User Equipment Transmit Power Control During Network Tune-Away
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Solution Overview
Problem
User equipment (UE) experiences increased transmit power and reduced throughput due to erroneous network conclusions during tune-away and tune-back procedures between different wireless networks, leading to unnecessary power consumption and inefficient resource allocation.
Innovation Solution
A user equipment with a transceiver and processor configured to adjust transmit power based on network operations, specifically by preventing initial transmit power control (TPC) up commands during tune-away procedures and reducing power when block error rate (BLER) is low and signal-to-interference-plus-noise ratio (SINR) is adequate, ensuring optimal power usage and throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE increases transmit power in response to TPC up commands during tune-away procedures, then the network component can decode signals, but the UE consumes excessive power and experiences reduced throughput
Solution Approach 1:
The UE applies preliminary action by preventing the application of TPC up commands during tune-away procedures before they can cause unnecessary power consumption. The processor identifies tune-away procedures and blocks the power adjustment mechanism during these specific time periods, preventing premature or inappropriate power increases that would not be needed for actual signal decoding.
Solution Approach 2:
The system uses feedback mechanisms where the network component provides TPC commands based on perceived signal quality, but the UE filters these feedback signals during tune-away procedures. The processor monitors the operational state and selectively applies feedback control, blocking TPC commands when tune-away is detected to avoid unnecessary power consumption while maintaining signal decoding capability when needed.
2Reliability
If the UE maintains increased transmit power level after tune-away, then the network component can decode signals, but the limited power supply is overused
Solution Approach 1:
The system applies dynamics by making the power control mechanism adaptive and state-dependent. The processor dynamically adjusts the application of TPC commands based on the current operational state, specifically blocking power adjustments during tune-away procedures while allowing them during normal communication. This dynamic control ensures power is only increased when actually needed for signal decoding, preventing energy waste during transitions.
3Reliability
If the network component transmits TPC up commands during tune-away, then signal decoding is enabled, but erroneous conclusions lead to increased transmit power
Solution Approach 1:
The processor acts as an intermediary between the network component's TPC commands and the actual power adjustment. During tune-away procedures, this intermediary blocks the transmission of TPC up commands to the power adjustment mechanism, preventing erroneous network conclusions from causing unnecessary power increases. The intermediary filters and selectively applies control signals based on operational context.
Data Source
AI summary
A user equipment and a method performed by the user equipment. The user equipment includes a transceiver configured to enable the user equipment to establish a connection with a first network and a second network, the first network configured to provide signals to control a transmit power of the transceiver and a processor configured to control the transmit power of the transceiver. The processor controls the transmit power by determining at least one network operation of the user equipment, the network operation associated with a configuration of the connection with the LTE network, receiving a signal from the LTE network indicating an increase in the transmit power to be used and performing a power operation that adjusts the transmit power of the transceiver less than the increase indicated in the signal.