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Difference between Rel'99 and Rel'5 HSDPA

+3 votes

Can anyone explain the difference between Rel'99 and HSDPA(Rel'5)?

posted Sep 25, 2013 by Giri Prasad

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1 Answer

+1 vote

Release 5 HSDPA offers 10.8 MBPS speed, where as Rel'99 offers only 2.048 MBPS. Reason for Improvement in Rel5 over Release 99 are
1. Improved Channel Structure - (HS-DSCH and HS-SCCH added for downlink and HD-DPCCH added for uplink)
2. Improved Packet scheduling (MAC-HS)
3. Adaptive Modulation and Coding (AMC)

For more detail please look at

answer Sep 25, 2013 by Salil Agrawal
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