Cross-Carrier Periodic Grant Activation for Wireless Scheduling
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing interference and network congestion, particularly as demand for mobile broadband access increases, leading to degraded performance on both downlink and uplink channels.
Innovation Solution
The implementation of a method that enables cross-carrier activation of a periodic grant using a single message, allowing for the scheduling of configured grants (CGs) on multiple carriers, thereby reducing overhead and latency while improving throughput and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate messages are used to activate periodic grants on multiple carriers, then reliability of grant activation is improved, but latency and overhead increase
Solution Approach 1:
The patent combines multiple periodic grant activation messages into a single cross-carrier activation message that simultaneously activates configured grants across multiple component carriers. This merging approach reduces the number of separate messages required, thereby decreasing scheduling latency and overhead while maintaining reliable activation across all carriers through a unified signaling mechanism.
Solution Approach 2:
The cross-carrier activation message serves multiple functions simultaneously: it activates periodic grants on the primary carrier and configured grants on multiple secondary carriers within a single message transmission. This multi-functionality allows the system to achieve comprehensive grant activation across the carrier aggregation scenario without requiring separate dedicated messages for each carrier, thus reducing overall latency.
2Reliability
If multiple separate messages are used to activate periodic grants on multiple carriers, then coverage and reliability are improved, but message overhead increases
Solution Approach 1:
The patent merges multiple activation messages into a single cross-carrier activation message that covers all component carriers simultaneously. This consolidation reduces the total quantity of signaling messages required in the system, thereby decreasing message overhead and freeing up network resources while maintaining comprehensive activation coverage across all carriers through the unified message structure.
3Measurement precision
If traditional per-carrier activation is used, then signaling precision is maintained, but productivity and throughput decrease
Solution Approach 1:
The cross-carrier activation message maintains precise carrier-specific activation control for each component carrier while simultaneously performing activation across multiple carriers. This multi-functional approach preserves the signaling precision needed for accurate grant activation on each carrier while dramatically improving scheduling throughput by eliminating the sequential nature of per-carrier activation and enabling parallel activation across the carrier aggregation group.
Data Source
AI summary
In one aspect, a method of wireless communication includes receiving, by a mobile communication device during a first cycle, a periodic grant via a first carrier of a plurality of carriers, monitoring, by the mobile communication device during a next cycle after the first cycle, for configured grants (CGs) for multiple carriers of the plurality of carriers based on the periodic grant, and receiving, by the mobile communication device during the next cycle after the first cycle, a first transmission in a first CG of the CGs via a second carrier of the plurality of carriers and a second transmission in a second CG of the CGs via a third carrier of the plurality of carriers. Other aspects and features are also claimed and described.