AGPS (Assisted Global Positioning System)
FACH (Forward Access Channel)
Transport Channel (DL)
- Carries control information to UEs within a cell
- Carry small amount of packet data
- No power control
- Can have several FACHs. But the primary one must have low data rate in order to be received by all terminals.
- In-band signaling is needed to inform for which user the data was intended.
FP (Framing Protocol)
Framing protocol (FP) is a user plane protocol which operates on Iur and Iub interfaces and provides synchronization function between higher-layer radio access protocols.
HSDPA (High Speed Packet Downlink Access)
A dream beyond dream. HSDPA is also called 3.5G. Why 3.5G? Well the theory is that HSDPA doesn’t utilizes its ful potential. HSDPA offers 1.8 Mbit/s to 14.4 Mbit/s data rate in downlink direction.
Kasumi Algorithm
Ciphering algorithm used in UMTS. A replacement for A5.
KASUMI is a block ciphering algorithm that uses a 128 bit key and generates a 64 bit output stream from a 64 bit input stream.
NBAP (Node B Application Part)
Signalling protocol used by RNC to control Node B.
Processing Gain
Ratio of Chip rate and Symbol Rate
RSSI – Received Signal Strength Indicator
Softer Handover – Happens when a mobile station moves from once sector to another within same cell.
Resources
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