RFID Pulse Signaling for Multi-Bit Transmission and Wider Coverage
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Solution Overview
Problem
Pulse interval encoding (PIE) in radio-frequency identification (RFID) systems for passive tags has limited coverage and low transmission rates, making it difficult to meet the communication requirements of the next-generation Internet of Things (IoT).
Innovation Solution
A multi-bit information transmission method using high-level and low-level pulses with varying pulse widths and combinations to represent different k-bit information sequences, improving coverage and transmission rate without significantly increasing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If pulse interval encoding (PIE) is used for information transmission, then the implementation complexity is reduced and power consumption is lowered, but the transmission rate and coverage range are limited
Solution Approach 1:
The patent segments the information transmission process into multiple signaling stages. First, signaling parameters (including k value) are transmitted to establish communication rules. Then, actual data is transmitted using pulse width modulation with variable pulse counts. This segmentation allows the system to achieve higher transmission rates while maintaining compatibility with simple passive tag implementations.
Solution Approach 2:
The patent extends the traditional single-bit PIE approach by introducing multiple dimensions: variable pulse widths, variable pulse counts, and multi-bit signaling. Instead of using only pulse interval to represent bits, the system uses combinations of pulse width, pulse count, and position to encode k-bit information sequences, thereby increasing transmission capacity without proportionally increasing complexity.
2Measurement precision
If pulse interval encoding (PIE) is used for information transmission, then the clock precision requirement is reduced, but the coverage range is limited
Solution Approach 1:
The patent changes multiple parameters simultaneously: pulse width, pulse count, and signal position are all used as information carriers. By varying these parameters according to k-bit information sequences, the system achieves higher transmission rates and extended coverage while maintaining tolerance to clock precision variations at the passive tag side.
3Productivity
If multi-bit information transmission is implemented, then the transmission rate is improved, but the power consumption increases
Solution Approach 1:
The patent makes the signaling mechanism universal by designing a flexible framework that can adapt to different k values and information transmission requirements. The same pulse modulation mechanism handles both signaling phase and data phase, and can adjust to different pulse counts and widths based on the information sequence, achieving high transmission rates without proportionally increasing power consumption.
Data Source
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AI summary
Provided are an information sending method, an information receiving method, a transmission node, and a storage medium. The method includes determining the signal length of a signal, where the signal represents a k-bit information sequence, k is an integer greater than or equal to 2, and k is a preset value or a value configured using signaling; determining the signal, where the signal includes a high-level pulse and a low-level pulse, and different pulse combination modes of the signal correspond to different k-bit information sequences; and transmitting the signal carrying the information sequence.