RLC-Layer Data Routing for Low-Latency Wireless Networks
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Solution Overview
Problem
Existing wireless communication systems face challenges in adjusting data traffic routing policies in real-time due to high transmission delays and inefficiencies in radio resource utilization, particularly in scenarios involving interconnected stations of different device vendors or multiple stations without a unified scheduler.
Innovation Solution
Implementing a Radio Link Control (RLC) entity that receives target messages from a second network device to quickly determine data routing policies, reducing transmission delays by processing information at the RLC layer and optimizing radio resource utilization through dynamic adjustments based on channel status and buffer management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data routing is performed at the PDCP layer, then unified scheduling can be achieved, but transmission delay increases and real-time adjustment capability is lost
Solution Approach 1:
The patent segments the data routing function from the PDCP layer to the RLC layer, creating a separate control plane for routing decisions. This allows the PDCP layer to focus on unified scheduling while the RLC layer handles real-time routing adjustments, resolving the contradiction between unified scheduling capability and transmission delay.
Solution Approach 2:
The patent introduces an RLC entity as an intermediary between the PDCP layer and the radio interface. This intermediary receives routing instructions from the PDCP layer and executes real-time routing adjustments at the RLC layer, enabling both unified scheduling and low-latency routing decisions.
2Device complexity
If data traffic routing policy adjustment is delayed, then system complexity is reduced, but radio resource utilization deteriorates
Solution Approach 1:
The patent implements dynamic routing policy adjustment at the RLC layer, where routing decisions can be changed in real-time based on channel conditions and traffic patterns. This dynamic capability improves radio resource utilization without significantly increasing system complexity, as the RLC layer already maintains the necessary state information.
3Loss of time
If RLC layer processing is used for routing decisions, then transmission delay is reduced, but processing capability requirements increase
Solution Approach 1:
The patent performs preliminary routing decisions at the PDCP layer, establishing baseline routing policies in advance. The RLC layer then only needs to execute these pre-determined routing decisions and make minor real-time adjustments, reducing the processing burden at the RLC layer while still achieving low transmission delay.
Data Source
AI summary
This application discloses a communication method and a related apparatus, and is applied to the communication field. The method includes: An RLC entity of a first network device receives a target message sent by a second network device, and the RLC entity of the first network device determines, based on the target message, a policy for routing target data to the second network device. Because real-time performance at an RLC layer is high, the target message can be quickly transmitted to the first network device. This reduces a transmission delay. In addition, the target message is processed at a lower layer (the RLC layer) of a protocol stack, and does not need to be transferred to a higher protocol layer (a PDCP layer).