A Survey on Cost Effective Survivable Network Design in Wireless Access Network

In today’s technology, the essential property for wireless communication network is to exhibit as a dependable network. The dependability network incorporates the property like availability, reliability and survivability. Although these factors are well taken care by protocol for wired network, still there exists huge lack of efficacy for wireless network. Further, the wireless access network is more complicated with difficulties like frequencies allocation, quality of services, user requests. Adding to it, the wireless access network is severely vulnerable to link and node failures. Therefore, the survivability in wireless access network is very important factor to be considered will performing wireless network designing. This paper focuses on discussion of survivability in wireless access network. Capability of a wireless access network to perform its dedicated accessibility services even in case of infrastructure failure is known as survivability. Given available capacity, connectivity and reliability the survivable problem in hierarchical network is to minimize the overall connection cost for multiple requests. The various failure scenario of wireless access network as existing in literature is been explored. The existing survivability models for access network like shared link, multi homing, overlay network, sonnet ring, and multimodal devices are discussed in detail here. Further comparison between various existing survivability solutions is also tabulated.