CN115134895A

CN115134895A - Wake-up indication method in dual DRX mode and related device

Info

Publication number: CN115134895A
Application number: CN202110432825.0A
Authority: CN
Inventors: 黄伟; 李雪茹
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-03-22
Filing date: 2021-04-21
Publication date: 2022-09-30
Also published as: WO2022199489A1

Abstract

The embodiment of the application discloses a wake-up indication method in a dual DRX mode and a related device, wherein the method comprises the following steps: the first-order SCI is sent by the first equipment, and then the second-order SCI is sent within a preset time window; the first-order SCI indicates that the second-order SCI format is a new SCI format, such as SCI format 2-C/2-D, the second-order SCI of the new SCI format including a wakeup indication bit; the wake indicator bit is used to indicate whether the second device is awake within the duration timer of the DRX cycle for communication traffic and awake within the duration timer of the DRX cycle for location traffic. By adopting the embodiment of the application, the power consumption can be reduced, and the balance between the power consumption and the communication performance and/or the positioning performance is realized.

Description

Wake-up indication method in dual DRX mode and related device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method for indicating wake-up in a Dual Discontinuous Reception (DRX) mode and a related apparatus.

Background

In a Long Term Evolution (LTE) system, a New Radio (NR) system, or a sidelink (sidelink) system, power consumption of a User Equipment (UE) is very large when detecting a Physical Downlink Control Channel (PDCCH) or a Physical Sidelink Control Channel (PSCCH). In practice, however, data transmission is typically bursty. For example, there may be data transmitted for a period of time and no data transmitted for a longer period of time after the data transmission. Therefore, most PDCCH/PSCCH detections made by the UE are undetectable with any indication. Based on this, both LTE and NR systems introduce Discontinuous Reception (DRX) techniques. The network equipment indicates a DRX period to the UE, the UE performs PDCCH detection within active time (or wake-up time) in one DRX period, and performs dormancy within other time except the active time, thereby reducing the power consumption of the UE. However, when the UE performs PDCCH detection during the activation time, since data transmission often has burstiness and sparsity, the probability of no data transmission requirement is high, so that a considerable proportion of detected PDCCHs are not indicated, and therefore, power consumption is still high. Furthermore, since the UE in the NR system operates on a larger radio frequency and baseband bandwidth, the power consumption of the UE may be higher. Based on this, a wakeup signal (WUS) is introduced in the NR system to further reduce the power consumption of the UE. That is, before the network device indicates the DRX cycle to the UE, the network device sends the WUS to the UE to indicate whether the UE needs to wake up in the next DRX cycle, and performs PDCCH detection and/or receive a Physical Downlink Shared Channel (PDSCH) and/or perform measurement reporting when the UE wakes up.

For the UE supporting both the communication function and the positioning function, the smaller the power consumption, the better the communication performance and the positioning performance are guaranteed. In some scenarios, there may be only communication requirements or positioning requirements at the same time, and therefore, the same set of DRX parameters need not be configured for communication and positioning. Even if communication requirements and positioning requirements exist at the same time in some scenes, the UE can flexibly wake up or sleep due to different processing time and delay requirements for communication services and positioning services, and a communication schedule or a positioning schedule can be detected (or demodulated) in the wake-up situation. Therefore, for a UE supporting both communication and positioning functions, it is considered to introduce a dual DRX mechanism for communication traffic and positioning traffic, that is, to set DRX parameters, such as DRX cycle, DRX duration Timer (DRX-on Timer), DRX inactivity Timer (DRX-inactivity Timer), and the like, for communication traffic and positioning traffic, respectively. However, how to design the wake-up indicator on the dual DRX mechanism to further reduce power consumption and thereby achieve the tradeoff between power consumption and communication performance and/or positioning performance becomes an urgent issue to be solved.

Disclosure of Invention

The embodiment of the application provides a wake-up indication method in a dual-DRX mode and a related device, which can reduce power consumption and realize the balance between the power consumption and communication performance and/or positioning performance.

The present application is described below in terms of various aspects, it being understood that the following embodiments and advantages of the various aspects may be referred to one another.

In a first aspect, the present application provides a method for indicating wake-up in dual DRX mode, which is applied to a sidelink system, and the method includes: the first device sends a first Sidelink Control Information (SCI) in a broadcast manner, and then sends a second SCI in a multicast or unicast manner within a preset time window. The first SCI is used to indicate that the format of the second SCI is a first format, and the second SCI of the first format includes a wake-up indication bit. The wake indicator bit is used to indicate whether the second device is awake within the duration timer of the DRX cycle for communication traffic and awake within the duration timer of the DRX cycle for positioning traffic. The preset time window may be a Power saving offset duration (Power saving offset duration) before one DRX cycle.

Optionally, the first SCI is a first order SCI (1st stage SCI) and the second SCI is a second order SCI (2nd stage SCI).

Optionally, the length of the second-order SCI format field (2nd-stage SCI format field) in the first SCI is 2 bits, and when the second-order SCI format field takes the binary value of 10 or 11, the second-order SCI format field is used to indicate that the format of the second SCI is the first format. The first format is not either of the existing SCI format 2-A and SCI format 2-B.

Optionally, the length of the wake-up indication bit is 2 bits.

Therefore, the scheme respectively indicates whether the target UE (namely the second equipment) wakes up in the duration timer of the DRX period for the communication service and whether the target UE wakes up in the duration timer of the DRX period for the positioning service by newly designing a second-order SCI (namely the second SCI), so that on one hand, SCI does not need to be separately designed for the communication service and the positioning service, and the signaling overhead can be reduced; on the other hand, the balance of power consumption and communication performance and/or positioning performance can be realized through flexible waking-up or sleeping indication.

With reference to the first aspect, in one possible design, before the first device sends the second SCI, the method further includes: the first device sends Sidelink (SL) Radio Resource Control (RRC) signaling to the second device, where the SL RRC signaling indicates a start bit of the second SCI and/or a size of the second SCI.

Therefore, in the scheme, a SL RRC signaling is configured for the newly designed second-order SCI (i.e., the second SCI) to indicate the start bit and the size of the wakeup indication bit in the second-order SCI, so as to support the implementation of the wakeup indication in the dual DRX mode.

With reference to the first aspect, in one possible design, the second SCI further includes a first field and a second field. The first field is used to indicate the identity of the first device, which is the full Layer2 identity (full Layer2-ID) of the first device, represented by 24 bits. The second field is used to indicate the identity of the second device, which is the full Layer2 identity (full Layer2-ID) of the second device, also represented with 24 bits. The first field is 24 bits long and the second field is also 24 bits long.

As can be seen, in the present embodiment, by directly carrying the complete layer2 identifier of the second device in the second SCI, a situation that the complete layer2 identifier cannot be recovered without a Media Access Control (MAC) layer header (i.e., MAC header) can be avoided.

With reference to the first aspect, in a possible design, the second SCI further includes one or more of the following fields: a third field is used for indicating whether the second device wakes up on one or more carrier units corresponding to each bit included in the third field; a fourth field for instructing the second device to go to sleep for a start time and a sleep duration within a DRX duration of a DRX cycle for communication traffic and a DRX cycle for positioning traffic, or a fourth field for instructing the second device to go to sleep for a start time and a sleep duration within a DRX duration of a DRX cycle for communication traffic, and a fifth field for instructing the second device to go to sleep for a start time and a sleep duration within a DRX duration of a DRX cycle for positioning traffic; a sixth field is used to indicate a period for the second device to perform Physical Sidelink Control Channel (PSCCH) or first SCI detection. Wherein the third field includes one or more bits, each bit corresponding to one or more carrier elements (CCs). The length of the third field may be equal to the sum of the number of carrier elements used for communication traffic and the number of carrier elements used for positioning traffic.

It can be seen that this scheme facilitates supporting other functions by carrying one or more other optional fields (i.e., third, fourth, fifth, and sixth fields) in the second SCI.

In a second aspect, the present application provides a method for indicating wake-up in dual DRX mode, which is applied to a sidelink system, and the method includes: the second device receives the first SCI and then receives the second SCI. The first SCI is used to indicate that the format of the second SCI is a first format, and the second SCI of the first format includes a wake-up indication bit. The wake indicator bit is used to indicate whether the second device is awake within the duration timer of the DRX cycle for communication traffic and awake within the duration timer of the DRX cycle for location traffic.

Optionally, the length of the second-order SCI format field (2nd-stage SCI format field) in the first SCI is 2 bits, and when the second-order SCI format field takes the binary value of 10 or 11, the second SCI format field indicates that the second SCI format (fromat) is the first format. The first format is not either of the existing SCI format 2-A and SCI format 2-B.

Optionally, the length of the wake-up indication bit is 2 bits.

In one possible design with reference to the second aspect, if the wake-up indicator bit is used to indicate that the second device wakes up within the duration timer of the DRX cycle for communication services, the second device wakes up within the duration timer of the DRX cycle for communication services and performs PSCCH detection. And/or if the wake-up indication bit is used for indicating that the second equipment wakes up in the duration timer of the DRX period for the positioning service, the second equipment wakes up in the duration timer of the DRX period for the positioning service and carries out PSCCH detection.

Optionally, the "awake" and "sleep" mentioned herein are for PSCCH detection (or PSCCH blind detection), that is, the "awake" mentioned herein may be equivalently replaced by "performing PSCCH detection", and the "sleep" may be equivalently replaced by "not performing PSCCH detection".

With reference to the second aspect, in one possible design, after the second device receives the second SCI, the method further includes: the second device wakes up or sleeps within the duration timer of the DRX cycle for communication traffic and wakes up or sleeps within the duration timer of the DRX cycle for location traffic according to the indication of the wake-up indication bit in the second SCI.

With reference to the second aspect, in one possible design, before the second device receives the second SCI, the method further includes: the second device receives SL RRC signaling indicating a start bit of the second SCI and/or a size of the second SCI.

With reference to the second aspect, in one possible design, the second SCI further includes a first field and a second field. The first field is used to indicate the identity of the first device, which is the full Layer2 identity (full Layer2-ID) of the first device, represented by 24 bits. The second field is used to indicate the identity of the second device, which is a full Layer2 identity (full Layer2-ID) of the second device, also represented with 24 bits. The first field is 24 bits long and the second field is also 24 bits long.

With reference to the second aspect, in one possible design, the second SCI further includes one or more of the following fields: a third field is used for indicating whether the second device wakes up on one or more carrier units corresponding to each bit included in the third field; a fourth field for indicating a start time and a sleep duration for the second device to go to sleep within a DRX duration of a DRX cycle for communication traffic and a DRX cycle for positioning traffic, or a fourth field for indicating a start time and a sleep duration for the second device to go to sleep within a DRX duration of a DRX cycle for communication traffic, and a fifth field for indicating a start time and a sleep duration for the second device to go to sleep within a DRX duration of a DRX cycle for positioning traffic; a sixth field is used to indicate a period for the second device to perform Physical Sidelink Control Channel (PSCCH) or first SCI detection. Wherein the third field includes one or more bits, each bit corresponding to one or more carrier elements (CCs). The length of the third field may be equal to the sum of the number of carrier elements used for communication traffic and the number of carrier elements used for positioning traffic.

In a third aspect, the present application provides a method for indicating wake-up in dual DRX mode, which is applied to a sidelink system, and the method includes: the first device sends the third SCI in a broadcast form and then sends the fourth SCI in a multicast or unicast form within a preset time window. Wherein the third SCI is used to indicate that the format of the fourth SCI is a second format, and the fourth SCI of the second format includes a first wake-up indication bit. The first wake-up indicator bit is used to indicate whether the second device wakes up within a duration timer of the DRX cycle. The preset time window may be within the power saving offset duration one DRX cycle ago.

Alternatively, the third SCI is a first order SCI (1st stage SCI) and the fourth SCI is a second order SCI (2nd stage SCI).

Optionally, the length of the second-order SCI format field in the third SCI is k bits, where k is an integer greater than 2. When the value of the second-order SCI format field is greater than or equal to decimal 2 and less than or equal to 2 ^k -1, indicating that the format of the fourth SCI is the second format. The second format is not either of the existing SCI format 2-A and SCI format 2-B. Where k is equal to 3.

Optionally, the first wake-up indicator bit is specifically configured to indicate whether the second device wakes up within a duration timer of a DRX cycle used for the first service. The first service may be a communication service or a positioning service.

Optionally, the length of the first wake-up indication bit is 1 bit.

Therefore, according to the scheme, a second-order SCI is newly designed for the DRX period of the communication service or the DRX period of the positioning service to indicate whether the second equipment is awakened in the period of the second equipment, so that the meaning is clear, the power consumption is reduced, and the balance between the power consumption and the communication performance or the positioning performance is realized.

With reference to the third aspect, in one possible design, the method further includes: the first device sends the fifth SCI in a broadcast manner, and then sends the sixth SCI in a multicast or unicast manner within a preset time window. The fifth SCI indicates that the format of the sixth SCI is a third format. The fifth SCI of the third format includes a second wake-up indication bit. The second wake-up indication bit is used to indicate whether the second device wakes up within a duration timer of a DRX cycle for the second traffic. The second service is a communication service, and the first service is a positioning service; alternatively, the second service is a location service and the first service is a communication service.

Alternatively, the fifth SCI is a first order SCI (1st stage SCI) and the sixth SCI is a second order SCI (2nd stage SCI).

Optionally, the length of the second-order SCI format field in the fifth SCI is k bits, where k is an integer greater than 2. When the value of the second-order SCI format field in the fifth SCI is different from the value of the second-order SCI format field in the third SCI, and the value of the second-order SCI format field in the fifth SCI is greater than or equal to decimal 2 and less than or equal to decimal 2 ^k 1, indicating the format of the sixth SCI is the third format. The third format is neither any of the existing SCI format 2-A and SCI format 2-B nor the above-described second format. Where k is equal to 3.

Optionally, the length of the second wake-up indication bit is 1 bit.

Therefore, the scheme respectively designs a second-order SCI aiming at the DRX period of the communication service and the DRX period of the positioning service to indicate whether the second equipment is awakened in the period, the second-order SCI has clear meaning, the awakening indication in the DRX periods of the two services are not interfered with each other, the flexibility is high, the scheme is suitable for various scenes, the power consumption is favorably reduced, and the balance between the power consumption and the communication performance and the positioning performance is realized.

With reference to the third aspect, in one possible design, before the first device sends the fourth SCI, the method further includes: the first device sends first SL RRC signaling to the second device, where the first SL RRC signaling is used to indicate a start bit of the fourth SCI and/or a size of the fourth SCI.

With reference to the third aspect, in one possible design, before the first device sends the sixth SCI, the method further includes: the first device sends second SL RRC signaling to the second device, where the second SL RRC signaling is used to indicate a start bit of the sixth SCI and/or a size of the sixth SCI.

As can be seen, in the present solution, a SL RRC signaling is configured for a newly designed second-order SCI (i.e., a fourth SCI or a sixth SCI) format to indicate the start bit and the size of the wakeup indication bit in the second-order SCI, so as to support the implementation of the wakeup indication in the dual DRX mode.

With reference to the third aspect, in one possible design, each of the fourth SCI and the sixth SCI includes a first field and a second field. The first field is used to indicate the identity of the first device, which is the full Layer2 identity (full Layer2-ID) of the first device, represented by 24 bits. The second field is used to indicate the identity of the second device, which is the full Layer2 identity (full Layer2-ID) of the second device, also represented with 24 bits. The first field is 24 bits long and the second field is also 24 bits long.

With reference to the third aspect, in one possible design, each of the fourth SCI and the sixth SCI includes one or more of the following fields: a third field is used for indicating whether the second device wakes up on a carrier unit corresponding to each bit of the third field; the fourth field is used for indicating the starting time and the sleeping duration of the second device entering the sleep in the DRX period for the first service or the DRX duration in the DRX period for the second service, and the sixth field is used for indicating the period of the second device for PSCCH detection or third SCI or fifth SCI detection. The third field includes one or more bits, each bit corresponding to one or more carrier elements. The length of the third field may be equal to the number of carrier elements used for communication services or the number of carrier elements used for positioning services.

In a fourth aspect, the present application provides a method for indicating wake-up in dual DRX mode, which is applied to a sidelink system, and the method includes: the second device receives the third SCI and then receives the fourth SCI. Wherein the third SCI is used to indicate that the format of the fourth SCI is a second format, and the fourth SCI of the second format includes a first wake-up indication bit. The first wake-up indicator bit is used to indicate whether the second device wakes up within the duration timer of the DRX cycle.

Optionally, the length of the second-order SCI format field in the third SCI is k bits, where k is an integer greater than 2. When the value of the second-order SCI format field is greater than or equal toIs equal to decimal 2 and less than or equal to 2 ^k -1, indicating that the format of the fourth SCI is the second format. The second format is not any of the existing SCI format 2-A and SCI format 2-B. Where k is equal to 3.

Optionally, the first wake-up indication bit is specifically used to indicate whether the second device wakes up within a duration timer of a DRX cycle used for the first service. The first service may be a communication service or a positioning service.

Optionally, the length of the first wake-up indication bit is 1 bit.

In combination with the fourth aspect, in one possible design, the method further includes: the second device receives the fifth SCI and then receives the sixth SCI. The fifth SCI is used to indicate that the format of the sixth SCI is a third format. The fifth SCI of the third format includes a second wake-up indication bit. The second wake-up indication bit is used to indicate whether the second device wakes up within a duration timer of a DRX cycle for the second traffic. The second service is a communication service, and the first service is a positioning service; alternatively, the second service is a location service and the first service is a communication service.

Optionally, the length of the second-order SCI format field in the fifth SCI is k bits, where k is an integer greater than 2. When the value of the second-order SCI format field in the fifth SCI is different from the value of the second-order SCI field in the third SCI, and the value of the second-order SCI format field in the fifth SCI is greater than or equal to decimal 2 and less than or equal to 2 ^k -1, indicating that the format of the sixth SCI is the third format. The third format is neither any of the existing SCI format 2-A and SCI format 2-B nor the above-described second format. Where k is equal to 3.

Optionally, the length of the second wake-up indication bit is 1 bit.

With reference to the fourth aspect, in one possible design, before the second device receives the fourth SCI, the method further includes: the second device receives first SL RRC signaling indicating a start bit of the fourth SCI and/or a size of the fourth SCI.

With reference to the fourth aspect, in one possible design, before the second device receives the sixth SCI, the method further includes: the second device receives second SL RRC signaling indicating a start bit of the sixth SCI and/or a size of the sixth SCI.

With reference to the fourth aspect, in one possible design, if the first wake-up indication bit is used to indicate that the second device wakes up within the duration timer of the DRX cycle, the second device wakes up within the duration timer of the DRX cycle and performs PSCCH detection. And/or if the second wake-up indication bit is used for indicating that the second device wakes up within the duration timer of the DRX cycle for the second service, the second device wakes up within the duration timer of the DRX cycle for the second service and performs PSCCH detection.

In one possible design, in combination with the fourth aspect, after the second device receives the fourth SCI, the method further includes: and the second equipment wakes up or sleeps in the duration timer of the DRX period according to the indication of the first wake-up indication bit in the fourth SCI.

With reference to the fourth aspect, in one possible design, after the second device receives the sixth SCI, the method further includes: and the second device wakes up or sleeps in the duration timer of the DRX period for the second service according to the indication of the second wake-up indication bit in the sixth SCI.

With reference to the fourth aspect, in one possible design, each of the fourth SCI and the sixth SCI includes a first field and a second field. The first field is used to indicate the identity of the first device, which is the full Layer2 identity (full Layer2-ID) of the first device, represented by 24 bits. The second field is used to indicate the identity of the second device, which is the full Layer2 identity (full Layer2-ID) of the second device, also represented with 24 bits. The first field is 24 bits in length and the second field is also 24 bits in length.

With reference to the fourth aspect, in one possible design, each of the fourth SCI and the sixth SCI includes one or more of the following fields: a third field is used for indicating whether the second device wakes up on a carrier unit corresponding to each bit of the third field; the fourth field is used for indicating the starting time and the sleeping duration of the second device entering the sleep in the DRX period for the first service or the DRX duration in the DRX period for the second service, and the sixth field is used for indicating the period of the second device for PSCCH detection or third SCI or fifth SCI detection. The third field includes one or more bits, each bit corresponding to one or more carrier elements. The length of the third field may be equal to the number of carrier elements used for communication services or the number of carrier elements used for positioning services.

In a fifth aspect, the present application provides a method for indicating wake-up in dual DRX mode, which is applied in a cellular system, and the method includes: the network device sends Downlink Control Information (DCI) within a preset time window, which may be a power saving offset duration (power saving offset duration) before one DRX cycle. Wherein the DCI includes a wake-up indicator bit for indicating whether the terminal device wakes up within a duration timer of a DRX cycle for communication traffic and whether it wakes up within a duration timer of a DRX cycle for positioning traffic. The format of the DCI is a format of DCI used in the NR system to indicate whether the terminal device wakes up within a duration timer of a DRX cycle of a communication service, that is, the format of the DCI is DCI format 2-6.

Optionally, the DCI adopts a block design, and each block of the DCI includes an awake indication bit. The length of the wake-up indication bit is 2 bits.

Therefore, the scheme can simultaneously indicate whether the terminal equipment is awakened in the DRX-on duration of the DRX period for the communication service and whether the terminal equipment is awakened in the DRX-on duration of the DRX period for the positioning service by expanding the function of the traditional DCI fromat 2-6, so that on one hand, DCI does not need to be separately designed for the communication service and the positioning service, and the signaling overhead can be reduced; on the other hand, the awakening or sleeping of the communication and positioning services can be separately indicated to realize the balance of power consumption and communication performance and/or positioning performance.

With reference to the fifth aspect, in a possible design, the DCI further includes a first indicator bit, where the first indicator bit is used to indicate whether the terminal device wakes up on a secondary cell corresponding to each bit included in the first indicator bit. The length of the first indicating bit is p bits, and p is equal to the number of the secondary cells or the number of the secondary cell groups for positioning service. P is an integer greater than or equal to 0.

Therefore, the scheme can indicate the awakening and sleeping on the main cell through the awakening indication bit and indicate the awakening and sleeping on the auxiliary cell through the first indication bit, so that the power consumption can be further saved.

In a sixth aspect, the present application provides a method for indicating wake-up in dual DRX mode, which is applied in a cellular system, and the method includes: the terminal device receives the DCI. Wherein the DCI includes a wake-up indicator bit for indicating whether the terminal device wakes up within a duration timer of a DRX cycle for communication traffic and whether it wakes up within a duration timer of a DRX cycle for positioning traffic. The format of the DCI is a format of DCI used in the NR system to indicate whether the terminal device wakes up within a duration timer of a DRX cycle of a communication service, that is, the format of the DCI is DCI format 2-6.

Optionally, the DCI adopts a block design, and each block of the DCI includes an awake indication bit. The wake-up indicator bit is 2 bits in length.

With reference to the sixth aspect, in one possible design, if the wake-up indicator is used to indicate that the terminal device wakes up within the duration timer of the DRX cycle for communication traffic, the terminal device wakes up within the duration timer of the DRX cycle for communication traffic and performs PDCCH detection. And/or if the wake-up indicator bit is used for indicating the terminal equipment to wake up in the duration timer of the DRX period for the positioning service, the terminal equipment wakes up in the duration timer of the DRX period for the positioning service and performs PDCCH detection.

With reference to the sixth aspect, in one possible design, after the terminal device receives the DCI, the method further includes: and the terminal equipment analyzes the first DCI, wakes up or sleeps in a duration timer of a DRX period for communication service according to the indication of the first wake-up indicator bit in the first DCI, and wakes up or sleeps in the duration timer of the DRX period for positioning service.

With reference to the sixth aspect, in a possible design, the DCI further includes a first indicator bit, where the first indicator bit is used to indicate whether the terminal device wakes up on a secondary cell corresponding to each bit included in the first indicator bit. The length of the first indicator bit is p bits, and p is equal to the number of the secondary cells or the number of the secondary cell groups used for positioning service. P is an integer greater than or equal to 0.

In a seventh aspect, the present application provides a method for indicating wake-up in dual DRX mode, which is applied in a cellular system, and the method includes: the network device transmits the first DCI within a preset time window, which may be a power saving offset duration (power saving offset duration) one DRX cycle ago. The first DCI includes a first wake-up indicator bit for indicating whether a terminal device wakes up within a duration timer of a DRX cycle for positioning traffic. The format of the first DCI is not a DCI format for indicating whether a terminal device wakes up within a duration timer of a DRX cycle for a communication service, i.e., the format of the first DCI is not an existing DCI format 2-6.

Optionally, the first DCI is in a block design, and each block of the first DCI includes a first wake-up indicator bit. The length of the first wake-up indication bit is 1 bit.

Therefore, the scheme designs a new DCI format for the DRX period of the positioning service in the cellular system to indicate the awakening or sleeping in the DRX-on duration of the DRX period of the positioning service, has clear meaning and high flexibility on one hand, and can be suitable for various scenes; on the other hand, the power consumption can be reduced, and the balance of the power consumption and the communication performance and/or the positioning performance can be realized.

With reference to the seventh aspect, in one possible design, the method further includes: and the network equipment transmits a second DCI, wherein the format of the second DCI is a format of DCI used for indicating whether the terminal equipment wakes up within a duration timer of a DRX period of communication service in the NR system, namely the format of the second DCI is the existing DCI format 2-6. The second DCI includes a second wake-up indicator bit for indicating whether the terminal device wakes up within a duration timer of a DRX cycle for communication traffic.

Optionally, the second DCI adopts a block design, and each block of the second DCI includes a second wake-up indicator bit. The length of the second wake-up indication bit is 1 bit.

With reference to the seventh aspect, in one possible design, before the network device sends the first DCI, the method further includes: the network device sends RRC signaling, which indicates a start bit and/or a size of the first wake-up indication bit.

As can be seen, in the present solution, an RRC signaling is configured for a newly designed DCI (i.e., a first DCI) format, and is used to indicate a start bit of a first wake-up indication bit corresponding to a terminal device and a size of a block (block) where the first wake-up indication bit is located, so as to support implementation of wake-up indication in a dual DRX mode.

With reference to the seventh aspect, in a possible design, the first DCI further includes a first indicator bit, where the first indicator bit is used to indicate whether a terminal device wakes up on a secondary cell corresponding to each bit included in the first indicator bit. The length of the first indicating bit is p bits, and p is equal to the number of the secondary cells or the number of the secondary cell groups for positioning service. P is an integer greater than or equal to 0.

In an eighth aspect, the present application provides a method for indicating wake-up in dual DRX mode, which is applied in a cellular system, and the method includes: and the terminal equipment receives the first DCI, wherein the first DCI comprises a first awakening indicator bit which is used for indicating whether the terminal equipment is awakened in a duration timer of a DRX period for positioning service. The format of the first DCI is not a DCI format for indicating whether a terminal device wakes up within a duration timer of a DRX cycle for a communication service, i.e., the format of the first DCI is not an existing DCI format 2-6.

With reference to the eighth aspect, in one possible design, the method further includes: and the terminal equipment receives a second DCI, wherein the format of the second DCI is a format of DCI used for indicating whether the terminal equipment wakes up within a duration timer of a DRX period of communication service in the NR system, namely the format of the second DCI is the existing DCI format 2-6. The second DCI includes a second wake-up indicator bit indicating whether the terminal device wakes up within a duration timer of a DRX cycle for communication traffic.

With reference to the eighth aspect, in one possible design, before the terminal device receives the first DCI, the method further includes: the terminal device receives RRC signaling, and the RRC signaling is used for indicating the starting bit and/or the size of the first awakening indication bit.

With reference to the eighth aspect, in a possible design, if the first wake-up indicator bit is used to indicate that the terminal device wakes up within a duration Timer (DRX-on duration Timer) of a DRX cycle used for communication services, the terminal device wakes up within the duration Timer of the DRX cycle used for communication services and performs PDCCH detection. And/or if the second wake-up indicator bit is used for indicating the terminal device to wake up in the duration timer of the DRX cycle for positioning service, the terminal device wakes up in the duration timer of the DRX cycle for positioning service and performs PDCCH detection.

With reference to the eighth aspect, in one possible design, after the terminal device receives the first DCI, the method further includes: and the terminal equipment analyzes the first DCI and wakes up or sleeps in the duration timer of the DRX period for the positioning service according to the indication of the first wake-up indication bit in the first DCI.

With reference to the eighth aspect, in a possible design, the first DCI further includes a first indicator bit, where the first indicator bit is used to indicate whether a terminal device wakes up on a secondary cell corresponding to each bit included in the first indicator bit. The length of the first indicator bit is p bits, and p is equal to the number of the secondary cells or the number of the secondary cell groups used for positioning service. P is an integer greater than or equal to 0.

In a ninth aspect, the present application provides a communication apparatus, which may be a first device or a chip in the first device. The communication apparatus includes means and/or modules for performing the method for indicating wake-up in dual DRX mode provided in the first aspect, or the third aspect, or any one of the possible implementations of the first aspect, or any one of the possible implementations of the third aspect, so that the beneficial effects (or advantages) of the method for indicating wake-up in dual DRX mode provided in the first aspect or the third aspect can also be achieved.

In a tenth aspect, the present application provides a communication apparatus, which may be a second device or a chip in the second device. The communication apparatus includes means and/or modules for performing the method for indicating wake-up in dual DRX mode provided by the second aspect, or the fourth aspect, or any possible implementation manner of the second aspect, or any possible implementation manner of the fourth aspect, so that the advantageous effects (or advantages) of the method for indicating wake-up in dual DRX mode provided by the second aspect or the fourth aspect can also be achieved.

In an eleventh aspect, the present application provides a communication device that may include a processor, a memory, and a transceiver. Wherein the memory is configured to store a computer program, the transceiver is configured to transceive various information or signaling, and the computer program comprises program instructions, which, when executed by the processor, cause the communication apparatus to perform the method for indicating wake-up in dual DRX mode as described in any one of the first aspect to the eighth aspect or any one of the possible implementations of any one of the aspects. The transceiver may be a radio frequency module in a communication device, or a combination of the radio frequency module and an antenna, or an input/output interface of a chip or a circuit.

In a twelfth aspect, the present application provides a readable storage medium, which has program instructions stored thereon, and when the program instructions are executed on a computer, the computer executes the method for indicating wake-up in dual DRX mode described in any one of the above first aspect to the above eighth aspect, or any one of the possible implementation manners of any one of the above aspects.

In a thirteenth aspect, the present application provides a program product containing instructions that, when executed, cause the method for indicating wake-up in dual DRX mode as described in any one of the possible implementations of the first aspect to the eighth aspect to be performed.

In a fourteenth aspect, the present application provides an apparatus, which may be implemented in the form of a chip or an apparatus, and includes a processor. The processor is configured to read and execute a program stored in the memory to perform one or more of the above first aspect to the above eighth aspect, or a method for indicating wake-up in dual DRX mode provided in one or more of any possible implementation manners of any aspect. Optionally, the apparatus further comprises a memory, the memory being electrically connected to the processor. Further optionally, the apparatus further comprises a communication interface, and the processor is connected to the communication interface. The communication interface is used for receiving information and/or signaling needing to be processed, the processor acquires the information and/or signaling from the communication interface, processes the information and/or signaling, and outputs a processing result through the communication interface. The communication interface may be an input output interface.

Alternatively, the processor and the memory may be physically separate units, or the memory and the processor may be integrated together.

In a fifteenth aspect, the present application provides a communication system including the communication apparatus described in the above third aspect or the above seventh aspect, and the communication apparatus described in the above fourth aspect or the above eighth aspect.

By implementing the embodiment of the application, the power consumption can be reduced, and the balance between the power consumption and the communication performance and/or the positioning performance is realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.

FIG. 1 is a schematic diagram of several positioning scenarios provided in an embodiment of the present application;

fig. 2 is a schematic diagram of alignment of duration timers at a starting time in two DRX cycles provided by an embodiment of the present application;

fig. 3 is a first schematic flowchart of a wake-up indication method in dual DRX mode according to an embodiment of the present disclosure;

FIG. 4 is a diagram illustrating a second SCI format provided by an embodiment of the present application;

fig. 5 is a first diagram illustrating DRX-on duration Timer alignment scenarios of DRX-C and DRX-P according to an embodiment of the present disclosure;

fig. 6 is a first scenario diagram illustrating a location service existing in a sleep period of DRX-C according to an embodiment of the present disclosure;

fig. 7 is a first scenario diagram illustrating a positioning service existing in a DRX-on duration Timer of DRX-C according to an embodiment of the present disclosure;

fig. 8 is a second schematic flowchart of a wake-up indication method in dual DRX mode according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of the format of SCI format 2-C and SCI format 2-D provided in the present embodiment;

fig. 10 is a schematic view illustrating a second scenario in which a positioning service exists in a DRX-C sleep period according to an embodiment of the present application;

fig. 11 is a schematic diagram of a scenario in which DRX-C and DRX-P do not overlap in time according to an embodiment of the present disclosure;

fig. 12 is a second scenario diagram illustrating a positioning service existing in a DRX-on duration Timer of a DRX-P according to an embodiment of the present disclosure;

fig. 13 is a diagram illustrating a DRX-on duration Timer alignment scenario of DRX-C and DRX-P according to an embodiment of the present disclosure;

fig. 14 is a third schematic flowchart of a wake-up indication method in dual DRX mode according to an embodiment of the present application;

fig. 15 is a schematic diagram of a format of DCI provided in an embodiment of the present application;

fig. 16 is a fourth schematic flowchart of a wake-up indication method in dual DRX mode according to an embodiment of the present application;

fig. 17 is a schematic diagram of a format of a first DCI provided in an embodiment of the present application;

FIG. 18 is a diagram illustrating the format of DCI format 2-6 in the NR system;

fig. 19 is a schematic structural diagram of a communication device 1 according to an embodiment of the present application;

fig. 20 is a schematic structural diagram of a communication device 2 according to an embodiment of the present application;

fig. 21 is a schematic structural diagram of a communication device 3 according to an embodiment of the present application;

fig. 22 is a schematic structural diagram of a communication device 4 according to an embodiment of the present application;

fig. 23 is a schematic structural diagram of a communication device 1000 according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

In the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same or similar items having substantially the same function and action. For example, the first SCI and the second SCI are only used to distinguish different information, and the order of the first SCI and the second SCI is not limited. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.

In the embodiments of the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c; a and b; a and c; b and c; or a and b and c. Wherein a, b and c can be single or multiple.

In the embodiment of the present application, the "dual DRX mode" refers to a case where DRX mode configuration and parameter configuration are performed for communication traffic and positioning traffic, respectively.

To facilitate understanding of the method for indicating wake-up in dual DRX mode provided in the embodiment of the present application, an application scenario of the method for indicating wake-up in dual DRX mode provided in the embodiment of the present application will be described below. It can be understood that the application scenario described in the embodiment of the present application is for more clearly explaining the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided in the embodiment of the present application.

The wake-up indication method in the dual DRX mode provided in the embodiment of the present application may be used in a positioning scenario supporting wireless communication, such as 5G NR, sidelink, WiFi, Ultra Wide Band (UWB), and bluetooth. In the embodiments of the present application, the term "wireless communication" may also be simply referred to as "communication", and the term "communication" may also be described as "data transmission", "information transmission", or "transmission".

Referring to fig. 1, fig. 1 is a schematic diagram of several positioning scenarios provided in the embodiment of the present application. As shown in fig. 1, fig. 1 illustrates several common positioning scenarios: cellular positioning, sidelink communication and positioning, WiFi positioning, and UWB positioning/bluetooth positioning. In view of network topology, if the system is a cellular positioning system, each terminal device is located within the coverage of a base station. In the case of the sidelink communication and positioning system, each terminal device may be located within the coverage area of the base station or outside the coverage area of the base station. In case of WiFi positioning, each terminal device (e.g., station) may be located within a coverage area of an Access Point (AP) or outside the coverage area of the AP. If the positioning is Bluetooth positioning or UWB positioning, the terminal device can be positioned in the coverage range of the anchor point, and can also be positioned outside the coverage range of the anchor point. Optionally, each device participating in positioning may transmit a positioning measurement reference signal such as a Positioning Reference Signal (PRS), a channel state information reference signal (CSI-RS), or a Tracking Reference Signal (TRS), and has DRX capability. It should be understood that the method for indicating wake-up in dual DRX mode provided in this embodiment of the present application may be applied to various positioning scenarios shown in fig. 1, and it should be further understood that fig. 1 is only an example, and the method for indicating wake-up in dual DRX mode provided in this embodiment of the present application may also be applied to other positioning scenarios supporting wireless communication.

The network device related to the embodiment of the present application is an entity for transmitting or receiving signals on a network side, such as a Base Station (BS), a WiFi AP, a UWB anchor point, an indoor coverage small station, and the like. A network device is a device deployed in a radio access network that is capable of wireless communication with a terminal. The Base Stations (BSs) may be fixed or mobile. The base station may broadly cover or replace various names such as: node b (NodeB), evolved node b (eNB), next generation base station (next generation NodeB, gNB), relay station, Transmission and Reception Point (TRP), Transmission Point (TP), master station MeNB, secondary station SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, transmission node, transceiver node, baseband unit (BBU), Remote Radio Unit (RRU), Active Antenna Unit (AAU), radio head (RRH), Central Unit (CU), Distribution Unit (DU), positioning node, and the like. The network devices may support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices.

The terminal device related to the embodiment of the application is an entity, such as a mobile phone, on a user side for receiving or transmitting signals.

Terminal devices may be used to connect people, objects and machines. The terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), or the like. Wherein the UE comprises a handheld device, an in-vehicle device, a wearable device (bracelet, smart watch), a sensor, a data card, or a computing device with wireless communication functionality. Illustratively, the UE may be a mobile phone (mobile phone), a laptop, a tablet computer, or a computer with wireless transceiving function. The terminal device may also be a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and so on. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal device.

Optionally, the UE may also be configured to act as a base station. For example, the UE may act as a scheduling entity that provides sidelink signals between UEs in vehicle-to-evolution (V2X), device-to-device (D2D), peer-to-peer (P2P), or the like.

It should be understood that the network device and the terminal device related to the embodiments of the present application both have DRX capability and support communication and positioning functions.

The foregoing briefly explains possible application scenarios of the embodiments of the present application, and in order to better understand the technical solution of the embodiments of the present application, the following briefly introduces DRX and wake-up indication in a cellular network.

In a Carrier Aggregation (CA) scenario, since carrier frequency bands used by different serving cells are different, for example, a primary cell (Pcell) uses an FR1 frequency band, and a Secondary cell (Scell) uses an FR2 frequency band, different DRX parameters may be configured for the primary cell and the Secondary cell, and a Secondary discontinuous reception Group (Secondary DRX Group) mechanism may be introduced. Because the frequency of the FR2 frequency band is higher than that of the FR1 frequency band, and when the UE operates in a larger radio frequency and baseband bandwidth, the power consumption of the UE is higher, so a discontinuous reception group 2(DRX group2) is configured for the Scell cell, and corresponding DRX parameters are a short DRX Duration Timer (short DRX-on Duration Timer) and a short DRX Inactivity Timer (short DRX-Inactivity Timer), so that the UE can enter an inactive state or a dormant state more quickly in the Scell, thereby obtaining a higher power consumption saving gain. Meanwhile, one wake signal (WUS) is used to indicate the wake-up or sleep of two DRX groups. When the periods of the two DRX groups are not consistent (such as Pcell configuring long DRX period and Scell configuring short DRX period), a single-bit WUS is used for indication, and the awakening and dormancy of the long-period DRX group listen to the WUS indication of the short-period DRX group close to the long-period DRX group. Also, since the Secondary DRX Group mechanism indicates the wake-up or sleep of two serving cells by one WUS (i.e., a single-bit WUS indication), the Secondary DRX Group mechanism is only applicable to a scenario in which Duration timers (DRX-on Duration timers) of two DRX cycles are aligned (or the same) at the start time. Referring to fig. 2, fig. 2 is a schematic diagram illustrating alignment of duration timers at start times in two DRX cycles according to an embodiment of the present application. As shown in fig. 2, the UE wakes up for a period of time indicated by the drx-on Duration Timer for PDCCH detection. Furthermore, the Secondary DRX Group mechanism does not support cross-carrier scheduling, so the power consumption is still large when performing Carrier Cell (CC) measurements.

Therefore, the embodiment of the present application provides a method for indicating wake-up in dual DRX mode, which can respectively indicate wake-up or sleep for positioning service and wake-up or sleep for communication service in a scenario where starting times of duration timers in two DRX cycles are not aligned (or different); power consumption may also be reduced, enabling tradeoffs of power consumption with communication performance and/or positioning performance.

The technical solutions provided in the present application will be described in detail below with reference to more drawings.

The technical scheme provided by the application is explained in detail through four embodiments. The first embodiment describes a scheme for uniformly designing wake-up indicators for DRX cycles of communication services and positioning services in a sidelink system. The second embodiment illustrates a scheme for designing wake-up indicators separately for the DRX cycle of communication traffic and the DRX cycle of positioning traffic in the sidelink system. The third embodiment illustrates a scheme for uniformly designing the wake-up indication for the DRX cycle of the communication service and the DRX cycle of the positioning service in the cellular system. The fourth embodiment describes a scheme for independently designing the wake-up indication for the DRX cycle of the positioning service in the cellular system. It is understood that the same or similar parts of the concepts or schemes involved in the first to fourth embodiments of the present application may be mutually referred to or combined. Each of the examples is described in detail below.

Optionally, the technical solution provided by the present application may be implemented by a first device and a second device. The first device may be a network device, such as a base station; or may be a terminal device such as a UE. The second device is a terminal device, such as a UE. The first device and the second device are DRX capable and support communication and positioning functions. It should be appreciated that in a sidelink system, the first device and the second device are different terminal devices participating in the positioning. In a cellular system, the first device is a network device participating in positioning and the second device is a terminal device participating in positioning.

For convenience of description, a DRX cycle for communication traffic will be hereinafter referred to as DRX-C, i.e., DRX-communication; the DRX period used for the positioning service is DRX-P, namely DRX-positioning.

It should be understood that the "dual DRX mode" mentioned in the embodiments of the present application refers to a case where DRX cycles are set for communication traffic and positioning traffic, respectively.

Example one

In the first embodiment of the present application, a scheme is mainly introduced that, when a communication service and a positioning service exist simultaneously in a sidelink system for a period of time, wake-up indications are uniformly designed for a DRX cycle of the communication service and a DRX cycle of the positioning service, that is, one wake-up signal is used to respectively indicate wake-up or sleep in the DRX cycles of the two services.

Referring to fig. 3, fig. 3 is a first schematic flowchart of a wake-up indication method in dual DRX mode according to an embodiment of the present disclosure. As shown in fig. 3, the method for indicating wake-up in dual DRX mode includes, but is not limited to, the following steps:

s101, the first device sends first Sidelink Control Information (SCI).

And S102, the first device sends a second SCI, wherein the first SCI is used for indicating that the format of the second SCI is a first format, and the second SCI of the first format comprises a wake-up indication bit which is used for indicating whether the second device wakes up in a duration timer of a Discontinuous Reception (DRX) cycle used for communication service and wakes up in the duration timer of the DRX cycle used for positioning service.

Optionally, in this embodiment of the present application, both communication service and positioning service exist between the first device and the second device, and both the first device and the second device enter the dual DRX mode. The first device transmits first Sidelink Control Information (SCI) in a broadcast form. The first device sends the second SCI within a preset time window in a multicast or unicast mode. The preset time window may be a Power saving offset (Power saving offset) period before one DRX cycle. Wherein the first SCI is a first order SCI (1st stage SCI) and the second SCI is a second order SCI (2nd stage SCI). The first order SCI (1st stage SCI) contains a resource indication of the second order SCI (2nd stage SCI), which is UE specific. In other words, all UEs can resolve the first order SCI to obtain the resource indication of the second order SCI, but a second order SCI can only be resolved by a specific UE to obtain the information contained therein. Specifically, the first-order SCI (1st stage SCI) may be used to indicate the format type of the second-order SCI (2nd stage SCI), so the first SCI may be used to indicate the format of the second SCI. The second-order SCI format field (2nd-stage SCI format field) of the first SCI has a length of 2 bits, and indicates that the second SCI has the first format when the second-order SCI format field has a value of binary 10 or 11. The first format is not any of the existing SCI format 2-A and SCI format 2-B, for example, the second SCI format is SCI format 2-C. It should be understood that the names of the formats of the second SCI are not limited in the embodiments of the present application, and for the convenience of distinguishing from the SCI format 2-a and SCI format 2-B, the formats of the second SCI are hereinafter referred to as SCI format 2-C. The second order SCI (2nd stage SCI) can be used to carry the indication bits of the wake-up signal, so the second SCI includes the wake-up indication bits. The wake-up indicator bit is used to indicate whether the second device wakes up within a duration Timer (DRX-on Timer) of a DRX cycle for communication traffic and whether it wakes up within the duration Timer of the DRX cycle for positioning traffic.

It should be understood that in this application, the terms "wake-up signal" and "wake-up indicator bit" are used interchangeably. The terms "duration Timer" and "drx-on duration Timer" may also be referred to simply as "duration", which may also be described as "wake-up time".

The implementation of the first SCI and the second SCI will be described in detail below.

Optionally, since the wake-up indication in the sidelink system is UE-specific (UE-specific), the SCI carrying the wake-up indication is also per-UE or UE-specific, and thus a two-step SCI (two-stage SCI) is required for indication. Wherein 1st stage SCI (as the first SCI mentioned above) is used to indicate the format type of 2nd stage SCI, and 2nd stage SCI (as the second SCI mentioned above) is used to carry the indication bit of the wake-up signal. And because the 2nd stage SCI in the 3GPP sidelink system only has two formats of SCI format 2-A and SCI format 2-B, and both SCI format 2-A and SCI format 2-B are scheduling control information for communication services. Therefore, in the embodiment of the present application, the 2nd SCI format type is first extended, and a new 2nd SCI format is introduced to carry the wakeup indication bit.

Specifically, the length of the second-order SCI format field (2nd-stage SCI format field) in the first SCI is 2 bits, and the embodiment of the present application extends the function of the second-order SCI format field, and when the second-order SCI format field takes a reserved value, such as "10" or "11", it is used to indicate that the format of the second SCI is SCI format 2-C (i.e., the first format). In the first SCI of the embodiment of the present application, the value of the second-order SCI format field is 10 or 11.

See Table 1 below, where Table 1 shows the values and meanings of the 2nd-stage SCI format field in 1st stage SCI. As shown in table 1, when the second-order SCI format field takes the value 00, it indicates that the second-order SCI format is SCI format 2-a; when the value of the second-order SCI format field is 01, the second-order SCI format is SCI format 2-B; when the value of the second-order SCI format field is 10, the second-order SCI format is SCI format 2-C; when the second-order SCI format field takes a value of 11, it indicates reservation or is used as other functional extensions. It should be understood that, when the second-order SCI format field takes a value of 11, it may indicate that the second-order SCI format is SCI format 2-C; and when the value of the second-order SCI format field is 10, the second-order SCI format field is reserved or used as other function extensions.

TABLE 1

Optionally, the format of the second SCI is SCI format 2-C, and the second SCI includes a wake-up indication bit, a first field, and a second field. The wake-up indicator bit is used to indicate whether the second device wakes up within a DRX-on duration Timer for a DRX cycle for communication traffic and whether it wakes up within the DRX-on duration Timer for a DRX cycle for positioning traffic. The first field is used to indicate an identity of the first device, which is a full Layer2 identity (full Layer2-ID) of the first device, represented by 24 bits. The second field is used to indicate the identity of the second device, which is a full Layer2 identity (full Layer2-ID) of the second device, also represented with 24 bits. The first field may be referred to as a source identification field, and the second field may be referred to as a target identification field, and it should be understood that the first field and the second field may also have other names.

Optionally, the second SCI further includes one or more of the following fields: a third field, a fourth field, a fifth field, and a sixth field. The third field includes one or more bits, each bit corresponding to one or more carrier elements (CCs). The third field is used to indicate whether the second device wakes up on one or more carrier units corresponding to each bit included in the third field. The length of the third field may be equal to the sum of the number of carrier elements used for communication traffic and the number of carrier elements used for positioning traffic. The fourth field is used to indicate a start time and a sleep duration for the second device to go to sleep within a DRX-on duration Timer of DRX-C and DRX-P. Or, the fourth field is used to indicate the start time and the sleep duration of the second device going to sleep in the DRX-on duration Timer of DRX-C, and the fifth field is used to indicate the start time and the sleep duration of the second device going to sleep in the DRX-on duration Timer of DRX-P. The sixth field is used to indicate a period for the second device to perform Physical Sidelink Control Channel (PSCCH) or first SCI detection. Wherein, the third field may be referred to as a sleep indication field, the fourth field may be referred to as a PSCCH skip indication field or a PSCCH skip indication 1 field, the fifth field may be referred to as a PSCCH skip indication 2 field, and the sixth field may be referred to as a detection period indication field; it should be understood that the third field, the fourth field, the fifth field, and the sixth field may also have other names, and the embodiments of the present application are not limited thereto.

Referring to fig. 4, fig. 4 is a schematic diagram of a format of a second SCI provided by an embodiment of the present application. As shown in fig. 4, the second SCI (i.e., SCI format 2-C) includes a source identification (source ID) field, a destination identification (destination ID) field, and a Wake-up indication (Wake-up indication) bit, and optionally further includes one or more of a sleep indication (sleep indication) field, a PSCCH skip indication (PSCCH skip indication) field, and a detection period indication (sensing periodic indication) field.

Wherein, the source ID field (i.e. the first field) has a length of 24 bits and is used for indicating the full Layer2 identity (Layer2-ID) of the source UE (i.e. the first device). The full layer2 identity of the source UE (i.e. the first device described above) may also be 24 bits. It should be understood that the length of the source ID field (i.e., the first field) may also be greater than 24 bits, which is not limited in this embodiment of the application. The destination ID field (i.e., the second field) has a length of 24 bits and is used to indicate the full Layer2 identity (Layer2-ID) of the target UE (i.e., the second device). The full layer2 identity of the target UE (i.e. the second device described above) may also be 24 bits. It should be understood that the length of the destination ID field (i.e., the second field) may also be greater than 24 bits, which is not limited in this embodiment of the application. It can be seen that, because there may be no communication schedule between the source UE (i.e., the first device) and the target UE (i.e., the second device), and there is no way to send a Media Access Control (MAC) layer header (i.e., MAC header) in a physical sidelink shared channel (psch), the target UE cannot recover a complete layer2 identifier from the MAC header. Therefore, the embodiment of the present application may avoid a situation that the complete layer2 identifier cannot be recovered without the MAC header by directly carrying the complete layer2 identifier of the UE in the second SCI.

In fig. 4, the length of the Wake-up indication (Wake-up indication) bit is 2 bits, and is used to indicate whether the target UE (i.e., the second device) wakes up in the DRX-on duration Timer of the DRX cycle for communication traffic and whether the target UE wakes up in the DRX-on duration Timer of the DRX cycle for positioning traffic, respectively. In the awake case, the target UE (i.e., the second device described above) performs PSCCH detection. Referring to the following table 2, table 2 shows a mapping relationship between values and meanings of the wake-up indicator bits; of course, the values and meanings of the wake up indication bits may have other mapping relationships, which are not listed here. As shown in table 2, when the wakeup indication bit is 11, it indicates that the target UE (i.e., the second device) wakes up for PSCCH detection in the DRX-on duration Timer of the DRX cycle for communication traffic and wakes up for PSCCH detection in the DRX-on duration Timer of the DRX cycle for positioning traffic. When the wakeup indication bit is 00, it indicates that the target UE (i.e., the second device) is sleeping in the DRX-on duration Timer for the DRX cycle of the communication service and sleeping in the DRX-on duration Timer for the DRX cycle of the positioning service. When the awake indication bit is 01, it indicates that the target UE (i.e., the second device) is sleeping in the DRX-on duration Timer for the DRX cycle of the communication service and waking up for PSCCH detection in the DRX-on duration Timer for the DRX cycle of the positioning service. When the wakeup indication bit is 10, it indicates that the target UE (i.e., the second device) wakes up for PSCCH detection in the DRX-on duration Timer for the DRX cycle of the communication service and sleeps in the DRX-on duration Timer for the DRX cycle of the positioning service. It should be understood that, in the embodiment of the present application, specifically, whether "1" or "0" is used to indicate that the wake-up is not limited.

TABLE 2

It should be appreciated that if the wake-up indicator bit indicates that the target UE (i.e., the second device described above) is awake within the DRX-on duration Timer of the DRX cycle used for communication traffic, the source UE (i.e., the first device described above) is also awake during this period. Similarly, if the wake-up indicator indicates that the target UE (i.e., the second device) is awake in the DRX-on duration Timer of the DRX cycle for positioning services, the source UE (i.e., the first device) is also awake during this period. Since the target UE (i.e., the second device) needs to perform PSCCH detection in the awake case, the source UE (i.e., the first device) needs to transmit the PSCCH in the awake case to support PSCCH detection for the target UE. It should also be understood that "awake" and "sleep" mentioned in the embodiments of the present application are for PSCCH detection (or PSCCH blind detection), that is, "awake" mentioned in the embodiments of the present application may be equivalently replaced by "performing PSCCH detection", and "sleep" may be equivalently replaced by "not performing PSCCH detection".

The sleep indication (sleep indication) field (i.e., the third field described above) in fig. 4 exists in the form of a bitmap (bitmap), which is m + n bits in length. m represents the number of carrier elements used for communication services and n represents the number of carrier elements used for location services. At this time, one bit of the sleep indication field corresponds to one carrier unit. One bit of the sleep indication field (i.e. the third field) is used to indicate (in the case of carrier aggregation) whether the target UE (i.e. the second device) wakes up in the carrier unit corresponding to the bit, for example, the bit is 1, which indicates that the target UE (i.e. the second device) wakes up in the carrier unit corresponding to the bit for PSCCH detection, and the bit is 0, which indicates that the target UE (i.e. the second device) is asleep in the carrier unit corresponding to the bit. Optionally, the sleep indication field (i.e. the third field) includes one or more bits, where one bit corresponds to a group of carrier elements, and the group of carrier elements includes one or more carrier elements. At this time, one bit of the sleep indication field (i.e., the third field) indicates whether the target UE (i.e., the second device) wakes up on a set of carrier units corresponding to the bit. Alternatively, the sleep indication field (i.e., the third field described above) includes a plurality of subfields, one subfield including one or more bits, and each subfield corresponding to one or more carrier units. For example, the sleep indication field (i.e., the third field) includes a sleep of communication subfield and a sleep of location subfield, the length of the sleep of communication subfield is equal to the number m of carrier wave units used for communication services, and the sleep of location subfield is equal to the number n of carrier wave units used for location services.

The PSCCH skip indication (PSCCH skip indication) field (i.e. the fourth field) in fig. 4 is used to indicate that the target UE (i.e. the second device) enters a sleep period of the sleep in the DRX-on duration Timer of DRX-C and DRX-P, so as to further save power consumption. The sleep period may be determined by at least two of the following information: starting time, dormancy duration and ending time. Optionally, the sleep duration may be configured semi-statically, or may be indicated by a PSCCH skip indication field; if the sleep duration is configured semi-statically, the start time and/or the end time may be indicated by the PSCCH skip indication field. Illustratively, the PSCCH skip mode indicated by the PSCCH skip indication field may be used to implicitly indicate (or indirectly indicate) a start time and a sleep duration at which the target UE (i.e., the second device described above) goes to sleep in DRX-on duration timers of DRX-C and DRX-P, where one PSCCH skip mode corresponds to one start time and one sleep duration (or, one PSCCH skip mode corresponds to one sleep period).

Optionally, the PSCCH skip indication (PSCCH skip indication) field may include two subfields, one subfield (i.e., the fourth field) for indicating the sleep period in which the target UE (i.e., the second device) enters sleep within the DRX-on duration Timer of DRX-C, and the other subfield (i.e., the fifth field) for indicating the sleep period in which the target UE (i.e., the second device) enters sleep within the duration (or wake-up time) of DRX-P. The sleep period may be determined by at least two of the following information: starting time, dormancy duration and ending time.

The detection period indication (monitoring periodic indication) field (i.e., the sixth field) in fig. 4 is used to indicate the period of PSCCH or first-order SCI (or first-order SCI) detection performed by the target UE (i.e., the second device) to further reduce power consumption.

Optionally, fig. 4 further includes a reserved field for performing subsequent expansion of other functions.

It should be understood that fig. 4 is only a schematic diagram of a format of the second SCI, and the length and the arrangement order of the fields included in the second SCI are not limited in the embodiments of the present application.

Alternatively, the second SCI may be designed separately on a per UE basis, i.e., the second SCI includes only second device-related information. Since the second SCI (or SCI format 2-C) is a newly defined second-order SCI format, the first device needs to indicate the start bit of the second SCI and the size of the second SCI through higher layer parameters before transmitting the second SCI. It should be understood that the second SCI is here designed for one UE, i.e. the second SCI here only includes information of one UE. Thus, the first device transmits Sidelink (SL) Radio Resource Control (RRC) signaling before transmitting the second SCI. In the embodiment of the present application, a configuration parameter (e.g., size SCI-2-C) is newly added in the SL RRC signaling to indicate the start bit of the second SCI and/or the size (i.e., length) of the second SCI. Alternatively, the SL RRC signaling is used to indicate the start bit and the end bit of the second SCI. Alternatively, the SL RRC signaling is used to indicate the end bit of the second SCI and/or the size (i.e., length) of the second SCI.

Optionally, the second SCI may also be designed based on a block, that is, the second SCI includes one or more blocks (blocks), one block is used to indicate information of one UE, and the structure of each block may be as shown in fig. 4, that is, each block of the second SCI includes a source identification field, a target identification field, and a wakeup indication bit, and optionally further includes a sleep indication field, a PSCCH skip indication field, and a detection period indication (one or more of the fields). The SL RRC signaling is used to indicate an end bit of a block of the second SCI related to the second device (i.e., a block where the above-mentioned wakeup indication bit is located) and/or a size (i.e., a length) of the second SCI.

As an alternative embodiment, the wake-up or sleep may be indicated by whether a wake-up indication bit is carried in the second SCI as described above. Illustratively, when the wake-up indication bit is carried in the second SCI, the target UE (i.e., the second device) is instructed to wake up for PSCCH detection in the DRX-on duration Timer of the DRX cycle for communication traffic and wake up for PSCCH detection in the DRX-on duration Timer of the DRX cycle for positioning traffic. And when the second SCI does not carry the wakeup indication bit, indicating the target UE (i.e., the second device) to sleep in the DRX-on duration Timer of the DRX cycle for the communication service and in the DRX-on duration Timer of the DRX cycle for the positioning service.

S103, the second device receives the first SCI.

And S104, the second device receives the second SCI.

Optionally, the second device receives the first SCI, and receives and analyzes the second SCI according to the time-frequency resource indication information of the second SCI and the indication information of the second SCI format included in the first SCI. The second device wakes up or sleeps in the DRX-on duration Timer of the DRX cycle for communication services and wakes up or sleeps in the DRX-on duration Timer of the DRX cycle for positioning services according to the indication of the wake-up indicator bit in the second SCI. If the wake-up indicator in the second SCI indicates that the second device wakes up in the DRX-on duration Timer of the DRX cycle for the communication service, the second device wakes up in the DRX-on duration Timer of the DRX cycle for the communication service and performs PSCCH detection (or blind detection). Similarly, if the wake-up indicator in the two SCIs indicates that the second device wakes up in the DRX-on duration Timer of the DRX cycle for the positioning service, the second device wakes up in the DRX-on duration Timer of the DRX cycle for the positioning service and performs PSCCH detection (or blind detection). Therefore, in this embodiment, the meaning of the wakeup indication bit included in the second SCI may be further understood as: the wake-up indicator bit is used to instruct the second device to wake up for PSCCH detection or sleep in the DRX-on duration Timer for DRX cycles of communication traffic and to wake up for PSCCH detection or sleep in the DRX-on duration Timer for DRX cycles of positioning traffic.

Optionally, the second device receives SL RRC signaling before receiving the second SCI. If the second SCI is individually designed on a per UE basis, the SL RRC signaling is used to indicate a start bit of the second SCI and/or the size (i.e., length) of the second SCI. Alternatively, the SL RRC signaling is used to indicate the start bit and the end bit of the second SCI. Alternatively, the SL RRC signaling is used to indicate the end bit and/or size (i.e., length) of the second SCI. If the second SCI is designed based on block, the SL RRC signaling is used to indicate the start bit and/or size of the block (i.e., the block where the wake-up indication bit is located) of the second SCI related to the second device. Alternatively, the SL RRC signaling is used to indicate the start bit and the end bit of the block related to the second device in the second SCI (i.e., the block where the above-mentioned wakeup indication bit is located). Alternatively, the SL RRC signaling is used to indicate the end bit of the block related to the second device in the second SCI (i.e., the block where the above-mentioned wakeup indication bit is located) and/or the size (i.e., the length) of the second SCI.

Therefore, in the embodiment of the present application, a second-order SCI (i.e., a second SCI) is newly designed to respectively indicate whether a target UE (i.e., a second device) wakes up within the duration of the DRX cycle for the communication service and whether the target UE wakes up within the duration of the DRX cycle for the positioning service, on one hand, SCIs do not need to be separately designed for the communication service and the positioning service, and thus signaling overhead can be reduced; on the other hand, the power consumption can be reduced, and the balance of the power consumption and the communication performance and/or the positioning performance can be realized.

The foregoing describes a technical solution of an embodiment of the present application, and some scenarios applicable to the embodiment of the present application are described below. The embodiments of the present application are mainly applied to a scenario in which DRX-C (i.e., a DRX cycle for communication services) and DRX-P (i.e., a DRX cycle for positioning services) overlap in time, or a scenario in which there is both communication services and positioning services for a period of time (e.g., within one DRX-C). It should be understood that the following descriptions of various scenarios are only examples and are not intended to limit the technical solutions provided in the embodiments of the present application.

Scene 1-1: a scenario where the DRX-on duration Timer of the DRX cycle for communication traffic (denoted DRX-C) and the DRX-on duration Timer of the DRX cycle for positioning traffic (denoted DRX-P) are aligned at the start time. Referring to fig. 5, fig. 5 is a first diagram of a DRX-on duration Timer alignment scenario of DRX-C and DRX-P according to an embodiment of the present disclosure. As shown in fig. 5, DRX for SL-C indicates a DRX cycle for communication traffic in the sidelink system, and DRX for SL-P indicates a DRX cycle for positioning traffic in the sidelink system. Before the first device (i.e., the source UE) indicates the DRX cycle to the second device (i.e., the target UE), a unified wake-up signal (or wake-up indicator) is used to indicate whether the second device wakes up in the DRX-on duration Timer of DRX-C and whether the second device wakes up in the DRX-on duration Timer of DRX-P. Wherein SCI-WUS for DRX-C and DRX-P in FIG. 5 represents SCI-WUS for DRX-C and DRX-P (here SCI-WUS may represent SCI carrying a wake-up signal, such as the second SCI described above). It should be understood that the format of the SCI-WUS is shown in FIG. 4 and will not be described herein. In the embodiment of the present application, the wake-up signal exists in the second SCI in the form of the wake-up indication bit, so that the wake-up signal and the wake-up indication bit can be used alternatively in the embodiment of the present application.

Therefore, in the embodiment of the application, under the condition that the DRX-on duration timers of two DRX cycles are aligned, a unified wake-up signal is used to respectively indicate whether the second device wakes up in the DRX-on duration Timer of the DRX-C and whether the second device wakes up in the DRX-on duration Timer of the DRX-P, so that signaling overhead can be saved, and complexity and power consumption of the terminal can be reduced.

Scenes 1-2: and a positioning service scene exists in the sleep period of the DRX-C. Referring to fig. 6, fig. 6 is a first scenario diagram illustrating a positioning service existing in a sleep period of DRX-C according to an embodiment of the present disclosure. As shown in fig. 6, DRX for SL-C indicates a DRX cycle for communication traffic in the sidelink system, and DRX for SL-P indicates a DRX cycle for positioning traffic in the sidelink system. Before the first device (i.e., the source UE) indicates the DRX cycle to the second device (i.e., the target UE), a unified wake-up signal (or wake-up indicator) is used to indicate whether the second device wakes up in the DRX-on duration Timer of DRX-C and whether the second device wakes up in the DRX-on duration Timer of DRX-P. Wherein, SCI-WUS for DRX-C and DRX-P in FIG. 6 represents SCI-WUS for DRX-C and DRX-P (here, SCI-WUS may represent SCI carrying wake-up signal, such as the second SCI described above). It should be understood that the format of the SCI-WUS is shown in FIG. 4 and will not be described herein.

Scenes 1-3: positioning service exists in DRX-on duration Timer of DRX-C, and a plurality of scenes of DRX-P cycles exist in a time period indicated by one DRX-C cycle. Referring to fig. 7, fig. 7 is a first scenario diagram illustrating a positioning service existing in a DRX-on duration Timer of DRX-C according to an embodiment of the present disclosure. As shown in fig. 7, DRX for SL-C indicates a DRX cycle for communication traffic in the sidelink system, and DRX for SL-P indicates a DRX cycle for positioning traffic in the sidelink system. Before the first device (i.e., the source UE) indicates the DRX cycle to the second device (i.e., the target UE), a unified wake-up signal (or wake-up indicator) is used to indicate whether the second device wakes up in the DRX-on duration Timer of DRX-C and whether the second device wakes up in the DRX-on duration Timer of DRX-P. Wherein, SCI-WUS for DRX-C and DRX-P in FIG. 7 represents SCI-WUS for DRX-C and DRX-P (here, SCI-WUS may represent SCI carrying wake-up signal, such as the second SCI described above).

It should be understood that the SCI-WUS format herein may be as shown in fig. 4, where the length of the wakeup indication bit is 2 bits, and indicates whether the second device wakes up in the DRX-on duration Timer of the next DRX-C and in the DRX-on duration Timer of the next DRX-P, respectively. At this time, the wake-up or sleep of the last two DRX-Ps from left to right of FIG. 7 follows the wake-up or sleep of the first DRX-P. For example, if the wake-up indicator bit indicates that the second device wakes up in the DRX-on duration Timer of the next DRX-P (i.e., the first DRX-P from left to right in fig. 7), the second device also wakes up in the DRX-on duration timers of the second DRX-P and the third DRX-P in fig. 7. If the wake-up indicator bit indicates that the second device is sleeping in the DRX-on duration Timer of the next one (i.e., the first one from left to right in fig. 7) DRX-P, then the second device is also sleeping in the DRX-on duration timers of the second and third DRX-P of fig. 7.

Alternatively, the SCI-WUS format here is still as shown in fig. 4, but the length of the wake-up indicator bit in the SCI-WUS is extended to be greater than or equal to 2 bits, one bit corresponding to one DRX cycle. As shown in fig. 7, the length of the awake indication bit in the SCI-WUS is 4 bits, the first 2 bits may be used to indicate whether the second device wakes up in the DRX-on duration Timer of the next DRX-C and in the DRX-on duration Timer of the next first DRX-P, the 3 rd bit is used to indicate whether the second device wakes up in the DRX-on duration Timer of the next second DRX-P, and the 4 th bit is used to indicate whether the second device wakes up in the DRX-on duration Timer of the next third DRX-P. Therefore, the length of the wakeup indication bit is extended to respectively indicate the wakeup and the sleep in each DRX period, so that the power consumption can be further reduced, the condition that the PSCCH is not detected can be avoided, and the positioning performance is improved.

Example two

The second embodiment of the present application mainly introduces a scheme in which wake-up indications are independently designed for a DRX cycle of a communication service and a DRX cycle of a positioning service in a sidelink system, that is: and designing a wake-up indication for the DRX period of the communication service to indicate wake-up or sleep in the DRX period of the communication service, and designing a wake-up indication for the DRX period of the positioning service to indicate wake-up or sleep in the DRX period of the positioning service.

Referring to fig. 8, fig. 8 is a second schematic flowchart of a wake-up indication method in dual DRX mode according to an embodiment of the present application. As shown in fig. 8, the method for indicating wake-up in dual DRX mode includes, but is not limited to, the following steps:

s201, the first device sends third sidelink control information SCI.

S202, the first device sends a fourth SCI, where the third SCI is used to indicate that the fourth SCI has the second format, and the fourth SCI of the second format includes a first wake-up indicator bit, where the first wake-up indicator bit is used to indicate whether the second device wakes up within a duration timer of a DRX cycle.

Optionally, in this embodiment of the present application, only communication traffic or only positioning traffic may exist between the first device and the second device, and both the first device and the second device enter the dual DRX mode. The first device transmits the third SCI in a broadcast form. The first device then sends the fourth SCI in a multicast or unicast manner within a preset time window. The preset time window may be a power saving offset period one DRX cycle ago. Wherein the third SCI is a first order SCI (1st stage SCI) and the fourth SCI is a second order SCI (2nd stage SCI). The resource indication of the second order SCI (2nd stage SCI) is contained in the first order SCI (1st stage SCI), which is UE specific. In other words, all UEs can resolve the first order SCI to obtain the resource indication of the second order SCI, but a second order SCI can only be resolved by one or a group of specific UEs to obtain the information contained therein. Specifically, the first-order SCI (1st stage SCI) may be used to indicate the format type of the second-order SCI (2nd stage SCI), so the third SCI may be used to indicate the cell of the fourth SCIFormula (format). The second order SCI format field (2nd-stage SCI format field) in the third SCI is k bits in length, k being an integer greater than 2. When the value of the second-order SCI format field is greater than or equal to decimal 2 and less than or equal to 2 ^k -1, indicating that the format of the fourth SCI is the second format. The second format is not any of the existing SCI format 2-A and SCI format 2-B, for example, the fourth SCI format is SCI format 2-C or SCI format 2-D. It should be understood that the names of the fourth SCI format are not limited in the embodiments of the present application, and for the sake of convenience, the fourth SCI format is hereinafter referred to as SCI format 2-C or SCI format 2-D for distinguishing from SCI format 2-a and SCI format 2-B. The second-order SCI (2nd stage SCI) can be used to carry the indication bit of the wake-up signal, so the fourth SCI includes the first wake-up indication bit. The first wake-up indicator bit is used to indicate whether the second device wakes up within a duration Timer (DRX-on duration Timer) of the DRX cycle. Specifically, the first wake-up indication bit is specifically used to indicate whether the second device wakes up within a duration timer of a DRX cycle for the first traffic. The first service may be a communication service or a positioning service.

It should be understood that in this application, the terms "wake-up signal" and "wake-up indicator bit" are used interchangeably. The terms "duration Timer" and "drx-on duration Timer" may also be referred to simply as "duration", and the term "duration" may also be referred to as "wake-up time".

The implementation of the third SCI and the fourth SCI will be described in detail below.

Optionally, similar to the previous embodiment, since the wake-up indication in the sidelink system is UE-specific (UE-specific), the SCI carrying the wake-up indication is also per-UE or UE-specific, so a two-step SCI (two-stage SCI) is required to indicate, where 1st stage SCI (the third SCI as described above) is used to indicate the format type of the 2nd stage SCI, and 2nd stage SCI (the fourth SCI as described above) is used to carry the indication bit of the wake-up signal. And because the 2nd stage SCI in the 3GPP sidelink system only has two formats of SCI format 2-A and SCI format 2-B, and both SCI format 2-A and SCI format 2-B are scheduling information for communication services. Therefore, in the embodiment of the present application, the 2nd SCI format type is first extended, and a new 2nd SCI format is introduced to carry the wakeup indication bit.

Specifically, the length of the conventional second-order SCI format field (2nd-stage SCI format field) is 2 bits, and the embodiment of the present application performs a function extension on the second-order SCI format field to extend the second-order SCI format field to k bits, where k is an integer greater than 2, for example, k is equal to 3. If said first service is a communication service, the format of said fourth SCI (i.e. said second format) is a new format; if the first service is a location service, the format of the fourth SCI (i.e., the second format) is another new format. For example, when the first service is a communication service, the format of the fourth SCI (i.e., the second format) is SCI format 2-C; when the first service is a location service, the format of the fourth SCI (i.e., the second format) is SCI format 2-D. Therefore, for different services, two second-order SCI formats are required to be introduced to respectively carry the wakeup indication bits of different services.

See table 3 below, where table 3 shows the values and meanings of the 2nd-stage SCI format field in 1st stage SCI, where k is 3. As shown in table 3 below, when the second-order SCI format field takes a value of 000, it indicates that the second-order SCI format is SCI format 2-a; when the value of the second-order SCI format field is 001, the second-order SCI format is SCI format 2-B; when the value of the second-order SCI format field is 010, the second-order SCI format is SCI format 2-C; when the value of the second-order SCI format field is 011, the second-order SCI format is SCI format 2-D; when the second-order SCI format field takes on other values (e.g., 100, 101, 110, 111), it indicates reservation or is used as other functional extensions, for example, a new 2nd stage SCI format is introduced to indicate positioning scheduling, measurement, and the like, which is not illustrated in the embodiments of the present application. For convenience of description, the second-order SCI designed for communication service in SCI format 2-C and the second-order SCI designed for positioning service in SCI format 2-D are used as examples in the embodiments of the present invention. It should be understood that when the second-order SCI format field is 011, it indicates that the second-order SCI format is SCI format 2-C; when the second-order SCI format field takes a value of 010, it indicates that the second-order SCI format is SCI format 2-D, and this is not limited in this embodiment of the present application.

TABLE 3

Optionally, the fourth SCI has a format of SCI format 2-C or SCI format 2-D, and the fourth SCI includes a first wake-up indicator bit, a first field, and a second field. If the fourth SCI has the SCI format 2-C, the first wake-up indicator bit is used to indicate whether the second device wakes up within a DRX-on duration Timer of a DRX cycle for traffic. If the fourth SCI has the SCI format 2-D, the first wake-up indicator bit is used to indicate whether the second device wakes up within a DRX-on duration Timer of a DRX cycle for positioning services. The first field is used to indicate the identity of the first device, which is the full Layer2 identity (full Layer2-ID) of the first device, represented by 24 bits. The second field is used to indicate the identity of the second device, which is a full Layer2 identity (full Layer2-ID) of the second device, also represented with 24 bits. The first field may be referred to as a source identification field, the second field may be referred to as a target identification field, and it should be understood that the first field and the second field may also have other names, which is not limited in this embodiment of the present application.

Optionally, the fourth SCI further includes one or more of the following fields: a third field, a fourth field, and a sixth field. The third field includes one or more bits, each bit corresponding to one or more carrier elements (CCs). The third field is used to indicate whether the second device wakes up on one or more carrier units corresponding to each bit included in the third field. The length of the third field may be equal to the number of carrier units used for the first service. The fourth field is used to indicate a start time and a sleep duration at which the second device goes to sleep within a DRX-on duration Timer of a DRX cycle for the first traffic. The sixth field is used to indicate a period for PSCCH or third SCI detection by the second device. The third field may be referred to as a sleep indication field, the fourth field may be referred to as a PSCCH skip indication field, and the sixth field may be referred to as a detection period indication field; it should be understood that the third field, the fourth field, and the sixth field may also have other names, and the embodiments of the present application are not limited thereto.

Referring to FIG. 9, FIG. 9 is a schematic diagram of the format of SCI format 2-C and SCI format 2-D provided in the present application. As shown in fig. 9, each of the SCI format 2-C and SCI format 2-D is similar and includes a source identification (source ID) field, a destination identification (destination ID) field, and a Wake-up indication (Wake-up indication) bit, and optionally includes one or more of a sleep indication (sleep indication) field, a PSCCH skip indication (PSCCH skip indication) field, and a detection period indication (monitoring period indication) field.

The source ID field (i.e., the first field) and the destination ID field (i.e., the second field) are described with reference to fig. 4, and are not described herein again.

In fig. 9, the length of a Wake-up indication (Wake-up indication) bit (i.e., the first Wake-up indication bit) is 1 bit, and is used to indicate whether the target UE (i.e., the second device) wakes up in the DRX-on duration Timer of the DRX cycle for the first service. In the awake case, the target UE (i.e., the second device described above) performs PSCCH detection. When the awake indicator (i.e., the first awake indicator) is 0, it indicates that the target UE (i.e., the second device) is sleeping in the DRX-on duration Timer for the DRX cycle of the first service. When the wakeup indication bit (i.e., the first wakeup indication bit) is 1, it indicates that the target UE (i.e., the second device) wakes up within the DRX-on duration Timer of the DRX cycle for the first service to perform PSCCH detection. Of course, it may also be indicated as wake-up when the wake-up indicator bit (i.e. the first wake-up indicator bit) is 0; when the wake-up indicator bit (i.e., the first wake-up indicator bit) is 1, it indicates sleep, and the corresponding relationship between the value and the meaning of the wake-up indicator bit (i.e., the first wake-up indicator bit) is not limited in the embodiment of the present application. Illustratively, if the format of the fourth SCI is SCI format 2-C, a first wake-up indicator bit in the fourth SCI is used to indicate whether the target UE (i.e., the second device) wakes up within a DRX-on duration Timer of a DRX cycle used for communication services; if the format of the fourth SCI is SCI format 2-D, a first wake-up indicator bit in the fourth SCI is used to indicate whether a target UE (i.e., the second device) wakes up in a DRX-on duration Timer of a DRX cycle used for positioning services.

It should be understood that if the wake-up indicator bit in fig. 9 (i.e., the first wake-up indicator bit) indicates that the target UE (i.e., the second device) wakes up within the DRX-on duration Timer of the DRX cycle for the first service, the source UE (i.e., the first device) is also awake during this period. Since the target UE (i.e., the second device) needs to perform PSCCH detection in the awake case, the source UE (i.e., the first device) needs to transmit the PSCCH in the awake case to support PSCCH detection for the target UE. It should also be understood that "awake" and "sleep" mentioned in the embodiments of the present application are for PSCCH detection (or PSCCH blind detection), that is, "awake" mentioned in the embodiments of the present application may be equivalently replaced by "performing PSCCH detection", and "sleep" may be equivalently replaced by "not performing PSCCH detection".

The sleep indication (sleep indication) field (i.e., the above-mentioned third field) in fig. 9 exists in the form of a bitmap (bitmap), which is m or n bits in length. m represents the number of carrier elements used for communication services and n represents the number of carrier elements used for location services. At this time, one bit of the sleep indication field corresponds to one carrier unit. A bit of the sleep indication field (i.e. the third field) is used to indicate (in the case of carrier aggregation) whether the target UE (i.e. the second device) wakes up on the carrier unit corresponding to the bit, for example, the bit is 1, which indicates that the target UE (i.e. the second device) wakes up on the carrier unit corresponding to the bit for PSCCH detection, and the bit is 0, which indicates that the target UE (i.e. the second device) sleeps on the carrier unit corresponding to the bit. Optionally, the sleep indication field (i.e. the third field) includes one or more bits, where one bit corresponds to a group of carrier elements, and the group of carrier elements includes one or more carrier elements. At this time, one bit of the sleep indication field (i.e., the third field) indicates whether the target UE (i.e., the second device) wakes up on a set of carrier units corresponding to the bit.

A PSCCH skipping indication (PSCCH skipping indication) field (i.e., the fourth field described above) in fig. 9 is used to indicate a sleep period during which the target UE (i.e., the second device described above) goes to sleep within the drx-on duration Timer for the first service, so as to further save power consumption. The sleep period may be determined by at least two of the following information: starting time, dormancy duration and ending time. Optionally, the sleep duration may be configured semi-statically, or may be indicated by a PSCCH skip indication field; if the sleep duration is configured semi-statically, the start time and/or the end time may be indicated by the PSCCH skip indication field. Illustratively, the PSCCH skip mode indicated by the PSCCH skip indication field may be used to implicitly indicate (or indirectly indicate) a start time and a sleep duration for the target UE (i.e., the second device) to go to sleep in the DRX-on duration Timer of DRX-C and DRX-P, where one PSCCH skip mode corresponds to one start time and one sleep duration (or one PSCCH skip mode corresponds to one sleep period).

The detection period indication (monitoring periodic indication) field (i.e., the sixth field) in fig. 9 is used to indicate the period of PSCCH or third-order SCI (or first-order SCI) detection performed by the target UE (i.e., the second device) to further reduce power consumption.

Optionally, fig. 9 further includes a reserved field for performing subsequent expansion of other functions.

It should be understood that fig. 9 is only a schematic diagram of a format of SCI format 2-C and SCI format 2-D, and the lengths and the arrangement order of the fields included in the SCI format 2-C and SCI format 2-D are not limited in the embodiments of the present application.

Alternatively, the fourth SCI may be designed separately on a per UE basis, i.e., the fourth SCI includes only second device related information. Since the fourth SCI (or SCI format 2-C, or SCI format 2-D) is a newly defined second-order SCI format, the first device needs to indicate the start bit of the fourth SCI and the size of the fourth SCI through higher-layer parameters before sending the third SCI. Specifically, the first device sends the first SL RRC signaling before sending the fourth SCI. The first SL RRC indicates the start bit of the fourth SCI and/or the size (i.e., length) of the fourth SCI. Alternatively, the first SL RRC signaling is used to indicate the start bit and the end bit of the fourth SCI. Alternatively, the first SL RRC signaling is used to indicate an end bit of the fourth SCI and/or a size (i.e., length) of the fourth SCI.

Optionally, the fourth SCI may also be designed based on a block, that is, the fourth SCI includes one or more blocks (blocks), one block is used to indicate information of one UE, and a structure of each block may be as shown in fig. 9, that is, each block of the fourth SCI includes a source identification field, a target identification field, and a wakeup indication bit, and optionally further includes one or more of a sleep indication field, a PSCCH skip indication field, and a detection period indication field. Thus, the first device sends the first SL RRC signaling before sending the fourth SCI. The first SL RRC signaling is used to indicate the start bit and/or size of the block (i.e. the block where the first wake-up indication bit is located) in the fourth SCI related to the second device. Alternatively, the first SL RRC signaling is used to indicate a start bit and an end bit of a block (i.e., a block where the first wake-up indication bit is located) associated with the second device in the fourth SCI. Alternatively, the first SL RRC signaling is used to indicate an end bit of a block (i.e., a block where the first wake-up indication bit is located) associated with the second device in the fourth SCI and/or a size (i.e., a length) of the fourth SCI.

As an alternative embodiment, the wakeup or sleep may be indicated by whether the first wakeup indication bit is carried in the fourth SCI described above. Illustratively, when the first wake-up indication bit is carried in the fourth SCI, the target UE (i.e., the second device) is instructed to wake up for PSCCH detection within the duration of the DRX cycle (or wake-up time) for the first service. When the fourth SCI does not carry the first wake-up indicator bit, the target UE (i.e., the second device) is instructed to sleep for the duration (or wake-up time) of the DRX cycle for the first service.

S203, the second device receives the third SCI.

S204, the second device receives the fourth SCI.

Optionally, the second device receives the third SCI, and receives and parses the fourth SCI according to the time-frequency resource indication information of the fourth SCI and the format indication information of the fourth SCI, which are included in the third SCI. The second device wakes up or sleeps in the DRX-on duration Timer of the DRX cycle for the first service according to the indication of the first wake-up indication bit in the fourth SCI. If the first wake-up indicator in the second SCI indicates that the second device wakes up in the DRX-on duration Timer of the DRX cycle for the first service, the second device wakes up in the DRX-on duration Timer of the DRX cycle for the first service and performs PSCCH detection (or blind detection). Therefore, the meaning of the first wake-up indication bit included in the fourth SCI in the embodiment of the present application can be further understood as: the first wake-up indication bit is used for indicating the second device to wake up in a DRX-on duration Timer of a DRX cycle for the first service for PSCCH detection or sleep.

Optionally, the second device receives the first SL RRC signaling before receiving the fourth SCI. If the fourth SCI is individually designed on a per UE basis, the first SL RRC indicates a start bit of the fourth SCI and a size (i.e., length) of the fourth SCI. Alternatively, the first SL RRC signaling is used to indicate the start bit and the end bit of the fourth SCI. Alternatively, the first SL RRC signaling is used to indicate the end bit of the fourth SCI and/or the size (i.e., length) of the fourth SCI. If the fourth SCI is designed based on block, the first SL RRC signaling is used to indicate the start bit and/or size of the block (i.e., the block where the first wakeup indication bit is located) of the fourth SCI related to the second device. Alternatively, the first SL RRC signaling is used to indicate the start bit and the end bit of the block related to the second device in the fourth SCI (i.e. the block where the first wakeup indication bit is located). Alternatively, the first SL RRC signaling is used to indicate an end bit of a block (i.e., a block where the first wake-up indication bit is located) related to the second device in the fourth SCI and/or a size (i.e., a length) of the fourth SCI.

Therefore, in the embodiment of the application, a second-order SCI is newly designed for the DRX cycle of the communication service and the DRX cycle of the positioning service respectively to indicate whether the target UE (i.e., the second device) wakes up in each cycle, so that the meaning is clear, the wake-up indications in the DRX cycles of the two services are not interfered with each other, and the flexibility is high.

Optionally, the method for indicating wake-up in dual DRX mode further includes the following steps:

s205, the first device transmits the fifth SCI.

S206, the first device sends a sixth SCI, where the fifth SCI is used to indicate that a format of the sixth SCI is a third format, and the fifth SCI of the third format includes a second wake-up indicator bit, where the second wake-up indicator bit is used to indicate whether the second device wakes up within a duration timer of a DRX cycle for a second service.

Optionally, in this embodiment of the application, when there is both a communication service and a positioning service between the first device and the second device, the first device further sends the fifth SCI in a broadcast form. And the first device sends the sixth SCI in a multicast or unicast mode within a preset time window. The preset time window may be a Power saving offset period before one DRX cycle. Wherein the fifth SCI is a first order SCI (1st stage SCI) and the sixth SCI is a second order SCI (2nd stage SCI). The fifth SCI may be used to indicate a format (format) of the sixth SCI. The second-order SCI format field (2nd-stage SCI format field) in the fifth SCI has a length of k bits, k being an integer greater than 2. When the value of the second-order SCI format field in the fifth SCI is different from the value of the second-order SCI format field in the third SCI, and the value of the second-order SCI format field in the fifth SCI is greater than or equal to decimal 2 and less than or equal to decimal 2 ^k -1, indicating that the format of the sixth SCI is the third format. The third format is neither any of the existing SCI format 2-A and SCI format 2-B nor the above-described second format. The sixth SCI includes a second wake-up indication bit. The second wake-up indication bit is used to indicate whether the second device wakes up within a duration Timer (DRX-on Timer) of a DRX cycle for the second traffic. Wherein the second service is two different services from the first service. If the format of the fourth SCI (i.e., the second format) is SCI format 2-C, the format of the sixth SCI (i.e., the third format)Is SCI format 2-D, the first service may be a communication service, and the second service may be a positioning service. If the format of the fourth SCI is SCI format 2-D and the format of the sixth SCI is SCI format 2-C, the first service may be a location service and the second service may be a communication service.

Optionally, the implementation of the fifth SCI may refer to the implementation of the third SCI, and details are not described here. The fifth SCI is different from the third SCI in that: the value of the second order SCI format field in the fifth SCI is different from the value of the second order SCI format field in the third SCI. For example, as shown in the foregoing table 3, the second-order SCI format field in the third SCI takes a value of 010, which indicates that the format of the fourth SCI is SCI format 2-C or the fourth SCI includes the first wake-up indicator bit; the second-order SCI format field in the fifth SCI is 011, indicating that the sixth SCI has the SCI from 2-D or includes the second wakeup indicator bit in the sixth SCI. The above sixth SCI implementation may refer to the fourth SCI implementation, with the following differences: the sixth SCI and the fourth SCI are not in the same format, and the sixth SCI and the fourth SCI include wakeup indication bits having different meanings. Illustratively, the format of the fourth SCI is SCI format 2-C, and the first wake-up indication bit included in the fourth SCI is used to indicate whether the target UE (i.e., the second device) wakes up for the duration of the DRX cycle (or wake-up time) for the communication service; the format of the sixth SCI is SCI format 2-D, and the second wake-up indicator bit included in the sixth SCI is used to indicate whether the target UE (i.e., the second device) wakes up within the DRX-on duration Timer of the DRX cycle used for the positioning service. Or the fourth SCI has a format of SCI format 2-D, where a first wake-up indicator bit included in the fourth SCI is used to indicate whether a target UE (i.e., the second device) wakes up within a DRX-on duration Timer of a DRX cycle used for positioning services; the sixth SCI has a format of SCI format 2-C, and a second wake-up indicator bit included in the sixth SCI is used to indicate whether a target UE (i.e., a second device) wakes up within a DRX-on duration Timer of a DRX cycle used for communication services.

Alternatively, the sixth SCI may be designed separately on a per UE basis, i.e., the sixth SCI includes only second device related information. Since the sixth SCI (i.e., SCI format 2-C or SCI format 2-D) is also a newly defined second-order SCI format, the first device needs to indicate the size and/or start bit of the sixth SCI through a higher-layer parameter before transmitting the fifth SCI. Specifically, the first device sends the second SL RRC signaling before sending the fifth SCI. The second SL RRC indicates the start bit of the sixth SCI and/or the size (i.e., length) of the sixth SCI. Alternatively, the second SL RRC signaling is used to indicate the start bit and the end bit of the sixth SCI. Alternatively, the second SL RRC signaling is used to indicate the end bit of the sixth SCI and/or the size (i.e., length) of the sixth SCI.

Optionally, the sixth SCI may also be designed based on a block, that is, the sixth SCI includes one or more blocks (blocks), one block is used to indicate information of one UE, and the structure of each block may be as shown in fig. 9, that is, each block of the sixth SCI includes a source identification field, a target identification field, and a wakeup indication bit, and optionally further includes a sleep indication field, a PSCCH skip indication field, and a detection period indication (one or more of the fields, therefore, the first device sends a second SL RRC signaling before sending the sixth SCI, the second SL RRC signaling is used to indicate a start bit and/or a size of a block (i.e., a block where the second wakeup indication bit is located) in the sixth SCI, which is related to the second device, or the second SL RRC signaling is used to indicate a start bit and an end bit or a start bit of a block (i.e., a block where the second wakeup indication bit is located) in the sixth SCI, the second SL RRC signaling is used to indicate an end bit of a block of the sixth SCI related to the second device (i.e., a block where the second wakeup indication bit is located) and/or a size (i.e., a length) of the sixth SCI.

As an alternative embodiment, the wake-up or sleep may be indicated by whether the second wake-up indication bit is carried in the above-mentioned sixth SCI. Illustratively, when the sixth SCI carries the second wake-up indication bit, the target UE (i.e., the second device) is instructed to wake up for PSCCH detection within the duration of the DRX cycle (or wake-up time) for the second service. And when the sixth SCI does not carry the second wake-up indication bit, indicating the target UE (i.e., the second device) to sleep for the duration (or wake-up time) of the DRX cycle for the second service.

It should be understood that the order of execution between steps S203-S204 and steps S205-S206 is not limiting. For example, steps S203-S204 are performed before steps S205-S206, or steps S203-S204 are performed after steps S205-S206, or steps S203-S204 are performed simultaneously/in parallel with steps S205-S206.

S207, the second device receives the fifth SCI.

S208, the second device receives the sixth SCI.

Optionally, the second device receives the fifth SCI, and receives and parses the sixth SCI according to the time-frequency resource indication of the sixth SCI and the format indication information of the sixth SCI, which are included in the fifth SCI. The second device then wakes up or sleeps within an on _ duration Timer (on _ duration Timer) of the DRX cycle for the second service according to the indication of the second wake-up indicator bit in the sixth SCI. Wherein, if the second wake-up indication bit in the sixth SCI indicates that the second device wakes up within the duration (or wake-up time) of the DRX cycle for the second service, the second device wakes up within the duration (or wake-up time) of the DRX cycle for the second service and performs PSCCH detection (or blind detection). Therefore, the meaning of the second wake-up indication bit included in the sixth SCI in the embodiment of the present application can be further understood as: the second wake indication bit is used to instruct the second device to wake up for PSCCH detection or sleep for the duration of the DRX cycle (or wake-up time) for the second traffic.

Optionally, the second device receives the second SL RRC signaling before receiving the sixth SCI. If the sixth SCI is designed separately on a per UE basis, the second SL RRC indicates the start bit of the sixth SCI and/or the size (i.e., length) of the sixth SCI. Alternatively, the second SL RRC signaling is used to indicate the start bit and the end bit of the sixth SCI. Alternatively, the second SL RRC signaling is used to indicate the end bit of the sixth SCI and/or the size (i.e., length) of the sixth SCI. If the sixth SCI is designed based on block, the first SL RRC signaling is used to indicate a start bit and/or a size of a block (i.e., a block where the second wakeup indication bit is located) of the sixth SCI related to the second device. Alternatively, the first SL RRC signaling is used to indicate a start bit and an end bit of a block (i.e., a block where the second wake-up indication bit is located) associated with the second device in the sixth SCI. Alternatively, the first SL RRC signaling is used to indicate an end bit of a block (i.e., a block where the second wakeup indication bit is located) in the sixth SCI related to the second device and/or a size (i.e., a length) of the sixth SCI.

The foregoing describes the technical solutions of the embodiments of the present application, and for convenience of understanding, some scenes to which the embodiments of the present application are applicable are described below. The embodiments of the present application can be applied to a scenario where DRX-C (i.e., DRX cycle for communication service) and DRX-P (i.e., DRX cycle for positioning service) overlap in time, or a scenario where DRX-C and DRX-P do not overlap in time, that is, a scenario where only communication service or positioning service exists in a period of time, for example, only communication service exists in one DRX-C and only positioning service exists in one DRX-P. It should be understood that the following descriptions of various scenarios are only examples and are not intended to limit the technical solutions provided in the embodiments of the present application.

Scene 2-1: and a positioning service scene exists in the sleep period of the DRX-C. Referring to fig. 10, fig. 10 is a second scenario illustrating a positioning service existing in a sleep period of DRX-C according to an embodiment of the present disclosure. As shown in fig. 10, DRX for SL-C indicates a DRX cycle for communication traffic in the sidelink system, and DRX for SL-P indicates a DRX cycle for positioning traffic in the sidelink system. Before a first device (i.e., a source UE) indicates a DRX cycle to a second device (i.e., a target UE), two SCIs are transmitted to indicate whether the second device wakes up within a DRX-on duration Timer of DRX-C and whether the second device wakes up within the DRX-on duration Timer of DRX-P, respectively. The SCI-WUS for DRX-C in FIG. 10 indicates the SCI-WUS of DRX-C to indicate whether the target UE (i.e., the second device) wakes up within the DRX-on duration Timer of the DRX cycle for communication traffic; the SCI-WUS for DRX-P indicates the SCI-WUS of the DRX-P to indicate whether the target UE (i.e., the second device) wakes up within the DRX-on duration Timer of the DRX cycle used for location services.

Scene 2-2: the DRX-C and the DRX-P do not have overlapping scenes in time, namely the DRX-C and the DRX-P are in series in time. Referring to fig. 11, fig. 11 is a schematic view of a scenario that DRX-C and DRX-P do not overlap in time according to an embodiment of the present disclosure. As shown in fig. 11, DRX for SL-C indicates a DRX cycle for communication traffic in the sidelink system, and DRX for SL-P indicates a DRX cycle for positioning traffic in the sidelink system. Before a first device (i.e., a source UE) indicates DRX-C to a second device (i.e., a target UE), an SCI is sent to indicate whether the second device wakes up within the DRX-on duration Timer of DRX-C. Before the first device (i.e., the source UE) indicates DRX-P to the second device (i.e., the target UE), another SCI is sent to indicate whether the second device wakes up within the DRX-on duration Timer of DRX-P. The SCI-WUS for DRX-C in FIG. 11 indicates the SCI-WUS of DRX-C to indicate whether the target UE (i.e., the second device) wakes up within the DRX-on duration Timer of the DRX cycle for communication traffic; the SCI-WUS for DRX-P indicates the SCI-WUS of the DRX-P to indicate whether the target UE (i.e., the second device) wakes up within the DRX-on duration Timer of the DRX cycle used for the location service.

Scene 2-3: positioning service exists in the on _ duration Timer of the DRX-C, and a plurality of scenes of DRX-P cycles exist in the time period indicated by one DRX-C cycle. Referring to fig. 12, fig. 12 is a second scenario illustrating a positioning service existing in a DRX-on duration Timer of a DRX-P according to an embodiment of the present disclosure. As shown in fig. 12, DRX for SL-C indicates a DRX cycle for communication traffic in the sidelink system, and DRX for SL-P indicates a DRX cycle for positioning traffic in the sidelink system. Before a first device (i.e., a source UE) indicates DRX-C to a second device (i.e., a target UE), an SCI is transmitted to indicate whether the second device wakes up in the DRX-on duration Timer of the next DRX-C. Before the first device (i.e., the source UE) indicates the DRX-P to the second device (i.e., the target UE) each time, another SCI is sent to indicate whether the second device wakes up in the DRX-on duration Timer of the next DRX-P. The SCI-WUS for DRX-C in FIG. 12 indicates the SCI-WUS of DRX-C to indicate whether the target UE (i.e., the second device) wakes up within the DRX-on duration Timer of the DRX cycle for communication traffic; the SCI-WUS for DRX-P indicates the SCI-WUS of the DRX-P to indicate whether the target UE (i.e., the second device) wakes up within the DRX-on duration Timer of the DRX cycle used for the location service.

Scenes 2-4: DRX-C and the on _ duration Timer of DRX-P are aligned at the starting time. Referring to fig. 13, fig. 13 is a diagram illustrating a second scenario of on _ duration Timer alignment for DRX-C and DRX-P according to an embodiment of the present disclosure. As shown in fig. 13, DRX for SL-C indicates a DRX cycle for communication traffic in the sidelink system, and DRX for SL-P indicates a DRX cycle for positioning traffic in the sidelink system. Before a first device (i.e., a source UE) indicates a DRX cycle to a second device (i.e., a target UE), two SCIs are transmitted to indicate whether the second device wakes up within a DRX-on duration Timer of DRX-C and whether the second device wakes up within the DRX-on duration Timer of DRX-P, respectively. The SCI-WUS for DRX-C in FIG. 13 indicates the SCI-WUS of DRX-C to indicate whether the target UE (i.e., the second device) wakes up within the DRX-on duration Timer of the DRX cycle for communication traffic; the SCI-WUS for DRX-P indicates the SCI-WUS of the DRX-P to indicate whether the target UE (i.e., the second device) wakes up within the DRX-on duration Timer of the DRX cycle used for the location service.

Therefore, in the sidelink system, a new second-order SCI (i.e., a fourth SCI and a sixth SCI) is designed for the DRX cycle of the communication service and the DRX cycle of the positioning service respectively to indicate whether the DRX-on duration timers of the respective DRX cycles are awake or not, so that the method has the advantages of clear meaning and high flexibility, and is applicable to various scenes; on the other hand, the power consumption can be reduced, and the balance of the power consumption and the communication performance and/or the positioning performance can be realized.

EXAMPLE III

In the third embodiment of the present application, a scheme is mainly introduced that, in a cellular system, when a communication service and a positioning service exist at the same time within a period of time, a wake-up indication is uniformly designed for a DRX cycle of the communication service and a DRX cycle of the positioning service, that is, a wake-up signal is used to respectively indicate wake-up or sleep in the DRX cycles of the two services.

Referring to fig. 14, fig. 14 is a third schematic flowchart of a wake-up indication method in dual DRX mode according to an embodiment of the present application. As shown in fig. 14, the method for indicating wake-up in dual DRX mode includes, but is not limited to, the following steps:

s301, the network device sends Downlink Control Information (DCI), where the DCI includes a wake-up indicator bit, and the wake-up indicator bit is used to indicate whether the terminal device wakes up in a duration timer of a DRX cycle for a communication service and whether the terminal device wakes up in a duration timer of a DRX cycle for a positioning service.

Optionally, in this embodiment of the present application, a communication service and a positioning service exist between the network device and the terminal device at the same time, and both the network device and the terminal device enter the dual DRX mode. The network device sends the DCI within a preset time window, which may be a Power saving offset period before one DRX cycle. The format of the DCI is a format of DCI used in the NR system to indicate whether a terminal device wakes up within a duration timer of a DRX cycle of a communication service, that is, the format of the DCI is conventional DCI format 2-6. Alternatively, the format of the DCI may also be a newly designed DCI format, such as DCI format 2-7 or DCI format 2-8. Since the conventional DCI format 2-6 is designed based on block (block), one block corresponds to one UE, and when specifically indicated, the network device tells each UE the start bit of the DCI format 2-6 that should be read through RRC high-layer signaling (e.g., Position DCI2-6), and tells each UE the size of its corresponding block through RRC high-layer signaling (e.g., SizeDCI 2-6). Therefore, the DCI in the embodiment of the present application also follows the block design. Each block of the DCI includes a wake-up indicator bit for indicating whether the terminal device wakes up within a duration Timer (on _ duration Timer) of a DRX cycle for communication traffic and whether it wakes up within a duration Timer of a DRX cycle for positioning traffic.

It should be understood that in the present application, the terms "duration Timer" and "drx-on duration Timer" may also be referred to simply as "duration" and the term "duration" may also be described as "wake-up time".

Optionally, the DCI further includes a first indication bit, where the first indication bit includes one or more bits. The first indication bit is used for indicating whether the terminal equipment wakes up on the secondary cell corresponding to each bit included in the first indication bit. The length of the first indicator bit is p bits, and p is equal to the number of the secondary cells or the number of the secondary cell groups used for positioning service. That is, one bit of the first indicator bit corresponds to one secondary cell or one secondary cell group. It should be understood that the first indication bit may be referred to as a sleep indication bit, and the first indication bit may also have other names, which is not limited in the embodiments of the present application.

Referring to fig. 15, fig. 15 is a schematic diagram of a format of DCI provided in an embodiment of the present application. Fig. 15 is obtained by performing function extension on the conventional DCI format 2-6, so that the DCI format 2-6 after function extension can indicate whether the terminal device wakes up in the DRX-on duration Timer of the DRX cycle for communication service, and can also indicate whether the terminal device wakes up in the DRX-on duration Timer of the DRX cycle for positioning service. In the wake-up case, the terminal device performs Physical Downlink Control Channel (PDCCH) detection. Fig. 15 is a diagram illustrating an instruction in one block (block) of DCI format 2-6. As shown in fig. 15, there are a total of (2+ c + p) (c and p are both integers greater than or equal to 0) indicator bits in one Block, where the indicator bits for the DRX cycles of the communication traffic are 1+ c, and the indicator bits for the DRX cycles of the positioning traffic are 1+ p. It should be understood that, in fig. 15, 1+ c bits are indication bits of the conventional DCI format 2-6, where 1 bit is a wake-up indication bit of a communication for indicating whether a terminal device wakes up within a DRX-on duration Timer of a DRX cycle for communication traffic, and each of c (for example, c ═ 0,1,2,3,4,5) bits is used to indicate whether the terminal device wakes up on a secondary cell corresponding to the bit. In fig. 15, 1+ p bits are indication bits newly added in the DCI format 2-6, where 1 bit is a positioning wake-up indication bit for indicating whether the terminal device wakes up in the DRX-on duration Timer of the DRX cycle used for the positioning service, for example, the bit is 1, which indicates that the terminal device wakes up in the DRX-on duration Timer of the DRX cycle used for the positioning service to perform PDCCH detection or blind detection; the bit is 0, which indicates that the terminal device sleeps in the DRX-on duration Timer of the DRX cycle for the positioning service; or vice versa. Each of p (p is a positive integer) bits (i.e. the first indicator bit) is used to indicate whether the terminal device wakes up on the secondary cell corresponding to the bit. In other words, fig. 15 indicates whether the terminal device wakes up within the DRX-on duration Timer of the DRX cycle for the communication traffic and whether it wakes up within the DRX-on duration Timer of the DRX cycle for the positioning traffic, respectively, through 2 consecutive (continuous when c is 0) or discontinuous (discontinuous when c is greater than 0) (i.e., the above-mentioned wake-up indication bits).

It should be appreciated that if the wake-up indicator bit indicates that the terminal device is awake within the DRX-on duration Timer of the DRX cycle for traffic, the network device is also awake during this period. Similarly, if the wake-up indicator bit indicates that the terminal device is awake in the DRX-on duration Timer of the DRX cycle used for the positioning service, the network device is also awake during this period. Since the terminal device needs to perform PDCCH detection in the wake-up case, the network device needs to transmit PDCCH in the wake-up case to support PDCCH detection of the terminal device. It should also be understood that "awake" and "sleep" mentioned in the embodiments of the present application are for PDCCH detection (or PDCCH blind detection), that is, "awake" mentioned in the embodiments of the present application may be equivalently replaced by "performing PDCCH detection", and "sleep" may be equivalently replaced by "not performing PDCCH detection".

S302, the terminal equipment receives the DCI.

Optionally, the terminal device receives the DCI, parses the DCI, and wakes up or sleeps in the duration Timer (on _ duration Timer) of the DRX cycle for the communication service according to the indication of the wake-up indication bit in the DCI, and wakes up or sleeps in the duration Timer of the DRX cycle for the positioning service. If the wake-up indicator bit in the DCI indicates that the terminal device wakes up in the DRX-on duration Timer of the DRX cycle used for the communication service, the terminal device wakes up in the DRX-on duration Timer of the DRX cycle used for the communication service and performs PDCCH detection (or blind detection). Similarly, if the wake-up indicator in the DCI indicates that the terminal device wakes up in the DRX-on duration Timer of the DRX cycle for the positioning service, the terminal device wakes up in the DRX-on duration Timer of the DRX cycle for the positioning service and performs PDCCH detection (or blind detection). Therefore, the meaning of the wake-up indication bit included in the DCI in the embodiment of the present application may also be understood as: the wake-up indicator is used for indicating the terminal device to wake up in a DRX-on duration Timer of a DRX cycle for communication traffic to perform PDCCH detection or sleep, and to wake up in the DRX-on duration Timer of the DRX cycle for positioning traffic to perform PDCCH detection or sleep.

Optionally, the technical solution provided in the embodiment of the present application may be applicable to the scenarios 1-1, 1-2, and 1-3 in the foregoing first embodiment, wherein the sidelink systems in the scenarios 1-1, 1-2, and 1-3 should be replaced by a cellular system, and the SCI should be replaced by DCI.

Therefore, the function of the conventional DCI fromat 2-6 is expanded, so that the terminal equipment can be indicated whether to wake up in the DRX-on duration Timer of the DRX period for the communication service and whether to wake up in the DRX-on duration Timer of the DRX period for the positioning service at the same time, on one hand, DCI does not need to be designed for the communication service and the positioning service separately, and the signaling overhead can be reduced; on the other hand, the wakening dormant indication of communication and/or positioning service can be carried out simultaneously to realize the balance of power consumption and communication performance and/or positioning performance.

Example four

The fourth embodiment of the present application mainly introduces a scheme for independently designing an awake indication for a DRX cycle of a positioning service in a cellular system.

Referring to fig. 16, fig. 16 is a fourth schematic flowchart of a wake-up indication method in dual DRX mode according to an embodiment of the present application. As shown in fig. 16, the method for indicating wakeup in dual DRX mode includes, but is not limited to, the following steps:

s401, the network device sends a first downlink control information DCI, where the first DCI includes a first wake-up indicator bit, and the first wake-up indicator bit is used to indicate whether the terminal device wakes up within a duration timer of a DRX cycle used for positioning services.

Optionally, in this embodiment, only the positioning service may exist between the network device and the terminal device, and both the network device and the terminal device enter the dual DRX mode. The network device sends the first DCI within a preset time window, which may be a Power saving offset period before one DRX cycle. The format of the first DCI is not a DCI format for indicating whether a terminal device wakes up within a duration timer of a DRX cycle for a communication service, i.e., the format of the first DCI is not DCI format 2-6. In order to distinguish from the DCI format 2-6, the first DCI format is DCI format 2-7, which is described below as an example. It should be understood that the names of the formats of the first DCI may also be referred to as DCI format 2-8, DCI format 2-9, and the like, which is not limited in this embodiment of the application. The first DCI is designed in a block shape, and each block of the first DCI includes a first wake-up indicator bit, where the first wake-up indicator bit is used to indicate whether a terminal device wakes up within a duration Timer (on _ duration Timer) of a DRX cycle for positioning traffic.

Optionally, the first DCI further includes a first indicator bit, where the first indicator bit includes one or more bits. The first indication bit is used for indicating whether the terminal equipment wakes up on the secondary cell corresponding to each bit included in the first indication bit. The length of the first indicator bit is p bits, and p is equal to the number of the secondary cells or the number of the secondary cell groups used for positioning service. That is, one bit of the first indicator bit corresponds to one secondary cell or one secondary cell group. It should be understood that the first indication bit may be referred to as a sleep indication bit, and the first indication bit may also have other names, which is not limited in the embodiments of the present application.

Referring to fig. 17, fig. 17 is a schematic diagram of a format of first DCI provided in an embodiment of the present application. The format of the first DCI is DCI format 2-7. Fig. 17 illustrates an instruction in one block (block) of the first DCI (i.e., DCI format 2-7). As shown in fig. 17, there are a total of (1+ p) (p is a positive integer) indication bits in one Block, where 1 bit is a first wake-up indication bit for indicating whether the terminal device wakes up in the DRX-on duration Timer of the DRX cycle used for the positioning service, for example, the bit is 1, which indicates that the terminal device wakes up in the DRX-on duration Timer of the DRX cycle used for the positioning service to perform PDCCH detection or blind detection; the bit is 0, and indicates that the terminal device is dormant in the DRX-on duration Timer of the DRX cycle for the positioning service. Or vice versa, namely the bit is 0, the terminal equipment is indicated to wake up in a DRX-on duration Timer of a DRX period for positioning service so as to perform PDCCH detection or blind detection; the bit is 1, and the terminal device is instructed to sleep in the DRX-on duration Timer of the DRX cycle for the positioning service. One bit of p (p is an integer greater than or equal to 0) bits (i.e., the first indicator bit) is used to indicate whether the terminal device wakes up on the secondary cell corresponding to the bit.

It should be appreciated that if the wake-up indicator bit indicates that the terminal device is awake within the DRX-on duration Timer of the DRX cycle used for location traffic, the network device is also awake during this period. Since the terminal device needs to perform PDCCH detection in the wake-up case, the network device needs to transmit PDCCH in the wake-up case to support PDCCH detection of the terminal device. It should also be understood that, in the embodiments of the present application, the reference to "awake" and "sleep" is for PDCCH detection (or PDCCH blind detection), that is, the reference to "awake" in the embodiments of the present application may be equivalently replaced by "performing PDCCH detection", and the reference to "sleep" may be equivalently replaced by "not performing PDCCH detection".

Optionally, because the first DCI is a newly defined DCI format, the network device needs a higher layer parameter to indicate a start bit of a first wake-up indication bit in the first DCI and/or a size of a block (block) in which the first wake-up indication bit is located before transmitting the first DCI. Specifically, the network device transmits RRC signaling before transmitting the first DCI. The RRC signaling is used to indicate a start bit of a first wake-up indication bit in the first DCI and/or a size (i.e., a length) of a block (block) in which the first wake-up indication bit is located. Or, the RRC signaling is used to indicate a start bit and an end bit of the first wake-up indication bit in the first DCI. Alternatively, the RRC signaling is used to indicate an end bit of the first wake-up indication bit in the first DCI and/or a size (i.e., a length) of a block (block) in which the first wake-up indication bit is located.

As an alternative embodiment, the wake-up or sleep may be indicated by whether the first wake-up indication bit is carried in the first DCI. For example, when the first DCI carries the first wake-up indicator bit, the terminal device is instructed to wake up in a DRX-on duration Timer of a DRX cycle for positioning service to perform PDCCH detection. And when the first DCI does not carry the first awakening indication bit, indicating the terminal equipment to sleep in a DRX-on duration Timer of a DRX period for positioning service.

S402, the terminal equipment receives the first DCI.

Optionally, the terminal device receives the first DCI, parses the first DCI, and wakes up or sleeps within the duration timer of the DRX cycle for positioning services according to the indication of the first wake-up indicator bit in the first DCI. If the first wake-up indicator bit in the first DCI indicates that the terminal device wakes up in the DRX-on duration Timer of the DRX cycle for the positioning service, the terminal device wakes up in the DRX-on duration Timer of the DRX cycle for the positioning service and performs PDCCH detection (or blind detection). Therefore, in this embodiment of the present application, the meaning of the first wake-up indication bit included in the first DCI may also be understood as: the first wake-up indicator bit is used for indicating the terminal equipment to wake up in a DRX-on duration Timer of a DRX cycle for positioning service so as to perform PDCCH detection or sleep.

Optionally, the terminal device receives RRC signaling before receiving the first DCI. The RRC signaling is used to indicate a start bit of a first wake-up indication bit in the first DCI and/or a size (i.e., a length) of a block (block) in which the first wake-up indication bit is located. Or, the RRC signaling is used to indicate a start bit and an end bit of the first wake-up indication bit in the first DCI. Alternatively, the RRC signaling is used to indicate an end bit of the first wake-up indication bit in the first DCI and/or a size (i.e., a length) of a block (block) in which the first wake-up indication bit is located.

s403, the network device sends a second DCI, where the second DCI includes a second wake-up indicator bit, and the second wake-up indicator bit is used to indicate whether the terminal device wakes up within a duration timer of a DRX cycle used for communication services.

Optionally, there is a communication service between the network device and the terminal device. And the network equipment transmits the second DCI in a preset time window. The preset time window may be a Power saving offset period before one DRX cycle. The format of the second DCI is a DCI format used in the NR system to indicate whether the terminal device wakes up within the duration timer of the DRX cycle of the communication service, that is, the format of the second DCI is a legacy DCI format 2-6, and the second DCI includes a second wake-up indicator bit to indicate whether the terminal device wakes up within the duration timer of the DRX cycle of the communication service.

Optionally, the implementation of the second DCI may refer to the description of DCI format 2-6 in the NR system, and is not described here. Referring to fig. 18, fig. 18 is a schematic diagram of the format of DCI format 2-6 in the NR system. Fig. 18 is a diagram illustrating an instruction in one block (block) of DCI format 2-6. As shown in fig. 18, there are a total of (1+ c) (c is an integer greater than or equal to 0) indication bits in one Block, where 1 bit is a second wake-up indication bit for indicating whether the terminal device wakes up in the DRX-on duration Timer of the DRX cycle used for communication traffic. Each of c (exemplarily, c ═ 0,1,2,3,4,5) bits is used to indicate whether a terminal device is awake on the secondary cell to which the bit corresponds.

S404, the terminal device receives the second DCI.

Optionally, the terminal device receives the second DCI, parses the second DCI, and wakes up or sleeps in a duration Timer (on _ duration Timer) of the DRX cycle for the communication service according to an indication of a second wake-up indicator bit in the second DCI. If the second wake-up indicator in the second DCI indicates that the terminal device wakes up in the DRX-on duration Timer of the DRX cycle used for the communication service, the terminal device wakes up in the DRX-on duration Timer of the DRX cycle used for the communication service and performs PDCCH detection (or blind detection). Therefore, in this embodiment of the present application, the meaning of the second wake-up indication bit included in the second DCI may also be understood as: the second wake-up indicator bit is used for indicating the terminal device to wake up in a DRX-on duration Timer of a DRX cycle for communication traffic to perform PDCCH detection or sleep.

Optionally, the technical solution provided in the embodiment of the present application may be applied to a scenario in which a DRX-C (i.e., a DRX cycle for communication service) and a DRX-P (i.e., a DRX cycle for positioning service) overlap in time, or may be applied to a scenario in which the DRX-C and the DRX-P do not overlap in time, such as scenario 2-1, scenario 2-2, scenario 2-3, and scenario 2-4 in the foregoing embodiment two. Wherein, the sidelink system in the scene 2-1, the scene 2-2, the scene 2-3 and the scene 2-4 should be replaced by the cellular system, and the SCI should be replaced by the DCI.

Therefore, in the embodiment of the application, a new DCI format (such as DCI format 2-7) is independently designed for the DRX period of the positioning service in the cellular system to indicate the awakening or sleeping in the DRX-on duration Timer in the DRX period of the positioning service, so that the method has clear meaning and high flexibility on one hand, and can be suitable for various scenes; on the other hand, the power consumption can be reduced, and the balance of the power consumption and the communication performance and/or the positioning performance can be realized.

The foregoing has outlined the method of the present application in detail, and to facilitate a better understanding of the above-described aspects of the embodiments of the present application, a corresponding apparatus or device is provided.

In the embodiment of the present application, the first device and the second device may be divided into function modules according to the method example, and the network device and the terminal device may also be divided into function modules according to the method example, for example, each function module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and another division manner may be available in actual implementation. The communication apparatus of the embodiment of the present application will be described in detail below with reference to fig. 19 to 23.

In the case of using an integrated unit, referring to fig. 19, fig. 19 is a schematic structural diagram of a communication device 1 provided in an embodiment of the present application. The communication apparatus 1 may be a first device or a chip or a circuit that may be provided in the first device. As shown in fig. 19, the communication device 1 includes: the transceiving unit 11, optionally comprises a processing unit 12.

In one design, the transceiver unit 11 is configured to transmit the first SCI; the transceiver unit 11 is further configured to transmit a second SCI, where the first SCI is used to indicate that a format of the second SCI is a first format, and the second SCI of the first format includes a wake-up indicator bit, where the wake-up indicator bit is used to indicate whether a second device wakes up within a duration timer of a DRX cycle for discontinuous reception for communication traffic and wakes up within a duration timer of a DRX cycle for positioning traffic.

Optionally, the processing unit 12 is configured to generate the first SCI and the second SCI.

Optionally, the transceiver unit 11 is further configured to send SL RRC signaling, where the SL RRC signaling is used to indicate a start bit of the second SCI and/or a size of the second SCI.

Optionally, the second SCI further includes a first field and a second field. The first field is used for indicating the identification of the first device, and the identification of the first device is the layer2 identification of the first device; the second field is used to indicate an identity of the second device, which is a layer2 identity of the second device.

Optionally, the identifier of the first device is 24 bits, and the identifier of the second device is 24 bits; or, the identifier of the first device is a full layer2 identifier of the first device, and the identifier of the second device is a full layer2 identifier of the second device.

Optionally, the second SCI further includes one or more of the following fields: a third field is used for indicating whether the second device wakes up on a carrier unit corresponding to each bit of the third field; a fourth field for indicating a start time and a sleep duration for the second device to go to sleep within a DRX duration of a DRX cycle for communication traffic and a DRX cycle for positioning traffic, or a fourth field for indicating a start time and a sleep duration for the second device to go to sleep within a DRX duration of a DRX cycle for communication traffic, and a fifth field for indicating a start time and a sleep duration for the second device to go to sleep within a DRX duration of a DRX cycle for positioning traffic; the sixth field is used to indicate a period for the second device to perform the first SCI detection.

Optionally, the length of the third field is equal to the sum of the number of carrier units used for communication service and the number of carrier units used for positioning service.

Optionally, the length of the second-order SCI format field in the first SCI is 2 bits, and the value of the second-order SCI format field in the first SCI indicating the first format is binary 10 or 11.

It should be understood that the communication apparatus 1 in this design may correspondingly perform the first embodiment, and the above operations or functions of each unit in the communication apparatus 1 are respectively for realizing the corresponding operations of the first device in the first embodiment, and for technical effects, reference is made to the technical effects in the first embodiment, and for brevity, no further description is given here.

In another design, the transceiver unit 11 is configured to transmit a third SCI; the transceiver unit 11 is further configured to send a fourth SCI, where the third SCI is used to indicate that the format of the fourth SCI is the second format, and the fourth SCI of the second format includes a first wake-up indicator bit, where the first wake-up indicator bit is used to indicate whether the second device wakes up within the duration timer of the DRX cycle.

Optionally, the processing unit 12 is configured to generate a third SCI and a fourth SCI.

Optionally, the transceiver unit 11 is further configured to send a fifth SCI; the transceiver unit 11 is further configured to transmit a sixth SCI, where the fifth SCI is used to indicate that the format of the sixth SCI is a third format, and the fifth SCI of the third format includes a second wake-up indicator bit, where the second wake-up indicator bit is used to indicate whether the second device wakes up within a duration timer of a DRX cycle for a second service; wherein the second service is a communication service and the first service is a positioning service; alternatively, the second service is a location service and the first service is a communication service.

Optionally, the transceiver unit 11 is further configured to send a first SL RRC signaling, where the first SL RRC signaling is used to indicate a start bit of the fourth SCI and/or a size of the fourth SCI.

Optionally, the transceiver unit 11 is further configured to send a second SL RRC signaling, where the second SL RRC signaling is used to indicate a start bit of the sixth SCI and/or a size of the sixth SCI.

Optionally, the first wake-up indication bit is used to indicate whether the second device wakes up within a duration timer of a DRX cycle for the first service.

Optionally, the fourth SCI and the sixth SCI each include a first field and a second field. The first field is used for indicating the identification of the first device, and the identification of the first device is the layer2 identification of the first device; the second field is used to indicate an identity of the second device, which is a layer2 identity of the second device.

Optionally, the fourth SCI and the sixth SCI each include one or more of the following fields: a third field is used for indicating whether the second device wakes up on a carrier unit corresponding to each bit of the third field; the fourth field is used for indicating the starting time and the sleeping duration of the second device going to sleep in the DRX duration of the DRX period used for the first service or the DRX period used for the second service, and the sixth field is used for indicating the period of the second device for detecting the third SCI or the fifth SCI.

Optionally, the length of the third field is equal to the number of carrier elements used for the first service or the number of carrier elements used for the second service.

Optionally, the second-order SCI format field in the third SCI has a length of k bits, and the second-order SCI format word indicating the second format in the third SCIThe segment has a value greater than or equal to decimal 2 and less than or equal to 2 ^k -1 or an integer; and/or the length of the second-order SCI format field in the fifth SCI is k bits, the value of the second-order SCI format field in the fifth SCI for indicating the third format is different from the value of the second-order SCI format field in the third SCI, and is greater than or equal to decimal 2 and less than or equal to 2 ^k -1. k is an integer greater than 2.

It should be understood that the communication apparatus 1 in this design may correspondingly perform the second embodiment, and the above operations or functions of the units in the communication apparatus 1 are respectively for implementing the corresponding operations of the first device in the second embodiment, and the technical effects of the two embodiments are referred to as the technical effects in the second embodiment, and are not described herein again for brevity.

Referring to fig. 20, fig. 20 is a schematic structural diagram of a communication device 2 according to an embodiment of the present application. The communication means 2 may be a second device or a chip or a circuit that may be provided in a second device. As shown in fig. 20, the communication device 2 includes: a transceiver unit 21.

In one design, the transceiver unit 21 is configured to receive a first SCI; the transceiver unit 21 is further configured to receive a second SCI, where the first SCI is used to indicate that a format of the second SCI is a first format, and the second SCI of the first format includes a wake-up indicator bit, where the wake-up indicator bit is used to indicate whether the second device wakes up within a duration timer of a DRX cycle for communication traffic and whether the second device wakes up within a duration timer of a DRX cycle for positioning traffic.

Optionally, the communication device 2 further comprises a PSCCH detection unit 22. The PSCCH detection unit 22 is configured to wake up and perform PSCCH detection within the duration timer of the DRX cycle for communication traffic when the wake-up indication bit is used to indicate that the second device is awake within the duration timer of the DRX cycle for communication traffic; and/or, when the wake-up indication bit is used for indicating that the second device wakes up in the duration timer of the DRX period for the positioning service, waking up in the duration timer of the DRX period for the positioning service and performing PSCCH detection.

Optionally, the transceiver unit 21 is further configured to receive a SL RRC signaling, where the SL RRC signaling is used to indicate a start bit of the second SCI and/or a size of the second SCI.

Optionally, the communication device 2 further comprises a wake-up or sleep unit 23. The wake-up or sleep unit 23 is configured to wake up or sleep in the duration timer of the DRX cycle for communication service and wake up or sleep in the duration timer of the DRX cycle for positioning service according to an indication of the wake-up indication bit in the second SCI.

Optionally, the second SCI further includes a first field and a second field. The first field is used for indicating the identification of the first device, and the identification of the first device is the layer2 identification of the first device; the second field is used for indicating the identity of the second device, which is the layer2 identity of the second device.

Optionally, the second SCI further includes one or more of the following fields: a third field is used for indicating whether the second device wakes up on a carrier unit corresponding to each bit of the third field; a fourth field for indicating a start time and a sleep duration for the second device to go to sleep within a DRX duration of a DRX cycle for communication traffic and a DRX cycle for positioning traffic, or a fourth field for indicating a start time and a sleep duration for the second device to go to sleep within a DRX duration of a DRX cycle for communication traffic, and a fifth field for indicating a start time and a sleep duration for the second device to go to sleep within a DRX duration of a DRX cycle for positioning traffic; a sixth field is used to indicate a period for the second device to perform the first SCI detection.

Optionally, the length of the second-order SCI format field in the first SCI is 2 bits, and a value of the second-order SCI format field in the first SCI for indicating the first format is binary 10 or 11.

The PSCCH detection unit 22 and the wakeup or sleep unit 23 may be integrated into a single unit, such as a processing unit.

It should be understood that in this design, the communication apparatus 2 can correspondingly perform the first embodiment, and the above operations or functions of the units in the communication apparatus 1 are respectively for implementing the corresponding operations of the second device in the first embodiment, and the technical effects thereof are referred to the technical effects in the first embodiment, and are not described herein again for brevity.

In another design, the transceiver unit 21 is configured to receive a third SCI; the transceiver unit 21 is further configured to receive a fourth SCI, where the third SCI is used to indicate that the format of the fourth SCI is the second format, and the fourth SCI of the second format includes a first wake-up indicator bit, where the first wake-up indicator bit is used to indicate whether the second device wakes up within the duration timer of the DRX cycle.

Optionally, the transceiver unit 21 is further configured to receive a fifth SCI; the transceiving unit 21 is further configured to receive a sixth SCI, where the fifth SCI is used to indicate that the format of the sixth SCI is a third format, and the fifth SCI of the third format includes a second wake-up indicator bit, where the second wake-up indicator bit is used to indicate whether a second device wakes up within a duration timer of a DRX cycle for a second service; wherein the second service is a communication service and the first service is a positioning service; alternatively, the second service is a location service and the first service is a communication service.

Optionally, the transceiver unit 21 is further configured to receive a first SL RRC signaling, where the first SL RRC signaling is used to indicate a start bit of the fourth SCI and/or a size of the fourth SCI.

Optionally, the transceiver unit 21 is further configured to receive a second SL RRC signaling, where the second SL RRC signaling is used to indicate a start bit of the sixth SCI and/or a size of the sixth SCI.

Optionally, the communication device 2 further comprises a PSCCH detection unit 22. The PSCCH detection unit 22 is configured to wake up and perform PSCCH detection in the duration timer of the DRX cycle when the first wake-up indicator bit is used to indicate that the second device wakes up in the duration timer of the DRX cycle; and/or when the second wake-up indication bit is used for indicating that the second device wakes up in the duration timer of the DRX period for the second service, the second device wakes up in the duration timer of the DRX period for the second service and performs PSCCH detection.

Optionally, the communication device 2 further comprises a wake-up or sleep unit 23. The wake-up or sleep unit 23 is configured to wake up or sleep in the duration timer of the DRX cycle for the first service according to the indication of the wake-up indication bit in the fourth SCI; or waking up or sleeping in the duration timer of the DRX cycle for the second service according to the indication of the wake-up indication bit in the sixth SCI.

Optionally, the length of the second-order SCI format field in the third SCI is k bits, and a value of the second-order SCI format field in the third SCI indicating the second format is greater than or equal to decimal 2 and less than or equal to 2 ^k -1 or an integer; and/or the length of the second-order SCI format field in the fifth SCI is k bits, the value of the second-order SCI format field in the fifth SCI for indicating the third format is different from the value of the second-order SCI format field in the third SCI, and is greater than or equal to decimal 2 and less than or equal to 2 ^k -an integer of 1. k is an integer greater than 2.

The PSCCH detection unit 22 and the awake or sleep unit 23 may be integrated into a single unit, such as a processing unit.

It should be understood that the communication apparatus 2 in this design may correspondingly perform the second embodiment, and the above operations or functions of each unit in the communication apparatus 2 are respectively for realizing the corresponding operations of the second device in the second embodiment, and for technical effects, reference is made to the technical effects in the second embodiment, and for brevity, no further description is given here.

Referring to fig. 21, fig. 21 is a schematic structural diagram of a communication device 3 according to an embodiment of the present application. The communication means 3 may be a network device or a chip or a circuit that may be provided in a network device. As shown in fig. 21, the communication device 3 includes: the transceiver unit 31 may optionally include a processing unit 32.

In one design, the transceiver unit 31 is configured to transmit DCI including a wake-up indicator bit indicating whether a terminal device wakes up within a duration timer of a DRX cycle for communication traffic and whether the terminal device wakes up within the duration timer of the DRX cycle for positioning traffic.

Optionally, the processing unit 32 is configured to generate DCI.

Optionally, the DCI format is a DCI format used in the NR system to indicate whether the terminal device wakes up within a duration timer of a DRX cycle of a communication service, that is, the DCI format is DCI format 2-6.

Optionally, the DCI further includes a first indication bit, where the first indication bit is used to indicate whether the terminal device wakes up on a secondary cell corresponding to each bit included in the first indication bit.

Optionally, the length of the first indicator bit is p bits, and p is equal to the number of the secondary cells or the number of the secondary cell groups used for the positioning service.

It should be understood that in this design, the communication apparatus 3 can correspondingly perform the third embodiment, and the above operations or functions of each unit in the communication apparatus 3 are respectively for implementing the corresponding operations of the network device in the third embodiment, and the technical effects of the third embodiment are referred to as the technical effects in the third embodiment, and are not described herein again for brevity.

In another design, the transceiver unit 31 is configured to transmit a first DCI, where the first DCI includes a first wake-up indicator bit, and the first wake-up indicator bit is used to indicate whether a terminal device wakes up within a duration timer of a DRX cycle used for positioning services.

Optionally, the transceiver unit 31 is further configured to transmit a second DCI, where a format of the second DCI is a DCI format used in the NR system to indicate whether the terminal device wakes up within a duration timer of a DRX cycle of a communication service, that is, the format of the second DCI is a legacy DCI format 2-6, where the second DCI includes a second wake-up indicator bit, and the second wake-up indicator bit is used to indicate whether the terminal device wakes up within the duration timer of the DRX cycle of the communication service.

Optionally, the processing unit 32 is configured to generate a first DCI and a second DCI.

Optionally, the transceiver unit 31 is further configured to send an RRC signaling, where the RRC signaling is used to indicate a start bit of the first wake-up indication bit and/or a size of a block where the first wake-up indication bit is located.

Optionally, the format of the first DCI is not a format of DCI used to indicate whether the terminal device wakes up within a duration timer of a DRX cycle used for a communication service.

Optionally, the first DCI further includes a first indicator bit, where the first indicator bit is used to indicate whether the terminal device wakes up on a secondary cell corresponding to each bit included in the first indicator bit.

It should be understood that, in this design, the communication apparatus 3 may correspondingly perform the fourth embodiment, and the above operations or functions of each unit in the communication apparatus 3 are respectively for realizing the corresponding operations of the network device in the fourth embodiment, and for technical effects, reference is made to technical effects in the fourth embodiment, and for brevity, no further description is given here.

Referring to fig. 22, fig. 22 is a schematic structural diagram of a communication device 4 according to an embodiment of the present application. The communication means 4 may be a terminal device or a chip or a circuit that may be provided in a terminal device. As shown in fig. 22, the communication device 4 includes: a transceiver unit 41.

In one design, the transceiver unit 41 is configured to receive DCI including a wake-up indicator bit indicating whether the terminal device wakes up within a duration timer of a DRX cycle for communication traffic and whether the terminal device wakes up within a duration timer of a DRX cycle for positioning traffic.

Optionally, the communication device 4 further includes a PDCCH detecting unit 42. The PDCCH detecting unit 42, configured to wake up in the duration timer of the DRX cycle for communication service and perform PDCCH detection when the wake-up indicator indicates that the terminal device wakes up in the duration timer of the DRX cycle for communication service; and/or when the wake-up indicator bit is used for indicating that the terminal equipment wakes up in the duration timer of the DRX period for the positioning service, waking up in the duration timer of the DRX period for the positioning service and performing PDCCH detection.

Optionally, the format of the DCI is a DCI format used in the NR system to indicate whether the terminal device wakes up within a duration timer of a DRX cycle of a communication service, that is, the DCI format is DCI format 2-6.

The PDCCH detecting section 42 may also be referred to as a processing section.

It should be understood that in this design, the communication apparatus 4 can correspondingly perform the third embodiment, and the above operations or functions of each unit in the communication apparatus 4 are respectively for implementing the corresponding operations of the terminal device in the third embodiment, and the technical effects of the third embodiment are referred to as the technical effects in the third embodiment, and are not described herein again for brevity.

In another design, the transceiver unit 41 is configured to receive a first DCI, where the first DCI includes a first wake-up indicator bit, and the first wake-up indicator bit is used to indicate whether a terminal device wakes up within a duration timer of a DRX cycle used for positioning traffic.

Optionally, the transceiver unit 41 is further configured to receive a second DCI, where a format of the second DCI is a format of a DCI used in the NR system to indicate whether the terminal device wakes up within a duration timer of a DRX cycle of a communication service, that is, the format of the second DCI is a legacy DCI format 2-6, where the second DCI includes a second wake-up indicator bit, and the second wake-up indicator bit is used to indicate whether the terminal device wakes up within the duration timer of the DRX cycle used for the communication service.

Optionally, the transceiver unit 41 is further configured to receive an RRC signaling, where the RRC signaling is used to indicate a start bit of the first wake-up indication bit and/or a size of a block in which the first wake-up indication bit is located.

Optionally, the communication device 4 further includes a PDCCH detecting unit 42. The PDCCH detecting unit 42 is configured to wake up in the duration timer of the DRX cycle for communication services and perform PDCCH detection when the first wake-up indicator bit is used to indicate that the terminal device wakes up in the duration timer of the DRX cycle for communication services; and/or when the second wake-up indication bit is used for indicating that the terminal equipment wakes up in the duration timer of the DRX period for the positioning service, waking up in the duration timer of the DRX period for the positioning service and performing PDCCH detection.

Optionally, the format of the first DCI is not a DCI for indicating whether the terminal device wakes up within a duration timer of a DRX cycle used for a communication service.

The PDCCH detecting section 42 may also be referred to as a processing section.

It should be understood that, in this design, the communication apparatus 4 may correspondingly perform the fourth embodiment, and the above operations or functions of each unit in the communication apparatus 4 are respectively for realizing the corresponding operations of the terminal device in the fourth embodiment, and for technical effects, reference is made to technical effects in the fourth embodiment, and for brevity, no further description is given here.

Referring to fig. 23, fig. 23 is a schematic structural diagram of a communication device 1000 according to an embodiment of the present application. As shown in fig. 23, a communication apparatus 1000 provided in the embodiment of the present application may be used to implement the method described in the foregoing method embodiment, and reference may be made to the description in the foregoing method embodiment. The communication apparatus 1000 may be any one of the first device and the second device.

The communications device 1000 includes one or more processors 1001. The processor 1001 may be a general-purpose processor or a special-purpose processor, etc. For example, a baseband processor, or a central processor. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control a device (e.g., UE, base station or chip, etc.), execute a software program, and process data of the software program. The apparatus may include a transceiving unit to enable input (reception) and output (transmission) of signals. For example, the apparatus may be a chip, and the transceiving unit may be an input and/or output circuit of the chip, or a communication interface. The chip may be for a terminal device (such as a UE) or an access network device (such as a base station). As another example, the apparatus may be a terminal device (e.g., UE) or an access network device (e.g., base station), and the transceiver unit may be a transceiver, a radio frequency chip, or the like.

The communications apparatus 1000 includes one or more processors 1001, and the one or more processors 1001 may implement the method of the first device or the second device in any of the foregoing embodiments.

Optionally, the processor 1001 may also implement other functions besides implementing the method of any of the foregoing embodiments.

Optionally, in a design, the processor 1001 may also include instructions 1003, which may be executed on the processor, so that the communication apparatus 1000 performs the method described in any of the method embodiments.

In yet another possible design, the communication apparatus 1000 may also include a circuit, and the circuit may implement the function of the first device or the second device in any of the foregoing method embodiments.

In yet another possible design, the communication device 1000 may include one or more memories 1002 having instructions 1004 stored thereon, which may be executed on the processor, to cause the communication device 1000 to perform the method described in any of the above method embodiments. Optionally, the memory may further store data therein. Instructions and/or data may also be stored in the optional processor. For example, the one or more memories 1002 may store DCI or SCI as described in the embodiments above, or other information referred to in the embodiments above. The processor and the memory may be provided separately or may be integrated together.

In yet another possible design, the communications device 1000 may also include a transceiver unit 1005 and an antenna 1006, or a communication interface. The transceiving unit 1005 may be referred to as a transceiver, transceiving circuit, transceiver, or the like, and is used for implementing transceiving function of the apparatus through the antenna 1006. The communication interface (not shown in the figure) may be used for communication between the core network device and the access network device, or between the access network device and the access network device. Alternatively, the communication interface may be an interface for wired communication, such as an interface for fiber-optic communication.

The processor 1001 may be referred to as a processing unit and controls an apparatus such as a communication device.

It should be understood that the processor in the embodiments of the present application may be a Central Processing Unit (CPU), and the processor may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, and not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and direct bus RAM (DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware (e.g., circuitry), firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer instructions or the computer program are loaded or executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, 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 by wire, such as optical fiber, or wireless, such as infrared, wireless, microwave, etc. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

Embodiments of the present application also provide a computer program product, which includes computer program code to, when run on a computer, cause the computer to perform the method steps of the first device described in the foregoing embodiments; or cause the computer to perform the method steps of the second device as described in the previous embodiments, when the computer program code is run on the computer.

Embodiments of the present application also provide a computer-readable storage medium, having stored thereon program instructions, which, when run on a computer, cause the computer to perform the method steps of the first device described in the foregoing embodiments; or cause the computer to perform the method steps of the second device as described in the previous embodiments, when the computer program code is run on the computer.

The embodiment of the application also provides a device which can be a chip. The chip includes a processor. The processor is configured to read and execute the computer program stored in the memory to perform the method of any possible implementation of any of the foregoing embodiments. Optionally, the chip further comprises a memory, and the memory is connected with the processor through a circuit or a wire. Further optionally, the chip further comprises a communication interface, and the processor is connected to the communication interface. The communication interface is used for receiving data and/or signals needing to be processed, and the processor acquires the data and/or signals from the communication interface, processes the data and/or signals and outputs processing results through the communication interface. The communication interface may be an input output interface.

In another embodiment of the present application, there is also provided a communication system including a first device and a second device. The first device and the second device may perform the method of any of the preceding embodiments.

One of ordinary skill in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by hardware related to instructions of a computer program, which may be stored in a computer-readable storage medium, and when executed, may include the processes of the above method embodiments. And the aforementioned storage medium includes: various media capable of storing program codes, such as ROM or RAM, magnetic or optical disks, etc.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for indicating wake-up in a dual Discontinuous Reception (DRX) mode is applied to a first device, and the method comprises the following steps:

sending first sidelink control information SCI;

transmitting a second SCI, the first SCI indicating that a format of the second SCI is a first format, the second SCI of the first format including a wake-up indication bit indicating whether a second device wakes up within a duration timer of a Discontinuous Reception (DRX) cycle for communication traffic and whether the second device wakes up within the duration timer of the DRX cycle for positioning traffic.

2. A wake-up indication method in a dual DRX mode is applied to a second device, and is characterized by comprising the following steps:

receiving a first SCI;

receiving a second SCI, wherein the first SCI is used for indicating that the format of the second SCI is a first format, and the second SCI of the first format comprises a wake-up indication bit which is used for indicating whether the second device wakes up in a duration timer of a DRX period for communication service and wakes up in the duration timer of the DRX period for positioning service.

3. The method of claim 2, wherein if the wake-up indication bit indicates that the second device wakes up within the duration timer of the DRX cycle for the communication traffic, the second device wakes up within the duration timer of the DRX cycle for the communication traffic and performs PSCCH detection; and/or the presence of a gas in the gas,

and if the wakeup indication bit is used for indicating the second equipment to wake up in the duration timer of the DRX period for the positioning service, the second equipment wakes up in the duration timer of the DRX period for the positioning service and carries out PSCCH detection.

4. The method of any of claims 1-3 wherein the second SCI further comprises a first field and a second field;

the first field is used for indicating the identification of the first device, and the identification of the first device is the layer2 identification of the first device;

the second field is used for indicating the identification of the second device, and the identification of the second device is the layer2 identification of the second device.

5. The method of claim 4, wherein the identity of the first device is 24 bits and the identity of the second device is 24 bits;

or, the identifier of the first device is a full layer2 identifier of the first device, and the identifier of the second device is a full layer2 identifier of the second device.

6. The method of any of claims 1-5, wherein the second SCI further comprises one or more of the following fields:

a third field is used for indicating whether the second device wakes up on a carrier unit corresponding to each bit included in the third field;

a fourth field for indicating a start time and a sleep duration for the second device to go to sleep within a DRX duration of a DRX cycle for communication traffic and a DRX cycle for positioning traffic, or a fourth field for indicating a start time and a sleep duration for the second device to go to sleep within a DRX duration of a DRX cycle for communication traffic, and a fifth field for indicating a start time and a sleep duration for the second device to go to sleep within a DRX duration of a DRX cycle for positioning traffic;

a sixth field is used to indicate a periodicity of the first SCI detection by the second device.

7. The method of claim 6, wherein the length of the third field is equal to the sum of the number of carrier units used for communication traffic and the number of carrier units used for positioning traffic.

8. The method of any of claims 1-7 wherein the second order SCI format field in the first SCI has a length of 2 bits and the second order SCI format field in the first SCI for indicating the first format has a value of binary 10 or 11.

9. The method of any of claims 1 and 4-8, wherein before the sending the second SCI, the method further comprises:

transmitting sidelink SL Radio Resource Control (RRC) signaling indicating a start bit of the second SCI and/or a size of the second SCI.

10. The method of any of claims 2-8, wherein prior to receiving the second SCI, the method further comprises:

receiving SL RRC signaling indicating a start bit of the second SCI and/or a size of the second SCI.

11. The method of claim 2, further comprising:

according to the indication of the awakening indication bit in the second SCI, awakening or sleeping in the duration timer of the DRX period for communication service, and awakening or sleeping in the duration timer of the DRX period for positioning service.

12. A wake-up indication method in a dual DRX mode is applied to a first device, and the method comprises the following steps:

transmitting the third SCI;

and sending a fourth SCI, wherein the third SCI is used for indicating that the format of the fourth SCI is a second format, and the fourth SCI of the second format comprises a first wake-up indication bit which is used for indicating whether a second device wakes up in a duration timer of a DRX period or not.

13. The method of claim 12, wherein the first wake-up indicator bit is used to indicate whether the second device wakes up within a duration timer of a DRX cycle used for the first traffic.

14. The method according to claim 12 or 13, characterized in that the method further comprises:

transmitting the fifth SCI;

transmitting a sixth SCI, the fifth SCI indicating that a format of the sixth SCI is a third format, the fifth SCI of the third format including a second wake-up indicator bit indicating whether a second device wakes up within a duration timer of a DRX cycle for a second traffic;

wherein the second service is a communication service and the first service is a positioning service; or, the second service is a positioning service, and the first service is a communication service.

15. The method according to any of claims 12-14, wherein before said sending the fourth SCI, the method further comprises:

sending a first SL RRC signaling indicating a start bit of the fourth SCI and/or a size of the fourth SCI.

16. The method of claim 14 or 15, wherein before the sending the sixth SCI, the method further comprises:

sending a second SL RRC signaling indicating a start bit of the sixth SCI and/or a size of the sixth SCI.

17. A wake-up indication method in a dual DRX mode is applied to a second device, and is characterized by comprising the following steps:

receiving a third SCI;

receiving a fourth SCI, wherein the third SCI is used for indicating that the format of the fourth SCI is a second format, and the fourth SCI of the second format comprises a first wake-up indication bit which is used for indicating whether a second device wakes up in a duration timer of a DRX period or not.

18. The method of claim 17, wherein the first wake-up indicator bit is used to indicate whether the second device is awake within a duration timer of a DRX cycle for the first traffic.

19. The method according to claim 17 or 18, further comprising:

receiving a fifth SCI;

receiving a sixth SCI, wherein the fifth SCI is used for indicating that the format of the sixth SCI is a third format, and the fifth SCI of the third format comprises a second wake-up indication bit which is used for indicating whether a second device wakes up within a duration timer of a DRX period for second service;

20. The method of any of claims 17-19, wherein prior to receiving the fourth SCI, the method further comprises:

receiving first SL RRC signaling indicating a start bit of the fourth SCI and/or a size of the fourth SCI.

21. The method according to claim 19 or 20, wherein before receiving the sixth SCI, the method further comprises:

receiving second SL RRC signaling indicating a start bit of the sixth SCI and/or a size of the sixth SCI.

22. The method of any of claims 17-21, wherein if the first wake-up indicator bit indicates that the second device is awake within the duration timer of the DRX cycle, the second device wakes up within the duration timer of the DRX cycle and performs PSCCH detection;

and/or if the second wake-up indication bit is used for indicating that the second device wakes up in the duration timer of the DRX period for the second service, the second device wakes up in the duration timer of the DRX period for the second service and performs PSCCH detection.

23. The method of any of claims 12-22 wherein the fourth SCI and the sixth SCI each comprise a first field and a second field;

24. The method of claim 23, wherein the identification of the first device is 24 bits, and the identification of the second device is 24 bits;

25. The method of any of claims 12-24, wherein the fourth SCI and the sixth SCI each include one or more of the following fields:

a third field is used for indicating whether the second device wakes up on a carrier unit corresponding to each bit of the third field;

a fourth field for indicating a start time and a sleep duration for the second device to go to sleep for a DRX duration of a DRX cycle for the first traffic or a DRX cycle for the second traffic,

a sixth field is used to indicate a period for the second device to perform third SCI or fifth SCI detection.

26. The method of claim 25, wherein a length of the third field is equal to a number of carrier elements for a first service or a number of carrier elements for a second service.

27. The method of any of claims 12-26 wherein the second order SCI format field in the third SCI has a length of k bits, and wherein the value of the second order SCI format field in the third SCI indicating the second format is greater than or equal to 2 decimal and less than or equal to 2 ^k -1 or an integer;

and/or the length of the second-order SCI format field in the fifth SCI is k bits, the value of the second-order SCI format field in the fifth SCI for indicating the third format is different from the value of the second-order SCI format field in the third SCI, and is greater than or equal to decimal 2 and less than or equal to 2 ^k -an integer of 1;

k is an integer greater than 2.

28. A communication device, characterized by comprising means or modules for performing the method of any of claims 1-27.

29. A computer-readable storage medium having stored therein program instructions that, when run on a computer, cause the computer to perform the method of any one of claims 1-27.

30. A computer program product comprising program instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1-27.