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IEEE/ICACT20260346 Question.1 Questioner: yangyn@dsp.ac.cn 2026-02-09 오후 12:03:12	IEEE/ICACT20260346 Answer.1 Answer by Auhor tanghr@dsp.ac.cn 2026-02-09 오후 12:03:12
How does the two-stage relay selection strategy in UW-LFRR prioritize between path stability and computational efficiency, and were any trade-offs observed in practice?	UW-LFRRs two-stage relay selection strategy prioritizes path stability by first attempting to graft traffic back to the original backbone (Phase I) with minimal detour (at most 2 extra hops) and low computational complexity O(\|Ku\|), only resorting to a more complex search within the branch-off region (Phase II) with O(\|Ku\| log\|Ku\|) complexity when the backbone is completely disrupted. This approach achieves high path stability with minimal computational cost in most failure scenarios, while Phase II ensures connectivity when needed, resulting in a practical balance between stability and efficiency.

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