摘要:
A multiple access control method for guaranteeing a QoS requirement is disclosed. The method includes the steps of a first step in which the random access channel is separated into a plurality of sub-slots, and one of the thusly separated sub-channels is designated as a forced collision sub-slot and is shared for a mobile station which is sensitive to a reservation delay time, and a second step in which capacity-back (CB) sub-slots are designated one-by-one with respect to the mobile station, which is sensitive to the reservation delay time in the next slot when a collision occurs in the designated forced sub-slot and a reservation request is performed without a predetermined competition.
摘要:
An asynchronous transfer mode LAN switching hub device using IEEE P1355 system and its control method. The invention comprises: a central processing unit module for controlling and generalizing the switching hub entire system; a switching matrix module for executing a high speed switching function of IEEE P1355 packet a; ATM-to-P1355 converting module for converting ATM cells received from ATM communication network or ATM terminal and transmitting to said switching matrix module; an MA-to-P1355 converting module for converting ethernet, token ring, FDDI packet to IEEE P1355 packet and transmitting to said switching matrix module; a communication managing module for managing the communication network; MPEG-to-P1355 converting module for transmitting MPEG video; ISDN-to-P1355 converting module for associating with narrow band width ISDN; additional application interface module; and DS (Data/Strobe) link being a high speed serial link interconnecting each module, and there is effect having an adaptability and expandability that a high speed data transmitting and receiving among the modules is possible by low cost, and even when equipping a necessary application module in future, an interconnection with existing modules is easy by merely utilizing DS link.
摘要:
A medium access control protocol for wireless ATM network in communication protocol for controlling an access between a plurality of mobile terminals and an access control station in the wireless ATM system is provided, including: an up-stream frame for controlling a medium access by enabling the plurality of mobile terminals to transmit connection control data and status data of the terminal; and a down-stream frame for controlling the medium access by enabling the access control station receiving the up-stream frame to transmit the slot allocation data and the connection control data to the mobile terminals.