WO2022213885A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2022213885A1
WO2022213885A1 PCT/CN2022/084547 CN2022084547W WO2022213885A1 WO 2022213885 A1 WO2022213885 A1 WO 2022213885A1 CN 2022084547 W CN2022084547 W CN 2022084547W WO 2022213885 A1 WO2022213885 A1 WO 2022213885A1
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WIPO (PCT)
Prior art keywords
signal
terminal device
identifier
access network
network device
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PCT/CN2022/084547
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English (en)
Chinese (zh)
Inventor
陈磊
李秉肇
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华为技术有限公司
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Publication of WO2022213885A1 publication Critical patent/WO2022213885A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • 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 communication technologies, and in particular, to a communication method and device.
  • a communication system such as a new radio (NR) system
  • RRC radio resource control
  • RRC inactive active
  • Terminal devices are paged by paging messages.
  • the terminal device can determine whether it is called by monitoring the paging message, and the position where the terminal device monitors the paging message is called a paging opportunity (PO).
  • PO paging opportunity
  • terminal equipment can use discontinuous reception (DRX) mechanism to wake up periodically to monitor paging messages.
  • eDRX In order to reduce the energy consumption of terminal equipment for receiving paging messages, the extended discontinuous reception (eDRX) mechanism is adopted. Introduced, eDRX saves power consumption by increasing the cycle of terminal equipment receiving paging messages.
  • WUS may be a special signal sequence, or may be downlink control information (DCI) carried in a physical downlink control channel (PDCCH).
  • DCI downlink control information
  • the network device In the WUS mechanism, if the network device needs to send a paging message in a PO, it will send WUS at a specific position before the PO, and the terminal device needs to monitor the PO when it receives the WUS; if the network device does not need to be in a PO If the paging message is delivered, the WUS is not sent at a specific position before the PO, and the terminal device does not receive the WUS, so it may not monitor the PO.
  • the WUS technology the number of times that terminal equipment monitors paging messages can be reduced, thereby reducing energy consumption and ensuring the delay of downlink services.
  • the terminal device since the location of the WUS is at a specific location before the PO, the terminal device must perform downlink synchronization before detecting the WUS. When the signal quality of the location where the terminal device is located is not good, multiple synchronizations may be required to successfully detect the WUS signal.
  • downlink synchronization requires power consumption, and the terminal device cannot perform deep sleep during the process of downlink synchronization, and also needs to consume extra power. Therefore, it is an urgent problem to be solved how to reduce the energy consumption of the terminal equipment while meeting the delay requirement of the downlink service.
  • the present application provides a communication method and apparatus for meeting the time delay requirement of downlink services while reducing the energy consumption of terminal equipment.
  • the present application provides a communication method, which is suitable for a scenario where a terminal device monitors a paging message.
  • the execution body of the method is a terminal device or a chip or a module in the terminal device, and the description is made by taking the terminal device as the execution body as an example.
  • the method includes: a terminal device receives a first signal, the first signal includes a first identifier, the first signal is used for paging the terminal device, and the first identifier corresponds to the terminal device; the terminal device processes the first signal by using energy provided by the first signal , and obtain the first identifier; the terminal device determines to initiate random access to the first access network device according to the first identifier.
  • the terminal device when the terminal device receives the first signal, it does not use its own energy to process the first signal, but uses the energy provided by the first signal to process the first signal, so that it does not need to consume the power of the terminal device itself. Reduce the energy consumption of terminal equipment monitoring paging messages.
  • the access network device can page the terminal device at any time, the terminal device does not need to monitor the paging message at the fixed PO, and the terminal device can be woken up in real time, reducing the paging delay. .
  • determining to initiate random access to the first access network device according to the first identifier includes: in the case where it is determined that the first identifier matches the identifier stored in the terminal device, requesting the first access network The device initiates random access.
  • the terminal device may match the first identifier obtained from the first signal with the second identifier in the terminal device, and if the matching is successful, it may be determined that the first identifier corresponds to the terminal device.
  • using the energy provided by the first signal to process the first signal to obtain the first identifier includes: converting a part of the first signal into energy, and using the energy to drive the signal for processing the first signal a processing module; the first signal is processed by the signal processing module, and the first identifier is obtained from the first signal.
  • the method before receiving the first signal, further includes: receiving first indication information from the first access network device, where the first indication information indicates a first characteristic parameter of the first signal, the first characteristic
  • the parameters include one or more of a signal frequency, a signal format or a signal protocol type; it is determined according to the first indication information that it has the ability to receive the first signal. Specifically, when it is determined that the second characteristic parameter of the signal that can be processed matches the first characteristic parameter, it is determined that it has the ability to receive the first signal.
  • capability alignment can be achieved to avoid being unable to be paged by the network side when the first signal cannot be processed.
  • the method before receiving the first signal, further includes: receiving a downlink reference signal; when the signal strength of the received downlink reference signal is greater than or equal to a specified threshold value, determining that it has the ability to receive the first signal or within the coverage area of the first signal.
  • the coverage corresponding to the specified threshold value may be less than or equal to the coverage of the first signal.
  • the downlink reference signal comes from the first access network device; or the downlink reference signal comes from the auxiliary device.
  • second indication information is sent to the first access network device, where the second indication information indicates that the terminal device is located within the signal coverage range of the first signal.
  • the second indication information enables the first access network device to determine the area where the terminal device is located, thereby preventing the terminal device from being unable to be paged when the terminal device is not located within the signal coverage of the first signal.
  • the configuration information from the first access network device is received; the configuration information indicates at least one of the following: indicating a specified threshold value; indicating paging the terminal device through the first signal; indicating the terminal device In the case of receiving a downlink reference signal whose signal strength is greater than or equal to a specified threshold value, passively receive and process the first signal.
  • the first signal comes from a first access network device; or the first signal comes from an auxiliary device.
  • the first identifier is the identifier of the terminal device; or the first identifier is the group identifier of the group in which the terminal device is located.
  • the method before receiving the first signal, further includes: sending capability information to the first access network device or core network device, where the capability information indicates that the terminal device supports the second characteristic parameter of the received signal, and the second The characteristic parameters include one or more of signal frequency, signal format, or signal protocol type.
  • the present application provides a communication method, which is suitable for a scenario where a terminal device monitors a paging message.
  • the execution body of the method is the first access network device or a chip or a module in the first access network device, and the description is given by taking the first access network device as the execution body as an example.
  • the method includes: the first access network device receives a second paging message from the core network device or the second access network device, the second paging message includes a first identifier, and the second paging message is used to indicate paging the first A terminal device corresponding to an identifier; the first access network device sends a first signal to the terminal device, and the first signal includes the first identifier; the first signal is used for paging the terminal device, and provides the terminal device with energy to process the first signal .
  • the second paging message further includes capability information of the terminal device, the capability information indicates that the terminal device supports a second characteristic parameter of the signal processed in a passive manner, and the second characteristic parameter includes the signal frequency, the signal One or more of Format or Signal Protocol Type.
  • the first characteristic parameter of the first signal matches the second characteristic parameter, and the first characteristic parameter includes a signal frequency, a signal format or a signal protocol type one or more of the .
  • sending the first signal to the terminal device includes: sending the first signal to the terminal device; or, instructing the auxiliary device to send the first signal to the terminal device.
  • the method before receiving the second paging message from the core network device or the second access network device, the method further includes: sending configuration information to the terminal device; the configuration information indicates at least one of the following: indicating specifying Threshold value; the configuration information indicates that the terminal equipment is paging through the first signal; when the configuration information indicates that the terminal equipment receives a downlink reference signal whose signal strength is greater than or equal to the specified threshold value, the first signal is passively received and processed .
  • the downlink reference signal is sent to the terminal device; or, the auxiliary device is instructed to send the downlink reference signal to the terminal device.
  • second indication information from the terminal device is received, where the second indication information indicates that the terminal device is located within the signal coverage of the first signal.
  • the first identifier is the identifier of the terminal device; or the first identifier is the group identifier of the group in which the terminal device is located.
  • the present application provides a communication method, which is suitable for a scenario where a terminal device monitors a paging message.
  • the execution body of the method is a terminal device or a chip or a module in the terminal device, and the description is made by taking the terminal device as the execution body as an example.
  • the method includes: the terminal device receives a second signal from the access network device, the second signal includes a first identifier, the second signal is used for instructing to monitor a first paging message, and the first paging message is used for paging the terminal device;
  • the second signal is processed by using the energy provided by the second signal to obtain the first identification; if it corresponds to the first identification, the first paging message is monitored.
  • monitoring the first paging message includes: monitoring the first paging message when it is determined that the first identifier matches the identifier stored in the terminal device.
  • the terminal device may match the first identifier obtained from the second signal with the second identifier in the terminal device, and if the matching is successful, it may be determined that the first identifier corresponds to the terminal device.
  • using the energy provided by the second signal to process the second signal to obtain the first identifier includes: converting a part of the second signal into energy, and using the energy to drive the signal for processing the second signal A processing module; the second signal is processed by the signal processing module, and the first identifier is obtained from the second signal.
  • the method before receiving the second signal, further includes: receiving first configuration information from the access network device, where the first configuration information indicates a characteristic parameter of the second signal, and the characteristic parameter of the second signal includes the signal One or more of a frequency, a signal format, or a signal protocol type; the ability to receive the second signal is determined according to the first configuration information. Specifically, when it is determined that the characteristic parameter of the signal that can be processed matches the characteristic parameter of the second signal, it is determined that it has the ability to receive the second signal.
  • capability alignment can be achieved to avoid being unable to be paged by the network side when the second signal cannot be processed.
  • the method before receiving the second signal, further includes: receiving a downlink reference signal; when the signal strength of the received downlink reference signal is greater than or equal to a specified threshold value, determining that it has the ability to receive the second signal or within the coverage area of the second signal.
  • the coverage corresponding to the specified threshold value may be less than or equal to the coverage of the second signal.
  • the downlink reference signal comes from an access network device; or the downlink reference signal comes from an auxiliary device.
  • the second configuration information is sent to the access network device, where the second configuration information indicates that the terminal device is located within the signal coverage range of the second signal.
  • the second configuration information enables the access network device to determine the area where the terminal device is located, thereby preventing the terminal device from being unable to be paged through the second signal when the terminal device is not located within the signal coverage of the second signal.
  • third configuration information from the access network device is received; the third configuration information indicates at least one of the following: indicates a specified threshold value; indicates that a second configuration information including an identifier corresponding to the terminal device is received.
  • the signal is detected, monitor the first paging message; instruct the terminal device to receive and process the second signal in a passive manner when receiving a downlink reference signal with a signal strength greater than or equal to a specified threshold.
  • the first identifier is the identifier of the terminal device; or the first identifier is the group identifier of the group in which the terminal device is located.
  • the method before receiving the second signal, further includes: sending capability information to the access network device or the core network device, where the capability information indicates that the terminal device supports the second characteristic parameter of the received signal, the second characteristic parameter Include one or more of signal frequency, signal format, or signal protocol type.
  • the present application provides a communication method, which is suitable for a scenario where a terminal device monitors a paging message.
  • the execution body of the method is the access network device or a chip or a module in the access network device, and the description is made by taking the access network device as the execution body as an example.
  • the method includes: an access network device sends a second signal to a terminal device, the second signal includes a first identifier, the second signal is used for instructing to monitor the first paging message, and provides the terminal device with energy to process the second signal, the first A paging message is used for paging the terminal equipment; the first paging message is sent to the terminal equipment.
  • the terminal device when the terminal device receives the second signal, it does not use its own energy to process the second signal, but uses the energy provided by the second signal to process the second signal, so that it does not need to consume the power of the terminal device itself. Reduce the energy consumption of terminal equipment monitoring paging messages. At the same time, the terminal device monitors the paging message only when the first identifier is obtained, which can reduce the number of times of monitoring the paging message and reduce energy consumption. In addition, the terminal device only enters the RRC connection state when it monitors the paging message paging itself, so as to avoid being woken up by mistake and improve reliability.
  • the capability information of the terminal device before sending the second signal to the terminal device, the capability information of the terminal device is obtained, the capability information indicates that the terminal device supports the second characteristic parameter of the signal processed in a passive manner, and the second characteristic parameter includes the signal One or more of frequency, signal format or signal protocol type; determine that the characteristic parameter of the second signal matches the second characteristic parameter, and the characteristic parameter of the second signal includes one of signal frequency, signal format or signal protocol type or more.
  • sending the second signal to the terminal device includes: sending the second signal to the terminal device; or, instructing the auxiliary device to send the second signal to the terminal device.
  • the method before sending the second signal to the terminal device, the method further includes: sending first configuration information to the terminal device, where the first configuration information indicates characteristic parameters of the second signal, and the characteristic parameters of the second signal include the signal One or more of frequency, signal format, or signal protocol type.
  • the downlink reference signal is sent to the terminal device; or, the auxiliary device is instructed to send the downlink reference signal to the terminal device.
  • the method before sending the second signal to the terminal device, the method further includes: receiving second configuration information from the terminal device, where the second configuration information indicates that the terminal device is located within the signal coverage of the second signal.
  • the method further includes: sending third configuration information to the terminal device; the third configuration information indicates at least one of the following: indicating a specified threshold value; indicating receiving a second configuration information including an identifier corresponding to the terminal device
  • the terminal device monitors the first paging message; instruct the terminal device to receive and process the second signal in a passive manner when receiving a downlink reference signal with a signal strength greater than or equal to a specified threshold.
  • the coverage corresponding to the specified threshold value may be less than or equal to the coverage of the second signal.
  • the first identifier is the identifier of the terminal device; or the first identifier is the group identifier of the group in which the terminal device is located.
  • the present application provides a communication method.
  • the execution body of the method is a terminal device or a chip or a module in the terminal device.
  • the terminal device is used as the execution body as an example for description.
  • the method includes: a terminal device receives a third signal from an access network device, the third signal includes third indication information, the third indication information instructs the terminal device to receive a system message, and provides the terminal device with energy to process the third signal; using The energy provided by the third signal processes the third signal to obtain third indication information; and receives the system message from the access network device according to the third indication information.
  • the system message is system information SI or a public early warning system PWS message.
  • the third signal further includes time information, where the time information indicates the time at which the system message is received.
  • the third indication information includes the first identifier; if it corresponds to the first identifier, the system message from the access network device is received according to the third indication information.
  • the terminal device may match the first identifier obtained from the third signal with the second identifier in the terminal device, and if the matching is successful, it may be determined that the first identifier corresponds to the terminal device.
  • using the energy provided by the third signal to process the third signal to obtain the third indication information includes: converting a part of the third signal into energy, and using the energy to drive a sensor for processing the third signal A signal processing module; the third signal is processed by the signal processing module, and the third indication information is obtained from the third signal.
  • the method before receiving the third signal, further includes: receiving first information from the access network device, where the first information indicates characteristic parameters of the third signal, and the characteristic parameters of the third signal include signal frequency, One or more of the signal format or the signal protocol type; it is determined according to the first information that it has the ability to receive the third signal. Specifically, when it is determined that the characteristic parameter of the signal that can be processed matches the characteristic parameter of the third signal, it is determined that it has the ability to receive the third signal.
  • the method before receiving the third signal, further includes: receiving a downlink reference signal; when the signal strength of the received downlink reference signal is greater than or equal to a specified threshold value, determining that it has the ability to receive the third signal or within the coverage area of a third signal.
  • the coverage corresponding to the specified threshold value may be less than or equal to the coverage of the third signal.
  • the downlink reference signal comes from an access network device; or the downlink reference signal comes from an auxiliary device.
  • second information is sent to the access network device, where the second information indicates that the terminal device is located within the signal coverage of the third signal.
  • third information is received from the access network device; the third information indicates at least one of the following: indicating a specified threshold value; indicating that the terminal device receives a signal strength greater than or equal to the specified threshold value
  • the third signal is received and processed in a passive manner.
  • the third signal comes from an access network device; or the third signal comes from an auxiliary device.
  • the first identifier is the identifier of the terminal device; or the first identifier is the group identifier of the group in which the terminal device is located.
  • the method before receiving the third signal, further includes: sending capability information to the access network device or the core network device, where the capability information indicates that the terminal device supports the second characteristic parameter of the received signal, the second characteristic parameter Include one or more of signal frequency, signal format, or signal protocol type.
  • the present application provides a communication method, which is suitable for a scenario where a terminal device monitors a paging message.
  • the execution body of the method is the access network device or a chip or a module in the access network device, and the description is made by taking the access network device as the execution body as an example.
  • the method includes: an access network device sends a third signal to a terminal device, the third signal includes third indication information, and provides the terminal device with energy to process the third signal, the third indication information is used for to instruct the terminal device to receive the system message; to send the system message to the terminal device.
  • the third signal instructs the terminal device to receive the system message, which can significantly reduce the energy consumption of the terminal device, and can ensure that the terminal device accurately receives the system message.
  • the terminal device acquires the third signal and detects the message indication information, it receives the system message, which can avoid being woken up by mistake and improve reliability.
  • the system message is system information SI or a public early warning system PWS message.
  • the third signal further includes time information, where the time information indicates the time at which the system message is received.
  • the capability information of the terminal device before sending the third signal to the terminal device, the capability information of the terminal device is obtained, the capability information indicates that the terminal device supports the second characteristic parameter of the signal processed in a passive manner, and the second characteristic parameter includes the signal One or more of frequency, signal format or signal protocol type; determine that the characteristic parameter of the third signal matches the second characteristic parameter, and the characteristic parameter of the third signal includes one of signal frequency, signal format or signal protocol type or more.
  • sending the third signal to the terminal device includes: sending the third signal to the terminal device; or, instructing the auxiliary device to send the third signal to the terminal device.
  • the method before sending the third signal to the terminal device, the method further includes: sending first information to the terminal device, where the first information indicates characteristic parameters of the third signal, and the characteristic parameters of the third signal include the signal frequency, One or more of Signal Format or Signal Protocol Type.
  • the downlink reference signal is sent to the terminal device; or, the auxiliary device is instructed to send the downlink reference signal to the terminal device.
  • the method before sending the third signal to the terminal device, the method further includes: receiving second information from the terminal device, where the second information indicates that the terminal device is located within the signal coverage range of the third signal.
  • the method further includes: sending third information to the terminal device; the third information indicates at least one of the following: indicating a specified threshold value; indicating that the terminal device receives a signal whose signal strength is greater than or equal to the specified threshold value.
  • the third signal is received and processed in a passive manner. The coverage corresponding to the specified threshold value may be less than or equal to the coverage of the third signal.
  • the first identifier is the identifier of the terminal device; or the first identifier is the group identifier of the group in which the terminal device is located.
  • the present application further provides a communication device, the communication device having any method provided in the first aspect or the third aspect or the fifth aspect.
  • the communication device may be implemented by hardware, or by executing corresponding software by hardware.
  • the hardware or software includes one or more units or modules corresponding to the above functions.
  • the communication apparatus includes: a processor, and the processor is configured to support the communication apparatus to perform the corresponding functions of the terminal device in the above-described method.
  • the communication device may also include a memory, which may be coupled to the processor, which holds program instructions and data necessary for the communication device.
  • the communication apparatus further includes an interface circuit, where the interface circuit is configured to support communication between the communication apparatus and equipment such as access network equipment.
  • the communication device includes corresponding functional modules, which are respectively used to implement the steps in the above method.
  • the functions can be implemented by hardware, or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the communication apparatus includes a processing unit and a communication unit, and these units can perform the corresponding functions in the foregoing method examples.
  • these units can perform the corresponding functions in the foregoing method examples.
  • the communication unit is used for receiving the first signal, the first signal includes a first identification, the first signal is used for paging the terminal equipment, and the first identification corresponds to the terminal equipment; the processing unit is used for processing the first signal using the energy provided by the first signal.
  • a signal is obtained to obtain the first identifier; and according to the first identifier, it is determined to initiate random access to the first access network device.
  • the processing unit determines to initiate random access to the first access network device according to the first identifier, which includes: in the case that it is determined that the first identifier matches the identifier stored in the terminal device, sending a random access to the first access network device.
  • the network access device initiates random access.
  • the processing unit is specifically configured to: convert a part of the first signal into energy, and use the energy to drive a signal processing module for processing the first signal; process the first signal through the signal processing module, and The first identification is obtained from the first signal.
  • the communication unit before the communication unit receives the first signal: the communication unit is further configured to receive first indication information from the first access network device, where the first indication information indicates the first characteristic parameter of the first signal , the first characteristic parameter includes one or more of signal frequency, signal format or signal protocol type; the processing unit is further configured to determine the capability of receiving the first signal according to the first indication information.
  • the communication unit before the communication unit receives the first signal: the communication unit is further configured to receive a downlink reference signal; the processing unit is further configured to receive a signal strength of the downlink reference signal greater than or equal to a specified threshold value When , it is determined that it has the ability to receive the first signal.
  • the downlink reference signal comes from the first access network device, or the downlink reference signal comes from the auxiliary device.
  • the communication unit is further configured to: send second indication information to the first access network device, where the second indication information indicates that the terminal device is located within the signal coverage range of the first signal.
  • the communication unit is further configured to: receive configuration information from the first access network device; the configuration information indicates at least one of the following: indicating a specified threshold value; the configuration information indicates paging through the first signal Terminal equipment; when the configuration information indicates that the terminal equipment receives a downlink reference signal whose signal strength is greater than or equal to a specified threshold value, the first signal is passively received and processed.
  • the first signal comes from a first access network device; or the first signal comes from an auxiliary device.
  • the first identifier is the identifier of the terminal device; or the first identifier is the group identifier of the group in which the terminal device is located.
  • the communication unit before the communication unit receives the first signal, the communication unit is further configured to: send capability information to the first access network device or core network device, where the capability information indicates that the terminal device supports the first signal of the received signal.
  • the second characteristic parameter includes one or more of signal frequency, signal format or signal protocol type.
  • a communication unit configured to receive a second signal from the access network device, where the second signal includes a first identifier, the second signal is used to instruct to monitor the first paging message, and the first paging message is used for paging the terminal device;
  • the processing unit is configured to process the second signal by using the energy provided by the second signal to obtain the first identification; if it corresponds to the first identification, monitor the first paging message through the communication unit.
  • the processing unit is specifically configured to: monitor the first paging message through the communication unit when it is determined that the first identifier matches the identifier stored in the terminal device.
  • the processing unit is specifically configured to: match the first identification obtained from the second signal with the second identification in the terminal device, and if the matching is successful, it can be determined that the first identification and the terminal device correspond.
  • the processing unit processes the second signal by using the energy provided by the second signal to obtain the first identifier, including: converting a part of the second signal into energy, and using the energy to drive the second signal for processing the second signal.
  • the signal processing module the second signal is processed by the signal processing module, and the first identification is obtained from the second signal.
  • the communication unit before the communication unit receives the second signal, the communication unit is further configured to: receive first configuration information from the access network device, where the first configuration information indicates characteristic parameters of the second signal, and the second The characteristic parameters of the signal include one or more of the signal frequency, the signal format or the signal protocol type; the processing unit is further configured to: determine the capability of receiving the second signal according to the first configuration information. Specifically, when it is determined that the characteristic parameter of the signal that can be processed matches the characteristic parameter of the second signal, it is determined that it has the ability to receive the second signal.
  • the communication unit before the communication unit receives the second signal, the communication unit is further configured to: receive a downlink reference signal; when the signal strength of the received downlink reference signal is greater than or equal to a specified threshold value, determine that the The ability to receive the second signal or being within range of the second signal.
  • the coverage corresponding to the specified threshold value may be less than or equal to the coverage of the second signal.
  • the downlink reference signal comes from an access network device; or the downlink reference signal comes from an auxiliary device.
  • the second configuration information is sent to the access network device, where the second configuration information indicates that the terminal device is located within the signal coverage range of the second signal.
  • the communication unit is further configured to: receive third configuration information from the access network device; the third configuration information indicates at least one of the following: indicate a specified threshold value; When the corresponding identified second signal, monitor the first paging message; instruct the terminal device to receive and process the second signal passively when receiving a downlink reference signal with a signal strength greater than or equal to a specified threshold.
  • the first identifier is the identifier of the terminal device; or the first identifier is the group identifier of the group in which the terminal device is located.
  • the communication unit before the communication unit receives the second signal, the communication unit is further configured to: send capability information to the access network device or the core network device, where the capability information indicates that the terminal device supports the second feature of the received signal parameter, and the second characteristic parameter includes one or more of signal frequency, signal format or signal protocol type.
  • a communication unit configured to receive a third signal from the access network device, where the third signal includes third indication information, the third indication information instructs the terminal device to receive the system message, and provides the terminal device with energy to process the third signal;
  • a processing unit configured to process the third signal by using the energy provided by the third signal to obtain third indication information
  • the communication unit is further configured to receive a system message from the access network device according to the third indication information.
  • the system message is system information SI or a public early warning system PWS message.
  • the third signal further includes time information, where the time information indicates the time at which the system message is received.
  • the third indication information includes the first identifier; if it is determined to correspond to the first identifier, the communication unit receives the system message from the access network device according to the third indication information.
  • the communication unit is further configured to: match the first identification obtained from the third signal with the second identification in the terminal device, and if the matching is successful, it can be determined that the first identification and the terminal device correspond.
  • the processing unit is specifically configured to: convert a part of the third signal into energy, and use the energy to drive a signal processing module for processing the third signal; process the third signal through the signal processing module, and The third indication information is obtained from the third signal.
  • the communication unit before the communication unit receives the third signal, the communication unit is further configured to: receive first information from the access network device, where the first information indicates a characteristic parameter of the third signal, and the The characteristic parameters include one or more of signal frequency, signal format or signal protocol type; the processing unit is further configured to determine the capability of receiving the third signal according to the first information. Specifically, when it is determined that the characteristic parameter of the signal that can be processed matches the characteristic parameter of the third signal, it is determined that it has the ability to receive the third signal.
  • the communication unit before the communication unit receives the third signal, the communication unit is further configured to: receive a downlink reference signal; the processing unit is further configured to: when the signal strength of the received downlink reference signal is greater than or equal to the specified gate When the limit is reached, it is determined that it has the ability to receive the third signal or is within the coverage range of the third signal.
  • the coverage corresponding to the specified threshold value may be less than or equal to the coverage of the third signal.
  • the downlink reference signal comes from an access network device; or the downlink reference signal comes from an auxiliary device.
  • the communication unit is further configured to: send second information to the access network device, where the second information indicates that the terminal device is located within the signal coverage of the third signal.
  • the communication unit is further configured to: receive third information from the access network device; the third information indicates at least one of the following: indicating a specified threshold value; indicating that the signal strength received by the terminal device is greater than or In the case of the downlink reference signal equal to the specified threshold value, passively receive and process the third signal.
  • the third signal comes from an access network device; or the third signal comes from an auxiliary device.
  • the first identifier is the identifier of the terminal device; or the first identifier is the group identifier of the group in which the terminal device is located.
  • the communication unit before the communication unit receives the third signal, the communication unit is further configured to: send capability information to the access network device or the core network device, where the capability information indicates that the terminal device supports the second feature of the received signal parameter, and the second characteristic parameter includes one or more of signal frequency, signal format or signal protocol type.
  • the present application further provides a communication device, the communication device having any method provided in the second aspect or the fourth aspect or the sixth aspect.
  • the communication device may be implemented by hardware, or by executing corresponding software by hardware.
  • the hardware or software includes one or more units or modules corresponding to the above functions.
  • the communication apparatus includes: a processor, where the processor is configured to support the communication apparatus to perform the corresponding functions of the access network device in the above-described method.
  • the communication device may also include a memory, which may be coupled to the processor, which holds program instructions and data necessary for the communication device.
  • the communication apparatus further includes an interface circuit, and the interface circuit is used to support communication between the communication apparatus and equipment such as terminal equipment.
  • the communication device includes corresponding functional modules, which are respectively used to implement the steps in the above method.
  • the functions can be implemented by hardware, or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the communication apparatus includes a processing unit and a communication unit, and these units can perform the corresponding functions in the foregoing method examples.
  • these units can perform the corresponding functions in the foregoing method examples.
  • a communication unit configured to receive a second paging message from the core network device or the second access network device, where the second paging message includes the first identifier, and the second paging message is used to instruct the terminal corresponding to the first identifier to be paged equipment;
  • the communication unit is further configured to send a first signal to the terminal device, where the first signal includes the first identifier; the first signal is used for paging the terminal device, and provides the terminal device with energy to process the first signal.
  • the second paging message further includes capability information of the terminal device, the capability information indicates that the terminal device supports a second characteristic parameter of the signal processed in a passive manner, and the second characteristic parameter includes the signal frequency, the signal One or more of Format or Signal Protocol Type.
  • the processing unit is configured to: determine that the first characteristic parameter of the first signal matches the second characteristic parameter, where the first characteristic parameter includes one or more of a signal frequency, a signal format or a signal protocol type item.
  • the communication unit sending the first signal to the terminal device includes: instructing the auxiliary device to send the first signal to the terminal device.
  • the communication unit before the communication unit receives the second paging message from the core network device or the second access network device, the communication unit is further configured to:
  • the configuration information indicates at least one of the following: indicating a specified threshold value; the configuration information indicates that the terminal device is paging through the first signal; In the case of a downlink reference signal, the first signal is received and processed in a passive manner.
  • the communication unit is further configured to: send a downlink reference signal to the terminal device, or instruct the auxiliary device to send a downlink reference signal to the terminal device.
  • the communication unit is further configured to: receive second indication information from the terminal device, where the second indication information indicates that the terminal device is located within the signal coverage of the first signal.
  • the first identifier is the identifier of the terminal device; or the first identifier is the group identifier of the group in which the terminal device is located.
  • the communication unit is used to send a second signal to the terminal device, the second signal includes the first identifier, the second signal is used to instruct to monitor the first paging message, and provides the terminal device with energy to process the second signal, the first paging
  • the message is used for paging the terminal equipment; the communication unit is also used for sending the first paging message to the terminal equipment.
  • the communication unit before the communication unit sends the second signal to the terminal device, the communication unit is further configured to: acquire capability information of the terminal device, where the capability information indicates that the terminal device supports the second signal of the passively processed signal.
  • characteristic parameter the second characteristic parameter includes one or more of the signal frequency, the signal format or the signal protocol type; it is determined that the characteristic parameter of the second signal matches the second characteristic parameter, and the characteristic parameter of the second signal includes the signal frequency, the signal One or more of Format or Signal Protocol Type.
  • the communication unit before the communication unit sends the second signal to the terminal device, the communication unit is further configured to: send the second signal to the terminal device; or instruct the auxiliary device to send the second signal to the terminal device.
  • the communication unit before the communication unit sends the second signal to the terminal device, the communication unit is further configured to: send first configuration information to the terminal device, where the first configuration information indicates characteristic parameters of the second signal, and the second The characteristic parameters of the signal include one or more of the signal frequency, the signal format, or the signal protocol type.
  • the communication unit is specifically configured to: send the downlink reference signal to the terminal device; or instruct the auxiliary device to send the downlink reference signal to the terminal device.
  • the communication unit before the communication unit sends the second signal to the terminal device, the communication unit is further configured to: receive second configuration information from the terminal device, where the second configuration information indicates that the terminal device is located in the signal of the second signal within coverage.
  • the communication unit is further configured to: send third configuration information to the terminal device; the third configuration information indicates at least one of the following: indicating a specified threshold value; indicating that the received identification includes an identifier corresponding to the terminal device
  • the communication unit is further configured to: send third configuration information to the terminal device; the third configuration information indicates at least one of the following: indicating a specified threshold value; indicating that the received identification includes an identifier corresponding to the terminal device
  • monitor the first paging message instruct the terminal device to receive and process the second signal passively when receiving a downlink reference signal with a signal strength greater than or equal to the specified threshold.
  • the coverage corresponding to the specified threshold value may be less than or equal to the coverage of the second signal.
  • the first identifier is the identifier of the terminal device; or the first identifier is the group identifier of the group in which the terminal device is located.
  • a communication unit configured to send a third signal to a terminal device, where the third signal includes third indication information, and provide the terminal device with energy to process the third signal, where the third indication information is used to indicate the
  • the terminal device receives the system message; the communication unit is further configured to send the system message to the terminal device.
  • the system message is system information SI or a public early warning system PWS message.
  • the third signal further includes time information, where the time information indicates the time at which the system message is received.
  • the communication unit before the communication unit sends the third signal to the terminal device, the communication unit is further configured to: acquire capability information of the terminal device, where the capability information indicates that the terminal device supports the second signal of the passively processed signal.
  • characteristic parameter the second characteristic parameter includes one or more of the signal frequency, the signal format or the signal protocol type; determine that the characteristic parameter of the third signal matches the second characteristic parameter, and the characteristic parameter of the third signal includes the signal frequency, the signal One or more of Format or Signal Protocol Type.
  • the communication unit before the communication unit sends the third signal to the terminal device, the communication unit is further configured to: send the third signal to the terminal device; or instruct the auxiliary device to send the third signal to the terminal device.
  • the communication unit before the communication unit sends the third signal to the terminal device, the communication unit is further configured to: send first information to the terminal device, where the first information indicates the characteristic parameter of the third signal, and the The characteristic parameters include one or more of signal frequency, signal format, or signal protocol type.
  • the downlink reference signal is sent to the terminal device; or, the auxiliary device is instructed to send the downlink reference signal to the terminal device.
  • the communication unit before the communication unit sends the third signal to the terminal device, the communication unit is further configured to: receive second information from the terminal device, where the second information indicates that the terminal device is located in the signal coverage area of the third signal Inside.
  • the communication unit is further configured to: send third information to the terminal device; the third information indicates at least one of the following: indicating a specified threshold value; indicating that the signal strength received by the terminal device is greater than or equal to the specified threshold
  • the third signal is received and processed in a passive manner.
  • the coverage corresponding to the specified threshold value may be less than or equal to the coverage of the third signal.
  • the first identifier is the identifier of the terminal device; or the first identifier is the group identifier of the group in which the terminal device is located.
  • a communication device comprising a processor and an interface circuit, the interface circuit is configured to receive signals from other communication devices other than the communication device and transmit to the processor or send signals from the processor
  • the processor is used to execute the computer program or instructions stored in the memory, so as to realize any one of the first aspect, the third aspect or the fifth aspect, and any one of the aspects.
  • a tenth aspect provides a communication device, comprising a processor and an interface circuit, the interface circuit is configured to receive signals from other communication devices other than the communication device and transmit to the processor or send signals from the processor
  • the processor is used to execute the computer program or instructions stored in the memory, so as to realize any one of the second aspect, the fourth aspect or the sixth aspect, and any one of the aspects.
  • a computer-readable storage medium is provided, and a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is executed on a computer, the computer is made to implement the aforementioned first A method in any of the aspects to the sixth aspect, and any possible implementation of any of the aspects.
  • a twelfth aspect provides a computer program product storing computer-readable instructions, which, when the computer-readable instructions are executed on a computer, enable the computer to implement any one of the foregoing first to sixth aspects , and a method in any possible implementation of any aspect.
  • a thirteenth aspect provides a system-on-chip, the system-on-chip includes a processor, and may further include a memory for executing computer programs or instructions stored in the memory, so that the system-on-chip implements the foregoing first to sixth aspects A method of any aspect, and any possible implementation of any aspect.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • a fourteenth aspect provides a communication system, where the system includes the apparatus (eg, terminal equipment) described in the ninth aspect and the apparatus (eg, access network equipment) described in the tenth aspect.
  • the apparatus eg, terminal equipment
  • the apparatus eg, access network equipment
  • FIG. 1 is a schematic diagram of a network architecture applicable to the present application
  • FIG. 2 is a schematic structural diagram of a passive module provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a signal coverage area provided by an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a signal coverage area provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 10 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 11 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • NR NR
  • the terminal device may be a device with a wireless transceiver function, and may also be referred to as user equipment (user equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, Remote terminal, mobile device, user terminal, wireless communication device, user agent or user device, etc.
  • user equipment user equipment
  • UE user equipment
  • an access terminal a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, Remote terminal, mobile device, user terminal, wireless communication device, user agent or user device, etc.
  • the terminal device in this embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, an industrial Wireless terminal in industrial control, wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, transportation safety Wireless terminals in smart cities, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • a mobile phone mobile phone
  • a tablet computer (Pad)
  • a computer with a wireless transceiver function a virtual reality (VR) terminal, an augmented reality (AR) terminal
  • an industrial Wireless terminal in industrial control wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, transportation safety Wireless terminals in smart cities, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the access network device can connect the terminal device to a radio access network (RAN), which can be a wireless access device under various standards, for example, it can be the next generation in the NR system Base station (next Generation node B, gNB), which can be evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC) or Node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), wireless fidelity (wireless fidelity, Access point (AP), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP), etc.
  • RAN radio access network
  • the gNB or transmission point (TRP or TP) in the 5G system can also be a network node that constitutes a gNB or transmission point, such as a baseband unit ( BBU), or DU under a centralized-distributed (central unit-distributed, CU-DU) architecture, etc.
  • BBU baseband unit
  • CU-DU central unit-distributed
  • Core network equipment which can be used to manage the access and mobility of terminal equipment, for example, it can be an Access and Mobility Management Function (AMF) network element; it can also be a device for billing equipment
  • AMF Access and Mobility Management Function
  • the device managed by the user plane may be, for example, a UPF network element, which is not limited in this application.
  • FIG. 1 shows a schematic diagram of a communication system architecture suitable for this application.
  • a core network device, an access network device 1, an access network device 2, and multiple terminal devices form a communication system.
  • terminal equipment 1 and terminal equipment 2 communicate with access network equipment 1
  • terminal equipment 3 to terminal equipment 5 communicate with access network equipment 2
  • access network equipment 2 can communicate with each other.
  • a terminal device in an RRC idle state or an RRC inactive state needs to monitor paging messages.
  • the process for the terminal device to monitor the paging message is as follows: the terminal device monitors the PDCCH at the PO, and determines whether there is a paging message that the terminal device needs to receive according to the monitored PDCCH.
  • the monitored PDCCH includes downlink control information (DCI) scrambled with paging radio network temporary identity (P-RNTI), then the physical downlink shared channel ( The paging message is received in the physical downlink shared channel, PDSCH); if it is determined that the paging message is a paging message for paging itself, the terminal device switches to the RRC connected state, otherwise it maintains the RRC idle state or the RRC inactive state.
  • DCI downlink control information
  • P-RNTI paging radio network temporary identity
  • the process of monitoring paging messages consumes energy and reduces the working time of the terminal device.
  • a terminal device may include a passive module.
  • the passive module does not require the terminal device to provide it with power or only needs the terminal device to provide it with a very small amount of power during operation.
  • the received signal is converted into energy (ie, electrical energy), and the energy is used to drive its own circuit to work.
  • the specific implementation manner of the passive module is not limited.
  • FIG. 2 a schematic structural diagram of a terminal device provided in an embodiment of the present application is shown.
  • the terminal device includes modules such as passive modules, radio frequency modules, and antennas.
  • the RF module can process signals in cellular communication systems such as NR systems and LTE systems, as well as signals in the Institute of Electrical and Electronics Engineers (IEEE) 802.11 series of wireless local area networks.
  • the radio frequency module may include a radio frequency front-end device, a radio frequency integrated circuit (radio frequency integrated circuit, RFIC), etc., which is not specifically limited.
  • the passive module may be divided into multiple modules according to functions, for example, including an energy collection module, a signal processing module (or referred to as a protocol stack processing module), and a storage module.
  • the energy collection module can convert the wireless signal received through the antenna into energy, and provide the energy to the signal processing module.
  • the energy collection module can include coupling elements, such as coils and microstrip antennas; the signal processing module can use The energy provided by the energy harvesting module drives itself to work, so that the wireless signal can be decoded and demodulated.
  • the storage module may store information such as the identification of the terminal device, which is not specifically limited. It should be noted that the division of the foregoing modules is only an example, and may be adjusted according to actual conditions in practical applications, and how the specific circuits of the foregoing modules are implemented is not limited in this embodiment of the present application.
  • the conversion of wireless signals into energy is mainly based on the principle of electromagnetic conversion.
  • the passive module of the terminal device receives electromagnetic waves (ie wireless signals) through the antenna, an induced current will be generated to obtain energy.
  • the passive module can obtain energy from the wireless signal through electromagnetic coupling and/or inductive coupling.
  • the energy harvesting module in the wireless module can include an electromagnetic coupling circuit. When the wireless signal passes through the coupling circuit, an induced current will be generated, thereby obtaining energy.
  • passive modules may be divided into non-energy storage types, energy storage types and semi-active circuits.
  • Non-energy storage types refer to passive modules that use energy harvesting modules to collect energy while working;
  • energy storage types refer to passive modules that can use The energy harvesting module collects energy for a period of time, and then uses this part of the energy to work.
  • the energy storage type passive circuit can work at a higher power and can perform more complex protocol processing, but the data The transmission efficiency is low.
  • Semi-active circuits require a small fraction of the power provided by the end equipment to increase the efficiency of passive module operation. It should be noted that this application does not limit the types of passive modules.
  • the terminal device can convert a part of the time domain or power domain of the received signal into energy, and use the energy to process the signal, it can be considered that the terminal device has the ability to process the signal in a passive manner .
  • the signal received by the terminal device includes two frames, the first frame is used for converting into energy, when the terminal device receives the first frame of the signal, it is converted into energy by the energy collection module, and the second frame is used for transmitting information , when the terminal device receives the second frame of the signal, it performs operations such as decoding it through the signal processing module.
  • a network device transmits both energy and information through a signal.
  • a frame in the signal can provide energy to the terminal device and can also transmit information.
  • the terminal device uses the power of the received signal in the power domain. Power splitting techniques to obtain a signal for conversion to energy and a signal that carries information.
  • the access network equipment can support the use of wireless simultaneous interpretation (simultaneous wireless information and power transfer, SWIPT) technology to send wireless signals that can provide energy to terminal equipment.
  • SWIPT wireless simultaneous interpretation
  • the wireless signal sent by the access network equipment using the SWIPT technology is divided into two parts in the time domain or power domain, one part is used to convert into energy, and the other part is used to carry information.
  • the frequencies of wireless signals capable of providing energy may be within the licensed spectrum range or within the unlicensed spectrum range.
  • the frequency of the first signal is located in a frequency range (frequency range, FR) 1 or FR2; the frequency of the first signal may also be located in a frequency range of 2.4 GHz, and so on.
  • the first signal may also have a specific waveform, for example, the first signal may include a continuous sine wave.
  • a wireless signal that can provide energy, such as the first signal can be modulated using relatively simple methods such as amplitude modulation, such as on-off keying (OOK), amplitude shift keying (ASK), frequency shift Keying (frequency shift keying, FSK), phase shift keying (phase shift keying, PSK), Gaussian frequency shift keying (gaussian frequency-shift keying, GFSK), Gaussian minimum frequency shift keying (gaussian minimum shift-frequency) keying, GMSK), quadrature amplitude modulation (QAM), or differential phase shift keying (DPSK), which is convenient for terminal equipment to use a simple circuit to process it. Further, it can be processed by Save power amplifier (PA) and reduce the cost of circuit production.
  • PA power amplifier
  • a passive module when the terminal device is monitoring, for example, when monitoring a paging message, a passive module can be used to process the received wireless signal, so that the power of the terminal device is not required or very little power of the terminal device needs to be used. Therefore, the power consumption of the terminal device can be reduced, which will be described in detail below.
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application.
  • the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • the interaction between core network equipment, access network equipment and terminal equipment is used as an example for description.
  • the operations performed by the core network equipment can also be performed by chips or modules inside the core network equipment, and the operations performed by the access network equipment It can also be performed by a chip or module inside the access network device, and the operation performed by the terminal device can also be performed by a chip or module inside the terminal device.
  • FIG. 3 a schematic flowchart of a communication method provided by an embodiment of the present application is shown. Referring to Figure 3, the method includes:
  • S301 The first access network device determines to page the terminal device.
  • the paging message sent by the first access network device to the terminal device is referred to as the first paging message, and the core network device or the second access network device is sent to the first access network device.
  • the sent paging message is referred to as the second paging message.
  • the first access network device receives the second paging message, thereby determining that the terminal device needs to be paged.
  • the first access network device may receive a second paging message, where the second paging message includes the first identifier, and the second paging message is used to instruct to page a terminal device corresponding to the first identifier, or to instruct the first access
  • the network device pages the terminal device corresponding to the first identifier.
  • the second paging message comes from a core network device, or the second paging message comes from a second access network device, where the second access network device may refer to an anchor access network device of the terminal device, That is, the second access network device is the last access network device that the terminal device accesses before it is in the RRC idle state or the RRC inactive state.
  • the first identification may be the identification of the terminal device, specifically, the first identification may be the identification assigned by the core network device to the terminal device, such as serving-temporary mobile subscriber identity (serving-temporary mobile subscriber identity, s-TMSI) ); or the first identification can also be the identification allocated by the access network equipment for the terminal equipment, such as a non-activated wireless network temporary identification; or the first identification can be the globally unique identification of the terminal equipment, such as an international mobile subscriber identity (international mobile subscriber identity, IMSI).
  • the first identifier may also be the group identifier of the group in which the terminal device is located. For example, the group in which the terminal device is located may be grouped according to the service type of the terminal device, or may be grouped in other ways. This embodiment of the present application Not limited.
  • the first access network device receives data or signaling that needs to be sent to the terminal device, thereby determining that the terminal device needs to be paged. Further, the first access network device determines that the The first identifier of the terminal device.
  • the first access network device sends a first signal, where the first signal includes a first identifier.
  • the first signal is used for paging the terminal equipment, and the first identification corresponds to the terminal equipment, or the first identification is the identification of the terminal equipment.
  • the first signal may also provide the terminal device with energy to process the first signal.
  • the first signal can be divided into two parts in the time domain or power domain, one part is used to provide energy, and the terminal device can convert this part of the signal into energy; the other part of the first signal is used to carry information, such as carrying the first identifier, the terminal The device can obtain information such as the first identifier through this part.
  • the terminal device receives the first signal, and processes the first signal by using the energy provided by the first signal to obtain the first identifier.
  • the terminal device can use the energy collection module of the passive module to A part of the time domain or power domain of the first signal is converted into energy, and the obtained energy is provided to the signal processing module, so as to use the energy to drive the signal processing module for processing the first signal to work.
  • the signal processing module of the terminal device can process another part of the time domain or power domain of the first signal, such as filtering, demodulating, decoding, etc., so that information such as the first identifier can be obtained from the first signal.
  • the terminal device may also use other ways to process the first signal, which is not limited in this application.
  • S304 The terminal device determines to initiate random access to the first access network device according to the first identifier.
  • the specific content of the random access process between the terminal device and the first access network device is not limited in this embodiment of the present application, and details are not described herein again.
  • the terminal device determines that the first identifier corresponds to the terminal device, it can be considered that the first access network device has paged the terminal device through the first signal. call the terminal equipment. If the terminal device determines that the first identifier does not correspond to the terminal device, it may be considered that it has not been paged by the first access network device, and thus the first paging message may be ignored.
  • a method of paging a terminal device through a signal capable of providing energy may be referred to as passive paging.
  • the access network device When an access network device supports paging a terminal device by sending a signal capable of providing energy, the access network device has the capability of passive paging; correspondingly, when the terminal device supports paging by a signal capable of providing energy call, then the terminal device has the capability of passive paging, or the terminal device supports receiving passive paging messages.
  • the terminal device determines that the first identifier corresponds to the terminal device is not limited in this embodiment of the present application. For example, if the first identifier matches the identifier stored in the terminal device, it may be considered that the first identifier corresponds to the terminal device. Specifically, the terminal device can match the first identification obtained from the first signal with the second identification in the terminal device, and if the matching is successful, it can be determined that the first identification corresponds to the terminal device; if the matching fails, it can be determined that The first identifier does not correspond to the terminal device.
  • the successful matching between the first identifier and the second identifier may mean that the first identifier and the second identifier are the same, or may refer to other situations, which are not limited in this application.
  • the second identifier may be the identifier of the terminal device, and may also be the group identifier of the group in which the terminal device is located.
  • the first identifier and the second identifier may be the identifiers allocated to the terminal device by the core network, such as s-TMSI; when the terminal device is in the RRC inactive state, the first identifier and the second identifier
  • the second identifier may be an identifier allocated by the access network device to the terminal device, such as a temporary identifier of an inactive wireless network.
  • the second identifier of the terminal device can be stored in the storage module of the passive module, and the energy used by the terminal device to perform the identifier matching process can also be the energy obtained from the first signal, which can significantly reduce the power consumption of the terminal device. to increase the standby time of the terminal device.
  • the terminal device may store multiple second identifiers, and the terminal device may match the first identifier with multiple second identifiers. If the first identifier and one of the second identifiers are successfully matched, it may be considered that the first identifier corresponds to the terminal device.
  • the first identifier is an identifier assigned by the core network to the terminal device, and the terminal device stores an identifier assigned by the core network to the terminal device, an identifier assigned by the access network device to the terminal device, and a group identifier.
  • the terminal device may match the first identifier with the stored multiple identifiers, and finally determine that the first identifier and the stored identifier allocated by the core network for the terminal device match successfully, then determine that the first identifier corresponds to the terminal device.
  • the terminal device when the terminal device receives the first signal, it does not use its own energy to process the first signal, but uses the energy provided by the first signal to process the first signal, so that it does not need to consume the power of the terminal device itself. Reduce the energy consumption of terminal equipment monitoring paging messages.
  • the access network device can page the terminal device at any time, the terminal device does not need to monitor at a fixed PO, and the terminal device can be woken up in real time, reducing the paging delay.
  • the network side before paging the terminal device, can also perform capability alignment with the terminal device to ensure that the terminal device can obtain the energy in the first signal, thereby determining whether the first signal is a signal for paging itself.
  • the following description will be given by taking a core network (core network, CN) sending a paging message to a terminal device as an example. It can be understood that, in the following embodiments, if the same parameters as those in the process shown in FIG. 3 appear, such as the first signal, the first identification, etc., if there is no special description, the meanings of these related parameters can be referred to the corresponding parameters in FIG. 3 . The relevant description of the parameters will not be repeated below.
  • a schematic flowchart of a communication method provided by an embodiment of the present application includes:
  • S401 The core network device obtains capability information of the terminal device.
  • the capability information indicates that the terminal device supports the second characteristic parameter of the received signal or the second characteristic parameter of the signal that the terminal device can process in a passive manner, or the capability information indicates that the terminal device can adopt passive
  • the second characteristic parameter of the signal processed by the method includes one or more of the signal frequency, the signal format, the signal protocol type or the protocol version.
  • the signal here may refer to a signal capable of providing energy, such as a first signal; processing the signal in a passive manner refers to processing the received signal using the energy provided by the received signal.
  • the frequency of the signal refers to the working frequency of the signal, such as high frequency, intermediate frequency, and low frequency; another example, specific frequency bands such as 2.54GHz, 902-928MHz, 13.56MHz, and 125-134kHz.
  • the format of the signal may include a modulation method, such as active or passive, or a specific modulation technique: OOK, ASK, and PSK.
  • the power control method can include open-loop control, closed-loop control, radio frequency transmit power parameters (such as high power, medium power, low power or specific transmit power value), the minimum reception threshold required by the signal (the information in the signal needs to be obtained from the The lowest energy value obtained by passive circuits), the way of energy conversion (such as electromagnetic conversion, inductive conversion).
  • the signal protocol type and protocol version are used to determine that the terminal device and the network use the same encoding and/or frame format.
  • the relevant protocol types include International Organization for Standardization (ISO)-14443-A, ISO-14443- B, ISO-15693, ISO-18000-3, where ISO-14443-A uses Manchester encoding and ISO-14443-B uses non-return-to-zero encoding.
  • ISO International Organization for Standardization
  • the capability information when the terminal device has the capability of passive paging, may indicate that the terminal device supports passive paging, or the capability information may indicate that the terminal device has the capability of processing signals in a passive manner, or The capability information may indicate that the terminal device has passive paging capability.
  • the second characteristic parameter may be specified by a communication protocol. If the terminal device and the network device support the same communication protocol, both the terminal device and the network device support transmitting signals with the same characteristic parameter.
  • Core network equipment can obtain capability information in various ways.
  • the core network device may obtain capability information from the terminal device, which may specifically include the following steps:
  • the terminal device sends a request message to the core network device, where the request message includes capability information of the terminal device.
  • the request message may be a registration request message in a registration process, or a TAU update request message in a tracking area (TAU) update process, or a capability update request message in a capability update process.
  • TAU tracking area
  • S401-a2 The core network device sends a response message to the terminal device.
  • the message between the core network device and the terminal device may be a non-access stratum (non-access stratum, NAS) message, and the NAS message is transparently forwarded to the terminal device or the core network device through the access network device.
  • NAS non-access stratum
  • the core network device may obtain the capability information of the terminal device through the first access network device, which may specifically include the following steps:
  • the first access network device sends a capability acquisition message to the terminal device.
  • the capability acquisition message may instruct the terminal device to report the capability, such as a UE capability request (UE capability enquiry) message.
  • the capability acquisition message may indicate whether the terminal device reports whether it supports passive paging or whether it has the capability of processing signals in a passive manner. It should be noted that the terminal device is in the RRC connection state at this time.
  • S401-b2 The terminal device sends a capability response message to the terminal device.
  • the capability response message is, for example, UE capability information.
  • the capability response message includes capability information, and the capability information may indicate whether the terminal device supports passive paging or has the capability to process signals in a passive manner.
  • S401-b3 The first access network device forwards the capability information of the terminal device to the core network device.
  • S402 The first access network device sends first indication information to the terminal device.
  • the first indication information indicates a first characteristic parameter of the first signal, and the first characteristic parameter includes one or more of a signal frequency, a signal format, a signal protocol type or a protocol version. And/or, the first indication information indicates whether the first access network device supports passive paging, for example, when the first access network device has the capability of passive paging, the first indication information may indicate the first access network device The device supports paging the terminal device through the first signal, or the first indication information may indicate that the first access network device has the capability of passive paging, or the first indication information may indicate that the first access network device supports passive paging .
  • the first characteristic parameter is specified by a communication protocol. If the terminal device and the network device support the same communication protocol, both the terminal device and the network device support transmitting signals with the same characteristic parameter.
  • the network side can page the terminal device through the following procedure.
  • the core network device sends a second paging message to the first access network device.
  • the core network device when the core network device determines that there is data or signaling that needs to be sent to the terminal device, the core network device sends a message to at least one access network device (including the first access network device (including the first tracking area) in the tracking area (TA) where the terminal device is located.
  • the access network device sends a second paging message, where the second paging message may carry the first identifier.
  • the second paging message further includes capability information of the terminal device.
  • the first access network device may page the terminal device through at least one of the first signal and the first paging message.
  • the method further includes: the first access network device determines whether the terminal device has passive paging capability, or determines the first signal to be sent Whether the second characteristic parameter of the terminal matches the first characteristic parameter indicated by the capability information of the terminal device.
  • the first access network device determines that the terminal device has a passive paging capability according to the capability information of the terminal device, or determines that the second characteristic parameter of the first signal to be sent and the capability information of the terminal device indicate the same. If the first characteristic parameter matches, S404 may be executed: the first access network device sends the first signal to the terminal device.
  • the first access network device determines, according to the capability information of the terminal device, that the terminal device does not have the passive paging capability, or the second characteristic parameter of the first signal to be sent and the capability information of the terminal device When the indicated first characteristic parameter does not match, the first access network device does not send the first signal.
  • the first access network device does not send the first signal, in order to page the terminal device, the first access network device needs to send the first paging message.
  • S405 The first access network device sends a first paging message to the terminal device.
  • the first paging message includes a first identifier, and the first paging message is used to page a terminal device corresponding to the first identifier.
  • the first access network device may not send the first paging message, or may send the first paging message, which is specifically determined according to the actual situation. For example, if the first access network device fails to page the terminal device successfully through the first signal, the first paging message is sent.
  • the terminal device receives the first signal and/or the first paging message from the first access network device.
  • the terminal device determines that it corresponds to the first identifier included in the first signal or the first paging message, it can initiate random access to the first access network device, and the specific flow of the random access process will not be repeated.
  • the terminal device may determine whether to be paged by the network side in a passive paging manner according to the first indication information. If the terminal device determines that the first access network device is paged in a passive paging manner, it may preferentially receive a paging from the network side in a passive paging manner. For example, the terminal device may determine whether to be paged by the network side in the passive paging manner through the following two implementation manners.
  • the first indication information indicates the first characteristic parameter of the first signal
  • the terminal device may determine that the signal with the first characteristic parameter can be processed passively. , that is, it is determined that it can be paged by the network side in a passive paging manner, and it can be determined that it has the ability to receive or process the first signal. If the first characteristic parameter does not match the second characteristic parameter, the terminal device may determine that the signal with the first characteristic parameter cannot be processed in a passive manner, that is, determine that it cannot be paged by the network side in a passive paging manner, and It is determined that it does not have the capability to receive or process the first signal.
  • the matching of the first characteristic parameter and the second characteristic parameter may refer to at least one of the signal frequency, signal format, signal protocol type and protocol version included in the first characteristic parameter, which matches the signal frequency, signal format, signal protocol type and protocol version included in the second characteristic parameter.
  • the corresponding parameters in the signal format, signal protocol type and protocol version are the same.
  • the signal frequency included in the first characteristic parameter is the same as the signal frequency included in the second characteristic parameter, then it can be considered that the first characteristic parameter matches the second characteristic parameter.
  • the first indication information indicates that the first access network device supports paging the terminal device through the first signal, or the first indication information indicates that the first access network device has the capability of passive paging, or the first
  • the terminal device determines that it can be paged by the network side through passive paging, and can determine that it has the ability to receive or process the first signal.
  • the terminal device specifically processes the first signal, reference may be made to the flow shown in FIG. 3 above, and details are not repeated here.
  • the core network device when the core network device pages the terminal device through the access network device, it indicates the capability information related to passive paging of the terminal device to the access network device, so that the access network device can determine whether the terminal device can receive The first signal, so that when the terminal device can receive the first signal, the terminal device can be paged through the first signal.
  • This method can ensure that the capabilities of the access network device and the terminal device are aligned and that the first signal can be effectively received.
  • the access network side before paging the terminal device, can also perform capability alignment with the terminal device to ensure that the terminal device can process the first signal in a passive manner, so that the terminal device can be paged through the first signal.
  • the following description will be given by taking the access network side initiating paging to the terminal device as an example.
  • a schematic flowchart of a communication method provided by an embodiment of the present application includes:
  • S501 The first access network device sends first indication information to the terminal device.
  • the first indication information indicates the first characteristic parameter of the first signal, and/or the first indication information indicates whether the first access network device supports passive paging.
  • the first indication information please refer to FIG. 4 The description in the process is not repeated here.
  • the access network side can page the terminal device through the following procedure.
  • S502 the second access network device sends a second paging message to the first access network device.
  • the second access network device may be an anchor (anchor) access network device, that is, the second access network device is the last access network device that the terminal device accesses before being in the RRC idle state or the RRC inactive state.
  • the second access network device may notify at least one access network in the RAN-based notification area (RNA) where the terminal device is located.
  • the device (including the first access network device) sends the second paging message.
  • the second paging message carries the first identifier.
  • the second paging message further includes capability information of the terminal device.
  • the capability information of the terminal device may indicate that the terminal device supports the second characteristic parameter of the received signal; in another implementation manner, the capability information may indicate that the terminal device supports the received signal. Passive paging is supported, or the capability information may indicate that the terminal device has the capability to process signals in a passive manner.
  • the capability information may indicate that the terminal device has the capability to process signals in a passive manner.
  • the capability information of the terminal device may be reported to the first access network device when the terminal device accesses the first access network device.
  • S502 may not be performed.
  • the first access network device sends a first signal to the terminal device.
  • the first access network device determines that the terminal device has passive paging capability according to the capability information of the terminal device, or determines the second characteristic parameter of the first signal to be sent and the capability of the terminal device If the first characteristic parameter indicated by the information matches, the first signal may be sent to the terminal device.
  • the first access network device determines, according to the capability information of the terminal device, that the terminal device does not have the passive paging capability, or the second characteristic parameter of the first signal to be sent and the capability information of the terminal device If the indicated first characteristic parameter does not match, the first access network device does not send the first signal, but pages the terminal device by sending the first paging message, and the specific process will not be repeated.
  • S504 The terminal device receives the first signal from the first access network device.
  • the terminal device determines that it corresponds to the first identifier included in the first signal, it can initiate random access to the first access network device, and the specific flow of the random access process will not be repeated.
  • the terminal device specifically receives and processes the first signal, reference may be made to the flow shown in FIG. 3 above, and details are not repeated here.
  • the terminal device may also receive the paging message, and the specific process will not be repeated.
  • the access network device when the access network device pages the terminal device, it determines whether the terminal device can receive the first signal according to the capability information of the terminal device, so that when the terminal device can receive the first signal, the first signal can be used for paging. For the terminal device, this method can ensure that the capabilities of the access network device and the terminal device are aligned, and that the first signal can be effectively received.
  • the first signal is different from the cellular network signal, and may not be sent in the manner of the cellular network signal.
  • the transmit power of the first signal may be lower than the transmit power of the cellular network signal.
  • the modulation and coding of the first signal The method is also different from the modulation and coding method of the cellular network signal, so the coverage of the first signal may be smaller than the coverage of the cell.
  • the coverage of the first signal is only a part of the coverage of the cell, so Terminal devices outside the coverage of the first signal may not be able to receive the first signal, and thus cannot be paged through the first signal.
  • the terminal equipment in different areas of the cell may be paging in different ways, so as to prevent the terminal equipment from being paged.
  • a schematic flowchart of a communication method provided by an embodiment of the present application includes:
  • S701 The first access network device sends configuration information to the terminal device.
  • the configuration information indicates a specified threshold value.
  • the specified threshold value may represent a threshold value of signal strength, the specified threshold value corresponds to a coverage area, and the coverage area corresponding to the specified threshold value may be less than or equal to the coverage area of the first signal.
  • the specified threshold value may be used to determine whether the terminal device is within the coverage of the first signal, and/or may be used to determine whether to process the first signal in a passive manner. If the signal strength of the downlink reference signal received by the terminal device is greater than or equal to the specified threshold value, the terminal device is within the coverage of the first signal, and/or can process the first signal in a passive manner; if the terminal device receives If the signal strength of the received downlink reference signal is less than the specified threshold value, the terminal device is not within the coverage of the first signal, and/or cannot process the first signal in a passive manner.
  • the signal strength may refer to a reference signal received power (reference signal received power, RSRP), or may refer to a received signal strength indicator (received signal srengthen indicator, RSSI), which is not limited in this application.
  • RSRP reference signal received power
  • RSSI received signal strength indicator
  • the configuration information may also indicate that passive paging is used when the downlink reference signal whose signal strength is greater than or equal to the specified threshold is received; in the third implementation, the configuration information indicates that the first signal is used for paging Terminal Equipment.
  • the configuration information may also include other contents, which are not limited in this application.
  • the downlink reference signal can be any downlink signal, such as a synchronization signal, a physical broadcast channel (PBCH) block signal (synchronization signal and PBCH block, SSB), a channel state information reference signal (channel state information reference) signal, CSI-RS), positioning reference signal (positioning reference signal), cell-specific reference signal (cell-specific reference signal), this application does not limit the type of downlink reference signal.
  • PBCH physical broadcast channel
  • SSB synchronization signal and PBCH block
  • CSI-RS channel state information reference signal
  • positioning reference signal positioning reference signal
  • cell-specific reference signal cell-specific reference signal
  • the first access network device sends a downlink reference signal, and the terminal device receives the downlink reference signal, and measures the downlink reference signal.
  • S703 The terminal device sends the second indication information to the first access network device.
  • the second indication information indicates whether the terminal device is located within the signal coverage of the first signal, and/or may indicate whether to process the first signal in a passive manner.
  • the terminal device may enter the RRC connection state and send the second indication information in a unicast manner; or the terminal device may also send the second indication information by methods such as data early transmission, which is not limited in this embodiment of the present application.
  • S704 The first access network device forwards the second indication information to the core network device.
  • the first access network device may also forward the second indication information to the second access network device (anchor access network device).
  • S705 the first access network device receives a second paging message, where the second paging message includes the first identifier.
  • the second paging message may come from the core network device or the second access network device.
  • the first access network device sends a first signal to the terminal device, where the first signal includes a first identifier.
  • the first access network device sends the first signal when it determines to page the terminal device, for example, sends the first signal when it receives the second paging message.
  • the first access network device sends the first signal when it determines to page the terminal device, for example, sends the first signal when it receives the second paging message.
  • the first access network device may not send the first signal if the first access network device receives the second indication information, and determines according to the second indication information that the terminal device is not within the signal coverage of the first signal, or determines that the terminal device cannot process the first signal in a passive manner. a signal. a signal, the first access network device may not send the first signal.
  • S707 The first access network device sends a first paging message to the terminal device.
  • the first paging message includes a first identifier, and the first paging message is used to page a terminal device corresponding to the first identifier.
  • the first paging message is sent.
  • the first access network device determines that the terminal device needs to be paged, it can preferentially send the first signal.
  • the first paging message is sent.
  • the first access network device determines that the terminal device cannot be paged through the first signal. For example, the first access network device determines according to the second indication information that the terminal device is not within the signal coverage of the first signal. , or it is determined that the terminal device cannot process the first signal in a passive manner, then the first access network device may determine that the terminal device cannot be paged through the first signal.
  • the first access network device may also obtain capability information of the terminal device, so as to determine whether the terminal device has the passive paging capability according to the capability information, so as to determine whether the first signal can be used to search for the terminal device.
  • capability information for calling the terminal device, reference may be made to the description in the flow of FIG. 4 for details, which will not be repeated here.
  • the terminal device receives the first signal and/or the first paging message from the first access network device.
  • the terminal device When the terminal device determines to be paged by the network side according to the first signal or the first paging message, it can initiate random access to the first access network device, and the specific flow of the random access process will not be repeated.
  • the terminal device determines that the first signal can be received, so that it can be configured to passively process the signal and receive the first signal.
  • the terminal device determines that it cannot receive the first signal, so it may not be configured to passively process the signal, and monitor the paging message. How the terminal device specifically monitors the paging message is not limited in this embodiment of the present application.
  • the terminal device determines that the first access network device is paging itself according to the first signal, if the first access network device also sends the first paging message, it can also receive the first paging message and determine the first paging message. When the message pages itself, initiate random access.
  • the terminal device can determine whether it can receive the first signal by specifying the threshold value, so as to avoid the problem that the terminal device cannot be paged by the first signal when it cannot receive the first signal.
  • the network device obtains the signal strength of the terminal device, if it is determined that the terminal device can receive the first signal, it may not send a paging message, but only paging the terminal device through the first signal, thereby reducing resource overhead. Reduce paging delay.
  • the first signal when the first signal used for passive paging cannot cover the entire cell, the first signal can be sent through the auxiliary device, so that the first signal can cover the entire cell or expand the coverage of the first signal.
  • the coverage of the first signal is only a part of the coverage of the cell, and multiple auxiliary devices are configured in the cell, and each auxiliary device can transmit the first signal, so the terminal device has more locations in the cell The first signal can be received.
  • the auxiliary device may be an auxiliary device of layer 1 (layer 1, L1) type, or a reader that can send passive signals, or a transmission point (transmission point) capable of sending passive signals,
  • the transmission reception point, or the remote radio unit with the ability to transmit wireless signals can also be other types of auxiliary equipment.
  • a schematic flowchart of a communication method provided by an embodiment of the present application includes:
  • S901 The first access network device sends configuration information to the terminal device, where the configuration information indicates a specified threshold value.
  • the specified threshold value may be used to determine whether the terminal device is within the coverage of the first signal, and/or may be used to determine whether to process the first signal in a passive manner.
  • the specified threshold value and how to judge according to the specified threshold value reference may be made to the description of the flow shown in FIG. 8 , which will not be repeated here.
  • the configuration information may also instruct the terminal device to be paged by the network side through passive paging when receiving a downlink reference signal with a signal strength greater than or equal to a specified threshold, and/or instruct the terminal device to In the case of receiving a downlink reference signal whose signal strength is less than the specified threshold value, it is paged by the network side through a traditional paging method (ie, a paging message).
  • a traditional paging method ie, a paging message
  • the first access network device may also send a downlink reference signal, and the first access network device may also instruct the auxiliary device to send a downlink reference signal, and the specific process will not be repeated.
  • the terminal device receives the downlink reference signal, and measures the downlink reference signal.
  • the downlink reference signal may be sent by the first access network device, or may be sent by an auxiliary device, and the auxiliary device may communicate with the first access network device, for example, located in a cell established by the first access network device.
  • the terminal device may determine that it is within the coverage of the first signal, and at this time the terminal device may determine that it has the ability to receive the first signal , or it is determined that the first signal can be processed in a passive manner, or it is determined to be paged by the network side in a passive paging manner; if the signal strength of the downlink reference signal received by the terminal device is less than the specified threshold, the terminal device can It is determined that it is not within the coverage of the first signal, and at this time, the terminal device may determine that it does not have the ability to receive the first signal, or determine that the first signal cannot be processed in a passive manner, or determine that it is blocked by the network in a traditional paging manner. side paging.
  • S903 The terminal device sends the second indication information to the first access network device.
  • the second indication information may indicate at least one of the following:
  • the signal strength of is greater than or equal to the specified threshold; the signal strength of the downlink reference signal.
  • the second indication information may indicate at least one of the following:
  • the signal strength of the downlink reference signal is less than the specified threshold; the signal strength of the downlink reference signal.
  • the first access network device may also forward the second indication information to the core network device.
  • the first access network device may also forward the second indication information to the second access network device (anchor access network device).
  • S904 the first access network device receives a second paging message, where the second paging message includes the first identifier.
  • the second paging message may come from the core network device or the second access network device.
  • the first access network device sends a first paging message, where the first paging message includes a first identifier, and the first paging message is used to page a terminal device corresponding to the first identifier.
  • the first access network device determines to page the terminal device, it determines that the first paging message needs to be sent.
  • the first access network device determines to page the terminal device, it determines that the first paging message needs to be sent.
  • the first access network device may send the first paging message, or may not Send a first paging message. If the second indication information corresponds to the second scenario in S903, the first access network device needs to send the first paging message. In addition, if the first access network device fails to page the terminal device successfully through the first signal, the first paging message may also be sent.
  • the first access network device sends the first identifier to the auxiliary device.
  • the first access network device may further instruct the auxiliary device to send the first signal.
  • the first access network device may also obtain capability information of the terminal device, so as to determine whether the terminal device has the passive paging capability according to the capability information. Passive paging capability, and then instruct the auxiliary device to send the first signal.
  • capability information of the terminal device, so as to determine whether the terminal device has the passive paging capability according to the capability information. Passive paging capability, and then instruct the auxiliary device to send the first signal.
  • the first access network device may send the first identifier and instruct the auxiliary device to send first signal. If the second indication information corresponds to the second scenario in S903, the first access network device may not send the first identifier, nor instruct the auxiliary device to send the first signal.
  • the auxiliary device sends a first signal to the terminal device, where the first signal includes a first identifier.
  • the terminal device receives the first signal from the auxiliary device and/or the first paging message from the first access network device.
  • the terminal device When the terminal device determines to be paged by the network side according to the first signal or the first paging message, it can initiate random access to the first access network device, and the specific flow of the random access process will not be repeated.
  • the terminal device may receive the first signal. At this time, if the first access network device also sends the first paging message, the terminal device may or may not receive the first paging message.
  • the terminal device If the signal strength of the downlink reference signal received by the terminal device is less than the specified threshold value, the terminal device cannot receive the first signal and needs to receive the first paging message.
  • the coverage of the first signal can be improved, thereby avoiding the problem that the terminal device cannot receive the first signal.
  • WUS wake up signal
  • WUS may be a special signal sequence, or may be downlink control information carried in the physical downlink control channel.
  • the WUS mechanism if the network side needs to page the terminal equipment, the WUS is sent at a specific position before the PO, so as to identify the paging message that the PO has the downlink service arrival through the WUS; if the network side does not need to page the terminal equipment, it can be Do not send WUS before PO.
  • the terminal device may not monitor the PO corresponding to the WUS; otherwise, the terminal device needs to monitor the PO.
  • the number of times the terminal device monitors paging can be reduced, thereby reducing energy consumption.
  • the terminal device since the location of the WUS is at a specific location before the PO, the terminal device must perform downlink synchronization before detecting the WUS. When the signal quality of the location where the terminal device is located is not good, multiple synchronizations may be required to successfully detect the WUS. However, , the downlink synchronization needs to consume resources, and the terminal device cannot perform deep sleep during the downlink synchronization process, and also needs to consume extra power. Therefore, in the embodiment of the present application, a method can be provided to solve the above problem, which will be described in detail below.
  • a schematic flowchart of a communication method provided by an embodiment of the present application includes:
  • S1001 The access network device determines to page the terminal device.
  • the first identifier may be the identifier of the terminal device, and in this case the first identifier may be the identifier allocated by the core network device to the terminal device, or the first identifier may be the identifier allocated by the access network device to the terminal device, or The first identifier may also be a globally unique identifier of the terminal device.
  • the first identifier may also be the group identifier of the group in which the terminal device is located. For example, the group in which the terminal device is located may be grouped according to the service type of the terminal device, or may be grouped in other ways. This embodiment of the present application Not limited.
  • the access network device receives data or signaling that needs to be sent to the terminal device, thereby determining that the terminal device needs to be paged.
  • the access network device sends a second signal to the terminal device.
  • the second signal includes the first identifier; the second signal is used to instruct to monitor the first paging message and provide the terminal device with energy to process the second signal.
  • the second signal may be used to instruct the terminal device corresponding to the first identifier to monitor the first paging message.
  • the second signal can be divided into two parts in the time domain or power domain, one part is used to provide energy, and the terminal device can convert this part of the signal into energy; the other part of the second signal is used to carry information, such as carrying the first identifier, the terminal device can convert the part of the signal into energy; The device can obtain information such as the first identifier through this part.
  • the signal modulation technology, power control method, signal frequency, signal format, signal protocol type or protocol version of the second signal are the same as those of the first signal. For details, please refer to the description of the first signal, which will not be repeated here.
  • the access network device may also instruct the auxiliary device to send the second signal.
  • the access network device may also instruct the auxiliary device to send the second signal.
  • the access network device sends a first paging message to the terminal device, where the first paging message is used to page the terminal device.
  • the first paging message may include a first identifier, and the first paging message is used to page a terminal device corresponding to the first identifier.
  • the terminal device receives the second signal from the access network device, and processes the second signal by using the energy provided by the second signal to obtain the first identifier.
  • the terminal device specifically processes the second signal, reference may be made to the process of processing the first signal, which will not be repeated here.
  • the terminal device may determine to monitor the first paging message according to the first identifier. Specifically, if the terminal device determines that the first identifier corresponds to the terminal device, it can be considered that the access network device needs to page the terminal device. At this time, the function of the second signal can be similar to that of the WUS, and is used to indicate the access network device. Whether the terminal device will be paged can also be understood as the access network device sending the WUS to the terminal device in a passive transmission manner.
  • the terminal device determines that the first identifier corresponds to the terminal device. For example, the terminal device can match the first identifier with the second identifier in the terminal device, and if the matching is successful, it can be determined that the first identifier corresponds to the terminal device; if the matching fails, it can be determined that the first identifier corresponds to the terminal device Does not correspond.
  • the terminal device corresponds to the first identifier, and monitors the first paging message.
  • the terminal device may also perform operations such as downlink synchronization, which will not be repeated here.
  • the terminal device When the terminal device receives the first paging message, if it is determined to be paged by the network side according to the first paging message, it can initiate random access to the access network device, and the specific flow of the random access process will not be repeated.
  • the terminal device when the terminal device receives the second signal, it does not use its own energy to process the second signal, but uses the energy provided by the second signal to process the second signal, so that it does not need to consume the power of the terminal device itself. Reduce the energy consumption of terminal equipment monitoring paging messages. At the same time, the terminal device monitors the paging message only when the first identifier is obtained, which can reduce the number of times of monitoring the paging message and reduce energy consumption. In addition, the terminal device only enters the RRC connection state when it monitors the paging message paging itself, so as to avoid being woken up by mistake and improve reliability.
  • FIG. 11 a schematic flowchart of a communication method provided by an embodiment of the present application, the method includes:
  • the access network device sends a third signal to the terminal device.
  • the third signal includes third indication information.
  • the third indication information is used to indicate detection message indication information, and the message indication information may instruct the terminal device to receive a system message.
  • the system message may be an SI or a PWS notification message or the like.
  • the message indication information may refer to SI change indicator information; when the system message is a PWS message, the message indication information may refer to PWS notification indicator (PWS notification indicator) information, and not otherwise. Repeat.
  • the third indication information is message indication information, or the third indication information is used to instruct the terminal device to change the system information, or to instruct the terminal device to receive an updated system message, or to instruct the terminal device to receive the PWS.
  • a message or other message is not limited in this embodiment of the present application.
  • the third signal can also provide the terminal device with energy to process the third signal.
  • the third signal can be divided into two parts in the time domain or power domain, one part is used to provide energy, and the terminal device can convert this part of the signal into energy; Another part of the three signals is used to carry information, for example, to carry the third indication information.
  • the third signal further includes time information, where the time information indicates the time at which the system message is received or sent, and the terminal device can determine the position of the system message in the time domain according to the time information, thereby being able to receive the system message accurately.
  • the third signal may also include other information, such as including the first identifier, which will not be exemplified one by one here.
  • this application does not limit the situation in which the access network device sends the third signal, for example, when the SI changes or the PWS message arrives, the third signal is sent.
  • the terminal device receives the third signal from the access network device, and processes the third signal by using the energy provided by the third signal to obtain third indication information.
  • the terminal device specifically processes the third signal, reference may be made to the process of processing the first signal, which will not be repeated here.
  • S1103 The access network device sends message indication information to the terminal device, where the message indication information may instruct the terminal device to receive a system message.
  • S1104 The access network device sends a system message to the terminal device.
  • S1105 The terminal device detects the message indication information.
  • the terminal device If the terminal device detects the message indication information, it can receive the system message; if the terminal device does not detect the message indication information, it can no longer receive the system message.
  • S1106 The terminal device receives the system message from the access network device.
  • the terminal device can perform downlink synchronization, and detect message indication information in at least one PO after downlink synchronization. If the terminal device detects the message indication information, it can determine that it needs to receive the system message, and receive the system message on the corresponding time-frequency resource.
  • the terminal device obtains the third indication information, can determine that it needs to receive the system message, and receives the system message on the corresponding time-frequency resource.
  • the terminal device when receiving the third indication information, may also continue to detect the message indication information. If the terminal device detects the message indication information, it can determine that it needs to receive a system message. In this way, false detection can be avoided and reliability can be improved.
  • the energy consumption of the terminal device can be significantly reduced, and it can be ensured that the terminal device can receive the system message accurately.
  • the terminal device acquires the third signal and detects the message indication information, it receives the system message, which can avoid being woken up by mistake and improve reliability.
  • both the second signal in FIG. 10 and the third signal in FIG. 11 may be sent in a passive manner. Therefore, regarding the sending, receiving and processing procedures of the second signal and/or the third signal, reference may be made to the above For the relevant description of the first signal, and the second signal and/or the third signal can also be combined with the methods in FIG. 3 to FIG. 9 to report capability information, report whether passive transmission is indicated through indication information, configure thresholds, etc. process.
  • step numbers of the flowcharts described in the embodiments are only an example of the execution flow, and do not constitute a restriction on the sequence of execution of the steps.
  • steps that do not have time-series dependencies are not strictly related to each other. execution order.
  • steps that must be executed are steps that must be executed, and some steps may be added or deleted on the basis of each flowchart according to actual needs.
  • the methods provided by the embodiments of the present application are respectively introduced from the perspective of interaction between various devices.
  • the steps performed by the above-mentioned access network equipment may also be implemented by different communication apparatuses respectively.
  • the first device is used to receive the first signal and initiate random access
  • the second device is used to process the first signal using the energy provided by the first signal, that is to say, the first device and the second device jointly complete the process.
  • the steps performed by the access network device in this embodiment of the present application do not limit a specific division manner.
  • the energy extraction from the first signal may also be performed by a third apparatus.
  • the network architecture includes one or more distributed units (DUs), one or more centralized units (CUs) and one or more radio frequency units (RUs), the above steps performed by the access network equipment It can be implemented by DU, CU and RU, respectively.
  • DUs distributed units
  • CUs centralized units
  • RUs radio frequency units
  • the access network device, the terminal device, or the above communication device may include a hardware structure and/or a software module, and a hardware structure, a software module, or a hardware structure plus a software module form to achieve the above functions. Whether one of the above functions is performed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.
  • each functional module in each embodiment of the present application may be integrated into one processor, or may exist physically alone, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.
  • an embodiment of the present application further provides a communication apparatus 1200 .
  • the communication apparatus 1200 may be the terminal devices 1-5 in FIG. 1, and is used to implement the method for the terminal device in the above method embodiments.
  • the communication apparatus may also be the access network device 1 or the access network device 2 in FIG. 1 , for implementing the method corresponding to the first access network device or the second access network device in the above method embodiments.
  • the communication apparatus 1200 may include: a processing unit 1201 and a communication unit 1202 .
  • the communication unit may also be referred to as a transceiver unit, and may include a sending unit and/or a receiving unit, which are respectively configured to perform the sending and receiving steps of the network device or the terminal device in the above method embodiments.
  • the communication apparatus provided by the embodiments of the present application will be described in detail with reference to FIG. 12 to FIG. 13 .
  • the behaviors and functions of the terminal device in the foregoing method embodiments may be implemented by the communication apparatus 1200, for example, the implementation of FIG. 3 or FIG. 4 or FIG. 5 or FIG. 7 or FIG. 9 or FIG. 10 or FIG.
  • the method executed by the terminal device in the example may be a terminal device, or a component (such as a chip or circuit) applied in the terminal device, or a chip or a chipset in the terminal device or a part of the chip for performing related method functions.
  • the communication unit 1202 may be used to perform the receiving or sending operation performed by the terminal device in the embodiment shown in FIG. 3 or FIG. 4 or FIG. 5 or FIG. 7 or FIG. 9 or FIG. 10 or FIG. 11
  • the processing unit 1201 may be used for Perform operations other than the transceiving operation performed by the terminal device in the embodiment shown in FIG. 3 or FIG. 4 or FIG. 5 or FIG. 7 or FIG. 9 or FIG. 10 or FIG. 11 .
  • the communication unit 1202 is specifically configured to receive a first signal, where the first signal includes a first identifier, the first signal is used to page the terminal device, and the first identifier is associated with the first identifier.
  • the terminal equipment corresponds.
  • the processing unit 1201 is configured to process the first signal by using the energy provided by the first signal to obtain the first identifier, and the processing unit 1201 is further configured to determine the first access network device according to the first identifier. Initiate random access.
  • the communication unit 1202 is specifically configured to receive a second signal from the access network device, where the second signal includes a first identifier, the second signal is used to instruct to monitor the first paging message, the first A paging message is used to page the terminal device; the processing unit 1201 is used to process the second signal with the energy provided by the second signal to obtain the first identifier; if it corresponds to the first identifier, the communication unit 1202 monitors the first paging message.
  • the communication unit 1202 is specifically configured to receive a third signal from an access network device, where the third signal includes third indication information, and the third indication information indicates that the terminal device receives a system message, and provide the terminal device with energy to process the third signal; the processing unit 1201 is configured to use the energy provided by the third signal to process the third signal to obtain the third indication information; the communication unit 1202 and is further configured to receive the system message from the access network device according to the third indication information.
  • the system message is system information SI or a public early warning system PWS message.
  • the third signal further includes time information, where the time information indicates the time at which the system message is received.
  • the behaviors and functions of the access network equipment in the foregoing method embodiments may be implemented by the communication apparatus 1200, for example, implementing FIG. 3 or FIG. 4 or FIG. 5 or FIG. 7 or FIG. 9 or FIG. 10 or FIG. 11 .
  • the communication apparatus 1200 may be an access network device, or a component (such as a chip or circuit) applied to the access network device, or a chip or a chip set in a terminal device or a chip used to execute related method functions a part of.
  • the communication unit 1202 may be configured to execute the first access network device or the second access network device in the embodiment shown in FIG. 3 or FIG. 4 or FIG.
  • the processing unit 1201 may be configured to perform the operation performed by the first access network device or the second access network device in the embodiment shown in FIG. 3 or FIG. 4 or FIG. 5 or FIG. 7 or FIG. 9 or FIG. 10 or FIG. Operations other than sending and receiving operations performed by the network access device.
  • the communication unit 1202 is specifically configured to receive a second paging message from a core network device or a second access network device, where the second paging message includes a first identifier, the second paging message The paging message is used to instruct a terminal device corresponding to the first identifier to be paged; the communication unit is further configured to send a first signal to the terminal device, where the first signal includes the first identifier; the The first signal is used to page the terminal device and provide the terminal device with energy to process the first signal.
  • the processing unit is configured to determine that a first characteristic parameter of the first signal matches the second characteristic parameter, where the first characteristic parameter includes one or more of a signal frequency, a signal format, or a signal protocol type.
  • the communication unit 1202 is specifically configured to send a second signal to the terminal device, where the second signal includes a first identifier, the second signal is used to instruct to monitor the first paging message, and is used for The terminal device provides energy for processing the second signal, and the first paging message is used for paging the terminal device; the communication unit 1202 is further configured to send the first paging message to the terminal device.
  • the communication unit 1202 is specifically configured to send a third signal to the terminal device, where the third signal includes third indication information, and provides the terminal device with energy to process the third signal,
  • the third indication information is used to instruct the terminal device to receive the system message; the communication unit 1202 is further configured to send the system message to the terminal device.
  • the system message is system information SI or a public early warning system PWS message.
  • the third signal further includes time information, where the time information indicates the time at which the system message is received.
  • a communication unit may also be referred to as a transceiver, transceiver, transceiver, or the like.
  • the processing unit may also be referred to as a processor, a processing single board, a processing module, a processing device, and the like.
  • the device for implementing the receiving function in the communication unit 1202 may be regarded as a receiving unit, and the device for implementing the transmitting function in the communication unit 1202 may be regarded as a transmitting unit, that is, the communication unit 1202 includes a receiving unit and a transmitting unit.
  • a communication unit may also sometimes be referred to as a transceiver, transceiver, or transceiver circuit, or the like.
  • the receiving unit may also sometimes be referred to as a receiver, receiver, or receiving circuit, or the like.
  • the transmitting unit may also sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.
  • processing unit 1201 and the communication unit 1202 may also perform other functions.
  • the processing unit 1201 and the communication unit 1202 may also perform other functions.
  • FIG. 13 shows a communication apparatus 1300 provided in an embodiment of the present application.
  • the apparatus shown in FIG. 13 may be an implementation of a hardware circuit of the apparatus shown in FIG. 12 .
  • the communication apparatus can be applied to the flow chart shown above to perform the functions of the terminal device or the network device in the above method embodiments. For convenience of explanation, FIG. 13 only shows the main components of the communication device.
  • the communication device 1300 includes a processor 1310 and an interface circuit 1320 .
  • the processor 1310 and the interface circuit 1320 are coupled to each other.
  • the interface circuit 1320 can be a transceiver or an input-output interface.
  • the communication apparatus 1300 may further include a memory 1330 for storing instructions executed by the processor 1310 or input data required by the processor 1310 to execute the instructions or data generated after the processor 1310 executes the instructions.
  • the processor 1310 is used to implement the functions of the above-mentioned processing unit 1201
  • the interface circuit 1320 is used to implement the functions of the above-mentioned communication unit 1202 .
  • the terminal device chip When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments.
  • the terminal device chip receives information from other modules (such as radio frequency modules or antennas) in the terminal device, and the information is sent by the access network device to the terminal device; or, the terminal device chip sends information to other modules (such as radio frequency) in the terminal device. module or antenna) to send information, the information is sent by the terminal equipment to the access network equipment.
  • modules such as radio frequency modules or antennas
  • the access network device chip When the above communication device is a chip applied to an access network device, the access network device chip implements the functions of the network device in the above method embodiments.
  • the access network device chip receives information from other modules (such as radio frequency modules or antennas) in the access network device, and the information is sent by the terminal device to the network device; or, the access network device chip sends information to the access network device.
  • the other modules (such as radio frequency modules or antennas) of the device send information, and the information is sent by the access network equipment to the terminal equipment.
  • the processor in the embodiments of the present application may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices.
  • a general-purpose processor may be a microprocessor or any conventional processor.
  • the memory may be a random access memory (Random Access Memory, RAM), a flash memory, a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable memory A programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), a register, a hard disk, a removable hard disk, or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and storage medium may reside in an ASIC.
  • the ASIC may be located in a network device or in an end device.
  • the processor and storage medium may also exist as discrete components in a network device or terminal device.
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, etc.) having computer-usable program code embodied therein.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande fournit un procédé et un appareil de communication. Le procédé consiste à : recevoir un premier signal, le premier signal comprenant un premier identifiant, et le premier signal étant utilisé pour appeler un dispositif terminal correspondant au premier identifiant ; traiter le premier signal en utilisant de l'énergie fournie par le premier signal de façon à obtenir le premier identifiant ; et déterminer de déclencher un accès aléatoire à un premier dispositif de réseau d'accès selon le premier identifiant. Au moyen du procédé, lors de la réception du premier signal, le dispositif terminal n'utilise pas sa propre énergie pour traiter le premier signal, mais utilise l'énergie fournie par le premier signal pour traiter le premier signal, de sorte que l'énergie électrique du dispositif terminal elle-même n'a pas besoin d'être consommée, et la consommation d'énergie du dispositif terminal pour surveiller un message d'appel est significativement réduite. De plus, lorsqu'il y a une demande d'appel, le dispositif de réseau d'accès peut appeler le dispositif terminal à tout moment, le dispositif terminal n'a pas besoin de surveiller le message d'appel à une PO fixe, le dispositif terminal peut être réveillé en temps réel, et le retard d'appel est raccourci.
PCT/CN2022/084547 2021-04-07 2022-03-31 Procédé et appareil de communication WO2022213885A1 (fr)

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WO2024087186A1 (fr) * 2022-10-28 2024-05-02 北京小米移动软件有限公司 Procédé et appareil de communication, dispositif et support de stockage lisible

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