The satellite phones are endowed with adequate infrastructure enabling compatibility across networks hence no roaming fees are charged as one can use the same handset anywhere in the world to access services. This network compatibility capability is due to its global spanning infrastructure (Lim, Klein & Thatcher 2005, p.49). 1.3 The advantages and disadvantages of LEO compared with GEO LEO and GEO are acronyms standing for Low Earth Orbit and Geo-synchronous Earth Orbit respectively. The two types of satellite systems are differentiated in terms of the distance they orbit from the earth’s surface, The LEO system orbit at a maximum of 1,800 miles from the earth’s surface whereas the GEO system orbits at a maximum of 22,300 miles from the earth’s surface (Lim, Klein & Thatcher 2005, p.50). 1.3.1 Advantages LEO satellites offer strong signal strength compared to GEO satellites which offer weak signals (Lim, Klein & Thatcher 2005, p. 50). This is because this system of satellite orbits at a shorter distance from the earth’s surface.
Because of the strong signal, LEO satellites are capable of utilizing phones that use small omni-directional antenna (Lim, Klein & Thatcher 2005, p. 50). 1.3.2 Disadvantages Because of their relatively shorter distance from the earth, LEO satellites move more rapidly hence require systems that could constantly switch users’ signals from one satellite to another (Lim, Klein & Thatcher 2005, p. 50). This presents more technical expenses. LEO satellites have a shorter lifespan of 5 years compared to the longer lifespan of 15 years and thus degrade faster compared to the GEO satellites.
LEO are expensive since they wear out too quickly than GEO satellites and thus are replaced more often compared to GEO satellites (Lim, Klein & Thatcher 2005, p. 50). 1.4 What the terrestrial mobile phone companies did to cope with their narrow service region They started offering phone packages that included unlimited minutes and stopped charging roaming fees (Lim, Klein & Thatcher 2005, p. 49). They lowered call rates making it cheaper to communicate compared to when one is using a satellite phone (Lim, Klein & Thatcher 2005 p. 49). 1.
5 What market did Iridium try to target? It tried to target large corporate customers who included oil and aviation companies. Iridium ignored small businesses and residents of remote regions (Lim, Klein & Thatcher 2005, p. 53). 1.6 How mobile phone companies developed “substitute services” for Iridium They lowered costs incurred by customers through introducing low air-time fees and reducing start-up costs for the customers. Mobile phone companies also addressed the challenge of poor signal quality (Lim, Klein & Thatcher 2005, p. 53). Customers were no longer subjected to roaming fees as it was abolished.
(Lim, Klein & Thatcher 2005, p. 53). 2.0 Part 2 (Essay). 2.1 Mobile Computing 2.1.1 Introduction Mobile computing can simply be defined as computing in an environment that has the capability of physical mobility. The user of mobile computing in this case has access to information from any gadget in any network while on transit (Talukder, Ahmed & Yavagal 2010, p. 5). It entails using computing systems that can be easily relocated physically and their computing abilities can still be utilized while they are being relocated.
Mobile computing systems exhibit wireless network connectivity, small sizes, mobility in nature and suitability for use by users in transit (B’Far 2003, p. 3). Mobile computing enables individuals to effectively communicate and share organizational information without being barred by physical location. This communication and interaction has been made possible by use of mobile computing devices such as smart phones, laptops, tablet PCs, personal digital assistant among others. These portable devices are able to interact with non-mobile information systems at the work place while the user is away from the workplace (Talukder, Ahmed & Yavagal 2010, p. 9).
Read More