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In multi-radio wireless networks, it is vital to efficiently utilize the resource of non-overlapping channels, and thus the problem of channel assignment has been widely studied. Most proposed channel assignment approaches focus on reducing interference or maximizing throughput, assuming that all the radios on each node are keeping active. However, it is a significant waste of energy when network...
In this paper, we propose a non-cooperative, dynamic and extensive game model for routing in a wireless sensor network (WSN). We treat each sensor node as a player who has a strategy to choose from in order to find the route that meets certain objective functions. A multi-hop routing is performed concurrently between multiple source and multiple destination nodes considering signal-to-noise-interference...
The traditional on-demand routing protocols for Multi-hop Heterogeneous Wireless Networks (MHWNs) generally take the hop count or the expected transmission time as the measurement for the calculation of the shortest path or the minimum link cost. However, the impact of the coupling of the intermediate nodes on the life period of routing has not been integrated into the route measurement. When the...
A major problem in Wireless Mesh Network is capacity decrease due to wireless interference. A wireless mesh router with multiple routers and channels is capable of reducing network interference. Static channel allocation and dynamic channel allocation are types of channel allocation. Adaptive Dynamic Channel Allocation protocol (ADCA) is dynamic channel allocation protocol which decreases the packet...
Wireless Mesh Networking is a continuous growing technology that can be used used for several application scenarios, such as military tactical operations, etc. in next generation wireless networks. The IEEE 802.11s Standard defines the procedures that wireless nodes follow in order to interconnect and create a Wireless Local Area Network (WLAN) mesh network. It, also, defines the routing protocol...
Modeling the performance of Wireless Mesh Networks (WMN) is a task that has received a lot of attention and has produced a large body of related literature. Most of the times, such literature is based on analytic assumptions or computer simulations, and results not always match reality. In this paper we use data collected over a one-month period in a 50-nodes wireless community network in Barcelona...
In this paper, we propose a cross layer optimization technique for video transmission in multi-radio Wireless Mesh Networks (WMNs). WMNs are used as back haul to connect various networks such as Wi-Fi, Wi-MAX etc. to the internet. The presence of multiple radios in this networks increases the capacity but introduces an interference. Thus, designing a better routing metric to find optimal path is an...
One of the main advantages of utilizing flexible backhaul in future HetNets is that it can provide better user experience through flexible resource allocation. For this purpose, it is important to provide the required quality of service (QoS) in such networks. In this paper, we consider the problem of cross-layer radio resource management in HetNets with flexible backhaul which guarantees minimum...
Cognitive Radio technology is emerged as a platform to solve the problem of spectrum scarcity in wireless networks. Whenever designing a routing algorithm for cognitive radio ad hoc networks, the aggregate interference from secondary users to the primary user must be considered. In this paper, a Distributed Game theory-based Routing algorithm (DGR) is proposed. The proposed routing algorithm not only...
The paper studies the distortion performance of multihop underwater acoustic sensor networks. The network is composed of bottom mounted sensors and the sensor to sensor links experience Ricean fading. The distortion is evaluated for the case when there is interference from other sensors in the network. The focus is on the sustainable number of hops in the network for a maximum allowed (target) route...
In this paper a novel delay aware potential field based routing is proposed for cognitive radio. The proposed methods are inspired by potential field techniques applied in robot navigation. The novelty of the proposed methods arises from identifying the analogy between packet routing in wireless networks and obstacle avoidance in robot navigation. This allows for the modeling of desired communication...
Traditional multi-hop wireless sensor and actuator networks (WSANs) based on an IEEE 802.15.4 standard can unintentionally provide poor communication and control performance when a traffic load is high. This paper studies the potential of employing multi-channel and multi-interface (MCMI) communication to improve the performance of WSANs. The Ad hoc On-Demand Distance Vector (AODV) routing protocol...
In this paper, we analyze and optimize the performance of distributed routing schemes in multihop wireless ad-hoc networks. We assume that the nodes are distributed according to a Poisson-Point-Process (PPP) and consider routing schemes that select the next relay based on geographical locations and local knowledge of the channel state (CSI). At the first stage we define the optimization problem and...
In this paper, we define a collision area in a heterogeneous cellular network for the purpose of interference management between Device-to-Device (D2D) and conventional cellular (CC) communications. Currently, most D2D routing algorithms assume synchronized accurate location knowledge among users and the base stations. In reality, this level of location accuracy is difficult and power consuming in...
It has been proved that network coding can optimize routing in wireless networks. Thus, in deterministic routing, coding is considered as an important factor for route selection. While the existing deterministic routing solutions detect paths with coding opportunities based on the two-flow coding, little attention has been drawn to the multi-flow situation. Coding multiple flows directly, however,...
The existing works on analyzing/utilizing spectrum whitespace in Cognitive Radio Networks (CRNs) are either empirical studies lacking of theoretical guarantee, or local primary network information based inducing inaccurate analysis and estimation, or overlooking the spectrum whitespace details. Therefore, we propose to systematically analyze the spectrum whitespace in CRNs from a social network perspective...
As a popular routing protocol in wireless sensor networks (WSNs), greedy routing has received great attention. The previous works characterize its data deliverability in WSNs by the probability of all nodes successfully sending their data to the base station. Their analysis, however, neither provides the information of the quantitative relation between successful data delivery ratio and transmission...
Unlike in the developed countries, TV white spaces are abundant in India and rural broadband coverage is negligible. Government of India has an ambitious plan to connect 250,000 rural offices (Gram Panchayat) using optical fiber based point of presence (PoP); this will allay, but not solve the rural broadband coverage problem. In this work, a middle-mile multihop mesh network operating in the TV UHF...
This On-demand route discovery mechanism of reactive protocols based on flooding of route request packets faced serious excursion of “broadcast storm”. Moreover, frequent path breakages are experienced due to link failures, as an impact of time varying characteristics of radio channel and/or node mobility. In this paper Channel Quality Adaptive Gossip Flooding mechanism for Ad hoc On-demand Distance...
In Hybrid networks, which synergistically mix together wired and wireless links to achieve flexible and reliable communication, it is particularly challenging to routing selfish tasks since each task wish to finish transmission as early as possible and its decision could have impacts on the others. In this paper, we investigate the problem to route a given set of selfish tasks in hybrid networks....
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