HRPD IP Flow Map Update Connection Resource Management
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Solution Overview
Problem
Existing methods for establishing new service connections in IP flow mapping updates in HRPD networks fail to account for actual network conditions, leading to unconditional acceptance by PCF and PDSN, which can result in resource insufficiency and rejection issues.
Innovation Solution
A method that allows the PCF and PDSN to reject or partially reject requests for establishing new service connections by determining available resources, involving steps such as sending A11-registration request messages and responding with acceptance, partial acceptance, or denial based on supported connections, and releasing unsupported connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the PCF and PDSN unconditionally accept all requests for establishing new service connections in IP flow mapping updates, then the connection establishment process is simplified and faster, but network resources may become insufficient leading to connection failures
Solution Approach 1:
The patent implements dynamic resource checking and selective connection establishment. The PCF dynamically determines whether to accept or reject connection requests based on real-time network resource availability. The PDSN receives connection requests with resource requirements and selectively establishes connections based on current resource status, transforming the static unconditional acceptance into a dynamic adaptive process that balances speed and reliability
Solution Approach 2:
The patent applies partial action by allowing the PCF to accept only the necessary subset of connection requests that can be fulfilled with available resources. Instead of attempting to establish all requested connections (excessive action), the system performs partial establishment of connections that are feasible, releasing resources for unsupported connections while maintaining successful connections
2Reliability
If the PCF and PDSN check network resources before accepting connection requests, then resource management is improved and connection failures are reduced, but the signaling overhead and processing complexity increase
Solution Approach 1:
The patent implements preliminary resource checking as part of the connection establishment signaling flow. The PDSN performs resource availability determination before committing to connection establishment, and the PCF performs preliminary acceptance decisions based on resource status. This preliminary action prevents wasted signaling on impossible connections while maintaining a relatively simple processing framework
Solution Approach 2:
The patent establishes a feedback mechanism where the PDSN provides resource status information back to the PCF through the A11-registration reply message. The PCF uses this feedback to make informed acceptance decisions. This feedback loop enables reliable resource management while keeping the signaling structure organized and manageable through standardized message exchanges
3Adaptability or versatility
If the system releases unsupported connections after resource determination, then network resources are freed for other uses, but additional signaling messages and processing steps are required
Solution Approach 1:
The patent merges the resource determination, connection establishment decision, and connection release actions into a coordinated signaling flow. The A11-registration request and reply messages carry both resource requirement information and establishment status. Unsupported connections are released as part of the same signaling sequence that establishes supported connections, combining multiple actions into an integrated process that reduces overall complexity
Data Source
AI summary
The present invention discloses a method for establishing connections in IP flow mapping update in a HRPD network, comprising steps of: (1) when a PCF receives a request for establishing A8 connections that need to be re-mapped, if determining that there is A8 connection supported, sending an A11-registration request to a PDSN; (2) when the PDSN receives the information on A10 connections in the A11-registration request, if determining that there is A10 connection supported, establishing those A10 connections and sending an A11-registration reply; (3) when the PCF receives the reply message, establishing all the A8 connections corresponding to the A10 connections and sending an A9-connect-A8 to the AN; (4) an AT and the AN releasing and removing the IP flow that can not be mapped to any of the A8 connections or resource reserved by the IP flow according to the A9-connect-A8 received.