High Speed Packet Access (HSPA) feedback and signalling efficiency enhancements for Low Chip Rate (LCR) Time Division Duplex (TDD)
The present document summarizes the study results of the SI “HSPA Feedback and Signalling Efficiency Enhancements for LCR TDD”. The study results focus on the following three study items.
(1) CQI feedback enhancement
• Evaluate the impact the discontinuous CQI feedback will create
• If needed, find out how to solve the problem the discontinuous CQI feedback will create
• Evaluate how much gain will be obtained with the new methods.
(2) HSPA control channel efficiency optimisation
◦ find out the new methods for increasing the HSPA control channel efficiency.
• Evaluate how much gain will be obtained with the new methods.
(3) HSPA signalling enhancements for more efficient resource usage
◦ find out the new methods for more efficient HSPA resource usage
◦ Evaluate how much gain will be obtained with the new methods.