Cross-Frame Scheduling for Wireless Throughput
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies due to unused resources in scheduling, particularly in downlink subframes where data messages are not always scheduled, leading to wasted potential for communication.
Innovation Solution
The described techniques implement improved scheduling methods for feedback responses by receiving control and data messages within downlink subframes and determining feedback timings based on these messages. This includes delayed scheduling techniques, modifications to feedback timing indications, and alternating feedback processes between scheduling instances, all supported by downlink control information (DCI).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If downlink subframes are allocated for potential data messages, then resource utilization improves, but scheduling complexity increases due to feedback timing coordination
Solution Approach 1:
The patent segments the feedback timing mechanism by introducing distinct feedback timing indicators for different downlink subframes. Each downlink subframe can have its own feedback timing configuration, allowing independent optimization of resource utilization without requiring complete redesign of the scheduling system. This segmentation enables gradual improvement of resource usage while maintaining manageable scheduling complexity.
Solution Approach 2:
The patent implements dynamic feedback timing adjustment where the feedback timing indicator can be modified based on current system conditions and traffic patterns. This dynamic approach allows the system to adapt resource allocation in real-time, improving overall resource utilization while the flexibility helps manage scheduling complexity through adaptive rather than rigid control mechanisms.
2Productivity
If feedback timing is extended to accommodate more data messages, then throughput improves, but latency increases for individual messages
Solution Approach 1:
The patent changes the feedback timing parameter dynamically based on the number and type of data messages being transmitted. By adjusting the feedback timing indicator according to specific conditions (such as message priority, traffic pattern, and system load), the system can optimize throughput for bulk transmissions while maintaining lower latency for time-sensitive messages, thus resolving the contradiction between overall throughput and individual message latency.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A frame, scheduling instances, scheduling period etc. may include a set of downlink subframes and a set of uplink subframes. At least one control message transmitted in a downlink subframe may schedule a set of data messages in the downlink subframes of the frame. The downlink subframe may also include data messages scheduled by a control message of a previous frame. Further, feedback timings for data messages of the frame may be determined based on the corresponding control messages (e.g., from the current frame and the previous frame). Feedback responses corresponding to the data messages may be transmitted in a bundled manner in the set of uplink subframes. Using this cross-frame scheduling technique, the resources of a frame may be efficiently utilized.