Multiflow Data Transmission Robustness via Selective Bicasting
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Solution Overview
Problem
Conventional multiflow transmission in communication networks may lead to worse performance for short messages over weaker links, particularly at cell edges, and does not provide improved robustness for critical data types like VoIP or RRC control messages.
Innovation Solution
Implementing a mechanism that sets up a multiflow connection with bicasting or dynamic flow switching, using selection criteria such as radio link reliability measures to determine the most suitable path for data transmission, ensuring that critical data is transmitted over the most reliable link.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional multiflow transmission is used to maximize average data rates, then throughput is improved, but robustness deteriorates for critical data types like VoIP or RRC control messages
Solution Approach 1:
The patent applies different transmission qualities to different data types by introducing a robustness indicator that identifies whether data units require high reliability. Critical data types like VoIP or RRC control messages are marked with higher robustness indicators, triggering selective bicasting or replication mechanisms to ensure reliable delivery, while non-critical data can use standard multiflow transmission for maximum throughput.
2Reliability
If bicasting is applied to all data units, then reliability is improved, but network overhead increases
Solution Approach 1:
The patent introduces a robustness indicator that enables selective application of bicasting or replication only to data units requiring high reliability. By evaluating the robustness indicator for each data unit, the system applies redundancy mechanisms only where necessary, avoiding unnecessary duplication of non-critical data and thus reducing network overhead while maintaining reliability for critical communications.
3Productivity
If multiflow transmission is used at cell edges, then data rates are improved, but performance deteriorates for short messages over weaker links
Solution Approach 1:
The patent performs preliminary evaluation of the robustness indicator for each data unit before transmission. This allows the system to pre-determine whether selective bicasting or replication should be applied, enabling critical short messages to be protected in advance by transmitting copies over multiple paths, while non-critical messages use standard multiflow transmission, thus avoiding the performance deterioration associated with weaker links.
Data Source
AI summary
There is provided a mechanism for conducting data transmission from a network management entity of communication network control element to a terminal or UE with improved robustness. After a multiflow connection for data units via at least one network transceiver device and via at least two different paths is set up towards a terminal, selection criteria are applied so as to decide which data units are sent on which transmission path. Specifically, dependent on the applied selection criteria, data units of specific data are selected to be subjected either to bicasting each selected data unit using the at least two paths, or to dynamic flow switching so as to transmit each selected data unit using one of the at least two paths and wherein each selected data unit can be independently chosen to be transmitted over either of the at least two paths.