Abstract
In state-of-the-art mobile devices (MDs), non-radio contexts (i.e., non-real-time data) provided by various sensors have been excluded in determining the modem configuration because of the problems in applying them in real-time modem operations. This paper presents a reconfiguration procedure and hardware implementation of a European Telecommunications Standards Institute (ETSI)-standard reconfigurable MD with a multi-antenna system. Borrowing the ETSI-standard architecture, the proposed MD can exploit a high-level abstraction of configuration-related operations, which consequently provides its application processor operating in non-real-time domain a uniform way of managing the multi-antenna-related hardware platform operating in real time. The configuration of the proposed MD is determined in accordance with non-radio and radio context information for opportunistically utilizing multiple antenna resources. From an implemented multi-antenna MD system operating in an indoor layout and computer simulations of the multi-antenna MD operating in a modeled outdoor layout, we verify that the MD configuration can be optimized in accordance with radio and non-radio contexts not only for fixed indoor but also for mobile outdoor environments. This enables the multi-antenna MD to efficiently utilize its antenna resources, such that the throughput maximization and/or power consumption minimization can be achieved.
Highlights
At present, most state-of-the-art mobile devices (MDs) are equipped with various sensors such as a gyroscope, an accelerometer, a global positioning system sensor, and a light sensor, which provide corresponding non-radio context information to MDs
This hybrid context information is used to determine the configuration of the prototype MD when it is operated at test point A or B
COMPUTER SIMULATIONS IN AN OUTDOOR LAYOUT In the preceding subsection, we present the radio frequency (RF) test results obtained from the two-antenna MD prototype, of which the configuration is determined by the radio and non-radio contexts in an indoor layout
Summary
Most state-of-the-art mobile devices (MDs) are equipped with various sensors such as a gyroscope, an accelerometer, a global positioning system sensor, and a light sensor, which provide corresponding non-radio context information to MDs. The objective is to optimize the desired KPIs by opportunistically utilizing all the hardware resources to the target RA, which is selected in accordance with the reconfiguration command generated in the application processor based on radio and non-radio contexts. Using the ETSI-standard architecture, the reconfiguration command generated with non-radio and radio context(s) in the application processor operating in the non-real time domain can efficiently be executed to control the MD configuration in the radio platform operating in the real-time domain. The implemented prototype system consists of two main parts, the application processor and radio computer The former includes the CSL, containing the Administrator, MPM, Networking Stack, and Monitor, which operate on Ubuntu 16.04 LTS, a non-real-time OS. Fourier transform (FFT)’ed received signal for each of the four-instruction cycles
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