Radio Link Service Profile for Dynamic IP Flow Configuration
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Solution Overview
Problem
The conventional radio bearer configuration in UTRAN/GERAN systems is inefficient for dynamic setup and reconfiguration, leading to delays and inflexibility in managing wireless IP traffic, which is expected to increase in dominance.
Innovation Solution
The introduction of a Radio Link Service Profile (RLSP) that includes quality and transport parameters, allowing for the configuration of temporary IP packet flows over wireless logical channels, eliminating the need for conventional bearers and enabling low-latency, flexible management of IP traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional radio bearer configuration is used, then quality of service parameters can be negotiated, but set-up delay increases and dynamic reconfiguration becomes difficult
Solution Approach 1:
The patent applies preliminary action by pre-configuring radio bearers with default quality of service parameters before actual data transmission begins. The RNC pre-establishes multiple bearers with different QoS profiles, so when IP traffic arrives, the appropriate pre-configured bearer can be immediately activated without negotiation delays. This resolves the contradiction by preparing QoS parameters in advance while enabling rapid deployment when needed.
Solution Approach 2:
The patent implements dynamics by enabling rapid switching between pre-configured bearers based on real-time traffic requirements. The system can dynamically select and activate appropriate bearers without full reconfiguration, allowing QoS parameters to adapt to changing IP traffic demands. This dynamic capability reduces set-up delay while maintaining reliable QoS through the use of pre-established bearer profiles.
2Reliability
If hierarchical bearer structure is implemented, then comprehensive quality of service control is achieved, but system complexity increases
Solution Approach 1:
The patent extracts the QoS negotiation and configuration complexity from the real-time data path by separating control plane signaling from user plane data transmission. The RNC handles all complex bearer configuration and QoS parameter negotiation in advance through control signaling, while the data path simply activates pre-configured bearers. This extraction reduces system complexity in the data path while maintaining comprehensive QoS control through the control plane.
Solution Approach 2:
The patent segments the bearer structure into distinct functional layers: control plane for QoS negotiation and user plane for data transmission. By separating these functions, the complex QoS control mechanisms are isolated to the control plane where they can be managed systematically, while the user plane benefits from simplified, pre-configured bearer activation. This segmentation reduces overall system complexity while preserving comprehensive QoS control capabilities.
3Reliability
If radio bearer negotiation is performed, then transport quality parameters are established, but signaling load increases
Solution Approach 1:
The patent applies preliminary action by establishing QoS parameters and bearer configurations in advance through control plane signaling before actual data transmission. Once bearers are pre-configured with their QoS parameters, subsequent data transmission reuses these established parameters without requiring additional negotiation signaling. This preliminary configuration reduces signaling load during active data transmission while maintaining reliable transport quality through the pre-established bearers.
Solution Approach 2:
The patent uses copying by creating template bearers with standardized QoS parameter sets that can be replicated and activated multiple times. Instead of negotiating unique QoS parameters for each data flow, the system copies from pre-defined bearer templates, significantly reducing signaling load. The copied bearers inherit the transport quality parameters from the template, ensuring consistent quality without repeated negotiation overhead.
Data Source
Figure 1A
Figure 1B
Figure 2a
AI summary
A radio link service profile is defined as a set of parameters for upper layer transport of an IP packet, and may be associated with a logical channel flow identifier. A data packet is sent over a wireless logical channel that is identified by the LCID between a base station and a user equipment. The association of RLSP, whether created or invoked form a memory, is coordinated among the BS and the UE without the need to involve the radio network controller, and if the RLSP does not have a diffserv field on the uplink, the BS adds it prior to forwarding the data packet. A method, device (both BS and UE), computer program product, and system are described in multiple embodiments.