Radio relay communication (RRL) is a type of radio communication formed as a result of the operation of a chain of receiving and transmitting radio stations. Terrestrial radio relay communication operates on millimeter, centimeter, and decimeter waves. RRL networks play an important role in cellular communications, as they allow you to transfer very large volumes of traffic at a minimal cost.
In the future, this technology will be able to cover the bandwidth needs of cellular operators by 100%, which means that it will ensure high-quality operation of many different services and applications, the Internet connection of devices and things. Sometimes, Radio comunicacion or radio communication methods are the best solution for communicating securely and intelligently.
Radio Relay Communication capabilities
The main advantage of RRL is associated with the ability to increase the bandwidth of both backhaul and fronthaul networks. RRL allows you to use several frequency bands at once and thus increase the capacity of the network at minimum costs. For example, using frequencies in the E-band (70/80 GHz), it is possible to increase the throughput sevenfold and at the same time offload the traditional cellular frequencies. This is significant in light of the planned commercial launch of fifth-generation (5G) networks in 2020.
The 5G deployment will use a combination of microwave and fiber-optic technologies to upgrade existing networks. Choosing between RRL and optical fiber as a technology for the development of a transport network, operators make a decision based on the availability of fiber in a particular area and the cost of network ownership (TCO indicator). “In Russia, it is not always possible and advisable to lay FOCLs, so we do not plan to abandon the use of radio relay links.
In each specific case, we study all possible ways of building and modernizing the network and choose the one that is optimal, ”explains Yulia Dorokhina, a representative of MegaFon. Tele2 adheres to a similar strategy. “We use radio relay equipment where it is economically feasible,” says Konstantin Prokshin, a spokesman for Tele2.
Due to the reliability of the provided connections, fiber is increasingly used for public services and fixed communications, for example, when deploying FTTH solutions in the access domain. RRL, in turn, is the main technology for connecting base stations, its advantages are speed, low cost of deployment, and a significant increase in throughput.
“Radio relay communication is the main way to connect base stations on our network along with fiber-optic communication lines. We are using this connection method now and plan to use it in the future. At the same time, we build fiber-optic communication lines to positions in cities and at nodal positions, which provides an effective target architecture of the transport network “, –
Frequency bands used
Currently, a bandwidth of about 40 GHz is used for radio relay communications, but it is not available in its entirety in all countries of the world. In Radio Relay Communication, 5 ranges are allocated, each of which has its own characteristics:
6-13 GHz These are low-frequency bands, they are less sensitive to rain, and for this reason, are used in rainy regions with long hotspots.