SBIR Phase II: Channel Hopping for Increased Capacity on Combined Cellular Voice and Packet Radio Networks

小行星9531396 这个小型企业创新研究第二阶段项目研究了用于蜂窝无线电网络的跳频移动的数据基站。由于话音蜂窝无线电系统必须保持低阻塞概率，即使在忙碌时间，也有20%以上的蜂窝信道容量未被使用。分组无线电系统可以通过在空闲话音信道之间跳频来捕获这种未使用的容量，独立于话音基站和蜂窝电话交换机工作。为了优化性能，移动的数据基站应该选择具有最小同信道干扰的空闲信道。通过这样做，当使用自动重发请求协议时，基站将使移动的终端处的载波干扰比最大化，并使吞吐量最大化。例如，如果在18信道扇区提供的话音业务量是9厄朗，则数据基站可以实现42%的吞吐量改进和28%的覆盖区域增加。这项研究扩展了第一阶段的研究，收集干扰数据，从一个实际的蜂窝无线电系统和测试新的跳频算法对这些数据。该公司还将利用这些数据开发更好的蜂窝语音多址系统和同频干扰模型。如果成功的话，该项目将产生一个智能信道跳频无线电接收机和控制器的工作原型，它将大大增加蜂窝数字分组数据（CDPD）系统的吞吐量和地理覆盖范围。 这项研究的主要商业应用是无线多址通信网络，包括蜂窝无线电、移动的卫星和无线局域网。拟议的研究的主要好处是更经济地使用分组无线电基站，从而为美国消费者提供更实惠的移动的数据服务。

9531396 Jacobsmeyer This Small Business Innovation Research Phase II project investigates a channel hopping mobile data base station for use on cellular radio networks. Because voice cellular radio systems must maintain low blocking probabilities, more than 20% of cellular channel capacity is unused, even during the busy hour. A packet radio system can capture this unused capacity by hopping between idle voice channels, working independently of the voice base station and the cellular telephone switch. To optimize performance, the mobile data base station should select the idle channel with the least co-channel interference. By doing so, the base station will maximize the carrier-to-interference ratio at the mobile terminal and maximize throughput when automatic repeat-request protocols are used. For example, if the offered voice traffic at an 18-channel sector is 9 Erlangs, the data base station can achieve a throughput improvement of 42% and a coverage area increase of 28%. This study extends the Phase I research by collecting interference data from an actual cellular radio system and testing new hopping algorithms against this data. The firm will also use the data to develop better models of the cellular voice multiple access system and co-channel interference. If successful, the project will result in a working prototype of a smart channel hopping radio receiver and controller that will substantially increase the throughput and geographical coverage of the Cellular Digital Packet Data (CDPD) system. The principal commercial applications of this research are wireless multiple access communication networks, including cellular radio, mobile satellite, and wireless local area networks. The primary benefit of the proposed research is more economical use of packet radio base stations, resulting in more affordable mobile data service for the U.S. consumer.