EPDCCH Rate-Matching for Terminal-Specific Parameter Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, the existing methods for transmitting and receiving control information over Physical Downlink Control Channels prevent efficient parameter setting between base stations and terminals, especially when enhanced channels are used, limiting transfer efficiency.
Innovation Solution
A terminal and base station system that monitors and decodes enhanced Physical Downlink Control Channels using rate-matched reference signals, allowing for individual settings and dynamic resource allocation, enabling efficient parameter setting even when control information is transmitted through both standard and enhanced channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If control information is transmitted through enhanced Physical Downlink Control Channel (EPDCCH), then the number of terminals that one base station can accommodate increases, but transmission and reception parameter setting cannot be shared between base station and terminal, preventing improvement in transfer efficiency
Solution Approach 1:
The patent divides the EPDCCH monitoring into two distinct resource block sets: first EPDCCH-PRB set for common parameters and second EPDCCH-PRB set for terminal-specific parameters. This segmentation allows the base station to transmit different types of control information in organized groups, enabling efficient parameter setting while accommodating multiple terminals.
Solution Approach 2:
The patent introduces an intermediary mechanism where the base station transmits control information through two types of search spaces (common and terminal-specific) that act as intermediaries between the base station and terminals. This allows parameter settings to be efficiently communicated without direct one-to-one signaling for each terminal.
2Productivity
If dynamic resource allocation is implemented for EPDCCH, then transfer efficiency improves, but device complexity increases due to individual settings for each terminal
Solution Approach 1:
The patent merges terminal-specific control information with common control information into a unified EPDCCH structure with two resource block sets. This combining approach allows dynamic resource allocation to be implemented efficiently while reducing the complexity of individual terminal settings through shared resource structures.
Solution Approach 2:
The patent implements dynamic resource allocation by allowing the base station to flexibly assign terminals to different EPDCCH resource block sets based on current system conditions and terminal requirements. This dynamic approach optimizes transfer efficiency while managing device complexity through adaptive rather than static configurations.
Data Source
AI summary
Provided is a terminal communicating with a base station, in which in a case where a physical downlink control channel is monitored in a first physical downlink control channel-physical resource block set, the physical downlink control channel is decoded in such a manner that the physical downlink control channel is rate-matched based on a prescribed reference signal, and in which, in a case where the physical downlink control channel is monitored in a second physical downlink control channel-physical resource block set, the physical downlink control channel is decoded in such a manner that the physical downlink control channel is rate-matched based on a reference signal that is set individually for each terminal.