Broadcast Information Determination via Reference Signal Comparison
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Solution Overview
Problem
In fifth generation wireless access systems, terminal devices face challenges in determining whether broadcast information carried in multiple broadcast channels is the same, which is essential for processing and network access, as existing solutions do not provide a method for comparing broadcast information across multiple directional beams.
Innovation Solution
The method involves using reference signals to determine if broadcast information in multiple broadcast channels is the same by analyzing reference signal sequences, initial values, identities, cyclic shift values, masks, orthogonal cover codes, or virtual identities, allowing the user equipment to simplify processing and improve network access performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple high-gain directional beams are used to send broadcast channels in each sector, then coverage limitation is resolved and broadcast signal strength is improved, but the complexity of determining whether broadcast information is the same across multiple channels increases and power consumption rises
Solution Approach 1:
The patent extracts the comparison task from the terminal device by having the base station pre-indicate whether broadcast information in multiple channels is the same. This removes the complex comparison operation from the terminal, reducing its processing complexity and power consumption while maintaining the ability to handle multiple directional beams for improved coverage.
Solution Approach 2:
The patent introduces an intermediary indication mechanism where the base station provides comparison results to the terminal device. This intermediary approach allows the terminal to benefit from multiple high-gain directional beams without directly performing complex comparisons, thus resolving the contradiction between improved coverage and reduced device complexity.
2Reliability
If multiple broadcast channels are received in each sector, then broadcast information reliability is improved, but terminal device power consumption increases due to the need to process and compare multiple channels
Solution Approach 1:
The patent extracts the power-consuming comparison operation from the terminal device by having the base station provide indication information about whether broadcast information is the same. This allows the terminal to maintain reliable broadcast information reception through multiple channels while avoiding the high power consumption of performing comparisons itself.
Solution Approach 2:
The patent applies preliminary action by having the base station pre-determine and indicate whether broadcast information across multiple channels is identical before the terminal receives the channels. This preliminary indication allows the terminal to efficiently process multiple broadcast channels without performing energy-intensive real-time comparisons.
3Ease of operation
If broadcast information comparison is performed by terminal devices, then network access processing is achieved, but processing time and complexity increase
Solution Approach 1:
The patent extracts the time-consuming comparison function from the terminal device and relocates it to the base station. The base station provides indication information that tells the terminal whether broadcast information is the same, allowing the terminal to quickly make network access decisions without spending time on complex comparisons.
Solution Approach 2:
The patent uses preliminary action by having the base station pre-calculate and indicate the equality of broadcast information before the terminal needs to make access decisions. This eliminates the need for the terminal to perform time-consuming comparisons in real-time, thus reducing processing time while maintaining network access capability.
Data Source
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AI summary
This application discloses a method for determining broadcast information and a device. The method includes: receiving, by user equipment, at least two broadcast channels, where each broadcast channel includes a reference signal and broadcast information; and determining, by the user equipment based on the reference signals of each of the two broadcast channels, whether broadcast information included in the two broadcast channels is the same. According to the method and device in this application, a terminal device may directly determine whether the broadcast information included in the two broadcast channels is the same by using the reference signals.