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IAccessNetwork.m
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IAccessNetwork.m
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classdef IAccessNetwork < handle
properties (Abstract)
Nodes;
DataCenters;
end
properties (Abstract, Dependent)
NumberNodes;
NumberDataCenters;
end
properties (SetAccess = protected)
base_stations; % node index of base stations
end
properties(Dependent)
NumberBaseStations;
end
%% Public Methods
methods
function this = IAccessNetwork(node_opt)
this.base_stations = [node_opt.bs_index; node_opt.dc_index.Gateway]; % the node should be naturally sorted
this.Nodes.BaseStation = zeros(this.NumberNodes,1);
this.Nodes{this.base_stations, 'BaseStation'} = (1:length(this.base_stations))';
% this.base_stations= table([net.index.NBS'; dc.gateway'], ...
% 'VariableName', {'Node'});
end
end
%% Property Get Methods
methods
function n = get.NumberBaseStations(this)
n = length(this.base_stations);
end
end
methods
function value = readNode(this, name, node_id)
if nargin <= 2
node_id = 1:this.NumberNodes;
end
switch name
case 'BaseStation'
value = this.Topology.Nodes{node_id, 'BaseStation'};
otherwise
value = double.empty();
end
end
end
%% Public Static Methods
methods (Static)
function [node_opt, link_opt] = loadNetworkData(node_opt, link_opt)
% node is indexed by the order: router, GBS NBS.
net = TwoLayerNetwork('SD-RAN');
% [this.index.Router; this.index.GBS]
node_opt.dc_index.Core = [2; 3; 6; 7; 9; 12];
node_opt.dc_index.Gateway = net.index.GBS';
node_opt.bs_index = net.index.NBS';
%% Set link capacity
link_opt.Capacity = zeros(net.Size);
link_opt.Cost = zeros(net.Size);
link_capacity_map = [1000, 1000, 300, 100];
link_cost_map = [1, 2, 4, 6];
link_opt.CostModel = LinkCostOption.NetworkSpecified;
for eid = 1:length(net.link)
link_type = net.link(eid, 3);
if link_type <= 3
link_capacity = link_capacity_map(1+link_type);
link_cost = link_cost_map(1+link_type);
else
link_capacity = 0;
link_cost = inf;
end
link_opt.Capacity(net.link(eid,1),net.link(eid,2)) = link_capacity;
link_opt.Capacity(net.link(eid,2),net.link(eid,1)) = link_capacity;
link_opt.Cost(net.link(eid,1),net.link(eid,2)) = link_cost;
link_opt.Cost(net.link(eid,2),net.link(eid,1)) = link_cost;
end
if isfield(link_opt, 'CapacityFactor') % 'CapacityFactor' used in <CloudNetwork>
warning('CapacityFactor (%.2f) changes the link capacity configuration.',...
link_opt.CapacityFactor);
end
[~, ~, link_opt.Cost] = find(link_opt.Cost);
% if isfield(link_opt, 'CostUnit')
% link_opt.Cost = link_opt.Cost * link_opt.CostUnit;
% end
%% Set node capacity
node_opt.Model = NetworkModel.SDRAN;
node_opt.Location = net.node(:,1:2);
node_opt.Capacity = zeros(net.Size,1);
node_opt.Capacity(node_opt.dc_index.Core) = 5000;
node_opt.Capacity(node_opt.dc_index.Gateway) = 1000;
if isfield(node_opt, 'CapacityFactor')
warning('CapacityFactor (%.2f) changes the node capacity configuration.',...
node_opt.CapacityFactor);
end
node_opt.CapacityModel = NodeCapacityOption.NetworkSpecified;
node_opt.CostModel = NodeCostOption.NetworkSpecified;
node_opt.Cost = inf * ones(net.Size,1);
node_opt.Cost(node_opt.dc_index.Core) = 1;
node_opt.Cost(node_opt.dc_index.Gateway) = 3;
% if isfield(node_opt, 'CostUnit')
% node_opt.Cost = node_opt.Cost * node_opt.CostUnit;
% end
end
end
%% Protected methods
methods (Access = protected)
function slice_opt = preAddingSlice(this, slice_opt)
switch slice_opt.FlowPattern
case FlowPattern.RandomInterBaseStation
if ~slice_opt.DuplicateFlow
slice_opt.NumberFlows = min(slice_opt.NumberFlows, this.NumberBaseStations*(this.NumberBaseStations-1));
end
if isfield(slice_opt, 'NodeSet')
assert(isempty(setdiff(slice_opt.NodeSet, this.base_stations)));
slice_opt.NodeSet = slice_opt.NodeSet;
else
slice_opt.NodeSet = this.base_stations;
end
case FlowPattern.RandomDataCenter2BaseStation
if ~slice_opt.DuplicateFlow
slice_opt.NumberFlows = min(slice_opt.NumberFlows, this.NumberBaseStations*this.NumberDataCenters);
end
if isfield(slice_opt, 'BSNodeSet')
assert(isempty(setdiff(slice_opt.BSNodeSet, this.base_stations)));
else
slice_opt.BSNodeSet = this.base_stations;
end
if isfield(slice_opt, 'DCNodeSet')
assert(isempty(setdiff(slice_opt.DCNodeSet, this.DataCenters.Node)));
else
slice_opt.DCNodeSet = this.DataCenters.Node;
end
otherwise
end
end
function end_points = generateEndPoints(this, slice_opt) %#ok<INUSL>
end_points = zeros(1,2);
switch slice_opt.FlowPattern
case FlowPattern.RandomInterBaseStation
id = unique_randi(length(slice_opt.NodeSet), 2, 'stable');
end_points(:) = slice_opt.NodeSet(id);
case FlowPattern.RandomDataCenter2BaseStation
id = randi(length(slice_opt.DCNodeSet), 1);
end_points(1) = slice_opt.DCNodeSet(id);
bs = slice_opt.BSNodeSet;
bs(bs==end_points(1)) = []; % avoid the same node as BS and DC.
end_points(2) = bs(randi(length(bs),1));
otherwise
end_points = double.empty();
end
end
% [flow_table, phy_adjacent, flag] = generateFlowTable( this, graph, slice_opt )
end
end