Control Channel Information Processing via Signaling Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In LTE networks, existing resource muting schemes to mitigate interference between different types of base stations increase resource waste and scheduling delays, and fail to effectively utilize space division technology for control channels, leading to interference and compatibility issues.
Innovation Solution
A method and system that notifies receiving sides through signaling configuration about the time and frequency domain location of control channels, using RRC, SIB, and PDCCH signalings, to enable blind detection and optimize resource allocation, thereby allowing full utilization of space division technology and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If resource muting schemes (ABS or CRS muting) are used to mitigate interference between different types of base stations, then interference is reduced, but resource waste increases and scheduling flexibility is greatly limited
Solution Approach 1:
The control channel resources are segmented into multiple search spaces (common search space and dedicated search space) with different blind detection requirements. This allows different UEs to detect control information in different resource segments, reducing the need for blanket resource muting across the entire cell while still protecting against interference for specific UE groups.
Solution Approach 2:
Different search spaces are assigned different quality characteristics - the common search space uses more robust detection parameters for all UEs, while dedicated search spaces use UE-specific parameters optimized for individual UE requirements. This local optimization reduces overall resource waste compared to uniform muting schemes.
2Object-affected harmful factors
If more ABS configurations are used to handle more Picos, then interference is mitigated, but scheduling delay increases and resource waste worsens
Solution Approach 1:
The system dynamically adjusts the number and configuration of search spaces based on UE-specific conditions and traffic requirements. This dynamic adaptation allows the network to handle multiple Picos without fixed ABS patterns, reducing scheduling delay while maintaining interference mitigation.
Solution Approach 2:
Different search spaces use different detection parameters (aggregation levels, DCI formats, RNTI types) to optimize performance for different UE scenarios. This parameter differentiation allows flexible handling of interference without requiring conservative ABS configurations that increase scheduling delay.
3Reliability
If blind detection is performed for control channels, then control information is received, but detection complexity increases
Solution Approach 1:
The control channel detection is segmented into multiple search spaces with different blind detection requirements. Common search space uses standardized detection for all UEs, while dedicated search spaces use UE-specific parameters. This segmentation reduces overall detection complexity compared to exhaustive blind detection across all possible configurations.
Solution Approach 2:
The network pre-configures search space parameters (locations, sizes, formats) for each UE before control channel transmission. This preliminary configuration allows UEs to perform targeted blind detection only in pre-defined search spaces rather than searching all possible control channel locations, significantly reducing detection complexity.
Data Source
AI summary
The disclosure discloses a method and system for processing control channel information. A receiving side is notified, by a network side via one or more types of the following signaling, of the information required to receive or perform blind detection for a control channel, wherein the signaling part comprises at least: a Radio Resource Control (RRC) signaling, a System Information Block (SIB)x (x=2, 3) signaling, and a Physical Downlink Control Channel (PDCCH) signaling located at the first n (n=1, 2, 3, 4) Orthogonal Frequency-Division Multiplexing (OFDM) symbols. In the control channel information processing technology of the disclosure, the receiving side can be notified, via signaling configuration, of at least the time domain or frequency domain location occupied by the control channel. This scheme allows for full utilization of space division technology, thus reducing the load on a physical downlink control channel, and reducing interference between control channels.