Mobile and fixed broadband networks are constantly evolving, leading to an exponential increase in the backhaul capacity of base stations. And as 5G fast approaches, microwave is facing growing challenges.
Common-band microwave provides a highly reliable transmission of 100 km, which satises the requirements of macro base stations. But its spectrum resources are insucient and its transmission bandwidth is limited (< 1 Gbit/s), making capacity expansion increasingly dicult.
E-band microwave supports up to 20 Gbit/s with XPIC, which satises requirements for LTE and 5G. But its transmission distance is limited (< 5 km), making it incapable of meeting the medium-distance backhaul requirements of macro base stations.
Figure 1. Common-band and E-band advantage.
Super Dual Band is a cross-band aggregation technology that incorporates physical link aggregation, AM, and QoS technologies. By using both common-band (6–42 GHz) and E-band (71–76/81–86 GHz), it provides reliable, high-bandwidth microwave transmission over long distances.
In the Super Dual Band solution, the common-band and E-band microwave links protect each other. If the E-band links experience degradation or are interrupted, perhaps by bad weather, the common-band links always ensure the transmission of high-priority services.
Figure 2. Microwave AM. Common-band links always ensure the transmission of high-priority services.
You can continue learning about this technology following the links bellow:
https://support.huawei.com/enterprise/es/doc/EDOC1100055967?section=k001
https://support.huawei.com/enterprise/en/doc/EDOC1000106451?section=o002
