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Spectrum Engineering

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The SE Working Group has the vital function of ensuring that the usable frequency spectrum can be used with optimum efficiency and effectiveness by the various competing radio services. The major activities of WGSE involve the development of sharing criteria between radiocommunication services, systems or applications using the same frequency bands and the development of compatibility criteria between radiocommunication services using different frequency bands. Many aspects of the work of ETSI are relevant to the efficient use of spectrum and WGSE therefore plays a key role in liaising with the relevant committees in ETSI and reviewing the relevant parameters of radio equipment specifications under development within ETSI.

The Working Group meets three times a year and its specialised work is carried out in a number of Project teams. The current list of Project Teams and the main issues under study are given in the table below.

Information on the UK preparations and briefing for WGSE and its Project Teams can be obtained from Steve Bond (Steve.Bond@ra.gsi.gov.uk)

List of WGSE Project Teams

Current Issues
7 Compatibility problems between certain radiocommunications systems operating in adjacent bands Adjacent band compatibility issues at 915 MHz between TETRA and GSM, the relaxation of adjacent channel limits for TETRA terminals
16 Satellite service issues above 3.4 GHz WRC-03 Agenda items: 1.11; 1.19; 1.24; 1.27; 1.29; 1.301.35; 1.37
19 Fixed service issues WRC-03 Agenda items: 1.11; 1.26; 1.32; sharing GSO FSS with ENG/OB at 22 GHz, coexistence of PMP systems at 3 - 11 GHz, issues in liaison with TM4, calculation method to evaluate maximum FS density, FS spectrum requirements for UMTS infrastructure, harmonised channel plan for the bands 7900 - 8200 MHz and 8200 - 8500 MHz, sharing low power radars with FS in the band 10.5 - 10.6 GHz,
21 Unwanted emissions WRC-03 Agenda items 1.8.1; 1.8.2
24 Short range devices (SRD) Various compatibility issues related to SRDs including: Radio Frequency Identification Devices (RFID); Bluetooth; ultra wide-band technology; SRDs operating at 132 kHz
27 Digital broadcasting terrestrial Compatibility studies relating to Digital TV and other services; ancillary broadcasting sharing; radio microphone sharing
28 MSS technical standards, operational and compatibility issues WRC-03 Agenda items: 1.11; 1.15; various compatibility issues related to the mobile satellite service
31 New technologies for maritime communications WRC-03 Agenda item 1.14
34 Compatibility studies between existing and proposed new radio services in the band 2700 - 3400 MHz Various compatibility studies in the frequency range 2700 - 3400 MHz. This band is used mainly for radar systems.
35 Compatibility between radiocommunication systems and telecommunication systems using cable distribution Protection requirements of radiocommunications from radiation from various cable distribution systems
36 Compatibility and sharing issues in the band 5150 - 5725 MHz WRC03 Agenda items 1.5 and 1.6 and other sharing issues in this frequency range, e.g. Radio Local Area Networks

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