Cooperative Positioning for Mobile Phone
Indoor positioning for mobile phone is important for many applications. The widely used mobile phone indoor positioning technique need to pre-located anchor nodes, or collect fingerprint for the indoor environment. Peer-to-Peer Hybrid Cooperative Position
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Cooperative Positioning for Mobile Phone Qiang Chang, Qun Li, Hongtao Hou, Wangxun Zhang and Weiping Wang
Abstract Indoor positioning for mobile phone is important for many applications. The widely used mobile phone indoor positioning technique need to pre-located anchor nodes, or collect fingerprint for the indoor environment. Peer-to-Peer Hybrid Cooperative Positioning (P2P-HCP) is a novel indoor positioning technology to provide reliable, GNSS-like navigation performance in hostile, GNSSchallenged environments. A new P2P-HCP algorithm is proposed for mobile phone indoor positioning. In this algorithm, short-range communication is used to exchange location information. A novel data fusion algorithm is proposed to fuse both navigation satellite information and located neighboring phones’ information to estimate position. Simulation result shows that the proposed algorithm offers a good performance in accuracy and coverage in indoor environment without any priority information or pre-located anchor nodes. Keywords GNSS challenged environment fusion Mobile phone
Cooperative positioning
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56.1 Introduction In the second decades of the 21st century, smart mobile phone becomes more and more widely used as the development of hardware and software technique. Most of our common used mobile phone has equipped with quite a lot of sensors, such as light sensor, gravity sensor and so on. And the computation ability becomes more and more powerful. By installing variety of software, we can nearly do everything by using mobile phone. The combination of internet and mobile phone Q. Chang (&) Q. Li H. Hou W. Zhang W. Wang College of Information System and Management, National University of Defense Technology, Changsha 410073, China e-mail: [email protected]
J. Sun et al. (eds.), China Satellite Navigation Conference (CSNC) 2014 Proceedings: Volume III, Lecture Notes in Electrical Engineering 305, DOI: 10.1007/978-3-642-54740-9_56, Springer-Verlag Berlin Heidelberg 2014
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push us into the age of mobile internet. In the era of mobile internet, Location Based Service (LBS) developed dramatically. The integration of traditional service and location service brings about a great deal of innovation applications. All of these LBS applications have the same requirement: the user’s position must be acquired at any place at any time. However, the widely used technique, such as GNSS [1], Wireless Sensor Networks (WSN) [2], AGNSS [3, 4] and fingerprint can’t provide proper positioning performance for LBS applications. Although most of the mobile phones are equipped with GNSS chips, but the phone users stayed in GNSS challenged environment at most of the time, such as urban canyons, heavy tree shadowed and indoor scenarios. More ever, the most widely used AGNSS positioning performs bad in accuracy in indoor environment. Wireless Sensor Networks (WSN) positioning is developed for indoor positioning and works well if there is some anchor sensors located in come critical position. But this tech
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