Weak Interactive Systems Design in Wireless Broadcast Channels

Massive informations transmission in wireless broadcast channels has many well-known problems. This is an asymmetric environment where broadcasting the information is an effective and good way to make the information available simultaneously to a large number of users, however the optimization of the bandwidth allocation implies more attention. Moreover we have to make point of the limited battery capacity of mobile devices. In this paper we will present some solutions making use of weak interactivity, that is useful in case of possible low bandwidth and permits a minimization in communication channel utilization. Informations selections are done on the device itself. In a second phase we will deal with informations and their organization in indexed structures: this is important when using devices with limited memory and a low processing capability.