摘要如今的蜂窝系统是一个典型的基于客户服务的中心式通信网络。任何通信的发生必须通过基站，设备之间不能以任何形式之间交流。在时延、系统资源使用、能量消耗和干扰管理的角度来看，这种通信结构显然不是最高效的。传统的蜂窝通信另一个致命的缺点是小区边缘效应，它限制了高效、高速率的通信。自组织的P2P网络，提升了设备间的交流与合作性。一些高层的分析表明，把P2P通信应用于蜂窝系统中能够提升网络容量，减少能量消耗和增大覆盖范围。但是，许多实际的问题还有待于深入研究。比如，把P2P应用到蜂窝系统的一个典型问题就是传统P2P的网络资源和干扰管理是分布式的，严格的干扰管理和QoS是很难达到的。而对于蜂窝通信，严格的QoS是很有必要的。本文就提出一种基于蜂窝通信的P2P，并满足了蜂窝通信对高频谱利用率和QoS的要求。63014

关键词  P2P连接  蜂窝连接  资源干扰管理   发现信号  碰撞解决  资源复用RF蓝图

毕业设计说明书（论文）外文摘要

Title         Applications of P2P and Relay  In cellular networks                                        

Abstract Today’s cellular system is a typical centralized client-server based communication network. Any communication taking place has to go through base stations. Devices do not interact directly in any manner with other devices in the network. This type of communication infrastructure is evidently not the most efficient, in terms of delay, system resource usage, power consumption and interference control. Another critical drawback of the traditional cellular infrastructure that limits high data rate, high efficiency communication is the well-known cell edge effect. The advent of self-organizing peer-to-peer (P2P) networks has improved interaction and collaboration among devices. High level analysis results have shown that P2P communications applied to cellular networks is a promising way to increase total network throughput, reduce power consumption, and improve coverage. It is therefore a perfect complement to today’s cellular infrastructure. However, many practical issues of adopting such a communication model have yet to be fully studied. A particular difficulty in applying conventional P2P to cellular networks is that resource and interference control is distributed. Tight interference and QoS (quality of service) control is thus hard to achieve. This presents a serious issue to a cellular network as providing stringent QoS is essential. This paper provides a P2P communication mechanism overlaying today’s cellular networks while satisfying the stringent spectral efficiency and QoS requirements of a cellular system.  

Keywords  P2P connections, cellular connections, resource and interference control, discovery signal, collision resolution, resource reuse, RF blueprint

1 引言 1

1.1 研究的背景 1

1.2 研究的意义 1

1.3 本文主要研究内容和章节安排 2

2 传统P2P模型 2

2.1 P2P (Peer to Peer)的定义及优缺点 2

2.2 典型的P2P通信方式 3

2.3 隐藏设备问题