White Papers
Performance Evaluation of VoIP over EV-DO Rev A
1xEV-DO, a part of the cdma2000® family, has been enhanced to Rev A to improve data throughput and to enable rich multi-media services such as voice over internet protocol (VoIP). EV-DO is designed to be IP friendly and therefore does not support circuit channels. This design approach leads to an obvious question: how well does EV-DO Rev A support VoIP? In this article, we present simulation results for VoIP over EV-DO Rev A. We show that EV-DO can support 40 Erlangs of VoIP traffic per sector using a 1.25 MHz carrier while maintaining the latency below 230 msec and still have bandwidth left for supporting high-speed data simultaneously with voice. We explain some of the advanced features in the EV-DO Rev A airlink, scheduler design, and quality of service (QoS) implemented to achieve this.
EV-DO Rev B Technical Whitepaper
EV-DO Revision B (Rev B) is an evolutionary step on the CDMA2000 roadmap, providing improved support for multimedia content, substantially improved packet data, and VoIP performance, all with minimal capital investment. In simplest terms, Rev B extends EV-DO to multi-carrier operation by serving users simultaneously over multiple 1.25 MHz carriers. Rev B offers compelling benefits to a wireless operator and its subscribers. The standard for Rev B was published by the Third Generation Partnership Project 2 (3GPP2) and the Telecommunications Industry Association (TIA) in 2006.
Mobile VoIP over 1xEV-DO Technical Whitepaper
The combination of high performance mobile broadband and Voice over IP (VoIP) stands to usher in a new era for the wireless industry. This paper makes a direct comparison between VoIP over EV-DO and 1xRTT circuit-based networks. To date, CDMA2000 1xRTT has been the most spectrally efficient mobile voice network available, but the combination of VoIP and EV-DO – or broadband mobile VoIP – will represent a dramatic improvement over all previous generations of mobile voice technology.
The Growth and Evolution of CDMA2000 1xEV-DO
The fastest mobile wireless networks in the world, from Seoul to San Diego and Sao Paolo, are powered by CDMA2000 1xEV-DO – the first commercial 3G technology to deliver data rates exceeding 2 Mbps. 1xEV-DO’s success is evidenced by strong subscriber growth, increased ARPU, wide handset availability and low cost network deployments.
All-IP 1xEV-DO Wireless Data Networks Technical Whitepaper
CDMA2000 1xEV-DO delivers data rates exceeding 2 Mbps in 1.25 MHz of spectrum, offering bandwidth efficiency for data traffic that is three to four times greater than other voice-centric standards such as CDMA2000 1xRTT and W-CDMA. Airvana’s unique All-IP network architecture helps operators further reduce their operating costs by using an IP-based backhaul network to connect 1xEV-DO radio nodes (or base stations) to Radio Network Controllers. This reduces backhaul and network equipment costs for operators and creates a fault-tolerant and scalable network.
This paper provides an overview of how a 1xEV-DO network works. It explains the basic network architecture, provides an overview of the 1xEV-DO airlink and discusses the benefits of Airvana’s All-IP architecture.
Using 1xEV-DO to Launch Residential Broadband Services
CDMA2000 1xEV- is the first third-generation (3G) mobile air interface standard that offers the data rates required to launch a competitive residential broadband service. With proper network design and planning, operators can use 1xEV-DO to launch a service that has operating profits in the second year of its operation and a payback period of less than five years—attractive financial returns by any measure. This paper analyzes the business case for using 1xEV-DO to offer a wireless residential broadband service. It begins with a primer on 1xEV-DO network architecture and air interface.