This is interesting. The telcos want to stay in control of their cell telephone systems, and have a credible way of doing so. Use 3G cellular, and send phone calls using VoIP, but without having to fuss with switching over to other wireless ISPs that may be or may not be reachable in a given location. 3G should provide the headroom needed to make VoIP calls feasible, which is not feasible over the much lower speed 2G bit rates. This avoids having to switch between telco and WiMAX networks, which is messy at best, but perhaps most importantly, it puts the 3G networks to good use. I guess people are not using 3G for the purposes initially invisioned, i.e. to send videos around. So now the telcos can redesign their cellular telephone systems around VoIP, without having to worry about losing control to other ISPs. Bert ----------------------------------------------------- Femtocells pose threat to voice-over-Wi-Fi, cellular basestation deployment Patrick Mannion (03/28/2007 3:58 PM EDT) URL: http://www.eetimes.com/showArticle.jhtml?articleID=198700849 Orlando, FL - Tatara Systems and picoChip today announced a partnership to collaborate on and jointly market all-IP solutions for the femtocell market. The deal adds momentum to a growing femtocell market that could seriously impact cellular-handset-based voice over Wi-Fi as well as future cellular basestation deployment and revenue models. The partnership announced by Tatara and picoChip will focus on developing a SIP/IMS-enabled femtocell reference design to ease the integration of femtocells into a mobile operator's network, thus enabling the significant advantages of an all-IP approach. The collaboration will include picoChip's portfolio of products, including the PC8208 HSDPA Femtocell modem reference design, and the Tatara Mobile Services Convergence Portfolioof products, addressing the critical areas of voice and messaging convergence, security, and enhanced services. A femtocell, also known as a 3G access point, is a low-cost, low-power cellular base station that provides improved indoor coverage while backhauling the cellular traffic over a broadband connection. Recent advances in low cost silicon technology make femtocells the most viable solution for convergence in service provider networks. Femtocells are designed to work with existing mobile handsets and can support multiple users in a home environment. According to ABI Research, there will be 102 million users of femtocell products on 32 million access points worldwide by 2011. The majority of these deployments will be based on the all-IP architecture. The implications of femtocells are manifold, according to Rupert Baines, vice president of marketing at picoChip Designs Ltd. (Bath, U.K.). For example, they could obviate the need for voice over Wi-Fi (VoWi-Fi), where cellular calls are handed off to a Wi-Fi network in the home or office and then carried back to the mobile network over a broadband connection, whether DSL or cable. The problem with VoWi-Fi, according to Baines, is that performance has proven disappointing, the handsets are expensive and need to be subsidized by the carrier and it's not ubiquitous. Shadowing these technical challenges is the fact that carriers lose out on revenue when calls are handed off from the cellular network. Femtocells give operators a chance to maintain that revenue with high-quality connections over licensed spectrum, versus noise- and latency-prone unlicensed Wi-Fi connections. From another perspective, Baines added that the ability of femtocells to both improve network capacity and coverage can affect basestation deployment models and the revenue that companies such as Ericsson, Alcatel-Lucent and Nokia-Siemens can expect to achieve. Greater coverage via femtocells means fewer basestations are required. In addition, he said, many companies can start developing femtocells, with companies such as 2Wire, a DSL gateway provider, already developing femtocells. Other companies in the femtocell mix include RadioFrame, Ubiquisys, ipAccess and Dekolink. Kineto Wireless, a Unlicensed Mobile Access (UMA) advocate, has partnered with NEC on femtocells, as has Tatara. UMA, a 3GPP standard, promotes Wi-Fi/cellular convergence, though Kineto's gateway solution is amenable to both UMA and the femtocell model using SIP. All material on this site Copyright 2007 CMP Media LLC. All rights reserved. ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.