| 摘要 |
The present invention relates to a device ( 4, 5, 6, 7, 8 ) adapted for transmission and reception via a satellite link ( 2 ) in a satellite communication system ( 3 ). The device ( 4, 5, 6, 7, 8 ) is further a part of a group ( 9, 21 ) of similar devices ( 4, 5, 6, 7, 8 ), where the device ( 4, 5, 6, 7, 8 ) comprises a first address ( 14 ), unique for the device ( 4, 5, 6, 7, 8 ). The device ( 4, 5, 6, 7, 8 ) further comprises at least a second address ( 15, 19 ) that is common for the group ( 9, 21 ), enabling a message ( 22 a , 22 b , 22 c) sent to the group ( 9, 21 ) to be addressed to the group ( 9, 21 ). This means that a single transmission is sufficient to reach all members ( 4, 5, 6, 7, 8 ) in the group ( 9, 21 ). The present invention also relates to a satellite communications system comprising devices according to the above. The present invention also relates to a method for transmission and reception via a satellite link.
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