منابع مشابه
Coded Caching in a Multi-Server System with Random Topology
Cache-aided content delivery is studied in a multi-server system with K users, each equipped with a local cache memory. In the delivery phase, each user connects randomly to any ρ servers out of a total of P servers. Thanks to the availability of multiple servers, which model small base stations with limited storage capacity, user demands can be satisfied with reduced storage capacity at each s...
متن کاملImproved rate for a multi-server coded caching
Multi-server coded caching, which can further reduce the amount of transmission by means of the collaboration among these servers in the wireless network during the peak traffic times, can be seen everywhere in our life. This amount is called rate. The three servers setting (two data servers and one parity check server)is widely used in practice, e.g. redundant array of independent disks-4. Luo...
متن کاملOn Multi-Server Coded Caching in the Low Memory Regime
In this paper we determine the delivery time for a multi-server coded caching problem when the cache size of each user is small.We propose an achievable scheme based on coded cache content placement, and employ zero-forcing techniques at the content delivery phase. Surprisingly, in contrast to previous multi-server results which were proved to be order-optimal within a multiplicative factor of ...
متن کاملMulti-antenna Interference Management for Coded Caching
A single cell downlink scenario is considered where a multiple-antenna base station delivers contents to multiple cache-enabled user terminals. Using the ideas from multi-server coded caching (CC) scheme developed for wired networks, a joint design of CC and general multicast beamforming is proposed to benefit from spatial multiplexing gain, improved interference management and the global CC ga...
متن کاملCoded Caching for Heterogeneous Wireless Networks with Multi-level Access
Content distribution networks, enabled through replicated caching, have enabled broadband content delivery over the wiredInternet. In this paper we propose a wireless content distribution scheme based on a new multi-level storage, access, and distributionarchitecture that is tailored for next generation wireless networks. This scheme significantly outperforms conventional translatio...
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ژورنال
عنوان ژورنال: IEEE Transactions on Information Theory
سال: 2016
ISSN: 0018-9448,1557-9654
DOI: 10.1109/tit.2016.2614722