Power Control For Random Access Procedure Selection
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Solution Overview
Problem
In wireless communications, as a device moves further from a base station and transmissions involve more overlapping signals, the device requires increasing power for successful communications, which can exceed its maximum transmission power, leading to difficulties in successful transmissions.
Innovation Solution
The system determines the type of random access (RA) procedure based on power demands and a power threshold, indicating the type of procedure through one or more indicators in messages, corresponding with transmission power levels associated with RA procedure parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission power is increased to maintain communication quality at distance, then communication reliability is improved, but the device exceeds its maximum power capability
Solution Approach 1:
The system dynamically selects between different random access procedure types (one-step and two-step) based on the device's current power capabilities and distance from the base station. The wireless device determines whether to use a first random access procedure or a second random access procedure by evaluating power constraints, allowing adaptive power management that resolves the contradiction between maintaining communication reliability and adhering to maximum power limits.
Solution Approach 2:
The patent changes the parameters of the random access procedure by introducing different procedure types with distinct power requirements. The system modifies the access procedure parameters (one-step versus two-step) to match the device's power capabilities, enabling successful communications at extended distances without exceeding maximum transmission power by selecting appropriate procedure parameters.
2Productivity
If more overlapping signals are transmitted to increase data rate, then productivity is improved, but transmission power requirements increase
Solution Approach 1:
The system dynamically adapts the random access procedure type based on power constraints and channel conditions. When power limits are approached, the device can switch between procedure types to maintain productivity while adhering to power constraints, preventing the need to transmit overlapping signals at excessive power levels.
Data Source
AI summary
Systems, apparatuses, and methods are described for wireless communications. Random access procedures may include various steps, such as 4-steps or 2-steps. One or more indicators such as, for example, transmission power requirements, may be used to indicate which random access procedure to utilize.