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Cooperative communication based on cooperative diversity allows a collection of radio terminals to relay signals for each other in wireless fading channels. In wireless ad hoc networks, nodes communicate with each other using multihop routed transmission and thus hop-by-hop cooperative diversity can be effectively exploited. This paper proposes two cooperation models of per-link cooperation (PLC)...
Wireless mesh networks used for broadband access may be equipped with multiple Internet gateways. Using airtime metric as the main criterion for path selection is an effective method for achieving load-balancing in such a multi-homed mesh network. In this paper, we describe how the radio-aware path selection using airtime as a metric can be implemented in order to achieve this functionality, based...
The booming multimedia applications are demanding multi-hop communications in high data rate millimeter wave radio WPANs (Wireless Personal Area Networks). However, unable to make use of space reuse, the IEEE 802.15.3 dependent piconet scheme shows its limit when the number of inter-connected piconet grows. In this paper, we introduce the concept of a bridging device - the via to setup multi-hop link...
In this paper, we present MRL-QRP, a multi-agent reinforcement learning based routing protocol with QoS support for wireless sensor networks. In MRL-QRP, sensor node cooperatively computes QoS routes using a distributed value function - distributed reinforcement learning algorithm (DVFDRL). Global optimization can be achieved by using locally observed network information and limited exchanging of...
This paper addresses the trend in wireless sensor network applications of increasing node density and multi-hop communications that result into extremely challenging design constraints. SSAS, an adaptive hybrid localised sink-oriented Routing/MAC protocol is proposed. It offers a self-configuration scalable solution for large random sensor networks and attempts to alleviate multi-hop congestion problems...
Research on wireless sensor networks has recently received much attention as they offer an advantage of monitoring various kinds of environment by sensing physical phenomenon. Among various issues, energy consumption is one of the most important criteria for routing protocol in wireless sensor networks (WSNs). This paper introduces an energy efficient clustering algorithm for mobile sensor network...
Wireless mesh networks will play an important role in the next-generation wireless communication systems as it can provide wide coverage and scalable broadband Internet access services. However, congestion in such networks may lead to throughput degradation, packet loss and longer transmission delay. Therefore, routing and traffic forwarding schemes which are aware of the congestion status of a wireless...
Although several congestion aware routing protocols have been proposed for mobile ad-hoc networks (MANETs) over the last decade, the effect of the different traffic types has not been considered in any routing protocol. Distinguishing different types of traffic that each node deals with in QoS-aware MANETs and responding to routing protocol requests correspondingly can potentially increase the performance...
This paper proposes a multipath routing protocol called cross-layered multipath AODV (CM-AODV), which selects multiple routes on demand based on the signal-to-interference plus noise ratio (SINR) measured at the physical layer. Note that AODV (ad hoc on-demand distance vector) is one of the most popular routing protocols for mobile ad hoc networks. Each time a route request (RREQ) message is forwarded...
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