CN104918330A - D2D sending resource pool selection method and D2D sending UE - Google Patents
D2D sending resource pool selection method and D2D sending UE Download PDFInfo
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- CN104918330A CN104918330A CN201410097698.3A CN201410097698A CN104918330A CN 104918330 A CN104918330 A CN 104918330A CN 201410097698 A CN201410097698 A CN 201410097698A CN 104918330 A CN104918330 A CN 104918330A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
Abstract
The invention discloses a D2D sending resource pool selection method and D2D sending UE. The method comprises the following steps: D2D sending UE selects a target signal source according to reference signal intensity and /or the priority of a signal source corresponding to a D2D sending resource pool; and the D2D sending UE selects the D2D sending resource pool corresponding to the target signal source. An embodiment of the invention provides a D2D sending resource pool selection scheme. Selection is carried out according to the reference signal intensity of the signal source and /or the priority of the signal source, so that when the D2D sending UE moves, the appropriate D2D sending resource pool can be selected to carry out D2D Discovery/ Communication message sending.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to system of selection and D2D transmission UE that a kind of D2D sends resource pool.
Background technology
In Long Term Evolution (Long Term Evolution, LTE) system, what communication was taked is the central controlled mode of network, and namely the up-downgoing data of subscriber equipment (User Equipment, 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, and under this mode, the transfer of data of UE and network can be transmitted to network (Device to Network, D2N) referred to as equipment.
Along with the development of the communication technology, propose device-to-device (Device to Device, D2D) close to service.
In third generation partner program (3GPP), D2D comprises following two large classes close to service:
E-UTRA is used to confirm that another one UE in its vicinity close to service discovery (D2D Discovery): UE.Such as, user can utilize D2D UE to use this service to come taxi, the searching friend etc. in its vicinity of finding nearby.
Close to communication for service (D2D Communication): by directly setting up link between two UE close to each other, originally will be converted into local DCL by the communication link of Internet Transmission, thus saving a large amount of bandwidth sum network efficiencys; Or the UE that two close to each other, can utilize direct link communication to obtain the cheap communication service of stable high speed.Generally carry out in network controls or under assisting close to communication for service, evolved base station (eNB) even may for carrying out the dynamic Resources allocation of UE close to communication for service.
For convenience of description, two kinds of Linktypes can be defined:
D2D link: refer to the link directly carrying out between equipment and equipment communicating;
D2N link: carry out the link communicated between equipment and network node.
In addition, the UE participating in D2D Discovery/Communication is divided into two kinds of roles:
D2D sends UE: the UE namely sending D2D Discovery/Communication message;
D2D receives UE: namely receive the UE that D2D sends the D2D Discovery/Communication message that UE sends.
Be directed to D2D Discovery, current 3GPP defines two spike-type cultivars and distributes type:
Class1 (Type1): namely D2D transmission UE sends in resource pool at a D2D Discovery voluntarily and selects a resource to carry out the transmission of D2D Discovery message;
Type 2(Type2): namely D2D sends the transmission that UE carries out D2D Discovery message in the resource of network allocation.It is dynamic or semi-static for sending resource according to the D2D Discovery message of network allocation, and Type2 can be divided into again Type2A and Type2B two spike-type cultivars to distribute type.For Type2A, the resource that network can use for D2D transmission UE dynamic assignment D2D Discovery transmission of messages; For Type2B, network can send the semi-static resource of distributing the use of D2D Discovery transmission of messages of UE for D2D.
For the UE being in D2N free time (IDLE) state, do not set up RRC with base station be connected due to it, therefore when IDLE UE sends UE as D2D, its D2D Discovery resource allocation type can only select Type1.
Be directed to D2D Communication, current 3GPP also defines two spike-type cultivars and distributes type:
Pattern 1(Mode1): namely network scheduling D2D sends the resource that UE carries out D2D transmission use.
Pattern 2(Mode2): namely D2D transmission UE sends in resource pool at D2D Communication voluntarily and selects a resource to carry out the transmission of D2D Communication message.
For the UE being in D2N IDLE state, do not set up RRC with base station be connected due to it, therefore when IDLE UE sends UE as D2D, its D2D Communication resource allocation type can only select Mode2.
For the UE being in RRC connected state, the resource allocation type of its D2D Discovery/Communication is by network control.But for being in UE or the off-grid UE of RRC Idle state, the resource allocation type of its D2D Discovery/Communication then cannot be subject to network control, for D2D Discovery scene, the resource allocation type that D2D sends UE can only select Type1; For D2D Communication scene, the resource allocation type that D2D sends UE can only select Mode2.For these UE, the D2D that its D2D that simultaneously may receive Serving cell sends resource pool and adjacent cell sends resource pool, even also can receive the D2D transmission resource pool that relaying (relay) UE forwards.In this case, need to consider that D2D sends UE and how to carry out the selection of D2D transmission resource pool.
Wherein, for D2D Discovery scene, D2D sends resource pool and refers to that D2D Discovery sends resource pool; For D2D Communication scene, D2D sends resource pool and refers to that D2D Communication sends resource pool.
Summary of the invention
The object of this invention is to provide system of selection and D2D transmission UE that a kind of D2D sends resource pool, how to send from multiple D2D the problem carrying out resource pool selecting to solve.
The object of the invention is to be achieved through the following technical solutions:
D2D sends a system of selection for resource pool, comprising:
D2D sends UE and sends the reference signal strength of information source corresponding to resource pool and/or the priority of information source according to D2D, select target information source;
The D2D that this D2D sends UE select target information source corresponding sends resource pool.
Embodiments provide the selection scheme that D2D sends resource pool.Select according to the reference signal strength of information source and/or the priority etc. of information source, ensure that D2D sends UE when mobile, suitable D2D transmission resource pool can be selected to carry out the transmission of D2D Discovery/Communication message.
In the embodiment of the present invention, D2D send resource pool information source can but be not limited only to be that D2D sends the persistent district of UE, adjacent cell, relaying.
Wherein, relaying can but be not limited only to be the via node in cellular network, also can be relaying UE.
The priority of information source can be pre-configured, also can be that the persistent district of D2D transmission UE sends to D2D to send UE by modes such as broadcast.
In the embodiment of the present invention, several preferably prioritization situation is as follows:
Persistent district > adjacent cell > relaying, or,
Persistent district=adjacent cell > relaying, or,
Persistent district=adjacent cell=relaying
Wherein, for the priority relationship of persistent district and adjacent cell, persistent district > adjacent cell, refers to that the priority of persistent district is greater than the priority of adjacent cell, persistent district=adjacent cell, refers to that the priority of persistent district is identical with the priority of adjacent cell.
The reference signal of information source can be certain signal specific, and this signal specific can embody the channel quality of information source, cell reference signals (CRS) of such as D2N network etc.
Below for the information source that can detect for persistent district and adjacent cell, the preferred implementation of select target information source is illustrated.
The mode one of select target information source:
D2D sends the reference signal strength first predetermined condition that UE judges whether adjacent cell;
If there is the reference signal strength first predetermined condition of adjacent cell, D2D sends UE and selects this adjacent cell as target information source;
If do not have the reference signal strength first predetermined condition of adjacent cell, D2D sends UE and selects persistent district as target information source.
Wherein, first predetermined condition refers to: reference signal strength is greater than the reference signal strength of persistent district, and the duration that difference is greater than the second threshold value is greater than very first time threshold value.
Wherein, the value of very first time threshold value is determined according to practical application request, and under extreme case, the value of very first time threshold value can be 0.
Wherein, the value of the second threshold value is determined according to practical application request.Preferably, the second threshold value is signal strength signal intensity deviant corresponding to D2D resource selection.
Wherein, if there is the reference signal strength first predetermined condition of multiple adjacent cell, the adjacent cell that can therefrom select reference signal strength maximum is as target information source, also can therefrom Stochastic choice adjacent cell as target information source, an adjacent cell therefrom can also be selected as target information source according to other rules.
The mode two of select target information source:
D2D sends UE and judges whether the reference signal strength of persistent district is greater than the first threshold value;
If the reference signal strength of persistent district is greater than the first threshold value, D2D sends UE and selects persistent district as target information source;
The first threshold value that if the reference signal strength of persistent district is not more than (being namely less than or equal to), D2D sends a UE select target information source in the manner described above.
Wherein, the value of the first threshold value is determined according to practical application request.
The mode three of select target information source:
D2D sends UE sends information source corresponding to resource pool priority according to D2D, selects information source that priority is the highest as target information source.
Wherein, if there is the information source of multiple limit priority, then can Stochastic choice information source that priority is the highest as target information source, also can therefrom select information source that reference signal strength is the highest as target information source.
The mode four of select target information source:
D2D sends UE and judges whether the priority of persistent district is greater than the priority of adjacent cell;
If the priority of persistent district is greater than the priority of adjacent cell, D2D sends the adjacent cell that UE judges whether reference signal strength second predetermined condition, if had, then select the adjacent cell of reference signal strength second predetermined condition as target information source, otherwise, select persistent district as target information source;
If the priority of persistent district is not more than the priority of adjacent cell, D2D sends UE and judges whether that reference signal strength meets the adjacent cell of the 3rd predetermined condition, if had, reference signal strength is then selected to meet the adjacent cell of the 3rd predetermined condition as target information source, otherwise, select persistent district as target information source.
Wherein, second predetermined condition refers to, reference signal strength is greater than the reference signal strength of persistent district, and difference is greater than the duration of the 3rd threshold value more than the second time threshold.
Wherein, meet the 3rd predetermined condition and refer to, reference signal strength is greater than the reference signal strength of persistent district, and difference is greater than the duration of the 4th threshold value more than the 3rd time threshold.
Wherein, the value of the second time threshold and the 3rd time threshold is determined according to practical application request, and under extreme case, the value of the second time threshold can go 0, and the value of the 3rd time threshold also can get 0.
Wherein, the value of the 3rd threshold value and the 4th threshold value is determined according to practical application request.
Preferably, in practical application, the 3rd threshold value can be set and be greater than the 4th threshold value.
Wherein, priority for persistent district is greater than the situation of the priority of adjacent cell, if there is the reference signal strength second predetermined condition of multiple adjacent cell, the adjacent cell that can therefrom select reference signal strength maximum is as target information source, also can therefrom Stochastic choice adjacent cell as target information source, an adjacent cell therefrom can also be selected as target information source according to other rules.
Wherein, priority for persistent district is not more than the situation of the priority of adjacent cell, if there is the reference signal strength of multiple adjacent cell to meet the 3rd predetermined condition, the adjacent cell that can therefrom select reference signal strength maximum is as target information source, also can therefrom Stochastic choice adjacent cell as target information source, an adjacent cell therefrom can also be selected as target information source according to other rules.
The mode five of select target information source:
D2D sends UE and judges whether the reference signal strength of persistent district is greater than the first threshold value;
If the reference signal strength of persistent district is greater than the first threshold value, D2D sends UE and selects persistent district as target information source;
If the reference signal strength of persistent district is not more than the first threshold value, D2D sends UE four select target information sources in the manner described above.
If the information source that can detect is persistent district and relaying, the implementation of select target information source with reference to the selection mode of each target information source above-mentioned, can repeat no more here.
If the information source that can detect is persistent district, adjacent cell and relaying, and adjacent cell is identical with the priority of relaying, the implementation of select target information source with reference to the selection mode of each target information source above-mentioned, can repeat no more here.
If the information source that can detect is persistent district, adjacent cell and relaying, and the priority of adjacent cell is greater than the priority of relaying.Can with reference to aforesaid way one ~ tri-during select target information source.Also can with reference to aforesaid way four during select target information source, but when the priority of persistent district is greater than the priority of adjacent cell, if do not have adjacent cell to meet above-mentioned condition, then judge whether that the reference signal strength of relaying is greater than the relaying of duration more than the 4th time threshold of the 5th threshold value compared with the reference signal strength of persistent district, if had, select this relaying as target information source, otherwise, select persistent district as target information source; When the priority of persistent district is not more than the priority of adjacent cell, if do not have adjacent cell to meet above-mentioned condition, then judge whether that the reference signal strength of relaying is greater than the relaying of duration more than the 5th time threshold of the 6th threshold value compared with the reference signal strength of persistent district, if had, select this relaying as target information source, otherwise, select persistent district as target information source.Also can with reference to aforesaid way five during select target information source.
If the information source that can detect is persistent district, adjacent cell and relaying, and the priority of relaying is greater than the priority of adjacent cell.Can with reference to aforesaid way one ~ tri-during select target information source.Also first can judge during select target information source whether the priority of persistent district is greater than the priority of relaying, when the priority of persistent district is greater than the priority of relaying, judge whether relaying and adjacent cell meet predetermined condition successively, if there is relaying to meet predetermined condition, prioritizing selection relaying is as target information source, only have when relaying and adjacent cell all do not meet predetermined condition, just select persistent district as target information source; When the priority of persistent district is not more than the priority of relaying, judge whether relaying and adjacent cell meet predetermined condition successively, if there is relaying to meet predetermined condition, prioritizing selection relaying is as target information source, only have when relaying and adjacent cell all do not meet predetermined condition, just select persistent district as target information source.Before judging whether the priority of persistent district is greater than the priority of relaying, also first can judge whether the reference signal strength of persistent district is greater than the first threshold value, if be greater than the first threshold value, select persistent district as target information source, otherwise judge whether the priority of persistent district is greater than the priority of relaying, and according to said process select target information source.
Based on the inventive concept same with method, the embodiment of the present invention also provides a kind of D2D to send UE, comprising:
Target information source selects module, for sending the reference signal strength of information source corresponding to resource pool and/or the priority of information source according to D2D, select target information source;
Resource pool selects module, and the D2D corresponding for select target information source sends resource pool.
Embodiments provide the selection scheme that D2D sends resource pool.Select according to the reference signal strength of information source and/or the priority etc. of information source, ensure that D2D sends UE when mobile, suitable D2D transmission resource pool can be selected to carry out the transmission of D2D Discovery/Communication message.
Preferably, target information source selects module to be used for:
Judge whether the reference signal strength first predetermined condition of adjacent cell or relaying, first predetermined condition refers to: reference signal strength is greater than the reference signal strength of persistent district, and the duration that difference is greater than the second threshold value exceedes very first time threshold value;
If there is the reference signal strength first predetermined condition of adjacent cell or relaying, select described adjacent cell or relaying as target information source;
If there is no the reference signal strength first predetermined condition of adjacent cell or relaying, select persistent district as target information source.
Preferably, described second threshold value is signal strength signal intensity deviant corresponding to D2D resource selection.
Preferably, when judging whether the reference signal strength first predetermined condition of adjacent cell or relaying, described target information source selects module to be used for:
Judge whether the reference signal strength of persistent district is greater than the first threshold value;
If the reference signal strength of persistent district is greater than the first threshold value, select described persistent district as target information source;
If the reference signal strength of persistent district is less than or equal to the first threshold value, judge whether the reference signal strength first predetermined condition of adjacent cell or relaying.
Preferably, described target information source selects module to be used for:
Send the priority of information source corresponding to resource pool according to D2D, select information source that priority is the highest as target information source.
Preferably, described information source comprises: persistent district, adjacent cell and relaying.
Preferably, the priority of information source is pre-configured or persistent district broadcast.
Preferably: the priority of persistent district is greater than the priority of adjacent cell, the priority of adjacent cell is greater than the priority of relaying; Or the priority of persistent district equals the priority of adjacent cell, is greater than the priority of relaying; Or persistent district, adjacent cell are identical with the priority of relaying.
Preferably, described target information source selects module to be used for:
Judge whether the priority of persistent district is greater than the priority of adjacent cell and relaying;
If the priority of persistent district is greater than the priority of adjacent cell and relaying, judge whether adjacent cell or the relaying of reference signal strength second predetermined condition, if had, then select the adjacent cell of reference signal strength second predetermined condition or relaying as target information source, otherwise, select persistent district as target information source; Second predetermined condition refers to, reference signal strength is greater than the reference signal strength of persistent district, and difference is greater than the duration of the 3rd threshold value more than the second time threshold.
If the priority of persistent district is less than or equal to the priority of adjacent cell or relaying, judge whether that reference signal strength meets the 3rd pre-conditioned adjacent cell or relaying, if had, reference signal strength is then selected to meet the 3rd pre-conditioned adjacent cell or relaying as target information source, otherwise, select persistent district as target information source.Meet the 3rd pre-conditionedly to refer to, reference signal strength is greater than the reference signal strength of persistent district, and difference is greater than the duration of the 4th threshold value more than the 3rd time threshold.
Preferably, described 3rd threshold value is greater than described 4th threshold value.
Preferably, when judging whether the priority of persistent district is greater than the priority of adjacent cell and relaying, described target information source selects module to be used for:
Judge whether the reference signal strength of persistent district is greater than the first threshold value;
If the reference signal strength of persistent district is greater than the first threshold value, select persistent district as target information source;
If the reference signal strength of persistent district is less than or equal to the first threshold value, judge whether the priority of persistent district is greater than the priority of adjacent cell and relaying.
Preferably, the reference signal of information source comprises: cell reference signals.
Based on the inventive concept same with method, the embodiment of the present invention also provides a kind of D2D to send UE, comprises processor and memory.
Processor is configured to perform the computer program with following function: send the reference signal strength of information source corresponding to resource pool and/or the priority of information source according to D2D, select target information source; The D2D transmission resource pool that select target information source is corresponding;
Memory is configured to the code storing above computer program.
Embodiments provide the selection scheme that D2D sends resource pool.Select according to the reference signal strength of information source and/or the priority etc. of information source, ensure that D2D sends UE when mobile, suitable D2D transmission resource pool can be selected to carry out the transmission of D2D Discovery/Communication message.
Accompanying drawing explanation
The method flow diagram that Fig. 1 provides for the embodiment of the present invention;
A kind of D2D that Fig. 2 provides for the embodiment of the present invention sends UE schematic diagram;
The another kind of D2D that Fig. 3 provides for the embodiment of the present invention sends UE schematic diagram.
Embodiment
The core concept of the embodiment of the present invention is: under D2D Discovery scene or under D2D Communication scene, and D2D transmission UE sends the reference signal strength of information source corresponding to resource pools according to multiple D2D that it can detect and/or the priority of information source determines that the D2D using which information source to send sends resource pool.
Below in conjunction with accompanying drawing, the technical scheme that the embodiment of the present invention provides is described in detail.
A kind of D2D that the embodiment of the present invention provides sends the system of selection of resource pool as shown in Figure 1, specifically comprises following operation:
Step 100, D2D send UE and send the reference signal strength of information source corresponding to resource pool and/or the priority of information source according to D2D, select target information source.
The D2D that step 110, this D2D send UE select target information source corresponding sends resource pool.
Embodiments provide the selection scheme that D2D sends resource pool.Select according to the reference signal strength of information source and/or the priority etc. of information source, ensure that D2D sends UE when mobile, suitable D2D transmission resource pool can be selected to carry out the transmission of D2D Discovery/Communication message.
In the embodiment of the present invention, D2D send resource pool information source can but be not limited only to be that D2D sends the persistent district of UE, adjacent cell, relaying.
Wherein, relaying can but be not limited only to be the via node in cellular network, also can be relaying UE.
The priority of information source can be pre-configured, also can be that the persistent district of D2D transmission UE sends to D2D to send UE by modes such as broadcast.
In the embodiment of the present invention, several preferably prioritization situation is as follows:
Persistent district > adjacent cell > relaying, or,
Persistent district=adjacent cell > relaying, or,
Persistent district=adjacent cell=relaying
Wherein, for the priority relationship of persistent district and adjacent cell, persistent district > adjacent cell, refers to that the priority of persistent district is greater than the priority of adjacent cell, persistent district=adjacent cell, refers to that the priority of persistent district is identical with the priority of adjacent cell.
The reference signal of information source can be certain signal specific, and this signal specific can embody the channel quality of information source, cell reference signals (CRS, Cell-specific Reference Signal) of such as D2N network etc.
Wherein, reference signal strength can but be not limited only to Reference Signal Received Power (the Reference Signal Receiving Power referring to this reference signal, or Reference Signal Received Quality (Reference Signal Receiving Quality, RSRQ) RSRP).
Below for the information source that can detect for persistent district and adjacent cell, the preferred implementation of select target information source is illustrated.
The mode one of select target information source:
D2D sends the reference signal strength first predetermined condition that UE judges whether adjacent cell; If there is the reference signal strength first predetermined condition of adjacent cell, D2D sends UE and selects this adjacent cell as target information source; If do not have the reference signal strength first predetermined condition of adjacent cell, D2D sends UE and selects persistent district as target information source.
Wherein, first predetermined condition refers to, reference signal strength is greater than the reference signal strength of persistent district, and the duration that difference is greater than the second threshold value exceedes very first time threshold value.
Wherein, the value of very first time threshold value is determined according to practical application request, and under extreme case, the value of very first time threshold value can be 0.
Wherein, the value of the second threshold value is determined according to practical application request.Preferably, the second threshold value is signal strength signal intensity deviant corresponding to D2D resource selection.
Wherein, if there is the reference signal strength first predetermined condition of multiple adjacent cell, the adjacent cell that can therefrom select reference signal strength maximum is as target information source, also can therefrom Stochastic choice adjacent cell as target information source, an adjacent cell therefrom can also be selected as target information source according to other rules.
Under D2D Discovery scene, the D2D supposing to be in D2N IDLE state sends UE(hereinafter referred to as UE) reside in community A(Cell A), one select the implementation of D2D Discovery transmission resource pool as follows in the manner described above:
UE performs adjacent cell measurement, can but be not limited only to, when CRS adjacent cell being detected, synchronizing signal etc., determine to detect adjacent cell, such as Cell B.
If the CRS signal strength signal intensity of the D2N link of Cell A is S
serving_cell, the CRS signal strength signal intensity of the D2N link of adjacent cell Cell B is S
neighbour_cell_B, offset is signal strength signal intensity deviant corresponding to D2D resource selection, so once the CRS signal strength signal intensity of Cell B and Cell A meets: S
neighbour_cell_B>=S
serving_cell+ offset, and after certain time (very first time threshold value), then UE selects the D2D Discovery that Cell B is corresponding to send resource pool, namely the D2D Discovery obtaining Cell B from the system information of Cell B sends resource pool, and therefrom selects D2D Discovery message to send the resource used.
The selection mode that D2D under D2D Communication scene sends resource pool with reference to said process, can repeat no more here.
The mode two of select target information source:
D2D sends UE and judges whether the reference signal strength of persistent district is greater than the first threshold value;
If the reference signal strength of persistent district is greater than the first threshold value, D2D sends UE and selects persistent district as target information source;
The first threshold value that if the reference signal strength of persistent district is not more than (being namely less than or equal to), D2D sends a UE select target information source in the manner described above.
Wherein, the value of the first threshold value is determined according to practical application request.
Under D2D Dicovery scene, the D2D supposing to be in D2N IDLE state sends UE(hereinafter referred to as UE) reside in community A(Cell A), two select the implementation of D2D Dicovery transmission resource pool as follows in the manner described above:
If D2N link CRS signal strength signal intensity (RSRP or RSRQ) of Cell A is greater than the first threshold value, UE does not perform adjacent cell measurement, and the D2D Dicovery that choice for use Cell A is corresponding sends resource pool.Can be D2D Dicovery message when needing to send, the D2D Dicovery transmission resource pool that UE broadcast from Cell A, select resource to send.
Along with the movement of UE, when the D2N link CRS signal strength signal intensity of Cell A is less than or equal to the first threshold value, UE performs adjacent cell measurement, can but be not limited only to, when CRS adjacent cell being detected, synchronizing signal etc., determine to detect adjacent cell, such as Cell B.
If the CRS signal strength signal intensity of the D2N link of Cell A is S
serving_cell, the CRS signal strength signal intensity of the D2N link of adjacent cell Cell B is S
neighbour_cell_B, offset is signal strength signal intensity deviant corresponding to D2D resource selection, so once the CRS signal strength signal intensity of Cell B and Cell A meets: S
neighbour_cell_B>=S
serving_cell+ offset, and after certain time (very first time threshold value), then UE judgement needs to carry out the switching that D2D Dicovery sends resource pool, namely the D2D Dicovery discharging Cell A sends and speeds from cloud, the D2D Dicovery obtaining Cell B from the system information of Cell B sends resource pool, and therefrom selects D2D Dicovery message to send the resource used.
The selection mode that D2D under D2D Communication scene sends resource pool with reference to said process, can repeat no more here.
The mode three of select target information source:
D2D sends UE sends information source corresponding to resource pool priority according to D2D, selects information source that priority is the highest as target information source.
Wherein, if there is the information source of multiple limit priority, then can Stochastic choice information source that priority is the highest as target information source, also can therefrom select information source that reference signal strength is the highest as target information source.
Under D2D Dicovery scene, the D2D supposing to be in D2N IDLE state sends UE(hereinafter referred to as UE) reside in community A(Cell A), three select the implementation of D2D Dicovery transmission resource pool as follows in the manner described above:
If when the D2N link CRS intensity of Cell A is higher than the first threshold value, then UE does not perform adjacent cell measurement, when D2D Discovery message needs to send, then UE sends resource pool from the D2D Discovery that Cell A broadcasts and selects resource to send.
Along with UE moves, when the D2N link CRS signal strength signal intensity of Cell A is lower than the first threshold value, UE starts to perform other synchronizing signals of detection.Suppose synchronizing signal relaying (relay) UE being detected.
If information source priority is as follows: persistent district >relay UE, so the D2D Discovery of UE prioritizing selection persistent district sends resource pool;
If information source priority is as follows: persistent district=relay UE, so UE can one of them information source of Stochastic choice D2D Discovery send resource pool.
The selection mode that D2D under D2D Communication scene sends resource pool with reference to said process, can repeat no more here.
The mode four of select target information source:
D2D sends UE and judges whether the priority of persistent district is greater than the priority of adjacent cell;
If the priority of persistent district is greater than the priority of adjacent cell, D2D sends the adjacent cell that UE judges whether reference signal strength second predetermined condition, if had, then select the adjacent cell of reference signal strength second predetermined condition as target information source, otherwise, select persistent district as target information source;
If the priority of persistent district is not more than the priority of adjacent cell, D2D sends UE and judges whether that reference signal strength meets the adjacent cell of the 3rd predetermined condition, if had, reference signal strength is then selected to meet the adjacent cell of the 3rd predetermined condition as target information source, otherwise, select persistent district as target information source.
Second predetermined condition refers to, reference signal strength is greater than the reference signal strength of persistent district, and difference is greater than the duration of the 3rd threshold value more than the second time threshold.
Meet the 3rd predetermined condition to refer to, reference signal strength is greater than the reference signal strength of persistent district, and difference is greater than the duration of the 4th threshold value more than the 3rd time threshold.
Wherein, the value of the second time threshold and the 3rd time threshold is determined according to practical application request, and under extreme case, the value of the second time threshold can go 0, and the value of the 3rd time threshold also can get 0.
Wherein, the value of the 3rd threshold value and the 4th threshold value is determined according to practical application request.
When the priority of persistent district is the highest, it is desirable to preferentially to choose persistent district as Target cell.Preferably, in practical application, the 3rd threshold value can be set and be greater than the 4th threshold value.
Wherein, priority for persistent district is greater than the situation of the priority of adjacent cell, if there is the reference signal strength of multiple adjacent cell to be greater than the duration of the 3rd threshold value more than the second time threshold, the adjacent cell that can therefrom select reference signal strength maximum is as target information source, also can therefrom Stochastic choice adjacent cell as target information source, an adjacent cell therefrom can also be selected as target information source according to other rules.
Wherein, priority for persistent district is not more than the situation of the priority of adjacent cell, if there is the reference signal strength of multiple adjacent cell to be greater than the duration of the 4th threshold value more than the 3rd time threshold, the adjacent cell that can therefrom select reference signal strength maximum is as target information source, also can therefrom Stochastic choice adjacent cell as target information source, an adjacent cell therefrom can also be selected as target information source according to other rules.
Under D2D Discovery scene, the D2D supposing to be in D2N IDLE state sends UE(hereinafter referred to as UE) reside in community A(Cell A), four select the implementation of D2D Discovery transmission resource pool as follows in the manner described above:
UE performs adjacent cell measurement, can but be not limited only to, when CRS adjacent cell being detected, synchronizing signal etc., determine to detect adjacent cell, such as Cell B.
UE, according to the precedence information obtained, judges whether the priority of Cell A is greater than the priority of Cell B.
If the priority of Cell A is greater than the priority of Cell B, the D2N link CRS signal strength signal intensity as Cell B is only had to be greater than the 3rd threshold value compared with the D2N link CRS signal strength signal intensity of Cell A, and the duration more than the second time threshold time, the D2D Discovery of Cell B just can be selected to send resource pool, and other situations all select the D2D Discovery of Cell A to send resource pool.
If the priority of Cell A equals the priority of Cell B, only need to consider reference signal strength, namely the D2N link CRS signal strength signal intensity that the D2N link CRS signal strength signal intensity of Cell B compares Cell A is greater than the 4th threshold value, and the duration more than the 3rd time threshold time, select the D2D Discovery of Cell B to send resource pool, other situations select the D2D Discovery of C ell A to send resource pool.
Preferably, the 3rd threshold value is greater than the 4th threshold value.
Preferably, the 4th threshold value is identical with the second threshold value value, and the 3rd time threshold is identical with very first time threshold value value.
The selection mode that D2D under D2D Communication scene sends resource pool with reference to said process, can repeat no more here.
The mode five of select target information source:
D2D sends UE and judges whether the reference signal strength of persistent district is greater than the first threshold value;
If the reference signal strength of persistent district is greater than the first threshold value, D2D sends UE and selects persistent district as target information source;
If the reference signal strength of persistent district is not more than the first threshold value, D2D sends UE four select target information sources in the manner described above.
Under D2D Dicovery scene, the D2D supposing to be in D2N IDLE state sends UE(hereinafter referred to as UE) reside in community A(Cell A), five select the implementation of D2D Dicovery transmission resource pool as follows in the manner described above:
If D2N link CRS signal strength signal intensity (RSRP or RSRQ) of Cell A is greater than the first threshold value, UE does not perform adjacent cell measurement, and the D2D Dicovery that choice for use Cell A is corresponding sends resource pool.Can be D2D Dicovery message when needing to send, the D2D Dicovery transmission resource pool that UE broadcast from Cell A, select resource to send.
Along with the movement of UE, when the D2N link CRS signal strength signal intensity of Cell A is less than or equal to the first threshold value, UE performs adjacent cell measurement, can but be not limited only to, when CRS adjacent cell being detected, synchronizing signal etc., determine to detect adjacent cell, such as Cell B.
UE, according to the precedence information obtained, judges whether the priority of Cell A is greater than the priority of Cell B.
If the priority of Cell A is greater than the priority of Cell B, the D2N link CRS signal strength signal intensity as Cell B is only had to be greater than the 3rd threshold value compared with the D2N link CRS signal strength signal intensity of Cell A, and the duration more than the second time threshold time, the D2D Discovery of Cell B just can be selected to send resource pool, and other situations all select the D2D Discovery of Cell A to send resource pool.
If the priority of Cell A equals the priority of Cell B, only need to consider reference signal strength, namely the D2N link CRS signal strength signal intensity that the D2N link CRS signal strength signal intensity of Cell B compares Cell A is greater than the 4th threshold value, and the duration more than the 3rd time threshold time, select the D2D Discovery of Cell B to send resource pool, other situations select the D2D Discovery of C ell A to send resource pool.
Preferably, the 3rd threshold value is greater than the 4th threshold value.
Preferably, the 4th threshold value is identical with the second threshold value value, and the 3rd time threshold is identical with very first time threshold value value.
The selection mode that D2D under D2D Communication scene sends resource pool with reference to said process, can repeat no more here.
If the information source that can detect is persistent district and relaying, the implementation of select target information source with reference to the selection mode of each target information source above-mentioned, can repeat no more here.
If the information source that can detect is persistent district, adjacent cell and relaying, and adjacent cell is identical with the priority of relaying, the implementation of select target information source with reference to the selection mode of each target information source above-mentioned, can repeat no more here.
If the information source that can detect is persistent district, adjacent cell and relaying, and the priority of adjacent cell is greater than the priority of relaying.Can with reference to aforesaid way one ~ tri-during select target information source.Also can with reference to aforesaid way four during select target information source, but when the priority of persistent district is greater than the priority of adjacent cell, if do not have adjacent cell to meet above-mentioned condition, then judge whether that the reference signal strength of relaying is greater than the relaying of duration more than the 4th time threshold of the 5th threshold value compared with the reference signal strength of persistent district, if had, select this relaying as target information source, otherwise, select persistent district as target information source; When the priority of persistent district is not more than the priority of adjacent cell, if do not have adjacent cell to meet above-mentioned condition, then judge whether that the reference signal strength of relaying is greater than the relaying of duration more than the 5th time threshold of the 6th threshold value compared with the reference signal strength of persistent district, if had, select this relaying as target information source, otherwise, select persistent district as target information source.Also can with reference to aforesaid way five during select target information source.
If the information source that can detect is persistent district, adjacent cell and relaying, and the priority of relaying is greater than the priority of adjacent cell.Can with reference to aforesaid way one ~ tri-during select target information source.Also first can judge during select target information source whether the priority of persistent district is greater than the priority of relaying, when the priority of persistent district is greater than the priority of relaying, judge whether relaying and adjacent cell meet predetermined condition successively, if there is relaying to meet predetermined condition, prioritizing selection relaying is as target information source, only have when relaying and adjacent cell all do not meet predetermined condition, just select persistent district as target information source; When the priority of persistent district is not more than the priority of relaying, judge whether relaying and adjacent cell meet predetermined condition successively, if there is relaying to meet predetermined condition, prioritizing selection relaying is as target information source, only have when relaying and adjacent cell all do not meet predetermined condition, just select persistent district as target information source.Before judging whether the priority of persistent district is greater than the priority of relaying, also first can judge whether the reference signal strength of persistent district is greater than the first threshold value, if be greater than the first threshold value, select persistent district as target information source, otherwise judge whether the priority of persistent district is greater than the priority of relaying, and according to said process select target information source.
Based on the inventive concept same with method, the embodiment of the present invention also provides a kind of D2D to send UE, as shown in Figure 2, comprising:
Target information source selects module 201, for sending the reference signal strength of information source corresponding to resource pool and/or the priority of information source according to D2D, select target information source;
Resource pool selects module 202, and the D2D corresponding for select target information source sends resource pool.
Embodiments provide the selection scheme that D2D sends resource pool.Select according to the reference signal strength of information source and/or the priority etc. of information source, ensure that D2D sends UE when mobile, suitable D2D transmission resource pool can be selected to carry out the transmission of D2D Discovery/Communication message.
Preferably, target information source select module 201 for:
Judge whether the reference signal strength first predetermined condition of adjacent cell or relaying, first predetermined condition refers to: reference signal strength is greater than the reference signal strength of persistent district, and the duration that difference is greater than the second threshold value exceedes very first time threshold value;
If there is the reference signal strength first predetermined condition of adjacent cell or relaying, select described adjacent cell or relaying as target information source;
If there is no the reference signal strength first predetermined condition of adjacent cell or relaying, select persistent district as target information source.
Preferably, described second threshold value is signal strength signal intensity deviant corresponding to D2D resource selection.
Preferably, when judging whether the reference signal strength first predetermined condition of adjacent cell or relaying, described target information source select module 201 for:
Judge whether the reference signal strength of persistent district is greater than the first threshold value;
If the reference signal strength of persistent district is greater than the first threshold value, select described persistent district as target information source;
If the reference signal strength of persistent district is less than or equal to the first threshold value, judge whether the reference signal strength first predetermined condition of adjacent cell or relaying.
Preferably, described target information source select module 201 for:
Send the priority of information source corresponding to resource pool according to D2D, select information source that priority is the highest as target information source.
Preferably, described information source comprises: persistent district, adjacent cell and relaying.
Preferably, the priority of information source is pre-configured or persistent district broadcast.
Preferably: the priority of persistent district is greater than the priority of adjacent cell, the priority of adjacent cell is greater than the priority of relaying; Or the priority of persistent district equals the priority of adjacent cell, is greater than the priority of relaying; Or persistent district, adjacent cell are identical with the priority of relaying.
Preferably, described target information source select module 201 for:
Judge whether the priority of persistent district is greater than the priority of adjacent cell and relaying;
If the priority of persistent district is greater than the priority of adjacent cell and relaying, judge whether adjacent cell or the relaying of reference signal strength second predetermined condition, if had, then select the adjacent cell of reference signal strength second predetermined condition or relaying as target information source, otherwise, select persistent district as target information source; Second predetermined condition refers to, reference signal strength is greater than the reference signal strength of persistent district, and difference is greater than the duration of the 3rd threshold value more than the second time threshold.
If the priority of persistent district is less than or equal to the priority of adjacent cell or relaying, judge whether that reference signal strength meets the 3rd pre-conditioned adjacent cell or relaying, if had, reference signal strength is then selected to meet the 3rd pre-conditioned adjacent cell or relaying as target information source, otherwise, select persistent district as target information source.Meet the 3rd pre-conditionedly to refer to, reference signal strength is greater than the reference signal strength of persistent district, and difference is greater than the duration of the 4th threshold value more than the 3rd time threshold.
Preferably, described 3rd threshold value is greater than described 4th threshold value.
Preferably, when judging whether the priority of persistent district is greater than the priority of adjacent cell and relaying, described target information source select module 201 for:
Judge whether the reference signal strength of persistent district is greater than the first threshold value;
If the reference signal strength of persistent district is greater than the first threshold value, select persistent district as target information source;
If the reference signal strength of persistent district is less than or equal to the first threshold value, judge whether the priority of persistent district is greater than the priority of adjacent cell and relaying.
Preferably, the reference signal of information source comprises: cell reference signals.
Based on the inventive concept same with method, the embodiment of the present invention also provides a kind of D2D to send UE, as shown in Figure 3, comprises processor 301 and memory 302.
Processor 301 is configured to perform the computer program with following function: send the reference signal strength of information source corresponding to resource pool and/or the priority of information source according to D2D, select target information source; The D2D transmission resource pool that select target information source is corresponding;
Memory 302 is configured to the code storing above computer program.
Embodiments provide the selection scheme that D2D sends resource pool.Select according to the reference signal strength of information source and/or the priority etc. of information source, ensure that D2D sends UE when mobile, suitable D2D transmission resource pool can be selected to carry out the transmission of D2D Discovery/Communication message.
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, CD-ROM, 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.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
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. device-to-device D2D sends a system of selection for resource pool, it is characterized in that, comprising:
D2D sends subscriber equipment and sends the reference signal strength of information source corresponding to resource pool and/or the priority of information source according to D2D, select target information source;
The D2D that described D2D sends subscriber equipment select target information source corresponding sends resource pool.
2. method according to claim 1, is characterized in that, described D2D sends subscriber equipment sends information source corresponding to resource pool reference signal strength according to D2D, and select target information source, comprising:
Described D2D sends the reference signal first predetermined condition that subscriber equipment judges whether adjacent cell or relaying, described first predetermined condition refers to: reference signal strength is greater than the reference signal strength of persistent district, and the duration that difference is greater than the second threshold value exceedes very first time threshold value;
If there is the reference signal strength first predetermined condition of adjacent cell or relaying, described D2D sends subscriber equipment and selects described adjacent cell or relaying as target information source;
If do not have the reference signal first predetermined condition of adjacent cell or relaying, described D2D sends subscriber equipment and selects persistent district as target information source.
3. method according to claim 2, is characterized in that, described second threshold value is signal strength signal intensity deviant corresponding to D2D resource selection.
4. according to the method in claim 2 or 3, it is characterized in that, described D2D sends the reference signal strength first predetermined condition that subscriber equipment judges whether adjacent cell or relaying, comprising:
Described D2D sends subscriber equipment and judges whether the reference signal strength of persistent district is greater than the first threshold value;
If the reference signal strength of persistent district is greater than the first threshold value, described D2D sends subscriber equipment and selects described persistent district as target information source;
If the reference signal strength of persistent district is less than or equal to the first threshold value, described D2D sends the reference signal strength first predetermined condition that subscriber equipment judges whether adjacent cell or relaying.
5. method according to claim 1, is characterized in that, described D2D sends subscriber equipment sends information source corresponding to resource pool priority according to D2D, and select target information source, comprising:
Described D2D sends subscriber equipment sends information source corresponding to resource pool priority according to D2D, selects information source that priority is the highest as target information source.
6. method according to claim 1, is characterized in that, described D2D sends subscriber equipment and sends the reference signal strength of information source corresponding to resource pool and the priority of information source according to D2D, and select target information source, comprising:
Described D2D sends subscriber equipment and judges whether the priority of persistent district is greater than the priority of adjacent cell and relaying;
If the priority of persistent district is greater than the priority of adjacent cell and relaying, described D2D sends adjacent cell or the relaying that subscriber equipment judges whether reference signal strength second predetermined condition, if had, then select the adjacent cell of second predetermined condition or relaying as target information source, otherwise, select persistent district as target information source; Second predetermined condition refers to: reference signal strength is greater than the reference signal strength of persistent district, and difference is greater than the duration of the 3rd threshold value more than the second time threshold;
If the priority of persistent district is less than or equal to the priority of adjacent cell or relaying, described D2D sends subscriber equipment and judges whether that reference signal strength meets adjacent cell or the relaying of the 3rd predetermined condition, if had, then select to meet the adjacent cell of the 3rd predetermined condition or relaying as target information source, otherwise, select persistent district as target information source; Meet the 3rd predetermined condition to refer to: reference signal strength is greater than the reference signal strength of persistent district, and difference is greater than the duration of the 4th threshold value more than the 3rd time threshold.
7. method according to claim 6, is characterized in that, described 3rd threshold value is greater than described 4th threshold value.
8. the method according to claim 6 or 7, is characterized in that, described D2D sends subscriber equipment and judges whether the priority of persistent district is greater than the priority of adjacent cell and relaying, comprising:
Described D2D sends subscriber equipment and judges whether the reference signal strength of persistent district is greater than the first threshold value;
If the reference signal strength of persistent district is greater than the first threshold value, described D2D sends subscriber equipment and selects persistent district as target information source;
If the reference signal strength of persistent district is less than or equal to the first threshold value, described D2D sends subscriber equipment and judges whether the priority of persistent district is greater than the priority of adjacent cell and relaying.
9. the method according to claims 1 to 3,5 ~ 7 any one, is characterized in that, the reference signal of information source comprises: cell reference signals.
10. the method according to claims 1 to 3,5 ~ 7 any one, is characterized in that, described information source comprises: persistent district, adjacent cell and relaying.
11. methods according to claim 10, is characterized in that, the priority of information source is pre-configured or persistent district broadcast.
12. methods according to claim 10 or 11, is characterized in that:
The priority of persistent district is greater than the priority of adjacent cell, and the priority of adjacent cell is greater than the priority of relaying; Or,
The priority of persistent district equals the priority of adjacent cell, is greater than the priority of relaying; Or,
Persistent district, adjacent cell are identical with the priority of relaying.
13. 1 kinds of D2D send subscriber equipment, it is characterized in that, comprising:
Target information source selects module, for sending the reference signal strength of information source corresponding to resource pool and/or the priority of information source according to D2D, select target information source;
Resource pool selects module, and the D2D corresponding for select target information source sends resource pool.
14. D2D according to claim 13 send subscriber equipment, it is characterized in that, described target information source selects module to be used for:
Judge whether the reference signal strength first predetermined condition of adjacent cell or relaying, described first predetermined condition refers to: reference signal strength is greater than the reference signal strength of persistent district, and the duration that difference is greater than the second threshold value exceedes very first time threshold value;
If there is the reference signal strength first predetermined condition of adjacent cell or relaying, select described adjacent cell or relaying as target information source;
If do not have the reference signal strength of adjacent cell or relaying to meet first to impose a condition, select persistent district as target information source.
15. D2D according to claim 14 send subscriber equipmenies, it is characterized in that, described second threshold value is signal strength signal intensity deviant corresponding to D2D resource selection.
16. D2D according to claims 14 or 15 send subscriber equipment, it is characterized in that, when judging whether the reference signal strength first predetermined condition of adjacent cell or relaying, described target information source selects module to be used for:
Judge whether the reference signal strength of persistent district is greater than the first threshold value;
If the reference signal strength of persistent district is greater than the first threshold value, select described persistent district as target information source;
If the reference signal strength of persistent district is less than or equal to the first threshold value, judge whether the reference signal strength first predetermined condition of adjacent cell or relaying.
17. D2D according to claim 13 send subscriber equipment, it is characterized in that, described target information source selects module to be used for:
Send the priority of information source corresponding to resource pool according to D2D, select information source that priority is the highest as target information source.
18. D2D according to claim 13 send subscriber equipment, it is characterized in that, described target information source selects module to be used for:
Judge whether the priority of persistent district is greater than the priority of adjacent cell and relaying;
If the priority of persistent district is greater than the priority of adjacent cell and relaying, judge whether adjacent cell or the relaying of reference signal strength second predetermined condition, if had, then select the adjacent cell of reference signal strength second predetermined condition or relaying as target information source, otherwise, select persistent district as target information source; Second predetermined condition indicates: reference signal strength is greater than the reference signal strength of persistent district, and difference is greater than the duration of the 3rd threshold value more than the second time threshold;
If the priority of persistent district is less than or equal to the priority of adjacent cell or relaying, judge whether that reference signal strength meets the 3rd predetermined condition, if had, reference signal strength is then selected to meet the adjacent cell of the 3rd predetermined condition or relaying as target information source, otherwise, select persistent district as target information source; Meet the 3rd predetermined condition to refer to, reference signal strength is greater than persistent district reference signal strength, and difference is greater than the duration of the 4th threshold value more than the 3rd time threshold.
19. D2D according to claim 18 send subscriber equipment, and it is characterized in that, described 3rd threshold value is greater than described 4th threshold value.
20. D2D according to claim 18 or 19 send subscriber equipment, it is characterized in that, when judging whether the priority of persistent district is greater than the priority of adjacent cell and relaying, described target information source selection module is used for:
Judge whether the reference signal strength of persistent district is greater than the first threshold value;
If the reference signal strength of persistent district is greater than the first threshold value, select persistent district as target information source;
If the reference signal strength of persistent district is less than or equal to the first threshold value, judge whether the priority of persistent district is greater than the priority of adjacent cell and relaying.
21. D2D according to claim 13 ~ 15,17 ~ 19 any one send subscriber equipment, and it is characterized in that, the reference signal of information source comprises: cell reference signals.
22. D2D according to claim 13 ~ 15,17 ~ 19 any one send subscriber equipment, and it is characterized in that, described information source comprises: persistent district, adjacent cell and relaying.
23. D2D according to claim 22 send subscriber equipment, it is characterized in that, the priority of information source is pre-configured or persistent district broadcast.
24. D2D according to claim 22 or 23 send subscriber equipment, it is characterized in that:
The priority of persistent district is greater than the priority of adjacent cell, and the priority of adjacent cell is greater than the priority of relaying; Or,
The priority of persistent district equals the priority of adjacent cell, is greater than the priority of relaying; Or,
Persistent district, adjacent cell are identical with the priority of relaying.
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| CN201410097698.3A CN104918330B (en) | 2014-03-14 | 2014-03-14 | A kind of D2D sends the selection method and D2D transmissions UE of resource pool |
| PCT/CN2015/073606 WO2015135431A1 (en) | 2014-03-14 | 2015-03-04 | Method for selecting d2d transmission resource pool and d2d transmission ue |
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| CN201410097698.3A CN104918330B (en) | 2014-03-14 | 2014-03-14 | A kind of D2D sends the selection method and D2D transmissions UE of resource pool |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017075921A1 (en) * | 2015-11-05 | 2017-05-11 | 宇龙计算机通信科技(深圳)有限公司 | Access control method and device for remote terminal, terminal, and base station |
| CN107920339A (en) * | 2016-10-07 | 2018-04-17 | 宏碁股份有限公司 | Carry out the method and associated communication system of point-to-point communication |
| CN108781434A (en) * | 2016-04-01 | 2018-11-09 | 富士通株式会社 | Resource allocation methods, device and communication system |
| CN111988772A (en) * | 2019-05-23 | 2020-11-24 | 北京邮电大学 | Terminal discovery method and equipment |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015065110A1 (en) * | 2013-10-31 | 2015-05-07 | 엘지전자(주) | Method for transmitting discovery message in wireless communication system and apparatus for same |
| WO2017117712A1 (en) * | 2016-01-05 | 2017-07-13 | 富士通株式会社 | Information transmission method, apparatus and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011124015A1 (en) * | 2010-04-06 | 2011-10-13 | Nokia Corporation | Method and apparatus for managing inter-cell interference for device-to-device communications |
| CN102547871A (en) * | 2012-02-07 | 2012-07-04 | 华为技术有限公司 | Method and device for consulting resource in D2D (Device To Device) communication |
| CN103037450A (en) * | 2011-09-29 | 2013-04-10 | 华为技术有限公司 | Method and device for communication mode switching |
| CN103037448A (en) * | 2011-09-30 | 2013-04-10 | 华为技术有限公司 | Content publishing method and user device |
| CN103209492A (en) * | 2011-09-15 | 2013-07-17 | 华为技术有限公司 | Radio resource management method and communication device |
| CN103634852A (en) * | 2012-08-28 | 2014-03-12 | 华为技术有限公司 | Resource negotiation method, devices and system of device-to-device (D2D) communication |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102404837B (en) * | 2011-12-07 | 2014-08-06 | 华为技术有限公司 | Method, device and system for controlling transmitting power of equipment |
| US8914054B2 (en) * | 2012-03-21 | 2014-12-16 | Telefonaktiebolaget L M Ericsson (Publ) | Dynamic resource selection to reduce interference resulting from direct device to device communications |
| CN103327568B (en) * | 2012-03-21 | 2016-12-14 | 中国移动通信集团公司 | Resource allocation message sending method, method for discovering equipment and relevant device |
-
2014
- 2014-03-14 CN CN201410097698.3A patent/CN104918330B/en active Active
-
2015
- 2015-03-04 WO PCT/CN2015/073606 patent/WO2015135431A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011124015A1 (en) * | 2010-04-06 | 2011-10-13 | Nokia Corporation | Method and apparatus for managing inter-cell interference for device-to-device communications |
| CN103209492A (en) * | 2011-09-15 | 2013-07-17 | 华为技术有限公司 | Radio resource management method and communication device |
| CN103037450A (en) * | 2011-09-29 | 2013-04-10 | 华为技术有限公司 | Method and device for communication mode switching |
| CN103037448A (en) * | 2011-09-30 | 2013-04-10 | 华为技术有限公司 | Content publishing method and user device |
| CN102547871A (en) * | 2012-02-07 | 2012-07-04 | 华为技术有限公司 | Method and device for consulting resource in D2D (Device To Device) communication |
| CN103634852A (en) * | 2012-08-28 | 2014-03-12 | 华为技术有限公司 | Resource negotiation method, devices and system of device-to-device (D2D) communication |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017075921A1 (en) * | 2015-11-05 | 2017-05-11 | 宇龙计算机通信科技(深圳)有限公司 | Access control method and device for remote terminal, terminal, and base station |
| CN108781434A (en) * | 2016-04-01 | 2018-11-09 | 富士通株式会社 | Resource allocation methods, device and communication system |
| CN107920339A (en) * | 2016-10-07 | 2018-04-17 | 宏碁股份有限公司 | Carry out the method and associated communication system of point-to-point communication |
| CN111988772A (en) * | 2019-05-23 | 2020-11-24 | 北京邮电大学 | Terminal discovery method and equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015135431A1 (en) | 2015-09-17 |
| CN104918330B (en) | 2018-11-02 |
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