Request Mechanisms to Reduce the Contention Period in 802.16: A Comparison
Request Mechanisms to Reduce the Contention Period in 802.16: A Comparison
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802.16 中减少争用周期的请求机制：比较
DOI：
10.1007/978-0-387-84839-6_11
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发表时间：
2008
影响因子：
11.2
通讯作者：
L. Orozco
中科院分区：
文献类型：
--
作者：
Jesús Delicado;Francisco M. Delicado Martínez;L. Orozco
如今，大量以严格的端到端要求为特征的应用需求很高。宽带无线接入（BWA）的发展应使这些应用程序的无处不在和成本效益的部署。IEEE802.16标准是目前正在开发的有前途的宽带无线接入技术之一。IEEE 802.16定义了要由该标准实现的物理和介质访问控制机制的原理。在所提出的MAC协议下，基站（BS）负责分配用户站（SS）所需的带宽。SS在预定义的争用周期期间发出其带宽请求。由于用户数据和信令数据在同一频带上传输，因此设计有效的信令机制以减少竞争周期的时间和空间长度是目前大量研究的主要焦点。在本文中，我们介绍和评估两种新的带宽请求机制，并比较它们的性能与信令机制提出的标准。
Nowadays, a large number of applications characterized by stringent end- to-end requirements are on high demand. The development of Broadband Wireless Access (BWA) should enable the ubiquitous and cost-effective deployment of such applications. The IEEE 802.16 standard is currently one of the promising BWA tech- nology under development. The IEEE 802.16 defines the principles of the Physical and Medium Access Control mechanisms to be implemented by the standard. Under the proposed MAC protocol, the Base Station (BS) is responsible of allocating the bandwidth required by the Subscriber Stations (SS). A SS issues its bandwidth re- quest during a pre-defined contention period. Since the user data and signalling data are transmitted over the same band, the design of efficient signalling mechanism aiming to reduce the time and space length of the contention period is nowadays the main focus of a large number of studies. In this paper, we introduce and evaluate two novel bandwidth request mechanisms and compare their performance with the signalling mechanisms proposed by the standard.