random_node_deployer.py

from random import random
from math import tan, pi
from location_2d import Location2D
from loragw import LoraGW

class RandomNodeDeployment():
    """
    Deploys nodes in a 2D disc with GW at the centre
    """

    @classmethod
    def deploy_nodes(cls, num_nodes, Node, channel_model, area, **kwargs):
        """
        Nodes are laid out randomly in an area of given size.
        No guarantees of connectivity are given if the area size is provided.
        Returns tuple: gws, nodes deployed.

        Parameters:
        num_nodes       -- number of nodes to deploy
        Node            -- constructor for node class
        channel_model   -- channel model for radio propagation
        area            -- object of type DiscArea
        kwargs          -- additional params, not used here.
        """
        nodes = []
        area_size = area.get_bounds()
        gw = LoraGW(Location2D(0,0), None, None, None)
        for n_id in range(1,num_nodes+1):  # GW id is 0
            # Select node location; GW is at 0,0
            x = random()*area_size
            alpha = random()*2*pi
            y = x*tan(alpha)
            nodes.append(Node(n_id, Location2D(x, y), None, None, None, None))
        return [gw], nodes