Multi-TRP SPS Configuration for Flexible 5G Reliability
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Solution Overview
Problem
Current systems for configuring multi-Transmission Reception Point (TRP) reliability schemes in 5G networks are inflexible, particularly when multiple Downlink Semi-Persistent Scheduling (SPS) configurations are active, as they apply the same configuration to all SPS configurations, failing to accommodate different traffic profiles and reliability needs.
Innovation Solution
The proposed solution allows for independent configuration of low latency and reliability schemes for each Downlink SPS configuration, enabling flexible application of different reliability and latency schemes based on indicated Transmission Configuration Indicator (TCI) states, using methods such as spatial multiplexing, frequency multiplexing, slot-based time multiplexing, and mini-slot based time multiplexing, and configuring additional TCI states or resource allocation information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single multi-TRP reliability scheme is configured for all Downlink SPS configurations, then system complexity is reduced and configuration is simplified, but flexibility and adaptability to different traffic profiles are lost
Solution Approach 1:
The patent segments the configuration approach by introducing a higher-layer parameter in each Downlink SPS configuration that independently indicates whether multi-TRP operation is enabled and which reliability scheme to use. This allows each SPS configuration to be independently configured rather than applying a single unified configuration to all SPS configurations, thereby resolving the contradiction between simplified system configuration and flexible traffic-specific adaptation.
2Adaptability or versatility
If multiple Downlink SPS configurations are simultaneously active with different traffic profiles, then service diversity and traffic handling capability are improved, but configuration management complexity increases
Solution Approach 1:
Each Downlink SPS configuration includes self-contained higher-layer parameters that indicate whether multi-TRP operation is enabled and which reliability scheme to apply. This self-service approach allows each SPS configuration to independently carry its own multi-TRP configuration information, eliminating the need for complex external configuration management and allowing simultaneous activation of multiple SPS configurations with different traffic profiles without increasing overall system complexity.
Data Source
AI summary
Systems and methods for multi-Transmission Reception Point (TRP) transmission for downlink Semi-Persistent Scheduling (SPS) are provided. In some embodiments, a method performed by a wireless device for configuring one or more wireless communications settings includes determining multiple wireless communications configurations; and simultaneously activating at least two of the wireless communications configurations such that the at least two of the plurality of wireless communications configurations include configuration of one or more of a low latency and/or reliability scheme and one or more properties related to the low latency and/or reliability scheme. This enables multi-TRP based reliability schemes for the case when multiple downlink SPS configurations can be simultaneously activated. By independently configuring low latency and/or reliability schemes and properties of such schemes to different downlink SPS configurations, different reliability and/or low latency schemes can be flexibly applied to different downlink SPS configurations that may be associated with different traffic profiles.