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A Distributed Three-hop Routing Protocol to Increase the Capacity of Hybrid Wireless Networks

Routing Protocol to Increase the Capacity of Hybrid Wireless Networks

<h1>A Distributed Three-hop Routing Protocol to Increase the Capacity of Hybrid Wireless Networks </h1>

Hybrid wireless networks combining the advantages of both mobile ad-hoc networks and infrastructure wireless networks have been receiving increased attention due to their ultra-high performance. An efficient data routing protocol is important in such networks for high network capacity and scalability. However, most routing protocols for these networks simply combine the ad-hoc transmission mode with the cellular transmission mode, which inherits the drawbacks of ad-hoc transmission. This paper presents a Distributed Three-hop Routing protocol (DTR) for hybrid wireless networks. To take full advantage of the widespread base stations, DTR divides a message data stream into segments and transmits the segments in a distributed manner. It makes full spatial reuse of a system via its high speed ad-hoc interface and alleviates mobile gateway congestion via its cellular interface. Furthermore, sending segments to a number of base stations simultaneously increases throughput and makes full use of widespread base stations. In addition, DTR significantly reduces overhead due to short path lengths and the elimination of route discovery and maintenance. DTR also has a congestion control algorithm to avoid overloading base stations. Theoretical analysis and simulation results show the superiority of DTR in comparison with other routing protocols in terms of throughput capacity, scalability and mobility resilience. The results also show the effectiveness of the congestion control algorithm in balancing the load between base stations.


In order to increase the capacity of hybrid wireless networks, various routing methods with different features are implemented. 

proposed a Multihop Cellular Network and derived its throughput. Hsieh investigated a hybrid IEEE 802.11 network architecture with both a distributed coordination function and a point coordination function. 

proposed a unified cellular and ad-hoc network architecture for wireless communication. Studied the impact of concurrent transmission in a downlink direction (i.e. from BSes to mobile nodes) on the system capacity of a hybrid wireless network.

There are other methods proposed to improve routing performance in hybrid wireless networks.

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