Renesas trials high-capacity GSM network in China
Renesas Mobile says it has started a pre-commercial trial in China of the latest version of the GSM upgrade technology known as Voice Services over Adaptive Multi-user Orthogonal Sub-channel (VAMOS).
Held on a test network in Beijing, and using ZTE infrastructure equipment, the trial involved a complete implementation of VAMOS II on Renesas Mobile’s smartphone reference platform RRP11B.
“The results showed a two-fold increase in available network capacity,” said the company.
VAMOS improves network capacity by carrying up to four speech users on a single GSM channel.
VAMOS II maximises the number of users on each channel as it permits various VAMOS-compatible handset types to be used simultaneously.
“VAMOS II delivers tangible benefits to operators and end users,” said Heikki Tenhunen, senior vice president at Renesas Mobile.
“As the penetration of VAMOS II capable handsets increases, the capacity benefits continue to grow,” said Tenhunen.
Pu Yingchun, ZTE vice president said: “We already have VAMOS-capable devices in the market and now we have successfully demonstrated VAMOS II. This will increase network capacity further and allow operators to use available spectrum much more effectively, which will give them great flexibility for future network evolution.”