Abstract:

This study proposes to new method of bandwidth reservation system.High mobile traffic over entire globe has increased the demand for MoU which in turn have resulted in poor network capacity and efficiency. This paper aims to describe Multi-class Bandwidth Reservation Scheme to enhance data capacity in GSM network, that will improve network capacity and efficiency. The one-to-one real time position measurement of MS eliminates the need to use excessive bandwidth reservation in neighboring cells. The use of NCBP and HCDP in bandwidth measurement approach is advantageous over FDMA, TDMA and CDMA type. Radius of size Threshold Distance (TD) for NRZ reduces blind selection of the start point of Bandwidth reservation for handoff requests and reduces the signaling traffic overhead. To reduce the computational power requirement at the MSs for prediction of MS the Next Cell Algorithm is employed. The capacity enhancement for the GSM network via these simple approaches is advantageous in cost control, real implication and reduced computational usage.

 

Method:

Nagarajan (1999) studied the congestion phenomenon in GSM mobile network and proposed a study that considers congestion control scheme. He proposed appropriate choice of throttles and an algorithmic procedure to size the thresholds so as to yield good performance during congestion. The author also addresses some implementation issues related to the throttles. Finally, it briefly considers the effects of delays for the onset and abatement messages in reaching the user parts on the performance and parameters of the congestion control scheme [1].


Co-channel interferences occur necessarily in a cellular system when fixed relay stations (RSs) are deployed. To avoid the co-channel interferences, an effective frequency allocation (FA) scheme is essentially required. Lee et al. 2009 proposed an improved FA scheme with cooperative relay in the system. The proposed scheme can maximize the cell capacity through minimizing co-channel interferences and achieving the cooperative source diversity gain. Through a computer simulation, they demonstrate the proposed FA scheme with cooperative relay can increase average cell, user, and edge user throughputs compared with those for conventional systems under the IEEE 802.16j environment [2].


Co-channel interferences in cellular systems are also reduced by cell sectorization and improvement of the Chip Energy/Others Interference(Ec/Io). These technologies improve speech quality and service of mobile communications. One such study has been proposed by Choi and Noh, 2005. In order to efficient cell sector and to improve the Ec/Io of the pilot channel in CDMA mobile communication systems, they analyze and compare the wide-beam trisector cell(WBTC) with the narrow-beam trisector cell(NBTC) as a method for cell sectorization. The NBTC method was compared with the WBTC method, using the results of both a theoretical analysis and a simulation, in order to examine its effectiveness and validity. As a result, they confirmed the efficient cell sector method to minimize interference from adjacent base stations and to increase cell coverage [3].


Load balancing problem in GSM network has been resolved by Tolli, et. al 2003 to quantify some of the benefits of different intra-layer load balancing methods in GSM system. The performance of two different load balancing algorithms are studied in irregular network scenario. The benefits of 1) changing the power budget handover threshold between adjacent cells depending on the load differences of the neighboring intra-system/layer cells, and 2) prioritising the handover candidates based on the load differences within some predefined tuning/prioritisation margins are investigated by dynamic simulations for real-time (speech) traffic. The obtained results show that the overall capacity of the network can be significantly improved (up to 30-14%) by utilising intra-system load balancing algorithms, in irregular simulation scenario [4].