The power allocated to control
channels may depend on equipment vendor recommendation. Typically no more than 20% of the total NodeB
power is allocated to control channels, including CPICH. However, if HSDPA is deployed on the same
carrier then the total power allocated to control channel may go up to 25 to
30% because of the additional HSDPA control channels required.
Showing posts with label NodeB. Show all posts
Showing posts with label NodeB. Show all posts
Saturday, September 3, 2011
Wednesday, June 1, 2011
How does UE camp (synchronize) to a NodeB?
1. UE uses the primary synchronization channel (P-SCH) for slot alignment (TS
synchronization).
2. After aligning to NodeB time slot, UE then uses secondary synchronization channel (SSCH) to obtain frame synchronization and scrambling code group identification.
3. UE then uses scrambling code ID to obtain CPICH, thus camping to a NodeB.
synchronization).
2. After aligning to NodeB time slot, UE then uses secondary synchronization channel (SSCH) to obtain frame synchronization and scrambling code group identification.
3. UE then uses scrambling code ID to obtain CPICH, thus camping to a NodeB.
Subscribe to:
Posts (Atom)