Control information transmission method and apparatus
A technology for controlling information and transmission methods, applied in the field of optical communication, can solve problems such as increasing the implementation cost of applying wavelength division multiplexing technology
Active Publication Date: 2017-12-29
HUAWEI TECH CO LTD
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Problems solved by technology
In order to mix the control information into the data channel as a low-frequency disturbance, it is necessary to add a mixer on the basis of the original HE hardware structure, and to obtain control information by TE, it is necessary to add a filter on the basis of the original TE hardware structure, that is, to realize In the control process of HE to TE, additional optoelectronic hardware needs to be added, thus increasing the implementation cost of applying wavelength division multiplexing technology in the metropolitan area network
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[0101] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0102] figure 1 It is a structural schematic diagram of the metropolitan area wavelength division system of the present invention, figure 2 It is a schematic structural diagram of the HE of the embodiment of the present invention, image 3 It is a schematic diagram of the structure of the TE of the embodiment of the present invention. Such as ...
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The embodiment of the invention provides a control information transmission method and apparatus. The control information transmission method comprises the following steps: a head end device sends a first downlink data frame to a tail end device, wherein the first downlink data frame comprises first downlink control information, the first downlink control information comprises wavelength tuning indicating information, and the wavelength tuning indicating information is used for indicating the tail end device to perform wavelength tuning on a laser. By adoption of the control information transmission method in the embodiment of the invention, no additional photoelectric hardware needs to be added to apply the wavelength division multiplexing technology in a metropolitan area network.
Description
technical field [0001] Embodiments of the present invention relate to optical communication technologies, and in particular to a method and device for transmitting control information. Background technique [0002] With the rapid development of network technologies such as the Internet, cloud computing, and 4G, information traffic is increasing exponentially. This trend requires the optical fiber network as the backbone of the backbone network to provide more available bandwidth. As an effective means to make full use of the existing optical fiber bandwidth, wavelength division multiplexing technology has been widely used in long-distance backbone networks. With the continuous development of science and technology, it is also necessary to apply wavelength division multiplexing technology in the field of metropolitan area network to provide more bandwidth. Specifically, when the wavelength division multiplexing technology is applied in the metropolitan area network, low-freq...
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IPC IPC(8): H04J14/02H04B10/572
CPCH04B10/572H04J14/0227
Inventor 董立民吴秋游
Owner HUAWEI TECH CO LTD