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Device and method for reducing interference

A communication device and data technology, which is applied to communication between multiple stations, data exchange through path configuration, radio relay system, etc., can solve the problem of blocking LPRF module reception, interfering with receiver branches, unable to transmit and receive at the same time And other issues

Inactive Publication Date: 2003-02-05
NOKIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This improves radio resource utilization, but also makes it impossible to separate the transmit branch of an LPRF module from the receive branch of the same LPRF module, and explains why one LPRF module can either transmit or receive, but not both
In addition, different intermodulation product signals may generate and interfere with the receiver branch
Thus, the transmission of one LPRF module may block the reception of another LPRF module even if the frequencies of transmission and reception are different

Method used

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  • Device and method for reducing interference
  • Device and method for reducing interference
  • Device and method for reducing interference

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Embodiment Construction

[0101] figure 1 A block diagram of a Bluetooth repeater 10 according to a preferred embodiment of the present invention is shown. The relay device comprises a processor PU1 , such as a microprocessor, main processor or digital signal processor, which controls the operation of the device according to software SW1 stored in memory MEM1 . The device also has several bluetooth modules BT1...BT4 with transceiver circuits (TRX1...TRX4) and clocks (CLK1. .....CLK4). In Bluetooth, the operation of the slave is synchronized to the clock of the master so that they can cooperate with each other. Here, this connectivity is used so that any one of BT1...BT4 can control the clocks of the rest of BT1...BT4.

[0102] PU1 controls the Bluetooth module as explained below.

[0103] FIG. 2 refers to an exemplary communication system 20, showing figure 1 A schematic diagram of the operation of the Bluetooth repeater 10. In the communication system 20 , five slaves 22 to 26 are within the cov...

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Abstract

Bluetooth relay devices can be used for networking different Bluetooth devices. Such relay devices typically have many Bluetooth modules, each of which can communicate with a number of different Bluetooth devices and / or adjacent relay devices. In order to avoid transmitting by one Bluetooth module of a relay device whilst its another Bluetooth module receives, all the Bluetooth modules of the relay device are set as masters and one of them is given control over the others so as to enforce all the Bluetooth modules to time their receptions so that no simultaneous transmissions by another Bluetooth modules occur.

Description

technical field [0001] The present invention relates to interference reduction, and more particularly, to interference reduction in low power radio frequency (LPRF) communications. technical background [0002] The existence of various types of electronic devices has created a need for these devices to communicate with each other in a cost-effective and easy-to-implement manner. Can be between two or more users' communication devices (such as telephones, computers, printers, fax machines, and personal digital assistants) either by wired connections using electrical conductors, or by wireless communications using infrared or LPRF signals carry out such communications. For many applications, LPRF signals are preferred because they do not require a line-of-sight connection between the two devices. The LPRF communication device has an LPRF module that provides LPRF functionality. They send very weak radio signals compared to those sent by cellular phones, such as GSM (Global ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/00H04B5/48H04B7/26H04L12/28H04L12/56
CPCH04W72/1242H04W16/14H04W84/18H04W72/02H04W88/06H04W72/569
Inventor T·托梅拉A·帕林
Owner NOKIA CORP
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