hopping

Jun 18th, 2015
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American Health Science University
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GSM networks today are under mounting pressure to provide users with good quality communication equivalent to wireline networks while meeting increasing traffic load as a result of subscriber growth.

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bIntroductionGSM networks today are under mounting pressure to provide users with good quality communication equivalent to wireline networks while meeting increasing traffic load as a result of subscriber growth. In fact, many users use their phones as their main instrument for communication with friends, colleagues and clients.As networks complete their macrocellular layer, and are in the process of planning or rolling out a microcellular layer, subscriber growth continues unabated. If the network is to survive and satisfy its paying users, new solutions to capacity and quality have to be implemented immediately. In addition, any new capacity or quality solution should meet the following criteria:Increases Network Quality Increases Network CapacityEase of Feature RolloutUtilizes Existing Network InfrastructureThe best feature available today that meets the mentioned criteria is frequency hopping. Frequency hopping until recently is an underutilized feature in most GSM networks worldwide. The lack of use is mainly due to not understanding the planning rules, or not appreciating the capacity increase that frequency hopping can bring to the network. In the past, most networks were able to handle growth because additional spectrum was available, and macrocell sites could still be added to handle new subscribers. So there was not a great amount of interest to use this inherent feature of GSM to add capacity to the network. Today Motorola has extensive exper

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