indicate whether there is a new process based on indicating whether there is a new transmission of a certain type and whether there is a retransmission of a certain type.

[0235] In one example, when the first information indicates that a new process exists, the terminal device may wake up the second receiver without considering the type of the new transmission and whether there is a retransmission to avoid missing the transmission of the new process.

[0236] In another example, when the first information indicates that there is no new process, the terminal device considers the type of the new transmission and whether there is a retransmission before finally determining whether to wake up the second receiver.

[0237] For example, if the first information is represented by 5 bits, wherein the first bit of the 5 bits indicates whether there is a new process, the second bit of the 5 bits indicates whether there is a new transmission from 0 to 1, the third bit of the 5 bits indicates whether there is a new transmission from 1 to 0, the fourth bit of the 5 bits indicates whether there is a retransmission from 0 to 0, and the fifth bit of the 5 bits indicates whether there is a retransmission from 1 to 1, and "1" indicates existence and "0" indicates non-existence, then when the first information is "11110", it indicates that there is a new process, a new transmission from 0 to 1, a new transmission from 1 to 0, a new transmission from 0 to 0, and a retransmission from 1 to 1 in the next scheduling; when the first information is "01111", it indicates that there is no new process, a new transmission from 0 to 1, a new transmission from 1 to 0, a new transmission from 0 to 0, and a retransmission from 1 to 1 in the next scheduling. The terminal device's decision on whether to wake up the second receiver is shown in Tables 6-4 and 6-5 below, respectively:

[0238] Table 6-4

[0239] Table 6-5

[0240] In the example shown in Table 6-4, the first bit of the first information indicates the existence of a new process. The terminal device wakes up the second receiver regardless of the type of the new transmission and whether there is a retransmission to avoid missing the transmission of the new process.

[0241] In the example shown in Table 6-5, the first bit of the first information indicates that no new process exists. Therefore, the terminal device determines whether to wake up the second receiver based on the last four bits of the first information. The implementation of the terminal device determining whether to wake up the second receiver based on the last four bits of the first information is similar to the example shown in Table 6-1 above and is not further described here.

[0242] It should be understood that when the first information is represented by 5 bits, the first information can have 32 values. This embodiment only lists examples of 2 values, and the remaining examples are not repeated.

[0243] Furthermore, the first information may also indicate the identifier of the process (i.e., the process number). Optionally, at least one bit is set in the first information based on the number of processes indicated in the next scheduled DCI to indicate the process number. The processes indicated by the next scheduled DCI are processes of the same user group, which may be processes in the same terminal device or processes in different terminal devices, which are not limited here. For example, if the number of processes indicated in the next scheduled DCI is 2, 1 bit is set in the first information to indicate the process number. For another example, if the number of processes indicated in the next scheduled DCI is 3 or 4, 2 bits are set in the first information to indicate the process number. For another example, if the number of processes indicated in the next scheduled DCI is 5 to 8, 3 bits are set in the first information to indicate the process number. And so on.

[0244] In one embodiment, at least one bit is added to the highest bit of the first information described above to indicate the process number, and the remaining bits refer to the example described above. For example, if the first information only indicates whether there is a new transmission and whether there is a retransmission, but does not indicate the type of the new transmission and the type of the retransmission, and there are two processes in the DCI scheduled next time, the first information can be implemented using 3 bits. The first bit of the 3 bits indicates the process number, and the last two bits of the 3 bits indicate whether there is a new transmission and whether there is a retransmission. For another example, if the first information can indicate the type of new transmission and whether there is a retransmission, and there are two processes in the DCI scheduled next time, the first information can be implemented using 4 bits. The first bit of the 4 bits indicates the process number, and the last three bits of the 4 bits indicate the type of new transmission and whether there is a retransmission. And so on, it will not be repeated here.

[0245] In another embodiment, at least one bit is set in the highest bit of the first information to indicate the process number, and the remaining bits indicate the type number corresponding to the process. The type number of the process is used to indicate the new transmission type or retransmission type of the next scheduling. There are five types of processes in total, including: a new process, which refers to a process that has never appeared, that is, a process that is transmitted for the first time; a 0-1 process, which refers to a process that needs to receive a new transmission of 0-1 in the next scheduling; a 1-0 process, which refers to a process that needs to receive a new transmission of 1-0 in the next scheduling; a 0-0 process, which refers to a process that needs to receive a retransmission of 0-0 in the next scheduling; and a 1-1 process, which refers to a process that needs to receive a retransmission of 1-1 in the next scheduling.

[0246] For example, taking the next scheduled DCI indicating scheduling information of two processes (for example, process 0 and process 1), and using 4 bits to represent the first information as an example, the first information can be implemented in the following manner:

[0247] For process 0: The first bit of the 4 bits is "0", indicating that the process number is 0, and the last 3 bits of the 4 bits indicate the type number corresponding to process 0. Among them, "000" indicates that process 0 is a new process; "001" indicates that process 0 is the process from 0 to 1; "010" indicates that process 0 is the process from 1 to 0; "011" indicates that process 0 is the process from 0 to 0; and "100" indicates that process 0 is the process from 1 to 1.

[0248] For process 1: The first bit of the 4 bits is "1", indicating that the process number is 1. The last 3 bits of the 4 bits indicate the type number corresponding to process 1. Among them, "000" indicates that process 1 is a new process; "001" indicates that process 1 is the process from 0 to 1; "010" indicates that process 1 is the process from 1 to 0; "011" indicates that process 1 is the process from 0 to 0; and "100" indicates that process 1 is the process from 1 to 1.

[0249] In this embodiment, by adding a bit to indicate the process number in the first information, it is possible to individually indicate what new retransmission type each process corresponds to, so that the terminal device can turn on the second receiver to listen to the DCI according to its needs, thereby eliminating the need for the terminal device to unnecessarily turn on the second receiver to listen to the DCI, which is beneficial to energy saving of the terminal device.

[0250] Corresponding to the scheme given in the above method embodiment, the embodiment of the present application also provides a corresponding communication device (sometimes also referred to as a communication device) and a communication system, wherein the communication device includes a module or unit for executing each part of the above embodiment. The module or unit can be software, hardware, or a combination of software and hardware. The following is only a brief description of the communication device and system. For the details of the implementation of the scheme, reference can be made to the description of the above method embodiment, which will not be repeated below.

[0251] Figure 4 is a schematic diagram of the structure of a communication device 40 provided in this embodiment. It should be understood that the terminal device in the method embodiment corresponding to Figure 2 can be based on the structure of the communication device 40 shown in Figure 4 in this embodiment.

[0252] Communication device 40 includes at least one processor 401, at least one memory 402, and at least two transceivers 403. Processor 401, memory 402, and transceiver 403 are connected. Optionally, communication device 40 may further include an input device 405, an output device 406, and one or more antennas 404. Antenna 404 is connected to transceiver 403, and input device 405 and output device 406 are connected to processor 401.

[0253] In this embodiment, the memory 402 is mainly used to store software programs and data. The memory 402 can be independent and connected to the processor 401. Optionally, the memory 402 can be integrated with the processor 401, for example, integrated into one or more chips. Among them, the memory 402 can store program codes for executing the technical solutions of the embodiments of the present application, and is controlled and executed by the processor 401. The various types of computer program codes executed can also be regarded as drivers for the processor 401. It should be understood that Figure 4 in this embodiment only shows one memory and one processor, but in actual applications, the communication device 40 can have multiple processors or multiple memories, which is not specifically limited here. In addition, the memory 402 can also be referred to as a storage medium or a storage device. The memory 402 can be a storage element on the same chip as the processor (i.e., an on-chip storage element), or an independent storage element, which is not limited in this embodiment of the present application.

[0254] In this embodiment, the transceiver 403 can be used to support the reception or transmission of radio frequency signals between the communication device 40 and the access network device. The transceiver 403 can be connected to the antenna 404. The transceiver 403 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 404 can receive radio frequency signals. The receiver Rx of the transceiver 403 is used to receive the radio frequency signals from the antennas 404, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 401 so that the processor 401 can further process the digital baseband signals or digital intermediate frequency signals, such as demodulation and decoding. In addition, the transmitter Tx in the transceiver 403 is also used to receive modulated digital baseband signals or digital intermediate frequency signals from the processor 401, convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals via one or more antennas 404. It should be understood that the aforementioned transceiver 403 can also be referred to as a transceiver unit, a transceiver, a transceiver device, etc. Alternatively, the device used to implement the receiving function in the transceiver unit can be considered a receiving unit, and the device used to implement the transmitting function in the transceiver unit can be considered a transmitting unit. That is, the transceiver unit includes a receiving unit and a transmitting unit. The receiving unit can also be referred to as a receiver, input port, receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, transmitter, or transmitting circuit, etc. In this application, the at least two transceivers 403 of the communication device 40 include a first transceiver and a second transceiver, and the operating power of the first transceiver is less than the operating power of the second transceiver. For an introduction to the first transceiver and the second transceiver, please refer to the relevant description of Figure 1B above and will not be repeated here.

[0255] Processor 401 may be a baseband processor or a central processing unit (CPU). The baseband processor and CPU may be integrated or separate. Processor 401 may be used to implement various functions for the terminal device, such as processing communication protocols and communication data, controlling the entire terminal device, executing software programs, and processing software program data. Alternatively, processor 401 may be used to implement one or more of the aforementioned functions.

[0256] In addition, the output device 406 communicates with the processor 401 and can display information in a variety of ways, which are not specifically limited herein.

[0257] In one design, a communication device 40 is configured to execute the method of the terminal device in the embodiment corresponding to FIG. A first receiver in the communication device 40 receives a wake-up signal, the wake-up signal including first information indicating whether a new transmission and / or a retransmission will occur in the next scheduling. A processor 401 determines whether to wake up a second receiver in the communication device 40 based on the first information, wherein the operating power of the first receiver is less than the operating power of the second receiver.

[0258] Optionally, the wake-up signal is used to wake up at least one user group, and the terminal devices in the at least one user group listen to the scheduling information of the next scheduling in the same search space.

[0259] In a possible implementation, if the last scheduling is successfully received and the first information indicates that there is no new transmission in the next scheduling, the processor 401 does not wake up the second receiver.

[0260] In a possible implementation, if the last scheduling is successfully received and the first information indicates that there is a new transmission in the next scheduling, the processor 401 wakes up the second receiver.

[0261] In a possible implementation, if the last scheduling is not received successfully and the first information indicates that there is no new transmission and no retransmission in the next scheduling, the processor 401 does not wake up the second receiver.

[0262] In a possible implementation manner, if the last scheduling is not received successfully and the first information indicates that there is a new transmission and / or a retransmission in the next scheduling, the processor 401 wakes up the second receiver.

[0263] In a possible implementation manner, the first information is further used to indicate a new transmission type and / or a retransmission type;

[0264] The type of new transmission is used to indicate: the NDI of the new data indicated in the last scheduling is 0, and the NDI of the next scheduling is 1; or, the NDI of the new data indicated in the last scheduling is 1, and the NDI of the next scheduling is 0;

[0265] or,

[0266] The retransmission type is used to indicate: the NDI of the new data indicated in the last scheduling is 0, and the NDI of the next scheduling is 0; or, the NDI of the new data indicated in the last scheduling is 1, and the NDI of the next scheduling is 1.

[0267] In one possible embodiment, if the last scheduling is successfully received, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling successfully received is the same as the NDI of the last scheduling indicated by the type of the new transmission, then the processor 401 wakes up the second receiver; or, if the last scheduling is successfully received, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling successfully received is different from the NDI of the last scheduling indicated by the type of the new transmission, then the processor 401 does not wake up the second receiver.

[0268] In one possible embodiment, if the last scheduling is not successfully received, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling that is not successfully received is the same as the NDI of the last scheduling indicated by the type of the new transmission, then the processor 401 wakes up the second receiver; or, if the last scheduling is not successfully received, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling that is not successfully received is different from the NDI of the last scheduling indicated by the type of the new transmission, then the processor 401 does not wake up the second receiver.

[0269] In one possible embodiment, if the last scheduling is not successfully received, the first information indicates that there is a retransmission in the next scheduling, and the NDI of the last scheduling that is not successfully received is the same as the NDI of the last scheduling indicated by the type of retransmission, then the processor 401 wakes up the second receiver; or, if the last scheduling is not successfully received, the first information indicates that there is a retransmission in the next scheduling, and the NDI of the last scheduling that is not successfully received is different from the NDI of the last scheduling indicated by the type of retransmission, then the processor 401 does not wake up the second receiver.

[0270] In one possible embodiment, if the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling is the same as the NDI of the last scheduling indicated by the type of the new transmission, the processor 401 wakes up the second receiver; or, if the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling is different from the NDI of the last scheduling indicated by the type of the new transmission, the processor 401 does not wake up the second receiver.

[0271] It should be noted that the specific implementation and beneficial effects of this embodiment can be referred to the method of the terminal device in the above embodiment, and will not be repeated here.

[0272] Figure 5 is a schematic diagram of the structure of another communication device 50 provided in this embodiment. It should be understood that the access network device in the method embodiment corresponding to Figure 2 can be based on the structure of the communication device 50 shown in Figure 5 in this embodiment.

[0273] The communication device 50 includes at least one processor 501, at least one memory 502, at least one transceiver 503, at least one network interface 505, and one or more antennas 504. The processor 501, memory 502, transceiver 503, and network interface 505 are connected via a connection device, and the antenna 504 is connected to the transceiver 503. The connection device may include various interfaces, transmission lines, or buses, etc., and this embodiment does not limit this.

[0274] Among them, the memory 502 is mainly used to store software programs and data. The memory 502 can exist independently and be connected to the processor 501. Optionally, the memory 502 can be integrated with the processor 501, for example, integrated into one or more chips. Among them, the memory 502 can store program codes for executing the technical solutions of the embodiments of the present application, and is controlled and executed by the processor 501. The various types of computer program codes executed can also be regarded as drivers for the processor 501. It should be understood that Figure 5 in this embodiment only shows one memory and one processor, but in actual applications, the communication device 50 can have multiple processors or multiple memories, which is not specifically limited here. In addition, the memory 502 can also be referred to as a storage medium or a storage device, etc. The memory 502 can be a storage element on the same chip as the processor (i.e., an on-chip storage element), or an independent storage element, which is not limited in the embodiments of the present application.

[0275] In this embodiment, the transceiver 503 can be used to support the reception or transmission of radio frequency signals between the communication device 50 and the terminal device. The transceiver 503 can be connected to the antenna 504. The transceiver 503 includes a transmitter Tx and a receiver Rx. Specifically, the transceiver 503 is similar to the transceiver 504 described above and is not described in detail here.

[0276] Furthermore, the aforementioned processor 501 is primarily used to process communication protocols and communication data, as well as control the entire network device, execute software programs, and process data from software programs. The communication device 50 may include a baseband processor and a central processing unit. As shown in Figure 5, the processor 501 may integrate the functions of both a baseband processor and a central processing unit. Alternatively, the baseband processor and the central processing unit may be independent processors interconnected via a bus or other technology. The communication device 50 may include multiple baseband processors to accommodate different network standards, multiple central processing units to enhance its processing capabilities, and the various components of the communication device 50 may be connected via various buses. The baseband processor may also be referred to as a baseband processing circuit or a baseband processing chip. The central processing unit may also be referred to as a central processing circuit or a central processing chip. The functionality for processing communication protocols and communication data may be built into the processor or stored in memory as a software program, which is then executed by the processor to implement the baseband processing functionality.

[0277] In addition, the aforementioned network interface 505 is used to connect the communication device 50 to other communication devices via a communication link. Specifically, the network interface 505 may include a network interface between the communication device 50 and a core network element, such as an S1 interface; the network interface 505 may also include a network interface between the communication device 50 and other network devices (such as other access network devices or core network elements), such as an X2 or Xn interface.

[0278] In one design, a communication device 50 is configured to execute the method of the access network device in the embodiment corresponding to FIG. A processor 501 in the communication device 50 is configured to generate a wake-up signal, the wake-up signal including first information indicating whether a new transmission and / or a retransmission will occur in the next scheduling. A transceiver 503 is configured to send the wake-up signal, the first information in the wake-up signal being used by a terminal device to determine whether to wake up a second receiver of the terminal device based on the wake-up signal received by the first receiver of the terminal device.

[0279] Optionally, the wake-up signal is used to wake up at least one user group, and the terminal devices in the at least one user group listen to the scheduling information of the next scheduling in the same search space.

[0280] In a possible implementation, the first information is further used to indicate a new transmission type and / or a retransmission type; wherein the new transmission type is used to indicate: the NDI of the new data indicated in the last scheduling is 0, and the NDI of the next scheduling is 1; or, the NDI of the new data indicated in the last scheduling is 1, and the NDI of the next scheduling is 0;

[0281] or,

[0282] The retransmission type is used to indicate: the NDI of the new data indicated in the last scheduling is 0, and the NDI of the next scheduling is 0; or, the NDI of the new data indicated in the last scheduling is 1, and the NDI of the next scheduling is 1.

[0283] In a possible implementation, the first information is also used to indicate an identifier of the process.

[0284] It should be noted that the specific implementation and beneficial effects of this embodiment can be referred to the method of accessing the network device in the above embodiment, which will not be repeated here.

[0285] As shown in FIG6 , the present application further provides a communication device 60. The communication device 60 may be a terminal device or an access network device, or a component of the terminal device or the access network device (e.g., an integrated circuit, a chip, etc.). The communication device 60 may also be other communication modules for implementing the methods in the method embodiments of the present application.

[0286] The communication device 60 may include a processing module 601 (or processing unit). Optionally, it may also include an interface module 602 (or transceiver unit or transceiver module) and a storage module 603 (or storage unit). The interface module 602 is used to implement communication with other devices. The interface module 602 may be, for example, a transceiver module or an input / output module.

[0287] In one possible design, one or more modules in FIG6 may be implemented by one or more processors, or by one or more processors and memories, or by one or more processors and transceivers, or by one or more processors, memories, and transceivers, which are not limited in this embodiment of the present application. The processors, memories, and transceivers may be provided separately or integrated.

[0288] The communication device 60 has the functions of implementing the terminal device described in the embodiment of the present application. For example, the communication device 60 includes a module or unit or means (means) corresponding to the terminal device performing the steps involved in the terminal device described in the embodiment of the present application. The functions or units or means (means) can be implemented by software, or by hardware, or by hardware executing the corresponding software implementation, or by a combination of software and hardware. For details, please refer to the corresponding description in the aforementioned corresponding method embodiment. Please refer to the communication device 40 in the corresponding embodiment of Figure 4 above for details.

[0289] Alternatively, the communication device 60 has the function of implementing the access network device described in the embodiment of the present application. For example, the communication device 60 includes a module or unit or means (means) corresponding to the access network device performing the steps involved in the access network device described in the embodiment of the present application. The function or unit or means (means) can be implemented by software, or by hardware, or by hardware executing the corresponding software implementation, or by a combination of software and hardware. For details, please refer to the corresponding description in the aforementioned corresponding method embodiment. For details, please refer to the communication device 50 in the corresponding embodiment of Figure 5 above.

[0290] In addition, the present application provides a computer program product comprising one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiments of the present application is generated in whole or in part. For example, the method related to the terminal device in Figure 2 is implemented. For another example, the method related to the access network device in Figure 2 is implemented. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be stored by a computer or a data storage device such as a server or data center that includes one or more available media. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0291] In addition, the present application also provides a computer-readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the method related to the terminal device as shown in Figure 2 above.

[0292] In addition, the present application also provides a computer-readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the method related to the access network device as shown in Figure 2 above.

[0293] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0294] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

Claims

1. A wake-up method, applied to a terminal device, characterized in that: include: Receiving a wake-up signal through a first receiver, the wake-up signal comprising first information, the first information being used to indicate whether there is a new transmission and / or whether there is a retransmission in the next scheduling; Based on the first information, it is determined whether to wake up a second receiver of the terminal device, and the operating power of the first receiver is less than the operating power of the second receiver.

2. The method according to claim 1, characterized in that: The wake-up signal is used to wake up at least one user group, and the terminal devices in the at least one user group listen to the scheduling information of the next scheduling in the same search space.

3. The method according to claim 1 or 2, characterized in that: The determining whether to wake up the second receiver of the terminal device based on the first information includes: If the last scheduling is successfully received, and the first information indicates that there is no new transmission in the next scheduling, the second receiver is not woken up; or, If the last scheduling is received successfully, and the first information indicates that there is a new transmission in the next scheduling, waking up the second receiver; or, If the last scheduling is not successfully received, and the first information indicates that there is no new transmission and no retransmission in the next scheduling, the second receiver is not awakened; or, If the last scheduling is not successfully received, and the first information indicates that there is a new transmission and / or a retransmission in the next scheduling, the second receiver is woken up.

4. The method according to claim 3, characterized in that: The first information is also used to indicate the type of the new transmission and / or the type of the retransmission; wherein, The new transmission type is used to indicate: The NDI of the new data indicated by the last scheduling is 0, and the NDI of the next scheduling is 1; or, The new data indication NDI of the last scheduling is 1, and the NDI of the next scheduling is 0; or, The retransmission type is used to indicate: The new data indication NDI of the last scheduling is 0, and the NDI of the next scheduling is 0; or, The new data indication NDI of the last scheduling is 1, and the NDI of the next scheduling is 1.

5. The method according to claim 4, characterized in that If the last scheduling is successfully received and the first information indicates that there is a new transmission in the next scheduling, waking up the second receiver comprises: If the last scheduling is successfully received, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling successfully received is the same as the NDI of the last scheduling indicated by the type of the new transmission, then waking up the second receiver; or, The method further comprises: If the last scheduling is successfully received, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling successfully received is different from the NDI of the last scheduling indicated by the type of the new transmission, the second receiver will not be woken up.

6. The method according to claim 4, characterized in that If the last scheduling is not successfully received and the first information indicates that there is a new transmission in the next scheduling, waking up the second receiver comprises: If the last scheduling is not successfully received, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling that is not successfully received is the same as the NDI of the last scheduling indicated by the type of the new transmission, then waking up the second receiver; or, The method further comprises: If the last scheduling is not successfully received, the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling that was not successfully received is different from the NDI of the last scheduling indicated by the type of the new transmission, the second receiver will not be woken up.

7. The method according to claim 4, characterized in that If the last scheduling is not successfully received and the first information indicates that there is a retransmission in the next scheduling, waking up the second receiver comprises: If the last scheduling is not successfully received, the first information indicates that there is a retransmission in the next scheduling, and the NDI of the last scheduling that was not successfully received is the same as the last scheduled NDI indicated by the retransmission type, waking up the second receiver; or, The method further comprises: If the last scheduling is not successfully received, the first information indicates that there is a retransmission in the next scheduling, and the NDI of the last scheduling that was not successfully received is different from the NDI of the last scheduling indicated by the type of the retransmission, the second receiver will not be woken up.

8. The method according to claim 4, characterized in that The determining whether to wake up the second receiver of the terminal device based on the first information includes: If the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling is the same as the NDI of the last scheduling indicated by the type of the new transmission, then waking up the second receiver; or, If the first information indicates that there is a new transmission in the next scheduling, and the NDI of the last scheduling is different from the NDI of the last scheduling indicated by the type of the new transmission, the second receiver is not woken up.

9. The method according to any one of claims 1 to 8, characterized in that The first information is also used to indicate an identifier of a process.

10. The method according to any one of claims 1 to 9, characterized in that The terminal device is a terminal device that receives multicast service data.

11. A wake-up method, applied to an access network device or another terminal device, characterized in that: include: A wake-up signal is sent, wherein the wake-up signal includes first information, wherein the first information is used to indicate whether there is a new transmission and / or whether there is a retransmission in the next scheduling, and the first information is used by the terminal device to determine whether to wake up the second receiver of the terminal device based on the wake-up signal received by the first receiver of the terminal device.

12. The method according to claim 11, characterized in that The wake-up signal is used to wake up at least one user group, and the terminal devices in the at least one user group listen to the scheduling information of the next scheduling in the same search space.

13. The method according to claim 11 or 12, characterized in that: The first information is also used to indicate the type of the new transmission and / or the type of the retransmission; wherein, The new transmission type is used to indicate: The NDI of the new data indicated by the last scheduling is 0, and the NDI of the next scheduling is 1; or, The new data indication NDI of the last scheduling is 1, and the NDI of the next scheduling is 0; or, The retransmission type is used to indicate: The new data indication NDI of the last scheduling is 0, and the NDI of the next scheduling is 0; or, The new data indication NDI of the last scheduling is 1, and the NDI of the next scheduling is 1.

14. The method according to any one of claims 11 to 13, characterized in that The first information is also used to indicate an identifier of a process.

15. A communication device, characterized in that: The communication device comprises a module for executing the method according to any one of claims 1 to 10; or comprises a module for executing the method according to any one of claims 11 to 14.

16. A communication device, characterized in that: The method comprises a processor configured to execute the method according to any one of claims 1 to 10; or configured to execute the method according to any one of claims 11 to 14.

17. A computer-readable storage medium, characterized in that: Instructions are stored, and when the instructions are executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 10; or the method according to any one of claims 11 to 14.

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