Statistical Delay-Bounded Quality-of-Service Guarantee for Time-Sensitive Multimedia Transmissions over Cooperative Wireless Networks

协作无线网络上时间敏感多媒体传输的统计延迟限制服务质量保证

• 批准号: 1408601
• 负责人: Xi Zhang
• 金额: $ 31.71万
• 依托单位: Texas A&M Engineering Experiment Station
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2020-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1408601&HistoricalAwards=false
• 关键词: Statistical; Delay; Bounded; Quality; Service

One of the most important services in the next-generation mobile wireless networks is to transmit real-time multimedia data, including video and audio. However, multimedia data need to be timely delivered within the required time period called delay-bound, because any received multimedia data exceeding its delay bound is considered useless and discarded. But, because of randomly time-varying wireless channels and interferences, the deterministic delay-bound requirements for high-volume multimedia wireless transmissions are practically infeasible. Thus, the statistical delay-bounded quality of service (QoS) guarantee theory is developed as an alternative solution to achieve wireless multimedia transmissions where we guarantee the delay-bound with a small violation probability. Availability of techniques capable of statistical delay-bounded QoS guarantee over cooperative wireless networks with mitigated interference would be a breakthrough in the next-generation wireless network research. The objective of this research is to conduct the basic studies on how to extend and implement the statistical delay-bounded QoS guarantee theory for supporting multimedia traffics over interference mitigated cooperative wireless networks. The engineering approach lies in the development of cross-layer optimization and cooperative distributed multi-antenna based architecture and algorithms to support the statistical delay-bounded QoS guarantee. The proposed framework will form a basis for deriving the novel cooperative effective-capacity and game theories for optimal power control over interference-mitigated cooperative wireless networks. Also, the proposed research will be well integrated with PI's educational plan in developing the new graduate/undergraduate curricula/course-labs at Texas A&M University.While the statistical delay-bounded QoS guarantee theory has been shown to be a powerful technique and useful perform metric for supporting the time-sensitive multimedia transmissions over mobile wireless networks, how to efficiently apply and implement this technique/performance-metric through employing various emerging advanced wireless communications technologies has neither been well understood nor thoroughly studied. To overcome the above challenge, this project proposes to develop a set of cooperative-wireless networking based architectures, algorithms, and schemes through cross-layer design to support diverse statistical delay-bounded QoS and users' subjective measure of quality of experience (QoE) requirements for mobile users, while mitigating the interferences caused by coexisting links and mobile user cooperation. The proposed framework will be mainly based on the cooperative distributed multiple-input-multiple-output (MIMO) system to increase the coverage and capacity for multimedia wireless networks. But, the cooperative distributed MIMO network imposes new designing issues on the coordination, resource allocation, and diverse mobile users' delay-bounded QoS/QoE guarantees. Furthermore, due to multiple cooperative users, the transmit power is distributed over multiple transmitters at different locations. Consequently, the interfering range caused by cooperation is considerably enlarged, lowering the spatial frequency-reuse efficiency and thus decreasing wireless network?s capacity. To solve the aforementioned problems, the PI proposes the following research plans, goals, and activities: 1) Develop statistical delay-QoS/delay-QoE aware cross-layer architecture for optimal base-station selection in the cooperative distributed MIMO system; 2) Develop statistical delay-QoS/delay-QoE driven cooperative-effective-capacity and cooperative-game theories based framework for optimal power control algorithms and interference management; 3) Design interference-mitigated cooperative wireless network-coding schemes to enhance the statistical delay-QoS/delay-QoE guarantees in multi-hop Ad Hoc wireless networks; 4) Extend two-dimension to three-dimension delay-QoE characterization by taking into account the delay-bound violation and buffer-overflow probabilities; 5) Develop modeling and analysis techniques, and simulation-tools/testbeds to validate and evaluate the proposed mobile networks' architectures, theories, algorithms, and schemes.

下一代移动的无线网络中最重要的业务之一是传输实时多媒体数据，包括视频和音频。然而，多媒体数据需要在被称为延迟界限的所需时间段内被及时递送，因为任何超过其延迟界限的接收到的多媒体数据被认为是无用的并且被丢弃。但是，由于随机时变的无线信道和干扰，确定性的大容量多媒体无线传输的延迟限制的要求实际上是不可行的。因此，统计延迟有界的服务质量（QoS）保证理论的发展作为一种替代解决方案，以实现无线多媒体传输，我们保证延迟约束与一个小的违规概率。在协作无线网络中提供统计延迟受限的QoS保证并减轻干扰将是下一代无线网络研究的一个突破。本研究的目的是进行基础研究，如何扩展和实施的统计延迟有界的QoS保证理论，支持多媒体业务的干扰减轻合作无线网络。工程方法在于开发跨层优化和基于协作分布式多天线的架构和算法，以支持统计延迟限制的QoS保证。建议的框架将形成一个基础，推导出新的合作有效容量和博弈理论的最优功率控制干扰减轻合作无线网络。此外，拟议的研究将很好地结合PI的教育计划，在开发新的研究生/本科生课程/课程实验室在得克萨斯州A& M大学。虽然统计延迟有界的QoS保证理论已被证明是一个强大的技术和有用的性能指标，支持时间敏感的多媒体传输在移动的无线网络，如何通过采用各种新兴的先进无线通信技术来有效地应用和实现该技术/性能度量既没有被很好地理解也没有被彻底地研究。为了克服上述挑战，本项目提出开发一套基于协作无线网络的架构、算法和方案，通过跨层设计来支持移动的用户的不同统计延迟限制的QoS和用户的主观体验质量（QoE）要求，同时减轻共存链路和移动的用户协作所造成的干扰。建议的框架将主要基于协作分布式多输入多输出（MIMO）系统，以增加多媒体无线网络的覆盖范围和容量。但是，协作分布式MIMO网络的协调，资源分配，和不同的移动的用户的延迟约束的QoS/QoE保证提出了新的设计问题。此外，由于多个合作用户，发射功率分布在不同位置的多个发射机上。因此，由合作引起的干扰范围被大大扩大，降低了空间频率复用效率，从而降低了无线网络？的能力。为了解决上述问题，PI提出了以下研究计划、目标和活动：1）在协作分布式MIMO系统中开发统计延迟QoS/延迟QoE感知的跨层架构，用于最优基站选择; 2）开发统计延迟QoS/延迟QoE驱动的协作有效容量和基于协作博弈理论的最优功率控制算法和干扰管理框架; 3）设计干扰抑制的协作无线网络编码方案，以增强多跳Ad Hoc无线网络中的统计时延QoS/时延QoE保证：4）通过考虑时延界违反和缓冲区溢出概率，将二维时延QoE表征扩展到三维; 5）开发建模和分析技术以及仿真工具/测试床，以验证和评估所提出的移动的网络的架构、理论、算法和方案。