sig_strength_param: Set the mobloc parameters

In MobilePhoneESSnetBigData/mobloc: Mobile phone location algorithms and tools

Set the mobloc parameters

Description

Set the parameters used for the signal strength model and timing advance. The result is a list.

Usage

mobloc_param(
  W = 10,
  W_small = 5,
  ple = 3.75,
  ple_small = 6,
  ple_0 = 3.5,
  ple_1 = 4,
  midpoint = -92.5,
  steepness = 1/5,
  range = 10000,
  range_small = 1000,
  height = 30,
  height_small = 8,
  tilt = 5,
  beam_v = 9,
  beam_h = 65,
  azim_dB_back = -30,
  elev_dB_back = -30,
  sig_d_th = 0.005,
  max_overlapping_cells = 100,
  TA_step = 78.12,
  TA_max = 1282,
  TA_buffer = 1
)

Arguments

W	default power in Watt of a normal cell (placed in a cell tower or rooftop site)
W_small	default power in Watt of a small cell (omnidirectional)
ple	default path loss exponent
ple_small	path loss exponent for small cells
ple_0	path loss exponent for free space
ple_1	path loss exponent for dense environments
midpoint	midpoint of the logistic function used to map signal strength to signal dominance
steepness	steepness of the logistic function used to map signal strength to signal dominance
range	maximum range of normal cells
range_small	maximum range of small cells
height	default height of normal cells
height_small	default height of small cells
tilt	default (horizontal) tilt. Only applicable for directional cells
beam_v	default vertical beam width. Only applicable for directional cells
beam_h	default horizontal beam width. Only applicable for directional cells
azim_dB_back	difference in signal strength between front and back
elev_dB_back	difference in signal strength between front and back
sig_d_th	signal dominance threshold
max_overlapping_cells	maximum number of cells that may overlap per raster tile. If the actual number exceeds this parameter, the max_overlapping_cells cells with the highest signal strength are selected
TA_step	meters that correspond to one Timing Advance (TA) step. This parameter depends on the network technology and psychical properties such as air pressure. In GSM networks it is approximately 554 meters https://people.csail.mit.edu/bkph/cellular_repeater_TA.shtml, and LTE (4G) networks 78.12 meters.https://www.scribd.com/doc/290553975/Timing-Advance-TA-in-LTE
TA_max	maximum Timing Advance (TA) value (integer). In other words, TA can have a value between 0 and TA_max. In GSM it is 63, and in LTE 1282.
TA_buffer	buffer to prevent artifacts in the TA to grid tile conversion. These artifacts occur when TA_step is similar or smaller than the width of a grid tile. TA_buffer is an integer that determines the number of TA steps that are added in front of behind the actual TA band.

Value

parameter list

See Also

vignette("mobloc")

Examples

# set parameters
ZL_param <- mobloc_param()

MobilePhoneESSnetBigData/mobloc documentation built on Feb. 18, 2024, 3:41 a.m.