[WNL]Notice

"Blank Slot: Hidden node problem mitigation in WLANs based on IEEE 802.11"
by Jaha Mvulla, Eun-Chan Park, and Muhammad Adnan


WLANs based on IEEE 802.11 are widely deployed to satisfy the increasing demands of wireless communication, however, they are facing number of challenges including interference and packet collisions due to the hidden nodes. Although the RTS/CTS mechanism has been proposed to mitigate the hidden node problem, it still has several drawbacks; the control packets can collide among themselves and they increase overheads which lead to the performance degradation. Moreover, the RTS/CTS mechanism can result in the false blocking and deadlock where nodes have to defer the channel access unnecessarily. In this paper, we propose a solution called Blank slot mechanism. In the proposed mechanism, node will not transmit or reserve some slot time after certain number of successful transmissions which allows other nodes to transmit and, thus, mitigates packet collisions and interference due to hidden nodes. This mechanism does not require any change on either PHY or MAC layer or packet format based on current standard. Also, the solution does not cause overheads and blocking or deadlock. It works in a distributed way without any additional signaling mechanism. As well as decreasing the transmission failure due to collision or interference, this mechanism improves time fairness among nodes since the node with high rate will serve less time for blank slot than one with low rate and all the nodes release and serve the blank slot.

번호 제목 글쓴이 날짜 조회 수
21 Paper presentation in ICTC 2015 anonymous 2015.12.14 5825
20 Paper accepted for presentation in European Conf. on Networks and Communications (EUCNC) anonymous 2015.06.25 4702
19 한국통신학회 2015년도 동계종합학술회 논문 발표 file anonymous 2015.01.09 6053
18 Paper accepted for publication anonymous 2014.09.30 9422
» 한국인터넷정보학회 2014년 춘계학술발표회의 논문 발표 anonymous 2014.05.19 15477
16 한국통신학회 2014년도 동계종합학술회 논문 발표 anonymous 2014.05.19 13082
15 New students are joined ecpark 2013.09.09 34626
14 A paper accepted for publication in Mobile Information Systems ecpark 2013.06.14 35906
13 A paper is accepted for publication ecpark 2013.06.12 35317
12 A new research project is supported by NRF ecpark 2013.06.12 39680
11 연구과제 선정 & 대학원생 모집 ecpark 2013.06.12 36275
10 Accepted for publication in IEEE Trans. on Vehicular Technology file ecpark 2013.04.29 41086
9 Accepted for presentation in ICUFN 2013 ecpark 2013.04.29 41838
8 한국통신학회 2012년도 추계종합학술회 논문 발표 file 김영부 2012.11.30 39741
7 New students joined ecpark 2012.08.13 48428
6 2012 통신학회 하계학술회의 논문 발표 file ecpark 2012.06.23 43992
5 석/박사 대학원생 모집 ecpark 2012.03.14 42673
4 Recruit motivated Ph.D students ecpark 2012.03.14 54623
3 Moved to new engineering building ecpark 2012.02.23 43294
2 Accepted for presentation in ICNC (Int. Conf. on computing, networking, and communications) 2012 ecpark 2011.12.06 63296