·
RSCP: RSCP is simply defined as Received
Signal Code Power on one code after dispreading
·
Ec\Io: It is defined as the ratio of energy
per chip in CPICH to the total received power density
·
Scrambling Codes:
Downlink Scrambling Codes
v
3 types of scrambling codes
are available in DL: primary, secondary and alternative.
v
Downlink primary scrambling
codes are used for cell separation. One primary scrambling code, is allocated
for each cell.
Uplink Scrambling Codes
v
2 types of scrambling codes
are available in UL : long and short.
v
Only the long ones are used. Uplink scrambling
codes are used for separating the different UEs in the same cell. RNC allocates the code.
Cell Breathing
v
With more and more users
coming into a cell, the actual power available for services is lesser than the
power available in an empty cell. So the overall coverage of the cell shrinks.
v
Cell breathing is more of a
planning issue and has to be considered at the planning stage itself. Proper
handover regions should be planned, to avoid any coverage gaps.
