ITR: A New Generation Wireless System with Integrated Cellular and Mobile Relaying Technologies

随着因特网的出现，现在预计无线数据服务将在几年内超过对语音服务的需求。 对无线数据服务的爆炸性需求正迫使电信和网络研究界重新思考一些众所周知的解决方案，以解决此类网络中的基本容量有限问题。 在这个建议中，制定了一个新的概念，用于解决当前无线系统中的容量有限的问题，并描述了一种成本效益的方法来实现这个概念。 研究人员的主要概念是通过“跳频”到未经许可的频段（如工业、科学和医疗频段（ISM）频段（2.4 - 2.5 GHZ））中的频率，并将流量转移到非拥塞区域，来规避蜂窝网络中的拥塞。 研究人员建议通过部署称为移动的中继站（MRS）的新设备来集成蜂窝和移动的中继技术。 利用MRS，移动的主机可以通过切换（或“跳变”）到未许可频带来与位于不同小区中的基站收发台（BTS）通信。 以这种方式，移动到拥塞小区中的移动的主机可以继续其否则将被丢弃的呼叫;同样地，可以通过经由中继从附近小区借用信道来服务在拥塞小区中通常将被阻塞的新呼叫。 其结果是，现有蜂窝系统的掉话概率和新呼叫阻塞概率可以得到实质性的改善。 这又导致用户数量的空前增加（即，容量）。 虽然所提出的下一代无线系统的硬件复杂性将略高于传统系统的硬件复杂性，但在任何时候改进的网络性能、容量和连接性方面的预期益处将远远超过硬件复杂性的这种轻微增加。 该项目的成功可能会导致下一代无线网络标准的重大范式转变。 预计该项目还将加强位于布法罗的纽约州立大学的电信和网络教育及研究计划，并可能为高级电信和网络中心铺平道路，该中心将容纳电气工程系、计算机科学与工程系以及其他系的教师和研究生。

With the advent of Internet, it is now anticipated that wireless data services will within a few years surpass the demand for voice services. The explosive demand for wireless data services is forcing the telecom and networking research communities to rethink some of the well-known solutions to the limited capacity problem which is fundamental in such networks. In this proposal, a new concept for solving the limited capacity problem in current wireless systems is formulated, and a cost-effective approach to implement the concept is described. The researchers main concept is to circumvent congestions in cellular networks by "hopping" to frequencies in the unlicensed band, such as the Industrial, Scientific, and Medical Band (ISM) band (2.4 - 2.5 GHZ) and by diverting traffic to noncongested areas. The researchers propose to integrate cellular and mobile relaying technologies by deploying new devices called mobile relaying stations (MRS's). With MRS's, a mobile host can communicate with the base transceiver stations (BTS's) located in a different cell by switching (or "hopping") to the unlicensed frequency band. In this way, a mobile host moving into a congested cell can continue its call that would otherwise be dropped; likewise, a new call that would normally be blocked in a congested cell could be served by borrowing channels from a nearby cell via relaying. As a result, handoff-dropping probability and new call blocking probability of existing cellular systems can be substantially improved. This, in turn, leads to an unprecedented increase in the number of users (i.e., capacity) of these systems if one utilizes the proposed new concept in conjunction with cell splitting. While the hardware complexity of the proposed next-generation wireless systems will be slightly higher than that of the conventional systems, the anticipated benefits in terms of improved network performance, capacity, and connectivity at all times will far outweigh this slight increase in hardware complexity. The success of this project could lead to a major paradigm shift in the next-generation wireless network standards. It is also anticipated that this project will enhance the telecommunications and networking education and research programs at the State University of New York at Buffalo, and could pave the way for a Center for Advanced Telecommunications and Networking that houses faculty and graduate students from the Department of Electrical Engineering, Department of Computer Science and Engineering, as well as other departments.