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US 6,606,313 B1Granted
Random access in a mobile telecommunications system
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsErik Dahlman, Per Beming, Maria Gustafsson
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AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsErik Dahlman, Per Beming, Maria Gustafsson
Estimating the term…
A method for processing multiple random access requests is disclosed in which a base station transmits an acquisition indicator signal, which indicates that the base station has detected the presence of a random access transmission. The acquisition indicator can be generated based on the amount of energy received on the random access channel (e.g., as opposed to the correct/incorrect decoding of a random access message). Consequently, the delay between the beginning of the random access transmission and the beginning of the acquisition indicator transmission is significantly shorter than the delay to the beginning of an acknowledgment transmission based on the reception of a correctly decoded random access message. If a mobile station does not receive a positive acquisition indicator, it should interrupt the present transmission and start to re-transmit the random access burst in the next time slot, while modifying the transmission power level accordingly between the successive re-transmissions.
A method for improving the performance of a random access mobile communications system, comprising the steps of:
A random access communications system, comprising:
A method for improving the performance of a random access mobile communications system, said method comprising the steps of:
A method for improving the performance of a random access mobile communication system, said method comprising the steps of:
A base station within a mobile communication system comprising:
Dependencies are inferred from the claim text.