Mobile WiMAX Bridge for Seamless Indoor Outdoor Wireless Access
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Solution Overview
Problem
Existing wireless access systems are limited in providing both indoor local-area and outdoor wide-area wireless access, typically requiring a hard-wired connection between WiFi access points and external networks, restricting wireless connectivity beyond indoor areas.
Innovation Solution
A broadband wireless access system employing a Mobile WiMAX bridge that authenticates and allocates IP addresses, translates private IP addresses to public ones, and relays access terminals between networks to enable seamless indoor and outdoor wireless access, using a bridge logic unit for MAC and IP layer functions, including DHCP, NAT, and Quality of Service management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a WiFi access point provides only indoor local-area wireless access, then indoor wireless connectivity is achieved, but outdoor wide-area wireless access is not available
Solution Approach 1:
The WiFi access point is enhanced with integrated Mobile WiMAX functionality, allowing it to serve dual purposes: traditional WiFi indoor local-area access and Mobile WiMAX outdoor wide-area access. This multi-functionality eliminates the need for separate hard-wired connections and enables the access point to provide comprehensive wireless coverage across different environments and distance ranges.
2Reliability
If a hard-wired connection is used between WiFi access point and external network, then stable connection is achieved, but wireless connectivity beyond indoor area is restricted
Solution Approach 1:
The patent combines WiFi and Mobile WiMAX technologies into a single integrated access point system. The Mobile WiMAX module establishes wireless connections to external networks, replacing the traditional hard-wired connection requirement. This merging allows the system to maintain connection reliability while simultaneously extending wireless access range to outdoor areas, as the Mobile WiMAX component provides stable wireless backhaul connectivity.
3Reliability
If Mobile WiMAX bridge translates private IP address to public IP address, then network security is improved, but additional processing time is required
Solution Approach 1:
The Mobile WiMAX bridge performs IP address translation in advance as part of the connection setup process. When an access terminal connects, the bridge pre-translates private IP addresses to public IP addresses and establishes the mapping before actual data transmission begins. This preliminary action ensures network security through proper address translation while minimizing processing time during subsequent data communications, as the translation framework is already in place.
Data Source
AI summary
Disclosed is a method and apparatus for providing wireless access in a broadband wireless access system. The apparatus authenticates an access terminal when an access of the access terminal located in a first network employing a first predetermined access scheme is detected, allocates a private Internet Protocol (IP) address to the authenticated access terminal, translates the private IP address into a public IP address when an access of the access terminal through the private IP address is detected, and controls that the access terminal accesses a second network employing a second predetermined access scheme through the public IP address.