2024-03-29T13:17:20Z
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2022-12-15T03:34:33Z
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User-Oriented QoS Control Method Based on CSMA/CA for IEEE802.11 Wireless LAN System
User-Oriented QoS Control Method Based on CSMA/CA for IEEE802.11 Wireless LAN System
Kishida, Akira
5506
Iwabuchi, Masashi
5507
Shintaku, Toshiyuki
5508
Sakata, Tetsu
5509
Hiraguri, Takefumi
5510
Nishimori, Kentaro
5511
user-oriented
QoS
fixed backoff
CSMA
CA
IEEE802.11
The IEEE 802.11 distributed coordinated function (DCF) adopts carrier sense multiple access with collision avoidance (CSMA/CA) as its medium access control (MAC) protocol. CSMA/CA is designed such that the transmission from any one station does not have priority over any other. In a congested environment with many DCF stations, this design makes it difficult to protect channel resources for certain stations such as when products are used for presentation at exhibitions, which should be protected based on priority. On the other hand, The IEEE 802.11 enhanced distributed channel access (EDCA) provides a quality-of-service (QoS) mechanism for DCF. However in EDCA, transmission opportunities are allocated based on not individual stations but on the defined traffic type of applications. This paper proposes a distributed dynamic resource allocation method that enables control of flexible bandwidth allocation to each specific station. The proposed method controls the priority level and can coexist with conventional CSMA/CA. Moreover, the proposed method improves the system throughput. Specifically, under the coexistence environment with DCF stations, the proposed method is able to obtain up to over 300% higher user throughput characteristic compared to the case in which the proposed method is not introduced. In addition, under non-coexistence environment, all the proposed stations achieve 70% higher throughput than DCF stations when the number of stations in a network is 50.
journal article
The Institute of Electronics, Information and Communication Engineers
2013-02
application/pdf
IEICE transactions on communications
2
E96-B
419
429
IEICE transactions on communications
AA10826261
09168516
https://niigata-u.repo.nii.ac.jp/record/1769/files/E96-B_2_419-429.pdf
eng
info:doi/10.1587/transcom.E96.B.419
http://www.ieice.org/jpn/trans_online/
Copyright(C)2013 IEICE
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