Logical Channel Configuration for Wireless Traffic Steering
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in steering traffic between access links and sidelinks, leading to suboptimal data transmission due to differing characteristics and latency requirements between these links.
Innovation Solution
User equipment (UE) receives a logical channel configuration indicating whether channels are configured for access links, sidelinks, or both, and transmits data based on this configuration, using scheduling requests and uplink grants to allocate resources optimally between access links and sidelinks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traffic steering between access links and sidelinks is not optimized, then data transmission efficiency deteriorates, but implementing optimization increases system complexity
Solution Approach 1:
The patent segments traffic into different logical channels (e.g., broadcast control channels, multicast channels, unicast channels) and assigns each channel type to specific transmission links (access link or sidelink). This segmentation allows efficient traffic steering without requiring complex centralized control for all traffic types, as each channel type has predetermined routing rules.
Solution Approach 2:
The patent establishes predetermined configurations for logical channels before data transmission begins. Each logical channel is pre-configured with routing rules that determine whether it should use access links or sidelinks. This preliminary configuration eliminates the need for real-time complex decision-making during transmission, improving efficiency while maintaining manageable system complexity.
2Loss of time
If traffic steering optimization is implemented, then latency is reduced, but device complexity increases
Solution Approach 1:
The patent applies different quality characteristics to different logical channels based on their specific requirements. For example, time-sensitive control channels are configured with higher priorities and specific routing rules, while data channels have different configurations. This local quality approach allows latency optimization for critical channels without requiring complex processing for all channels, thereby reducing overall UE complexity.
Solution Approach 2:
The patent changes key parameters such as channel priority levels, routing destinations, and transmission link selections based on the type of data being transmitted. By dynamically adjusting these parameters according to logical channel configurations, the system reduces latency for time-sensitive traffic while maintaining simple decision rules that do not significantly increase UE complexity.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for a user equipment (UE) to receive a logical channel configuration indicating whether logical channels at the UE are configured to use an access link, a sidelink, or both. A UE may determine that data is available on one or more logical channels and may transmit a buffer status report and a scheduling request to a base station based on the determination. In response, the base station may transmit an uplink grant to the UE allocating resources for transmitting the available data based on the logical channel configuration. The UE may transmit the available data on the access link, the sidelink, or both, based on the received uplink grant, the logical channels to which the available data applies, and the logical channel configuration.