Zero fallback refers to expansion of the fundamental LTE network coverage so that it is the same as that of 2G and 3G networks. With expanded coverage, LTE data, VoLTE, and IoT services will always be provided by the LTE network. Users will no longer fall back to 2G or 3G networks. The enhanced coverage also lays a foundation for 2G and 3G users to be migrated to LTE networks. LTE will be a fundamental network in the 5G era, LTE integrates voice, data, and IoT services. Such a network requires ubiquitous LTE coverage.
Currently, LTE coverage is not as good as that of 2G networks. Insufficient coverage causes LTE users to fall back to the 2G or 3G networks, resulting in significant user experience changes. It also leads to congestion on the 2G and 3G networks and makes it difficult to release spectrum used by 2G and 3G. To achieve zero fallback, operators can refarm low frequency bands, fill coverage holes, and take other measures to ensure wider coverage in rural areas and deeper coverage in urban areas. In this way, the 2G and 3G spectrum resources can be released for constructing a simplified target network, an LTE + NR network.
The ZeroFallback solution consists of four innovative sub-solutions, LTE integrates voice, data, and IoT services. Such a network requires ubiquitous LTE coverage.so Huawei Launches the ZeroFallback Solution to build ubiquitous LTE coverage.
RuralLTE combines hardware with software features, providing about 10 dB coverage gains in both the uplink and the downlink. With this solution, the coverage on 1800 MHz in rural areas is the same as that provided on GSM900 MHz. RuralLTE can be widely used in suburban and rural areas with large inter-site distances and low interference
The EasyMacro site is small, light, and environmental friendly, fast site acquisition. It is suitable for quick site deployment in coverage holes and hotspots area the fourth is BookRRU: The BookRRU has an ultra-small volume that making it almost invisible ,it is suitable for quick site deployment in coverage holes.such as resident
Currently, deep coverage and poor outdoor coverage problems will still be prominent. The BookRRU has an ultra-small volume of 6 L and an ultra-light weight of 5 Kg, making it almost invisible as an outdoor site. It supports RRU cascading and macro-micro coordination. The BookRRU is suitable for quick site deployment in coverage holes
VoLTE-enabled networks are fundamental voice networks in the 5G era. 5G voice cannot fallback directly to 2G or 3G. Fallbacks from 5G to 4G and then to 2G or 3G will lead to a delay of more than 5s. Huawei‘s unique VoLTE Plus solution can improve VoLTE coverage by 5–7 dB in interference scenario
