Results 221 to 230 of about 20,540 (261)
Some of the next articles are maybe not open access.
Adaptive channel allocation for wireless PCN
Mobile Networks and Applications, 1999In cellular networks, forced call terminations due to handoff call blocking are generally more objectionable than new call blocking. In order to maintain an acceptable call dropping probability rate, we propose, in this paper, two new guard channel schemes: an adaptive one – New Adaptive Channel Reservation (NACR) – and a dynamic one – Predictive ...
Beylot, André-Luc, Boumerdassi, Selma
openaire +2 more sources
Channel allocation evaluation for a multi-channel MAC protocol
2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2013In recent years, the use of multi-channel MAC protocols in the Wireless Sensor Networks has attracted the attention of many researchers. In this paper, we analyze the different techniques that are used in multi-channel MAC protocols proposed for WSNs. These protocols often use either a centralized or a distributed manner to select and allocate channels.
Diab, Rana +2 more
openaire +2 more sources
A mobile channel allocation scheme for avoiding channel interference
The 6th International Conference on Soft Computing and Intelligent Systems, and The 13th International Symposium on Advanced Intelligence Systems, 2012In this paper, a dynamic mobile channel allocation method for avoiding channel interference are presented. It uses reproductive algorithm of genetic algorithm. If the mobile station requests the channel allocation in mobile networks, switching center is assigned a channel to mobile station that belongs to each base station.
Seo-Jung Heo +2 more
openaire +1 more source
2007 Third International Conference on Wireless and Mobile Communications (ICWMC'07), 2007
In cellular networks, wireless channels are a scarce resource and therefore must be used efficiently. Allocation of channels to individual cells can be done either by a centralized method or a distributed method. Under both approaches, available channels can be either pre-allocated to cells initially or can be allocated to them whenever the need for ...
Jianchang Yang, D. Manivannan
openaire +1 more source
In cellular networks, wireless channels are a scarce resource and therefore must be used efficiently. Allocation of channels to individual cells can be done either by a centralized method or a distributed method. Under both approaches, available channels can be either pre-allocated to cells initially or can be allocated to them whenever the need for ...
Jianchang Yang, D. Manivannan
openaire +1 more source
Inertia-based distributed channel allocation
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly, 2009We consider distributed channel allocation on planar conflict graphs describing interference couplings of wireless networks. We observe that the corresponding graph colouring problem is riddled by topologic defects that are annihilated when they meet the network boundary, or possibly another defect. Greedy algorithms lead to random walk -like motion of
Juha-Matti Koljonen +3 more
openaire +1 more source
Energy efficiency and channel allocation in P2PWRAN
2013 IEEE Wireless Communications and Networking Conference (WCNC), 2013IEEE 802.22 is proposed for reusing the TV channels with cognitive radio technology to build Wireless Regional Area Networks (WRANs). The cellular topology of a WRAN makes the spectrum management easy. However, this topology reduces the network capacity significantly, because in one slot only one user can be allocated with a channel.
Huaizhou Shi +3 more
openaire +1 more source
Channel allocation in tiered cellular networks
WCNC. 1999 IEEE Wireless Communications and Networking Conference (Cat. No.99TH8466), 2003In a tiered cellular system the cells are split into two regions: the inner tier and the outer tier. These two regions can be treated as logically separate cells. Due to the smaller radii of the inner tier cells, a frequency plan with greater reuse can be employed for the inner tier cells than for the original (untiered) system, or the outer tier cells.
Vikram Srinivasan +2 more
openaire +1 more source
A Distributed Algorithm for Dynamic Channel Allocation
Mobile Networks and Applications, 2002Recent demand for mobile telephone service has been growing rapidly while the electro-magnetic spectrum of frequencies allocated for this purpose remains limited. Any solution to the channel assignment problem is subject to this limitation, as well as the interference constraint between adjacent channels in the spectrum.
Azzedine Boukerche +2 more
openaire +1 more source
Channel allocation in SDMA cellular systems
IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211), 2002Spatial division multiple access (SDMA) is recognized as a promising technique for improving capacity in future cellular systems, by exploiting the spatial filtering capability of adaptive antennas. In SDMA systems, in-cell users can share the same channel, making the channel allocation strategy play an important role in the system performance. In this
Paulo Cardieri, Theodore S. Rappaport
openaire +1 more source
Channel allocation in cellular radio networks
Computers & Operations Research, 1997zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chang, KN, Kim, S Kim, Sehun
openaire +2 more sources