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WO2019051953A1 - Procédé et dispositif de communication - Google Patents

Procédé et dispositif de communication Download PDF

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Publication number
WO2019051953A1
WO2019051953A1 PCT/CN2017/108721 CN2017108721W WO2019051953A1 WO 2019051953 A1 WO2019051953 A1 WO 2019051953A1 CN 2017108721 W CN2017108721 W CN 2017108721W WO 2019051953 A1 WO2019051953 A1 WO 2019051953A1
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WO
WIPO (PCT)
Prior art keywords
interface
communication device
ack
resource
communication
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/108721
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English (en)
Chinese (zh)
Inventor
杜振国
庄宏成
丁志明
韩云博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201780069621.7A priority Critical patent/CN109964511A/zh
Publication of WO2019051953A1 publication Critical patent/WO2019051953A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.
  • the 3GPP standards organization is discussing the introduction of low-power Wake-up Radio (WUR), also known as Wake-up Receiver (WUR), to reduce the power consumption of end devices.
  • WUR Wake-up Receiver
  • the signal that can be received and decoded by the WUR is called the wake-up signal.
  • the wake-up signal is, for example, a wake-up packet (Wakeup Packet), which is also called a wake-up frame.
  • WUR refers to a terminal device (such as a UE) that introduces a WUR interface (also called a main radio (such as LTE/NR, etc., also called a main module or a main communication module).
  • the main module is usually in the off state. Only when the trigger signal from the WUR module is received, the main module is activated, and then the terminal device communicates with the base station through the main module.
  • the base station may send a wake-up signal to the terminal device to wake up the terminal device (the WUR interface of the terminal device triggers the activation of the primary interface after receiving the wake-up signal), and then the base station sends the terminal interface to the terminal device.
  • the primary interface sends downstream data.
  • the base station sends a wake-up signal to the terminal device but does not successfully wake up the terminal device (for example, the terminal device does not correctly receive the wake-up signal)
  • the base station sends downlink data to the terminal device, which causes waste of resources.
  • the embodiment of the present invention provides a communication method and device, which are used to prevent a base station from blindly transmitting downlink data to a terminal device, thereby causing waste of resources.
  • the embodiment of the present application provides a communication method, where the first communication device includes a first interface and a second interface, where the second communication device includes a third interface and a fourth interface, where the first interface is used for The third interface is in communication, and the second interface is configured to communicate with the fourth interface;
  • the method includes:
  • the first communication device sends a wake-up signal to the second communication device through the first interface, where the wake-up signal is used to wake up the fourth interface of the second communication device;
  • the first communication device receives a wake up Acknowledge (WU-ACK) sent by the second communication device.
  • WU-ACK wake up Acknowledge
  • the first communication device determines that the second communication device has been successfully called after receiving the WU-ACK sent by the second communication device. Wake up, and then send the downlink data, avoiding the waste of resources caused by the blind communication of the downlink data by the first communication device.
  • the first communications device receives the WU-ACK sent by the second communications device, including:
  • the first communication device receives the WU-ACK sent by the second communication device by using the second interface.
  • the method further includes:
  • the first communication device transmits downlink data to the second communication device through the second interface.
  • the method further includes:
  • the first communication device sends a physical downlink control channel (PDCCH) to the second communication device by using the second interface, where the PDCCH is used to schedule transmission of the downlink data, where the PDCCH includes Time Advance (TA), which is obtained by the first communication device according to the WU-ACK.
  • PDCCH physical downlink control channel
  • TA Time Advance
  • the second communication device obtains the scheduling information and the TA of the downlink data from the PDCCH at the same time, which reduces the delay and signaling overhead of the TA acquisition process.
  • the method further includes:
  • the first communication device receives, by using the second interface, a data response message sent by the second communication device by using the TA, where the data response message is used to confirm whether the downlink data is successfully received.
  • the TA obtained by the second communication device from the PDCCH can be used for the data response message of the subsequent downlink data, which avoids the reliability of the uplink response transmission caused by using the inaccurate TA, and improves the reliability.
  • the first communications device receives the WU-ACK sent by the second communications device, including:
  • the first communication device receives the WU-ACK sent by the second communication device on a first resource.
  • the first resource is preset, or the first resource is configured by the first communication device to the second communication device.
  • the time offset is preset, or the time offset is configured by the first communication device to the second communication device.
  • the method before the first communication device sends the wake-up signal to the second communication device by using the first interface, the method further includes:
  • the first communication device receives the wake-up time sent by the second communication device by using the second interface; the wake-up time is that the second communication device enters the work from receiving the wake-up signal to the fourth interface The length of time required for the state;
  • the first communication device determines the TA according to the wake-up time.
  • the wake-up signal further includes: resource indication information, where the resource indication information is used to indicate a time domain location and/or a frequency domain location of the first resource.
  • the first resource is a Physical Random Access Channel (PRACH) resource, or a Grant-free resource, or a WU-ACK dedicated resource.
  • PRACH Physical Random Access Channel
  • Grant-free resource or a WU-ACK dedicated resource.
  • the first resource is a WU-ACK dedicated resource.
  • the method further includes:
  • the first communication device determines the identifier of the second communication device according to the first resource and a one-to-one correspondence between the first resource and the identifier of the second communication device.
  • the first resource that sends the WU-ACK has a one-to-one correspondence with the second communication device, so that when the first communication device receives a WU-ACK, it can determine which is the first resource according to the first resource that carries the WU-ACK.
  • the WU-ACK sent by the second communication device is a one-to-one correspondence with the second communication device, so that when the first communication device receives a WU-ACK, it can determine which is the first resource according to the first resource that carries the WU-ACK.
  • the WU-ACK sent by the second communication device is a one-to-one correspondence with the second communication device, so that when the first communication device receives a WU-ACK, it can determine which is the first resource according to the first resource that carries the WU-ACK.
  • the WU-ACK sent by the second communication device is a one-to-one correspondence with the second communication device, so that when the first communication device receives a WU-ACK, it can determine which is the first resource according to the first resource that
  • the WU-ACK includes a signal sequence, and the signal sequence has a one-to-one correspondence with the identifier of the second communication device;
  • the method further includes:
  • the first communication device determines an identifier of the second communication device according to the signal sequence and a one-to-one correspondence between the signal sequence and an identifier of the second communication device.
  • the WU-ACK includes a signal sequence, and the first resource, the signal sequence, and the identifier of the second communication device have a corresponding relationship;
  • the method further includes:
  • the first communication device determines an identifier of the second communication device according to the first resource, the signal sequence, and a correspondence between the signal sequence and the identifier of the second communication device.
  • the WU-ACK transmitted by the different second communication device corresponds to a different signal sequence, which enables the first communication device to determine which second communication device transmits the WU-ACK based on the received signal sequence of the WU-ACK. .
  • the method further includes:
  • the first communication device sends signal sequence indication information to the second communication device through the second interface, the indication information is used to indicate the signal sequence.
  • the communication mode of the first interface and the third interface is a first communication mode
  • the communication mode of the second interface and the fourth interface is a second communication mode
  • the first communication method is different from the second communication method.
  • the first interface and the third interface are wake-up radio interfaces
  • the second interface and the fourth interface are main communication interfaces.
  • the wake-up RF interface is used to receive the wake-up signal, which has low power consumption and is convenient for power saving; the main communication interface can be used for data communication after being woken up, and the transmission rate is also high.
  • first interface and the second interface are different physical interfaces, or the first interface and the second interface are integrated into the same physical interface;
  • the third interface and the fourth interface are different physical interfaces.
  • the embodiment of the present application provides a communication method, where the first communication device includes a first interface and a second interface, and the second communication device includes a third interface and a fourth interface, where the third interface is used for The first interface is in communication, and the fourth interface is configured to communicate with the second interface;
  • the second communication device receives the wake-up signal sent by the first communication device by using the third interface, where the wake-up signal is used to wake up the fourth interface of the second communication device;
  • the second communication device wakes up the fourth interface of the second pass device according to the wake-up signal
  • the second communication device sends a call WU-ACK to the first communication device.
  • the first communication device determines that the second communication device has been successfully awake, and then transmits the downlink data, thereby avoiding waste of resources caused by the blind communication of the downlink data by the first communication device.
  • the WU-ACK sent by the second communications device to the first communications device includes:
  • the second communication device transmits the WU-ACK to the first communication device through the fourth interface.
  • it also includes:
  • the second communication device receives, by using the fourth interface, downlink data that is sent by the first communications device according to the WU-ACK.
  • the method further includes:
  • the second communication device receives the PDCCH sent by the first communications device by using the fourth interface, where the PDCCH is used to schedule transmission of the downlink data, the PDCCH includes a TA, and the TA is the second The communication device is obtained according to the WU-ACK.
  • the second communication device obtains the scheduling information and the TA of the downlink data from the PDCCH at the same time, which reduces the delay and signaling overhead of the TA acquisition process.
  • the method further includes:
  • the second communication device uses the TA to send a data response message to the first communication device through the fourth interface, where the data response message is used to confirm whether the downlink data is successfully received.
  • the TA obtained by the second communication device from the PDCCH can be used for the data response message of the subsequent downlink data, which avoids the reliability of the uplink response transmission caused by using the inaccurate TA, and improves the reliability.
  • the second communications device sends a WU-ACK to the first communications device by using the third interface, including:
  • the second communication device transmits the WU-ACK to the first communication device on the first resource through the third interface.
  • the first resource is preset, or the first resource is configured by the first communication device to the second communication device.
  • the time offset is preset, or the time offset is configured by the first communication device to the second communication device.
  • the method before the second communication device receives the wake-up signal sent by the first communications device by using the third interface, the method further includes:
  • the second communication device sends a wake-up time to the first communication device through the fourth interface; the wake-up time is that the second communication device enters a working state from receiving the wake-up signal to the fourth interface The length of time required;
  • the wake-up time is for the first communication device to determine the TA.
  • the wake-up signal further includes: resource indication information, where the resource indication information is used to indicate a time domain location and/or a frequency domain location of the first resource.
  • the first resource is a PRACH resource, or an unlicensed resource, or a WU-ACK dedicated resource.
  • the first resource that sends the WU-ACK has a one-to-one correspondence with the second communication device, so that when the first communication device receives a WU-ACK, it can determine which is the first resource according to the first resource that carries the WU-ACK.
  • the WU-ACK sent by the second communication device is a one-to-one correspondence with the second communication device, so that when the first communication device receives a WU-ACK, it can determine which is the first resource according to the first resource that carries the WU-ACK.
  • the WU-ACK sent by the second communication device is a one-to-one correspondence with the second communication device, so that when the first communication device receives a WU-ACK, it can determine which is the first resource according to the first resource that carries the WU-ACK.
  • the WU-ACK sent by the second communication device is a one-to-one correspondence with the second communication device, so that when the first communication device receives a WU-ACK, it can determine which is the first resource according to the first resource that
  • the WU-ACK includes a signal sequence, and the signal sequence has a one-to-one correspondence with the identifier of the second communication device.
  • the WU-ACK transmitted by the different second communication device corresponds to a different signal sequence, which enables the first communication device to determine which second communication device transmits the WU-ACK based on the received signal sequence of the WU-ACK. .
  • the WU-ACK includes a signal sequence, and the first resource, the signal sequence, and the identifier of the second communication device have a corresponding relationship.
  • the method further includes:
  • the second communication device receives, by using the fourth interface, the first communication device to send the signal sequence indication information, where the indication information is used to indicate the signal sequence.
  • the communication mode of the first interface and the third interface is a first communication mode
  • the communication mode of the second interface and the fourth interface is a second communication mode
  • the first communication method is different from the second communication method.
  • the first interface and the third interface are wake-up radio interfaces
  • the second interface and the fourth interface are main communication interfaces.
  • first interface and the second interface are different physical interfaces, or the first interface and the second interface are integrated into the same physical interface;
  • the third interface and the fourth interface are different physical interfaces.
  • the embodiment of the present application provides a communication device, as a first communication device, including: a memory, a processor, a first interface, and a second interface; wherein the first interface is used by the second communication device a third interface for communicating with the fourth interface of the second communication device;
  • the memory is configured to store an instruction
  • the processor is configured to execute the instructions in the memory, and perform the method according to the first aspect of the present application.
  • the second interface is integrated with the first interface as a same transceiver;
  • the first interface is a different physical component, and the first interface is a transmitter, and the second interface is a transceiver.
  • the embodiment of the present application provides a communication device, as a second communication device, including: a memory, a processor, a third interface, and a fourth interface; wherein the third interface is used for the first communication device a first interface for communicating with the second interface of the first communication device;
  • the memory is configured to store an instruction
  • the processor is configured to execute the instructions in the memory, and perform the method according to the second aspect of the present application.
  • the third interface and the fourth interface are different physical components, the third interface is a receiver, and the fourth interface is a transceiver.
  • the embodiment of the present application provides a computer program product, including a computer program, when the computer program is executed on a computer unit, the computer unit is configured to implement the communication method according to the first aspect of the present application. .
  • the embodiment of the present application provides a computer program product, including a computer program, when the computer program is executed on a computer unit, the computer unit is configured to implement the communication method according to the second aspect of the present application. .
  • the embodiment of the present application provides a communication device, as a first communication device, configured to perform the communication method according to the first aspect of the present application.
  • the embodiment of the present application provides a communication device, as a second communication device, configured to perform the second aspect.
  • the communication method described in the embodiment of the present application is not limited to:
  • the embodiment of the present application provides a chip, including: a processing module, a first interface, and a second interface; and the processing module is configured to execute the communication method in the first aspect of the present application.
  • the chip further includes a storage module, the storage module is configured to store program instructions, the processing module is configured to execute the program instructions stored in the memory, and the program stored in the memory The execution of the instructions causes the processing module to perform the communication method described in the second aspect of the present application.
  • the second interface is integrated with the first interface as the same communication interface; or the first interface and the second interface are different communication interfaces.
  • the embodiment of the present application provides a chip, including: a processing module, a third interface, and a fourth interface; and the processing module is configured to perform the communication method according to the second aspect of the present application.
  • the chip further includes a storage module, the storage module is configured to store program instructions, the processing module is configured to execute the program instructions stored in the memory, and the program stored in the memory The execution of the instructions causes the processing module to perform the communication method described in the second aspect of the present application.
  • the third interface and the fourth interface are different communication interfaces.
  • the embodiment of the present application provides a computer readable storage medium, where a computer program is stored thereon, and when the computer program is executed on a computer, the computer is implemented to implement the first aspect of the present application.
  • the embodiment of the present application provides a computer readable storage medium, where a computer program is stored, and when the computer program is executed on a computer, the computer is implemented to implement the second aspect of the present application.
  • a method for synchronizing uplink transmission the method being applied to a network device and a 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, where the An interface and the third interface communicate by using a first communication manner, and the second interface and the fourth interface communicate by using a second communication manner;
  • the method includes:
  • the network device sends a wake-up frame to the third interface of the terminal device by using the first interface, so that the terminal device wakes up the fourth interface;
  • the network device sends a PDCCH to the fourth interface of the terminal device by using a second interface, where the PDCCH is used to schedule transmission of DL data of the terminal device, where the PDCCH includes a timing advance TA, and the TA is The network device is measured based on the wakeup acknowledgement message.
  • the UE After the UE configured with the WUR is awake by the base station, the UE obtains the DL data scheduling information and the TA from the PDCCH at the same time, which reduces the delay and signaling overhead of the TA acquisition process. On the other hand, after receiving the WU-ACK of the UE, the base station determines that the UE has been successfully awake, and then transmits downlink (DL) data, thereby avoiding waste of resources caused by the base station blindly transmitting DL data.
  • DL downlink
  • the method after the network device sends the PDCCH to the fourth interface of the terminal device by using the second interface, the method includes:
  • the network device receives, by using the second interface, a data response message sent by the terminal device through the fourth interface, where the data response message is used to confirm the DL data, and the data response message is transmitted by using the TA.
  • the TA obtained by the UE from the PDCCH can be used for the UL response of the subsequent DL data, avoiding the reliability reduction of the UL response transmission caused by using the inaccurate TA.
  • the UE can only send the WU-ACK through the primary communication interface. If the WUR interface supports the sending capability, the WU-ACK can also be sent through the WUR interface.
  • the network device receiving the WU-ACK sent by the terminal device including:
  • the network device Receiving, by the network device, the WU-ACK sent by the terminal device on a first resource, where the first resource is a standard predefined, or the first resource is configured by the network device to the terminal device .
  • the transmission resource used by the UE to transmit the WU-ACK may be standard pre-defined or configured by the base station to the UE.
  • a time domain position of the first resource is a time offset from a time domain position of the wake-up frame, where
  • the T is a standard pre-defined, or the T is the network device configured to the terminal device.
  • the UE may also be a fixed time offset T between receiving the wake-up frame and transmitting the corresponding WU-ACK in the present application.
  • T can be standard pre-defined or base station configured.
  • the network device before the network device configures the T for the terminal device, the network device receives a wake-up time reported by the terminal device, and the network device is based on the wake-up time. Determining the T, the wake-up time is a time required by the terminal device to enter the working state from receiving the wake-up frame to the fourth interface.
  • the wake-up times of different UEs may be different.
  • the UE may report its wake-up time to the base station, so that the base station determines the T value of the UE based on the information.
  • the longer the wake-up time of the UE the larger the corresponding T value, because the UE needs to spend more time to wake up its own main communication interface.
  • the network device receives the WU-ACK sent by the terminal device on a first resource, where the first resource is indicated by the network device in the illustrated wake-up frame.
  • the base station may indicate a transmission resource of the corresponding WU-ACK, that is, the first resource, in the wake-up frame.
  • the information included in the awake frame may be a time domain and/or a frequency domain resource allocation of the first resource, or may be a resource index of the first resource, or the foregoing T value corresponding to the first resource.
  • the first resource is a PRACH resource, or a Grant-free resource, or a WU-ACK dedicated resource.
  • the resource for transmitting the WU-ACK may be a PRACH resource or a Grant-free resource resource, or may be a dedicated resource specially designed for the WU-ACK, that is, a WACH resource.
  • the network device receives the WU-ACK sent by the terminal device on a first resource, where the first resource has a one-to-one correspondence with the terminal device.
  • the transmission resource that sends the WU-ACK has a one-to-one correspondence with the UE, so that when receiving a WU-ACK, the base station can determine which UE sends the WU-ACK according to the resource that carries the WU-ACK. Based on this, the base station can determine that the corresponding UE has been successfully awake, and can send DL data to the UE. This avoids the waste of resources caused by the base station blindly transmitting DL data without determining whether the UE is successfully awake.
  • the network device receives the WU-ACK sent by the terminal device, where the WU-ACK includes a signal sequence, and the signal sequence has a one-to-one correspondence with the terminal device.
  • the WU-ACK transmitted by different UEs corresponds to different orthogonal signal sequences, which enables the base station to determine which UE transmits the WU-ACK based on the received signal sequence of the WU-ACK. Based on this, the base station can determine that the corresponding UE has been successfully awake, and can send DL data to the UE. This avoids the waste of resources caused by the base station blindly transmitting DL data without determining whether the UE is successfully awake.
  • the method in this embodiment may enable multiple UEs to multiplex the same time-frequency resource to transmit a WU-ACK signal, that is, distinguish the UE by using a code division method, which is beneficial to save transmission resources. Since the right item refers to the previous weight, different UEs having different WU-ACK signal sequences may also be combined with the first resource. In other words, the base station may distinguish the UE based on the first resource and the WU-ACK signal sequence.
  • the network device configures the signal sequence to the terminal device.
  • Different UEs have different WU-ACK signal sequences, so the base station must configure corresponding orthogonal sequences for the UE through signaling.
  • the network device after the network device receives the WU-ACK sent by the terminal device, the network device is based on the first resource and the terminal device Corresponding relationship, or determining the terminal device based on a correspondence between the signal sequence and the terminal device.
  • the base station must be able to determine the transmitting UE based on the received WU-ACK to determine which UE to transmit DL data to. For the UE to bind the WU-ACK transmission resource, the base station determines the corresponding UE based on the transmission resource where the received WU-ACK is located; and for the UE to bind the orthogonal sequence, the base station includes the positive based on the received WU-ACK. The signal sequence is handed over to determine the corresponding UE.
  • the network device After the network device receives the WU-ACK sent by the terminal device, the network device is based on the first resource, and the signal sequence Determining the terminal device in correspondence with the terminal device.
  • the base station determines the corresponding UE based on the transmission resource in which the received WU-ACK is located and the orthogonal sequence included in the WU-ACK.
  • the third interface of the UE is WUR, and the fourth interface is the main communication interface.
  • the former is used to receive the wake-up signal, and the power consumption is low, which is convenient for the UE to save power; the latter can be used for data communication after being woken up, and the power consumption is high, but the transmission rate is also high.
  • a method for synchronizing uplink transmission the method being applied to a network device and a 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, where the An interface and the third interface communicate by using a first communication manner, and the second interface and the fourth interface communicate by using a second communication manner;
  • the method includes:
  • the terminal device wakes up the fourth interface based on the wake-up frame
  • the PDCCH that is sent by the network device by using the second interface, where the PDCCH is used for scheduling transmission of DL data of the terminal device, where the PDCCH includes a timing advance TA, and the TA is The network device is measured based on the wake up confirmation message.
  • the UE After the UE configured with the WUR is awake by the base station, the UE obtains the DL data scheduling information and the TA from the PDCCH at the same time, which reduces the delay and signaling overhead of the TA acquisition process. On the other hand, after receiving the wake-up frame, the UE sends a WU-ACK to the base station, so that the base station determines that the UE has been successfully awake based on the WU-ACK, and then the base station sends the DL data again, thereby avoiding resource waste caused by the base station blindly transmitting the DL data. .
  • the method after the terminal device receives the PDCCH sent by the network device by using the second interface, by using the fourth interface, the method includes:
  • the terminal device sends a data response message to the fourth interface of the network device by using the fourth interface, where the data response message is used to confirm the DL data, and the data response message is transmitted by using the TA.
  • the TA obtained by the UE from the PDCCH can be used for the UL response of the subsequent DL data, avoiding the reliability reduction of the UL response transmission caused by using the inaccurate TA.
  • the terminal device sends the WU-ACK to the first interface of the network device by using the third interface, or the terminal device sends the WU-ACK to the second interface of the terminal device by using the fourth interface.
  • the UE can only send the WU-ACK through the primary communication interface. If the WUR interface supports the sending capability, the WU-ACK can also be sent through the WUR interface.
  • the terminal device sends the WU-ACK to the network device on the first resource, where the first resource is a standard pre-defined, or the first resource is configured by the network device to the terminal device.
  • the transmission resource used by the UE to transmit the WU-ACK may be standard pre-defined or configured by the base station to the UE.
  • a time domain position of the first resource is a time offset from a time domain position of the wake-up frame, where T is standard pre-defined, or the T is the network device configured to the terminal device.
  • the UE may also be a fixed time offset T between receiving the wake-up frame and transmitting the corresponding WU-ACK in the present application.
  • T can be standard pre-defined or base station configured.
  • the terminal device reports a wake-up time to the network device, so that the network device is based on the wake-up time.
  • the wake-up time is a time required by the terminal device to enter the working state from receiving the wake-up frame to the fourth interface.
  • the wake-up times of different UEs may be different.
  • the UE may report its wake-up time to the base station, so that the base station determines the T value of the UE based on the information.
  • the longer the wake-up time of the UE the larger the corresponding T value, because the UE needs to spend more time to wake up its own main communication interface.
  • the terminal device sends the WU-ACK to the network device on a first resource, where the first resource is indicated by the network device in the illustrated wake-up frame.
  • the base station may indicate a transmission resource of the corresponding WU-ACK, that is, the first resource, in the wake-up frame.
  • the information included in the awake frame may be a time domain and/or a frequency domain resource allocation of the first resource, or may be a resource index of the first resource, or the foregoing T value corresponding to the first resource.
  • the first resource is a PRACH resource, or a Grant-free resource, or a WU-ACK dedicated resource.
  • the resource for transmitting the WU-ACK may be a PRACH resource or a Grant-free resource resource, or may be a dedicated resource specially designed for the WU-ACK, that is, a WACH resource.
  • the terminal device sends the WU-ACK to the network device on a first resource, where the first resource has a one-to-one correspondence with the terminal device.
  • the transmission resource that sends the WU-ACK has a one-to-one correspondence with the UE, so that when receiving a WU-ACK, the base station can determine which UE sends the WU-ACK according to the resource that carries the WU-ACK. Based on this, the base station can determine that the corresponding UE has been successfully awake, and can send DL data to the UE. This avoids the waste of resources caused by the base station blindly transmitting DL data without determining whether the UE is successfully awake.
  • the terminal device sends the WU-ACK to the network device, where the WU-ACK includes a signal sequence, and the signal sequence has a one-to-one correspondence with the terminal device.
  • the WU-ACK transmitted by different UEs corresponds to different orthogonal signal sequences, which enables the base station to determine which UE transmits the WU-ACK based on the received signal sequence of the WU-ACK. Based on this, the base station can determine that the corresponding UE has been successfully awake, and can send DL data to the UE. This avoids the waste of resources caused by the base station blindly transmitting DL data without determining whether the UE is successfully awake.
  • the method in this embodiment may enable multiple UEs to multiplex the same time-frequency resource to transmit a WU-ACK signal, that is, distinguish the UE by using a code division method, which is beneficial to save transmission resources. Since the right item refers to the previous weight, different UEs having different WU-ACK signal sequences may also be combined with the first resource. In other words, the base station may distinguish the UE based on the first resource and the WU-ACK signal sequence.
  • the terminal device before the terminal device sends the WU-ACK to the network device, the terminal device receives the signal sequence configured by the network device.
  • Different UEs have different WU-ACK signal sequences, so the base station must configure corresponding orthogonal sequences for the UE through signaling.
  • the third interface of the UE is WUR, and the fourth interface is the main communication interface.
  • the former is used to receive the wake-up signal, and the power consumption is low, which is convenient for the UE to save power; the latter can be used for data communication after being woken up, and the power consumption is high, but the transmission rate is also high.
  • a network device comprising:
  • the transceiver is configured to receive and send data
  • the memory is configured to store an instruction
  • the processor configured to execute the instructions in the memory, perform the method of any of embodiments 1-14.
  • the transceiver comprising:
  • the transmitter is configured to send the wake-up frame according to any one of Embodiments 1-14, the DL data or the PDCCH;
  • the receiver is configured to receive the WU-ACK and the data response message as described in any of Embodiments 1-14.
  • a terminal device comprising:
  • a processor a memory, a transceiver, and a receiver, the transceiver being in an off state, the receiver being in an active state or an intermittent activation state;
  • the transceiver is configured to receive and send data
  • the memory is for storing instructions
  • the processor is operative to execute the instructions in the memory, performing the method of any of embodiments 15-26.
  • the terminal device of embodiment 30 or 31, the transceiver comprising:
  • the transmitter is configured to send the WU-ACK and the data response message as described in any one of Embodiments 15-26;
  • the receiver is configured to receive the PDCCH and the DL data as described in any of Embodiments 15-26.
  • a method for synchronizing uplink transmission the method being applied to a network device and a 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, where the An interface and the third interface communicate by using a first communication manner, and the second interface and the fourth interface communicate by using a second communication manner;
  • the method includes:
  • the network device sends a wake-up frame to the third interface of the terminal device by using the first interface, so that the terminal device wakes up the fourth interface;
  • the network device receives a WU-ACK sent by the terminal device.
  • the base station After receiving the WU-ACK of the UE, the base station determines that the UE has been successfully awake, and then transmits the DL data, thereby avoiding waste of resources caused by the base station blindly transmitting the DL data.
  • the receiving, by the network device, the WU-ACK sent by the terminal device including:
  • the UE can only send the WU-ACK through the primary communication interface. If the WUR interface supports the sending capability, the WU-ACK can also be sent through the WUR interface.
  • the receiving, by the network device, the WU-ACK sent by the terminal device including:
  • the network device Receiving, by the network device, the WU-ACK sent by the terminal device on a first resource, where the first resource is a standard predefined, or the first resource is configured by the network device to the terminal device .
  • the transmission resource used by the UE to transmit the WU-ACK may be standard pre-defined or configured by the base station to the UE.
  • a time domain position of the first resource is a time offset from a time domain position of the wake-up frame, where T is a standard predefined, or the T is the
  • the network device is configured to the terminal device.
  • the UE may also be a fixed time offset T between receiving the wake-up frame and transmitting the corresponding WU-ACK in the present application.
  • T can be standard pre-defined or base station configured.
  • the network device before the network device configures the T for the terminal device, the network device receives a wake-up time reported by the terminal device, and the network device is based on the wake-up time. Determining the T, the wake-up time is a time required by the terminal device to enter the working state from receiving the wake-up frame to the fourth interface.
  • the wake-up times of different UEs may be different.
  • the UE may report its wake-up time to the base station, so that the base station determines the T value of the UE based on the information.
  • the longer the wake-up time of the UE the larger the corresponding T value, because the UE needs to spend more time to wake up its own main communication interface.
  • the network device receives the WU-ACK sent by the terminal device on a first resource, where the first resource is indicated by the network device in the illustrated wake-up frame.
  • the base station may indicate a transmission resource of the corresponding WU-ACK, that is, the first resource, in the wake-up frame.
  • the information included in the awake frame may be a time domain and/or a frequency domain resource allocation of the first resource, or may be a resource index of the first resource, or the foregoing T value corresponding to the first resource.
  • the first resource is a PRACH resource, or a Grant-free resource, or a WU-ACK dedicated resource.
  • the resource for transmitting the WU-ACK may be a PRACH resource or a Grant-free resource resource, or may be a dedicated resource specially designed for the WU-ACK, that is, a WACH resource.
  • the network device receives the WU-ACK sent by the terminal device on a first resource, where the first resource has a one-to-one correspondence with the terminal device.
  • the transmission resource that sends the WU-ACK has a one-to-one correspondence with the UE, so that when receiving a WU-ACK, the base station can determine which UE sends the WU-ACK according to the resource that carries the WU-ACK. Based on this, the base station can determine that the corresponding UE has been successfully awake, and can send DL data to the UE. This avoids the waste of resources caused by the base station blindly transmitting DL data without determining whether the UE is successfully awake.
  • the network device receives the WU-ACK sent by the terminal device, where the WU-ACK includes a signal sequence, and the signal sequence has a one-to-one correspondence with the terminal device.
  • the WU-ACK transmitted by different UEs corresponds to different orthogonal signal sequences, which enables the base station to determine which UE transmits the WU-ACK based on the received signal sequence of the WU-ACK. Based on this, the base station can determine that the corresponding UE has been successfully awake, and can send DL data to the UE. This avoids the waste of resources caused by the base station blindly transmitting DL data without determining whether the UE is successfully awake.
  • the method in this embodiment may enable multiple UEs to multiplex the same time-frequency resource to transmit a WU-ACK signal, that is, distinguish the UE by using a code division method, which is beneficial to save transmission resources. Since the right item refers to the previous weight, different UEs having different WU-ACK signal sequences may also be combined with the first resource, in other words. Said that the base station can distinguish the UE based on the first resource and the WU-ACK signal sequence.
  • the network device configures the signal sequence to the terminal device.
  • Different UEs have different WU-ACK signal sequences, so the base station must configure corresponding orthogonal sequences for the UE through signaling.
  • the network device after the network device receives the WU-ACK sent by the terminal device, the network device is based on the first resource and the terminal device Corresponding relationship, or determining the terminal device based on a correspondence between the signal sequence and the terminal device.
  • the base station must be able to determine the transmitting UE based on the received WU-ACK to determine which UE to transmit DL data to. For the UE to bind the WU-ACK transmission resource, the base station determines the corresponding UE based on the transmission resource where the received WU-ACK is located; and for the UE to bind the orthogonal sequence, the base station includes the positive based on the received WU-ACK. The signal sequence is handed over to determine the corresponding UE.
  • the network device after the network device receives the WU-ACK sent by the terminal device, the network device is based on the first resource, and the signal sequence Determining the terminal device in correspondence with the terminal device.
  • the base station determines the corresponding UE based on the transmission resource in which the received WU-ACK is located and the orthogonal sequence included in the WU-ACK.
  • the third interface of the UE is WUR, and the fourth interface is the main communication interface.
  • the former is used to receive the wake-up signal, and the power consumption is low, which is convenient for the UE to save power; the latter can be used for data communication after being woken up, and the power consumption is high, but the transmission rate is also high.
  • a method for synchronizing uplink transmission the method being applied to a network device and a 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, where the An interface and the third interface communicate by using a first communication manner, and the second interface and the fourth interface communicate by using a second communication manner;
  • the method includes:
  • the terminal device wakes up the fourth interface based on the wake-up frame
  • the terminal device sends a WU-ACK to the network device.
  • the UE After receiving the wake-up frame, the UE sends a WU-ACK to the base station, so that the base station determines that the UE has been successfully awake based on the WU-ACK, and then the base station sends the DL data again, thereby avoiding waste of resources caused by the base station blindly transmitting the DL data.
  • the terminal device sends a WU-ACK to the network device, including:
  • the terminal device sends the WU-ACK to the first interface of the network device by using the third interface, or the terminal device sends the WU-ACK to the second interface of the terminal device by using the fourth interface.
  • the UE can only send the WU-ACK through the primary communication interface. If the WUR interface supports the sending capability, the WU-ACK can also be sent through the WUR interface.
  • the terminal device sends the WU-ACK to the network device on the first resource, where the first resource is a standard pre-defined, or the first resource is configured by the network device to the terminal device.
  • the transmission resource used by the UE to transmit the WU-ACK may be standard pre-defined or configured by the base station to the UE.
  • the terminal device sends a WU-ACK to the network device, including:
  • a time domain position of the first resource is a time offset from a time domain position of the wake-up frame, where T is standard pre-defined, or the T is the network device configured to the terminal device.
  • the UE may also be a fixed time offset T between receiving the wake-up frame and transmitting the corresponding WU-ACK in the present application.
  • T can be standard pre-defined or base station configured.
  • the terminal device reports a wake-up time to the network device, so that the network device is based on the wake-up time.
  • the wake-up time is a time required by the terminal device to enter the working state from receiving the wake-up frame to the fourth interface.
  • the wake-up times of different UEs may be different.
  • the UE may report its wake-up time to the base station, so that the base station determines the T value of the UE based on the information.
  • the longer the wake-up time of the UE the larger the corresponding T value, because the UE needs to spend more time to wake up its own main communication interface.
  • the terminal device sends the WU-ACK to the network device on a first resource, where the first resource is indicated by the network device in the illustrated wake-up frame.
  • the base station may indicate a transmission resource of the corresponding WU-ACK, that is, the first resource, in the wake-up frame.
  • the information included in the awake frame may be a time domain and/or a frequency domain resource allocation of the first resource, or may be a resource index of the first resource, or the foregoing T value corresponding to the first resource.
  • the first resource is a PRACH resource, or a Grant-free resource, or a WU-ACK dedicated resource.
  • the resource for transmitting the WU-ACK may be a PRACH resource or a Grant-free resource resource, or may be a dedicated resource specially designed for the WU-ACK, that is, a WACH resource.
  • the terminal device sends the WU-ACK to the network device on a first resource, where the first resource has a one-to-one correspondence with the terminal device.
  • the transmission resource that sends the WU-ACK has a one-to-one correspondence with the UE, so that when receiving a WU-ACK, the base station can determine which UE sends the WU-ACK according to the resource that carries the WU-ACK. Based on this, the base station can determine that the corresponding UE has been successfully awake, and can send DL data to the UE. This avoids the waste of resources caused by the base station blindly transmitting DL data without determining whether the UE is successfully awake.
  • the terminal device sends the WU-ACK to the network device, where the WU-ACK includes a signal sequence, and the signal sequence has a one-to-one correspondence with the terminal device.
  • the WU-ACK transmitted by different UEs corresponds to different orthogonal signal sequences, which enables the base station to determine which UE transmits the WU-ACK based on the received signal sequence of the WU-ACK. Based on this, the base station can determine that the corresponding UE has been successfully awake, and can send DL data to the UE. This avoids the waste of resources caused by the base station blindly transmitting DL data without determining whether the UE is successfully awake.
  • the method in this embodiment may enable multiple UEs to multiplex the same time-frequency resource to transmit a WU-ACK signal, that is, distinguish the UE by using a code division method, which is beneficial to save transmission resources. Since the right item refers to the previous weight, different UEs having different WU-ACK signal sequences may also be combined with the first resource. In other words, the base station may distinguish the UE based on the first resource and the WU-ACK signal sequence.
  • the terminal device before the terminal device sends the WU-ACK to the network device, the terminal device receives the signal sequence configured by the network device.
  • Different UEs have different WU-ACK signal sequences, so the base station must configure corresponding orthogonal sequences for the UE through signaling.
  • the third interface of the UE is WUR, and the fourth interface is the main communication interface.
  • the former is used to receive the wake-up signal, and the power consumption is low, which is convenient for the UE to save power; the latter can be used for data communication after being woken up, and the power consumption is high, but the transmission rate is also high.
  • a network device comprising:
  • the transceiver is configured to receive and send data
  • the memory is configured to store an instruction
  • the processor configured to execute the instructions in the memory, perform the method of any of embodiments 33-45.
  • the transceiver comprising:
  • the transmitter is configured to send a wake-up frame as described in any of Embodiments 33-45;
  • the receiver is configured to receive the WU-ACK as described in any of embodiments 33-45.
  • the network device of embodiment 57 the network device further comprising a transmitter for transmitting a wake frame frame as described in any of embodiments 33-45.
  • a terminal device comprising:
  • a processor a memory, a transceiver, and a receiver, the transceiver being in an off state, the receiver being in an active state or an intermittent activation state;
  • the transceiver is configured to receive and send data
  • the memory is for storing instructions
  • the processor is operative to execute the instructions in the memory, performing the method of any of embodiments 46-56.
  • the terminal device of embodiment 60 or 61, the transceiver comprising:
  • the transmitter is operative to transmit the WU-ACK as described in any of embodiments 46-56.
  • a computer program product comprising a computer program which, when executed on a computer unit, causes the computer unit to implement the method of any of embodiments 1-14.
  • a computer program product comprising a computer program which, when executed on a computer unit, causes the computer unit to implement the method of any of embodiments 15-26.
  • a computer program product comprising a computer program which, when executed on a computer unit, causes the computer unit to implement the method of any of embodiments 33-45.
  • a computer program product comprising a computer program which, when executed on a computer unit, causes the computer unit to implement the method of any of embodiments 46-56.
  • a computer program which, when executed on a computer unit, causes the computer unit to implement the method of any of embodiments 1-14.
  • a computer program that, when executed on a computer unit, causes the computer unit to be The method of any of embodiments 15-26.
  • a computer program which, when executed on a computer unit, causes the computer unit to implement the method of any of embodiments 33-45.
  • a computer program which, when executed on a computer unit, causes the computer unit to implement the method of any of embodiments 46-56.
  • a network device configured to perform the method of any of embodiments 1-14.
  • a terminal device configured to perform the method of any of embodiments 15-26.
  • a network device configured to perform the method of any of embodiments 33-45.
  • a terminal device configured to perform the method of any of embodiments 46-56.
  • a chip comprising: a processing module and a communication interface, the processing module being operative to perform the method of any of embodiments 1-14.
  • the chip of embodiment 75 the chip further comprising a memory module, the memory module for storing instructions, the processing module for executing the memory stored instructions, and for storing in the memory Execution of the instructions causes the processing module to perform the method of any of embodiments 1-14.
  • a chip comprising: a processing module and a communication interface, the processing module being operative to perform the method of any of embodiments 15-26.
  • a chip comprising: a processing module and a communication interface, the processing module being operative to perform the method of any of embodiments 33-45.
  • a chip comprising: a processing module and a communication interface, the processing module being operative to perform the method of any of embodiments 46-56.
  • the chip of embodiment 81 the chip further comprising a storage module, the storage module is configured to store an instruction, the processing module is configured to execute the instruction stored by the memory, and is stored in the memory Execution of the instructions causes the processing module to perform the method of any of embodiments 46-56.
  • a computer readable storage medium having stored thereon a computer program that, when executed on a computer, causes the computer to implement the method of any of embodiments 1-14.
  • a computer readable storage medium having stored thereon a computer program that, when executed on a computer, causes the computer to implement the method of any of embodiments 15-26.
  • a communication system comprising the terminal device of any of embodiments 15-26 and the network device of any of embodiments 1-14.
  • a computer readable storage medium having stored thereon a computer program that, when executed on a computer, causes the computer to implement the method of any of embodiments 33-45.
  • a computer readable storage medium having stored thereon a computer program that, when executed on a computer, causes the computer to implement the method of any of embodiments 46-56.
  • a communication system comprising the terminal device of any of embodiments 46-56 and the network device of any of embodiments 33-45.
  • FIG. 1 is a schematic structural diagram of a communication system to which an embodiment of the present application is applied;
  • FIG. 2 is a schematic diagram of an application scenario according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of communication between a base station and a UE according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of an intermittently active state of a WUR interface of a UE according to an embodiment of the present disclosure
  • FIG. 5 is a schematic flowchart of a general signaling of communication between a base station and a UE according to an embodiment of the present disclosure
  • FIG. 6 is a flowchart of a communication method according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a base station and a UE communicating through a WUR interface and a main communication interface according to an embodiment of the present disclosure
  • FIG. 8 is a schematic diagram of a non-contention based random access procedure according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a structure of an RAR according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a contention-based random access procedure according to an embodiment of the present disclosure.
  • FIG. 11 is a flowchart of a communication method according to another embodiment of the present application.
  • FIG. 12 is a schematic diagram of a base station and a UE communicating through a WUR interface and a main communication interface according to another embodiment of the present disclosure
  • FIG. 13 is a schematic structural diagram of a communication apparatus according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a communication apparatus according to another embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of a communication apparatus according to another embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of a communication apparatus according to another embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of a communication apparatus according to another embodiment of the present disclosure.
  • FIG. 19 is a schematic structural diagram of a chip according to another embodiment of the present disclosure.
  • FIG. 20 is a schematic structural diagram of a communication apparatus according to another embodiment of the present disclosure.
  • the first communication device is the transmitting end of the wake-up signal
  • the second communication device is the receiving end of the wake-up signal.
  • the first communication device may be a network device, and the network device is, for example, a base station; and the second communication device may be a terminal device, such as a mobile phone, a sensor, or the like.
  • the first communication device may be a terminal device, for example, the terminal device is a mobile phone or the like; and the second communication device may also be a terminal device, for example, the first communication device is a mobile phone or the like, and the second communication device is a smart watch or a hand.
  • the first communication device is a smart watch, a wristband, etc.
  • the second communication device is a mobile phone or the like.
  • the first communication device may be a terminal device, such as a mobile phone
  • the second communication device may be a network device, such as a base station. It should be noted that the embodiment is not limited to the above product form.
  • the solution of the present application will be described below with the first communication device as a network device and the second communication device as a terminal device.
  • the communication system includes a network device and at least one terminal device, the network device including, for example, a radio access network device.
  • the terminal is connected to the wireless access network device by means of a wireless connection, and the wireless access network device is connected to the core network device by wireless or wired.
  • the core network device and the radio access network device may be independent physical devices, or may be functions of the core network device and the logic of the wireless access network device.
  • the functions are integrated on the same physical device, and may also be a function of integrating some core network devices and a part of the functions of the wireless access network device on one physical device.
  • the terminal device can be fixed or mobile.
  • the communication system may further include other network devices, such as a wireless relay device and a wireless backhaul device, which are not shown in FIG. 1.
  • the embodiment of the present application does not limit the number of core network devices, radio access network devices, and terminals included in the communication system.
  • the radio access network device is a network device that the terminal accesses to the communication system in a wireless manner, and may be a base station NodeB, an evolved base station eNodeB, a base station in a 5G communication system, a base station in a future communication system, or a connection in a WiFi system.
  • the specific technology and the specific device configuration adopted by the network device are not limited in the embodiment of the present application.
  • the terminal device may also be called a terminal, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), or the like.
  • the terminal can be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, and an industrial control.
  • Wireless terminal wireless terminal in self driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wisdom A wireless terminal in a smart city, a wireless terminal in a smart home, and the like.
  • Radio access network equipment and terminal equipment can be deployed on land, including indoors or outdoors, handheld or on-board; they can also be deployed on the water; they can also be deployed on aircraft, balloons and satellites in the air.
  • the application scenarios of the radio access network device and the terminal device are not limited.
  • the embodiments of the present application can be applied to downlink signal transmission, and can also be applied to uplink signal transmission, and can also be applied to device to device (D2D) signal transmission.
  • the transmitting device is a radio access network device, and the corresponding receiving device is a terminal device.
  • the transmitting device is a terminal device, and the corresponding receiving device is a wireless access network device.
  • the transmitting device is a terminal device, and the corresponding receiving device is also a terminal device.
  • the embodiment of the present application does not limit the transmission direction of the signal.
  • the radio access network device and the terminal device and the terminal device and the terminal device and the terminal device can communicate through a licensed spectrum, or can communicate through an unlicensed spectrum, or can simultaneously pass the licensed spectrum and Authorize the spectrum for communication.
  • Communication between the radio access network device and the terminal device and between the terminal device and the terminal device may be performed through a spectrum of 6 gigahertz (GHz) or less, or may be communicated through a spectrum of 6 GHz or higher, or may be used below 6 GHz.
  • the spectrum communicates with the spectrum above 6 GHz.
  • the embodiment of the present application does not limit the spectrum resources used between the radio access network device and the terminal device.
  • the application scenario of the present application is described below with the network device as the base station, that is, the first communication device is the base station, and the terminal device is the UE, that is, the second communication device is the UE.
  • FIG. 2 is a schematic diagram of an application scenario according to an embodiment of the present application.
  • a base station may perform data transmission with a UE.
  • the base station can transmit wake-up signals, such as wake-up frames and synchronization frames; the UE can receive the wake-up signal sent by the base station.
  • the UE is configured with a WUR interface (which may also be referred to as a WUR module) and a primary communication interface (which may also be referred to as a primary communication module), and the UE may receive a wake-up signal sent by the base station through the WUR interface.
  • the base station may perform the following embodiments of the present application with the at least one UE, where three UEs are shown in FIG. 2, for example, UE1, UE2, and UE3, but the embodiment is not limited thereto.
  • FIG. 3 is a schematic diagram of communication between a base station and a UE according to an embodiment of the present application.
  • the primary communication interface of the UE is usually in a closed state.
  • Receive a trigger signal from the UE's WUR interface The primary communication interface is activated and then communicates with the base station via the primary communication interface.
  • the trigger signal may be an interrupt signal sent by the WUR interface to the main communication interface, and is used to trigger the main communication interface to enter an active state.
  • the trigger signal is an internal signal of the UE, and may be transmitted by wire or wirelessly. It should be noted that the foregoing WUR interface sends a trigger signal to the main communication interface. In an actual system, the WUR interface can also forward the received wake-up signal to the processor of the UE, and the processor of the UE determines whether to wake up. The main communication interface, at this time, the trigger signal is actually sent by the processor, or is indicated by the processor to other modules.
  • the WUR interface of the UE may be continuously in the receiving state, or may be intermittently in the receiving state.
  • the WUR interface of the UE receives the wake-up signal from the base station in the receiving state, such as a wake-up packet (also referred to as a wake-up frame,
  • a trigger signal is sent to the main communication interface to wake up the main communication interface in the closed state, so that the main communication interface enters the working state, and then performs the main communication interface with the base station through the wake-up main communication interface.
  • the base station may logically include a primary communication interface and a WUR interface.
  • the primary communication interface is often an OFDM broadband transmitter, and the wake-up signal may be a narrowband signal (to reduce the WUR interface of the UE).
  • Receive power consumption for cost reduction and structural simplicity, OFDM wideband transmitters can be utilized to generate narrowband wake-up signals.
  • a partial subcarrier of an OFDM signal is vacant and only transmits a signal on a narrowband corresponding to the wakeup signal, thereby generating a narrowband signal, which is an example of generating a WUR narrowband signal by using an OFDM wideband transmitter. Therefore, the primary communication interface of the base station and the WUR The interface can also be the same interface (that is, the same module). In this case, the base station shown in FIG.
  • the base station can also implement the main communication interface and the WUR interface separately, that is, the base station side can also include two interfaces, which are a main communication interface and a WUR interface.
  • the base station and the UE shown in FIG. 3 have only one antenna. This is mainly considering that the same communication antenna and the WUR interface can share the same antenna in the case of using the same or close frequency band carrier, thereby saving cost and simplifying the device structure. Of course, it is obviously feasible to use different antennas for the main communication interface and the WUR interface, respectively.
  • the two antennas should be configured with different antennas.
  • the primary communication interface uses the 6 GHz band and the WUR interface uses the 1.8 GHz band, where both antennas should use different antennas.
  • the UE uses the WUR interface to receive signals and can reduce power consumption by using the main communication interface.
  • the main reason is that the receiving and decoding of the wake-up signal is much simpler than the traditional main communication interface signal.
  • the wake-up signal is usually modulated by a receiver that is easy to receive, such as on-off key (OOK) modulation, frequency-shift keying (FSK) modulation, and amplitude shift keying (Amplitude shift keying). ASK) modulation, etc.
  • OOK modulation on-off key
  • FSK frequency-shift keying
  • Amplitude shift keying amplitude shift keying
  • ASK amplitude shift keying
  • the signal of the traditional main communication interface (such as the signal of LTE/NR) adopts Orthogonal Frequency Division Multiplexing (OFDM) modulation, Turbo/LDPC/Polar channel coding, etc. at the transmitting end, and accordingly, receives
  • the terminal (such as the UE) needs to perform complex signal processing operations such as FFT and FEC decoding, which require a lot of energy.
  • Another way to implement a low power WUR is to use a passive receiver, such as Near Field Communication (NFC), at the receiving end (such as a UE).
  • NFC Near Field Communication
  • the primary communication interface of the UE and the base station in FIG. 3 may also be other communication interfaces, such as WiFi, BlueTooth. Interfaces for data communication, collectively referred to as the main communication interface or main communication module (main radio), such as LTE, NR, WiFi interfaces; interfaces for device wake-up, collectively referred to as wake-up radio interface (WUR interface) or wake-up radio interface ( WUR interface). For cost-saving and simplified design considerations, the UE's WUR interface often only supports the receiving capability of the wake-up signal without supporting the transmission capability.
  • main radio main communication module
  • WUR interface wake-up radio interface
  • WUR interface wake-up radio interface
  • WUR interface wake-up radio interface
  • the WUR interface can be intermittently activated, and the time window in which the UE's WUR interface is active 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 UE can receive the wake-up signal.
  • the WUR interface is active for 2ms every 100ms.
  • a wake-up signal (such as a wake-up packet) may be sent in the awake window of the UE, thereby waking up the primary communication interface of the UE, which can save power consumption.
  • the start time, window duration, and period of the awake window may be preset (for example, predefined by communication standards) or may be configured by the base station.
  • the awake window may not be introduced, that is, the WUR interface of the UE is always in the listening state, which makes the base station wake up the UE at any time, which is beneficial to reduce the wakeup delay.
  • the receiving end (such as the UE) of the wake-up signal needs to configure the WUR interface.
  • the above wake-up signal is a general term for all signals that can be received and decoded by the WUR interface.
  • the wake-up signal may be the aforementioned wake-up frame or other frames.
  • the WUR is introduced in the NR, that is, the NR UE is configured with the WUR interface, and when the base station has no data to send to the UE and the UE has no data transmission, the primary communication interface (such as NR/LTE/CDMA/GSM, etc.) of the UE is in the closed state. And the WUR interface is active or intermittently activated as shown in Figure 4.
  • the base station When the base station has data to send to the UE, it first sends a wake-up frame to the WUR interface of the UE, so that the UE wakes up its own primary communication interface, and then the base station schedules the DL data transmission of the UE.
  • the general signaling flow is shown in FIG. 5.
  • the PDCCH is sent to the primary communication interface of the UE through the primary communication interface, where the DL transmission scheduling information, that is, the resource used for the subsequent DL data transmission and the related transmission parameters are used.
  • the base station sends a PDSCH to the primary communication interface of the UE through the primary communication interface, where the downlink data is carried.
  • the UE sends a PUCCH to the base station for carrying a response for the DL data, that is, ACK/NACK information.
  • the wake-up signal is WUR interface signaling
  • other messages are the primary communication interface signaling after the primary communication interface of the UE is woken up.
  • the first communication interface (for example, the base station) is configured with a first interface and a second interface, where the first interface may be referred to as a WUR interface, and the second interface may be referred to as a primary communication interface; a wake-up signal
  • the receiving end that is, the second communication device (for example, the UE), configures the third interface and the fourth interface, wherein the third interface may be referred to as a WUR interface, and the fourth interface may be referred to as a primary communication interface.
  • the above WUR interface may also be referred to as a WUR module, and the main communication interface may also be referred to as a main communication module.
  • the base station sends a wake-up signal to the WUR module of the UE through the WUR interface, and the UE receives the wake-up signal sent by the base station through the WUR interface; the base station communicates with the primary communication interface of the UE through the primary communication interface.
  • FIG. 6 is a flowchart of a communication method according to an embodiment of the present disclosure.
  • a first communication device is used as a base station
  • a second communication device is a UE
  • a wake-up signal is used as a wake-up frame.
  • the method of this embodiment may include:
  • the base station sends a wake-up frame to the UE by using a WUR interface of the base station.
  • the UE receives the wake-up frame sent by the base station by using the WUR interface of the UE.
  • the base station includes a first interface and a second interface, where the first interface is a WUR interface, and the second interface is a primary communication interface.
  • the UE includes a third interface and a fourth interface, where the third interface is a WUR interface, and the fourth interface is a primary communication interface.
  • the WUR interface of the base station communicates with the WUR interface of the UE
  • the primary communication interface of the base station communicates with the primary communication interface of the UE.
  • the communication mode of the WUR interface of the base station and the WUR interface of the UE is the first communication mode
  • the communication mode of the primary communication interface of the base station and the primary communication interface of the UE is the second communication mode
  • the first communication mode is This second communication method is different.
  • the WUR interface of the UE and the primary communication interface of the UE are different physical interfaces.
  • the WUR interface of the UE is a receiver
  • the primary communication interface of the UE is a transceiver.
  • the WUR interface of the base station is integrated with the primary communication interface of the base station as the same physical interface.
  • the WUR interface of the base station and the primary communication interface of the base station are integrated into the same transceiver.
  • the WUR interface and the primary communication interface of the base station are two logical interfaces.
  • the WUR interface of the base station and the primary communication interface of the base station are different physical interfaces, for example: in hardware
  • the WUR interface of the base station is a transmitter
  • the primary communication interface of the base station is a transceiver.
  • the base station when the base station needs to transmit data with the UE, the base station needs to send a wake-up frame to the UE to wake up the primary communication interface of the UE. Therefore, the base station sends a wake-up frame to the UE through the WUR interface of the base station, where the wake-up frame is used to wake up the primary communication interface of the UE; that is, the base station sends the wake-up frame to the WUR interface of the UE through the WUR interface of the base station.
  • the UE receives the wake-up frame sent by the base station (the WUR interface of the base station) through the WUR interface of the UE.
  • the UE wakes up the primary communication interface of the UE according to the wake-up frame.
  • the UE receives the wake-up frame sent by the base station, where the wake-up frame is used to wake up the main communication module, and the main communication module of the current UE is in the off state, and then the UE wakes up the main communication module according to the wake-up frame, so that the main communication module Enter the working state.
  • the identifier of the target UE may also be included in the wake-up frame, where the target UE is a UE that the base station wants to wake up. After receiving the wake-up frame, a UE may determine whether it is the target wake-up device of the wake-up frame based on the identifier of the target UE carried therein. If so, the UE wakes up the primary communication interface, otherwise the wake-up frame is ignored.
  • the target UE identifier included in the wake-up frame may indicate one UE, and may also indicate a group of UEs.
  • the wake-up object of the wake-up frame can be either a device or a group of devices. For the latter, as long as the UE determines that it is one of the set of devices, it considers itself to be the target wake-up device for the wake-up frame.
  • the UE sends a WU-ACK to the base station by using a primary communication interface of the UE.
  • the base station receives the WU-ACK sent by the UE by using a primary communication interface of the base station.
  • the UE after the UE wakes up the primary communication interface of the UE, the UE sends a WU-ACK to the base station, where the WU-ACK is used to indicate that the UE successfully receives the wake-up frame and has awake the primary communication interface of the UE.
  • the base station receives the WU-ACK sent by the UE, and determines that the primary communication interface of the UE has successfully awake according to the WU-ACK, so the primary communication interface of the base station can communicate with the primary communication interface of the UE.
  • the UE may send a WU-ACK to the base station (the primary communication interface of the base station) through the primary communication interface of the UE, and correspondingly, the base station may receive the UE (the primary communication interface of the UE) by using the primary communication interface of the base station.
  • WU-ACK That is, the WU-ACK is transmitted through the main communication interface, wherein FIG. 6 is shown in this implementation manner.
  • the base station and the UE communicate through the WUR interface and the main communication interface as shown in FIG. 7.
  • the UE may send a WU-ACK to the base station (the WUR interface of the base station) through the WUR interface of the UE, and correspondingly, the base station may receive the WU sent by the UE (the WUR interface of the UE) through the WUR interface of the base station.
  • ACK the WU-ACK is transmitted through the WUR interface, which means that if the WUR interface of the UE has the transmission capability, the WU-ACK can also be sent by the WUR interface of the UE.
  • the base station of the embodiment further sends downlink data to the UE (the primary communication interface of the UE) by using the primary communication interface of the base station, and correspondingly, the UE also receives the base station by using the primary communication interface of the UE.
  • the primary communication interface sends the downlink data.
  • the downlink data may be a PDSCH, a paging, a system message, or the like.
  • the base station determines, according to the received WU-ACK, that the primary communication interface of the UE has successfully awake, and then sends downlink data to the primary communication interface of the UE through the primary communication interface. Because the primary communication interface of the UE has successfully awake, the UE may The downlink data sent by the base station is received through the main communication interface, which improves the data transmission success rate and avoids waste of data transmission due to blind data transmission.
  • the base station sends a wake-up frame to the WUR interface of the UE through the WUR interface; the UE wakes up the primary communication interface of the UE according to the wake-up frame, and then sends a WU-ACK to the base station, where the UE successfully receives the wake-up frame and has Wake up the main communication interface.
  • the base station After receiving the WU-ACK of the UE, the base station determines that the UE has been successfully awake, and then sends downlink data to the UE, so as to prevent the UE from waking up the main communication interface (eg, the UE does not correctly receive the wake-up frame, or , the UE correctly receives the wake-up frame but the primary communication interface In the case where the port has not yet entered the working state, the base station blindly transmits downlink data to the UE and wastes resources.
  • the base station sends a PDSCH to the primary communication interface of the UE through the primary communication interface, where the downlink data is carried.
  • the UE sends a PUCCH to the base station to carry a response for the downlink data, that is, ACK/NACK information.
  • the problem is how the UE determines the Timing Advance (TA) used when transmitting the PUCCH carrying the ACK/NACK.
  • TA Timing Advance
  • the base station After the UE is awake from the last time, the base station communicates with the base station through the main communication interface until the wake-up is reached.
  • the base station may have communicated through the main communication interface for a long period of time, and the location of the UE may change greatly due to the movement.
  • the saved TA is no longer applicable to the transmission of the current PUCCH. Therefore, how to determine the appropriate TA is an urgent problem to be solved.
  • one way for the UE to acquire the TA is a random access procedure, specifically including contention based random access and non-contention based random access.
  • FIG. 8 is a schematic diagram of a non-contention based random access procedure according to an embodiment of the present disclosure.
  • the base station pre-configures a random access preamble (preamble) and a physical random number used to transmit a random access preamble.
  • a physical random access channel PRACH
  • PRACH physical random access channel
  • the UE's TA then, the base station sends a PDCCH to the UE, and the PDCCH is used to schedule downlink (DL) transmission resources to transmit a random access response (RAR); the base station then transmits the RAR on the scheduled DL transmission resource.
  • DL downlink
  • RAR random access response
  • the aforementioned TA is carried in the RAR.
  • the structure of the RAR is as shown in FIG. 9. Note that the PDCCH is not indicated in FIG.
  • FIG. 10 is a schematic diagram of a contention-based random access procedure according to an embodiment of the present disclosure.
  • a PRACH used for transmitting a random access preamble in a contention-based random access procedure is shared by multiple UEs.
  • the preamble that the UE selects is also indeterminate, and multiple UEs may simultaneously transmit the preamble on the same PRACH resource, thereby causing a preamble collision. Therefore, the contention-based random access procedure adds two new signalings based on the non-contention access-based random access procedure for collision resolution, and the UE's TA acquisition and random access based on non-competitive access.
  • the access procedure is exactly the same, that is, the base station estimates the TA of the UE based on the random access preamble sent by the receiving UE, and informs the UE in the RAR that the TA is carried in the RAR. Similarly, before the base station sends the RAR, the PDCCH needs to be sent to indicate the resource allocation of the RAR.
  • the structure of the RAR is shown in Figure 9.
  • the UE needs to obtain at least three signalings: a random access preamble, a PDCCH, and an RAR. Thereafter, the UE can perform uplink (UL) transmission based on the TA obtained from the RAR.
  • RAR is high-level signaling, and the transmission delay is large. Therefore, the above process of acquiring a TA may have a large signaling overhead and cause a large delay.
  • the UE obtains the TA. But over time, the UE's TA may change. If the UE is in the RRC_IDLE state, the random access procedure needs to be performed again; if the UE is in the RRC_CONNECTED state, the random access procedure does not need to be re-executed because the base station can be based on any signal sent by the UE (such as SRS) /DMRS/CQI/ACK/NACK/PUSCH, etc.) Estimate the TA of the UE.
  • SRS signal sent by the UE
  • the base station When the base station considers that the TA of a certain UE needs to be adjusted, it sends a Timing Advance Command MAC control element (TAC MAC CE) to the UE, where the TAC MAC CE carries a new TA.
  • TAC MAC CE Timing Advance Command MAC control element
  • the TAC MAC CE is usually carried on the PDSCH. Therefore, before the TAC MAC CE, the base station needs to first send a PDCCH for scheduling the resources used by the TAC MAC CE.
  • the solution only applies to the UE in the RRC_CONNECTED state, that is, the UE and the base station always have signaling interaction, and the UE working on the WUR interface and the primary communication interface is off does not have signaling interaction with the base station.
  • this scheme also has the problem of large signaling overhead and large delay.
  • the present invention provides a solution to the problem that the UE acquires the uplink of the UE after the UE is awake by the WUR.
  • a communication method is used to acquire the TA, so that the UE can quickly acquire the TA, thereby reducing the signaling overhead of the TA acquisition process and reducing the delay. The details are as follows.
  • FIG. 11 is a flowchart of a communication method according to another embodiment of the present application.
  • the first communication device is a base station
  • the second communication device is a UE
  • the wake-up signal is used as a wake-up frame.
  • the method of this embodiment may include:
  • the base station sends a wake-up frame to the UE by using a WUR interface of the base station.
  • the UE receives the wake-up frame sent by the base station by using the WUR interface of the UE.
  • the UE wakes up the primary communication interface of the UE according to the wake-up frame.
  • the UE sends a WU-ACK to the base station by using a primary communication interface of the UE.
  • the base station receives the WU-ACK sent by the UE by using a primary communication interface of the base station.
  • S204 and S205 in FIG. 11 are used to transmit the WU-ACK by using the primary communication interface.
  • the present embodiment is not limited thereto.
  • the WU-ACK may also be transmitted through the WUR interface.
  • the base station sends a PDCCH to the UE by using a primary communication interface of the base station.
  • the UE receives the PDCCH sent by the base station by using a primary communication interface of the UE.
  • the WU-ACK received by the base station in this embodiment may also be used to measure the TA of the UE. Therefore, after receiving the WU-ACK sent by the primary communication interface of the UE by using the primary communication interface of the base station, the base station measures the TA of the UE based on the WU-ACK. Then, the TA of the UE is carried in the PDCCH, and then the base station sends the PDCCH to the UE (the primary communication interface of the UE) through the primary communication interface.
  • the UE receives the PDCCH sent by the base station (the primary communication interface of the base station) through the primary communication interface of the UE; the PDCCH is used to schedule transmission of downlink data, for example, resource allocation and transmission parameters of the downlink data used by the PDCCH for scheduling the UE;
  • the PDCCH includes the TA, wherein the TA is obtained by the base station according to the WU-ACK.
  • the UE updates its saved TA, and the updated TA (that is, the received TA) can be used for PUCCH transmission, such as the PUCCH shown in FIG. 12, and can also be used for subsequent transmission of other data.
  • the bearer ACK/NACK is shown in the PUCCH in FIG. 12, where the ACK/NACK may be referred to as a data response message.
  • the WU-ACK in this embodiment may also be used for channel measurement and transmission parameter determination, that is, the base station measures the UL channel quality of the UE based on the WU-ACK, and determines the corresponding DL channel quality based on the channel reciprocity, thereby determining the DL transmission.
  • Transmission parameters such as MCS.
  • the WU-ACK can be a highly reliable signal waveform, such as a random access preamble in a random access procedure. Such a signal waveform has a large tolerance for timing deviation, and can be successfully detected by the base station with a large probability even if the TA is inaccurate, thereby improving the accuracy of the base station measurement and obtaining the TA.
  • the base station sends downlink data to the UE by using a primary communication interface of the base station.
  • the UE receives downlink data sent by the base station by using a primary communication interface of the UE.
  • the UE uses the TA to send a data response message to the base station by using a primary communication interface of the UE.
  • the base station receives a data response message sent by the UE by using a primary communication interface of the base station.
  • the UE after receiving the downlink data sent by the primary communication interface of the base station, the UE sends a data response message to the primary communication interface of the base station through the primary communication interface, and the UE adopts the PDCCH received in the foregoing S207.
  • the included TA sends a data response message.
  • the data response message is used to confirm whether the downlink data is successfully received.
  • the data response message may be an ACK, indicating that the UE has successfully received the downlink data; or the data response message may also be a NACK, indicating that the UE has not successfully received the downlink data.
  • the TA obtained by the UE from the PDCCH can be used for the data response message of the subsequent downlink data, which avoids the reliability reduction of the UL response transmission caused by using the inaccurate TA, and improves the reliability.
  • the base station after receiving the WU-ACK of the UE, determines that the primary communication interface of the UE has been successfully awake, and then sends the downlink data, thereby avoiding resource waste caused by the base station blindly transmitting downlink data.
  • the base station may also obtain the TA of the UE based on the WU-ACK measurement, and carry the TA in the PDCCH, and send the UE to the UE through the primary communication interface, and after the UE configured with the WUR interface is awake by the base station, the UE receives the information from the primary communication interface.
  • the downlink data scheduling information and the TA are simultaneously obtained in the PDCCH, which reduces the delay and signaling overhead of the TA acquisition process.
  • the UE sends a WU-ACK to the base station (for example, the primary communication interface of the base station) on the first resource (for example, through the primary communication interface), and accordingly, the base station (
  • the WU-ACK transmitted by the UE e.g., the primary communication interface of the UE
  • the first resource for example, through the primary communication interface.
  • the first resource is preset, such as defined in a communication standard, or the first resource is a base station configured for the UE.
  • the base station and the UE may be based on the time offset and the time domain of the wake-up frame
  • the location determines the time domain location of the first resource.
  • the time offset is preset, or the time offset is configured by the base station to the UE.
  • the base station configures the time offset for the UE (the primary communication interface of the UE) through the primary communication interface in advance, or the base station indicates the time offset in the wake-up frame.
  • the UE further sends a wake-up time to the base station (the primary communication interface of the base station) by using the primary communication interface of the UE, where the wake-up time is required for the UE to enter the working state from the receiving the wake-up frame to the primary communication interface of the UE.
  • the base station receives the wake-up time sent by the UE through the primary communication interface, and then the base station determines the time offset according to the wake-up time, for example, the time offset is greater than or equal to the wake-up time to ensure that the first resource arrives.
  • the UE's main communication interface has entered the working state, it can send WU-ACK.
  • the wake-up times of different UEs may be different.
  • the UE reports its wake-up time to the base station, so that the base station determines the time offset T corresponding to the UE based on the wake-up time.
  • the longer the wake-up time of the UE the larger the corresponding T value, because the UE needs to spend more time to wake up its own main communication interface.
  • the wake-up frame further includes: resource indication information, where the resource indication information is used to indicate a time domain location and/or a frequency domain location of the first resource.
  • the UE determines the first resource according to the resource indication information included in the wake-up frame.
  • the resource indication information may also be a resource index number.
  • the first resource has different resources for different resources.
  • the first resource may be a PRACH resource, that is, the resource that transmits the WU-ACK may multiplex the PRACH resource.
  • the PRACH resource may be preset, or the PRACH resource is configured by the base station to the UE.
  • the UE may send a WU-ACK on the PRACH resource configured by the base station.
  • the WU-ACK may be a random access preamble or a specially designed WU-ACK signal.
  • the PRACH resource may be shared by multiple UEs (contention based random access) or may be dedicated to the target UE (based on non-contention based random access). Since the PRACH resource is not always available, there may be a long period of time between the UE receiving the wake-up frame and the next PRACH resource opportunity, which may result in a large delay.
  • the first resource may be an unauthorized (Grant-free, also known as UL transmission without grant) Resources, that is, resources that transmit WU-ACKs, can use Grant-free resources.
  • Grant-free also known as UL transmission without grant
  • Resources that is, resources that transmit WU-ACKs, can use Grant-free resources.
  • the PRACH resource may be preset, or the PRACH resource is configured by the base station to the UE.
  • the base station needs to configure the Grant-free resource for the UE in advance.
  • the UE receives the wake-up frame of the base station, the UE sends a WU-ACK to the base station on the Grant-free resource configured by the base station.
  • Grant-free resources are generally shared by multiple UEs, and the wake-up frame does not always need to be sent (correspondingly, the UE does not always need to send WU-ACK), so the WU-ACK is transmitted using the Grant-free resource. Can effectively save WU-ACK transmission resources.
  • the Grant-free resource may be dedicated to transmitting WU-ACK, or may be shared by WU-ACK and UL data.
  • the first resource may be a dedicated transmission resource, which is called a WU-ACK dedicated resource, and may also be referred to as a wake-up response channel (WU-ACK Channel, WACH) resource.
  • WU-ACK dedicated resource a dedicated transmission resource
  • WACH wake-up response channel
  • the first resource is a WU-ACK dedicated resource
  • the WU-ACK dedicated resource is located at a fixed time-frequency location, and the time-frequency location may be preset, or the time-frequency location is configured by the base station to the UE.
  • a WU-ACK dedicated resource may be located in a specific frequency domain bandwidth of a specific subframe.
  • the WU-ACK dedicated resource is located on a specific frequency band in each subframe 3, or the WU-ACK dedicated resource is located on a specific frequency band of subframe 3 in the even system frame.
  • the WU-ACK dedicated resource belongs to the UL resource, so in the case of Time Division Duplexing (TDD), it can only be located in the UL subframe.
  • TDD Time Division Duplexing
  • the specific time domain and/or frequency domain resource allocation of the WACH resource may be semi-static configuration by the base station through RRC signaling, MAC CE or system message, or physical layer signaling such as DCI or group common DCI. Dynamic configuration.
  • the time domain location of the WU-ACK dedicated resource is located at a location offset by a time offset of the wake-up signal.
  • the base station sends a wake-up frame to the WUR interface of the UE through the WUR interface in the subframe n, and the corresponding WU-ACK dedicated resource is located in the subframe n+k.
  • k can be standard pre-defined or configured by the base station to the UE.
  • the UE may report the wake-up time of the primary communication interface to the base station (ie, the duration from when the UE receives the wake-up frame on the WUR interface to the active state of the primary communication interface), so that the base station can determine k.
  • the frequency domain location of the WU-ACK may be standard pre-defined, or may be configured by the base station (such as the base station is semi-statically configured to the UE through RRC signaling), or determined by other methods.
  • the base station sends the resource indication information in the wake-up frame sent by the WUR interface.
  • the resource indication information may directly indicate a WU-ACK dedicated resource, that is, directly indicate a time domain and/or a frequency domain location of the WU-ACK dedicated resource.
  • the resource indication information indicates the k in the second implementation manner described above.
  • the resource indication information may indirectly indicate a WU-ACK dedicated resource, that is, the UE needs to calculate a time domain and/or a frequency domain location of the WU-ACK resource based on the resource indication information and a predefined rule.
  • the indirect indication reference may be made to the method of calculating the PHICH resource location based on the UL resource-based minimum PRB index and the base station configured n DMRS in the existing communication standard, and details are not described herein again.
  • the size of the WU-ACK dedicated resource is configurable.
  • the base station semi-statically configures the size of the WU-ACK dedicated resource through RRC signaling, MAC CE, system message, etc. based on the number of current UEs; or, the base station dynamically configures the WU through physical layer signaling (such as DCI or group common DCI).
  • the base station indicates the size of the WU-ACK dedicated resource in the wake-up frame.
  • base station configuration to the UE is completed by interaction between the primary communication interface of the base station and the primary communication interface of the UE.
  • the base station sends a wake-up frame to one UE as an example, but In some application scenarios, the base station may send the wake-up frame to multiple UEs at the same time. Accordingly, the base station may receive the WU-ACK sent by multiple UEs at the same time, that is, the base station simultaneously receives multiple WU-ACKs, so the UE sends
  • the WU-ACK should enable the base station to determine which UE the WU-ACK is sent according to the WU-ACK, that is, determine the identity of the UE that sent the WU-ACK. In other words, the WU-ACK should directly or indirectly indicate the identity (UE ID) of the UE that sent the WU-ACK.
  • the mapping between the WU-ACK and the identity of the UE can be implemented in various ways. Specifically, the following implementation manners may exist, but the embodiment is not limited thereto.
  • the first resource has a one-to-one correspondence with the identifier of the UE; correspondingly, the base station may further be configured according to the first resource, and between the identifier of the first resource and the UE.
  • the one-to-one correspondence determines the identity of the UE, that is, determines the UE that sends the WU-ACK. Based on this, the base station can determine that the corresponding UE has been successfully awake, and can send DL data to the UE. This avoids the waste of resources caused by the base station blindly transmitting DL data without determining whether the UE is successfully awake.
  • the base station may configure different WU-ACK transmission resources for different UEs, which are also referred to as a first resource (for example, a WU-ACK dedicated resource), and the following description is performed by using the first resource as a WU-ACK transmission resource, and receiving The WU-ACK transmission resource where the WU-ACK is located to identify the transmitting UE.
  • the WU-ACK transmission resource may be a time domain and/or a frequency domain resource. In this case, the signal sequences included in the WU-ACK of different UEs may be the same or different.
  • the base station needs to configure the WU-ACK transmission resource corresponding to each UE by using signaling, which may be RRC signaling/physical layer signaling/waking frame.
  • the base station and the UE may also determine the WU-ACK transmission resource corresponding to the UE by using a predefined rule.
  • the base station configures a WU-ACK transmission resource pool (for example, a WU-ACK dedicated resource pool) through RRC signaling/physical layer signaling, and the base station and the UE can calculate the UE based on the identifier of the UE (eg, C-RNTI) and a predefined rule.
  • the corresponding WU-ACK transmission resource in the WU-ACK transmission resource pool may be used to calculate the UE based on the identifier of the UE (eg, C-RNTI) and a predefined rule.
  • the WU-ACK transmission resource corresponding to the UE should be reserved to receive a possible incoming WU-ACK on the WU-ACK transmission resource.
  • the WU-ACK transmission resource corresponding to the UE may be scheduled by the base station for other purposes. For example, the base station can schedule the WU-ACK transmission resource to UL data transmissions of other UEs.
  • WU-ACK transmission resources need to be reserved for each UE, there may be more reserved WU-ACK transmission resources in the case of more UEs, but in reality, since these WU-ACK transmission resources are not always It is used, and the base station can use the WU-ACK transmission resource that is not currently used as the UL data transmission resource scheduling. In summary, in this embodiment, resources are not actually wasted because too many WU-ACK transmission resources are reserved.
  • the WU-ACK includes a signal sequence
  • the signal sequence has a one-to-one correspondence with the identifier of the UE
  • the base station may further perform the signal sequence included in the WU-ACK.
  • the base station can determine that the corresponding UE has been successfully awake, and can send DL data to the UE. This avoids the waste of resources caused by the base station blindly transmitting DL data without determining whether the UE is successfully awake.
  • the method in this embodiment may enable multiple UEs to multiplex the same time-frequency resource to transmit the WU-ACK, that is, distinguish the UE by the code division method, which is beneficial to save transmission resources.
  • the base station may also send signal sequence indication information to the UE (the primary communication interface of the UE) through the primary communication interface, the indication information being used to indicate the signal sequence.
  • the signal sequence indication information may be an index of the signal sequence.
  • the signal sequence may also be referred to as a WU-ACK signal sequence.
  • the base station may allocate different orthogonal sequences to the UE as a WU-ACK signal sequence in an explicit or implicit manner.
  • the base station is Different UEs configure different DMRS sequences and use the DMRS sequence as the WU-ACK signal sequence.
  • the base station may configure each UE with a corresponding WU-ACK signal sequence, such as a WU-ACK orthogonal sequence, by signaling, which may be RRC signaling or physical layer signaling.
  • signaling which may be RRC signaling or physical layer signaling.
  • the signaling may also be a wake-up frame, that is, the wake-up frame further includes the foregoing signal sequence indication information. Therefore, the signal sequence indication is sent by the base station to the UE through the WUR interface.
  • the WU-ACK transmission of different UEs may be multiplexed with the same time-frequency resource, that is, the WU-ACK transmission resources of different UEs may be the same, but different UEs may be distinguished by a signal sequence (eg, an orthogonal sequence) in the WU-ACK.
  • the user is beneficial to reduce the overhead of the WU-ACK transmission resource (ie, the first resource).
  • the WU-ACK includes a signal sequence
  • the first resource, the signal sequence, and the identifier of the UE have a corresponding relationship.
  • the base station may further be configured according to the first resource in which the received WU-ACK is located, the signal sequence included in the WU-ACK, and the correspondence between the first resource, the signal sequence, and the identifier of the UE.
  • the identity of the UE is determined, that is, the UE that transmits the WU-ACK is determined.
  • the base station may also send signal sequence indication information to the UE (the primary communication interface of the UE) through the primary communication interface, the indication information being used to indicate the signal sequence.
  • the signal sequence may also be referred to as a WU-ACK signal sequence.
  • the signal sequence included in the WU-ACK of a given length may also be referred to as a WU-ACK signal sequence, and the WU-ACK signal sequence may be an orthogonal sequence; wherein the number of available orthogonal sequences may be limited, and There may be many UEs with a WUR interface configured under one base station. The number of available orthogonal sequences may be much smaller than the number of UEs. In this case, the orthogonal sequence can be combined with the WU-ACK transmission resource to reuse the orthogonal sequence. In other words, different UE groups are bound to different WU-ACK transmission resources, and different WU-ACK transmission resources can use the same orthogonal sequence.
  • the WU-ACK transmission resource may be a time domain and/or a frequency domain resource.
  • the first group of UEs transmits the WU-ACK in the first WU-ACK transmission resource
  • the second group of UEs transmits the WU-ACK in the second WU-ACK transmission resource
  • this N orthogonal sequences can be multiplexed in two sets of UEs, while UEs in the same group cannot use the same orthogonal sequence. Since the two sets of UEs transmit WU-ACK on different WU-ACK transmission resources, even if the same orthogonal sequence is used as the WU-ACK signal sequence, the base station will not cause confusion when identifying different UEs.
  • the base station may configure a WU-ACK transmission resource associated with each UE and a signal sequence in the WU-ACK (for example, referred to as a WU-ACK orthogonal sequence) by signaling.
  • the signaling may be RRC signaling or physical layer signaling, or may be a wake-up frame.
  • the base station may also configure the WU-ACK transmission resource and the WU-ACK orthogonal sequence associated with each UE through different signaling. For example, the base station configures a WU-ACK transmission resource corresponding to the UE by using the first type of signaling in the RRC signaling/physical layer signaling/awake frame, and adopts the second type in the RRC signaling/physical layer signaling/waking frame.
  • the signaling configures a WU-ACK orthogonal sequence corresponding to the UE, and a different type of signaling of the first type of signaling and the second type of signaling. It should be noted that, in some embodiments, when the base station configures the WU-ACK transmission resource and the WU-ACK orthogonal sequence to the base station through the wake-up frame, the WUR interface is used.
  • the method or the step implemented by the first communication device may also be implemented by a chip inside the first communication device.
  • the method or step may be implemented by a second communication device, such as a base station, or by a chip internal to the second communication device.
  • FIG. 13 is a schematic structural diagram of a communication apparatus according to an embodiment of the present disclosure.
  • the communication apparatus of the present embodiment may include a sending module 1301 and a receiving module 1302.
  • the communication device of this embodiment further includes a first interface and a second interface, which are not shown in the figure.
  • the first interface is for communicating with a third interface of the second communication device
  • the second interface is for communicating with a fourth interface of the second communication device.
  • the sending module 1301 is configured to send, by using the first interface, a wake-up signal to the second communications device, where the wake-up A signal is used to wake up the fourth interface of the second communication device.
  • the receiving module 1302 is configured to receive a WU-ACK sent by the second communications device.
  • the receiving module 1302 is configured to: receive, by the first interface, the WU-ACK sent by the second communications device; or receive the second through the second interface. The WU-ACK transmitted by the communication device.
  • the sending module 1301 is further configured to: after the receiving module 1302 receives the WU-ACK sent by the second communications device, send the downlink to the second communications device by using the second interface. data.
  • the sending module 1301 is further configured to: after the receiving module 1302 receives the WU-ACK sent by the second communications device, send the PDCCH to the second communications device by using the second interface. And the PDCCH is used to schedule transmission of the downlink data, where the PDCCH includes a TA, and the TA is obtained by the first communications device according to the WU-ACK.
  • the receiving module 1302 is further configured to: receive, by using the second interface, a data response message sent by the second communications apparatus by using the TA, where the data response message is used to confirm whether the terminal is successfully received.
  • the downlink data is further configured to: receive, by using the second interface, a data response message sent by the second communications apparatus by using the TA, where the data response message is used to confirm whether the terminal is successfully received.
  • the receiving module 1302 is specifically configured to: receive, by using the first resource, the WU-ACK sent by the second communications device.
  • the first resource is preset, or the first resource is configured by the first communication device to the second communication device.
  • the time offset is preset, or the time offset is configured by the first communication device to the second communication device.
  • the communication device of this embodiment further includes a processing module 1303.
  • the receiving module 1302 is further configured to receive the second through the second interface before the sending module 1301 sends a wake-up signal to the second communications device by using the first interface.
  • the wake-up time sent by the communication device; the wake-up time is a length of time required for the second communication device to enter the working state from receiving the wake-up signal to the fourth interface;
  • the processing module 1303 is configured to determine the TA according to the wakeup time.
  • the wake-up signal further includes: resource indication information, where the resource indication information is used to indicate a time domain location and/or a frequency domain location of the first resource.
  • the first resource is a PRACH resource, or an unlicensed resource, or a WU-ACK dedicated resource.
  • the first resource is a WU-ACK dedicated resource.
  • the first resource has a one-to-one correspondence with the identifier of the second communication device; the processing module 1303 is further configured to: according to the first resource, and the first The one-to-one correspondence between the resource and the identifier of the second communication device determines the identity of the second communication device.
  • the WU-ACK includes a signal sequence
  • the signal sequence has a one-to-one correspondence with the identifier of the second communication device
  • the processing module 1303 is further configured to: according to the signal And determining, by the sequence, a one-to-one correspondence between the signal sequence and an identifier of the second communication device, determining an identity of the second communication device.
  • the WU-ACK includes a signal sequence
  • the first resource, the signal sequence, and the identifier of the second communication device have a corresponding relationship
  • the processing module 1303 further uses Determining, according to the first resource, the signal sequence, and the correspondence between the signal sequence and the identifier of the second communication device, determining the second communication The identification of the device.
  • the sending module 1301 is further configured to: send, by using the second interface, signal sequence indication information to the second communications device, where the indication information is used to indicate the signal sequence.
  • the communication mode of the first interface and the third interface is a first communication mode
  • the communication mode of the second interface and the fourth interface is a second communication mode
  • the first communication method is different from the second communication method.
  • the first interface and the third interface are wake-up radio interfaces, and the second interface and the fourth interface are main communication interfaces.
  • first interface and the second interface are different physical interfaces, or the first interface and the second interface are integrated into the same physical interface;
  • the third interface and the fourth interface are different physical interfaces.
  • the communication device described above in this embodiment may be used to perform the technical solution of performing chip execution of the base station/base station in the foregoing method embodiments, and the implementation principle and the technical effect are similar.
  • the function of each module may refer to the corresponding method embodiment. The description is not repeated here.
  • FIG. 14 is a schematic structural diagram of a communication apparatus according to another embodiment of the present disclosure.
  • the communication apparatus of this embodiment may include: a memory 1401, a processor 1402, a first interface 1403, and Second interface 1404.
  • the first interface 1403 and the second interface 1404 are the same communication interface, or are different communication interfaces.
  • the first interface 1403 is configured to communicate with a third interface of the second communication device, and the second interface 1404 is configured to communicate with a fourth interface of the second communication device.
  • the memory 1401, the processor 1402, the first interface 1403, and the second interface 1404 are connected to each other through a bus 1405.
  • the bus 1405 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus 1405 described above can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 14, but it does not mean that there is only one bus or one type of bus.
  • the processor 1402 is configured to execute the program instruction in the memory 1401 to perform a method performed by a base station in any of the foregoing method embodiments.
  • the program instructions may be implemented in the form of a software functional unit and can be sold or used as a standalone product, which may be any form of computer readable storage medium. Based on such understanding, all or part of the technical solution of the present application may be embodied in the form of a software product, including a plurality of instructions for causing a computer device, specifically a processor 1402, to perform the base station in various embodiments of the present application. All or part of the steps.
  • the foregoing computer readable storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. The medium of the code.
  • the first communication device described above in this embodiment may be used to implement the technical solution of the base station or its internal chip in the foregoing method embodiments of the present application, and the implementation principle and the technical effect are similar, wherein the functions of each module may be implemented by referring to the method. The corresponding description in the example will not be repeated here.
  • FIG. 15 is a schematic structural diagram of a chip according to an embodiment of the present disclosure.
  • the chip 1500 of the embodiment may include: a processing module 1501 , a first interface 1502 , and a second interface 1503 .
  • the first interface 1502 and the second interface 1503 are the same communication interface, or are different communication interfaces.
  • the processing module 1501 is configured to perform the method performed by the base station in any of the foregoing method embodiments.
  • the chip of this embodiment may further include: a storage module 1504, where the storage module 1504 is configured to store program instructions, where the processing module 1501 is configured to execute the program instructions stored by the storage module 1504, and Execution of the program instructions stored in the storage module 1504 causes the processing module 1501 to perform the method performed by the base station in any of the method embodiments described above.
  • a storage module 1504 is configured to store program instructions
  • the processing module 1501 is configured to execute the program instructions stored by the storage module 1504
  • Execution of the program instructions stored in the storage module 1504 causes the processing module 1501 to perform the method performed by the base station in any of the method embodiments described above.
  • the chip described above in this embodiment may be used to implement the technical solution of the base station or its internal chip in the foregoing method embodiments of the present application, and the implementation principle and the technical effect thereof are similar, and the functions of each module may refer to the corresponding in the method embodiment. The description is not repeated here.
  • FIG. 16 is a schematic structural diagram of a communication apparatus according to another embodiment of the present disclosure.
  • the communication apparatus of this embodiment is used as the first communication apparatus, and the first communication apparatus is used as the base station 1600.
  • the base station 1600 may include A processor 1601, a memory 1602, a transceiver 1603, and a bus 1604.
  • the processor 1601, the memory 1602, and the transceiver 1603 are connected to each other through a bus 1604.
  • the bus 1604 can be a PCI bus or an EISA bus.
  • the bus 1604 described above can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 16, but it does not mean that there is only one bus or one type of bus.
  • the memory 1602 is configured to store program instructions.
  • the transceiver 1603 acts as a primary communication interface for transceiving the primary communication interface signals (eg, LTE/NR signals) and also as a WUR interface for transmitting wake-up signals.
  • the processor 1601 is configured to execute the program instruction in the memory 1602, and send a wake-up signal to the second communication device by using the transceiver 1603, wherein the wake-up signal is used to wake up and receive the second communication device. And receiving, by the transceiver 1603, the WU-ACK sent by the second communication device.
  • the base station 1600 of this embodiment may further include a transmitter 1605 as a main communication interface for transmitting and receiving a main communication interface signal (for example, an LTE/NR signal), and the transmitter 1605 as a WUR.
  • the interface is used to send wake-up signals.
  • the processor 1601 is configured to execute the program instruction in the memory 1602, and send a wake-up signal to the second communication device by using a transmitter 1605, where the wake-up signal is used to wake up and receive the second communication device. And receiving, by the transceiver 1603, the WU-ACK sent by the second communication device.
  • the processor 1601 is further configured to: send, by using the transceiver 1603, downlink data to the second communications device.
  • the processor 1601 is further configured to: send, by using the transceiver 1603, a PDCCH to the second communications apparatus, where the PDCCH is used to schedule transmission of the downlink data, where the PDCCH includes timing
  • the TA is advanced, and the TA is obtained by the first communication device according to the WU-ACK.
  • the processor 1601 is further configured to: receive, by using the transceiver 1603, a data response message sent by the second communications apparatus by using the TA, where the data response message is used to confirm whether the terminal is successfully received.
  • the downlink data is further configured to: receive, by using the transceiver 1603, a data response message sent by the second communications apparatus by using the TA, where the data response message is used to confirm whether the terminal is successfully received.
  • the downlink data is further configured to: receive, by using the transceiver 1603, a data response message sent by the second communications apparatus by using the TA, where the data response message is used to confirm whether the terminal is successfully received.
  • the downlink data is further configured to: receive, by using the transceiver 1603, a data response message sent by the second communications apparatus by using the TA, where the data response message is used to confirm whether the terminal is successfully received.
  • the processor 1601 is specifically configured to: receive, by the first resource, the WU-ACK sent by the second communications device by using the transceiver 1603.
  • the first resource is preset, or the first resource is configured by the first communication device to the second communication device.
  • the time offset is preset, or the time offset is configured by the first communication device to the second communication device.
  • the processor 1601 is further configured to receive, by the transceiver 1603, a wake-up time sent by the second communications device, where the wake-up time is that the second communications device receives the wake-up from the second communications device. Signaling to the fourth interface to enter the work The length of time required for the state; and determining the TA based on the wake-up time.
  • the wake-up signal further includes: resource indication information, where the resource indication information is used to indicate a time domain location and/or a frequency domain location of the first resource.
  • the first resource is a PRACH resource, or an unlicensed resource, or a WU-ACK dedicated resource.
  • the first resource is a WU-ACK dedicated resource.
  • the processor 1601 is further configured to determine an identifier of the second communications device according to the first resource and a one-to-one correspondence between the first resource and an identifier of the second communications device.
  • the WU-ACK includes a signal sequence, and the signal sequence has a one-to-one correspondence with the identifier of the second communication device;
  • the processor 1601 is further configured to determine an identifier of the second communication device according to the signal sequence and a one-to-one correspondence between the signal sequence and an identifier of the second communication device.
  • the WU-ACK includes a signal sequence, and the first resource, the signal sequence, and the identifier of the second communication device have a corresponding relationship;
  • the processor 1601 is further configured to determine the second communication device according to the first resource, the signal sequence, and a correspondence between the signal sequence and identifiers of the second communication device. logo.
  • the processor 1601 is further configured to send, by using the transceiver 1603, signal sequence indication information to the second communication device, where the indication information is used to indicate the signal sequence.
  • the embodiment of the present application further provides a non-volatile storage medium, where the one or more program codes are stored, and when the processor 1601 of the base station 1600 executes the program code, the base station 1600 executes the program. Applying related method steps performed by a base station in any of the above method embodiments.
  • the base station 1600 provided by the embodiment of the present application can perform the related method steps performed by the base station in the foregoing method embodiment of the present application, and the detailed description of each module or unit and each module or unit perform the method embodiment in any of the embodiments of the present application.
  • the technical effects of the related method steps performed by the base station refer to the related description in the method embodiment of the present application, and details are not described herein again.
  • FIG. 17 is a schematic structural diagram of a communication apparatus according to another embodiment of the present disclosure.
  • the communication apparatus of the present embodiment may include a receiving module 1701, a processing module 1702, and a sending module 1703.
  • the communication device of this embodiment further includes a third interface and a fourth interface, which are not shown in the figure.
  • the third interface is for communicating with the first interface of the first communication device
  • the fourth interface is for communicating with the second interface of the first communication device.
  • the receiving module 1701 is configured to receive, by using the third interface, a wake-up signal sent by the first communications device, where the wake-up signal is used to wake up the fourth interface of the second communications device;
  • the processing module 1702 is configured to wake up the fourth interface of the second pass device according to the wakeup signal
  • the sending module 1703 is configured to send a call WU-ACK to the first communications device.
  • the sending module 1703 is specifically configured to: send the WU-ACK to the first communications device by using the third interface; or send the first communications to the first communications by using the fourth interface The device transmits the WU-ACK.
  • the receiving module 1701 is further configured to: receive, by using the fourth interface, downlink data that is sent by the first communications device according to the WU-ACK.
  • the receiving module 1701 is further configured to: after the sending module 1703 sends a WU-ACK to the first communications device, receive, by using the fourth interface, the PDCCH sent by the first communications device.
  • the PDCCH is used for Scheduling the transmission of the downlink data, the PDCCH includes a TA, and the TA is obtained by the second communication device according to the WU-ACK.
  • the sending module 1703 is further configured to: by using the TA, send, by using the fourth interface, a data response message to the first communications apparatus, where the data response message is used to confirm whether the terminal is successfully received. Describe the downlink data.
  • the sending module is specifically configured to: send, by using the third interface, the WU-ACK to the first communications device on a first resource.
  • the first resource is preset, or the first resource is configured by the first communication device to the second communication device.
  • the time offset is preset, or the time offset is configured by the first communication device to the second communication device.
  • the sending module 1703 is further configured to send a wake-up time to the first communications device by using the fourth interface before receiving the wake-up signal sent by the first communications device by using the third interface.
  • the wake-up time is a length of time required by the second communication device to enter the working state from receiving the wake-up signal to the fourth interface;
  • the wake-up time is for the first communication device to determine the TA.
  • the wake-up signal further includes: resource indication information, where the resource indication information is used to indicate a time domain location and/or a frequency domain location of the first resource.
  • the first resource is a PRACH resource, or an unlicensed resource, or a WU-ACK dedicated resource.
  • the first resource is a WU-ACK dedicated resource.
  • the WU-ACK includes a sequence of signals having a one-to-one correspondence with the identification of the second communication device.
  • the WU-ACK includes a signal sequence, and the first resource, the signal sequence, and the identifier of the second communication device have a corresponding relationship.
  • the receiving module 1701 is further configured to: receive, by using the fourth interface, the first communications device to send the signal sequence indication information, where the indication information is used to indicate the signal sequence.
  • the communication mode of the first interface and the third interface is a first communication mode
  • the communication mode of the second interface and the fourth interface is a second communication mode
  • the first communication method is different from the second communication method.
  • the first interface and the third interface are wake-up radio interfaces, and the second interface and the fourth interface are main communication interfaces.
  • first interface and the second interface are different physical interfaces, or the first interface and the second interface are integrated into the same physical interface;
  • the third interface and the fourth interface are different physical interfaces.
  • the communication device described above in this embodiment may be used to perform the technical solution of performing chip execution of the UE/UE in the foregoing method embodiments, and the implementation principle and the technical effect are similar.
  • the function of each module may refer to the corresponding method embodiment. The description is not repeated here.
  • FIG. 18 is a schematic structural diagram of a communication apparatus according to another embodiment of the present disclosure.
  • the second communication device may be configured as: a memory 1801, a processor 1802, a third interface 1803, and a fourth interface 1804, wherein the third interface 1803 and the fourth interface 1804 are different communication interfaces.
  • the third interface 1803 is for communicating with the first interface of the first communication device
  • the fourth interface 1804 is for communicating with the second interface of the first communication device.
  • the memory 1801, the processor 1802, the third interface 1803, and the fourth interface 1804 are connected to each other through a bus 1805.
  • the bus 1805 can be a PCI bus or an ISA bus.
  • the bus 1805 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 18, but it does not mean that there is only one bus or one type of bus.
  • the processor 1802 is configured to execute the program instruction in the memory 1801, and execute the method performed by the UE in any one of the foregoing method embodiments.
  • the program instructions may be implemented in the form of a software functional unit and can be sold or used as a standalone product, which may be any form of computer readable storage medium. Based on such understanding, all or part of the technical solution of the present application may be embodied in the form of a software product, including a plurality of instructions for causing a computer device, specifically a processor 1802, to perform the UE in various embodiments of the present application. All or part of the steps.
  • the foregoing computer readable storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. The medium of the code.
  • the second communication device described above in this embodiment may be used to implement the technical solution of the UE or its internal chip in the foregoing method embodiments of the present application, and the implementation principle and the technical effect thereof are similar, wherein the functions of each module may be implemented by referring to the method. The corresponding description in the example will not be repeated here.
  • FIG. 19 is a schematic structural diagram of a chip according to another embodiment of the present invention.
  • the chip 1900 of the embodiment may include: a processing module 1901, a third interface 1902, and a fourth interface 1903, and a third interface 1902.
  • the fourth interface 1903 is a different communication interface.
  • the processing module 1901 is configured to perform a method performed by a UE in any of the foregoing method embodiments.
  • the chip of this embodiment may further include: a storage module 1904, where the storage module 1904 is configured to store program instructions, where the processing module 1901 is configured to execute the program instructions stored by the storage module 1904, and Execution of the program instructions stored in the storage module 1904 causes the processing module 1901 to perform the method performed by the UE in any of the method embodiments described above.
  • a storage module 1904 configured to store program instructions
  • the processing module 1901 is configured to execute the program instructions stored by the storage module 1904
  • Execution of the program instructions stored in the storage module 1904 causes the processing module 1901 to perform the method performed by the UE in any of the method embodiments described above.
  • the chip described in this embodiment may be used to implement the technical solution of the UE or its internal chip in the foregoing method embodiments of the present application.
  • the implementation principle and the technical effect are similar.
  • the function of each module may refer to the corresponding method embodiment. The description is not repeated here.
  • FIG. 20 is a schematic structural diagram of a communication device according to another embodiment of the present disclosure.
  • the communication device in this embodiment is used as the second communication device, and the second communication device is used as the UE2000.
  • the UE2000 may include: The device 2001, the memory 2002, the receiver 2003, the transceiver 2004, and the bus 2005.
  • the processor 2001, the memory 2002, the receiver 2003, and the transceiver 2004 are connected to one another via a bus 2005.
  • the bus 2005 can be a PCI bus or an EISA bus.
  • the above bus 2005 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 20, but it does not mean that there is only one bus or one type of bus.
  • the memory 2002 is configured to store program instructions.
  • the transceiver 2004 is used as a main communication interface for transmitting and receiving main communication interface signals (for example, LTE/NR signals), and the receiver 2003 is also used as a WUR interface for receiving wake-up signals.
  • main communication interface signals for example, LTE/NR signals
  • WUR interface for receiving wake-up signals.
  • the processor 2001 is configured to execute the program instruction in the memory 2002, and receive, by the receiver 2003, a wake-up signal sent by the first communication device, where the wake-up signal is used to wake up the second communication device.
  • the fourth interface Awakening the transceiver 2004 of the second pass device according to the wake-up signal; and transmitting the WU-ACK to the first communication device through the transceiver 2003.
  • the processor 2001 is further configured to: receive, by using the transceiver 2004, downlink data that is sent by the first communications device according to the WU-ACK.
  • the processor 2001 is further configured to: receive, by using the transceiver 2004, a PDCCH that is sent by the first communications device, where the PDCCH is used to schedule transmission of the downlink data, where the PDCCH includes timing advance
  • the TA is obtained by the second communication device according to the WU-ACK.
  • the processor 2001 is further configured to: by using the TA, send, by the transceiver 2004, a data response message to the first communications apparatus, where the data response message is used to confirm whether the Downstream data.
  • the processor 2001 is specifically configured to: send, by the transceiver 2004, the WU-ACK to the first communications device on a first resource.
  • the first resource is preset, or the first resource is configured by the first communication device to the second communication device.
  • the time offset is preset, or the time offset is configured by the first communication device to the second communication device.
  • the processor 2001 is further configured to send a wakeup to the first communication device by using the transceiver 2004 before receiving the wakeup signal sent by the first communication device by the receiver 2003.
  • the wake-up time is a length of time required for the second communication device to enter the working state from receiving the wake-up signal to the fourth interface;
  • the wake-up time is for the first communication device to determine the TA.
  • the wake-up signal further includes: resource indication information, where the resource indication information is used to indicate a time domain location and/or a frequency domain location of the first resource.
  • the first resource is a PRACH resource, or an unlicensed resource, or a WU-ACK dedicated resource.
  • the first resource is a WU-ACK dedicated resource.
  • the WU-ACK includes a sequence of signals having a one-to-one correspondence with the identification of the second communication device.
  • the WU-ACK includes a signal sequence, and the first resource, the signal sequence, and the identifier of the second communication device have a corresponding relationship.
  • the processor 2001 is further configured to: receive, by the transceiver 2004, the first communications device to send the signal sequence indication information, where the indication information is used to indicate the signal sequence.
  • the embodiment of the present application further provides a non-volatile storage medium, where the one or more program codes are stored in the non-volatile storage medium.
  • the processor 2001 of the UE 2000 executes the program code, the UE 2000 performs the above application.
  • the UE 2000 provided by the embodiment of the present application can perform the related method steps performed by the UE in any of the foregoing method embodiments, and the detailed description of each module or unit, and each module or unit performs the UE in any of the method embodiments of the present application.
  • the related method steps reference may be made to the related description in the method embodiments of the present application, and details are not described herein again.

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  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un dispositif de communication. Un premier dispositif de communication comprend une première interface et une deuxième interface, et un second dispositif de communication comprend une troisième interface et une quatrième interface, la première interface étant utilisée pour communiquer avec la troisième interface, et la deuxième interface étant utilisée pour communiquer avec la quatrième interface. Le procédé comprend les étapes suivantes : le premier dispositif de communication envoie un signal de réveil au second dispositif de communication via la première interface, le signal de réveil étant utilisé pour réveiller la quatrième interface du second dispositif de communication ; et le premier dispositif de communication reçoit un WU-ACK envoyé par le second dispositif de communication. L'invention évite le gaspillage de ressources provoqué par l'envoi, à l'aveugle, de données de liaison descendante, par le premier dispositif de communication au second dispositif de communication, lorsque le second dispositif de communication ne parvient pas à réveiller la quatrième interface (par exemple, le second dispositif de communication n'a pas correctement reçu le signal de réveil ou le second dispositif de communication a reçu correctement le signal de réveil mais n'est pas encore entré dans un état de travail).
PCT/CN2017/108721 2017-09-12 2017-10-31 Procédé et dispositif de communication Ceased WO2019051953A1 (fr)

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US20220201610A1 (en) * 2019-03-27 2022-06-23 Telefonaktiebolaget Lm Ericsson (Publ) Use of Wake-Up Receiver with Bluetooth Low Energy
WO2024234961A1 (fr) * 2023-05-12 2024-11-21 华为技术有限公司 Procédé et appareil de communication
US12309698B2 (en) 2022-06-03 2025-05-20 Qualcomm Incorporated Wakeup signal detection feedback

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CN112787731B (zh) * 2019-11-08 2022-05-24 大唐移动通信设备有限公司 终端省电性能的测试方法、装置、网络模拟器及终端
CN117955783A (zh) * 2022-10-31 2024-04-30 华为技术有限公司 信息传输的方法与装置
CN116530187A (zh) * 2023-03-08 2023-08-01 北京小米移动软件有限公司 一种发送或接收唤醒信号的方法、装置以及存储介质

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US20220201610A1 (en) * 2019-03-27 2022-06-23 Telefonaktiebolaget Lm Ericsson (Publ) Use of Wake-Up Receiver with Bluetooth Low Energy
US12219483B2 (en) * 2019-03-27 2025-02-04 Telefonaktiebolaget Lm Ericsson (Publ) Use of wake-up receiver with Bluetooth low energy
US12309698B2 (en) 2022-06-03 2025-05-20 Qualcomm Incorporated Wakeup signal detection feedback
WO2024234961A1 (fr) * 2023-05-12 2024-11-21 华为技术有限公司 Procédé et appareil de communication

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