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Distributed and dynamic resource management strategies for multimedia networks using cooperative game theoretic approaches.

机译:使用合作博弈论方法的多媒体网络分布式和动态资源管理策略。

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摘要

Recently, multimedia applications such as Internet TV, peer-to-peer (P2P) multimedia streaming/broadcasting, video conferencing, and on-line gaming are proliferating over resource constrained network infrastructures such as the Internet, overlay networks, peer-to-peer networks, and wireless networks. In order to enable these various services to become truly ubiquitous and operate transparently, multimedia users need to simultaneously compete for the scarce resources of such networks.Existing resource management solutions have been designed and developed traditionally using centralized approaches, where a central controller (or a resource manager) decides the resource allocation among the participating users in such a way that the overall system utility (i.e. the system welfare) is maximized. Moreover, they also implicitly or explicitly assume that users are static, altruistic, and most often, homogeneous. However, in general, this centralized approach becomes infeasible as the number of users increases, because the amount of information that needs to be exchanged as well as the computational complexity required for finding the optimal allocations increase significantly. These solutions can also be undesirable from the perspective of self-interested and autonomous users, who may not comply with the specified rules in order to maximize their own utilities. Moreover, the solutions become inefficient for heterogeneous users, as the solutions do not consider users with different utilities, requirements or characteristics, including the users' bounded rationality. Also, since they are designed for static users, the solutions cannot efficiently adapt to dynamic changes in users' interactions, requirements, resource availability, and information availability.This dissertation addresses the abovementioned challenges by developing a distributed multi-user resource management framework: resource reciprocation strategies for cooperative users, as required for instance in P2P networks, and resource division strategies for multiple non-cooperative users competing for the same network resources. This enables multimedia users that dynamically and repeatedly interact with each other in a dynamically varying network environment to strategically maximize their utilities, or fairly negotiate their resource divisions, based on their heterogeneous processing abilities. The interactions of the users in the coalition for resource management are modeled as games based on the users' characteristics and the availability of resources. In the case where each user can obtain resources only by cooperatively associating with the other users and the associated users' reciprocal behaviors can only be statistically estimated by learning based on locally available information, we model the interactions of the users as a stochastic game. Based on this approach, each user can identify its foresighted strategy which can lead to a maximum expected long-term utility in its dynamic and repeated interactions. Note that the foresighted strategy of each user may result in different performances depending on each user's bounded rationality, i.e., information acquisition and processing capability. However, if available resources are limited and users are competing for the resources, then the participating users need to agree on a particular resource division. The resource negotiations among the participating users are modeled as bargaining problems. A solution to the bargaining problems enables the users to fairly and optimally determine their resource division, based on utilities. We extend and generalize the existing bargaining solutions by successfully deploying bargaining powers of each user, which are determined based on each user's multimedia characteristics, channel conditions, delay constraints, etc.The proposed framework enables individual users to achieve higher efficiency outcomes from both a user's perspective and a system's perspective, when users are strategically maximizing their own performance. This can be done by enabling devices to proactively and strategically interact with each other in order to maximize their own performance based on their asymmetric information, and ability to form beliefs and heterogeneous knowledge, rather than obliging them to passively comply with rigid, pre-determined, protocols as in current networks and communication systems.
机译:近来,诸如Internet电视,对等(P2P)多媒体流/广播,视频会议和在线游戏之类的多媒体应用程序在诸如Internet,覆盖网络,对等网络等资源受限的网络基础设施上激增网络和无线网络。为了使这些各种服务真正普及并透明地运行,多媒体用户需要同时竞争此类网络的稀缺资源。现有的资源管理解决方案传统上是使用集中式方法设计和开发的,其中使用中央控制器(或中央控制器)。资源管理器)以使整个系统效用(即系统福利)最大化的方式决定参与用户之间的资源分配。此外,他们还隐式或显式地假定用户是静态的,利他的,并且通常是同质的。但是,通常,随着用户数量的增加,这种集中化方法变得不可行,因为需要交换的信息量以及找到最佳分配所需的计算复杂性都大大增加了。从自私和自治用户的角度来看,这些解决方案也是不理想的,他们可能不遵守指定的规则以最大化其自身的效用。此外,由于解决方案不考虑具有不同效用,要求或特征(包括用户有限理性)的用户,因此对于异类用户而言,解决方案变得效率低下。而且,由于它们是为静态用户设计的,因此该解决方案无法有效地适应用户交互,需求,资源可用性和信息可用性方面的动态变化。本文通过开发分布式多用户资源管理框架来解决上述挑战:资源如P2P网络中所要求的,用于合作用户的往复策略,以及用于竞争同一网络资源的多个非合作用户的资源分配策略。这使多媒体用户可以在动态变化的网络环境中动态重复地进行交互,从而根据其异构处理能力在策略上最大化其实用程序或公平地协商其资源分配。基于用户的特征和资源的可用性,将资源管理联盟中用户的交互建模为游戏。如果每个用户只能通过与其他用户协作关联来获取资源,并且只能通过基于本地可用信息进行学习来统计估计关联用户的交互行为,则我们将用户的交互建模为随机游戏。基于这种方法,每个用户都可以确定其前瞻性策略,从而可以在其动态和重复交互中获得最大的预期长期效用。注意,取决于每个用户的有限理性,即,信息获取和处理能力,每个用户的有远见的策略可能导致不同的性能。但是,如果可用资源有限并且用户正在争夺资源,则参与的用户需要就特定的资源划分达成一致。参与用户之间的资源谈判被建模为讨价还价的问题。讨价还价问题的解决方案使用户能够基于实用程序公平,最佳地确定其资源分配。我们通过成功部署每个用户的议价能力来扩展和归纳现有的议价解决方案,议价能力是根据每个用户的多媒体特性,频道条件,延迟限制等因素确定的。所提出的框架使单个用户能够从两个用户的议价中获得更高的效率结果角度和系统角度,即用户从战略上最大化自己的性能。这可以通过使设备能够主动和策略性地进行交互,从而基于其不对称信息以及形成信念和异构知识的能力来最大化其自身的性能,而不是迫使它们被动地遵循严格的,预先确定的,当前网络和通信系统中的协议。

著录项

  • 作者

    Park, Hyunggon.;

  • 作者单位

    University of California, Los Angeles.;

  • 授予单位 University of California, Los Angeles.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2008
  • 页码 305 p.
  • 总页数 305
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-17 11:38:59

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