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env_CAV_cooperation_20230313.py
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env_CAV_cooperation_20230313.py
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# -*- coding: utf-8 -*-
"""
Created on Tue Jan 17 13:32:12 2023
@author: Kaige
"""
# for 20230131-190919 and 20230201-002841
import os
import matplotlib.pyplot as plt
import numpy as np
import scipy.io as sio
import random
import math
import pandas as pd
import sympy as sp
from gym import spaces
##########################################################################################################################
def cal_delta(a,b,c,d):
p = (3*a*c-b*b)/(3*a*a)
q = (27*a*a*d - 9*a*b*c + 2*b*b*b)/(27*a*a*a)
delta = (q/2)*(q/2)+(p/3)*(p/3)*(p/3)
return delta
##################################################################################
class Network():
def __init__(self):
#########################################################################################################################
self.infeasible_penalty = -10
##################################### DNN model parameters ###############################################################
self.delta_1 = 120268800/30 # computing demnad (in cycles) for feature extraction
self.delta_2 = 1000/30 # computing demnad (in cycles) for feature fusion
self.delta_3 = 9255020/30 # computing demnad (in cycles) for fast inference
self.delta_4 = 2.3000e+09/30 # computing demnad (in cycles) for full inference
self.rho = 0.3; # Average early exit ratio in the default DNN model
self.rho_tilde = 0.6; # Average early exit ratio in the data-fusion DNN model
self.w = 295936; # feature data size (in bit)
self.Delta = 0.1; # Delay requirement in s, i.e., 100ms
##
self.kappa = 1e-28
self.delta = self.delta_1 + self.delta_3 + (1-self.rho) * self.delta_4
self.delta_tilde = 2*self.delta_1 + self.delta_2 + self.delta_3 + (1-self.rho_tilde) * self.delta_4
self.delta_hat = self.delta_1 + self.delta_2 + self.delta_3 + (1-self.rho_tilde) * self.delta_4
##
self.w_new = self.w/1e6*500
self.delta_hat_new = self.delta_hat/1e9*500
self.Delta_new = self.Delta*500
self.varphi = np.sqrt(2*np.power(self.delta,3)/(np.power(self.delta_hat,2)*self.delta_tilde))
############################################### Communication parameters #################################################
self.noise_power = np.power(10, -104/10)/1000 # -104dBm
self.Transmit_power = np.power(10, 23/10)/1000 # 23dBm
self.Interference_constant = 0
self.bandwidth_basis = [7,7,7,6,6,6,5,5,5,4,4,4,3,3,3,2,2,2,2,3,3,3,4,4,4,5,5,5,6,6,6,7,7,7] #*1000000
self.f_center = 6 # Ghz
self.episode_length = 34
############################################### optimal resource allocation ###################################
self.obj_opt_3CAV = np.squeeze(sio.loadmat('KKT_opt/KKT_3CAV_opt_data_all.mat').get('KKT_obj_3CAV_all'))
self.obj_opt_2CAV = np.squeeze(sio.loadmat('KKT_opt/KKT_2CAV_opt_data.mat').get('KKT_obj_2CAV'))
self.obj_opt_1CAV = np.squeeze(sio.loadmat('KKT_opt/KKT_1CAV_opt_data.mat').get('KKT_obj_1CAV'))
# self.obj_opt_3CAV = np.zeros([6,5,5,5,10,10,10])
# self.obj_opt_2CAV = np.zeros([6,5,5,10,10])
# self.obj_opt_1CAV = np.zeros([6,5,10])
############################################### CAV environment ###############################################
self.CAV_pair_num = 3
self.n_agents = self.CAV_pair_num
self.n = self.n_agents
self.n_adversaries = 0
self.action_space = [spaces.Discrete(2) for i in range(self.n)]
# self.observation_space = [spaces.Box(5,) for i in range(self.n)]
self.observation_space = [(5,) for i in range(self.n)] # bandwidth, own workload, own distance, avg workload of others, average distance of others
self.distances = np.arange(6,36,6) # All candidate states for transmitter-receiver distances
# state transition prob. matrix for distance states
# self.trans_matrix = np.array([[0.54, 0.24, 0.12, 0.06, 0.03],
# [0.16, 0.575, 0.16, 0.07, 0.035],
# [0.07, 0.14, 0.58, 0.14, 0.07],
# [0.035, 0.07, 0.16, 0.575, 0.16],
# [0.03, 0.06, 0.12, 0.24, 0.54]])
# self.trans_matrix = np.array([[0.8, 0.2, 0, 0, 0],
# [0.1, 0.8, 0.1, 0, 0],
# [0, 0.1, 0.8, 0.1, 0],
# [0, 0, 0.1, 0.8, 0.1],
# [0, 0, 0, 0.2, 0.8]])
self.trans_matrix = np.array([[0.9, 0.1, 0, 0, 0],
[0.05, 0.9, 0.05, 0, 0],
[0, 0.05, 0.9, 0.05, 0],
[0, 0, 0.05, 0.9, 0.05],
[0, 0, 0, 0.1, 0.9]])
self.workloads = np.array([4,5,6,7,8])
# self.load_trans = np.array([[0.54, 0.24, 0.12, 0.06, 0.03],
# [0.16, 0.575, 0.16, 0.07, 0.035],
# [0.07, 0.14, 0.58, 0.14, 0.07],
# [0.035, 0.07, 0.16, 0.575, 0.16],
# [0.03, 0.06, 0.12, 0.24, 0.54]])
self.load_trans = np.array([[0.9, 0.1, 0, 0, 0],
[0.05, 0.9, 0.05, 0, 0],
[0, 0.05, 0.9, 0.05, 0],
[0, 0, 0.05, 0.9, 0.05],
[0, 0, 0, 0.1, 0.9]])
def reset(self):
self.step_count = 0
####################### Available bandwidth (depending on HDV status) #####################################################
band_basis = self.bandwidth_basis[self.step_count]
if band_basis == 7:
self.Bandwidth_available = np.random.choice([6,7],1, [0.1, 0.9])
elif band_basis == 2:
self.Bandwidth_available = np.random.choice([2,3],1, [0.9, 0.1])
else:
self.Bandwidth_available = np.random.choice([band_basis-1, band_basis, band_basis+1], 1, [0.05, 0.9, 0.05])
Bandwidth_norm = (self.Bandwidth_available - 2)/5
########################### CAV Workload (number of objects for detection) ##################################################################
# Dynmaic workload: number of objects for detection by the DNN model
self.O_vehs_all = np.array([4,6,8])
O_norm = (self.O_vehs_all - np.array([4,4,4]))/4
############################# Distance and channel gain ###############################################
self.Distance_all = np.array([6,18,30])
Distance_norm = (self.Distance_all - np.array([6,6,6]))/24
# Path_loss_dB_all = 32.4 + 20*np.log10(self.Distance_all) + 20*math.log10(self.f_center) # NR-V2X 37.885 highway case, d in meter, f_center in GhZ, Path_loss_dB in dB
# self.Channel_gain_all = 1/np.power(10, Path_loss_dB_all/10)
########################################## State ######################################################
self.curr_state = [0]*self.n_agents
self.pre_action = np.array([1]*self.n_agents)
for i_agent in range(0, self.n_agents):
# self.curr_state[i_agent] = np.r_[self.Bandwidth_available, self.O_vehs_all[i_agent], self.Distance_all[i_agent], (sum(self.O_vehs_all)-self.O_vehs_all[i_agent])/(self.n_agents-1),(sum(self.Distance_all)-self.Distance_all[i_agent])/(self.n_agents-1)]
self.curr_state[i_agent] = np.r_[Bandwidth_norm, O_norm[i_agent], Distance_norm[i_agent], (sum(O_norm)-O_norm[i_agent])/(self.n_agents-1),(sum(Distance_norm)-Distance_norm[i_agent])/(self.n_agents-1)]
# print("self.curr_state:", self.curr_state)
state = self.curr_state
self.step_count = 1
return state
def step(self, curr_action):
#########################################################################################################
actions_array = np.array(curr_action)
# print("actions_array:", actions_array)
actions = np.array([np.argmax(actions_array[0]), np.argmax(actions_array[1]), np.argmax(actions_array[2])])
# print("actions:", actions)
# print("self.pre_action:", self.pre_action)
switch_cost = self.CAV_pair_num - np.count_nonzero(actions == self.pre_action)
# print("switch_cost:", switch_cost)
self.pre_action = actions
################################### Action processing #################################################
# Number of CAV pairs in cooperation mode
Activated_CAV_pair_num = sum(actions)
Activated_index = np.where(actions == 1)
# Activated_index = np.array(Activated_index)[0].tolist()
# print("Activated_index:", Activated_index)
################################### Given state and action ############################################
obj_opt = 0
if Activated_CAV_pair_num > 0:
O_vehs = self.O_vehs_all[Activated_index]
Distance = self.Distance_all[Activated_index]
# print("O_vehs:", O_vehs)
# print("Distance:", Distance)
if Activated_CAV_pair_num > 1:
sort_index = np.array(Distance).argsort()
# print("sort_index:", sort_index)
O_vehs_ordered = O_vehs[sort_index]
Distance_ordered = Distance[sort_index]
# print("O_vehs_ordered:", O_vehs_ordered)
# print("Distance_ordered:", Distance_ordered)
# print(O_vehs_ordered[0]-4)
# print(Distance_ordered[0]/3-1)
if Activated_CAV_pair_num == 3:
obj_opt = self.obj_opt_3CAV[int(self.Bandwidth_available-2), int(O_vehs_ordered[0]-4), int(O_vehs_ordered[1]-4), int(O_vehs_ordered[2]-4), int(Distance_ordered[0]/3-1), int(Distance_ordered[1]/3-1), int(Distance_ordered[2]/3-1)]
elif Activated_CAV_pair_num == 2:
obj_opt = self.obj_opt_2CAV[int(self.Bandwidth_available-2), int(O_vehs_ordered[0]-4), int(O_vehs_ordered[1]-4), int(Distance_ordered[0]/3-1), int(Distance_ordered[1]/3-1)]
elif Activated_CAV_pair_num == 1:
obj_opt = self.obj_opt_1CAV[int(self.Bandwidth_available-2), int(O_vehs[0]-4), int(Distance[0]/3-1)]
# else: #Activated_CAV_pair_num == 0:
# obj_opt = 0
# print("obj_opt:", obj_opt)
# sio.savemat("Results_vs_mu\CAV_num\Results_vs_mu_"+str(CAV_pair_num)+".mat", {"f_1s": f_1s, "mu_hist_array": mu_hist_array, "obj_hist_array": obj_hist_array, "check_sum_hist_array": check_sum_hist_array})
####################################### Calculate the reward ##########################################
reward = 0
if obj_opt == -1:
reward = self.infeasible_penalty
else:
reward = obj_opt - switch_cost/5
# if obj_opt != -1:
# reward = obj_opt - switch_cost/10
####################################### Get the next state ##########################################
####################### Available bandwidth (depending on HDV status) #####################################################
band_basis = self.bandwidth_basis[self.step_count]
if band_basis == 7:
self.Bandwidth_available = np.random.choice([6,7],1, [0.2, 0.8])
elif band_basis == 2:
self.Bandwidth_available = np.random.choice([2,3],1, [0.8, 0.2])
else:
self.Bandwidth_available = np.random.choice([band_basis-1, band_basis, band_basis+1], 1, [0.1, 0.8, 0.1])
Bandwidth_norm = (self.Bandwidth_available - 2)/5
########################### CAV Workload (number of objects for detection) ##################################################################
O_next = np.zeros([self.n_agents])
for i_agent in range(0, self.n_agents):
p_O = self.load_trans[int(self.O_vehs_all[i_agent]-4),:]
O_next[i_agent] = np.random.choice(self.workloads, 1, p_O.any())
self.O_vehs_all = O_next
O_norm = (self.O_vehs_all - np.array([4,4,4]))/4
############################# Distance and channel gain ###############################################
distance_next = np.zeros([self.n_agents])
for i_agent in range(0, self.n_agents):
p = self.trans_matrix[int(self.Distance_all[i_agent]/6-1),:]
distance_next[i_agent] = np.random.choice(self.distances, 1, p.any())
self.Distance_all = distance_next
Distance_norm = (self.Distance_all - np.array([6,6,6]))/24
# print("self.O_vehs_all:", self.O_vehs_all)
# print("self.Distance_all:", self.Distance_all)
##################################### State ###########################################################
state_next = [0]*self.n_agents # This is a list
rew_n = [0]*self.n_agents
done_n = [0]*self.n_agents
obj_n = [0]*self.n_agents
switch_n = [0]*self.n_agents
self.step_count += 1
done = False
if self.step_count == self.episode_length:
done = True
# self.episode += 1
for i_agent in range(0, self.n_agents):
# state_next[i_agent] = np.r_[self.Bandwidth_available, self.O_vehs_all[i_agent], self.Distance_all[i_agent], self.pre_action[i_agent]]
# state_next[i_agent] = np.r_[self.Bandwidth_available, self.O_vehs_all[i_agent], self.Distance_all[i_agent], (sum(self.O_vehs_all)-self.O_vehs_all[i_agent])/(self.n_agents-1),(sum(self.Distance_all)-self.Distance_all[i_agent])/(self.n_agents-1)]
state_next[i_agent] = np.r_[Bandwidth_norm, O_norm[i_agent], Distance_norm[i_agent], (sum(O_norm)-O_norm[i_agent])/(self.n_agents-1),(sum(Distance_norm)-Distance_norm[i_agent])/(self.n_agents-1)]
rew_n[i_agent] = reward
done_n[i_agent] = done
obj_n[i_agent] = obj_opt
switch_n[i_agent] = switch_cost
self.curr_state = state_next # This is a list of one dimensional (4,) np arrays
return state_next, rew_n, done_n, obj_n, switch_n
# ###-------------------------------
# env = Network()
# x = env.reset()
# print("Initial state:", x)
# curr_action = np.random.randint(0,2,env.CAV_pair_num)
# print("actions",curr_action)
# w, y, z = env.step(curr_action)
# print("reward:", y)
# print("state_next:", w)
# print("done:", z)
# curr_action = np.random.randint(0,2,env.CAV_pair_num)
# print("actions",curr_action)
# w, y, z = env.step(curr_action)
# print("reward:", y)
# print("state_next:", w)
# print("done:", z)
# curr_action = np.random.randint(0,2,env.CAV_pair_num)
# print("actions",curr_action)
# w, y, z = env.step(curr_action)
# print("reward:", y)
# print("state_next:", w)
# print("done:", z)
# curr_action = np.random.randint(0,2,env.CAV_pair_num)
# print("actions",curr_action)
# w, y, z = env.step(curr_action)
# print("reward:", y)
# print("state_next:", w)
# print("done:", z)