Capability-Based OFDM Modulation for Passive IoT Uplink Sharing
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently communicating with passive IoT devices using passive communication technologies, leading to increased latency and resource consumption.
Innovation Solution
Implementing capability-based modulation techniques where a helper UE determines the processing capabilities of a reader UE and encodes OFDM symbols with specific data sets, allowing for efficient communication through a single message transmission via a UE-to-network air interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If separate communication messages are transmitted to the network entity and the reader UE, then data completeness is ensured, but latency increases and resource consumption increases
Solution Approach 1:
The patent combines data for the network entity and data for the reader UE into a single communication message transmitted over the air interface. The helper UE encodes both datasets into one transmission, which is then modulated and sent simultaneously to both destinations, eliminating the need for separate message transmissions and reducing overall latency.
Solution Approach 2:
The communication message is designed to serve multiple functions simultaneously: it acts as an uplink transmission to the network entity while also containing modulated data that the reader UE can decode. This multi-functional approach allows a single transmission to fulfill multiple communication purposes, improving resource utilization and reducing latency.
2Productivity
If capability-based modulation is implemented, then communication efficiency improves, but device complexity increases
Solution Approach 1:
The helper UE determines the processing capabilities of the reader UE and adjusts modulation parameters accordingly. By changing modulation parameters based on detected capability levels, the system optimizes communication efficiency for each device while managing complexity through adaptive rather than universal complex processing.
Solution Approach 2:
The helper UE acts as an intermediary that performs the complex modulation processing on behalf of the reader UE. The helper UE encodes and modulates the data according to the reader UE's capabilities, thereby reducing the processing burden on the reader UE while maintaining communication efficiency.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may receive, from a second UE, a capability message indicating that the second UE is capable of processing one or more types of modulated waveforms. The first UE may encode a set of orthogonal frequency division multiplexing (OFDM) symbols with a first set of data for an uplink transmission to a network entity via a communication link between the first UE and the network entity, and may modulate the set of encoded OFDM symbols with a second set of data for the second UE according to a type of the one or more types of modulated waveforms capable of being processed by the second UE. The first UE may transmit and the second UE may monitor for the modulated set of encoded OFDM symbols via the communication link.