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Communication device, communication method, computer program, and communication system

A technology of communication device and communication mode, which is applied in the field of communication system, can solve the problems of throughput reduction, time change, etc., and achieve the effect of high-speed data communication

Inactive Publication Date: 2012-01-18
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, since the number of training frames that need to be exchanged between the transmitter and receiver is the same as the number of directional beam patterns, there is a time required for training that becomes an overhead, resulting in throughput reduced problem

Method used

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  • Communication device, communication method, computer program, and communication system
  • Communication device, communication method, computer program, and communication system
  • Communication device, communication method, computer program, and communication system

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Embodiment Construction

[0072] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0073] As already described in the Background Art section, a wireless communication system using millimeter waves can expand its communication range by using multiple transmitting and receiving antennas to form sharp antenna directivity (ie, beam-shaped antenna directivity). However, although it is possible to extend the communication distance by directing the beam in the direction of the position of the communication partner, in the stage where the beam is not made to have directivity (for example, when newly entering the network, or when the relative position with the communication partner is affected by the terminal's changed by movement, etc.), frame synchronization cannot be established, i.e., the arrival of a frame cannot even be detected.

[0074] In order to perform the training of the appropriate beam, one conceivable method is to send fr...

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Abstract

In addition to efficiently determining the antenna directivity between a transmitter and a receiver, the disclosed device, communication method and computer program efficiently feed back the determined results from the receiver to the transmitter. When transmission beam pattern order corresponding to various time slots in a signal for beam determination, or names representing the various transmission beam patterns are set communally through presetting or pre-negotiation between transmission and reception, the receiving side is able to predict reception power for each time slot based on shifts in the reception power of the beam determination signal, and also records and feeds back, in a notification signal, the transmission beam pattern name or time slot number that corresponds to the time slot realizing the maximum reception power.

Description

technical field [0001] The present invention relates to, for example, a communication device and a communication method, a computer program, and a communication system for performing wireless communication using millimeter waves, and more specifically, to extending millimeter waves by directing a beam of a directional antenna in a direction in which a communication partner is located. A communication device, a communication method, a computer program, and a communication system for a wave communication distance. Background technique [0002] Wireless communication called "millimeter wave" utilizes high-frequency electromagnetic waves to achieve higher communication speeds. The main uses of millimeter wave communication include short-distance wireless access communication, image transmission system, simple radio, and automobile anti-collision radar. In addition, currently, technical development regarding millimeter-wave communication for the purpose of promoting the use of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/10H04W16/28H04W84/12
CPCH04B7/063H04B7/0617H04B7/0695H04B7/086H04W72/046H04B17/318H04B17/327
Inventor 森冈裕一高野裕昭国弘卓志
Owner SONY CORP
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