WO2015113393A1 - D2d发现及通信方法、资源分配方法和控制节点 - Google Patents

D2d发现及通信方法、资源分配方法和控制节点 Download PDF

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Publication number
WO2015113393A1
WO2015113393A1 PCT/CN2014/084114 CN2014084114W WO2015113393A1 WO 2015113393 A1 WO2015113393 A1 WO 2015113393A1 CN 2014084114 W CN2014084114 W CN 2014084114W WO 2015113393 A1 WO2015113393 A1 WO 2015113393A1
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WO
WIPO (PCT)
Prior art keywords
resource
communication
information
discovery
control node
Prior art date
Application number
PCT/CN2014/084114
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English (en)
French (fr)
Inventor
黄莹
陈琳
谢峰
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP14880606.0A priority Critical patent/EP3089534A4/en
Priority to US15/114,407 priority patent/US10034293B2/en
Publication of WO2015113393A1 publication Critical patent/WO2015113393A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0219—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave where the power saving management affects multiple terminals
    • 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
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a device-to-device (D2D) discovery and communication method, a resource allocation method, and a control node.
  • D2D device-to-device
  • D2D Device-to-Device, Device-to-Device
  • D2D represents a new direction for future communication technologies.
  • the application of D2D technology can reduce the burden of cellular networks, reduce the battery power consumption of user equipment, increase the data rate, and improve the robustness of the network infrastructure, which satisfies the requirements of the above high data rate services and proximity services.
  • D2D technology can work in licensed or unlicensed frequency bands, allowing multiple D2D-enabled user equipment (D2D User Equipment, D2D UE) to directly discover without network infrastructure or network infrastructure. / Direct communication.
  • D2D User Equipment D2D User Equipment
  • D2D UE D2D User Equipment
  • UE1 and UE2 perform data interaction under the coverage of the cellular network, and the user plane data does not pass through the network infrastructure, as shown in mode 1 of FIG. 1;
  • D2D technology usually includes D2D discovery technology and D2D communication technology:
  • D2D discovery technology refers to a technique for judging/determining the proximity of a plurality of D2D user equipments (for example, within a range in which D2D direct communication is possible) or for determining/determining that a first user equipment is adjacent to a second user equipment. .
  • D2D communication technology refers to a technology in which some or all of the communication data between D2D user equipments can communicate directly without using the network infrastructure.
  • D2D discovery or communication resources are usually scheduled and allocated by the base station, which can improve resource reuse efficiency, and ensure network side control of D2D discovery or communication and coordination between D2D and cellular systems. effect.
  • the discovery or communication resources of the D2D UE may be dynamically scheduled by the base station, or the base station may allocate semi-persistent scheduling resources for the D2D UE.
  • D2D communication requires strong robustness, and it can still provide maximum service in the current shortage of communication resources or congestion or network infrastructure. Therefore, public security requires D2D communication to work not only in a network coverage scenario, but also in partial coverage and no network coverage scenarios.
  • the D2D user equipment can work in a self-organizing manner, or select some D2D user equipments as control nodes in the no-coverage environment to perform D2D communication management control.
  • These control nodes provide functions similar to base stations, for example, , synchronization, resource management, etc.
  • a plurality of D2D UEs performing D2D discovery or communication may be served by different base stations (or control nodes). For example, neighboring UEs performing D2D communication are respectively located at the edge of coverage of different base stations, and there is no D2D in the related art in the related art. Communication resource allocation method.
  • the D2D UEs in the network coverage use the synchronization information sent by the base station as the synchronization reference of the D2D, but the UEs that perform D2D discovery or communication are respectively served by different base stations. The synchronization between different base stations is not guaranteed (especially for FDD).
  • Embodiments of the present invention provide a D2D discovery and communication method, a resource allocation method, and a control node, which solve a scenario in which multiple D2D UEs that perform D2D discovery or communication are served by different control nodes.
  • a D2D discovery and communication resource allocation method includes:
  • the control node acquires D2D resource set information, where the D2D resource set includes a D2D discovery resource set and/or a D2D communication resource set;
  • the control node determines a D2D discovery or communication scheduling resource of the D2D user equipment according to the D2D resource set information.
  • the control node comprises: a base station, or a D2D user equipment serving as a D2D control identity.
  • the acquiring, by the control node, the D2D resource set information includes:
  • the control node acquires D2D resource collection information from an operation management and maintenance (OAM) system; or the control node configures D2D resource collection information by itself;
  • OAM operation management and maintenance
  • control node obtains D2D resource collection information from the core network element or the newly added D2D control network element.
  • control node self-configuring the D2D resource set information includes:
  • the control node configures its own according to the D2D resource information used by the adjacent control node.
  • control node configures its own D2D resource set information according to the D2D resource information used by the neighboring control node, including:
  • the control node obtains D2D resource information used by the neighboring control node through an S1 or X2 interface or an air interface.
  • the control node further includes: the control node sending the D2D resource set information to another control node or a core network element or a newly added D2D control network element.
  • the control node further includes: Receiving, by the control node, the recommended or available or unavailable D2D resource information sent by the other control node or the core network element or the newly added D2D control network element;
  • the control node determines its own D2D resource set information according to the recommended or available or unavailable D2D resource information.
  • the D2D resource set information includes resource set information for D2D discovery or communication, and the resource set information includes at least one of the following:
  • Resource usage restrictions Preferably, the use restriction conditions of the resource include:
  • the use restriction condition of the downlink cellular resource is only applicable to the coverage area of the non-cellular network; or, the D2D dedicated resource can be applied to both the network coverage and the network coverage area.
  • the resource set information for D2D discovery or communication includes at least one of: first D2D discovery or communication resource set information that can be used when the user equipment performing D2D discovery or communication is served by the control node. ,
  • the method further includes:
  • the control node sends the D2D resource set information to an adjacent control node.
  • the method further includes: sending, by the control node, the D2D resource set information to the adjacent control node by using an S1 or X2 interface;
  • control node sends the D2D resource set information to the core network element or the newly added D2D control network element.
  • the method further includes:
  • the changed D2D resource set information is sent to the neighboring control node or the core network element or the newly added D2D control network element.
  • the method further includes:
  • the control node sends the D2D resource set information through an air interface broadcast.
  • the transmitting, by the control node, the D2D resource set information by using an air interface broadcast the: the control node transmitting the D2D resource set information of the neighboring control node by using an air interface broadcast; or
  • the control node broadcasts the D2D resource set information that can be used under the coverage of the cellular network through the air interface broadcast.
  • the control node further includes:
  • the step of determining, by the control node, the D2D discovery or communication scheduling resource of the D2D user equipment according to the D2D resource set information includes:
  • the control node selects a D2D discovery or communication scheduling resource of the D2D user equipment from the D2D resource set information.
  • the controlling node selects the D2D discovery or communication scheduling resource of the D2D user equipment from the D2D resource set information, including:
  • the control node selects, according to the determination result, the D2D discovery or communication scheduling resource of the D2D user equipment from the D2D resource set information.
  • the D2D resource set includes a first D2D resource set and a second D2D resource set, and the control node selects the D2D discovery or communication scheduling resource of the D2D user equipment from the D2D resource set information according to the determination result.
  • control node selects the D2D discovery or communication scheduling resource of the D2D user equipment from the first D2D resource set;
  • the control node selects the D2D discovery or communication scheduling resource of the D2D user equipment from the second D2D resource set.
  • the control node further includes:
  • the control node sends the D2D discovery or communication resource scheduling information of the D2D user equipment to the relevant neighboring control node, where the related neighboring control node includes at least one of the following: D2D discovery of the D2D user equipment or The adjacent control node to which the target D2D user equipment of the communication is connected,
  • the adjacent control node accessed by the D2D user equipment in the D2D group of the D2D discovery or communication of the D2D user equipment,
  • the D2D discovery or communication resource scheduling information includes: D2D resource allocation information and/or D2D resource configuration information.
  • the D2D resource configuration information includes D2D semi-persistent scheduling configuration information, and the D2D semi-persistent scheduling configuration information includes at least one of the following:
  • the D2D resource configuration information further includes:
  • the D2D resource allocation information includes at least one of the following:
  • the transmission attribute information includes modulation coding mode MCS information.
  • the method further includes:
  • the D2D user equipment that receives the D2D discovery or the communication resource scheduling information determines the D2D transmission. And/or receive resources.
  • the control node further includes:
  • the response message is an acknowledgement message if the D2D discovery or communication scheduling resource is available.
  • the method further includes:
  • the control node determines whether to change the D2D discovery or communication resource scheduling information of the D2D user equipment according to the received response message.
  • the determining, by the control node, whether to change the D2D discovery or communication resource scheduling information of the D2D user equipment according to the received response message comprises:
  • the control node If the response message is an acknowledgment message, the control node does not need to change the D2D user equipment.
  • the D2D discovery or communication resource scheduling information the control node, if the D2D response message of the D2D user equipment is not an acknowledgment message, the control node needs to change the D2D discovery or communication resource scheduling information of the D2D user equipment,
  • the control node sends the changed D2D discovery or communication resource scheduling information to the D2D user equipment and/or the associated neighboring control node.
  • the method further includes:
  • the control node determines the D2D communication scheduling resource of the D2D user equipment according to the D2D resource set information, or the related neighboring control node or the D2D user equipment receives the D2D discovery or communication scheduling resource information Then, the control node or the related neighboring control node or the D2D user equipment sends the D2D discovery or communication scheduling resource notification information through an air interface in a broadcast or unicast manner, the D2D discovery or communication scheduling resource notification
  • the information includes the D2D discovery or communication resource scheduling information.
  • the D2D discovery or communication scheduling resource notification information includes timing assistance information, and the timing assistance information includes:
  • the control node identification information accessed by the D2D communication sender user equipment
  • the control node identification information includes: serving cell identity information, or serving base station identity information, or control node identity information.
  • the D2D discovery or communication scheduling resource notification information includes indication information that the resource is used for data transmission or reception.
  • a D2D discovery and communication method including:
  • the D2D user equipment acquires D2D resource set information, where the D2D resource set includes a D2D discovery resource set and/or a D2D communication resource set;
  • the D2D user equipment uses the D2D communication scheduling resource to perform D2D discovery or D2D Communication.
  • the D2D device acquires the D2D resource set information from a broadcast message of a control node.
  • the step of determining, by the D2D user equipment, the D2D discovery or communication scheduling resource of the D2D user equipment according to the D2D resource set information includes:
  • the D2D user equipment selects a D2D discovery or communication scheduling resource of the D2D user equipment from the D2D resource set information.
  • the D2D user equipment selects the D2D discovery or communication scheduling resource of the D2D user equipment from the D2D resource set information, including:
  • the D2D resource set includes a first D2D resource set and a second D2D resource set
  • the control node selects the D2D discovery or communication scheduling resource of the D2D user equipment from the D2D resource set information according to the determination result.
  • the D2D user equipment selects a D2D discovery or communication scheduling resource of the D2D user equipment from the first D2D resource set;
  • the D2D user equipment selects a D2D discovery or communication scheduling resource of the D2D user equipment from the second D2D resource set.
  • the method further includes:
  • a control node After determining the D2D discovery or communication scheduling resource, the D2D user equipment sends the resource notification information by air interface broadcast or unicast.
  • a control node includes a resource acquisition unit and a resource allocation unit, where
  • the resource obtaining unit is configured to: acquire D2D resource set information, and the D2D resource set Including a D2D discovery resource set and/or a D2D communication resource set;
  • the resource allocation unit is configured to: determine a D2D discovery or communication scheduling resource of the D2D user equipment according to the D2D resource set information.
  • the control node further includes:
  • a sending unit configured to: send the D2D resource set information to another control node or a core network element or a newly added D2D control network element.
  • the control node further includes:
  • a receiving unit configured to: receive recommended or available or unavailable D2D resource information sent by other control nodes and/or core network elements and/or newly added D2D control network elements;
  • the obtaining unit is further configured to determine its own D2D resource set information according to the recommended or available or unavailable D2D resource information.
  • the control node further includes: a sending unit, configured to send the D2D resource set information to the neighboring control node.
  • control node further includes: a sending unit, configured to send the D2D resource set information by air interface broadcast.
  • control node further includes:
  • a sending unit configured to send D2D discovery or communication resource scheduling information of the D2D user equipment to an associated neighboring control node, where the related neighboring control node includes at least the following D2D discovery of the D2D user equipment or The adjacent control node to which the target D2D user equipment of the communication is connected,
  • the adjacent control node accessed by the D2D user equipment in the D2D group of the D2D discovery or communication of the D2D user equipment,
  • the adjacent control node of the control node is the adjacent control node of the control node.
  • control node further includes: a receiving unit, configured to: receive the related neighboring control node, determine whether the D2D discovery or communication scheduling resource of the D2D user equipment is available After the response message is sent.
  • a receiving unit configured to: receive the related neighboring control node, determine whether the D2D discovery or communication scheduling resource of the D2D user equipment is available After the response message is sent.
  • the resource obtaining unit is further configured to determine, according to the received response message, whether to change the D2D discovery or communication resource scheduling information of the D2D user equipment.
  • the sending unit is further configured to: after determining the D2D communication scheduling resource of the D2D user equipment according to the D2D resource set information, send the D2D discovery or communication scheduling resource through an air interface in a broadcast or unicast manner.
  • Notification information the D2D discovery or communication scheduling resource notification information includes the D2D discovery or communication resource scheduling information.
  • the embodiment of the invention further provides a computer program, comprising program instructions, when the program instruction is executed by the control node, so that the control node can execute the above method.
  • Embodiments of the present invention also provide a carrier carrying the above computer program.
  • the embodiments of the present invention can coordinate and interact with D2D discovery or communication resource information between different control nodes, and solve the problem of resource interaction negotiation and inter-UE synchronization in a scenario where multiple D2D UEs performing D2D discovery or communication are served by different control nodes. problem. BRIEF abstract
  • Figure 1 is a schematic diagram of an application mode of D2D technology
  • FIG. 2 is a schematic flow chart of a first embodiment of the present invention
  • Embodiment 3 is a schematic flow chart of Embodiment 2 according to the present invention.
  • Embodiment 4 is a schematic flow chart of Embodiment 3 according to the present invention.
  • Figure 5 is a schematic diagram of a scenario according to an embodiment 4, 5, and 6 of the present invention.
  • Embodiment 6 is a schematic flow chart of Embodiment 4 according to the present invention.
  • Embodiment 7 is a schematic flow chart of Embodiment 5 according to the present invention.
  • Figure 8 is a flow chart showing a sixth embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a control node according to Embodiment 7 of the present invention.
  • a plurality of D2D UEs that perform D2D discovery or communication may be served by different base stations (or control nodes). For example, neighboring UEs performing D2D communication are respectively located at the edge of the coverage of different base stations, but there is no prior art in this scenario. D2D discovery or communication resource allocation method.
  • the D2D UEs in the network coverage use the synchronization information sent by the base station as the synchronization reference of the D2D, but the UEs performing D2D discovery or communication are respectively served by different base stations, and the different base stations cannot be guaranteed to be synchronized (especially for FDD).
  • Base station if the UEs that do not perform D2D discovery or communication under the network coverage are respectively served by different control nodes, there may be no interaction between different control nodes to achieve synchronization. There is no solution to how to achieve synchronization between UEs performing D2D discovery or communication in this scenario.
  • embodiments of the present invention provide an inter-device discovery and communication method and system. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.
  • FIG. 2 is a flow chart of the embodiment.
  • FIG. 2 illustrates a network coverage scenario, where eNB1 and eNB2 are neighboring base stations.
  • the eNB function can be replaced by a control node, that is, a central control entity (also referred to as a central control element) served by the D2D UE. CCE).
  • the steps in the process of Figure 2 are as follows:
  • Step 201 The eNB1 obtains D2D communication resource pool information, where the D2D communication resource pool information may be obtained.
  • the OAM system is configured or configured by eNB1.
  • the eNB1 first listens to the D2D resource pool information of the neighboring base station through the air interface, or the eNB1 can obtain the D2D resource pool information of the neighboring base station by using the X2 interface message interaction.
  • the D2D communication resource pool is used for D2D communication, which may include an available resource pool for D2D communication within a cell or base station, and/or an available resource pool for inter-cell or inter-base D2D communication.
  • the inter-cell or inter-base station D2D communication resource pools configured for neighboring base stations may be the same shared resource pool, or different dedicated resource pools may be configured for each base station.
  • the dedicated resource pool of the neighboring base station may not overlap in the time domain and the frequency domain, or the time domain overlapping frequency domains do not overlap, or the frequency domain overlapping time domains do not overlap.
  • Step 202. eNB1 sends the configured D2D communication resource pool information through an X2 interface message.
  • the neighboring base station such as eNB2 in the figure
  • the X2 interface message includes: an X2 setup request message, a base station configuration update message, and the like.
  • the eNB1 may also send the configured D2D communication resource pool information to the core network element or the newly added D2D control network element through the S1 interface or the newly added interface.
  • the S1 interface message includes: an S1 setup request message, a base station configuration update message, and the like.
  • the eNB2 may reply to the D2D communication resource pool negotiation response information, and if the eNB2 determines that the D2D communication resource pool information is available, may reply the acknowledgement information; or if the eNB2 determines that the D2D communication resource pool information is unavailable (for example, , some resources have been used by eNB2), then the D2D communication resource pool information that is available or unavailable or recommended may be replied in the response message.
  • the response information can be sent through an X2 interface message, for example, an X2 setup response message, a base station configuration update acknowledgement/failure message, and the like.
  • Step 204 The eNB1 determines, according to the response message of the neighboring base station, whether the D2D communication resource pool configuration needs to be adjusted, and if necessary, reconfigures the D2D communication resource pool according to the available or unavailable or recommended D2D communication resource pool information in the response message. information.
  • the eNB1 can also adjust the D2D communication resource pool configuration according to the load status of the D2D UE it serves.
  • Step 205 If the D2D communication resource pool information of the eNB 1 is updated, the eNB 1 sends the updated D2D communication resource pool information to the neighboring base station.
  • the eNB1 sends the D2D communication resource pool information by using an air interface broadcast. If the D2D communication uses the contention resource, the D2D UE may select a resource from the D2D communication resource pool received by the broadcast for transmitting the D2D data. If the D2D communication uses a method of competing or non-competing resources, the receiving D2D UE (especially the IDLE state UE) can receive the D2D data by listening to the D2D communication resource pool received through the broadcast.
  • the present invention describes a method for D2D communication resource interaction negotiation between adjacent control nodes through the MME. It should be noted that the method of this embodiment is applicable not only to the D2D communication process but also to the D2D discovery process.
  • Figure 3 is a flow chart of the embodiment. Described in Figure 3 is a network coverage scenario, where eNB1 and eNB2 are neighboring base stations. The steps in the process of Figure 3 are as follows:
  • the eNB1 obtains D2D communication resource pool information, where the D2D communication resource pool information may be obtained.
  • the OAM system is configured or configured by eNB1.
  • the eNB1 first listens to the D2D resource pool information of the neighboring base station through the air interface, or the eNB1 can obtain the D2D resource pool information of the neighboring base station by using the X2 interface message interaction.
  • the D2D communication resource pool is used for D2D communication, which may include an available resource pool for D2D communication within a cell or a base station, and/or an available resource pool for inter-cell or inter-base station D2D communication.
  • the inter-cell or inter-base station D2D communication resource pools configured for neighboring base stations may be the same shared resource pool, or different dedicated resource pools may be configured for each base station.
  • the dedicated resource pool of the neighboring base station may not overlap in the time domain and the frequency domain, or the time domain overlapping frequency domains do not overlap, or the frequency domain overlapping time domains do not overlap.
  • Steps 302-303 For the neighboring base station that is unavailable to the X2 interface, the eNB1 sends the configured D2D communication resource pool information to the MME through the S1 interface message, and then sends the MME to the neighboring base station (such as eNB2 in the figure).
  • the S1 interface message includes: the base station configures the transmission message, the MME configures the transmission message, and the like.
  • the eNB1 may also send the configured D2D communication resource pool information to the core network element or the newly added D2D control network element through the S1 interface or the newly added interface.
  • the S1 interface message includes: an S1 establishment request message, a base station configuration update message, and the like.
  • the eNB2 may reply to the D2D communication resource pool negotiation response information, and if the eNB2 determines that the D2D communication resource pool information is available, may reply the acknowledgement information; or if the eNB2 determines that the D2D communication resource pool information is unavailable. (For example, some resources have been used by eNB2), then D2D communication resource pool information that is available or unavailable or recommended may be replied to in the response message.
  • the eNB2 sends the communication resource pool negotiation response information to the MME through the S1 interface message, and then the MME sends the message to the eNB1, where the SI interface message includes: the base station configures the transmission message, and the MME configures the transmission message. Wait.
  • Step 306 The eNB1 determines, according to the response message of the neighboring base station, whether the D2D communication resource pool configuration needs to be adjusted, and if necessary, reconfigures the D2D communication resource pool according to the available or unavailable or recommended D2D communication resource pool information in the response message. information. In addition, the eNB1 can also adjust the D2D communication resource pool configuration according to the load status of the D2D UE it serves.
  • the eNB1 sends the D2D communication resource pool information by using an air interface broadcast. If the D2D communication uses the contention resource, the D2D UE may select a resource from the D2D communication resource pool received by the broadcast for transmitting the D2D data. If the D2D communication uses a method of competing or non-competing resources, the receiving D2D UE (especially the IDLE state UE) can receive the D2D data by listening to the D2D communication resource pool received through the broadcast.
  • FIG. 4 is a flow chart of the embodiment. Described in Figure 4 is a network coverage scenario where eNB 1 and eNB 2 are neighboring base stations. The steps in the process of Figure 4 are as follows:
  • the MME configures the D2D communication resource pool information to the eNB 1.
  • the MME may configure the D2D communication resource pool information for the eNB1 through the S1 interface message, for example, the S1 setup response message, the MME configuration update message, and the like.
  • the newly added D2D control network element can also configure the D2D communication resource pool information for the base station.
  • the D2D communication resource pool is used for D2D communication, which may include an available resource pool for D2D communication within a cell or base station, and/or an available resource pool for D2D communication between cells or between base stations.
  • the inter-cell or inter-base station D2D communication resource pools configured for neighboring base stations may be the same shared resource pool, or different dedicated resource pools may be configured for each base station.
  • the dedicated resource pool of the neighboring base station may not overlap in the time domain and the frequency domain, or the time domain overlapping frequency domains do not overlap, or the frequency domain overlapping time domains do not overlap.
  • the eNB1 sends the configured D2D communication resource pool information to the neighboring base station (such as eNB2 in the figure) through the X2 interface message, where the X2 interface message includes: an X2 setup request message, a base station configuration update message, and the like.
  • the eNB1 may also send the configured D2D communication resource pool information to the core network element or the newly added D2D control network element through the S1 interface or the new interface.
  • the S1 interface message includes: an S1 setup request message, a base station configuration update message, and the like.
  • Steps 403-404 For the neighboring base stations that are not available for the X2 interface, the eNB1 sends the configured D2D communication resource pool information to the MME through the S1 interface message, and then sends the MME to the neighboring base station (such as eNB2 in the figure).
  • the S1 interface message includes: the base station configures the transmission message, and the MME is configured with Set to transfer messages, etc.
  • the eNB1 sends the D2D communication resource pool information by using an air interface broadcast. If the D2D communication uses the contention resource, the D2D UE may select a resource from the D2D communication resource pool received by the broadcast for transmitting the D2D data. If the D2D communication uses a method of competing or non-competing resources, the receiving D2D UE (especially the IDLE state UE) can receive the D2D data by listening to the D2D communication resource pool received through the broadcast.
  • FIG. 5 is a schematic diagram of a scenario of the method of the present embodiment.
  • eNB1 and eNB2 are neighboring base stations
  • UE1 and UE2 are served by eNB1, located at the cell edge
  • UE3 is served by eNB2 and also at the cell edge.
  • FIG. 6 is a flow chart of the embodiment.
  • the network coverage scenario is described in Figure 6.
  • the eNB function can be replaced by the control node, that is, the central control entity (also called central control element, CCE) served by the D2D UE.
  • the steps in the process of Figure 6 are as follows:
  • Step 601. If UE1 has D2D communication data to transmit, it sends a resource allocation request to its serving base station eNB1.
  • the resource allocation request can be sent by scheduling the request, or by caching the status.
  • the eNB1 performs resource pre-allocation for the UE1. Before the eNB1 performs the resource pre-allocation for the UE1, the eNB1 has obtained the D2D communication resource pool information configuration. For the configuration method, refer to the methods in the first, second, and third embodiments.
  • the resource pre-allocation may be performed according to the D2D communication type requested by the UE1.
  • the D2D communication type refers to whether the D2D communication is D2D communication across the cell/base station, for example, whether the UE participating in the D2D communication is served by the same cell/base station or by different cells/base stations.
  • the D2D communication resource may be selected from the D2D communication resource pool in the cell/base station for the UE1; if the base station determines that the D2D communication type is the cross-cell/base station D2D communication, the base station may The D2D communication resource is selected for the UE1 in the inter-cell/base station D2D communication resource pool.
  • the resource pools configured for the cross-cell/base station D2D communication in the neighboring base stations are the same shared resource pool.
  • the resource pool configured for D2D communication in the cell/base station in the neighboring base station is a dedicated resource. Source pool to avoid interference between D2D communications between cells/base stations.
  • the base station can perform D2D communication type judgment in the following manner:
  • the base station can maintain the D2D group identifier list of the D2D UE under the cell/base station, for example, the D2D group identifies the D2D group identifier information that the D2D UE joins when accessing the base station.
  • the neighboring base stations can exchange the D2D group identification information of the respective services through the X2 interface message. That is, the base station can maintain D2D group list information served by itself and neighboring cells/base stations.
  • the group identifier of the requested D2D communication may be carried in the request, and the base station may determine by searching the D2D group list information served by itself and the neighboring cell/base station. Whether the D2D group communication requested by the UE is within the cell/base station or D2D communication across the cell/base station.
  • the base station may further calculate a transmission range of the UE in the cell according to the geographical location and/or radio frequency parameter in the cell, and filter whether the neighboring base station in the transmission range serves the D2D communication group to determine the D2D requested by the UE. Communication type.
  • the base station can determine the D2D communication type by acquiring the serving cell/base station identification information of the target UE. Specifically, the following method may be used to obtain the serving cell/base station identification information of the target UE: a. Obtained by the D2D discovery signal, for example, by displaying the bearer in the discovery signal, or implicitly indicating the frequency domain resource by discovering the signal; b. The paging mode initiated by the base station or the D2D UE is obtained; c. obtained by querying the D2D server.
  • the eNB1 sends the resource information (also referred to as resource scheduling information) allocated for the UE1 to the relevant neighboring base station.
  • the related neighboring base station refers to the base station accessed by the target UE of the D2D communication requested by the UE1; for the D2D multicast communication, the related neighboring base station refers to the D2D of the D2D communication requested by the UE1.
  • the eNB1 may also estimate the transmission range of the UE1 according to the geographical location and the radio frequency parameter, and filter the service area and the base station with overlapping in the transmission range as related neighboring base stations.
  • the D2D communication resource scheduling information of the UE includes: D2D resource allocation information and/or D2D resource configuration information.
  • the D2D resource configuration information includes D2D semi-persistent scheduling (SPS) configuration information.
  • the D2D SPS configuration information may include: D2DS SPS air interface network temporary identifier (RNTI), D2D SPS establishment/release indication, SPS period, and the like.
  • the D2D resource configuration information may include: a D2D broadcast/multicast/unicast communication identifier, a D2D multicast communication group identifier, a D2D communication sender UE (UE1 in this embodiment) identifier, and the like.
  • the allocation information includes: D2D communication time-frequency domain resources, transmission attribute information (such as modulation coding mode MCS information).
  • the D2D communication resource scheduling information may further include indication information indicating that the resource is used for data transmission or reception.
  • the D2D communication sender UE identification information may also be used to implicitly indicate that the resource is used for data transmission or reception.
  • the D2D communication resource scheduling information does not include the sending or receiving resource indication information or the D2D communication sender UE identifier, and the D2D UE that receives the D2D communication resource scheduling information determines the D2D transmission and/or receiving resource.
  • Step 604 After receiving the D2D communication resource scheduling information, the related neighboring base station may determine whether the resource is available (such as whether it is already occupied), and reply the resource scheduling response information. If available (not occupied), the resource scheduling response information is acknowledgment information; if not available (already occupied), the resource scheduling response information may include available or recommended D2D communication resource scheduling information to the eNB1.
  • Step 605. The eNB1 determines, according to the resource scheduling response information of the neighboring base station, whether to change the D2D communication resource scheduling information of the UE1. If the response message is an acknowledgment message, the eNB1 does not need to change the D2D communication resource scheduling information of the UE1; otherwise, the eNB1 needs to change the D2D communication resource scheduling information of the UE1.
  • Step 606 The eNB1 allocates D2D communication resource scheduling information (if there is an update, it is updated).
  • the D2D communication resource scheduling information is sent to the relevant neighboring base station (eNB2 in the figure). After receiving the eNB2, the eNB2 considers that the block resource has been occupied by the neighboring base station, that is, the current unavailable state, and updates the available D2D for maintenance. Communication resource collection information;
  • Step 607. The eNB1 sends the D2D communication resource scheduling information (if there is an update, the updated D2D communication resource scheduling information) to the UE1; if the D2D communication resource scheduling information does not include the sending or receiving resource indication information or the D2D communication sender
  • the UE identity determines the D2D transmission and/or reception resources by the D2D user equipment that receives the D2D communication resource scheduling information.
  • Steps 608a-608b The eNB1 and the related neighboring base station that receives the D2D communication resource scheduling information send the resource notification information through the air interface, and the D2D broadcast multicast communication can be sent by broadcast, and the D2D unicast communication can be unicast. Sent to the target UE.
  • the resource notification information includes all or part of the content of the D2D communication resource scheduling information.
  • the non-synchronous network deployment especially the FDD base station
  • the D2D communication between the UEs under the network coverage is referenced by the synchronization signal of the base station, and the resource notification information sent by the base station may also be included.
  • Timing assistance information to achieve synchronization between the D2D UE sender and receiver.
  • the synchronization information between the two may broadcast and transmit the D2D communication resource scheduling information after the time domain and/or the frequency domain calibration; or, the neighboring base station may include the time or frequency offset information in the resource notification information; or the resource notification information
  • the serving cell/base station information of the sender UE may be included, and the synchronization signal of the serving cell/base station of the transmitting UE is obtained by the receiving UE to obtain synchronization information (or the receiving UE may obtain the neighboring cell time in advance through its own serving cell). Or frequency offset list).
  • the resource notification information sent by the eNB1 may include the serving cell/base station information of the sender UE.
  • Step 609 After receiving the resource scheduling information, the UE1 sends the resource notification information through the air interface broadcast, where the information includes timing auxiliary information (for the non-synchronized network deployment situation), where the UE1 may include the serving cell/base station information, so as to facilitate the D2D receiver UE. Synchronization with UE1 is achieved by using the synchronization signal of the serving cell/base station of UE1 as a reference.
  • the UE1 can then use the allocated resources to send D2D data.
  • UE2, UE3 can obtain the received resources by receiving the D2D communication resource pool or resource notification information and receive the D2D data sent by UE1.
  • FIG. 5 is a schematic diagram of a scenario of the method of the embodiment.
  • eNB1 and eNB2 are neighboring base stations
  • UE1 and UE2 are served by eNB1, located at the cell edge
  • UE3 is served by eNB2 and also at the cell edge.
  • UE1, UE2 and UE3 are located adjacent to each other and belong to the same D2D group.
  • the method of the embodiment is applicable not only to the D2D communication process but also to the D2D discovery process.
  • Figure 7 is a flow chart of the embodiment.
  • the network coverage scenario is described in Figure 7.
  • the eNB function can be replaced by the control node, that is, the central control element (also called central control element, CCE) served by the D2D UE.
  • CCE central control element
  • the resource allocation request can be sent by scheduling the request, or by caching the status.
  • Step 702. The eNB1 performs resource pre-allocation for the UE1. Before the eNB1 performs resource pre-allocation for the UE1, the eNB1 has obtained the D2D communication resource pool information configuration. For the configuration method, refer to the methods in the first, second, and third embodiments. Optionally, before the eNB1 performs resource pre-allocation for the UE1, the resource pre-allocation may be performed according to the D2D communication type requested by the UE1. Where D2D communication type refers to the D2D communication Whether it is D2D communication across cells/base stations, for example, whether UEs participating in the D2D communication are served by the same cell/base station or by different cells/base stations.
  • the D2D communication resource may be selected from the D2D communication resource pool in the cell/base station for the UE1; if the base station determines that the D2D communication type is the cross-cell/base station D2D communication, the base station may The D2D communication resource is selected for the UE1 in the inter-cell/base station D2D communication resource pool.
  • the resource pools configured for the cross-cell/base station D2D communication in the neighboring base stations are different dedicated resource pools.
  • a resource pool configured for D2D communication in a cell/base station in a neighboring base station is also a dedicated resource pool to avoid interference between D2D communications between cells/base stations.
  • the base station to perform the D2D communication type determination refer to the description in the fourth embodiment.
  • the eNB1 sends the resource information (also referred to as resource scheduling information) allocated for the UE1 to the relevant neighboring base station.
  • the related neighboring base station refers to the base station accessed by the target UE of the D2D communication requested by the UE1; for the D2D multicast communication, the related neighboring base station refers to the D2D of the D2D communication requested by the UE1.
  • the eNB1 may also estimate the transmission range of the UE1 according to the geographic location and the radio frequency parameter, and filter the service area and the base station with overlapping in the transmission range as related neighboring base stations.
  • the D2D communication resource scheduling information of the UE includes: D2D resource allocation information and/or D2D resource configuration information.
  • the D2D resource configuration information includes D2D semi-persistent scheduling (SPS) configuration information.
  • the D2D SPS configuration information may include: D2DS SPS Air Interface Temporary Identity (RNTI), D2D SPS setup/release indication, SPS period, and the like.
  • the D2D resource configuration information may include: a D2D broadcast/multicast/unicast communication identifier, a D2D multicast communication group identifier, a D2D communication sender UE (UE1 in this embodiment) identifier, and the like.
  • the D2D resource allocation information includes: D2D communication time-frequency domain resources, and transmission attribute information (such as modulation and coding mode MCS information).
  • the D2D communication resource scheduling information may further include indication information indicating that the resource is used for data transmission or reception.
  • the D2D communication sender UE identification information may also be used to implicitly indicate that the resource is used for data transmission or reception.
  • the D2D communication resource scheduling information does not include the sending or receiving resource indication information or the D2D communication sender UE identifier, the D2D UE receiving the D2D communication resource scheduling information determines the D2D transmission and/or receiving resource.
  • the resource pool configured for the cross-cell/base station D2D communication in the neighboring base stations is a different dedicated resource pool, if the neighboring base station cross-cell/base station D2D communication dedicated resource pool time domain or The frequency domains do not overlap, or the time domain does not overlap, and the frequency domain overlaps, and eNB1 is UE1.
  • the allocated resources do not collide with the neighboring base stations and cause interference.
  • the eNB1 does not need to negotiate with the neighboring base stations to perform resource allocation of the UE1 at this time, and only needs to inform the neighboring base stations of the allocated resource information.
  • the eNB1 still needs to negotiate with the neighboring base station to perform resource allocation of the UE1 to avoid the UE1 receiving and transmitting the D2D data at the same time (ie, the foregoing Embodiment 4). In steps 603-605).
  • Step 704. The eNB1 sends the D2D communication resource scheduling information to the UE1. If the D2D communication resource scheduling information does not include the sending or receiving resource indication information or the D2D communication sender UE identifier, the D2D user that receives the D2D communication resource scheduling information The device determines the D2D to send and/or receive resources.
  • Steps 705a-705b The eNB1 and the related neighboring base station that receives the D2D communication resource scheduling information send the resource notification information through the air interface, and the D2D broadcast multicast communication can be sent by using a broadcast mode, and the D2D unicast communication can be unicasted. Sent to the target UE.
  • the resource notification information includes all or part of the content of the D2D communication resource scheduling information.
  • the non-synchronous network deployment especially the FDD base station
  • the D2D communication between the UEs under the network coverage is referenced by the synchronization signal of the base station, and the resource notification information sent by the base station may also be included.
  • Timing assistance information to achieve synchronization between the D2D UE sender and receiver.
  • the neighboring base station knows the synchronization information with the eNB1, the D2D communication resource scheduling information after the time domain and/or the frequency domain calibration may be broadcasted.
  • the neighboring base station may include the time or frequency offset in the resource notification information.
  • the resource notification information may include the serving cell/base station information of the sender UE, and the receiving UE may monitor the synchronization signal of the serving cell/base station of the transmitting UE to obtain synchronization information (or the receiving UE may pass its own The serving cell obtains a list of neighbor cell time or frequency offsets).
  • the resource notification information sent by the eNB1 may include the serving cell/base station information of the sender UE.
  • Step 706 After receiving the resource scheduling information, the UE1 sends the resource notification information through the air interface broadcast, where the information includes timing assistance information (for the non-synchronized network deployment situation), where the UE may be included in the serving cell/base station information, so as to facilitate the D2D receiver UE. Synchronization with UE1 is achieved by using the synchronization signal of the serving cell/base station of UE1 as a reference.
  • UE1 can then send D2D data using the allocated resources, UE2, UE3 can listen to D2D
  • the communication resource pool or resource notification information acquires the receiving resource and receives the D2D data sent by the UE1.
  • FIG. 8 is a flow chart of the embodiment. The steps in the process of Figure 8 are as follows:
  • Step 801. The D2D UE acquires D2D communication resource pool information.
  • the D2D UE can obtain the D2D communication resource pool information in a pre-configured manner, or obtain the broadcast message through the receiving base station or the control node (without network coverage). If the base station or the control node obtains the D2D communication resource pool information configuration before the broadcast, the method is as described in Embodiments 1, 2, and 3.
  • Step 802.D2D UE has D2D communication data to be sent, and then selects a resource from the obtained D2D communication resource pool for transmitting D2D data.
  • the UE may determine the D2D communication type and select the corresponding resource according to the D2D communication type.
  • the D2D communication type refers to whether the D2D communication is D2D communication across the cell/base station, for example, whether the UE participating in the D2D communication is served by the same cell/base station or by different cells/base stations.
  • the D2D communication resource may be selected from the D2D communication resource pool in the cell/base station for the UE1; if the UE determines that the D2D communication type is the cross-cell/base station D2D communication, the UE may The D2D communication resource is selected for the UE1 in the cross-cell/base station D2D communication resource pool; for example, for the D2D unicast communication, because the target UE of the communication has been determined, the UE may determine the D2D by acquiring the serving cell/base station identification information of the target UE. Communication type.
  • the following method may be used to obtain the serving cell/base station identification information of the target UE: a. Obtained by the D2D discovery signal, for example, by displaying the bearer in the discovery signal, or implicitly indicating the frequency domain resource by discovering the signal; b. The paging mode initiated by the base station or the D2D UE is obtained; c. obtained by querying the D2D server.
  • the UE sends the resource notification information through the air interface broadcast after the D2D data transmission resource is selected, where the information includes the timing assistance information, where the UE may include the serving cell/base station information, so that the D2D receiver UE passes the UE1.
  • Serving cell/base station synchronization signal as a reference Synchronization with UE1 is achieved.
  • the method for competing resources is used in this embodiment. Generally, after the UE selects the contention resource, the selected communication resource information is not notified to the base station or the control node, and therefore, The base station or the control node exchanges or negotiates resource scheduling information and sends resource notification information.
  • Step 804. The UE sends D2D data on the selected D2D communication resource.
  • This embodiment provides an inter-device discovery and communication system, including:
  • the control node is configured to acquire D2D resource set information, where the D2D resource set includes a D2D discovery resource set and/or a D2D communication resource set, and determine D2D discovery or communication scheduling of the D2D user equipment according to the D2D resource set information.
  • the D2D user equipment is configured to determine, according to the D2D resource set information, a D2D discovery or communication scheduling resource of the D2D user equipment, and use the D2D communication scheduling resource to perform D2D discovery or D2D communication.
  • control node is further configured to send the D2D resource set information to another control node or a core network element or a newly added D2D control network element.
  • the system further includes other control nodes and/or core network elements and/or new D2D control network elements;
  • the other control node and/or the core network element or the newly added D2D control network element are configured to send the recommended or available or unavailable D2D resource information to the control node;
  • the control node is further configured to determine its own D2D resource set information according to the recommended or available or unavailable D2D resource information.
  • control node is further configured to send the D2D resource collection information to an adjacent control node.
  • control node is further configured to send the D2D resource set information by air interface broadcast.
  • control node is further configured to send D2D discovery or communication resource scheduling information of the D2D user equipment to an associated neighboring control node, where the related adjacent control node includes at least one of the following:
  • the neighboring control node accessed by the D2D user equipment of the D2D user equipment of the D2D user equipment,
  • the adjacent control node accessed by the D2D user equipment in the D2D group of the D2D discovery or communication of the D2D user equipment,
  • the adjacent control node of the control node is the adjacent control node of the control node.
  • the related neighboring control node is configured to determine whether the D2D discovery or communication scheduling resource of the D2D user equipment is available, and send a response message to the control node.
  • control node is further configured to determine, according to the received response message, whether to change D2D discovery or communication resource scheduling information of the D2D user equipment.
  • control node is further configured to send the D2D discovery or communication scheduling resource notification information by air interface in a broadcast or unicast manner after determining the D2D communication scheduling resource of the D2D user equipment according to the D2D resource set information.
  • the D2D discovery or communication scheduling resource notification information includes the D2D discovery or communication resource scheduling information;
  • the related neighboring control node or the D2D user equipment is further configured to send the D2D discovery or communication scheduling resource notification by air interface in a broadcast or unicast manner after receiving the D2D discovery or communication scheduling resource information. information.
  • control node includes a resource obtaining unit and a resource allocating unit, where the resource acquiring unit is configured to: acquire D2D resource set information, where the D2D resource set includes a D2D discovery resource set and/or a D2D communication resource set. ;
  • the resource allocation unit is configured to: determine a D2D discovery or communication scheduling resource of the D2D user equipment according to the D2D resource set information.
  • control node further includes: a sending unit, configured to: send the D2D resource set information to another control node or a core network element or a newly added D2D control network element.
  • control node further includes: a receiving unit, configured to: receive recommended or available or unavailable D2D resource information sent by the other control node and/or the core network element and/or the newly added D2D control network element. ;
  • the resource obtaining unit is further configured to determine its own D2D resource set information according to the recommended or available or unavailable D2D resource information.
  • the control node further includes:
  • a sending unit configured to send the D2D resource set information to the neighboring control node.
  • the control node further includes: a sending unit, configured to send the D2D resource set information by air interface broadcast.
  • control node further includes: a sending unit, configured to include the D2D user equipment neighbor control node at least one of the following:
  • the neighboring control node accessed by the D2D user equipment of the D2D user equipment of the D2D user equipment,
  • the adjacent control node accessed by the D2D user equipment in the D2D group of the D2D discovery or communication of the D2D user equipment,
  • the adjacent control node of the control node is the adjacent control node of the control node.
  • control node further includes: a receiving unit, configured to: receive a response message sent by the related neighboring control node after determining whether the D2D discovery or communication scheduling resource of the D2D user equipment is available.
  • a receiving unit configured to: receive a response message sent by the related neighboring control node after determining whether the D2D discovery or communication scheduling resource of the D2D user equipment is available.
  • the resource obtaining unit is further configured to determine, according to the received response message, whether to change the D2D discovery or communication resource scheduling information of the D2D user equipment.
  • the sending unit is further configured to: after determining the D2D communication scheduling resource of the D2D user equipment according to the D2D resource set information, send the D2D discovery or communication scheduling resource through an air interface in a broadcast or unicast manner.
  • Notification information the D2D discovery or communication scheduling resource notification information includes the D2D discovery or communication resource scheduling information.
  • the embodiment of the invention further provides a computer program, comprising program instructions, when the program instruction is executed by the control node, so that the control node can execute the above method.
  • Embodiments of the present invention also provide a carrier carrying the above computer program.
  • the control node acquires D2D resource set information, where the D2D resource set includes a D2D discovery resource set and/or a D2D communication resource set, and the control node or the D2D user equipment determines the location according to the D2D resource set information.
  • the D2D discovery or communication scheduling resource of the D2D user equipment where the D2D user equipment uses the D2D communication scheduling resource to perform D2D discovery or D2D communication.
  • the invention can coordinate and interact with D2D discovery or communication resource information between different control nodes, and solve the problem of resource interaction negotiation and synchronization between multiple D2D UEs performing D2D discovery or communication in a scenario served by different base stations.
  • the technical solution provided by the embodiments of the present invention solves the problem that D2D discovery or communication resource interaction/negotiation and D2D inter-UE synchronization in the case where multiple UEs of D2D discovery or communication are served by different base stations (or control nodes) can be different.
  • Controlling inter-node coordination and interactive D2D discovery or communication resource information can effectively reduce D2D inter-cell interference between base stations and achieve synchronization between D2D UEs, so that D2D discovery or communication served by multiple control nodes can be smoothly performed.
  • all or part of the steps of the foregoing embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the invention is not limited to any particular combination of hardware and software.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the technical solution provided by the embodiment of the present invention solves the D2D discovery or communication resource interaction/negotiation and the D2D inter-UE synchronization problem when multiple UEs in D2D discovery or communication are served by different base stations (or control nodes), and can be controlled in different situations.
  • Coordination between nodes and interactive D2D discovery or communication resource information can effectively reduce inter-base station D2D inter-cell interference and achieve synchronization between D2D UEs, so that D2D discovery or communication served by multiple control nodes can be smoothly performed.

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Abstract

本发明实施例提供了一种D2D发现及通信方法、资源分配方法和控制节点，该资源分配方法包括：控制节点获取D2D资源集合信息，所述D2D资源集合包括D2D发现资源集合和/或D2D通信资源集合；所述控制节点或D2D用户设备根据所述D2D资源集合信息确定所述D2D用户设备的D2D发现或通信调度资源。

Description

D2D发现及通信方法、 资源分配方法和控制节点 技术领域
本发明涉及移动通信领域， 尤其涉及一种设备到设备 ( Device-to-Device, D2D )发现及通信方法、 资源分配方法和控制节点。
背景技术
随着无线多媒体业务的发展， 人们对高数据速率和用户体验的需求日益 增长， 从而对传统蜂窝网络的***容量和覆盖提出了较高要求。 另一方面社 交网络、 近距离数据共享、 本地广告等应用的流行使得人们对了解附近感兴 趣的人或事物并与之通信 ( Proximity Services, 邻近服务） 的需求逐渐增加。 传统的基于小区的蜂窝网络在高数据速率以及邻近服务的支持方面存在明显 的局限性， 在这种需求背景下， 代表未来通信技术发展新方向的 D2D ( Device-to-Device , 设备到设备 )技术应运而生。 D2D技术的应用， 可以减 轻蜂窝网络的负担、 减少用户设备的电池功耗、 提高数据速率， 并改善网络 基础设施的鲁棒性， 很好地满足上述高数据速率业务和邻近服务的要求。
D2D技术可以工作在授权频段或非授权频段，允许多个支持 D2D功能的 用户设备 (即 D2D用户设备， D2D User Equipment, D2D UE )在有网络基础 设施或无网络基础设施的情况下进行直接发现 /直接通信。 D2D的应用场景主 要有三种：
1 ) UE1和 UE2在蜂窝网络的覆盖下进行数据交互， 用户面数据不经过 网络基础设施， 如图 1的模式 1 ;
2 )在弱 /无覆盖区域的 UE中继传输， 如图 1中的模式 2, 允许信号质量 较差的 UE4通过附近有网络覆盖的 UE3与网络进行通信，能帮助运营商扩展 覆盖、 提高容量；
3 )在发生地震或紧急情况， 蜂窝网络不能正常工作的情况下， 允许设备 间直接通信， 如图 1中的模式 3 , UE5, UE6和 UE7间控制面和用户面都不 经过网络基础设施而进行一跳或多跳的数据通信。 D2D技术通常包括 D2D发现技术和 D2D通信技术：
1 )D2D发现技术是指用于判断 /确定多个 D2D用户设备之间相互邻近（例 如在可进行 D2D 直接通信范围之内 )或用于判断 /确定第一用户设备邻近第 二用户设备的技术。
2 ) D2D通信技术是指 D2D用户设备之间部分或全部通信数据可以不通 过网络基础设施而直接进行通信的技术。
在有蜂窝网络覆盖的场景下， D2D发现或通信资源通常由基站进行调度 分配， 这样可以提高资源复用效率， 同时保证网络侧对 D2D发现或通信的控 制以及 D2D与蜂窝***之间扰协调的效果。 D2D UE的发现或通信资源可以 由基站动态调度， 或者基站可为 D2D UE分配半持续调度资源。 公共安全场 景下， D2D通信要求具有很强的鲁棒性， 能够在当前通信资源短缺或者拥塞 或者网络基础设施瘫痪的情况下仍然能够最大限度的提供服务。 因此公共安 全要求 D2D通信不仅在有网络覆盖场景下工作，也要求在部分覆盖以及无网 络覆盖场景下工作。 在无网络覆盖场景下， D2D用户设备可以通过自组织的 方式工作，也可以在无覆盖环境下选取一些 D2D用户设备作为控制节点来进 行 D2D通信管理控制， 这些控制节点提供类似基站的功能， 例如， 同步， 资 源管理等。
进行 D2D发现或通信的多个 D2D UE有可能由不同基站 (或控制节点 ) 服务， 例如， 进行 D2D通信的邻近 UE分别位于不同基站的覆盖范围边缘， 而相关技术中尚未有该场景下的 D2D通信资源分配方法。 通常情况下， 网络 覆盖内 D2D UE以基站发送的同步信息作为 D2D的同步参考， 但进行 D2D 发现或通信的 UE分别由不同基站服务场景下， 不同基站间并不能保证为同 步状态（特别对于 FDD基站）， 若无网络覆盖下进行 D2D发现或通信的 UE 分别由不同控制节点服务， 不同控制节点间可能并没有交互以达到同步。 该 场景下进行 D2D发现或通信的 UE之间如何达到同步尚未有解决方法。 发明内容
本发明实施例提供了一种 D2D发现及通信方法、资源分配方法和控制节 点，解决了进行 D2D发现或通信的多个 D2D UE由不同控制节点服务的场景 下资源交互协商和 UE间同步的问题。 一种 D2D发现及通信资源分配方法， 包括：
控制节点获取 D2D资源集合信息， 所述 D2D资源集合包括 D2D发现资 源集合和 /或 D2D通信资源集合；
所述控制节点根据所述 D2D资源集合信息确定 D2D用户设备的 D2D发 现或通信调度资源。 较佳地， 所述控制节点包括： 基站， 或充当 D2D控制身份的 D2D用户 设备。 较佳地， 所述控制节点获取 D2D资源集合信息包括：
所述控制节点从操作管理维护 （OAM ) ***获取 D2D资源集合信息； 或者， 所述控制节点自行配置 D2D资源集合信息；
或者， 所控制节点从核心网网元或新增 D2D控制网元配获取 D2D资源 集合信息。 较佳地， 所述控制节点自行配置 D2D资源集合信息包括：
所述控制节点根据相邻控制节点所使用的 D2D 资源信息配置自身的
D2D资源集合信息。 较佳地，所述控制节点根据相邻控制节点所使用的 D2D资源信息配置自 身的 D2D资源集合信息包括：
所述控制节点通过 S1或 X2接口或空中接口获得所述相邻控制节点所使 用的 D2D资源信息。 较佳地，所述控制节点自行配置 D2D资源集合信息的步骤之后，还包括： 所述控制节点将所述 D2D 资源集合信息发送至其它控制节点或核心网 网元或新增 D2D控制网元。 较佳地，所述控制节点将所述 D2D资源集合信息发送至其它控制节点或 核心网网元或新增 D2D控制网元的步骤之后， 还包括： 所述控制节点接收所述其它控制节点或所述核心网网元或新增 D2D控 制网元发送的推荐的或者可用或不可用的 D2D资源信息；
所述控制节点根据所述推荐的或者可用或不可用的 D2D 资源信息调整 后确定自身的 D2D资源集合信息。 较佳地， 所述 D2D资源集合信息包括用于 D2D发现或通信的资源集合 信息， 所述资源集合信息包括以下至少之一：
由载频和带宽信息标识的资源的列表；
子帧图样，
资源块（RB )信息，
资源的使用限制条件。 较佳地， 所述资源的使用限制条件包括：
下行蜂窝资源的使用限制条件为只能用于无蜂窝网络覆盖区域； 或者， D2D专用资源可同时适用于有网络覆盖和无网络覆盖区域。 较佳地， 所述用于 D2D发现或通信的资源集合信息包括以下至少之一： 进行 D2D发现或通信的用户设备都由所述控制节点服务时可使用的第 一 D2D发现或通信资源集合信息，
进行 D2D发现或通信的用户设备由所述控制节点和相邻控制节点服务 时可使用的第二 D2D发现或通信资源集合信息。 较佳地， 该方法还包括：
所述控制节点向相邻控制节点发送所述 D2D资源集合信息。 较佳地， 控制节点获取 D2D资源集合信息的步骤之后还包括： 所述控制节点通过 S1或 X2接口向相邻控制节点发送所述 D2D资源集合 信息；
或者， 所述控制节点向所述核心网网元或新增 D2D控制网元发送所述 D2D资源集合信息。 较佳地 ,所述控制节点向所述核心网网元或新增 D2D控制网元发送所述 D2D资源集合信息的步骤之后， 还包括：
所述 D2D资源集合信息发生更改后， 将更改后的 D2D资源集合信息发 送至所述相邻控制节点或核心网网元或新增 D2D控制网元。 较佳地， 该方法还包括：
所述控制节点通过空口广播发送所述 D2D资源集合信息。 较佳地， 所述控制节点通过空口广播发送所述 D2D资源集合信息包括： 所述控制节点通过空口广播发送所述相邻控制节点的 D2D 资源集合信 息； 或，
所述控制节点通过空口广播发送无蜂窝网络覆盖下可使用的 D2D 资源 集合信息。 较佳地， 所述控制节点根据所述 D2D资源集合信息确定所述 D2D用户 设备的 D2D发现或通信调度资源的步骤之前， 还包括：
所述控制节点接收到所述 D2D用户设备的 D2D发现或通信资源请求信 息，所述 D2D发现或通信资源请求信息包含在緩存状态 告或调度请求或其 它媒体接入控制 （MAC )控制单元或无线资源控制 （RRC ) 消息中。 较佳地， 所述控制节点根据所述 D2D资源集合信息确定所述 D2D用户 设备的 D2D发现或通信调度资源的步骤包括：
所述控制节点从所述 D2D 资源集合信息中选取所述 D2D用户设备的 D2D发现或通信调度资源。 较佳地， 所述控制节点从所述 D2D资源集合信息中选取所述 D2D用户 设备的 D2D发现或通信调度资源包括：
所述控制节点判断是否所述 D2D 用户设备的 D2D发现或通信的所有 D2D用户设备都由所述控制节点服务；
所述控制节点根据判断结果从所述 D2D资源集合信息中选取所述 D2D 用户设备的 D2D发现或通信调度资源。 较佳地， 所述 D2D资源集合包括第一 D2D资源集合和第二 D2D资源集 合， 所述控制节点根据判断结果从所述 D2D资源集合信息中选取所述 D2D 用户设备的 D2D发现或通信调度资源包括：
若判断结果为是，则所述控制节点从所述第一 D2D资源集合中选取所述 D2D用户设备的 D2D发现或通信调度资源；
若判断结果为否，则所述控制节点从所述第二 D2D资源集合中选取所述 D2D用户设备的 D2D发现或通信调度资源。 较佳地， 所述控制节点根据所述 D2D资源集合信息确定所述 D2D用户 设备的 D2D发现或通信调度资源的步骤之后， 还包括：
所述控制节点将所述 D2D用户设备的 D2D发现或通信资源调度信息发 送给相关的相邻控制节点， 所述相关的相邻控制节点至少包括以下之一： 所述 D2D用户设备的 D2D发现或通信的目标 D2D用户设备所接入的相 邻控制节点，
所述 D2D用户设备的 D2D发现或通信的 D2D组中 D2D用户设备所接 入的相邻控制节点，
所述控制节点的相邻控制节点。 较佳地，所述 D2D发现或通信资源调度信息包括： D2D资源分配信息和 /或 D2D资源配置信息。 较佳地， 所述 D2D资源配置信息包括 D2D半持续调度配置信息， 所述 D2D半持续调度配置信息包括以下至少之一：
D2D半持续调度空口网络临时标识， D2D半持续调度建立 /释放指示，半 持续调度周期。 较佳地， 所述 D2D资源配置信息还包括：
D2D广播 /组播 /单播通信标识， 或者，
D2D组播通信组标识， 或者，
D2D发现或通信发送方用户设备标识。 较佳地， 所述 D2D资源分配信息至少包括以下之一：
D2D时频域资源信息，
传输属性信息，
所述传输属性信息包括调制编码方式 MCS信息。
数据发送或接收的指示信息。 较佳地， 该方法还包括：
若所述 D2D发现或通信资源调度信息中不包含发送或接收资源指示信 息， 或 D2D发现或通信发送方用户设备标识， 则由接收所述 D2D发现或通 信资源调度信息的 D2D用户设备确定 D2D发送和 /或接收资源。 较佳地， 所述控制节点将所述 D2D用户设备的 D2D发现或通信资源调 度信息发送给相关的相邻控制节点的步骤之后， 还包括：
接收所述相关的相邻控制节点在判断所述 D2D用户设备的 D2D发现或 通信调度资源是否可用后发送的响应消息。
较佳地， 若所述 D2D发现或通信调度资源可用， 则所述响应消息为确认 消息； 和 /或，
若所述 D2D发现或通信调度资源不可用，则所述响应消息为可用的或推 荐的 D2D发现或通信资源调度信息。 较佳地， 所述相关的相邻控制节点发送响应消息给所述控制节点的步骤 之后， 还包括：
所述控制节点根据所接收的响应消息确定是否更改所述 D2D用户设备 的 D2D发现或通信资源调度信息。 较佳地，所述控制节点根据所接收的响应消息确定是否更改所述 D2D用 户设备的 D2D发现或通信资源调度信息包括：
若响应消息为确认消息，则所述控制节点不需要更改所述 D2D用户设备 的 D2D发现或通信资源调度信息，所述控制节点将所述 D2D用户设备的 D2D 若响应消息不是确认消息，所述控制节点需要更改所述 D2D用户设备的 D2D发现或通信资源调度信息，所述控制节点将更改后的 D2D发现或通信资 源调度信息发送给所述 D2D用户设备和 /或相关的相邻控制节点。 较佳地， 该方法还包括：
所述控制节点根据所述 D2D 资源集合信息确定所述 D2D用户设备的 D2D通信调度资源后，或所述相关的相邻控制节点或所述 D2D用户设备接收 到所述 D2D发现或通信调度资源信息之后，所述控制节点或所述相关的相邻 控制节点或所述 D2D用户设备以广播或单播方式通过空口发送所述 D2D发 现或通信调度资源通知信息，所述 D2D发现或通信调度资源通知信息包含所 述 D2D发现或通信资源调度信息。 较佳地， 所述 D2D发现或通信调度资源通知信息包含定时辅助信息， 所 述定时辅助信息包括：
时域和 /或频域偏移信息， 或者，
所述 D2D通信发送方用户设备所接入的控制节点标识信息；
所述控制节点标识信息包括： 服务小区标识信息， 或服务基站标识信息， 或控制节点标识信息。 较佳地，所述 D2D发现或通信调度资源通知信息中包含所述资源用于数 据发送或接收的指示信息。 一种 D2D发现及通信方法， 包括：
D2D用户设备获取 D2D资源集合信息，所述 D2D资源集合包括 D2D发 现资源集合和 /或 D2D通信资源集合；
所述 D2D用户设备根据所述 D2D资源集合信息确定所述 D2D用户设备 的 D2D发现或通信调度资源；
所述 D2D用户设备使用所述 D2D通信调度资源进行 D2D发现或 D2D 通信。 较佳地， 所述 D2D设备是从控制节点的广播消息中获取所述 D2D资源 集合信息。 较佳地， 所述 D2D用户设备根据所述 D2D资源集合信息确定所述 D2D 用户设备的 D2D发现或通信调度资源的步骤包括：
所述 D2D用户设备从所述 D2D资源集合信息中选取所述 D2D用户设备 的 D2D发现或通信调度资源。 较佳地， 所述 D2D用户设备从所述 D2D资源集合信息中选取所述 D2D 用户设备的 D2D发现或通信调度资源包括：
所述 D2D用户设备判断是否所述 D2D用户设备的 D2D发现或通信的所 有 D2D用户设备都由所述控制节点服务；
所述 D2D用户设备根据判断结果从所述 D2D资源集合信息中选取所述 D2D用户设备的 D2D发现或通信调度资源。 较佳地， 所述 D2D资源集合包括第一 D2D资源集合和第二 D2D资源集 合， 所述控制节点根据判断结果从所述 D2D资源集合信息中选取所述 D2D 用户设备的 D2D发现或通信调度资源包括：
若判断结果为是， 则所述 D2D用户设备从所述第一 D2D资源集合中选 取所述 D2D用户设备的 D2D发现或通信调度资源；
若判断结果为否， 则所述 D2D用户设备从所述第二 D2D资源集合中选 取所述 D2D用户设备的 D2D发现或通信调度资源。 较佳地， 该方法还包括：
确定 D2D发现或通信调度资源之后， 所述 D2D用户设备通过空口广播 或单播发送资源通知信息。 一种控制节点， 包括资源获取单元和资源分配单元， 其中，
所述资源获取单元设置为： 获取 D2D资源集合信息， 所述 D2D资源集 合包括 D2D发现资源集合和 /或 D2D通信资源集合；
所述资源分配单元设置为： 根据所述 D2D资源集合信息确定所述 D2D 用户设备的 D2D发现或通信调度资源。 较佳地， 该控制节点还包括：
发送单元， 其设置为： 将所述 D2D资源集合信息发送至其它控制节点或 核心网网元或新增 D2D控制网元。 较佳地， 该控制节点还包括：
接收单元，其设置为：接收其它控制节点和 /或核心网网元和 /或新增 D2D 控制网元发送的推荐的或者可用或不可用的 D2D资源信息；
所述获取单元，还设置为根据所述推荐的或者可用或不可用的 D2D资源 信息调整后确定自身的 D2D资源集合信息。 较佳地， 该控制节点还包括： 发送单元， 其设置为向相邻控制节点发送 所述 D2D资源集合信息。
较佳地， 该控制节点还包括： 发送单元， 其设置为通过空口广播发送所 述 D2D资源集合信息。 较佳地， 该控制节点还包括：
发送单元， 其设置为将所述 D2D用户设备的 D2D发现或通信资源调度 信息发送给相关的相邻控制节点， 所述相关的相邻控制节点至少包括以下之 所述 D2D用户设备的 D2D发现或通信的目标 D2D用户设备所接入的相 邻控制节点，
所述 D2D用户设备的 D2D发现或通信的 D2D组中 D2D用户设备所接 入的相邻控制节点，
所述控制节点的相邻控制节点。
较佳地， 该控制节点还包括： 接收单元， 其设置为： 接收所述相关的相 邻控制节点在判断所述 D2D用户设备的 D2D发现或通信调度资源是否可用 后， 发送的响应消息。
较佳地， 所述资源获取单元， 还设置为根据所接收的响应消息确定是否 更改所述 D2D用户设备的 D2D发现或通信资源调度信息。
较佳地， 所述发送单元， 还设置为： 在根据所述 D2D资源集合信息确定 所述 D2D用户设备的 D2D通信调度资源后以广播或单播方式通过空口发送 所述 D2D发现或通信调度资源通知信息， 所述 D2D发现或通信调度资源通 知信息包含所述 D2D发现或通信资源调度信息。
本发明实施例还提供一种计算机程序， 包括程序指令， 当该程序指令被 控制节点执行时， 使得该控制节点可执行上述方法。
本发明实施例还提供一种载有上述计算机程序的载体。
本发明实施例实现了能在不同控制节点间协调以及交互 D2D发现或通 信资源信息，解决了进行 D2D发现或通信的多个 D2D UE由不同控制节点服 务的场景下资源交互协商和 UE间同步的问题。 附图概述
图 1是 D2D技术应用模式示意图；
图 2是根据本发明的实施例一的流程示意图；
图 3是根据本发明的实施例二的流程示意图；
图 4是根据本发明的实施例三的流程示意图；
图 5是根据本发明的实施例四、 五、 六的场景示意图；
图 6是根据本发明的实施例四的流程示意图；
图 7是根据本发明的实施例五的流程示意图；
图 8是根据本发明的实施例六的流程示意图；
图 9是本发明实施例七的控制节点的结构示意图。
本发明的较佳实施方式 进行 D2D发现或通信的多个 D2D UE有可能由不同基站（或控制节点） 服务， 例如， 进行 D2D通信的邻近 UE分别位于不同基站的覆盖范围边缘， 而现有技术中尚未有该场景下的 D2D发现或通信资源分配方法。通常情况下， 网络覆盖内 D2D UE以基站发送的同步信息作为 D2D的同步参考， 但进行 D2D发现或通信的 UE分别由不同基站服务场景下， 不同基站间并不能保证 为同步状态 （特别对于 FDD基站） ， 若无网络覆盖下进行 D2D发现或通信 的 UE分别由不同控制节点服务， 不同控制节点间可能并没有交互以达到同 步。该场景下进行 D2D发现或通信的 UE之间如何达到同步尚未有解决方法。
为了解决上述问题， 本发明的实施例提供了一种设备间发现及通信方法 和***。 下文中将结合附图对本发明的实施例进行详细说明。 需要说明的是， 在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
实施例一
本实施例描述的是相邻控制节点间直接进行 D2D通信资源交互协商的 方法。 需要注意的是， 本实施例方法不仅适用于 D2D通信过程中， 还同样适 用于 D2D发现过程中。 图 2为本实施例的流程图。 图 2中描述的是有网络覆 盖场景， 其中 eNBl和 eNB2为相邻基站， 无网络覆盖时， eNB功能可由控制 节点替代， 即由 D2D UE 充当的中心控制实体（也可称为 central control element,CCE ) 。 图 2流程中步骤如下：
步骤 201.eNBl获得 D2D通信资源池信息，该 D2D通信资源池信息可由
OAM***配置， 或者由 eNBl 自行配置。 可选的， 在 eNBl 自行配置之前， eNBl先通过空口监听相邻基站的 D2D资源池信息， 或者， eNBl可通过 X2 接口消息交互获得相邻基站的 D2D资源池信息。该 D2D通信资源池用于 D2D 通信， 其中可包括小区或基站内 D2D通信的可用资源池， 和 /或小区间或基 站间 D2D通信的可用资源池。 为相邻基站配置的小区间或基站间 D2D通信 资源池可以为相同的共享资源池，或者为每个基站配置不相同的专用资源池。 相邻基站的专用资源池可时域和频域都不重叠， 或者时域重叠频域不重叠， 或者频域重叠时域不重叠。
步骤 202.eNBl将所配置的 D2D通信资源池信息通过 X2接口消息发送 给相邻基站（如图中 eNB2 ) , 其中 X2接口消息包括： X2建立请求消息， 基站配置更新消息等。 eNBl还可将所配置的 D2D通信资源池信息通过 S1接 口或新增接口发送至核心网网元或新增 D2D控制网元。 其中 S 1接口消息包 括： S1建立请求消息， 基站配置更新消息等。
步骤 203.可选的， eNB2可回复 D2D通信资源池协商响应信息， 若 eNB2 确定该 D2D通信资源池信息可用， 则可回复确认信息； 或者， 若 eNB2确定 该 D2D通信资源池信息不可用 （例如， 部分资源已被 eNB2所使用） ， 则可 在响应消息中回复可用或不可用或推荐的 D2D通信资源池信息。该响应信息 可通过 X2接口消息发送， 例如， X2建立响应消息， 基站配置更新确认 /失败 消息等。
步骤 204. eNBl根据相邻基站的响应消息确定是否需要调整 D2D通信资 源池配置， 若需要， 则才艮据响应消息中的可用或不可用或推荐的 D2D通信资 源池信息重新配置 D2D通信资源池信息。 另外， eNBl还可以根据其服务的 D2D UE的负荷状况自行调整 D2D通信资源池配置。
步骤 205.若 eNB 1的 D2D通信资源池信息有更新，则 eNB 1将更新的 D2D 通信资源池信息发送给相邻基站。
步骤 206. 可选的， eNBl通过空口广播发送 D2D通信资源池信息。 若 D2D通信釆用竟争资源的方式， D2D UE可从广播接收的 D2D通信资源池中 选取资源用于发送 D2D数据。 若 D2D通信釆用竟争或非竟争资源的方式， 接收方 D2D UE (特别是 IDLE态 UE )可通过监听通过广播接收的 D2D通信 资源池来接收 D2D数据。
实施例二
本发明描述的是相邻控制节点间通过 MME进行 D2D通信资源交互协商 的方法。 需要注意的是， 本实施例方法不仅适用于 D2D通信过程中， 还同样 适用于 D2D发现过程中。 图 3为本实施例的流程图。 图 3中描述的是有网络 覆盖场景， 其中 eNBl和 eNB2为相邻基站。 图 3流程中步骤如下：
步骤 301.eNBl获得 D2D通信资源池信息，该 D2D通信资源池信息可由 OAM***配置， 或者由 eNBl 自行配置。 可选的， 在 eNBl 自行配置之前， eNBl先通过空口监听相邻基站的 D2D资源池信息， 或者， eNBl可通过 X2 接口消息交互获得相邻基站的 D2D资源池信息。该 D2D通信资源池用于 D2D 通信， 其中可包括小区或基站内 D2D通信的可用资源池， 和 /或小区间或基 站间 D2D通信的可用资源池。 为相邻基站配置的小区间或基站间 D2D通信 资源池可以为相同的共享资源池，或者为每个基站配置不相同的专用资源池。 相邻基站的专用资源池可时域和频域都不重叠， 或者时域重叠频域不重叠， 或者频域重叠时域不重叠。
步骤 302-303.对于 X2接口不可用的相邻基站， eNBl将所配置的 D2D通 信资源池信息通过 S1接口消息先发送至 MME, 再由 MME发送至相邻基站 (如图中 eNB2 ) , 其中 S1接口消息包括： 基站配置传输消息， MME配置 传输消息等。 eNBl还可将所配置的 D2D通信资源池信息通过 S1接口或新增 接口发送至核心网网元或新增 D2D控制网元。 其中 S1接口消息包括： S1建 立请求消息， 基站配置更新消息等。
步骤 304-305.可选的， eNB2可回复 D2D通信资源池协商响应信息， 若 eNB2确定该 D2D通信资源池信息可用， 则可回复确认信息； 或者， 若 eNB2 确定该 D2D通信资源池信息不可用 （例如， 部分资源已被 eNB2所使用） ， 则可在响应消息中回复可用或不可用或推荐的 D2D通信资源池信息。 由于 eNBl和 eNB2间的 X2接口不可用 , eNB2将通信资源池协商响应信息通过 S1接口消息先发送至 MME, 再由 MME发送至 eNBl , 其中 SI接口消息包 括： 基站配置传输消息， MME配置传输消息等。
步骤 306. eNBl根据相邻基站的响应消息确定是否需要调整 D2D通信资 源池配置， 若需要， 则才艮据响应消息中的可用或不可用或推荐的 D2D通信资 源池信息重新配置 D2D通信资源池信息。 另外， eNBl还可以根据其服务的 D2D UE的负荷状况自行调整 D2D通信资源池配置。
步骤 307-308.若 eNBl的 D2D通信资源池信息有更新， 则 eNBl将更新 的 D2D通信资源池信息发送给相邻基站。 由于 eNBl和 eNB2间的 X2接口 不可用， eNBl 将更新的 D2D通信资源池信息通过 S1 接口消息先发送至 MME,再由 MME发送至 eNB2,其中 S1接口消息包括：基站配置传输消息， MME配置传输消息等。
步骤 309. 可选的， eNBl通过空口广播发送 D2D通信资源池信息。 若 D2D通信釆用竟争资源的方式， D2D UE可从广播接收的 D2D通信资源池中 选取资源用于发送 D2D数据。 若 D2D通信釆用竟争或非竟争资源的方式， 接收方 D2D UE (特别是 IDLE态 UE )可通过监听通过广播接收的 D2D通信 资源池来接收 D2D数据。
实施例三
本实施例描述的是相邻控制节点间直接进行 D2D通信资源交互协商的 方法。 需要注意的是， 本实施例方法不仅适用于 D2D通信过程中， 还同样适 用于 D2D发现过程中。 图 4为本实施例的流程图。 图 4中描述的是有网络覆 盖场景， 其中 eNB 1和 eNB2为相邻基站。 图 4流程中步骤如下：
步骤 401.MME给 eNB 1配置 D2D通信资源池信息。 MME可通过 S 1接 口消息为 eNBl配置 D2D通信资源池信息， 例如， S1建立响应消息， MME 配置更新消息等。 另外， 新增 D2D控制网元也可以为基站配置 D2D通信资 源池信息。该 D2D通信资源池用于 D2D通信，其中可包括小区或基站内 D2D 通信的可用资源池， 和 /或小区间或基站间 D2D通信的可用资源池。 为相邻 基站配置的小区间或基站间 D2D通信资源池可以为相同的共享资源池，或者 为每个基站配置不相同的专用资源池。 相邻基站的专用资源池可时域和频域 都不重叠， 或者时域重叠频域不重叠， 或者频域重叠时域不重叠。
步骤 402.eNBl将所配置的 D2D通信资源池信息通过 X2接口消息发送 给相邻基站（如图中 eNB2 ) , 其中 X2接口消息包括： X2建立请求消息， 基站配置更新消息等。 eNBl还可将所配置的 D2D通信资源池信息通过 S1接 口或新增接口发送至核心网网元或新增 D2D控制网元。 其中 S 1接口消息包 括： S1建立请求消息， 基站配置更新消息等。
步骤 403-404. 对于 X2接口不可用的相邻基站， eNBl将所配置的 D2D 通信资源池信息通过 S1接口消息先发送至 MME, 再由 MME发送至相邻基 站（如图中 eNB2 ) , 其中 S1接口消息包括： 基站配置传输消息， MME配 置传输消息等。
步骤 405. 可选的， eNBl通过空口广播发送 D2D通信资源池信息。 若 D2D通信釆用竟争资源的方式， D2D UE可从广播接收的 D2D通信资源池中 选取资源用于发送 D2D数据。 若 D2D通信釆用竟争或非竟争资源的方式， 接收方 D2D UE (特别是 IDLE态 UE )可通过监听通过广播接收的 D2D通信 资源池来接收 D2D数据。
实施例四
本实施例描述的是由多个基站服务的 D2D通信第一种方法， 图 5为本实 施例方法的场景示意图。 如图 5所示， eNBl和和 eNB2为相邻基站， UE1和 UE2由 eNBl服务， 位于小区边缘， UE3由 eNB2服务， 也位于小区边缘。
UE1,UE2和 UE3位置邻近， 并都属于同一个 D2D组。 需要注意的是， 本实 施例方法不仅适用于 D2D通信过程中，还同样适用于 D2D发现过程中。 图 6 为本实施例的流程图。 图 6中描述的是有网络覆盖场景，无网络覆盖时， eNB 功能可由控制节点替代，即由 D2D UE充当的中心控制实体（也可称为 central control element,CCE ) 。 该图 6流程中步骤如下：
步骤 601.UE1有 D2D通信数据要发送， 则向其服务基站 eNBl发送资源 分配请求。 该资源分配请求可通过调度请求， 或緩存状态 ^艮告发送。
步骤 602. eNBl为 UE1进行资源预分配。 在 eNBl为 UE1进行资源预分 配之前， eNBl 已获得 D2D通信资源池信息配置， 配置方法参见实施例一、 二、 三中所述方法。可选的， eNBl为 UE1进行资源预分配之前， 可根据 UE1 所请求的 D2D通信类型进行资源预分配。 其中 D2D通信类型指该 D2D通信 是否为跨小区 /基站的 D2D通信， 例如， 参与该 D2D通信的 UE是否都由同 一个小区 /基站服务， 还是由不同的小区 /基站服务。 若基站判断 D2D通信类 型为小区 /基站内 D2D通信， 则可从小区 /基站内 D2D通信资源池中为 UE1 选取 D2D通信资源； 若基站判断 D2D通信类型为跨小区 /基站 D2D通信， 则 可从跨小区 /基站 D2D通信资源池中为 UE1选取 D2D通信资源；该实施例中， 相邻基站中为跨小区 /基站 D2D通信配置的资源池为相同的共享资源池。 而 通常情况下， 相邻基站中为小区 /基站内 D2D通信配置的资源池为专用的资 源池， 以避免小区 /基站间的 D2D通信之间干扰。
基站可通过以下方式进行 D2D通信类型判断：
1 )对于 D2D组通信，基站可维护小区 /基站下 D2D UE的 D2D组标识列 表， 如 D2D UE接入该基站时上报其加入的 D2D组标识信息。 并且相邻基站 间可通过 X2接口消息交互各自服务的 D2D组标识信息。 也即基站处可维护 其自身和相邻小区 /基站所服务 D2D组列表信息。 当 UE有 D2D数据要发送 并向基站发送资源分配请求时，可在该请求中携带所请求的 D2D通信的组标 识， 基站可通过检索其自身和相邻小区 /基站所服务 D2D组列表信息判断该 UE请求的 D2D组通信是否为小区 /基站内， 还是跨小区 /基站 D2D通信。 基 站还可根据请求资源分配的 UE在小区中所处的地理位置和 /或射频参数计算 其发送范围，并筛选该发送范围内的相邻基站是否服务该 D2D通信组来判断 该 UE请求的 D2D通信类型。
2 )对于 D2D单播通信， 由于通信的目标 UE已确定， 基站可通过获取 目标 UE的服务小区 /基站标识信息的方法来判断 D2D通信类型。 具体的， 可 有以下方法获取目标 UE的服务小区 /基站标识信息： a.通过 D2D发现信号获 得， 例如， 通过发现信号中显示携带， 或者通过发现信号时频域资源隐式指 示； b.通过基站或 D2D UE发起的寻呼方式获得； c.通过向 D2D服务器查询 的方式获得。
步骤 603.eNBl将为 UE1分配的资源信息 （也称为资源调度信息）发送 给相关的相邻基站。 具体的， 对于 D2D单播通信， 相关的相邻基站指 UE1 所请求的 D2D通信的目标 UE所接入的基站；对于 D2D组播通信，相关的相 邻基站指 UE1所请求的 D2D通信的 D2D组中 D2D UE所接入的基站。 eNBl 还可根据 UE1的地理位置和射频参数估算其发送范围， 将服务区域与发送范 围内有重叠的基站筛选为相关的相邻基站。 具体的， UE的 D2D通信资源调 度信息包括： D2D资源分配信息和 /或 D2D资源配置信息。 其中 D2D资源配 置信息包括 D2D半持续调度（ SPS )配置信息。而 D2D SPS配置信息可包括： D2DS SPS空口网络临时标识 (RNTI), D2D SPS建立 /释放指示， SPS周期等。 另夕卜， D2D资源配置信息可包括： D2D广播 /组播 /单播通信标识， D2D组播 通信组标识， D2D通信发送方 UE (该实施例中 UE1 )标识等。 而 D2D资源 分配信息包括： D2D通信时频域资源， 传输属性信息（如调制编码方式 MCS 信息） 。 D2D通信资源调度信息中还可包含指示该资源用于数据发送或接收 的指示信息。 或者， D2D通信发送方 UE标识信息也可用于隐式指示该资源 用于数据发送或接收。 或者， D2D通信资源调度信息中不包含发送或接收资 源指示信息或 D2D通信发送方 UE标识，则由接收该 D2D通信资源调度信息 的 D2D UE确定 D2D发送和 /或接收资源。
步骤 604.相关的相邻基站接收到 D2D通信资源调度信息后，可判断该资 源是否可用 （如是否已经被占用） ， 并回复资源调度响应信息。 若可用 （未 被占用） ， 则资源调度响应信息为确认信息； 若不可用 （已经被占用） ， 则 资源调度响应信息中可包含可用的或推荐的 D2D通信资源调度信息给 eNBl。
步骤 605. eNBl根据相邻基站的资源调度响应信息判断是否更改 UE1的 D2D通信资源调度信息。 若响应消息为确认消息， 则 eNBl不需要更改 UE1 的 D2D通信资源调度信息； 否则， eNBl需要更改 UE1的 D2D通信资源调 度信息，
步骤 606. eNBl将 D2D通信资源调度信息 （若有更新， 则为更新后的
D2D通信资源调度信息 )发送给相关的相邻基站（图中为 eNB2 ) , eNB2接 收后则认为该块资源已被相邻基站占用， 即为当前不可用状态， 并更新其维 护的可用的 D2D通信资源集合信息；
步骤 607. eNBl将 D2D通信资源调度信息 （若有更新， 则为更新后的 D2D通信资源调度信息 )发送给 UE1； 若 D2D通信资源调度信息中不包含发 送或接收资源指示信息或 D2D通信发送方 UE标识，则由接收所述 D2D通信 资源调度信息的 D2D用户设备确定 D2D发送和 /或接收资源。
步骤 608a-608b. eNBl和接收到上述 D2D通信资源调度信息的相关相邻 基站通过空口发送资源通知信息，对于 D2D广播组播通信可通过广播方式发 送， 对于 D2D单播通信可釆用单播方式发送于目标 UE。 资源通知信息中包 含 D2D通信资源调度信息中全部或部分内容。 在非同步网络部署下（特别是 FDD基站 ) , 即相邻基站间不同步， 由于有网络覆盖下 UE之间的 D2D通信 以基站的同步信号作为参考， 基站发送的资源通知信息中还可包含定时辅助 信息以实现 D2D UE发送方与接收方之间的同步。 相邻基站若知道与 eNBl 之间的同步信息， 则可广播发送经过时域和 /或频域校准后的 D2D通信资源 调度信息； 或者， 相邻基站可在资源通知信息中包含时间或频率偏移信息； 或者资源通知信息中可包含发送方 UE的服务小区 /基站信息， 由接收方 UE 自行监听发送方 UE的服务小区 /基站的同步信号获得同步信息 （或者接收方 UE可事先通过自身的服务小区获得相邻小区时间或频率 offset列表）。 类似 的， eNBl发送的资源通知信息中可包含发送方 UE的服务小区 /基站信息。
步骤 609.UE1接收资源调度信息后通过空口广播发送资源通知信息， 该 信息中包含定时辅助信息（针对非同步网络部署情况） ， 其中可包含 UE1的 服务小区 /基站信息， 以便于 D2D接收方 UE通过 UE1的服务小区 /基站的同 步信号作为参考达到与 UE1的同步。
之后 UE1可使用所分配的资源发送 D2D数据， UE2,UE3可通过监听 D2D 通信资源池或资源通知信息获取接收资源并接收 UE1发送的 D2D数据。
实施例五
本实施例描述的是由多个基站服务的 D2D通信第二种方法， 图 5为本实 施例方法的场景示意图。 如图 5所示， eNBl和和 eNB2为相邻基站， UE1和 UE2由 eNBl服务， 位于小区边缘， UE3由 eNB2服务， 也位于小区边缘。 UE1,UE2和 UE3位置邻近， 并都属于同一个 D2D组。 需要注意的是， 本实 施例方法不仅适用于 D2D通信过程中，还同样适用于 D2D发现过程中。 图 7 为本实施例的流程图。 图 7中描述的是有网络覆盖场景，无网络覆盖时， eNB 功能可由控制节点替代，即由 D2D UE充当的中心控制实体（也可称为 central control element,CCE ) 。 该图 7流程中步骤如下：
步骤 701.UE1有 D2D通信数据要发送， 则向其服务基站 eNBl发送资源 分配请求。 该资源分配请求可通过调度请求， 或緩存状态 ^艮告发送。
步骤 702. eNBl为 UE1进行资源预分配。 在 eNBl为 UE1进行资源预分 配之前， eNBl 已获得 D2D通信资源池信息配置， 配置方法参见实施例一、 二、三中所述方法。可选的， eNBl为 UE1进行资源预分配之前， 可根据 UE1 所请求的 D2D通信类型进行资源预分配。 其中 D2D通信类型指该 D2D通信 是否为跨小区 /基站的 D2D通信， 例如， 参与该 D2D通信的 UE是否都由同 一个小区 /基站服务， 还是由不同的小区 /基站服务。 若基站判断 D2D通信类 型为小区 /基站内 D2D通信， 则可从小区 /基站内 D2D通信资源池中为 UE1 选取 D2D通信资源； 若基站判断 D2D通信类型为跨小区 /基站 D2D通信， 则 可从跨小区 /基站 D2D通信资源池中为 UE1选取 D2D通信资源；该实施例中， 相邻基站中为跨小区 /基站 D2D通信配置的资源池为不相同的专用的资源池。 通常情况下， 相邻基站中为小区 /基站内 D2D通信配置的资源池也为专用的 资源池， 以避免小区 /基站间的 D2D通信之间干扰。 基站进行 D2D通信类型 判断的方法参见实施例四中描述。
步骤 703.eNBl将为 UE1分配的资源信息 （也称为资源调度信息 )发送 给相关的相邻基站。 具体的， 对于 D2D单播通信， 相关的相邻基站指 UE1 所请求的 D2D通信的目标 UE所接入的基站；对于 D2D组播通信，相关的相 邻基站指 UE1所请求的 D2D通信的 D2D组中 D2D UE所接入的基站。 eNBl 还可根据 UE1的地理位置和射频参数估算其发送范围， 将服务区域与发送范 围内有重叠的基站筛选为相关的相邻基站。 具体的， UE的 D2D通信资源调 度信息包括： D2D资源分配信息和 /或 D2D资源配置信息。 其中 D2D资源配 置信息包括 D2D半持续调度（ SPS )配置信息。而 D2D SPS配置信息可包括： D2DS SPS空口网络临时标识 (RNTI), D2D SPS建立 /释放指示， SPS周期等。 另夕卜， D2D资源配置信息可包括： D2D广播 /组播 /单播通信标识， D2D组播 通信组标识， D2D通信发送方 UE (该实施例中 UE1 )标识等。 而 D2D资源 分配信息包括： D2D通信时频域资源， 传输属性信息（如调制编码方式 MCS 信息） 。 D2D通信资源调度信息中还可包含指示该资源用于数据发送或接收 的指示信息。 或者， D2D通信发送方 UE标识信息也可用于隐式指示该资源 用于数据发送或接收。 或者， D2D通信资源调度信息中不包含发送或接收资 源指示信息或 D2D通信发送方 UE标识，则由接收该 D2D通信资源调度信息 的 D2D UE确定 D2D发送和 /或接收资源。
需要注意的是， 此实施例中相邻基站中为跨小区 /基站 D2D通信配置的 资源池为不相同的专用的资源池， 若相邻基站的跨小区 /基站 D2D通信专用 资源池时域或频域都不重叠，或者时域不重叠，频域有重叠，则 eNBl为 UE1 分配的资源不会与相邻基站冲突并产生干扰， eNBl此时不需要与相邻基站协 商进行 UE1的资源分配， 只需要将其分配的资源信息告知相邻基站。 但若相 邻基站的跨小区 /基站 D2D通信专用资源池时域有重叠，频域不重叠，则 eNBl 为 UE1分配的资源虽然不会与相邻基站冲突并产生干扰， 但由于 D2D UE只 能以半双工方式工作， 即不能同时发送和接收 D2D数据， 这种情况下 eNBl 还是需要与相邻基站协商进行 UE1的资源分配以避免 UE1的同时接收和发送 D2D数据 (即如上述实施例 4中步骤 603-605中所述 ) 。
步骤 704. eNBl将 D2D通信资源调度信息发送给 UE1 ; 若 D2D通信资 源调度信息中不包含发送或接收资源指示信息或 D2D通信发送方 UE标识， 则由接收所述 D2D通信资源调度信息的 D2D用户设备确定 D2D发送和 /或接 收资源。
步骤 705a-705b. eNBl和接收到上述 D2D通信资源调度信息的相关相邻 基站通过空口发送资源通知信息，对于 D2D广播组播通信可通过广播方式发 送， 对于 D2D单播通信可釆用单播方式发送于目标 UE。 资源通知信息中包 含 D2D通信资源调度信息中全部或部分内容。 在非同步网络部署下（特别是 FDD基站 ) , 即相邻基站间不同步， 由于有网络覆盖下 UE之间的 D2D通信 以基站的同步信号作为参考， 基站发送的资源通知信息中还可包含定时辅助 信息以实现 D2D UE发送方与接收方之间的同步。 相邻基站若知道与 eNBl 之间的同步信息， 则可广播发送经过时域和 /或频域校准后的 D2D通信资源 调度信息； 或者， 相邻基站可在资源通知信息中包含时间或频率偏移信息； 或者资源通知信息中可包含发送方 UE的服务小区 /基站信息， 由接收方 UE 自行监听发送方 UE的服务小区 /基站的同步信号获得同步信息 （或者接收方 UE可事先通过自身的服务小区获得相邻小区时间或频率 offset列表）。 类似 的， eNBl发送的资源通知信息中可包含发送方 UE的服务小区 /基站信息。
步骤 706.UE1接收资源调度信息后通过空口广播发送资源通知信息， 该 信息中包含定时辅助信息（针对非同步网络部署情况） ， 其中可包含 UE1的 服务小区 /基站信息， 以便于 D2D接收方 UE通过 UE1的服务小区 /基站的同 步信号作为参考达到与 UE1的同步。
之后 UE1可使用所分配的资源发送 D2D数据， UE2,UE3可通过监听 D2D 通信资源池或资源通知信息获取接收资源并接收 UE1发送的 D2D数据。
实施例六
本实施例描述的是 D2D通信釆用竟争资源方式下的由多个基站服务的 D2D通信方法。需要注意的是，本方明实施例方法不仅适用于 D2D通信过程 中， 还同样适用于 D2D发现过程中。 图 8为本实施例的流程图。 该图 8流程 中步骤如下：
步骤 801.D2D UE获取 D2D通信资源池信息。 D2D UE可通过预配置的 方式获得 D2D通信资源池信息，或通过接收基站或控制节点（无网络覆盖下） 的广播消息获得。 若通过基站或控制节点广播方式获得， 基站或控制节点在 广播之前获得 D2D通信资源池信息配置， 配置方法参见实施例一、 二、 三中 所述方法。
步骤 802.D2D UE有 D2D通信数据要发送，则从获取到的 D2D通信资源 池中选取资源用于发送 D2D数据。可选的， UE选取 D2D数据发送资源之前， 可判断 D2D通信类型并才艮据 D2D通信类型选取相应资源。 其中 D2D通信类 型指该 D2D通信是否为跨小区 /基站的 D2D通信， 例如， 参与该 D2D通信的 UE是否都由同一个小区 /基站服务， 还是由不同的小区 /基站服务。 若 UE判 断 D2D通信类型为小区 /基站内 D2D通信， 则可从小区 /基站内 D2D通信资 源池中为 UE1选取 D2D通信资源； 若 UE判断 D2D通信类型为跨小区 /基站 D2D通信，则可从跨小区 /基站 D2D通信资源池中为 UE1选取 D2D通信资源； 例如， 对于 D2D单播通信， 由于通信的目标 UE已确定， UE可通过获取目 标 UE的服务小区 /基站标识信息的方法来判断 D2D通信类型。 具体的， 可有 以下方法获取目标 UE的服务小区 /基站标识信息： a.通过 D2D发现信号获得， 例如， 通过发现信号中显示携带， 或者通过发现信号时频域资源隐式指示； b.通过基站或 D2D UE发起的寻呼方式获得； c.通过向 D2D服务器查询的方 式获得。
步骤 803.可选的， UE选取 D2D数据发送资源后通过空口广播发送资源 通知信息，该信息中包含定时辅助信息， 其中可包含 UE1的服务小区 /基站信 息， 以便于 D2D接收方 UE通过 UE1的服务小区 /基站的同步信号作为参考 达到与 UEl的同步。 与实施例四和五不同的是， 该实施例中釆用的是竟争资 源的方式， 通常 UE选取竟争资源后并不将选取的通信资源信息告知给基站 或控制节点， 因此， 不需要基站或控制节点间交互或协商资源调度信息并发 送资源通知信息。
步骤 804.UE在选取的 D2D通信资源上发送 D2D数据。
实施例七
本实施例提供了一种设备间发现及通信***， 包括：
控制节点和 D2D用户设备；
所述控制节点， 设置为获取 D2D资源集合信息， 所述 D2D资源集合包 括 D2D发现资源集合和 /或 D2D通信资源集合，根据所述 D2D资源集合信息 确定所述 D2D用户设备的 D2D发现或通信调度资源；
所述 D2D用户设备， 设置为根据所述 D2D资源集合信息确定所述 D2D 用户设备的 D2D发现或通信调度资源，使用所述 D2D通信调度资源进行 D2D 发现或 D2D通信。
优选的， 所述控制节点， 还设置为将所述 D2D资源集合信息发送至其它 控制节点或核心网网元或新增 D2D控制网元。
优选的， 该***还包括其他控制节点和 /或核心网网元和 /或新增 D2D控 制网元；
所述其他控制节点和 /或核心网网元或新增 D2D控制网元， 设置为将推 荐的或者可用或不可用的 D2D资源信息发送给所述控制节点；
所述控制节点，还设置为根据所述推荐的或者可用或不可用的 D2D资源 信息调整后确定自身的 D2D资源集合信息。
优选的， 所述控制节点， 还设置为向相邻控制节点发送所述 D2D资源集 合信息。
优选的， 所述控制节点， 还设置为通过空口广播发送所述 D2D资源集合 信息。 优选的， 所述控制节点， 还设置为将所述 D2D用户设备的 D2D发现或 通信资源调度信息发送给相关的相邻控制节点， 所述相关的相邻控制节点至 少包括以下之一：
所述 D2D用户设备的 D2D发现或通信的目标 D2D用户设备所接入的相 邻控制节点，
所述 D2D用户设备的 D2D发现或通信的 D2D组中 D2D用户设备所接 入的相邻控制节点，
所述控制节点的相邻控制节点。
优选的， 所述相关的相邻控制节点， 设置为判断所述 D2D用户设备的 D2D发现或通信调度资源是否可用， 发送响应消息给所述控制节点。
优选的， 所述控制节点， 还设置为根据所接收的响应消息确定是否更改 所述 D2D用户设备的 D2D发现或通信资源调度信息。
优选的， 所述控制节点， 还设置为在根据所述 D2D资源集合信息确定所 述 D2D用户设备的 D2D通信调度资源后以广播或单播方式通过空口发送所 述 D2D发现或通信调度资源通知信息， 所述 D2D发现或通信调度资源通知 信息包含所述 D2D发现或通信资源调度信息；
所述相关的相邻控制节点或所述 D2D用户设备，还设置为在接收到所述 D2D发现或通信调度资源信息之后， 以广播或单播方式通过空口发送所述 D2D发现或通信调度资源通知信息。
如图 9所示， 控制节点包括资源获取单元和资源分配单元， 其中， 所述资源获取单元设置为： 获取 D2D资源集合信息， 所述 D2D资源集 合包括 D2D发现资源集合和 /或 D2D通信资源集合；
所述资源分配单元设置为： 根据所述 D2D资源集合信息确定所述 D2D 用户设备的 D2D发现或通信调度资源。
较佳地， 该控制节点还包括： 发送单元， 其设置为： 将所述 D2D资源集 合信息发送至其它控制节点或核心网网元或新增 D2D控制网元。 较佳地， 该控制节点还包括： 接收单元， 其设置为： 接收其它控制节点 和 /或核心网网元和 /或新增 D2D控制网元发送的推荐的或者可用或不可用的 D2D资源信息；
所述资源获取单元， 还设置为根据所述推荐的或者可用或不可用的 D2D 资源信息调整后确定自身的 D2D资源集合信息。 较佳地， 该控制节点还包括：
发送单元， 其设置为向相邻控制节点发送所述 D2D资源集合信息。 较佳地， 该控制节点还包括： 发送单元， 其设置为通过空口广播发送所 述 D2D资源集合信息。
较佳地， 该控制节点还包括： 发送单元， 其设置为将所述 D2D用户设备 邻控制节点至少包括以下之一：
所述 D2D用户设备的 D2D发现或通信的目标 D2D用户设备所接入的相 邻控制节点，
所述 D2D用户设备的 D2D发现或通信的 D2D组中 D2D用户设备所接 入的相邻控制节点，
所述控制节点的相邻控制节点。
较佳地， 该控制节点还包括： 接收单元， 其设置为： 接收所述相关的相 邻控制节点在判断所述 D2D用户设备的 D2D发现或通信调度资源是否可用 后， 发送的响应消息。
较佳地， 所述资源获取单元， 还设置为根据所接收的响应消息确定是否 更改所述 D2D用户设备的 D2D发现或通信资源调度信息。
较佳地， 所述发送单元， 还设置为： 在根据所述 D2D资源集合信息确定 所述 D2D用户设备的 D2D通信调度资源后以广播或单播方式通过空口发送 所述 D2D发现或通信调度资源通知信息， 所述 D2D发现或通信调度资源通 知信息包含所述 D2D发现或通信资源调度信息。 本发明实施例还提供一种计算机程序， 包括程序指令， 当该程序指令被 控制节点执行时， 使得该控制节点可执行上述方法。
本发明实施例还提供一种载有上述计算机程序的载体。
本发明的实施例中， 控制节点获取 D2D资源集合信息， 所述 D2D资源 集合包括 D2D发现资源集合和 /或 D2D通信资源集合， 所述控制节点或 D2D 用户设备根据所述 D2D资源集合信息确定所述 D2D用户设备的 D2D发现或 通信调度资源， 所述 D2D用户设备使用所述 D2D通信调度资源进行 D2D发 现或 D2D通信。 实现了能在不同控制节点间协调以及交互 D2D发现或通信 资源信息，解决了进行 D2D发现或通信的多个 D2D UE由不同基站服务的场 景下 UE 间资源交互协商和同步的问题。 本发明的实施例所提供的技术方案 解决了 D2D发现或通信的多个 UE由不同基站（或控制节点）服务情况下的 D2D发现或通信资源交互 /协商以及 D2D UE间同步问题，能在不同控制节点 间协调以及交互 D2D发现或通信资源信息，能有效减少基站间 D2D UE间干 扰， 并达到 D2D UE之间的同步， 使得由多个控制节点服务的 D2D发现或通 信能顺利进行。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计 算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中， 所述计算机程序在相应的硬件平台上（如***、 设备、 装置、 器件等）执行， 在执行时， 包括方法实施例的步骤之一或其组合。
可选地， 上述实施例的全部或部分步骤也可以使用集成电路来实现， 这 些步骤可以被分别制作成一个个集成电路模块， 或者将它们中的多个模块或 步骤制作成单个集成电路模块来实现。 这样， 本发明不限制于任何特定的硬 件和软件结合。
上述实施例中的各装置 /功能模块 /功能单元可以釆用通用的计算装置来 实现， 它们可以集中在单个的计算装置上， 也可以分布在多个计算装置所组 成的网络上。 上述实施例中的各装置 /功能模块 /功能单元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。 上述提到的计算机可读取存储介质可以是只读存储器， 磁盘或光盘等。
任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易想 到变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保护范 围应以权利要求所述的保护范围为准。
工业实用性
本发明实施例所提供的技术方案解决了 D2D发现或通信的多个 UE由不 同基站 (或控制节点）服务情况下的 D2D发现或通信资源交互 /协商以及 D2D UE间同步问题， 能在不同控制节点间协调以及交互 D2D发现或通信资源信 息， 能有效减少基站间 D2D UE间干扰， 并达到 D2D UE之间的同步， 使得 由多个控制节点服务的 D2D发现或通信能顺利进行。

Claims

权 利 要 求 书
1、 一种设备到设备（D2D )发现及通信资源分配方法， 包括： 控制节点获取 D2D资源集合信息， 所述 D2D资源集合包括 D2D发现资 源集合和 /或 D2D通信资源集合；
所述控制节点根据所述 D2D资源集合信息确定 D2D用户设备的 D2D发 现或通信调度资源。
2、 根据权利要求 1所述的方法， 其中， 所述控制节点包括： 基站， 或充 当 D2D控制身份的 D2D用户设备。
3、 根据权利要求 1所述的方法， 其中， 所述控制节点获取 D2D资源集 合信息包括：
所述控制节点从操作管理维护 （OAM ) ***获取 D2D资源集合信息； 或者， 所述控制节点自行配置 D2D资源集合信息；
或者， 所控制节点从核心网网元或新增 D2D控制网元配获取 D2D资源 集合信息。
4、 根据权利要求 3所述的方法， 其中， 所述控制节点自行配置 D2D资 源集合信息包括：
所述控制节点根据相邻控制节点所使用的 D2D 资源信息配置自身的 D2D资源集合信息。
5、 根据权利要求 4所述的方法， 其中， 所述控制节点根据相邻控制节点 所使用的 D2D资源信息配置自身的 D2D资源集合信息包括：
所述控制节点通过 S1或 X2接口或空中接口获得所述相邻控制节点所使 用的 D2D资源信息。
6、 根据权利要求 3所述的方法， 其中， 所述控制节点自行配置 D2D资 源集合信息的步骤之后， 还包括：
所述控制节点将所述 D2D 资源集合信息发送至其它控制节点或核心网 网元或新增 D2D控制网元。
7、 根据权利要求 6所述的方法， 其中， 所述控制节点将所述 D2D资源 集合信息发送至其它控制节点或核心网网元或新增 D2D控制网元的步骤之 后， 还包括：
所述控制节点接收所述其它控制节点或所述核心网网元或新增 D2D控 制网元发送的推荐的或者可用或不可用的 D2D资源信息；
所述控制节点根据所述推荐的或者可用或不可用的 D2D 资源信息调整 后确定自身的 D2D资源集合信息。
8、 根据权利要求 7所述的方法， 其中， 所述 D2D资源集合信息包括用 于 D2D发现或通信的资源集合信息， 所述资源集合信息包括以下至少之一： 由载频和带宽信息标识的资源的列表；
子帧图样，
资源块（RB )信息，
资源的使用限制条件。
9、 根据权利要求 8所述的方法， 其中， 所述资源的使用限制条件包括： 下行蜂窝资源的使用限制条件为只能用于无蜂窝网络覆盖区域； 或者， D2D专用资源可同时适用于有网络覆盖和无网络覆盖区域。
10、 根据权利要求 9所述的方法， 其中， 所述用于 D2D发现或通信的资 源集合信息包括以下至少之一：
进行 D2D发现或通信的用户设备都由所述控制节点服务时可使用的第 一 D2D发现或通信资源集合信息，
进行 D2D发现或通信的用户设备由所述控制节点和相邻控制节点服务 时可使用的第二 D2D发现或通信资源集合信息。
11、 根据权利要求 1所述的方法， 该方法还包括：
所述控制节点向相邻控制节点发送所述 D2D资源集合信息。
12、 根据权利要求 1所述的方法， 其中， 控制节点获取 D2D资源集合信 息的步骤之后还包括：
所述控制节点通过 S1或 X2接口向相邻控制节点发送所述 D2D资源集合 信息；
或者， 所述控制节点向所述核心网网元或新增 D2D控制网元发送所述
D2D资源集合信息。
13、 根据权利要求 12所述的方法， 其中， 所述控制节点向所述核心网网 元或新增 D2D控制网元发送所述 D2D资源集合信息的步骤之后， 还包括： 所述 D2D资源集合信息发生更改后， 将更改后的 D2D资源集合信息发 送至所述相邻控制节点或核心网网元或新增 D2D控制网元。
14、 根据权利要求 1所述的方法， 其中， 该方法还包括：
所述控制节点通过空口广播发送所述 D2D资源集合信息。
15、 根据权利要求 14所述的方法， 其中， 所述控制节点通过空口广播发 送所述 D2D资源集合信息包括：
所述控制节点通过空口广播发送所述相邻控制节点的 D2D 资源集合信 息； 或，
所述控制节点通过空口广播发送无蜂窝网络覆盖下可使用的 D2D 资源 集合信息。
16、 根据权利要求 1所述的方法， 其中， 所述控制节点根据所述 D2D资 源集合信息确定所述 D2D用户设备的 D2D发现或通信调度资源的步骤之前， 还包括：
所述控制节点接收到所述 D2D用户设备的 D2D发现或通信资源请求信 息，所述 D2D发现或通信资源请求信息包含在緩存状态^艮告或调度请求或其 它媒体接入控制 （MAC )控制单元或无线资源控制 （RRC ) 消息中。
17、 根据权利要求 1所述的方法， 其中， 所述控制节点根据所述 D2D资 源集合信息确定所述 D2D用户设备的 D2D发现或通信调度资源的步骤包括： 所述控制节点从所述 D2D 资源集合信息中选取所述 D2D用户设备的 D2D发现或通信调度资源。
18、 根据权利要求 17所述的方法， 其中， 所述控制节点从所述 D2D资 源集合信息中选取所述 D2D用户设备的 D2D发现或通信调度资源包括： 所述控制节点判断是否所述 D2D 用户设备的 D2D发现或通信的所有
D2D用户设备都由所述控制节点服务；
所述控制节点根据判断结果从所述 D2D资源集合信息中选取所述 D2D 用户设备的 D2D发现或通信调度资源。
19、 根据权利要求 18所述的方法， 其中， 所述 D2D资源集合包括第一 D2D资源集合和第二 D2D资源集合，所述控制节点根据判断结果从所述 D2D 资源集合信息中选取所述 D2D用户设备的 D2D发现或通信调度资源包括： 若判断结果为是，则所述控制节点从所述第一 D2D资源集合中选取所述 D2D用户设备的 D2D发现或通信调度资源；
若判断结果为否，则所述控制节点从所述第二 D2D资源集合中选取所述 D2D用户设备的 D2D发现或通信调度资源。
20、 根据权利要求 1所述的方法， 其中， 所述控制节点根据所述 D2D资 源集合信息确定所述 D2D用户设备的 D2D发现或通信调度资源的步骤之后 , 还包括：
所述控制节点将所述 D2D用户设备的 D2D发现或通信资源调度信息发 送给相关的相邻控制节点， 所述相关的相邻控制节点至少包括以下之一： 所述 D2D用户设备的 D2D发现或通信的目标 D2D用户设备所接入的相 邻控制节点，
所述 D2D用户设备的 D2D发现或通信的 D2D组中 D2D用户设备所接 入的相邻控制节点，
所述控制节点的相邻控制节点。
21、 根据权利要求 20所述的方法， 其中， 所述 D2D发现或通信资源调 度信息包括： D2D资源分配信息和 /或 D2D资源配置信息。
22、 根据权利要求 21所述的方法， 其中， 所述 D2D资源配置信息包括 D2D半持续调度配置信息， 所述 D2D半持续调度配置信息包括以下至少之 D2D半持续调度空口网络临时标识， D2D半持续调度建立 /释放指示，半 持续调度周期。
23、 根据权利要求 22所述的方法， 其中， 所述 D2D资源配置信息还包 括：
D2D广播 /组播 /单播通信标识， 或者，
D2D组播通信组标识， 或者，
D2D发现或通信发送方用户设备标识。
24、 根据权利要求 21所述的方法， 其中， 所述 D2D资源分配信息至少 包括以下之一：
D2D时频域资源信息，
传输属性信息，
所述传输属性信息包括调制编码方式 MCS信息。
25、 根据权利要求 21所述的方法， 其中， 所述 D2D发现或通信资源调 度信息中还包含指示所述资源用于数据发送或接收的指示信息。
26、 根据权利要求 21所述的方法， 该方法还包括：
若所述 D2D发现或通信资源调度信息中不包含发送或接收资源指示信 息， 或 D2D发现或通信发送方用户设备标识， 则由接收所述 D2D发现或通 信资源调度信息的 D2D用户设备确定 D2D发送和 /或接收资源。
27、 根据权利要求 20所述的方法， 其中， 所述控制节点将所述 D2D用 后， 还包括： 接收所述相关的相邻控制节点在判断所述 D2D用户设备的 D2D发现或 通信调度资源是否可用后发送的响应消息。
28、 根据权利要求 27所述的方法， 其中，
若所述 D2D发现或通信调度资源可用， 则所述响应消息为确认消息； 和 /或，
若所述 D2D发现或通信调度资源不可用，则所述响应消息为可用的或推 荐的 D2D发现或通信资源调度信息。
29、 根据权利要求 28所述的方法， 其中， 所述相关的相邻控制节点发送 响应消息给所述控制节点的步骤之后， 还包括：
所述控制节点根据所接收的响应消息确定是否更改所述 D2D用户设备 的 D2D发现或通信资源调度信息。
30、 根据权利要求 29所述的方法， 其中， 所述控制节点根据所接收的响 应消息确定是否更改所述 D2D用户设备的 D2D发现或通信资源调度信息包 括：
若响应消息为确认消息，则所述控制节点不需要更改所述 D2D用户设备 的 D2D发现或通信资源调度信息，所述控制节点将所述 D2D用户设备的 D2D 若响应消息不是确认消息，所述控制节点需要更改所述 D2D用户设备的 D2D发现或通信资源调度信息，所述控制节点将更改后的 D2D发现或通信资 源调度信息发送给所述 D2D用户设备和 /或相关的相邻控制节点。
31、 根据权利要求 30所述的方法， 该方法还包括：
所述控制节点根据所述 D2D 资源集合信息确定所述 D2D用户设备的 D2D通信调度资源后，或所述相关的相邻控制节点或所述 D2D用户设备接收 到所述 D2D发现或通信调度资源信息之后，所述控制节点或所述相关的相邻 控制节点或所述 D2D用户设备以广播或单播方式通过空口发送所述 D2D发 现或通信调度资源通知信息，所述 D2D发现或通信调度资源通知信息包含所 述 D2D发现或通信资源调度信息。
32、 根据权利要求 31所述的方法， 其中， 所述 D2D发现或通信调度资 源通知信息包含定时辅助信息， 所述定时辅助信息包括：
时域和 /或频域偏移信息， 或者，
所述 D2D通信发送方用户设备所接入的控制节点标识信息；
所述控制节点标识信息包括： 服务小区标识信息， 或服务基站标识信息， 或控制节点标识信息。
33、 根据权利要求 32所述的方法， 其中， 所述 D2D发现或通信调度资 源通知信息中包含所述资源用于数据发送或接收的指示信息。
34、 一种设备到设备（D2D )发现及通信方法， 包括：
D2D用户设备获取 D2D资源集合信息，所述 D2D资源集合包括 D2D发 现资源集合和 /或 D2D通信资源集合；
所述 D2D用户设备根据所述 D2D资源集合信息确定所述 D2D用户设备 的 D2D发现或通信调度资源；
所述 D2D用户设备使用所述 D2D通信调度资源进行 D2D发现或 D2D 通信。
35、 根据权利要求 34所述的方法， 其中， 所述 D2D设备是从控制节点 的广播消息中获取所述 D2D资源集合信息。
36、 根据权利要求 35所述的方法， 其中， 所述 D2D用户设备根据所述 D2D资源集合信息确定所述 D2D用户设备的 D2D发现或通信调度资源的步 骤包括：
所述 D2D用户设备从所述 D2D资源集合信息中选取所述 D2D用户设备 的 D2D发现或通信调度资源。
37、根据权利要求 36所述的方法，其中，所述 D2D用户设备从所述 D2D 资源集合信息中选取所述 D2D用户设备的 D2D发现或通信调度资源包括： 所述 D2D用户设备判断是否所述 D2D用户设备的 D2D发现或通信的所 有 D2D用户设备都由所述控制节点服务； 所述 D2D用户设备根据判断结果从所述 D2D资源集合信息中选取所述 D2D用户设备的 D2D发现或通信调度资源。
38、 根据权利要求 37所述的方法， 其中， 所述 D2D资源集合包括第一 D2D资源集合和第二 D2D资源集合，所述控制节点根据判断结果从所述 D2D 资源集合信息中选取所述 D2D用户设备的 D2D发现或通信调度资源包括： 若判断结果为是， 则所述 D2D用户设备从所述第一 D2D资源集合中选 取所述 D2D用户设备的 D2D发现或通信调度资源；
若判断结果为否， 则所述 D2D用户设备从所述第二 D2D资源集合中选 取所述 D2D用户设备的 D2D发现或通信调度资源。
39、 如权利要求 34所述的方法， 还包括：
确定 D2D发现或通信调度资源之后， 所述 D2D用户设备通过空口广播 或单播发送资源通知信息。
40、 一种控制节点， 包括资源获取单元和资源分配单元， 其中， 所述资源获取单元设置为： 获取设备到设备（D2D ) 资源集合信息， 所 述 D2D资源集合包括 D2D发现资源集合和 /或 D2D通信资源集合；
所述资源分配单元设置为： 根据所述 D2D资源集合信息确定所述 D2D 用户设备的 D2D发现或通信调度资源。
41、 根据权利要求 40所述的控制节点， 还包括：
发送单元， 其设置为： 将所述 D2D资源集合信息发送至其它控制节点或 核心网网元或新增 D2D控制网元。
42、 根据权利要求 41所述的控制节点， 还包括：
接收单元，其设置为：接收其它控制节点和 /或核心网网元和 /或新增 D2D 控制网元发送的推荐的或者可用或不可用的 D2D资源信息；
所述获取单元，还设置为根据所述推荐的或者可用或不可用的 D2D资源 信息调整后确定自身的 D2D资源集合信息。
43、 根据权利要求 40所述的控制节点， 还包括：
发送单元， 其设置为向相邻控制节点发送所述 D2D资源集合信息。
44、 根据权利要求 40所述的控制节点， 还包括：
发送单元， 其设置为通过空口广播发送所述 D2D资源集合信息。
45、 根据权利要求 40所述的控制节点， 还包括：
发送单元， 其设置为将所述 D2D用户设备的 D2D发现或通信资源调度 信息发送给相关的相邻控制节点， 所述相关的相邻控制节点至少包括以下之 所述 D2D用户设备的 D2D发现或通信的目标 D2D用户设备所接入的相 邻控制节点，
所述 D2D用户设备的 D2D发现或通信的 D2D组中 D2D用户设备所接 入的相邻控制节点，
所述控制节点的相邻控制节点。
46、 根据权利要求 45所述的控制节点， 还包括：
接收单元， 其设置为： 接收所述相关的相邻控制节点在判断所述 D2D用 户设备的 D2D发现或通信调度资源是否可用后， 发送的响应消息。
47、 根据权利要求 46所述的控制节点， 其中，
所述资源获取单元， 还设置为根据所接收的响应消息确定是否更改所述 D2D用户设备的 D2D发现或通信资源调度信息。
48、 根据权利要求 47所述的控制节点， 其中，
所述发送单元，还设置为： 在根据所述 D2D资源集合信息确定所述 D2D 用户设备的 D2D通信调度资源后以广播或单播方式通过空口发送所述 D2D 发现或通信调度资源通知信息，所述 D2D发现或通信调度资源通知信息包含 所述 D2D发现或通信资源调度信息。
49、 一种计算机程序， 包括程序指令， 当该程序指令被控制节点执行时， 使得该控制节点可执行权利要求 1-33任一项所述的方法。
50、 一种载有权利要求 49所述计算机程序的载体。
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