International Journal of Engineering Science Invention ISSN (Online): 2319 – 6734, ISSN (Print): 2319 – 6726 www.ijesi.org Volume 2 Issue 1 ǁ January. 2013 ǁ PP.53-57
Load Balancing By Using Paging Technique for Cellular Network 1
S.NITHYA, 2K.KARTHIKA
1
ME, CSE, EASA College of engineering and technology, Anna University, Chennai. Assistant professor, CSE, EASA College of engineering and technology, Anna University, Chennai.
2
Abstract: Practical load balancing framework that improves upon existing strategies. These techniques are portable to a broad range of prevalent architectures, including massively parallel machines as well as a task selection mechanism that can preserve or improve communication locality. To provide a multiple coverage area, the different tiers are associated with each cell. Each mobile terminal can be paged in any tier of a multi tier hierarchical cellular network. Paging requests are balanced in different waiting queues of different tiers, and the load balancing among them is achieved probabilistically among n tiers. In the process of paging schemes are the hierarchical pipeline paging scheme, the hierarchical sequential paging scheme, and the hierarchical blanket paging scheme can be apply to minimize the delay constraint and paging cost.
Keywords– Paging, cellular network, load balancing, HBP, HSP, HPP I. INTRODUCTION Hierarchical cellular architecture, which can achieve increased network capacity while avoiding the pitfall of cell splitting, is a candidate solution to address mobile users’ continuously surging demand with limited frequency resources. Location management, as a critical element in maintaining quality of service for mobile users, remains a challenging problem for hierarchical cellular networks due to increased complexity. This optimal load balancing of paging schemes for hierarchical cellular networks. Examples of multitier hierarchical cellular networks include macro cell-microcell two-tier networks, macro cell microcell- Pico cell three-tier networks, and macro cell-microcell- minicell-picocell four-tier networks. load balance problem is defined as how to minimize the total paging cost using load balancing under the constraint that the average total delay including both queuing delay and paging delay 1.1 Cellular network A cellular network is a radio network distributed over land areas called cells, each served by at least one fixed-location transceiver known as a cell site or base station. When joined together these cells provide radio coverage over a wide geographic area. This enables a large number of portable transceivers (e.g., mobile phones, pagers, etc.) to communicate with each other and with fixed transceivers and telephones anywhere in the network, via base stations, even if some of the transceivers are moving through more than one cell during transmission. Cellular networks offer a number of advantages over alternative solutions: increased capacity reduced power use larger coverage area reduced interference from other signals 1.1.1
Cell signal encoding To distinguish signals from several different transmitters, frequency division multiple access (FDMA) and code division multiple access (CDMA) were developed. With FDMA, the transmitting and receiving frequencies used in each cell are different from the frequencies used in each neighboring cell.
II. RELATED WORK a) Reduction of paging cost Reduction of paging cost [1] can be achieved by concurrent search scheme; the concurrent search approach is able to reduce the average paging cost by 25%. More importantly, this is achieved without an increase in the worst case paging delay or in the worst case paging cost. Depending on the total number of mobile users to be located, total number of cells in the network, and the probabilistic information about the www.ijesi.org
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