CN104349485A - Device to device (D2D) communication and scheduling methods and devices - Google Patents

Device to device (D2D) communication and scheduling methods and devices Download PDF

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Publication number
CN104349485A
CN104349485A CN201310342057.5A CN201310342057A CN104349485A CN 104349485 A CN104349485 A CN 104349485A CN 201310342057 A CN201310342057 A CN 201310342057A CN 104349485 A CN104349485 A CN 104349485A
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China
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dsi
resource
enb
service request
communication
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CN201310342057.5A
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CN104349485B (en
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张惠英
刘佳敏
杨义
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • 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

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses device to device (D2D) communication and scheduling methods and devices, which are used for implementing direct communication between UE (User Equipment) in a D2D region. The D2D communication scheduling method provided by the invention comprises the following steps: a network side node broadcasts information for scheduling D2D resources to the UE, wherein the information comprises resource information for transmitting D2D scheduling information (DSI); the network side node receives a D2D service request of the UE, and performs D2D communication by scheduling the UE through the DSI according to the D2D service request of the UE when allocation of resources for performing D2D communication to the UE is decided.

Description

A kind of communication between devices, dispatching method and device
Technical field
The present invention relates to communication technical field, particularly relate to a kind of equipment room (Device to Device, D2D) communication, dispatching method and device.
Background technology
In mobile communication system future development, in order to better meet user's request, promoting the efficiency of interactive information, introducing the direct communication mechanism between mobile device.But, how direct communication is carried out for subscriber equipment (User Equipment, UE) adjacent to each other, there is no solution at present.
Below existing mobile communication system is described.
See Fig. 1, in Long Term Evolution (Long Term Evolvement, LTE) system, what take is the central controlled mode of network, and namely the up-downgoing data of UE carry out sending and receiving all under the control of a network.Communication between UE and UE, is undertaken forwarding and controlling by network.There is not direct communication link between UE and UE, UE does not allow to send upstream data voluntarily yet.
See Fig. 2, in D2D communication pattern, allow to carry out certain direct communication between UE and UE, these DCLs can be set up in network control or under assisting.The basis of carrying out D2D communication between UE and UE finds close UE.
In general scene, the UE of two mutual communications can close due to each other, by being originally converted into local DCL by the communication link of Internet Transmission, saves a large amount of bandwidth sum network efficiencys.Or, close to each other due to two UE, and create the demand of communication, in this close distance situation, direct link communication between UE, can be utilized to obtain the cheap communication service of stable high speed.
At public safety field, such as public security, fire-fighting, the scenes such as rescue, need to find each other and communication process between special appointment UE.
In above scene, all inevitably relate to and to find mutually between the UE that how to make to specify and to set up the process communicated.
In sum, in prior art, traditional device-to-devices such as similar Wifi and bluetooth communicate, and are all to adopt the mode of UE perfect competition to seize transfer resource, lack unified management and the management and control of network, and resource utilization are not high.And use eNB to carry out controlling and the mode of dispatching D2D and communicating, for the D2D communication between the UE being in different e NB, need to coordinate between eNB resource, for the situation that D2D business is many, what roll up between eNB is mutual, and increases complexity.
Summary of the invention
Embodiments provide a kind of communication between devices, dispatching method and device, in order to realize the direct communication between the UE in D2D region.
The dispatching method that a kind of equipment room D2D that the embodiment of the present invention provides communicates, comprising:
Network side node broadcasts the information for dispatching D2D resource, comprising the resource information for sending D2D schedule information DSI to user equipment (UE);
Network side node receives the D2D service request of UE, according to the D2D service request of UE, when decision divides the resource being used in and carrying out D2D communication for UE, dispatches UE carry out D2D communication by DSI.
Thus at network side, for the direct communication realized between the UE in D2D region achieves concrete scheduling scheme.
Preferably, the D2D for mode of unicast communicates, and network side node receives the D2D service request of UE, according to the D2D service request of UE, when decision divides the resource being used in and carrying out D2D communication for UE, dispatches UE and carries out D2D communication, comprising by DSI:
Network side node receives the D2D service request of a UE and the 2nd UE respectively, D2D service request according to a UE carries out authentication by core net to a UE, and obtain the business transformation parameter of the D2D business of asking, when authentication is passed through, be that a UE distributes D2D mark, send to a UE by D2D response message; D2D service request according to the 2nd UE carries out authentication by core net to the 2nd UE, and obtains the business transformation parameter of the D2D business of asking, and when authentication is passed through, is that the 2nd UE distributes D2D mark, sends to the 2nd UE by D2D response message;
Utilize D2D service request, the business transformation parameter of a described UE and the 2nd UE, be that a UE is used in the resource of carrying out D2D and communicating with dividing of the 2nd UE, generate DSI, and send to a UE and the 2nd UE respectively by the eNB of service separately.
Thus the D2D for mode of unicast communicates, achieve the scheduling of resource of two UE needing communication.
Preferably, network side node carries out the step of authentication to a UE by core net according to the D2D service request of a UE, and the step with carrying out authentication by core net to the 2nd UE according to the D2D service request of the 2nd UE, performs simultaneously.Like this, more save time, raise the efficiency.
Preferably, network side node is that a UE distributes D2D mark, and identifies identical for the 2nd UE distributes D2D.So more save D2D identifying resource.
Preferably, the method also comprises: network side node when to a UE authentication by time, be UE allocate communications direction signs, this is UE allocate communications direction signs and be that a UE distributes D2D and identifies and send to a UE by D2D response message simultaneously;
Network side node when to the 2nd UE authentication by time, be the 2nd UE allocate communications direction signs, this is the 2nd UE allocate communications direction signs and be that the 2nd UE distributes D2D and identifies and send to the 2nd UE by D2D response message simultaneously.
Like this, communication direction can be used to identify reception or the transmission of distinguishing a UE and the 2nd UE when dispatching.
Preferably, the D2D for broadcast mode communicates, and the described information for dispatching D2D resource, also comprises: for sending the resource information of D2D control channel D2DCCH;
When described network side node decision divides the resource being used in and carrying out D2D communication for UE, described network side node also sends D2DCCH to UE.
Thus make receiving terminal UE can carry out business reception selection according to the information of carrying in D2DCCH further, select oneself interested business to receive.
Preferably, network side node receives the D2D service request of UE, according to the D2D service request of UE, when decision divides the resource being used in and carrying out D2D communication for UE, sends DSI and D2DCCH, comprising to UE:
The D2D service request of network side node receiving end/sending end UE, by core net, authentication is carried out to this transmitting terminal UE according to this D2D service request, and obtain the business transformation parameter of the D2D business of asking, when authentication is passed through, for transmitting terminal UE distributes D2D mark, send to transmitting terminal UE by D2D response message;
Utilize described D2D service request, business transformation parameter, for transmitting terminal UE divides the resource being used in and carrying out D2D communication, generate DSI and D2DCCH, and send to transmitting terminal UE and receiving terminal UE by eNB.
Thus the D2D for broadcast mode communicates, achieve the scheduling of resource of the multiple UE needing communication.
Preferably, described network side node be pre-set for communicate to the D2D in D2D region the D2D coordination entity DCE managed or evolved base station eNB.
Preferably, when described network side node is DCE, DCE determines eNB according to the positional information of UE, and broadcasts DSI by the eNB that this is determined to UE.
A kind of equipment room D2D communication means that the embodiment of the present invention provides, comprising:
User equipment (UE) receives the information for dispatching D2D resource of evolved base station eNB broadcast, comprising the resource information for sending D2D schedule information DSI;
UE sends D2D service request to eNB, and receives D2D response message, therefrom obtains D2D mark;
UE, according to the described resource information for sending DSI, determines the resource sending DSI, and from the resource for sending DSI, receives the DSI that eNB sends;
UE, according to the schedule information to this UE in the D2D mark of this UE and the DSI of eNB transmission, carries out D2D communication.
Thus the direct communication achieved between the UE in D2D region.
Preferably, the D2D for mode of unicast communicates, and described UE comprises the UE and the 2nd UE that carry out D2D business data transmission each other.
Thus achieve the direct communication of the mode of unicast between the UE in D2D region.
Preferably, the D2D for broadcast mode communicates, and transmitting terminal UE sends D2D service request to eNB, and receives D2D response message, therefrom obtains D2D mark;
Transmitting terminal UE, according to the schedule information to this transmitting terminal UE in the D2D mark of this UE and the DSI of eNB transmission, sends D2D business datum; The DSI that receiving terminal UE broadcasts according to eNB, selects to receive D2D business datum.
Thus achieve the direct communication of the broadcast mode between the UE in D2D region.
The dispatching device that a kind of equipment room D2D that the embodiment of the present invention provides communicates, comprising:
Scheduling resource notification unit, for the information of user equipment (UE) broadcast for dispatching D2D resource, comprising the resource information for sending D2D schedule information DSI;
Scheduling unit, for receiving the D2D service request of UE, according to the D2D service request of UE, when decision divides the resource being used in and carrying out D2D communication for UE, dispatching UE by DSI and carrying out D2D communication.
Thus at network side, for the direct communication realized between the UE in D2D region achieves concrete scheduling scheme.
Preferably, D2D for mode of unicast communicates, described scheduling unit receives the D2D service request of a UE and the 2nd UE respectively, D2D service request according to a UE carries out authentication by core net to a UE, and obtain the business transformation parameter of the D2D business of asking, when authentication is passed through, be that a UE distributes D2D mark, send to a UE by D2D response message; D2D service request according to the 2nd UE carries out authentication by core net to the 2nd UE, and obtains the business transformation parameter of the D2D business of asking, and when authentication is passed through, is that the 2nd UE distributes D2D mark, sends to the 2nd UE by D2D response message; Utilize D2D service request, the business transformation parameter of a described UE and the 2nd UE, be that a UE is used in the resource of carrying out D2D and communicating with dividing of the 2nd UE, generate DSI, and send to a UE and the 2nd UE respectively by the eNB of service separately.
Thus the D2D for mode of unicast communicates, achieve the scheduling of resource of two UE needing communication.
Preferably, described scheduling unit is while carrying out authentication by core net to a UE according to the D2D service request of a UE, and the D2D service request according to the 2nd UE carries out authentication by core net to the 2nd UE.Like this, more save time, raise the efficiency.
Preferably, described scheduling unit is that a UE distributes D2D mark, and identifies identical for the 2nd UE distributes D2D.So more save D2D identifying resource.
Preferably, described scheduling unit also for: when to a UE authentication by time, be UE allocate communications direction signs, this is UE allocate communications direction signs and be that a UE distributes D2D and identifies and send to a UE by D2D response message simultaneously;
When to the 2nd UE authentication by time, be the 2nd UE allocate communications direction signs, this is the 2nd UE allocate communications direction signs and be that the 2nd UE distributes D2D and identifies and send to the 2nd UE by D2D response message simultaneously.
Like this, communication direction can be used to identify reception or the transmission of distinguishing a UE and the 2nd UE when dispatching.
Preferably, the D2D for broadcast mode communicates, and the described information for dispatching D2D resource, also comprises: for sending the resource information of D2D control channel D2DCCH;
When described scheduling unit decision divides the resource being used in and carrying out D2D communication for UE, described scheduling unit also sends D2DCCH to UE.
Thus make receiving terminal UE can carry out business reception selection according to the information of carrying in D2DCCH further, select oneself interested business to receive.
Preferably, the D2D service request of described scheduling unit receiving end/sending end UE, by core net, authentication is carried out to this transmitting terminal UE according to this D2D service request, and obtain the business transformation parameter of the D2D business of asking, when authentication is passed through, for transmitting terminal UE distributes D2D mark, send to transmitting terminal UE by D2D response message; Utilize described D2D service request, business transformation parameter, for transmitting terminal UE divides the resource being used in and carrying out D2D communication, generate DSI and D2DCCH, and send to transmitting terminal UE and receiving terminal UE by eNB.
Thus the D2D for broadcast mode communicates, achieve the scheduling of resource of the multiple UE needing communication.
Preferably, described device be pre-set for communicate to the D2D in D2D region the D2D coordination entity DCE managed or evolved base station eNB.
Preferably, when described device is DCE, described scheduling unit determines eNB according to the positional information of UE, and broadcasts DSI by the eNB that this is determined to UE.
A kind of equipment room D2D communicator that the embodiment of the present invention provides, comprising:
Scheduling resource receiving element, for receiving the information for dispatching D2D resource of evolved base station eNB broadcast, comprising the resource information for sending D2D schedule information DSI;
Service request unit, for sending D2D service request to eNB, and receives D2D response message, therefrom obtains D2D mark;
DSI receiving element, for according to the described resource information for sending DSI, determines the resource sending DSI, and from the resource for sending DSI, receives the DSI that eNB sends;
Communication unit, for the schedule information to this UE in the D2D mark of UE belonging to this device and the DSI of eNB transmission, carries out D2D communication.
Thus the direct communication achieved between the UE in D2D region.
Preferably, the D2D for mode of unicast communicates, the schedule information to this UE in the DSI that the D2D mark of described communication unit UE belonging to this device and eNB send, and carries out transmission and the reception of D2D business datum between another UE.
Thus achieve the direct communication of the mode of unicast between the UE in D2D region.
Preferably, the D2D for broadcast mode communicates, and when the UE belonging to described device is transmitting terminal UE, described communication unit, according to the schedule information to this transmitting terminal UE in the D2D mark of this UE and the DSI of eNB transmission, sends D2D business datum; When the UE belonging to described device is receiving terminal UE, the DSI that described communication unit is broadcasted according to eNB, selects to receive D2D business datum.
Thus achieve the direct communication of the broadcast mode between the UE in D2D region.
Accompanying drawing explanation
Fig. 1 is existing mobile communication system schematic diagram;
Fig. 2 is existing D2D communication system schematic diagram;
The D2D communication network architecture schematic diagram that a kind of DCE that Fig. 3 provides for the embodiment of the present invention controls;
The broadcast session process schematic that a kind of DCE that Fig. 4 provides for the embodiment of the present invention controls;
The process schematic of unicast session one to one that a kind of DCE that Fig. 5 provides for the embodiment of the present invention controls;
The broadcast session process schematic that a kind of eNB that Fig. 6 provides for the embodiment of the present invention controls;
Fig. 7 controls unicast session process schematic one to one for a kind of eNB that the embodiment of the present invention provides;
The scheduling schematic diagram of a kind of DSI and D2DCCH that Fig. 8 provides for the embodiment of the present invention;
A kind of DSI MAC CE structural representation that Fig. 9 provides for the embodiment of the present invention;
A kind of DSI MAC CE structural representation that Figure 10 provides for the embodiment of the present invention;
The dispatching method schematic flow sheet of the D2D communication of a kind of network side that Figure 11 provides for the embodiment of the present invention;
The schematic flow sheet of the D2D communication of a kind of end side that Figure 12 provides for the embodiment of the present invention;
The structural representation of the dispatching device of the D2D communication of a kind of network side that Figure 13 provides for the embodiment of the present invention;
The structural representation of the D2D communicator of a kind of end side that Figure 14 provides for the embodiment of the present invention.
Embodiment
Embodiments provide a kind of communication between devices, dispatching method and device, in order to realize the direct communication between the UE in D2D region.
The embodiment of the present invention proposes a kind of D2D based on D2D region and communicates and scheduling scheme, all communities under this region provide identical time and frequency resource pond for D2D communicates, and use D2D coordination entity (D2D Coordination Entity, DCE) D2D communication is managed, make mobile device can utilize D2D resource fully flexibly, reduce the interference between D2D communication and cellular communication, improve overall throughput and Consumer's Experience.
The Radio Resource that in the embodiment of the present invention, eNB is used to UE broadcast scheduling and common control information by system information.The UE of D2D communication knows the position of D2D scheduling and controlling information by read system information, then by reading the Radio Resource of D2D scheduling and controlling acquisition of information D2D communication.
The technical scheme that the embodiment of the present invention provides can be applied to D2D region, namely all communities participating in D2D in a certain region (this region is called D2D region) can provide identical Radio Resource for sending D2D scheduling and controlling information, and can pass through D2D coordination entity (D2D Coordination Entity, DCE) in D2D region D2D communication manage.
Further, Nei Ge community, D2D region can be identical for the Radio Resource carrying out D2D communication between UE, also can be different, and based on the negotiation of eNB and DCE, the resource of DCE to the D2D communication that each eNB in D2D region provides manages and distribute.
The central controlled network configuration of DCE as shown in Figure 3, comprises core net (CN, Core Network), D2D coordination entity (DCE, D2D Coordination Entity) and eNode B.
ENB in D2D region uses the information of system information (SIB) broadcast for dispatching D2D resource, comprise for sending D2D schedule information (D2D Scheduling Information, DSI) resource information, the resource information for sending D2D control channel (D2D Control Channel, D2DCCH) can also be comprised further.
Wherein, the resource information for sending DSI comprise DSI transmission frequency, repeat transmission cycle, side-play amount, subframe time slot configuration.Resource information for sending D2D control channel comprises transmission cycle that repeats of D2D control channel, subframe time slot configuration and MCS.
Preferably, the transmission cycle that repeats of D2DCCH configuration is the integral multiple that DSI repeats the transmission cycle.
In D2D region, the SIB information of each eNB broadcast can be identical, also can not be identical, when identical, and can so that the schedule information of D2D resource can be read when UE moves in this D2D region continuously.
Network node DCE is responsible for managing the D2D user in whole D2D region and resource.DCE can consult to be used for the running time-frequency resource that communicates of D2D with eNB, or is configured for the running time-frequency resource of D2D communication to DCE by O & M, and notifies eNB.
ENB except by SIB information send for send DSI resource information and for sending except the resource information of D2DCCH, be also responsible for send DSI and D2DCCH.Wherein, mainly comprise D2D resource scheduling information in DSI, the D2D data of the D2D mark and D2D mark correspondence that specifically comprise scheduling in the DSI cycle under eNB send running time-frequency resource.DSI can also comprise the information whether instruction D2DCCH changes, and is used to indicate and whether have updated D2DCCH, be convenient to UE and upgrade in time.D2DCCH can comprise common subframe and distribute pattern (Common Subframe Allocation Pattern, CSAP) information and D2D session information.CSAP is the sequence that eNB is supplied to the resource pool of D2D communication, and D2D session information comprises the information such as the modulating-coding of D2D mark and corresponding business information and the employing carrying out D2D communication in eNB.
D2D for broadcast mode communicates, and UE obtains the resource information for sending D2D schedule information DSI by the system information (i.e. SIB information) reading eNB broadcast, can also obtain the resource information for sending D2DCCH further.Transmitting terminal UE needs first to access, to DCE(or eNB) send D2D service request, and from DCE(or eNB) obtain D2D mark (be called for short D2D mark) in D2D region.Transmitting terminal UE is to DCE(or eNB) TMSI, the business information of initiation, the information such as UE position and UE ability of UE can be comprised in the D2D service request that sends.Wherein, if UE sends D2D service request to DCE, then eNB determines this D2D business request information to be directly transmitted to DCE according to type of message.UE positional information also can be obtained by network positions.DCE is this UE configuration running time-frequency resource according to UE positional information, the size sending type of service or data and occupation condition, and new DSI and D2DCCH is issued relevant eNB broadcasts.DCE determines to send DSI and D2DCCH at which or which eNB to UE according to the position of transmitting terminal UE.Further, DCE can carry out multiplexing to resource according to the positional information of UE, improves resource utilization.
Transmitting terminal UE monitors DSI and D2DCCH that eNB sends, and obtains the schedule information of oneself, the resource indicated sends D2D data in this schedule information.Receiving terminal UE monitors DSI and D2DCCH that eNB sends, and therefrom finds the resource at the D2D data place oneself be concerned about, then receives the D2D data in this resource.Receiving terminal UE can search the D2D business existed in the enb from the D2DCCH D2D schedule information, and D2D corresponding to this D2D business sends the mark of UE, i.e. D2D mark.
D2D for mode of unicast communicates, and UE is obtained for sending the resource information of DSI and the resource information for sending D2DCCH by read system information.D2D for mode of unicast communicates, and UE only can monitor the resource information for sending DSI, need not monitor the resource information for sending D2DCCH.Originating end UE needs first to access, to DCE(or eNB) send D2D service request, and from DCE(or eNB) obtain D2D mark (be called for short D2D mark) in D2D region.Originating end UE is to DCE(or eNB) TMSI, the mark of called UE, the business information of initiation, the information such as UE position and UE ability of originating end UE can be comprised in the D2D service request that sends.When D2D service request is sent to DCE by needs, eNB determines this D2D business request information to be directly transmitted to DCE according to the type of message of D2D service request.The positional information of UE also can be obtained by network positions.DCE can also do calling UE to core net and to communicate with the D2D of called UE authentication, authentication sends D2D paging by rear DCE to called UE, after receiving the D2D page response of called UE, DCE is that calling UE and called UE distribute D2D mark and communication direction mark, and by D2D response message notice calling UE and called UE, DCE is according to the positional information of calling UE and called UE, the size sending type of service or data, be that this calling UE divides with called UE the resource being used in and carrying out D2D and communicate with occupation condition, and new DSI is issued relevant eNB broadcast.According to the position of this calling UE and called UE, DCE determines that the DSI to this calling UE and called UE send needs to be sent by which or which eNB.Further, DCE can carry out multiplexing to resource according to the positional information of calling UE and called UE, improves resource utilization.Calling UE and called UE monitor DSI and D2DCCH, when listening in DSI the information of the D2D mark comprising oneself, then carry out data input and data output according to the resource location in DSI and D2DCCH and communication direction mark.Wherein, identify about described communication direction, such as, during the communication direction distributed for calling UE identifies, represent transmission with 0, represent reception with 1, and be in the communication direction mark of the distribution of called UE, transmission is represented with 1, representing reception with 0, like this, communication direction can be used when dispatching to identify reception or the transmission of distinguishing calling UE and called UE.
The technical scheme that the embodiment of the present invention provides also can be applied to the D2D communication that eNB controls, and communicates for the D2D across eNB, can by the mutual realization between eNB.For the D2D communication that eNB controls, adjacent eNB also can use identical Radio Resource for sending DSI and D2DCCH by mutual.The detailed process of the D2D communication that eNB controls is roughly the same with the detailed process that the D2D that DCE controls communicates, and difference just DSI and D2DCCH is all that eNB generates.Because eNB can only carry out resource management and scheduling to the UE within the scope of eNB, for the UE carrying out D2D communication across eNB, then need to hold consultation between eNB.
Provide several specific embodiment below in order to concrete implementation to be described.
Following examples illustrate distribution to D2D broadcast communication resource and use procedure with LTE system, and all the other systematic procedures are similar.
The D2D broadcast communication process that embodiment 1:DCE controls
See Fig. 4, the D2D communication means that the embodiment of the present invention provides comprises:
Step 0:eNB, to UE transmitting system information, wherein comprises the resource information for sending DSI and the resource information for sending D2DCCH.
Step 1: if the D2D communication that core net triggers, network sends paging to transmitting terminal UE.If the D2D communication that UE triggers, do not need step 1.
Set up wireless spread-spectrum technology (RRC) between step 2:UE and eNB to connect, setting up reason can for having signal (mo-Signalling).If transmitting terminal UE is in connection status, do not need step 2.
Step 3:UE sends D2D service request to DCE, wherein can carry the TMSI of UE, the D2D business information of initiation, UE positional information (positional information can be report network after UE location survey, also can be network to UE position to measure obtains) etc. content, this message is transmitted to DCE by eNB.
After step 4:DCE receives the request of UE, initiate D2D authentication and the business mapping request of this UE to core net, business maps the parameter that mainly core net provides business to transmit to DCE.
Step 5: after core net receives request, authentication carried out to UE and carry out business mapping, and authentication and business mapping are sent to DCE.
Step 6:DCE receives after authentication passes through, and is that this UE distributes D2D mark, and sends to UE(to be forwarded by eNB by D2D response message it).
The factor such as business information, D2D resource service condition near the position of UE and this position current that step 7:DCE receives to be needed to send according to UE after the request of UE is its distribution D2D resource, generate new DSI and D2DCCH, and determine to be sent by which or which eNB, send DSI and D2DCCH to this or these eNB.
DSI and D2DCCH that step 7a: transmitting terminal UE monitoring eNB sends.
DSI and D2DCCH that step 7b: receiving terminal UE monitoring eNB sends.
Step 8:DCE sends DSI and D2DCCH to eNB.DCE can according to sending the position of UE to DSI and D2DCCH of multiple eNB transmissions to this UE near it.According to the position of UE, identical resource can be reused to different transmitting terminal UE, DCE.
The DSI position that step 9:eNB indicates in SIB sends DSI and D2DCCH.
Step 10: transmitting terminal UE receives in DSI the information of the D2D mark comprising oneself, then carry out data transmission according to the resource location in DSI.
Step 10a: receiving terminal UE receives in DSI resource scheduling information the information comprising the D2D mark oneself be concerned about, then carry out data receiver according to the resource location in schedule information.
Wherein, how UE judges whether to need reception to have various ways, such as receiving terminal UE judges whether to need to receive by the traffic ID read in D2DCCH, or receiving terminal UE receives the data on the Radio Resource of the D2D mark correspondence that all DSI dispatch, what energy decoding was correct thinks within communication range, pay close attention to afterwards, and whether real-time constantly monitoring other business and new business falls within communication range, or UE can obtain certain recommendation information from network side, the D2D mark that such as eNB will belong to identical group (Group) waits information notification to receive UE, pay close attention to, again or, UE can carry out alternately each other by business-level, obtains the information such as D2D mark of the other side.
Step 11: transmitting terminal UE sends D2D data in the resource of scheduling, receiving terminal UE receives D2D data in the resource of scheduling.
It should be noted that, the eNB of UE1 and UE2 service can be identical, also can be different, but need in same D2D region.
The D2D unicast communication process that embodiment 2:DCE controls
See Fig. 5, the D2D communication means that the embodiment of the present invention provides comprises:
Step 50:eNB, to UE transmitting system information, wherein comprises the resource information for sending DSI and the resource information for sending D2DCCH.
Step 51: if the D2D communication that core net triggers, the side UE2 that network communicates to D2D sends paging.If the D2D communication that UE triggers, do not need step 51.
Step 51a: if the D2D communication that core net triggers, the side UE1 that network communicates to D2D sends paging.If the D2D communication that UE triggers, do not need step 51a.
Set up RRC between step 52:UE2 and eNB to connect.If UE2 is in connection status, do not need step 52.
Set up RRC between step 52a:UE1 and eNB to connect.If UE1 is in connection status, do not need step 52a.
Step 53:UE2 sends D2D service request to DCE, wherein can carry the TMSI of UE2, the D2D business information of initiation, UE positional information (positional information can be report network after UE location survey, also can be network to UE position to measure obtains), the content such as the other side UE1 information, this message is transmitted to DCE by eNB.
Step 53a:UE1 sends D2D service request to DCE, wherein can carry the TMSI of UE1, the D2D business information of initiation, UE positional information (positional information can be report network after UE location survey, also can be network to UE position to measure obtains), the content such as the other side UE2 information, this message is transmitted to DCE by eNB.
After step 54:DCE receives the request of UE, initiate D2D authentication and the business mapping request of UE2 and UE1 to core net, business maps the parameter that mainly core net provides business to transmit to DCE.
The authentication of carrying out 2 UE of D2D communication can separately be carried out, and also can merge and carry out.
Step 55: after core net receives request, authentication carried out to UE and carry out business mapping.And authentication and business mapping are sent to DCE.
Step 56:DCE receives after authentication passes through, and sends D2D response to UE2, distributes D2D mark and D2D communication direction identifies, and sends to UE2(to be forwarded by eNB by D2D response message it).
Step 56a:DCE sends D2D response message to UE1, distributes D2D mark and D2D communication direction mark, and sends to UE1(to be forwarded by eNB by D2D response message it).
The D2D mark of distributing for 2 UE carrying out D2D communication may be different, also may be identical.
Step 57:DCE needs the business information sent according to UE, the factors such as the D2D resource service condition near the position of UE and this position current are that it distributes D2D resource, generate new DSI and D2DCCH, and determine to be sent by which or which eNB, send DSI and D2DCCH to this or these eNB.
Step 57a:UE1 and UE2 monitors DSI and D2DCCH that eNB sends.
Step 58:DCE sends DSI and D2DCCH to eNB.DCE can according to sending the position of UE to the resource scheduling information of multiple eNB transmissions to this UE near it.According to the position of UE, identical resource can be reused to different transmission UE, DCE.
The DSI position that step 59:eNB indicates in SIB sends DSI and D2DCCH.
Step 510:UE1 and UE2 receives in DSI schedule information the information of the D2D mark comprising oneself, then carry out data input and data output according to the resource location in schedule information.
The Radio Resource that step 511:UE1 and UE2 specifies at DSI carries out D2D communicate.
It should be noted that, the eNB of UE1 and UE2 service can be identical, also can be different, but need in same D2D region.
The D2D broadcast communication process that embodiment 3:eNB controls
See Fig. 6, the D2D communication means that the embodiment of the present invention provides comprises:
Step 60:eNB, to UE transmitting system information, wherein comprises the resource information for sending DSI and the resource information for sending D2DCCH.
Step 61: if the D2D communication that core net triggers, network sends paging to transmitting terminal UE.If the D2D communication that UE triggers, do not need step 61.
Set up RRC between step 62:UE and eNB to connect, set up reason and can be, but not limited to as mo-Signalling.If send UE to be in connection status, do not need step 62.
Step 63:UE sends D2D service request to eNB, wherein can carry the contents such as the TMSI of UE, the D2D business information of initiation, the positional information (positional information can be report network after UE location survey, also can be that network positions measurement acquisition to UE) of UE.
After step 64:eNB receives the D2D service request of UE, initiate D2D authentication and the business mapping request of this UE to core net, business maps the parameter that mainly core net provides business to transmit to eNB.
Step 65: after core net receives the D2D authentication of this UE and business mapping request, authentication carried out to UE and carry out business mapping.And authentication and business mapping result are sent to eNB.
Step 66:eNB receives after authentication passes through, and is that this UE distributes D2D mark, and it is sent to UE by D2D response message.
The factor such as business information, D2D resource service condition near the position of UE and this position current that step 67:eNB receives to be needed to send according to UE after the D2D service request of the UE of UE is its distribution D2D resource, and determine whether to need other eNB to coordinate the information sending resource and send this transmission UE, generate new DSI and D2DCCH, if need other eNB also to send the information of this UE, then the information of being correlated with sends to corresponding eNB.
DSI and D2DCCH that step 67a: transmitting terminal UE monitoring eNB sends.
DSI and D2DCCH that step 67b: receiving terminal UE monitoring eNB sends.
The DSI position that step 68:eNB indicates in SIB sends DSI and D2DCCH.
Step 69: transmitting terminal UE receives in DSI the information of the D2D mark comprising oneself, then carry out data transmission according to the resource location in DSI.
Step 69a: receiving terminal UE receives in DSI resource scheduling information the information comprising the D2D mark oneself be concerned about, then carry out data receiver according to the resource location in DSI.
Wherein, how UE judges whether to need reception to have various ways, such as receiving terminal UE judges whether to need to receive by the traffic ID read in D2DCCH, or receiving terminal UE receives the data on the Radio Resource of the D2D mark correspondence that all DSI dispatch, what energy decoding was correct thinks within communication range, pay close attention to afterwards, and whether real-time constantly monitoring other business and new business falls within communication range, or UE can obtain certain recommendation information from network side, the D2D mark belonging to identical Group waits information notification to receive UE by such as eNB, pay close attention to, again or, UE can carry out alternately each other by business-level, obtains the information such as D2D mark of the other side.
Step 610: transmitting terminal UE sends D2D data in the resource of scheduling, receiving terminal UE receives D2D data in the resource of scheduling.
The D2D unicast communication process that embodiment 4:eNB controls
See Fig. 7, the D2D communication means that the embodiment of the present invention provides comprises:
Step 70:eNB, to UE transmitting system information, wherein comprises the resource information for sending DSI and the resource information for sending D2DCCH.The service eNB of UE1 is the service eNB of eNB1, UE2 is eNB2.
Step 71: if the D2D communication that core net triggers, the side UE2 that network communicates to D2D sends paging.If the D2D communication that UE2 triggers, do not need step 71.
Step 71a: if the D2D communication that core net triggers, the opposing party UE1 that network communicates to D2D sends paging.If the D2D communication that UE1 triggers, do not need step 71a.
Set up RRC between step 72:UE2 and eNB2 to connect.If UE2 is in connection status, do not need step 72.
Set up RRC between step 72a:UE1 and eNB1 to connect.If UE1 is in connection status, do not need step 72a.
Step 73:UE2 sends D2D service request to eNB2, wherein can carry the TMSI of UE2, the D2D business information of initiation, (positional information can be report network after UE location survey to the positional information of UE2, also can be that network positions measurement acquisition to UE), the contents such as the other side UE1 information.
Step 73a:UE1 sends D2D service request to eNB1, wherein can carry the contents such as the TMSI of UE1, the D2D business information of initiation, the positional information (positional information can be report network after UE location survey, also can be that network positions measurement acquisition to UE) of UE1 and the other side UE2 information.
After step 74:eNB2 receives the D2D service request of UE2, initiate D2D authentication and the business mapping request of UE2 and UE1 to core net, business maps the parameter that mainly core net provides business to transmit to eNB.
After step 74a:eNB1 receives the D2D service request of UE1, initiate D2D authentication and the business mapping request of UE1 and UE2 to core net, business maps the parameter that mainly core net provides business to transmit to eNB.
Step 75: after core net receives D2D service request, authentication carried out to UE1 and UE2 and carry out business mapping.And authentication and business mapping result are sent to eNB2.The mark of the eNB1 simultaneously belonged to by UE1 sends to eNB2.
Step 75a: after core net receives request, authentication carried out to UE1 and UE2 and carry out business mapping.And authentication and business mapping result are sent to eNB1.The mark of the eNB2 simultaneously belonged to by UE2 sends to eNB1.
Step 76:eNB1 and eNB2 consults UE1 and UE2 and carries out D2D and to communicate the Radio Resource used, the D2D mark of distribution, information such as UE transmitting-receiving configuration etc.ENB1 and eNB2 generates respective DSI and D2DCCH according to negotiation result.
The D2D of distribution identifies by step 77:eNB2, receive and send messages etc. by D2D response message notice UE2.
The D2D of distribution identifies by step 77a:eNB1, receive and send messages etc. by D2D response message notice UE1.
Step 78:eNB2 generates scheduling DSI and D2DCCH according to negotiation result.
Step 78a:UE1 and UE2 monitors DSI and D2DCCH that eNB1 and eNB2 sends.
The Radio Resource that step 79:eNB2 sends DSI and D2DCCH(DSI and D2DCCH transmission use notifies UE in SIB).
The Radio Resource that step 79a:eNB1 sends DSI and D2DCCH(DSI and D2DCCH transmission use notifies UE in SIB).
Step 710:UE1 and UE2 receives in DSI schedule information the information of the D2D mark comprising oneself, then carry out data input and data output according to the resource location in schedule information.
Step 711:UE1 and UE2 carry out D2D and communicate on the resource location of the scheduling received.
The scheduling of above DSI and D2DCCH, repeats the transmission cycle see Fig. 8, D2DCCH, is the integral multiple repeating the transmission cycle of DSI, can ensures the continuous reception of UE like this.
DSI in the embodiment of the present invention can pass through to carry in the DSI MAC unit (CE) of medium education (MAC) layer, and DSI MAC CE structure can be distinguished as shown in Figure 9 and Figure 10, wherein.By D2D mark for marking DSI (DSP dispatching cycle in DSI MAC CE, DSI Scheduling Period) in the D2DUE that sends, identify the numbering of starting and ending subframe in dsp provide corresponding D2D to communicate sub-frame information shared in this DSP by providing each D2D.
Send in the DSI subframe that DSI MAC CE indicates at SIB.The UE of the D2D mark be scheduled sends data at the resource location of correspondence.The bit number that in figure, each territory takies is example.Wherein whether change notification (D2DCCH Notification D2DCCH, DN) territory is used to refer to D2DCCH and changes.Transmission direction (Direction, D) territory is used to refer to 2 D2D UE data transfer directions.
Wherein the resource of D2D mark can be actual physical resource, also can be that the D2D common subframe notified in D2DCCH corresponding to pattern (CSAP, Common Subframe Allocation Pattern) information distributes at resource index (index).
To sum up, at network side, see Figure 11, the dispatching method that a kind of equipment room D2D that the embodiment of the present invention provides communicates, comprising:
S101, network side node broadcast the information for dispatching D2D resource, comprising the resource information for sending D2D schedule information DSI to user equipment (UE);
S102, network side node receive the D2D service request of UE, according to the D2D service request of UE, when decision divides the resource being used in and carrying out D2D communication for UE, dispatch UE carry out D2D communication by DSI
Correspondingly, in UE side, see Figure 12, a kind of equipment room D2D communication means that the embodiment of the present invention provides, comprising:
S201, user equipment (UE) receive the information for dispatching D2D resource of evolved base station eNB broadcast, comprising the resource information for sending D2D schedule information DSI;
S202, UE send D2D service request to eNB, and receive D2D response message, therefrom obtain D2D mark;
S203, UE, according to the described resource information for sending DSI, determine the resource sending DSI, and from the resource for sending DSI, receive the DSI that eNB sends;
S204, UE, according to the schedule information to this UE in the D2D mark of this UE and the DSI of eNB transmission, carry out D2D communication.
See Figure 13, at network side, the dispatching device that a kind of equipment room D2D that the embodiment of the present invention provides communicates, comprising:
Scheduling resource notification unit 131, for the information of user equipment (UE) broadcast for dispatching D2D resource, comprising the resource information for sending D2D schedule information DSI;
Scheduling unit 132, for receiving the D2D service request of UE, according to the D2D service request of UE, when decision divides the resource being used in and carrying out D2D communication for UE, dispatching UE by DSI and carrying out D2D communication.
Wherein, described scheduling resource notification unit 131 can be the transmission equipment with transmission-receiving function.
Described scheduling unit 132, can be realized jointly by processor and the transmission equipment with transmission-receiving function.
See Figure 14, in UE side, a kind of equipment room D2D communicator that the embodiment of the present invention provides, comprising:
Scheduling resource receiving element 141, for receiving the information for dispatching D2D resource of evolved base station eNB broadcast, comprising the resource information for sending D2D schedule information DSI;
Service request unit 142, for sending D2D service request to eNB, and receives D2D response message, therefrom obtains D2D mark;
DSI receiving element 143, for according to the described resource information for sending DSI, determines the resource sending DSI, and from the resource for sending DSI, receives the DSI that eNB sends;
Communication unit 144, for the schedule information to this UE in the D2D mark of UE belonging to this device and the DSI of eNB transmission, carries out D2D communication.
Wherein, described scheduling resource receiving element 141, service request unit 142 can be the transmission equipments with transmission-receiving function.
DSI receiving element 143 and communication unit 144 can be realized jointly by processor and the transmission equipment with transmission-receiving function.
In sum, in the technical scheme that the embodiment of the present invention provides, the Radio Resource that eNB is used to UE broadcast scheduling and common control information by system information.The UE of D2D communication knows the position of D2D scheduling and controlling information by read system information, then by reading the Radio Resource of D2D scheduling and controlling acquisition of information D2D communication.
The embodiment of the present invention gives scheduling and the resource allocation methods of a kind of D2D communication, and give the operating process of transmitting terminal and receiving terminal UE, can based on the mode in D2D region, can manage the D2D in region by DCE is unified, also Resource Distribution and Schedule can be carried out based on the mode of consulting between eNB, the D2D realized across eNB communicates, the D2D communication simplifying movement realizes, and D2D resource can be enable completely under network-based control, be conducive to the lifting of overall interference reduction and throughput, the quantity sending data between D2D UE can be taken into account again there is certainty scarcely, improve the flexibility of the utilization of resources.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims (24)

1. a dispatching method for equipment room D2D communication, it is characterized in that, the method comprises:
Network side node broadcasts the information for dispatching D2D resource, comprising the resource information for sending D2D schedule information DSI to user equipment (UE);
Network side node receives the D2D service request of UE, according to the D2D service request of UE, when decision divides the resource being used in and carrying out D2D communication for UE, dispatches UE carry out D2D communication by DSI.
2. method according to claim 1, is characterized in that, the D2D for mode of unicast communicates, network side node receives the D2D service request of UE, according to the D2D service request of UE, when decision divides the resource being used in and carrying out D2D communication for UE, dispatch UE by DSI and carry out D2D communication, comprising:
Network side node receives the D2D service request of a UE and the 2nd UE respectively, D2D service request according to a UE carries out authentication by core net to a UE, and obtain the business transformation parameter of the D2D business of asking, when authentication is passed through, be that a UE distributes D2D mark, send to a UE by D2D response message; D2D service request according to the 2nd UE carries out authentication by core net to the 2nd UE, and obtains the business transformation parameter of the D2D business of asking, and when authentication is passed through, is that the 2nd UE distributes D2D mark, sends to the 2nd UE by D2D response message;
Utilize D2D service request, the business transformation parameter of a described UE and the 2nd UE, be that a UE is used in the resource of carrying out D2D and communicating with dividing of the 2nd UE, generate DSI, and send to a UE and the 2nd UE respectively by the eNB of service separately.
3. method according to claim 2, it is characterized in that, network side node carries out the step of authentication to a UE by core net according to the D2D service request of a UE, the step with carrying out authentication by core net to the 2nd UE according to the D2D service request of the 2nd UE, performs simultaneously.
4. method according to claim 2, is characterized in that, network side node is that a UE distributes D2D mark, and identifies identical for the 2nd UE distributes D2D.
5. method according to claim 2, it is characterized in that, the method also comprises: network side node is when passing through a UE authentication, be UE allocate communications direction signs, this is UE allocate communications direction signs and be that a UE distributes D2D and identifies and send to a UE by D2D response message simultaneously;
Network side node when to the 2nd UE authentication by time, be the 2nd UE allocate communications direction signs, this is the 2nd UE allocate communications direction signs and be that the 2nd UE distributes D2D and identifies and send to the 2nd UE by D2D response message simultaneously.
6. method according to claim 1, is characterized in that, the D2D for broadcast mode communicates, and the described information for dispatching D2D resource, also comprises: for sending the resource information of D2D control channel D2DCCH;
When described network side node decision divides the resource being used in and carrying out D2D communication for UE, described network side node also sends D2DCCH to UE.
7. method according to claim 6, is characterized in that, network side node receives the D2D service request of UE, according to the D2D service request of UE, when decision divides the resource being used in and carrying out D2D communication for UE, sends DSI and D2DCCH, comprising to UE:
The D2D service request of network side node receiving end/sending end UE, by core net, authentication is carried out to this transmitting terminal UE according to this D2D service request, and obtain the business transformation parameter of the D2D business of asking, when authentication is passed through, for transmitting terminal UE distributes D2D mark, send to transmitting terminal UE by D2D response message;
Utilize described D2D service request, business transformation parameter, for transmitting terminal UE divides the resource being used in and carrying out D2D communication, generate DSI and D2DCCH, and send to transmitting terminal UE and receiving terminal UE by eNB.
8. the method according to the arbitrary claim of claim 1-7, is characterized in that, described network side node be pre-set for communicate to the D2D in D2D region the D2D coordination entity DCE managed or evolved base station eNB.
9. method according to claim 8, is characterized in that, when described network side node is DCE, DCE determines eNB according to the positional information of UE, and broadcasts DSI by the eNB that this is determined to UE.
10. an equipment room D2D communication means, is characterized in that, the method comprises:
User equipment (UE) receives the information for dispatching D2D resource of evolved base station eNB broadcast, comprising the resource information for sending D2D schedule information DSI;
UE sends D2D service request to eNB, and receives D2D response message, therefrom obtains D2D mark;
UE, according to the described resource information for sending DSI, determines the resource sending DSI, and from the resource for sending DSI, receives the DSI that eNB sends;
UE, according to the schedule information to this UE in the D2D mark of this UE and the DSI of eNB transmission, carries out D2D communication.
11. methods according to claim 10, is characterized in that, the D2D for mode of unicast communicates, and described UE comprises the UE and the 2nd UE that carry out D2D business data transmission each other.
12. methods according to claim 10, is characterized in that, the D2D for broadcast mode communicates, and transmitting terminal UE sends D2D service request to eNB, and receives D2D response message, therefrom obtain D2D mark;
Transmitting terminal UE, according to the schedule information to this transmitting terminal UE in the D2D mark of this UE and the DSI of eNB transmission, sends D2D business datum; The DSI that receiving terminal UE broadcasts according to eNB, selects to receive D2D business datum.
The dispatching device that 13. 1 kinds of equipment room D2D communicate, it is characterized in that, this device comprises:
Scheduling resource notification unit, for the information of user equipment (UE) broadcast for dispatching D2D resource, comprising the resource information for sending D2D schedule information DSI;
Scheduling unit, for receiving the D2D service request of UE, according to the D2D service request of UE, when decision divides the resource being used in and carrying out D2D communication for UE, dispatching UE by DSI and carrying out D2D communication.
14. devices according to claim 13, it is characterized in that, D2D for mode of unicast communicates, described scheduling unit receives the D2D service request of a UE and the 2nd UE respectively, D2D service request according to a UE carries out authentication by core net to a UE, and obtains the business transformation parameter of the D2D business of asking, when authentication is passed through, be that a UE distributes D2D mark, send to a UE by D2D response message; D2D service request according to the 2nd UE carries out authentication by core net to the 2nd UE, and obtains the business transformation parameter of the D2D business of asking, and when authentication is passed through, is that the 2nd UE distributes D2D mark, sends to the 2nd UE by D2D response message; Utilize D2D service request, the business transformation parameter of a described UE and the 2nd UE, be that a UE is used in the resource of carrying out D2D and communicating with dividing of the 2nd UE, generate DSI, and send to a UE and the 2nd UE respectively by the eNB of service separately.
15. devices according to claim 14, it is characterized in that, described scheduling unit is while carrying out authentication by core net to a UE according to the D2D service request of a UE, and the D2D service request according to the 2nd UE carries out authentication by core net to the 2nd UE.
16. devices according to claim 14, is characterized in that, described scheduling unit is that a UE distributes D2D mark, and identifies identical for the 2nd UE distributes D2D.
17. devices according to claim 14, it is characterized in that, described scheduling unit also for: when passing through a UE authentication, be UE allocate communications direction signs, this is UE allocate communications direction signs and be that a UE distributes D2D and identifies and send to a UE by D2D response message simultaneously;
When to the 2nd UE authentication by time, be the 2nd UE allocate communications direction signs, this is the 2nd UE allocate communications direction signs and be that the 2nd UE distributes D2D and identifies and send to the 2nd UE by D2D response message simultaneously.
18. devices according to claim 13, is characterized in that, the D2D for broadcast mode communicates, and the described information for dispatching D2D resource, also comprises: for sending the resource information of D2D control channel D2DCCH;
When described scheduling unit decision divides the resource being used in and carrying out D2D communication for UE, described scheduling unit also sends D2DCCH to UE.
19. devices according to claim 18, it is characterized in that, the D2D service request of described scheduling unit receiving end/sending end UE, by core net, authentication is carried out to this transmitting terminal UE according to this D2D service request, and obtain the business transformation parameter of the D2D business of asking, when authentication is passed through, be that transmitting terminal UE distributes D2D mark, send to transmitting terminal UE by D2D response message; Utilize described D2D service request, business transformation parameter, for transmitting terminal UE divides the resource being used in and carrying out D2D communication, generate DSI and D2DCCH, and send to transmitting terminal UE and receiving terminal UE by eNB.
20. devices according to the arbitrary claim of claim 13-19, is characterized in that, described device be pre-set for communicate to the D2D in D2D region the D2D coordination entity DCE managed or evolved base station eNB.
21. devices according to claim 20, is characterized in that, when described device is DCE, described scheduling unit determines eNB according to the positional information of UE, and broadcasts DSI by the eNB that this is determined to UE.
22. 1 kinds of equipment room D2D communicators, it is characterized in that, this device comprises:
Scheduling resource receiving element, for receiving the information for dispatching D2D resource of evolved base station eNB broadcast, comprising the resource information for sending D2D schedule information DSI;
Service request unit, for sending D2D service request to eNB, and receives D2D response message, therefrom obtains D2D mark;
DSI receiving element, for according to the described resource information for sending DSI, determines the resource sending DSI, and from the resource for sending DSI, receives the DSI that eNB sends;
Communication unit, for the schedule information to this UE in the D2D mark of UE belonging to this device and the DSI of eNB transmission, carries out D2D communication.
23. devices according to claim 22, it is characterized in that, D2D for mode of unicast communicates, the schedule information to this UE in the DSI that the D2D mark of described communication unit UE belonging to this device and eNB send, and carries out transmission and the reception of D2D business datum between another UE.
24. devices according to claim 22, it is characterized in that, the D2D for broadcast mode communicates, when the UE belonging to described device is transmitting terminal UE, described communication unit, according to the schedule information to this transmitting terminal UE in the D2D mark of this UE and the DSI of eNB transmission, sends D2D business datum; When the UE belonging to described device is receiving terminal UE, the DSI that described communication unit is broadcasted according to eNB, selects to receive D2D business datum.
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Cited By (8)

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CN104661177B (en) * 2015-03-12 2018-05-15 深圳酷派技术有限公司 A kind of method, system and equipment for realizing D2D communications
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WO2016154857A1 (en) * 2015-03-30 2016-10-06 华为技术有限公司 D2d unicast communication method, device and system
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CN110971354A (en) * 2018-09-28 2020-04-07 电信科学技术研究院有限公司 Unicast transmission method, configuration method, terminal and network side equipment
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CN111278165A (en) * 2019-01-11 2020-06-12 维沃移动通信有限公司 Connection establishing method, terminal equipment and network equipment
CN112118542A (en) * 2019-06-21 2020-12-22 ***通信有限公司研究院 Multicast processing method, device and communication equipment
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