TY - GEN
T1 - A cross-layer cooperative caching for software-defined radio access networks
AU - Li, Qiang
AU - Shi, Wennian
AU - Zhang, Tao
AU - Chen, Tao
AU - Han, Tao
AU - Zhang, Jing
N1 - Funding Information:
The authors would like to acknowledge the support from China MOST Program of International S&T Cooperation under grants 2016YFE0133000, 2016YFE0119000, 2015DFG12580, and the National Natural Science Foundation of China (NSFC) under grants 61461136004, 61471180. This research is supported by the National international Scientific and Technological Cooperation Base of Green Communications and Networks (No. 2015B01008).
Funding Information:
The corresponding author is Tao Han (hantao@hust.edu.cn). The authors would like to acknowledge the support from China MOST Program of International S&T Cooperation under grants 2016YFE0133000, 2016YFE0119000, 2015DFG12580, and the National Natural Science Foundation of China (NSFC) under grants 61461136004, 61471180. This research is supported by the National international Scientific and Technological Cooperation Base of Green Communications and Networks (No. 2015B01008).
Publisher Copyright:
© 2017 IEEE.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/4/2
Y1 - 2018/4/2
N2 - To ease the contradiction between the explosive growth of mobile data traffic and the capacity-limited backhaul networks, content caching is considered in a software-defined radio access network (SD-RAN) in this paper. Equipped with low-cost storage units, popular contents that are frequently requested by users can be cached at both the centralized macro-cell base station (MBS) at which the main control logics are installed, and the distributed small-cell base stations (SBSs) that are mainly responsible for data transmissions. With an objective of minimizing the average content provisioning cost of SD-RAN, a storage allocation is formulated between the MBS and SBSs subjected to a sum storage constraint. Firstly, a non-cooperative caching strategy is proposed, where the MBS and SBSs cache popular contents independently. In order to better utilize the available storage for achieving more efficient caching, a cross-layer cooperative caching strategy is then proposed by leveraging the cooperation and coordination between the MBS and SBSs. Results demonstrate that the average content provisioning cost of SD-RAN can be significantly reduced by using the analytically obtained optimal storage allocation factor, and the proposed cross-layer cooperative caching always outperforms the non-cooperative caching.
AB - To ease the contradiction between the explosive growth of mobile data traffic and the capacity-limited backhaul networks, content caching is considered in a software-defined radio access network (SD-RAN) in this paper. Equipped with low-cost storage units, popular contents that are frequently requested by users can be cached at both the centralized macro-cell base station (MBS) at which the main control logics are installed, and the distributed small-cell base stations (SBSs) that are mainly responsible for data transmissions. With an objective of minimizing the average content provisioning cost of SD-RAN, a storage allocation is formulated between the MBS and SBSs subjected to a sum storage constraint. Firstly, a non-cooperative caching strategy is proposed, where the MBS and SBSs cache popular contents independently. In order to better utilize the available storage for achieving more efficient caching, a cross-layer cooperative caching strategy is then proposed by leveraging the cooperation and coordination between the MBS and SBSs. Results demonstrate that the average content provisioning cost of SD-RAN can be significantly reduced by using the analytically obtained optimal storage allocation factor, and the proposed cross-layer cooperative caching always outperforms the non-cooperative caching.
KW - content provisioning cost
KW - control-data separation
KW - cooperative caching
KW - Software-defined radio access networks
UR - http://www.scopus.com/inward/record.url?scp=85038836035&partnerID=8YFLogxK
U2 - 10.1109/ICCChina.2017.8330351
DO - 10.1109/ICCChina.2017.8330351
M3 - Conference article in proceedings
AN - SCOPUS:85038836035
SN - 978-1-5386-4503-1
SP - 1
EP - 6
BT - 2017 IEEE/CIC International Conference on Communications in China, ICCC 2017
PB - IEEE Institute of Electrical and Electronic Engineers
T2 - 2017 IEEE/CIC International Conference on Communications in China, ICCC 2017
Y2 - 22 October 2017 through 24 October 2017
ER -