NeTS: Small: Collaborative Research: Learning to help: Trading spectrum ownership for performance

NeTS：小型：协作研究：学习帮助：用频谱所有权换取性能

• 批准号: 1017172
• 负责人: Chunsheng Xin
• 金额: $ 12.5万
• 依托单位: Norfolk State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1017172&HistoricalAwards=false
• 关键词: NeTS; Small; Collaborative; Research; Learning

In contrast with most existing dynamic spectrum access (DSA) paradigms which impose a `foe' relationship between primary users (PUs) and secondary users (SUs), this project investigates a new DSA paradigm which encourages PUs and SUs to help each other by trading spectrum ownership for improved overall performance. Specifically, this project designs two different schemes: (1) Give-And-Take (GAT) and (2) Network Coding + Secondary User Relay (NC+SR). The former does not need to change the radio or the protocol stack of PUs, while the latter assumes that PUs and SUs are capable of performing network coding. In GAT, SUs help deliver the traffic of PUs and in return are allowed to access licensed spectrum in a manner disruptive to PUs. The help constitutes the `give' part, and the disruptive spectrum accesses constitute the `take' part. In NC+SR, SUs help relay PU traffic between PUs. When relaying PU packets, SU relay nodes may encode SU packets onto PU packets via network coding, so that SU packets get a `free ride' on PU packets. Both GAT and NC+SR promise the improved performance of PUs as well as SUs. The project studies the issues of protocol design and performance optimization of the two schemes. Results from this project are expected to encourage incumbent licensed users to embrace DSA to further improve the capacity of wireless network. The project sustains a collaborative research team, and involves both graduate and undergraduate students, particularly the underrepresented minority students,in research.

与大多数现有的动态频谱接入 (DSA) 范式相比，该范式在主要用户 (PU) 和次要用户 (SU) 之间强加了“敌对”关系，本项目研究了一种新的 DSA 范式，鼓励 PU 和 SU 通过交易互相帮助频谱所有权以提高整体性能。具体来说，该项目设计了两种不同的方案：（1）Give-And-Take（GAT）和（2）网络编码+辅助用户中继（NC+SR）。前者不需要改变PU的无线电或协议栈，而后者假设PU和SU能够执行网络编码。在 GAT 中，SU 帮助传送 PU 的流量，作为回报，SU 被允许以破坏 PU 的方式访问许可频谱。帮助构成“给予”部分，而破坏性频谱访问构成“获取”部分。在 NC+SR 中，SU 帮助中继 PU 之间的 PU 流量。当中继PU分组时，SU中继节点可以通过网络编码将SU分组编码到PU分组上，使得SU分组在PU分组上“搭便车”。 GAT 和 NC+SR 都承诺提高 PU 和 SU 的性能。该项目研究了两种方案的协议设计和性能优化问题。该项目的结果预计将鼓励现有许可用户采用 DSA，以进一步提高无线网络的容量。该项目拥有一个合作研究团队，并让研究生和本科生，特别是代表性不足的少数族裔学生参与研究。