Abstract: This invention relates to a broadcasting system/method where a broadcasting signal is encoded on the basis of one or more region codes. During decoding a decryption key and/or a pay-mode key is used where the keys is dependent on a region code representing a physical location of a receiver. In this way, a simple, reliable and efficient way of enabling region dependent broadcasting is obtained. Further, it is possible to have different pay modes dependent on a physical location or region. Additionally, the pay modes may be changed dynamically since only the associations between the region codes and the pay-modes need to be updated.

Abstract: In self-organizing networks, broadcasts comprising presence information, referred to as beacons, are the default mechanism in finding neighboring information, i.e. information on which devices are present in the network of a given device. Such beacons are transmitted periodically from each device. A device has knowledge of the presence of other devices in the network when it receives beacons from them. The method of the invention suggests that a device could skip its subsequent scheduled beacon if all its neighboring devices have received a previous beacon during the same period.