| Publisher | University of Illinois | ||
|---|---|---|---|
| Format | 341.0KB PDF | Date added | 16 Jun 2006 |
| Topics | Mobile - Wireless Communications, Wireless LAN, Wi-Fi (802.11) | ||
| Downloads | 4 | ||
This paper analyzes the interference mitigation strategies in existing 802.11 WLANs and shows that incomplete and inconsistent channel status assessment due to intra- /inter-BSS interferences leads to the hidden/exposed terminal problem. The paper then proposes a novel approach based on a class of heterogeneous MAC protocols that are not only parameter-wise adjustable, but also structurally adaptive. Different from existing network protocol design, the method results in dynamic, context-aware, heterogeneous MAC protocols that are usually applied on a per sender-receiver pair basis, for the same function of wireless medium access control. A set of signaling messages are defined for inter-operability among heterogeneous MACs, although they may interpret those control messages differently based on their specific context.
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