WO2020056667A1 - 车联网同步方法及装置 - Google Patents

车联网同步方法及装置 Download PDF

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Publication number
WO2020056667A1
WO2020056667A1 PCT/CN2018/106711 CN2018106711W WO2020056667A1 WO 2020056667 A1 WO2020056667 A1 WO 2020056667A1 CN 2018106711 W CN2018106711 W CN 2018106711W WO 2020056667 A1 WO2020056667 A1 WO 2020056667A1
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WIPO (PCT)
Prior art keywords
period
terminal
specified
synchronization signal
network signal
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PCT/CN2018/106711
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English (en)
French (fr)
Inventor
刘洋
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北京小米移动软件有限公司
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Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to US17/277,727 priority Critical patent/US11917562B2/en
Priority to PCT/CN2018/106711 priority patent/WO2020056667A1/zh
Priority to ES18934208T priority patent/ES2955167T3/es
Priority to EP18934208.2A priority patent/EP3855773B1/en
Priority to CN201880001888.7A priority patent/CN109314845B/zh
Publication of WO2020056667A1 publication Critical patent/WO2020056667A1/zh

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    • 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
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • 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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0644—External master-clock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/002—Mutual synchronization
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R20/00—Setting the time according to the time information carried or implied by the radio signal
    • G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a method and a device for synchronizing the Internet of Vehicles.
  • V2X Vehicle and Everything
  • V2V Vehicle and Vehicle
  • V2I Vehicle and Infrastructure
  • V2P Vehicle and Pedestrian
  • the existing cellular communication technology can be used to support V2X communication, that is, the communication link between the terminal device and the base station in the original cellular network is used for communication; it can also be performed directly through the direct link between the devices. Communication.
  • LTE Long Term Evolution, Long Term Evolution
  • V2X communication can only support some basic security V2X applications. Therefore, in order to support new V2X services and meet new V2X technical requirements, New Radio (NR) V2X communications need to provide higher communication rates, shorter communication delays, and more reliable communication quality.
  • NR New Radio
  • the embodiments of the present disclosure provide a method and device for synchronizing the Internet of Vehicles.
  • a method for synchronizing a connected vehicle is provided.
  • the method is used for a first terminal, and the first terminal is used to characterize a sender of a direct synchronization signal.
  • the method includes:
  • the sending period of the direct synchronization signal is adjusted according to a set rule to obtain an adjusted second network signal condition. Period, the second period is different from the first period;
  • the setting rule includes a specified correspondence between a specified network signal condition and a specified sending period
  • the adjusting the sending cycle of the direct synchronization signal according to a set rule to obtain an adjusted second cycle includes:
  • the first network signal condition includes at least one of the following:
  • the signal strength of the global navigation satellite system GNSS is greater than a first specified threshold
  • the signal strength of the base station is greater than a second specified threshold.
  • the second network signal condition includes at least one of the following:
  • the signal strength of the GNSS is less than the first specified threshold
  • the signal strength of the base station is less than the second specified threshold.
  • the setting rule includes a first specified period set
  • the adjusting the sending cycle of the direct synchronization signal according to a set rule to obtain an adjusted second cycle includes:
  • the sending the direct synchronization signal to one or more second terminals according to the second period includes:
  • the first terminal is in a direct connection communication state, sending the direct connection synchronization signal to the second terminal through dedicated signaling and according to the second period;
  • the directly connected synchronization signal is sent to the second terminal through a physical directly connected broadcast channel PSBCH and according to the second period.
  • the dedicated signaling includes radio resource control RRC signaling.
  • the first network signal condition includes at least one of the following:
  • the strength of the GNSS signal is less than a third specified threshold
  • the signal strength of the base station is less than a fourth specified threshold.
  • the second network signal condition includes at least one of the following:
  • the strength of the GNSS signal is greater than the third specified threshold
  • the signal strength of the base station is greater than the fourth specified threshold.
  • the setting rule includes a second specified period set
  • the adjusting the sending cycle of the direct synchronization signal according to a set rule to obtain an adjusted second cycle includes:
  • the sending the direct synchronization signal to one or more second terminals according to the second period includes:
  • the direct synchronization signal is sent to the second terminal through a PSBCH and according to the second period.
  • the setting rule is based on a communication protocol or is stored in the first terminal in a firmware manner.
  • a vehicle networking synchronization device is provided.
  • the device is used for a first terminal, and the first terminal is used for characterizing a sending end of a directly connected synchronization signal.
  • the device includes:
  • a determining module configured to determine that a sending period of the directly connected synchronization signal is a first period under a first network signal condition
  • the adjustment module is configured to adjust a sending cycle of the direct synchronization signal according to a set rule if a second network signal condition is detected, and the second network signal condition is different from the first network signal condition, Obtaining an adjusted second period, the second period being different from the first period;
  • a sending module configured to send the direct synchronization signal to one or more second terminals that need to be synchronized according to the second period, and the second terminal is used to characterize a receiving end of the direct synchronization signal, So that the second terminal synchronizes the IoV according to the received direct synchronization signal.
  • the setting rule includes a specified correspondence between a specified network signal condition and a specified sending period;
  • the adjustment module includes:
  • a first determining submodule configured to determine the specified sending period corresponding to the second network signal condition according to the specified corresponding relationship
  • a second determining submodule is configured to determine the designated sending period corresponding to the second network signal condition as the second period.
  • the first network signal condition includes at least one of the following:
  • the signal strength of the global navigation satellite system GNSS is greater than a first specified threshold
  • the signal strength of the base station is greater than a second specified threshold.
  • the second network signal condition includes at least one of the following:
  • the signal strength of the GNSS is less than the first specified threshold
  • the signal strength of the base station is less than the second specified threshold.
  • the setting rule includes a first specified period set;
  • the adjustment module includes:
  • a third determining submodule configured to determine to shorten the first period according to the first network signal condition and the second network signal condition
  • the first selection sub-module is configured to select another specified period value smaller than the first period from the first specified period set, and determine the another specified period value as the second period.
  • the sending module includes:
  • a first processing submodule configured to, if the first terminal is in a direct-connected communication state, send the direct-connected synchronization signal to the second terminal through dedicated signaling and according to the second period;
  • a second processing submodule configured to, if the first terminal is in a non-directly connected communication state, send the directly connected synchronization signal to the second through a physical directly connected broadcast channel PSBCH according to the second period terminal.
  • the dedicated signaling includes radio resource control RRC signaling.
  • the first network signal condition includes at least one of the following:
  • the strength of the GNSS signal is less than a third specified threshold
  • the signal strength of the base station is less than a fourth specified threshold.
  • the second network signal condition includes at least one of the following:
  • the strength of the GNSS signal is greater than the third specified threshold
  • the signal strength of the base station is greater than the fourth specified threshold.
  • the setting rule includes a second specified period set;
  • the adjustment module includes:
  • a fourth determining submodule configured to determine to extend the first period according to the first network signal condition and the second network signal condition
  • the second selection sub-module is configured to select another specified period value greater than the first period from the second specified period set, and determine the further specified period value as the second period.
  • the sending module includes:
  • a third processing submodule configured to continue to send the direct synchronization signal to the second terminal according to the first period if the first terminal is in a direct connection communication state
  • a fourth processing sub-module is configured to send the directly connected synchronization signal to the second terminal through the PSBCH and according to the second period if the first terminal is in a non-directly connected communication state.
  • the setting rule is based on a communication protocol or is stored in the first terminal in a firmware manner.
  • a non-transitory computer-readable storage medium stores a computer program, and the computer program is used to execute the method for synchronizing the Internet of Vehicles provided by the first aspect.
  • a vehicle networking synchronization device is provided.
  • the device is used for a first terminal.
  • the first terminal is used to characterize a sending end of a direct-connected synchronization signal.
  • the device includes:
  • Memory for storing processor-executable instructions
  • the processor is configured to:
  • the sending period of the direct synchronization signal is adjusted according to a set rule to obtain an adjusted second network signal condition. Period, the second period is different from the first period;
  • the first terminal in the present disclosure determines that the sending period of the direct-connect synchronization signal under the first network signal condition is the first period, if a second network signal condition is detected, the second network signal condition is the same as the first network signal. If the conditions are different, the sending period of the direct synchronization signal can be adjusted according to the set rule to obtain an adjusted second period. The second period is different from the first period, and the direct synchronization signal is sent to the first period according to the second period.
  • the second terminal is used to characterize the receiving end of the direct synchronization signal, so that the second terminal can synchronize the IoV according to the received direct synchronization signal, thereby realizing the adjustment of the direct synchronization signal according to the change of the network signal
  • the sending cycle of the system not only guarantees the reasonable synchronization effect of the connected car, but also saves energy consumption.
  • Fig. 1 is a flow chart showing a method for synchronizing a car network according to an exemplary embodiment
  • Fig. 2 is an application scenario diagram of a method for synchronizing a connected vehicle network according to an exemplary embodiment
  • Fig. 3 is a flow chart showing another method for synchronizing a connected vehicle according to an exemplary embodiment
  • Fig. 4 is a flow chart showing another method for synchronizing a connected vehicle according to an exemplary embodiment
  • Fig. 5 is a flow chart showing another method for synchronizing a car network according to an exemplary embodiment
  • Fig. 6 is a flow chart showing another method for synchronizing a vehicle network according to an exemplary embodiment
  • Fig. 7 is a flow chart showing another method for synchronizing a vehicle network according to an exemplary embodiment
  • Fig. 8 is a block diagram of a transmission configuration apparatus according to an exemplary embodiment
  • Fig. 9 is a block diagram illustrating another transmission configuration apparatus according to an exemplary embodiment.
  • Fig. 10 is a block diagram showing another transmission configuration apparatus according to an exemplary embodiment
  • Fig. 11 is a block diagram showing another transmission configuration apparatus according to an exemplary embodiment
  • Fig. 12 is a block diagram showing another transmission configuration apparatus according to an exemplary embodiment
  • Fig. 13 is a block diagram showing another transmission configuration apparatus according to an exemplary embodiment
  • Fig. 14 is a schematic structural diagram of a transmission configuration apparatus according to an exemplary embodiment.
  • first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information.
  • word “if” as used herein can be interpreted as “at” or "when” or "in response to determination”.
  • FIG. 1 is a flowchart illustrating a method for synchronizing a vehicle network according to an exemplary embodiment
  • FIG. 2 is a diagram of an application scenario of a method for synchronizing a vehicle network according to an exemplary embodiment
  • FIG. At the first terminal the first terminal is used to characterize the sending end of the direct-connected synchronization signal.
  • the method for synchronizing the Internet of Vehicles may include the following steps 110-130:
  • step 110 it is determined that the sending period of the direct-connect synchronization signal under the first network signal condition is the first period.
  • the network signal may refer to a GNSS (Global Navigation Satellite System) signal, such as a GPS (Global Positioning System) signal or a Beidou signal; or a base station signal.
  • the first network signal condition may refer to a situation where the network signal is strong or a situation where the network signal is weak.
  • the first period may be a longer semi-static period configured by the first terminal when the network signal is strong.
  • the semi-static period may be a sending period of the direct connection synchronization signal that is defaulted by both the first terminal and the second terminal (that is, the receiving end of the direct connection synchronization signal), and has a long time length, which is a fixed time length value.
  • the first cycle is 320 milliseconds.
  • step 120 if a second network signal condition is detected, and the second network signal condition is different from the first network signal condition, the sending period of the direct synchronization signal is adjusted according to a set rule to obtain an adjusted second network signal condition. Cycle, the second cycle is different from the first cycle.
  • the network signal changes, and the sending period of the direct synchronization signal also changes accordingly.
  • the first network signal condition refers to a situation where the network signal is strong
  • the second network signal condition refers to a situation where the network signal is weak.
  • the sending period of the direct synchronization signal can be reduced.
  • the first network signal condition refers to a situation where the network signal is weak
  • the second network signal condition refers to a situation where the network signal is strong.
  • the sending period of the direct synchronization signal can be increased.
  • step 130 the direct synchronization signal is sent to one or more second terminals that need to be synchronized according to a second period.
  • the second terminal is used to characterize the receiving end of the direct synchronization signal, so that the second terminal may
  • the direct-connect synchronization signal synchronizes the connected vehicle.
  • a first terminal and a second terminal are included.
  • the first terminal is a sending end of a direct synchronization signal
  • the second terminal is a receiving end of the direct synchronization signal.
  • the sending period of the direct synchronization signal when the sending period of the direct synchronization signal is determined to be the first period under the first network signal condition, if a second network signal condition is detected, the second network signal condition is different from the first network signal condition.
  • the sending period of the direct connection synchronization signal may be adjusted according to a set rule to obtain an adjusted second period, the second period is different from the first period, and the direct connection synchronization signal is sent to the second terminal according to the second period.
  • the second terminal is used to characterize the receiving end of the direct synchronization signal, so that the second terminal can synchronize the Internet of Vehicles according to the received direct synchronization signal, thereby implementing the adjustment of the transmission of the direct synchronization signal according to the change of the network signal.
  • the cycle while ensuring a reasonable synchronization effect of the connected car, also saves energy consumption.
  • Fig. 3 is a flow chart showing another method for synchronizing the Internet of Vehicles according to an exemplary embodiment.
  • the method for synchronizing the Internet of Vehicles can be used for a first terminal and is based on the method shown in Fig. 1.
  • the rule includes a specified correspondence between a specified network signal condition and a specified sending period.
  • step 310 a specified sending period corresponding to the second network signal condition is determined according to the specified correspondence in the setting rule.
  • the designated correspondence relationship may refer to a correspondence relationship between different designated network signal conditions and different designated sending periods.
  • the specified network signal condition 1 corresponds to the specified transmission period 1; the specified network signal condition 2 corresponds to the specified transmission period 2; ...; the specified network signal condition n corresponds to the specified transmission period n.
  • the setting rule may be specified based on a communication protocol or stored in the first terminal in a firmware manner.
  • step 320 the designated sending period corresponding to the second network signal condition is determined as the second period.
  • the specified sending period corresponding to the second network signal condition can be determined according to the specified correspondence in the setting rule, and the specified sending period corresponding to the second network signal condition is determined as the second period, thereby improving the determination. Efficiency of the second cycle.
  • Fig. 4 is a flow chart showing another method for synchronizing the Internet of Vehicles according to an exemplary embodiment.
  • the method for synchronizing the Internet of Vehicles can be applied to a first terminal and is based on the method shown in Fig. 1.
  • the network signal conditions include at least one of the following: the signal strength of the GNSS is greater than a first specified threshold; the signal strength of the base station is greater than a second specified threshold.
  • the second network signal condition includes at least one of the following: the signal strength of the GNSS is less than the first specified threshold; and the signal strength of the base station is less than the second specified threshold.
  • the setting rule includes a first specified period set. In an embodiment, the setting rule may be specified based on a communication protocol or stored in the first terminal in a firmware manner. When performing step 120, as shown in FIG. 4, the following steps 410-420 may be included:
  • step 410 it is determined that the first period is shortened according to the first network signal condition and the second network signal condition.
  • the first network signal condition includes that the signal strength of the GNSS is greater than the first specified threshold, and / or the signal strength of the base station is greater than the second specified threshold; and the second network signal condition includes that the GNSS signal strength is less than The first specified threshold and / or the signal strength of the base station is less than the second specified threshold, which indicates that the second network signal condition is worse than the first network signal condition, in order to ensure a higher synchronization effect at this time.
  • step 420 another specified period value smaller than the first period is selected from the first specified period set, and the other specified period value is determined as the second period.
  • the number of designated period values included in the first designated period set is generally greater than 1, and less than or equal to 4.
  • the specified period values included in the first specified period set are 40 ms, 80 ms, 160 ms, and 320 ms. If the first period is 320 ms, you can select 40 from 40 ms, 80 ms, and 160 ms. Milliseconds are used as the second period. Similarly, 80 milliseconds or 160 milliseconds can be selected as the second period according to the actual situation.
  • another specified period value smaller than the first period may be selected from the first specified period set, and The another specified period value is determined as the second period, thereby improving the reliability of determining the second period.
  • Fig. 5 is a flow chart showing another method for synchronizing the Internet of Vehicles according to an exemplary embodiment.
  • the method for synchronizing the Internet of Vehicles can be used for a first terminal, and is based on the method shown in Fig. 4, and executes step 130. At this time, as shown in FIG. 5, the following steps 510-520 may be included:
  • step 510 if the first terminal is in a direct connection communication state, the direct connection synchronization signal is sent to the second terminal through dedicated signaling and according to a second cycle.
  • the directly connected communication state may refer to that the first terminal is communicating with other directly connected terminals.
  • the dedicated signaling in the above step 510 may include RRC (Radio Resource Control) signaling. That is, if the first terminal is in a direct communication state, the direct synchronization signal sent according to the second cycle can be added to the RRC signaling, and then the RRC signaling is sent to the second terminal, so that the second terminal can The RRC signaling is used to obtain the direct-connected synchronization signal sent according to the second cycle, and to synchronize the IoV according to the direct-connected synchronization signal.
  • RRC Radio Resource Control
  • step 520 if the first terminal is in a non-directly connected communication state, the direct connection synchronization signal is sent to the second terminal through a PSBCH (Physical Sidelink Broadcast Channel) and according to a second cycle.
  • PSBCH Physical Sidelink Broadcast Channel
  • the non-directly connected communication state may mean that the first terminal is not communicating with other directly connected terminals. That is, if the first terminal is in a non-directly connected communication state, it can broadcast a directly connected synchronization signal sent according to the second cycle through the PSBCH.
  • the direct synchronization signal can be sent to the second terminal through dedicated signaling and according to the second cycle; if the first terminal is in the non-direct communication state, it can be transmitted through The PSBCH sends the direct synchronization signal to the second terminal according to the second cycle, thereby ensuring the reliability of the transmission of the direct synchronization signal and improving the efficiency of the IoV synchronization.
  • Fig. 6 is a flow chart showing another method for synchronizing a car network according to an exemplary embodiment.
  • the method for synchronizing a car network can be used for a first terminal and is based on the method shown in Fig. 1.
  • the network signal conditions include at least one of the following: the strength of the GNSS signal is less than the third specified threshold; the signal strength of the base station is less than the fourth specified threshold.
  • the second network signal condition includes at least one of the following: the strength of the GNSS signal is greater than the third specified threshold; and the signal strength of the base station is greater than the fourth specified threshold.
  • the setting rule includes a second specified period set. In an embodiment, the setting rule may be specified based on a communication protocol or stored in the first terminal in a firmware manner. When step 120 is performed, as shown in FIG. 6, the following steps 610-620 may be included:
  • step 610 it is determined that the first period is extended according to the first network signal condition and the second network signal condition.
  • the first network signal condition includes that the strength of the GNSS signal is less than the third specified threshold, and / or that the signal strength of the base station is less than the fourth specified threshold
  • the second network signal condition includes that the GNSS signal has an The third specified threshold and / or the signal strength of the base station is greater than the fourth specified threshold, which indicates that the second network signal condition is better than the first network signal condition. Even the sending period of the synchronization signal, that is, extending the sending period of the synchronization signal.
  • step 620 another specified period value greater than the first period is selected from the second specified period set, and the further specified period value is determined as the second period.
  • the number of designated period values included in the second designated period set is generally greater than 1, and less than or equal to 4.
  • the specified period values included in the second specified period set are 40 ms, 80 ms, 160 ms, and 320 ms. If the first period is 40 ms, 320 ms can be selected from 80 ms, 160 ms, and 320 ms. As the second cycle. Similarly, 80 milliseconds or 160 milliseconds can be selected as the second period according to the actual situation.
  • a second specified period value greater than the first period may be selected from the second number of specified period values.
  • a second specified period value is determined as the second period, thereby improving the accuracy of determining the second period.
  • Fig. 7 is a flow chart showing another method for synchronizing the Internet of Vehicles according to an exemplary embodiment.
  • the method for synchronizing the Internet of Vehicles can be used for a first terminal, and is based on the method shown in Fig. 6, and executes step 130. As shown in FIG. 7, the following steps 710-720 may be included:
  • step 710 if the first terminal is in a direct connection communication state, the direct connection synchronization signal is continuously sent to the second terminal according to the first cycle.
  • the directly connected communication state may refer to that the first terminal is communicating with other directly connected terminals. If the first terminal is in a direct connection communication state, in order to ensure the communication quality, the direct connection synchronization signal may continue to be sent to the second terminal according to the first cycle. In other words, because the second period is greater than the first period, the purpose of sending the direct synchronization signal to the second terminal according to the second period is to save the link overhead.
  • the link overhead is saved and the communication quality is compared, the communication quality is more Important, so you can continue to send the direct synchronization signal to the second terminal according to the first cycle until the first terminal is in a non-direct communication state, and if the second network signal conditions remain unchanged, you can continue at this time
  • the direct synchronization signal is sent to the second terminal according to the second cycle.
  • the dedicated signaling in step 710 may include RRC signaling. That is, if the first terminal is in a direct communication state, the direct synchronization signal sent according to the first cycle can be added to the RRC signaling, and then the RRC signaling is sent to the second terminal, so that the second terminal can The RRC signaling is used to obtain the direct synchronization signal sent according to the first cycle, and to synchronize the IoV according to the direct synchronization signal.
  • step 720 if the first terminal is in a non-directly connected communication state, a direct connection synchronization signal is sent to the second terminal through a PSBCH (Physical Sidelink Broadcast Channel) and according to a second period.
  • PSBCH Physical Sidelink Broadcast Channel
  • the non-directly connected communication state may mean that the first terminal is not communicating with other directly connected terminals. That is, if the first terminal is in a non-directly connected communication state, it can broadcast a directly connected synchronization signal sent according to the second cycle through the PSBCH.
  • the first terminal if the first terminal is in the direct communication state, it can continue to send the direct synchronization signal to the second terminal according to the first cycle; if the first terminal is in the non-direct communication state, it can pass the PSBCH and follow the first The direct connection synchronization signal is sent to the second terminal in two cycles, thereby improving the practicability of IoV synchronization.
  • the present disclosure also provides an embodiment of the IoV synchronization device.
  • Fig. 8 is a block diagram of a vehicle-to-vehicle synchronization device according to an exemplary embodiment.
  • the device may be applied to a first terminal, where the first terminal is used to characterize a sending end of a direct synchronization signal, and is used to execute Fig.
  • the vehicle-to-vehicle synchronization method shown in FIG. 8 may include:
  • the determining module 81 is configured to determine that a sending period of the directly connected synchronization signal is a first period under a first network signal condition
  • the adjusting module 82 is configured to adjust a sending period of the direct synchronization signal according to a set rule if a second network signal condition is detected, and the second network signal condition is different from the first network signal condition. To obtain an adjusted second period, which is different from the first period;
  • the sending module 83 is configured to send the direct synchronization signal to one or more second terminals that need to be synchronized according to the second period, and the second terminal is used to characterize a receiving end of the direct synchronization signal. To enable the second terminal to synchronize the IoV according to the received direct synchronization signal.
  • the sending period of the direct synchronization signal when the sending period of the direct synchronization signal is determined to be the first period under the first network signal condition, if a second network signal condition is detected, the second network signal condition is different from the first network signal condition.
  • the sending period of the direct connection synchronization signal may be adjusted according to a set rule to obtain an adjusted second period, the second period is different from the first period, and the direct connection synchronization signal is sent to the second terminal according to the second period.
  • the second terminal is used to characterize the receiving end of the direct synchronization signal, so that the second terminal can synchronize the Internet of Vehicles according to the received direct synchronization signal, thereby realizing the adjustment of the transmission of the direct synchronization signal according to the change of the network signal.
  • the cycle while ensuring a reasonable synchronization effect of the connected car, also saves energy consumption.
  • the setting rule may include a specified correspondence between a specified network signal condition and a specified sending period; the adjustment module 82 may include:
  • a first determining sub-module 91 configured to determine the specified sending period corresponding to the second network signal condition according to the specified corresponding relationship
  • the second determining sub-module 92 is configured to determine the designated sending period corresponding to the second network signal condition as the second period.
  • the specified sending period corresponding to the second network signal condition can be determined according to the specified correspondence in the setting rule, and the specified sending period corresponding to the second network signal condition is determined as the second period, thereby improving the determination. Efficiency of the second cycle.
  • the first network signal condition may include at least one of the following:
  • the signal strength of the GNSS is greater than a first specified threshold
  • the signal strength of the base station is greater than a second specified threshold.
  • the second network signal condition may include at least one of the following:
  • the signal strength of the GNSS is less than the first specified threshold
  • the signal strength of the base station is less than the second specified threshold.
  • the setting rule may include a first specified period set; the adjustment module 82 may include:
  • a third determining sub-module 101 configured to determine to shorten the first period according to the first network signal condition and the second network signal condition;
  • the first selection sub-module 102 is configured to select another specified period value smaller than the first period from the first specified period set, and determine the another specified period value as the second period.
  • another specified period value smaller than the first period may be selected from the first specified period set, and The another specified period value is determined as the second period, thereby improving the reliability of determining the second period.
  • the sending module 83 may include:
  • a first processing sub-module 111 configured to, if the first terminal is in a direct-connected communication state, send the direct-connected synchronization signal to the second terminal through dedicated signaling and according to the second period;
  • the second processing sub-module 112 is configured to: if the first terminal is in a non-directly connected communication state, send the directly connected synchronization signal to the first through a physical direct connection broadcast channel PSBCH according to the second period. Two terminals.
  • the direct synchronization signal can be sent to the second terminal through dedicated signaling and according to the second cycle; if the first terminal is in the non-direct communication state, the The PSBCH sends the direct synchronization signal to the second terminal according to the second cycle, thereby ensuring the reliability of the transmission of the direct synchronization signal and improving the efficiency of the IoV synchronization.
  • the dedicated signaling may include RRC signaling.
  • the first network signal condition may include at least one of the following:
  • the strength of the GNSS signal is less than a third specified threshold
  • the signal strength of the base station is less than a fourth specified threshold.
  • the second network signal condition may include at least one of the following:
  • the strength of the GNSS signal is greater than the third specified threshold
  • the signal strength of the base station is greater than the fourth specified threshold.
  • the setting rule may include a second specified period set; the adjustment module 82 may include:
  • a fourth determining sub-module 121 configured to determine to extend the first period according to the first network signal condition and the second network signal condition
  • the second selection sub-module 122 is configured to select another specified period value greater than the first period from the second specified period set, and determine the further specified period value as the second period.
  • a second specified period value greater than the first period may be selected from the second number of specified period values.
  • a second specified period value is determined as the second period, thereby improving the accuracy of determining the second period.
  • the sending module 83 may include:
  • the third processing submodule 131 is configured to continue to send the direct synchronization signal to the second terminal according to the first period if the first terminal is in a direct connection communication state;
  • the fourth processing sub-module 132 is configured to send the directly connected synchronization signal to the second terminal through the PSBCH and according to the second period if the first terminal is in a non-directly connected communication state.
  • the first terminal if the first terminal is in the direct communication state, it can continue to send the direct synchronization signal to the second terminal according to the first cycle; if the first terminal is in the non-direct communication state, it can pass the PSBCH and follow the first The direct connection synchronization signal is sent to the second terminal in two cycles, thereby improving the practicability of IoV synchronization.
  • the setting rule may be specified based on a communication protocol or stored in the first terminal in a firmware manner.
  • the relevant part may refer to the description of the method embodiment.
  • the device embodiments described above are only schematic, in which the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, may be located in one Place, or can be distributed across multiple network elements. Some or all of the modules can be selected according to actual needs to achieve the objectives of the solution of the present disclosure. Those of ordinary skill in the art can understand and implement without creative efforts.
  • the present disclosure also provides a non-transitory computer-readable storage medium on which a computer program is stored, and the computer program is configured to execute the method for synchronizing the Internet of Vehicles described in any one of FIG. 1 to FIG. 7 described above. .
  • the present disclosure also provides a vehicle networking synchronization device, characterized in that the device is used for a first terminal, the first terminal is used to characterize a sending end of a direct synchronization signal, and the device includes:
  • Memory for storing processor-executable instructions
  • the processor is configured to:
  • the sending period of the direct synchronization signal is adjusted according to a set rule to obtain an adjusted second network signal condition. Period, the second period is different from the first period;
  • Fig. 14 is a schematic structural diagram of a vehicle networking synchronization device according to an exemplary embodiment.
  • a vehicle networking synchronization device 1400 is shown.
  • the device 1400 may be a computer, a mobile phone, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, Fitness equipment, personal digital assistants and other terminals.
  • the device 1400 may include one or more of the following components: a processing component 1401, a memory 1402, a power component 1403, a multimedia component 1404, an audio component 1405, an input / output (I / O) interface 1406, a sensor component 1407, And communication component 1408.
  • a processing component 1401 a memory 1402, a power component 1403, a multimedia component 1404, an audio component 1405, an input / output (I / O) interface 1406, a sensor component 1407, And communication component 1408.
  • the processing component 1401 generally controls the overall operations of the device 1400, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 1401 may include one or more processors 1409 to execute instructions to complete all or part of the steps of the method described above.
  • the processing component 1401 may include one or more modules to facilitate interaction between the processing component 1401 and other components.
  • the processing component 1401 may include a multimedia module to facilitate the interaction between the multimedia component 1404 and the processing component 1401.
  • the memory 1402 is configured to store various types of data to support operation at the device 1400. Examples of such data include instructions for any application or method for operating on the device 1400, contact data, phonebook data, messages, pictures, videos, and the like.
  • the memory 1402 may be implemented by any type of volatile or non-volatile storage devices, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), Programming read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM Programming read-only memory
  • PROM programmable read-only memory
  • ROM read-only memory
  • magnetic memory flash memory
  • flash memory magnetic disk or optical disk.
  • the power supply component 1403 provides power to various components of the device 1400.
  • the power component 1403 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 1400.
  • the multimedia component 1404 includes a screen that provides an output interface between the device 1400 and a user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user.
  • the touch panel includes one or more touch sensors to sense touch, swipe, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or slide action, but also detect duration and pressure related to the touch or slide operation.
  • the multimedia component 1404 includes a front camera and / or a rear camera. When the device 1400 is in an operation mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 1405 is configured to output and / or input audio signals.
  • the audio component 1405 includes a microphone (MIC) that is configured to receive an external audio signal when the device 1400 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode.
  • the received audio signal may be further stored in the memory 1402 or transmitted via the communication component 1408.
  • the audio component 1405 further includes a speaker for outputting audio signals.
  • the I / O interface 1406 provides an interface between the processing component 1401 and a peripheral interface module.
  • the peripheral interface module may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
  • the sensor component 1407 includes one or more sensors for providing status assessment of various aspects to the device 1400.
  • the sensor component 1407 can detect the on / off state of the device 1400, and the relative positioning of the components, such as the display and keypad of the device 1400.
  • the sensor component 1407 can also detect the change in the position of the device 1400 or a component of the device 1400 , The presence or absence of the user's contact with the device 1400, the orientation or acceleration / deceleration of the device 1400, and the temperature change of the device 1400.
  • the sensor assembly 1407 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact.
  • the sensor component 1407 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 1407 may further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • the communication component 1408 is configured to facilitate wired or wireless communication between the device 1400 and other devices.
  • the device 1400 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof.
  • the communication component 1408 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel.
  • the communication component 1408 further includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra wideband
  • Bluetooth Bluetooth
  • the apparatus 1400 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic component is implemented to perform the above method.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor, or other electronic component is implemented to perform the above method.
  • a non-transitory computer-readable storage medium including instructions may be executed by the processor 1409 of the device 1400 to complete the foregoing method.
  • the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
  • the device 1400 when the instructions in the storage medium are executed by the processor, the device 1400 is enabled to execute any one of the IoV synchronization methods described above.

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  • Telephonic Communication Services (AREA)

Abstract

本公开提供一种车联网同步方法及装置，该方法用于第一终端，第一终端用于表征直连同步信号的发送端，该方法包括：确定在第一网络信号条件下直连同步信号的发送周期为第一周期；若检测到第二网络信号条件，第二网络信号条件与第一网络信号条件不同，则按照设定规则对直连同步信号的发送周期进行调整，得到调整后的第二周期，第二周期与第一周期不同；按照第二周期将直连同步信号发送至一个或多个第二终端，第二终端用于表征直连同步信号的接收端，以使第二终端根据接收到的直连同步信号进行车联网同步。因此，本公开可以实现根据网络信号的变化来调整直连同步信号的发送周期，在保证了获得合理化的车联网同步效果的同时，还节省了能耗。

Description

车联网同步方法及装置 技术领域
本公开涉及通信技术领域，尤其涉及一种车联网同步方法及装置。
背景技术
在V2X(Vehicle to Everything，车联网)通信中，可以包括V2V(Vehicle to Vehicle，车车互联)通信、V2I(Vehicle to Infrastructure，车和路互联)通信和V2P(Vehicle to Pedestrian，车人互联)通信等。现有技术中，可以利用现有的蜂窝通信技术支持V2X通信，即利用原有蜂窝网络中终端设备和基站之间的通信链路进行通信；也可以直接通过设备之间的直连链路进行通信。但是，LTE(Long Term Evolution，长期演进)V2X通信中只能支持一些基础的安全方面的V2X应用。因此，为了支持新的V2X业务和满足新的V2X技术要求，NR(New Radio，新空口)V2X通信需要提供更高的通信速率，更短的通信延时，更可靠的通信质量。
发明内容
为克服相关技术中存在的问题，本公开实施例提供一种车联网同步方法及装置。
根据本公开实施例的第一方面，提供一种车联网同步方法，所述方法用于第一终端，所述第一终端用于表征直连同步信号的发送端，所述方法包括：
确定在第一网络信号条件下所述直连同步信号的发送周期为第一周期；
若检测到第二网络信号条件，所述第二网络信号条件与所述第一网络信号条件不同，则按照设定规则对所述直连同步信号的发送周期进行调整，得到调整后的第二周期，所述第二周期与所述第一周期不同；
按照所述第二周期将所述直连同步信号发送至需要同步的一个或多个第二终端，所述第二终端用于表征所述直连同步信号的接收端，以使所述第二终端根据接收到的所述直连同步信号进行车联网同步。
可选地，所述设定规则中包括指定网络信号条件与指定发送周期之间的指定对应关系；
所述按照设定规则对所述直连同步信号的发送周期进行调整，得到调整后的第二周期，包括：
根据所述指定对应关系确定所述第二网络信号条件对应的所述指定发送周期；
将所述第二网络信号条件对应的所述指定发送周期确定为所述第二周期。
可选地，所述第一网络信号条件包括以下至少一项：
全球导航卫星系统GNSS的信号强度大于第一指定阈值；
基站的信号强度大于第二指定阈值。
可选地，所述第二网络信号条件包括以下至少一项：
所述GNSS的信号强度小于所述第一指定阈值；
所述基站的信号强度小于所述第二指定阈值。
可选地，所述设定规则中包括第一指定周期集合；
所述按照设定规则对所述直连同步信号的发送周期进行调整，得到调整后的第二周期，包括：
根据所述第一网络信号条件和所述第二网络信号条件，确定对所述第一周期进行缩短；
从所述第一指定周期集合中选取小于所述第一周期的另一指定周期值，并将所述另一指定周期值确定为所述第二周期。
可选地，所述按照所述第二周期将所述直连同步信号发送至一个或多个第二终端，包括：
若所述第一终端处于直连通信状态，则通过专用信令且按照所述第二周期将所述直连同步信号发送至所述第二终端；
若所述第一终端处于非直连通信状态，则通过物理直连广播信道PSBCH且按照所述第二周期将所述直连同步信号发送至所述第二终端。
可选地，所述专用信令包括无线资源控制RRC信令。
可选地，所述第一网络信号条件包括以下至少一项：
GNSS信号的强度小于第三指定阈值；
基站的信号强度小于第四指定阈值。
可选地，所述第二网络信号条件包括以下至少一项：
所述GNSS信号的强度大于所述第三指定阈值；
所述基站的信号强度大于所述第四指定阈值。
可选地，所述设定规则中包括第二指定周期集合；
所述按照设定规则对所述直连同步信号的发送周期进行调整，得到调整后的第二周期，包括：
根据所述第一网络信号条件和所述第二网络信号条件，确定对所述第一周期进行延长；
从所述第二指定周期集合中选取大于所述第一周期的再一指定周期值，并将所述再一指定周期值确定为所述第二周期。
可选地，所述按照所述第二周期将所述直连同步信号发送至一个或多个第二终端，包括：
若所述第一终端处于直连通信状态，则继续按照所述第一周期将所述直连同步信号发送至所述第二终端；
若所述第一终端处于非直连通信状态，则通过PSBCH且按照所述第二周期将所述直连同步信号发送至所述第二终端。
可选地，所述设定规则是基于通信协议规定的、或以固件方式存储在所述第一终端中的。
根据本公开实施例的第二方面，提供一种车联网同步装置，所述装置用于第一终端，所述第一终端用于表征直连同步信号的发送端，所述装置包括：
确定模块，被配置为确定在第一网络信号条件下所述直连同步信号的发送周期为第一周期；
调整模块，被配置为若检测到第二网络信号条件，所述第二网络信号条件与所述第一网络信号条件不同，则按照设定规则对所述直连同步信号的发送周期进行调整， 得到调整后的第二周期，所述第二周期与所述第一周期不同；
发送模块，被配置为按照所述第二周期将所述直连同步信号发送至需要同步的一个或多个第二终端，所述第二终端用于表征所述直连同步信号的接收端，以使所述第二终端根据接收到的所述直连同步信号进行车联网同步。
可选地，所述设定规则中包括指定网络信号条件与指定发送周期之间的指定对应关系；所述调整模块包括：
第一确定子模块，被配置为根据所述指定对应关系确定所述第二网络信号条件对应的所述指定发送周期；
第二确定子模块，被配置为将所述第二网络信号条件对应的所述指定发送周期确定为所述第二周期。
可选地，所述第一网络信号条件包括以下至少一项：
全球导航卫星系统GNSS的信号强度大于第一指定阈值；
基站的信号强度大于第二指定阈值。
可选地，所述第二网络信号条件包括以下至少一项：
所述GNSS的信号强度小于所述第一指定阈值；
所述基站的信号强度小于所述第二指定阈值。
可选地，所述设定规则中包括第一指定周期集合；所述调整模块包括：
第三确定子模块，被配置为根据所述第一网络信号条件和所述第二网络信号条件，确定对所述第一周期进行缩短；
第一选取子模块，被配置为从所述第一指定周期集合中选取小于所述第一周期的另一指定周期值，并将所述另一指定周期值确定为所述第二周期。
可选地，所述发送模块包括：
第一处理子模块，被配置为若所述第一终端处于直连通信状态，则通过专用信令且按照所述第二周期将所述直连同步信号发送至所述第二终端；
第二处理子模块，被配置为若所述第一终端处于非直连通信状态，则通过物理直连广播信道PSBCH且按照所述第二周期将所述直连同步信号发送至所述第二终端。
可选地，所述专用信令包括无线资源控制RRC信令。
可选地，所述第一网络信号条件包括以下至少一项：
GNSS信号的强度小于第三指定阈值；
基站的信号强度小于第四指定阈值。
可选地，所述第二网络信号条件包括以下至少一项：
所述GNSS信号的强度大于所述第三指定阈值；
所述基站的信号强度大于所述第四指定阈值。
可选地，所述设定规则中包括第二指定周期集合；所述调整模块包括：
第四确定子模块，被配置为根据所述第一网络信号条件和所述第二网络信号条件，确定对所述第一周期进行延长；
第二选取子模块，被配置为从所述第二指定周期集合中选取大于所述第一周期的再一指定周期值，并将所述再一指定周期值确定为所述第二周期。
可选地，所述发送模块包括：
第三处理子模块，被配置为若所述第一终端处于直连通信状态，则继续按照所述第一周期将所述直连同步信号发送至所述第二终端；
第四处理子模块，被配置为若所述第一终端处于非直连通信状态，则通过PSBCH且按照所述第二周期将所述直连同步信号发送至所述第二终端。
可选地，所述设定规则是基于通信协议规定的、或以固件方式存储在所述第一终端中的。
根据本公开实施例的第三方面，提供一种非临时计算机可读存储介质，所述存储介质上存储有计算机程序，所述计算机程序用于执行上述第一方面提供的车联网同步方法。
根据本公开实施例的第四方面，提供一种车联网同步装置，所述装置用于第一终端，所述第一终端用于表征直连同步信号的发送端，所述装置包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
确定在第一网络信号条件下所述直连同步信号的发送周期为第一周期；
若检测到第二网络信号条件，所述第二网络信号条件与所述第一网络信号条件不同，则按照设定规则对所述直连同步信号的发送周期进行调整，得到调整后的第二周期，所述第二周期与所述第一周期不同；
按照所述第二周期将所述直连同步信号发送至需要同步的一个或多个第二终端，所述第二终端用于表征所述直连同步信号的接收端，以使所述第二终端根据接收到的所述直连同步信号进行车联网同步。
本公开的实施例提供的技术方案可以包括以下有益效果：
本公开中的第一终端可以在确定在第一网络信号条件下直连同步信号的发送周期为第一周期时，若检测到第二网络信号条件，该第二网络信号条件与第一网络信号条件不同，则可以按照设定规则对直连同步信号的发送周期进行调整，得到调整后的第二周期，第二周期与第一周期不同，以及按照第二周期将直连同步信号发送至第二终端，第二终端用于表征直连同步信号的接收端，这样第二终端就可以根据接收到的直连同步信号进行车联网同步，从而实现了根据网络信号的变化来调整直连同步信号的发送周期，在保证了获得合理化的车联网同步效果的同时，还节省了能耗。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。
图1是根据一示例性实施例示出的一种车联网同步方法的流程图；
图2是根据一示例性实施例示出的一种车联网同步方法的应用场景图；
图3是根据一示例性实施例示出的另一种车联网同步方法的流程图；
图4是根据一示例性实施例示出的另一种车联网同步方法的流程图；
图5是根据一示例性实施例示出的另一种车联网同步方法的流程图；
图6是根据一示例性实施例示出的另一种车联网同步方法的流程图；
图7是根据一示例性实施例示出的另一种车联网同步方法的流程图；
图8是根据一示例性实施例示出的一种传输配置装置的框图；
图9是根据一示例性实施例示出的另一种传输配置装置的框图；
图10是根据一示例性实施例示出的另一种传输配置装置的框图；
图11是根据一示例性实施例示出的另一种传输配置装置的框图；
图12是根据一示例性实施例示出的另一种传输配置装置的框图；
图13是根据一示例性实施例示出的另一种传输配置装置的框图；
图14是根据一示例性实施例示出的一种传输配置装置的结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。
在本公开使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开。在本公开和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
图1是根据一示例性实施例示出的一种车联网同步方法的流程图，图2是根据一示例性实施例示出的一种车联网同步方法的应用场景图；该车联网同步方法可以应用于第一终端，所述第一终端用于表征直连同步信号的发送端，如图1所示，该车联 网同步方法可以包括以下步骤110-130：
在步骤110中，确定在第一网络信号条件下直连同步信号的发送周期为第一周期。
本公开实施例中，网络信号可以指的是GNSS(Global Navigation Satellite System，全球导航卫星系统)信号，比如：GPS(Global Positioning System，全球定位系统)信号或北斗信号；或基站信号等。其中，第一网络信号条件可以指的是网络信号较强的情形，也可以指的是网络信号较弱的情形。
在一实施例中，第一周期可以是第一终端在网络信号较强的情形下配置的一个较长的半静态周期。并且，该半静态周期可以为第一终端和第二终端(即直连同步信号的接收端)均默认的直连同步信号的发送周期，其时间长度较长，是一个固定的时间长度值。比如：第一周期为320毫秒。
在步骤120中，若检测到第二网络信号条件，该第二网络信号条件与第一网络信号条件不同，则按照设定规则对直连同步信号的发送周期进行调整，得到调整后的第二周期，第二周期与第一周期不同。
本公开实施例中，网络信号发生变化，直连同步信号的发送周期也随之发生变化。
比如：第一网络信号条件指的是网络信号较强的情形，第二网络信号条件指的是网络信号较弱的情形，此时可以调小直连同步信号的发送周期。
又比如：第一网络信号条件指的是网络信号较弱的情形，第二网络信号条件指的是网络信号较强的情形，此时可以调大直连同步信号的发送周期。
在步骤130中，按照第二周期将直连同步信号发送至需要同步的一个或多个第二终端，第二终端用于表征直连同步信号的接收端，以使该第二终端根据接收到的直连同步信号进行车联网同步。
在一实例性场景中，如图2所示，包括第一终端和第二终端，第一终端为直连同步信号的发送端，第二终端为直连同步信号的接收端。第一终端在确定在第一网络信号条件下(例如，第一网络信号条件时，GNSS的信号强度为R1、和/或基站的信号强度为R2)直连同步信号的发送周期为第一周期；若检测到第二网络信号条件(例如，第二网络信号条件时，GNSS的信号强度为R3、和/或基站的信号强度为R4)，第二网 络信号条件与第一网络信号条件不同，此时可以按照设定规则对直连同步信号的发送周期进行调整(例如，缩短发送周期或延长发送周期)，得到调整后的第二周期，第二周期与第一周期不同；以及按照第二周期将直连同步信号发送至第二终端；第二终端接收到直连同步信号，可以根据该直连同步信号进行车联网同步。
由上述实施例可见，在确定在第一网络信号条件下直连同步信号的发送周期为第一周期时，若检测到第二网络信号条件，该第二网络信号条件与第一网络信号条件不同，则可以按照设定规则对直连同步信号的发送周期进行调整，得到调整后的第二周期，第二周期与第一周期不同，以及按照第二周期将直连同步信号发送至第二终端，第二终端用于表征直连同步信号的接收端，这样第二终端就可以根据接收到的直连同步信号进行车联网同步，从而实现了根据网络信号的变化来调整直连同步信号的发送周期，在保证了获得合理化的车联网同步效果的同时，还节省了能耗。
图3是根据一示例性实施例示出的另一种车联网同步方法的流程图，该车联网同步方法可以用于第一终端，并建立在图1所示方法的基础上，所述设定规则中包括指定网络信号条件与指定发送周期之间的指定对应关系；在执行步骤120时，如图3所示，可以包括以下步骤310-320：
在步骤310中，根据设定规则中的指定对应关系确定第二网络信号条件对应的指定发送周期。
本公开实施例中，指定对应关系可以指的是不同的指定网络信号条件和不同的指定发送周期之间的对应关系。
比如：指定网络信号条件1对应指定发送周期1；指定网络信号条件2对应指定发送周期2；…；指定网络信号条件n对应指定发送周期n。
在一实施例中，所述设定规则可以是基于通信协议规定的、或以固件方式存储在所述第一终端中的。
在步骤320中，将第二网络信号条件对应的指定发送周期确定为第二周期。
由上述实施例可见，可以根据设定规则中的指定对应关系确定第二网络信号条件对应的指定发送周期，并将第二网络信号条件对应的指定发送周期确定为第二周期，从而提高了确定第二周期的效率。
图4是根据一示例性实施例示出的另一种车联网同步方法的流程图，该车联网 同步方法可以用于第一终端，并建立在图1所示方法的基础上，所述第一网络信号条件包括以下至少一项：GNSS的信号强度大于第一指定阈值；基站的信号强度大于第二指定阈值。所述第二网络信号条件包括以下至少一项：所述GNSS的信号强度小于所述第一指定阈值；所述基站的信号强度小于所述第二指定阈值。所述设定规则中包括第一指定周期集合；在一实施例中，所述设定规则可以是基于通信协议规定的、或以固件方式存储在所述第一终端中的。在执行步骤120时，如图4所示，可以包括以下步骤410-420：
在步骤410中，根据第一网络信号条件和第二网络信号条件，确定对第一周期进行缩短。
本公开实施例中，若第一网络信号条件包括GNSS的信号强度大于第一指定阈值、和/或基站的信号强度大于第二指定阈值；而第二网络信号条件包括所述GNSS的信号强度小于所述第一指定阈值、和/或所述基站的信号强度小于所述第二指定阈值，均表明该第二网络信号条件差于第一网络信号条件，此时为了保证得到较高的同步效果，可以调小直连同步信号的发送周期，即缩短同步信号的发送周期。
在步骤420中，从第一指定周期集合中选取小于第一周期的另一指定周期值，并将该另一指定周期值确定为第二周期。
本公开实施例中，第一指定周期集合中包括的指定周期值的数量一般大于1、且小于等于4。
比如：第一指定周期集合中包括的指定周期值分别是40毫秒、80毫秒、160毫秒、320毫秒，若第一周期为320毫秒，此时可以从40毫秒、80毫秒和160毫秒中选取40毫秒作为第二周期。同理，也可以根据实际情况选取80毫秒或160毫秒作为第二周期。
由上述实施例可见，根据第一网络信号条件和第二网络信号条件在确定对第一周期进行缩短时，可以从第一指定周期集合中选取小于第一周期的另一指定周期值，并将该另一指定周期值确定为第二周期，从而提高了确定第二周期的可靠性。
图5是根据一示例性实施例示出的另一种车联网同步方法的流程图，该车联网同步方法可以用于第一终端，并建立在图4所示方法的基础上，在执行步骤130时，如图5所示，可以包括以下步骤510-520：
在步骤510中，若第一终端处于直连通信状态，则通过专用信令且按照第二周期将直连同步信号发送至第二终端。
本公开实施例中，直连通信状态可以指的是第一终端正在和其他直连终端通信。
在一实施例中，上述步骤510中的专用信令可以包括RRC(Radio Resource Control，无线资源控制)信令。也就是说，若第一终端处于直连通信状态，可以将按照第二周期发送的直连同步信号添加到RRC信令中，再将RRC信令发送至第二终端，这样第二终端就可以从RRC信令获知按照第二周期发送的直连同步信号，并根据该直连同步信号进行车联网同步。
在步骤520中，若第一终端处于非直连通信状态，则通过PSBCH(Physical Sidelink Broadcast Channel，物理直连广播信道)且按照第二周期将直连同步信号发送至第二终端。
本公开实施例中，非直连通信状态可以指的是第一终端没有正在和其他直连终端通信。也就是说，若第一终端处于非直连通信状态，就可以通过PSBCH广播按照第二周期发送的直连同步信号。
由上述实施例可见，若第一终端处于直连通信状态，可以通过专用信令且按照第二周期将直连同步信号发送至第二终端；若第一终端处于非直连通信状态，可以通过PSBCH且按照第二周期将直连同步信号发送至第二终端，从而保证了直连同步信号期传输的可靠性，还提高了车联网同步的效率。
图6是根据一示例性实施例示出的另一种车联网同步方法的流程图，该车联网同步方法可以用于第一终端，并建立在图1所示方法的基础上，所述第一网络信号条件包括以下至少一项：GNSS信号的强度小于第三指定阈值；基站的信号强度小于第四指定阈值。所述第二网络信号条件包括以下至少一项：所述GNSS信号的强度大于所述第三指定阈值；所述基站的信号强度大于所述第四指定阈值。所述设定规则中包括第二指定周期集合；在一实施例中，所述设定规则可以是基于通信协议规定的、或以固件方式存储在所述第一终端中的。在执行步骤120时，如图6所示，可以包括以下步骤610-620：
在步骤610中，根据第一网络信号条件和第二网络信号条件，确定对第一周期进行延长。
本公开实施例中，若第一网络信号条件包括GNSS信号的强度小于第三指定阈值、和/或基站的信号强度小于第四指定阈值；而第二网络信号条件包括所述GNSS信号的强度大于所述第三指定阈值、和/或所述基站的信号强度大于所述第四指定阈值，均表明第二网络信号条件优于第一网络信号条件，此时为了降低能耗，可以调大直连同步信号的发送周期，即延长同步信号的发送周期。
在步骤620中，从第二指定周期集合中选取大于第一周期的再一指定周期值，并将再一指定周期值确定为第二周期。
本公开实施例中，第二指定周期集合中包括的指定周期值的数量一般大于1、且小于等于4。
比如：第二指定周期集合中包括的指定周期值分别是40毫秒、80毫秒、160毫秒、320毫秒，若第一周期为40毫秒，此时可以80毫秒、160毫秒和320毫秒中选取320毫秒作为第二周期。同理，也可以根据实际情况选取80毫秒或160毫秒作为第二周期。
由上述实施例可见，根据第一网络信号条件和第二网络信号条件在确定对第一周期进行延长时，可以从第二数量个指定周期值中选取大于第一周期的再一指定周期值，并将再一指定周期值确定为第二周期，从而提高了确定第二周期的准确性。
图7是根据一示例性实施例示出的另一种车联网同步方法的流程图，该车联网同步方法可以用于第一终端，并建立在图6所示方法的基础上，在执行步骤130时，如图7所示，可以包括以下步骤710-720：
在步骤710中，若第一终端处于直连通信状态，则继续按照第一周期将直连同步信号发送至第二终端。
本公开实施例中，直连通信状态可以指的是第一终端正在和其他直连终端通信。若第一终端处于直连通信状态，为了保证通信质量，可以继续按照第一周期将直连同步信号发送至第二终端。也就是说，由于第二周期大于第一周期，按照第二周期将直连同步信号发送至第二终端的目的是为了节省链路开销，若节省链路开销和通信质量相对比，通信质量更重要，所以此时可以继续按照第一周期将直连同步信号发送至第二终端，直到第一终端处于非直连通信状态时，若第二网络信号条件还保持不变，此时也可以继续按照第二周期将直连同步信号发送至第二终端。
在一实施例中，上述步骤710中的专用信令可以包括RRC信令。也就是说，若第一终端处于直连通信状态，可以将按照第一周期发送的直连同步信号添加到RRC信令中，再将RRC信令发送至第二终端，这样第二终端就可以从RRC信令获知按照第一周期发送的直连同步信号，并根据该直连同步信号进行车联网同步。
在步骤720中，若第一终端处于非直连通信状态，则通过PSBCH(Physical Sidelink Broadcast Channel，物理直连广播信道)且按照第二周期将直连同步信号发送至第二终端。
本公开实施例中，非直连通信状态可以指的是第一终端没有正在和其他直连终端通信。也就是说，若第一终端处于非直连通信状态，就可以通过PSBCH广播按照第二周期发送的直连同步信号。
由上述实施例可见，若第一终端处于直连通信状态，可以继续按照第一周期将直连同步信号发送至第二终端；若第一终端处于非直连通信状态，可以通过PSBCH且按照第二周期将直连同步信号发送至第二终端，从而提高了车联网同步的实用性。
与前述车联网同步方法的实施例相对应，本公开还提供了车联网同步装置的实施例。
图8是根据一示例性实施例示出的一种车联网同步装置的框图，该装置可以应用于第一终端，所述第一终端用于表征直连同步信号的发送端，并用于执行图1所示的车联网同步方法，如图8所示，该车联网同步装置可以包括：
确定模块81，被配置为确定在第一网络信号条件下所述直连同步信号的发送周期为第一周期；
调整模块82，被配置为若检测到第二网络信号条件，所述第二网络信号条件与所述第一网络信号条件不同，则按照设定规则对所述直连同步信号的发送周期进行调整，得到调整后的第二周期，所述第二周期与所述第一周期不同；
发送模块83，被配置为按照所述第二周期将所述直连同步信号发送至需要同步的一个或多个第二终端，所述第二终端用于表征所述直连同步信号的接收端，以使所述第二终端根据接收到的所述直连同步信号进行车联网同步。
由上述实施例可见，在确定在第一网络信号条件下直连同步信号的发送周期为第一周期时，若检测到第二网络信号条件，该第二网络信号条件与第一网络信号条件 不同，则可以按照设定规则对直连同步信号的发送周期进行调整，得到调整后的第二周期，第二周期与第一周期不同，以及按照第二周期将直连同步信号发送至第二终端，第二终端用于表征直连同步信号的接收端，这样第二终端就可以根据接收到的直连同步信号进行车联网同步，从而实现了根据网络信号的变化来调整直连同步信号的发送周期，在保证了获得合理化的车联网同步效果的同时，还节省了能耗。
在一实施例中，建立在图8所示装置的基础上，如图9所示，所述设定规则中可以包括指定网络信号条件与指定发送周期之间的指定对应关系；所述调整模块82可以包括：
第一确定子模块91，被配置为根据所述指定对应关系确定所述第二网络信号条件对应的所述指定发送周期；
第二确定子模块92，被配置为将所述第二网络信号条件对应的所述指定发送周期确定为所述第二周期。
由上述实施例可见，可以根据设定规则中的指定对应关系确定第二网络信号条件对应的指定发送周期，并将第二网络信号条件对应的指定发送周期确定为第二周期，从而提高了确定第二周期的效率。
在一实施例中，建立在图8所示装置的基础上，所述第一网络信号条件可以包括以下至少一项：
GNSS的信号强度大于第一指定阈值；
基站的信号强度大于第二指定阈值。
在一实施例中，建立在上述实施例所示装置的基础上，所述第二网络信号条件可以包括以下至少一项：
所述GNSS的信号强度小于所述第一指定阈值；
所述基站的信号强度小于所述第二指定阈值。
在一实施例中，建立在上述实施例所示装置的基础上，如图10所示，所述设定规则中可以包括第一指定周期集合；所述调整模块82可以包括：
第三确定子模块101，被配置为根据所述第一网络信号条件和所述第二网络信号条件，确定对所述第一周期进行缩短；
第一选取子模块102，被配置为从所述第一指定周期集合中选取小于所述第一周期的另一指定周期值，并将所述另一指定周期值确定为所述第二周期。
由上述实施例可见，根据第一网络信号条件和第二网络信号条件在确定对第一周期进行缩短时，可以从第一指定周期集合中选取小于第一周期的另一指定周期值，并将该另一指定周期值确定为第二周期，从而提高了确定第二周期的可靠性。
在一实施例中，建立在图10所示装置的基础上，如图11所示，所述发送模块83可以包括：
第一处理子模块111，被配置为若所述第一终端处于直连通信状态，则通过专用信令且按照所述第二周期将所述直连同步信号发送至所述第二终端；
第二处理子模块112，被配置为若所述第一终端处于非直连通信状态，则通过物理直连广播信道PSBCH且按照所述第二周期将所述直连同步信号发送至所述第二终端。
由上述实施例可见，若第一终端处于直连通信状态，可以通过专用信令且按照第二周期将直连同步信号发送至第二终端；若第一终端处于非直连通信状态，可以通过PSBCH且按照第二周期将直连同步信号发送至第二终端，从而保证了直连同步信号期传输的可靠性，还提高了车联网同步的效率。
在一实施例中，建立在图11所示装置的基础上，所述专用信令可以包括RRC信令。
在一实施例中，建立在图8所示装置的基础上，所述第一网络信号条件可以包括以下至少一项：
GNSS信号的强度小于第三指定阈值；
基站的信号强度小于第四指定阈值。
在一实施例中，建立在上述实施例所示装置的基础上，所述第二网络信号条件可以包括以下至少一项：
所述GNSS信号的强度大于所述第三指定阈值；
所述基站的信号强度大于所述第四指定阈值。
在一实施例中，建立在上述实施例所示装置的基础上，如图12所示，所述设 定规则中可以包括第二指定周期集合；所述调整模块82可以包括：
第四确定子模块121，被配置为根据所述第一网络信号条件和所述第二网络信号条件，确定对所述第一周期进行延长；
第二选取子模块122，被配置为从所述第二指定周期集合中选取大于所述第一周期的再一指定周期值，并将所述再一指定周期值确定为所述第二周期。
由上述实施例可见，根据第一网络信号条件和第二网络信号条件在确定对第一周期进行延长时，可以从第二数量个指定周期值中选取大于第一周期的再一指定周期值，并将再一指定周期值确定为第二周期，从而提高了确定第二周期的准确性。
在一实施例中，建立在图12所示装置的基础上，如图13所示，所述发送模块83可以包括：
第三处理子模块131，被配置为若所述第一终端处于直连通信状态，则继续按照所述第一周期将所述直连同步信号发送至所述第二终端；
第四处理子模块132，被配置为若所述第一终端处于非直连通信状态，则通过PSBCH且按照所述第二周期将所述直连同步信号发送至所述第二终端。
由上述实施例可见，若第一终端处于直连通信状态，可以继续按照第一周期将直连同步信号发送至第二终端；若第一终端处于非直连通信状态，可以通过PSBCH且按照第二周期将直连同步信号发送至第二终端，从而提高了车联网同步的实用性。
在一实施例中，建立在图9或图10或图12所示装置的基础上，所述设定规则可以是基于通信协议规定的、或以固件方式存储在所述第一终端中的。
对于装置实施例而言，由于其基本对应于方法实施例，所以相关之处参见方法实施例的部分说明即可。以上所描述的装置实施例仅仅是示意性的，其中上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模块来实现本公开方案的目的。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
相应地，本公开还提供了一种非临时计算机可读存储介质，所述存储介质上存储有计算机程序，所述计算机程序用于执行上述图1至图7任一所述的车联网同步方 法。
相应地，本公开还提供了一种车联网同步装置，其特征在于，所述装置用于第一终端，所述第一终端用于表征直连同步信号的发送端，所述装置包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
确定在第一网络信号条件下所述直连同步信号的发送周期为第一周期；
若检测到第二网络信号条件，所述第二网络信号条件与所述第一网络信号条件不同，则按照设定规则对所述直连同步信号的发送周期进行调整，得到调整后的第二周期，所述第二周期与所述第一周期不同；
按照所述第二周期将所述直连同步信号发送至需要同步的一个或多个第二终端，所述第二终端用于表征所述直连同步信号的接收端，以使所述第二终端根据接收到的所述直连同步信号进行车联网同步。
图14是根据一示例性实施例示出的一种车联网同步装置的结构示意图。如图14所示，根据一示例性实施例示出的一种车联网同步装置1400，该装置1400可以是计算机，移动电话，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等终端。
参照图14，装置1400可以包括以下一个或多个组件：处理组件1401，存储器1402，电源组件1403，多媒体组件1404，音频组件1405，输入/输出(I/O)的接口1406，传感器组件1407，以及通信组件1408。
处理组件1401通常控制装置1400的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件1401可以包括一个或多个处理器1409来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件1401可以包括一个或多个模块，便于处理组件1401和其它组件之间的交互。例如，处理组件1401可以包括多媒体模块，以方便多媒体组件1404和处理组件1401之间的交互。
存储器1402被配置为存储各种类型的数据以支持在装置1400的操作。这些数据的示例包括用于在装置1400上操作的任何应用程序或方法的指令，联系人数据，电 话簿数据，消息，图片，视频等。存储器1402可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件1403为装置1400的各种组件提供电力。电源组件1403可以包括电源管理系统，一个或多个电源，及其它与为装置1400生成、管理和分配电力相关联的组件。
多媒体组件1404包括在所述装置1400和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件1404包括一个前置摄像头和/或后置摄像头。当装置1400处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件1405被配置为输出和/或输入音频信号。例如，音频组件1405包括一个麦克风(MIC)，当装置1400处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器1402或经由通信组件1408发送。在一些实施例中，音频组件1405还包括一个扬声器，用于输出音频信号。
I/O接口1406为处理组件1401和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件1407包括一个或多个传感器，用于为装置1400提供各个方面的状态评估。例如，传感器组件1407可以检测到装置1400的打开/关闭状态，组件的相对定位，例如所述组件为装置1400的显示器和小键盘，传感器组件1407还可以检测装置1400或装置1400一个组件的位置改变，用户与装置1400接触的存在或不存在，装置1400方位或加速/减速和装置1400的温度变化。传感器组件1407可以包括接近传 感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件1407还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件1407还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件1408被配置为便于装置1400和其它设备之间有线或无线方式的通信。装置1400可以接入基于通信标准的无线网络，如WiFi，2G或3G，或它们的组合。在一个示例性实施例中，通信组件1408经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信组件1408还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其它技术来实现。
在示例性实施例中，装置1400可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其它电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器1402，上述指令可由装置1400的处理器1409执行以完成上述方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
其中，当所述存储介质中的指令由所述处理器执行时，使得装置1400能够执行上述任一所述的车联网同步方法。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (26)

  1. 一种车联网同步方法，其特征在于，所述方法用于第一终端，所述第一终端用于表征直连同步信号的发送端，所述方法包括：
    确定在第一网络信号条件下所述直连同步信号的发送周期为第一周期；
    若检测到第二网络信号条件，所述第二网络信号条件与所述第一网络信号条件不同，则按照设定规则对所述直连同步信号的发送周期进行调整，得到调整后的第二周期，所述第二周期与所述第一周期不同；
    按照所述第二周期将所述直连同步信号发送至需要同步的一个或多个第二终端，所述第二终端用于表征所述直连同步信号的接收端，以使所述第二终端根据接收到的所述直连同步信号进行车联网同步。
  2. 根据权利要求1所述的方法，其特征在于，所述设定规则中包括指定网络信号条件与指定发送周期之间的指定对应关系；
    所述按照设定规则对所述直连同步信号的发送周期进行调整，得到调整后的第二周期，包括：
    根据所述指定对应关系确定所述第二网络信号条件对应的所述指定发送周期；
    将所述第二网络信号条件对应的所述指定发送周期确定为所述第二周期。
  3. 根据权利要求1所述的方法，其特征在于，所述第一网络信号条件包括以下至少一项：
    全球导航卫星系统GNSS的信号强度大于第一指定阈值；
    基站的信号强度大于第二指定阈值。
  4. 根据权利要求3所述的方法，其特征在于，所述第二网络信号条件包括以下至少一项：
    所述GNSS的信号强度小于所述第一指定阈值；
    所述基站的信号强度小于所述第二指定阈值。
  5. 根据权利要求4所述的方法，其特征在于，所述设定规则中包括第一指定周期集合；
    所述按照设定规则对所述直连同步信号的发送周期进行调整，得到调整后的第二周期，包括：
    根据所述第一网络信号条件和所述第二网络信号条件，确定对所述第一周期进行缩短；
    从所述第一指定周期集合中选取小于所述第一周期的另一指定周期值，并将所述另一指定周期值确定为所述第二周期。
  6. 根据权利要求5所述的方法，其特征在于，所述按照所述第二周期将所述直连同步信号发送至一个或多个第二终端，包括：
    若所述第一终端处于直连通信状态，则通过专用信令且按照所述第二周期将所述直连同步信号发送至所述第二终端；
    若所述第一终端处于非直连通信状态，则通过物理直连广播信道PSBCH且按照所述第二周期将所述直连同步信号发送至所述第二终端。
  7. 根据权利要求6所述的方法，其特征在于，所述专用信令包括无线资源控制RRC信令。
  8. 根据权利要求1所述的方法，其特征在于，所述第一网络信号条件包括以下至少一项：
    GNSS信号的强度小于第三指定阈值；
    基站的信号强度小于第四指定阈值。
  9. 根据权利要求8所述的方法，其特征在于，所述第二网络信号条件包括以下至少一项：
    所述GNSS信号的强度大于所述第三指定阈值；
    所述基站的信号强度大于所述第四指定阈值。
  10. 根据权利要求9所述的方法，其特征在于，所述设定规则中包括第二指定周期集合；
    所述按照设定规则对所述直连同步信号的发送周期进行调整，得到调整后的第二周期，包括：
    根据所述第一网络信号条件和所述第二网络信号条件，确定对所述第一周期进行延长；
    从所述第二指定周期集合中选取大于所述第一周期的再一指定周期值，并将所述再一指定周期值确定为所述第二周期。
  11. 根据权利要求10所述的方法，其特征在于，所述按照所述第二周期将所述直连同步信号发送至一个或多个第二终端，包括：
    若所述第一终端处于直连通信状态，则继续按照所述第一周期将所述直连同步信号发送至所述第二终端；
    若所述第一终端处于非直连通信状态，则通过PSBCH且按照所述第二周期将所述直连同步信号发送至所述第二终端。
  12. 根据权利要求2或5或10所述的方法，其特征在于，所述设定规则是基于通信协议规定的、或以固件方式存储在所述第一终端中的。
  13. 一种车联网同步装置，其特征在于，所述装置用于第一终端，所述第一终端用于表征直连同步信号的发送端，所述装置包括：
    确定模块，被配置为确定在第一网络信号条件下所述直连同步信号的发送周期为第一周期；
    调整模块，被配置为若检测到第二网络信号条件，所述第二网络信号条件与所述第一网络信号条件不同，则按照设定规则对所述直连同步信号的发送周期进行调整，得到调整后的第二周期，所述第二周期与所述第一周期不同；
    发送模块，被配置为按照所述第二周期将所述直连同步信号发送至需要同步的一个或多个第二终端，所述第二终端用于表征所述直连同步信号的接收端，以使所述第二终端根据接收到的所述直连同步信号进行车联网同步。
  14. 根据权利要求13所述的装置，其特征在于，所述设定规则中包括指定网络信号条件与指定发送周期之间的指定对应关系；所述调整模块包括：
    第一确定子模块，被配置为根据所述指定对应关系确定所述第二网络信号条件对应的所述指定发送周期；
    第二确定子模块，被配置为将所述第二网络信号条件对应的所述指定发送周期确定为所述第二周期。
  15. 根据权利要求13所述的装置，其特征在于，所述第一网络信号条件包括以下至少一项：
    全球导航卫星系统GNSS的信号强度大于第一指定阈值；
    基站的信号强度大于第二指定阈值。
  16. 根据权利要求15所述的装置，其特征在于，所述第二网络信号条件包括以下至少一项：
    所述GNSS的信号强度小于所述第一指定阈值；
    所述基站的信号强度小于所述第二指定阈值。
  17. 根据权利要求16所述的装置，其特征在于，所述设定规则中包括第一指定周期集合；所述调整模块包括：
    第三确定子模块，被配置为根据所述第一网络信号条件和所述第二网络信号条件，确定对所述第一周期进行缩短；
    第一选取子模块，被配置为从所述第一指定周期集合中选取小于所述第一周期的另一指定周期值，并将所述另一指定周期值确定为所述第二周期。
  18. 根据权利要求17所述的装置，其特征在于，所述发送模块包括：
    第一处理子模块，被配置为若所述第一终端处于直连通信状态，则通过专用信令且按照所述第二周期将所述直连同步信号发送至所述第二终端；
    第二处理子模块，被配置为若所述第一终端处于非直连通信状态，则通过物理直连广播信道PSBCH且按照所述第二周期将所述直连同步信号发送至所述第二终端。
  19. 根据权利要求18所述的装置，其特征在于，所述专用信令包括无线资源控制RRC信令。
  20. 根据权利要求13所述的装置，其特征在于，所述第一网络信号条件包括以下至少一项：
    GNSS信号的强度小于第三指定阈值；
    基站的信号强度小于第四指定阈值。
  21. 根据权利要求20所述的装置，其特征在于，所述第二网络信号条件包括以下至少一项：
    所述GNSS信号的强度大于所述第三指定阈值；
    所述基站的信号强度大于所述第四指定阈值。
  22. 根据权利要求21所述的装置，其特征在于，所述设定规则中包括第二指定周期集合；所述调整模块包括：
    第四确定子模块，被配置为根据所述第一网络信号条件和所述第二网络信号条件，确定对所述第一周期进行延长；
    第二选取子模块，被配置为从所述第二指定周期集合中选取大于所述第一周期的再一指定周期值，并将所述再一指定周期值确定为所述第二周期。
  23. 根据权利要求22所述的装置，其特征在于，所述发送模块包括：
    第三处理子模块，被配置为若所述第一终端处于直连通信状态，则继续按照所述第一周期将所述直连同步信号发送至所述第二终端；
    第四处理子模块，被配置为若所述第一终端处于非直连通信状态，则通过PSBCH且按照所述第二周期将所述直连同步信号发送至所述第二终端。
  24. 根据权利要求14或17或22所述的装置，其特征在于，所述设定规则是基于通信协议规定的、或以固件方式存储在所述第一终端中的。
  25. 一种非临时计算机可读存储介质，所述存储介质上存储有计算机程序，其特征在于，所述计算机程序用于执行上述权利要求1-12任一所述的车联网同步方法。
  26. 一种车联网同步装置，其特征在于，所述装置用于第一终端，所述第一终端用于表征直连同步信号的发送端，所述装置包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    确定在第一网络信号条件下所述直连同步信号的发送周期为第一周期；
    若检测到第二网络信号条件，所述第二网络信号条件与所述第一网络信号条件不同，则按照设定规则对所述直连同步信号的发送周期进行调整，得到调整后的第二周期，所述第二周期与所述第一周期不同；
    按照所述第二周期将所述直连同步信号发送至需要同步的一个或多个第二终端，所述第二终端用于表征所述直连同步信号的接收端，以使所述第二终端根据接收到的所述直连同步信号进行车联网同步。
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