Improving QoS Performance of Multi-radio Multi- channel WMNs by Adopting a Novel Channel Assignment Scheme
نویسنده
چکیده
The CSMA/CA based random channel access mechanisms in Wireless Mesh Networks(WMNs), IEEE 802.11 DCF and EDCA, are inefficient to eliminate effectively hidden terminal and exposed terminal problems in multi-hop scenarios. In this paper, we propose efficient channel assignment and routing protocols for multi-radio multi-channel (MRMC) wireless mesh networks. These set of protocols are based on Latin squares and have MRMC communication capabilities i.e., the multiple access scheduling in multi-radio multi-channel mesh networking. A novel efficient channel assignment and routing scheme is also developed taking into account the interference constraints, the number of channels in the network and the number of radios available at each mesh router for multiradio multi-channel wireless mesh networks. MRMC communication using the two types of channel assignment schemes and routing methods is compared.
منابع مشابه
Interference-Aware and Cluster Based Multicast Routing in Multi-Radio Multi-Channel Wireless Mesh Networks
Multicast routing is one of the most important services in Multi Radio Multi Channel (MRMC) Wireless Mesh Networks (WMN). Multicast routing performance in WMNs could be improved by choosing the best routes and the routes that have minimum interference to reach multicast receivers. In this paper we want to address the multicast routing problem for a given channel assignment in WMNs. The channels...
متن کاملA Novel Multicast Tree Construction Algorithm for Multi-Radio Multi-Channel Wireless Mesh Networks
Many appealing multicast services such as on-demand TV, teleconference, online games and etc. can benefit from high available bandwidth in multi-radio multi-channel wireless mesh networks. When multiple simultaneous transmissions use a similar channel to transmit data packets, network performance degrades to a large extant. Designing a good multicast tree to route data packets could enhance the...
متن کاملA Survey on Multicast Routing Approaches in Wireless Mesh Networks
Wireless mesh networks (WMNs) which mediates the broadband Internet access, have been recently received many attentions by the researchers. In order to increase capacity in these networks, nodes are equipped with multiple radios tuned on multiple channels emerging multi radio multi-channel WMNs (MRMC WMNs). Therefore, a vital challenge that poses in MRMC WMNs is how to properly assign channels ...
متن کاملCentralized Quasi-Static Channel Assignment for Multi-Radio Multi-Channel Wireless Mesh Networks
Employing multiple channels in wireless multihop networks is regarded as an effective approach to increasing network capacity. This paper presents a centralized quasi-static channel assignment for multi-radio multi-channel Wireless Mesh Networks (WMNs). The proposed channel assignment can efficiently utilize multiple channels with only 2 radios equipped on each mesh router. In the scheme, the n...
متن کاملA cross-layer optimization framework for joint channel assignment and multicast routing in multi-channel multi-radio wireless mesh networks
Existing literature on multicast routing protocols in wireless mesh networks (WMNs) from the view point of the links involved in routing are divided into two categories: schemes aiming at the NP-hard problem of minimal interference multicast tree construction. In contrast, other methods develop network coding-based solutions with the main objective of throughput maximization which can effective...
متن کامل