Uplink Grant Bitmap Indication for Wireless Resource Scheduling
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently indicating control information, leading to resource waste, interference, and reduced flexibility in resource scheduling, particularly in diverse application scenarios like Extended Reality (XR) and Vehicle-to-Everything (V2X) communications.
Innovation Solution
A method is introduced where control information is transmitted in uplink grants, with candidates for indication depending on specific condition sets, ensuring non-overlapping time configurations and optimizing resource utilization by indicating whether a target uplink grant is unused, thereby avoiding resource waste and improving scheduling flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If control information is indicated using traditional methods, then protocol consistency is maintained, but resource utilization efficiency deteriorates due to resource waste
Solution Approach 1:
The base station performs preliminary actions by configuring multiple uplink grants in advance and usingbitmap indication to预先 indicate whether each grant is used or not used. This allows the terminal to prepare accordingly, avoiding resource waste while maintaining protocol consistency through standardized indication mechanisms.
Solution Approach 2:
The patent changes the parameter of control information indication by introducing bitmap-based indication instead of traditional methods. This parameter change enables efficient resource utilization by precisely indicating used/unused states of uplink grants, reducing resource waste while maintaining protocol consistency through standardized parameter definitions.
2Device complexity
If control information indication is simplified, then device complexity is reduced, but interference increases due to lack of precise indication
Solution Approach 1:
The patent segments the control information indication into multiple independent bitmap fields, where each bitmap corresponds to a specific uplink grant. This segmentation allows simple processing at each level while providing precise indication to avoid interference, as each grant's usage status can be independently indicated and processed.
Solution Approach 2:
The bitmap serves as an intermediary mechanism between the base station and terminal. It simplifies the indication process by providing a standardized binary format while simultaneously enabling precise control to avoid interference. The intermediary bitmap structure bridges the gap between simplicity and precision requirements.
3Adaptability or versatility
If uplink grants are configured with flexible timing, then scheduling flexibility is improved, but resource waste increases due to overlapping time configurations
Solution Approach 1:
The patent introduces dynamic indication through bitmap-based control information that adapts to different scheduling scenarios. The bitmap can be configured with different lengths and patterns to match various uplink grant configurations, enabling flexible scheduling while avoiding resource waste through precise indication of actually used grants.
Solution Approach 2:
The base station performs preliminary configuration of multiple uplink grants with flexible timing, then uses bitmap indication to预先 mark which grants will be used. This allows the system to maintain scheduling flexibility for diverse scenarios while avoiding resource waste by only allocating resources that are actually indicated as used.
4Reliability
If control information is transmitted in every uplink grant, then reliability is improved, but productivity deteriorates due to increased transmission overhead
Solution Approach 1:
The patent merges multiple control information indications into a single bitmap structure that can be transmitted together. Instead of transmitting separate control information in every uplink grant, the bitmap combines the usage indications for multiple grants into one efficient transmission, maintaining reliability through comprehensive indication while improving productivity by reducing overhead.
Solution Approach 2:
The bitmap structure serves multiple functions simultaneously: it indicates usage status for multiple uplink grants, provides timing information, and enables resource allocation decisions. This multi-functionality maintains reliability by providing comprehensive control information while improving transmission efficiency by consolidating multiple functions into a single transmission mechanism.
Data Source
AI summary
The present application provides a method and device for wireless communications. A communication node receives a first message, the first message is configured with an uplink grant, and any two uplink grants configured by the first message are non-overlapping in time; transmits first control information in a first uplink grant, the first control information indicates whether a target uplink grant is unused, the first uplink grant and the target uplink grant are configured by the first message, the target uplink grant is after the first uplink grant; a candidate for an indication of the first control information for the target uplink grant depends on a first condition set; when the first condition set is met, a candidate for an indication of the first control information for the target uplink grant comprises unused and not unused. The method improves the resource utilization rate and avoids the interference.