WO2021204016A1 - 通信方法以及通信装置 - Google Patents

通信方法以及通信装置 Download PDF

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Publication number
WO2021204016A1
WO2021204016A1 PCT/CN2021/083866 CN2021083866W WO2021204016A1 WO 2021204016 A1 WO2021204016 A1 WO 2021204016A1 CN 2021083866 W CN2021083866 W CN 2021083866W WO 2021204016 A1 WO2021204016 A1 WO 2021204016A1
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WO
WIPO (PCT)
Prior art keywords
information
network device
time information
indication information
time
Prior art date
Application number
PCT/CN2021/083866
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English (en)
French (fr)
Inventor
陈磊
李秉肇
谢宗慧
于海凤
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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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP21785414.0A priority Critical patent/EP4132131A4/en
Publication of WO2021204016A1 publication Critical patent/WO2021204016A1/zh
Priority to US17/959,343 priority patent/US20230029283A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/003—Arrangements to increase tolerance to errors in transmission or reception timing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
    • H04W56/006—Synchronisation arrangements determining timing error of reception due to propagation delay using known positions of transmitter and receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • This application relates to the field of communication, and more specifically, to a communication method and a communication device.
  • the time synchronization of the receiving and transmitting equipment is the basis for ensuring normal communication.
  • communication equipment such as high-precision positioning services, services with low latency requirements, and applications in various vertical industries, such as vehicles Internet, industrial Internet, artificial intelligence, etc.
  • accurate time information can ensure the reliability of communication, thereby ensuring the safe driving of vehicles or production safety in the industrial Internet.
  • existing communication systems such as fourth generation (4 th generation, 4G) mobile communication systems
  • the fifth generation (5 th generation, 5G) mobile communication system serving a network device timing for the terminal through a system message.
  • network devices of different versions can provide terminal devices with different time accuracy.
  • the terminal device When a terminal device of a higher version is connected to a network device of a lower version, the terminal device can only obtain the time of the connected network device of the lower version. Information, which makes it impossible for terminal equipment to perform services that require higher time accuracy. How to enable communication equipment to obtain more accurate time information is a hot topic for those skilled in the art.
  • the present application provides a communication method and a communication device, in order to be able to obtain more high-precision time information, thereby improving the reliability of communication.
  • a communication method is provided, which can be executed by a terminal device or a module (such as a chip) configured in (or used for) the terminal device.
  • the following takes the method executed by the terminal device as an example for description.
  • the method includes: receiving first information from a first network device, the first information is used to indicate that the second network device has first time information, the first time information includes coordinated universal time UTC information, and global positioning system GPS time information Or at least one of local time information; receiving the first time information from the second network device according to the first information.
  • the accuracy of the first time information is higher than the accuracy of the second time information
  • the second time information is the time information of the first network device.
  • the first information is used to instruct the terminal device to acquire the first time information of the second network device.
  • the terminal device can receive time information from other network devices through the instruction of the first network device with which it establishes a wireless connection, so that the terminal device can obtain time information with higher precision, thereby improving the reliability of communication.
  • the terminal device is simultaneously connected to the first network device and the second network device in a dual connection manner
  • the first network device is the main network device (for example, the main base station)
  • the second network device is the auxiliary network Equipment (for example, secondary base station).
  • the terminal device can receive the time information from the secondary network device through an instruction with the main network device, so that the terminal device can obtain time information with higher precision, thereby improving the reliability of communication.
  • the first information further includes one or more of the following information:
  • the first indication information is used to indicate the first resource that carries the first time information
  • the second indication information is used to indicate whether the second network device broadcasts the first time information on the first resource
  • the third indication information, the third indication information is configuration information of the request message, and the request message is used to request the first time information.
  • the fourth indication information is used to indicate the identity of the second network device and/or the identity of the cell served by the second network device.
  • the fifth indication information is used to indicate that the first time information is received through dedicated signaling
  • the sixth indication information is used to indicate to request the first time information from the second network device through dedicated signaling.
  • the first network device provides the terminal device with auxiliary information for receiving the first time information through the first information, so that the terminal device can receive the first time information from the second network device, so that the terminal device can obtain higher information. Accurate time information, thereby improving the reliability of communication.
  • the first information includes scheduling information of at least one system message of the second network device, and the scheduling information includes the first indication information and/or the second Indication information, the first system message in the at least one system message includes the first time information.
  • the second network device sends the first time information through a system message, and the first information provides the terminal device with scheduling information of the system message, so that the terminal device can receive the first time information from the second network device, This enables the terminal device to obtain more precise time information, thereby improving the reliability of communication.
  • the first information includes second indication information
  • the receiving the first time information from the second network device according to the first information includes: When the indication result of the second indication information is "Yes", the first time information of the second network device is received.
  • the second indication information in the first information instructs the second network device to send the first time information, for example, periodically sends or sends the first time information on the first resource indicated by the first indication information .
  • the terminal device can receive the first time information from the second network device. This enables the terminal device to obtain more precise time information, thereby improving the reliability of communication.
  • the method further includes: sending third information to the second network device, where the third The information is used to request the first time information, and the third information is carried in the message 3 of the random access procedure.
  • the second indication information in the first information indicates that the second network device does not periodically send or actively send the first time information
  • the terminal device can initiate a random access procedure, and send a message to the second network device in message 3.
  • the network device sends request information to request the second network device to send the first time information. This enables the terminal device to obtain more precise time information, thereby improving the reliability of communication.
  • the method further includes: 2.
  • the network device sends third information, where the third information is used to request the first time information, and the third information is carried in the message 3 of the random access procedure.
  • the second indication information in the first information indicates that the second network device does not periodically send or actively send the first time information, and the first information does not configure the resource of the request message for the terminal device
  • the terminal device may initiate a random access procedure, and send request information to the second network device in message 3 to request the second network device to send the first time information. This enables the terminal device to obtain more precise time information, thereby improving the reliability of communication.
  • the result indicated by the second indication information is "No"
  • the first information includes the third indication information
  • the method further includes: according to the third indication information
  • the instruction information sends fourth information, and the fourth information is the request message.
  • the second indication information in the first information indicates that the second network device does not periodically send or actively send the first time information
  • the first information configures the terminal device with resources for sending the request message
  • the terminal device may use the resource sending request message configured by the third indication information to request the second network device to send the first time information. This enables the terminal device to obtain more precise time information, thereby improving the reliability of communication.
  • the third indication information includes configuration information of a random access channel RACH resource and/or configuration information of a preamble, and the request message is sent to the RACH resource.
  • the preamble includes configuration information of a random access channel RACH resource and/or configuration information of a preamble
  • the dedicated resource for the request message configured by the third indication information for the terminal device may be the resource of message 1, including the RACH resource and the preamble.
  • the terminal device may generate message 1 according to the configuration of the third indication information to request the second
  • the network device sends the first time information. This enables the terminal device to obtain more precise time information, thereby improving the reliability of communication.
  • the method further includes: sending fifth information, where the fifth information is used to request the first time information.
  • the fifth information is carried in the signaling radio bearer 1.
  • the terminal device can send a request message to the first network device through the wireless signaling bearer 1, so that the first network device can notify the second network device of the request message of the first network device after receiving the request message.
  • the first time information enables the terminal device to obtain more precise time information, thereby improving the reliability of communication.
  • the fifth information is carried in the signaling radio bearer 3.
  • the terminal device can send a request message to the second network device through the wireless signaling bearer 3 to request the second network device to send the first time information, so that the terminal device can obtain time information with higher accuracy, thereby improving Reliability of communication.
  • a communication method is provided, which can be executed by a first network device or a module (such as a chip) configured (or used for) the first network device.
  • the method is executed by the first network device as Examples are explained.
  • the method includes: receiving sixth information from a second network device, the sixth information is used to indicate that the second network device has first time information, or the sixth information is used to indicate the first time information of the second network device
  • the accuracy of the time information is higher than the accuracy of the second time information of the first network device, where the first time information includes at least one of coordinated universal time UTC information, global positioning system GPS time information or local time information;
  • the device sends first information, and the first information is used to indicate that the second network device has the first time information.
  • the sixth information and/or the first information includes one or more of the following information:
  • the first indication information is used to indicate the first resource that carries the first time information
  • the second indication information is used to indicate whether the second network device broadcasts the first time information on the first resource
  • the third indication information, the third indication information is configuration information of the request message, and the request message is used to request the first time information.
  • the fourth indication information is used to indicate the identity of the second network device and/or the identity of the cell served by the second network device.
  • the fifth indication information is used to indicate that the first time information is received through dedicated signaling
  • the sixth indication information is used to indicate to request the first time information from the second network device through dedicated signaling.
  • the first information includes scheduling information of at least one system message of the second network device, and the scheduling information includes the first indication information and/or the second Indication information, the first system message in the at least one system message includes the first time information.
  • the third indication information includes configuration information of a random access channel RACH resource and/or configuration information of a preamble, and the request message is sent to the RACH resource.
  • the preamble includes configuration information of a random access channel RACH resource and/or configuration information of a preamble
  • the method further includes:
  • the fifth information is carried in the signaling radio bearer 1.
  • a communication method is provided, which can be executed by a second network device or a module (such as a chip) configured (or used for) the second network device.
  • the method is executed by the second network device as Examples are explained.
  • the method includes: sending sixth information to a first network device, where the sixth information is used to indicate that the second network device has first time information, or the sixth information is used to indicate the first time of the second network device
  • the accuracy of the information is higher than the accuracy of the second time information of the first network device, where the first time information includes at least one of coordinated universal time UTC information, global positioning system GPS time information or local time information; Send this first time message.
  • the sixth information further includes one or more of the following information:
  • the first indication information is used to indicate the first resource that carries the first time information
  • the second indication information is used to indicate whether the second network device broadcasts the first time information on the first resource
  • the third indication information, the third indication information is configuration information of the request message, and the request message is used to request the first time information.
  • the fourth indication information is used to indicate the identity of the second network device and/or the identity of the cell served by the second network device.
  • the fifth indication information is used to indicate that the first time information is received through dedicated signaling
  • the sixth indication information is used to indicate to request the first time information from the second network device through dedicated signaling.
  • the sixth information includes the first indication information
  • the sending of the first time information to the terminal device includes:
  • the first information includes scheduling information of at least one system message of the second network device, and the scheduling information includes the first indication information and/or the second Indication information, the first system message in the at least one system message includes the first time information.
  • the first information includes second indication information
  • sending the first time information to the terminal device includes:
  • the first time information is sent to the terminal device.
  • the method further includes:
  • the result indicated by the second indication information is "No"
  • the first information includes the third indication information
  • the method further includes:
  • the third indication information includes configuration information of a random access channel RACH resource and/or configuration information of a preamble, and the request message is sent to the RACH resource.
  • the preamble includes configuration information of a random access channel RACH resource and/or configuration information of a preamble
  • the method further includes:
  • the fifth information is carried in the signaling radio bearer 3.
  • a communication device is provided.
  • the device is, for example, a terminal device or a chip in the terminal device, and includes a transceiver unit for receiving first information from a first network device, where the first information is used for Indicates that the second network device has first time information, the first time information includes at least one of coordinated universal time UTC information, global positioning system GPS time information, or local time information; The first time information of the device; the transceiver unit is further configured to receive the first time information from the second network device according to the first information.
  • the accuracy of the first time information is higher than the accuracy of the second time information
  • the second time information is the time information of the first network device.
  • the first information further includes one or more of the following information:
  • the first indication information is used to indicate the first resource that carries the first time information
  • the second indication information is used to indicate whether the second network device broadcasts the first time information on the first resource
  • the third indication information, the third indication information is configuration information of the request message, and the request message is used to request the first time information.
  • the fourth indication information is used to indicate the identity of the second network device and/or the identity of the cell served by the second network device.
  • the fifth indication information is used to indicate that the first time information is received through dedicated signaling
  • the sixth indication information is used to indicate to request the first time information from the second network device through dedicated signaling.
  • the first information includes scheduling information of at least one system message of the second network device, and the scheduling information includes the first indication information and/or the second Indication information, the first system message in the at least one system message includes the first time information.
  • the first information includes second indication information
  • the transceiver unit is specifically configured to:
  • the first time information of the second network device is received.
  • the result indicated by the second indication information is "No"
  • the transceiver unit is further configured to send third information to the second network device, where the first The third information is used to request the first time information, and the third information is carried in the message 3 of the random access procedure.
  • the result indicated by the second indication information is "No"
  • the first information includes the third indication information
  • the transceiver unit is further configured to The third instruction information sends fourth information
  • the fourth information is the request message.
  • the third indication information includes random access channel RACH resource configuration information and/or preamble configuration information, and the request message is sent to the RACH resource.
  • the preamble includes random access channel RACH resource configuration information and/or preamble configuration information
  • the transceiver unit is further configured to send fifth information, and the fifth information is used to request the first time information.
  • the fifth information is carried on the signaling radio bearer 1, or the fifth information is carried on the signaling radio bearer 3.
  • a communication device is provided.
  • the device is, for example, a first network device or a chip in the first network device, and includes a transceiver unit for receiving sixth information from a second network device.
  • Sixth information is used to indicate that the second network device has first time information, or the sixth information is used to indicate that the accuracy of the first time information of the second network device is higher than that of the second time information of the first network device Accuracy, where the first time information includes at least one of coordinated universal time UTC information, global positioning system GPS time information or local time information;
  • a processing unit configured to generate first information according to the sixth information, where the first information is used to indicate that the second network device has the first time information;
  • the transceiver unit is also used to send the first information to the terminal device.
  • the sixth information and/or the first information includes one or more of the following information:
  • the first indication information is used to indicate the first resource that carries the first time information
  • the second indication information is used to indicate whether the second network device broadcasts the first time information on the first resource
  • the third indication information, the third indication information is configuration information of the request message, and the request message is used to request the first time information.
  • the fourth indication information is used to indicate the identity of the second network device and/or the identity of the cell served by the second network device.
  • the fifth indication information is used to indicate that the first time information is received through dedicated signaling
  • the sixth indication information is used to indicate to request the first time information from the second network device through dedicated signaling.
  • the first information includes scheduling information of at least one system message of the second network device, and the scheduling information includes the first indication information and/or the second Indication information, the first system message in the at least one system message includes the first time information.
  • the third indication information includes random access channel RACH resource configuration information and/or preamble configuration information, and the request message is sent to the RACH resource.
  • the preamble includes random access channel RACH resource configuration information and/or preamble configuration information
  • the transceiver unit is further configured to receive fifth information from the terminal device, where the fifth information is used to indicate a request for the first time information;
  • the transceiver unit is further configured to send seventh information to the second network device, where the seventh information is used to instruct the terminal device to request the first time information.
  • the fifth information is carried in the signaling radio bearer 1.
  • a communication device is provided.
  • the device is, for example, a second network device or a chip in the second network device, and includes a processing unit configured to generate sixth information, and the sixth information is used to indicate the
  • the second network device has first time information, or the sixth information is used to indicate that the accuracy of the first time information of the second network device is higher than the accuracy of the second time information of the first network device.
  • the time information includes at least one of coordinated universal time UTC information, global positioning system GPS time information, or local time information; the transceiver unit sends sixth information to the first network device; the transceiver unit is also used to send the first network device One time information.
  • the sixth information further includes one or more of the following information:
  • the first indication information is used to indicate the first resource that carries the first time information
  • the second indication information is used to indicate whether the second network device broadcasts the first time information on the first resource
  • the third indication information, the third indication information is configuration information of the request message, and the request message is used to request the first time information.
  • the fourth indication information is used to indicate the identity of the second network device and/or the identity of the cell served by the second network device.
  • the fifth indication information is used to indicate that the first time information is received through dedicated signaling
  • the sixth indication information is used to indicate to request the first time information from the second network device through dedicated signaling.
  • the sixth information includes the first indication information, and the transceiver unit is specifically configured to send the first time information on the first resource.
  • the first information includes scheduling information of at least one system message of the second network device, and the scheduling information includes the first indication information and/or the second Indication information, the first system message in the at least one system message includes the first time information.
  • the first information includes second indication information
  • the indication result of the second indication information is "yes”
  • the transceiver unit is further configured to send the terminal device to the terminal device.
  • the first time information is
  • the transceiver unit is further configured to receive third information from the terminal device, where the third information Used to request the first time information, and the third information is carried in the message 3 of the random access procedure.
  • the result indicated by the second indication information is "No"
  • the first information includes the third indication information
  • the transceiver unit is further configured to receive The fourth information of the device, where the fourth information is the request message.
  • the third indication information includes configuration information of a random access channel RACH resource and/or configuration information of a preamble, and the request message is sent to the RACH resource.
  • the preamble includes configuration information of a random access channel RACH resource and/or configuration information of a preamble
  • the transceiver unit is further configured to receive fifth information from the terminal device, and the fifth information is used to request the first time information.
  • the fifth information is carried in the signaling radio bearer 3.
  • a communication device including a processor. It can be used to execute instructions in the memory to implement the foregoing first aspect and the method in any one of the possible implementation manners of the first aspect.
  • the communication device further includes a memory, and the processor is coupled with the memory.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication device is a terminal device.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in a terminal device.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a communication device including a processor. It can be used to execute instructions in the memory to implement the foregoing second aspect and the method in any one of the possible implementation manners of the second aspect.
  • the communication device further includes a memory, and the processor is coupled with the memory.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication device is a first network device.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in the first network device.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a communication device including a processor. It can be used to execute instructions in the memory to implement the third aspect and the method in any one of the possible implementation manners of the third aspect.
  • the communication device further includes a memory, and the processor is coupled with the memory.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication device is a second network device.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in the second network device.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a processor including: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any one of the first aspect to the third aspect and any one of the first aspect to the third aspect .
  • the above-mentioned processor can be one or more chips
  • the input circuit can be an input pin
  • the output circuit can be an output pin
  • the processing circuit can be a transistor, a gate circuit, a flip-flop, and various logic circuits, etc.
  • the input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver
  • the signal output by the output circuit may be, for example, but not limited to, output to the transmitter and transmitted by the transmitter
  • the circuit can be the same circuit, which is used as an input circuit and an output circuit at different times.
  • the embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.
  • a communication device including a processor and a memory.
  • the processor is used to read instructions stored in the memory, and can receive signals through a receiver, and transmit signals through a transmitter to execute the first aspect or the third aspect, and any one of the possible implementation manners of the first aspect or the third aspect In the method.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory and the processor may be provided separately.
  • the memory can be a non-transitory (non-transitory) memory, such as a read only memory (ROM), which can be integrated with the processor on the same chip, or can be set in different On the chip, the embodiment of the present application does not limit the type of the memory and the setting mode of the memory and the processor.
  • ROM read only memory
  • sending instruction information may be a process of outputting instruction information from the processor
  • receiving capability information may be a process of receiving input capability information by the processor.
  • the data output by the processor can be output to the transmitter, and the input data received by the processor can come from the receiver.
  • the transmitter and receiver can be collectively referred to as a transceiver.
  • the processing device in the above-mentioned eleventh aspect may be one or more chips.
  • the processor in the processing device can be implemented by hardware or software.
  • the processor may be a logic circuit, integrated circuit, etc.; when implemented by software, the processor may be a general-purpose processor, which is implemented by reading the software code stored in the memory, and the memory may Integrated in the processor, can be located outside the processor, and exist independently.
  • a computer program product includes: a computer program (also called code, or instruction), which when the computer program is run, causes the computer to execute the first to third aspects above. Aspect and the method in any one of the possible implementation manners of the first aspect to the third aspect.
  • a computer-readable medium stores a computer program (also called code, or instruction) when it runs on a computer, so that the computer executes the above-mentioned first aspect to the first aspect.
  • a computer program also called code, or instruction
  • a communication system which includes the aforementioned one or more terminal devices and at least two network devices including the aforementioned first network device and second network device.
  • Fig. 1 is a schematic diagram of an example of a communication system applicable to the present application.
  • Fig. 2 is an exemplary flowchart of a method for receiving and sending information provided by an embodiment of the present application.
  • Fig. 3 is another exemplary flowchart of a method for receiving and sending information provided by an embodiment of the present application.
  • Fig. 4 is another exemplary flowchart of a method for receiving and sending information provided by an embodiment of the present application.
  • Fig. 5 is another exemplary flowchart of a method for receiving and sending information provided by an embodiment of the present application.
  • Fig. 6 is a schematic block diagram of an example of a communication device applicable to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of an example of a terminal device applicable to an embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of an example of a network device applicable to an embodiment of the present application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • GSM broadband code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • 5G fifth generation
  • NR new radio
  • V2X can include vehicle-to-network (V2N), vehicle-to-vehicle (V2V), Vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), etc.
  • LTE-V Long Term Evolution-Vehicle
  • FIG. 1 is a schematic diagram of a wireless communication system 100 applicable to an embodiment of the present application.
  • the wireless communication system applicable to the embodiments of the present application may include at least two network devices, such as the network devices 101 and 102 in the wireless communication system 100 as shown in FIG. 1.
  • the wireless communication system applicable to the embodiments of the application may further include at least one terminal device, such as the terminal devices 103 and 104 in the wireless communication system 100 shown in FIG. 1.
  • the at least one terminal device can establish a connection with the at least two network devices.
  • the terminal device 104 adopts a dual connectivity (DC) manner to establish a connection with the network devices 101 and 102.
  • the terminal device 104 can obtain the time information of the primary network device (or called the primary base station).
  • the method provided in this embodiment of the application can be used. Acquire the time information of the secondary network device according to the first information sent by the primary network device (that is, an example of the first network device).
  • the at least one terminal device may establish a connection with one of the at least two network devices, but does not establish a connection with another network device.
  • the terminal device 103 establishes a connection with the network device 101 but does not establish a connection with the network device 102, or , It is not in the connected mode of the network device 102, and when the accuracy of the time information of the network device 102 is higher than the accuracy of the time information of the network device 101, the method provided in the embodiment provided in this application can be used, according to the network device
  • the first information of 101 (that is, an example of the first network device) obtains the time information of the network device 102.
  • the terminal device 103 receives the time information on the first resource where the network device 102 sends the time information according to the first information, or the random access procedure initiated by the terminal device 103 to the network device 102, in the message 1 (message 1, msg1) Or message 3 (message 3, msg3) requests the network device 102 to send the first time information, but the application is not limited to this.
  • the terminal equipment in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal , Wireless communication equipment, user agent or user device.
  • the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety ( Wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home (smart home), cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local Loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistants, PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehi
  • wearable devices can also be called wearable smart devices, which are the general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories.
  • Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • the terminal device may also be a terminal device in an Internet of Things (IoT) system.
  • IoT Internet of Things
  • Its main technical feature is to connect objects to the network through communication technology, so as to realize the intelligent network of human-machine interconnection and interconnection of things.
  • the network device in the embodiment of the present application may be any device with a wireless transceiver function.
  • the equipment includes but is not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (Node B, NB), Base Station Controller (BSC) , Base transceiver station (Base Transceiver Station, BTS), home base station (for example, Home evolved NodeB, or Home Node B, HNB), baseband unit (BaseBand Unit, BBU), wireless fidelity (Wireless Fidelity, WIFI) system Access point (Access Point, AP), wireless relay node, wireless backhaul node, transmission point (transmission point, TP) or transmission and reception point (transmission and reception point, TRP), etc., can also be 5G (such as NR)
  • the gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include an active antenna unit (AAU for short).
  • CU implements some functions of gNB
  • DU implements some functions of gNB.
  • CU is responsible for processing non-real-time protocols and services, implementing radio resource control (RRC), and packet data convergence protocol (PDCP) The function of the layer.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • the DU is responsible for processing the physical layer protocol and real-time services, and realizes the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer.
  • RLC radio link control
  • MAC media access control
  • PHY physical layer
  • the network device may be a device that includes one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into network equipment in an access network (radio access network, RAN), and the CU can also be divided into network equipment in a core network (core network, CN), which is not limited in this application.
  • the network equipment provides services for the cell, and the terminal equipment communicates with the cell through the transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the network equipment, and the cell may belong to a macro base station (for example, a macro eNB or a macro gNB, etc.) , It may also belong to the base station corresponding to the small cell, where the small cell may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage area and low transmit power, and are suitable for providing high-speed data transmission services.
  • a macro base station for example, a macro eNB or a macro gNB, etc.
  • the small cell may include: metro cell, micro cell, pico cell, femto cell, etc.
  • DC means that a terminal device is connected to two network devices at the same time (for example, connected to two base stations at the same time), which can effectively improve transmission reliability and transmission rate.
  • One of the network equipment is the primary site (master node, MN), or is called the primary base station, master station, or main network device, and the other network device is the secondary node (SN), or called the secondary base station, secondary station, or As for the auxiliary network equipment, each base station can have several UE serving cells.
  • the primary base station and the secondary base station are connected through a network interface, and at least the primary base station is connected to the core network. If the primary base station is an LTE base station and the secondary base station is an NR base station, it is called EN-DC. If the primary base station is an NR base station, and the secondary base station is an LTE base station, it is called NE-DC. If the primary base station and the secondary base station are both NR base stations, they are called NR-DC.
  • SRBs Signaling radio bearers
  • SRBs are radio bearers (RBs) used to transmit RRC signaling and non-access stratum (NAS) signaling, and include SRB0, SRB1, SRB2, and SRB3.
  • SRB0 uses a common control channel (CCCH)
  • SRB1, SRB2, and SRB3 all use a dedicated control channel (DCCH).
  • SRB2 is used to carry NAS signaling, and SRB1 can also transmit NAS signaling before SRB2 is established.
  • SRB0, SRB1, and SRB2 are all used for signaling transmission between the terminal equipment and the primary base station.
  • SRB3 is used for signaling transmission between the terminal equipment and the secondary base station.
  • Fig. 2 is a schematic flowchart of a method for receiving and sending information according to an embodiment of the present application.
  • S210 The second network device sends sixth information to the first network device.
  • the first network device receives the sixth information from the second network device.
  • the sixth information indicates that the second network device has first time information.
  • the first time information includes at least one of coordinated universal time (UTC) information, global positioning system (GPS) time information, or local time information of the second network device .
  • UTC coordinated universal time
  • GPS global positioning system
  • that the second network device has the first time information indicates that the terminal device served by the first network device can obtain the first time information from the second network device.
  • the sixth information is used to indicate that the accuracy of the first time information of the second network device is higher than the accuracy of the second time information, and the second time information is the time information of the first network device.
  • the accuracy of the time information of the network device can be understood as the accuracy of the time information that the second network device can indicate to the terminal device.
  • the accuracy or unit may be 10 milliseconds, 1 ms, 1 microsecond us, or nanosecond ns, etc., but the application is not limited thereto.
  • the sixth information includes the access technology type information of the second network device, and the version of the second network device is higher than the version of the first network device.
  • the protocol specifies the accuracy of the time information that each version of the network device can provide to the terminal device.
  • the first network device may determine, according to the access technology type information provided by the second network device, whether the accuracy of the first time information of the second network device is higher than the accuracy of the time information of the first network device.
  • the second network device indicating a fourth-generation (the 4 th generatinom, 4G) mobile communication system, a network device, 5G mobile communication system, a network device, but the present application is not limited thereto.
  • the sixth information includes version information of the second network device.
  • the version information may indicate the version of the communication standard supported by the second network device, for example, the version of the standard specified by the 3rd generation partnership project (3rd generation partnership project, 3GPP) (for example, version 16, version 17) Etc., but the application is not limited to this.
  • 3rd generation partnership project 3rd generation partnership project, 3GPP
  • 3GPP 3rd generation partnership project
  • the sixth information includes a 1-bit indicator bit that indicates "0", indicating that the accuracy of the first time information is higher than that of the second time information; the indicator bit indicates "1", indicating that the The accuracy of the first time information is lower than the accuracy of the second time information.
  • the indicator bit indicates "1”, indicating that the accuracy of the first time information is higher than the accuracy of the second time information; the indicator bit indicates "0", indicating that the accuracy of the first time information is lower than the accuracy of the second time information. The accuracy of the time information.
  • the sixth information is used to indicate the unit or precision of the first time information of the second network device.
  • the accuracy of the time information that the second network device can indicate to the terminal device is 1 ms.
  • the sixth information indicates that the accuracy of the first time information is 1 ms.
  • the sixth information includes first time information of the second network device. That is, the sixth information directly indicates the first time information of the second network device, and the first network device can obtain the first time information through the sixth information.
  • the sixth message may be carried in an X2 interface establishment message or an Xn interface establishment message.
  • the sixth information includes but is not limited to one or more of the following information:
  • the first indication information is used to instruct the second network device to send the first resource of the second information, and the second information includes the first time information, or in other words, the first indication information is used to indicate the carrier that carries the first time information.
  • the second indication information is used to indicate whether the second network device broadcasts the first time information on the first resource
  • the third indication information, the third indication information is configuration information of the request message, and the request message is used to request the first time information.
  • the fourth indication information is used to indicate the identity of the second network device and/or the identity of the cell served by the second network device.
  • the fifth indication information is used to indicate that the first time information is received through dedicated signaling
  • the sixth indication information is used to indicate that the first time information is requested through dedicated signaling.
  • the second network device may notify it of the first resource for sending the first time information through the first indication information.
  • the sixth information includes the first indication information
  • the terminal device receives the first indication information through the first network device, ,
  • the first resource may be determined according to the first indication information, and the first time information may be received on the first resource.
  • the sixth information when it includes the first indication information, it may also include second indication information.
  • the second information indicates whether the second network device sends the first indication information on the first resource indicated by the first indication information.
  • Time information so that after receiving the second indication information through the first network device, the terminal device determines whether the second network device sends the first time information on the first resource.
  • the terminal device may send a request message to request the first network device to send the first time information so that the terminal device can obtain the first time information on the first resource
  • the first time information For the specific implementation of the first time information, reference may be made to the related description below, but the application is not limited thereto.
  • the sixth information may include the fourth instruction information, so that the first network device receives the fourth instruction information or the terminal device can pass the fourth instruction information after receiving the fourth instruction information through the first network device.
  • the identity of the second network device and/or the identity of the cell served by the second network device determines the source of the information.
  • the sixth information may include fifth indication information and/or sixth indication information, and after receiving the first information through the first network device, the terminal device will determine whether the first information includes the fifth indication information and/or Or after the sixth indication information, it can be determined whether to receive or request the first time information through dedicated signaling.
  • the terminal device will determine whether the first information includes the fifth indication information and/or Or after the sixth indication information, it can be determined whether to receive or request the first time information through dedicated signaling.
  • the second network device can provide auxiliary information for the terminal device to receive the first time information, so that the terminal device can receive the first time information from the second network device, so that the terminal device can obtain time information with higher accuracy , Thereby improving the reliability of communication.
  • the first network device may determine, according to the sixth information, that the accuracy of the time information of the second network device is higher than the accuracy of the time information of the first network device.
  • the first network device may determine that the accuracy of the time information of the second network device is higher than that of the first network device according to local information or interaction information with the second network device (for example, version information, etc.) The accuracy of the information.
  • the sixth information is used to indicate that the accuracy of the first time information of the second network device is higher than the accuracy of the time information of the first network device.
  • the first network device determines, according to the received sixth information, that the accuracy of the first time information is higher than the accuracy of the time information of the first network device.
  • the sixth information is used to indicate the access technology type information of the second network device, and the first network device determines the second network device according to the access technology type information of the second network device If the version is higher than the version of the first network device, it is determined that the accuracy of the time information of the second network device is higher than the accuracy of the time information of the second network device.
  • the sixth information includes the accuracy or unit of the first time information.
  • the sixth information includes the accuracy or unit of the time information that the second network device can indicate to the terminal device.
  • the first network device compares the unit or precision of the time information that the first network device and the second network device can indicate to the terminal device to determine the precision of the time information of the second network device Higher than the time accuracy of the first network device.
  • the accuracy of the time information of the first network device is 10 ms
  • the sixth information indicates that the accuracy of the first time information is 1 ms
  • the first network device determines the accuracy of the first time information after receiving the sixth information The accuracy is higher than the accuracy of the time information of the first network device.
  • S230 The first network device sends first information to the terminal device.
  • the first information is used to indicate that the second network device has first time information, or the first information is used to instruct the terminal device to obtain the first time information of the second network device.
  • the terminal device receives the first information from the first network device. After the first network device receives the sixth information sent by the second network device, it generates first information based on the sixth information and sends it to the terminal device. The first information is used to notify the terminal device that the second network device has the first information. Time information, or, the first information is used to instruct the terminal device to obtain the time information of the second network device.
  • the first information includes but is not limited to one or more of the following information:
  • the first indication information is used to instruct the second network device to send the first resource of the second information, and the second information includes the first time information, or in other words, the first indication information is used to indicate the carrier that carries the first time information.
  • the second indication information is used to indicate whether the second network device broadcasts the first time information on the first resource
  • the third indication information, the third indication information is configuration information of the request message, and the request message is used to request the first time information.
  • the fourth indication information is used to indicate the identity of the second network device and/or the identity of the cell served by the second network device.
  • the fifth indication information is used to indicate that the first time information is received through dedicated signaling
  • the sixth indication information is used to indicate that the first time information is requested through dedicated signaling.
  • the first information includes the first indication information
  • the terminal device executes S260 to receive the second terminal device on the first resource indicated by the first indication information The first time message sent.
  • the terminal device determines to send a request message according to the first information, and the request message is used to request the second network device to send the first time information.
  • the terminal device may request the second network device to send the first time information through but not limited to the following two methods.
  • the terminal device sends information A to the second network device, where the information A is used to request the first time information of the second network device.
  • the second network device receives the information A from the terminal device.
  • the terminal device is simultaneously connected to the first network device and the second network device.
  • the terminal device is simultaneously connected to the first network device and the second network device in a dual connection manner.
  • the second network device is an auxiliary network device (also called a secondary station or a secondary base station) in dual connectivity.
  • the terminal device sends the information A (that is, an example of the fifth information) to the second network device through signaling radio bearers 3 (signaling radio bearers, SRB), or in other words, the information A is carried on the second network device.
  • SRB3 for terminal equipment.
  • the first information includes sixth indication information, and the sixth indication information instructs the terminal device to request the first time information from the second network device through dedicated signaling.
  • the terminal device After the terminal device receives the first information including the sixth indication information, the terminal device sends the information A to the second network device through SRB3 to request the second network device to send the first time information.
  • the information A is dedicated signaling sent by the terminal device.
  • the information A is message 3 (msg 3) in the random access process.
  • the terminal device determines to request the first time information from the second network device after receiving the first information sent by the first network device, the terminal device initiates a random access process to the second network device, and then the random access
  • the message A is sent in msg3 of the incoming process to request the first time information of the second network device, but the application is not limited to this.
  • the first information includes the foregoing third indication information
  • the third indication information includes configuration information of the request message
  • the terminal device sends the information A (that is, , An example of the fourth information) to request the first time information of the second network device.
  • the third indication information may indicate the second resource used for the terminal device to send the request message, and the terminal device sends the information A on the second resource to request the time information of the second network device, but this application is not limited to this.
  • the third indication information includes random access channel (RACH) resource configuration information, and/or preamble configuration information.
  • RACH random access channel
  • the terminal device After receiving the first information, the terminal device sends the information A according to the third indication information.
  • the information A is the preamble sent on the RACH resource configured by the third indication information, or in other words, the information A is used for Request message 1 (msg1) of the random access procedure dedicated to the first time information of the second network device.
  • the first network device sends the first information to the terminal device, and configures the terminal device with a dedicated RACH resource and preamble for sending request information in the third indication information of the first information, and the terminal device uses the The preamble is sent on the RACH resource to request the first time information from the second network device.
  • the second network device receives the preamble sent by the terminal device on the RACH resource, it determines that the terminal device requests the time information of the second network device, but the application is not limited to this.
  • the first information includes first indication information and/or second indication information
  • the terminal device determines to acquire the first indication information of the second network device according to the indication of the first indication information and/or the second indication information.
  • the execution steps of the time information are, for example, the schematic flowchart shown in FIG. 3. Wherein, the parts in the flowchart shown in FIG. 3 that are the same as or similar to those in FIG. 2 can be referred to the description in FIG.
  • S231 may also be included after S230.
  • the terminal device determines whether the second network device sends the first time information according to the second indication information in the first information.
  • the terminal device determines whether the second network device sends the second information according to the second indication information in the first information, and the second information includes the first time information.
  • the second indication information instructs the second network device to send the second information
  • the second network device periodically sends the second information including the first time information, or the second network device is in The second information is sent on a first resource that is coming, but this application is not limited to this. That is, when the result indicated by the second indication information is "yes", the terminal device determines the first resource for the second network device to send the second information according to the first indication information, and executes S260, that is The second information is received on the first resource to obtain the first time information of the second network device.
  • the terminal device performs possible one in FIG. 3.
  • the second indication information indicates that the second network device does not send the second information, that is, the second indication information indicates that the second network device does not send the first time information (for example, the second network device does not periodically send the The second information, or the second network device does not actively send the second information, but the application is not limited to this), the terminal device sends the information A1 to the second network device (ie, an example of the third information).
  • the terminal device sends the information A1 to the second network device, and the information A1 is used to request the first time information of the second network device.
  • the message A1 is msg 3 in the random access process, that is, after the terminal device determines that the second network device does not send the first time information, it initiates the random access process to the second network device, and the terminal device First, send msg 1 to the second network device, and after receiving the random access response message (ie msg 2) sent by the second network device, send msg 3 to the second network device.
  • the msg 3 includes a message to the second network device.
  • the network device requests the information A1 of the first time information, but this application is not limited to this.
  • the terminal device sends the information A1 when the result indicated by the second indication information is "No" and the first information does not include the first indication information. That is to say, after receiving the first information, the terminal device determines that the second network device periodically sends or actively sends the first time information according to the indication result of the second indication information. Further, the terminal device also determines whether the first information includes the second indication information, and if the first information does not include the second indication information, the terminal device sends the information A1 to the second network device. That is, the second indication information indicates that the second network device does not send the first time information, and the first information does not include the configuration information of the request information (or in other words, there is no configuration information for the terminal device to send the request information. In the case of resource), the terminal device requests the first time information of the second network device by sending information A1 to the second network device.
  • the terminal device performs the second possibility in FIG. 3.
  • the terminal device sends information A2 according to the third indication information (ie, an example of the fourth information) ,
  • the information A2 is used to request the first time information of the second network device. That is, when the second indication information indicates that the second network device does not send the first time information, and the third indication information in the first information configures the terminal device with resources for sending request information, the terminal device After receiving the first information, send request information (that is, information A2) according to the third instruction information, requesting the second network device to send the first time information.
  • the third indication information includes RACH resource configuration information and/or preamble configuration information. That is, the information A2 is msg1 of the random access process, and the third indication information is that the terminal device configures the resource of msg1 for requesting the first time information of the second network device.
  • the first time information is carried in a first system message (system information block, SIB) sent by the second network device. That is, the second information sent by the second network device is a system message.
  • SIB system information block
  • the second information is carried in the SIB9 sent by the second network device, and the sixth information sent by the second network device to the first network device includes scheduling information of the system message of the second network device.
  • the first network device generates the first information according to the received sixth information, and the first information includes the scheduling information.
  • the scheduling information may include first indication information
  • the first indication information may include a first time interval
  • the first time interval is used by the terminal device to determine the first resource (that is, the second network device sends the information including the The first time information resource). For example, there is a first time interval between the first resource and the resource carrying the first information. After receiving the first information, the terminal device receives the first time information on the first resource separated by the first time interval.
  • the scheduling information may include first indication information, the first indication information may include a second time interval, and the second time interval is a time interval for the terminal device to receive the system message sent by the second network device, for example, the The second time interval may be referred to as a system message time window (SI window), where the SI window includes the first resource (that is, the second network device sends the SIB9 resource including the first time information), and the SI window may also It includes the resources for the second network device to send other system messages (that is, other system messages other than SIB9), that is, the scheduling information of the system message is used to indicate the scheduling of at least one system message sent by the second network device.
  • SI window system message time window
  • the scheduling information of the system message is used to indicate the scheduling of at least one system message sent by the second network device.
  • the application is not limited.
  • the scheduling information can be written as "SI-SchedulingInfo", which is not limited in this application.
  • the first indication information may further include a first period, and the first period is a period of the second time interval, that is, the resource of the second time interval is a periodicity whose period is the first period. resource.
  • the first indication information may also include a scheduling list of system messages of the second network device, and/or the sequence number of the SIB9 in the scheduling list of at least one system message of the second network device. The terminal device may determine according to the first indication information that the second network device sends the first resource of the SIB9.
  • the third indication information is used to configure a request message for the terminal device to request a system message of the second network device.
  • the third instruction information can be written as "SI-RequestConfig", which is not limited in this application.
  • the first information also includes second indication information.
  • the second indication information indicates that the second network device does not send the SIB9 in the system message window
  • the first information includes the third indication information
  • the terminal After receiving the first information, the device determines that the second network device does not periodically send or actively sends SIB9, but configures the terminal device with the resource requesting the first time information through the third indication information.
  • the terminal device may generate information A2 according to the configuration information of the request message, and send it to the second network device to request the first time information of the second network device;
  • the terminal device determines that the second network device does not send the SIB9. 2.
  • the network device does not periodically send or does not actively send SIB9, and there is no resource configured to send request information, the terminal device can initiate a random access process to the second network device, that is, send msg1 of the random access process first, After receiving the random access response message msg2 sent by the second network device, the terminal device sends msg3 to the second network device, and the msg 3 includes information A1 to request the first time information of the second network device .
  • the terminal device sends information B (that is, another example of fifth information) to the first network device, where the information B is used to instruct the terminal device to request the first time information of the second network device.
  • information B that is, another example of fifth information
  • the information B may be carried in a message (for example, msg1 or msg3) sent by the terminal device during the random access process, or the information B may be carried in the uplink control information sent by the terminal device.
  • a message for example, msg1 or msg3
  • the information B may be carried in the uplink control information sent by the terminal device.
  • the information B is carried in SRB1, that is, the terminal device may send the information B to the first network device through SRB1.
  • the first information includes sixth indication information, which instructs the terminal device to request the second network device to send the first time information to the first network device through dedicated signaling.
  • the terminal device determines to request the second network device to send the first time information to the first network device through dedicated signaling, then the terminal device can send the information to the first network device through SRB 1 B.
  • the first network device After receiving the information B, the first network device determines that the terminal device requests the second network device to send the first time information, and executes S241.
  • the first network device sends seventh information to the second network device, where the seventh information is used to instruct the terminal device to request the first time information of the second network device.
  • the second network device receives the seventh information from the first network device.
  • S250 The second network device determines that the terminal device requests the first time information.
  • the second network device After the second network device receives the information A, the information A1, or the information A2 sent by the terminal device, it determines that the terminal device requests the time information of the second network device. Alternatively, after receiving the seventh information sent by the first network device, the second network device determines that the terminal device requests the first time information of the second network device.
  • S260 The second network device sends the first time information to the terminal device.
  • the second network device sends second information, and the second information includes the first time information.
  • the sixth information and/or the first information includes fifth indication information, and the fifth indication information instructs the terminal device to receive the first time information through dedicated signaling. Then the second network device sends the first time information to the terminal device through dedicated signaling.
  • the dedicated signaling may be sent through SRB3.
  • the dedicated signaling may be an RRC message or MAC EC.
  • the second network device may periodically send the first time information, and include the first indication information in the sixth information sent in S210, and notify the terminal device to send the first time information through the first network device The first resource, and/or, the period for sending the first time information.
  • the terminal device executes S230, it determines the first resource according to the first information sent by the first network device, and executes S260 (that is, S240, S241, and S250 are optional steps), and the terminal device The first time information sent by the second network device is received on the resource.
  • the second network device may not actively send the second information. After receiving the information A, information A1, or information A2 sent by the terminal device in S240, the second network device sends the first information to the terminal device. Time information. Or, after receiving the seventh information sent by the first network device in S250, the second network device sends the second information to the terminal device. The terminal device obtains the time information of the second network device through the received second information.
  • the second network device receives the information A sent by the terminal device through SRB3, it determines that the terminal device requests the first time information, and the second network device sends the first time information to the terminal device.
  • the second network device broadcasts the first time information through a system message, for example, the first time information may be broadcast through SIB9.
  • the second network device receives the information A1 (msg3) or the information A2 (msg1) sent by the terminal device in the random access process
  • the second network device determines that the terminal device requests the network device to send SIB9, then the second network device
  • the network device sends the SIB9 to the terminal device on the first resource, and the terminal device receives the SIB9 on the first resource, and determines the first time information carried in the SIB9.
  • the size of the sequence number of each process does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of this application. . Therefore, in the specific implementation, some or all of the steps can be selected for implementation, which is not limited in this application.
  • the terminal device can receive time information from other network devices through the instruction of the first network device with which it establishes a wireless connection, so that the terminal device can obtain time information with higher precision, thereby improving the reliability of communication.
  • the terminal device is simultaneously connected to the first network device and the second network device in a dual connection manner, the first network device is the main network device (for example, the main base station), and the second network device is the auxiliary network Equipment (for example, secondary base station).
  • the terminal device can receive the time information from the secondary network device through an instruction with the main network device, so that the terminal device can obtain time information with higher precision, thereby improving the reliability of communication.
  • the terminal device may also send a request message according to the first information to request the second network device to send the first time information.
  • the first time information so that the terminal device can obtain more high-precision time information, thereby improving the reliability of communication.
  • the terminal equipment or higher-precision time information can enable the terminal equipment to perform some communication services that require high time accuracy, such as safe driving in the vehicle network and safe production in the industrial Internet.
  • FIG. 4 is a schematic flowchart of another example of the information receiving and sending method provided by this embodiment.
  • S410 The second network device sends sixth information to the first network device.
  • the first network device receives the sixth information from the second network device, and the sixth information is used to instruct the terminal device to receive the second system message of the second network device.
  • the second system message may include the foregoing first time information, or may be other system messages of the second network device, which is not limited in this application.
  • the sixth information is used to indicate that the second network device has a second system message.
  • the sixth information includes but is not limited to one or more of the following information:
  • First indication information where the first indication information is used to indicate the first resource that carries the second system message
  • Second indication information used to indicate whether the second network device broadcasts the second system message on the first resource
  • the third indication information, the third indication information is configuration information of the request message, and the request message is used to request the second system message.
  • the fourth indication information is used to indicate the identity of the second network device and/or the identity of the cell served by the second network device.
  • the fifth indication information is used to indicate that the second system message is received through dedicated signaling
  • the sixth indication information is used to indicate that the second system message is requested through dedicated signaling.
  • the sixth message may be carried in an X2 interface establishment message or an Xn interface establishment message.
  • the second network device may notify it of the first resource for sending the second system message through the first indication information.
  • the sixth information includes the first indication information
  • the terminal device receives the first indication information through the first network device, ,
  • the first resource can be determined according to the first indication information, and the second system message can be received on the first resource.
  • the sixth information when it includes the first indication information, it may also include second indication information, the second information indicating whether the second network device has sent the second indication information on the first resource indicated by the first indication information.
  • System message so that after receiving the second indication information through the first network device, the terminal device determines whether the second network device sends the second system message on the first resource.
  • the terminal device may send a request message to request the first network device to send the second system message so that the terminal device can obtain the second system message on the first resource
  • the second system message For the specific implementation of the second system message, reference may be made to the related description below, but the present application is not limited thereto.
  • the sixth information may include the fourth instruction information, so that the first network device receives the fourth instruction information or the terminal device can pass the fourth instruction information after receiving the fourth instruction information through the first network device.
  • the identity of the second network device and/or the identity of the cell served by the second network device determines the source of the information.
  • the sixth information may include fifth indication information and/or sixth indication information, and after receiving the first information through the first network device, the terminal device will determine whether the first information includes the fifth indication information and/or Or after the sixth indication information, it can be determined whether to receive or request the second system message through dedicated signaling.
  • the terminal device will determine whether the first information includes the fifth indication information and/or Or after the sixth indication information, it can be determined whether to receive or request the second system message through dedicated signaling.
  • the second network device can provide auxiliary information for the terminal device to receive the second system message, so that the terminal device can receive the second system message from the second network device.
  • the first network device determines, according to the sixth information, that the terminal device needs to receive the second system message of the second network device.
  • the first network device After the first network device receives the sixth information, it is determined that the terminal device is required to receive the second system message of the second network device.
  • the first network device generates first information according to the sixth information, and the first information is used to instruct the terminal device to receive the second system message of the second network device.
  • the first information may include one or more of the first indication information, the second indication information, the third indication information, the fourth indication information, the fifth indication information, or the sixth indication information, and the specific description of each indication information You can refer to the related description in step S410, which will not be repeated here.
  • the first network device sends the first information to the terminal device, where the first information is used to instruct the terminal device to receive a second system message of the second network device.
  • the sixth information includes the first indication information, and after receiving the first information, the terminal device executes S460, and receives the information sent by the second network device on the first resource indicated by the first indication information.
  • the second system message includes the
  • the terminal device determines to send a request message according to the first information, and the request message is used to request the second network device to send the second system message.
  • the terminal device may request the second network device to send the second system message through but not limited to the following two methods.
  • the terminal device sends information A to the second network device, where the information A is used to request a second system message of the second network device.
  • the terminal device sends the information A to the second network device through the SRB3, or in other words, the information A is carried in the SRB3 of the terminal device.
  • the first information includes sixth indication information, and the sixth indication information instructs the terminal device to request the second system message from the second network device through dedicated signaling.
  • the terminal device sends the information A to the second network device through SRB3 according to the indication of the sixth indication information, so as to request the second network device to send the second system message.
  • the information A is dedicated signaling sent by the terminal device.
  • the terminal device requests the second network device to send the second system message through the message 3 (msg 3) in the random access process.
  • the information A is carried in msg3 in the random access process initiated by the terminal device to the second network device.
  • the terminal device determines to receive the second system message of the second network device, then the terminal device initiates a random access procedure to the second network device, and in msg3 of the random access procedure
  • the information A is included to request the second network device to send the second system message.
  • the first information includes third indication information
  • the third indication information is for the terminal device to configure a resource for sending the request message.
  • the terminal device After receiving the first information, the terminal device generates a request message according to the third indication information, that is, information A, and sends the information A to the second network device to request the second network device to send the second system message.
  • the third indication information includes configuration information of the RACH resource and/or configuration information of the preamble, and the information A is the preamble sent on the RACH resource.
  • the second network device After receiving the preamble on the RACH resource, the second network device determines that the terminal device requests the second system message.
  • the first information includes first indication information and/or second indication information.
  • the terminal device determines the execution step of acquiring the second system information of the second network device according to the instructions of the first instruction information and/or the second instruction information.
  • the terminal device determines whether the second network device sends a second system message according to the second indication information in the first information.
  • the second instruction information instructs the second network device to send the second system message
  • the terminal device determines the first resource for the second network device to send the second system message according to the first instruction information, and executes S460. Receive the second system message sent by the second network device on the first resource.
  • the second indication information indicates that the second network device does not send the second system message, which may include the following two possible implementation manners.
  • non-transmission of the second network device mentioned in this application can be understood as the non-periodical or non-active transmission by the second network device, but the application is not limited to this.
  • the second indication information indicates that the second network device does not send the second system message, that is, the second indication information indicates that the second network device does not send the first time information, and the terminal device sends information A1 to the second network device. .
  • the information A1 may be carried in msg3 in the random access process.
  • the terminal device After determining that the second network device does not send the second system message according to the second indication information, the terminal device initiates a random access procedure to the second network device and carries information A1 in msg 3 to request the network device to send the second system message. system information.
  • information A1 is sent. That is, after receiving the first information, the terminal device determines that the second network device periodically sends or actively sends the second system message according to the indication result of the second indication information. Further, the terminal device also determines whether the first information includes third indication information, and if the first information does not include the third indication information, the terminal device sends information A1 to the second network device to request the network device to send the second system message .
  • the second indication information indicates that the second network device does not send a second system message
  • the first information includes the first indication information
  • the terminal device determines whether the first information includes third indication information, and if the first information includes third indication information, the terminal device sends information A2 according to the third indication information to request the network device to send the second system message .
  • the third indication information is used to configure a request message for the terminal device to request a system message of the second network device.
  • the third instruction information can be written as "SI-RequestConfig", which is not limited in this application.
  • the third indication information includes RACH resource configuration information and/or preamble configuration information. That is, the information A2 is msg1 of the random access process, and the third indication information is that the terminal device configures the resource of msg1 for requesting the first time information of the second network device.
  • the first information includes scheduling information of the system message of the second network device, and the scheduling information includes the first indication information.
  • the scheduling information may include first indication information, the first indication information may include a first time interval, and the first time interval is used by the terminal device to determine the first resource (that is, the second network device sends the information including the The resource of the second system message).
  • the scheduling information may include first indication information, the first indication information may include a second time interval, and the second time interval is a time interval for the terminal device to receive the system message of the second network device, for example, the The second time interval may be called a system message time window (SI window), where the SI window includes the first resource, and the SI window may also include other system messages sent by the second network device (ie, other system messages other than SIB9) That is, the scheduling information of the system message is used to indicate the scheduling of at least one system message sent by the second network device, which is not limited in this application.
  • the scheduling information can be written as "SI-SchedulingInfo", which is not limited in this application.
  • the first indication information may further include a first period, and the first period is a period of the second time interval, that is, the resource of the second time interval is a periodicity whose period is the first period. resource.
  • the first indication information may further include a scheduling list of system messages of the second network device, and/or the sequence number of the second system message in the scheduling list of at least one system message of the second network device .
  • the terminal device may determine the first resource for the second network device to send the second system message according to the first indication information.
  • the terminal device sends information B to the first network device, where the information B is used to instruct the terminal device to request a second system message of the second network device.
  • the information B may be carried in a message (for example, msg1 or msg3) sent by the terminal device during the random access process, or the information B may be carried in the uplink control information sent by the terminal device.
  • a message for example, msg1 or msg3
  • the information B may be carried in the uplink control information sent by the terminal device.
  • the information B is carried in SRB1, that is, the terminal device may send the information B to the first network device through SRB1.
  • the size of the sequence number of each process does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of this application. . Therefore, in the specific implementation, some or all of the steps can be selected for implementation, which is not limited in this application.
  • the terminal device can receive the second system message from the other network device through the instruction of the first network device with which the wireless connection is established, so that the terminal device can obtain the second system message of the other network device.
  • the terminal device is simultaneously connected to the first network device and the second network device in a dual connection manner, the first network device is the main network device (for example, the main base station), and the second network device is the auxiliary network Equipment (for example, secondary base station).
  • the terminal device can receive the system message from the auxiliary network device through an instruction with the main network device, so that the terminal device can obtain the second system message of the auxiliary network device, thereby improving the reliability of communication.
  • the terminal device may also send a request message according to the first information to request the second network device to send the second system message.
  • the second system message so that the terminal device can obtain the second system message.
  • FIG. 5 is a schematic flowchart of another example of the information receiving and sending method provided by this embodiment.
  • the terminal device sends a first message to the first network device, where the first message is used to request eighth system information of the first network device.
  • the first network device receives the first message from the terminal device.
  • the eighth system information includes at least one system information block required by the terminal device.
  • the first message may be carried in the message 3 (Msg3) of the random access procedure initiated by the terminal device to the first network device.
  • Msg3 the message 3
  • the first message can be written as "RRCSystemInfoRequest”.
  • the first message includes seventh indication information
  • the seventh indication information is used to indicate at least one system information message required by the terminal device
  • the at least one system information message includes At least one system information block.
  • the seventh indication information may indicate at least one system information message required by the terminal device.
  • the seventh indication information may include a bitmap, and each bit in the bitmap corresponds to a system information message.
  • bit position in the bit string in the seventh indication information when the bit position in the bit string in the seventh indication information is "1", it means that the system information message corresponding to the bit is requested by the terminal device, or vice versa, when the bit position is "0", it means that the bit corresponds to The system information message is requested by the terminal device.
  • the first message may include eighth indication information, and the eighth indication information is used to indicate whether the type of the system message requested by the terminal device is the third system message.
  • the eighth indication information is used to indicate whether the type of the system message requested by the terminal device is the third system message or the fourth system message.
  • the third system message is a system message related to positioning, and the third system message may include one or more system information blocks.
  • a system information block that includes positioning assistance information For example, a system information block that includes positioning assistance information.
  • the third system message can be written as "posSIB".
  • the third system message can be numbered. For example, it can be written as "posSIB1", “posSIB2", etc. The application is not limited to this.
  • the fourth system message may be in addition to the third system message.
  • the fourth system message may include system information block 2 (SIB2) of cell reselection information, and system information block 3 (SIB3) including cell reselection related information. ) And other system information.
  • SIB2 system information block 2
  • SIB3 system information block 3
  • the bit string in the seventh indication information corresponds to the system information message in the first scheduling list
  • the first The scheduling list is used to schedule system information messages of the third system message type.
  • the bit string can correspond to the system information messages in the first scheduling list in turn, that is, the first bit corresponds to the first system information message in the scheduling list.
  • the second bit corresponds to the second system information message in the scheduling list, and so on.
  • the bit string in the seventh indication information corresponds to the system information message in the second scheduling list
  • the second The scheduling list is used to schedule system information messages of the fourth system message type.
  • the bit string can correspond to the system information blocks in the second scheduling list in sequence, that is, the first bit corresponds to the first system information message in the scheduling list.
  • the second bit corresponds to the second system information message in the scheduling list, and so on.
  • the eighth indication information may include a bit, and the bit is used to indicate whether the system message requested by the terminal device is the third system message. For example, when the bit indicates "1", it indicates whether the system message requested by the terminal device is the third system message, or when the bit indicates "0", it indicates whether the system message requested by the terminal device is the third system message. Three system messages.
  • the reserved 12 bits in the system message request information (RRCSystemInfoRequest) in the existing NR system may be used to indicate whether the type of the system message requested by the terminal device is the third system message. Or, indicate whether the type of the system information block requested by the terminal device is the third system message or the fourth system message.
  • the 12 bits in the RRCSystemInfoRequest are all "1" it indicates that the type of the system message requested by the terminal device is the third system message. Or, when the 12 bits in the RRCSystemInfoRequest are "1", it means that the type of the system message requested by the terminal device is the fourth system message, but the application is not limited to this.
  • the first message may include ninth indication information, and the ninth indication information is used to indicate the bits of the seventh indication information indicating the information block in the third system message, and/or the The ninth indication information is used to indicate the bits of the information block in the fourth system message in the seventh indication information,
  • the ninth indication information may include N bits, and the four bits are used to indicate K, where K is greater than 0 and less than or equal to 2 N. Then the ninth indication information indicates that the first K bits in the seventh indication information correspond to the first scheduling list, and the other bits in the seventh indication information correspond to the second scheduling list. That is, the first K bits are used to indicate whether the terminal device requests the first K system information messages in the first scheduling list, and the last NK bits are used to indicate whether the terminal device requests the first NK system information messages in the second scheduling list. That is, the first K bits of the seventh indication information are used to indicate the system information message of the third system message type requested by the terminal device, and the other bits in the seventh indication information indicate the fourth system message type requested by the terminal device System information message.
  • the ninth indication information indicates that the first K bits in the seventh indication information correspond to the second scheduling list, and the other bits in the seventh indication information correspond to the first scheduling list. Not limited.
  • the first network device determines at least one system information message requested by the terminal device according to the first message.
  • the first network device After receiving the first message, the first network device determines the system information message corresponding to the bit string of the seventh indication information according to the eighth indication information in the first message. For example, the bit string only corresponds to that of the third system message.
  • the system information message corresponds, or the bit string only corresponds to the system information message of the fourth system message, or, the bit string may partially correspond to the system information message in the third system message, and some bits correspond to the fourth system message System information messages in the.
  • the first network device determines one or more system information messages requested by the terminal device according to the seventh indication information.
  • the first network device sends the at least one system information message requested by the first network device to the terminal device.
  • the terminal device receives the one or more system information messages sent from the first network device.
  • the terminal device and the first network device can reach an agreement on the system information message requested by the terminal device, so that the first network device sends the system information message requested by the terminal device to the terminal device.
  • the probability of error occurrence is reduced, and the reliability of communication can be ensured.
  • Fig. 6 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 1500 may include a processing unit 1510 and a transceiving unit 1520.
  • the communication device 1500 may correspond to the terminal device in the above method embodiment, for example, it may be a terminal device or a chip configured in the terminal device.
  • the communication device 1500 may correspond to the terminal equipment in the methods 200, 300, 400, and 500 according to the embodiments of the present application, and the communication device 1500 may include a device for executing The unit of the method executed by the terminal device in the methods 200, 300, 400, and 500.
  • the units in the communication device 1500 and the other operations and/or functions described above are used to implement the corresponding processes of the methods 200, 300, 400, and 500 in FIG. 2, FIG. 3, FIG. 4, and FIG. 5, respectively.
  • the transceiver unit 1520 can be used to execute S230, S240, and S260 in the method 200.
  • the transceiving unit 1520 can be used to execute S230, S240, and S260 in the method 300, and the processing unit 1510 can be used to execute S231 in the method 300.
  • the transceiver unit 1520 can be used to execute S430, S440, and S460 in the method 400.
  • the transceiver unit 1520 can be used to execute S510 and S530 in the method 500.
  • the transceiver unit 1520 in the communication device 1500 may correspond to the transceiver 2020 in the terminal device 2000 shown in FIG. 7, and the processing unit 1510 in the communication device 1500 may It corresponds to the processor 2010 in the terminal device 2000 shown in FIG. 7.
  • the transceiving unit 1520 in the communication device 1500 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it may correspond to the terminal device shown in FIG. 7
  • the processing unit 1510 in the communication device 1500 may be implemented by at least one processor, for example, may correspond to the processor 2010 in the terminal device 2000 shown in FIG. 7, and the processing in the communication device 1500
  • the unit 1510 can also be implemented by at least one logic circuit.
  • the communication device 1500 may further include a processing unit 1510, and the processing unit 1510 may be used to process instructions or data to implement corresponding operations.
  • the communication device 1500 may further include a storage unit, the storage unit may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.
  • the communication device 1500 may correspond to the network device in the above method embodiment, for example, it may be a network device or a chip configured in the network device.
  • the communication device 1500 may correspond to the first network device in the methods 200, 300, 400, and 500 according to the embodiments of the present application, and the communication device 1500 may include a device for executing FIG. 2, FIG. 3, FIG. 4, and FIG. The unit of the method executed by the first network device in the methods 200, 300, 400, and 500 in 5.
  • the units in the communication device 1500 and the other operations and/or functions described above are used to implement the corresponding processes of the methods 200, 300, 400, and 500 in FIG. 2, FIG. 3, FIG. 4, and FIG. 5, respectively.
  • the transceiver unit 1520 can be used to execute S210, S230, S240, and S241 in the method 200, and the processing unit 1510 can be used to execute the method. S220 in 200.
  • the transceiving unit 1520 can be used to execute S210 and S230 in the method 300, and the processing unit 1510 can be used to execute S220 in the method 200.
  • the transceiver unit 1520 can be used to execute S410, S430, S440, and S441 in the method 400, and the processing unit 1510 can be used to execute the method 400.
  • the transceiving unit 1520 can be used to execute S510 and S530 in the method 500
  • the processing unit 1510 can be used to execute S520 in the method 500. It should be understood that the specific process for each unit to execute the foregoing corresponding steps has been described in detail in the foregoing method embodiment, and is not repeated here for brevity.
  • the communication apparatus 1500 may correspond to the second network device in the methods 200, 300, and 400 according to the embodiments of the present application, and the communication apparatus 1500 may include methods for executing the method 200 in FIG. 2, FIG. 3, and FIG. , 300, 400, the unit of the method executed by the second network device.
  • each unit in the communication device 1500 and other operations and/or functions described above are used to implement the corresponding processes of the methods 200, 300, and 400 in FIG. 2, FIG. 3, and FIG. 4, respectively.
  • the transceiver unit 1520 can be used to execute S210, S240, and S260 in the method 200, and the processing unit 1510 can be used to execute the method 200.
  • S250 When the communication device 1500 is used to execute the method 300 in FIG. 3, the transceiver unit 1520 can be used to execute S210, S240, and S260 in the method 300, and the processing unit 1510 can be used to execute S250 in the method 200. .
  • the transceiver unit 1520 can be used to execute S410, S440, S441, and S460 in the method 400, and the processing unit 1510 can be used to execute the method 400.
  • S450 It should be understood that the specific process for each unit to execute the foregoing corresponding steps has been described in detail in the foregoing method embodiment, and is not repeated here for brevity.
  • the transceiver unit in the communication device 1500 may correspond to the transceiver 3100 in the network device 3000 shown in FIG. 8, and the processing unit 1510 in the communication device 1500 may It corresponds to the processor 3202 in the network device 3000 shown in FIG. 8.
  • the communication device 1500 may further include a processing unit 1510, and the processing unit 1510 may be used to process instructions or data to implement corresponding operations.
  • the communication device 1500 may further include a storage unit, the storage unit may be used to store instructions or data, and the processing unit may call the instructions or data stored in the storage unit to implement corresponding operations.
  • the transceiver unit 1520 in the communication device 1500 can be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it can correspond to the network shown in FIG. 8
  • the transceiver 3100 in the device 3000, the processing unit 1510 in the communication device 1500 may be implemented by at least one processor, for example, may correspond to the processor 3202 in the network device 3000 shown in FIG.
  • the processing unit 1510 may be implemented by at least one logic circuit.
  • FIG. 7 is a schematic structural diagram of a terminal device 2000 provided by an embodiment of the present application.
  • the terminal device 2000 can be applied to the system shown in FIG. 1 to perform the functions of the terminal device in the foregoing method embodiment.
  • the terminal device 2000 includes a processor 2010 and a transceiver 2020.
  • the terminal device 2000 further includes a memory 2030.
  • the processor 2010, the transceiver 2020, and the memory 2030 can communicate with each other through internal connection paths to transfer control and/or data signals.
  • the memory 2030 is used for storing computer programs, and the processor 2010 is used for downloading from the memory 2030. Call and run the computer program to control the transceiver 2020 to send and receive signals.
  • the terminal device 2000 may further include an antenna 2040 for transmitting the uplink data or uplink control signaling output by the transceiver 2020 through a wireless signal.
  • the above-mentioned processor 2010 and the memory 2030 may be combined into a processing device, and the processor 2010 is configured to execute the program code stored in the memory 2030 to realize the above-mentioned functions.
  • the memory 2030 may also be integrated in the processor 2010 or independent of the processor 2010.
  • the processor 2010 may correspond to the processing unit in FIG. 6.
  • the above-mentioned transceiver 2020 may correspond to the transceiver unit in FIG. 6.
  • the transceiver 2020 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used to receive signals, and the transmitter is used to transmit signals.
  • the terminal device 2000 shown in FIG. 7 can implement various processes involving the terminal device in the method embodiments shown in FIG. 2, FIG. 3, and FIG. 4.
  • the operations and/or functions of each module in the terminal device 2000 are respectively for implementing the corresponding processes in the foregoing method embodiments.
  • the above-mentioned processor 2010 can be used to perform the actions described in the previous method embodiments implemented by the terminal device, and the transceiver 2020 can be used to perform the terminal device described in the previous method embodiments to send to or receive from the network device action.
  • the transceiver 2020 can be used to perform the terminal device described in the previous method embodiments to send to or receive from the network device action.
  • the aforementioned terminal device 2000 may further include a power supply 2050 for providing power to various devices or circuits in the terminal device.
  • the terminal device 2000 may also include one or more of an input unit 2060, a display unit 2070, an audio circuit 2080, a camera 2090, and a sensor 2100.
  • the audio circuit It may also include a speaker 2082, a microphone 2084, and so on.
  • FIG. 8 is a schematic diagram of a structure of a network device provided by an embodiment of the present application, for example, it may be a schematic diagram of a related structure of a network device.
  • the network device 3000 shown in FIG. 8 can implement various processes involving the network device in the method embodiments shown in FIG. 2, FIG. 3, and FIG. 4.
  • the operations and/or functions of each module in the network device 3000 are respectively for implementing the corresponding processes in the foregoing method embodiments.
  • the network device 3000 shown in FIG. 8 is only a possible architecture of the network device, and should not constitute any limitation to this application.
  • the method provided in this application can be applied to network devices of other architectures.
  • network equipment including CU, DU, and AAU. This application does not limit the specific architecture of the network device.
  • An embodiment of the present application also provides a processing device, including a processor and an interface; the processor is configured to execute the method in any of the foregoing method embodiments.
  • the aforementioned processing device may be one or more chips.
  • the processing device may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), or It is a central processor unit (CPU), it can also be a network processor (NP), it can also be a digital signal processing circuit (digital signal processor, DSP), or it can be a microcontroller (microcontroller unit). , MCU), it can also be a programmable logic device (PLD) or other integrated chips.
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • SoC system on chip
  • CPU central processor unit
  • NP network processor
  • DSP digital signal processing circuit
  • microcontroller unit microcontroller unit
  • MCU programmable logic device
  • PLD programmable logic device
  • each step of the above method can be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components .
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM
  • the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code runs on a computer, the computer executes Figure 2, Figure 3, Figure 4 shows the method in the embodiment.
  • the present application also provides a computer-readable medium that stores program code, and when the program code runs on a computer, the computer executes FIGS. 2, 3, and 3 Figure 4 shows the method in the embodiment.
  • the present application also provides a system, which includes the aforementioned one or more terminal devices and one or more network devices.
  • the network equipment in each of the above-mentioned device embodiments corresponds completely to the network equipment or terminal equipment in the terminal equipment and method embodiments, and the corresponding modules or units execute the corresponding steps.
  • the communication unit executes the receiving or the terminal equipment in the method embodiments.
  • the processing unit executes the functions of specific units, refer to the corresponding method embodiments. Among them, there may be one or more processors.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk (solid state disc, SSD)) etc.
  • the network equipment in the above-mentioned device embodiments completely corresponds to the network equipment or terminal equipment in the terminal equipment and method embodiments, and the corresponding modules or units execute the corresponding steps.
  • the communication unit (transceiver) executes the receiving or terminal equipment in the method embodiments.
  • the processing unit (processor).
  • the functions of specific units refer to the corresponding method embodiments. Among them, there may be one or more processors.
  • component used in this specification are used to denote computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution.
  • the component may be, but is not limited to, a process, a processor, an object, an executable file, an execution thread, a program, and/or a computer running on a processor.
  • the application running on the computing device and the computing device can be components.
  • One or more components may reside in processes and/or threads of execution, and components may be located on one computer and/or distributed among two or more computers.
  • these components can be executed from various computer readable media having various data structures stored thereon.
  • the component can be based on, for example, a signal having one or more data packets (e.g. data from two components interacting with another component in a local system, a distributed system, and/or a network, such as the Internet that interacts with other systems through a signal) Communicate through local and/or remote processes.
  • a signal having one or more data packets (e.g. data from two components interacting with another component in a local system, a distributed system, and/or a network, such as the Internet that interacts with other systems through a signal) Communicate through local and/or remote processes.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • each functional unit may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented by software, it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions (programs).
  • programs When the computer program instructions (programs) are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

本申请提供了一种通信方法，包括：终端设备通过接收到的来自第一网络设备的第一信息，确定第二网络设备有第一时间信息，该第一时间信息可以是精度高于第一网络设备的第二时间信息的精度的时间信息，终端设备可以根据该第一信息获取该第二网络设备的第一时间信息，使得终端设备能够获得较高精度的时间信息，以提高通信的可靠性。

Description

通信方法以及通信装置
本申请要求于2020年4月9日提交中国专利局、申请号为202010275989.2、申请名称为“通信方法以及通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，并且更具体地，涉及一种通信方法以及通信装置。
背景技术
在蜂窝移动通信系统中，收、发设备的时间同步是保证正常通信的基础。随着蜂窝移动通信的业务拓展，对通信设备所获取的时间的准确性有了更高的需求，例如，高精度定位业务、低时延需求的业务、以及各种垂直行业的应用，如车辆网、工业互联网、人工智能等，准确的时间信息能够保证通信的可靠性，进而保障车辆的安全行驶或者工业互联网中的生产安全。在现有的通信系统中，例如第四代(4 th generation，4G)移动通信系统、第五代(5 th generation，5G)移动通信系统中网络设备通过系统消息为终端设备提供授时服务。然而不同版本的网络设备能够为终端设备提供的时间精度不同，在高版本的终端设备接入低版本的网络设备的情况下，该终端设备仅能够获得所接入的低版本的网络设备的时间信息，这使得终端设备无法进行较高时间精度需求的业务。如何使通信设备获得更准确的时间信息是本领域技术人员研究的热点。
发明内容
本申请提供一种通信方法以及通信装置，以期能够获取更高精度的时间信息，进而提高通信的可靠性。
第一方面，提供了一种通信方法，该方法可以由终端设备或配置于(或用于)终端设备的模块(如芯片)执行，以下以该方法由终端设备执行为例进行说明。
该方法包括：接收来自第一网络设备的第一信息，该第一信息用于指示第二网络设备有第一时间信息，该第一时间信息包括协调世界时间UTC信息，全球定位系统GPS时间信息或本地时间信息中的至少一个；根据该第一信息接收来自该第二网络设备的该第一时间信息。
结合第一方面，在第一方面的某些实现方式中，该第一时间信息的精度高于第二时间信息的精度，该第二时间信息为该第一网络设备的时间信息。
可选地，该第一信息用于指示终端设备获取第二网络设备的第一时间信息。
根据上述方案，终端设备可以通过与其建立无线连接的第一网络设备的指示，接收来自其他网络设备的时间信息，使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。
可选地，终端设备通过双连接的方式同时连接于该第一网络设备和该第二网络设备，该第一网络设备为主网络设备(例如，主基站)，该第二网络设备为辅助网络设备(例如，辅基站)。
根据上述方案，终端设备可以通过与主网络设备的指示，接收来自辅网络设备的时间信息，使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。
结合第一方面，在第一方面的某些实现方式中，该第一信息中还包括以下一种或多种信息：
第一指示信息，用于指示承载该第一时间信息的第一资源；
第二指示信息，用于指示该第二网络设备是否在第一资源上广播该第一时间信息；
第三指示信息，该第三指示信息为请求消息的配置信息，该请求消息用于请求该第一时间信息。
第四指示信息，用于指示该第二网络设备的标识和/或该第二网络设备提供服务的小区的标识。
第五指示信息，用于指示通过专有信令接收该第一时间信息；
第六指示信息，用于指示通过专有信令向该第二网络设备请求该第一时间信息。
根据上述方案，第一网络设备通过第一信息为终端设备提供接收第一时间信息的辅助信息，以便终端设备能够接收到来自第二网络设备的该第一时间信息，使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。
结合第一方面，在第一方面的某些实现方式中，该第一信息包括该第二网络设备的至少一个系统消息的调度信息，该调度信息包括该第一指示信息和/或该第二指示信息，该至少一个系统消息中的第一系统消息包括该第一时间信息。
根据上述方案，第二网络设备通过系统消息发送该第一时间信息，该第一信息为终端设备提供系统消息的调度信息，以便终端设备能够接收到来自第二网络设备的该第一时间信息，使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。
结合第一方面，在第一方面的某些实现方式中，该第一信息包括第二指示信息，以及，该根据该第一信息接收来自该第二网络设备的该第一时间信息，包括：当该第二指示信息指示结果为“是”时，接收来此该第二网络设备的该第一时间信息。
根据上述方案，第一信息中的第二指示信息指示该第二网络设备发送该第一时间信息，例如，周期性地发送或在第一指示信息指示的第一资源上发送该第一时间信息，终端设备可以接收来自第二网络设备的该第一时间信息。使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。
结合第一方面，在第一方面的某些实现方式中，该第二指示信息指示的结果为“否”，该方法还包括：向该第二网络设备发送第三信息，其中，该第三信息用于请求该第一时间信息，该第三信息承载于随机接入过程的消息3。
根据上述方案，第一信息中的第二指示信息指示该第二网络设备没有周期性地发送或主动发送该第一时间信息，终端设备可以发起随机接入过程，并在消息3中向第二网络设备发送请求信息，以请求该第二网络设备发送该第一时间信息。使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。
结合第一方面，在第一方面的某些实现方式中，该第二指示信息指示的结果为“否”， 且该第一信息不包括该第三指示信息，该方法还包括：向该第二网络设备发送第三信息，其中，该第三信息用于请求该第一时间信息，该第三信息承载于随机接入过程的消息3。
根据上述方案，第一信息中的第二指示信息指示该第二网络设备没有周期性地发送或主动发送该第一时间信息，并且第一信息没有为终端设备配置请求消息的资源的情况下，终端设备可以发起随机接入过程，并在消息3中向第二网络设备发送请求信息，以请求该第二网络设备发送该第一时间信息。使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。
结合第一方面，在第一方面的某些实现方式中，该第二指示信息指示的结果为“否”，且该第一信息包括该第三指示信息，该方法还包括：根据该第三指示信息发送第四信息，该第四信息为该请求消息。
根据上述方案，第一信息中的第二指示信息指示该第二网络设备没有周期性地发送或主动发送该第一时间信息，且第一信息为终端设备配置了发送用于请求消息的资源，终端设备可以采用第三指示信息配置的资源发送请求消息，以请求该第二网络设备发送该第一时间信息。使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。
结合第一方面，在第一方面的某些实现方式中，该第三指示信息包括随机接入信道RACH资源的配置信息和/或前导码的配置信息，该请求消息为发送在该RACH资源的该前导码。
根据上述方案，第三指示信息为终端设备配置的请求消息专用资源可以是消息1的资源，包括RACH资源和前导码，终端设备可以根据第三指示信息的配置生成消息1，以请求该第二网络设备发送该第一时间信息。使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：发送第五信息，该第五信息用于请求该第一时间信息。
结合第一方面，在第一方面的某些实现方式中，该第五信息承载于信令无线承载1。
根据上述方案，终端设备可以通过无线信令承载1向第一网络设备发送请求消息，使得第一网络设备在接收到请求消息后能够向第二网络设备通知该终端设备请求该第一网络设备的第一时间信息，使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。
结合第一方面，在第一方面的某些实现方式中，该第五信息承载于信令无线承载3。
根据上述方案，终端设备可以通过无线信令承载3向第二网络设备发送请求消息，以请求该第二网络设备发送该第一时间信息，使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。
第二方面，提供了一种通信方法，该方法可以由第一网络设备或配置于(或用于)第一网络设备的模块(如芯片)执行，以下以该方法由第一网络设备执行为例进行说明。
该方法包括：接收来自第二网络设备的第六信息，该第六信息用于指示该第二网络设备有第一时间信息，或者，该第六信息用于指示该第二网络设备的第一时间信息的精度高于该第一网络设备的第二时间信息的精度，其中，该第一时间信息包括协调世界时间UTC信息，全球定位系统GPS时间信息或本地时间信息中的至少一个；向终端设备发送第一信息，该第一信息用于指示第二网络设备有该第一时间信息。
结合第二方面，在第二方面的某些实现方式中，该第六信息和/或该第一信息包括以下信息中的一项或多项：
第一指示信息，用于指示承载该第一时间信息的第一资源；
第二指示信息，用于指示该第二网络设备是否在第一资源上广播该第一时间信息；
第三指示信息，该第三指示信息为请求消息的配置信息，该请求消息用于请求该第一时间信息。
第四指示信息，用于指示该第二网络设备的标识和/或该第二网络设备提供服务的小区的标识。
第五指示信息，用于指示通过专有信令接收该第一时间信息；
第六指示信息，用于指示通过专有信令向该第二网络设备请求该第一时间信息。
结合第二方面，在第二方面的某些实现方式中，该第一信息包括该第二网络设备的至少一个系统消息的调度信息，该调度信息包括该第一指示信息和/或该第二指示信息，该至少一个系统消息中的第一系统消息包括该第一时间信息。
结合第二方面，在第二方面的某些实现方式中，该第三指示信息包括随机接入信道RACH资源的配置信息和/或前导码的配置信息，该请求消息为发送在该RACH资源的该前导码。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：
接收来自该终端设备的第五信息，该第五信息用于指示请求该第一时间信息；
向该第二网络设备发送第七信息，该第七信息用于指示该终端设备请求该第一时间信息。
结合第二方面，在第二方面的某些实现方式中，该第五信息承载于信令无线承载1。
第三方面，提供了一种通信方法，该方法可以由第二网络设备或配置于(或用于)第二网络设备的模块(如芯片)执行，以下以该方法由第二网络设备执行为例进行说明。
该方法包括：向第一网络设备发送第六信息，该第六信息用于指示该第二网络设备有第一时间信息，或者，该第六信息用于指示该第二网络设备的第一时间信息的精度高于该第一网络设备的第二时间信息的精度，其中，该第一时间信息包括协调世界时间UTC信息，全球定位系统GPS时间信息或本地时间信息中的至少一个；向终端设备发送该第一时间信息。
结合第三方面，在第三方面的某些实现方式中，该第六信息中还包括以下一种或多种信息：
第一指示信息，用于指示承载该第一时间信息的第一资源；
第二指示信息，用于指示该第二网络设备是否在第一资源上广播该第一时间信息；
第三指示信息，该第三指示信息为请求消息的配置信息，该请求消息用于请求该第一时间信息。
第四指示信息，用于指示该第二网络设备的标识和/或该第二网络设备提供服务的小区的标识。
第五指示信息，用于指示通过专有信令接收该第一时间信息；
第六指示信息，用于指示通过专有信令向该第二网络设备请求该第一时间信息。
结合第三方面，在第三方面的某些实现方式中，该第六信息中包括该第一指示信息， 该向终端设备发送该第一时间信息，包括：
在该第一资源上发送该第一时间信息。
结合第三方面，在第三方面的某些实现方式中，该第一信息包括该第二网络设备的至少一个系统消息的调度信息，该调度信息包括该第一指示信息和/或该第二指示信息，该至少一个系统消息中的第一系统消息包括该第一时间信息。
结合第三方面，在第三方面的某些实现方式中，该第一信息包括第二指示信息，以及，向终端设备发送该第一时间信息，包括：
当该第二指示信息指示结果为“是”时，向该终端设备发送该第一时间信息。
结合第三方面，在第三方面的某些实现方式中，该第二指示信息指示的结果为“否”，该方法还包括：
接收来自终端设备的第三信息，其中，该第三信息用于请求该第一时间信息，该第三信息承载于随机接入过程的消息3。
结合第三方面，在第三方面的某些实现方式中，该第二指示信息指示的结果为“否”，且该第一信息包括该第三指示信息，该方法还包括：
接收来自终端设备的第四信息，该第四信息为该请求消息。
结合第三方面，在第三方面的某些实现方式中，该第三指示信息包括随机接入信道RACH资源的配置信息和/或前导码的配置信息，该请求消息为发送在该RACH资源的该前导码。
结合第三方面，在第三方面的某些实现方式中，该方法还包括：
接收来自终端设备的第五信息，该第五信息用于请求该第一时间信息。
结合第三方面，在第三方面的某些实现方式中，该第五信息承载于信令无线承载3。
第四方面，提供了一种通信装置，该装置例如为终端设备，或者为终端设备中的芯片，包括：收发单元，用于接收来自第一网络设备的第一信息，该第一信息用于指示第二网络设备有第一时间信息，该第一时间信息包括协调世界时间UTC信息，全球定位系统GPS时间信息或本地时间信息中的至少一个；处理单元，用于确定接收来自该第二网络设备的该第一时间信息；该收发单元还用于根据该第一信息接收来自该第二网络设备的该第一时间信息。
结合第四方面，在第四方面的某些实现方式中，该第一时间信息的精度高于第二时间信息的精度，该第二时间信息为该第一网络设备的时间信息。
结合第四方面，在第四方面的某些实现方式中，该第一信息中还包括以下一种或多种信息：
第一指示信息，用于指示承载该第一时间信息的第一资源；
第二指示信息，用于指示该第二网络设备是否在第一资源上广播该第一时间信息；
第三指示信息，该第三指示信息为请求消息的配置信息，该请求消息用于请求该第一时间信息。
第四指示信息，用于指示该第二网络设备的标识和/或该第二网络设备提供服务的小区的标识。
第五指示信息，用于指示通过专有信令接收该第一时间信息；
第六指示信息，用于指示通过专有信令向该第二网络设备请求该第一时间信息。
结合第四方面，在第四方面的某些实现方式中，该第一信息包括该第二网络设备的至少一个系统消息的调度信息，该调度信息包括该第一指示信息和/或该第二指示信息，该至少一个系统消息中的第一系统消息包括该第一时间信息。
结合第四方面，在第四方面的某些实现方式中，该第一信息包括第二指示信息，以及，该收发单元具体用于，
当该第二指示信息指示结果为“是”时，接收来此该第二网络设备的该第一时间信息。
结合第四方面，在第四方面的某些实现方式中，该第二指示信息指示的结果为“否”，该收发单元还用于向该第二网络设备发送第三信息，其中，该第三信息用于请求该第一时间信息，该第三信息承载于随机接入过程的消息3。
结合第四方面，在第四方面的某些实现方式中，该第二指示信息指示的结果为“否”，且该第一信息包括该第三指示信息，该收发单元还用于根据该第三指示信息发送第四信息，该第四信息为该请求消息。
结合第四方面，在第四方面的某些实现方式中，该第三指示信息包括随机接入信道RACH资源的配置信息和/或前导码的配置信息，该请求消息为发送在该RACH资源的该前导码。
结合第四方面，在第四方面的某些实现方式中，该收发单元还用于发送第五信息，该第五信息用于请求该第一时间信息。
结合第四方面，在第四方面的某些实现方式中，该第五信息承载于信令无线承载1，或者，该第五信息承载于信令无线承载3。
第五方面，提供了一种通信装置，该装置例如为第一网络设备，或者为第一网络设备中的芯片，包括：收发单元，用于接收来自第二网络设备的第六信息，该第六信息用于指示该第二网络设备有第一时间信息，或者，该第六信息用于指示该第二网络设备的第一时间信息的精度高于该第一网络设备的第二时间信息的精度，其中，该第一时间信息包括协调世界时间UTC信息，全球定位系统GPS时间信息或本地时间信息中的至少一个；
处理单元，用于根据该第六信息生成第一信息，该第一信息用于指示第二网络设备有该第一时间信息；
该收发单元还用于向终端设备发送第一信息。
结合第五方面，在第五方面的某些实现方式中，该第六信息和/或该第一信息包括以下信息中的一项或多项：
第一指示信息，用于指示承载该第一时间信息的第一资源；
第二指示信息，用于指示该第二网络设备是否在第一资源上广播该第一时间信息；
第三指示信息，该第三指示信息为请求消息的配置信息，该请求消息用于请求该第一时间信息。
第四指示信息，用于指示该第二网络设备的标识和/或该第二网络设备提供服务的小区的标识。
第五指示信息，用于指示通过专有信令接收该第一时间信息；
第六指示信息，用于指示通过专有信令向该第二网络设备请求该第一时间信息。
结合第五方面，在第五方面的某些实现方式中，该第一信息包括该第二网络设备的至少一个系统消息的调度信息，该调度信息包括该第一指示信息和/或该第二指示信息，该 至少一个系统消息中的第一系统消息包括该第一时间信息。
结合第五方面，在第五方面的某些实现方式中，该第三指示信息包括随机接入信道RACH资源的配置信息和/或前导码的配置信息，该请求消息为发送在该RACH资源的该前导码。
结合第五方面，在第五方面的某些实现方式中，该收发单元还用于接收来自该终端设备的第五信息，该第五信息用于指示请求该第一时间信息；
该收发单元还用于向该第二网络设备发送第七信息，该第七信息用于指示该终端设备请求该第一时间信息。
结合第五方面，在第五方面的某些实现方式中，该第五信息承载于信令无线承载1。
第六方面，提供了一种通信装置，该装置例如为第二网络设备，或者为第二网络设备中的芯片，包括：处理单元，用于生成第六信息，该第六信息用于指示该第二网络设备有第一时间信息，或者，该第六信息用于指示该第二网络设备的第一时间信息的精度高于该第一网络设备的第二时间信息的精度，其中，该第一时间信息包括协调世界时间UTC信息，全球定位系统GPS时间信息或本地时间信息中的至少一个；收发单元，向第一网络设备发送第六信息；该收发单元还用于向终端设备发送该第一时间信息。
结合第六方面，在第六方面的某些实现方式中，该第六信息中还包括以下一种或多种信息：
第一指示信息，用于指示承载该第一时间信息的第一资源；
第二指示信息，用于指示该第二网络设备是否在第一资源上广播该第一时间信息；
第三指示信息，该第三指示信息为请求消息的配置信息，该请求消息用于请求该第一时间信息。
第四指示信息，用于指示该第二网络设备的标识和/或该第二网络设备提供服务的小区的标识。
第五指示信息，用于指示通过专有信令接收该第一时间信息；
第六指示信息，用于指示通过专有信令向该第二网络设备请求该第一时间信息。
结合第六方面，在第六方面的某些实现方式中，该第六信息中包括该第一指示信息，该收发单元具体用于在该第一资源上发送该第一时间信息。
结合第六方面，在第六方面的某些实现方式中，该第一信息包括该第二网络设备的至少一个系统消息的调度信息，该调度信息包括该第一指示信息和/或该第二指示信息，该至少一个系统消息中的第一系统消息包括该第一时间信息。
结合第六方面，在第六方面的某些实现方式中，该第一信息包括第二指示信息，该第二指示信息指示结果为“是”，该收发单元还用于向该终端设备发送该第一时间信息。
结合第六方面，在第六方面的某些实现方式中，该第二指示信息指示的结果为“否”，该收发单元还用于接收来自终端设备的第三信息，其中，该第三信息用于请求该第一时间信息，该第三信息承载于随机接入过程的消息3。
结合第六方面，在第六方面的某些实现方式中，该第二指示信息指示的结果为“否”，且该第一信息包括该第三指示信息，该收发单元还用于接收来自终端设备的第四信息，该第四信息为该请求消息。
结合第六方面，在第六方面的某些实现方式中，该第三指示信息包括随机接入信道 RACH资源的配置信息和/或前导码的配置信息，该请求消息为发送在该RACH资源的该前导码。
结合第六方面，在第六方面的某些实现方式中，该收发单元还用于接收来自终端设备的第五信息，该第五信息用于请求该第一时间信息。
结合第六方面，在第六方面的某些实现方式中，该第五信息承载于信令无线承载3。
第七方面，提供了一种通信装置，包括处理器。可用于执行存储器中的指令，以实现上述第一方面以及第一方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器，该处理器与存储器耦合。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为终端设备。当该通信装置为终端设备时，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于终端设备中的芯片。当该通信装置为配置于终端设备中的芯片时，该通信接口可以是输入/输出接口。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第八方面，提供了一种通信装置，包括处理器。可用于执行存储器中的指令，以实现上述第二方面以及第二方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器，该处理器与存储器耦合。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为第一网络设备。当该通信装置为第一网络设备时，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于第一网络设备中的芯片。当该通信装置为配置于第一网络设备中的芯片时，该通信接口可以是输入/输出接口。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第九方面，提供了一种通信装置，包括处理器。可用于执行存储器中的指令，以实现上述第三方面以及第三方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器，该处理器与存储器耦合。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为第二网络设备。当该通信装置为第二网络设备时，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于第二网络设备中的芯片。当该通信装置为配置于第二网络设备中的芯片时，该通信接口可以是输入/输出接口。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第十方面，提供了一种处理器，包括：输入电路、输出电路和处理电路。该处理电路用于通过该输入电路接收信号，并通过该输出电路发射信号，使得该处理器执行第一方面至第三方面以及第一方面至第三方面中任一种可能实现方式中的方法。
在具体实现过程中，上述处理器可以为一个或多个芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是由例如但不限于接收器接收并输入的，输出电路所输出的信号可以是例如但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可 以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请实施例对处理器及各种电路的具体实现方式不做限定。
第十一方面，提供了一种通信装置，包括处理器和存储器。该处理器用于读取存储器中存储的指令，并可通过接收器接收信号，通过发射器发射信号，以执行第一方面或第三方面以及第一方面或第三方面中任一种可能实现方式中的方法。
可选地，该处理器为一个或多个，该存储器为一个或多个。
可选地，该存储器可以与该处理器集成在一起，或者该存储器与处理器分离设置。
在具体实现过程中，存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(read only memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
应理解，相关的数据交互过程例如发送指示信息可以为从处理器输出指示信息的过程，接收能力信息可以为处理器接收输入能力信息的过程。具体地，处理器输出的数据可以输出给发射器，处理器接收的输入数据可以来自接收器。其中，发射器和接收器可以统称为收发器。
上述第十一方面中的处理装置可以是一个或多个芯片。该处理装置中的处理器可以通过硬件来实现也可以通过软件来实现。当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于该处理器之外，独立存在。
第十二方面，提供了一种计算机程序产品，该计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当该计算机程序被运行时，使得计算机执行上述第一方面至第三方面以及第一方面至第三方面中任一种可能实现方式中的方法。
第十三方面，提供了一种计算机可读介质，该计算机可读介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述第一方面至第三方面以及第一方面至第三方面中任一种可能实现方式中的方法。
第十四方面，提供了一种通信系统，其包括前述的一个或多个终端设备和包括前述第一网络设备、第二网络设备的至少两个网络设备。
附图说明
图1是适用于本申请的通信系统的一例示意图。
图2是本申请实施例提供的信息的接收、发送方法的一示例性流程图。
图3是本申请实施例提供的信息的接收、发送方法的另一示例性流程图。
图4是本申请实施例提供的信息的接收、发送方法的另一示例性流程图。
图5是本申请实施例提供的信息的接收、发送方法的另一示例性流程图。
图6是适用于本申请实施例的通信装置的一例的示意性框图。
图7是适用于本申请实施例的终端设备的一例的示意性结构图。
图8是适用于本申请实施例的网络设备的一例的示意性结构图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通信(global system formobile communications，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、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、第五代(5th generation，5G)系统或新无线(new radio，NR)，车到其它设备(Vehicle-to-X V2X)，其中V2X可以包括车到互联网(vehicle to network，V2N)、车到车(vehicle to-Vehicle，V2V)、车到基础设施(vehicle to infrastructure，V2I)、车到行人(vehicle to pedestrian，V2P)等、车间通信长期演进技术(Long Term Evolution-Vehicle，LTE-V)、车联网、机器类通信(machine type communication，MTC)、物联网(Internet of Things，IoT)、机器间通信长期演进技术(Long Term Evolution-Machine，LTE-M)，机器到机器(Machine to Machine，M2M)等。
图1是适用于本申请实施例的无线通信系统100的一示意图。
本适用于本申请实施例的无线通信系统可以包括至少两个网络设备，如图1所示的无线通信系统100中的网络设备101、102。本适用于申请实施例的无线通信系统还可以包括至少一个终端设备，如图1所示的无线通信系统100中的终端设备103、104。该至少一个终端设备可以与该至少两个网络设备建立连接。例如，终端设备104采用双链接(dual connectivity，DC)的方式与网络设备101、102均建立连接。终端设备104可以获取主网络设备(或称主基站)的时间信息，当辅网络设备(或称辅基站)的时间信息的精度高于主网络设备时，可以采用本申请实施例提供的方法，根据主网络设备(即第一网络设备的一例)发送的第一信息，获取该辅网络设备的时间信息。该至少一个终端设备可以与至少两个网络设备中的一个网络设备建立连接，与另一个网络设备不建立连接例如，终端设备103与网络设备101建立连接，与网络设备102未建立连接，或者说，不处于网络设备102的连接状态(connected mode)，当网络设备102的时间信息的精度高于网络设备101的时间信息的精度时，可以采用本申请提供的实施例提供的方法，根据网络设备101(即第一网络设备的一例)的第一信息，获取网络设备102的时间信息。例如，终端设备103根据第一信息在网络设备102发送时间信息的第一资源上接收该时间信息，或者终端设备103向网络设备102发起的随机接入过程，在消息1(message 1，msg1)或消息3(message 3，msg3)中请求网络设备102发送第一时间信息，但本申请不限于此。
本申请实施例中的终端设备也可以称为用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无 线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等。
其中，可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，终端设备还可以是物联网(internet of things，IoT)系统中的终端设备。IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。
应理解，本申请对于终端设备的具体形式不作限定。
本申请实施例中的网络设备可以是任意一种具有无线收发功能的设备。该设备包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(Radio Network Controller，RNC)、节点B(Node B，NB)、基站控制器(Base Station Controller，BSC)、基站收发台(Base Transceiver Station，BTS)、家庭基站(例如，Home evolved NodeB，或Home Node B，HNB)、基带单元(BaseBand Unit，BBU)，无线保真(Wireless Fidelity，WIFI)系统中的接入点(Access Point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等，还可以为5G(如NR)系统中的gNB或传输点(TRP或TP)，或者，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)等。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括有源天线单元(active antenna unit，简称AAU)。CU实现gNB的部分功能，DU实现gNB的部分功能，比如，CU负责处理非实时协议和服务，实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能。DU负责处理物理层协议和实时服务，实现无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层和物理(physical，PHY)层的功能。AAU实现部分物理层处理功能、射频处理及有源天线的相关功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令，也可以认为是由DU发送的，或者，由DU+AAU发送的。可以理解的是，网络设备可以为包括CU节点、DU节点、AAU节点中一项或多项的设备。此外，可以将CU划分为接入网(radio access network，RAN)中的网络设备，也可以将CU划分为核心网(core network，CN)中的网络设备，本申请对此不做限定。
网络设备为小区提供服务，终端设备通过网络设备分配的传输资源(例如，频域资源，或者说，频谱资源)与小区进行通信，该小区可以属于宏基站(例如，宏eNB或宏gNB等)，也可以属于小小区(small cell)对应的基站，这里的小小区可以包括：城市小区(metro cell)、微小区(micro cell)、微微小区(pico cell)、毫微微小区(femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
为便于理解本申请实施例，首先对本申请中涉及到的术语做简单说明。
1、双连接(dual connection，DC)
DC是指终端设备同时连接到两个网络设备(例如，同时连接于两个基站)，可以有效提高传输的可靠性和传输速率。其中一个网络设备为主站点(master node，MN)，或称为主基站、主站或主网络设备，另外一个网络设备为辅助站点(secondary node，SN)，或者称为辅基站、辅站或辅网络设备，每个基站下都可以有若干个UE的服务小区。主基站和辅基站之间通过网络接口相连，其中至少主基站与核心网相连。如果主基站为LTE基站，辅基站为NR基站，称为EN-DC，如果主基站为NR基站，辅基站为LTE基站，称为NE-DC。如果主基站、辅基站均为NR基站，称为NR-DC。
2、信令无线承载(signal radio bearers，SRBs)
SRB为用于传输RRC信令和非接入层(non-access stratum，NAS)信令的无线承载(radio bearers，RBs)，包括SRB0，SRB1，SRB2，SRB3。其中SRB0使用公共控制信道(Common control channel,CCCH)，SRB1，SRB2，SRB3均使用专用控制信道(Dedicated control channel，DCCH)。SRB2用于承载NAS信令，SRB1在SRB2建立之前也可以传输NAS信令。在DC场景下，SRB0，SRB1，SRB2,均用于终端设备和主基站之间的信令传输。SRB3用于终端设备和辅基站之间的信令传输。
下面结合附图详细说明本申请实施例提供的侧行链路的通信方法。
图2是本申请实施例提供的信息接收、发送方法的一示意性流程图。
S210，第二网络设备向第一网络设备发送第六信息。
该第一网络设备接收来自该第二网络设备的该第六信息。
一种实施方式中，该第六信息指示该第二网络设备有第一时间信息。
作为示例非限定，该第一时间信息包括协调世界时间(coordinated universal time，UTC)信息、全球定位系统(global positioning system，GPS)时间信息或该第二网络设备的本地时间信息中的至少一种。
可选地，第二网络设备有第一时间信息表示第一网络设备服务的终端设备可以从第二网络设备获取第一时间信息。
另一种实施方式中，该第六信息用于指示该第二网络设备的第一时间信息的精度高于第二时间信息的精度，该第二时间信息为该第一网络设备的时间信息。
本申请中，该网络设备(例如，第一网络设备、第二网络设备)的时间信息的精度可以理解为该第二网络设备能够向终端设备指示的时间信息的精度。例如，该精度或单位可以是10毫秒ms、1ms、1微秒us或纳秒ns等，但本申请不限于此。
可选地，该第六信息包括该第二网络设备的接入技术类型信息，该第二网络设备的版本高于第一网络设备的版本。可选地，协议规定各个版本的网络设备能够为终端设备提供的时间信息的精度。第一网络设备可以根据第二网络设备提供的接入技术类型信息确定第 二网络设备的第一时间信息的精度是否高于第一网络设备的时间信息的精度。
例如，指示该第二网络设备为第四代(the 4 th generatinom，4G)移动通信系统的网络设备、5G移动通信系统的网络设备，但本申请不限于此。
可选地，该第六信息包括该第二网络设备的版本信息。
例如，该版本信息可以指示该第二网络设备的支持的通信标准的版本，例如，第三代合作伙伴计划(3rd generation partnership project，3GPP)指定的标准的版本(如，版本16、版本17)等，但不申请不限于此。
可选地，第六信息包括一个1比特指示位，该指示位指示“0”，表示该第一时间信息的精度高于该第二时间信息的精度；该指示位指示“1”，表示该第一时间信息的精度低于该第二时间信息的精度。或者反之，该指示位指示“1”，表示该第一时间信息的精度高于该第二时间信息的精度；该指示位指示“0”，表示该第一时间信息的精度低于该第二时间信息的精度。
另一种实施方式中，该第六信息用于指示该第二网络设备的第一时间信息的单位或精度。
例如，第二网络设备能够向终端设备指示的时间信息的精度为1ms。第六信息指示该第一时间信息的精度为1ms。
可选地，该第六信息包括该第二网络设备的第一时间信息。也就是说，第六信息直接指示该第二网络设备的第一时间信息，第一网络设备可以通过该第六信息获取该第一时间信息。
作为示例非限定，该第六消息可以承载在X2接口建立消息或Xn接口建立消息中。
可选地，该第六信息包括但不限于以下一种或多种信息：
第一指示信息，用于指示第二网络设备发送第二信息的第一资源，该第二信息包括该第一时间信息，或者说，该第一指示信息用于指示承载该第一时间信息的第一资源；
第二指示信息，用于指示该第二网络设备是否在第一资源上广播该第一时间信息；
第三指示信息，该第三指示信息为请求消息的配置信息，该请求消息用于请求该第一时间信息。
第四指示信息，用于指示该第二网络设备的标识和/或该第二网络设备提供服务的小区的标识。
第五指示信息，用于指示通过专有信令接收该第一时间信息；
第六指示信息，用于指示通过专有信令请求该第一时间信息。
其中，第二网络设备可以通过第一指示信息通知其发送第一时间信息的第一资源，当第六信息包括第一指示信息时，终端设备通过第一网络设备接收到该第一指示信息后，可以根据该第一指示信息确定该第一资源，并在该第一资源上接收该第一时间信息。
可选地，该第六信息包括第一指示信息时，还可以包括第二指示信息，该第二信息指示该第二网络设备是否在该第一指示信息指示的第一资源上发送了第一时间信息，以便终端设备通过第一网络设备接收到该第二指示信息后，确定该第二网络设备是否在第一资源上发送该第一时间信息。在第二网络设备没有在第一资源上发送该第一时间信息的情况下，终端设备可以发送请求消息，以请求第一网络设备发送该第一时间信息，以便终端设备在第一资源上获取该第一时间信息，具体实施方式可以参考下文中相关的描述，但本申 请不限于此。
可选地，该第六信息可以包括该第四指示信息，使得该第一网络设备接收到该第四指示信息或者该终端设备通过该第一网络设备接收到该第四指示信息后能够通过该第二网络设备的标识和/或该第二网络设备提供服务的小区的标识确定信息来源。
可选地，该第六信息可以包括第五指示信息和/或第六指示信息，终端设备通过第一网络设备接收到第一信息后，根据该第一信息是否包括该第五指示信息和/或第六指示信息后，可以确定是否通过专有信令接收或请求该第一时间信息。具体实施方式可以参考下文中相关的描述，但本申请不限于此。
根据上述方案，第二网络设备可以提供终端设备接收第一时间信息的辅助信息，以便终端设备能够接收到来自第二网络设备的该第一时间信息，使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。
可选地，在S220中，第一网络设备可以根据第六信息确定该第二网络设备的时间信息的精度高于该第一网络设备的时间信息的精度。
一种实施方式中，第一网络设备可以根据本地信息或与第二网络设备的交互信息(例如，版本信息等)确定该第二网络设备的时间信息的精度高于该第一网络设备的时间信息的精度。
另一种实施方式中，该第六信息用于指示该第二网络设备的第一时间信息的精度高于该第一网络设备的时间信息的精度。该第一网络设备根据接收到的第六信息确定该第一时间信息的精度高于该第一网络设备的时间信息的精度。
另一种实施方式中，该第六信息用于指示该第二网络设备的接入技术类型信息，该第一网络设备根据该第二网络设备的接入技术类型信息，确定该第二网络设备为版本高于该第一网络设备的版本，进而确定该第二网络设备的时间信息的精度高于该第二网络设备的时间信息的精度。
可选地，该第六信息包括第一时间信息的精度或单位。
也就是说，该第六信息包括第二网络设备能够向终端设备指示的时间信息的精度或单位。该第一网络设备接收到该第六信息后，比较第一网络设备和该第二网络设备能够向终端设备指示的时间信息的单位或精度的大小，确定该第二网络设备的时间信息的精度高于该第一网络设备的时间精度。
例如，该第一网络设备的时间信息的精度为10ms，该第六信息指示该第一时间信息的精度是1ms，该第一网络设备接收到该第六信息后，确定该第一时间信息的精度高于该第一网络设备的时间信息的精度。
S230，该第一网络设备向终端设备发送第一信息。
该第一信息用于指示第二网络设备有第一时间信息，或者，该第一信息用于指示终端设备获取第二网络设备的第一时间信息。
该终端设备从该第一网络设备接收该第一信息。该第一网络设备接收到该第二网络设备发送的第六信息后，根据第六信息生成第一信息并发送给终端设备，该第一信息用于通知终端设备该第二网络设备有第一时间信息，或者，该第一信息用于指示终端设备获取该第二网络设备的时间信息。
可选地，该第一信息包括但不限于以下一种或多种信息：
第一指示信息，用于指示第二网络设备发送第二信息的第一资源，该第二信息包括该第一时间信息，或者说，该第一指示信息用于指示承载该第一时间信息的第一资源；
第二指示信息，用于指示该第二网络设备是否在第一资源上广播该第一时间信息；
第三指示信息，该第三指示信息为请求消息的配置信息，该请求消息用于请求该第一时间信息。
第四指示信息，用于指示该第二网络设备的标识和/或该第二网络设备提供服务的小区的标识。
第五指示信息，用于指示通过专有信令接收该第一时间信息；
第六指示信息，用于指示通过专有信令请求该第一时间信息。
上述指示信息的实施方式可以参考S210中的描述，以及在下文中各个实施具体实施方式中具体实施方式，为了简要，在此不再赘述。
一种实施方式中，该第一信息包括该第一指示信息，终端设备在接收到该第一信息后，执行S260，在该第一指示信息指示的该第一资源上接收该第二终端设备发送的第一时间信息。
另一种实施方式中，终端设备根据该第一信息确定发送请求消息，该请求消息用于请求该第二网络设备发送第一时间信息。
在本申请中，终端设备可以通过但不限于以下两种方式请求该第二网络设备发送第一时间信息。
方式一
S240，该终端设备向该第二网络设备发送信息A，该信息A用于请求第二网络设备的第一时间信息。
该第二网络设备从该终端设备接收该信息A。
一种实施方式中，该终端设备同时连接于该第一网络设备和该第二网络设备，例如，该终端设备通过双连接的方式同时连接于该第一网络设备和该第二网络设备。该第二网络设备为双连接中的辅助网络设备(也可以称为辅站或辅基站)。
作为示例非限定，该终端设备通过信令无线承载3(signaling radio bearers，SRB)向该第二网络设备发送该信息A(即，第五信息的一例)，或者说，该信息A承载于该终端设备的SRB3。
可选地，该第一信息包括第六指示信息，该第六指示信息指示终端设备通过专有信令向第二网络设备请求该第一时间信息。终端设备在接收到包括该第六指示信息该第一信息后，该终端设备通过SRB3向第二网络设备发送该信息A，以请求该第二网络设备发送该第一时间信息。也就是说，该信息A为终端设备发送的专有信令。
另一种实施方式中，该信息A为随机接入过程中的消息3(msg 3)。
例如，终端设备在接收到该第一网络设备发送的第一信息后，确定向第二网络设备请求第一时间信息时，终端设备向第二网络设备发起随机接入过程，并在该随机接入过程的msg3中发送该信息A，以请求该第二网络设备的第一时间信息，但本申请不限于此。
另一种实施方式中，该第一信息中包括上述第三指示信息，该第三指示信息包括请求消息的配置信息，终端设备根据该第三指示信息向第二网络设备发送该信息A(即，第四信息的一例)，以请求该第二网络设备的该第一时间信息。例如，该第三指示信息可以指 示用于终端设备发送请求消息的第二资源，终端设备在该第二资源上发送该信息A，以请求该第二网络设备的时间信息，但本申请不限于此。
可选地，该第三指示信息包括随机接入信道(random access channel，RACH)资源的配置信息，和/或，前导码的配置信息。
终端设备在接收到该第一信息后，根据该第三指示信息发送该信息A，该信息A为发送在第三指示信息配置的RACH资源上的前导码，或者说，该信息A为用于请求第二网络设备的第一时间信息专用的随机接入过程的消息1(msg1)。
例如，第一网络设备向终端设备发送的该第一信息，并且在第一信息的第三指示信息中为该终端设备配置用于发送请求信息专用的RACH资源以及前导码，终端设备通过在该RACH资源上发送该前导码向第二网络设备请求该第一时间信息。该第二网络设备在该RACH资源上接收到终端设备发送的该前导码后，确定该终端设备请求该第二网络设备的时间信息，但本申请不限于此。
另一种实施方式中，该第一信息包括第一指示信息和/或第二指示信息，终端设备根据第一指示信息和/或第二指示信息的指示确定获取该第二网络设备的第一时间信息的执行步骤，例如，图3所示的示意性流程图。其中，图3所示的流程图中与图2相同或相似的部分可以参考图2中的描述，为了简要，再次不在赘述。
在本实施例中，S230后还可以包括S231。在S231中，该终端设备根据该第一信息中的第二指示信息确定该第二网络设备是否发送该第一时间信息。
或者，该终端设备根据该第一信息中的第二指示信息确定该第二网络设备是否发送第二信息，该第二信息包括该第一时间信息。
可选地，该第二指示信息指示该第二网络设备发送该第二信息，例如，该第二网络设备周期性地发送包括该第一时间信息的该第二信息，或第二网络设备在即将到来的一个第一资源上发送该第二信息，但本申请不限于此。也就是说，该第二指示信息指示的结果为“是”的情况下，该终端设备根据该第一指示信息确定该第二网络设备发送该第二信息的第一资源，并执行S260，即在该第一资源上接收该第二信息，以获得该第二网络设备的第一时间信息。
在一种可能的实施方式中，终端设备执行图3中的可能一。
S240，在该第二指示信息指示的结果为“否”的情况下，发送信息A1。
该第二指示信息指示该第二网络设备不发送第二信息，即该第二指示信息指示该第二网络设备不发送该第一时间信息(例如，该第二网络设备不周期性地发送该第二信息，或该第二网络设备不主动发送该第二信息，但本申请不限于此)，该终端设备向该第二网络设备发送信息A1(即，第三信息的一例)。
也就是说，该第二指示信息指示的结果为“否”的情况下，该终端设备向该第二网络设备发送信息A1，该信息A1用于请求该第二网络设备的第一时间信息。例如，该信息A1为随机接入过程中的msg 3，也就是说，终端设备在确定该第二网络设备不发送第一时间信息后，即向第二网络设备发起随机接入过程，终端设备首先向该第二网络设备发送msg 1，接收到第二网络设备发送的随机接入响应消息(即，msg 2)后，向该第二网络设备发送msg 3，该msg 3中包括向第二网络设备请求第一时间信息的该信息A1，但本申请不限于此。
可选地，该可能一可以是终端设备在该第二指示信息指示的结果为“否”，且该第一信息不包括该第一指示信息的情况下，发送信息A1。也就是说终端设备接收到第一信息后，根据第二指示信息的指示结果，确定第二网络设备周期发送或主动发送该第一时间信息。进一步地，终端设备还判断第一信息是否包括第二指示信息，若第一信息不包括第二指示信息，则终端设备向第二网络设备发送信息A1。也就是说，在该第二指示信息指示该第二网络设备不发送该第一时间信息，并且该第一信息中不包括请求信息的配置信息(或者说，没有为终端设备配置发送请求信息的资源)的情况下，终端设备通过向该第二网络设备发送信息A1请求该第二网络设备的第一时间信息。
在另一种可能的实施方式中，终端设备执行图3中的可能二。
S240，在该第二指示信息指示的结果为“否”，且该第一信息包括该第一指示信息的情况下，发送信息A2。
在该第二指示信息指示的结果为“否”，且该第一信息包括该第三指示信息的情况下，该终端设备根据该第三指示信息发送信息A2(即，第四信息的一例)，该信息A2用于请求该第二网络设备的第一时间信息。也就是说，在该第二指示信息指示该第二网络设备不发送该第一时间信息，并且第一信息中的第三指示信息为终端设备配置了用于发送请求信息的资源，则终端设备接收到该第一信息后，根据该第三指示信息发送请求信息(即信息A2)，请求该第二网络设备发送第一时间信息。
作为示例非限定，该第三指示信息包括RACH资源的配置信息和/或前导码的配置信息。也就是说，该信息A2为随机接入过程的msg1，该第三指示信息为终端设备配置了用于请求第二网络设备的第一时间信息的msg1的资源。
作为示例非限定，该第一时间信息承载于该第二网络设备发送的第一系统消息(system information block，SIB)。也就是说，该第二网络设备发送的第二信息为系统消息。
例如，该第二信息承载在该第二网络设备发送的SIB9中，该第二网络设备向该第一网络设备发送的该第六信息中包括该第二网络设备的系统消息的调度信息。该第一网络设备根据接收到的该第六信息生成该第一信息，该第一信息中包括该调度信息。
可选地，该调度信息可以包括第一指示信息，该第一指示信息可以包括第一时间间隔，该第一时间间隔用于终端设备确定该第一资源(即该第二网络设备发送包括该第一时间信息的资源)。例如，该第一资源与承载该第一信息的资源之间间隔第一时间间隔。终端设备在接收到该第一信息后，在间隔第一时间间隔的该第一资源上接收该第一时间信息。
可选地，该调度信息可以包括第一指示信息，该第一指示信息可以包括第二时间间隔，该第二时间间隔为终端设备接收该第二网络设备发送系统消息的时间间隔，例如，该第二时间间隔可以称为系统消息时间窗(SI window)，该SI window包括该第一资源(即该第二网络设备发送包括该第一时间信息的该SIB9的资源)，该SI window还可以包括该第二网络设备发送其他系统消息(即，SIB9以外的其他系统消息)的资源，也就是说，该系统消息的调度信息用于指示调度该第二网络设备发送的至少一个系统消息，本申请对此不作限定。例如，该调度信息可以写作“SI-SchedulingInfo”，本申请对此不作限定。
可选地，该第一指示信息还可以包括第一周期，该第一周期为该第二时间间隔的周期，也就是说，该第二时间间隔的资源是以第一周期为周期的周期性资源。可选地，该第一指 示信息还可以包括该第二网络设备的系统消息的调度列表，和/或，该SIB9在该第二网络设备的至少一个系统消息的调度列表中的序号。该终端设备可以根据该第一指示信息确定该第二网络设备发送SIB9的该第一资源。
可选地，该第三指示信息用于配置终端设备请求第二网络设备的系统消息的请求消息。例如，该第三指示信息可以写作“SI-RequestConfig”，本申请对此不作限定。
该第一信息中还包括第二指示信息，在该第二指示信息指示该第二网络设备不在系统消息窗中发送该SIB9，且该第一信息包括指示该第三指示信息的情况下，终端设备在接收到该第一信息后，确定该第二网络设备不周期性地发送或不主动发送SIB9，但通过第三指示信息为终端设备配置了请求第一时间信息的资源。终端设备可以根据该请求消息的配置信息，生成信息A2，并发送给该第二网络设备，以请求该第二网络设备的第一时间信息；
或者，在该第二指示信息指示该第二网络设备不发送该SIB9，且该第一信息不包括指示该第三指示信息的情况下，终端设备在接收到该第一信息后，确定该第二网络设备不周期性地发送或不主动发送SIB9，并且没有配置用于发送请求信息的资源，终端设备可以向该第二网络设备发起随机接入过程，即首先发送随机接入过程的msg1，在接收到该第二网络设备发送的随机接入响应消息msg2后，该终端设备向该第二网络设备发送msg3，该msg 3中包括信息A1，以请求该第二网络设备的第一时间信息。
方式二
S240，该终端设备向该第一网络设备发送信息B(即，第五信息的另一例)，该信息B用于指示该终端设备请求该第二网络设备的第一时间信息。
作为示例非限定，该信息B可以承载在随机接入过程中终端设备发送的消息中(例如，msg1或msg3)，或者，该信息B可以承载在终端设备发送的上行控制信息中。
可选地，该信息B承载于SRB1，也就是说，该终端设备可以通过SRB 1向该第一网络设备发送该信息B。
可选地，该第一信息包括第六指示信息，指示终端设备通过专有信令向该第一网络设备请求该第二网络设备发送该第一时间信息。终端设备接收到第一信息后，确定通过专有信令向该第一网络设备请求该第二网络设备发送该第一时间信息，则终端设备可以通过SRB 1向该第一网络设备发送该信息B。
该第一网络设备接收到该信息B后，确定该终端设备请求第二网络设备发送第一时间信息，并执行S241。
S241，该第一网络设备向该第二网络设备发送第七信息，该第七信息用于指示该终端设备请求该第二网络设备的第一时间信息。
该第二网络设备从该第一网络设备接收该第七信息。
S250，第二网络设备确定该终端设备请求第一时间信息。
该第二网路设备接收到该终端设备发送的信息A、信息A1或信息A2后，确定该终端设备请求该第二网络设备的时间信息。或者，该第二网络设备接收到该第一网络设备发送的该第七信息后，确定该终端设备请求该第二网络设备的第一时间信息。
S260，该第二网络设备向终端设备发送该第一时间信息。
或者说，该第二网络设备发送第二信息，该第二信息包括该第一时间信息。
可选地，第六信息和/或第一信息包括第五指示信息，该第五指示信息指示终端设备通过专有信令接收该第一时间信息。则该第二网络设备通过专有信令向该终端设备发送该第一时间信息。作为示例非限定，该专有信令可以通过SRB3发送。可选地，该专有信令可以是RRC消息或MAC EC。
可选地，该第二网络设备可以周期性地发送该第一时间信息，并在S210发送的第六信息中包括该第一指示信息，并通过第一网络设备通知终端设备发送第一时间信息的第一资源，和/或，发送该第一时间信息的周期。使得终端设备在执行S230后，根据该第一网络设备发送的第一信息确定该第一资源，并执行S260(也就是说，S240、S241、S250为可选步骤)，终端设备在该第一资源上接收该第二网络设备发送的第一时间信息。
可选地，该第二网络设备可以不主动发送该第二信息，在S240接收到终端设备发送的该信息A、信息A1或信息A2后，该第二网络设备向该终端设备发送该第一时间信息。或者，在S250接收到该第一网络设备发送的该第七信息后，该第二网络设备向该终端设备发送该第二信息。该终端设备通过接收到的该第二信息获取该第二网络设备的时间信息。
例如，该第二网络设备通过SRB3接收到终端设备发送的该信息A后，确定终端设备请求该第一时间信息，该第二网络设备向该终端设备发送该第一时间信息。
再例如，该第二网络设备通过系统消息广播该第一时间信息，例如，可以通过SIB9广播该第一时间信息。该第二网络设备接收到终端设备在随机接入过程中发送的信息A1(msg3)或信息A2(msg1)后，该第二网络设备确定该终端设备请求该网络设备发送SIB9，则该第二网络设备在第一资源上向该终端设备发送SIB9，该终端设备在第一资源上接收SIB9，并确定该SIB9中承载的该第一时间信息。
应理解，上述实施例中，各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。因此，在具体实施中可以选择其中的部分步骤或全部步骤进行实施，本申请对此不作限定。
根据上述方案，终端设备可以通过与其建立无线连接的第一网络设备的指示，接收来自其他网络设备的时间信息，使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。可选地，终端设备通过双连接的方式同时连接于该第一网络设备和该第二网络设备，该第一网络设备为主网络设备(例如，主基站)，该第二网络设备为辅助网络设备(例如，辅基站)。终端设备可以通过与主网络设备的指示，接收来自辅网络设备的时间信息，使得终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。在上述方案的可选实施方式中，在第二网络设备没有周期性地或主动地发送该第一时间信息时，终端设备还可以根据第一信息发送请求消息，以请求第二网络设备发送该第一时间信息，以便终端设备能够获得更高精度的时间信息，进而提高通信的可靠性。并且终端设备或的更高精度的时间信息，能够使终端设备进行一些高时间精度需求的通信业务，例如，车辆网中的安全驾驶、工业互联网中的安全生产等。
本申请实施例提供的方法还可以用于接收或发送第二网络设备的系统消息。图4为本实施例提供的信息接收、发送方法的另一例示意性流程图。
S410，第二网络设备向第一网络设备发送第六信息。
该第一网络设备接收来自该第二网络设备的该第六信息，该第六信息用于指示终端设 备接收该第二网络设备的第二系统消息。该第二系统消息可以包括上述第一时间信息，也可以是第二网络设备的其他系统消息，本申请对此不作限定。或者，该第六信息用于指示该第二网络设备有第二系统消息。
可选地，该第六信息包括但不限于以下一种或多种信息：
第一指示信息，该第一指示信息用于指示承载该第二系统消息的第一资源；
第二指示信息，用于指示该第二网络设备是否在第一资源上广播该第二系统消息；
第三指示信息，该第三指示信息为请求消息的配置信息，该请求消息用于请求该第二系统消息。
第四指示信息，用于指示该第二网络设备的标识和/或该第二网络设备提供服务的小区的标识。
第五指示信息，用于指示通过专有信令接收该第二系统消息；
第六指示信息，用于指示通过专有信令请求该第二系统消息。
作为示例非限定，该第六消息可以承载在X2接口建立消息或Xn接口建立消息中。
其中，第二网络设备可以通过第一指示信息通知其发送第二系统消息的第一资源，当第六信息包括第一指示信息时，终端设备通过第一网络设备接收到该第一指示信息后，可以根据该第一指示信息确定该第一资源，并在该第一资源上接收该第二系统消息。
可选地，该第六信息包括第一指示信息时，还可以包括第二指示信息，该第二信息指示该第二网络设备是否在该第一指示信息指示的第一资源上发送了第二系统消息，以便终端设备通过第一网络设备接收到该第二指示信息后，确定该第二网络设备是否在第一资源上发送该第二系统消息。在第二网络设备没有在第一资源上发送该第二系统消息的情况下，终端设备可以发送请求消息，以请求第一网络设备发送该第二系统消息，以便终端设备在第一资源上获取该第二系统消息，具体实施方式可以参考下文中相关的描述，但本申请不限于此。
可选地，该第六信息可以包括该第四指示信息，使得该第一网络设备接收到该第四指示信息或者该终端设备通过该第一网络设备接收到该第四指示信息后能够通过该第二网络设备的标识和/或该第二网络设备提供服务的小区的标识确定信息来源。
可选地，该第六信息可以包括第五指示信息和/或第六指示信息，终端设备通过第一网络设备接收到第一信息后，根据该第一信息是否包括该第五指示信息和/或第六指示信息后，可以确定是否通过专有信令接收或请求该第二系统消息。具体实施方式可以参考下文中相关的描述，但本申请不限于此。
根据上述方案，第二网络设备可以提供终端设备接收第二系统消息的辅助信息，以便终端设备能够接收到来自第二网络设备的该第二系统消息。
S420，该第一网络设备根据该第六信息，确定终端设备需要接收该第二网络设备的第二系统消息。
该第一网络设备接收到该第六信息后，确定需要终端设备接收该第二网络设备的第二系统消息。该第一网络设备根据该第六信息生成第一信息，该第一信息用于指示终端设备接收该第二网络设备的第二系统消息。
关于第一信息可以包括第一指示信息、第二指示信息、第三指示信息、第四指示信息、第五指示信息或第六指示信息中的一种或多种，具体关于各个指示信息的描述可以参考步 骤S410中的相关说明，此处不再赘述。
S430，该第一网络设备向该终端设备发送该第一信息，该第一信息用于指示终端设备接收该第二网络设备的第二系统消息。
一种实施方式中，该第六信息包括该第一指示信息，终端设备接收到该第一信息后，执行S460，在该第一指示信息指示的第一资源上接收该第二网络设备发送的该第二系统消息。
另一种实施方式中，终端设备根据该第一信息确定发送请求消息，该请求消息用于请求该第二网络设备发送第二系统消息。
在本申请中，终端设备可以通过但不限于以下两种方式请求该第二网络设备发送第二系统消息。
方式一
S440，该终端设备向该第二网络设备发送信息A，该信息A用于请求第二网络设备的第二系统消息。
一种实施方式中，终端设备通过SRB3向该第二网络设备发送该信息A，或者说，该信息A承载于该终端设备的SRB3。
可选地，该第一信息包括第六指示信息，该第六指示信息指示终端设备通过专有信令向第二网络设备请求该第二系统消息。终端设备根据该第六指示信息的指示通过SRB3向第二网络设备发送该信息A，以请求该第二网络设备发送该第二系统消息。也就是说，该信息A为终端设备发送的专有信令。
另一种实施方式中，终端设备通过随机接入过程中的消息3(msg 3)，请求该第二网络设备发送第二系统消息。
也就是说，该信息A承载于终端设备向该第二网络设备发起的随机接入过程中的msg3。
例如，终端设备接收到该第一信息后，确定接收该第二网络设备的该第二系统消息，则终端设备向该第二网络设备发起随机接入过程，并在该随机接入过程的msg3中包括信息A，以请求该第二网络设备发送该第二系统消息。
另一种实施方式中，该第一信息包括第三指示信息，该第三指示信息为终端设备配置发送请求消息的资源。则终端设备接收到该第一信息后，根据第三指示信息生成请求消息，即信息A，并向第二网络设备发送该信息A，以请求该第二网络设备发送该第二系统消息。
可选地，该第三指示信息包括RACH资源的配置信息和/或前导码的配置信息，该信息A为发送在该RACH资源上的前导码。该第二网络设备接收到该RACH资源上的该前导码后确定终端终端设备请求第二系统消息。
另一种实施方式中，该第一信息包括第一指示信息和/或第二指示信息。该终端设备根据该第一指示信息和/或该第二指示信息的指示确定获取该第二网络设备的第二系统消息的执行步骤。
该终端设备根据该第一信息中的第二指示信息确定该第二网络设备是否发送第二系统消息。
可选地，该第二指示信息指示该第二网络设备发送该第二系统消息，该终端设备根据该第一指示信息确定该第二网络设备发送该第二系统消息的第一资源，并执行S460，在 该第一资源上接收该第二网络设备发送的该第二系统消息。
可选地，该第二指示信息指示该第二网络设备不发送该第二系统消息，可以包括以下两种可能的实施方式。
应理解，本申请中所提及的该第二网络设备不发送可以理解为该第二网络设备不周期性的发送或不主动发送，但本申请不限于此。
可能一
该第二指示信息指示该第二网络设备不发送第二系统消息，即该第二指示信息指示该第二网络设备不发送该第一时间信息，该终端设备向该第二网络设备发送信息A1。
作为示例非限定，该信息A1可以承载于随机接入过程中的msg3。终端设备根据该第二指示信息确定该第二网络设备不发送该第二系统消息后，向第二网络设备发起随机接入过程，并msg 3中承载信息A1，以请求网络设备发送该第二系统消息。
可选地，在该第二指示信息指示该第二网络设备不发送第二系统消息，并且该第一信息不包括第三指示信息的情况下，发送信息A1。也就是说，终端设备接收到第一信息后，根据第二指示信息的指示结果，确定第二网络设备周期发送或主动发送该第二系统消息。进一步地，终端设备还判断第一信息是否包括第三指示信息，若第一信息不包括第三指示信息，则终端设备向第二网络设备发送信息A1，以请求网络设备发送该第二系统消息。
可能二
该第二指示信息指示该第二网络设备不发送第二系统消息，且该第一信息包括该第一指示信息的情况下，发送信息A2。
在该第二指示信息指示的结果为“否”，确定第二网络设备周期发送或主动发送该第二系统消息。进一步地，终端设备还判断第一信息是否包括第三指示信息，若第一信息包括第三指示信息，该终端设备根据该第三指示信息发送信息A2，以请求网络设备发送该第二系统消息。
可选地，该第三指示信息用于配置终端设备请求第二网络设备的系统消息的请求消息。例如，该第三指示信息可以写作“SI-RequestConfig”，本申请对此不作限定。
作为示例非限定，该第三指示信息包括RACH资源的配置信息和/或前导码的配置信息。也就是说，该信息A2为随机接入过程的msg1，该第三指示信息为终端设备配置了用于请求第二网络设备的第一时间信息的msg1的资源。
该第一信息中包括第二网络设备的系统消息的调度信息，该调度信息包括该第一指示信息。
可选地，该调度信息可以包括第一指示信息，该第一指示信息可以包括第一时间间隔，该第一时间间隔用于终端设备确定该第一资源(即该第二网络设备发送包括该第二系统消息的资源)。
可选地，该调度信息可以包括第一指示信息，该第一指示信息可以包括第二时间间隔，该第二时间间隔为终端设备接收该第二网络设备的系统消息的时间间隔，例如，该第二时间间隔可以称为系统消息时间窗(SI window)，该SI window包括该第一资源，该SI window还可以包括该第二网络设备发送其他系统消息(即，SIB9以外的其他系统消息)的资源，也就是说，该系统消息的调度信息用于指示调度该第二网络设备发送的至少一个系统消息，本申请对此不作限定。例如，该调度信息可以写作“SI-SchedulingInfo”，本申请对 此不作限定。
可选地，该第一指示信息还可以包括第一周期，该第一周期为该第二时间间隔的周期，也就是说，该第二时间间隔的资源是以第一周期为周期的周期性资源。可选地，该第一指示信息还可以包括该第二网络设备的系统消息的调度列表，和/或，该第二系统消息在该第二网络设备的至少一个系统消息的调度列表中的序号。该终端设备可以根据该第一指示信息确定该第二网络设备发送该第二系统消息的该第一资源。
方式二
S440，该终端设备向该第一网络设备发送信息B，该信息B用于指示该终端设备请求该第二网络设备的第二系统消息。
作为示例非限定，该信息B可以承载在随机接入过程中终端设备发送的消息中(例如，msg1或msg3)，或者，该信息B可以承载在终端设备发送的上行控制信息中。
可选地，该信息B承载于SRB1，也就是说，该终端设备可以通过SRB 1向该第一网络设备发送该信息B。
应理解，上述实施例中，各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。因此，在具体实施中可以选择其中的部分步骤或全部步骤进行实施，本申请对此不作限定。
根据上述方案，终端设备可以通过与其建立无线连接的第一网络设备的指示，接收来自其他网络设备的第二系统消息，使得终端设备能够获得其他网络设备的第二系统消息。可选地，终端设备通过双连接的方式同时连接于该第一网络设备和该第二网络设备，该第一网络设备为主网络设备(例如，主基站)，该第二网络设备为辅助网络设备(例如，辅基站)。终端设备可以通过与主网络设备的指示，接收来自辅网络设备的系统消息，使得终端设备能够获得辅网络设备的第二系统消息，进而提高通信的可靠性。在上述方案的可选实施方式中，在第二网络设备没有周期性地或主动地发送该第二系统消息时，终端设备还可以根据第一信息发送请求消息，以请求第二网络设备发送该第二系统消息，以便终端设备能够获得该第二系统消息。
本申请实施例提供的方法还可以用于接收或发送第二网络设备的系统消息。图5为本实施例提供的信息接收、发送方法的另一例示意性流程图。
S510，终端设备向第一网络设备发送第一消息，该第一消息用于请求该第一网络设备的第八系统信息。
该第一网络设备接收来自该终端设备的该第一消息。
该第八系统信息包含该终端设备需要的至少一个系统信息块。可选地，该第一消息可以承载于终端设备向第一网络设备发起的随机接入过程的消息3(Msg3)中。作为示例非限定，该第一消息可以写作“RRCSystemInfoRequest”。
一种可能的实现方式中，该第一消息中包含第七指示信息，该第七指示信息用于指示该终端设备需要的至少一个系统信息消息，所述至少一个系统信息消息中包括终端设备需要的至少一个系统信息块。
可选地，该第七指示信息可以指示该终端设备需要的至少一个系统信息消息。
可选地，该第七指示信息可以包括比特串(bit map)，该比特串中的每一个比特位对应一个系统信息消息。
作为示例非限定，该第七指示信息中的比特串中的比特位置“1”时表示该比特位对应的系统信息消息被终端设备请求，或者反之，比特位置“0”时表示该比特位对应的系统信息消息被终端设备请求。
一种实施方式中，该第一消息可以包含第八指示信息，所述第八指示信息用于指示该终端设备请求的系统消息的类型是否为第三系统消息。或者，所述第八指示信息用于指示该终端设备请求的系统消息的类型为第三系统消息还是该第四系统消息。
其中，该第三系统消息为与定位相关的系统消息，该第三系统消息可以包括一个或多个系统信息块。例如，包括定位辅助信息的系统信息块。该第三系统消息可以写作“posSIB”，在第三系统消息包括多个与定位相关的系统信息块的情况下，可以对其进行编号，例如可以写作“posSIB1”、“posSIB2”等，但本申请不限于此。
该第四系统消息可以是该第三系统消息以外的，例如，该第四系统消息可以包含小区重选信息的系统信息块2(SIB2)、包含小区重选相关信息的系统信息块3(SIB3)等系统信息。
在该第八指示信息指示该终端设备请求的系统消息的类型为第三系统消息的情况下，该第七指示信息中的比特串与第一调度列表中的系统信息消息相对应，该第一调度列表用于调度第三系统消息类型的系统信息消息，该比特串可以与该第一调度列表中的系统信息消息依次对应，即第一比特位对应该调度列表中的第一个系统信息消息，第二比特位对应该调度列表中的第二个系统信息消息，依次类推。
在该第八指示信息指示该终端设备请求的系统消息的类型为第四系统消息的情况下，该第七指示信息中的比特串与第二调度列表中的系统信息消息相对应，该第二调度列表用于调度第四系统消息类型的系统信息消息，该比特串可以与该第二调度列表中的系统信息块依次对应，即第一比特位对应该调度列表中的第一个系统信息消息，第二比特位对应该调度列表中的第二个系统信息消息，依次类推。
可选地，该第八指示信息可以包括一个比特位，该比特位用于指示该终端设备请求的系统消息是否是该第三系统消息。例如，该比特位指示“1”时，表示该终端设备请求的系统消息是否是该第三系统消息，或者，该比特位指示“0”时，表示该终端设备请求的系统消息是否是该第三系统消息。
可选地，可以利用现有NR系统中的系统消息请求信息(RRCSystemInfoRequest)中的预留的12比特来指示该终端设备请求的系统消息的类型是否为第三系统消息。或者，指示该终端设备请求的系统信息块的类型为第三系统消息还是该第四系统消息。
例如，当该RRCSystemInfoRequest中的该12比特位为全“1”时表示该终端设备请求的系统消息的类型为第三系统消息。或者，当该RRCSystemInfoRequest中的该12比特位为某几个比特为“1”时表示该终端设备请求的系统消息的类型为第四系统消息，但本申请不限于此。
另一种实施方式中，该第一消息可以包含第九指示信息，该第九指示信息用于指示该第七指示信息中指示第三系统消息中的信息块的比特位，和/或，该第九指示信息用于指示该第七指示信息中指示第四系统消息中的信息块的比特位，
作为示例非限定，该第九指示信息可以包括N个比特位，该四个比特位用于指示K，其中，K大于0小于或等于2 N。则该第九指示信息指示该第七指示信息中的前K个比特 与第一调度列表相对应，该第七指示信息中的其他比特与该第二调度列表相对应。即前K个比特用于指示终端设备是否请求第一调度列表中前K个系统信息消息，后N-K个比特用于指示终端设备是否请求第二调度列表中的的前N-K个系统信息消息。也就是说，该第七指示信息的前K个比特用于指示终端设备请求的第三系统消息类型的系统信息消息，该第七指示信息中的其他比特指示终端设备请求的第四系统消息类型的系统信息消息。
或者反之，该第九指示信息指示该第七指示信息中的前K个比特与第二调度列表相对应，该第七指示信息中的其他比特与该第一调度列表相对应，本申请对此不作限定。
S520，第一网络设备根据该第一消息，确定终端设备请求的至少一个系统信息消息。
该第一网络设备接收到第一消息后，根据第一消息中的第八指示信息，确定该第七指示信息的比特串对应的系统信息消息，例如，该比特串仅与第三系统消息的系统信息消息相对应，或者，该比特串仅与第四系统消息的系统信息消息相对应，再或者，该比特串可以部分对应第三系统消息中的系统信息消息，部分比特对应第四系统消息中的系统信息消息。该第一网络设备再根据该第七指示信息确定终端设备请求的一个或多个系统信息消息。
S530，该第一网络设备向该终端设备发送其请求的该至少一个系统信息消息。
该终端设备接收来自该第一网络设备发送的该一个或多个系统信息消息。
根据上述方案，能够使终端设备与第一网络设备对终端设备请求的系统信息消息达成一致，以便第一网络设备向该终端设备发送其请求的系统信息消息。进而减小了错误发生的概率，能够保证通信的可靠性。
以上，结合图2至图5详细说明了本申请实施例提供的方法。以下，结合图6至图8详细说明本申请实施例提供的装置。
图6是本申请实施例提供的通信装置的示意性框图。如图6所示，该通信装置1500可以包括处理单元1510和收发单元1520。
在一种可能的设计中，该通信装置1500可对应于上文方法实施例中的终端设备，例如，可以为终端设备，或者配置于终端设备中的芯片。
应理解，该通信装置1500可对应于根据本申请实施例的方法200、300、400、500中的终端设备，该通信装置1500可以包括用于执行图2、图3、图4、图5中的方法200、300、400、500中终端设备执行的方法的单元。并且，该通信装置1500中的各单元和上述其他操作和/或功能分别为了实现图2、图3、图4、图5中的方法200、300、400、500的相应流程。
其中，当该通信装置1500用于执行图2中的方法200，收发单元1520可用于执行方法200中的S230、S240、S260。当该通信装置1500用于执行图3中的方法300，收发单元1520可用于执行方法300中的S230、S240、S260，处理单元1510可用于执行方法300中的S231。当该通信装置1500用于执行图4中的方法400，收发单元1520可用于执行方法400中的S430、S440、S460。当该通信装置1500用于执行图5中的方法500，收发单元1520可用于执行方法500中的S510、S530。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置1500为终端设备时，该通信装置1500中的收发单元1520可对应于图7中示出的终端设备2000中的收发器2020，该通信装置1500中的处理单元1510 可对应于图7中示出的终端设备2000中的处理器2010。
还应理解，该通信装置1500为终端设备时，该通信装置1500中的收发单元1520可通过通信接口(如收发器或输入/输出接口)实现，例如可对应于图7中示出的终端设备2000中的收发器2020，该通信装置1500中的处理单元1510可通过至少一个处理器实现，例如可对应于图7中示出的终端设备2000中的处理器2010，该通信装置1500中的处理单元1510还可以通过至少一个逻辑电路实现。
可选地，通信装置1500还可以包括处理单元1510，该处理单元1510可以用于处理指令或者数据，以实现相应的操作。
可选地，通信装置1500还可以包括存储单元，该存储单元可以用于存储指令或者数据，处理单元可以调用该存储单元中存储的指令或者数据，以实现相应的操作。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
在另一种可能的设计中，该通信装置1500可对应于上文方法实施例中的网络设备，例如，可以为网络设备，或者配置于网络设备中的芯片。
应理解，该通信装置1500可对应于根据本申请实施例的方法200、300、400、500中的第一网络设备，该通信装置1500可以包括用于执行图2、图3、图4、图5中的方法200、300、400、500中第一网络设备执行的方法的单元。并且，该通信装置1500中的各单元和上述其他操作和/或功能分别为了实现图2、图3、图4、图5中的方法200、300、400、500的相应流程。
其中，当该通信装置1500用于执行当该通信装置1500用于执行图2中的方法200，收发单元1520可用于执行方法200中的S210、S230、S240、S241，处理单元1510可用于执行方法200中的S220。当该通信装置1500用于执行当该通信装置1500用于执行图3中的方法300，收发单元1520可用于执行方法300中的S210、S230，处理单元1510可用于执行方法200中的S220。当该通信装置1500用于执行当该通信装置1500用于执行图4中的方法400，收发单元1520可用于执行方法400中的S410、S430、S440、S441，处理单元1510可用于执行方法400中的S420。当该通信装置1500用于执行当该通信装置1500用于执行图5中的方法500，收发单元1520可用于执行方法500中的S510、S530，处理单元1510可用于执行方法500中的S520。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
应理解，该通信装置1500可对应于根据本申请实施例的方法200、300、400中的第二网络设备，该通信装置1500可以包括用于执行图2、图3、图4中的方法200、300、400中第二网络设备执行的方法的单元。并且，该通信装置1500中的各单元和上述其他操作和/或功能分别为了实现图2、图3、图4中的方法200、300、400的相应流程。
其中，当该通信装置1500用于执行当该通信装置1500用于执行图2中的方法200，收发单元1520可用于执行方法200中的S210、S240、S260，处理单元1510可用于执行方法200中的S250。当该通信装置1500用于执行当该通信装置1500用于执行图3中的方法300，收发单元1520可用于执行方法300中的S210、S240、S260，处理单元1510可用于执行方法200中的S250。当该通信装置1500用于执行当该通信装置1500用于执行图4中的方法400，收发单元1520可用于执行方法400中的S410、S440、S441、S460， 处理单元1510可用于执行方法400中的S450。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置1500为网络设备时，该通信装置1500中的收发单元为可对应于图8中示出的网络设备3000中的收发器3100，该通信装置1500中的处理单元1510可对应于图8中示出的网络设备3000中的处理器3202。
可选地，通信装置1500还可以包括处理单元1510，该处理单元1510可以用于处理指令或者数据，以实现相应的操作。
可选地，通信装置1500还可以包括存储单元，该存储单元可以用于存储指令或者数据，处理单元可以调用该存储单元中存储的指令或者数据，以实现相应的操作。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置1500为网络设备时，该通信装置1500中的收发单元1520为可通过通信接口(如收发器或输入/输出接口)实现，例如可对应于图8中示出的网络设备3000中的收发器3100，该通信装置1500中的处理单元1510可通过至少一个处理器实现，例如可对应于图8中示出的网络设备3000中的处理器3202，该通信装置1500中的处理单元1510可通过至少一个逻辑电路实现。
图7是本申请实施例提供的终端设备2000的结构示意图。该终端设备2000可应用于如图1所示的系统中，执行上述方法实施例中终端设备的功能。如图所示，该终端设备2000包括处理器2010和收发器2020。可选地，该终端设备2000还包括存储器2030。其中，处理器2010、收发器2020和存储器2030之间可以通过内部连接通路互相通信，传递控制和/或数据信号，该存储器2030用于存储计算机程序，该处理器2010用于从该存储器2030中调用并运行该计算机程序，以控制该收发器2020收发信号。可选地，终端设备2000还可以包括天线2040，用于将收发器2020输出的上行数据或上行控制信令通过无线信号发送出去。
上述处理器2010可以和存储器2030可以合成一个处理装置，处理器2010用于执行存储器2030中存储的程序代码来实现上述功能。具体实现时，该存储器2030也可以集成在处理器2010中，或者独立于处理器2010。该处理器2010可以与图6中的处理单元对应。
上述收发器2020可以与图6中的收发单元对应。收发器2020可以包括接收器(或称接收机、接收电路)和发射器(或称发射机、发射电路)。其中，接收器用于接收信号，发射器用于发射信号。
应理解，图7所示的终端设备2000能够实现图2、图3、图4所示方法实施例中涉及终端设备的各个过程。终端设备2000中的各个模块的操作和/或功能，分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述，为避免重复，此处适当省略详细描述。
上述处理器2010可以用于执行前面方法实施例中描述的由终端设备内部实现的动作，而收发器2020可以用于执行前面方法实施例中描述的终端设备向网络设备发送或从网络设备接收的动作。具体请见前面方法实施例中的描述，此处不再赘述。
可选地，上述终端设备2000还可以包括电源2050，用于给终端设备中的各种器件或 电路提供电源。
除此之外，为了使得终端设备的功能更加完善，该终端设备2000还可以包括输入单元2060、显示单元2070、音频电路2080、摄像头2090和传感器2100等中的一个或多个，所述音频电路还可以包括扬声器2082、麦克风2084等。
图8是本申请实施例提供的网络设备的结构示意图，例如可以为网络设备的相关结构的示意图。
应理解，图8所示的网络设备3000能够实现图2、图3、图4所示方法实施例中涉及网络设备的各个过程。网络设备3000中的各个模块的操作和/或功能，分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述，为避免重复，此处适当省略详细描述。
应理解，图8所示出的网络设备3000仅为网络设备的一种可能的架构，而不应对本申请构成任何限定。本申请所提供的方法可适用于其他架构的网络设备。例如，包含CU、DU和AAU的网络设备等。本申请对于网络设备的具体架构不作限定。
本申请实施例还提供了一种处理装置，包括处理器和接口；所述处理器用于执行上述任一方法实施例中的方法。
应理解，上述处理装置可以是一个或多个芯片。例如，该处理装置可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是专用集成芯片(application specific integrated circuit，ASIC)，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
应注意，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行图2、图3、图4所示实施例中的方法。
根据本申请实施例提供的方法，本申请还提供一种计算机可读介质，该计算机可读介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行图2、图3、图4所示实施例中的方法。
根据本申请实施例提供的方法，本申请还提供一种系统，其包括前述的一个或多个终端设备以及一个或多个网络设备。
上述各个装置实施例中网络设备与终端设备和方法实施例中的网络设备或终端设备完全对应，由相应的模块或单元执行相应的步骤，例如通信单元(收发器)执行方法实施例中接收或发送的步骤，除发送、接收外的其它步骤可以由处理单元(处理器)执行。具体单元的功能可以参考相应的方法实施例。其中，处理器可以为一个或多个。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disc，SSD))等。
上述各个装置实施例中网络设备与终端设备和方法实施例中的网络设备或终端设备完全对应，由相应的模块或单元执行相应的步骤，例如通信单元(收发器)执行方法实施 例中接收或发送的步骤，除发送、接收外的其它步骤可以由处理单元(处理器)执行。具体单元的功能可以参考相应的方法实施例。其中，处理器可以为一个或多个。
在本说明书中使用的术语“部件”、“模块”、“系统”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在2个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地和/或远程进程来通信。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，各功能单元的功能可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令(程序)。在计算机上加载和执行所述计算机程序指令(程序)时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的 服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (30)

  1. 一种通信方法，其特征在于，包括：
    接收来自第一网络设备的第一信息，所述第一信息用于指示第二网络设备有第一时间信息，所述第一时间信息包括协调世界时间UTC信息、全球定位系统GPS时间信息或本地时间信息中的至少一个；
    根据所述第一信息接收来自所述第二网络设备的所述第一时间信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一时间信息的精度高于第二时间信息的精度，所述第二时间信息为所述第一网络设备的时间信息。
  3. 根据权利要求2所述的方法，其特征在于，所述第一信息中还包括以下一种或多种信息：
    第一指示信息，用于指示承载所述第一时间信息的第一资源；
    第二指示信息，用于指示所述第二网络设备是否在第一资源上广播所述第一时间信息；
    第三指示信息，所述第三指示信息为请求消息的配置信息，所述请求消息用于请求所述第一时间信息；
    第四指示信息，用于指示所述第二网络设备的标识和/或所述第二网络设备提供服务的小区的标识；
    第五指示信息，用于指示通过专有信令接收所述第一时间信息；
    第六指示信息，用于指示通过专有信令向所述第二网络设备请求所述第一时间信息。
  4. 根据权利要求3所述的方法，其特征在于，所述第一信息包括所述第二网络设备的至少一个系统消息的调度信息，所述调度信息包括所述第一指示信息和/或所述第二指示信息，所述至少一个系统消息中的第一系统消息包括所述第一时间信息。
  5. 根据权利要求3或4所述的方法，其特征在于，所述第一信息包括第二指示信息，以及，所述根据所述第一信息接收来自所述第二网络设备的所述第一时间信息，包括：
    当所述第二指示信息指示结果为“是”时，接收来此所述第二网络设备的所述第一时间信息。
  6. 根据权利要求3或4所述的方法，其特征在于，所述第二指示信息指示的结果为“否”，所述方法还包括：
    向所述第二网络设备发送第三信息，其中，所述第三信息用于请求所述第一时间信息，所述第三信息承载于随机接入过程的消息3。
  7. 根据权利要求3或4所述的方法，其特征在于，所述第二指示信息指示的结果为“否”，且所述第一信息包括所述第三指示信息，所述方法还包括：
    根据所述第三指示信息发送第四信息，所述第四信息为所述请求消息。
  8. 根据权利要求3至7中任一项所述的方法，其特征在于，所述第三指示信息包括随机接入信道RACH资源的配置信息和/或前导码的配置信息，所述请求消息为发送在所述RACH资源的所述前导码。
  9. 根据权利要求1至3中任一项所述的方法，其特征在于，所述方法还包括：
    发送第五信息，所述第五信息用于请求所述第一时间信息。
  10. 根据权利要求9所述的方法，其特征在于，所述第五信息承载于信令无线承载1，或者，所述第五信息承载于信令无线承载3。
  11. 一种通信方法，其特征在于，包括：
    接收来自第二网络设备的第六信息，所述第六信息用于指示所述第二网络设备有第一时间信息，或者，所述第六信息用于指示所述第二网络设备的第一时间信息的精度高于所述第一网络设备的第二时间信息的精度，其中，所述第一时间信息包括协调世界时间UTC信息，全球定位系统GPS时间信息或本地时间信息中的至少一个；
    向终端设备发送第一信息，所述第一信息用于指示第二网络设备有所述第一时间信息。
  12. 根据权利要求11所述的方法，其特征在于，所述第六信息和/或所述第一信息包括以下信息中的一项或多项：
    第一指示信息，用于指示承载所述第一时间信息的第一资源；
    第二指示信息，用于指示所述第二网络设备是否在第一资源上广播所述第一时间信息；
    第三指示信息，所述第三指示信息为请求消息的配置信息，所述请求消息用于请求所述第一时间信息；
    第四指示信息，用于指示所述第二网络设备的标识和/或所述第二网络设备提供服务的小区的标识；
    第五指示信息，用于指示通过专有信令接收所述第一时间信息；
    第六指示信息，用于指示通过专有信令向所述第二网络设备请求所述第一时间信息。
  13. 根据权利要求12所述的方法，其特征在于，所述第一信息包括所述第二网络设备的至少一个系统消息的调度信息，所述调度信息包括所述第一指示信息和/或所述第二指示信息，所述至少一个系统消息中的第一系统消息包括所述第一时间信息。
  14. 根据权利要求13所述的方法，其特征在于，所述第三指示信息包括随机接入信道RACH资源的配置信息和/或前导码的配置信息，所述请求消息为发送在所述RACH资源的所述前导码。
  15. 根据权利要求11至14中任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述终端设备的第五信息，所述第五信息用于指示请求所述第一时间信息；
    向所述第二网络设备发送第七信息，所述第七信息用于指示所述终端设备请求所述第一时间信息。
  16. 根据权利要求15所述的方法，其特征在于，所述第五信息承载于信令无线承载1。
  17. 一种通信方法，其特征在于，包括：
    向第一网络设备发送第六信息，所述第六信息用于指示所述第二网络设备有第一时间信息，或者，所述第六信息用于指示所述第二网络设备的第一时间信息的精度高于所述第一网络设备的第二时间信息的精度，其中，所述第一时间信息包括协调世界时间UTC信息，全球定位系统GPS时间信息或本地时间信息中的至少一个；
    向终端设备发送所述第一时间信息。
  18. 根据权利要求17所述的方法，其特征在于，所述第六信息中还包括以下一种或多种信息：
    第一指示信息，用于指示承载所述第一时间信息的第一资源；
    第二指示信息，用于指示所述第二网络设备是否在第一资源上广播所述第一时间信息；
    第三指示信息，所述第三指示信息为请求消息的配置信息，所述请求消息用于请求所述第一时间信息；
    第四指示信息，用于指示所述第二网络设备的标识和/或所述第二网络设备提供服务的小区的标识；
    第五指示信息，用于指示通过专有信令接收所述第一时间信息；
    第六指示信息，用于指示通过专有信令向所述第二网络设备请求所述第一时间信息。
  19. 根据权利要求18所述的方法，其特征在于，所述第六信息中包括所述第一指示信息，所述向终端设备发送所述第一时间信息，包括：
    在所述第一资源上发送所述第一时间信息。
  20. 根据权利要求18或19所述的方法，其特征在于，所述第一信息包括所述第二网络设备的至少一个系统消息的调度信息，所述调度信息包括所述第一指示信息和/或所述第二指示信息，所述至少一个系统消息中的第一系统消息包括所述第一时间信息。
  21. 根据权利要求18或19所述的方法，其特征在于，所述第一信息包括第二指示信息，以及，向终端设备发送所述第一时间信息，包括：
    当所述第二指示信息指示结果为“是”时，向所述终端设备发送所述第一时间信息。
  22. 根据权利要求18或19所述的方法，其特征在于，所述第二指示信息指示的结果为“否”，所述方法还包括：
    接收来自终端设备的第三信息，其中，所述第三信息用于请求所述第一时间信息，所述第三信息承载于随机接入过程的消息3。
  23. 根据权利要求18或19所述的方法，其特征在于，所述第二指示信息指示的结果为“否”，且所述第一信息包括所述第三指示信息，所述方法还包括：
    接收来自终端设备的第四信息，所述第四信息为所述请求消息。
  24. 根据权利要求18至23中任一项所述的方法，其特征在于，所述第三指示信息包括随机接入信道RACH资源的配置信息和/或前导码的配置信息，所述请求消息为发送在所述RACH资源的所述前导码。
  25. 根据权利要求17至24中任一项所述的方法，其特征在于，所述方法还包括：
    接收来自终端设备的第五信息，所述第五信息用于请求所述第一时间信息。
  26. 根据权利要求25所述的方法，其特征在于，所述第五信息承载于信令无线承载3。
  27. 一种通信装置，其特征在于，包括至少一个处理器和通信接口，与存储器耦合；
    所述通信接口用于接收输入所述通信装置的信号或用于从所述通信装置输出信号；
    所述存储器用于存储程序或指令；
    所述至少一个处理器用于执行所述程序或指令，以使所述装置实现如权利要求1至26中任一项所述的方法。
  28. 一种计算机可读存储介质，包括计算机程序，当其由一个或多个处理器执行时，使得包括所述处理器的装置执行如权利要求1至10中任一项所述的方法，或者执行如权利要求11至16中任一项所述的方法，或者执行如权利要求17至26中任一项所述的方法。
  29. 一种芯片，其特征在于，包括至少一个处理器和通信接口；
    所述通信接口用于接收输入所述芯片的信号或用于从所述芯片输出信号，所述处理器与所述通信接口通信且通过逻辑电路或执行代码指令用于实现如权利要求1至10中任一项所述的方法，或者实现如权利要求11至16中任一项所述的方法，或者实现如权利要求17至26中任一项所述的方法。
  30. 一种通信装置，其特征在于，包括收发单元和至少一个处理单元；
    所述收发单元用于接收输入所述通信装置的信号并传输至所述至少一个处理单元，或输出来自于所述至少一个处理单元的信号，所述至少一个处理单元用于执行程序或指令，以使所述通信装置实现如权利要求1至10中任一项所述的方法，或者实现如权利要求11至16中任一项所述的方法，或者实现如权利要求17至26中任一项所述的方法。
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