CityU Institutional Repository >
3_CityU Electronic Theses and Dissertations >
ETD - Dept. of Computer Science >
CS - Doctor of Philosophy >
Please use this identifier to cite or link to this item:
|Title: ||Joint resource management and traffic scheduling on WiMAX access networks|
|Other Titles: ||Ji yu WiMAX jie ru wang luo zhong zi yuan fen pei yu ye wu diao du de yan jiu|
基於 WiMAX 接入網絡中資源分配與業務調度的研究
|Authors: ||Wang, Hanwu (王漢武)|
|Department: ||Department of Computer Science|
|Degree: ||Doctor of Philosophy|
|Issue Date: ||2010|
|Publisher: ||City University of Hong Kong|
|Subjects: ||Radio resource management (Wireless communications)|
Telecommunication -- Traffic -- Management.
IEEE 802.16 (Standard)
|Notes: ||CityU Call Number: TK5103.4873 .W36 2010|
v, 189 leaves : ill. 30 cm.
Thesis (Ph.D.)--City University of Hong Kong, 2010.
Includes bibliographical references (leaves 178-184)
|Abstract: ||This thesis presents our intensive researches on resource management and traffic scheduling with respect to different kinds of WiMAX access networks. Although the WiMAX physical and MAC signaling mechanism has been standardized in IEEE 802.16 standard, the key performance challenges, i.e., the radio resource management and traffic scheduling are still remained undefined and to be implemented by vendors. The resource management is how to distribute the available transmission bandwidth among different competing users and also make full use of the system resource with high efficiency; the traffic schedule is how to organize and coordinate the traffic transmission for various types of sessions to meet their desired performance objectives. We emphasize on the unsolved issues and design corresponding schedulers to be implemented in WiMAX PMP, OFDMA, Mesh and MMR networks. All these proposed schedulers can facilitate to fill the gap between WiMAX system provider and user application requirements, so that this promising technology can be well applied into the practical application system with desired performance satisfactory.
As for the WiMAX PMP scheduling in Chapter 2, we propose a so-called scalable and adaptive resource scheduling (ARS) scheme, to deal with both the uplink and downlink traffic transmissions in WiMAX PMP networks, so as to achieve the high bandwidth utilization, stable system throughput, and desired performance requirements. As for the WiMAX OFDMA scheduling in Chapter 3, we propose an optimized scheduling scheme to achieve both optimized system resource efficiency and a complete QoS implementation. As for the WiMAX mesh scheduling in Chapter 4, we propose a novel fairness model, a traffic scheduling scheme and a spatial reuse exploitation scheme to achieve the key performance objectives of global fairness, high efficiency and QoS guarantee. As for the WiMAX MMR scheduling in Chapter 5, we design effective schedulers implemented at each hop of RS to achieve both the desired end to end flow control and congestion control. An appropriate rate controller is designed to enable the scheduler to effectively regulate its both ingress and egress traffic rate in a distributed manner regarding the network status and user demand as well. In summary our proposed scheduling schemes regarding all those WiMAX networks hold the following distinguished features:
● Each proposed scheme tackles with the unsolved issues in a specific WiMAX access system with clear motivations, and implements appropriate scheduling approaches and mechanisms to achieve the desired performance goals.
● Each proposed scheme not only considers the different user requirements, but takes the network system status variation into account, so that both user demand and system resource efficiency can be achieved.
● Each proposed scheme handles both the high priority traffics to meet their various QoS constrains and also low priority ones to meet their fairness requirements. The traffic rate and system throughput can be adaptively regulated to the desired levels according to the performance requirements.
Furthermore in Chapter 6 we creatively carry out a brand-new research work-applying the WiMAX technology into the maritime communications. To tackle with those maritime-oriented challenges and facilitate the deployment of WiMAX based maritime networks, relevant schemes including maritime channel state specification, maritime channel transmission adaptation and maritime channel utilization are proposed and elaborated. This novel research topic is the first of its kind to apply the high speed WiMAX transmission technology into the maritime environment, which will help and facilitate to construct a promising and significant broadband wireless maritime communication network to satisfy the requirements of different maritime users and applications in the future.|
|Online Catalog Link: ||http://lib.cityu.edu.hk/record=b3947812|
|Appears in Collections:||CS - Doctor of Philosophy |
Items in CityU IR are protected by copyright, with all rights reserved, unless otherwise indicated.