Dynamic Protocol Stack Configuration for Wireless Data Transmission
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Solution Overview
Problem
The existing fixed, modular protocol stack in wireless communication technologies, such as LTE, is not optimized for specific application scenarios like Internet of Vehicles, leading to inefficiencies in transmission efficiency, time delay, processing complexity, cost overhead, and power consumption, particularly when dealing with small data packets and stringent time delay requirements.
Innovation Solution
A method and device that dynamically determine and configure the protocol layer structure and function for uplink/downlink data transmission based on network-side configurations, allowing for flexible use of PDCP, RLC, and MAC layers, and enabling options like header compression, encryption, concatenation, and multiplexing to suit specific terminal requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed modular protocol stack structure is adopted for wireless transmission, then the system achieves generic compatibility across various service data, but excessive overhead occurs for small data packets due to headers added by each protocol layer
Solution Approach 1:
The patent implements dynamic protocol stack adaptation by allowing the terminal to flexibly select and configure protocol layers (PDCP, RLC, MAC) based on data characteristics and service requirements. This enables the system to transition from a fixed modular structure to a dynamic configuration that optimizes overhead for different data types, particularly reducing header overhead for small data packets in IoT applications
Solution Approach 2:
The patent changes the parameter of protocol layer configuration from fixed to variable. The network can configure different protocol stack combinations (e.g., with or without PDCP layer, with or without RLC layer) based on service requirements, and the terminal adapts its protocol processing accordingly. This parameter change enables optimization of header compression and overhead reduction for specific scenarios like small data transmission
2Reliability
If a fixed multi-layer protocol stack is used, then comprehensive protocol functions are available, but transmission time delay increases and cannot meet stringent time delay requirements
Solution Approach 1:
The patent segments the protocol stack into optional layers that can be independently configured. Instead of processing through all layers (PDCP-RLC-MAC) for every transmission, the system can selectively enable only necessary layers based on service requirements. For time-sensitive applications, the protocol stack can be simplified to reduce processing stages and meet stringent time delay requirements while maintaining essential protocol functions
3Productivity
If a fixed protocol stack with multiple layers is implemented, then comprehensive data processing capabilities are achieved, but processing complexity and power consumption increase
Solution Approach 1:
The patent implements dynamic protocol stack adaptation by allowing the terminal to flexibly select and configure protocol layers (PDCP, RLC, MAC) based on data characteristics and service requirements. This enables the system to transition from a fixed modular structure to a dynamic configuration that optimizes overhead for different data types, particularly reducing header overhead for small data packets in IoT applications
Solution Approach 2:
The patent changes the parameter of protocol layer configuration from fixed to variable. The network can configure different protocol stack combinations (e.g., with or without PDCP layer, with or without RLC layer) based on service requirements, and the terminal adapts its protocol processing accordingly. This parameter change enables optimization of header compression and overhead reduction for specific scenarios like small data transmission
Data Source
AI summary
The present disclosure provides a method and a device for data transmission. The method for data transmission includes steps of: determining, by a transmitting end, a protocol layer structure and/or a protocol layer function to be used for uplink/downlink data transmission in accordance with a configuration at a network side, the protocol layer structure and/or protocol layer function configured at the network side being determined in accordance with a transmission requirement of a terminal; and transmitting, by the transmitting end, data in accordance with the determined protocol layer structure and/or protocol layer function.