Coverage Analysis- LTE Coverage Optimization

//Coverage Analysis- LTE Coverage Optimization

Coverage Analysis- LTE Coverage Optimization

Coverage Analysis- LTE Coverage Optimization

Coverage Analysis- LTE Coverage Optimization

LTE may use a variety of frequency planning options. Examples include frequency reuse of 1 (N=1), static partial frequency reuse and soft frequency reuse.

However, due to spectrum availability, current implementations and deployment scenarios utilize N=1 frequency reuse, hence, inter-cell interference is an ever present issue.

System performance and overall service quality are directly related to the degree to which interference can be controlled. However, some cell overlap is desirable to ensure the reliability of handoff between cells, and to accommodate load.

Unfortunately, cell overlap decreases the amount of resource blocks that can be used at the call edge. The more cell overlap, the more resource blocks are prevented to be used at the cell edge simultaneously in different cells. So, the trick is getting just the right coverage (overlap)- not too much, not too little.

In summary, the focus is on:

  • Improved RSRP: Maintaining excellent RSRP facilitates fast and accurate cell selection and re-selection, and thus reduced connection setup time.
  • Improved SINR: Higher SINR is a result of reduced interference (reduced pollution) from nearby cells. Higher SINR facilitates the ability to deliver higher throughput using higher order modulation and/ or MIMO.
  • Infrequent transitions of a dominant server: This facilitates a reduced need for handovers, which results into improved retainability, higher throughput and reduced latency.

‣If the RSRP and SINR are strong, our ability to decode the useful information that comes on the PDSCH and PUSCH is improved, and thus we have a system that has excellent accessibility, retainability, and integrity (throughput and latency) KPIs.

You may also like to go through What is RF Optimization?, 4G-LTE KPIs, 3GPP Accessibility KPI, Retainability KPI in LTEThroughput KPI & Latency KPI, Mobility KPICell Availability KPI in LTE, Coverage of an LTE CellCell-specific DL Reference Signal, UE Measurement- Reference Signal Received Power (RSRP)RSRQ and SINR.

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