A control-plane perspective on reducing data access latency in LTE networks

Y Li, Z Yuan, C Peng - Proceedings of the 23rd Annual International …, 2017 - dl.acm.org
Proceedings of the 23rd Annual International Conference on Mobile Computing …, 2017dl.acm.org
Control-plane operations are indispensable to providing data access to mobile devices in
the 4G LTE networks. They provision necessary control states at the device and network
nodes to enable data access. However, the current design may suffer from long data access
latency even under good radio conditions. The fundamental problem is that, data-plane
packet delivery cannot start or resume until all control-plane procedures are completed, and
these control procedures run sequentially by design. We show both are more than …
Control-plane operations are indispensable to providing data access to mobile devices in the 4G LTE networks. They provision necessary control states at the device and network nodes to enable data access. However, the current design may suffer from long data access latency even under good radio conditions. The fundamental problem is that, data-plane packet delivery cannot start or resume until all control-plane procedures are completed, and these control procedures run sequentially by design. We show both are more than necessary under popular use cases. We design DPCM, which reduces data access latency through parallel processing approaches and exploiting device-side state replica. We implement DPCM and validate its effectiveness with extensive evaluations.
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