Wireless Device Network Entry Power Optimization
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Solution Overview
Problem
Wireless communication devices face challenges in efficiently establishing network access due to the need for multiple attempts at different transmit powers to achieve successful communication with wireless access nodes, leading to increased power consumption and potential noise interference.
Innovation Solution
A method and device configuration that operate in two modes: the first mode transmits access requests at a first and second power, awaiting acknowledge and resource assignment messages, while the second mode starts a countdown timer for resource assignment messages only, allowing for retransmissions if not received within the timer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple access requests are transmitted at different transmit powers to ensure successful network access, then the reliability of network entry is improved, but the power consumption increases
Solution Approach 1:
The patent implements dynamic transmit power adjustment by switching between two operational modes. In the first mode, the device transmits at a first power level and monitors for an access request acknowledge within a first countdown timer. If not received, it switches to the second mode with a second power level and a second countdown timer. This dynamic adaptation allows the system to optimize power consumption while maintaining reliable network access by adjusting transmission parameters based on real-time conditions.
Solution Approach 2:
The patent changes key parameters including transmit power level and countdown timer duration based on the operational mode. The system transitions between a first transmit power and a second transmit power, and between a first countdown timer and a second countdown timer. These parameter changes enable the device to balance between power consumption and access reliability, attempting access at lower power first and escalating only when necessary.
2Reliability
If multiple access requests are transmitted to ensure successful communication, then the reliability of network entry is improved, but the noise interference increases
Solution Approach 1:
The patent dynamically controls the number and power of access request transmissions through two distinct modes. The first mode attempts access at a lower power level with a first countdown timer, generating less noise interference. Only if the access request acknowledge is not received does the system transition to the second mode with higher power and a second countdown timer. This dynamic approach minimizes noise interference by limiting high-power transmissions to only when necessary.
Solution Approach 2:
The patent applies partial action by attempting network access first with a limited, lower-power transmission in the first mode. The full-power second mode is activated only partially, specifically when the first attempt fails. This graduated approach reduces overall noise interference compared to always transmitting at maximum power, while still ensuring reliable access when needed.
3Reliability
If the device awaits both access request acknowledge and resource assignment messages with timers, then the reliability of communication establishment is improved, but the complexity of the access process increases
Solution Approach 1:
The patent segments the network access process into two distinct modes with different procedural steps. The first mode involves transmitting an access request, starting a first countdown timer, and awaiting an access request acknowledge. The second mode involves transmitting an access request, starting a second countdown timer, and awaiting a resource assignment message. This segmentation allows the system to manage complexity by handling different scenarios through separate, well-defined procedural paths.
Solution Approach 2:
The patent implements feedback mechanisms through countdown timers that monitor for expected responses. The first countdown timer monitors for an access request acknowledge, and the second countdown timer monitors for a resource assignment message. If the expected message is not received within the timer period, the system receives a control message to switch modes. This feedback-driven approach ensures reliable communication establishment while managing complexity through structured response monitoring.
Data Source
AI summary
What is disclosed is a method of operating a wireless communication device. The method includes, when in a first mode of operation, transmitting an access request to a wireless access node at a first transmit power, starting a first countdown timer, and awaiting an access request acknowledge from the wireless access node. In the first mode of operation, if the access request acknowledge is received within the first countdown timer, the method includes halting the first countdown timer and awaiting a resource assignment message from the wireless access node, and if the access request acknowledge is not received within the first countdown timer, the method includes retransmitting the access request to the wireless access node at a second transmit power and restarting the first countdown timer. The method also includes receiving a control message to enter a second mode of operation from the wireless access node, and when in the second mode of operation, transmitting the access request to the wireless access node, starting a second countdown timer, and awaiting the resource assignment message from the wireless access node. In the second mode of operation, if the resource assignment message is received within the second countdown timer, the method includes halting the second countdown timer, and if the resource assignment message is not received within the second countdown timer, the method includes retransmitting the access request to the wireless access node and restarting the second countdown timer.