CN101820304A - Data transmission method and system in wireless fidelity network - Google Patents
Data transmission method and system in wireless fidelity network Download PDFInfo
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- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
- H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
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Abstract
The invention discloses a data transmission method in a WiFi network, which comprises the following step: when data transmission is carried out, sending data information comprising identity authentication information to a corresponding terminal user according to a WiFi network confirmed by the identity authentication information. Meantime, the invention also discloses a data transmission system in the WiFi network. The method and system of the invention can effectively avoid collision in the WiFi network, and can solve the problem of avoiding data collision depending on increasing interframe space in the working process of a CSMA/CA protocol, thereby improving the interactive efficiency between a network side and a user terminal.
Description
Technical field
The present invention relates to Wireless Fidelity (WiFi, Wireless Fidelity) network technology, relate in particular to a kind of method and system of WiFi data transmission in network.
Background technology
The WiFi network is one of mainstream standard of present WLAN (wireless local area network).It is identical with blueteeth network, belongs to the short range wireless transmission technology that can use in office and family.WiFi compares with Bluetooth technology, has the following advantages:
At first, the wide coverage of WiFi network.Electric wave coverage based on Bluetooth technology is very little, and radius approximately has only about 50 feet, is roughly equal to 15 meters, and the radius of WiFi technology then can reach about 300 feet, is roughly equal to 100 meters, and therefore, the WiFi network all can use in the scope in whole building.And the new recently a kind of novel switch of releasing can expand the communication distance of present WiFi network to 4 miles, is roughly equal to 6.5 kilometers.
Secondly, the transmission speed of WiFi network is very fast.In the 802.11g standard, transmission speed can reach 54Mbps, meets the demand of individual and social informatization fully.
At last, manufacturer to enter the threshold in this field lower.The comparatively intensive places of personnel such as manufacturer only need be on the airport, station, cafe and library are provided with " focus ", and by high-speed line the internet are inserted above-mentioned place, and here, focus is meant the place that can offer wireless internet services.So, because the electric wave that " focus " launched can reach apart from the place of the tens of rice of access point radius to 100 meters, as long as the user will support WLAN (wireless local area network) (LAN, Local Area Network) notebook computer or personal digital assistant (PDA, Personal Digital Assistant) takes in this zone, can enter the Internet at a high speed.That is to say that manufacturer need not expend fund and carry out the network layout access, thereby has saved a large amount of costs.
Yet, medium access control (the MAC of WiFi network, Media Access Control) there is a very important problem in layer, that is: the conflict collision problem of visiting when sharing two WiFi networks, concretely, in the public local area networks scope of two WiFi networks, there are two WiFi networks, do not set up relation one to one owing to be positioned at the mobile site and the WiFi network of public local area networks scope, therefore, when in the public local area networks scope of two WiFi networks, carrying out the transfer of data of a plurality of mobile sites, the data that a plurality of mobile sites send might take same WiFi network, thereby produce the conflict collision problem of transfer of data.Problem for the collision that manages conflict, therefore, in the standard of IEEE 802.11MAC, each mobile node adopts Carrier Sense Multiple Access/collision to avoid (CSMA/CA, Carrier Sense Multiple Access withCollision Avoidance) machine-processed competitive channel, its acquiescence mode of operation is distributed coordination function (DCF, Distributed Coordination Function).Determine by DCF when the mobile site in the basic service unit can send or receive data.Fig. 1 is the schematic flow sheet of CSMA/CA agreement work in the prior art, as can be seen from the figure, for the collision that avoids conflict as far as possible, all mobile sites are after finishing transmission, could send next frame after must waiting for a period of time, be called interFrameGap (IFS, Inter Frame Space) during this period of time.Wherein, the length of interFrameGap depends on the type of the frame that this website plan sends.The time that high priority frame need be waited for is shorter, can preferentially obtain transmission route, and lower priority frame must be waited for the long time.The high priority frame of other mobile sites has sent to the MAC layer of WiFi network if lower priority frame does not also have enough time to send, at this moment, medium become busy condition, and lower priority frame is then postponed again and being sent, thereby realize reducing the purpose that clashes collision opportunity.Described mobile site is the terminal use.
In the such scheme, there is a very significantly problem, that is: for the collision that avoids conflict as far as possible, just must increase the time of interFrameGap, so handle, can make lower priority frame must wait for that the long period just can send to the purpose website, and then cause the network processes decrease in efficiency.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and system of WiFi data transmission in network, realizes the defective of collision that avoids conflict to solve the available technology adopting interFrameGap, and then improves the treatment effeciency of network.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method of WiFi data transmission in network, comprising:
When carrying out transfer of data, the WiFi network of confirming according to the identify label authentication information sends the data message that comprises the identify label authentication information to the counterpart terminal user.
In the such scheme, described carrying out further comprises before the transfer of data:
The terminal use sends the identify label authentication information to each WiFi network after confirming to be in the public local area networks scope of a plurality of WiFi networks, confirms employed WiFi network.
In the such scheme, described terminal use confirms to be in the public local area networks scope of a plurality of WiFi networks, comprising:
Whether the terminal use enters after the WiFi network, be in the public local area networks scope of a plurality of WiFi networks based on Carrier Sense Multiple Access/collision detection (CSMA/CD) protocol detection.
In the such scheme, the employed WiFi network of described affirmation comprises:
Based on the CSMA/CD agreement, the WiFi network that obtains the identify label authentication information earlier will be confirmed certainly as the employed WiFi network of this terminal use;
Described WiFi network sends the identify label authentication information to this terminal use, and this terminal use confirms employed WiFi network in view of the above.
In the such scheme, described WiFi network sends the data message that comprises the identify label authentication information to the counterpart terminal user, comprising:
The WiFi network of confirming according to the identify label authentication information sends the data message that comprises the identify label authentication information to the terminal use;
The terminal use judges whether the identify label authentication information that receives is the identify label authentication information that connected WiFi network sends to this terminal use, if, it is mutual that then the coupled WiFi network of this terminal use carries out data message, otherwise, this terminal use keeps existing state, does not carry out any operation.
In the such scheme, described identify label authentication information comprises: authentication function sign, authentication function content and authentication function sign direction;
Whether the identify label authentication information that described judgement receives is the identify label authentication information that connected WiFi network sends to this terminal use, be specially: to the authentication function sign in the identify label authentication information, the authentication function content, and the content of the shared frame of authentication function sign direction is discerned respectively, the authentication function sign that receives, and the content of the shared frame of authentication function sign direction is identical with the content of the corresponding frame of terminal use's preservation, think that then the identify label authentication information that receives is the identify label authentication information that connected WiFi network sends to this terminal use, otherwise, think that the identify label authentication information that receives is not the identify label authentication information that connected WiFi network sends to this terminal use.
The present invention also provides a kind of system of WiFi data transmission in network, comprising:
Confirm employed WiFi network according to the identify label authentication information, be used to send comprise the identify label authentication information data message to the counterpart terminal user.
In the such scheme, described terminal use also is used for: after confirming to be in the public local area networks scope of a plurality of WiFi networks, send the identify label authentication information to each WiFi network, and and the employed WiFi network of WiFi network validation.
In the such scheme, the described and employed WiFi network of WiFi network validation specifically comprises:
Based on the CSMA/CD agreement, the WiFi network validation that obtains the identify label authentication information earlier is certainly as the employed WiFi network of this terminal use;
Described WiFi network sends the identify label authentication information to this terminal use, and this terminal use confirms employed WiFi network in view of the above.
In the such scheme, described terminal use also is used for: judge whether the identify label authentication information that receives is the identify label authentication information that connected WiFi network sends to this terminal use, after being confirmed to be the identify label authentication information that connected WiFi network sends to this terminal use, carry out the mutual operation of data message with the WiFi network.
The method and system of WiFi data transmission in network provided by the present invention, each terminal use sends an identify label authentication information to the WiFi network side that is connected, after the WiFi network receives this identify label authentication information, the WiFi network of confirming according to the identify label authentication information sends the data message that comprises the identify label authentication information to the counterpart terminal user, when data message transmits in the public local area networks scope of two WiFi networks, owing to confirmed the WiFi network that uses according to the identify label authentication information, therefore, each terminal use's data message all can transmit under each self-corresponding WiFi network, so, can effectively avoid the conflict collision in the WiFi network, can solve to rely in the CSMA/CA agreement course of work increases the problem that interFrameGap is avoided the data collision collision, thereby has improved network side and the mutual efficient of terminal use.
Description of drawings
Fig. 1 is the schematic flow sheet of CSMA/CA agreement work in the prior art;
Fig. 2 realizes the schematic flow sheet of the specific embodiment of WiFi data transmission in network for the present invention;
Fig. 3 is for realizing the method flow schematic diagram of step 202 in the flow process shown in Figure 2;
Fig. 4 is the composition structural representation of WiFi data transmission in network of the present invention system.
Embodiment
Basic thought of the present invention is: when carrying out transfer of data, the WiFi network of confirming according to the identify label authentication information sends the data message that comprises the identify label authentication information to the counterpart terminal user.
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
The implementation method of the specific embodiment of WiFi data transmission in network of the present invention may further comprise the steps as shown in Figure 2:
Step 201: the terminal use sends the identify label authentication information to each WiFi network after confirming to be in the public local area networks scope of a plurality of WiFi networks, confirms employed WiFi network;
Here, the identify label authentication information comprises: authentication function sign, authentication function content and authentication function sign direction; Authentication function sign, authentication function content and authentication function sign direction respectively account for a frame;
Wherein, the authentication function sign is used to show terminal use's identity; The authentication function content is used to show that the terminal use has the data message that sends to the WiFi network; Authentication function sign direction is used to show to be the data message that the terminal use sends to the WiFi network;
Sending the identify label authentication information realizes in the WiFi network;
Confirm that employed WiFi network is specially:
The terminal use is after each WiFi network sends the identify label authentication information, based on Carrier Sense Multiple Access/collision detection (CSMA/CD, Carrier Sense Multiple Access with Collision Detection) agreement, the WiFi network that obtains the identify label authentication information earlier will be confirmed to have set up the corresponding relation between this WiFi network and the terminal use thus from as the employed WiFi network of this terminal use; And owing to have information interaction between a plurality of WiFi networks, the corresponding relation that this WiFi network can notify other WiFi network to set up, other WiFi network then can to carry out data message not mutual with this terminal use after receiving that this WiFi network and this terminal use have set up the information of corresponding relation;
The WiFi network that obtains the identify label authentication information earlier sends the identify label authentication information to this terminal use, and this terminal use confirms employed WiFi network in view of the above;
Different meetings with terminal use's interaction data information change the content of the shared frame of identify label authentication information according to the WiFi network, concretely, WiFi network authentication function sign in the identify label authentication information that the terminal use sends is used to show the identity of WiFi network, the authentication function content is used to show that the WiFi network has the data message that sends to the terminal use, when the terminal use confirms the initialization of employed WiFi network, terminal use and WiFi network can joint provisions this moment data message content be 0, authentication function sign direction is used to show to be the data message that the WiFi network sends to the terminal use; The terminal use sends the identity that authentication function sign in the data message comprise the identify label authentication information is used to show the terminal use to the WiFi network, the authentication function content is used to show that the terminal use has the data message that sends to the WiFi network, and authentication function sign direction is used to show to be the data message that the terminal use sends to the WiFi network;
Step 202: when carrying out transfer of data, the WiFi network of confirming according to the identify label authentication information sends the data message that comprises the identify label authentication information to the counterpart terminal user, realizes with each terminal use's data message mutual;
Here, after the WiFi network receives the identify label authentication information, just confirmed that the terminal use corresponding with the identify label authentication information carries out data message employed WiFi network when mutual, other WiFi networks just can to carry out data message not mutual with this terminal use;
When data message transmits in the public local area networks scope of two WiFi networks, owing to confirmed employed WiFi network according to the identify label authentication information, therefore, each data message all can transmit under each self-corresponding WiFi network, be that the terminal use sends to the WiFi network of being confirmed with data message or the WiFi network of confirming according to the identify label authentication information sends to the counterpart terminal user with data message, thereby avoided the generation of conflict collision problem;
The clooating sequence that WiFi network and each terminal use have identical authentication function flag information, authentication function content information and authentication function sign directional information.
In the said process, the terminal use confirms to be in the public local area networks scope of a plurality of WiFi networks and comprises: the terminal use enters after the WiFi network, whether be in based on the CSMA/CD protocol detection in the public local area networks scope of a plurality of WiFi networks, if, then send the identify label authentication information to each WiFi network, confirm employed WiFi network, otherwise, be left intact;
Detect in the public local area networks scope that whether is in a plurality of WiFi networks and be specially: the terminal use sends the request of networking to the WiFi network, self whether be in according to the CSMA/CD technology for detection in IEEE 802.11 agreements in the public local area networks scope of a plurality of WiFi networks, for example, if the terminal use receives the networking response that a plurality of WiFi networks return, show that then this terminal use is in the public local area networks scope of a plurality of WiFi networks.
In the said process, the concrete processing of step 202 may further comprise the steps as shown in Figure 3:
Step 301: when carrying out transfer of data, the WiFi network of confirming according to the identify label authentication information sends the data message that comprises the identify label authentication information to the terminal use.
Step 302: the terminal use judges whether the identify label authentication information that receives is the identify label authentication information that connected WiFi network sends to this terminal use, if, then execution in step 303, otherwise, this terminal use keeps existing state, do not carry out any operation, finish current handling process;
Here, judge whether the identify label authentication information that receives is the identify label authentication information that connected WiFi network sends to this terminal use, be specially: to the authentication function sign in the identify label authentication information, the authentication function content, and the content of the shared frame of authentication function sign direction is discerned respectively, the authentication function sign that receives, and the content of the shared frame of authentication function sign direction is identical with the content of the corresponding frame of terminal use's preservation, think that then the identify label authentication information that receives is the identify label authentication information that connected WiFi network sends to this terminal use, otherwise, think that the identify label authentication information that receives is not the identify label authentication information that connected WiFi network sends to this terminal use;
Though the data message that WiFi network and terminal use send or receive all has the identify label authentication information, the general situation that error message can not occur receiving, the purpose that this step is carried out are to be the data message that connected WiFi network sends to this terminal use in order to ensure data message.
Step 303: it is mutual that the coupled WiFi network of this terminal use carries out data message, finishes current handling process;
Here, the coupled WiFi network side of terminal use carries out data message and is specially alternately:
The terminal use sends the data message that comprises the identify label authentication information to the WiFi network of being confirmed;
Network judges whether the identify label authentication information that receives is the identify label authentication information that connected terminal use sends, if, then it is believed that with this terminal use breath is mutual, otherwise, current handling process finished.
Because the scheme of WiFi data transmission in network of the present invention, before sending data message, the terminal use has confirmed employed WiFi network according to the identify label authentication information, therefore, when each terminal use's data message transmits in the public local area networks scope of a plurality of WiFi networks, transmit under each self-corresponding WiFi network in the capital, so, in the CSMA/CA agreement course of work, do not need interFrameGap just can solve the problem of data message conflict collision, and then improve network side and the mutual efficient of user terminal.
For realizing said method, as shown in Figure 4, the present invention also provides a kind of system of WiFi data transmission in network, and this system comprises: WiFi network 41 and terminal use 42; Wherein,
According to the WiFi network 41 that the identify label authentication information is confirmed, be used to send comprise the identify label authentication information data message to counterpart terminal user 42.
Wherein and the employed WiFi network of WiFi network validation, specifically comprise: based on the CSMA/CD agreement, the WiFi network validation that obtains the identify label authentication information earlier is from as the employed WiFi network of this terminal use; The WiFi network that obtains the identify label authentication information earlier sends the identify label authentication information to this terminal use, and this terminal use confirms employed WiFi network in view of the above.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a Wireless Fidelity (WiFi) data transmission in network, it is characterized in that, this method comprises: when carrying out transfer of data, the WiFi network of confirming according to the identify label authentication information sends the data message that comprises the identify label authentication information to the counterpart terminal user.
2. method according to claim 1 is characterized in that, described carrying out further comprises before the transfer of data:
The terminal use sends the identify label authentication information to each WiFi network after confirming to be in the public local area networks scope of a plurality of WiFi networks, confirms employed WiFi network.
3. method according to claim 2 is characterized in that, described terminal use confirms to be in the public local area networks scope of a plurality of WiFi networks, comprising:
Whether the terminal use enters after the WiFi network, be in the public local area networks scope of a plurality of WiFi networks based on Carrier Sense Multiple Access/collision detection (CSMA/CD) protocol detection.
4. method according to claim 2 is characterized in that, the employed WiFi network of described affirmation comprises:
Based on the CSMA/CD agreement, the WiFi network that obtains the identify label authentication information earlier will be confirmed certainly as the employed WiFi network of this terminal use;
Described WiFi network sends the identify label authentication information to this terminal use, and this terminal use confirms employed WiFi network in view of the above.
5. according to the arbitrary described method of claim 1 to 4, it is characterized in that described WiFi network sends the data message that comprises the identify label authentication information to the counterpart terminal user, comprising:
The WiFi network of confirming according to the identify label authentication information sends the data message that comprises the identify label authentication information to the terminal use;
The terminal use judges whether the identify label authentication information that receives is the identify label authentication information that connected WiFi network sends to this terminal use, if, it is mutual that then the coupled WiFi network of this terminal use carries out data message, otherwise, this terminal use keeps existing state, does not carry out any operation.
6. method according to claim 5 is characterized in that,
Described identify label authentication information comprises: authentication function sign, authentication function content and authentication function sign direction;
Whether the identify label authentication information that described judgement receives is the identify label authentication information that connected WiFi network sends to this terminal use, be specially: to the authentication function sign in the identify label authentication information, the authentication function content, and the content of the shared frame of authentication function sign direction is discerned respectively, the authentication function sign that receives, and the content of the shared frame of authentication function sign direction is identical with the content of the corresponding frame of terminal use's preservation, think that then the identify label authentication information that receives is the identify label authentication information that connected WiFi network sends to this terminal use, otherwise, think that the identify label authentication information that receives is not the identify label authentication information that connected WiFi network sends to this terminal use.
7. the system of a WiFi data transmission in network is characterized in that, this system comprises:
Confirm employed WiFi network according to the identify label authentication information, be used to send comprise the identify label authentication information data message to the counterpart terminal user.
8. system according to claim 7 is characterized in that,
Described terminal use also is used for: after confirming to be in the public local area networks scope of a plurality of WiFi networks, send the identify label authentication information to each WiFi network, and and the employed WiFi network of WiFi network validation.
9. system according to claim 8 is characterized in that, the described and employed WiFi network of WiFi network validation specifically comprises:
Based on the CSMA/CD agreement, the WiFi network validation that obtains the identify label authentication information earlier is certainly as the employed WiFi network of this terminal use;
Described WiFi network sends the identify label authentication information to this terminal use, and this terminal use confirms employed WiFi network in view of the above.
10. according to the arbitrary described system of claim 7 to 9, it is characterized in that,
Described terminal use also is used for: judge whether the identify label authentication information that receives is the identify label authentication information that connected WiFi network sends to this terminal use, after being confirmed to be the identify label authentication information that connected WiFi network sends to this terminal use, carry out the mutual operation of data message with the WiFi network.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010103195.4A CN101820304B (en) | 2010-01-28 | 2010-01-28 | Data transmission method and system in wireless fidelity network |
| PCT/CN2010/072496 WO2011091630A1 (en) | 2010-01-28 | 2010-05-06 | Method and system for data transmission in wireless fidelity (wifi) network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010103195.4A CN101820304B (en) | 2010-01-28 | 2010-01-28 | Data transmission method and system in wireless fidelity network |
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| CN101820304A true CN101820304A (en) | 2010-09-01 |
| CN101820304B CN101820304B (en) | 2015-01-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102883460A (en) * | 2011-07-15 | 2013-01-16 | 中兴通讯股份有限公司 | Service data transmitting method and system |
| CN105095711A (en) * | 2014-05-23 | 2015-11-25 | 联想(北京)有限公司 | Data transmission method and apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107527016B (en) * | 2017-07-25 | 2020-02-14 | 西北工业大学 | User identity identification method based on motion sequence detection in indoor WiFi environment |
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| CN1474564A (en) * | 2002-08-05 | 2004-02-11 | ��Ϊ��������˾ | Communication method between virtual local area webs |
| WO2007045147A1 (en) * | 2005-10-21 | 2007-04-26 | Huawei Technologies Co., Ltd. | An accessing network method, system and terminal of the wireless local area network terminal |
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| CN1705290A (en) * | 2004-06-03 | 2005-12-07 | 华为技术有限公司 | Method for accessing WLAN |
| US7505443B2 (en) * | 2004-06-24 | 2009-03-17 | Kapsch Trafficcom Inc. | System and method for broadcasting application-specific information in wireless local area networks |
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- 2010-05-06 WO PCT/CN2010/072496 patent/WO2011091630A1/en active Application Filing
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| CN1474564A (en) * | 2002-08-05 | 2004-02-11 | ��Ϊ��������˾ | Communication method between virtual local area webs |
| WO2007045147A1 (en) * | 2005-10-21 | 2007-04-26 | Huawei Technologies Co., Ltd. | An accessing network method, system and terminal of the wireless local area network terminal |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102883460A (en) * | 2011-07-15 | 2013-01-16 | 中兴通讯股份有限公司 | Service data transmitting method and system |
| CN102883460B (en) * | 2011-07-15 | 2017-12-05 | 中兴通讯股份有限公司 | A kind of service data transmission method and system |
| CN105095711A (en) * | 2014-05-23 | 2015-11-25 | 联想(北京)有限公司 | Data transmission method and apparatus |
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| CN101820304B (en) | 2015-01-28 |
| WO2011091630A1 (en) | 2011-08-04 |
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