CN101925117A - Frame aggregation control method and device of WLAN (Wireless Local Area Network) - Google Patents
Frame aggregation control method and device of WLAN (Wireless Local Area Network) Download PDFInfo
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- CN101925117A CN101925117A CN2009102036505A CN200910203650A CN101925117A CN 101925117 A CN101925117 A CN 101925117A CN 2009102036505 A CN2009102036505 A CN 2009102036505A CN 200910203650 A CN200910203650 A CN 200910203650A CN 101925117 A CN101925117 A CN 101925117A
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- 230000002776 aggregation Effects 0.000 title claims abstract description 58
- 238000004220 aggregation Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 68
- 230000007613 environmental effect Effects 0.000 claims description 53
- 238000001303 quality assessment method Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 108700026140 MAC combination Proteins 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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Abstract
The invention provides a frame aggregation control method of a WLAN (Wireless Local Area Network). The method comprises the following steps of: acquiring the quality of a current wireless transmission environment by a transmitting end; and judging whether to start the frame aggregation function or not according to the quality of the wireless transmission environment. The invention also provides a frame aggregation control device of the WLAN. The method and the device of the invention can flexibly adjust whether to start the frame aggregation function or not according to the conditions of the wireless environment where WLAN equipment is arranged, thereby improving the data transmission reliability.
Description
Technical field
The present invention relates to WLAN (wireless local area network), particularly a kind of Wireless Local Area Network (LAN) frame aggregation control method and device.
Background technology
As shown in Figure 1, in the WLAN (wireless local area network), terminal (portable terminal or computer) is by the access point apparatus access network.Based on the wireless local area network technology of IEEE802.11 series of canonical is important and a kind of technology of being used widely in the home network interconnection technique.Yet the throughput of conventional WLAN, service quality etc. will also be short of to some extent, can not satisfy the requirement of multiple play service well.For throughput and the performance that improves WLAN (wireless local area network), IEEE802.11 set up TGn working group in 2004, studied ultrahigh speed wireless local area network technology of new generation.IEEE802.11n is near completion, and estimates to issue mid-term in 2009.IEEE802.11n carries out a series of technology innovations from physical layer, medium Access Layer, has increased substantially performance of wireless local area networks.Physical layer adopts OFDM (OFDM)+MIMO technology such as (multiple-input and multiple-outputs), and the medium Access Layer adopts technology such as frame aggregation, piece answer.
Frame aggregation is divided into two kinds, a kind of is A-MSDU, it is the polymerization of MAC service data unit, a plurality of MSDU (MAC Service Data Unit, medium access control service data unit) condense together, a shared MAC (medium access control) frame head and verification territory constitute a Medium Access Control (MAC) Protocol Data Unit MPDU (MAC Protocol Data Unit, media access control protocol data unit), as shown in Figure 2; Another kind is A-MPDU, i.e. the polymerization of Medium Access Control (MAC) Protocol Data Unit, and a plurality of MPDU condense together, with physical layer packet header, a territory and verification territory common formation physical data unit PPDU (physical layer protocol data unit), as shown in Figure 3.Frame aggregation has improved the ratio of WLAN (wireless local area network) transmits data packets net load, helps improving data throughput.During frame aggregation, the aggregate frame number is many more, then the physical data Bao Yuechang of Fa Songing.But, in view of the complexity of wireless transmission environment, be not under any circumstance all to be fit to transmission long data bag, too frequent because if packet loss retransmits, the throughput of system also can sharply descend.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of Wireless Local Area Network (LAN) frame aggregation control method and device, can dynamically control aggregate frame length, improves data transmission efficiency.
In order to address the above problem, the invention provides a kind of Wireless Local Area Network (LAN) frame aggregation control method, comprising:
Transmitting terminal obtains current wireless transmission environment quality, judges whether to enable the frame aggregation function according to described wireless transmission environmental quality.
Further, said method also can have following characteristics, and described transmitting terminal uses one or more sign wireless transmission environmental qualities in packet loss, retransmission rate and the wireless signal strength indication.
Further, said method also can have following characteristics, and described method comprises that also when transmitting terminal had been enabled the frame aggregation function, described transmitting terminal was adjusted the length of aggregate frame according to the wireless transmission environmental quality.
Further, said method also can have following characteristics, and the length that described transmitting terminal is adjusted aggregate frame according to the wireless transmission environmental quality specifically is meant:
When wireless transmission environmental quality during, increase the length of aggregate frame greater than first quality threshold; When wireless transmission environmental quality during less than second quality threshold, reduce the length of aggregate frame, described first quality threshold is greater than second quality threshold.
Further, said method also can have following characteristics, and described method also comprises, when transmitting terminal has been enabled the frame aggregation function, also judges whether the closure frame polymerizable functional according to the wireless transmission environmental quality.
The present invention also provides a kind of WLAN (wireless local area network) frame aggregation control device, comprising:
Wireless transmission environmental quality assessment unit is used to obtain current wireless transmission environment quality;
Control unit is used for judging whether to enable the frame aggregation function according to the wireless transmission environmental quality.
Further, said apparatus also can have following characteristics, and described wireless transmission environmental quality assessment unit is used for using packet loss, retransmission rate and the one or more sign wireless transmission environmental qualities of wireless signal strength indication.
Further, said apparatus also can have following characteristics, and described control unit also is used for when enabling the frame aggregation function, adjusts the length of aggregate frame according to the wireless transmission environmental quality.
Further, said apparatus also can have following characteristics, and described control unit also comprises:
First control module is used for increasing the length of aggregate frame when wireless transmission environmental quality during greater than first quality threshold;
Second control module is used for reducing the length of aggregate frame when wireless transmission environmental quality during less than second quality threshold; Described first quality threshold is greater than second quality threshold.
Further, said apparatus also can have following characteristics, and described control unit also is used for judging whether the closure frame polymerizable functional according to the wireless transmission environmental quality when enabling the frame aggregation function.
There is not to control flexibly the method for MAC Frame aggregation degree in the prior art, whether frame aggregation control method provided by the invention can enable the frame aggregation function according to the flexible adjustment of the residing wireless environment situation of WLAN devices, when enabling the frame aggregation function, also adjust the frame aggregation degree automatically, control sends the length of Frame, thereby improves the reliability of transmission data.
Description of drawings
Fig. 1 is the network system schematic diagram;
Fig. 2 is a frame aggregation A-MSDU schematic diagram;
Fig. 3 is a frame aggregation A-MPDU schematic diagram;
Fig. 4 is the embodiment of the invention 1 a frame aggregation control method flow chart.
Embodiment
Transmitting terminal is when sending data in the WLAN (wireless local area network), obtain the wireless transmission environmental quality, determine whether to enable the frame aggregation function according to the wireless transmission environmental quality then, and enabling under the frame aggregation function situation, automatically regulate the frame aggregation data packet length according to the wireless transmission environmental quality, promptly adjust the length of aggregate frame.
Wireless Local Area Network (LAN) frame aggregation control method provided by the invention is specific as follows, comprising:
Step 301, WLAN devices (transmitting terminal) is obtained current wireless transmission environment quality;
Wherein, the wireless transmission environmental quality can be by one or more sign the in the packet loss, retransmission rate and the wireless signal strength indication (RSSI) that send data.
Step 302, WLAN devices judge whether to enable the frame aggregation function according to the wireless transmission environmental quality;
A kind of determination methods is to judge that whether the wireless transmission environmental quality is greater than enabling thresholding, if then enable the frame aggregation function.
When not enabled frame aggregation function, judge whether to enable the frame aggregation function according to the wireless transmission environmental quality;
When enabling the frame aggregation function, also regulate frame aggregation length automatically according to the wireless transmission environmental quality.A kind of method of adjustment is:
When wireless transmission environmental quality during, increase aggregate frame length greater than first quality threshold;
When wireless transmission environmental quality during, reduce aggregate frame length less than second quality threshold;
When enabling the frame aggregation function, also judge whether the closure frame polymerizable functional according to the wireless transmission environmental quality.A kind of determination methods is, judges the wireless transmission environmental quality whether less than closing thresholding, if less than, closure frame polymerizable functional then.
The value of each parameter can be, wireless transmission environmental quality scope is 0～1 (by RSSI, packet loss, one or several parameters of retransmission rate characterize), it is 0.5 that first thresholding can be set to 0.7, the second threshold setting, enabling thresholding is 0.4, closing threshold setting is 0.3, is example only herein, and the present invention does not limit this.
Wherein, first quality threshold＞second quality threshold＞enable thresholding＞close thresholding.
Above-mentioned each threshold setting only is an example, other threshold setting modes of also can sampling, enable thresholding and close thresholding such as only being provided with, judge whether greater than enabling thresholding, greater than the time enable the frame aggregation function, under the situation of enabling the frame aggregation function, judge whether less than closing thresholding, if less than, closure frame polymerizable functional then.
In regulating aggregate frame length process, to calculate the wireless transmission environmental aspect in real time and adjust.Also can periodically adjust, perhaps, setting is adjusted according to system.
Embodiment 1:
As shown in Figure 4, be the embodiment 1 of the present invention according to packet loss.
When WLAN devices sends packet, can confirm by the acknowledgement frame that receives the other side's transmission whether this packet successfully sends.So transmitting terminal can be added up the packet loss of a period of time, just can weigh current wireless transmission environment quality according to packet loss.When packet loss is higher, be not suitable for sending than the long data bag, can reduce the length even the closure frame polymerizable functional of aggregate frame; When packet loss is low, can suitably increase data packet length increasing throughput, if promptly current not enabled frame aggregation function then enable the frame aggregation function if enable, then increases the length of aggregate frame.
Idiographic flow is as follows:
Step 401, transmitting terminal send packet, and the acknowledgement frame that sends of received communication opposite end, when resending packet and record data packet loss number; Regularly statistical system sends the packet loss of packet, obtains the wireless transmission environmental quality according to packet loss;
Step 402 is judged the wireless transmission environmental quality whether greater than enabling thresholding, if, execution in step 403; Otherwise, execution in step 406;
Step 403 judges whether to enable the frame aggregation function, if, execution in step 404, otherwise, execution in step 405;
Step 404 increases aggregate frame length or does not have operation, returns step 401;
Step 405 is enabled the frame aggregation function, returns step 401;
Step 406 judges whether to enable the frame aggregation function, if, execution in step 407, otherwise, step 401 returned;
Step 407 reduces aggregate frame length or closure frame polymerizable functional, returns step 401.
The present invention also provides a kind of WLAN (wireless local area network) frame aggregation control device, comprising:
Wireless transmission environmental quality assessment unit is used to obtain current wireless transmission environment quality; Use one or more sign wireless transmission environmental qualities in packet loss, retransmission rate and the wireless signal strength indication.
Control unit is used for judging whether to enable the frame aggregation function according to the wireless transmission environmental quality, also is used for when enabling the frame aggregation function, adjusts the length of aggregate frame according to the wireless transmission environmental quality; Also be used for when enabling the frame aggregation function, judging whether the closure frame polymerizable functional according to the wireless transmission environmental quality.
Described control unit also comprises:
First control module is used for increasing the length of aggregate frame when wireless transmission environmental quality during greater than first quality threshold;
Second control module is used for reducing the length of aggregate frame when wireless transmission environmental quality during less than second quality threshold, and described first quality threshold is greater than second quality threshold.
Claims (10)
1. a Wireless Local Area Network (LAN) frame aggregation control method is characterized in that, comprising:
Transmitting terminal obtains current wireless transmission environment quality, judges whether to enable the frame aggregation function according to described wireless transmission environmental quality.
2. the method for claim 1 is characterized in that, described transmitting terminal uses one or more sign wireless transmission environmental qualities in packet loss, retransmission rate and the wireless signal strength indication.
3. the method for claim 1 is characterized in that, described method comprises that also when transmitting terminal had been enabled the frame aggregation function, described transmitting terminal was adjusted the length of aggregate frame according to the wireless transmission environmental quality.
4. method as claimed in claim 3 is characterized in that, the length that described transmitting terminal is adjusted aggregate frame according to the wireless transmission environmental quality specifically is meant:
When wireless transmission environmental quality during, increase the length of aggregate frame greater than first quality threshold; When wireless transmission environmental quality during less than second quality threshold, reduce the length of aggregate frame, described first quality threshold is greater than second quality threshold.
5. as claim 1 or 3 or 4 described methods, it is characterized in that described method also comprises, when transmitting terminal has been enabled the frame aggregation function, also judges whether the closure frame polymerizable functional according to the wireless transmission environmental quality.
6. a WLAN (wireless local area network) frame aggregation control device is characterized in that, comprising:
Wireless transmission environmental quality assessment unit is used to obtain current wireless transmission environment quality;
Control unit is used for judging whether to enable the frame aggregation function according to the wireless transmission environmental quality.
7. device as claimed in claim 6 is characterized in that, described wireless transmission environmental quality assessment unit is used for using packet loss, retransmission rate and the one or more sign wireless transmission environmental qualities of wireless signal strength indication.
8. device as claimed in claim 6 is characterized in that, described control unit also is used for when enabling the frame aggregation function, adjusts the length of aggregate frame according to the wireless transmission environmental quality.
9. device as claimed in claim 8 is characterized in that, described control unit also comprises:
First control module is used for increasing the length of aggregate frame when wireless transmission environmental quality during greater than first quality threshold;
Second control module is used for reducing the length of aggregate frame when wireless transmission environmental quality during less than second quality threshold, and described first quality threshold is greater than second quality threshold.
10. as the arbitrary described device of claim 6 to 9, it is characterized in that described control unit also is used for judging whether the closure frame polymerizable functional according to the wireless transmission environmental quality when enabling the frame aggregation function.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102036505A CN101925117A (en) | 2009-06-09 | 2009-06-09 | Frame aggregation control method and device of WLAN (Wireless Local Area Network) |
| PCT/CN2009/075765 WO2010142120A1 (en) | 2009-06-09 | 2009-12-21 | Control method and appratus for frame aggregation of wireless local area network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102036505A CN101925117A (en) | 2009-06-09 | 2009-06-09 | Frame aggregation control method and device of WLAN (Wireless Local Area Network) |
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| CN101925117A true CN101925117A (en) | 2010-12-22 |
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| CN2009102036505A Pending CN101925117A (en) | 2009-06-09 | 2009-06-09 | Frame aggregation control method and device of WLAN (Wireless Local Area Network) |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355324A (en) * | 2011-08-10 | 2012-02-15 | 中国联合网络通信集团有限公司 | Frame aggregation control method, device and system |
| CN109302750A (en) * | 2017-07-24 | 2019-02-01 | 中国移动通信集团广东有限公司 | Adjustment method, device, device and storage medium for adaptive convergence scheduling function |
| CN113518335A (en) * | 2021-07-16 | 2021-10-19 | Oppo广东移动通信有限公司 | Bluetooth data transmission method, device, equipment and storage medium |
| CN115835332A (en) * | 2022-11-11 | 2023-03-21 | 湖南亿联无限科技有限公司 | Method, system, device and computer-readable storage medium for reducing wifi delay |
| CN116668551A (en) * | 2023-05-09 | 2023-08-29 | 阿里巴巴（中国）有限公司 | A data transmission method and device in a data transmission network |
| GB2628379A (en) * | 2023-03-22 | 2024-09-25 | British Telecomm | Improved Wi-Fi air utilisation |
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| CN1567736A (en) * | 2003-07-08 | 2005-01-19 | 联想(北京)有限公司 | A method for improving transmission efficiency of wireless network channel |
| EP1953964A1 (en) * | 2007-01-31 | 2008-08-06 | Research In Motion Limited | Loading control methods and apparatus for wireless access points of wireless local area networks in support of legacy terminals |
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| KR100728038B1 (en) * | 2006-03-03 | 2007-06-14 | 삼성전자주식회사 | Method and apparatus for grouping and transmitting data on PLC network |
| CN101257419B (en) * | 2007-02-27 | 2010-12-29 | 中国移动通信集团公司 | Wireless VOIP voice frame combining method as well as radio device |
| JP4795303B2 (en) * | 2007-04-25 | 2011-10-19 | キヤノン株式会社 | COMMUNICATION DEVICE, COMMUNICATION DEVICE CONTROL METHOD, AND COMPUTER PROGRAM FOR CAUSING COMPUTER TO EXECUTE THE CONTROL METHOD |
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2009
- 2009-06-09 CN CN2009102036505A patent/CN101925117A/en active Pending
- 2009-12-21 WO PCT/CN2009/075765 patent/WO2010142120A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1567736A (en) * | 2003-07-08 | 2005-01-19 | 联想(北京)有限公司 | A method for improving transmission efficiency of wireless network channel |
| EP1953964A1 (en) * | 2007-01-31 | 2008-08-06 | Research In Motion Limited | Loading control methods and apparatus for wireless access points of wireless local area networks in support of legacy terminals |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355324A (en) * | 2011-08-10 | 2012-02-15 | 中国联合网络通信集团有限公司 | Frame aggregation control method, device and system |
| CN102355324B (en) * | 2011-08-10 | 2013-11-06 | 中国联合网络通信集团有限公司 | Frame aggregation control method, device and system |
| CN109302750A (en) * | 2017-07-24 | 2019-02-01 | 中国移动通信集团广东有限公司 | Adjustment method, device, device and storage medium for adaptive convergence scheduling function |
| CN113518335A (en) * | 2021-07-16 | 2021-10-19 | Oppo广东移动通信有限公司 | Bluetooth data transmission method, device, equipment and storage medium |
| CN113518335B (en) * | 2021-07-16 | 2025-04-25 | Oppo广东移动通信有限公司 | Bluetooth data transmission method, device, equipment and storage medium |
| CN115835332A (en) * | 2022-11-11 | 2023-03-21 | 湖南亿联无限科技有限公司 | Method, system, device and computer-readable storage medium for reducing wifi delay |
| GB2628379A (en) * | 2023-03-22 | 2024-09-25 | British Telecomm | Improved Wi-Fi air utilisation |
| CN116668551A (en) * | 2023-05-09 | 2023-08-29 | 阿里巴巴（中国）有限公司 | A data transmission method and device in a data transmission network |
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| Publication number | Publication date |
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| WO2010142120A1 (en) | 2010-12-16 |
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Application publication date: 20101222 |