Wake-up indication method in dual drx mode and related apparatus

Abstract

The embodiment of the application discloses a method and related device for indicating wake-up in a dual DRX mode, which comprises: a first device sends a first-stage SCI and then sends a second-stage SCI within a preset time window; the first-stage SCI is used to indicate that the format of the second-stage SCI is a new SCI format, such as SCI format 2-C / 2-D, the second-stage SCI in the new SCI format comprises a wake-up indication bit; the wake-up indication bit is used to indicate whether a second device wakes up within a duration timer of a DRX cycle for communication service and whether the second device wakes up within a duration timer of a DRX cycle for positioning service. By using the embodiment of the application, power consumption can be reduced, and a trade-off between power consumption and communication performance and / or positioning performance can be achieved.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a wake-up indication method and related apparatus in dual discontinuous reception (DRX) mode. Background Technology

[0002] In Long Term Evolution (LTE), New Radio (NR), or sidelink systems, user equipment (UE) consumes a significant amount of power when performing Physical Downlink Control Channel (PDCCH) or Physical Sidelink Control Channel (PSCCH) detection. However, data transmission is typically bursty. For example, there may be data transmission for a period followed by a prolonged period without further transmission. Therefore, most PDCCH / PSCCH detections performed by the UE fail to detect any indications. Based on this, both LTE and NR systems have introduced Discontinuous Reception (DRX) technology. The network device indicates a DRX cycle to the UE. Within a DRX cycle, the UE performs PDCCH detection during the active (or wake-up) time and sleeps during the remaining time, thereby reducing UE power consumption. However, when the UE performs PDCCH detection during the active period, data transmission is often bursty and sparse, so there is a high probability that there is no data transmission requirement. This results in a significant proportion of detected PDCCHs having no indication, thus still leading to high power consumption. Furthermore, because the UE in the NR system operates on a larger RF and baseband bandwidth, its power consumption is even higher. Therefore, a wakeup signal (WUS) is introduced in the NR system to further reduce UE power consumption. Specifically, before the network device indicates the DRX cycle to the UE, it sends a WUS to indicate whether the UE needs to be woken up in the next DRX cycle. If woken up, the UE performs PDCCH detection and / or receives the physical downlink shared channel (PDSCH), and / or performs measurement reporting.

[0003] For UEs that support both communication and positioning functions, lower power consumption is better while ensuring both communication and positioning performance. In some scenarios, only communication or positioning needs may exist at the same time, so it is unnecessary to configure the same set of DRX parameters for communication and positioning. Even if communication and positioning needs exist simultaneously in some scenarios, the UE can flexibly wake up or go to sleep because the processing time and latency requirements for communication and positioning services are different. In the wake-up state, communication scheduling or positioning scheduling can be detected (or demodulated). Therefore, for UEs that support both communication and positioning functions, a dual DRX mechanism should be introduced for communication and positioning services. That is, DRX parameters should be set separately for communication and positioning services, such as DRX period, DRX duration timer (drx-on duration Timer), DRX inactivity timer (drx-inactivity Timer), etc. However, how to design a wake-up indication on the dual DRX mechanism to further reduce power consumption, thereby achieving a trade-off between power consumption and communication performance and / or positioning performance, has become an urgent problem to be solved. Summary of the Invention

[0004] This application provides a wake-up indication method and related apparatus in dual DRX mode, which can reduce power consumption and achieve a trade-off between power consumption and communication performance and / or positioning performance.

[0005] The present application is described below from different aspects. It should be understood that the different implementation methods and beneficial effects described below can be referenced from each other.

[0006] Firstly, this application provides a wake-up indication method in dual DRX mode, applied to a sidelink system. The method includes: a first device broadcasting a first sidelink control information (SCI), and then broadcasting a second SCI within a preset time window in a multicast or unicast manner. The first SCI indicates that the format of the second SCI is a first format, and the second SCI in the first format includes a wake-up indication bit. This wake-up indication bit indicates whether the second device wakes up within a duration timer of a DRX cycle used for communication services and within a duration timer of a DRX cycle used for positioning services. The preset time window can be within a power saving offset duration preceding a DRX cycle.

[0007] Optionally, the first SCI is a first-stage SCI, and the second SCI is a second-stage SCI.

[0008] Optionally, the second-stage SCI format field in the first SCI is 2 bits long. When the value of the second-stage SCI format field is binary 10 or 11, it indicates that the format of the second SCI is the first format. This first format is not either the existing SCI format 2-A or SCI format 2-B.

[0009] Optionally, the length of the wake-up indicator bit mentioned above is 2 bits.

[0010] As can be seen, this solution uses a newly designed second-order SCI (i.e., the second SCI) to indicate whether the target UE (i.e., the second device) should wake up within the duration timer of the DRX cycle used for communication services and within the duration timer of the DRX cycle used for location services, respectively. On the one hand, it eliminates the need to design separate SCIs for communication services and location services, which can reduce signaling overhead; on the other hand, it can achieve a trade-off between power consumption and communication performance and / or location performance by flexibly indicating wake-up or sleep.

[0011] In conjunction with the first aspect, in one possible design, before the first device sends the second SCI, the method further includes: the first device sending a sidelink (SL) radio resource control (RRC) signaling to the second device, the SL RRC signaling being used to indicate the start bit of the second SCI and / or the size of the second SCI.

[0012] As can be seen, this scheme provides an SL RRC signaling for the newly designed second-order SCI (i.e., the second SCI) to indicate the start bit and size of the wake-up indicator bit in the second-order SCI, so as to support the implementation of the wake-up indicator in the dual DRX mode.

[0013] In conjunction with the first aspect, in one possible design, the aforementioned second SCI further includes a first field and a second field. The first field indicates the identifier of the first device, which is the complete Layer 2 identifier (complete Layer 2-ID) of the first device, represented by 24 bits. The second field indicates the identifier of the second device, which is also the complete Layer 2 identifier (complete Layer 2-ID) of the second device, represented by 24 bits. The first field has a length of 24 bits, and the second field also has a length of 24 bits.

[0014] As can be seen, this solution can avoid the situation where the complete Layer 2 identifier cannot be recovered in the absence of a Media Access Control (MAC) header by directly carrying the complete Layer 2 identifier of the second device in the second SCI.

[0015] In conjunction with the first aspect, in one possible design, the aforementioned second SCI further includes one or more of the following fields: a third field 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 indicating the start time and duration of the second device entering sleep mode during the DRX duration of the DRX period for communication services and the DRX period for location services, or the fourth field indicating the start time and duration of the second device entering sleep mode during the DRX duration of the DRX period for communication services; a fifth field indicating the start time and duration of the second device entering sleep mode during the DRX duration of the DRX period for location services; and a sixth field indicating the period during which the second device performs physical sidelink control channel (PSCCH) or first SCI detection. The third field includes one or more bits, each bit corresponding to one or more component carriers (CCs). The length of the third field can be equal to the sum of the number of carrier units used for communication services and the number of carrier units used for location services.

[0016] As can be seen, this solution facilitates the support of other functions by carrying one or more other optional fields (i.e., the third field, the fourth field, the fifth field, and the sixth field) in the second SCI.

[0017] Secondly, this application provides a wake-up indication method in dual DRX mode, applied to a sidelink system. The method includes: a second device receiving a first SCI and then receiving a second SCI. The first SCI indicates 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-up indication bit indicates whether the second device wakes up within a duration timer of a DRX cycle used for communication services and whether it wakes up within a duration timer of a DRX cycle used for positioning services.

[0018] Optionally, the first SCI is a first-stage SCI, and the second SCI is a second-stage SCI.

[0019] Optionally, the second-stage SCI format field in the first SCI is 2 bits long. When the value of the second-stage SCI format field is binary 10 or 11, it indicates that the format of the second SCI is the first format. This first format is not either the existing SCI format 2-A or SCI format 2-B.

[0020] Optionally, the length of the wake-up indicator bit mentioned above is 2 bits.

[0021] In conjunction with the second aspect, in one possible design, if the aforementioned wake-up indication bit is used to instruct the second device to wake up within the duration timer of the DRX cycle for communication services, then the second device wakes up and performs PSCCH detection within the duration timer of the DRX cycle for communication services. And / or, if the aforementioned wake-up indication bit is used to instruct the second device to wake up within the duration timer of the DRX cycle for location services, then the second device wakes up and performs PSCCH detection within the duration timer of the DRX cycle for location services.

[0022] Optionally, the terms "wake-up" and "sleep" mentioned in this article refer to PSCCH detection (or blind PSCCH detection). In other words, "wake-up" mentioned in this article can be equivalently replaced by "perform PSCCH detection", and "sleep" can be equivalently replaced by "do not perform PSCCH detection".

[0023] In conjunction with the second aspect, in one possible design, after the second device receives the second SCI, the method further includes: the second device waking up or sleeping within a duration timer of the DRX cycle for communication services, and waking up or sleeping within a duration timer of the DRX cycle for positioning services, according to the indication of the wake-up indication bit in the second SCI.

[0024] In conjunction with the second aspect, in one possible design, before the second device receives the second SCI, the method further includes: the second device receiving SL RRC signaling, which is used to indicate the start bit of the second SCI and / or the size of the second SCI.

[0025] In conjunction with the second aspect, in one possible design, the aforementioned second SCI also includes a first field and a second field. The first field indicates the identifier of the first device, which is its complete Layer 2 identifier (complete Layer 2-ID), represented by 24 bits. The second field indicates the identifier of the second device, which is also its complete Layer 2 identifier (complete Layer 2-ID), represented by 24 bits. The first field is 24 bits long, and the second field is also 24 bits long.

[0026] In conjunction with the second aspect, in one possible design, the aforementioned second SCI further includes one or more of the following fields: a third field 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 indicating the start time and duration of the second device entering sleep mode during the DRX duration of the DRX period for communication services and the DRX period for location services, or the fourth field indicating the start time and duration of the second device entering sleep mode during the DRX duration of the DRX period for communication services; a fifth field indicating the start time and duration of the second device entering sleep mode during the DRX duration of the DRX period for location services; and a sixth field indicating the period during which the second device performs physical sidelink control channel (PSCCH) or first SCI detection. The third field includes one or more bits, each bit corresponding to one or more component carriers (CCs). The length of the third field can be equal to the sum of the number of carrier units used for communication services and the number of carrier units used for location services.

[0027] Thirdly, this application provides a wake-up indication method in dual DRX mode, applied to a sidelink system. The method includes: a first device broadcasting a third SCI, and then broadcasting a fourth SCI within a preset time window via multicast or unicast. The third SCI indicates that the fourth SCI is in a second format, and the second-format fourth SCI includes a first wake-up indication bit. This first wake-up indication bit indicates whether the second device wakes up within a duration timer of a DRX cycle. The preset time window can be within a power-saving offset duration preceding a DRX cycle.

[0028] Optionally, the third SCI is a first-stage SCI, and the fourth SCI is a second-stage SCI.

[0029] Optionally, the length of the second-order SCI format field in this third SCI is k bits, where k is an integer greater than 2. The value of this second-order SCI format field is greater than or equal to decimal 2 and less than or equal to 2. k When k is any integer from -1, it indicates that the format of the fourth SCI is the second format. This second format is not either the existing SCI format 2-A or SCI format 2-B. Here, k equals 3.

[0030] Optionally, the aforementioned first wake-up indication bit is specifically used to indicate whether the second device wakes up within the duration timer of the DRX cycle used for the first service. The first service can be a communication service or a location service.

[0031] Optionally, the length of the first wake-up indicator bit mentioned above is 1 bit.

[0032] As can be seen, this solution uses a newly designed second-order SCI for the DRX cycle of communication services or the DRX cycle of positioning services to indicate whether the second device should be woken up during its cycle. Its meaning is clear, which helps to reduce power consumption and achieve a trade-off between power consumption and communication or positioning performance.

[0033] In conjunction with the third aspect, in one possible design, the method further includes: the first device broadcasting a fifth SCI, and then broadcasting a sixth SCI within a preset time window in multicast or unicast form. The fifth SCI indicates that the format of the sixth SCI is a third format. The fifth SCI in the third format includes a second wake-up indicator bit. This second wake-up indicator bit indicates whether the second device wakes up within a duration timer of the DRX cycle used for the second service. Wherein, the second service is a communication service, and the first service is a location service; or, the second service is a location service, and the first service is a communication service.

[0034] Optionally, the fifth SCI is a first-stage SCI, and the sixth SCI is a second-stage SCI.

[0035] 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 When k is an integer in the range -1, it indicates that the format of the sixth SCI is the third format. This third format is neither the existing SCI format 2-A nor SCI format 2-B, nor the second format mentioned above. Here, k equals 3.

[0036] Optionally, the length of the second wake-up indicator bit mentioned above is 1 bit.

[0037] As can be seen, this solution designs a new second-order SCI for the DRX cycle of communication services and the DRX cycle of positioning services to indicate whether the second device is woken up within its cycle. Its meaning is clear, and the wake-up indications in the DRX cycles of the two services do not interfere with each other. It is highly flexible, applicable to various scenarios, and helps to reduce power consumption, achieving a trade-off between power consumption and communication and positioning performance.

[0038] In conjunction with the third aspect, in one possible design, before the first device sends the fourth SCI, the method further includes: the first device sending a first SL RRC signaling to the second device, the first SL RRC signaling being used to indicate the start bit of the fourth SCI and / or the size of the fourth SCI.

[0039] In conjunction with the third aspect, in one possible design, before the first device sends the sixth SCI, the method further includes: the first device sending a second SL RRC signaling to the second device, the second SL RRC signaling being used to indicate the start bit of the sixth SCI and / or the size of the sixth SCI.

[0040] As can be seen, this scheme sets up SL RRC signaling to match the newly designed second-order SCI (i.e., fourth SCI or sixth SCI) format, which is used to indicate the start bit and size of the wake-up indicator bit in the second-order SCI, so as to support the implementation of wake-up indicator in dual DRX mode.

[0041] In conjunction with the third aspect, in one possible design, both the aforementioned fourth SCI and the aforementioned sixth SCI include a first field and a second field. The first field indicates the identifier of the first device, which is its complete Layer 2 identifier (complete Layer 2-ID), represented by 24 bits. The second field indicates the identifier of the second device, which is also its complete Layer 2 identifier (complete Layer 2-ID), represented by 24 bits. The length of the first field is 24 bits, and the length of the second field is also 24 bits.

[0042] In conjunction with the third aspect, in one possible design, both the fourth SCI and the sixth SCI mentioned above include one or more of the following fields: the third field indicates whether the second device wakes up on the carrier unit corresponding to each bit of the third field; the fourth field indicates the start time and duration of the second device entering sleep mode during the DRX period for the first service or the DRX duration during the DRX period for the second service; and the sixth field indicates the period during which the second device performs PSCCH detection, the third SCI, or the fifth SCI detection. The third field includes one or more bits, each bit corresponding to one or more carrier units. The length of the third field can be equal to the number of carrier units used for communication services or the number of carrier units used for positioning services.

[0043] Fourthly, this application provides a wake-up indication method in dual DRX mode, applied to a sidelink system. The method includes: a second device receiving a third SCI, and then receiving a fourth SCI. The third SCI indicates that the format of the fourth SCI is a second format, and the fourth SCI in the second format includes a first wake-up indication bit. The first wake-up indication bit indicates whether the second device wakes up within the duration timer of the DRX cycle.

[0044] Optionally, the third SCI is a first-stage SCI, and the fourth SCI is a second-stage SCI.

[0045] Optionally, the length of the second-order SCI format field in this third SCI is k bits, where k is an integer greater than 2. The value of this second-order SCI format field is greater than or equal to decimal 2 and less than or equal to 2. k When k is any integer from -1, it indicates that the format of the fourth SCI is the second format. This second format is not either the existing SCI format 2-A or SCI format 2-B. Here, k equals 3.

[0046] Optionally, the aforementioned first wake-up indication bit is specifically used to indicate whether the second device wakes up within the duration timer of the DRX cycle used for the first service. The first service can be a communication service or a location service.

[0047] Optionally, the length of the first wake-up indicator bit mentioned above is 1 bit.

[0048] In conjunction with the fourth aspect, in one possible design, the method further includes: the second device receiving a fifth SCI, and then receiving a sixth SCI. The fifth SCI is used to indicate that the format of the sixth SCI is a third format. The fifth SCI in 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 the DRX cycle used for the second service. Wherein, the second service is a communication service, and the first service is a location service; or, the second service is a location service, and the first service is a communication service.

[0049] Optionally, the fifth SCI is a first-stage SCI, and the sixth SCI is a second-stage SCI.

[0050] 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 When k is an integer in the range -1, it indicates that the format of the sixth SCI is the third format. This third format is neither the existing SCI format 2-A nor SCI format 2-B, nor the second format mentioned above. Here, k equals 3.

[0051] Optionally, the length of the second wake-up indicator bit mentioned above is 1 bit.

[0052] In conjunction with the fourth aspect, in one possible design, before the second device receives the fourth SCI, the method further includes: the second device receiving a first SL RRC signaling, the first SL RRC signaling being used to indicate the start bit of the fourth SCI and / or the size of the fourth SCI.

[0053] In conjunction with the fourth aspect, in one possible design, before the second device receives the sixth SCI, the method further includes: the second device receiving a second SL RRC signaling, the second SL RRC signaling being used to indicate the start bit of the sixth SCI and / or the size of the sixth SCI.

[0054] In conjunction with the fourth aspect, in one possible design, if the aforementioned first wake-up indication bit is used to indicate that the second device wakes up within the duration timer of the DRX cycle, then the second device wakes up and performs PSCCH detection within the duration timer of the DRX cycle. And / or, if the aforementioned second wake-up indication bit is used to indicate that the second device wakes up within the duration timer of the DRX cycle used for the second service, then the second device wakes up and performs PSCCH detection within the duration timer of the DRX cycle used for the second service.

[0055] In conjunction with the fourth aspect, in one possible design, after the second device receives the fourth SCI, the method further includes: the second device waking up or going to sleep within a duration timer of the DRX cycle according to the indication of the first wake-up indication bit in the fourth SCI.

[0056] In conjunction with the fourth aspect, in one possible design, after the second device receives the sixth SCI, the method further includes: the second device waking up or going to sleep within a duration timer of the DRX cycle for the second service, according to the indication of the second wake-up indication bit in the sixth SCI.

[0057] In conjunction with the fourth aspect, in one possible design, both the aforementioned fourth SCI and the aforementioned sixth SCI include a first field and a second field. The first field indicates the identifier of the first device, which is the complete Layer 2 identifier (complete Layer 2-ID) of the first device, represented by 24 bits. The second field indicates the identifier of the second device, which is also the complete Layer 2 identifier (complete Layer 2-ID) of the second device, represented by 24 bits. The length of the first field is 24 bits, and the length of the second field is also 24 bits.

[0058] In conjunction with the fourth aspect, in one possible design, both the aforementioned fourth SCI and the aforementioned sixth SCI include one or more of the following fields: The third field indicates whether the second device wakes up on the carrier unit corresponding to each bit of the third field; the fourth field indicates the start time and duration of the second device entering sleep mode during the DRX period for the first service or the DRX duration during the DRX period for the second service; and the sixth field indicates the period during which the second device performs PSCCH detection, the third SCI, or the fifth SCI detection. The third field includes one or more bits, each bit corresponding to one or more carrier units. The length of the third field can be equal to the number of carrier units used for communication services or the number of carrier units used for positioning services.

[0059] Fifthly, this application provides a wake-up indication method in dual DRX mode, applied to a cellular system. The method includes: a network device transmitting downlink control information (DCI) within a preset time window, where the preset time window can be within a power saving offset duration preceding a DRX cycle. The DCI includes a wake-up indication bit, used to indicate whether the terminal device wakes up within a duration timer of a DRX cycle used for communication services and within a duration timer of a DRX cycle used for location services. The format of the DCI is the same as that used in NR systems to indicate whether a terminal device wakes up within a duration timer of a DRX cycle used for communication services, i.e., DCI format 2-6.

[0060] Optionally, the DCI described above adopts a block design, and each block of the DCI includes a wake-up indicator bit. The length of the wake-up indicator bit is 2 bits.

[0061] As can be seen, this solution extends the functionality of the traditional DCI fromat 2-6, enabling it to simultaneously indicate whether the terminal device should wake up during the drx-on duration of the DRX cycle used for communication services and during the drx-on duration of the DRX cycle used for positioning services. On the one hand, it eliminates the need to design separate DCIs for communication and positioning services, reducing signaling overhead; on the other hand, it allows for separate indication of wake-up or sleep for communication and positioning services to achieve a trade-off between power consumption and communication and / or positioning performance.

[0062] In conjunction with the fifth aspect, in one possible design, the aforementioned DCI also includes a first indicator bit, which is used to indicate whether the terminal device is awake on the secondary cell corresponding to each bit included in the first indicator bit. The length of the first indicator bit is p bits, where p equals the number of secondary cells or secondary cell groups used for location services. P is an integer greater than or equal to 0.

[0063] As can be seen, this solution can further save power consumption by not only indicating wake-up and sleep on the primary cell through the wake-up indicator bit, but also indicating wake-up and sleep on the secondary cell through the first indicator bit.

[0064] Sixthly, this application provides a wake-up indication method in dual DRX mode, applied in a cellular system. The method includes: a terminal device receiving a DCI. The DCI includes a wake-up indication bit, which indicates whether the terminal device is woken up within a duration timer of a DRX cycle for communication services and whether it is woken up within a duration timer of a DRX cycle for location services. The format of the DCI is the same as that used in NR systems to indicate whether a terminal device is woken up within a duration timer of a DRX cycle for communication services, i.e., the format of the DCI is DCI format 2-6.

[0065] Optionally, the DCI described above adopts a block design, and each block of the DCI includes a wake-up indicator bit. The length of the wake-up indicator bit is 2 bits.

[0066] In conjunction with the sixth aspect, in one possible design, if the aforementioned wake-up indication bit is used to instruct the terminal device to wake up within the duration timer of the DRX period used for communication services, then the terminal device wakes up and performs Physical Downlink Control Channel (PDCCH) detection within the duration timer of the DRX period used for communication services. And / or, if the aforementioned wake-up indication bit is used to instruct the terminal device to wake up within the duration timer of the DRX period used for location services, then the terminal device wakes up and performs PDCCH detection within the duration timer of the DRX period used for location services.

[0067] In conjunction with the sixth aspect, in one possible design, after the terminal device receives the DCI, the method further includes: the terminal device parses the first DCI, and wakes up or sleeps within a duration timer of a DRX cycle for communication services, and wakes up or sleeps within a duration timer of a DRX cycle for positioning services, according to the indication of the first wake-up indication bit in the first DCI.

[0068] In conjunction with the sixth aspect, in one possible design, the aforementioned DCI also includes a first indicator bit, which is used to indicate whether the terminal device is awake on the secondary cell corresponding to each bit included in the first indicator bit. The length of the first indicator bit is p bits, where p equals the number of secondary cells or secondary cell groups used for location services. P is an integer greater than or equal to 0.

[0069] Seventhly, this application provides a wake-up indication method in dual DRX mode, applied to a cellular system. The method includes: a network device transmitting a first DCI within a preset time window, where the preset time window may be a power saving offset duration preceding a DRX cycle. The first DCI includes a first wake-up indication bit, used to indicate whether the terminal device wakes up within a duration timer of a DRX cycle used for positioning services. The format of the first DCI is not the format of a DCI used to indicate whether the terminal device wakes up within a duration timer of a DRX cycle used for communication services; that is, the format of the first DCI is not the existing DCI format 2-6.

[0070] Optionally, the first DCI described above adopts a block design, and each block of the first DCI includes a first wake-up indicator bit. The length of the first wake-up indicator bit is 1 bit.

[0071] As can be seen, this solution designs a new DCI format specifically for the DRX cycle of the positioning service in the cellular system to indicate whether to wake up or sleep during the drx-on duration in the DRX cycle of the positioning service. On the one hand, it has a clear meaning, high flexibility, and can be applied to various scenarios; on the other hand, it can reduce power consumption and achieve a trade-off between power consumption and communication performance and / or positioning performance.

[0072] In conjunction with the seventh aspect, in one possible design, the method further includes: the network device transmitting a second DCI, the second DCI being in the format of a DCI used in the NR system to indicate whether a terminal device is awake within a duration timer of the DRX cycle of a communication service, i.e., the second DCI being in the format of existing DCI formats 2-6. The second DCI includes a second wake-up indication bit used to indicate whether the terminal device is awake within a duration timer of the DRX cycle for the communication service.

[0073] Optionally, the second DCI described above 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 indicator bit is 1 bit.

[0074] In conjunction with the seventh aspect, in one possible design, before the network device sends the first DCI, the method further includes: the network device sending RRC signaling, which is used to indicate the start bit and / or size of the first wake-up indication bit.

[0075] As can be seen, this scheme sets up RRC signaling to match the newly designed DCI (i.e., the first DCI) format, which is used to indicate the start bit of the first wake-up indicator bit corresponding to the terminal device and the size of the block in which the first wake-up indicator bit is located, so as to support the implementation of wake-up indication in dual DRX mode.

[0076] In conjunction with the seventh aspect, in one possible design, the aforementioned first DCI further includes a first indicator bit, which is used to indicate whether the terminal device is awake on the secondary cell corresponding to each bit included in the first indicator bit. The length of the first indicator bit is p bits, where p equals the number of secondary cells or secondary cell groups used for location services. P is an integer greater than or equal to 0.

[0077] Eighthly, this application provides a wake-up indication method in dual DRX mode, applied in a cellular system. The method includes: a terminal device receiving a first DCI, the first DCI including a first wake-up indication bit, the first wake-up indication bit being used to indicate whether the terminal device wakes up within a duration timer of a DRX cycle used for positioning services. The format of the first DCI is not the format of a DCI used to indicate whether the terminal device wakes up within a duration timer of a DRX cycle used for communication services, that is, the format of the first DCI is not the existing DCI format 2-6.

[0078] Optionally, the first DCI described above adopts a block design, and each block of the first DCI includes a first wake-up indicator bit. The length of the first wake-up indicator bit is 1 bit.

[0079] In conjunction with aspect eight, in one possible design, the method further includes: the terminal device receiving a second DCI, the second DCI being in the format of a DCI used in an NR system to indicate whether the terminal device is awake within a duration timer of a DRX cycle for a communication service, i.e., the second DCI being in the format of existing DCI formats 2-6. The second DCI includes a second wake-up indication bit used to indicate whether the terminal device is awake within a duration timer of a DRX cycle for a communication service.

[0080] Optionally, the second DCI described above 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 indicator bit is 1 bit.

[0081] In conjunction with the eighth aspect, in one possible design, before the terminal device receives the first DCI, the method further includes: the terminal device receiving RRC signaling, which is used to indicate the start bit and / or size of the first wake-up indication bit.

[0082] In conjunction with aspect eight, in one possible design, if the aforementioned first wake-up indication bit is used to instruct the terminal device to wake up within the drx-on duration timer of the DRX period for communication services, then the terminal device wakes up and performs physical downlink control channel (PDCCH) detection within the drx-on duration timer of the DRX period for communication services. And / or, if the aforementioned second wake-up indication bit is used to instruct the terminal device to wake up within the drx-on duration timer of the DRX period for location services, then the terminal device wakes up and performs PDCCH detection within the drx-on duration timer of the DRX period for location services.

[0083] In conjunction with the eighth aspect, in one possible design, after the terminal device receives the first DCI, the method further includes: the terminal device parses the first DCI and wakes up or goes into sleep within the duration timer of the DRX cycle used for positioning services, according to the indication of the first wake-up indication bit in the first DCI.

[0084] In conjunction with the eighth aspect, in one possible design, the aforementioned first DCI further includes a first indicator bit, which is used to indicate whether the terminal device is awake on the secondary cell corresponding to each bit included in the first indicator bit. The length of the first indicator bit is p bits, where p equals the number of secondary cells or secondary cell groups used for location services. P is an integer greater than or equal to 0.

[0085] Ninthly, this application provides a communication device, which may be a first device or a chip in a first device. The communication device includes units and / or modules for executing the wake-up indication method in dual DRX mode provided by the first aspect, or the third aspect, or any possible implementation of the first aspect, or any possible implementation of the third aspect, thus also achieving the beneficial effects (or advantages) of the wake-up indication method in dual DRX mode provided by the first or third aspect.

[0086] In a tenth aspect, this application provides a communication device, which may be a second device or a chip within a second device. The communication device includes units and / or modules for executing the wake-up indication method in dual DRX mode provided by the second aspect, or the fourth aspect, or any possible implementation of the second aspect, or any possible implementation of the fourth aspect, thus also achieving the beneficial effects (or advantages) of the wake-up indication method in dual DRX mode provided by the second or fourth aspect.

[0087] Eleventhly, this application provides a communication device, which may include a processor, a memory, and a transceiver. The memory stores a computer program, and the transceiver transmits and receives various information or signaling. The computer program includes program instructions that, when executed by the processor, cause the communication device to perform the dual DRX mode wake-up indication method described in any one of the first to eighth aspects, or any possible implementation thereof. The transceiver may be a radio frequency module in the communication device, or a combination of a radio frequency module and an antenna, or an input / output interface of a chip or circuit.

[0088] In a twelfth aspect, this application provides a readable storage medium storing program instructions that, when run on a computer, cause the computer to execute the wake-up indication method in dual DRX mode described in any one of the first to eighth aspects above, or any possible implementation of any one of the aspects above.

[0089] In a thirteenth aspect, this application provides a program product containing instructions that, when executed, cause the wake-up indication method in dual DRX mode described in any possible implementation of any of the first to eighth aspects above to be executed.

[0090] In a fourteenth aspect, this application provides an apparatus, which can be implemented as a chip or as a device, comprising a processor. The processor is configured to read and execute a program stored in a memory to execute one or more of the first to eighth aspects described above, or one or more of any possible implementations of any of these aspects, providing a wake-up indication method in dual DRX mode. Optionally, the apparatus further includes a memory connected to the processor via a circuit. Further optionally, the apparatus includes a communication interface to which the processor is connected. The communication interface is configured to receive information and / or signaling to be processed, the processor obtains the information and / or signaling from the communication interface, processes the information and / or signaling, and outputs the processing result through the communication interface. The communication interface may be an input / output interface.

[0091] Optionally, the processor and memory mentioned above can be physically independent units, or the memory can be integrated with the processor.

[0092] In a fifteenth aspect, this application provides a communication system that includes the communication apparatus described in the third or seventh aspect above, and the communication apparatus described in the fourth or eighth aspect above.

[0093] Implementing the embodiments of this application can reduce power consumption and achieve a trade-off between power consumption and communication performance and / or positioning performance. Attached Figure Description

[0094] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0095] Figure 1 These are schematic diagrams of several positioning scenarios provided in the embodiments of this application;

[0096] Figure 2 This is a schematic diagram showing the alignment of the duration timers at the start time in two DRX cycles provided in an embodiment of this application;

[0097] Figure 3 This is a schematic flowchart of the first type of wake-up indication method in dual DRX mode provided in the embodiments of this application;

[0098] Figure 4 This is a schematic diagram of the format of the second SCI provided in the embodiments of this application;

[0099] Figure 5 This is a schematic diagram of the drx-on duration Timer alignment scenario for DRX-C and DRX-P provided in the embodiments of this application. Figure 1 ;

[0100] Figure 6 This is a schematic diagram of a scenario where location services exist during the dormancy period of DRX-C provided in this application embodiment. Figure 1 ;

[0101] Figure 7 This is a schematic diagram of the drx-on duration Timer memory of DRX-C provided in this application embodiment, illustrating a scenario involving location services. Figure 1 ;

[0102] Figure 8 This is a second schematic flowchart of the wake-up indication method in dual DRX mode provided in the embodiments of this application;

[0103] Figure 9 These are schematic diagrams of SCI format 2-C and SCI format 2-D provided in the embodiments of this application;

[0104] Figure 10 This is a schematic diagram of a scenario where location services exist during the dormancy period of DRX-C provided in this application embodiment. Figure 2 ;

[0105] Figure 11 This is a schematic diagram of a scenario where DRX-C and DRX-P do not overlap in time, as provided in the embodiments of this application;

[0106] Figure 12This is a schematic diagram of a location service scenario within the drx-on duration Timer memory of DRX-P provided in this application embodiment. Figure 2 ;

[0107] Figure 13 This is a schematic diagram of the drx-on duration Timer alignment scenario for DRX-C and DRX-P provided in the embodiments of this application. Figure 2 ;

[0108] Figure 14 This is a third schematic flowchart of the wake-up indication method in dual DRX mode provided in the embodiments of this application;

[0109] Figure 15 This is a schematic diagram of the DCI format provided in the embodiments of this application;

[0110] Figure 16 This is a schematic flowchart of the fourth wake-up indication method in dual DRX mode provided in the embodiments of this application;

[0111] Figure 17 This is a schematic diagram of the format of the first DCI provided in the embodiments of this application;

[0112] Figure 18 This is a format diagram of DCI format 2-6 in the NR system;

[0113] Figure 19 This is a schematic diagram of the structure of the communication device 1 provided in the embodiments of this application;

[0114] Figure 20 This is a schematic diagram of the structure of the communication device 2 provided in the embodiments of this application;

[0115] Figure 21 This is a schematic diagram of the structure of the communication device 3 provided in the embodiments of this application;

[0116] Figure 22 This is a schematic diagram of the structure of the communication device 4 provided in the embodiments of this application;

[0117] Figure 23 This is a schematic diagram of the structure of the communication device 1000 provided in the embodiments of this application. Detailed Implementation

[0118] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0119] To facilitate a clear description of the technical solutions in the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. For example, "first SCI" and "second SCI" are merely used to distinguish different information and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0120] In this application embodiment, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related 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 single or plural items. For example, at least one of a, b, or c can represent: a, b, c; a and b; a and c; b and c; or a and b and c. Here, a, b, and c can be single or multiple.

[0121] In this embodiment of the application, "dual DRX mode" refers to the situation where DRX mode configuration and parameter configuration are performed separately for communication services and location services.

[0122] To facilitate understanding of the wake-up indication method in dual DRX mode provided in the embodiments of this application, the application scenarios of the wake-up indication method in dual DRX mode provided in the embodiments of this application will be described below. It is understood that the application scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application and do not constitute a limitation on the technical solutions provided in the embodiments of this application.

[0123] The wake-up indication method in dual DRX mode provided in this application can be used in positioning scenarios that support wireless communication, such as 5G NR, sidelink, wireless fidelity (WiFi), ultra-wideband (UWB), and Bluetooth. In this application, the term "wireless communication" can also be abbreviated as "communication," and the term "communication" can also be described as "data transmission," "information transmission," or "transmission."

[0124] See Figure 1 , Figure 1 These are schematic diagrams illustrating several positioning scenarios provided in embodiments of this application. For example... Figure 1 As shown, Figure 1Several common positioning scenarios are illustrated: cellular positioning, sidelink communication and positioning, WiFi positioning, and UWB / Bluetooth positioning. From a network topology perspective, in a cellular positioning system, each terminal device is within the coverage area of ​​the base station. In a sidelink communication and positioning system, each terminal device can be within or outside the coverage area of ​​the base station. In WiFi positioning, each terminal device (e.g., a site) can be within or outside the coverage area of ​​a wireless access point (AP). In Bluetooth or UWB positioning, the terminal device can be within or outside the coverage area of ​​an anchor point. Optionally, each device participating in the positioning can send positioning reference signals such as a positioning reference signal (PRS), channel state information reference signal (CSI-RS), or tracking reference signal (TRS), and possess DRX capability. It should be understood that the wake-up indication method in dual DRX mode provided in this application embodiment can be applied to... Figure 1 In the various positioning scenarios shown, it should also be understood that Figure 1 This is merely an example; the wake-up indication method in dual DRX mode provided in this application embodiment can also be applied to other positioning scenarios that support wireless communication.

[0125] The network devices involved in this application are entities on the network side used to transmit or receive signals, such as base stations (BS), WiFi access points, UWB anchor points, indoor coverage cells, etc. A network device is a device deployed in a wireless access network that can wirelessly communicate with terminals. A base station (BS) can be fixed or mobile. Base stations can broadly encompass various names listed below, or be interchangeable with them, such as: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, auxiliary 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, etc. Network devices can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms employed by the network devices.

[0126] The terminal device involved in the embodiments of this application is a user-side entity used to receive or transmit signals, such as a mobile phone.

[0127] Terminal devices can be used to connect people, objects, and machines. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; on water (such as ships); and in the air (e.g., on airplanes, balloons, and satellites). Terminal devices can be user equipment (UE), mobile stations (MS), mobile terminals (MT), etc. UEs include handheld devices, vehicle-mounted devices, wearable devices (wristbands, smartwatches), sensors, data cards, or computing devices with wireless communication capabilities. For example, a UE can be a mobile phone, laptop, tablet, or computer with wireless transceiver capabilities. Terminal devices can also be virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminals in industrial control, wireless terminals in autonomous driving, wireless terminals in telemedicine, wireless terminals in smart grids, wireless terminals in smart cities, wireless terminals in smart homes, etc. The embodiments of this application do not limit the specific technologies or device forms used in the terminal devices.

[0128] Optionally, the UE can also be used as a base station. For example, the UE can act as a scheduling entity, providing sidelink signaling between UEs in vehicle-to-everything (V2X), device-to-device (D2D), or peer-to-peer (P2P) scenarios.

[0129] It should be understood that the network devices and terminal devices involved in the embodiments of this application all have DRX capabilities and support communication and positioning functions.

[0130] The above briefly describes the possible application scenarios of the embodiments of this application. In order to better understand the technical solutions of the embodiments of this application, the DRX and wake-up indication in cellular networks will be briefly introduced below.

[0131] In carrier aggregation (CA) scenarios, different serving cells use different carrier frequency bands. For example, the primary cell (Pcell) uses the FR1 band, while the secondary cell (Scell) uses the FR2 band. Therefore, different DRX parameters can be configured for the primary and secondary cells, and a secondary discontinuous reception group (DRX Group) mechanism can be introduced. Because the frequency of the FR2 band is higher than that of the FR1 band, and the UE's power consumption is higher when operating with a larger RF and baseband bandwidth, a discontinuous reception group 2 (DRX group2) is configured for the Scell. The corresponding DRX parameters are a short drx-on DurationTimer and a short drx-Inactivity Timer, enabling the UE to enter an inactive or sleep state more quickly in the Scell, thereby achieving greater power saving gains. Simultaneously, a wake-up signal (WUS) is used to indicate the wake-up or sleep state of the two DRX groups. When the periods of two DRX groups are inconsistent (e.g., Pcell is configured with a long DRX period and Scell ​​with a short DRX period), a single-bit WUS (Wake-Up Signal) is used for indication, and the wake-up and sleep cycles of the long-period DRX group follow the WUS indication of the short-period DRX group with the closest period. Because the Secondary DRX Group mechanism uses a single WUS (i.e., a single-bit WUS indication) to indicate the wake-up or sleep cycles of two serving cells, the Secondary DRX Group mechanism is only suitable for scenarios where the duration timers (drx-on Duration Timers) of the two DRX periods are aligned (or the same) at their start times. See also... Figure 2 , Figure 2 This is a schematic diagram showing the alignment of duration timers at the start time in two DRX cycles provided in an embodiment of this application. For example... Figure 2 As shown, the UE wakes up within the time period indicated by the drx-on Duration Timer to perform PDCCH detection. Furthermore, the Secondary DRX Group mechanism does not support cross-carrier scheduling, therefore power consumption remains relatively high when performing component carrier (CC) measurements.

[0132] Therefore, this application provides a wake-up indication method in dual DRX mode, which can indicate wake-up or sleep for positioning services and wake-up or sleep for communication services respectively in scenarios where the start times of the duration timers in the two DRX cycles are not aligned (or are not the same); it can also reduce power consumption and achieve a trade-off between power consumption and communication performance and / or positioning performance.

[0133] The technical solution provided in this application will be described in detail below with reference to more accompanying drawings.

[0134] The technical solutions provided in this application are described in detail through four embodiments. Embodiment 1 illustrates a scheme for uniformly designing wake-up indicators for the DRX cycles of communication services and location services in a sidelink system. Embodiment 2 illustrates a scheme for independently designing wake-up indicators for the DRX cycles of communication services and location services in a sidelink system. Embodiment 3 illustrates a scheme for uniformly designing wake-up indicators for the DRX cycles of communication services and location services in a cellular system. Embodiment 4 illustrates a scheme for independently designing wake-up indicators for the DRX cycles of location services in a cellular system. It is understood that the same or similar concepts or solutions involved in Embodiments 1 to 4 of this application can be referred to or combined with each other. The following provides a detailed description of each embodiment.

[0135] Optionally, the technical solution provided in this application can be implemented using a first device and a second device. The first device can be either a network device, such as a base station, or a terminal device, such as a UE. The second device is also a terminal device, such as a UE. Both the first and second devices possess DRX capabilities and support communication and positioning functions. It should be understood that in a sidelink system, the first device and the second device are different terminal devices participating in 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.

[0136] For ease of description, the DRX cycle used for communication services will be denoted as DRX-C (DRX-communication) and the DRX cycle used for positioning services will be denoted as DRX-P (DRX-positioning).

[0137] It should be understood that the "dual DRX mode" mentioned in the embodiments of this application refers to the situation where DRX cycles are set separately for communication services and positioning services.

[0138] Example 1

[0139] Embodiment 1 of this application mainly introduces a scheme for designing a unified wake-up indication for the DRX cycle of communication services and the DRX cycle of location services when communication services and location services coexist in a sidelink system for a period of time. That is, a wake-up signal is used to indicate wake-up or sleep during the DRX cycle of the two services respectively.

[0140] See Figure 3 , Figure 3 This is a schematic flowchart of the first type of wake-up indication method in dual DRX mode provided in the embodiments of this application. Figure 3 As shown, the wake-up indication method in dual DRX mode includes, but is not limited to, the following steps:

[0141] S101, the first device sends the first sidelink control information (SCI).

[0142] S102, the first device sends a second SCI, the first SCI being used to indicate that the format of the second SCI is a first format, the second SCI of the first format includes a wake-up indication bit, the wake-up indication bit being used to indicate whether the second device wakes up within the duration timer of the discontinuous reception DRX cycle for communication services and whether it wakes up within the duration timer of the DRX cycle for positioning services.

[0143] Optionally, in this embodiment, both communication and positioning services exist between the first and second devices, and both devices enter dual DRX mode. The first device broadcasts first sidelink control information (SCI). The first device then broadcasts a second SCI within a preset time window via multicast or unicast. This preset time window can be a powersaving offset period before a DRX cycle. The first SCI is a 1st-stage SCI, and the second SCI is a 2nd-stage SCI. The 1st-stage SCI contains resource indications for the 2nd-stage SCI, which is UE-specific. In other words, all UEs can parse the 1st-stage SCI to obtain the resource indications of the 2nd-stage SCI, but a single 2nd-stage SCI can only be parsed by a specific UE to obtain the information it contains. Specifically, the first-stage SCI can be used to indicate the format type of the second-stage SCI, so the first SCI can be used to indicate the format of the second SCI. The second-stage SCI format field in the first SCI is 2 bits long. When the value of the second-stage SCI format field is binary 10 or 11, it indicates that the format of the second SCI is the first format. This first format is not either of the existing SCI format 2-A and SCI format 2-B; for example, the format of the second SCI might be SCI format 2-C. It should be understood that the embodiments of this application do not limit the name of the format of the second SCI. To distinguish it from SCI format 2-A and SCI format 2-B, the format of the second SCI will be referred to as SCI format 2-C below. The second-stage SCI can be used to carry the indicator bits of the wake-up signal, so the second SCI includes a wake-up indicator bit. The wake-up indicator bit is used to indicate whether the second device wakes up within the duration timer of the DRX cycle used for communication services and within the duration timer of the DRX cycle used for location services.

[0144] 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" can also be simply referred to as "duration," and the term "duration" can also be described as "wake-up time."

[0145] The implementation methods of the first SCI and the second SCI are explained in detail below.

[0146] Optionally, since the wake-up indication in the sidelink system is UE-specific, the SCI carrying the wake-up indication is also UE-specific, requiring a two-stage SCI. The first-stage SCI (as described above) indicates the format type of the second-stage SCI, and the second-stage SCI (as described above) carries the indication bits of the wake-up signal. Furthermore, because the 3GPP sidelink system only has two formats for the second-stage SCI: SCI format 2-A and SCI format 2-B, and both SCI format 2-A and SCI format 2-B are used for scheduling and control information of communication services, this embodiment first extends the second-stage SCI format type, introducing a new second-stage SCI format to carry the wake-up indication bits.

[0147] Specifically, the length of the 2nd-stage SCI format field in the first SCI is 2 bits. In this embodiment, the 2nd-stage SCI format field is functionally extended. When the value of this 2nd-stage SCI format field is a reserved value, such as "10" or "11", it indicates that the format of the second SCI is SCI format 2-C (i.e., the first format). In this embodiment, the value of the 2nd-stage SCI format field in the first SCI is 10 or 11.

[0148] Refer to Table 1 below, which shows the values ​​and meanings of the 2nd-stage SCI format field in the 1st-stage SCI. As shown in Table 1, when the 2nd-stage SCI format field value is 00, it indicates that the 2nd-stage SCI format is SCI format2-A; when the 2nd-stage SCI format field value is 01, it indicates that the 2nd-stage SCI format is SCI format 2-B; when the 2nd-stage SCI format field value is 10, it indicates that the 2nd-stage SCI format is SCI format 2-C; and when the 2nd-stage SCI format field value is 11, it indicates that it is reserved or used for other functional extensions. It should be understood that it is also possible that when the 2nd-stage SCI format field value is 11, it indicates that the 2nd-stage SCI format is SCI format 2-C; and when the 2nd-stage SCI format field value is 10, it indicates that it is reserved or used for other functional extensions.

[0149] Table 1

[0150]

[0151] Optionally, the format of the second SCI is SCI format 2-C, which includes a wake-up indicator bit, a first field, and a second field. The wake-up indicator bit indicates whether the second device wakes up within the drx-onduration Timer of the DRX cycle for communication services and within the drx-on duration Timer of the DRX cycle for positioning services. The first field indicates the identifier of the first device, which is the complete Layer 2 identifier (complete Layer 2-ID) of the first device, represented by 24 bits. The second field indicates the identifier of the second device, which is also the complete Layer 2 identifier (complete Layer 2-ID) of the second device, represented by 24 bits. The first field can be called the source identifier field, and the second field can be called the target identifier field. It should be understood that the first and second fields can also have other names, which are not limited in this embodiment.

[0152] Optionally, the second SCI may further include 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 component carriers (CCs). This third field indicates whether the second device is awake on the one or more carriers corresponding to each bit in the third field. The length of the third field may be equal to the sum of the number of carriers used for communication services and the number of carriers used for positioning services. The fourth field indicates the start time and duration of the second device entering sleep mode within the drx-on duration timer of DRX-C and DRX-P. Alternatively, the fourth field indicates the start time and duration of the second device entering sleep mode within the drx-on duration timer of DRX-C, and the fifth field indicates the start time and duration of the second device entering sleep mode within the drx-on duration timer of DRX-P. The sixth field indicates the period during which the second device performs physical sidelink control channel (PSCCH) or first SCI detection. The third field can be called the sleep indicator field, the fourth field can be called the PSCCH skip indicator field or PSCCH skip indicator 1 field, the fifth field can be called the PSCCH skip indicator 2 field, and the sixth field can be called the detection cycle indicator field. It should be understood that the third field, the fourth field, the fifth field, and the sixth field can also have other names, which are not limited in the embodiments of this application.

[0153] See Figure 4 , Figure 4 This is a schematic diagram of the format of the second SCI provided in the embodiments of this application. For example... Figure 4 As shown, the second SCI (i.e., SCI format 2-C) includes a source ID field, a destination ID field, and a wake-up indication bit. Optionally, it also includes one or more of the following fields: a dormancy indication field, a PSCCH skipping indication field, and a monitoring periodic indication field.

[0154] The source ID field (i.e., the first field mentioned above) is 24 bits long and is used to represent the complete Layer 2 identifier (Layer 2-ID) of the source UE (i.e., the first device mentioned above). The complete Layer 2 identifier of the source UE (i.e., the first device mentioned above) can also be 24 bits. It should be understood that the length of the source ID field (i.e., the first field mentioned above) can also be greater than 24 bits, and this embodiment of the application does not limit this. The destination ID field (i.e., the second field mentioned above) is 24 bits long and is used to represent the complete Layer 2 identifier (Layer 2-ID) of the destination UE (i.e., the second device mentioned above). The complete Layer 2 identifier of the destination UE (i.e., the second device mentioned above) can also be 24 bits. It should be understood that the length of the destination ID field (i.e., the second field mentioned above) can also be greater than 24 bits, and this embodiment of the application does not limit this. As can be seen, because there may be no communication scheduling between the source UE (i.e., the first device mentioned above) and the target UE (i.e., the second device mentioned above), there is no way to send the media access control (MAC) header in the physical side link share channel (PSSCH). Therefore, the target UE cannot recover the complete Layer 2 identifier based on the MAC header. Therefore, this embodiment of the application avoids the situation where the complete Layer 2 identifier cannot be recovered without a MAC header by directly carrying the complete Layer 2 identifier of the UE in the second SCI.

[0155] Figure 4The wake-up indication bit is 2 bits long and is used to indicate whether the target UE (i.e., the second device mentioned above) wakes up within the drx-on duration timer of the DRX cycle for communication services and within the drx-on duration timer of the DRX cycle for location services. In the wake-up state, the target UE (i.e., the second device mentioned above) performs PSCCH detection. See Table 2 below, which shows a mapping relationship between the values ​​and meanings of the wake-up indication bits; of course, there can be other mapping relationships between the values ​​and meanings of the wake-up indication bits, which are not listed here. As shown in Table 2, when the wake-up indication bit is 11, it indicates that the target UE (i.e., the second device) wakes up within the drx-onduration timer of the DRX cycle for communication services to perform PSCCH detection, and wakes up within the drx-onduration timer of the DRX cycle for location services to perform PSCCH detection. When the wake-up indication bit is 00, it indicates that the target UE (i.e., the second device) sleeps within the drx-on duration Timer of the DRX cycle used for communication services and sleeps within the drx-on duration Timer of the DRX cycle used for location services. When the wake-up indication bit is 01, it indicates that the target UE (i.e., the second device) sleeps within the drx-on duration Timer of the DRX cycle used for communication services and wakes up within the drx-on duration Timer of the DRX cycle used for location services to perform PSCCH detection. When the wake-up indication bit is 10, it indicates that the target UE (i.e., the second device) wakes up within the drx-on duration Timer of the DRX cycle used for communication services to perform PSCCH detection and sleeps within the drx-on duration Timer of the DRX cycle used for location services. It should be understood that the specific use of "1" or "0" to represent wake-up in this application embodiment is not limited.

[0156] Table 2

[0157]

[0158]

[0159] It should be understood that if the wake-up indication bit indicates that the target UE (i.e., the second device mentioned above) wakes up within the drx-on duration Timer of the DRX cycle used for communication services, then the source UE (i.e., the first device mentioned above) is also awake during this period. Similarly, if the wake-up indication bit indicates that the target UE (i.e., the second device mentioned above) wakes up within the drx-on duration Timer of the DRX cycle used for positioning services, then the source UE (i.e., the first device mentioned above) is also awake during this period. Because the target UE (i.e., the second device mentioned above) needs to perform PSCCH detection in the wake-up situation, the source UE (i.e., the first device mentioned above) needs to send PSCCH to support the target UE's PSCCH detection in the wake-up situation. It should also be understood that the "wake-up" and "sleep" mentioned in the embodiments of this application refer to PSCCH detection (or PSCCH blind detection). That is, the "wake-up" mentioned in the embodiments of this application can be equivalently replaced by "perform PSCCH detection", and the "sleep" can be equivalently replaced by "do not perform PSCCH detection".

[0160] Figure 4 The dormancy indication field (i.e., the third field mentioned above) exists in the form of a bitmap, with a length of m+n bits. m represents the number of carrier units used for communication services, and n represents the number of carrier units used for location services. In this case, one bit of the dormancy indication field corresponds to one carrier unit. One bit of the dormancy indication field (i.e., the third field mentioned above) is used to indicate whether the target UE (i.e., the second device mentioned above) is awake on the carrier unit corresponding to that bit (in the case of carrier aggregation). For example, if the bit is 1, it indicates that the target UE (i.e., the second device mentioned above) is awake on the carrier unit corresponding to that bit for PSCCH detection; if the bit is 0, it indicates that the target UE (i.e., the second device mentioned above) is dormant on the carrier unit corresponding to that bit. Optionally, the dormancy indication field (i.e., the third field mentioned above) includes one or more bits, with one bit corresponding to a group of carrier units, and a group of carrier units includes one or more carrier units. In this case, one bit of the dormancy indication field (i.e., the third field mentioned above) indicates whether the target UE (i.e., the second device mentioned above) is awake on the group of carrier units corresponding to that bit. Alternatively, the sleep indication field (i.e., the third field mentioned above) may include multiple subfields, each subfield comprising 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 mentioned above) may include a communication sleep subfield and a positioning sleep subfield, where the length of the communication sleep subfield is equal to the number of carrier units m used for communication services, and the length of the positioning sleep subfield is equal to the number of carrier units n used for positioning services.

[0161] Figure 4The PSCCH skipping indication field (i.e., the fourth field mentioned above) is used to indicate the sleep period during which the target UE (i.e., the second device mentioned above) enters sleep mode within the drx-on duration Timer of DRX-C and DRX-P, in order to further save power consumption. This sleep period can be determined by at least two pieces of information: start time, sleep duration, and end time. Optionally, the sleep duration can be semi-statically configured or indicated by the PSCCH skipping indication field; if the sleep duration is semi-statically configured, the start time and / or end time can be indicated by the PSCCH skipping indication field. For example, the PSCCH skipping mode indicated by the PSCCH skipping indication field can be used to implicitly indicate (or indirectly indicate) the start time and sleep duration during which the target UE (i.e., the second device mentioned above) enters sleep mode within the drx-on duration Timer of DRX-C and DRX-P, where one PSCCH skipping mode corresponds to one start time and one sleep duration (or, one PSCCH skipping mode corresponds to one sleep period).

[0162] Optionally, the PSCCH skipping indication field may include two subfields. One subfield (i.e., the fourth field mentioned above) indicates the sleep period during which the target UE (i.e., the second device mentioned above) enters sleep mode within the drx-onduration Timer of DRX-C. The other subfield (i.e., the fifth field mentioned above) indicates the sleep period during which the target UE (i.e., the second device mentioned above) enters sleep mode within the duration (or wake-up time) of DRX-P. This sleep period can be determined by at least two of the following pieces of information: start time, sleep duration, and end time.

[0163] Figure 4 The monitoring periodic indication field (i.e., the sixth field mentioned above) is used to indicate the period during which the target UE (i.e., the second device mentioned above) performs PSCCH or first SCI (or first-order SCI) detection, in order to further reduce power consumption.

[0164] Optional, Figure 4 It also includes reserved fields for future expansion of other functions.

[0165] It should be understood that Figure 4 This is merely a schematic diagram of one format of the second SCI. The length and order of the various fields included in the second SCI are not limited in this embodiment.

[0166] Optionally, the second SCI can be designed individually for each UE, meaning the second SCI only includes information related to the second device. Because 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 and size of the second SCI using higher-layer parameters before sending it. It should be understood that the second SCI here is designed for a single UE, meaning it only includes information for one UE. Therefore, before sending the second SCI, the first device sends sidelink (SL) radio resource control (RRC) signaling. In this embodiment, a configuration parameter (such as sizeSCI-2-C) is added to the SL RRC signaling to indicate the start bit and / or the size (i.e., length) of the second SCI. Alternatively, the SL RRC signaling can be used to indicate the start and end bits of the second SCI. Or, the SL RRC signaling can be used to indicate the end bit and / or the size (i.e., length) of the second SCI.

[0167] Optionally, the second SCI described above can also be designed based on blocks, that is, the second SCI includes one or more blocks, each block is used to indicate information of a UE, and the structure of each block can be referred to above. Figure 4 As shown, each block of the second SCI includes a source identifier field, a target identifier field, and a wake-up indicator bit. Optionally, it also includes a sleep indicator field, a PSCCH skip indicator field, and a detection cycle indicator (one or more of these fields). Therefore, before sending the second SCI, the first device sends an SL RRC signaling message. This SL RRC signaling message is used to indicate the start bit and / or size of the block in the second SCI associated with the second device (i.e., the block containing the wake-up indicator bit). Alternatively, the SL RRC signaling message is used to indicate the start bit and end bit of the block in the second SCI associated with the second device (i.e., the block containing the wake-up indicator bit). Alternatively, the SL RRC signaling message is used to indicate the end bit of the block in the second SCI associated with the second device (i.e., the block containing the wake-up indicator bit) and / or the size (i.e., length) of the second SCI.

[0168] As an optional embodiment, wake-up or sleep mode can be indicated by whether or not a wake-up indication bit is included in the second SCI. For example, when the second SCI includes a wake-up indication bit, the target UE (i.e., the second device) is instructed to wake up within the drx-on duration Timer of the DRX cycle for communication services to perform PSCCH detection, and to wake up within the drx-on duration Timer of the DRX cycle for location services to perform PSCCH detection. When the second SCI does not include a wake-up indication bit, the target UE (i.e., the second device) is instructed to sleep within the drx-on duration Timer of the DRX cycle for communication services and within the drx-on duration Timer of the DRX cycle for location services.

[0169] S103, the second device receives the first SCI.

[0170] S104, the second device receives the second SCI.

[0171] Optionally, the second device receives the first SCI and, based on the time-frequency resource indication information of the second SCI contained in the first SCI and the indication information of the format of the second SCI, receives and parses the second SCI. The second device then wakes up or goes into sleep mode within the drx-on duration Timer of the DRX cycle used for communication services, and wakes up or goes into sleep mode within the drx-on duration Timer of the DRX cycle used for positioning services, according to the wake-up indication bit in the second SCI. Specifically, if the wake-up indication bit in the second SCI indicates that the second device should wake up within the drx-on duration Timer of the DRX cycle used for communication services, then the second device wakes up and performs PSCCH detection (or blind detection) within the drx-on duration Timer of the DRX cycle used for communication services. Similarly, if the wake-up indication bit in the second SCI indicates that the second device should wake up within the drx-on duration Timer of the DRX cycle used for positioning services, then the second device wakes up and performs PSCCH detection (or blind detection) within the drx-on duration Timer of the DRX cycle used for positioning services. Therefore, the meaning of the wake-up indication bit included in the second SCI in the embodiments of this application can also be understood as follows: the wake-up indication bit is used to instruct the second device to wake up within the drx-on duration Timer of the DRX cycle for communication services to perform PSCCH detection or sleep, and to wake up within the drx-on duration Timer of the DRX cycle for positioning services to perform PSCCH detection or sleep.

[0172] Optionally, the second device receives SL RRC signaling before receiving the second SCI. If the second SCI is designed individually for each UE, the SL RRC signaling is used to indicate the start bit and / or the size (i.e., length) of the second SCI. Alternatively, the SL RRC signaling is used to indicate the start bit and end bit of the second SCI. Alternatively, the SL RRC signaling is used to indicate the end bit and / or the size (i.e., length) of the second SCI. If the second SCI is designed based on blocks, the SL RRC signaling is used to indicate the start bit and / or size of the block in the second SCI associated with the second device (i.e., the block where the wake-up indicator bit is located). Alternatively, the SL RRC signaling is used to indicate the start bit and end bit of the block in the second SCI associated with the second device (i.e., the block where the wake-up indicator bit is located). Alternatively, the SL RRC signaling is used to indicate the end bit and / or the size (i.e., length) of the block in the second SCI associated with the second device (i.e., the block where the wake-up indicator bit is located).

[0173] As can be seen, the embodiments of this application use a newly designed second-order SCI (i.e., the second SCI) to indicate whether the target UE (i.e. the second device) should be woken up during the duration of the DRX cycle for communication services and during the duration of the DRX cycle for location services, respectively. On the one hand, it eliminates the need to design separate SCIs for communication services and location services, thereby reducing signaling overhead; on the other hand, it can reduce power consumption and achieve a trade-off between power consumption and communication performance and / or location performance.

[0174] The foregoing content describes the technical solutions of the embodiments of this application. The following describes some scenarios applicable to the embodiments of this application. The embodiments of this application are mainly applied to scenarios where DRX-C (i.e., the DRX cycle used for communication services) and DRX-P (i.e., the DRX cycle used for location services) overlap in time, or in other words, scenarios where both communication and location services occur within a certain period (e.g., within a DRX-C). It should be understood that the descriptions of the various scenarios below are merely examples and do not limit the technical solutions provided in the embodiments of this application.

[0175] Scenario 1-1: A scenario where the drx-on duration Timer of the DRX period (DRX-C) used for communication services is aligned with the drx-on duration Timer of the DRX period (DRX-P) used for location services at its start time. See also Figure 5 , Figure 5 This is a schematic diagram of the drx-on duration Timer alignment scenario for DRX-C and DRX-P provided in the embodiments of this application. Figure 1 .like Figure 5As shown, DRX for SL-C represents the DRX cycle used for communication services in the sidelink system, and DRX for SL-P represents the DRX cycle used for location services 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 indication bit) is used to indicate whether the second device should wake up within the drx-on duration timer of DRX-C and within the drx-on duration timer of DRX-P. Figure 5 In this context, SCI-WUS for DRX-C and DRX-P refers to the SCI-WUS for DRX-C and DRX-P (here, SCI-WUS can represent the SCI carrying the wake-up signal, such as the second SCI mentioned above). It should be understood that the format of SCI-WUS here is as described above. Figure 4 As shown, further details are omitted here. In this embodiment, the wake-up signal exists in the second SCI in the form of a wake-up indicator bit. Therefore, in this embodiment, the wake-up signal and the wake-up indicator bit can be used interchangeably.

[0176] As can be seen, in the case of drx-on duration timer alignment of two DRX cycles, the embodiments of this application use a unified wake-up signal to indicate whether the second device is woken up within the drx-on duration timer of DRX-C and whether it is woken up within the drx-on duration timer of DRX-P, which can save signaling overhead and reduce terminal complexity and power consumption.

[0177] Scenario 1-2: Scenarios where location services exist during the DRX-C's sleep period. See also... Figure 6 , Figure 6 This is a schematic diagram of a scenario where location services exist during the dormancy period of DRX-C provided in this application embodiment. Figure 1 .like Figure 6 As shown, DRX for SL-C represents the DRX cycle used for communication services in the sidelink system, and DRX for SL-P represents the DRX cycle used for location services 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 indication bit) is used to indicate whether the second device should wake up within the drx-on duration timer of DRX-C and within the drx-on duration timer of DRX-P. Figure 6In this context, SCI-WUS for DRX-C and DRX-P refers to the SCI-WUS for DRX-C and DRX-P (here, SCI-WUS can represent the SCI carrying the wake-up signal, such as the second SCI mentioned above). It should be understood that the format of SCI-WUS here is as described above. Figure 4 As shown, it will not be elaborated further here.

[0178] Scenario 1-3: The DRX-C's drx-on duration Timer contains location services, and multiple DRX-P cycles exist within the time period indicated by one DRX-C cycle. See also... Figure 7 , Figure 7 This is a schematic diagram of the drx-on duration Timer memory of DRX-C provided in this application embodiment, illustrating a scenario involving location services. Figure 1 .like Figure 7 As shown, DRX for SL-C represents the DRX cycle used for communication services in the sidelink system, and DRX for SL-P represents the DRX cycle used for location services 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 indication bit) is used to indicate whether the second device should wake up within the drx-on duration timer of DRX-C and within the drx-on duration timer of DRX-P. Figure 7 In the SCI-WUS for DRX-C and DRX-P, SCI-WUS for DRX-C and DRX-P are respectively (here, SCI-WUS can represent the SCI carrying the wake-up signal, such as the second SCI mentioned above).

[0179] It should be understood that the SCI-WUS format here can be as described above. Figure 4 As shown, its wake-up indicator bit is 2 bits long, indicating whether the second device should wake up within the next DRX-C drx-on duration Timer and whether it should wake up within the next DRX-P drx-on duration Timer, respectively. At this time, as... Figure 7 From left to right, the wake-up or sleep state of the next two DRX-P devices follows that of the first DRX-P device. For example, if the wake-up indicator bit indicates that the second device is in the next (i.e., Figure 7 If the second device wakes up within the drx-on duration timer of the first DRX-P device (from left to right), then the second device will wake up within the timer. Figure 7The second and third DRX-P devices will also wake up within the drx-on duration timer. If the wake-up indicator bit indicates that the second device is in the next (i.e., Figure 7 If the first DRX-P device (from left to right) goes into sleep mode within its drx-onduration Timer, then the second device will... Figure 7 The second and third DRX-Ps also hibernate within the drx-onduration Timer.

[0180] Alternatively, the SCI-WUS format here remains as described above. Figure 4 As shown, however, the length of the wake-up indicator bit in SCI-WUS is extended to greater than or equal to 2 bits, with one bit corresponding to one DRX cycle. For example... Figure 7 In the illustrated scenario, the wake-up indicator bit in SCI-WUS is 4 bits long. The first two bits indicate whether the second device should wake up within the next DRX-C drx-on duration Timer and the next first DRX-P drx-on duration Timer. The third bit indicates whether the second device should wake up within the next second DRX-P drx-on duration Timer, and the fourth bit indicates whether the second device should wake up within the next third DRX-P drx-on duration Timer. Therefore, this embodiment of the application, by extending the length of the wake-up indicator bit to separately indicate wake-up and sleep within each DRX cycle, can further reduce power consumption and avoid missed PSCCH detection, thereby improving positioning performance.

[0181] Example 2

[0182] Embodiment 2 of this application mainly introduces a scheme for designing wake-up indicators independently for the DRX cycle of communication services and the DRX cycle of location services in the sidelink system. That is, a wake-up indicator is designed for the DRX cycle of communication services to indicate wake-up or sleep within the DRX cycle of communication services, and a wake-up indicator is also designed for the DRX cycle of location services to indicate wake-up or sleep within the DRX cycle of location services.

[0183] See Figure 8 , Figure 8 This is a second schematic flowchart of the wake-up indication method in dual DRX mode provided in the embodiments of this application. For example... Figure 8 As shown, the wake-up indication method in dual DRX mode includes, but is not limited to, the following steps:

[0184] S201, the first device sends the third-side link control information (SCI).

[0185] S202, the first device sends a fourth SCI, the third SCI being used to indicate that the format of the fourth SCI is a second format, the fourth SCI in the second format including a first wake-up indication bit, the first wake-up indication bit being used to indicate whether the second device wakes up within the duration timer of the DRX cycle.

[0186] Optionally, in this embodiment, the first device and the second device may only have communication services or only location services, and both the first device and the second device enter dual DRX mode. The first device broadcasts the third SCI. The first device then broadcasts the fourth SCI within a preset time window in multicast or unicast form. This preset time window can be a power-saving offset period before a DRX cycle. The third SCI is a first-stage SCI, and the fourth SCI is a second-stage SCI. The first-stage SCI contains resource indications for the second-stage SCI, which are UE-specific. In other words, all UEs can parse the first-stage SCI to obtain the resource indications for the second-stage SCI, but a second-stage SCI can only be parsed by one or a specific group of UEs to obtain the information it contains. Specifically, the first-stage SCI can be used to indicate the format type of the second-stage SCI, so the third SCI can be used to indicate the format of the fourth SCI. The second-stage SCI format field in this third SCI has a length of k bits, where k is an integer greater than 2. The value of this second-stage SCI format field is greater than or equal to decimal 2 and less than or equal to 2. kWhen any integer in -1 is used, it indicates that the format of the fourth SCI is the second format. This second format is not either of the existing SCI format 2-A and SCI format 2-B; for example, the format of the fourth SCI is SCI format 2-C or SCI format 2-D. It should be understood that the embodiments of this application do not limit the name of the format of the fourth SCI. To facilitate differentiation from SCI format 2-A and SCI format 2-B, the format of the fourth SCI will be referred to as SCI format 2-C or SCI format 2-D below. The second-stage SCI can be used to carry the indicator bits of the wake-up signal, so the fourth SCI includes a first wake-up indicator bit. This first wake-up indicator bit is used to indicate whether the second device wakes up within the duration timer (drx-on duration Timer) of the DRX cycle. Specifically, this first wake-up indicator bit is specifically used to indicate whether the second device wakes up within the duration timer of the DRX cycle used for the first service. The first service can be a communication service or a location service.

[0187] 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" can also be simply referred to as "duration," and the term "duration" can also be described as "wake-up time."

[0188] The implementation methods of the third and fourth SCIs are explained in detail below.

[0189] Optionally, similar to Embodiment 1 above, since the wake-up indication in the sidelink system is UE-specific, the SCI carrying the wake-up indication is also UE-specific. Therefore, a two-stage SCI is required. The first-stage SCI (such as the third SCI mentioned above) indicates the format type of the second-stage SCI, and the second-stage SCI (such as the fourth SCI mentioned above) carries the indication bits of the wake-up signal. Furthermore, since the 3GPP sidelink system only has two formats for the second-stage SCI: SCI format 2-A and SCI format 2-B, and both SCI format 2-A and SCI format 2-B are used for scheduling information of communication services, this embodiment first extends the second-stage SCI format type, introducing a new second-stage SCI format to carry the wake-up indication bits.

[0190] Specifically, the traditional second-stage SCI format field is 2 bits long. This embodiment extends the functionality of the second-stage SCI format field to k bits, where k is an integer greater than 2, such as k equals 3. If the first service is a communication service, the format of the fourth SCI (i.e., the 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-stage SCI formats are needed to carry the wake-up indicator bits for different services respectively.

[0191] Referring to Table 3 below, Table 3 shows the values ​​and meanings of the 2nd-stage SCI format field in the 1st-stage SCI, where k = 3. As shown in Table 3, when the 2nd-stage SCI format field is 000, it indicates that the 2nd-stage SCI format is SCI format 2-A; when the 2nd-stage SCI format field is 001, it indicates that the 2nd-stage SCI format is SCI format 2-B; when the 2nd-stage SCI format field is 010, it indicates that the 2nd-stage SCI format is SCI format 2-C; when the 2nd-stage SCI format field is 011, it indicates that the 2nd-stage SCI format is SCI format 2-D; when the 2nd-stage SCI format field is other values ​​(such as 100, 101, 110, 111), it indicates that it is reserved or used for other functional expansions, such as introducing a new 2nd-stage SCI format to indicate positioning scheduling, measurement, etc., which will not be illustrated in the embodiments of this application. For ease of description, this application uses SCI format 2-C, a second-order SCI designed for communication services, as an example, and SCI format 2-D, a second-order SCI designed for positioning services, as an example for illustration. It should be understood that a value of 011 for the second-order SCI format field can also indicate that the second-order SCI format is SCI format 2-C; a value of 010 for the second-order SCI format field can indicate that the second-order SCI format is SCI format 2-D. This application does not limit this aspect.

[0192] Table 3

[0193]

[0194] Optionally, the fourth SCI is in SCI format 2-C or SCI format 2-D, and includes a first wake-up indicator bit, a first field, and a second field. If the fourth SCI is in SCI format 2-C, the first wake-up indicator bit indicates whether the second device wakes up within the drx-on duration Timer of the DRX cycle used for communication services. If the fourth SCI is in SCI format 2-D, the first wake-up indicator bit indicates whether the second device wakes up within the drx-on duration Timer of the DRX cycle used for positioning services. The first field indicates the identifier of the first device, which is the complete Layer 2 identifier (complete Layer 2-ID) of the first device, represented by 24 bits. The second field indicates the identifier of the second device, which is also the complete Layer 2 identifier (complete Layer 2-ID) of the second device, represented by 24 bits. The first field can be called the source identifier field, and the second field can be called the target identifier field. It should be understood that the first field and the second field can also have other names, which are not limited in this application embodiment.

[0195] Optionally, the aforementioned 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 component carriers (CCs). This third field is used to indicate whether the second device wakes up on the one or more carriers corresponding to each bit in the third field. The length of the third field can be equal to the number of carriers used for the first service. The fourth field is used to indicate the start time and duration of the second device entering sleep mode within the drx-on duration Timer of the DRX cycle used for the first service. The sixth field is used to indicate the period during which the second device performs PSCCH or third SCI detection. The third field can be called a sleep indicator field, the fourth field can be called a PSCCH skip indicator field, and the sixth field can be called a detection period indicator field; it should be understood that the third field, the fourth field, and the sixth field can also have other names, which are not limited in this embodiment.

[0196] See Figure 9 , Figure 9 These are schematic diagrams illustrating the SCI format 2-C and SCI format 2-D provided in the embodiments of this application. For example... Figure 9As shown, SCI format 2-C and SCI format 2-D are similar, both including a source ID field, a destination ID field, and a wake-up indication bit. Optional additional fields include one or more of the following: a dormancy indication field, a PSCCH skipping indication field, and a monitoring periodic indication field.

[0197] The source ID field (i.e., the first field mentioned above) and the destination ID field (i.e., the second field mentioned above) are as described above. Figure 4 The corresponding descriptions are available elsewhere and will not be repeated here.

[0198] Figure 9 The wake-up indication bit (i.e., the first wake-up indication bit mentioned above) has a length of 1 bit and is used to indicate whether the target UE (i.e., the second device mentioned above) wakes up within the drx-on duration Timer of the DRX cycle used for the first service. In the wake-up state, the target UE (i.e., the second device mentioned above) performs PSCCH detection. When the wake-up indication bit (i.e., the first wake-up indication bit mentioned above) is 0, it indicates that the target UE (i.e., the second device mentioned above) is in sleep mode within the drx-on duration Timer of the DRX cycle used for the first service. When the wake-up indication bit (i.e., the first wake-up indication bit mentioned above) is 1, it indicates that the target UE (i.e., the second device mentioned above) wakes up within the drx-on duration Timer of the DRX cycle used for the first service to perform PSCCH detection. Alternatively, the wake-up indication bit (i.e., the first wake-up indication bit mentioned above) can be 0 to indicate wake-up and 1 to indicate sleep mode. This embodiment of the application does not limit the correspondence between the value and meaning of the wake-up indication bit (i.e., the first wake-up indication bit mentioned above). For example, if the format of the fourth SCI is SCI format 2-C, the first wake-up indication bit in the fourth SCI is used to indicate whether the target UE (i.e. the second device) is woken up within the drx-on duration Timer of the DRX cycle for communication services; if the format of the fourth SCI is SCI format 2-D, the first wake-up indication bit in the fourth SCI is used to indicate whether the target UE (i.e. the second device) is woken up within the drx-on duration Timer of the DRX cycle for positioning services.

[0199] It should be understood that if Figure 9 The wake-up indication bit (i.e., the first wake-up indication bit mentioned above) instructs the target UE (i.e., the second device mentioned above) to wake up within the drx-on duration Timer of the DRX period used for the first service. Therefore, the source UE (i.e., the first device mentioned above) is also awake during this period. Because the target UE (i.e., the second device mentioned above) needs to perform PSCCH detection in the wake-up state, the source UE (i.e., the first device mentioned above) needs to send PSCCH to support the target UE's PSCCH detection in the wake-up state. It should also be understood that the "wake-up" and "sleep" mentioned in the embodiments of this application refer to PSCCH detection (or blind PSCCH detection). That is, "wake-up" mentioned in the embodiments of this application can be equivalently replaced by "perform PSCCH detection," and "sleep" can be equivalently replaced by "do not perform PSCCH detection."

[0200] Figure 9 The dormancy indication field (i.e., the third field mentioned above) exists in the form of a bitmap, with a length of m or n bits. m represents the number of carrier units used for communication services, and n represents the number of carrier units used for location services. In this case, one bit of the dormancy indication field corresponds to one carrier unit. One bit of the dormancy indication field (i.e., the third field mentioned above) is used to indicate whether the target UE (i.e., the second device mentioned above) is awake on the carrier unit corresponding to that bit (in the case of carrier aggregation). For example, if the bit is 1, it indicates that the target UE (i.e., the second device mentioned above) is awake on the carrier unit corresponding to that bit for PSCCH detection; if the bit is 0, it indicates that the target UE (i.e., the second device mentioned above) is dormant on the carrier unit corresponding to that bit. Optionally, the dormancy indication field (i.e., the third field mentioned above) includes one or more bits, with one bit corresponding to a group of carrier units, and a group of carrier units includes one or more carrier units. In this case, one bit of the dormancy indication field (i.e., the third field mentioned above) indicates whether the target UE (i.e., the second device mentioned above) is awake on the group of carrier units corresponding to that bit.

[0201] Figure 9The PSCCH skipping indication field (i.e., the fourth field mentioned above) is used to indicate the sleep period during which the target UE (i.e., the second device mentioned above) enters sleep mode within the drx-on duration Timer used for the first service, in order to further save power consumption. This sleep period can be determined by at least two pieces of information: start time, sleep duration, and end time. Optionally, the sleep duration can be semi-statically configured or indicated by the PSCCH skipping indication field; if the sleep duration is semi-statically configured, the start time and / or end time can be indicated by the PSCCH skipping indication field. For example, the PSCCH skipping mode indicated by the PSCCH skipping indication field can be used to implicitly indicate (or indirectly indicate) the start time and sleep duration during which the target UE (i.e., the second device mentioned above) enters sleep mode within the drx-on duration Timer of DRX-C and DRX-P, where one PSCCH skipping mode corresponds to one start time and one sleep duration (or, one PSCCH skipping mode corresponds to one sleep period).

[0202] Figure 9 The monitoring periodic indication field (i.e., the sixth field mentioned above) is used to indicate the period during which the target UE (i.e., the second device mentioned above) performs PSCCH or third SCI (or first-order SCI) detection, in order to further reduce power consumption.

[0203] Optional, Figure 9 It also includes reserved fields for future expansion of other functions.

[0204] It should be understood that Figure 9 This is merely a schematic diagram of one format of SCI format 2-C and SCI format 2-D. The length and arrangement order of the various fields included in SCI format 2-C and SCI format 2-D are not limited in this embodiment.

[0205] Optionally, the aforementioned fourth SCI can be designed individually for each UE, meaning the fourth SCI only includes information related to the second device. Because the aforementioned 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 and size of the fourth SCI via higher-layer parameters before sending the third SCI. Specifically, the first device sends a first SL RRC signaling before sending the fourth SCI. This first SL RRC is used to indicate the start bit and / or the size (i.e., length) of the fourth SCI. Alternatively, the first SL RRC signaling is used to indicate the start and end bits of the fourth SCI. Or, the first SL RRC signaling is used to indicate the end bit and / or the size (i.e., length) of the fourth SCI.

[0206] Optionally, the fourth SCI described above can also be designed based on blocks, that is, the fourth SCI includes one or more blocks, each block is used to indicate information of a UE, and the structure of each block can be referred to the above. Figure 9 As shown, each block of the fourth SCI includes a source identifier field, a target identifier field, and a wake-up indicator bit. Optionally, it also includes one or more of a sleep indicator field, a PSCCH skip indicator field, and a detection cycle indicator field. Therefore, before sending the fourth SCI, the first device sends a first SL RRC signaling. This first SL RRC signaling is used to indicate the start bit and / or size of the block in the fourth SCI associated with the second device (i.e., the block containing the first wake-up indicator bit). Alternatively, the first SL RRC signaling is used to indicate the start and end bits of the block in the fourth SCI associated with the second device (i.e., the block containing the first wake-up indicator bit). Alternatively, the first SL RRC signaling is used to indicate the end bit and / or the size (i.e., length) of the block in the fourth SCI associated with the second device (i.e., the block containing the first wake-up indicator bit).

[0207] As an optional embodiment, wake-up or sleep mode can be indicated by whether or not a first wake-up indication bit is included in the fourth SCI. For example, when the fourth SCI includes the first wake-up indication bit, the target UE (i.e., the second device) is instructed to wake up for PSCCH detection during the duration (or wake-up time) of the DRX cycle used for the first service. When the fourth SCI does not include the first wake-up indication bit, the target UE (i.e., the second device) is instructed to sleep during the duration (or wake-up time) of the DRX cycle used for the first service.

[0208] S203, the second device receives the third SCI.

[0209] S204, the second device receives the fourth SCI.

[0210] Optionally, the second device receives the aforementioned third SCI and, based on the time-frequency resource indication information and format indication information of the fourth SCI contained in the third SCI, receives and parses the fourth SCI. The second device then wakes up or goes into sleep mode within the drx-on duration Timer of the DRX cycle used for the first service, according to the indication of the first wake-up indication bit in the fourth SCI. Specifically, if the first wake-up indication bit in the second SCI indicates that the second device should wake up within the drx-on duration Timer of the DRX cycle used for the first service, then the second device will wake up within the drx-on duration Timer of the DRX cycle used for the first service and perform PSCCH detection (or blind detection). Therefore, the meaning of the first wake-up indication bit included in the fourth SCI in this embodiment can also be understood as: the first wake-up indication bit is used to instruct the second device to wake up within the drx-on duration Timer of the DRX cycle used for the first service to perform PSCCH detection or go into sleep mode.

[0211] Optionally, the second device receives a first SL RRC signaling before receiving the fourth SCI. If the fourth SCI is designed individually for each UE, the first SL RRC is used to indicate the start bit and size (i.e., length) of the fourth SCI. Alternatively, the first SL RRC signaling is used to indicate the start bit and end bit of the fourth SCI. Alternatively, the first SL RRC signaling is used to indicate the end bit and / or size (i.e., length) of the fourth SCI. If the fourth SCI is designed based on a block structure, the first SL RRC signaling is used to indicate the start bit and / or size of the block in the fourth SCI associated with the second device (i.e., the block containing the first wake-up indicator bit). Alternatively, the first SL RRC signaling is used to indicate the start bit and end bit of the block in the fourth SCI associated with the second device (i.e., the block containing the first wake-up indicator bit). Alternatively, the first SL RRC signaling is used to indicate the end bit and / or size (i.e., length) of the block in the fourth SCI associated with the second device (i.e., the block containing the first wake-up indicator bit).

[0212] As can be seen, the embodiments of this application have designed a new second-order SCI for the DRX cycle of communication services and the DRX cycle of positioning services to indicate whether the target UE (i.e., the second device) is woken up in their respective cycles. The meaning is clear, and the wake-up indications in the DRX cycles of the two services do not interfere with each other, which is highly flexible.

[0213] Optionally, the wake-up indication method in dual DRX mode further includes the following steps:

[0214] S205, the first device sends the fifth SCI.

[0215] S206, the first device sends a sixth SCI, the fifth SCI being used to indicate that the format of the sixth SCI is a third format, the fifth SCI of the third format including a second wake-up indication bit, the second wake-up indication bit being used to indicate whether the second device wakes up within the duration timer of the DRX cycle for the second service.

[0216] Optionally, in embodiments of this application where both communication and positioning services exist between the first and second devices, the first device also broadcasts the fifth SCI. The first device then broadcasts the sixth SCI within a preset time window via multicast or unicast. This preset time window can be a power saving offset period before a DRX cycle. The fifth SCI is a first-stage SCI, and the sixth SCI is a second-stage SCI. The fifth SCI can be used to indicate the format of the sixth SCI. The second-stage SCI format field in the fifth SCI has a length of k bits, where k is an integer greater than 2. When the value of the second-stage SCI format field in the fifth SCI is different from the value of the second-stage SCI field in the third SCI, and the value of the second-stage SCI format field in the fifth SCI is greater than or equal to decimal 2 and less than or equal to 2... k When the integer value is -1, it indicates that the format of the sixth SCI is the third format. This third format is neither the existing SCI format 2-A nor SCI format 2-B, nor the second format mentioned above. The sixth SCI includes a second wake-up indicator bit. This second wake-up indicator bit is used to indicate whether the second device wakes up within the drx-on duration timer of the DRX cycle used for the second service. The second service is different from the first service mentioned above. If the format of the fourth SCI (i.e., the second format) is SCI format 2-C and the format of the sixth SCI (i.e., the third format) is SCI format 2-D, the first service can be a communication service, and the second service can be a location 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, then the first service can be a location service, and the second service can be a communication service.

[0217] Optionally, the implementation of the fifth SCI can refer to the implementation of the third SCI, which will not be repeated here. The difference between the fifth SCI and the third SCI is that the value of the second-order SCI format field in the fifth SCI is different from that in the third SCI. For example, as shown in Table 3 above, the value of the second-order SCI format field in the third SCI is 010, indicating that the format of the fourth SCI is SCI format 2-C, or that the fourth SCI includes a first wake-up indicator bit; the value of the second-order SCI format field in the fifth SCI is 011, indicating that the format of the sixth SCI is SCI format 2-D, or that the sixth SCI includes a second wake-up indicator bit. The implementation of the sixth SCI can refer to the implementation of the fourth SCI, the difference being that the formats of the sixth SCI and the fourth SCI are different, and the meanings of the wake-up indicator bits included in the sixth SCI and the fourth SCI are different. For example, the fourth SCI is in 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 within the duration (or wake-up time) of the DRX period used for communication services; the sixth SCI is in SCI format 2-D, and the second wake-up indication 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 period used for location services. Alternatively, the fourth SCI is in SCI format 2-D, 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 within the drx-on duration Timer of the DRX period used for location services; the sixth SCI is in SCI format 2-C, and the second wake-up indication 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 period used for communication services.

[0218] Optionally, the aforementioned sixth SCI can be designed individually for each UE, meaning the sixth SCI only includes information related to the second device. Because the aforementioned 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 via higher-layer parameters before sending the fifth SCI. Specifically, the first device sends a second SL RRC signaling before sending the fifth SCI. This second SL RRC is used to indicate the start bit and / or the size (i.e., length) of the sixth SCI. Alternatively, the second SL RRC signaling is used to indicate the start and end bits of the sixth SCI. Or, the second SL RRC signaling is used to indicate the end bit and / or the size (i.e., length) of the sixth SCI.

[0219] Optionally, the aforementioned sixth SCI can also be designed based on blocks, that is, the aforementioned sixth SCI includes one or more blocks, each block is used to indicate information of a UE, and the structure of each block can be referred to the above. Figure 9 As shown, each block of the sixth SCI includes a source identifier field, a target identifier field, and a wake-up indicator bit. Optionally, it also includes a sleep indicator field, a PSCCH skip indicator field, and a detection cycle indicator (one or more of these fields). Therefore, before sending the sixth SCI, the first device sends a second SL RRC signaling. This second SL RRC signaling is used to indicate the start bit and / or size of the block in the sixth SCI associated with the second device (i.e., the block containing the second wake-up indicator bit). Alternatively, the second SL RRC signaling is used to indicate the start and end bits of the block in the sixth SCI associated with the second device (i.e., the block containing the second wake-up indicator bit). Alternatively, the second SL RRC signaling is used to indicate the end bit and / or the size (i.e., length) of the block in the sixth SCI associated with the second device (i.e., the block containing the second wake-up indicator bit).

[0220] As an optional embodiment, wake-up or sleep mode can be indicated by whether or not a second wake-up indication bit is included in the sixth SCI. For example, when the sixth SCI includes the second wake-up indication bit, the target UE (i.e., the second device) is instructed to wake up for PSCCH detection during the duration (or wake-up time) of the DRX cycle used for the second service. When the sixth SCI does not include the second wake-up indication bit, the target UE (i.e., the second device) is instructed to sleep during the duration (or wake-up time) of the DRX cycle used for the second service.

[0221] It should be understood that the execution order between steps S203-S204 and steps S205-S206 is not limited. For example, steps S203-S204 may be executed before steps S205-S206, or after steps S205-S206, or steps S203-S204 and steps S205-S206 may be executed simultaneously or in parallel.

[0222] S207, the second device receives the fifth SCI.

[0223] S208, the second device receives the sixth SCI.

[0224] Optionally, the second device receives the aforementioned fifth SCI and, based on the time-frequency resource indication and format indication information of the sixth SCI contained in the fifth SCI, receives and parses the sixth SCI. The second device then wakes up or goes into sleep mode within the duration timer (on_durationTimer) of the DRX cycle used for the second service, according to the indication of the second wake-up indication bit in the sixth SCI. Specifically, if the second wake-up indication bit in the sixth SCI indicates that the second device should wake up within the duration (or wake-up time) of the DRX cycle used for the second service, then the second device will wake up and perform PSCCH detection (or blind detection) within the duration (or wake-up time) of the DRX cycle used for the second service. Therefore, the meaning of the second wake-up indication bit included in the sixth SCI in this embodiment can also be understood as: the second wake-up indication bit is used to instruct the second device to wake up within the duration (or wake-up time) of the DRX cycle used for the second service to perform PSCCH detection or go into sleep mode.

[0225] Optionally, the second device receives a second SL RRC signaling before receiving the sixth SCI. If the sixth SCI is designed individually for each UE, the second SL RRC is used to indicate the start bit and / or the size (i.e., length) of the sixth SCI. Alternatively, the second SL RRC signaling is used to indicate the start and end bits of the sixth SCI. Alternatively, the second SL RRC signaling is used to indicate the end bit and / or the size (i.e., length) of the sixth SCI. If the sixth SCI is designed in a block-based manner, the first SL RRC signaling is used to indicate the start bit and / or size of the block in the sixth SCI associated with the second device (i.e., the block containing the second wake-up indicator bit). Alternatively, the first SL RRC signaling is used to indicate the start and end bits of the block in the sixth SCI associated with the second device (i.e., the block containing the second wake-up indicator bit). Alternatively, the first SL RRC signaling is used to indicate the end bit and / or the size (i.e., length) of the block in the sixth SCI associated with the second device (i.e., the block containing the second wake-up indicator bit).

[0226] The foregoing content describes the technical solutions of the embodiments of this application. For ease of understanding, some scenarios applicable to the embodiments of this application are described below. The embodiments of this application can be applied to scenarios where DRX-C (i.e., the DRX cycle used for communication services) and DRX-P (i.e., the DRX cycle used for location services) overlap in time, and also to scenarios where DRX-C and DRX-P do not overlap in time. That is, scenarios where only communication services or location services exist within a certain period, such as a DRX-C containing only communication services and a DRX-P containing only location services. It should be understood that the descriptions of the various scenarios below are merely examples and do not limit the technical solutions provided in the embodiments of this application.

[0227] Scenario 2-1: A scenario where location services exist during the DRX-C's sleep period. See also... Figure 10 , Figure 10 This is a schematic diagram of a scenario where location services exist during the dormancy period of DRX-C provided in this application embodiment. Figure 2 .like Figure 10 As shown, DRX for SL-C represents the DRX cycle used for communication services in the sidelink system, and DRX for SL-P represents the DRX cycle used for location services 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), two SCIs are sent to indicate whether the second device should wake up within the drx-on duration timer of DRX-C and whether the second device should wake up within the drx-on duration timer of DRX-P, respectively. Figure 10 In the DRX-C section, SCI-WUS for DRX-C refers to SCI-WUS for DRX-C, used to indicate whether the target UE (i.e., the second device) is awake within the drx-on duration Timer of the DRX cycle used for communication services; SCI-WUS for DRX-P refers to SCI-WUS for DRX-P, used to indicate whether the target UE (i.e., the second device) is awake within the drx-on duration Timer of the DRX cycle used for location services.

[0228] Scenario 2-2: A scenario where DRX-C and DRX-P do not overlap in time, i.e., a scenario where DRX-C and DRX-P are time-series. See also Figure 11 , Figure 11 This is a schematic diagram illustrating a scenario where DRX-C and DRX-P do not overlap in time, as provided in the embodiments of this application. Figure 11 As shown, DRX for SL-C represents the DRX cycle used for communication services in the sidelink system, and DRX for SL-P represents the DRX cycle used for location services in the sidelink system. Before the first device (i.e., the source UE) indicates DRX-C to the second device (i.e., the target UE), an SCI is sent to indicate whether the second device should wake 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 should wake up within the drx-on duration Timer of DRX-P. Figure 11 In the DRX-C section, SCI-WUS for DRX-C indicates SCI-WUS for DRX-C, used to indicate whether the target UE (i.e., the second device) is woken up within the drx-on duration Timer of the DRX cycle used for communication services; SCI-WUS for DRX-P indicates SCI-WUS for DRX-P, used to indicate whether the target UE (i.e., the second device) is woken up within the drx-on duration Timer of the DRX cycle used for location services.

[0229] Scenario 2-3: A location service is present within the DRX-C's on_duration Timer, and multiple DRX-P cycles exist within the time period indicated by one DRX-C cycle. See also... Figure 12 , Figure 12 This is a schematic diagram of a location service scenario within the drx-on duration Timer memory of DRX-P provided in this application embodiment. Figure 2 .like Figure 12As shown, DRX for SL-C represents the DRX cycle used for communication services in the sidelink system, and DRX for SL-P represents the DRX cycle used for location services in the sidelink system. Before the first device (i.e., the source UE) indicates DRX-C to the second device (i.e., the target UE), an SCI is sent to indicate whether the second device should wake up within the drx-on duration timer of the next 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 should wake up within the drx-on duration timer of the next DRX-P. Figure 12 In the DRX-C section, SCI-WUS for DRX-C indicates SCI-WUS for DRX-C, used to indicate whether the target UE (i.e., the second device) is woken up within the drx-onduration Timer of the DRX cycle used for communication services; SCI-WUS for DRX-P indicates SCI-WUS for DRX-P, used to indicate whether the target UE (i.e., the second device) is woken up within the drx-on duration Timer of the DRX cycle used for location services.

[0230] Scenario 2-4: Scenarios where the on_duration Timer of DRX-C and DRX-P is aligned at the start time. See also Figure 13 , Figure 13 This is a schematic diagram of the on_duration Timer alignment scenario for DRX-C and DRX-P provided in the embodiments of this application. Figure 2 .like Figure 13 As shown, DRX for SL-C represents the DRX cycle used for communication services in the sidelink system, and DRX for SL-P represents the DRX cycle used for location services 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), two SCIs are sent to indicate whether the second device should wake up within the drx-on duration timer of DRX-C and whether the second device should wake up within the drx-on duration timer of DRX-P, respectively. Figure 13In the DRX-C section, SCI-WUS for DRX-C indicates SCI-WUS for DRX-C, used to indicate whether the target UE (i.e., the second device) is woken up within the drx-on duration Timer of the DRX cycle used for communication services; SCI-WUS for DRX-P indicates SCI-WUS for DRX-P, used to indicate whether the target UE (i.e., the second device) is woken up within the drx-on duration Timer of the DRX cycle used for location services.

[0231] As can be seen, the embodiments of this application design a new second-order SCI (i.e., the fourth SCI and the sixth SCI) in the sidelink system for the DRX cycle of communication services and the DRX cycle of positioning services, respectively, to indicate whether to wake up within the drx-onduration Timer of their respective DRX cycles. On the one hand, the meaning is clear, the flexibility is high, and it can be applied to various scenarios; on the other hand, it can reduce power consumption and achieve a trade-off between power consumption and communication performance and / or positioning performance.

[0232] Example 3

[0233] Embodiment 3 of this application mainly introduces a scheme for designing a unified wake-up indication for the DRX cycle of communication services and the DRX cycle of location services when communication services and location services coexist in a cellular system for a period of time. That is, a wake-up signal is used to indicate wake-up or sleep during the DRX cycle of the two services respectively.

[0234] See Figure 14 , Figure 14 This is a third schematic flowchart of the wake-up indication method in dual DRX mode provided in the embodiments of this application. For example... Figure 14 As shown, the wake-up indication method in dual DRX mode includes, but is not limited to, the following steps:

[0235] S301, the network device sends downlink control information (DCI), which includes a wake-up indication bit. The wake-up indication bit is used to indicate whether the terminal device wakes up within the duration timer of the DRX cycle used for communication services and whether it wakes up within the duration timer of the DRX cycle used for positioning services.

[0236] Optionally, in this embodiment, both communication and positioning services exist simultaneously between the network device and the terminal device, and both the network device and the terminal device enter dual DRX mode. The network device sends DCI within a preset time window, which can be the power saving offset period before a DRX cycle. The format of this DCI is the DCI format used in the NR system to indicate whether the terminal device should wake up within the duration timer of the DRX cycle of the communication service, i.e., the format of this DCI is the traditional DCI format 2-6. Alternatively, the format of this DCI can also be a newly designed DCI format, such as DCI format 2-7 or DCI format 2-8. Since the traditional DCI format 2-6 is based on a block-like design, with one block corresponding to one UE, the network device tells each UE the start bit of DCI format 2-6 to read through RRC higher-layer signaling (such as Position DCI2-6), and tells each UE the size of its corresponding block through RRC higher-layer signaling (such as SizeDCI2-6). Therefore, the DCI in this embodiment also adopts a block-like design. Each block of the DCI includes a wake-up indication bit, which indicates whether the terminal device wakes up within the on-duration timer of the DRX cycle used for communication services and within the on-duration timer of the DRX cycle used for location services.

[0237] It should be understood that in this application, the terms "duration timer" and "drx-on duration Timer" can also be simply referred to as "duration", and the term "duration" can also be described as "wake-up time".

[0238] Optionally, the DCI described above further includes a first indicator bit, which comprises one or more bits. This first indicator bit is used to indicate whether the terminal device is awake on the secondary cell corresponding to each bit of the first indicator bit. The length of the first indicator bit is p bits, where p equals the number of secondary cells or secondary cell groups used for location services. 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 indicator bit can be called a sleep indicator bit, and it may have other names, which are not limited in this embodiment.

[0239] See Figure 15 , Figure 15 This is a schematic diagram of the DCI format provided in the embodiments of this application. Figure 15This is an extension of the traditional DCI format 2-6, enabling it to indicate whether a terminal device should wake up within the drx-on duration timer of the DRX cycle used for communication services, and also within the drx-on duration timer of the DRX cycle used for location services. In the wake-up state, the terminal device performs physical downlink control channel (PDCCH) detection. Figure 15 This explanation uses the instructions within a single block in DCIformat 2-6 as an example. For example... Figure 15 As shown, a block contains a total of (2+c+p) indicator bits (where c and p are both integers greater than or equal to 0), of which 1+c are indicator bits for the DRX cycle used for communication services, and 1+p are indicator bits for the DRX cycle used for positioning services. It should be understood that... Figure 15 The 1+c bits are the indicator bits of the traditional DCI format 2-6, of which 1 bit is the wake-up indicator bit for communication, used to indicate whether the terminal device is woken up within the drx-on duration Timer of the DRX cycle used for communication services. Each of the c (exemplary, c = 0, 1, 2, 3, 4, 5) bits is used to indicate whether the terminal device is woken up on the secondary cell corresponding to that bit. Figure 15 The 1+p bits are newly added indicator bits in DCI format 2-6. One of these bits is a location wake-up indicator bit, used to indicate whether the terminal device should wake up within the drx-on duration Timer of the DRX cycle used for location services. For example, if this bit is 1, it means the terminal device will wake up within the drx-on duration Timer of the DRX cycle used for location services to perform PDCCH detection or blind detection; if this bit is 0, it means the terminal device will sleep within the drx-on duration Timer of the DRX cycle used for location services; or vice versa. Each of the p (p is a positive integer) bits (i.e., the first indicator bit mentioned above) is used to indicate whether the terminal device should wake up on the secondary cell corresponding to that bit. In other words, Figure 15 Two consecutive (continuous when c=0) or discontinuous (discontinuous when c>0) bits (i.e., the wake-up indicator bits mentioned above) are used to indicate whether the terminal device should wake up within the drx-on duration Timer of the DRX cycle used for communication services and whether it should wake up within the drx-on duration Timer of the DRX cycle used for positioning services.

[0240] It should be understood that if the wake-up indicator bit instructs the terminal device to wake up within the drx-onduration Timer of the DRX cycle used for communication services, the network device will also be awake during this period. Similarly, if the wake-up indicator bit instructs the terminal device to wake up within the drx-on duration Timer of the DRX cycle used for location services, the network device will also be awake during this period. Because the terminal device needs to perform PDCCH detection in the wake-up state, the network device needs to send PDCCH to support the terminal device's PDCCH detection in the wake-up state. It should also be understood that the "wake-up" and "sleep" mentioned in the embodiments of this application refer to PDCCH detection (or blind PDCCH detection). That is, the "wake-up" mentioned in the embodiments of this application can be equivalently replaced by "perform PDCCH detection", and "sleep" can be equivalently replaced by "do not perform PDCCH detection".

[0241] S302, the terminal device receives the DCI.

[0242] Optionally, the terminal device receives the DCI, parses it, and wakes up or sleeps within the on-duration timer of the DRX cycle used for communication services, and wakes up or sleeps within the on-duration timer of the DRX cycle used for location services, according to the wake-up indication bit in the DCI. Specifically, if the wake-up indication bit in the DCI indicates that the terminal device should wake up within the drx-on-duration timer of the DRX cycle used for communication services, then the terminal device will wake up and perform PDCCH detection (or blind detection) within the drx-on-duration timer of the DRX cycle used for communication services. Similarly, if the wake-up indication bit in the DCI indicates that the terminal device should wake up within the drx-on-duration timer of the DRX cycle used for location services, then the terminal device will wake up and perform PDCCH detection (or blind detection) within the drx-on-duration timer of the DRX cycle used for location services. Therefore, the meaning of the wake-up indication bit included in the DCI in the embodiments of this application can also be understood as follows: the wake-up indication bit is used to instruct the terminal device to wake up within the drx-on duration Timer of the DRX cycle for communication services to perform PDCCH detection or sleep, and to wake up within the drx-on duration Timer of the DRX cycle for positioning services to perform PDCCH detection or sleep.

[0243] Optionally, the technical solutions provided in this application embodiment can be applied to scenarios 1-1, 1-2 and 1-3 in the aforementioned embodiment one, wherein the sidelink system in scenarios 1-1, 1-2 and 1-3 should be replaced with a cellular system and the SCI should be replaced with DCI.

[0244] As can be seen, the embodiments of this application extend the functions of traditional DCI fromat 2-6, enabling it to simultaneously indicate whether the terminal device should wake up within the drx-on duration Timer of the DRX cycle for communication services and within the drx-on duration Timer of the DRX cycle for location services. On the one hand, it eliminates the need to design separate DCIs for communication and location services, reducing signaling overhead; on the other hand, it can simultaneously indicate wake-up and sleep times for communication and / or location services to achieve a trade-off between power consumption and communication and / or location performance.

[0245] Example 4

[0246] Embodiment 4 of this application mainly introduces a scheme for independently designing wake-up indicators for the DRX cycle of location services in a cellular system.

[0247] See Figure 16 , Figure 16 This is a schematic flowchart of the fourth wake-up indication method in dual DRX mode provided in the embodiments of this application. For example... Figure 16 As shown, the wake-up indication method in dual DRX mode includes, but is not limited to, the following steps:

[0248] S401, the network device sends a first downlink control information (DCI), the first DCI including a first wake-up indication bit, the first wake-up indication bit being used to indicate whether the terminal device wakes up within the duration timer of the DRX cycle used for locating services.

[0249] Optionally, in this embodiment, the network device and the terminal device may only have location services, and both the network device and the terminal device enter dual DRX mode. The network device sends a first DCI within a preset time window, which can be a power saving offset period before a DRX cycle. The format of the first DCI is not the format of the DCI used to indicate whether the terminal device is woken up within the duration timer of the DRX cycle used for communication services; that is, the format of the first DCI is not DCI format 2-6. To distinguish it from DCI format 2-6, the following description uses DCI format 2-7 as an example. It should be understood that the format of the first DCI can also be called DCI format 2-8, DCI format 2-9, etc., and this embodiment does not limit this. The first DCI adopts a block design, and each block of the first DCI includes a first wake-up indicator bit, which is used to indicate whether the terminal device is woken up within the duration timer (on_duration Timer) of the DRX cycle used for location services.

[0250] It should be understood that in this application, the terms "duration timer" and "drx-on duration Timer" can also be simply referred to as "duration", and the term "duration" can also be described as "wake-up time".

[0251] Optionally, the aforementioned first DCI further includes a first indicator bit, which comprises one or more bits. This first indicator bit is used to indicate whether the terminal device is awake on the secondary cell corresponding to each bit of the first indicator bit. The length of the first indicator bit is p bits, where p equals the number of secondary cells or secondary cell groups used for location services. 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 indicator bit can be called a sleep indicator bit, and it may have other names; this application embodiment does not limit the specific names.

[0252] See Figure 17 , Figure 17 This is a schematic diagram of the format of the first DCI provided in the embodiments of this application. The format of the first DCI is DCI format 2-7. Figure 17 This explanation uses the instructions within a single block of the first DCI (i.e., DCI format 2-7) as an example. For example... Figure 17As shown, a block contains (1+p) indicator bits (p is a positive integer). One bit is the first wake-up indicator bit, used to indicate whether the terminal device should wake up within the drx-on duration Timer of the DRX cycle used for location services. For example, if this bit is 1, it indicates that the terminal device should wake up within the drx-on duration Timer of the DRX cycle used for location services to perform PDCCH detection or blind detection; if this bit is 0, it indicates that the terminal device should sleep within the drx-on duration Timer of the DRX cycle used for location services. Conversely, if this bit is 0, it indicates that the terminal device should wake up within the drx-on duration Timer of the DRX cycle used for location services to perform PDCCH detection or blind detection; if this bit is 1, it indicates that the terminal device should sleep within the drx-on duration Timer of the DRX cycle used for location services. One bit from the p (p is an integer greater than or equal to 0) bits (i.e., the aforementioned first indicator bit) is used to indicate whether the terminal device should wake up on the secondary cell corresponding to that bit.

[0253] It should be understood that if the wake-up indicator bit indicates that the terminal device wakes up within the drx-onduration Timer of the DRX period used for positioning services, the network device is also awake during this period. Because the terminal device needs to perform PDCCH detection during wake-up, the network device needs to send PDCCH to support the terminal device's PDCCH detection. It should also be understood that the terms "wake-up" and "sleep" mentioned in the embodiments of this application refer to PDCCH detection (or blind PDCCH detection). That is, "wake-up" mentioned in the embodiments of this application can be equivalently replaced by "perform PDCCH detection," and "sleep" can be equivalently replaced by "do not perform PDCCH detection."

[0254] Optionally, because the aforementioned first DCI is a newly defined DCI format, the network device needs higher-layer parameters to indicate the start bit of the first wake-up indicator bit and / or the size of the block containing the first wake-up indicator bit before sending the first DCI. Specifically, the network device sends RRC signaling before sending the first DCI. This RRC signaling is used to indicate the start bit of the first wake-up indicator bit and / or the size (i.e., length) of the block containing the first wake-up indicator bit in the first DCI. Alternatively, the RRC signaling is used to indicate the start and end bits of the first wake-up indicator bit in the first DCI. Alternatively, the RRC signaling is used to indicate the end bit of the first wake-up indicator bit and / or the size (i.e., length) of the block containing the first wake-up indicator bit in the first DCI.

[0255] As an optional embodiment, wake-up or sleep mode can be indicated by whether the first wake-up indicator 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 within the drx-on duration Timer of the DRX cycle used for location services to perform PDCCH detection. When the first DCI does not carry the first wake-up indicator bit, the terminal device is instructed to sleep within the drx-on duration Timer of the DRX cycle used for location services.

[0256] S402, the terminal device receives the first DCI.

[0257] Optionally, the terminal device receives the first DCI, parses the first DCI, and wakes up or goes into sleep mode within the duration timer of the DRX cycle used for the location service according to the indication of the first wake-up indication bit in the first DCI. If the first wake-up indication bit in the first DCI indicates that the terminal device should wake up within the drx-on duration Timer of the DRX cycle used for the location service, then the terminal device will wake up within the drx-on duration Timer of the DRX cycle used for the location service and perform PDCCH detection (or blind detection). Therefore, the meaning of the first wake-up indication bit included in the first DCI in this embodiment can also be understood as: the first wake-up indication bit is used to instruct the terminal device to wake up within the drx-on duration Timer of the DRX cycle used for the location service to perform PDCCH detection or go into sleep mode.

[0258] Optionally, the terminal device receives RRC signaling before receiving the first DCI. This RRC signaling is used to indicate the start bit of the first wake-up indicator bit in the first DCI and / or the size (i.e., length) of the block containing the first wake-up indicator bit. Alternatively, the RRC signaling is used to indicate the start and end bits of the first wake-up indicator bit in the first DCI. Alternatively, the RRC signaling is used to indicate the end bit of the first wake-up indicator bit in the first DCI and / or the size (i.e., length) of the block containing the first wake-up indicator bit.

[0259] Optionally, the wake-up indication method in dual DRX mode further includes the following steps:

[0260] S403, the network device sends a second DCI, which includes a second wake-up indication bit, which is used to indicate whether the terminal device wakes up within the duration timer of the DRX cycle used for communication services.

[0261] Optionally, there may be communication services between the network device and the terminal device. The network device sends a second DCI within a preset time window. This preset time window can be a power saving offset period before a DRX cycle. The format of the second DCI is the same as the DCI format used in the NR system to indicate whether the terminal device wakes up within the duration timer of the DRX cycle for the communication service. That is, the format of the second DCI is the traditional DCI format 2-6, which includes a second wake-up indicator bit to indicate whether the terminal device wakes up within the duration timer of the DRX cycle for the communication service.

[0262] Optionally, the implementation of the second DCI described above can be found in the description of DCI format 2-6 in the NR system, which will not be elaborated here. See also Figure 18 , Figure 18 This is a schematic diagram of DCI format 2-6 in the NR system. Figure 18 This explanation uses the instructions within a single block in DCIformat 2-6 as an example. For example... Figure 18 As shown, a block contains (1+c) indicator bits (where c is an integer greater than or equal to 0), one of which is a second wake-up indicator bit, used to indicate whether the terminal device should wake up within the drx-on duration Timer of the DRX cycle used for communication services. Each of the c (exemplary, c = 0, 1, 2, 3, 4, 5) bits is used to indicate whether the terminal device should wake up on the secondary cell corresponding to that bit.

[0263] S404, the terminal device receives the second DCI.

[0264] Optionally, the terminal device receives the second DCI, parses the second DCI, and wakes up or goes into sleep within the duration timer (on_durationTimer) of the DRX cycle used for communication services, according to the indication of the second wake-up indication bit in the second DCI. Specifically, if the second wake-up indication bit in the second DCI indicates that the terminal device should wake up within the drx-on duration Timer of the DRX cycle used for communication services, then the terminal device will wake up within the drx-on duration Timer of the DRX cycle used for communication services and perform PDCCH detection (or blind detection). Therefore, the meaning of the second wake-up indication bit included in the second DCI in this embodiment can also be understood as: the second wake-up indication bit is used to instruct the terminal device to wake up within the drx-on duration Timer of the DRX cycle used for communication services to perform PDCCH detection or go into sleep.

[0265] Optionally, the technical solutions provided in this application can be applied to scenarios where DRX-C (i.e., the DRX cycle used for communication services) and DRX-P (i.e., the DRX cycle used for location services) overlap in time, or to scenarios where DRX-C and DRX-P do not overlap in time, such as scenarios 2-1, 2-2, 2-3, and 2-4 in the aforementioned embodiment two. In these scenarios, the sidelink system should be replaced with a cellular system, and SCI should be replaced with DCI.

[0266] As can be seen, the embodiments of this application design a new DCI format (such as DCI format 2-7) for the DRX cycle of the positioning service in the cellular system to indicate the wake-up or sleep within the drx-on duration Timer of the DRX cycle of the positioning service. On the one hand, the meaning is clear, the flexibility is high, and it can be applied to various scenarios; on the other hand, it can reduce power consumption and achieve a trade-off between power consumption and communication performance and / or positioning performance.

[0267] The foregoing details the method of this application. To facilitate better implementation of the above-described solutions in the embodiments of this application, corresponding apparatus or devices are also provided.

[0268] This application embodiment can divide the first device and the second device into functional modules according to the above method example. The network device and the terminal device can also be divided into functional modules according to the above method example. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division; other division methods may be used in actual implementation. The following will combine... Figures 19 to 23 The communication device of the embodiments of this application is described in detail.

[0269] In the case of using integrated units, see Figure 19 , Figure 19 This is a schematic diagram of the structure of the communication device 1 provided in an embodiment of this application. The communication device 1 can be a first device or a chip or circuit that can be disposed in the first device. Figure 19 As shown, the communication device 1 includes a transceiver unit 11, and optionally a processing unit 12.

[0270] In one design, the transceiver unit 11 is used to transmit a first SCI; the transceiver unit 11 is also used to transmit a second SCI, the first SCI being used to indicate that the format of the second SCI is a first format, the second SCI of the first format including a wake-up indication bit, the wake-up indication bit being used to indicate whether the second device wakes up within the duration timer of the discontinuous reception DRX cycle for communication services and whether it wakes up within the duration timer of the DRX cycle for positioning services.

[0271] Optionally, the processing unit 12 is used to generate a first SCI and a second SCI.

[0272] Optionally, the transceiver unit 11 is further configured to send SL RRC signaling, which is used to indicate the start bit of the second SCI and / or the size of the second SCI.

[0273] Optionally, the second SCI further includes a first field and a second field. The first field is used to indicate the identifier of the first device, which is the layer 2 identifier of the first device; the second field is used to indicate the identifier of the second device, which is the layer 2 identifier of the second device.

[0274] 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 the complete layer 2 identifier of the first device, and the identifier of the second device is the complete layer 2 identifier of the second device.

[0275] Optionally, the second SCI may further include one or more of the following fields: a third field indicating whether the second device wakes up on the carrier unit corresponding to each bit of the third field; a fourth field indicating the start time and duration of the second device entering sleep mode during the DRX duration of the DRX period for communication services and the DRX period for location services, or the fourth field indicating the start time and duration of the second device entering sleep mode during the DRX duration of the DRX period for communication services; a fifth field indicating the start time and duration of the second device entering sleep mode during the DRX duration of the DRX period for location services; and a sixth field indicating the period during which the second device performs the first SCI detection.

[0276] Optionally, the length of the third field mentioned above is equal to the sum of the number of carrier units used for communication services and the number of carrier units used for positioning services.

[0277] 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 used to indicate the first format in the first SCI is binary 10 or 11.

[0278] It should be understood that the communication device 1 in this design can perform the aforementioned embodiment 1, and the above-mentioned operations or functions of each unit in the communication device 1 are respectively to realize the corresponding operations of the first device in the aforementioned embodiment 1. The technical effects are the same as those in the aforementioned embodiment 1. For the sake of brevity, they will not be repeated here.

[0279] In another design, the transceiver unit 11 is used to send a third SCI; the transceiver unit 11 is also used to send a fourth SCI, the third SCI being used to indicate that the format of the fourth SCI is a second format, the fourth SCI in the second format including a first wake-up indication bit, the first wake-up indication bit being used to indicate whether the second device wakes up within the duration timer of the DRX cycle.

[0280] Optionally, the aforementioned processing unit 12 is used to generate the third SCI and the fourth SCI.

[0281] Optionally, the transceiver unit 11 is further configured to transmit a fifth SCI; the transceiver unit 11 is also configured to transmit a sixth SCI, the fifth SCI being used to indicate that the format of the sixth SCI is a third format, the fifth SCI in the third format including a second wake-up indication bit, the second wake-up indication bit being used to indicate whether the second device wakes up within the duration timer of the DRX cycle used for the second service; wherein the second service is a communication service and the first service is a location service; or, the second service is a location service and the first service is a communication service.

[0282] Optionally, the transceiver unit 11 is further configured to send a first SL RRC signaling, which is used to indicate the start bit of the fourth SCI and / or the size of the fourth SCI.

[0283] Optionally, the transceiver unit 11 is further configured to send a second SL RRC signaling, which is used to indicate the start bit of the sixth SCI and / or the size of the sixth SCI.

[0284] Optionally, the aforementioned first wake-up indication bit is used to indicate whether the second device wakes up within the duration timer of the DRX cycle used for the first service.

[0285] Optionally, both the fourth SCI and the sixth SCI include a first field and a second field. The first field is used to indicate the identifier of the first device, which is the layer 2 identifier of the first device; the second field is used to indicate the identifier of the second device, which is the layer 2 identifier of the second device.

[0286] 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 the complete layer 2 identifier of the first device, and the identifier of the second device is the complete layer 2 identifier of the second device.

[0287] Optionally, the fourth SCI and the sixth SCI each include one or more of the following fields: the third field is used to indicate whether the second device wakes up on the carrier unit corresponding to each bit of the third field; the fourth field is used to indicate the start time and sleep duration of the second device entering sleep during 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 to indicate the period during which the second device performs the third SCI or fifth SCI detection.

[0288] Optionally, the length of the third field is equal to the number of carrier units used for the first service or the number of carrier units used for the second service.

[0289] Optionally, the length of the second-order SCI format field in the third SCI is k bits, and the value of the second-order SCI format field used to indicate the second format in the third SCI is greater than or equal to decimal 2 and less than or equal to 2. k Any integer in -1; 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 used to indicate the third format in the fifth SCI 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 Integers in the range -1. k is an integer greater than 2.

[0290] It should be understood that the communication device 1 in this design can perform the aforementioned embodiment 2, and the above-mentioned operations or functions of each unit in the communication device 1 are respectively to realize the corresponding operations of the first device in the aforementioned embodiment 2. The technical effects are as described in the aforementioned embodiment 2, and for the sake of brevity, they will not be repeated here.

[0291] See Figure 20 , Figure 20 This is a schematic diagram of the structure of the communication device 2 provided in an embodiment of this application. The communication device 2 can be a second device or a chip or circuit that can be disposed within a second device. Figure 20 As shown, the communication device 2 includes a transceiver unit 21.

[0292] In one design, the transceiver unit 21 is used to receive a first SCI; the transceiver unit 21 is also used to receive a second SCI, the first SCI being used to indicate that the format of the second SCI is a first format, the second SCI of the first format includes a wake-up indication bit, the wake-up indication bit being used to indicate whether the second device is woken up within the duration timer of the DRX cycle for communication services and whether it is woken up within the duration timer of the DRX cycle for positioning services.

[0293] Optionally, the communication device 2 further includes 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 services when the wake-up indication bit is used to instruct the second device to wake up within the duration timer of the DRX cycle for communication services; and / or, to wake up and perform PSCCH detection within the duration timer of the DRX cycle for location services when the wake-up indication bit is used to instruct the second device to wake up within the duration timer of the DRX cycle for location services.

[0294] Optionally, the transceiver unit 21 is further configured to receive SL RRC signaling, which is used to indicate the start bit of the second SCI and / or the size of the second SCI.

[0295] Optionally, the communication device 2 further includes a wake-up or sleep unit 23. The wake-up or sleep unit 23 is used to wake up or sleep within the duration timer of the DRX cycle for communication services, and to wake up or sleep within the duration timer of the DRX cycle for positioning services, according to the indication of the wake-up indication bit in the second SCI.

[0296] Optionally, the second SCI further includes a first field and a second field. The first field is used to indicate the identifier of the first device, which is the layer 2 identifier of the first device; the second field is used to indicate the identifier of the second device, which is the layer 2 identifier of the second device.

[0297] 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 the complete layer 2 identifier of the first device, and the identifier of the second device is the complete layer 2 identifier of the second device.

[0298] Optionally, the second SCI may further include one or more of the following fields: a third field indicating whether the second device wakes up on the carrier unit corresponding to each bit of the third field; a fourth field indicating the start time and duration of the second device entering sleep mode during the DRX duration of the DRX period for communication services and the DRX period for location services, or the fourth field indicating the start time and duration of the second device entering sleep mode during the DRX duration of the DRX period for communication services; a fifth field indicating the start time and duration of the second device entering sleep mode during the DRX duration of the DRX period for location services; and a sixth field indicating the period during which the second device performs the first SCI detection.

[0299] Optionally, the length of the third field mentioned above is equal to the sum of the number of carrier units used for communication services and the number of carrier units used for positioning services.

[0300] 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 used to indicate the first format in the first SCI is binary 10 or 11.

[0301] The PSCCH detection unit 22 and the wake-up or sleep unit 23 can be integrated into one unit, such as a processing unit.

[0302] It should be understood that in this design, the communication device 2 can perform the aforementioned embodiment 1, and the above-mentioned operations or functions of each unit in the communication device 1 are respectively to realize the corresponding operations of the second device in the aforementioned embodiment 1. The technical effects are the same as those in the aforementioned embodiment 1. For the sake of brevity, they will not be repeated here.

[0303] In another design, the transceiver unit 21 is used to receive a third SCI; the transceiver unit 21 is also used to receive a fourth SCI, the third SCI being used to indicate that the format of the fourth SCI is a second format, the fourth SCI in the second format including a first wake-up indication bit, the first wake-up indication bit being used to indicate whether the second device wakes up within the duration timer of the DRX cycle.

[0304] Optionally, the transceiver unit 21 is further configured to receive a fifth SCI; the transceiver unit 21 is also configured to receive a sixth SCI, the fifth SCI being used to indicate that the format of the sixth SCI is a third format, the fifth SCI in the third format including a second wake-up indication bit, the second wake-up indication bit being used to indicate whether the second device wakes up within the duration timer of the DRX cycle used for the second service; wherein the second service is a communication service and the first service is a location service; or, the second service is a location service and the first service is a communication service.

[0305] Optionally, the transceiver unit 21 is further configured to receive a first SL RRC signaling, which is used to indicate the start bit of the fourth SCI and / or the size of the fourth SCI.

[0306] Optionally, the transceiver unit 21 is further configured to receive a second SL RRC signaling, which is used to indicate the start bit of the sixth SCI and / or the size of the sixth SCI.

[0307] Optionally, the communication device 2 further includes 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 when the first wake-up indication bit is used to indicate that the second device wakes up within the duration timer of the DRX cycle; and / or, when the second wake-up indication bit is used to indicate that the second device wakes up within the duration timer of the DRX cycle used for the second service, it will wake up and perform PSCCH detection within the duration timer of the DRX cycle used for the second service.

[0308] Optionally, the communication device 2 further includes a wake-up or sleep unit 23. The wake-up or sleep unit 23 is used to wake up or sleep within 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 to wake up or sleep within 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.

[0309] Optionally, the aforementioned first wake-up indication bit is used to indicate whether the second device wakes up within the duration timer of the DRX cycle used for the first service.

[0310] Optionally, both the fourth SCI and the sixth SCI include a first field and a second field. The first field is used to indicate the identifier of the first device, which is the layer 2 identifier of the first device; the second field is used to indicate the identifier of the second device, which is the layer 2 identifier of the second device.

[0311] 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 the complete layer 2 identifier of the first device, and the identifier of the second device is the complete layer 2 identifier of the second device.

[0312] Optionally, the fourth SCI and the sixth SCI each include one or more of the following fields: the third field is used to indicate whether the second device wakes up on the carrier unit corresponding to each bit of the third field; the fourth field is used to indicate the start time and sleep duration of the second device entering sleep during 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 to indicate the period during which the second device performs the third SCI or fifth SCI detection.

[0313] Optionally, the length of the third field is equal to the number of carrier units used for the first service or the number of carrier units used for the second service.

[0314] Optionally, the length of the second-order SCI format field in the third SCI is k bits, and the value of the second-order SCI format field used to indicate the second format in the third SCI is greater than or equal to decimal 2 and less than or equal to 2. k Any integer in -1; 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 used to indicate the third format in the fifth SCI 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 Integers in the range -1. k is an integer greater than 2.

[0315] The PSCCH detection unit 22 and the wake-up or sleep unit 23 can be integrated into one unit, such as a processing unit.

[0316] It should be understood that the communication device 2 in this design can perform the aforementioned embodiment 2, and the above-mentioned operations or functions of each unit in the communication device 2 are respectively to realize the corresponding operations of the second device in the aforementioned embodiment 2. The technical effects are as described in the aforementioned embodiment 2, and for the sake of brevity, they will not be repeated here.

[0317] See Figure 21 , Figure 21 This is a schematic diagram of the structure of the communication device 3 provided in an embodiment of this application. The communication device 3 can be a network device or a chip or circuit that can be disposed within a network device. Figure 21 As shown, the communication device 3 includes a transceiver unit 31, and optionally a processing unit 32.

[0318] In one design, the transceiver unit 31 is used to transmit DCI, which includes a wake-up indication bit. The wake-up indication bit is used to indicate whether the terminal device is woken up within the duration timer of the DRX cycle for communication services and whether it is woken up within the duration timer of the DRX cycle for positioning services.

[0319] Optionally, the aforementioned processing unit 32 is used to generate DCI.

[0320] Optionally, the above-mentioned DCI format is the DCI format used in the NR system to indicate whether the terminal device is woken up within the duration timer of the DRX cycle of the communication service, that is, the DCI format is DCI format 2-6.

[0321] Optionally, the DCI may further include a first indicator bit, which is used to indicate whether the terminal device is awake on the secondary cell corresponding to each bit included in the first indicator bit.

[0322] Optionally, the length of the first indicator bit is p bits, where p is equal to the number of secondary cells or secondary cell groups used for positioning services.

[0323] It should be understood that in this design, the communication device 3 can perform the aforementioned embodiment 3, and the above-mentioned operations or functions of each unit in the communication device 3 are respectively to realize the corresponding operations of the network device in the aforementioned embodiment 3. The technical effects are the same as those in the aforementioned embodiment 3. For the sake of brevity, they will not be repeated here.

[0324] In another design, the transceiver unit 31 is used to transmit a first DCI, which includes a first wake-up indication bit. The first wake-up indication bit is used to indicate whether the terminal device is woken up within the duration timer of the DRX cycle used for positioning services.

[0325] Optionally, the transceiver unit 31 is further configured to transmit a second DCI, the format of which is the DCI format used in the NR system to indicate whether the terminal device is woken up within the duration timer of the DRX cycle of the communication service, that is, the format of the second DCI is the conventional DCI format 2-6, the second DCI includes a second wake-up indication bit, the second wake-up indication bit is used to indicate whether the terminal device is woken up within the duration timer of the DRX cycle of the communication service.

[0326] Optionally, the processing unit 32 described above is used to generate the first DCI and the second DCI.

[0327] Optionally, the transceiver unit 31 is further configured to send RRC signaling, which is used to indicate the start bit of the first wake-up indicator bit and / or the size of the block in which the first wake-up indicator bit is located.

[0328] Optionally, the format of the first DCI mentioned above is not the format of the DCI used to indicate whether the terminal device is awake within the duration timer of the DRX cycle used for communication services.

[0329] Optionally, the first DCI mentioned above also includes a first indicator bit, which is used to indicate whether the terminal device is awake on the secondary cell corresponding to each bit included in the first indicator bit.

[0330] Optionally, the length of the first indicator bit is p bits, where p is equal to the number of secondary cells or secondary cell groups used for positioning services.

[0331] It should be understood that in this design, the communication device 3 can perform the aforementioned embodiment four, and the above-mentioned operations or functions of each unit in the communication device 3 are respectively to realize the corresponding operations of the network device in the aforementioned embodiment four. The technical effects are the same as those in the aforementioned embodiment four, and for the sake of brevity, they will not be repeated here.

[0332] See Figure 22 , Figure 22 This is a schematic diagram of the structure of the communication device 4 provided in an embodiment of this application. The communication device 4 can be a terminal device or a chip or circuit that can be disposed in a terminal device. Figure 22 As shown, the communication device 4 includes a transceiver unit 41.

[0333] In one design, the transceiver unit 41 is used to receive a DCI, which includes a wake-up indication bit. The wake-up indication bit is used to indicate whether the terminal device is woken up within a duration timer of a DRX cycle for communication services and whether it is woken up within a duration timer of a DRX cycle for positioning services.

[0334] Optionally, the communication device 4 further includes a PDCCH detection unit 42. The PDCCH detection unit 42 is configured to wake up and perform physical downlink control channel (PDCCH) detection within the duration timer of the DRX period for communication services when the wake-up indication bit is used to indicate that the terminal device is to wake up within the duration timer of the DRX period for communication services; and / or, to wake up and perform PDCCH detection within the duration timer of the DRX period for location services when the wake-up indication bit is used to indicate that the terminal device is to wake up within the duration timer of the DRX period for location services.

[0335] Optionally, the above-mentioned DCI format is the DCI format used in the NR system to indicate whether the terminal device is woken up within the duration timer of the DRX cycle of the communication service, that is, the DCI format is DCI format 2-6.

[0336] Optionally, the DCI may further include a first indicator bit, which is used to indicate whether the terminal device is awake on the secondary cell corresponding to each bit included in the first indicator bit.

[0337] Optionally, the length of the first indicator bit is p bits, where p is equal to the number of secondary cells or secondary cell groups used for positioning services.

[0338] The PDCCH detection unit 42 mentioned above can also be called a processing unit.

[0339] It should be understood that in this design, the communication device 4 can perform the aforementioned embodiment 3, and the above-mentioned operations or functions of each unit in the communication device 4 are respectively to realize the corresponding operations of the terminal device in the aforementioned embodiment 3. The technical effects are the same as those in the aforementioned embodiment 3. For the sake of brevity, they will not be repeated here.

[0340] In another design, the transceiver unit 41 is used to receive a first DCI, the first DCI including a first wake-up indication bit, the first wake-up indication bit being used to indicate whether the terminal device is woken up within the duration timer of the DRX cycle used for positioning services.

[0341] Optionally, the transceiver unit 41 is further configured to receive a second DCI, the format of which is the DCI format used in the NR system to indicate whether the terminal device is woken up within the duration timer of the DRX cycle of the communication service, that is, the format of the second DCI is the conventional DCI format 2-6, the second DCI includes a second wake-up indication bit, the second wake-up indication bit is used to indicate whether the terminal device is woken up within the duration timer of the DRX cycle of the communication service.

[0342] Optionally, the transceiver unit 41 is further configured to receive RRC signaling, which is used to indicate the start bit of the first wake-up indicator bit and / or the size of the block in which the first wake-up indicator bit is located.

[0343] Optionally, the communication device 4 further includes a PDCCH detection unit 42. The PDCCH detection unit 42 is configured to wake up and perform physical downlink control channel (PDCCH) detection within the duration timer of the DRX cycle for communication services when the first wake-up indication bit is used to indicate that the terminal device is woken up within the duration timer of the DRX cycle for communication services; and / or, to wake up and perform PDCCH detection within the duration timer of the DRX cycle for location services when the second wake-up indication bit is used to indicate that the terminal device is woken up within the duration timer of the DRX cycle for location services.

[0344] Optionally, the format of the first DCI mentioned above is not the format of the DCI used to indicate whether the terminal device is awake within the duration timer of the DRX cycle used for communication services.

[0345] Optionally, the first DCI mentioned above also includes a first indicator bit, which is used to indicate whether the terminal device is awake on the secondary cell corresponding to each bit included in the first indicator bit.

[0346] Optionally, the length of the first indicator bit is p bits, where p is equal to the number of secondary cells or secondary cell groups used for positioning services.

[0347] The PDCCH detection unit 42 mentioned above can also be called a processing unit.

[0348] It should be understood that in this design, the communication device 4 can perform the aforementioned embodiment four, and the above-mentioned operations or functions of each unit in the communication device 4 are respectively to realize the corresponding operations of the terminal device in the aforementioned embodiment four. The technical effects are the same as those in the aforementioned embodiment four. For the sake of brevity, they will not be repeated here.

[0349] See Figure 23 , Figure 23 This is a schematic diagram of the structure of the communication device 1000 provided in an embodiment of this application. Figure 23 As shown, the communication device 1000 provided in this application embodiment can be used to implement the methods described in the above method embodiments, and the description in the above method embodiments can be referred to. The communication device 1000 can be any one of the aforementioned first device and the aforementioned second device.

[0350] The communication device 1000 includes one or more processors 1001. The processor 1001 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the device (e.g., UE, base station, or chip), execute software programs, and process data from the software programs. The device may include a transceiver unit for inputting (receiving) and outputting (transmitting) signals. For example, the device can be a chip, and the transceiver unit can be the chip's input and / or output circuitry, or a communication interface. The chip can be used in a terminal device (e.g., UE) or an access network device (e.g., a base station). Alternatively, the device can be a terminal device (e.g., UE) or an access network device (e.g., a base station), and the transceiver unit can be a transceiver, a radio frequency chip, etc.

[0351] The communication device 1000 includes one or more processors 1001, which can implement the methods of the first device or the second device in any of the foregoing embodiments.

[0352] Optionally, in addition to implementing the methods of any of the foregoing embodiments, the processor 1001 may also implement other functions.

[0353] Optionally, in one design, the processor 1001 may also include instructions 1003, which can be executed on the processor to cause the communication device 1000 to perform the methods described in any of the above method embodiments.

[0354] In another possible design, the communication device 1000 may also include circuitry that can perform the functions of the first or second device in any of the foregoing method embodiments.

[0355] In another possible design, the communication device 1000 may include one or more memories 1002 storing instructions 1004 that can be executed on the processor, causing the communication device 1000 to perform the methods described in any of the above method embodiments. Optionally, the memories may also store data. The processor may also optionally store instructions and / or data. For example, the one or more memories 1002 may store the DCI or SCI described in the above embodiments, or other information involved in the above embodiments. The processor and memory may be configured separately or integrated together.

[0356] In another possible design, the communication device 1000 may also include a transceiver unit 1005 and an antenna 1006, or a communication interface. The transceiver unit 1005, which may be referred to as a transceiver, transceiver circuit, or transceiver, is used to realize the device's transmission and reception functions via the antenna 1006. The communication interface (not shown in the figure) can be used for communication between core network equipment and access network equipment, or between access network equipment and access network equipment. Optionally, the communication interface can be a wired communication interface, such as an optical fiber communication interface.

[0357] The processor 1001, which can be called a processing unit, controls the device (such as a communication device).

[0358] It should be understood that the processor in the embodiments of this application can be a central processing unit (CPU), or it can 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, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0359] It should also be understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but 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 synchronous DRAM (DDR SDRAM), enhanced synchronous DRAM (ESDRAM), synchronous linked DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0360] The above embodiments can be implemented, in whole or in part, by software, hardware (such as circuits), firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired, such as fiber optic, or wireless, such as infrared, wireless, microwave, etc. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0361] This application also provides a computer program product, which includes computer program code. When the computer program code is run on a computer, it causes the computer to perform the method steps of the first device described in the foregoing embodiments; or when the computer program code is run on a computer, it causes the computer to perform the method steps of the second device described in the foregoing embodiments.

[0362] This application also provides a computer-readable storage medium storing program instructions that, when run on a computer, cause the computer to perform the method steps of the first device described in the foregoing embodiments; or, when the computer program code is run on a computer, cause the computer to perform the method steps of the second device described in the foregoing embodiments.

[0363] This application also provides an apparatus, which can be a chip. The chip includes a processor. The processor is used to read and execute a computer program stored in a memory to perform the methods in any possible implementation of any of the foregoing embodiments. Optionally, the chip also includes a memory, which is connected to the processor via a circuit or wire. Further optionally, the chip also includes a communication interface, to which the processor is connected. The communication interface is used to receive data and / or signals to be processed, the processor obtains the data and / or signals from the communication interface, processes the data and / or signals, and outputs the processing result through the communication interface. The communication interface can be an input / output interface.

[0364] Optionally, the processor and memory mentioned above can be physically independent units, or the memory can be integrated with the processor.

[0365] In another embodiment of this application, a communication system is also provided, which includes a first device and a second device. The first device and the second device can perform the methods in any of the foregoing embodiments.

[0366] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This program can be stored in a computer-readable storage medium, and when executed, it can include the processes described in the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM or random access memory (RAM), magnetic disks, or optical disks.

[0367] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wake-up indication method in dual discontinuous reception DRX mode, applied to a first device, characterized in that, include: Send the first-side link control information (SCI); Send a second SCI, wherein 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, which is used to indicate whether the second device wakes up within the duration timer of the discontinuous reception DRX cycle for communication services and whether it wakes up within the duration timer of the DRX cycle for positioning services.

2. The method according to claim 1, characterized in that, The second SCI also includes a first field and a second field; The first field is used to indicate the identifier of the first device, which is the layer 2 identifier of the first device; The second field is used to indicate the identifier of the second device, which is the layer 2 identifier of the second device.

3. The method according to claim 2, characterized in that, The identifier of the first device is 24 bits, and the identifier of the second device is 24 bits; Alternatively, the identifier of the first device is the complete layer 2 identifier of the first device, and the identifier of the second device is the complete layer 2 identifier of the second device.

4. The method according to any one of claims 1-3, characterized in that, The second SCI also includes one or more of the following fields: The third field is used to indicate whether the second device is awake on the carrier unit corresponding to each bit included in the third field; The fourth field is used to indicate the start time and duration of the second device entering sleep mode during the DRX duration of the DRX cycle for communication services and the DRX cycle for location services, or the fourth field is used to indicate the start time and duration of the second device entering sleep mode during the DRX duration of the DRX cycle for communication services, and the fifth field is used to indicate the start time and duration of the second device entering sleep mode during the DRX duration of the DRX cycle for location services. The sixth field is used to indicate the cycle of the second device performing the first SCI test.

5. The method according to claim 4, characterized in that, The length of the third field is equal to the sum of the number of carrier units used for communication services and the number of carrier units used for positioning services.

6. The method according to any one of claims 1-3, characterized in that, 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 used to indicate the first format in the first SCI is binary 10 or 11.

7. The method according to any one of claims 1-3, characterized in that, Before sending the second SCI, the method further includes: Send a sidelink SL radio resource control (RRC) signaling message, the SL RRC signaling message being used to indicate the start bit of the second SCI and / or the size of the second SCI.

8. A wake-up indication method in dual DRX mode, applied to a second device, characterized in that, include: Received first SCI; The second SCI is received, and the first SCI is used to indicate that the format of the second SCI is a first format. The second SCI of the first format includes a wake-up indication bit, which is used to indicate whether the second device is woken up within the duration timer of the DRX cycle for communication services and whether it is woken up within the duration timer of the DRX cycle for positioning services.

9. The method according to claim 8, characterized in that, If the wake-up indication bit is used to instruct the second device to wake up within the duration timer of the DRX cycle used for communication services, then the second device wakes up within the duration timer of the DRX cycle used for communication services and performs physical-side link control channel (PSCCH) detection; and / or, If the wake-up indication bit is used to instruct the second device to wake up within the duration timer of the DRX cycle used for location services, then the second device wakes up within the duration timer of the DRX cycle used for location services and performs PSCCH detection.

10. The method according to claim 8 or 9, characterized in that, The second SCI also includes a first field and a second field; The first field is used to indicate the identifier of the first device, which is the layer 2 identifier of the first device; The second field is used to indicate the identifier of the second device, which is the layer 2 identifier of the second device.

11. The method according to claim 10, characterized in that, The identifier of the first device is 24 bits, and the identifier of the second device is 24 bits; Alternatively, the identifier of the first device is the complete layer 2 identifier of the first device, and the identifier of the second device is the complete layer 2 identifier of the second device.

12. The method according to claim 8 or 9, characterized in that, The second SCI also includes one or more of the following fields: The third field is used to indicate whether the second device is awake on the carrier unit corresponding to each bit included in the third field; The fourth field is used to indicate the start time and duration of the second device entering sleep mode during the DRX duration of the DRX cycle for communication services and the DRX cycle for location services, or the fourth field is used to indicate the start time and duration of the second device entering sleep mode during the DRX duration of the DRX cycle for communication services, and the fifth field is used to indicate the start time and duration of the second device entering sleep mode during the DRX duration of the DRX cycle for location services. The sixth field is used to indicate the cycle of the second device performing the first SCI test.

13. The method according to claim 12, characterized in that, The length of the third field is equal to the sum of the number of carrier units used for communication services and the number of carrier units used for positioning services.

14. The method according to claim 8 or 9, characterized in that, 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 used to indicate the first format in the first SCI is binary 10 or 11.

15. The method according to claim 8 or 9, characterized in that, Before receiving the second SCI, the method further includes: Receive SL RRC signaling, which is used to indicate the start bit of the second SCI and / or the size of the second SCI.

16. The method according to claim 8, characterized in that, The method further includes: According to the indication of the wake-up indication bit in the second SCI, wake up or sleep within the duration timer of the DRX cycle for communication services, and wake up or sleep within the duration timer of the DRX cycle for location services.

17. A wake-up indication method in dual DRX mode, applied to a first device, characterized in that, include: Send to third-party SCI journals; Send a fourth SCI, wherein the third SCI is used to indicate that the format of the fourth SCI is the second format, the fourth SCI of the second format includes a first wake-up indicator bit, the first wake-up indicator bit is used to indicate whether the second device wakes up within the duration timer of the DRX period; the fourth SCI also includes a third field, the third field is used to indicate whether the second device wakes up on the carrier unit corresponding to each bit of the third field.

18. The method according to claim 17, characterized in that, The first wake-up indicator bit is used to indicate whether the second device is woken up within the duration timer of the DRX cycle used for the first service.

19. The method according to claim 18, characterized in that, The method further includes: Sending the fifth SCI; Send the sixth SCI, wherein the fifth SCI is used to indicate that the format of the sixth SCI is the third format, and the sixth SCI of the third format includes a second wake-up indication bit, which is used to indicate whether the second device wakes up within the duration timer of the DRX cycle for the second service; Wherein, the second service is a communication service and the first service is a location service; or, the second service is a location service and the first service is a communication service.

20. The method according to claim 17 or 18, characterized in that, Before sending the fourth SCI, the method further includes: Send a first SL RRC signaling message, which is used to indicate the start bit of the fourth SCI and / or the size of the fourth SCI.

21. The method according to claim 19, characterized in that, Before sending the sixth SCI, the method further includes: Send a second SL RRC signaling, which is used to indicate the start bit of the sixth SCI and / or the size of the sixth SCI.

22. The method according to claim 19, characterized in that, Both the fourth SCI and the sixth SCI include a first field and a second field; The first field is used to indicate the identifier of the first device, which is the layer 2 identifier of the first device; The second field is used to indicate the identifier of the second device, which is the layer 2 identifier of the second device.

23. The method according to claim 22, characterized in that, The identifier of the first device is 24 bits, and the identifier of the second device is 24 bits; Alternatively, the identifier of the first device is the complete layer 2 identifier of the first device, and the identifier of the second device is the complete layer 2 identifier of the second device.

24. The method according to claim 19, characterized in that, Both the fourth SCI and the sixth SCI include one or more of the following fields: The fourth field is used to indicate the start time and duration of the second device entering sleep mode during the DRX duration of the DRX cycle for the first service or the DRX duration of the DRX cycle for the second service. The sixth field is used to indicate the cycle of the second device performing the third or fifth SCI test.

25. The method according to claim 24, characterized in that, The length of the third field is equal to the number of carrier units used for the first service or the number of carrier units used for the second service.

26. The method according to claim 19, characterized in that, The length of the second-order SCI format field in the third SCI is k bits, and the value of the second-order SCI format field used to indicate the second format in the third SCI is greater than or equal to decimal 2 and less than or equal to 2. k Any integer in -1; 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 used to indicate 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 Integers in -1; k is an integer greater than 2.

27. A wake-up indication method in dual DRX mode, applied to a second device, characterized in that, include: Accepting third-party SCI publications; The fourth SCI is received. The third SCI is used to indicate that the format of the fourth SCI is the second format. The fourth SCI of the second format includes a first wake-up indicator bit, which is used to indicate whether the second device wakes up within the duration timer of the DRX period. The fourth SCI also includes a third field, which is used to indicate whether the second device wakes up on the carrier unit corresponding to each bit of the third field.

28. The method according to claim 27, characterized in that, The first wake-up indicator bit is used to indicate whether the second device is woken up within the duration timer of the DRX cycle used for the first service.

29. The method according to claim 28, characterized in that, The method further includes: Received the fifth SCI; The sixth SCI is received, and the fifth SCI is used to indicate that the format of the sixth SCI is the third format. The fifth SCI of the third format includes a second wake-up indication bit, which is used to indicate whether the second device wakes up within the duration timer of the DRX cycle for the second service. Wherein, the second service is a communication service and the first service is a location service; or, the second service is a location service and the first service is a communication service.

30. The method according to claim 27 or 28, characterized in that, Before receiving the fourth SCI, the method further includes: Receive a first SL RRC signaling, which is used to indicate the start bit of the fourth SCI and / or the size of the fourth SCI.

31. The method according to claim 29, characterized in that, Before receiving the sixth SCI, the method further includes: Receive a second SL RRC signaling, which is used to indicate the start bit of the sixth SCI and / or the size of the sixth SCI.

32. The method according to claim 29, characterized in that, 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, then 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 to indicate that the second device wakes up within the duration timer of the DRX cycle for the second service, then the second device wakes up and performs PSCCH detection within the duration timer of the DRX cycle for the second service.

33. The method according to claim 29, characterized in that, Both the fourth SCI and the sixth SCI include a first field and a second field; The first field is used to indicate the identifier of the first device, which is the layer 2 identifier of the first device; The second field is used to indicate the identifier of the second device, which is the layer 2 identifier of the second device.

34. The method according to claim 33, characterized in that, The identifier of the first device is 24 bits, and the identifier of the second device is 24 bits; Alternatively, the identifier of the first device is the complete layer 2 identifier of the first device, and the identifier of the second device is the complete layer 2 identifier of the second device.

35. The method according to claim 29, characterized in that, Both the fourth SCI and the sixth SCI include one or more of the following fields: The fourth field is used to indicate the start time and duration of the second device entering sleep mode during the DRX duration of the DRX cycle for the first service or the DRX duration of the DRX cycle for the second service. The sixth field is used to indicate the cycle of the second device performing the third or fifth SCI test.

36. The method according to claim 35, characterized in that, The length of the third field is equal to the number of carrier units used for the first service or the number of carrier units used for the second service.

37. The method according to claim 29, characterized in that, The length of the second-order SCI format field in the third SCI is k bits, and the value of the second-order SCI format field used to indicate the second format in the third SCI is greater than or equal to decimal 2 and less than or equal to 2. k Any integer in -1; 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 used to indicate 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 Integers in -1; k is an integer greater than 2.

38. A communication device, characterized in that, Includes units or modules for performing the method according to any one of claims 1-37.

39. A computer-readable storage medium storing program instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1-37.

40. A computer program product comprising program instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1-37.

Images