In a mobile computing environment, efficient allocation of wireless communication channels has a consequential impact on the performance of the system. This paper presents a distributed channel allocation algorithm based on the concept of dynamic channel boundaries. Under this scheme, each mobile service station (MSS) is assigned a contiguous range of channels which is not overlapping with the ...

Distributed dynamic channel allocation (DDCA) is a fundamental resource management problem in mobile cellular networks. It has a flavor of distributed mutual exclusion but is not exactly a mutual exclusion problem (because a channel may be reused in different cells). In this paper, we establish the exact relationship between the two problems. Specifically, we introduce the problem of relaxed mu...

This paper proposes and evaluates a set of physical level assisted cross-layer channel assignment schemes. These schemes allocate an incoming call the available channel that experienced the best channel quality conditions during previous transmissions. To estimate such conditions, three different link quality metrics have been considered. The performance of the proposed schemes has been compare...

Consider a channel allocation problem over a frequency-selective channel. There are K channels (frequency bands) and N users such that K = bN for some positive integer b. We want to allocate b channels (or resource blocks) to each user. Due to the nature of the frequency-selective channel, each user considers some channels to be better than others. Allocating each user only good channels will r...

{ We propose an adaptive rate allocation scheme to choose the rates of the source coder and channel coder pair optimally. We express the end-to-end expected distortion in terms of the source coder distortion and the channel distortion. Also, we propose a modiied Gilbert noise channel to model the combination of channel en-coder, channel, and channel decoder. Based on our new model, we estimate ...

Abstract We consider the power and rate allocation for a transmission in wireless network where transmitter knows channel state of desired receiver but only statistics interferes. While this scenario is often encountered practice, extremely important dense networks, its optimal solution was not yet known. The analysis considers nodes that are distributed according to homogeneous Poisson point p...

We investigate source–controlled resource allocation for orthogonal transmission of heterogenous sources over a multiuser system. The system resources bandwidth and power are shared among all users in such a way that the average distortion for all users is minimised. Especially in mobile communications, the allocation of resources among users with different applications is a challenging task. T...

Cognitive Radio (CR) is an emerging technology for future wireless communication and technology. In the existing system, there is a multiple allocation over all the bands and also there is a crisis for spectrum availability, therefore a new approach for spectrum licensing is needed. Hence the optimal solution for the above case is cognitive radio. the resource-allocation problem in multihop CR ...