Network Node Carrier Prioritization for Bandwidth Constraints
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Solution Overview
Problem
Current methods for managing radio resources in wireless networks, particularly in GSM/EDGE systems, face challenges in maximizing the number of carriers received by a mobile station while maintaining low computational complexity, often resulting in sub-optimal performance due to limited bandwidth and increased terminal costs.
Innovation Solution
A method where a network node or mobile station prioritizes and removes carriers with the lowest priority from the assigned list, one by one, until the maximum bandwidth can envelop all remaining carriers, ensuring efficient resource utilization with reduced computational complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple carriers are assigned to a mobile station to increase data rate, then the data transmission capacity is improved, but the terminal bandwidth requirements increase leading to higher terminal costs
Solution Approach 1:
The patent implements dynamic carrier selection where the network node determines which carriers the mobile station should receive based on current bandwidth availability. The system dynamically adjusts the set of assigned carriers rather than requiring the terminal to support all possible carriers simultaneously, resolving the contradiction between data capacity and terminal complexity
Solution Approach 2:
The patent changes the parameter of carrier assignment from static (terminal must support all carriers) to dynamic (network assigns subset of carriers based on terminal bandwidth). By modifying the carrier selection parameter adaptively, the system achieves high data transmission capacity while keeping terminal bandwidth requirements manageable
2Productivity
If a brute force method is used to select optimal carrier combinations, then the number of received carriers is maximized, but the computational complexity increases significantly
Solution Approach 1:
The patent extracts the computational burden of carrier selection from the mobile station and relocates it to the network node. The network node performs the complex optimization of selecting the optimal subset of carriers, while the mobile station simply follows the network's assignment. This extraction resolves the contradiction by maintaining high carrier reception while reducing terminal computational complexity
Solution Approach 2:
The network node acts as an intermediary that resolves the conflict between maximizing carrier reception and minimizing computational complexity. Instead of the mobile station performing complex calculations, the network node intermediates the carrier selection process by determining and signaling the optimal carrier subset to the terminal
Data Source
AI summary
Method in a network node for managing radio resources. The network node is comprised in a wireless radio network. A mobile station is configured to operate in the wireless radio network. The mobile station has a maximum bandwidth for simultaneous receptions, and a first carrier list comprising carriers. The carriers are radio carriers assigned to the mobile station. The maximum bandwidth cannot envelope all the carriers in the first carrier list. The network node removes one or more carriers from the first carrier list. The removing of the one or more carriers is performed, one carrier by one carrier, until the maximum bandwidth can envelope all remaining carriers after the removing. The one or more removed carriers have a lowest priority according to a priority list. The remaining carriers comprise carriers to receive for the mobile station.