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Radio Communication apparatus and method

A wireless communication device and wireless communication technology, applied in radio transmission systems, communication between multiple stations, polarization/direction diversity, etc., can solve problems such as signal interference

Inactive Publication Date: 2006-08-30
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when there are two or more wireless terminal devices using the same frequency in the same direction, the conventional wireless communication system has a problem that a gap between signals transmitted in the same direction by terminals using the same frequency occurs in the base station. interference

Method used

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  • Radio Communication apparatus and method
  • Radio Communication apparatus and method
  • Radio Communication apparatus and method

Examples

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no. 1 example

[0025] This embodiment explains the case where the polarization used in transmission and reception is the same and the communication speeds before modulation and after demodulation are also the same in a wireless communication system according to the present invention. figure 1 is a block diagram illustrating configurations of a radio base station and a radio terminal device according to the first embodiment of the present invention.

[0026] exist figure 1 Among them, a radio base station 101 has antennas 102 and 103 , an antenna switching section 104 , a control section 105 , and a transmission section 106 . Wireless terminal device 201 has antennas 202 and 203 , antenna switching section 204 , control section 205 , and receiving section 206 .

[0027] Wireless signals of different polarizations are transmitted using the antennas 102 and 103 . Similarly, antennas 202 and 203 are used to transmit wireless signals of different polarizations.

[0028] The antennas 102 and 20...

no. 2 example

[0053] This embodiment explains that in the wireless communication system according to the present invention, different polarizations are used between the downlink in which the wireless base station transmits signals to the wireless terminal device and the uplink in which the wireless terminal device transmits signals to the wireless base station, and the A situation where the polarization used in transmission and reception varies with the communication speed. Figure 4 is a block diagram illustrating configurations of a radio base station and a radio terminal device according to a second embodiment of the present invention. Additionally, for figure 1 Parts having the same functions in , are assigned the same reference numerals to omit their special descriptions.

[0054] Figure 4 The radio base station 301 in has a control section 302 , a reception section 303 and an antenna switching section 304 , while the radio terminal device 401 has a control section 402 , a transmiss...

no. 3 example

[0075] This embodiment illustrates the case where the polarization used in communication varies with the type of use in the wireless communication system according to the present invention. In particular, a case where a user uses two usage types, voice communication and data communication, will be described.

[0076] Figure 5 is a block diagram illustrating configurations of a wireless base station and a wireless terminal device according to a third embodiment of the present invention. Additionally, with figure 1 Parts with the same functions are assigned the same reference numerals to omit special explanations thereof.

[0077] Figure 5 The wireless base station 501 in has a control section 502, a transmission section 503, and an antenna switching section 504, performs communication using different polarization methods between communications having different transmission conditions such as voice communication and data communication, and in this respect, the difference A...

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Abstract

When the communication rate of a transmission signal is not less than a predetermined value, antenna switching section 104 outputs the transmission signal to antenna 102 for vertical polarization, while when the communication rate of a transmission signal is less than the predetermined value, outputting the transmission signal to antenna 103 for horizontal polarization. Antenna 103 transmits the transmission signal in horizontal polarization. Antenna 202 receives radio signals principally in vertical polarization. Antenna 203 receives radio signals principally in horizontal polarization. When the communication rate is not less than a predetermined value, antenna switching section 204 outputs a signal received in antenna 202 to receiving section 206, while when the communication rate is less than the predetermined value, outputting a signal received in antenna 203 to receiving section 206.

Description

technical field [0001] The present invention relates to a wireless communication device and a wireless communication method. Background technique [0002] In recent years, the number of wireless terminal devices such as cellular phones has increased, leading to an important issue of how to efficiently use limited frequency resources, and in order to solve this issue, many methods have been considered. [0003] Typical examples include providing a base station with multiple antennas to divide the area covered by the base station into multiple sectors, and an adaptive array antenna to reduce interference to wireless signals from different directions. [0004] And, in order to use frequencies efficiently, a method of switching polarization is considered. As a wireless communication system that switches polarization, a wireless access system is considered that switches the polarization used in communication between transmission and reception, thereby minimizing frequency resour...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/10H04B7/06H04B7/08H04B7/26H04L1/02
CPCH04B7/10H04L1/02H04B7/0802H04B7/0602
Inventor 官野谦太郎
Owner PANASONIC CORP
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