CN101697601A - Optical network unit capable of remotely upgrading hardware logic and remote upgrade method - Google Patents

Abstract

The invention relates to an optical network unit and discloses an optical network unit capable of remotely loading and upgrading a hardware logic, which comprises a CPU module and a hardware logic unit, wherein the local JTAG download interface of the hardware logic unit is connected with the CPU module; and the CUP module simulates the unit time sequence of the local JTAG download interface of the hardware logic unit, so that a local side can load the hardware logic onto the optical network unit. The invention also discloses a method for remotely upgrading the hardware logic of the optical network unit. When the optical network unit capable of remotely upgrading hardware logic and the remote upgrade method are applied, the hardware logic of the optical network unit can upgrade remotely on the local side, so the hardware function of the optical network unit is expanded conveniently and the service life of network equipment is prolonged.

Description

But a kind of optical network unit of remotely upgrading hardware logic and remote upgrade method

Technical field

The present invention relates to optical network unit (Optical Network Unit, the abbreviation in the optical communication technology field is ONU), specifically, relate to a kind of optical network unit that can long-range loading upgrading hardware logic, and the method for remotely upgrading hardware logic.

Background technology

Passive optical-fiber network (Passive Optical Network, abbreviation in the optical communication technology field is PON) the optical fiber access technology of this point-to-multipoint, because low, life-span of its cost is long, distance and bandwidth advantages of higher, (the Fiber-To-The-Home that becomes in recent years that Fiber to the home, abbreviation in the optical communication technology field is FTTH), the one preferred technique scheme of Fiber-To-The-Building (Fiber-To-The-Building, the abbreviation in the optical communication technology field is FTTB) etc.See also Fig. 1, be arranged on optical network unit (the Optical Network Unit of user side, abbreviation in the optical communication technology field is ONU), with the optical line terminal that is arranged on local side (Optical Line Terminal, abbreviation in the optical communication technology field is OLT), constituted the network access device of employing passive optical-fiber network (PON) technology; Conspicuous, the optical network unit here (ONU) had both served as the user side communication apparatus of passive optical-fiber network (PON), had also served as the hub (Hub) or the switch (Switch) of a plurality of end user computers; Along with the development of optical fiber communication technology, and the amplification day by day of user side network application demand, the function of optical network unit (ONU) also needs from strength to strength and its structure also becomes increasingly complex.

Along with the extensive use of optical network unit (ONU), the continuous increase of the complexity of hardware and concrete individual demand needs constantly upgrading PON network at user's request; At the beginning of the PON network design, its software consideration upgradability, but the upgradability of its hardware is often poor, need personnel to go to unpack to the scene, finish the updating operation of hardware by platform, like this, caused sizable difficulty for the maintenance and the upgrading of PON network, be unfavorable for that the large tracts of land of present PON equipment is promoted the use of, function is subjected to the limitation that hardware logic designs in earlier stage, and because the scope of application is extensive more, its institute is restricted also just big more, fails really the due flexibility of hardware logic to be given full play of, therefore, optical network unit needs a kind of upgrade method of hardware logic easily, satisfies the constantly various hardware capabilitys of upgrading of continuous needs.

Now, common hardware logic has CPLD (Complex Programmable LogicDevice) or FPGA (Field Programmable Gate Array).Owing in optical network unit, use CPLD more, thus in the present patent application file with CPLD acute pyogenic infection of finger tip hardware logic.

CPLD is according to its needs and the voluntarily digital integrated circuit of constitutive logic function of a kind of user; Its basic design method is, by the integrated platform that develops software, with methods such as schematic diagram, hardware description languages, generate corresponding file destination, by download cable code is sent in the objective chip then, realize designed digital system, that is, objective chip has obtained newly-designed hardware capability.Obvious, in the PON network, the staff to on-the-spot updating operation of removing to carry out CPLD, particularly for a large-scale PON network, is a very hard work often if desired.

Summary of the invention

Technical problem to be solved by this invention is, but a kind of optical network unit of remotely upgrading hardware logic is provided; When the hardware capability of needs upgradings optical network unit, can carry out the updating operation of hardware logic to this optical network unit long-range, and when optical network unit was supported batch upgrade, hardware logic also can be realized the updating operation of batch eaily.

But the optical network unit of a kind of remotely upgrading hardware logic of the present invention is achieved in that

But a kind of optical network unit of remotely upgrading hardware logic, comprised the CPU module, the hardware logic unit, it is characterized in that, the local JTAG download interface of described hardware logic unit is connected with described CPU module, the unit sequential of the local JTAG download interface of described CPU module simulation hardware logic unit makes the local side can be to optical network unit loaded with hardware logic.

Preferred implementation is that described hardware logic unit is CPLD or FPGA.

The method of remote upgrade optical network unit hardware logic of the present invention is achieved in that

A kind of method of remote upgrade optical network unit hardware logic is characterized in that, has comprised following steps:

(1) development platform of use hardware logic unit, compiling generates the hardware logic that is applicable to CPU module loading file format;

(2) use the order line of optical network unit CPU module, and CPU module software remote upgrade passage, the more fresh code of hardware logic is loaded on optical network unit from local side;

(3) the unit sequential of the local JTAG download interface of the CPU module simulation hardware logic unit of optical network unit, with the more fresh code of hardware logic local JTAG download interface, with the memory block of hardware logic code update to the hardware logic unit by the analog hardware logical block.

But implement the optical network unit and the remote upgrade method of a kind of remotely upgrading hardware logic of the present invention, equipment manufacturers can be according to the ever-increasing new demand of operator, can improve and renewal at the long-range hardware capability of local side, improve the autgmentability of equipment optical network unit; And owing to realized long-range loading upgrading, make that the maintenance of PON network is convenient, can carry out batch upgrade, efficient improves, and the influence that Operation Network and user are used reduces greatly.

Description of drawings

Fig. 1 is to use optical network unit (ONU) to form the schematic diagram of PON network;

Fig. 2 is the CPU module of optical network unit of the present invention and system's connection diagram of hardware logic unit;

Fig. 3 is the schematic flow sheet of remote upgrade optical network unit hardware logic method of the present invention.

Embodiment

Below, but in conjunction with the accompanying drawings the optical network unit and the remote upgrade method of a kind of remotely upgrading hardware logic of the present invention is described in further detail.

As shown in Figure 2, optical network unit that can long-range loading upgrading hardware logic of the present invention, comprised the CPU module, hardware logic unit (among Fig. 2 be example with CPLD), and other functional unit block of optical network unit (indicating among the figure), the data channel that is connected with local side is arranged, user interface section is arranged, use the unit of hardware logic function to belong to comparatively complicated unit at needs, containing Switching Module provides user interface, with ascender interface is arranged, Fig. 1 is seen in signal.In this kind optical network unit, the JTAG download interface with the hardware logic unit in advance when needing design hardware is connected to the CPU module; As shown in Figure 3, when because various when needing the upgrading hardware logic, should at first use the compiling of relevant hardware logic compilation tool to generate the hardware logic that is used for CPU loading upgrading file format; Then, PC operates at local side OLT machine room webmaster, and the more fresh code of hardware logic is transferred to the optical network unit that needs the upgrading hardware logic from local side; Accordingly, optical network unit receives the row cache of going forward side by side with the code file that local side sends, the download interface sequential of the interface analog hardware logical block that the CPU by optical network unit is connected with the hardware logic unit is downloaded to the hardware logic code file memory block of hardware logic unit by CPU; And, new hardware logic code is moved on optical network unit by restarting optical network unit automatically, that is, the optical network unit of this moment will be supported new hardware capability.Similar therewith, utilize the simply batch upgrade characteristic of optical network unit CPU, can realize the batch upgrade of optical network unit hardware logic, make the flexibility of optical network unit hardware capability improve greatly, and it is very convenient, improve the adaptability of the network equipment, promoted the extensive use of optical network unit to a greater degree.

In a word, above-mentioned described execution mode is not represented all implementations of the present invention; Above examples of implementation are not to concrete qualification of the present invention, and all and the similar technical scheme of the present invention all should belong to protection scope of the present invention.

Claims (3)

1. but the optical network unit of a remotely upgrading hardware logic, comprised the CPU module, the hardware logic unit, it is characterized in that, the local JTAG download interface of described hardware logic unit is connected with described CPU module, the unit sequential of the local JTAG download interface of described CPU module simulation hardware logic unit makes the local side can be to optical network unit loaded with hardware logic.

2. but the optical network unit of a kind of remotely upgrading hardware logic according to claim 1 is characterized in that, described hardware logic unit is CPLD or FPGA.

3. but the method for a remote upgrade optical network unit hardware logic is characterized in that, has comprised following steps:

(1) development platform of use hardware logic unit, compiling generates the hardware logic that is applicable to CPU module loading file format;

(2) use the order line of optical network unit CPU module, and CPU module software remote upgrade passage, the more fresh code of hardware logic is loaded on optical network unit from local side;

(3) the unit sequential of the local JTAG download interface of the CPU module simulation hardware logic unit of optical network unit, with the more fresh code of hardware logic local JTAG download interface, with the memory block of hardware logic code update to the hardware logic unit by the analog hardware logical block.

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