Selective handover for traffic balance in mobile radio communications

Abstract

Efficient spectrum utilization is one of the most important issue in all mobile radio systems. Selective Handover for Traffic Balance (SHOT) is proposed which can improve the time domain frequency efficiency of cellular systems.If the traffic of a cell increases temporarily such that the resource utilization rate exceeds a threshold, SHOT compulsively hands some calls over to the appropriate adjacent cells. This results in balancing traffic loads among cells. Three algorithms are proposed and examined through computer simulations. The simulations reveal that SHOT improves the traffic performance by about 50% under the condition that offered traffic is uniformly distributed in the areas when the number of channel of each cell is 10.

A Survey of Self Organisation in Future Cellular Networks

“…A number of papers have focused on optimising such traffic shaping strategies to minimise trade off in terms of hand over overheads and interference [56], [62]- [66]. These papers all refer to the pioneering paper [56] that presented a simple but seminal idea of selecting least loaded cells among candidate neighbour cells for handover based on LB.…”

“…A number of papers have focused on optimising such traffic shaping strategies to minimise trade off in terms of hand over overheads and interference [56], [62]- [66]. These papers all refer to the pioneering paper [56] that presented a simple but seminal idea of selecting least loaded cells among candidate neighbour cells for handover based on LB. A comprehensive review of LB balancing algorithms using the traffic shaping approach and other approaches have been presented in [66] along with a general mathematical framework that models the underlying principles of a variety of LB strategies.…”

“…On the other hand, handover parameter adaptation to trigger forced handovers of ongoing calls to shed extra load to neighbouring cells, is a more straightforward approach [56], [62], [64], [68]. Authors in [68] presented a handover based approach for LB exclusively for LTE.…”

“…The need for load balancing mechanisms to mitigate the effects of natural spatio-temporally varying user distributions was realised immediately after the advent of commercialised cellular communication systems [56]. A large number of research papers since then have addressed this problem and have proposed a variety of very useful load balancing strategies some of which even reach the required level of scalability, stability and agility and achieve the desired SO behaviour [57], [58].…”

Impact of High-Mobility Radio Jamming in Large-Scale Wireless Sensor Networks

“…For modeling a radio jamming attack, a general transmission loss model of radio signal is adopted as described in [7]. The interference signal strength at a distance of r is represented as in Equation1, where G is a random noise.…”