Semi-Persistent Scheduling Control for Mixed Grant Packet Transmission
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in managing packet transmission for periodic applications, particularly in combining dynamic grants and semi-persistent scheduling to optimize resource allocation.
Innovation Solution
A method and apparatus for wireless communication that combines dynamic grants and configured grants with semi-persistent scheduling occasions to manage packet transmission during periodic applications, utilizing processors and memory to execute instructions for efficient resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If semi-persistent scheduling is used for periodic applications, then resource allocation efficiency is improved, but flexibility in adapting to dynamic traffic conditions deteriorates
Solution Approach 1:
The patent implements dynamic activation and deactivation of semi-persistent scheduling occasions through MAC CE signaling. The network can dynamically enable or disable specific SPS occasions based on real-time traffic conditions, allowing the system to adapt between static resource allocation and dynamic scheduling as needed, thus resolving the contradiction between resource efficiency and flexibility.
Solution Approach 2:
The patent changes the state parameter of SPS occasions from static to dynamic by introducing activation/deactivation commands. This allows the system to switch between different operational modes (active SPS for efficiency, deactivated SPS for dynamic scheduling) based on traffic requirements, balancing resource allocation efficiency with adaptability.
2Loss of energy
If multiple packets are transmitted in a combination of dynamic grant and SPS occasion, then spectral efficiency is improved, but complexity of managing scheduling resources increases
Solution Approach 1:
The patent segments the transmission of multiple packets across different SPS occasions within a single dynamic grant. Instead of managing all packets uniformly, the system divides them into separate SPS occasion transmissions, each with its own resource allocation parameters. This segmentation simplifies the management complexity while maintaining overall spectral efficiency through the combination approach.
3Adaptability or versatility
If semi-persistent scheduling is activated and deactivated dynamically, then adaptability to traffic conditions is improved, but signaling overhead increases
Solution Approach 1:
The patent uses MAC CE (Medium Access Control Control Element) signaling for activation and deactivation of SPS occasions. MAC CE operates at the data link layer and leverages existing frame structures and protocols, allowing the system to self-manage SPS state transitions using standardized communication mechanisms rather than requiring custom high-overhead signaling procedures.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a first packet and a second packet for transmission during a period for a periodic application. The UE may transmit the first packet and the second packet in a combination of a dynamic grant and a configured grant occasion. In some aspects, a network entity may receive a first packet and a second packet for transmission. The network entity may transmit the first packet and the second packet in a combination of a dynamic grant and a semi-persistent scheduling occasion. Numerous other aspects are described.