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LTE Coverage Design and Performance Verification. TSB–88 For Public Safety LTE. Key Attributes of the Proposed LTE Coverage Design Procedure. Follow the well established TSB–88 definitions and procedures; however, using the LTE DRCPC
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LTE Coverage Design and Performance Verification TSB–88 For Public Safety LTE
Key Attributes of the Proposed LTE Coverage Design Procedure • Follow the well established TSB–88 definitions and procedures; however, using the LTE DRCPC • Data Rate Channel Performance Criterion (DRCPC) is the LTE coverage design criterion. • DRCPC is the minimum data rate required to meet the coverage design goal for a given application • The coverage design is done at a specific traffic load level • Interference depends on the LTE traffic load; therefore, coverage depends on the traffic load. • How about OOB IF? • Limit TSB – 88 update to LTE coverage design and verification for initial release
LTE Coverage Example • The DRCPC for this example is 500 kbps inbound and 1000 kbps outbound • The coverage boundaries are determined by the DRCPC • For performance verification, the data rate is measured throughout the service area • Measured data rate in a given geographic tile is compared to the DRCPC
Key Attributes of the Proposed LTE Verification Procedure • The primary verification criterion is measured data rate using • The verification procedure must provide a method to configure the traffic load to emulate the design traffic load • Downlink only? • Follow the well established TSB–88 definitions and procedures for measuring service area or covered area reliability • Define a grid of test tiles • Measure data rate in each tile and compare the measured data rate to the design DRCPC. • Need details on time averaging, etc. • Calculate the measured reliability as the ratio of test tiles with measured data rate greater than the DRCPC to the total number of test tiles • Limit TSB – 88 update to LTE coverage design and verification for initial release
Document Development Proposal • Create two new documents in the TSB–88 series • “Recommended Methods for BroadbandPerformance Modeling” • “BroadbandPerformance Verification”