WO2019196715A1

WO2019196715A1 - Method, device, and system for transmission of downlink control information

Info

Publication number: WO2019196715A1
Application number: PCT/CN2019/081159
Authority: WO
Inventors: 杜振国; 丁志明; 韩云博; 庄宏成
Original assignee: 华为技术有限公司
Priority date: 2018-04-10
Filing date: 2019-04-03
Publication date: 2019-10-17
Also published as: CN108668369A; CN108668369B

Abstract

Provided in the embodiments of the present application are a method, a device, and a system for transmission of downlink control information, used for reducing the blind detection overheads of a receiving device, and thereby reducing the power consumption of the receiving device. The method comprises: a receiving device receives a first message sent by a sending device by means of a first interface of the receiving device, the first message carrying first indication information, and the first indication information being used for indicating the length of one or a plurality of DCI; on the basis of the first message, the receiving device wakes up a second interface of the receiving device; and, on the basis of the first indication information, the receiving device receives the one or a plurality of DCI sent by the sending device by means of the awoken second interface.

Description

Transmission method, device and system for downlink control information

This application claims the priority of the Chinese patent application filed on April 10, 2018, China National Intellectual Property Office, application number 201810317888.X, and the application name is "a transmission method, device and system for downlink control information", and On June 29, 2018, the Chinese National Intellectual Property Office, the application number is 201810714705.8, and the priority of the Chinese patent application entitled "Transmission Control Method, Equipment and System for Downlink Control Information", the entire contents of which are incorporated by reference. In this application.

Technical field

The present application relates to the field of communications technologies, and in particular, to a downlink control information (DCI) transmission method, device, and system.

Background technique

The current 3rd generation partnership project (3GPP) network supports the transmission of DCIs of different sizes.

For example, the terminal device can support both ultra-reliable and low latency communications (URLLC) and enhanced mobile broadband (eMBB) or massive machine type communication (mMTC). Wait. The DCI size of the different service types may be different. For example, the URLLC corresponds to a compact DCI (Compact DCI), and the eMBB corresponds to a general DCI (Normal DCI). The sizes of the two DCIs are different.

Alternatively, for example, the base station may send a terminal device-specific DCI (UE-specific DCI) to the terminal device, such as DCI for scheduling uplink (UL) or downlink (DL) transmission resources, or may send the terminal device to the terminal device. Group common DCI (G-DCI), such as G-DCI for dynamic time division duplexing (TDD) configuration. The terminal device-specific DCI and G-DCI are usually different in size, and there are multiple formats of different sizes in the G-DCI.

However, when the receiving device receives the DCI, it is necessary to perform blind detection on various physical DCXs on the physical downlink control channel (PDCCH), which will result in excessive power consumption of the receiving device.

Therefore, how to transmit the DCI makes it possible to reduce the blind detection overhead of the receiving device, thereby reducing the power consumption of the receiving device, which is an urgent problem to be solved.

Summary of the invention

The embodiment of the present application provides a method, a device, and a system for transmitting downlink control information, so as to reduce the blind detection overhead of the receiving device, thereby reducing power consumption of the receiving device.

To achieve the above object, embodiments provided by the present application include any of the following:

In a first aspect, a method for transmitting downlink control information is provided. The method includes: receiving, by a first interface of the receiving device, a first message sent by a sending device, where the first message carries first indication information, where An indication information is used to indicate the length of the one or more DCIs; the receiving device wakes up the second interface of the receiving device according to the first message; and the receiving device receives, according to the first indication information, the second interface after the awake The one or more DCIs sent by the sending device. Since the receiving device receives the DCI, the length of one or more DCIs can be obtained in advance. That is, when receiving the DCI, the receiving device knows in advance which size of the DCI or which type of DCI the transmitting device will send, and can directly detect the corresponding DCI on the PDCCH according to the length of the DCI, and does not need to be like the existing DCI. The technology requires blind detection of various possible sizes of DCI on the PDCCH. Therefore, based on the method for transmitting downlink control information provided by the embodiment of the present application, the blind detection overhead of the receiving device can be reduced, thereby reducing the power consumption of the receiving device. Further, for a battery-powered receiving device, the standby time of the receiving device can be increased, thereby improving the user experience.

In a possible design, before the second interface of the receiving device is in an active state, before the receiving device receives the first message sent by the sending device by using the first interface of the receiving device, the method further includes: the receiving device passes the The second interface receives an activation indication sent by the sending device, where the activation indication is used to indicate that the receiving device receives the first indication information by using the first interface before receiving the one or more DCIs. That is, it is considered that the transmission of the first indication information can bring about the power consumption gain of the receiving device in the case where there are multiple DCI lengths. For a receiving device having only one DCI length, the reception of the first indication information may bring a negative gain. Therefore, the transmitting device should be allowed to activate and deactivate the mechanism in the embodiment of the present application. For example, when the receiving device only needs to receive DCI of a DCI length, the sending device may send a deactivation indication to the receiving device, where the deactivation indication is used to indicate that the receiving device does not need to pass the first interface before receiving one or more DCIs. Receiving the first indication information. In this way, the sending device does not send the first indication information before transmitting the DCI, and the receiving device does not need to receive the first indication information, but can directly detect the DCI in the PDCCH. When the sending device considers that sending the first indication information can bring a gain to the power consumption of the receiving device, the activation indication may be sent to the second interface in which the receiving device is in an active state. In this way, after receiving the activation indication sent by the sending device, the receiving device may receive the first indication information through the first interface according to the activation indication, and then perform subsequent operations.

In a possible design, the receiving device receives the first message sent by the sending device by using the first interface of the receiving device, where the receiving device receives, by using the first interface of the receiving device, the third device that is sent by the sending device. The first message sent by the interface; the receiving device receives the one or more DCIs sent by the sending device by using the second interface after the waking, the receiving device receiving the sending device by using the second interface after the waking The one or more DCIs sent by the fourth interface of the sending device. That is, in a specific implementation, the transmitting device can communicate with the two interfaces of the receiving device through two interfaces. The third interface of the sending device communicates with the first interface of the receiving device, and the fourth interface of the sending device communicates with the second interface of the receiving device. In this case, the fourth interface of the sending device may be the main communication interface, and the third interface of the sending device may be the device wake-up interface; the first interface of the receiving device may be a wake-up radio interface, and the second interface of the receiving device may be Is the main communication interface.

In a possible design, the receiving device receives the first message sent by the sending device by using the first interface of the receiving device, where the receiving device receives, by using the first interface of the receiving device, the fourth sending device of the sending device The first message sent by the interface; the receiving device receives the one or more DCIs sent by the sending device by using the second interface after the waking, the receiving device receiving the sending device by using the second interface after the waking The one or more DCIs sent by the fourth interface of the sending device. That is, in a specific implementation, the transmitting device can communicate with two interfaces of the receiving device through one interface. The fourth interface of the sending device and the second interface of the receiving device communicate with each other. In this case, the fourth interface of the sending device may be the main communication interface, but at the same time, the sending capability of the wake-up signal is provided; The first interface of the receiving device may be a wake-up radio interface, and the second interface of the receiving device may be a main communication interface.

The second aspect provides a method for transmitting downlink control information, where the method includes: the sending device sends a first message to the first interface of the receiving device, where the first message carries first indication information, where the first indication information is used by Determining a length of the one or more DCIs, wherein the first message is used to wake up the second interface of the receiving device; the sending device sends the one or more DCIs to the second interface of the receiving device that is awake. Since the transmitting device first sends the first indication information indicating the length of the one or more DCIs to the receiving device before transmitting the one or more DCIs to the receiving device, the receiving device may obtain one or more in advance when receiving the DCI. The length of the DCI. That is, when receiving the DCI, the receiving device knows in advance which size of the DCI or which type of DCI the transmitting device will send, and can directly detect the corresponding DCI on the PDCCH according to the length of the DCI, and does not need to be like the existing DCI. The technology requires blind detection of various possible sizes of DCI on the PDCCH. Therefore, based on the method for transmitting downlink control information provided by the embodiment of the present application, the blind detection overhead of the receiving device can be reduced, thereby reducing the power consumption of the receiving device. Further, for a battery-powered receiving device, the standby time of the receiving device can be increased, thereby improving the user experience.

In a possible design, before the sending device sends the first message to the first interface of the receiving device, the method further includes: sending, by the sending device, an activation indication to the second interface in which the receiving device is in an active state, the activation indication The first indication information is received by the first interface of the receiving device before the receiving device is instructed to receive the one or more DCIs. That is, it is considered that the transmission of the first indication information can bring about the power consumption gain of the receiving device in the case where there are multiple DCI lengths. For a receiving device having only one DCI length, the reception of the first indication information may bring a negative gain. Therefore, the transmitting device can be allowed to activate and deactivate the mechanism in the embodiment of the present application. For example, when the receiving device only needs to receive DCI of a DCI length, the sending device may send a deactivation indication to the receiving device, where the deactivation indication is used to indicate that the receiving device does not need to pass the first interface before receiving one or more DCIs. Receiving the first indication information. In this way, the sending device does not send the first indication information before transmitting the DCI, and the receiving device does not need to receive the first indication information, but can directly detect the DCI in the PDCCH. When the sending device considers that sending the first indication information can bring a gain to the power consumption of the receiving device, the activation indication may be sent to the second interface in which the receiving device is in an active state. In this way, after receiving the activation indication sent by the sending device, the receiving device may receive the first indication information through the first interface according to the activation indication, and then perform subsequent operations.

In a possible design, the sending device sends the first message to the first interface of the receiving device, where the sending device sends the first message to the first interface of the receiving device by using the third interface of the sending device; Sending the one or more DCIs to the second interface of the receiving device that is awake, including: sending, by the sending device, the one or the awake second interface of the receiving device by using the fourth interface of the sending device Multiple DCIs. That is, in a specific implementation, the transmitting device can communicate with the two interfaces of the receiving device through two interfaces. The third interface of the sending device communicates with the first interface of the receiving device, and the fourth interface of the sending device communicates with the second interface of the receiving device. In this case, the fourth interface of the sending device may be the main communication interface, and the third interface of the sending device may be the device wake-up interface; the first interface of the receiving device may be a wake-up radio interface, and the second interface of the receiving device may be Is the main communication interface.

In a possible design, the sending device sends the first message to the first interface of the receiving device, where the sending device sends the first message to the first interface of the receiving device by using the fourth interface of the sending device; Transmitting the one or more DCIs to the second interface that is awake after the receiving device includes: sending, by the sending device, the one interface of the sending device to the second interface that is awake after receiving the one Or multiple DCIs. That is, in a specific implementation, the transmitting device can communicate with two interfaces of the receiving device through one interface. The fourth interface of the sending device and the second interface of the receiving device communicate with each other. In this case, the fourth interface of the sending device may be the main communication interface, but at the same time, the sending capability of the wake-up signal is provided; The first interface of the receiving device may be a wake-up radio interface, and the second interface of the receiving device may be a main communication interface.

A third aspect provides a receiving device, where the receiving device includes: a first receiving module, a second receiving module, and a waking module; and a first receiving module, configured to receive, by using a first interface of the receiving device, a sending device a message, the first message carries the first indication information, where the first indication information is used to indicate the length of the one or more downlink control information DCI, and the wake-up module is configured to wake up the second of the receiving device according to the first message. And the second receiving module is configured to receive, by the second interface that is awake, the one or more DCIs sent by the sending device according to the first indication information.

In a possible design, the second receiving module is further configured to receive, by the second interface, the sending, before the first interface receives the first message sent by the sending device, when the second interface of the receiving device is in an active state. An activation indication sent by the device, the activation indication is used to indicate that the receiving device receives the first indication information by using the first interface before receiving the one or more DCIs.

In a possible design, the first receiving module is configured to receive, by using the first interface of the receiving device, the first message sent by the sending device, including: receiving, by using the first interface of the receiving device, the sending device by using the sending The first message sent by the third interface of the device; the second receiving module is configured to receive the one or more DCIs sent by the sending device by using the second interface that is awake, including: The second interface receives the one or more DCIs sent by the sending device through the fourth interface of the sending device.

In a possible design, the first receiving module is configured to receive, by using the first interface of the receiving device, the first message sent by the sending device, including: receiving, by using the first interface of the receiving device, the sending device by using the sending The first message sent by the fourth interface of the device; the second receiving module is configured to receive the one or more DCIs sent by the sending device by using the second interface that is awake, including: The second interface receives the one or more DCIs sent by the sending device through the fourth interface of the sending device.

For the technical effects brought by any one of the third aspects, refer to the technical effects brought by different design modes in the first aspect, and details are not described herein again.

The fourth aspect provides a sending device, where the sending device includes: a sending module, and a sending module, configured to send a first message to the first interface of the receiving device, where the first message carries the first indication information, the first indication The information is used to indicate the length of the one or more downlink control information DCI, where the first message is used to wake up the second interface of the receiving device, and the sending module is further configured to use the second device after the wakeup of the receiving device The interface sends the one or more DCIs.

In a possible design, the sending module is further configured to: before sending the first message to the first interface of the receiving device, send an activation indication to the second interface in which the receiving device is in an active state, the activation indication is used to indicate the The receiving device receives the first indication information through the first interface of the receiving device before receiving the one or more DCIs.

In a possible design, the sending module is configured to send the first message to the first interface of the receiving device, including: sending, by using the third interface of the sending device, the first message to the first interface of the receiving device; The sending module is configured to send the one or more DCIs to the second interface of the receiving device that is awake, including: the second interface that is used to wake up to the receiving device by using the fourth interface of the sending device Send the one or more DCIs.

In a possible design, the sending module is configured to send the first message to the first interface of the receiving device, including: sending, by using the fourth interface of the sending device, the first message to the first interface of the receiving device; The sending module is configured to send the one or more DCIs to the second interface that is awake to the receiving device, including: the second interface that is awake to the receiving device by using the fourth interface of the sending device The interface sends the one or more DCIs.

For the technical effects brought by any one of the fourth aspects, refer to the technical effects brought by different design modes in the second aspect, and details are not described herein again.

A fifth aspect provides a receiving device, where the receiving device includes: a first interface, a second interface, and a processor; and a first interface, configured to receive a first message sent by the sending device, where the first message carries the first indication Information, the first indication information is used to indicate the length of the one or more downlink control information DCI, and the processor is configured to wake up the second interface of the receiving device according to the first message; Receiving the one or more DCIs sent by the sending device.

In a possible design, the second interface is further configured to receive, after the first interface receives the first message sent by the sending device, the activation indication sent by the sending device, where the activation indication is used, The receiving device is instructed to receive the first indication information through the first interface of the receiving device before receiving the one or more DCIs.

In a possible design, the first interface is configured to receive the first message sent by the sending device, where the first interface is configured to receive the first message sent by the sending device by using the third interface of the sending device; The second interface is configured to receive one or more DCIs sent by the sending device, where the second interface after the waking is used to receive the one or more DCIs sent by the sending device by using the fourth interface of the sending device.

In a possible design, the first interface is configured to receive the first message sent by the sending device, including: receiving the first message sent by the sending device by using the fourth interface of the sending device; Receiving, by the receiving device, the one or more DCIs, the second interface after the waking is used to receive the one or more DCIs sent by the sending device by using the fourth interface of the sending device.

For the technical effects brought by any one of the fifth aspects, refer to the technical effects brought by different design modes in the first aspect, and details are not described herein again.

According to a sixth aspect, a sending device is provided, the sending device includes: a transmitter, configured to send a first message to the first interface of the receiving device, where the first message carries first indication information, the first indication The information is used to indicate the length of the one or more downlink control information DCI, wherein the first message is used to wake up the second interface of the receiving device; the transmitter is further configured to the second device after the wakeup of the receiving device The interface sends the one or more DCIs.

In a possible design, the transmitter is further configured to: before sending the first message to the first interface of the receiving device, send an activation indication to the second interface in which the receiving device is in an active state, the activation indication is used to indicate The receiving device receives the first indication information through the first interface of the receiving device before receiving the one or more DCIs.

In a possible design, the transmitter includes a third interface and a fourth interface (in this case, the transmitter can be understood to include the first transmitter and the second transmitter); the transmitter (specifically a transmitter for transmitting the first message to the first interface of the receiving device, comprising: sending, by using the third interface, the first message to the first interface of the receiving device; the transmitter (specifically, the second sending The transmitting the one or more DCIs to the second interface that is awake to the receiving device, including: sending, by using the fourth interface, the one of the second interface that is awake to the receiving device Or multiple DCIs.

In a possible design, the transmitter includes a fourth interface, and the transmitter is configured to send the first message to the first interface of the receiving device, where: the sending, by the fourth interface, the first interface is sent to the first interface of the receiving device a message, the transmitter is configured to send the one or more DCIs to the second interface that is awake after the receiving device, and configured to: send, by using the fourth interface, the second interface that is awake to the receiving device The one or more DCIs.

For the technical effects brought by any one of the sixth aspects, refer to the technical effects brought by different design modes in the second aspect, and details are not described herein again.

Based on any of the above aspects to the sixth aspect, in one possible design, the first indication information may be characterized by a DCI length indication bit table, wherein the n-bit DCI length indication bit table is used for Indicates the length of n DCIs, where n is a positive integer.

Based on any of the foregoing first to sixth aspects, in one possible design, the first indication information is characterized by one or more DCI length indication fields, wherein m DCI length indication fields are used to indicate The length of m DCIs, m is a positive integer.

Based on any of the above first to sixth aspects, in one possible design, the first indication information is characterized by k bits, wherein k bits are used to indicate less than or equal to 2 ^k The length of DCI, k is a positive integer.

Based on any of the foregoing first to sixth aspects, in a possible design, when the first indication information indicates that the length of the first DCI is the first value, the first value indicates that the sending device does not Send the first DCI. In this way, the receiving device can know in time that the sending device does not send the first DCI, so that the receiving device does not need to detect the first DCI on the PDCCH.

Based on any of the above first to sixth aspects, in one possible design, the receiving device comprises a terminal device.

Based on any of the above first to sixth aspects, in one possible design, the transmitting device comprises a terminal device or an access device.

According to a seventh aspect, a receiving device is provided, the receiving device includes a processor, a first interface, a second interface, and a memory; wherein the first interface and the second interface are configured to communicate with an external device; The storage computer executes an instruction, when the receiving device is in operation, the processor executes the computer-executed instruction stored in the memory, so that the receiving device performs the transmission method of the downlink control information according to any one of the foregoing first aspects. .

In an eighth aspect, a receiving device is provided, the receiving device being configured to perform the method of transmitting downlink control information according to any of the above first aspects.

A ninth aspect, a computer program product, comprising a computer program, when executed on a computer unit, causes the computer unit to implement downlink control information as described in any one of the above first aspects Transmission method.

According to a tenth aspect, a computer program is provided which, when executed on a computer unit, causes the computer unit to implement the method of transmitting downlink control information as described in any one of the above first aspects.

In an eleventh aspect, a computer readable storage medium having stored thereon a computer program, which when executed on a computer, causes the computer to implement any of the first aspect described above The transmission method of the downlink control information.

According to a twelfth aspect, a communication device is provided, comprising: a processing module and a communication interface, the processing module being configured to perform the method for transmitting downlink control information according to any one of the above first aspects.

In a possible design, the communication device further includes a storage module for storing an instruction, the processing module is configured to execute an instruction stored by the storage module, and execution of the instruction stored in the storage module causes the The processing module performs the transmission method of the downlink control information according to any one of the above first aspects.

For the technical effects brought by any one of the seventh aspect to the twelfth aspect, refer to the technical effects brought by different design modes in the first aspect, and details are not described herein again.

A thirteenth aspect, a transmitting device is provided, the transmitting device comprising a processor, a transceiver, and a memory; wherein the transceiver is configured to communicate with an external device; the memory is configured to store a computer to execute an instruction when the transmitting device In operation, the processor executes the computer-executed instructions stored in the memory to cause the transmitting device to perform the method of transmitting downlink control information as described in any of the above second aspects.

In a fourteenth aspect, a transmitting device is provided, the transmitting device being configured to perform the method of transmitting downlink control information according to any of the above second aspects.

In a fifteenth aspect, a computer program product is provided, comprising a computer program that, when executed on a computer unit, causes the computer unit to implement the downlink control of any of the above second aspects The method of transmitting information.

In a sixteenth aspect, a computer program is provided which, when executed on a computer unit, causes the computer unit to implement the method of transmitting downlink control information as described in any of the above second aspects.

A seventeenth aspect, a computer readable storage medium having stored thereon a computer program, which when executed on a computer, causes the computer to implement any of the second aspect described above The transmission method of the downlink control information.

According to an eighteenth aspect, a communication device is provided, comprising: a processing module and a communication interface, the processing module being configured to perform the method for transmitting downlink control information according to any one of the above second aspects.

In a possible design, the communication device further includes a storage module for storing an instruction, the processing module is configured to execute an instruction stored by the storage module, and execution of the instruction stored in the storage module causes the The processing module performs the transmission method of the downlink control information according to any one of the above second aspects.

For the technical effects brought by any one of the thirteenth to eighteenth aspects, refer to the technical effects brought by different design modes in the second aspect, and details are not described herein again.

A nineteenth aspect, the invention provides a communication system comprising the receiving device of any of the above aspects and the transmitting device of any of the above aspects.

In a possible design, the communication device may specifically be a chip system.

It should be noted that the numbers of the embodiments provided above have no clear correspondence with the numbers of the embodiments to be described later, and only the convenience of the parts is expressed.

Alternatively, as described in the section of the prior application, the embodiment provided by the present application further includes any one of the following:

A method for transmitting downlink control information, where the method for transmitting downlink control information is applied to a network device and at least one terminal device, where the network device includes a first interface and a second interface, and the terminal device includes a third interface And the fourth interface, the first interface and the third interface communicate by using a first communication manner, the second interface and the fourth interface are communicated by using a second communication manner, and the third interface is activated. a state or an intermittent activation state, the fourth interface is currently in a closed state; the method includes: the network device sending a DCI size indication message to the third interface of the terminal device by using the first interface, the DCI The size indication message includes a first DCI size indication, where the first DCI size indication is used to indicate that the network device is about to send a first DCI whose size is a first length; the network device uses the second interface to Transmitting, by the fourth interface of the terminal device, the first DCI, where the size of the first DCI is the first length, and the fourth interface is in the The terminal device after receiving the first wake-up indication DCI size.

The base station first passes the DCI size indication message carried by the WUS before transmitting the DCI, so that the UE can detect the DCI of the corresponding size according to the DSI received on the WUR interface after waking up the main communication interface, without blindly checking all possible DCIs. Size, which saves UE power consumption.

2. The method for transmitting downlink control information according to the embodiment 1, the first DCI size indication is further used to indicate whether the network device is about to send a DCI.

If the UE detects that the base station indicates in the DSI indication message that the base station does not send the DCI message, the UE does not have to wake up its own main communication interface, thereby making the UE more power-saving.

The method for transmitting downlink control information according to the embodiment 1 or 2, wherein the DCI size indication message further includes a second DCI size indication, where the second DCI size indication is used to indicate that the size to be sent is the second length. The second DCI. The base station may send DCIs of multiple sizes to the same UE at the same time, so the indication needs to be indicated by the second DCI size indication in the DSI message.

The method for transmitting downlink control information according to the third embodiment, the network device sends the second DCI by using the second interface, and the size of the second DCI is the second length.

The method for transmitting downlink control information according to any one of the embodiments 1-4, before the network device sends the DCI size indication message, the network device sends an activation indication by using the second interface, The activation indication is used to instruct the terminal device to receive the DCI size indication message through the third interface before receiving the DCI.

In some cases (for example, when the UE only needs to receive one DCI size), the base station sends a DSI message to bring a negative gain to the UE power consumption. Therefore, the base station should be allowed to send an activation indication to the UE by sending the primary communication interface to disable the DSI message transmission. . In this case, the UE does not have to detect the DSI message through the WUR, but directly detects the DCI through the primary communication interface. When the base station considers that sending the DSI message can bring gain to the UE power consumption, the activation indication can be sent to the UE through the primary communication interface to enable DSI message transmission.

The method for transmitting downlink control information according to any one of the embodiments 1-5, wherein the first interface and the third interface are wake-up radio interfaces, and the second interface and the fourth interface are main communications. interface.

A method for transmitting downlink control information, the method being applied to a network device and at least one terminal device, where the network device includes a first interface and a second interface, where the terminal device includes a third interface and a fourth interface, The first interface and the third interface communicate by using a first communication manner, the second interface and the fourth interface are communicated by using a second communication manner, and the third interface is activated or intermittently activated. a state, the fourth interface is currently in a closed state; the method includes: receiving, by the terminal device, a DCI size indication message sent by the network device by using the first interface by using the third interface, where the DCI size indication message is Including a first DCI size indication, the first DCI size indication is used to indicate that the network device is about to send a first DCI whose size is a first length; the terminal device wakes up the fourth interface; the terminal device wakes up The fourth interface receives the first DCI sent by the network device, and the size of the first DCI is the first length. The base station first passes the DCI size indication message carried by the WUS before transmitting the DCI, so that the UE can detect the DCI of the corresponding size according to the DSI received on the WUR interface after waking up the main communication interface, without blindly checking all possible DCIs. Size, which saves UE power consumption.

The method for transmitting downlink control information according to the seventh embodiment, wherein the first DCI size indication is further used to indicate whether the network device is about to send a DCI. If the UE detects that the base station indicates in the DSI indication message that the base station does not send the DCI message, the UE does not have to wake up its own main communication interface, thereby making the UE more power-saving.

The method for transmitting downlink control information according to the embodiment 7 or 8, wherein the DCI size indication message further includes a second DCI size indication, where the second DCI size indication is used to indicate that the size to be sent is the second length. The second DCI. The base station may send DCIs of multiple sizes to the same UE at the same time, so the indication needs to be indicated by the second DCI size indication in the DSI message.

The method for transmitting downlink control information according to the embodiment 9, the terminal device receives the second DCI by using the fourth interface after waking, and the size of the second DCI is the second length.

The method for transmitting downlink control information according to any one of the embodiments 7-10, before the terminal device receives the DCI size indication message, and the fourth interface is in an active state, the terminal device passes the The fourth interface receives an activation indication sent by the network device, where the activation indication is used to indicate that the terminal device receives the DCI size indication message by using a third interface before receiving the DCI. In some cases, the base station transmitting DSI messages will bring negative gain to the UE power consumption, so the base station should be allowed to disable DSI message transmission. In this case, the UE does not have to detect the DSI message through the WUR, but directly detects the DCI through the primary communication interface.

The method for transmitting downlink control information according to any one of the embodiments 7-11, wherein the first interface and the third interface are wake-up radio interfaces, and the second interface and the fourth interface are main communications. interface.

13. A network device, the network device comprising: a processor, a memory and a transmitter; the transmitter for transmitting data; the memory for storing instructions; the processor, for performing the The instruction in the memory performs the transmission method of the downlink control information as described in any of Embodiments 1-6.

14. The network device of embodiment 13, the transmitter comprising:

Wake up the RF transmitter, and send the DCI size indication message as described in any of Embodiments 1-6;

a primary communication interface transmitter for transmitting the first DCI, the second DCI, and the activation indication as described in any of embodiments 1-6.

15. A terminal device, comprising: a processor, a memory, a main communication interface receiver, and a wake-up radio frequency receiver, wherein the main communication interface transceiver is in an off state, and the wake-up radio frequency receiver is in an active state or An intermittent activation state; the primary communication interface receiver and the wake-up radio frequency receiver are configured to receive data; the memory is configured to store instructions; and the processor is configured to execute the instructions in the memory, such as The method for transmitting downlink control information according to any one of embodiments 7-12.

16. The terminal device according to embodiment 15, the wake-up radio frequency receiver is configured to receive a DCI size indication message according to any one of embodiments 7-12, wherein the main communication interface receiver is configured to receive, as in Embodiment 7-12 Any of the first DCI, the second DCI, and the activation indication.

17. A computer program product comprising a computer program which, when executed on a computer unit, causes the computer unit to implement the method of transmitting downlink control information as described in any of embodiments 1-6.

18. A computer program product comprising a computer program which, when executed on a computer unit, causes the computer unit to implement the method of transmitting downlink control information as described in any of embodiments 7-12.

A computer program that, when executed on a computer unit, causes the computer unit to implement the method of transmitting downlink control information as described in any of embodiments 1-6.

20. A computer program that, when executed on a computer unit, causes the computer unit to implement the method of transmitting downlink control information as described in any of embodiments 7-12.

A network device configured to perform the method of transmitting downlink control information as described in any of embodiments 1-6.

22. A terminal device configured to perform the method of transmitting downlink control information as described in any of embodiments 7-12.

23. A computer readable storage medium having stored thereon a computer program that, when executed on a computer, causes the computer to implement transmission of downlink control information as described in any of embodiments 1-6 method.

24. A computer readable storage medium having stored thereon a computer program that, when executed on a computer, causes the computer to implement transmission of downlink control information as described in any of embodiments 7-12 method.

A communication system comprising the network device of any of embodiments 1-6 and the terminal device of any of embodiments 7-12.

A chip, comprising: a processing module and a communication interface, the processing module for performing the communication method according to any one of embodiments 1-6.

The chip of embodiment 26, the chip further comprising a storage module, the storage module is configured to store an instruction, the processing module is configured to execute an instruction stored by the storage module, and is in the storage module Execution of the stored instructions causes the processing module to perform the communication method of any of embodiments 1-6.

28. A chip comprising: a processing module and a communication interface, the processing module for performing the communication method of any of embodiments 7-12.

The chip of embodiment 28, the chip further comprising a storage module, the storage module is configured to store an instruction, the processing module is configured to execute an instruction stored by the storage module, and is in the storage module Execution of the stored instructions causes the processing module to perform the communication method of any of embodiments 7-12.

DRAWINGS

FIG. 1 is a schematic structural diagram of a DCI transmission system according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of hardware of a receiving device according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of hardware of a sending device according to an embodiment of the present disclosure;

4 is a schematic diagram of an interface of a sending device and a receiving device according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a conventional wake-up window;

FIG. 6 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a receiving device according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a sending device according to an embodiment of the present disclosure.

detailed description

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

In the description of the present application, unless otherwise stated, "/" means the meaning of or, for example, A/B may represent A or B; "and/or" herein is merely an association describing the associated object. The relationship indicates that there may be three kinds of relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately. Also, in the description of the present application, "a plurality" means two or more than two unless otherwise stated. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", and the like are used to distinguish the same items or similar items whose functions and functions are substantially the same. Those skilled in the art can understand that the words "first", "second" and the like are merely for convenience of description and are not intended to limit the scope of the application.

In the meantime, it should be understood that in the various embodiments of the present application, the sequence numbers of the following processes do not mean the order of execution sequence, and some or all of the steps may be performed in parallel or sequentially, and the execution order of each process shall be The function and the intrinsic logic are determined without any limitation on the implementation process of the embodiments of the present application.

In addition, the network architecture and the service scenario described in the embodiments of the present application are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present application, and are not limited to the technical solutions provided by the embodiments of the present application. With the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

As shown in FIG. 1 , a DCI transmission system 10 according to an embodiment of the present application includes a receiving device 20 and a transmitting device 30.

The sending device 30 is configured to send a first message to the first interface of the receiving device 20, where the first message carries first indication information, where the first indication information is used to indicate the length of one or more DCIs.

The receiving device 20 is configured to receive, by using the first interface of the receiving device 20, the first message sent by the sending device 30, and wake up the second interface of the receiving device 20 according to the first message.

The sending device 30 is further configured to send one or more DCIs to the second interface of the receiving device 20 after being awake.

The receiving device 101 is further configured to receive, by using the first indication information, one or more DCIs sent by the sending device 30 by using the second interface after waking up.

In the transmission system of the DCI provided by the embodiment of the present application, when receiving the DCI, the receiving device may obtain the length of one or more DCIs in advance. That is, when receiving the DCI, the receiving device knows in advance which size of the DCI or which type of DCI the transmitting device will send, and can directly detect the corresponding DCI on the PDCCH according to the length of the DCI, and does not need to be like the existing DCI. The technology requires blind detection of various possible sizes of DCI on the PDCCH. Therefore, based on the DCI transmission system provided by the embodiment of the present application, the blind detection overhead of the receiving device can be reduced, thereby reducing the power consumption of the receiving device. Further, for a battery-powered receiving device, the standby time of the receiving device can be increased, thereby improving the user experience.

Optionally, the receiving device in the embodiment of the present application may include a terminal device.

Optionally, the sending device in the embodiment of the present application may include a terminal device or an access device.

Optionally, the terminal device involved in the embodiment of the present application may include various handheld devices having wireless communication functions, an in-vehicle device, a wearable device, a computing device, a sensor, or other processing device connected to the wireless modem; It may also include a subscriber unit, a cellular phone, a smart phone, a smart watch, a smart bracelet, a wireless data card, a mobile phone, a laptop, a super mobile personal computer (ultra-mobile personal computer). , UMPC), netbook, personal digital assistant (PDA) computer, tablet computer, wireless modem (modem), laptop computer (laptop computer), cordless phone (cordless phone) or wireless local loop (wireless Local loop, WLL) A station type, a machine type communication (MTC) terminal, a user equipment (UE), a mobile station (MS), or a relay user equipment. The relay user equipment may be, for example, a 5G residential gateway (RG). For convenience of description, in the present application, the above-mentioned devices are collectively referred to as terminal devices.

Optionally, the access device involved in the embodiment of the present application refers to a device that accesses the core network, and may be, for example, a base station, a broadband network gateway (BNG), an aggregation switch, and a non-3GPP access device. Wait. The base station may include various types of base stations, such as a macro base station, a micro base station (also referred to as a small station), a relay station, an access point, and the like, which are not specifically limited in this embodiment of the present application.

FIG. 2 is a schematic diagram showing the hardware structure of a receiving device 20 according to an embodiment of the present application. The receiving device 20 includes a processor 201, a communication line 202, a memory 203, a first interface 204, and a second interface 207.

The processor 201 can be a general central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the execution of the program of the present application. An integrated circuit, such as one or more digital singnal processors (DSPs), or one or more field programmable gate arrays (FPGAs).

Communication line 202 can include a path for communicating information between the components described above. The communication line 202 can be divided into an address bus, a data bus, a control bus, etc., and can be an Ethernet bus, an industry standard architecture (ISA) bus, a peripheral component (PCI) bus, or Extend the industry standard architecture (EISA) bus and so on. For ease of representation, each of the communication buses is represented by only one thick line in FIG. 2, but does not mean that there is only one bus or one type of bus.

The first interface 204 may also be referred to as a first communication interface or a receiver, and the first interface may specifically be a wake-up radio interface for receiving a wake-up signal (or wake-up frame, wake-up message, etc.). In the embodiment of the present application, the first interface is configured to receive a first message (a type of the wake-up signal) sent by the sending device, where the first message carries first indication information indicating a length of the one or more DCIs.

The second interface 207 can also be referred to as a second communication interface or a transceiver. The second interface can be a main communication interface for communicating with other devices or communication networks, such as Ethernet, RAN, WLAN, and the like. In the embodiment of the present application, the second interface is configured to receive one or more DCIs sent by the sending device according to the first indication information.

Memory 203 can be either volatile memory or non-volatile memory, or can include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory. The volatile memory can be a random access memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), double data rate synchronous dynamic random access memory (DDR), enhanced synchronous dynamic random access memory (ESDRAM), synchronously connected dynamic random access memory (synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (direct RAM bus, DR RAM). It should be noted that the memories described herein are intended to comprise, without being limited to, these and any other suitable types of memory.

The memory 203 may exist independently and connected to the processor 201 through the communication line 202; the memory 203 may also be integrated with the processor 201.

The memory 203 is used to store computer execution instructions for executing the solution of the present application, and is controlled by the processor 201 for execution. The processor 201 is configured to execute a computer-executed instruction stored in the memory 203, so as to implement a method for transmitting downlink control information provided by the following embodiments of the present application.

Optionally, the computer-executed instructions in the embodiment of the present application may also be referred to as an application code, which is not specifically limited in this embodiment of the present application.

In a particular implementation, as an embodiment, processor 201 may include one or more CPUs, such as CPU0 and CPU1 in FIG.

In a particular implementation, as an embodiment, receiving device 20 can include multiple processors. For example, as shown in FIG. 2, the receiving device 20 can include a processor 201 and a processor 208. Each of these processors can be a single-CPU processor or a multi-core processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.

In a specific implementation, as an embodiment, the receiving device 20 may further include an output device 205 and an input device 206. Output device 205 is in communication with processor 201 and can display information in a variety of ways. For example, the output device 205 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. Wait. Input device 206 is in communication with processor 201 and can receive user input in a variety of ways. For example, input device 206 can be a mouse, keyboard, touch screen device or sensing device, and the like.

Although not shown, the receiving device 20 may further include a wireless fidelity (WiFi) module, a Bluetooth module, a camera, and the like, and details are not described herein.

FIG. 3 is a schematic diagram showing the hardware structure of a transmitting device 30 according to an embodiment of the present application. The transmitting device 30 includes a processor 301, a communication line 302, a memory 303, and a transmitter 304. Optionally, as shown in FIG. 3, the sending device 30 may further include one or more of the output device 305, the input device 306, or the processor 308, which is not specifically limited in this embodiment of the present application.

For a detailed description of the processor 301, the communication line 302, the memory 303, the output device 305, the input device 306, or the processor 308, reference may be made to the processor 201, the communication line 202, the memory 203, and the output device 205 in FIG. Description of device 206, or processor 208, is not described herein.

Optionally, in a possible implementation manner, the transmitter 304 can include a fourth interface 304a. The fourth interface 304a may also be referred to as a fourth communication interface or a transceiver. The fourth interface 304a may be a main communication interface for communicating with other devices or communication networks, such as Ethernet, RAN, WLAN, and the like.

Illustratively, the fourth interface 304a can be in communication with the first interface 204 and the second interface 207 of the receiving device 20. For example, the transmitting device 30 transmits the first message to the first interface 204 of the receiving device 20 through the fourth interface 304a of the transmitting device 30; and the transmitting device 30 wakes up to the receiving device 20 through the fourth interface 304 of the transmitting device 30. The second interface 207 sends one or more DCIs.

Optionally, in another possible implementation, the transmitter 304 may include a fourth interface 304a and a third interface 304b. The fourth interface 304a may also be referred to as a fourth communication interface or a transceiver, and the fourth interface 304a may be a main communication interface, for communicating with other devices or communication networks, such as Ethernet, RAN, WLAN, etc. The third interface 304b may also be referred to as a third communication interface or a transmitter. The first interface may specifically be a wake-up radio interface for transmitting a wake-up signal (or wake-up frame, wake-up message, etc.).

Illustratively, the fourth interface 304a can be in communication with the second interface 207 of the receiving device 20, and the third interface 304b can be in communication with the first interface 204 of the receiving device 20. For example, the transmitting device 30 transmits the first message to the first interface 204 of the receiving device 20 through the third interface 304b of the transmitting device 30; and the transmitting device 30 transmits the second interface to the receiving device 20 through the fourth interface 304a of the transmitting device 30. 207 sends one or more DCIs.

For example, the first interface 204 of the terminal device may be a wake-up radio/receiver (WUR), as shown in FIG. 4, assuming that the sending device 30 is a base station and the receiving device 20 is a terminal device. The interface (also referred to as a WUR module), the second interface 207 of the terminal device may be a main interface (such as LTE/NR, etc., also referred to as a main module or a main communication interface). The fourth interface 304 of the transmitting device 30 can be a primary interface. The main interface of the sending device 30 can be used not only for transmitting and receiving main interface signals (for example, long term evolution (LTE)/new radio (NR) signals), but also for transmitting Wake signals as a WUR interface. . Alternatively, as shown in FIG. 4, in a case where the transmitting device 30 further includes the third interface 307, the third interface 307 of the transmitting device 30 may be a WUR interface. At this time, the main interface of the transmitting device 30 is used to transmit and receive a main interface signal (for example, LTE)/NR signal, and the WUR interface of the transmitting device 30 is used to transmit a wake-up signal.

In the embodiment of the present application, the signal that can be received and decoded by the WUR interface of the receiving device is called a wake-up signal (WUS), such as the wake-up packet in the following embodiments of the present application or the following embodiments in the present application. The first message.

The following is a brief description of the WUR interface.

As shown in FIG. 4, the terminal device (such as the terminal device 1 or the terminal device 2) can introduce a WUR interface based on the configuration of the traditional primary interface. The main interface is usually in the off state. The main interface is activated only when the trigger signal from the WUR interface is received, and then the data communication is performed with the base station through the main interface. The trigger signal may be an interrupt signal sent by the WUR interface to the main interface, and is used to trigger the main interface to enter an active state. The trigger signal is an internal signal of the terminal device and can be transmitted by wire or wirelessly. It should be noted that the WUR interface sends a trigger signal to the main interface. In the actual system, the WUR interface can also forward the received wake-up signal to the processor of the terminal device, and the processor of the terminal device determines whether The main interface is awakened. In this case, the trigger signal is actually sent by the processor, which is not specifically limited in this embodiment of the present application.

The WUR interface of the terminal device is continuously in the receiving state (also referred to as an active state), or intermittently in the receiving state. When the WUR interface receives a wake-up packet (also referred to as a wake-up frame, which is a kind of wake-up signal) from the base station in the receiving state, a trigger signal is sent to the main interface to wake up the main interface that is in the off state, and then Data interaction (ie, data packet interaction in FIG. 4) is performed through the awake primary interface and the primary interface of the base station. The base station side logically includes a primary interface and a WUR interface. However, for the current 3GPP standard, the primary interface is often an orthogonal frequency division multiplexing (OFDM) wideband transmitter, and the WUR wakeup signal may It is a narrowband signal (to reduce the WUR's received power consumption). For cost reduction and structural simplicity, an OFDM wideband transmitter can be used to generate a narrowband WUR wakeup signal. For example, a partial subcarrier of the OFDM signal is vacant and the signal is transmitted only on the narrowband corresponding to the WUR wakeup signal, thereby generating a narrowband signal. This is an example of generating a WUR narrowband signal by using an OFDM wideband transmitter, so that the base station side in FIG. 4 can only Contains a primary interface. Optionally, in the specific implementation of the base station, the primary interface and the WUR interface may be separately implemented, that is, the base station side in FIG. 4 may also include the primary interface and the WUR interface, which is not specifically limited in this embodiment of the present application.

It should be noted that the base station and the terminal device in FIG. 4 have only one antenna. This is mainly considering that the same antenna can be shared by the main interface and the WUR interface when the same or close frequency band carrier is used, thereby saving cost and simplifying the device structure. Certainly, the main interface and the WUR interface may also use different antennas, which are not specifically limited in this embodiment of the present application. When the main interface and the WUR interface use different frequency band carriers with a larger distance in the frequency domain, the two antennas should be configured with different antennas. For example, the primary interface uses the 6 GHz band and the WUR interface uses the 1.8 GHz band, where both antennas should use different antennas.

The terminal device adopts the WUR interface to receive the wake-up signal and can reduce the power consumption by using the main interface to receive the wake-up signal. The main reason is that the receiving and decoding of the wake-up signal is much simpler than the traditional main interface signal. The wake-up signal usually adopts a modulation method that is easy to receive at the receiving end, such as on-off key (OOK) modulation, frequency shift keying (FSK) modulation, or amplitude-shift keying (amplitude-shift keying). , ASK) and so on. Taking OOK modulation as an example, the receiving device judges the information carried by the received signal by the presence or absence of energy, for example, the energy is 1, and the energy is zero. The traditional main interface signal (such as the LTE/NR signal) uses OFDM modulation, Turbo/low density parity check code (LDPC)/Polar channel coding, etc. on the transmitting device side, and accordingly, the receiving device The side needs to perform complex signal processing operations such as fast fourier transform (FFT) and forward error correction (FEC) decoding, which require a lot of energy. Another method for implementing the low-power WUR is that the receiving device uses a passive receiver, such as a near field communication (NFC) technology, which is not specifically limited in this embodiment of the present application.

The main interface of the terminal device and the base station in FIG. 4 may be a WiFi interface (also referred to as a WiFi module) or a Bluetooth interface (also referred to as a Bluetooth module), which is not specifically limited in this embodiment of the present application. In the embodiment of the present application, the modules for data communication are collectively referred to as a main communication module or a main interface (main radio) or a main communication interface, such as an LTE, NR, or WiFi module, etc., and modules for wake-up of devices are collectively referred to as WUR. The module or WUR interface is uniformly described here, and will not be described below. For cost-saving and simplified design considerations, the WUR interface on the receiving device side often only needs to have the receiving capability of the wake-up signal, without the need for transmission capability.

In addition, if the WUR interface of the terminal device is in the receiving state for a long time, it is obviously more power-consuming. One solution is that the WUR interface of the terminal device is intermittently in the receiving state. The time window in which the WUR interface of the terminal device is in the receiving state is called a Wakeup window. The appearance of such an awake window should be regular so that the base station can know when the WUR interface of the terminal device can receive the wake-up signal. For example, the WUR interface is in the receiving state for 2ms every 100ms, as shown in Figure 5. When the base station has data to send to the terminal device, the wake-up packet may be sent in the wake-up window of the terminal device, thereby waking up the main interface of the terminal device. The start time, window duration, and period of the wake-up window can be standard pre-defined or configured by the base station. Of course, the waking window may not be introduced, that is, the WUR interface of the terminal device is always in the receiving state, which makes the base station wake up the terminal device at any time, which is beneficial to reduce the wake-up delay, which is not specifically limited in this embodiment of the present application.

It should be noted that FIG. 4 is merely an exemplary illustration of a transmitting device as a base station. Of course, as described above, the sending device in the embodiment of the present application may also be the foregoing terminal device, which is not specifically limited in this embodiment of the present application.

It should be noted that, since FIG. 4 is mainly described for the first interface and the second interface of the terminal device, and the third interface and the fourth interface of the base station, for simplicity, FIG. 4 is merely an exemplary illustration. Related interfaces. For the remaining modules of the base station, reference may be made to the sending device 30 shown in FIG. 3, and the remaining modules of the terminal device may refer to the receiving device 20 shown in FIG. 2, and details are not described herein again.

It should be noted that, in the embodiment of the present application, the sending end of the wake-up signal needs to have a wake-up signal sending capability, and the receiving end of the wake-up signal must be equipped with a WUR interface to receive the wake-up signal. FIG. 4 is a specific product form of a transmitting device or a receiving device. The embodiment of the present application does not limit the specific product form of the sending device or the receiving device.

For convenience of description, the method for transmitting downlink control information provided by the embodiment of the present application is shown and described in detail in the following steps in conjunction with FIG. 1 to FIG.

It should be noted that, in the following embodiments of the present application, the name of each message or the name of each parameter in the message is only an example, and other names may be used in the specific implementation, which is not specifically limited in the embodiment of the present application.

First, it is assumed that the receiving device may receive the DCI of different sizes. The DCI size refers to the bit length of the content carried by the DCI. Therefore, in the embodiment of the present application, the DCI size may also be referred to as the length of the DCI. Here are two specific examples:

Example 1: It is assumed that the receiving device is specifically a terminal device, and the transmitting device is specifically a base station. The terminal device supports both URLLC and eMBB or mMTC. The DCI size of different service types may be different. For example, the URLLC corresponds to a compact DCI, and the eMBB corresponds to a general DCI. The sizes of the two DCIs are different. In this case, the terminal device may receive DCIs of different sizes, and the terminal device cannot determine in advance which size DCI the base station will transmit.

Example 2: It is assumed that the receiving device is specifically a terminal device, and the transmitting device is specifically a base station. The base station may transmit the terminal device-specific DCI to the terminal device, such as DCI for scheduling uplink or downlink transmission resources, or may also transmit G-DCI to the terminal device, such as G-DCI for TDD configuration. The terminal device-specific DCI and G-DCI are usually different in size, and the G-DCI has multiple formats of different sizes. In this case, the terminal device may receive DCIs of different sizes, and the terminal device cannot determine in advance which size DCI the base station will transmit.

Since the terminal device cannot determine in advance which DCI the base station will transmit, it can only perform blind detection on various possible DCI sizes on the PDCCH, resulting in higher power consumption of the terminal device. For example, for a battery-powered terminal device such as a mobile phone or a smart bracelet, this may seriously reduce the standby time of the device, thereby affecting the user experience.

To solve the problem, as shown in FIG. 6 , a method for transmitting downlink control information according to an embodiment of the present application, the method for transmitting the downlink control information includes the following steps:

S601. The sending device sends a first message to the first interface of the receiving device, where the first message carries the first indication information, where the first indication information is used to indicate the length of the one or more DCIs.

S602. The receiving device receives, by using the first interface, a first message sent by the sending device.

Optionally, in a possible implementation manner, the sending device may send the first message to the first interface of the receiving device by using the third interface of the sending device.

Or, in another possible implementation manner, the sending device may send the first message to the first interface of the receiving device by using the fourth interface of the sending device. In this case, the fourth interface of the transmitting device is the main communication interface, but at the same time, it has the sending capability of the wake-up signal.

For a description of the first interface, the third interface, or the fourth interface, reference may be made to the embodiment shown in FIG. 4, and details are not described herein again.

For a description of the sending device and the receiving device, reference may be made to the embodiment shown in FIG. 1 to FIG. 3, and details are not described herein again.

For example, the first message in the embodiment of the present application may be, for example, a DCI size indication (DSI) message, which is not specifically limited in this embodiment of the present application.

Optionally, the DSI message in the embodiment of the present application may be a specific DSI (specific DSI) message, that is, only sent to a specific receiving device; or the DSI message may be a multicast/multiple The group-specific DSI message or the group common DSI message is sent to a group of receiving devices, which is not specifically limited in this embodiment of the present application.

Optionally, in a possible implementation manner, the first indication information in the embodiment of the present application is characterized by a DCI length indication bit table, where the n-bit DCI length indication bit table is used to indicate the length of the n DCIs. , n is a positive integer.

Exemplarily, the first indication information included in the DSI message may be a DSI bit table, and each bit (bit) in the DSI bit table represents a length of a DCI, and the value 1/0 represents Send/do not send this length of DCI. For example, the DSI bit table is 8 bits, and each bit represents a DCI of size 18, 21, 27, 29, 36, 42, 54, 57 bits, respectively. When the DSI bit table in the DSI message sent by the sending device is 00101000, it indicates that the sending device is about to send a DCI with a length of 27 bits and 36 bits.

Optionally, in another possible implementation, the first indication information in the embodiment of the present application is characterized by one or more DCI length indication fields, where the m DCI length indication fields are used to indicate m DCIs. Length, m is a positive integer.

Exemplarily, the first indication information included in the DSI message may be multiple DSI fields, and the lengths of different DCIs are respectively indicated by multiple DSI fields. For example, the DSI message includes two DSI fields, DSI1 and DSI2, respectively, and each DSI field can indicate the length of one DCI.

Optionally, in another possible implementation manner, the first indication information in the embodiment of the present application is characterized by k bits, where the k bits are used to indicate a length less than or equal to 2 ^k DCIs. k is a positive integer.

Exemplarily, the first indication information included in the DSI message may be a DSI field, and the lengths of different DCIs are respectively indicated by one DSI field. For example, when the DSI field (abbreviated as DSI) is 1 bit, DSI=0 indicates that a DCI of 27 bits is to be transmitted, and DSI=1 indicates that a DCI of size 56 is about to be transmitted. Or, for example, the DSI field is 2 bits, DSI=0 indicates that the DCI with a length of 27 bits is about to be transmitted, DSI=1 indicates that the DCI with a length of 56 bits is about to be transmitted, and DSI=2 indicates that the DCI with a length of 36 bits is about to be transmitted, and DSI=3 indicates A DC of 72 bits in length will be sent. Or, for example, the DSI is 2 bits, DSI=0 indicates that the DCI with a length of 27 bits is about to be transmitted, DSI=1 indicates that the DCI with a length of 56 bits is about to be transmitted, and DSI=2 indicates that the DCI with a size of 27 bits and the DCI with a size of 56 bits are about to be transmitted. , DSI=3 retains or indicates that DCI is not sent.

Optionally, in the embodiment of the present application, when the first indication information indicates that the length of the first DCI is the first value, the first value indicates that the sending device does not send the first DCI. As in the above example, when the first indication information is characterized by the DSI bit table, each bit in the DSI bit table represents the length of one DCI, and its value 0 indicates that the DCI of the length is not transmitted. Or, as in the above example, when the first indication information is represented by k bits, if k=2, DSI=3 may indicate that the DCI is not transmitted.

It should be noted that, in the embodiment of the present application, the sending device does not send the DCI, and the transmitting device may be regarded as sending a DCI with a length of 0 bits, that is, not transmitting the DCI is a special case of transmitting DCIs of various lengths.

It should be noted that, in the embodiment of the present application, the first indication information is used to indicate the length of one or more DCIs, which may be that the sending device may send one or more DCIs, and the first indication information indicates the one or more The length of the DCI, wherein the length of one or more DCIs may be the same or different. Or, the first indication information is used to indicate the length of one or more DCIs, and may be that the sending device may send one or more DCIs of different lengths, where the first indication information is used to indicate the length of the DCIs of the types. Each of the DCIs may have one or more, for example, only one may be specified, which is not specifically limited in the embodiment of the present application.

S603. The receiving device wakes up the second interface of the receiving device according to the first message.

For a description of the second interface, refer to the embodiment shown in FIG. 4, and details are not described herein again.

It can be seen from the above step S601 that the transmission of the first indication information can bring the power consumption gain of the receiving device only when there are multiple DCI lengths. For a receiving device having only one DCI length, the reception of the first indication information may bring a negative gain. Therefore, the transmitting device should be allowed to activate and deactivate the mechanism in the embodiment of the present application. Therefore, in the embodiment of the present application, as shown in FIG. 6 , when the second interface is in the active state, before the step S601, the method for transmitting the downlink control information provided by the embodiment of the present application may further include the following step S604. And S605:

S604. The sending device sends an activation indication to the second interface in which the receiving device is in an active state, where the activation indication is used to instruct the receiving device to receive the first indication information by using the first interface before receiving the one or more DCIs.

Optionally, in the embodiment of the present application, the sending device may send the foregoing activation indication or the inactive indication to the second interface in which the receiving device is in the active state by using the fourth interface of the sending device, and the fourth interface of the sending device is the master. Communication Interface. Optionally, the fourth interface can have the sending capability of the wake-up signal at the same time, which is not specifically limited in this embodiment of the present application.

S605. The receiving device receives, by using the second interface, an activation indication sent by the sending device.

In this way, after receiving the activation indication sent by the sending device, the receiving device may receive the first indication information through the first interface according to the activation indication, and then perform subsequent operations. Otherwise, the receiving device may not need to receive the first indication information, but may detect the DCI directly in the PDCCH through the second interface after waking up the second interface, which is not specifically limited in this embodiment of the present application.

Alternatively, optionally, in the embodiment of the present application, the sending device may send a deactivation indication to the second interface in which the receiving device is in an active state, where the deactivation indication is used to indicate that the receiving device does not need to pass before receiving one or more DCIs. The first interface receives the first indication information. In this way, the sending device does not send the first indication information before sending the DCI, and the receiving device does not need to receive the first indication information, but can directly detect the DCI in the PDCCH, which is not specifically limited in this embodiment of the present application. Note that although the sending device does not send the first indication message before sending the DCI, the first message is still to be sent. At this time, the first message is used to instruct the receiving device to wake up its second interface to receive the DCI. The description will not be repeated below.

Optionally, in the embodiment of the present application, if the sending device is a base station and the receiving device is a terminal device, the base station may perform radio resource control (RRC) signaling or media access control (MAC). The control element signaling or the physical layer signaling sends an activation indication or a deactivation indication to the receiving device, which is not specifically limited in this embodiment.

After the receiving device wakes up the second interface of the receiving device according to the first message, the method for transmitting the downlink control information provided by the embodiment of the present application may further include the following steps:

S606. The sending device sends one or more DCIs to the second interface of the receiving device that is awake.

Optionally, the DCI in the embodiment of the present application may be a certain receiving device-specific DCI, that is, only sent to a specific receiving device; or the DCI may be a multicast/multicast specific DCI or group public. The DCI is sent to a group of receiving devices, which is not specifically limited in this embodiment.

It should be noted that, in the embodiment of the present application, when the first message is specifically a DSI message, the sending manner of the DSI message and the sending manner of the DCI are not completely consistent. That is, when the DSI message is a certain receiving device-specific DSI message, the subsequent DCI may be a certain receiving device-specific DCI, or may be a certain multicast/multicast specific DCI or a group common DCI; When the DSI message is a multicast/multicast specific DSI message or a group common DSI message, the subsequent DCI may be a certain receiving device specific DCI, or may be a certain multicast/multicast specific DCI or The public DCI of the group is not specifically limited in this embodiment.

S607. The receiving device receives, according to the first indication information, one or more DCIs sent by the sending device by using the second interface after the waking.

Optionally, in the embodiment of the present application, the receiving device may store the correspondence between the indication information of the length of one or more DCIs and the length of one or more DCIs, where the indication information of the length of one DCI is The length of the DCI corresponds. In this way, after acquiring the first indication information, the receiving device may determine the length of one or more DCIs according to the first indication information and the corresponding relationship.

Exemplarily, the DSI bit table is 8 bits, and each bit represents a DCI of size 18, 21, 27, 29, 36, 42, 54, 57 bits, and each bit takes a value of 1/0 to indicate that the corresponding transmission/non-transmission is corresponding. The length of the DCI. Then, when the DSI bit table in the DSI message sent by the sending device is 00101000, the receiving device can learn that the sending device is about to send DCI with a length of 27 bits and 36 bits according to the length of the DCI corresponding to each stored bit.

In the embodiment of the present application, the access device may obtain the correspondence between the indication information of the length of one or more DCIs and the length of one or more DCIs in the following manners:

The first method and the standard can pre-define the corresponding relationship, that is, the corresponding relationship can be pre-configured on the receiving device.

Manner 2: The corresponding relationship is configured by using a sending device. For example, when the sending device is a base station, the base station can be configured through RRC signaling or MAC CE signaling. Specifically, the base station may directly configure the length of the DCI corresponding to the indication information of the length of a certain DCI, and may also indirectly configure the indication of the length of a certain DCI by arranging whether some fields in the DCI exist and/or the length of the field. The length of the DCI corresponding to the information. For example, the DCI fixed in a certain format has a fixed field length of 16 bits, and the field 1 has a variable length of 4 or 8 bits, and the field 2 has a length of 3 bits, but may not exist. When the base station configuration field 1 has a length of 4 bits and the field 2 does not exist, the length of the DCI is 20 bits; when the base station configuration field 1 has a length of 8 bits and the field 2 exists, the length of the DCI is 27 bits.

Manner 3: The standard pre-defines the correspondence, but the correspondence can be modified by the sending device. For example, when the sending device is a base station, the base station may modify the correspondence by using RRC signaling or MAC CE signaling.

It should be noted that, in the embodiment of the present application, other descriptions may be adopted for the length of the DCI. For example, when the length of the DCI is related to the service type, the length of the DCI may be replaced by the service type, that is, the first indication information is used to indicate one or more service types, and the different service types correspond to the length of the specific DCI, such as DCI= 0 means URLLC, and DCI=1 means eMBB. Or, for example, the length of the DCI is often related to the DCI format, so the DCI length may be replaced by the DCI format, that is, the first indication information is used to indicate one or more DCI formats, and the different DCI formats correspond to a specific DCI size. Whether it is a service type or a DCI format, in essence, in order to make the receiving device know which DCI or which DCI should be detected, the power consumption of the receiving device to blindly check DCI of various possible sizes on the PDCCH is avoided. Based on this, the length of the DCI may be replaced by other names, as long as it is used to indicate the DCI to be sent.

In the method for transmitting downlink control information provided by the embodiment of the present application, when receiving the DCI, the receiving device may obtain the length of one or more DCIs in advance. That is, when receiving the DCI, the receiving device knows in advance which DCI the transmission device will send, and can directly detect the corresponding DCI on the PDCCH according to the length of the DCI, and does not need to be on the PDCCH as in the prior art. Blind detection of various possible sizes of DCI. Therefore, based on the method for transmitting downlink control information provided by the embodiment of the present application, the blind detection overhead of the receiving device can be reduced, thereby reducing the power consumption of the receiving device. Further, for a battery-powered receiving device, the standby time of the receiving device can be increased, thereby improving the user experience.

The action of the receiving device in the above steps S601 to S607 can be performed by the processor 201 in the receiving device 20 shown in FIG. 2 to call the application code stored in the memory 203, which is not limited in this embodiment.

The action of the sending device in the above steps S601 to S607 can be performed by the processor 301 in the sending device 30 shown in FIG. 3 to call the application code stored in the memory 303. This embodiment does not impose any limitation.

The solution provided by the embodiment of the present application is introduced from the perspective of the interaction between the receiving device and the sending device. It can be understood that, in order to implement the above functions, the above-mentioned transmitting device or receiving device includes a corresponding hardware structure and/or software module for executing each function. Those skilled in the art will readily appreciate that the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

The embodiment of the present application may divide the function module by the sending device or the receiving device according to the foregoing method example. For example, each function module may be divided according to each function, or two or more functions may be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.

For example, in the case of dividing each functional module in a manner that employs various functions, FIG. 7 shows a schematic structural diagram of a receiving device 70. The receiving device 70 includes a first receiving module 701, a second receiving module 703, and a waking module 702. The first receiving module 701 is configured to receive, by using the first interface of the receiving device 70, the first message sent by the sending device, where the first message carries first indication information, where the first indication information is used to indicate the length of one or more DCIs. . The wake-up module 702 is configured to wake up the second interface of the receiving device 70 according to the first message. The second receiving module 703 is configured to receive, according to the first indication information, one or more DCIs sent by the sending device by using the second interface after the waking.

Optionally, the second receiving module 703 is further configured to: when the first interface of the receiving device is in an active state, receive the activation indication sent by the sending device by using the second interface, before receiving, by the first interface, the first message sent by the sending device The activation indication is used to instruct the receiving device to receive the first indication information through the first interface before receiving the one or more DCIs.

Optionally, in a possible implementation manner, the first receiving module 701 is configured to receive, by using the first interface of the receiving device 70, the first message sent by the sending device, where the first receiving module 701 is configured to receive and send by using the first interface of the receiving device 70. The first message sent by the device through the third interface of the sending device.

The second receiving module 703 is configured to receive, by using the second interface after the waking, one or more DCIs sent by the sending device, where: the second interface that is used by the awake receives the one sent by the sending device by using the fourth interface of the sending device Multiple DCIs.

Optionally, in another possible implementation manner, the first receiving module 701 is configured to receive, by using the first interface of the receiving device 70, the first message sent by the sending device, where The first message sent by the device through the fourth interface of the sending device.

All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.

In the present embodiment, the receiving device 70 is presented in a form that divides each functional module in a manner that employs various functions. A "module" herein may refer to a particular ASIC, circuitry, processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other devices that provide the functionality described above. In a simple embodiment, those skilled in the art will appreciate that the receiving device 70 can take the form shown in FIG.

For example, the processor 201 in FIG. 2 can execute the instruction by calling the computer stored in the memory 203, so that the receiving device 70 performs the transmission method of the downlink control information in the foregoing method embodiment.

Specifically, the function/implementation process of the first receiving module 701, the second receiving module 703, and the waking module 702 in FIG. 7 can be implemented by the processor 201 in FIG. 2 calling a computer executing instruction stored in the memory 203. Alternatively, the function/implementation process of the first receiving module 701 in FIG. 7 can be implemented by the first interface 204 in FIG. 2, and the function/implementation process of the second receiving module 703 in FIG. The two interfaces 207 are implemented. The function/implementation process of the wake-up module 702 in FIG. 7 can be implemented by the processor 201 in FIG. 2 calling the computer execution instructions stored in the memory 203.

The receiving device 70 provided in this embodiment can perform the foregoing method for transmitting the downlink control information. Therefore, the technical effects that can be obtained can be referred to the foregoing method embodiments, and details are not described herein again.

Optionally, the embodiment of the present application further provides a chip system, where the chip system includes a processor, and is configured to support a receiving device to implement the foregoing method for transmitting downlink control information, for example, according to the first message, waking up the second interface of the receiving device. . In one possible design, the chip system also includes a memory. This memory is used to store the necessary program instructions and data for the receiving device. Of course, the memory may not be in the chip system. The chip system may be composed of a chip, and may also include a chip and other discrete devices. This embodiment of the present application does not specifically limit this.

Or, for example, in the case where the respective functional modules are divided in a manner of using respective functions, FIG. 8 shows a schematic structural diagram of a transmitting device 80. The transmitting device 80 includes a sending module 801. The sending module 801 is configured to send a first message to the first interface of the receiving device, where the first message carries the first indication information, where the first indication information is used to indicate the length of the one or more DCIs, where the first message is used to wake up The second interface of the receiving device. The sending module 801 is further configured to send one or more DCIs to the second interface of the receiving device that is awake.

Optionally, the sending module 801 is further configured to: before sending the first message to the first interface of the receiving device, send an activation indication to the second interface in which the receiving device is in an active state, where the activation indication is used to indicate that the receiving device is receiving one or The plurality of DCIs are previously received by the first interface of the receiving device.

Optionally, in a possible implementation manner, the sending module 801 is configured to send, by using the third interface of the sending device, the first message to the first interface of the receiving device, where Message.

The sending module 801 is configured to send one or more DCIs to the second interface of the receiving device that is awake, including:

And transmitting, by the fourth interface of the sending device, one or more DCIs to the second interface of the receiving device that is awake.

Optionally, in another possible implementation, the sending module 801 is configured to send, by using the fourth interface of the sending device, the first message to the first interface of the receiving device. A message.

In the present embodiment, the transmitting device 80 is presented in the form of dividing each functional module in a manner that employs various functions. A "module" herein may refer to a particular ASIC, circuitry, processor and memory that executes one or more software or firmware programs, integrated logic circuitry, and/or other devices that provide the functionality described above. In a simple embodiment, those skilled in the art will appreciate that the transmitting device 80 can take the form shown in FIG.

For example, the processor 301 in FIG. 3 can execute the instruction by calling the computer stored in the memory 303, so that the sending device 80 performs the transmission method of the downlink control information in the foregoing method embodiment.

Specifically, the function/implementation process of the sending module 801 in FIG. 8 can be implemented by the processor 301 in FIG. 3 calling a computer executing instruction stored in the memory 303. Alternatively, the function/implementation process of the transmitting module 801 in FIG. 8 can be implemented by the transmitter 304 in FIG. For example, the function/implementation process of the sending module 801 in FIG. 8 may be implemented by the fourth interface 304a in FIG. 3; or, for example, the function/implementation process of the sending module 801 in FIG. 8 may pass the The three interfaces 304b and the fourth interface 304a are implemented.

The transmission device 80 provided in this embodiment can perform the foregoing method for transmitting the downlink control information. Therefore, the technical effects that can be obtained can be referred to the foregoing method embodiments, and details are not described herein again.

Optionally, the embodiment of the present application further provides a chip system, where the chip system includes a processor, and is configured to support the sending device to implement the foregoing method for transmitting downlink control information, for example, acquiring first indication information. In one possible design, the chip system also includes a memory. This memory is used to store the necessary program instructions and data for the transmitting device. Of course, the memory may not be in the chip system. The chip system may be composed of a chip, and may also include a chip and other discrete devices. This embodiment of the present application does not specifically limit this.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be another division manner, for example, multiple modules or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The modules described as separate components may or may not be physically separate, and the components displayed as modules may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional module in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, network device or terminal device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

Alternatively, the functions may be implemented in whole or in part in the form of a computer program product if implemented in the form of a software functional unit and sold or used as a separate product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device that includes one or more servers, data centers, etc. that can be integrated with the media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)) or the like.

The relevant parts of the method embodiments of the present application may be referred to each other; the apparatus provided in each device embodiment is used to execute the method provided by the corresponding method embodiment, so each device embodiment may refer to related methods in the related method embodiments. Partial understanding.

The device structure diagrams given in the various device embodiments of the present application show only a simplified design of the corresponding device. In practical applications, the device may include any number of transmitters, receivers, processors, memories, etc., to implement the functions or operations performed by the device in the embodiments of the present application, and all devices that can implement the present application All are within the scope of this application.

The names of the message/frame/instruction information, modules, units, and the like provided in the embodiments of the present application are merely examples, and other names may be used as long as the functions of the message/frame/instruction information, the module or the unit, and the like are the same.

Although the present application has been described herein in connection with the various embodiments, those skilled in the art can Other variations of the disclosed embodiments are achieved. The terms used in the embodiments of the present application are for the purpose of describing the specific embodiments only, and are not intended to limit the invention. The singular forms "a", "the", "the" and "the" In addition, a single processor or other unit may implement several of the functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that the measures are not combined to produce a good effect.

Depending on the context, the words "if" or "if" as used herein may be interpreted as "when" or "when" or "in response to determining" or "in response to detecting." Similarly, depending on the context, the phrase "if determined" or "if detected (conditions or events stated)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event) "Time" or "in response to a test (condition or event stated)".

A person skilled in the art can understand that all or part of the steps of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a readable storage medium of a device, when the program is executed. Including all or part of the above steps, the storage medium, such as: FLASH, EEPROM, and the like.

The specific embodiments of the present invention have been described in detail, and the various embodiments may be combined. The above descriptions are only specific embodiments of the present application. It is not intended to limit the scope of the invention, and any combination, modification, equivalent substitution, modification, etc., which are within the spirit and scope of the invention, are intended to be included within the scope of the invention.

Claims

A method for transmitting downlink control information DCI, wherein the method includes:

The receiving device receives the first message sent by the sending device by using the first interface of the receiving device, where the first message carries the first indication information, where the first indication information is used to indicate the length of one or more DCIs;

The receiving device wakes up the second interface of the receiving device according to the first message;

Receiving, by the receiving device, the one or more DCIs sent by the sending device by using the second interface after the awake according to the first indication information.
The method according to claim 1, wherein when the second interface of the receiving device is in an active state, the receiving device receives the first one sent by the transmitting device by using the first interface of the receiving device Before the message, the method further includes:

Receiving, by the second interface, an activation indication sent by the sending device, where the activation indication is used to indicate that the receiving device receives the first interface by using the first interface before receiving the one or more DCIs. First indication information.
The method according to claim 1 or 2, wherein the receiving device receives the first message sent by the sending device by using the first interface of the receiving device, including:

Receiving, by the first interface of the receiving device, the first message sent by the sending device by using the third interface of the sending device;

Receiving, by the receiving device, the one or more DCIs sent by the sending device by using the second interface that is awake, including:

Receiving, by the second interface, the awake receiving, by the sending device, the one or more DCIs sent by the sending device by using a fourth interface of the sending device.
The method according to claim 1 or 2, wherein the receiving device receives the first message sent by the sending device by using the first interface of the receiving device, including:

Receiving, by the first interface of the receiving device, the first message sent by the sending device by using the fourth interface of the sending device;

Receiving, by the receiving device, the one or more DCIs sent by the sending device by using the second interface that is awake, including:

Receiving, by the second interface, the awake receiving, by the sending device, the one or more DCIs sent by the sending device by using the fourth interface of the sending device.
A method for transmitting downlink control information DCI, wherein the method includes:

The sending device sends a first message to the first interface of the receiving device, where the first message carries first indication information, where the first indication information is used to indicate a length of one or more DCIs, where the first message is used by Awakening the second interface of the receiving device;

Sending, by the sending device, the one or more DCIs to the second interface of the receiving device that is awake.
The method according to claim 5, wherein before the sending the first message to the first interface of the receiving device, the method further comprises:

Sending, by the sending device, an activation indication to a second interface in which the receiving device is in an active state, where the activation indication is used to indicate that the receiving device passes the first part of the receiving device before receiving the one or more DCIs An interface receives the first indication information.
The method according to claim 5 or 6, wherein the sending, by the sending device, the first message to the first interface of the receiving device comprises:

Transmitting, by the sending device, the first message to a first interface of the receiving device by using a third interface of the sending device;

Sending, by the sending device, the one or more DCIs to the second interface that is awake after the receiving device includes:

Transmitting, by the sending device, the one or more DCIs to the second interface of the receiving device that is awake through a fourth interface of the sending device.
The method according to claim 5 or 6, wherein the sending, by the sending device, the first message to the first interface of the receiving device comprises:

Transmitting, by the sending device, the first message to the first interface of the receiving device by using a fourth interface of the sending device;

Sending, by the sending device, the one or more DCIs to the second interface that is awake after the receiving device includes:

Transmitting, by the sending device, the one or more DCIs to the second interface of the receiving device that is awake through the fourth interface of the sending device.
The method according to claim 3 or 7, wherein the third interface is a wake-up radio interface, and the fourth interface is a main communication interface.
The method of claim 4 or 8, wherein the fourth interface is a primary communication interface.
The method according to any one of claims 1 to 10, wherein the first indication information is characterized by a DCI length indication bit table, wherein the n-bit DCI length indication bit table is used to indicate n DCIs. The length, n is a positive integer.
The method according to any one of claims 1 to 10, wherein the first indication information is characterized by one or more DCI length indication fields, wherein m DCI length indication fields are used to indicate m DCIs. The length, m is a positive integer.
The method according to any one of claims 1 to 10, wherein the first indication information is characterized by k bits, wherein k bits are used to indicate a length less than or equal to 2k DCIs, k is a positive integer.
The method according to any one of claims 1 to 13, wherein when the first indication information indicates that the length of the first DCI is the first value, the first value indicates that the sending device does not send the The first DCI is described.
The method according to any one of claims 1 to 14, wherein the first interface is a wake-up radio interface, and the second interface is a main communication interface.
The method according to any one of claims 1 to 15, wherein the receiving device comprises a terminal device.
The method according to any one of claims 1 to 16, wherein the transmitting device comprises a terminal device or an access device.
A receiving device, comprising: a first receiving module, a second receiving module, and a wake-up module;

The first receiving module is configured to receive, by using a first interface of the receiving device, a first message sent by a sending device, where the first message carries first indication information, where the first indication information is used to indicate one or more The length of the downlink control information DCI;

The waking module is configured to wake up the second interface of the receiving device according to the first message;

The second receiving module is configured to receive, according to the first indication information, the one or more DCIs sent by the sending device by using the second interface that is awake.
The receiving device according to claim 18, characterized in that

The second receiving module is further configured to receive, by the second interface, before the first interface receives the first message sent by the sending device, when the second interface of the receiving device is in an active state And an activation indication sent by the sending device, where the activation indication is used to indicate that the receiving device receives the first indication information by using the first interface before receiving the one or more DCIs.
The receiving device according to claim 18 or 19, wherein the first receiving module is configured to receive, by using the first interface of the receiving device, the first message sent by the sending device, including:

Receiving, by using the first interface of the receiving device, the first message sent by the sending device by using a third interface of the sending device;

The receiving, by the second receiving module, the one or more DCIs sent by the sending device by using the second interface after the waking, includes:

And the receiving, by using the second interface after the waking, the one or more DCIs sent by the sending device by using a fourth interface of the sending device.
The receiving device according to claim 18 or 19, wherein the first receiving module is configured to receive, by using the first interface of the receiving device, the first message sent by the sending device, including:

Receiving, by using the first interface of the receiving device, the first message sent by the sending device by using a fourth interface of the sending device;

The receiving, by the second receiving module, the one or more DCIs sent by the sending device by using the second interface after the waking, includes:

And the receiving, by using the second interface after the waking, the one or more DCIs sent by the sending device by using the fourth interface of the sending device.
A transmitting device, where the sending device includes: a sending module;

The sending module is configured to send a first message to the first interface of the receiving device, where the first message carries the first indication information, where the first indication information is used to indicate the length of the one or more downlink control information DCI, The first message is used to wake up the second interface of the receiving device;

The sending module is further configured to send the one or more DCIs to the second interface that is awake after the receiving device.
The transmitting device according to claim 22, characterized in that

The sending module is further configured to: before sending the first message to the first interface of the receiving device, send an activation indication to the second interface in which the receiving device is in an active state, where the activation indication is used to indicate that the receiving device is Receiving the first indication information by the first interface of the receiving device before receiving the one or more DCIs.
The transmitting device according to claim 22 or 23, wherein the sending module is configured to send the first message to the first interface of the receiving device, including:

Transmitting, by the third interface of the sending device, the first message to a first interface of the receiving device;

The sending module is configured to send the one or more DCIs to the second interface of the receiving device that is awake, including:

And transmitting, by the fourth interface of the sending device, the one or more DCIs to the second interface of the receiving device after being awake.
The transmitting device according to claim 22 or 23, wherein the sending module is configured to send the first message to the first interface of the receiving device, including:

Transmitting, by the fourth interface of the sending device, the first message to a first interface of the receiving device;

The sending module is configured to send the one or more DCIs to the second interface of the receiving device that is awake, including:

And transmitting, by the fourth interface of the sending device, the one or more DCIs to the second interface of the receiving device after being awake.
The receiving device according to claim 20 or the transmitting device according to claim 24, wherein the third interface is a wake-up radio frequency interface, and the fourth interface is a main communication interface.
The receiving device according to claim 21 or the transmitting device according to claim 25, wherein the fourth interface is a main communication interface.
The receiving device or the transmitting device according to any one of claims 18 to 27, wherein the first indication information is characterized by a DCI length indicating bit table, wherein an n-bit DCI length indicating bit table is used for Indicates the length of n DCIs, where n is a positive integer.
The receiving device or the transmitting device according to any one of claims 18 to 27, wherein the first indication information is characterized by one or more DCI length indication fields, wherein m DCI length indication fields are used for Indicates the length of m DCIs, where m is a positive integer.
The receiving device or the transmitting device according to any one of claims 18 to 27, wherein the first indication information is characterized by k bits, wherein k bits are used to indicate less than or equal to 2k The length of DCI, k is a positive integer.
The receiving device or the transmitting device according to any one of claims 18 to 30, wherein when the first indication information indicates that the length of the first DCI is the first value, the first value indicates the sending The device does not send the first DCI.
The receiving device or the transmitting device according to any one of claims 18 to 31, wherein the first interface is a wake-up radio frequency interface, and the second interface is a main communication interface.
The receiving device or transmitting device according to any one of claims 18 to 32, wherein the receiving device comprises a terminal device.
The receiving device or the transmitting device according to any one of claims 18 to 33, wherein the transmitting device comprises a terminal device or an access device.
A receiving device, comprising: a first interface, a second interface, and a processor;

The first interface is configured to receive a first message sent by the sending device, where the first message carries first indication information, where the first indication information is used to indicate a length of one or more downlink control information DCI;

The processor is configured to wake up the second interface of the receiving device according to the first message;

The second interface after the waking is used to receive the one or more DCIs sent by the sending device.
A receiving device according to claim 35, wherein

The second interface is further configured to receive, after the first interface receives the first message sent by the sending device, the activation indication sent by the sending device, where the activation indication is used to indicate the The receiving device receives the first indication information through the first interface of the receiving device before receiving the one or more DCIs.
The receiving device according to claim 35 or claim 36, wherein the receiving, by the first interface, the first message sent by the sending device comprises:

The first interface is configured to receive the first message sent by the sending device by using a third interface of the sending device;

The receiving, by the second interface, the one or more DCIs sent by the sending device by the second interface includes:

The second interface after the waking is used to receive the one or more DCIs sent by the sending device by using a fourth interface of the sending device.
The receiving device according to claim 35 or claim 36, wherein the receiving, by the first interface, the first message sent by the sending device comprises:

The first interface is configured to receive the first message sent by the sending device by using a fourth interface of the sending device;

The receiving, by the second interface, the one or more DCIs sent by the sending device by the second interface includes:

The second interface after the waking is used to receive the one or more DCIs sent by the sending device by using the fourth interface of the sending device.
A transmitting device, characterized in that the transmitting device comprises: a transmitter;

The transmitter is configured to send a first message to the first interface of the receiving device, where the first message carries first indication information, where the first indication information is used to indicate a length of one or more downlink control information DCI, The first message is used to wake up the second interface of the receiving device;

The transmitter is further configured to send the one or more DCIs to the second interface of the receiving device that is awake.
The transmitting device according to claim 39, characterized in that

The transmitter is further configured to: before sending the first message to the first interface of the receiving device, send an activation indication to the second interface in which the receiving device is in an active state, where the activation indication is used to indicate that the receiving device is Receiving the first indication information by the first interface of the receiving device before receiving the one or more DCIs.
The transmitting device according to claim 39 or 40, wherein the transmitter comprises a third interface and a fourth interface;

The transmitter is configured to send the first message to the first interface of the receiving device, including:

The transmitter is configured to send the first message to the first interface of the receiving device by using the third interface;

Sending, by the transmitter, the one or more DCIs to the second interface that is awake after the receiving device, including:

The transmitter is configured to send, by using the fourth interface, the one or more DCIs to the second interface of the receiving device that is awake.
The transmitting device according to claim 39 or 40, wherein the transmitter comprises a fourth interface;

The transmitter is configured to send the first message to the first interface of the receiving device, including:

The transmitter is configured to send the first message to the first interface of the receiving device by using the fourth interface;

Sending, by the transmitter, the one or more DCIs to the second interface that is awake after the receiving device, including:

The transmitter is configured to send, by using the fourth interface, the one or more DCIs to the second interface of the receiving device that is awake.
The receiving device according to claim 37 or the transmitting device according to claim 41, wherein the third interface is a wake-up radio frequency interface, and the fourth interface is a main communication interface.
The receiving device according to claim 38 or the transmitting device according to claim 42, wherein the fourth interface is a main communication interface.
The receiving device or transmitting device according to any one of claims 35 to 44, wherein the first indication information is characterized by a DCI length indicating bit table, wherein an n-bit DCI length indicating bit table is used for Indicates the length of n DCIs, where n is a positive integer.
The receiving device or the transmitting device according to any one of claims 35 to 44, wherein the first indication information is characterized by one or more DCI length indication fields, wherein m DCI length indication fields are used for Indicates the length of m DCIs, where m is a positive integer.
The receiving device or transmitting device according to any one of claims 35-44, wherein the first indication information is characterized by k bits, wherein k bits are used to indicate less than or equal to 2k The length of DCI, k is a positive integer.
The receiving device or the transmitting device according to any one of claims 35 to 47, wherein when the first indication information indicates that the length of the first DCI is the first value, the first value indicates the sending The device does not send the first DCI.
The receiving device or the transmitting device according to any one of claims 35 to 48, wherein the first interface is a wake-up radio frequency interface, and the second interface is a main communication interface.
A receiving device or transmitting device according to any one of claims 35-49, wherein the receiving device comprises a terminal device.
The receiving device or the transmitting device according to any one of claims 35 to 50, wherein the transmitting device comprises a terminal device or an access device.
A receiving device, comprising: a processor, a first interface, a second interface, and a memory;

The first interface and the second interface are used to communicate with an external device;

The memory is configured to store computer execution instructions, and when the receiving device is in operation, the processor executes the computer-executed instructions stored in the memory to cause the receiving device to perform the claims 1-4 or 9- A method of transmitting downlink control information DCI according to any one of 17.
A transmitting device, characterized in that the transmitting device comprises a processor, a transceiver and a memory;

Wherein the transceiver is configured to communicate with an external device;

The memory is configured to store a computer execution instruction, and when the transmitting device is in operation, the processor executes the computer-executed instruction stored in the memory to cause the transmitting device to perform the claim 5-8 or 9- A method of transmitting downlink control information DCI according to any one of 17.
A receiving device, characterized in that the receiving device is configured to perform a transmission method of downlink control information DCI according to any one of claims 1-4 or 9-17.
A transmitting device, characterized in that the transmitting device is configured to perform a transmission method of downlink control information DCI according to any one of claims 5-8 or 9-17.
A computer program product, comprising a computer program, wherein the computer program, when executed on a computer unit, causes the computer unit to implement any one of claims 1-4 or 9-17 The downlink control information DCI transmission method.
A computer program product comprising a computer program, wherein the computer program, when executed on a computer unit, causes the computer unit to implement any one of claims 5-8 or 9-17 The downlink control information DCI transmission method.
A computer program, characterized in that the computer program, when executed on a computer unit, causes the computer unit to implement downlink control information DCI according to any one of claims 1-4 or 9-17 Transmission method.
A computer program, characterized in that the computer program, when executed on a computer unit, causes the computer unit to implement downlink control information DCI as claimed in any one of claims 5-8 or 9-17 Transmission method.
A computer readable storage medium having stored thereon a computer program, wherein the computer program, when executed on a computer, causes the computer to implement any of claims 1-4 or 9-17 The transmission method of the downlink control information DCI described in the item.
A computer readable storage medium having stored thereon a computer program, wherein the computer program, when executed on a computer, causes the computer to implement any of claims 5-8 or 9-17 The transmission method of the downlink control information DCI described in the item.
A communication device, comprising: a processing module and a communication interface, wherein the processing module is configured to perform the transmission method of the downlink control information DCI according to any one of claims 1-4 or 9-17.
The communication device according to claim 62, wherein said communication device further comprises a storage module, said storage module is configured to store an instruction, said processing module is configured to execute an instruction stored by said storage module, and The execution of the instructions stored in the storage module causes the processing module to perform the transmission method of the downlink control information DCI according to any one of claims 1-4 or 9-17.
A communication device, comprising: a processing module and a communication interface, the processing module for performing a transmission method of downlink control information DCI according to any one of claims 5-8 or 9-17.
The chip according to the communication device of the present invention, wherein the communication device further comprises a storage module, the storage module is configured to store an instruction, and the processing module is configured to execute the instruction stored by the storage module, and The execution of the instructions stored in the storage module causes the processing module to perform the transmission method of the downlink control information DCI according to any one of claims 5-8 or 9-17.
A communication system, comprising: the receiving device according to any one of claims 18-21 or 26-34, or the receiving device according to any one of claims 35-38 or 43-51, or A receiving device according to claim 52, or a receiving device according to claim 54, or a computer program product according to claim 56, or a computer program according to claim 58, or, for example, The computer readable storage medium of claim 60, or the communication device of any of claims 62-63;

And a transmitting device according to any one of claims 22-25 or 26-34, or a transmitting device according to any one of claims 39-42 or 43-51, or as claimed in claim 53 The transmitting device, or the transmitting device according to claim 53, or the transmitting device according to claim 55, or the computer program product according to claim 57, or the method according to claim 59 A computer program, or a computer readable storage medium according to claim 61, or a communication device according to any of claims 64-65.
A communication device according to any of claims 62-66, wherein said communication device is a chip system.