The proliferation of wireless devices and their ever increasing influence on our day-to-day life is very evident and seems irreplaceable. This exponential growth in demand, both in terms of the number of devices and Quality of Service (QoS) had spawned the concept of cross-layer optimization several years ago. The primary goal of the cross-layer approach was to liberate the strict boundary between the layers of the traditional Open Systems Interconnection (OSI) protocol stack. The initial decade focused on establishing the theoretical feasibility of this revolutionary concept and gauging the effectiveness and limits of this idea. During the next phase, the advent of software defined radios (SDR) accelerated the growth of this domain due to its added flexibility. Yet, there has been a gaping abyss between solutions designed in theory and ones deployed in practice. To establish this, we first present an elaborate survey of the cross-layer protocol stack literature. Next, we briefly discuss how a commercial off-the-shelf (COTS), low SWaP (Size, Weight, and Power) embedded SDR (e-SDR) was transformed into a standalone, fieldable transceiver. Thereafter, we provide the software design ethos that focuses on efficiency and flexibility such that the optimization objectives and cross-layer interactions can be reconfigured rapidly. To demonstrate our claims, we provide results from extensive outdoor over-the-air experiments in various settings with up to 10-node network topologies. The results from the field trials demonstrate high reliability, throughput, and dynamic routing capability. To the best of our knowledge, this is the first time in literature, a COTS e-SDR has been leveraged to successfully design a cross-layer optimized transceiver that is capable of forming an ad hoc network that provides high throughput and high reliability in a ruggedized, weatherized, and fieldable form factor.
翻译:无线装置的扩散及其对我们日常生活的日益增强的影响非常明显,而且似乎不可替代。这种需求指数式增长,无论是从装置数量和服务质量(Qos)来看,都催生了跨层优化的概念。跨层办法的首要目标是解放传统开放系统互连协议堆叠层之间的严格界限。最初十年的重点是建立这一革命概念的理论可行性,并衡量这一理念的优化和极限。在下一阶段,软件定义的电台(SDR)的出现加速了这个域的加速增长,因为其增加了灵活性。然而,在理论中设计的解决办法与实践中部署的解决办法之间存在差距。为了确立这一点,我们首先对跨层协议堆积文献进行详尽的调查。我们简要地讨论了商业离线(COTS),低SWapp(Sizion,Weight,和Power)嵌入的STDR(e-DR) 已经转变为一个独立、可实地可移动的网络结构,随后,我们从高层次设计结果中展示了一种高层次的动态数据。我们从高层次设计到高层次的系统设计,我们提供了一种高层次设计,从高层次的系统设计结果。我们能够展示一个高层次设计,从高层次的高度数据转换到高层次数据。我们从直流数据转换到高层次数据。我们从直流、高层次设计到高层次数据,我们提供了一种高层次设计, 向上显示的、高层次设计,从直流流流流数据流数据流数据,我们提供了一种高层次数据。