排序方式: 共有414条查询结果,搜索用时 15 毫秒
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分析了WiMAX标准的分类方法、标准名称、通过时间、发布时间和当前状态,并从参考模型、网络控制与管理系统、网络参考模型、通用分组汇聚子层和媒质无关切换等方面对WiMAX最新标准IEEE802.19g-2007标准进行了研究.最后,对IEEE 802.16k标准的原理和应用进行了详细介绍. 相似文献
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Jae-Woo So 《Wireless Personal Communications》2008,47(2):247-263
While the voice over Internet protocol (VoIP) services is expected to be widely supported in wireless mobile networks, the
performance of VoIP services has not previously been evaluated in the IEEE 802.16e orthogonal frequency division multiple
access (OFDMA) system taking the adaptive modulation and coding scheme into consideration. To support real-time uplink service
flows, three different types of scheduling have been designed in the IEEE 802.16e standard: the unsolicited grant service
(UGS), the real-time polling service (rtPS), and the extended rtPS (ertPS). In this paper, we compare the three real-time
scheduling algorithms in terms of the performance of VoIP services by using the analytical and simulation models that we developed.
相似文献
Jae-Woo SoEmail: |
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提出了一种基于WiMax 802.16e标准的LDPC码解码器结构,该结构采用了基于修正的SP算法的串并行结构,支持19种协议规定的校验矩阵及码字长度,以及六种不同码率的LDPC码的解码,并在是否使用分层解码两种情况下进行了仿真验证,降低了解码延时和误码率. 相似文献
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Mandeep Singh Ramdev Rohit Bajaj Ruchika Gupta 《New Review of Information Networking》2020,25(1):71-82
ABSTRACT Wireless Interoperability for Multiple Access (WiMAX) is one of the emerging fields of high-speed wireless communication that has enormous capabilities due to its range and the connection speed. Like wireless local area networks (LANs), WiMAX networks implement multiple quality of service (QoS) frameworks at the Media Access Control (MAC) level for assured data, voice, and video services. The question of ensuring QoS is basically how to distribute available resources to users in order to satisfy QoS parameters such as latency, jitter and throughput requirements. IEEE 802.16 standard does not have any particular guidelines on scheduling of incoming and outgoing data. This has caught the attention of researchers working on WiMAX. This article discusses the various issues in WiMAX along with a classification of various scheduling approaches based upon the type of scheduler for the sake of better understanding the scheduling problem and analyzing various available theories. 相似文献
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利用IEEE802.16宽带无线接入标准中在MAC层引入了完整的QoS机制,可以为用户提供电信级的QoS支持的特点,在深入分析IEEE 802.16协议的业务分类及现有的各种调度算法的基础上,结合无线网络,提出了一种针对不同业务流类型的调度架构. 相似文献
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宽带无线接入网技术作为一种有效的宽带解决方案而受到人们高度重视。本文主要介绍几种宽带无线接入方式及其特点、应用范围、优缺点等,并作了对比,供相关业者参考。 相似文献
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通过对IEEE 802.16标准Mesh模式的PHY层特性的分析,给出了在应用开发中确定PHY层和参数的方法.该方法对MAC层进行minislot调度具有重要意义. 相似文献