IP Flow Routing Rule Negotiation for Network-Initiated Mobility
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Solution Overview
Problem
Current IP flow routing solutions lack mechanisms for network-initiated IP flow mobility and do not define an optimum strategy for both UE-initiated and network-initiated IP flow mobility procedures.
Innovation Solution
A method and device that generate and enforce a new IP flow routing rule different from the current rule, allowing negotiation between communication devices to determine the optimal routing rule, involving modules for generating, notifying, and processing routing rules based on network and user preferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a terminal mobility management protocol (DSMIPv6) is used for IP flow mobility, then the UE can initiate routing rule updates, but the network cannot initiate IP flow mobility procedures
Solution Approach 1:
The patent inverts the traditional terminal-initiated mobility model by enabling the network side (PGW/PCRF) to initiate IP flow mobility procedures. The network can now generate routing rules and send them to the UE, allowing the network to control flow mobility based on network conditions rather than only terminal decisions.
Solution Approach 2:
The patent introduces the PCRF (Policy and Charging Rules Function) as an intermediary entity that mediates between the PGW and the UE. The PCRF receives routing rules from the PGW, processes them according to policy, and facilitates the mobility management procedure, enabling coordinated network-initiated mobility control.
2Adaptability or versatility
If routing rules are strictly enforced without negotiation, then routing control is simplified, but adaptability to network conditions and user preferences is reduced
Solution Approach 1:
The patent implements a feedback mechanism where the UE evaluates received routing rules against local conditions (user preferences, terminal state) and provides feedback to the network. The network can adjust subsequent routing rule transmissions based on this feedback, creating an adaptive loop that balances network control with terminal adaptability.
Solution Approach 2:
The patent makes the routing rule enforcement dynamic by allowing negotiation between network and terminal. Instead of strict one-way enforcement, the system allows the UE to indicate acceptance or rejection of routing rules, and the network to adjust its proposals, creating a flexible adaptive mechanism.
Data Source
AI summary
Disclosed are a method and device for determining an IP flow routing rule, wherein a technical solution of making an optimal routing rule through negotiation between a network device and a terminal is provided. The method comprises: when initiating an IFOM process, a first communication device generates a first routing rule that is different from a routing rule currently executed by a second communication device; the first communication device informs the second communication device of the first routing rule, and requests the second communication device to execute the first routing rule; and the first communication device determines, according to a message returned by the second communication device, the routing rule that is eventually executed by the second communication device.