WO2018027790A1 - 传输数据的方法和装置 - Google Patents

传输数据的方法和装置 Download PDF

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Publication number
WO2018027790A1
WO2018027790A1 PCT/CN2016/094607 CN2016094607W WO2018027790A1 WO 2018027790 A1 WO2018027790 A1 WO 2018027790A1 CN 2016094607 W CN2016094607 W CN 2016094607W WO 2018027790 A1 WO2018027790 A1 WO 2018027790A1
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WIPO (PCT)
Prior art keywords
synchronization source
synchronization
carrier frequency
configuration information
source
Prior art date
Application number
PCT/CN2016/094607
Other languages
English (en)
French (fr)
Inventor
李明超
曹振臻
肖潇
韩广林
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.)
Filing date
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 KR1020197005749A priority Critical patent/KR102209453B1/ko
Priority to EP16912245.4A priority patent/EP3484217B1/en
Priority to CN201910506946.8A priority patent/CN110278606B/zh
Priority to JP2019507131A priority patent/JP6886511B2/ja
Priority to EP20214795.5A priority patent/EP3855814A1/en
Priority to PCT/CN2016/094607 priority patent/WO2018027790A1/zh
Priority to CN201680087663.9A priority patent/CN109479248B/zh
Publication of WO2018027790A1 publication Critical patent/WO2018027790A1/zh
Priority to US16/271,954 priority patent/US20190174444A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • H04W56/0015Synchronization between nodes one node acting as a reference for the others
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/02Selection of wireless resources by user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/40Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]

Definitions

  • Embodiments of the present invention relate to the field of wireless communications and, more particularly, to methods and apparatus for transmitting data.
  • in-vehicle equipment can communicate with vehicle to vehicle (V2V), vehicle to infrastructure (V2I) communication, vehicle to Pedestrian (V2P) communication, and vehicle equipment.
  • Network (Vehicle to Network, V2N) communication, etc. timely obtain road condition information or receive information service.
  • V2V and V2I Take the common V2V and V2I as an example: the V2V communication of the vehicle-mounted equipment can broadcast information such as its own speed, direction of travel, specific position, and whether or not the emergency brake is applied to the surrounding vehicle-mounted equipment, so that the driver can obtain such information. Better perceive traffic conditions outside the line of sight, thus making early predictions of dangerous conditions and making avoidance.
  • V2I communication in addition to the above-mentioned interaction of security information, the roadside infrastructure can also provide various types of service information, access to data networks, non-stop charging, and in-vehicle entertainment for in-vehicle devices, thereby improving traffic intelligence.
  • V2X vehicle-to-Everything
  • the data transmitted between V2X is called V2X data
  • the network used by V2X communication is called car networking.
  • the transmission carrier frequency used by the user equipment (User Equipment, UE) to transmit the V2X and the service carrier frequency of the UE camping may be different carrier frequencies, that is, the transmission carrier frequency and the service carrier frequency may be located at different frequency points.
  • the base station can configure the synchronization source for the transmission carrier frequency used by the UE to transmit the V2X data through the service carrier frequency, and the UE can obtain the synchronization clock on the transmission carrier frequency according to the synchronization source, and Data transfer.
  • the global navigation satellite system GNSS
  • the resources configured by the base station for the UE are all configured with reference to the synchronization source clock (ie, the GNSS clock).
  • the UE may calculate the frame number and the subframe number corresponding to the time according to the specific GNSS time.
  • the base station When the base station allocates resources for the UE, it refers to the GNSS clock to indicate the specific time-frequency location of the transmission resources that the UE can use (eg, all frequency domain resources of the 10th subframe of the #1 frame can be used to transmit V2X data).
  • the frame number and the subframe number corresponding to the current GNSS time reach the time when the base station allocates resources, The UE can send data.
  • the UE may sometimes be out of synchronization with the synchronization source, that is, the synchronization of the UE with the synchronization source fails. For example, when the UE enters the tunnel or the base pool, the UE may not receive the signal transmitted by the GNSS. At this time, the UE cannot obtain the frame number and the subframe number, and the UE cannot determine the effective time of the resource allocated by the base station, and cannot normally transmit data.
  • the embodiments of the present invention provide a method and an apparatus for transmitting data, which can still implement normal data transmission after the user equipment and the synchronization source are out of synchronization.
  • a first aspect includes: a user equipment UE receiving first synchronization source configuration information on a first carrier frequency, where the first synchronization source configuration information is used to determine a first synchronization source; Determining, by the UE, the first synchronization source according to the first synchronization source configuration information, where the first synchronization source is used to provide the UE with a synchronization clock required for transmitting data on the second carrier frequency, where the first carrier frequency The frequency point is different from the frequency of the second carrier frequency; the UE determines synchronization failure with the first synchronization source; the UE determines a second synchronization source and transmission resource; and the UE is according to the second synchronization The source transmits the data on the second carrier frequency using the transmission resource.
  • the user equipment determines the required synchronization source for transmitting data according to the synchronization source information configured by the base station, and after the UE and the synchronization source are out of synchronization, re-determines a new synchronization source, and uses the new synchronization source for data transmission.
  • the frequency of the transmission carrier frequency and the service carrier frequency can be different, and after the UE and the original synchronization source are out of synchronization, the normal transmission of data can still be realized.
  • the data can be Device-to-Device (D2D) data, V2X data, and other data transmitted via direct-connection communication.
  • D2D Device-to-Device
  • V2X data V2X service related data.
  • the UE may remain within the network coverage of the base station. That is, the UE measures the signal quality of the base station to meet the access requirement, and the UE can normally exchange signaling and data with the base station in the connected state, and the UE can normally receive the system information and paging information sent by the base station in the idle (IDLE) state. .
  • the method further includes: determining, by the UE, that the synchronization failure with the first synchronization source includes any one of the following: a synchronization timer of the UE exceeds a set time, and the UE is still When the synchronization signal of the first synchronization source is not received, the UE determines that the synchronization with the first synchronization source is invalid; the strength of the synchronization signal of the first synchronization source received by the UE is less than the first When the threshold is preset, the UE determines that the synchronization with the first synchronization source is invalid; the average strength of the synchronization signal of the first synchronization source received by the UE within the specified duration T is less than the second preset. At the threshold, the UE determines that the synchronization with the first synchronization source has failed.
  • the timing at which the synchronization timer starts counting may be the time at which the synchronization signal was last received.
  • the UE determines that the synchronization failure with the first synchronization source includes: the UE detects the second synchronization source, and the signal strength of the second synchronization source is greater than a third preset. The threshold value, and when the priority of the second synchronization source is higher than the priority of the first synchronization source, the UE determines that the synchronization with the first synchronization source fails.
  • the method further includes: determining, by the UE, a priority of the first synchronization source and the second synchronization source according to the first pre-configuration information; or, the UE is in the Receiving a broadcast message on a carrier frequency, determining a priority of the first synchronization source and the second synchronization source according to the broadcast message; or, the UE receiving a radio resource control RRC dedicated on the first carrier frequency And signaling, determining a priority of the first synchronization source and the second synchronization source according to the RRC dedicated signaling.
  • the first pre-configuration information, the broadcast message, or the RRC dedicated signaling includes priority information of the synchronization source.
  • the first synchronization source configuration information includes priority information of the synchronization source, and the priorities of the first synchronization source and the second synchronization source may be determined according to the first synchronization source configuration information.
  • the determining, by the UE, the second synchronization source and the transmission resource required for transmitting the data includes: obtaining, by the UE, by using pre-configuration information or by using signaling configuration information received on the first carrier frequency. a second synchronization source configuration information, where the second synchronization source configuration information carries an identifier of the second synchronization source, and the UE determines the second synchronization source according to the identifier of the second synchronization source; or the UE The clock of the UE is used as the second synchronization source.
  • the UE when detecting a new synchronization source to determine that the first synchronization source fails, the UE determines, according to the identifier of the second synchronization source, that the second synchronization source may be the second synchronization source according to the identifier according to the identifier. Performing detection, when detecting that the signal strength of the second synchronization source is greater than a certain value, and the priority of the second synchronization source is higher than the priority of the first synchronization source, the first synchronization source may be determined to be invalid, and the second synchronization may be performed.
  • the source acts as a new synchronization source.
  • the determining, by the UE, the second synchronization source and the transmission resource includes: The UE obtains the resource pool configuration information, where the resource pool configuration information is pre-configured or obtained according to the signaling configuration information received on the first carrier frequency; the UE determines the transmission resource pool according to the resource pool configuration information, and according to the The transmission resource pool determines the transmission resource.
  • the determining, by the UE, the second synchronization source and the transmission resource includes: the UE receiving resource scheduling information on the first carrier frequency; and determining, by the UE, the transmission according to the resource scheduling information.
  • the resource scheduling information is dynamic scheduling information or semi-static scheduling information.
  • the method further includes: after the UE determines that the synchronization with the first synchronization source is invalid, the UE sends indication information to the access network device, where the indication information is used by Instructing synchronization of the UE with the first synchronization source to be invalid.
  • the method further includes: the UE sending the identifier information of the second synchronization source to the access network device, where the identifier information of the second synchronization source is used to indicate The UE transmits the data at the second carrier frequency according to a clock of the second synchronization source.
  • the identifier information of the first synchronization source carries the identifier of the first synchronization source
  • the determining, by the UE, the first synchronization source according to the first synchronization source configuration information includes: The UE determines the first synchronization source according to the identifier information of the first synchronization source.
  • the first synchronization source is a Global Navigation Satellite System (GNSS).
  • GNSS Global Navigation Satellite System
  • the embodiment of the present invention does not specifically limit the synchronization source used.
  • the synchronization source in the embodiment of the present invention may be a mobile terminal synchronized with the GNSS, a cell synchronized with the GNSS, a current cell serving the UE, a preset cell, and the like.
  • the transmitting, by the UE, the data on the second carrier frequency by using the transmission resource according to the second synchronization source includes: the UE is according to the second synchronization source, The data is transmitted by means of direct communication on the second carrier frequency.
  • the V2X data transmission mode may be a direct connection communication mode, or may be a communication mode in which a base station performs transit.
  • the data is that the in-vehicle device communicates data with other devices V2X.
  • the data in the embodiment of the present invention may be V2X communication data between the in-vehicle device and other devices, so that the V2X data transmission enables the driver to perceive the traffic condition outside the line of sight, and can make a pre-judgment of the dangerous state to make a avoidance. Reduce the occurrence of traffic accidents.
  • the second aspect provides a method for transmitting data, where the access network device sends the first synchronization source configuration information to the user equipment UE by using the first carrier frequency, where the first synchronization source configuration information carries the first synchronization source. Identifying, the first synchronization source configuration information is used to determine the first synchronization source; The access network device receives the indication information sent by the UE on the first carrier frequency, where the indication information is used to indicate that the synchronization between the UE and the first synchronization source is invalid, and the first synchronization source is used to The UE provides a synchronization clock required to transmit data on the second carrier frequency, and the frequency of the first carrier frequency and the frequency of the second carrier frequency are different.
  • the access network device in the embodiment of the present invention after configuring the synchronization source for the UE, may receive the indication information that the synchronization failure of the UE and the synchronization source is invalid after the UE and the synchronization source are invalid, so that after the UE and the synchronization source are invalid, The access network device may not send signaling to the UE according to the indication information to configure a resource corresponding to the first synchronization source for the UE, which can save signaling overhead.
  • the method further includes: the access network device transmitting second synchronization source configuration information to the UE on the first carrier frequency, so that the UE is in the After the synchronization of the synchronization source fails, the second synchronization source is determined according to the second synchronization source configuration information, and the data is transmitted on the second carrier frequency according to the second synchronization source.
  • the access network device may send a transmission resource corresponding to the second synchronization source to the UE, and send the transmission resource to the UE, so that the UE transmits the transmission resource according to the second synchronization source.
  • the data can be such that the UE can still perform normal data transmission after the synchronization of the first synchronization source fails.
  • the data is that the in-vehicle device communicates data with other devices V2X.
  • a third aspect provides an apparatus for transmitting data, including: a receiving unit, configured to receive first synchronization source configuration information on a first carrier frequency, where the first synchronization source configuration information is used to determine a first synchronization source; a unit, configured to determine, according to the first synchronization source configuration information received by the receiving unit, a first synchronization source, where the first synchronization source is configured to provide a synchronization clock required for transmitting data on a second carrier frequency, The frequency of the first carrier frequency is different from the frequency of the second carrier frequency; the processing unit is further configured to determine a synchronization failure with the first synchronization source; the processing unit is further configured to determine the second a synchronization source and a transmission resource; a transmission unit, configured to transmit the data on the second carrier frequency according to the second synchronization source determined by the processing unit and using the transmission resource.
  • the user equipment determines the synchronization source required for the transmission data according to the synchronization source information configured by the base station, and after the UE and the synchronization source are out of synchronization, re-determines the new synchronization source, and uses the new synchronization source to perform data. Transmission, so that the frequency of the transmission carrier frequency and the service carrier frequency are different, and the UE can still achieve normal data transmission after the original synchronization source is out of synchronization.
  • the processing unit is specifically configured to determine, by any one of the following methods, a synchronization failure with the first synchronization source: when the synchronization timer of the UE exceeds a set time, When the UE still does not receive the synchronization signal of the first synchronization source, the UE determines that the synchronization with the first synchronization source is invalid; the strength of the synchronization signal of the first synchronization source received by the UE is less than When the first preset threshold is used, the UE determines that the synchronization with the first synchronization source is invalid; and the average strength of the synchronization signal of the first synchronization source received by the UE within the specified duration T is smaller than When the threshold is preset, the UE determines that the synchronization with the first synchronization source is invalid.
  • the processing unit is configured to: when detecting the second synchronization source, the signal strength of the second synchronization source is greater than a third preset threshold, and the second synchronization source When the priority is higher than the priority of the first synchronization source, the synchronization failure with the first synchronization source is determined.
  • the processing unit is further configured to determine a priority of the first synchronization source and the second synchronization source according to the first pre-configuration information, or receive the first carrier frequency Broadcasting a message, determining a priority of the first synchronization source and the second synchronization source according to the broadcast message, or receiving radio resource control RRC dedicated signaling on the first carrier frequency, according to the RRC dedicated The signaling determines a priority of the first synchronization source and the second synchronization source.
  • the processing unit is further configured to obtain second synchronization source configuration information by using pre-configuration information or by signaling configuration information received on the first carrier frequency, where the second synchronization source configuration
  • the information carries the identifier of the second synchronization source, and the second synchronization source is determined according to the identifier of the second synchronization source, or the method is performed by the user equipment UE, and the clock of the UE is used as the second Synchronization source.
  • the processing unit is specifically configured to acquire resource pool configuration information, where the resource pool configuration information is pre-configured or obtained by using signaling configuration information received on the first carrier frequency, according to The resource pool configuration information determines a transmission resource pool, and determines the transmission resource according to the transmission resource pool.
  • the processing unit is configured to receive resource scheduling information on the first carrier frequency, and determine the transmission resource according to the resource scheduling information, where the resource scheduling information is dynamic scheduling information or Semi-static scheduling information.
  • the apparatus further includes: the apparatus further comprising: a sending unit, configured to send an indication to the access network device after the UE determines that the synchronization with the first synchronization source fails And the indication information is used to indicate synchronization failure with the first synchronization source.
  • a sending unit configured to send an indication to the access network device after the UE determines that the synchronization with the first synchronization source fails
  • the indication information is used to indicate synchronization failure with the first synchronization source.
  • the device is a user equipment UE
  • the device further includes: the device is a user equipment UE
  • the sending unit is further configured to send the second synchronization source to the access network device.
  • Identification information where the identifier information of the second synchronization source is used to indicate that the UE is currently Synchronization source.
  • the identifier information of the first synchronization source carries the identifier of the first synchronization source
  • the processing unit is specifically configured to determine the first synchronization according to the identifier information of the first synchronization source. source.
  • the first synchronization source is a Global Navigation Satellite System (GNSS).
  • GNSS Global Navigation Satellite System
  • the transmission unit is specifically configured to transmit data according to the second synchronization source by using direct communication on the second carrier frequency.
  • the data is that the in-vehicle device communicates data with other devices V2X.
  • the apparatus for transmitting data according to the third aspect of the embodiments of the present invention may correspond to the method of transmitting data in the first aspect of the method embodiment of the present invention, and the respective units/modules in the apparatus and the other operations and/or functions described above In order to implement the corresponding processes in the method shown in the first aspect, for brevity, details are not described herein again.
  • the receiving unit may be a receiver, and the receiver may be configured to receive first synchronization source configuration information on the first carrier frequency, where the first synchronization source configuration information is used to determine the first synchronization source.
  • the receiver can also perform the steps performed by the receiving unit in the possible design of the third aspect described above. To avoid repetition, details are not described herein again.
  • the processing unit may be a processor, and the processor may be configured to determine a first synchronization source according to the first synchronization source configuration information, and further configured to determine synchronization with the first synchronization source. The failure is also used to determine the second synchronization source and transmission resources.
  • the first synchronization source is configured to provide a synchronization clock required for transmitting data on the second carrier frequency, and the frequency of the first carrier frequency and the frequency of the second carrier frequency are different.
  • the processor may perform the steps performed by the processing unit in the possible design of the third aspect described above. To avoid repetition, details are not described herein again.
  • the transmission unit may be a transmitter for transmitting the data on the second carrier frequency using the transmission resource according to the second synchronization source.
  • the transmission unit may be a transmitter, and the transmitter may be configured to transmit on the second carrier frequency according to the second synchronization source determined by the processing unit and using the transmission resource.
  • the data may be a code, and the transmission resource may be a code, and the transmission resource may be a code, and the transmission resource may be a code.
  • the transmitter may perform the steps performed by the transmission unit and/or the transmission unit in the possible design of the third aspect described above. To avoid repetition, details are not described herein again.
  • the fourth aspect provides an apparatus for transmitting data, including: a sending unit, configured to send first synchronization source configuration information to a user equipment UE by using a first carrier frequency, where the first synchronization source configuration information carries a first synchronization source The first synchronization source configuration information is used to determine the first synchronization source, and the receiving unit is configured to receive the indication information sent by the UE on the first carrier frequency, where the indication information is used to indicate the Synchronization of the UE with the first synchronization source, the first synchronization source is used to provide the UE with a synchronization clock required for transmitting data on the second carrier frequency, and the frequency and location of the first carrier frequency The frequency of the second carrier frequency is different.
  • the access network device in the embodiment of the present invention after configuring the synchronization source for the UE, may receive the indication information that the synchronization failure of the UE and the synchronization source is invalid after the UE and the synchronization source are invalid, so that after the UE and the synchronization source are invalid, The access network device can no longer send signaling to the UE according to the indication information to configure resources for the UE, which can save signaling overhead.
  • the sending unit is further configured to send second synchronization source configuration information to the UE on the first carrier frequency, where the second synchronization source configuration information is used by the UE After the synchronization of the first synchronization source fails, the second synchronization source is determined according to the second synchronization source configuration information, and the data is transmitted on the second carrier frequency according to the second synchronization source.
  • the apparatus for transmitting data according to the fourth aspect of the embodiments of the present invention may correspond to the method of transmitting data in the second aspect of the method embodiment of the present invention, and each unit/module in the apparatus and the other operations and/or functions described above In order to implement the corresponding processes in the method shown in the second aspect, for brevity, details are not described herein again.
  • the sending unit may be a transmitter, and the transmitter may be configured to send first synchronization source configuration information to the user equipment UE by using the first carrier frequency, where the first synchronization source configuration information carries An identifier of the first synchronization source, where the first synchronization source configuration information is used to determine the first synchronization source.
  • the receiving unit may be a receiver, and the receiver may be configured to receive indication information on the first carrier frequency, where the indication information is used to indicate that the UE is synchronized with the first Synchronization failure of the source, the first synchronization source is configured to provide the UE with a synchronization clock required for transmitting data on the second carrier frequency, the frequency of the first carrier frequency and the frequency of the second carrier frequency The point is different.
  • the transmitter may be further configured to send second synchronization source configuration information to the UE, where the second synchronization source configuration information is used by the UE in the first synchronization source After the synchronization fails, the second synchronization source is determined according to the second synchronization source configuration information, and the data is transmitted on the second carrier frequency according to the second synchronization source.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use in the access network device, which is designed to perform the foregoing second aspect or the second aspect. program of.
  • the access network device may not send signaling to the UE according to the indication information that the synchronization failure of the synchronization source sent by the UE is sent to the UE to configure the UE to correspond to the first synchronization source. Resources can save signaling overhead.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use by the UE, including a program designed to perform the above first aspect or the possible design of the first aspect.
  • the user equipment determines the required synchronization source for transmitting data according to the synchronization source information configured by the base station, and after the UE and the synchronization source are out of synchronization, re-determines a new synchronization source, and uses the new synchronization source for data transmission.
  • the frequency of the transmission carrier frequency and the service carrier frequency can be different, and after the UE and the original synchronization source are out of synchronization, the normal transmission of data can still be realized.
  • FIG. 1 is a schematic diagram of a scenario of a communication system to which an embodiment of the present invention is applicable.
  • FIG. 2 is a schematic interaction flow diagram of a method of transmitting data according to an embodiment of the present invention.
  • FIG. 3 is a schematic interaction flowchart of a method for transmitting data according to another embodiment of the present invention.
  • FIG. 4 is a block diagram of an apparatus for transmitting data in accordance with an embodiment of the present invention.
  • FIG. 5 is a block diagram of an apparatus for transmitting data in accordance with another embodiment of the present invention.
  • FIG. 6 is a block diagram of an apparatus for transmitting data in accordance with one embodiment of the present invention.
  • FIG. 7 is a block diagram of an apparatus for transmitting data in accordance with another embodiment of the present invention.
  • GSM Global System of Mobile communication
  • CDMA 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
  • the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB, NB) in WCDMA, or may be an evolved base station (Evolved Node B, eNB or e-NodeB) in LTE.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • NB base station
  • Evolved Node B, eNB or e-NodeB evolved base station
  • a user equipment may be referred to as a terminal, a mobile station (Mobile Station, MS), or a mobile terminal (Mobile Terminal).
  • the user equipment may be a radio access network (RAN).
  • Communicating with one or more core networks for example, the user equipment may be a mobile phone (or "cellular" phone) or a computer with a mobile terminal, etc., for example, the user device may also be portable, pocket, handheld, Computer built-in or in-vehicle mobile devices that exchange voice and/or data with a wireless access network.
  • the user equipment in the embodiment of the present invention may refer to an in-vehicle device.
  • FIG. 1 is a schematic diagram of a scenario of a communication system to which an embodiment of the present invention is applicable.
  • the communication system of FIG. 1 includes a user equipment UE 11, a device X 12, an access network device 13, and a synchronization source 14.
  • the UE in the embodiment of the present invention may be an in-vehicle device, and may also be a roadside unit device of a terminal type, a handheld terminal, a wearable device, or the like.
  • the access network device in the embodiment of the present invention may be a base station, a site-based roadside unit, or the like.
  • the device X in the embodiment of the present invention may be any device.
  • the device X may be an in-vehicle device, a network, a pedestrian, a roadside infrastructure, or the like.
  • V2X data transmission can be performed between the UE and the device X, and the UE 11 is under the coverage of the signal of the base station 13.
  • V2X transmission number The transmission carrier frequency and the service carrier frequency of the base station deployed by the UE may be different. In other words, the frequency of the transmission carrier frequency and the service carrier frequency may be different.
  • the synchronization source of the UE on the V2X data transmission carrier frequency can be configured by the service carrier frequency.
  • the base station configures the UE to use the GNSS as the synchronization source of the V2X data transmission carrier frequency, and the base station configures the resource for the UE with reference to the synchronization source GNSS clock.
  • the UE may calculate the number of the frame corresponding to the time and the subframe number according to the GNSS time.
  • the base station allocates resources for the UE, it indicates the specific time-frequency location of the transmission resource that the UE can use, for example, the number of the frame of the transmission resource that the UE can use and the number of the subframe.
  • the UE may transmit data when the number of the frame corresponding to the GNSS time and the subframe number are equal to the number of the frame for the transmission resource and the number of the subframe that the base station has indicated.
  • the UE may be out of synchronization with the synchronization source, that is, the synchronization of the UE with the synchronization source fails. For example, when the UE enters the tunnel or the base pool, the UE may not receive the signal transmitted by the GNSS. At this time, the UE cannot obtain the frame number and the subframe number, and the UE cannot determine the effective time of the resource allocated by the base station, and the data cannot be normally transmitted.
  • the service carrier frequency and the data transmission carrier frequency are located at different carrier frequencies.
  • FIG. 2 is a schematic interaction flow diagram of a method of transmitting data according to an embodiment of the present invention.
  • the access network device is an eNB and the data is V2X data is used as an example, and the data flow is performed by using the information exchange between the UE and the eNB and the UE and the device X as an example.
  • sexual description is used.
  • the eNB sends first synchronization source configuration information to the UE in the first carrier frequency, and the UE receives the first synchronization source configuration information that is sent by the eNB on the first carrier frequency.
  • the eNB sends the first synchronization source configuration information to the UE, where the first synchronization source configuration information can be used to configure the synchronization source required for the UE to transmit the V2X data on the second carrier frequency.
  • the first synchronization source configuration information carries an identifier of the first synchronization source, so that the UE determines, according to the first synchronization source identifier, a synchronization source required for currently transmitting the V2X data.
  • the first synchronization source configuration information in the embodiment of the present invention may indicate that the first synchronization source is any one of a GNSS, a mobile terminal or a cell synchronized with the GNSS, a cell currently serving the UE, a designated cell, and a specified mobile terminal synchronization source.
  • the first synchronization source configuration information may indicate that the first synchronization source is a GNSS, and correspondingly, the identifier of the first synchronization source is a GNSS identifier.
  • the eNB is deployed on the first carrier frequency, and the transmission of the V2X data is located at the second carrier frequency.
  • Frequency of the first carrier frequency It is different from the frequency of the second carrier frequency.
  • the frequency of the first carrier frequency (the service carrier frequency of the UE) may be located at 2 GHz
  • the frequency of the second carrier frequency (the transmission carrier frequency when the UE transmits V2X data) may be located at 5.9 GHz.
  • the service carrier frequency can configure the transmission resources (such as dynamic transmission resources, semi-static transmission resources, transmission resource pools, and reception resource pools) on the transmission carrier frequency for the UE.
  • the configuration information may further include frequency point information of the second carrier frequency, so that the first UE can perform data transmission on the frequency of the second carrier frequency.
  • no base station deployment is performed on the second carrier frequency.
  • the V2X data transmission mode may be a direct communication method in which two devices directly communicate with each other, or a communication method in which a base station performs a relay.
  • the transmission mode of the V2X data on the second carrier frequency is a direct communication mode.
  • the eNB sends the configuration information to the UE by using dedicated signaling of Radio Resource Control (RRC), or by using a broadcast message.
  • RRC Radio Resource Control
  • the UE may remain within the network coverage of the eNB.
  • the UE determines that the signal quality of the base station meets the access requirement, and the UE can normally exchange signaling and data with the base station in the connected state, and the UE can normally receive the system information and paging information sent by the base station in the IDLE state.
  • the UE determines a first synchronization source.
  • the UE receives the first synchronization source configuration information, and uses the first synchronization source as a synchronization source for transmitting V2X data according to the first synchronization source configuration information.
  • the UE may determine the first synchronization source according to the identifier of the first synchronization source.
  • the UE may also implement synchronization between the UE and the first synchronization source.
  • the first synchronization source is a GNSS
  • the UE can directly synchronize with the GNSS system through its own GNSS receiver, and can also use the GNSS clocked mobile terminal as an intermediate synchronization source by searching for a GNSS dedicated direct link synchronization signal. And synchronized with the intermediate synchronization source to achieve synchronization with the GNSS system.
  • the UE can implement data transmission on the corresponding resource according to the synchronization source. For example, after the UE synchronizes with the first synchronization source, the UE may receive resource allocation information sent by the base station.
  • the resource allocation information indicates at least one of available dynamic transmission resources, semi-static transmission resources, transmission resource pools, and reception resource pools available on the direct link.
  • the resource allocation information here is configured with reference to the clock of the first synchronization source.
  • the UE uses the corresponding resource to transmit data according to the received resource allocation information. Specifically, the UE may use the sending resource to send corresponding V2X data, and may receive the corresponding resource by using the receiving resource. V2X data.
  • the UE determines a synchronization failure with the first synchronization source.
  • Step 202 indicates that the UE can implement data transmission on the corresponding resource according to the first synchronization source.
  • the UE may also be out of synchronization with the first synchronization source, for example, when the UE enters a tunnel or a base pool.
  • the synchronization timer in the UE may record the elapsed time after the synchronization signal is received last time.
  • the UE still does not receive the synchronization signal of the first synchronization source, and may first consider that The synchronization of the UE with the first synchronization source fails.
  • the UE may receive the synchronization signal of the synchronization source.
  • the synchronization between the UE and the first synchronization source may be considered invalid.
  • the synchronization between the UE and the first synchronization source may be considered invalid.
  • the synchronization failure between the UE and the first synchronization source may be that the UE is out of synchronization with the first synchronization source, or the UE may detect more synchronization than the first synchronization source.
  • Source at this time, the synchronization between the UE and the first synchronization source may also be considered invalid.
  • the UE detects the second synchronization source, the signal strength of the second synchronization source is greater than the third preset threshold, and the priority of the second synchronization source is higher than the priority of the first synchronization source, and the UE may consider The synchronization of the first synchronization source fails.
  • the UE detects the second synchronization source, the signal strength of the second synchronization source is greater than the third preset threshold, and the signal of the first synchronization source is less than the fourth threshold, and the priority of the second synchronization source is equal to or The priority of the first synchronization source is smaller than the priority of the first synchronization source, and the UE may consider that the synchronization with the first synchronization source is invalid.
  • the priority of the synchronization source may be pre-configured by the system or configured by the base station.
  • the base station sends system broadcast information to the UE on the first carrier frequency to configure, or the base station sends the radio to the UE on the first carrier frequency.
  • the resource controls RRC dedicated signaling to configure.
  • the UE determines a second synchronization source and a transmission resource.
  • step 104 may directly detect A more preferred synchronization source to is determined as the second synchronization source.
  • the transmission resource may be allocated according to the clock of the second synchronization source, where the transmission resource may be a base station configuration or a system pre-configured.
  • the second synchronization source and the corresponding transmission resource may be pre-configured. To, it can also be obtained by the base station through signaling configuration.
  • the signaling configuration of the base station may be that the UE receives the signaling configuration information sent by the base station on the first carrier frequency.
  • the UE may determine the second synchronization source required for transmitting the V2X data in the following manner: the UE acquires the second synchronization source configuration information that is sent by the access network device on the first carrier frequency, and the second synchronization source configuration information may be carried.
  • the identifier of the second synchronization source the UE may determine, according to the identifier of the second synchronization source, a second synchronization source required for transmitting the V2X data.
  • the second synchronization source configuration information may be configured by using the broadcast message to configure the second synchronization source configuration information, or the second synchronization source configuration information may be configured by sending the radio resource control RRC dedicated signaling.
  • the UE may further acquire second synchronization source configuration information that carries the identifier of the second synchronization source by using the pre-configuration information, and determine a second synchronization source required for transmitting the V2X data according to the identifier of the second synchronization source. Furthermore, the UE can also use the clock of the UE as the second synchronization source.
  • the clock of the UE may be a clock or timer that is currently maintained by the UE itself.
  • the UE may use the clock of the current base station as the clock of the UE, or may independently determine one clock as the clock of the UE.
  • the UE may determine the transmission resource required for transmitting the V2X data in the following manner: the UE acquires the resource pool configuration information, the UE determines the transmission resource pool according to the transmission resource pool configuration information, and determines the transmission resource according to the transmission resource pool.
  • the resource pool configuration information may be pre-configuration information, or may be configured by the access network device by using signaling.
  • the resource pool configuration information indicates an available transmission resource pool, for example, a receiving resource pool or a sending resource pool.
  • the UE may randomly select one resource pool from the available resource pool and select the resource pool from the resource pool. A resource is selected in the pool as a transmission resource to transmit data on the second carrier frequency, that is, corresponding data is received or transmitted.
  • the transmission resource in the embodiment of the present invention may also be a dynamic transmission resource or a semi-static transmission resource.
  • the UE may further determine, by using the following manner, the transmission resource required for transmitting the V2X data: the UE receives the resource scheduling information sent by the access network device, and determines the transmission resource according to the resource scheduling information, so that the UE may determine according to the second synchronization source.
  • the transmission resource transmits data on the second carrier frequency.
  • the resource scheduling information is used for dynamically scheduling resources or semi-static scheduling resources.
  • the semi-persistent scheduling resource in the embodiment of the present invention may be a resource number when the first scheduling is specified, and a change rule or a period of the resource number of each scheduling is specified, thereby implementing a semi-static resource scheduling by the number of fixed resources.
  • the dynamic scheduling resource in the embodiment of the present invention refers to dynamically scheduling a resource every time the resource is used.
  • the clock of the second synchronization source is used as the same The reference clock of the step is determined.
  • the UE uses the transmission resource to transmit data on the transmission carrier frequency (for example, the second carrier frequency) according to the second synchronization source determined in step 204, and the device X receives the data transmitted by the UE on the second carrier frequency.
  • the transmission carrier frequency for example, the second carrier frequency
  • the UE may transmit data on the transmission carrier frequency, and may refer to the UE transmitting data, and may also refer to the UE receiving data, and the corresponding transmission resource may be a sending resource or a receiving resource.
  • the UE transmits data on the second carrier frequency to perform data transmission between the UE and other devices (for example, device X).
  • the UE in the embodiment of the present invention may be an in-vehicle device, and the device X may be an in-vehicle device, a network, a roadside infrastructure, a pedestrian terminal, or the like.
  • the data transmitted between the UE and the device X may be V2X data.
  • the UE sends the indication information of the synchronization failure to the eNB, and the eNB receives the indication information of the synchronization failure sent by the UE.
  • Step 206 is an optional step.
  • the UE may feed back indication information to the eNB to indicate that the synchronization of the UE with the first synchronization source fails.
  • the UE feeds back the synchronization failure to the eNB, so that the eNB does not need to send signaling, configuration resources, and the like to the UE, thereby reducing the signaling pin.
  • the eNB may also send new synchronization source configuration information to the eNB, and may alternatively be the second synchronization source configuration information.
  • step 206 may be performed before the step 204 of re-determining the new second synchronization source, and may also be performed after the step 204, and may also be performed simultaneously with the step 204, which is not limited by the embodiment of the present invention.
  • the UE sends the identifier information of the second synchronization source to the eNB, where the eNB receives the identifier information of the second synchronization source sent by the UE.
  • Step 207 is an optional step.
  • the UE may further send the identifier information of the second synchronization source to the eNB, where the identifier information of the second synchronization source may carry the second synchronization source.
  • an identifier configured to instruct the UE to use a clock of the second synchronization source as a synchronization clock required to transmit data at the second carrier frequency.
  • the eNB may record related information of the synchronization source (ie, the second synchronization source) of the current UE in the eNB, so that the eNB acquires a new synchronization source, and uses the new synchronization.
  • the source clock acts as the synchronization clock for the configuration resource.
  • the data in the embodiment of the present invention may be V2X data.
  • the user equipment determines the synchronization source required for the transmission data according to the synchronization source information configured by the base station, and after the UE and the synchronization source are out of synchronization, re-determine the new synchronization source, and use the new source.
  • the synchronization source performs data transmission, so that the frequency of the transmission carrier frequency and the service carrier frequency are different, and the UE can still achieve normal data transmission after the original synchronization source is out of synchronization.
  • step 207 may be located at any time after the new second synchronization source is re-determined in step 204, for example, step 207 is performed before the data is transmitted in step 205, after the data is transmitted in step 205, or simultaneously with step 205, this embodiment of the present invention No restrictions.
  • FIG. 3 is a schematic interaction flowchart of a method for transmitting data according to another embodiment of the present invention.
  • the access network device in the embodiment of the present invention uses the eNB as an example, and the transmitted data takes V2X data as an example, and the information exchange between the UE and the eNB is taken as an example to describe the data transmission.
  • the eNB sends the first synchronization source configuration information to the user equipment UE by using the first carrier frequency, and the UE receives the first synchronization source configuration information sent by the eNB by using the first carrier frequency.
  • the first synchronization source configuration information may carry the identifier of the first synchronization source.
  • the eNB is deployed in the first carrier frequency, and the UE (for example, the eNB) receives the first synchronization source configuration information sent by the base station, and may synchronize with the first synchronization source according to the first synchronization source configuration information, and according to the first synchronization source,
  • the second carrier frequency is used for data transmission.
  • the UE sends indication information to the eNB on the first carrier frequency, and the eNB receives the indication information sent by the UE on the first carrier frequency.
  • the indication information is used to indicate that the synchronization failure of the UE with the first synchronization source. After the UE detects the synchronization failure with the first synchronization source, the indication information may be sent to the eNB.
  • the method for determining the synchronization failure by the UE is described with reference to the description in step 203 of FIG. 2. To avoid repetition, details are not described herein again.
  • the access network device in the embodiment of the present invention after configuring the synchronization source for the UE, may receive the indication information that the synchronization failure of the UE and the synchronization source is invalid after the UE and the synchronization source are invalid, so that after the UE and the synchronization source are invalid, The access network device may not send signaling to the UE according to the indication information to configure a resource corresponding to the first synchronization source for the UE, which can save signaling overhead.
  • the eNB may send the second synchronization source configuration information to the UE on the first carrier frequency, where the UE receives the second synchronization source configuration information sent by the eNB.
  • the second synchronization source configuration information is used by the UE to determine the second synchronization source according to the second synchronization source configuration information after the synchronization with the first synchronization source fails, and transmit the data on the second carrier frequency according to the second synchronization source, first The frequency of the carrier frequency is different from the frequency of the second carrier frequency.
  • Step 303 is an optional step.
  • the eNB may reconfigure the synchronization source for the UE, for example, send the second synchronization source configuration information to the UE on the first carrier frequency.
  • the second synchronization source configuration information may include an identifier of the second synchronization source, and after receiving the second synchronization source configuration information, the UE may synchronize with the second synchronization source according to the second synchronization source configuration information, and then according to the second synchronization source.
  • the data is continuously transmitted on the second carrier frequency to ensure normal data transmission.
  • the eNB may receive the identifier information of the second synchronization source sent by the UE, so that the base station acquires the new identifier.
  • the identifier of the synchronization source ie, the second synchronization source
  • Step 303 is an optional step.
  • the access network device (for example, the eNB) may further send the second synchronization source configuration information to the UE on the first carrier frequency, where the second synchronization source configuration information is used by the UE in the first synchronization source.
  • the second synchronization source is determined according to the second synchronization source configuration information, and the data is transmitted on the second carrier frequency according to the second synchronization source, and the frequency of the first carrier frequency and the frequency of the second carrier frequency are different. This ensures that after the synchronization of the UE with the first synchronization source fails, the access network device can know the new synchronization source (for example, the second synchronization source) to configure the transmission resource corresponding to the second synchronization source.
  • the new synchronization source for example, the second synchronization source
  • the access network device may send a transmission resource corresponding to the second synchronization source to the UE, and send the transmission resource to the UE, so that the UE transmits the transmission resource according to the second synchronization source.
  • the data can be such that the UE can still perform normal data transmission after the synchronization of the first synchronization source fails.
  • the data is an in-vehicle device communicating data with other devices V2X.
  • the apparatus 40 of FIG. 4 includes a receiving unit 41, a processing unit 42, and a transmission unit 43.
  • the receiving unit 41 is configured to receive first synchronization source configuration information by using a first carrier frequency, where the first synchronization source configuration information is used to determine the first synchronization source.
  • the processing unit 42 is configured to determine, according to the first synchronization source configuration information received by the receiving unit, the first synchronization source, to determine a synchronization failure with the first synchronization source, and determine the second synchronization source and the transmission resource.
  • the first synchronization source is used to provide a synchronous clock required to transmit data on the second carrier frequency, and the frequency of the first carrier frequency The frequency of the point and the second carrier frequency are different.
  • the transmitting unit 43 is configured to transmit data on the second carrier frequency according to the second synchronization source determined by the processing unit and using the transmission resource.
  • the user equipment determines the required synchronization source for transmitting data according to the synchronization source information configured by the base station, and after the UE and the synchronization source are out of synchronization, re-determines a new synchronization source, and uses the new synchronization source for data transmission.
  • the frequency of the transmission carrier frequency and the service carrier frequency can be different, and after the UE and the original synchronization source are out of synchronization, the normal transmission of data can still be realized.
  • the apparatus for transmitting data according to the embodiment of the present invention may correspond to specific steps and execution procedures of the UE in the method for transmitting data according to the embodiment of the present invention, and each unit/module in the apparatus and the other operations and/or functions described above are respectively The corresponding process of the UE in the method shown in FIG. 2 is implemented. For brevity, details are not described herein again.
  • the receiving unit may be a receiver
  • the processing unit may be a processor
  • the transmitting unit may be a transmitter.
  • the receiver, the processor, and the transmitter may be used to perform the methods performed by the receiving unit, the processing unit, and the transmitting unit, respectively. To avoid repetition, details are not described in detail.
  • FIG. 5 is a block diagram of an apparatus for transmitting data in accordance with another embodiment of the present invention.
  • the apparatus of FIG. 5 may perform the steps performed by the eNB in the method embodiments of FIGS. 2 and 3.
  • the apparatus 50 of FIG. 5 includes a transmitting unit 51 and a receiving unit 52.
  • the sending unit 51 is configured to send the first synchronization source configuration information to the user equipment UE by using the first carrier frequency.
  • the first synchronization source configuration information carries an identifier of the first synchronization source, and the first configuration information is used to determine the first synchronization source.
  • the receiving unit 52 is configured to receive the indication information sent by the UE.
  • the indication information is used to indicate synchronization failure of the UE with the first synchronization source, and the first synchronization source is configured to provide the UE with a synchronization clock for transmitting data on the second carrier frequency, a frequency of the first carrier frequency, and a frequency of the second carrier frequency. The point is different.
  • the access network device can receive the indication information that the synchronization failure of the UE and the synchronization source is invalid after the UE and the synchronization source are invalid.
  • the network access device may not send signaling to the UE according to the indication information to configure resources corresponding to the first synchronization source for the UE, which can save signaling overhead.
  • the sending unit 51 is further configured to send the second synchronization source configuration information to the UE on the first carrier frequency.
  • the second synchronization source configuration information is used by the UE to determine the second synchronization source according to the second synchronization source configuration information after the synchronization with the first synchronization source fails, and transmit the data on the second carrier frequency according to the second synchronization source.
  • the eNB may reconfigure the synchronization source for the UE.
  • the second synchronization source configuration information is sent to the UE on the first carrier frequency.
  • the second synchronization source configuration information may include an identifier of the second synchronization source, and after receiving the second synchronization source configuration information, the UE may synchronize with the second synchronization source according to the second synchronization source configuration information, and then according to the second synchronization source.
  • the data is continuously transmitted on the second carrier frequency to ensure normal data transmission.
  • the apparatus for transmitting data according to the embodiment of the present invention may correspond to the specific steps and execution flow of the eNB in the method for transmitting data according to the embodiment of the present invention, and the respective units/modules in the apparatus and the other operations and/or functions described above are respectively
  • the corresponding process of the eNB in the method shown in FIG. 3 is implemented. For brevity, details are not described herein again.
  • the receiving unit may be a receiver and the transmitting unit may be a transmitter.
  • the receiver and the transmitter can be used to perform the method performed by the receiving unit and the sending unit, respectively, and the details are not described in detail in order to avoid repetition.
  • FIG. 6 is a block diagram of an apparatus for transmitting data according to another embodiment of the present invention.
  • the apparatus 60 of FIG. 6 includes a transmitter 61, a receiver 62, and a processor 63.
  • Processor 63 controls the operation of device 60 and can be used to process signals.
  • the method disclosed in the foregoing embodiments of the present invention may be applied to the processor 63 or implemented by the processor 43.
  • each step of the above method may be completed by an integrated logic circuit of hardware in the processor 63 or an instruction in the form of software.
  • the processor 63 can be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can be implemented or executed in an embodiment of the invention.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the receiver 62 can receive the first synchronization source configuration information on the first carrier frequency.
  • the first synchronization source configuration information is used to determine the first synchronization source.
  • the processor 63 may determine the first synchronization source according to the first synchronization source configuration information, may also determine a synchronization failure with the first synchronization source, and determine the second synchronization source and the transmission resource.
  • the first synchronization source is used to provide the UE with a synchronization clock required for transmitting data on the second carrier frequency, and the frequency of the first carrier frequency and the frequency of the second carrier frequency are different.
  • the transmitter 61 can transmit data on the second carrier frequency using the transmission resource according to the second synchronization source.
  • the user equipment determines the transmission data according to the synchronization source information configured by the base station.
  • the required synchronization source after the UE and the synchronization source are out of step, re-determine the new synchronization source, and use the new synchronization source for data transmission, so that the frequency of the transmission carrier frequency and the service carrier frequency can be different, and the UE After the original synchronization source is out of step, the normal transmission of data can still be achieved.
  • the apparatus for transmitting data according to the embodiment of the present invention may correspond to specific steps and execution procedures of the UE in the method for transmitting data according to the embodiment of the present invention, and each unit/module in the apparatus and the other operations and/or functions described above are respectively The corresponding process of the UE in the method shown in FIG. 2 is implemented. For brevity, details are not described herein again.
  • FIG. 7 is a block diagram of an apparatus for transmitting data in accordance with another embodiment of the present invention.
  • the apparatus 70 of FIG. 7 includes a transmitter 71 and a receiver 72.
  • the transmitter 71 may send the first synchronization source configuration information to the user equipment UE by using the first carrier frequency, where the first synchronization source configuration information carries the identifier of the first synchronization source, and the first synchronization source configuration information is used to determine the first synchronization. source.
  • the receiver 72 may receive the indication information sent by the UE, where the indication information is used to indicate synchronization failure of the UE with the first synchronization source, where the first synchronization source is used to provide the UE with a synchronization clock required for transmitting data on the second carrier frequency,
  • the frequency of one carrier frequency is different from the frequency of the second carrier frequency.
  • the access network device in the embodiment of the present invention after configuring the synchronization source for the UE, may receive the indication information that the synchronization failure of the UE and the synchronization source is invalid after the UE and the synchronization source are invalid, so that after the UE and the synchronization source are invalid, The access network device may not send signaling to the UE according to the indication information to configure a resource corresponding to the first synchronization source for the UE, which can save signaling overhead.
  • the transmitter 71 may also send the second synchronization source configuration information to the UE on the first carrier frequency.
  • the second synchronization source configuration information is used by the UE to determine the second synchronization source according to the second synchronization source configuration information after the synchronization with the first synchronization source fails, and transmit the data on the second carrier frequency according to the second synchronization source.
  • the apparatus for transmitting data according to the embodiment of the present invention may correspond to the specific steps and execution flow of the eNB in the method for transmitting data according to the embodiment of the present invention, and the respective units/modules in the apparatus and the other operations and/or functions described above are respectively
  • the corresponding process of the eNB in the method shown in FIG. 3 is implemented. For brevity, details are not described herein again.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • 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, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in various embodiments of the present invention may be integrated in one processing unit
  • each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

本发明实施例提供了一种传输数据的方法和装置。该方法包括用户设备UE在第一载频上接收第一同步源配置信息,根据第一同步源配置信息确定第一同步源,确定与第一同步源的同步失效,并确定第二同步源和传输资源,根据第二同步源使用确定的传输资源在第二载频上传输数据,其中,第一同步源用于为UE提供在第二载频上传输数据所需的同步时钟,第一载频的频点和第二载频的频点不同。本发明实施例在用户设备与第一同步源失步后,仍然能够实现数据的正常传输。

Description

传输数据的方法和装置 技术领域
本发明实施例涉及无线通信领域,并且更具体地,涉及传输数据的方法和装置。
背景技术
目前,车载设备可以通过车载设备与车载设备(Vehicle to Vehicle,V2V)通信、车载设备与基础设施(Vehicle to Infrastructure,V2I)通信、车载设备与行人(Vehicle to Pedestrian,V2P)通信、车载设备与网络(Vehicle to Network,V2N)通信等及时获取路况信息或接收信息服务。以常见的V2V和V2I为例:车载设备通过V2V通信,可以将自身的车速、行驶方向、具体位置、是否踩了紧急刹车等信息广播给周围车载设备,这样驾驶员可以通过获取该类信息以便更好的感知视距外的交通状况,从而对危险状况作出提前预判进而做出避让。而对于V2I通信,除了上述安全信息的交互外,路边基础设施还可以为车载设备提供各类服务信息、数据网络的接入、不停车进行收费、车内娱乐等功能,进而可以提高交通智能化。这里,我们可以将上述通信方式统称为车载设备与其它设备(Vehicle-to-Everything,V2X)通信,V2X之间传输的数据称为V2X数据,将V2X通信所使用的网络称为车联网。
用户设备(User Equipment,UE)传输V2X所使用的传输载频和UE驻留的服务载频可以是不同的载频,即,传输载频和服务载频可以位于不同的频点。
当传输载频和服务载频位于不同的频点时,基站可以通过服务载频为UE传输V2X数据使用的传输载频配置同步源,UE可以根据同步源获得传输载频上的同步时钟,并进行数据传输。以基站为UE配置全球导航卫星系统(Global Navigation Satellite System,GNSS)作为V2X数据传输载频的同步源为例,基站为UE配置的资源都是参照同步源时钟(即GNSS时钟)配置的。UE可以根据具体GNSS时刻算出该时刻对应的帧号以及子帧号。基站为UE分配资源时,会参照GNSS时钟指明UE可以使用的传输资源的具体时频位置(如#1帧的第10号子帧的全部频域资源可以用于传输V2X数据)。当前GNSS时刻对应的帧号以及子帧号达到基站分配资源的时刻时, UE可以发送数据。
然而,UE有时可能会与同步源失步,即UE与同步源的同步失效,例如,当UE进入隧道或地库时,UE可能接收不到GNSS发送的信号。此时UE无法获取帧号和子帧号,造成UE无法确定基站分配的资源的有效时刻,无法正常传输数据。
发明内容
本发明实施例提供一种传输数据的方法和装置,能够在用户设备与同步源失步后,仍然能够实现数据的正常传输。
第一方面,提供了一种传输数据的方法,包括:用户设备UE在第一载频上接收第一同步源配置信息,所述第一同步源配置信息用于确定第一同步源;所述UE根据所述第一同步源配置信息确定第一同步源,所述第一同步源用于为所述UE提供在第二载频上传输数据所需的同步时钟,所述第一载频的频点和所述第二载频的频点不同;所述UE确定与所述第一同步源的同步失效;所述UE确定第二同步源和传输资源;所述UE根据所述第二同步源使用所述传输资源在所述第二载频上传输所述数据。
通过上述方案,用户设备根据基站配置的同步源信息确定传输数据的所需的同步源,在UE与该同步源失步后,重新确定新的同步源,并使用新的同步源进行数据传输,这样能够在传输载频和服务载频的频点不同,且UE与原有同步源失步后,仍可以实现数据的正常传输。
在一种可能的设计中,数据可以为设备到设备(Device-to-Device,D2D)数据、V2X数据以及其他通过直连通信方式传输的数据。特别地,本发明实施例中的数据为V2X数据,其中V2X数据为V2X业务相关数据。
在一种可能的设计中,UE可以一直处于基站的网络覆盖范围内。也就是,UE测得基站的信号质量满足接入要求,UE在连接态下可以正常与基站交互信令及数据,UE在空闲(IDLE)状态下可以正常接收基站发送的系统信息及寻呼信息。
在一种可能的设计中,所述方法还包括:所述UE确定与所述第一同步源的同步失效包括以下任一种:所述UE的同步计时器超过设定时间,所述UE仍未收到所述第一同步源的同步信号时,所述UE确定与所述第一同步源的同步失效;所述UE接收的所述第一同步源的同步信号的强度小于第一 预设门限值时,所述UE确定与所述第一同步源的同步失效;所述UE在指定时长T内接收到的所述第一同步源的同步信号的平均强度小于第二预设门限值时,所述UE确定与所述第一同步源的同步失效。
在一种可能的设计中,同步计时器开始计时的时刻可以为上一次收到同步信号的时刻。
在一种可能的设计中,所述UE确定与所述第一同步源的同步失效包括:所述UE检测到所述第二同步源,所述第二同步源的信号强度大于第三预设门限值,且所述第二同步源的优先级高于所述第一同步源的优先级时,所述UE确定与所述第一同步源的同步失效。
在一种可能的设计中,所述方法还包括:所述UE根据第一预配置信息确定所述第一同步源和所述第二同步源的优先级;或者,所述UE在所述第一载频上接收广播消息,根据所述广播消息确定所述第一同步源和所述第二同步源的优先级;或者,所述UE在所述第一载频上接收无线资源控制RRC专用信令,根据所述RRC专用信令确定所述第一同步源和所述第二同步源的优先级。
上述第一预配置信息、广播消息或RRC专用信令中包括同步源的优先级信息。
可选地,在一种可能的设计中,第一同步源配置信息包括同步源的优先级信息,根据第一同步源配置信息即可确定第一同步源和第二同步源的优先级。
在一种可能的设计中,所述UE确定传输所述数据所需的第二同步源和传输资源包括:所述UE通过预配置信息或通过在第一载频上接收的信令配置信息获取第二同步源配置信息,所述第二同步源配置信息携带所述第二同步源的标识,所述UE根据所述第二同步源的标识确定所述第二同步源;或者,所述UE将该UE的时钟作为所述第二同步源。
在一种可能的设计中,采用检测新的同步源来确定第一同步源失效时,UE根据所述第二同步源的标识确定所述第二同步源可以为UE根据标识对第二同步源进行检测,当检测得到第二同步源的信号强度大于一定值,且第二同步源的优先级高于第一同步源的优先级时,可以将第一同步源确定为失效,将第二同步源作为新的同步源。
在一种可能的设计中,所述UE确定第二同步源和传输资源包括:所述 UE获取资源池配置信息,所述资源池配置信息是预配置或根据在第一载频上接收的信令配置信息得到的;所述UE根据所述资源池配置信息确定传输资源池,并根据所述传输资源池确定所述传输资源。
在一种可能的设计中,所述UE确定第二同步源和传输资源包括:所述UE在所述第一载频上接收资源调度信息;所述UE根据所述资源调度信息确定所述传输资源,所述资源调度信息为动态调度信息或半静态调度信息。
在一种可能的设计中,所述方法还包括:在所述UE确定与所述第一同步源的同步失效之后,所述UE向所述接入网设备发送指示信息,所述指示信息用于指示所述UE与所述第一同步源的同步失效。
在一种可能的设计中,所述方法还包括:所述UE向所述接入网设备发送所述第二同步源的标识信息,其中,所述第二同步源的标识信息用于表明所述UE根据所述第二同步源的时钟在所述第二载频传输所述数据。
在一种可能的设计中,所述第一同步源的标识信息携带所述第一同步源的标识,其中,所述UE根据所述第一同步源配置信息确定第一同步源包括:所述UE根据所述第一同步源的标识信息确定所述第一同步源。
在一种可能的设计中,所述第一同步源为全球导航卫星系统GNSS。
本发明实施例对所使用的同步源不做具体限制。例如,本发明实施例中的同步源除了GNSS之外,还可以为与GNSS同步的移动终端、与GNSS同步的小区、为UE服务的当前小区、预先设置的小区等。
在一种可能的设计中,所述UE根据所述第二同步源使用所述传输资源在所述第二载频上传输所述数据包括:所述UE根据所述第二同步源在所述第二载频上采用直连通信的方式传输所述数据。
本发明实施例V2X数据的传输方式可以为直连通信方式,也可以是使用基站进行中转的通信方式。
在一种可能的设计中,所述数据为车载设备与其它设备V2X通信数据。
本发明实施例中的数据可以为车载设备与其它设备V2X通信数据,这样通过V2X数据传输使得驾驶员能够感知视距外的交通状况,能够对危险状态做出提前预判进而做出避让,可以减少交通事故的发生。
第二方面,提供了一种传输数据的方法,包括:接入网设备通过第一载频向用户设备UE发送第一同步源配置信息,所述第一同步源配置信息携带第一同步源的标识,所述第一同步源配置信息用于确定所述第一同步源;所 述接入网设备在第一载频上接收所述UE发送的指示信息,所述指示信息用于指示所述UE与所述第一同步源的同步失效,所述第一同步源用于为所述UE提供在第二载频上传输数据所需的同步时钟,所述第一载频的频点和所述第二载频的频点不同。
本发明实施例中的接入网设备通过为UE配置同步源,在UE与同步源失效后,可以接收UE发送的与该同步源的同步失效的指示信息,这样,在UE与同步源失效后,接入网设备可以根据指示信息不再向UE发送信令来为UE配置与第一同步源相对应的资源,能够节省信令开销。
在一种可能的设计中,所述方法还包括:所述接入网设备在所述第一载频上向所述UE发送第二同步源配置信息,以使得所述UE在与所述第一同步源的同步失效后,根据所述第二同步源配置信息确定第二同步源,并根据所述第二同步源在第二载频上传输数据。
在一种可能的设计中,接入网设备可以为UE发送配置与第二同步源相对应的传输资源,并向UE发送该传输资源,以使得UE根据第二同步源在该传输资源上传输数据,这样可以使得UE在第一同步源的同步失效后,仍然能够进行正常的数据传输。
在一种可能的设计中,所述数据为车载设备与其它设备V2X通信数据。
第三方面,提供了一种传输数据的装置,包括:接收单元,用于在第一载频接收第一同步源配置信息,所述第一同步源配置信息用于确定第一同步源;处理单元,用于根据所述接收单元接收的所述第一同步源配置信息确定第一同步源,所述第一同步源用于提供在第二载频上传输数据所需的同步时钟,所述第一载频的频点和所述第二载频的频点不同;所述处理单元,还用于确定与所述第一同步源的同步失效;所述处理单元,还用于确定第二同步源和传输资源;传输单元,用于根据所述处理单元确定的所述第二同步源并使用所述传输资源在所述第二载频上传输所述数据。
本发明实施例中,用户设备根据基站配置的同步源信息确定传输数据的所需的同步源,在UE与该同步源失步后,重新确定新的同步源,并使用新的同步源进行数据传输,这样能够在传输载频和服务载频的频点不同,且UE与原有同步源失步后,仍可以实现数据的正常传输。
在一种可能的设计中,所述处理单元具体用于通过下列任一种方式确定与所述第一同步源的同步失效:在所述UE的同步计时器超过设定时间,所 述UE仍未收到所述第一同步源的同步信号时,所述UE确定与所述第一同步源的同步失效;在所述UE接收的所述第一同步源的同步信号的强度小于第一预设门限值时,所述UE确定与所述第一同步源的同步失效;在所述UE在指定时长T内接收到的所述第一同步源的同步信号的平均强度小于第二预设门限值时,所述UE确定与所述第一同步源的同步失效。
在一种可能的设计中,所述处理单元用于在检测到所述第二同步源,所述第二同步源的信号强度大于第三预设门限值,且所述第二同步源的优先级高于所述第一同步源的优先级时,确定与所述第一同步源的同步失效。
在一种可能的设计中,所述处理单元还用于根据第一预配置信息确定所述第一同步源和所述第二同步源的优先级,或者,在所述第一载频上接收广播消息,根据所述广播消息确定所述第一同步源和所述第二同步源的优先级,或者,在所述第一载频上接收无线资源控制RRC专用信令,根据所述RRC专用信令确定所述第一同步源和所述第二同步源的优先级。
在一种可能的设计中,所述处理单元还用于通过预配置信息或通过在所述第一载频上接收的信令配置信息获取第二同步源配置信息,所述第二同步源配置信息携带所述第二同步源的标识,根据所述第二同步源的标识确定所述第二同步源,或者,所述方法由用户设备UE执行,将所述UE的时钟作为所述第二同步源。
在一种可能的设计中,所述处理单元具体用于获取资源池配置信息,所述资源池配置信息是预配置或通过在所述第一载频上接收的信令配置信息得到的,根据所述资源池配置信息确定传输资源池,并根据所述传输资源池确定所述传输资源。
在一种可能的设计中,所述处理单元具体用于在所述第一载频上接收资源调度信息,根据所述资源调度信息确定所述传输资源,所述资源调度信息为动态调度信息或半静态调度信息。
在一种可能的设计中,所述装置还包括:所述装置还包括发送单元,用于在所述UE确定与所述第一同步源的同步失效之后,向所述接入网设备发送指示信息,所述指示信息用于指示与所述第一同步源的同步失效。
在一种可能的设计中,所述装置为用户设备UE,所述装置还包括:所述装置为用户设备UE,所述发送单元还用于向所述接入网设备发送第二同步源的标识信息,其中,所述第二同步源的标识信息用于指示所述UE当前 的同步源。
在一种可能的设计中,所述第一同步源的标识信息携带所述第一同步源的标识,所述处理单元具体用于根据所述第一同步源的标识信息确定所述第一同步源。
在一种可能的设计中,所述第一同步源为全球导航卫星系统GNSS。
在一种可能的设计中,所述传输单元具体用于根据所述第二同步源在所述第二载频上采用直连通信的方式传输数据。
在一种可能的设计中,所述数据为车载设备与其它设备V2X通信数据。
根据本发明实施例第三方面的传输数据的装置可以对应于本发明方法实施例的第一方面中的传输数据的方法,并且,该装置中的各个单元/模块和上述其他操作和/或功能分别为了实现第一方面所示方法中的相应流程,为了简洁,在此不再赘述。
在一种可能的设计中,所述接收单元可以为接收器,接收器可以用于在第一载频接收第一同步源配置信息,所述第一同步源配置信息用于确定第一同步源。
接收器还可以执行上述第三方面可能的设计中接收单元所执行的步骤,为避免重复,在此不再一一赘述。
在一种可能的设计中,所述处理单元可以为处理器,处理器可以用于根据所述第一同步源配置信息确定第一同步源,还用于确定与所述第一同步源的同步失效,还用于确定第二同步源和传输资源。其中,所述第一同步源用于提供在第二载频上传输数据所需的同步时钟,所述第一载频的频点和所述第二载频的频点不同。
处理器可以执行上述第三方面可能的设计中处理单元所执行的步骤,为避免重复,在此不再一一赘述。
在一种可能的设计中,所述传输单元可以为发送器,用于根据所述第二同步源使用所述传输资源在所述第二载频上传输所述数据。
发送可以执行上述第三方面可能的设计中处理单元所执行的步骤,为避免重复,在此不再一一赘述。
在一种可能的设计中,所述传输单元可以为发射器,发射器可以用于根据所述处理单元确定的所述第二同步源并使用所述传输资源在所述第二载频上传输所述数据。
发射器可以执行上述第三方面可能的设计中传输单元和/或发送单元所执行的步骤,为避免重复,在此不再一一赘述。
第四方面,提供了一种传输数据的装置,包括:发送单元,用于通过第一载频向用户设备UE发送第一同步源配置信息,所述第一同步源配置信息携带第一同步源的标识,所述第一同步源配置信息用于确定所述第一同步源;接收单元,用于在第一载频上接收所述UE发送的指示信息,所述指示信息用于指示所述UE与所述第一同步源的同步失效,所述第一同步源用于为所述UE提供在第二载频上传输数据所需的同步时钟,所述第一载频的频点和所述第二载频的频点不同。
本发明实施例中的接入网设备通过为UE配置同步源,在UE与同步源失效后,可以接收UE发送的与该同步源的同步失效的指示信息,这样,在UE与同步源失效后,接入网设备可以根据指示信息不再向UE发送信令来为UE配置资源,能够节省信令开销。
在一种可能的设计中,所述发送单元还用于在所述第一载频上向所述UE发送第二同步源配置信息,所述第二同步源配置信息用于所述UE在与所述第一同步源的同步失效后,根据所述第二同步源配置信息确定第二同步源,并根据所述第二同步源在第二载频上传输数据。
根据本发明实施例第四方面的传输数据的装置可以对应于本发明方法实施例的第二方面中的传输数据的方法,并且,该装置中的各个单元/模块和上述其他操作和/或功能分别为了实现第二方面所示方法中的相应流程,为了简洁,在此不再赘述。
在一种可能的设计中,所述发送单元可以为发射器,所述发射器可以用于通过第一载频向用户设备UE发送第一同步源配置信息,所述第一同步源配置信息携带第一同步源的标识,所述第一同步源配置信息用于确定所述第一同步源。
在一种可能的设计中,所述接收单元可以为接收器,所述接收器可以用于在第一载频上接收指示信息,所述指示信息用于指示所述UE与所述第一同步源的同步失效,所述第一同步源用于为所述UE提供在第二载频上传输数据所需的同步时钟,所述第一载频的频点和所述第二载频的频点不同。
在一种可能的设计中,所述发射器还可以用于向所述UE发送第二同步源配置信息,所述第二同步源配置信息用于所述UE在与所述第一同步源的 同步失效后,根据所述第二同步源配置信息确定第二同步源,并根据所述第二同步源在第二载频上传输数据。
第五方面,本发明实施例提供了一种计算机存储介质,用于储存为上述接入网设备所用的计算机软件指令,其包含用于执行上述第二方面或第二方面可能的设计中所设计的程序。
通过上述方案,在UE与同步源失效后,接入网设备可以根据UE发送的与该同步源的同步失效的指示信息不再向UE发送信令来为UE配置与第一同步源相对应的资源,能够节省信令开销。
第六方面,本发明实施例提供了一种计算机存储介质,用于储存为上述UE所用的计算机软件指令,其包含用于执行上述第一方面或第一方面可能的设计中所设计的程序。
通过上述方案,用户设备根据基站配置的同步源信息确定传输数据的所需的同步源,在UE与该同步源失步后,重新确定新的同步源,并使用新的同步源进行数据传输,这样能够在传输载频和服务载频的频点不同,且UE与原有同步源失步后,仍可以实现数据的正常传输。
附图说明
为了更清楚地说明本发明实施例的技术方案,下面将对本发明实施例中所需要使用的附图作简单地介绍,显而易见地,下面所描述的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是可应用本发明实施例的通信系统的场景示意图。
图2是本发明一个实施例的传输数据的方法的示意性交互流程图。
图3是本发明另一实施例的传输数据的方法的示意性交互流程图。
图4是本发明一个实施例的传输数据的装置的框图。
图5是本发明另一实施例的传输数据的装置的框图。
图6是本发明一个实施例的传输数据的装置的框图。
图7是本发明另一实施例的传输数据的装置的框图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行 清楚、完整地描述,显然,所描述的实施例是本发明的一部分实施例,而不是全部实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例,都应属于本发明保护的范围。
应理解,本发明实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,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、通用分组无线数据(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)或全球互联微波接入(Worldwide Interoperability for Microwave Access,WiMAX)通信系统等。
基站可以是GSM或CDMA中的基站(Base Transceiver Station,BTS),也可以是WCDMA中的基站(NodeB,NB),还可以是LTE中的演进型基站(Evolved Node B,eNB或e-NodeB),本发明实施例对此不做限定。但为描述方便,下述实施例以基站或eNB为例进行说明。
用户设备(User Equipment,UE)可称之为终端(Terminal)、移动台(Mobile Station,MS)或移动终端(Mobile Terminal)等,该用户设备可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网进行通信,例如,用户设备可以是移动电话(或称为“蜂窝”电话)或具有移动终端的计算机等,例如,用户设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,它们与无线接入网交换语音和/或数据。特别地,本发明实施例中的用户设备可以指车载设备。
图1是可应用本发明实施例的通信系统的场景示意图。图1的通信系统中包括用户设备UE 11、设备X 12、接入网设备13和同步源14。
本发明实施例中的UE可以为车载设备,还可以为终端类的路边单元设备,手持终端,可穿戴设备等等。本发明实施例中的接入网设备可以为基站,还可以站点式路边单元等等。本发明实施例中的设备X可以为任意设备,例如,设备X可以为车载设备、网络、行人、路边基础设施等。
这里以UE是车载设备、接入网设备是基站为例进行说明。UE和设备X之间可以进行V2X数据传输,UE 11在基站13信号的覆盖下。V2X传输数 据的传输载频和UE驻留的基站部署的服务载频可以不同,换句话说,传输载频和服务载频的频点可以不同。
UE位于V2X数据传输载频上的同步源可以通过服务载频配置,例如,基站配置UE使用GNSS作为V2X数据传输载频的同步源,基站为UE配置资源时都参照同步源GNSS时钟进行配置。UE可以根据GNSS时刻算出该时刻对应的帧的编号和子帧编号。基站为UE分配资源时,会指明UE可以使用的传输资源的具体时频位置,例如,UE可以使用的传输资源的帧的编号以及子帧的编号。当GNSS时刻对应的帧的编号和子帧编号和基站已经指明的用于传输资源的帧的编号和子帧的编号相等时,UE可以发送数据。
但是,UE可能会与同步源失步,即UE与同步源的同步失效,例如,当UE进入隧道或地库时,UE可能接收不到GNSS发送的信号。此时UE无法获取帧编号和子帧编号,造成UE无法确定基站分配资源的有效时刻,无法正常传输数据。
针对服务载频和数据传输载频位于不同载频,当UE不再与基站分配的当前同步源同步时,如何保证UE正常传输V2X数据是本发明主要解决的技术问题。
图2是本发明一个实施例的传输数据的方法的示意性交互流程图。本发明实施例中以接入网设备为eNB、数据是V2X数据为例进行示例性说明,且方法流程中以UE和eNB,以及UE和设备X之间的信息交互为例对数据传输进行示例性说明。
201,eNB在第一载频向UE发送第一同步源配置信息,UE接收eNB在第一载频发送的第一同步源配置信息。
eNB向UE发送第一同步源配置信息,第一同步源配置信息可以用于为UE配置当前在第二载频上传输V2X数据所需的同步源。
在可选的实施例中,第一同步源配置信息携带第一同步源的标识,以使UE根据第一同步源标识确定当前传输V2X数据所需的同步源。本发明实施例中的第一同步源配置信息可以指示第一同步源为GNSS、与GNSS同步的移动终端或小区、当前为UE服务的小区、指定的小区、指定的移动终端同步源中的任意一个。优选地,第一同步源配置信息可以指示第一同步源为GNSS,相应的,第一同步源的标识为GNSS标识。
eNB部署于第一载频,V2X数据的传输位于第二载频。第一载频的频点 和第二载频的频点不同。例如,第一载频(UE的服务载频)的频点可以位于2GHz,而第二载频(UE传输V2X数据时的传输载频)的频点可以位于5.9GHz。服务载频可以为UE配置传输载频上的传输资源(如,动态传输资源、半静态传输资源、传输资源池、接收资源池)。配置信息还可以包括第二载频的频点信息,以使得第一UE可以在第二载频的频点上进行数据传输。可选的,第二载频上无基站部署。
在可选的实施例中,V2X数据的传输方式可以为两个设备之间直接进行通信的直连通信方式,也可以是使用基站进行中转的通信方式。优选地,V2X数据在第二载频上的传输方式为直连通信方式。
在可选的实施例中,eNB向UE发送配置信息可以通过无线资源控制(Radio Resource Control,RRC)的专用信令发送,也可以通过广播消息发送。
在可选的实施例中,UE可以一直处于eNB的网络覆盖范围内。UE测得基站的信号质量满足接入要求,UE在连接态下可以正常与基站交互信令及数据,UE在IDLE状态下可以正常接收基站发送的系统信息及寻呼信息。
202,UE确定第一同步源。
UE接收第一同步源配置信息,并根据第一同步源配置信息将第一同步源作为传输V2X数据的同步源。
当第一同步源配置信息中携带第一同步源的标识时,UE可以根据第一同步源的标识确定第一同步源。
在可选的实施方式中,UE还可以实现UE与第一同步源之间的同步。例如,当第一同步源为GNSS时,UE可以通过自身的GNSS接收机直接与GNSS系统同步,还可以通过搜索GNSS专用的直连链路同步信号将具备GNSS时钟的移动终端作为中间同步源,并与该中间同步源同步,进而实现与GNSS系统同步。
UE可以根据同步源在相应的资源上实现数据传输。例如,UE与第一同步源实现同步后,可以接收基站发送的资源分配信息。资源分配信息至少指示直连链路上可用的动态传输资源、半静态传输资源、发送资源池、接收资源池中的至少一种可用资源。这里的资源分配信息都是参照第一同步源的时钟配置的。UE根据接收到的资源分配信息使用相应的资源传输数据,具体地,可以使用发送资源发送相应的V2X数据,可以使用接收资源接收相应 的V2X数据。
203,UE确定与第一同步源之间的同步失效。
步骤202指出UE可以根据第一同步源在相应的资源上实现数据传输,但是,UE也可能与第一同步源发生失步,例如,UE进入隧道或者地库等情况下。
UE确定与第一同步源之间的同步失效的方法有很多种,本发明实施例对具体的确定方法不做限制。例如,UE中有同步计时器可以记录最近一次收到同步信号后的流逝时间,当UE的同步计时器超过设定时间,UE仍未收到第一同步源的同步信号时,可以第一认为UE与第一同步源的同步失效。再如,UE可以接收同步源的同步信号,当UE接收的第一同步源的同步信号强度小于第一预设门限值时,可以认为UE与第一同步源的同步失效。又如,UE在指定时长T内接收到的第一同步源的同步信号的平均强度小于第二预设门限值时,可以认为UE与第一同步源的同步失效。
在可选的实施例中,UE与第一同步源之间的同步失效可以为UE与第一同步源之间发生失步,也可以是UE检测到除第一同步源之外更优选的同步源,这时,也可以认为UE与第一同步源之间的同步失效。例如,UE检测到第二同步源,第二同步源的信号强度大于第三预设门限值,且第二同步源的优先级高于第一同步源的优先级,这时UE可以认为与第一同步源的同步失效。再例如,UE检测到第二同步源,第二同步源的信号强度大于第三预设门限值且第一同步源的信号小于第四门限值,且第二同步源的优先级等于或小于第一同步源的优先级,这时UE可以认为与第一同步源的同步失效。
同步源的优先级可以是系统预先配置的,也可以是基站配置的,例如,基站在第一载频上向UE发送系统广播信息来配置,或者,基站在第一载频上向UE发送无线资源控制RRC专用信令来配置。
204,UE确定第二同步源和传输资源。
在可选的实施例中,当步骤103中通过UE检测到除第一同步源之外更优选的同步源,进而确定UE与第一同步源之间的同步失效时,步骤104可以直接将检测到的更优选的同步源确定为第二同步源。另外,还可以根据第二同步源的时钟分配传输资源,这里的传输资源,可以是基站配置,也可以是系统预先配置的。
在可选的实施例中,第二同步源和相应的传输资源可以通过预配置得 到,也可以是基站通过信令配置得到。基站的信令配置可以是UE在第一载频上接收基站发送的信令配置信息。
具体地,UE可以通过下列方式确定传输V2X数据所需的第二同步源:UE获取接入网设备在第一载频上发送的第二同步源配置信息,第二同步源配置信息中可以携带第二同步源的标识,UE可以根据第二同步源的标识确定传输V2X数据所需的第二同步源。接入网设备向UE发送第二同步源配置信息可以是通过广播消息来配置第二同步源配置信息,也可以是通过发送无线资源控制RRC专用信令来配置第二同步源配置信息。另外,UE还可以通过预配置信息获取携带第二同步源的标识的第二同步源配置信息,并根据第二同步源的标识确定传输V2X数据所需的第二同步源。再者,UE还可以将UE的时钟作为第二同步源。
在可选的实施例中,UE的时钟可以是UE当前内部自主维护的时钟或计时器。在可选的实施例中,UE可以将当前基站的时钟作为UE的时钟,也可以自主确定一个时钟作为UE的时钟。
UE可以通过下列方式确定传输V2X数据所需的传输资源:UE获取资源池配置信息,UE根据传输资源池配置信息确定传输资源池,并根据传输资源池确定传输资源。其中,资源池配置信息可以是预配置信息,还可以是接入网设备通过信令配置的。资源池配置信息中指示可用的传输资源池,例如,接收资源池或发送资源池,在可选的实施例中,UE可以从可用的资源池中随机选择一个资源池,并从选择的该资源池中选择一个资源作为传输资源在第二载频上传输数据,即进行相应的数据接收或发送。
另外,本发明实施例中的传输资源还可以为动态传输资源,或半静态传输资源。具体地,UE还可以通过下列方式确定传输V2X数据所需的传输资源:UE接收接入网设备发送的资源调度信息,并根据资源调度信息确定传输资源,使得UE可以根据第二同步源利用确定的传输资源在第二载频上传输数据。这里,资源调度信息用于动态调度资源或半静态调度资源。本发明实施例中的半静态调度资源可以是指定第一次调度时的资源编号,并且指定每次调度的资源编号的变化规律或周期,从而实现间隔固定资源数进行半静态的资源调度。本发明实施例中的动态调度资源指的是每次使用资源时都动态调度一次资源。
在可选的实施例中,UE确定传输资源时是以第二同步源的时钟作为同 步的参考时钟确定的。
205,UE根据步骤204确定的第二同步源使用传输资源在传输载频(例如第二载频)上传输数据,设备X在第二载频上接收UE传输的数据。
本发明实施例中UE在传输载频上传输数据可以指UE发送数据,也可以指UE接收数据,相应的传输资源可以为发送资源或接收资源。
这里UE在第二载频上传输数据是UE与其它设备(例如设备X)之间进行数据传输。本发明实施例中的UE可以为车载设备,设备X可以为车载设备、网络、路边基础设施、行人的手持终端等,UE和设备X之间传输的数据可以为V2X数据。
206,UE向eNB发送同步失效的指示信息,eNB接收UE发送的同步失效的指示信息。
步骤206为可选择的步骤。在可选的实施例中,UE在步骤203确定第一同步源失效后,可以向eNB反馈指示信息,用于指示UE与第一同步源的同步失效。UE向eNB反馈同步失效,这样eNB可以不需要再向UE发送信令、配置资源等,进而可以减小开信令销。当然,eNB也可以向eNB发送新的同步源配置信息,可选地,可以是第二同步源配置信息。
应理解,步骤206可以位于步骤204重新确定新的第二同步源之前,也可以位于步骤204之后,还可以和步骤204同时进行,本发明实施例对此不做限制。
207,UE向eNB发送第二同步源的标识信息,eNB接收UE发送的第二同步源的标识信息。
步骤207为可选择的步骤。在可选的实施例中,UE在步骤204重新确定新的第二同步源后,还可以向eNB发送第二同步源的标识信息,该第二同步源的标识信息可以携带第二同步源的标识,用于指示UE使用第二同步源的时钟作为在第二载频传输数据所需的同步时钟。这样,eNB收到第二同步源的标识信息后,可以将当前UE的同步源(即第二同步源)的相关信息记录在eNB中,以使得eNB获取新的同步源,并使用新的同步源的时钟作为配置资源的同步时钟。
特别地,本发明实施例中的数据可以为V2X数据。
本发明实施例中,用户设备根据基站配置的同步源信息确定传输数据的所需的同步源,在UE与该同步源失步后,重新确定新的同步源,并使用新 的同步源进行数据传输,这样能够在传输载频和服务载频的频点不同,且UE与原有同步源失步后,仍可以实现数据的正常传输。
应理解,流程中各步骤的序号并不构成对各步骤执行的时间先后顺序的约束或限定。例如,步骤207可以位于步骤204重新确定新的第二同步源之后的任一时刻,例如步骤207位于步骤205传输数据之前、步骤205传输数据之后或与步骤205同时执行,本发明实施例对此不做限制。
上述实施例只是为了帮助本领域技术人员更好地理解本发明,而非限制本发明的保护范围。
图3是本发明另一实施例的传输数据的方法的示意性交互流程图。本发明实施例中的接入网设备以eNB为例、传输的数据以V2X数据为例,对UE和eNB之间的信息交互为例对数据传输进行示例性说明。
301,eNB通过第一载频向用户设备UE发送第一同步源配置信息,UE通过第一载频接收eNB发送的第一同步源配置信息。
第一同步源配置信息可以携带第一同步源的标识。eNB部署在第一载频,UE(例如eNB)接收基站发送的第一同步源配置信息,可以根据第一同步源配置信息实现与第一同步源之间的同步,并根据第一同步源在第二载频进行数据传输。
302,UE在第一载频上向eNB发送指示信息,eNB在第一载频上接收UE发送的指示信息。
指示信息用于指示UE与第一同步源的同步失效。在UE检测到与第一同步源的同步失效之后,可以向eNB发送指示信息。UE确定同步失效的方法参照图2步骤203中的描述,为避免重复,在此不再一一赘述。
本发明实施例中的接入网设备通过为UE配置同步源,在UE与同步源失效后,可以接收UE发送的与该同步源的同步失效的指示信息,这样,在UE与同步源失效后,接入网设备可以根据指示信息不再向UE发送信令来为UE配置与第一同步源相对应的资源,能够节省信令开销。
303,eNB可以在第一载频上向UE发送第二同步源配置信息,UE在第一载频上接收eNB发送的第二同步源配置信息。
第二同步源配置信息用于UE在与第一同步源的同步失效后,根据第二同步源配置信息确定第二同步源,并根据第二同步源在第二载频上传输数据,第一载频的频点和第二载频的频点不同。
步骤303为可选的步骤。eNB收到同步失效的指示信息后,可以为UE重新配置同步源,例如,在第一载频上向UE发送第二同步源配置信息。第二同步源配置信息可以包括第二同步源的标识,UE收到第二同步源配置信息后,可以根据第二同步源配置信息实现与第二同步源的同步,进而根据第二同步源在第二载频上继续传输数据,保证数据传输的正常进行。
在可选的实施例中,如果第二同步源为预配置的,那么在UE与第二同步源实现同步之后,eNB可以接收UE发送的第二同步源的标识信息,以使基站获取新的同步源(即第二同步源)的标识,以便为第二同步源配置与之相应的传输资源。
步骤303为可选的步骤。在可选的实施例中,接入网设备(例如,eNB)还可以在第一载频上向UE发送第二同步源配置信息,第二同步源配置信息用于UE在与第一同步源的同步失效后,根据第二同步源配置信息确定第二同步源,并根据第二同步源在第二载频上传输数据,第一载频的频点和第二载频的频点不同。这样可以保证在UE与第一同步源的同步失效后,接入网设备可以知道新的同步源(例如,第二同步源),以便为第二同步源配置与之相应的传输资源。
在可选的实施例中,接入网设备可以为UE发送配置与第二同步源相对应的传输资源,并向UE发送该传输资源,以使得UE根据第二同步源在该传输资源上传输数据,这样可以使得UE在第一同步源的同步失效后,仍然能够进行正常的数据传输。
在可选的实施例中,所述数据为车载设备与其它设备V2X通信数据。
上文中结合图2和图3,详细描述了根据本发明实施例的传输数据的方法,下面将结合图4到图7描述根据本发明实施例的传输数据的装置的框图。
图4是本发明一个实施例的传输数据的装置的框图。图4的装置可执行图2方法实施例中UE所执行的步骤。图4的装置40包括接收单元41、处理单元42和传输单元43。
接收单元41用于通过第一载频接收第一同步源配置信息,第一同步源配置信息用于确定第一同步源。
处理单元42用于根据接收单元接收的第一同步源配置信息确定在第一同步源,用于确定与第一同步源的同步失效,并确定第二同步源和传输资源。第一同步源用于提供在第二载频上传输数据所需的同步时钟,第一载频的频 点和第二载频的频点不同。
传输单元43用于根据处理单元确定的第二同步源并使用传输资源在第二载频上传输数据。
通过上述方案,用户设备根据基站配置的同步源信息确定传输数据的所需的同步源,在UE与该同步源失步后,重新确定新的同步源,并使用新的同步源进行数据传输,这样能够在传输载频和服务载频的频点不同,且UE与原有同步源失步后,仍可以实现数据的正常传输。
根据本发明实施例的传输数据的装置可对应于本发明实施例的传输数据方法中UE的具体步骤和执行流程,并且,该装置中的各个单元/模块和上述其他操作和/或功能分别为了实现图2所示方法中UE的相应流程,为了简洁,在此不再赘述。
在可选的实施例中,接收单元可以为接收器,处理单元可以为处理器,传输单元可以为发射器。接收器、处理器、发射器可以分别用于执行上述接收单元、处理单元、传输单元所执行的方法,为避免重复,不再详细赘述。
图5是本发明另一实施例的传输数据的装置的框图。图5的装置可执行图2和图3方法实施例中eNB所执行的步骤。图5的装置50包括发送单元51和接收单元52。
发送单元51用于通过第一载频向用户设备UE发送第一同步源配置信息。第一同步源配置信息携带第一同步源的标识,第一配置信息用于确定第一同步源。
接收单元52用于接收UE发送的指示信息。指示信息用于指示UE与第一同步源的同步失效,第一同步源用于为UE提供在第二载频上传输数据的同步时钟,第一载频的频点和第二载频的频点不同。
通过上述方案,接入网设备通过为UE配置同步源,在UE与同步源失效后,可以接收UE发送的与该同步源的同步失效的指示信息,这样,在UE与同步源失效后,接入网设备可以根据指示信息不再向UE发送信令来为UE配置与第一同步源相对应的资源,能够节省信令开销。
在可选的实施例中,发送单元51还用于在第一载频上向UE发送第二同步源配置信息。第二同步源配置信息用于UE在与第一同步源的同步失效后,根据第二同步源配置信息确定第二同步源,并根据第二同步源在第二载频上传输数据。
在可选的实施例中,eNB收到同步失效的指示信息后,可以为UE重新配置同步源。例如,在第一载频上向UE发送第二同步源配置信息。第二同步源配置信息可以包括第二同步源的标识,UE收到第二同步源配置信息后,可以根据第二同步源配置信息实现与第二同步源的同步,进而根据第二同步源在第二载频上继续传输数据,保证数据传输的正常进行。
根据本发明实施例的传输数据的装置可对应于本发明实施例的传输数据方法中eNB的具体步骤和执行流程,并且,该装置中的各个单元/模块和上述其他操作和/或功能分别为了实现图3所示方法中eNB的相应流程,为了简洁,在此不再赘述。
在可选的实施例中,接收单元可以为接收器,发送单元可以为发射器。接收器、发射器可以分别用于执行上述接收单元、发送单元所执行的方法,为避免重复,不再详细赘述。
图6是本发明另一实施例的传输数据的装置的框图。图6的装置60包括发射机61、接收机62、处理器63。处理器63控制装置60的操作,并可用于处理信号。
上述本发明实施例揭示的方法可以应用于处理器63中,或者由处理器43实现。在实现过程中,上述方法的各步骤可以通过处理器63中的硬件的集成逻辑电路或者软件形式的指令完成。处理器63可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列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发明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任何常规的处理器等。结合本发明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。
具体地,接收机62可以在第一载频上接收第一同步源配置信息。第一同步源配置信息用于确定第一同步源。
处理器63可以根据第一同步源配置信息确定第一同步源,还可以确定与第一同步源的同步失效,并确定第二同步源和传输资源。其中,第一同步源用于为UE提供在第二载频上传输数据所需的同步时钟,第一载频的频点和第二载频的频点不同。
发射机61可以根据第二同步源使用传输资源在第二载频上传输数据。
本发明实施例中,用户设备根据基站配置的同步源信息确定传输数据的 所需的同步源,在UE与该同步源失步后,重新确定新的同步源,并使用新的同步源进行数据传输,这样能够在传输载频和服务载频的频点不同,且UE与原有同步源失步后,仍可以实现数据的正常传输。
根据本发明实施例的传输数据的装置可对应于本发明实施例的传输数据方法中UE的具体步骤和执行流程,并且,该装置中的各个单元/模块和上述其他操作和/或功能分别为了实现图2所示方法中UE的相应流程,为了简洁,在此不再赘述。
图7是本发明另一实施例的传输数据的装置的框图。图7的装置70包括发射机71和接收机72。
具体地,发射机71可以通过第一载频向用户设备UE发送第一同步源配置信息,第一同步源配置信息携带第一同步源的标识,第一同步源配置信息用于确定第一同步源。
接收机72可以接收UE发送的指示信息,指示信息用于指示UE与第一同步源的同步失效,第一同步源用于为UE提供在第二载频上传输数据所需的同步时钟,第一载频的频点和第二载频的频点不同。
本发明实施例中的接入网设备通过为UE配置同步源,在UE与同步源失效后,可以接收UE发送的与该同步源的同步失效的指示信息,这样,在UE与同步源失效后,接入网设备可以根据指示信息不再向UE发送信令来为UE配置与第一同步源相对应的资源,能够节省信令开销。
在可选的实施例中,发射机71还可以在第一载频上向UE发送第二同步源配置信息。第二同步源配置信息用于UE在与第一同步源的同步失效后,根据第二同步源配置信息确定第二同步源,并根据第二同步源在第二载频上传输数据。
根据本发明实施例的传输数据的装置可对应于本发明实施例的传输数据方法中eNB的具体步骤和执行流程,并且,该装置中的各个单元/模块和上述其他操作和/或功能分别为了实现图3所示方法中eNB的相应流程,为了简洁,在此不再赘述。
应理解,说明书通篇中提到的“一个实施例”或“一实施例”意味着与实施例有关的特定特征、结构或特性包括在本发明的至少一个实施例中。因此,在整个说明书各处出现的“在一个实施例中”或“在一实施例中”未必一定指相同的实施例。此外,这些特定的特征、结构或特性可以任意适合的 方式结合在一个或多个实施例中。
应理解,在本发明的各种实施例中,上述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,而不应对本发明实施例的实施过程构成任何限定。
应理解,在本发明实施例中,“与A相应的B”表示B与A相关联,根据A可以确定B。但还应理解,根据A确定B并不意味着仅仅根据A确定B,还可以根据A和/或其它信息确定B。
应理解,本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
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发明的范围。
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,在本发明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。
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,本发明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)执行本发明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,仅为本发明的具体实施方式,但本发明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发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。

Claims (30)

  1. 一种传输数据的方法,其特征在于,包括:
    用户设备UE在第一载频上接收第一同步源配置信息,所述第一同步源配置信息用于确定第一同步源;
    所述UE根据所述第一同步源配置信息确定第一同步源,所述第一同步源用于为所述UE提供在第二载频上传输数据所需的同步时钟,所述第一载频的频点和所述第二载频的频点不同;
    所述UE确定与所述第一同步源的同步失效;
    所述UE确定第二同步源和传输资源;
    所述UE根据所述第二同步源使用所述传输资源在所述第二载频上传输所述数据。
  2. 如权利要求1所述的方法,其特征在于,所述UE确定与所述第一同步源的同步失效包括以下任一种:
    所述UE的同步计时器超过设定时间,所述UE仍未收到所述第一同步源的同步信号时,所述UE确定与所述第一同步源的同步失效;
    所述UE接收的所述第一同步源的同步信号的强度小于第一预设门限值时,所述UE确定与所述第一同步源的同步失效;
    所述UE在指定时长T内接收到的所述第一同步源的同步信号的平均强度小于第二预设门限值时,所述UE确定与所述第一同步源的同步失效。
  3. 如权利要求1所述的方法,其特征在于,所述UE确定与所述第一同步源的同步失效包括:
    所述UE检测到所述第二同步源,所述第二同步源的信号强度大于第三预设门限值,且所述第二同步源的优先级高于所述第一同步源的优先级时,所述UE确定与所述第一同步源的同步失效。
  4. 如权利要求3所述的方法,其特征在于,所述方法还包括:
    所述UE根据第一预配置信息确定所述第一同步源和所述第二同步源的优先级;或者,
    所述UE在所述第一载频上接收广播消息,根据所述广播消息确定所述第一同步源和所述第二同步源的优先级;或者,
    所述UE在所述第一载频上接收无线资源控制RRC专用信令,根据所述RRC专用信令确定所述第一同步源和所述第二同步源的优先级。
  5. 如权利要求1-4中任一项所述的方法,其特征在于,所述UE确定第二同步源和传输资源包括:
    所述UE通过预配置信息或通过在所述第一载频上接收的信令配置信息获取第二同步源配置信息,所述第二同步源配置信息携带所述第二同步源的标识,所述UE根据所述第二同步源的标识确定所述第二同步源;或者,
    所述UE将所述UE的时钟作为所述第二同步源。
  6. 如权利要求1-5中任一项所述的方法,其特征在于,所述UE确定第二同步源和传输资源包括:
    所述UE获取资源池配置信息,所述资源池配置信息是预配置或根据在所述第一载频上接收的信令配置信息得到的;
    所述UE根据所述资源池配置信息确定传输资源池,并根据所述传输资源池确定所述传输资源。
  7. 如权利要求1-5中任一项所述的方法,其特征在于,所述UE确定第二同步源和传输资源包括:
    所述UE在所述第一载频上接收资源调度信息;
    所述UE根据所述资源调度信息确定所述传输资源,所述资源调度信息为动态调度信息或半静态调度信息。
  8. 如权利要求1-7中任一项所述的方法,其特征在于,所述方法还包括:
    在所述UE确定与所述第一同步源的同步失效之后,所述UE在所述第一载频上向接入网设备发送指示信息,所述指示信息用于指示所述UE与所述第一同步源的同步失效。
  9. 如权利要求1-8中任一项所述的方法,其特征在于,所述方法还包括:
    所述UE在所述第一载频上向所述接入网设备发送所述第二同步源的标识信息,其中,所述第二同步源的标识信息用于指示所述UE当前的同步源。
  10. 如权利要求1-9中任一项所述的方法,其特征在于,所述第一同步源的标识信息携带所述第一同步源的标识,其中,所述UE根据所述第一同步源配置信息确定第一同步源包括:
    所述UE根据所述第一同步源的标识信息确定所述第一同步源。
  11. 如权利要求1-10中任一项所述的方法,其特征在于,所述第一同步 源为全球导航卫星系统GNSS。
  12. 如权利要求1-11中任一项所述的方法,其特征在于,所述UE根据所述第二同步源使用所述传输资源在所述第二载频上传输所述数据包括:
    所述UE根据所述第二同步源在所述第二载频上采用直连通信的方式传输所述数据。
  13. 如权利要求1-12中任一项所述的方法,其特征在于,所述数据为车载设备与其它设备V2X通信数据。
  14. 一种传输数据的方法,其特征在于,包括:
    接入网设备通过第一载频向用户设备UE发送第一同步源配置信息,所述第一同步源配置信息携带第一同步源的标识,所述第一同步源配置信息用于确定所述第一同步源;
    所述接入网设备在第一载频上接收所述UE发送的指示信息,所述指示信息用于指示所述UE与所述第一同步源的同步失效,所述第一同步源用于为所述UE提供在第二载频上传输数据所需的同步时钟,所述第一载频的频点和所述第二载频的频点不同。
  15. 如权利要求14所述的方法,其特征在于,所述方法还包括:
    所述接入网设备在所述第一载频上向所述UE发送第二同步源配置信息,所述第二同步源配置信息用于所述UE在与所述第一同步源的同步失效后,根据所述第二同步源配置信息确定第二同步源,并根据所述第二同步源在第二载频上传输数据。
  16. 一种传输数据的装置,其特征在于,包括:
    接收单元,用于在第一载频接收第一同步源配置信息,所述第一同步源配置信息用于确定第一同步源;
    处理单元,用于根据所述接收单元接收的所述第一同步源配置信息确定第一同步源,所述第一同步源用于提供在第二载频上传输数据所需的同步时钟,所述第一载频的频点和所述第二载频的频点不同;
    所述处理单元,还用于确定与所述第一同步源的同步失效;
    所述处理单元,还用于确定第二同步源和传输资源;
    传输单元,用于根据所述处理单元确定的所述第二同步源并使用所述传输资源在所述第二载频上传输所述数据。
  17. 如权利要求16所述的装置,其特征在于,所述处理单元具体用于 通过下列任一种方式确定与所述第一同步源的同步失效:在同步计时器超过设定时间,仍未收到所述第一同步源的同步信号时,确定与所述第一同步源的同步失效;在接收的所述第一同步源的同步信号的强度小于第一预设门限值时,确定与所述第一同步源的同步失效;在指定时长T内接收到的所述第一同步源的同步信号的平均强度小于第二预设门限值时,确定与所述第一同步源的同步失效。
  18. 如权利要求16所述的装置,其特征在于,所述处理单元用于在检测到所述第二同步源,所述第二同步源的信号强度大于第三预设门限值,且所述第二同步源的优先级高于所述第一同步源的优先级时,确定与所述第一同步源的同步失效。
  19. 如权利要求18所述的装置,其特征在于,所述处理单元还用于根据第一预配置信息确定所述第一同步源和所述第二同步源的优先级,或者,在所述第一载频上接收广播消息,根据所述广播消息确定所述第一同步源和所述第二同步源的优先级,或者,在所述第一载频上接收无线资源控制RRC专用信令,根据所述RRC专用信令确定所述第一同步源和所述第二同步源的优先级。
  20. 如权利要求16-19中任一项所述的装置,其特征在于,所述处理单元还用于通过预配置信息或通过在所述第一载频上接收的信令配置信息获取第二同步源配置信息,所述第二同步源配置信息携带所述第二同步源的标识,根据所述第二同步源的标识确定所述第二同步源,或者,所述方法由用户设备UE执行,将所述UE的时钟作为所述第二同步源。
  21. 如权利要求16-20中任一项所述的装置,其特征在于,所述处理单元具体用于获取资源池配置信息,所述资源池配置信息是预配置或在所述第一载频上接收的信令配置信息得到的,根据所述资源池配置信息确定传输资源池,并根据所述传输资源池确定所述传输资源。
  22. 如权利要求16-20中任一项所述的装置,其特征在于,所述处理单元具体用于在所述第一载频上接收资源调度信息,根据所述资源调度信息确定所述传输资源,所述资源调度信息为动态调度信息或半静态调度信息。
  23. 如权利要求16-22中任一项所述的装置,其特征在于,所述装置还包括:
    发送单元,用于在确定与所述第一同步源的同步失效之后,向所述接入 网设备发送指示信息,所述指示信息用于指示与所述第一同步源的同步失效。
  24. 如权利要求16-23中任一项所述的装置,其特征在于,所述装置为用户设备UE,所述发送单元还用于向所述接入网设备发送第二同步源的标识信息,其中,所述第二同步源的标识信息用于指示所述UE当前的同步源。
  25. 如权利要求16-24中任一项所述的装置,其特征在于,所述第一同步源的标识信息携带所述第一同步源的标识,所述处理单元具体用于根据所述第一同步源的标识信息确定所述第一同步源。
  26. 如权利要求16-25中任一项所述的装置,其特征在于,所述第一同步源为全球导航卫星系统GNSS。
  27. 如权利要求16-26中任一项所述的装置,其特征在于,所述传输单元具体用于根据所述第二同步源在所述第二载频上采用直连通信的方式传输数据。
  28. 如权利要求16-27中任一项所述的装置,其特征在于,所述数据为车载设备与其它设备V2X通信数据。
  29. 一种传输数据的装置,其特征在于,包括:
    发送单元,用于通过第一载频向用户设备UE发送第一同步源配置信息,所述第一同步源配置信息携带第一同步源的标识,所述第一同步源配置信息用于确定所述第一同步源;
    接收单元,用于在第一载频上接收所述UE发送的指示信息,所述指示信息用于指示所述UE与所述第一同步源的同步失效,所述第一同步源用于为所述UE提供在第二载频上传输数据所需的同步时钟,所述第一载频的频点和所述第二载频的频点不同。
  30. 如权利要求29所述的装置,其特征在于,所述装置还包括:
    所述发送单元还用于在所述第一载频上向所述UE发送第二同步源配置信息,所述第二同步源配置信息用于所述UE在与所述第一同步源的同步失效后,根据所述第二同步源配置信息确定第二同步源,并根据所述第二同步源在第二载频上传输数据。
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