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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Erlichman, T. Lambadaris, I. Larijani, P. |
| Copyright Year | 2007 |
| Description | Author affiliation: Carleton Univ., Ottawa (Erlichman, T.; Lambadaris, I.; Larijani, P.) |
| Abstract | A common 'finite-burst' mode of wireless links scheduling in CDMA2000 has been shown to cause occupancy oscillations at the bottleneck shared-queue resulting with large overflow-based closely clustered bursts of data-packets drops. The CDMA2000 gateway (PDSN) node is constructed with superior service-rate compared to its downstream core node (PCF). The rate mismatch further allows for traffic load variations and subsequent congestion at the core node. The use of a Xoff/Xon feedback flow control in CDMA2000 was proposed at the 3GPP2. We evaluate the 3GPP2 backpressure proposal for protecting the bottleneck queue during heavy congestion conditions. We devise an adaptive-Xoff/Xon for tandem queues, which extends the traditional Xoff/Xon to provide threshold adaptation according to overflow prediction. The adaptive-Xoff/Xon complements the RED AQM at the bottleneck node, creating a hybrid flow-control model for tandem nodes. Experimental results show that the hybrid flow-control model eliminates packet discards due to overflow at the bottleneck queue, improves throughput, and lowers the overall data packets drop volume. Packets show to not experience backpressure-based delay variation while traversing the tandem queues. An associated cost is low volume of feedback control packets. Larger tandem-queues' average-delays are observed, which result with lower power-function. Hence, degraded combined performances are delivered by the 3GPP2 proposal for backpressure. |
| Starting Page | 4249 |
| Ending Page | 4256 |
| File Size | 603171 |
| Page Count | 8 |
| File Format | |
| ISBN | 1424403537 |
| DOI | 10.1109/ICC.2007.701 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-06-24 |
| Publisher Place | UK |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Peer to peer computing Feedback Proposals Protection Degradation Communication system traffic control Traffic control Performance evaluation Communications Society Broadband communication |
| Content Type | Text |
| Resource Type | Article |
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