Unlock instant, AI-driven research and patent intelligence for your innovation.

Interference canceling for mobile devices

a mobile device and interference canceling technology, applied in the field of interference handling, can solve problems such as interference between devices and intra-devices

Inactive Publication Date: 2015-01-29
SONY MOBILE COMM INC
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a method and device for reducing interference between signals in a wireless communication system. The device encodes a first digital signal, modulates it to create RF signals, and transmits them through antennas. It also receives second RF signals that may interfere with the first RF signals. The interference cancellation unit then removes the potentially interfering effects from the received signals by subtracting them from the transmitted signals. This allows for improved signal quality and reduced interference. The patent also mentions that the interference can be caused by RF signals in different frequency bands, and that the method can be implemented in a mobile communication device. The technical effects of this patent include improved signal quality, reduced interference, and improved performance of wireless communication systems.

Problems solved by technology

Unfortunately, a potential consequence of carrier aggregation may be intra-device interference, occurring between simultaneously transmitted and received signals.

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
  • Interference canceling for mobile devices
  • Interference canceling for mobile devices
  • Interference canceling for mobile devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033]The following detailed description refers to the accompanying drawings. The same reference numbers in different drawings may identify the same or similar elements. The same reference numbers in different drawings identify the same or similar elements. Also, the following detailed description does not limit the invention. Instead, the scope of the invention is defined by the appended claims and equivalents.

[0034]As described herein, a user device, such as a mobile device, a portable device, or a handheld device, may perform transmitter-to-receiver interference canceling to enable implementation of carrier aggregation using otherwise impracticable combinations of carrier frequency bands. According to an exemplary embodiment, when transmitting, the user device determines potentially any interfering signals based on the transmission of a data signal (e.g., to a base station or other device). The user device then, based on this determination, generates an interfering signal for use...

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 user-device implemented method includes encoding a first digital signal to generate a first digital baseband signal and modulate the first digital baseband signal to generate one or more RF signals corresponding to one or more frequency bands. The one or more RF signals are transmitted via one or more antennas. Substantially simultaneously with the transmission of the one or more RF signals, a second one or more RF signals is received via the one or more antennas. The second one or more RF signals are demodulated to generate a second digital baseband signal. The first digital baseband signal is subtracted from the second digital baseband signal to generate a modified second digital baseband signal.

Description

TECHNICAL FIELD OF THE INVENTION[0001]The present invention relates to wireless communication devices, and more particularly, interference handling in such wireless communication devices.DESCRIPTION OF RELATED ART[0002]In operation, a wireless communication devices use a portion of a particular radio frequency spectrum for wirelessly transmitting and receiving information. Regulatory bodies control the particular frequency spectra for mobile communication systems, and detailed definition typically made by standardization organizations. However, in general, each spectrum is divided into different frequency bands, with each band defined as a portion / range of the various frequencies allocated for certain type of usage, either licensed to a specific network operator or unlicensed for usage by anyone.[0003]In modern wireless systems, frequency bands can be defined in order to operate in one out of two principal modes: time division duplex (TDD) or frequency division duplex (FDD). In a ti...

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(United States)
IPC IPC(8): H04L25/03
CPCH04L25/03006H04B1/525H04B1/0475H04B7/00H04B1/40H04B15/00H04B1/56
Inventor LJUNG, RICKARDZANDER, OLOF
Owner SONY MOBILE COMM INC