Smartphone Cover Codebook Update for mmW Beam Optimization
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Solution Overview
Problem
The placement or change of a cover on User Equipment (UE) affects millimeter wave (mmW) transmission performance, leading to performance degradation due to blind codebook selection, increasing implementation complexity and signaling overhead.
Innovation Solution
A method is provided where the UE detects changes in its cover state and updates its codebook configuration from a preconfigured set, applying a suitable codebook to maintain optimal mmW transmission beam patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If blind codebook selection is used, then the UE can attempt to determine a suitable codebook, but implementation complexity and signaling overhead increase
Solution Approach 1:
The patent pre-configures multiple codebooks in the UE before actual mmW transmission occurs. Each codebook corresponds to a specific cover state (e.g., with cover or without cover). When transmission needs to occur, the UE simply selects the pre-configured codebook matching the current cover state, avoiding the need for blind cycling through codebooks during transmission.
Solution Approach 2:
The patent uses cover state detection as feedback to automatically select the appropriate codebook. The UE detects whether a cover is present and uses this feedback information to switch between pre-configured codebooks, ensuring the correct beam pattern is used without complex blind selection processes.
2Reliability
If blind codebook selection is used, then the UE can determine a suitable codebook, but signaling overhead increases
Solution Approach 1:
The patent pre-configures multiple codebooks in the UE before actual mmW transmission occurs. Each codebook corresponds to a specific cover state (e.g., with cover or without cover). When transmission needs to occur, the UE simply selects the pre-configured codebook matching the current cover state, avoiding the need for blind cycling through codebooks during transmission.
Solution Approach 2:
The patent uses cover state detection as feedback to automatically select the appropriate codebook. The UE detects whether a cover is present and uses this feedback information to switch between pre-configured codebooks, ensuring the correct beam pattern is used without complex blind selection processes.
3Object-affected harmful factors
If a cover is placed on the UE, then protection is provided, but mmW transmission performance degrades
Solution Approach 1:
The patent makes the codebook configuration dynamic by allowing the UE to switch between different codebooks based on the cover state. When a cover is detected, the UE transitions to a different codebook that is optimized for transmission through or around the cover, thereby maintaining performance despite the presence of the protective cover.
Solution Approach 2:
The patent changes the beam pattern parameter by selecting different codebooks corresponding to different cover states. Each codebook defines a specific beam pattern optimized for particular transmission conditions (with or without cover), allowing the system to adapt the physical transmission parameters to compensate for the degrading effect of the cover.
Data Source
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AI summary
Aspects presented herein enable updating the codebook configuration upon the changing of the cover or case of the UE. The apparatus applies a first codebook from a plurality of preconfigured codebooks. The apparatus detects a change of a cover state of the UE, wherein the change alters a transmission beam pattern at the UE. The apparatus applies a second codebook from the plurality of preconfigured codebooks based on the change of the cover state.