Uplink Scheduling Priority Parameters for PDN Connection AMBR Enforcement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 3GPP cellular communication systems inefficiently manage uplink (UL) data packet scheduling due to lack of association between scheduling parameters and aggregate maximum bit rate (AMBR) for PDN connections, leading to suboptimal resource utilization and unfair treatment of radio bearers during congestion.
Innovation Solution
A method and apparatus for scheduling uplink data packets on a packet data network connection by receiving scheduling priority parameters based on PDN connection characteristics, determining user transmission priority levels, and scheduling data packets accordingly, ensuring AMBR enforcement and fair resource allocation across radio bearers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If AMBR is enforced at the Node-B for uplink traffic, then uplink data transmission is controlled according to PDN connection characteristics, but the Node-B must maintain association between scheduling parameters and PDN connections, increasing scheduling complexity
Solution Approach 1:
The scheduling parameters are segmented into PDN connection-specific parameters and radio bearer-specific parameters. The PDN connection characteristics (AMBR) are associated with each radio bearer through the radio bearer configuration, allowing the Node-B to enforce AMBR at the PDN connection level while maintaining simple per-bearer scheduling implementation.
2Ease of operation
If scheduling priority parameters are assigned based on PDN connection characteristics, then fair resource allocation across radio bearers is achieved, but the signalling message complexity increases
Solution Approach 1:
The scheduling priority parameters are merged into the existing radio bearer configuration signalling message. The PDN connection characteristics (AMBR) and radio bearer parameters are combined in a single signalling message structure, allowing the Node-B to convey both AMBR information and bearer-specific parameters without requiring separate signalling protocols.
3Productivity
If the Node-B associates radio bearers with PDN connections for AMBR enforcement, then uplink resource utilization is optimized, but the radio bearer establishment and management process becomes more complex
Solution Approach 1:
The association between radio bearers and PDN connections is established preliminarily during the radio bearer setup process. The Node-B configures each radio bearer with PDN connection characteristics (AMBR) at the time of bearer establishment, so that when uplink scheduling occurs, the association is already in place and no additional complex association logic is needed during active data transmission.
Data Source
AI summary
A method of scheduling an uplink (UL) data packet on a packet data network (PDN) connection of at least one radio bearer by a wireless communication unit comprises receiving, by the wireless communication unit, a signalling message comprising at least one scheduling priority parameter assigned to at least one uplink radio bearer, wherein the at least one scheduling priority parameter is based on at least one characteristic of the PDN connection that the radio bearer belongs to. The method further comprises determining, from the at least one scheduling priority parameter, at least one user transmission priority level associated with at least one PDN connection of at least one radio bearer; and scheduling at least one uplink data packet transmission in response to the at least one user transmission priority level.