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Two-way amplifying device and semi duplex communication system and method having said device

A half-duplex communication and two-way amplification technology, which is applied in the field of communication, can solve problems such as the inability to realize single-frequency two-way amplification.

Active Publication Date: 2009-11-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an amplifying device that can solve the problem that single-frequency bidirectional amplification cannot be realized in the prior art, and a communication system and method with the device

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  • Two-way amplifying device and semi duplex communication system and method having said device
  • Two-way amplifying device and semi duplex communication system and method having said device
  • Two-way amplifying device and semi duplex communication system and method having said device

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Embodiment Construction

[0014] Below, refer to Figure 2-4 The same-frequency half-duplex communication system according to the present invention is specifically described. The same-frequency half-duplex communication system includes a host 10 (20), a bidirectional amplifier 30 (40) and multiple terminals 50, and the multiple terminals 50 are connected to the bidirectional amplifier 30 (40) through a distribution network. The bidirectional amplifier 30 ( 40 ) is used to amplify the data signal sent by the host 10 ( 20 ) or the terminal 50 , and the host 10 ( 20 ) and the terminal 50 will not send data at the same time. The bidirectional amplifier 30 (40) has the function of judging the transmission direction, and can use an amplifier C to amplify the transmitted data signal according to the judged transmission direction.

[0015] like figure 2 As shown, the same-frequency half-duplex communication system according to the first embodiment of the present invention is described. In this embodiment, ...

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Abstract

The invention provides a bidirectional amplifying device and a half-duplex communication system and method with the device. The bidirectional amplifying device includes: an amplifier; a transmission direction judging device for judging the transmission direction of the data signal input to the bidirectional amplifying device, and sending a switch control signal according to the judged transmission direction; The control signal switches its state so that the amplifier amplifies the data signal in that direction of transmission. According to the present invention, by judging the transmission direction of the data signal, and using the amplifier to amplify the data signal transmitted in the transmission direction according to the determined transmission direction, the amplification of the data signal for bidirectional transmission at a single frequency point can be realized.

Description

technical field [0001] The invention relates to the communication field, in particular to a single-frequency bidirectional amplification device and a half-duplex communication system and method with the device. Background technique [0002] At present, bidirectional transmission in the coaxial cable system generally uses two separate frequency points for communication, that is, the frequency points used for the communication from the host device to the terminal device are different from the frequency points used for the communication between the terminal device and the host device. When the transmission distance is long or there are many assigned users, it is necessary to increase the extension amplifier. The current extension amplifier is set for the full-duplex communication mode of frequency division multiplexing, which cannot realize half-duplex communication at the same frequency point, resulting in the fact that the extension amplifier cannot be added to complete the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F3/62H04B7/26H04B7/15
CPCH03F3/62
Inventor 张恒峰
Owner HUAWEI TECH CO LTD