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Seize highest coverage in 4G with this feature 1/2

Extended cell range

  • Deploy lower frequency bands: Using lower frequency bands (e.g., 700 MHz) propagate further and penetrate obstacles better than higher frequency bands
highest coverage in 4G based on frequency
  • Enhanced Antenna Systems: Deploying advanced antenna systems, such as MIMO (Multiple Input Multiple Output) and beamforming, can improve coverage and capacity in LTE networks. These technologies can focus signal strength in specific directions, potentially reaching further distances.
  • Cell Range Expansion (CRE): This technique involves adjusting network parameters to increase the coverage area of a cell. It optimizes parameters such as cell selection thresholds, handover parameters, and power levels. This allows mobile devices to maintain connections at greater distances from the cell site.
  • Rural Areas: Extended cell radius techniques are particularly useful in rural areas where deploying additional cell sites may not be cost-effective due to low population density.
  • Remote Locations: In remote locations, such as islands or mountainous regions, extending the cell radius can significantly improve connectivity without the need for extensive infrastructure investments.
FunctionScenario
Cell radius less than 15 kmThe cell radius is less than or equal to 15 km.
Cell radius greater than 15 km but lower than 100 kmThe cell radius is in the range of (15 km, 100 km].
Cell radius greater than 100 kmThe cell radius is in the range of (100 km, 200 km].

How highest coverage in 4G relates to Random Access Preamble Formats

Preamble FormatCyclic Prefix (CP) Length TCP (µs)Cell Radius (R) (km)Maximum RTD (µs)
0103.1R ≤ 14.596.7
1684.4R ≤ 77.3515.6
2203.1R ≤ 29.5196.8
3684.4R ≤ 100666.7
FDD
  • If cell radius is less than or equal to 15 km, the recommended preamble format is 0.
  • If cell radius is greater than 15 km, the recommended preamble format is 1, 2, or 3.
  • When the cell radius is greater than 100 km, the recommended preamble format is 3.
Preamble FormatCP Length TCP (µs)Cell Radius (R) (km)Maximum RTD (µs)Permissible Multipath Delay (µs)
0103.1R ≤ 14.596.76.4
1684.4R ≤ 77.3515.6168.3
2203.1R ≤ 29.5196.86.3
3684.4R ≤ 100666.717.3
414.6R≤ 1.4 km9.35.2
TDD
  • If the cell radius is less than or equal to 1.4 km, the recommended preamble format is 4.
  • If cell radius is greater than 1.4 km and less than or equal to 15 km, the recommended preamble format is 0.
  • When the cell radius is greater than 15 km, the recommended preamble format is 1, 2, or 3.

Highest coverage in 4G with cell radius greater than 100 Km (Only FDD)

  • Coverage limitation in the uplink for TTI Bundling and PUSCH IRC.
  • Closed-loop MIMO cannot work properly beyond 100 km.
  • VirtualGrid (SuperBand – Multi Carrier Unified Scheduling) cannot be built for cells using this functionality.
  • UL Comp
  • eMTC
  • 3D Beamforming
  • High speed mobility
  • NB-IoT
  • LTE+NR Spectrum Sharing

Activation MML

  • MOD CELL: LocalCellId=0, PreambleFmt=3, CellRadius=120000, CellRadiusStartLocation=20000;
  • MOD BBP: CN=0, SRN=0, SN=4, TYPE=UBBP, WM=FDD, SRT=FDD_ENHANCE;

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