quentinlegot/ntr-interferences
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Move random to improve performances

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This commit is contained in:
Quentin Legot 2023-03-17 11:38:31 +01:00
parent ef7e5f287a
commit 366853dfec
2 changed files with 5 additions and 3 deletions
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3
src/main/java/fr/ntr/AccessPoint.java
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@ -33,6 +33,8 @@ public class AccessPoint {
*/ */
private final double min, max; private final double min, max;
private Random random = new Random();
public AccessPoint(Scheduler scheduler, ResourceBlock[][] frame, List<User> users, int timeSlotNb, int subCarrierNb, double min, double max) { public AccessPoint(Scheduler scheduler, ResourceBlock[][] frame, List<User> users, int timeSlotNb, int subCarrierNb, double min, double max) {
this.min = min; this.min = min;
@ -65,7 +67,6 @@ public class AccessPoint {
private void updateBandwidth(int ticks) { private void updateBandwidth(int ticks) {
int n = 200; int n = 200;
Random random = new Random();
int timeInterval = 50 + random.nextInt(51); int timeInterval = 50 + random.nextInt(51);
for(User user : users) { for(User user : users) {
// On régénère le tableau de débits toutes les 50 ms // On régénère le tableau de débits toutes les 50 ms

5
src/main/java/fr/ntr/User.java
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@ -12,6 +12,8 @@ public class User {
private final List<Packets> packetsSent; private final List<Packets> packetsSent;
private int leftForNextSource; private int leftForNextSource;
private Random random = new Random();
public User(double distance, int timeSlotNb, int subCarrierNb) { public User(double distance, int timeSlotNb, int subCarrierNb) {
this.distance = distance; this.distance = distance;
this.bandwidthTable = new double[timeSlotNb][subCarrierNb]; this.bandwidthTable = new double[timeSlotNb][subCarrierNb];
@ -21,7 +23,7 @@ public class User {
} }
public void generateBandwidth() { public void generateBandwidth() {
double random = Math.random(); double random = this.random.nextDouble();
for(int i = 0; i < bandwidthTable.length; i++) { for(int i = 0; i < bandwidthTable.length; i++) {
for(int j = 0; j < bandwidthTable[i].length; j++) { for(int j = 0; j < bandwidthTable[i].length; j++) {
double h = 1 * Math.sqrt(-2 * Math.log(1 - random)); double h = 1 * Math.sqrt(-2 * Math.log(1 - random));
@ -34,7 +36,6 @@ public class User {
} }
public int createPackets(int m) { public int createPackets(int m) {
Random random = new Random();
int mbis = random.nextInt(2 * m); int mbis = random.nextInt(2 * m);
int nbPacketsToSend = mbis / Packets.packetSize; int nbPacketsToSend = mbis / Packets.packetSize;
this.leftForNextSource = mbis % Packets.packetSize; this.leftForNextSource = mbis % Packets.packetSize;