WO2013044718A1 - 一种实现设备到设备的通讯方法、终端及系统 - Google Patents

一种实现设备到设备的通讯方法、终端及系统 Download PDF

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Publication number
WO2013044718A1
WO2013044718A1 PCT/CN2012/080812 CN2012080812W WO2013044718A1 WO 2013044718 A1 WO2013044718 A1 WO 2013044718A1 CN 2012080812 W CN2012080812 W CN 2012080812W WO 2013044718 A1 WO2013044718 A1 WO 2013044718A1
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WO
WIPO (PCT)
Prior art keywords
terminal
transmission
communication
information
wireless network
Prior art date
Application number
PCT/CN2012/080812
Other languages
English (en)
French (fr)
Inventor
曾清海
郭轶
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 JP2014532229A priority Critical patent/JP6009571B2/ja
Priority to EP12835658.1A priority patent/EP2741563A4/en
Publication of WO2013044718A1 publication Critical patent/WO2013044718A1/zh
Priority to US14/226,181 priority patent/US9629192B2/en
Priority to US15/467,499 priority patent/US20170196038A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/0278Traffic management, e.g. flow control or congestion control using buffer status reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support

Definitions

  • the present invention relates to the field of communications, and in particular, to a device-to-device communication method, terminal, and system. Background technique
  • the device-to-device (English name: device to device, hereinafter referred to as D2D) technology is a communication technology that directly exchanges data between devices and devices under the control of a mobile network.
  • D2D technology under long-term evolution English term: long term evolution, hereinafter referred to as LTE
  • LTE long term evolution
  • an embodiment of the present invention provides a device-to-device communication method, including:
  • the device-to-device communication is performed according to the descrambled transmission authorization information.
  • an embodiment of the present invention further provides a terminal, including:
  • an obtaining module configured to acquire a wireless network temporary identifier used for device-to-device communication and transmission authorization information scrambled by the wireless network temporary identifier used for device-to-device communication;
  • a processing module configured to perform the device-to-device communication according to the descrambled transmission authorization information.
  • the embodiment of the present invention further provides a communication system, including a first terminal, a second terminal, and a base station, where the first terminal and the second terminal are respectively used to acquire, used by the base station, a wireless network temporary identifier for device-to-device communication, receiving transmission authorization information sent by the base station and scrambled by the wireless network temporary identifier used for device-to-device communication, and Device-to-device communication is performed according to the descrambled transmission authorization information.
  • a communication system including a first terminal, a second terminal, and a base station, where the first terminal and the second terminal are respectively used to acquire, used by the base station, a wireless network temporary identifier for device-to-device communication, receiving transmission authorization information sent by the base station and scrambled by the wireless network temporary identifier used for device-to-device communication, and Device-to-device communication is performed according to the descrambled transmission authorization information.
  • the terminal can implement the D2D communication between the terminals according to the temporary identifier of the wireless network for transmitting the device to the device and the transmission authorization information, and satisfy the user. D2D data transfer requirements.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a terminal of an embodiment of the present invention.
  • FIG. 3 is a schematic flow chart of a first embodiment of a device-to-device communication method according to the present invention
  • FIG. 4 is a schematic flowchart of a second embodiment of a device-to-device communication method according to the present invention
  • FIG. 6 is a schematic flowchart diagram of a fourth embodiment of a communication method for implementing a device to a device according to the present invention
  • FIG. 7 is a fifth embodiment of a communication method for implementing a device to a device according to the present invention
  • FIG. 8 is a schematic flow chart of a sixth embodiment of a device-to-device communication method according to the present invention.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • the system in this embodiment includes: a base station 11, a first terminal 21 and a second terminal 22.
  • the first terminal 21 and the second terminal 22 are respectively configured to acquire the D2D communication sent by the base station 11 when the first terminal 21 and the second terminal 22 need to perform D2D communication.
  • the wireless network temporary identifier receives the transmission authorization information sent by the base station 11 and is scrambled by the wireless network temporary identifier for D2D communication, and performs device-to-device communication according to the descrambled transmission authorization information.
  • the base station 11 may send a temporary identifier and transmission of the wireless network for performing D2D communication to the first terminal 21 and the second terminal 22 by using a radio resource control (hereinafter referred to as: radio resource control, hereinafter referred to as: RRC) message.
  • RRC radio resource control
  • Authorization information, the transmission authorization information may be an uplink authorization or a downlink authorization.
  • the first terminal 21 and the second terminal 22 perform D2D communication according to the descrambled transmission authorization information by: acquiring transmission carrier information, and according to the transmission authorization information, on the carrier indicated by the transmission carrier information. Perform the device-to-device communication.
  • the obtaining the transmission carrier information includes: acquiring the transmission carrier information sent by the base station 11, the base station 11 may send the transmission carrier information by using an RRC message, or acquiring the transmission carrier information according to the transmission authorization information.
  • the first terminal 21 or the second terminal 22 is further configured to: acquire a wireless network temporary identifier used for device-to-device communication; and the transmission authorization information includes the device-to-device transmission direction indication information.
  • the first terminal or the second terminal is further configured to: obtain two wireless network temporary identifiers for device-to-device communication, and the wireless network temporary for the device-to-device communication sent by the base station The identification applies to the device to device transmission direction.
  • the first terminal or the second terminal is further configured to: acquire a cell radio network temporary identifier of the first terminal and the second terminal; and the transmission authorization information includes the device-to-device communication indication information.
  • the terminal can implement direct D2D communication between the terminals according to the temporary identifier of the wireless network for performing D2D and the transmission authorization information, and satisfy the D2D between the users. Data transmission requirements.
  • FIG. 2 it is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • the first terminal 21 and the second terminal 22 in FIG. 1 may have the same structural composition as the terminal.
  • the first terminal 21 is taken as an example for description.
  • the first terminal 21 includes:
  • the obtaining module 211 is configured to acquire a wireless network temporary identifier used for D2D communication and transmission authorization information that is scrambled by the wireless network temporary identifier used for D2D communication;
  • the processing module 213 is configured to perform the device-to-device communication according to the descrambled transmission authorization information.
  • the processing module 213 is further configured to perform the D2D communication according to the descrambled transmission authorization information, specifically: performing, according to the transmission authorization information, the device to the carrier indicated by the transmission carrier information. Communication of the device.
  • the acquiring module 211 is further configured to: acquire transmission carrier information. For example, the acquiring module 211 acquires the transmission carrier information sent by the base station; or the acquiring module 211 acquires the transmission carrier information according to the transmission authorization information.
  • the transmission carrier information acquired by the obtaining module 211 may be the transmission carrier information that is sent by the base station 11 through the RRC message; or may be obtained by acquiring the transmission carrier information according to the transmission authorization information, for example, the base station 11 is authorized in the transmission.
  • the carrier specified in the message may be the transmission carrier information that is sent by the base station 11 through the RRC message; or may be obtained by acquiring the transmission carrier information according to the transmission authorization information, for example, the base station 11 is authorized in the transmission.
  • the carrier specified in the message may be the transmission carrier information that is sent by the base station 11 through the RRC message; or may be obtained by acquiring the transmission carrier information according to the transmission authorization information, for example, the base station 11 is authorized in the transmission.
  • the obtaining module 211 is further configured to acquire one of the wireless network temporary identifiers used for device-to-device communication; and the transmission authorization information includes the device-to-device transmission direction indication information.
  • the processing module 213 uses the acquired wireless network temporary identifier for D2D communication to descramble the scrambled transmission authorization information sent by the base station 11, and establishes a D2D communication connection, which is included in the transmission authorization information.
  • the transmission direction indication information of the D2D transmits or receives data in a transmission direction indicated by the information. For example, when the direction indicated by the transmission authorization information descrambled by the first terminal 21 is the first terminal 21 to the second terminal 22, the first terminal 21 transmits data. For another example, when the direction indicated by the transmission authorization information descrambled by the first terminal 21 is the second terminal to the first terminal; the first terminal 21 receives the data.
  • the acquiring module 211 is further configured to obtain two wireless network temporary identifiers for device-to-device communication, and the wireless network temporary identifier used by the base station 11 for device-to-device communication is applicable. The transmission direction of the device to the device.
  • the acquiring module 211 may acquire two wireless network temporary identifiers configured by the base station 11 for D2D communication, and the processing module 213 may use the value of the wireless network temporary identifier for the D2D communication. Determine the transmission direction of the D2D. For example, when the value of the first wireless network temporary identifier configuration for D2D communication is 100, and the value of the second wireless network temporary identification configuration for D2D communication is 200, if the processing module 213 descrambles the transmission authorization information, When the descrambling is obtained by the identifier with the value of 100, it is determined that the applicable D2D transmission direction is the first terminal 21 to the second terminal 22, and the first terminal 21 transmits data; if the identifier is 200, the descrambling is obtained. Then, it is determined that the second terminal 22 is to the first terminal 21, and the first terminal 21 receives the data.
  • the transmission direction corresponding to the value of the radio network temporary identifier for D2D communication can be obtained by the base station 11 and the terminal.
  • the acquiring module 211 is further configured to acquire the cell temporary network identifier of the first terminal and the second terminal; and the transmission authorization information includes the device-to-device communication indication information.
  • the transmission authorization information includes indication information of the D2D communication for indicating to the first terminal 21 that the authorization information is for D2D transmission. When the indication is not included, the first terminal 21 judges that the authorization information is used for transmission authorization between the terminal and the base station, not for transmission authorization for D2D communication.
  • the cell radio network temporary identifiers of the first terminal 21 and the second terminal 22 may be configured as a radio network temporary identifier for D2D communication.
  • the obtaining module 211 needs to acquire the cell wireless network temporary identifiers of the first terminal 21 (the local end) and the second terminal 22 (the opposite end) at the same time when the D2D communication is performed according to the temporary identifier of the cell wireless network. And performing the descrambling of the scrambled transmission grant information by using the local radio network temporary identifier of the local end or the peer end, and the processing module 213 performs D2D communication with the second terminal 22 according to the descrambled transmission grant information.
  • the first terminal 21 further includes a sending module 215, configured to: when the transmission authorization information is descrambled by the cell wireless network temporary identifier of the first terminal 21, according to the transmission authorization information
  • the second terminal 22 transmits the data.
  • the acquiring module 211 is further configured to: when the transmission authorization information is descrambled by the temporary identifier of the cell radio network of the second terminal 22, receive the first according to the transmission authorization information. The data sent by the second terminal.
  • the D2D communication can be implemented according to the temporary identifier of the wireless network for transmitting the device and the transmission authorization information, and the D2D is satisfied between the users by transmitting the temporary identifier of the wireless network for transmitting the device to the device and transmitting the authorization information to the terminal. Data transmission requirements.
  • the base station 11 is further configured to notify a mapping relationship between the device-to-device communication logical channels of the first terminal 21 and the second terminal 22 before transmitting the transmission authorization information.
  • the acquiring module 211 in the first terminal 21 is further configured to acquire a mapping relationship between the logical channels of the device-to-device communication sent by the base station 11.
  • the first terminal 21 needs to perform file transmission to the second terminal 22 according to the file transmission protocol.
  • the logical channel identifiers allocated by the base station 11 to the first terminal 21 and the second terminal 22 are respectively For 3 and 4.
  • the base station 11 needs to associate the logical channel identifier 3 of the first terminal 21 with the logical channel identifier 4 of the second terminal 22, and notify the two terminals of the mapping relationship, so that the The first terminal 21 and the second terminal 22 can correctly transmit and receive data and feedback.
  • the base station 11 may also allocate the same logical channel identifier to the same service that performs D2D transmission on the two terminals. According to the mapping relationship of the logical channels sent by the base station, the D2D communication can be better performed between the first terminal 21 and the second terminal 22.
  • the sending module 215 of the first terminal 21 is further configured to: when the terminal is a sending end, receive, by the acquiring module 211, the device-to-device communication.
  • the wireless network temporarily identifies the buffered state of the logical channel of the device-to-device communication to the base station 11 before temporarily identifying the scrambled transmission grant information.
  • the first terminal 21 Before receiving the transmission authorization information, if the first terminal 21 is the transmitting end, the first terminal 21 may send the D2D communication to the base station 11 by using the sending module 215.
  • the buffer status of the logical channel Specifically, the sending module 215 may use a buffer status report (English full name: buffer statues report, hereinafter referred to as BSR) or an independent component in the BSR, such as a buffer status corresponding to an independent logical channel group, to the The base station 11 indicates the buffer status of the D2D transmission logical channel.
  • BSR buffer status report
  • independent component in the BSR such as a buffer status corresponding to an independent logical channel group
  • the acquiring module 211 of the first terminal 21 is further configured to: when the second terminal 22 is a receiving end, the first terminal 21 is a sending end, and the second When the terminal 22 detects that the radio link control sequence number on the logical channel is out of order, the terminal 22 receives the radio link control RLC information sent by the second terminal 22; the first terminal 21 further includes a retransmission module 216, Retransmitting data to the second terminal 22 according to the RLC information.
  • the first terminal 21 or the second terminal 22 is further configured to send a D2D transmission message to the base station 11; specifically, the sending module of the first terminal 21 215.
  • the device-to-device transmission report is sent to the base station 11, where the device-to-device transmission report includes a report type indication, where the report type indication may be at least one of the following information: Device transmission failure information; device to device The transmission end information; or the device-to-device transmission format adjustment information.
  • the device-to-device transmission format adjustment information may be used to indicate a device-to-device transmission situation, and may also be used to indicate a modulation and coding scheme for adjusting a current transmission (in English: a modulation and coding scheme, hereinafter referred to as MCS) and / or adjust the data transmission power scheme.
  • MCS modulation and coding scheme
  • the sending module 215 of the first terminal 21 may periodically send a D2D transmission report to the base station 11 according to a timer setting time.
  • the timer can be configured by the base station 11.
  • the adjusted report type indicates that a new modulation and coding scheme (in English: modulation and coding scheme, hereinafter referred to as MCS) and/or data transmission power is indicated in the uplink grant sent to the first terminal 21 to indicate After the first terminal 21 adjusts the MCS and/or the data transmission power, the data is transmitted.
  • MCS modulation and coding scheme
  • the first terminal 21 is further configured to: after receiving the device-to-device transmission format adjustment indication sent by the base station 11, re-receive the updated transmission authorization information for the device-to-device communication wireless network temporary identifier scrambling The timer is restarted and timed again to send a device-to-device transmission report to the base station 11.
  • the first terminal 21 may further send a D2D transmission report to the base station 11 when detecting that the number of times the transmission data is abnormal or the proportion exceeds a predetermined threshold; or the number of times of data retransmission reaches a preset maximum weight Sending a D2D transmission report to the base station 11, wherein the predetermined threshold for the number of times the transmission data is abnormal or the maximum number of retransmissions for the number of data retransmissions may be configured by the base station 11 Sended to the first terminal 21.
  • the first terminal 21 specifically sends a D2D transmission message in a manner, and can be selected according to actual needs.
  • the base station 11 can switch the logical channel of the D2D communication to the air interface transmission mode.
  • the base station can adjust the MCS and/or the data transmission power of the D2D communication between the first terminal and the second terminal according to the report at any time, thereby better implementing the first terminal and the second terminal. D2D communication between.
  • the first terminal 21 may further perform a hybrid automatic repeat request (herein referred to as: hybrid automatic repeat request, hereinafter referred to as HARQ) feedback with the second terminal 22, and perform HARQ. Retransmission.
  • HARQ hybrid automatic repeat request
  • the base station 11 can set the number of HARQ transmissions of the D2D transmission to 1, and notify the first terminal 21 and the second terminal 22 to avoid designing a complex physical uplink control channel for D2D transmission (English full name: physical uplink control channel) , hereinafter referred to as: PUCCH ) contradict
  • the HARQ feedback is performed to facilitate the HARQ retransmission, and the data of the D2D transmission is further ensured to be accurate and complete, and the D2D communication is better realized.
  • FIG. 3 it is a schematic flowchart of a first embodiment of a method for implementing device-to-device transmission according to the present invention.
  • the method in this embodiment includes:
  • S101 Obtain a wireless network temporary identifier used for device-to-device communication.
  • S102 Receive transmission authorization information scrambled by the wireless network temporary identifier used for device-to-device communication.
  • the terminal performing D2D communication includes a first terminal and a second terminal. Both the first terminal and the second terminal perform the above S101 to S103. Take the first terminal as an example for explanation.
  • the wireless network temporary identifier for the D2D communication acquired by the first terminal in the S101 includes: acquiring one of the wireless network temporary identifiers for D2D communication; and the transmission authorization information includes the device-to-device transmission direction Instructions.
  • the S103 uses the obtained wireless network temporary identifier for D2D communication to descramble the scrambled transmission authorization information received by the S102, the S103 establishes a D2D communication connection, which is included in the transmission authorization information.
  • the device sends or receives data to the transmission direction indicated by the transmission direction indication information of the device. For example, when the direction indicated by the transmission authorization information obtained by the first terminal descrambling is the first terminal to the second terminal, the first terminal sends data. For another example, when the direction indicated by the transmission grant information descrambled by the first terminal is the second terminal to the first terminal, the first terminal receives the data.
  • the wireless network temporary identifier for the D2D communication acquired by the first terminal in the S101 includes: acquiring two wireless network temporary identifiers for D2D communication; acquiring the wireless network temporary for the D2D communication.
  • the identification applies to the transmission direction of the D2D.
  • the S101 may acquire two temporary identifiers of the wireless network used for D2D communication.
  • the S103 determines the transmission direction of the D2D according to the value of the wireless network temporary identifier for the D2D communication. For example, when the value of the first wireless network temporary identity configuration for D2D communication is 100, and the value of the second wireless network temporary identification configuration for D2D communication is 200, if the transmission authorization information is determined by a value of 100 When the identifier is obtained, the S103 determines that the applicable D2D transmission direction is the first terminal to the second terminal, and the first terminal sends data; if the transmission authorization information is descrambled by the identifier with the value of 200, And determining, as the second terminal, the first terminal, where the first terminal receives data.
  • the radio network temporary identifier for the D2D communication that is acquired by the first terminal in the S101 includes: acquiring a cell radio network temporary identifier of the first terminal and the second terminal; and the transmission authorization information includes the device Instructions to the device communication.
  • the cell radio network temporary identifiers of the first terminal and the second terminal may be configured as a radio network temporary identifier for D2D communication.
  • the transmission authorization information includes indication information of the D2D communication for indicating to the first terminal that the authorization information is for D2D transmission. When the indication is not included, the first terminal determines that the authorization information is used for transmission authorization between the terminal and the base station, not for transmission authorization for D2D communication.
  • the S101 needs to acquire the temporary radio identifier of the cell of the first terminal (the local end) and the second terminal (the opposite end). And using the local or remote cell radio network temporary identifier to descramble the scrambled transmission authorization information, and the first terminal performs D2D communication with the second terminal according to the descrambled transmission authorization information.
  • the first terminal When the transmission authorization information is descrambled by the cell radio network temporary identifier of the first terminal, the first terminal sends data to the second terminal according to the transmission authorization information; when the transmission When the authorization information is descrambled by the cell radio network temporary identifier of the second terminal, the first terminal receives the second terminal to send data according to the transmission authorization information.
  • the terminal can implement the D2D communication simply and quickly according to the temporary identifier of the wireless network for transmitting the device to the device and transmitting the authorization information, and satisfy the user.
  • FIG. 4 it is a flow of a second embodiment of the method for implementing device-to-device transmission of the present invention.
  • the terminal that needs to perform D2D communication in this embodiment includes a first terminal and a second terminal, and the method includes:
  • S201 Obtain a wireless network temporary identifier used for device-to-device communication.
  • S202 Receive transmission authorization information scrambled by the wireless network temporary identifier used for device-to-device communication.
  • S203 Perform device-to-device communication according to the descrambled transmission authorization information.
  • the first terminal receives data that is retransmitted by the second terminal according to the RLC information. Further, optionally, before the S202, the method further includes: acquiring a mapping relationship between the logical channels of the device-to-device communication sent by the base station; when the first terminal or the second terminal is a sending end And the first terminal or the second terminal sends a buffer status of the logical channel of the device-to-device communication to a base station.
  • the first terminal or the second terminal further sends the device-to-device transmission report to the base station, where the device-to-device transmission report includes a report type indication
  • the report type indication is at least one of the following: the device-to-device transmission failure information; the device-to-device transmission end information; or the device-to-device transmission format adjustment information.
  • the method further includes the following steps: the first terminal performs HARQ feedback and HARQ retransmission with the second terminal.
  • the RLC sequence number detection on the logical channel is performed during the D2D communication process, and data retransmission is performed when the out-of-order occurs, so that the data transmitted by the D2D can be ensured to be accurate and complete.
  • FIG. 5 it is a schematic flowchart of a third embodiment of a method for implementing device-to-device transmission according to the present invention.
  • the terminal that needs to perform D2D communication in this embodiment includes a first terminal and a second terminal, and the method includes:
  • S301 Obtain a wireless network temporary identifier used for device-to-device communication.
  • S302 Obtain a mapping relationship between the logical channels of the device-to-device communication sent by the base station.
  • S304 Receive transmission authorization information scrambled by the wireless network temporary identifier used for device-to-device communication.
  • S305 Perform device-to-device communication according to the descrambled transmission authorization information.
  • the mapping relationship between the logical channels sent by the base station is acquired before the D2D communication is established, and the first terminal or the second terminal that is the transmitting end sends the buffer of the logical channel of the device-to-device communication to the base station.
  • the zone status enables better D2D communication from the first terminal to the second terminal.
  • FIG. 6 is a flow chart of a fourth embodiment of a method for implementing device-to-device transmission according to the present invention.
  • the terminal that needs to perform D2D communication in this embodiment includes a first terminal and a second terminal, and the method includes:
  • S401 In a process of performing D2D communication between the first terminal and the second terminal, when the second terminal is a sending end, the first terminal is a receiving end, and the first terminal detects the wireless on the logical channel. When the link control sequence number is out of order, the first terminal feeds back the radio link control RLC information to the second terminal.
  • the first terminal receives data that is retransmitted by the second terminal according to the RLC information.
  • the RLC sequence number detection on the logical channel is performed during the D2D communication process, and data retransmission is performed when the out-of-order occurs, so that the data transmitted by the D2D can be ensured to be accurate and complete.
  • FIG. 7 is a schematic flowchart of a fifth embodiment of a method for implementing device-to-device transmission according to the present invention.
  • the terminal that needs to perform D2D communication in this embodiment includes a first terminal and a second terminal, and the method includes:
  • S501 Send the device-to-device transmission report to the base station during the D2D communication process between the first terminal and the second terminal, where the device-to-device transmission report includes a report type indication.
  • the type of the advertisement is indicated as at least one of the following information:
  • the device to device transmission failure information The device to device transmission failure information
  • the device-to-device transmission end information
  • the device to device transmits format adjustment information.
  • the device-to-device transmission format adjustment information may be used to indicate a device-to-device transmission situation, and may also be used to indicate a modulation and coding scheme for adjusting the current transmission (in English: modulation and coding scheme, hereinafter referred to as MCS) and / or adjust the data transmission power scheme.
  • MCS modulation and coding scheme
  • the transmitting the device-to-device transmission report to the base station includes: sending the device-to-device transmission report to the base station according to a preset time of the timer;
  • the timer is started after receiving the D2D transmission reporting period configured by the base station; after the timer expires, the device-to-device transmission report is sent to the base station. For example, report the number or proportion of HARQ or RLC transmission failures during the period.
  • the D2D transmission report threshold, the D2D transmission report threshold may be the number or proportion of HARQ or RLC transmission failures; after the D2D transmission report threshold is reached, the device-to-device transmission report is sent to the base station, such as reporting HARQ or RLC transmission in the period.
  • the RLC maximum number of transmissions or the maximum number of retransmissions configured by the receiving base station is received; and the device-to-device transmission report is sent to the base station after the D2D transmission reaches the RLC maximum transmission number or the maximum number of retransmissions or the D2D transmission ends, for example, reporting that the D2D transmission fails. Or D2D transmission end or D2D transmission end request.
  • S502 Receive the updated transmission authorization information for the wireless network temporary identifier scrambling for device-to-device communication.
  • the base station may update, according to the transmission report, the transmission authorization information of the radio network temporary identifier scrambling for D2D communication, and indicate a new MCS and/or data transmission power in the transmission authorization information, to indicate the After the terminal and the second terminal adjust the MCS and/or the data transmission power, the data is transmitted.
  • the first terminal or the second terminal is further configured to: after receiving the device-to-device transmission format adjustment indication sent by the base station, receive the updated transmission authorization of the wireless network temporary identifier scrambling for device-to-device communication again. Restart the timer when the information is The timing is re-scheduled to send a device-to-device transmission report to the base station.
  • the base station switches the device-to-device transmission logical channel to the air interface transmission mode.
  • the first terminal or the second terminal specifically sends a D2D transmission advertisement in a manner, and can be selected according to actual needs.
  • the transmission authorization information is updated, so that the data retransmission between the D2Ds is performed, and the data of the D2D transmission is further ensured to be accurate and complete, and the D2D communication can be better realized.
  • FIG. 8 is a schematic flowchart of a sixth embodiment of a method for implementing device-to-device transmission according to the present invention.
  • the terminal that needs to perform D2D communication in this embodiment includes a first terminal and a second terminal, and the method includes:
  • the first terminal performs HARQ retransmission with the second terminal.
  • the second terminal as the receiving end performs HARQ feedback on the first terminal; the first terminal performs D2D HARQ retransmission according to the HARQ feedback; or the second terminal as the receiving end performs a hybrid automatic repeat request to the base station.
  • the HARQ feedback, the base station schedules the HARQ feedback according to the hybrid automatic repeat request, and schedules the first terminal to perform HARQ retransmission of the D2D.
  • the HARQ feedback is performed to facilitate the HARQ retransmission, and the data of the D2D transmission is further ensured to be accurate and complete, and the D2D communication is better realized.
  • the storage medium may be a magnetic disk, an optical disk, or a read-only storage memory.

Abstract

本发明实施例公开了一种实现设备到设备的通讯方法、装置及系统,所述通讯方法包括:获取用于设备到设备通讯的无线网络临时标识;接收由所述用于设备到设备通讯的无线网络临时标识加扰的传输授权信息;及根据解扰后的所述传输授权信息进行所述设备到设备的通讯。本发明通过发送用于进行设备到设备的无线网络临时标识以及传输授权信息给终端,终端根据所述用于进行设备到设备的无线网络临时标识以及传输授权信息可实现 D2D通讯,满足终端间的 D2D数据传输需求。

Description

一种实现设备到设备的通讯方法、 终端及系统 技术领域
本发明涉及通信领域, 尤其涉及一种实现设备到设备的通讯方法、 终 端及系统。 背景技术
设备到设备(英文全称: device to device, 以下简称: D2D )技术就是 一种在移动网络控制下的设备与设备之间直接交换数据的通信技术。 目前 长期演进(英文全称: long term evolution , 以下简称: LTE )等系统下的 D2D技术还处于概念阶段, 没有启动标准化工作。 发明内容
本发明实施例所要解决的技术问题在于, 如何实现设备到设备的通讯。 为了解决上述技术问题, 本发明实施例提供了一种实现设备到设备的 通讯方法, 包括:
获取用于设备到设备通讯的无线网络临时标识;
接收由所述用于设备到设备通讯的无线网络临时标识加扰的传输授权 信息; 及
根据解扰后的所述传输授权信息进行所述设备到设备的通讯。
相应地, 本发明实施例还提供了一种终端, 包括:
获取模块, 用于获取用于设备到设备通讯的无线网络临时标识及由所 述用于设备到设备通讯的无线网络临时标识加扰的传输授权信息;
处理模块, 用于根据解扰后的所述传输授权信息进行所述设备到设备 的通讯。
相应地, 本发明实施例还提供了一种通讯系统, 包括第一终端, 第二 终端以及基站, 其中, 所述第一终端和所述第二终端分别用于获取所述基 站发送的用于设备到设备通讯的无线网络临时标识, 接收所述基站发送的 由所述用于设备到设备通讯的无线网络临时标识加扰的传输授权信息, 并 根据解扰后的所述传输授权信息进行设备到设备的通讯。
实施本发明实施例, 具有如下有益效果:
通过发送用于进行设备到设备的无线网络临时标识以及传输授权信息 给终端, 终端根据所述用于进行设备到设备的无线网络临时标识以及传输 授权信息可实现终端间的 D2D通讯, 满足用户之间的 D2D数据传输需求。 附图说明
图 1是本发明实施例的通讯系统的结构组成示意图;
图 2是本发明实施例的终端的结构组成示意图;
图 3是本发明的实现设备到设备的通讯方法的第一实施例流程示意图; 图 4是本发明的实现设备到设备的通讯方法的第二实施例流程示意图; 图 5是本发明的实现设备到设备的通讯方法的第三实施例流程示意图; 图 6是本发明的实现设备到设备的通讯方法的第四实施例流程示意图; 图 7是本发明的实现设备到设备的通讯方法的第五实施例流程示意图; 图 8是本发明的实现设备到设备的通讯方法的第六实施例流程示意图。 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, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没 有作出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的 范围。
请参见图 1 , 是本发明实施例的通讯系统的结构组成示意图。 本实施例 中的所述系统包括: 基站 11 , 第一终端 21和第二终端 22。
其中, 在所述第一终端 21和所述第二终端 22需要进行 D2D通讯时, 所述第一终端 21和所述第二终端 22分别用于获取所述基站 11发送的用于 D2D通讯的无线网络临时标识, 接收所述基站 11发送的由所述用于 D2D 通讯的无线网络临时标识加扰的传输授权信息, 并根据解扰后的所述传输 授权信息进行设备到设备的通讯。 所述基站 11可通过无线资源控制(英文全称为: radio resource control, 以下简称为: RRC ) 消息向所述第一终端 21和第二终端 22发送用于进行 D2D通讯的无线网络临时标识和传输授权信息, 所述传输授权信息可以为 上行授权, 或者下行授权。
所述第一终端 21和第二终端 22根据解扰后的所述传输授权信息进行 D2D通讯是通过: 获取传输载波信息, 并根据所述传输授权信息在所述传 输载波信息所指示的载波上进行所述设备到设备的通讯。 其中, 所述获取 传输载波信息包括: 获取所述基站 11发送的所述传输载波信息, 所述基站 11可釆用 RRC消息发送传输载波信息; 或者根据所述传输授权信息, 获取 传输载波信息。
其中, 所述第一终端 21或第二终端 22还用于: 获取一个所述用于设 备到设备通讯的无线网络临时标识; 所述传输授权信息包含所述设备到设 备的传输方向指示信息。
或者, 所述第一终端或第二终端还用于: 获取两个所述用于设备到设 备通讯的无线网络临时标识, 及所述基站发送的所述用于设备到设备通讯 的无线网络临时标识适用于所述设备到设备的传输方向。
或者, 所述第一终端或第二终端还用于: 获取第一终端及第二终端的 小区无线网络临时标识; 所述传输授权信息包含所述设备到设备通讯的指 示信息。
通过发送用于进行 D2D 的无线网络临时标识以及传输授权信息给终 端, 终端根据所述用于进行 D2D的无线网络临时标识以及传输授权信息可 实现终端间的直接 D2D通讯, 满足用户之间的 D2D数据传输需求。
请参见图 2, 是本发明实施例的终端的结构组成示意图, 图 1中的第一 终端 21和第二终端 22作为所述终端可以具有相同的结构组成。 本实施例 中, 以第一终端 21为例进行说明。 具体的, 所述第一终端 21包括:
获取模块 211 , 用于获取用于 D2D通讯的无线网络临时标识及由所述 用于 D2D通讯的无线网络临时标识加扰的传输授权信息;
处理模块 213 ,用于根据解扰后的所述传输授权信息进行所述设备到设 备的通讯。 其中, 所述处理模块 213 进一步用于根据解扰后的所述传输授权信息 进行所述 D2D通讯具体包括: 根据所述传输授权信息在所述传输载波信息 所指示的载波上进行所述设备到设备的通讯。
其中, 所述获取模块 211 进一步用于: 于获取传输载波信息。 例如, 所述获取模块 211 获取基站发送的所述传输载波信息; 或者, 所述获取模 块 211根据所述传输授权信息, 获取传输载波信息。
所述获取模块 211 获取的传输载波信息可以由所述基站 11通过 RRC 消息发送的传输载波信息; 也可以是根据所述传输授权信息, 获取传输载 波信息, 例如所述基站 11在所述传输授权信息中指定的载波。
其中, 所述获取模块 211 , 进一步还用于获取一个所述用于设备到设备 通讯的无线网络临时标识; 所述传输授权信息则包含所述设备到设备的传 输方向指示信息。
具体的, 所述处理模块 213釆用获取到的用于 D2D通讯的无线网络临 时标识将所述基站 11发送的加扰的传输授权信息解扰后, 建立 D2D通讯 连接, 按照传输授权信息中包含的所述 D2D的传输方向指示信息所指示的 传输方向发送或者接收数据。 例如, 所述第一终端 21解扰得到的传输授权 信息所指示的方向为第一终端 21到第二终端 22时, 所述第一终端 21发送 数据。 又如, 所述第一终端 21解扰得到的传输授权信息所指示的方向为第 二终端到第一终端时; 所述第一终端 21接收数据。
或者, 所述获取模块 211 , 进一步还用于获取两个所述用于设备到设备 通讯的无线网络临时标识, 及所述基站 11发送的所述用于设备到设备通讯 的无线网络临时标识适用于所述设备到设备的传输方向。
具体的,所述获取模块 211可获取所述基站 11配置的两个用于 D2D通 讯的无线网络临时标识, 所述处理模块 213才艮据所述用于 D2D通讯的无线 网络临时标识的值, 确定所述 D2D 的传输方向。 例如, 当第一用于 D2D 通讯的无线网络临时标识配置的值为 100, 第二用于 D2D通讯的无线网络 临时标识配置的值为 200时, 若所述处理模块 213解扰传输授权信息是由 值为 100的标识解扰得到时, 则确定适用的 D2D传输方向为第一终端 21 到第二终端 22, 所述第一终端 21发送数据; 若为值为 200的标识解扰得到 时, 则确定为第二终端 22到第一终端 21 , 所述第一终端 21接收数据。 用 于 D2D通讯的无线网络临时标识的值所对应的传输方向可由所述基站 11 与终端协商得到。
或者, 所述获取模块 211 , 进一步还用于获取第一终端及第二终端的小 区无线网络临时标识; 所述传输授权信息包含所述设备到设备通讯的指示 信息。 所述传输授权信息中包含该 D2D通讯的指示信息用于向所述第一终 端 21说明该授权信息是用于 D2D传输的。 当不包含该指示时, 所述第一 终端 21判断上述授权信息用于终端与基站之间的传输授权,而非用于 D2D 通讯的传输授权。
具体的, 所述第一终端 21及第二终端 22的小区无线网络临时标识可 配置作为用于 D2D通讯的无线网络临时标识。 才艮据小区无线网络临时标识 进行 D2D通讯时,所述获取模块 211需要同时获取所述第一终端 21 (本端 ) 和所述第二终端 22 (对端) 的小区无线网络临时标识。 并釆用本端或者对 端的小区无线网络临时标识对加扰的传输授权信息进行解扰, 所述处理模 块 213根据解扰后的传输授权信息与所述第二终端 22进行 D2D通讯。 其 中, 所述第一终端 21还包括发送模块 215, 用于当所述传输授权信息由所 述第一终端 21的小区无线网络临时标识解扰得到时, 根据所述传输授权信 息向所述第二终端 22发送数据; 所述获取模块 211 , 进一步还用于当所述 传输授权信息由所述第二终端 22的小区无线网络临时标识解扰得到时, 根 据所述传输授权信息接收所述第二终端发送的数据。
通过发送用于进行设备到设备的无线网络临时标识以及传输授权信息 给终端, 终端根据所述用于进行设备到设备的无线网络临时标识以及传输 授权信息可实现 D2D通讯, 满足用户之间的 D2D数据传输需求。
进一步的, 所述基站 11在发送传输授权信息前, 还用于通知所述第一 终端 21和第二终端 22的设备到设备通讯的逻辑信道之间的映射关系。 所 述第一终端 21 中的所述获取模块 211还用于获取基站 11发送的所述设备 到设备通讯的逻辑信道之间的映射关系。 例如: 所述第一终端 21需要向第 二终端 22根据文件传输协议进行文件传输, 针对该文件传输业务, 所述基 站 11给所述第一终端 21和第二终端 22分配的逻辑信道标识分别为 3和 4。 这种情况下, 所述基站 11需要将所述第一终端 21的逻辑信道标识 3与所 述第二终端 22的逻辑信道标识 4关联起来,并将映射关系通知这两个终端, 使所述第一终端 21和第二终端 22能正确收发数据和反馈。 又如, 所述基 站 11还可以对两个终端进行 D2D传输的同一个业务分配相同的逻辑信道 标识。 根据基站发送的逻辑信道的映射关系, 所述第一终端 21和所述第二 终端 22之间可更好地进行 D2D通讯。
进一步, 如图 2所示, 所述第一终端 21的发送模块 215 , 还用于当所 述终端为发送端时, 在所述所述获取模块 211 接收到由所述用于设备到设 备通讯的无线网络临时标识加扰的传输授权信息之前, 向基站 11发送所述 设备到设备通讯的所述逻辑信道的緩冲区状态。
在接收所述基站 11发送所述传输授权信息之前, 若第一终端 21作为 发送端, 则所述第一终端 21可通过所述发送模块 215向所述基站 11发送 所述 D2D通讯的所述逻辑信道的緩冲区状态。 具体为, 所述发送模块 215 可使用緩存状态报告(英文全称为: buffer statues report, 以下简称: BSR ) 或 BSR中的独立分量, 比如独立的逻辑信道组对应的緩冲区状态, 向所述 基站 11指示 D2D传输逻辑信道的緩冲区状态。
进一步的, 如图 2所示, 所述第一终端 21的所述获取模块 211还用于 当所述第二终端 22为接收端, 所述第一终端 21为发送端, 且所述第二终 端 22检测到所述逻辑信道上的无线链路控制序号发生乱序时, 接收所述第 二终端 22发送的无线链路控制 RLC信息; 所述第一终端 21还包括重传模 块 216, 用于根据所述 RLC信息向所述第二终端 22重传数据。
通过所述获取模块 211和所述重传模块 216, 使得第一终端 21和第二 终端 22之间在 D2D通讯时, 在出现异常时实现数据重传, 保证 D2D传输 的数据的准确完整。
进一步的, 在进行 D2D通讯过程中, 所述第一终端 21或者第二终端 22还用于向所述基站 11发送 D2D传输 ^艮告; 具体的, 所述第一终端 21的 所述发送模块 215 , 还用于向基站 11发送所述设备到设备的传输报告, 所 述设备到设备的传输报告包括报告类型指示, 其中, 所述报告类型指示可 以为以下信息的至少一种: 所述设备到设备传输失败信息; 所述设备到设 备传输结束信息; 或所述设备到设备传输格式调整信息。 例如, 所述设备 到设备传输格式调整信息可以用于指示设备到设备的传输情况, 也可以用 于指示调整当前传输的调制编码方案 (英文全称为: modulation and coding scheme, 以下简称: MCS )和 /或调整数据传输功率的方案。
所述第一终端 21的所述发送模块 215可根据定时器设定时间, 周期性 地向所述基站 11发送 D2D传输报告。 所述定时器可由所述基站 11配置。 调整的报告类型指示, 在发送给所述第一终端 21的上行授权中指示新的调 制编码方案 (英文全称为: modulation and coding scheme, 以下简称: MCS ) 和 /或数据传输功率,以指示所述第一终端 21调整 MCS和 /或数据传输功率 后, 再进行数据的传输。 所述第一终端 21还用于在接收到基站 11发送的 设备到设备传输格式调整指示之后, 再次接收到更新的所述用于设备到设 备通讯的无线网络临时标识加扰的传输授权信息时, 重启所述定时器, 重 新进行计时以便向所述基站 11发送设备到设备传输报告。
所述第一终端 21还可以在检测到逻辑信道上传输数据发生异常的次数 或比例超出预定门限时, 向所述基站 11发送 D2D传输报告; 或者在数据 重传的次数达到预设的最大重传次数时, 向所述基站 11发送 D2D传输报 告, 其中, 所述关于传输数据发生异常的次数的预定门限或所述关于数据 重传的次数的最大重传次数均可由所述基站 11配置后发送给所述第一终端 21。 所述第一终端 21具体釆用何种方式发送 D2D传输 ^艮告, 可根据实际 需要进行选择。
如果基站 11接收到的 D2D传输报告的报告类型为 D2D通讯失败或 D2D通讯结束, 则基站 11可将 D2D通讯的逻辑信道切换到空口传输方式。
通过向基站发送报告通知传输情况, 可使得基站随时根据报告调整第 一终端和第二终端之间的 D2D通讯的 MCS和 /或数据传输功率, 更好地实 现了第一终端和第二终端之间的 D2D通讯。
进一步的, 在 D2D通讯结束时, 所述第一终端 21还可与所述第二终 端 22进行混合自动重传请求 (英文全称为: hybrid automatic repeat request, 以下简称: HARQ )反馈, 并进行 HARQ重传。 为了简化终端的实现, 所 述基站 11可以将 D2D传输的 HARQ传输次数设置为 1 , 并通知所述第一 终端 21和第二终端 22, 可避免为 D2D传输设计复杂的物理上行控制信道 (英文全称为: physical uplink control channel, 以下简称: PUCCH )„
在 D2D通讯结束之后 , 进行 HARQ反馈, 以便于进行 HARQ重传, 也进一步的保证 D2D传输的数据的准确完整, 更好地实现 D2D通讯。
下面对本发明的实现设备到设备传输的方法进行详细描述。
请参见图 3 ,是本发明的实现设备到设备传输的方法的第一实施例流程 示意图。 本实施例中的所述方法包括:
S101 : 获取用于设备到设备通讯的无线网络临时标识。
S102: 接收由所述用于设备到设备通讯的无线网络临时标识加扰的传 输授权信息。
S 103: 根据解扰后的所述传输授权信息进行所述设备到设备的通讯。 本实施例中, 进行 D2D通讯的终端包括第一终端和第二终端。 所述第 一终端和所述第二终端均执行上述 S101 至 S103。 以第一终端为例进行说 明。
所述第一终端在所述 S101获取的用于 D2D通讯的无线网络临时标识 包括: 获取一个所述用于 D2D通讯的无线网络临时标识; 所述传输授权信 息包含所述设备到设备的传输方向指示信息。
具体的, 所述 S103釆用获取到的用于 D2D通讯的无线网络临时标识 将所述 S102接收的加扰的传输授权信息解扰后, 所述 S103建立 D2D通讯 连接, 按照传输授权信息中包含的所述设备到设备的传输方向指示信息所 指示的传输方向发送或者接收数据。 例如, 所述第一终端解扰得到的传输 授权信息所指示的方向为第一终端到第二终端时, 所述第一终端发送数据。 又如, 所述第一终端解扰得到的传输授权信息所指示的方向为第二终端到 第一终端时, 所述第一终端接收数据。
或者, 所述第一终端在所述 S101获取的用于 D2D通讯的无线网络临 时标识包括: 获取两个所述用于 D2D通讯的无线网络临时标识; 获取所述 用于 D2D通讯的无线网络临时标识适用于所述 D2D的传输方向。
具体的, 所述 S101可获取两个用于 D2D通讯的无线网络临时标识, 所述 S103才艮据所述用于 D2D通讯的无线网络临时标识的值,确定所述 D2D 的传输方向。 例如, 当第一用于 D2D通讯的无线网络临时标识配置的值为 100, 第二用于 D2D通讯的无线网络临时标识配置的值为 200时, 若所述 传输授权信息是由值为 100 的标识解扰得到时, 则所述 S103 确定适用的 D2D传输方向为第一终端到第二终端, 所述第一终端发送数据; 若所述传 输授权信息是由值为 200 的标识解扰得到时, 则确定为第二终端到第一终 端, 所述第一终端接收数据。
或者, 所述第一终端在所述 S101获取的用于 D2D通讯的无线网络临 时标识包括: 获取所述第一终端及第二终端的小区无线网络临时标识; 所 述传输授权信息包含所述设备到设备通讯的指示信息。 所述第一终端及第 二终端的小区无线网络临时标识可配置作为用于 D2D通讯的无线网络临时 标识。 所述传输授权信息中包含该 D2D通讯的指示信息用于向所述第一终 端说明该授权信息是用于 D2D传输的。 当不包含该指示时, 所述第一终端 判断上述授权信息用于终端与基站之间的传输授权, 而非用于 D2D通讯的 传输授权。
具体的, 根据小区无线网络临时标识进行 D2D通讯时, 所述 S101需 要同时获取所述第一终端 (本端)和所述第二终端 (对端) 的小区无线网 络临时标识。 并釆用本端或者对端的小区无线网络临时标识对加扰的传输 授权信息进行解扰, 所述第一终端根据解扰后的传输授权信息与所述第二 终端进行 D2D通讯。 其中, 当所述传输授权信息由所述第一终端的小区无 线网络临时标识解扰得到时, 所述第一终端根据所述传输授权信息向所述 第二终端发送的数据; 当所述传输授权信息由所述第二终端的小区无线网 络临时标识解扰得到时, 所述第一终端根据所述传输授权信息接收所述第 二终端发送数据。
通过发送用于进行设备到设备的无线网络临时标识以及传输授权信息 给终端, 终端根据所述用于进行设备到设备的无线网络临时标识以及传输 授权信息即可简单快捷地实现 D2D通讯,满足用户之间的 D2D数据传输需 求。
再请参见图 4,是本发明的实现设备到设备传输的方法的第二实施例流 程示意图。 本实施例中需进行 D2D通讯的终端包括第一终端和第二终端 , 所述方法包括:
S201 : 获取用于设备到设备通讯的无线网络临时标识。
S202: 接收由所述用于设备到设备通讯的无线网络临时标识加扰的传 输授权信息。
S203: 根据解扰后的所述传输授权信息进行所述设备到设备的通讯。
S204: 在通讯过程中, 当所述第二终端为发送端, 所述第一终端为接 收端, 且所述第一终端检测到所述逻辑信道上的无线链路控制序号发生乱 序时, 所述第一终端向所述第二终端反馈无线链路控制 RLC信息。
S205:所述第一终端接收所述第二终端根据所述 RLC信息重传的数据。 进一步可选地, 在所述 S202之前, 还可包括: 获取基站发送的所述设 备到设备通讯的逻辑信道之间的映射关系; 当所述第一终端或所述第二终 端为发送端时 , 所述第一终端或所述第二终端向基站发送所述设备到设备 通讯的所述逻辑信道的緩冲区状态。
进一步可选地, 在所述 S203进行 D2D通讯过程中, 还包括所述第一 终端或者第二终端向基站发送所述设备到设备的传输报告, 所述设备到设 备的传输报告包括报告类型指示, 其中, 所述报告类型指示为以下信息的 至少一种: 所述设备到设备传输失败信息; 所述设备到设备传输结束信息; 或所述设备到设备传输格式调整信息。
进一步可选地, 在设备到设备传输完成之后, 还包括步骤: 第一终端 与第二终端进行 HARQ反馈以及 HARQ重传。
在本实施例中 ,在 D2D通讯过程中进行逻辑信道上的 RLC序号检测并 在发生乱序时进行数据重传, 能够保证 D2D传输的数据的准确完整。
再请参见图 5 ,是本发明的实现设备到设备传输的方法的第三实施例流 程示意图。 本实施例中需进行 D2D通讯的终端包括第一终端和第二终端, 所述方法包括:
S301 : 获取用于设备到设备通讯的无线网络临时标识。
S302: 获取基站发送的所述设备到设备通讯的逻辑信道之间的映射关 系。 S303: 当所述第一终端或所述第二终端为发送端时, 所述第一终端或 所述第二终端向基站发送所述设备到设备通讯的所述逻辑信道的緩冲区状 态。
S304: 接收由所述用于设备到设备通讯的无线网络临时标识加扰的传 输授权信息。
S305: 根据解扰后的所述传输授权信息进行所述设备到设备的通讯。 本实施例中, 在建立 D2D通讯之前获取基站发送的逻辑信道之间的映 射关系, 并且作为发送端的第一终端或所述第二终端向基站发送所述设备 到设备通讯的逻辑信道的緩冲区状态, 能够更好地实现第一终端到第二终 端的 D2D通讯。
再请参见图 6,是本发明的实现设备到设备传输的方法的第四实施例流 程示意图。 本实施例中需进行 D2D通讯的终端包括第一终端和第二终端, 所述方法包括:
S401 : 在第一终端与第二终端进行 D2D通讯过程中, 当所述第二终端 为发送端, 所述第一终端为接收端, 且所述第一终端检测到所述逻辑信道 上的无线链路控制序号发生乱序时, 所述第一终端向所述第二终端反馈无 线链路控制 RLC信息。
S402:所述第一终端接收所述第二终端根据所述 RLC信息重传的数据。 在本实施例中 ,在 D2D通讯过程中进行逻辑信道上的 RLC序号检测并 在发生乱序时进行数据重传, 能够保证 D2D传输的数据的准确完整。
再请参见图 7 ,是本发明的实现设备到设备传输的方法的第五实施例流 程示意图。 本实施例中需进行 D2D通讯的终端包括第一终端和第二终端, 所述方法包括:
S501 : 在第一终端与第二终端进行 D2D通讯过程中, 向基站发送所述 设备到设备的传输报告, 所述设备到设备的传输报告包括报告类型指示。
其中, 所述 ^艮告类型指示为以下信息的至少一种:
所述设备到设备传输失败信息;
所述设备到设备传输结束信息; 或
所述设备到设备传输格式调整信息。 例如, 所述设备到设备传输格式调整信息可以用于指示设备到设备的 传输情况, 也可以用于指示调整当前传输的调制编码方案 (英文全称为: modulation and coding scheme , 以下简称: MCS )和 /或调整数据传输功率的 方案。
所述向基站发送所述设备到设备的传输报告, 包括: 根据定时器的设 定时间, 向所述基站发送所述设备到设备的传输报告;
具体的, 接收到基站配置的 D2D传输报告周期后启动定时器; 在该定 时器超时后向基站发送设备到设备的传输报告。 比如报告该周期内 HARQ 或 RLC传输失败的次数或比例。
或包括: 在检测到所述逻辑信道上所述设备到设备的通讯发生异常的 次数或比例超出门限值时, 向所述基站发送所述设备到设备的传输报告; 具体的,接收基站配置的 D2D传输报告门限,所述 D2D传输报告门限 可以是 HARQ或 RLC传输失败的次数或比例; 在 D2D传输报告门限达到 后向基站发送设备到设备的传输报告,比如报告该周期内 HARQ或 RLC传 输失败的次数或比例, 或简单地指示门限达到。
或包括: 在所述设备到设备的数据重传次数达到预设的最大重传次数 时, 向所述基站发送所述设备到设备的传输报告。
具体的, 接收基站配置的 RLC最大传输次数或最大重传次数; 在 D2D 传输达到 RLC最大传输次数或最大重传次数或 D2D传输结束后向基站发送 设备到设备的传输报告, 比如报告 D2D传输失败或 D2D传输结束或 D2D 传输结束请求。
S502: 接收更新的所述用于设备到设备通讯的无线网络临时标识加扰 的传输授权信息。
所述基站会根据所述传输报告, 更新所述用于 D2D通讯的无线网络临 时标识加扰的传输授权信息,在传输授权信息中指示新的 MCS和 /或数据传 输功率, 以指示所述第一终端和第二终端调整 MCS和 /或数据传输功率后, 再进行数据的传输。 所述第一终端或者第二终端还用于在接收到基站发送 的设备到设备传输格式调整指示之后, 再次接收到更新的所述用于设备到 设备通讯的无线网络临时标识加扰的传输授权信息时, 重启所述定时器, 重新进行计时以便向所述基站发送设备到设备传输报告。
如果基站接收到的 D2D的传输报告的类型为设备到设备传输失败或设 备到设备传输结束, 则基站将设备到设备传输的逻辑信道切换到空口传输 方式。
所述第一终端或者第二终端具体釆用何种方式发送 D2D传输 告, 可 根据实际需要进行选择。
在本实施例中, 根据 D2D的传输报告, 更新传输授权信息, 以便于进 行 D2D间的数据重传,也进一步的保证 D2D传输的数据的准确完整,可更 好地实现 D2D通讯。
再请参见图 8,是本发明的实现设备到设备传输的方法的第六实施例流 程示意图。 本实施例中需进行 D2D通讯的终端包括第一终端和第二终端, 所述方法包括:
S601 : 在第一终端与第二终端进行 D2D通讯结束时, 所述第一终端与 所述第二终端进行 HARQ反馈。
S602: 所述第一终端与所述第二终端进行 HARQ重传。
具体的, 作为接收端的第二终端向所述第一终端进行 HARQ反馈; 所 述第一终端根据 HARQ反馈进行 D2D的 HARQ重传; 或者, 作为接收端 的第二终端向基站进行混合自动重传请求 HARQ反馈, 所述基站根据所述 混合自动重传请求 HARQ反馈, 调度所述第一终端进行 D2D的 HARQ重 传。
在本实施例中, 在 D2D通讯结束之后, 进行 HARQ反馈, 以便于进行 HARQ 重传, 也进一步的保证 D2D传输的数据的准确完整, 更好地实现 D2D通讯。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流 程, 是可以通过计算机程序来指令相关的硬件来完成, 所述的程序可存储 于一计算机可读取存储介质中, 该程序在执行时, 可包括如上述各方法的 实施例的流程。 其中, 所述的存储介质可为磁碟、 光盘、 只读存储记忆体
RAM )等。
以上所揭露的仅为本发明较佳实施例而已, 当然不能以此来限定本发 明之权利范围, 因此依本发明权利要求所作的等同变化, 仍属本发明所涵 盖的范围。

Claims

权利要求
1、 一种实现设备到设备的通讯方法, 其特征在于, 包括:
获取用于设备到设备通讯的无线网络临时标识;
接收由所述用于设备到设备通讯的无线网络临时标识加扰的传输授权 信息; 及
根据解扰后的所述传输授权信息进行所述设备到设备的通讯。
2、 如权利要求 1所述的方法, 其特征在于, 所述根据解扰后的所述传 输授权信息进行所述设备到设备的通讯, 包括:
获取传输载波信息; 及
根据所述传输授权信息在所述传输载波信息所指示的载波上进行所述 设备到设备的通讯;
其中, 所述获取传输载波信息包括:
获取基站发送的所述传输载波信息; 或者
根据所述传输授权信息, 获取传输载波信息。
3、 如权利要求 1或 2所述的方法, 其特征在于,
所述获取用于设备到设备通讯的无线网络临时标识, 包括: 获取一个 所述用于设备到设备通讯的无线网络临时标识;
所述传输授权信息包含所述设备到设备的传输方向指示信息。
4、 如权利要求 1或 2所述的方法, 其特征在于,
所述获取用于设备到设备通讯的无线网络临时标识, 包括: 获取两个 所述用于设备到设备通讯的无线网络临时标识;
获取所述基站发送的所述用于设备到设备通讯的无线网络临时标识适 用于所述设备到设备的传输方向。 如权利要求 1或 2所述的方法, 其特征在于, 所述获取用于设备到设备通讯的无线网络临时标识, 包括: 获取第一 终端及第二终端的小区无线网络临时标识;
所述传输授权信息包含所述设备到设备通讯的指示信息。
6、 如权利要求 5所述的方法, 其特征在于:
当所述传输授权信息由所述第一终端的小区无线网络临时标识解扰得 到时, 所述第一终端根据所述传输授权信息向所述第二终端发送数据; 当所述传输授权信息由所述第二终端的小区无线网络临时标识解扰得 到时, 所述第一终端根据所述传输授权信息接收所述第二终端发送的数据。
7、 如权利要求 1-6任一项所述的方法, 其特征在于, 所述接收由所述 用于设备到设备通讯的无线网络临时标识加扰的传输授权信息前还包括: 获取基站发送的所述设备到设备通讯的逻辑信道之间的映射关系。
8、 如权利要求 7所述的方法, 其特征在于, 所述接收由所述用于设备 到设备通讯的无线网络临时标识加扰的传输授权信息前, 还包括:
向基站发送所述设备到设备通讯的逻辑信道的緩冲区状态。
9、 如权利要求 7或 8所述的方法, 其特征在于, 还包括:
当所述第二终端为发送端, 所述第一终端为接收端, 且所述第一终端 检测到所述逻辑信道上的无线链路控制序号发生乱序时, 所述第一终端向 所述第二终端反馈无线链路控制 RLC信息;
所述第一终端接收所述第二终端根据所述 RLC信息重传的数据。
10、 如权利要求 1-9任一项所述的方法, 其特征在于, 还包括: 向基站发送所述设备到设备的传输报告, 所述设备到设备的传输报告 包括报告类型指示, 其中, 所述报告类型指示为以下信息的至少一种: 所述设备到设备传输失败信息;
所述设备到设备传输结束信息; 或 所述设备到设备传输格式调整信息。
11、 如权利要求 10所述的方法, 其特征在于,
所述向基站发送所述设备到设备的传输报告, 包括: 根据定时器的设 定时间, 向所述基站发送所述设备到设备的传输报告; 或在检测到所述逻 所述基站发送所述设备到设备的传输报告; 或在所述设备到设备的数据重 传次数达到预设的最大重传次数时, 向所述基站发送所述设备到设备的传 输报告;
接收更新的所述用于设备到设备通讯的无线网络临时标识加扰的传输 授权信息; 及
重启所述定时器。
12、 一种终端, 其特征在于, 包括:
获取模块, 用于获取用于设备到设备通讯的无线网络临时标识及由所 述用于设备到设备通讯的无线网络临时标识加扰的传输授权信息;
处理模块, 用于根据解扰后的所述传输授权信息进行所述设备到设备 的通讯。
13、 如权利要求 12所述的终端, 其特征在于,
所述获取模块, 进一步用于获取传输载波信息;
所述处理模块, 进一步用于根据所述传输授权信息在所述传输载波信 息所指示的载波上进行所述设备到设备的通讯;
其中, 所述获取模块, 进一步用于:
获取基站发送的所述传输载波信息; 或者
根据所述传输授权信息, 获取传输载波信息。
14、 如权利要求 12或 13所述的终端, 其特征在于,
所述获取模块, 还用于获取一个所述用于设备到设备通讯的无线网络 临时标 i只;
所述传输授权信息包含所述设备到设备的传输方向指示信息。
15、 如权利要求 12或 13所述的终端, 其特征在于,
所述获取模块, 还用于获取两个所述用于设备到设备通讯的无线网络 临时标识; 及所述基站发送的所述用于设备到设备通讯的无线网络临时标 识适用于所述设备到设备的传输方向。
16、 如权利要求 12或 13所述的终端, 其特征在于,
所述获取模块, 还用于获取第一终端及第二终端的小区无线网络临时 标识;
所述传输授权信息包含所述设备到设备通讯的指示信息。
17、 如权利要求 16所述的终端, 其特征在于,
还包括发送模块, 用于当所述传输授权信息由所述终端的小区无线网 络临时标识解扰得到时, 根据所述传输授权信息向所述第二终端发送数据; 所述获取模块, 还用于当所述传输授权信息由所述第二终端的小区无 线网络临时标识解扰得到时, 根据所述传输授权信息接收所述第二终端发 送的数据。
18、 如权利要求 12或者 13所述的终端, 其特征在于,
所述获取模块, 还用于获取基站发送的所述设备到设备通讯的逻辑信 道之间的映射关系。
19、 如权利要求 18所述的终端, 其特征在于,
所述发送模块, 还用于当所述终端为发送端时, 在所述获取模块接收 到由所述用于设备到设备通讯的无线网络临时标识加扰的传输授权信息之 前, 向基站发送所述设备到设备通讯的所述逻辑信道的緩冲区状态。 20、 如权利要求 18或者 19所述的终端, 其特征在于, 所述获取模块, 还用于当所述第二终端为接收端, 所述终端为发送端, 且所述第二终端检测到所述逻辑信道上的无线链路控制序号发生乱序时, 接收所述第二终端发送的无线链路控制 RLC信息;
还包括重传模块, 用于根据所述 RLC信息向所述第二终端重传数据。
21、 如权利要求 12至 20任一项所述的终端, 其特征在于,
所述发送模块, 还用于向基站发送所述设备到设备的传输报告, 所述 设备到设备的传输报告包括报告类型指示, 其中, 所述报告类型指示为以 下信息的至少一种:
所述设备到设备传输失败信息;
所述设备到设备传输结束信息; 或
所述设备到设备传输格式调整信息。
22、 一种通讯系统, 其特征在于, 包括第一终端, 第二终端以及基站, 其中,
所述第一终端和所述第二终端分别用于获取所述基站发送的用于设备 到设备通讯的无线网络临时标识, 接收所述基站发送的由所述用于设备到 设备通讯的无线网络临时标识加扰的传输授权信息, 并根据解扰后的所述 传输授权信息进行设备到设备的通讯。
23、 如权利要求 22所述的通讯系统, 其特征在于, 所述第一终端或第 二终端, 还用于:
获取传输载波信息; 及
根据所述传输授权信息在所述传输载波信息所指示的载波上进行所述 设备到设备的通讯;
其中, 所述获取传输载波信息包括:
获取基站发送的所述传输载波信息; 或者
根据所述传输授权信息, 获取传输载波信息。 24、 如权利要求 22或者 23所述的通讯系统, 其特征在于, 所述第一 终端或第二终端还用于:
获取一个所述用于设备到设备通讯的无线网络临时标识;
所述传输授权信息包含所述设备到设备的传输方向指示信息。
25、 如权利要求 22或 23所述的通讯系统, 其特征在于, 所述第一终 端或第二终端还用于:
获取两个所述用于设备到设备通讯的无线网络临时标识, 及所述基站 发送的所述用于设备到设备通讯的无线网络临时标识适用于所述设备到设 备的传输方向。
26、 如权利要求 22或 23所述的通讯系统, 其特征在于, 所述第一终 端或第二终端还用于:
获取第一终端及第二终端的小区无线网络临时标识;
所述传输授权信息包含所述设备到设备通讯的指示信息。
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US9629192B2 (en) 2017-04-18
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US20140206372A1 (en) 2014-07-24
EP2741563A1 (en) 2014-06-11
US20170196038A1 (en) 2017-07-06
JP2014532340A (ja) 2014-12-04
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CN103037359A (zh) 2013-04-10
JP6009571B2 (ja) 2016-10-19

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