WO2023240515A1

WO2023240515A1 - Energy-saving method and apparatus for terminal device

Info

Publication number: WO2023240515A1
Application number: PCT/CN2022/099041
Authority: WO
Inventors: 付婷
Original assignee: 北京小米移动软件有限公司
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2023-12-21
Also published as: CN117597984A

Abstract

Disclosed in embodiments of the present disclosure are an energy-saving method and apparatus for a terminal device, applied to a communication system. The method comprises: a terminal device being configured to be in a C-DRX mode; the terminal device starting a retransmission timer for an HARQ process, and monitoring a low-power wake-up signal (LP-WUS); the terminal device being in an energy-saving state; if the LP-WUS is monitored before the retransmission timer times out, entering a PDCCH monitoring state from the energy-saving state; if the LP-WUS is not monitored before the retransmission timer times out, maintaining an LP-WUS monitoring state and the energy-saving state. According to the present disclosure, unnecessary PDCCH blind detection can be reduced in an energy-saving state, thereby reducing the energy consumption of a terminal. Moreover, LP-WUS monitoring is used, and when an LP-WUS is monitored, the terminal device is waked up immediately and reenters the PDCCH monitoring state, such that the effect on the delay of data transmission is small, thereby ensuring the transmission delay performance of retransmitted data.

Description

Energy-saving method and device for terminal equipment

Technical field

The present application relates to the field of communication technology, and in particular, to a terminal equipment energy saving method and its device.

Background technique

When the Connected Discontinuous Reception (C-DRX) mode is configured, the downlink retransmission timer (drx-RetransmissionTimerDL) of the downlink HARQ process or the uplink retransmission timer (drx-RetransmissionTimerUL) of the uplink HARQ process ) during operation, the terminal equipment needs to monitor the physical downlink control channel (Physical Downlink Control Channel, PDCCH) normally, which will lead to a waste of energy consumption of the terminal equipment.

Contents of the invention

The embodiment of the present application provides a method and device for energy saving of terminal equipment. After the retransmission timer starts, it can enter the LP-WUS listening state and the energy saving state. In the energy saving state, unnecessary PDCCH blind detection can be reduced, thus enabling Energy saving terminal energy consumption.

In a first aspect, embodiments of the present application provide an energy saving method for a terminal device. The terminal device is configured in C-DRX mode. The method includes:

The terminal device starts a retransmission timer for the HARQ process;

The terminal device monitors the low-power wake-up signal LP-WUS;

Wherein, the terminal equipment is in an energy-saving state, and the LP-WUS is used to instruct the terminal equipment to enter a state of monitoring PDCCH from the energy-saving state.

In the embodiment of the present disclosure, after the retransmission timer starts, the LP-WUS listening state and the energy-saving state can be entered. In the energy-saving state, unnecessary PDCCH blind detection can be reduced, thereby saving terminal energy consumption.

In a second aspect, embodiments of the present application provide another energy-saving method for terminal equipment, which method includes:

When the HARQ process is scheduled for data retransmission, LP-WUS is sent to the terminal device, and the LP-WUS is used to wake up the terminal device to enter a state of monitoring the PDCCH.

In the embodiment of the present disclosure, when the terminal device enters the LP-WUS listening state and the energy-saving state, the network device can use LP-WUS to wake up the terminal device and re-enter the PDCCH monitoring state. Therefore, it has a small impact on the delay of data transmission and can Ensure the transmission delay performance of retransmitted data.

In a third aspect, embodiments of the present application provide a communication device that has some or all of the functions of the terminal device in implementing the method described in the first aspect. For example, the functions of the communication device may have some or all of the functions in this application. The functions in the embodiments may also be used to independently implement any of the embodiments in this application. The functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one implementation, the structure of the communication device may include a transceiver module and a processing module, and the processing module is configured to support the communication device to perform corresponding functions in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may further include a storage module coupled to the transceiver module and the processing module, which stores necessary computer programs and data for the communication device.

As an example, the processing module may be a processor, the transceiver module may be a transceiver or a communication interface, and the storage module may be a memory.

In the fourth aspect, embodiments of the present application provide another communication device that has some or all of the functions of the network device in the method example described in the second aspect. For example, the functions of the communication device may have some of the functions in this application. Or the functions in all embodiments may also be used to implement any one embodiment of the present application independently. The functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In a fifth aspect, embodiments of the present application provide a communication device. The communication device includes a processor. When the processor calls a computer program in a memory, it executes the method described in the first aspect.

In a sixth aspect, embodiments of the present application provide a communication device. The communication device includes a processor. When the processor calls a computer program in a memory, it executes the method described in the second aspect.

In a seventh aspect, embodiments of the present application provide a communication device. The communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device executes The method described in the first aspect above.

In an eighth aspect, embodiments of the present application provide a communication device. The communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device executes The method described in the second aspect above.

In a ninth aspect, embodiments of the present application provide a communication device. The device includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is used to run the code instructions to cause the The device performs the method described in the first aspect.

In a tenth aspect, embodiments of the present application provide a communication device. The device includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is used to run the code instructions to cause the The device performs the method described in the second aspect above.

In an eleventh aspect, embodiments of the present application provide a terminal energy-saving system. The system includes the communication device described in the third aspect and the communication device described in the fourth aspect. Alternatively, the system includes the communication device described in the fifth aspect. And the communication device described in the sixth aspect, or the system includes the communication device described in the seventh aspect and the communication device described in the eighth aspect, or the system includes the communication device described in the ninth aspect and the tenth aspect the communication device.

In a twelfth aspect, embodiments of the present invention provide a computer-readable storage medium for storing instructions used by the above-mentioned terminal equipment. When the instructions are executed, the terminal equipment is caused to execute the above-mentioned first aspect. method.

In a thirteenth aspect, embodiments of the present invention provide a readable storage medium for storing instructions used by the above-mentioned network device. When the instructions are executed, the network device is caused to perform the method described in the second aspect. .

In a fourteenth aspect, the present application also provides a computer program product including a computer program, which when run on a computer causes the computer to execute the method described in the first aspect.

In a fifteenth aspect, the present application also provides a computer program product including a computer program, which when run on a computer causes the computer to execute the method described in the second aspect.

In a sixteenth aspect, the present application provides a chip system, which includes at least one processor and an interface for supporting the terminal device to implement the functions involved in the first aspect, for example, determining or processing the data involved in the above method. and information. In a possible design, the chip system further includes a memory, and the memory is used to store necessary computer programs and data for the terminal device. The chip system may be composed of chips, or may include chips and other discrete devices.

In a seventeenth aspect, this application provides a chip system, which includes at least one processor and an interface for supporting network equipment to implement the functions involved in the second aspect, for example, determining or processing the data involved in the above method. and information. In a possible design, the chip system further includes a memory, and the memory is used to store necessary computer programs and data for the network device. The chip system may be composed of chips, or may include chips and other discrete devices.

In an eighteenth aspect, the present application provides a computer program that, when run on a computer, causes the computer to execute the method described in the first aspect.

In a nineteenth aspect, this application provides a computer program that, when run on a computer, causes the computer to execute the method described in the second aspect.

Description of the drawings

In order to more clearly explain the technical solutions in the embodiments of the present application or the background technology, the drawings required to be used in the embodiments or the background technology of the present application will be described below.

Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present application;

Figure 2 is a schematic flowchart of a terminal equipment energy saving method provided by an embodiment of the present application;

Figure 2a is a schematic flowchart of another energy-saving method for terminal equipment provided by an embodiment of the present application;

Figure 3 is a schematic flowchart of another energy-saving method for terminal equipment provided by an embodiment of the present application;

Figure 4 is a schematic flowchart of another energy-saving method for terminal equipment provided by an embodiment of the present application;

Figure 5 is a schematic flowchart of another energy-saving method for terminal equipment provided by an embodiment of the present application;

Figure 6 is a schematic flowchart of another energy-saving method for terminal equipment provided by an embodiment of the present application;

Figure 7 is a schematic flowchart of another energy-saving method for terminal equipment provided by an embodiment of the present application;

Figure 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 9 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

Figure 10 is a schematic structural diagram of a chip provided by an embodiment of the present application.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of the disclosure as detailed in the appended claims.

The terminology used in the embodiments of the present disclosure is for the purpose of describing specific embodiments only and is not intended to limit the embodiments of the present disclosure. As used in the embodiments of the present disclosure and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be called second information, and similarly, the second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to determining". For the purposes of brevity and ease of understanding, this article is characterizing When referring to a size relationship, the terms used are "greater than" or "less than", "higher than" or "lower than". But for those skilled in the art, it can be understood that: the term "greater than" also covers the meaning of "greater than or equal to", and "less than" also covers the meaning of "less than or equal to"; the term "higher than" covers the meaning of "higher than or equal to". "The meaning of "less than" also covers the meaning of "less than or equal to".

To facilitate understanding, the terminology involved in this application is first introduced.

Discontinuous Reception (DRX) packet-based data flow is usually bursty, with data transmission for a period of time, but no data transmission for a long period of time. When there is no data transmission, you can reduce power consumption by stopping receiving PDCCH (at this time, PDCCH blind detection will be stopped), thereby increasing battery life.

Hybrid Automatic Repeat Request (HARQ) is an error control technology jointly used by Automatic Repeat Request (ARQ) and Forward Error Correction (FEC). Its purpose is to ensure the correct transmission of data packets and improve the reliability of the wireless communication system through the gain generated by the retransmission function and time diversity. After using HARQ, the sender needs to feed back a confirmation message to the receiver to indicate whether the sent data packet has been correctly received by the receiver. If the confirmation message is a positive response ACK (the uplink indication is CRC (Cyclic Redundancy Check, Cyclic Redundancy Check) OK, hereafter collectively referred to as ACK), it means that the data packet has been correctly received by the receiver; if the confirmation message is a negative response NACK ( The uplink indication is CRC ERR (hereinafter collectively referred to as NACK), which indicates that the data packet has not been received correctly by the receiver, and the sender needs to retransmit the data packet as necessary.

In order to better understand the energy-saving method for terminal equipment disclosed in the embodiment of the present application, the communication system to which the embodiment of the present application is applicable is first described below.

Please refer to Figure 1. Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present application. The communication system may include but is not limited to one network device and one terminal device. The number and form of devices shown in Figure 1 are only for examples and do not constitute a limitation on the embodiments of the present application. In actual applications, two or more devices may be included. Network equipment, two or more terminal devices. The communication system shown in Figure 1 includes a network device 101 and a terminal device 102 as an example.

It should be noted that the technical solutions of the embodiments of the present application can be applied to various communication systems. For example: long term evolution (LTE) system, fifth generation (5th generation, 5G) mobile communication system, 5G new radio (NR) system, or other future new mobile communication systems. It should also be noted that the side link in the embodiment of the present application may also be called a side link or a through link.

The network device 101 in the embodiment of this application is an entity on the network side that is used to transmit or receive signals. For example, the network device 101 can be an evolved base station (evolved NodeB, eNB), a transmission point (transmission reception point, TRP), a next generation base station (next generation NodeB, gNB) in an NR system, or other base stations in future mobile communication systems. Or access nodes in wireless fidelity (WiFi) systems, etc. The embodiments of this application do not limit the specific technology and specific equipment form used by the network equipment. The network equipment provided by the embodiments of this application may be composed of a centralized unit (central unit, CU) and a distributed unit (DU). The CU may also be called a control unit (control unit). CU-DU is used. The structure can separate the protocol layers of network equipment, such as base stations, and place some protocol layer functions under centralized control on the CU. The remaining part or all protocol layer functions are distributed in the DU, and the CU centrally controls the DU.

The terminal device 102 in the embodiment of this application is an entity on the user side that is used to receive or transmit signals, such as a mobile phone. Terminal equipment can also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal equipment (mobile terminal, MT), etc. The terminal device can be a car with communication functions, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality ( augmented reality (AR) terminal equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical surgery, smart grid ( Wireless terminal equipment in smart grid, wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, wireless terminal equipment in smart home, etc. The embodiments of this application do not limit the specific technology and specific equipment form used by the terminal equipment.

In side-link communication, there are 4 side-link transmission modes. Side link transmission mode 1 and side link transmission mode 2 are used for terminal device direct (device-to-device, D2D) communication. Side-link transmission mode 3 and side-link transmission mode 4 are used for V2X communications. When side-link transmission mode 3 is adopted, resource allocation is scheduled by the network device 101. Specifically, the network device 101 can send resource allocation information to the terminal device 102, and then the terminal device 102 allocates resources to another terminal device, so that the other terminal device can send information to the network device 101 through the allocated resources. . In V2X communication, a terminal device with better signal or higher reliability can be used as the terminal device 102 . The first terminal device mentioned in the embodiment of this application may refer to the terminal device 102, and the second terminal device may refer to the other terminal device.

It can be understood that the communication system described in the embodiments of the present application is to more clearly illustrate the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application. As those of ordinary skill in the art will know, With the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

It should be noted that the terminal device energy saving method provided in any embodiment of this application can be executed alone, or in combination with possible implementation methods in other embodiments, or in combination with any technical solution in related technologies. are executed together.

The energy-saving method and device for terminal equipment provided by this application will be introduced in detail below with reference to the accompanying drawings.

Please refer to Figure 2. Figure 2 is a schematic flowchart of an energy saving method for terminal equipment provided by an embodiment of the present application. The terminal equipment energy saving method is executed by the terminal equipment. As shown in Figure 2, the method may include but is not limited to the following steps:

S21: The terminal device starts a retransmission timer for the HARQ process.

The terminal device can be configured in DRX mode to stop monitoring the PDCCH channel for a period of time. The DRX mode can include idle DRX mode and connected DRX (Connected DRX, C-DRX) mode. Among them, Idle-DRX mode refers to discontinuous reception when the terminal device is in the IDLE state. The C-DRX mode refers to discontinuous reception when the terminal device is in the RRC-CONNECTED state.

It should be noted that the HARQ process may include uplink (UL) HARQ and downlink (downlink, DL) HARQ.

For each DLHARQ process, when C-DRX mode is configured, a period of transmission time can be reserved for the HARQ feedback (feedback) sent by the terminal device to the network device to reach the network device, and a DLHARQ is configured during each DL HARQ process. Round Trip Time (RTT) timer (drx-HARQ-RTT-TimerDL). When the terminal device receives a downlink data transmission packet and the CRC check fails, it needs to feed back negative acknowledgment (NACK) information to the network device. The terminal device does not need to listen to the PDCCH when drx-HARQ-RTT-TimerDL is running. After the terminal device times out drx-HARQ-RTT-TimerDL, and the terminal returns NACK to the HARQ process, the terminal can start the retransmission downlink HARQ process to receive retransmitted data from the network device. However, since the terminal device is not sure of the specific time when the network device delivers HARQ retransmission data, in order to save energy consumption of the terminal device, the terminal device cannot continue to wait, so the downlink retransmission timer (drx) of the retransmission downlink HARQ process can be started. -RetransmissionTimerDL), continue to monitor the PDCCH before the downlink retransmission timer expires.

For each ULHARQ process, when the C-DRX mode is configured, the ULHARQ RTT timer (drx-HARQ-RTT-TimerUL) can be started after the terminal device sends an uplink data packet to the network device. After drx-HARQ-RTT-TimerUL times out, the retransmission uplink HARQ process can be started to retransmit data to the network device. However, since the terminal device is not sure whether the retransmission to the network device is correct, in order to save the energy consumption of the terminal device, the terminal device cannot continue to wait, so the uplink retransmission timer (drx-RetransmissionTimerDL) of the retransmission uplink HARQ process can be started. Continue to monitor the PDCCH before the uplink retransmission timer expires.

S22: The terminal device monitors the low-power wake-up signal LP-WUS.

In this embodiment of the present application, the terminal device is in an energy-saving state. Low power wake up signal (LP-WUS) is used to instruct the terminal device to enter the state of monitoring PDCCH from the energy saving state.

In this disclosure, when the terminal device is configured in C-DRX mode and the retransmission timer is enabled for the HARQ process, in order to reduce the energy consumption of the terminal device and extend the battery life of the terminal device, the terminal device can enter Low power wake up signal (LP-WUS) listening state, and the terminal device enters the energy-saving state, that is, the host of the terminal device enters the energy-saving state. For example, the host of the terminal device goes to sleep.

Optionally, the sleep state may include: one of deep sleep state (deep sleep), light sleep state (light sleep), and micro sleep state (micro sleep). Optionally, the terminal device can be in microsleep. It should be noted that the micro sleep state is a sleep state in a shallower level of sleep and can quickly re-enter and wake up. It should be noted that the power consumption of the terminal device in the deep sleep state is lower than the power consumption in the light sleep state. The power consumption in the micro sleep state is lower than the power consumption in the light sleep state. The power consumption of the terminal device in the micro sleep state is higher than that in the light sleep state. Lower than the power consumption in the state of monitoring PDCCH. Optionally, the difference between the power consumption in the PDCCH monitoring state and the power consumption in the micro-sleep state can also be limited to be greater than a set value.

In this disclosure, when the terminal device is in the micro-sleep state, it can quickly switch from the sleep state to the normal working activation state after monitoring LP-WUS. Therefore, the conversion time is very short, and the time for the terminal device to re-awaken from the energy-saving state is shortened. , to facilitate PDCCH monitoring as soon as possible and avoid the loss of information or data.

Optionally, when the terminal device is configured in the C-DRX mode, it may also be configured to skip monitoring the PDCCH at the same time. Optionally, the terminal device can receive downlink control information (DCI) issued by the network device, and the DCI can instruct the terminal device to skip monitoring of PDCCH (PDCCH skipping) in the next set period. Optional values for a certain time period are configured by high-level signaling. It should be noted that even if the terminal device is configured with PDCCH skipping, the PDCCH skipping cannot be applied while the retransmission timer is running.

In this disclosure, a low-power receiver is provided on the terminal device. When the host is in an energy-saving state, the low-power receiver is turned on to specifically receive the LP WUS signal sent by the network device to determine whether the host needs to be restarted. Since the power of the low-power receiver is very small, the purpose of energy saving of the terminal equipment can be achieved.

In this disclosure, since the terminal device is in the energy-saving state, the PDCCH will not be monitored. In this case, in order to enable the terminal device to monitor the LP-WUS in the energy-saving state, optionally, the LP-WUS sent by the network device can As a sequence signal, the sequence signal often has strong autocorrelation and poor cross-correlation. Through autocorrelation detection, the monitoring of LP-WUS can be realized. For example, LP-WUS can be a sequence signal composed of 0 and 1. Alternatively, the terminal device can detect the energy of the carrier. If the energy is lower than a certain threshold, it can determine that the sequence signal of the carrier is '0'0. If the energy is higher than the set threshold, it can determine the sequence signal of the carrier. is '1'. For example, '0' can be used to indicate that the terminal equipment does not need to wake up in the next DRX cycle, and '1' can be used to indicate that the terminal equipment needs to wake up in the next DRX cycle to enter the PDCCH listening state.

In the embodiment of the present disclosure, after the retransmission timer starts, the LP-WUS listening state and the energy-saving state can be entered. In the energy-saving state, unnecessary PDCCH blind detection can be reduced, thereby saving terminal energy consumption. Furthermore, the energy-saving state of the terminal device can be set to the micro-sleep state. In the micro-sleep state, after monitoring the LP-WUS terminal device, the terminal device can quickly switch from the energy-saving state to the normal working activation state. The conversion time is very short, shortening the terminal equipment's operation time. The time to re-awaken from the energy-saving state is to facilitate PDCCH monitoring as soon as possible to avoid the loss of information or data.

Please refer to Figure 2a. Figure 2a is a schematic flowchart of an energy saving method for terminal equipment provided by an embodiment of the present application. The terminal equipment energy saving method is executed by the terminal equipment. As shown in Figure 2a, the method may include but is not limited to the following steps:

S21a: The terminal device starts a retransmission timer for the HARQ process.

Among them, the terminal device can be configured in C-DRX mode, that is, the terminal device is in discontinuous reception in the RRC-CONNECTED state.

S22a, the terminal device monitors LP-WUS.

In this embodiment of the present application, the terminal device is in an energy-saving state. LP-WUS is used to instruct the terminal equipment to enter the state of monitoring PDCCH from the energy saving state.

For the specific introduction of steps S21a to S22a, please refer to the relevant content records in the above embodiments, and will not be described again here.

S23a, the terminal device monitors LP-WUS before the retransmission timer expires, and then enters the state of monitoring the physical downlink control channel PDCCH from the energy saving state.

The terminal device continues to monitor the LP-WUS sent by the network device before the retransmission timer expires. That is to say, the terminal device continues to monitor the LP-WUS sent by the network device while the retransmission timer is running.

Before the retransmission timer expires, the terminal device monitors LP-WUS, indicating that the network device needs to send DCI to the terminal device. The terminal device needs to enter the state of monitoring PDCCH at this time to facilitate blind detection of PDCCH. On the detected PDCCH Receive DCI sent by network devices.

It should be noted that after the terminal equipment re-enters the PDCCH monitoring state, the terminal equipment will stop monitoring LP-WUS. That is to say, while the terminal equipment enters the PDCCH monitoring state, the terminal equipment also exits the LP-WUS state.

In the embodiment of the present disclosure, after the retransmission timer starts, the LP-WUS listening state and the energy-saving state can be entered. In the energy-saving state, unnecessary PDCCH blind detection can be reduced, thereby saving terminal energy consumption. At the same time, using LP-WUS monitoring, when LP-WUS is monitored, the terminal device wakes up immediately and re-enters the state of monitoring PDCCH. Therefore, it has less impact on the delay of data transmission and can ensure the transmission of retransmitted data. Latency performance. Furthermore, the energy-saving state of the terminal device can be set to the micro-sleep state. In the micro-sleep state, after monitoring the LP-WUS terminal device, the terminal device can quickly switch from the energy-saving state to the normal working activation state. The conversion time is very short, shortening the terminal equipment's operation time. The time to re-awaken from the energy-saving state is to facilitate PDCCH monitoring as soon as possible to avoid the loss of information or data.

Please refer to FIG. 3 , which is a flow chart of another energy saving method for terminal equipment provided by an embodiment of the present disclosure. The terminal equipment energy saving method is executed by the terminal equipment, and the method includes but is not limited to the following:

S31: The terminal device starts a retransmission timer for the HARQ process.

S32, the terminal device monitors LP-WUS.

For the specific introduction of steps S31 to S32, please refer to the relevant content records in the above embodiments, and will not be described again here.

S33, the terminal device monitors the LP-WUS before the retransmission timer expires, and then enters the PDCCH monitoring state from the energy saving state.

S34, if the terminal device does not monitor LP-WUS before the retransmission timer expires, it maintains the LP-WUS monitoring state and energy-saving state.

The terminal device may not be able to monitor LP-WUS before the retransmission timer expires. In this case, the terminal device always maintains the LP-WUS listening state and the energy-saving state to prevent the terminal device from entering the PDCCH monitoring state, which may cause The problem of increased consumption.

Please refer to FIG. 4 , which is a flow chart of another energy saving method for terminal equipment provided by an embodiment of the present disclosure. The terminal equipment energy saving method is executed by the terminal equipment. The method includes but is not limited to the following:

S41: The terminal device starts the uplink retransmission timer for the uplink HARQ process.

For scenarios where the HARQ process is an uplink HARQ process, after drx-HARQ-RTT-TimerUL times out, the uplink retransmission timer (drx-RetransmissionTimerUL) for retransmitting the uplink HARQ process can be started.

S42, the terminal device monitors LP-WUS.

In this disclosure, after drx-RetransmissionTimerUL is turned on, the terminal device can enter the LP-WUS listening state and energy-saving state in order to save energy. For an introduction to the LP-WUS listening state and energy-saving state in this disclosure, please refer to the relevant content records in the above embodiments, and will not be described again here.

For the specific introduction of steps S41 to S42, please refer to the relevant content records in the above embodiments, and will not be described again here.

S43, the terminal equipment monitors LP-WUS before the uplink retransmission timer expires, and then enters the PDCCH monitoring state from the energy saving state.

S44, if the terminal device does not monitor LP-WUS before the uplink retransmission timer times out, it maintains the LP-WUS monitoring state and energy-saving state.

That is to say, if the terminal device monitors LP-WUS during the operation of the uplink retransmission timer, the terminal device wakes up from the energy-saving state, that is, the sleep state, and enters the state of monitoring the PDCCH. If the terminal device does not monitor LP-WUS, the terminal device always maintains the LP-WUS listening state and the energy-saving state during the operation of the uplink retransmission timer to prevent the terminal device from entering the PDCCH monitoring state, resulting in increased energy consumption.

Please refer to FIG. 5 , which is a flow chart of another energy saving method for terminal equipment provided by an embodiment of the present disclosure. The terminal equipment energy saving method is executed by the terminal equipment. The method includes but is not limited to the following:

S51: The terminal device starts the downlink retransmission timer for the downlink HARQ process.

, For the scenario where the HARQ process is a downlink HARQ process, after the drx-HARQ-RTT-TimerDL times out, and the terminal feeds back NACK to the HARQ process, the terminal can start retransmitting the downlink HARQ process to receive retransmitted data from the network device. However, since the terminal device is not sure of the specific time when the network device delivers HARQ retransmission data, in order to save energy consumption of the terminal device, the terminal device cannot continue to wait, so the downlink retransmission timer (drx) of the retransmission downlink HARQ process can be started. -RetransmissionTimerDL).

S52, the terminal device monitors LP-WUS.

In this disclosure, after drx-RetransmissionTimerDL is turned on in this disclosure, the terminal device can enter the LP-WUS listening state and energy-saving state in order to save energy. For an introduction to the LP-WUS listening state and energy-saving state in this disclosure, please refer to the relevant content records in the above embodiments, and will not be described again here.

S53, the terminal equipment monitors LP-WUS before the downlink retransmission timer expires, and then enters the PDCCH monitoring state from the energy saving state.

S54, if the terminal device does not monitor LP-WUS before the downlink retransmission timer times out, it maintains the LP-WUS monitoring state and energy-saving state.

That is to say, if the terminal equipment monitors LP-WUS during the operation of the downlink retransmission timer, the terminal equipment will wake up from the energy-saving state, that is, the sleep state, and enter the state of monitoring PDCCH. If the terminal device does not monitor LP-WUS, the terminal device always maintains the LP-WUS listening state and the energy-saving state during the operation of the downlink retransmission timer to prevent the terminal device from entering the PDCCH monitoring state, resulting in increased energy consumption.

Please refer to FIG. 6 , which is a flow chart of another energy saving method for terminal equipment provided by an embodiment of the present disclosure. The terminal equipment energy saving method is executed by the terminal equipment. The method includes but is not limited to the following:

S61: The terminal device starts a retransmission timer for the HARQ process.

S62, the terminal device monitors LP-WUS.

S63, the terminal device monitors the LP-WUS before the retransmission timer expires, and then enters the PDCCH monitoring state from the energy saving state.

For the specific introduction of steps S61 to S63, please refer to the relevant content records in the above embodiments, and will not be described again here.

S64: The terminal device receives the retransmission scheduling information of the HARQ process sent by the network device through the PDCCH.

When it is determined that the network device needs to schedule the HARQ process for data retransmission, the network device can send retransmission scheduling information to the terminal device through the PDCCH. Correspondingly, the terminal device can receive the retransmission scheduling information sent by the network device by monitoring the PDCCH.

It should be noted that the HARQ process may include uplink HARQ and downlink HARQ. When the network device schedules the uplink HARQ process for data retransmission, the terminal device receives the retransmission scheduling information for scheduling the uplink HARQ process sent by the network device through the 5PDCCH. When the network device schedules the downlink HARQ process for data retransmission, the terminal device receives the retransmission scheduling information for scheduling the downlink HARQ process sent by the network device through the 5PDCCH.

S65, if the terminal device does not monitor LP-WUS before the retransmission timer expires, it maintains the LP-WUS monitoring state and energy-saving state.

For a specific introduction to step S65, please refer to the relevant content records in the above embodiments, and will not be described again here.

Corresponding to the foregoing embodiments on the terminal device side, embodiments of the present disclosure also propose a terminal device energy saving method executed by the network side device; those skilled in the art can understand that the method of the network side device is the same as that of the terminal device. The method corresponds to the method on the terminal device side; therefore, the explanation and expression on the terminal device side will not be repeated in the embodiment of the network side device.

Please refer to FIG. 7 , which is a flow chart of another energy saving method for terminal equipment provided by an embodiment of the present disclosure. The terminal device energy saving method is executed by the network device. The method includes but is not limited to the following:

S71. When the HARQ process is scheduled for data retransmission, LP-WUS is sent to the terminal device. The LP-WUS is used to instruct the terminal device to enter the PDCCH monitoring state from the energy saving state.

In this disclosure, when the terminal device is configured in C-DRX mode and the retransmission timer is enabled for the HARQ process, in order to reduce the energy consumption of the terminal device and extend the battery life of the terminal device, the terminal device can enter LP-WUS listening state, and the terminal device enters the energy-saving state, that is, the host of the terminal device enters the energy-saving state. For example, the host of the terminal device goes to sleep.

When the network device needs to schedule the HARQ process for data retransmission, in order to wake up the terminal device from the energy-saving state and enter the state of monitoring the PDCCH to retransmit HARQ, the network device can send LP-WUS to the terminal device, and accordingly the terminal device listens to the LP-WUS can enter the PDCCH monitoring state from the energy saving state.

Optionally, the terminal device energy saving method provided by the embodiment of the present disclosure may also include the following steps:

S72: Send HARQ retransmission scheduling information to the terminal device through the PDCCH.

It should be noted that the HARQ process may include uplink HARQ and downlink HARQ.

For each DLHARQ process, when C-DRX mode is configured, the terminal device does not need to listen to PDCCH when drx-HARQ-RTT-TimerDL is running. The terminal device times out after drx-HARQ-RTT-TimerDL and the terminal is HARQ If the process returns NACK, the terminal can start the retransmission downlink HARQ process to receive retransmitted data from the network device. However, since the terminal device is not sure of the specific time for the network device to issue HARQ retransmission data, in order to save the energy consumption of the terminal device, the terminal device cannot continue to wait, so the drx-RetransmissionTimerDL of the retransmission downlink HARQ process can be started.

For each ULHARQ process, when C-DRX mode is configured, drx-HARQ-RTT-TimerUL can be started after the terminal device sends an uplink data packet to the network device. After drx-HARQ-RTT-TimerUL times out, the retransmission uplink HARQ process can be started to retransmit data to the network device. However, since the terminal device is not sure whether the retransmission to the network device is correct, in order to save the energy consumption of the terminal device, the terminal device cannot wait continuously, so drx-RetransmissionTimerDL can be started.

Optionally, for the uplink HARQ process, there may be abnormal situations. For example, in the downlink HARQ process, the terminal device may fail the CRC check, or the data may not be received within the preset time. The network device can receive feedback from the terminal device. NACK, the network device can determine that the data transmission is abnormal. In this case, the network device can schedule the downlink HAQ process to retransmit the data. For example, in the uplink HARQ process, data upload may fail. That is, the network device does not receive the uploaded data within the preset time, and it can be determined that the data transmission is abnormal. In this case, the network device can schedule the downlink HAQ process. Perform data retransmission.

For the uplink HARQ process, the network device can send retransmission scheduling information for scheduling the uplink HARQ process to the terminal device through the PDCCH. For the downlink HARQ process, the network device can send retransmission scheduling information for scheduling the downlink HARQ process to the terminal device.

In the above embodiments provided by the present application, the methods provided by the embodiments of the present application are introduced from the perspectives of network equipment and first terminal equipment respectively. In order to implement each function in the method provided by the above embodiments of the present application, the network device and the first terminal device may include a hardware structure and a software module to implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. . A certain function among the above functions can be executed by a hardware structure, a software module, or a hardware structure plus a software module.

Please refer to FIG. 8 , which is a schematic structural diagram of a communication device 80 provided by an embodiment of the present application. The communication device 80 shown in FIG. 8 may include a transceiver module 81 and a processing module 82. The transceiving module 81 may include a sending module and/or a receiving module. The sending module is used to implement the sending function, and the receiving module is used to implement the receiving function. The transceiving module 81 may implement the sending function and/or the receiving function.

The communication device 80 may be a terminal device, a device in the terminal device, or a device that can be used in conjunction with the terminal device. Alternatively, the communication device 80 may be a network device, a device in the network device, or a device that can be used in conjunction with the network device.

The communication device 80 is a terminal device:

The processing module 82 is used to start a retransmission timer for the HARQ process and monitor the low-power wake-up signal LP-WUS, where the terminal device is in an energy-saving state, and LP-WUS is used to instruct the terminal device to enter a state of monitoring PDCCH from the energy-saving state;

Optionally, the processing module 82 is also configured for the terminal device to enter a state of monitoring the physical downlink control channel PDCCH from the energy saving state before the retransmission timer expires.

Optionally, while being configured in the C-DRX mode, the terminal device is also configured to skip monitoring the PDCCH.

Optionally, the energy-saving state of the terminal device is a sleep state.

Optionally, the processing module 82 is also configured to maintain the LP-WUS listening state and the energy-saving state if the LP-WUS is not monitored before the retransmission timer expires.

Optionally, the HARQ process is an uplink HARQ process. The processing module 82 is also used to start an uplink retransmission timer for the uplink HARQ process. When the LP-WUS is not monitored during the running of the uplink retransmission timer, the process is in LP -WUS listening state and energy saving state.

Optionally, the HARQ process is a downlink HARQ process. The processing module 82 is also used to start a downlink retransmission timer for the downlink HARQ process. When the LP-WUS is not monitored during the running of the downlink retransmission timer, the process is in LP -WUS listening state and energy saving state.

Optionally, the transceiving module 81 is configured to receive the retransmission scheduling information of the HARQ process sent by the network device by monitoring the PDCCH.

Optionally, the transceiver module 81 is also configured to receive retransmission scheduling information for scheduling the uplink HARQ process sent by the network device through the PDCCH when the HARQ process is an uplink HARQ process.

Optionally, the transceiver module 81 is also configured to receive retransmission scheduling information for scheduling the downlink HARQ process sent by the network device through the PDCCH when the HARQ process is a downlink HARQ process.

The communication device 80 is a network device:

The transceiver module 81 is configured to send LP-WUS to the terminal device when the HARQ process is scheduled for data retransmission. The LP-WUS is used to wake up the terminal device to enter a state of monitoring the PDCCH.

Optionally, the transceiver module 81 is also configured to send the retransmission scheduling information of the HARQ process to the terminal device through the PDCCH.

Optionally, the HARQ process includes an uplink HARQ process and a downlink HARQ process,

The transceiver module 81 is also used to send retransmission scheduling information for scheduling the uplink HARQ process to the terminal device when the HARQ process is an uplink HARQ process;

The transceiver module 81 is also configured to send retransmission scheduling information for scheduling the downlink HARQ process to the terminal device when the HARQ process is a downlink HARQ process.

Please refer to FIG. 9 , which is a schematic structural diagram of another communication device 90 provided by an embodiment of the present application. The communication device 90 may be a network device, a terminal device, a chip, a chip system, or a processor that supports a network device to implement the above method, or a chip, a chip system, or a processor that supports a terminal device to implement the above method. Processor etc. The device can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.

Communication device 90 may include one or more processors 91. The processor 91 may be a general-purpose processor or a special-purpose processor, or the like. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data. The central processor can be used to control communication devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) and execute computer programs. , processing data for computer programs.

Optionally, the communication device 90 may also include one or more memories 92, on which a computer program 93 may be stored. The processor 91 executes the computer program 93, so that the communication device 90 performs the steps described in the above method embodiments. method. Optionally, the memory 92 may also store data. The communication device 90 and the memory 92 can be provided separately or integrated together.

Optionally, the communication device 90 may also include a transceiver 94 and an antenna 95 . The transceiver 94 may be called a transceiver unit, a transceiver, a transceiver circuit, etc., and is used to implement transceiver functions. The transceiver 94 may include a receiver and a transmitter. The receiver may be called a receiver or a receiving circuit, etc., used to implement the receiving function; the transmitter may be called a transmitter, a transmitting circuit, etc., used to implement the transmitting function.

Optionally, the communication device 90 may also include one or more interface circuits 96. The interface circuit 96 is used to receive code instructions and transmit them to the processor 91 . The processor 91 executes the code instructions to cause the communication device 90 to perform the method described in the above method embodiment.

The communication device 90 is a terminal device: the processor 91 is used to execute steps S21 to S22 in FIG. 2; execute steps S31 to S33 in FIG. 3; steps S41 to 43 in FIG. 4; and step S51 in FIG. 5. ~ Step S53; Step S61 ~ Step 62 in Figure 6; Step 64. The transceiver 94 is used to execute Step S63 in Figure 6.

The communication device 90 is a network device: the transceiver 94 is used to perform steps S71 and S72 in FIG. 7 .

In one implementation, the processor 91 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together. The above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.

In one implementation, the processor 91 may store a computer program 93, and the computer program 93 runs on the processor 91, causing the communication device 90 to perform the method described in the above method embodiment. The computer program 93 may be solidified in the processor 91, in which case the processor 91 may be implemented by hardware.

In one implementation, the communication device 90 may include a circuit, and the circuit may implement the functions of sending or receiving or communicating in the foregoing method embodiments. The processor and transceiver described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication device described in the above embodiments may be a network device or a terminal device, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited by FIG. 9 . The communication device may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) Independent integrated circuit IC, or chip, or chip system or subsystem;

(2) A collection of one or more ICs. Optionally, the IC collection may also include storage components for storing data and computer programs;

(3)ASIC, such as modem;

(4) Modules that can be embedded in other devices;

(5) Receivers, terminal equipment, intelligent terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.;

(6) Others, etc.

For the case where the communication device may be a chip or a chip system, refer to the schematic structural diagram of the chip shown in FIG. 10 . The chip 100 shown in FIG. 10 includes a processor 1001 and an interface 1002. The number of processors 1001 may be one or more, and the number of interfaces 1002 may be multiple.

For the case where the chip is used to implement the functions of the terminal device in the embodiment of this application:

Processor 1001 is used to start the retransmission timer for the HARQ process and enter the low-power wake-up signal LP-WUS listening state and the energy-saving state. The terminal device is in the energy-saving state, and LP-WUS is used to instruct the terminal device to enter from the energy-saving state. Monitor the status of PDCCH.

Optionally, the processor 1001 is also configured to monitor the LP-WUS before the retransmission timer expires, and then enter the PDCCH monitoring state from the energy saving state.

Optionally, the energy-saving state of the terminal device is a sleep state.

Optionally, the processor 1001 is also configured to maintain the LP-WUS listening state and the energy-saving state if the LP-WUS is not heard before the retransmission timer expires.

Optionally, the HARQ process is an uplink HARQ process. The processor 1001 is also used to start an uplink retransmission timer for the uplink HARQ process; when the LP-WUS is not monitored during the running of the uplink retransmission timer, the processor 1001 is in LP -WUS listening state and energy saving state.

Optionally, the HARQ process is a downlink HARQ process. The processor 1001 is also used to start a downlink retransmission timer for the downlink HARQ process; when the LP-WUS is not monitored during the running of the downlink retransmission timer, the processor 1001 is in LP -WUS listening state and energy saving state.

Optionally, the interface 1002 is configured to receive the retransmission scheduling information of the HARQ process sent by the network device through the PDCCH.

Optionally, the interface 1002 is also used to receive the retransmission scheduling information for scheduling the uplink HARQ process sent by the network device through the PDCCH when the HARQ process is an uplink HARQ process.

Optionally, the interface 1002 is also used when the HARQ process is a downlink HARQ process, and receives the retransmission scheduling information sent by the network device to schedule the downlink HARQ process through the PDCCH.

In the embodiment of the present disclosure, after the retransmission timer starts, the LP-WUS listening state and the energy-saving state can be entered. In the energy-saving state, unnecessary PDCCH blind detection can be reduced, thereby saving terminal energy consumption. At the same time, using LP-WUS monitoring, when LP-WUS is monitored, the terminal device wakes up immediately and re-enters the state of monitoring PDCCH. Therefore, it has less impact on the delay of data transmission and can ensure the transmission of retransmitted data. Latency performance. Furthermore, the energy-saving state of the terminal device can be set to the micro-sleep state. In the micro-sleep state, after monitoring the LP-WUS terminal device, the terminal device can quickly switch from the energy-saving state to the normal working activation state. The conversion time is very short, shortening the terminal equipment's operation time. The time to re-awaken from the energy-saving state is to facilitate PDCCH monitoring as soon as possible and avoid the loss of information or data. For the situation where the chip is used to implement the functions of the network device in the embodiment of the present application:

The interface 1002 is used to send LP-WUS to the terminal device when the HARQ process is scheduled for data retransmission. The LP-WUS is used to wake the terminal device into a state of monitoring the PDCCH.

Optionally, the interface 1002 is used to send retransmission scheduling information to the terminal device through the PDCCH.

Optionally, the HARQ process includes an uplink HARQ process and a downlink HARQ process.

The interface 1002 is also used to send retransmission scheduling information of the uplink HARQ process to the terminal device through the PDCCH when the HARQ process is an uplink HARQ process;

The interface 1002 is also used to send retransmission scheduling information of the downlink HARQ process to the terminal device through the PDCCH when the HARQ process is a downlink HARQ process.

Optionally, the chip also includes a memory 1003, which is used to store necessary computer programs and data.

Those skilled in the art can also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and overall system design requirements. Those skilled in the art can use various methods to implement the described functions for each specific application, but such implementation should not be understood as exceeding the protection scope of the embodiments of the present application.

Embodiments of the present application also provide an energy-saving system for terminal equipment. The system includes a communication device as a terminal device and a communication device as a network device in the embodiment of FIG. 8. Alternatively, the system includes a communication device as a terminal device in the embodiment of FIG. 9. communication devices and communication devices as network equipment.

This application also provides a readable storage medium on which instructions are stored. When the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.

This application also provides a computer program product, which, when executed by a computer, implements the functions of any of the above method embodiments.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program may be stored in or transferred from one computer-readable storage medium to another, for example, the computer program may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The usable media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks, SSD)) etc.

Persons of ordinary skill in the art can understand that the first, second, and other numerical numbers involved in this application are only for convenience of description and are not used to limit the scope of the embodiments of this application and also indicate the order.

At least one in this application can also be described as one or more, and the plurality can be two, three, four or more, which is not limited by this application. In the embodiment of this application, for a technical feature, the technical feature is distinguished by "first", "second", "third", "A", "B", "C" and "D", etc. The technical features described in "first", "second", "third", "A", "B", "C" and "D" are in no particular order or order.

The corresponding relationships shown in each table in this application can be configured or predefined. The values of the information in each table are only examples and can be configured as other values, which are not limited by this application. When configuring the correspondence between information and each parameter, it is not necessarily required to configure all the correspondences shown in each table. For example, in the table in this application, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also be other names understandable by the communication device, and the values or expressions of the parameters may also be other values or expressions understandable by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables. wait.

Predefinition in this application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, solidification, or pre-burning.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

An energy saving method for terminal equipment, characterized in that it is executed by the terminal equipment, and the terminal equipment is in the connected discontinuous reception C-DRX mode. The method includes:

The terminal device starts a retransmission timer for the hybrid automatic repeat request HARQ process;

The terminal device monitors the low-power wake-up signal LP-WUS,

Wherein, the terminal equipment is in an energy-saving state, and the LP-WUS is used to instruct the terminal equipment to enter a PDCCH monitoring state from the energy-saving state.
The method of claim 1, further comprising:

If the terminal equipment monitors the LP-WUS before the retransmission timer expires, it will enter a state of monitoring the PDCCH from the energy-saving state.
The method according to claim 1 or 2, characterized in that, the method further includes:

If the terminal device does not listen to the LP-WUS before the retransmission timer expires, the LP-WUS listening state and the energy-saving state are maintained.
The method according to claim 3, characterized in that the HARQ process is an uplink HARQ process, and the method further includes:

Start the uplink retransmission timer for the uplink HARQ process;

If the terminal device does not monitor the LP-WUS during the operation of the uplink retransmission timer, it is in the LP-WUS monitoring state and the energy-saving state.
The method according to claim 3, characterized in that the HARQ process is a downlink HARQ process, and the method further includes:

Start a downlink retransmission timer for the downlink HARQ process;

If the terminal device does not monitor the LP-WUS during the operation of the downlink retransmission timer, it is in the LP-WUS monitoring state and the energy-saving state.
The method of claim 2, further comprising:

The retransmission scheduling information of the HARQ process sent by the network device is received through the PDCCH.
The method of claim 6, further comprising:

The HARQ process is an uplink HARQ process, and the retransmission scheduling information for scheduling the uplink HARQ process sent by the network device is received through the PDCCH.
The method of claim 6, further comprising:

The HARQ process is a downlink HARQ process, and the retransmission scheduling information for scheduling the downlink HARQ process sent by the network device is received through the PDCCH.
An energy saving method for terminal equipment, characterized in that it is executed by network equipment, and the method includes:

When the HARQ process is scheduled for data retransmission, a low-power wake-up signal LP-WUS is sent to the terminal device, where the LP-WUS is used to instruct the terminal device to enter a state of monitoring the PDCCH from an energy-saving state.
The method of claim 9, further comprising:

The retransmission scheduling information of the HARQ process is sent to the terminal device through the PDCCH.
The method of claim 10, further comprising:

The HARQ process is an uplink HARQ process, and the retransmission scheduling information for retransmitting the uplink HARQ process is sent to the terminal device through the PDCCH.
The method of claim 10, further comprising:

The HARQ process is a downlink HARQ process, and the retransmission scheduling information for retransmitting the downlink HARQ process is sent to the terminal device through the PDCCH.
A communication device, characterized by including:

The processing module is configured to be in C-DRX mode and start a retransmission timer for the HARQ process, and enter the low-power wake-up signal LP-WUS listening state and energy-saving state. The LP-WUS is used to instruct the terminal device to start from the The energy-saving state enters the state of monitoring PDCCH.
A communication device, characterized by including:

The transceiver module is configured to send LP-WUS to the terminal device when the HARQ process needs to be scheduled for data retransmission, where the LP-WUS is used to instruct the terminal device to enter a PDCCH monitoring state from an energy-saving state.
A communication device, characterized in that the device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device executes the claims The method described in any one of 1-8.
A communication device, characterized in that the device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device executes the claims The method described in any one of 9-12.
A communication device, characterized by including: a processor and an interface circuit;

The interface circuit is used to receive code instructions and transmit them to the processor;

The processor is configured to run the code instructions to perform the method according to any one of claims 1 to 8.
A communication device, characterized by including: a processor and an interface circuit;

The interface circuit is used to receive code instructions and transmit them to the processor;

The processor is configured to run the code instructions to perform the method according to any one of claims 9-12.
A computer-readable storage medium for storing instructions, which when executed, enables the method according to any one of claims 1 to 8 to be implemented.
A computer-readable storage medium for storing instructions, which when executed, enables the method according to any one of claims 9-12 to be implemented.