Portable Computing Device WWAN WLAN Gateway Protocol
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Solution Overview
Problem
Existing wireless communication devices lack the ability to seamlessly integrate and manage both public wireless wide area networks (WWAN) and private wireless local area networks (WLAN) within a portable computing device, limiting their functionality as a portable access point without wired connections.
Innovation Solution
A portable computing device equipped with both WWAN and WLAN interfaces, along with a processor executing gateway protocols, detects entry into a WWAN service area and establishes a private WLAN, functioning as an access point by registering with the WWAN and providing gateway services, including packet routing, authentication, and network management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a portable computing device integrates both WWAN and WLAN interfaces, then connectivity versatility is improved, but device complexity increases
Solution Approach 1:
The patent combines WWAN and WLAN interfaces within a single portable computing device, allowing the device to function as both a mobile communicator and a wireless access point. This merging of previously separate network interfaces enables the device to seamlessly operate in multiple network roles without requiring separate dedicated devices.
Solution Approach 2:
The portable computing device is designed to perform multiple functions: it can register with public WWAN networks for wide-area communication, establish private WLAN networks for local communication, and act as a gateway between these networks. This multi-functionality eliminates the need for separate dedicated devices for each network type.
2Ease of operation
If the portable device acts as an access point without wired infrastructure, then mobility is improved, but network stability may worsen
Solution Approach 1:
The patent implements dynamic network role assignment where the portable device can transition between different operational modes: registering with WWAN networks when mobile, establishing WLAN access points when stationary, or functioning as a gateway. This dynamic adaptability allows the device to maintain network stability by selecting appropriate operational modes based on its physical state and network requirements.
Solution Approach 2:
The portable computing device serves as an intermediary between public WWAN networks and private WLAN networks, managing the gateway protocol to route traffic appropriately. This intermediary role allows the device to maintain stable network connections by mediating between the mobility requirements of portable operation and the stability requirements of reliable communication.
3Adaptability or versatility
If gateway protocol is implemented for WWAN-WLAN integration, then network management capability is improved, but software complexity increases
Solution Approach 1:
The gateway protocol is designed to enable the portable device to automatically manage its own network operations without requiring complex external control. The device self-regulates the gateway functions, dynamically establishing and managing WWAN-WLAN connections based on its operational state, thereby reducing the need for complex software control mechanisms.
Data Source
AI summary
In one embodiment of the present invention, a portable computing device for wireless communications comprises a first network interface for communicating with a public wireless wide area network (WWAN), a second network interface for communicating with a private wireless local area network (WLAN), and a processor executing under control of software instructions, the software instructions defining a gateway protocol, the gateway protocol establishing the portable computing device as an access point within the private WLAN after the wireless presence on the public WWAN is established.