Communication Control Device for Wireless Terminal Association and Packet Routing
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Solution Overview
Problem
Current communication systems face high system load when enabling communication between terminals without a direct interface to the mobile communication network, requiring base station compatibility with protocols like L2TP, which increases load on the entire system.
Innovation Solution
A communication control device and method that updates an association table with identification numbers of connected wireless devices and transmits correction packets to optimize packet routing, allowing direct communication between terminals and reducing system load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If base station compatibility with L2TP protocol is implemented to relay communication between terminals, then communication between terminals without direct interface is enabled, but system load increases
Solution Approach 1:
The patent extracts the communication relay function from the base station and relocates it to the wireless device. The base station only performs simple packet forwarding based on MAC addresses, while the wireless device handles the complex L2TP protocol processing and terminal identification number management, thereby reducing base station load and system complexity
Solution Approach 2:
The patent introduces an intermediary mechanism where the wireless device acts as a mediator between terminals. The wireless device receives packets from one terminal, looks up the destination terminal's identification number using the source MAC address, and forwards the packet appropriately, enabling communication without requiring base station protocol compatibility
2Adaptability or versatility
If base station relays all communication packets between terminals, then communication is enabled, but communication efficiency decreases
Solution Approach 1:
The patent segments the communication process into two parts: control plane functions (L2TP protocol processing, terminal identification management) are handled by the wireless device, while data plane functions (packet forwarding) are handled by the base station. This segmentation allows efficient packet forwarding without complex protocol processing at the base station
Solution Approach 2:
The patent implements preliminary action by having the wireless device pre-process packets to extract terminal identification numbers and perform lookup operations before forwarding to the base station. The base station only needs to perform simple MAC address-based forwarding, significantly improving communication efficiency
Data Source
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AI summary
A communication control device (2) includes an association table updater (12) and a correction packet transmitter (13). The association table updater (12) updates, when receiving from a first wireless device a packet containing an identification number of a first communication terminal connected to the first wireless device, an association table storing an address of the first wireless device and the identification number of the first communication terminal. The correction packet transmitter (13) transmits, when a packet received from a second wireless device to which a second communication terminal is connected contains an address of the second wireless device, an identification number of the second communication terminal, and an identification number indicating a destination of the packet, and when the identification number indicating the destination is the identification number of the first communication terminal stored in the association table, a correction packet containing the address of the second wireless device and the identification number of the second communication terminal to the first wireless device after the packet is transmitted to the first wireless device.