WO2012106890A1

WO2012106890A1 - Signal processing method and slave device

Info

Publication number: WO2012106890A1
Application number: PCT/CN2011/077151
Authority: WO
Inventors: 包盛花; 张帅
Original assignee: 华为技术有限公司
Priority date: 2011-07-14
Filing date: 2011-07-14
Publication date: 2012-08-16
Also published as: CN102301620B; CN102301620A

Abstract

Disclosed in the embodiments of the present invention are a signal processing method and a slave device. The method comprises: if the receiving fiber of the slave device is broken, the slave device generates a corresponding Loss Of Signal (LOS) signal, the receiving fiber being used for receiving a signal transmitted from a master device; the slave device sends at least three super-frames including the LOS signal to the master device, so as to enable the master device to send the LOS signal to a CPU. The embodiments in the present invention can provide a warning when the receiving fiber of the slave device is broken, thus improving the accuracy and reliability of warning for the break of the fiber.

Description

Signal processing method and slave device

Technical field

The embodiments of the present invention relate to communication technologies, and in particular, to a signal processing method and a slave device. Background technique

In the implementation of the Common Public Radio Interface (CPRI), if the receiving fiber of the slave device (the receiving fiber of the slave device is used to receive the signal sent by the master device, it may also be referred to as a master device ( Master ) The transmit fiber) is broken. After the slave device receives the fiber break, it immediately turns off the transmit channel. At this time, the master device detects the local frame out-of-synchronization information, and generates a Loss of Frame (LOF) signal with a value of 1 as the local LOF (L_LOF). The M language, L_LOF=1, is sent to the Central Processing Unit (CPU) for alerting the CPU.

However, the reason for the above L_LOF signal alarm is that the CPRI interface is abnormal, and the receiving fiber of the device is not broken, thereby reducing the accuracy and reliability of the fiber break alarm. Summary of the invention

The present invention provides a signal processing method and a slave device for improving the accuracy and reliability of a fiber break alarm.

An aspect of the present invention provides a signal processing method, including:

And if the receiving fiber of the device is broken, the slave device generates a corresponding LOS signal, where the receiving fiber is used to receive a signal transmitted by the master device;

The slave device transmits the LOS signal of at least three superframes to the master device to cause the master device to send the LOS signal to a CPU.

Another aspect of the present invention also provides a slave device, including:

a signal generating unit, configured to generate a corresponding LOS letter if the receiving fiber of the slave device is broken The receiving fiber is configured to receive a signal transmitted by the master device;

And a signal sending unit, configured to send the LOS signal of the at least three superframes to the master device, so that the master device sends the LOS signal to the CPU.

According to the foregoing technical solution, if the receiving fiber of the slave device is broken, the embodiment of the present invention sends the LOS signal of at least three super frames to the master device, so that the master device can send the LOS signal to the CPU. The alarm for receiving fiber breaks from the device is performed, thereby improving the accuracy and reliability of the fiber break alarm. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic flowchart of a signal processing method according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a slave device according to another embodiment of the present invention. detailed description

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 a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The term "and/or" in the embodiment of the present invention is merely an association relationship describing an association object, indicating that there may be three relationships, for example: A and/or B, which may indicate that: A exists separately, and A and B, there are three cases of B alone.

FIG. 1 is a schematic flowchart of a signal processing method according to an embodiment of the present invention, as shown in FIG. The signal processing method of this embodiment may include:

101. If the receiving fiber of the slave device is broken, the slave device generates a corresponding LOS signal, where the receiving fiber is used to receive a signal transmitted by the master device.

Specifically, when the receiving fiber of the slave device is broken, the slave device generates a signal loss of 1 (the Loss of Signal, LOS for short) signal, that is, the local LOS (L_LOS) signal, that is, L_LOS=1.

102. The slave device sends the LOS signal of at least three superframes to the master device, so that the master device sends the LOS signal to the CPU.

Among them, 150 super frames can form one frame.

It can be understood that the slave device can specifically transmit the above L0S signals of at least three superframes to the master device at a position in the superframe specified by the CPRI protocol, for example: #Z.130.0.

Specifically, the slave device does not immediately turn off the transmission channel, but transmits the above-mentioned L0S signal generated by the slave device of at least three superframes to the master device, that is, 1__1_03=1. After receiving the L0S signal (R_L0S=1), the master device reports the alarm to the CPU. The alarm corresponding to the L0S signal (R_L0S=1) is caused by the fiber breakage of the receiving fiber of the slave device.

Optionally, the slave device may specifically send the OLT signal of the at least three superframes to the master device by using the associated clock obtained from the receiving fiber before the receiving fiber is broken. For example, the slave device may specifically use the associated clock obtained from the receiving fiber as a reference clock before the receiving fiber is broken, and output a clock after the phase locked loop is lost, and send at least three super frames to the master device. The above L0S signal. The above-mentioned associated clock extracts the above-mentioned L0S signal in the transmission fiber and transmits it to the CPU. The master device can obtain the associated clock from the receiving fiber of the master device (the transmitting fiber of the slave device), and the related art is not mentioned here.

Correspondingly, the foregoing master device may further extract, by using the local clock of the master device, the clock signal to be converted by the clock domain (ie, from the associated clock domain to the local clock domain of the master device) After the signal, and sent to the CPU. The device transmits the above LOS signal of at least three superframes. Correspondingly, the master device may extract the LOS signal in the transmitting fiber by using a path clock acquired from the transmitting fiber of the slave device, and send the signal to the CPU. The master device can obtain the associated clock from the receiving fiber of the master device (the transmitting fiber of the slave device), and the related art is used, and details are not described herein.

In this embodiment, if the receiving fiber of the slave device is broken, the slave device does not immediately turn off the transmitting fiber, but sends the LOS signal of at least three super frames to the master device, so that the master device can send the foregoing to the CPU. The LOS signal is used to perform the alarm of receiving fiber breaks from the device, thereby improving the accuracy and reliability of the fiber break alarm.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

FIG. 2 is a schematic structural diagram of a slave device according to another embodiment of the present invention. As shown in FIG. 2, the slave device in this embodiment may include a signal generating unit 21 and a signal sending unit 22. The signal generating unit 21 is configured to generate a corresponding LOS signal if the receiving fiber of the slave device is broken, the receiving fiber is used to receive a signal transmitted by the master device, and the signal sending unit 22 is configured to send at least three to the master device. The LOS signal of the superframe is such that the master device transmits the LOS signal to the CPU.

The functions of the slave device in the embodiment corresponding to FIG. 1 above may be implemented by the slave device provided by the embodiment of the present invention.

Optionally, the signal sending unit 22 in this embodiment may specifically use the foregoing receiving fiber to be broken. The preceding clock obtained from the receiving fiber, transmitting the above three at least three superframes to the master device

LOS signal, such that: the above LOS signal in the fiber is sent and sent to the CPU; or

The master device uses the local clock of the master device to extract a signal after the LOS signal is converted by the clock domain (that is, from the associated clock domain to the local clock domain of the master device), and is sent to the CPU.

Optionally, the signal sending unit 22 in this embodiment may further use the local clock of the slave device to send the LOS signal of at least three super frames to the master device, so that the master device describes the LOS signal, and The CPU sends.

In this step, if the receiving fiber of the slave device is broken, the slave device does not immediately turn off the transmitting fiber, but sends a LOS signal of at least three super frames to the master device through the signal sending unit, so that the master device can be sent to the CPU. The LOS signal is sent to perform an alarm for receiving fiber breaks from the device, thereby improving the accuracy and reliability of the fiber break alarm.

The technical solution of the embodiment of the present invention can be applied to various scenarios of a master device and a slave device. The master device may be a baseband unit, and the slave device may be a radio frequency unit. The master device may also be a radio frequency unit, and the slave device may be a radio frequency unit. It can also be another radio unit. For the specific structure and function of the baseband unit as the master device and the radio frequency unit as the slave device provided by the embodiment of the present invention, refer to the description in the foregoing embodiment. Similarly, a radio frequency unit as the master device and another slave device For the specific structure and functional composition of a radio frequency unit, reference may also be made to the expression in the above embodiment.

The embodiment of the present invention further provides a base station, including the above-mentioned baseband unit as a master device and a radio frequency unit as a slave device, or a radio frequency unit as a master device and another radio frequency unit as a slave device. The clock is locked by the phase-locked loop by using the associated clock or the local clock as the reference clock. For the sake of convenience, the embodiment of the present invention is simply referred to as the associated clock or the local clock. Wherein, the associated clock is a clock extracted from the optical fiber that transmits the data.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The software functional units described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform portions of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), and a random access storage device. Any medium that can store program code, such as Random Access Memory (RAM), disk, or optical disk.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

A signal processing method, comprising:

If the receiving fiber of the device is broken, the slave device generates a corresponding signal loss LOS signal, and the receiving fiber is used to receive a signal transmitted by the master device;

The slave device transmits the LOS signal of at least three superframes to the master device to cause the master device to transmit the LOS signal to a central processing unit CPU.

2. The method of claim 1, wherein the transmitting, by the slave device, the LOS signal of the at least three superframes to the master device comprises:

The slave device transmits the LOS signal of at least three superframes to the master device by using a slave clock obtained from the receiving fiber before the receiving fiber is broken.

The method according to claim 2, wherein the transmitting, by the master device, the LOS signal to the CPU comprises: transmitting the LOS signal in the optical fiber, and sending the signal to the CPU; or

The master device extracts the foregoing in the transmitting optical fiber by using a local clock of the primary device

The LOS signal passes through the signal after the clock domain transformation and is sent to the CPU.

The method of claim 1, wherein the transmitting, by the slave device, the LOS signal of the at least three superframes to the master device comprises:

The slave device transmits the LOS signal of at least three superframes to the master device using the local clock of the slave device.

The method according to claim 4, wherein the sending, by the master device, the LOS signal to the CPU comprises: transmitting the LOS signal in the optical fiber, and transmitting the signal to the CPU.

The method according to any one of claims 1 to 5, wherein the master device is a baseband unit, and the slave device is a radio frequency unit; or The master device is a radio frequency unit, and the slave device is another radio frequency unit.

7. A slave device, characterized in that:

a signal generating unit, configured to generate a corresponding signal loss LOS signal if the receiving fiber of the slave device is broken, and the receiving fiber is used to receive a signal transmitted by the master device;

And a signaling unit, configured to send the LOS signal of the at least three superframes to the primary device, so that the primary device sends the LOS signal to a central processing unit CPU.

8. The slave device according to claim 7, wherein the signal sending unit is specifically configured to:

Transmitting the LOS signal of the at least three superframes to the master device by using the associated clock obtained from the receiving fiber before the receiving fiber is broken, so that the LOS signal in the transmitting fiber is sent to the CPU Send; or

The master device extracts a signal after the clock domain transformation of the LOS signal in the transmitting fiber by using a local clock of the master device, and sends the signal to the CPU.

9. The slave device according to claim 7, wherein the signal sending unit is specifically configured to:

And extracting, by the local clock of the slave device, the LOS signal in the transmitting fiber by transmitting the at least three superframes to the master device, and transmitting the signal to the CPU.

The slave device according to any one of claims 7 to 9, wherein the master device is a baseband unit, and the slave device is a radio frequency unit; or

The master device is a radio frequency unit, and the slave device is another radio frequency unit.