CAREER: Wireless Access Control for Optimal Spectral Efficiency

职业：实现最佳频谱效率的无线访问控制

• 批准号: 9502614
• 负责人: Leandros Tassiulas
• 金额: $ 14万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-09-01 至 2002-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9502614&HistoricalAwards=false
• 关键词: CAREER; Wireless; Access; Control; Optimal

NCR-9502614 Leandros Tassiulas Wireless will be a method of choice for accessing the future broadband integrated services network. In wireless access the main problem is to utilize efficiently the limited spectrum capacity in order to accommodate the large traffic demands that will be generated by Personal Communication Services (PCS). In the digital network there will be enhanced flexibility in signaling and control to support sophisticated schemes. Dynamic resource allocation methods should be employed for network control in order to achieve maximum utilization of the system. The fundamental problem of joint base-station assignment, power control and channel allocation will be investigated here. Such a problem arises during hand-off, when the configuration of the system changes, as well as at the time of a new connection. Furthermore it should be solved in a dynamic fashion during the operation of the system and for system configurations that change randomly. The problem is formulated as an optimization problem that involves continuous and discrete components. The traffic capacity is defined as a quantity that reflects the maximum number of mobiles per channel if the optimal allocation algorithm is employed. Preliminary results for two base stations are reported. The study of the general problem with multiple base stations is proposed. Several approaches are briefly discussed including deterministic models for the limiting traffic capacity, randomized search algorithms including simulated annealing and genetic algorithms, and reuse partitioning. ******* Darleen Fisher Program Manager Networking and Communications Research Program [phone] [phone] (FAX)

NCR-9502614 Leandros Tassiulas 无线接入将是未来宽带综合业务网的一种选择。 在无线接入中，主要的问题是有效地利用有限的频谱容量，以适应将由个人通信服务（PCS）产生的大的业务需求。 在数字网络中，信令和控制的灵活性将得到增强，以支持复杂的方案。 网络控制应采用动态资源分配方法，以实现系统的最大利用率。 联合基站分配，功率控制和信道分配的基本问题将在这里进行调查。 当系统的配置改变时，以及在新连接时，在越区切换期间出现这样的问题。 此外，它应该在系统运行期间以动态的方式求解，并且对于随机变化的系统配置。 该问题被制定为一个优化问题，涉及连续和离散的组件。 如果采用最优分配算法，则业务容量被定义为反映每个信道的移动台的最大数量的量。 报告了两个基站的初步结果。 提出了多基站的一般问题的研究。 几种方法进行了简要讨论，包括确定性模型的限制交通容量，随机搜索算法，包括模拟退火和遗传算法，和重用分区。 ******* Darleen Fisher项目经理网络和通信研究项目 [phone]（703）306-0621（传真）