Wi-Fi Direct IP Address Allocation via Group Owner
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Solution Overview
Problem
Existing Wi-Fi direct technology faces limitations in connection speed due to the IP address allocation procedure being performed after terminal connection, which restricts further improvements in connection speed, especially when one terminal acts as a Group Owner and performs DHCP to allocate an IP address to another terminal.
Innovation Solution
A method and apparatus for rapidly allocating an IP address between terminals in a wireless communication network, where a Group Owner determines the Group Owner Intent and allocates a private IP address to a Group Client, enabling efficient IP address allocation during the connection process, thereby improving connection speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If IP address allocation is performed after terminal connection using DHCP, then IP address assignment can be completed, but connection speed is limited and cannot be further improved
Solution Approach 1:
The patent applies preliminary action by allocating IP addresses during the connection establishment phase before the connection is fully completed. The Group Owner allocates IP addresses to Group Clients as part of the initial connection process, rather than performing DHCP allocation afterward. This preliminary IP address assignment eliminates the post-connection allocation delay and improves overall connection speed.
2Productivity
If Group Owner performs DHCP server function to allocate IP address, then IP address can be assigned to Group Client, but connection speed improvement is restricted
Solution Approach 1:
The patent extracts the IP address allocation function from the traditional DHCP server process and integrates it directly into the Group Owner's connection management capabilities. By taking out the DHCP dependency and implementing a simplified IP address assignment mechanism within the Wi-Fi Direct connection process, the system reduces process complexity while maintaining productivity.
Solution Approach 2:
The Group Owner performs IP address allocation autonomously without requiring external DHCP server infrastructure. The Group Owner self-services by maintaining a pool of IP addresses and directly assigning them to Group Clients during connection establishment, eliminating the need for separate DHCP negotiation phases.
Data Source
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AI summary
A method and apparatus allocates an IP address between terminals in a wireless communication network in which terminals directly communicate with each other in a wireless scheme without an AP. The method for allocating an Internet Protocol (IP) address of a wireless terminal capable of performing P2P communication, includes a discovery step of discovering at least one external terminal capable of performing the P2P communication and connecting with the at least one discovered external terminal by the wireless terminal, and a negotiation step of negotiating and determining with the external terminal which external terminals become a group owner and a group client in a P2P group, respectively by the wireless terminal. One of the discovery step and the negotiation step includes transmitting an IP address to be allocated to the group client to the external terminal from the wireless terminal.