Title :
Power consumption testing and optimization for mobile router based on data aggregation and compression
Author :
Yumei Wang ; Lin Zhang ; Hongyu An ; Bin Xu ; Geng Xi
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
Mobile router is a kind of network entity that can bridge a group of mobile stations to the Internet via a two-hop wireless relay. The running time of current commercial mobile router is quite unsatisfactory, which is typically 3-4 hours between charges. In this paper, we assess the power consumption of different parts (Le. the main board and the 3GIWLAN wireless interface) of a mobile router based on our testbed built on Panda board ES development board, which is called MoRo hereinafter. The testing results show that the wireless communication occupies more than one-third of the total power consumption of MoRo and the unmatched data rates between the two wireless interfaces of MoRo result in unnecessary power consumption on the local higher-rate wireless interface due to its intermittent transmission. Thus, we propose to cache the downloaded application data for one request at the mobile router, aggregate (Le. store and forward) and compress the data (e.g. different FTP (File Transfer Protocol) packets of a file, or different files of a web page), and then forward the bulk data with the size below a threshold to the mobile terminal via the local higher-rate interface all at once. The power testing results indicate that up to 18.4% reduction of the total energy consumption can be achieved.
Keywords :
data compression; mobile radio; telecommunication equipment testing; telecommunication network routing; telecommunication power management; transport protocols; wireless LAN; 3GIWLAN wireless interface; Internet; application data; data aggregation; data compression; file transfer protocol; mobile router; mobile stations; mobile terminal; power consumption testing; two-hop wireless relay; wireless interfaces; Multiaccess communication; Rail transportation; Semiconductor device measurement; Servers; Testing; Wireless LAN; Wireless communication; 3G; WLAN; data aggregation; mobile router; power saving;
Conference_Titel :
Wireless Personal Multimedia Communications (WPMC), 2013 16th International Symposium on
Conference_Location :
Atlantic City, NJ