Communication Sensing Apparatus Time-Division Multiplexing
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Solution Overview
Problem
Current communication standards face challenges in simultaneously transmitting data and sensing the environment using high carrier frequencies, as they require dedicated frequencies and methods for sensing, which can limit communication throughput and accuracy in detecting range and velocity of objects.
Innovation Solution
An apparatus and method that integrate time-division-multiple-access (TDMA) to generate data frames with both communication and sense symbols, where sense symbols are embedded within data frames, allowing for simultaneous communication and environmental sensing without a dedicated carrier frequency, using a processor to manage the transmission of data and sense symbols across predetermined carrier frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dedicated carrier frequencies are used for sensing, then sensing accuracy is improved, but communication throughput is reduced
Solution Approach 1:
The patent combines communication and sensing functions into a single carrier frequency by multiplexing data symbols and sense symbols in the time domain. The transmitter transmits both communication data and sensing signals using the same carrier frequency, eliminating the need for separate dedicated frequencies for sensing while maintaining both communication throughput and sensing accuracy.
Solution Approach 2:
The patent segments the transmission time into different slots: communication slots for data transmission and sense slots for environmental sensing. This temporal segmentation allows the system to perform both communication and sensing functions simultaneously on the same carrier frequency, resolving the contradiction between sensing accuracy and communication throughput.
2Device complexity
If time-division-multiple-access is used to integrate communication and sensing, then device complexity is reduced, but measurement precision may be compromised
Solution Approach 1:
The patent implements periodic transmission of sense symbols at regular intervals within the data frame structure. This periodic action ensures that the receiver can consistently detect and process sensing information for range and velocity measurements while maintaining a simplified integrated architecture. The sense symbols are transmitted at predetermined positions in the time domain, enabling accurate measurements without complex system configurations.
Data Source
AI summary
An apparatus configured to control a transmitter to provide for generation of a data frame, the data frame having a fixed length and fixed predetermined number of sub-frames, and each sub-frame comprises a predetermined number of slots based on a carrier frequencies, and each slot includes a fixed number of symbol time periods; receive a data stream for transmission; define at least one communication-slot for transmitting of data-symbols that represent said data stream and at least one sense-slot for transmitting a predetermined sense-symbol for use in sensing an environment; wherein the generation of the data frame further comprises: the generation of the data-symbols, in the respective symbol time periods of the at least one communication-slot, according to a predetermined encoding protocol, and the generation of the predetermined sense-symbol in at least one symbol time period of the respective at least one sense-slot.