Abstract
In cellular mobile networks, efficient handoff performance entails minimizing unnecessary handoffs without risking desired handoffs which could lead to increased dropped calls. An adaptive relative-threshold (hysteresis) algorithm has been proposed in [1] to effectively identify and prevent unnecessary handoffs. However, results here show that this adaptive algorithm can cause undesired cell-dragging. We propose an adaptive, absolute-threshold algorithm to be used in combination with the adaptive relative-threshold algorithm to mitigate cell dragging. The performance of the algorithm is investigated for an IS-136 TDMA system using a powerful network level simulator. Results show that, depending on the propagation environment, the proposed algorithm can reduce received signal strength (RSS) based handoff triggers by up to 75% while maintaining a lower call drop-rate and less cell dragging than fixed threshold algorithms.
| Original language | English |
|---|---|
| Pages (from-to) | 1603-1607 |
| Number of pages | 5 |
| Journal | IEEE Vehicular Technology Conference |
| Volume | 2 |
| Publication status | Published - May 1998 |
| Externally published | Yes |
| Event | Proceedings of the 1998 48th IEEE Vehicular Technology Conference, VTC'98. Part 2 (of 3) - Ottawa, Can Duration: 18 May 1998 → 21 May 1998 |