| Summary: | This thesis focuses on a proposed IEEE 802.6 Metropolitan Area Network (MAN) based
distributed communication architecture for supporting the Personal Communication Services
(PCS). Future-generation telecommunications systems are intended to combine all kinds of
networks (wireline or wireless) and services (data, voice, video, graphics, etc.) into one single
universal personal communications system.
An IEEE 802.6 MAN-based distributed Personal Communication Network (PCN) architecture
is introduced in this thesis, and network performance analysis based on this architecture is
presented. Isochronous (voice) traffic will be transported by high priority queue-arbitrate (QA)
slots instead of by using the more conventional pre-arbitrated (PA) slots. Consequently, the
highest priority QA slots will be used to transport signaling traffic while the lowest priority QA
slots will be used to transport data traffic. Since analytical models are not available, simulation
models have been developed to evaluate the transmission delay of voice and data packets for both
inter- and intra-MAN traffic. From these simulation models, nodal transmission delay is found
to be depended on the physical location of the transmitting node and traffic levels within the
network. Inter-MAN traffic nodal transmission delay is additionally dependent on the connection
scheme of homogeneous bridges which interconnect different MANs.
With CCITT Q.931 used as the signaling protocol for call setup, the QA access for
isochronous traffic (QAAIT) call setup and clearing is simpler and faster than the PA access
for isochronous traffic (PAAIT), QA access avoids specific channel allocation and call clearing.
Although QAAIT has its advantages in call setup and clearing, its use under light traffic load only
is advised. Under heavy traffic loads PAAIT is advised, since the later case provides bounded
packet transmission delay at all times by controlling network call access.
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