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Enhancements in Monitoring Capacity to GERAN Disclosure Number: IPCOM000034671D
Original Publication Date: 2005-Feb-25
Included in the Prior Art Database: 2005-Feb-25

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In GERAN (GSM (Global System for Mobile Communications) EDGE Radio Access Network), every idle frame (a TDMA (Time Division Multiple Access) frame with no time slot assigned to a particular terminal) is used to send control information via the Slow Associated Control Channel (SACCH). The idle frame is used for monitoring and measuring purposes (neighbor cells, different radio access technologies). Due to the limited time available, monitoring capabilities might become a limiting factor for terminals supporting various radio access technologies simultaneously. Up to now, an upper bound for the total number of cells to be monitored is defined. Depending on the number of frequency bands or radio access technologies to be monitored, the allowed time is extended and/or the number of cells per frequency or radio access technology is defined in order to not exceed the upper bound. Consequently, increasing the number of radio access technologies supported by terminal results in sketchy monitoring coverage and/or longer reporting periods.