Discontinuous reception control method, apparatus and system

Abstract

The embodiment of the application provides a discontinuous reception control method, device and system, which are used for aligning the activation time periods of different terminal devices. The method comprises the following steps: receiving first control information, the first control information is used for scheduling first data, and the first data is groupcast data or data transmitted in a groupcast manner; or, a first communication device receives first data, the first data is groupcast data or data transmitted in a groupcast manner; or, the first communication device receives first control information and first data, the first control information is used for scheduling the first data, and the first data is groupcast data or data transmitted in a groupcast manner; starting or restarting a first timer or a second timer according to a first time; wherein the first timer is used for indicating the time length of the first communication device receiving retransmitted data; and the second timer is used for indicating the time length before the first communication device receiving retransmitted data. The application is suitable for the technical field of communication.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a discontinuous reception control method, device, and system. Background Art

[0002] In wireless communication systems, in order to save power consumption of terminal devices while ensuring that data can be effectively transmitted, a discontinuous reception (DRX) mechanism is introduced to control the behavior of terminal devices monitoring the physical downlink control channel (PDCCH). Terminal devices configured with the DRX mechanism can enter a "sleep state" (also known as an opportunity for DRX). A terminal device in a "sleep state" does not monitor the PDCCH. When it needs to monitor the PDCCH, it wakes up from the sleep state, enters the active time period, and monitors the PDCCH during the active time period, so that the terminal device can achieve the purpose of saving power. Currently, the active time period consists of the on-duration time period after the inactive time period and the subsequent active extension time period. An active time period and an inactive time period constitute a DRX cycle.

[0003] For unicast, in the DRX mechanism, the activation extension time period that may occur within the activation time period is determined by at least one of InactivityTimer and RetransmissionTimerDL, wherein RetransmissionTimerDL is started or restarted only after the HARQ-RTT-TimerDL times out and the decoding of the data received by the terminal device this time fails. Therefore, the start or restart of drx-RetransmissionTimerDL or drx-HARQ-RTT-TimerDL and / or the time of start or restart will affect the activation extension time period that may occur after the on duration time period, thereby affecting the activation time period and the terminal device receiving data within the activation time period.

[0004] Currently, there is no standard defining how DRX mechanisms operate for multicast and broadcast services (MBS) in new radio (NR) systems, or for scenarios supporting multicast or broadcast modes, such as vehicle-to-everything (V2X). Therefore, if the DRX mechanism used in unicast is applied to MBS or V2X, aligning the activation time periods of different terminal devices for multicast and / or broadcast is a pressing issue. Summary of the Invention

[0005] The embodiments of the present application provide a discontinuous reception control method, apparatus, and system for solving the problem of how to align activation time periods of different terminal devices.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0007] In a first aspect, a discontinuous reception control method is provided, the method comprising: a first communication device receives first control information, the first control information is used to schedule first data, the first data is multicast data or data transmitted in a multicast manner; or the first communication device receives first data, the first data is multicast data or data transmitted in a multicast manner; or the first communication device receives first control information and first data, the first control information is used to schedule first data, the first data is multicast data or data transmitted in a multicast manner; the first communication device starts or restarts a first timer or a second timer according to a first time; wherein the first timer is used to indicate the duration for the first communication device to receive retransmitted data; and the second timer is used to indicate the duration before the first communication device receives retransmitted data. Based on the discontinuous reception control method provided in an embodiment of the present application, the first communication device receiving data can start or restart the first timer or the second timer according to the first time. Compared with the existing DRX mechanism, the start or restart time of the first timer or the second timer can be aligned, thereby aligning the activation time of different communication devices.

[0008] In combination with the above-mentioned first aspect, in one possible design, the first communication device starts or restarts the first timer or the second timer according to the first time, including: the first communication device starts or restarts the first timer or the second timer at the first time; or, the first communication device starts or restarts the first timer or the second timer at the mth time domain resource after or before the first time, or before the mth time domain resource, or after the mth time domain resource, where m is a positive integer greater than or equal to 1.

[0009] In the second aspect, a discontinuous reception control method is provided, the method comprising: a first communication device receives first control information, the first control information is used to schedule first data, the first data is multicast data or data transmitted in a multicast manner; or, the first communication device receives first data, the first data is multicast data or data transmitted in a multicast manner; or, the first communication device receives first control information and first data, the first control information is used to schedule first data, the first data is multicast data or data transmitted in a multicast manner; the first communication device controls the duration of a first timer according to a first time; wherein the first timer is used to indicate the duration of the first communication device receiving retransmitted data. Based on the discontinuous reception control method provided in an embodiment of the present application, the first communication device can control the duration of the first timer according to the first time. It can be understood that within the group to which the first communication device belongs, all communication devices also control the duration of the first timer according to the first time, thereby aligning the end time of the first timer by controlling the duration of the first timer, thereby aligning the activation end time of different communication devices.

[0010] In combination with the above-mentioned second aspect, in a possible design, the first communication device controls the duration of the first timer according to the first time, including: if the start or restart time of the first timer or the second timer is earlier than the first time, the first communication device extends the duration of the first timer by the first duration; or, if the start or restart time of the first timer or the second timer is later than the first time, the first communication device reduces the duration of the first timer by the first duration; wherein the second timer is used to indicate the duration before the first communication device receives the retransmitted data.

[0011] In combination with the above second aspect, in a possible design, the first duration is the duration between the start or restart time of the first timer or the second timer and the first time.

[0012] In combination with the above-mentioned second aspect, in one possible design, the method also includes: the first communication device sends a first hybrid automatic repeat request HARQ feedback; the first communication device starts or restarts a first timer or a second timer; wherein the first HARQ feedback is associated with the first data.

[0013] In a third aspect, a discontinuous reception control method is provided, the method comprising: a first communications device receiving first control information, the first control information being used to schedule first data; and / or the first communications device receiving the first data; the first communications device determining not to transmit first hybrid automatic repeat request (HARQ) feedback, the first HARQ feedback being associated with the first data; and the first communications device starting or restarting a first timer or a second timer based on a first time; wherein the first timer is used to indicate a duration for the first communications device to receive retransmitted data; and the second timer is used to indicate a duration before the first communications device receives the retransmitted data. Based on this solution, after the first communications device determines not to transmit HARQ feedback, it starts or restarts the first timer or the second timer based on the first time, thereby enabling data to be received during the time the first timer is started or restarted. In contrast, according to existing unicast DRX mechanisms, after the first communications device determines not to transmit HARQ feedback, it is unable to start or restart the first timer or the second timer because it does not send a feedback signal. Therefore, this solution solves the problem in existing unicast DRX mechanisms where the first communications device cannot receive subsequent data that may be sent after determining not to transmit HARQ feedback.

[0014] In combination with the above third aspect, in one possible design, the transmission of the first HARQ feedback conflicts with the first transmission; or, the transmission of the first HARQ feedback conflicts with the first reception.

[0015] In combination with the above-mentioned third aspect, in one possible design, the priority corresponding to the transmission of the first HARQ feedback is lower than the priority corresponding to the first transmission; or, the priority corresponding to the transmission of the first HARQ feedback is lower than the priority corresponding to the first reception.

[0016] In combination with the above third aspect, in one possible design, the first transmission includes any one or more of the following: transmission of second HARQ feedback, first data transmission, and first sidelink transmission.

[0017] In combination with the above third aspect, in one possible design, the first reception includes any one or more of the following: reception of third HARQ feedback.

[0018] In combination with the above-mentioned third aspect, in one possible design, the first communication device starts or restarts the first timer or the second timer according to the first time, including: the first communication device starts or restarts the first timer or the second timer at the first time; or, the first communication device starts or restarts the first timer or the second timer at the mth time domain resource after or before the first time, or before the mth time domain resource, or after the mth time domain resource, where m is a positive integer greater than or equal to 1.

[0019] In combination with the above-mentioned first aspect, second aspect or third aspect, in one possible design, the first control information is transmitted in a unicast manner, or the first control information is transmitted in a multicast manner.

[0020] In combination with the above-mentioned first aspect, second aspect or third aspect, in a possible design, the first time includes the time domain position of the first feedback resource or before the time domain position of the first feedback resource or after the time domain position of the first feedback resource; or, the first time includes the x-th time domain resource after or before the time domain position of the first feedback resource or before the x-th time domain resource or after the x-th time domain resource; or, the first time includes the time domain position of the first transmission resource or before the time domain position of the first transmission resource or after the time domain position of the first transmission resource; or, the first time includes the y-th time domain resource after or before the time domain position of the first transmission resource or before the y-th time domain resource or after the y-th time domain resource; wherein, the first feedback resource is associated with the first data, and the first transmission resource includes resources for transmitting first control information or first data.

[0021] In combination with the above-mentioned first aspect, second aspect or third aspect, in a possible design, the method also includes: the first communication device obtains indication information; the first communication device determines the first time based on the indication information; the indication information includes any one or more of the following: information on the first feedback resource set, information on the first identifier, information on the first feedback resource, information on the first transmission resource; wherein the first feedback resource set includes feedback resources corresponding to the first data.

[0022] In combination with the above-mentioned first aspect, second aspect or third aspect, in a possible design, the method also includes: the first feedback resource set includes the first feedback resource.

[0023] In combination with the above-mentioned first aspect, second aspect or third aspect, in a possible design, the indication information also includes: information of x, or information of y.

[0024] In combination with the above-mentioned first aspect, second aspect or third aspect, in one possible design, the first identifier includes the identifier of the communication device corresponding to the first feedback resource, or the first identifier includes the identifier of the first feedback resource; or the first identifier includes the number of communication devices receiving the first data.

[0025] In combination with the above-mentioned first aspect, second aspect or third aspect, in one possible design, the first feedback resource is associated with the first communication device.

[0026] In combination with the above-mentioned first aspect, second aspect or third aspect, in a possible design, the time domain positions of the feedback resources corresponding to different communication devices receiving the first data are different.

[0027] In combination with the first aspect, the second aspect or the third aspect above, the time domain positions of the feedback resources corresponding to different communication devices receiving the first data are the same.

[0028] In combination with the above-mentioned first aspect, second aspect or third aspect, the first time includes after or before the second time, and the duration from the second time is the time of the first time interval or before or after the time; or, the first time includes after or before the second time, and the duration from the second time is the zth time domain resource after or before the time of the first time interval or before the zth time domain resource or after the zth time domain resource.

[0029] In combination with the above-mentioned first aspect, second aspect or third aspect, in a possible design, the method also includes: the first communication device obtains indication information; the first communication device determines the first time based on the indication information; the indication information includes any one or more of the following: information about the second time, information about the first time interval.

[0030] In combination with the above-mentioned first aspect, second aspect or third aspect, in a possible design, the indication information also includes: information of z.

[0031] In combination with the above-mentioned first aspect, second aspect or third aspect, in one possible design, the second time includes the time domain position of the first feedback resource or before the time domain position of the first feedback resource or after the time domain position of the first feedback resource, or the second time includes the x-th time domain resource after or before the time domain position of the first feedback resource or before the x-th time domain resource or after the x-th time domain resource; wherein, the first feedback resource is associated with the first data.

[0032] In combination with the above-mentioned first aspect, second aspect or third aspect, in a possible design, the information at the second time includes any one or more of the following: information of the first feedback resource set, information of the first identifier, information of the first feedback resource, information of x.

[0033] In combination with the above-mentioned first aspect, second aspect or third aspect, in one possible design, the first feedback resource set includes the first feedback resource.

[0034] In combination with the above-mentioned first aspect, second aspect or third aspect, in one possible design, the first identifier includes the identifier of the communication device corresponding to the first feedback resource, or the first identifier includes the identifier of the first feedback resource; or the first identifier includes the number of communication devices receiving the first data.

[0035] In combination with the above-mentioned first aspect, second aspect or third aspect, in one possible design, the first feedback resource is associated with the first communication device.

[0036] In combination with the above-mentioned first aspect, second aspect or third aspect, in a possible design, the time domain positions of the feedback resources corresponding to different communication devices receiving the first data are different.

[0037] In combination with the above-mentioned first aspect, second aspect or third aspect, in a possible design, the time domain positions of the feedback resources corresponding to different communication devices receiving the first data are the same.

[0038] In combination with the above-mentioned first aspect, second aspect or third aspect, in one possible design, the second time includes the time domain position of the first transmission resource or before the time domain position of the first transmission resource or after the time domain position of the first transmission resource, or the first time includes the yth time domain resource after or before the time domain position of the first transmission resource or before the yth time domain resource or after the yth time domain resource; wherein, the first transmission resource includes resources for transmitting first control information or first data.

[0039] In combination with the first aspect, the second aspect, or the third aspect, in one possible design, the first communication device obtains indication information, where the indication information includes information about the first time. The first communication device determines the first time based on the indication information.

[0040] In combination with the above-mentioned first aspect, second aspect or third aspect, in one possible design, the first time includes the w-th time domain resource before or after the time domain position of the first feedback resource, or before the w-th time domain resource or after the w-th time domain resource; wherein, the first feedback resource is associated with the first communication device.

[0041] In combination with the above-mentioned first aspect, second aspect or third aspect, in a possible design, the method also includes: the first communication device obtains indication information; the first communication device determines the first time based on the indication information; the indication information includes information of the first feedback resource, and / or information of W.

[0042] In combination with the above-mentioned first aspect, second aspect or third aspect, in one possible design, the time domain positions of the feedback resources corresponding to different communication devices receiving the first data are the same; or, the feedback resources corresponding to different communication devices receiving the first data are located in the same time domain resources.

[0043] In combination with the above-mentioned first aspect, second aspect or third aspect, in one possible design, when the second timer times out, the first timer is started or restarted.

[0044] In a fourth aspect, a first communication device is provided for implementing the above method. The first communication device includes modules, units, or means corresponding to implementing the above method. The modules, units, or means can be implemented in hardware, software, or by hardware executing corresponding software implementations. The hardware or software includes one or more modules or units corresponding to the above functions.

[0045] In combination with the above-mentioned fourth aspect, in one possible design, the first communication device includes: a transceiver module and a processing module; the transceiver module is used to receive first control information, the first control information is used to schedule first data, the first data is multicast data or data transmitted in a multicast manner; or, receive first data, the first data is multicast data or data transmitted in a multicast manner; or, receive first control information and first data, the first control information is used to schedule first data, the first data is multicast data or data transmitted in a multicast manner; the processing module is used to start or restart a first timer or a second timer according to a first time; wherein the first timer is used to indicate the duration of time for the transceiver module to receive retransmitted data; the second timer is used to indicate the duration before the transceiver module receives retransmitted data.

[0046] In combination with the fourth aspect above, in a possible implementation, the processing module may be a processor, and the transceiver module may be a transceiver.

[0047] In combination with the above-mentioned fourth aspect, in a possible design, the processing module starts or restarts the first timer or the second timer according to the first time, including: the processing module starts or restarts the first timer or the second timer at the first time; or, the processing module starts or restarts the first timer or the second timer at the mth time domain resource after or before the first time, or before the mth time domain resource, or after the mth time domain resource, where m is a positive integer greater than or equal to 1.

[0048] In a fifth aspect, a first communication device is provided for implementing the above method. The first communication device includes modules, units, or means corresponding to implementing the above method. The modules, units, or means can be implemented through hardware, software, or hardware executing corresponding software implementations. The hardware or software includes one or more modules or units corresponding to the above functions.

[0049] With reference to the fifth aspect above, in a possible design, the first communication apparatus includes: a transceiver and a processing module; the transceiver is configured to receive first control information, where the first control information is used for scheduling first data, and the first data is groupcast data or data transmitted in a groupcast manner; or receive the first data, where the first data is groupcast data or data transmitted in a groupcast manner; or receive the first control information and the first data, where the first control information is used for scheduling the first data, and the first data is groupcast data or data transmitted in a groupcast manner; and the processing module is configured to control a time length of a first timer according to the first time, where the first timer is used to indicate a time length for the first communication apparatus to receive retransmitted data.

[0050] With reference to the fifth aspect above, in a possible implementation, the processing module can be a processor, and the transceiver can be a transceiver.

[0051] With reference to the fifth aspect above, in a possible design, the processing module is configured to control the time length of the first timer according to the first time, including: when a starting or restarting time of the first timer or a second timer is earlier than the first time, the first communication apparatus extends the time length of the first timer by a first time length; or when the starting or restarting time of the first timer or the second timer is later than the first time, the first communication apparatus reduces the time length of the first timer by the first time length, where the second timer is used to indicate a time length for the first communication apparatus to wait before receiving retransmitted data.

[0052] With reference to the fifth aspect above, in a possible design, the first time length is a time length between the starting or restarting time of the first timer or the second timer and the first time.

[0053] With reference to the fifth aspect above, in a possible design, the transceiver is further configured to send first hybrid automatic repeat request (HARQ) feedback, and the processing module is further configured to start or restart the first timer or the second timer, where the first HARQ feedback is associated with the first data.

[0054] In a sixth aspect, a first communication apparatus is provided for implementing the method in the above aspects. The first communication apparatus includes modules, units, or means corresponding to the modules, units, or means for implementing the method, which can be implemented by hardware, software, or by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the above functions.

[0055] In combination with the above-mentioned sixth aspect, in one possible design, the first communication device includes: a transceiver module and a processing module; the transceiver module is used to receive first control information, the first control information is used to schedule first data; and / or, receive first data; the processing module is used to determine not to transmit a first hybrid automatic repeat request HARQ feedback, the first HARQ feedback is associated with the first data; the processing module is also used to start or restart a first timer or a second timer according to the first time; wherein the first timer is used to indicate the duration of time the first communication device receives the retransmitted data; the second timer is used to indicate the duration before the first communication device receives the retransmitted data.

[0056] In combination with the sixth aspect above, in a possible implementation, the processing module may be a processor, and the transceiver module may be a transceiver.

[0057] In combination with the sixth aspect above, in a possible implementation manner, the transmission of the first HARQ feedback conflicts with the first transmission; or the transmission of the first HARQ feedback conflicts with the first reception.

[0058] In combination with the above-mentioned sixth aspect, in a possible implementation method, the priority corresponding to the transmission of the first HARQ feedback is lower than the priority corresponding to the first transmission; or, the priority corresponding to the transmission of the first HARQ feedback is lower than the priority corresponding to the first reception.

[0059] In combination with the sixth aspect above, in a possible implementation, the first transmission includes any one or more of the following: transmission of a second HARQ feedback, first data transmission, and a first sidelink transmission.

[0060] In combination with the sixth aspect above, in a possible implementation, the first reception includes any one or more of the following: reception of third HARQ feedback.

[0061] In combination with the above-mentioned sixth aspect, in a possible design, the processing module is used to start or restart the first timer or the second timer according to the first time, including: the processing module is used to start or restart the first timer or the second timer at the first time; or, the processing module is used to start or restart the first timer or the second timer at the mth time domain resource after the first time, or before the mth time domain resource, or after the mth time domain resource, where m is a positive integer greater than or equal to 1.

[0062] In combination with the above-mentioned fourth aspect, fifth aspect or sixth aspect, in one possible design, the first control information is transmitted in a unicast manner, or the first control information is transmitted in a multicast manner.

[0063] In combination with the above-mentioned fourth, fifth or sixth aspect, in a possible design, the first time includes the time domain position of the first feedback resource or before the time domain position of the first feedback resource or after the time domain position of the first feedback resource; or, the first time includes the x-th time domain resource after or before the time domain position of the first feedback resource or before the x-th time domain resource or after the x-th time domain resource; or, the first time includes the time domain position of the first transmission resource or before the time domain position of the first transmission resource or after the time domain position of the first transmission resource; or, the first time includes the y-th time domain resource after or before the time domain position of the first transmission resource or before the y-th time domain resource or after the y-th time domain resource; wherein, the first feedback resource is associated with the first data, and the first transmission resource includes resources for transmitting first control information or first data.

[0064] In combination with the above-mentioned fourth aspect, fifth aspect or sixth aspect, in a possible design, the method also includes: the first communication device obtains indication information; the first communication device determines the first time based on the indication information; the indication information includes any one or more of the following: information on the first feedback resource set, information on the first identifier, information on the first feedback resource, information on the first transmission resource; wherein the first feedback resource set includes feedback resources corresponding to the first data.

[0065] In combination with the above-mentioned fourth aspect, fifth aspect or sixth aspect, in a possible design, the method also includes: the first feedback resource set includes the first feedback resource.

[0066] In combination with the fourth aspect, fifth aspect or sixth aspect above, in one possible design, the indication information also includes: information of x, or information of y.

[0067] In combination with the above-mentioned fourth aspect, fifth aspect or sixth aspect, in one possible design, the first identifier includes the identifier of the communication device corresponding to the first feedback resource, or the first identifier includes the identifier of the first feedback resource; or the first identifier includes the number of communication devices receiving the first data.

[0068] In combination with the fourth, fifth or sixth aspect above, in one possible design, the first feedback resource is associated with the first communication device.

[0069] In combination with the fourth aspect, the fifth aspect or the sixth aspect above, in one possible design, the time domain positions of the feedback resources corresponding to different communication devices receiving the first data are different.

[0070] In combination with the fourth aspect, the fifth aspect or the sixth aspect above, the time domain positions of the feedback resources corresponding to different communication devices receiving the first data are the same.

[0071] In a possible design of the fourth aspect, the fifth aspect or the sixth aspect, the first time includes a time before or after the second time, and a time length from the second time is a time before or after the first time interval or the time of the first time interval; or the first time includes a time before or after the second time, and a time length from the second time is a zth time domain resource before or after the first time interval or a time before or after the zth time domain resource.

[0072] In a possible design of the fourth aspect, the fifth aspect or the sixth aspect, the method further includes: the first communication device obtaining indication information; and the first communication device determining the first time according to the indication information; the indication information includes any one or more of the following: information of the second time, information of the first time interval.

[0073] In a possible design of the fourth aspect, the fifth aspect or the sixth aspect, the indication information further includes information of z.

[0074] In a possible design of the fourth aspect, the fifth aspect or the sixth aspect, the second time includes a time domain location of the first feedback resource or a time before or after the time domain location of the first feedback resource, or the second time includes a xth time domain resource before or after the time domain location of the first feedback resource; the first feedback resource is associated with the first data.

[0075] In a possible design of the fourth aspect, the fifth aspect or the sixth aspect, the information of the second time includes any one or more of the following: information of the first feedback resource set, information of the first identifier, information of the first feedback resource, information of x.

[0076] In a possible design of the fourth aspect, the fifth aspect or the sixth aspect, the first feedback resource set includes the first feedback resource.

[0077] In a possible design of the fourth aspect, the fifth aspect or the sixth aspect, the first identifier includes an identifier of a communication device corresponding to the first feedback resource, or the first identifier includes an identifier of the first feedback resource; or the first identifier includes a number of communication devices receiving the first data.

[0078] In a possible design of the fourth aspect, the fifth aspect or the sixth aspect, the first feedback resource is associated with the first communication device.

[0079] In a possible design of the fourth aspect, the fifth aspect or the sixth aspect, time domain locations of feedback resources corresponding to different communication devices receiving the first data are different.

[0080] In combination with the fourth aspect, fifth aspect or sixth aspect above, in one possible design, the time domain positions of the feedback resources corresponding to different communication devices receiving the first data are the same.

[0081] In combination with the above-mentioned fourth aspect, fifth aspect or sixth aspect, in one possible design, the second time includes the time domain position of the first transmission resource or before the time domain position of the first transmission resource or after the time domain position of the first transmission resource, or the first time includes the yth time domain resource after or before the time domain position of the first transmission resource or before the yth time domain resource or after the yth time domain resource; wherein, the first transmission resource includes resources for transmitting first control information or first data.

[0082] In combination with the fourth aspect, the fifth aspect, or the sixth aspect, in one possible design, the first communication device obtains indication information, where the indication information includes information about the first time. The first communication device determines the first time based on the indication information.

[0083] In combination with the above-mentioned fourth aspect, fifth aspect or sixth aspect, in one possible design, the first time includes the w-th time domain resource before or after the time domain position of the first feedback resource, or before the w-th time domain resource or after the w-th time domain resource; wherein, the first feedback resource is associated with the first communication device.

[0084] In combination with the above-mentioned fourth aspect, fifth aspect or sixth aspect, in a possible design, the method also includes: the first communication device obtains indication information; the first communication device determines the first time based on the indication information; the indication information includes information of the first feedback resource, and / or information of W.

[0085] In combination with the above-mentioned fourth aspect, fifth aspect or sixth aspect, in one possible design, the time domain positions of the feedback resources corresponding to different communication devices receiving the first data are the same; or, the feedback resources corresponding to different communication devices receiving the first data are located in the same time domain resources.

[0086] In combination with the above-mentioned fourth aspect, fifth aspect or sixth aspect, in one possible design, when the second timer times out, the first timer is started or restarted.

[0087] Among them, the technical effects brought about by any design method in the fourth, fifth or sixth aspects can refer to the technical effects brought about by different design methods in the above-mentioned first, second or third aspects, and will not be repeated here.

[0088] In the seventh aspect, a first communication device is provided, comprising: a processor and a memory; the memory is used to store computer-executable instructions, and when the first device is running, the processor executes the computer-executable instructions stored in the memory to enable the first device to perform a discontinuous reception control method as described in any one of the above-mentioned first aspects.

[0089] In an eighth aspect, a first communication device is provided, comprising: a processor; the processor is used to couple with a memory, and after reading instructions in the memory, execute the discontinuous reception control method as described in any one of the above-mentioned first aspects according to the instructions.

[0090] In a ninth aspect, a computer-readable storage medium is provided, wherein instructions are stored in the computer-readable storage medium. When the computer-readable storage medium is run on a computer, the computer can execute the discontinuous reception control method described in any one of the first aspects above.

[0091] In a tenth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the discontinuous reception control method described in any one of the first aspects.

[0092] In an eleventh aspect, a device (e.g., a system-on-a-chip) is provided. The device includes a processor configured to support a first communication device in implementing the functions described in the first, second, or third aspects. In one possible design, the device further includes a memory configured to store program instructions and data necessary for the first communication device. When the device is a system-on-a-chip, it may be composed of a chip or may include a chip and other discrete components.

[0093] Among them, the technical effects brought about by any design method in the seventh to eleventh aspects can refer to the technical effects brought about by different design methods in the first, second or third aspects, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] Figure 1 A schematic diagram of a DRX cycle provided in an embodiment of the present application;

[0095] Figure 2 A schematic diagram of the architecture of a next-generation wireless access network system provided in an embodiment of the present application;

[0096] Figure 3 A schematic diagram of the structure of a communication system provided in an embodiment of the present application;

[0097] Figure 4 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0098] Figure 5Another structural schematic diagram of a communication apparatus provided by an embodiment of the present application is provided.

[0099] Figure 6 A flowchart of a discontinuous reception control method provided by an embodiment of the present application is provided.

[0100] Figure 7a A time domain position schematic diagram of a first feedback resource provided by an embodiment of the present application is provided.

[0101] Figure 7b A time domain position schematic diagram of a first transmission resource provided by an embodiment of the present application is provided.

[0102] Figure 8 Another time domain position schematic diagram of a first feedback resource provided by an embodiment of the present application is provided.

[0103] Figure 9 A frequency division schematic diagram of a feedback resource provided by an embodiment of the present application is provided.

[0104] Figure 10 A time domain position order schematic diagram of a first feedback resource in a feedback resource provided by an embodiment of the present application is provided.

[0105] Figure 11 Another flowchart of a discontinuous reception control method provided by an embodiment of the present application is provided.

[0106] Figure 12 A schematic diagram of a first time and a first time length provided by an embodiment of the present application is provided.

[0107] Figure 13 A flowchart of still another discontinuous reception control method provided by an embodiment of the present application is provided.

[0108] Figure 14 Still another structural schematic diagram of a communication apparatus provided by an embodiment of the present application is provided. DETAILED DESCRIPTION

[0109] Embodiments provided by the present application can be applied to MBS and V2X, but are not limited thereto. In order to facilitate understanding of the technical solutions of the embodiments of the present application, first, a brief introduction of the related technologies of the present application is given as follows.

[0110] 1. MBS.

[0111] Transmission mode of MBS: for transmission of MBS service / data, any one or more of the following transmission modes can be used: dynamic transmission mode and / or configuration transmission mode.

[0112] The dynamic transmission mode includes a point-to-point (Point-to-Point, PTP) transmission mode and / or a PTM transmission mode.

[0113] PTP transmission mode: Through this transmission mode, the transmitter sends a piece of data to a receiver. The PTP transmission mode can be understood as: (network equipment) uses the PDCCH / downlink control information (DCI) scrambled with the radio network temporary identifier (Radio Network Temporary Identity, RNTI) specific to the terminal device (for example, the cell radio network temporary identifier (Cell-RNTI, C-RNTI, the first RNTI) to schedule (for the terminal device) the physical downlink shared channel (PDSCH) scrambled with the RNTI specific to the terminal device (for example, C-RNTI, the first RNTI). The PTP transmission mode can also be called the C+C transmission mode.

[0114] In this application, DCI can be replaced by PDCCH, and PDCCH can be replaced by DCI.

[0115] In the present application, RNTI scrambling PDCCH / DCI / control information can be understood as: RNTI scrambling the cyclic redundancy check (CRC) of PDCCH / DCI / control information, or, the CRC of PDCCH / DCI / control information is scrambled by RNTI (PDCCH / DCI / control information with CRC scrambled by RNTI).

[0116] PTM transmission mode: Through the PTM transmission mode, the transmitter can send one piece of data to multiple receivers.

[0117] The PTM transmission mode may include the first PTM transmission mode and / or the second PTM transmission mode:

[0118] The first PTM transmission mode can be understood as: (network equipment) schedules PDSCH scrambled with a common RNTI (e.g., Group-RNTI (G-RNTI), second RNTI) using a PDCCH / DCI scrambled with a common RNTI (e.g., G-RNTI, second RNTI) (for terminal equipment). Alternatively, it can be understood that the network side scrambles a DCI with a common RNTI, and the DCI is used to schedule data scrambled with a common RNTI. In this case, multiple communication devices receive the same DCI, and the data received by these multiple communication devices is the same.

[0119] The first PTM transmission mode may also be called a G+G transmission mode.

[0120] The second PTM transmission mode can be understood as follows: (the network device) schedules (for the terminal device) a PDSCH scrambled with a common RNTI (e.g., G-RNTI, second RNTI) using a PDCCH / DCI scrambled with a terminal device-specific RNTI (e.g., C-RNTI, first RNTI). Alternatively, it can be understood that each of the multiple communication devices receives a DCI scrambled with a specific RNTI, but these DCIs are used to schedule the same data. That is, although each communication device receives a different DCI, the data received by the multiple communication devices is the same.

[0121] The second PTM transmission mode may also be called a C+G transmission mode.

[0122] For example, PDSCH can also be understood as data.

[0123] The configuration transmission mode can be understood as: (network device) transmitting data / multicast data (to terminal device) on the configuration resource; or, (terminal device) receiving data / multicast data (sent by the network device) on the configuration resource.

[0124] The configuration transmission mode can also be called a semi-static transmission mode.

[0125] Configuration resources may also be referred to as Semi-Persistent Scheduling (SPS) resources.

[0126] MBS HARQ: NR MBS supports Hybrid Automatic Repeat reQuest (HARQ).

[0127] 2. Multicast and unicast.

[0128] Multicast may include any one or more of the following: broadcast in Multimedia Broadcast Multicast Service (MBMS) or MBS; multicast in MBMS or MBS; multicast in MBMS or MBS; groupcast in V2X; multicast in V2X; broadcast in V2X; multicast; broadcast; multicast; groupcast; broadcast.

[0129] The multicast service may include / be replaced by any one or more of the following: broadcast service, multicast service, MBS service, MBS broadcast service, MBS multicast service, V2X multicast service, and V2X broadcast service.

[0130] The data corresponding to the multicast service may be referred to as multicast data.

[0131] Unicast may include any one or more of the following: unicast in V2X; unicast. Optionally, unicast may be understood as unicast transmission.

[0132] In the embodiment of the present application, the multicast mode may also include / replace a multicast mode or a broadcast mode. In the description, the multicast mode is used as an example.

[0133] 3.DRX.

[0134] As mentioned above, DRX controls the behavior of terminal devices monitoring the PDCCH, ensuring efficient data transmission while saving power. When DRX is configured for a terminal device, it can be put into a sleep state at certain times. During this time, the terminal is in a "sleep state" and does not need to continuously monitor the PDCCH. When monitoring is required, the terminal wakes up from the "sleep state" and enters the "active state," meaning it enters the active period. This allows the terminal device to achieve power savings.

[0135] A typical DRX cycle is as follows: Figure 1 As shown:

[0136] On-duration: The duration of time that a terminal device waits to receive a PDCCH after waking up. If the terminal device successfully decodes a PDCCH during the on-duration, the terminal device remains in the awakened state and the wake-up time is extended by controlling timers (e.g., inactivity-timer, retransmission timer, roundtrip time (RTT) timer).

[0137] Opportunity for DRX: This period is the DRX sleep period, meaning that the terminal device goes into sleep mode and does not monitor the PDCCH to save power. Longer DRX sleep periods reduce the terminal device's power consumption, but also increase service transmission latency.

[0138] DRX Cycle: The repetition period of the on-duration. The next DRX cycle starts or restarts at the same time as the on-duration. A DRX cycle consists of the on-duration plus any subsequent extended DRX periods controlled by timers and DRX inactivity periods (opportunities for DRX).

[0139] DRX in unicast mode:

[0140] In the existing DRX, the timers used to control the terminal device to be in the active state may include (the following explanations of each timer are explained with the following examples): OnDuration Timer, InactivityTimer, RetransmissionTimer, that is, the terminal device is in the active state during the operation of the above timers.

[0141] RetransmissionTimer is configured for each downlink HARQ process and can be understood as the maximum time it takes for a terminal device to receive the expected downlink retransmission data in a retransmission scenario;

[0142] HARQ-RTT-Timer is also configured for each downlink HARQ process, which can be understood as the shortest time that the terminal device needs to wait before receiving the expected downlink retransmission data.

[0143] When DRX is configured for a terminal device, in the case of static assignment, the specific processing flow of the terminal device using DRX can be as follows:

[0144] 1) If the terminal device receives downlink data in the configured downlink allocation during the activation period, the terminal device starts or restarts the HARQ-RTT-Timer after sending feedback to the network device;

[0145] 2) If the HARQ-RTT-Timer times out and there is data that has not been successfully decoded in the HARQ process, the terminal device starts or restarts the RetransmissionTimer after the HARQ-RTT-Timer times out to receive the retransmitted data.

[0146] When DRX is configured for a terminal device, in the case of dynamic scheduling, the specific processing flow of the terminal device using DRX can be as follows:

[0147] 1) The terminal device monitors the PDCCH during the activation period. If the PDCCH indicates downlink transmission, the terminal device can start or restart the HARQ-RTT-Timer after sending feedback to the network device;

[0148] 2) If the HARQ-RTT-Timer times out and there is data that has not been successfully decoded in the HARQ process, the terminal device starts or restarts the RetransmissionTimer after the HARQ-RTT-Timer times out to receive the retransmitted data.

[0149] 3) The terminal device monitors the PDCCH during the activation period. If the PDCCH indicates a new transmission (new uplink transmission or new downlink transmission), the terminal device starts or restarts the Inactivity Timer after receiving the PDCCH.

[0150] In the unicast DRX mechanism, the DRX activation period can include the on-duration timer, inactivity timer, and the running time of the Retransmission Timer. For ease of description, the HARQ-RTT-Timer may be referred to as the RTT timer, the Retransmission Timer as the retransmission timer, and the running time of the retransmission timer as the retransmission activation period.

[0151] 4. V2X.

[0152] V2X is a key technology for intelligent transportation systems and is considered one of the areas with the greatest industrial potential and clearest market demand within the Internet of Things (IoT). The Internet of Vehicles (IoV) refers to a communication network that uses onboard sensors and onboard devices to provide vehicle information, enabling vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-network (V2N), and vehicle-to-pedestrian (V2P) communications.

[0153] Generally, in a V2X scenario, the communication link for direct communication between a terminal and other terminals can be called a sidelink (SL) or side link.

[0154] NR V2X supports unicast, multicast and broadcast.

[0155] 5. NACK only and ACK / NACK

[0156] NACK only: The communication device does not send feedback if it successfully receives data, and returns NACK if it fails to receive data.

[0157] ACK / NACK: A communication device sends an ACK if it successfully receives data, and returns a NACK if it fails to receive data.

[0158] 6. Unicast PUCCH

[0159] 6.1: Unicast PUCCH Resource Configuration Mechanism

[0160] The network device configures a PUCCH configuration (PUCCH-Config) for each bandwidth part (BWP).

[0161] For dynamically allocated downlink resources, the following parameters are combined with the RRC field to determine the PUCCH resource:

[0162] The PDSCH-to-HARQ_feedback timing indicator field in the DCI indicates the time slot interval between the PUCCH feedback resource and the PDSCH.

[0163] The PUCCH resource indicator field in the DCI indicates the time and frequency domain location of the PUCCH resource. For example, it indicates which symbol(s) are transmitted in a slot.

[0164] For SPS, the terminal device determines the PUCCH resources using the following parameters:

[0165] The PDSCH-to-HARQ_feedback timing indicator field in the DCI, combined with the n1PUCCH-AN parameter in the RRC signaling, indicates the PUCCH resource number (PUCCH-ResourceId), which refers to the number of the PUCCH resource configured by the network device for the terminal device.

[0166] 6.2: Unicast PUCCH Transmission Mechanism

[0167] When PUCCH and PUSCH collide or overlap, PUCCH may be routed to PUSCH.

[0168] In ultra-reliable and low latency communications (URLLC):

[0169] For PUCCH, if PUCCHs of different priorities collide in the time domain, the PUCCH with lower priority will be dropped.

[0170] 7. HARQ feedback is dropped

[0171] Currently, HARQ feedback is dropped in the following cases:

[0172] Case 1: Conflict between MBS HARQ feedback and unicast HARQ feedback / unicast PUSCH:

[0173] If the PUCCH resources used by the terminal device to send MBS HARQ feedback and the PUCCH resources used to send unicast HARQ feedback, or the PUCCH resources used to send unicast PUSCH resources, conflict in the time domain, the lower priority resources are dropped.

[0174] Case 2: Conflict between URLLC HARQ feedback and enhanced mobile broadband (eMBB) HARQ feedback / PUSCH:

[0175] If the PUCCH resources used by the terminal device to send URLLC HARQ feedback and the PUCCH resources used to send eMBB HARQ feedback, or the PUCCH resources used to send eMBB HARQ feedback, conflict in the time domain, the lower-priority resources are dropped.

[0176] Case 3: Collision between SL transmission and UL transmission (e.g., UL HARQ feedback of SL):

[0177] In the V2X scenario, the transmission resources used by the terminal device to send control information or data in SL transmission conflict with the transmission resources used for UL transmission (for example, PUCCH resources for UL HARQ feedback of SL transmission), and the lower priority resources are dropped.

[0178] Case 4: Conflict between the reception resources of SL HARQ feedback and the transmission resources of SL HARQ feedback:

[0179] In the V2X scenario, a terminal device can send data while receiving data, that is, the same terminal device can send HARQ feedback for the first data received and receive HARQ feedback for the second data from other terminal devices. When the PSFCH resource used by the terminal device to send HARQ feedback conflicts with the physical sidelink feedback channel (PSFCH) resource used to receive HARQ feedback, the lower priority resource is dropped. PSFCH is the resource on the SL used to transmit HARQ feedback.

[0180] As mentioned above, in existing unicast communications, network devices and terminal devices communicate one-to-one, and their activation periods are aligned. The following describes the differences between MBS and unicast that affect the activation period in DRX:

[0181] Difference 1: For ACK / NACK, the feedback resources of different terminal devices may not be aligned in the time domain.

[0182] In one case, if the terminal device uses an MBS-specific PUCCH configuration (PUCCH-Config), the PUCCH resources of different terminal devices may not be aligned within the slot in the time domain.

[0183] In another case, if the terminal device uses a unicast PUCCH-Config, the PUCCH resources of different terminal devices may not be aligned in the time domain slot. In both cases, the PUCCH resources of different terminal devices are located in different time domains, and the feedback is sent at different times. Therefore, the time when different terminal devices start or restart the RTT timer is different, which in turn causes the time when the terminal devices start the retransmission timer to be different.

[0184] Difference 2: For ACK / NACK and NACK-only scenarios, the PUCCH resources of a terminal device in the multicast group may be multiplexed with other PUCCH resources of the terminal device, or coupled with the PUSCH resources of the terminal device. Other terminal devices in the group are unaware of this coupling or multiplexing. In this case, the time when the terminal device sends feedback is different from the time when other terminal devices send feedback, so the time when the RTT timer is started or restarted is different, which in turn causes the time when the retransmission timer of the terminal device and other terminal devices are started to be different.

[0185] Difference 3: Different terminal devices have different receiving states. For the same data, some terminal devices send ACK after receiving it, while some terminal devices send NACK after receiving it. This causes different terminal devices to start or restart the retransmission timer in different situations.

[0186] Difference 4: HARQ feedback transmissions may be dropped. After HARQ feedback is dropped, the terminal device does not start or restart the RTT timer. Therefore, if some terminal devices have their HARQ feedback dropped while others transmit HARQ feedback normally, different terminal devices may start or restart the RTT timer differently, and thus the retransmission timer may start or restart differently.

[0187] Difference 5: For end devices that support NACK-only, they do not send an ACK when they successfully receive data and only send a NACK when they fail to receive data. Therefore, when a NACK-only end device successfully receives data, it does not start or restart the RTT timer, and consequently, does not start or restart the retransmission timer. This results in different situations when different end devices start or restart the retransmission timer.

[0188] For example, in MBS, for PTM transmission, each group of multicast services corresponds to a set of DRX configurations.

[0189] Based on the differences between multicast mode and unicast mode described above, if the unicast DRX mechanism is applied to the multicast DRX mechanism, the activation time periods of different terminal devices will not be aligned.

[0190] Furthermore, when the activation times of the terminal devices in the group are not aligned, the following two situations may occur:

[0191] Case 1: The running times of the retransmission timers of all terminal devices in the group do not have a common intersection.

[0192] Because there is no common intersection, the network device cannot perform a PTM transmission within the retransmission timer period of all terminal devices in the group so that all terminal devices in the group can receive the sent data packets. Therefore, in order for all terminals to receive the data transmitted by the network device, the network device has two possible operations:

[0193] Possible operation 1: The network device sends a new or retransmitted data packet via PTM transmission during the common intersection of the activation time periods of all terminal devices in the MBS group.

[0194] Because there is no common intersection between the retransmission timers of the terminal devices in the group during this DRX cycle, in order to realize PTM transmission, the network device needs to send the data packets that should have been sent during the retransmission timer of this DRX cycle to the terminal devices during the common intersection of the activation time periods of the terminal devices in the group (that is, during the operation of the on duration timer and the inactivity timer) in the next DRX cycle.

[0195] From the above description, it can be seen that in this possible operation, because the retransmission activation time period controlled by the retransmission timer in this DRX cycle is not aligned, the network device chooses not to transmit the data packet in the retransmission activation segment of this DRX cycle, but in the activation time of the next DRX cycle. Therefore, the start of the retransmission timer in this DRX cycle is meaningless, and the terminal device performs meaningless monitoring in the retransmission activation time period; it results in power consumption and increases data transmission delay.

[0196] Possible operation two: The network device performs multiple PTM transmissions for the same data packet during the operation period of the retransmission timer of the terminal devices in the group, so that all terminal devices can receive at least one PTM transmission of the same data packet during their respective activation time periods.

[0197] Because there is no common intersection, in order for all end devices in the group to receive data packets during the retransmission timer running period, the network device needs to perform multiple PTM transmissions during multiple intersections, depending on the different intersections of the retransmission timers running time of the end devices in the group. This operation may require the network device to transmit data packets multiple times, wasting communication resources.

[0198] Case 2: The running times of the retransmission timers of all terminal devices in the group have a common intersection;

[0199] In this case, the network device can determine the start time of the RTT timer and the start time of the retransmission timer based on the time when the terminal devices in the group send feedback signals. It can then determine the common intersection of the retransmission timers of all terminal devices in the group. During this common intersection, the network device performs PTM transmission so that all terminal devices in the group can receive the transmitted data packets. However, the common intersection is determined based on the retransmission timers of all terminal devices in the group. For each terminal device, it is impossible to receive data packets at different retransmission times outside the common intersection, so the monitoring performed by the terminal device is meaningless. For example, if the retransmission time of terminal device 1 in the group is from 1:00 to 3:00, the retransmission time of terminal device 2 is from 1:30 to 3:30, and the retransmission time of terminal device 3 is from 2:00 to 4:00, and the common intersection of the retransmission times of all terminal devices in the group is determined to be from 2:00 to 3:00, then for terminal device 1, the retransmission time from 1:00 to 2:00 is meaningless. The same applies to the other terminal devices.

[0200] Therefore, to summarize, if the retransmission activation periods / activation times of all terminal devices in an MBS group are aligned during a DRX cycle, the network device can use a single PTM transmission to ensure that all terminal devices receive data packets during the retransmission activation period. This allows the terminal devices to receive data packets throughout the retransmission activation period, eliminating meaningless monitoring. However, if the retransmission activation periods / activation times of all terminal devices in an MBS group are not aligned during a DRX cycle, the network device may transmit data in a manner that leads to the adverse effects described above.

[0201] It should be noted that the above issues are explained using the MBS scenario as an example. The issues in V2X are similar and will not be further elaborated here.

[0202] Therefore, if the unicast DRX mechanism is applied to MBS, how to align the activation times of different terminal devices is an urgent problem to be solved.

[0203] Furthermore, for various situations in which a terminal device determines not to transmit HARQ feedback, if a unicast DRX mechanism is applied to the aforementioned situations, the RTT timer will not be started when the terminal device does not transmit HARQ feedback, and further, the retransmission timer monitoring will not be started or restarted. Therefore, the terminal device that determines not to transmit HARQ feedback cannot start the retransmission timer and thus cannot receive newly transmitted or retransmitted data packets during the retransmission timer. Therefore, it is necessary to provide a solution that enables the terminal device to receive subsequent data packets that should be transmitted during the retransmission timer when the terminal device determines not to transmit HARQ feedback.

[0204] To solve the above problems, the present application proposes a discontinuous reception control method, device and system to solve the problem of how to align the activation time periods of different terminal devices.

[0205] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Among them, in the description of the present application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship. For example, A / B can represent A or B; "and / or" in the present application is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit differences. At the same time, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0206] In addition, the network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0207] The discontinuous reception control method provided in the embodiments of the present application can be applied to various communication systems. For example, the discontinuous reception control method provided in the embodiments of the present application can be applied to a long-term evolution (LTE) system, a fifth-generation (5G) system, or other similar new systems for the future, and the embodiments of the present application do not specifically limit this. In addition, the term "system" and "network" can be used interchangeably.

[0208] The discontinuous reception control method provided in the embodiment of the present application can be applied to the NG-RAN (Next Generation Radio Access Networks) system. The overall architecture of the NG-RAN is as follows: Figure 2 As shown. Among them, an NG-RAN node can be an NR Node B (NR Node B, gNB), which is used to provide NR user plane and control plane protocol terminals to terminal devices. Or, it can be a next generation evolved Node B (next generation eNodeB, ng-eNB), which is used to provide evolved-universal terrestrial radio access (E-UTRA) user plane and control plane protocol terminals to terminal devices. The gNB and ng-eNB are connected through the Xn interface, which is the network interface between NG-RAN nodes. The gNB or ng-eNB is connected to the 5GC through the NG interface, which is the interface between the NG-RAN node and the 5GC. Specifically, the gNB or ng-eNB is connected to the access and mobility management function (AMF) through the NG-C interface, and is connected to the user plane function (UPF) through the NG-U interface.

[0209] like Figure 3 As shown, a communication system 30 is provided in an embodiment of the present application. The communication system 30 includes a first communication device 40 and a second communication device 50. It should be understood that Figure 3The schematic diagram of the architecture of the communication system 30 to which the discontinuous reception control method provided in the embodiments of the present application is provided for illustrative purposes only, and is not intended to limit the communication system 30 to only one first communication device 40 or one second communication device 50. In other words, the communication system 30 may include multiple first communication devices 40 and / or multiple second communication devices 30, which is not limited in the present application and is described uniformly here, and will not be further elaborated below.

[0210] It should be noted that Figure 3 This is only a schematic diagram. Although not shown, the communication system 30 may also include other network devices, such as one or more core network devices, wireless relay devices, and wireless backhaul devices, which are not specifically limited here. The network devices can be connected to the core network devices via wireless or wired means. The core network device and the network device 40 can be independent and different physical devices, or the functions of the core network device and the logical functions of the network device 40 can be integrated into the same physical device, or the functions of some core network devices and some network devices 40 can be integrated into one physical device. This embodiment of the present application does not specifically limit this.

[0211] by Figure 3 Taking the interaction between the first communication device 40 and any second communication device 50 as an example, in one possible implementation, the first communication device 40 receives first control information from the second communication device 50, the first control information being used to schedule first data, the first data being multicast data or data transmitted in a multicast manner; or, the first communication device 40 receives first data from the second communication device 50, the first data being multicast data or data transmitted in a multicast manner; or, the first communication device 40 receives first control information and first data from the second communication device 50, the first control information being used to schedule the first data, the first data being multicast data or data transmitted in a multicast manner; the first communication device 40 starts or restarts a first timer or a second timer based on a first time; wherein the first timer is used to indicate the duration for which the first communication device 40 receives retransmitted data; and the second timer is used to indicate the duration before the first communication device 40 receives retransmitted data. The specific implementation of this solution will be described in detail in subsequent method embodiments and will not be elaborated upon here. Based on the discontinuous reception control method provided in the embodiment of the present application, the first communication device receiving data can start or restart the first timer or the second timer according to the first time. Compared with the existing DRX mechanism, the start or restart time of the first timer or the second timer can be aligned, thereby aligning the activation time of different communication devices.

[0212] Taking the interaction between a first communication device 40 and any second communication device 50 as an example, in one possible implementation, the first communication device 40 receives first control information from the second communication device 50, the first control information being used to schedule first data, where the first data is multicast data or data transmitted in a multicast manner; or, the first communication device 40 receives first data from the second communication device 50, where the first data is multicast data or data transmitted in a multicast manner; or, the first communication device 40 receives first control information and first data from the second communication device 50, the first control information being used to schedule the first data, where the first data is multicast data or data transmitted in a multicast manner; the first communication device 40 controls the duration of a first timer based on a first time, wherein the first timer is used to indicate the duration for which the first communication device 40 receives retransmitted data. Since, in this solution, the first communication device 40 can control the duration of the first timer based on the first time, it can be understood that all communication devices in the group to which the first communication device belongs also control the duration of the first timer based on the first time, thereby aligning the end time of the first timer by controlling the duration of the first timer, thereby aligning the activation end times of different communication devices.

[0213] Taking the interaction between a first communication device 40 and any second communication device 50 as an example, in one possible implementation, the first communication device 40 is configured to receive first control information from the second communication device 50, the first control information being used to schedule first data; and / or the first communication device 40 is configured to receive the first data from the second communication device 50. The first communication device 40 is further configured to determine not to transmit first hybrid automatic repeat request (HARQ) feedback, the first HARQ feedback being associated with the first data. The first communication device 40 is further configured to start or restart a first timer or a second timer based on a first time; the first timer is configured to indicate the duration for the first communication device 40 to receive retransmissions of the first data; and the second timer is configured to indicate the duration before the first communication device 40 receives retransmissions of the first data. Because in this solution, after the first communication device determines not to transmit HARQ feedback, it also starts or restarts the first timer or the second timer based on the first time, data can be received during the period when the first timer is started or restarted. In contrast, in the prior art, after the first communication device determines not to transmit HARQ feedback, it does not start or restart the first timer or the second timer because it does not send a feedback signal. Therefore, this solution solves the problem in the prior art that, after the first communication device determines not to transmit HARQ feedback, it cannot receive data that may be sent subsequently.

[0214] Optionally, the second communication device in the embodiment of the present application may be a network device, which is a device that connects a terminal device to a wireless network. It may be a base station, an evolved NodeB (eNodeB) in a fourth-generation mobile communication technology (4th generation, 4G) system, a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a wireless-fidelity (Wi-Fi) system, including a transmission node, a transceiver node, a relay device, or a small station or micro station with base station functions; it may also be a module or unit that completes part of the functions of a base station, for example, a centralized unit (CU) or a distributed unit (DU). The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. In this application, unless otherwise specified, the network device refers to the wireless access network device.

[0215] Optionally, the first communication device or the second communication device in the embodiment of the present application may be a terminal device, and the terminal device may refer to an access terminal, a user unit, a user station, a mobile station, a mobile station, a relay station, a remote station, a remote terminal, a mobile device, a user terminal (user terminal), a user equipment (User Equipment, UE), a terminal (terminal), a wireless communication device, a user agent, a user device, a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a laptop, a wearable device, a machine type communication terminal, a terminal device in a future 5G network or a terminal device in a future evolved PLMN or a terminal device in a future vehicle network, etc. The embodiment of the present application is not limited to this.

[0216] The following will be combined Figures 1 to 5 The discontinuous reception control method provided in the embodiment of the present application is described in detail.

[0217] It should be noted that the message names between network elements or the names of parameters in the messages in the following embodiments of the present application are only examples, and other names may be used in specific implementations. The embodiments of the present application do not specifically limit this.

[0218] like Figure 6 As shown, a discontinuous reception control method provided by an embodiment of the present application includes the following steps S601-S602:

[0219] S601. A first communication device receives first control information, where the first control information is used to schedule first data, where the first data is multicast data or data transmitted in a multicast manner; or, the first communication device receives first data, where the first data is multicast data or data transmitted in a multicast manner; or, the first communication device receives first control information and first data, where the first control information is used to schedule the first data, where the first data is multicast data or data transmitted in a multicast manner. Correspondingly, a second communication device sends first control information, where the first control information is used to schedule the first data, where the first data is multicast data or data transmitted in a multicast manner; or, the second communication device sends first data, where the first data is multicast data or data transmitted in a multicast manner; or, the second communication device sends first control information and first data, where the first control information is used to schedule the first data, where the first data is multicast data or data transmitted in a multicast manner.

[0220] First, for easier understanding, some concepts in step S601 are explained.

[0221] In the embodiment of the present application, the first control information may include or be understood as any one or more of the following:

[0222] (1) First DCI.

[0223] In an MBS scenario, the first control information may be a DCI. Exemplarily, the first DCI is used to schedule first data, the first data being downlink data, multicast data or data transmitted in a multicast manner. The first communication device is a terminal device, and the second communication device is a network device.

[0224] (2) First sidelink control information (SCI).

[0225] In a V2X scenario, the first control information may be an SCI. Exemplarily, the first SCI is used to schedule first data, the first data is SL data, and the first data is multicast data. The first communication device and the second communication device may be terminal devices.

[0226] It should be noted that the first control information can also be replaced by the second information or the first DCI, etc., which is not limited in this application, and the first control information may change with the evolution of the communication system, and this application does not limit it to DCI or SCI.

[0227] Optionally, the first control information is transmitted in a unicast manner, or the first control information is transmitted in a multicast manner.

[0228] For example, the first control information is a first DCI, the first DCI is transmitted in a unicast manner, or the first DCI is transmitted in a multicast manner.

[0229] The first control information transmitted in a unicast manner or the first control information transmitted in a unicast manner may include / be understood as any one or more of the following:

[0230] (1) The first control information is transmitted on a first resource, where the first resource is a resource associated with unicast.

[0231] For example, the first resource being a resource associated with unicast can be understood as: the first resource is within the BWP corresponding to the unicast.

[0232] For example, the first resource may be a PDCCH resource.

[0233] (2) The first control information is scrambled by the first RNTI.

[0234] The first RNTI can be used for any one or more of the following: for unicast, for scheduling dynamic resources, for retransmission resources of dynamic resources, for activating configuration resources, for reactivating configuration resources, for deactivating configuration resources, for scheduling retransmission resources of configuration resources, and for scrambling (for example, for scrambling PDCCH or PDSCH).

[0235] Exemplarily, the first RNTI may be a C-RNTI or a configured scheduling RNTI (CS-RNTI).

[0236] Exemplarily, the first control information can be understood as DCI.

[0237] In this application, DCI can be replaced by PDCCH. PDCCH can be replaced by DCI.

[0238] For example, the first control information transmitted in a unicast manner may be: PDCCH / DCI scrambled by C-RNTI, or DCI transmitted on a PDCCH scrambled by C-RNTI.

[0239] It can be understood that “the first communication device receives the first control information transmitted in a unicast manner” means that the first control information is directed to the first communication device, that is, the first control information is specifically sent to the first communication device.

[0240] The first control information transmitted in a multicast manner or the first control information transmitted in a multicast manner may include or be understood as any one or more of the following:

[0241] (1) The first control information is transmitted on a third resource, where the third resource is a resource associated with multicast.

[0242] The first resource being a resource associated with multicast can be understood as follows: the third resource is within the public frequency resource corresponding to multicast.

[0243] For example, the third resource may be a PDCCH resource.

[0244] (2) The first control information is scrambled by the second RNTI.

[0245] For example, the first control information transmitted in a multicast manner may be: PDCCH / DCI scrambled by G-RNTI, or DCI transmitted on a PDCCH scrambled by G-RNTI.

[0246] It can be understood that “the first communication device receives the first control information transmitted in a multicast manner” means that the first control information is directed to multiple communication devices, that is, the first control information is sent to the multiple communication devices corresponding to the multicast.

[0247] The first data being data transmitted in a multicast manner may include / replace / be understood as: the first data is transmitted in a multicast manner.

[0248] The first data is data transmitted in a multicast manner and may include / be understood as any one or more of the following:

[0249] (1) The first data is transmitted on the second resource, where the second resource is a resource associated with multicast.

[0250] That the second resource is a resource associated with multicast can be understood as: the second resource is within the common frequency resource corresponding to multicast, or the second resource is an SPS resource corresponding to multicast.

[0251] The SPS resources corresponding to the multicast can be understood as the public SPS resources corresponding to the multicast (eg, PDSCH resources). It can be understood that a communication device receiving the multicast can receive data on the SPS resources corresponding to the multicast.

[0252] Exemplarily, the first communication device can obtain the configuration of SPS resources or obtain the correspondence between SPS resources / SPS resource configuration and multicast through any one or more of broadcast messages (e.g., system information, multicast control channel (MCCH) messages), radio resource control (RRC) messages (e.g., dedicated RRC messages), medium access control (MAC) messages (e.g., MAC control messages (CE)), physical layer messages (e.g., DCI), and pre-configuration.

[0253] For example, after the communication device obtains the SPS configuration, it may need to be activated (for example, through physical layer message / DCI activation) before using the resource to receive data; it may also be possible to directly use the resource to receive data (ie, no activation is required).

[0254] The common frequency resource corresponding to multicast can be understood as: the BWP corresponding to multicast, or the frequency range corresponding to multicast.

[0255] For example, the second resource may be a PDSCH resource.

[0256] (2) The first data is scrambled using the second RNTI.

[0257] The second RNTI can be used for any one or more of the following: for multicast, for scheduling dynamic resources, for retransmission resources of dynamic resources, for activating configuration resources, for reactivating configuration resources, for deactivating configuration resources, for scheduling retransmission resources of configuration resources, and for scrambling (for example, for scrambling PDCCH or PDSCH).

[0258] Exemplarily, the second RNTI may be a G-RNTI.

[0259] For example, the first data may be multicast data.

[0260] For example, the first data may be newly transmitted data and / or retransmitted data.

[0261] For example, the first data transmitted in a multicast manner may be: PDSCH scrambled by G-RNTI, or data transmitted on PDSCH scrambled by G-RNTI, or data scrambled by G-RNTI.

[0262] It is understood that "the first data is data transmitted in a multicast manner" means that the first data may not be targeted only at the first communication device, that is, the first data may not be sent specifically to the first communication device. For example, multiple communication devices may receive the first data transmitted in a multicast manner. These multiple communication devices may be communication devices that are interested in the first data, or may belong to the same multicast group / multicast as the first communication device.

[0263] It is understandable that, because the first communication device receives the first data transmitted in a multicast manner, the first data sent by the second communication device to the multiple communication devices is identical. The first data received by the multiple communication devices is identical.

[0264] The first data is multicast data and may include / be understood as any one or more of the following:

[0265] (1) The first data is transmitted on the second resource, where the second resource is a resource associated with multicast.

[0266] (2) The first data is scrambled using the second RNTI.

[0267] For example, the first data may be data transmitted in a C+G transmission mode, or may be data transmitted in a G+G transmission mode.

[0268] (3) The first control information indicates that the first data is multicast data, or the first control information indicates that the transmission corresponding to the first control information is multicast (transmission).

[0269] For example, the first SCI indicates that the first data is multicast data, or the first SCI indicates that the transmission corresponding to the first SCI is multicast (transmission).

[0270] For example, when the first data is downlink data, the first data is multicast data or data transmitted in a multicast manner.

[0271] For example, when the first data is SL data, the first data is multicast data.

[0272] The first control information for scheduling first data transmitted in a multicast manner may include or be understood as any one or more of the following:

[0273] (1) The first control information indicates that the first data is transmitted in a multicast manner.

[0274] The first control information indicating that the first data is transmitted in a multicast manner includes any one or more of the following: the format of the first control information / the scrambling information of the first control information / the indication information in the first control information (for example, one or more fields) indicating that the first data is transmitted in a multicast manner.

[0275] The first communication device receives the first control information and determines that the first data is transmitted in a multicast manner according to the format of the first control information / the scrambling information of the first control information / the indication information in the first control information (eg, one or more fields).

[0276] (2) The first control information indicates that the first data is scrambled by the second RNTI.

[0277] The first control information indicating that the first data is encrypted by the second RNTI includes any one or more of the following: the format of the first control information / indication information within the first control information (for example, one or more fields) indicates that the first data is encrypted by the second RNTI.

[0278] For example, the first control information indicates that the first data is scrambled by G-RNTI1.

[0279] (3) The first control information indicates that the first data is data corresponding to multicast (service) 1.

[0280] The first control information indicating that the first data is data corresponding to multicast (service) 1 includes any one or more of the following: the format of the first control information / indication information in the first control information (for example, one or more fields) indicating that the first data is data corresponding to multicast (service) 1.

[0281] It can be understood that the first communication device obtains the correspondence between multicast (service) 1 and G-RNTI1, and knows to use G-RNTI1 to receive the first data.

[0282] (4) The first control information is used to schedule the first data.

[0283] The first control information indicates the resource location of the first data and / or information required for decoding the first data, for example, time domain resources and / or frequency domain resources, modulation and coding scheme (MCS), HARQ process ID (HARQ process ID), new data indicator (NDI), SL process ID, etc.

[0284] (5) The first control information indicates downlink transmission.

[0285] The downlink transmission may be understood as first data. For example, the downlink transmission is PDSCH, and the first control information is PDCCH / DCI scrambled by G-RNTI.

[0286] It is understandable that multiple communication devices may receive different PDCCH / DCI (for example, the PDCCH / DCI received by different communication devices is scrambled by the C-RNTI corresponding to each communication device), and the different PDCCH / DCI schedules the same PDSCH / data.

[0287] Exemplarily, the first communication device receives a DCI / PDCCH scrambled by a C-RNTI, where the DCI / PDCCH schedules a PDSCH / data scrambled by a G-RNTI.

[0288] Exemplarily, the first communication device receives a DCI / PDCCH scrambled by the G-RNTI, where the DCI / PDCCH schedules a PDSCH / data scrambled by the G-RNTI.

[0289] Exemplarily, the first communication device receives PDSCH / data scrambled by the G-RNTI.

[0290] Optionally, the first data is associated with any one or more of multicast, first multicast, first service, and second RNTI.

[0291] The first service may include any one or more of the following: a multicast service, and a first multicast service.

[0292] Any one or more of the groupcast, the first groupcast, and the first service are associated with the second RNTI.

[0293] Multicast-associated DRX can be understood / replaced by any one or more of the following: first multicast-associated DRX, first service-associated DRX, and second RNTI-associated DRX.

[0294] For example, the multicast-associated DRX / first multicast-associated DRX may be the DRX associated with the first source ID+the first destination ID.

[0295] For example, the multicast-associated DRX / first multicast-associated DRX may be a DRX associated with the first source ID+the first destination ID+the communication type.

[0296] The first source ID and the first destination ID are associated with the multicast or the first multicast.

[0297] The communication type includes any one or more of unicast, multicast, and broadcast. For example, the communication type is multicast.

[0298] Optionally, the communication device receiving the data corresponding to the first data / second RNTI may include / replace / be understood as any one or more of the following: a communication device in the multicast (or multicast service) corresponding to the first data / second RNTI, a communication device in the group corresponding to the multicast (or multicast service) corresponding to the first data / second RNTI, a communication device receiving the multicast (or multicast service) corresponding to the first data / second RNTI, a communication device interested in the multicast (or multicast service) corresponding to the first data / second RNTI, a communication device receiving data corresponding to any one or more of multicast, first multicast, first service, and second RNTI, a communication device interested in data corresponding to any one or more of multicast, first multicast, first service, and second RNTI, a communication device interested in any one or more of multicast, first multicast, first service, and second RNTI, a communication device belonging to / located in the group corresponding to any one or more of multicast, first multicast, first service, and second RNTI.

[0299] S602. The first communication device starts or restarts the first timer or the second timer according to the first time; wherein the first timer (or the duration of the first timer) is used to indicate the duration for the first communication device to receive the retransmitted data; the second timer (or the duration of the second timer) is used to indicate the duration before the first communication device receives the retransmitted data.

[0300] First, for easier understanding, some concepts in step S602 are explained.

[0301] The duration used to indicate the first communication device receiving the retransmitted data may include / be understood as any one or more of the following: the duration (e.g., minimum duration) used to indicate the first communication device receiving / receiving the retransmitted data (e.g., DL data or SL data), the duration (e.g., minimum duration) used to indicate the first communication device expecting to receive / receive the retransmitted data (e.g., DL data or SL data), the duration (e.g., minimum duration) used to indicate the first communication device waiting before receiving / receiving the retransmitted data (e.g., DL data or SL data), and the duration (e.g., minimum duration) used to indicate the first communication device expecting to wait before receiving / receiving the retransmitted data (e.g., DL data or SL data).

[0302] For example, the first data is associated with the first HARQ process.

[0303] For example, the first timer is associated with the second HARQ process.

[0304] For example, the second timer is associated with the third HARQ process.

[0305] It can be understood that the first HARQ process and the second HARQ process can be understood as the same HARQ process or two associated HARQ processes.

[0306] It can be understood that the first HARQ process and the third HARQ process can be understood as the same HARQ process or two associated HARQ processes.

[0307] It can be understood that the second HARQ process and the third HARQ process can be understood as the same HARQ process or two associated HARQ processes.

[0308] The duration for indicating that the first communication apparatus receives retransmitted data may include / be understood as: a duration (eg, maximum duration) for indicating that the first communication apparatus receives / receives retransmitted data (eg, DL data or SL data).

[0309] The first timer is a timer corresponding to DRX associated with multicast.

[0310] Exemplarily, the first timer may be understood as a retransmission timer, or a retransmission timer corresponding to DRX associated with multicast.

[0311] The second timer is a timer corresponding to DRX associated with multicast.

[0312] Exemplarily, the second timer may be understood as an RTT timer, or an RTT timer corresponding to DRX associated with multicast.

[0313] In summary, the first communication device starts or restarts the first timer or the second timer according to the first time. It can be understood that the first time is an agreed time for the communication device receiving the data corresponding to the first data / second RNTI. After the first time is determined, the communication device receiving the data corresponding to the first data / second RNTI (for example, some or all communication devices) will start or restart the first timer or the second timer according to the first time. Therefore, the start or restart time of the first timer or the second timer of different communication devices receiving the data corresponding to the first data / second RNTI is aligned. Because the duration of the first timer or the second timer is certain, the end time of the first timer or the second timer of different communication devices receiving the data corresponding to the first data / second RNTI is also aligned, thereby enabling the activation time of different communication devices receiving the data corresponding to the first data / second RNTI to be aligned. This method takes into account the possible multiplexing and routing issues, so that the activation time of different communication devices receiving the data corresponding to the first data / second RNTI can be aligned. This avoids the first communication device from not receiving the data (for example, retransmitted data or newly transmitted data) sent by the second communication device due to being in a sleep state, thereby improving the reliability of data reception. At the same time, it avoids the first communication device from performing meaningless monitoring, which is beneficial to the energy saving of the first communication device and reduces the communication delay.

[0314] In step S602, the first communication device needs to determine the first time in order to start or restart the first timer or the second timer according to the first time. The following describes the schemes for determining the first time by the first communication device, taking schemes 1 to 4 as examples.

[0315] Option 1: The first time may include: the time domain position of the first feedback resource or before the time domain position of the first feedback resource or after the time domain position of the first feedback resource; or, the first time includes the xth time domain resource after or before the time domain position of the first feedback resource or before the xth time domain resource or after the xth time domain resource; or, the time domain position of the first transmission resource or before the time domain position of the first transmission resource or after the time domain position of the first transmission resource; or, the yth time domain resource after or before the time domain position of the first transmission resource or before the yth time domain resource or after the yth time domain resource.

[0316] For example, x is a positive integer greater than or equal to 1.

[0317] For example, y is a positive integer greater than or equal to 1.

[0318] The first feedback resource is associated with the first data.

[0319] Optionally, the first feedback resource may be a resource used by the first communication apparatus to send feedback to the second communication apparatus regarding the first data.

[0320] It can be understood that the first feedback resource can be a feedback resource corresponding to another communication device. The another communication device is not the first communication device. For example, the another communication device can be a communication device receiving data corresponding to the first data / second RNTI.

[0321] In a possible implementation, the first communication device is a terminal device, the second communication device is a network device, and the first feedback resource can be a PUCCH resource. This implementation can be applied to an MBS scenario.

[0322] In another possible implementation, the first communication device is a terminal device, the second communication device is a terminal device, and the first feedback resource can be a PSFCH resource. This implementation can be applied to a V2X scenario.

[0323] The first transmission resource includes a resource for transmitting the first control information or the first data. In a possible implementation, the first communication device is a terminal device, the second communication device is a network device, and the first transmission resource can be a PDCCH resource or a PDSCH resource. This implementation can be applied to an MBS scenario.

[0324] In another possible implementation, the first communication device is a terminal device, the second communication device is a terminal device, and the first transmission resource can be a physical sidelink shared channel (PSSCH) or a physical sidelink control channel (PSCCH) resource. This implementation can be applied to a V2X scenario.

[0325] In scheme one, the first communication device needs to obtain the time domain position of the first feedback resource to determine the first time. Details are described below.

[0326] First, for the convenience of understanding, some concepts in scheme one are described.

[0327] In this application, the time domain position of the first feedback resource can be understood / alternatively as: the first feedback resource.

[0328] Optionally, the time domain position of the first feedback resource can include / understand / alternatively as: a start position (for example, a start time / moment) or an end position (for example, an end time / moment) or an intermediate position (for example, an intermediate time / moment) of the first feedback resource in the time domain. For example, the time domain position of the first feedback resource can include / understand / alternatively as: a start time (for example, a start moment) or an end time (for example, an end moment) or an intermediate time (for example, an intermediate moment) of the first feedback resource. For example, Figure 7aAs shown, the first feedback resource corresponds to a period of time in the time domain. Therefore, the time domain position of the first feedback resource can include any time point or any time period (for example, any smaller time period) in the time period corresponding to the first feedback resource. For example, the time domain position of the first feedback resource can refer to: a starting position or an ending position.

[0329] Optionally, the time domain location of the first feedback resource may include / be understood / replaced with: any one or more of the superframe, frame, subframe, time slot, subslot, symbol, or other time domain units in which the first feedback resource is located; or any one or more of the superframe, frame, subframe, time slot, subslot, symbol, or other time domain units in which the starting position (e.g., starting time / time), ending position (e.g., ending time / time), or intermediate position (e.g., intermediate time / time) of the first feedback resource in the time domain is located; or any one or more of the superframe, frame, subframe, time slot, subslot, symbol, or other time domain units in which the starting time (e.g., starting time), ending time (e.g., ending time), or intermediate time (e.g., intermediate time) of the first feedback resource is located. It is understood that the time domain location of the first feedback resource may include: the time domain location of the first feedback resource at the granularity of a superframe, frame, subframe, time slot, subslot, symbol, or other time domain units.

[0330] For example, Figure 8 As shown, a frame contains 10 time slots ( Figure 8 (Not fully shown in the figure), a time slot contains 14 symbols for illustration. The first feedback resource is located in symbols 2 to 4 of time slot n of frame a. The time domain location of the first feedback resource may include: frame a, or time slot n, or time slot n of frame a, or symbol 2, or symbol 3, or symbol 4, or symbol 4 of time slot n, or symbol 4 of time slot n of frame a, or symbols 2 to 4, or symbols 2 to 3, etc.

[0331] In the embodiment of the present application, "before" the time domain position of the first feedback resource can be understood as the time domain position before the time domain position of the first feedback resource. "After" the time domain position of the first feedback resource can be understood as the time domain position after the time domain position of the first feedback resource. For example, the time domain position of the first feedback resource is symbols 2 to 4 of time slot n. The "before" first feedback resource may include symbol 1 of time slot n or time slot n-1, and the "after" first feedback resource may include symbol 5 or time slot n+1. The embodiment of the present application does not limit the time domain unit granularity of the first time when the first time includes "before" or "after" the time domain position of the first feedback resource.

[0332] In this application, "the time domain position of the first transmission resource" can be understood / replaced as: the first transmission resource.

[0333] Optionally, the time domain position of the first transmission resource may include / be understood / replaced with: the starting position (e.g., starting time / moment) or the ending position (e.g., ending time / moment) or the intermediate position (e.g., the intermediate time / moment) of the first transmission resource in the time domain. For example, the time domain position of the first transmission resource may include / be understood / replaced with: the starting time (e.g., starting moment) or the ending time (e.g., ending moment) or the intermediate time (e.g., the intermediate moment) of the first transmission resource. For example, Figure 7b As shown, the first transmission resource corresponds to a period of time in the time domain. Therefore, the time domain position of the first transmission resource can include any time point or any time period (e.g., any smaller time period) in the time period corresponding to the first transmission resource. For example, the time domain position of the first transmission resource can refer to: a starting position or an ending position.

[0334] Optionally, the time domain position of the first transmission resource may include / be understood / replaced by: any one or more of the superframe, frame, subframe, time slot, subslot, symbol, or other time domain units in which the first transmission resource is located; or any one or more of the superframe, frame, subframe, time slot, subslot, symbol, or other time domain units in which the starting position (e.g., starting time / moment) or ending position (e.g., ending time / moment) or intermediate position (e.g., intermediate time / moment) of the first transmission resource in the time domain is located, or any one or more of the superframe, frame, subframe, time slot, subslot, symbol, or other time domain units in which the starting time (e.g., starting moment) or ending time (e.g., ending moment) or intermediate time (e.g., intermediate moment) of the first transmission resource is located. It can be understood that the time domain position of the first transmission resource may include: the time domain position of the first transmission resource at the granularity of a superframe, frame, subframe, time slot, subslot, symbol, or other time domain units.

[0335] For example, Figure 8 As shown, a frame includes 10 time slots and a time slot includes 14 symbols. The first transmission resource is located at symbols 2 to 4 of time slot n of frame a. The time domain position of the first transmission resource may include: frame a, or time slot n, or time slot n of frame a, or symbol 2, or symbol 3, or symbol 4, or symbol 4 of time slot n, or symbol 4 of time slot n of frame a, or symbols 2 to 4, or symbols 2 to 3, etc.

[0336] In the embodiment of the present application, the time domain position before the first transmission resource can be understood as the time domain position before the time domain position of the first transmission resource. The time domain position after the first transmission resource can be understood as the time domain position after the time domain position of the first transmission resource. For example, the time domain position of the first transmission resource is symbols 2 to 4 of time slot n, the first transmission resource before can include symbol 1 of time slot n or time slot n-1, and the first transmission resource after can include symbol 5 or time slot n+1. The embodiment of the present application does not limit the time domain unit granularity of the first time when the first time includes before or after the time domain position of the first transmission resource.

[0337] In this application, "time domain resources" can be understood / replaced by: time domain units.

[0338] Among them, the time domain resources can be time domain resources / time domain units with granularity of superframe, frame, subframe, time slot, sub-time slot, symbol, or others.

[0339] The time domain unit may be a time domain unit with a granularity of a superframe, a frame, a subframe, a time slot, a sub-time slot, a symbol, or others.

[0340] Exemplarily, the first time may be the time domain position of the first feedback resource / the xth time slot / symbol after the first feedback resource.

[0341] Exemplarily, the first time may be the time domain position of the first transmission resource / the yth time slot / symbol after the first feedback resource.

[0342] Next, how the first communication device determines the first time will be described.

[0343] Optionally, the first communication device may determine the first time according to the following steps:

[0344] (1) The first communication device obtains instruction information.

[0345] (2) The first communication device determines the first time according to the indication information.

[0346] The above-mentioned indication information includes any one or more of the following: information of the first feedback resource set, information of the first identifier, information of the first feedback resource, and information of the first transmission resource.

[0347] Optionally, the first feedback resource set includes any one or more of the following: feedback resources corresponding to the first data, feedback resources corresponding to the communication device receiving the first data / data corresponding to the second RNTI, and feedback resources corresponding to the first communication device.

[0348] It can be understood that the communication device that receives the first data / data corresponding to the second RNTI may include one or more communication devices.

[0349] For example, the feedback resource corresponding to the communication device receiving the data corresponding to the first data / second RNTI can be understood / replaced as: the feedback resource corresponding to a certain communication device receiving the data corresponding to the first data / second RNTI. For example, the certain communication device can be the first communication device, or can be another communication device.

[0350] In the embodiments of the present application, the indication information can be sent by the second communication device / network equipment to the first communication device, or can be agreed by a protocol or pre-configured, which is not limited in the present application.

[0351] For example, the indication information can be carried in the first control information, or in the RRC message, or in the configuration corresponding to the first service, which is not limited in the present application.

[0352] It should be noted that in the case that the indication information includes multiple information, different information can be obtained by different ways, and the present application does not limit the information included in the indication information to be obtained by the same way.

[0353] It should be noted that the information included in the indication information sent by the second communication device can be explicit indication or implicit indication. For example, for the information of the indication information indicating the first feedback resource, the explicit indication can be the information directly indicating the first feedback resource, and the implicit indication can be the information indicating the first feedback resource set and the first identifier, and the first communication device determines the information of the first feedback resource according to the information of the first feedback resource set and the first identifier.

[0354] Optionally, in the case that the first time includes the xth time domain resource before or after the time domain position of the first feedback resource, the above indication information further includes: the information of x.

[0355] Optionally, in the case that the first time includes the yth time domain resource before or after the time domain position of the first transmission resource, the above indication information further includes: the information of y.

[0356] Optionally, the first identifier includes: the identifier of the communication device corresponding to the first feedback resource, or the identifier of the first feedback resource, or the number of communication devices receiving the data corresponding to the first data / second RNTI, or the group size.

[0357] For example, the identifier of the communication device corresponding to the first feedback resource can include / understand / replace as: the identifier / number of the communication device corresponding to the first feedback resource in the communication devices receiving the data corresponding to the first data / second RNTI.

[0358] For example, the identifier of the first feedback resource may include / be understood / replaced with: the identifier / number of the first feedback resource in the first feedback resource set.

[0359] For example, “the first identifier includes: the identifier / number of the communication device corresponding to the first feedback resource in the communication device receiving the data corresponding to the first data / second RNTI” can be understood / replaced as: the first identifier includes: the identifier / number of the communication device corresponding to the first feedback resource in the communication device in the multicast (or multicast service) corresponding to the first data, or the identifier / number of the communication device corresponding to the first feedback resource in the communication device in the group corresponding to the multicast (or multicast service) corresponding to the first data, or the identifier / number of the communication device corresponding to the first feedback resource in the communication device receiving the multicast (or multicast service) corresponding to the first data / second RNTI, or the identifier / number of the communication device corresponding to the first feedback resource in the multicast (or multicast service) corresponding to the first data / second RNTI, or the identifier / number of the communication device corresponding to the first feedback resource in the group corresponding to the multicast (or multicast service) corresponding to the first data / second RNTI, or the identifier / number of the communication device corresponding to the first feedback resource in the group corresponding to the multicast (or multicast service) corresponding to the first data / second RNTI, or the identifier / number of the communication device corresponding to the first feedback resource in the group corresponding to the second RNTI.

[0360] For example, the number can be understood / replaced as: member ID, or sequence, or serial number.

[0361] For example, in an embodiment of the present application, the information of the first feedback resource or the information of the first transmission resource may directly indicate the time-frequency resource of the first feedback resource or the first transmission resource, or may be implicitly indicated, which is not limited in the present application. For example, the information of the first transmission resource includes configuration parameters of the first transmission resource.

[0362] For example, if the first identifier includes the identifier of the communication device corresponding to the first feedback resource, different communication devices may correspond to different identifiers for the communication device receiving the first data / data corresponding to the second RNTI, and different communication devices may correspond to different feedback resources (for example, each communication device corresponds to one feedback resource). The first communication device may determine the feedback resource corresponding to the first identifier based on the first identifier, and the feedback resource is the first feedback resource.

[0363] For example, if the first identifier includes an identifier of a first feedback resource, there are multiple feedback resources corresponding to the first data, and different feedback resources have different identifiers (for example, each identifier corresponds to a feedback resource). The first communication device can determine the feedback resource corresponding to the first identifier based on the first identifier, and the feedback resource is the first feedback resource.

[0364] It should be noted that, for the feedback resource corresponding to the first data, the present application does not limit whether the different feedback resources or the feedback resources of different communication devices receiving the data corresponding to the first RNTI are frequency-division, or frequency-division, or code-division, or both time-division and code-division, or other various possible allocation manners.

[0365] Therefore, optionally, the time domain positions of the feedback resources corresponding to different communication devices receiving the data corresponding to the first RNTI are the same, or the time domain positions of the feedback resources corresponding to different communication devices receiving the data corresponding to the first RNTI are different.

[0366] The first communication device can determine the first feedback resource according to the information of the first identifier and the information of the set of first feedback resources. It can be understood that the first communication device can determine the first feedback resource based on certain rules and / or algorithms in combination with the information of the first identifier and the information of the set of first feedback resources. The specific rules and / or algorithms are not limited by the present application.

[0367] For example, if the different feedback resources are frequency-division, the first communication device can determine the first feedback resource based on the order from high to low or from low to high in the frequency domain in combination with the information of the first identifier.

[0368] For example, if the different feedback resources are time-division, the first communication device can determine the first feedback resource based on the order from front to back or from back to front in the time domain in combination with the information of the first identifier.

[0369] If the different feedback resources are frequency-division, for example, as shown in Figure 9 If the different feedback resources are frequency-division, the first feedback resource set can be numbered according to the frequency domain position of the feedback resource starting from 1, the first identifier can be 2, and the first communication device can find the corresponding first feedback resource according to 2 in the indication information and the first feedback resource set.

[0370] If the different feedback resources are time-division, it can be understood that when the second communication device decides to retransmit the data, it will affect the first communication device to start or restart the first timer or the position of the first timer. For example, the second communication device has the following two possibilities to decide to retransmit:

[0371] Possibility 1: The second communication device determines to retransmit after determining the feedback / reception status of all communication devices receiving the first data.

[0372] Possibility 2: The second communication device determines to perform retransmission after determining that the number of communication devices receiving the first data fails to reach a certain proportion or number.

[0373] For example, the second communication device can determine whether retransmission is required after determining the feedback / reception status of all first data receiving communication devices, and / or determine which one or more of the C+C transmission mode, C+G transmission mode, and G+G transmission mode to use for retransmission.

[0374] For example, the second communication device can determine whether retransmission is required after determining that the number of communication devices that fail to receive the first data among the communication devices receiving the first data reaches a certain proportion or number, and / or determine which one or more of the C+C transmission mode, C+G transmission mode, and G+G transmission mode to use for retransmission.

[0375] Both of these possibilities require the second communication device to obtain the first communication device's feedback and decide to retransmit based on the time when the first communication device sends feedback (for example, based on the temporal location of the feedback resource used by the first communication device to send feedback). Therefore, the time when the second communication device decides to retransmit may be related to the temporal location of the feedback resource.

[0376] Therefore, in order to correspond to these two possibilities, when the time domain positions of the feedback resources corresponding to different communication devices receiving the data corresponding to the first data / second RNTI are different, in order to match the first time with the time when the network device decides to retransmit, or to avoid the problem that the first communication device misses the data retransmitted by the second communication device due to being in a sleep state, or to avoid the power consumption problem caused by the first communication device performing meaningless monitoring, optionally, the embodiment of the present application further provides a possible implementation method:

[0377] The first feedback resource includes the feedback resource whose time domain position is N / first identifier among the feedback resources associated with the first data, or the first feedback resource includes the last feedback resource in the time domain among the feedback resources associated with the first data.

[0378] For example, N / the first identifier may be the number of communication devices receiving the first data / data corresponding to the second RNTI, the group size, or the number of communication devices in the group.

[0379] Among them, the group size or the number of communication devices in the group can be any one or more of the following: the number of communication devices in the group corresponding to the multicast (or multicast service) corresponding to the first data, the number of communication devices in the group corresponding to the second RNTI, and the number of communication devices in the group corresponding to the multicast (or multicast service) corresponding to the first data / second RNTI.

[0380] Optionally, N / first identifier is less than or equal to the number of feedback resources associated with the first data.

[0381] For example, Figure 10As shown, the first feedback resource is the last feedback resource in the time domain among all feedback resources associated with the first data.

[0382] The above describes how the first communication device determines the first feedback resource based on the first identifier and the first feedback resource set. The following describes another determination method. Optionally, the first feedback resource can be associated with the first communication device. In this method, the first communication device can use its own corresponding feedback resource as the first feedback resource.

[0383] Optionally, when the first feedback resource is associated with the first communication device, the time domain positions of the feedback resources corresponding to different communication devices that receive the first data / data corresponding to the second RNTI are the same. In this manner, because the time domain positions of the feedback resources are the same, when different communication devices use their corresponding feedback resources as the first feedback resource, the first time determined is the same.

[0384] Optionally, the present application also includes that the feedback resources corresponding to the communication device receiving the first data / data corresponding to the second RNTI are the same or different.

[0385] The fact that the feedback resources corresponding to the communication devices receiving the first data / data corresponding to the second RNTI are the same can be understood as: different communication devices receiving the first data share the same feedback resource.

[0386] The fact that the communication devices receiving the first data / data corresponding to the second RNTI have different corresponding feedback resources can be understood as follows: different communication devices receiving the first data / data corresponding to the second RNTI have different feedback resources.

[0387] Option 2: The first time includes after or before the second time, and the duration from the second time is the time of the first time interval or the time before or after the time; or, the first time includes after or before the second time, and the duration from the second time is the zth time domain resource after or before the time of the first time interval or before the zth time domain resource or after the zth time domain resource.

[0388] For details about time domain resources, please refer to the introduction in Solution 1 above and will not be repeated here.

[0389] For example, the first time may be after or before the second time, and the duration from the second time may be the zth time slot / symbol after or before the time of the first time interval.

[0390] In this solution, the first communication device needs to determine the first time according to the second time and the first time interval. Optionally, the first communication device can determine the first time according to the following steps:

[0391] (1) The first communication device obtains instruction information.

[0392] (2) The first communication device determines the first time according to the indication information.

[0393] For example, the indication information includes any one or more of the following: information of the second time, information of the first time interval.

[0394] The granularity of the first time interval may include a superframe, a frame, a subframe, a time slot, a subslot, a symbol, or other time domain unit granularity.

[0395] Optionally, if the first time includes after or before the second time, and the duration from the second time is the zth time domain resource after or before the time of the first time interval or before the zth time domain resource or after the zth time domain resource, the above indication information also includes: information of z.

[0396] One possible implementation of this solution is that the second time includes the time domain position of the first feedback resource, or before the time domain position of the first feedback resource, or after the time domain position of the first feedback resource, or the second time includes the x-th time domain resource after or before the time domain position of the first feedback resource, or before the x-th time domain resource, or after the x-th time domain resource; wherein the first feedback resource is associated with the first data.

[0397] For the content related to the time domain position of the first feedback resource, please refer to the content in the above solution 1, which will not be repeated here.

[0398] Optionally, in this implementation, the second time information may include one or more of the following: information about the first feedback resource set, information about the first identifier, information about the first feedback resource, and information about x. For details about the above information, please refer to the content of Solution 1 and will not be repeated here.

[0399] The first communication device may determine the first feedback resource based on the information of the indicated second time. For specific confirmation, please refer to the content in the above solution 1 and will not be repeated here.

[0400] For the content related to the first feedback resource, please refer to the content in Solution 1 above and will not be repeated here.

[0401] In another possible implementation of the scheme, the second time includes the time domain position of the first transmission resource, or before the time domain position of the first transmission resource, or after the time domain position of the first transmission resource, or the first time includes the yth time domain resource after or before the time domain position of the first transmission resource, or before the yth time domain resource, or after the yth time domain resource.

[0402] The first transmission resource includes a resource for transmitting first control information or first data.

[0403] For the content related to the time domain position of the first transmission resource, please refer to the content in the above solution one and will not be repeated here.

[0404] Specifically, the first data is multicast data or data transmitted in a multicast manner, and the first transmission resource used to transmit the first data is shared or the same for the communication devices receiving the first data. Therefore, the second time determined by different terminal devices receiving the first data is the same. Therefore, different communication devices can determine the same first time based on the same second time and first time interval.

[0405] Solution 3: The first communication device obtains instruction information including information about the first time, and determines the first time according to the instruction information.

[0406] In this solution, the indication information includes information about the first time, and the first communication device can directly determine the first time based on the indication information. For example, the indication information includes any one or more of the following information: system frame number SFN, subframe (or subframe number), time slot, subtime slot, and symbol.

[0407] For example, the first communication device determines the first time according to the indication information, which can be understood as: the first communication device determines any one or more of the system frame number SFN, subframe (or subframe number), time slot, sub-time slot, and symbol in which the first time is located according to the indication information.

[0408] Solution 4: The first time includes the Wth time domain resource before or after the time domain position of the first feedback resource, or before the Wth time domain resource or after the Wth time domain resource.

[0409] The first feedback resource is associated with the first data.

[0410] For example, the first feedback resource is associated with the first communication device.

[0411] In this solution, the first communication device can determine the first time according to the time domain position and parameter W of the first feedback resource.

[0412] Optionally, the first communication device may determine the first time according to the following steps:

[0413] (1) The first communication device obtains instruction information;

[0414] (2) The first communication device determines the first time according to the indication information.

[0415] The indication information includes information of the first feedback resource and / or information of W.

[0416] For example, W is a positive integer greater than or equal to 1.

[0417] In one possible implementation, when the indication information is displayed, the time domain resource and W of the feedback resource corresponding to the first communication device can be directly indicated. When the indication information is implicitly indicated, if the first communication device is configured with the MBS-specific PUCCH-Config, it is equivalent to implicitly indicating that the feedback resources configured by different communication devices are within a time slot. The first communication device can determine the first time based on the time domain resource where the corresponding feedback resource is located.

[0418] Alternatively, if the first communication device is configured with a unicast PUCCH-Config, this implicitly indicates that the feedback resources of different communication devices are not necessarily within the same time slot. In this case, the terminal device may choose not to determine the first time according to solution 4 based on this indication.

[0419] Optionally, the time domain positions of the feedback resources corresponding to different communication devices that receive the data corresponding to the first data / second RNTI are the same; or, the feedback resources corresponding to different communication devices that receive the data corresponding to the first data / second RNTI are located in the same time domain resources.

[0420] For example, the feedback resources corresponding to different communication devices that receive the first data / data corresponding to the second RNTI are located in the same time slot.

[0421] It should be noted that "the feedback resources corresponding to different communication devices receiving the first data / data corresponding to the second RNTI are located in the same time domain resources" does not limit the feedback resources corresponding to different communication devices to being completely aligned in the time domain. For example, the feedback resources of different communication devices may be located on different symbols within a time slot.

[0422] In this case, because the feedback resources corresponding to different communication devices receiving the data corresponding to the first data / second RNTI are the same, or are located within the same time domain resource, the time domain positions of the first feedback resources determined by the different communication devices receiving the data corresponding to the first data / second RNTI are the same. Furthermore, the different communication devices receiving the data corresponding to the first data / second RNTI can determine the same first time based on the time domain position of the first feedback resource and the parameter W. For example, the feedback resources of the different communication devices receiving the data corresponding to the first data / second RNTI are within the same time slot, which is time slot 2, and the indication information indicates that W is 1. The different communication devices receiving the data corresponding to the first data / second RNTI can determine that the first time is time slot 3.

[0423] Optionally, the present application also includes that the feedback resources corresponding to the communication device receiving the first data / data corresponding to the second RNTI are the same or different.

[0424] The fact that the feedback resources corresponding to the communication devices receiving the first data / data corresponding to the second RNTI are the same can be understood as: different communication devices receiving the first data share the same feedback resource.

[0425] The fact that the communication devices receiving the first data / data corresponding to the second RNTI have different corresponding feedback resources can be understood as follows: different communication devices receiving the first data / data corresponding to the second RNTI have different feedback resources.

[0426] Optionally, the first communication device starting or restarting the first timer or the second timer according to the first time includes:

[0427] (1) The first communication device starts or restarts the first timer or the second timer at a first time; or,

[0428] (2) The first communication device starts or restarts the first timer or the second timer at the mth time domain resource after the first time.

[0429] For example, m is a positive integer greater than or equal to 1.

[0430] Based on this solution, the first communication device starts or restarts the first timer or the second timer at a time offset after the first time, taking into account the processing time required for the second communication device to retransmit after receiving feedback from the first communication device, thereby avoiding meaningless monitoring by the first communication device.

[0431] Optionally, when the second timer times out, the first communication device starts or restarts the first timer.

[0432] Optionally, if the first communication device successfully receives the first data and / or fails to receive the first data, the first communication device starts or restarts the first timer.

[0433] Optionally, when the second timer times out and the first communication device successfully receives the first data and / or the first communication device fails to receive the first data, the first communication device starts or restarts the first timer.

[0434] As can be seen from the above introduction, in the existing unicast DRX mechanism, the first timer (retransmission timer) is started only after the RTT timer times out and the first communication device fails to receive data. Therefore, according to the unicast DRX mechanism, different communication devices in the multicast group start or restart the first timer according to different data reception situations, and some do not start or restart the first timer, which will cause the activation times of different communication devices to be misaligned. Based on the scheme provided in the embodiment of the present application, when the second timer times out, regardless of whether the first communication device receives the first data successfully or fails, the first communication device starts or restarts the first timer. Therefore, based on this scheme, after different communication devices start or restart the second timer according to the first time, regardless of the data reception situation of different communication devices, they all start or restart the first timer, so that the activation times of different communication devices can be aligned.

[0435] The actions of the first communication device in steps S601 to S602 can be performed by Figure 4 The processor 401 in the communication device shown calls the application code stored in the memory 402 to instruct the terminal device to execute; the actions of the second communication device in the above steps S601 to S602 can be performed by Figure 4 The processor 401 in the communication device shown calls the application code stored in the memory 402 to instruct the network device to execute. This embodiment does not impose any limitation on this.

[0436] The embodiment of the present application also provides another discontinuous reception control method, such as Figure 11 As shown, the discontinuous reception control method includes the following steps S1101-S1102:

[0437] S1101. A first communication device receives first control information from a second communication device, where the first control information is used to schedule first data, and the first data is multicast data or data transmitted in a multicast manner; or, the first communication device receives first data from a second communication device, where the first data is multicast data or data transmitted in a multicast manner; or, the first communication device receives first control information and first data from a second communication device, where the first control information is used to schedule the first data, and the first data is multicast data or data transmitted in a multicast manner.

[0438] S1102. The first communication device controls the duration of a first timer according to a first time; wherein the first timer is used to indicate the duration for the first communication device to receive the retransmitted data.

[0439] The following describes steps S1101 - S1102 in two scenarios.

[0440] For step S1101 , please refer to the above description of step S601 , which will not be repeated here.

[0441] For step S1102, the first communication device controls the duration of the first timer according to the first time; wherein, the first timer is used to indicate the duration of the first communication device receiving the retransmission data of the first data. According to the above introduction to the DRX mechanism in unicast, it can be seen that the first timer is a retransmission timer, and the first communication device controls the duration of the first timer according to the first time. It can be understood that because all terminal devices in the multicast group share a set of DRX configurations, the remaining communication devices in the multicast group will also control the duration of the first timer according to the first time. Therefore, different communication devices that receive the data corresponding to the first data / second RNTI control the duration of the first timer according to the first time, thereby achieving alignment of the end time of the first timer of different communication devices, that is, alignment of the end time of the retransmission activation time period.

[0442] Step S1102 is described in detail below. In order to control the duration of the first timer according to the first time, the first communication device needs to determine the first time. The solution for the first communication device to determine the first time can refer to the above description of how the first communication device determines the first time in step S602.

[0443] The first communication device controls the duration of the timer according to the first time, including:

[0444] The start or restart time of the first timer or the second timer is earlier than the first time, and the first communication device extends the duration of the first timer by the first duration;

[0445] Alternatively, the start or restart time of the first timer or the second timer is later than the first time, and the first communication device reduces the duration of the first timer by the first duration;

[0446] The second timer is used to indicate the duration before the first communication device receives the retransmission data of the first data.

[0447] Specifically, the first time can be understood as a reference time point. If the start or restart time of the first timer or the second timer is earlier than the first time, the first communication device extends the duration of the first timer by the first duration. If the start or restart time of the first timer or the second timer is later than the first time, the first communication device reduces the duration of the first timer by the first duration. In other words, the first communication device can control the duration of the first timer according to the first time, that is, control the duration of the retransmission activation time period. It can be understood that different communication devices that receive the data corresponding to the first data / second RNTI control the duration of the first timer according to the first time.

[0448] The first duration is the duration between the start or restart time of the first timer or the second timer and the first time. Figure 12, the original duration of the first timer 1 and the first timer 2 is 8 units. The start or restart time of the first timer is 2 units earlier than the first time. The original end time should be 6 units away from the first time. The first communication device extends the duration of the first timer 1 by 2 units. After the extension, the end time of the first timer 1 is 8 units away from the first time. The start or restart time of the first timer 2 is 2 units later than the first time. The original end time should be 10 units (2+8) away from the first time. The first communication device reduces the duration of the first timer 2 by 2 units. After the reduction, the end time of the first timer 2 is 8 units away from the first time, thereby aligning the end time of the first timer 1 and the first timer 2. Based on this solution, the first communication device controls the duration of the first timer according to the time difference between the first time and the start or restart time of the first timer or the second timer, thereby aligning the end time of the first timer.

[0449] In summary, based on the discontinuous reception control method provided in the embodiment of the present application, the first communication device can control the duration of the first timer according to the first time. It can be understood that in the group where the first communication device is located, all communication devices also control the duration of the first timer according to the first time, thereby achieving alignment of the end time of the first timer by controlling the duration of the first timer, and then aligning the activation end time of different communication devices.

[0450] Optionally, the discontinuous reception control method provided in the embodiment of the present application further includes:

[0451] (1) The first communication device sends a first hybrid automatic repeat request HARQ feedback.

[0452] (2) The first communication device starts or restarts the first timer or the second timer; wherein the first HARQ feedback is associated with the first data. The first communication device starts or restarts the first timer or the second timer after the first communication device sends the first HARQ feedback. That is, in this embodiment of the present application, the start or restart time of the first timer or the second timer can be determined according to the existing unicast DRX mechanism.

[0453] It is understood that in the embodiment of the present application, it is only meaningful for the first communication device to control the duration of the first timer based on the first time after the first timer is started or restarted. Therefore, optionally, upon expiration of the second timer, the first timer is started or restarted. For details, please refer to the description of step 602 above.

[0454] The actions of the first communication device in steps S1101 to S1102 can be performed by Figure 4The processor 401 in the communication device shown calls the application code stored in the memory 402 to instruct the terminal device to execute; the actions of the second communication device in the above steps S1101 to S1102 can be performed by Figure 4 The processor 401 in the communication device shown calls the application code stored in the memory 402 to instruct the network device to execute. This embodiment does not impose any limitation on this.

[0455] Optionally, the discontinuous reception control method provided in an embodiment of the present application further includes: the first communication device sends the first HARQ feedback or after sending the first HARQ feedback; the first communication device starts or restarts the first timer or the second timer.

[0456] The first HARQ feedback is associated with the first data.

[0457] In one possible implementation, the time when the first communication device starts or restarts the first timer or the second timer is after the first communication device sends the first HARQ feedback, that is, the start or restart time of the first timer or the second timer in the embodiment of the present application can be determined according to the existing unicast DRX mechanism.

[0458] It is understandable that, in the embodiment of the present application, it is meaningful for the first timer to be started or restarted and for the first communication device to control the duration of the first timer according to the first time.

[0459] Optionally, when the second timer times out, the first timer is started or restarted. Figure 6 The description in the embodiment.

[0460] The actions of the first communication device in steps S1101 to S1102 can be performed by Figure 4 The processor 401 in the communication device shown calls the application code stored in the memory 402 to instruct the terminal device to execute; the actions of the second communication device in the above steps S1101 to S1102 can be performed by Figure 4 The processor 401 in the communication device shown calls the application code stored in the memory 402 to instruct the network device to execute. This embodiment does not impose any limitation on this.

[0461] Furthermore, in order to solve the problem that when the first communication device does not transmit HARQ feedback, the first communication device cannot start the second timer and the first timer, so that the data sent by the second communication device during the original first timer operation period cannot be received, the embodiment of the present application also provides another discontinuous reception control method, such as Figure 12 As shown, the discontinuous reception control method includes the following steps S1301-S1303:

[0462] S1301. A first communication device receives first control information, where the first control information is used to schedule first data; and / or the first communication device receives first data.

[0463] S1302. The first communication device determines not to transmit a first hybrid automatic repeat request HARQ feedback, where the first HARQ feedback is associated with first data.

[0464] S1303: The first communication device starts or restarts the first timer or the second timer according to the first time.

[0465] Conflict can be understood / replaced by: overlap, or conflict in time domain, or overlap in time domain.

[0466] For example, the conflict between the transmission of the first HARQ feedback and the first transmission may include / be understood as: the resources corresponding to the transmission of the first HARQ feedback conflict with the resources corresponding to the first transmission.

[0467] For example, the conflict between the transmission of the first HARQ feedback and the first reception may include / be understood as: the resources corresponding to the transmission of the first HARQ feedback conflict with the resources corresponding to the first reception.

[0468] The first timer (or the duration of the first timer) is used to indicate the duration of time for the first communication device to receive the retransmitted data; the second timer (or the duration of the second timer) is used to indicate the duration before the first communication device receives the retransmitted data. With respect to S1301, in the embodiments of the present application, the transmission method of the first control information or the first data is not limited.

[0469] Optionally, the transmission mode of the first control information may include / be Figure 6 The transmission method of the first control information.

[0470] Optionally, the transmission mode of the first data may include / be Figure 6 The transmission method of the first data.

[0471] Optionally, the first control information may include / be Figure 6 The first control information.

[0472] Optionally, the first data may include / be Figure 6 The first data in.

[0473] Any one or more related contents of the first control information, the first data, the first timer, the second timer, and the first time can be referred to Figure 6 The contents of the embodiments are not repeated here.

[0474] Regarding S1302, the first communication device determines not to transmit the first HARQ feedback, which may also be referred to as the first HARQ feedback being dropped.

[0475] For example, the first HARQ feedback is feedback for the first data.

[0476] Optionally, the first communication device determines not to transmit the first HARQ feedback, which may include: the first communication device determines that the transmission of the first HARQ feedback conflicts with the first transmission; or, the first communication device determines that the transmission of the first HARQ feedback conflicts with the first reception; or, the transmission of the first HARQ feedback conflicts with the first transmission; or, the transmission of the first HARQ feedback conflicts with the first reception.

[0477] In the embodiment of the present application, the transmission of the first HARQ feedback includes the transmission of resources used to transmit the first HARQ feedback, or the transmission of resources used to transmit the first HARQ feedback. Exemplarily, the resources used to transmit the first HARQ feedback may be resources such as PUCCH or PSFCH.

[0478] For example, the first HARQ feedback may include a first UL HARQ feedback and / or a first SL HARQ feedback.

[0479] For example, the resource used to transmit the first UL HARQ feedback may be a PUCCH resource.

[0480] For example, the resource used to transmit the first SL HARQ feedback may be a PSFCH resource.

[0481] Optionally, in an embodiment of the present application, the first transmission includes any one or more of the following: transmission of a second HARQ feedback, first data transmission, and a first sidelink transmission.

[0482] The transmission of the second HARQ feedback is the transmission of resources used to transmit the second HARQ feedback, or the transmission of resources used to transmit the second HARQ feedback. Exemplarily, the resources of the second HARQ feedback may be PUCCH resources, or PSFCH resources.

[0483] For example, the second HARQ feedback may include second UL HARQ feedback and / or second SL HARQ feedback.

[0484] For example, the resource used to transmit the second UL HARQ feedback may be a PUCCH resource.

[0485] For example, the resource used to transmit the second SL HARQ feedback may be a PSFCH resource.

[0486] For example, the first data transmission may include a first uplink data transmission and / or a first SL data transmission.

[0487] For example, the resource used to transmit the first uplink data transmission may be a PUCCH resource or a PUSCH resource.

[0488] For example, the resources used to transmit the first SL data transmission may be PSFCH resources, or PSSCH resources, or PSCCH resources.

[0489] When the first communication device determines that the transmission of the first HARQ feedback conflicts with the first transmission, optionally, the priority corresponding to the transmission of the first HARQ feedback is lower than the priority corresponding to the first transmission. For example, PUCCH1 is used to transmit the first HARQ feedback, and PUCCH2 is the first transmission. If the priority corresponding to PUCCH1 is lower than the priority corresponding to PUCCH2, the first communication device determines that PUCCH1 conflicts with PUCCH2 and determines not to transmit the first HARQ feedback. For specific information on how to determine the priority corresponding to the transmission of the first HARQ feedback and the priority corresponding to the first transmission, reference may be made to the prior art and will not be repeated here.

[0490] Optionally, the first reception includes any one or more of the following: reception of a third HARQ feedback. Exemplarily, the reception of the third HARQ feedback may include reception of a third SL HARQ feedback.

[0491] For example, the resource used to receive the third HARQ feedback may be a PSFCH resource.

[0492] For example, the resource used to transmit the third HARQ feedback may be a PSFCH resource.

[0493] When the first communication device determines that the transmission of the first HARQ feedback conflicts with the first reception, optionally, the priority corresponding to the transmission of the first HARQ feedback is lower than the priority corresponding to the first reception.

[0494] The following is an exemplary description of a case where the first communication device determines not to transmit the first HARQ feedback in combination with different scenarios:

[0495] Scenario 1: Conflict between MBS HARQ feedback and unicast HARQ feedback / unicast PUSCH.

[0496] In this scenario, the transmission of the first HARQ feedback is MBS HARQ transmission, and the first transmission is unicast HARQ feedback or unicast PUSCH.

[0497] For example, specifically, the first data is transmitted via multicast. The first communication device also receives second control information transmitted via unicast, where the second control information is used to schedule the second data to be transmitted via unicast. Alternatively, the first communication device receives the second data transmitted via unicast. Regarding unicast transmission, please refer to the description of step S601 above.

[0498] The first communication device determines that the transmission of the first HARQ feedback conflicts with the first transmission, and the first transmission is associated with the second data. For example, the transmission used by the first communication device to send the first HARQ feedback is PUCCH1, and the first transmission is a transmission of the second HARQ feedback, such as PUCCH2, or the first transmission is a first data transmission, such as PUSCH1, and PUCCH1 and PUCCH2 conflict in the same time slot, and the lower priority PUCCH1 is dropped.

[0499] Scenario 2: Conflict between ultra-reliable and low latency communications (URLLC) HARQ feedback and enhanced mobile broadband (eMBB) HARQ feedback / PUSCH.

[0500] In this scenario, the first HARQ feedback transmission is URLLC HARQ transmission, and the first transmission is eMBB HARQ feedback transmission or PUSCH transmission.

[0501] Specifically, in an embodiment of the present application, the first data includes URLLC data. The first communication device further receives second control information, where the second control information is used to schedule the second data; and / or the first communication device receives the second data; and the second data includes eMBB data.

[0502] The first communication device determines that the transmission of the first HARQ feedback conflicts with the first transmission, and the first transmission is associated with the second data. For example, the transmission used by the first communication device to send the first HARQ feedback is PUCCH1, and the first transmission is a second HARQ feedback transmission, such as PUCCH2 for sending eMBB HARQ feedback, or the first transmission is a first data transmission, such as PUCCH1, and PUCCH1 and PUCCH2 conflict in the same time slot, and the lower-priority PUCCH1 is dropped.

[0503] Scenario 3: Conflict between SL transmission and UL transmission in the V2X scenario.

[0504] In this scenario, the transmission of the first HARQ feedback is SL transmission (eg, SL HARQ feedback), and the first transmission is UL transmission.

[0505] For example, specifically, in embodiments of the present application, the first control information or the first data is received by the first communication device through sidelink (SL).

[0506] The first communication device determines that the transmission of the first HARQ feedback collides with the first reception, and the first transmission is associated with the second data. For example, the transmission of the first HARQ feedback is PSFCH1, and the first transmission is the first data transmission, for example, PUCCH1. The PSFCH1 collides with the PUCCH1 in the same time slot, and the low-priority PSFCH1 is dropped.

[0507] Scenario four, collision between the reception of SL HARQ feedback and the transmission of SL HARQ feedback in a V2X scenario.

[0508] In this scenario, the transmission of the first HARQ feedback is the transmission of the SL HARQ feedback, and the first reception is the reception of the SL HARQ feedback.

[0509] Specifically, in embodiments of the present application, the first communication device can receive the first control information or the first data through SL and send the corresponding first HARQ feedback, and the first communication device sends the second control information or the second data through SL and receives the third HARQ feedback corresponding to the second control information or the second data.

[0510] The first communication device determines that the transmission of the first HARQ feedback collides with the first reception, for example, the transmission of the first HARQ feedback is PSFCH1, and the first reception is PSFCH2. The PSFCH1 collides with the PSFCH2 in the same time slot, and the low-priority PSFCH1 is dropped.

[0511] For step S1303, the first communication device starts or restarts the first timer or the second timer according to the first time. Based on this scheme, after the first communication device determines not to transmit the HARQ feedback, the first communication device starts or restarts the first timer or the second timer according to the first time, so that the data can be received during the starting or restarting of the first timer. According to the existing unicast DRX mechanism, after the first communication device determines not to transmit the HARQ feedback, the first communication device cannot start or restart the first timer or the second timer because no feedback signal is sent. Therefore, this scheme solves the problem that the first communication device cannot accept the subsequent data that may be sent after the first communication device determines not to transmit the HARQ feedback in the existing unicast DRX mechanism.

[0512] In embodiments of the present application, the first communication device needs to determine the first time. Specifically, how the first communication device determines the first time can be referred to the above step S602. Based on this scheme, the activation times of different communication devices can also be aligned.

[0513] After the first time is determined, the first communication device starts or restarts the first timer or the second timer according to the first time, which includes:

[0514] The first communication device starts or restarts the first timer or the second timer at the first time.

[0515] Alternatively, the first communication device starts or restarts the first timer or the second timer at or before or after the mth time domain resource. For details, refer to the description of step S602 above, which will not be repeated here.

[0516] Based on the scheme, the first communication device starts or restarts the first timer or the second timer at a time offset after the first time, which takes into account the processing time required by the second communication device to retransmit after receiving feedback from other communication devices, and avoids meaningless listening by the first communication device.

[0517] Optionally, the embodiments of the present application further include: starting or restarting the first timer when the second timer expires. For details, refer to the description of step S602 above, which will not be repeated here.

[0518] Optionally, the scheme of steps S1301 to S1303 above can also be applied to the NACK only case. For example, for the NACK only case, the feedback resources of different communication devices receiving the same MBS are shared, and if the HARQ feedback of the communication device is dropped, the communication device starts or restarts the first timer or the second timer based on the first time determined in step S1303 above.

[0519] The actions of the first communication device in steps S1301 to S1303 above can be invoked by the processor 401 in the communication device shown in Figure 4 to instruct the terminal device to execute by calling the application program code stored in the memory 402; the actions of the second communication device in steps S1301 to S1303 above can be invoked by the processor 401 in the communication device shown in Figure 4 to instruct the network device to execute by calling the application program code stored in the memory 402. The present embodiment is not limited in this regard.

[0520] It should be understood that, in order to implement the above functions, the first communication device or the second communication device comprises a hardware structure and / or a software module corresponding to each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is implemented in hardware or computer software driven hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0521] The embodiments of the present application can divide the functions of the first communication device or the second communication device according to the above method embodiments, for example, each function module can be divided according to each function, or two or more functions can be integrated into one processing module. The integrated module can be realized in the form of hardware or software function module. It should be noted that the division of the modules in the embodiments of the present application is illustrative, and is only a logical function division. Actual implementation can have another division method.

[0522] Exemplarily, Figure 14 A structural schematic diagram of a communication device 140 is shown. The communication device 140 comprises a processing module 1401 and a transceiver module 1402. The transceiver module 1402, which can also be referred to as a transceiver unit, is used to implement the transceiving function, for example, it can be a transceiving circuit, a transceiver, a transceiver or a communication interface.

[0523] Taking the communication device 140 as the first communication device in the above method embodiments, in one possible implementation, the transceiver module 1402 is configured to receive first control information, the first control information being used to schedule first data, the first data being multicast data or data transmitted in a multicast manner; or the transceiver module 1402 is configured to receive the first data, the first data being multicast data or data transmitted in a multicast manner; or the transceiver module 1402 is configured to receive the first control information and the first data, the first control information being used to schedule the first data, the first data being multicast data or data transmitted in a multicast manner; the processing module 1401 is configured to start or restart a first timer or a second timer according to a first time; wherein the first timer is used to indicate a time length for the transceiver module 1402 to receive retransmitted data; the second timer is used to indicate a time length before the transceiver module 1402 receives retransmitted data.

[0524] Optionally, the first control information is transmitted in a unicast manner, or the first control information is transmitted in a multicast manner.

[0525] Optionally, the first time includes the time domain position of the first feedback resource or before the time domain position of the first feedback resource or after the time domain position of the first feedback resource; or, the first time includes the x-th time domain resource after or before the time domain position of the first feedback resource or before the x-th time domain resource or after the x-th time domain resource; or, the first time includes the time domain position of the first transmission resource or before the time domain position of the first transmission resource or after the time domain position of the first transmission resource; or, the first time includes the y-th time domain resource after or before the time domain position of the first transmission resource or before the y-th time domain resource or after the y-th time domain resource; wherein, the first feedback resource is associated with the first data, and the first transmission resource includes resources for transmitting the first control information or the first data.

[0526] Optionally, the first time includes after or before the second time, and the duration from the second time is the time of the first time interval or the time before or after the time; or, the first time includes after or before the second time, and the duration from the second time is the zth time domain resource after or before the time of the first time interval or before the zth time domain resource or after the zth time domain resource.

[0527] Optionally, the second time includes the time domain position of the first feedback resource or before the time domain position of the first feedback resource or after the time domain position of the first feedback resource, or the second time includes the x-th time domain resource after or before the time domain position of the first feedback resource or before the x-th time domain resource or after the x-th time domain resource; wherein, the first feedback resource is associated with the first data.

[0528] Optionally, the second time includes the time domain position of the first transmission resource or before the time domain position of the first transmission resource or after the time domain position of the first transmission resource, or the second time includes the yth time domain resource after or before the time domain position of the first transmission resource or before the yth time domain resource or after the yth time domain resource; wherein, the first transmission resource includes a resource for transmitting the first control information or the first data.

[0529] Optionally, the processing module 1401 is further used to obtain indication information, where the indication information includes information of the first time; the processing module 1401 is further used to determine the first time according to the indication information.

[0530] Optionally, the first time includes the w-th time domain resource before or after the time domain position of the first feedback resource, or before the w-th time domain resource or after the w-th time domain resource; wherein the first feedback resource is associated with the first data.

[0531] Optionally, the processing module 1401 is used to start or restart the first timer or the second timer according to the first time, including: the processing module 1401 is used to start or restart the first timer or the second timer at the first time; or, the processing module 1401 is used to start or restart the first timer or the second timer at the mth time domain resource after or before the first time, or before the mth time domain resource, or after the mth time domain resource.

[0532] Optionally, when the second timer times out, the first timer is started or restarted.

[0533] Taking the communication device 140 as the first communication device in the above method embodiment as an example, in one possible implementation method, the transceiver module 1402 is used to receive first control information, and the first control information is used to schedule first data; and / or, the transceiver module 1402 is used to receive first data; the processing module 1401 is used to determine not to transmit the first hybrid automatic repeat request HARQ feedback, and the first HARQ feedback is associated with the first data; the processing module 1401 is used to start or restart the first timer or the second timer according to the first time; wherein the first timer is used to indicate the duration of time for the first communication device to receive the retransmitted data; the second timer is used to indicate the duration before the first communication device receives the retransmitted data.

[0534] Optionally, the transmission of the first HARQ feedback conflicts with the first transmission; or the transmission of the first HARQ feedback conflicts with the first reception.

[0535] Optionally, the priority corresponding to the transmission of the first HARQ feedback is lower than the priority corresponding to the first transmission; or, the priority corresponding to the transmission of the first HARQ feedback is lower than the priority corresponding to the first reception.

[0536] Optionally, the first transmission includes any one or more of the following: transmission of a second HARQ feedback, a first data transmission, and a first sidelink transmission.

[0537] Optionally, the first reception includes any one or more of the following: reception of third HARQ feedback.

[0538] In this embodiment, the communication device 140 is presented in the form of various functional modules divided in an integrated manner. The "module" here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and / or other devices that can provide the above functions.

[0539] In a simple embodiment, those skilled in the art will appreciate that the communication device 140 may be implemented as Figure 4 The form of the communication device 400 is shown.

[0540] for example, Figure 4The processor 401 or 407 in the communication device 400 shown can call the computer-executable instructions stored in the memory 403 to enable the communication device 400 to perform the data analysis method in the above method embodiment. Specifically, Figure 14 The function / implementation process of the processing module 1401 can be achieved by Figure 4 The processor 401 or 407 in the communication device 400 is implemented by calling the computer execution instructions stored in the memory 403 .

[0541] Since the communication device 140 provided in this embodiment can execute the above-mentioned data transmission method, the technical effects that can be obtained can refer to the above-mentioned method embodiments and will not be repeated here.

[0542] It should be noted that one or more of the above modules or units can be implemented by software, hardware, or a combination of the two. When any of the above modules or units is implemented by software, the software exists in the form of computer program instructions and is stored in a memory, and a processor can be used to execute the program instructions and implement the above method flow. The processor can be built into an SoC (system on chip) or an ASIC, or it can be an independent semiconductor chip. In addition to the core used to execute software instructions to perform calculations or processing within the processor, it can further include necessary hardware accelerators, such as a field programmable gate array (FPGA), a PLD (programmable logic device), or a logic circuit that implements dedicated logic operations.

[0543] When the above modules or units are implemented in hardware, the hardware can be any one or any combination of a CPU, a microprocessor, a digital signal processing (DSP) chip, a microcontroller unit (MCU), an artificial intelligence processor, an ASIC, a SoC, an FPGA, a PLD, a dedicated digital circuit, a hardware accelerator or a non-integrated discrete device, which can run the necessary software or not rely on the software to execute the above method flow.

[0544] Optionally, an embodiment of the present application further provides a chip system, comprising: at least one processor and an interface, wherein the at least one processor is coupled to a memory via the interface, and when the at least one processor executes a computer program or instruction in the memory, the method in any of the above method embodiments is executed. In one possible implementation, the communication device also includes a memory. Optionally, the chip system can be composed of a chip, or can include a chip and other discrete devices, which is not specifically limited in the embodiment of the present application.

[0545] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented using a software program, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0546] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and implement other changes to the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple situations. A single processor or other unit can implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0547] Although the present application has been described with reference to specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely illustrative of the present application as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, the present application is intended to include such modifications and variations as fall within the scope of the claims of the present application and their equivalents.

[0548] 2.3.3.1 Technical Solution of Invention Solution Example 1

[0549] The problem to be solved in this embodiment is how the network can correctly determine the bandwidth of the terminal's fallback BC so that the network does not need to reconfigure the fallback, thereby minimizing capability signaling overhead and preventing the network from configuring a fallback BC bandwidth that the terminal does not support, which may cause terminal communication failure, or preventing the network from being unable to configure an appropriate bandwidth for the terminal, which may cause excessive terminal power consumption or affect the network's peak rate.

[0550] The main invention points of this embodiment are summarized as follows:

[0551] If the carrier bandwidth corresponding to the first frequency band of the first fallback frequency band combination of the first frequency band combination for the Nth bandwidth combination set does not completely include the carrier bandwidth corresponding to the first frequency band of the first frequency band combination for the Nth bandwidth combination set, the terminal device reports the first fallback frequency band combination to the network device.

[0552] The terminal device determines an Mth bandwidth combination set of the first fallback frequency band combination, and reports the Mth bandwidth combination set to the network device, where the carrier bandwidth corresponding to the first frequency band of the first fallback frequency band combination for the Mth bandwidth combination set includes the carrier bandwidth corresponding to the first frequency band of the first frequency band combination for the Nth bandwidth combination set.

[0553] The terminal device sends first indication information to the network device, where the first indication information is used to indicate a method for determining a carrier bandwidth of a fallback frequency band combination of a first frequency band combination. The above determination method includes: determining according to a bandwidth combination set of the first frequency band combination, or determining according to the carrier bandwidth of the first frequency band combination.

[0554] The determining according to the bandwidth combination set of the first frequency band combination includes: the carrier bandwidth of the fallback frequency band combination is the carrier bandwidth corresponding to the P-th bandwidth combination set, and the P-th bandwidth combination set is a bandwidth combination set supported by the first frequency band combination;

[0555] The determining according to the carrier bandwidth of the first frequency band combination includes: the carrier bandwidth of the fallback frequency band combination is a carrier bandwidth corresponding to a bandwidth combination set supported by the first frequency band combination.

[0556] A terminal device receives second indication information sent by a network device, where the second indication information is used to indicate a method for determining a carrier bandwidth of a fallback frequency band combination of a first frequency band combination. The terminal device determines the carrier bandwidth of the fallback frequency band combination of the first frequency band combination according to the determination method indicated by the second indication information. The above-mentioned determination method includes: determining according to a bandwidth combination set of the first frequency band combination, or determining according to the carrier bandwidth of the first frequency band combination.

[0557] The determining according to the bandwidth combination set of the first frequency band combination comprises: the carrier bandwidth of the fallback frequency band combination is the carrier bandwidth corresponding to the Pth bandwidth combination set, and the Pth bandwidth combination set is a bandwidth combination set supported by the first frequency band combination.

[0558] The determining according to the carrier bandwidth of the first frequency band combination comprises: the carrier bandwidth of the fallback frequency band combination is the carrier bandwidth corresponding to the bandwidth combination set supported by the first frequency band combination.

[0559] The Nth bandwidth combination set, the Mth bandwidth combination set and the Pth bandwidth combination set in the application can refer to one or more bandwidth combination sets.

[0560] Generally, the main points of the application are as follows:

[0561] 1) For a given frequency band combination (BC), if the fallback BC for the same bandwidth combination set (BCS) cannot completely contain (less than or partially contain) the carrier bandwidth supported by the super BC on the frequency band on the BCS, the terminal determines the BCS of the fallback BC according to the carrier bandwidth supported by the super BC, the carrier bandwidth corresponding to the fallback BC on the BCS is not less than (the same as or more than) the carrier bandwidth of the super BC, and the UE displays and reports the fallback BC.

[0562] 2) When the terminal does not display and report the fallback BC, the network determines the bandwidth supported by the fallback BC according to the BCS of the super BC; if the UE displays and reports the fallback BC, the network determines the carrier bandwidth supported by the fallback BC according to the BCS of the displayed and reported fallback BC.

[0563] 3) The UE sends indication information to the network to indicate the carrier bandwidth determination mode of the fallback BC. The determination mode comprises: 1) determining the carrier bandwidth supported by the fallback BC on the BCS according to the BCS of the super BC, and the fallback BC supports the same BCS as the super BC; 2) determining the carrier bandwidth supported by the fallback BC according to the carrier bandwidth (the bandwidth determined according to the BCS of the super BC) of the super BC, and the fallback BC supports the same carrier bandwidth as the super BC.

[0564] Enhanced Mobile Broadband (eMBB) is a key 5G application scenario. Typical applications include 2k / 4k video and VR / AR. These applications require ultra-high transmission data rates: uplink peak rates of 10Gbit / s and downlink peak rates of 20Gbit / s. Peak rates are closely related to the bandwidth available to users. To increase peak rates and meet the requirements of eMBB scenarios, the only option is to increase cell bandwidth. If the bandwidth of a single cell is fixed, it is possible to consider aggregating the bandwidth of multiple cells. This is the carrier aggregation (CA) technology. By aggregating multiple component carriers (CCs) in CA, the peak rate can be increased almost proportionally.

[0565] In carrier aggregation, one carrier is called the primary carrier (PCC), and the cell corresponding to the PCC is called the primary cell (PCell). The UE manages the carrier through radio resource control (RRC) signaling on the primary carrier. Other carriers are called secondary carriers (SCC), and the cells corresponding to the SCCs are called secondary cells (SCell).

[0566] In addition, carrier aggregation is also supported under the dual connectivity (DC) architecture. In DC, the UE is connected to the cells of two base stations simultaneously (the base stations here refer to logical base stations). The primary base station is the MN (Master Node) and the secondary base station is the SN (Secondary Node). Both the MN and SN can independently perform carrier aggregation. The cell that the MN forms a CA is called the Master Cell Group (MCG), and the cell that the SN forms a CA is called the Secondary Cell Group (SCG). The PCC in the SCG is called the PSCell.

[0567] The network's CA capabilities, or CA specifications, include the maximum number of carriers that can be aggregated, the maximum aggregated bandwidth, and which CCs can be aggregated. These specifications are clearly defined in the protocol and must meet frequency band and bandwidth requirements, which are also related to the CA type.

[0568] There are three types of CAs:

[0569] 1) Intra-band continuous carrier aggregation: CCs belong to the same frequency band and are continuous in the frequency domain

[0570] 2) Intra-band non-contiguous carrier aggregation: CCs belong to the same frequency band but are not contiguous in the frequency domain

[0571] 3) Inter-band carrier aggregation: CCs belong to different frequency bands (because they belong to different frequency bands, multiple CCs are basically discontinuous in the frequency domain)

[0572] The three different types of CA mentioned above have different requirements for frequency band and bandwidth combinations. For details, please refer to the relevant sections of 3GPP TS38.101.

[0573] CA specifications describe the CA capabilities of a base station from its perspective. Since CA implementation is closely related to the capabilities of the user equipment (UE), the CA capabilities a UE can actually achieve are determined by both the UE itself and the capabilities of the base station it connects to. A UE's CA capabilities primarily refer to the capabilities related to the frequency band combinations (BCs) that the UE can support.

[0574] In the initial registration process, after the base station queries the UE's wireless capabilities through the UE Capability Enquiry signaling, the UE reports the UE's wireless capabilities to the base station through the UE Capability Information signaling. The UE reports the supported band combination list (supportedBandCombinationList) in the RF-Parameters element of the UECapabilityInformation, which contains the BCs supported by the UE. For each BC, the UE reports the relevant information of the frequency bands that make up the BC, including the frequency band number, the bandwidth class (bandwidthClass) of the frequency band, etc. The bandwidth class (A, B, C, D, E...) of the frequency band indicates the maximum number of consecutive aggregated carriers of this frequency band, the range of aggregated channel bandwidth, and the fallback group, etc., see 3GPP TS 38.101-1.

[0575] For each BC, the bandwidth combination set (BCS) supported by that BC is also reported. The BCS is an identifier (for ease of understanding, this identifier will be referred to as the BCS ID, or simply BCS) that identifies the different bandwidth combinations of that BC. As the bandwidth combinations supported by the protocol evolve, this identifier has been added to facilitate identification of UE capabilities. If the BCS reported by the UE is 0, it means that it supports the bandwidth combination corresponding to BCS 0 in that BC.

[0576] Taking CA_n78C as an example, CA_n78C represents a CA combination with bandwidth level C on NR band n78, which supports downlink and uplink CA. For BCS 0, the two contiguous carriers in band n78 can be aggregations of carriers with bandwidths of {50} MHz and {60, 80, 100} MHz, or {60} MHz and {60, 80, 100} MHz, or {80} MHz and {80, 100} MHz, or {100} MHz and {100} MHz.

[0577] CA_n3A-n78A represents an inter-band Carrier Access Control (CA) combination between a single carrier with bandwidth class A on NR band n3 and a single carrier with bandwidth class A on NR band n78. In the CA configuration for this CA combination, BCS0 corresponds to the bandwidth supported for each band at different subcarrier spacings (SCSs). Under BCS 0, for band n3, the supported bandwidths are {5, 10, 15, 20, 25, 30} MHz with a 15 kHz SCS and {10, 15, 20, 25, 30} MHz with 30 kHz and 60 kHz SCSs. For band n78, the supported bandwidths are {10, 15, 20, 40, 50} MHz with a 15 kHz SCS and {10, 15, 20, 40, 50, 60, 80, 90, 100} MHz with 30 kHz and 60 kHz SCSs.

[0578] In the UE capabilities, for each BC, the UE reports the BCS supported by the UE using a 32-bit bit string. The first / leftmost bit of the bit string represents BCS 0, the second bit represents BCS 1, and so on. The rightmost / last bit represents BCS 31. A bit position of 1 indicates that the UE supports the corresponding BCS, while a bit position of 0 indicates that the UE does not support the corresponding BCS.

[0579] However, with the development of communications, the protocol specifies more and more CA combinations, and the number of BCs reported in the UE capabilities is also increasing. In order to save the signaling overhead of BC reporting, a fallback BC mechanism is introduced. A fallback BC refers to the BC obtained from a BC due to the release of at least one SCell or the uplink configuration of the SCell, or SCG. This BC is called a fallback BC, and the original BC is referred to as a super BC in this invention. For a given BC, the UE should support all its fallback BCs. When the fallback BCs have the same capabilities, the UE does not need to explicitly report the fallback BC in the UE capabilities, thus greatly saving signaling overhead.

[0580] After releasing an SCell or the uplink configuration of an SCell or an SCG, if the obtained fallback BC has the same capabilities as the BC before release (hereinafter referred to as super BC), the UE does not need to explicitly report the capabilities of this fallback BC, and the network can infer the capabilities of the fallback BC based on the capabilities of the super BC. However, if the capabilities of the obtained fallback BC change, the UE needs to explicitly report the fallback BC with additional capabilities.

[0581] However, according to TS 38.101, different BCs support different bandwidths in the same frequency band under the same BCS. For example, under BCS 0, the super BC (CA_n3A-n78C) and its fallback BC (CA_n3A-n78A) support different carrier bandwidths in the n78 frequency band.

[0582] For BC n3A-n78C, the carrier bandwidth corresponding to BCS 0 for n78 is {50, 60, 80, 100} MHz (for 30kHz / 60kHz SCS);

[0583] For BC n3A-n78A, the carrier bandwidth corresponding to BCS 0 for n78 is

[0584] {10,15,20,40,50,60,80,90,100}MHz (for 30kHz / 60kHz SCS)

[0585] When the capabilities of the fallback BC are the same as those of the super BC, the network does not need to reconfigure the UE. In this case, the bandwidth supported by the UE on the frequency band of the fallback BC should be no less than the bandwidth supported by the super BC on the frequency band.

[0586] However, as mentioned above, since the carrier bandwidths supported by the super BC and fallback BC in the same frequency band under the same BCS may be the same, different, or not completely the same, the carrier bandwidth supported by the fallback BC in a certain frequency band may include, exclude, or partially include the carrier bandwidth supported by the super BC in that frequency band. Therefore, when the fallback BC defines the same BCS as the super BC, the network and terminal have two possible ways to determine the bandwidth of the fallback BC that is not reported in the report based on the BCS:

[0587] 1) The fallback BC supports the same BCS as the super BC. The carrier bandwidth supported by the fallback BC under this BCS is determined based on the BCS.

[0588] 2) The fallback BC supports the same carrier bandwidth as the super BC. The carrier bandwidth supported by the fallback BC is determined based on the bandwidth supported by the super BC under the BCS of the super BC.

[0589] Therefore, the fallback BC bandwidth determined by BCS has the following possible scenarios:

[0590] Case 1: Under the same BCS, the carrier bandwidth supported by the fallback BC and the carrier bandwidth supported by the super BC on the same frequency band are the same;

[0591] The carrier bandwidth supported by the Fallback BC determined by the UE and the network is consistent, regardless of whether determination method 1 or determination method 2 is adopted.

[0592] Case 2: Under the same BCS, the carrier bandwidth supported by the fallback BC on the same frequency band is greater than the carrier bandwidth supported by the super BC;

[0593] Consider the previous example. When BC n3A-n78A is the fallback BC for BC n3A-n78C, the carrier bandwidth supported by n78 in BC n3A-n78A includes and exceeds the carrier bandwidth supported by n78 in BC n3A-n78C. Therefore, under the two determination methods above, the carrier bandwidth supported by the n78 band in BC n3A-n78A is:

[0594] Based on method 1: {10,15,20,40,50,60,80,90,100}MHz

[0595] Based on method 2: {50, 60, 80, 100} MHz

[0596] Therefore, if the network and UE do not agree on the carrier bandwidth supported by the fallback BC, compatibility issues will arise. If the network uses method 1 but the UE uses method 2, the network will configure a bandwidth that the UE does not support, resulting in communication interruption. If the network uses method 2 but the UE uses method 1, the network will not know the carrier bandwidth supported by certain fallback BCs, resulting in insufficient bandwidth configuration. If the network cannot configure certain bandwidth values, the peak rate of the network will be affected. If the network cannot configure certain smaller bandwidth values, the UE will consume too much energy.

[0597] Case 3: Under the same BCS, the carrier bandwidth supported by the fallback BC on the same frequency band is less than or partially includes the carrier bandwidth supported by the super BC;

[0598] If the network adopts determination method 1, since the bandwidth of the fallback BC does not completely include the super BC, the network needs to reconfigure the UE according to the carrier bandwidth supported by the fallback BC, which will increase service latency, reduce service quality, and affect user experience.

[0599] Therefore, the present invention proposes a method for determining the carrier bandwidth of the fallback BC, so that the network and the UE can maintain consistency with the determined fallback BC bandwidth, avoiding the network from reconfiguring the fallback BC. The present invention can not only ensure that the capability signaling overhead is minimized, but also ensure that the network configuration does not support the fallback BC carrier bandwidth, resulting in terminal communication failure, or avoid the network from being unable to configure a suitable carrier bandwidth for the terminal, resulting in excessive terminal power consumption or affecting the peak rate of the network.

[0600] Method 1:

[0601] For the terminal, if the fallback BC supports the same BCS as the super BC (support here means that the BCS is defined for the fallback BC and the fallback BC also supports it), and if, for the same BCS, the carrier bandwidth supported by the fallback BC on a given frequency band is not less than the carrier bandwidth supported by the super BC on that frequency band, the terminal determines the carrier bandwidth supported by the fallback BC based on the BCS, where the BCS is the BCS supported by the super BC; in other words, the terminal determines the carrier bandwidth supported by the fallback BC based on the BCS of the super BC. The terminal can determine the carrier bandwidth supported by the fallback BC on each frequency band when performing CA based on the carrier bandwidth supported by the fallback BC. If the fallback BC supports the same other capabilities and feature sets as the super BC, the terminal does not need to explicitly report the fallback BC.

[0602] If fallback BC supports the same BCS as super BC (here the meaning of support is that the BCS is defined for fallback BC and fallback BC also supports the BCS), and if for the same BCS as super BC, the carrier bandwidth supported by fallback BC in the given frequency band on the BCS cannot completely contain (less than or partially contain) the carrier bandwidth supported by super BC in the frequency band, then UE displays and reports the above fallback BC. UE determines the BCS of the reported fallback BC according to the carrier bandwidth supported by super BC (the bandwidth determined according to the BCS of super BC), and the determination is that the corresponding carrier bandwidth of fallback BC in the determined BCS is not less than (the same as or more than) the carrier bandwidth of super BC.

[0603] For the network, if the terminal does not display and report the fallback BC, the network determines the bandwidth supported by the fallback BC according to the BCS, which is the BCS supported by super BC; or in other words, the network determines the bandwidth supported by fallback BC in the BCS according to the BCS of super BC.

[0604] If UE displays and reports the fallback BC, then the network determines the carrier bandwidth supported by fallback BC according to the BCS of the displayed and reported fallback BC.

[0605] The advantage of the method is that in most cases, for the same BCS, the bandwidth supported by UE in the frequency band of fallback BC is not less than the bandwidth supported by super BC in the frequency band, so in this case UE does not need to display and report fallback BC, and the network can determine the carrier bandwidth of fallback BC according to the BCS of super BC according to the CA configuration table in TS 38.101. Under this method, signaling overhead can be saved. At the same time, if for the same BCS, the bandwidth supported by UE in the frequency band of fallback BC is more than the bandwidth supported by super BC in the frequency band, then the network can also know the additional bandwidth supported by fallback BC other than the bandwidth supported by super BC in the frequency band, and can correctly understand the UE capability and make appropriate CA configuration, effectively improving the network peak rate in the corresponding scenario, or ensuring UE energy consumption.

[0606] At the same time, if the bandwidth corresponding to the fallback BC under the same BCS is less than or only partially includes the bandwidth corresponding to the super BC under the BCS, the UE can report the fallback BC and determine the BCS of the reported fallback BC through this method, so that the network can correctly understand the UE's ability to support the carrier bandwidth on the fallback BC, avoiding the network from reconfiguring the UE.

[0607] Method 2:

[0608] The UE sends an indication to the network, indicating the carrier bandwidth determination method for the fallback BC, or the carrier bandwidth capability supported by the UE on the fallback BC. The above determination methods include:

[0609] 1) Determine the carrier bandwidth supported by the fallback BC based on the BCS of the super BC. This means that the carrier bandwidth supported by the fallback BC is determined based on the BCS, and the BCS is the same as the super BC's BCS; or, alternatively, the fallback BC supports the same BCS as the super BC.

[0610] 2) The carrier bandwidth supported by the fallback BC is determined based on the carrier bandwidth of the super BC (the carrier bandwidth here is the bandwidth determined by the BCS of the super BC). This means that the fallback BC supports the same carrier bandwidth as the super BC.

[0611] Optionally, the above indication information is a 1-bit indication.

[0612] Optionally, the above indication information is reported in the UE capability, and the network determines the carrier bandwidth determination method of the fallback BC according to the indication information.

[0613] Optionally, the above indication information is reported for each BC, and the network determines the carrier bandwidth determination method of the Fallback BC of the BC according to the indication information.

[0614] One implementation method is that the UE uses 1-bit information to indicate the bandwidth determination method of the fallback BC of the BC. When a BC has multiple fallback BCs, the UE determines the carrier bandwidth determination method of which fallback BC to indicate to the network. An optional determination method is that the UE traverses all fallback BCs of the BC. For the same BCS, the number of fallback BCs whose carrier bandwidth supported by the fallback BC is less than the carrier bandwidth supported by the super BC is A. For the same BCS, the number of fallback BCs whose carrier bandwidth supported by the fallback BC is greater than the carrier bandwidth supported by the super BC is B. When A is less than (or equal to) B, the UE indicates to the network that it is determination method 1. When A is greater than (or equal to) B, the UE indicates to the network that it is determination method 2.

[0615] Another optional determination method is that the UE traverses all fallback BCs of the BC. Under the bandwidth determination method 1 of the fallback BC, the UE needs to display the reported number of fallback BCs. When the number is less than or equal to the number of fallback BCs reported under the bandwidth determination method 2 of the fallback BC, the UE needs to display the reported number of fallback BCs. The UE indicates to the network that it is determination method 1. Otherwise, under the bandwidth determination method 1 of the fallback BC, the UE needs to display the reported number of fallback BCs. When the number is greater than or equal to the number of fallback BCs reported under the bandwidth determination method 2 of the fallback BC, the UE indicates to the network that it is determination method 2.

[0616] In the two methods for determining the fallback BC bandwidth described above, the UE needs to explicitly report the fallback BC bandwidth under the following conditions:

[0617] In determination method 1, the fallback BCs that need to be displayed and reported include those that meet at least one of the following conditions:

[0618] 1) If the fallback BC defines and supports the same BCS as the super BC, and the carrier bandwidth supported by the fallback BC on the BCS in a given frequency band cannot completely include (is less than or partially includes) the carrier bandwidth supported by the super BC on the frequency band; or

[0619] 2) The fallback BC does not support the same BCS as the super BC, that is, the BCS supported by the fallback BC is more or less than the BCS of the super BC. Here, the situation where the fallback BC supports more BCS than the super BC means that the UE's capabilities support more BCS of the fallback BC than the super BC. The situation where the fallback BC supports less BCS than the super BC includes both the situation where the UE's capabilities support less BCS of the fallback BC and the situation where the BCS defined for the fallback BC is less than that of the super BC, that is, the fallback BC does not define the BCS of one or more super BCs.

[0620] In determination method 2, the fallback BCs that need to be displayed and reported include those that meet at least one of the following conditions:

[0621] 1) Under the same BCS as the super BC, the carrier bandwidth supported by the fallback BC is greater than the carrier bandwidth supported by the super BC;

[0622] In the above implementation, the indication information is reported for each BC, and the network determines the carrier bandwidth determination method of the Fallback BC of the BC based on the indication information. In another implementation, the UE uses a bitmap to indicate the bandwidth determination method of all possible fallback BCs for the BC. The length of the bitmap is the maximum number of possible fallback BCs.

[0623] This method combines the advantages of two fallback BC bandwidth determination methods, minimizing signaling overhead. The UE can indicate to the network which bandwidth determination method to use based on the bandwidth of multiple fallback BCs under the same BCS—that is, whether a given frequency band supports more or less bandwidth compared to a super BC under the same BCS. This allows for flexible interpretation of the fallback BC bandwidth, minimizing the number of fallback BCs that require additional display and reporting, and thus reducing signaling overhead.

[0624] Method 3: For a given BC, the UE indicates the BCS of each fallback BC of the BC to the network. The network determines the bandwidth of the fallback BC based on the BCS of the fallback BC indicated by the UE.

[0625] The advantage of this method is that the BCS of each fallback BC can be clearly indicated to the network. If the fallback BC has the same other capabilities as the super BC, the UE does not need to explicitly report the fallback BC. The network can determine the carrier bandwidth corresponding to the fallback BC based on the BCS of the fallback BC reported in the super BC.

[0626] 2.3.3.2 Technical Effects of Embodiment 1 of the Invention

[0627] This solution ensures that the carrier bandwidth supported by the fallback BC determined by the BCS in the BC dimension of the terminal and the network is consistent, avoiding the network from reconfiguring the fallback BC; and ensures that the network can correctly configure the carrier bandwidth of the fallback BC according to the UE's capabilities, avoiding the situation where the network configures a carrier bandwidth of the fallback BC that exceeds the UE's capabilities, or avoids the situation where the network cannot know the carrier bandwidth of the fallback BC supported by the UE's capabilities, resulting in insufficient configured bandwidth and inability to configure a specific bandwidth value, resulting in damage to the network peak rate or excessive UE energy consumption.

[0628] 2.3.3.3 Improvements of the First Embodiment of the Invention Solution Compared with the Prior Art

[0629] The improvement of this embodiment compared with the prior art is that:

[0630] If, for the same BCS as the super BC, the carrier bandwidth supported by the fallback BC on the BCS in a given frequency band cannot completely include (less than or partially include) the carrier bandwidth supported by the super BC on the frequency band, the terminal reports the fallback BC, and the terminal determines the BCS of the reported fallback BC based on the carrier bandwidth supported by the super BC. The carrier bandwidth corresponding to the fallback BC under the above BCS is not less than (the same as or greater than) the carrier bandwidth of the super BC.

[0631] The UE sends an indication to the network, indicating the method for determining the carrier bandwidth of the fallback BC. The above determination methods include: 1. Determining the carrier bandwidth supported by the fallback BC under the BCS of the super BC based on the BCS of the super BC, where the fallback BC supports the same BCS as the super BC; 2. Determining the carrier bandwidth supported by the fallback BC based on the carrier bandwidth of the super BC (the bandwidth determined based on the BCS of the super BC), where the fallback BC supports the same carrier bandwidth as the super BC.

Claims

1. A discontinuous reception control method, characterized in that: The method comprises: receiving first control information, where the first control information is used to schedule first data, where the first data is multicast data; Starting or restarting a second timer in the first time slot; The first time slot is the first time slot after the first feedback resource; the first feedback resource is the last feedback resource in the time domain among the feedback resources associated with the first data; the second timer is used to indicate the duration before receiving the retransmitted data; The number of communication devices receiving the first data or the number of communication devices in the group is less than the number of feedback resources associated with the first data.

2. The method according to claim 1, characterized in that Different communication devices receiving the first data correspond to different feedback resources.

3. The method according to claim 2, characterized in that The time domain positions of the feedback resources corresponding to different communication devices receiving the first data are different.

4. The method according to any one of claims 1 to 3, characterized in that When the second timer times out, the first timer is started or restarted, wherein the first timer is a retransmission timer.

5. The method according to any one of claims 1 to 3, characterized in that The first control information is first sidelink control information SCI.

6. The method according to any one of claims 1 to 3, characterized in that The first feedback resource is a physical sidelink feedback channel PSFCH resource.

7. The method according to any one of claims 1 to 3, characterized in that The second timer is a round trip time (RTT) timer.

8. A first communication device, characterized in that: The first communication device includes: a transceiver module and a processing module; The transceiver module is configured to receive first control information, where the first control information is used to schedule first data, where the first data is multicast data; The processing module is configured to start or restart the second timer in the first time slot; The first time slot is the first time slot after the first feedback resource; the first feedback resource is the last feedback resource in the time domain among the feedback resources associated with the first data; the second timer is used to indicate the duration before the transceiver module receives the retransmitted data; The number of communication devices receiving the first data or the number of communication devices in the group is less than the number of feedback resources associated with the first data.

9. The communication device according to claim 8, wherein: Different communication devices receiving the first data correspond to different feedback resources.

10. The communication device according to claim 9, wherein: The time domain positions of the feedback resources corresponding to different communication devices receiving the first data are different.

11. The communication device according to any one of claims 8 to 10, characterized in that: When the second timer times out, the first timer is started or restarted, wherein the first timer is a retransmission timer.

12. The communication device according to any one of claims 8 to 10, characterized in that: The first control information is first sidelink control information SCI.

13. The communication device according to any one of claims 8 to 10, characterized in that: The first feedback resource is a physical sidelink feedback channel PSFCH resource.

14. The communication device according to any one of claims 8 to 10, characterized in that: The second timer is a round trip time (RTT) timer.

15. A discontinuous reception control method, characterized in that: The method comprises: Sending first control information, where the first control information is used to schedule first data, where the first data is multicast data; The communication device receiving the first data is configured to start or restart a second timer in a first time slot, where the first time slot is the first time slot after the first feedback resource; the first feedback resource is the last feedback resource in the time domain among the feedback resources associated with the first data; and the second timer is configured to indicate a duration before receiving retransmitted data. The number of communication devices receiving the first data or the number of communication devices in the group is less than the number of feedback resources associated with the first data.

16. The method according to claim 15, characterized in that Different communication devices receiving the first data correspond to different feedback resources.

17. The method according to claim 16, characterized in that The time domain positions of the feedback resources corresponding to different communication devices receiving the first data are different.

18. The method according to any one of claims 15 to 17, characterized in that: The communication device receiving the first data is further configured to: when the second timer times out, start or restart a first timer, wherein the first timer is a retransmission timer.

19. The method according to any one of claims 15 to 17, characterized in that: The first control information is first sidelink control information SCI.

20. The method according to any one of claims 15 to 17, characterized in that: The first feedback resource is a physical sidelink feedback channel PSFCH resource.

21. The method according to any one of claims 15 to 17, characterized in that: The second timer is a round trip time (RTT) timer.

22. A second communication device, characterized in that: The second communication device includes: a transceiver module; The transceiver module is configured to send first control information, where the first control information is used to schedule first data, where the first data is multicast data; The communication device receiving the first data is configured to start or restart a second timer in a first time slot, where the first time slot is the first time slot after the first feedback resource; the first feedback resource is the last feedback resource in the time domain among the feedback resources associated with the first data; and the second timer is configured to indicate a duration before receiving retransmitted data. The number of communication devices receiving the first data or the number of communication devices in the group is less than the number of feedback resources associated with the first data.

23. The communication device according to claim 22, wherein: Different communication devices receiving the first data correspond to different feedback resources.

24. The communication device according to claim 23, wherein: The time domain positions of the feedback resources corresponding to different communication devices receiving the first data are different.

25. The communication device according to any one of claims 22 to 24, characterized in that: The communication device receiving the first data is further configured to: when the second timer times out, start or restart a first timer, wherein the first timer is a retransmission timer.

26. The communication device according to any one of claims 22 to 24, characterized in that: The first control information is first sidelink control information SCI.

27. The communication device according to any one of claims 22 to 24, characterized in that: The first feedback resource is a physical sidelink feedback channel PSFCH resource.

28. The communication device according to any one of claims 22 to 24, characterized in that: The second timer is a round trip time (RTT) timer.

29. A computer-readable storage medium, characterized in that The computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute the method according to any one of claims 1 to 7 or any one of claims 15 to 21.

30. A chip comprising a processor, characterized in that: The processor is configured to execute the method according to any one of claims 1 to 7 or any one of claims 15 to 21 according to instructions in the memory.

31. A computer program product comprising instructions, characterized in that: When the instructions are executed on a computer, the computer is enabled to implement the method according to any one of claims 1 to 7 or any one of claims 15 to 21.

Images