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ZK Services performs walk and drive testing services for all types of applications. Our inventory includes, walk/drive test equipment, mapping and reporting software, various antennas, CW transmitters, 25 foot elevating mast, etc.. We have engineers based all over the US and in various countries around the world.
Copyright 2013
ZK Services, LLC
ZK Services, LLC
Benchmarking - Prior to a DAS install the venue must be tested in terms of how it is affected by the surrounding macro cellsites. ZK Services uses Operator approved scanner equipment that can perform a scan of the entire range of cellular frequencies and technologies to determine which channels are transmitting in the area. The venue is walked collecting key parameters on all of the transmitting channels. All channels for each Operator are plotted for each level or section of the venue. In addition, CSV files are provided for direct import into RF Design software such as iBwave and others.

CW and PIM Testing - Typically a short time after the benchmarking test is done and an initial system design is complete the CW and PIM tests need to be performed. Data from CW and PIM testing is used to fine tune the DAS design. ZK services owns CW test transmitters for all cellular bands with a wide range of output power. Multiple frequencies can be transmitting simultaneously making the testing go quickly. Coverage plots, csv files and PIM reports are delivered for each frequency and each CW/PIM location.

System Validation - Once the DAS is installed and operating a validation test is performed to test the user experience. Handsets are typically used in addition to scanning for this test. Voice and data calls are performed to test quality and data speeds. Channels are also scanned for coverage. ZK Services provides a custom report indicating the performance level and comparison to requirements for the venue.

Quality of Service (QoS)- For networks that are up and running a QoS test is extremely valuable. This test consists of performing hundreds of voice calls and data transfers in order to determine call statistics such as blocked and dropped calls, audio quality, data throughput rates and other parameters that are important to user perception A detailed report along with an executive summary is provided identifying problem areas and offering suggestions for improvement.

E911 Location Testing - In emergency situations first responders need to know the location of the wireless caller. ZK Services assists the E911 technology providers in testing and improving the wireless location algorithms and technologies.

Problem Identification and Solving - In some cases problems in the network cause disruption in quality of service and a third unbiased party is called in to identify the cause. ZK Services has many years of experience troubleshooting RF issues and can provide key data and recommendations in solving network issues.