WO2017193306A1 - 设备对设备d2d通信的方法和d2d设备 - Google Patents

设备对设备d2d通信的方法和d2d设备 Download PDF

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Publication number
WO2017193306A1
WO2017193306A1 PCT/CN2016/081714 CN2016081714W WO2017193306A1 WO 2017193306 A1 WO2017193306 A1 WO 2017193306A1 CN 2016081714 W CN2016081714 W CN 2016081714W WO 2017193306 A1 WO2017193306 A1 WO 2017193306A1
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Prior art keywords
information
sps
time
data packet
spt service
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PCT/CN2016/081714
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English (en)
French (fr)
Inventor
唐海
Original Assignee
广东欧珀移动通信有限公司
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Publication date
Priority to CN201680083115.9A priority Critical patent/CN108702643B/zh
Priority to CN202110336551.5A priority patent/CN113068255A/zh
Priority to EP16901261.4A priority patent/EP3413650B1/en
Priority to BR112018071649-9A priority patent/BR112018071649B1/pt
Priority to PCT/CN2016/081714 priority patent/WO2017193306A1/zh
Priority to US16/095,770 priority patent/US11134475B2/en
Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to JP2018550346A priority patent/JP7027327B2/ja
Priority to KR1020187027853A priority patent/KR20190002435A/ko
Priority to TW106115187A priority patent/TWI778962B/zh
Publication of WO2017193306A1 publication Critical patent/WO2017193306A1/zh
Priority to HK19100365.6A priority patent/HK1257998A1/zh
Priority to US17/446,892 priority patent/US11576153B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • Embodiments of the present invention relate to the field of wireless communications, and, more particularly, to a device to device (D2D) communication method and a D2D device.
  • D2D device to device
  • the traditional wireless communication performance indicators such as network capacity, spectrum efficiency, etc. need to be continuously improved to further increase the limited and Increasingly tight wireless spectrum utilization; on the other hand, a richer communication model and the resulting increase in end-user experience and the expansion of cellular communication applications are also an evolutionary direction to consider.
  • D2D communication has the potential to improve system performance, enhance user experience, and extend the prospects of cellular communication applications.
  • D2D communication is a technology for direct communication between devices and devices. Compared with traditional cellular communication technologies, D2D devices and D2D devices can directly communicate and transmit data without the need for relaying of base stations, which is called PC5 interface-based communication.
  • the D2D device In the communication mode based on the PC5 interface, the D2D device has two working modes: in mode 1, the resources used for communication between D2D devices are completely allocated by the base station; in mode 2, the D2D device can independently select resources.
  • the Semi-Persistent-Scheduling (SPS) mode means that during long-term evolution (LTE) scheduling, the base station allocates periodic semi-static resources to the terminal, so that the terminal can periodically Sending and receiving service data on the same radio resource.
  • the SPS can adopt Semi-Persistent-Transmission SPT, that is, periodically transmit on semi-static resources.
  • the SPS/SPT mode can be activated (started) or released (stopped) by the base station.
  • the base station can also adjust the period of the SPS/SPT service of the terminal and the resources used.
  • the SPS/SPT mode is introduced into the D2D communication, and the D2D device working in mode 1 can allocate resources to the D2D device through the base station.
  • the base station does not participate in resource scheduling.
  • the D2D device may not be able to obtain resource usage of other D2D devices, and other D2D devices use the same resources to transfer data, creating conflicts.
  • the present application provides a method for D2D communication and a D2D device to solve the problem of resource usage of other D2D devices (which may be first D2D devices) in a case where the D2D device (which may be a second D2D device) can independently select resources. problem.
  • the present application provides a method for D2D communication, the method comprising: a first D2D device generating a data packet, the data packet being a data packet of an SPS/SPT service, where the data packet includes a first scheduling allocation SA Information, the first SA information includes period information of the SPS/SPT service; the first D2D device sends the data packet to a second D2D device.
  • the first D2D device carries the periodic information of the SPS/SPT service in the SA information, so that the second D2D device learns the usage of the resource, so as to implement the transmission of the SPS/SPT service when the second D2D device selects the resource autonomously, and avoids A plurality of D2D devices simultaneously transmit SPS/SPT service data on the same resource, thereby generating a collision.
  • the first SA information further includes indication information, where the indication information is used to indicate that the untransmitted data in the SPS/SPT service is required. The number of transmissions.
  • the first SA information further includes a process number of the SPS/SPT service.
  • the second D2D device can enable SPS/SPT parameters (for example, the period of the SPS/SPT service and the number of transmissions required for the untransmitted data of the SPS/SPT service) Etc.) Corresponds to the SPS/SPT service to improve the accuracy of knowing the use of resources.
  • the process number is randomly generated by the first D2D device.
  • the process ID may be randomly generated by the first D2D device to reduce the probability that different SPS/SPT services of different first D2D devices use the same process number, and improve the second D2D device to correspond to the SPS/SPT parameters to the SPS/SPT service.
  • the accuracy rate may be randomly generated by the first D2D device to reduce the probability that different SPS/SPT services of different first D2D devices use the same process number, and improve the second D2D device to correspond to the SPS/SPT parameters to the SPS/SPT service.
  • the period information or the field in which the indication information is located includes a reserved value, where the reserved value is used to indicate termination of the SPS/SPT service.
  • the second D2D device can learn whether the current SPS/SPT service is terminated, and further know the usage of the resource for transmitting the SPS/SPT service.
  • the information bits reserved in the first SA information include a reserved value, where the reserved value is used to indicate Terminate the SPS/SPT service.
  • the second D2D device can learn whether the current SPS/SPT service is terminated, and further learn the usage of the resource that transmits the SPS/SPT service.
  • the sending time of the data packet is t
  • the method further includes: the first D2D device is Transmitting, by the first time, the second SA information, where the first time is any time before the sending time t, and the second SA information is used to indicate that the first D2D device is to send the sending at the sending time t data pack.
  • the second SA information is sent by the first D2D device at the first moment, so that other D2D devices (which may be the foregoing second D2D device) newly added to the resource pool can correctly learn the usage of the resource.
  • the first time is a ta time, where a is a data to be sent at the sending time t The start time of detection of the resource pool usage by the first D2D device.
  • the second SA information is sent by the first D2D device at time t-a, so that other D2D devices (which may be the foregoing second D2D device) newly added to the resource pool can correctly learn the usage of the resource.
  • the value of the bit corresponding to the period information is 0, indicating that the currently transmitted service is a non-SPS/SPT. business.
  • the value of the bit corresponding to the period information is 0, indicating that the currently transmitted service is a non-SPS/SPT service, so that the second D2D device knows whether the current service transmitted by the first D2D device is an SPS/SPT service, and can be more specifically learned.
  • the use of resources is 0, indicating that the currently transmitted service is a non-SPS/SPT service, so that the second D2D device knows whether the current service transmitted by the first D2D device is an SPS/SPT service, and can be more specifically learned.
  • the present application provides a method for D2D communication, where the method includes: receiving, by a second D2D device, a data packet sent by a first D2D device, where the data packet is a semi-persistent scheduling/semi-static transmission SPS/SPT service.
  • a data packet the data packet includes first scheduling allocation SA information
  • the first SA information includes period information of the SPS/SPT service
  • the second D2D device acquires the first SA from the data packet
  • the second D2D device acquires period information of the SPS/SPT service from the first SA information.
  • the first D2D device carries the periodic information of the SPS/SPT service in the SA information, so that the second D2D device learns the usage of the resource, so as to implement the transmission of the SPS/SPT service when the second D2D device selects the resource autonomously, and avoids A plurality of D2D devices simultaneously transmit SPS/SPT service data on the same resource, thereby generating a collision.
  • the first SA information further includes indication information, where the indication information is used to indicate that the untransmitted data in the SPS/SPT service is required. The number of transmissions.
  • the first SA information further includes a process number of the SPS/SPT service.
  • the second D2D device can enable SPS/SPT parameters (for example, the period of the SPS/SPT service and the number of transmissions required for the untransmitted data of the SPS/SPT service) Etc.) Corresponds to the SPS/SPT service to improve the accuracy of knowing the use of resources.
  • the process number is randomly generated by the first D2D device.
  • the process ID may be randomly generated by the first D2D device to reduce the probability that different SPS/SPT services of different first D2D devices use the same process number, and improve the second D2D device to correspond to the SPS/SPT parameters to the SPS/SPT service.
  • the accuracy rate may be randomly generated by the first D2D device to reduce the probability that different SPS/SPT services of different first D2D devices use the same process number, and improve the second D2D device to correspond to the SPS/SPT parameters to the SPS/SPT service.
  • the period information or the field in which the indication information is located includes a reserved value, where the reserved value is used to indicate Terminate the SPS/SPT service.
  • the device can learn whether the current SPS/SPT service is terminated, and further know the usage of the resource for transmitting the SPS/SPT service.
  • the information bits reserved in the first SA information include a reserved value, where the reserved value is used to indicate Terminate the SPS/SPT service.
  • the second D2D device can learn whether the current SPS/SPT service is terminated, and further learn the usage of the resource that transmits the SPS/SPT service.
  • the sending time of the data packet is t
  • the method further includes: receiving, by the second D2D device The second SA information sent by the first D2D device at the first time, the first time is any time before the sending time t, and the second SA information is used to indicate that the first D2D device is ready to be in the The data packet is transmitted at the transmission time t.
  • the second SA information is sent by the first D2D device at the first moment, so that other D2D devices (which may be the foregoing second D2D device) newly added to the resource pool can correctly learn the usage of the resource.
  • the first time is a ta time, where a is a data to be sent at the sending time t The start time of detection of the resource pool usage by the first D2D device.
  • the second SA information is sent by the first D2D device at time t-a, so that other D2D devices (which may be the foregoing second D2D device) newly added to the resource pool can correctly learn the usage of the resource.
  • the value of the bit corresponding to the period information is 0, indicating that the currently transmitted service is non-SPS/SPT. business.
  • the value of the bit corresponding to the period information is 0, indicating that the currently transmitted service is a non-SPS/SPT service, so that the second D2D device knows whether the current service transmitted by the first D2D device is an SPS/SPT service, and can be more specifically learned.
  • the use of resources is 0, indicating that the currently transmitted service is a non-SPS/SPT service, so that the second D2D device knows whether the current service transmitted by the first D2D device is an SPS/SPT service, and can be more specifically learned.
  • the application provides a D2D device, where the D2D device is a first D2D device, and includes: a generating module, configured to generate a data packet, where the data packet is a data packet of a semi-statically scheduled SPS/SPT service, where The data packet includes first scheduling allocation SA information, and the first SA information The period information of the SPS/SPT service is included; the first sending module sends the data packet to the second D2D device.
  • a generating module configured to generate a data packet, where the data packet is a data packet of a semi-statically scheduled SPS/SPT service, where The data packet includes first scheduling allocation SA information, and the first SA information The period information of the SPS/SPT service is included; the first sending module sends the data packet to the second D2D device.
  • the first D2D device carries the periodic information of the SPS/SPT service in the SA information, so that the second D2D device learns the usage of the resource, so as to implement the transmission of the SPS/SPT service when the second D2D device selects the resource autonomously, and avoids A plurality of D2D devices simultaneously transmit SPS/SPT service data on the same resource, thereby generating a collision.
  • the first SA information further includes indication information, where the indication information is used to indicate that the untransmitted data in the SPS/SPT service is required. The number of transmissions.
  • the first SA information further includes a process number of the SPS/SPT service.
  • the second D2D device can enable SPS/SPT parameters (for example, the period of the SPS/SPT service and the number of transmissions required for the untransmitted data of the SPS/SPT service) Etc.) Corresponds to the SPS/SPT service to improve the accuracy of knowing the use of resources.
  • the process number is randomly generated by the first D2D device.
  • the process ID may be randomly generated by the first D2D device to reduce the probability that different SPS/SPT services of different first D2D devices use the same process number, and improve the second D2D device to correspond to the SPS/SPT parameters to the SPS/SPT service.
  • the accuracy rate may be randomly generated by the first D2D device to reduce the probability that different SPS/SPT services of different first D2D devices use the same process number, and improve the second D2D device to correspond to the SPS/SPT parameters to the SPS/SPT service.
  • the period information or the field in which the indication information is located includes a reserved value, where the reserved value is used to indicate Terminate the SPS/SPT service.
  • the second D2D device can learn whether the current SPS/SPT service is terminated, and further know the usage of the resource for transmitting the SPS/SPT service.
  • the information bits reserved in the first SA information include a reserved value, where the reserved value is used. Instructing to terminate the SPS/SPT service.
  • the second D2D device can learn whether the current SPS/SPT service is terminated, and further learn the usage of the resource that transmits the SPS/SPT service.
  • the sending time of the data packet is t
  • the D2D device further includes: a second sending module, Sending the second SA information at the first time, the first time is any time before the sending time t, and the second SA information is used to indicate that the first D2D device is ready to send at the sending time t The data packet.
  • the second SA information is sent at any time before the sending time t of the first D2D device data packet, so that other D2D devices (which may be the second D2D device) newly added to the resource pool can correctly learn the resource usage.
  • the first time is a ta time, where a is a data to be sent at the sending time t The start time of detection of the resource pool usage by the first D2D device.
  • the second SA information is sent by the first D2D device at time t-a, so that other D2D devices (which may be the foregoing second D2D device) newly added to the resource pool can correctly learn the usage of the resource.
  • the value of the bit corresponding to the period information is 0, indicating that the currently transmitted service is a non-SPS/SPT. business.
  • the value of the bit corresponding to the period information is 0, indicating that the currently transmitted service is a non-SPS/SPT service, so that the second D2D device knows whether the current service transmitted by the first D2D device is an SPS/SPT service, and can be more specifically learned.
  • the use of resources is 0, indicating that the currently transmitted service is a non-SPS/SPT service, so that the second D2D device knows whether the current service transmitted by the first D2D device is an SPS/SPT service, and can be more specifically learned.
  • the application provides a D2D device, where the D2D device is a second D2D device, and includes: a first receiving module, configured to receive a data packet sent by the first D2D device, where the data packet is semi-persistent scheduling/ Transmitting a data packet of the SPS/SPT service, the data packet includes a first scheduling allocation SA information, the first SA information includes period information of the SPS/SPT service, and a first acquiring module, configured to Acquiring the first SA information in the data packet received by the first receiving module; the second acquiring module, configured to acquire the SPS/SPT service from the first SA information acquired by the first acquiring module Cycle information.
  • a first receiving module configured to receive a data packet sent by the first D2D device, where the data packet is semi-persistent scheduling/ Transmitting a data packet of the SPS/SPT service, the data packet includes a first scheduling allocation SA information, the first SA information includes period information of the SPS/SPT service, and a first acquiring module, configured to
  • the first D2D device carries the periodic information of the SPS/SPT service in the SA information, so that the second D2D device learns the usage of the resource, so as to implement the transmission of the SPS/SPT service when the second D2D device selects the resource autonomously, and avoids A plurality of D2D devices simultaneously transmit SPS/SPT service data on the same resource, thereby generating a collision.
  • the first SA information further includes indication information, where the indication information is used to indicate that the untransmitted data in the SPS/SPT service is required. The number of transmissions.
  • the first SA information further includes a process number of the SPS/SPT service.
  • the second D2D device can enable SPS/SPT parameters (for example, the period of the SPS/SPT service and the number of transmissions required for the untransmitted data of the SPS/SPT service) Etc.) Corresponds to the SPS/SPT service to improve the accuracy of knowing the use of resources.
  • the process number is randomly generated by the first D2D device.
  • the process ID may be randomly generated by the first D2D device to reduce the probability that different SPS/SPT services of different first D2D devices use the same process number, and improve the second D2D device to correspond to the SPS/SPT parameters to the SPS/SPT service.
  • the accuracy rate may be randomly generated by the first D2D device to reduce the probability that different SPS/SPT services of different first D2D devices use the same process number, and improve the second D2D device to correspond to the SPS/SPT parameters to the SPS/SPT service.
  • the period information or the field in which the indication information is located includes a reserved value, where the reserved value is used to indicate Terminate the SPS/SPT service.
  • the second D2D device can learn whether the current SPS/SPT service is terminated, and further know the usage of the resource for transmitting the SPS/SPT service.
  • the information bits reserved in the first SA information include a reserved value, where the reserved value is used to indicate Terminate the SPS/SPT service.
  • the device can learn whether the current SPS/SPT service is terminated, and further know the usage of the resource for transmitting the SPS/SPT service.
  • the sending time of the data packet is t
  • the D2D device further includes: a second receiving module, Receiving the second SA information that is sent by the first D2D device at the first time, the first time is any time before the sending time t, and the second SA information is used to indicate the first D2D device It is prepared to transmit the data packet at the transmission time t.
  • the second SA information is sent by the first D2D device at the first moment, so that other D2D devices newly joining the resource pool can correctly learn the usage of the resource.
  • the first time is a ta time, where a is a data to be sent at the sending time t The start time of detection of the resource pool usage by the first D2D device.
  • the second SA information is sent by the first D2D device at time t-a, so that other D2D devices newly joining the resource pool can correctly learn the usage of the resource.
  • the value of the bit corresponding to the period information is 0, indicating that the currently transmitted service is a non-SPS/SPT. business.
  • the value of the bit corresponding to the period information is 0, indicating that the currently transmitted service is a non-SPS/SPT service, so that the second D2D device knows whether the current service transmitted by the first D2D device is an SPS/SPT service, and can be more specifically learned.
  • the use of resources is 0, indicating that the currently transmitted service is a non-SPS/SPT service, so that the second D2D device knows whether the current service transmitted by the first D2D device is an SPS/SPT service, and can be more specifically learned.
  • the present application provides a D2D device, which is a first D2D device, including a memory, a processor, an input/output interface, a communication interface, and a bus system.
  • a D2D device which is a first D2D device, including a memory, a processor, an input/output interface, a communication interface, and a bus system.
  • the memory, the processor, the input/output interface, and the communication interface are connected by a bus system for storing instructions for executing instructions stored by the memory, and when the instructions are executed, the processor passes The communication interface performs the method of the first aspect, and controls the input/output interface to receive input data and information, and output data such as an operation result.
  • the present application provides a D2D device, which is a second D2D device, including a memory, a processor, an input/output interface, a communication interface, and a bus system.
  • a D2D device which is a second D2D device, including a memory, a processor, an input/output interface, a communication interface, and a bus system.
  • the memory, the processor, the input/output interface, and the communication interface are connected by a bus system for storing instructions for executing instructions stored by the memory, and when the instructions are executed, the processor passes The communication interface performs the method of the second aspect and controls the input/output interface Receive input data and information, and output operational results and other data.
  • the present application provides a computer readable storage medium for storing program code for D2D communication, the program code for executing the method instructions in the first aspect.
  • the present application provides a computer readable storage medium for storing program code for D2D communication, the program code for executing the method instructions in the second aspect.
  • the present application provides a method for D2D communication and a D2D device, so that a D2D device (which may be a second D2D device) knows the resource usage of other D2D devices (which may be the first D2D device) in the case of autonomously selecting resources. Transmission of SPS/SPT services.
  • FIG. 1 shows a schematic flow chart of a method of D2D communication according to an embodiment of the present invention.
  • FIG. 2 shows a schematic block diagram of a D2D device in accordance with an embodiment of the present invention.
  • FIG. 3 shows a schematic block diagram of a D2D device in accordance with another embodiment of the present invention.
  • FIG. 4 shows a schematic block diagram of a D2D device in accordance with another embodiment of the present invention.
  • FIG. 5 shows a schematic block diagram of a D2D device 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
  • LTE-A Advanced Long Term Evolution
  • UMTS Universal Mobile Telecommunication System
  • the D2D device (which may be the first D2D device described above) And/or the foregoing second D2D device) includes but is not limited to a user equipment (UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), a mobile telephone (Mobile Telephone), a mobile phone (handset), Portable device, etc.
  • the user equipment can communicate with one or more core networks via a Radio Access Network (RAN), for example, the user equipment can be a mobile phone (or "cellular"
  • RAN Radio Access Network
  • the user equipment can be a mobile phone (or "cellular"
  • the telephone device, the computer with wireless communication function, etc., the user equipment can also be a mobile device that is portable, pocket-sized, handheld, built-in, or in-vehicle.
  • D2D communication may refer to vehicle to vehicle (V2V) communication, or V2X communication.
  • V2X communication can refer to any device with wireless receiving and transmitting capabilities, such as but not limited to slow moving wireless devices, fast moving in-vehicle devices, or network control nodes with wireless transmit and receive capabilities.
  • the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved Node B (eNB or eNB in LTE).
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved Node B
  • LTE Long Term Evolution
  • the e-NodeB may also be an access point for providing an access service in the 5G, which is not limited by the embodiment of the present invention.
  • FIG. 1 shows a schematic flow chart of a method of D2D communication according to an embodiment of the present invention.
  • the method shown in Figure 1 includes:
  • the first D2D device generates a data packet, where the data packet is a data packet of an SPS/SPT service, where the data packet includes a first scheduling assignment (SA) information, where the first SA information carries the SPS. /SPT business cycle information.
  • SA scheduling assignment
  • the foregoing first SA information may be used to indicate time-frequency resource information, Modulation and Coding Scheme (MCS) information, frequency hopping indication, and timing advance (Timing Advance, data of data sent by the first D2D device, TA) and receiving group ID and other information.
  • the time-frequency resource information of the data may be in the form of a Time Resource Pattern (T-RPT), indicating a subframe occupied by the transmission data.
  • T-RPT Time Resource Pattern
  • the period information of the foregoing SPS/SPT service may be a time interval required for transmitting a data packet of the SPS/SPT service, that is, a period of the SPS/SPT service; or may be an index number of a periodic set, that is, A period set is pre-configured by the protocol, for example, ⁇ 0, 10 ms, 20 ms, 40 ms, 100 ms, 200 ms ⁇ , and the period information may be an index number (Index) corresponding to the set, for example, when the index number is 1, corresponding to The period of the SPS/SPT service is 10 ms, and the representation of the period information is not specifically limited.
  • the period information is a period of a service
  • the period value may be 0, indicating that the current service is not an SPS/SPT service.
  • the foregoing second D2D device may be a D2D device that performs D2D communication with the first D2D device, the first D2D device may transmit a transmitting end of a data packet of the SPS/SPT service, and the second D2D device may be a transmitting SPS. The receiving end of the /SPT service packet.
  • the foregoing second D2D device may be a D2D device or a plurality of D2D devices, which is not specifically limited in the present invention.
  • the first SA information further includes indication information, where the indication information is used to indicate a number of transmissions required for untransmitted data in the SPS/SPT service.
  • the value of the bit corresponding to the indication information may be 0, indicating that the current service is not an SPS/SPT service.
  • the first SA information further includes a process number of the SPS/SPT service.
  • a first D2D device may have multiple SPS/SPT services, or different D2D devices may have multiple different SPS/SPT services, and each SPS/SPT service may correspond to a process ID.
  • the Process ID may enable the second D2D device to set SPS/SPT parameters and specific SPS/SPT services. correspond.
  • the Process ID may be a randomly selected value of the first D2D device, so as to reduce the probability that different terminals generate the same Process ID.
  • the method for selecting the Process ID is not specifically limited.
  • the period information or the field where the indication information is located includes a reserved value, where the reserved value is used to indicate termination of the SPS/SPT service.
  • the reserved value included in the period information or the indication information may indicate that the SPS/SPT service corresponding to the process number is not subsequently transmitted, and may also indicate that the subsequent Transmit the data packet of the SPS/SPT service corresponding to the SA.
  • reserved value may also be set in the SA information, and a special information bit (alternatively, a bit) may be reserved in the SA information, for example, 1 bit, indicating the reserved value, and the present invention stores the reserved value.
  • a special information bit alternatively, a bit
  • 1 bit indicating the reserved value
  • the foregoing reserved value may also be used to terminate the SPS/SPT service when the SPS/SPT parameter of the SPS/SPT service (for example, the period information and/or the indication information) changes.
  • the process ID can be randomly selected by the first D2D device, and the process IDs selected by the different first D2D devices cannot be duplicated. To avoid different SPS/SPT services of different terminals, the same process ID is used. And causing the second D2D device to fail to correspond the changed SPS/SPT parameter to the SPS/SPT service, where the first D2D device may send the third SA information before the current SPS/SPT parameter is to be changed, the third The SA information is used to indicate that the data packet of the SPS/SPT service corresponding to the third SA information is terminated.
  • the third SA information may include all or at least part of the information of the foregoing first SA information, which is not specifically limited by the present invention.
  • the second D2D device learns that the resource corresponding to the third SA information is released, and the second D2D device can transmit other SPS/SPT services on the resource. Or the first D2D device that sends the third SA information may also transmit a new SPS/SPT service on the resource.
  • the first D2D device sends the data packet to a second D2D device.
  • the first D2D device carries the periodic information of the SPS/SPT service in the SA information, so that the second D2D device learns the usage of the resource, so as to implement the transmission of the SPS/SPT service when the first D2D device selects the resource autonomously, and avoids A plurality of D2D devices simultaneously transmit SPS/SPT service data on the same resource, thereby generating a collision.
  • the sending time of the data packet is t
  • the method further includes: the first D2D device sending the second SA information at the first moment, where the first moment is the sending At any time before time t, the second SA information is used to indicate that the first D2D device is ready to send the data packet at the sending time t.
  • the foregoing second SA information may further include all or part of the content of the first SA information, and the content of the second SA information is not specifically limited by the present invention.
  • the first time is a time t-a, where a is a start detection time of the first D2D device to use the resource pool in the data to be sent at the sending time t.
  • the first D2D device begins to determine the usage of the resource at least between times [t-a, t-b].
  • ta indicates the start detection time when the first D2D device determines whether the resource is idle
  • tb indicates the end detection time when the first D2D device determines whether the resource is idle
  • the values of a and b are the same.
  • the first D2D device prepares to send the data packet of the SPS/SPT service at time t, then the previous data packet of the data packet And the latter data packet is sent at time tt 1 and time t+t 1 respectively .
  • the D2D device newly joining the resource pool first determines whether the resource is idle at the start time is ta, because the front of the first D2D device A data packet is sent at time tt 1 , and the D2D device newly joining the resource pool cannot know that the first D2D device will send the data packet at time t, so that the first D2D device and the D2D device newly joining the resource pool may be A conflict occurs at time t.
  • the D2D device of the embodiment of the present invention needs to send the second SA information at time t-a, and then send the data packet including the first SA information at time t.
  • the first D2D device if the first D2D device is ready to select (or reselect) the resource of the data packet for transmitting the SPS/SPT service at time t, then the first D2D device starts to determine at least between the times [ta, tb].
  • the use of resources Where a>b ⁇ 0, ta indicates the start detection time when the first D2D device determines whether the resource is idle, and tb indicates the end detection time when the first D2D device determines whether the resource is idle, and for all the first D2D devices, a and b The values are the same.
  • the first D2D device may send the first SA information corresponding to the data packet of the SPS/SPT service at time t+c (c ⁇ 0 and an integer), and send the current SA information at time t+d (d ⁇ c and an integer) Packets for SPS/SPT services.
  • the newly added D2D device in order to prevent the newly added D2D device from knowing the first SA information sent at t+c and the data packet of the SPS/SPT service sent at time t+d (as described above), it is necessary to start at time ta.
  • the first SA information is transmitted at time t+c, and the data packet of the SPS/SPT service is transmitted at time t+d.
  • the second SA information is sent between [t-a, t-b], so that the D2D device newly added to the resource pool to which the first D2D device belongs can be informed of the resource usage. Since the D2D device preparing to transmit the data packet of the SPS/SPT service at the time t, the start detection time for determining whether the resource is idle is the time t-a, it is optimal to transmit the second SA information at the time t-a.
  • a, b, c, d, t may be in units of subframes, and are integers.
  • one subframe duration is 1 ms, and the present invention is for a, b, c, d, t.
  • the unit is not specifically limited.
  • the value of the bit corresponding to the period information is 0, indicating that the currently transmitted service is a non-SPS/SPT service.
  • FIG. 1 illustrates D2D communication according to an embodiment of the present invention.
  • Method, a D2D device according to an embodiment of the present invention will be described below with reference to FIGS. 2 through 5. It should be understood that, for the convenience and brevity of the description, the specific working process of the D2D device in the D2D communication may be referred to the corresponding process in the foregoing method embodiment, and details are not described herein again.
  • FIG. 2 shows a schematic block diagram of a D2D device in accordance with an embodiment of the present invention.
  • the D2D device of FIG. 2 may be a first D2D device, and the D2D device 200 includes a generating module 210 and a first transmitting module 220.
  • the generating module 210 is configured to generate a data packet, where the data packet is a data packet of a semi-persistent scheduling SPS/SPT service, where the data packet includes first scheduling allocation SA information, and the first SA information includes the SPS/SPT Cycle information of the business;
  • the first sending module 220 sends the data packet generated by the generating module 210 to the second D2D device.
  • the first D2D device carries the periodic information of the SPS/SPT service in the SA information, so that the second D2D device learns the usage of the resource, so as to implement the transmission of the SPS/SPT service when the second D2D device selects the resource autonomously, and avoids A plurality of D2D devices simultaneously transmit SPS/SPT service data on the same resource, thereby generating a collision.
  • the first SA information further includes indication information, where the indication information is used to indicate a number of transmissions required for untransmitted data in the SPS/SPT service.
  • the first SA information further includes a process number of the SPS/SPT service.
  • the process number is randomly generated by the first D2D device.
  • the period information or the field where the indication information is located includes a reserved value, where the reserved value is used to indicate termination of the SPS/SPT service.
  • the information bits reserved in the first SA information include a reserved value, where the reserved value is used to indicate termination of the SPS/SPT service.
  • the sending time of the data packet is t
  • the D2D device further includes: a second sending module, configured to send the second SA information at the first moment, where the first moment is At any time before the transmission time t, the second SA information is used to instruct the first D2D device to prepare to transmit the data packet at the transmission time t.
  • the first time is a time t-a, where a is a start detection time of the first D2D device to use the resource pool in the data to be sent at the sending time t.
  • the value of the bit corresponding to the period information is 0, indicating that the currently transmitted service is a non-SPS/SPT service.
  • FIG. 3 shows a schematic block diagram of a D2D device in accordance with another embodiment of the present invention.
  • the D2D device shown in FIG. 3 may be a second D2D device, and the D2D device 300 includes a first receiving module 310, a first obtaining module 320, and a second acquiring module 330.
  • the first receiving module 310 is configured to receive a data packet sent by the first D2D device, where the data packet is a data packet of a semi-persistent scheduling/semi-static transmission SPS/SPT service, where the data packet includes a first scheduling allocation SA information.
  • the first SA information includes period information of the SPS/SPT service;
  • the first obtaining module 320 is configured to obtain the first SA information from the data packet received by the first receiving module 310.
  • the second obtaining module 330 is configured to obtain period information of the SPS/SPT service from the first SA information acquired by the first acquiring module 320.
  • the first D2D device carries the periodic information of the SPS/SPT service in the SA information, so that the second D2D device learns the usage of the resource, so as to implement the transmission of the SPS/SPT service when the second D2D device selects the resource autonomously, and avoids A plurality of D2D devices simultaneously transmit SPS/SPT service data on the same resource, thereby generating a collision.
  • the first SA information further includes indication information, where the indication information is used to indicate a number of transmissions required for untransmitted data in the SPS/SPT service.
  • the first SA information further includes a process number of the SPS/SPT service.
  • the process number is randomly generated by the first D2D device.
  • the period information or the field where the indication information is located includes a reserved value, where the reserved value is used to indicate termination of the SPS/SPT service.
  • the information bits reserved in the first SA information include a reserved value, where the reserved value is used to indicate termination of the SPS/SPT service.
  • the sending time of the data packet is t
  • the D2D device further includes: a second receiving module, configured to receive second SA information that is sent by the first D2D device at the first moment
  • the first time is any time before the sending time t
  • the second SA information is used to indicate that the first D2D device is ready to send the data packet at the sending time t.
  • the first moment is a time t-a, where a is prepared
  • the sending time t is a start detection time of the first D2D device that sends data to the resource pool usage situation.
  • the value of the bit corresponding to the period information is 0, indicating that the currently transmitted service is a non-SPS/SPT service.
  • FIG. 4 shows a schematic block diagram of a D2D device in accordance with another embodiment of the present invention.
  • the D2D device 400 shown in FIG. 4 may be a first D2D device, including: a memory 410, a processor 420, an input/output interface 430, a communication interface 440, and a bus system 450.
  • the memory 410, the processor 420, the input/output interface 430, and the communication interface 440 are connected by a bus system 450 for storing instructions for executing instructions stored in the memory 410 to control input/
  • the output interface 430 receives the input data and information, outputs data such as an operation result, and controls the communication interface 440 to transmit a signal.
  • the processor 420 is configured to generate a data packet, where the data packet is a data packet of a semi-persistent scheduling SPS/SPT service, where the data packet includes first scheduling allocation SA information, and the first SA information includes the SPS /SPT business cycle information;
  • the communication interface 440 sends the data packet to a second D2D device.
  • the processor 420 may be a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more.
  • the integrated circuit is used to implement the related program to implement the technical solution provided by the embodiment of the present invention.
  • communication interface 440 enables communication between D2D device 400 and other devices or communication networks using transceivers such as, but not limited to, transceivers.
  • the memory 410 can include read only memory and random access memory and provides instructions and data to the processor 420.
  • a portion of processor 420 may also include a non-volatile random access memory.
  • processor 420 can also store information of the type of device.
  • the bus system 450 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 450 in FIG.
  • each step of the above method may be completed by an integrated logic circuit of hardware in the processor 420 or an instruction in a form of software.
  • the steps of the method for the D2D communication disclosed in the embodiment of the present invention may be directly implemented by the hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, etc.
  • the storage medium is located in the memory 410, and the processor 420 reads the information in the memory 410 and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the first D2D device carries the periodic information of the SPS/SPT service in the SA information, so that the second D2D device learns the usage of the resource, so as to implement the transmission of the SPS/SPT service when the second D2D device selects the resource autonomously, and avoids A plurality of D2D devices simultaneously transmit SPS/SPT service data on the same resource, thereby generating a collision.
  • the first SA information further includes indication information, where the indication information is used to indicate a number of transmissions required for untransmitted data in the SPS/SPT service.
  • the first SA information further includes a process number of the SPS/SPT service.
  • the process number is randomly generated by the D2D device.
  • the period information or the field where the indication information is located includes a reserved value, where the reserved value is used to indicate termination of the SPS/SPT service.
  • the information bits reserved in the first SA information include a reserved value, where the reserved value is used to indicate termination of the SPS/SPT service.
  • the sending time of the data packet is t
  • the communication interface 440 is further configured to send the second SA information at the first time, where the first time is before the sending time t
  • the second SA information is used to indicate that the first D2D device is ready to send the data packet at the sending time t.
  • the first time is a time t-a, where a is a start detection time of the first D2D device to use the resource pool in the data to be sent at the time t.
  • the value of the bit corresponding to the period information is 0, indicating that the currently transmitted service is a non-SPS/SPT service.
  • FIG. 5 shows a schematic block diagram of a D2D device in accordance with another embodiment of the present invention.
  • the D2D device 500 shown in FIG. 5 may be a second D2D device, including: a memory 510, a processor 520, an input/output interface 530, a communication interface 540, and a bus system 550.
  • the memory 510, the processor 520, the input/output interface 530, and the communication interface 540 are connected by a bus system 550 for storing instructions for executing instructions stored in the memory 520 to control input/
  • the output interface 530 receives the input data and information, outputs data such as an operation result, and controls the communication interface 540 to transmit a signal.
  • the communication interface 540 is configured to receive a data packet sent by the first D2D device, where the data packet is a data packet that is a semi-statically scheduled/semi-statically transmitted SPS/SPT service, the data packet includes first scheduling allocation SA information, and the first SA information includes period information of the SPS/SPT service;
  • the processor 520 is configured to obtain the first SA information from the data packet
  • the processor 520 is further configured to acquire period information of the SPS/SPT service from the first SA information.
  • the processor 520 may be a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more.
  • the integrated circuit is used to implement the related program to implement the technical solution provided by the embodiment of the present invention.
  • communication interface 540 enables communication between D2D device 500 and other devices or communication networks using transceivers such as, but not limited to, transceivers.
  • the memory 510 can include read only memory and random access memory and provides instructions and data to the processor 520.
  • a portion of processor 520 may also include a non-volatile random access memory.
  • processor 520 can also store information of the type of device.
  • the bus system 550 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 550 in the figure.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 520 or an instruction in a form of software.
  • the steps of the method for the D2D communication disclosed in the embodiment of the present invention may be directly implemented by the hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 510, and the processor 520 reads the information in the memory 510 and performs the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the first D2D device carries the periodic information of the SPS/SPT service in the SA information, so that the second D2D device learns the usage of the resource, so as to implement the transmission of the SPS/SPT service when the second D2D device selects the resource autonomously, and avoids A plurality of D2D devices simultaneously transmit SPS/SPT service data on the same resource, thereby generating a collision.
  • the first SA information further includes indication information, where the indication information is used to indicate a number of transmissions required for untransmitted data in the SPS/SPT service.
  • the first SA information further includes the SPS/SPT service. Process number.
  • the process number is randomly generated by the first D2D device.
  • the period information or the field where the indication information is located includes a reserved value, where the reserved value is used to indicate termination of the SPS/SPT service.
  • the information bits reserved in the first SA information include a reserved value, where the reserved value is used to indicate termination of the SPS/SPT service.
  • the sending time of the data packet is t
  • the communication interface 540 is further configured to receive second SA information that is sent by the first D2D device at the first moment, the first The time is the arbitrary time before the sending time t, and the second SA information is used to instruct the first D2D device to prepare to send the data packet at the sending time t.
  • the first time is a time t-a, where a is a start detection time of the first D2D device to use the resource pool in the data to be sent at the sending time t.
  • the value of the bit corresponding to the period information is 0, indicating that the currently transmitted service is a non-SPS/SPT service.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules is only a logical function division.
  • there may be another division manner for example, multiple modules 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 module, and may be electrical, mechanical or otherwise.
  • the modules described as separate components may or may not be physically separate.
  • the components displayed for the module may or may not be physical modules, ie may be located in one place or may be distributed over multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional module in each embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.
  • the functions, if implemented in the form of software functional modules and sold or used as separate products, may be stored in a computer readable storage medium.
  • 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. .

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Abstract

本发明公开了一种设备对设备D2D通信的方法和D2D设备，该方法包括：第一D2D设备生成数据包，所述数据包为半静态调度SPS/SPT业务的数据包，所述数据包包括第一调度分配SA信息，所述第一SA信息包括所述SPS/SPT业务的周期信息；所述第一D2D设备向第二D2D设备发送所述数据包。通过第一D2D设备在SA信息中携带SPS/SPT业务的周期信息，使得第二D2D设备获知资源的使用情况，以实现第二D2D设备自主选择资源的情况下的SPS/SPT业务的传输，避免了多个D2D设备同时在相同的资源上传输SPS/SPT业务数据，从而产生冲突。

Description

设备对设备D2D通信的方法和D2D设备 技术领域
本发明实施例涉及无线通信领域，并且更具体地，涉及一种设备对设备(Device to Device，D2D)通信的方法和D2D设备。
背景技术
在面向第五代移动电话行动通信标准(5-Generation，5G)的无线通信技术的演进中，一方面，传统的无线通信性能指标，比如网络容量、频谱效率等需要持续提升以进一步提高有限且日益紧张的无线频谱利用率；另一方面，更丰富的通信模式以及由此带来的终端用户体验的提升以及蜂窝通信应用的扩展也是一个需要考虑的演进方向。作为面向5G的关键候选技术，D2D通信具有潜在的提高系统性能、提升用户体验、扩展蜂窝通信应用的前景，受到广泛关注。
D2D通信是设备与设备直接通信的技术，与传统的蜂窝通信技术相比，D2D设备与D2D设备可以直接进行通信和数据的传输，无需要基站的中转，称为基于PC5接口的通信。在基于PC5接口的通信方式下，D2D设备有两种工作模式：在模式1下，D2D设备间通信使用的资源是完全由基站分配的；在模式2下，D2D设备是可以自主的选择资源。
半静态调度(Semi-Persistent-Scheduling，SPS)方式是指在长期演进(Long Term Evolution，LTE)的调度传输过程中，基站为终端分配周期性的半静态资源，这样，终端可以周期性的在相同的无线资源上进行业务数据的发送和接收。此时，SPS可以采用半静态传输(Semi-Persistent-Transmission SPT)，即周期性的在半静态资源上进行传输。SPS/SPT方式可以由基站激活(开始)或释放(停止)，当终端工作在SPS/SPT方式下，基站还可以调整终端的SPS/SPT业务的周期和使用的资源。
将SPS/SPT方式引入D2D通信中，工作在模式1下的D2D设备，可以通过基站为该D2D设备分配资源。但是对于工作在模式2下的D2D设备，由于D2D设备可以自主的选择资源传输数据，基站不参与资源的调度，此时，D2D设备可能会因为无法获取到其他D2D设备的资源使用情况，和其他D2D设备使用相同的资源传输数据，从而产生冲突。
发明内容
本申请提供一种D2D通信的方法和D2D设备，以解决D2D设备(可以为第二D2D设备)自主选择资源的情况下，无法获知其他D2D设备(可以为第一D2D设备)的资源使用情况的问题。
第一方面，本申请提供一种D2D通信的方法，所述方法包括：第一D2D设备生成数据包，所述数据包为SPS/SPT业务的数据包，所述数据包包括第一调度分配SA信息，所述第一SA信息包括所述SPS/SPT业务的周期信息；所述第一D2D设备向第二D2D设备发送所述数据包。
通过第一D2D设备在SA信息中携带SPS/SPT业务的周期信息，使得第二D2D设备获知资源的使用情况，以实现第二D2D设备自主选择资源的情况下的SPS/SPT业务的传输，避免了多个D2D设备同时在相同的资源上传输SPS/SPT业务数据，从而产生冲突。
结合第一方面，在第一方面的一种可能的实现方式中，所述第一SA信息还包括指示信息，所述指示信息用于指示所述SPS/SPT业务中的未传输的数据所需的传输次数。
通过第一D2D设备在SA信息中携带指示信息，使得第二D2D设备获知SPS/SPT业务中的未传输的数据所需的传输次数，以确定传输该SPS/SPT业务的资源更加详细的使用情况。
结合第一方面或其上述实现方式的任一种，在第一方面的一种可能的实现方式中，所述第一SA信息还包括所述SPS/SPT业务的过程号。
通过第一D2D设备在SA信息中携带SPS/SPT业务的过程号，使得第二D2D设备能够SPS/SPT参数(例如SPS/SPT业务的周期和SPS/SPT业务的未传输数据所需的传输次数等)和SPS/SPT业务对应，提高获知资源的使用情况的准确率。
结合第一方面或其上述实现方式的任一种，在第一方面的一种可能的实现方式中，所述过程号为所述第一D2D设备随机生成的。
上述过程号可以由第一D2D设备随机生成，以减少不同的第一D2D设备的不同SPS/SPT业务使用相同过程号的概率，提高第二D2D设备将上述SPS/SPT参数对应到SPS/SPT业务的准确率。
结合第一方面或其上述实现方式的任一种，在第一方面的一种可能的实 现方式中，所述周期信息或所述指示信息所在的字段包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
通过在周期信息或指示信息所在的字段添加保留值，使得第二D2D设备可以获知当前的SPS/SPT业务是否终止，进一步获知传输该SPS/SPT业务的资源的使用情况。
结合第一方面或其上述实现方式的任一种，在第一方面的一种可能的实现方式中，所述第一SA信息中预留的信息位包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
通过在所述第一SA信息中预留的信息位添加保留值，使得第二D2D设备可以获知当前的SPS/SPT业务是否终止，进一步获知传输该SPS/SPT业务的资源的使用情况。
结合第一方面或其上述实现方式的任一种，在第一方面的一种可能的实现方式中，所述数据包的发送时刻为t，所述方法还包括：所述第一D2D设备在第一时刻发送第二SA信息，所述第一时刻为所述发送时刻t之前的任意时刻，所述第二SA信息用于指示所述第一D2D设备准备在所述发送时刻t发送所述数据包。
通过第一D2D设备在第一时刻发送第二SA信息，使得新加入该资源池的其他D2D设备(可以为上述第二D2D设备)能够正确获知资源的使用情况。
结合第一方面或其上述实现方式的任一种，在第一方面的一种可能的实现方式中，所述第一时刻为t-a时刻，其中，a为准备在所述发送时刻t发送数据的第一D2D设备对资源池使用情况的开始检测时刻。
通过第一D2D设备在t-a时刻发送第二SA信息，使得新加入该资源池的其他D2D设备(可以为上述第二D2D设备)能够正确获知资源的使用情况。
结合第一方面或其上述实现方式的任一种，在第一方面的一种可能的实现方式中，所述周期信息对应的比特位的取值为0表示当前传输的业务为非SPS/SPT业务。
通过周期信息对应的比特位的取值为0，表示当前传输的业务为非SPS/SPT业务，使得第二D2D设备获知第一D2D设备传输的当前业务是否为SPS/SPT业务，可以更具体获知资源的使用情况。
第二方面，本申请提供一种D2D通信的方法，所述方法包括：第二D2D设备接收第一D2D设备发送的数据包，所述数据包为半静态调度/半静态传输SPS/SPT业务的数据包，所述数据包包括第一调度分配SA信息，所述第一SA信息包括所述SPS/SPT业务的周期信息；所述第二D2D设备从所述数据包中获取所述第一SA信息；所述第二D2D设备从所述第一SA信息中获取所述SPS/SPT业务的周期信息。
通过第一D2D设备在SA信息中携带SPS/SPT业务的周期信息，使得第二D2D设备获知资源的使用情况，以实现第二D2D设备自主选择资源的情况下的SPS/SPT业务的传输，避免了多个D2D设备同时在相同的资源上传输SPS/SPT业务数据，从而产生冲突。
结合第二方面，在第二方面的一种可能的实现方式中，所述第一SA信息还包括指示信息，所述指示信息用于指示所述SPS/SPT业务中的未传输的数据所需的传输次数。
通过第一D2D设备在SA信息中携带指示信息，使得第二D2D设备获知SPS/SPT业务中的未传输的数据所需的传输次数，以确定传输该SPS/SPT业务的资源更加详细的使用情况。
结合第二方面或其上述实现方式的任一种，在第二方面的一种可能的实现方式中，所述第一SA信息还包括所述SPS/SPT业务的过程号。
通过第一D2D设备在SA信息中携带SPS/SPT业务的过程号，使得第二D2D设备能够SPS/SPT参数(例如SPS/SPT业务的周期和SPS/SPT业务的未传输数据所需的传输次数等)和SPS/SPT业务对应，提高获知资源的使用情况的准确率。
结合第二方面或其上述实现方式的任一种，在第二方面的一种可能的实现方式中，所述过程号为所述第一D2D设备随机生成的。
上述过程号可以由第一D2D设备随机生成，以减少不同的第一D2D设备的不同SPS/SPT业务使用相同过程号的概率，提高第二D2D设备将上述SPS/SPT参数对应到SPS/SPT业务的准确率。
结合第二方面或其上述实现方式的任一种，在第二方面的一种可能的实现方式中，所述周期信息或所述指示信息所在的字段包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
通过在周期信息或指示信息所在的字段添加保留值，使得第二D2D设 备可以获知当前的SPS/SPT业务是否终止，进一步获知传输该SPS/SPT业务的资源的使用情况。
结合第二方面或其上述实现方式的任一种，在第二方面的一种可能的实现方式中，所述第一SA信息中预留的信息位包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
通过在所述第一SA信息中预留的信息位添加保留值，使得第二D2D设备可以获知当前的SPS/SPT业务是否终止，进一步获知传输该SPS/SPT业务的资源的使用情况。
结合第二方面或其上述实现方式的任一种，在第二方面的一种可能的实现方式中，所述数据包的发送时刻为t，所述方法还包括：所述第二D2D设备接收所述第一D2D设备在第一时刻发送的第二SA信息，所述第一时刻为所述发送时刻t之前的任意时刻，所述第二SA信息用于指示所述第一D2D设备准备在所述发送时刻t发送所述数据包。
通过第一D2D设备在第一时刻发送第二SA信息，使得新加入该资源池的其他D2D设备(可以为上述第二D2D设备)能够正确获知资源的使用情况。
结合第二方面或其上述实现方式的任一种，在第二方面的一种可能的实现方式中，所述第一时刻为t-a时刻，其中，a为准备在所述发送时刻t发送数据的第一D2D设备对资源池使用情况的开始检测时刻。
通过第一D2D设备在t-a时刻发送第二SA信息，使得新加入该资源池的其他D2D设备(可以为上述第二D2D设备)能够正确获知资源的使用情况。
结合第二方面或其上述实现方式的任一种，在第二方面的一种可能的实现方式中，所述周期信息对应的比特位的取值为0表示当前传输的业务为非SPS/SPT业务。
通过周期信息对应的比特位的取值为0，表示当前传输的业务为非SPS/SPT业务，使得第二D2D设备获知第一D2D设备传输的当前业务是否为SPS/SPT业务，可以更具体获知资源的使用情况。
第三方面，本申请提供一种D2D设备，所述D2D设备为第一D2D设备，包括：生成模块，用于生成数据包，所述数据包为半静态调度SPS/SPT业务的数据包，所述数据包包括第一调度分配SA信息，所述第一SA信息 包括所述SPS/SPT业务的周期信息；第一发送模块，向第二D2D设备发送所述数据包。
通过第一D2D设备在SA信息中携带SPS/SPT业务的周期信息，使得第二D2D设备获知资源的使用情况，以实现第二D2D设备自主选择资源的情况下的SPS/SPT业务的传输，避免了多个D2D设备同时在相同的资源上传输SPS/SPT业务数据，从而产生冲突。
结合第三方面，在第三方面的一种可能的实现方式中，所述第一SA信息还包括指示信息，所述指示信息用于指示所述SPS/SPT业务中的未传输的数据所需的传输次数。
通过第一D2D设备在SA信息中携带指示信息，使得第二D2D设备获知SPS/SPT业务中的未传输的数据所需的传输次数，以确定传输该SPS/SPT业务的资源更加详细的使用情况。
结合第三方面或其上述实现方式的任一种，在第三方面的一种可能的实现方式中，所述第一SA信息还包括所述SPS/SPT业务的过程号。
通过第一D2D设备在SA信息中携带SPS/SPT业务的过程号，使得第二D2D设备能够SPS/SPT参数(例如SPS/SPT业务的周期和SPS/SPT业务的未传输数据所需的传输次数等)和SPS/SPT业务对应，提高获知资源的使用情况的准确率。
结合第三方面或其上述实现方式的任一种，在第三方面的一种可能的实现方式中，所述过程号为所述第一D2D设备随机生成的。
上述过程号可以由第一D2D设备随机生成，以减少不同的第一D2D设备的不同SPS/SPT业务使用相同过程号的概率，提高第二D2D设备将上述SPS/SPT参数对应到SPS/SPT业务的准确率。
结合第三方面或其上述实现方式的任一种，在第三方面的一种可能的实现方式中，所述周期信息或所述指示信息所在的字段包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
通过在周期信息或指示信息所在的字段添加保留值，使得第二D2D设备可以获知当前的SPS/SPT业务是否终止，进一步获知传输该SPS/SPT业务的资源的使用情况。
结合第三方面或其上述实现方式的任一种，在第三方面的一种可能的实现方式中，所述第一SA信息中预留的信息位包括保留值，所述保留值用于 指示终止所述SPS/SPT业务。
通过在所述第一SA信息中预留的信息位添加保留值，使得第二D2D设备可以获知当前的SPS/SPT业务是否终止，进一步获知传输该SPS/SPT业务的资源的使用情况。
结合第三方面或其上述实现方式的任一种，在第三方面的一种可能的实现方式中，所述数据包的发送时刻为t，所述D2D设备还包括：第二发送模块，用于在第一时刻发送第二SA信息，所述第一时刻为所述发送时刻t之前的任意时刻，所述第二SA信息用于指示所述第一D2D设备准备在所述发送时刻t发送所述数据包。
通过第一D2D设备数据包的发送时刻t之前的任意时刻发送第二SA信息，使得新加入该资源池的其他D2D设备(可以为上述第二D2D设备)能够正确获知资源的使用情况。
结合第三方面或其上述实现方式的任一种，在第三方面的一种可能的实现方式中，所述第一时刻为t-a时刻，其中，a为准备在所述发送时刻t发送数据的第一D2D设备对资源池使用情况的开始检测时刻。
通过第一D2D设备在t-a时刻发送第二SA信息，使得新加入该资源池的其他D2D设备(可以为上述第二D2D设备)能够正确获知资源的使用情况。
结合第三方面或其上述实现方式的任一种，在第三方面的一种可能的实现方式中，所述周期信息对应的比特位的取值为0表示当前传输的业务为非SPS/SPT业务。
通过周期信息对应的比特位的取值为0，表示当前传输的业务为非SPS/SPT业务，使得第二D2D设备获知第一D2D设备传输的当前业务是否为SPS/SPT业务，可以更具体获知资源的使用情况。
第四方面，本申请提供一种D2D设备，所述D2D设备为第二D2D设备，包括：第一接收模块，用于接收第一D2D设备发送的数据包，所述数据包为半静态调度/半静态传输SPS/SPT业务的数据包，所述数据包包括第一调度分配SA信息，所述第一SA信息包括所述SPS/SPT业务的周期信息；第一获取模块，用于从所述第一接收模块接收的所述数据包中获取所述第一SA信息；第二获取模块，用于从所述第一获取模块获取的所述第一SA信息中获取所述SPS/SPT业务的周期信息。
通过第一D2D设备在SA信息中携带SPS/SPT业务的周期信息，使得第二D2D设备获知资源的使用情况，以实现第二D2D设备自主选择资源的情况下的SPS/SPT业务的传输，避免了多个D2D设备同时在相同的资源上传输SPS/SPT业务数据，从而产生冲突。
结合第四方面，在第四方面的一种可能的实现方式中，所述第一SA信息还包括指示信息，所述指示信息用于指示所述SPS/SPT业务中的未传输的数据所需的传输次数。
通过第一D2D设备在SA信息中携带指示信息，使得第二D2D设备获知SPS/SPT业务中的未传输的数据所需的传输次数，以确定传输该SPS/SPT业务的资源更加详细的使用情况。
结合第四方面或其上述实现方式的任一种，在第四方面的一种可能的实现方式中，所述第一SA信息还包括所述SPS/SPT业务的过程号。
通过第一D2D设备在SA信息中携带SPS/SPT业务的过程号，使得第二D2D设备能够SPS/SPT参数(例如SPS/SPT业务的周期和SPS/SPT业务的未传输数据所需的传输次数等)和SPS/SPT业务对应，提高获知资源的使用情况的准确率。
结合第四方面或其上述实现方式的任一种，在第四方面的一种可能的实现方式中，所述过程号为所述第一D2D设备随机生成的。
上述过程号可以由第一D2D设备随机生成，以减少不同的第一D2D设备的不同SPS/SPT业务使用相同过程号的概率，提高第二D2D设备将上述SPS/SPT参数对应到SPS/SPT业务的准确率。
结合第四方面或其上述实现方式的任一种，在第四方面的一种可能的实现方式中，所述周期信息或所述指示信息所在的字段包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
通过在周期信息或指示信息所在的字段添加保留值，使得第二D2D设备可以获知当前的SPS/SPT业务是否终止，进一步获知传输该SPS/SPT业务的资源的使用情况。
结合第四方面或其上述实现方式的任一种，在第四方面的一种可能的实现方式中，所述第一SA信息中预留的信息位包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
通过在所述第一SA信息中预留的信息位添加保留值，使得第二D2D设 备可以获知当前的SPS/SPT业务是否终止，进一步获知传输该SPS/SPT业务的资源的使用情况。
结合第四方面或其上述实现方式的任一种，在第四方面的一种可能的实现方式中，所述数据包的发送时刻为t，所述D2D设备还包括：第二接收模块，用于接收所述第一D2D设备在第一时刻发送的第二SA信息，所述第一时刻为所述发送时刻t之前的任意时刻，所述第二SA信息用于指示所述第一D2D设备准备在所述发送时刻t发送所述数据包。
通过第一D2D设备在第一时刻发送第二SA信息，使得新加入该资源池的其他D2D设备能够正确获知资源的使用情况。
结合第四方面或其上述实现方式的任一种，在第四方面的一种可能的实现方式中，所述第一时刻为t-a时刻，其中，a为准备在所述发送时刻t发送数据的第一D2D设备对资源池使用情况的开始检测时刻。
通过第一D2D设备在t-a时刻发送第二SA信息，使得新加入该资源池的其他D2D设备能够正确获知资源的使用情况。
结合第四方面或其上述实现方式的任一种，在第四方面的一种可能的实现方式中，所述周期信息对应的比特位的取值为0表示当前传输的业务为非SPS/SPT业务。
通过周期信息对应的比特位的取值为0，表示当前传输的业务为非SPS/SPT业务，使得第二D2D设备获知第一D2D设备传输的当前业务是否为SPS/SPT业务，可以更具体获知资源的使用情况。
第五方面，本申请提供一种D2D设备，所述D2D设备为第一D2D设备，包括存储器、处理器、输入/输出接口、通信接口和总线系统。其中，存储器、处理器、输入/输出接口和通信接口通过总线系统相连，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，当所述指令被执行时，所述处理器通过所述通信接口执行第一方面的方法，并控制输入/输出接口接收输入的数据和信息，输出操作结果等数据。
第六方面，本申请提供一种D2D设备，所述D2D设备为第二D2D设备，包括存储器、处理器、输入/输出接口、通信接口和总线系统。其中，存储器、处理器、输入/输出接口和通信接口通过总线系统相连，该存储器用于存储指令，该处理器用于执行该存储器存储的指令，当所述指令被执行时，所述处理器通过所述通信接口执行第二方面的方法，并控制输入/输出接口接 收输入的数据和信息，输出操作结果等数据。
第七方面，本申请提供一种计算机可读存储介质，所述计算机可读存储介质用于存储D2D通信的程序代码，所述程序代码用于执行第一方面中的方法指令。
第八方面，本申请提供一种计算机可读存储介质，所述计算机可读存储介质用于存储D2D通信的程序代码，所述程序代码用于执行第二方面中的方法指令。
本申请提供一种D2D通信的方法和D2D设备，使得D2D设备(可以是第二D2D设备)在自主选择资源的情况下，获知其他D2D设备(可以是第一D2D设备)资源使用情况，以实现SPS/SPT业务的传输。
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示出了根据本发明实施例的D2D通信的方法的示意性流程图。
图2示出了根据本发明实施例的D2D设备的示意性框图。
图3示出了根据本发明另一实施例的D2D设备的示意性框图。
图4示出了根据本发明另一实施例的D2D设备的示意性框图。
图5示出了根据本发明另一实施例的D2D设备的示意性框图。
具体实施方式
应理解，本发明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、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、5G等。
还应理解，在本发明实施例中，D2D设备(可以为上述第一D2D设备 和/或上述第二D2D设备)包括但不限于用户设备(User Equipment，UE)、移动台(Mobile Station，MS)、移动终端(Mobile Terminal)、移动电话(Mobile Telephone)、手机(handset)、便携设备(portable equipment)、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)、具有无线通信功能的计算机等，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。
在一些实施例中，D2D通信可以指车对车(Vehicle to Vehicle，V2V)通信，或V2X通信。在V2X通信中，X可以泛指任何具有无线接收和发送能力的设备，例如但不限于慢速移动的无线装置，快速移动的车载设备，或是具有无线发射接收能力的网络控制节点。
本发明实施例中，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)，还可以是LTE中的演进型基站(evolved Node B，eNB或e-NodeB)，还可以是5G中的用于提供接入服务的接入点，本发明实施例并不限定。
图1示出了根据本发明实施例的D2D通信的方法的示意性流程图。图1所示的方法包括：
110，第一D2D设备生成数据包，所述数据包为SPS/SPT业务的数据包，所述数据包包括第一调度分配(Scheduling Assignment，SA)信息，所述第一SA信息携带所述SPS/SPT业务的周期信息。
具体地，上述第一SA信息可以用于指示第一D2D设备发送的数据的时频资源信息，调制与编码策略(Modulation and Coding Scheme，MCS)信息，跳频指示，定时提前量(Timing Advance，TA)和接收组ID等信息。其中，数据的时频资源信息可以采用时间资源图案(Time Resource Pattern，T-RPT)的形式，指示传输数据所占用的子帧。
应理解，上述SPS/SPT业务的周期信息可以是传输SPS/SPT业务的数据包所需的时间间隔，即SPS/SPT业务的周期；还可以是一个周期集合的索引号，也就是说，可以由协议预先配置一个周期集合，例如{0，10ms，20ms，40ms，100ms，200ms}，周期信息可以是对应于该集合的一个索引号(Index)，例如，当索引号为1时，对应于该周期集合中的10ms，该SPS/SPT业务的周期即为10ms，本发明对周期信息的表示形式不作具体限定。
还应理解，当上述周期信息为业务的周期时，该周期值可以为0，用于表示当前业务不是SPS/SPT业务。
还应理解，上述第二D2D设备可以是与第一D2D设备进行D2D通信的D2D设备，上述第一D2D设备可以传输SPS/SPT业务的数据包的发送端，上述第二D2D设备可以是传输SPS/SPT业务的数据包的接收端。
还应理解，上述第二D2D设备可以是一个D2D设备，也可以是多个D2D设备，本发明对此不作具体限定。
可选地，作为一个实施例，所述第一SA信息还包括指示信息，所述指示信息用于指示所述SPS/SPT业务中的未传输的数据所需的传输次数。
具体地，上述指示信息对应的比特位的取值可以为0，用于表示当前业务不是SPS/SPT业务。
可选地，作为一个实施例，所述第一SA信息还包括所述SPS/SPT业务的过程号。
具体地，一个第一D2D设备可以存在多个SPS/SPT业务，或者不同的D2D设备存在多个不同的SPS/SPT业务，每个SPS/SPT业务可以对应一个过程号(Process ID)，当其中某个SPS/SPT业务需要改变SPS/SPT的参数时(例如，周期或者未传输数据所需的传输次数)，Process ID可以使得第二D2D设备将SPS/SPT的参数和具体的SPS/SPT业务对应。
应理解，Process ID可以是第一D2D设备随机选取的值，以减少不同终端生成相同的Process ID的概率，本发明对该Process ID的选取方式不作具体限定。
可选地，作为一个实施例，所述周期信息或所述指示信息所在的字段包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
具体地，若当前的SPS/SPT业务变化时，周期信息或指示信息中包含的保留值可以表示后续不会再传输该过程号对应的SPS/SPT业务的数据包，还可以表示后续也不会传输该SA对应的SPS/SPT业务的数据包。
应理解，上述保留值还可以设置在SA信息中，可以在SA信息中预留专门的信息位(可替换地，比特位)，例如1bit，表示该保留值，本发明对该保留值的存储位置不作具体限定。
具体地，上述保留值还可以用在SPS/SPT业务的SPS/SPT参数(例如周期信息和/或所述指示信息)发生变化时，指示终止该SPS/SPT业务。
由于上述Process ID可以是由第一D2D设备随机选取的，无法保证不同的第一D2D设备选取的Process ID不存在重复的情况，为了避免不同终端的不同的SPS/SPT业务使用相同的Process ID，而引起第二D2D设备无法将改变后的SPS/SPT参数与SPS/SPT业务对应的情况，所述第一D2D设备可以在要改变当前SPS/SPT参数之前发送第三SA信息，所述第三SA信息用于指示终止传输与所述第三SA信息对应的SPS/SPT业务的数据包。
应理解，上述第三SA信息可以包括与上述第一SA信息的全部或至少部分信息，本发明对此不作具体限定。
需要说明的是，当第二D2D设备接收到上述第三SA信息之后，便获知该第三SA信息对应的资源被释放了，此时第二D2D设备可以在该资源上传输其他SPS/SPT业务，或者上述发送第三SA信息的第一D2D设备也可以在该资源上传输一个新的SPS/SPT业务。
120，所述第一D2D设备向第二D2D设备发送所述数据包。
通过第一D2D设备在SA信息中携带SPS/SPT业务的周期信息，使得第二D2D设备获知资源的使用情况，以实现第一D2D设备自主选择资源的情况下的SPS/SPT业务的传输，避免了多个D2D设备同时在相同的资源上传输SPS/SPT业务数据，从而产生冲突。
可选地，作为一个实施例，所述数据包的发送时刻为t，所述方法还包括：所述第一D2D设备在第一时刻发送第二SA信息，所述第一时刻为所述发送时刻t之前的任意时刻，所述第二SA信息用于指示所述第一D2D设备准备在所述发送时刻t发送所述数据包。
应理解，上述第二SA信息还可以包含上述第一SA信息中的全部内容或部分内容，本发明对该第二SA信息的内容不作具体限定。
可选地，作为一个实施例，所述第一时刻为t-a时刻，其中，a为准备在所述发送时刻t发送数据的第一D2D设备对资源池使用情况的开始检测时刻。
一般情况下，如果第一D2D设备准备在时刻t发送数据,那么第一D2D设备至少要在时刻[t-a，t-b]之间开始确定资源的使用情况。其中a>b≥0，t-a表示第一D2D设备确定资源是否空闲的开始检测时间，t-b表示第一D2D设备确定资源是否空闲的结束检测时间，并且对于所有D2D设备(包括第一D2D设备和第二D2D设备)来说，a和b的取值都是一致的。
若第一D2D设备的SPS/SPT业务的周期是t1，且t1＞a，该第一D2D 设备准备在t时刻发送该SPS/SPT业务的数据包，则该数据包的前一个数据包和后一个数据包，分别在t-t1时刻和t+t1时刻发送。此时，若新加入该资源池的D2D设备也准备在时刻t发送数据包，那么该新加入该资源池的D2D设备最早确定资源是否空闲的起始时刻是t-a,由于第一D2D设备的前一个数据包在t-t1时刻发送，此时新加入该资源池的D2D设备就无法获知第一D2D设备将在时刻t发送数据包，从而第一D2D设备和新加入该资源池的D2D设备可能在时刻t发生冲突。
为了避免上述冲突的情况，本发明实施例的D2D设备，需要在时刻t-a时刻先发送第二SA信息之后，再在时刻t发送包含第一SA信息的数据包。
一般情况下，如果第一D2D设备准备在时刻t选择(或重新选择)用于传输SPS/SPT业务的数据包的资源,那么第一D2D设备至少要在时刻[t-a，t-b]之间开始确定资源的使用情况。其中a>b≥0，t-a表示第一D2D设备确定资源是否空闲的开始检测时间，t-b表示第一D2D设备确定资源是否空闲的结束检测时间，并且对于所有第一D2D设备来说，a和b的取值都是一致的。该第一D2D设备可以在时刻t+c(c≥0且为整数)发送SPS/SPT业务的数据包对应的第一SA信息，并在时刻t+d(d≥c且为整数)发送该SPS/SPT业务的数据包。此时，为了避免新加入的D2D设备无法获知在t+c发送的第一SA信息，以及t+d时刻发送的SPS/SPT业务的数据包(如前文所述)，需要在时刻t-a时刻先发送第二SA信息之后，再在时刻t+c发送第一SA信息，在时刻t+d发送SPS/SPT业务的数据包。
需要指出的是，对于上述两种情况，在[t-a,t-b]之间发送第二SA信息，可以使得新加入第一D2D设备所属资源池的D2D设备，获知资源的使用情况。由于准备在时刻t传输SPS/SPT业务的数据包的D2D设备，确定资源是否空闲的开始检测时间是t-a时刻,所以在t-a时刻发送第二SA信息是最优的。
应理解，a，b，c，d，t可以以子帧(subframe)为单位，且均为整数，在LTE中一个子帧持续时间是1ms，本发明对a，b，c，d，t的单位不作具体限定。
可选地，作为一个实施例，所述周期信息对应的比特位的取值为0表示当前传输的业务为非SPS/SPT业务。
上文中结合图1，详细描述了图1示出了根据本发明实施例的D2D通信 的方法，下面将结合图2至图5，描述根据本发明实施例的D2D设备。应理解，为描述的方便和简洁，D2D设备进行D2D通信时的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
图2示出了根据本发明实施例的D2D设备的示意性框图。图2的D2D设备可以是第一D2D设备，该D2D设备200包括生成模块210和第一发送模块220。
生成模块210，用于生成数据包，所述数据包为半静态调度SPS/SPT业务的数据包，所述数据包包括第一调度分配SA信息，所述第一SA信息包括所述SPS/SPT业务的周期信息；
第一发送模块220，向第二D2D设备发送所述生成模块210生成的所述数据包。
通过第一D2D设备在SA信息中携带SPS/SPT业务的周期信息，使得第二D2D设备获知资源的使用情况，以实现第二D2D设备自主选择资源的情况下的SPS/SPT业务的传输，避免了多个D2D设备同时在相同的资源上传输SPS/SPT业务数据，从而产生冲突。
可选地，作为一个实施例，所述第一SA信息还包括指示信息，所述指示信息用于指示所述SPS/SPT业务中的未传输的数据所需的传输次数。
可选地，作为一个实施例，所述第一SA信息还包括所述SPS/SPT业务的过程号。
可选地，作为一个实施例，所述过程号为所述第一D2D设备随机生成的。
可选地，作为一个实施例，所述周期信息或所述指示信息所在的字段包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
可选地，作为一个实施例，所述第一SA信息中预留的信息位包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
可选地，作为一个实施例，所述数据包的发送时刻为t，所述D2D设备还包括：第二发送模块，用于在第一时刻发送第二SA信息，所述第一时刻为所述发送时刻t之前的任意时刻，所述第二SA信息用于指示所述第一D2D设备准备在所述发送时刻t发送所述数据包。
可选地，作为一个实施例，所述第一时刻为t-a时刻，其中，a为准备在所述发送时刻t发送数据的第一D2D设备对资源池使用情况的开始检测时刻。
可选地，作为一个实施例，所述周期信息对应的比特位的取值为0表示当前传输的业务为非SPS/SPT业务。
图3示出了根据本发明另一实施例的D2D设备的示意性框图。图3所示的D2D设备可以是第二D2D设备，该D2D设备300包括第一接收模块310、第一获取模块320和第二获取模块330。
第一接收模块310，用于接收第一D2D设备发送的数据包，所述数据包为半静态调度/半静态传输SPS/SPT业务的数据包，所述数据包包括第一调度分配SA信息，所述第一SA信息包括所述SPS/SPT业务的周期信息；
第一获取模块320，用于从所述第一接收模块310接收的所述数据包中获取所述第一SA信息；
第二获取模块330，用于从所述第一获取模块320获取的所述第一SA信息中获取所述SPS/SPT业务的周期信息。
通过第一D2D设备在SA信息中携带SPS/SPT业务的周期信息，使得第二D2D设备获知资源的使用情况，以实现第二D2D设备自主选择资源的情况下的SPS/SPT业务的传输，避免了多个D2D设备同时在相同的资源上传输SPS/SPT业务数据，从而产生冲突。
可选地，作为一个实施例，所述第一SA信息还包括指示信息，所述指示信息用于指示所述SPS/SPT业务中的未传输的数据所需的传输次数。
可选地，作为一个实施例，所述第一SA信息还包括所述SPS/SPT业务的过程号。
可选地，作为一个实施例，所述过程号为所述第一D2D设备随机生成的。
可选地，作为一个实施例，所述周期信息或所述指示信息所在的字段包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
可选地，作为一个实施例，所述第一SA信息中预留的信息位包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
可选地，作为一个实施例，所述数据包的发送时刻为t，所述D2D设备还包括：第二接收模块，用于接收所述第一D2D设备在第一时刻发送的第二SA信息，所述第一时刻为所述发送时刻t之前的任意时刻，所述第二SA信息用于指示所述第一D2D设备准备在所述发送时刻t发送所述数据包。
可选地，作为一个实施例，所述第一时刻为t-a时刻，其中，a为准备在 所述发送时刻t发送数据的第一D2D设备对资源池使用情况的开始检测时刻。
可选地，作为一个实施例，所述周期信息对应的比特位的取值为0表示当前传输的业务为非SPS/SPT业务。
图4示出了根据本发明另一实施例的D2D设备的示意性框图。图4所示的D2D设备400可以为第一D2D设备，包括：存储器410、处理器420、输入/输出接口430、通信接口440和总线系统450。其中，存储器410、处理器420、输入/输出接口430和通信接口440通过总线系统450相连，该存储器410用于存储指令，该处理器420用于执行该存储器410存储的指令，以控制输入/输出接口430接收输入的数据和信息，输出操作结果等数据，并控制通信接口440发送信号。
所述处理器420，用于生成数据包，所述数据包为半静态调度SPS/SPT业务的数据包，所述数据包包括第一调度分配SA信息，所述第一SA信息包括所述SPS/SPT业务的周期信息；
所述通信接口440，向第二D2D设备发送所述数据包。
应理解，在本发明实施例中，该处理器420可以采用通用的中央处理器(Central Processing Unit，CPU)，微处理器，应用专用集成电路(Application Specific Integrated Circuit，ASIC)，或者一个或多个集成电路，用于执行相关程序，以实现本发明实施例所提供的技术方案。
还应理解，通信接口440使用例如但不限于收发器一类的收发装置，来实现D2D设备400与其他设备或通信网络之间的通信。
该存储器410可以包括只读存储器和随机存取存储器，并向处理器420提供指令和数据。处理器420的一部分还可以包括非易失性随机存取存储器。例如，处理器420还可以存储设备类型的信息。
该总线系统450除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图4中将各种总线都标为总线系统450。
在实现过程中，上述方法的各步骤可以通过处理器420中的硬件的集成逻辑电路或者软件形式的指令完成。结合本发明实施例所公开的D2D通信的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的 存储介质中。该存储介质位于存储器410，处理器420读取存储器410中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
通过第一D2D设备在SA信息中携带SPS/SPT业务的周期信息，使得第二D2D设备获知资源的使用情况，以实现第二D2D设备自主选择资源的情况下的SPS/SPT业务的传输，避免了多个D2D设备同时在相同的资源上传输SPS/SPT业务数据，从而产生冲突。
可选地，作为一个实施例，所述第一SA信息还包括指示信息，所述指示信息用于指示所述SPS/SPT业务中的未传输的数据所需的传输次数。
可选地，作为一个实施例，所述第一SA信息还包括所述SPS/SPT业务的过程号。
可选地，作为一个实施例，所述过程号为所述D2D设备随机生成的。
可选地，作为一个实施例，所述周期信息或所述指示信息所在的字段包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
可选地，作为一个实施例，所述第一SA信息中预留的信息位包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
可选地，作为一个实施例，所述数据包的发送时刻为t，所述通信接口440，还用于在第一时刻发送第二SA信息，所述第一时刻为所述发送时刻t之前的任意时刻，所述第二SA信息用于指示所述第一D2D设备准备在所述发送时刻t发送所述数据包。
可选地，作为一个实施例，所述第一时刻为t-a时刻，其中，a为准备在所述时刻t发送数据的第一D2D设备对资源池使用情况的开始检测时刻。
可选地，作为一个实施例，所述周期信息对应的比特位的取值为0表示当前传输的业务为非SPS/SPT业务。
图5示出了根据本发明另一实施例的D2D设备的示意性框图。图5所示的D2D设备500可以为第二D2D设备，包括：存储器510、处理器520、输入/输出接口530、通信接口540和总线系统550。其中，存储器510、处理器520、输入/输出接口530和通信接口540通过总线系统550相连，该存储器510用于存储指令，该处理器520用于执行该存储器520存储的指令，以控制输入/输出接口530接收输入的数据和信息，输出操作结果等数据，并控制通信接口540发送信号。
所述通信接口540，用于接收第一D2D设备发送的数据包，所述数据包 为半静态调度/半静态传输SPS/SPT业务的数据包，所述数据包包括第一调度分配SA信息，所述第一SA信息包括所述SPS/SPT业务的周期信息；
所述处理器520，用于从所述数据包中获取所述第一SA信息；
所述处理器520，还用于从所述第一SA信息中获取所述SPS/SPT业务的周期信息。
应理解，在本发明实施例中，该处理器520可以采用通用的中央处理器(Central Processing Unit，CPU)，微处理器，应用专用集成电路(Application Specific Integrated Circuit，ASIC)，或者一个或多个集成电路，用于执行相关程序，以实现本发明实施例所提供的技术方案。
还应理解，通信接口540使用例如但不限于收发器一类的收发装置，来实现D2D设备500与其他设备或通信网络之间的通信。
该存储器510可以包括只读存储器和随机存取存储器，并向处理器520提供指令和数据。处理器520的一部分还可以包括非易失性随机存取存储器。例如，处理器520还可以存储设备类型的信息。
该总线系统550除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统550。
在实现过程中，上述方法的各步骤可以通过处理器520中的硬件的集成逻辑电路或者软件形式的指令完成。结合本发明实施例所公开的D2D通信的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器510，处理器520读取存储器510中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
通过第一D2D设备在SA信息中携带SPS/SPT业务的周期信息，使得第二D2D设备获知资源的使用情况，以实现第二D2D设备自主选择资源的情况下的SPS/SPT业务的传输，避免了多个D2D设备同时在相同的资源上传输SPS/SPT业务数据，从而产生冲突。
可选地，作为一个实施例，所述第一SA信息还包括指示信息，所述指示信息用于指示所述SPS/SPT业务中的未传输的数据所需的传输次数。
可选地，作为一个实施例，所述第一SA信息还包括所述SPS/SPT业务 的过程号。
可选地，作为一个实施例，所述过程号为所述第一D2D设备随机生成的。
可选地，作为一个实施例，所述周期信息或所述指示信息所在的字段包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
可选地，作为一个实施例，所述第一SA信息中预留的信息位包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
可选地，作为一个实施例，所述数据包的发送时刻为t，所述通信接口540，还用于接收所述第一D2D设备在第一时刻发送的第二SA信息，所述第一时刻为所述发送时刻t之前的任意时刻，所述第二SA信息用于指示所述第一D2D设备准备在所述发送时刻t发送所述数据包。
可选地，作为一个实施例，所述第一时刻为t-a时刻，其中，a为准备在所述发送时刻t发送数据的第一D2D设备对资源池使用情况的开始检测时刻。
可选地，作为一个实施例，所述周期信息对应的比特位的取值为0表示当前传输的业务为非SPS/SPT业务。
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、装置和模块的具体工作过程，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，所述模块的划分，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，例如多个模块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，装置或模块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模块可以是或者也可以不是物理上分开的，作 为模块显示的部件可以是或者也可以不是物理模块，即可以位于一个地方，或者也可以分布到多个网络模块上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能模块可以集成在一个处理模块中，也可以是各个模块单独物理存在，也可以两个或两个以上模块集成在一个模块中。
所述功能如果以软件功能模块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(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、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所述以权利要求的保护范围为准。

Claims (36)

  1. 一种设备对设备D2D通信的方法，其特征在于，包括：
    第一D2D设备生成数据包，所述数据包为半静态调度/半静态传输SPS/SPT业务的数据包，所述数据包包括第一调度分配SA信息，所述第一SA信息包括所述SPS/SPT业务的周期信息；
    所述第一D2D设备向第二D2D设备发送所述数据包。
  2. 如权利要求1所述的方法，其特征在于，所述第一SA信息还包括指示信息，所述指示信息用于指示所述SPS/SPT业务中的未传输的数据所需的传输次数。
  3. 如权利要求1或2所述的方法，其特征在于，所述第一SA信息还包括所述SPS/SPT业务的过程号。
  4. 如权利要求3所述的方法，其特征在于，所述过程号为所述第一D2D设备随机生成的。
  5. 如权利要求1-4中任一项所述的方法，其特征在于，所述周期信息或所述指示信息所在的字段包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
  6. 如权利要求1-4中任一项所述的方法，其特征在于，所述第一SA信息中预留的信息位包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
  7. 如权利要求1-6中任一项所述的方法，其特征在于，所述数据包的发送时刻为t，
    所述方法还包括：
    所述第一D2D设备在第一时刻发送第二SA信息，所述第一时刻为所述发送时刻t之前的任意时刻，所述第二SA信息用于指示所述第一D2D设备准备在所述发送时刻t发送所述数据包。
  8. 如权利要求7所述的方法，其特征在于，所述第一时刻为t-a时刻，其中，a为准备在所述发送时刻t发送数据的第一D2D设备对资源池使用情况的开始检测时刻。
  9. 如权利要求1-8中任一项所述的方法，其特征在于，所述周期信息对应的比特位的取值为0表示当前传输的业务为非SPS/SPT业务。
  10. 一种设备对设备D2D通信的方法，其特征在于，包括：
    第二D2D设备接收第一D2D设备发送的数据包，所述数据包为半静态 调度/半静态传输SPS/SPT业务的数据包，所述数据包包括第一调度分配SA信息，所述第一SA信息包括所述SPS/SPT业务的周期信息；
    所述第二D2D设备从所述数据包中获取所述第一SA信息；
    所述第二D2D设备从所述第一SA信息中获取所述SPS/SPT业务的周期信息。
  11. 如权利要求10所述的方法，其特征在于，所述第一SA信息还包括指示信息，所述指示信息用于指示所述SPS/SPT业务中的未传输的数据所需的传输次数。
  12. 如权利要求10或11所述的方法，其特征在于，所述第一SA信息还包括所述SPS/SPT业务的过程号。
  13. 如权利要求12所述的方法，其特征在于，所述过程号为所述第一D2D设备随机生成的。
  14. 如权利要求10-13中任一项所述的方法，其特征在于，所述周期信息或所述指示信息所在的字段包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
  15. 如权利要求10-13中任一项所述的方法，其特征在于，所述第一SA信息中预留的信息位包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
  16. 如权利要求10-15中任一项所述的方法，其特征在于，所述数据包的发送时刻为t，
    所述方法还包括：
    所述第二D2D设备接收所述第一D2D设备在第一时刻发送的第二SA信息，所述第一时刻为所述发送时刻t之前的任意时刻，所述第二SA信息用于指示所述第一D2D设备准备在所述发送时刻t发送所述数据包。
  17. 如权利要求16所述的方法，其特征在于，所述第一时刻为t-a时刻，其中，a为准备在所述发送时刻t发送数据的第一D2D设备对资源池使用情况的开始检测时刻。
  18. 如权利要求10-17中任一项所述的方法，其特征在于，所述周期信息对应的比特位的取值为0表示当前传输的业务为非SPS/SPT业务。
  19. 一种设备对设备D2D设备，其特征在于，所述D2D设备为第一D2D设备，包括：
    生成模块，用于生成数据包，所述数据包为半静态调度SPS/SPT业务的数据包，所述数据包包括第一调度分配SA信息，所述第一SA信息包括所述SPS/SPT业务的周期信息；
    第一发送模块，向第二D2D设备发送所述生成模块生成的所述数据包。
  20. 如权利要求19所述的D2D设备，其特征在于，所述第一SA信息还包括指示信息，所述指示信息用于指示所述SPS/SPT业务中的未传输的数据所需的传输次数。
  21. 如权利要求19或20所述的D2D设备，其特征在于，所述第一SA信息还包括所述SPS/SPT业务的过程号。
  22. 如权利要求21所述的D2D设备，其特征在于，所述过程号为所述D2D设备随机生成的。
  23. 如权利要求19-22中任一项所述的D2D设备，其特征在于，所述周期信息或所述指示信息所在的字段包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
  24. 如权利要求19-22中任一项所述的D2D设备，其特征在于，所述第一SA信息中预留的信息位包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
  25. 如权利要求19-24中任一项所述的D2D设备，其特征在于，所述数据包的发送时刻为t，
    所述D2D设备还包括：
    第二发送模块，用于在第一时刻发送第二SA信息，所述第一时刻为所述发送时刻t之前的任意时刻，所述第二SA信息用于指示所述第一D2D设备准备在所述发送时刻t发送所述数据包。
  26. 如权利要求25所述的D2D设备，其特征在于，所述第一时刻为t-a时刻，其中，a为准备在所述时刻t发送数据的第一D2D设备对资源池使用情况的开始检测时刻。
  27. 如权利要求19-26中任一项所述的D2D设备，其特征在于，所述周期信息对应的比特位的取值为0表示当前传输的业务为非SPS/SPT业务。
  28. 一种设备对设备D2D设备，其特征在于，所述D2D设备为第二D2D设备，包括：
    第一接收模块，用于接收第一D2D设备发送的数据包，所述数据包为 半静态调度/半静态传输SPS/SPT业务的数据包，所述数据包包括第一调度分配SA信息，所述第一SA信息包括所述SPS/SPT业务的周期信息；
    第一获取模块，用于从所述第一接收模块接收的所述数据包中获取所述第一SA信息；
    第二获取模块，用于从所述第一获取模块获取的所述第一SA信息中获取所述SPS/SPT业务的周期信息。
  29. 如权利要求28所述的D2D设备，其特征在于，所述第一SA信息还包括指示信息，所述指示信息用于指示所述SPS/SPT业务中的未传输的数据所需的传输次数。
  30. 如权利要求28或29所述的D2D设备，其特征在于，所述第一SA信息还包括所述SPS/SPT业务的过程号。
  31. 如权利要求30所述的D2D设备，其特征在于，所述过程号为所述第一D2D设备随机生成的。
  32. 如权利要求28-31中任一项所述的D2D设备，其特征在于，所述周期信息或所述指示信息所在的字段包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
  33. 如权利要求28-31中任一项所述的D2D设备，其特征在于，所述第一SA信息中预留的信息位包括保留值，所述保留值用于指示终止所述SPS/SPT业务。
  34. 如权利要求28-33中任一项所述的D2D设备，其特征在于，所述数据包的发送时刻为t，
    所述D2D设备还包括：
    第二接收模块，用于接收所述第一D2D设备在第一时刻发送的第二SA信息，所述第一时刻为所述发送时刻t之前的任意时刻，所述第二SA信息用于指示所述第一D2D设备准备在所述发送时刻t发送所述数据包。
  35. 如权利要求34所述的D2D设备，其特征在于，所述第一时刻为t-a时刻，其中，a为准备在所述发送时刻t发送数据的第一D2D设备对资源池使用情况的开始检测时刻。
  36. 如权利要求28-35中任一项所述的D2D设备，其特征在于，所述周期信息对应的比特位的取值为0表示当前传输的业务为非SPS/SPT业务。
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US11134475B2 (en) 2021-09-28
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CN113068255A (zh) 2021-07-02
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