Into the Wild: Energy Efficient Research by Sumathi M & Pandikumar S

Into the Wild: Energy Efficient Research by Sumathi M & Pandikumar S

Author:Sumathi M & Pandikumar S [M, Sumathi]
Language: eng
Format: azw3
Publisher: Naplin Publications, Madurai, India
Published: 2019-02-08T16:00:00+00:00


5. Influence of Apps in Energy Consumption

In general, performance and efficacy of every computing device is entirely depended on the processing unit – there is no different opinion. Despite the performance of the computing device is directly influence by the software. Hardware activities are tuned by software’s. So it’s correct to say software is the brain of hardware.

According to energy consumption, if the hardware consumes more energy, the application is mere responsible. The above philosophy is applicable to mobile phone environment also. We all know mobile phone is battery operated device so we should care about backup of battery and its working principles. Usually the average battery backup of the mobile phone is just one day. The major energy consuming unit of the mobile phone is categories into

 Display Unit

 Core Processing Unit

 Network Unit

Those three are the logical categories of energy consuming units. Display and processing units are apart from our research area. The network unit of the mobile phone is the most energy consuming unit [56, 59]. The core network operations are Call Management, Cell Updates, and Paging etc. All of the above operations are performed by mobile operating system and service provider by default without the user influences. Apart from this the network unit is utilized or controlled by Mobile Apps for their transactions.

Apps are most important one in smartphone. The Apps is nothing but the special program for smartphone designed for particular operations. All the Apps should respond to the user instruction and perform but at the same time it does something by its own. For example Apps update themselves, send data to servers, and messenger apps always connect with their server etc.

There are 3.5 million and 2.2 million apps available in Google play store and Apple store respectively [134] and the growth rate is tremendous. As per the statistics there are 197 billion apps were downloaded from the App stores, by 2021 the total app downloads number will jump to a stunning 352 billion. In that, 11% are entertainment, 23% are games, 10% are utility etc. By the growth of Apps the users do not use mobile browsing to get services. For example facebook, banking transaction, bills and tickets. Every phone has minimum of 15 apps averagely. In that, all the Apps should connect to their server without knowledge of the user. It leads energy consumption. Smartphones are using radio network frequently and wasted radio resources by their unnecessary activities [29].

The study [59] exposes 61% of the apps usage energy is spending in their IDLE states. This data confirms the mobile apps are consuming energy un-necessarily without the knowledge of the users. Before the determination of IDLE energy consumption we should wakeup and answer some abstract question ourselves to move towards the confirmation

 How much energy is consumed by individual applications?

 How much energy is consumed by the idle state of an application?

 Is it necessary to account for idle state energy?

 How much energy is consumed by the different components of smartphone?

 What granularity



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