Wake-up method and communication device

Abstract

Provided are a wake-up method and a communication device, the method comprising: a wake-up signal received by a first receiver of a terminal device comprising first information, the first information being capable of indicating whether new transmission and / or retransmission exists in next scheduling; and the terminal device determines whether to wake up a second receiver of the terminal device based on the wake-up signal based on the first information. Since 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 instead of immediately wake 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, the wake-up signal is received. The situation that the terminal equipment which does not need to receive next scheduling is awakened can be reduced, and the energy consumption of the terminal equipment can be saved.

Description

Technical Field

[0001] 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

[0002] Low-power wake-up signal (LP-WUS) is a technology proposed by Release 18 (R18) of the 3rd generation partnership project (3GPP) to reduce the energy consumption of terminal devices. Terminal devices that support LP-WUS technology adopt a main and auxiliary receiving link combination mode. Specifically, the function of the terminal device to receive signals 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 a 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 next scheduling-related information based on DCI.

[0003] However, for LP-WUS terminal devices in the multicast and broadcast service (MBS) scenario, the terminal devices belonging to the same user group detect a wake-up signal in the same search space, which triggers all the 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. Therefore, these terminal devices generate unnecessary energy consumption and affect energy saving. Summary of the invention

[0004] 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.

[0005] 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 through a first receiver, and the wake-up signal includes first information, and the first information is used to indicate whether there is a new transmission and / or whether there is 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, and the working power of the first receiver is less than the working power of the second receiver.

[0006] In the present application, the wake-up signal received by the first receiver of the terminal device includes the first information, and the first information can indicate whether there is a new transmission and / or whether there is a retransmission in the next scheduling, and then the terminal device determines whether to wake up the second receiver of the terminal device based on the wake-up signal based on the first information. Since 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, instead of waking up the second receiver based on the wake-up signal immediately 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.

[0007] In a 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 to the scheduling information of 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 a multicast service.

[0008] In this implementation, the wake-up signal is used to wake up at least one user group, and 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, so that some terminal devices in a user group receiving the same wake-up signal can wake up the second receiver, while other terminal devices may not wake up the second receiver. This is not only conducive to improving the transmission efficiency of multicast service data in the MBS scenario, but also conducive to energy saving of some terminal devices in the user group.

[0009] 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 a specific implementation manner that may be any one of the following:

[0010] 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 there is retransmission in the next scheduling.

[0011] In one example, if the terminal device successfully receives 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. In another example, if the terminal device successfully receives the last scheduling, and the first information indicates that there is no new transmission and there is a retransmission in the next scheduling, the terminal device does not wake up the second receiver.

[0012] In this implementation, since the terminal device has successfully received the last scheduling, the terminal device expects to receive new transmissions in the next scheduling without receiving retransmissions. Therefore, when the first information indicates that there is no new transmission in the next scheduling (regardless of whether there is a retransmission), the terminal device does not wake up the second receiver, which is conducive to saving energy consumption of the terminal device.

[0013] 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.

[0014] In one example, if the terminal device successfully receives the last scheduling, and the first information indicates that there is a new transmission and a retransmission in the next scheduling, the terminal device wakes up the second receiver. In another example, if the terminal device successfully receives the last scheduling, and the first information indicates that there is a new transmission and no retransmission in the next scheduling, the terminal device wakes up the second receiver.

[0015] In the present 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 is awakened, reducing the meaningless wake-up of the second receiver of the terminal device, and helping to save energy consumption of the terminal device.

[0016] 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.

[0017] In the present 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, thereby reducing the meaningless wake-up of the second receiver of the terminal device, which is beneficial to saving 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 a new transmission and / or a retransmission in the next scheduling, the terminal device wakes up the second receiver.

[0019] 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 there is a retransmission in the next scheduling, or the first information indicates that there is a new transmission and there is no retransmission in the next scheduling.

[0020] 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.

[0021] In the present 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 listen to 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.

[0022] In a possible implementation manner, the first information is further used to indicate a new transmission type and / or a retransmission type;

[0023] 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;

[0024] or,

[0025] The type of retransmission 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.

[0026] In a possible implementation manner, 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:

[0027] 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,

[0028] 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.

[0029] In this embodiment, the first information can indicate the type of new transmission. When the terminal device learns based on the first information that there is a type of new transmission that it expects to receive (i.e., the NDI of the last scheduling is the same as the NDI of the last scheduling indicated by the type of new transmission), the terminal device wakes up the second receiver; otherwise, the terminal device does not wake up the second receiver. This not only ensures that the new transmission that the terminal device expects to receive is not missed, which is beneficial to improving the reliability of data transmission, but also reduces the situation where the terminal device is woken up by the new transmission that it does not expect to receive, which is beneficial to saving energy consumption of the terminal device.

[0030] 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:

[0031] 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,

[0032] 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.

[0033] 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:

[0034] 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,

[0035] 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 failed 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.

[0036] 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:

[0037] 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 NDI of the last scheduling indicated by the retransmission type, then the second receiver is woken up.

[0038] 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 needs to monitor the retransmission with NDI of 0 to 0, or if the NDI of the last scheduling is 1 and the terminal device does not successfully receive the last scheduling, the terminal device needs to monitor the retransmission with NDI of 1 to 1. This is helpful to ensure that the retransmission that the terminal device expects to receive is not missed, and improve the reliability of data transmission.

[0039] 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 retransmission type, the second receiver will not be woken up.

[0040] 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, or 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 the retransmission that is not expected to be received, which is conducive to saving the energy consumption of the terminal device.

[0041] In a possible implementation manner, the first information is also used to indicate an identifier of the process.

[0042] In this embodiment, by adding a bit indication process identifier in the first information, it is possible to individually indicate which 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.

[0043] In a second aspect, the present application provides a wake-up method, which can be executed 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, and the wake-up signal includes first information, and 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.

[0044] 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.

[0045] In a possible implementation manner, the first information is further used to indicate the type of new transmission and / or the type of retransmission; wherein the type of new transmission is used to indicate: the NDI indicating the new data of the last scheduling is 0, and the NDI of the next scheduling is 1; or, the NDI indicating the new data of the last scheduling is 1, and the NDI of the next scheduling is 0;

[0046] or,

[0047] The type of retransmission 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.

[0048] In a possible implementation manner, the first information is also used to indicate an identifier of the process.

[0049] 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.

[0050] 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, and the wake-up signal includes first information, and 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 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.

[0051] 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.

[0052] In a possible implementation manner, the first information is further used to indicate the type of new transmission and / or the type of retransmission; wherein the type of new transmission is used to indicate: the NDI indicating the new data of the last scheduling is 0, and the NDI of the next scheduling is 1; or, the NDI indicating the new data of the last scheduling is 1, and the NDI of the next scheduling is 0;

[0053] or,

[0054] The type of retransmission 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.

[0055] In a possible implementation manner, the first information is also used to indicate an identifier of the process.

[0056] 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.

[0057] In a fourth aspect, an embodiment of the present application provides a communication device, which may be a terminal device in the aforementioned implementation, or a chip in 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, and the storage module may be a memory; the storage module is used to store instructions, and the processing module executes the instructions stored in the storage module so that the terminal device executes the method in the first aspect or any one of the implementations of the first aspect; or, executes the method in the third aspect or any one of the implementations of the third aspect. When the communication device is a chip in a terminal device, the processing module may be a processor, and the transceiver module may be an input / output interface, a pin or a circuit, etc.; the processing module executes the instructions stored in the storage module so that the terminal device executes the method in the first aspect or any one of the implementations of the first aspect; or, executes the method in the third aspect or any one of the implementations of the third aspect. The storage module may be a storage module in the chip (for example, a register, a cache, etc.), or a storage module in the terminal device located outside the chip (for example, a read-only memory, a random access memory, etc.).

[0058] In a fifth aspect, an embodiment of the present application provides a communication device, which may be an access network device in the aforementioned implementation manner, or a chip in 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 also include a storage module, and the storage module may be a memory; the storage module is used to store instructions, and the processing module executes the instructions stored in the storage module so that the first access network device executes the second aspect or the method in any one of the implementation manners of the second aspect. When the communication device is a chip in an access network device, the processing module may be a processor, and the transceiver module may be an input / output interface, a pin or a circuit, etc.; the processing module executes the instructions stored in the storage module so that the first access network device executes the second aspect or the method in any one of the implementation manners of the second aspect. The storage module may be a storage module in the chip (for example, a register, a cache, etc.), or a storage module in the access network device located outside the chip (for example, a read-only memory, a random access memory, etc.).

[0059] 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, and the memory is used to store a program or instruction. When the program or instruction is executed by the processor, the communication device executes the method described in any one of the embodiments of the aforementioned various aspects.

[0060] 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 a method as described in any one of the aforementioned aspects.

[0061] 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 preceding aspects.

[0062] In the ninth aspect, an embodiment of the present application provides a communication system, which includes a terminal device executing the aforementioned first aspect and any one of the embodiments of the first aspect, and a first access network device executing the aforementioned second aspect and any one of the embodiments of the second aspect; or, the communication system includes a terminal device executing the aforementioned first aspect and any one of the embodiments of the first aspect, and a first terminal device executing the aforementioned third aspect and any one of the embodiments of the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1A An example diagram of a communication system to which the wake-up method provided in the present application is applicable;

[0064] Figure 1B An example diagram of a receiver structure of a terminal device in this application;

[0065] Figure 1C This is an example diagram of a terminal device waking up an auxiliary link based on a wake-up signal in an MBS scenario in the traditional technology;

[0066] Figure 2 A flowchart of the wake-up method provided by this application;

[0067] Figure 3A This 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;

[0068] Figure 3B This 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;

[0069] Figure 3C This 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;

[0070] Figure 4 A schematic diagram of an embodiment of a communication device provided by the present application;

[0071] Figure 5 A schematic diagram of another embodiment of the communication device provided by the present application;

[0072] Figure 6 A schematic diagram of another embodiment of the communication device provided in the present application. DETAILED DESCRIPTION

[0073] 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 of the embodiments.

[0074] In the various embodiments of the present application, unless otherwise specified or provided for in any logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0075] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way 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, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0076] 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 may 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 objects associated before and after are in an "or" relationship. In addition, "at least one of the following" or similar expressions in this article are 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, C can be single or multiple.

[0077] For ease of understanding, the following first introduces the system architecture and application scenarios applicable to the wake-up method proposed in this application:

[0078] The wake-up method proposed in this application can be applied to 5G NR (5G New Radio) system, the 6th generation mobile communication technology (6G) system and subsequent evolution standards. Figure 1A As shown, the communication system at least includes 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-distance communication (proximity communication, PC5) as an example, the communication system mainly includes a terminal device.

[0079] 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 a 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 (ie, 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, user agent, or user device, etc. In addition, the terminal device may be a mobile phone, a tablet computer (Pad), 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 smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. In this embodiment and subsequent embodiments, the terminal device is taken as an example for introduction.

[0080] It should be noted that Figure 1BAs shown, the terminal device involved in the present application has at least two receivers, wherein the working power of one receiver is less than the working power of the other receiver. Generally, the receiver with a larger working power is called a main receiver (also called a main link), and the receiver with a smaller working 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 states (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 with the main receiver, the auxiliary receiver has lower complexity, lower power consumption, and lower processing power (for example, demodulation, calculation, etc.), and 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 auxiliary receiver may also receive some traditional signals (for example, synchronization signal block (SSB) for measurement, etc.). In this application, only the auxiliary receiver receiving the wake-up signal and the main receiver receiving the DCI are used as an example for introduction.

[0081] In addition, the access network device can be any device with wireless transceiver function, which can be used to be responsible for air interface related functions, such as wireless link maintenance function, wireless resource management function, and part of mobility management function. In addition, the access network device can also be configured with a baseband unit (BBU) with baseband signal processing function. Exemplarily, the access network device can be the access network device (radio access network, RAN) currently providing services for the terminal device. At present, some common examples of access network equipment are: Node B (NB), evolved Node B (eNB or eNodeB), next generation node B (gNB) in 5G new radio (NR) system, node (e.g., xNodeB) in 6G system, 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 node (HNB)), etc. In addition, in a network structure such as cloud radio access network (CloudRAN) or open radio access network (ORAN), the access network equipment may include at least one of a centralized unit (CU) (also called a control unit), a distributed unit (DU), and a radio unit (RU). Among them, the RAN equipment including CU and DU splits the protocol layer of gNB in ​​the NR system, puts the functions of some protocol layers in the CU for centralized control, and distributes the functions of the remaining part or all of the protocol layers in the DU, which is centrally controlled by the CU. In addition, in the IoT scenario, the access network device can also be a device that reads and writes tags, that is, a reader / writer device. In this embodiment and subsequent embodiments, the access network device is taken as an example for introduction.

[0082] In addition, the wake-up method proposed in this application is applied to the multicast and broadcast service (MBS) scenario, which mainly refers to services for multiple terminal devices. For example, live broadcast services, public safety services, batch software update services, etc., are not limited in this application. Figure 1A As shown, 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 the 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 Figure 1C As shown, the terminal device (for example, terminal device 1) in the user group that has successfully received the last scheduling does not need to receive the next retransmission scheduling, and the terminal device does not need to be awakened to receive DCI. Therefore, this part of the terminal devices generates unnecessary energy consumption and affects energy saving.

[0083] In this regard, the present application provides a wake-up method and a communication device, which are used to indicate 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 awakened, thereby saving energy consumption of the terminal device.

[0084] Combine the following Figure 2 The main process of the wake-up method provided in this application is introduced. The wake-up method can be executed by a terminal device and a network device (for example, an access network device), or 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 execution by a terminal device and an access network device. Figure 2 As shown, the communication method includes the following steps:

[0085] Step 201: The terminal device receives a wake-up signal through a first receiver. Accordingly, the access network device sends a wake-up signal; or, another terminal device sends a wake-up signal.

[0086] The first receiver is one of the at least two receivers of the terminal device. Optionally, the first receiver is a receiver with a 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 a 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. The first receiver may 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 may be a main receiver (main receiver) (also called a main link), which is not limited in this application. Please refer to the previous text for the introduction of the main receiver and the auxiliary receiver. Figure 1B The corresponding descriptions are not repeated here.

[0087] In addition, the aforementioned wake-up signal may come from an access network device or from another terminal device. For example, in cellular network communication, the wake-up signal is generated by an access network device, and the terminal device receives the wake-up signal from the access network device through a first receiver. For another example, in short-distance 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 another terminal device through a first receiver. In this embodiment and subsequent embodiments, the wake-up signal is introduced as an example from an access network device.

[0088] In addition, the wake-up signal includes first information, and the first information 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.

[0089] Optionally, the first information may be represented by at least two bits newly added to the wake-up signal, at least one of the at least two bits being used to indicate whether there is a new transmission, and another at least one of the at least two bits being used to indicate whether there is a retransmission.

[0090] 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 is not 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 is not elaborated here.

[0091] 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 (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.

[0092] In one example, the wake-up signal is scrambled with a group identifier (e.g., a group identifier of a first user group), and the terminal devices in the first user group receive the same wake-up signal, and all use the group identifier of the first user group to descramble the wake-up signal 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.

[0093] In another example, the wake-up signal is used to wake up multiple user groups, and the group identifiers corresponding to the multiple user groups may be different. For example, user groups with different G-RNTIs in the same cell are all configured to monitor DCI in the same search space. In this case, the wake-up signal can be a cell-granularity signal, that is, indicating whether each terminal device in a cell containing multiple user groups wakes up their respective second receivers.

[0094] 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.

[0095] For other introductions about the first receiver and the second receiver, please refer to step 201 above, which will not be repeated here. In addition, the second receiver is used to monitor the PDCCH and receive the 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 through the second receiver, and receive downlink control information DCI, wherein the DCI includes scheduled retransmission information and / or new transmission information.

[0096] 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:

[0097] 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 there is retransmission in the next scheduling.

[0098] In one example, if the terminal device successfully receives 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. In another example, if the terminal device successfully receives the last scheduling, and the first information indicates that there is no new transmission and there is a retransmission in the next scheduling, the terminal device does not wake up the second receiver.

[0099] Exemplarily, 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 1-1:

[0100] Table 1-1

[0101] Receipt status of the last dispatch First Information The meaning of the first message Will it finally wake up? Successfully received 00 There will be no new transmission and no retransmission in the next scheduling Do not wake up Successfully received 01 The next scheduling will not have new transmission and will have retransmission Do not wake up

[0102] As shown in Table 1-1, since the terminal device has successfully received the last scheduling, the terminal device expects to receive new transmissions in the next scheduling without receiving retransmissions. Therefore, when the first information indicates that there is no new transmission in the next scheduling (regardless of whether there is a retransmission), the terminal device does not wake up the second receiver, which is beneficial to saving energy consumption of the terminal device.

[0103] 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.

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

[0105] Exemplarily, 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:

[0106] Table 1-2

[0107] Receipt status of the last dispatch First Information The meaning of the first message Will it finally wake up? Successfully received 11 The next scheduling has new transmission and retransmission wake Successfully received 10 The next scheduling has new transmission and no retransmission wake

[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 is awakened, 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] Exemplarily, 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] Receipt status of the last dispatch First Information The meaning of the first message Will it finally wake up? Unsuccessful reception 00 There will be no new transmission and no retransmission in the next scheduling Do not wake up

[0113] 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, thereby reducing the meaningless wake-up of the second receiver of the terminal device, which is beneficial to saving energy consumption of the terminal device.

[0114] 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.

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

[0116] 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.

[0117] Exemplarily, 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:

[0118] Table 1-4

[0119] Receipt status of the last dispatch First Information The meaning of the first message Will it finally wake up? Unsuccessful reception 11 The next scheduling has new transmission and retransmission wake Unsuccessful reception 10 The next scheduling has new transmission and no retransmission wake Unsuccessful reception 01 There will be no new transmission and retransmission in the next scheduling wake

[0120] As shown in Tables 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 listen to 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.

[0121] 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, which is not limited by this application.

[0122] 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:

[0123] In a 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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 elaborated here.

[0128] For example, Figure 3AAs shown, 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 a 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.

[0129] Furthermore, the first information may also indicate a new transmission type and / or a retransmission type.

[0130] The protocol also defines a new data indicator (NDI) field in DCI, and the value of NDI is 0 or 1. The sender indicates to the receiver whether the current transmission (i.e., the transmission indicated by DCI) is a new transmission or a retransmission by whether the NDI value is flipped. If the NDI value of the next scheduling is opposite to the NDI value of the last scheduling (i.e., the NDI value is flipped), it means that the data of the next scheduling is new transmission data; if the NDI value of the next scheduling is the same as the NDI value of the last scheduling, it means 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 of the last scheduling is 0, and the NDI of the next scheduling is 1) and 1-0 new transmission (i.e., the NDI of the last scheduling is 1, and the NDI of the next scheduling is 0); the types of retransmission include 0-0 retransmission (i.e., the NDI of the last scheduling is 0, and the NDI of the next scheduling is 0) and 1-1 retransmission (i.e., the NDI of the last scheduling is 1, and the NDI of the next scheduling is 1).

[0131] Optionally, the first information may also indicate whether there is a new process. The new process refers to the fact that there is no transmission of the process on 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 of 0 to 1 (that is, the NDI of the last scheduling is 0, and the NDI of the next scheduling is 1), new transmissions of 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:

[0132] In one type of implementation, the first information not only indicates whether there is a new transmission, but also indicates whether there is what type of new transmission.

[0133] 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.

[0134] Among them, 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 contained 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.

[0135] Among them, the last scheduled NDI indicated by the new transmission type refers to the NDI determined by the terminal device from the new transmission type indicated by the received first information. Optionally, if the new transmission type is a 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), then the last scheduled NDI indicated by the new transmission type is 0; if the new transmission is 1 to 0 (that is, the NDI of the last scheduling is 1, and the NDI of the next scheduling is 0), then the last scheduled NDI indicated by the new transmission type is 1.

[0136] Exemplarily, if the value of the NDI last scheduled by the terminal device is 0 or 1, the value of the NDI last scheduled indicated by the newly transmitted type is 0 or 1, and the terminal device successfully receives the last schedule, then an example of triggering the terminal device to wake up the second receiver is shown in Table 2-1 below:

[0137] Table 2-1

[0138]

[0139] 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.

[0140] 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 that there is a new transmission of 0 to 1 in the next scheduling in the first information. 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 (i.e. 0) 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 then the terminal device triggers the wake-up of the second receiver.

[0141] 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.

[0142] 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 for 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 that there is a new transmission of 1 to 0 in the next scheduling in the first information. 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 (i.e. 1) 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 then the terminal device triggers the wake-up of the second receiver.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] Exemplarily, if the value of the NDI last scheduled by the terminal device is 0 or 1, the value of the NDI last scheduled indicated by the newly transmitted type is 0 or 1, and the terminal device successfully receives the last schedule, then the example of the terminal device not waking up the second receiver is shown in the following Table 2-2:

[0147] Table 2-2

[0148]

[0149] 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.

[0150] 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 successfully received NDI of the last scheduling 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.

[0151] 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 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.

[0152] 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 successfully received NDI of the last scheduling 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 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.

[0153] 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 does not expect to receive in the next scheduling (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, and 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, and 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.

[0154] 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 failed 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.

[0155] Exemplarily, if the value of the NDI last scheduled by the terminal device is 0 or 1, the value of the NDI last scheduled indicated by the new transmission type is 0 or 1, and the terminal device fails to successfully receive the last schedule, then an example of the terminal device waking up the second receiver is shown in Table 2-3 below:

[0156] Table 2-3

[0157]

[0158] 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.

[0159] In this example, if the terminal device fails to successfully receive the last scheduled 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 scheduled transmission. 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.

[0160] 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.

[0161] 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.

[0162] 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 failed 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.

[0163] Exemplarily, if the value of the NDI last scheduled by the terminal device is 0 or 1, the value of the NDI last scheduled indicated by the new transmission 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:

[0164] Table 2-4

[0165]

[0166] 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.

[0167] 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.

[0168] 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 in the next scheduling that the terminal device does not expect to receive (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 the new transmission), the terminal device does not trigger the awakening of the second receiver. 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 conducive to saving energy consumption of the terminal device.

[0169] 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 that can 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 did 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.

[0170] For example, Figure 3B As shown, 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 that there are 0-1 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. 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. It is beneficial to save 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.

[0171] Optionally, the first information may indicate whether there is a retransmission in addition to indicating what type of new transmission 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 not only based on the type of new transmission that exists in the next scheduling, but also based on whether there is a retransmission in the next scheduling.

[0172] 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 existence of retransmission in the next scheduling, then the terminal device finally wakes up the second receiver.

[0173] Exemplarily, if the first information is represented by 3 bits, wherein the first bit of the 3 bits indicates whether there is a new transmission of 0 to 1, the second bit of the 3 bits indicates whether there is a new transmission of 1 to 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". The following Tables 3-1, 3-2, 3-3 and 3-4 respectively list examples when the first information is "111", "011", "101" and "110", and the remaining examples are similar and will not be repeated here.

[0174] Table 3-1

[0175]

[0176] In the example shown in Table 3-1, 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, 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. 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 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.

[0177] Table 3-2

[0178]

[0179] Table 3-3

[0180]

[0181] Table 3-4

[0182]

[0183] In this implementation, when the terminal device determines to wake up the second receiver based on the type of new transmission that exists in the next scheduling, and / or when the terminal device determines to wake up the second receiver based on the existence of retransmission in the next scheduling, the terminal device finally wakes up the second receiver. This is conducive to ensuring that the terminal device can receive specific new transmissions and / or retransmissions in a timely manner, and improving the reliability of transmission.

[0184] 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.

[0185] Exemplarily, as shown in Table 3-2, 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 no 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 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. Therefore, the terminal device does not wake up the second receiver in the end.

[0186] Exemplarily, as shown in Table 3-3, 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 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 no 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. Therefore, the terminal device does not wake up the second receiver in the end.

[0187] In this implementation manner, when the terminal device determines not to wake up the second receiver based on whether there is a new transmission type in the next scheduling, and the terminal device determines not to wake up the second receiver based on whether there is a retransmission in the next scheduling, the terminal device ultimately does not wake up the second receiver. This reduces the situation where the terminal device is woken up by a new transmission or retransmission that is not expected to be received, which is conducive to saving power consumption of the terminal device.

[0188] 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.

[0189] In one example, when the first information indicates that there is a new process, the terminal device may not consider the type of the new transmission and whether there is a retransmission, and the terminal device wakes up the second receiver to avoid missing the transmission of the new process.

[0190] In another example, when the first information indicates that there is no new process, the terminal device considers the type of new transmission and whether there is retransmission before finally determining whether to wake up the second receiver.

[0191] Exemplarily, 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 decisions of the terminal device on whether to wake up the second receiver are shown in Tables 3-5 and 3-6 respectively:

[0192] Table 3-5

[0193]

[0194] Table 3-6

[0195]

[0196] In the example shown in Table 3-5, the first bit of the first information indicates that there is 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.

[0197] In the example shown in Table 3-6, the first bit of the first information indicates that there is no new process, and the terminal device refers to the last three bits of the first information to decide whether to wake up the second receiver. The implementation method of the terminal device deciding 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 repeated here.

[0198] 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.

[0199] 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.

[0200] In one possible implementation, 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 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.

[0201] Among them, the NDI of the last scheduling that the terminal device failed to receive successfully 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 failure of the terminal device to successfully receive the last scheduling means that the terminal device did not successfully receive the TB transmitted last time. Even if the terminal device fails to successfully receive the last scheduling, the terminal device can receive the DCI of the last scheduling and obtain the NDI.

[0202] 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.

[0203] Exemplarily, if the value of the NDI last scheduled by the terminal device is 0 or 1, the value of the NDI last scheduled 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:

[0204] Table 4-1

[0205]

[0206] In one example, the first information indicates that there is a retransmission of 0 to 0 (i.e., the NDI of the last scheduling is 0, and the NDI of the next scheduling is 0), that is, the NDI of the last scheduling indicated by the type of retransmission 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.

[0207] 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 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 DCI of the next scheduling, 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.

[0208] 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 type of retransmission 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.

[0209] 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 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 1~1 retransmission in the DCI of the next scheduling, that is, the access network device indicates that there is a 1~1 retransmission in the next scheduling in the first information. 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.

[0210] 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.

[0211] 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 type of retransmission, 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 type of retransmission, please refer to the aforementioned implementation, which will not be repeated here.

[0212] Exemplarily, if the value of the NDI last scheduled by the terminal device is 0 or 1, the value of the NDI last scheduled 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:

[0213] Table 4-2

[0214]

[0215] 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 type of retransmission 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.

[0216] 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.

[0217] In another example, the first information indicates that there is a retransmission of 0 to 0 (i.e., the NDI of the last scheduling is 0, and the NDI of the next scheduling is 0), that is, the NDI of the last scheduling indicated by the type of retransmission 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.

[0218] 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 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, 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.

[0219] 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, and 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, and 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.

[0220] For example, Figure 3C As shown, 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 that there is a retransmission of 0 to 0, 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. It is beneficial to save energy consumption of some terminal devices while ensuring that some terminal devices in the user group do not miss the retransmission scheduled for the next time.

[0221] Optionally, the first information may 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 not only based on the type of retransmission that exists in the next scheduling, but also based on whether there is a new transmission in the next scheduling.

[0222] In one embodiment, if the terminal device determines to wake up the second receiver based on the type of retransmission 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 eventually wakes up the second receiver.

[0223] Exemplarily, if the first information is represented by 3 bits, wherein 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 retransmission of 0 to 0, and the third bit of the 3 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 be any one of "000", "001", "010", "011", "100", "101", "110" and "111". The following Tables 5-1, 5-2, 5-3 and 5-4 respectively list examples when the first information is "111", "011", "001" and "010", and the remaining examples are similar and will not be repeated here.

[0224] Table 5-1

[0225]

[0226] In the example shown in Table 5-1, 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, 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, when the first information indicates that there is a new transmission, the terminal device expects to wake up the second receiver, therefore, in order to ensure that the terminal device successfully receives the new transmission scheduled next time, the terminal device wakes up the second receiver. For another example, when the terminal device does not successfully receive the last scheduling and the value of the NDI of the last scheduling that the terminal device does not successfully receive 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 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 next scheduled new transmission and retransmission of 0 to 0, the terminal device wakes up the second receiver. Other examples are similar and will not be described here.

[0227] Table 5-2

[0228]

[0229] In the example shown in Table 5-2, when the terminal device fails to successfully receive the last scheduling and the value of the NDI 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, 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 scheduling, the terminal device wakes up the second receiver. For another example, when the terminal device fails to successfully receive the last scheduling and the value of the NDI 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, 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, therefore, 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 here.

[0230] Table 5-3

[0231]

[0232] Table 5-4

[0233]

[0234] In this implementation, when the terminal device determines to wake up the second receiver based on the type of retransmission that exists in the next scheduling, and / or when the terminal device determines to wake up the second receiver based on the existence of a new transmission in the next scheduling, the terminal device finally wakes up the second receiver. This is conducive to ensuring that the terminal device can receive specific new transmissions and / or retransmissions in a timely manner, and improving the reliability of transmission.

[0235] 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 was 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.

[0236] Exemplarily, as shown in Table 5-2, 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 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 does not need to wake up the second receiver. Therefore, the terminal device does not wake up the second receiver in the end. For another example, 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 1, 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 does not need to wake up the second receiver. Therefore, the terminal device does not wake up the second receiver in the end.

[0237] Exemplarily, as shown in Table 5-3, when the terminal device fails to successfully receive the last scheduling and the value of the NDI 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 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 does not wake up the second receiver in the end. Other examples are similar and will not be repeated here.

[0238] Exemplarily, as shown in Table 5-4, when the terminal device fails to successfully receive the last scheduling and the value of the NDI 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 wake up the second receiver in the end. Other examples are similar and will not be repeated here.

[0239] In this implementation, when the terminal device determines not to wake up the second receiver based on whether there is a retransmission type in the next 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, the terminal device ultimately does not wake up the second receiver. This reduces the situation where the terminal device is woken up by a new transmission or retransmission that is not expected to be received, which is conducive to saving power consumption of the terminal device.

[0240] In another type of implementation, the first information indicates whether there is a new transmission of which type and whether there is a retransmission of which type.

[0241] 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.

[0242] Exemplarily, if the first information is represented by 4 bits, wherein 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 is an introduction using the first information taking "1111", "0111" and "1011" as examples, and 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:

[0243] Table 6-1

[0244]

[0245]

[0246] 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.

[0247] Table 6-2

[0248]

[0249] Table 6-3

[0250]

[0251] In this implementation, when the terminal device determines to wake up the second receiver based on the new transmission type existing in the next scheduling, and / or the terminal device determines to wake up the second receiver based on the retransmission type existing in the next scheduling, the terminal device finally wakes up the second receiver. This is conducive to ensuring that the terminal device can receive specific new transmissions and / or retransmissions in a timely manner, and improving the reliability of transmission.

[0252] In another embodiment, if the terminal device determines not to wake up the second receiver based on whether a new transmission type exists 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 a retransmission type exists in the next scheduling, then the terminal device ultimately does not wake up the second receiver.

[0253] Exemplarily, as shown in Table 6-2, 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 no 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 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. Therefore, the terminal device does not wake up the second receiver in the end.

[0254] Exemplarily, as shown in Table 6-3, 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 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 no 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. Therefore, the terminal device does not wake up the second receiver in the end.

[0255] In this implementation, when the terminal device determines not to wake up the second receiver based on whether there is a new transmission type in the next 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, the terminal device ultimately does not wake up the second receiver. This reduces the situation where the terminal device is woken up by a new transmission or retransmission that is not expected to be received, which is conducive to saving power consumption of the terminal device.

[0256] 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.

[0257] In one example, when the first information indicates that there is a new process, the terminal device may not consider the type of the new transmission and whether there is a retransmission, and the terminal device wakes up the second receiver to avoid missing the transmission of the new process.

[0258] In another example, when the first information indicates that there is no new process, the terminal device considers the type of new transmission and whether there is retransmission before finally determining whether to wake up the second receiver.

[0259] Exemplarily, 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 of 0 to 1, the third bit of the 5 bits indicates whether there is a new transmission of 1 to 0, the fourth bit of the 5 bits indicates whether there is a retransmission of 0 to 0, and the fifth bit of the 5 bits indicates whether there is a retransmission of 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 of 0 to 1, a new transmission of 1 to 0, a new transmission of 0 to 0, and a retransmission of 1 to 1 in the next scheduling; when the first information is "01111", it indicates that there is no new process, a new transmission of 0 to 1, a new transmission of 1 to 0, a new transmission of 0 to 0, and a retransmission of 1 to 1 in the next scheduling. The decisions of the terminal device on whether to wake up the second receiver are shown in the following Tables 6-4 and 6-5 respectively:

[0260] Table 6-4

[0261]

[0262] Table 6-5

[0263]

[0264] In the example shown in Table 6-4, the first bit of the first information indicates that there is 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.

[0265] In the example shown in Table 6-5, the first bit of the first information indicates that there is no new process, and the terminal device refers to the last 4 bits of the first information to decide whether to wake up the second receiver. The implementation method of the terminal device deciding whether to wake up the second receiver based on the last 4 bits of the first information is similar to the example shown in Table 6-1 above, and is not repeated here.

[0266] 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.

[0267] 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 to indicate the process number based on the number of processes indicated in the DCI of the next schedule. Among them, the process indicated by the DCI of the next schedule is a process of the same user group, which can be a process in the same terminal device or a process in a different terminal device, which is not limited here. For example, if the number of processes indicated in the DCI of the next schedule 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 DCI of the next schedule 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 DCI of the next schedule is 5 to 8, 3 bits are set in the first information to indicate the process number. And so on.

[0268] 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 2 processes in the DCI scheduled next time, the first information can be implemented with 3 bits. Among them, the first bit of the 3 bits indicates the process number, and the last 2 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 2 processes in the DCI scheduled next time, the first information can be implemented with 4 bits. Among them, the first bit of the 4 bits indicates the process number, and the last 3 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.

[0269] 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 a process, including: a new process, which refers to a process that has never appeared, that is, a process for the first transmission; a process of 0 to 1, which refers to a process that needs to receive a new transmission of 0 to 1 for the next scheduling; a process of 1 to 0, which refers to a process that needs to receive a new transmission of 1 to 0 for the next scheduling; a process of 0 to 0, which refers to a process that needs to receive a retransmission of 0 to 0 for the next scheduling; a process of 1 to 1, which refers to a process that needs to receive a retransmission of 1 to 1 for the next scheduling.

[0270] Exemplarily, taking the next scheduled DCI indicating scheduling information of two processes (for example, process 0 and process 1), and taking 4 bits to represent the first information as an example, the first information can be implemented in the following manner:

[0271] For process 0: the first bit of the 4 bits is "0", indicating 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 a process from 0 to 1; "010" indicates that process 0 is a process from 1 to 0; "011" indicates that process 0 is a process from 0 to 0; and "100" indicates that process 0 is a process from 1 to 1.

[0272] For process 1: the first bit of the 4 bits is "1", indicating the process number is 1, and 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 a process from 0 to 1; "010" indicates that process 1 is a process from 1 to 0; "011" indicates that process 1 is a process from 0 to 0; and "100" indicates that process 1 is a process from 1 to 1.

[0273] In this embodiment, by adding a bit to indicate the process number in the first information, it is possible to individually indicate which 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.

[0274] Corresponding to the scheme given in the foregoing 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 foregoing embodiment. The module or unit may 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 implementation details of the scheme, reference may be made to the description of the foregoing method embodiment, which will not be repeated below.

[0275] like Figure 4 FIG. 4 is a schematic diagram of the structure of a communication device 40 provided in this embodiment. It should be understood that the aforementioned Figure 2 The terminal device in the corresponding method embodiment can be based on the Figure 4 The structure of the communication device 40 is shown.

[0276] The communication device 40 includes at least one processor 401, at least one memory 402, and at least two transceivers 403. The processor 401, the memory 402, and the transceiver 403 are connected. Optionally, the communication device 40 may also include an input device 405, an output device 406, and one or more antennas 404. The antenna 404 is connected to the transceiver 403, and the input device 405 and the output device 406 are connected to the processor 401.

[0277] 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 the execution is controlled by the processor 401. The various computer program codes executed can also be regarded as the driver program of the processor 401. It should be understood that in this embodiment, Figure 4 Only one memory and one processor are shown, but in actual applications, the communication device 40 may have multiple processors or multiple memories, which is not limited here. In addition, the memory 402 may also be referred to as a storage medium or a storage device, etc. The memory 402 may 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.

[0278] 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, and 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, and the receiver Rx of the transceiver 403 is used to receive the radio frequency signal from the antenna 404, and convert the radio frequency signal into a digital baseband signal or a digital intermediate frequency signal, and provide the digital baseband signal or the digital intermediate frequency signal to the processor 401, so that the processor 401 further processes the digital baseband signal or the digital intermediate frequency signal, such as demodulation processing and decoding processing. In addition, the transmitter Tx in the transceiver 403 is also used to receive a modulated digital baseband signal or a digital intermediate frequency signal from the processor 401, and convert the modulated digital baseband signal or the digital intermediate frequency signal into a radio frequency signal, and send the radio frequency signal through one or more antennas 404. It should be understood that the aforementioned transceiver 403 can also be called a transceiver unit, a transceiver, a transceiver device, etc. Optionally, the device used to implement the receiving function in the transceiver unit can be regarded as the receiving unit, and the device used to implement the sending function in the transceiver unit can be regarded as the sending unit, that is, the transceiver unit includes a receiving unit and a sending unit, and the receiving unit can also be called a receiver, an input port, a receiving circuit, etc., and the sending unit can be called a transmitter, a transmitter, or a transmitting circuit, etc. In the present application, the at least two transceivers 403 of the communication device 40 include a first transceiver and a second transceiver, and the working power of the first transceiver is less than the working power of the second transceiver. For an introduction to the first transceiver and the second transceiver, please refer to the previous text. Figure 1B The relevant description is not repeated here.

[0279] The processor 401 may be a baseband processor or a central processing unit (CPU), and the baseband processor and the CPU may be integrated or separated. The processor 401 may be used to implement various functions for the terminal device, such as processing the communication protocol and communication data, or controlling the entire terminal device, executing the software program, and processing the data of the software program; or the processor 401 is used to implement one or more of the above functions.

[0280] 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.

[0281] In one design, the communication device 40 is used to perform the above Figure 2 The method of the terminal device in the corresponding embodiment. The first receiver in the communication device 40 receives a wake-up signal, the wake-up signal includes first information, and the first information is used to indicate whether there is a new transmission and / or whether there is a retransmission in the next scheduling; the processor 401 determines whether to wake up the second receiver of the communication device 40 based on the first information, and the working power of the first receiver is less than the working power of the second receiver.

[0282] 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.

[0283] In a possible implementation manner, 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.

[0284] In a possible implementation manner, 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.

[0285] In a possible implementation manner, 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 processor 401 does not wake up the second receiver.

[0286] In a possible implementation manner, 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 processor 401 wakes up the second receiver.

[0287] In a possible implementation manner, the first information is further used to indicate a new transmission type and / or a retransmission type;

[0288] 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;

[0289] or,

[0290] The type of retransmission 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.

[0291] In one possible implementation, 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.

[0292] In one possible implementation, 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.

[0293] In one 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 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.

[0294] In one possible implementation, 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.

[0295] It should be noted that the specific implementation manner and beneficial effects of this embodiment can refer to the method of the terminal device in the above embodiment, which will not be repeated here.

[0296] like Figure 5 FIG. 5 is a schematic diagram of the structure of another communication device 50 provided in this embodiment. It should be understood that the aforementioned Figure 2 The access network device in the corresponding method embodiment can be based on the Figure 5 The structure of the communication device 50 is shown.

[0297] 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, the memory 502, the transceiver 503, and the network interface 505 are connected via a connecting device, and the antenna 504 is connected to the transceiver 503. The aforementioned connecting device may include various interfaces, transmission lines, or buses, etc., which are not limited in this embodiment.

[0298] The memory 502 is mainly used to store software programs and data. The memory 502 can be independent and connected to the processor 501. Optionally, the memory 502 can be integrated with the processor 501, for example, integrated into one or more chips. The memory 502 can store program codes for executing the technical solutions of the embodiments of the present application, and the execution is controlled by the processor 501. The various computer program codes executed can also be regarded as the driver programs of the processor 501. It should be understood that the embodiments of the present application are not limited to the following: Figure 5 Only one memory and one processor are shown, but in actual applications, the communication device 50 may have multiple processors or multiple memories, which is not limited here. In addition, the memory 502 may also be referred to as a storage medium or a storage device. The memory 502 may 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.

[0299] 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, and 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 will not be described in detail here.

[0300] In addition, the aforementioned processor 501 is mainly used to process the communication protocol and communication data, and to control the entire network device, execute the software program, and process the data of the software program. The communication device 50 may include a baseband processor and a central processing unit. Figure 5The processor 501 in the communication device 50 may integrate the functions of the baseband processor and the central processing unit. The baseband processor and the central processing unit may also be independent processors interconnected by technologies such as buses. The communication device 50 may include multiple baseband processors to adapt to different network formats. The communication device 50 may include multiple central processing units to enhance its processing capabilities. The various components of the communication device 50 may be connected through various buses. The baseband processor may also be described as a baseband processing circuit or a baseband processing chip. The central processing unit may also be described as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built into the processor, or may be stored in the memory in the form of a software program, and the processor executes the software program to implement the baseband processing function.

[0301] In addition, the aforementioned network interface 505 is used to connect the communication device 50 to other communication devices through 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.

[0302] In one design, the communication device 50 is used to perform the aforementioned Figure 2 The method of the access network device in the corresponding embodiment. The processor 501 in the communication device 50 is used to generate a wake-up signal, the wake-up signal includes first information, and the first information is used to indicate whether there is a new transmission and / or whether there is a retransmission in the next scheduling; the transceiver 503 is used to send the wake-up signal, and the first information in the wake-up signal 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.

[0303] 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.

[0304] In a possible implementation manner, the first information is further used to indicate the type of new transmission and / or the type of retransmission; wherein the type of new transmission is used to indicate: the NDI indicating the new data of the last scheduling is 0, and the NDI of the next scheduling is 1; or, the NDI indicating the new data of the last scheduling is 1, and the NDI of the next scheduling is 0;

[0305] or,

[0306] The type of retransmission 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.

[0307] In a possible implementation manner, the first information is also used to indicate an identifier of the process.

[0308] It should be noted that the specific implementation manner and beneficial effects of this embodiment can refer to the method of accessing the network device in the above embodiment, which will not be described in detail here.

[0309] like Figure 6 As shown, the present application also provides a communication device 60. The communication device 60 can be a terminal device or an access network device, or a component of the terminal device or the access network device (for example, an integrated circuit, a chip, etc.). The communication device 60 can also be other communication modules for implementing the method in the method embodiment of the present application.

[0310] The communication device 60 may include a processing module 601 (or a processing unit). Optionally, it may also include an interface module 602 (or a transceiver unit or a transceiver module) and a storage module 603 (or a storage unit). The interface module 602 is used to communicate with other devices. The interface module 602 may be, for example, a transceiver module or an input / output module.

[0311] In one possible design, Figure 6 One or more modules 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 the embodiments of the present application. The processor, memory, and transceiver may be provided separately or integrated into one.

[0312] The communication device 60 has the functions of implementing the terminal device described in the embodiments of the present application. For example, the communication device 60 includes a module or unit or means corresponding to the steps involved in the terminal device described in the embodiments of the present application. The functions or units or 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 above corresponding method embodiment. Please refer to the above text for details. Figure 4 This corresponds to the communication device 40 in the embodiment.

[0313] 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 executing 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. Please refer to the previous text for details. Figure 5 This corresponds to the communication device 50 in the embodiment.

[0314] In addition, the present application provides a computer program product, which includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. For example, the aforementioned Figure 2 For example, to implement the method described above Figure 2 Methods related to access network devices in. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may 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 may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by 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 may be any available medium that a computer can store or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.

[0315] In addition, the present application also provides a computer-readable storage medium, which stores a computer program, which is executed by a processor to implement the above Figure 2 Methods related to terminal devices in.

[0316] In addition, the present application also provides a computer-readable storage medium, which stores a computer program, which is executed by a processor to implement the above Figure 2 Methods related to access network devices in.

[0317] 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.

[0318] Those skilled in the art can 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 is not successfully received is the same as the NDI of the last scheduling indicated by the type of the retransmission, 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 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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