Control methods, devices and terminals for inactive timers

Abstract

This application discloses a control method, apparatus, and terminal for an inactive timer, belonging to the field of communication technology. The method includes: a first terminal sending information to a target terminal; and, if the first terminal receives a response from the target terminal to the information that meets preset conditions, the first terminal performs an operation on the inactive timer used for secondary link DRX, the operation including starting, restarting, or stopping.

Description

Technical Field

[0001] This application belongs to the field of communication technology, and specifically relates to a control method, device and terminal for an inactive timer. Background Technology

[0002] In SideLink (SL) communication, for Discontinuous Reception (DRX), User Equipment (UE) needs to determine whether it can transmit or receive based on the operation of relevant timers. Specifically, after receiving a SideLink Control Information (SCI) indicating a new transmission, the receiving UE will start or restart an inactive timer to wait for the next transmission from the sending UE.

[0003] If the receiving UE fails to start or restart the inactive timer for some reason, such as not receiving an SCI or other reasons, the inactive timer is in the inactive time. However, the sending UE believes that the receiving UE has started or restarted the inactive timer and is in the active time. If the sending UE continues to transmit, the receiving UE will not be able to receive normally, affecting transmission performance and resulting in low transmission performance. Summary of the Invention

[0004] This application provides a control method, device, and terminal for an inactive timer, which can solve the problem of low transmission performance in existing transmission methods.

[0005] Firstly, a method for controlling an inactive timer is provided, including:

[0006] The first terminal sends information to the target terminal;

[0007] If the response of the target terminal to the information obtained by the first terminal meets the preset conditions, the first terminal performs an operation on the inactive timer used for discontinuous reception of DRX on the secondary link. The operation includes starting, restarting or stopping.

[0008] Secondly, a control device for an inactive timer is provided, comprising:

[0009] The sending module is used for the first terminal to send information to the target terminal;

[0010] The execution module is configured to, when the response of the target terminal to the information obtained by the first terminal meets the preset conditions, perform an operation on the inactive timer for discontinuous reception of DRX on the secondary link by the first terminal, the operation including starting, restarting or stopping.

[0011] Thirdly, a terminal is provided, including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the control method for an inactive timer as described in the first aspect.

[0012] Fourthly, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the control method for an inactive timer as described in the first aspect.

[0013] Fifthly, a chip is provided, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run network-side device programs or instructions to implement the steps of the control method for the inactive timer as described in the first aspect.

[0014] In this embodiment, a first terminal sends information to a target terminal. If the target terminal's response to the information, as obtained by the first terminal, meets preset conditions, the first terminal performs an operation on an inactive timer used for secondary link DRX. This operation includes starting, restarting, or stopping the inactive timer. By starting, restarting, or stopping the inactive timer based on the target terminal's response to the information, the first terminal can improve the transmission performance between the first terminal and the target terminal. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a network system provided in an embodiment of this application;

[0016] Figure 2 This is a flowchart of the control method for an inactive timer provided in an embodiment of this application;

[0017] Figure 3 This is a structural diagram of the control device for the non-activated timer provided in the embodiments of this application;

[0018] Figure 4 This is a structural diagram of the communication device provided in the embodiments of this application;

[0019] Figure 5 This is a structural diagram of the terminal provided in the embodiments of this application. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0021] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship. In this application, "transmission" refers to the transmission of a signal, not signal sending in the narrow sense.

[0022] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. However, the following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description, although these technologies can also be applied to applications other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0023] Figure 1This diagram illustrates a structural diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or user equipment (UE). The terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), etc. Wearable devices include wristbands, headphones, glasses, etc. It should be noted that this application does not limit the specific type of terminal 11. Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this embodiment of the application, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0024] The control method for the inactive timer provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0025] Please see Figure 2 , Figure 2 This is a flowchart of a control method for an inactive timer provided in an embodiment of this application. The control method for an inactive timer includes:

[0026] Step 201: The first terminal sends information to the target terminal. The information may include at least one of signaling and data.

[0027] Step 202: When the response of the target terminal to the information obtained by the first terminal meets the preset conditions, the first terminal performs an operation on the inactive timer used for discontinuous reception of DRX on the secondary link. The operation includes starting, restarting or stopping.

[0028] The first terminal obtains the target terminal's response to the information, and if the response meets the preset conditions, the first terminal starts, restarts, or stops the inactive timer.

[0029] The target terminal may include a second terminal, to which the first terminal sends the information via unicast. The target terminal may also include terminals in the same group as the first terminal, to which the first terminal sends the information via unicast or multicast. The group may be a communication group.

[0030] In this embodiment, the first terminal sends information to the target terminal. If the response from the target terminal to the information, as obtained by the first terminal, meets preset conditions, the first terminal performs an operation on the inactive timer used for the secondary link DRX. This operation includes starting, restarting, or stopping the inactive timer. By starting, restarting, or stopping the inactive timer based on the target terminal's response to the information, the first terminal avoids sending information during the target terminal's inactive period, which could lead to packet loss and improve the transmission performance between the first terminal and the target terminal.

[0031] In one embodiment of this application, when the response of the target terminal to the information obtained by the first terminal meets a preset condition, the first terminal performs an operation on the inactive timer used for discontinuous reception of DRX on the secondary link, including:

[0032] If the response of the target terminal to the information obtained by the first terminal meets the first preset condition, the first terminal starts or restarts the inactive timer.

[0033] or,

[0034] If the response of the target terminal to the information obtained by the first terminal meets the second preset condition, the first terminal stops the inactive timer.

[0035] In the above, the first terminal determines whether to start, restart, or stop the inactive timer based on the target terminal's response to the information. Specifically, if the response meets a first preset condition, the first terminal starts or restarts the inactive timer; if the response meets a second preset condition, the first terminal stops the inactive timer.

[0036] In one embodiment of this application, the first terminal may start or restart the inactive timer when the first preset condition is met, and stop the inactive timer by other means of stopping the inactive timer, such as by using an existing method of stopping the inactive timer.

[0037] In one embodiment of this application, the first terminal may start or restart the inactive timer using other methods, such as using existing methods to start or restart the inactive timer, and stop the inactive timer when the response meets the second preset condition.

[0038] In one embodiment of this application, the first terminal may start or restart the inactive timer if the response meets a first preset condition. In subsequent information transmissions, the first terminal may determine whether to stop the inactive timer based on whether the target terminal's response to the subsequent information meets a second preset condition. For example, if the first terminal sends new information to the target terminal, and the target terminal's response to the new information meets the second preset condition, the first terminal stops the inactive timer.

[0039] The target terminal includes a second terminal, and the first terminal sends the information to the second terminal via unicast; or, the target terminal includes terminals in the same group as the first terminal, and the first terminal sends the information to terminals in the group via unicast or multicast. That is, for terminals in the same group, the first terminal can send information to the terminal via unicast or multicast.

[0040] Accordingly, the first preset condition includes at least one of the following:

[0041] The first terminal receives a Hybrid Automatic Repeat Request (HARQ) feedback message sent by the second terminal;

[0042] The first terminal receives HARQ feedback information sent by at least one third terminal, and the number of the at least one third terminal is greater than a first threshold. The at least one third terminal is a terminal in the group, that is, the at least one third terminal is in the same group as the first terminal.

[0043] The first terminal receives HARQ feedback information sent by at least one third terminal, and the ratio of the number of the at least one third terminal to the number of terminals in the group is greater than a second threshold. The ratio can be calculated in two ways. For example, if a TX UE (i.e., the first terminal) sends information to N UEs (i.e., one third terminal), the second threshold is N', and the number of UEs receiving HARQ feedback from the TX UE is M, then if M / N >= N', the ratio is determined to be greater than the second threshold; or, if M / (N+1) >= N', the ratio is determined to be greater than the second threshold.

[0044] The first terminal receives HARQ feedback information sent by the at least one third terminal, and the identifier of the terminal among the at least one third terminal is the target identifier.

[0045] In the above, both the first threshold and the second threshold can be determined by one of the following methods:

[0046] Determined based on base station configuration;

[0047] Determined based on the terminal configuration communicating with the first terminal;

[0048] The configuration depends on other terminals or equipment, such as the configuration of roadside units (RSUs).

[0049] Determined based on the upper layer of the first terminal;

[0050] Determined based on pre-configuration;

[0051] As determined by the agreement.

[0052] In the above, the terminal's identifier is the target identifier, which may include at least one of the following:

[0053] Source Layer 2 ID;

[0054] Destination Layer 2 ID;

[0055] International Mobile Subscriber Identity (IMSI);

[0056] 5G-S-TMSI, where TMSI is short for Temporary Mobile Subscriber Identity;

[0057] Group member ID within the group to which the terminal belongs; for example, the group member ID within the communication group to which the terminal belongs.

[0058] An ID assigned by the upper layer of the terminal to identify the terminal;

[0059] The first terminal is assigned an ID that can identify the terminal;

[0060] The base station assigns an ID that can identify the terminal.

[0061] Additionally, when the first terminal sends control signaling to the second terminal, or when the first terminal sends control signaling to terminals in the group, the first terminal starts or restarts the inactive timer. The control signaling may be a first SCI and / or a second SCI.

[0062] The timing for the first terminal to start or restart the inactive timer includes at least one of the following:

[0063] The next symbol or time slot after receiving the SL HARQ feedback from the target terminal for the received information on the Physical Sidelink Feedback Channel (PSFCH);

[0064] In the next symbol or slot after sending the control signaling.

[0065] In one embodiment of this application, the target terminal includes a second terminal, and the first terminal sends the information to the second terminal via unicast; or, the target terminal includes terminals in the same group as the first terminal, and the first terminal sends the information to the terminals in the group via unicast or multicast. That is, for the terminals in the group, the first terminal can send information to the terminal via unicast or multicast.

[0066] Accordingly, the second preset condition includes at least one of the following:

[0067] The number of times the first terminal fails to receive HARQ feedback information from the second terminal consecutively is greater than or equal to a first preset number. For example, if the first terminal fails to receive feedback at the first expected PSFCH resource location, it counts as 1 time; if it fails to receive feedback at the next expected PSFCH resource location, it counts as 1 time again.

[0068] The first terminal did not receive HARQ feedback information from the second terminal within a first preset time period;

[0069] The number of fourth terminals in the group is greater than or equal to the third threshold, and the fourth terminal is the terminal in which the number of times the first terminal has not received HARQ feedback information for a consecutive period is greater than or equal to the second preset number.

[0070] The ratio of the number of fifth terminals in the group to the total number of terminals in the group is greater than or equal to a fourth threshold. The fifth terminal is defined as the terminal for which the first terminal has not received HARQ feedback information for a number of consecutive times greater than or equal to a third preset number. For example, if the fourth threshold is M2, and the first terminal sends data to K terminals in the group, then for that transmission, if the number of terminals sending HARQ feedback is L, and L / K >= M2, then the ratio is considered greater than or equal to the fourth threshold. Alternatively, if L / (K+1) >= M2, then the ratio is considered greater than or equal to the fourth threshold.

[0071] The number of sixth terminals in the group is greater than or equal to the fifth threshold. The sixth terminal is a terminal in which the number of times the first terminal has not received HARQ feedback information within the second preset time period is greater than or equal to the fourth preset number. For example, if the fifth threshold is M3, within T1 ms, one terminal in the group (i.e., the sixth terminal) has not received HARQ feedback for W1 times, where W1>=N4, and N4 is the fourth preset number. Another terminal in the group has not received HARQ feedback for W2 times, where W2>=N4. Finally, it is found that within T1 ms, there are a total of Y1 terminals in the group that have not received feedback information for N4 times. If Y1>=M3, then the number of sixth terminals Y1 is considered to be greater than or equal to the fifth threshold M3.

[0072] The ratio of the number of seventh terminals in the group to the total number of terminals in the group is greater than or equal to a sixth threshold. The seventh terminal is defined as the terminal for which the first terminal has not received HARQ feedback information more than or equal to a fifth preset number of times within a third preset time period. For example, if the sixth threshold is M4, and the first terminal sends data to K terminals in the group, within T2 ms, one terminal in the group (i.e., the seventh terminal) has not received HARQ feedback information W3 times, where W3>=N5, and N5 is the fifth preset number. Another terminal in the group has not received HARQ feedback information W4 times, where W4>=N5. Finally, it is statistically determined that within T2 ms, there are Y2 terminals with a number of times feedback information has not been received greater than or equal to N5. If Y2 / K>=M4, then the ratio is considered greater than or equal to the sixth threshold, meaning the ratio of the number of seventh terminals in the group to the total number of terminals in the group is greater than or equal to the sixth threshold; or, if Y2 / (K+1)>=M4, then the ratio is considered greater than or equal to the sixth threshold.

[0073] The number of eighth terminals in the group is greater than or equal to the seventh threshold. The eighth terminal is the terminal that, when the first terminal performs the first number of information transmissions, has not received HARQ feedback information more than or equal to the sixth preset number of times. The statistical time interval for this condition is not a preset time period, but rather the time period during which the first terminal performs the first number of information transmissions.

[0074] The ratio of the number of ninth terminals in the group to the total number of terminals in the group is greater than the eighth threshold. The ninth terminal is the terminal that, when the first terminal performs the second transmission of information, has not received HARQ feedback information for a number of times that is greater than or equal to the seventh preset number of times.

[0075] The number of times the first terminal has not received HARQ feedback information from a specific terminal is greater than or equal to an eighth preset number;

[0076] The number of times the first terminal fails to receive HARQ feedback information from the specific terminal within the sixth preset time period is greater than or equal to the ninth preset number;

[0077] When the first terminal is transmitting information for the third time, the number of times it fails to receive HARQ feedback information from the specific terminal is greater than or equal to the tenth preset number.

[0078] The specific terminal is either a terminal in the group other than the first terminal or a terminal in the group other than the first terminal that is identified as a target identifier. In other words, the specific terminal is any other terminal in the group other than the first terminal. Furthermore, the other terminal can be any receiving terminal in the group other than the first terminal (i.e., the terminal that receives information sent by the first terminal). The other terminal can also be one or more receiving terminals with a target identifier.

[0079] Additionally, if the runtime of the inactive timer on the first terminal (i.e., the actual runtime) is greater than or equal to the target runtime, the first terminal will also stop the inactive timer.

[0080] In one embodiment of this application, when the response of the target terminal to the information obtained by the first terminal meets a second preset condition, the first terminal stops the inactive timer, including:

[0081] If the target runtime of the inactive timer meets a third preset condition, and the response of the target terminal to the information obtained by the first terminal meets a second preset condition, the first terminal stops the inactive timer.

[0082] In this embodiment, the condition for the first terminal to stop the inactive timer is determined based on the target runtime and the target terminal's response to the information. The target runtime needs to meet a third preset condition, and the target terminal's response to the information needs to meet a second preset condition.

[0083] The third preset condition includes: the target runtime of the inactive timer is less than or equal to the first runtime threshold.

[0084] For example, if the target runtime of the inactive timer is less than or equal to the first duration threshold, the first terminal may start or restart the inactive timer in the next symbol or slot of the sent control signaling (first SCI and / or second SCI), and stop the inactive timer if the target terminal's response to the information meets the second preset condition.

[0085] In one embodiment of this application, when the response of the target terminal to the information obtained by the first terminal meets a first preset condition, the first terminal starts or restarts the inactive timer, including:

[0086] If the target runtime of the inactive timer meets the fourth preset condition, and the response of the target terminal to the information obtained by the first terminal meets the first preset condition, the first terminal starts or restarts the inactive timer.

[0087] In this embodiment, the conditions for the first terminal to start or restart the inactive timer are determined based on the target runtime and the target terminal's response to the information. The target runtime needs to meet a fourth preset condition, and the target terminal's response to the information needs to meet a first preset condition.

[0088] The fourth preset condition includes: the target runtime of the inactive timer is greater than or equal to the second duration threshold.

[0089] For example, if the target runtime of the inactive timer is greater than or equal to a second duration threshold, and the target terminal's response to the information meets a first preset condition, the inactive timer will start or restart in the next symbol or slot following the SL HARQ feedback received by the first terminal on the PSFCH from one or more terminals regarding the information sent by the first terminal. Furthermore, if the runtime of the inactive timer (which can be understood as the actual runtime) is equal to or greater than the target runtime, the first terminal will stop the inactive timer.

[0090] In the above, when the first terminal starts or restarts the inactive timer, the target runtime of the inactive timer is determined by one of the following methods:

[0091] The DRX configuration is determined based on the Quality of Service (QoS) of the information sent by the first terminal.

[0092] The duration is determined based on the difference between the second duration and the first duration, wherein the second duration is the duration determined based on the DRX configuration corresponding to the QoS of the information sent by the first terminal, and the first duration is the duration corresponding to the number of symbols or time slots between the first terminal sending control signaling and the first terminal receiving HARQ feedback information.

[0093] Determined based on network-side device configuration;

[0094] The terminal configuration that communicates with the first terminal is determined, for example, the second terminal, or a terminal in the same group as the first terminal.

[0095] As determined by the agreement.

[0096] For example, if the first terminal obtains a first duration of 1 ms from the DRX configuration, and if the first terminal sends an SCI in slot n1 and receives a HARQ feedback in slot n2, then the target runtime of the first terminal's inactive timer is: 1 ms minus the duration of (n2-n1) slots. Alternatively, if the first terminal sends an SCI in symbol X1 of slot n1 and receives a HARQ feedback in symbol X2 of slot n2, then the target runtime of the first terminal's inactive timer is: 1 ms minus the duration between symbol X1 and symbol X2.

[0097] In the above, the DRX configuration corresponding to the QoS of the information sent by the first terminal can be determined according to at least one of the following:

[0098] Base station configuration;

[0099] Terminal configuration for communicating with the first terminal;

[0100] Other terminal or equipment configurations, such as roadside unit (RSU) configurations;

[0101] The upper layer of the first terminal is determined;

[0102] Pre-configured;

[0103] As stipulated in the agreement.

[0104] The following provides an example of the control method for the inactive timer provided in the embodiments of this application.

[0105] The first terminal and the second terminal are not in the same group, and the first terminal sends information to the second terminal via unicast. The process by which the first terminal starts or restarts the inactive timer based on the HARQ feedback is as follows:

[0106] Step 11: The first terminal obtains DRX-related configurations from the network-side device, or determines the DRX configuration based on pre-configuration. The DRX configuration includes the configuration of inactive timers, such as the runtime of inactive timers.

[0107] The first terminal can determine its DRX configuration directly based on the network-side (i.e., network-side device) or pre-configured settings, or it may determine its DRX configuration based on its own implementation after referring to the network-side configuration and pre-configuration. If the network-side configuration or pre-configuration is a mapping between QoS parameters and DRX configuration, the first terminal obtains the corresponding DRX configuration through the QoS of its own service.

[0108] Step 12: After a service arrives at the first terminal, control signaling and data are sent; the control signaling may be firstSCI and / or secondSCI.

[0109] Step 13: After receiving the control signaling from the first terminal, the receiving terminal (in this example, the receiving terminal is the second terminal) determines that the control signaling is used to schedule newly transmitted data. Then, in the next symbol or slot after receiving the control signaling, the receiving terminal starts or restarts the inactive timer. At this time, the receiving terminal's inactive timer is in active time and needs to listen to the Physical Sidelink Control Channel (PSCCH) and / or the Physical Sidelink Share Channel (PSSCH). Simultaneously, the receiving terminal needs to further receive and decode data according to the control signaling. Based on the success or failure of decoding, it determines whether to send HARQ feedback (Acknowledgement (ACK) or Negative-acknowledgement (NACK)) on the PSFCH.

[0110] Step 14: After sending control signaling, the first terminal receives the HARQ feedback from the receiving terminal on the corresponding PSFCH resource.

[0111] If a HARQ response (either ACK or NACK) is received, the first terminal starts or restarts the inactive timer. During the inactive timer's operation, it can continue to send control signaling and / or data to the receiving terminal. It should be noted that the protocol may not explicitly stipulate that the first terminal starts the inactive timer. Regardless of whether the protocol explicitly stipulates that the first terminal starts the inactive timer, the first terminal will consider the receiving terminal to be in an active state for a period of time, and therefore the first terminal can continue to send control signaling or data to the receiving terminal. The specific start or restart time and timer duration can be determined using the method described in this application.

[0112] If the first terminal does not receive HARQ feedback, it assumes that the receiving terminal may not have received control signaling from the first terminal, and therefore the first terminal will not start or restart the inactive timer. In this case, if the first terminal does not start or restart any other timers that can be used to determine if the receiving terminal is active, the first terminal will not send control signaling and / or data to the receiving terminal.

[0113] The first terminal and the second terminal are not in the same group, and the first terminal sends information to the second terminal via unicast. The process by which the first terminal stops the inactive timer based on the HARQ feedback is as follows:

[0114] Step 21: The first terminal obtains DRX-related configurations from the network-side device, or determines the DRX configuration based on pre-configuration. The DRX configuration includes the configuration of inactive timers, such as the runtime of the inactive timers.

[0115] The first terminal can determine its DRX configuration directly based on the network-side (i.e., network-side device) or pre-configured settings, or it may determine its DRX configuration based on its own implementation after referring to the network-side configuration and pre-configuration. If the network-side configuration or pre-configuration is a mapping between QoS parameters and DRX configuration, the first terminal obtains the corresponding DRX configuration through the QoS of its own service.

[0116] Step 22: After a service arrives at the first terminal, it sends control signaling and data. The control signaling may be firstSCI and / or secondSCI.

[0117] Step 23: After receiving the control signaling from the first terminal, the receiving terminal (in this example, the receiving terminal is the second terminal) determines that the control signaling is used to schedule newly transmitted data. Then, in the next symbol or slot after receiving the control signaling, the receiving terminal starts or restarts the inactive timer. At this time, the receiving terminal's inactive timer is in active time and needs to listen to PSCCH and / or PSSCH. Simultaneously, the receiving terminal needs to further receive and decode data according to the control signaling. Based on the success or failure of decoding, it determines whether to send HARQ feedback (ACK or NACK) on PSFCH.

[0118] Step 24: After sending control signaling, the first terminal starts or restarts the inactive timer in the next symbol or slot after sending control signaling. The runtime of the inactive timer is the duration determined based on the DRX configuration in step 21.

[0119] Step 25: If the second preset condition is met, the first terminal stops the inactive timer. After stopping the inactive timer, if the first terminal does not start or restart any other timers that can be used to determine whether the receiving terminal is active, the first terminal will not send control signaling and / or data to the receiving terminal.

[0120] The first terminal and the third terminal are in the same group, and the first terminal sends information to the third terminal via multicast. The process by which the first terminal starts or restarts the inactive timer based on the HARQ feedback is as follows:

[0121] Step 31: The first terminal obtains DRX-related configurations from the network-side device, or determines the DRX configuration based on pre-configuration. The DRX configuration includes the configuration of inactive timers, such as the runtime of the inactive timers.

[0122] The first terminal can determine its DRX configuration directly based on the network-side (i.e., network-side device) or pre-configured settings, or it may determine its DRX configuration based on its own implementation after referring to the network-side configuration and pre-configuration. If the network-side configuration or pre-configuration is a mapping between QoS parameters and DRX configuration, the first terminal obtains the corresponding DRX configuration through the QoS of its own service.

[0123] Step 32: After a service arrives at the first terminal, it sends control signaling and data. The control signaling may be firstSCI and / or secondSCI.

[0124] Step 33: After receiving the control signaling from the first terminal, the receiving terminal (in this example, the receiving terminal is the third terminal) determines that the control signaling is used to schedule newly transmitted data. Then, in the next symbol or slot after receiving the control signaling, the receiving terminal starts or restarts the inactive timer. At this time, the receiving terminal's inactive timer is in active time and needs to listen to PSCCH and / or PSSCH. Simultaneously, the receiving terminal needs to further receive and decode data according to the control signaling. Based on the success or failure of decoding, it determines whether to send HARQ feedback (ACK or NACK) on PSFCH.

[0125] Step 34: After sending control signaling, the first terminal receives HARQ feedback from the receiving terminal on the corresponding PSFCH resource. If the first preset condition is met, the first terminal starts or restarts the inactive timer, and can continue to send control signaling and / or data to the receiving terminal during the inactive timer's operation. It should be noted that the protocol may not explicitly stipulate that the first terminal starts the inactive timer. Regardless of whether the protocol explicitly stipulates that the first terminal starts the inactive timer, the first terminal will consider the receiving terminal to be in an active state for a period of time, and therefore the first terminal can continue to send control signaling or data to the receiving terminal. The specific start or restart time and timer duration can be determined using the method described in this application.

[0126] The first terminal and the third terminal are in the same group, and the first terminal sends information to the third terminal via multicast. The process by which the first terminal stops the inactive timer based on the HARQ feedback is as follows:

[0127] Step 41: The first terminal obtains DRX-related configurations from the network-side device, or determines the DRX configuration based on pre-configuration. The DRX configuration includes the configuration of inactive timers, such as the runtime of the inactive timers.

[0128] The first terminal can determine its DRX configuration directly based on the network-side (i.e., network-side device) or pre-configured settings, or it may determine its DRX configuration based on its own implementation after referring to the network-side configuration and pre-configuration. If the network-side configuration or pre-configuration is a mapping between QoS parameters and DRX configuration, the first terminal obtains the corresponding DRX configuration through the QoS of its own service.

[0129] Step 42: After a service arrives at the first terminal, control signaling and data are sent; the control signaling may be firstSCI and / or secondSCI.

[0130] Step 43: After receiving the control signaling from the first terminal, the receiving terminal (in this example, the receiving terminal is the third terminal) determines that the control signaling is used to schedule newly transmitted data. Then, in the next symbol or slot after receiving the control signaling, the receiving terminal starts or restarts the inactive timer. At this time, the receiving terminal's inactive timer is in active time and needs to listen to PSCCH and / or PSSCH. Simultaneously, the receiving terminal needs to further receive and decode data according to the control signaling. Based on the success or failure of decoding, it determines whether to send HARQ feedback (ACK or NACK) on PSFCH.

[0131] Step 44: After sending control signaling, the first terminal starts or restarts the inactive timer in the next symbol or slot after sending control signaling. The runtime of the inactive timer is the duration determined based on the DRX configuration in step 41.

[0132] Step 45: If the second preset condition is met, the first terminal stops the inactive timer. After stopping the inactive timer, if the first terminal does not start or restart any other timers that can be used to determine whether the receiving terminal is active, the first terminal will not send control signaling and / or data to the receiving terminal.

[0133] The inactive timer control method provided in this application embodiment can ensure that the first terminal and one or more receiving terminals have a consistent understanding of the start or restart of the inactive timer, thereby avoiding packet loss caused by the first terminal sending data during the inactive time of the receiving terminal.

[0134] It should be noted that the execution subject of the inactive timer control method provided in this application embodiment can be the inactive timer control device, or the control module in the inactive timer control device used to execute the inactive timer control method.

[0135] The following embodiments use the control device for the inactive timer to execute the control method for the inactive timer as an example to illustrate the control device for the inactive timer provided in this application.

[0136] Please see Figure 3 , Figure 3 This is a structural diagram of a control device for an inactive timer provided in an embodiment of this application. The control device 300 for the inactive timer includes:

[0137] The sending module 301 is used to send information to the target terminal;

[0138] The execution module 302 is configured to perform an operation on an inactive timer for discontinuous reception of DRX on the secondary link when the response of the target terminal to the information meets a preset condition. The operation includes starting, restarting, or stopping.

[0139] Optionally, execution module 302 includes:

[0140] The startup submodule is used to start or restart the inactive timer when the response of the target terminal to the information obtained by the first terminal meets a first preset condition.

[0141] or,

[0142] The stop submodule is used to stop the inactive timer when the response of the target terminal to the information obtained by the first terminal meets a second preset condition.

[0143] Optionally, the target terminal includes a second terminal, and the first terminal sends the information to the second terminal via unicast; or, the target terminal includes terminals in the same group as the first terminal, and the first terminal sends the information to terminals in the group via multicast.

[0144] The first preset condition includes at least one of the following:

[0145] The first terminal receives the Hybrid Automatic Repeat Request (HARQ) feedback information sent by the second terminal;

[0146] The first terminal receives HARQ feedback information sent by at least one third terminal, and the number of the at least one third terminal is greater than a first threshold.

[0147] The first terminal receives HARQ feedback information sent by the at least one third terminal, and the ratio of the number of the at least one third terminal to the number of terminals in the group is greater than a second threshold.

[0148] The first terminal receives HARQ feedback information sent by the at least one third terminal, and the identifier of the terminal in the at least one third terminal is the target identifier;

[0149] The at least one third terminal is a terminal in the group.

[0150] Optionally, the target terminal includes a second terminal, and the first terminal sends the information to the second terminal via unicast; or, the target terminal includes terminals in the same group as the first terminal, and the first terminal sends the information to terminals in the group via multicast.

[0151] The second preset condition includes at least one of the following:

[0152] The number of times the first terminal fails to receive HARQ feedback information from the second terminal is greater than or equal to a first preset number;

[0153] The first terminal did not receive HARQ feedback information from the second terminal within a first preset time period;

[0154] The number of fourth terminals in the group is greater than or equal to the third threshold, and the fourth terminal is the terminal in which the number of times the first terminal has not received HARQ feedback information for a consecutive period is greater than or equal to the second preset number.

[0155] The ratio of the number of fifth terminals in the group to the total number of terminals in the group is greater than or equal to a fourth threshold. The fifth terminal is a terminal that has not received HARQ feedback information from the first terminal for a number of consecutive times greater than or equal to a third preset number.

[0156] The number of sixth terminals in the group is greater than or equal to the fifth threshold, and the sixth terminal is the terminal in which the first terminal has not received HARQ feedback information more than or equal to the fourth preset number of times within the second preset time period.

[0157] The ratio of the number of seventh terminals in the group to the total number of terminals in the group is greater than or equal to the sixth threshold. The seventh terminal is the terminal in which the first terminal has not received HARQ feedback information more than or equal to the fifth preset number of times within the third preset time period.

[0158] The number of eighth terminals in the group is greater than or equal to the seventh threshold. The eighth terminal is the terminal that, when the first terminal performs the first number of information transmissions, has not received HARQ feedback information for a number of times that is greater than or equal to the sixth preset number.

[0159] The ratio of the number of ninth terminals in the group to the total number of terminals in the group is greater than the eighth threshold. The ninth terminal is the terminal that, when the first terminal performs the second transmission of information, has not received HARQ feedback information for a number of times that is greater than or equal to the seventh preset number of times.

[0160] The number of times the first terminal has not received HARQ feedback information from a specific terminal is greater than or equal to an eighth preset number;

[0161] The number of times the first terminal fails to receive HARQ feedback information from the specific terminal within the sixth preset time period is greater than or equal to the ninth preset number;

[0162] When the first terminal is transmitting information for the third time, the number of times it fails to receive HARQ feedback information from the specific terminal is greater than or equal to the tenth preset number.

[0163] The specific terminal is either a terminal in the group other than the first terminal or a terminal in the group other than the first terminal that is identified as the target identifier.

[0164] Optional, stop submodule, used for:

[0165] If the target runtime of the inactive timer meets a third preset condition, and the response of the target terminal to the information obtained by the first terminal meets a second preset condition, the first terminal stops the inactive timer.

[0166] Optionally, the third preset condition includes:

[0167] The target runtime of the inactive timer is less than or equal to the first runtime threshold.

[0168] Optional, the startup submodule is used for:

[0169] If the target runtime of the inactive timer meets the fourth preset condition, and the response of the target terminal to the information obtained by the first terminal meets the first preset condition, the first terminal starts or restarts the inactive timer.

[0170] Optionally, the fourth preset condition includes:

[0171] The target runtime of the inactive timer is greater than or equal to the second duration threshold.

[0172] Optionally, the device further includes:

[0173] The stop module is used to stop the inactive timer when the runtime of the inactive timer is equal to or greater than the target runtime.

[0174] Optionally, the timing for the first terminal to start or restart the inactive timer includes at least one of the following:

[0175] The next symbol or time slot after receiving HARQ feedback from the target terminal on the PSFCH;

[0176] In the next symbol or time slot after sending the control signaling.

[0177] Optionally, the target runtime of the inactive timer is determined by one of the following methods:

[0178] The DRX configuration is determined based on the Quality of Service (QoS) corresponding to the information sent by the first terminal.

[0179] The duration is determined based on the difference between the second duration and the first duration, wherein the second duration is the duration determined based on the DRX configuration corresponding to the QoS of the information sent by the first terminal, and the first duration is the duration corresponding to the number of symbols or time slots between the first terminal sending control signaling and the first terminal receiving HARQ feedback information;

[0180] Determined based on network-side device configuration;

[0181] Determined based on the terminal configuration communicating with the first terminal;

[0182] As determined by the agreement.

[0183] The inactive timer control device 300 provided in this application embodiment can achieve... Figure 2 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0184] The control device 300 for the inactive timer in this embodiment can be a device, or a component, integrated circuit, or chip in a network-side device.

[0185] The control device 300 for the inactive timer in this embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this embodiment does not specifically limit its use.

[0186] Optional, such as Figure 4 As shown, this application embodiment also provides a communication device 70, including a processor 71, a memory 72, and a program or instructions stored in the memory 72 and executable on the processor 71. For example, when the communication device 70 is a terminal, the program or instructions executed by the processor 71 implement the above-mentioned... Figure 2 The various processes of the control method embodiment for the non-activated timer shown can achieve the same technical effect.

[0187] Figure 5 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0188] The terminal 1000 includes, but is not limited to, the following components: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, and processor 1010.

[0189] Those skilled in the art will understand that the terminal 1000 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1010 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 5 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0190] It should be understood that, in this embodiment, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042. The GPU 10041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0191] In this embodiment, the radio frequency unit 1001 receives downlink data from the network-side device and processes it for the processor 1010; additionally, it sends uplink data to the base station. Typically, the radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0192] The memory 1009 can be used to store software programs or instructions and various data. The memory 1009 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1009 may include high-speed random access memory and non-volatile memory, wherein the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0193] Processor 1010 may include one or more processing units; optionally, processor 1010 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1010.

[0194] The radio frequency unit 1001 is used to send information to the target terminal;

[0195] The processor 1010 is configured to perform an operation on an inactive timer for discontinuous reception of DRX on a secondary link when the response of the target terminal to the information meets a preset condition. The operation includes starting, restarting, or stopping.

[0196] Optionally, the processor 1010 is configured to, when the response of the target terminal to the information obtained by the first terminal meets a first preset condition, start or restart the inactive timer.

[0197] or,

[0198] If the response of the target terminal to the information obtained by the first terminal meets the second preset condition, the first terminal stops the inactive timer.

[0199] Optionally, the target terminal includes a second terminal, and the first terminal sends the information to the second terminal via unicast; or, the target terminal includes terminals in the same group as the first terminal, and the first terminal sends the information to terminals in the group via multicast.

[0200] The first preset condition includes at least one of the following:

[0201] The first terminal receives the Hybrid Automatic Repeat Request (HARQ) feedback information sent by the second terminal;

[0202] The first terminal receives HARQ feedback information sent by at least one third terminal, and the number of the at least one third terminal is greater than a first threshold.

[0203] The first terminal receives HARQ feedback information sent by the at least one third terminal, and the ratio of the number of the at least one third terminal to the number of terminals in the group is greater than a second threshold.

[0204] The first terminal receives HARQ feedback information sent by the at least one third terminal, and the identifier of the terminal in the at least one third terminal is the target identifier;

[0205] The at least one third terminal is a terminal in the group.

[0206] Optionally, the target terminal includes a second terminal, and the first terminal sends the information to the second terminal via unicast; or, the target terminal includes terminals in the same group as the first terminal, and the first terminal sends the information to terminals in the group via multicast.

[0207] The second preset condition includes at least one of the following:

[0208] The number of times the first terminal fails to receive HARQ feedback information from the second terminal is greater than or equal to a first preset number;

[0209] The first terminal did not receive HARQ feedback information from the second terminal within a first preset time period;

[0210] The number of fourth terminals in the group is greater than or equal to the third threshold, and the fourth terminal is the terminal in which the number of times the first terminal has not received HARQ feedback information for a consecutive period is greater than or equal to the second preset number.

[0211] The ratio of the number of fifth terminals in the group to the total number of terminals in the group is greater than or equal to a fourth threshold. The fifth terminal is a terminal that has not received HARQ feedback information from the first terminal for a number of consecutive times greater than or equal to a third preset number.

[0212] The number of sixth terminals in the group is greater than or equal to the fifth threshold, and the sixth terminal is the terminal in which the first terminal has not received HARQ feedback information more than or equal to the fourth preset number of times within the second preset time period.

[0213] The ratio of the number of seventh terminals in the group to the total number of terminals in the group is greater than or equal to the sixth threshold. The seventh terminal is the terminal in which the first terminal has not received HARQ feedback information more than or equal to the fifth preset number of times within the third preset time period.

[0214] The number of eighth terminals in the group is greater than or equal to the seventh threshold. The eighth terminal is the terminal that, when the first terminal performs the first number of information transmissions, has not received HARQ feedback information for a number of times that is greater than or equal to the sixth preset number.

[0215] The ratio of the number of ninth terminals in the group to the total number of terminals in the group is greater than the eighth threshold. The ninth terminal is the terminal that, when the first terminal performs the second transmission of information, has not received HARQ feedback information for a number of times that is greater than or equal to the seventh preset number of times.

[0216] The number of times the first terminal has not received HARQ feedback information from a specific terminal is greater than or equal to an eighth preset number;

[0217] The number of times the first terminal fails to receive HARQ feedback information from the specific terminal within the sixth preset time period is greater than or equal to the ninth preset number;

[0218] When the first terminal is transmitting information for the third time, the number of times it fails to receive HARQ feedback information from the specific terminal is greater than or equal to the tenth preset number.

[0219] The specific terminal is either a terminal in the group other than the first terminal or a terminal in the group other than the first terminal that is identified as the target identifier.

[0220] Optionally, the processor 1010 is further configured to stop the inactive timer when the target runtime of the inactive timer meets a third preset condition and the response of the target terminal to the information obtained by the first terminal meets a second preset condition.

[0221] Optionally, the third preset condition includes: the target runtime of the inactive timer is less than or equal to the first duration threshold.

[0222] Optionally, the processor 1010 is further configured to, when the target runtime of the inactive timer meets a fourth preset condition and the response of the target terminal to the information obtained by the first terminal meets the first preset condition, start or restart the inactive timer.

[0223] Optionally, the fourth preset condition includes: the target runtime of the inactive timer is greater than or equal to the second duration threshold.

[0224] Optionally, the processor 1010 is further configured to stop the inactive timer if the runtime of the inactive timer is equal to or greater than the target runtime.

[0225] Optionally, the timing for the first terminal to start or restart the inactive timer includes at least one of the following:

[0226] The next symbol or time slot after receiving HARQ feedback from the target terminal on the PSFCH;

[0227] In the next symbol or time slot after sending the control signaling.

[0228] Optionally, the target runtime of the inactive timer is determined by one of the following methods:

[0229] The DRX configuration is determined based on the Quality of Service (QoS) corresponding to the information sent by the first terminal.

[0230] The duration is determined based on the difference between the second duration and the first duration, wherein the second duration is the duration determined based on the DRX configuration corresponding to the QoS of the information sent by the first terminal, and the first duration is the duration corresponding to the number of symbols or time slots between the first terminal sending control signaling and the first terminal receiving HARQ feedback information;

[0231] Determined based on network-side device configuration;

[0232] Determined based on the terminal configuration communicating with the first terminal;

[0233] As determined by the agreement.

[0234] The terminal 1000 provided in the above embodiments can achieve Figure 2 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0235] This application embodiment also provides a readable storage medium storing a program or instructions that are executed by a processor. Figure 2 The various processes in the method embodiments described herein can achieve the same technical effect, and will not be repeated here to avoid repetition.

[0236] The processor mentioned above is the processor in the terminal or network-side device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0237] This application embodiment also provides a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run network-side device programs or instructions to achieve the above-mentioned... Figure 2 The various processes in the method embodiments can achieve the same technical effect, and will not be described again here to avoid repetition.

[0238] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0239] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0240] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network, etc.) to execute the methods described in the various embodiments of this application.

[0241] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method of controlling an inactivity timer, the method comprising: Comprising: a first terminal sending information to a target terminal; in a case where a response of the target terminal to the information acquired by the first terminal satisfies a preset condition, the first terminal performing an operation on an inactivity timer for sidelink discontinuous reception (DRX), the operation comprising starting, restarting, or stopping; wherein, in a case where the response of the target terminal to the information acquired by the first terminal satisfies a preset condition, the first terminal performing an operation on an inactivity timer for sidelink discontinuous reception (DRX) comprises: in a case where the response of the target terminal to the information acquired by the first terminal satisfies a first preset condition, the first terminal starting or restarting the inactivity timer; or, in a case where the response of the target terminal to the information acquired by the first terminal satisfies a second preset condition, the first terminal stopping the inactivity timer; wherein the target terminal comprises a second terminal, and the first terminal sends the information to the second terminal through unicast, or the target terminal comprises a terminal in a same group as the first terminal, and the first terminal sends the information to the terminals in the group through groupcast; wherein the first preset condition comprises at least one of: the first terminal receiving hybrid automatic repeat request (HARQ) feedback information sent by a second terminal; the first terminal receiving HARQ feedback information sent by at least one third terminal, and the number of the at least one third terminal being greater than a first threshold; the first terminal receiving HARQ feedback information sent by the at least one third terminal, and a ratio of the number of the at least one third terminal to the number of terminals in the group being greater than a second threshold; the first terminal receiving HARQ feedback information sent by the at least one third terminal, and an identity of a terminal in the at least one third terminal being a target identity; wherein the at least one third terminal is a terminal in the group; wherein the second preset condition comprises at least one of: a number of times that the first terminal does not receive HARQ feedback information from the second terminal consecutively being greater than or equal to a first preset number of times; the first terminal not receiving HARQ feedback information from the second terminal within a first preset time period; a number of fourth terminals in the group being greater than or equal to a third threshold, the fourth terminal being a terminal for which a number of times that the first terminal does not receive HARQ feedback information consecutively is greater than or equal to a second preset number of times; a ratio of a number of fifth terminals in the group to the number of terminals in the group being greater than or equal to a fourth threshold, the fifth terminal being a terminal for which a number of times that the first terminal does not receive HARQ feedback information consecutively is greater than or equal to a third preset number of times; a number of sixth terminals in the group being greater than or equal to a fifth threshold, the sixth terminal being a terminal for which a number of times that the first terminal does not receive HARQ feedback information within a second preset time period is greater than or equal to a fourth preset number of times; A ratio of a number of seventh terminals in the group to a number of terminals in the group is greater than or equal to a sixth threshold value, the seventh terminal being a terminal whose number of times of not receiving HARQ feedback information by the first terminal within a third preset time period is greater than or equal to a fifth preset number of times; A number of eighth terminals in the group is greater than or equal to a seventh threshold value, the eighth terminal being a terminal whose number of times of not receiving HARQ feedback information in a case where the first terminal performs information transmission for a first number of times is greater than or equal to a sixth preset number of times; A ratio of a number of ninth terminals in the group to a number of terminals in the group is greater than an eighth threshold value, the ninth terminal being a terminal whose number of times of not receiving HARQ feedback information in a case where the first terminal performs information transmission for a second number of times is greater than or equal to a seventh preset number of times; A number of times of the first terminal continuously not receiving HARQ feedback information of a specific terminal is greater than or equal to an eighth preset number of times; A number of times of the first terminal continuously not receiving HARQ feedback information of the specific terminal within a sixth preset time period is greater than or equal to a ninth preset number of times; A number of times of the first terminal continuously not receiving HARQ feedback information of the specific terminal in a case where the first terminal performs information transmission for a third number of times is greater than or equal to a tenth preset number of times; The specific terminal is a terminal other than the first terminal in the group or a terminal other than the first terminal in the group and whose identifier is a target identifier.

2. The method of claim 1, wherein, In a case where a response of the target terminal to the information acquired by the first terminal satisfies a second preset condition, the first terminal stops the inactivity timer, including: In a case where a target running duration of the inactivity timer satisfies a third preset condition, and a case where the response of the target terminal to the information acquired by the first terminal satisfies the second preset condition, the first terminal stops the inactivity timer.

3. The method of claim 2, wherein, The third preset condition includes: The target running duration of the inactivity timer is less than or equal to a first duration threshold.

4. The method of claim 1, wherein, In a case where the response of the target terminal to the information acquired by the first terminal satisfies a first preset condition, the first terminal starts or restarts the inactivity timer, including: In a case where a target running duration of the inactivity timer satisfies a fourth preset condition, and a case where the response of the target terminal to the information acquired by the first terminal satisfies the first preset condition, the first terminal starts or restarts the inactivity timer.

5. The method of claim 4, wherein, The fourth preset condition includes: The target running duration of the inactivity timer is greater than or equal to a second duration threshold.

6. The method of claim 1, wherein, The method further includes: Stopping the inactivity timer in a case where a running duration of the inactivity timer is equal to or greater than a target running duration.

7. The method according to claim 1 or 3, characterized in that, The occasion for the first terminal to start or restart the inactivity timer includes at least one of the following: A next symbol or time slot after receiving HARQ feedback of the target terminal on a physical sidelink feedback channel (PSFCH); A next symbol or time slot of sending control signaling.

8. The method according to any one of claims 3-6, characterized in that, The target running duration of the inactivity timer is determined in one of the following ways: Determine according to the DRX configuration corresponding to the quality of service (QoS) of the information sent by the first terminal; Determine according to the difference between the second time length and the first time length, wherein the second time length is a time length determined according to the DRX configuration corresponding to the QoS of the information sent by the first terminal, and the first time length is a time length corresponding to the number of symbols or the number of slots between the first terminal sending control signaling and the first terminal receiving HARQ feedback information; Determine according to the configuration of the network side device; Determine according to the configuration of the terminal in communication with the first terminal; Determine according to the protocol agreement.

9. A control device of an inactivity timer, characterized by, Comprise: The sending module is used for the first terminal to send information to the target terminal; The execution module is used for the first terminal to perform an operation on the inactivity timer for the sidelink discontinuous reception (DRX) in the case that the response of the target terminal to the information acquired by the first terminal satisfies a preset condition, and the operation includes starting, restarting, or stopping; Wherein, the execution module comprises: The starting submodule is used for the first terminal to start or restart the inactivity timer in the case that the response of the target terminal to the information acquired by the first terminal satisfies the first preset condition; Or, The stopping submodule is used for the first terminal to stop the inactivity timer in the case that the response of the target terminal to the information acquired by the first terminal satisfies the second preset condition; Wherein, the target terminal comprises a second terminal, and the first terminal sends the information to the second terminal through a unicast mode, or the target terminal comprises a terminal in the same group as the first terminal, and the first terminal sends the information to the terminals in the group through a groupcast mode; Wherein, the first preset condition comprises at least one of the following: The first terminal receives the HARQ feedback information sent by the second terminal; The first terminal receives the HARQ feedback information sent by at least one third terminal, and the number of the at least one third terminal is greater than a first threshold value; The first terminal receives the HARQ feedback information sent by the at least one third terminal, and the ratio of the number of the at least one third terminal to the number of terminals in the group is greater than a second threshold value; The first terminal receives the HARQ feedback information sent by the at least one third terminal, and the identity of the terminal in the at least one third terminal is a target identity; Wherein, the at least one third terminal is a terminal in the group; Wherein, the second preset condition comprises at least one of the following: The number of times that the first terminal continuously does not receive the HARQ feedback information of the second terminal is greater than or equal to a first preset number of times; The first terminal does not receive the HARQ feedback information of the second terminal within a first preset time period; The number of fourth terminals in the group is greater than or equal to a third threshold value, and the fourth terminal is a terminal whose number of times of continuously not receiving HARQ feedback information is greater than or equal to a second preset number of times. A ratio of a number of fifth terminals in the group to a number of terminals in the group is greater than or equal to a fourth threshold value, the fifth terminal being a terminal for which a number of times that the first terminal consecutively does not receive HARQ feedback information is greater than or equal to a third preset number of times; A number of sixth terminals in the group is greater than or equal to a fifth threshold value, the sixth terminal being a terminal for which a number of times that the first terminal does not receive HARQ feedback information within a second preset time period is greater than or equal to a fourth preset number of times; A ratio of a number of seventh terminals in the group to a number of terminals in the group is greater than or equal to a sixth threshold value, the seventh terminal being a terminal for which a number of times that the first terminal does not receive HARQ feedback information within a third preset time period is greater than or equal to a fifth preset number of times; A number of eighth terminals in the group is greater than or equal to a seventh threshold value, the eighth terminal being a terminal for which a number of times that the first terminal does not receive HARQ feedback information in a case where the first terminal performs information transmission a first number of times of transmission is greater than or equal to a sixth preset number of times; A ratio of a number of ninth terminals in the group to a number of terminals in the group is greater than an eighth threshold value, the ninth terminal being a terminal for which a number of times that the first terminal does not receive HARQ feedback information in a case where the first terminal performs information transmission a second number of times of transmission is greater than or equal to a seventh preset number of times; A number of times that the first terminal consecutively does not receive HARQ feedback information of a specific terminal is greater than or equal to an eighth preset number of times; A number of times that the first terminal consecutively does not receive HARQ feedback information of the specific terminal within a sixth preset time period is greater than or equal to a ninth preset number of times; A number of times that the first terminal consecutively does not receive HARQ feedback information of the specific terminal in a case where the first terminal performs information transmission a third number of times of transmission is greater than or equal to a tenth preset number of times; The specific terminal being a terminal other than the first terminal in the group or a terminal other than the first terminal in the group and having a target identity.

10. A terminal, characterized by comprising: A processor, a memory, and a program or instructions stored in the memory and executable on the processor, the program or instructions being executed by the processor to implement the steps of the control method of the inactivity timer according to any one of claims 1 to 8.

11. A readable storage medium, characterized by, A readable storage medium storing a program or instructions, the program or instructions being executed by a processor to implement the steps of the control method of the inactivity timer according to any one of claims 1 to 8.

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