Phase Offset on PSS for Wireless Information Transmission
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently conveying information through Primary Synchronization Signals (PSS) without impacting legacy user equipment, while enabling new user equipment to detect phase offsets for improved channel estimation and information transmission.
Innovation Solution
Implementing a fixed set of beams and phases with a constant phase offset for PSS and Secondary Synchronization Signals (SSS), allowing new user equipment to estimate channels and detect phase offsets without affecting legacy equipment, by using a combination of antenna ports and pre-defining or dynamically communicating these settings within the base station, user equipment, or network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If phase offset is introduced on PSS to convey information, then information transmission capability is improved, but compatibility with legacy user equipment deteriorates
Solution Approach 1:
The patent segments the user equipment into legacy UE and new UE categories, applying different processing methods to each group. Legacy UE uses traditional PSS detection without phase offset consideration, while new UE utilizes the phase offset information for enhanced channel estimation and information decoding, thereby resolving the contradiction between information transmission capability and compatibility.
Solution Approach 2:
The patent introduces downlink reference signals as an intermediary mechanism to convey phase offset information. These reference signals serve as a mediator that enables new UE to detect and utilize phase offset data without interfering with legacy UE operation, thus maintaining backward compatibility while enabling advanced information transmission.
2Measurement precision
If fixed set of beams and phases is used for PSS transmission, then channel estimation accuracy is improved, but system flexibility deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-defining a fixed set of beams and phases for PSS transmission before actual communication occurs. This predetermined configuration enables new UE to accurately estimate channels and detect phase offsets without requiring dynamic adaptation during data transmission, thereby improving measurement precision while maintaining system flexibility through pre-configuration.
Data Source
AI summary
Systems and methodologies are described that facilitate conveying information utilizing a constant phase offset on Primary Synchronization Signal (PSS). In general, the subject innovation can employ a fixed set of beams and phases in which a PSS and a Secondary Synchronization Signal (SSS) can be transmitted with the fixed set of beams and phases. Furthermore, the phase offset for PSS and SSS can be the same such that legacy user equipment is unaffected or aware of such transmissions.