WO2011120422A1

WO2011120422A1 - Processing method and universal serial bus network card for passive optical network

Info

Publication number: WO2011120422A1
Application number: PCT/CN2011/072251
Authority: WO
Inventors: 钟建国; 刘武剑
Original assignee: 华为技术有限公司
Priority date: 2010-03-29
Filing date: 2011-03-29
Publication date: 2011-10-06
Also published as: CN201766683U

Abstract

The invention provides a Universal Serial Bus (USB) network card for a Passive Optical Network (PON). The provided network card includes an optical interface (20), an optical-to-electric conversion module (21), a PON MAC chip (23), a ROM (27), a RAM (29) and a USB interface (25); the optical interface (20) is coupled with the optical-to-electric conversion module (21); the optical-electric conversion module (21) is connected to the PON MAC chip (23); the PON MAC chip (23) is connected to the USB interface (25), the ROM (27) and the RAM (29) respectively; the USB interface (25) is used for connecting a Personal Computer (PC); the PON MAC chip (23) is used for: taking a handshake with the PC via the USB interface (25) after the network card is started, obtaining operation-required software packets from the PC, and storing the obtained software packets in the RAM (29); parsing data from the optical-to-electric conversion module (21), discarding unuseful data, packing useful data as data in a USB protocol format, and transmitting the packed data to the PC via the USB interface (25). The invention also provides a processing method of a USB network card for a PON, thereby resolving the problem of complex data conversion caused by existing products with large volume and plenty of interfaces, facilitating user's operation and improving user's experience.

Description

USB NIC for PON and processing method The present application claims priority to Chinese Patent Application entitled "P0N USB NIC" by the Chinese Patent Office on March 29, 2010, application number 201020149913. The entire contents of which are incorporated herein by reference.

The present invention relates to the field of communications technologies, and in particular, to a PON (Passive Optical Network) USB (Universal Serial BUS) network card and a processing method thereof.

BACKGROUND OF THE INVENTION Optical fiber networks are gradually becoming popular, especially in the development of P0N networks. Fibers gradually enter homes or offices, requiring a portable, simple device to connect computers and other devices into the P0N network.

The existing ONT (Optical Network Terminal) products are box-type products, and the interfaces include an Ethernet interface, a POTS (Plain Old Telephone Service), and a CATV (Community Antenna Television) interface. Large size, high power consumption, as shown in Figure 1, the internal contains P0N MAC (Media Access Control), optical module, network port, SDRAM (Synchronous Dynamic Random Access Memory) The power supply and other parts, the device realizes the conversion of the signal from the P0N protocol to the Ethernet protocol through the PON MAC chip or other processing device, and forwards the signal based on the MAC address or the IP address. However, the existing products are bulky and the interfaces are more complicated, resulting in more complicated data conversion. SUMMARY OF THE INVENTION An object of the present invention is to provide a USB network card of a PON and a processing method thereof, which solves the problem that the existing product is large in size and complicated in data conversion caused by multiple interfaces, and the USB network card has the characteristics of plug and play, and is flexible. It is convenient for users to use and improves the user experience.

A P0N USB network card provided by the embodiment of the present invention includes: an optical interface (20), a photoelectric conversion module (21), a P0N media access control MAC chip (23), a read only memory ROM (27), and a random access RAM (29). ) as well as USB interface (25);

The optical interface (20) is coupled to the photoelectric conversion module (21);

The photoelectric conversion module (21) is connected to the PON MAC chip (23);

The PON MAC chip (23) is respectively connected to the USB interface (25), the ROM (27) and the RAM (29);

The USB interface (25) is used to connect to a PC;

The PON MAC chip (23) is configured to: after the network card is started, perform a handshake with the PC through the USB interface (25), obtain a software package required to run the network card from the PC, and obtain the obtained software package. The software package is stored in the RAM (29); the data from the photoelectric conversion module (21) is parsed, the useless data is discarded, and the useful data is packaged into data in the USB protocol format, through the USB interface ( 25) transmitting the packaged data to the PC, and parsing data from the USB interface (25), converting data from the USB interface (25) based on the P0N uplink protocol, and based on the P0N uplink protocol The data is sent to the photoelectric conversion module (21).

The embodiment of the present invention further provides a P0N USB network card processing method: after the network card is started, receiving and parsing data sent by the photoelectric conversion module, and packaging the parsed data into data in a USB protocol format, through the USB The interface sends the packaged data to the PC; and receives and parses data from the USB interface, converts data from the USB interface according to a P0N uplink protocol, and sends data based on the P0N uplink protocol to the photoelectric conversion Module.

The USB network card provided in this embodiment is compact, compact between modules, and has the characteristics of plug and play, and is relatively flexible. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

1 is a schematic view showing the structure of a conventional network card;

2 is a schematic diagram of a structure of a network card according to an embodiment of the present invention;

3A is a flowchart of a method for processing a network card according to an embodiment of the present invention;

FIG. 3B is a flowchart of another method for processing a network card according to an embodiment of the present invention; The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them. Example. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

An embodiment of the present invention provides a PON USB network card. As shown in FIG. 2, the provided USB network card includes an optical interface 20, a photoelectric conversion module 21, a PON MAC chip 23, and a ROM (Read- Only Memory). 27, RAM (Random Access Memory) 29 and USB interface 25. The optical interface 20 is coupled to the photoelectric conversion module 21; the photoelectric conversion module 21 is connected to the PON MAC chip 23; and the PON MAC chip 23 is connected to the USB interface 25, the ROM 27, and the RAM 29, respectively.

The optical interface 20 is used for connecting an optical fiber, and is used for receiving a light-emitting signal, and can be designed as a snap-on square or a spiral circle.

USB interface 25 can be used to connect P (:. USB interface 25 can be plugged into the USB interface of the PC. After plugging into the USB interface of the PC, the power can be obtained through the USB interface of the PC.

R0M27 is used to save the basic booting procedure of the network card, and R0M27 can be a small-capacity ROM device, such as

EEPR0M (Electrical ly Erasable Programmable Read-Only Memory).

After the NIC is powered on, the basic startup program saved in R0M27 can be used to start the NIC.

The photoelectric conversion module 21 is configured to convert the downstream optical signal from the optical interface 20 into an electrical signal and send it to the P0N MAC chip 23; and convert the electrical signal from the PON MAC chip 23 into an optical signal, and the optical interface 20 is loaded into the optical fiber. Send on.

The PON MAC 23 is used to handshake with the PC through the USB interface 25 after the network card is started, obtain the software package required for running from the PC, and store the obtained software package in the RAM 29.

The PON MAC chip 23 is also used to parse the data from the photoelectric conversion module 21, discard the useless data, package the useful data into data in the USB protocol format, and transmit the packed data to the P (: via the USB interface 25). The basis for determining which data is useful here may be based on the MAC address or IP address in the data, and if the MAC address or IP address is consistent with the connected PC, it is determined to be useful data, otherwise, it is determined to be useless data. It can also be judged based on other basis, and is not limited herein.

In this embodiment, the driver of the network card needs to be saved on the PC. When the PC needs to send information to the network, The Ethernet data to be uploaded is packaged into data in USB format by a driver on the PC, and transmitted to the PON MAC chip 23 through the USB interface 25.

The P0N MAC chip 23 is also used to parse the data in the USB format from the USB interface 25, convert the data into a data format that satisfies the requirements of the P0N uplink protocol, and transmit the converted data to the photoelectric conversion module 21.

The PON MAC chip 23 is also used to buffer uplink data or downlink data to the PON MAC chip 23.

RAM29.

The USB network card provided in this embodiment can be applied to the link layer.

The USB network card provided in this embodiment is compact, and the modules are compact and meet the requirements of energy saving. In addition, the USB network card provided by the embodiment has the characteristics of plug and play, and is flexible.

As shown in FIG. 3A, an embodiment of the present invention provides a method for processing a USB network card of a PON. The method includes: Step S302: After the network card is started, the USB network card receives an optical signal sent by the passive optical network system, and the optical signal is sent. The signal is photoelectrically converted, and the converted data is parsed.

The USB network card determines useful data and useless data in the data transmitted by the passive network P0N system; discards the useless data, and packages the useful data into data in a USB protocol format.

Further, if the MAC address in the data sent by the passive network P0N system is related to the user terminal

If the MAC address is consistent, or the IP address in the data sent by the passive network P0N system is consistent with the IP address of the user terminal, it is determined to be useful data; otherwise, it is determined to be useless data.

Step S304: The USB network card packages the parsed data into data in a USB protocol format, and sends the packaged data to the user terminal.

The user terminal is a personal computer or the like, and the USB network card includes: an optical interface, a photoelectric conversion module,

PON MAC chip, ROM (Read-Only Memory), RAM (Random Access Memory), and USB interface. For details about the connection relationship, see the detailed description of Embodiment 1 and Figure 2. .

As shown in FIG. 3B, the embodiment of the present invention further provides a P0N USB network card processing method, where the method includes: Step S302', the USB network card receives and parses the user terminal to send data.

Step S304', the USB network card performs protocol conversion based on the P0N uplink protocol for the data sent by the user terminal, photoelectrically converts the converted data based on the P0N uplink protocol format, and sends the converted optical signal to the passive Optical network P0N system. The method described in FIG. 3A and FIG. 3B may be performed simultaneously on a USB network card of a P0N, or may be performed separately on different USB network cards. A person skilled in the art can understand that all or part of the steps of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium, such as ROM/RAM, magnetic. Disc or CD.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. The scope of protection of the present invention should be construed as the scope of protection of the present invention.

Claims

Rights request

A universal serial bus USB network card for a passive optical network PON, comprising: an optical interface (20), a photoelectric conversion module (21), a P0N media access control MAC chip (23), a read only memory ROM ( 27), random access memory RAM (29) and USB interface (25);

The photoelectric conversion module (21) is connected to the PON MAC chip (23);

The USB interface (25) is used to connect to a PC;

The PON MAC chip (23) is configured to: after the network card is started, perform a handshake with the PC through the USB interface (25), obtain a software package required to run the network card from the PC, and obtain the obtained software package. The software package is stored in the RAM (29); the data from the photoelectric conversion module (21) is parsed, the useless data is discarded, and the useful data is packaged into data in the USB protocol format through the USB interface ( 25) transmitting the packaged data to the PC, and parsing data from the USB interface (25), converting data from the USB interface (25) based on the P0N uplink protocol, and based on the P0N uplink protocol Data is sent to the photoelectric conversion module (21).

2. The network card of claim 1, wherein the optical interface (20) is a threaded circle.

3. The network card according to claim 1, wherein the optical interface (20) is a snap-in square.

4. The network card according to claim 1, wherein the basis for determining whether the data from the photoelectric conversion module (21) is useful is: if the MAC address in the data is consistent with the MAC address of the PC or in the data If the IP address matches the IP address of the PC, it is judged to be useful data, otherwise, it is determined to be useless data.

The network card according to claim 1 or 2 or 3 or 4, wherein the network card is applied to a link layer.

A method for processing a USB network card of a P0N, the method comprising:

After the network card is started, the optical signal sent by the passive optical network system is received, the optical signal is photoelectrically converted, the converted data is parsed, and the parsed data is packaged into data in a USB protocol format, and then packaged. Data is sent to the user terminal; and,

Receiving and parsing data sent by the user terminal, and sending data to the user terminal based on a P0N uplink protocol The conversion is performed, and the converted data based on the PON uplink protocol format is photoelectrically converted, and the converted optical signal is sent to the passive optical network P0N system.

The processing method according to claim 6, wherein the parsing the parsed data into data in a USB protocol format comprises:

Determining useful data and useless data in the data sent by the passive network P0N system;

Discarding the useless data, and packaging the useful data into data in a USB protocol format.

The processing method according to claim 7, wherein the determining the useful data and the useless data in the data sent by the passive network P0N system comprises:

If the MAC address in the data sent by the passive network PON system is consistent with the MAC address of the user terminal, or the IP address in the data sent by the passive network PON system is consistent with the IP address of the user terminal, Then it is determined to be useful data, otherwise it is judged to be useless data.