CN105766042B

CN105766042B - Method, access point and the website of direct point-to-point data link

Info

Publication number: CN105766042B
Application number: CN201480064084.3A
Authority: CN
Inventors: 林英沛; 张佳胤
Original assignee: Huawei Technologies Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2014-03-06
Filing date: 2014-03-06
Publication date: 2019-07-19
Anticipated expiration: 2034-03-06
Also published as: CN105766042A; WO2015131381A1

Abstract

The invention discloses a kind of method of direct point-to-point data link, access point and websites.This method comprises: AP receives the transmission resource request of the direct point-to-point data link between the first STA and the 2nd STA that the first STA is sent；The AP determines the transfer resource of the direct point-to-point data link according to the transmission resource request；The AP determines the transmission power of the direct point-to-point data link and the transmission power of the 3rd STA, and the interference that the transmission power of the direct point-to-point data link and the transmission power of the 3rd STA keep the transmission of the direct point-to-point data link and the 3rd STA mutual is lower than predetermined value；The AP sends the first scheduling information to the first STA and the 2nd STA, first scheduling information indicates the transfer resource of the direct point-to-point data link and the transmission power of the direct point-to-point data link, and the second scheduling information is sent to the 3rd STA, which indicates the transfer resource of the transmission power and the 3rd STA of the 3rd STA.The embodiment of the present invention is able to ascend network efficiency.

Description

Method, access point and the website of direct point-to-point data link

Technical field

The present invention relates to the communications fields, and more particularly, to the method for direct point-to-point data link, access point (Access Point, AP) and website (station, STA).

Background technique

Due to the rapid development of network technology and mobile device, it is based on Electrical and Electronic engineering association (Institute of Electrical and Electronics Engineers, IEEE) 802.11 standards WLAN (Wireless Local Area Network, WLAN) technology obtained significant progress and has been widely applied.Nowadays, the whole world has more than 17% population is connected to the network using Wireless Fidelity (Wireless Fidelity, WiFi), has more than 1,000,000,000 every year WiFi equipment delivers market.Family, hot spot, enterprise and operator deployment WiFi network be seen everywhere the trace of WiFi.Just Take the popularity rate of the intelligent terminal with WLAN function such as computer, tablet computer, smart phone, digital camera, media player It is higher and higher.While these intelligent terminals offer convenience to the work and life of people, also the development to WLAN technology is brought Very big challenge.Meanwhile the quantity of WiFi high-end applications is also constantly soaring.The letter transmitted by typical WiFi network Breath total amount is just increasing explosively.However, WLAN business is seen everywhere, bring is the increasingly congestion of WLAN frequency range. Wlan network uses free unauthorized frequency range.Due to the characteristic of this open spectrum, so that free unlicensed spectrum uses Growing tension.This proposes very high requirement to the frequency spectrum service efficiency of wlan network.

Summary of the invention

The embodiment of the invention provides a kind of method of direct point-to-point data link, access point and websites, are able to ascend network effect Rate.

In a first aspect, providing a kind of method of direct point-to-point data link, comprising:

The transfer resource that AP receives the direct point-to-point data link between the first STA and the 2nd STA that the first STA is sent is asked It asks；

The AP determines the transfer resource of the direct point-to-point data link according to the transmission resource request；

The AP determines the transmission power of the direct point-to-point data link and the transmission power of the 3rd STA, wherein the 3rd STA Transfer resource it is Chong Die with the transfer resource of the direct point-to-point data link, the transmission power of the direct point-to-point data link and the 3rd STA Transmission power keep the transmission of the direct point-to-point data link and the 3rd STA mutual interference lower than predetermined value；

The AP sends the first scheduling information to the first STA and the 2nd STA, which indicates the direct chain The transfer resource of road communication and the transmission power of the direct point-to-point data link, and the second scheduling information is sent to the 3rd STA, this Two scheduling informations indicate the 3rd STA transmission power and the 3rd STA transfer resource so that the first STA with this second STA carries out direct point-to-point data link according to first scheduling information, and the 3rd STA sends data according to second scheduling information.

With reference to first aspect, in the first possible implementation, the transmission of the direct point-to-point data link is determined in the AP Before the transmission power of power and the 3rd STA, this method further include:

The AP determines the local noise power of the AP；

The AP receives the position of each STA of the transmission of each STA in the first STA, the 2nd STA and the 3rd STA Confidence breath；

The disassociation frame that the AP is sent in association process according to each STA determines the chain between the AP and each STA Road information；

The AP receive the first STA transmission the first STA local noise power and the first STA and this second Link information between STA receives the local noise power of the 2nd STA of the 2nd STA transmission；

The AP determines the transmission power of the direct point-to-point data link and the transmission power of the 3rd STA, comprising:

The AP is according to the link between link information, the AP and each STA between the first STA and the 2nd STA Information, the location information of each STA, the local noise power of the AP, the local noise power of the first STA and this second The local noise power of STA, determine the direct point-to-point data link sends power and the transmission power of the 3rd STA.

The possible implementation of with reference to first aspect the first, in the second possible implementation, the AP determine The direct point-to-point data link sends power and the transmission power of the 3rd STA, comprising:

The AP according to the local noise power of link information, the first STA between the first STA and the 2nd STA with And the 2nd STA local noise power, determine the transmission power of the direct point-to-point data link；

The AP according to the link information sent between power, the first STA and the 2nd STA of the direct point-to-point data link, The location information of link information, each STA between the AP and each STA, the AP local noise power, this first The local noise power of STA and the local noise power of the 2nd STA, determine the transmission power of the 3rd STA.

The possible implementation of with reference to first aspect the first, in the third possible implementation, the AP determine The direct point-to-point data link sends power and the transmission power of the 3rd STA, comprising:

The AP determines the third according to the local noise power of link information, the AP between the AP and the 3rd STA The transmission power of STA；

The AP according to the link information sent between power, the first STA and the 2nd STA of the 3rd STA, the AP with The sheet of the location information of link information, each STA, the local noise power of the AP, the first STA between each STA The local noise power of Earth noise power and the 2nd STA determines the transmission power of the direct point-to-point data link.

Any possible implementation in the possible implementation of the first to three kind with reference to first aspect, the 4th In the possible implementation of kind, the disassociation frame which sends in association process according to each STA determines that the AP is each with this Link information between STA, comprising:

The AP determines the received signal power of the disassociation frame according to the disassociation frame；

The AP determines the reception of the disassociation frame according to the received signal power of the disassociation frame and the local noise power of the AP Signal strength；

The AP determines that the AP is every with this according to the received signal strength of specified the transmission power and the disassociation frame of the disassociation frame Link information between a STA.

Second aspect provides a kind of method of direct point-to-point data link, comprising:

First STA sends the transmission resource request of the direct point-to-point data link between the first STA and the 2nd STA to AP；

First STA receives the first scheduling information of AP transmission, which indicates the direct point-to-point data link Transfer resource and the direct point-to-point data link transmission power, wherein the direct point-to-point data link sends power and the 3rd STA It sends power and determines that the transfer resource of the 3rd STA is Chong Die with the transfer resource of the direct point-to-point data link by the AP, the direct chain The transmissions power of road communication and the transmissions power of the 3rd STA make the transmission of the direct point-to-point data link and the 3rd STA it is mutual it Between interference be lower than predetermined value；

First STA using the transmission power of the direct point-to-point data link and is somebody's turn to do on the transfer resource of the direct point-to-point data link 2nd STA carries out direct point-to-point data link.

In conjunction with second aspect, in the first possible implementation, the transmission power of the direct point-to-point data link and this Three STA send power by the AP according between the first STA and the 2nd STA link information, the AP and the first STA, The local of the location information of the link information between each STA, each STA in 2nd STA and the 3rd STA, the AP The local noise power of noise power, the local noise power of the first STA and the 2nd STA determines；

The transmission resource request of the direct point-to-point data link between the first STA and the 2nd STA is sent to AP in the first STA Before, this method further include:

First STA sends the location information of the first STA to the AP；

First STA sends disassociation frame to the AP in association process, so that the AP is determined between the AP and the first STA Link information；

First STA determines the local noise power of the first STA；

First STA sends discovery claim frame to the 2nd STA with rated power, receives the 2nd STA with rated power The discovery response frame of transmission；

First STA determines the link information between the first STA and the 2nd STA according to the discovery response frame；

First STA to the AP send the first STA local noise power and the first STA and the 2nd STA it Between link information.

In conjunction with the first possible implementation of second aspect, in the second possible implementation, the first STA According to the discovery response frame, the link information between the first STA and the 2nd STA is determined, comprising:

First STA determines the received signal power of the discovery response frame according to the discovery response frame；

First STA is determined according to the received signal power of the discovery response frame and the local noise power of the first STA The received signal strength of the discovery response frame；

First STA according to the received signal strength of specified the transmission power and the discovery response frame of the discovery response frame, Determine the link information between the first STA and the 2nd STA.

The third aspect provides a kind of access point AP, comprising:

Receiving module, for receiving the direct point-to-point data link between the first STA and the 2nd STA that the first STA is sent Transmission resource request；

Determining module for determining the transfer resource of the direct point-to-point data link according to the transmission resource request, and determines The direct point-to-point data link sends power and the transmission power of the 3rd STA, wherein the transfer resource of the 3rd STA is straight with this The transfer resource overlapping of link communication is connect, the transmission power of the direct point-to-point data link and the transmission power of the 3rd STA keep this straight The mutual interference of transmitting for connecing link communication and the 3rd STA is lower than predetermined value；

Sending module, for sending the first scheduling information to the first STA and the 2nd STA, which refers to Show the transfer resource of the direct point-to-point data link and the transmission power of the direct point-to-point data link, and sends second to the 3rd STA and adjust Spend information, second scheduling information indicate the 3rd STA transmission power and the 3rd STA transfer resource so that this first STA and the 2nd STA carries out direct point-to-point data link according to first scheduling information, and the 3rd STA is according to second scheduling information Send data.

In conjunction with the third aspect, in the first possible implementation, the receiving module be also used to receive the first STA, The location information for each STA that each STA in 2nd STA and the 3rd STA is sent receives the first STA transmission Link information between the local noise power and the first STA and the 2nd STA of first STA receives the 2nd STA hair The local noise power of the 2nd STA sent；

The determining module is also used to determine the local noise power of the AP, is sent in association process according to each STA Disassociation frame, determine the link information between the AP and each STA；

The determining module be specifically used for according between the first STA and the 2nd STA link information, the AP and this each This Earth noise of the location information of link information, each STA, the local noise power of the AP, the first STA between STA The local noise power of power and the 2nd STA, determine the direct point-to-point data link sends power and the transmission of the 3rd STA Power.

In conjunction with the first possible implementation of the third aspect, in the second possible implementation, the determination mould Block be specifically used for according to the local noise power of link information, the first STA between the first STA and the 2nd STA and The local noise power of 2nd STA determines the transmission power of the direct point-to-point data link, according to the transmission of the direct point-to-point data link Link information, the AP between power, the first STA and the 2nd STA and the link information between each STA, this is each The location information of STA, the local noise power of the AP, the local noise power of the first STA and the local of the 2nd STA are made an uproar Acoustical power determines the transmission power of the 3rd STA.

In conjunction with the first possible implementation of the third aspect, in the third possible implementation, the determination mould Block is specifically used for the local noise power according to link information, the AP between the AP and the 3rd STA, determines the 3rd STA Transmission power, according to the link information of the 3rd STA sent between power, the first STA and the 2nd STA, the AP with The sheet of the location information of link information, each STA, the local noise power of the AP, the first STA between each STA The local noise power of Earth noise power and the 2nd STA determines the transmission power of the direct point-to-point data link.

In conjunction with the third aspect the first to three kind of possible implementation in any possible implementation, the 4th In the possible implementation of kind, which is specifically used for determining the received signal power of the disassociation frame according to the disassociation frame, The received signal strength that the disassociation frame is determined according to the local noise power of the received signal power of the disassociation frame He the AP, according to The specified transmission power of the disassociation frame and the received signal strength of the disassociation frame determine that the link between the AP and each STA is believed Breath.

Fourth aspect provides a kind of site STA, comprising:

Sending module, for sending the transmission resource request of the direct point-to-point data link between the STA and the 2nd STA to AP；

Receiving module, for receiving the first scheduling information of AP transmission, which indicates the direct link The transfer resource of communication and the transmission power of the direct point-to-point data link, wherein the transmission power and third of the direct point-to-point data link The transmission power of STA is determined that the transfer resource of the 3rd STA is Chong Die with the transfer resource of the direct point-to-point data link by the AP, should The transmission power of direct point-to-point data link and the transmission power of the 3rd STA make the transmission of the direct point-to-point data link He the 3rd STA Mutual interference is lower than predetermined value；

Operation module, for using the transmission power of the direct point-to-point data link on the transfer resource of the direct point-to-point data link Direct point-to-point data link is carried out with the 2nd STA.

In conjunction with fourth aspect, in the first possible implementation, the transmission power of the direct point-to-point data link and this The transmission power of three STA is by the AP according to link information, the AP and the STA, the 2nd STA between the STA and the 2nd STA The location information of link information, each STA between the 3rd each STA in STA, the AP local noise power, The local noise power of the STA and the local noise power of the 2nd STA determine；

The sending module is also used to send the location information of the STA to the AP, sends and is associated with to the AP in association process Frame sends discovery claim frame to the 2nd STA so that the AP determines the link information between the AP and the STA, with rated power；

The receiving module is also used to receive the discovery response frame that the 2nd STA is sent with rated power；

The STA further include:

Determining module, for determining the local noise power of the STA, according to the discovery response frame determine the STA and this Link information between two STA；

The sending module is also used to send to the AP between the local noise power and the STA and the 2nd STA of the STA Link information.

In conjunction with the first possible implementation of fourth aspect, in the second possible implementation, the determination mould Block is specifically used for determining the received signal power of the discovery response frame according to the discovery response frame, according to connecing for the discovery response frame Receipts signal power and the local noise power of the STA determine the received signal strength of the discovery response frame, are responded according to the discovery The specified transmission power of frame and the received signal strength of the discovery response frame determine that the link between the STA and the 2nd STA is believed Breath.

Based on the above-mentioned technical proposal, the embodiment of the present invention passes through the direct point-to-point data link for determining the first STA and the 2nd STA The transmission power for sending power and the 3rd STA keeps the direct point-to-point data link low with the mutual interference of the transmission of the 3rd STA In predetermined value, the direct point-to-point data link of the first STA and the 2nd STA and the transmission of the 3rd STA can be made to carry out simultaneously, so as to Promote network efficiency.

Detailed description of the invention

In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing.

Fig. 1 is the schematic diagram of an application scenarios of the embodiment of the present invention.

Fig. 2 is the schematic flow chart of the method for direct point-to-point data link according to an embodiment of the invention.

Fig. 3 is the schematic flow chart of the method for direct point-to-point data link according to another embodiment of the present invention.

Fig. 4 is the schematic block diagram of AP according to an embodiment of the present invention.

Fig. 5 is the schematic block diagram of STA according to an embodiment of the present invention.

Fig. 6 is the structural schematic diagram of AP according to an embodiment of the present invention.

Fig. 7 is the structural schematic diagram of STA according to an embodiment of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiment is a part of the embodiments of the present invention, rather than whole embodiments.Based on this hair Embodiment in bright, those of ordinary skill in the art's every other reality obtained without creative labor Example is applied, all should belong to the scope of protection of the invention.

Fig. 1 is the schematic diagram of an application scenarios of the embodiment of the present invention.In Fig. 1, STA 101, STA 102 and STA 103 are all associated with AP 100.The basic service set (Basic Service Set, BSS) that AP 100 is established is connect with the channel of scheduling Enter mechanism works.AP 100 is responsible for the scheduling and distribution of transfer resource.In entire BSS, normal link (AP to STA or STA To AP) and direct link, (STA to STA) is coexisted.Belong to direct point-to-point data link, 103 He of STA between STA 101 and STA 102 Belong to normal link communication between AP 100.Direct point-to-point data link and STA 103 and AP between STA 101 and STA 102 In the case where the transfer resource overlapping of normal link communication between 100, two-way communication may be interfered with each other.

It should be understood that in embodiments of the present invention, transfer resource overlapping indicates that transfer resource is identical or part is identical.

Fig. 2 shows the schematic flow charts of the method 200 of direct point-to-point data link according to an embodiment of the present invention.Such as Fig. 2 Shown, this method 200 includes:

S210, AP receive the transmission money of the direct point-to-point data link between the first STA and the 2nd STA that the first STA is sent Source request；

S220, the AP determine the transfer resource of the direct point-to-point data link according to the transmission resource request；

S230, the AP determine the transmission power for sending power and the 3rd STA of the direct point-to-point data link, wherein this The transfer resource of three STA and the transfer resource of the direct point-to-point data link are Chong Die, the transmission power of the direct point-to-point data link and this The interference that the transmission power of three STA keeps the transmission of the direct point-to-point data link and the 3rd STA mutual is lower than predetermined value；

S240, the AP send the first scheduling information to the first STA and the 2nd STA, and first scheduling information instruction should The transfer resource of direct point-to-point data link and the transmission power of the direct point-to-point data link, and the second scheduling letter is sent to the 3rd STA Breath, second scheduling information indicate the 3rd STA transmission power and the 3rd STA transfer resource so that the first STA with 2nd STA carries out direct point-to-point data link according to first scheduling information, and the 3rd STA sends number according to second scheduling information According to.

In embodiments of the present invention, the executing subject AP of this method 200 can be the AP 100 in Fig. 1, the first STA, Two STA and the 3rd STA can be STA 101, STA 102 and STA 103 in Fig. 1 respectively.It should be understood that the transmission of the 3rd STA The transmission that can be the 3rd STA to AP is also possible to the direct point-to-point data link of the 3rd STA Yu other STA (such as the 4th STA), The present invention does not limit this.

When first STA and the 2nd STA will carry out direct point-to-point data link, the first STA (or the 2nd STA) sends this directly to AP The transmission resource request of link communication, to AP application transfer resource.After AP receives the transmission resource request, for the direct link Allocation of communications transfer resource.In order to dispatch the 3rd STA simultaneously, AP determines the transmission power and the of the direct point-to-point data link together The transmission power of three STA, so that the mutual interference of transmitting of the direct point-to-point data link and the 3rd STA is lower than predetermined value, That is the direct point-to-point data link is direct to this lower than the transmission of predetermined value and the 3rd STA to the interference of the transmission of the 3rd STA The interference of link communication is lower than predetermined value.Then, which sends the first scheduling information to the first STA and the 2nd STA, this One scheduling information indicates the transfer resource of the direct point-to-point data link and the transmission power of the direct point-to-point data link, to the 3rd STA The second scheduling information is sent, which indicates the transfer resource of the transmission power and the 3rd STA of the 3rd STA. First STA and the 2nd STA carries out direct point-to-point data link, i.e. the first STA and the 2nd STA according to first scheduling information The direct chain indicated on the transfer resource of the direct point-to-point data link of first scheduling information instruction using first scheduling information The transmission power of road communication is communicated.3rd STA sends data according to second scheduling information, i.e. the 3rd STA this The transmission power of the 3rd STA indicated on the transfer resource of 3rd STA of two scheduling informations instruction using second scheduling information Send data.Since the AP transmission power of the direct point-to-point data link determined and the transmission power of the 3rd STA make the direct chain Road communication and the mutual interference of transmitting of the 3rd STA are lower than predetermined value, therefore, the direct chain of the first STA and the 2nd STA Road communication can carry out simultaneously with the transmission of the 3rd STA, to improve network efficiency.

Therefore, the method for the direct point-to-point data link of the embodiment of the present invention, by determining that the first STA's and the 2nd STA is direct The transmission power of the transmission power and the 3rd STA of link communication, make the transmission of the direct point-to-point data link and the 3rd STA mutually it Between interference be lower than predetermined value, can make the transmission of the direct point-to-point data link of the first STA and the 2nd STA and the 3rd STA simultaneously into Row, so as to promote network efficiency.

In embodiments of the present invention, optionally, AP can determine the direct point-to-point data link according to the location information of each STA The transmission power for sending power and the 3rd STA.

In embodiments of the present invention, optionally, AP determines the transmission power of the direct point-to-point data link and the hair of the 3rd STA Send power, comprising:

In this case, AP will first obtain link information between the first STA and the 2nd STA, the AP and this is every It makes an uproar the local of the location information of link information, each STA, the local noise power of the AP, the first STA between a STA The local noise power of acoustical power and the 2nd STA.

Therefore, optionally, the AP determine the direct point-to-point data link the transmission power for sending power and the 3rd STA it Before, this method 200 further include:

The AP determines the local noise power of the AP；

The AP receive the first STA transmission the first STA local noise power and the first STA and this second Link information between STA receives the local noise power of the 2nd STA of the 2nd STA transmission.

AP estimates the local noise power of AP first.For example, AP can pass through calculating average noise power (average Noise power indicator, ANPI) estimate local noise power.Meter in the estimation method and current standard of ANPI Calculation method is identical.

Each STA is reported to AP in association process, by the location information of oneself.It should be understood that STA can also be at other Between report oneself location information, the present invention does not limit this.

For each STA when being associated with AP, AP estimates the chain between each STA and AP according to the disassociation frame that each STA is sent Road information, such as fading information.

Optionally, the disassociation frame which sends in association process according to each STA determines the AP and each STA Between link information, comprising:

For example, AP estimates received signal power (received channel power by the disassociation frame that STA is interacted Indicator, RCPI).The estimation method of RCPI is also identical as the calculation method in current standard.AP is by subtracting RCPI ANPI obtains received signal strength.Since the interaction of disassociation frame is sent with rated power, subtracted by the rated power Link information between received signal strength available AP and STA.

Each STA estimates the local noise power of oneself, and saves.For example, STA can also be estimated by calculating ANPI Local noise power.

Each STA needs the frame that can be received to each to demodulate media access control (Medium Access Control, MAC) frame head, to determine whether the frame is sent to oneself.STA determines the STA that oneself can be heard according to these information, And record these STA.For example, the first STA can hear the information of the 2nd STA, the 2nd STA of discovery is in the proximity of oneself Domain.When having business between the first STA and the 2nd STA, the first STA first determines whether the 2nd STA is in the proximity of oneself In the STA list in domain.If it was not then abandoning establishing direct link, then communicated by normal link.If in list, Discovery claim frame is then sent with rated power to the 2nd STA, for example, device-to-device (Device to Device, D2D) Discovery Request frame.2nd STA replys discovery response frame with rated power, for example, D2D Discovery Response frame.First STA and the 2nd STA are according to D2D Discovery Request frame and D2D Discovery The link information of the interaction estimation of Response frame between the two, such as fading information.First STA and the 2nd STA establish direct chain Road correspondence, and link information by the noise power locally saved and between the two is reported to AP, wherein the first STA and Link information between 2nd STA can be sent to AP by any one in the first STA and the 2nd STA.

When first STA and the 2nd STA will carry out direct point-to-point data link, the first STA (or the 2nd STA) sends this directly to AP The transmission resource request of link communication, to AP application transfer resource.After AP receives the transmission resource request, for the direct link Allocation of communications transfer resource.Meanwhile AP selects the 3rd STA, for example, selecting from the first STA and the 2nd farther away STA of STA.AP is 3rd STA distributes the transfer resource Chong Die with the transfer resource of the direct point-to-point data link.In order to simultaneously scheduling transmission resources with should 3rd STA of the transfer resource overlapping of direct point-to-point data link, AP determine the transmission power and the of the direct point-to-point data link together The transmission power of three STA.Specifically, AP according to before obtain the first STA and the 2nd STA between link information, should The location information of link information, each STA, the local noise power of the AP, the first STA between AP and each STA Local noise power and the 2nd STA local noise power, determine the transmission power and of the direct point-to-point data link The transmission power of three STA, the interference for keeping the transmission of the direct point-to-point data link and the 3rd STA mutual is lower than predetermined value.

For example, it is assumed that the 3rd STA that is transmitted as of the 3rd STA is communicated with the normal link of AP, with reference to Fig. 1,101 He of STA Direct point-to-point data link between STA 102 is STA 101 and STA 102 with straight to the interference of the transmission of STA 103 and AP 100 The data and the reception hair of AP 100 of STA 103 that STA 103 is sent are received to AP 100 when connecing the power transmission data of link communication The interference for the data sent can use the power of direct point-to-point data link, the transmission power of STA 103, the chain between AP and each STA Road information, the local noise power of AP represent；The transmission of STA 103 and AP 100 are to straight between STA 101 and STA 102 The interference for connecing link communication is that STA 103 is sent when data and AP 100 send data to STA 103 to AP 100 to STA 101 The data and STA 102 that receive STA 102 receive the interference of the data of STA 101, can use the power of direct point-to-point data link, The transmission power of STA 103, the link information between STA 101 and STA 102, the link letter between STA 103 and STA 101 Breath, the link information between STA 103 and STA 101, the local noise power of STA 101 and this Earth noise of STA 102 Power represents, wherein the link between link information and STA 103 and STA 101 between STA 103 and STA 101 Information can be obtained by the positional information calculation of link information and each STA between AP and each STA.

AP is determined under conditions of the mutual interference of the transmission of direct point-to-point data link and the 3rd STA is lower than predetermined value The transmission power of the transmission power and the 3rd STA of direct point-to-point data link.AP can first determine the transmission power of direct point-to-point data link The transmission power for determining the 3rd STA again can also first determine that the transmission power of the 3rd STA determines the transmission of direct point-to-point data link again Power.

Optionally, in one embodiment of the invention, AP determines the transmission power and third of the direct point-to-point data link The transmission power of STA, comprising:

In the present embodiment, AP is first according to the sheet of link information, the first STA between the first STA and the 2nd STA The local noise power of Earth noise power and the 2nd STA determines the transmission power of the direct point-to-point data link, then in direct chain Road communication and the mutual interference of transmitting of the 3rd STA are lower than under conditions of predetermined value, according to the hair of the direct point-to-point data link Send that link information between link information, the AP and each STA between power, the first STA and the 2nd STA, this is every The location information of a STA, the local noise power of the AP, the local noise power of the first STA and the local of the 2nd STA Noise power determines the transmission power of the 3rd STA.

Optionally, in another embodiment of the present invention, AP determines the transmission power and of the direct point-to-point data link The transmission power of three STA, comprising:

In the present embodiment, AP is first according to this Earth noise function of link information, the AP between the AP and the 3rd STA Rate determines the transmission power of the 3rd STA, then is lower than in the mutual interference of the transmission of direct point-to-point data link and the 3rd STA Under conditions of predetermined value, according to the link information of the 3rd STA sent between power, the first STA and the 2nd STA, it is somebody's turn to do The location information of link information, each STA, the local noise power of the AP, the first STA between AP and each STA Local noise power and the 2nd STA local noise power, determine the transmission power of the direct point-to-point data link.

Optionally, the first STA and the 2nd STA can also voluntarily determine the transmission power of direct point-to-point data link, and be sent to AP；AP is according to the 3rd STA of transmission power selection of the direct point-to-point data link and determines the transmission power of the 3rd STA.In this feelings Under condition, if AP determines that the transmission power of the direct point-to-point data link is suitable, can only it send to the first STA and the 2nd STA Transfer resource is indicated in scheduling information；If AP determines that the transmission power of the direct point-to-point data link is improper, can redefine The transmission power of direct point-to-point data link, and in the instruction transfer resource into the scheduling information of the first STA and the 2nd STA transmission and again The newly transmission power of determining direct point-to-point data link.

The method of the direct point-to-point data link of the embodiment of the present invention, the direct link by determining the first STA and the 2nd STA are logical The transmission power of the transmission power and the 3rd STA of letter makes the transmission of the direct point-to-point data link and the 3rd STA are mutual to do It disturbs lower than predetermined value, the direct point-to-point data link of the first STA and the 2nd STA and the transmission of the 3rd STA can be made to carry out simultaneously, therefore Frequency spectrum resource can be made full use of, so as to promote network efficiency.

The method that the direct point-to-point data link of the embodiment of the present invention is described in detail from the angle of AP above, below from first The method of the direct point-to-point data link of the angle the present invention is described in detail embodiment of STA.

Fig. 3 shows the schematic flow chart of the method 300 of direct point-to-point data link according to an embodiment of the present invention.Such as Fig. 3 Shown, this method 300 includes:

S310, the first STA are asked to the transfer resource that AP sends the direct point-to-point data link between the first STA and the 2nd STA It asks；

S320, the first STA receive the first scheduling information of AP transmission, which indicates the direct link The transfer resource of communication and the transmission power of the direct point-to-point data link, wherein the transmission power and third of the direct point-to-point data link The transmission power of STA is determined that the transfer resource of the 3rd STA is Chong Die with the transfer resource of the direct point-to-point data link by the AP, should The transmission power of direct point-to-point data link and the transmission power of the 3rd STA make the transmission of the direct point-to-point data link He the 3rd STA Mutual interference is lower than predetermined value；

S330, the first STA use the transmission function of the direct point-to-point data link on the transfer resource of the direct point-to-point data link Rate and the 2nd STA carry out direct point-to-point data link.

In embodiments of the present invention, the first STA of executing subject of this method 300 can be STA 101 or STA in Fig. 1 102, correspondingly, the 2nd STA can be STA 102 or STA 101；3rd STA can be the STA 103 in Fig. 1；AP can be AP 100 in Fig. 1.

When first STA and the 2nd STA will carry out direct point-to-point data link, the first STA sends the direct point-to-point data link to AP Transmission resource request, to AP application transfer resource.After AP receives the transmission resource request, distributes and pass for the direct point-to-point data link Defeated resource.Meanwhile AP selects the 3rd STA, for example, selecting from the first STA and the 2nd farther away STA of STA.AP is the 3rd STA points With the transfer resource Chong Die with the transfer resource of the direct point-to-point data link.In order to dispatch the 3rd STA simultaneously, AP determines that this is straight together Connect link communication sends power and the transmission power of the 3rd STA, so that the transmission of the direct point-to-point data link and the 3rd STA Mutual interference is lower than predetermined value, i.e. the direct point-to-point data link is lower than predetermined value simultaneously to the interference of the transmission of the 3rd STA And the 3rd the transmission of STA predetermined value is lower than to the interference of the direct point-to-point data link.The AP is to the first STA and the 2nd STA The first scheduling information is sent, which indicates the transfer resource and the direct point-to-point data link of the direct point-to-point data link Send power, to the 3rd STA send the second scheduling information, second scheduling information indicate the 3rd STA transmission power and The transfer resource of 3rd STA.First STA receives the first scheduling information of AP transmission, in the biography of the direct point-to-point data link Direct point-to-point data link is carried out using the transmission power of the direct point-to-point data link and the 2nd STA in defeated resource.It is determined due to AP The transmission power of the direct point-to-point data link and the transmission power of the 3rd STA make the biography of the direct point-to-point data link He the 3rd STA Defeated mutual interference is lower than predetermined value, and therefore, the direct point-to-point data link of the first STA and the 2nd STA can be with the 3rd STA's It transmits while carrying out, to improve network efficiency.

Therefore, the method for the direct point-to-point data link of the embodiment of the present invention makes the first STA and second by using what AP was determined Transmission of the mutual interference of the transmission of the direct point-to-point data link of STA and the 3rd STA lower than the direct point-to-point data link of predetermined value Power carries out direct point-to-point data link, can make the transmission of the direct point-to-point data link of the first STA and the 2nd STA and the 3rd STA simultaneously It carries out, so as to promote network efficiency.

In embodiments of the present invention, optionally, the transmission power of the transmission power and the 3rd STA of the direct point-to-point data link By the AP according between the first STA and the 2nd STA link information, the AP and the first STA, the 2nd STA and this The location information of the link information between each STA, each STA in three STA, the AP local noise power, this first The local noise power of STA and the local noise power of the 2nd STA determine.

In this case, the direct point-to-point data link between the first STA and the 2nd STA is sent to AP in the first STA Transmission resource request before, this method 300 further include:

First STA sends the location information of the first STA to the AP；

First STA determines the local noise power of the first STA；

For example, the first STA is reported to AP in association process, by the location information of oneself.

For first STA when being associated with AP, AP estimates the chain between the first STA and AP according to the disassociation frame that the first STA is sent Road information, such as fading information.

First STA estimates the local noise power of oneself, and saves.For example, the first STA can be estimated by calculating ANPI Count local noise power.

Each STA needs the frame that can be received to each to demodulate mac frame head, to determine whether the frame is sent to oneself. STA determines the STA that oneself can be heard according to these information, and records these STA.For example, the first STA can hear the 2nd STA Information, the 2nd STA of discovery is in oneself adjacent domain.When having business between the first STA and the 2nd STA, the first STA is first First judge whether the 2nd STA is in the STA list of the adjacent domain of oneself.If it was not then abandoning establishing direct link, turn And it is communicated by normal link.If discovery claim frame is sent to the 2nd STA with rated power, for example, D2D in list Discovery Request frame.2nd STA replys discovery response frame with rated power, for example, D2D Discovery Response frame.First STA and the 2nd STA are according to D2D Discovery Request frame and D2D Discovery The link information of the interaction estimation of Response frame between the two, such as fading information.

Optionally, the first STA determines the link letter between the first STA and the 2nd STA according to the discovery response frame Breath, comprising:

For example, the first STA estimates RCPI by discovery response frame, ANPI is subtracted by RCPI and obtains received signal strength. Because it is found that claim frame and discovery response frame are to be sent with rated power, therefore subtract received signal strength by the rated power It can estimate the link information between direct point-to-point data link pair.

It should be understood that can be determined between the first STA and the 2nd STA according to discovery claim frame for the 2nd STA Link information.

First STA and the 2nd STA establishes direct point-to-point data link relationship, and by the noise power locally saved and between the two Link information be reported to AP, wherein the link information between the first STA and the 2nd STA can be by the first STA and the 2nd STA In any one be sent to AP, such as sent by the first STA.

When first STA and the 2nd STA will carry out direct point-to-point data link, the first STA sends the direct point-to-point data link to AP Transmission resource request, to AP application transfer resource.After AP receives the transmission resource request, distributes and pass for the direct point-to-point data link Defeated resource.In order to which scheduling transmission resources threeth STA Chong Die with the transfer resource of the direct point-to-point data link, AP are determined together simultaneously The direct point-to-point data link sends power and the transmission power of the 3rd STA.Specifically, AP according to before obtain this first Link information, the AP between STA and the 2nd STA and the link information between each STA, each STA location information, Local noise power, the local noise power of the first STA and the local noise power of the 2nd STA of the AP, determining should Direct point-to-point data link sends power and the transmission power of the 3rd STA, makes the transmission of the direct point-to-point data link He the 3rd STA Mutual interference is lower than predetermined value.

AP is determined under conditions of the mutual interference of the transmission of direct point-to-point data link and the 3rd STA is lower than predetermined value The transmission power of the transmission power and the 3rd STA of direct point-to-point data link.First STA uses the transmission power of the direct point-to-point data link Direct point-to-point data link is carried out with the 2nd STA.

The method of the direct point-to-point data link of the embodiment of the present invention makes the first STA's and the 2nd STA by using what AP was determined The mutual interference of the transmission of direct point-to-point data link and the 3rd STA lower than the direct point-to-point data link of predetermined value transmission power into Row direct point-to-point data link can be such that the direct point-to-point data link of the first STA and the 2nd STA and the transmission of the 3rd STA carries out simultaneously, because This can make full use of frequency spectrum resource, so as to promote network efficiency.

It should be understood that in embodiments of the present invention, AP, the first STA, the 2nd STA and the 3rd STA that the side AP describes are mutual Interaction and correlation properties, function etc. it is corresponding to the description of the first side STA, for sake of simplicity, details are not described herein.

It should be understood that in various embodiments of the present invention, magnitude of the sequence numbers of the above procedures are not meant to execute suitable Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention Process constitutes any restriction.

The method that direct point-to-point data link according to an embodiment of the present invention has been described in detail above is described below according to this The AP and STA of inventive embodiments.

Fig. 4 shows the schematic block diagram of AP 400 according to an embodiment of the present invention.As shown in figure 4, the AP 400 includes:

Receiving module 410, the direct link between the first STA and the 2nd STA for receiving the transmission of the first site STA The transmission resource request of communication；

Determining module 420, for determining the transfer resource of the direct point-to-point data link according to the transmission resource request, and really The fixed direct point-to-point data link sends power and the transmission power of the 3rd STA, wherein the transfer resource of the 3rd STA with should The transfer resource of direct point-to-point data link is overlapped, and the transmission power of the direct point-to-point data link and the transmission power of the 3rd STA make this The interference that the transmission of direct point-to-point data link and the 3rd STA are mutual is lower than predetermined value；

Sending module 430, for sending the first scheduling information, first scheduling information to the first STA and the 2nd STA It indicates the transfer resource of the direct point-to-point data link and the transmission power of the direct point-to-point data link, and sends second to the 3rd STA Scheduling information, second scheduling information indicate the transfer resource of the transmission power and the 3rd STA of the 3rd STA so that this One STA and the 2nd STA carries out direct point-to-point data link according to first scheduling information, and the 3rd STA believes according to second scheduling Breath sends data.

The AP of the embodiment of the present invention, by the transmission power and for determining the direct point-to-point data link of the first STA and the 2nd STA The transmission power of three STA, the interference for keeping the transmission of the direct point-to-point data link and the 3rd STA mutual, can lower than predetermined value So that the first STA and the direct point-to-point data link of the 2nd STA and the transmission of the 3rd STA carry out simultaneously, so as to promote network effect Rate.

In embodiments of the present invention, optionally, the receiving module 410 be also used to receive the first STA, the 2nd STA and The location information for each STA that each STA in 3rd STA is sent receives the first STA's of the first STA transmission Link information between local noise power and the first STA and the 2nd STA, receive the 2nd STA transmission this second The local noise power of STA；

The determining module 420 is also used to determine the local noise power of the AP, is sent out in association process according to each STA The disassociation frame sent determines the link information between the AP and each STA；

The determining module 420 be specifically used for according between the first STA and the 2nd STA link information, the AP with should The local of the location information of link information, each STA, the local noise power of the AP, the first STA between each STA The local noise power of noise power and the 2nd STA, determine the direct point-to-point data link sends power and the 3rd STA Send power.

In embodiments of the present invention, optionally, which is specifically used for according to the first STA and the 2nd STA Between link information, the local noise power of the first STA and the local noise power of the 2nd STA, determine this directly The transmission power of link communication, according to the chain of the direct point-to-point data link sent between power, the first STA and the 2nd STA The location information of link information, each STA between road information, the AP and each STA, the AP local noise power, The local noise power of first STA and the local noise power of the 2nd STA, determine the transmission power of the 3rd STA.

In embodiments of the present invention, optionally, which is specifically used for according between the AP and the 3rd STA Link information, the AP local noise power, the transmission power of the 3rd STA is determined, according to the transmission function of the 3rd STA Link information, the AP between rate, the first STA and the 2nd STA and the link information between each STA, each STA Location information, the AP local noise power, the local noise power of the first STA and this Earth noise of the 2nd STA Power determines the transmission power of the direct point-to-point data link.

In embodiments of the present invention, optionally, which is specifically used for determining the disassociation frame according to the disassociation frame Received signal power, connecing for the disassociation frame is determined according to the local noise power of the received signal power of the disassociation frame He the AP Signal strength is received, determines that the AP is each with this according to the received signal strength of the specified transmission power of the disassociation frame and the disassociation frame Link information between STA.

The method that AP 400 according to an embodiment of the present invention can correspond to direct point-to-point data link according to an embodiment of the present invention In AP, and above and other operation and/or function of the modules in AP 400 is respectively in order to realize aforementioned each side The corresponding process of method, for sake of simplicity, details are not described herein.

The AP of the embodiment of the present invention, by the transmission power and for determining the direct point-to-point data link of the first STA and the 2nd STA The transmission power of three STA, the interference for keeping the transmission of the direct point-to-point data link and the 3rd STA mutual, can lower than predetermined value So that the first STA and the direct point-to-point data link of the 2nd STA and the transmission of the 3rd STA carry out simultaneously, therefore frequency can be made full use of Spectrum resource, so as to promote network efficiency.

Fig. 5 shows the schematic block diagram of STA 500 according to an embodiment of the present invention.As shown in figure 5, the STA 500 is wrapped It includes:

Sending module 510, for sending the transmission of the direct point-to-point data link between the STA and the 2nd STA to access point AP Resource request；

Receiving module 520, for receiving the first scheduling information of AP transmission, which indicates the direct chain The transfer resource of road communication and the transmission power of the direct point-to-point data link, wherein the transmission power of the direct point-to-point data link and the The transmission power of three STA is determined that the transfer resource of the 3rd STA is Chong Die with the transfer resource of the direct point-to-point data link by the AP, The transmission power of the direct point-to-point data link and the transmission power of the 3rd STA make the biography of the direct point-to-point data link He the 3rd STA Defeated mutual interference is lower than predetermined value；

Operation module 530, for using the transmission of the direct point-to-point data link on the transfer resource of the direct point-to-point data link Power and the 2nd STA carry out direct point-to-point data link.

The STA of the embodiment of the present invention, by using the AP direct point-to-point data link for making the STA and the 2nd STA determined and the The mutual interference of the transmission of three STA carries out direct point-to-point data link lower than the transmission power of the direct point-to-point data link of predetermined value, The direct point-to-point data link of the STA and the 2nd STA and the transmission of the 3rd STA can be made to carry out simultaneously, so as to promote network effect Rate.

In embodiments of the present invention, optionally, the transmission power of the transmission power and the 3rd STA of the direct point-to-point data link By the AP according between the STA and the 2nd STA link information, in the AP and the STA, the 2nd STA and the 3rd STA This Earth noise of the location information of link information, each STA, the local noise power of the AP, the STA between each STA The local noise power of power and the 2nd STA determine；

The sending module 510 is also used to send the location information of the STA to the AP, sends and closes to the AP in association process Join frame so that the AP determines the link information between the AP and the STA, discovery request is sent to the 2nd STA with rated power Frame；

The receiving module 520 is also used to receive the discovery response frame that the 2nd STA is sent with rated power；

The STA 500 further include:

The sending module 510 is also used to send the local noise power and the STA and the 2nd STA of the STA to the AP Between link information.

In embodiments of the present invention, optionally, which is specifically used for determining the discovery according to the discovery response frame The received signal power of response frame is determined according to the local noise power of the received signal power of the discovery response frame and the STA The received signal strength of the discovery response frame, according to the reception of specified the transmission power and the discovery response frame of the discovery response frame Signal strength determines the link information between the STA and the 2nd STA.

The method that STA 500 according to an embodiment of the present invention can correspond to direct point-to-point data link according to an embodiment of the present invention In the first STA, and above and other operation and/or function of the modules in STA 500 is aforementioned in order to realize respectively The corresponding process of each method, for sake of simplicity, details are not described herein.

The STA of the embodiment of the present invention, by using the AP direct point-to-point data link for making the STA and the 2nd STA determined and the The mutual interference of the transmission of three STA carries out direct point-to-point data link lower than the transmission power of the direct point-to-point data link of predetermined value, The direct point-to-point data link of the STA and the 2nd STA and the transmission of the 3rd STA can be made to carry out simultaneously, therefore frequency can be made full use of Spectrum resource, so as to promote network efficiency.

Fig. 6 shows the structure of the AP of another embodiment of the present invention offer, including at least one processor 602 (such as CPU), at least one network interface 605 or other communication interfaces, memory 606 and at least one communication bus 603, are used for Realize the connection communication between these components.Processor 602 is used to execute the executable module stored in memory 606, such as Computer program.Memory 606 may include high-speed random access memory (RAM:Random Access Memory), can also It can further include non-labile memory (non-volatile memory), for example, at least a magnetic disk storage.By at least One network interface 605 (can be wired or wireless) realizes the communication connection between at least one other network element.

In some embodiments, memory 606 stores program 6061, and processor 602 executes program 6061, for holding The following operation of row:

The direct point-to-point data link between the first STA and the 2nd STA that the first STA is sent is received by network interface 605 Transmission resource request；

According to the transmission resource request, the transfer resource of the direct point-to-point data link is determined；

Determine the direct point-to-point data link sends power and the transmission power of the 3rd STA, wherein the biography of the 3rd STA Defeated resource is Chong Die with the transfer resource of the direct point-to-point data link, the hair of the transmission power and the 3rd STA of the direct point-to-point data link The interference for sending power to keep the transmission of the direct point-to-point data link and the 3rd STA mutual is lower than predetermined value；

The first scheduling information, first scheduling information are sent to the first STA and the 2nd STA by network interface 605 It indicates the transfer resource of the direct point-to-point data link and the transmission power of the direct point-to-point data link, and sends second to the 3rd STA Scheduling information, second scheduling information indicate the transfer resource of the transmission power and the 3rd STA of the 3rd STA so that this One STA and the 2nd STA carries out direct point-to-point data link according to first scheduling information, and the 3rd STA believes according to second scheduling Breath sends data.

Optionally, processor 602 is also used to,

Determine the local noise power of the AP；

Being somebody's turn to do for each STA transmission in the first STA, the 2nd STA and the 3rd STA is received by network interface 605 The location information of each STA；

According to the disassociation frame that each STA is sent in association process, the link letter between the AP and each STA is determined Breath；

By network interface 605 receive the first STA send the first STA local noise power and this first Link information between STA and the 2nd STA receives the local noise power of the 2nd STA of the 2nd STA transmission；

Processor 602 be specifically used for according between the first STA and the 2nd STA link information, the AP and this each This Earth noise of the location information of link information, each STA, the local noise power of the AP, the first STA between STA The local noise power of power and the 2nd STA, determine the direct point-to-point data link sends power and the transmission of the 3rd STA Power.

Optionally, processor 602 is specifically used for,

According to the local noise power of link information, the first STA between the first STA and the 2nd STA and it is somebody's turn to do The local noise power of 2nd STA determines the transmission power of the direct point-to-point data link；

According to link information, the AP of the direct point-to-point data link sent between power, the first STA and the 2nd STA The location information of link information, each STA, the local noise power of the AP, the first STA between each STA The local noise power of local noise power and the 2nd STA determines the transmission power of the 3rd STA.

Optionally, processor 602 is specifically used for,

According to the local noise power of link information, the AP between the AP and the 3rd STA, determine the 3rd STA's Send power；

According to the link information of the 3rd STA sent between power, the first STA and the 2nd STA, the AP and this often It makes an uproar the local of the location information of link information, each STA, the local noise power of the AP, the first STA between a STA The local noise power of acoustical power and the 2nd STA determines the transmission power of the direct point-to-point data link.

Optionally, processor 602 is specifically used for,

According to the disassociation frame, the received signal power of the disassociation frame is determined；

According to the local noise power of the received signal power of the disassociation frame and the AP, the reception signal of the disassociation frame is determined Intensity；

According to the received signal strength of specified the transmission power and the disassociation frame of the disassociation frame, determine that the AP is each with this Link information between STA.

It can be seen that the embodiment of the present invention from above technical scheme provided in an embodiment of the present invention and pass through determining first STA With the transmission power of the transmission power and the 3rd STA of the direct point-to-point data link of the 2nd STA, make the direct point-to-point data link and the third The interference that the transmission of STA is mutual is lower than predetermined value, can make the direct point-to-point data link and third of the first STA and the 2nd STA The transmission of STA carries out simultaneously, so as to promote network efficiency.

Fig. 7 shows the structure of the STA of another embodiment of the present invention offer, including at least one processor 702 (such as CPU), at least one network interface 705 or other communication interfaces, memory 706 and at least one communication bus 703, are used for Realize the connection communication between these components.Processor 702 is used to execute the executable module stored in memory 706, such as Computer program.Memory 706 may include high-speed random access memory (RAM:Random Access Memory), can also It can further include non-labile memory (non-volatile memory), for example, at least a magnetic disk storage.By at least One network interface 705 (can be wired or wireless) realizes the communication connection between at least one other network element.

In some embodiments, memory 706 stores program 7061, and processor 702 executes program 7061, for holding The following operation of row:

It is asked by network interface 705 to the transfer resource that AP sends the direct point-to-point data link between the STA and the 2nd STA It asks；

The first scheduling information that the AP is sent is received by network interface 705, which indicates the direct chain The transfer resource of road communication and the transmission power of the direct point-to-point data link, wherein the transmission power of the direct point-to-point data link and the The transmission power of three STA is determined that the transfer resource of the 3rd STA is Chong Die with the transfer resource of the direct point-to-point data link by the AP, The transmission power of the direct point-to-point data link and the transmission power of the 3rd STA make the biography of the direct point-to-point data link He the 3rd STA Defeated mutual interference is lower than predetermined value；

On the transfer resource of the direct point-to-point data link using the direct point-to-point data link transmission power and the 2nd STA into Row direct point-to-point data link.

Optionally, the transmission power for sending power and the 3rd STA of the direct point-to-point data link by the AP according to the STA and The link between each STA in link information, the AP between 2nd STA and the STA, the 2nd STA and the 3rd STA Information, the location information of each STA, the local noise power of the AP, the local noise power of the STA and the 2nd STA Local noise power determine；

Processor 702 is also used to,

The location information of the STA is sent to the AP by network interface 705；

Send disassociation frame to the AP in association process by network interface 705 so that the AP determine the AP and the STA it Between link information；

Determine the local noise power of the STA；

Discovery claim frame is sent to the 2nd STA with rated power by network interface 705, receives the 2nd STA with volume Determine the discovery response frame of power transmission；

According to the discovery response frame, the link information between the STA and the 2nd STA is determined；

It is sent between the local noise power and the STA and the 2nd STA of the STA by network interface 705 to the AP Link information.

Optionally, processor 702 is specifically used for,

According to the discovery response frame, the received signal power of the discovery response frame is determined；

According to the local noise power of the received signal power of the discovery response frame and the STA, the discovery response frame is determined Received signal strength；

According to the received signal strength of specified the transmission power and the discovery response frame of the discovery response frame, the STA is determined And the 2nd link information between STA.

It can be seen that the embodiment of the present invention was determined by using AP from above technical scheme provided in an embodiment of the present invention The interference that the transmission of the direct point-to-point data link and the 3rd STA that make the first STA and the 2nd STA is mutual is direct lower than predetermined value The transmission power of link communication carries out direct point-to-point data link, can make the direct point-to-point data link and third of the first STA and the 2nd STA The transmission of STA carries out simultaneously, so as to promote network efficiency.

It should be understood that in embodiments of the present invention, term "and/or" is only a kind of incidence relation for describing affiliated partner, Indicate may exist three kinds of relationships.For example, A and/or B, can indicate: individualism A exists simultaneously A and B, individualism B this Three kinds of situations.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".

Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware With the interchangeability of software, each exemplary composition and step are generally described according to function in the above description.This A little functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Specially Industry technical staff can use different methods to achieve the described function each specific application, but this realization is not It is considered as beyond the scope of this invention.

It is apparent to those skilled in the art that for convenience of description and succinctly, foregoing description is The specific work process of system, device and unit, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components It can be combined or can be integrated into another system, or some features can be ignored or not executed.In addition, shown or beg for Opinion mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING of device or unit Or communication connection, it is also possible to electricity, mechanical or other form connections.

The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.Some or all of unit therein can be selected to realize the embodiment of the present invention according to the actual needs Purpose.

It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit It is that each unit physically exists alone, is also possible to two or more units and is integrated in one unit.It is above-mentioned integrated Unit both can take the form of hardware realization, can also realize in the form of software functional units.

If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words It embodies, which is stored in a storage medium, including some instructions are used so that a computer Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey The medium of sequence code.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right It is required that protection scope subject to.

Claims

1. a kind of access point AP characterized by comprising

Receiving module, the direct point-to-point data link between the first STA and the 2nd STA for receiving the transmission of the first site STA Transmission resource request；

Determining module for determining the transfer resource of the direct point-to-point data link according to the transmission resource request, and determines The transmission power for sending power and the 3rd STA of the direct point-to-point data link, wherein the transfer resource of the 3rd STA with The transfer resource of the direct point-to-point data link is overlapped, the transmission of the transmission power and the 3rd STA of the direct point-to-point data link The interference that power keeps the transmission of the direct point-to-point data link and the 3rd STA mutual is lower than predetermined value；

Sending module, for sending the first scheduling information, first scheduling information to the first STA and the 2nd STA It indicates the transfer resource of the direct point-to-point data link and the transmission power of the direct point-to-point data link, and is sent out to the 3rd STA The second scheduling information is sent, second scheduling information indicates that the 3rd STA's sends power and the transmission money of the 3rd STA Source, so that the first STA and the 2nd STA carries out direct point-to-point data link, the third according to first scheduling information STA sends data according to second scheduling information；

The determining module be specifically used for according between the first STA and the 2nd STA link information, described first The local noise power of the local noise power of STA and the 2nd STA determines the transmission function of the direct point-to-point data link Rate, according to the link information of the direct point-to-point data link sent between power, the first STA and the 2nd STA, described The local noise power, described of the location information of link information, each STA between AP and each STA, the AP The local noise power of the local noise power of first STA and the 2nd STA determines the transmission power of the 3rd STA； Or

The determining module is specifically used for being made an uproar according to the local of link information, the AP between the AP and the 3rd STA Acoustical power determines the transmission power of the 3rd STA, according to the transmission power of the 3rd STA, the first STA and described Believe the position of the link information between link information, the AP and each STA, each STA between 2nd STA Breath, the local noise power of the AP, the local noise power of the first STA and this Earth noise function of the 2nd STA Rate determines the transmission power of the direct point-to-point data link.

2. AP according to claim 1, which is characterized in that

The receiving module is also used to receive the transmission of each STA in the first STA, the 2nd STA and the 3rd STA Each STA location information, receive local noise power and the institute of the first STA that the first STA is sent The link information between the first STA and the 2nd STA is stated, the local for receiving the 2nd STA that the 2nd STA is sent is made an uproar Acoustical power；

The determining module is also used to determine the local noise power of the AP, is sent out in association process according to each STA The disassociation frame sent determines the link information between the AP and each STA.

3. AP according to claim 2, which is characterized in that the determining module is specifically used for being determined according to the disassociation frame The received signal power of the disassociation frame, the local noise power according to the received signal power of the disassociation frame and the AP are true The received signal strength of the fixed disassociation frame, according to the specified transmission power of the disassociation frame and the reception signal of the disassociation frame Intensity determines the link information between the AP and each STA.

4. a kind of site STA characterized by comprising

Sending module, the transfer resource for sending the direct point-to-point data link between the STA and the 2nd STA to access point AP are asked It asks；

Receiving module, the first scheduling information sent for receiving the AP, first scheduling information indicate the direct chain The transfer resource of road communication and the transmission power of the direct point-to-point data link, wherein the transmission power of the direct point-to-point data link It is determined with the transmission power of the 3rd STA by the AP, the transfer resource of the 3rd STA and the transmission of the direct point-to-point data link Resource overlapping, the transmission power of the direct point-to-point data link and the transmission power of the 3rd STA make the direct point-to-point data link It is lower than predetermined value with the mutual interference of the transmission of the 3rd STA；

Operation module, for using the transmission power of the direct point-to-point data link on the transfer resource of the direct point-to-point data link Direct point-to-point data link is carried out with the 2nd STA,

Wherein, the transmission power of the direct point-to-point data link is by the AP according between the first STA and the 2nd STA Link information, the first STA local noise power and the 2nd STA local noise power determine, it is described The transmission power of 3rd STA is by the AP according to the transmission power of the direct point-to-point data link, the first STA and described The location information of the link information between link information, the AP and each STA, each STA between two STA, The local noise power of the local noise power of the AP, the local noise power of the first STA and the 2nd STA is true Fixed, or

The transmission power of 3rd STA is by the AP according to the link information, described between the AP and the 3rd STA What the local noise power of AP determined, the transmission power of the direct point-to-point data link is transmission power by the 3rd STA, institute State link information between link information, the AP and each STA between the first STA and the 2nd STA, described every The location information of a STA, the local noise power of the AP, the local noise power of the first STA and the 2nd STA Local noise power determine.

5. STA according to claim 4, which is characterized in that the sending module is also used to send the STA to the AP Location information, in association process to the AP send disassociation frame so that the AP is determined between the AP and the STA Link information sends discovery claim frame to the 2nd STA with rated power；

The STA further include:

Determining module determines the STA and institute according to the discovery response frame for determining the local noise power of the STA State the link information between the 2nd STA；

The sending module is also used to send the local noise power and the STA and described second of the STA to the AP Link information between STA.

6. STA according to claim 5, which is characterized in that the determining module is specifically used for being responded according to the discovery Frame determines the received signal power of the discovery response frame, according to the received signal power and the STA of the discovery response frame Local noise power determine it is described discovery response frame received signal strength, according to it is described discovery response frame specified transmission function The received signal strength of rate and the discovery response frame determines the link information between the STA and the 2nd STA.

7. a kind of method of direct point-to-point data link characterized by comprising

Access point AP receives the transmission of the direct point-to-point data link between the first STA and the 2nd STA that the first site STA is sent Resource request；

The AP determines the transmission power of the direct point-to-point data link and the transmission power of the 3rd STA, wherein the third The transfer resource of STA is Chong Die with the transfer resource of the direct point-to-point data link, the transmission power of the direct point-to-point data link and institute The interference that the transmission power for stating the 3rd STA keeps the transmission of the direct point-to-point data link and the 3rd STA mutual is lower than pre- Definite value；

The AP sends the first scheduling information to the first STA and the 2nd STA, described in the first scheduling information instruction The transmission power of the transfer resource of direct point-to-point data link and the direct point-to-point data link, and send second to the 3rd STA and adjust Information is spent, second scheduling information indicates the transfer resource of the transmission power and the 3rd STA of the 3rd STA, so that First STA and the 2nd STA according to first scheduling information carry out direct point-to-point data link, the 3rd STA according to Second scheduling information sends data；

Wherein, the AP determines the transmission power of the direct point-to-point data link and the transmission power of the 3rd STA, comprising:

The AP is according to this Earth noise function of link information, the first STA between the first STA and the 2nd STA The local noise power of rate and the 2nd STA determines the transmission power of the direct point-to-point data link；

The AP believes according to the link of the direct point-to-point data link sent between power, the first STA and the 2nd STA It ceases, this Earth noise function of the location information of the link information between the AP and each STA, each STA, the AP The local noise power of rate, the local noise power of the first STA and the 2nd STA determines the hair of the 3rd STA Send power；Or

The AP according to the local noise power of link information, the AP between the AP and the 3rd STA, determine described in The transmission power of 3rd STA；

The AP is according to the link information of the 3rd STA sent between power, the first STA and the 2nd STA, institute State link information, the location information of each STA, the local noise power of the AP, institute between AP and each STA The local noise power of the first STA and the local noise power of the 2nd STA are stated, determines the hair of the direct point-to-point data link Send power.

8. the method according to the description of claim 7 is characterized in that determining the transmission function of the direct point-to-point data link in the AP Before the transmission power of rate and the 3rd STA, the method also includes:

The AP determines the local noise power of the AP；

The AP receives the described each of the transmission of each STA in the first STA, the 2nd STA and the 3rd STA The location information of STA；

The disassociation frame that the AP is sent in association process according to each STA determines between the AP and each STA Link information；

The AP receives the local noise power and the first STA and described for the first STA that the first STA is sent Link information between 2nd STA receives the local noise power for the 2nd STA that the 2nd STA is sent.

9. according to the method described in claim 8, it is characterized in that, the AP is sent out in association process according to each STA The disassociation frame sent determines the link information between the AP and each STA, comprising:

The AP determines the disassociation frame according to the received signal power of the disassociation frame and the local noise power of the AP Received signal strength；

The AP according to the received signal strength of specified the transmission power and the disassociation frame of the disassociation frame, determine the AP with Link information between each STA.

10. a kind of method of direct point-to-point data link characterized by comprising

First site STA sends the transfer resource of the direct point-to-point data link between the first STA and the 2nd STA to access point AP Request；

First STA receives the first scheduling information that the AP is sent, and first scheduling information indicates the direct link The transmission power of the transfer resource of communication and the direct point-to-point data link, wherein the transmission power of the direct point-to-point data link and The transmission power of 3rd STA is determined that the transfer resource of the 3rd STA and the transmission of the direct point-to-point data link are provided by the AP Source overlapping, the transmissions power of the direct point-to-point data link and the transmission power of the 3rd STA make the direct point-to-point data link with The interference that the transmission of 3rd STA is mutual is lower than predetermined value；

First STA on the transfer resource of the direct point-to-point data link using the direct point-to-point data link transmission power with 2nd STA carries out direct point-to-point data link,

11. according to the method described in claim 10, it is characterized in that,

The biography of the direct point-to-point data link between the first STA and the 2nd STA is sent to access point AP in first site STA Before defeated resource request, the method also includes:

First STA sends the location information of the first STA to the AP；

First STA sends disassociation frame to the AP in association process, so that the AP determines the AP and described first Link information between STA；

First STA determines the local noise power of the first STA；

First STA sends discovery claim frame to the 2nd STA with rated power, receives the 2nd STA with specified function The discovery response frame that rate is sent；

First STA to the AP send the first STA local noise power and the first STA and described second Link information between STA.

12. according to the method for claim 11, which is characterized in that the first STA is determined according to the discovery response frame Link information between first STA and the 2nd STA, comprising:

First STA is according to the received signal power of the discovery response frame and the local noise power of the first STA, really The received signal strength of the fixed discovery response frame；

First STA is strong according to the specified transmission power of the discovery response frame and the reception signal of the discovery response frame Degree, determines the link information between the first STA and the 2nd STA.