At the World Radiocommunication Conference 2007 (WRC-07) a task force, called Joint Task group 5/6, was created to study the sharing of radio-spectrum with mobile services. The EBU has been a very active participant in this work. It submitted 30 technical contributions, raising various issues and suggesting solutions. The task force, which met 5 times with more than 100 participants at each meeting, finished its work this month. It delivered a report which will be considered at the next WRC, in January 2012.
Cumulative interference of base stations on broadcasting
The most important issue for broadcasters is the cumulative interference on broadcasting caused by large number of telecom base stations. A majority of country administrations were opposed to considering this as a problem for political reasons, because they did not want to impose any additional constraints on the coordination of their mobile service networks. But thanks to the technical studies made by EBU TECHNICAL and after arduous discussions in the different meetings, the issue was explicitly mentioned in the output report. The EBU has also proposed solutions to solve the issue on the regulatory side. The choice and adoption of these solutions is a matter that will ultimately be decided by the administrations at the WRC12.
Protecting the mobile service
The group has also considered the protection of the mobile service from broadcasting between neighbouring countries. For this, optional measures were proposed in addition to the existing provisions of the GE06 Agreement, which continue to apply.
Guidance to the national Administrations
Adjacent band/adjacent channel operation was considered to be a national issue and was therefore not dealt with by the task force. However, ITU study groups will produce guidance to the administrations on how to improve the compatibility between mobile and broadcasting networks implemented in the same area. EBU TECHNICAL will continue to contribute to this work.
For more information: www.itu.int , for questions: [email protected]