China Mobile Hong Kong (CMHK) today (19 December 2012) launched the world’s first converged LTE FDD/TDD network, powered by Ericsson technology. Ericsson announced it was building the converged network in July this year.
For the first time ever Ericsson says it demonstrated live seamless bi-directional LTE FDD/TDD interworking, via China Mobile Hong Kong’s new converged network. Interworking between the LTE-FDD and LTE-TDD (also referred to as FD-LTE/TD-LTE) networks is becoming increasingly important for operators that have spectrum in both LTE modes.
Converged networks will allow operators, such as CMHK, to seamlessly offer mobile broadband services on FDD (frequency division duplex, which transmits using paired spectrum) and TDD (time division duplex, which transmits using unpaired spectrum) spectrums, thereby increasing capacity and improving consumer experience.
Ericsson said that with the advent of Hong Kong’s first Converged LTE FDD/TDD Network, CMHK’s subscribers will experience improved service quality as well as unparalleled availability in the city. This service will be further enhanced by the arrival of mobile devices that support roaming between the two networks in LTE-FDD or LTE-TDD modes. This will create a seamless service, regardless of the kind of network subscribers are using.
The operator will, in turn, profit from having increased network capacity and greater efficiency, allowing it to better serve not only its current subscribers but also future subscribers. This, combined with the enhanced roaming capabilities, will allow China Mobile Hong Kong to differentiate itself from its competition, making it the most advanced operator in Hong Kong’s highly competitive mobile market.
The converged network also benefits the industry, according to Ericsson, as the LTE ecosystem will gain from greater economies of scale as the market adopts both FDD and TDD technologies.
Ericsson delivered the LTE-TDD radio access network and network management using Ericsson OSS-RC (Operation Support System for Radio and Core), Evolved Packet Core network expansion and upgrade. It also provided consulting and systems integration services as well as related design, training and support services.
China Mobile and Ericsson demonstrate LTE-TDD roaming services
As part of the launch of its LTE-TDD commercial networks in Hong Kong, China Mobile and Ericsson showcased a series of applications based on LTE-TDD data roaming between Hong Kong and Shenzhen, a city in China’s Guangdong Province.
The demonstration was supported by the LTE FDD/TDD converged commercial networks deployed by Ericsson in Hong Kong, as well as the TD-LTE Evolved Packet Core (EPC), In-Building Solution (IBS) site and universal SIM (USIM) deployed by Ericsson in Shenzhen. The demonstration showcased real-time high-definition video interaction between the two cities on LTE-TDD networks for the first time.
The demonstration involved the LTE FDD/TDD dual-mode terminal in Hong Kong providing roaming to Shenzhen, and the LTE-TDD terminal in Shenzhen providing roaming to Hong Kong. Thanks to the LTE RAN in both Hong Kong and Shenzhen and the international transmission network, the live video interaction was of high quality in terms of both voice and images, and was characterized by very limited latency, according to Ericsson.
This high-speed, seamless, user experience was enabled by the LTE-TDD and LTE FDD/TDD converged networks provided by Ericsson, which consist of cutting-edge LTE-TDD products from its portfolio, including the RBS 6000 multi-standard radio base station, Evolved Packet Core and eNodeB IBS.
By using LTE-TDD technology, consumers can build a ‘temporary dedicated channel’ with bandwidth, latency and service quality assurance through a wireless dongle to realize high-end commercial applications, such as camera-over-LTE and video conferencing, anytime and anywhere. This also brings telecom operators a host of brand-new business opportunities.
See also: Ericsson to build TD-LTE network for China Mobile Hong Kong