Wireless Terminal Control Information Grouping for Signaling Overhead Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing and scheduling control information for multiple component carriers or component carrier groups, leading to increased signaling overhead and complexity in decoding control channels, particularly in carrier aggregation environments.
Innovation Solution
A method and apparatus for receiving control information in a wireless communication system, where a terminal configured with multiple component carrier groups processes multi-control information for each group, allowing for efficient resource allocation and bundling of ACK/NACK bits, reducing signaling overhead by using specific resource allocation patterns and indicators for component carriers with varying bandwidths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate control information is transmitted for each component carrier, then scheduling flexibility is improved, but signaling overhead increases
Solution Approach 1:
The patent segments component carriers into groups (first group and second group) and transmits separate control information for each group rather than for each individual carrier. This reduces the total number of control information messages while maintaining scheduling flexibility within each group, resolving the contradiction between scheduling flexibility and signaling overhead.
Solution Approach 2:
The patent merges control information for multiple component carriers into group-level control information. By combining the scheduling control for multiple carriers into a single control message per group, the signaling overhead is reduced while still enabling flexible resource allocation across the aggregated carriers.
2Manufacturing precision
If individual control information is used for each component carrier, then resource allocation precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the large number of component carriers into smaller groups, reducing the complexity of decoding control information while maintaining precise resource allocation within each group. The terminal device only needs to decode control information for groups rather than individually for each carrier, reducing computational complexity.
Solution Approach 2:
The patent applies control information at the group level rather than the individual carrier level, which is a partial action approach. This reduces the amount of control information processing required while still achieving sufficient resource allocation precision for practical purposes, balancing precision requirements with device complexity constraints.
3Productivity
If component carriers are aggregated to increase bandwidth, then data throughput is improved, but control information management complexity increases
Solution Approach 1:
The patent merges multiple component carriers into groups and combines their control information into group-level control messages. This allows the system to aggregate more component carriers to increase throughput while managing control information complexity at the group level rather than individually for each carrier.
Solution Approach 2:
The patent segments the large set of aggregated component carriers into manageable groups, making control information processing more tractable. This segmentation allows the system to scale to more component carriers for higher throughput while keeping the control plane complexity bounded through group-based management.
Data Source
AI summary
Disclosed is a method for receiving, by a terminal which has been assigned multiple component carrier groups, control information in a wireless communication system, the method comprising the steps of: receiving control information for the multiple component carrier groups; and receiving data information via component carriers that belong to the multiple component carrier groups using the received control information, wherein the control information may comprise multiplex control information for each of the multiple component carrier groups, or single control information for the component carriers included in each of the multiple component carrier groups.