Yoshihiro Takiyasu

High-speed multimedia backbone LAN architecture based on ATM technology

A new high-speed multimedia backbone LAN (MBLAN) architecture that efficiently accommodates existing terminals and offers connectivity with public networks in the introduction stage of broadband ISDN (B-ISDN) is presented. A logical 156-Mb/s ring with the standard synchronous optical network (SONET) format is a basic element to realize the proposed high-speed backbone LAN. Several rings are multiplexed into a 622-Mb/s or 2.4-Gb/s physical transmission line. The slotted ring access method is utilized for each logical ring in order to provide a multimedia communication facility. The slot size and format are based on the asynchronous transfer mode standard and offer easy connectivity with B-ISDN. Independent clocking using the SONET stuffing mechanism is also introduced to solve the jitter accumulation problem.<<ETX>>

Consideration of a slot access method for backbone local area networks

Abstract The standardization of LANs has been fundamentally completed by IEEE, and recently, high-speed backbone local area networks (BLANs) for integrated services (voice, video and data) are actively studied. This paper proposes a new slot access method for BLANs. The proposed method improves ring topology efficiency and increases throughput using slot concatenation and multi-slot access. System applications and the performance are also discussed.

A consideration on ATM technology in private networks

A development scenario for ATM (asynchronous transfer mode) private networks and possible architectures for inter- and intra-premises private networks are discussed. It is pointed out that ATM is a promising technology for advanced private networks aiming at wideband and multimedia communication. It is suggested that ATM technology will be introduced first into private networks to support advanced and sophisticated applications in business communication environments. It is shown that MBLAN (multimedia backbone local area network) and SPN (super packet node) are possible architectures employing ATM technology.<<ETX>>