Results 221 to 230 of about 54,333 (259)

Channel assignment for hierarchical cellular networks

2003 International Conference on Parallel Processing, 2003. Proceedings., 2003
In mobile telecommunications operation, radio channels are scarce resources and should be carefully assigned. One possibility is to deploy the hierarchical cellular network (HCN). We study a HCN channel assignment scheme called repacking on demand (RoD). RoD was originally proposed for wireless local loop networks.
Hsien-Ming Tsai, Ai-Chun Pang, Yung-Chun Lin, Yi-Bing Lin   +3 more
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Priority Channel Assignment in Tandem DSI

IEEE Transactions on Communications, 1980
DSI (digital speech interpolation) is a technique for increasing the utilization of telephone transmission facilities by allocating transmission channels during intervals of active speech (talkspurts) only. The use of DSI for tandem connections, where DSI links are connected in cascade via circuit switching, poses a problem, however, since the voice ...
Mischa Schwartz, Kenichi Mase, Donald R. Smith   +2 more
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Graph labeling and radio channel assignment

Journal of Graph Theory, 1998
Given a graph and a set of constraints the authors find labelings of minimum span. Vertices of highly structured graphs can represent radio transmitters, hence the focus is on the infinite triangular, square and line lattices. Previously accepted practice can lead to suboptimal channel assignments.
Jan van den Heuvel, R. A. Leese, M. A. Shepherd   +2 more
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An optimal channel pin assignment algorithm

1990 IEEE International Conference on Computer-Aided Design. Digest of Technical Papers, 2002
A study is made of the channel pin assignment problem subject to both position and order constraints. The authors show that the problem is NP-hard in general and present a polynomial time optimal algorithm for an important case where the relative orderings of the terminals are completely fixed.
Yang Cai 0003, D. F. Wong 0001
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Channel assignment algorithms

Proceedings of the 4th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks, 2009
This paper gives the comparison of different channel assignment heuristics proposed in the literature and introduces a new algorithm named MCAIR. Specifically, it compares, static, multi-radio multi-channel algorithms which are graph theory based and where a priori traffic characteristics are unknown.
Husnain Mansoor Ali, Anthony Busson, Véronique Vèque   +2 more
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Frequency Channel Assignment on Planar Networks

2002
For integers p ? q, a L(p, q)-labeling of a network G is an integer labeling of the nodes of G such that adjacent nodes receive integers which differ by at least p, and nodes at distance two receive labels which differ by at least q. The minimum number of labels required in such labeling is ?qp(G).
Michael Molloy 0001, Mohammad R. Salavatipour   +1 more
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Real Number Channel Assignments for Lattices

SIAM Journal on Discrete Mathematics, 2008
We consider the problem of assigning a numerical channel to each transmitter in a large regular array such that multiple levels of interference, which depend on the distance between transmitters, are avoided by sufficiently separating the channels. The goal is to find assignments that minimize the span of the labels used.
Jerrold R. Griggs, Xiaohua Teresa Jin
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The Channel Assignment Problem with Variable Weights

SIAM Journal on Discrete Mathematics, 2006
A l-graph $G$ is a (finite or infinite) graph with $k$ types of edges, $x_1$-edges,…, $x_k$-edges. A labeling $c$ of the vertices of $G$ by nonnegative reals is proper with respect to reals $x_1,\ldots,x_k$ if the labels of the end-vertices of an $x_i$-edge differ by at least $x_i$. The span of the labeling $c$ is the supremum of the labels used by $c$.
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Wireless Channel Assignment in Smart Home

2018 IEEE Symposium on Computers and Communications (ISCC), 2018
The popularization of the Internet of Things (IoT) encouraged a rapid growth in the number of wireless devices. Wireless networks experience serious coexistence problems due to interference caused by devices using the same frequency (mainly, 2.4 GHz). This problem is more serious when the environment has many wireless devices close to each other, such ...
Francisco R. P. da Ponte, Kilvia L. A. de Almeida, Rafael L. Gomes, Joaquim Celestino Jr., Walisson F. Pereira, Nelson L. S. da Fonseca   +5 more
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Channel Assignment Techniques

1996
Channel assignment techniques are used extensively in frequency reuse systems to assign time-frequency resources to each user. There are many methods of allocating a channel upon a new call arrival or handoff attempt. A good channel allocation algorithm is the one that yields high spectral efficiency for a specified quality of service (including link ...
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