Broadband ISP and mobile operator Vodafone UK has announced the results of two recent 5G trials using a large chunk of millimetre wave (mmWave) radio spectrum, which managed to deliver home broadband (FWA) connectivity peak speeds of up to 4Gbps (dropping to 2.8Gbps in a more traditional mobile environment).
The challenge with using mmWave (mmW) bands for low power wireless communications stems from the fact that such signals are extremely weak and don’t tend to travel very far. As a result, constructing a mobile network that can harness them tends to be very expensive (dense and complex), which limits the viability of such bands to busy areas (e.g. shopping malls, events etc.) or for fixed wireless access (FWA) style links to homes and businesses.
At present, UK mobile operators aren’t able to harness much mmW spectrum because Ofcom has yet to conduct their auction of the related 26GHz and 40GHz bands (here), which is itself awaiting the outcome of the proposed merger between Vodafone and Three UK. But the regulator does allow mobile operators to trial such spectrum, which is something we’ve already seen EE doing and now Vodafone has done something similar.
The operator – supported by partners at Qualcomm Technologies Inc. and Ericsson – recently conducted two successful trials that demonstrated the potential performance benefits of mmW (i.e. faster data speeds, increased capacity, reduced latency, and enhanced network performance). Both trials made use of Ericsson’s AIR 5322 (antenna-integrated radio) and Baseband 6651 technology, as well as various devices powered by the Snapdragon® X65 5G Modem-RF System from Qualcomm.
The first trial focused on how the higher download and upload speeds of mmWave spectrum can help deliver “fibre-like speeds and home broadband services” over the airwaves without the need for extensive underground infrastructure deployment. Below are some key findings from the Newbury location using full spectrum bandwidth (800MHz of mmWave spectrum). But they haven’t told us which specific bands this involved.
Within 100 metres of the mast, the devices (from Askey and ZTE as well as a MiFi from Netgear, powered by the Snapdragon X65 5G Modem-RF System) were able to achieve peak download speeds up to 4Gbps and 500Mbps for uploads. At a range of 400 metres, the peak download speeds were 2.3Gbps and 200Mbps for uploads. At the edge of the coverage zone (up to 700 metres), the peak download speed was 500Mbps. Latency was also found to be 4-5 times lower than existing 5G capabilities, but they didn’t include any specific millisecond figures for this.
The trial also demonstrated a higher level of data upload to the network. In addition to the home broadband use case, the higher upload speeds could be used to wirelessly connect cameras and broadcasting equipment to provide a more cost-effective and flexible solution for media companies to cover events.