WO2021046816A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2021046816A1
WO2021046816A1 PCT/CN2019/105757 CN2019105757W WO2021046816A1 WO 2021046816 A1 WO2021046816 A1 WO 2021046816A1 CN 2019105757 W CN2019105757 W CN 2019105757W WO 2021046816 A1 WO2021046816 A1 WO 2021046816A1
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WIPO (PCT)
Prior art keywords
terminal device
message
duration
communication
dedicated signaling
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PCT/CN2019/105757
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English (en)
French (fr)
Inventor
何青春
常俊仁
张向东
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201980096577.8A priority Critical patent/CN113853815B/zh
Priority to PCT/CN2019/105757 priority patent/WO2021046816A1/zh
Publication of WO2021046816A1 publication Critical patent/WO2021046816A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method and device.
  • the new radio (NR) communication technology defines a system information (system information, SI) method for obtaining (on demand SI).
  • SI system information
  • the UE can request the network device to send the required system messages to the UE in the manner of broadcast or dedicated signaling, so as to realize the flexible transmission of the system messages.
  • the network device can send a broadcast message carrying the system message within the configured SI time window, and the UE can receive the system message through broadcast within the SI time window.
  • the network equipment sends system messages through the dedicated signaling of the UE, it is currently unclear when the UE will receive the system messages.
  • the UE may repeatedly request the system messages carried by the dedicated signaling to the network equipment within a short period of time. The equipment brings too much burden, which hinders the communication of the UE based on the system message.
  • the current scheme for the UE to receive system messages carried in dedicated signaling needs to be optimized.
  • the present application provides a communication method and device to optimize a solution for a terminal to receive system messages sent by a network device through dedicated signaling.
  • this application provides a communication method.
  • This method can be executed by a terminal device such as a mobile phone or a chip in the terminal device.
  • the terminal device may receive first timing information from the network device, where the first timing information is used to indicate a first duration, and the first duration is the minimum time interval between two request messages sent by the terminal device, each The request message is used to request to obtain a dedicated signaling system message carried on the terminal device.
  • the network device can configure the terminal device with the first duration.
  • the first duration is used to indicate the minimum time interval between the terminal device requesting the network device to carry the system message carried in the dedicated signaling. How long is the interval between devices to request again for system messages carried in dedicated signaling to avoid overloading the network equipment.
  • the terminal device may also send a first message to the network device, where the first message is used to request to obtain a dedicated signaling system message carried by the terminal device.
  • the terminal device may trigger the execution of the timing of the first time length when sending the first message, or the terminal device may trigger the execution of the first time when a second message used to respond to the first message is received. Timing of duration. After the first time duration expires, if the terminal device does not receive the system message sent by the network device through the dedicated signaling of the terminal device, the terminal device may send a third message, the first The third message is used to request to obtain a system message of dedicated signaling carried on the terminal device.
  • the time interval between the first message and the third message that the terminal device sends for requesting to obtain the system message of the dedicated signaling carried on the terminal device is not less than the first time length, which can avoid network equipment Overburdened.
  • the first message may be dedicated signaling of the terminal device.
  • the dedicated signaling can be scrambled by the dedicated identification of the terminal device.
  • the above first message can be carried on a signaling radio bearer.
  • the terminal device may trigger a third timer to start the counting of the first duration when receiving the second message, or the terminal device may start counting the first duration when the second message is received.
  • the fourth timer is triggered to restart the counting of the first duration.
  • the third timer may be the same as or different from the fourth timer.
  • the third timer may be the same as or different from the above first timer and second timer, and the fourth timer may be the same or different from the above first timer and second timer.
  • the first message may be a first random access request message
  • the second message may be a first random access response message including only a random access preamble identifier
  • the second message is The network device responds to the first message sent by the terminal device via Msg1.
  • the first random access request message may be a random access request message Msg1 in a four-step random access process.
  • the second message may be a random access response (RAR) message containing only a random access preamble identifier (RAP ID).
  • the first message may be random access uplink data
  • the second message may be a contention resolution message.
  • the first random access request message may be random access uplink data Msg3 in the four-step random access process.
  • the second message may be the contention resolution message Msg4 in the four-step random access process.
  • the terminal device may stop performing the timing of the first duration.
  • the terminal device may suspend the execution of the The timing of the first duration.
  • the terminal device in the connected state will consider the current serving cell to be unavailable and report the handover Auxiliary information, so that the network equipment can switch the serving cell of the terminal device according to the handover auxiliary information, so as to improve the transmission quality of the terminal device.
  • the above counting threshold may be configured by the network device, or the counting threshold may be defined by a protocol or determined by a pre-configuration method.
  • the terminal device may restore the count value of the counter to the initial value, and there is no need to report the handover assistance information.
  • an embodiment of the present application provides a communication method.
  • the method can be executed by a network device or a chip in the network device.
  • the network equipment may include access network equipment, such as a base station. It includes determining first timing information by a network device, where the first timing information is used to indicate a first duration, and the first duration is the minimum time interval between two request messages sent by the terminal device.
  • the request message is used to request to obtain a dedicated signaling system message carried on the terminal device.
  • the network device may send the first timing information to the terminal device.
  • the above first timing information may be carried in a broadcast message or dedicated signaling of the terminal device.
  • the network equipment may also receive handover assistance information from the terminal device, the handover assistance information being used for handover of the serving cell of the terminal device, and determine whether to switch the serving cell of the terminal device according to the handover assistance information .
  • an embodiment of the present application provides a communication device.
  • the communication device can be used to perform the steps performed by the terminal device in the first aspect or any possible design of the first aspect.
  • the communication device can implement each function or step or operation in each of the foregoing methods through a hardware structure, a software module, or a hardware structure plus a software module.
  • a communication device may be provided with functional modules corresponding to the functions or steps or operations in the foregoing methods to support the communication device to execute the foregoing methods.
  • the communication device may include a communication module and a processing module coupled with each other, wherein the communication module can be used to support the communication device to communicate, and the processing module can be used for the communication device to perform processing operations, Such as generating information/messages that need to be sent, or processing received signals to obtain information/messages.
  • the above communication module can be used to perform the sending and/or receiving actions of the terminal device in any possible design of the first aspect and/or the first aspect, such as the action of sending information, messages or signaling from the terminal device to the network device, Or it is used to perform the action of receiving information, messages or signaling from the network device.
  • the processing module can be used to perform the processing actions of the terminal device in the first aspect and/or any possible design of the first aspect, such as controlling the communication module to receive and send information, messages or signaling, and information Storage and other operations.
  • the communication module may be used to receive first timing information from a network device, where the first timing information is used to indicate a first duration, and the first duration is the minimum value between two request messages sent by the terminal device. Time interval, each of the request messages is used to request to obtain a dedicated signaling system message carried by the terminal device.
  • the communication module may also be used to send a first message to the network device, where the first message is used to request to obtain a dedicated signaling system message carried on the terminal device.
  • the processing module may trigger the execution of the timing of the first duration when the first message is sent, or the processing module may trigger the execution of the timing of the first time when a second message used to respond to the first message is received. The timing of the first duration.
  • the communication module may send a third message, and the first The third message is used to request to obtain a system message of dedicated signaling carried on the terminal device.
  • the processing module may trigger a first timer to start the timing of the first duration when sending the first message, or the processing module may trigger a second timer when sending the first message Restart the counting of the first duration.
  • the first timer may be the same as or different from the second timer.
  • the above first message may be dedicated signaling of the terminal device.
  • the dedicated signaling can be scrambled by the dedicated identification of the terminal device.
  • the above first message may be carried by the signaling radio bearer.
  • the processing module may trigger a third timer to start the counting of the first duration when the terminal device receives the second message through the communication module, or the processing module A fourth timer may be triggered to restart the counting of the first duration when the terminal device receives the second message through the communication module.
  • the third timer may be the same as or different from the fourth timer.
  • the third timer may be the same as or different from the above first timer and second timer, and the fourth timer may be the same or different from the above first timer and second timer.
  • the first message may be a first random access request message
  • the second message may be a first random access response message that only includes a random access preamble identifier
  • the second message is for the network device to address
  • the terminal device responds with the first message sent by Msg1.
  • the first random access request message may be a random access request message Msg1 in a four-step random access process.
  • the second message may be a random access response (RAR) message containing only a random access preamble identifier (RAP ID).
  • the first message may be random access uplink data
  • the second message may be a contention resolution message.
  • the first random access request message may be random access uplink data Msg3 in the four-step random access process.
  • the second message may be the contention resolution message Msg4 in the four-step random access process.
  • the first message may be a second random access request message
  • the second message may be a second random access response message.
  • the first random access request message may be a random access request message MsgA in a two-step random access process.
  • the second message may be the random access response message MsgB in the two-step random access process.
  • the above first message may include the identification of the terminal device and/or the system message list.
  • the identifier of the terminal device may be a cell-radio network temporary identifier (TC-RNTI) of the terminal device.
  • the identification of the terminal device can determine which terminal device initiates the system message acquisition request.
  • the system message list is used to indicate the system messages required by the terminal device.
  • the system message list may include one or more system information blocks (SIB) or one or more system messages. Among them, the system message block corresponds to the system message required by the terminal device 101 (in other words, one or more system message blocks may be mapped to system messages).
  • SIB system information blocks
  • the processing module may stop performing the timing of the first duration.
  • the processing module may suspend execution within the overlapped time period The timing of the first duration.
  • the processing module can maintain a counter. After each request message is sent, the processing module can perform a count of the counter.
  • the request message is used to request to obtain a dedicated signaling system message carried by the terminal device.
  • the request message includes the first message and/or the third message; the processing module may trigger the communication module to send handover assistance information to the network device after the count value of the counter reaches the count threshold.
  • the network equipment can switch the serving cell of the terminal device according to the handover assistance information.
  • the above handover assistance information may be an indication of failure to obtain system information or an indication of timeout of obtaining system information, etc.
  • the handover assistance information can be used by the network equipment to determine whether to switch the serving cell of the terminal device.
  • the above counting threshold may be configured by the network device, or the counting threshold may be defined by a protocol or determined by a pre-configuration method.
  • the processing module may restore the count value of the counter to the initial value. There is no need to report handover auxiliary information.
  • the communication device may include a processor for executing the steps performed by the terminal device in the first aspect and/or any possible design of the first aspect.
  • the communication device may also include a memory.
  • the memory may be used to store instructions, and the processor may be used to call and run the instructions from the memory to execute the steps performed by the terminal device in the first aspect and/or any possible design of the first aspect.
  • the communication device may further include a transceiver for the communication device to communicate.
  • the transceiver may be used to perform the sending and/or receiving actions of the terminal device in the first aspect and/or any possible design of the first aspect, such as the terminal device sending information, messages or signaling to the network device. Actions, or actions used to perform receiving information, messages, or signaling from network devices.
  • the processor can be used to perform the processing actions of the terminal device in the first aspect and/or any possible design of the first aspect, such as controlling the transceiver to receive and send information, messages or signaling, and control
  • the memory performs information storage and so on.
  • the transceiver can be used to perform the steps performed by the communication module described in the third aspect above.
  • the processor may be used to execute the steps executed by the processing module described in the third aspect above.
  • an embodiment of the present application provides a communication device.
  • the communication device can be used to perform the steps performed by the network device in the second aspect or any possible design of the second aspect.
  • the communication device can implement each function or step or operation in each of the foregoing methods through a hardware structure, a software module, or a hardware structure plus a software module.
  • a communication device may be provided with functional modules corresponding to the functions or steps or operations in the foregoing methods to support the communication device to execute the foregoing methods.
  • the communication device may include a communication module and a processing module coupled with each other, wherein the communication module can be used to support the communication device to communicate, and the processing module can be used for the communication device to perform processing operations, Such as generating information/messages that need to be sent, or processing received signals to obtain information/messages.
  • the above communication module can be used to perform the sending and/or receiving actions of the network device in any possible design of the second aspect and/or the second aspect, such as the action of sending information, messages or signaling from the network device to the terminal device, or It is used to perform the action of receiving information, message or signaling from the terminal device.
  • the processing module can be used to execute the processing actions of the network device in the second aspect and/or any possible design of the second aspect, such as controlling the communication module to receive and send information, messages, or signaling, and execute Information storage and other operations.
  • the processing module may be used to determine first timing information, where the first timing information is used to indicate a first duration, and the first duration is the minimum time interval between two request messages sent by the terminal device, Each of the request messages is used to request to obtain a dedicated signaling system message carried on the terminal device.
  • the communication module may be used to send the first timing information to the terminal device.
  • the above first timing information is carried in a broadcast message or dedicated signaling of the terminal device.
  • the communication module can also be used to receive handover assistance information from the terminal device, the handover assistance information is used for handover of the serving cell of the terminal device, and the processing module can be used to determine whether to switch the terminal device’s Service area.
  • the communication device may include a processor for executing the steps performed by the network device in the foregoing second aspect and/or any possible design of the second aspect.
  • the communication device may further include a memory.
  • the memory may be used to store instructions, and the processor may be used to call and run the instructions from the memory to execute the steps performed by the network device in the second aspect and/or any possible design of the second aspect.
  • the communication device may further include a transceiver for the communication device to communicate.
  • the transceiver may be used to perform the sending and/or receiving actions of the network device in any possible design of the second aspect and/or the second aspect, such as being used to perform the network device sending information, messages or signaling to the terminal device , Or to perform the action of receiving information, messages, or signaling from the terminal device.
  • the processor may be used to perform the processing actions of the network device in any possible design of the second aspect and/or the second aspect, such as controlling the transceiver to receive and send information, messages, or signaling, and control
  • the memory performs information storage and so on.
  • the transceiver can be used to perform the steps performed by the communication module described in the fourth aspect above.
  • the processor may be used to execute the steps executed by the processing module described in the fourth aspect above.
  • the present application provides a communication system, which may include the communication device shown in the third aspect and the communication device shown in the fourth aspect.
  • the communication device shown in the third aspect may be composed of software modules and/or hardware components.
  • the communication device shown in the fourth aspect may be composed of software modules and/or hardware components.
  • the network device may determine first timing information, where the first timing information is used to indicate the first duration, The first duration is the minimum time interval between two request messages sent by the terminal device, and each of the request messages is used to request to obtain a dedicated signaling system message carried by the terminal device.
  • the network device may send the first timing information to the terminal device.
  • the terminal device can receive the first timing information.
  • this application provides a computer storage medium in which instructions (or programs) are stored, which when invoked and executed on a computer, cause the computer to execute the first aspect or the first aspect described above. Any possible design, or the method described in the second aspect or any possible design of the second aspect.
  • the present application provides a computer program product, which may contain instructions that when the computer program product runs on a computer, the computer can execute the first aspect or any one of the possible designs of the first aspect. , Or the method described in the second aspect or any one of the possible designs of the second aspect.
  • the present application provides a chip and/or a chip system including the chip, and the chip may include a processor.
  • the chip may also include a memory (or storage module) and/or a transceiver (or communication module).
  • the chip can be used to implement the method described in the first aspect or any one of the possible designs of the first aspect, or the second aspect or any one of the possible designs of the second aspect.
  • the chip system may be composed of the above-mentioned chips, or may include the above-mentioned chips and other discrete devices, such as a memory (or storage module) and/or a transceiver (or communication module).
  • FIG. 1 is a schematic diagram of the architecture of a wireless communication system provided by an embodiment of this application;
  • FIG. 3 is a schematic diagram of a four-step random access process provided by an embodiment of this application.
  • FIG. 4 is a schematic diagram of a two-step random access process provided by an embodiment of this application.
  • FIG. 5 is a schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 6 is a schematic diagram of timing for executing a first duration according to an embodiment of this application.
  • FIG. 7 is another schematic diagram of timing for executing the first duration according to an embodiment of the application.
  • FIG. 10 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 11 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 12 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 13 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 14 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • 15 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 16 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 17 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • the communication method provided by the embodiment of the present application can be applied to a wireless communication system 100, and the wireless communication system may include a terminal device 101 and a network device 102.
  • the above wireless communication system 100 can be applied to both low-frequency scenarios (sub 6G) and high-frequency scenarios (above6G).
  • the application scenarios of the wireless communication system 100 include but are not limited to long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), general mobile Communication system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (WiMAX) communication system, cloud radio access network (CRAN) system, future fifth-generation system, New radio (NR) communication system or the future evolved public land mobile network (PLMN) system, etc.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS general mobile Communication system
  • WiMAX worldwide interoperability for microwave access
  • CDRF cloud radio access network
  • NR New radio
  • PLMN future evolved public land mobile network
  • the terminal device 101 shown above may be a user equipment (UE), a terminal (terminal), an access terminal, a terminal unit, a terminal station, a mobile station (MS), a remote station, a remote terminal, a mobile terminal ( mobile terminal), wireless communication equipment, terminal agent or terminal equipment, etc.
  • the terminal device 101 may have a wireless transceiver function, which can communicate with one or more network devices of one or more communication systems (such as wireless communication), and accept network services provided by the network devices.
  • the network devices here include but not It is limited to the network device 102 shown in the figure.
  • the terminal device 101 may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, Handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network or terminal devices in the future evolved PLMN network, etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the terminal device 101 can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; the terminal device 101 can also be deployed on the water (such as ships, etc.); the terminal device 101 can also be deployed in the air (such as airplanes, balloons, and satellites).
  • the terminal device 101 may specifically be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, an industrial control ( Wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, and transportation safety Wireless terminal, wireless terminal in smart city, wireless terminal in smart home, etc.
  • the terminal device 101 may also be a communication chip with a communication module, or a vehicle with a communication function, or an in-vehicle device (such as an in-vehicle communication device, an in-vehicle communication chip), or the like.
  • the network device 102 may be an access network device (or called an access website point).
  • the access network equipment refers to equipment that provides network access functions, such as a radio access network (RAN) base station and so on.
  • the network device 102 may specifically include a base station (base station, BS), or include a base station and a radio resource management device for controlling the base station, and so on.
  • the network device 102 may also include a relay station (relay device), an access point, and a base station in a future 5G network, a base station in a future evolved PLMN network, or an NR base station, etc.
  • the network device 102 may be a wearable device or a vehicle-mounted device.
  • the network device 102 may also be a communication chip with a communication module.
  • the network equipment 102 includes but is not limited to: the next generation base station (gnodeB, gNB) in 5G, the evolved node B (evolved node B, eNB) in the LTE system, and the radio network controller (RNC). , Wireless controller under CRAN system, base station controller (BSC), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (BBU), transmission point (transmitting) and receiving point, TRP), transmitting point (TP) or mobile switching center, etc.
  • the network device 102 may also include a base station in a future 6G or newer mobile communication system.
  • the following takes the 5G network architecture shown in FIG. 2 as an example to illustrate a wireless communication system to which the embodiments of the present application can be applied.
  • the wireless communication system shown in FIG. 2 may include a 5G core network 201, and the wireless communication system may also include a 5G access network 202, wherein the 5G core network 201 and the 5G access network 202 can interact with each other through an interface.
  • the functional entity used to implement the method involved in the embodiment of the present application may be a network element and/or a terminal device in the 5G core network 201, etc.
  • the terminal device 101 shown in FIG. 1 above may include a terminal device connected to a base station in the 5G access network 202, for example, the UE 203 shown in FIG. 2.
  • the UE 203 is connected to the access network device 204 through a wireless link, and the access network device 204 may be a 5G base station in the 5G access network 202.
  • the terminal device 101 shown in FIG. 1 above may include a UE connected to a relay station, such as the UE 205 shown in FIG. 2. Among them, the UE 205 is connected to a relay station 206, and the relay station 206 is connected to the access network device 204 through a relay link.
  • the network device 102 shown in FIG. 1 above may include the access network device 204 in the 5G access network 202 shown in FIG. 2, or it may be a relay station connected to the access network device 204 as shown in FIG. 206 and so on.
  • the terminal device 101 can perform random access in four steps or two In the random access procedure, the network device 102 is requested for system messages carried in dedicated signaling.
  • the four-step random access process may include the following steps:
  • the terminal device sends Msg1 (which may be referred to as the first random access request message in the following) to the network device.
  • Msg1 is a random access request, including a random access preamble code (or preamble, preamble), the random access preamble can be randomly selected by the terminal device, and the terminal device sends to the network equipment on the RACH Send Msg1.
  • the network device receives Msg1 from the terminal device.
  • Msg2 is the random access response (RAR) information for the preamble, including reserved bits (usually denoted by R), timing advance (TA) command, uplink grant (uplink grant) ) And temporary cell-radio network temporary identifier (TC-RNTI), etc.
  • RAR random access response
  • TA timing advance
  • TC-RNTI temporary cell-radio network temporary identifier
  • the uplink authorization refers to the indication information of the uplink resource location allocated by the network equipment to the terminal device
  • the TC-RNTI is a temporary cell wireless network temporary identifier allocated by the network equipment to the terminal device.
  • the terminal device receives Msg2 from the network device.
  • the terminal device can use the RA-RNTI on the PDCCH to monitor the DCI scheduling the PDSCH carrying Msg2.
  • Msg3 is uplink data or uplink payload (UL payload), and Msg3 is carried on the physical layer uplink shared channel (PUSCH).
  • PUSCH physical layer uplink shared channel
  • the Msg3 involved in S13 can be referred to as uplink data.
  • the terminal device After the terminal device sends Msg3, it immediately starts a contention resolution timer (the timer must be restarted every subsequent retransmission of Msg3), and the terminal device monitors the network device to return to itself before the timer expires. Competition resolution news.
  • the uplink data may include uplink small packet data, such as data such as the identification of the terminal device.
  • the network device receives Msg3 from the terminal device.
  • the network device sends Msg4 (hereinafter may be referred to as a contention resolution message) to the terminal device.
  • Msg4 is contention resolution message (CRM).
  • the network device when the network device sends the contention resolution message to the terminal device, when the terminal device is in the RRC idle state or the RRC inactive state, the TC-RNTI can be used to scramble the DCI.
  • the terminal monitors the DCI scrambled by the TC-RNTI, it demodulates the response information carried on the PDSCH indicated by the DCI, and checks the contention resolution identifier carried in the PDSCH. , CRID) is matched with the common control channel serving data unit (CCCH SDU) carried by the Msg3 of the terminal device. If they are the same, the terminal device considers that the contention resolution is successful. Otherwise, the terminal device considers that this random access has failed.
  • CCCH SDU common control channel serving data unit
  • the terminal device may request a system message carried in dedicated signaling from the network device through the four-step random access process shown in FIG. 3 above.
  • the terminal device 101 may carry the identification of the required system message in the above Msg1 and/or Msg3.
  • the network device 102 may use the terminal device 101 The dedicated signaling sends the system message needed by the terminal device 101 to the terminal device 101.
  • the two-step random access method includes the following steps:
  • the terminal device sends an MsgA (hereinafter may be referred to as a second random access request message) to the network device.
  • MsgA hereinafter may be referred to as a second random access request message
  • MsgA is a random access request, including a random access preamble and UL payload, which is equivalent to Msg1 and Msg3 in the 4-step RACH in FIG. 4 above.
  • the network device sends an MsgB (hereinafter may be referred to as a second random access response message) to the terminal device.
  • MsgB hereinafter may be referred to as a second random access response message
  • the network equipment may use the following method when sending the contention resolution identification to the terminal device in the RRC idle state or the RRC inactive state: the network equipment uses a common RNTI to add DCI. Disturb. Based on this method, the terminal device needs to demodulate the received PDSCH indicated by the DCI to obtain the CRID carried in the response information carried by the PDSCH, and compare it with the UE identifier (ID) or UL CCCH SDU before it can confirm whether the contention is resolved. success.
  • the terminal device may request a system message carried in dedicated signaling from the network device through the two-step random access process shown in FIG. 4 above.
  • the terminal device 101 may carry the identification of the required system message in the above MsgA.
  • the network device 102 may send to the terminal device 101 through dedicated signaling of the terminal device 101 The system messages it needs.
  • the terminal device 101 may also send a request message to the network device 102 through dedicated signaling.
  • the request message may carry the identification of the system message required by the terminal device 101 to request the network device 102 to send the terminal device 101’s dedicated signaling to the terminal.
  • the device 101 sends the system messages it needs.
  • the terminal device 101 can request the network device 102 for the system message carried in the dedicated signaling, because there is currently no limit to the time interval between the terminal device 101 requesting the system message carried in the dedicated signaling from the network device twice. Therefore, multiple requests in a short period of time may bring an excessive burden to the network device 102.
  • the communication method may include the following steps:
  • the terminal device 101 may send a request message to the network device 102, and the request message may carry the identification of the terminal device 101 and/or the system requested by the terminal device 101 Message list.
  • the system message list may be used to indicate system messages required by the terminal device 101.
  • the system message list may include one or more system information blocks (SIB) or one or more system messages.
  • SIB system information blocks
  • the system message block corresponds to the system message required by the terminal device 101 (in other words, one or more system message blocks may be mapped to system messages). For example, if the cycles of SIB3/SIB4/SIB5 are the same, they can be mapped into a system message.
  • the above system message list here refers to one or more system messages, which may be in the form of a list or not in the form of a list, but are only represented by multiple one or more system messages.
  • request message in this application may include dedicated signaling sent by the terminal device 101, or include Msg1, Msg3, or MsgA sent by the terminal device 101 in the random access process.
  • the network device 102 sends the first timing information to the terminal device 101.
  • the terminal device 101 receives the first timing information from the network device 102.
  • the network device 102 can configure the terminal device 101 with a first duration.
  • the first duration is used to indicate the time interval for the terminal device 101 to request system messages carried in dedicated signaling from the network device 102 twice before and after, so it is clear How long can the terminal device 101 request again to obtain the system message carried in the dedicated signaling.
  • the dedicated signaling of the terminal device 101 refers to signaling dedicated to the terminal device 101, such as radio resource control (RRC) signaling dedicated to the terminal device 101.
  • RRC radio resource control
  • the dedicated signaling may be RRC reconfiguration (reconfiguration) signaling or an independent RRC message dedicated to system message transmission.
  • the dedicated signaling may be scrambled by the dedicated identifier of the terminal device 101 to indicate that it is dedicated to the terminal device 101.
  • the dedicated identifier of the terminal device 101 may be a cell radio network temporary identifier (C-RNTI) of the terminal device 101.
  • the dedicated identifier of the terminal device 101 may be configured scheduling RNTI (CS-RNTI) or modulation and coding strategy wireless network temporary identification (modulation and coding scheme RNTI, MCS-RNTI), etc.
  • the network is the terminal device.
  • the identifier assigned by 101 can uniquely identify the terminal device 101.
  • the terminal device 101 may perform the first time duration after sending the request message to the network device 102. After the timing expires, if the terminal device 101 does not receive the dedicated signaling message carried by the terminal device 101 from the network device 102 System message, the terminal device 101 can request the system message from the network device 102 again.
  • the "executing the timing of the first duration" in this application may include starting the timer and making the timer execute the timing of the first duration, or including restarting (or re-executing) the timer and making the timer execute The timing of the first duration.
  • restarting means that the timer that is already executing the first time length resets the time length to zero and executes the first time length time again, for example, the first time length is 60 milliseconds (ms), if the timer has already executed 10 ms
  • the terminal device 101 can trigger the timer to re-execute the timing of 60ms.
  • the terminal device 101 may send a first message to the network device 102, and the first message may be used to request a dedicated signaling system message carried by the terminal device 101.
  • the terminal device 101 may trigger the execution of the timing of the first duration when sending the first message. After the first time duration expires, if the terminal device 101 does not receive the system message sent by the network device 102 through the dedicated signaling of the terminal device 101, the terminal device 101 may send a third message to the network device 102.
  • Three messages are used to request the system message.
  • the first message and the third message may be the same system message as the request to obtain, for example, the first message and the third message carry a system message list of the system to indicate the same system message.
  • the first message is, for example, dedicated signaling sent by the terminal device 101, and the dedicated signaling may be scrambled by the dedicated identifier of the terminal device 101.
  • the dedicated signaling may be carried on a signaling radio bearer (SRB), such as SRB1, SRB2, or SRB3.
  • SRB signaling radio bearer
  • the third message may include dedicated signaling sent by the terminal device 101, or Msg1, Msg3, or MsgA sent by the terminal device 101 during the random access process.
  • the above request message includes the first message and/or the third message.
  • the terminal device 101 may trigger the execution of the timing of the first duration after the first offset duration after sending the first message.
  • the first offset duration may be configured by the network device 102 through broadcast or dedicated signaling of the terminal device 101, or may be determined by a protocol or through a pre-configuration manner.
  • the first message is, for example, Msg1, Msg3, or MsgA sent by the terminal device 101 during the random access process.
  • the second message may be a RAR message including (or only including) a random access preamble ID (RAP ID), and the RAR message is a system message carried by the network device 102 on the Msg1 The response message sent by the request.
  • RAP ID random access preamble ID
  • the second message may be Msg4.
  • the second message may be MsgB.
  • the above third message may include dedicated signaling sent by the terminal device 101, or Msg1, Msg3, or MsgA sent by the terminal device 101 in the random access process.
  • the above request message includes the first message and/or the third message.
  • the first message and the third message may be the same system message as the request to obtain, for example, the first message and the third message carry a system message list of the system to indicate the same system message.
  • the terminal device 101 may trigger the execution of the timing of the first duration after the second offset duration after receiving the second message.
  • the second offset duration may be configured by the network device 102 through broadcast or dedicated signaling of the terminal device 101, or may be determined by a protocol or through a pre-configured manner.
  • the second message may be a RAR message including a RAP ID, Msg4, or MsgB.
  • the second offset duration may be the same or different.
  • the terminal device 101 may also trigger the execution of the timing of the first duration when sending the above third message, or trigger the execution of the timing of the first duration when receiving the fourth message for responding to the above third message.
  • the terminal device 101 may send a request message to the network device 102 again (for example, called Is the fifth message), the fifth message is used to request to obtain the system message.
  • the fifth message is used to request to obtain the system message.
  • the terminal device 101 may send the request message again or multiple times after sending the fifth message, until the maximum number of requests is reached or the system message is received.
  • the maximum number of requests can be configured by the network device through broadcast transmission or dedicated signaling, or defined by a protocol or determined by a pre-configuration method.
  • the fourth message when the third message is Msg1, the fourth message may be a RAR message including the RAP ID.
  • the fourth message may be Msg4.
  • the fourth message When the third message is MsgA, the fourth message may be MsgB.
  • the terminal device 101 may stop the timing of the first duration. Stopping the timing of the first duration here may mean that the terminal device 101 controls the timer for executing the timing of the first duration to reset to zero and controls the timer not to continue timing, or it means that the terminal device 101 controls the execution of the first duration. The time-keeping timer does not continue to keep time. It should be understood that receiving the system message by the terminal device 101 may mean that the terminal device 101 receives and parses the dedicated signaling from the network device 102 to obtain the system message carried by the dedicated signaling.
  • the system message borne in dedicated signaling received by the terminal device 101 may be consistent with the system message required by the terminal device 101, or the system message borne in dedicated signaling received by the terminal device 101 may include the system required by the terminal device 101. news.
  • the terminal device 101 when the terminal device 101 sends the first message at time t0, the terminal device 101 starts to count the first duration. If the terminal device 101 receives a dedicated signaling system message carried by the terminal device 101 from the network device 102 at time t1, the terminal device 101 can stop counting the first duration from time t1. After the first period of time expires (the time when the timer expires is t2), if the terminal device 101 still does not receive the system message carried by the dedicated signaling, the terminal device 101 can send a third message at time t3 to request the acquisition again System message, and the terminal device 101 executes the counting of the first time length again from time t3.
  • the terminal device 101 may also maintain a counter, and the counting result of the counter may indicate the number of request messages sent by the terminal device 101 for requesting the same system message.
  • the count value of the counter can be accumulated from the initial value (such as 0).
  • the terminal device 101 controls the counter to perform one count every time after sending a request message for requesting the same system message.
  • the terminal device 101 controls the counter to perform one count after sending the above first message or third message.
  • the terminal device 101 may send handover assistance information to the network device 102 to The network equipment 102 can switch the serving cell of the terminal device 101 according to the handover assistance information.
  • the terminal device 101 when the terminal device 101 receives a system message carried by dedicated signaling from the network device 102, the terminal device 101 can restore the count value of the counter to the initial value, such as 0.
  • the network device 102 may configure a measurement gap to the terminal device 101, and the terminal device 101 will not send or receive any signaling or data during the measurement interval.
  • the terminal device 101 suspends the time of the first time duration during the overlapping time period.
  • the terminal device 101 may control the timer for performing the timing of the first duration to suspend timing when the time period of the measurement interval starts. , And control the timer to continue timing when the time period of the measurement interval ends, so that the timer performs a total of the first length of time before and after the time is suspended.
  • a communication method provided in an embodiment of the present application may include the following steps:
  • the network device 102 sends the first timing information to the terminal device 101. Accordingly, the terminal device 101 receives the first timing information.
  • the dedicated signaling can be used to request to obtain the system message of the dedicated signaling carried on the terminal device 101.
  • the dedicated signaling may carry a list of system messages.
  • the dedicated signaling may also carry the identity of the terminal device 101.
  • the terminal device 101 may trigger the timing of the first duration while sending the dedicated signaling, or the first offset duration after sending the dedicated signaling triggers the timing of the first duration.
  • the terminal device 101 If the terminal device 101 receives the dedicated signaling system message carried by the terminal device 101 sent by the network device 102 before the timing of the first duration expires, it performs the steps shown in S44-S45:
  • the terminal device 101 determines that a dedicated signaling system message carried by the terminal device 101 sent by the network device 102 is received before the timing of the first duration expires.
  • a communication method provided in an embodiment of the present application may include the following steps:
  • the network device 102 configures the first timing information.
  • the first timing information is used to indicate the first duration.
  • the network device 102 sends the first timing information to the terminal device 101. Accordingly, the terminal device 101 receives the first timing information.
  • Msg1 can be used to request to obtain the system message of the dedicated signaling carried on the terminal device 101.
  • the Msg1 can carry a system message list.
  • Msg1 may also carry the identification of the terminal device 101.
  • the terminal device 101 receives the RAR message carrying the RAP ID from the network device 102, and performs timing of the first duration. Among them, the RAR message may carry a request response.
  • the terminal device 101 may trigger the timing of the first duration when receiving the RAR message, or trigger the timing of the first duration after receiving the RAR message at a second offset duration.
  • the terminal device 101 receives a dedicated signaling system message carried by the terminal device 101 sent by the network device 102 before the timing of the first duration expires.
  • S56 The terminal device 101 stops performing the counting of the first duration.
  • the terminal device 101 determines that the timing of the first duration has timed out, and has not received a system message of dedicated signaling carried by the terminal device 101 from the network device 102.
  • the terminal device 101 sends a third message to the network device 102, and the third message may be used to request to obtain the system message of the dedicated signaling carried on the terminal device 101.
  • the third message may be the same as or different from the first message.
  • a communication method provided in an embodiment of the present application may include the following steps:
  • the network device 102 configures the first timing information.
  • the first timing information is used to indicate the first duration.
  • the network device 102 sends the first timing information to the terminal device 101. Accordingly, the terminal device 101 receives the first timing information.
  • the terminal device 101 sends Msg3 to the network device 102.
  • Msg3 can be used to request to obtain the system message of the dedicated signaling carried on the terminal device 101.
  • the Msg3 can carry a system message list.
  • Msg3 may also carry the identification of the terminal device 101.
  • the terminal device 101 receives the Msg4 from the network device 102, and executes the timing of the first duration. Among them, the Msg4 can carry a request response.
  • the terminal device 101 may trigger the timing of the first duration while receiving the Msg4 message, or trigger the timing of the first duration after receiving the Msg4 message at a second offset duration.
  • the terminal device 101 receives a dedicated signaling system message carried by the terminal device 101 sent by the network device 102 before the timing of the first duration expires.
  • S66 The terminal device 101 stops executing the timing of the first duration.
  • the terminal device 101 determines that the timing of the first duration has timed out, and has not received a dedicated signaling system message carried by the terminal device 101 from the network device 102.
  • the terminal device 101 sends a third message to the network device 102, and the third message may be used to request to obtain the system message of the dedicated signaling carried on the terminal device 101.
  • the third message may be the same as or different from the first message.
  • a communication method provided in an embodiment of the present application may include the following steps:
  • the network device 102 configures the first timing information.
  • the first timing information is used to indicate the first duration.
  • the network device 102 sends the first timing information to the terminal device 101. Accordingly, the terminal device 101 receives the first timing information.
  • the terminal device 101 receives the MsgB from the network device 102, and executes the timing of the first duration. Among them, the MsgB can carry a request response.
  • the terminal device 101 receives a dedicated signaling system message carried by the terminal device 101 sent by the network device 102 before the timing of the first duration expires.
  • S76 The terminal device 101 stops performing the counting of the first duration.
  • the terminal device 101 determines that the timing of the first duration has timed out, and has not received a dedicated signaling system message carried by the terminal device 101 from the network device 102.
  • the terminal device 101 sends a third message to the network device 102, and the third message may be used to request to obtain the system message of the dedicated signaling carried on the terminal device 101.
  • the third message may be the same as or different from the first message.
  • the network device 102 configures threshold information, where the threshold information is used to indicate a counting threshold.
  • the terminal device 101 sends a first request to the network device 102.
  • the first request can be used to request to obtain a dedicated signaling system message carried by the terminal device 101.
  • the first request may carry a list of system messages.
  • the first request may also carry the identification of the terminal device 101.
  • S804 The terminal device 101 controls the counter to perform one count.
  • the terminal device 101 If the terminal device 101 receives the system message of the dedicated signaling carried by the terminal device 101 sent by the network device 102, it executes the steps shown in S805-S806:
  • the terminal device 101 determines that a dedicated signaling system message carried by the terminal device 101 sent by the network device 102 is received before the timing of the first duration expires.
  • S806 The terminal device 101 restores the count of the counter to the initial value.
  • the terminal device 101 determines that the timing of the first duration has timed out, and does not receive a dedicated signaling system message carried by the terminal device 101 from the network device 102.
  • the terminal device 101 sends a third message to the network device 102, and controls the counter to perform one count.
  • the third message can be used to request to obtain a dedicated signaling system message carried by the terminal device 101.
  • the third message may be the same as or different from the first message.
  • the terminal device 101 can trigger the timing of the first duration again when sending the third message, if the dedicated signaling carried by the terminal device 101 from the network device 102 is not received before the timing of the first duration expires Message, the terminal device 101 can send a third message again, and trigger the counting of the first duration again and control the counter to perform one count.
  • the terminal device 101 determines that the count of the counter reaches (or exceeds) the count threshold, it executes the steps shown in S809-S811:
  • the terminal device 101 may send the third message one or more times before determining that the count of the counter reaches (or exceeds) the count threshold, and the specific number of times is related to the value of the count threshold.
  • the network equipment 102 determines whether to switch the serving cell of the terminal device 101 according to the handover assistance information.
  • the manner in which the network equipment 102 determines whether to switch the cell of the terminal device 101 and the manner in which the serving cell of the terminal device 101 is switched can be referred to the prior art, which is not specifically limited in this application.
  • the method provided in the embodiments of the present application is introduced from the perspective of the functions implemented by the terminal device.
  • the terminal device may include a hardware structure and/or a software module, and realize the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether a certain function of the above-mentioned functions is executed by a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraint conditions of the technical solution.
  • a communication device may include a communication module 1301 and a processing module 1302, and the communication module 1301 and the processing module 1302 are coupled with each other.
  • the communication device 1300 can be used to execute the steps executed by the terminal device 101 in the above method embodiments.
  • the communication module 1301 may be used to support the communication device 1300 to communicate, and the communication module 1301 may have a wireless communication function, for example, it can communicate with other communication devices through a wireless communication method.
  • the processing module 1302 can be used to support the communication device 1300 to perform the processing actions of the terminal device in the foregoing method embodiments, including but not limited to: generating information and messages sent by the communication module 1301, and/or performing processing on the signals received by the communication module 1301 Demodulation and decoding and so on.
  • the above communication module 1301 can be used to perform the sending and/or receiving actions of the terminal device in the first aspect and/or any possible design of the first aspect, such as Perform the action of sending information, message, or signaling from the terminal device to the network device, or perform the action of receiving information, message, or signaling from the network device.
  • the processing module 1302 can be used to perform the processing actions of the terminal device in any possible design of the first aspect and/or the first aspect, such as controlling the communication module 1301 to receive and send information, messages or signaling, And the storage of information and other operations.
  • the communication module 1301 may be used to receive first timing information from a network device, where the first timing information is used to indicate a first duration, and the first duration is the difference between two request messages sent by the terminal device.
  • the minimum time interval, each of the request messages is used to request to obtain a dedicated signaling system message carried by the terminal device.
  • the communication module 1301 may also be used to send a first message to the network device, where the first message is used to request to obtain a dedicated signaling system message carried on the terminal device.
  • the processing module 1302 may trigger the execution of the timing of the first duration when the first message is sent, or the processing module 1302 may receive the second message corresponding to the first message (or called for When responding to the second message of the first message), the execution of the timing of the first duration is triggered.
  • the communication module 1301 may send a third message, The third message is used to request to obtain a system message of dedicated signaling carried on the terminal device.
  • the processing module 1302 may trigger a first timer to start the timing of the first duration when sending the first message, or the processing module 1302 may trigger a second timer when sending the first message.
  • the timer restarts the counting of the first duration.
  • the first timer may be the same as or different from the second timer.
  • the above first message may be dedicated signaling of the terminal device.
  • the dedicated signaling can be scrambled by the dedicated identification of the terminal device.
  • the above first message may be carried by the signaling radio bearer.
  • the processing module 1302 may trigger a third timer to start the timing of the first duration when the terminal device receives the second message through the communication module 1301, or The processing module 1302 may trigger a fourth timer to restart the timing of the first duration when the terminal device receives the second message through the communication module 1301.
  • the third timer may be the same as or different from the fourth timer.
  • the third timer may be the same as or different from the above first timer and second timer, and the fourth timer may be the same or different from the above first timer and second timer.
  • the first message may be a first random access request message
  • the second message may be a first random access response message that only includes a random access preamble identifier
  • the second message is for the network device to address
  • the terminal device responds with the first message sent by Msg1.
  • the first random access request message may be a random access request message Msg1 in a four-step random access process.
  • the second message may be a random access response (RAR) message containing only a random access preamble identifier (RAP ID).
  • the first message may be random access uplink data
  • the second message may be a contention resolution message.
  • the first random access request message may be random access uplink data Msg3 in the four-step random access process.
  • the second message may be the contention resolution message Msg4 in the four-step random access process.
  • the first message may be a second random access request message
  • the second message may be a second random access response message.
  • the first random access request message may be a random access request message MsgA in a two-step random access process.
  • the second message may be the random access response message MsgB in the two-step random access process.
  • the above first message may include the identification of the terminal device and/or the system message list.
  • the identifier of the terminal device may be a cell-radio network temporary identifier (TC-RNTI) of the terminal device.
  • the identification of the terminal device can determine which terminal device initiates the system message acquisition request.
  • the system message list is used to indicate the system messages required by the terminal device.
  • the system message list may include one or more system information blocks (SIB) or one or more system messages. Among them, the system message block corresponds to the system message required by the terminal device 101 (in other words, one or more system message blocks may be mapped to system messages).
  • SIB system information blocks
  • the processing module 1302 may stop performing the timing of the first duration.
  • the processing module 1302 may suspend in the overlapped time period Execute the timing of the first duration.
  • the processing module 1302 can also maintain a counter. After each request message is sent, the processing module 1302 can perform a count of the counter.
  • the request message is used to request to obtain the dedicated signaling carried on the terminal device.
  • System message the request message includes the first message and/or the third message; the processing module 1302 may trigger the communication module 1301 to send a notification to the
  • the network device sends the handover assistance information, so that the network device 102 can switch the serving cell of the terminal device 101 according to the handover assistance information, so as to improve the transmission quality of the terminal device 101.
  • the handover assistance information is used for handover of the serving cell of the terminal device.
  • the above handover assistance information may be an indication of failure to obtain system information or an indication of timeout of obtaining system information, etc.
  • the handover assistance information can be used by the network equipment to determine whether to switch the serving cell of the terminal device.
  • the above counting threshold may be configured by the network device, or the counting threshold may be defined by a protocol or determined by a pre-configuration method.
  • the processing module 1302 may restore the count value of the counter to the initial value , There is no need to report handover auxiliary information at this time.
  • the terminal device may also include the structure shown in FIG. 14. It is easy to understand and easy to illustrate.
  • a mobile phone is taken as an example to illustrate the structure of the communication device 1400.
  • the communication device 1400 may include a processor 1401, a memory 1402, and a transceiver 1403.
  • the above processor 1401 may be used to process the communication protocol and communication data, and to control the second terminal device, execute the software program, process the data of the software program, and so on.
  • the memory 1402 may be used to store programs and data, and the processor 1401 may execute the method executed by the second terminal device in the embodiment of the present application based on the program.
  • the transceiver 1403 may include a radio frequency unit and an antenna.
  • the radio frequency unit can be used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals.
  • the antenna can be used to send and receive radio frequency signals in the form of electromagnetic waves.
  • the radio frequency unit may only be regarded as the transceiver 1403, then the communication device 1400 may include a processor 1401, a memory 1402, a transceiver 1403, and an antenna at this time.
  • the above communication module 701 may have the structure shown in the transceiver 1403, that is, including a radio frequency unit and an antenna; or, the communication module 701 may include the above radio frequency unit.
  • the above processing module 702 may include a processor 1401, or include a processor 1401 and a storage 1402.
  • the above communication device 1400 may also be constituted by a chip.
  • the chip includes a processor 1401.
  • the chip may also include a memory 1402 and a transceiver 1403, wherein any two of the memory 1402, the transceiver 1403, and the processor 1401 can be coupled to each other.
  • the transceiver 1403 can be used to execute the steps executed by the communication module 701 described above. And, the processor 1401 calls the program stored in the storage 1402 to execute the steps executed by the above processing module 702.
  • the processing device 1600 may include modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem.
  • the communication device in this embodiment can be used as the modulation subsystem therein.
  • the modulation subsystem may include a processor 1603 and an interface 1604.
  • the processor 1603 completes the function of the aforementioned processing module 1302, and the interface 1604 completes the function of the aforementioned communication module 1301.
  • the modulation subsystem includes a memory 1606, a processor 1603, and a program stored in the memory 1606 and running on the processor.
  • the processor 1603 implements the method of the processing module 1302 when the program is executed.
  • the memory 1606 can be non-volatile or volatile, and its location can be located inside the modulation subsystem or in the processing device 1600, as long as the memory 1606 can be connected to the The processor 1603 is fine.
  • a communication device may include a communication module 1701 and a processing module 1702, and the communication module 1701 and the processing module 1702 are coupled with each other.
  • the communication device 1700 can be used to perform the steps performed by the network device in the above method embodiments.
  • the communication module 1701 can be used to support the communication device 1700 to communicate, and the communication module 1701 can have a wireless communication function, for example, can communicate with other communication devices through wireless communication.
  • the processing module 1702 can be used to support the communication device 1700 to perform the processing actions of the terminal equipment in the foregoing method embodiments, including but not limited to: generating information and messages sent by the communication module 1701, and/or performing processing on the signals received by the communication module 1701 Demodulation and decoding and so on.
  • the processing module 1702 may be used to determine first timing information, where the first timing information is used to indicate a first duration, and the first duration is sent by the terminal device.
  • the communication module 1701 may be used to send the first timing information to the terminal device.
  • the above first timing information is carried in a broadcast message or dedicated signaling of the terminal device.
  • the communication module 1701 can also be used to receive handover assistance information from the terminal device, the handover assistance information is used for handover of the serving cell of the terminal device, and the processing module 1702 can be used to determine whether to handover the terminal according to the handover assistance information.
  • the serving cell of the device can also be used to receive handover assistance information from the terminal device, the handover assistance information is used for handover of the serving cell of the terminal device, and the processing module 1702 can be used to determine whether to handover the terminal according to the handover assistance information.
  • the serving cell of the device can also be used to receive handover assistance information from the terminal device, the handover assistance information is used for handover of the serving cell of the terminal device, and the processing module 1702 can be used to determine whether to handover the terminal according to the handover assistance information.
  • the serving cell of the device can also be used to receive handover assistance information from the terminal device, the handover assistance information is used for handover of the serving cell of the terminal device, and the processing module 1702 can be used to determine whether to hand
  • the communication device 1800 includes one or more remote radio units (RRU) 1810 and one or more baseband units (BBU) (also referred to as digital units, digital units, DU) 1820.
  • RRU remote radio units
  • BBU baseband units
  • the RRU 1810 may be referred to as a communication module, which corresponds to the communication module 1701 in FIG. 17, and is used to perform the above steps performed by the communication module 1701.
  • the RRU 1810 may also be called a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 1811 and a radio frequency unit 1812.
  • the RRU 1810 part is mainly used for sending and receiving of radio frequency signals and conversion of radio frequency signals and baseband signals, for example, for sending resource indications to terminal equipment.
  • the 1820 part of the BBU is mainly used for baseband processing, control of the base station, and so on.
  • the RRU 1810 and the BBU 1820 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 1820 is the control center of the base station, and may also be referred to as a processing module, which may correspond to the processing module 1702 in FIG. 17, and is used to perform the steps performed by the processing module 1702 above.
  • the BBU 1820 can also be used to perform baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, and so on.
  • the BBU 1820 may be used to control the network device to execute the operation procedure related to the network device in the foregoing method embodiment, for example, to generate the RRC message and the first information.
  • the BBU 1820 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network (such as an LTE network) of a single access standard, or can support different access standards. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 1820 also includes a memory 1821 and a processor 1822.
  • the memory 1821 is used to store necessary instructions and data.
  • the processor 1822 is used to control the network device to perform necessary actions, for example, to control the network device to execute the operation procedure executed by the CU and/or the CU in the foregoing method embodiment.
  • the above steps executed by the processing module 1702 may be executed by the processor 1822.
  • the memory 1821 and the processor 1822 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored.
  • the program When the program is executed by a processor, the computer executes the above method embodiment and method implementation. Examples of operations performed by a terminal device or a network device in any one of the possible implementation manners.
  • this application also provides a computer program product, which when invoked and executed by a computer, enables the computer to implement the above method embodiment and any possible implementation of the method embodiment The operation performed by the terminal device or network device in.
  • the present application also provides a chip or a chip system, and the chip may include a processor.
  • the chip may also include a memory (or storage module) and/or a transceiver (or communication module), or the chip may be coupled with a memory (or storage module) and/or a transceiver (or communication module), wherein the transceiver ( (Or communication module) can be used to support the chip for wired and/or wireless communication, the memory (or storage module) can be used to store a program, and the processor can call the program to implement any one of the above method embodiments and method embodiments.
  • the chip system may include the above chips, or may include the above chips and other discrete devices, such as a memory (or storage module) and/or a transceiver (or communication module).
  • the present application also provides a communication system, which may include the above terminal device and/or network device.
  • the communication system may be used to implement operations performed by a terminal device or a network device in any one of the foregoing method embodiments and method embodiments.
  • the communication system may have a structure as shown in FIG. 1.
  • the network device can be used to determine first timing information, where the first timing information is used to indicate a first duration, and the first duration is two times sent by the terminal device.
  • the network device may also send the first timing information to the terminal device.
  • the terminal device can receive the first timing information.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

一种通信方法及装置。该方法中，由网络设备确定并向终端装置发送第一定时信息，该第一定时信息用于指示第一时长，第一时长为终端装置前后两次向网络设备请求承载于专用信令的系统消息之间的最小时间间隔，因此明确了终端装置间隔多长时间可以再次请求获取承载于专用信令的系统消息，避免造成网络设备的负担过重。

Description

一种通信方法及装置 技术领域
本申请涉及通信技术领域，特别涉及一种通信方法及装置。
背景技术
目前新无线(new radio，NR)通信技术定义了系统消息(system information，SI)按需获取(on demand SI)的方法。UE得以请求网络设备将需要的系统消息通过广播或专用信令的方式发送给UE，实现系统消息的灵活发送。
在通过广播发送UE的系统消息的场景中，网络设备可在配置的SI时间窗内发送携带系统消息的广播消息，UE得以在该SI时间窗内通过广播接收系统消息。然而，针对网络设备通过UE的专用信令发送系统消息的场景，目前并未明确UE何时接收系统消息，UE可能短时间内向网络设备重复多次请求承载于专用信令的系统消息，给网络设备带来过大负担，使得UE基于该系统消息的通信受到阻碍。
综上，目前UE接收承载于专用信令的系统消息的方案有待优化。
发明内容
本申请提供一种通信方法及装置，以优化终端接收网络设备通过专用信令发送的系统消息的方案。
第一方面，本申请提供一种通信方法。该方法可由手机等终端装置或终端装置中的芯片执行。终端装置可从网络设备接收第一定时信息，所述第一定时信息用于指示第一时长，所述第一时长为所述终端装置发送的两个请求消息之间的最小时间间隔，每个所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息。
采用以上方法，可由网络设备向终端装置配置第一时长，该第一时长用于指示终端装置前后两次向网络设备请求承载于专用信令的系统消息之间的最小时间间隔，因此明确了终端装置间隔多长时间可以再次请求获取承载于专用信令的系统消息，避免造成网络设备的负担过重。
在一种可能的示例中，所述终端装置还可向所述网络设备发送第一消息，所述第一消息用于请求获取承载于所述终端装置的专用信令的系统消息。终端装置可在发送所述第一消息时触发执行所述第一时长的计时，或者，所述终端装置可在接收到用于回应所述第一消息的第二消息时触发执行所述第一时长的计时。在所述第一时长计时超时后，若所述终端装置未接收到所述网络设备通过所述终端装置的专用信令发送的系统消息，则所述终端装置可发送第三消息，所述第三消息用于请求获取承载于所述终端装置的专用信令的系统消息。
采用以上设计，可保证终端装置发送用于请求获取承载于所述终端装置的专用信令的系统消息的第一消息与第三消息之间的时间间隔不小于第一时长，可避免网络设备的负担过重。
在一种可能的示例中，所述终端装置可在发送所述第一消息时触发第一定时器启动所述第一时长的计时，或者，所述终端装置可在发送所述第一消息时触发第二定时器重新启 动所述第一时长的计时。其中，第一定时器可以与第二定时器相同或不同。
在该示例中，第一消息可以是所述终端装置的专用信令。专用信令可通过终端装置的专用标识加扰。此外，以上第一消息可承载于信令无线承载。
在另一种示例中，所述终端装置可在接收到所述第二消息时触发第三定时器启动所述第一时长的计时，或者，所述终端装置可在接收到所述第二消息时触发第四定时器重新启动所述第一时长的计时。应理解，第三定时器可以与第四定时器相同或不同。第三定时器可以与以上第一定时器、第二定时器相同或不同，第四定时器可以与以上第一定时器、第二定时器相同或不同。
在该另一示例中，所述第一消息可以是第一随机接入请求消息，所述第二消息可以是只包括随机接入前导标识的第一随机接入响应消息，该第二消息为网络设备针对终端装置通过Msg1发送的第一消息进行的响应。具体的，第一随机接入请求消息可以是四步随机接入过程中的随机接入请求消息Msg1。第二消息可以是只包含随机接入前导标识(RAP ID)的随机接入响应(random access response，RAR)消息。
或者，所述第一消息可以是随机接入上行数据，所述第二消息可以是竞争解决消息。具体的，第一随机接入请求消息可以是四步随机接入过程中的随机接入上行数据Msg3。第二消息可以是四步随机接入过程中的竞争解决消息Msg4。
或者，所述第一消息可以是第二随机接入请求消息，所述第二消息可以是第二随机接入响应消息。具体的，第一随机接入请求消息可以是两步随机接入过程中的随机接入请求消息MsgA。第二消息可以是两步随机接入过程中的随机接入响应消息MsgB。
以上第一消息可包括所述终端装置的标识和/或系统消息列表。其中，终端装置的标识可以是终端装置的小区无线网络临时标识(cell-radio network temporary identifier，TC-RNTI)。通过终端装置的标识能够确定发起系统消息获取请求的是哪个终端装置。系统消息列表用于指示所述终端装置需要的系统消息。系统消息列表可包括一个或多个系统消息块(system information block，SIB)或一个或多个系统消息。其中，系统消息块与终端装置101需要的系统消息之间对应(或者说，一个或多个系统消息块可以映射为系统消息)。
若终端装置从所述网络设备接收到承载于所述终端装置的专用信令的系统消息，则所述终端装置可停止执行所述第一时长的计时。
示例性的，当执行所述第一时长的计时的时间段与所述网络设备配置的测量间隔的时间段存在重叠的时间段时，终端装置可在所述重叠的时间段内暂停执行所述第一时长的计时。
此外，终端装置还可维护计数器，在每次发送请求消息后，终端装置可执行计数器的一次计数，所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息，所述请求消息可以包括所述第一消息和/或所述第三消息；所述终端装置可在所述计数器的计数值达到计数阈值后，向所述网络设备发送切换辅助信息，所述切换辅助信息用于所述终端装置的服务小区的切换。以上切换辅助信息可以是系统消息获取失败指示或者获取系统信息超时指示等。切换辅助信息可以用于网络设备判断是否切换终端装置的服务小区。
采用以上设计，当终端装置多次发送获取承载于专用信令的系统消息获取请求后，仍未接收到该系统消息，则处于连接态的终端装置会认为当前的服务小区不可用，从而上报切换辅助信息，以使网络设备可以根据切换辅助信息对终端装置的服务小区进行切换，以提高终端装置的传输质量。
以上计数阈值可由所述网络设备配置，或者，计数阈值可由协议定义或者通过预配置的方式确定。
示例性的，若终端装置从所述网络设备接收到承载于所述终端装置的专用信令的系统消息，则终端装置可将所述计数器的计数值恢复至初始值，此时无需上报切换辅助信息。
第二方面，本申请实施例提供一种通信方法。该方法可由网络设备或网络设备中的芯片执行。其中，网络设备可包括接入网设备，如基站等。包括由网络设备确定第一定时信息，所述第一定时信息用于指示第一时长，所述第一时长为所述终端装置发送的两个请求消息之间的最小时间间隔，每个所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息。网络设备可向所述终端装置发送所述第一定时信息。
以上第一定时信息可承载于广播消息或所述终端装置的专用信令。
所述网络设备还可从所述终端装置接收切换辅助信息，所述切换辅助信息用于所述终端装置的服务小区的切换，并根据所述切换辅助信息确定是否切换所述终端装置的服务小区。
第三方面，本申请实施例提供一种通信装置。该通信装置可用于执行上述第一方面或第一方面的任一可能的设计中由终端装置执行的步骤。该通信装置可通过硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各方法中的各功能或步骤或操作。比如，在通信装置中可以设置与上述各方法中的功能或步骤或操作相对应的功能模块来支持所述通信装置执行上述方法。
在通过软件模块实现第三方面所示通信装置时，该通信装置可包括相互耦合的通信模块以及处理模块，其中，通信模块可用于支持通信装置进行通信，处理模块可用于通信装置执行处理操作，如生成需要发送的信息/消息，或对接收的信号进行处理以得到信息/消息。
以上通信模块可用于执行第一方面和/或第一方面任意可能的设计中终端装置的发送和/或接收的动作，如用于执行终端装置向网络设备发送信息、消息或信令的动作，或用于执行从网络设备接收信息、消息或信令的动作。和/或，处理模块可用于执行第一方面和/或第一方面任意可能的设计中终端装置的处理动作，如用于控制通信模块进行信息、消息或信令的接收和或发送，以及信息的存储等操作。
示例性的，通信模块可用于从网络设备接收第一定时信息，所述第一定时信息用于指示第一时长，所述第一时长为所述终端装置发送的两个请求消息之间的最小时间间隔，每个所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息。
在一种可能的示例中，所述通信模块还可用于向所述网络设备发送第一消息，所述第一消息用于请求获取承载于所述终端装置的专用信令的系统消息。所述处理模块可在发送所述第一消息时触发执行所述第一时长的计时，或者，所述处理模块可在接收到用于回应所述第一消息的第二消息时触发执行所述第一时长的计时。在所述第一时长计时超时后，若所述终端装置未接收到所述网络设备通过所述终端装置的专用信令发送的系统消息，则所述通信模块可发送第三消息，所述第三消息用于请求获取承载于所述终端装置的专用信令的系统消息。
具体的，所述处理模块可在发送所述第一消息时触发第一定时器启动所述第一时长的计时，或者，所述处理模块可在发送所述第一消息时触发第二定时器重新启动所述第一时 长的计时。其中，第一定时器可以与第二定时器相同或不同。
以上第一消息可以是所述终端装置的专用信令。专用信令可通过终端装置的专用标识加扰。以上第一消息可承载于信令无线承载。
在另一种示例中，所述处理模块可在所述终端装置通过所述通信模块接收到所述第二消息时触发第三定时器启动所述第一时长的计时，或者，所述处理模块可在所述终端装置通过所述通信模块接收到所述第二消息时触发第四定时器重新启动所述第一时长的计时。应理解，第三定时器可以与第四定时器相同或不同。第三定时器可以与以上第一定时器、第二定时器相同或不同，第四定时器可以与以上第一定时器、第二定时器相同或不同。
该示例中，所述第一消息可以是第一随机接入请求消息，所述第二消息可以是只包括随机接入前导标识的第一随机接入响应消息，该第二消息为网络设备针对终端装置通过Msg1发送的第一消息进行的响应。具体的，第一随机接入请求消息可以是四步随机接入过程中的随机接入请求消息Msg1。第二消息可以是只包含随机接入前导标识(RAP ID)的随机接入响应(random access response，RAR)消息。
或者，所述第一消息可以是随机接入上行数据，所述第二消息可以是竞争解决消息。具体的，第一随机接入请求消息可以是四步随机接入过程中的随机接入上行数据Msg3。第二消息可以是四步随机接入过程中的竞争解决消息Msg4。
或者，所述第一消息可以是第二随机接入请求消息，所述第二消息可以是第二随机接入响应消息。具体的，第一随机接入请求消息可以是两步随机接入过程中的随机接入请求消息MsgA。第二消息可以是两步随机接入过程中的随机接入响应消息MsgB。
以上第一消息可包括所述终端装置的标识和/或系统消息列表。其中，终端装置的标识可以是终端装置的小区无线网络临时标识(cell-radio network temporary identifier，TC-RNTI)。通过终端装置的标识能够确定发起系统消息获取请求的是哪个终端装置。系统消息列表用于指示所述终端装置需要的系统消息。系统消息列表可包括一个或多个系统消息块(system information block，SIB)或一个或多个系统消息。其中，系统消息块与终端装置101需要的系统消息之间对应(或者说，一个或多个系统消息块可以映射为系统消息)。
若终端装置通过所述通信模块从所述网络设备接收到承载于所述终端装置的专用信令的系统消息，则所述处理模块可停止执行所述第一时长的计时。
示例性的，当执行所述第一时长的计时的时间段与所述网络设备配置的测量间隔的时间段存在重叠的时间段时，所述处理模块可在所述重叠的时间段内暂停执行所述第一时长的计时。
所述处理模块可维护计数器，在每次发送所述请求消息后，处理模块可执行计数器的一次计数，所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息，所述请求消息包括所述第一消息和/或所述第三消息；所述处理模块可在所述计数器的计数值达到计数阈值后，触发所述通信模块向所述网络设备送切换辅助信息以使网络设备可以根据切换辅助信息对终端装置的服务小区进行切换。以上切换辅助信息可以是系统消息获取失败指示或者获取系统信息超时指示等。切换辅助信息可以用于网络设备判断是否切换终端装置的服务小区。
以上计数阈值可由所述网络设备配置，或者，计数阈值可由协议定义或者通过预配置的方式确定。
示例性的，若终端装置通过所述通信模块从所述网络设备接收到承载于所述终端装置 的专用信令的系统消息，则处理模块可将所述计数器的计数值恢复至初始值，此时无需上报切换辅助信息。
在通过硬件组件实现第三方面所示通信装置时，该通信装置可包括处理器，用于执行上述第一方面和/或第一方面的任意可能的设计中由终端装置执行的步骤。该通信装置还可以包括存储器。其中，存储器可用于存储指令，处理器可用于从所述存储器中调用并运行所述指令，以执行上述第一方面和/或第一方面的任意可能的设计中由终端装置执行的步骤。该通信装置还可包括收发器，用于通信装置进行通信。
示例性的，收发器可用于执行第一方面和/或第一方面任意可能的设计中终端装置发送和/或接收的动作，如用于执行终端装置向网络设备发送信息、消息或信令的动作，或用于执行从网络设备接收信息、消息或信令的动作。和/或，处理器可用于执行第一方面和/或第一方面任意可能的设计中终端装置的处理动作，如用于控制收发器进行信息、消息或信令的接收和或发送，以及控制存储器进行信息的存储等。具体的，收发器可用于执行由以上第三方面所述通信模块执行的步骤。处理器可用于执行由以上第三方面所述处理模块执行的步骤。
第四方面，本申请实施例提供一种通信装置。该通信装置可用于执行上述第二方面或第二方面的任一可能的设计中由网络设备执行的步骤。该通信装置可通过硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各方法中的各功能或步骤或操作。比如，在通信装置中可以设置与上述各方法中的功能或步骤或操作相对应的功能模块来支持所述通信装置执行上述方法。
在通过软件模块实现第四方面所示通信装置时，该通信装置可包括相互耦合的通信模块以及处理模块，其中，通信模块可用于支持通信装置进行通信，处理模块可用于通信装置执行处理操作，如生成需要发送的信息/消息，或对接收的信号进行处理以得到信息/消息。
以上通信模块可用于执行第二方面和/或第二方面任意可能的设计中网络设备发送和/或接收的动作，如用于执行网络设备向终端装置发送信息、消息或信令的动作，或用于执行从终端装置接收信息、消息或信令的动作。和/或，处理模块可用于执行第二方面和/或第二方面任意可能的设计中网络设备的处理动作，如用于控制通信模块进行信息、消息或信令的接收和或发送，以及执行信息的存储等操作。
示例性的，处理模块可用于确定第一定时信息，所述第一定时信息用于指示第一时长，所述第一时长为所述终端装置发送的两个请求消息之间的最小时间间隔，每个所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息。通信模块可用于向所述终端装置发送所述第一定时信息。
以上第一定时信息承载于广播消息或所述终端装置的专用信令。
通信模块还可用于从所述终端装置接收切换辅助信息，所述切换辅助信息用于所述终端装置的服务小区的切换，处理模块可用于根据所述切换辅助信息确定是否切换所述终端装置的服务小区。
在通过硬件组件实现第四方面所示通信装置时，该通信装置可包括处理器，用于执行上述第二方面和/或第二方面的任意可能的设计中由网络设备执行的步骤。所述通信装置还可包括存储器。其中，存储器可用于存储指令，处理器可用于从所述存储器中调用并运行 所述指令，以执行上述第二方面和/或第二方面的任意可能的设计中由网络设备执行的步骤。该通信装置还可包括收发器，用于通信装置进行通信。
示例性的，收发器可用于执行第二方面和/或第二方面任意可能的设计中网络设备的发送和/或接收的动作，如用于执行网络设备向终端装置发送信息、消息或信令的动作，或用于执行从终端装置接收信息、消息或信令的动作。和/或，处理器可用于执行第二方面和/或第二方面任意可能的设计中网络设备的处理动作，如用于控制收发器进行信息、消息或信令的接收和或发送，以及控制存储器进行信息的存储等。具体的，收发器可用于执行由以上第四方面所述通信模块执行的步骤。处理器可用于执行由以上第四方面所述处理模块执行的步骤。
第五方面，本申请提供一种通信系统，该通信系统可以包括第三方面所示的通信装置以及第四方面所示的通信装置。其中，第三方面所示的通信装置可由软件模块和/或硬件组件构成。第四方面所示的通信装置可由软件模块和/或硬件组件构成。
以第三方面所示的通信装置为终端装置、第四方面所示的通信装置为网络设备为例，该网络设备可确定第一定时信息，所述第一定时信息用于指示第一时长，所述第一时长为所述终端装置发送的两个请求消息之间的最小时间间隔，每个所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息。网络设备可向所述终端装置发送所述第一定时信息。终端装置可接收该第一定时信息。
第六方面，本申请提供一种计算机存储介质，所述计算机存储介质中存储有指令(或称程序)，当其在计算机上被调用执行时，使得计算机执行上述第一方面或第一方面的任意一种可能的设计，或者第二方面或第二方面的任意一种可能的设计中所述的方法。
第七方面，本申请提供一种计算机程序产品，该计算机程序产品可包含指令，当所述计算机程序产品在计算机上运行时使得计算机执行上述第一方面或第一方面的任意一种可能的设计，或者第二方面或第二方面的任意一种可能的设计中所述的方法。
第八方面，本申请提供一种芯片和/或包含芯片的芯片系统，该芯片可包括处理器。该芯片还可以包括存储器(或存储模块)和/或收发器(或通信模块)。该芯片可用于执行上述第一方面或第一方面的任意一种可能的设计，或者第二方面或第二方面的任意一种可能的设计中所述的方法。该芯片系统可以由上述芯片构成，也可以包含上述芯片和其他分立器件，如存储器(或存储模块)和/或收发器(或通信模块)。
上述第二方面至第八方面及其可能的设计中的有益效果可以参考对第一方面及第一方面的可能的设计中所述方法的有益效果的描述。
附图说明
图1为本申请实施例提供的一种无线通信系统的架构示意图；
图2为本申请实施例提供的另一种无线通信系统的架构示意图；
图3为本申请实施例提供的四步随机接入过程的示意图；
图4为本申请实施例提供的两步随机接入过程的示意图；
图5为本申请实施例提供的一种通信方法的流程示意图；
图6为本申请实施例提供的一种执行第一时长的计时的示意图；
图7为本申请实施例提供的另一种执行第一时长的计时的示意图；
图8为本申请实施例提供的另一种通信方法的流程示意图；
图9为本申请实施例提供的另一种通信方法的流程示意图；
图10为本申请实施例提供的另一种通信方法的流程示意图；
图11为本申请实施例提供的另一种通信方法的流程示意图；
图12为本申请实施例提供的另一种通信方法的流程示意图；
图13为本申请实施例提供的一种通信装置的结构示意图；
图14为本申请实施例提供的另一种通信装置的结构示意图；
图15为本申请实施例提供的另一种通信装置的结构示意图；
图16为本申请实施例提供的另一种通信装置的结构示意图；
图17为本申请实施例提供的另一种通信装置的结构示意图；
图18为本申请实施例提供的另一种通信装置的结构示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述。方法实施例中的具体操作方法也可以应用于装置实施例或系统实施例中。
如图1所示，本申请实施例提供的通信方法可应用于无线通信系统100，该无线通信系统可以包括终端装置101以及网络设备102。
应理解，以上无线通信系统100既可适用于低频场景(sub 6G)，也可适用于高频场景(above6G)。无线通信系统100的应用场景包括但不限于长期演进(long term evolution，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、云无线接入网络(cloud radio access network，CRAN)系统、未来的第五代系统、新无线(new radio，NR)通信系统或未来的演进的公共陆地移动网络(public land mobile network，PLMN)系统等。
以上所示终端装置101可以是用户设备(user equipment，UE)、终端(terminal)、接入终端、终端单元、终端站、移动台(mobile station，MS)、远方站、远程终端、移动终端(mobile terminal)、无线通信设备、终端代理或终端设备等。该终端装置101可具备无线收发功能，其能够与一个或多个通信系统的一个或多个网络设备进行通信(如无线通信)，并接受网络设备提供的网络服务，这里的网络设备包括但不限于图示网络设备102。
其中，终端装置101可以是蜂窝电话、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、个人数字处理(personal digital assistant，PDA)设备、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、未来5G网络中的终端装置或者未来演进的PLMN网络中的终端装置等。
另外，终端装置101可以部署在陆地上，包括室内或室外、手持或车载；终端装置101也可以部署在水面上(如轮船等)；终端装置101还可以部署在空中(例如飞机、气球和卫星上等)。所述终端装置101具体可以是手机(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)中的无线终端等。终端装置101也可以是具有通信模块的通信芯片，也可以是具有通信功能的车辆，或者车载设备(如车载通信装置，车载通信芯片)等。
网络设备102可以是接入网设备(或称接入网站点)。其中，接入网设备是指有提供网络接入功能的设备，如无线接入网(radio access network，RAN)基站等等。网络设备102具体可包括基站(base station，BS)，或包括基站以及用于控制基站的无线资源管理设备等。该网络设备102还可包括中继站(中继设备)、接入点以及未来5G网络中的基站、未来演进的PLMN网络中的基站或者NR基站等。网络设备102可以是可穿戴设备或车载设备。网络设备102也可以是具有通信模块的通信芯片。
比如，网络设备102包括但不限于：5G中的下一代基站(g nodeB，gNB)、LTE系统中的演进型节点B(evolved node B，eNB)、无线网络控制器(radio network controller，RNC)、CRAN系统下的无线控制器、基站控制器(base station controller，BSC)、家庭基站(例如，home evolved nodeB，或home node B，HNB)、基带单元(baseBand unit，BBU)、传输点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)或移动交换中心等。网络设备102还可包括未来6G或更新的移动通信系统中的基站。
下面以如图2所示5G网络架构为例，说明本申请实施例可以应用的一种无线通信系统。
如图2所示的无线通信系统可包括5G核心网201，该无线通信系统还可包括5G接入网202，其中5G核心网201与5G接入网202之间可通过接口实现交互。该无线通信系统场景下，用于实现本申请实施例所涉及的方法的功能实体可以是5G核心网201中的网元和/或终端装置等。具体来说，以上图1所示的终端装置101可以包括5G接入网202中的基站所连接的终端装置，例如，图2所示的UE 203。该UE 203通过无线链路连接至接入网设备204，接入网设备204可以是5G接入网202中的一个5G基站。以上图1所示的终端装置101可包括与中继站连接的UE，例如图2所示的UE 205。其中，UE 205与中继站206连接，中继站206通过中继链路连接至接入网设备204。以上图1所示的网络设备102，可包括如图2所示的5G接入网202的中的接入网设备204，也可以是如图2所示的连接至接入网设备204的中继站206等等。
下面，结合图2所示系统介绍四步随机接入(4-step random access channel，RACH)和两步随机接入(2-step RACH)流程，终端装置101可在四步随机接入或两步随机接入流程中向网络设备102请求承载于专用信令的系统消息。
如图3所示，四步随机接入过程可包括以下步骤：
S11：终端装置向网络设备发送Msg1(后续可称为第一随机接入请求消息)。
其中，Msg1即随机接入请求，包括随机接入前导(preamble)码(或称前导码、preamble前导码)，随机接入前导码可以是终端装置随机选择的，终端装置在RACH上向网络设备发送Msg1。
相应地，网络设备接收来自终端装置的Msg1。
S12，网络设备向终端装置发送Msg2(以下可称为第一随机接入响应消息)。
此处，Msg2即是针对前导码的随机接入响应(random access response，RAR)信息，包括保留比特(reserved bits，通常用R表示)、定时提前(timing advance，TA)命令、上行授权(uplinkgrant)和临时小区无线网络临时标识(temporary cell-radio network temporary identifier，TC-RNTI)等。其中，上行授权即网络设备为该终端装置分配的上行资源位置的指示信息，TC-RNTI为网络设备为终端装置分配的一个临时小区无线网络临时标识。
相应地，终端装置接收来自网络设备的Msg2。终端装置可以在PDCCH上使用RA-RNTI来监听调度承载Msg2的PDSCH的DCI。
S13，终端装置向网络设备发送Msg3(以下可称为随机接入上行数据)。
其中，Msg3即上行数据或称上行有效载荷(UL payload)，Msg3承载于物理层上行共享信道(PUSCH)。后续为方便说明，可将S13所涉及的Msg3称为上行数据。此处，终端装置在发送Msg3后，立即启动竞争解决计时器(contention resolution timer)(后续每次重传Msg3都要重启这个定时器)，终端装置在定时器超时前监听网络设备返回给自己的竞争解决消息。
示例性的，上行数据可包括上行小包数据，如终端装置的标识等数据。
相应地，网络设备接收来自终端装置的Msg3。
S14，网络设备向终端装置发送Msg4(以下可称为竞争解决消息)。
其中，Msg4即竞争解决消息(contention resolution message，CRM)。
此处，网络设备在向终端装置发送竞争解决消息时，当终端装置处于RRC空闲(RRC idle)态或者RRC非活跃(RRC inactive)态，可采用TC-RNTI对DCI进行加扰。终端在竞争解决计时器超时前，如果监听到该TC-RNTI加扰的DCI，则对DCI指示的承载于PDSCH上的响应信息进行解调，并对PDSCH中携带的竞争解决标识(contention resolution identifier，CRID)与终端装置的Msg3携带的公共控制信道的服务数据单元(common control channel serving data unit，CCCH SDU)进行匹配，如果相同，终端装置认为竞争解决成功。否则，终端装置认为这次随机接入失败。
示例性的，终端装置可通过以上图3所示的四步随机接入过程，向网络设备请求承载于专用信令的系统消息。具体的，终端装置101可在以上Msg1和/或Msg3中携带需要的系统消息的标识，网络设备102在接收到携带需要的系统消息的标识的Msg1和/或Msg3后，可通过终端装置101的专用信令向终端装置101发送其需要的系统消息。
如图4所示，为一种两步随机接入方法流程示意图。该两步随机接入方法包括以下步骤：
S21，终端装置向网络设备发送MsgA(以下可称为第二随机接入请求消息)。
其中，MsgA即随机接入请求，包括随机接入前导码和UL payload，相当于上述图4的4-step RACH中的Msg1和Msg3。
S22，网络设备向终端装置发送MsgB(以下可称为第二随机接入响应消息)。
此处，MsgB即针对MsgA的响应信息，包括针对前导码的响应信息和针对PUSCH的响应信息中的至少一种。针对随机接入前导码的响应信息即随机接入响应信息，包括TA命令、TC-RNTI以及UL grant。针对PUSCH的响应信息包括竞争解决消息，如包括CRID。
需要说明的是，在目前2步随机接入过程中，网络设备在向处于RRC idle态或者RRC inactive态的终端装置发送竞争解决标识时可能采用的方式是：网络设备采用一个公共RNTI对DCI加扰。基于该方式，终端装置需要对接收到的DCI指示的PDSCH进行解调，得到PDSCH承载的响应信息中携带的CRID，与UE标识(identifier，ID)或者UL CCCH SDU比较后，才能确认竞争解决是否成功。
示例性的，终端装置可通过以上图4所示的两步随机接入过程，向网络设备请求承载于专用信令的系统消息。具体的，终端装置101可在以上MsgA中携带需要的系统消息的标识，网络设备102在接收到携带需要的系统消息的标识的MsgA后，可通过终端装置101 的专用信令向终端装置101发送其需要的系统消息。
另外，终端装置101也可通过专用信令向网络设备102发送请求消息，该请求消息中可携带终端装置101需要的系统消息的标识，以请求网络设备102通过终端装置101的专用信令向终端装置101发送其需要的系统消息。
通过以上方法，终端装置101可向网络设备102请求承载于专用信令的系统消息，由于目前并未限制终端装置101前后两次向网络设备请求承载于专用信令的系统消息之间的时间间隔，短时间内的多次请求可能会给网络设备102带来过重的负担。
为了优化网络设备102通过专用信令向终端装置101发送系统消息的方案，本申请实施例提供了一种通信方法。如图5所示，该通信方法可包括以下步骤：
S31：网络设备102确定第一定时信息，所述第一定时信息用于指示第一时长。该第一时长为终端装置101发送的两个请求消息之间的最小时间间隔，每个请求消息用于请求获取承载于终端装置101的专用信令的系统消息。
在请求承载于所述终端装置的专用信令的系统消息过程中，终端装置101可向网络设备102发送请求消息，并在请求消息中携带终端装置101的标识和/或终端装置101请求的系统消息列表。所述系统消息列表可用于指示终端装置101需要的系统消息。
具体的，系统消息列表可包括一个或多个系统消息块(system information block，SIB)或一个或多个系统消息。其中，系统消息块与终端装置101需要的系统消息之间对应(或者说，一个或多个系统消息块可以映射为系统消息)。比如，SIB3/SIB4/SIB5周期相同，那么他们可以映射成一个系统消息。应理解，以上这里的系统消息列表指一个或多个系统消息，其可以具备列表的形式，也可以不具备列表的形式，而只是通过多个一个或多个系统消息表示。
应理解，本申请所述请求消息可包括终端装置101发送的专用信令，或包括终端装置101在随机接入过程中发送的Msg1、Msg3或MsgA。
S32：网络设备102向终端装置101发送第一定时信息。
S33：终端装置101从网络设备102接收第一定时信息。
采用以上方式，可由网络设备102向终端装置101配置第一时长，该第一时长用于指示终端装置101前后两次向网络设备102请求承载于专用信令的系统消息的时间间隔，因此明确了终端装置101间隔多长时间可以再次请求获取承载于专用信令的系统消息。
在本申请实施例中，终端装置101的专用信令是指专用于终端装置101的信令，如专用于终端装置101的无线资源控制(radio resource control，RRC)信令。具体的，专用信令可以是RRC重配置(reconfiguration)信令或专用于系统消息发送的独立RRC消息。
示例性的，专用信令可通过终端装置101的专用标识加扰，以表示为终端装置101所专用。终端装置101的专用标识可以是终端装置101的小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)。或者，终端装置101的专用标识可以是配置调度无线网络临时标识(configured scheduling RNTI，CS-RNTI)或者调制与编码策略无线网络临时标识(modulation and coding scheme RNTI，MCS-RNTI)等网络为终端装置101分配的能唯一标识终端装置101的标识。
示例性的，终端装置101可在向网络设备102发送请求消息后执行第一时长的计时，在计时超时后，若终端装置101未从网络设备102接收到承载于终端装置101的专用信令的系统消息，则终端装置101可再次向网络设备102请求该系统消息。
应理解，本申请中所述“执行第一时长的计时”，可包括启动定时器并令定时器执行第一时长的计时，或包括重新启动(或称重新执行)定时器并令定时器执行第一时长的计时。其中，重新启动是指已经在执行第一时长计时的定时器将计时时长归零，并再次执行第一时长的计时，例如，第一时长为60毫秒(ms)，若定时器已经执行10ms的计时，则终端装置101可触发该定时器重新执行60ms的计时。
在一种具体的示例中，终端装置101可向网络设备102发送第一消息，所述第一消息可用于请求承载于终端装置101的专用信令的系统消息。终端装置101可在发送第一消息时触发执行第一时长的计时。在所述第一时长计时超时后，若终端装置101未接收到网络设备102通过终端装置101的专用信令发送的系统消息，则终端装置101可向网络设备102发送第三消息，所述第三消息用于请求该系统消息。示例性的，第一消息和第三消息可以与请求获取相同的系统消息，例如，第一消息以及第三消息中携带系统的系统消息列表，以指示相同的系统消息。
其中，该第一消息例如终端装置101发送的专用信令，该专用信令可通过终端装置101的专用标识加扰。该专用信令可承载于信令无线承载(signalling radio bearer，SRB)，如承载于SRB1、SRB2或SRB3。第三消息可包括终端装置101发送的专用信令，或终端装置101在随机接入过程中发送的Msg1、Msg3或MsgA。以上请求消息包括该第一消息和/或第三消息。
另外，终端装置101可在发送第一消息之后的第一偏移时长触发执行第一时长的计时。其中，第一偏移时长可由网络设备102通过广播或终端装置101的专用信令配置，或者，可由协议或通过预配置的方式确定。
在另一种可能的设计中，终端装置101可在接收到用于回应第一消息的第二消息时触发执行第一时长的计时。在所述第一时长计时超时后，若终端装置101未接收到网络设备102通过终端装置101的专用信令发送的系统消息，则终端装置101可向网络设备102发送第三消息，所述第三消息用于请求该系统消息。示例性的，第二消息中可携带请求响应，以表示网络设备102接收到第一消息。
其中，该第一消息例如终端装置101在随机接入过程中发送的Msg1、Msg3或MsgA。示例性的，当第一消息为Msg1时，第二消息可以是包括(或仅包括)随机接入preamble ID(RAP ID)的RAR消息，该RAR消息为网络设备102针对承载于Msg1的系统消息请求所发送的响应消息。当第一消息为Msg3时，第二消息可以是Msg4。当第一消息为MsgA时，第二消息可以是MsgB。
以上第三消息可包括终端装置101发送的专用信令，或终端装置101在随机接入过程中发送的Msg1、Msg3或MsgA。以上请求消息包括该第一消息和/或第三消息。示例性的，第一消息和第三消息可以与请求获取相同的系统消息，例如，第一消息以及第三消息中携带系统的系统消息列表，以指示相同的系统消息。
另外，终端装置101可在接收到第二消息之后的第二偏移时长触发执行第一时长的计时。其中，第二偏移时长可由网络设备102通过广播或终端装置101的专用信令配置，或者，可由协议或通过预配置的方式确定。具体的，第二消息可以是包括RAP ID的RAR消息、Msg4或者MsgB，针对以上不同的第二消息，第二偏移时长可以相同或不同。
终端装置101还可在发送以上第三消息时触发执行第一时长的计时，或者在接收到用于回应以上第三消息的第四消息时触发执行第一时长的计时。在所述第一时长计时超时后， 若终端装置101未接收到网络设备102通过终端装置101的专用信令发送的系统消息，则终端装置101可再次向网络设备102发送请求消息(如，称为第五消息)，所述第五消息用于请求获取该系统消息。该第五消息的设置方式可参照第三消息。应理解，参照以上说明，终端装置101在发送第五消息后还可以再次或多次发送请求消息，直到达到最大请求次数或收到该系统消息。其中，最大请求次数可以由网络设备通过广播发送或通过专用信令进行配置，或者由协议定义或者通过预配置的方式确定。
具体的，当第三消息为Msg1时，第四消息可以是包括RAP ID的RAR消息。当第三消息为Msg3时，第四消息可以是Msg4。当第三消息为MsgA时，第四消息可以是MsgB。
示例性的，在执行第一时长的计时中，若终端装置101接收到来自于网络设备102的承载于专用信令的系统消息，则终端装置101可停止第一时长的计时。这里所述停止第一时长的计时，可以是指终端装置101控制执行第一时长的计时的定时器归零，并控制该定时器不再继续计时，或者，是指终端装置101控制执行第一时长的计时的定时器不再继续计时。应理解，终端装置101接收到系统消息，可以是指终端装置101接收并解析来自网络设备102的专用信令，以获取专用信令所承载的系统消息。
具体的，终端装置101接收的承载于专用信令的系统消息可以与终端装置101需要的系统消息一致，或者，终端装置101接收的承载于专用信令的系统消息可包括终端装置101需要的系统消息。
例如图6所示，以第一消息为终端装置101发送的专用信令为例，当终端装置101在t0时刻发送第一消息时，终端装置101开始执行第一时长的计时。若终端装置101在t1时刻从网络设备102接收到承载于终端装置101的专用信令的系统消息，则终端装置101可从t1时刻停止第一时长的计时。在第一时长的计时超时(计时超时的时刻为t2)后，若终端装置101仍未接收到承载于专用信令的系统消息，终端装置101可在t3时刻发送第三消息，再次请求获取该系统消息，并且，终端装置101从t3时刻再次执行第一时长的计时。
可选地，当终端装置101发送的用于请求相同系统消息的请求消息的数量达到(或超过)计数阈值(如3，或者其他值)，且终端装置101未接收到网络设备102通过专用信令发送的该系统消息，则终端装置101可向网络设备102发送切换辅助信息，以使网络设备102可以根据切换辅助信息对终端装置101的服务小区进行切换，以提高终端装置101的传输质量。应理解，该计数阈值可由网络设备102通过广播或专用信令配置，或者可以由协议定义或者可通过预配置的方式确定。
以上切换辅助信息可以是系统消息获取失败指示、获取系统信息超时指示等。切换辅助信息可以承载在测量报告中。网络设备102可在接收到切换辅助信息后，根据切换辅助信息判断是否切换终端装置101的服务小区。
在一种可能的示例中，终端装置101还可维护计数器(counter)，该计数器的计数结果可表示终端装置101发送的用于请求相同系统消息的请求消息的数量。该计数器的计数值可由初始值(如0)开始累加。示例性的，终端装置101在每次发送用于请求相同的系统消息的请求消息后，控制计数器执行一次计数。例如，终端装置101在发送以上第一消息或第三消息后，控制计数器执行一次计数。当该计数器的计数结果达到(或超过)以上计数阈值，且终端装置101仍未接收到网络设备102通过专用信令发送的系统消息，则终端装置101可向网络设备102发送切换辅助信息，以使网络设备102可以根据切换辅助信息对终端装置101的服务小区进行切换。
另外，当终端装置101接收到来自于网络设备102的承载于专用信令的系统消息，则终端装置101可将该计数器的计数值恢复至初始值，如0。
示例性的，网络设备102可向终端装置101配置测量间隔(measurement gap)，终端装置101在测量间隔期间不会发送和接收任何信令或数据。当终端装置101执行第一时长的计时时间段与网络设备配置的测量间隔的时间段存在重叠的时间段时，终端装置101在该重叠的时间段暂停执行第一时长的计时。如图7所示，若第一时长的计时时间段与测量间隔的时间段存在重叠，则终端装置101可在测量间隔的时间段开始时控制用于执行第一时长的计时的定时器暂停计时，并在测量间隔的时间段结束时控制该定时器继续计时，使得该定时器在暂停计时之前以及暂停计时之后总共执行第一时长的计时。
如图8所示，当第一消息为终端装置101的专用信令时，本申请实施例提供的一种通信方法可包括以下步骤：
S41：网络设备102配置第一定时信息。第一定时信息用于指示第一时长。
S42：网络设备102向终端装置101发送第一定时信息。相应地，终端装置101接收第一定时信息。
S43：终端装置101向网络设备102发送专用信令，并触发执行第一时长的计时。
该专用信令可用于请求获取承载于终端装置101的专用信令的系统消息。具体的，该专用信令可携带系统消息列表。专用信令还可携带终端装置101的标识。
应理解，终端装置101可在发送该专用信令的同时触发执行第一时长的计时，或发送专用信令后的第一偏移时长触发执行第一时长的计时。
若终端装置101在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息，则执行S44-S45所示步骤：
S44：终端装置101确定在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息。
S45：终端装置101停止执行第一时长的计时。
若终端装置101未在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息，则执行S46-S47所示步骤：
S46：终端装置101确定第一时长的计时超时，且未接收到来自网络设备102的承载于终端装置101的专用信令的系统消息。
S47：终端装置101向网络设备102发送第三消息，该第三消息可用于请求获取承载于终端装置101的专用信令的系统消息。示例性的，第三消息可与第一消息相同或不同。
如图9所示，当第一消息为Msg1时，本申请实施例提供的一种通信方法可包括以下步骤：
S51：网络设备102配置第一定时信息。第一定时信息用于指示第一时长。
S52：网络设备102向终端装置101发送第一定时信息。相应地，终端装置101接收第一定时信息。
S53：终端装置101向网络设备102发送Msg1。Msg1可用于请求获取承载于终端装置101的专用信令的系统消息。具体的，该Msg1可携带系统消息列表。Msg1还可携带终端装置101的标识。
S54：终端装置101从网络设备102接收携带由RAP ID的RAR消息，并执行第一时长的计时。其中，该RAR消息可携带请求响应。
应理解，终端装置101可在接收到该RAR消息的同时触发执行第一时长的计时，或在接收到RAR消息后的第二偏移时长触发执行第一时长的计时。
若终端装置101在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息，则执行S55-S56所示步骤：
S55：终端装置101在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息。
S56：终端装置101停止执行第一时长的计时。
若终端装置101未在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息，则执行S57-S58所示步骤：
S57：终端装置101确定第一时长的计时超时，且未接收到来自网络设备102的承载于终端装置101的专用信令的系统消息。
S58：终端装置101向网络设备102发送第三消息，该第三消息可用于请求获取承载于终端装置101的专用信令的系统消息。示例性的，第三消息可与第一消息相同或不同。
如图10所示，当第一消息为Msg3时，本申请实施例提供的一种通信方法可包括以下步骤：
S61：网络设备102配置第一定时信息。第一定时信息用于指示第一时长。
S62：网络设备102向终端装置101发送第一定时信息。相应地，终端装置101接收第一定时信息。
S63：终端装置101向网络设备102发送Msg3。Msg3可用于请求获取承载于终端装置101的专用信令的系统消息。具体的，该Msg3可携带系统消息列表。Msg3还可携带终端装置101的标识。
S64：终端装置101从网络设备102接收Msg4，并执行第一时长的计时。其中，该Msg4可携带请求响应。
应理解，终端装置101可在接收到该Msg4消息的同时触发执行第一时长的计时，或在接收到Msg4消息后的第二偏移时长触发执行第一时长的计时。
若终端装置101在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息，则执行S65-S66所示步骤：
S65：终端装置101在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息。
S66：终端装置101停止执行第一时长的计时。
若终端装置101未在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息，则执行S67-S68所示步骤：
S67：终端装置101确定第一时长的计时超时，且未接收到来自网络设备102的承载于终端装置101的专用信令的系统消息。
S68：终端装置101向网络设备102发送第三消息，该第三消息可用于请求获取承载于终端装置101的专用信令的系统消息。示例性的，第三消息可与第一消息相同或不同。
如图11所示，当第一消息为MsgA时，本申请实施例提供的一种通信方法可包括以下步骤：
S71：网络设备102配置第一定时信息。第一定时信息用于指示第一时长。
S72：网络设备102向终端装置101发送第一定时信息。相应地，终端装置101接收 第一定时信息。
S73：终端装置101向网络设备102发送MsgA。MsgA可用于请求获取承载于终端装置101的专用信令的系统消息。具体的，该MsgA可携带系统消息列表。MsgA还可携带终端装置101的标识。
S74：终端装置101从网络设备102接收MsgB，并执行第一时长的计时。其中，该MsgB可携带请求响应。
应理解，终端装置101可在接收到该MsgB消息的同时触发执行第一时长的计时，或在接收到MsgB消息后的第二偏移时长触发执行第一时长的计时。
若终端装置101在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息，则执行S75-S76所示步骤：
S75：终端装置101在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息。
S76：终端装置101停止执行第一时长的计时。
若终端装置101未在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息，则执行S77-S78所示步骤：
S77：终端装置101确定第一时长的计时超时，且未接收到来自网络设备102的承载于终端装置101的专用信令的系统消息。
S78：终端装置101向网络设备102发送第三消息，该第三消息可用于请求获取承载于终端装置101的专用信令的系统消息。示例性的，第三消息可与第一消息相同或不同。
如图12所示，本申请实施例还提供一种通信方法，令终端装置101根据自身发送请求消息的次数上报切换辅助信息。该方法可包括以下步骤：
S801：网络设备102配置阈值信息，所述阈值信息用于指示计数阈值。
S802：网络设备102向终端装置101发送阈值信息。相应地，终端装置101接收阈值信息。
S803：终端装置101向网络设备102发送第一请求。
该第一请求可用于请求获取承载于终端装置101的专用信令的系统消息。具体的，该第一请求可携带系统消息列表。第一请求还可携带终端装置101的标识。
S804：终端装置101控制计数器执行一次计数。
若终端装置101接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息，则执行S805-S806所示步骤：
S805：终端装置101确定在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息。
S806：终端装置101将计数器的计数恢复为初始值。
若终端装置101未在第一时长的计时超时前接收到所述网络设备102发送的承载于终端装置101的专用信令的系统消息，则执行S807-S808所示步骤：
S807：终端装置101确定第一时长的计时超时，且未接收到来自网络设备102的承载于终端装置101的专用信令的系统消息。
S808：终端装置101向网络设备102发送第三消息，并控制计数器执行一次计数。
该第三消息可用于请求获取承载于终端装置101的专用信令的系统消息。示例性的，第三消息可与第一消息相同或不同。
应理解，终端装置101可在发送第三消息时再次触发第一时长的计时，若在第一时长的计时超时前仍未接收到来自网络设备102的承载于终端装置101的专用信令的系统消息，则终端装置101可再次发送第三消息，并再次触发第一时长的计时以及控制计数器执行一次计数。
若终端装置101确定计数器的计数达到(或超过)计数阈值，则执行S809-S811所示步骤：
S809：确定计数器的计数达到(或超过)计数阈值。
应理解，终端装置101在确定计数器的计数达到(或超过)计数阈值之前，可以一次或多次发送第三消息，具体次数与计数阈值的取值有关。
S810：终端装置101向网络设备102发送切换辅助信息。该切换辅助信息用于网络设备102用于终端装置101的服务小区的切换。具体的，切换辅助信息可包括系统消息获取失败指示或获取系统信息超时指示。相应地，网络设备102接收切换辅助信息。
S811：网络设备102根据切换辅助信息判断是否切换终端装置101的服务小区。网络设备102判断是否切换终端装置101的小区的方式，以及切换终端装置101的服务小区的方式，可参照现有技术，本申请不与具体限定。
上述本申请提供的实施例中，从终端装置所实现的功能的角度对本申请实施例提供的方法即方法流程进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，终端装置可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
如图13所示，本申请实施例提供的一种通信装置可以包括通信模块1301以及处理模块1302，以上通信模块1301以及处理模块1302之间相互耦合。该通信装置1300可用于执行以上方法实施例中由终端装置101执行的步骤。该通信模块1301可用于支持通信装置1300进行通信，通信模块1301可具备无线通信功能，例如能够通过无线通信方式与其他通信装置进行通信。处理模块1302可用于支持该通信装置1300执行上述方法实施例中终端设备的处理动作，包括但不限于：生成由通信模块1301发送的信息、消息，和/或，对通信模块1301接收的信号进行解调解码等等。
在执行上述方法实施例中由终端装置执行的步骤时，以上通信模块1301可用于执行第一方面和/或第一方面任意可能的设计中终端装置的发送和/或接收的动作，如用于执行终端装置向网络设备发送信息、消息或信令的动作，或用于执行从网络设备接收信息、消息或信令的动作。和/或，处理模块1302可用于执行第一方面和/或第一方面任意可能的设计中终端装置的处理动作，如用于控制通信模块1301进行信息、消息或信令的接收和或发送，以及信息的存储等操作。
示例性的，通信模块1301可用于从网络设备接收第一定时信息，所述第一定时信息用于指示第一时长，所述第一时长为所述终端装置发送的两个请求消息之间的最小时间间隔，每个所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息。
在一种可能的示例中，所述通信模块1301还可用于向所述网络设备发送第一消息，所述第一消息用于请求获取承载于所述终端装置的专用信令的系统消息。所述处理模块1302可在发送所述第一消息时触发执行所述第一时长的计时，或者，所述处理模块1302可在接收到所述第一消息对应的第二消息(或称用于回应所述第一消息的第二消息)时触 发执行所述第一时长的计时。在所述第一时长计时超时后，若所述终端装置未接收到所述网络设备通过所述终端装置的专用信令发送的系统消息，则所述通信模块1301可发送第三消息，所述第三消息用于请求获取承载于所述终端装置的专用信令的系统消息。
具体的，所述处理模块1302可在发送所述第一消息时触发第一定时器启动所述第一时长的计时，或者，所述处理模块1302可在发送所述第一消息时触发第二定时器重新启动所述第一时长的计时。其中，第一定时器可以与第二定时器相同或不同。
以上第一消息可以是所述终端装置的专用信令。专用信令可通过终端装置的专用标识加扰。
以上第一消息可承载于信令无线承载。
在另一种示例中，所述处理模块1302可在所述终端装置通过所述通信模块1301接收到所述第二消息时触发第三定时器启动所述第一时长的计时，或者，所述处理模块1302可在所述终端装置通过所述通信模块1301接收到所述第二消息时触发第四定时器重新启动所述第一时长的计时。应理解，第三定时器可以与第四定时器相同或不同。第三定时器可以与以上第一定时器、第二定时器相同或不同，第四定时器可以与以上第一定时器、第二定时器相同或不同。
该示例中，所述第一消息可以是第一随机接入请求消息，所述第二消息可以是只包括随机接入前导标识的第一随机接入响应消息，该第二消息为网络设备针对终端装置通过Msg1发送的第一消息进行的响应。具体的，第一随机接入请求消息可以是四步随机接入过程中的随机接入请求消息Msg1。第二消息可以是只包含随机接入前导标识(RAP ID)的随机接入响应(random access response，RAR)消息。
或者，所述第一消息可以是随机接入上行数据，所述第二消息可以是竞争解决消息。具体的，第一随机接入请求消息可以是四步随机接入过程中的随机接入上行数据Msg3。第二消息可以是四步随机接入过程中的竞争解决消息Msg4。
或者，所述第一消息可以是第二随机接入请求消息，所述第二消息可以是第二随机接入响应消息。具体的，第一随机接入请求消息可以是两步随机接入过程中的随机接入请求消息MsgA。第二消息可以是两步随机接入过程中的随机接入响应消息MsgB。
以上第一消息可包括所述终端装置的标识和/或系统消息列表。其中，终端装置的标识可以是终端装置的小区无线网络临时标识(cell-radio network temporary identifier，TC-RNTI)。通过终端装置的标识能够确定发起系统消息获取请求的是哪个终端装置。系统消息列表用于指示所述终端装置需要的系统消息。系统消息列表可包括一个或多个系统消息块(system information block，SIB)或一个或多个系统消息。其中，系统消息块与终端装置101需要的系统消息之间对应(或者说，一个或多个系统消息块可以映射为系统消息)。
若终端装置通过所述通信模块1301从所述网络设备接收到承载于所述终端装置的专用信令的系统消息，则所述处理模块1302可停止执行所述第一时长的计时。
示例性的，当执行所述第一时长的计时的时间段与所述网络设备配置的测量间隔的时间段存在重叠的时间段时，所述处理模块1302可在所述重叠的时间段内暂停执行所述第一时长的计时。
此外，所述处理模块1302还可维护计数器，在每次发送所述请求消息后，处理模块1302可执行计数器的一次计数，所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息，所述请求消息包括所述第一消息和/或所述第三消息；所述处理模块1302 可在所述计数器的计数值达到计数阈值后，触发所述通信模块1301向所述网络设备发送切换辅助信息，以使网络设备102可以根据切换辅助信息对终端装置101的服务小区进行切换，以提高终端装置101的传输质量。所述切换辅助信息用于所述终端装置的服务小区的切换。以上切换辅助信息可以是系统消息获取失败指示或者获取系统信息超时指示等。切换辅助信息可以用于网络设备判断是否切换终端装置的服务小区。
以上计数阈值可由所述网络设备配置，或者，计数阈值可由协议定义或者通过预配置的方式确定。
示例性的，若终端装置通过所述通信模块1301从所述网络设备接收到承载于所述终端装置的专用信令的系统消息，则处理模块1302可将所述计数器的计数值恢复至初始值，此时无需上报切换辅助信息。
终端装置还可包括如图14所示结构。便于理解和图示方便，图14中，以手机为例说明该通信装置1400的结构。如图14所示，通信装置1400可包括处理器1401、存储器1402以及收发器1403。
以上处理器1401可用于对通信协议以及通信数据进行处理，以及对第二终端装置进行控制，执行软件程序，处理软件程序的数据等。存储器1402可用于存储程序和数据，处理器1401可基于该程序执行本申请实施例中由第二终端装置执行的方法。
收发器1403可包括射频单元以及天线。其中，射频单元可用于基带信号与射频信号的转换以及对射频信号的处理。天线可用于收发电磁波形式的射频信号。另外，也可仅将射频单元视为收发器1403，则此时通信装置1400可包括处理器1401、存储器1402、收发器1403以及天线。
另外，该通信装置1400还可包括输入输出装置1404，如触摸屏、显示屏或者键盘等可用于接收用户输入的数据以及对用户输出数据的组件。需要说明的是，有些种类的通信装置可以不具有输入输出装置。
应理解，以上通信模块701可具备收发器1403所示结构，即包括射频单元以及天线；或者，通信模块701可包括以上射频单元。以上处理模块702可包括处理器1401，或包括处理器1401以及储存器1402。
以上通信装置1400也可由芯片构成。例如，该芯片包含处理器1401。另外，该芯片还可包括存储器1402以及收发器1403，其中，存储器1402、收发器1403以及处理器1401三者中，任意两者之间可相互耦合。
在执行本申请实施例所示方法时，该收发器1403可用于执行上述通信模块701执行的步骤。以及，由处理器1401调用储存器1402中存储的程序，执行以上处理模块702所执行的步骤。
本实施例中的通信装置为终端装置时，其结构还可参照图15所示的设备。作为一个例子，该设备可以完成类似于图14中处理器1401的功能。在图15中，该设备包括处理器1510，发送数据处理器1520，接收数据处理器1530。上述实施例中的处理模块1302可以是图15中的该处理器1510，并完成相应的功能。上述实施例中的通信模块1301可以是图15中的发送数据处理器1520，和/或接收数据处理器1530。虽然图15中示出了信道编码器、信道解码器，但是可以理解这些模块并不对本实施例构成限制性说明，仅是示意性的。
图16示出本实施例的另一种形式。处理装置1600中可包括调制子系统、中央处理子 系统、周边子系统等模块。本实施例中的通信装置可以作为其中的调制子系统。具体的，该调制子系统可以包括处理器1603，接口1604。其中处理器1603完成上述处理模块1302的功能，接口1604完成上述通信模块1301的功能。作为另一种变形，该调制子系统包括存储器1606、处理器1603及存储在存储器1606上并可在处理器上运行的程序，该处理器1603执行该程序时实现上述处理模块1302的方法。需要注意的是，所述存储器1606可以是非易失性的，也可以是易失性的，其位置可以位于调制子系统内部，也可以位于处理装置1600中，只要该存储器1606可以连接到所述处理器1603即可。
如图17所示，本申请实施例提供的一种通信装置可以包括通信模块1701以及处理模块1702，以上通信模块1701以及处理模块1702之间相互耦合。该通信装置1700可用于执行以上方法实施例中由网络设备执行的步骤。该通信模块1701可用于支持通信装置1700进行通信，通信模块1701可具备无线通信功能，例如能够通过无线通信方式与其他通信装置进行通信。处理模块1702可用于支持该通信装置1700执行上述方法实施例中终端设备的处理动作，包括但不限于：生成由通信模块1701发送的信息、消息，和/或，对通信模块1701接收的信号进行解调解码等等。
在执行上述方法实施例中由网络设备执行的步骤时，处理模块1702可用于确定第一定时信息，所述第一定时信息用于指示第一时长，所述第一时长为所述终端装置发送的两个请求消息之间的最小时间间隔，每个所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息。通信模块1701可用于向所述终端装置发送所述第一定时信息。
以上第一定时信息承载于广播消息或所述终端装置的专用信令。
通信模块1701还可用于从所述终端装置接收切换辅助信息，所述切换辅助信息用于所述终端装置的服务小区的切换，处理模块1702可用于根据所述切换辅助信息确定是否切换所述终端装置的服务小区。
另外，当本实施例中的通信装置为网络设备时，该通信装置可以具备如图18所示结构。其中，通信装置1800包括一个或多个远端射频单元(remote radio unit,RRU)1810和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)1820。所述RRU 1810可以称为通信模块，与图17中的通信模块1701对应，用于执行以上由通信模块1701执行的步骤。该RRU 1810还可以称为收发机、收发电路、或者收发器等等，其可以包括至少一个天线1811和射频单元1812。所述RRU 1810部分主要用于射频信号的收发以及射频信号与基带信号的转换，例如用于向终端设备发送资源指示。所述BBU 1820部分主要用于进行基带处理，对基站进行控制等。所述RRU 1810与BBU 1820可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。
所述BBU 1820为基站的控制中心，也可以称为处理模块，可以与图17中的处理模块1702对应，用于执行以上由处理模块1702执行的步骤。BBU 1820还可用于完成基带处理功能，如信道编码，复用，调制，扩频等等。例如所述BBU 1820可以用于控制网络设备执行上述方法实施例中关于网络设备的操作流程，例如，生成RRC消息以及第一信息等。
在一个示例中，所述BBU 1820可以由一个或多个单板构成，多个单板可以共同支持单一接入制式的无线接入网(如LTE网)，也可以分别支持不同接入制式的无线接入网(如LTE网，5G网或其他网)。所述BBU 1820还包括存储器1821和处理器1822。所述存储器1821用以存储必要的指令和数据。所述处理器1822用于控制网络设备进行必要的动作，例如用于控制网络设备执行上述方法实施例中由CU和/或CU执行的操作流程。
示例性的，可由处理器1822执行以上由处理模块1702执行的步骤。所述存储器1821和处理器1822可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。
基于与上述方法实施例相同构思，本申请实施例中还提供一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时，使该计算机执行上述方法实施例、方法实施例的任意一种可能的实现方式中由终端装置或者网络设备执行的操作。
基于与上述方法实施例相同构思，本申请还提供一种计算机程序产品，该计算机程序产品在被计算机调用执行时，可以使得计算机实现上述方法实施例、方法实施例的任意一种可能的实现方式中由终端装置或者网络设备执行的操作。
基于与上述方法实施例相同构思，本申请还提供一种芯片或芯片系统，该芯片可包括处理器。该芯片还可包括存储器(或存储模块)和/或收发器(或通信模块)，或者，该芯片与存储器(或存储模块)和/或收发器(或通信模块)耦合，其中，收发器(或通信模块)可用于支持该芯片进行有线和/或无线通信，存储器(或存储模块)可用于存储程序，该处理器调用该程序可用于实现上述方法实施例、方法实施例的任意一种可能的实现方式中由终端装置或者网络设备执行的操作。该芯片系统可包括以上芯片，也可以包含上述芯片和其他分立器件，如存储器(或存储模块)和/或收发器(或通信模块)。
基于与上述方法实施例相同构思，本申请还提供一种通信系统，该通信系统可包括以上终端装置和/或网络设备。该通信系统可用于实现上述方法实施例、方法实施例的任意一种可能的实现方式中由终端装置或者网络设备执行的操作。示例性的，该通信系统可具有如图1所示结构。
以通信系统包括终端装置及网络设备为例，该网络设备可用于确定第一定时信息，所述第一定时信息用于指示第一时长，所述第一时长为所述终端装置发送的两个请求消息之间的最小时间间隔，每个所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息。网络设备还可向所述终端装置发送所述第一定时信息。相应地，终端装置可接收该第一定时信息。
本申请实施例是参照实施例所涉及的方法、装置、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。

Claims (24)

  1. 一种通信方法，其特征在于，包括：
    终端装置从网络设备接收第一定时信息，所述第一定时信息用于指示第一时长，所述第一时长为所述终端装置发送的两个请求消息之间的最小时间间隔，每个所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息。
  2. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    所述终端装置向所述网络设备发送第一消息，所述第一消息用于请求获取承载于所述终端装置的专用信令的系统消息；
    所述终端装置在发送所述第一消息时触发执行所述第一时长的计时，或者，所述终端装置在接收到用于回应所述第一消息的第二消息时触发执行所述第一时长的计时；
    在所述第一时长计时超时后，若所述终端装置未接收到所述网络设备通过所述终端装置的专用信令发送的系统消息，则所述终端装置发送第三消息，所述第三消息用于请求获取承载于所述终端装置的专用信令的系统消息。
  3. 如权利要求2所述的方法，其特征在于，所述终端装置在发送所述第一消息时触发执行所述第一时长的计时，包括：
    所述终端装置在发送所述第一消息时触发第一定时器启动所述第一时长的计时；或者，
    所述终端装置在发送所述第一消息时触发第二定时器重新启动所述第一时长的计时。
  4. 如权利要求2或3所述的方法，其特征在于，所述第一消息为所述终端装置的专用信令。
  5. 如权利要求4所述的方法，其特征在于，所述第一消息承载于信令无线承载。
  6. 如权利要求2所述的方法，其特征在于，所述终端装置在接收到用于回应所述第一消息的第二消息时触发执行所述第一时长的计时，包括：
    所述终端装置在接收到所述第二消息时触发第三定时器启动所述第一时长的计时；或者，
    所述终端装置在接收到所述第二消息时触发第四定时器重新启动所述第一时长的计时。
  7. 如权利要求2或6所述的方法，其特征在于，所述第一消息为第一随机接入请求消息，所述第二消息为只包括随机接入前导标识的第一随机接入响应消息；或者，
    所述第一消息为随机接入上行数据，所述第二消息为竞争解决消息；或者，
    所述第一消息为第二随机接入请求消息，所述第二消息为第二随机接入响应消息。
  8. 如权利要求2-7中任一所述的方法，其特征在于，所述第一消息包括所述终端装置的标识和/或系统消息列表，所述系统消息列表用于指示所述终端装置需要的系统消息。
  9. 如权利要求2-8中任一所述的方法，其特征在于，所述方法还包括：
    所述终端装置从所述网络设备接收到承载于所述终端装置的专用信令的系统消息；
    所述终端装置停止执行所述第一时长的计时。
  10. 如权利要求2-9中任一所述的方法，其特征在于，当执行所述第一时长的计时的时间段与所述网络设备配置的测量间隔的时间段存在重叠的时间段时，所述方法还包括：
    所述终端装置在所述重叠的时间段内暂停执行所述第一时长的计时。
  11. 如权利要求2-10中任一所述的方法，其特征在于，所述方法还包括：
    所述终端装置在每次发送所述请求消息后，执行计数器的一次计数，所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息，所述请求消息包括所述第一消息和/或所述第三消息；
    所述终端装置在所述计数器的计数值达到计数阈值后，向所述网络设备发送切换辅助信息，所述切换辅助信息用于所述终端装置的服务小区的切换。
  12. 如权利要求11所述的方法，其特征在于，所述计数阈值由所述网络设备配置。
  13. 如权利要求11或12所述的方法，其特征在于，所述方法还包括：
    所述终端装置从所述网络设备接收到承载于所述终端装置的专用信令的系统消息；
    所述终端装置将所述计数器的计数值恢复至初始值。
  14. 一种通信方法，其特征在于，包括：
    网络设备确定第一定时信息，所述第一定时信息用于指示第一时长，所述第一时长为所述终端装置发送的两个请求消息之间的最小时间间隔，每个所述请求消息用于请求获取承载于所述终端装置的专用信令的系统消息；
    所述网络设备向所述终端装置发送所述第一定时信息。
  15. 如权利要求14所述的方法，其特征在于，所述第一定时信息承载于广播消息或所述终端装置的专用信令。
  16. 如权利要求14或15所述的方法，其特征在于，所述方法还包括：
    所述网络设备从所述终端装置接收切换辅助信息，所述切换辅助信息用于所述终端装置的服务小区的切换；
    所述网络设备根据所述切换辅助信息确定是否切换所述终端装置的服务小区。
  17. 一种通信装置，其特征在于，包括通信模块以及处理模块，所述通信模块用于所述通信装置的通信，所述处理模块用于基于所述通信模块执行如权利要求1-13中任一所述的方法。
  18. 一种通信装置，其特征在于，包括通信模块以及处理模块，所述通信模块用于所述通信装置的通信，所述处理模块用于基于所述通信模块执行如权利要求14-16中任一所述的方法。
  19. 一种通信装置，其特征在于，包括处理器，所述处理器用于执行存储于存储器的指令，以实现权利要求1-13中任一项所述的方法。
  20. 一种通信装置，其特征在于，包括处理器，所述处理器用于执行存储于存储器的指令，以实现权利要求14-16中任一项所述的方法。
  21. 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存储有指令，所述指令被处理器执行时实现如权利要求1-13中任一项所述的方法，或者，所述指令被处理器执行时实现如权利要求14-16中任一项所述的方法。
  22. 一种包含指令的计算机程序产品，其特征在于，当其在计算机上运行时，使得计算机执行如权利要求1-13中任一项所述的方法，或者，使得计算机执行如权利要求14-16中任一项所述的方法。
  23. 一种通信系统，其特征在于，包括如权利要求17或19所述的通信装置，以及包括如权利要求18或20所述的通信装置。
  24. 一种芯片，其特征在于，所述芯片与收发器耦合，所述芯片用于执行如权利要求1-13中任一项所述的方法，或者，所述芯片用于执行如权利要求14-16中任一项所述的方 法。
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VIVO: "Failure Handling for On Demand SI Acquisition Procedure", 3GPP DRAFT; R2-1804593_FAILURE HANDLING FOR ON DEMAND SI ACQUISITION PROCEDURE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Sanya, China; 20180416 - 20180420, 14 April 2018 (2018-04-14), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051428312 *

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