Joint SPS Release Message for Downlink Transmission Coordination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing the release of semi-persistent scheduling (SPS) configurations for downlink transmission occasions, particularly in scenarios where multiple SPS configurations are activated or released jointly.
Innovation Solution
A method and system for wireless communication that enables the joint release of multiple SPS configurations by a user equipment (UE) through a single semi-persistent scheduling (SPS) release message, allowing for coordinated management of SPS physical downlink shared channel (PDSCH) transmission occasions across different numerologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple SPS configurations are released separately, then each configuration can be managed independently, but the signaling overhead and processing complexity increase
Solution Approach 1:
The patent combines multiple separate SPS configuration releases into a single joint release message. The gNodeB transmits one SPS release message that simultaneously releases multiple SPS configurations (first SPS configuration and second SPS configuration) instead of sending separate release messages for each configuration, thereby reducing signaling overhead and processing complexity.
2Device complexity
If SPS configurations are released jointly, then signaling overhead is reduced, but the timing coordination between release and transmission occasions becomes more complex
Solution Approach 1:
The patent applies preliminary action by determining the timing relationship between the SPS release message and the SPS PDSCH transmission occasions in advance. The gNodeB identifies whether the release occurs before, during, or after the transmission occasions and configures the UE accordingly, allowing the UE to properly handle the timing coordination without delays.
Solution Approach 2:
The patent introduces dynamics by allowing flexible timing relationships between the SPS release message and the transmission occasions. The system can adapt to different scenarios where the release message arrives at different times relative to the scheduled transmissions, enabling dynamic adjustment of UE behavior based on actual timing conditions.
3Reliability
If the UE refrains from receiving data transmission upon SPS release, then transmission errors are avoided, but data loss occurs for ongoing transmissions
Solution Approach 1:
The patent segments the SPS configurations into multiple independent configurations that can be released jointly. Each SPS configuration (first and second) schedules specific PDSCH transmission occasions, allowing the system to selectively manage each configuration's transmissions independently while using a unified release mechanism, thus balancing reliability with data loss prevention.
Data Source
AI summary
Some aspects of the present disclosure disclose methods and systems related to separate and joints releases of semi-persistent scheduling (SPS) configured transmission occasions by an SPS release. For example, a user equipment (UE) may receive, from a base station (BS) and via a physical downlink control channel (PDCCH), a semi-persistent scheduling (SPS) release configured to jointly release at the UE a plurality of SPS configurations, each SPS configuration of the plurality of SPS configurations configured to schedule one or more SPS physical downlink shared channel (PDSCH) transmission occasions of a plurality of SPS PDSCH transmission occasions. In some instances, the plurality of SPS PDSCH transmission occasions may occur in a same slot as the SPS release. Further, the UE may not expect to receive, or refrain from receiving, SPS PDSCH via the plurality of SPS PDSCH transmission occasions.