## 4 Performance Evaluation
### Simulation Results
Additionally, the availability of more resource blocks results in less competition for shared resources among UEs, which boosts packet reception ratio even more. Our inspection of three curves in Figure 4a reveals a clear trend: the PRR steadily increases as packet generation time increases. Packets are generated less often, with a 100 ms packet generation time. The chance of packet collisions and loss can be minimized  
Figure 3: Probability of collision based on the speed of UEs. (**a**) Unlimited RBs; (**b**) 1 RB. by the lower frequency of packet creation by reducing network congestion. As a result, a higher packet reception rate could be achieved by successfully receiving a higher percentage of transmitted packets. When packet generation time is 60 ms, packets are created more frequently than every 100 ms but less frequently than every 20 ms. A moderate amount of network congestion is caused by the medium frequency of packet creation. The probability of packet collisions may be higher than at 100 ms, which may result in more packets being lost and a consequent relative decline in the packet reception rate. For a 20 ms packet generation time, packets are generated very frequently. The high frequency of packet generation can lead to significant network congestion and increased likelihood of collisions and interference. The congested network environment can cause a substantial number of packet losses, potentially resulting in a considerably lower packet reception rate. The possibility of signal deterioration during transmission increases with longer generation times, as does competition for shared resources and compromise to outside interference. The observed drop in the PRR is a result of these combined effects. In Figure 4b, when we limit the investigation to just one resource block, an intriguing pattern in the PRR becomes apparent. Initially, as the UEs are in close proximity due to the single resource block, the PRR indeed increases. There is a greater chance that a  
Figure 4: Packet Reception Rate (%) based on the distances between two UEs. (**a**) Unlimited RBs; (**b**) 1 RB. packet will be successfully received because the close proximity guarantees a strong and dependable signal. In this case, the signal's potency and dependability are crucial. When UEs are close to one another, the broadcast signal experiences less route loss, less dispersion and fewer obstructions. As a result, the receiver is better able to identify and accurately interpret the received signal, boosting the PRR. By lowering the chance of interference and collisions, the tight proximity effectively maximizes the utility of the single accessible resource block. However, in Figure 3(b), as the distance between the UEs continues to increase, this beneficial trend begins to reverse. The extended distance introduces increased path loss and potential interference, consequently diminishing the signal received at the destination. Beyond a certain distance threshold, in this case around 200-250 m, the UEs fall out of the effective range of the single resource block, leading to a sharp decline in the PRR. The prolonged distance causes the transmitted signal to experience higher attenuation, reduced strength and increased susceptibility to noise and interference, making successful packet reception increasingly improbable. When UEs are limited to a single resource block, the relationship between their distance and the PRR is essentially characterized by an initial increase brought on by ideal signal conditions, followed by a decrease as the distance increases past the resource block's practical range as well as a gradual decrease in the quality of the received signal. Figure 5 show that the highest PRR is obtained while using four resource blocks, exceeding the PRR values obtained when using three, two and one resource block(s) consecutively. Figure 5: _Cont._  
The fundamental characteristics of resource allocation systems and the reduction of collision risks can be used to explain this observed trend.