Coordinating Rolling Software Upgrades for Cellular Networks

被引:0
|
作者
Qureshi, Mubashir Adnan [1 ]
Mahimkar, Ajay [2 ]
Qiu, Lili [1 ]
Ge, Zihui [2 ]
Zhang, Max [2 ]
Brouslis, Ioannis [2 ]
机构
[1] Univ Texas Austin, Austin, TX 78712 USA
[2] AT&T, Dallas, TX USA
来源
2017 IEEE 25TH INTERNATIONAL CONFERENCE ON NETWORK PROTOCOLS (ICNP) | 2017年
关键词
D O I
暂无
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
Cellular service providers continuously upgrade their network software on base stations to introduce new service features, fix software bugs, enhance quality of experience to users, or patch security vulnerabilities. A software upgrade typically requires the network element to be taken out of service, which can potentially degrade the service to users. Thus, the new software is deployed across the network using a rolling upgrade model such that the service impact during the roll-out is minimized. A sequential roll-out guarantees minimal impact but increases the deployment time thereby incurring a significant human cost and time in monitoring the upgrade. A networkwide concurrent roll-out guarantees minimal deployment time but can result in a significant service impact. The goal is to strike a balance between deployment time and service impact during the upgrade. In this paper, we first present our findings from analyzing upgrades in operational networks and discussions with network operators and exposing the challenges in rolling software upgrades. We propose a new framework Concord to effectively coordinate software upgrades across the network that balances the deployment time and service impact. We evaluate Concord using real-world data collected from a large operational cellular network and demonstrate the benefits and tradeoffs. We also present a prototype deployment of Concord using a smallscale LTE testbed deployed indoors in a corporate building.
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页数:10
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