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Radio device

A wireless device and wireless communication device technology, applied in wireless communication, radio wave measurement system, navigation, etc., can solve the problem that audio frequency band audio information and location information cannot be sent at the same time, and achieve the effect of precise location management

Inactive Publication Date: 2010-03-31
KENWOOD CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional wireless devices that transmit location information through an analog wireless communication system using MSK (Minimum Shift Keying) modulation cannot simultaneously transmit audio information and location information in the audio frequency band

Method used

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Examples

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Embodiment Construction

[0042] First, configuration will be described.

[0043] figure 1 A wireless communication system 1 including wireless devices according to the present embodiment is shown.

[0044] Such as figure 1 As shown, the wireless communication system 1 includes a wireless device 10 installed in a mobile station and a wireless device 20 installed in a base station and connected to a PC 20 . The wireless communication system 1 has the wireless device 20 that receives location information indicating the current location of the mobile station from the wireless device 10, and the PC 30 performs location management of the mobile station by using the location information.

[0045] Although for convenience figure 1 Units for each of the wireless device 10 and the wireless device 20 are shown connected, but the wireless device 10 may be installed by the number of mobile stations. For example, a mobile station is a vehicle.

[0046] PC 30 is a general-purpose computer. It has location m...

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Abstract

If it is judged that audio information is being transmitted when transmitting position information by a control unit, a radio device of a mobile station side embeds the position information in an empty packet of audio information being transmitted by the control unit and causes a radio communication unit to transmit the packet to a radio device of a base station side. Thus, it is possible to perform accurate position management even when an audio communication is present.

Description

technical field [0001] The present invention relates to a wireless device. Background technique [0002] Vehicle management systems using wireless devices have been constructed. In those systems, a wireless device is installed in a moving vehicle (mobile station) and a base station, so that the wireless device on the moving vehicle periodically transmits location information indicating its current location to the wireless device in the base station. This enables the base station to manage the position of the moving vehicle by processing the position information acquired via the wireless device using a PC (Personal Computer) or the like. [0003] Such as Figure 7 As shown, a wireless device on a moving vehicle with a GPS receiver receives GPS information for various time periods, generates and transmits location information. However, a conventional wireless device that transmits location information through an analog wireless communication system using MSK (Minimum Shift K...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00G01S5/00G01C21/26H04B1/3822H04B1/40H04W4/02H04W64/00H04W88/02
CPCH04L29/08081G08G1/20H04L67/00G01C21/00G08B5/22
Inventor 沼井由明
Owner KENWOOD CORPORATION
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