Downlink Control Channel Frequency Resource Allocation in TDD Systems
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in transmitting control information, particularly in resource allocation and channel formatting, which affects the overall performance of time division duplex (TDD) mode operations.
Innovation Solution
A method and device for efficiently receiving and processing downlink control channels by determining specific frequency resource sets based on subframe types, using different resource sets for special and non-special subframes, and configuring resource blocks to optimize control channel signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single frequency resource set is used for all subframes, then the system configuration is simple, but control information transmission efficiency is reduced in TDD mode
Solution Approach 1:
The patent divides the frequency resources into multiple frequency resource sets (first frequency resource set and second frequency resource set) based on subframe types. Special subframes use the first frequency resource set while non-special subframes use the second frequency resource set. This segmentation allows optimized resource allocation for different TDD subframe characteristics, improving control information transmission efficiency without requiring a completely new configuration system.
Solution Approach 2:
The patent implements dynamic selection of frequency resource sets based on subframe type. The system dynamically switches between the first frequency resource set (for special subframes with control channel signals) and the second frequency resource set (for non-special subframes), allowing the resource allocation to adapt to changing TDD frame structure requirements while maintaining configuration simplicity through predefined sets.
2Reliability
If frequency resources are allocated without considering subframe type, then resource allocation is simple, but control channel signal transmission is suboptimal in special subframes
Solution Approach 1:
The patent applies different frequency resource set configurations to different subframe types. The first frequency resource set is specifically configured for special subframes where control channel signals are present, while the second frequency resource set is used for non-special subframes. This local optimization ensures that control channel signals in special subframes receive appropriate frequency resource allocation without complicating the overall resource allocation framework.
Data Source
AI summary
The present invention relates to a wireless communication system. In particular, the present invention relates to a method for receiving a downlink control channel in a wireless communication system, and a device therefore, more particularly, to the method and a device therefore, the method comprising the steps of: receiving an upper layer signal including a plurality of frequency resource sets; receiving a subframe carrying a plurality of downlink control channel candidates; and monitoring the plurality of control channel candidates in one specific frequency resource set from the plurality of frequency resource sets, for the downlink control channel, wherein the one specific frequency resource set is determined according to the type or the characteristic of the subframe.