WO2015058407A1 - 设备到设备d2d通信的方法及装置 - Google Patents

设备到设备d2d通信的方法及装置 Download PDF

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Publication number
WO2015058407A1
WO2015058407A1 PCT/CN2013/085970 CN2013085970W WO2015058407A1 WO 2015058407 A1 WO2015058407 A1 WO 2015058407A1 CN 2013085970 W CN2013085970 W CN 2013085970W WO 2015058407 A1 WO2015058407 A1 WO 2015058407A1
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Prior art keywords
communication signal
timing
signal resource
communication
resource
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PCT/CN2013/085970
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English (en)
French (fr)
Inventor
王键
Original Assignee
华为终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为终端有限公司 filed Critical 华为终端有限公司
Priority to PCT/CN2013/085970 priority Critical patent/WO2015058407A1/zh
Priority to CN201380080196.3A priority patent/CN105637949B/zh
Priority to EP13895831.9A priority patent/EP3046376B1/en
Priority to JP2016519930A priority patent/JP6319821B2/ja
Priority to US15/031,912 priority patent/US9749978B2/en
Priority to KR1020167010487A priority patent/KR101853750B1/ko
Publication of WO2015058407A1 publication Critical patent/WO2015058407A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • H04W56/0015Synchronization between nodes one node acting as a reference for the others
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • 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
    • H04W56/00Synchronisation arrangements
    • 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
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/005Discovery of network devices, e.g. terminals

Definitions

  • Embodiments of the present invention relate to communication technologies, and in particular, to a device to device (Device to)
  • D2D Method and device for communication. Background technique
  • D2D ProSe Device to Device Proximity Service
  • 3GPP 3D Generation Partnership Project
  • LTE Long Term Evolution
  • D2D ProSe includes D2D discovery and D2D direct communication.
  • D2D discovery refers to the process of user equipment identifying other user equipments existing in the vicinity through discovery signals, including discovery signal transmission and reception of discovery signals.
  • D2D direct communication refers to two user equipments. Direct communication between, including originating calls, channel measurements, channel feedback, resource scheduling, data transmission, and call completion.
  • Embodiments of the present invention provide a device-to-device D2D communication method and apparatus, so that users in different cells can use the device-to-device proximity service.
  • an embodiment of the present invention provides a device-to-device D2D communication method, where the method includes: acquiring, by a first device, a communication signal resource and timing information of the communication signal resource, where The communication signal resource is used for D2D communication; the first device receives the communication signal sent by the second device on the communication signal resource according to the communication signal information.
  • the acquiring, by the first device, timing information of the communication signal resource includes: acquiring, by the first device, a timing signal of the communication signal resource The first device determines timing information of the communication signal resource according to a timing signal of the communication signal resource.
  • the acquiring, by the first device, the timing signal of the communication signal resource includes: acquiring, by the first device The indication information of the timing signal of the communication signal resource; the first device acquiring the timing signal of the communication signal resource according to the indication information of the timing signal of the communication signal resource.
  • the acquiring, by the first device, the timing information of the communication signal resource includes: Determining a timing deviation of a timing of the communication signal resource relative to a timing of the reference timing signal, the first device acquiring the reference timing signal according to the indication information of the reference timing signal, according to the reference timing signal by the first device Determining timing information of the reference timing signal, the first device acquiring the communication signal according to timing information of the reference timing signal, and a timing deviation of a timing of the communication signal resource timing corresponding to the reference timing signal Resource timing information.
  • the reference timing signal is a timing signal of a communication signal resource of the first device.
  • the indication information of the timing signal is: a primary synchronization signal PSS And/or the indication information of the common synchronization signal SRS; and/or the indication information of the demodulation reference signal; and/or the cell identification information; and/ Or, indication information of the D2D primary synchronization signal PD2DSS; and/or indication information of the D2D secondary synchronization signal SD2DSS; and/or indication information of the D2D demodulation reference signal D2D-DMRS; and/or, D2D user equipment group D2D cluster Identification information.
  • the communication signal resource includes: a signal resource and a second communication signal resource; correspondingly, timing information of the communication signal resource
  • the device includes: timing information of the first communication signal resource and timing information of the second communication signal resource; the first device receives the second device on the communication signal resource according to the timing information of the communication signal resource And transmitting, by the first device, the communication signal sent by the second device on the first communication signal resource according to the timing information of the first communication signal resource, and sending the first a communication signal of the device; receiving, according to the timing information of the second communication signal resource, a communication signal sent by the second device on the second communication signal resource.
  • the D2D communication includes D2D discovery and/or D2D direct communication.
  • an embodiment of the present invention provides a device-to-device D2D communication method, where the method includes: a base station acquiring a communication signal resource and timing information of the communication signal resource, where the communication signal resource is used for D2D communication; Transmitting, by the base station, the timing information of the communication signal resource and the communication signal resource to the first device, where the first device receives the second device on the communication signal resource according to the timing information of the communication signal resource The communication signal sent.
  • the base station sends the communication signal resource and the timing information of the communication signal resource to the first device, where the first device is configured according to the first device
  • the timing information of the communication signal resource, receiving the communication signal sent by the second device on the communication signal resource includes: a timing at which the base station sends the communication signal resource and the communication signal resource to the first device And a signal, configured by the first device to determine timing information of the communication signal resource according to the timing signal of the communication signal resource, and receive the information on the communication signal resource according to timing information of the communication signal resource The communication signal sent by the second device.
  • the base station sends a timing signal of the communication signal resource to the first device, where Determining the timing information of the communication signal resource according to the timing signal of the communication signal resource, the method includes: the base station transmitting, to the first device, indication information of a timing signal of the communication signal resource, to provide The first device acquires a timing signal of the communication signal resource according to the indication information of the timing signal of the communication signal resource, and determines timing information of the communication signal resource according to the timing signal of the communication signal resource.
  • the base station sends the communication signal resource and the timing information of the communication signal resource to the first device, where Receiving, by the device, the communication signal sent by the second device on the communication signal resource according to the timing information of the communication signal resource, the method includes: the base station transmitting, to the first device, indication information of a reference timing signal, the communication a signal resource, and a time offset of a timing of the communication signal resource relative to a timing of the reference timing signal, for the first device to use the indication information of the reference timing signal and the timing of the communication signal resource relative to The timing deviation of the timing of the reference timing signal acquires timing information of the communication signal resource, and receives the communication signal sent by the second device on the communication signal resource by using the timing information of the communication signal resource.
  • the reference timing signal is a timing signal of a communication signal resource of the first device.
  • the indication information of the timing signal is: a primary synchronization signal PSS And/or the indication information of the common synchronization signal SRS; and/or the indication information of the demodulation reference signal; and/or the cell identification information; and/ Or, indication information of the D2D primary synchronization signal PD2DSS; and/or indication information of the D2D secondary synchronization signal SD2DSS; and/or indication information of the D2D demodulation reference signal D2D-DMRS; and/or, D2D user equipment group D2D cluster Identification information.
  • the communication signal resource includes: a signal resource and a second communication signal resource; correspondingly, the timing information of the communication signal resource includes: timing information of the first communication signal resource and timing information of the second communication signal resource;
  • the device sends the communication signal resource and the timing information of the communication signal resource, so that the first device receives the communication signal sent by the second device on the communication signal resource according to the timing information of the communication signal resource.
  • the base station includes: sending, by the base station, the first communication signal resource, the second communication signal resource, timing information of the first communication signal resource, and timing information of the second communication signal resource to the first device And for the first device to be on the first communication signal resource according to timing information of the first communication signal resource.
  • Receiving a communication signal sent by the second device transmitting a communication signal of the first device, and for the first device to receive on the second communication signal resource according to timing information of the second communication signal resource a communication signal sent by the second device.
  • the D2D communication includes D2D discovery and/or D2D direct communication.
  • the embodiment of the present invention provides a first device, where the first device includes: an acquiring module, configured to acquire a communication signal resource and timing information of the communication signal resource, where the communication signal resource is used by the device to And a transceiver module, configured to receive, according to timing information of the communication signal resource acquired by the acquiring module, a communication signal sent by the second device on the communication signal resource.
  • the acquiring module is specifically configured to: acquire a timing signal of the communication signal resource; determine, according to a timing signal of the communication signal resource, The timing information of the communication signal resource.
  • the acquiring module is specifically configured to: obtain indication information of a timing signal of the communication signal resource;
  • the indication information of the timing signal of the communication signal resource acquires a timing signal of the communication signal resource.
  • the acquiring module is specifically configured to: obtain indication information of a reference timing signal, and a timing of the communication signal resource with respect to the reference timing Determining the timing of the timing of the signal; obtaining the reference timing signal according to the indication information of the reference timing signal; determining timing information of the reference timing signal according to the reference timing signal; and timing information according to the reference timing signal
  • timing of the communication signal resource is equivalent to a time offset of a timing of the reference timing signal, and timing information of the communication signal resource is acquired.
  • the reference timing signal is a timing signal of a communication signal resource of the first device.
  • the indication information of the timing signal is: a primary synchronization signal PSS And/or the indication information of the common synchronization signal SRS; and/or the indication information of the demodulation reference signal; and/or the cell identification information; and/ Or, indication information of the D2D primary synchronization signal PD2DSS; and/or indication information of the D2D secondary synchronization signal SD2DSS; and/or indication information of the D2D demodulation reference signal D2D-DMRS; and/or, D2D user equipment group D2D cluster Identification information.
  • the communication signal resource includes: a signal resource and a second communication signal resource; correspondingly, the timing information of the communication signal resource includes: timing information of the first communication signal resource and timing information of the second communication signal resource; For receiving, according to the timing information of the first communication signal resource, a communication signal sent by the second device on the first communication signal resource, and transmitting a communication signal of the first device; Timing information of the second communication signal resource, and receiving the communication signal sent by the second device on the second communication signal resource.
  • the D2D communication includes D2D discovery and/or D2D direct communication.
  • the embodiment of the present invention provides a base station, where the base station includes: an acquiring module, configured to acquire a communication signal resource and timing information of the communication signal resource, where the communication signal resource is used for device-to-device D2D communication; a sending module, configured to send, to the first device, timing information of the communication signal resource and the communication signal resource acquired by the acquiring module, for the first device to use, according to the timing information of the communication signal resource, Receiving a communication signal sent by the second device on the communication signal resource.
  • an acquiring module configured to acquire a communication signal resource and timing information of the communication signal resource, where the communication signal resource is used for device-to-device D2D communication
  • a sending module configured to send, to the first device, timing information of the communication signal resource and the communication signal resource acquired by the acquiring module, for the first device to use, according to the timing information of the communication signal resource, Receiving a communication signal sent by the second device on the communication signal resource.
  • the sending module is configured to send, to the first device, a timing signal of the communication signal resource and the communication signal resource, to Determining, by the first device, timing information of the communication signal resource according to a timing signal of the communication signal resource, and receiving the second device on the communication signal resource according to timing information of the communication signal resource The communication signal sent.
  • the sending module is configured to send a timing signal of the communication signal resource to the first device.
  • the indication information wherein the first device acquires a timing signal of the communication signal resource according to the indication information of the timing signal of the communication signal resource, and determines the communication signal according to the timing signal of the communication signal resource. Timing information for resources.
  • the sending module is configured to send, to the first device, indication information and a reference information of the reference timing signal.
  • Communication signal resources, and timing of the communication signal resources relative to the reference Time offset of timing of the timing signal for the first device to acquire the communication signal according to the indication information of the reference timing signal and the time deviation of the timing of the communication signal resource with respect to the timing of the reference timing signal Timing information of the resource, and receiving the communication signal sent by the second device on the communication signal resource using the timing information of the communication signal resource.
  • the reference timing signal is a timing signal of a communication signal resource of the first device.
  • the indication information of the timing signal is: a primary synchronization signal PSS And/or the indication information of the common synchronization signal SRS; and/or the indication information of the demodulation reference signal; and/or the cell identification information; and/ Or, indication information of the D2D primary synchronization signal PD2DSS; and/or indication information of the D2D secondary synchronization signal SD2DSS; and/or indication information of the D2D demodulation reference signal D2D-DMRS; and/or, D2D user equipment group D2D cluster Identification information.
  • the communication signal resource includes: a signal resource and a second communication signal resource; correspondingly, the timing information of the communication signal resource includes: timing information of the first communication signal resource and timing information of the second communication signal resource; For transmitting, to the first device, the first communication signal resource, the second communication signal resource, timing information of the first communication signal resource, and timing information of the second communication signal resource, to Receiving, by the first device, the communication signal sent by the second device, the communication signal of the first device, and the communication signal on the first communication signal resource according to the timing information of the first communication signal resource; The first device receives, according to the timing information of the second communication signal resource, the second device to send on the second communication signal resource. Communication signal.
  • the D2D communication includes D2D discovery and/or D2D direct communication.
  • an embodiment of the present invention provides a first device, where the first device includes: a processor and a memory, where the memory stores an execution instruction, when the first device is running, the processor and the Communicating between memories, the processor executing the execution instruction to cause the first setting A method of performing device-to-device D2D communication provided by any embodiment of the present invention.
  • an embodiment of the present invention provides a base station, where the base station includes: a processor and a memory, where the memory stores an execution instruction, when the base station is running, the processor communicates with the memory, The processor executes the execution instructions such that the base station performs a device-to-device D2D communication method provided by any of the embodiments of the present invention.
  • a device-to-device D2D communication method and apparatus acquires timing information of a communication signal resource for D2D communication and the communication signal resource, and performs the communication according to timing information of the communication signal resource.
  • the communication signal sent by the second device is received on the signal resource, and synchronization (time synchronization and frequency synchronization) between the user equipments is implemented, so that users in different cells can use the device to the device proximity service.
  • FIG. 1 is a flowchart of a method for device-to-device D2D communication according to an embodiment of the present invention
  • FIG. 2 is another flowchart of a device-to-device D2D communication method according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a method of device-to-device D2D communication
  • FIG. 4 is a schematic structural diagram of a first device according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 6 is another schematic structural diagram of a first device according to an embodiment of the present disclosure.
  • FIG. 7 is another schematic structural diagram of a base station according to an embodiment of the present invention. detailed description
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • CDMA Code Division Multiple
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDM Orthogonal Frequency-Division Multiple Access
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the user equipment involved in the present application may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or a wireless modem. Other processing equipment.
  • the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal
  • RAN Radio Access Network
  • the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • a wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • the network device involved in the present application may be, for example, a base station, a radio network controller (RNC), or the like.
  • RNC radio network controller
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (evolved Node B in LTE).
  • e-NodeB may also be a cluster head of a user cluster in D2D communication, which is not limited in this application.
  • FIG. 1 is a flowchart of a method for device-to-device D2D communication according to an embodiment of the present invention. As shown in FIG. 1, the method in this embodiment includes:
  • the first device acquires communication signal resources and timing information of the communication signal resources, where the communication signal resources are used for D2D communication.
  • the first device receives, according to timing information of the communication signal resource, a communication signal sent by the second device on the communication signal resource.
  • the first device and the second device may be user equipments in different cells or different clusters, or may be different in the same cell or the same cluster.
  • the D2D communication is a device-to-device proximity service (D2D ProSe); the communication signal resource is used for D2D communication between user equipments; in practice, the communication signal resource may be identified by the communication signal resource To distinguish.
  • D2D ProSe device-to-device proximity service
  • the device-to-device D2D communication method acquires timing information of a communication signal resource for the D2D communication and the communication signal resource, and the communication signal resource according to the timing information of the communication signal resource Receiving the communication signal sent by the second device, realizing synchronization (time synchronization and frequency synchronization) between the user equipments of the D2D communication, so that users in different cells or users in the same cell but with different timing references can use the device to the device. service.
  • the D2D communication includes D2D discovery and/or D2D direct communication.
  • the serving cell of the first device is a first cell
  • the serving cell of the second device is a second cell
  • the first cell and the second cell may be different cells of the same cell and the same base station. , or a cell of a different base station.
  • the number of the second devices may be one or more, and the number of the second cells may be at least one.
  • the base station (the first base station) to which the first cell belongs acquires the cell under the control of the neighboring base station from the neighboring base station through a communication interface (for example, an X2 interface between two e-NodeBs) (including at least the second cell) a communication signal resource allocated to the user served by the user, and combined with the communication signal resources allocated by the respective cells under the control of the base station to which the first cell belongs (including at least the first cell) for the users served by the first cell Information of a communication signal resource; wherein the communication signal resource includes at least a communication signal resource allocated by the serving cell (the second cell) of the second device to a user served by the second cell (referred to as a second device Communication signal resources).
  • the first device acquires information of the communication signal resource from the first base station, and receives a communication signal sent by the second device on the communication signal resource according to the information of the communication signal resource.
  • the communication signal resource may include the first communication signal resource and the second communication signal resource according to the policy of the actual resource allocation.
  • the timing information of the communication signal resource may include: the first communication The timing information of the signal resource and the timing information of the second communication signal resource; wherein the timing information of the first communication signal resource and the timing information of the second communication signal resource may be the same timing information, or Is different timing information.
  • the first device may receive the communication signal sent by the second device on the first communication signal resource according to the timing information of the first communication signal resource, or may send the communication signal to the first communication signal resource. Transmitting a communication signal of the first device, but the first device may only receive the communication signal sent by the second device on the second communication signal resource according to timing information of the second communication signal resource .
  • the first communication signal resource may be a resource group, for example, may include communication resources a, b, c, and d, and the first device may receive the communication signal of the second device on the resource a, in the resource. Sending a communication signal of the first device on c.
  • Resources a and c are different resources, but all belong to the first communication signal resource. In this embodiment, by dividing the communication signal resource into the first communication signal resource that supports simultaneous transmission and reception and the second communication signal resource that only supports reception, resources required for receiving and transmitting signals in the D2D communication process are realized. Flexible configuration.
  • each of the second devices may share the same communication signal resource, and at this time, each of the second devices uses the same communication signal resource to perform D2D communication.
  • the timing is different.
  • the implementation manner of the information that the first device acquires the communication signal resource includes at least the following two modes:
  • the first device acquires a timing signal of the communication signal resource; and determines timing information of the communication signal resource according to a timing signal of the communication signal resource.
  • the method for obtaining the timing signal of the communication signal resource by the first device may be: the first device acquiring the indication information of the timing signal of the communication signal resource, and according to the timing signal of the communication signal resource The indication information acquires a timing signal of the communication signal resource.
  • Manner 2 the first device acquires the indication information of the reference timing signal, and the time deviation of the timing of the communication signal resource with respect to the timing of the reference timing signal; acquiring, according to the indication information of the reference timing signal, a timing signal according to the reference timing signal, determining timing information of the reference timing signal; timing information according to the reference timing signal, and timing of the communication signal resource corresponding to timing of the reference timing signal Deviation, obtaining timing information of the communication signal resource.
  • the first device acquires indication information of a reference timing signal from the first base station, and a time offset of a timing of the communication signal resource with respect to a timing of the reference timing signal, according to the reference timing signal Instructing information to obtain the reference timing signal, and further determining timing information of the reference timing signal; further, according to timing information of the reference timing signal, and timing of the communication signal resource is equivalent to timing of the reference timing signal Time deviation, obtaining timing information of the communication signal resource.
  • the reference timing signal is a common timing reference source, and may provide reference timing for communication signal resources of multiple cells.
  • the reference timing signal may be an independent timing reference source, and timing of communication signal resources of the first device.
  • Information ie, timing information of communication signal resources allocated by the first cell to the user it serves), timing information of communication signal resources of the second device, or other cells (ie, not the first cell and the second cell) Timing information of communication signal resources.
  • the indication information of the timing signal may be: indication information of a primary synchronization signal (PSS); and/or indication information of a secondary synchronization signal (Secondary Synchronization Signal, SSS for short); and/or And indication information of a Common Reference Signal (CRS); and/or indication information of the demodulation reference signal; and/or, cell identification information; and/or indication information of the PD2DSS; and/or,
  • FIG. 2 is another flowchart of a method for device-to-device D2D communication according to an embodiment of the present invention. As shown in FIG. 2, the method in this embodiment includes:
  • the base station acquires communication signal resources and timing information of the communication signal resources, where the communication signal resources are used for D2D communication.
  • the base station sends timing information of the communication signal resource and the communication signal resource to a first device, where the first device receives the communication signal resource according to timing information of the communication signal resource.
  • the communication signal sent by the second device is not limited to whether the communication signal is a Wi-Fi or Wi-Fi.
  • the base station is a base station to which the serving cell of the first device belongs; the base station acquires communication signal resources for D2D communication and timing information of the communication signal resource, and sends the timing information to the first device; The first device receives the communication signal sent by the second device on the communication signal resource according to the timing information of the communication signal resource.
  • the device-to-device D2D communication method provided by the embodiment of the present invention, by acquiring and providing the first device with communication signal resources for D2D communication and timing information of the communication signal resource, so that the first device according to the The timing information of the communication signal resource receives the communication signal sent by the second device on the communication signal resource, so that the D2D communication between the user equipments is synchronized, so that users in different cells can use the device to the device proximity service.
  • FIG. 3 is a signaling flowchart of a method for device-to-device D2D communication according to an embodiment of the present invention. The method is performed by the first device, the second device, and the first base station, where the first base station is a base station to which the serving cell (the first cell) of the first device belongs. As shown in FIG. 3, the method includes:
  • the first base station sends, to the first device, timing information of the communication signal resources and the communication signal resources allocated by the cells controlled by the base stations respectively for the D2D communication performed by the users served by the respective base stations.
  • the first device uses the timing information of the communication signal resource, and receives a communication signal sent by the second device on the communication signal resource.
  • FIG. 4 is a schematic structural diagram of a first device according to an embodiment of the present invention.
  • the first device 400 provided by this embodiment includes: an obtaining module 401 and a transceiver module 402, where:
  • the acquiring module 401 is configured to acquire communication signal resources and timing information of the communication signal resources, where the communication signal resources are used for D2D communication;
  • the transceiver module 402 is configured to receive, according to the timing information of the communication signal resource acquired by the acquiring module 401, a communication signal sent by the second device on the communication signal resource.
  • the first device 400 provided by the embodiment of the present invention may be used to perform the technical solution of the method embodiment shown in FIG. 1 , and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • the acquiring module 401 is specifically configured to: acquire a timing signal of the communication signal resource; and determine timing information of the communication signal resource according to the timing signal of the communication signal resource.
  • the acquiring module 401 is specifically configured to: obtain indication information of a timing signal of the communication signal resource; and acquire a timing signal of the communication signal resource according to the indication information of the timing signal of the communication signal resource.
  • the acquiring module 401 is specifically configured to: obtain indication information of a reference timing signal, and a time offset of a timing of the communication signal resource with respect to a timing of the reference timing signal; Determining the reference timing signal with reference to the indication information of the timing signal; determining timing information of the reference timing signal according to the reference timing signal; timing information according to the reference timing signal, and timing of the communication signal resource Obtaining timing information of the communication signal resource at a time offset of the timing of the reference timing signal.
  • the reference timing signal is a timing signal of a communication signal resource of the first device.
  • the indication information of the timing signal is: indication information of the primary synchronization signal PSS; and/or indication information of the secondary synchronization signal SSS; and/or indication information of the common pilot signal CRS; And/or indication information of the demodulation reference signal; and/or cell identification information; and/or indication information of the D2D primary synchronization signal PD2DSS; and/or indication information of the D2D secondary synchronization signal SD2DSS; and/or The indication information of the D2D demodulation reference signal D2D-DMRS; and/or the identification information of the D2D user equipment group D2D cluster.
  • the communication signal resource includes: a first communication signal resource and a second communication signal resource; correspondingly, the timing information of the communication signal resource includes: timing information of the first communication signal resource, and the And the transceiver module 402 is configured to receive, according to the timing information of the first communication signal resource, the communication signal sent by the second device on the first communication signal resource, And transmitting the communication signal of the first device; receiving, according to the timing information of the second communication signal resource, the communication signal sent by the second device on the second communication signal resource.
  • the D2D communication includes D2D discovery and/or D2D direct communication.
  • FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station 500 provided in this embodiment includes: an obtaining module 501 and a sending module 502, where:
  • the acquiring module 501 is configured to acquire communication signal resources and timing information of the communication signal resources, where the communication signal resources are used for D2D communication;
  • the sending module 502 is configured to send, to the first device, timing information of the communication signal resource and the communication signal resource acquired by the acquiring module 501, for the timing of the first device according to the communication signal resource And receiving, by the communication signal resource, a communication signal sent by the second device.
  • the base station 500 provided by the embodiment of the present invention may be used to perform the technical solution of the method embodiment shown in FIG. 2, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • the sending module 502 is specifically configured to send, to the first device, a timing signal of the communication signal resource and the communication signal resource, where the first device is configured according to the communication signal. a timing signal of the resource, determining timing information of the communication signal resource, and receiving, according to timing information of the communication signal resource, a communication signal sent by the second device on the communication signal resource.
  • the sending module 502 is specifically configured to send, to the first device, indication information of a timing signal of the communication signal resource, for the first device to use, according to the indication information of the timing signal of the communication signal resource, Obtaining a timing signal of the communication signal resource, and according to the communication A timing signal of the signal resource determines timing information of the communication signal resource.
  • the sending module 502 is specifically configured to send, to the first device, indication information of a reference timing signal, the communication signal resource, and a timing of the communication signal resource with respect to the reference. Time offset of timing of the timing signal, for the first device to acquire the communication signal according to the indication information of the reference timing signal and the time deviation of the timing of the communication signal resource with respect to the timing of the reference timing signal Timing information of the resource, and receiving the communication signal sent by the second device on the communication signal resource using the timing information of the communication signal resource.
  • the reference timing signal is a timing signal of a communication signal resource of the first device.
  • the indication information of the timing signal is: indication information of the primary synchronization signal PSS; and/or indication information of the secondary synchronization signal SSS; and/or indication information of the common pilot signal CRS; and/or demodulation Indication information of the reference signal; and/or, cell identification information; and/or indication information of the D2D primary synchronization signal PD2DSS; and/or indication information of the D2D secondary synchronization signal SD2DSS; and/or D2D demodulation reference signal D2D - indication information of the DMRS; and/or identification information of the D2D user equipment group D2D cluster.
  • the communication signal resource includes: a first communication signal resource and a second communication signal resource; correspondingly, the timing information of the communication signal resource includes: timing information of the first communication signal resource, and the And the sending module 502 is configured to: send, to the first device, the timing of the first communication signal resource, the second communication signal resource, and the first communication signal resource The information, and the timing information of the second communication signal resource, for the first device to receive, according to the timing information of the first communication signal resource, the second device to send on the first communication signal resource Transmitting, by the first device, a communication signal sent by the second device, according to the timing information of the second communication signal resource, signal.
  • the D2D communication includes D2D discovery and/or D2D direct communication.
  • FIG. 6 is another schematic structural diagram of a first device according to an embodiment of the present invention.
  • the first device 600 provided by the embodiment of the present invention includes: a processor 601, a memory 602, and a communication interface 603, further including a communication bus 604; the processor 601, the memory 602, and the communication interface 603 are connected to the communication bus 604. Connected to each other.
  • the processor 601 may be a general-purpose processor, including a central processing unit (CPU), and a network processor (NP Processor). Etc.; can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • the memory 602 is configured to store a program.
  • the program can include program code, the program code including computer operating instructions.
  • Memory 602 may include high speed RAM and may also include non-volatile memory, such as at least one disk storage.
  • the communication interface 603 is used for communication between the first device 600 and other devices; data packets can be received or transmitted through the communication interface.
  • the processor 601 When the first device 600 is in operation, the processor 601 is in communication with the memory 602, and the processor 601 executes a program stored in the memory 602, and performs a device-to-device D2D communication method provided by the embodiment of the present invention. :
  • the acquiring timing information of the communication signal resource includes: acquiring a timing signal of the communication signal resource; determining timing information of the communication signal resource according to a timing signal of the communication signal resource .
  • the acquiring the timing signal of the communication signal resource includes: acquiring indication information of a timing signal of the communication signal resource; and acquiring timing of the communication signal resource according to the indication information of the timing signal of the communication signal resource signal.
  • the acquiring timing information of the communication signal resource includes: acquiring indication information of a reference timing signal, and a time deviation of a timing of the communication signal resource with respect to a timing of the reference timing signal Obtaining the reference timing signal according to the indication information of the reference timing signal; determining timing information of the reference timing signal according to the reference timing signal; timing information according to the reference timing signal, and the communication signal
  • the timing of the resource is equivalent to the time offset of the timing of the reference timing signal, and the timing information of the communication signal resource is acquired.
  • the reference timing signal is a timing signal of a communication signal resource of the first device.
  • the indication information of the timing signal is: indication information of the primary synchronization signal PSS; and/or indication information of the secondary synchronization signal SSS; and/or indication information of the common pilot signal CRS; and/or demodulation Indication information of the reference signal; and/or, cell identification information; and/or indication information of the D2D primary synchronization signal PD2DSS; and/or indication information of the D2D secondary synchronization signal SD2DSS; And/or indication information of the D2D demodulation reference signal D2D-DMRS; and/or identification information of the D2D user equipment group D2D cluster.
  • the communication signal resource includes: a first communication signal resource and a second communication signal resource; correspondingly, the timing information of the communication signal resource includes: timing information of the first communication signal resource, and the The timing information of the second communication signal resource, the receiving, according to the timing information of the communication signal resource, the communication signal sent by the second device on the communication signal resource, including: according to the timing information of the first communication signal resource, Receiving, on the first communication signal resource, a communication signal sent by the second device, and transmitting a communication signal of the first device; and according to timing information of the second communication signal resource, in the second communication signal The communication signal sent by the second device is received on the resource.
  • the D2D communication includes D2D discovery and/or D2D direct communication.
  • FIG. 7 is another schematic structural diagram of a base station according to an embodiment of the present invention.
  • a base station 700 according to an embodiment of the present invention includes: a processor 701, a memory 702, and a communication interface 703, and further includes a communication bus 704.
  • the processor 701, the memory 702, and the communication interface 703 are connected to each other through a communication bus 704. .
  • the processor 701 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP Processor, etc.), or a digital signal processor (DSP), an application specific integrated circuit. (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete hardware components.
  • CPU central processing unit
  • NP Processor network processor
  • DSP digital signal processor
  • ASIC application specific integrated circuit.
  • FPGA off-the-shelf programmable gate array
  • the memory 702 is configured to store a program.
  • the program can include program code, the program code including computer operating instructions.
  • Memory 702 may include high speed RAM and may also include non-volatile memory, such as at least one disk memory.
  • the communication interface 703 is used for communication between the base station 700 and other devices; data packets can be received or transmitted through the communication interface.
  • the processor 701 When the base station 700 is running, the processor 701 is in communication with the memory 702, and the processor 701 executes a program stored in the memory 702 to perform the device-to-device D2D communication method provided by the embodiment of the present invention.
  • the method includes:
  • Timing information of the communication signal resource and the communication signal resource, where the communication signal resource is used for D2D communication And transmitting, by the first device, timing information of the communication signal resource and the communication signal resource, for the first
  • the device is in the communication according to timing information of the communication signal resource
  • the communication signal sent by the second device is received on the signal resource.
  • the transmitting, by the first device, timing information of the communication signal resource and the communication signal resource, for the first device to use the timing information of the communication signal resource, in the communication Receiving the communication signal sent by the second device on the signal resource including: sending, to the first device, a timing signal of the communication signal resource and the communication signal resource, where the first device is configured according to the communication signal resource a timing signal, determining timing information of the communication signal resource, and receiving, according to timing information of the communication signal resource, a communication signal sent by the second device on the communication signal resource.
  • the sending, to the first device, a timing signal of the communication signal resource, for the first device to determine, according to the timing signal of the communication signal resource, timing information of the communication signal resource including: The first device sends the indication information of the timing signal of the communication signal resource, so that the first device acquires a timing signal of the communication signal resource according to the indication information of the timing signal of the communication signal resource, and according to The timing signal of the communication signal resource determines timing information of the communication signal resource.
  • the transmitting, by the first device, the timing information of the communication signal resource and the communication signal resource, for the first device to use the timing information of the communication signal resource, in the Receiving the communication signal sent by the second device on the communication signal resource including: transmitting, to the first device, indication information of the reference timing signal, the communication signal resource, and a timing of the communication signal resource with respect to the reference timing signal Time offset of the timing, for the first device to acquire the communication signal resource according to the indication information of the reference timing signal and the time deviation of the timing of the communication signal resource with respect to the timing of the reference timing signal Timing information, and using the timing information of the communication signal resource to receive a communication signal transmitted by the second device on the communication signal resource.
  • the reference timing signal is a timing signal of a communication signal resource of the first device.
  • the indication information of the timing signal is: indication information of the primary synchronization signal PSS; and/or indication information of the secondary synchronization signal SSS; and/or indication information of the common pilot signal CRS; and/or demodulation Indication information of the reference signal; and/or, cell identification information; and/or indication information of the D2D primary synchronization signal PD2DSS; and/or indication information of the D2D secondary synchronization signal SD2DSS; and/or D2D demodulation reference signal D2D - indication information of the DMRS; and/or identification information of the D2D user equipment group D2D cluster.
  • the communication signal resource includes: a first communication signal resource and a second communication signal resource; correspondingly, the timing information of the communication signal resource includes: timing information of the first communication signal resource, and the The timing information of the communication signal resource is sent to the first device, and the timing information of the communication signal resource and the communication signal resource is sent to the first device, according to the timing information of the communication signal resource, Receiving the communication signal sent by the second device on the communication signal resource, including: sending, to the first device, the first communication signal resource, the second communication signal resource, timing information of the first communication signal resource, and The timing information of the second communication signal resource, so that the first device receives the communication signal sent by the second device on the first communication signal resource according to the timing information of the first communication signal resource, Transmitting, by the first device, a communication signal of the first device, according to timing information of the second communication signal resource, Receiving communication signals transmitted by the second device on the second communication signal resources.
  • the D2D communication includes D2D discovery and/or D2D direct communication.

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Abstract

本发明提供一种设备到设备D2D通信的方法及装置,其中,所述方法包括:第一设备获取通信信号资源及所述通信信号资源的定时信息,所述通信信号资源用于D2D通信;所述第一设备根据所述通信信号资源的定时信息,在所述通信信号资源上接收第二设备发送的通信信号。本发明提供的设备到设备D2D通信的方法及装置,可以实现D2D通信的用户设备之间的同步,使得处于不同小区的用户能够使用设备到设备临近服务。

Description

设备到设备 D2D通信的方法及装置
技术领域
本发明实施例涉及通信技术, 尤其涉及一种设备到设备 (Device to
Device, 简称 D2D) 通信的方法及装置。 背景技术
随着移动通信技术的快速发展, 在移动通信网络中提供设备到设备临近 服务 (Device to Device Proximity Service, 简称: D2D ProSe) 已经成为第三 代移动通信伙伴组织 (3rd Generation Partnership Project, 简称: 3GPP) 长期 演进 (Long Term Evolution, 简称 LTE) *** Rel.12的研究课题。 基于 LTE 网络的物理层提供 D2D ProSe极大地丰富了 LTE网络的业务范围。 D2D ProSe 包含 D2D发现和 D2D直接通信, D2D发现是指用户设备通过发现信号识别 附近存在的其他用户设备的过程, 包括发现信号的发送和发现信号的接收; D2D直接通信是指两个用户设备之间的直接通信,包括发起呼叫、信道测量、 信道反馈、 资源调度、 数据传输、 以及呼叫完成等过程。
为了实现用户设备之间的 D2D发现和 D2D直接通信时, 需要保证用户 设备之间的时间同步和频率同步。 现有的移动通信***中, 用户设备在和服 务小区通信时,仅需要知道并跟踪服务小区的的同步信号;但是在 D2D ProSe 中, 处于不同小区的两个或多个用户设备, 仅分别跟踪各自对应的服务小区 的同步信号, 只能保证各用户设备与其对应的服务小区的同步, 但是, 并不 能保证各用户设备之间的时间同步和频率同步, 进而无法保证用户设备之间 的 D2D ProSe。
发明内容
本发明实施例提供一种设备到设备 D2D通信的方法及装置, 以使处于不 同小区的用户能够使用设备到设备临近服务。
第一方面, 本发明实施例提供一种设备到设备 D2D通信的方法, 所述 方法包括: 第一设备获取通信信号资源及所述通信信号资源的定时信息, 所 述通信信号资源用于 D2D通信;所述第一设备根据所述通信信号资 ¾ 1定时 信息, 在所述通信信号资源上接收第二设备发送的通信信号。
根据第一方面, 在第一方面的第一种可能的实现方式中, 所述第一设备 获取所述通信信号资源的定时信息, 包括: 所述第一设备获取所述通信信号 资源的定时信号; 所述第一设备根据所述通信信号资源的定时信号, 确定所 述通信信号资源的定时信息。
根据第一方面的第一种可能的实现方式, 在第一方面的第二种可能的实 现方式中, 所述第一设备获取所述通信信号资源的定时信号, 包括: 所述第 一设备获取所述通信信号资源的定时信号的指示信息; 所述第一设备根据所 述通信信号资源的定时信号的指示信息,获取所述通信信号资源的定时信号。
根据第一方面, 在第一方面的第三种可能的实现方式中, 所述第一设备 获取所述通信信号资源的定时信息, 包括: 所述第一设备获取参考定时信号 的指示信息 以及所述通信信号资源的定时相对于所述参考定时信号的定时 的时间偏差 所述第一设备根据所述参考定时信号的指示信息, 获取所述参 考定时信号 所述第一设备根据所述参考定时信号, 确定所述参考定时信号 的定时信息 所述第一设备根据所述参考定时信号的定时信息, 以及所述通 信信号资源 定时相当于所述参考定时信号的定时的时间偏差, 获取所述通 信信号资源 定时信息。
根据第一方面的第三种可能的实现方式, 在第一方面的第四种可能的实 现方式中, 所述参考定时信号为所述第一设备的通信信号资源的定时信号。
根据第一方面的第二种至第四种可能的实现方式中的任意一种, 在第一 方面的第五种可能的实现方式中, 所述定时信号的指示信息为: 主同步信号 PSS的指示信息; 和 /或, 辅同步信号 SSS的指示信息; 和 /或, 公共导频信号 CRS的指示信息; 和 /或, 解调参考信号的指示信息; 和 /或, 小区标识信息; 和 /或, D2D主同步信号 PD2DSS的指示信息;和 /或, D2D辅同步信号 SD2DSS 的指示信息;和 /或, D2D解调参考信号 D2D-DMRS的指示信息;和 /或, D2D 用户设备组 D2D cluster的标识信息。
根据第一方面、 第一方面的第一种至第五种可能的实现方式中的任意一 种, 在第一方面的第六种可能的实现方式中, 所述通信信号资源包括: 第一 通信信号资源和第二通信信号资源; 相应的, 所述通信信号资源的定时信息 包括: 所述第一通信信号资源的定时信息和所述第二通信信号资源的定时信 息; 所述第一设备根据所述通信信号资源的定时信息, 在所述通信信号资源 上接收第二设备发送的通信信号, 包括: 所述第一设备根据所述第一通信信 号资源的定时信息, 在所述第一通信信号资源上接收所述第二设备发送的通 信信号, 并发送所述第一设备的通信信号; 根据所述第二通信信号资源的定 时信息, 在所述第二通信信号资源上接收所述第二设备发送的通信信号。
根据第一方面、 第一方面的第一种至第六种可能的实现方式中的任意一 种, 在第一方面的第七种可能的实现方式中, 所述 D2D通信包括 D2D发现 和 /或 D2D直接通信。
第二方面, 本发明实施例提供一种设备到设备 D2D通信的方法, 所述 方法包括: 基站获取通信信号资源及所述通信信号资源的定时信息, 所述通 信信号资源用于 D2D通信;所述基站向第一设备发送所述通信信号资源和所 述通信信号资源的定时信息, 以供所述第一设备根据所述通信信号资源的定 时信息, 在所述通信信号资源上接收第二设备发送的通信信号。
根据第二方面, 在第二方面的第一种可能的实现方式中, 所述基站向第 一设备发送所述通信信号资源和所述通信信号资源的定时信息, 以供所述第 一设备根据所述通信信号资源的定时信息, 在所述通信信号资源上接收第二 设备发送的通信信号, 包括: 所述基站向所述第一设备发送所述通信信号资 源和所述通信信号资源的定时信号, 以供所述第一设备根据所述通信信号资 源的定时信号, 确定所述通信信号资源的定时信息, 并根据所述通信信号资 源的定时信息, 在所述通信信号资源上接收所述第二设备发送的通信信号。
根据第二方面的第一种可能的实现方式, 在第二方面的第二种可能的实 现方式中, 所述基站向所述第一设备发送所述通信信号资源的定时信号, 以 供所述第一设备根据所述通信信号资源的定时信号, 确定所述通信信号资源 的定时信息, 包括: 所述基站向所述第一设备发送所述通信信号资源的定时 信号的指示信息, 以供所述第一设备根据所述通信信号资源的定时信号的指 示信息, 获取所述通信信号资源的定时信号, 并根据所述通信信号资源的定 时信号, 确定所述通信信号资源的定时信息。
根据第二方面, 在第二方面的第三种可能的实现方式中, 所述基站向第 一设备发送所述通信信号资源和所述通信信号资源的定时信息, 以供所述第 一设备根据所述通信信号资源的定时信息, 在所述通信信号资源上接收第二 设备发送的通信信号, 包括: 所述基站向所述第一设备发送参考定时信号的 指示信息、 所述通信信号资源、 以及所述通信信号资源的定时相对于所述参 考定时信号的定时的时间偏差, 以供所述第一设备根据所述参考定时信号的 指示信息以及所述通信信号资源的定时相对于所述参考定时信号的定时的时 间偏差, 获取所述通信信号资源的定时信息, 并使用所述通信信号资源的定 时信息在所述通信信号资源上接收第二设备发送的通信信号。
根据第二方面的第三种可能的实现方式, 在第二方面的第四种可能的实 现方式中, 所述参考定时信号为所述第一设备的通信信号资源的定时信号。
根据第二方面的第二种至第四种可能的实现方式中的任意一种, 在第二 方面的第五种可能的实现方式中, 所述定时信号的指示信息为: 主同步信号 PSS的指示信息; 和 /或, 辅同步信号 SSS的指示信息; 和 /或, 公共导频信号 CRS的指示信息; 和 /或, 解调参考信号的指示信息; 和 /或, 小区标识信息; 和 /或, D2D主同步信号 PD2DSS的指示信息;和 /或, D2D辅同步信号 SD2DSS 的指示信息;和 /或, D2D解调参考信号 D2D-DMRS的指示信息;和 /或, D2D 用户设备组 D2D cluster的标识信息。
根据第二方面、 第二方面的第一种至第五种可能的实现方式中的任意一 种, 在第二方面的第六种可能的实现方式中, 所述通信信号资源包括: 第一 通信信号资源和第二通信信号资源; 相应的, 所述通信信号资源的定时信息 包括: 所述第一通信信号资源的定时信息和所述第二通信信号资源的定时信 息; 所述基站向第一设备发送所述通信信号资源和所述通信信号资源的定时 信息, 以供所述第一设备根据所述通信信号资源的定时信息, 在所述通信信 号资源上接收第二设备发送的通信信号, 包括: 所述基站向所述第一设备发 送所述第一通信信号资源、 所述第二通信信号资源、 所述第一通信信号资源 的定时信息、 以及所述第二通信信号资源的定时信息, 以供所述第一设备根 据所述第一通信信号资源的定时信息, 在所述第一通信信号资源上接收所述 第二设备发送的通信信号、 发送所述第一设备的通信信号, 并供所述第一设 备根据所述第二通信信号资源的定时信息, 在所述第二通信信号资源上接收 所述第二设备发送的通信信号。
根据第二方面、 第二方面的第一种至第六种可能的实现方式中的任意一 种, 在第二方面的第七种可能的实现方式中, 所述 D2D通信包括 D2D发现 和 /或 D2D直接通信。
第三方面, 本发明实施例提供一种第一设备, 所述第一设备包括: 获 取模块, 用于获取通信信号资源及所述通信信号资源的定时信息, 所述通信 信号资源用于设备到设备 D2D通信; 收发模块, 用于根据所述获取模块获取 的所述通信信号资源的定时信息, 在所述通信信号资源上接收第二设备发送 的通信信号。
根据第三方面,在第三方面的第一种可能的实现方式中, 所述获取模块, 具体用于: 获取所述通信信号资源的定时信号; 根据所述通信信号资源的定 时信号, 确定所述通信信号资源的定时信息。
根据第三方面的第一种可能的实现方式, 在第三方面的第二种可能的实 现方式中, 所述获取模块, 具体用于: 获取所述通信信号资源的定时信号的 指示信息; 根据所述通信信号资源的定时信号的指示信息, 获取所述通信信 号资源的定时信号。
根据第三方面,在第三方面的第三种可能的实现方式中, 所述获取模块, 具体用于: 获取参考定时信号的指示信息, 以及所述通信信号资源的定时相 对于所述参考定时信号的定时的时间偏差; 根据所述参考定时信号的指示信 息, 获取所述参考定时信号; 根据所述参考定时信号, 确定所述参考定时信 号的定时信息; 根据所述参考定时信号的定时信息, 以及所述通信信号资源 的定时相当于所述参考定时信号的定时的时间偏差, 获取所述通信信号资源 的定时信息。
根据第三方面的第三种可能的实现方式, 在第三方面的第四种可能的实 现方式中, 所述参考定时信号为所述第一设备的通信信号资源的定时信号。
根据第三方面的第二种至第四种可能的实现方式中的任意一种, 在第三 方面的第五种可能的实现方式中, 所述定时信号的指示信息为: 主同步信号 PSS的指示信息; 和 /或, 辅同步信号 SSS的指示信息; 和 /或, 公共导频信号 CRS的指示信息; 和 /或, 解调参考信号的指示信息; 和 /或, 小区标识信息; 和 /或, D2D主同步信号 PD2DSS的指示信息;和 /或, D2D辅同步信号 SD2DSS 的指示信息;和 /或, D2D解调参考信号 D2D-DMRS的指示信息;和 /或, D2D 用户设备组 D2D cluster的标识信息。 根据第三方面、 第三方面的第一种至第五种可能的实现方式中的任意一 种, 在第三方面的第六种可能的实现方式中, 所述通信信号资源包括: 第一 通信信号资源和第二通信信号资源; 相应的, 所述通信信号资源的定时信息 包括: 所述第一通信信号资源的定时信息和所述第二通信信号资源的定时信 息; 所述收发模块, 具体用于: 根据所述第一通信信号资源的定时信息, 在 所述第一通信信号资源上接收所述第二设备发送的通信信号, 并发送所述第 一设备的通信信号; 根据所述第二通信信号资源的定时信息, 在所述第二通 信信号资源上接收所述第二设备发送的通信信号。
根据第三方面、 第三方面的第一种至第六种可能的实现方式中的任意一 种, 在第三方面的第七种可能的实现方式中, 所述 D2D通信包括 D2D发现 和 /或 D2D直接通信。
第四方面, 本发明实施例提供一种基站, 所述基站包括: 获取模块, 用于获取通信信号资源及所述通信信号资源的定时信息, 所述通信信号资源 用于设备到设备 D2D通信; 发送模块, 用于向第一设备发送所述获取模块获 取的所述通信信号资源和所述通信信号资源的定时信息, 以供所述第一设备 根据所述通信信号资源的定时信息, 在所述通信信号资源上接收第二设备发 送的通信信号。
根据第四方面,在第四方面的第一种可能的实现方式中, 所述发送模块, 具体用于向所述第一设备发送所述通信信号资源和所述通信信号资源的定时 信号, 以供所述第一设备根据所述通信信号资源的定时信号, 确定所述通信 信号资源的定时信息, 并根据所述通信信号资源的定时信息, 在所述通信信 号资源上接收所述第二设备发送的通信信号。
根据第四方面的第一种可能的实现方式, 在第四方面的第二种可能的实 现方式中, 所述发送模块, 具体用于向所述第一设备发送所述通信信号资源 的定时信号的指示信息, 以供所述第一设备根据所述通信信号资源的定时信 号的指示信息, 获取所述通信信号资源的定时信号, 并根据所述通信信号资 源的定时信号, 确定所述通信信号资源的定时信息。
根据第四方面的第一种可能的实现方式, 在第四方面的第三种可能的实 现方式中, 所述发送模块, 具体用于向所述第一设备发送参考定时信号的指 示信息、 所述通信信号资源、 以及所述通信信号资源的定时相对于所述参考 定时信号的定时的时间偏差, 以供所述第一设备根据所述参考定时信号的指 示信息以及所述通信信号资源的定时相对于所述参考定时信号的定时的时间 偏差, 获取所述通信信号资源的定时信息, 并使用所述通信信号资源的定时 信息在所述通信信号资源上接收第二设备发送的通信信号。
根据第四方面的第三种可能的实现方式, 在第四方面的第四种可能的实 现方式中, 所述参考定时信号为所述第一设备的通信信号资源的定时信号。
根据第四方面的第二种至第四种可能的实现方式中的任意一种, 在第四 方面的第五种可能的实现方式中, 所述定时信号的指示信息为: 主同步信号 PSS的指示信息; 和 /或, 辅同步信号 SSS的指示信息; 和 /或, 公共导频信号 CRS的指示信息; 和 /或, 解调参考信号的指示信息; 和 /或, 小区标识信息; 和 /或, D2D主同步信号 PD2DSS的指示信息;和 /或, D2D辅同步信号 SD2DSS 的指示信息;和 /或, D2D解调参考信号 D2D-DMRS的指示信息;和 /或, D2D 用户设备组 D2D cluster的标识信息。
根据第四方面、 第四方面的第一种至第五种可能的实现方式中的任意一 种, 在第四方面的第六种可能的实现方式中, 所述通信信号资源包括: 第一 通信信号资源和第二通信信号资源; 相应的, 所述通信信号资源的定时信息 包括: 所述第一通信信号资源的定时信息和所述第二通信信号资源的定时信 息; 所述发送模块, 具体用于: 向所述第一设备发送所述第一通信信号资源、 所述第二通信信号资源、 所述第一通信信号资源的定时信息、 以及所述第二 通信信号资源的定时信息, 以供所述第一设备根据所述第一通信信号资源的 定时信息, 在所述第一通信信号资源上接收所述第二设备发送的通信信号、 发送所述第一设备的通信信号, 并供所述第一设备根据所述第二通信信号资 源的定时信息, 在所述第二通信信号资源上接收所述第二设备发送的通信信 号。
根据第四方面、 第四方面的第一种至第六种可能的实现方式中的任意一 种, 在第四方面的第七种可能的实现方式中, 所述 D2D通信包括 D2D发现 和 /或 D2D直接通信。
第五方面, 本发明实施例提供一种第一设备, 所述第一设备包括: 处 理器和存储器, 所述存储器存储执行指令, 当所述第一设备运行时, 所述处 理器与所述存储器之间通信, 所述处理器执行所述执行指令使得所述第一设 备执行本发明任意实施例所提供的设备到设备 D2D通信的方法。
第六方面, 本发明实施例提供一种基站, 所述基站包括: 包括处理器 和存储器, 所述存储器存储执行指令, 当所述基站运行时, 所述处理器与所 述存储器之间通信, 所述处理器执行所述执行指令使得所述基站执行本发明 任意实施例所提供的设备到设备 D2D通信的方法。
本发明实施例提供的设备到设备 D2D通信的方法及装置,通过获取用于 D2D通信的通信信号资源及所述通信信号资源的定时信息, 并根据所述通信 信号资源的定时信息在所述通信信号资源上接收第二设备发送的通信信号, 实现了用户设备之间的同步 (时间同步和频率同步) , 使得处于不同小区的 用户能够使用设备到设备临近服务。 附图说明
图 1为本发明实施例提供的设备到设备 D2D通信的方法的流程图; 图 2为本发明实施例提供的设备到设备 D2D通信的方法的另一流程图; 图 3为本发明实施例提供的设备到设备 D2D通信的方法的信令流程图; 图 4为本发明实施例提供的第一设备的结构示意图;
图 5为本发明实施例提供的基站的结构示意图;
图 6为本发明实施例提供的第一设备的另一结构示意图;
图 7为本发明实施例提供的基站的另一结构示意图。 具体实施方式
本文中描述的技术可用于各种通信***, 例如当前 2G, 3G通信***和 下一代通信***, 例如全球移动通信*** (GSM, Global System for Mobile communications ) , 码分多址 (CDMA, Code Division Multiple Access )***, 时分多址 (TDMA , Time Division Multiple Access ) ***, 宽带码分多址 (WCDMA, Wideband Code Division Multiple Access Wireless ) , 频分多址 ( FDMA , Frequency Division Multiple Addressing ) ***, 正交步页分多址 ( OFDM A, Orthogonal Frequency-Division Multiple Access ) ***, 单载波 FDMA (SC-FDMA) ***, 通用分组无线业务(GPRS , General Packet Radio Service) ***, 长期演进(LTE, Long Term Evolution )***, 以及其他此类 通信***。
本申请中涉及的用户设备, 可以是无线终端也可以是有线终端, 无线终 端可以是指向用户提供语音和 /或数据连通性的设备, 具有无线连接功能的手 持式设备、 或连接到无线调制解调器的其他处理设备。 无线终端可以经无线 接入网(例如, RAN, Radio Access Network)与一个或多个核心网进行通信, 无线终端可以是移动终端, 如移动电话 (或称为 "蜂窝" 电话) 和具有移动 终端的计算机, 例如, 可以是便携式、 袖珍式、 手持式、 计算机内置的或者 车载的移动装置, 它们与无线接入网交换语言和 /或数据。 例如, 个人通信业 务 (PCS, Personal Communication Service) 电话、 无黾电话、 会话发起协议 (SIP) 话机、 无线本地环路 (WLL, Wireless Local Loop ) 站、 个人数字助 理 (PDA, Personal Digital Assistant) 等设备。 无线终端也可以称为***、 订 户单元( Subscriber Unit )、订户站( Subscriber Station ),移动站( Mobile Station )、 移动台 (Mobile) 、 远程站 (Remote Station) 、 接入点 (Access Point) 、 远 程终端 (Remote Terminal) 、 接入终端(Access Terminal) 、 用户终端 (User Terminal) 、 用户代理 (User Agent) 、 用户设备 (User Device) 、 或用户装 备 ( User Equipment ) 。
本申请中涉及的网络设备, 可以是例如: 基站、 无线网络控制器(Radio Network Controller, RNC) 等。
基站 (例如, 接入点) 可以是 GSM 或 CDMA 中的基站 (BTS, Base Transceiver Station ), 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 , 简称 e-NodeB ) , 也可以是 D2D通信中 一个用户簇的簇头 (cluster head) , 本申请并不限定。
图 1为本发明实施例提供的设备到设备 D2D通信的方法的流程图。如图 1所示, 本实施例的方法包括:
101、第一设备获取通信信号资源及所述通信信号资源的定时信息, 所述 通信信号资源用于 D2D通信。
102、所述第一设备根据所述通信信号资源的定时信息, 在所述通信信号 资源上接收第二设备发送的通信信号。
具体地, 所述第一设备和所述第二设备可以是处于不同小区或不同簇 (cluster) 的用户设备, 也可以是处于同一小区或相同簇 (cluster) 的不同用 户设备; 所述 D2D通信为设备到设备临近服务 (D2D ProSe) ; 所述通信信 号资源用于用户设备之间进行 D2D通信; 实际中, 所述通信信号资源可以通 过所述通信信号资源的标识来区分。
本发明实施例提供的设备到设备 D2D通信的方法, 通过获取用于 D2D 通信的通信信号资源及所述通信信号资源的定时信息, 并根据所述通信信号 资源的定时信息在所述通信信号资源上接收第二设备发送的通信信号, 实现 了 D2D通信的用户设备之间的同步(时间同步和频率同步) , 使得处于不同 小区的用户或者相同小区但是不同定时参考的用户能够使用设备到设备临近 服务。
在上述实施例的基础上,所述 D2D通信包括 D2D发现和 /或 D2D直接通 信。 实际中, 所述第一设备的服务小区为第一小区, 所述第二设备的服务小 区为第二小区, 所述第一小区和所述第二小区可以是同一小区、 同一基站的 不同小区、 或者不同基站的小区。 可以理解的是, 所述第二设备的数目可以 是一个或多个, 所述第二小区的数目可以是至少一个。
所述第一小区所属的基站(第一基站),通过通信接口(例如两个 e-NodeB 之间的 X2接口) 从临近基站获取所述临近基站控制下的小区 (至少包括所 述第二小区) 为各自所服务的用户分配的通信信号资源, 并结合所述第一小 区所属的基站控制下的各小区 (至少包括所述第一小区) 为各自所服务的用 户分配的通信信号资源, 获取通信信号资源的信息; 其中, 通信信号资源至 少包括所述第二设备的服务小区 (所述第二小区) 为所述第二小区所服务的 用户分配的通信信号资源 (简称为第二设备的通信信号资源) 。 所述第一设 备从所述第一基站获取所述通信信号资源的信息, 并根据所述通信信号资源 的信息, 在所述通信信号资源上接收所述第二设备发送的通信信号。
可选的, 根据实际中资源分配的策略, 所述通信信号资源可以包括第一 通信信号资源和第二通信信号资源, 相应的, 所述通信信号资源的定时信息 可以包括: 所述第一通信信号资源的定时信息和所述第二通信信号资源的定 时信息; 其中, 所述第一通信信号资源的定时信息和所述第二通信信号资源 的定时信息, 可以是相同的定时信息, 也可以是不同的定时信息。 所述第一 设备根据所述第一通信信号资源的定时信息, 可以在所述第一通信信号资源 上接收所述第二设备发送的通信信号, 也可以在所述第一通信信号资源上发 送所述第一设备的通信信号, 但是, 所述第一设备根据所述第二通信信号资 源的定时信息, 在所述第二通信信号资源上仅可以接收所述第二设备发送的 通信信号。 其中, 所述第一通信信号资源可以是一个资源组, 例如可以包括 通信资源 a, b, c及 d, 所述第一设备可以在资源 a上接收所述第二设备的通 信信号, 在资源 c上发送所述第一设备的通信信号。 资源 a和 c是不同的资 源, 但是都同属于所述第一通信信号资源。 本实施例通过将所述通信信号资 源划分为同时支持收发的所述第一通信信号资源和只支持接收的所述第二通 信信号资源,实现了 D2D通信过程中对接收和发送信号所需资源的灵活配置。
作为一种可行的实施方式, 在上述实施例的基础上, 各所述第二设备可 以共享相同的通信信号资源, 此时, 各所述第二设备使用所述相同的通信信 号资源进行 D2D通信时的定时各不相同。
在上述实施例基础上, 所述第一设备获取所述通信信号资源的信息的实 现方式至少包括以下两种方式:
方式 1 : 所述第一设备获取所述通信信号资源的定时信号; 根据所述通 信信号资源的定时信号, 确定所述通信信号资源的定时信息。 其中, 所述第 一设备获取所述通信信号资源的定时信号的实现方法可以为: 所述第一设备 获取所述通信信号资源的定时信号的指示信息, 并根据所述通信信号资源的 定时信号的指示信息, 获取所述通信信号资源的定时信号。
方式 2: 所述第一设备获取参考定时信号的指示信息, 以及所述通信信 号资源的定时相对于所述参考定时信号的定时的时间偏差; 根据所述参考定 时信号的指示信息, 获取所述参考定时信号; 根据所述参考定时信号, 确定 所述参考定时信号的定时信息; 根据所述参考定时信号的定时信息, 以及所 述通信信号资源的定时相当于所述参考定时信号的定时的时间偏差, 获取所 述通信信号资源的定时信息。
具体地, 所述第一设备从所述第一基站获取参考定时信号的指示信息, 以及所述通信信号资源的定时相对于所述参考定时信号的定时的时间偏差, 根据所述参考定时信号的指示信息获取所述参考定时信号, 进而确定所述参 考定时信号的定时信息; 进一步, 根据所述参考定时信号的定时信息, 以及 所述通信信号资源的定时相当于所述参考定时信号的定时的时间偏差, 获取 所述通信信号资源的定时信息。 所述参考定时信号为公共定时参考源, 可以为多个小区的通信信号资源 提供参考定时; 可选的, 所述参考定时信号可以为独立的定时参考源、 第一 设备的通信信号资源的定时信息 (即, 所述第一小区为其所服务的用户分配 的通信信号资源的定时信息) 、 第二设备的通信信号资源的定时信息、 或者 其他小区 (即, 不是第一小区和第二小区) 的通信信号资源的定时信息。
实际中, 所述定时信号的指示信息可以是: 主同步信号 (Primary Synchronization Signal,简称 PSS )的指示信息;和 /或,辅同步信号(Secondary Synchronization Signal,简称 SSS )的指示信息;和 /或,公共导频信号(Common Reference Signal, 简称 CRS )的指示信息; 和 /或, 解调参考信号的指示信息; 和 /或, 小区标识信息; 和 /或, PD2DSS的指示信息; 和 /或, SD2DSS的指示 信息; 和 /或, D2D解调参考信号(D2D-Domodulation Reference Signal, 简称 D2D-DMRS ) 的指示信息; 和 /或, D2D用户设备组 (D2D cluster) 的标识信 息。
图 2为本发明实施例提供的设备到设备 D2D通信的方法的另一流程图。 如图 2所示, 本实施例的方法包括:
201、基站获取通信信号资源及所述通信信号资源的定时信息, 所述通信 信号资源用于 D2D通信。
202、所述基站向第一设备发送所述通信信号资源和所述通信信号资源的 定时信息, 以供所述第一设备根据所述通信信号资源的定时信息, 在所述通 信信号资源上接收第二设备发送的通信信号。
具体地, 所述基站为所述第一设备的服务小区所属的基站; 所述基站获 取用于 D2D通信的通信信号资源及所述通信信号资源的定时信息,并发送给 所述第一设备; 所述第一设备根据所述通信信号资源的定时信息, 在所述通 信信号资源上接收第二设备发送的通信信号。
本发明实施例提供的设备到设备 D2D通信的方法,通过获取并向第一设 备提供用于 D2D通信的通信信号资源及所述通信信号资源的定时信息, 以使 所述第一设备根据所述通信信号资源的定时信息在所述通信信号资源上接收 第二设备发送的通信信号, 实现了用户设备之间 D2D通信的同步, 使得处于 不同小区的用户能够使用设备到设备临近服务。
图 3为本发明实施例提供的设备到设备 D2D通信的方法的信令流程图。 所述方法由第一设备、 第二设备、 第一基站配合执行, 所述第一基站为所述 第一设备的服务小区 (第一小区)所属的基站。 如图 3所示, 所述方法包括:
301、第一基站向第一设备发送各基站控制下的小区分别分配的用于各自 所服务的用户进行 D2D通信的通信信号资源及各所述通信信号资源的定时信 息。
302、第一设备使用所述通信信号资源的定时信息, 在所述通信信号资源 上接收第二设备发送的通信信号。
图 4为本发明实施例提供的第一设备的结构示意图。 如图 4所述, 本实 施例提供的第一设备 400, 包括: 获取模块 401和收发模块 402, 其中:
所述获取模块 401, 用于获取通信信号资源及所述通信信号资源的定时 信息, 所述通信信号资源用于 D2D通信;
所述收发模块 402, 用于根据所述获取模块 401获取的所述通信信号资 源的定时信息, 在所述通信信号资源上接收第二设备发送的通信信号。
本发明实施例提供的第一设备 400, 可以用于执行图 1所示方法实施例 的技术方案, 其实现原理和技术效果类似, 在此不再赘述。
在一种实现方式中, 所述获取模块 401, 具体用于: 获取所述通信信号 资源的定时信号; 根据所述通信信号资源的定时信号, 确定所述通信信号资 源的定时信息。
进一步, 所述获取模块 401, 具体用于: 获取所述通信信号资源的定时 信号的指示信息; 根据所述通信信号资源的定时信号的指示信息, 获取所述 通信信号资源的定时信号。
在另一种实现方式中, 所述获取模块 401, 具体用于: 获取参考定时信 号的指示信息, 以及所述通信信号资源的定时相对于所述参考定时信号的定 时的时间偏差; 根据所述参考定时信号的指示信息, 获取所述参考定时信号; 根据所述参考定时信号, 确定所述参考定时信号的定时信息; 根据所述参考 定时信号的定时信息, 以及所述通信信号资源的定时相当于所述参考定时信 号的定时的时间偏差, 获取所述通信信号资源的定时信息。 可选的, 所述参 考定时信号为所述第一设备的通信信号资源的定时信号。
进一步, 所述定时信号的指示信息为: 主同步信号 PSS的指示信息; 和 / 或, 辅同步信号 SSS的指示信息; 和 /或, 公共导频信号 CRS的指示信息; 和 /或, 解调参考信号的指示信息; 和 /或, 小区标识信息; 和 /或, D2D主同 步信号 PD2DSS的指示信息; 和 /或, D2D辅同步信号 SD2DSS的指示信息; 和 /或, D2D解调参考信号 D2D-DMRS的指示信息; 和 /或, D2D用户设备组 D2D cluster的标识信息。
可选的, 所述通信信号资源包括: 第一通信信号资源和第二通信信号资 源; 相应的, 所述通信信号资源的定时信息包括: 所述第一通信信号资源的 定时信息和所述第二通信信号资源的定时信息; 所述收发模块 402, 具体用 于: 根据所述第一通信信号资源的定时信息, 在所述第一通信信号资源上接 收所述第二设备发送的通信信号, 并发送所述第一设备的通信信号; 根据所 述第二通信信号资源的定时信息, 在所述第二通信信号资源上接收所述第二 设备发送的通信信号。
可选的, 所述 D2D通信包括 D2D发现和 /或 D2D直接通信。
图 5为本发明实施例提供的基站的结构示意图。 如图 5所述, 本实施例 提供的基站 500, 包括: 获取模块 501和发送模块 502, 其中:
所述获取模块 501, 用于获取通信信号资源及所述通信信号资源的定时 信息, 所述通信信号资源用于 D2D通信;
所述发送模块 502, 用于向第一设备发送所述获取模块 501获取的所述 通信信号资源和所述通信信号资源的定时信息, 以供所述第一设备根据所述 通信信号资源的定时信息, 在所述通信信号资源上接收第二设备发送的通信 信号。
本发明实施例提供的基站 500, 可以用于执行图 2所示方法实施例的技 术方案, 其实现原理和技术效果类似, 在此不再赘述。
在一种实现方式中, 所述发送模块 502, 具体用于向所述第一设备发送 所述通信信号资源和所述通信信号资源的定时信号, 以供所述第一设备根据 所述通信信号资源的定时信号, 确定所述通信信号资源的定时信息, 并根据 所述通信信号资源的定时信息, 在所述通信信号资源上接收所述第二设备发 送的通信信号。
进一步, 所述发送模块 502, 具体用于向所述第一设备发送所述通信信 号资源的定时信号的指示信息, 以供所述第一设备根据所述通信信号资源的 定时信号的指示信息, 获取所述通信信号资源的定时信号, 并根据所述通信 信号资源的定时信号, 确定所述通信信号资源的定时信息。
在另一种实现方式中, 所述发送模块 502, 具体用于向所述第一设备发 送参考定时信号的指示信息、 所述通信信号资源、 以及所述通信信号资源的 定时相对于所述参考定时信号的定时的时间偏差, 以供所述第一设备根据所 述参考定时信号的指示信息以及所述通信信号资源的定时相对于所述参考定 时信号的定时的时间偏差, 获取所述通信信号资源的定时信息, 并使用所述 通信信号资源的定时信息在所述通信信号资源上接收第二设备发送的通信信 号。可选的, 所述参考定时信号为所述第一设备的通信信号资源的定时信号。
进一步, 所述定时信号的指示信息为: 主同步信号 PSS的指示信息; 和 / 或, 辅同步信号 SSS的指示信息; 和 /或, 公共导频信号 CRS的指示信息; 和 /或, 解调参考信号的指示信息; 和 /或, 小区标识信息; 和 /或, D2D主同 步信号 PD2DSS的指示信息; 和 /或, D2D辅同步信号 SD2DSS的指示信息; 和 /或, D2D解调参考信号 D2D-DMRS的指示信息; 和 /或, D2D用户设备组 D2D cluster的标识信息。
可选的, 所述通信信号资源包括: 第一通信信号资源和第二通信信号资 源; 相应的, 所述通信信号资源的定时信息包括: 所述第一通信信号资源的 定时信息和所述第二通信信号资源的定时信息; 所述发送模块 502, 具体用 于: 向所述第一设备发送所述第一通信信号资源、 所述第二通信信号资源、 所述第一通信信号资源的定时信息、以及所述第二通信信号资源的定时信息, 以供所述第一设备根据所述第一通信信号资源的定时信息, 在所述第一通信 信号资源上接收所述第二设备发送的通信信号、 发送所述第一设备的通信信 号, 并供所述第一设备根据所述第二通信信号资源的定时信息, 在所述第二 通信信号资源上接收所述第二设备发送的通信信号。
可选的, 所述 D2D通信包括 D2D发现和 /或 D2D直接通信。
图 6为本发明实施例提供的第一设备的另一结构示意图。 如图 6所示, 本发明实施例提供的第一设备 600, 包括: 处理器 601、 存储器 602和通信接 口 603, 还包括通信总线 604; 处理器 601、 存储器 602和通信接口 603通过 通信总线 604相互连接。
上述的处理器 601 可以是通用处理器, 包括中央处理器 (Central Processing Unit, 简称 CPU) 、 网络处理器 (Network Processor, 简称 NP) 等; 还可以是数字信号处理器 (DSP) 、 专用集成电路 (ASIC) 、 现成可编 程门阵列 (FPGA) 或者其他可编程逻辑器件、 分立硬件组件。
存储器 602, 用于存放程序。 具体地, 程序可以包括程序代码, 所述程 序代码包括计算机操作指令。存储器 602可能包含高速 RAM, 也可能还包括 非易失性存储器 (non- volatile memory) , 例如至少一个磁盘存储器。
所述通信接口 603用于所述第一设备 600与其他设备间的通信; 通过所 述通信接口可以接收或发送数据包。
当所述第一设备 600运行时, 处理器 601与存储器 602之间通信, 处理 器 601执行存储器 602中存放的程序, 执行本发明实施例提供的设备到设备 D2D通信的方法, 所述方法包括:
获取通信信号资源及所述通信信号资源的定时信息, 所述通信信号资源 用于 D2D通信; 根据所述通信信号资源的定时信息, 在所述通信信号资源上 接收第二设备发送的通信信号。
在一种实现方式中, 所述获取所述通信信号资源的定时信息, 包括: 获 取所述通信信号资源的定时信号; 根据所述通信信号资源的定时信号, 确定 所述通信信号资源的定时信息。
进一步, 所述获取所述通信信号资源的定时信号, 包括: 获取所述通信 信号资源的定时信号的指示信息; 根据所述通信信号资源的定时信号的指示 信息, 获取所述通信信号资源的定时信号。
在另一种实现方式中, 所述获取所述通信信号资源的定时信息, 包括: 获取参考定时信号的指示信息, 以及所述通信信号资源的定时相对于所述参 考定时信号的定时的时间偏差; 根据所述参考定时信号的指示信息, 获取所 述参考定时信号; 根据所述参考定时信号, 确定所述参考定时信号的定时信 息; 根据所述参考定时信号的定时信息, 以及所述通信信号资源的定时相当 于所述参考定时信号的定时的时间偏差,获取所述通信信号资源的定时信息。 可选的, 所述参考定时信号为所述第一设备的通信信号资源的定时信号。
进一步, 所述定时信号的指示信息为: 主同步信号 PSS的指示信息; 和 / 或, 辅同步信号 SSS的指示信息; 和 /或, 公共导频信号 CRS的指示信息; 和 /或, 解调参考信号的指示信息; 和 /或, 小区标识信息; 和 /或, D2D主同 步信号 PD2DSS的指示信息; 和 /或, D2D辅同步信号 SD2DSS的指示信息; 和 /或, D2D解调参考信号 D2D-DMRS的指示信息; 和 /或, D2D用户设备组 D2D cluster的标识信息。
可选的, 所述通信信号资源包括: 第一通信信号资源和第二通信信号资 源; 相应的, 所述通信信号资源的定时信息包括: 所述第一通信信号资源的 定时信息和所述第二通信信号资源的定时信息; 所述根据所述通信信号资源 的定时信息, 在所述通信信号资源上接收第二设备发送的通信信号, 包括: 根据所述第一通信信号资源的定时信息, 在所述第一通信信号资源上接收所 述第二设备发送的通信信号, 并发送所述第一设备的通信信号; 根据所述第 二通信信号资源的定时信息, 在所述第二通信信号资源上接收所述第二设备 发送的通信信号。
可选的, 所述 D2D通信包括 D2D发现和 /或 D2D直接通信。
图 7为本发明实施例提供的基站的另一结构示意图。 如图 7所示, 本发 明实施例提供的基站 700, 包括: 处理器 701、 存储器 702和通信接口 703, 还包括通信总线 704; 处理器 701、存储器 702和通信接口 703通过通信总线 704相互连接。
上述的处理器 701 可以是通用处理器, 包括中央处理器 (Central Processing Unit, 简称 CPU) 、 网络处理器 (Network Processor, 简称 NP) 等; 还可以是数字信号处理器 (DSP) 、 专用集成电路 (ASIC) 、 现成可编 程门阵列 (FPGA) 或者其他可编程逻辑器件、 分立硬件组件。
存储器 702, 用于存放程序。 具体地, 程序可以包括程序代码, 所述程 序代码包括计算机操作指令。存储器 702可能包含高速 RAM, 也可能还包括 非易失性存储器 (non- volatile memory) , 例如至少一个磁盘存储器。
所述通信接口 703用于所述基站 700与其他设备间的通信; 通过所述通 信接口可以接收或发送数据包。
当所述基站 700运行时,处理器 701与存储器 702之间通信,处理器 701 执行存储器 702中存放的程序,执行本发明实施例提供的设备到设备 D2D通 信的方法, 所述方法包括:
获取通信信号资源及所述通信信号资源的定时信息, 所述通信信号资源 用于 D2D通信; 向第一设备发送所述通信信号资源和所述通信信号资源的定 时信息, 以供所述第一设备根据所述通信信号资源的定时信息, 在所述通信 信号资源上接收第二设备发送的通信信号。
在一种实现方式中, 所述向第一设备发送所述通信信号资源和所述通信 信号资源的定时信息, 以供所述第一设备根据所述通信信号资源的定时信息, 在所述通信信号资源上接收第二设备发送的通信信号, 包括: 向所述第一设 备发送所述通信信号资源和所述通信信号资源的定时信号, 以供所述第一设 备根据所述通信信号资源的定时信号, 确定所述通信信号资源的定时信息, 并根据所述通信信号资源的定时信息, 在所述通信信号资源上接收所述第二 设备发送的通信信号。
进一步, 所述向所述第一设备发送所述通信信号资源的定时信号, 以供 所述第一设备根据所述通信信号资源的定时信号, 确定所述通信信号资源的 定时信息, 包括: 向所述第一设备发送所述通信信号资源的定时信号的指示 信息, 以供所述第一设备根据所述通信信号资源的定时信号的指示信息, 获 取所述通信信号资源的定时信号, 并根据所述通信信号资源的定时信号, 确 定所述通信信号资源的定时信息。
在另一种实现方式中, 所述向第一设备发送所述通信信号资源和所述通 信信号资源的定时信息, 以供所述第一设备根据所述通信信号资源的定时信 息, 在所述通信信号资源上接收第二设备发送的通信信号, 包括: 向所述第 一设备发送参考定时信号的指示信息、 所述通信信号资源、 以及所述通信信 号资源的定时相对于所述参考定时信号的定时的时间偏差, 以供所述第一设 备根据所述参考定时信号的指示信息以及所述通信信号资源的定时相对于所 述参考定时信号的定时的时间偏差, 获取所述通信信号资源的定时信息, 并 使用所述通信信号资源的定时信息在所述通信信号资源上接收第二设备发送 的通信信号。 可选的, 所述参考定时信号为所述第一设备的通信信号资源的 定时信号。
进一步, 所述定时信号的指示信息为: 主同步信号 PSS的指示信息; 和 / 或, 辅同步信号 SSS的指示信息; 和 /或, 公共导频信号 CRS的指示信息; 和 /或, 解调参考信号的指示信息; 和 /或, 小区标识信息; 和 /或, D2D主同 步信号 PD2DSS的指示信息; 和 /或, D2D辅同步信号 SD2DSS的指示信息; 和 /或, D2D解调参考信号 D2D-DMRS的指示信息; 和 /或, D2D用户设备组 D2D cluster的标识信息。 可选的, 所述通信信号资源包括: 第一通信信号资源和第二通信信号资 源; 相应的, 所述通信信号资源的定时信息包括: 所述第一通信信号资源的 定时信息和所述第二通信信号资源的定时信息; 所述向第一设备发送所述通 信信号资源和所述通信信号资源的定时信息, 以供所述第一设备根据所述通 信信号资源的定时信息, 在所述通信信号资源上接收第二设备发送的通信信 号, 包括: 向所述第一设备发送所述第一通信信号资源、 所述第二通信信号 资源、 所述第一通信信号资源的定时信息、 以及所述第二通信信号资源的定 时信息, 以供所述第一设备根据所述第一通信信号资源的定时信息, 在所述 第一通信信号资源上接收所述第二设备发送的通信信号、 发送所述第一设备 的通信信号, 并供所述第一设备根据所述第二通信信号资源的定时信息, 在 所述第二通信信号资源上接收所述第二设备发送的通信信号。
可选的, 所述 D2D通信包括 D2D发现和 /或 D2D直接通信。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步骤 可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读 取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述 的存储介质包括: ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介 质。
最后应说明的是: 以上各实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述各实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分或者全部技术特征进行等同替换; 而这些修改或者替换, 并 不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims

权 利 要 求 书
1、 一种设备到设备 D2D通信的方法, 其特征在于, 包括:
第一设备获取通信信号资源及所述通信信号资源的定时信息, 所述通信 信号资源用于 D2D通信;
所述第一设备根据所述通信信号资源的定时信息, 在所述通信信号资源 上接收第二设备发送的通信信号。
2、 根据权利要求 1所述的方法, 其特征在于, 所述第一设备获取所述通 信信号资源的定时信息, 包括:
所述第一设备获取所述通信信号资源的定时信号;
所述第一设备根据所述通信信号资源的定时信号, 确定所述通信信号资 源的定时信息。
3、 根据权利要求 2所述的方法, 其特征在于, 所述第一设备获取所述通 信信号资源的定时信号, 包括:
所述第一设备获取所述通信信号资源的定时信号的指示信息;
所述第一设备根据所述通信信号资源的定时信号的指示信息, 获取所述 通信信号资源的定时信号。
4、 根据权利要求 1所述的方法, 其特征在于, 所述第一设备获取所述通 信信号资源的定时信息, 包括:
所述第一设备获取参考定时信号的指示信息, 以及所述通信信号资源的 定时相对于所述参考定时信号的定时的时间偏差;
所述第一设备根据所述参考定时信号的指示信息, 获取所述参考定时信 号;
所述第一设备根据所述参考定时信号, 确定所述参考定时信号的定时信 息;
所述第一设备根据所述参考定时信号的定时信息, 以及所述通信信号资 源的定时相当于所述参考定时信号的定时的时间偏差, 获取所述通信信号资 源的定时信息。
5、 根据权利要求 4所述的方法, 其特征在于, 所述参考定时信号为所述 第一设备的通信信号资源的定时信号。
6、 根据权利要求 3-5中任一项所述的方法, 其特征在于, 所述定时信号 的指示信息为: 主同步信号 PSS的指示信息; 和 /或, 辅同步信号 SSS的指示 信息; 和 /或, 公共导频信号 CRS的指示信息; 和 /或, 解调参考信号的指示 信息; 和 /或, 小区标识信息; 和 /或, D2D主同步信号 PD2DSS的指示信息; 和 /或, D2D 辅同步信号 SD2DSS 的指示信息; 和 /或, D2D 解调参考信号 D2D-DMRS的指示信息; 和 /或, D2D用户设备组 D2D cluster的标识信息。
7、 根据权利要求 1-6中任一项所述的方法, 其特征在于, 所述通信信号 资源包括: 第一通信信号资源和第二通信信号资源; 相应的, 所述通信信号 资源的定时信息包括: 所述第一通信信号资源的定时信息和所述第二通信信 号资源的定时信息;
所述第一设备根据所述通信信号资源的定时信息, 在所述通信信号资源 上接收第二设备发送的通信信号, 包括:
所述第一设备根据所述第一通信信号资源的定时信息, 在所述第一通信 信号资源上接收所述第二设备发送的通信信号, 并发送所述第一设备的通信 信号; 根据所述第二通信信号资源的定时信息, 在所述第二通信信号资源上 接收所述第二设备发送的通信信号。
8、 根据权利要求 1-7中任一项所述的方法, 其特征在于, 所述 D2D通 信包括 D2D发现和 /或 D2D直接通信。
9、 一种设备到设备 D2D通信的方法, 其特征在于, 包括:
基站获取通信信号资源及所述通信信号资源的定时信息, 所述通信信号 资源用于 D2D通信;
所述基站向第一设备发送所述通信信号资源和所述通信信号资源的定时 信息, 以供所述第一设备根据所述通信信号资源的定时信息, 在所述通信信 号资源上接收第二设备发送的通信信号。
10、 根据权利要求 9所述的方法, 其特征在于, 所述基站向第一设备发 送所述通信信号资源和所述通信信号资源的定时信息, 以供所述第一设备根 据所述通信信号资源的定时信息, 在所述通信信号资源上接收第二设备发送 的通信信号, 包括:
所述基站向所述第一设备发送所述通信信号资源和所述通信信号资源的 定时信号, 以供所述第一设备根据所述通信信号资源的定时信号, 确定所述 通信信号资源的定时信息, 并根据所述通信信号资源的定时信息, 在所述通 信信号资源上接收所述第二设备发送的通信信号。
11、 根据权利要求 10所述的方法, 其特征在于, 所述基站向所述第一设 备发送所述通信信号资源的定时信号, 以供所述第一设备根据所述通信信号 资源的定时信号, 确定所述通信信号资源的定时信息, 包括:
所述基站向所述第一设备发送所述通信信号资源的定时信号的指示信 息, 以供所述第一设备根据所述通信信号资源的定时信号的指示信息, 获取 所述通信信号资源的定时信号, 并根据所述通信信号资源的定时信号, 确定 所述通信信号资源的定时信息。
12、 根据权利要求 9所述的方法, 其特征在于, 所述基站向第一设备发 送所述通信信号资源和所述通信信号资源的定时信息, 以供所述第一设备根 据所述通信信号资源的定时信息, 在所述通信信号资源上接收第二设备发送 的通信信号, 包括:
所述基站向所述第一设备发送参考定时信号的指示信息、 所述通信信号 资源、 以及所述通信信号资源的定时相对于所述参考定时信号的定时的时间 偏差, 以供所述第一设备根据所述参考定时信号的指示信息以及所述通信信 号资源的定时相对于所述参考定时信号的定时的时间偏差, 获取所述通信信 号资源的定时信息, 并使用所述通信信号资源的定时信息在所述通信信号资 源上接收第二设备发送的通信信号。
13、 根据权利要求 12所述的方法, 其特征在于, 所述参考定时信号为所 述第一设备的通信信号资源的定时信号。
14、 根据权利要求 11-13 中任一项所述的方法, 其特征在于, 所述定时 信号的指示信息为: 主同步信号 PSS 的指示信息; 和 /或, 辅同步信号 SSS 的指示信息; 和 /或, 公共导频信号 CRS的指示信息; 和 /或, 解调参考信号 的指示信息; 和 /或, 小区标识信息; 和 /或, D2D主同步信号 PD2DSS的指 示信息; 和 /或, D2D辅同步信号 SD2DSS的指示信息; 和 /或, D2D解调参 考信号 D2D-DMRS的指示信息; 和 /或, D2D用户设备组 D2D cluster的标识 信息。
15、 根据权利要求 9-14中任一项所述的方法, 其特征在于, 所述通信信 号资源包括: 第一通信信号资源和第二通信信号资源; 相应的, 所述通信信 号资源的定时信息包括: 所述第一通信信号资源的定时信息和所述第二通信 信号资源的定时信息;
所述基站向第一设备发送所述通信信号资源和所述通信信号资源的定时 信息, 以供所述第一设备根据所述通信信号资源的定时信息, 在所述通信信 号资源上接收第二设备发送的通信信号, 包括:
所述基站向所述第一设备发送所述第一通信信号资源、 所述第二通信信 号资源、 所述第一通信信号资源的定时信息、 以及所述第二通信信号资源的 定时信息, 以供所述第一设备根据所述第一通信信号资源的定时信息, 在所 述第一通信信号资源上接收所述第二设备发送的通信信号、 发送所述第一设 备的通信信号, 并供所述第一设备根据所述第二通信信号资源的定时信息, 在所述第二通信信号资源上接收所述第二设备发送的通信信号。
16、 根据权利要求 9-15 中任一项所述的方法, 其特征在于, 所述 D2D 通信包括 D2D发现和 /或 D2D直接通信。
17、 一种第一设备, 其特征在于, 包括:
获取模块, 用于获取通信信号资源及所述通信信号资源的定时信息, 所 述通信信号资源用于设备到设备 D2D通信;
收发模块,用于根据所述获取模块获取的所述通信信号资源的定时信息, 在所述通信信号资源上接收第二设备发送的通信信号。
18、 根据权利要求 17所述的第一设备, 其特征在于, 所述获取模块, 具 体用于: 获取所述通信信号资源的定时信号; 根据所述通信信号资源的定时 信号, 确定所述通信信号资源的定时信息。
19、 根据权利要求 18所述的第一设备, 其特征在于, 所述获取模块, 具 体用于: 获取所述通信信号资源的定时信号的指示信息; 根据所述通信信号 资源的定时信号的指示信息, 获取所述通信信号资源的定时信号。
20、 根据权利要求 17所述的第一设备, 其特征在于, 所述获取模块, 具 体用于: 获取参考定时信号的指示信息, 以及所述通信信号资源的定时相对 于所述参考定时信号的定时的时间偏差;根据所述参考定时信号的指示信息, 获取所述参考定时信号; 根据所述参考定时信号, 确定所述参考定时信号的 定时信息; 根据所述参考定时信号的定时信息, 以及所述通信信号资源的定 时相当于所述参考定时信号的定时的时间偏差, 获取所述通信信号资源的定 时信息。
21、 根据权利要求 20所述的第一设备, 其特征在于, 所述参考定时信号 为所述第一设备的通信信号资源的定时信号。
22、 根据权利要求 19-21 中任一项所述的第一设备, 其特征在于, 所述 定时信号的指示信息为: 主同步信号 PSS 的指示信息; 和 /或, 辅同步信号 SSS的指示信息; 和 /或, 公共导频信号 CRS的指示信息; 和 /或, 解调参考 信号的指示信息; 和 /或, 小区标识信息; 和 /或, D2D 主同步信号 PD2DSS 的指示信息; 和 /或, D2D辅同步信号 SD2DSS的指示信息; 和 /或, D2D解 调参考信号 D2D-DMRS的指示信息; 和 /或, D2D用户设备组 D2D cluster的 标识信息。
23、 根据权利要求 17-22 中任一项所述的第一设备, 其特征在于, 所述 通信信号资源包括: 第一通信信号资源和第二通信信号资源; 相应的, 所述 通信信号资源的定时信息包括: 所述第一通信信号资源的定时信息和所述第 二通信信号资源的定时信息;
所述收发模块, 具体用于: 根据所述第一通信信号资源的定时信息, 在 所述第一通信信号资源上接收所述第二设备发送的通信信号, 并发送所述第 一设备的通信信号; 根据所述第二通信信号资源的定时信息, 在所述第二通 信信号资源上接收所述第二设备发送的通信信号。
24、 根据权利要求 17-23 中任一项所述的第一设备, 其特征在于, 所述 D2D通信包括 D2D发现和 /或 D2D直接通信。
25、 一种基站, 其特征在于, 包括:
获取模块, 用于获取通信信号资源及所述通信信号资源的定时信息, 所 述通信信号资源用于设备到设备 D2D通信;
发送模块, 用于向第一设备发送所述获取模块获取的所述通信信号资源 和所述通信信号资源的定时信息, 以供所述第一设备根据所述通信信号资源 的定时信息, 在所述通信信号资源上接收第二设备发送的通信信号。
26、 根据权利要求 25所述的基站, 其特征在于, 所述发送模块, 具体用 于向所述第一设备发送所述通信信号资源和所述通信信号资源的定时信号, 以供所述第一设备根据所述通信信号资源的定时信号, 确定所述通信信号资 源的定时信息, 并根据所述通信信号资源的定时信息, 在所述通信信号资源 上接收所述第二设备发送的通信信号。
27、 根据权利要求 26所述的基站, 其特征在于, 所述发送模块, 具体用 于向所述第一设备发送所述通信信号资源的定时信号的指示信息, 以供所述 第一设备根据所述通信信号资源的定时信号的指示信息, 获取所述通信信号 资源的定时信号, 并根据所述通信信号资源的定时信号, 确定所述通信信号 资源的定时信息。
28、 根据权利要求 25所述的基站, 其特征在于, 所述发送模块, 具体用 于向所述第一设备发送参考定时信号的指示信息、 所述通信信号资源、 以及 所述通信信号资源的定时相对于所述参考定时信号的定时的时间偏差, 以供 所述第一设备根据所述参考定时信号的指示信息以及所述通信信号资源的定 时相对于所述参考定时信号的定时的时间偏差, 获取所述通信信号资源的定 时信息, 并使用所述通信信号资源的定时信息在所述通信信号资源上接收第 二设备发送的通信信号。
29、 根据权利要求 28所述的基站, 其特征在于, 所述参考定时信号为所 述第一设备的通信信号资源的定时信号。
30、 根据权利要求 27-29 中任一项所述的基站, 其特征在于, 所述定时 信号的指示信息为: 主同步信号 PSS 的指示信息; 和 /或, 辅同步信号 SSS 的指示信息; 和 /或, 公共导频信号 CRS的指示信息; 和 /或, 解调参考信号 的指示信息; 和 /或, 小区标识信息; 和 /或, D2D主同步信号 PD2DSS的指 示信息; 和 /或, D2D辅同步信号 SD2DSS的指示信息; 和 /或, D2D解调参 考信号 D2D-DMRS的指示信息; 和 /或, D2D用户设备组 D2D cluster的标识 信息。
31、 根据权利要求 25-30 中任一项所述的基站, 其特征在于, 所述通信 信号资源包括: 第一通信信号资源和第二通信信号资源; 相应的, 所述通信 信号资源的定时信息包括: 所述第一通信信号资源的定时信息和所述第二通 信信号资源的定时信息;
所述发送模块, 具体用于: 向所述第一设备发送所述第一通信信号资源、 所述第二通信信号资源、 所述第一通信信号资源的定时信息、 以及所述第二 通信信号资源的定时信息, 以供所述第一设备根据所述第一通信信号资源的 定时信息, 在所述第一通信信号资源上接收所述第二设备发送的通信信号、 发送所述第一设备的通信信号, 并供所述第一设备根据所述第二通信信号资 源的定时信息, 在所述第二通信信号资源上接收所述第二设备发送的通信信 号。
32、 根据权利要求 25-31中任一项所述的基站, 其特征在于, 所述 D2D 通信包括 D2D发现和 /或 D2D直接通信。
33、 一种第一设备, 其特征在于, 包括: 处理器和存储器, 所述存储器 存储执行指令, 当所述第一设备运行时, 所述处理器与所述存储器之间通信, 所述处理器执行所述执行指令使得所述第一设备执行如权利要求 1-8 中任一 项所述的方法。
34、 一种基站, 其特征在于, 包括处理器和存储器, 所述存储器存储执 行指令, 当所述基站运行时, 所述处理器与所述存储器之间通信, 所述处理 器执行所述执行指令使得所述基站执行如权利要求 9-16 中任一项所述的方 法。
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