Control Channel Puncturing and Shared Channel Rate-Matching Across RATs
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing control channel puncturing and shared channel rate-matching, particularly when multiple radio access technologies (RATs) share the same radio frequency spectrum, leading to degraded communication reliability and spectral inefficiency.
Innovation Solution
The described techniques involve configuring communication devices with patterns for control channel puncturing and shared channel rate-matching. Specifically, a user equipment (UE) receives indications for patterns to puncture control signals or rate-match shared data signals around resources allocated for reference signals associated with different RATs, enabling more efficient use of communication resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple radio access technologies share the same radio frequency spectrum, then spectral efficiency is improved, but communication reliability deteriorates due to control channel puncturing and rate-matching conflicts
Solution Approach 1:
The patent segments the handling of control channels and shared channels by introducing separate rate-matching patterns for each channel type. Control channels use one set of rate-matching patterns while shared channels use another set, allowing independent optimization and avoiding mutual interference, thus resolving the reliability issue while maintaining spectral efficiency
Solution Approach 2:
The patent applies different rate-matching patterns to different channel types based on their specific requirements. Control channels receive priority handling with dedicated patterns to ensure reliability, while shared channels use separate patterns optimized for data transmission, creating local quality differences that resolve the contradiction
2Quantity of substance
If control signals are punctured around reference signal resources, then spectral efficiency is improved, but control channel reliability deteriorates
Solution Approach 1:
The patent introduces dynamic control over puncturing behavior through configurable rate-matching patterns. The network can dynamically select and indicate appropriate patterns to UEs, allowing flexible adjustment of puncturing behavior based on traffic conditions and reliability requirements, resolving the contradiction between spectral efficiency and control channel reliability
3Quantity of substance
If shared data signals are rate-matched around reference signal resources, then spectral efficiency is improved, but data transmission reliability deteriorates
Solution Approach 1:
The patent changes the parameters of rate-matching by introducing separate rate-matching patterns specifically for shared channels. These patterns differ from control channel patterns and can be independently configured, allowing optimization of data transmission reliability while maintaining spectral efficiency through proper parameter selection
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of a control resource set (CORESET) associated with a first radio access technology (RAT). The UE may receive an indication of a pattern for puncturing a control signal associated with the first RAT around resources allocated for reference signals associated with a second RAT. The UE may communicate the control signal according to the pattern. In some examples, the CORESET may be associated with a transmission configuration indicator (TCI) state and the UE may receive a message scheduling a data signal based on the CORESET. The data signal may be associated with the first RAT. The UE may receive an indication of a pattern for rate-matching the data signal around the resources allocated for reference signals associated with the second RAT. The UE may communicate the data signal according to the pattern.