QoS-driven adaptive resource allocation for mobile wireless communications and networks
نویسنده
چکیده
QoS-Driven Adaptive Resource Allocation for Mobile Wireless Communications and Networks. (December 2006) Jia Tang, B.S. Xi’an Jiaotong University, Xi’an, China Chair of Advisory Committee: Dr. Xi Zhang Quality-of-service (QoS) guarantees will play a critically important role in future mobile wireless networks. In this dissertation, we study a set of QoS-driven resource allocation problems for mobile wireless communications and networks. In the first part of this dissertation, we investigate resource allocation schemes for statistical QoS provisioning. The schemes aim at maximizing the system/network throughput subject to a given queuing delay constraint. To achieve this goal, we integrate the information theory with the concept of effective capacity and develop a unified framework for resource allocation. Applying the above framework, we consider a number of system infrastructures, including single channel, parallel channel, cellular, and cooperative relay systems and networks, respectively. In addition, we also investigate the impact of imperfect channel-state information (CSI) on QoS provisioning. The resource allocation problems can be solved efficiently by the convex optimization approach, where closed-form allocation policies are obtained for different application scenarios. Our analyses reveal an important fact that there exists a fundamental tradeoff between throughput and QoS provisioning. In particular, when the delay constraint becomes loose, the optimal resource allocation policy converges to the water-filling scheme, where ergodic capacity can be achieved. On the other hand, when the QoS constraint gets stringent, the optimal policy converges to the channel inver-
منابع مشابه
A Framework for Mobile Wireless Networks with an Adaptive QoS Capability
The rapid deployment of mobile computing and interactive multimedia applications leads to the need for a mobile wireless network with a wide range of QoS support. This paper introduces the concept of Adaptive QoS, which provides a flexible and robust environment for mobile users. An Adaptive QoS based system can be realized through the use of proxy modules and a pre-allocation scheme. The proxy...
متن کاملAdaptive QoS Mechanism for Wireless Mobile Network
Wireless mobile multimedia communications have been greatly increased in the number of users, diversity of applications and interface technologies. Wireless mobile networks are being evolved and integrated into IP based core network, so it is necessary to provide sufficient QoS (Quality of Service) mechanism to provide enhanced user’s satisfaction. In this paper, we propose a new adaptive QoS m...
متن کاملAsymptotic Close to Optimal Resource Allocation in Centralized Multi-band Wireless Networks
This paper concerns sub-channel allocation in multi-user wireless networks with a view to increasing the network throughput. It is assumed there are some sub-channels to be equally divided among active links, such that the total sum rate increases, where it is assumed each link is subject to a maximum transmit power constraint. This problem is found to be a non-convex optimization problem and i...
متن کاملEnd-to-end Dynamic Adaptive QoS Provisioning over GPRS Wireless Mobile Network
The General Packet Radio Service (GPRS) offers performance guaranteed packet data services to mobile users over wireless frequency-division duplex links with time division multiple access, and core packet data networks. This paper presents a dynamic adaptive guaranteed quality-of-service (QoS) provisioning scheme over GPRS wireless mobile links by proposing a guaranteed QoS media access control...
متن کاملA QoS-based charging and resource allocation framework for next generation wireless networks
Wireless networks are evolving to include Internet access to interactive multimedia and video conferencing as well as traditional services such as voice, email and web access. These new applications can demand large amounts of network resources, such as bandwidth, to achieve the highest levels of quality (e.g. picture quality). In conjunction with this trend, charging and resource allocation sy...
متن کامل