Abstract
Interference in femtocells due to neighboring femtocells and macrocells is one of the major issues. Handover should be made to reduce interference, if and only if, when resources are available. Otherwise, it will further degrade network performance. Resource management should be made in an efficient manner that will not cause interference between macrocells and neighboring femtocells. Since distance between macro base station (MBS) and Femto Access Point (FAP) is short, therefore, it is very hard to sustain low handover probability when macro user (MUE) moves from MBS to FAP. We proposed handover algorithm for uplink co-channel interference mitigation that will make decision of handover on the basis of time-to-stay (TTS) and Signal to interference plus noise ratio (SINR) thresholds along with efficient resource management mechanism to reduce number of handovers and also resolve interference problem.
Highlights
Interference in femtocells due to neighboring femtocells and macrocells is one of the major issues
The main advantage of low power base station such as Pico cell, micro cell and femtocells is that it bring network close to UE and they can enjoy high data rates [7]. femto access point (FAP) or home base station which can extend indoor coverage and can integrate with existing technologies i.e. GSM, Long-Term Evolution (LTE), WiMax etc on radio access and backhaul connection can be made by using broadband connection i.e. Optical fiber, DSL etc
Macrocell radio resource allocation: Technique of fractional frequency reuse (FFR)-GC was proposed in a study [18], which is used in this research as a measure to identify either sub-band is available for handover and to make decision in a way that will help in optimizing the interference as much as possible
Summary
Interference in femtocells due to neighboring femtocells and macrocells is one of the major issues. In a study [20], handover strategy for hand-in and hand-out are proposed based on SINR and TTS of MUE/FUE in the macrocell/ femtocells.
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