This paper introduces the types of handover and influence factors, and proposes methods to prevent handover failure.
本文介绍了切换的种类及影响切换的原因，给出了解决切换失败的方法。
Compared with GH, experiment results show that TGH has the advantage of lower call blocking ratio, handover failure probability and better QoS.
实验结果表明相对于GH(保证切换)策略，TGH降低了新呼叫的阻塞率、切换失败率，得到更好的服务质量。
Compared with GH, experiment results show that TGH has the advantage of lower call blocking ratio, handover failure probability and better QoS.
实验结果表明相对于GH(保证切换)策略，TGH降低了新呼叫的阻塞率、切换失败率，得到更好的服务质量。
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