[summary of the invention]
For this reason, purpose of the present invention will overcome above-mentioned deficiency exactly, and a kind of self-cure monitoring method of digital RF far-drawing system is provided.
In addition, another object of the present invention is to provide to device that should method.
For realizing this purpose, the present invention adopts following technical scheme:
The self-cure monitoring method of digital RF far-drawing system of the present invention, realization resets to this functional module to the monitoring of each functional module in the Base Band Unit of digital RF far-drawing system and the Remote Radio Unit and when the abnormal state of functional module, carries out the operation of following steps by its monitoring host computer separately in Base Band Unit and Remote Radio Unit:
At least one monitoring slave in monitoring host computer scheduling uplink and/or the down link is monitored the running status of coupled functional module;
When the running status of this functional module was unusual, the monitoring slave sent at least one reset signal to this functional module, and this functional module resets according to this reset signal.
In the duration that described monitoring slave is being preset, do not receive the polling data bag of monitoring host computer, or the task deadlock of in default duration, self carrying out, reset self to restart.
Described functional module can be the simulation frequency-variable module, when the monitoring slave that is attached thereto monitors the local vibration source losing lock of this simulation frequency-variable module, sends a signal to this simulation frequency-variable module and local vibration source is reinitialized and be configured to again and finish.
Described functional module can be Base-Band Processing and receiver module or Base-Band Processing and sending module, the monitoring slave that is attached thereto monitors each light and receives submodule and light and send out the light mouth signal of submodule when asynchronous, or monitor the chip operation that respectively carries out base band signal process in Base-Band Processing and receiver module or Base-Band Processing and the sending module when unusual, send the baseband processing module of this Base-Band Processing of reseting signal reset and receiver module or Base-Band Processing and sending module by corresponding monitoring slave.
Described functional module can be Base-Band Processing and receiver module or Base-Band Processing and sending module, the monitoring slave that is attached thereto monitors the data of depositing module that wherein are used for storage when being rewritten unusually, sends the module of depositing that signal resets and reconfigures this Base-Band Processing and receiver module or Base-Band Processing and sending module by corresponding monitoring host computer.
When the light receipts submodule of monitoring Base-Band Processing and receiver module or Base-Band Processing and sending module and light were sent out submodule, this was monitored slave accordingly and is judging that all light receipts submodules and light sends out just the reset when asynchronous baseband processing module of Base-Band Processing and receiver module or Base-Band Processing and sending module of submodule.
Monitoring host computer and the monitoring host computer in the Base Band Unit in the Remote Radio Unit interconnect with mutual monitoring.
When any one monitoring host computer can't receive the poll bag of the monitoring host computer that is connected with self in default duration, self is resetted restart, restart the back, each connected monitoring slave is resetted as if still receiving described poll bag.
When the protocol stack of any one monitoring host computer can't receive the communication data of the monitoring slave that is attached thereto in default duration, monitoring host computer self resetted restart.
Any one monitoring host computer monitors when communication task is locked can't normally carry out in default duration, resets and self restarts.
The self-cure monitoring device of digital RF far-drawing system of the present invention acts on the Base Band Unit of digital RF far-drawing system and at least one functional module in the Remote Radio Unit, comprising:
Monitoring host computer is arranged at respectively in Base Band Unit and the Remote Radio Unit;
The monitoring slave electrically connects with the functional module of Base Band Unit and Remote Radio Unit, and the monitoring slave connects one to one with functional module, in addition, the monitoring slave also with its under monitoring host computer electric connection in the unit;
Whether monitoring slave monitoring function module or the running status of self be unusual, signal reset corresponding functional modules or self are occurring sending when unusual;
The running status of monitoring host computer monitoring self and whether unusual with being connected of monitoring slave resets self when appearance is unusual.
Two monitoring host computers of monitoring host computer in Base Band Unit and the Remote Radio Unit are by Optical Fiber Transmission, master-salve station communication interaction data.
Be provided with the master-salve station communication chip in the monitoring host computer, be used for resetting and restarting in communicate by letter with base station unit order that monitoring host computer self occurs receiving when unusual of Remote Radio Unit.
Be provided with principal and subordinate's machine communication chip in the monitoring host computer, be used for resetting and restarting in communicate by letter with the monitoring slave that respectively is attached thereto the order that monitoring host computer self occurs receiving when unusual of this monitoring host computer.
Compared with prior art, the present invention possesses following advantage: at first, the present invention utilizes the self-healing method of supervisory control system to ensure the data interaction between each monitoring host computer and uplink and downlink link each functional module in the digital RF far-drawing system, ensure data interaction and communications between Base Band Unit and the Remote Radio Unit, improved the reliabilty and availability of native system; Secondly, the system of monitoring self-healing will reduce operating cost of operator.
[embodiment]
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing.
Among Fig. 1, the self-cure monitoring device of digital RF far-drawing system of the present invention comprises: monitoring host computer 015, monitoring host computer 115, monitoring slave 011, monitoring slave 012, monitoring slave 013, monitoring slave 014, monitoring slave 111, monitoring slave 112, monitoring slave 113, monitoring slave 114, monitoring slave 011 and number and the corresponding functional module of monitoring slave.
Described functional module, as depicted in figs. 1 and 2, in digital RF far-drawing system, specifically can be being in simulation down conversion module 001, Base-Band Processing and sending module 002 in the Base Band Unit and being in Base-Band Processing and receiver module 102 in the Remote Radio Unit, simulating up-conversion module 101 in the down link.And in up link, also can be and the Base-Band Processing of analog down module 104, Base-Band Processing and the sending module 103 of the corresponding Remote Radio Unit end of down link and Base Band Unit end and receiver module 003, simulation up-conversion module 004 functional part.
Well-known, after the downstream signal of Base Band Unit end enters down link, at first be downconverted into analog intermediate frequency signal by analog down module 001, after entering Base-Band Processing and sending module 002, by its inner analog to digital conversion module 0021 analog intermediate frequency signal is transformed to digital intermediate frequency signal, after being transformed to baseband digital signal by its Digital Down Converter Module 0022 again, after finishing Data Format Transform and be packaged into suitable frame by 0023 pair of signal of its baseband processing module, send out submodule 0024 by its light and be converted to light signal and be sent in the Remote Radio Unit by optical fiber.
In the Base-Band Processing of Remote Radio Unit and the receiver module 102, its light is received submodule 1024 and is received behind the downstream signal that optical fiber transmits, being converted to the signal of telecommunication enters 1023 pairs of downstream signals of its baseband processing module and finishes protocol conversion and be reduced into baseband signal, be reduced into digital intermediate frequency signal through its Digital Up Convert module 1022, be reduced to analog if signal through its digital to analog conversion module 1021 again, after after simulation up-conversion module 101 is reduced into radiofrequency signal, through a power amplifier module 106 amplify and duplexer after transfer to antenna-feedback system and finish covering.
Baseband processing module 0023 in described Base-Band Processing and the sending module 002 electrically connects with depositing module 0025, deposits so that finish data; Baseband processing module 1023 in described Base-Band Processing and the receiver module 102 electrically connects with depositing module 1025, deposits so that finish data.
Have the structure symmetrical with down link in the described up link, different is that because lower to the desired power of upward signal, 105 pairs of upward signals of therefore general employing low noise amplification module amplify but not power amplifier module.
In conjunction with Fig. 1 and Fig. 2, self-cure monitoring device of the present invention is present in Base Band Unit and the Remote Radio Unit simultaneously.
In the Base Band Unit, the analog down module 001 of described down link electrically connects with monitoring slave 011, baseband processing module 0023 in Base-Band Processing and the sending module 002 and light are sent out submodule 0024 and are electrically connected with monitoring slave 012, and baseband processing module 0033 in the Base-Band Processing of up link and the receiver module 003 and light are received submodule 0034 and 013 electric connection of monitoring slave, and follow-up simulation up-conversion module 004 also electrically connects with monitoring slave 014.
In like manner, in Remote Radio Unit, the analog down module 104 of described up link electrically connects with monitoring slave 114, baseband processing module 1033 in Base-Band Processing and the sending module 103 and light are sent out submodule 1034 and are electrically connected with monitoring slave 113, and baseband processing module 1023 in the Base-Band Processing of down link and the receiver module 102 and light are received submodule 1024 and 112 electric connections of monitoring slave, and subsequent simulation up-conversion module 101 electrically connects with monitoring slave 111.
Wherein, baseband processing module 0023, light receipts submodule 0024, baseband processing module 0033, light are sent out submodule 0034 and can be used same monitoring slave, and baseband processing module 1023, light receipts submodule 1024, baseband processing module 1033, light are sent out submodule 1034 and can be used same monitoring slave.
Monitoring host computer 015 in the Base Band Unit and the monitoring slave 011 in the Base Band Unit, monitoring slave 012, monitoring slave 013, monitoring slave 014 electrically connect, in like manner, the monitoring slave 111 in monitoring host computer in the Remote Radio Unit 115 and the Remote Radio Unit, monitoring slave 112, monitoring slave 113, monitoring slave 114 electrically connect.
Monitoring host computer 015 and monitoring host computer 115 are equipped with the master-salve station communication chip, with principal and subordinate's machine communication chip, the master-salve station communication chip be used to start and configurating base station unit monitors main frame 015 and Remote Radio Unit monitoring host computer 115 between be connected, principal and subordinate's machine communication chip of monitoring host computer 015 is used for starting and configuration monitoring main frame 015 and monitoring slave 011, monitoring slave 012, monitoring slave 013, connection between the monitoring slave 014, principal and subordinate's machine communication chip of monitoring host computer 115 are used for starting and configuration monitoring main frame 115 and monitoring slave 111, monitoring slave 112, monitoring slave 113, connection between the monitoring slave 114.
Utilize self-cure monitoring device of the present invention, can finish self-healing monitoring, below incite somebody to action the operation principle of this device in detail digital RF far-drawing system.
The self-cure monitoring device is started working after digital RF far-drawing system powers on.By the monitoring host computer 115 of the monitoring host computer 015 of Base Band Unit, extension unit, the monitoring slave 012, the monitoring slave 013 of monitoring slave 014, Base-Band Processing and receiver module 003 of simulation up-conversion module 004 in the Base Band Unit up link of monitoring slave 011, Base-Band Processing and sending module 002 of analog down module 001 in the Base Band Unit down link; The monitoring slave 113 of the monitoring slave 112 of monitoring slave 111, Base-Band Processing and the receiver module 102 of the simulation up-conversion module 101 in the Remote Radio Unit down link, monitoring slave 114, Base-Band Processing and the sending module 103 of the analog down module 104 in the up link is carried out jointly.Mainly finish self-healing and two kinds of work of system-level self-healing of module level.
The self-healing of described module level is meant when appearance is unusual, system is only to each described functional module, promptly to analog down module 001, Base-Band Processing and sending module 002, Base-Band Processing and receiver module 003, simulation up-conversion module 004, simulation up-conversion module 101, Base-Band Processing and receiver module 102, Base-Band Processing and sending module 103, analog down module 104 is recovered, show and respectively monitor slave the monitoring of each corresponding functional modules and the control that resets, promptly monitor 001 monitoring and the control that resets of 011 pair of analog down module of slave, monitoring 012 pair of Base-Band Processing of slave and sending module 002 monitoring and the control that resets, monitoring 013 pair of Base-Band Processing of slave and receiver module 003 monitoring and the control that resets, 004 monitoring and the control that resets of 014 pair of simulation of monitoring slave up-conversion module, 101 monitoring and the controls that reset of 111 pairs of simulations of monitoring slave up-conversion module, monitoring 112 pairs of Base-Band Processing of slave and receiver module 102 monitoring and the controls that reset, monitoring 113 pairs of Base-Band Processing of slave and sending module 103 monitoring and the controls that reset, 104 monitoring and the controls that reset of 114 pairs of analog down modules of monitoring slave; Described system-level self-healing is meant and occurs when unusual, between monitoring host computer 015 and the monitoring host computer 115, between monitoring host computer 015 and monitoring slave 011, monitoring slave 012, monitoring slave 013, the monitoring slave 014 and monitoring host computer 115 with monitoring slave 111, monitoring slave 112, monitor slave 113, monitor between the slave 114 and recover step by step.
The self-healing process of described module level comprises the self-healing process that Base Band Unit monitoring host computer 015 is finished self, the self-healing process that the monitoring host computer 115 of Remote Radio Unit is finished self, the self-healing process of analog down module 001 in the Base Band Unit, the self-healing process of simulation up-conversion module 004 in the Base Band Unit, the self-healing process of Base-Band Processing and sending module 002 in the Base Band Unit, the self-healing process of Base-Band Processing and receiver module 003 in the Base Band Unit, the self-healing process of simulation up-conversion module 101 in the Remote Radio Unit, the self-healing process of analog down module 104 in the Remote Radio Unit, the self-healing process of Base-Band Processing and receiver module 102 in the Remote Radio Unit, the self-healing process of Base-Band Processing and sending module 103 in the Remote Radio Unit.
In the self-healing process of the monitoring host computer 015 of described Base Band Unit, the Remote Radio Unit self-healing process of monitoring host computer 115 both use principle of uniformity, thereby can belong to monitoring mainboard main frame self-healing process.
The self-healing process of Base-Band Processing and sending module 103 etc. in the self-healing process of Base-Band Processing and receiver module 102, the Remote Radio Unit up link in the self-healing process of Base-Band Processing and receiver module 003, the Remote Radio Unit down link in the self-healing process of Base-Band Processing and sending module 002, the Base Band Unit up link belongs to digital module numeral slave self-healing process in the described Base Band Unit down link;
The self-healing process of analog down module 104 etc. in the self-healing process of simulation up-conversion module 101, the Remote Radio Unit up link in the self-healing process of simulation up-conversion module 004, the Remote Radio Unit down link in the self-healing process of analog down module 001, the Base Band Unit up link belongs to analog module radio frequency slave self-healing process in the described Base Band Unit down link.
Described monitoring mainboard main frame self-healing process comprises communication self-healing process and task self-healing process; Described communication self-healing process comprises protocol stack self-healing process and drives the self-healing process.
Described protocol stack self-healing process is meant that reset control main frame 015 restarts and self-healing with realization with monitoring host computer 115 when the monitoring host computer 015 of Base Band Unit is not received the communication data of any communication port with the protocol stack of the monitoring host computer 115 of Remote Radio Unit in default time span;
The monitoring slave 011 of analog down module 001 in the monitoring host computer 015 of described Base Band Unit and the down link, the monitoring slave 012 of Base-Band Processing and sending module 002, the monitoring slave 014 of simulation up-conversion module 004 in the up link, when Base-Band Processing all can't be communicated by letter in default time span with monitoring slave 013 grade of receiver module 003, Base Band Unit monitoring host computer 015 starts the self-healing process that drives, detailed process is: at first in the regulation duration, Base Band Unit monitoring host computer 015 resets at regular intervals and is used for principal and subordinate's machine communication chip in it, and can test overcome fault; If the communication between this monitoring host computer 015 and monitoring slave 011, monitoring slave 012, monitoring slave 013, the monitoring slave 014 at the appointed time still can't be normal, then reset control main frame itself.
The monitoring slave 111 of simulation up-conversion module 101 in monitoring host computer 115 and the down link in the described Remote Radio Unit, the monitoring slave 112 of Base-Band Processing and receiver module 102, the monitoring slave 114 of analog down simulation 104 in the up link, when Base-Band Processing all can't be communicated by letter at the appointed time with the monitoring slave 113 of sending module 103, Remote Radio Unit monitoring host computer 115 starts the self-healing process that drives, detailed process is: at first at the appointed time, the Remote Radio Unit monitoring host computer 115 principal and subordinate's machine communication chip in it that resets at regular intervals, can test overcome fault; If the communication between this monitoring host computer and monitoring slave 111, monitoring slave 112, monitoring slave 113, the monitoring slave 114 at the appointed time still can't be normal at this moment, then reset control main frame 115 is own;
It is locked and can't normally move the time that described task self-healing process is meant that Base Band Unit monitoring host computer 015 and Remote Radio Unit monitoring host computer 115 monitor in official hour communication task, reset control main frame 015 and monitoring host computer 115 self and the self-healing process that restarts;
Described digital slave self-healing process comprises task self-healing process, serial ports self-healing process, the asynchronous self-healing process of light mouth, signal processing chip operation irregularity self-healing process, deposits module configuration data abnormal change self-healing process;
It is locked and can't normally carry out that described digital slave task self-healing process is meant that the monitoring slave 113 of Base-Band Processing and sending module 103 in the monitoring slave 112, up link of Base-Band Processing and receiver module 102 in the monitoring slave 013, Remote Radio Unit down link of Base-Band Processing and receiver module 003 in the monitoring slave 012, up link of Base-Band Processing and sending module 002 in the Base Band Unit down link etc. monitors in official hour length communication task, and this corresponding monitoring slave and restart the process that realizes self-healing resets.
Described digital slave serial ports self-healing process is meant that the monitoring slave 013 of Base-Band Processing and receiver module 003 in the monitoring slave 012 of Base-Band Processing and sending module 002 in the Base Band Unit down link or the Base Band Unit up link does not receive the poll bag of Base Band Unit monitoring host computer 015 for a long time, and in the Remote Radio Unit down link in the monitoring slave 112 of Base-Band Processing and receiver module 102 or the Remote Radio Unit up link monitoring slave 113 of Base-Band Processing and sending module 103 do not receive the poll bag of Remote Radio Unit monitoring host computer 115 for a long time, the monitoring slave 012 of Base-Band Processing and sending module 002 in this moment Base Band Unit, the monitoring slave 013 of Base-Band Processing and receiver module 003 in the Base Band Unit up link, the monitoring slave 112 of Base-Band Processing and receiver module 102 in the Remote Radio Unit down link, and the process that the monitoring slave 113 of Base-Band Processing and sending module 103 resets and restarts in the Remote Radio Unit up link.
The asynchronous self-healing process of the light mouth of described digital slave is meant when all insert light and send out submodule 0024, light and receive light in submodule 0034 and the Remote Radio Unit and send out submodule 1034, light and receive the self-healing process that the light mouth of submodule 1024 is carried out when all asynchronous in the Base Band Unit.The asynchronous self-healing process of described light mouth comprises the steps: at first to judge whether each light mouth is all asynchronous, if as long as one of them light mouth is synchronous, think that then optical interface link is normal; Next is that to be judged to be all light mouths asynchronous, then carrying out monitoring slave 012 by the Base-Band Processing of Base Band Unit down link and sending module 002 sends signal and reloads and dispose its baseband processing module 0023, the monitoring slave 013 of the Base-Band Processing of Base Band Unit up link and receiver module 003 resends signal and loads and dispose its baseband processing module 0033, the monitoring slave 112 transmission signals of the Base-Band Processing of Remote Radio Unit down link and receiver module 102 are reloaded and are disposed its baseband processing module 1023, the monitoring slave 113 of the Base-Band Processing of Remote Radio Unit up link and sending module 103 resends signal and loads and dispose its baseband processing module 1033, carry out at regular intervals, carry out continuously 3 times; And then every the certain hour judgement, if this time mouth is not also not synchronously, each baseband processing module that then resets at regular intervals, continuous reset 3 times.
The signal processing chip operation irregularity self-healing process of described digital slave is meant that the chip operation of baseband processing module 0023 re-powers its chip of configuration by its corresponding monitoring slave 012 unusually, the chip operation of baseband processing module 0033 re-powers its chip of configuration by its corresponding monitoring slave 013 unusually, the chip operation of baseband processing module 1023 re-powers its chip of configuration by its corresponding monitoring slave 112 unusually, the chip operation of baseband processing module 1033 re-powers its chip of configuration by its corresponding monitoring slave 113 unusually.
The module configuration data abnormal change self-healing process of depositing of described digital slave is meant that the chip operation of depositing module 0025 and depositing in the module 0035 is re-powered its chip of configuration, deposited module 1025 and the chip operation deposited in the module 1035 re-powers its chip of configuration by the monitoring host computer 115 of extension unit unusually by the corresponding monitoring host computer 015 of Base Band Unit unusually.
Described analog module radio frequency slave self-healing process comprises task self-healing process, serial ports self-healing process, radio frequency losing lock self-healing process;
It is locked and can't normally move that described radio frequency slave task self-healing process is meant that the monitoring slave 114 of analog down module 104 of monitoring slave 111, up link of monitoring slave 014, Remote Radio Unit down link simulation up-conversion module 101 of simulation up-conversion module 004 of monitoring slave 011, the up link of the analog down module 001 of Base Band Unit down link monitors in official hour communication task, and reset control slave 011, monitoring slave 014, monitoring slave 111, monitoring slave 114 self restart and realize the process of self-healing.
The serial ports self-healing process of described radio frequency slave is meant that the monitoring slave 014 of the simulation up-conversion module 004 of the monitoring slave 011 of analog down module 001 of Base Band Unit down link or up link does not receive the poll bag of Base Band Unit monitoring host computer 015 for a long time, and the monitoring slave 114 of the analog down module 104 of the monitoring slave 111 of the simulation up-conversion module 101 of Remote Radio Unit down link or up link do not receive the poll bag of Remote Radio Unit monitoring host computer 115 for a long time, this moment each variable frequency synthesiser monitoring slave 011, monitoring slave 014, monitoring slave 111, monitoring slave 114 softwares reinitialize operation and the self-healing process of realization.
When the radio frequency losing lock self-healing process of described radio frequency slave is meant the local vibration source losing lock of respectively simulating frequency-variable module, send a signal to corresponding simulation frequency-variable module to reset by corresponding monitoring slave, the self-healing process that reinitializes and dispose and finish, be the local vibration source losing lock of analog down module 001, the local vibration source that is sent a signal to analog down module 001 by monitoring slave 012 reinitializes and disposes; The local vibration source losing lock of simulation up-conversion module 004, the local vibration source that is sent a signal to analog down module 004 by monitoring slave 014 reinitializes and disposes; The local vibration source losing lock of analog down module 104, the local vibration source that is sent a signal to analog down module 104 by monitoring slave 114 reinitializes and disposes; The local vibration source losing lock of simulation up-conversion module 101, the local vibration source that is sent a signal to analog down module 101 by monitoring slave 111 reinitializes and disposes;
Described system-level self-healing comprises self-healing process that ensures Base Band Unit and all Remote Radio Unit proper communications and the self-healing process that ensures arbitrary Remote Radio Unit and Base Band Unit proper communication; Described guarantee Base Band Unit and the self-healing process of all Remote Radio Unit proper communications comprise the master-salve station communication abnormality self-healing process of communicating by letter the Base Band Unit master-salve station self-healing process, the descending digital module of Base Band Unit causing unusually; The arbitrary Remote Radio Unit of described guarantee and the self-healing process of Base Band Unit proper communication are meant the Remote Radio Unit master-salve station self-healing process of communicating by letter.
Described guarantee Base Band Unit may further comprise the steps with the self-healing of all Remote Radio Unit proper communications: when Base Band Unit monitoring host computer 015 all can't be communicated by letter 5 minutes (in the stipulated time) with the monitoring host computer 115 of all Remote Radio Unit, and the Base Band Unit monitoring host computer 015 master-salve station communication chip that is used for master-salve station communication reset drives in it that can reset; This moment be if still can't communicate by letter in 10 minutes, then Base Band Unit monitoring host computer 015 communication task that resets and carrying out; Communicating by letter with the master-salve station of the monitoring host computer 115 of all Remote Radio Unit as if Base Band Unit monitoring host computer 015 in 20 minutes still can't be normal, and Base Band Unit monitoring host computer 015 makes it to reset to the monitoring slave 013 transmission reset signal of monitoring slave 012, Base-Band Processing and the receiver module 003 of Base-Band Processing that is attached thereto and sending module 002; If still can't communicate by letter in 30 minutes, Base Band Unit monitoring host computer 015 then resets.
Described Remote Radio Unit master-salve station communication self-healing process is meant the self-healing that starts from horizontal reset when Remote Radio Unit monitoring host computer 115 does not receive the data of Base Band Unit monitoring host computer 015 transmission at the appointed time, may further comprise the steps: when Remote Radio Unit monitoring host computer 115 when certain hour does not receive the data that Base Band Unit monitoring host computer 015 sends, Remote Radio Unit monitoring host computer 115 can reset at interval at regular intervals and be used for the master-salve station communication chip of master-salve station communication reset drives to realize resetting startup on the Remote Radio Unit monitoring host computer 115; If still can't communicate by letter this moment, then reset Remote Radio Unit monitoring host computer 115 and start self-healing.
To sum up, self-cure monitoring devices and methods therefor provided by the invention can ensure working properlyization of digital RF far-drawing system, achieves intelligentized self-regeneration process.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.