Abstract
As the demand increases, future networks will follow the trends of network variety and service flexibility, which requires heterogeneous type of network deployment and reliable communication method. In practice, most communication failure happens due to the bad radio link quality, i.e., high-speed users suffers a lot on the problem of radio link failure, which causes the problem of communication interrupt and radio link recovery. To make the communication more reliable, especially for the high mobility users, we propose a novel communication handoff mechanism to reduce the occurrence of service interrupt. Based on computer simulation, we find that the reliability on the service is greatly improved.
Highlights
To satisfy the increasing demand on the service rate, multiple types of base stations (BSs) are considered in the future network deployment, which consists of heterogeneous networks
Users are associated to a big or a small BS according to its best downlink reference signal receiving power
We find that the small BS muted subframe (a.k.a almost blank subframes (ABS)) induced gain on RLF reduction is over 60 %, and in the case of large bias configuration such as 6 dB and 9 dB, both the high-speed and low-speed users enjoy this gain
Summary
To satisfy the increasing demand on the service rate, multiple types of base stations (BSs) are considered in the future network deployment, which consists of heterogeneous networks. To solve the above problem and reduce the service interrupt rate, we propose a reliability enhanced handoff mechanism, which avoids the high-speed users to be handed over to the small BS due to its possible short stay, and muting the small BS signal transmission for some time to alleviate the interference when the high-speed use passing by. In this way, communication overhead can be greatly saved due to the avoidance on the unnecessary handoff and radio link recovery process.
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