CN103402270A - Low-frequency band and low-power consumption wireless local area network station to station (STS) communication method - Google Patents
Low-frequency band and low-power consumption wireless local area network station to station (STS) communication method Download PDFInfo
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- CN103402270A CN103402270A CN2013102876665A CN201310287666A CN103402270A CN 103402270 A CN103402270 A CN 103402270A CN 2013102876665 A CN2013102876665 A CN 2013102876665A CN 201310287666 A CN201310287666 A CN 201310287666A CN 103402270 A CN103402270 A CN 103402270A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a low-frequency band and low-power consumption wireless local area network station to station (STS) communication method. The method comprises steps of transmitting a data or communication request through one access point of two communication stations; (2) after the access point receives the data or a communication request, judging whether the two stations satisfy STS communication conditions, and if the STS communication conditions are satisfied, transmitting requests for building STS communication to the two stations; and (3) after the two stations received the requests, completing an STS communication mode. According to the method, a plurality of STS communication pairs are allowed to be existed in a network, so that the network capacity is effectively improved, and the transmission delay is reduced.
Description
Technical field
The invention belongs to network communications technology field, particularly a kind of site-to-site communication means that direct transfers in low-frequency range low-consumption wireless local area network (LAN), be mainly used in improving network capacity, throughput, reduces the website energy consumption, reduces propagation delay time.
Background technology
WLAN (wireless local area network) based on the IEEE802.11 standard allows to use 2.4 or 5.8GHz radio-frequency range in the industrial technology medical treatment ISM band that can authorize to carry out wireless connections in LAN environment.Mainly contain two kinds of group-network constructions, a class has static infrastructure, and is another kind of without static infrastructure.There is the wireless local area of static infrastructure to be widely used, from the family to the enterprise, to Internet, access focus again.
The communication of any two websites all will be through the forwarding of access point AP in the WLAN (wireless local area network) of static infrastructure is arranged, and its process is as follows:
(1) side's competitive channel of communicating pair, obtaining to send the data to access point AP after the channel right to use;
(2) access point AP competitive channel again, send to the opposing party in the data that obtain will receive after the channel right to use.
The advantage of this mode has been to realize the communication of two websites in LAN environment, but following defect is arranged:
(1) each communication all will, through the forwarding of access point AP, increase propagation delay time;
(2) need twice competitive channel, increased the competition time delay;
(3) each can only have at most a link constantly in communication, and network capacity is less;
(4) when website was far away apart from access point AP, throughput was little, and power consumption is large.
Low-frequency range low-consumption wireless local area network (LAN) is being studied by current I EEE TGah working group, and its requirement works in the following frequency range of 1GHz, and single-hop coverage distance maximum can reach 1Km, supports 6000 websites.The above-mentioned shortcoming of prior art makes it can't meet this requirement.
Summary of the invention
The present invention seeks to for above-mentioned the deficiencies in the prior art, propose STS(Station To Station in a kind of low-frequency range low-consumption wireless local area network (LAN)) communication means, to improve network capacity, throughput, reduce the website energy consumption, reduce propagation delay time.
The technical thought that realizes the object of the invention is: when two websites will be communicated by letter, access point AP judged according to the distance between two websites and channel conditions whether these two websites meet the condition that STS communicates by letter, if meet, to two site requests, set up STS communication.
To achieve these goals, the technical solution used in the present invention is as follows:
In a kind of low-frequency range low-consumption wireless local area network (LAN), the communication means of STS, have access point in described WLAN (wireless local area network), and the first website of at least one pair of communication and the second website, said method comprising the steps of:
(1) described the first website sends data to described the second website;
(2) described the first website sends a direct communication claim frame to described access point;
(3) after described access point is received described direct communication claim frame, judge whether described the first website and described the second website can carry out STS and communicate by letter, wherein, if can carrying out STS with described the second website, described the first website communicates by letter, described access point sends a direct communication allowance frame to described the first website and described the second website, and enters step (5); Otherwise, send one and permit sending frame to described the first website, and enter step (4);
(4) after described first stop point receives that described allowance sends frame, data are transmitted to described the second website by described access point;
(5) described first stop point is done the preparation that sends data after receiving direct communication allowance frame, and described second station point is done the preparation of reception data after receiving direct communication allowance frame;
(6) the described first stop data of naming a person for a particular job are sent to described the second website, and then described the second website sends acknowledgement frame to described the first website.
It should be noted that, described direct communication claim frame comprises receiver address, sends address and destination address, and wherein, described receiver address is the address of access point, and described transmission address is the address of described the first website, and described destination address is the address of the second website.
It should be noted that, described access point judges whether described the first website and described the second website can carry out STS and communicate by letter, and comprise the following steps:
(1) whether described the first website of described access point check supports that with described the second website STS communicates by letter, if described the first website and described the second website all support, enter step (2); Otherwise enter step (3);
(2) whether described the first website of check allows STS to communicate by letter with the distance between described the second website with channel conditions, as meets, and enters step (4); Otherwise enter step (3);
(3) described the first website does not support that with described the second website STS communicates by letter;
(4) described the first website supports that with described the second website STS communicates by letter.
It should be noted that, described direct communication is permitted frame and is comprised receiver address 1 and receiver address 2, wherein, in described receiver address 1, is the address of described the first website, in described receiver address 2, is the address of described the second website.
It should be noted that, the described described first stop data of naming a person for a particular job are transmitted to described the second website by described access point, comprise the following steps:
(1) the described first stop data of naming a person for a particular job are sent to described access point;
(2), after described access point is received data, send acknowledgement frame to described the first website;
(3) described access point competitive channel obtain the channel right to use;
(4), after described access point obtains the channel right to use, send request and send frame to described the second website;
(5), after described second station point receives that described request sends frame, send and permit sending frame to described access point;
(6) after described access point received that described allowance sends frame, the data of receiving in forwarding step (2) were to described the second website;
(7), after described second station point is received data, send acknowledgement frame to described access point.
Beneficial effect of the present invention is:
1, at the first website, after access point reservation channel, directly send the data to the second website, rather than forward by access point, this has reduced transmission time and stand-by period, thereby has reduced propagation delay time;
2, by introducing STS communication, in network, can there is the website communication more than 2 pairs or 2 pairs, thereby improve network capacity;
3, when the distance between two websites that have data to transmit, during than the near distance between these two websites and access point, adopt STS communication can improve message transmission rate, reduce transmitting power, thereby improve network throughput, save the website energy.
The accompanying drawing explanation
Fig. 1 is workflow diagram of the present invention;
Fig. 2 is an application scenarios of the present invention;
Fig. 3 is the frame exchange process of prior art to Fig. 2 application scenarios;
Fig. 4 is the frame exchange process in Fig. 2.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
The present invention for convenience of description, do following the simplification:
Access point is: AP;
The first website is: STA1;
The second website is STA2:;
The direct communication claim frame is: eRTS;
Frame is permitted in direct communication: eCTS;
Request sends frame: RTS;
Permitting sending frame is: CTS;
Acknowledgement frame is: ACK;
As described in Figure 1, concrete steps of the present invention are as follows:
Step 1, site STA 1 sends a frame eRTS to access point AP;
Wherein, STA1 writes the address of the address of the address of AP, STA1 and STA2 respectively in receiver address, transmission address and the destination address of incoming frame eRTS in order; Then eRTS is sent to AP.
Step 2, receive the AP of eRTS judges whether STA1 and STA2 can carry out STS and communicate by letter, comprising:
(2a) whether AP check STA1 supports that with STA2 STS communicates by letter, if STA1 and STA2 all support, enter step (2b), otherwise enter step (2c);
(2b) whether check STA1 allows STS to communicate by letter with the distance between STA2 with channel conditions, if condition meets, enters step (2d), otherwise enters step (2c);
(2c) STA1 does not support that with STA2 STS communicates by letter, and AP sends a frame CTS to STA1 and enters step 3;
(2d) STA1 supports that with STA2 STS communicates by letter, and AP sends a frame eCTS to STA1 and STA2 and enters step 4.
Step 3, receive that the STA1 of CTS is transmitted to STA2 by data by AP, comprising:
(3a) STA1 sends the data to AP;
(3b) receive that the AP transmission frame ACK of data is to STA1;
(3c) AP competitive channel obtain the channel right to use;
(3d) obtain the usufructuary AP of channel and send frame RTS to STA2;
(3e) receive that the STA2 transmission frame CTS of RTS is to AP;
(3f) receive that the data received in the AP forwarding step (4b) of CTS are to STA2;
(3g) receive that the STA2 transmission frame ACK of data is to AP.
Step 4, receive that the STA1 of eCTS sends the data to STA2, comprising:
(4a) STA1 that receives eCTS does the preparation of transmission data, receives that the STA2 of eCTS does the preparation of reception data;
(4b) STA1 sends the data to STA2, and then STA2 sends frame ACK to STA1.
Effect of the present invention can further illustrate by accompanying drawing:
As shown in Figure 2, in the WLAN (wireless local area network) with an access point AP and two websites, site STA 1 will be transmitted data to STA2.
As shown in Figure 3, for the scene in Fig. 2, adopt existing wireless LAN communication mode, the frame exchange process of site STA 1 and STA2.
As shown in Figure 4, for the scene in Fig. 2, adopt STS communication means of the present invention, the frame exchange process of site STA 1 and STA2.
By comparison diagram 3, with Fig. 4, can obtain, the present invention has reduced frame exchange times and the stand-by period in STA1 and STA2 data transmission procedure, thereby has reduced the propagation delay time of STA1 and STA2.
For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and the distortion all should belong to the protection range of the claims in the present invention within.
Claims (5)
1. the communication means of STS in a low-frequency range low-consumption wireless local area network (LAN), have access point in described WLAN (wireless local area network), and the first website of at least one pair of communication and the second website, it is characterized in that, said method comprising the steps of:
(1) described the first website sends data to described the second website;
(2) described the first website sends a direct communication claim frame to described access point;
(3) after described access point is received described direct communication claim frame, judge whether described the first website and described the second website can carry out STS and communicate by letter, wherein, if can carrying out STS with described the second website, described the first website communicates by letter, described access point sends a direct communication allowance frame to described the first website and described the second website, and enters step (5); Otherwise, send one and permit sending frame to described the first website, and enter step (4);
(4) after described first stop point receives that described allowance sends frame, data are transmitted to described the second website by described access point;
(5) described first stop point is done the preparation that sends data after receiving direct communication allowance frame, and described second station point is done the preparation of reception data after receiving direct communication allowance frame;
(6) the described first stop data of naming a person for a particular job are sent to described the second website, and then described the second website sends acknowledgement frame to described the first website.
2. communication means according to claim 1, it is characterized in that, described direct communication claim frame comprises receiver address, sends address and destination address, wherein, described receiver address is the address of access point, described transmission address is the address of described the first website, and described destination address is the address of the second website.
3. communication means according to claim 1, is characterized in that, described access point judges whether described the first website and described the second website can carry out STS and communicate by letter, and comprise the following steps:
(1) whether described the first website of described access point check supports that with described the second website STS communicates by letter, if described the first website and described the second website all support, enter step (2); Otherwise enter step (3);
(2) whether described the first website of check allows STS to communicate by letter with the distance between described the second website with channel conditions, as meets, and enters step (4); Otherwise enter step (3);
(3) described the first website does not support that with described the second website STS communicates by letter;
(4) described the first website supports that with described the second website STS communicates by letter.
4. communication means according to claim 1, it is characterized in that, described direct communication is permitted frame and is comprised receiver address 1 and receiver address 2, wherein, in described receiver address 1, being the address of described the first website, is the address of described the second website in described receiver address 2.
5. communication means according to claim 1, is characterized in that, the described described first stop data of naming a person for a particular job are transmitted to described the second website by described access point, comprise the following steps:
(1) the described first stop data of naming a person for a particular job are sent to described access point;
(2), after described access point is received data, send acknowledgement frame to described the first website;
(3) described access point competitive channel obtain the channel right to use;
(4), after described access point obtains the channel right to use, send request and send frame to described the second website;
(5), after described second station point receives that described request sends frame, send and permit sending frame to described access point;
(6) after described access point received that described allowance sends frame, the data of receiving in forwarding step (2) were to described the second website;
(7), after described second station point is received data, send acknowledgement frame to described access point.
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| CN2013102876665A CN103402270A (en) | 2013-07-09 | 2013-07-09 | Low-frequency band and low-power consumption wireless local area network station to station (STS) communication method |
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| CN101572935A (en) * | 2008-04-28 | 2009-11-04 | 索尼株式会社 | Wireless communication system, wireless communication apparatus, wireless communication method, and program |
| CN102665213A (en) * | 2012-04-05 | 2012-09-12 | 中国联合网络通信集团有限公司 | Data direct connection processing method, equipment and system thereof |
| CN102695292A (en) * | 2009-08-21 | 2012-09-26 | 捷讯研究有限公司 | System and method for mobile network inter-device communications |
| CN103026741A (en) * | 2010-05-17 | 2013-04-03 | 高通股份有限公司 | Methods and apparatuses for discovery of the capabilities of wlan stations for direct link setup |
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- 2013-07-09 CN CN2013102876665A patent/CN103402270A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572935A (en) * | 2008-04-28 | 2009-11-04 | 索尼株式会社 | Wireless communication system, wireless communication apparatus, wireless communication method, and program |
| CN102695292A (en) * | 2009-08-21 | 2012-09-26 | 捷讯研究有限公司 | System and method for mobile network inter-device communications |
| CN103026741A (en) * | 2010-05-17 | 2013-04-03 | 高通股份有限公司 | Methods and apparatuses for discovery of the capabilities of wlan stations for direct link setup |
| CN102665213A (en) * | 2012-04-05 | 2012-09-12 | 中国联合网络通信集团有限公司 | Data direct connection processing method, equipment and system thereof |
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