L2 Session Control VLAN Labeling for MAC Table Reduction
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Solution Overview
Problem
Existing session establishment methods result in excessively large MAC tables for L2 forwarding functional entities, leading to reduced packet forwarding efficiency when multiple mobile devices access the same customer location function set.
Innovation Solution
Configuring a VLAN label by the L2 session control functional entity for an infrastructure virtual circuit (IVC) and binding it to user equipment (UE) through a routing policy, allowing the L2 forwarding functional entity to forward packets directly to the IVC without maintaining a large MAC table.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the L2 forwarding functional entity stores a MAC address of each user to enable simultaneous access, then multiple mobile devices can access simultaneously, but the MAC table becomes excessively large, increasing search time and reducing packet forwarding efficiency
Solution Approach 1:
The patent extracts the MAC address table functionality from the L2 forwarding functional entity and relocates it to the L2 session control functional entity. This separation allows the L2 forwarding functional entity to operate with a much smaller table, improving packet forwarding efficiency while maintaining the ability to handle multiple simultaneous users through the L2 session control functional entity's MAC address table.
2Adaptability or versatility
If the L2 forwarding functional entity maintains a large MAC table to support multiple users, then simultaneous access is enabled, but the table search time increases
Solution Approach 1:
The patent extracts the MAC address table from the L2 forwarding functional entity and places it in the L2 session control functional entity. This redistribution reduces the size of the table that the L2 forwarding functional entity must search through, thereby decreasing MAC address search time and improving overall system performance.
3Device complexity
If the customer location function set directly forwards L2 packets with MAC layer addresses, then packet forwarding is simplified, but the L2 forwarding functional entity must store each user's MAC address, causing the MAC table to become excessively large
Solution Approach 1:
The patent extracts the MAC address table functionality from the L2 forwarding functional entity and relocates it to the L2 session control functional entity. This allows the customer location function set to continue forwarding packets with MAC layer addresses while the L2 session control functional entity maintains the MAC address table, preventing it from becoming excessively large.
Solution Approach 2:
The L2 session control functional entity acts as an intermediary between the customer location function set and the L2 forwarding functional entity. It receives packets with MAC addresses, maintains the MAC address table in a centralized manner, and enables the L2 forwarding functional entity to forward packets without storing large MAC tables locally.
Data Source
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AI summary
The present invention is applicable to the field of communications and provides a session establishment method and apparatus. The method includes: acquiring an infrastructure virtual circuit IVC corresponding to a user equipment UE; sending a virtual local area network VLAN label corresponding to the IVC to a customer location function set, so that the customer location function set adds the VLAN label to a packet of the UE, where the VLAN label is configured by an L2 session control functional entity for the IVC; and notifying an L2 forwarding functional entity of the VLAN label, so that the L2 forwarding functional entity forwards, to the IVC, the packet sent by the customer location function set and added with the VLAN label. In the present invention, a case in which the L2 forwarding functional entity needs to store a large MAC table is avoided, and packet forwarding efficiency is improved.