NR-PBCH Scrambling Scheme for Transmission Number Detection
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Solution Overview
Problem
In the 5G NR-PBCH transmission, user equipment (UE) cannot determine which transmission is being performed due to the uncertainty in the use of single or multiple antennas and beams by the base station, leading to challenges in channel decoding.
Innovation Solution
A method involving predetermined data processing steps, including channel coding, repetition, and scrambling with identifiers, ensures that each data segment corresponds to a specific transmission, allowing the UE to identify the transmission number.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station transmits NR-PBCH multiple times in an 80 ms period using single or multiple antennas and beams, then the transmission reliability is improved, but the UE cannot determine which transmission is being performed, leading to decoding challenges
Solution Approach 1:
The patent applies preliminary action by pre-associating specific scrambling identifiers with specific transmission instances (transmission number, antenna port, beam ID) before the actual transmission occurs. The base station scrambles the PBCH data with a identifier that encodes transmission-specific information in advance, so that when the UE receives the signal, it can directly determine which transmission is being performed without ambiguity. This resolves the contradiction by preparing the identification mechanism beforehand, enabling reliable multi-transmission while maintaining clear transmission identification.
2Adaptability or versatility
If the base station uses multiple antennas and beams for NR-PBCH transmission, then the coverage and robustness are improved, but the complexity of determining antenna port and beam condition at UE increases
Solution Approach 1:
The patent applies universality by designing a unified scrambling identifier that serves multiple functions simultaneously: it identifies the transmission number, indicates the antenna port, and specifies the beam condition. Instead of requiring separate signaling mechanisms for each parameter, a single scrambling identifier performs all these functions. This reduces UE processing complexity while maintaining the flexibility to support multiple antennas and beams, as the UE can extract all necessary information from one identifier rather than processing multiple separate signals.
3Loss of information
If channel coding with different CRC masks is used to represent the number of antenna ports, then the information transmission capability is improved, but the system complexity increases
Solution Approach 1:
The patent applies merging by combining multiple information elements (transmission number, antenna port indicator, beam condition) into a single scrambling identifier. Instead of using separate CRC masks for different purposes, the patent integrates all these functions into one unified scrambling mechanism. This reduces system complexity by eliminating the need for multiple separate identification mechanisms while maintaining full information transmission capability, as all necessary parameters are encoded in the single scrambling identifier that the UE processes uniformly.
Data Source
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AI summary
Provided are a method and apparatus for sending data, a method and apparatus for processing data, as well as a network side device and a terminal. The method for sending data includes: performing first predetermined processing on data to be transmitted to obtain a first processing result; concatenating the first processing result with the data to be transmitted to obtain concatenated data; performing second predetermined processing on the concatenated data to obtain processed data; and transmitting a segment of data in the processed data and corresponding to a current data transmission of a network side device.