Radio repeater

A repeater, radio technology, used in radio relay systems, radio transmission systems, wireless communications and other directions, can solve problems such as reducing the overall communication capability of the system

Inactive Publication Date: 2007-03-21
KONINKLIJKE PHILIPS ELECTRONICS NV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, only a limited number of channels are available in a given frequency band in a communication system
Using two channels to form a communication link normally formed by one channel will reduce the overall communication capacity of the system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Radio repeater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] 1, as shown in an exploded view, the radio communication system 1 includes a mobile phone 2 and a personal digital assistant (PDA) 3. Mobile phone 2 is shown carried in the back pocket of user 4 and contains Bluetooth  Transceiver 5. As shown in the exploded view, the PDA 3 is in the hands of the user 4 and contains Bluetooth like the mobile phone 2  The transceiver 6, therefore, in this embodiment, the radio communication system 1 is Bluetooth  Communication Systems. According to Bluetooth  The latest version of the specification configures transceivers 5 and 6, where the Bluetooth  The specification is the core specification v1.2, which was published on November 5, 2003, and is available from Bluetooth SIG, Inc. The present invention mainly uses this embodiment for illustration, but it is applicable to various other short-range radio communication systems, especially including Wi-Fi  system. The following will mention some in addition to Bluetooth  Appropriate impl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A radio repeater (8) operates in a radio communication system (1) (such as a Bluetooth<(R)> communication system) including a mobile telephone (2) and a personal digital assistant (PDA) (3) each having a (Bluetooth<(R)>) transceiver (5,6). The repeater (8) is housed in a headset (7) incorporating an earpiece and microphone (not shown) for voice communication. The repeater (8) comprises a receive antenna (9) for receiving signals, e.g. in a band around 2.4 GHz; means (12) for shifting the frequency of the received signals by a constant frequency interval, e.g. to a band around 800 MHz; and a transmit antenna (14) for transmitting the frequency shifted signals. So, the mobile telephone (2) and the PDA (3) can communicate with each other directly using their Bluetooth<(R)> transceivers (5,6), but, if there is no signal propagation path between them, such as when the body of a user (4) comes between them, they can receive the signals transmitted by the repeater (8). As these signals have just been shifted in frequency, the transceivers (5,6), only need knowledge of the way in which the required signal was originally transmitted (e.g. its frequency hopping sequence) and the frequency shift to successfully receive the required signal via the repeater (8).

Description

Technical field [0001] The invention relates to a radio repeater. More particularly, the present invention relates to a radio repeater used in a short-range radio communication system and a method of relaying signals in a short-range radio communication system. Background technique [0002] Short-range radio communication systems are becoming more and more common. For example, many devices that use short-range radio transmission to communicate with each other in the so-called "piconet" are currently being developed. Bluetooth  Is an example of this technology, with Bluetooth  Functional devices include mobile phones and their peripheral devices, such as headsets and hands-free components, as well as computers, personal digital assistants (PDAs), and so on. Similarly, the Institute of Electrical and Electronics Engineers (IEEE) has developed several standards for wireless networks, generally 802.11 TM Wireless Local Area Network (WLAN) standard, commercially Wi-Fi  . Currently,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04L12/28H04J99/00
CPCH04B7/15542H04B7/14H04W16/26
Inventor A·W·佩恩D·L·雷恩斯R·J·卡德维尔
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap