Cordless Telephone Base Unit Wireless LAN Bridge Control
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Solution Overview
Problem
Existing cordless telephone systems fail to connect to the Internet for high-speed data communication, cannot coexist and interconnect wireless IP and non-wireless LAN units, and struggle with relaying radio signals in environments where access points do not reach wireless IP terminals directly, such as large homes.
Innovation Solution
A cordless telephone system with a base unit that includes a wireless LAN interface and bridge control section to forward packet data between wireless IP terminals and access points, allowing wireless IP terminals with Internet connectivity to coexist with non-IP terminals and relay signals even in areas with poor signal reach.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a cordless telephone system uses traditional non-Wireless LAN technology, then it can maintain compatibility with existing cordless telephone portable units, but it cannot connect to the Internet for high-speed data communication required for Web browsing
Solution Approach 1:
The base unit is designed to handle multiple communication protocols simultaneously - it can process both traditional cordless telephone protocols for legacy portable units and Wireless LAN protocols for Internet connectivity. This multi-functionality allows the system to maintain backward compatibility while enabling high-speed data communication through Wireless LAN
Solution Approach 2:
The base unit acts as an intermediary device between traditional cordless telephone portable units and the Internet infrastructure. It receives data from legacy units, processes it through Wireless LAN protocol, and transmits it to the Internet, thereby enabling Internet access for traditional cordless telephone systems without requiring modifications to the portable units
2Adaptability or versatility
If a cordless telephone system adopts Wireless LAN technology for Internet connectivity, then it enables high-speed data communication, but it cannot allow coexistence and interconnection between wireless IP terminals and non-Wireless LAN cordless telephone units
Solution Approach 1:
The base unit serves as a protocol translation intermediary between Wireless LAN-capable IP terminals and non-Wireless LAN cordless telephone units. It receives data from IP terminals via Wireless LAN, translates the protocol format, and forwards it to traditional units using legacy protocols, enabling seamless interconnection between heterogeneous devices
Solution Approach 2:
The base unit is designed with universal communication capabilities to handle multiple protocol types simultaneously. It can interface with both Wireless LAN IP terminals and traditional cordless telephone units, acting as a universal gateway that manages protocol conversion and data routing between different communication standards
3Reliability
If a wireless IP terminal connects directly to a wireless access point, then it achieves simple connection topology, but it cannot operate in environments where radio signals do not reach the terminal directly such as large homes
Solution Approach 1:
The base unit functions as a signal relay intermediary in large home environments. When a wireless IP terminal cannot directly communicate with the wireless access point, the terminal communicates with the base unit, which then relays the data to the access point and vice versa, extending the effective communication range throughout the home
Solution Approach 2:
The system introduces an additional communication dimension by implementing a two-hop communication path (terminal-base unit-access point) alongside the direct path (terminal-access point). This dimensional expansion of the communication topology allows operation in environments where direct single-hop connection is not feasible
Data Source
AI summary
Cordless telephone equipment includes a portable unit and a base unit. The base unit includes: a portable unit control section controlling a communication protocol with the portable unit through a wireless interface wirelessly connecting with the non-IP terminal type portable unit; a wireless LAN interface section transmitting and receiving packet data to and from a wireless IP terminal and wireless LAN access point; a wireless LAN bridge control section forwarding the received packet data to the wireless IP terminal, or the wireless LAN access point, or within the base unit in accordance with a destination address of the packet data received through the wireless LAN interface section; and a base unit control section processing the packet data received from the wireless IP terminal and forwarded within the base unit, as data received from a portable unit under control of the base unit.