A proposed algorithm for scheduling and resource allocation for the downlink of LTE networks

الملخص EN

Long Term Evaluation (LTE) networks can be categorized as a member of the third generation of mobile communication system, and it is capable of supporting real time multimedia and a variety of broadband technologies.

In order to satisfy customers, these technologies must be transmitted with a good level of Quality of Service (QoS).

This can be achieved by fulfilling a number of requirements such as lowest possible packet loss rate and delay.

While from a provider’s perspective, improving the systems performance by efficient and fair spectrum allocation is challenging issue.

As known, these requirements are mainly managed by the scheduler at the transmitter side.

In this research, a novel algorithm of scheduling is proposed and implemented for real time applications in the downlink of LTE networks.

The proposed algorithm reduces the number of packets that has been dropped due to congestion as well as the number of lost packets due to bad channel quality, and thus enhancing the system performance.

It also prioritizes the user with the highest packet loss rate by taking into account the packet loss rate of each user and maintaining the metric of fairness within normal levels as the number of users increases.

Also the system capacity, throughput and modulation order were increased by taking advantage of the Adaptive Modulation and Coding Scheme (AMC).

The proposed algorithm has proven to be more efficient in terms of system performance than similar algorithms