Wireless Node Direct Reachability Detection for Packet Transmission
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Solution Overview
Problem
Mobile IP and VPN protocols often force data packets to take inefficient paths by tunneling them through a home agent or VPN server, even when a direct, single-hop path is available, especially in ad-hoc and mobile networks where infrastructure connectivity is limited.
Innovation Solution
Implementing a method for wireless communication devices to determine if a destination node is directly reachable within the same subnetwork, allowing data packets to be transmitted directly without using Mobile IP or IPSec tunneling protocols, using a directly reachable node/network table that tracks and updates the presence of nodes within the communication network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Mobile IP or VPN tunneling is used to transmit data packets, then security and IP session continuity are maintained, but transmission efficiency and path optimality deteriorate
Solution Approach 1:
The system dynamically determines the transmission path by evaluating whether the destination node is directly reachable or requires tunneling. This dynamic path selection allows the system to adapt to changing network conditions and node locations, choosing direct transmission when possible and tunneling when necessary for security or mobility support.
Solution Approach 2:
The patent applies different transmission methods based on local conditions - direct transmission for locally reachable nodes and tunneling for remote nodes. The directly reachable node table enables local quality assessment, allowing packets to be transmitted via the most appropriate path based on the specific destination's characteristics.
2Reliability
If Mobile IP tunneling is used for all transmissions, then IP session continuity is maintained during node movement, but network infrastructure dependency increases
Solution Approach 1:
Instead of applying tunneling universally, the system applies it only when necessary - i.e., when the destination node is not directly reachable. This partial application of tunneling reduces infrastructure dependency while maintaining IP session continuity where needed.
3Productivity
If direct transmission is used for reachable nodes, then transmission efficiency improves, but security and session continuity may be compromised
Solution Approach 1:
The directly reachable node table acts as an intermediary mechanism that enables direct transmission while maintaining security and session continuity. By mediating the transmission decision-making process, it allows efficient direct paths for reachable nodes while ensuring that security requirements are met through the table's validation function.
4Reliability
If tunneling is used for visiting nodes in ad-hoc networks, then security is maintained, but transmission path optimality deteriorates
Solution Approach 1:
The system dynamically adjusts the transmission path for visiting nodes based on their reachability status. When a visiting node is directly reachable, the system switches to direct transmission, eliminating unnecessary tunneling overhead and improving path optimality while maintaining security through the directly reachable node table.
Data Source
AI summary
A method for transmitting a packet from a transmitting node to a destination node in a communication network can enable improved network efficiency. The method includes receiving and storing identification information concerning at least one foreign node that is directly reachable in the communication network (block 505). It is then determined, using the identification information, whether the destination node is directly reachable in the communication network (block 510). Based on whether the destination node is directly reachable in the communication network, it is then determined whether to transmit the packet to the destination node using a tunneling protocol or without using a tunneling protocol (block 515). The packet is then transmitted from the transmitting node to the destination node (block 520).