Joint cloud and edge processing for latency minimization in Fog Radio Access Networks

Seok Hwan Park, Osvaldo Simeone, Shlomo Shamai

פרסום מחקרי: פרק בספר / בדוח / בכנספרסום בספר כנסביקורת עמיתים

תקציר

This work studies the joint design of cloud and edge processing for latency minimization in the downlink of a fog radio access network (F-RAN). In an F-RAN, edge processing allows the low-latency delivery of popular multimedia content by leveraging caching at enhanced remote radio heads (eRRHs). Cloud processing, instead, enables the transmission of arbitrary content at high spectral efficiencies thanks to the centralized control at a baseband processing unit (BBU), but at the cost of a potentially larger latency due to BBU-to-eRRHs communication over fronthaul links. For an arbitrary caching, or pre-fetching, strategy, the design of the delivery phase is studied based on the use of the fronthaul links in either or both hard-transfer and soft-transfer modes. The problem of minimizing the delivery latency, encompassing both fronthaul and wireless transmissions, of the requested contents from the BBU to the requesting user equipments (UEs) is tackled with respect to channel precoding and fronthaul compression strategies. Numerical results are provided to compare the latency performance of the hard- and soft-transfer fronthauling schemes in terms of delivery latency, offering new insights as compared to existing studies that focus solely on the transmission rate of the wireless segment.

שפה מקוריתאנגלית
כותר פרסום המארחSPAWC 2016 - 17th IEEE International Workshop on Signal Processing Advances in Wireless Communications
מסת"ב (אלקטרוני)9781509017492
מזהי עצם דיגיטלי (DOIs)
סטטוס פרסוםפורסם - 9 אוג׳ 2016
אירוע17th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2016 - Edinburgh, בריטניה
משך הזמן: 3 יולי 20166 יולי 2016

סדרות פרסומים

שםIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
כרך2016-August

כנס

כנס17th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2016
מדינה/אזורבריטניה
עירEdinburgh
תקופה3/07/166/07/16

ASJC Scopus subject areas

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