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Multi-mode communication device with position location

A kind of wireless communication equipment, multi-mode technology, applied in the direction of wireless communication, selection device, electrical components, etc., can solve the problems of expensive phones, large volume, etc., and achieve the most weight and power requirements, small volume, small weight and power requirements Effect

Inactive Publication Date: 2004-08-18
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such phones are expensive, relatively bulky, and require many communication accessories

Method used

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  • Multi-mode communication device with position location
  • Multi-mode communication device with position location
  • Multi-mode communication device with position location

Examples

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no. 1 example

[0151] FIG. 5 is a block diagram of a WCD 500 according to another embodiment. WCD 500 includes only satellite transmit and receive channels 214 and 216 , and GPS receive channel 230 . WCD 500 is similar to WCD 102, except that terrestrial transmit and receive channels 224 and 226 and associated transmit and receive routing switches 316 and 370 are omitted. Thus, WCD 500 is simpler, more compact, lighter, less expensive, and more power efficient than the above-described embodiments. Likewise, WCD 500 can simultaneously receive and process GPS and satellite communication reception signals.

[0152] A further difference between WCD 500 and WCD 102 includes transmit IF amplifier 504 coupled between transmit IGF gain control amplifier 314 and IF BPF 320 , and reference signal source 506 . Since terrestrial communication channels are omitted, the reference signal source 506 may be a single sideband signal source.

[0153] V. Satellite Transceiver and GPS Only, Second Embodiment ...

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Abstract

The present invention provides a multiple band mobile radio (also referred to as a Wireless Communication Device (WCD)) capable of communicating with both a satellite communication system and a terrestrial communication system. The satellite communication system can be a Low Earth Orbit (LEO) satellite communication system. The terrestrial communication system can be a Personal Communication System (PCS), or a cellular system, including either an analog or a digitally based cellular system. The WCD can concurrently receive signals from the terrestrial communication system and the satellite communication system. Also, the WCD can receive signals useful for position location, such as a GPS satellite signal alone, or both GPS and satellite communication signals, simultaneously.

Description

Background of the invention [0001] I. Field of Invention [0002] This invention relates to wireless communications and more particularly to a wireless device, such as a radiotelephone or modem, which communicates with satellite or terrestrial communication systems and receives signals from satellite position positioning systems from which the location of the wireless device can be determined. [0003] II. Related technologies [0004] There are currently many different types of radiotelephone or wireless communication systems, including different terrestrial based wireless communication systems and different satellite based wireless communication systems. Different land-based wireless communication systems include Personal Communications Services (PCS) and cellular telephones. Known examples of cellular telephones include the cellular analog Advanced Mobile Phone System (AMPS), and later digital cellular systems: Code Division Multiple Access (CDMA) systems; Time Division M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40H04B1/00H04B1/06H04B7/185H04B7/216H04W64/00H04W84/00H04W88/06
CPCH04B7/18563H04B7/18554H04W88/06H04B1/40H04B7/185
Inventor R·L·罗宾奈特
Owner QUALCOMM INC