| 摘要 |
<p>Apparatus and method for paging a user terminal (UT) using a satellite communications system having a gateway and one or more satellites, wherein each satellite produces a plurality (n) of beams and each beam includes a plurality of channels. The method of the present invention includes the step of recalling a first location of the UT, wherein the first location corresponds to a location of the UT at a first time t1. In one embodiment, this is accomplished by performing a lookup in a table or database that includes location information for user terminals at different points in time. The method also includes the step of determining a first group (g1) of beams which covers the first location of the UT at a second time t2, where g1 < n and time t2 is later in time than time t1. A page is then sent from the gateway to the UT on a channel, such as a paging channel, of at least one beam of the first group of beams. In one embodiment, the page is sent on the paging channel of each of the first group of beams.</p> |
