Shengkui Gao, [email protected] (A paper written under the guidance of Prof.Raj Jain) DownloadThe performance analysis and measurement of smart phones is becoming a hot research topic in mobile computing researchsociety. In this paper, major evaluation parameters and metrics for different performance aspects (hardware, additionalmodules, software, system and usage) of the smart phone design are introduced, and some latest development of smartphone are also discussed. It is shown that achieving higher power and performance efficiency, and better user experienceare the two main goals of various aspects of smart phone design.Keywords: smart phone, performance evaluation, measurement, user experience, RRC, 3G, directional antenna, keypad,GPS, Visual interaction, VoIP, Wi-Fi, code-offload, mobile security, smart phone OS, smart phone usage, middleware, cross-cultural factor.1. Introduction2. Hardware Performance2.1 Network Performance2.1.1 Network carrier performance2.1.2 Radio resources allocation performance2.2 Antenna diversity performance2.3 Keypad input performance3. Additional Modules Performance3.1. GPS module performance3.2. Camera module performance3.3. Wi-Fi data communication4. Software Performance4.1. Code offload performance4.2. Security Performance5. System Performance5.1 Phone tasks performance5.1.1 Cross-platforms phone tasks performance5.1.2 Different tasks modeling on smart phones5.2 Smart phones middleware development and performance6. Smart Phones Usage Performance6.1. Usage diversity of smart phones6.2. Cultural Differences evaluation of smart phones7. Summary8. References9. List of AcronymsSmart phones are becoming more and more popular in recent years due to its multiple functions, portability and easy toaccess anywhere. Accompanying with the development of 3G and 4G communication network, the smart phone isgradually replacing the regular cell phone. In 2009, 14% of the worldwide mobile phone shipments were smart phonesA Survey of Latest Performance, Development and Measurement Issues o... http://www1.cse.wustl.edu/~jain/cse567-11/ftp/smartphn/index.html1 of 13 5/4/2011 4:53 PM[CanalysPress], and it's predicted to surpass the desktop PC sales by 2011. The performance analysis and measurement ofsmart phones are becoming a hot research topic in mobile computing research society. However, since the smart phone onlybecomes as a commercial product recently and many aspects still need to be further studied. Moreover, the smart phoneconfiguration and specs are relatively confidential among different cell phone producers. Therefore, there are quite fewpublic performance standards existing for smart phone performance evaluation.Table 1: Current mainstream smart phones specs.PhonebrandsIPhone4 HTC Evo 4GMotorola DroidXBlackberry 9700 Palm Pre Plus Samsung FocusOSMac iOS Android Android Blackberry Web OSWindows Phone7GPU speed28mtriangles/sec22mtriangles/sec14mtriangles/secN/A14mtriangles/sec22mtriangles/secCPU speed1GHz 1GHz 1GHz 624MHz 500MHz 1GhzMemorysize512MBLPDDR1512MBLPDDR1512MBLPDDR2256MB LPDDR1512MBLPDDR1512MBLPDDR1Storage16/32 GBinternal1 GB internal,microSD up to32GB8 GB internal,microSD up to32GB1 GB internal,microSD up to32GB16 GB internal8GB internal,microSD up to32 GBResolution960x640 3.5"LCD880x480 4.3"TFT854x480 3.7"LCD480x360 3.25"LCD480x320 3.1"LCD800x480 4"LCDCellular3GEDGE/3.5GHSDPA3G EV-DORev.A3.5G EV-DORev.A3.5G HSDPA/3GEV-DO Rev.A3.5GHSDPA/3GEV-DO Rev.A3G EDGE/3.5GHSDPACameraresolution5MP720P@30fps8MP720P@[email protected]@30fps3MP5MP720p@23fpsBattery1420 mAh 1500mAh 1570 mAh 1550 mAh 1150 mAh 1500 mAhSome main stream smart phone specs are shown in Table 1. Since the main specs of the smart phone such as CPU speed,memory size, I/O specs in hardware domain, code efficiency, function realization in software domain and mobile systemdesign have been studied by following the similar evaluation metrics and methods used in computer design. But in normalsmart phone use, the advanced smart phone may not perform well due to the constraints such as network, battery powerand used applications. Therefore, this paper will focus on the special characteristics performance and their impacts on smartphone, and also smart phone usage performance.In this paper, some latest design progress and new evaluation methods for different parts of smart phones are being brieflyintroduced. This paper is organized as follows: Session 2 introduces the hardware (network, radio resource, directionalantenna) performance and evaluation metrics of smart phone. Session 3 introduces additional modules (GPS, camera andWi-Fi) performance; Session 4 discusses about the software performance issues (code offload and mobile security); Session5 states the system level (different platforms, different task modeling and middleware design) performance and evaluationmethods; Session 6 discusses the usage (diversity of the usage and cross-cultural factor on smart phone usability)performance of the smart phone. And a brief summary of the smart phone performance is given in the Session 7.The hardware design of smart phone is a very important aspect due to its size limitation and battery life. The core parts ofsmart phone such as CPU, memory and I/O peripheral are used the similar performance analysis methods as used incomputer evaluation, power and speed are the key metrics. Furthermore, there are other special components andconstraints in the smart phone hardware design, such as cellular network performance, antenna configuration, keypad style,which are going to be stated below.2.1 Network performanceA Survey of Latest Performance, Development and Measurement Issues o... http://www1.cse.wustl.edu/~jain/cse567-11/ftp/smartphn/index.html2 of 13 5/4/2011 4:53 PMThe cellular communication network is the most important aspect to guarantee the smart phone realizing most of itsfunctions. Different network operators and different radio resources could greatly influence the performance of smartphones.2.1.1 Network carrier performanceDifferent network carrier can offer different network performance for the smart phones, even the same type of phone usedin different networks can performs differently. Since the main function of smart phone is surfing internet and gettingnetwork based services, the main evaluation object for smart phone network performance will be the data network. Recentpublished papers of network performance evaluation focused on understanding the network behavior for
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