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Method of Cell Selection and Reselection in Mobile Communication Systems Disclosure Number: IPCOM000020530D
Original Publication Date: 2003-Dec-25
Included in the Prior Art Database: 2003-Dec-25

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Frequent and periodic cell reselection within a GSM (Global System for Mobile Communications) environment has a pronounced negative impact on applications that are especially sensitive to momentary interruptions or jitter of downlink data flow. This is primarily due to the manner in which user mobility for GPRS (General Packet Radio Service) is managed. For Multimedia Broadcast/Multicast Services (MBMS), where often only short clips are transmitted, a cell change during an ongoing transmission means a significant degradation of the service. If pictures are to be transmitted, the application usually can not recover and the information is lost. Up to now, it is not really possible to hide the impact of the interruption of data during the transmission of streaming applications while changing the cell of a mobile communication system.