Positioning Reference Signal Hopping With RF Retuning Gaps
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Solution Overview
Problem
RedCap terminals have limited bandwidth, leading to lower positioning accuracy due to insufficient effective bandwidth, and existing protocols lack effective solutions for RF retuning between hops.
Innovation Solution
Implement a hopping transmission method for positioning reference signals with gap symbols between adjacent symbol groups, ensuring the length of these gaps is greater than the switching time between hops, facilitating RF retuning and improving effective bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If hopping transmission is used to increase effective bandwidth for positioning, then positioning accuracy is improved, but RF switching time between hops cannot be properly accommodated causing transmission errors
Solution Approach 1:
The patent introduces gap symbols between adjacent symbol groups in advance, before the actual hopping transmission occurs. These gap symbols are configured with a duration of at least one symbol, which is sufficient to accommodate RF switching time. This preliminary action ensures that when frequency hopping occurs, the RF circuit has already completed the switching operation, avoiding transmission errors and ensuring reliable positioning reference signal transmission.
2Reliability
If gap symbols are introduced between symbol groups for RF retuning, then switching time is accommodated, but transmission time is increased
Solution Approach 1:
The patent optimizes the parameter of gap symbol duration by setting it to at least one symbol, which is the minimum sufficient duration to accommodate RF switching time. This parameter change ensures that RF switching is completed reliably while minimizing the time loss. The gap symbols are strategically placed between symbol groups, and their duration is precisely controlled to balance switching completion and transmission efficiency.
Data Source
AI summary
This application discloses a method for transmitting a positioning reference signal resource, and a communication device, belonging to the technical field of communications. The method for transmitting the positioning reference signal resource in an embodiment of this application includes: sending or receiving, by a communication device, a positioning reference signal resource, symbols occupied by the positioning reference signal resource within a slot including at least one symbol group, each symbol group including one or more consecutive symbols, where the at least one symbol group is used for hopping transmission of the positioning reference signal resource, there are gap symbols between adjacent symbol groups in a time domain, the gap symbols are not used for transmitting the positioning reference signal resource, and the length of the gap symbols is not less than switching time between hops.