Fixed Radio Links

Introduction

Fixed radio links are frequently used for various purposes within telecommunications and broadcast networks, on either a permanent or temporary basis. Usually the justification for using a radio link instead of a wired or optical fibre link relates to geography or economics.  They can often be used to provide fixed communication links between stations in a network supporting a different service (such as mobile communications): an application known as 'infrastructure' or 'backhaul'.

Types of fixed radio links

Point-to-point (PP) links are typically used within telecommunications core networks and as broadcast contribution and distribution links. They may also be used as Small Cell Backhauling within local access networks to connect access points such as Radio LAN hotspots and femto cells to the core network.

Point-to-multipoint (PMP) links are normally used within access networks, enabling network operators to provide services without the need to install conventional cables. A point to multipoint network topology provides a communication route (on a single radio channel for each sector) from one central point to a number of terminals where users are located. Each user location may be served directly from the central location or via one or more radio repeaters.

Multipoint to multipoint (MPMP) links, sometimes called mesh networks, provide communication pathways between various system nodes where each node has a communication pathway with a few of its near neighbours. These pathways share a limited number of radio channels. Most of the nodes will be at user terminal locations, whilst one or several of the nodes might be associated with a core network interface.

The above fixed radio links applications are also frequently referred to as Fixed Wireless Access (FWA) or as Fixed Wireless Systems (FWS), a term adopted by ITU-R SG 9.

Our Role & Activities

Fixed radio links have been deployed for decades across the world, in many cases without harmonized standardization. Since legislation and the needs of operators change with time it can be a challenge to take into account all of these historic applications, while working on standardization. Since many years manufacturers and operators aim at developing and deploying Fixed radio links equipment which is standardized to allow for interoperability and for setting up radio links rather quickly. The standardization of Fixed radio links has continuously been part of our standardization activities since the creation of ETSI.

Due to the steadily increasing demand for bandwidth new frequency bands are still being designated for the use of Fixed radio links. This ensures that radio networks will provide the necessary throughput in the backhauling part of the network. To address these market needs, the Working Group TM 4 of ETSI technical committee Access, Terminals, Transmission and Multiplexing (ATTM) is responsible for working on specifications for point-to-point and multipoint radio systems. This work includes not only Harmonised Standards but also Technical Reports and Technical Specifications.  Furthermore, TM 4 are in close liaison with the CEPT/ECC, ITU and European Commission in order to synchronize the activities.

Standards

The following is a list of the 20 latest published ETSI standards on fixed radio links.

A full list of related standards in the public domain is accessible via the ETSI standards search. Via this interface you can also subscribe for alerts on updates of ETSI standards.

For work in progress see the ETSI Work Programme on the Portal.

Standard No. Standard title.
EN 302 217-2 Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas; Part 2: Digital systems operating in frequency bands from 1 GHz to 86 GHz; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU
EN 302 217-1 Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas; Part 1: Overview, common characteristics and system-independent requirements
EN 302 217-4 Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas; Part 4: Antennas
EN 302 326-2 Fixed Radio Systems; Multipoint Equipment and Antennas; Part 2: Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive for Digital Multipoint Radio Equipment
EN 302 217-2-2 Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas; Part 2-2: Digital systems operating in frequency bands where frequency co-ordination is applied; Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
TR 101 506 Fixed Radio Systems; Generic definitions, terminology and applicability of essential requirements covering article 3.2 of Directive 2014/53/EU to Fixed Radio Systems
TR 103 820 Fixed Radio Systems; Energy efficiency metrics and test procedures for Point-to-point fixed radio systems
TR 102 311 Fixed Radio Systems; Point-to-point equipment; Specific aspects of the spatial frequency reuse method
EN 302 217-2-1 Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas; Part 2-1: System-dependent requirements for digital systems operating in frequency bands where frequency co-ordination is applied
TR 103 053 Fixed Radio Systems; Parameters affecting the Signal-to-Noise Ratio (SNR) and the Receiver Signal Level (RSL) threshold in point-to-point receivers; Theory and practice
EN 301 390 Fixed Radio Systems; Point-to-point and Multipoint Systems; Unwanted emissions in the spurious domain and receiver immunity limits at equipment/antenna port of Digital Fixed Radio Systems
TR 102 243-1 Fixed Radio Systems; Representative values for transmitter power and antenna gain to support inter- and intra-compatibility and sharing analysis; Part 1: Digital point-to-point systems
EN 302 217-1 Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas; Part 1: Overview and system-independent common characteristics
TR 103 103 Fixed Radio Systems; Point-to-point systems; ATPC, RTPC, Adaptive Modulation (mixed-mode) and Bandwidth Adaptive functionalities; Technical background and impact on deployment, link design and coordination
TR 101 506 Fixed Radio Systems; Generic definitions, terminology and applicability of essential requirements under the article 3.2 of 1999/05/EC Directive to Fixed Radio Systems
EN 302 217-1 Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas; Part 1: Overview and system-independent common characteristics
EN 302 217-2-1 Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas; Part 2-1: System-dependent requirements for digital systems operating in frequency bands where frequency co-ordination is applied
EN 302 217-4-1 Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas; Part 4-1: System-dependent requirements for antennas
EN 302 217-4-1 Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas; Part 4-1: System-dependent requirements for antennas
TR 101 506 Fixed Radio Systems; Generic definitions, terminology and applicability of essential requirements under the article 3.2 of 1999/05/EC Directive to Fixed Radio Systems