Cooperative Transmission Mode Selection for Cellular Networks
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Solution Overview
Problem
In cellular communication networks, the limited transport link capacity between access nodes hinders effective cooperation, leading to insufficient data transmission and increased co-channel interference, particularly in dense deployments, which reduces network capacity and quality.
Innovation Solution
A method and system that dynamically select mobile stations for cooperative data transmission based on transmission condition modifications, using a control device to identify suitable stations and switch between individual and cooperative transmission modes, optimizing data exchange and resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cooperative data transmission is implemented between multiple access nodes, then signal quality and network capacity are improved, but transport link capacity requirements increase and system complexity increases
Solution Approach 1:
The patent segments the mobile station population into different groups based on their suitability for cooperative transmission. By identifying specific criteria (such as channel conditions, interference levels, and transport link capacity), the system divides UEs into those that benefit from cooperative transmission and those that do not, thereby applying complexity only where necessary and improving overall signal quality for targeted users.
Solution Approach 2:
The patent applies cooperative transmission selectively to specific local conditions rather than uniformly across all users. By evaluating local channel conditions, interference patterns, and transport link capacities at each access node, the system implements cooperative transmission only in locations where it provides measurable signal quality improvement, thus optimizing the reliability-to-complexity ratio.
2Productivity
If cooperative data transmission is implemented between multiple access nodes, then network capacity is improved, but transport link capacity requirements increase
Solution Approach 1:
The patent implements cooperative transmission partially rather than fully across all access nodes and users. By selecting only those mobile stations that meet specific criteria for cooperative transmission benefit, the system achieves network capacity improvement for targeted users without requiring full transport link capacity upgrades across the entire network, thus applying partial action to balance productivity gains with transport resource constraints.
3Reliability
If more mobile stations are served in cooperative mode, then signal quality improvement increases, but computational complexity and information exchange requirements increase
Solution Approach 1:
The patent segments the mobile station population into distinct groups based on their channel conditions, interference environments, and potential benefit from cooperative transmission. By identifying and serving only those UEs that meet specific criteria in cooperative mode, the system improves signal quality for targeted users while limiting computational complexity and information exchange to manageable levels, avoiding the need to process all mobile stations cooperatively.
Data Source
AI summary
A method of data transmission with a first mobile station (UE1) in a cellular communication system is described. The cellular communication system comprises a plurality of access nodes (BS1, BS2, BS3), and a plurality of mobile stations (UE11, UE2′, UE3′) in a coverage area (302) of the plurality of access nodes (BS1, BS2, BS3). The plurality of access nodes (BS1, BS2, BS3) and the plurality of mobile stations are adapted to perform data transmission in a first mode between an individual access node from the plurality of access nodes and the first mobile station (UE1), and in a second mode of cooperative data transmission between at least two of the access nodes from the plurality of access nodes and the first mobile station (UE1). The method comprises the steps of identifying the first mobile station (UE1) from the plurality of mobile stations, determining an indication of a modification of the transmission conditions between the first mode and the second mode for said first mobile station (UE1), selecting the mode of data transmission for the identified mobile station from the first and the second mode based on the indication, and performing the data transmission in the selected mode. A corresponding device and program is also described.