Mobile Control Channel Alignment for Lower Blind Detection Load
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently configuring control channels due to varying channel conditions and user geometries, leading to increased complexity and overhead in mobile stations, as well as limitations in scheduling flexibility and system throughput.
Innovation Solution
Aligning the size of control channel information of different formats to an equal number of coded control channel information bits, modulation symbols, or Control Channel Elements (CCEs) using varying modulation and coding schemes, allowing for flexible scheduling and reduced blind detection complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If control channels are configured with flexible scheduling to adapt to varying channel conditions and user geometries, then system throughput and scheduling flexibility are improved, but mobile station complexity and blind detection complexity increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting modulation and coding schemes based on channel conditions and user geometries. The base station modifies transmission parameters (modulation order, coding rate) to optimize system throughput while adapting to varying channel states, thereby improving productivity without requiring complex adaptive processing at the mobile station side.
Solution Approach 2:
The patent implements preliminary action through pre-configuring control channel information and pre-scheduling resource allocations. By preparing control channel data structures and scheduling decisions in advance at the base station, the system achieves flexible scheduling and high throughput while reducing the real-time processing burden and complexity at the mobile station during blind detection.
2Adaptability or versatility
If control channel information is transmitted with varying formats to accommodate different scheduling scenarios, then scheduling flexibility is improved, but blind detection complexity in mobile stations increases
Solution Approach 1:
The patent applies universality by designing a unified control channel information structure that can accommodate multiple scheduling scenarios and formats. The base station uses a universal control channel framework that adapts its content and parameters based on scheduling needs, allowing flexible scheduling while maintaining a consistent detection interface at the mobile station, thereby reducing blind detection complexity.
Solution Approach 2:
The patent implements dynamics by enabling the control channel information format to dynamically adapt to different scheduling scenarios. The base station adjusts the control channel content, length, and parameters dynamically based on current scheduling decisions, while the mobile station benefits from predefined detection mechanisms that handle these dynamic variations efficiently, balancing scheduling flexibility with reduced detection complexity.
3Productivity
If control channels are optimized for specific user geometries and channel conditions, then resource utilization is improved, but device complexity and overhead increase
Solution Approach 1:
The patent applies local quality by optimizing control channel transmission parameters specifically for different user geometries and channel conditions. The base station adjusts modulation and coding schemes locally according to each user's channel state and geometry, improving resource utilization and throughput while avoiding the need for complex universal adaptation mechanisms at the mobile station, thereby limiting the increase in device complexity.
Data Source
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AI summary
The invention relates to a method, apparatus and system for configuring control channels in a mobile communication network and a mobile station. In order to suggest another improved scheme for configuring control channels, in particular control channels related to the transmission of user data the invention suggests aligning the size of the control channel information of different formats to an equal number of coded control channel information bits and/or modulation symbols for each control channel. The control channels may comprise scheduling related control information. According to another aspect of the invention, a more flexible solution is proposed that may allow for taking different geometries of mobile stations within a cell into account. Similar to the aspect above, the size of the control channel information is aligned by means of modulation and/or coding, however the control channel information is aligned to one out of a set of numbers of coded control channel information bits and/or modulation symbols for each control channel.