Control Plane IP Address Assignment with Routing Rules
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Solution Overview
Problem
Current methods for determining session and service continuity modes in user equipment do not effectively generate routing rules, leading to inefficient communication when the network triggers reselection of user plane devices and reassigned IP addresses, resulting in suboptimal source IP address selection for service transmission.
Innovation Solution
A communication method where a control plane device assigns an IP address to user equipment, obtains a routing rule using a routing policy network element, and sends both the IP address and routing rule to the user equipment, enabling it to select an appropriate source IP address based on the application and routing rule for improved communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the network side triggers reselection of user plane device and reassigns IP address, then network resource utilization is improved, but the user equipment cannot select appropriate source IP address leading to low communication efficiency
Solution Approach 1:
The control plane device obtains routing rules from the routing policy network element in advance, before the user equipment needs to select a source IP address. This preliminary preparation of routing rules enables the user equipment to quickly and accurately select appropriate source IP addresses when multiple IP addresses are available, thereby maintaining high communication efficiency during user plane device reselection
Solution Approach 2:
The routing policy network element acts as an intermediary between the control plane device and the user equipment. It provides routing rules that guide the user equipment in selecting source IP addresses, resolving the information gap that would otherwise cause communication inefficiency during IP address reassignment
2Reliability
If the control plane device assigns multiple IP addresses to user equipment, then service continuity is improved, but the user equipment lacks routing rules to select source IP address
Solution Approach 1:
The routing policy network element serves as an intermediary that generates and provides routing rules to the control plane device, which then forwards them to the user equipment. This intermediary mechanism ensures that routing rules are available to guide source IP address selection, enabling the user equipment to effectively utilize multiple IP addresses for maintaining service continuity
Solution Approach 2:
Routing rules are obtained and prepared in advance by the control plane device before the user equipment needs to perform source IP address selection. This preliminary action ensures that the user equipment has the necessary routing information ready, preventing information loss and enabling effective source IP address selection
Data Source
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AI summary
The present disclosure pertains to the field of Internet communications, and provides a communication method and a communications apparatus. The method includes: assigning, by a control plane device, an Internet Protocol IP address to user equipment; obtaining, by the control plane device by using a routing policy network element, a routing rule corresponding to the IP address; and sending, by the control plane device, the routing rule and the IP address to the user equipment, where the routing rule is used by the user equipment to determine a source IP address when the user equipment initiates a service. In the present disclosure, the control plane device may assign the IP address to the user equipment, obtain the routing rule corresponding to the IP address, and send the routing rule and the IP address to the user equipment, so that the user equipment can select, based on the routing rule, an appropriate source IP address to access an application, thereby improving communication efficiency.