Prioritized handoff strategies using channel borrowing-based dynamic channel assignment

K. L. Yeung; T. S.P. Yum; M. M. Choy

doi:10.1109/PIMRC.1996.568480

Prioritized handoff strategies using channel borrowing-based dynamic channel assignment

K. L. Yeung
, T. S.P. Yum
, M. M. Choy

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

3 Citations (Scopus)

Abstract

Since call termination as a result of handoff failure is considerably less desirable from the user's viewpoint than the blocking of a new call, a prioritized handoff scheme is essential especially for microcellular systems where the mobile cell boundary crossing rate is high. Therefore an efficient DCA should give priority to handoff calls. In this paper, two DCA strategies for prioritized handoff are proposed based on a DCA called BDCL (borrowing with directional channel locking): (i) FCA with BDCL for handoff calls, and (ii) BDCL with channel reservation. FCA with BDCL for handoff calls allows a handoff call to borrow a channel using BDCL strategy if no free nominal channel in the call arrival cell is available. In BDCL with channel reservation, both new call and handoff call can use a borrowed channel. But a fixed number of nominal channels in a cell are reserved for exclusive use of handoff calls. To study the performance of the two proposed strategies, a widely accepted mobility model is adopted. Based on this model, we derive the handoff call arrival rates and channel holding time from the given mean mobile speed. The performance of the two proposed algorithms is studied by simulations and we found that they are very effective in reducing the handoff call blocking probability while not affecting the new call performance.

Original language	English
Pages (from-to)	1230-1234
Journal	IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Volume	3
DOIs	https://doi.org/10.1109/PIMRC.1996.568480
Publication status	Published - 1996
Externally published	Yes
Event	Proceedings of the 1996 7th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'96. Part 3 (of 3) - Taipei, Taiwan Duration: 15 Oct 1996 → 18 Oct 1996

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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abstract = "Since call termination as a result of handoff failure is considerably less desirable from the user's viewpoint than the blocking of a new call, a prioritized handoff scheme is essential especially for microcellular systems where the mobile cell boundary crossing rate is high. Therefore an efficient DCA should give priority to handoff calls. In this paper, two DCA strategies for prioritized handoff are proposed based on a DCA called BDCL (borrowing with directional channel locking): (i) FCA with BDCL for handoff calls, and (ii) BDCL with channel reservation. FCA with BDCL for handoff calls allows a handoff call to borrow a channel using BDCL strategy if no free nominal channel in the call arrival cell is available. In BDCL with channel reservation, both new call and handoff call can use a borrowed channel. But a fixed number of nominal channels in a cell are reserved for exclusive use of handoff calls. To study the performance of the two proposed strategies, a widely accepted mobility model is adopted. Based on this model, we derive the handoff call arrival rates and channel holding time from the given mean mobile speed. The performance of the two proposed algorithms is studied by simulations and we found that they are very effective in reducing the handoff call blocking probability while not affecting the new call performance.",

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N2 - Since call termination as a result of handoff failure is considerably less desirable from the user's viewpoint than the blocking of a new call, a prioritized handoff scheme is essential especially for microcellular systems where the mobile cell boundary crossing rate is high. Therefore an efficient DCA should give priority to handoff calls. In this paper, two DCA strategies for prioritized handoff are proposed based on a DCA called BDCL (borrowing with directional channel locking): (i) FCA with BDCL for handoff calls, and (ii) BDCL with channel reservation. FCA with BDCL for handoff calls allows a handoff call to borrow a channel using BDCL strategy if no free nominal channel in the call arrival cell is available. In BDCL with channel reservation, both new call and handoff call can use a borrowed channel. But a fixed number of nominal channels in a cell are reserved for exclusive use of handoff calls. To study the performance of the two proposed strategies, a widely accepted mobility model is adopted. Based on this model, we derive the handoff call arrival rates and channel holding time from the given mean mobile speed. The performance of the two proposed algorithms is studied by simulations and we found that they are very effective in reducing the handoff call blocking probability while not affecting the new call performance.

AB - Since call termination as a result of handoff failure is considerably less desirable from the user's viewpoint than the blocking of a new call, a prioritized handoff scheme is essential especially for microcellular systems where the mobile cell boundary crossing rate is high. Therefore an efficient DCA should give priority to handoff calls. In this paper, two DCA strategies for prioritized handoff are proposed based on a DCA called BDCL (borrowing with directional channel locking): (i) FCA with BDCL for handoff calls, and (ii) BDCL with channel reservation. FCA with BDCL for handoff calls allows a handoff call to borrow a channel using BDCL strategy if no free nominal channel in the call arrival cell is available. In BDCL with channel reservation, both new call and handoff call can use a borrowed channel. But a fixed number of nominal channels in a cell are reserved for exclusive use of handoff calls. To study the performance of the two proposed strategies, a widely accepted mobility model is adopted. Based on this model, we derive the handoff call arrival rates and channel holding time from the given mean mobile speed. The performance of the two proposed algorithms is studied by simulations and we found that they are very effective in reducing the handoff call blocking probability while not affecting the new call performance.

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Y2 - 15 October 1996 through 18 October 1996

ER -

Prioritized handoff strategies using channel borrowing-based dynamic channel assignment

Abstract

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