Wireless Encoder Packets for QoS-Driven Power Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems waste transmitter resources by setting transmit power based on the most stringent Quality of Service (QoS) requirements for multiple application flows, leading to excessive power expenditure for flows with less stringent requirements.
Innovation Solution
Mapping bits from multiple application flows to distinct encoder packets (EPs) and transmitting them concurrently over orthogonal sub-bands, with each EP's characteristics, including modulation scheme and power, set based on its specific QoS requirements and air-interface channel conditions, allowing for efficient use of bandwidth and power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmit power is set based on the most stringent QoS requirements for multiple application flows, then all flows can meet their QoS requirements, but transmitter resources are wasted on flows with less stringent requirements
Solution Approach 1:
The patent segments multiple application flows into separate encoder packets, allowing each packet to be transmitted with power levels tailored to its specific QoS requirements rather than using a uniform high power level for all flows. This segmentation enables differentiated resource allocation where critical flows receive higher power while less critical flows use lower power, resolving the contradiction between meeting all QoS requirements and minimizing energy waste.
Solution Approach 2:
The patent applies local quality by assigning different transmit power levels to different encoder packets based on their individual QoS requirements. Each packet's transmission parameters are optimized locally according to its specific needs rather than applying a global high-power setting to all packets. This allows the system to meet the stringent QoS requirements of critical flows while using minimal power for less critical flows, thereby eliminating resource waste.
2Device complexity
If multiple application flows are transmitted using the same encoder packet, then resource allocation is simplified, but the ability to optimize each flow's QoS requirements is reduced
Solution Approach 1:
The patent segments multiple application flows into separate encoder packets, with each packet carrying bits from a specific flow. This segmentation enables the system to maintain simple resource allocation procedures while simultaneously optimizing each flow's QoS requirements independently. The segmentation allows differentiated treatment of different flows without requiring complex multi-parameter optimization for each individual flow.
Solution Approach 2:
The patent creates a universal resource allocation mechanism that handles multiple application flows through a common transmission framework. Each encoder packet follows the same transmission protocol and resource allocation rules, providing simplicity, while the system's ability to assign different power levels and modulation schemes to different packets provides adaptability to various QoS requirements. This multi-functionality allows the same system to serve diverse flow types effectively.
Data Source
Figure 1
Figure 2
AI summary
A method is provided for communicating data belonging to at least one application flow (AF). In one aspect, the method involves mapping the data to payload bits of two or more encoder packets (EPs) such that each said EP carries a payload dedicated to only one AF, and transmitting the EPs concurrently. In a second aspect, the above said mapping is inverted at a receiver.