WO2022257796A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2022257796A1
WO2022257796A1 PCT/CN2022/095855 CN2022095855W WO2022257796A1 WO 2022257796 A1 WO2022257796 A1 WO 2022257796A1 CN 2022095855 W CN2022095855 W CN 2022095855W WO 2022257796 A1 WO2022257796 A1 WO 2022257796A1
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WIPO (PCT)
Prior art keywords
indication information
terminal device
system message
changed
paging
Prior art date
Application number
PCT/CN2022/095855
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English (en)
French (fr)
Inventor
李晨琬
陈磊
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华为技术有限公司
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Publication date
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Publication of WO2022257796A1 publication Critical patent/WO2022257796A1/zh

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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
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • 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, and, more particularly, to a communication method and a communication device.
  • the basic mechanism of discontinuous reception (DRX) is to configure the DRX cycle (DRX cycle) for the terminal device.
  • the terminal device normally monitors the physical downlink control channel (PDCCH).
  • the terminal device may enter a dormant state and not receive the PDCCH to reduce power consumption, thereby achieving the purpose of power saving.
  • PDCCH physical downlink control channel
  • System messages carried in a broadcast control channel may change with a broadcast control channel modification period (modification period, MP).
  • BCCH broadcast control channel
  • modification period MP
  • the base station sends a paging message to the terminal equipment, and the paging message includes indication information that the system information changes.
  • the DRX cycle is less than or equal to the BCCH MP, the position in the time domain for the terminal device to receive the changed system message is different from that when the DRX cycle is greater than the BCCH MP.
  • the 5G standard introduces low-complexity or low-capability (reduced capability, REDCAP) terminal equipment.
  • REDCAP terminal equipment has narrower bandwidth, lower power consumption, and fewer antennas, etc., and does not support superframes. Therefore, how the REDCAP terminal equipment receives the changed system message is a problem that needs to be solved at present.
  • the present application provides a communication method and a communication device, which can prevent terminal devices that do not support superframes from frequently receiving system messages, thereby saving power consumption.
  • a communication method is provided.
  • the method may be executed by a terminal device, or may also be executed by a chip or a circuit configured in the terminal device, which is not limited in this application.
  • the method includes: when the discontinuous reception period is greater than the change period of the broadcast control channel, the terminal device receives first indication information, the first indication information indicates that the paging system message is changed, and the first indication information includes the changed paging information Information about the time domain location where the call system message is located. Or, when the discontinuous reception period is greater than the broadcast control channel change period, the terminal device receives first indication information, the first indication information indicates that the paging system message is changed, and the first indication information also indicates the changed paging system information.
  • the time domain position where the system message is located is the start boundary of the next superframe of the time domain position where the first indication information is located or the next system frame whose frame number is 0.
  • the terminal device receives the changed paging system message according to the first indication information.
  • the terminal device can receive the changed paging system message according to the first indication information from the network device (the paging system message is paging-related system messages), which can prevent terminal devices that do not support superframes, such as low-capability terminal devices, from frequently receiving system messages (the system messages include changed paging system messages), thereby saving power consumption of low-capability terminal devices.
  • the paging system message is paging-related system messages
  • the system messages include changed paging system messages
  • the terminal device receives second indication information, where the second indication information indicates that the network device supports sending the first indication information.
  • the terminal device receives the first indication information in the last superframe in the discontinuous reception acquisition period, and the terminal device receives the first indication information in the time domain where the first indication information is located according to the first indication information system message.
  • the changed paging system message is received at the start boundary of the next superframe or the next system frame whose frame number is 0.
  • the low-capability terminal device can determine the time domain position where the changed paging system message is located according to the superframe where the first indication information is located.
  • the modified paging system message is received at the start boundary of the next superframe of the time domain position bearing the first indication information.
  • the time domain where the changed paging system message is located can be determined according to the next system frame with frame number 0 Location.
  • the first indication information includes information about a time domain position where the changed paging system message is located, and the terminal device receives the changed paging system message according to the time domain position.
  • the low-capability terminal device can directly receive the changed paging system message according to the time domain position indicated by the first indication information, compared with the start boundary of the next superframe or the next frame number being 0
  • the scheme of receiving the changed paging system message in the system frame is more flexible.
  • the terminal device when the first value label in the changed system message is different from the local value label, the terminal device receives the changed system message.
  • the terminal device when the terminal device initiates a network connection, it checks the first value tag in the changed system message (it should be understood that the changed system message includes other system messages not related to paging), and judges whether the first value tag is Whether a value label is the same as the locally pre-stored value label, if different, the changed system message will be received, if they are the same, the changed system message will not be received.
  • This solution can reduce the number of times the terminal equipment receives system messages, thereby saving power consumption.
  • the first indication information is carried in a paging message.
  • a communication method is provided.
  • the method may be executed by a terminal device, or may also be executed by a chip or a circuit configured in the terminal device, which is not limited in this application.
  • the method includes: when the discontinuous reception period is greater than the broadcast control channel change period, receiving third indication information, where the third indication information is a system message change indication using the discontinuous reception period (that is, the third indication information is a system message change indication using the discontinuous reception period).
  • a message change indication instructing the terminal device to receive the changed system message according to the discontinuous reception cycle
  • the third indication information receive the changed system message at the start boundary of the next broadcast control channel change cycle of the first broadcast control channel change cycle
  • a system message, the third indication information is carried in the first broadcast control channel change period.
  • the terminal device when the terminal device does not receive the first indication information, the terminal device can receive the changed system message according to the third indication information, which can also reduce the frequent reception of system messages by low-capability terminal devices to a certain extent, thereby saving power. consumption.
  • a communication method is provided.
  • the method may be executed by a network device, or may also be executed by a chip or a circuit configured in the network device, which is not limited in this application.
  • the method includes: when the discontinuous reception period is greater than the change period of the broadcast control channel, the network device sends first indication information, the first indication information indicates that the paging system message is changed, and the first indication information includes the changed paging information The information system message at the time domain location where the system message is located. Or, when the discontinuous reception period is greater than the broadcast control channel change period, the network device sends the first indication information, the first indication information indicates that the paging system message is changed, and the first indication information also indicates the changed paging system information.
  • the time domain position where the message is located is the start boundary of the next superframe of the time domain position where the first indication information is located or the next system frame whose frame number is 0.
  • the network device sends the changed paging system message.
  • the network device can instruct the terminal device to receive the changed system message related to paging through the first indication information, which can avoid the terminal not supporting superframe A device, such as a low-capability terminal device, frequently receives system messages, thereby saving power consumption of the low-capability terminal device.
  • the second indication information is sent to the terminal device, where the second indication information indicates that the network device supports sending the first indication information.
  • the network device sends the first indication information in the last superframe in the discontinuous reception acquisition period, indicating that the terminal device is in the next superframe at the time domain position where the first indication information is located.
  • the changed paging system message is received at the start boundary of the system frame or the next system frame whose frame number is 0.
  • the network device sends the changed paging system message on the system frame whose frame number is 0 next to the last superframe.
  • the low-capability terminal device can determine the time domain position where the changed paging system message is located according to the superframe where the first indication information is located.
  • the time domain position of the changed paging system message can be determined according to the next system frame whose frame number is 0.
  • the first indication information includes information about a time domain position where the changed paging system message is located, and the network device sends the changed paging system message according to the time domain position.
  • the network device may include time-domain position information in the first indication information so that the terminal device can receive the changed paging system message more accurately, compared with the terminal device according to the start boundary or next superframe
  • the scheme of receiving the changed paging system message in a system frame whose frame number is 0 is more flexible.
  • the first indication information is carried in a paging message.
  • a communication method is provided.
  • the method may be executed by a network device, or may also be executed by a chip or a circuit configured in the network device, which is not limited in this application.
  • the method includes: when the discontinuous reception period is greater than the broadcast control channel change period, the network device sends third indication information, where the third indication information is a system message change indication using the discontinuous reception period, and the network device according to The third indication information sends the changed system message at the start boundary of the next broadcast control channel change period of the first broadcast control channel change period, and the third indication information is carried in the first broadcast control channel change period.
  • the terminal device when the network device does not support sending the first indication information, the terminal device can receive the changed system message according to the third indication information, which can also reduce the frequent reception of system messages by low-capability terminal devices to a certain extent, thereby saving power. consumption.
  • a communication device may be a terminal device, or may also be a chip or a circuit configured in the terminal device, which is not limited in this application.
  • the device includes a transceiver unit: when the discontinuous reception period is greater than the broadcast control channel change period, the transceiver unit is used to receive first indication information, the first indication information indicates that the paging system message is changed, and the first indication information It includes information about the time domain location where the changed paging system message is located.
  • the transceiver unit is used to receive first indication information, the first indication information indicates that the paging system message is changed, and the first indication information also indicates that the time domain position where the changed paging system message is located is the first indication information The start boundary of the next superframe at the time domain position or the next system frame whose frame number is 0.
  • the transceiver unit is also used for receiving the changed paging system message. Based on the above solution, when the discontinuous reception period is greater than the change period of the broadcast control channel, the terminal device can receive the changed paging system message according to the first indication information from the network device, which can prevent low-capability terminal devices from frequently receiving system messages , thereby saving power consumption of low-capability terminal equipment.
  • the transceiving unit is further configured to receive second indication information, where the second indication information indicates that the network device supports sending the first indication information.
  • the transceiving unit is specifically configured to receive the first indication information in the last superframe in the discontinuous reception acquisition period, and the processing unit is specifically configured to control the transceiving The unit is at the start boundary of the next superframe of the last superframe or the next system frame with frame number 0.
  • the first indication information includes a time domain position where the changed paging system message is located, and the transceiver unit is specifically configured to receive the changed paging system message according to the time domain position.
  • the processing unit is specifically configured to determine that the first value tag in the changed system message is different from the local value tag, and the transceiving unit is configured to receive the changed system message.
  • the first indication information is carried in a paging message.
  • a communication device may be a terminal device, or may also be a chip or a circuit configured in the terminal device, which is not limited in this application.
  • the device includes a processing unit and a transceiver unit: when the discontinuous reception period is greater than the broadcast control channel change period, the transceiver unit is used to receive third indication information, the third indication information being a system message using the discontinuous reception period change instructions.
  • the processing unit is configured to control the transceiver unit to receive the changed system message at the start boundary of the next broadcast control channel change period of the first broadcast control channel change period according to the third indication information, the third indication information is carried in the first broadcast control channel change period Within a broadcast control channel change period.
  • the terminal device when the terminal device does not receive the first indication information, the terminal device can receive the changed system message according to the third indication information, which can also reduce the frequent reception of system messages by low-capability terminal devices to a certain extent, thereby saving power. consumption.
  • a communication device in a seventh aspect, may be a network device, or may also be a chip or a circuit configured in the network device, which is not limited in this application.
  • the device includes a transceiver unit: when the discontinuous reception period is greater than the broadcast control channel change period, the transceiver unit is used to send first indication information, the first indication information indicates that the paging system message is changed, and the first indication information includes Information about the time domain location where the changed paging system message is located. Or, when the discontinuous reception period is greater than the broadcast control channel change period, the transceiver unit is used to send the first indication information, the first indication information indicates that the paging system message is changed, and the first indication information also indicates the changed paging system information.
  • the time domain position where the paging system message is located is the start boundary of the next superframe or the next system frame whose frame number is 0 at the time domain position where the first indication information is located.
  • the transceiver unit is also used for sending the changed paging system message.
  • the network device can use the first indication information to instruct the terminal device to receive the changed system message related to paging, which can prevent low-capability terminal devices from frequently receiving system messages, thereby saving power consumption for low-capability end devices.
  • the control transceiver unit when the processing unit determines that the broadcast supports the paging system message change indication, the control transceiver unit sends second indication information to the terminal device, where the second indication information indicates that the network device supports sending the first indication information.
  • the transceiver unit is specifically configured to send the first indication information in the last superframe in the discontinuous reception acquisition period, and the processing unit is specifically configured to control the first indication information according to the first indication information
  • the transceiver unit sends the changed paging system message on the system frame whose frame number is 0 next to the last superframe.
  • the first indication information includes information about a time domain position where the changed paging system message is located, and the transceiver unit is specifically configured to send the changed paging system message according to the time domain position .
  • the first indication information is carried in a paging message.
  • a communication device may be a network device, or may also be a chip or a circuit configured in the network device, which is not limited in this application.
  • the device includes a processing unit and a transceiver unit: when the discontinuous reception period is greater than the broadcast control channel change period, the transceiver unit is used to send third indication information, and the third indication information is a system message using the discontinuous reception period The change indication, the processing unit is further configured to control the transceiver unit to send the changed system message at the start boundary of the next broadcast control channel change period of the first broadcast control channel change period according to the third indication information, the third indication The information is carried in the first broadcast control channel modification period.
  • the terminal device when the network device does not support sending the first indication information, the terminal device can receive the changed system message according to the third indication information, which can also reduce the frequent reception of system messages by low-capability terminal devices to a certain extent, thereby saving power. consumption.
  • a ninth aspect provides a communication device, which may be the terminal device in the first aspect or the second aspect, or an electronic device configured in the terminal device, or a larger device including the terminal device.
  • the device is used to execute the method provided in the first aspect or the second aspect.
  • the communication device includes a transceiver.
  • the device further includes a processor, which is coupled to the memory and can be used to execute instructions in the memory, so as to realize the first aspect, the second aspect, and any possible implementation of the first aspect and the second aspect methods in methods.
  • the device further includes a memory, and the memory and the processor may be deployed separately or in a centralized manner.
  • the device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, or an input/output interface.
  • the device is a chip configured in a terminal device.
  • the communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or chip system.
  • the processor may also be embodied as a processing circuit or logic circuit.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • the above-mentioned processor can be one or more chips
  • the input circuit can be an input pin
  • the output circuit can be an output pin
  • the processing circuit can be a transistor, a gate circuit, a flip-flop and various logic circuits, etc. .
  • the input signal received by the input circuit may be received and input by the receiver, but the signal output by the output circuit may be but not limited to be output to the transmitter and transmitted by the transmitter, and the input circuit and the output circuit may be The same circuit, which is used as an input circuit and an output circuit at different times.
  • the embodiment of the present application does not limit the specific implementation manners of the processor and various circuits.
  • a communication device is provided, and the device may be the network device in the third aspect or the fourth aspect, or an electronic device configured in the network device, or a larger device including the network device.
  • the device is used to execute the method provided in the third aspect or the fourth aspect.
  • the device includes a transceiver.
  • the device further includes a memory
  • the processor is coupled to the memory, and can be used to execute instructions in the memory, so as to realize the third aspect, the fourth aspect, and any possible implementation manner in the third aspect and the fourth aspect communication method in .
  • the communication device further includes a memory, and the memory and the processor may be deployed separately or in a centralized manner.
  • the device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, or an input/output interface.
  • the device is a chip configured in a network device.
  • the communication interface may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or chip system.
  • the processor may also be embodied as a processing circuit or logic circuit.
  • a computer program product includes: a computer program (also referred to as code, or an instruction), when the computer program is executed, the computer executes the above-mentioned first to fourth aspects. aspect and the method in any possible implementation manner of the first aspect to the fourth aspect.
  • a computer-readable storage medium stores a computer program (also referred to as code, or instruction) when it is run on a computer, so that the computer executes the above-mentioned first aspect to the fourth aspect and the method in any possible implementation manner of the first aspect to the fourth aspect.
  • a computer program also referred to as code, or instruction
  • a communication system including the above-mentioned network device and terminal device.
  • FIG. 1 is a schematic diagram of a communication system 100 applicable to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a communication network architecture in the communication system 100 provided by the present application.
  • FIG. 3 is a position distribution diagram of a communication message in the time domain provided by the present application.
  • Fig. 4 is a schematic flowchart of a communication method provided by the present application.
  • FIG. 5 is a position distribution diagram of another communication message in the time domain provided by the embodiment of the present application.
  • FIG. 6 is a position distribution diagram of another communication message in the time domain provided by the embodiment of the present application.
  • FIG. 7 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • Fig. 8 is a schematic flowchart of another communication method provided by the embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • Fig. 10 is a schematic block diagram of a network device provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a communication system 100 applicable to an embodiment of the present application.
  • the communication system 100 may include a network device, for example, the macro base station 20 and the small base station 21 or 22 shown in FIG. 1 .
  • the communication system 100 may further include at least one terminal device, for example, the terminal device 10 shown in FIG. 1 .
  • the terminal device 10 is located within the coverage of one or more cells (carriers) provided by the macro base station 20 , and there may be one or more cells serving the terminal device 10 .
  • the terminal device 10 can work in a carrier aggregation (carrier aggregation, CA), dual connectivity (dual connectivity, DC) or coordinated multipoint transmission manner.
  • At least one cell provides at least one numerology and at the same time provides radio resources for the terminal device 10 .
  • Connections and communications can be established between terminal devices and network devices, and between terminal devices.
  • the sending device can indicate the scheduling information of the data through the control information, so that the receiving device can correctly receive the data according to the control information.
  • the terminal equipment in the embodiment of the present application may refer to user equipment, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user device .
  • the terminal in the 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 (virtual reality, VR) terminal, an augmented reality (augmented reality, AR) terminal, an industrial Wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety Wireless terminals in smart cities, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop ( wireless local loop (WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, 5G network A terminal or
  • wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories.
  • Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the terminal device may also be a terminal device in an Internet of Things (internet of things, IoT) system.
  • IoT Internet of things
  • Its main technical feature is to connect objects to the network through communication technology, so as to realize the intelligent network of human-machine interconnection and object interconnection.
  • the present application does not limit the specific form of the terminal device.
  • the terminal device may be a device for realizing the function of the terminal device, or may be a device capable of supporting the terminal device to realize the function, such as a chip system, and the device may be installed in the terminal.
  • the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.
  • the network device in this embodiment of the present application may be any device with a wireless transceiver function.
  • the equipment includes but is not limited to: evolved Node B (evolved Node B, eNB), radio network controller (Radio Network Controller, RNC), node B (Node B, NB), radio network controller (radio network controller, RNC ), 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), base band unit (Base Band Unit, BBU) , the access point (Access Point, AP), wireless relay node, wireless backhaul node, transmission point (transmission point, TP) or transmission and reception point (transmission and reception point) in the wireless fidelity (Wireless Fidelity, WIFI) system , TRP), etc., can also be 5G, such as, NR, gNB in the system, or, transmission point (TRP or TP), one
  • the network device may include a centralized unit (centralized unit, CU) and a DU, or an access network (radio access network, RAN) device including a CU node and a DU node.
  • a centralized unit centralized unit, CU
  • RAN radio access network
  • the RAN equipment including the CU node and the DU node separates the protocol layer of the eNB in the LTE system, and the functions of some protocol layers are placed in the centralized control of the CU, and the remaining part or all of the functions of the protocol layer are distributed in the In the DU, the CU centrally controls the DU.
  • the gNB may also include an active antenna unit (active antenna unit, AAU for short).
  • the CU implements some functions of the gNB, and the DU implements some functions of the gNB.
  • the CU is responsible for processing non-real-time protocols and services, and realizing the functions of radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP) layer.
  • the DU is responsible for processing physical layer protocols and real-time services, realizing the functions of the radio link control (radio link control, RLC) layer, media access control (media access control, MAC) layer and physical (physical, PHY) layer.
  • the AAU implements some physical layer processing functions, radio frequency processing and related functions of active antennas.
  • the network device may be a device including one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into network devices in the RAN, and the CU can also be divided into network devices in a core network (core network, CN), which is not limited in this application.
  • the network device may be a device for realizing the function of the network device, or may be a device capable of supporting the network device to realize the function, such as a chip system, and the device may be installed in the network device.
  • the network devices and terminal devices in the embodiments of the present application can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; or deployed on water; or deployed on airplanes, balloons and satellites in the air.
  • the embodiments of the present application do not limit the application scenarios of the network device and the terminal device.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • general packet radio service general packet radio service
  • LTE LTE frequency division duplex
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunications system
  • WiMAX worldwide interconnection microwave access
  • 5G fifth generation, 5G
  • 5G fifth generation, 5G
  • 5G fifth generation, 5G
  • future evolution communication system vehicle to other devices
  • V2X can include vehicle to Internet (vehicle to network, V2N), vehicle to vehicle (vehicle to vehicle, V2V), vehicle to infrastructure (vehicle to infrastructure, V2I), Vehicle to pedestrian (vehicle to pedestrian, V2P), etc.
  • V2X can include vehicle to Internet (vehicle to network, V2N), vehicle to vehicle (vehicle to vehicle, V2V), vehicle to infrastructure (vehicle to infrastructure, V2I), Vehicle to pedestrian (vehicle to pedestrian, V
  • this application can be applied to independently deployed 5G or LTE systems, and can also be applied to non-independently deployed 5G or LTE systems, such as DC scenarios, including dual connectivity (E-UTRA-NR dual connectivity, EN-DC), etc. , and carrier aggregation (CA) scenarios.
  • DC scenarios including dual connectivity (E-UTRA-NR dual connectivity, EN-DC), etc.
  • CA carrier aggregation
  • FIG. 2( a ) shows a communication network architecture in the communication system 100 provided in this application, and the embodiments provided later can all be applicable to this architecture.
  • the first network device is a source network device (or called, a working network device, or a serving network device) of a terminal device (subsequently described with UE as an example), and the second network device is a target network device (or called, Standby network device), that is, a network device that provides services for the UE after handover.
  • target network device or called, Standby network device
  • failure can be understood as failure of a network device, and/or failure to provide services for one or more UEs due to other reasons, referred to as failure for short.
  • the "handover” mentioned in this application refers to the handover of the network device providing service for the UE, and is not limited to "cell handover".
  • a network device is used as an example for description.
  • the "handover” may refer to a handover caused by a change in the base station serving the UE. For example, when the source base station of the UE fails, the standby base station provides services for the UE. For another example, during the handover process of the UE from the source base station to communicating with another base station, the handover target base station provides services for the UE.
  • the cell accessed by the UE before and after the handover may be changed or not changed.
  • the backup network device is a relative concept, for example, with respect to one UE, base station 2 is the backup network device of base station 1, and with respect to another UE, base station 1 is the backup network device of base station 2.
  • the first network device and the second network device may be two different devices, for example, the first network device and the second network device are two different base stations.
  • the first network device and the second network device may also be two sets of functional modules in the same device.
  • the functional modules may be hardware modules, or software modules, or hardware modules and software modules.
  • the first network device and the second network device are located in the same base station, and are two different functional modules in the base station.
  • the first network device and the second network device are not transparent to the UE. When the UE interacts with the corresponding network device, it can know which network device it is interacting with. In another implementation manner, the first network device and the second network device are transparent to the UE.
  • the UE is able to communicate with network devices, but does not know which of the two network devices it is interacting with. In other words, for the UE, it may be considered that there is only one network device.
  • the first network device and the second network device may not be transparent to the UE, or may be transparent.
  • the first network device, the second network device, and the terminal device may be respectively the first network device and the second network device in the network architecture shown in (a) in FIG.
  • the steps indicated by dotted lines are optional steps, which will not be described in detail in the following.
  • FIG. 2(b) shows another communication network architecture in the communication system 100 provided by the present application.
  • the communication system includes CN and RAN.
  • the network equipment (for example, base station) in the RAN includes a baseband device and a radio frequency device.
  • the baseband device can be implemented by one or more nodes, and the radio frequency device can be remote from the baseband device and implemented independently, or can be integrated into the baseband device, or partly remote and partly integrated into the baseband device.
  • Network devices in the RAN may include a centralized unit (CU) and a distributed unit (DU), and multiple DUs may be centrally controlled by one CU.
  • CU and DU can be divided according to their wireless network protocol layer functions.
  • the functions of the PDCP layer and above protocol layers are set in the CU, and the protocol layers below the PDCP, such as the functions of the RLC layer and the MAC layer, are set in the DU. It should be noted that the division of such protocol layers is only an example, and may also be divided in other protocol layers.
  • the radio frequency device can be remote, not placed in the DU, or integrated in the DU, or partially remote and partially integrated in the DU, which is not limited in this application.
  • FIG. 2(c) shows another communication network architecture in the communication system 100 provided by the present application.
  • the control plane (CP) and user plane (UP) of the CU can also be separated into different entities for implementation, namely the control plane CU entity (CU-CP entity) and the user plane Surface CU entity (CU-UP entity).
  • the signaling generated by the CU can be sent to the UE through the DU, or the signaling generated by the UE can be sent to the CU through the DU.
  • the DU can directly transmit the signaling to the UE or CU through protocol layer encapsulation without parsing the signaling.
  • a CU is classified as a network device on the RAN side.
  • a CU may also be classified as a network device on the CN side, which is not limited in this application.
  • the difference between the first terminal device and the second terminal device may include at least one of the following:
  • the carrier bandwidth of the first terminal device is not greater than 50 MHz, such as at least one of 50 MHz, 40 MHz, 20 MHz, 15 MHz, 10 MHz or 5 MHz, and the carrier bandwidth of the second terminal device is greater than 50 MHz.
  • the number of transceiver antennas is different.
  • the first terminal device may support 2 receiving and 1 transmitting (2 receiving antennas and 1 transmitting antenna), or 1 receiving and 1 transmitting (1 receiving antenna and 1 transmitting antenna).
  • the second terminal device may support 4 receptions and 2 transmissions (4 receiving antennas and 2 transmitting antennas). It can be understood that, under the condition of achieving the same data transmission rate, since the number of transceiver antennas of the first terminal device is less than the number of transceiver antennas of the second terminal device, the data transmission between the first terminal device and the base station The maximum coverage that can be achieved is smaller than the maximum coverage that can be achieved by data transmission between the second terminal device and the base station.
  • the maximum uplink transmit power is different.
  • the maximum uplink transmit power of the first terminal device may be a value from 4 decibel milliwatts (dBm) to 20 dBm.
  • the maximum uplink transmit power of the second terminal device may be 23dBm or 26dBm.
  • the protocol version is different.
  • the first terminal device may be NR version 17 (release-17, Rel-17) or a terminal device in a version later than NR Rel-17.
  • the second terminal device may be, for example, a terminal device in NR release 15 (release-15, Rel-15) or NR release 16 (release-16, Rel-16).
  • the second terminal device may also be called an NR legacy (NR legacy) terminal device.
  • the first terminal device does not support carrier aggregation
  • the second terminal device may support carrier aggregation.
  • both the first terminal device and the second terminal device may support carrier aggregation, but the maximum number of carrier aggregations supported by the first terminal device at the same time is smaller than the maximum number of carrier aggregations supported by the second terminal device at the same time, for example, the first The terminal device supports aggregation of at most 2 carriers at the same time, and the second terminal device can support aggregation of at most 5 carriers or 32 carriers at the same time.
  • the first terminal device supports half-duplex frequency division duplexing (frequency division duplexing, FDD).
  • the second terminal device supports full-duplex FDD.
  • Data processing time capabilities are different.
  • the minimum time delay between the first terminal device receiving the downlink data and sending the feedback on the downlink data is greater than the minimum time delay between the second terminal device receiving the downlink data and sending the feedback on the downlink data; and/or, The minimum time delay between the first terminal device sending the uplink data and receiving the feedback on the uplink data is greater than the minimum time delay between the second terminal device sending the uplink data and receiving the feedback on the uplink data.
  • the baseband processing capability of the first terminal device is lower than the baseband processing capability of the second terminal device.
  • the baseband processing capability may include at least one of the following: the maximum number of MIMO layers supported by the terminal device for data transmission, the number of HARQ processes supported by the terminal device, and the maximum transmission block size (transmission block size, TBS) supported by the terminal device.
  • the transmission peak rates of uplink and/or downlink are different.
  • the transmission peak rate refers to the maximum data transmission rate that a terminal device can achieve within a unit time (for example, per second).
  • the uplink peak rate supported by the first terminal device may be lower than the uplink peak rate supported by the second terminal device, and/or the downlink peak rate supported by the first terminal device may be lower than the downlink peak rate supported by the second terminal device.
  • the peak uplink rate of the first terminal device is less than or equal to 50 Mbps
  • the peak downlink rate is less than or equal to 150 Mbps
  • the peak uplink rate of the second terminal device is greater than or equal to 50 Mbps
  • the peak downlink rate is greater than or equal to 150 Mbps.
  • the peak uplink rate or downlink rate of the first terminal device is on the order of hundreds of Mbps
  • the peak uplink rate or peak downlink rate of the second terminal device is on the order of Gbps.
  • the buffer size is different.
  • the cache buffer can be understood as the total size of the Layer 2 (Layer 2, L2) cache, which is defined as the word buffered by the terminal device in the radio link control (radio link control, RLC) transmission window and reception and reordering window for all radio bearers. The sum of the number of sections and the number of bytes buffered in the packet data convergence protocol (PDCP) reordering window.
  • the cache buffer can also be understood as the total number of soft channel bits that can be used for hybrid automatic repeat request (HARQ) processing.
  • HARQ hybrid automatic repeat request
  • the first terminal device may be a REDCAP terminal device in the NR system, or the first terminal device may also be called a low-capability terminal device, a reduced-capability terminal device, REDCAP UE, or Reduced Capacity UE, mMTC UE, etc.
  • the NR system may also include other terminal devices, such as a second terminal device.
  • the second terminal device may be a traditional capability or/normal capability/high capability terminal device, and may also be called a traditional terminal device or Legacy UE.
  • the second terminal device It has the above-mentioned distinguishing features from the first terminal device.
  • DRX cycle In the embodiment of this application, it is a discontinuous reception cycle, which is used for the terminal device to receive the PDCCH discontinuously in the RRC connected state, or for the terminal device to receive paging messages in the idle state.
  • eDRX cycle In the embodiment of this application, it is an extended discontinuous reception cycle, which is longer than the normal DRX cycle.
  • BCCH MP In the embodiment of this application, it is the change period of the broadcast channel. System information will not change during this cycle, and the MP can be configured to be N times the DRX cycle, where N is an integer greater than or equal to 1. MP can also be configured to be shorter than the DRX cycle.
  • the system information change notification methods are divided into the following two types:
  • the network device When the DRX cycle is less than or equal to BCCH MP, the network device sends a paging message to the terminal device, and the paging message includes a system message change indication. Correspondingly, after receiving the system message change indication, the terminal device receives the changed system message at the boundary point between the first MP and the next MP. It should be understood that the terminal device receives the system information change indication in the first MP.
  • the DRX cycle at this time can be considered as the eDRX cycle.
  • the network device sends a paging message to the terminal device, and the paging message includes a system message change instruction using the eDRX cycle (using the eDRX cycle, that is, the terminal device can determine the time domain position according to the eDRX cycle to receive the changed system message).
  • the terminal device acquires the changed system message at the boundary of the eDRX acquisition period.
  • the DRX cycle is longer than the BCCH MP, and the length of the DRX cycle includes the length of multiple BCCH MPs.
  • M-eDRX is the eDRX acquisition cycle.
  • One superframe is equal to 1024 system frames (system frame number, SFN).
  • a paging message including a system message change indication using an eDRX cycle is received within a superframe of the start boundary of the nth MP, and a system message is received at the boundary of an eDRX acquisition cycle.
  • the system information obtained by the terminal device at the boundary of M-DRX may be considered as related to paging, and the system information changed in the M-DRX cycle may be considered as not related to paging.
  • the above solution can enable the terminal device to be paged or found by the network device or the base station when a long DRX cycle is configured for the terminal device.
  • a long DRX cycle is configured for the terminal device.
  • subsequent terminal devices will receive changed system messages again when initiating a connection with the network side.
  • the maximum configured DRX cycle does not exceed 10.24 seconds.
  • the DRX cycle of the first terminal device is greater than BCCH MP, and the first terminal device does not support H-SFN, the system message changes, it is difficult for the first terminal device to accurately find the read or receive changed system message borders.
  • Fig. 4 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • the method 200 shown in FIG. 4 includes:
  • Step S230 In the case that the discontinuous reception cycle is greater than the change cycle of the broadcast control channel, the network device sends first indication information to the terminal device, where the first indication information indicates that the paging system message is changed. Correspondingly, the terminal device receives the first indication information.
  • the method 200 includes step S210: the terminal device or the network device determines that the DRX cycle is greater than the BCCH MP.
  • the paging system message is a system message including paging configuration.
  • the first indication information may be carried in a paging message, or the first indication information may also be carried in downlink control information (downlink control information, DCI) of a scheduling paging message.
  • downlink control information downlink control information, DCI
  • the first indication information also indicates the time domain position where the changed paging system message is located.
  • the time domain position where the changed paging system message is located is the start boundary of the next superframe or the next system frame whose frame number is 0 at the time domain position where the first indication information is located.
  • the network device sends the first indication information in the DRX acquisition period, and correspondingly, the terminal device receives the first indication information in the DRX acquisition period.
  • the first indication information is carried in the last superframe in the DRX acquisition cycle.
  • the terminal device monitors the paging message (Paging) in an idle state or an inactive state (inactive).
  • the DRX cycle is greater than the BCCH MP, and the length of the DRX cycle includes the length of multiple BCCH MPs.
  • the small square in the figure is a superframe, and M-eDRX is the eDRX acquisition period.
  • the length of M-eDRX is at least m superframes, and m is an integer greater than or equal to 1.
  • m 256.
  • the terminal device receives the paging message including the system information change indication using the eDRX cycle within the superframe of the start boundary of the nth MP.
  • the terminal device receives a paging message in the last superframe in the DRX acquisition period, and the paging message includes first indication information, for example, Paging includes a paging system information modification information element (PagingSIModification).
  • PagingSIModification paging system information modification information element
  • the DRX acquisition cycle length is 256 superframes.
  • the MCCH MP length is 5 system frames (the length of a system frame is 10 milliseconds), and the DRX or eDRX cycle configured by the terminal device is 10 system frames.
  • the network device can send the first indication information to the terminal device in the paging opportunity in the 256th superframe.
  • the terminal equipment that is interested in changing can receive the updated system information at the end of the 256th superframe and the beginning of the 257th superframe; for terminal equipment that does not support HSFN, it can pass the first indication information, and the next system frame number is The time domain position of 0 starts receiving updated system messages. That is, this solution can be applied not only to terminal equipment that does not support HSFN, but also to terminal equipment that is only interested in paging-related system messages.
  • the first indication information is carried in one of the superframes in the DRX acquisition period, and the first indication information includes information about the time domain position where the changed paging system message is located.
  • the terminal device monitors the paging message (Paging) in the idle state or inactive state (inactive), as shown in FIG. 6, the DRX cycle is greater than the BCCH MP, and the length of the DRX cycle includes the length of multiple BCCH MPs.
  • the small square in the figure is a superframe, and M-eDRX is the eDRX acquisition period.
  • the terminal device receives the paging message including the system information change indication using the DRX cycle within the superframe of the nth MP's start boundary.
  • the terminal device receives a paging message in one of the superframes in the DRX acquisition period (not at the boundary of the DRX acquisition period), and the paging message includes first indication information, and the first indication information includes time domain position information, such as frame number, subframe number, or the system frame whose Nth frame number is n, where N ⁇ 1, n ⁇ 0.
  • the DRX acquisition cycle length is 256 superframes.
  • the length of MCCH MP is 5 system frames, and the DRX or eDRX period configured by the terminal device is 10 system frames.
  • the network device may send the first indication information to the terminal device in the paging opportunity in the 200th superframe, and the first indication information indicates The updated system message is received on the first system frame whose frame number is 1; the terminal device that does not support HSFN can start to receive the updated system message through the specific time domain position indicated by the first indication information.
  • this solution can be applied not only to terminal equipment that does not support HSFN, but also to terminal equipment that is only interested in paging-related system messages.
  • the low-capability terminal device can directly receive the changed paging system message according to the time domain position indicated by the first indication information, compared with the start boundary of the next superframe or the next frame number being 0
  • the scheme of receiving the changed paging system message in the system frame is more flexible.
  • the method 200 may further include step S220, judging whether the broadcast of the network device supports the paging system message change indication.
  • the second indication information is sent to the terminal device, that is, step S221.
  • the terminal device receives the second indication information, where the second indication information indicates that the network device supports sending the first indication information.
  • the second indication information is carried in system messages, such as system information blocks (system information blocks, SIB) messages: SIB1, SIB2 and so on.
  • SIB system information blocks
  • the terminal device can try to use the default paging cycle configured by the network device, or a smaller cycle in the RAN paging cycle, in a way that the DRX cycle is smaller than the MCCH MP, and try to use all or part of the The changed system message boundary receives changed system messages.
  • Step S240 the network device sends the changed paging system message, and correspondingly, the terminal device receives the changed paging system message according to the first indication information.
  • the terminal device receives the changed paging system message according to the time domain position where the first indication information is located. That is, the first indication information implicitly indicates the time domain position where the changed paging system message is located.
  • the paging-related system message is at the start boundary of the next superframe of the last superframe or The next system frame with frame number 0 is updated.
  • a terminal device that supports superframes can receive the changed paging system message according to the start boundary of the next superframe of the last superframe, and a terminal device that does not support superframes can receive the changed paging system message according to the next frame of the last superframe.
  • the system frame numbered 0 receives the changed paging system message.
  • the DRX or eDRX cycle configured for the terminal device is 10 system frames.
  • the first indication information is carried in the paging opportunity in the 256th superframe, and the terminal device can receive the updated system message at the end of the 256th superframe and the beginning of the 257th superframe.
  • the terminal device can receive updated system information at the time domain position where the next system frame number is 0 after the 256th superframe.
  • the network device does not send the first indication information in the paging opportunity before the last superframe of the DRX acquisition cycle, thereby saving power consumption.
  • the network device does not send the first indication information in the paging opportunity before the last superframe of the DRX acquisition cycle, thereby saving power consumption.
  • even sending the first indication information before the last superframe of the DRX acquisition period cannot obtain accurate paging system message change boundaries.
  • system messages include system messages related to paging configuration.
  • the second terminal device it may be determined that the changed system message is received at the start boundary of the next superframe of the last superframe within the DRX acquisition cycle, specifically including the system message related to the paging configuration.
  • the boundary of paging system message change is multiplexed with the DRX acquisition cycle boundary, so that terminal devices that support superframes and terminal devices that do not support superframes can obtain changed system messages at a uniform time point, so network devices do not It is necessary to send updated system messages twice for terminal devices with different capabilities, which saves signaling overhead.
  • the first indication information is carried on one of the superframes in the DRX acquisition period, and the first indication information also indicates the time domain position where the changed paging system message is located. Then, according to the time domain position indicated by the first indication information, the changed system information including paging related information may be acquired.
  • the paging system message is carried on the frame number indicated by the first indication information, the subframe number, or the system frame whose Nth frame number is n, where N ⁇ 1, n ⁇ 0.
  • the DRX acquisition cycle length is 256 superframes
  • the terminal device is configured as DRX or eDRX cycle as 10 system frames.
  • the first indication information is carried in the paging opportunity in the 200th superframe, and the first indication information instructs the terminal device to receive the updated system message on the first system frame with frame number 1 after the 200th superframe .
  • the terminal device can start to receive updated system information at the specific time domain position indicated by the first indication information, that is, the first system frame with frame number 1 after the 200th superframe.
  • the paging system message may be a master information block (master information block, MIB) message and/or an SIB message.
  • MIB master information block
  • step S240 when the terminal device obtains the changed system message:
  • the terminal device needs to check the first value tag (Valuetag) of the changed system message first. If the first value tag is inconsistent with the second value tag, the terminal device receives the changed system message.
  • the binary label is a value label stored locally by the second terminal device.
  • the changed system message may be received when the terminal device initiates a network connection, or may be a system message not related to paging.
  • the above solution can reduce the number of times the terminal device receives system messages, thereby saving power consumption.
  • the terminal device directly receives the changed system message, for example, receives all required system messages.
  • the terminal device After receiving the first indication information, the terminal device starts to receive the changed system message at the corresponding time domain position, where the changed system message may be only the changed system message related to the paging configuration, or all Changed system messages, all changed system messages include changed system messages related to paging.
  • the method 200 is a communication method in which the terminal device receives the first indication information. If the terminal device does not receive the first indication information, it may communicate through the method 300, and the method 300 will be introduced below.
  • FIG. 7 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • the method 300 shown in FIG. 7 includes:
  • step S310 the network device or the terminal device determines that the DRX cycle is greater than the BCCH MP.
  • Step S320 the network device sends third indication information to the terminal device, where the third indication information indicates that the paging system message is changed.
  • the terminal device receives the third indication information.
  • the third indication information may be a system information modification indication using the DRX cycle, which may be carried in a paging message, and the third indication information may be a system information modification information element (SystemInfoModification-eDRX) related to DRX in Paging.
  • the third indication information may be a system message modification indication (for example, SystemInfoModification) for a DRX cycle shorter than the BCCH MP.
  • Step S330 the network device sends the changed system message to the terminal device at the starting boundary of the MP next to the first MP, and the third indication information is carried in the first MP.
  • the terminal device receives the changed system message at the start boundary of the MP next to the first MP.
  • the MCCH MP length is 5 system frames
  • the terminal device is configured as DRX or eDRX cycle as 10 system frames.
  • the network device sends the third indication information to the terminal device in the first MP, that is, the system frame with frame number 0-4, and the terminal device is at the start boundary of the next MP, that is, frame The system frame numbered 5 begins to receive updated system messages.
  • Fig. 8 is a schematic flowchart of another communication method provided by the embodiment of the present application.
  • the method 400 shown in FIG. 8 includes:
  • step S410 the terminal device or the network device determines that the DRX cycle is less than or equal to the BCCH MP.
  • Step S420 the network device sends fourth indication information to the terminal device, where the fourth indication information indicates that the paging system message is changed.
  • the terminal device receives the fourth indication information.
  • the fourth indication information may be a system information modification indication, which may be carried in a paging message, and the fourth indication information may be a system information modification information element (SystemInfoModification) in Paging.
  • SystemInfoModification system information modification information element
  • Step S430 the network device sends the changed system message to the terminal device at the starting boundary of the MP next to the first MP, and the fourth indication information is carried in the first MP.
  • the terminal device receives the changed system message at the start boundary of the MP next to the first MP.
  • the MCCH MP length is 5 system frames
  • the terminal device is configured as DRX or eDRX cycle as 10 system frames.
  • the network device sends the fourth indication information to the terminal device on the first MP, that is, the system frame with frame number 0-4, and the terminal device is at the start boundary of the next MP, that is, The system frame whose frame number is 5 starts to receive the updated system message.
  • DRX acquisition period mentioned above may also be an eDRX acquisition period, and this application does not impose any limitation on this.
  • the methods and operations implemented by the network device may also be implemented by components (such as chips or circuits) that can be used in the network device, and the methods and operations implemented by the terminal device may also be implemented by A component (such as a chip or a circuit) implementation that can be used in a terminal device.
  • components such as chips or circuits
  • a component such as a chip or a circuit
  • each network element such as a transmitting end device or a receiving end device, includes a corresponding hardware structure and/or software module for performing each function in order to realize the above functions.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.
  • the embodiment of the present application can divide the functional modules of the transmitting end device or the receiving end device according to the above method example, for example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module middle.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation. In the following, description will be made by taking the division of each functional module corresponding to each function as an example.
  • Fig. 9 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 500 includes a transceiver unit 510 and a processing unit 520 .
  • the transceiver unit 510 can communicate with the outside, and the processing unit 520 is used for data processing.
  • the transceiver unit 510 may also be called a communication interface or a communication unit.
  • the communication device 500 may be a terminal device, wherein the transceiver unit 510 is used to perform the receiving or sending operation of the terminal device in the method embodiment above, and the processing unit 520 is used to perform the internal processing operation of the terminal device in the method embodiment above .
  • the transceiver unit 510 when the discontinuous reception period is greater than the broadcast control channel change period, the transceiver unit 510 is configured to receive first indication information, the first indication information indicates that the paging system message is changed, and the first indication The information includes information about the time domain location where the changed paging system message is located. Or, when the discontinuous reception period is greater than the broadcast control channel change period, the transceiver unit 510 is configured to receive first indication information, the first indication information indicates that the paging system message is changed, and the first indication information also indicates the change The time domain position where the subsequent paging system message is located is the start boundary of the next superframe or the next system frame whose frame number is 0 at the time domain position where the first indication information is located.
  • the processing unit 520 is configured to control the transceiving unit 510 to receive the changed paging system message according to the first indication information.
  • the transceiving unit 510 is further configured to receive second indication information, where the second indication information indicates that the network device supports sending the first indication information.
  • the transceiving unit 510 receives the changed paging system message according to the time domain position where the first indication information is located.
  • the transceiving unit 510 is specifically configured to receive the first indication information in the last superframe in the discontinuous reception acquisition period.
  • the processing unit 520 is specifically configured to control the transceiving unit 510 to receive the changed paging system message in the system frame whose frame number is 0 next to the last superframe according to the first indication information.
  • the first indication information includes information about the time domain position where the changed paging system message is located, and the transceiver unit 510 is specifically configured to receive the changed paging system message according to the time domain position. information.
  • the processing unit 520 is specifically configured to determine that the first value label in the changed system message is different from the local value label, and the transceiving unit 510 receives the changed system message.
  • the first indication information is carried in a paging message.
  • the transceiver unit 510 when the discontinuous reception period is greater than the broadcast control channel change period, the transceiver unit 510 is configured to receive third indication information, where the third indication information is a system message change using the discontinuous reception period instruct.
  • the processing unit 520 is further configured to control the transceiver unit 510 to receive the changed system message at the start boundary of the next broadcast control channel change period of the first broadcast control channel change period according to the third indication information, the third indication information It is carried in the first broadcast control channel change period.
  • the communication device 500 may further include a storage unit, which may be used to store instructions and/or data, and the processing unit 520 may read instructions or and/or data in the storage unit.
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 520 may read instructions or and/or data in the storage unit.
  • transceiver unit 510 in the terminal device may correspond to the transceiver 710 in the terminal device shown in FIG. 11, and the processing unit 520 in the terminal device may correspond to the transceiver 710 in the terminal device shown in FIG. Processor 720.
  • the transceiver unit 510 in the terminal device can be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it can correspond to the antenna and the control circuit in the terminal device shown in FIG. 11 , the terminal device
  • the processing unit 520 in the terminal device may be implemented by at least one processor, for example, may correspond to the processor in the terminal device shown in FIG. 11 , and the processing unit 520 in the terminal device may also be implemented by at least one logic circuit.
  • the terminal device may further include a storage unit, which may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.
  • a storage unit which may be used to store instructions or data
  • the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.
  • Fig. 10 is a schematic block diagram of another communication device provided by an embodiment of the present application.
  • the communication device 600 includes a transceiver unit 610 and a processing unit 620 .
  • the transceiver unit 610 can communicate with the outside, and the processing unit 620 is used for data processing.
  • the transceiver unit 610 may also be called a communication interface or a communication unit.
  • the communication device 600 may be a network device, wherein the transceiver unit 610 is used to perform the receiving or sending operation of the network device in the method embodiment above, and the processing unit 620 is used to perform the internal processing operation of the network device in the method embodiment above .
  • the communication device 600 may further include a storage unit, which may be used to store instructions and/or data, and the processing unit 620 may read instructions or and/or data in the storage unit.
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 620 may read instructions or and/or data in the storage unit.
  • the transceiver unit 610 when the discontinuous reception period is greater than the broadcast control channel change period, the transceiver unit 610 is configured to send first indication information, the first indication information indicates that the paging system message is changed, and the first indication information It includes information about the time domain location where the changed paging system message is located.
  • the transceiver unit 610 when the discontinuous reception period is greater than the broadcast control channel change period, the transceiver unit 610 is configured to send first indication information, the first indication information indicates that the paging system message is changed, and the first indication information also indicates the changed
  • the time domain position where the paging system message is located is the start boundary of the next superframe or the next system frame whose frame number is 0 at the time domain position where the first indication information is located.
  • the transceiver unit 610 is also used for sending the changed paging system message.
  • the transceiver unit 610 sends second indication information to the terminal equipment, where the second indication information indicates that the network equipment supports sending the first Instructions.
  • the transceiving unit 610 is specifically configured to send the first indication information in the last superframe in the discontinuous reception acquisition period.
  • the transceiver unit 610 is also specifically configured to send the changed paging system message on the system frame whose frame number is 0 next to the last superframe.
  • the first indication information includes a time domain position where the changed paging system message is located, and the transceiving unit 610 is specifically configured to send the changed paging system message according to the time domain position.
  • the first indication information is carried in a paging message.
  • the transceiver unit 610 when the discontinuous reception period is greater than the broadcast control channel change period, the transceiver unit 610 is configured to send third indication information, where the third indication information is a system message change using the discontinuous reception period indication, the processing unit 620 is configured to control the transceiver unit 610 to send the changed system message at the start boundary of the next broadcast control channel change period of the first broadcast control channel change period according to the third indication information, the third indication The information is carried in the first broadcast control channel modification period.
  • the third indication information is a system message change using the discontinuous reception period indication
  • the processing unit 620 is configured to control the transceiver unit 610 to send the changed system message at the start boundary of the next broadcast control channel change period of the first broadcast control channel change period according to the third indication information, the third indication The information is carried in the first broadcast control channel modification period.
  • the network device may further include a storage unit, which may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.
  • a storage unit which may be used to store instructions or data
  • the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.
  • the transceiver unit 610 in the network device can be realized through a communication interface (such as a transceiver or an input/output interface), and the processing unit 620 in the network device can be realized through at least one processor, for example, it can correspond to FIG.
  • the processing unit in the network device shown in 12, the processing unit 620 in the network device may be implemented by at least one logic circuit.
  • FIG. 11 shows a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device 700 may be applicable to the system shown in FIG. 1, FIG. 2(a), 2(b), or 2(c).
  • FIG. 11 only shows main components of the terminal device 700 .
  • the terminal device 700 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control the entire terminal device 700, execute software programs, and process data of the software programs.
  • Memory is primarily used to store software programs and data.
  • the control circuit is mainly used for conversion of baseband signal and radio frequency signal and processing of radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, microphones, keyboards, etc., are mainly used to receive data input by users and output data to users.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the control circuit, and the control circuit performs radio frequency processing on the baseband signal, and sends the radio frequency signal through the antenna in the form of electromagnetic waves.
  • the control circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data .
  • FIG. 11 only shows a memory and a processor.
  • the terminal device 700 may include multiple processors and memories.
  • a storage may also be called a storage medium or a storage device, which is not limited in this embodiment of the present invention.
  • the processor may include a baseband processor and a central processing unit, the baseband processor is mainly used to process communication protocols and communication data, and the central processor is mainly used to control the entire terminal device 700, Executing the software program, processing the data of the software program.
  • the processor in FIG. 11 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit can also be independent processors, interconnected through technologies such as a bus.
  • the terminal device 700 may include multiple baseband processors to adapt to different network standards, the terminal device 700 may include multiple central processors to enhance its processing capability, and various components of the terminal device 700 may be connected through various buses.
  • the baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit may also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and communication data can be built in the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the antenna and the control circuit with the transceiver function can be regarded as the transceiver unit 710 of the terminal device 700, and the processor with the processing function can be regarded as the processing unit 720 of the terminal device 700.
  • the terminal device 700 includes a transceiver unit 710 and a processing unit 720 .
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, and the like.
  • the device in the transceiver unit 710 for realizing the receiving function can be regarded as a receiving unit
  • the device in the transceiver unit 710 for realizing the sending function can be regarded as a sending unit, that is, the transceiver unit 710 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, receiver, receiving circuit, etc.
  • the sending unit may be called a transmitter, transmitter, or transmitting circuit, etc.
  • the embodiment of the present application also provides a network device, which can be used in the foregoing embodiments.
  • the network device includes the network device or the network device described in the embodiment shown in Fig. 2(a), 2(b), or 2(c), Fig. 4, Fig. 7, and/or Fig. 8 means, units and/or circuits for the function of
  • the network device includes a transceiver module, configured to support the terminal device to implement the transceiver function, and a processing module, configured to support the network device to process signals.
  • FIG. 12 shows a schematic structural diagram of a network device provided by an embodiment of the present application.
  • the network device 20 can be applied in the system shown in FIG. 1 , FIG. 2( a ), 2( b ), or 2( c ).
  • the network device 20 is, for example, the network device 20 shown in FIG. 1 .
  • the network device 20 may have its corresponding functions as a first network device with respect to certain or some UEs, or may have its corresponding functions as a second network device with respect to some or some UEs. Function.
  • the network device includes: a baseband device 201 , a radio frequency device 202 , and an antenna 203 .
  • the radio frequency device 202 receives the information sent by the terminal device through the antenna 203, and sends the information sent by the terminal device to the baseband device 201 for processing.
  • the baseband device 201 processes the information of the terminal device and sends it to the radio frequency device 202
  • the radio frequency device 202 processes the information of the terminal device and sends it to the terminal device through the antenna 203 .
  • the baseband device 201 includes one or more processing units 2011 , a storage unit 2012 and an interface 2013 .
  • the processing unit 2011 is configured to support the network device to execute the functions of the network device in the foregoing method embodiments.
  • the storage unit 2012 is used to store software programs and/or data.
  • the interface 2013 is used for exchanging information with the radio frequency device 202, and the interface includes an interface circuit for input and output of information.
  • the processing unit is an integrated circuit, such as one or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.
  • the storage unit 2012 and the processing unit 2011 may be located in the same chip, that is, an on-chip storage element. Alternatively, the storage unit 2012 and the processing unit 2011 may also be located on different chips from the processing unit 2011, that is, an off-chip storage unit.
  • the storage unit 2012 may be one memory, or a general term for multiple memories or storage elements.
  • a network device may implement part or all of the steps in the foregoing method embodiments in the form of one or more processing unit schedulers. For example, the corresponding functions of the network devices in FIG. 2( a ), FIG. 4 , FIG. 7 , and/or FIG. 8 are implemented.
  • the one or more processing units may support wireless access technologies of the same standard, or may support wireless access technologies of different standards.
  • the embodiment of the present application also provides a computer-readable storage medium, on which computer instructions for implementing the method executed by the terminal device or the network device in the foregoing method embodiments are stored.
  • the computer when the computer program is executed by a computer, the computer can implement the methods performed by the terminal device or the network device in the above method embodiments.
  • the embodiment of the present application also provides a computer program product including instructions, and when the instructions are executed by a computer, the computer implements the method executed by the terminal device or the network device in the above method embodiments.
  • the embodiment of the present application also provides a communication system, which includes the network device and the terminal device in the above embodiments.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division.
  • the units described as separate components may or may not be physically separated.
  • the components shown may or may not be physical units, that is, they may be located in one place, or they may be distributed over multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned computer-readable storage medium may be any available medium that can be accessed by a computer.
  • the computer readable medium may include random access memory (random access memory, RAM), read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), Erasable programmable read-only memory (erasable PROM, EPROM), electrically erasable programmable read-only memory (electrically erasable programmable read only memory, EEPROM), compact disc read-only memory (compact disc read-only memory, CD- ROM), universal serial bus flash disk (universal serial bus flash disk), removable hard disk, or other optical disk storage, magnetic disk storage medium, or other magnetic storage device, or can be used to carry or store desired data in the form of instructions or data structures program code and any other medium that can be accessed by a computer.
  • RAM random access memory
  • read-only memory read-only memory
  • ROM programmable read-only memory
  • PROM programmable read-only memory
  • Erasable programmable read-only memory Erasable programmable read-only memory
  • EPROM Er
  • RAM static random access memory
  • dynamic RAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM double data rate SDRAM
  • enhanced SDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory
  • direct rambus RAM direct rambus RAM

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Abstract

本申请提供了一种通信方法和通信装置。该方法包括：在非连续接收周期大于广播控制信道变更周期的情况下，终端设备接收第一指示信息，该第一指示信息指示寻呼系统消息发生变更以及变更后的寻呼系统消息所在的时域位置，根据该第一指示信息接收变更后的寻呼系统消息。本申请提供的通信方法和装置能够避免不支持超帧的终端设备频繁接收系统消息，从而节省功耗。

Description

通信方法和通信装置
本申请要求于2021年6月9日提交中国专利局、申请号为202110644430.7、申请名称为“通信方法和通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，并且，更具体地，涉及通信方法和通信装置。
背景技术
非连续接收(discontinuous reception，DRX)的基本机制是为终端设备配置DRX周期(DRX cycle)，在持续时间(On Duration)时段，终端设备正常监听物理下行控制信道(physical downlink control channel，PDCCH)，在其他时段，终端设备可以进入休眠状态，不接收PDCCH以减少功耗，从而达到省电的目的。
广播控制信道(broadcast control channel，BCCH)中承载的系统消息可能会随着广播控制信道变更周期(modification period，MP)发生变化。当系统消息发生变化时，基站向终端设备发送寻呼消息，寻呼消息中包括系统消息发生变化的指示信息。当DRX周期小于或等于BCCH MP时，终端设备接收变更后的系统消息的时域位置与当DRX周期大于BCCH MP时不同。
5G标准中引入了低复杂度或低能力(reduced capability，REDCAP)的终端设备，REDCAP终端设备相对于普通终端设备带宽更窄、功耗更低、天线数更少等，且不支持超帧。因此REDCAP终端设备如何接收变更的系统消息，是目前需要解决的问题。
发明内容
本申请提供一种通信方法和通信装置，能够避免不支持超帧的终端设备频繁接收系统消息，从而节省功耗。
第一方面，提供了一种通信方法。该方法可以由终端设备执行，或者，也可以由配置于终端设备中的芯片或电路执行，本申请对此不作限定。该方法包括：在非连续接收周期大于广播控制信道变更周期的情况下，终端设备接收第一指示信息，该第一指示信息指示寻呼系统消息发生变更，该第一指示信息包括变更后的寻呼系统消息所在的时域位置的信息。或者，在非连续接收周期大于广播控制信道变更周期的情况下，终端设备接收第一指示信息，该第一指示信息指示寻呼系统消息发生变更，该第一指示信息还指示变更后的寻呼系统消息所在的时域位置为该第一指示信息所在的时域位置的下一个超帧的起始边界或下一个帧号为0的系统帧。终端设备根据该第一指示信息接收变更后的寻呼系统消息。
基于上述方案，在非连续接收周期大于广播控制信道变更周期的情况下，终端设备可以根据来自网络设备的第一指示信息，接收变更后的寻呼系统消息(寻呼系统消息为与寻 呼相关的系统消息)，可以避免不支持超帧的终端设备，例如低能力终端设备，频繁接收系统消息(该系统消息包括变更后的寻呼系统消息)，从而节省低能力终端设备的功耗。
在一种可能的实施方式中，终端设备接收第二指示信息，该第二指示信息指示网络设备支持发送第一指示信息。
在一种可能的实施方式中，终端设备在非连续接收获取周期内的最后一个超帧内接收该第一指示信息，终端设备根据第一指示信息系统消息在该第一指示信息所在的时域位置的下一个超帧的起始边界或下一个帧号为0的系统帧接收变更后的寻呼系统消息。
基于上述方案，低能力终端设备可根据第一指示信息所在的超帧，确定变更后的寻呼系统消息所在的时域位置。
在上述方案中，对于支持超帧的终端设备，在承载第一指示信息的时域位置的下一个超帧的起始边界接收变更后的寻呼系统消息。对于低能力终端设备而言，可能不支持超帧，无法找到下一个超帧的起始边界，此时可根据下一个帧号为0的系统帧确定变更后的寻呼系统消息所在的时域位置。
在一种可能的实施方式中，该第一指示信息包括变更后的寻呼系统消息所在的时域位置的信息，终端设备根据该时域位置接收该变更后的寻呼系统消息。
在上述方案中，低能力终端设备可直接根据第一指示信息所指示的时域位置接收变更后的寻呼系统消息，相较于根据下一个超帧的起始边界或下一个帧号为0的系统帧接收变更后的寻呼系统消息的方案更加灵活。
在一种可能的实施方式中，在变更后的系统消息中的第一值标签与本地值标签不同的情况下，终端设备接收变更后的系统消息。
基于上述方案，终端设备发起网络连接时，检查变更后的系统消息中的第一值标签(应理解，此处变更后的系统消息包括与寻呼不相关的其它的系统消息)，判断该第一值标签是否与本地预存的值标签相同，若不同则接收变更后的系统消息，若相同则不接收变更后的系统消息。该方案能减少终端设备接收系统消息的次数，从而节省功耗。
可选地，该第一指示信息承载于寻呼消息中。
第二方面，提供了一种通信方法。该方法可以由终端设备执行，或者，也可以由配置于终端设备中的芯片或电路执行，本申请对此不作限定。该方法包括：在非连续接收周期大于广播控制信道变更周期的情况下，接收第三指示信息，该第三指示信息为使用该非连续接收周期的系统消息变更指示(即第三指示信息为系统消息变更指示，指示终端设备根据非连续接收周期接收变更后的系统消息)，根据该第三指示信息在第一广播控制信道变更周期的下一个广播控制信道变更周期的起始边界接收变更后的系统消息，该第三指示信息承载于第一广播控制信道变更周期内。
基于上述方案，当终端设备没有接收到第一指示信息时，终端设备可根据第三指示信息接收变更后的系统消息，在一定程度上也能减少低能力终端设备频繁接收系统消息，从而节省功耗。
第三方面，提供了一种通信方法。该方法可以由网络设备执行，或者，也可以由配置于网络设备中的芯片或电路执行，本申请对此不作限定。该方法包括：在非连续接收周期大于广播控制信道变更周期的情况下，网络设备发送第一指示信息，该第一指示信息指示寻呼系统消息发生变更，第一指示信息包括变更后的寻呼系统消息所在的时域位置的信息 系统消息。或者，在非连续接收周期大于广播控制信道变更周期的情况下，网络设备发送第一指示信息，该第一指示信息指示寻呼系统消息发生变更，第一指示信息还指示变更后的寻呼系统消息所在的时域位置为所述第一指示信息所在的时域位置的下一个超帧的起始边界或下一个帧号为0的系统帧。网络设备发送变更后的寻呼系统消息。
基于上述方案，当非连续接收周期大于广播控制信道变更周期的情况下，网络设备可通过第一指示信息指示终端设备接收变更后的与寻呼相关的系统消息，可以避免不支持超帧的终端设备，例如低能力终端设备，频繁接收系统消息，从而节省低能力终端设备的功耗。
在一种可能的实施方式中，在网络设备广播支持寻呼系统消息变更指示的情况下，向终端设备发送第二指示信息，该第二指示信息指示该网络设备支持发送该第一指示信息。
在一种可能的实施方式中，该网络设备在非连续接收获取周期内的最后一个超帧内发送该第一指示信息，指示终端设备在第一指示信息所在的时域位置的下一个超帧的起始边界或下一个帧号为0的系统帧接收变更后的寻呼系统消息。网络设备在该最后一个超帧的下一个帧号为0的系统帧上发送变更后的寻呼系统消息。
基于上述方案，低能力终端设备可根据第一指示信息所在的超帧确定变更后的寻呼系统消息所在的时域位置。
在上述方案中，对于支持超帧的终端设备，确定在承载第一指示信息的时域位置的下一个超帧的起始边界接收变更后的寻呼系统消息，对于低能力终端设备，可能不支持超帧，无法找到下一个超帧的起始边界，此时可根据下一个帧号为0的系统帧确定变更后的寻呼系统消息所在的时域位置。
在一种可能的实施方式中，该第一指示信息包括变更后的寻呼系统消息所在的时域位置的信息，该网络设备根据该时域位置发送该变更后的寻呼系统消息。
在上述方案中，网络设备可在第一指示信息包括时域位置的信息以便终端设备更加准确的接收变更后的寻呼系统消息，相较于终端设备根据下一个超帧的起始边界或下一个帧号为0的系统帧接收变更后的寻呼系统消息的方案更加灵活。
可选地，该第一指示信息承载于寻呼消息中。
第四方面，提供了一种通信方法。该方法可以由网络设备执行，或者，也可以由配置于网络设备中的芯片或电路执行，本申请对此不作限定。该方法包括：在非连续接收周期大于广播控制信道变更周期的情况下，该网络设备发送第三指示信息，该第三指示信息为使用该非连续接收周期的系统消息变更指示，该网络设备根据该第三指示信息在第一广播控制信道变更周期的下一个广播控制信道变更周期的起始边界发送变更后的系统消息，该第三指示信息承载于第一广播控制信道变更周期内。
基于上述方案，当网络设备不支持发送第一指示信息时，终端设备可根据第三指示信息接收变更后的系统消息，在一定程度上也能减少低能力终端设备频繁接收系统消息，从而节省功耗。
第五方面，提供了一种通信装置。该装置可以是终端设备，或者，也可以是配置于终端设备中的芯片或电路，本申请对此不作限定。该装置包括收发单元：在非连续接收周期大于广播控制信道变更周期的情况下，该收发单元用于接收第一指示信息，该第一指示信息指示寻呼系统消息发生变更，该第一指示信息包括变更后的寻呼系统消息所在的时域位 置的信息。或者该收发单元用于接收第一指示信息，该第一指示信息指示寻呼系统消息发生变更，该第一指示信息还指示变更后的寻呼系统消息所在的时域位置为该第一指示信息所在的时域位置的下一个超帧的起始边界或下一个帧号为0的系统帧。该收发单元还用于接收变更后的寻呼系统消息。基于上述方案，在非连续接收周期大于广播控制信道变更周期的情况下，终端设备可以根据来自网络设备的第一指示信息接收变更后的寻呼系统消息，可以避免低能力终端设备频繁接收系统消息，从而节省低能力终端设备的功耗。
在一种可能的实施方式中，该收发单元还用于接收第二指示信息，该第二指示信息指示网络设备支持发送第一指示信息。
在一种可能的实施方式中，该收发单元具体用于在非连续接收获取周期内的最后一个超帧内接收该第一指示信息，该处理单元具体用于根据该第一指示信息控制该收发单元在该最后一个超帧的下一个超帧的起始边界或下一个帧号为0的系统帧。
在一种可能的实施方式中，该第一指示信息包括变更后的寻呼系统消息所在的时域位置，该收发单元具体用于根据该时域位置接收该变更后的寻呼系统消息。
在一种可能的实施方式中，该处理单元具体用于确定变更后的系统消息中的第一值标签与本地值标签不同，该收发单元用于接收变更后的系统消息。
可选地，该第一指示信息承载于寻呼消息中。
第六方面，提供了一种通信装置。该装置可以是终端设备，或者，也可以是配置于终端设备中的芯片或电路，本申请对此不作限定。该装置包括处理单元和收发单元：在非连续接收周期大于广播控制信道变更周期的情况下，该收发单元用于接收第三指示信息，该第三指示信息为使用该非连续接收周期的系统消息变更指示。该处理单元用于根据该第三指示信息控制该收发单元在第一广播控制信道变更周期的下一个广播控制信道变更周期的起始边界接收变更后的系统消息，该第三指示信息承载于第一广播控制信道变更周期内。
基于上述方案，当终端设备没有接收到第一指示信息时，终端设备可根据第三指示信息接收变更后的系统消息，在一定程度上也能减少低能力终端设备频繁接收系统消息，从而节省功耗。
第七方面，提供了一种通信装置。该装置可以是网络设备，或者，也可以是配置于网络设备中的芯片或电路，本申请对此不作限定。该装置包括收发单元：在非连续接收周期大于广播控制信道变更周期的情况下，该收发单元用于发送第一指示信息，该第一指示信息指示寻呼系统消息发生变更，第一指示信息包括变更后的寻呼系统消息所在的时域位置的信息。或者，在非连续接收周期大于广播控制信道变更周期的情况下，收发单元用于发送第一指示信息，该第一指示信息指示寻呼系统消息发生变更，第一指示信息还指示变更后的寻呼系统消息所在的时域位置为所述第一指示信息所在的时域位置的下一个超帧的起始边界或下一个帧号为0的系统帧。该收发单元还用于发送变更后的寻呼系统消息。
基于上述方案，在非连续接收周期大于广播控制信道变更周期的情况下，网络设备可通过第一指示信息指示终端设备接收变更后的与寻呼相关的系统消息，可以避免低能力终端设备频繁接收系统消息，从而节省低能力终端设备的功耗。
在一种可能的实施方式中，当该处理单元确定广播支持寻呼系统消息变更指示时，控制收发单元向终端设备发送第二指示信息，该第二指示信息指示网络设备支持发送该第一指示信息。
系统消息在一种可能的实施方式中，该收发单元具体用于在非连续接收获取周期内的最后一个超帧内发送该第一指示信息，该处理单元具体用于根据该第一指示信息控制该收发单元在该最后一个超帧的下一个帧号为0的系统帧上发送变更后的寻呼系统消息。
在一种可能的实施方式中，该第一指示信息包括变更后的寻呼系统消息所在的时域位置的信息，该收发单元具体用于根据该时域位置发送该变更后的寻呼系统消息。
可选地，该第一指示信息承载于寻呼消息中。
第八方面，提供了一种通信装置。该装置可以是网络设备，或者，也可以是配置于网络设备中的芯片或电路，本申请对此不作限定。该装置包括处理单元和收发单元：在非连续接收周期大于广播控制信道变更周期的情况下，该收发单元用于发送第三指示信息，该第三指示信息为使用该非连续接收周期的系统消息变更指示，该处理单元还用于根据该第三指示信息控制该收发单元在第一广播控制信道变更周期的下一个广播控制信道变更周期的起始边界发送变更后的系统消息，该第三指示信息承载于第一广播控制信道变更周期内。
基于上述方案，当网络设备不支持发送第一指示信息时，终端设备可根据第三指示信息接收变更后的系统消息，在一定程度上也能减少低能力终端设备频繁接收系统消息，从而节省功耗。
第九方面，提供一种通信装置，该装置可以为上述第一方面或第二方面中的终端设备，或者为配置在终端设备中的电子设备，或者为包括终端设备的较大设备。该装置用于执行上述第一方面或第二方面提供的方法。该通信装置包括收发器。
可选地，该装置还包括处理器，该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第一方面，第二方面以及第一方面和第二方面中任一种可能实现方式中的方法。可选地，该装置还包括存储器，该存储器与处理器可能是分离部署的，也可能是集中部署的。可选地，该装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该装置为配置于终端设备中的芯片。当该装置为配置于终端设备中的芯片时，该通信接口可以是该芯片或芯片系统上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。该处理器也可以体现为处理电路或逻辑电路。
可选地，该收发器可以为收发电路。可选地，所述输入/输出接口可以为输入/输出电路。
在具体实现过程中，上述处理器可以为一个或多个芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是但不限于接收器接收并输入的，输出电路所输出的信号可以是但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请实施例对处理器及各种电路的具体实现方式不做限定。
第十方面，提供一种通信装置，该装置可以为上述第三方面或第四方面中的网络设备，或者为配置在网络设备中的电子设备，或者为包括网络设备的较大设备。该装置用于执行上述第三方面或第四方面提供的方法。该装置包括收发器。
可选地，该装置还包括存储器，该处理器与存储器耦合，可用于执行存储器中的指令， 以实现上述第三方面，第四方面以及第三方面和第四方面中任一种可能实现方式中的通信方法。可选地，该通信装置还包括存储器，该存储器与处理器可能是分离部署的，也可能是集中部署的。可选地，该装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该装置为配置于网络设备中的芯片。当该装置为配置于网络设备中的芯片时，该通信接口可以是该芯片或芯片系统上的输入/输出接口、接口电路、输出电路、输入电路、管脚或相关电路等。该处理器也可以体现为处理电路或逻辑电路。
第十一方面，提供了一种计算机程序产品，该计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当该计算机程序被运行时，使得计算机执行上述第一方面至第四方面以及第一方面至第四方面中任一种可能实现方式中的方法。
第十二方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述第一方面至第四方面以及第一方面至第四方面中任一种可能实现方式中的方法。
第十三方面，提供了一种通信系统，包括上述的网络设备和终端设备。
附图说明
图1是适用于本申请实施例的通信系统100的示意图。
图2是本申请提供的通信系统100中的通信网络架构示意图。
图3是本申请提供的一种通信消息在时域上的位置分布图。
图4是本申请提供的一种通信方法的流程示意图。
图5是本申请实施例提供的另一种通信消息在时域上的位置分布图。
图6是本申请实施例提供的再一种通信消息在时域上的位置分布图。
图7是本申请实施例提供的另一种通信方法的流程示意图。
图8是本申请实施例提供的再一种通信方法的流程示意图。
图9是本申请实施例提供的一种终端设备的示意性框图。
图10是本申请实施例提供的一种网络设备的示意性框图。
图11是本申请实施例提供的一种终端设备的结构示意图。
图12是本申请实施例提供的一种网络设备的结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
图1是适用于本申请实施例的通信系统100的示意图。
如图1所示，该通信系统100可以包括一个网络设备，例如，图1所示的宏基站20，小基站21或22。该通信系统100还可以包括至少一个终端设备，例如，图1所示的终端设备10。如图1所示，终端设备10位于宏基站20提供的一个或多个小区(载波)的覆盖范围内，为终端设备10服务的小区可以为一个或多个。当为终端设备10的服务小区有多个时，终端设备10可以按照载波聚合(carrier aggregation，CA)，双连接(dual connectivity，DC)或协作多点传输方式工作。其中，至少有一个小区提供至少一种参数集(numerology)同时为终端设备10提供无线资源。终端设备与网络设备之间、终端设备与终端设备之间 可以建立连接，进行通信，发送设备可以通过控制信息指示数据的调度信息，以便接收设备根据控制信息正确地接收数据。
本申请实施例中的终端设备可以指用户设备、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端可以是手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端、增强现实(augmented reality，AR)终端、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端或者未来演进网络中的终端等。
其中，可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，终端设备还可以是物联网(internet of things，IoT)系统中的终端设备。IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。本申请对于终端设备的具体形式不作限定。
应理解，本申请实施例中，终端设备可以是用于实现终端设备功能的装置，也可以是能够支持终端设备实现该功能的装置，例如芯片系统，该装置可以被安装在终端中。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。
本申请实施例中的网络设备可以是任意一种具有无线收发功能的设备。该设备包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(Radio Network Controller，RNC)、节点B(Node B，NB)、无线网络控制器(radio network controller，RNC)、基站控制器(Base Station Controller，BSC)、基站收发台(Base Transceiver Station，BTS)、家庭基站(例如，Home evolved NodeB，或Home Node B，HNB)、基带单元(Base Band Unit，BBU)，无线保真(Wireless Fidelity，WIFI)系统中的接入点(Access Point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等，还可以为5G，如，NR，系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)等。
在一些部署中网络设备可以包括集中式单元(centralized unit，CU)和DU，或包括 CU节点和DU节点的接入网(radio access network，RAN)设备。例如，在LTE系统中，包括CU节点和DU节点的RAN设备将LTE系统中eNB的协议层拆分开，部分协议层的功能放在CU集中控制，剩下部分或全部协议层的功能分布在DU中，由CU集中控制DU。gNB还可以包括有源天线单元(active antenna unit，简称AAU)。例如，在5G系统中，CU实现gNB的部分功能，DU实现gNB的部分功能。比如，CU负责处理非实时协议和服务，实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能。DU负责处理物理层协议和实时服务，实现无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层和物理(physical，PHY)层的功能。AAU实现部分物理层处理功能、射频处理及有源天线的相关功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令，也可以认为是由DU发送的，或者，由DU+AAU发送的。可以理解的是，网络设备可以为包括CU节点、DU节点、AAU节点中一项或多项的设备。此外，可以将CU划分为RAN中的网络设备，也可以将CU划分为核心网(core network，CN)中的网络设备，本申请对此不做限定。
应理解，本申请实施例中，网络设备可以是用于实现网络设备功能的装置，也可以是能够支持网络设备实现该功能的装置，例如芯片系统，该装置可以被安装在网络设备中。
还应理解，本申请实施例中的网络设备和终端设备可以部署在陆地上，包括室内或室外，手持或车载；或者部署在水面上；或者部署在空中的飞机、气球和卫星上。本申请的实施例对网络设备和终端设备的应用场景不做限定。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通信(global system formobile communications，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、LTE系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、第五代(5th generation，5G)系统或未来演进的通信系统，车到其它设备(vehicle-to-X V2X)，其中V2X可以包括车到互联网(vehicle to network，V2N)、车到车(vehicle to vehicle，V2V)、车到基础设施(vehicle to infrastructure，V2I)、车到行人(vehicle to pedestrian，V2P)等、车间通信长期演进技术(long term evolution-vehicle，LTE-V)、车联网、机器类通信(machine type communication，MTC)、物联网(Internet of things，IoT)、机器间通信长期演进技术(long term evolution-machine，LTE-M)，机器到机器(machine to machine，M2M)，设备到设备(device to device，D2D)等。
应理解，本申请可应用于独立部署的5G或LTE系统，也可应用于非独立部署的5G或LTE系统，例如DC场景，包括双连接(E-UTRA-NR dual connectivity，EN-DC)等，以及载波聚合(carrier aggregation，CA)场景。
图2(a)示出了本申请提供的通信系统100中的一种通信网络架构，后续提供的实施例均可适用于该架构。第一网络设备是终端设备(后续以UE为例进行说明)的源网络设备(或称为，工作网络设备，或服务网络设备)，第二网络设备为UE的目标网络设备(或 称为，备用网络设备)，即切换后为UE提供服务的网络设备。需要说明的是，本申请中，“故障”可以理解为网络设备出现故障，和/或因其他原因不能再为某个或多个UE提供服务，简称为故障。本申请中所述的“切换”，是指为UE提供服务的网络设备发生切换，并不限于“小区切换”。为方便描述，以网络设备为基站为例进行描述。所述“切换”可以指，由于为UE提供服务的基站发生变化而造成的切换。例如，当UE的源基站发生故障时，由备用基站为UE提供服务。又例如，UE从源基站切换到与另一个基站通信的过程中，由切换后的目标基站为UE提供服务。UE切换前与切换后的接入的小区可以变化，也可以不变。可以理解的是，所述备用网络设备是相对的概念，例如，相对于一个UE，基站2是基站1的备用网络设备，而相对于另一个UE，基站1是基站2的备用网络设备。
所述第一网络设备和所述第二网络设备可以是两个不同的设备，例如，第一网络设备和第二网络设备是两个不同的基站。可选的，所述第一网络设备和第二网络设备也可以是同一个设备中的两套功能模块。所述功能模块可以是硬件模块，或软件模块，或者硬件模块与软件模块。例如，所述第一网络设备和所述第二网络设备位于同一个基站中，是该基站中的两个不同的功能模块。一种实现方式中，所述第一网络设备和所述第二网络设备对于UE来说不是透明的。UE在与相应的网络设备交互时，能够知道究竟是在与哪个网络设备交互。另一种实现方式中，所述第一网络设备和所述第二网络设备对于UE来说是透明的。UE能够与网络设备通信，但并不知道是在与这两个网络设备中的哪个网络设备交互。或者说，对于UE来说，可能认为只有一个网络设备。所述第一网络设备和所述第二网络设备对于UE来说可以不是透明的，也可以是透明的。在后续描述中，第一网络设备、第二网络设备、以及终端设备(以UE为例)可以分别为图2中的(a)中所示网络架构中的第一网络设备，第二网络设备以及UE在本申请的各个实施例所对应的附图中，用虚线表示的步骤，是可选的步骤，在后文中不多赘述。
图2(b)示出了本申请提供的通信系统100中的另一种通信网络架构。如图2(b)所示，通信系统包括CN和RAN。其中RAN中的网络设备(例如，基站)包括基带装置和射频装置。基带装置可以由一个或多个节点实现，射频装置可以从基带装置拉远独立实现，也可以集成基带装置中，或者部分拉远部分集成在基带装置中。RAN中的网络设备可以包括集中单元(CU)和分布单元(DU)，多个DU可以由一个CU集中控制。CU和DU可以根据其具备的无线网络的协议层功能进行划分，例如PDCP层及以上协议层的功能设置在CU，PDCP以下的协议层，例如RLC层和MAC层等的功能设置在DU。需要说明的是，这种协议层的划分仅仅是一种举例，还可以在其它协议层划分。射频装置可以拉远，不放在DU中，也可以集成在DU中，或者部分拉远部分集成在DU中，本申请不作任何限制。
图2(c)示出了本申请提供的通信系统100中的另一种通信网络架构。相对于图2(b)所示的架构，还可以将CU的控制面(CP)和用户面(UP)分离，分成不同实体来实现，分别为控制面CU实体(CU-CP实体)和用户面CU实体(CU-UP实体)。在该网络架构中，CU产生的信令可以通过DU发送给UE，或者UE产生的信令可以通过DU发送给CU。DU可以不对该信令进行解析而直接通过协议层封装而透传给UE或CU。在该网络架构中，将CU划分为作为RAN侧的网络设备，此外，也可以将CU划分作为CN侧的网络设备，本申请对此不做限制。
在本申请实施例中，第一终端设备与第二终端设备之间的区别可能包括如下至少一项：
1、带宽能力不同。例如，第一终端设备的载波带宽不大于50MHz，例如为50MHz、40MHz、20MHz、15MHz、10MHz或者5MHz中的至少一种，第二终端设备的载波带宽大于50MHz。
2、收发天线数不同。例如，第一终端设备可以支持2收1发(2个接收天线和1个发送天线)，或者1收1发(1个接收天线和1个发送天线)。第二终端设备可以支持4收2发(4个接收天线和2个发送天线)。可以理解的是，在实现相同的数据传输速率的条件下，由于第一终端设备的收发天线个数少于第二终端设备的收发天线个数，因此第一终端设备与基站之间的数据传输所能实现的最大覆盖范围小于第二终端设备与基站之间的数据传输所能实现的最大覆盖范围。
3、上行最大发射功率不同。例如，第一终端设备的上行最大发射功率可以为4分贝毫瓦(dBm)～20dBm中的一个值。第二终端设备的上行最大发射功率可以为23dBm或者26dBm。
4、协议版本不同。第一终端设备可以是NR版本17(release-17，Rel-17)或者NR Rel-17以后版本中的终端设备。第二终端设备例如可以是NR版本15(release-15，Rel-15)或NR版本16(release-16，Rel-16)中的终端设备。第二终端设备也可以称为NR传统(NR legacy)终端设备。
5、载波聚合能力不同。例如，第一终端设备不支持载波聚合，第二终端设备可以支持载波聚合。又例如，第一终端设备和第二终端设备都可以支持载波聚合，但是第一终端设备同时支持的载波聚合的最大个数小于第二终端设备同时支持的载波聚合的最大个数，例如第一终端设备最多同时支持2个载波的聚合，第二终端设备可以最多同时支持5个载波或者32个载波的聚合。
6、双工能力不同。例如，第一终端设备支持半双工频分双工(frequency division duplexing，FDD)。第二终端设备支持全双工FDD。
7、数据的处理时间能力不同。例如，第一终端设备接收下行数据与发送对该下行数据的反馈之间的最小时延大于第二终端设备接收下行数据与发送对该下行数据的反馈之间的最小时延；和/或，第一终端设备发送上行数据与接收对该上行数据的反馈之间的最小时延大于第二终端设备发送上行数据与接收对该上行数据的反馈之间的最小时延。
8、处理能力(ability/capability)不同。例如，第一终端设备的基带处理能力低于第二终端设备的基带处理能力。其中，基带处理能力可以包括以下至少一项：终端设备进行数据传输时支持的最大MIMO层数，终端设备支持的HARQ进程数目，终端设备支持的最大传输块大小(transmission block size，TBS)。
9、上行和/或下行的传输峰值速率不同。传输峰值速率是指终端设备在单位时间内(例如每秒)能够达到的最大数据传输速率。第一终端设备支持的上行峰值速率可以低于第二终端设备支持的上行峰值速率，和/或第一终端设备支持的下行峰值速率可以低于第二终端设备支持的下行峰值速率。例如，第一终端设备的上行峰值速率小于或等于50Mbps，下行峰值速率小于或等于150Mbps，第二终端设备的上行峰值速率大于或等于50Mbps，下行峰值速率大于或等于150Mbps。又例如，第一终端设备的上行峰值速率或下行为百Mbps量级，第二终端设备的上行峰值速率或下行峰值速率为Gbps量级。
10、缓存(buffer)大小不同。缓存buffer可以理解为层2(Layer 2，L2)缓存总大小，其定义为终端设备对于所有无线承载，在无线链接控制(radio link control，RLC)发送窗和接收以及重排序窗中缓存的字节数与在数据包汇聚协议(packet data convergence protocol，PDCP)重排序窗中缓存的字节数之和。或者，缓存buffer也可以理解为混合自动重传请求(hybrid automatic repeat request，HARQ)处理所能使用的软信道比特总数。可选的，在本申请实施例中，第一终端设备可以是NR系统中的REDCAP终端设备，或者，第一终端设备还可以称为低能力终端设备、降低能力终端设备、REDCAP UE、Reduced Capacity UE、mMTC UE等。NR系统中还可以包括其他终端设备，例如第二终端设备，第二终端设备可以是传统能力或/正常能力/高能力的终端设备，也可以称为传统终端设备或者Legacy UE，第二终端设备与第一终端设备具有上述区别特征。
当然，以上只是示例，REDCAP终端设备与传统终端设备之间还可能存在其他区别，在此不再逐一举例说明。
DRX周期：在本申请实施例中为非连续接收周期，用于终端设备在RRC连接态时非连续接收PDCCH，或者用于终端设备在空闲态接收寻呼消息。
eDRX周期：在本申请实施例中为扩展非连续接收周期，比普通的DRX周期长。
BCCH MP：在本申请实施例中为广播信道的变更周期。在该周期内系统消息不会发生变化，MP可以被配置为DRX周期的N倍，其中，N为大于或等于1的整数。MP也可以被配置为小于DRX周期。
对于第二终端设备而言，当系统消息发生变化时，系统消息变更通知方式分为以下两种：
方式1
当DRX周期小于或等于BCCH MP时，网络设备向终端设备发送寻呼消息，该寻呼消息中包括系统消息变化指示。对应的，终端设备接收到该系统消息变化指示后，在第一MP与下一个MP边界点接收变更后的系统消息。应理解，终端设备在第一MP内接收到该系统消息变化指示。
方式2
当DRX周期大于BCCH MP时，此时的DRX周期可以认为是eDRX周期。网络设备向终端设备发送寻呼消息，该寻呼消息中包括使用eDRX周期的系统消息变更指示(使用eDRX周期，即终端设备可根据eDRX周期确定时域位置，以接收变更后的系统消息)。对应的，终端设备接收到该系统消息变更指示后，在eDRX获取周期边界获取变更的系统消息。如图3所示，DRX周期大于BCCH MP，DRX周期的长度包括多个BCCH MP的长度。图中的小方块为一个超帧，M-eDRX为eDRX获取周期，通常，M-eDRX长度至少为m个超帧(hyper system frame number，H-SFN)，m为大于或等于1的整数，图中所示，m＝256。1个超帧等于1024个系统帧(system frame number，SFN)。在图3中，在第n个MP的起始边界的超帧内接收包括使用eDRX周期的系统消息变更指示的寻呼消息，在eDRX获取周期的边界接收系统消息。
可选地，终端设备在M-DRX的边界获取的系统消息，可以认为与寻呼相关，在M-DRX周期内发生变化的系统消息，可以认为与寻呼不相关。
上述方案可以在为终端设备配置较长的DRX周期的情况下，使得终端设备可以被网 络设备或者基站寻呼到或者找到。为避免在这个较长周期(M-eDRX周期)内其他系统消息(与寻呼不相关)发生变化带来的影响，后续终端设备在发起与网络侧连接时，会再次接收变更的系统消息。
对于第一终端设备而言，存在配置的DRX周期最大不超过10.24秒的情况。当该第一终端设备的DRX周期大于BCCH MP，且该第一终端设备不支持H-SFN时，系统消息发生变化，则第一终端设备很难准确寻找到读取或者接收变更后的系统消息的边界。
图4是本申请实施例提供的一种通信方法的流程示意图。图4所示的方法200包括：
步骤S230：在非连续接收周期大于广播控制信道变更周期的情况下，网络设备向终端设备发送第一指示信息，该第一指示信息指示寻呼系统消息发生变更。对应的，终端设备接收该第一指示信息。
可选地，在步骤S230之前，方法200包括步骤S210：终端设备或网络设备确定DRX周期大于BCCH MP。
应理解，寻呼系统消息为包括寻呼配置的系统消息。
可选地，第一指示信息可以承载于寻呼消息中，或者第一指示信息也可以承载于调度寻呼消息的下行控制信息(downlink control information,DCI)中。
在一种可能的实施方式中，第一指示信息还指示变更后的寻呼系统消息所在的时域位置。
示例地，该变更后的寻呼系统消息所在的时域位置为该第一指示信息所在的时域位置的下一个超帧的起始边界或下一个帧号为0的系统帧。
可选地，网络设备在DRX获取周期内发送第一指示信息，对应的，终端设备在DRX获取周期内接收该第一指示信息。
可选地，该第一指示信息承载于DRX获取周期内的最后一个超帧内。
示例地，终端设备在空闲态或者非激活状态(inactive)监听寻呼消息(Paging)，如图5所示，DRX周期大于BCCH MP，DRX周期的长度包括多个BCCH MP的长度。图中的小方块为一个超帧，M-eDRX为eDRX获取周期，通常，M-eDRX长度至少为m个超帧，m为大于或等于1的整数，图中所示，m＝256。终端设备在第n个MP的起始边界的超帧内接收包括使用eDRX周期的系统消息变更指示的寻呼消息。终端设备在DRX获取周期内的最后一个超帧上接收寻呼消息，该寻呼消息中包括第一指示信息，例如Paging中包括寻呼系统消息变更信元(PagingSIModification)。
例如，DRX获取周期长度为256个超帧。MCCH MP长度为5个系统帧(一个系统帧长度为10毫秒)，终端设备被配置的DRX或者eDRX周期为10个系统帧。当寻呼相关系统消息要发生变化时，网络设备可以在第256个超帧内的寻呼机会中向终端设备发送第一指示信息，对于上述不支持HSFN的终端设备或者只对寻呼相关系统消息变更感兴趣的终端设备可以在第256个超帧的结尾，第257个超帧的开始进行接收更新的系统消息；对于不支持HSFN的终端设备可以通过第一指示信息，在下一个系统帧号为0的时域位置开始接收更新的系统消息。即本方案既可适用于不支持HSFN的终端设备，也可适用于只对寻呼相关系统消息感兴趣的终端设备。
另一种可能实施的方式，该第一指示信息承载于DRX获取周期内的其中一个超帧内，且该第一指示信息包括变更后的寻呼系统消息所在的时域位置的信息。
示例地，终端设备在空闲态或者非激活状态(inactive)监听寻呼消息(Paging)，如图6所示，DRX周期大于BCCH MP，DRX周期的长度包括多个BCCH MP的长度。图中的小方块为一个超帧，M-eDRX为eDRX获取周期，通常，M-eDRX长度至少为m个超帧，m为大于或等于1的整数，图中所示，m＝256。终端设备在第n个MP的起始边界的超帧内接收包括使用DRX周期的系统消息变更指示的寻呼消息。终端设备在DRX获取周期内的其中一个超帧内(不在DRX获取周期的边界)接收寻呼消息，该寻呼消息包括第一指示信息，该第一指示信息包括时域位置的信息，例如帧号，子帧号，或者第N个帧号为n的系统帧，其中N≥1，n≥0。
例如，DRX获取周期长度为256个超帧。MCCH MP长度为5个系统帧，终端设备被配置的DRX或者eDRX周期为10个系统帧。当寻呼相关系统消息要发生变化时，网络设备可以在第200个超帧内的寻呼机会中向终端设备发送第一指示信息，并且第一指示信息指示终端设备在第200个超帧后的第一个帧号为1的系统帧上进行接收更新的系统消息；对于不支持HSFN的终端设备可以通过第一指示信息指示的具体时域位置开始接收更新的系统消息。同样地，本方案既可适用于不支持HSFN的终端设备，也可适用于只对寻呼相关系统消息感兴趣的终端设备。
在上述方案中，低能力终端设备可直接根据第一指示信息所指示的时域位置接收变更后的寻呼系统消息，相较于根据下一个超帧的起始边界或下一个帧号为0的系统帧接收变更后的寻呼系统消息的方案更加灵活。
可选地，在步骤S230之前，方法200还可以包括步骤S220，判断网络设备广播是否支持寻呼系统消息变更指示。
一种可能的实施方式，若确定网络设备广播支持寻呼系统消息变更指示，则向终端设备发送第二指示信息，即步骤S221。对应的，终端设备接收该第二指示信息，该第二指示信息指示该网络设备支持发送该第一指示信息。
示例地，第二指示信息承载于系统消息中，如系统信息块(system information blocks，SIB)消息：SIB1，SIB2等。
若终端设备没有收到第二指示信息，则终端设备可以基于网络设备配置的默认寻呼周期，或者RAN寻呼周期中较小的周期，按照DRX周期小于MCCH MP的方式，尝试在所有或者部分系统消息变更的边界接收变化的系统消息。
步骤S240：网络设备发送变更后的寻呼系统消息，对应的，终端设备根据第一指示信息接收变更后的寻呼系统消息。
可选地，终端设备根据第一指示信息所在的时域位置接收变更后的寻呼系统消息。即第一指示信息隐式指示变更后的寻呼系统消息所在的时域位置。
一种可能实施的方式，若该第一指示信息承载于DRX获取周期内的最后一个超帧内，则与寻呼相关的系统消息于该最后一个超帧的下一个超帧的起始边界或下一个帧号为0的系统帧发生更新。
应理解，支持超帧的终端设备可根据最后一个超帧的下一个超帧的起始边界接收变更后的寻呼系统消息，不支持超帧的终端设备可根据最后一个超帧的下一个帧号为0的系统帧接收变更后的寻呼系统消息。
示例地，当DRX获取周期长度为256个超帧，终端设备被配置的DRX或者eDRX 周期为10个系统帧。第一指示信息承载于第256个超帧内的寻呼机会中，终端设备可以在第256个超帧的结尾，第257个超帧的开始进行接收更新的系统消息。对于不支持HSFN的终端设备可以在第256个超帧后的下一个系统帧号为0的时域位置接收更新的系统消息。
应理解，此方案中，网络设备在DRX获取周期的最后一个超帧前的寻呼机会中不发送该第一指示信息，从而节省功耗。对于不支持超帧的终端设备，在DRX获取周期最后一个超帧之前发送第一指示信息也无法获得准确的寻呼系统消息变更边界。
还应理解，对于第一终端设备，因不支持超帧，无法确定超帧的边界，所以确定在收到指示信息后的下一个系统帧号(SFN)为0的系统帧上开始接收变更的系统消息，该系统消息包括与寻呼配置相关的系统消息。
而对于第二终端设备，可以确定在DRX获取周期内的最后一个超帧的下一个超帧的起始边界接收变更的系统消息，具体的包括与寻呼配置相关的系统消息。
应理解，寻呼系统消息变更的边界与DRX获取周期边界复用，可以使得支持超帧的终端设备和不支持超帧的终端设备，可以在统一时间点获取变更的系统消息，故而网络设备不需要针对不同能力的终端设备发送两次更新的系统消息，节省了信令开销。
另一种可能实施的方式，若该第一指示信息承载于DRX获取周期内的其中一个超帧上，且该第一指示信息还指示变更后的寻呼系统消息所在的时域位置。则可以根据该第一指示信息指示的时域位置，获取变更的包括寻呼相关的系统消息。示例地，寻呼系统消息承载于第一指示信息所指示的帧号，子帧号，或者第N个帧号为n的系统帧上，其中N≥1，n≥0。
例如，DRX获取周期长度为256个超帧，终端设备被配置为DRX或者eDRX周期为10个系统帧。第一指示信息承载于第200个超帧内的寻呼机会中，并且第一指示信息指示终端设备在第200个超帧后的第一个帧号为1的系统帧上进行接收更新的系统消息。对于不支持HSFN的终端设备可以通过第一指示信息指示的具体时域位置，即第200个超帧后的第一个帧号为1的系统帧开始接收更新的系统消息。
示例地，寻呼系统消息可以是主信息块(master information block，MIB)消息和/或SIB消息。
可选地，在步骤S240后，当终端设备获取变更的系统消息时：
一种可能实施的方式，终端设备需要先检查下变更后的系统消息的第一值标签(Valuetag)，若第一值标签与第二值标签不一致，则终端设备接收变更后的系统消息，第二值标签为第二终端设备保存在本地的值标签。
应理解，该变更后的系统消息可以是终端设备发起网络连接时接收的，可以是与寻呼不相关的系统消息，上述方案能减少终端设备接收系统消息的次数，从而节省功耗。
另一种可能实施的方式，终端设备直接接收变更后的系统消息，例如接收全部需要的系统消息。
具体的，终端设备接收收到第一指示信息后，在相应的时域位置开始接收变更的系统消息，这里变更的系统消息可以只是变更的与寻呼配置相关的系统消息，也可以是所有的变更的系统消息，所有的变更的系统消息中包括变更的与寻呼相关的系统消息。
应理解，方法200是终端设备接收到第一指示信息的一种通信方法。若终端设备没有接收到第一指示信息，则可通过方法300通信，下面介绍方法300。
图7是本申请实施例提供的另一种通信方法的流程示意图。图7所示的方法300包括：
可选地，步骤S310，网络设备或终端设备确定DRX周期大于BCCH MP。
步骤S320，网络设备向终端设备发送第三指示信息，该第三指示信息指示寻呼系统消息发生变更。对应的，终端设备接收该第三指示信息。
示例地，第三指示信息可以为使用DRX周期的系统消息变更指示，可以承载于寻呼消息中，第三指示信息可以为Paging中的关于DRX的系统消息变更信元(SystemInfoModification-eDRX)。或者，第三指示信息可以为用于DRX周期小于BCCH MP的系统消息变更指示(例如，SystemInfoModification)。
步骤S330，网络设备在第一MP的下一个MP的起始边界向终端设备发送变更后的系统消息，该第三指示信息承载于第一MP内。对应的，终端设备在第一MP的下一个MP的起始边界接收该变更后的系统消息。
例如，MCCH MP长度为5个系统帧，终端设备被配置为DRX或者eDRX周期为10个系统帧。当寻呼相关系统消息要发生变化时，假设网络设备在第一MP，即帧号为0-4的系统帧内向终端设备发送第三指示信息，终端设备在下一个MP的起始边界，即帧号为5的系统帧上开始接收更新的系统消息。
应理解，上述方法200和300应用的场景为DRX周期大于BCCH MP时，若DRX周期小于或等于BCCH MP时，网络设备和终端设备可通过方法400通信，下面介绍方法400。
图8是本申请实施例提供的再一种通信方法的流程示意图。图8所示的方法400包括：
可选地，步骤S410，终端设备或网络设备确定DRX周期小于或等于BCCH MP。
步骤S420，网络设备向终端设备发送第四指示信息，该第四指示信息指示寻呼系统消息发生变更。对应的，终端设备接收该第四指示信息。
示例地，第四指示信息可以为系统消息变更指示，可以承载于寻呼消息中，第四指示信息可以为Paging中的系统消息变更信元(SystemInfoModification)。
步骤S430，网络设备在第一MP的下一个MP的起始边界向终端设备发送变更后的系统消息，该第四指示信息承载于第一MP内。对应的，终端设备在第一MP的下一个MP的起始边界接收该变更后的系统消息。
例如，MCCH MP长度为5个系统帧，终端设备被配置为DRX或者eDRX周期为10个系统帧。当寻呼相关系统消息要发生变化时，假设网络设备在第一MP，即帧号为0-4的系统帧上向终端设备发送第四指示信息，终端设备在下一个MP的起始边界，即帧号为5的系统帧上进行开始接收更新的系统消息。
应理解，上文中提到的DRX获取周期也可以为eDRX获取周期，本申请对此不做任何限制。
需注意的是，图4，图7和图8中示意的执行主体仅为示例，该执行主体也可以是支持该执行主体实现方法200，300和400的芯片、芯片系统、或处理器，本申请对此不作限制。
上文结合附图描述了本申请实施例的方法实施例，下面描述本申请实施例的装置实施例。可以理解，方法实施例的描述与装置实施例的描述可以相互对应，因此，未描述的部分可以参见前面方法实施例。
可以理解的是，上述各个方法实施例中，由网络设备实现的方法和操作，也可以由可 用于网络设备的部件(例如芯片或者电路)实现，由终端设备实现的方法和操作，也可以由可用于终端设备的部件(例如芯片或者电路)实现。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，各个网元，例如发射端设备或者接收端设备，为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对发射端设备或者接收端设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。下面以采用对应各个功能划分各个功能模块为例进行说明。
图9是本申请实施例提供的一种通信装置的示意性框图。该通信装置500包括收发单元510和处理单元520。收发单元510可以与外部进行通信，处理单元520用于进行数据处理。收发单元510还可以称为通信接口或通信单元。
该通信装置500可以为终端设备，其中，收发单元510用于执行上文方法实施例中终端设备的接收或发送的操作，处理单元520用于执行上文方法实施例中终端设备内部处理的操作。
在一种设计中，在非连续接收周期大于广播控制信道变更周期的情况下，该收发单元510用于接收第一指示信息，该第一指示信息指示寻呼系统消息发生变更，该第一指示信息包括变更后的寻呼系统消息所在的时域位置的信息。或者，在非连续接收周期大于广播控制信道变更周期的情况下，该收发单元510用于接收第一指示信息，该第一指示信息指示寻呼系统消息发生变更，该第一指示信息还指示变更后的寻呼系统消息所在的时域位置为该第一指示信息所在的时域位置的下一个超帧的起始边界或下一个帧号为0的系统帧。该处理单元520用于根据该第一指示信息控制该收发单元510接收变更后的寻呼系统消息。
在一种可能的实施方式中，该收发单元510还用于接收第二指示信息，该第二指示信息指示网络设备支持发送第一指示信息。
收发单元510根据第一指示信息所在的时域位置接收变更后的寻呼系统消息。
在一种可能的实施方式中，该收发单元510具体用于在非连续接收获取周期内的最后一个超帧内接收该第一指示信息。该处理单元520具体用于根据该第一指示信息控制该收发单元510在该最后一个超帧的下一个帧号为0的系统帧上接收变更后的寻呼系统消息。
在一种可能的实施方式中，该第一指示信息包括变更后的寻呼系统消息所在的时域位置的信息，该收发单元510具体用于根据该时域位置接收该变更后的寻呼系统消息。
在一种可能的实施方式中，该处理单元520具体用于确定变更后的系统消息中的第一值标签与本地值标签不同，该收发单元510接收变更后的系统消息。
可选地，该第一指示信息承载于寻呼消息中。
在另一种设计中，当非连续接收周期大于广播控制信道变更周期的情况下，该收发单元510用于接收第三指示信息，该第三指示信息为使用该非连续接收周期的系统消息变更指示。该处理单元520还用于根据该第三指示信息控制该收发单元510在第一广播控制信道变更周期的下一个广播控制信道变更周期的起始边界接收变更后的系统消息，该第三指示信息承载于第一广播控制信道变更周期内。
可选地，该通信装置500还可以包括存储单元，该存储单元可以用于存储指令或者和/或数据，处理单元520可以读取存储单元中的指令或者和/或数据。
还应理解，该终端设备中的收发单元510可对应于图11中示出的终端设备中的收发器710，该终端设备中的处理单元520可对应于图11中示出的终端设备中的处理器720。
还应理解，该终端设备中的收发单元510可通过通信接口(如收发器或输入/输出接口)实现，例如可对应于图11中示出的终端设备中的天线和控制电路，该终端设备中的处理单元520可通过至少一个处理器实现，例如可对应于图11中示出的终端设备中的处理器，该终端设备中的处理单元520还可以通过至少一个逻辑电路实现。
可选地，终端设备还可以包括存储单元，该存储单元可以用于存储指令或者数据，处理单元可以调用该存储单元中存储的指令或者数据，以实现相应的操作。
图10是本申请实施例提供的另一种通信装置的示意性框图。该通信装置600包括收发单元610和处理单元620。收发单元610可以与外部进行通信，处理单元620用于进行数据处理。收发单元610还可以称为通信接口或通信单元。
该通信装置600可以为网络设备，其中，收发单元610用于执行上文方法实施例中网络设备的接收或发送的操作，处理单元620用于执行上文方法实施例中网络设备内部处理的操作。
可选地，该通信装置600还可以包括存储单元，该存储单元可以用于存储指令或者和/或数据，处理单元620可以读取存储单元中的指令或者和/或数据。
在一种设计中，在非连续接收周期大于广播控制信道变更周期的情况下，该收发单元610用于发送第一指示信息，该第一指示信息指示寻呼系统消息发生变更，第一指示信息包括变更后的寻呼系统消息所在的时域位置的信息。或者，在非连续接收周期大于广播控制信道变更周期的情况下，收发单元610用于发送第一指示信息，该第一指示信息指示寻呼系统消息发生变更，第一指示信息还指示变更后的寻呼系统消息所在的时域位置为所述第一指示信息所在的时域位置的下一个超帧的起始边界或下一个帧号为0的系统帧。该收发单元610还用于发送变更后的寻呼系统消息。
在一种可能的实施方式中，当该处理单元620确定广播支持寻呼系统消息变更指示时，收发单元610向终端设备发送第二指示信息，该第二指示信息指示网络设备支持发送该第一指示信息。
在一种可能的实施方式中，该收发单元610具体用于在非连续接收获取周期内的最后一个超帧内发送该第一指示信息。该收发单元610还具体用于在该最后一个超帧的下一个帧号为0的系统帧上发送变更后的寻呼系统消息。
在一种可能的实施方式中，该第一指示信息包括变更后的寻呼系统消息所在的时域位置，该收发单元610具体用于根据该时域位置发送该变更后的寻呼系统消息。
可选地，该第一指示信息承载于寻呼消息中。
在另一种设计中，在非连续接收周期大于广播控制信道变更周期的情况下，该收发单元610用于发送第三指示信息，该第三指示信息为使用该非连续接收周期的系统消息变更指示，该处理单元620用于根据该第三指示信息控制该收发单元610在第一广播控制信道变更周期的下一个广播控制信道变更周期的起始边界发送变更后的系统消息，该第三指示信息承载于第一广播控制信道变更周期内。
可选地，网络设备还可以包括存储单元，该存储单元可以用于存储指令或者数据，处理单元可以调用该存储单元中存储的指令或者数据，以实现相应的操作。
还应理解，该网络设备中的收发单元610为可通过通信接口(如收发器或输入/输出接口)实现，该网络设备中的处理单元620可通过至少一个处理器实现，例如可对应于图12中示出的网络设备中的处理单元，该网络设备中的处理单元620可通过至少一个逻辑电路实现。
图11给出了本申请实施例提供的一种终端设备的结构示意图。
该终端设备700可适用于图1，图2(a)，2(b)，或2(c)所示的系统中。为了便于说明，图11仅示出了终端设备700的主要部件。如图11所示，终端设备700包括处理器、存储器、控制电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对整个终端设备700进行控制，执行软件程序，处理软件程序的数据。存储器主要用于存储软件程序和数据。控制电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏，显示屏，麦克风，键盘等主要用于接收用户输入的数据以及对用户输出数据。
以终端设备700为手机为例，当终端设备700开机后，处理器可以读取存储单元中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至控制电路，控制电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备700时，控制电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。
本领域技术人员可以理解，为了便于说明，图11仅示出了一个存储器和处理器。在一些实施例中，终端设备700可以包括多个处理器和存储器。存储器也可以称为存储介质或者存储设备等，本发明实施例对此不做限制。
作为一种可选的实现方式，处理器可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及通信数据进行处理，中央处理器主要用于对整个终端设备700进行控制，执行软件程序，处理软件程序的数据。图11中的处理器集成了基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。终端设备700可以包括多个基带处理器以适应不同的网络制式，终端设备700可以包括多个中央处理器以增强其处理能力，终端设备700的各个部件可以通过各种总线连接。所述基带处理器也可以表述为基带处理电路或者基带处理芯片。所述中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储单元中，由处理器执行软件程序以实现基带处理功能。
在一个例子中，可以将具有收发功能的天线和控制电路视为终端设备700的收发单元 710，将具有处理功能的处理器视为终端设备700的处理单元720。如图11所示，终端设备700包括收发单元710和处理单元720。收发单元也可以称为收发器、收发机、收发装置等。可选的，可以将收发单元710中用于实现接收功能的器件视为接收单元，将收发单元710中用于实现发送功能的器件视为发送单元，即收发单元710包括接收单元和发送单元。示例性的，接收单元也可以称为接收机、接收器、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。
本申请实施例还提供了一种网络设备，该网络设备可用于前述各个实施例中。所述网络设备包括用以实现图2(a)，2(b)，或2(c)，图4，图7，和/或图8所示的实施例中所述的网络设备或网络设备的功能的手段(means)、单元和/或电路。例如，网络设备包括收发模块，用以支持终端设备实现收发功能，和，处理模块，用以支持网络设备对信号进行处理。
图12给出了本申请实施例提供的一种网络设备的结构示意图。如图12所示，网络设备20可适用于图1，图2(a)，2(b)，或2(c)所示的系统中。网络设备20例如为图1所示的网络设备20。网络设备20可以相对于某个或某些UE而言，可以作为第一网络设备具备其相应的功能，也可以相对于某个或某些UE而言，可以作为第二网络设备具备其相应的功能。该网络设备包括：基带装置201，射频装置202、天线203。在上行方向上，射频装置202通过天线203接收终端设备发送的信息，将终端设备发送的信息发送给基带装置201进行处理。在下行方向上，基带装置201对终端设备的信息进行处理，并发送给射频装置202，射频装置202对终端设备的信息进行处理后经过天线203发送给终端设备。
基带装置201包括一个或多个处理单元2011，存储单元2012和接口2013。其中处理单元2011用于支持网络设备执行上述方法实施例中网络设备的功能。存储单元2012用于存储软件程序和/或数据。接口2013用于与射频装置202交互信息，该接口包括接口电路，用于信息的输入和输出。在一种实现中，所述处理单元为集成电路，例如一个或多个ASIC，或，一个或多个DSP，或，一个或者多个FPGA，或者这些类集成电路的组合。这些集成电路可以集成在一起，构成芯片。存储单元2012与处理单元2011可以位于同一个芯片中，即片内存储元件。或者存储单元2012与处理单元2011也可以为与处理元件2011处于不同芯片上，即片外存储元件。所述存储单元2012可以是一个存储器，也可以是多个存储器或存储元件的统称。
网络设备可以通过一个或多个处理单元调度程序的形式实现上述方法实施例中的部分或全部步骤。例如实现图2(a)，图4，图7，和/或图8中网络设备的相应的功能。所述一个或多个处理单元可以支持同一种制式的无线接入技术，也可以支持不同种制式的无线接入制式。
本申请实施例还提供一种计算机可读存储介质，其上存储有用于实现上述方法实施例中由终端设备或网络设备执行的方法的计算机指令。
例如，该计算机程序被计算机执行时，使得该计算机可以实现上述方法实施例中由终端设备或网络设备执行的方法。
本申请实施例还提供一种包含指令的计算机程序产品，该指令被计算机执行时使得该计算机实现上述方法实施例中由终端设备或网络设备执行的方法。
本申请实施例还提供一种通信系统，该通信系统包括上述实施例中的网络设备和终端 设备。
上述提供的任一种装置中相关内容的解释及有益效果均可参考上文提供的对应的方法实施例，此处不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的计算机可读存储介质，可以是计算机能够存取的任何可用介质。以此为例但不限于：计算机可读介质可以包括随机存取存储器(random access memory，RAM)、只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦可编程只读存储器(electrically erasable programmable read only memory，EEPROM)、紧凑型光盘只读存储器(compact disc read-only memory，CD-ROM)、通用串行总线闪存盘(universal serial bus flash disk)、移动硬盘、或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。另外，通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)或直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
以上所述，仅为本申请的具体实施方式，但本申请实施例的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请实施例揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请实施例的保护范围之内。因此，本申请实施例的保护范围应所述以权利要求的保护范围为准。

Claims (14)

  1. 一种通信方法，其特征在于，包括：
    在非连续接收周期大于广播控制信道变更周期的情况下，终端设备接收第一指示信息，所述第一指示信息指示寻呼系统消息发生变更，
    所述第一指示信息包括变更后的寻呼系统消息所在的时域位置的信息，或，所述第一指示信息指示变更后的寻呼系统消息所在的时域位置为所述第一指示信息所在的时域位置的下一个超帧的起始边界或下一个帧号为0的系统帧；
    所述终端设备根据所述第一指示信息接收所述变更后的寻呼系统消息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一指示信息所在的时域位置为非连续接收获取周期内的最后一个超帧。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    在变更后的系统消息中的第一值标签与本地值标签不同的情况下，所述终端设备接收变更后的系统消息。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收第二指示信息，所述第二指示信息指示网络设备支持发送所述第一指示信息。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，所述第一指示信息承载于寻呼消息中。
  6. 一种通信方法，其特征在于，包括：
    在非连续接收周期大于广播控制信道变更周期的情况下，网络设备发送第一指示信息，所述第一指示信息指示寻呼系统消息发生变更，
    所述第一指示信息包括变更后的寻呼系统消息所在的时域位置的信息，或，所述第一指示信息还指示变更后的寻呼系统消息所在的时域位置为所述第一指示信息所在的时域位置的下一个超帧的起始边界或下一个帧号为0的系统帧；
    所述网络设备发送变更后的寻呼系统消息。
  7. 根据权利要求6所述的方法，其特征在于，所述第一指示信息所在的时域位置为非连续接收获取周期内的最后一个超帧。
  8. 根据权利要求6或7所述的方法，其特征在于，所述方法还包括：
    所述网络设备发送第二指示信息，所述第二指示信息指示所述网络设备支持发送所述第一指示信息。
  9. 根据权利要求6至8中任一项所述的方法，其特征在于，所述第一指示信息承载于寻呼消息中。
  10. 一种通信装置，其特征在于，包括：
    用于实现权利要求1至5中任意一项所述的方法的单元；或者
    用于实现权利要求6至9中任意一项所述的方法的单元。
  11. 一种通信装置，其特征在于，所述装置包括处理器，所述处理器与存储器耦合，所述存储器存储有指令，所述指令被所述处理器运行时，
    使得所述处理器执行如权利要求1至5中任意一项所述的方法，或者
    使得所述处理器执行如权利要求6至9中任意一项所述的方法。
  12. 一种通信系统，其特征在于，所述通信系统包括网络设备和终端设备，所述终端设备用于执行如权利要求1至5中任意一项所述的方法，所述网络设备用于执行如权利要求6至9中任意一项所述的方法。
  13. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序，当所述计算机程序在计算机上运行时，
    使得所述计算机执行如权利要求1至5中任意一项所述的方法，或者
    使得所述计算机执行如权利要求6至9中任意一项所述的方法。
  14. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机程序，当所述计算机程序被运行时，
    使得所述计算机执行如权利要求1至5中任意一项所述的方法，或者
    使得所述计算机执行如权利要求6至9中任意一项所述的方法。
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