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Deep Reinforcement Learning for Joint Spectrum and Power Allocation in Cellular Networks

Authors: Yasar Sinan Nasir and Dongning Guo

Please email me for any questions or comments: snasir [at] u.northwestern [dot] edu

Note: Instructions are for Linux. Please create a virtual environment and install the specified tensorflow and numpy versions:

python3.6 -m pip install --user virtualenv
virtualenv -p python3.6 venv
source $HOME/venv/bin/activate
pip install -r requirements.txt

DEMO:

The repository comes with data to reproduce immediate results, run:

Reproduce Fig. 3.a:

  • python3 -i ./train_results.py --json-file "train_K5_N20_M2_shadow10_episode4-5000_travelIND_fd10"
    * Expected Output: Deployment: train_K5_N20_M2_shadow10_episode4-5000_travelIND_fd10; policy: ddpg200_100_50; K: 20; N: 5
    Averages for last 200 episodes:
    Sum rate per link - proposed: 2.54
    Sum rate per link - joint learning: 2.47
    Sum rate per link - FP: 2.42
    Sum rate per link - FP Multi delayed: 2.22
    Sum rate per link - random: 0.82
    Sum rate per link - full: 0.82
    Average FP iterations per run: 106.99

Reproduce Fig. 3.b:

  • python3 -i ./train_results.py --json-file "train_K5_N20_M4_shadow10_episode4-5000_travelIND_fd10"
    * Expected Output: Deployment: train_K5_N20_M4_shadow10_episode4-5000_travelIND_fd10; policy: ddpg200_100_50; K: 20; N: 5
    Averages for last 200 episodes:
    Sum rate per link - proposed: 4.14
    Sum rate per link - joint learning: 3.96
    Sum rate per link - FP: 3.76
    Sum rate per link - FP Multi delayed: 3.53
    Sum rate per link - random: 1.85
    Sum rate per link - full: 1.85
    Average FP iterations per run: 127.75

Reproducing Table I Row 3: (Trained policy parameters are included as well for further testing)

The repository contains the pre-trained policy parameters in ./simulations/sumrate/policy, so there is no need to run training to reproduce the results. For each row of Table I, you can execute:

  • python3 ./test_results.py --json-file "test_K5_N20_M4_shadow10_episode10-500_travel0_fd10" --json-file-train "train_K5_N20_M4_shadow10_episode4-5000_travelIND_fd10" --json-file-PA-train "ddpg200_100_50" --json-file-CS-train "dqn100_50_50"

  • python3 ./test_results.py --json-file "test_K5_N20_M4_shadow10_episode10-500_travel0_fd10" --json-file-train "train_K5_N20_M4_shadow10_episode4-5000_travelIND_fd10" --json-file-PA-train "dqn200_200_100" --json-file-CS-train "dqn200_200_100"
    Expected Output: Test: test_K5_N20_M4_shadow10_episode10-500_travel0_fd10; train train_K5_N20_M4_shadow10_episode4-5000_travelIND_fd10; policy: ddpg200_100_50
    Sum rate per link for policy after 4 episodes: 4.57, percentage: 1.20
    Sum rate per link - FP: 3.81, percentage: 1.00
    Sum rate per link - FP w delay: 3.57, percentage: 0.94
    Sum rate per link - random: 2.12, percentage: 0.56
    Sum rate per link - full: 2.12, percentage: 0.56
    Average FP iterations per run: 122.15
    Test: test_K5_N20_M4_shadow10_episode10-500_travel0_fd10; train train_K5_N20_M4_shadow10_episode4-5000_travelIND_fd10; policy: dqn200_200_100
    Sum rate per link for policy after 4 episodes: 4.38, percentage: 1.15
    Sum rate per link - FP: 3.81, percentage: 1.00
    Sum rate per link - FP w delay: 3.57, percentage: 0.94
    Sum rate per link - random: 2.12, percentage: 0.56
    Sum rate per link - full: 2.12, percentage: 0.56
    Average FP iterations per run: 122.1

Reproducing Table I Row 7: (Trained policy parameters are included as well for further testing)

The repository contains the pre-trained policy parameters in ./simulations/sumrate/policy, so there is no need to run training to reproduce the results. For each row of Table I, you can execute:

  • python3 ./test_results.py --json-file "test_K10_N50_M5_shadow10_episode10-500_travel0_fd10" --json-file-train "train_K10_N50_M5_shadow10_episode4-5000_travelIND_fd10" --json-file-PA-train "ddpg200_100_50" --json-file-CS-train "dqn100_50_50"

  • python3 ./test_results.py --json-file "test_K10_N50_M5_shadow10_episode10-500_travel0_fd10" --json-file-train "train_K10_N50_M5_shadow10_episode4-5000_travelIND_fd10" --json-file-PA-train "dqn200_200_100" --json-file-CS-train "dqn200_200_100"
    Expected Output: Test: test_K10_N50_M5_shadow10_episode10-500_travel0_fd10; train train_K10_N50_M5_shadow10_episode4-5000_travelIND_fd10; policy: ddpg200_100_50
    Sum rate per link for policy after 4 episodes: 3.79, percentage: 1.19
    Sum rate per link - FP: 3.18, percentage: 1.00
    Sum rate per link - FP w delay: 2.94, percentage: 0.92
    Sum rate per link - random: 1.64, percentage: 0.52
    Sum rate per link - full: 1.64, percentage: 0.52
    Average FP iterations per run: 206.38
    Test: test_K10_N50_M5_shadow10_episode10-500_travel0_fd10; train train_K10_N50_M5_shadow10_episode4-5000_travelIND_fd10; policy: dqn200_200_100
    Sum rate per link for policy after 4 episodes: 3.76, percentage: 1.18
    Sum rate per link - FP: 3.18, percentage: 1.00
    Sum rate per link - FP w delay: 2.94, percentage: 0.92
    Sum rate per link - random: 1.64, percentage: 0.52
    Sum rate per link - full: 1.64, percentage: 0.52
    Average FP iterations per run: 206.38

To train a policy from scratch:

We prepared a bash script file that runs all the python files required to run all simulations from scratch:

./scripts/train.sh

Table I:

It takes several hours to complete the above script, so you can just run test scenarios by using the provided pretrained parameters.

./scripts/testK5N20M1.sh
./scripts/testK5N20M2.sh
./scripts/testK5N20M4.sh
./scripts/testK10N50M1.sh
./scripts/testK10N50M2.sh
./scripts/testK10N50M4.sh
./scripts/testK10N50M5.sh
./scripts/testK10N50M10.sh

Configuration files:

  1. Proposed learning DQN hyper-parameters are in ./config/policy/dqn100_50_50.json.
    Proposed learning DDPG hyper-parameters are in ./config/policy/ddpg200_100_50.json.
    Joint learning DQN hyper-parameters are in ./config/policy/dqn200_200_100.json.

    Note: If you set cuda to True, running python files in parallel as done in the scripts will not work.

    Note: neightresh is unused in the current version.

    Note: Scaling parameters are used to scale the channel gains in dB before feeding them into neural networks.

    Note: We provide a DQN implementation for reference. Its config file has num_actions option in addition to the ones listed above.

  2. Deployment scenarios are in ./config/deployment/. There are two types of configuration files: train and test. Please examine both before using.