favor of longer battery life whereas others want data updated rapidly without regard for battery life therefore in this embodiment data is transmitted even where there is no data change at a rate that is consistent with a user 39 s preference for the frequency of updates versus battery life by transmitting data at a rapid by synchronized pace i e the highest available rate desired by a user and repeating the transmissions even when there is no data change individual receiving wtrus can wake up and search for data at different time intervals according to user preference this satisfies the needs of both groups of users as well as those in between by providing an adjustable degree of settings since the amount of delay that is acceptable varies according to the particular user application it is likely that any tradeoff between delay and power consumption would have different optimums for different users therefore latency i e delay time may be optimized based on usage as low latency conflicts with low power consumption this becomes particularly significant during times when the wtru is not in active use to implement this embodiment in 3 rd generation cellular networks once a receiving wtru is aware of scheduled broadcast or multicast transmissions the receiving wtru can then acquire the service i e the scheduled broadcast or multicast transmissions transmitted on either the forward access channel fach or the downlink shared channel dsch on an as needed basis the network will transmit the broadcast or multicast data in either radio link control transparent or unacknowledged mode which allows the receiving wtru to determine if reception is.