Multiplexing Energy Information With Scheduling Requests
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficiently managing energy information and requests from devices with limited energy storage capabilities, such as passive IoT devices, which require innovative methods to transmit energy information and requests without depleting their limited power resources.
Innovation Solution
The solution involves a method where user equipment (UE) generates and transmits energy information and/or energy request messages multiplexed with a scheduling request (SR) via a communication channel, allowing energy harvesting devices to efficiently communicate their energy status and needs, thereby optimizing power usage and extending their operational life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If energy harvesting devices transmit separate energy information and scheduling requests, then communication reliability is improved, but energy consumption increases
Solution Approach 1:
The patent combines energy information and scheduling request transmissions by multiplexing energy information bits with uplink control information on the same physical channel (PUCCH or PUSCH). This merging approach allows the device to convey both scheduling requests and energy status updates simultaneously, improving communication reliability while reducing the number of separate transmissions and overall energy consumption.
2Productivity
If energy harvesting devices transmit more frequent energy status updates, then network resource management is improved, but device power depletion accelerates
Solution Approach 1:
The patent enables the uplink control information channel to serve multiple functions simultaneously: conveying scheduling requests, buffer status reports, and energy information. This multi-functionality allows the network to efficiently manage resources based on comprehensive device status without requiring separate dedicated channels for each type of information, thereby extending operational duration while maintaining management efficiency.
Solution Approach 2:
The patent introduces energy information as an additional parameter in the uplink control information transmission. By encoding energy status (such as energy buffer level or harvesting rate) alongside traditional control information, the network gains enhanced visibility into device power conditions without requiring separate transmission mechanisms, thus improving resource management while conserving device energy.
3Loss of information
If energy harvesting devices use dedicated channels for energy information transmission, then information accuracy is improved, but device complexity increases
Solution Approach 1:
The patent merges energy information transmission with existing uplink control information channels (PUCCH or PUSCH) rather than creating dedicated separate channels. Energy information is multiplexed with other control data using bit concatenation or field insertion methods, ensuring information accuracy is maintained through structured encoding while avoiding the complexity of implementing and managing entirely separate transmission channels.
Data Source
AI summary
A UE may generate an energy information or energy request message. The energy information or energy request message may be associated with the UE. The UE may transmit, for a first node, the energy information or energy request message multiplexed with an SR via a communication channel. In one or more configurations, the communication channel may be one of a PUCCH or a PSFCH. In one configuration, the first node may be a network entity, and the communication channel may be the PUCCH. In another configuration, the first node may be a second UE, and the communication channel may be the PSFCH. The first node may perform a communication operation or an energy operation associated with the UE based on at least one of the energy information or energy request message or the SR.