English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In this paper, we propose a more refined video segment based Mobile EdgeComputing (MEC) enhanced cache update strategy, which takes into account theclient's playback status and transmission state, MEC cache capacity and thepopularity of each segment, to improve the quality of experience (QoE) ofclients and the use ratio of MEC cache. In each cache update period, thesegments which cannot bring significant QoE improvement will be deleted andmeanwhile more suitable representations of the segments will be cahed instead.First, we divide the MEC cache space into three parts based on segmentpopularity and segment importance level. In addition, the size of differentcache parts can be transformed to each other to further exploit the MEC cachespace. For different parts, the corresponding deleted strategy and cachingstrategy are formulated, where the deleted strategy combines the requestedtimes of segment and transmission capability of clients, and the cachingstrategy utilizes the playback state of clients to calculate the cachingpriority. Furthermore, we formulate the cache update problem to maximize theutility function of clients subject to the constraint of MEC cache size andtransmission capacity. The brand and branch method is emplyed to obatain theoptimal solution. Simulation results show that our proposed algorithm canimprove system throughput and hit ratio of video segment, and at the same timedecrease playback frozen time and system backhaul traffic compared with otherexisting algorithms.

A More Refined Mobile Edge Cache Replacement Scheme for Adaptive Video Streaming with Mutual Cooperation in Multi-MEC Servers