Cooperative Tx/Rx Caching in Interference Channels: A Storage-Latency Tradeoff Study
arXiv:1605.07729 · doi:10.1109/ISIT.2016.7541656
Abstract
This paper studies the storage-latency tradeoff in the wireless interference network with caches equipped at all transmitters and receivers. The tradeoff is characterized by the so-called fractional delivery time (FDT) at given normalized transmitter and receiver cache sizes. We first propose a generic cooperative transmitter/receiver caching strategy with adjustable file splitting ratios. Based on this caching strategy, we then design the delivery phase carefully to turn the considered interference channel opportunistically into broadcast channel, multicast channel, X channel, or a hybrid form of these channels. After that, we obtain an achievable upper bound of the minimum FDT by solving a linear programming problem of the file splitting ratios. The achievable FDT is a convex and piece-wise linear decreasing function of the cache sizes. Receiver local caching gain, coded multicasting gain, and transmitter cooperation gain (interference alignment and interference neutralization) are leveraged in different cache size regions.
To appear in IEEE ISIT 2016
References in corpus (1)
Cited by in corpus (9)
- Fundamental Tradeoff between Storage and Latency in Cache-Aided Wireless Interference Networks
- Gibbsian On-Line Distributed Content Caching Strategy for Cellular Networks
- Online Edge Caching in Fog-Aided Wireless Network
- Fundamental Storage-Latency Tradeoff in Cache-Aided MIMO Interference Networks
- Treating Content Delivery in Multi-Antenna Coded Caching as General Message Sets Transmission: A DoF Region Perspective
- Bandwidth Gain from Mobile Edge Computing and Caching in Wireless Multicast Systems
- Content Caching and Delivery in Wireless Radio Access Networks
- Exploiting Tradeoff Between Transmission Diversity and Content Diversity in Multi-Cell Edge Caching
- ADMM-based Fast Algorithm for Multi-group Multicast Beamforming in Large-Scale Wireless Systems