Base Station Symbol Transmit Timing Alignment
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Solution Overview
Problem
In wireless communication systems, the misalignment of transmit and receive timings between base stations and terminals leads to incorrect signal reception, causing communication failures due to time domain misplacement of symbols.
Innovation Solution
The proposed solution involves determining adjusted timings for sending and receiving symbols between base stations and terminals, considering time offsets and distances between entities, to align transmit and receive timings in the time domain, thereby ensuring correct signal reception. This is achieved by reconfiguring the transmit and receive timings using a timing advance offset (NTAoffset) and distance-based adjustments, and utilizing guard intervals to avoid signal conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmit timing is adjusted to align with receive timing in time domain, then signal reception quality is improved, but device complexity increases due to additional timing configuration
Solution Approach 1:
The patent changes the timing parameter by introducing a timing offset (NTA offset) that adjusts the transmit timing of symbols between base stations. This parameter modification allows the transmit timing to be advanced or delayed relative to the receive timing, thereby aligning the time domains and improving signal reception quality without requiring fundamental system redesign
Solution Approach 2:
The patent applies preliminary action by pre-configuring the timing offset before actual symbol transmission begins. The base station determines the NTA offset in advance based on the timing relationship with other base stations, and then uses this pre-determined offset to adjust all subsequent transmit timings, ensuring proper alignment is established before communication occurs
2Reliability
If timing advance offset is applied to align transmit and receive timings, then communication reliability is improved, but time synchronization complexity increases
Solution Approach 1:
The patent introduces a specific parameter called NTA offset that quantifies the timing adjustment needed. By changing the timing parameter in a controlled manner based on this offset value, the system can reliably align transmit and receive timings while managing synchronization complexity through parameterization rather than complex procedural adjustments
3Measurement precision
If guard intervals are inserted to avoid signal conflicts, then signal reception accuracy is improved, but network resource utilization decreases
Solution Approach 1:
The patent applies preliminary action by determining the timing offset in advance before symbol transmission. The base station calculates the NTA offset based on the timing relationship with other base stations and pre-configures the adjusted transmit timing. This advance preparation ensures that symbols are transmitted at the correct time without needing additional guard intervals, thereby maintaining both signal accuracy and resource efficiency
Solution Approach 2:
The patent extracts the timing adjustment function from the signal structure itself by using a separate timing offset parameter. Instead of embedding guard intervals within the signal transmission to handle timing misalignment, the system extracts the timing correction into a preliminary configuration step, allowing the actual data symbols to be transmitted continuously without wasted guard periods
Data Source
AI summary
Embodiments of the present application provide a signal communication method, including: a first base station determines a second timing for sending a first symbol to a terminal and a first timing for sending the first symbol to a second base station, where the first timing is at least determined by the second timing and a time offset between base stations; the first base station sends the first symbol to the second base station by using the first timing.