Two channel assignment policies are considered for a Kelly type loss network with an additional channel continuity requirement. It is assumed that the channels on any given link have distinct identities, and that a connection should be assigned channels with a common identity on all links of its route. Such constraints arise in circuit switched WDM optical networks and wireless cellular network...

Hieu Dinh Computer Science & Engineering Dept. U. of Connecticut Storrs, CT, 06269. [email protected] Yoo-Ah Kim Computer Science & Engineering Dept. U. of Connecticut Storrs, CT, 06269. [email protected] Seungjoon Lee AT&T Labs – Research Florham Park, NJ 07932. [email protected] Minho Shin Computer Science Dept. U. of Maryland College Park, MD, 20740. [email protected] Bing Wang Comp...

In this paper, we present a routing and channel assignment protocol for multi-channel multi-hop wireless networks. We view a multi-hop network as an extension to infrastructure networks, where a mobile host may connect to an access point using multi-hop wireless routes, via other mobile hosts or wireless routers. The access points are configured to operate on one of multiple available channels....

Most Mobile Ad hoc Networks (MANETs) research is based on a single channel. Nonetheless, multi-channel is an approach that can increase network capacity by transmitting traffic on different channels in an interference area. Channel assignment and channel switching, however, are two main challenges when the common communication channel is no longer available using the multi-channel scheme. We pr...

The dynamic channel assignment (DCA) in mobile communications systems using genetic algorithm (GA) is investigated in this research. Two new strategies using GA are proposed. In the first one, the channels previously assigned are kept locked during the call holding time (GAL). In the second one, the calls can be switched to different channels during the connection time (GAS). The performance of...

This paper develops a multiple channel assignment model, which allows to take advantage of spectrum opportunities in cognitive radio networks in the most efficient way. The developed scheme allows making several assignments of available and frequency adjacent channel, which require a bigger bandwidth, under an equality environment. The hybrid assignment model it is made by two algorithms, one t...

SUMMARY This letter proposes a novel geographic channel assignment (GCA) framework for dynamic channel allocation (DCA) in broad-band wireless access networks (BWANs). The proposed GCA scheme is based on the characteristics of radio propagation, which focuses on the relationship between transmission distances and communication parameters, e.g., signal-to-noise ratio (SNR) etc., and uses a signa...

Channel assignment in multi-channel multiradio wireless networks poses a significant challenge due to scarcity of number of channels available in the wireless spectrum. Further, additional care has to be taken to consider the interference characteristics of the nodes in the network especially when nodes are in different collision domains. This work views the problem of channel assignment in mul...

Rapid growth in telecom industry searching for new methods provide the better service to their customer here implementing proposes a multihop dynamic channel assignment (MDCA) scheme for time division multiple access (TDMA)-based multihop cellular networks. The proposed MDCA assigns channels are observed in ofdma system to the calls based on interference information in surrounding cells, provid...