Enhanced Spectrum Efficiency

Cellular network operators constantly strive to maximize their usage of available spectrum with the increasing growth in their network traffic. When capacity is constrained, operators must resort to adding more radio spectrum, new sites, or more sectors per site. However, by more efficiently using the existing spectrum, Quintel reduces the costs and delays associated with adding new sectors or new sites, or having to acquire or lease new spectrum.

QTilt™ has two major applications to enhance spectrum efficiency:
  1. F1/F2 Independent Tilt: In order to more efficiently re-use existing spectrum, Quintel creates two independent beams per sector of two different RF channels. Each of these beams is of the same technology and same operator, creating a macroscopic form of cell planning diversity across the network. This can be applied to any technology which uses multiple channels. As shown in diagram 1 at left, this enables higher capacity than with the existing antennas.
  2. Code1/Code2 Independent Tilt: Quintel creates two independent beams in elevation per sector of the same cdma-or WCDMA-based technology and RF channel, and operator, to create cell splitting in the elevation plane, as demonstrated in diagram 2 at left.
QTilt offers the same benefits as deploying multiple separate antennas at a site. Users of these applications will benefit from greater spectrum efficiency, coverage, and capacity utilization.

Quintel supports Multiple Operators concurrently and independently:
  • On a single antenna array, two separate RF beams within the same cellular spectrum band support the independent optimization of two different operators delivering different technologies
  • Two different operators can use the same or different access technologies
Service 1 Service 2
UMTS 2100 (F1) UMTS 2100 (F2)
UMTS 2100 (F1/Scr Code 1) UMTS 2100 (F1/Scr Code 2)
GSM900 (BCCH1 full re-use) GSM900 (BCCH2 fractional re-use)
cdma1x (F1) cmda1x (F2)
cdma1x (F1/PN Code 1) cdma1x (F1/PN Code 2)
LTE2600 (F1 full re-use) LTE2600 (F2, F3, F4 fractional re-use)
DVB-H (F1 full re-use) DVB-H (F2,F3, F4 fractional re-use)

Cellular network performance is the prime driver for the deployment of QTilt, as up to a 40 percent performance gain can be achieved over multiple sites, and even more improvement is realized for individual hot-spot, high-traffic sites. This enhanced utilization of existing spectrum and site assets translates into an improved customer service experience and increased operator efficiency.

Discover how Quintel supports these applications with QTilt technology.