Terminal Device System Information Demodulation
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Solution Overview
Problem
In wireless communications, especially with the emergence of smart terminals and video services, current spectrum resources face challenges in meeting user demand due to high propagation loss in high frequency bands like millimeter-wave, leading to unsatisfactory demodulation performance and repeated demodulation in terminal devices.
Innovation Solution
A method where a terminal device receives indication information from a network device to identify duplicate system information, allowing it to process only unique system information, thereby avoiding repeated demodulation and improving demodulation performance through combined demodulation of identical system information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming technology is used to transmit common channel or common reference signal in high frequency band, then antenna gain is increased to compensate for propagation loss, but terminal device performs repeated demodulation of multiple system information pieces resulting in unnecessary power consumption and unsatisfactory demodulation performance
Solution Approach 1:
The network device performs preliminary action by adding indication information to system information blocks before transmission. This indication information预先 marks which system information blocks contain identical content, allowing terminal devices to perform preliminary judgment and avoid redundant demodulation operations, thus reducing power consumption while maintaining demodulation performance
Solution Approach 2:
The terminal device discards redundant demodulation operations for system information blocks with identical content by using the indication information. Instead of processing multiple copies of the same information, the terminal device selectively processes only unique system information blocks, recovering unnecessary power consumption and processing resources
2Reliability
If terminal device separately demodulates multiple pieces of system information to overcome propagation loss, then system information reception is ensured, but demodulation time increases and processing efficiency decreases
Solution Approach 1:
The network device performs preliminary marking by including indication information in system information blocks that identifies which blocks have identical content. This allows terminal devices to perform quick preliminary identification and skip redundant demodulation, significantly reducing demodulation time while ensuring reliable reception of all necessary system information
Solution Approach 2:
The invention changes the parameter of system information block identification by introducing indication information that modifies how terminal devices recognize and process system information blocks. Instead of treating all blocks as unique, the indication information parameter enables terminal devices to identify duplicate content and adjust processing accordingly, reducing demodulation time
Data Source
AI summary
Embodiments of this application provide an information transmission method, a terminal device, and a network device. The method includes: receiving, by the terminal device, indication information sent by the network device, where the indication information includes information used to indicate content of M pieces of system information; receiving, by the terminal device, the M pieces of system information sent by the network device; determining, by the terminal device, at least two pieces of system information with same content in the M pieces of system information based on the indication information.