RAN Initial Transmit Power Determination via Attempt Count
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Solution Overview
Problem
Current radio access networks (RAN) face inefficiencies in determining initial transmit power for forward-link communications with mobile stations, particularly in poor RF conditions, leading to increased network resource usage and failed page attempts.
Innovation Solution
The RAN determines initial transmit power based on the number of attempts required to successfully page a mobile station, using an attempt count and RF Delta to adjust power levels, ensuring efficient communication by accounting for RF conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a constant preset initial transmit power is used for forward-link communications, then device complexity is reduced and ease of operation is improved, but network resource usage increases and communication reliability deteriorates in poor RF conditions
Solution Approach 1:
The patent applies dynamics by transitioning from a static constant preset initial transmit power to a dynamic determination method that adjusts initial transmit power based on RF conditions. The RAN now determines initial transmit power adaptively using page response timing and attempt count information, allowing the system to respond to changing RF conditions rather than using a fixed power level for all scenarios.
Solution Approach 2:
The patent implements parameter changes by modifying how initial transmit power is determined - changing from a constant preset value to a variable value based on RF conditions. The system uses parameters such as page response timing and attempt count to dynamically adjust the initial transmit power parameter, thereby adapting to different RF environments and improving communication reliability.
2Reliability
If multiple iterations are performed to establish satisfactory transmit power, then communication reliability is improved, but network resource usage increases and productivity decreases
Solution Approach 1:
The patent applies preliminary action by determining RF conditions and setting an appropriate initial transmit power before actual forward-link communications begin. By using page response timing and attempt count information to pre-assess RF conditions, the system prepares the optimal transmit power level in advance, reducing the need for multiple iterative adjustments during communication establishment and thereby improving productivity.
Solution Approach 2:
The patent implements feedback by utilizing page response timing and attempt count information as feedback signals about RF conditions. This feedback mechanism allows the RAN to infer the quality of the radio frequency environment and adjust the initial transmit power accordingly, reducing the number of iterations needed to achieve satisfactory communication reliability.
3Reliability
If initial transmit power is increased to compensate for poor RF conditions, then communication reliability is improved, but energy consumption increases
Solution Approach 1:
The patent applies local quality by tailoring the initial transmit power level to the specific RF conditions of each mobile station rather than using a uniform high power level for all. By assessing individual RF conditions through page response timing and attempt count, the system applies the appropriate amount of power locally to each communication channel - increasing power only where necessary and maintaining lower power where conditions are good, thereby optimizing energy consumption.
Data Source
AI summary
Disclosed herein are methods and systems that may help a radio access network to more intelligently determine an initial transmit power to use for forward-link communications with a mobile station. An exemplary method involves a radio access network: (a) receiving a page response message, wherein the page response message indicates that a page to a mobile station operating in a radio access network has been received by the mobile station; (b) responsive to receiving the page response message, determining an attempt count for the mobile station, wherein the attempt count indicates how many attempts to page the mobile station have been made; (c) using the attempt count as a basis for determining an initial transmit power for forward-link communications with the mobile station; and (d) initiating forward-link communications with the mobile station at the determined initial transmit power.