10 rn3154aen50gla0 initial parameter planning
DESCRIPTION
10 RN3154AEN50GLA0 Initial Parameter PlanningTRANSCRIPT
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Scrambling codes organized into 512 primary and 512 * 15 secondary codes
Planning required for primary scrambling codes only
To each cell 1 primary scrambling code has to be assigned
To each primary scrambling code 15 secondary scrambling codes are referred automatically
Primary scrambling codes organized into 64 groups, each having 8 codes
Can maximize the number of neighbors belonging to different groups
fast decoding of neighbors on S-SCH, slow on CPICH
Can maximize the number of neighbors belonging to same group
slow decoding of neighbors on S-SCH, fast on CPICH
Difference between the two strategies depends mainly on UE implementation
Recommendation of SC planing:
• Isolation between cells assigned the same scrambling code should be maximized
• UE should never simultaneously receive the same scrambling code from more than 1 cell
• UE should never receives a scrambling code from one cell while expecting to receive the
same scrambling code from second cell
• Scrambling code planning should be completed in conjunction with
• Neighbor list planning
• Neighbor list audits
• Coordination at international borders
• Specific scrambling codes should be excluded from the plan to allow for future network expansion
• If two (or more) RF carries serve the same coverage area, the same scrambling code should be assigned to each of them (although scrambling codes can be assigned carrier independent)
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Feature Soft Handover based on DSR also allows HO to cell not specified in ADJS objects.
However HO is only possible to cell which are specified by ADJD objects
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The exact max number of neighbors depends on the configuration of the cells.
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