Collaborative Research: Characterizing Protocol Interaction in NEWS: A Network Environment Wireless State Service

该合作项目集中在四个主要研究重点：(i)统计表征协议交互的详细研究，（ii）可扩展的基于代理的服务，为所有节点提供状态信息，（iii）利用智能天线的媒体访问控制（MAC）协议，（iv）使用逆优化作为表征算法协议交互的框架。无线移动自组织网络中网络和MAC层协议交互的重点是在通用定位服务的背景下，该服务提供了一种通过使用智能天线获得移动节点当前位置的机制。这种服务被称为网络环境无线状态服务（Network Environment Wireless State service， NEWS）服务，它被推广到获取节点状态的其他方面，如其本地流量特征、速度和能量使用，以及它的位置；它向系统的其余部分提供当前的“新闻”，即状态。这样的服务可以提高协议的性能，并基于位置和其他状态信息为新兴服务提供信息。该项目还旨在确定协议交互的影响，包括算法和统计，首先在NEWS服务的实现中，其中不同的网络和MAC解决方案是混合和匹配的。此外，该项目还定义了一个基于分层代理的NEWS服务，该服务使用本地交通条件和节点密度来生成（控制）代理，以便在递归定义的网格区域中操作。该协议的设计补充了MAC层解决方案，该解决方案可以利用位置和控制发射功率水平的能力，在适当的网格水平内定向传输。最后，本项目将使用基于逆优化的框架来决定何时在网络层生成代理以获得MAC层的成功传输，即优化层间交互。

This collaborative project concentrates on four main research thrusts: (i) a detailed study to statistically characterize protocol interaction, (ii) a scalable agent-based service to provide all nodes with state information, (iii) a Media Access Control (MAC) protocol utilizing smart antennas, and, (iv) the usage of inverse optimization as a framework for characterizing algorithmic protocol interaction. The focus on the network and MAC layer protocol interaction in wireless mobile ad-hoc networks is in the context of a generalized location service that provides a mechanism to obtain the current position of a mobile node by using smart antennas. This service, called Network Environment Wireless State service (NEWS) service, is generalized to obtain other aspects of node state, such as its local traffic characteristics, velocity, and energy usage, in addition to its location; it provides current "news," i.e., state, to the rest of the system. Such a service can improve the performance of protocols and provide information for emerging services based on location and other state information. This project also aims at identifying the impact of protocol interaction, both algorithmic and statistical, first in an implementation of a NEWS service wherein different network and MAC solutions are mixed and matched. Furthermore, this project defines a hierarchical agent-based NEWS service that uses local traffic conditions and node density to spawn (slay) agents to operate in a recursively defined grid area. The design of this protocol complements a MAC layer solution that can take advantage of location and the ability to control transmit power level to directionally transmit within the appropriate grid level. Finally, this project will use a framework based on inverse optimization to decide when to spawn agents at the network layer to obtain successful transmissions at the MAC layer, i.e., to optimize the interlayer interaction.