| Abstract |
In the deployment of high-density LTE (Long Term Evolation) small cell, a mobile user equipment (UE) will handover frequently. If the handover of a UE is based on signal strength, a UE with real-time streaming will be affected by a UE with non real-time streaming. In order to maintain the quality of service (QoS) of a UE with real-time streaming, we implement a QoS Handover Scheme (QHS) on ITRI's (Industrial Technology Research Insititute) small cell platform. We decide each UE’s handover priority based on traffic type and data rate. In this way, a UE with high QoS requirement has a higher priority during handover. Additionally, the QHS can judge whether the target eNB can bear the data rates of all handover UEs. When the target eNB can’t bear all the QoS requirement of all the handover UE, the QoS of the high priority is guaranteed by delaying the handover of low priority UE. In order to implement our QHS, we add QoS detection module, which can detect the traffic type of all UE and measure their data rates. In addition, we add handover priority module, which can decide UE’s handover priority. Finally, we add QoS handover module on a small cell to do QoS handover. In order to validate whether our proposed QHS can improve UE’s QoS, we implement the aforementioned modules on ITRI’s small cell platform. After the implementation, we compare the original ITRI handover mechanism and the proposed QHS handover mechanism in terms of handover delay, data rate, packet loss ratio, and packet delay. |
|---|
