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Seventh International Conference on Computer Communications and Networks (ICCCN '98)
Improved VC-Merging for Multiway Communications in ATM Networks
Lafayette, Lousiana
October 12-October 15
ISBN: 0-8186-9014-3
R. Venkateswaran, Lucent Technologies
Xiaoqiang Chen, Lucent Technologies
Shizhao Li, New Jersey Institute of Technology
C.S. Raghavendra, Aerospace Organization
Nirwan Ansari, The Chinese University of Hong Kong
The routing and signaling protocols for supporting multipoint-to-multipoint connections in ATM networks have been presented earlier. VP-Merge and VC-Merge techniques have been proposed as the likely candidates for resolving the sender identification problem associated with these connections. The additional buffer requirements in the VC-Merge mechanism and the excessive use of VPI/VCI space in the VP-Merge mechanism have been the main reasons for concern about their effective utility. In this paper, we propose improvements to the traditional VC-Merge technique to minimize the need for additional buffers at intermediate merge points. Aptly named Dynamic Multiple VC-Merge (DMVC), Fixed Multiple VC-Merge (FMVC) and Selective Multiple VC-Merge (SMVC), these mechanisms define a generic scheme for merging the data from multiple senders onto one or more outgoing links. By appropriately choosing the number of connection identifiers per connection, these schemes lead to a large reduction in the buffer requirements and an effective utilization of the VPI/VCI space. Based on extensive simulations, we show that by using two connection identifiers per connection, there is an 80% reduction in buffer requirements for DMVC and FMVC when compared to the buffer required for traditional VC-Merge.
Index Terms:
multiway communications, VC-merge, VP-merge
R. Venkateswaran, Xiaoqiang Chen, Shizhao Li, C.S. Raghavendra, Nirwan Ansari, "Improved VC-Merging for Multiway Communications in ATM Networks," icccn, pp.4, Seventh International Conference on Computer Communications and Networks (ICCCN '98), 1998
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