2. Semi-Persistent Scheduling (SPS):
Enhancing Efficiency and Capacity in
Wireless Communication Systems
• Introduction: Welcome to the presentation on Semi-Persistent
Scheduling (SPS).
•
3. • What is Semi-Persistent Scheduling?Definition: Semi-Persistent
Scheduling (SPS) is a resource allocation technique used in
wireless communication systems.
• It enables efficient transmission of recurring traffic, such as
voice and real-time services.
4. 1.Key Characteristics of SPS:Time Division Duplex (TDD)
Systems: SPS is primarily used in TDD-based wireless
systems.
2.Time Resource Allocation: SPS allocates specific time
resources for recurring traffic.
3.Deterministic Transmission: It provides deterministic
transmission opportunities for specific users or traffic types.
5. 1.Benefits of SPS:Increased Efficiency: SPS optimizes resource
allocation, reducing overhead and improving spectral efficiency.
2.Enhanced Capacity: By dedicating specific resources, SPS
allows for more users and traffic to be served simultaneously.
3.QoS Improvement: SPS ensures reliable and predictable
transmission for real-time services, improving quality of service
(QoS).
6. 1.SPS Operation: A Step-by-Step OverviewUser-Specific
Configuration: Users are assigned SPS parameters and time
resource allocations.
2.Activation Period: SPS is activated during specific time slots for
recurring traffic.
3.Deactivation Period: SPS is deactivated during non-recurring
traffic periods to utilize resources efficiently.
7. • SPS Activation and Deactivation Example:Diagram illustrating
the activation and deactivation periods of SPS for a specific
user or traffic type.
8. • SPS Parameter Configuration:Parameters such as SPS
interval, SPS duration, and SPS offset are configured to
optimize resource allocation for different traffic types.
9. • SPS in LTE (Long-Term Evolution):Discussion on how SPS is
implemented in LTE networks, including details about resource
blocks, subframes, and channel elements.
10. • SPS in 5G Networks:Overview of how SPS is adapted and
improved in 5G networks, including support for new frequency
bands and massive MIMO technology.
11. 1.Use Cases of SPS:Voice over LTE (VoLTE): SPS ensures
reliable voice transmission, maintaining call quality even in
congested network scenarios.
2.Real-time Multimedia Services: SPS supports real-time video
streaming, online gaming, and other latency-sensitive
applications.
12. • SPS Challenges and Solutions:Discussion on challenges faced
during SPS implementation, such as interference and dynamic
traffic patterns, along with proposed solutions.
13. • Research and Future Directions:Ongoing research efforts to
further optimize SPS algorithms, improve inter-system
coordination, and support new technologies like edge
computing and network slicing.
14. • Case Study: SPS Deployment in a Cellular Network:Real-world
example showcasing the deployment and performance
improvements achieved through SPS implementation.
15. • Conclusion:Recap of the key points discussed regarding Semi-
Persistent Scheduling (SPS) and its benefits in wireless
communication systems.
