Multi-Hop QoS Maintenance via Relay Link Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing LTE system struggles to maintain quality of service (QoS) parameters in multi-hop networks due to increased delay and varying impacts on time division duplex (TDD) and frequency division duplex (FDD) systems, as the existing QoS maintenance mechanism is not sufficient for distributed scheduling in multi-hop scenarios.
Innovation Solution
A method and system for determining and maintaining QoS parameters in multi-hop networks by acquiring statistics of QoS parameters of relay links, combining them with required QoS parameters and radio interface topology information to calculate and adjust QoS parameters for access and relay links, enabling real-time scheduling decisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If distributed scheduling is used in multi-hop networks, then network flexibility and scalability are improved, but QoS maintenance capability deteriorates due to increased delay and inability to coordinate across hops
Solution Approach 1:
The patent implements a feedback mechanism where the eNB receives QoS parameter statistics from relay nodes and uses this information to determine and send back QoS parameters that need to be maintained by each relay node. This closed-loop feedback enables coordinated QoS maintenance across distributed hops while preserving scheduling flexibility.
Solution Approach 2:
The eNB acts as an intermediary that collects QoS statistics from relay nodes, processes this information, and distributes appropriate QoS parameters back to the relay nodes. This intermediary coordination allows distributed scheduling to function while maintaining overall QoS control that would otherwise be lost in multi-hop scenarios.
2Manufacturing precision
If QoS parameters are determined based on real-time statistics, then QoS maintenance accuracy is improved, but system complexity increases due to continuous monitoring and calculation requirements
Solution Approach 1:
The patent segments the QoS maintenance function into distinct components: relay nodes collect and report QoS statistics, the eNB processes this information and determines QoS parameters, then distributes these parameters back to relay nodes. This segmentation allows real-time accuracy without requiring every node to perform complex calculations, thereby reducing overall system complexity.
3Reliability
If centralized scheduling is used, then QoS maintenance capability is improved through coordinated control, but network flexibility and scalability deteriorate
Solution Approach 1:
The patent applies local quality by allowing each relay node to independently schedule its own local-hop links based on QoS parameters received from the eNB. This local autonomy provides flexibility while the centralized determination of QoS parameters by the eNB ensures overall QoS maintenance capability. Each node operates with locally optimized parameters rather than centralized micromanagement.
Data Source
AI summary
Disclosure of the present embodiments relate to a method, an apparatus, and a system for determining and maintaining quality of service parameters on a multi-hop network. The method for determining QoS parameters on a multi-hop network includes: in a data transmission process in a transmission path from a user equipment to an evolved NodeB, acquiring statistics of QoS parameters of a relay link in the transmission path; and determining, according to the statistics of the QoS parameters of the relay link and in combination with QoS parameters that need to be maintained in the transmission path and radio interface topology information in the transmission path, QoS parameters that need to be acquired by an access link and the relay link in the transmission path.