NeTS: Small: Doubling Cellular Capacity by Full Duplex Communications

NeTS：小型：通过全双工通信使蜂窝容量加倍

• 批准号: 1527750
• 负责人: Shivendra Panwar
• 金额: $ 47.5万
• 依托单位: New York University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-10-01 至 2018-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1527750&HistoricalAwards=false
• 关键词: NeTS; Small; Doubling; Cellular; Capacity

Traditional radio transceivers are generally not able to receive and transmit on the same frequency band because of the crosstalk between the transmitter and the receiver circuits. Given that the received signal over the air is one million times or more weaker than the transmitted signal, it is very difficult, if not impossible, to detect the received signal under internal interference from the transmitter. Thus, to avoid this interference, today's communication systems rely on half duplex transmission, typically transmitting and receiving at different times or in different frequency bands. The full duplex technology developed in this project allows for transceivers to receive and transmit in the same frequency band, at the same time, potentially doubling data rates. Given the enormous market size of the wireless industry, combined with the pressing need for solutions to solve the 'spectrum crunch', full duplex technology thus offers tremendous societal and commercial impact. This project addresses the fundamental challenges when incorporating full duplex radios in a cellular network to unlock the full potential of this technology. Specifically, the project consists of three inter-related components: (i) a radio front-end design that allows multiple antenna gains in conjunction with full duplex operation; (ii) a smart scheduler for full duplex base stations that coordinates the maximum set of transmissions with least mutual interference, while maintaining fairness among the mobiles; (iii) a joint routing and scheduling algorithm that fully utilizes full duplex enabled relay terminals. The technologies developed span physical, medium access control, and network layers, and jointly coordinate the air-interface and the backhaul. The theory and algorithms will be validated by over-the-air and end-to-end experiments.

由于收发电路之间存在串扰，传统的无线电收发机一般不能在同一频带上收发。考虑到空中接收到的信号比发射信号弱100万倍或更多，在发射机内部干扰下检测接收到的信号是非常困难的，如果不是不可能的话。因此，为了避免这种干扰，今天的通信系统依赖于半双工传输，通常在不同的时间或不同的频段发射和接收。该项目开发的全双工技术允许收发器在同一频段内接收和发送，同时可能使数据速率翻倍。鉴于无线行业的巨大市场规模，再加上对解决“频谱紧张”的解决方案的迫切需求，全双工技术因此带来了巨大的社会和商业影响。该项目解决了在蜂窝网络中整合全双工无线电的基本挑战，以释放该技术的全部潜力。具体来说，该项目包括三个相互关联的组件：(i)无线电前端设计，允许多个天线增益与全双工操作相结合；（ii）全双工基站的智能调度器，以最小的相互干扰协调最大的传输集，同时保持移动设备之间的公平性；（iii）充分利用全双工使能中继终端的联合路由和调度算法。所开发的技术跨越物理层、介质访问控制层和网络层，并共同协调空中接口和回程。该理论和算法将通过无线和端到端实验进行验证。