QUALCOMM Demonstrates Significant EV-DO Milestones with High-Capacity VoIP Over Rev. A and High-Speed Data Over Rev. B
Company Achieves 114 Simultaneous VoIP Connections in a Single EV-DO Rev. A Sector and 9.3 Mbps Peak Data Rate in a Live, Over-the-air Demonstration of Rev. B
qualcomm.com
SAN DIEGO — March 23, 2007 — QUALCOMM Incorporated (Nasdaq: QCOM), a leading developer and innovator of Code Division Multiple Access (CDMA ) and other advanced wireless technologies, today announced a major milestone on the evolutionary path of EV-DO - a demonstration of 114 simultaneous voice over Internet protocol (VoIP) calls over a single 1.25 MHz channel in an isolated sector. In commercial deployment scenarios, EV-DO Rev. A's capacity is expected to be up to 68 users in a 1.25 MHz single embedded sector, or about 475 simultaneous users in 10 MHz (a single embedded sector with seven 1.25 MHz carriers). The demonstration validates EV-DO's stability and maturity in supporting high-capacity, high-quality VoIP services - an important element of the rich voice and media applications that drive consumer demand. Modems with commercial application-specific integrated circuits in both the handsets and prototype network were used. The field test to demonstrate 114 simultaneous VoIP calls was conducted using an isolated EV-DO Rev. A sector employing a single 1.25 MHz channel in order to stress Rev. A algorithms, protocols and design parameters.
This VoIP field test employed a number of advanced Rev. A techniques to achieve voice quality and capacity comparable to traditional circuit-switched voice services, including:
Mobile receive diversity, equalization, interference cancellation and IP overhead reduction algorithms, which collectively optimize network capacity
End-to-end quality of service and enhanced speech-processing algorithms, which improve voice quality and ensure a consistent user experience
“EV-DO Rev. A's high-quality VoIP capabilities lead the way to combining VoIP with a wide variety of mobile data services,” said Dr. Sanjay K. Jha, chief operating officer of QUALCOMM. “Wireless service trends are leading toward delivering rich, simultaneous multimedia services over a converged data network, and VoIP plays a key role in this migration.”
EV-DO Rev. A allows more integrated IP-based voice, video and data services, such as rich voice, push-to-connect, low-delay gaming and packet-switched video telephony. These services, and the converged devices that support them, allow operators to provide customers with new differentiated services and a high-quality user experience.
EV-DO Rev. B - the next step in EV-DO's evolutionary path - allows operators to combine Rev. A channels for increased performance and capacity. QUALCOMM achieved a significant milestone in this evolution with a live, over-the-air demonstration of Rev. B that achieved a 9.3 Mbps downlink data rate in 5 MHz. This first implementation of Rev. B is available as a software upgrade to existing Rev. A channel cards. The Rev. B standard supports peak data rates of up to 14.7 Mbps. Rev. B offers broadband performance in a fully mobile environment with a consistent user experience across the coverage area. Furthermore, Rev. B networks will be 100 percent backward compatible and fully support all existing Rev. A devices and services. Additionally, the handover between Rev. B and Rev. A/Rel. 0 is seamless. This seamless handover allows for a hotspot deployment of a Rev. B system within the already deployed Rev. A system.
“Through progressive evolution, EV-DO is enabling operators to offer new service bundles supporting a mix of low-latency and high data-rate applications, from VoIP to mobile broadband, all on a single converged network.” Jha continued. “These demonstrations underscore the strength of the evolution path and its success in providing converged broadband services.” |
