Antenna for dense urban environment

[snabeel03]

While doing RF Planning,why we use small beam width antenna in dense urban environment?

[MRO3]

i think because of density on that special area we dont need to expand the beam

[aosan]

While doing RF Planning,why we use small beam width antenna in dense urban environment?

for the following:

1- limited the coverage
2- reduce overlap
2- increase the G and improve indoor coverage

[dekili]

Using small beam antennas allows you to have more sectors thus having biger capacity at the same area. In combination with power control, it allows you to have better frequency (code) reuse.
Directive antenna will provde better gain (as smaller the beam greater the gain) comparing to the omni atennas or semi-directive, thus giving better link budget and better signal to noise ratio.
Overlap is actually needed because of handovers (in the case of UMTS) but it has to be in a limited zone, otherwise it is not good. In urban areas you would probably need spot coverage so antenna with very small 3dB beam is good in providing coverage (capacity) and limiting interference.

[mimoX]

just to add, mostly dense urban environment shall comprises of high rise building.
coverage inside these building provided by indoor DAS system (to guarantee coverage + capacity). hence, the outdoor bts mainly to cover path ways, road which surround by high rise building. since the coverage is narrow, the use of narrow beamwidth antenna was the better option.

[mustafapkpk]

More deep indoor coverage by having more gain

[putrawhisnu]

dont to small, cause it may become road coverage

as example : you may compare between K739710, K739738 and K741623