CN104159304A

CN104159304A - Device to device (D2D) communication method, and base station

Info

Publication number: CN104159304A
Application number: CN201310180254.1A
Authority: CN
Inventors: 李兵兵; 但念念; 兰冰; 常俊仁
Original assignee: Huawei Technologies Co Ltd; Xidian University
Current assignee: Huawei Technologies Co Ltd; Xidian University
Priority date: 2013-05-15
Filing date: 2013-05-15
Publication date: 2014-11-19

Abstract

The embodiments of the invention provide a device to device (D2D) communication method. The method comprises: a first base station, after all terminals in a first cell are registered, receiving a D2D communication connection establishing request sent by a first terminal; sending an identity identification of the first terminal and an identity identification of a second terminal to a second base station; obtaining link quality information fed back by the second terminal according to a detection signal through the second base station; distributing N groups of first candidate resources to the first terminal, and exchanging M groups of second candidate resources with the second base station; according to a performance indicator, ordering M+N groups of candidate resources; and in the ordered M+N groups of candidate resources, selecting one group of candidate resources as target candidate resources to enable terminal communication users to carry out D2D communication in the target candidate resources. Through the D2D communication method provided by the embodiments of the invention, interference caused by co-channel interference can be reduced to the maximum, and the D2D communication performance is improved.

Description

Terminal-to-terminal service communication means, base station

Technical field

The present invention relates to the communications field, be specifically related to a kind of terminal-to-terminal service communication means, base station.

Background technology

In order to improve system effectiveness and resource utilization, when between terminal during close together, between terminal, can by base station, not forward the communication of carrying out terminal-to-terminal service (device to device, D2D).The D2D of institute communication is the communication mode forwarding by base station originally, change the direct communication between the terminal that needs communication into, but base station still with the transmission of carrying out a pair of terminal retentive control information that D2D communicates by letter, realize disturbing and control, the functions such as charging, and be D2D user resource allocation, make D2D communication work in licensed band, because the data of transmitting between terminal in this kind of communication do not need the switching by base station, but direct transfer between user, D2D technology has reduced the burden of base station communication, has saved the shared communication resource; And, D2D user can with phone user's multiplexing time-frequency resource of carrying out normal cellular communications, thereby traffic rate and spectrum efficiency are improved greatly; Can reach the effect of the battery consumption that can reduce mobile terminal in addition.

For D2D communication, the problem that need to face is exactly in model of document resource sharing, the interference problem between phone user and D2D user, and in shared model, phone user and D2D user share running time-frequency resource.Under shared model, between phone user and D2D user, can produce and disturb, disturb and both comprised the interference that this cell cellular user is right to D2D user, also comprise the interference that neighbor cell phone user is right to D2D user.Prior art, under the D2D signal intelligence of Kua community, the community by D2D recipient's direct-cut operation to D2D transmit leg place, then carries out resource distribution according to the method for single community D2D and power controls to reduce the interference between D2D communication and cellular communication.

But, this method only consider in Liao Zhe community phone user to D2D user the interference problem to receiving terminal, and do not consider the interference problem of phone user in neighbor cell, in real system, if during the multiplexing phone user's of D2D user ascending resource, can be subject to neighbor cell phone user's interference simultaneously.

Summary of the invention

The object of this invention is to provide a kind of D2D communication means, to solve in the D2D communication process of Kua community, the interference problem of phone user to D2D user in neighbor cell.

For achieving the above object, first aspect, the embodiment of the present invention provides a kind of D2D communication means, and described method comprises:

After whole endpoint registrations of the first base station in the first community, receive the D2D communication connection foundation request that first terminal sends, the described D2D communication connection request of setting up is communicated by letter for setting up D2D with the second terminal, described the first community is the community at described the first place, base station, described first terminal is in described the first community, described the second terminal is in the second community, described the second community is the adjacent area of described the first community, described first terminal is the transmit leg of described D2D communication, described the second terminal is the recipient of described D2D communication, the identify label of the identify label that described D2D communication connection comprises described the second terminal in setting up and asking and the second base station of described the second community, described first terminal and the second terminal form a terminal communication user couple,

Described the first base station sends the identify label of described first terminal and the identify label of described the second terminal to described the second base station, so that described the second terminal is informed by the identify label of described first terminal in described the second base station, and inform that described the second terminal receives the detectable signal that described first terminal sends;

By described the second base station, obtain described the second terminal according to the link quality information of described detectable signal feedback;

In described the first base station based on described link quality information, judge that described first terminal and the second terminal can carry out D2D while communicating by letter, for distributing N, described first terminal organizes the first resource to be selected, and organize the second resource to be selected with described the second base station exchange M, described M is organized to the second resource to be selected and described N and organize the first resource to be selected and form M+N and organize resource to be selected, it is that described the second base station is described the second terminal distribution that the M of institute organizes the second resource to be selected;

Described the first base station is the interference to receiving side terminal according to the phone user of multiplexing resource to be selected in Liang Ge community, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected.

Based on first aspect, in the possible execution mode of the first, in described the first base station based on described link quality information, judge that described first terminal and the second terminal can carry out D2D while communicating by letter, for distributing N, described first terminal organizes the first resource to be selected, and organize the second resource to be selected with described the second base station exchange M, described M is organized to the second resource to be selected and described N to be organized the first resource to be selected and forms M+N and organize resource to be selected, it is that described the second base station is described the second terminal distribution that the M of institute organizes the second resource to be selected, afterwards, also comprise:

Described the first base station is that described M+N organizes resource to be selected and sorts according to performance index.

In the possible execution mode of the first based on first aspect, in the possible execution mode of the second, described the first base station is that described M+N organizes resource to be selected and sorts according to performance index, specifically comprises:

According to multiplexing described M+N organize the phone user of resource to be selected and the right throughput of described D2D communication user and/or,

After multiplexing described M+N organizes resource to be selected, described phone user sorts to the right interference value of described D2D communication user.

In the possible execution mode of the first based on first aspect, in the third possible execution mode, described the first base station is that described M+N organizes resource to be selected and sorts according to performance index, specifically comprises:

According to multiplexing described M+N organize the phone user of resource to be selected and total transmitting power of described D2D communication user and/or,

After multiplexing described M+N organizes resource to be selected, described phone user sorts to the interference value of described D2D communication user.

Based on first aspect or possible execution mode or possible execution mode or the third the possible execution mode of the second of the first, in the 4th kind of possible execution mode, described the first base station is the interference to receiving side terminal according to the phone user of multiplexing resource to be selected in Liang Ge community, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected, specifically comprise:

If described M organizes the second resource to be selected and described N and organizes in resource to be selected and have overlapping resource, for described terminal communication user is to selecting described overlapping resource as target resource to be selected.

Based on first aspect or possible execution mode or possible execution mode or the third the possible execution mode of the second of the first, in the 5th kind of possible execution mode, described the first base station is the interference to receiving side terminal according to the phone user of multiplexing resource to be selected in Liang Ge community, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected, specifically comprise:

M+N after described sequence organizes in resource to be selected, according to sequence sequencing, is that described D2D communication is to choosing one group of money to be selected as target resource to be selected.

The 4th kind of possible execution mode or the 5th kind of possible execution mode based on first aspect, in the 6th kind of possible execution mode, after choosing described target resource to be selected, if select described target resource to be selected, be that described the first base station is the resource to be selected that described first terminal distributes:

Described the second base station is informed by described target resource to be selected in described the first base station, so that described the second terminal is notified by the phone user of multiplexing described target resource to be selected in the second community in described the second base station, so that the interference of the phone user that described terminal is calculated multiplexing described target resource to be selected in described the second community to described the second terminal, when described interference surpasses setting threshold, abandon described target resource to be selected, and by described the second base station, to notify described the first base station be that described terminal communication user is to selecting next to organize resource to be selected as target resource to be selected.

The 4th kind of possible execution mode or the 5th kind of possible execution mode based on first aspect, in the 7th kind of possible execution mode, after choosing described target resource to be selected, if select described target resource to be selected, be that described the second base station is the resource to be selected of described the second terminal distribution:

Described the second base station is informed by the phone user of multiplexing described target resource to be selected in described target resource to be selected and described the first community in described the first base station, so that described the second terminal is informed by the phone user of multiplexing described target resource to be selected in the first community in described the second base station, so that the interference of the phone user that described the second terminal is calculated multiplexing described target resource to be selected in described the first community to described the second terminal, when described interference surpasses setting threshold, abandon described target resource to be selected, and by described the second base station, to notify described the first base station be that described terminal communication user is to selecting next to organize resource to be selected as target resource to be selected.

Second aspect, the embodiment of the present invention provides a kind of D2D communication means, and described method comprises:

After whole endpoint registrations of the second base station in the second community, receive the identify label of first terminal and the identify label of described the second terminal that the first base station sends, the identify label of the identify label of described first terminal and described the second terminal is carried in the D2D communication connection request that first terminal sends to described the first base station, the described D2D communication connection request of setting up is communicated by letter for setting up D2D with the second terminal, described the first base station is positioned at described the first community, described first terminal is in described the first community, described the second terminal is in the second community, described the second community is the adjacent area of described the first community, described first terminal is the transmit leg of described D2D communication, described the second terminal is the recipient of described D2D communication, the identify label of the identify label that described D2D communication connection comprises described the second terminal in setting up and asking and the second base station of described the second community,

Described the second terminal is informed by the identify label of described first terminal in described the second base station, and informs that described the second terminal receives the detectable signal that described first terminal sends;

Described the second base station obtain described the second terminal according to the link quality information of described detectable signal feedback so that described the first base station judges according to described link quality information whether described first terminal and described the second terminal can carry out D2D and communicate by letter with described the second base station;

In judgement described first terminal and the second terminal, can carry out D2D while communicating by letter, described the second base station is that described the second terminal distribution M organizes the second resource to be selected, and described M is organized to the second resource to be selected and inform described the first base station, so that the second resource to be selected and N are organized by described M in described the first base station, organize the M+N that the first resource to be selected forms and organize resource to be selected, interference according to the phone user of multiplexing resource to be selected in Liang Ge community to receiving side terminal, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, making described first terminal in described target resource to be selected, carry out D2D with described the second terminal communicates by letter.

Based on second aspect, in the possible execution mode of the first, in described the second base station, be that described the second terminal distribution M organizes the second resource to be selected, and described M organized to the second resource to be selected and inform described the first base station, afterwards, also comprise:

Described the second base station receives the described target resource to be selected that described the first base station sends;

By the phone user of multiplexing described target resource to be selected in the second community, notify described the second terminal, so that the interference of the phone user that described terminal is calculated multiplexing described target resource to be selected in described the second community to described the second terminal,

In described interference, surpass setting threshold, when described the second terminal is abandoned described target resource to be selected, notifying described the first base station is that described terminal communication user is to selecting next to organize resource to be selected as target resource to be selected.

Based on second aspect, in the possible execution mode of the second, in described the second base station, be that described the second terminal distribution M organizes the second resource to be selected, and described M organized to the second resource to be selected and inform described the first base station, afterwards, also comprise:

Receive the phone user of multiplexing described target resource to be selected in described target resource to be selected that described the first base station sends and described the first community;

The phone user of multiplexing described target resource to be selected in described target resource to be selected and described the first community is informed to described the second terminal, so that the interference of the phone user that described terminal is calculated multiplexing described target resource to be selected in described the first community to described the second terminal;

The third aspect, the embodiment of the present invention provides a kind of base station, and described base station comprises:

Receiving element, for after whole endpoint registrations of the first base station in the first community, receive the D2D communication connection foundation request that first terminal sends, the described D2D communication connection request of setting up is communicated by letter for setting up D2D with the second terminal, described the first community is the community at described the first place, base station, described first terminal is in described the first community, described the second terminal is in the second community, described the second community is the adjacent area of described the first community, described first terminal is the transmit leg of described D2D communication, described the second terminal is the recipient of described D2D communication, the identify label of the identify label that described D2D communication connection comprises described the second terminal in setting up and asking and the second base station of described the second community, described first terminal and the second terminal form a terminal communication user couple,

Transmitting element, for described the first base station, to described the second base station, send the identify label of described first terminal and the identify label of described the second terminal, so that described the second terminal is informed by the identify label of described first terminal in described the second base station, and inform that described the second terminal receives the detectable signal that described first terminal sends;

Acquiring unit, for obtaining described the second terminal according to the link quality information of described detectable signal feedback by described the second base station;

Allocation units, be used in described the first base station based on described link quality information, judge that described first terminal and the second terminal can carry out D2D while communicating by letter, described the first base station is that described first terminal distributes N to organize the first resource to be selected, and organize the second resource to be selected with described the second base station exchange M, described M is organized to the second resource to be selected and described N and organize the first resource to be selected and form M+N and organize resource to be selected, it is that described the second base station is described the second terminal distribution that the M of institute organizes the second resource to be selected;

Selected cell, for the interference to receiving side terminal according to the phone user of the multiplexing resource to be selected in Liang Ge community of described the first base station, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected.

Based on the third aspect, in the possible execution mode of the first, described base station also comprises: sequencing unit is that described M+N organizes resource to be selected and sorts for described the first base station according to performance index.

The possible execution mode of the first based on the third aspect, in the possible execution mode of the second, described sequencing unit specifically for:

The possible execution mode of the first based on the third aspect, in the third possible execution mode, described sequencing unit specifically for:

Based on the third aspect or possible execution mode or possible execution mode or the third the possible execution mode of the second of the first, in the 4th kind of possible execution mode, described selected cell specifically for:

Based on the third aspect or possible execution mode or possible execution mode or the third the possible execution mode of the second of the first, in the 5th kind of possible execution mode, described selected cell specifically for:

The 4th kind of possible execution mode or the 5th kind of possible execution mode based on the third aspect, in the 6th kind of possible execution mode, after choosing described target resource to be selected, if selecting described target resource to be selected is that described the first base station is the resource to be selected that described first terminal distributes, described transmitting element also for:

Described target resource to be selected is informed to described the second base station, so that described the second terminal is notified by the phone user of multiplexing described target resource to be selected in the second community in described the second base station, so that the interference of the phone user that described terminal is calculated multiplexing described target resource to be selected in described the second community to described the second terminal, when described interference surpasses setting threshold, abandon described target resource to be selected, and by described the second base station, to notify described the first base station be that described terminal communication user is to selecting next to organize resource to be selected as target resource to be selected.

The 4th kind of possible execution mode or the 5th kind of possible execution mode based on the third aspect, in the 7th kind of possible execution mode, after choosing described target resource to be selected, if selecting described target resource to be selected is that described the second base station is the resource to be selected of described the second terminal distribution, described transmitting element also for:

The phone user of multiplexing described target resource to be selected in described target resource to be selected and described the first community is informed to described the second base station, so that described the second base station is by the first community, so that the interference of the phone user that described terminal is calculated multiplexing described target resource to be selected in described the first community to described the second terminal, when described interference surpasses setting threshold, abandon described target resource to be selected, and by described the second base station, to notify described the first base station be that described terminal communication user is to selecting next to organize resource to be selected as target resource to be selected.

Fourth aspect, the embodiment of the present invention provides a kind of base station, and described base station comprises:

Receiving element, for after whole endpoint registrations of the second base station in the second community, receive the identify label of first terminal and the identify label of described the second terminal that the first base station sends, the identify label of the identify label of described first terminal and described the second terminal is carried in the D2D communication connection request that first terminal sends to described the first base station, the described D2D communication connection request of setting up is communicated by letter for setting up D2D with the second terminal, described the first base station is positioned at described the first community, described first terminal is in described the first community, described the second terminal is in the second community, described the second community is the adjacent area of described the first community, described first terminal is the transmit leg of described D2D communication, described the second terminal is the recipient of described D2D communication, the identify label of the identify label that described D2D communication connection comprises described the second terminal in setting up and asking and the second base station of described the second community,

Transmitting element, informs described the second terminal for described the second base station by the identify label of described first terminal, and informs that described the second terminal receives the detectable signal that described first terminal sends;

Acquiring unit, for described the second base station, obtain described the second terminal according to the link quality information of described detectable signal feedback, so that described the first base station judges according to described link quality information whether described first terminal and described the second terminal can carry out D2D and communicate by letter with described the second base station;

Allocation units, for carrying out D2D in judgement described first terminal and the second terminal while communicating by letter, for described the second terminal distribution M organizes the second resource to be selected, and described M is organized to the second resource to be selected and inform described the first base station, so that the second resource to be selected and N are organized by described M in described the first base station, organize the M+N that the first resource to be selected forms and organize resource to be selected, interference according to the phone user of multiplexing resource to be selected in Liang Ge community to receiving side terminal, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected.

Based on fourth aspect, in the possible execution mode of the first, in described the second base station, be that described the second terminal distribution M organizes the second resource to be selected, and described M organized to the second resource to be selected and inform described the first base station, afterwards,

Described receiving element, the described target resource to be selected also sending for receiving described the first base station;

Described transmitting element also for: by the phone user of the second multiplexing described target in community resource to be selected, notify described the second terminal, so that the interference of the phone user that described terminal is calculated multiplexing described target resource to be selected in described the second community to described the second terminal

Based on fourth aspect, in the possible execution mode of the second, in described the second base station, be that described the second terminal distribution M organizes the second resource to be selected, and described M organized to the second resource to be selected and inform described the first base station, afterwards,

Described receiving element also for: receive described target resource to be selected that described the first base station sends and the phone user of described the first multiplexing described target in community resource to be selected;

Described transmitting element also for:

The D2D communication means providing by the embodiment of the present invention, the first base station is that described first terminal distributes N to organize the first resource to be selected, and organize the second resource to be selected with described the second base station exchange M, afterwards, described the first base station is that described M+N organizes resource to be selected and sorts according to performance index, guaranteed that terminal communication user is to there being the more alternative communication resource, and the resource of carrying out D2D communication can also be selected according to the phone user of multiplexing resource to be selected in Liang Ge community in the first base station to the interference of receiving side terminal, can reduce to greatest extent cochannel and disturb the interference causing, improve the performance of D2D communication.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the application architecture figure of the D2D communication means that provides of the embodiment of the present invention;

Fig. 2 is the flow chart of a kind of embodiment of D2D communication means of providing of the embodiment of the present invention;

Fig. 3 is the flow chart of the another kind of embodiment of the D2D communication means that provides of the embodiment of the present invention;

Fig. 4 is the interaction mode figure of the another kind of embodiment of the D2D communication means that provides of the embodiment of the present invention;

Fig. 5 is the structure chart of a kind of embodiment of the base station that provides of the embodiment of the present invention;

Fig. 6 is the structure chart of the another kind of embodiment of the base station that provides of the embodiment of the present invention;

Fig. 7 is the structure chart of a kind of embodiment of the base station that provides of the embodiment of the present invention;

Fig. 8 is the structure chart of the another kind of embodiment of the base station that provides of the embodiment of the present invention.

Embodiment

Below by drawings and Examples, technical scheme of the present invention is described in further detail.

Fig. 1 is the application architecture figure of the D2D communication means that provides of the embodiment of the present invention, in described framework, comprises the community that two radiuses are R, and the community at the first base station eNB 1 place is the first community Cell1, and the community at the second base station eNB 2 places is the second community Cell2.Two base stations are positioned at the center of community, the all phone users that are positioned at this community are evenly distributed on community, terminal D _ TxUE and D_RxUE belong to different communities, but distance is very near, the required distance that meets D2D communication, being discussed below middle D2D is D_TxUE to transmit leg, recipient is D_RxUE, the cell base station at D_TxUE place is eNB1, the cell base station at D_RxUE place is eNB2, due to what consider, be that cell edge two users carry out D2D communication, far and D2D user emission power is very little from base station, so D2D user can not consider the interference of base station, and phone user is more important comparatively speaking to the interference of D_RxUE, here disturb and both comprised that this cell cellular user's interference comprised the interference of neighbor cell phone user to it simultaneously.

Carry out across community D2D communication time, all users in each community carry out community registration and obtain community ID and power control information, between neighbor base stations, exchange message obtains the positional information of D2D.

As for the right discovery procedure of terminal communication user and the user in community, carry out the process that base station login obtains community ID and be prior art, seldom repeat.In the process of community registration, cell base station can get the data such as the positional information, identification information of each terminal in community, and the base station of this information and adjacent area can be exchanged.

Framework based on above-mentioned, the embodiment of the present invention provides a kind of D2D communication means, and Fig. 2 is the flow chart of a kind of embodiment of the D2D communication means that provides of the embodiment of the present invention, in this embodiment, executive agent is the first base station eNB 1 in Cell1, and as seen from Figure 2, described method comprises:

201, after the whole endpoint registrations in the first community, receive the D2D communication connection foundation request that first terminal sends;

Wherein, the described D2D communication connection request of setting up is communicated by letter for setting up D2D with the second terminal, described the first community Cell1 is the community at described the first base station eNB 1 place, described first terminal D_TxUE is in described the first community, described the second terminal D _ RxUE is in the second community Cell2, described the second community is the adjacent area of described the first community, described first terminal D_TxUE is the transmit leg of described D2D communication, described the second terminal D _ RxUE is the recipient of described D2D communication, the identify label of the identify label that described D2D communication connection comprises described the second terminal D _ RxUE in setting up and asking and the second base station eNB 2 of described the second community Cell2, described first terminal and the second terminal form a terminal communication user couple, referred to as D2D couple,

Each user, in the process of community, place registration, the base station of community gets the positional information of terminal, and can carry out information exchange with the base station of adjacent area, obtains the positional information of the whole terminals in Liang Ge community.

For example all terminal is carried out Cell searching, Cell searching is the synchronizing information that user starts shooting to obtain community, these information comprise down-going synchronous information, community ID obtains and the demodulating information of broadcast channel, user selects a suitable community to register, and after the registration of community, user could obtain the more detailed information in this community and neighbor cell

Suppose that first terminal D_TxUE is in the discovery procedure of D2D communication, transmit leg can be the ID that has known the recipient who wants to carry out D2D communication, only need to determine whether transmit leg and recipient's range information meets the required distance that D2D communicates by letter by discovery procedure; Or D2D is by terminal discovery signals, and discovery can be carried out the receiving terminal of D2D communication, and by broadcast service community ID, transmit leg can know recipient is in which community.The discovery procedure of D2D communication, is prior art, therefore seldom repeats.

202, described the first base station sends the identify label of described first terminal and the identify label of described the second terminal to described the second base station, so that described the second terminal is informed by the identify label of described first terminal in described the second base station, and inform that described the second terminal receives the detectable signal that described first terminal sends;

Concrete, eNB1, according to D2D communication request, knows that D_TxUE wants to carry out the ID of target D_RxUE and the ID of the base station under D_RxUE, the namely id information of eNB2 of D2D communication.ENB1 sends to eNB2 by the ID of the ID of D_TxUE and D_RxUE.Afterwards, eNB2 sends to D_RxUE by the ID of D_TxUE, and notice D_RxUE receives the detectable signal that D_TxUE sends.

Afterwards, D_TxUE is at Dedicated Traffic Channel (Dedicated Traffic Channel, DTCH) to D_RxUE, send detectable signal, D_RxUE obtains link quality information according to detectable signal, in link quality information, include Signal to Interference plus Noise Ratio (signal to interference plus noise ratio, SINR).The link quality information i.e. interference of a terminal to another/available signal power size.In D2D communication, the both sides of direct communication need to be known the Signal to Interference plus Noise Ratio to square signal arrival oneself, while calculating Signal to Interference plus Noise Ratio, need to use the watt level of the useful signal receiving, the interference power size that also has other phone user to bring, the calculating of these " extraneous signal power " all need to be drawn by detectable signal.

203, by described the second base station, obtain described the second terminal according to the link quality information of described detectable signal feedback;

Concrete, after D_RxUE gets link quality information, the eNB2 of first from the community Cell2 to its place reports, and reports afterwards again, thereby make the first base station eNB 1 get described link quality information by eNB2 to eNB1.According to this link quality information, two base stations determine that can two terminals carry out D2D communication, if two terminals are determined in two base stations, meet the condition of D2D communication, perform step 204.

204, described the first base station is that described first terminal distributes N to organize the first resource to be selected, and organize the second resource to be selected with described the second base station exchange M, described M is organized to the second resource to be selected and described N and organize the first resource to be selected and form M+N and organize resource to be selected, it is that described the second base station is described the second terminal distribution that described M organizes the second resource to be selected;

Concrete, each base station organizes resource to be selected to the D2D user assignment N in its compass of competency, in this assigning process, suppose D2D user to all in the community of oneself, according to D2D multiplexed resource selection algorithm in community, carry out resource distribution.According to D2D multiplexed resource selection algorithm in community, be prior art, therefore seldom repeat, for example described distribution method can be:

First set D2D user's outage probability threshold value, then calculate the multiplexing phone user of D2D user outage probability afterwards, by outage probability, be greater than this restrictive condition of outage probability threshold value, can obtain a minimum distance limit L _minwhen the distance between phone user and D2D user is more than or equal to this minimum distance limit, D2D user just can multiplexing this phone user resource, finally by the multiplexing resource that meets several phone users of minimum distance limit, corresponding total throughput when calculating D2D user and phone user and communicating by letter in these several groups of resources, selects wherein several groups of best resources (according to the size of throughput and Signal to Interference plus Noise Ratio) to carry out multiplexing.

After D2D user assignment resource good to be selected in the distribution method by above-mentioned is community, for example described eNB1 is that D_TxUE distributes N to organize the first resource to be selected, and eNB2 is that D_RxUE distributes M to organize the second resource to be selected, and M can equal N.Afterwards, eNB1 and eNB2 exchange resource to be selected, and afterwards, eNB1 and eNB2 organize the second resource to be selected and described N by described M and organize the first resource to be selected and form M+N and organize resource to be selected, and eNB1 is sorting with together with D2D multiplexed resource Groups List under eNB2 under eNB1.

205, described the first base station is the interference to receiving side terminal according to the phone user of multiplexing resource to be selected in Liang Ge community, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected.

Particularly, M+N is being organized in resource to be selected, if described M organizes the second resource to be selected and described N, organizing in resource to be selected and there is overlapping resource, for described terminal communication user is to selecting described overlapping resource as target resource to be selected.If there is no overlapping resource, the M+N of eNB1 after described sequence organizes in resource to be selected, according to sequence sequencing, is that described D2D is to choosing one group of money to be selected as target resource to be selected.

Preferably, in order to improve the efficiency of selection of target resource to be selected, after 204, described the first base station can be that described M+N organizes resource to be selected and sorts according to performance index;

Concrete, in community, the selection of shared resource is carried out according to certain performance index C, C can be multiplexing same resource to be selected phone user and the right total throughput of D2D, D2D is to independent throughput, interference value to the phone user of shared resource, or transmitting power minimum etc., eNB2 is also sending every group of C value that resource is corresponding when eNB1 sends resource Groups List, and eNB1 organizes resource to be selected according to C value to M+N and sorts.

For example, according to multiplexing described M+N organize the phone user of resource to be selected and the right throughput of described D2D communication user and/or,

That is, multiplexing each organize resource to be selected after phone user D2D user's interference is less than to its interference threshold (D2D user SINR is greater than threshold value SINR), and after multiplexed resource, D2D user adds that the phone user's that is re-used throughput is maximum.

Or, according to multiplexing described M+N organize the phone user of resource to be selected and total transmitting power of described D2D communication user and/or,

; according to multiplexing each phone user and total transmitting power minimum of D2D user of organizing resource to be selected, select; i.e. all interference are all considered and interference each other is all less than interference threshold separately, then select to make the resource group of the two total transmitting power minimum.

Elect so in order several groups as alternative, alternative such as select three groups by throughput rank 1.

, in step 205, the M+N after sequence organizes resource to be selected, organizes in resource to be selected and has overlapping resource, for described terminal communication user is to selecting described overlapping resource as target resource to be selected if described M organizes the second resource to be selected and described N.If there is no overlapping resource, the M+N of eNB1 after described sequence organizes in resource to be selected, according to sequence sequencing, is that described D2D is to choosing one group of money to be selected as target resource to be selected.

After choosing described target resource to be selected, if select described target resource to be selected, be that described the first base station is the resource to be selected that described first terminal distributes:

Described the first base station is by described target resource to be selected, so that described the second terminal is notified by the phone user of multiplexing described target resource to be selected in the second community in described the second base station, so that the interference of the phone user that described terminal is calculated multiplexing described target resource to be selected in described the second community to described the second terminal, when described interference surpasses setting threshold, abandon described target resource to be selected, and by described the second base station, to notify described the first base station be that described terminal communication user is to selecting next to organize resource to be selected as target resource to be selected.

Framework in conjunction with Fig. 1, first by eNB1, the current target of choosing resource to be selected is sent to eNB2, then eNB2 informs that D_RxUE is used the phone user's of this resource relevant information in Cell2, for example positional information or transmitting power or ID, D_RxUE calculates can be according to the phone user of multiplexing described target resource to be selected and the link quality information between D_RxUE in positional information rough calculation Cell2, and calculate according to link quality information the interference that the phone user who uses same resource in this community gives him, interference calculation is disturbed the same with calculating phone user in same community to D2D user, if disturb the interference threshold that is greater than D2D user, give up this group resource, by eNB1, according to the next available resources in sorted lists, to D2D user, distributed, until there is the resource group satisfying condition.

In addition, after the phone user of D_RxUE multiplexing target resource to be selected in learning Cell2, also can select to send detectable signal to phone user, by phone user's feedback link quality information, then calculate interference value according to link quality information.

The mode that D_RxUE carries out interference calculation is as follows:

| h ₂₁| ²p _c21d ^-αwhat represent is that phone user is disturbed in the inside, second community of same cell cellular user CeUE21() D_RxUE is disturbed; (if the resource that first base station is divided will be calculated this, disturbing)

| h ₁₁| ²p _c11l ^-αrepresent that the interference between Shi Kua community is the interference phone user of first the inside, community of CeUE11() interference to D_RxUE; (if the resource that second base station divided will be calculated this, disturbing)

In computational process, the information needing comprises:

The transmitting power P of CeUE11 and CeUE21 _c11and P _c21, the distance l between CeUE11 and D_RxUE and channel information h ₁₁, the distance d between CeUE21 and D_RxUE and channel information h ₂₁, | h ₂₁| ²p _c21d ^-αwith | h ₁₁| ²p _c11l ^-αcan go out by transmitting power with apart from rough calculation, also can the detectable signal of interference source transmitting be surveyed and be drawn by D_RxUE.

If selecting described target resource to be selected is that described the second base station is the resource to be selected of described the second terminal distribution:

Described the second base station is informed by the phone user of multiplexing described target resource to be selected in described target resource to be selected and described the first community in described the first base station, so that described the second base station is by the first community, so that the interference of the phone user that described terminal is calculated multiplexing described target resource to be selected in described the first community to described the second terminal, when described interference surpasses setting threshold, abandon described target resource to be selected, and by described the second base station, to notify described the first base station be that described terminal communication user is to selecting next to organize resource to be selected as target resource to be selected.

Wherein, eNB1 finds the phone user of the target resource to be selected that in CELL1, use is chosen, these users' relevant information is informed to eNB2, eNB2 sends to D_RxUE again, then D_RxUE calculates the interference of D_TxUE affiliated subdistrict phone user to it, if disturb the interference threshold that is greater than D2D user, give up this group resource, by eNB1, according to the next available resources in sorted lists, to D2D user, distributed, until there is the resource group satisfying condition.

Pass through above-described embodiment, after eNB1 receives the D2D communication connection foundation request of first terminal transmission, to described eNB2, send the identify label of described D_TxUE and the identify label of described D_RxUE, and obtain described D_RxUE according to the link quality information of described detectable signal feedback by described eNB2, for distributing N, described D_TxUE organizes the first resource to be selected afterwards, and organize the second resource to be selected with described eNB2 exchange M, afterwards, described eNB1 is that described M+N organizes resource to be selected and sorts according to performance index, guaranteed that D2D is to there being the more alternative communication resource, and according to the phone user of multiplexing resource to be selected in adjacent area, the interference of receiving side terminal is selected the resource of carrying out D2D communication, can reduce to greatest extent cochannel and disturb the interference causing, improve the performance of D2D communication.

As shown in Figure 3, the embodiment of the present invention also provides a kind of D2D communication means, and in this embodiment, executive agent is the second base station eNB 2 in Cell2, and as seen from Figure 3, described method comprises:

301, after whole endpoint registrations of the second base station in the second community, receive the identify label of first terminal and the identify label of described the second terminal that the first base station sends, the identify label of the identify label of described first terminal and described the second terminal is carried in the D2D communication connection request that first terminal sends to described the first base station, the described D2D communication connection request of setting up is communicated by letter for setting up D2D with the second terminal, described the first base station is positioned at described the first community, described first terminal is in described the first community, described the second terminal is in the second community, described the second community is the adjacent area of described the first community, described first terminal is the transmit leg of described D2D communication, described the second terminal is the recipient of described D2D communication, the identify label of the identify label that described D2D communication connection comprises described the second terminal in setting up and asking and the second base station of described the second community,

302, described the second terminal is informed by the identify label of described first terminal in described the second base station, and informs that described the second terminal receives the detectable signal that described first terminal sends;

303, described the second base station obtains described the second terminal according to the link quality information of described detectable signal feedback, so that described the first base station judges according to described link quality information whether described first terminal and described the second terminal can carry out D2D and communicate by letter with described the second base station;

304, in judgement described first terminal and the second terminal, can carry out D2D while communicating by letter, described the second base station is that described the second terminal distribution M organizes the second resource to be selected, and described M is organized to the second resource to be selected and inform described the first base station, so that the second resource to be selected and N are organized by described M in described the first base station, organize the M+N that the first resource to be selected forms and organize resource to be selected, interference according to the phone user of multiplexing resource to be selected in Liang Ge community to receiving side terminal, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected.

Particularly, the second base station is described the second terminal distribution M while organizing resource to be selected, is also to adopt D2D multiplexed resource selection algorithm in community, seldom repeats.

Particularly, two base station exchange the D2D that respectively does for oneself to the resource to be selected of distributing after, if the target that the first base station is chosen resource to be selected is the first base station, be the resource to be selected that first terminal distributes:

If the target that the first base station is chosen resource to be selected is the first base station, be the resource to be selected that first terminal distributes:

In described the second base station, be that described the second terminal distribution M organizes the second resource to be selected, and described M organized to the second resource to be selected and inform described the first base station, afterwards, also comprise:

Concrete execution mode, can, with reference to the embodiment shown in figure 2, seldom repeat at this.

It should be noted that, in aforesaid two embodiment, all by the first base station, to be carried out the distribution of resource sequence to be selected and target resource to be selected, in fact, also can be by the base station of the community at recipient place, namely the second base station is organized resource to be selected to M+N and is sorted, and is calculated afterwards the interference value of each resource to be selected by transmit leg, carries out redistributing of target resource to be selected afterwards by the second base station.

As shown in Figure 4, the embodiment of the present invention provides a kind of D2D communication means, and Fig. 4 is the interaction mode figure of the method, and as seen from Figure 4, the D2D communication means that this embodiment provides comprises following step:

Being discussed below middle D2D is D_TxUE to transmit leg, recipient is D_RxUE, the cell base station at UE1 place is eNB1, the cell base station at D_RxUE place is eNB2, due to what consider, be that cell edge two users carry out D2D communication, far and D2D user emission power is very little from base station, so D2D user can not consider the interference of base station.

All users carry out community registration and obtain community ID, and between neighbor base stations, exchange message obtains D2D user's positional information, to judge that whether resource that D_TxUE is used is eligible below.

D_TxUE sends D2D communication connection to eNB1 and sets up request and serving BS ID under the ID of targeted customer D_RxUE and D_RxUE is sent to eNB1, and eNB1 judgement D_RxUE is Zhe community,

Due to embodiment of the present invention concern is the situation of recipient Bu Zhe community, the ID of target terminal D_RxUE and D_TxUE is sent to the base station under D_RxUE is eNB2 to eNB1, and eNB2 also informs D_RxUE the ID of D_TxUE and orders D_RxUE to receive the detectable signal of the UE of corresponding ID.

D_TxUE sends detectable signal to D_RxUE, and D_RxUE informs eNB2 after obtaining link quality information, and eNB2 also informs eNB1, and eNB1 and eNB2, according to the link quality information between D_TxUE and D_RxUE, judge whether two terminals meet the condition of D2D communication.

When meeting the condition of D2D communication, each base station organizes resource to be selected to the D2D user assignment N in its compass of competency, in this assigning process, suppose D2D user to all in the community of oneself, according to D2D multiplexed resource selection algorithm in community, carry out resource distribution.After D2D user assignment resource good to be selected in the distribution method by above-mentioned is community, for example described eNB1 is that D_TxUE distributes N to organize the first resource to be selected, and eNB2 is that D_RxUE distributes M to organize the second resource to be selected, and M can equal N.Afterwards, eNB1 and eNB2 exchange resource to be selected, and afterwards, eNB1 and eNB2 organize the second resource to be selected and described N by described M and organize the first resource to be selected and form M+N and organize resource to be selected, and eNB1 is sorting with together with D2D multiplexed resource Groups List under eNB2 under eNB1.

In community, the selection of multiplexed resource is carried out according to certain performance index C, C can be multiplexing phone user+D2D throughput, D2D user throughput, interference value to the phone user of multiplexed resource, or transmitting power minimum etc., eNB2 is also sending every group of C value that resource is corresponding when eNB1 sends resource Groups List, and eNB1 sorts according to C value.Such as selecting according to throughput, after multiplexed resource, phone user is less than its interference threshold (D2D user SINR is greater than threshold value SINR) to D2D user's interference, and after multiplexed resource, D2D user adds that the phone user's that is re-used throughput is maximum; Also or according to the phone user of multiplexed resource and the total transmitting power minimum of D2D user select, i.e. all interference are all considered and interference each other is all less than interference threshold separately, then select to make the resource group of the two total transmitting power minimum.Elect so in order several groups as alternative, alternative such as select three groups by throughput rank 1.

Afterwards, referring to aforesaid embodiment, if have overlapping resource to be selected in the resource group that two base stations divide to the D2D user in its compass of competency, D2D user just organizes this resource to be selected as target resource to be selected, if D2D user uses target resource to be selected can't meet resource group that its QOS requires multiplexed resource number deficiency namely or two base stations to divide separately, do not have overlappingly, carry out step below:

If target resource to be selected is eNB1, be the resource that D_TxUE distributes, need the interference of considering that the phone user D_RxUE in Cell2 receives, for example interference of CeUE21 to D_RxUE in Fig. 1.First by eNB1, the target resource information of current use is sent to eNB2, then eNB2 informs that D_RxUE is used the phone user's of this resource relevant information, for example positional information or transmitting power or ID, D_RxUE calculates the interference that the phone user who uses same resource in this community gives him, interference calculation is disturbed the same with calculating phone user in same community to D2D user, if disturb the interference threshold that is greater than D2D user, give up this group resource, by eNB1, according to the next available resources in sorted lists, to D2D user, distributed, until there is the resource group satisfying condition.

In addition, the interference of the phone user that also can calculate the multiplexing target resource to be selected of choosing according to data such as phone user's positional informations by the first base station eNB 1 or eNB2 to D_RxUE, and select finally to distribute to according to interference value the running time-frequency resource that D2D is right, computational methods are also similar with the embodiment shown in Fig. 2, seldom repeat.

If target resource to be selected is eNB2, it is the resource that D_RxUE distributes, need to consider to use the interference of the phone user of target resource to be selected to D_RxUE in the community at eNB1 place, the for example interference of CeUE11 to D_RxUE in Fig. 1, consider that two interference users belong to different districts, calculating to disturb needs according to carrying out across community two users' interference calculation flow process.Calculating the process of disturbing can be undertaken by the first base station, also can be undertaken by D_RxUE, if undertaken by D_RxUE, eNB1 finds the phone user who uses this group target resource to be selected in this community, these users' relevant information is informed to eNB2, eNB2 sends to D_RxUE again, then D_RxUE calculates the interference of D_TxUE affiliated subdistrict phone user to it, if disturb the interference threshold that is greater than D2D user, give up this group resource, by eNB1, according to the next available resources in sorted lists, to D2D user, distributed, until there is the resource group satisfying condition, eNB1 informs D_TxUE by the resource of selection afterwards, and inform D_RxUE by eNB2

The D2D communication means providing by the above embodiments, after the first base station receives the D2D communication connection foundation request of first terminal transmission, to described the second base station, send the identify label of described first terminal and the identify label of described the second terminal, and obtain described the second terminal according to the link quality information of described detectable signal feedback by described the second base station, for distributing N, described first terminal organizes the first resource to be selected afterwards, and organize the second resource to be selected with described the second base station exchange M, afterwards, described the first base station is that described M+N organizes resource to be selected and sorts according to performance index, guaranteed that terminal communication user is to there being the more alternative communication resource, and according to the phone user of multiplexing resource to be selected in adjacent area, the interference of receiving side terminal is selected the resource of carrying out D2D communication, can reduce to greatest extent cochannel and disturb the interference causing, improve the performance of D2D communication.

Accordingly as shown in Figure 5, the embodiment of the present invention provides a kind of base station, and described base station can be the base station in the communication systems such as LTE, 3GPP, and described base station 500 comprises:

Receiving element 501, for after whole endpoint registrations of the first base station in the first community, receive the D2D communication connection foundation request that first terminal sends, the described D2D communication connection request of setting up is communicated by letter for setting up D2D with the second terminal, described the first community is the community at described the first place, base station, described first terminal is in described the first community, described the second terminal is in the second community, described the second community is the adjacent area of described the first community, described first terminal is the transmit leg of described D2D communication, described the second terminal is the recipient of described D2D communication, the identify label of the identify label that described D2D communication connection comprises described the second terminal in setting up and asking and the second base station of described the second community, described first terminal and the second terminal form a terminal communication user couple,

Transmitting element 502, for described the first base station, to described the second base station, send the identify label of described first terminal and the identify label of described the second terminal, so that described the second terminal is informed by the identify label of described first terminal in described the second base station, and inform that described the second terminal receives the detectable signal that described first terminal sends;

Acquiring unit 503, for obtaining described the second terminal according to the link quality information of described detectable signal feedback by described the second base station;

Allocation units 504, be used in described the first base station based on described link quality information, judge that described first terminal and the second terminal can carry out D2D while communicating by letter, for distributing N, described first terminal organizes the first resource to be selected, and organize the second resource to be selected with described the second base station exchange M, described M is organized to the second resource to be selected and described N and organize the first resource to be selected and form M+N and organize resource to be selected, it is that described the second base station is described the second terminal distribution that the M of institute organizes the second resource to be selected;

Selected cell 505, for the interference to receiving side terminal according to the phone user of the multiplexing resource to be selected in Liang Ge community of described the first base station, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected.

Preferably, described base station 500 also comprises:

Sequencing unit is that described M+N organizes resource to be selected and sorts for described the first base station according to performance index;

In a kind of possible execution mode, described sequencing unit specifically for:

Or described sequence single specifically for:

Preferably, described selected cell 505 specifically for:

If described M organizes the second resource to be selected and described N and organizes and there is no overlapping resource in resource to be selected, described selected cell 505 specifically for:

Preferably, after choosing described target resource to be selected, if select described target resource to be selected, be that described the first base station is the resource to be selected that described first terminal distributes, described transmitting element also for:

If selecting described target resource to be selected is that described the second base station is the resource to be selected of described the second terminal distribution, described transmitting element also for:

The phone user of multiplexing described target resource to be selected in described target resource to be selected and described the first community is informed to described the second base station, so that described the second terminal is informed by the phone user of multiplexing described target resource to be selected in the first community in described the second base station, so that the interference of the phone user that described the second terminal is calculated multiplexing described target resource to be selected in described the first community to described the second terminal, when described interference surpasses setting threshold, abandon described target resource to be selected, and by described the second base station, to notify described the first base station be that described terminal communication user is to selecting next to organize resource to be selected as target resource to be selected.

The D2D communication means providing by the embodiment of the present invention, after the first base station receives the D2D communication connection foundation request of first terminal transmission, to described the second base station, send the identify label of described first terminal and the identify label of described the second terminal, and obtain described the second terminal according to the link quality information of described detectable signal feedback by described the second base station, for distributing N, described first terminal organizes the first resource to be selected afterwards, and organize the second resource to be selected with described the second base station exchange M, afterwards, described the first base station is that described M+N organizes resource to be selected and sorts according to performance index, guaranteed that terminal communication user is to there being the more alternative communication resource, and according to the phone user of multiplexing resource to be selected in adjacent area, the interference of receiving side terminal is selected the resource of carrying out D2D communication, can reduce to greatest extent cochannel and disturb the interference causing, improve the performance of D2D communication.

Accordingly, the embodiment of the present invention also provides a kind of base station, and as shown in Figure 6, described base station can be the base station in the communication systems such as LTE, 3GPP, and described base station 600 comprises:

Receiving element 601, for after whole endpoint registrations of the second base station in the second community, receive the identify label of first terminal and the identify label of described the second terminal that the first base station sends, the identify label of the identify label of described first terminal and described the second terminal is carried in the D2D communication connection request that first terminal sends to described the first base station, the described D2D communication connection request of setting up is communicated by letter for setting up D2D with the second terminal, described the first base station is positioned at described the first community, described first terminal is in described the first community, described the second terminal is in the second community, described the second community is the adjacent area of described the first community, described first terminal is the transmit leg of described D2D communication, described the second terminal is the recipient of described D2D communication, the identify label of the identify label that described D2D communication connection comprises described the second terminal in setting up and asking and the second base station of described the second community,

Transmitting element 602, informs described the second terminal for described the second base station by the identify label of described first terminal, and informs that described the second terminal receives the detectable signal that described first terminal sends;

Acquiring unit 603, for described the second base station, obtain described the second terminal according to the link quality information of described detectable signal feedback, so that described the first base station judges according to described link quality information whether described first terminal and described the second terminal can carry out D2D and communicate by letter with described the second base station;

Allocation units 604, for carrying out D2D in judgement described first terminal and the second terminal while communicating by letter, for described the second terminal distribution M organizes the second resource to be selected, and described M is organized to the second resource to be selected and inform described the first base station, so that the second resource to be selected and N are organized by described M in described the first base station, organize the M+N that the first resource to be selected forms and organize resource to be selected, interference according to the phone user of multiplexing resource to be selected in Liang Ge community to receiving side terminal, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected.

Preferably, if the target that the first base station is chosen resource to be selected is the first base station, be the resource to be selected that first terminal distributes, in described the second base station, be that described the second terminal distribution M organizes the second resource to be selected, and described M organized to the second resource to be selected and inform described the first base station, afterwards

Described receiving element 601, the described target resource to be selected also sending for receiving described the first base station;

Described transmitting element 602 also for: by the phone user of the second multiplexing described target in community resource to be selected, notify described the second terminal, so that the interference of the phone user that described terminal is calculated multiplexing described target resource to be selected in described the second community to described the second terminal

Preferably, if the target that the first base station is chosen resource to be selected is the second base station, be the resource to be selected of the second terminal distribution, in described the second base station, be that described the second terminal distribution M organizes the second resource to be selected, and described M organized to the second resource to be selected and inform described the first base station, afterwards

Described receiving element 601 also for: receive described target resource to be selected that described the first base station sends and the phone user of described the first multiplexing described target in community resource to be selected;

Described transmitting element 602 also for:

In described interference, surpass setting threshold, when described the second terminal is abandoned described target resource to be selected, notifying described the first base station is that described terminal communication user is to be selected as target to selecting next to organize resource to be selected

Pass through above-described embodiment, the D2D communication means providing by the embodiment of the present invention, after the first base station receives the D2D communication connection foundation request of first terminal transmission, to described the second base station, send the identify label of described first terminal and the identify label of described the second terminal, and obtain described the second terminal according to the link quality information of described detectable signal feedback by described the second base station, for distributing N, described first terminal organizes the first resource to be selected afterwards, and organize the second resource to be selected with described the second base station exchange M, afterwards, described the first base station is that described M+N organizes resource to be selected and sorts according to performance index, guaranteed that terminal communication user is to there being the more alternative communication resource, and according to the phone user of multiplexing resource to be selected in adjacent area, the interference of receiving side terminal is selected the resource of carrying out D2D communication, can reduce to greatest extent cochannel and disturb the interference causing, improve the performance of D2D communication.

It should be noted that conventionally in concrete application base station has the function of two kinds of base stations shown in Fig. 5 and Fig. 6 simultaneously, should not be construed as the restriction to the embodiment of the present invention.

Accordingly, the embodiment of the present invention also provides a kind of base station, the schematic diagram of the base station that Fig. 7 provides for the embodiment of the present invention.As shown in Figure 7, this base station comprises transmitter 74, receiver 71, memory 73 and the processor 72 being connected with transmitter 74, receiver 71 and memory 73 respectively.Certainly, base station can also comprise the universal components such as antenna, Base-Band Processing parts, middle radio frequency processing parts, input/output unit, and the embodiment of the present invention is in this no longer any restriction.

Memory 73 can be permanent memory, and for example hard disk drive and flash memory, have software module and device driver in memory 73.Software module can be carried out the various functional modules of said method of the present invention; Device driver can be network and interface drive program.

Wherein, in memory 73, store batch processing code, and the program code stored for calling memory of processor 72, for carrying out following operation:

After whole endpoint registrations in the first community, by receiver 71, receive the D2D communication connection foundation request that first terminal sends, the described D2D communication connection request of setting up is communicated by letter for setting up D2D with the second terminal, described the first community is the community at described the first place, base station, described first terminal is in described the first community, described the second terminal is in the second community, described the second community is the adjacent area of described the first community, described first terminal is the transmit leg of described D2D communication, described the second terminal is the recipient of described D2D communication, the identify label of the identify label that described D2D communication connection comprises described the second terminal in setting up and asking and the second base station of described the second community, described first terminal and the second terminal form a terminal communication user couple,

By transmitter 74, to described the second base station, send the identify label of described first terminal and the identify label of described the second terminal, so that described the second terminal is informed by the identify label of described first terminal in described the second base station, and inform that described the second terminal receives the detectable signal that described first terminal sends;

By receiver 71, obtain described the second terminal according to the link quality information of described detectable signal feedback;

Processor 72 is based on described link quality information, judge that described first terminal and the second terminal can carry out D2D while communicating by letter, for distributing N, described first terminal organizes the first resource to be selected, and organize the second resource to be selected with described the second base station exchange M, described M is organized to the second resource to be selected and described N and organize the first resource to be selected and form M+N and organize resource to be selected, it is that described the second base station is described the second terminal distribution that the M of institute organizes the second resource to be selected;

Interference according to the phone user of multiplexing resource to be selected in Liang Ge community to receiving side terminal, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected.

Accordingly, the embodiment of the present invention also provides a kind of base station, the schematic diagram of the base station that Fig. 8 provides for the embodiment of the present invention.As shown in Figure 8, this base station comprises transmitter 84, receiver 81, memory 83 and the processor 82 being connected with transmitter 84, receiver 81 and memory 83 respectively.Certainly, base station can also comprise the universal components such as antenna, Base-Band Processing parts, middle radio frequency processing parts, input/output unit, and the embodiment of the present invention is in this no longer any restriction.

Memory 83 can be permanent memory, and for example hard disk drive and flash memory, have software module and device driver in memory 83.Software module can be carried out the various functional modules of said method of the present invention; Device driver can be network and interface drive program.

Wherein, in memory 83, store batch processing code, and processor 82 is for calling the program code of memory 83 storages, for carrying out following operation:

After whole endpoint registrations in the second community, by receiver 81, receive the identify label of first terminal and the identify label of described the second terminal that the first base station sends, the identify label of the identify label of described first terminal and described the second terminal is carried in the D2D communication connection request that first terminal sends to described the first base station, the described D2D communication connection request of setting up is communicated by letter for setting up D2D with the second terminal, described the first base station is positioned at described the first community, described first terminal is in described the first community, described the second terminal is in the second community, described the second community is the adjacent area of described the first community, described first terminal is the transmit leg of described D2D communication, described the second terminal is the recipient of described D2D communication, the identify label of the identify label that described D2D communication connection comprises described the second terminal in setting up and asking and the second base station of described the second community,

By transmitter 84, the identify label of described first terminal is informed to described the second terminal, and inform that described the second terminal receives the detectable signal that described first terminal sends;

By receiver 81, obtain described the second terminal according to the link quality information of described detectable signal feedback, so that described the first base station judges according to described link quality information whether described first terminal and described the second terminal can carry out D2D and communicate by letter with described the second base station;

Processor 82 can carry out D2D while communicating by letter in judgement described first terminal and the second terminal, for described the second terminal distribution M organizes the second resource to be selected, and described M is organized to the second resource to be selected and inform described the first base station, so that the second resource to be selected and N are organized by described M in described the first base station, organize the M+N that the first resource to be selected forms and organize resource to be selected, interference according to the phone user of multiplexing resource to be selected in Liang Ge community to receiving side terminal, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected.

Professional should further recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software is clearly described, composition and the step of each example described according to function in the above description in general manner.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.

The software module that the method for describing in conjunction with embodiment disclosed herein or the step of algorithm can use hardware, processor to carry out, or the combination of the two is implemented.Software module can be placed in the storage medium of any other form known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.

Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection range being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a terminal-to-terminal service D2D communication means, is characterized in that, described method comprises:

After whole endpoint registrations of the first base station in the first community, receive the D2D communication connection foundation request that first terminal sends, the described D2D communication connection request of setting up is communicated by letter for setting up D2D with the second terminal, described the first community is the community at described the first place, base station, described first terminal is in described the first community, described the second terminal is in the second community, described the second community is the adjacent area of described the first community, described first terminal is the transmit leg of described D2D communication, described the second terminal is the recipient of described D2D communication, the identify label of the identify label that described D2D communication connection comprises described the second terminal in setting up and asking and the second base station of described the second community, described first terminal and the second terminal form a D2D communication user pair,

In described the first base station based on described link quality information, judge that described first terminal and the second terminal can carry out D2D while communicating by letter, for distributing N, described first terminal organizes the first resource to be selected, and organize the second resource to be selected with described the second base station exchange M, described M is organized to the second resource to be selected and described N and organize the first resource to be selected and form M+N and organize resource to be selected, it is that described the second base station is described the second terminal distribution that described M organizes the second resource to be selected;

2. the method for claim 1, it is characterized in that, described the first base station is based on described link quality information, judge that described first terminal and the second terminal can carry out D2D while communicating by letter, for distributing N, described first terminal organizes the first resource to be selected, and organize the second resource to be selected with described the second base station exchange M, and described M being organized to the second resource to be selected and described N and organize the first resource to be selected and form M+N and organize resource to be selected, it is that described the second base station is described the second terminal distribution that described M organizes the second resource to be selected; Afterwards, also comprise:

3. method as claimed in claim 2, is characterized in that, described the first base station is that described M+N organizes resource to be selected and sorts according to performance index, comprising:

4. method as claimed in claim 2, is characterized in that, described the first base station is that described M+N organizes resource to be selected and sorts according to performance index, comprising:

5. the method as described in claim 1 to 4 any one, it is characterized in that, described the first base station is the interference to receiving side terminal according to the phone user of multiplexing resource to be selected in Liang Ge community, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected, comprising:

6. the method as described in claim 1 to 4, it is characterized in that, described the first base station is the interference to receiving side terminal according to the phone user of multiplexing resource to be selected in Liang Ge community, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected, comprising:

M+N after described sequence organizes in resource to be selected, according to sequence sequencing, is that described D2D communication is to choosing one group of resource to be selected as target resource to be selected.

7. the method as described in claim 5 or 6, is characterized in that, after choosing described target resource to be selected, if select described target resource to be selected, is that described the first base station is the resource to be selected that described first terminal distributes:

Described the second base station is informed by described target resource to be selected in described the first base station, so that described the second terminal is notified by the phone user of multiplexing described target resource to be selected in the second community in described the second base station, so that the interference of the phone user that described terminal is calculated multiplexing described target resource to be selected in the second community to described the second terminal, when described interference surpasses setting threshold, abandon described target resource to be selected, and by described the second base station, to notify described the first base station be that described terminal communication user is to selecting next to organize resource to be selected as target resource to be selected.

8. the method as described in claim 5 or 6, is characterized in that, after choosing described target resource to be selected, if select described target resource to be selected, is that described the second base station is the resource to be selected of described the second terminal distribution:

Described the second base station is informed by the phone user of multiplexing described target resource to be selected in described target resource to be selected and described the first community in described the first base station, so that described the second terminal is notified by the phone user of multiplexing described target resource to be selected in the first community in described the second base station, so that the interference of the phone user that described the second terminal is calculated multiplexing described target resource to be selected in described the first community to described the second terminal, when described interference surpasses setting threshold, abandon described target resource to be selected, and by described the second base station, to notify described the first base station be that described terminal communication user is to selecting next to organize resource to be selected as target resource to be selected.

9. a terminal-to-terminal service D2D communication means, is characterized in that, described method comprises:

Described the second base station obtains described the second terminal according to the link quality information of described detectable signal feedback, so that described the first base station judges according to described link quality information whether described first terminal and described the second terminal can carry out D2D and communicate by letter with described the second base station;

In judgement described first terminal and the second terminal, can carry out D2D while communicating by letter, described the second base station is that described the second terminal distribution M organizes the second resource to be selected, and described M is organized to the second resource to be selected and inform described the first base station, so that the second resource to be selected and N are organized by described M in described the first base station, organize the first resource to be selected and form M+N and organize resource to be selected, interference according to the phone user of multiplexing resource to be selected in Liang Ge community to receiving side terminal, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected.

At described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described first terminal in described target resource to be selected, carry out D2D with described the second terminal and communicate by letter.

10. method as claimed in claim 9, is characterized in that, is that described the second terminal distribution M organizes the second resource to be selected, and described M is organized to the second resource to be selected and inform described the first base station in described the second base station, afterwards, also comprises:

11. methods as claimed in claim 9, is characterized in that, be that described the second terminal distribution M organizes the second resource to be selected, and described M organized to the second resource to be selected and inform described the first base station in described the second base station, afterwards, also comprise:

12. 1 kinds of base stations, is characterized in that, described base station comprises:

Receiving element, for after whole endpoint registrations of the first base station in the first community, receive the D2D communication connection foundation request that first terminal sends, the described D2D communication connection request of setting up is communicated by letter for setting up D2D with the second terminal, described the first community is the community at described the first place, base station, described first terminal is in described the first community, described the second terminal is in the second community, described the second community is the adjacent area of described the first community, described first terminal is the transmit leg of described whole D2D communication, described the second terminal is the recipient of described D2D communication, the identify label of the identify label that described D2D communication connection comprises described the second terminal in setting up and asking and the second base station of described the second community, described first terminal and the second terminal form a terminal communication user couple,

Allocation units, be used in described the first base station based on described link quality information, judge that described first terminal and the second terminal can carry out D2D while communicating by letter, for distributing N, described first terminal organizes the first resource to be selected, and organize the second resource to be selected with described the second base station exchange M, described M is organized to the second resource to be selected and described N and organize the first resource to be selected and form M+N and organize resource to be selected, it is that described the second base station is described the second terminal distribution that the M of institute organizes the second resource to be selected;

Selected cell, for the first base station interference to receiving side terminal according to the phone user of the multiplexing resource to be selected in Liang Ge community described in described the first base station, at described M+N, organize in resource to be selected, choose one group of resource to be selected as target resource to be selected, make described terminal communication user to carry out D2D communication in described target resource to be selected.

13. base stations as claimed in claim 1, is characterized in that, also comprise:

Sequencing unit is that described M+N organizes resource to be selected and sorts for described the first base station according to performance index.

14. base stations as claimed in claim 13, described sequencing unit specifically for:

15. base stations as claimed in claim 13, described sequencing unit specifically for:

16. base stations as described in right 12 to 15 any one, is characterized in that, described selected cell specifically for:

17. base stations as described in right 12 to 15 any one, is characterized in that, described selected cell specifically for:

18. base stations as described in claim 16 or 17, is characterized in that, after choosing described target resource to be selected, if select described target resource to be selected, are that described the first base station is the resource to be selected that described first terminal distributes, described transmitting element also for:

19. base stations as described in claim 16 or 17, is characterized in that, after choosing described target resource to be selected, if select described target resource to be selected, are that described the second base station is the resource to be selected of described the second terminal distribution, described transmitting element also for:

20. 1 kinds of base stations, is characterized in that, described base station comprises:

21. base stations as claimed in claim 20, is characterized in that, in described the second base station, are that described the second terminal distribution M organizes the second resource to be selected, and described M organized to the second resource to be selected and inform described the first base station, afterwards,

22. base stations as claimed in claim 20, is characterized in that, in described the second base station, are that described the second terminal distribution M organizes the second resource to be selected, and described M organized to the second resource to be selected and inform described the first base station, afterwards,

Described transmitting element also for:

The phone user of multiplexing described target resource to be selected in described target resource to be selected and described the first community is informed to described the second terminal, so that the interference of the phone user that described the second terminal is calculated multiplexing described target resource to be selected in described the first community to described the second terminal;