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首页> 外文期刊>Canadian journal of electrical and computer engineering >An efficient wireless resource management scheme to support handoff data recovery in packet-switched cellular multicast networks
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An efficient wireless resource management scheme to support handoff data recovery in packet-switched cellular multicast networks

机译：在分组交换蜂窝多播网络中支持切换数据恢复的有效无线资源管理方案

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摘要

To support data transfer reliability similar to that of a fixed multicast network, migrating terminals in a packet-switched cellular wireless multicast network supporting reliable multicast data transfer need to recover lost data during handoffs before they can merge into the respective multicast groups in the new cells. The multicast groups in packet-switched wireless networks typically share resources on a statistical multiplexed basis. To minimize impact on other terminals, this paper proposes to allow part of a multicast group's assigned bandwidth to be shared by the handoff terminals for transient data recovery using the proposed Weighted Fair Share (WFS) method with optimal weight selection. Handoff terminals are admitted into the new cell using the proposed Multicast Connection Admission Control (MCAC) scheme. These methods together constitute the Fair and Efficient Wireless Multicast resource management Scheme (FEWMS) presented in this paper. Under FEWMS, a migrating terminal can quickly recover lost data and merge into the existing multicast group during a handoff. Simulations using self-similar traffic sources show that the proposed method reduces the handoff failure probability of migrating terminals and the average packet delay of the multicast group, and increases the overall system throughput, compared with an existing proposal. Evaluations of different performance measures show that the system throughput does not give a complete picture of the system performance, as different resource management schemes may have substantial impact on other performance measures such as average delay and handoff failure probability.
机译：为了支持类似于固定多播网络的数据传输可靠性，支持可靠多播数据传输的分组交换蜂窝无线多播网络中的迁移终端需要在切换期间恢复丢失的数据，然后才能合并到新小区中的各个多播组中。 。分组交换无线网络中的多播组通常在统计复用的基础上共享资源。为了最大程度地减少对其他终端的影响，本文建议使用具有最佳权重选择的建议加权公平份额（WFS）方法，允许切换终端共享多播组分配的带宽的一部分，以进行瞬时数据恢复。使用提议的多播连接准入控制（MCAC）方案，将切换终端准入新小区。这些方法共同构成了本文提出的公平有效的无线组播资源管理方案（FEWMS）。在FEWMS下，迁移终端可以在切换期间快速恢复丢失的数据并合并到现有的多播组中。使用自相似流量源进行的仿真表明，与现有方案相比，该方法降低了迁移终端的切换失败概率和多播组的平均分组延迟，并提高了整体系统吞吐量。对不同性能指标的评估表明，系统吞吐量无法全面了解系统性能，因为不同的资源管理方案可能会对其他性能指标（例如平均延迟和切换失败概率）产生重大影响。

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