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Capacity planning is based on:

Number of coverage sitesNeeded features

Possible micro, indoor & hotspot site implementation

Capacity planning is trade off: Coverage vs. Capacity

Increased capacity with macro layer means lower cell ranges

Increased coverage within macro layer means lower capacity

HSDPA implementation brings some new challenges

When using shared carrier with HSPA, capacity is shared between R99

& HSPA servicesIn order to guarantee high HSPA service availability then dedicated

HSPA carrier should be used. Thus Capacity in the DL is allocated for

HSDPA

In UL the capacity needs to be shared between R99 UL DCH & HSUPA

even in dedicated carrier

Capacity planning follows dimensioning results, but in detailed capacity

planning the sites can and might be needed to estimate per site method

This means that one site at the time is evaluated from the point ofcapacity

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Coverage limited scenario

Scenario is based on wrong estimation of either capacity or too lessnumber of sites

Decreasing system loading can be utilised to accommodate less

users in 1 cell

 Adding more sites to overcome coverage limitation

Lower increase in generated interference floor greater cell range

 more users in each cell greater actual system loading. 

Capacity limited scenarioCapacity demand is higher than what can be provided by an initial

number of Node Bs, resulting to

Maximum power or loading is exceeded, no services available

HSPA throughput (UL or DL) is lower than minimum throughput

Cell capacity must be increased or the cell size decreased, or by

adding additional carriers

Reduced cell range  fewer users loading the cell

Cell range decreasing commonly impacts on number of sites

Note: Capacity can also be increased with features

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