Resilience Analysis under the Impact of Cell Failures in the Practical Telecommunication base Station Networks

With the importance of wireless telecommunication services increasing in our daily lives and society operation, the demand for reliable telecommunication networks rapidly grows. However, in contrast to the high reliability of the core telecom systems, the base stations have low redundancy and high failure rate, which lead to a bottleneck in the reliability improvement of the telecommunication network. To figure out the characteristic of the reliability of the base station network, we analyze the compensation mechanism upon the failures of the base station cell by practice data. The results show that the loss of demands caused by base station failures can be compensated by two types of resilience: intrasector resilience and inter-sector resilience. Intra-sector resilience describes the demands absorption occurred between co-sector cells in a base station. Inter-sector resilience is manifested in the demand absorption by the neighbor base stations. We observe these two types of resilience in practical cases and analyze their compensation effects. The results of this paper show that resilience widely exists in base station network and act as an important factor in ensuring the reliability of telecommunication network.