Control Information Processing for Interference Coordination
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Solution Overview
Problem
Current downlink control information in wireless communication systems cannot support interference coordination of reference signals among cells, leading to overlapping resources that affect demodulation performance and spectral efficiency.
Innovation Solution
A control information processing method and device that uses X bits to indicate both a first parameter set for signal transmission and a second parameter set for interference coordination, allowing for correct resource mapping and improved spectral efficiency in Coordinated Multi-point Transmission (COMP) systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current downlink control information format is used, then device complexity is reduced, but interference coordination of reference signals among cells cannot be supported leading to resource overlapping
Solution Approach 1:
The patent merges the indication of first parameter set (for signal transmission) and second parameter set (for interference coordination) into a single jointly coded parameter set. This combination allows the control information to simultaneously convey both transmission parameters and interference coordination parameters without requiring separate indication fields, thereby supporting interference coordination while avoiding additional overhead.
Solution Approach 2:
The downlink control information format is enhanced to serve multiple functions: it not only indicates transmission parameters (first parameter set) but also interference coordination parameters (second parameter set) through joint coding. This multi-functionality allows a single control message to handle both data transmission and interference management tasks.
2Productivity
If reference signals are transmitted without interference coordination, then device complexity is low, but spectral efficiency deteriorates due to overlapping resources
Solution Approach 1:
The patent applies preliminary action by pre-configuring two different parameter sets through high-layer signaling before actual transmission. The first parameter set and second parameter set are defined in advance, allowing the system to quickly switch between different resource mapping configurations based on interference conditions without complex real-time calculations during transmission.
3Adaptability or versatility
If separate indication fields are added for interference coordination parameters, then interference coordination support is improved, but downlink control information overhead increases
Solution Approach 1:
Instead of adding separate indication fields for interference coordination parameters, the patent combines the indication of transmission parameters (first parameter set) and interference coordination parameters (second parameter set) into a single jointly coded parameter set. This merging approach conveys both types of information using the same number of bits, avoiding additional overhead while enhancing adaptability.
Data Source
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AI summary
Provided is a control information processing method and device. The method includes: receiving high-layer configuration signalling, wherein the high-layer configuration signalling is used for determining an indication mode of X bits in a control information format, the indication mode of X bits comprises at least one of the following: all of the X bits being used for indicating a first parameter set of at least one enabled transmission block in control information, and the X bits being used for indicating a first parameter set and a second parameter set of at least one enabled transmission block in the control information, where X is a positive integer greater than or equal to 3; and generating a control information format according to the high-layer configuration signalling. The solution solves the problem in the related art that control information cannot support the processing of interference coordination of reference signals, so as to achieve the effect of being capable of supporting the interference coordination of reference signals among cells on the premise of ensuring the data throughput of the cells to improve the spectral efficiency of the system.