CN102647246A - D2D (Dimension To Dimension) pair/D2D cluster communication building method - Google Patents
D2D (Dimension To Dimension) pair/D2D cluster communication building method Download PDFInfo
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Abstract
The invention discloses a D2D (Dimension To Dimension) pair/D2D cluster communication building method which comprises the following steps that: 1) initiator user equipment actively sends a cluster building request signaling code to a base station via a honeycomb link, wherein the content of the cluster building request signaling code comprises a communication mode, user equipment capability and a business label; 2) after the base station receives the cluster building request signaling code, the relevant information of the initiator user equipment is measured and analyzed so as to be combined with a system information selecting and scheduling mechanism to broadcast the cluster building request signaling code; 3) after the initiator user equipment and the adjacent user equipment receive the cluster building request signaling code, analysis is carried out by aiming at a cluster building strategy message; 4) the initiator user equipment sends a channel probing signal; the adjacent user equipment measures the D2D link quality; and the adjacent user equipment, which satisfies the requirement and serves as the candidate cluster use equipment, sends the cluster building confirmation message. According to the D2D pair/D2D cluster communication building method, the traditional cluster communication building flow simplified, resources are saved, and time delay is lowered.
Description
Technical field
The invention belongs to communication technical field, relate to a kind of D2D right/D2D bunch communication establishing method.
Background technology
Along with the broad development of cellular radios such as LTE/LTE-Advanced, D2D (Device-to-device) communication becomes and becomes more and more popular.Mainly contain two kinds of D2D communication modes at present.D2D communicates by letter with D2D bunch to (D2D pair) communication.D2D to communication be meant two subscriber equipmenies (User Equipment, UE) can be each other direct interaction data, need not the communication mode of network side base station (eNodeB) relaying.And D2D bunch of communication is meant in one D2D bunch, and subscriber equipment can be directly and other subscriber equipment interaction datas, need not the communication mode of network side base station relaying.In traditional cellular communication, if a subscriber equipment plan and other subscriber equipment interaction data, then this subscriber equipment at first sends the data to the network side base station, and the clean culture by the base station/broadcast/multi broadcast mode is given other subscriber equipment with data forwarding then.In communication process, if the data that have subscriber equipment can't correct decoding to receive from the base station, then data re-transmission also need be responsible in the base station.Even receiving-transmitting sides subscriber equipment close, and the two is apart from base station far (for example, being in the subscriber equipment of cell edge), and data interaction still needs through the base station relaying.This shows that in some special scenes, traditional cellular communication possibly wasted more Radio Resource, reduce system effectiveness, D2D communication then can reduce resource consumption greatly, improves spectrum efficiency.
As far as D2D bunch of communication, D2D bunch the process of the setting up step that is absolutely necessary.The effective method for building up setup delay that not only can reduce bunch, the operation expense of improving bunch, even the maintenance load that reduces bunch, and have certain versatility.Fig. 1 is the existing method for building up that communication is proposed to D2D, and this method for building up flow process is: at first, first UE sends the D2D initial message that carries second UE sign to the network base station side; Secondly, the resource request of setting up D2D communication is sent to these two UE respectively in the base station; Then, these two UE set up request-reply to base station feedback D2D respectively; Then, the D2D radio bearer is set up completion between these two UE; At last, first UE is responsible for sending D2D to the base station and successfully sets up message.This method for building up is that the D2D of the centralized control in base station provides a very suitable network framework to communication; Do not relate to and set up the particular content of asking and setting up response message; Therefore, from the said method of Fig. 1, can't know foundation by inference and have any information of D2D bunch of further feature.
In addition; It is that one group of UE sets up D2D bunch of method for communicating that Philip (Philips) company has also proposed a kind of; Idiographic flow is as shown in Figure 2: at first, initiator's user equipment (UE) 1 sends to base station eNodeB with the multicast request message, and this request message comprises a plurality of recipient's user equipment (UE)s 2; UE3, the sign of UE4 (ID) information; Secondly, and eNodeB and recipient's subscriber equipment (UE2, UE3, UE4) interactive information, principle of interaction is: if there is not subscriber equipment to support D2D bunch of communication, then flow process finishes (1); (2) if all subscriber equipmenies are all supported D2D bunch of communication, then eNodeB with the identification information of UE1 send to these subscriber equipmenies (UE2, UE3, UE4); (3) if having only certain customers equipment to support D2D bunch of communication, and UE1 learns the identification information of this part subscriber equipment from eNodeB, and UE1 still is ready to continue to set up D2D communication, and UE1 will send the Indication message that continues to set up D2D bunch of communication to eNodeB so; Once more, eNodeB sends to the identification information of UE1 D2D bunch candidate recipient; Then, receive the identification information of UE1 when candidate recipient's subscriber equipment after, if these user equipment agrees UE1 sets up D2D bunch, then these subscriber equipmenies will feed back response message and give eNodeB; At last, eNodeB measures resource and measurement and report resource for the receiving-transmitting sides allocated channel.According to the channel measurement report, if the D2D link-quality of initiator UE1 and recipient's subscriber equipment is suitable, the D2D transfer of data begins so.PHILIPS Co. proposes sets up D2D bunch of method for communicating and need satisfy two assumed conditions, and the one, initiator UE1 must grasp candidate user devices UE2, UE3, the identification information of UE4.And this hypothesis can not guarantee to set up constantly in reality.The 2nd, UE1 makes the decision that whether continues to set up bunch communication through the information that receives the D2D candidate user devices of transmitting from eNodeB.In the reality, candidate user devices possibility enormous amount, the two-way interactive between so this UE1 and eNodeB, eNodeB and the candidate user devices will cause a large amount of setup delays and signaling consumption.
Fig. 3 is based on the process of setting up of a kind of D2D bunch of communication that positional information provides.At first, each subscriber equipment of being ready to carry out D2D communication sends to base station eNodeB with the positional information of oneself; Secondly, eNodeB sets up primary election D2D bunch according to positional information, is divided into transmit leg D2D subscriber equipment and recipient D2D subscriber equipment; Then, eNodeB is with the D2D subscriber equipment and the corresponding frame structure allocate communications resource of this primary election; Then, transmit leg D2D subscriber equipment broadcast channel measuring-signal, the type of service of recipient D2D subscriber equipment feeding back channel state information and expectation acquisition; Transmit leg D2D subscriber equipment is confirmed final D2D bunch according to feedback information, and the D2D that this is final bunch relevant information reports eNodeB; At last, bunch communication is successfully set up, beginning D2D communication.Obviously, the described D2D of foundation method for communicating of Fig. 3 is proceeded in two phases.The first step is according to D2D bunch of positional information primary election; Second step, on the basis of primary election, consider channel condition information and business demand information, confirm final D2D bunch.This D2D bunch method for building up at first is ready to carry out the Radio Resource of the user equipment allocation reporting position information of D2D communication for all; Be the Radio Resource of all possible primary election bunch user equipment allocation measured channel then, all have an opportunity to set up D2D communication to guarantee all possible subscriber equipment.This can bring a lot of unnecessary wastings of resources undoubtedly.
In sum, there is following shortcoming and defect in an existing D2D bunch method for building up: the one, there are bigger signaling consumption and time delay; The 2nd, there is application limitation.Current most of D2D bunch creating a mechanism generally is applicable to certain specific transactions, but can't be applicable to the business that other are dissimilar, and this has increased network complexity to a certain extent.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of D2D right/D2D bunch communication establishing method, this method can be saved resource, reduces time delay.
For solving the problems of the technologies described above, the present invention adopts following technical scheme.
A kind of D2D is right/D2D bunch communication establishing method, may further comprise the steps:
Step 1, initiator's subscriber equipment are initiatively sent to the base station through cellular link and bunch are set up the demand signalling code book, and the said bunch of content of setting up the demand signalling code book comprises communication pattern, UE capability and service label;
Step 2, base station receive said bunch set up the demand signalling code book after, the relevant information of the said initiator's subscriber equipment of Measurement and analysis, and then coupling system Information Selection scheduling mechanism, tactful signaling code book bunch is set up in broadcasting; Setting up tactful signaling code book for said bunch sets up the demand signalling code book and is associated with said bunch;
Step 3, said initiator's subscriber equipment and neighboring user equipment thereof are set up policy message analysis to said bunch after receiving and bunch setting up tactful signaling code book;
As a kind of preferred version of the present invention, in the step 2, base station selected scheduling mechanism is a centralized scheduling mechanism, and the base station is set up tactful signaling code book through cellular link with said bunch and is broadcast to initiator's subscriber equipment and neighboring user equipment thereof; Said bunch of content of setting up tactful signaling code book comprise communication pattern sign, service label, bunch set up confirm recipient, channel detection with resource distribution, bunch set up the detectable signal transmission power control, bunch set up the initiator, reach the local runtime pattern.In the step 4, saidly satisfy the neighboring user equipment of bunch setting up the system requirements that tactful code book proposes and send as candidate's bunch subscriber equipment and bunch set up acknowledge message and give the base station.Said bunch of communication establishing method also comprises: step 5, and the base station is selected a bunch member according to predetermined criterion from candidate's bunch subscriber equipment; Step 6, the base station is broadcast to said bunch of member with bunch member's selection result and data transmission resources grant message.
As another kind of preferred version of the present invention, in the step 2, base station selected scheduling mechanism is a distributed scheduling mechanism, and the base station is set up tactful signaling code book through cellular link with said bunch and is broadcast to initiator's subscriber equipment and neighboring user equipment thereof; Said bunch of content of setting up tactful signaling code book comprise communication pattern sign, service label, bunch set up confirm recipient, channel detection with resource distribution, bunch set up the detectable signal transmission power control, bunch set up the initiator, the local runtime pattern, bunch set up and to confirm resource distribution, maximum admissible equipment number, reach the duration.In the step 4, saidly satisfy the neighboring user equipment of bunch setting up the system requirements that tactful code book proposes and send as candidate's bunch subscriber equipment and bunch set up acknowledge message and give initiator's subscriber equipment.Said bunch of communication establishing method also comprises: step 5 ', initiator's subscriber equipment is selected a bunch member as bunch head from candidate's bunch subscriber equipment; Step 6 ', bunch head passes through cellular link to the resource of base station requests in order to management maintenance bunch operation and transfer of data; Step 7 ', the base station send resource to authorize signaling through cellular link to a bunch hair.
As another preferred version of the present invention; Step 5 ' in; If the link-quality of said candidate bunch subscriber equipment and initiator's subscriber equipment all meets the demands; And there are enough idling-resources the base station, and then the base station is all candidates bunch user equipment allocation dedicated channels, and candidate's bunch subscriber equipment bunch is set up acknowledge message to bunch head feedback through the D2D link on dedicated channel; If the link-quality of said candidate bunch subscriber equipment and initiator's subscriber equipment all meets the demands, but the base station does not have enough idling-resources, then said candidate's bunch subscriber equipment send through a D2D chain road direction bunch hair with the competitive resource mode and bunch sets up acknowledge message; So repeatedly, until bunch head select enough bunch members or overtime till.
As another preferred version of the present invention, the relevant information of said initiator's subscriber equipment comprises the contextual information of initiator's subscriber equipment and implicit information, disturbed condition information, positional information and the subscriber equipment closeness information of bunch setting up the demand signalling code book.
Beneficial effect of the present invention is: and D2D of the present invention is right/and D2D bunch communication establishing method simplified the flow process of setting up of tradition bunch communication, saved resource, reduced time delay.
Description of drawings
Fig. 1 is that existing D2D sets up request and responding process sketch map;
Fig. 2 sets up schematic flow sheet for the D2D multi-casting communication that PHILIPS Co. proposes;
Fig. 3 utilizes positional information to set up D2D bunch schematic flow sheet;
Fig. 4 is the scene sketch map of the multicast transmitted in packets under the base station eNodeB control;
Fig. 5 is the scene sketch map that D2D bunch local information is shared;
Fig. 6 is the described schematic flow sheet of bunch setting up based on centralized scheduling mechanism of embodiment one;
Fig. 7 is the described schematic flow sheet of bunch setting up based on distributed scheduling mechanism of embodiment two.
Embodiment
D2D communication is used for information sharing and transmission has various business and application scenarios, and as shown in Figure 4 is the multicast transmitted in packets under the base station eNodeB control, and D2D shown in Figure 5 bunch local information is shared, and also has other business such as game on line in addition.Yet in which kind of professional perhaps scene, what primarily accomplish all is to set up D2D bunch regardless of D2D bunch of communications applications, otherwise other are not all known where to begin.Therefore, setting up stable D2D bunch fast is the committed step of D2D communication.Existing D2D bunch method for building up only is suitable for the professional or scene of certain certain applications, in case application scenarios changed, D2D bunch set up signaling or related mechanism will lose efficacy.In addition, also there are other shortcomings in present method for building up, such as, D2D communication to set up flow process too complicated, cause serious waste of resources, time delay is excessive, reduces system effectiveness.Therefore, simplify D2D as far as possible and set up process, reducing resource consumption and time delay is very difficult problem.Meanwhile, setting up what be common to various application and business demand bunch also is top-priority.
The present invention is devoted to for a kind of novel signaling code book of D2D design of communication and creates a mechanism; Simplify the process of foundation; Save cell resource; Reduce time delay, proposed for this reason a kind of D2D right/D2D bunch communication establishing method, this method comprises a kind of process of setting up of novel D2D communication and corresponding with it signaling code book.
Table 1 has provided and has set up D2D bunch signaling code book for initiator's user equipment (UE), and this signaling code book comprises the type of service that communication mode, self-ability and the expectation of UE expectation obtain.This signaling code book message of setting up D2D bunch has determined the content of follow-up signaling code book message to set up flow process with communicating by letter to a certain extent.
Table 1: the signaling code book of " bunch foundation request "
Provide from table 1 D2D bunch set up request message and can find out that different business types might cause base station eNodeB to make different communication scheduling decisions with the UE ability.Generally speaking, scheduling mode has two kinds: a kind of is centralized scheduling, and by eNodeB control, another kind is a distributed scheduling, by a bunch head control.Therefore, according to request message and the system information of initiator UE, eNodeB will make different processing schemes, shown in table 2 and table 3.Table 2 is the signaling code book based on " bunch foundation strategy " of centralized scheduling mechanism, and table 3 is the signaling code book based on " bunch foundation strategy " of distributed scheduling mechanism.
Table 2: based on the signaling code book of centralized scheduling machine-processed " bunch foundation strategy "
Table 3: based on the signaling code book of distributed scheduling machine-processed " bunch foundation strategy "
The precondition that realizes the method for the invention is: each UE and eNodeB are synchronous.On this basis, the present invention designed a kind of bunch request of setting up in user equipment side novel signaling code book set and network side bunch set up tactful signaling code book set, these two kinds of signaling code books set are associated with each other.D2D of the present invention is right/and the main implementation procedure of D2D bunch communication establishing method is:
1, initiator's subscriber equipment of D2D bunch of communication sends to the network side base station and bunch sets up the demand signalling code book; The said bunch of communicating requirement of setting up the selection of demand signalling code book according to subscriber equipment, the type of service that the self-ability of subscriber equipment and expectation obtain and deciding;
2, the foundation strategy signaling code book that generates bunch of network side base station, the corresponding different dispatcher of said bunch foundation strategy signaling code book is shaped on different types:
1) corresponding centralized scheduling mechanism, D2D bunch foundation strategy signaling code book comprises communication pattern mark, type of service; Bunch set up to confirm to survey the recipient and use resource block assignments, bunch set up and to survey a transmitting power and control; Bunch set up information such as initiator, local runtime pattern;
2) corresponding distributed scheduling mechanism, D2D bunch foundation strategy signaling code book comprises such as communication pattern mark, type of service; Bunch set up to confirm to survey the recipient and use resource block assignments, bunch set up and to survey a transmitting power and control; Bunch set up the initiator, the local runtime pattern bunch is set up the resource block assignments of confirming; Admissible maximum device number is built information such as bunch duration value.
Do further explain below in conjunction with the accompanying drawing specific embodiments of the invention.
Embodiment one
Present embodiment provide a kind of D2D right/D2D bunch communication establishing method, this method adopts based on the creating a mechanism of D2D bunch of communication of centralized scheduling, as shown in Figure 6, flow process is following:
(1) when D2D communication is set up in initiator's subscriber equipment (UE1) plan; Its initiatively to base station eNodeB send " bunch set up request information; wherein message content comprises communication pattern; (information that does not relate to recipient's subscriber equipment) such as UE self-ability and types of service is example (information type and bit length are with reference to table 1) with table 4, and UE1 is through this message of cellular link transmission;
Table 4: bunch set up demand signalling code book information table based on the eNodeB multicast
| Information type | The length bit |
| The communication pattern sign | 1 |
| The UE ability | 0 |
| Service label | 01 |
(2) after eNodeB receives " bunch foundation request " request message; Coupling system information (for information about) like the idling-resource of system, system's present load etc.; The relevant information of Measurement and analysis UE1, disturbed condition for example, positional information and subscriber equipment closeness etc.If network is suitably for D2D communication and does centralized scheduling, eNodeB choice set Chinese style scheduling mode then, and fill " bunch set up strategy " signaling code book according to table 2; Then, eNodeB gives UE1 and adjacent user equipment (UE) thereof through cellular link with the information broadcast of " bunch foundation strategy " signaling code book.Here be example with table 5, bunch by the eNodeB centralized scheduling, candidate UE gives eNodeB through the RRC signaling with " bunch set up confirm " message feedback;
Table 5: based on the tactful signaling code book information table of bunch setting up of eNodeB multicast
| Information type | Length/bit |
| The communication pattern sign | 0 |
| Service label | 01 |
| Bunch set up to confirm the recipient | 1 |
| The channel detection resource distribution | |
| Bunch set up the measuring-signal transmission power control | 01 |
| Bunch set up the initiator | UE?ID |
| The local runtime pattern | 0 |
(3) after user equipment (UE) 1 and neighboring user equipment UE thereof receive " bunch set up strategy " message, will make analysis respectively to this message.If UE itself can't satisfy system requirements, then do not respond; Otherwise; The UE that satisfies the system requirements bunch setting up tactful code book and propose (can carry out D2D communication, whether be ready and bunch set up initiator's subscriber equipment like neighboring user equipment communicates etc.) prepares to measure the detectable signal that UE1 sends, and is called candidate user devices UE.UE1 then passes through D2D link broadcast probe signal according to system requirements.
(4) if the link-quality between candidate user devices UE and UE1 meets the demands, then candidate user devices UE gives eNodeB through RRC signaling feedback " bunch foundation is confirmed " message.Otherwise this candidate user devices UE does not do any response, withdraws from the process of foundation; At network side, eNodeB (as: is guaranteeing under bunch prerequisite of the normal operation of communication that eNodeB can picked at random bunch member according to predetermined criterion; Perhaps eNodeB chooses a bunch member according to the cellular link quality between candidate user devices and eNodeB) select a bunch member;
(5) eNodeB chooses the result with a bunch member and the data transmission resources grant message is broadcast to D2D bunch.So far, the process of setting up of D2D bunch of communication finishes.
Embodiment two
Present embodiment provide another kind of D2D right/D2D bunch communication establishing method, this method adopts based on the creating a mechanism of D2D bunch of communication of distributed scheduling, and is as shown in Figure 7; Flow process is following: in distributed solution; The step (1) to (3) that flow process is set up in D2D bunch of communication is similar with embodiment one, yet, because bunch communication service/bunch application scenarios difference; So cause scheduling mode different, signaling code book also different thereupon (with reference to table 3).Present embodiment has provided the flow process of setting up based on D2D bunch of distributed scheduling, and is as shown in Figure 7, may further comprise the steps:
(1) initiator's subscriber equipment (UE1) sends " bunch foundation request " signaling through cellular link, and is as shown in table 6, and this signaling information table shows that UE1 attempts to set up local data and shares transmission.
Table 6: bunch set up demand signalling code book information table based on what local file was shared
| Information type | The length bit |
| The communication pattern sign | 1 |
| The UE ability | 1 |
| Service label | 11 |
(2) after base station eNodeB receives " bunch foundation request " signaling, adopt the distributed scheduling mode, fill " bunch foundation is tactful " message according to the information type of table 3 then, as shown in table 7.Afterwards, " bunch foundation strategy " information broadcast after eNodeB will fill through cellular link is to UE1 and candidate user devices (UE2, UE3, UE4).
Table 7: bunch set up tactful signaling code book information table based on what local file was shared
| Information type | Length/bit |
| The communication pattern sign | 1 |
| Service label | 11 |
| Bunch set up to confirm the recipient | 0 |
| Channel detection is used resource distribution | |
| Bunch set up the detectable signal transmission power control | 0 |
| Bunch set up the initiator | UE?ID |
| The local runtime pattern | 1 |
| Bunch set up to confirm resource distribution | |
| Maximum admissible equipment number | 11 |
| Duration | 0 |
(3) UE1 is through D2D link transmitting channel detectable signal, and candidate bunch UE (UE2, UE3, UE4) measures the D2D link-quality;
(4) if the link-quality of candidate bunch UE and UE1 meets the demands; And eNodeB has enough idling-resources; Then eNodeB can be all candidates bunch UE assigned with dedicated channel, and candidate bunch UE feeds back " bunch foundation confirm " message to a bunch UE1 through the D2D link respectively on dedicated channel; If the link-quality of candidate bunch UE and UE1 meets the demands; But eNodeB does not have enough idling-resources; Then candidate bunch UE can (detective/conflict be avoided like carrier wave, CSMA/CA) send " bunch foundation is confirmed " message (all the other undesirable UE do not feed back any message) to a bunch hair, so repeatedly through the competitive resource mode; Until UE1 select enough D2D members (that is to say that the D2D member of UE1 equals " maximum admissible equipment number " value) or overtime till.As shown in Figure 6, this bunch adopts the distributed scheduling mode, and a bunch head is UE1, bunch sets up acknowledge message to feed back to a bunch UE1.
(5) UE1 from the eNodeB request resource, is used for management maintenance bunch operation and transfer of data through cellular link;
(6) eNodeB sends resource through cellular link and authorizes signaling.So far, the process of setting up of D2D bunch of communication finishes.
No matter what deserves to be mentioned is, if D2D bunch of communication is the full communication that connects, so, be centralized scheduling or distributed scheduling, channel measurement in next all need carrying out bunch.
Description of the invention and application are illustrative, are not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of the embodiment that is disclosed and change are possible, and the replacement of embodiment is known with the various parts of equivalence for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present invention or substantive characteristics, and the present invention can be with other forms, structure, layout, ratio, and realize with other elements, material and parts.
Claims (9)
- A D2D right/D2D bunch communication establishing method, it is characterized in that, may further comprise the steps:Step 1, initiator's subscriber equipment are initiatively sent to the base station through cellular link and bunch are set up the demand signalling code book, and the said bunch of content of setting up the demand signalling code book comprises communication pattern, UE capability and service label;Step 2, base station receive said bunch set up the demand signalling code book after, the relevant information of the said initiator's subscriber equipment of Measurement and analysis, and then coupling system Information Selection scheduling mechanism, tactful signaling code book bunch is set up in broadcasting; Setting up tactful signaling code book for said bunch sets up the demand signalling code book and is associated with said bunch;Step 3, said initiator's subscriber equipment and neighboring user equipment thereof are set up policy message analysis to said bunch after receiving and bunch setting up tactful signaling code book;Step 4, initiator's subscriber equipment transmitting channel detectable signal, said neighboring user device measuring D2D link-quality satisfies the neighboring user equipment of bunch setting up the system requirements that tactful code book proposes and sends as candidate's bunch subscriber equipment and bunch set up acknowledge message.
- 2. D2D according to claim 1 is right/D2D bunch communication establishing method; It is characterized in that: in the step 2; Base station selected scheduling mechanism is a centralized scheduling mechanism, and the base station is set up tactful signaling code book through cellular link with said bunch and is broadcast to initiator's subscriber equipment and neighboring user equipment thereof; Said bunch of content of setting up tactful signaling code book comprise communication pattern sign, service label, bunch set up confirm recipient, channel detection with resource distribution, bunch set up the detectable signal transmission power control, bunch set up the initiator, reach the local runtime pattern.
- 3. D2D according to claim 2 is right/D2D bunch communication establishing method; It is characterized in that: in the step 4, saidly satisfy the neighboring user equipment of bunch setting up the system requirements that tactful code book proposes and send as candidate's bunch subscriber equipment and bunch set up acknowledge message and give the base station.
- 4. D2D according to claim 3 is right/D2D bunch communication establishing method, it is characterized in that said bunch of communication establishing method also comprises:Step 5, the base station is selected a bunch member according to predetermined criterion from candidate's bunch subscriber equipment;Step 6, the base station is broadcast to said bunch of member with bunch member's selection result and data transmission resources grant message.
- 5. D2D according to claim 1 is right/D2D bunch communication establishing method; It is characterized in that: in the step 2; Base station selected scheduling mechanism is a distributed scheduling mechanism, and the base station is set up tactful signaling code book through cellular link with said bunch and is broadcast to initiator's subscriber equipment and neighboring user equipment thereof; Said bunch of content of setting up tactful signaling code book comprise communication pattern sign, service label, bunch set up confirm recipient, channel detection with resource distribution, bunch set up the detectable signal transmission power control, bunch set up the initiator, the local runtime pattern, bunch set up and to confirm resource distribution, maximum admissible equipment number, reach the duration.
- 6. D2D according to claim 5 is right/D2D bunch communication establishing method; It is characterized in that: in the step 4, saidly satisfy the neighboring user equipment of bunch setting up the system requirements that tactful code book proposes and send as candidate's bunch subscriber equipment and bunch set up acknowledge message and give initiator's subscriber equipment.
- 7. D2D according to claim 6 is right/D2D bunch communication establishing method, it is characterized in that said bunch of communication establishing method also comprises:Step 5 ', initiator's subscriber equipment is selected a bunch member as bunch head from candidate's bunch subscriber equipment;Step 6 ', bunch head passes through cellular link to the resource of base station requests in order to management maintenance bunch operation and transfer of data;Step 7 ', the base station send resource to authorize signaling through cellular link to a bunch hair.
- 8. D2D according to claim 7 is right/D2D bunch communication establishing method; It is characterized in that: step 5 ' in; If the link-quality of said candidate bunch subscriber equipment and initiator's subscriber equipment all meets the demands; And there are enough idling-resources the base station, and then the base station is all candidates bunch user equipment allocation dedicated channels, and candidate's bunch subscriber equipment bunch is set up acknowledge message to bunch head feedback through the D2D link on dedicated channel;If the link-quality of said candidate bunch subscriber equipment and initiator's subscriber equipment all meets the demands, but the base station does not have enough idling-resources, then said candidate's bunch subscriber equipment send through a D2D chain road direction bunch hair with the competitive resource mode and bunch sets up acknowledge message; So repeatedly, until bunch head select enough bunch members or overtime till.
- 9. D2D according to claim 1 is right/D2D bunch communication establishing method; It is characterized in that: in the step 2, the relevant information of said initiator's subscriber equipment comprises the contextual information of initiator's subscriber equipment and implicit information, disturbed condition information, positional information and the subscriber equipment closeness information of bunch setting up the demand signalling code book.
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