Wi-Fi supplier Ruckus Wireless has added a number of software enhancements to its Smart Wi-Fi product portfolio to give users the ability to make higher quality IP voice calls over a wireless connection, also known as voice over WLAN (VoWLAN).
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The features, which will be available as standard, will ensure crystal clear, carrier-grade Wi-Fi call quality in challenging environments, claimed Ruckus.
It has already tested the software with a number of US providers, including Republic Wireless, which found it was having performance issues on its corporate Wi-Fi network which affected its testing environments.
Republic co-founder and CEO David Morken said that to provide voice over Wi-Fi smartphone services he needed his network to perform at the highest level all the time.
“We’ve now got the Wi-Fi environment our engineers require in order to continue delivering new services and features for our customers,” he said.
Ruckus has implemented a number of new advances to optimise roaming and quality of service (QoS) for delay-sensitive voice traffic.
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These include automatic QoS heuristics that prioritise Wi-Fi voice traffic by looking at the type of service bits set by the smartphone in the IP header, as well as capacity-based client access control, which can decline connection requests from new clients to ensure quality is maintained during heavy load periods.
The advances also include directed roaming using the 802.11v standard, which directs clients towards the best available access point is a signal falls below user-defined or certain throughput thresholds, as well as Wi-Fi multi-media admission control, which requires clients to request a specific amount of bandwidth before allowing them to connect, preventing oversubscription and improving performance.
Ruckus claimed that when combined with its BeamFlex technology it could reduce contention on radio frequency channels, the likelihood of collisions, frame loss and packet retransmissions by adjusting antenna patterns for each packet transmitted over the Wi-Fi network.
“The innovations we’ve made will improve the reliability and quality of Wi-Fi calling applications, which enables both service providers and enterprises to extract greater value from their Wi-Fi infrastructure,” said Ruckus Wireless COO Dan Rabinovitsj.
“Voice over Wi-Fi isn’t new but the ability to deliver a carrier-class voice service over Wi-Fi is something that no one has mastered, until now.”