Cellular / PCS Engineering Capabilities

General Technical Features:

• Coverage for 1G, 2G and 2.5G cellular and PCS systems.
• Support for W-CDMA, 3XRTT and evolving 3G technologies in any frequency band.
• Support for AMPS, NAMPS, TDMA (IS-136), GSM, CDMA(IS-95), iDEN®, GPRS, EDGE, and 1XRTT technologies in any frequency band.

Specialized studies include:

3G Specific

• Available data rates based on channel quality and Eb/No.
• Best and second best server based on Pilot Ec/lo or traffic
• Handoff (hard, soft, softer, soft+softer, 3-way soft, 4-way, 5-way, 6-way)
• Downlink Eb/No, Uplink Eb/No, Uplink BER, and Uplink mobile power
• Sector scrambling conflict analysis (signal ratio and time delay)
• Static or dynamic Monte Carlo analysis to determine system loading and performance assuming mobile movement and packet origination distribution. Loading limits determined by total mobiles or soft-blocking rates. Random mobile placement is controlled by selected traffic distribution.
• Packet-switched traffic distribution control, including separate control of user-defined service mixes such as voice, e-mail, web browsing, audio streaming, and video streaming.
• Quality of Service (QoS) assessment based on net throughput and latency
• Traffic loading studies to estimate of total data traffic load per sector using uniform loading, land use, demographic, or traffic data

CDMA Specific

• CDMA best server based on pilot (Ec/No) or on traffic (Eb/Nt)
• CDMA handoffs (hard, soft, softer, soft+softer, 3-way soft, 4-way, 5-way, 6-way) and non-CDMA handoff regions
• CDMA reverse link BER with forward and reverse link frame error rate
• Strongest CDMA pilot Ec/Io and number of CDMA pilots above T_add
• CDMA forward link and leverse link Eb/No
• Number of CDMA mobiles support for target Eb/No
• CDMA PN offset / Scrambling code conflicts and neighbor list calculations
• CDMA reverse link ERP to achieve target Eb/No, also based on traffic
• 1XRTT maximum data rate
• Available non-CDMA channels
• Support for CDMA RAKE receivers
• Static Monte Carlo analysis determines loading and performance for the CDMA systems. Random mobile placement is controlled by selected traffic distribution. Loading limits determined by total mobiles or soft-blocking rates. Takes into account adaptive (“smart”) antenna C/I ratio improvements.

GSM Specific

• RxQual for control & traffic channels and worst-case channel RxQual
• Frame Erasure Rate (FER), Bit Error Rate (BER), AMR Code Rate, and RxLev
• GPRS Block Error Rate (BLER)
• GPRS maximum mobile data rate
• EDGE maximum mobile data rate
• Analysis of sector-specific automatic traffic loading, circuit-switched and packet-switched traffic loading as weighted by land use data, demographic data, traffic data, or a fixed grid. Packet-switched traffic distributions can be designed to model a combination of service types such as voice, e-mail, web browsing, audio streaming, and video streaming.
• Evaluation of signal levels (received power, field strength, etc.) and C/(I+N) ratios with channel assignments, most-likely server (MLS) analysis, and blocking rate with predicted or measured sector voice traffic
• Virtual Drive Test™, a trademark of EDX / Comarco, provides simulated drive through network with 3D visual display from driver’s perspective. Signal levels, serving sectors; handoffs, etc. are displayed as the drive progresses.
• Frequency planning is performed using standard or user-defined channel plan templates.
• System layout is performed for cells, hubs and customer terminals for user-defined areas using criteria such as: fixed hexagon/rectangular grids, land use types, building rooftops, or data traffic demand density. Planning can include adaptive automatic power control (APC) on reverse links to achieve fade margin or percent service availability targets in order to overcome noise and interference.

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