Base Station Power Sharing Margin Calculation
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Solution Overview
Problem
Current power sharing methods in multi-standard base stations are too slow, often taking 10-20 seconds, which can lead to poor Quality of Service (QoS) for GSM systems due to sudden changes in power allocation, potentially blocking new GSM users if power is not available.
Innovation Solution
A method and system where a base station estimates the statistical power distribution of transmit power to user equipment during a frame, calculates a margin of power not to be shared with a second radio access, and allocates power accordingly to ensure sufficient power for new users and maintain QoS, with the ability to adapt to cell-specific and traffic variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If power sharing is performed slowly (10-20 seconds), then power reallocation between accesses can be done, but QoS for GSM system deteriorates due to sudden power allocation changes blocking new users
Solution Approach 1:
The base station calculates a margin power value in advance based on statistical power distribution estimation before actual power sharing occurs. This preliminary calculation ensures that sufficient power is reserved for GSM users before power reallocation to other accesses, preventing QoS degradation while enabling faster power sharing.
Solution Approach 2:
The invention changes the parameter of power sharing speed from slow (10-20 seconds) to fast by implementing real-time or near-real-time power allocation based on calculated margin power. This parameter change allows the system to respond quickly to power demands while maintaining GSM QoS through the pre-calculated power margin.
2Reliability
If power is allocated quickly to new users, then QoS is maintained, but power sharing efficiency between accesses decreases
Solution Approach 1:
By pre-calculating the margin power based on statistical power distribution, the system prepares power allocation in advance. This allows quick power assignment to new GSM users without compromising overall power sharing efficiency, as the margin power calculation optimizes the balance between GSM QoS and power available for other accesses.
Solution Approach 2:
The system continuously monitors power usage and recalculates margin power based on current statistical power distribution. This feedback mechanism ensures that power sharing efficiency is maintained by dynamically adjusting the margin power allocation according to actual traffic conditions and power demands of different accesses.
Data Source
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AI summary
A method in a base station for calculating a power relating to a first radio access is provided. The power is to be shared with a second radio access within the base station. The base station communicates with a number of user equipments using the first radio access. When the base station has estimated (401) a statistic power distribution of transmit power to said user equipments during a time interval, it calculates (402) a margin of power not to be shared with the second radio access, based on the estimated statistic power distribution. The base station further calculates (403) a power to be shared with the