| 摘要 |
<p>Device at a telecommunications system including a communications system which includes two modes, one of which is specified, at which the specified mode (mode 1) is intended for asynchronous communication and big packets, and the other mode (mode 2) is adapted to synchronous communication such as speech, video and short regularly recurrent packets at which the system spectrum can efficiently carry ATM-packets of service class type A and B, owing to that the nodes of the second mode (mode 2) are regularly the only nodes which are allowed to use the highest priority; reserves bandwidth for such packets that shall be transmitted with regularly recurrent intervals. This in order to be guaranteed necessary transmission capacity; shall reserve bandwidth by transmitting information in a time slot, BRP (Bandwidth Reservation Phase), according to Figure 2 about how much bandwidth it reserves after the node has got access to the medium, at which the BRP time slot shall be transmitted immediately after the node has got permission to use the medium. I.e. in HIPERLAN BRP shall be transmitted after PAP and CP.</p> |
