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Slotted Transmissions using Frame aggregation: A MAC protocol for Capacity Enhancement in Ad-hoc Wireless LANs  

Rahman, Md. Mustafizur (Department of Computer Engineering, Kyung Hee University)
Hong, Choong-Seon (Department of Computer Engineering, Kyung Hee University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.44, no.8, 2007 , pp. 33-41 More about this Journal
Abstract
The IEEE 802.11 DCF channel access function allows single transmission inside two-hop network in order to avoid collisions and eliminate the hidden and exposed terminal problems. Singular transmission capability causes data frames waiting for the entire roundtrip time in the transmitter neighborhood, and results in increased frame latency and lower network throughput. Real-time and pervasive applications are severely affected for the lower medium utilization; especially with high network traffic. This work proposes a new scheme with the help of Frame Aggregation technique in IEEE802.11n and overcomes the single transmission barrier maintaining the basic DCF functionality. Proposed scheme allows parallel transmissions in non-interfering synchronized slots. Parallel transmissions bypass the conventional physical carrier sense and random Backoff time for several cases and reduce the frame latency and increase the medium utilization and network capacity.
Keywords
DCF; Frame Aggregation; Fragmentation;
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