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Description: Based on the Wimax 802.16e technology, the handoff process has been simulated with one mobile node and three basestations. We found that the speed of traveling has impact on the handoff latency.
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Size: 4096 |
Author: yong |
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Description: 本文提
出了基于功率预留的准入控制策略。首先介绍一种资源分配算法，该算法将可用信
道完全分配从而实现基站发射功率最小化。在此基础上，分别为小区间切换用户和
小区内切换用户设计预留策略，并根据系统的业务载荷自适应地调整功率预留量，
从而实现GOS的最优化。
-there exists a fundamental tradeoff between bandwidth and power. In this thesis, we
propose a novel admission control scheme based on power reservation. Foremost, we
introduce a joint subchannel and power allocation algorithm for WiMAX system, which
minimizes the overall downlink transmit power by utilizing all available subchannels.
Based on this, we propose two power reservation schemes for inter-cell handoff calls and
intra-cell handoff calls, respectively. The amount of reserved power is determined in an
adaptive manner for optimizing the metric of Grade of Service(GoS).
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Size: 3750912 |
Author: punk_812 |
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Description: 本文正是在研究WIMAX/802.16e协议和FMIPv6协议的基础之
上，提出了基于FMIPv6的WIMAX网络快速切换机制，该方案采用跨
层切换的思想，MAC层联合网络层同时进行切换，在链路尚未断开
之前即完成新转交地址(NCOA)获取等功能，从而加快了切换进程，
减小了切换时延和切换时的丢包率。在提出本切换机制的基础上，本
文在NSZ仿真平台上对所提出的切换方案做了系统性的性能仿真，通
过仿真结果验证了方案的可行性和优越性。
- In this paper, IEEE802.16e standard is described at first. Then an
introduction for the basic knowledge and research in MIPv6 and FMIPv6
protocol is given. A fast handover scheme of WiMAX network which
based on FMIPv6 protocol is suggested, which implements the fast
handover at IP layer associating with MAC layer at the same time.
scheme minimizes handover latency by predicting and preparing
This
the
impending handover in advance. Finally, simulation are carried out to
evaluate the performance of this fast handover scheme. The result of the
simulation shows that the fast handover scheme has good performance.
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Size: 5442560 |
Author: punk_812 |
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Description: 本文在研究IEEE802.16e协议和SIP协议的基础上，提出了利用
SIP解决IEEE802.16接入网络中端到端切换的新方案。该方案采用跨
层切换的设计思想，联合MAC层和应用层SIP协议，在底层链路切换
的同时，完成应用层会话的修改，加快了切换过程，减少了切换时延，
提高了切换成功率。本文基于NS2仿真平台，完成了相应的仿真平台
搭建过程，实现了SIP协议模块和WiMAX协议模块的融合，扩展了SIP
协议模块的部分消息，最终在基于SIP协议模块和WiMAX协议的统一
NS2平台上实现了基于WiMAX接入、支持SIP扩展功能的SIP会话建
立和修改过程。
- On the basis of study of WiMfAX and SIP, a new mechanism using
SIP to achieve end-to-end handoff under IEEE802.16e access networks is
Ob
proposed
handoffs,
in this thesis. The mechanism adopts a cross-layer design
which means that the l}iIAC layer handoff procedure can
interleaved with that of the application layer. During the handoff at link
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Size: 4511744 |
Author: 汪舵 |
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Description: 垂直切换仿真，在LTE和WIMAX之间的切换。-Vertical handoff simulation, switching between LTE and WIMAX.
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Size: 35840 |
Author: 何强 |
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Description: exten vertical hand over to handoff between lte an d wimax
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Size: 6144 |
Author: engnoor |
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Description: simulation and performance analsis of vector handoff between wifi and wimax using mih
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Size: 4096 |
Author: 12132321 |
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