Radio Bearer Mapping for Flexible QoS Data Stream Transmission
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Solution Overview
Problem
The existing LTE system lacks a solution for mapping data flows to RAN-side bearers in a non-one-to-one manner, which is necessary for ensuring quality of service and efficient data transmission in 5G systems, where data flows from the core network to the Radio Access Network (RAN) side require flexible bearer mapping.
Innovation Solution
A method and apparatus where an access network node determines and processes radio bearers based on quality of service parameters passed from the core network control entity, searching for existing bearers that meet the required quality of service or setting up new bearers if necessary, to ensure proper data flow transmission between the core network and User Equipment (UE).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data flows are mapped to radio bearers in a one-to-one manner as in LTE, then configuration is simple and data transmission is straightforward, but it cannot support flexible bearer mapping required for 5G quality of service guarantees
Solution Approach 1:
The patent applies universality by enabling a single radio bearer to serve multiple data flows simultaneously. The access network node maps multiple data flows with the same QoS parameters to the same radio bearer, allowing the bearer to perform multiple functions (transporting different data flows) rather than being dedicated to a single data flow as in LTE's one-to-one mapping.
Solution Approach 2:
The patent merges multiple data flows onto a single radio bearer when they share the same QoS characteristics. This combining approach consolidates resources by allowing one bearer to carry multiple flows, reducing the total number of bearers needed while maintaining QoS guarantees for each flow.
2Productivity
If separate tunnels are set up for each EPS bearer in LTE, then data packet transmission is simple in a one-to-one channel mechanism, but it cannot support multiple data flows sharing the same bearer in 5G
Solution Approach 1:
The patent merges the transport function for multiple data flows into a single radio bearer tunnel. Instead of creating separate tunnels for each EPS bearer as in LTE, the system combines multiple data flows that require the same QoS into one shared tunnel, improving resource utilization and transmission efficiency.
Solution Approach 2:
The radio bearer tunnel is designed to be universal, capable of transporting multiple different data flows simultaneously. This multi-functional tunnel can handle various data flows with identical QoS requirements without needing separate dedicated tunnels for each flow.
3Reliability
If the access network node searches for existing radio bearers meeting QoS requirements, then quality of service is guaranteed, but signaling complexity increases when setting up new bearers
Solution Approach 1:
The patent applies preliminary action by having the access network node proactively search for existing radio bearers that can accommodate new data flows before initiating new bearer setup procedures. This advance checking prevents unnecessary bearer creation and reduces signaling overhead by reusing existing bearers when possible.
Solution Approach 2:
The system implements feedback by continuously monitoring existing bearer QoS characteristics and using this information to determine whether new data flows can be mapped to existing bearers. This feedback mechanism enables intelligent decision-making about bearer allocation, balancing QoS guarantees with signaling efficiency.
Data Source
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AI summary
Disclosed are a processing method and device for a radio bearer for transmitting a data stream. The method comprises: determining a quality of service parameter transferred to an access network node by a control entity of a core network; and performing processing on a radio bearer according to the quality of service parameter so as to transmit a data stream needing to be transmitted between the core network and a UE unit. Processing is performed on the radio bearer at the UE unit according to a requirement of the access network node. The radio bearer is used to transmit the data stream needing to be transmitted between the core network and the UE unit. The invention enables a radio bearer to be established or modified according to the actual quality of service of a data stream. Using the solution provided in the invention can effectively solve a problem of mapping multiple data streams having the same service quality to a radio bearer, reduce complexity of a signaling process, ensure quality of service transmission, and support processing of a special packet.