CN111756503B

CN111756503B - Signal detection method and device

Info

Publication number: CN111756503B
Application number: CN201910252562.8A
Authority: CN
Inventors: 薛丽霞; 陈铮
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2023-04-18
Anticipated expiration: 2039-03-29
Also published as: CN111756503A; WO2020200119A1

Abstract

The application relates to a signal detection method and a device, wherein the signal detection method comprises the following steps: the terminal equipment determines that the size of first DCI is a first value, the first value is the size of first type DCI, the first type DCI is DCI which can be detected by the terminal equipment within the non-active time under a C-DRX mechanism, and the detection result of the first DCI is used for indicating whether a downlink control channel is detected within a first time period or not; and the terminal equipment detects the first DCI according to the first value. When the terminal equipment detects the DCI, the DCI only needs to be detected according to the same size, the frequency of detecting the DCI with different sizes by the terminal equipment is reduced, the complexity of detecting the terminal equipment is reduced, and therefore the power consumption of the terminal equipment is reduced.

Description

Signal detection method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a signal detection method and device.

Background

In order to reduce power consumption of the terminal device, a Discontinuous Reception (DRX) processing procedure is introduced, and when there is no data transmission, the terminal device may stop detecting a Physical Downlink Control Channel (PDCCH) and stop receiving corresponding data to reduce power consumption, thereby improving the service time of the battery. In DRX, a base station may configure a DRX cycle (DRX cycle) for a terminal device in a Radio Resource Control (RRC) CONNECTED (CONNECTED) state, where an active time (active time) of the terminal device is included, the terminal device needs to detect a PDCCH at the active time, and does not need to detect the PDCCH at the inactive time.

In addition, in order to reduce the power consumption of the terminal device, a Wake Up Signal (WUS) or a power saving signal/channel (power saving signal/channel) may be introduced in a New Radio (NR) system of the fifth generation mobile communication technology (5 th generation,5 g), and the WUS may be combined with the DRX mechanism in the RRC _ CONNECTED state. For a terminal device supporting WUS, for each DRX cycle, a network device may transmit a WUS during an inactive time of the terminal device, e.g., before a start position of each DRX cycle, the terminal device determines whether to detect a PDCCH during a duration (on duration) period of a next DRX cycle according to a detection result of the WUS. For WUS design, one possible solution is to multiplex the PDCCH in the existing NR, i.e. the WUS is designed as a downlink control channel, e.g. PDCCH, and the terminal device can determine whether to "wake up" by detecting the corresponding PDCCH.

Currently, different types of downlink control information, such as scheduling downlink/uplink data transmission, power control commands, slot format indications or resource preemption indications, generally correspond to different Downlink Control Information (DCI). While for some DCIs, e.g., DCI with CRC scrambled by SI-RNTI, etc., is not affected by the DRX mechanism. That is, for these DCIs, the terminal device needs to detect the PDCCH carrying these DCIs even at the inactive time of the DRX cycle.

Then, when the terminal device is in the inactive time of the DRX cycle, it is very likely that both a PDCCH-based WUS (PDCCH-based WUS) and a PDCCH carrying DCI that is not affected by the DRX mechanism need to be detected, which obviously increases the complexity of terminal device detection and increases the power consumption of the terminal device.

Disclosure of Invention

The embodiment of the application provides a signal detection method and device, which are used for reducing the complexity of terminal device detection and reducing the power consumption of the terminal device.

In a first aspect, a first signal detection method is provided, which includes: the terminal equipment determines that the size of first DCI is a first value, the first value is the size of first type DCI, the first type DCI is DCI which can be detected by the terminal equipment within the non-active time under a C-DRX mechanism, and the detection result of the first DCI is used for indicating whether a downlink control channel is detected within a first time period or not; and the terminal equipment detects the first DCI according to the first value.

The method may be performed by a first communication device, which may be a communication apparatus or a communication device, such as a system-on-a-chip, capable of supporting the communication apparatus to implement the functionality required for the method. Illustratively, the communication device is a terminal device.

In this embodiment of the present application, the size of the first DCI may be determined according to the size of the first type DCI, for example, the size of the first DCI may be the same as the size of the first type DCI, and the terminal device only needs to detect the DCI according to the same size when detecting, so that the number of times that the terminal device detects DCI with different sizes is reduced, and the complexity of detection of the terminal device is reduced, thereby reducing the power consumption of the terminal device.

With reference to the first aspect, in a possible implementation manner of the first aspect, the detecting, by the terminal device, the first DCI according to the first value includes: when the terminal device detects a first search space set and a second search space set at the same detection opportunity, the terminal device detects the first DCI on candidate downlink control channel resources of the first search space set and candidate downlink control channel resources of the second search space set according to the first value, wherein the candidate downlink control channel resources of the first search space set are used for transmitting the first DCI, and the candidate downlink control channel resources of the second search space set are used for transmitting the first type DCI.

If the terminal device needs to detect the first search space set and the second search space set at the same time, the terminal device may detect the first DCI in both the first search space set and the second search space set, and for the terminal device, the detection opportunity for the first DCI is increased. Of course, the terminal device also detects the first type DCI in the second search space. For the network device, when the network device transmits the first DCI and the first-type DCI at the same detection time, the network device may transmit the first DCI in the first search space set and/or the second search space set, and specifically, the network device may transmit the first DCI in the first search space set or the second search space set, or transmit the first DCI in both the first search space set and the second search space set. For example, the network device may transmit the first DCI in both the first set of search spaces and the second set of search spaces, which also increases the candidate control channel resources for the network device to transmit the first DCI.

With reference to the first aspect, in a possible implementation manner of the first aspect, the first type DCI includes one or any combination of the following: scrambling DCI of CRC through SI-RNTI; scrambling DCI of CRC through RA-RNTI; scrambling DCI of CRC through TC-RNTI; or, the DCI of the CRC is scrambled by the P-RNTI.

The first type DCI may refer to DCI that is not affected by the DRX mechanism. Embodiments of the present application do not limit which of the first type of DCI is included at all.

With reference to the first aspect, in a possible implementation manner of the first aspect, the second search space set includes one or any combination of the following: a type 0PDCCH common search space set; a type0A PDCCH common search space set; type 1PDCCH common search space set; or, type 2PDCCH common search space set.

Whether the second search space includes which set of common search spaces may be related to which DCI the first type of DCI includes. Since the embodiments of the present application do not limit which DCI of the first type is included at all, it is of course not limited which common search space sets are included in the second set of search spaces.

In a second aspect, a second signal detection method is provided, the method comprising: the network equipment determines that the size of first DCI is a first value, the first value is the size of first type DCI, the first type DCI is DCI which can be detected by the terminal equipment within the non-activation time under a C-DRX mechanism, and the detection result of the first DCI is used for indicating whether to detect a downlink control channel within a first time period; the network device transmits the first DCI of the first value.

The method may be performed by a second communication device, which may be a communication apparatus or a communication device capable of supporting a communication apparatus to implement the functions required by the method, such as a system-on-a-chip. Illustratively, the communication device is a network device.

With reference to the second aspect, in a possible implementation manner of the second aspect, the sending, by the network device, the first DCI of the first value includes: when the network device sends the first DCI and the first type DCI at the same detection opportunity, the network device sends the first DCI of the first value on a candidate downlink control channel resource of a first search space set and/or a candidate downlink control channel resource of a second search space set, where the candidate downlink control channel resource of the first search space set is used for transmitting the first DCI, and the candidate downlink control channel resource of the second search space set is used for transmitting the first type DCI.

With reference to the second aspect, in a possible embodiment of the second aspect, the first type DCI includes one or any combination of the following: scrambling DCI of CRC through SI-RNTI; scrambling DCI of CRC through RA-RNTI;

scrambling DCI of CRC through TC-RNTI; or, the DCI of the CRC is scrambled by the P-RNTI.

With reference to the second aspect, in a possible implementation manner of the second aspect, the second search space set includes one or any combination of the following: a type 0PDCCH common search space set; a type0A PDCCH common search space set; type 1PDCCH common search space set; or, type 2PDCCH common search space set.

With regard to the technical effects brought by the second aspect or the various embodiments of the second aspect, reference may be made to the introduction of the technical effects of the first aspect or the various embodiments of the first aspect, and details are not repeated.

In a third aspect, a second signal detection method is provided, which includes: the terminal equipment determines that the size of first DCI is a first value, the first value is the size of second-type DCI, the second-type DCI is DCI which can be detected in the activation time of the terminal equipment under a C-DRX mechanism, and the detection result of the first DCI is used for indicating whether a downlink control channel is detected in a first time period or not; and the terminal equipment detects the first DCI according to the first value.

The method may be performed by a third communication apparatus, which may be a communication device or a communication apparatus capable of supporting a communication device to implement the functions required by the method, such as a system on a chip. Illustratively, the communication device is a terminal device.

In this embodiment of the present application, the size of the first DCI may be determined according to the size of the second type DCI, for example, the size of the first DCI may be the same as the size of the second type DCI, and the terminal device only needs to detect the DCI according to the same size when detecting, so that the number of times that the terminal device detects DCIs different in size is reduced, and complexity of detection of the terminal device is reduced, thereby reducing power consumption of the terminal device.

With reference to the third aspect, in a possible implementation manner of the third aspect, the detecting, by the terminal device, the first DCI according to the first value includes: when the terminal device detects a first search space set and a second search space set at the same detection opportunity, the terminal device detects the first DCI in candidate downlink control channel resources of the first search space set and candidate downlink control channel resources of the second search space set according to the first value, wherein the candidate downlink control channel resources of the first search space set are used for transmitting the first DCI, and the candidate downlink control channel resources of the second search space set are used for transmitting the second DCI.

If the terminal device needs to detect the first search space set and the second search space set simultaneously, the terminal device may detect the first DCI in both the first search space set and the second search space set, which increases the detection opportunity for the first DCI for the terminal device. Of course, the terminal device also detects the second type DCI in the second search space. For the network device, when the network device sends the first DCI and the second type DCI at the same detection time, the network device may send the first DCI in the first search space set and/or the second search space set, and specifically, the network device may send the first DCI in the first search space set or the second search space set, or send the first DCI in both the first search space set and the second search space set. For example, the network device may transmit the first DCI in both the first set of search spaces and the second set of search spaces, which also increases the candidate control channel resources for the network device to transmit the first DCI.

With reference to the third aspect, in a possible implementation manner of the third aspect, the second type DCI includes one or any combination of the following: scrambling DCI of CRC through INT-RNTI; scrambling DCI of CRC through SFI-RNTI; scrambling DCI of CRC through TPC-PUCCH-RNTI; scrambling DCI of CRC through TPC-PUCCH-RNTI; or, the DCI of the CRC is scrambled by the TPC-SRS-RNTI.

The second type DCI may refer to DCI affected by a DRX mechanism. Embodiments of the present application do not limit which of the second type of DCI is included at all.

With reference to the third aspect, in a possible implementation manner of the third aspect, the second search space set includes a type3PDCCH common search space set.

Whether the second search space includes which set of common search spaces may be related to which DCI the second type of DCI includes. Embodiments of the present application do not restrict which second type DCI is included, nor naturally which common search space sets are included in the second set of search spaces.

In a fourth aspect, a fourth signal detection method is provided, the method comprising: the network equipment determines that the size of first DCI is a first value, the first value is the size of second-type DCI, the second-type DCI is DCI which can be detected by the terminal equipment within the non-active time under a C-DRX mechanism, and the detection result of the first DCI is used for indicating whether a downlink control channel is detected within a first time period or not; the network device transmits the first DCI of the first value.

The method may be performed by a fourth communication device, which may be a communication apparatus or a communication device capable of supporting a communication apparatus to implement the functions required by the method, such as a system-on-chip. Illustratively, the communication device is a network device.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the sending, by the network device, the first DCI of the first value includes: when the network device sends the first DCI and the second DCI at the same detection opportunity, the network device sends the first DCI with the first value in a candidate downlink control channel resource of a first search space set and/or a candidate downlink control channel resource of a second search space set, where the candidate downlink control channel resource of the first search space set is used for transmitting the first DCI, and the candidate downlink control channel resource of the second search space set is used for transmitting the second DCI.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the second type DCI includes one or any combination of the following: scrambling DCI of CRC by INT-RNTI; scrambling DCI of CRC through SFI-RNTI; scrambling DCI of CRC through TPC-PUCCH-RNTI; scrambling DCI of CRC through TPC-PUCCH-RNTI; or, the DCI of the CRC is scrambled by the TPC-SRS-RNTI.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the second search space set includes a type3PDCCH common search space set.

With regard to the technical effects brought by the fourth aspect or the various embodiments of the fourth aspect, reference may be made to the introduction of the technical effects of the third aspect or the various embodiments of the third aspect, and details are not repeated.

In a fifth aspect, a first communication device is provided, for example, the first communication device as described above. The communication device includes a processor and a transceiver. The processor and the transceiver may be adapted to implement the method described in the first aspect above or in various possible designs of the first aspect. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a terminal device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. The processor is configured to determine that a size of a first DCI is a first value, where the first value is a size of a first type DCI, the first type DCI is DCI which can be detected by a terminal device within an inactive time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period; the transceiver is configured to detect the first DCI according to the first value.

With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the transceiver is configured to detect the first DCI according to the first value by: when the communication device detects a first search space set and a second search space set at the same detection opportunity, according to the first value, the first DCI is detected on candidate downlink control channel resources of the first search space set and candidate downlink control channel resources of the second search space set, wherein the candidate downlink control channel resources of the first search space set are used for transmitting the first DCI, and the candidate downlink control channel resources of the second search space set are used for transmitting the first type DCI.

With reference to the fifth aspect, in a possible embodiment of the fifth aspect, the first type DCI includes one or any combination of the following: scrambling DCI of CRC through SI-RNTI; scrambling DCI of CRC through RA-RNTI;

With reference to the fifth aspect, in a possible implementation manner of the fifth aspect, the second set of search spaces includes one or any combination of the following: a type 0PDCCH common search space set; a type0A PDCCH common search space set; type 1PDCCH common search space set; or, a type 2PDCCH common search space set.

With regard to the technical effects brought by the fifth aspect or the various embodiments of the fifth aspect, reference may be made to the introduction of the technical effects of the first aspect or the various embodiments of the first aspect, and details are not repeated.

In a sixth aspect, a second communication device is provided, for example, the second communication device as described above. The communication device includes a processor and a transceiver. The processor and transceiver may be used to implement the methods described above for the second aspect or the various possible designs of the second aspect. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a network device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. The processor is configured to determine that the size of a first DCI is a first value, where the first value is the size of a first type DCI, the first type DCI is DCI which can be detected by a terminal device within an inactive time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period; the transceiver is configured to transmit the first DCI of the first value.

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the transceiver is configured to transmit the first DCI of the first value by: when the communication device sends the first DCI and the first-type DCI at the same detection opportunity, sending the first DCI of the first value in a candidate downlink control channel resource of a first search space set and/or a candidate downlink control channel resource of a second search space set, where the candidate downlink control channel resource of the first search space set is used for transmitting the first DCI, and the candidate downlink control channel resource of the second search space set is used for transmitting the first-type DCI.

With reference to the sixth aspect, in a possible embodiment of the sixth aspect, the first type DCI includes one or any combination of the following: scrambling DCI of CRC through SI-RNTI; scrambling DCI of CRC through RA-RNTI;

With reference to the sixth aspect, in a possible implementation manner of the sixth aspect, the second search space set includes one of the following or any combination thereof: a type 0PDCCH common search space set; a type0A PDCCH common search space set; a type 1PDCCH common search space set; or, type 2PDCCH common search space set.

With regard to the technical effects brought by the sixth aspect or the various embodiments of the sixth aspect, reference may be made to the introduction of the technical effects of the second aspect or the various embodiments of the second aspect, and details are not repeated.

In a seventh aspect, a third communication device is provided, for example, the third communication device as described above. The communication device includes a processor and a transceiver. The processor and transceiver may be adapted to implement the methods described in the third aspect or the various possible designs of the third aspect described above. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a terminal device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. The processor is configured to determine that the size of the first DCI is a first value, where the first value is the size of a second type of DCI, where the second type of DCI is DCI which can be detected by a terminal device within an activation time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period; the transceiver is configured to detect the first DCI according to the first value.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the transceiver is configured to detect the first DCI according to the first value by: when the communication device detects a first search space set and a second search space set at the same detection opportunity, according to the first value, the first DCI is detected on candidate downlink control channel resources of the first search space set and candidate downlink control channel resources of the second search space set, where the candidate downlink control channel resources of the first search space set are used for transmitting the first DCI, and the candidate downlink control channel resources of the second search space set are used for transmitting the second DCI.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the second type DCI includes one or any combination of the following: scrambling DCI of CRC through INT-RNTI; scrambling DCI of CRC through SFI-RNTI; scrambling DCI of CRC through TPC-PUCCH-RNTI; scrambling DCI of CRC through TPC-PUCCH-RNTI; or, the DCI of the CRC is scrambled by the TPC-SRS-RNTI.

With reference to the seventh aspect, in a possible implementation manner of the seventh aspect, the second search space set includes a type3PDCCH common search space set.

With regard to the technical effects brought by the seventh aspect or the various embodiments of the seventh aspect, reference may be made to the introduction of the technical effects of the third aspect or the various embodiments of the third aspect, and details are not repeated.

In an eighth aspect, a fourth communication device is provided, for example, the fourth communication device as described above. The communication device includes a processor and a transceiver. The processor and transceiver may be adapted to implement the methods described in the fourth aspect or the various possible designs of the fourth aspect described above. Illustratively, the communication device is a chip provided in the communication apparatus. Illustratively, the communication device is a terminal device. Wherein, the transceiver is implemented by an antenna, a feeder, a codec, etc. in the communication device, for example, or, if the communication device is a chip disposed in the communication device, the transceiver is, for example, a communication interface in the chip, and the communication interface is connected with a radio frequency transceiving component in the communication device to implement transceiving of information by the radio frequency transceiving component. The processor is configured to determine that a size of a first DCI is a first value, where the first value is a size of a second type DCI, the second type DCI is a DCI which can be detected by a terminal device within an inactive time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period; the transceiver is configured to transmit the first DCI of the first value.

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the transceiver is configured to transmit the first DCI of the first value by: when the communication apparatus transmits the first DCI and the second DCI at the same detection opportunity, the first DCI of the first value is transmitted in a candidate downlink control channel resource of a first search space set and/or a candidate downlink control channel resource of a second search space set, where the candidate downlink control channel resource of the first search space set is used for transmitting the first DCI, and the candidate downlink control channel resource of the second search space set is used for transmitting the second DCI.

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the second type DCI includes one or any combination of the following: scrambling DCI of CRC by INT-RNTI; scrambling DCI of CRC through SFI-RNTI; scrambling DCI of CRC through TPC-PUCCH-RNTI; scrambling DCI of CRC through TPC-PUCCH-RNTI; or, the DCI of the CRC is scrambled by the TPC-SRS-RNTI.

With reference to the eighth aspect, in a possible implementation manner of the eighth aspect, the second search space set includes a type3PDCCH common search space set.

With respect to the technical effects brought by the eighth aspect or the various embodiments of the eighth aspect, reference may be made to the introduction of the technical effects of the fourth aspect or the various embodiments of the fourth aspect, and details are not repeated.

A ninth aspect provides a fifth communication device, for example, the communication device is the first communication device as described above. The communication device is configured to perform the method of the first aspect or any possible implementation manner of the first aspect. In particular, the communication device may comprise means for performing the method of the first aspect or any of its possible implementations, for example comprising a processing means and a transceiver means coupled to each other. Illustratively, the communication device is a communication apparatus. Illustratively, the communication device is a terminal device. The processing module is configured to determine that a size of a first DCI is a first value, where the first value is a size of a first type DCI, the first type DCI is DCI which can be detected by a terminal device within an inactive time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period; the transceiver module is configured to detect the first DCI according to the first value.

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the transceiver module is configured to detect the first DCI according to the first value by: when the communication device detects a first search space set and a second search space set at the same detection opportunity, according to the first value, detecting the first DCI in candidate downlink control channel resources of the first search space set and candidate downlink control channel resources of the second search space set, where the candidate downlink control channel resources of the first search space set are used for transmitting the first DCI, and the candidate downlink control channel resources of the second search space set are used for transmitting the first DCI type.

With reference to the ninth aspect, in a possible embodiment of the ninth aspect, the first type DCI includes one or any combination of the following: scrambling DCI of CRC through SI-RNTI; scrambling DCI of CRC through RA-RNTI;

With reference to the ninth aspect, in a possible implementation manner of the ninth aspect, the second search space set includes one or any combination of the following: a type 0PDCCH common search space set; a type0A PDCCH common search space set; type 1PDCCH common search space set; or, a type 2PDCCH common search space set.

With regard to the technical effects brought by the various embodiments of the ninth aspect or the ninth aspect, reference may be made to the introduction of the technical effects of the various embodiments of the first aspect or the first aspect, and details are not repeated.

A tenth aspect provides a sixth communication device, for example, the communication device is the second communication device as described above. The communication device is configured to perform the method of the second aspect or any possible implementation manner of the second aspect. In particular, the communication device may comprise means for performing the method of the second aspect or any possible implementation manner of the second aspect, for example comprising a processing means and a transceiver means coupled to each other. Illustratively, the communication device is a communication apparatus. Illustratively, the communication device is a network device. The processing module is configured to determine that the size of a first DCI is a first value, where the first value is the size of a first type DCI, the first type DCI is DCI which can be detected by a terminal device within an inactive time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period; the transceiver module is configured to transmit the first DCI having the first value.

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the transceiver module is configured to transmit the first DCI of the first value by: when the communication device sends the first DCI and the first-type DCI at the same detection opportunity, sending the first DCI of the first value in a candidate downlink control channel resource of a first search space set and/or a candidate downlink control channel resource of a second search space set, where the candidate downlink control channel resource of the first search space set is used for transmitting the first DCI, and the candidate downlink control channel resource of the second search space set is used for transmitting the first-type DCI.

With reference to the tenth aspect, in a possible embodiment of the tenth aspect, the first type DCI includes one or any combination of the following: scrambling DCI of CRC through SI-RNTI; scrambling DCI of CRC through RA-RNTI;

With reference to the tenth aspect, in a possible implementation manner of the tenth aspect, the second search space set includes one or any combination of the following: a type 0PDCCH common search space set; a type0A PDCCH common search space set; type 1PDCCH common search space set; or, a type 2PDCCH common search space set.

With respect to the technical effects brought by the tenth aspect or the various embodiments of the tenth aspect, reference may be made to the introduction of the technical effects of the second aspect or the various embodiments of the second aspect, and details are not repeated.

In an eleventh aspect, a seventh communication device is provided, for example, the communication device is the first communication device as described above. The communication device is configured to perform the method of the first aspect or any possible implementation manner of the first aspect. In particular, the communication device may comprise means for performing the method of the first aspect or any of its possible implementations, for example comprising a processing means and a transceiver means coupled to each other. Illustratively, the communication device is a communication apparatus. Illustratively, the communication device is a terminal device. The processing module is configured to determine that the size of a first DCI is a first value, where the first value is the size of a second-type DCI, the second-type DCI is DCI which can be detected by a terminal device within an activation time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period; the transceiver module is configured to detect the first DCI according to the first value.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the transceiver module is configured to detect the first DCI according to the first value by: when the communication device detects a first search space set and a second search space set at the same detection opportunity, according to the first value, the first DCI is detected on candidate downlink control channel resources of the first search space set and candidate downlink control channel resources of the second search space set, where the candidate downlink control channel resources of the first search space set are used for transmitting the first DCI, and the candidate downlink control channel resources of the second search space set are used for transmitting the second DCI.

With reference to the eleventh aspect, in a possible embodiment of the eleventh aspect, the second type of DCI includes one or any combination of: scrambling DCI of CRC through INT-RNTI; scrambling DCI of CRC through SFI-RNTI; scrambling DCI of CRC through TPC-PUCCH-RNTI; scrambling DCI of CRC through TPC-PUCCH-RNTI; or, the DCI of the CRC is scrambled by the TPC-SRS-RNTI.

With reference to the eleventh aspect, in a possible implementation manner of the eleventh aspect, the second search space set includes a type3PDCCH common search space set.

With regard to the technical effects brought by the eleventh aspect or the various embodiments of the eleventh aspect, reference may be made to the description of the technical effects of the third aspect or the various embodiments of the third aspect, and details are not repeated.

In a twelfth aspect, an eighth communication device is provided, for example, the communication device is the fourth communication device as described above. The communication device is configured to perform the method of the fourth aspect or any possible implementation manner of the fourth aspect. In particular, the communication device may comprise means for performing the method of the fourth aspect or any possible implementation manner of the fourth aspect, for example comprising a processing means and a transceiver means coupled to each other. Illustratively, the communication device is a communication apparatus. Illustratively, the communication device is a network device. The processing module is configured to determine that the size of a first DCI is a first value, where the first value is the size of a second-type DCI, the second-type DCI is DCI which can be detected by a terminal device within an inactive time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period; the transceiver module is configured to transmit the first DCI with the first value.

With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the transceiver module is configured to transmit the first DCI of the first value by: when the communication device sends the first DCI and the second DCI at the same detection time, the first DCI of the first value is sent in a candidate downlink control channel resource of a first search space set and/or a candidate downlink control channel resource of a second search space set, where the candidate downlink control channel resource of the first search space set is used for transmitting the first DCI, and the candidate downlink control channel resource of the second search space set is used for transmitting the second DCI.

With reference to the twelfth aspect, in a possible embodiment of the twelfth aspect, the second type DCI includes one or any combination of the following: scrambling DCI of CRC by INT-RNTI; scrambling DCI of CRC through SFI-RNTI; scrambling DCI of CRC through TPC-PUCCH-RNTI; scrambling DCI of CRC through TPC-PUCCH-RNTI; or, the DCI of the CRC is scrambled by the TPC-SRS-RNTI.

With reference to the twelfth aspect, in a possible implementation manner of the twelfth aspect, the second search space set includes a type3PDCCH common search space set.

With regard to the technical effects brought by the twelfth aspect or the various embodiments of the twelfth aspect, reference may be made to the introduction of the technical effects of the fourth aspect or the various embodiments of the fourth aspect, and details are not repeated.

In a thirteenth aspect, a ninth communications apparatus is provided. The communication device may be the first communication device in the above method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions that, when executed by the processor, cause the fifteenth communication device to perform the method of the first aspect or any one of the possible implementations of the first aspect.

Wherein, the ninth communication apparatus may further include a communication interface, which may be a transceiver in the terminal device, for example, implemented by an antenna, a feeder, a codec, and the like in the communication apparatus, or, if the ninth communication apparatus is a chip disposed in the terminal device, the communication interface may be an input/output interface of the chip, for example, an input/output pin, and the like.

In a fourteenth aspect, a tenth communications apparatus is provided. The communication device may be the second communication device in the above method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a network device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the sixteenth communication device to perform the method of the second aspect or any one of the possible embodiments of the second aspect.

Wherein, the tenth communication apparatus may further include a communication interface, which may be a transceiver in the network device, for example, implemented by an antenna, a feeder, a codec, etc. in the communication apparatus, or, if the tenth communication apparatus is a chip disposed in the network device, the communication interface may be an input/output interface of the chip, for example, an input/output pin, etc.

A fifteenth aspect provides an eleventh communications apparatus. The communication device may be the third communication device in the above method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a terminal device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the fifteenth communication device to perform the method of the third aspect or any one of the possible embodiments of the third aspect.

Wherein, the eleventh communication means may further comprise a communication interface, which may be a transceiver in the terminal device, for example, implemented by an antenna, a feeder, a codec, etc. in the communication means, or, if the eleventh communication means is a chip provided in the terminal device, the communication interface may be an input/output interface of the chip, for example, an input/output pin, etc.

In a sixteenth aspect, a twelfth communications device is provided. The communication device may be the fourth communication device in the above method design. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a network device. The communication device includes: a memory for storing computer executable program code; and a processor coupled with the memory. Wherein the program code stored by the memory comprises instructions that, when executed by the processor, cause the sixteenth communication device to perform the method of the fourth aspect or any one of the possible embodiments of the fourth aspect.

Wherein, the twelfth communication device may further include a communication interface, and the communication interface may be a transceiver in the network device, for example, implemented by an antenna, a feeder, a codec, and the like in the communication device, or, if the twelfth communication device is a chip disposed in the network device, the communication interface may be an input/output interface of the chip, for example, an input/output pin, and the like.

A seventeenth aspect provides a first communication system, which may include the first communication apparatus of the fifth aspect, the fifth communication apparatus of the ninth aspect, or the ninth communication apparatus of the thirteenth aspect, and include the second communication apparatus of the sixth aspect, the sixth communication apparatus of the tenth aspect, or the tenth communication apparatus of the fourteenth aspect.

An eighteenth aspect provides a second communication system, which may include the third communication apparatus of the seventh aspect, the seventh communication apparatus of the eleventh aspect, or the eleventh communication apparatus of the fifteenth aspect, and include the fourth communication apparatus of the eighth aspect, the eighth communication apparatus of the twelfth aspect, or the twelfth communication apparatus of the sixteenth aspect.

A nineteenth aspect provides a computer storage medium having instructions stored thereon, which when executed on a computer, cause the computer to perform the method of the first aspect or any one of the possible designs of the first aspect.

A twentieth aspect provides a computer storage medium having instructions stored thereon that, when executed on a computer, cause the computer to perform the method of the second aspect or any one of the possible designs of the second aspect.

A twenty-first aspect provides a computer storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method as set forth in the third aspect or any one of the possible designs of the third aspect.

In a twenty-second aspect, there is provided a computer storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the method of the fourth aspect described above or any one of the possible designs of the fourth aspect.

A twenty-third aspect provides a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method as described in the first aspect or any one of the possible designs of the first aspect.

A twenty-fourth aspect provides a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method as set forth in the second aspect or any one of the possible designs of the second aspect.

A twenty-fifth aspect provides a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method of the third aspect or any one of the possible designs of the third aspect.

A twenty-sixth aspect provides a computer program product comprising instructions stored thereon, which when run on a computer, cause the computer to perform the method of the fourth aspect or any one of the possible designs of the fourth aspect.

In the embodiment of the application, the terminal equipment only needs to detect the DCI according to the size with a small difference in detection, so that the frequency of detecting the DCI with different sizes by the terminal equipment is reduced, the complexity of detecting the terminal equipment is reduced, and the power consumption of the terminal equipment is reduced.

Drawings

FIG. 1 is a schematic diagram of a time-frequency resource grid;

fig. 2 is a diagram illustrating CCEs included in an aggregation level set and candidate PDCCHs;

FIG. 3 is a diagram of REG;

FIG. 4 is a diagram illustrating index numbers of CCEs within the CORESET to which a PDCCH belongs;

FIG. 5 is a diagram illustrating a terminal device detecting PDCCH candidates in a search space set;

FIG. 6 is a diagram illustrating an on duration period in a DRX cycle;

FIG. 7 is a diagram illustrating a DRX mechanism;

fig. 8 is a schematic diagram of an operation process of the terminal device under the DRX mechanism;

fig. 9 is a diagram of a search space set for which a terminal device needs to detect PDCCH-based WUS simultaneously and a common search space set that is not affected by a DRX mechanism;

FIG. 10 is a schematic diagram of an application scenario according to an embodiment of the present application;

fig. 11 is a flowchart of a signal detection method according to an embodiment of the present application;

fig. 12 is a flowchart of another signal detection method provided in the embodiments of the present application;

fig. 13 is a schematic structural diagram of a communication apparatus capable of implementing functions of a terminal device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a communication apparatus capable of implementing functions of a network device according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a communication apparatus capable of implementing functions of a terminal device according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of a communication apparatus capable of implementing functions of a network device according to an embodiment of the present application;

fig. 17A to 17B are schematic diagrams of two structures of a communication device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1) Terminal equipment, including devices that provide voice and/or data connectivity to a user, may include, for example, handheld devices with wireless connection capability or processing devices connected to wireless modems. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device communication (D2D) terminal device, a vehicle-to-all (V2X) terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (internet of things) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station (remote station), an access point (access point, AP), a remote terminal (remote), an access terminal (access terminal), a user terminal (user terminal), a user agent (user), or a user equipment (user), etc. For example, mobile telephones (otherwise known as "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-embedded mobile devices, and the like may be included. For example, personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, radio Frequency Identification (RFID), sensors, global Positioning Systems (GPS), laser scanners, and so forth.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment or intelligent wearable equipment and the like, and is a general term for applying wearable technology to carry out intelligent design and develop wearable equipment for daily wearing, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device may be worn directly on the body or may be a portable device integrated into the user's clothing or accessory. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device has full functions and large size, and can realize complete or partial functions without depending on a smart phone, for example: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets, smart helmets, smart jewelry and the like for monitoring physical signs.

The various terminal devices described above, if located on a vehicle (e.g. placed in or mounted in a vehicle), may be considered to be vehicle-mounted terminal devices, also referred to as on-board units (OBUs), for example.

2) Network devices, for example, including Access Network (AN) devices, such as base stations (e.g., access points), may refer to devices in AN access network that communicate with wireless terminal devices over one or more cells over AN air interface, or access network devices in a vehicle-to-everything (V2X) technology, for example, are Road Side Units (RSUs). The base station may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The RSU may be a fixed infrastructure entity supporting V2X applications and may exchange messages with other entities supporting V2X applications. The access network device may also coordinate attribute management for the air interface. For example, the access network device may include an evolved Node B (NodeB or eNB or e-NodeB) in a Long Term Evolution (LTE) system or an advanced long term evolution (LTE-a) system, or may also include a next generation Node B (gNB) in a 5G NR system, or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud access network (Cloud RAN) system, which is not limited in the embodiments of the present application.

Of course, the network device may also include a core network device, but since the technical solution provided in the embodiment of the present application mainly relates to an access network device, hereinafter, unless otherwise specified, "network device" described hereinafter refers to an access network device.

3) And DRX, under the DRX mechanism, the terminal equipment stops monitoring the PDCCH for a period of time. DRX is divided into two types, IDLE (IDLE) DRX and CONNECTED-DRX (C-DRX).

IDLE DRX, that is, discontinuous reception when a terminal device is in an IDLE state, because there is no RRC connection and no dedicated resource of the terminal device when the terminal device is in the IDLE state, the terminal device mainly monitors a call channel and a broadcast channel in IDLE DRX, and the purpose of discontinuous reception can be achieved as long as a fixed period is defined. The terminal equipment needs to enter the connection state from the idle state first if the terminal equipment needs to monitor the user data channel.

C-DRX, i.e., DRX with the terminal device in an RRC connected state. Under C-DRX, the terminal equipment periodically and blindly detects the candidate PDCCH. If the PDCCH is not detected within a period of time, the terminal device enters an OFF state (OFF), which is alternatively referred to as a dormant state or a sleep state, and the like, and the terminal device stops detecting the PDCCH candidate to reduce the energy consumption of the terminal device for detecting the PDCCH candidate.

4) A downlink control channel, such as a PDCCH, or an Enhanced Physical Downlink Control Channel (EPDCCH), or may also include other downlink control channels. The details are not intended to be limiting.

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

And, unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects. For example, the first information and the second information are only for distinguishing different signaling, and do not indicate the difference in content, priority, transmission order, importance, or the like of the two information.

Having described some of the concepts related to the embodiments of the present application, the following describes features of the embodiments of the present application.

In the NR system, a basic unit on a frequency domain is one subcarrier, and a subcarrier spacing (SCS) may be 15KHz or 30KHz, etc. In the physical layer of NR, the unit of uplink/downlink frequency domain resources is a Physical Resource Block (PRB), and each PRB is composed of 12 consecutive subcarriers in the frequency domain. Please refer to fig. 1, which shows a downlink time-frequency resource grid.

As shown in fig. 1, each element (i.e., each small box) in the time-frequency resource grid is referred to as a Resource Element (RE). An RE is the smallest physical resource, containing one subcarrier within one Orthogonal Frequency Division Multiplexing (OFDM) symbol. The uplink time-frequency resource grid is similar to the downlink time-frequency resource grid. In the NR system, a basic time unit for downlink resource scheduling is a slot (slot), and generally, one slot consists of 14 OFDM symbols in time. Among them, in FIG. 1

And representing the downlink bandwidth value of the system.

The base station transmits a Physical Downlink Shared Channel (PDSCH) and a PDCCH to the terminal device. In order to correctly receive the PDSCH, the terminal device needs to demodulate the PDCCH first, and the DCI carried by the PDCCH includes relevant information required by the terminal device to receive the PDSCH, such as the location and size of time-frequency resources of the PDSCH, or multi-antenna configuration information. The PDCCH is transmitted in a control-resource set (CORESET), which includes a plurality of PRBs in a frequency domain, 1 to 3 OFDM symbols in a time domain, and may be located at any position within a slot.

A control-channel element (CCE) is a basic unit constituting a PDCCH. In CORESET, each CCE has a corresponding index number, which can be referred to in fig. 2. A given PDCCH may consist of 1, 2, 4, 8, or 16 CCEs, and the specific value of the number of CCEs constituting the PDCCH is determined by DCI payload size (DCI payload size) and the required coding rate. The number of CCEs constituting a PDCCH is also referred to as an Aggregation Level (AL). The base station can adjust the aggregation level of the PDCCH according to factors such as the actual transmission wireless channel state and the like, thereby realizing the link self-adaptive transmission. For example, the aggregation levels of PDCCHs transmitted by the base station at different time instances may be different. While one CCE corresponds to 6 Resource-element groups (REGs) on the physical Resource, a REG occupies one OFDM symbol in the time domain and one Resource block in the frequency domain (i.e., includes 12 consecutive subcarriers in the frequency domain), which can be referred to fig. 3. Fig. 3 is a PDCCH demodulation reference signal (DMRS) diagram, and REs indicated by three arrows represent three REs carrying DMRSs in the REG.

A search space (search space) is a set of PDCCH candidates (PDCCH candidates) at a certain aggregation level. Since the aggregation level of the PDCCH actually transmitted by the base station is variable with time and since no relevant signaling is notified to the terminal device, the terminal device needs to perform blind detection on the PDCCH at different aggregation levels. The PDCCH to be blind detected is also referred to as a PDCCH candidate, and may include multiple PDCCH candidates in one aggregation level. The terminal device decodes all candidate PDCCHs consisting of CCEs in the search space, and if a Cyclic Redundancy Check (CRC) check passes, the content of the decoded PDCCH is considered valid for the terminal device, and the terminal device can process the decoded related information. For PDCCH candidates in an aggregation level, reference may be made to fig. 2, where the PDCCH with slash in fig. 2 represents the PDCCH candidates in the corresponding aggregation level.

In the NR system, in order to better control the complexity of blind detection of a downlink control channel by a terminal device, a base station may configure one or more search space sets (search space sets) for the terminal device. Wherein each search space set comprises search spaces of one or more aggregation levels. That is, the search space set may correspond to one or more aggregation levels and the number of PDCCH candidates corresponding to each aggregation level.

The search space set may be divided into two types, a common search space set (CSS set) and a UE-specific search space set (USS set). The PDCCH of the common search space set is mainly used to instruct the terminal device to receive a system message, a Random Access Response (RAR) or a paging message, and the like. In the existing NR protocol, the common search space set may include a type 0PDCCH common search space set (type 0-PDCCH cssset), a type0A PDCCH common search space set (type 0A-PDCCH cssset), a type 1PDCCH common search space set (type 1-PDCCH cssset), a type 2PDCCH common search space set (type 2-PDCCH cssset), and a type3PDCCH common search space set (type 3-PDCCH cssset). And the PDCCH of the UE-dedicated search space set is used for correspondingly scheduling unicast uplink data or downlink data for the terminal equipment.

When the base station configures the search space set for the terminal device, an index number and an index number of CORESET associated with the search space set are configured for each search space set, and the CORESET associated with one search space set determines CCE indexes of the candidate PDCCHs of the search space set in the CORESET. For example, a total of 24 CCEs in the CORESET, and the number of PDCCH candidates corresponding to aggregation level AL =2 in the search space set is 6, then the CCE index number in the CORESET to which each PDCCH candidate belongs may refer to fig. 4, where the hatched area in fig. 4 represents PDCCH candidates.

In the time domain, the terminal device detects candidate PDCCHs in the search space sets at certain time intervals, and thus configures some time domain configuration information for each search space set, where the time domain configuration information may include:

and (3) detection period: detecting the time interval of the search space set, wherein the unit is slot;

time slot offset: starting from a detection period to actually detect the time slot offset between search space sets, wherein the time slot offset is generally smaller than the value of the detection period;

the number of time slots: continuously detecting the number of time slots of the search space set, wherein the number of the time slots is generally smaller than the value of a detection period;

symbol position: within each slot, the position of the starting symbol of the CORESET associated with the space set is searched.

For ease of understanding, the meaning of each parameter above is presented in specific examples. As shown in fig. 5, the detection period is 10 slots, the slot offset is 3 slots, the number of slots is 2 slots, the CORESET associated with the search space set is a CORESET that occupies 2 OFDM symbols, and the symbol positions are OFDM symbol 0 and OFDM symbol 7 in a slot. In the above example, the terminal device detects PDCCH candidates of the search space set in CORESET on symbol 0 and symbol 7 in slot 3 and slot 4 in each period with a length of 10 slots, and CORESET occupies 2 OFDM symbols in the time domain.

Different types of DCI, for example, DCI for scheduling downlink/uplink data transmission, DCI for implementing a power control command, DCI for implementing a slot format indication, or DCI for implementing a resource preemption indication, generally correspond to different sizes (sizes). Therefore, the DCI may be divided into different formats according to the type of the indication information, and each format corresponds to a DCI size (i.e., the number of source bits carried by the DCI) or a parsing manner. In the NR system, supported DCI formats (DCI formats) are shown in table 1. When the base station configures the search space sets, the base station configures the DCI formats corresponding to the search space sets, for example, configures the DCI format corresponding to one search space set to be format 0_1 or format 1_1 shown in table 1.

Table 1

For DCI with different functions, its CRC may be scrambled by different radio-network temporary indicators (RNTIs).

For example, for DCI detected in type0-PDCCH CSS set and type0A-PDCCH CSS set by a terminal device, RNTI used for CRC for scrambling the DCI is System Information (SI) -RNTI. The DCI may be used to schedule a system message, such as a System Information Block (SIB) 1, for example.

For the DCI detected by the terminal device in type1-PDCCH CSS set, the RNTI used for scrambling the CRC of the DCI is Random Access (RA) -RNTI or Temporary Cell (TC) -RNTI. The DCI may be used to schedule RAR.

For DCI detected by the terminal device in type2-PDCCH CSS set, RNTI used for CRC scrambling the DCI is paging (P) -RNTI. The DCI may be used to schedule paging information.

The formats of the DCI with the SI-RNTI scrambled CRC, the DCI with the RA-RNTI scrambled CRC, the DCI with the TC-RNTI scrambled CRC and the DCI with the P-RNTI scrambled CRC are the DCI formats 1_0 shown in Table 1.

In the NR system, the terminal device may be in different states. One of the states is the RRC _ CONNECTED state. In the RRC _ CONNECTED state, the terminal device has already established an RRC context (context), i.e. the parameters necessary for the communication between the terminal device and the radio access network are known to the terminal device and to the radio access network. The RRC _ CONNECTED state is mainly used for data transmission between the radio access network and the terminal device.

In general, packet-based data streams are typically bursty, with data being transmitted for a period of time, but not for a subsequent longer period of time. Therefore, in the NR system, a DRX process flow may be configured for the terminal device, and when there is no data transmission, the terminal device may stop detecting the PDCCH and stop receiving corresponding data to reduce power consumption, thereby increasing the service time of the battery.

In DRX, the base station may configure a DRX cycle for the terminal device in the RRC _ CONNECTED state, where the DRX cycle includes an "on duration" period. Reference is made to fig. 6 for this.

During the "on duration" period, the terminal device may detect the PDCCH. The terminal device starts a timer at the time domain start position of each DRX cycle (i.e., the time domain start position of the "on duration" period), where the time length of the timer is the length of the "on duration" period, and the timer may be referred to as a DRX-on duration timer or a duration timer. The range of the timing duration of the duration timer is generally 1-1200 ms, and the terminal device detects the PDCCH within the timing duration of the duration timer. If the terminal device does not detect the PDCCH within the timing duration of the duration timer, the terminal device enters a sleep state after the duration timer expires, that is, the terminal device may turn off the receiving circuit within the remaining time period of the current DRX cycle, thereby reducing the power consumption of the terminal device. And if the terminal device detects the PDCCH within the timing duration of the duration timer, the terminal device starts an inactivity timer (DRX-inactivity timer) in the DRX mechanism. During the running time of the inactivity timer, if the terminal device continues to detect the PDCCH, the terminal device resets (restart) the inactivity timer so that the inactivity timer restarts timing. If the inactivity timer is running, even if the originally configured duration timer expires (i.e., the "on duration" period ends), the terminal device still needs to continue detecting the PDCCH until the inactivity timer expires. The process can be seen in fig. 7.

In the DRX mechanism, there are some other timers, such as DRX downlink retransmission timer (DRX-retransmission timer dl) or DRX uplink retransmission timer (DRX-retransmission timer ul). If any one of the duration timer, inactivity timer, downlink retransmission timer or uplink retransmission timer is running, the terminal device is in an "active time". In the DRX mechanism, if the terminal device is in "active time", the terminal device needs to detect the PDCCH. Note that there are other situations that may also make the terminal device in "active time", which are not described herein. In the DRX cycle, the time period other than the active time may be understood as a non-active time (non-active time), and if the terminal device is in the "non-active time", the terminal device does not need to detect the PDCCH.

In NR systems, the terminal device will operate at a larger radio frequency and baseband bandwidth. In a DRX cycle, the terminal device needs to wake up from a sleep state, start a radio frequency and a baseband circuit, acquire time-frequency synchronization, and then detect a PDCCH in an "on duration" period, which requires a lot of energy consumption. While data transmission in general tends to be bursty and sparse in time, unnecessary energy consumption is generated for the terminal device if the base station does not have any data scheduling for the terminal device during the "on duration" period. Therefore, in order to save power consumption, WUS may be introduced in the NR system, and may be combined with the DRX mechanism in the RRC _ CONNECTED state, as shown in fig. 8, where the horizontal axis of fig. 8 represents time and the vertical axis represents power consumption of the terminal device.

For a terminal device supporting WUS, before the time domain start position of the "on duration" period of each DRX cycle, there is a "WUS time (WUS occasion)" corresponding to the "on duration" period, where WUS occasion may be understood as a subframe (subframe) or slot where WUS is located, or WUS occasion may be also referred to as a WUS occasion, or the like, a detection time (or, for a base station, a transmission time), or the like. The base station may transmit WUS in a Discontinuous Transmission (DTX) form for the terminal device on the "WUS occasion", that is, the base station may decide whether to transmit WUS on the "WUS occasion" according to a requirement of scheduling data, and the terminal device needs to determine whether the base station transmits WUS by detecting WUS on the "WUS occasion". The terminal device may detect and demodulate WUS in a very low power consumption state while in a sleep state (e.g., turning on only part of the modem's functionality or using a simple receive circuit). With continued reference to fig. 8, when the terminal device does not detect a WUS on the "WUS occasion", or the detected WUS indicates that the terminal device has no data scheduling for the corresponding "on duration" period, the terminal device may directly enter the sleep state without detecting a PDCCH for the "on duration" period. If the terminal device detects a WUS in the WUS event, or the detected WUS indicates that the terminal device has data to schedule in the corresponding "on duration" period, the terminal device will wake up from the sleep state, that is, the terminal device may start the duration timer according to the aforementioned DRX mechanism to detect the PDCCH in the "on duration" period. In fig. 8, a vertical line indicates that the terminal device wakes up from a sleep state, a horizontal line indicates that the terminal device detects the PDCCH, and a diagonal line indicates that the terminal device processes data, a control channel, and the like.

For the design of WUS, however, one possible solution is to multiplex the PDCCH in the existing NR system, that is, the WUS is designed as a downlink control channel, for example, the PDCCH, and the terminal device can detect the WUS by detecting the PDCCH. The WUS may be referred to as PDCCH-based WUS or PDCCH-based power saving channel/signal (PDCCH-based power saving channel/signal).

In the C-DRX mechanism, the terminal device is not affected by the DRX mechanism for the detection of DCI scrambled by SI-RNTI, DCI scrambled by RA-RNTI, DCI scrambled by TC-RNTI, and DCI scrambled by P-RNTI, that is, even if the terminal device is not in the "active time" of the DRX cycle, the terminal device may still need to detect the candidate control channel resources of the common search space set to which these DCIs corresponding at the corresponding time. Then when the terminal device detects PDCCH-based WUS, it is likely that the above-described DCI unaffected by the DRX mechanism needs to be detected at the same time. Referring to fig. 9, at time 1, the terminal device needs to detect both the PDCCH-based WUS search space set and the common search space set that is not affected by the DRX mechanism. In this case, it is obvious that the number of times the terminal device detects the DCI size increases, increasing the complexity and power consumption of the terminal device to detect the PDCCH-based WUS. In fig. 9, the time points with diagonal lines represent the time points at which the terminal device needs to detect the PDCCH-based WUS search space set, and the time points with horizontal lines represent the time points at which the terminal device needs to detect the common search space set that is not affected by the DRX mechanism.

In view of this, the technical solutions of the embodiments of the present application are provided. In this embodiment of the present application, the terminal device may determine the size of the first DCI according to the size of the first type DCI, for example, the size of the first DCI may be the same as the size of the first type DCI, and the terminal device only needs to detect the DCI according to the same size when detecting, so that the number of times that the terminal device detects DCI with different sizes is reduced, and the complexity of detection of the terminal device is reduced, thereby reducing the power consumption of the terminal device.

The technical solution provided in the embodiment of the present application may be applied to the 4G system, such as the LTE system, or may be applied to the 5G system, such as the NR system, or may also be applied to the next generation mobile communication system or other similar communication systems, which is not limited specifically.

A network architecture applied in the embodiment of the present application is described below, please refer to fig. 10.

Fig. 10 includes a network device and a terminal device, and the terminal device is connected to one network device. Of course, the number of terminal devices in fig. 10 is only an example, and in practical applications, the network device may provide services for a plurality of terminal devices. The network device in fig. 10, and each of a part of the plurality of terminal devices or all of the plurality of terminal devices may implement the technical solution provided in the embodiment of the present application. In addition, the terminal device in fig. 10 is a mobile phone as an example, but is not limited to this in practical application.

The network device in fig. 10 is, for example, an access network device, such as a base station, or may also be a device such as an RSU. Wherein, the base station is corresponding to different systemsE.g. in fourth generation mobile communication technology (the 4) ^th generation, 4G) system may correspond to an eNB, and a 5G system may correspond to a gNB. Of course, the technical solution provided in the embodiment of the present application may also be applied to a future mobile communication system, and therefore, the network device in fig. 10 may also correspond to an access network device in the future mobile communication system.

The technical scheme provided by the embodiment of the application is described below with reference to the accompanying drawings.

The embodiment of the present application provides a first signal detection method, please refer to fig. 11, which is a flowchart of the method. In the following description, the method is applied to the network architecture shown in fig. 10 as an example. In addition, the method may be performed by two communication apparatuses, for example, a first communication apparatus and a second communication apparatus, where the first communication apparatus may be a network device or a communication apparatus capable of supporting the network device to implement the functions required by the method, or the first communication apparatus may be a terminal device or a communication apparatus capable of supporting the terminal device to implement the functions required by the method, and may of course be other communication apparatuses such as a system on chip. The same applies to the second communication apparatus, which may be a network device or a communication apparatus capable of supporting the network device to implement the functions required by the method, or a terminal device or a communication apparatus capable of supporting the terminal device to implement the functions required by the method, and of course, other communication apparatuses such as a system on a chip may also be used. The implementation manners of the first communication apparatus and the second communication apparatus are not limited, for example, the first communication apparatus may be a network device, the second communication apparatus is a terminal device, or both the first communication apparatus and the second communication apparatus are network devices, or both the first communication apparatus and the second communication apparatus are terminal devices, or the first communication apparatus is a network device, and the second communication apparatus is a communication apparatus capable of supporting the terminal device to implement the functions required by the method, and so on. The network device is, for example, a base station.

For convenience of introduction, in the following, the method is performed by a network device and a terminal device as an example, that is, the first communication apparatus is a network device and the second communication apparatus is a terminal device as an example. Since the present embodiment is applied to the network architecture shown in fig. 10 as an example, the network device described below may be a network device in the network architecture shown in fig. 10, and the terminal device described below may be a terminal device in the network architecture shown in fig. 10.

S111, the network device determines that the size of the first DCI is a first value, the first value is determined according to the size of the first DCI, the first DCI is DCI which can be detected by the terminal device within the non-active time under the C-DRX mechanism, and the detection result of the first DCI is used for indicating whether to detect the downlink control channel within a first time period.

The first type DCI is, for example, DCI not affected by the DRX mechanism, that is, the terminal device is not affected by the DRX mechanism when detecting the first type DCI, and even if the terminal device is in an inactive time of a DRX cycle, the first type DCI may need to be detected. Of course, the embodiment of the present application does not limit when the terminal device needs to detect the first type DCI, for example, when the detection time of the first type DCI is within the activation time of the DRX cycle, the terminal device detects the first type DCI within the activation time of the DRX cycle; or, if the detection time of the first type DCI is within the inactive time of the DRX cycle, the terminal device detects the first type DCI within the inactive time of the DRX cycle; or the detection time of the first type DCI may be within the active time and the inactive time of the DRX cycle, and the terminal device detects the first type DCI within both the active time and the inactive time of the DRX cycle.

For example, the first type DCI may include one or any combination of the following: the DCI of the CRC is scrambled by SI-RNTI, the DCI of the CRC is scrambled by RA-RNTI, the DCI of the CRC is scrambled by TC-RNTI or the DCI of the CRC is scrambled by P-RNTI. For example, the first type DCI includes DCI in which CRC is scrambled by SI-RNTI, DCI in which CRC is scrambled by RA-RNTI, DCI in which CRC is scrambled by TC-RNTI, and DCI in which CRC is scrambled by P-RNTI, or the first type DCI includes only DCI in which CRC is scrambled by SI-RNTI, or the first type DCI includes DCI in which CRC is scrambled by SI-RNTI, DCI in which CRC is scrambled by RA-RNTI, and DCI in which CRC is scrambled by TC-RNTI, and so on, which are not limited in particular. In addition, in addition to the several DCIs listed here, other DCIs may also be included within the first type of DCI if they are also unaffected by the DRX mechanism.

If the first type of DCI includes one of DCI scrambled CRC by SI-RNTI, DCI scrambled CRC by RA-RNTI, DCI scrambled CRC by TC-RNTI, or DCI scrambled CRC by P-RNTI, or any combination thereof, the size of the DCI scrambled CRC by SI-RNTI, DCI scrambled CRC by RA-RNTI, DCI scrambled CRC by TC-RNTI, and DCI scrambled CRC by P-RNTI is generally the same. For example, DCI with CRC scrambled by SI-RNTI, DCI with CRC scrambled by RA-RNTI, DCI with CRC scrambled by TC-RNTI, and DCI with CRC scrambled by P-RNTI, the sizes of these DCIs may be determined according to the bandwidth of CORESET 0 and the number of bits of some related information fields predefined by the protocol, for example, the sizes of these DCIs 37, 39, 41, etc.

Regarding the size of the first DCI, it may be determined according to the size of the first type DCI. For example, the size of the first DCI is made equal to the size of the first type DCI. For example, if the size of the first type DCI is 37, the size of the first DCI may also be 37. Under the condition that the size of the first DCI is the same as that of the first type DCI, if the terminal equipment needs to detect the first DCI and the first type DCI simultaneously, the terminal equipment only needs to detect the DCI with one size, and does not need to detect the DCIs with multiple sizes, so that the complexity of detection of the terminal equipment is reduced, and the power consumption of the terminal equipment is also saved.

As an optional way, the first DCI may implement the function of WUS, and a channel carrying the first DCI may be a PDCCH-based WUS, or referred to as a PDCCH-based power saving channel, or referred to as a PDCCH-based power saving signal.

Or, as another optional manner, the first DCI may implement a function of sleep (GTS) signaling, and a channel carrying the first DCI may be a PDCCH based GTS, or referred to as a PDCCH based power saving channel, or referred to as a PDCCH based power saving signal.

The PDCCH based WUS and PDCCH based GTS may be referred to as PDCCH based power providing signal or PDCCH based power providing signal.

GTS is also introduced to reduce power consumption of the terminal device, or GTS may also be referred to as reducing signaling for PDCCH detection. The GTS may instruct the terminal device not to monitor the PDCCH for a period of time, which may be referred to as a GTS duration. The time that the terminal device indicated by the GTS does not monitor the PDCCH is, for example, several time slots, the terminal device may wake up to monitor the PDCCH before the active time ends, or the GTS may indicate that the terminal device does not monitor the PDCCH until the start time of the next DRX cycle. The network device may send GTS at the active time of the DRX cycle, and the terminal device may detect GTS at the active time of the DRX cycle. Of course more generally, GTS signals may also be used if the DRX mechanism is not configured.

Wherein, the size of the first DCI may be protocol-specified, or configured by a network device, etc.

The detection result of the first DCI is used to indicate whether to detect the downlink control channel in the first time period. For example, the first DCI may be used to implement the function of the WUS. It is understood that the first DCI is a WUS, or the first DCI includes some other information besides information for implementing a function of the WUS, for example, information for assisting a terminal device to receive data in a DRX active time, such as a bandwidth part (BWP) Identifier (ID) or a non-periodic Channel State Information (CSI) trigger, and the like. Alternatively, the first DCI may be used to implement the function of the GTS. It should be understood that the first DCI is a GTS, or the first DCI includes some other information besides information for implementing a function of the GTS, for example, the length of the GTS duration may also be indicated, which is not limited in particular.

Wherein, if the first DCI is used to implement the function of the WUS, the first time period may refer to an on duration period of one or more DRX cycles or an active time of one or more DRX cycles. For example, the first time period may refer to an on duration period of a next DRX cycle after the detected first DCI, or to an active time of a next DRX cycle after the detected first DCI, or to an on duration period of a plurality of DRX cycles next after the detected first DCI, or to an active time of a plurality of DRX cycles next after the detected first DCI.

Or, if the first DCI is used to implement the GTS function, the first time period may refer to a GTS duration corresponding to the detected first DCI, and the terminal device stops detecting the PDCCH in the corresponding GTS duration.

In this embodiment of the present application, the first DCI may be specific to the terminal device, that is, the first DCI is UE specific DCI, and one first DCI only needs to indicate whether one terminal device detects a PDCCH in a first time period, and if it needs to indicate whether different terminal devices detect the PDCCH in corresponding time periods, the network device needs to send different first DCI.

Alternatively, in view of reducing the consumption of network resources, the first DCI may also be designed as DCI for a UE Group (UE Group), and then the PDCCH carrying the first DCI may be referred to as a UE Group PDCCH (UE Group PDCCH, and the network device may configure a Group of terminal devices to detect the same first DCI.

For example, the first DCI includes 5 information bits, and the 5 information bits correspond to 5 terminal devices one to one. And if the value of some information bits is '1', indicating the terminal equipment corresponding to the information bits to detect the PDCCH in the first time period, and if the value of some information bits is '0', indicating the terminal equipment corresponding to the information bits not to detect the PDCCH in the first time period. Or, the first DCI includes 20 bits, where 4 information bits of the 20 information bits correspond to one terminal device, and similarly, a value of the information bit indicates whether the corresponding terminal device detects the PDCCH in the first time period, but the 4 information bits may also indicate some other information, for example, a BWP ID. Specifically, a terminal device corresponds to how many information bits in the first DCI, which is not limited in this embodiment of the present invention.

Whether the first DCI is a DCI of a UE specific or a DCI of a UE group, for example, the first DCI may be configured by a network device or defined by a protocol, and the like.

Regarding the detection result of the first DCI, different contents may be indicated, which is described below.

As an alternative, the detection result of the first DCI is described by taking the first DCI for implementing the function of the WUS and the first DCI is a DCI of the UE group as an example.

For example, if the network device does not transmit the first DCI, the content indicated by the event that the first DCI is not transmitted may include one or any of the following: indicating a group of terminal devices to have no PDCCH sent in the first time period, or indicating a group of terminal devices to enter a sleep state, or indicating a group of terminal devices not to detect the PDCCH in the first time period, or indicating a group of terminal devices not to start an on duration timer (at this time, the first time period includes an on duration time period of a next DRX cycle).

Or, if the network device transmits the first DCI, for example, the first DCI includes a plurality of information bits corresponding to a group of terminal devices, then, for a terminal device, the content indicated by the information bits corresponding to the terminal device in the first DCI may include one or any of the following: indicating that the terminal device does not send a PDCCH in the first time period, or indicating that the terminal device enters a sleep state, or indicating that the terminal device does not detect a PDCCH in the first time period, or indicating that the terminal device does not start an on duration timer (at this time, the first time period includes an on duration time period of a next DRX cycle), or indicating that the terminal device sends a PDCCH in the first time period, or indicating that the terminal device does not enter a sleep state, or indicating that the terminal device detects a PDCCH in the first time period, or indicating that the terminal device starts an on duration timer (at this time, the first time period includes an on duration time period of a next DRX cycle).

For example, the information bits included in the first DCI correspond to the terminal devices one to one. Then, if the value of the information bit corresponding to one terminal device is "0", it indicates that the terminal device does not send a PDCCH in the first time period, or indicates that the terminal device enters a sleep state, or indicates that the terminal device does not detect a PDCCH in the first time period, or indicates that the terminal device does not turn on an on duration timer (at this time, the first time period includes an on duration time period of the next DRX cycle). Or, if the value of the information bit corresponding to one terminal device is "1", the terminal device is indicated to have a PDCCH for transmission in the first time period, or the terminal device is indicated not to enter a sleep state, or the terminal device is indicated to detect the PDCCH in the first time period, or the terminal device is indicated to turn on an on duration timer (at this time, the first time period includes an on duration time period of the next DRX cycle). Of course, the values of "0" and "1" may be reversed, and are given by way of illustration and not limitation.

Alternatively, if the network device transmits the first DCI, the content indicated by the event that the first DCI is transmitted may include one or any of the following: indicating a group of terminal devices to have a PDCCH for transmission in a first time period, or indicating a group of terminal devices not to enter a sleep state, or indicating a group of terminal devices to detect a PDCCH in the first time period, or indicating a group of terminal devices to start an on duration timer (at this time, the first time period includes an on duration time period of a next DRX cycle).

As another optional way, the detection result of the first DCI is described by taking the first DCI for implementing the function of the GTS and the first DCI is a DCI of the UE group as an example.

For example, if the network device does not transmit the first DCI, the content indicated by the event that the first DCI is not transmitted may include one or any of the following: and indicating a group of terminal equipment to send the PDCCH in the first time period, or indicating the group of terminal equipment not to enter a sleep state, or indicating the group of terminal equipment to detect the PDCCH in the first time period.

Or, if the network device transmits the first DCI, for example, the first DCI includes a plurality of information bits corresponding to a group of terminal devices, then, for a terminal device, the content indicated by the information bits corresponding to the terminal device in the first DCI may include one or any of the following: indicating that the terminal device does not send the PDCCH in the first time period, or indicating that the terminal device enters a sleep state, or indicating that the terminal device does not detect the PDCCH in the first time period, or indicating that the terminal device sends the PDCCH in the first time period, or indicating that the terminal device does not enter the sleep state, or indicating that the terminal device detects the PDCCH in the first time period.

For example, the information bits included in the first DCI correspond to the terminal devices one to one. Then, if the value of the information bit corresponding to one terminal device is "1", it is indicated that the terminal device does not send the PDCCH in the first time period, or the terminal device is indicated to enter a sleep state, or the terminal device is indicated to not detect the PDCCH in the first time period. Or, if the value of the information bit corresponding to one terminal device is "0", the terminal device is indicated to have a PDCCH for transmission in the first time period, or the terminal device is indicated not to enter a sleep state, or the terminal device is indicated to detect the PDCCH in the first time period.

Or, if the network device transmits the first DCI, the content indicated by the event that the first DCI is transmitted may include one or any of the following: and indicating that a group of terminal devices do not send the PDCCH in the first time period, or indicating that the group of terminal devices enter a sleep state, or indicating that the group of terminal devices do not detect the PDCCH in the first time period.

S112, the terminal device determines that the size of the first DCI is a first value, where the first value is determined according to the size of the first type DCI, the first type DCI is DCI which can be detected by the terminal device within an inactive time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period.

For example, the terminal device may determine the size of the first DCI as the first value according to the protocol, or the terminal device may determine the size of the first DCI as the first value according to the configuration of the network device, or the terminal device may determine the size of the first DCI as the first value according to the size of the first type DCI, or the terminal device may determine the size of the first type DCI as the first value according to the bandwidth of CORESET 0 and the number of bits of some related information fields predefined by the protocol, and then determine the size of the first DCI as the first value.

If the first DCI is the DCI of UE specific, the terminal equipment is the terminal equipment corresponding to the first DCI; or, if the first DCI is DCI of a UE group, the terminal device may be any one terminal device in a group of terminal devices corresponding to the first DCI. Since the operation manner of the group of terminal devices corresponding to the first DCI is similar, only one of the terminal devices is described here as an example.

Based on the detection result of the first DCI, the terminal device may determine different contents, which is described below.

As an alternative, the detection result of the first DCI is described by taking the first DCI for implementing the function of the WUS and the first DCI is a DCI of a UE group as an example.

For example, if the network device does not transmit the first DCI, the terminal device does not detect the first DCI, and the content indicated by the event that the first DCI is not detected may include one or any of the following: indicating a group of terminal devices to not send a PDCCH in a first time period, or indicating a group of terminal devices to enter a sleep state, or indicating a group of terminal devices not to detect a PDCCH in the first time period, or indicating a group of terminal devices not to turn on an on duration timer (at this time, the first time period includes an on duration time period of a next DRX cycle). The terminal device may determine, according to an event that the first DCI is not detected, that there is no PDCCH sent in the first time period, or the terminal device enters a sleep state, or the terminal device does not detect the PDCCH in the first time period, or the terminal device does not turn on an on duration timer (at this time, the first time period includes an on duration time period of a next DRX cycle).

Alternatively, if the network device transmits the first DCI, for example, the first DCI includes a plurality of information bits corresponding to a group of terminal devices, the content indicated by the information bits corresponding to the terminal devices in the first DCI may include one or any of the following: indicating that the terminal device does not send a PDCCH in the first time period, or indicating that the terminal device enters a sleep state, or indicating that the terminal device does not detect a PDCCH in the first time period, or indicating that the terminal device does not start an on duration timer (at this time, the first time period includes an on duration time period of a next DRX cycle), or indicating that the terminal device sends a PDCCH in the first time period, or indicating that the terminal device does not enter a sleep state, or indicating that the terminal device detects a PDCCH in the first time period, or indicating that the terminal device starts an on duration timer (at this time, the first time period includes an on duration time period of a next DRX cycle). After receiving the first DCI, the terminal device may determine at least one information bit included in the first DCI and corresponding to the terminal device, so as to determine the indicated content according to a value of the information bit.

For example, the information bits included in the first DCI correspond to the terminal devices one to one. Then, if the terminal device determines that the value of the information bit corresponding to the terminal device is "0", it may be determined that no PDCCH is transmitted in the first time period, or it is determined that the terminal device enters a sleep state, or it is determined that the PDCCH is not detected in the first time period, or it is determined that the on duration timer is not turned on (in this case, the first time period includes an on duration period of the next DRX cycle). Or, if the terminal device determines that the value of the information bit corresponding to the terminal device is "1", it is determined that a PDCCH is transmitted in the first time period, or it is determined that the terminal device does not enter a sleep state, or it is determined that the PDCCH is detected in the first time period, or it is determined that an on duration timer is started (at this time, the first time period includes an on duration time period of the next DRX cycle).

Or, if the network device transmits the first DCI, the terminal device can detect the first DCI, and the content indicated by the event that the terminal device detects the first DCI may include one or any of the following: indicating a group of terminal devices to have a PDCCH for transmission in a first time period, or indicating a group of terminal devices not to enter a sleep state, or indicating a group of terminal devices to detect a PDCCH in the first time period, or indicating a group of terminal devices to start an on duration timer (at this time, the first time period includes an on duration time period of a next DRX cycle). The terminal device may determine, according to the event that the first DCI is detected, that a PDCCH is sent in the first time period, or the terminal device does not enter a sleep state, or the terminal device detects the PDCCH in the first time period, or the terminal device starts an on duration timer (at this time, the first time period includes an on duration time period of a next DRX cycle).

If the terminal device determines that a PDCCH is transmitted in the first time period according to the first DCI, or does not enter the sleep state, or detects the PDCCH in the first time period, or starts an on duration timer, the terminal device may not enter the sleep state in the first time period. For example, the first time period may belong to an active time of the terminal device, and the terminal device may detect the PDCCH during the first time period. For example, the first period is the on duration period of the next DRX cycle, the terminal device may start a DRX-on duration timer at the beginning of the on duration period of the next DRX cycle.

Or, if the terminal device determines, according to the first DCI, that no PDCCH is transmitted in the first time period, or determines to enter the sleep state, or determines not to detect the PDCCH in the first time period, or determines not to turn on the on duration timer, the terminal device may enter the sleep state in the first time period without detecting the PDCCH.

For example, if the network device does not transmit the first DCI, the terminal device may not detect the first DCI, and the content indicated by the event that the first DCI is not detected may include one or any of the following: and indicating a group of terminal equipment to send the PDCCH in the first time period, or indicating the group of terminal equipment not to enter a sleep state, or indicating the group of terminal equipment to detect the PDCCH in the first time period. The terminal device may determine, according to the event that the first DCI is detected, that there is a PDCCH transmitted in the first time period, or that the terminal device does not enter a sleep state, or that the terminal device detects the PDCCH in the first time period.

Alternatively, if the network device transmits the first DCI, for example, the first DCI includes a plurality of information bits corresponding to a group of terminal devices, the content indicated by the information bits corresponding to the terminal devices in the first DCI may include one or any of the following: indicating that the terminal device does not send the PDCCH in the first time period, or indicating that the terminal device enters a sleep state, or indicating that the terminal device does not detect the PDCCH in the first time period, or indicating that the terminal device sends the PDCCH in the first time period, or indicating that the terminal device does not enter the sleep state, or indicating that the terminal device detects the PDCCH in the first time period. After receiving the first DCI, the terminal device may determine at least one information bit included in the first DCI and corresponding to the terminal device, so as to determine the indicated content according to a value of the information bit.

For example, the information bits included in the first DCI correspond to the terminal devices one to one. Then, if the terminal device determines that the value of the information bit corresponding to the terminal device is "1", it may be determined that no PDCCH is transmitted in the first time period, or it is determined that a sleep state is entered, or it is determined that the PDCCH is not detected in the first time period. Or, if the terminal device determines that the value of the information bit corresponding to the terminal device is "0", it is determined that a PDCCH is transmitted in the first time period, or it is determined that the terminal device does not enter a sleep state, or it is determined that the PDCCH is detected in the first time period.

Or, if the network device sends the first DCI, the terminal device is able to detect the first DCI, and the content indicated by the event that the terminal device detects the first DCI may include one or any of the following: and indicating that a group of terminal devices do not send the PDCCH in the first time period, or indicating that the group of terminal devices enter a sleep state, or indicating that the group of terminal devices do not detect the PDCCH in the first time period. The terminal device may determine, according to an event that the first DCI is not detected, that no PDCCH is transmitted in the first time period, or enter a sleep state, or that the PDCCH is not detected in the first time period.

If the terminal device determines that a PDCCH is transmitted in the first time period according to the first DCI, or does not enter the sleep state, or detects the PDCCH in the first time period, the terminal device may not enter the sleep state in the first time period. For example, the first time period may belong to an active time of the terminal device, and the terminal device may detect the PDCCH during the first time period.

Or, if the terminal device determines that no PDCCH is transmitted in the first time period according to the first DCI, or determines to enter the sleep state, or determines not to detect the PDCCH in the first time period, the terminal device may enter the sleep state in the first time period without detecting the PDCCH.

In S111 and S112, the order between these two steps may be arbitrary. For example, S112 is performed before S111, or S112 is performed after S111, or S112 and S111 are performed simultaneously.

S113, the network device sends the first DCI with the first value, and the terminal device detects the first DCI according to the first value.

Where S112 and the network device transmit the first DCI, the order between the two steps may be arbitrary. For example, S112 is performed before the step of the network device transmitting the first DCI, or S112 is performed after the step of the network device transmitting the first DCI, or S112 and the step of the network device transmitting the first DCI are performed simultaneously.

After determining that the size of the first DCI is the first value, the terminal device may detect the first DCI with the size of the first value to correctly obtain the first DCI, so as to determine whether to detect the PDCCH in the first time period according to a detection result of the first DCI. As to how the terminal device determines whether the PDCCH needs to be detected in the first period of time according to the detection result of the first DCI, reference may be made to the description in S112.

In the embodiment of the present application, to detect the first DCI, the terminal device needs to perform detection in the search space set. Therefore, a first search space set may be configured for the first DCI, and the candidate downlink control channel resources of the first search space set are used for transmitting the first DCI, which may be understood as a dedicated search space set dedicated for transmitting the first DCI. Since the first DCI needs to implement the function of the WUS, the transmission cycle of the first DCI needs to be matched with the DRX cycle, and thus it is not suitable to configure the search space set of the first DCI as the common search space set or other search space sets. In the embodiment of the present application, therefore, the first search space set is made a dedicated search space set dedicated to transmission of the first DCI. The network device may transmit on the candidate control channel resources of the first set of search spaces when transmitting the first DCI.

In addition, the terminal device is to detect the first type DCI, as well as detect in the corresponding set of search spaces. The candidate downlink control channel resources of the second search space set may be used to transmit the first-type DCI, and optionally, the second search space set is a common search space set corresponding to the first-type DCI. For example, the second set of search spaces may include one or any combination of the following: a type 0PDCCH common search space set, a type0A PDCCH common search space set, a type 1PDCCH common search space set, or a type 2PDCCH common search space set. For example, the second set of search spaces includes a type 0PDCCH common search space set, a type0A PDCCH common search space set, a type 1PDCCH common search space set, and a type 2PDCCH common search space set, or the second set of search spaces includes only a type 0PDCCH common search space set, or the second set of search spaces includes a type0A PDCCH common search space set and a type 1PDCCH common search space set, or the second set of search spaces includes a type 0PDCCH common search space set, a type 1PDCCH common search space set, and a type 2PDCCH common search space set, and so on.

For example, which common search space sets are specifically included in the second set of search spaces may be related to the DCI included in the first type of DCI. For example, if the first type DCI includes DCI scrambled CRC via SI-RNTI, the second search space set may include a type0A PDCCH common search space set or a type 0PDCCH common search space set, or a type0A PDCCH common search space set and a type 0PDCCH common search space set; or, the first type DCI includes DCI in which CRC is scrambled by RA-RNTI, and the second search space set may include a type 1PDCCH common search space set; or, the first type DCI includes DCI in which CRC is scrambled by TC-RNTI, and the second search space set may include a type 1PDCCH common search space set; alternatively, the first type DCI includes DCI with CRC scrambled by P-RNTI, and the second search space set may include a type 2PDCCH common search space set.

In the embodiment of the present application, an association relationship may also be established between the first search space set and the second search space set. The association relationship means that when the terminal device detects the first search space set and the second search space set at the same detection time, the terminal device may detect the first DCI on the candidate downlink control channel resource of the first search space set and detect the first DCI on the candidate downlink control channel resource of the second search space set according to the first value. That is, after the association relationship is established, if the terminal device needs to detect the first search space set and the second search space set at the same time, the terminal device may detect the first DCI in both the first search space set and the second search space set, and for the terminal device, the detection opportunity for the first DCI is increased. Of course, the terminal device also detects the first type DCI in the second search space.

For example, the network device may configure the second search space set associated with the first search space set through high layer signaling, e.g., the configured second search space set associated with the first search space set is a type0A PDCCH common search space set, etc. The higher layer signaling is, for example, RRC signaling.

For the network device, when the network device transmits the first DCI and the first-type DCI at the same detection time, the network device may transmit the first DCI in the first search space set and/or the second search space set, and specifically, the network device may transmit the first DCI in the first search space set or the second search space set, or transmit the first DCI in both the first search space set and the second search space set (for example, transmit the first DCI corresponding to different terminal devices in different search spaces). For example, if the network device needs to transmit different first DCI for different terminal devices, the network device may place the different first DCI in different sets of search spaces to transmit. For example, the network device may transmit first DCI corresponding to a first terminal device in a first set of search spaces and first DCI corresponding to a second terminal device in a second set of search spaces, the first terminal device may detect the first set of search spaces and the second set of search spaces and may detect the first DCI corresponding to the first terminal device in the first set of search spaces, and the second terminal device may detect the first set of search spaces and the second set of search spaces and may detect the first DCI corresponding to the second terminal device in the second set of search spaces. Moreover, the second set of search spaces may include one or more common sets of search spaces, and if the second set of search spaces includes multiple common sets of search spaces, the network device may also transmit the first DCI corresponding to a different terminal device through a different common set of search spaces. By the method, the network equipment can correctly send the first DCI corresponding to different terminal equipment, the terminal equipment can also correctly detect the first DCI corresponding to the terminal equipment, the first DCI corresponding to different terminal equipment does not need to be placed in a search space set for sending, the collision probability among the first DCI is reduced, and the sending flexibility of the first DCI is improved.

Reference may be continued with fig. 9. For example, at time 2, the network device only needs to send the first DCI, and the terminal device only needs to detect the first DCI, so that the network device may send the first DCI only on the candidate control channel resources of the first search space set, and does not need to send the first DCI type on the candidate control channel resources of the second search space set, and the terminal device may only need to detect the first DCI on the candidate control channel resources of the first search space set, and does not need to detect the first DCI type on the candidate control channel resources of the second search space set; at time 3, the network device only needs to send the first-type DCI, and the terminal device only needs to detect the first-type DCI, so that the network device may send the first-type DCI only on the candidate control channel resources of the second search space set, and does not need to send the first DCI on the candidate control channel resources of the first search space set, and the terminal device may detect the first-type DCI only on the candidate control channel resources of the second search space set, and does not need to detect the first DCI on the candidate control channel resources of the first search space set; at time 1, the network device may send the first DCI on the candidate control channel resource of the first search space set or send the first-type DCI on the candidate control channel resource of the second search space set, and the terminal device needs to detect both the first search space set and the second search space set (or, the terminal device needs to detect both the first DCI and the first-type DCI, or the terminal device needs to detect both the candidate control channel resource of the first search space set and the candidate control channel resource of the second search space set).

That is, when the terminal device detects the first search space set and the second search space set at the same detection time, the terminal device may detect the first DCI at the candidate downlink control channel resources of the first search space set and detect the first DCI and the first type DCI at the candidate downlink control channel resources of the second search space set according to the first value. When the terminal device does not need to detect the first search space set and the second search space set at the same detection time, the terminal device only needs to detect the first DCI respectively, and does not need to detect the first DCI in both the candidate downlink control channel resources of the first search space set and the candidate downlink control channel resources of the second search space set.

In the embodiment of the present application, the size of the first DCI may be determined according to the size of the first type DCI, for example, the size of the first DCI may be equal to the size of the first type DCI, so that when the terminal device needs to detect the first DCI and the first type DCI simultaneously, only one size of DCI needs to be detected, which reduces the detection complexity of the terminal device and also saves the power consumption of the terminal device. In addition, when the terminal device needs to detect the first DCI and the first type DCI simultaneously, the terminal device may also detect the first DCI in the first search space set and the second search space set, so that a detection opportunity of the terminal device for the first DCI is increased, and for the network device, a candidate downlink control channel resource for transmitting the first DCI is also increased. In addition, by adopting the scheme that the first DCI can be sent in both the first search space set and the second search space set, the first DCI corresponding to different terminal devices can be sent in different search space sets, and the collision probability between the first DCI is reduced.

The embodiment shown in fig. 11 solves the problem of high detection complexity when the terminal device needs to simultaneously detect the PDCCH-based WUS and the DCI not affected by the DRX mechanism in the inactive time. In addition, a scenario is considered, when the terminal device is in the active time of the DRX cycle, GTS may be detected, and some DCI affected by the DRX mechanism may also be detected. The DCI affected by the DRX mechanism is DCI that the network device can transmit during the active time of the DRX cycle and the terminal device can detect during the active time of the DRX cycle, and during the inactive time of the DRX cycle, the network device generally does not transmit such DCI and the terminal device does not need to detect such DCI. Then, it is likely that also at a certain moment, the terminal device needs to detect GTS and DCI affected by DRX mechanism at the same time. In this case, it is obvious that the number of times the terminal device detects the DCI size is also increased, and the complexity and power consumption of the terminal device detecting the PDCCH-based GTS are increased.

Therefore, the embodiment of the present application further provides a second signal detection method, and with the method, when a terminal device needs to detect a GTS and a DCI affected by a DRX mechanism at the same time, the detection complexity of the terminal device may be reduced, and the power consumption of the terminal device may be reduced.

Please refer to fig. 12, which is a flowchart of the method. In the following description, the method is applied to the network architecture shown in fig. 10 as an example. In addition, the method may be performed by two communication apparatuses, for example, a third communication apparatus and a fourth communication apparatus, where the third communication apparatus may be a network device or a communication apparatus capable of supporting the network device to implement the functions required by the method, or the third communication apparatus may be a terminal device or a communication apparatus capable of supporting the terminal device to implement the functions required by the method, and of course, other communication apparatuses such as a system on chip may also be used. The same applies to the fourth communication apparatus, which may be a network device or a communication apparatus capable of supporting the network device to implement the functions required by the method, or a terminal device or a communication apparatus capable of supporting the terminal device to implement the functions required by the method, and of course, may also be other communication apparatuses, such as a system on a chip. The third communication device may be a network device, the fourth communication device is a terminal device, or both the third communication device and the fourth communication device are network devices, or both the first communication device and the fourth communication device are terminal devices, or the third communication device is a network device, and the fourth communication device is a communication device capable of supporting the terminal device to implement the functions required by the method, and so on. The network device is, for example, a base station.

For convenience of introduction, in the following, the method is taken as an example executed by a network device and a terminal device, that is, the third communication device is a network device, and the fourth communication device is a terminal device. Since the present embodiment is applied to the network architecture shown in fig. 10 as an example, the network device described below may be a network device in the network architecture shown in fig. 10, and the terminal device described below may be a terminal device in the network architecture shown in fig. 10.

S121, the network device determines that the size of the first DCI is a first value, where the first value is determined according to the size of the second type DCI, the second type DCI is DCI which can be detected by the terminal device within an activation time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect the downlink control channel within a first time period.

The first DCI may implement a GTS signaling function, and a channel carrying the first DCI may be a PDCCH-based GTS, or referred to as a PDCCH-based power saving channel, or referred to as a PDCCH-based power saving signal.

The second type DCI is, for example, DCI affected by the DRX mechanism, for example, group common DCI (group common DCI), that is, the terminal device is affected by the DRX mechanism when detecting the first type DCI, and if the terminal device is in an active time of the DRX cycle, the second type DCI may be detected, and if the terminal device is in an inactive time of the DRX cycle, the second type DCI may not be detected.

Wherein the second type DCI may include one or any combination of the following: DCI in which CRC is scrambled by resource occupancy Indication (INT) INT-RNTI, DCI in which RNTI (slot format indicator, SFI) -scrambled CRC is indicated by slot format, DCI in which CRC is scrambled by Transmission Power Control (TPC) -Physical Uplink Shared Channel (PUSCH) -RNTI, DCI in which CRC is scrambled by TPC-Physical Uplink Control Channel (PUCCH) -RNTI, or DCI in which CRC is scrambled by TPC-SRS-RNTI. For example, the second type of DCI may include DCI scrambled with INT-RNTI and CRC, or DCI scrambled with SFI-RNTI and CRC scrambled with TPC-PUCSH-RNTI, DCI scrambled with TPC-PUCCH-RNTI and DCI scrambled with TPC-SRS-RNTI, which are not limited in detail. In addition, in addition to several DCIs listed here, if there are other DCIs that are also affected by the DRX mechanism, these DCIs may also be included within the second type DCI.

Regarding the size of the first DCI, it may be determined according to the size of the second-type DCI. For example, the size of the first DCI is made equal to the size of the second-type DCI. If the sizes of the DCIs included in the second type DCI are the same, the size of the first DCI may be equal to the size of the DCI included in the second type DCI; or, if the sizes of the DCIs included in the second type of DCI are different, the size of the first DCI may also be equal to the size of one of the DCIs included in the second type of DCI. Both cases can be considered as the size of the first DCI is the same as the size of the second type DCI. Under the condition that the size of the first DCI is the same as that of the second DCI, if the terminal equipment needs to detect the first DCI and the second DCI simultaneously, the terminal equipment only needs to detect the DCI with one size, and does not need to detect the DCIs with multiple sizes, so that the complexity of detection of the terminal equipment is reduced, and the power consumption of the terminal equipment is also saved.

The size of the first DCI may be protocol-specified, or configured by a network device, or the like.

The detection result of the first DCI is used to indicate whether to detect the downlink control channel in the first time period. If the first DCI is used to implement a GTS function, the first time period may refer to a GTS duration corresponding to the detected first DCI.

In this embodiment, the first DCI may be a DCI of UE specific, or may also be a DCI of a UE group, and reference may be made to the description of the embodiment shown in fig. 11 for this section.

In addition, regarding the detection result of the first DCI, different contents may be indicated. In this regard, reference may be made to the description of the detection result of the first DCI when the first DCI is used to implement the function of the GTS in S111 in the embodiment shown in fig. 11.

S122, the terminal device determines that the size of the first DCI is a first value, where the first value is determined according to the size of the second type DCI, the second type DCI is DCI which can be detected by the terminal device within an activation time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect the downlink control channel within a first time period.

For example, the terminal device may determine, according to a protocol, that the size of the first DCI is a first value, or the terminal device may determine, according to the configuration of the network device, that the size of the first DCI is a first value, or the terminal device may determine, according to the size of the second type DCI, that the size of the first DCI is a first value, which is not limited specifically.

According to the detection result of the first DCI, the terminal device may determine different contents. In this regard, reference may be made to the description of the detection result of the first DCI when the first DCI is used to implement the function of the GTS in S112 in the embodiment shown in fig. 11.

In S121 and S122, the order between these two steps may be arbitrary. For example, S122 is performed before S121, or S122 is performed after S121, or S122 and S121 are performed simultaneously.

S123, the network device sends the first DCI with the first value, and the terminal device detects the first DCI according to the first value.

Where S122 and the network device transmit the first DCI, the order between the two steps may be arbitrary. For example, S122 is performed before the step of the network device transmitting the first DCI, or S122 is performed after the step of the network device transmitting the first DCI, or S122 and the step of the network device transmitting the first DCI are performed simultaneously.

After determining that the size of the first DCI is the first value, the terminal device may detect the first DCI with the first value to correctly obtain the first DCI, so as to determine whether to detect the PDCCH in the first time period according to a detection result of the first DCI. As to how the terminal device determines whether or not the PDCCH needs to be detected in the first period of time according to the detection result of the first DCI, reference may be made to the description in S122.

In this embodiment of the present application, to detect the first DCI, the terminal device needs to perform detection in the search space set. Therefore, a first search space set may be configured for the first DCI, and reference may be made to the embodiment shown in fig. 11 for the description of the first search space set.

In addition, the terminal device is to detect the first type DCI, as well as detect in the corresponding set of search spaces. The candidate downlink control channel resources of the second search space set may be used to transmit the first-type DCI, and optionally, the second search space set is a common search space set corresponding to the first-type DCI. For example, the second search space set may include a type3PDCCH common search space set (type 3PDCCH CSSs set).

In the embodiment of the present application, an association relationship may also be established between the first search space set and the second search space set. The association relationship means that when the terminal device detects the first search space set and the second search space set at the same detection time, the terminal device may detect the first DCI in the candidate downlink control channel resource of the first search space set and detect the first DCI in the candidate downlink control channel resource of the second search space set according to the first value. That is, after the association relationship is established, if the terminal device needs to detect the first search space set and the second search space set at the same time, the terminal device may detect the first DCI in both the first search space set and the second search space set, and for the terminal device, the detection opportunity for the first DCI is increased. Of course, the terminal device also detects the first type DCI in the second search space.

For example, the network device may configure the second search space set associated with the first search space set through higher layer signaling, e.g., the configured second search space set associated with the first search space set is a type3PDCCH common search space set, etc. The higher layer signaling is, for example, RRC signaling.

For the network device, when the network device transmits the first DCI and the second type DCI at the same detection time, the network device may transmit the first DCI in the first search space set and/or the second search space set, and specifically, the network device may transmit the first DCI in the first search space set or the second search space set, or transmit the first DCI in both the first search space set and the second search space set (for example, transmit the first DCI corresponding to different terminal devices in different search spaces). For example, if the network device needs to transmit different first DCI for different terminal devices, the network device may place the different first DCI in different sets of search spaces to transmit. For example, the network device may transmit first DCI corresponding to a first terminal device in a first set of search spaces and first DCI corresponding to a second terminal device in a second set of search spaces, the first terminal device may detect the first set of search spaces and the second set of search spaces and may detect the first DCI corresponding to the first terminal device in the first set of search spaces, and the second terminal device may detect the first set of search spaces and the second set of search spaces and may detect the first DCI corresponding to the second terminal device in the second set of search spaces. By the method, the network equipment can correctly send the first DCI corresponding to different terminal equipment, the terminal equipment can also correctly detect the first DCI corresponding to the terminal equipment, the first DCI corresponding to different terminal equipment does not need to be placed in a search space set for sending, the collision probability among the first DCI is reduced, and the sending flexibility of the first DCI is improved.

For the terminal device, when the terminal device detects the first search space set and the second search space set at the same detection time, the terminal device may detect, according to the first value, the first DCI in the candidate downlink control channel resources of the first search space set, and detect the first DCI and the second type DCI in the candidate downlink control channel resources of the second search space set. When the terminal device does not need to detect the first search space set and the second search space set at the same detection time, the terminal device only needs to detect the first DCI respectively, and the first DCI does not need to be detected in both the candidate downlink control channel resources of the first search space set and the candidate downlink control channel resources of the second search space set.

In this embodiment of the present application, the size of the first DCI may be determined according to the size of the second type DCI, for example, the size of the first DCI may be equal to the size of the second type DCI, so that when the terminal device needs to detect the first DCI and the second type DCI simultaneously, only one size of DCI needs to be detected, which reduces the detection complexity of the terminal device and also saves the power consumption of the terminal device. In addition, when the terminal device needs to detect the first DCI and the second type DCI at the same time, the terminal device may also detect the first DCI in the first search space set and the second search space set, which increases the detection opportunity of the terminal device for the first DCI, and for the network device, also increases the candidate downlink control channel resources for transmitting the first DCI. In addition, through the scheme that the first DCI can be sent in both the first search space set and the second search space set, the first DCI corresponding to different terminal devices can also be sent in different search space sets, and the collision probability among the first DCI is reduced.

The following describes an apparatus for implementing the above method in the embodiment of the present application with reference to the drawings. Therefore, the above contents can be used in the subsequent embodiments, and the repeated contents are not repeated.

The embodiment of the application provides a first communication device, for example, a first communication device. Referring to fig. 13, the communication device is, for example, the communication device 1300. The communication apparatus 1300 may implement the functions of the terminal device mentioned above. Exemplarily, the communication apparatus 1300 may be a communication device, or the communication apparatus 1300 may also be a chip disposed in the communication device. Illustratively, the communication device is a terminal device as described above. The communication device 1300 may include a processor 1301 and a transceiver 1302. Processor 1301 may be configured to perform all operations performed by the terminal device in the embodiment shown in fig. 11 except transceiving operations, for example, may perform S112 in the embodiment shown in fig. 11, and/or other processes for supporting the techniques described herein. The transceiver 1302 may be configured to perform all transceiving operations performed by the terminal device in the embodiment shown in fig. 11, such as to perform S113 in the embodiment shown in fig. 11, and/or other processes for supporting the techniques described herein.

For example, the processor 1301 is configured to determine a size of a first DCI to be a first value, where the first value is determined according to the size of the first type DCI, the first type DCI is DCI which can be detected by a terminal device within an inactive time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period;

a transceiver 1302, configured to detect the first DCI according to the first value.

In one possible embodiment, the first value is a size of the first type of DCI.

In one possible embodiment, the transceiver 1302 is configured to detect the first DCI according to the first value by:

when the communications apparatus 1300 detects the first search space set and the second search space set at the same detection time, according to the first value, the first DCI is detected on the candidate downlink control channel resources of the first search space set and the candidate downlink control channel resources of the second search space set, where the candidate downlink control channel resources of the first search space set are used for transmitting the first DCI, and the candidate downlink control channel resources of the second search space set are used for transmitting the first DCI type.

In one possible embodiment, the first type DCI includes one or any combination of the following:

scrambling DCI of CRC through SI-RNTI;

scrambling DCI of CRC through RA-RNTI;

scrambling DCI of CRC through TC-RNTI; or the like, or, alternatively,

DCI of CRC is scrambled by P-RNTI.

In one possible embodiment, the second set of search spaces comprises one or any combination of the following:

a type 0PDCCH common search space set;

a type0A PDCCH common search space set;

a type 1PDCCH common search space set; or the like, or, alternatively,

type 2PDCCH common search space set.

All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

Embodiments of the present application provide a second communication device, which is, for example, a second communication device. Referring to fig. 14, the communication device is, for example, a communication device 1400. The communication apparatus 1400 may implement the functionality of the network device referred to above. Exemplarily, the communication apparatus 1400 may be a communication device, or the communication apparatus 1400 may also be a chip disposed in the communication device. Illustratively, the communication device is a network device as described above. The communications device 1400 may include a processor 1401 and a transceiver 1402. Processor 1401 may be configured to perform all operations performed by the network device in the embodiment shown in fig. 11 except transceiving operations, such as performing S111 in the embodiment shown in fig. 11, and/or other processes for supporting the techniques described herein. The transceiver 1402 may be used to perform all transceiving operations performed by a network device in the embodiment illustrated in fig. 11, e.g., may perform S113 in the embodiment illustrated in fig. 11, and/or other processes to support the techniques described herein.

For example, the processor 1401 is configured to determine a size of a first DCI, where the first value is determined according to a size of a first type DCI, where the first type DCI is a DCI that a terminal device can detect in an inactive time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel in a first time period;

a transceiver 1402 for transmitting the first DCI of the first value.

In one possible embodiment, the first value is a size of the first type of DCI.

In one possible embodiment, the transceiver 1402 is configured to transmit the first DCI for the first value by:

when the communication apparatus 1400 sends the first DCI and the first type DCI at the same detection opportunity, the first DCI of the first value is sent in a candidate downlink control channel resource of a first search space set and/or a candidate downlink control channel resource of a second search space set, where the candidate downlink control channel resource of the first search space set is used for transmitting the first DCI, and the candidate downlink control channel resource of the second search space set is used for transmitting the first type DCI.

scrambling DCI of CRC through SI-RNTI;

scrambling DCI of CRC through RA-RNTI;

scrambling DCI of CRC through TC-RNTI; or the like, or, alternatively,

DCI of CRC is scrambled by P-RNTI.

In a possible embodiment, the second set of search spaces comprises one or any combination of the following:

a type 0PDCCH common search space set;

a type0A PDCCH common search space set;

type 1PDCCH common search space set; or the like, or, alternatively,

type 2PDCCH common search space set.

The embodiment of the present application provides a third communication device, for example, a first communication device. Referring to fig. 15, the communication device is, for example, a communication device 1500. The communication apparatus 1500 may implement the functions of the terminal device referred to above. The communication apparatus 1500 may be a communication device, or the communication apparatus 1500 may be a chip provided in the communication device. Illustratively, the communication device is a terminal device as described above. The communications apparatus 1500 can include a processor 1501 and a transceiver 1502. Processor 1501 may be configured to perform all operations performed by the terminal device in the embodiment shown in fig. 12, except for transceiving operations, such as may perform S122 in the embodiment shown in fig. 12, and/or other processes for supporting the techniques described herein. The transceiver 1502 may be configured to perform all transceiving operations performed by the terminal device in the embodiment illustrated in fig. 12, such as to perform S123 in the embodiment illustrated in fig. 12, and/or other processes to support the techniques described herein.

For example, the processor 1501 is configured to determine a size of first DCI, where the first value is determined according to a size of second type DCI, where the first type DCI is DCI that a terminal device can detect within an active time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period;

a transceiver 1502 configured to detect the first DCI according to the first value.

In one possible embodiment, the first value is a size of the second type DCI.

In one possible embodiment, the transceiver 1502 is configured to detect the first DCI according to the first value by:

when the communications apparatus 1500 detects the first search space set and the second search space set at the same detection time, according to the first value, the first DCI is detected on the candidate downlink control channel resources of the first search space set and the candidate downlink control channel resources of the second search space set, where the candidate downlink control channel resources of the first search space set are used for transmitting the first DCI, and the candidate downlink control channel resources of the second search space set are used for transmitting the second DCI.

In one possible embodiment, the second type DCI includes one or any combination of the following:

scrambling DCI of CRC by INT-RNTI;

scrambling DCI of CRC through SFI-RNTI;

scrambling DCI of CRC through TPC-PUCCH-RNTI;

scrambling DCI of CRC through TPC-PUCCH-RNTI; or the like, or a combination thereof,

and scrambling DCI of the CRC through TPC-SRS-RNTI.

In one possible embodiment, the second search space set is a type3PDCCH common search space set.

The embodiment of the present application provides a fourth communication device, which is, for example, a fourth communication device. Referring to fig. 16, the communication device is, for example, a communication device 1600. The communication apparatus 1600 may implement the functionality of the network devices referred to above. The communication apparatus 1600 may be a communication device, or the communication apparatus 1600 may be a chip disposed in the communication device. Illustratively, the communication device is a network device as described above. The communication device 1600 may include a processor 1601 and a transceiver 1602. Among other things, the processor 1601 may be configured to perform all operations performed by the network device in the embodiment shown in fig. 12 except transceiving operations, e.g., may perform S121 in the embodiment shown in fig. 12, and/or other processes for supporting the techniques described herein. The transceiver 1602 may be used to perform all transceiving operations performed by a network device in the embodiment illustrated in fig. 12, e.g., may perform S123 in the embodiment illustrated in fig. 12, and/or other processes to support the techniques described herein.

For example, the processor 1601 is configured to determine a size of a first DCI to be a first value, where the first value is determined according to a size of a second type DCI, where the second type DCI is a DCI that can be detected by a terminal device within an active time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period;

a transceiver 1602 configured to transmit the first DCI of the first value.

In one possible embodiment, the first value is a size of the second type of DCI.

In one possible embodiment, the transceiver 1602 is configured to transmit the first DCI of the first value by:

when the communication apparatus 1600 sends the first DCI and the first-type DCI at the same detection opportunity, send the first DCI of the first value in a candidate downlink control channel resource of a first search space set and/or a candidate downlink control channel resource of a second search space set, where the candidate downlink control channel resource of the first search space set is used for transmitting the first DCI, and the candidate downlink control channel resource of the second search space set is used for transmitting the second-type DCI.

scrambling DCI of CRC by INT-RNTI;

scrambling DCI of CRC through SFI-RNTI;

scrambling DCI of CRC through TPC-PUCCH-RNTI;

scrambling DCI of CRC through TPC-PUCCH-RNTI; or the like, or, alternatively,

and scrambling DCI of the CRC through TPC-SRS-RNTI.

In a simple embodiment, one skilled in the art can also realize the communication apparatus 1300, the communication apparatus 1400, the communication apparatus 1500, or the communication apparatus 1600 as described above by the structure of the communication apparatus 1700 as shown in fig. 17A. The communication apparatus 1700 may implement the functions of the terminal device or the network device referred to above. The communication device 1700 may include a processor 1701.

Where the communications apparatus 1700 is configured to implement the functions of the terminal device as described above, the processor 1701 may be configured to perform all operations performed by the terminal device in the embodiment shown in fig. 11 except for transceiving operations, for example, to perform S112 in the embodiment shown in fig. 11, and/or other processes for supporting the techniques described herein; alternatively, where the communications apparatus 1700 is configured to implement the functionality of the network devices referred to above, the processor 1701 may be configured to perform all operations performed by the network device in the embodiment shown in fig. 11 except transceiving operations, e.g., may perform S113 in the embodiment shown in fig. 11, and/or other processes for supporting the techniques described herein. Alternatively, when the communications apparatus 1700 is used to implement the functions of the terminal device referred to above, the processor 1701 may be configured to perform all operations performed by the terminal device in the embodiment shown in fig. 12 except for transceiving operations, for example, to perform S122 in the embodiment shown in fig. 12, and/or other processes for supporting the techniques described herein; alternatively, where the communications apparatus 1700 is configured to implement the functionality of the network devices referred to above, the processor 1701 may be configured to perform all operations performed by the network device in the embodiment shown in fig. 12 except transceiving operations, e.g., may perform S123 in the embodiment shown in fig. 12, and/or other processes for supporting the techniques described herein.

The communication apparatus 1700 may be implemented by a field-programmable gate array (FPGA), an application-specific integrated circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Micro Controller Unit (MCU), or a programmable controller (PLD) or other integrated chips, and the communication apparatus 1700 may be disposed in the terminal device or the network device according to the embodiment of the present application, so that the terminal device or the network device implements the method according to the embodiment of the present application.

In an alternative implementation, the communication apparatus 1700 may include a transceiving component for communicating with other devices. Where the communications apparatus 1700 is used to implement the functions of the terminal device or the network device mentioned above, the transceiving component may be configured to perform all transceiving operations performed by the terminal device or the network device in the embodiment shown in fig. 11, for example, may perform S112 in the embodiment shown in fig. 11, and/or other processes for supporting the techniques described herein. Alternatively, when the communication apparatus 1700 is used to implement the functions of the terminal device or the network device mentioned above, the transceiving component may be configured to perform all transceiving operations performed by the terminal device or the network device in the embodiment shown in fig. 12, for example, may perform S122 in the embodiment shown in fig. 12, and/or may perform other processes for supporting the techniques described herein.

In an alternative implementation, the communications apparatus 1700 may further include a memory 1702, see fig. 17B, wherein the memory 1702 is configured to store computer programs or instructions and the processor 1701 is configured to decode and execute the computer programs or instructions. It will be appreciated that these computer programs or instructions may comprise the functional programs of the terminal devices or network devices described above. When the functional program of the terminal device is decoded and executed by the processor 1701, the terminal device can be enabled to realize the functions of the terminal device in the method provided by the embodiment shown in fig. 11 or the embodiment shown in fig. 12 in the present application. When the functional program of the network device is decoded and executed by the processor 1701, the network device can be enabled to implement the functions of the network device in the method provided by the embodiment shown in fig. 11 or the embodiment shown in fig. 12 in the present application.

In an alternative implementation, the functional programs of these terminal devices or network devices are stored in a memory external to communications apparatus 1700. When the terminal device function program is decoded and executed by the processor 1701, part or all of the contents of the terminal device function program is temporarily stored in the memory 1702. When the functional program of the network device is decoded and executed by the processor 1701, a part or all of the content of the functional program of the network device is temporarily stored in the memory 1702.

In an alternative implementation, the functional programs of these terminal devices or network devices are provided in the memory 1702 stored inside the communication apparatus 1700. When the memory 1702 inside the communication apparatus 1700 stores the function program of the terminal device, the communication apparatus 1700 may be provided in the terminal device of the embodiment of the present application. When the memory 1702 inside the communication apparatus 1700 stores a function program of a network device, the communication apparatus 1700 may be provided in the network device according to the embodiment of the present application.

In yet another alternative implementation, part of the contents of the functional programs of these terminal devices are stored in a memory external to the communication apparatus 1700, and the other part of the contents of the functional programs of these terminal devices are stored in a memory 1702 internal to the communication apparatus 1700. Alternatively, part of the contents of the function programs of these network devices are stored in a memory external to the communication apparatus 1700, and the other part of the contents of the function programs of these network devices are stored in the memory 1702 internal to the communication apparatus 1700.

In the embodiment of the present application, the communication apparatus 1300, the communication apparatus 1400, the communication apparatus 1500, the communication apparatus 1600, and the communication apparatus 1700 are presented in a form in which each function is divided into respective functional modules, or may be presented in a form in which each functional module is divided in an integrated manner. As used herein, a "module" may refer to an ASIC, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other components that provide the described functionality.

In addition, the first communication device as described above may also be implemented in other forms. The communication device comprises, for example, a processing module and a transceiver module. For example, the processing module may be implemented by the processor 1301 and the transceiver module may be implemented by the transceiver 1302. Wherein the processing module may be configured to perform all operations performed by the terminal device in the embodiment shown in fig. 11 except for the transceiving operation, for example, may perform S112 in the embodiment shown in fig. 11, and/or other processes for supporting the techniques described herein. The transceiving module may be configured to perform all transceiving operations performed by the terminal device in the embodiment shown in fig. 11, for example, may perform S113 in the embodiment shown in fig. 11, and/or other processes for supporting the techniques described herein.

For example, the processing module is configured to determine that a size of a first DCI is a first value, where the first value is determined according to the size of the first DCI, the first DCI is DCI which can be detected by a terminal device within an inactive time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period;

and the transceiver module is used for detecting the first DCI according to the first value.

In one possible embodiment, the first value is a size of the first type of DCI.

In one possible embodiment, the transceiver module is configured to detect the first DCI according to the first value by:

when the communication device detects a first search space set and a second search space set at the same detection opportunity, according to the first value, detecting the first DCI in candidate downlink control channel resources of the first search space set and candidate downlink control channel resources of the second search space set, where the candidate downlink control channel resources of the first search space set are used for transmitting the first DCI, and the candidate downlink control channel resources of the second search space set are used for transmitting the first DCI type.

scrambling DCI of CRC through SI-RNTI;

scrambling DCI of CRC through RA-RNTI;

scrambling DCI of CRC through TC-RNTI; or the like, or, alternatively,

DCI of CRC is scrambled by P-RNTI.

a type 0PDCCH common search space set;

a type0A PDCCH common search space set;

type 1PDCCH common search space set; or the like, or a combination thereof,

type 2PDCCH common search space set.

All relevant contents of the steps related to the method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

The second communication means as described above may also be implemented in other forms. The communication device comprises, for example, a processing module and a transceiver module. For example, the processing means may be embodied by the processor 1401 and the transceiver means may be embodied by the transceiver 1402. Among other things, the processing module may be configured to perform all operations performed by the network device in the embodiment shown in fig. 11 except for transceiving operations, e.g., may perform S111 in the embodiment shown in fig. 11, and/or other processes for supporting the techniques described herein. The transceiving module may be configured to perform all transceiving operations performed by the network device in the embodiment shown in fig. 11, e.g., may perform S113 in the embodiment shown in fig. 11, and/or other processes to support the techniques described herein.

For example, the processing module is configured to determine a size of a first DCI as a first value, where the first value is determined according to the size of the first DCI, the first DCI is DCI which can be detected by a terminal device within an inactive time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period;

a transceiver module, configured to transmit the first DCI of the first value.

In one possible embodiment, the first value is a size of the first type of DCI.

In one possible embodiment, the transceiver module is configured to transmit the first DCI of the first value by:

when the communication device sends the first DCI and the first-type DCI at the same detection opportunity, sending the first DCI of the first value in a candidate downlink control channel resource of a first search space set and/or a candidate downlink control channel resource of a second search space set, where the candidate downlink control channel resource of the first search space set is used for transmitting the first DCI, and the candidate downlink control channel resource of the second search space set is used for transmitting the first-type DCI.

In one possible embodiment, the first type of DCI includes one or any combination of:

scrambling DCI of CRC through SI-RNTI;

scrambling DCI of CRC through RA-RNTI;

scrambling DCI of CRC through TC-RNTI; or the like, or a combination thereof,

DCI of CRC is scrambled by P-RNTI.

a type 0PDCCH common search space set;

a type0A PDCCH common search space set;

type 1PDCCH common search space set; or the like, or, alternatively,

type 2PDCCH common search space set.

The third communication means as described above may also be implemented in other forms. The communication device comprises, for example, a processing module and a transceiver module. For example, the processing module may be implemented by the processor 1501 and the transceiver module may be implemented by the transceiver 1502. Wherein the processing module may be configured to perform all operations performed by the terminal device in the embodiment shown in fig. 12 except for transceiving operations, for example, may perform S122 in the embodiment shown in fig. 12, and/or other processes for supporting the techniques described herein. The transceiving module may be configured to perform all transceiving operations performed by the terminal device in the embodiment shown in fig. 12, e.g., may perform S123 in the embodiment shown in fig. 12, and/or other processes for supporting the techniques described herein.

For example, the processing module is configured to determine a size of a first DCI as a first value, where the first value is determined according to a size of a second type of DCI, the first type of DCI is DCI that can be detected by a terminal device within an active time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period;

In one possible embodiment, the first value is a size of the second type DCI.

when the communication device detects a first search space set and a second search space set at the same detection opportunity, according to the first value, the first DCI is detected on a candidate downlink control channel resource of the first search space set and a candidate downlink control channel resource of the second search space set, where the candidate downlink control channel resource of the first search space set is used for transmitting the first DCI, and the candidate downlink control channel resource of the second search space set is used for transmitting the second DCI.

scrambling DCI of CRC by INT-RNTI;

scrambling DCI of CRC through SFI-RNTI;

scrambling DCI of CRC through TPC-PUCCH-RNTI;

scrambling DCI of CRC through TPC-PUCCH-RNTI; or the like, or, alternatively,

and scrambling DCI of the CRC through TPC-SRS-RNTI.

The fourth communication means as described above may also be implemented in other forms. The communication device comprises, for example, a processing module and a transceiver module. For example, the processing module may be implemented by the processor 1601 and the transceiver module may be implemented by the transceiver 1602. Among other things, the processing module may be configured to perform all operations performed by the network device in the embodiment shown in fig. 12 except for transceiving operations, e.g., may perform S121 in the embodiment shown in fig. 12, and/or other processes for supporting the techniques described herein. The transceiver module may be used to perform all transceiving operations performed by the network device in the embodiment shown in fig. 12, e.g., may perform S123 in the embodiment shown in fig. 12, and/or other processes for supporting the techniques described herein.

For example, the processing module is configured to determine a size of a first DCI as a first value, where the first value is determined according to a size of a second type of DCI, where the second type of DCI is DCI that can be detected by a terminal device within an active time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period;

a transceiver module, configured to transmit the first DCI of the first value.

In one possible embodiment, the transceiver module is configured to transmit the first DCI for the first value by:

when the communication apparatus transmits the first DCI and the first type DCI at the same detection opportunity, the first DCI of the first value is transmitted in a candidate downlink control channel resource of a first search space set and/or a candidate downlink control channel resource of a second search space set, where the candidate downlink control channel resource of the first search space set is used for transmitting the first DCI, and the candidate downlink control channel resource of the second search space set is used for transmitting the second type DCI.

scrambling DCI of CRC through INT-RNTI;

scrambling DCI of CRC through SFI-RNTI;

scrambling DCI of CRC through TPC-PUCCH-RNTI;

scrambling DCI of CRC through TPC-PUCCH-RNTI; or the like, or, alternatively,

and scrambling DCI of the CRC through the TPC-SRS-RNTI.

Since the communication apparatus 1300, the communication apparatus 1400, the communication apparatus 1500, the communication apparatus 1600, or the communication apparatus 1700 provided in the embodiment of the present application can be used to execute the method provided in the embodiment shown in fig. 11 or the embodiment shown in fig. 12, the technical effect obtained by the method can refer to the above method embodiment, and is not described herein again.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Versatile Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

1. A method of signal detection, comprising:

determining the size of first DCI as a first value, wherein the first value is the size of first type DCI, the first type DCI is DCI which can be detected by terminal equipment within an inactive time under a C-DRX mechanism, and a detection result of the first DCI is used for indicating whether a downlink control channel is detected within a first time period;

detecting the first DCI according to the first value;

wherein detecting the first DCI according to the first value comprises:

when a first search space set and a second search space set are detected at the same detection opportunity, according to the first value, the first DCI is detected in candidate downlink control channel resources of the first search space set and candidate downlink control channel resources of the second search space set, wherein the candidate downlink control channel resources of the first search space set are used for transmitting the first DCI, and the candidate downlink control channel resources of the second search space set are used for transmitting the first DCI.

2. The method of claim 1, wherein the first type of DCI comprises one or any combination of the following:

scrambling DCI of CRC through SI-RNTI;

scrambling DCI of CRC through RA-RNTI;

scrambling DCI of CRC through TC-RNTI; or the like, or, alternatively,

DCI of CRC is scrambled by P-RNTI.

3. The method of claim 1 or 2, wherein the second set of search spaces comprises one of the following or any combination thereof:

a type 0PDCCH common search space set;

a type0A PDCCH common search space set;

type 1PDCCH common search space set; or the like, or, alternatively,

type 2PDCCH common search space set.

4. A method of signal detection, comprising:

transmitting the first DCI of the first value;

wherein transmitting the first DCI of the first value includes:

when the first DCI and the first-type DCI are transmitted at the same detection time, the first DCI of the first value is transmitted in a candidate downlink control channel resource of a first search space set and/or a candidate downlink control channel resource of a second search space set, where the candidate downlink control channel resource of the first search space set is used for transmitting the first DCI, and the candidate downlink control channel resource of the second search space set is used for transmitting the first-type DCI.

5. The method of claim 4, wherein the first type of DCI comprises one or any combination of the following:

scrambling DCI of CRC through SI-RNTI;

scrambling DCI of CRC through RA-RNTI;

scrambling DCI of CRC through TC-RNTI; or the like, or, alternatively,

DCI of CRC is scrambled by P-RNTI.

6. The method of claim 4 or 5, wherein the second set of search spaces comprises one of the following or any combination thereof:

a type 0PDCCH common search space set;

a type0A PDCCH common search space set;

type 1PDCCH common search space set; or the like, or, alternatively,

type 2PDCCH common search space set.

7. A communication device, comprising:

a processing module, configured to determine that a size of a first DCI is a first value, where the first value is a size of a first type DCI, the first type DCI is a DCI which can be detected by a terminal device within an inactive time under a C-DRX mechanism, and a detection result of the first DCI is used to indicate whether to detect a downlink control channel within a first time period;

a transceiver module, configured to detect the first DCI according to the first value;

wherein the transceiver module is configured to detect the first DCI according to the first value by:

when the communication device detects a first search space set and a second search space set at the same detection opportunity, according to the first value, the first DCI is detected on candidate downlink control channel resources of the first search space set and candidate downlink control channel resources of the second search space set, where the candidate downlink control channel resources of the first search space set are used for transmitting the first DCI, and the candidate downlink control channel resources of the second search space set are used for transmitting the first DCI.

8. The communications device of claim 7, wherein the first type of DCI comprises one or any combination of:

scrambling DCI of CRC through SI-RNTI;

scrambling DCI of CRC through RA-RNTI;

scrambling DCI of CRC through TC-RNTI; or the like, or, alternatively,

DCI of CRC is scrambled by P-RNTI.

9. The communication device of claim 7 or 8, wherein the second set of search spaces comprises one of the following or any combination thereof:

a type 0PDCCH common search space set;

a type0A PDCCH common search space set;

type 1PDCCH common search space set; or the like, or, alternatively,

type 2PDCCH common search space set.

10. A communication device, comprising:

a transceiver module configured to transmit the first DCI of the first value;

wherein the transceiver module is configured to transmit the first DCI for the first value by:

when the communication device sends the first DCI and the first type DCI at the same detection opportunity, sending the first DCI of the first value in a candidate downlink control channel resource of a first search space set and/or a candidate downlink control channel resource of a second search space set, where the candidate downlink control channel resource of the first search space set is used for transmitting the first DCI, and the candidate downlink control channel resource of the second search space set is used for transmitting the first type DCI.

11. The communications device of claim 10, wherein the first type of DCI comprises one or any combination of:

scrambling DCI of CRC through SI-RNTI;

scrambling DCI of CRC through RA-RNTI;

scrambling DCI of CRC through TC-RNTI; or the like, or, alternatively,

the DCI of the CRC is scrambled by the P-RNTI.

12. The communications device of claim 10 or 11, wherein the second set of search spaces comprises one of the following or any combination thereof:

a type 0PDCCH common search space set;

a type0A PDCCH common search space set;

type 1PDCCH common search space set; or the like, or, alternatively,

type 2PDCCH common search space set.

13. A communications apparatus, comprising a processor and a storage medium storing instructions that, when executed by the processor, cause the method of any of claims 1 to 3 to be implemented, or cause the method of any of claims 4 to 6 to be implemented.

14. A computer-readable storage medium, comprising instructions that, when executed by a processor, cause the method of any of claims 1-3 to be implemented, or cause the method of any of claims 4-6 to be implemented.