CN103428679A - D2D communication method, device and system - Google Patents
D2D communication method, device and system Download PDFInfo
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- CN103428679A CN103428679A CN2012101496132A CN201210149613A CN103428679A CN 103428679 A CN103428679 A CN 103428679A CN 2012101496132 A CN2012101496132 A CN 2012101496132A CN 201210149613 A CN201210149613 A CN 201210149613A CN 103428679 A CN103428679 A CN 103428679A
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Abstract
The invention provides a D2D communication method, device and system. The D2D communication method comprises the following steps: a base station transmits D2D resource information of a cell where user equipment (UE) is located to the UE, and the UE which needs D2D signal communication transmits and receives D2D signals according to D2D recourses indicated by the D2D resource information of the cell transmitted by a base station. According to the D2D communication method, device and system, the D2D resource information of each cell in a cellular network is controlled by the base station, therefore, the utilization rate of the D2D resource information can be greatly improved, and the interference in the cellular network is eliminated beneficially.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of D2D communication means, equipment and system.
Background technology
Device-to-device communication (Device to Device Communication, D2D), be D2D communication, specifically refer to and do not need infrastructure between terminal and can directly communicate, the existing D2D communication technology, such as Bluetooth technology, wifi-direct etc. are arranged, existing D2D communication mode is to all communities in cellular network by fixing D2D resource information univesral distribution, subscriber equipment in all communities (User Equipment, UE) receives and sends the D2D signal at fixing D2D resource location place.
Realize D2D communication in above-mentioned this mode, although implementation procedure is relatively simple, but give all communities by fixing D2D resource information univesral distribution, because the UE quantity of carrying out the D2D communication requirement in each community is different, while needing to carry out the UE negligible amounts of D2D signal transmission in some communities, will cause a large amount of D2D resource informations to be not used, the utilance of D2D resource information is reduced greatly.In addition, because the D2D resource information of each community in cellular network is limited, this just is unfavorable for disturbing eliminates and the lifting of D2D resource capacity.
Summary of the invention
The embodiment of the present invention provides a kind of D2D communication means, equipment and system, low and be unfavorable for the problem of disturb eliminating in order to solve existing D2D resource information utilance.
Based on the problems referred to above, a kind of D2D communication means that the embodiment of the present invention provides comprises: base station sends to described UE by the D2D resource information of De Zhe community, user equipment (UE) place; The described UE that need to carry out the communication of D2D signal receives and dispatches described D2D signal according to the D2D resource of the D2D resource information indication of described this community of described base station transmission.
A kind of D2D communication means that the embodiment of the present invention provides comprises: the D2D resource information of the neighbor cell of De Zhe community, user equipment (UE) place is determined in base station; Described base station sends to described UE by the D2D resource information of described neighbor cell.
A kind of D2D communication means that the embodiment of the present invention provides, comprise: when the user equipment (UE) that carries out the communication of D2D signal moves into the neighbor cell of De Zhe community, described UE place from De Zhe community, described UE place, described UE sends to described neighbor cell by the identification information that self carries out the communication of D2D signal, or moves by described UE the identification information that described this community at front place described UE is carried out to the communication of D2D signal and send to described neighbor cell.
A kind of D2D communication means that the embodiment of the present invention provides, comprise: user equipment (UE) receives and records D2D resource information when base station presets and send for the network-off direct-passing state, when described UE need to carry out the communication of D2D signal the state in network-off direct-passing, described UE preset and send according to described base station for the network-off direct-passing state time the D2D resource transmitting-receiving D2D signal of D2D resource information indication; Perhaps, when described UE need to carry out the communication of D2D signal the state in network-off direct-passing, described UE chooses D2D resource transmitting-receiving D2D signal according to pre-stored D2D resource selection rule.
A kind of base station equipment that the embodiment of the present invention provides comprises: monitor module, the D2D resource information of carrying out the communication of D2D signal for monitoring each community; Sending module, the described D2D resource information for listening to according to described monitoring module, send to described UE by the D2D resource information of De Zhe community, user equipment (UE) place.
A kind of base station equipment that the embodiment of the present invention provides, comprise: sending module, while for the user equipment (UE) when carrying out the communication of D2D signal, from De Zhe community, described UE place, moving into the neighbor cell of De Zhe community, described UE place, described UE sends to described neighbor cell by the identification information that self carries out the communication of D2D signal.
A kind of subscriber equipment that the embodiment of the present invention provides comprises: receiver module, for receiving the D2D resource information of the De Zhe community, user equipment (UE) place that base station sends; The D2D communication module, while for needs, carrying out the communication of D2D signal, the D2D resource of the D2D resource information indication of described this community received according to described receiver module is received and dispatched described D2D signal.
A kind of subscriber equipment that the embodiment of the present invention provides comprises: determination module moves into the neighbor cell of De Zhe community, described UE place for determining the user equipment (UE) that carries out the communication of D2D signal from De Zhe community, described UE place; The D2D communication module, send to described neighbor cell for the identification information that self is carried out to the communication of D2D signal.
A kind of subscriber equipment that the embodiment of the present invention provides comprises: receiver module, for receiving and record D2D resource information when described base station presets and send for the network-off direct-passing state; The D2D communication module, in the time of need to carrying out the communication of D2D signal the state in network-off direct-passing for described UE, preset and send according to described base station for the network-off direct-passing state time the D2D resource transmitting-receiving D2D signal of D2D resource information indication, or choose D2D resource transmitting-receiving D2D signal according to pre-stored D2D resource selection rule.
The D2D communication system that the embodiment of the present invention provides, comprise above-mentioned base station and subscriber equipment that the embodiment of the present invention provides.
The beneficial effect of the embodiment of the present invention comprises: D2D communication means, equipment and system that the embodiment of the present invention provides, by base station, the D2D resource information of De Zhe community, UE place is sent to UE, when UE need to carry out D2D communication, the D2D resource that sends the D2D resource information indication of De Zhe community according to base station is received and dispatched the D2D signal, thereby realize being controlled by base station the D2D resource information of each community in cellular network, can greatly improve the utilance of D2D resource information, and the interference be conducive in cellular network is eliminated.
The accompanying drawing explanation
The flow chart of the D2D communication means that Fig. 1 provides for the embodiment of the present invention;
The flow chart that the UE that Fig. 2 provides for the embodiment of the present invention and neighbor cell are mutual;
Fig. 3 provides De Zhe community and the mutual flow chart of neighbor cell for the embodiment of the present invention;
The UE that Fig. 4 provides for the embodiment of the present invention is when the network-off direct-passing state and the mutual flow chart of other UE;
The structure chart one of the base station equipment that Fig. 5 provides for the embodiment of the present invention;
The structure chart two of the base station equipment that Fig. 6 provides for the embodiment of the present invention;
The structure chart one of the subscriber equipment that Fig. 7 provides for the embodiment of the present invention;
The structure chart two of the subscriber equipment that Fig. 8 provides for the embodiment of the present invention;
The structure chart three of the subscriber equipment that Fig. 9 provides for the embodiment of the present invention;
The structure chart of the D2D communication system that Figure 10 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with Figure of description, a kind of D2D communication means that the embodiment of the present invention is provided, the embodiment of equipment and system describe.
A kind of D2D communication means that the embodiment of the present invention provides, as shown in Figure 1, the flow chart of the D2D communication means provided for the embodiment of the present invention.Specifically comprise the following steps:
S101: base station sends to UE by the D2D resource information of De Zhe community, user equipment (UE) place;
S102: need to carry out the UE of D2D signal communication, send the D2D resource transmitting-receiving D2D signal of the D2D resource information indication of De Zhe community according to base station.
Preferably, above-mentioned D2D resource information can be D2D resource index value or D2D resource location, the D2D resource can be concrete time-domain resource, frequency domain resource or time-frequency domain resources, for example, the D2D resource location is the running time-frequency resource position, and the running time-frequency resource position can be carried out modulo operation by cell ID and N and determined, i.e. PCI mod N (the resource useful number for D2D communication that N is cell setting).
Preferably, above-mentioned D2D resource information can also comprise the cycle of resource distribution etc.
Further, after above-mentioned steps S101, after can also comprising the steps that S103:UE receives the D2D resource information of transmission De Zhe community, base station, send feedback message to base station.
Preferably, in above-mentioned steps S101, base station can send to UE by the D2D resource information of De Zhe community, UE place by broadcast signaling.
Perhaps, further, before above-mentioned steps S101, also comprise the steps:
The needs that base station reception UE sends carry out the request of D2D signal communication.
In execution step S101 process, base station can send to UE by the D2D resource information of De Zhe community, UE place by dedicated control signaling.
Preferably, above-mentioned dedicated control signaling is radio resource control (Radio Resource Control, RRC) signaling or FDDI sublayer protocol (Media Access Control, MAC) signaling.Certainly, the embodiment of the present application is not limited in above-mentioned two kinds of dedicated control signaling.
Under the situation that UE is moved, the D2D communication means that the embodiment of the present invention provides can have following two kinds of handling processes:
First kind of way:
Except the D2D resource information that sends De Zhe community, UE place, the D2D resource information of the neighbor cell of De Zhe community, UE place is also determined in base station, and sends to UE;
In this way, after UE sends the D2D resource information transmitting-receiving D2D signal of De Zhe community according to base station, when UE moves into neighbor cell, the D2D resource information transmitting-receiving D2D signal of the neighbor cell that can send according to base station.
The second way:
Under this mode, can pass through again as Fig. 2 and two kinds of concrete flow processs realizations of Fig. 3:
Flow process as shown in Figure 2, comprise the steps:
S201: when the UE that is carrying out the communication of D2D signal moves into the neighbor cell of De Zhe community, UE place, UE sends to neighbor cell by the identification information that self carries out the communication of D2D signal.
Preferably, as UE, in the RRC connection status, and while having moved into neighbor cell, UE can send to neighbor cell by dedicated control signaling by the identification information that self carries out the communication of D2D signal.
S202: after neighbor cell receives identification information, to UE, send feedback message.
Flow process as shown in Figure 3, comprise the steps:
S301: when the UE that is carrying out the communication of D2D signal moves into the neighbor cell of De Zhe community, UE place, move by UE the identification information that De Zhe community, front place UE is carried out to the communication of D2D signal and send to neighbor cell.
Preferably,, and while having moved into neighbor cell, move by UE the identification information that UE is carried out to the communication of D2D signal in De Zhe community, front place and send to neighbor cell by X2 or S1 interface in the RRC connection status as UE.
S302: after neighbor cell receives identification information, the ，Xiang Zhe community sends feedback message.
Preferably, aforesaid identification information can be the UE id information that UE itself is carrying out the communication of D2D signal.In embodiments of the present invention, UE sends to neighbor cell by self identification information, be actually the base station that sends to neighbor cell affiliated, move De Zhe community, front place by UE the identification information of UE is sent to neighbor cell, be actually move De Zhe community, front place by UE under base station the identification information of UE is sent to the affiliated base station of neighbor cell, base station under De Zhe community, UE place under base station and its neighbor cell may be same base station, may be also different base stations.
The D2D communication means that the embodiment of the present invention provides, when UE network-off direct-passing occurs (in embodiments of the present invention, network-off direct-passing specifically refers to that UE does not receive the D2D resource information that any base station sends, can't communicate with base station, but the demand of carrying out D2D communication is arranged, at this moment, UE no longer communicates with base station, but directly with between other UE carry out D2D and communicate by letter) situation under, also comprise the steps:
UE receives and records D2D resource information when base station presets and send for the network-off direct-passing state, when UE need to carry out the communication of D2D signal the state in network-off direct-passing, UE preset and send according to base station for the network-off direct-passing state time the D2D resource transmitting-receiving D2D signal of D2D resource information indication; Perhaps
When UE need to carry out the communication of D2D signal the state in network-off direct-passing, UE chooses D2D resource transmitting-receiving D2D signal according to pre-stored D2D resource selection rule.
Above-mentioned UE need to carry out D2D communication, but UE can't choose again community or connect the community failure, or UE directly carries out network-off direct-passing by the indication of NAS layer, these several situations all belong to the situation of network-off direct-passing, in the case, UE preset and send according to base station for the network-off direct-passing state time the D2D resource transmitting-receiving D2D signal of D2D resource information indication, or UE chooses D2D resource transmitting-receiving D2D signal according to pre-stored D2D resource selection rule.
Below take Fig. 4 as example, above-mentioned steps is elaborated, in Fig. 4, UE1 is that two needs carry out the subscriber equipment that D2D communicates by letter with UE2, and idiographic flow is as follows:
Base station sends to UE by predefined D2D resource information during for the network-off direct-passing state, in the embodiment of the present application, take UE1 and UE2 as example;
UE1 and UE2 receive that base station presets and send for the network-off direct-passing state time the D2D resource information after, record the D2D resource information that base station sends;
When UE1 does not receive the D2D resource information of the De Zhe community, UE1 place that base station sends, and need to carry out the D2D signal with UE2 and communicate by letter, it is the now situation in network-off direct-passing of UE1, UE1 preset and send according to base station for the network-off direct-passing state time the D2D resource of D2D resource information indication send the D2D signal, or UE1 chooses the D2D resource according to pre-stored D2D resource selection rule and sends the D2D signal;
UE2 receives the D2D signal that UE1 sends, and sends feedback message to UE1, and UE1 and UE2 set up the D2D communication connection, realizes D2D communication.
Preferably, UE can by broadcast signaling, send in advance according to base station for the network-off direct-passing state time the D2D resource of D2D resource information indication send the D2D signal.
The D2D resource of D2D resource information indication when particularly, UE can the mode by broadcast signaling periodically issues according to base station for the network-off direct-passing state sends the D2D signal; UE chooses D2D resource transmitting-receiving D2D signal according to pre-stored D2D resource selection rule, and for example, pre-stored D2D resource selection rule can be realized by following manner:
In each default available D2D resource index of UE itself storage, choose at random, perhaps select international mobile subscriber identity (International Mobile Sub scriberIdentification Number, IMSI) the corresponding resource transmitting-receiving of the resource index that the mode of modN calculates D2D signal, wherein N is D2D communication system or the good numerical value of protocol configuration.
Based on same inventive concept, the embodiment of the present invention also provides a kind of base station equipment, subscriber equipment and D2D communication system, because the principle that these equipment are dealt with problems with system is similar to aforementioned D2D communication means, therefore the enforcement of this equipment and system can, referring to the enforcement of preceding method, repeat part and repeat no more.
The structure chart one of the base station equipment provided for the embodiment of the present invention as shown in Figure 5.Specifically comprise:
Sending module 502: the D2D resource information for listening to according to monitoring module 501 sends to UE by the D2D resource information of De Zhe community, user equipment (UE) place.
Further, sending module 502, also send to UE for the D2D resource information by broadcast signaling Jiang Zhe community.
Perhaps, further, the base station equipment of the embodiment of the present invention also comprises:
Preferably, above-mentioned dedicated control signaling is RRC signaling or MAC signaling.Certainly, the embodiment of the present application is not limited in above-mentioned two kinds of dedicated control signaling.
The structure chart two of the base station equipment provided for the embodiment of the present invention as shown in Figure 6.Specifically comprise:
Sending module 602, send to UE for the D2D resource information by neighbor cell.
The structure chart one of the subscriber equipment provided for the embodiment of the present invention as shown in Figure 7.Specifically comprise:
The structure chart two of the subscriber equipment provided for the embodiment of the present invention as shown in Figure 8.Specifically comprise:
The structure chart three of the subscriber equipment provided for the embodiment of the present invention as shown in Figure 9.Specifically comprise:
The structure chart of the D2D communication system provided for the embodiment of the present invention as shown in figure 10.Specifically comprise base station 1001 and subscriber equipment 1002 as aforementioned record.
D2D communication means, equipment and system that the embodiment of the present invention provides, by base station, the D2D resource information of De Zhe community, UE place is sent to UE, when UE need to carry out D2D communication, the D2D resource that sends the D2D resource information indication of De Zhe community according to base station is received and dispatched the D2D signal, thereby realize being controlled by base station the D2D resource information of each community in cellular network, can greatly improve the utilance of D2D resource information, and the interference be conducive in cellular network is eliminated.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (17)
1. a D2D communication means, is characterized in that, comprising:
Base station sends to described UE by the D2D resource information of De Zhe community, user equipment (UE) place;
The described UE that need to carry out the communication of D2D signal receives and dispatches described D2D signal according to the D2D resource of the D2D resource information indication of described this community of described base station transmission.
2. the method for claim 1, is characterized in that, before described base station sends to described UE by the D2D resource information of De Zhe community, UE place, also comprises:
Base station receives the request that needs that described UE sends carry out the communication of D2D signal;
Base station sends to described UE by the D2D resource information of De Zhe community, UE place, comprising:
Described base station sends to described UE by dedicated control signaling by the D2D resource information of described this community.
3. the method for claim 1, is characterized in that, also comprises:
Base station sends to described UE by the D2D resource information of the neighbor cell of De Zhe community, user equipment (UE) place;
The D2D resource information of described this community that described UE sends according to described base station also comprises after receiving and dispatching described D2D signal:
When described UE moves into described neighbor cell, the D2D resource information of the described neighbor cell sent according to described base station transmitting-receiving D2D signal.
4. the method for claim 1, is characterized in that, after the D2D resource information transmitting-receiving D2D signal of described this community that described UE sends according to described base station, also comprises:
When described UE moves into the neighbor cell of De Zhe community, UE place, described UE sends to described neighbor cell by the identification information that self carries out D2D communication, or moves by described UE the identification information that described this community at front place described UE is carried out to D2D communication and send to described neighbor cell.
5. the method for claim 1, is characterized in that, also comprises:
UE receives and records D2D resource information when described base station presets and send for the network-off direct-passing state, when described UE need to carry out the communication of D2D signal the state in network-off direct-passing, described UE preset and send according to described base station for the network-off direct-passing state time the D2D resource transmitting-receiving D2D signal of D2D resource information indication; Perhaps
When described UE need to carry out the communication of D2D signal the state in network-off direct-passing, described UE chooses D2D resource transmitting-receiving D2D signal according to predefined D2D resource selection rule.
6. method as claimed in claim 5, is characterized in that, described UE according to described base station, send in advance for the network-off direct-passing state time the D2D resource of D2D resource information indication send the D2D signal, comprising:
The D2D resource of described D2D resource information indication during for the network-off direct-passing state that described UE sends by broadcast signaling in advance according to described base station sends the D2D signal.
7. a D2D communication means, is characterized in that, comprising:
The D2D resource information of the neighbor cell of De Zhe community, user equipment (UE) place is determined in base station;
Described base station sends to described UE by the D2D resource information of described neighbor cell.
8. a D2D communication means, is characterized in that, comprising:
When the user equipment (UE) that carries out the communication of D2D signal moves into the neighbor cell of De Zhe community, described UE place from De Zhe community, described UE place, UE sends to described neighbor cell by the identification information that self carries out the communication of D2D signal, or moves by described UE the identification information that described this community at front place described UE is carried out to the communication of D2D signal and send to described neighbor cell.
9. a D2D communication means, is characterized in that, comprising:
User equipment (UE) receives and records D2D resource information when base station presets and send for the network-off direct-passing state, when described UE need to carry out the communication of D2D signal the state in network-off direct-passing, described UE preset and send according to described base station for the network-off direct-passing state time the D2D resource transmitting-receiving D2D signal of D2D resource information indication; Perhaps
When described UE need to carry out the communication of D2D signal the state in network-off direct-passing, described UE chooses D2D resource transmitting-receiving D2D signal according to pre-stored D2D resource selection rule.
10. a base station equipment, is characterized in that, comprising:
Monitor module, the D2D resource information of carrying out the communication of D2D signal for monitoring each community;
Sending module, the described D2D resource information for listening to according to described monitoring module, send to described UE by the D2D resource information of De Zhe community, user equipment (UE) place.
11. base station equipment as claimed in claim 10, is characterized in that, also comprises: receiver module, carry out the request of D2D signal communication for the needs that receive described UE transmission.
12. a base station equipment, is characterized in that, comprising:
Determination module, for the D2D resource information of the neighbor cell of determining De Zhe community, user equipment (UE) place;
Sending module, send to described UE for the D2D resource information by described neighbor cell.
13. a subscriber equipment, is characterized in that, comprising:
Receiver module, for receiving the D2D resource information of the De Zhe community, user equipment (UE) place that base station sends;
The D2D communication module, while for needs, carrying out the communication of D2D signal, the D2D resource of the D2D resource information indication of described this community received according to described receiver module is received and dispatched described D2D signal.
14. a subscriber equipment, is characterized in that, comprising:
The D2D communication module, while for the user equipment (UE) when carrying out the communication of D2D signal, from De Zhe community, described UE place, moving into the neighbor cell of De Zhe community, described UE place, UE sends to described neighbor cell by the identification information that self carries out the communication of D2D signal.
15. a subscriber equipment, is characterized in that, comprising:
Receiver module, for receiving and record D2D resource information when base station presets and send for the network-off direct-passing state;
The D2D communication module, in the time of need to carrying out the communication of D2D signal the state in network-off direct-passing for user equipment (UE), preset and send according to described base station for the network-off direct-passing state time the D2D resource transmitting-receiving D2D signal of D2D resource information indication, or choose D2D resource transmitting-receiving D2D signal according to pre-stored D2D resource selection rule.
16. subscriber equipment as claimed in claim 15, it is characterized in that, described D2D communication module, send the D2D signal specifically for the D2D resource of the described D2D resource information indication during for the network-off direct-passing state that sends in advance by broadcast signaling according to described base station.
17. a D2D communication system, is characterized in that, comprises as the described base station of claim 10-12 any one, and as the described subscriber equipment of claim 13-16 any one.
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2012
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