Mobility Development Group NewsletterJanuary 2015
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The Mobility Development Group is your forum to collaboratively address the competitive challenges and business opportunities that exist in the ever-changing wireless industry. From the new and improved air interface technologies to novel OTT applications and services, we are here to help you create a connected world.
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- A forum that embraces all air interface technologies
- An affordable international platform to discuss operations and share best practices
- A forum to address common challenges and opportunities
Our membership consists of more than 50 of the industry’s leading companies. Visit the membership section of our website for more information on how you can join today and help shape the future of the wireless industry!
Technology Road Map: Defining a Multi-Technology Focus for Seamless Technology Migration and Interoperability
By Brahm Parasher, Alcatel-Lucent
Leading the invigorated focus of Mobility Development Group (MDG) as a platform for the mobility ecosystem embracing all air interface technologies, the Global Strategy Team (GST) continues to act as strategic think-tank arm of MDG with mission to provide strategic direction for the network/technology roadmap based on evolving market dynamics and to lead advocacy efforts for the CDMA industry. Global Strategy Team comprised of representatives from leading infrastructure providers (Alcatel-Lucent, Ericsson, Nokia, Qualcomm, ZTE) evaluate trends and opportunities by interfacing with various industry and standards bodies to better understand market, customer, product and technology drivers and how they impact the wireless operators in general and 3GPP2 operators migrating from CDMA to LTE in particular.
Since wireless network operators and vendors will continue to profit from their 3G CDMA investments for many years while migrating to 4G and implementing complementary technologies, GST helps identify the focus areas and communicate a roadmap for seamless technology migration that improves interoperability and maximizes infrastructure investments. As shown in Figure 1, there are primarily four 3G/4G inter-operability focus areas as 3GPP2 operators migrate from 3G to 4G and embrace various air interfaces and topologies to augment their capacity and coverage.
We expect an extended period where 3G will co-exist with 4G. Since LTE was launched as an IP data network, all 3GPP2 operators launching LTE use CDMA as their data fallback (EV-DO) and voice solution (1X) in LTE handsets. From the infrastructure, network performance and customer experience perspective, vendors and operators continue to work together to ensure seamless CDMA/LTE interworking by offering:
3G/4G Data Mobility:
- Evolved HRPD (eHRPD) – Provide seamless data mobility to CDMA while allowing access to new LTE services over the existing EV-DO network
Voice/SMS Circuit Switch Service Continuity [3G/4G Voice Mobility]: With VoLTE as an end goal, operators are deploying various voice migration strategies as shown in Figure 2.0 below:
- Dual Transceiver based solution for simultaneous Voice and LTE (SVLTE) where UE maintains simultaneous registration on LTE network for data and legacy network for voice and SMS
- Single Radio based solution using Circuit Switch Fallback (CSFB/eCSFB) to provide circuit services over 1X while allowing access to LTE without the need for complex dual transceiver devices.
- Once operators start rolling out VoTE, Single Radio Voice Call Continuity (SRVCC) service will facilitate seamless user experience by allowing mobility from LTE to 1X in mid-call.
WiFi Mobility: As WiFi becomes more main stream, operators are implementing carrier grade WiFi, leveraging HotSpot 2.0 enhancements from IEEE & ANDSF proposal from 3GPP, thereby bringing user experience under their control to augment their 3G/4G/WiFi capacity and coverage while also using it as a strategic tool for loyalty, retention and churn reduction.
Managing & Optimizing HetNet: The increasingly complex and macro-metro networks (HetNets) will help deliver the consistent quality of experience that end users demand while meeting explosive growth of wireless data traffic.
- By default, the future networks are bound to be heterogeneous leveraging various air interfaces (2G/3G/4G/WiFi) topologies (Macro/Metro/Micro/Pico/Femto) encompassing increasingly fragmented frequency bands.
- Leveraging CDMA Inter-RAT Self Optimizing Networks operators will be able to reduce cost in deploying and maintaining interworking with various SON techniques (both distributed & Centralized SON techniques)
The GST welcomes ideas, suggestions and active participation from all interested parties. Join our team and work with us to address the challenges and opportunities that the industry faces and help us define our future.