Summary of the invention
The embodiment of the present invention provides a kind of method and apparatus of premature beats, in order to improve femtocell gateway device reliability of operation and automatic recovery ability.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
A method for premature beats, comprising:
The size of the total data bag in monitoring local message queue;
When described total data bag is greater than predetermined word section door in limited time, within the scope of setting-up time, according to predetermined period, record the pending duration of the packet of tail of the queue in described message queue; Described pending duration is for characterizing a packet from there is duration message queue; Wherein, described setting-up time scope is greater than default collection period, and described setting-up time scope is the integral multiple of described predetermined period; Often record once pending duration, the pending duration of current record and Preset Time thresholding are compared, the alarm level corresponding according to the pending duration of comparative result determination current record;
Add up the occurrence number of each alarm level recorded within the scope of described setting-up time, a kind of alarm level reaching default alarm number of times thresholding is defined as target alarms rank corresponding within the scope of described setting-up time;
Corresponding premature beats is performed according to described target alarms rank.
Like this, take corresponding premature beats measure according to the load class of home gateway, ensure that femtocell gateway device reliability of operation and automatic recovery ability.
Preferably, often record once pending duration, the pending duration of current record and Preset Time thresholding are compared, the alarm level corresponding according to the pending duration of comparative result determination current record, comprising:
If the once pending duration of record is not less than described Preset Time thresholding, and the difference of the two is less than the first pre-determined threshold, then determine that the alarm level that the pending duration of current record is corresponding is first level; Wherein, described first level characterizes local congestion state is slight;
If the once pending duration of record is not less than described Preset Time thresholding, and the difference of the two is between described first pre-determined threshold and the second pre-determined threshold, then determine that the alarm level that the pending duration of current record is corresponding is second level; Wherein, described second level characterizes local congestion state is moderate;
If the once pending duration of record is not less than described Preset Time thresholding, and the difference of the two is greater than described second pre-determined threshold, then determine that the alarm level that the pending duration of current record is corresponding is third level, wherein, it is severe that described third level characterizes local congestion state.
Preferably, add up the occurrence number of each alarm level recorded within the scope of described setting-up time, a kind of alarm level reaching default report and alarm number of times be defined as target alarms rank corresponding within the scope of described setting-up time, comprise:
Preset alarm number of times thresholding according to the appearance total degree of each alarm level recorded within the scope of described setting-up time and default alarm number of times ratio-dependent, according to alarm level order from high to low, determine the total degree that each alarm level occurs;
The total degree occurred by each alarm level successively compares with default report and alarm number of times respectively, a kind of alarm level reaching default report and alarm number of times is defined as target alarms rank corresponding within the scope of described setting-up time.
Preferably, determine to comprise the total degree that each alarm level occurs:
When determining the total degree that described first level occurs, using the total degree that the occurrence number sum of the occurrence number of described first level of record, the occurrence number alarm of described second level and described third level occurs as described first level;
When determining the total degree that described second level occurs, using the total degree that the occurrence number of described second level of record and the occurrence number sum of described third level occur as described second level;
When determining the total degree that described third level occurs, using the total degree that the occurrence number of the described third level of record occurs as described third level.
Preferably, perform corresponding premature beats according to described target alarms rank, comprising:
If described target alarms rank is first level, then abandon local when sharing tracking area TA with grand net base station grand webmaster have jurisdiction over the beep-page message of the mobile terminal under community;
If described target alarms rank is second level, then refuse the access request of local mobile terminal, and abandon local mobile terminal beep-page message and local when sharing tracking area TA with grand net base station grand webmaster have jurisdiction over the beep-page message of the mobile terminal under community;
If described target alarms rank is third level, then attachment removal is at local a period of time inactive mobile terminal, the access request of refusal local mobile terminal, and abandon local mobile terminal beep-page message and local when sharing TA with grand net base station grand webmaster have jurisdiction over the beep-page message of the mobile terminal under community.
Preferably, after being defined as target alarms rank corresponding within the scope of described setting-up time, comprise further:
If the target alarms rank determined is second level, then carry out first level and second level alarm, and perform corresponding premature beats according to described second level;
If the target alarms rank determined is third level, then carry out first level, second level and third level alarm, and perform corresponding premature beats according to described third level.
Preferably, after performing corresponding premature beats according to described alarm level, comprise further:
If redefine current alarm level after executing premature beats;
Judge whether described current alarm level is adjacent level relation with the target alarms rank used when performing described premature beats;
If so, then corresponding premature beats is performed according to current alarm level;
Otherwise, extend a described setting-up time scope, judge current alarm level again, if the current alarm level determined double is identical, then carry out corresponding premature beats according to described current alarm level, if the alarm level determined double is not identical, then perform corresponding premature beats according to the alarm level that wherein rank is higher.
A device for premature beats, comprising:
Monitoring unit, for monitoring the size of the total data bag in local message queue;
Record cell, for being greater than predetermined word section door when described total data bag in limited time, within the scope of setting-up time, according to predetermined period, records the pending duration of the packet of tail of the queue in described message queue; Described pending duration is for characterizing a packet from there is duration message queue; Wherein, described setting-up time scope is greater than default collection period, and described setting-up time scope is the integral multiple of described predetermined period; Often record once pending duration, the pending duration of current record and Preset Time thresholding are compared, the alarm level corresponding according to the pending duration of comparative result determination current record;
Determining unit, for adding up the occurrence number of each alarm level recorded within the scope of described setting-up time, is defined as target alarms rank corresponding within the scope of described setting-up time by a kind of alarm level reaching default alarm number of times thresholding;
Performance element, for performing corresponding premature beats according to described target alarms rank.
Like this, take corresponding premature beats measure according to the load class of home gateway, ensure that femtocell gateway device reliability of operation and automatic recovery ability.
Preferably, often record once pending duration, the pending duration of current record and Preset Time thresholding are compared, during according to the alarm level that the pending duration of comparative result determination current record is corresponding, described record cell is used for:
If the once pending duration of record is not less than described Preset Time thresholding, and the difference of the two is less than the first pre-determined threshold, then determine that the alarm level that the pending duration of current record is corresponding is first level; Wherein, described first level characterizes local congestion state is slight;
If the once pending duration of record is not less than described Preset Time thresholding, and the difference of the two is between described first pre-determined threshold and the second pre-determined threshold, then determine that the alarm level that the pending duration of current record is corresponding is second level; Wherein, described second level characterizes local congestion state is moderate;
If the once pending duration of record is not less than described Preset Time thresholding, and the difference of the two is greater than described second pre-determined threshold, then determine that the alarm level that the pending duration of current record is corresponding is third level, wherein, it is severe that described third level characterizes local congestion state.
Preferably, add up the occurrence number of each alarm level recorded within the scope of described setting-up time, when a kind of alarm level reaching default report and alarm number of times being defined as target alarms rank corresponding within the scope of described setting-up time, described determining unit is used for:
Preset alarm number of times thresholding according to the appearance total degree of each alarm level recorded within the scope of described setting-up time and default alarm number of times ratio-dependent, according to alarm level order from high to low, determine the total degree that each alarm level occurs;
The total degree occurred by each alarm level successively compares with default report and alarm number of times respectively, a kind of alarm level reaching default report and alarm number of times is defined as target alarms rank corresponding within the scope of described setting-up time.
Preferably, when determining the total degree that each alarm level occurs, described determining unit is used for:
When determining the total degree that described first level occurs, using the total degree that the occurrence number sum of the occurrence number of described first level of record, the occurrence number alarm of described second level and described third level occurs as described first level;
When determining the total degree that described second level occurs, using the total degree that the occurrence number of described second level of record and the occurrence number sum of described third level occur as described second level;
When determining the total degree that described third level occurs, using the total degree that the occurrence number of the described third level of record occurs as described third level.
Preferably, when performing corresponding premature beats according to described target alarms rank, described performance element is used for:
If described target alarms rank is first level, then abandon local when sharing tracking area TA with grand net base station grand webmaster have jurisdiction over the beep-page message of the mobile terminal under community;
If described target alarms rank is second level, then refuse the access request of local mobile terminal, and abandon local mobile terminal beep-page message and local when sharing tracking area TA with grand net base station grand webmaster have jurisdiction over the beep-page message of the mobile terminal under community;
If described target alarms rank is third level, then attachment removal is at local a period of time inactive mobile terminal, the access request of refusal local mobile terminal, and abandon local mobile terminal beep-page message and local when sharing TA with grand net base station grand webmaster have jurisdiction over the beep-page message of the mobile terminal under community.
Preferably, after being defined as target alarms rank corresponding within the scope of described setting-up time, described performance element is further used for:
If the target alarms rank determined is second level, then carry out first level and second level alarm, and perform corresponding premature beats according to described second level;
If the target alarms rank determined is third level, then carry out first level, second level and third level alarm, and perform corresponding premature beats according to described third level.
Preferably, after performing corresponding premature beats according to described alarm level, described performance element is further used for:
If redefine current alarm level after executing premature beats;
Judge whether described current alarm level is adjacent level relation with the target alarms rank used when performing described premature beats;
If so, then corresponding premature beats is performed according to current alarm level;
Otherwise, extend a described setting-up time scope, judge current alarm level again, if the current alarm level determined double is identical, then carry out corresponding premature beats according to described current alarm level, if the alarm level determined double is not identical, then perform corresponding premature beats according to the alarm level that wherein rank is higher.
Embodiment
In order to reflect the integral load situation of home gateway accurately, and well solve the load problem in various degree of femto gateway.In the embodiment of the present invention, take corresponding premature beats measure according to the load class of femto gateway, ensure that femtocell gateway device reliability of operation and automatic recovery ability.
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is described in detail.
Consult shown in Fig. 1, in the embodiment of the present invention, the general introduction flow process of premature beats is as follows:
Step 100: the size of the total data bag in monitoring local message queue.
Step 110: when total data bag is greater than predetermined word section door in limited time, within the scope of setting-up time, according to predetermined period, the pending duration of the packet of tail of the queue in recording messages queue; Pending duration wraps in and there is duration for characterizing data in message queue; Wherein, setting-up time scope is greater than default collection period, and setting-up time scope is the integral multiple of predetermined period; Often record once pending duration, the pending duration of current record and Preset Time thresholding are compared, the alarm level corresponding according to the pending duration of comparative result determination current record.
Under normal circumstances, default byte can be about 10000 bytes, about the total data packet byte sum in local message queue is more than 10000 bytes, just starts the problem of considering whether to transship.
In the embodiment of the present invention, when performing step 110, if the once pending duration of record is not less than Preset Time thresholding, and the difference of the two is less than the first pre-determined threshold, then determine that the alarm level that the pending duration of current record is corresponding is first level, wherein, first level characterizes local congestion state is slight.
General, be that the pending duration of the half of Preset Time thresholding is set as the first pre-determined threshold by the difference of the two.
Such as, recording pending duration is 12s, and Preset Time thresholding is 10s, and so, the difference of the two is 2s, 2s is 1/5 of 10s, is less than the first pre-determined threshold (1/2), then determine that this alarm level is first level.
If the once pending duration of record is not less than Preset Time thresholding, and the difference of the two is between the first pre-determined threshold and the second pre-determined threshold, then determine that the alarm level that the pending duration of current record is corresponding is second level, wherein, it is moderate that second level characterizes local congestion state.
General, be that the pending duration of two times of Preset Time thresholding is set as the second pre-determined threshold by the difference of the two.
Such as, recording pending duration is 20s, and Preset Time thresholding is 10s, so, 1 times of the difference of the two to be 10s, 10s be 10s, between the first pre-determined threshold and the second pre-determined threshold (1 is greater than 1/2 and is less than 2), then determine that this alarm level is second level.
If the once pending duration of record is not less than Preset Time thresholding, and the difference of the two is greater than the second pre-determined threshold, then determine that the alarm level that the pending duration of current record is corresponding is third level, wherein, it is severe that third level characterizes local congestion state.
Such as, recording pending duration is 31s, and Preset Time thresholding is 10s, and so, the difference of the two is that 21s, 21s are greater than 20s [21 are greater than (10 × 2)], then determine that this alarm level is third level.
Step 120: the occurrence number of adding up each alarm level recorded within the scope of setting-up time, is defined as target alarms rank corresponding within the scope of setting-up time by a kind of alarm level reaching default alarm number of times thresholding.
Preferably, report and alarm number of times is preset according to the appearance total degree of each alarm level added up within the scope of setting-up time and default alarm number of times ratio-dependent, according to alarm level order from high to low, determine the total degree that each alarm level occurs, and total degree and default report and alarm number of times are compared, the alarm level reaching default report and alarm number of times is defined as target alarms rank corresponding within the scope of setting-up time.
In addition, when determining the total degree that first level occurs, the first level of record, second level and third level number of times sum are defined as the total degree that first level occurs.
Such as, first level number of times is 1, second level number of times is 2, third level number of times is 3, and so, first level total degree is defined as 6 (1+2+3=6).
When determining the total degree that second level occurs, the second level of record and third level number of times sum are defined as the total degree that second level occurs.
Such as, second level number of times is 2, third level number of times is 3, and so, second level total degree is defined as 5 (2+3=5).
When determining the total degree that third level occurs, the number of times of the third level of record is defined as the total degree that third level occurs.
Such as, third level number of times is 3, so, directly determines that third level total degree is 3.
In the embodiment of the present invention, when performing step 110 and 120, if 30s during the time range of setting, predetermined period is 5s, so can carry out 6 writing times in the time range of setting.When first 5s, the pending duration of packet in message queue recording tail of the queue in now message queue is 12s, when second 5s, the pending duration of packet in message queue recording tail of the queue in now message queue is 16s, when the 3rd 5s, the pending duration of packet in message queue recording tail of the queue in now message queue is 23s, when the 4th 5s, the pending duration of packet in message queue recording tail of the queue in now message queue is 31s, when the 5th 5s, the pending duration of packet in message queue recording tail of the queue in now message queue is 35s, when the 6th 5s, the pending duration of packet in message queue recording tail of the queue in now message queue is 32s, and suppose that Preset Time thresholding is 10s, so, six alarm levels determined are followed successively by: first level, second level, second level, third level, third level and third level, the number of times adding up different alarm level is respectively: first level is 1 time, second level is 2 times, third level is 3 times.Presetting alarm number of times ratio is 80%, so, presetting report and alarm number of times is 5 times (6 × 80%=4.8), so, first considers the total degree that third level occurs, total degree is 3, because 3 are less than 5, then continue the total degree considering that second level occurs, total degree is 5 (2+3=5), due to 5=5, namely reach default reporting alerts number of times.So, second level is defined as target alarms rank.
Step 130: perform corresponding premature beats according to target alarms rank.
Concrete, if target alarms rank is first level, then abandon local when sharing tracking area (Tracking Area, TA) with grand net base station grand webmaster have jurisdiction over the beep-page message of the mobile terminal under community;
If target alarms rank is second level, then refuse the access request of local mobile terminal, and abandon local mobile terminal beep-page message and local when sharing tracking area (Tracking Area, TA) with grand net base station grand webmaster have jurisdiction over the beep-page message of the mobile terminal under community;
If target alarms rank is third level, then attachment removal is at local a period of time inactive mobile terminal, the access request of refusal local mobile terminal, and abandon local mobile terminal beep-page message and local when sharing tracking area TA with grand net base station grand webmaster have jurisdiction over the beep-page message of the mobile terminal under community.
Further, after being defined as target alarms rank corresponding within the scope of setting-up time, if the target BS alarm level determined is second level, then carry out first level and second level alarm, and perform corresponding premature beats according to second level alarm;
If the target BS alarm level determined is third level, then carry out first level, second level and third level alarm, and perform corresponding premature beats according to third level alarm.
In addition, current alarm level is redefined after performing premature beats;
Judge whether current alarm level is adjacent level relation with the target alarms rank used when performing premature beats;
If so, then corresponding premature beats is performed according to current alarm level;
Otherwise, extend a setting-up time scope, judge current alarm level again, if the current alarm level determined double is identical, then carry out corresponding premature beats according to current alarm level, if the alarm level determined double is not identical, then perform corresponding premature beats according to the alarm level that wherein rank is higher.
Such as, target alarms rank is third level alarm, after performing corresponding premature beats, within the scope of next setting-up time, if detecting the alarm level obtained now is second level, (third level and second level are adjacent), so, performs corresponding premature beats according to second level;
If detecting the alarm level obtained now is that (first level and third level are not adjacent to first level, bypass the immediate leadership), then extend identical setting-up time scope, judge current alarm level again, if the alarm level determined double remains first level, then perform corresponding premature beats according to first level alarm, if the alarm level this time judged is second level, then perform corresponding premature beats according to second level alarm.
Below in conjunction with a concrete application scenarios, further detailed description is made to above-described embodiment, consult shown in Fig. 2.
Step 200: the size of the total data bag in monitoring local message queue.
Step 201: determine alarm level and corresponding number of times.
Concrete, total data bag exceedes predetermined word section door in limited time, within the scope of setting-up time, according to predetermined period, the pending duration of the packet of tail of the queue in message queue in recording messages queue, and determines the alarm level that the pending duration of current record is corresponding.
And, when determining the total degree that first level occurs, the first level of record, second level and third level number of times sum are defined as the total degree that first level occurs;
When determining the total degree that second level occurs, the second level of record and third level number of times sum are defined as the total degree that second level occurs;
When determining the total degree that third level occurs, the number of times of the third level of record is defined as the total degree that third level occurs.
Step 202: judge whether third level is greater than default report and alarm number of times.
If so, step 203 is performed, otherwise, perform step 204.
Step 203: be defined as third level, and perform premature beats according to third level.
Step 204: judge whether second level is greater than default report and alarm number of times.
If so, step 205 is performed, otherwise, perform step 206.
Step 205: be defined as second level, and perform premature beats according to second level.
Step 206: judge whether first level is greater than default report and alarm number of times.
If so, step 207 is performed, otherwise, perform step 208.
Step 207: be defined as first level, and perform premature beats according to first level.
Step 208: do not perform premature beats.
Based on above-described embodiment, consult shown in Fig. 3, in the embodiment of the present invention, the device of premature beats comprises: monitoring unit 30, record cell 31, determining unit 32 and performance element 33, wherein,
Monitoring unit 30, for monitoring the size of the total data bag in local message queue;
Record cell 31, for being greater than predetermined word section door when total data bag in limited time, within the scope of setting-up time, according to predetermined period, the pending duration of the packet of tail of the queue in recording messages queue; Pending duration is for characterizing a packet from there is duration message queue; Wherein, setting-up time scope is greater than default collection period, and setting-up time scope is the integral multiple of predetermined period; Often record once pending duration, the pending duration of current record and Preset Time thresholding are compared, the alarm level corresponding according to the pending duration of comparative result determination current record;
Determining unit 32, for adding up the occurrence number of each alarm level recorded within the scope of setting-up time, is defined as target alarms rank corresponding within the scope of setting-up time by a kind of alarm level reaching default alarm number of times thresholding;
Performance element 33, for performing corresponding premature beats according to target alarms rank.
Preferably, often record once pending duration, the pending duration of current record and Preset Time thresholding compared, during according to the alarm level that the pending duration of comparative result determination current record is corresponding, record cell 31 for:
If the once pending duration of record is not less than Preset Time thresholding, and the difference of the two is less than the first pre-determined threshold, then determine that the alarm level that the pending duration of current record is corresponding is first level; Wherein, first level characterizes local congestion state is slight;
If the once pending duration of record is not less than Preset Time thresholding, and the difference of the two is between the first pre-determined threshold and the second pre-determined threshold, then determine that the alarm level that the pending duration of current record is corresponding is second level; Wherein, second level characterizes local congestion state is moderate;
If the once pending duration of record is not less than Preset Time thresholding, and the difference of the two is greater than the second pre-determined threshold, then determine that the alarm level that the pending duration of current record is corresponding is third level, wherein, it is severe that third level characterizes local congestion state.
Preferably, add up the occurrence number of each alarm level recorded within the scope of setting-up time, when a kind of alarm level reaching default report and alarm number of times to be defined as within the scope of setting-up time corresponding target alarms rank, determining unit 32 for:
Preset alarm number of times thresholding according to the appearance total degree of each alarm level recorded within the scope of setting-up time and default alarm number of times ratio-dependent, according to alarm level order from high to low, determine the total degree that each alarm level occurs;
The total degree occurred by each alarm level successively compares with default report and alarm number of times respectively, a kind of alarm level reaching default report and alarm number of times is defined as target alarms rank corresponding within the scope of setting-up time.
Preferably, when determining the total degree that each alarm level occurs, determining unit 32 for:
When determining the total degree that first level occurs, using the total degree that the occurrence number sum of the occurrence number of first level of record, the occurrence number alarm of second level and third level occurs as first level;
When determining the total degree that second level occurs, using the total degree that the occurrence number of second level of record and the occurrence number sum of third level occur as second level;
When determining the total degree that third level occurs, using the total degree that the occurrence number of the third level of record occurs as third level.
Preferably, when performing corresponding premature beats according to target alarms rank, performance element 33 for:
If target alarms rank is first level, then abandon local when sharing tracking area TA with grand net base station grand webmaster have jurisdiction over the beep-page message of the mobile terminal under community;
If target alarms rank is second level, then refuse the access request of local mobile terminal, and abandon local mobile terminal beep-page message and local when sharing tracking area TA with grand net base station grand webmaster have jurisdiction over the beep-page message of the mobile terminal under community;
If target alarms rank is third level, then attachment removal is at local a period of time inactive mobile terminal, the access request of refusal local mobile terminal, and abandon local mobile terminal beep-page message and local when sharing TA with grand net base station grand webmaster have jurisdiction over the beep-page message of the mobile terminal under community.
Preferably, after being defined as target alarms rank corresponding within the scope of setting-up time, performance element 33 is further used for:
If the target alarms rank determined is second level, then carry out first level and second level alarm, and perform corresponding premature beats according to second level;
If the target alarms rank determined is third level, then carry out first level, second level and third level alarm, and perform corresponding premature beats according to third level.
Preferably, after performing corresponding premature beats according to alarm level, performance element 33 is further used for:
If redefine current alarm level after executing premature beats;
Judge whether current alarm level is adjacent level relation with the target alarms rank used when performing premature beats;
If so, then corresponding premature beats is performed according to current alarm level;
Otherwise, extend a setting-up time scope, judge current alarm level again, if the current alarm level determined double is identical, then carry out corresponding premature beats according to current alarm level, if the alarm level determined double is not identical, then perform corresponding premature beats according to the alarm level that wherein rank is higher.
In sum, in the embodiment of the present invention, propose a kind of method and apparatus of premature beats, the program is: the size of the total data bag in monitoring local message queue; When total data bag is greater than predetermined word section door in limited time, within the scope of setting-up time, according to predetermined period, the pending duration of the packet of tail of the queue in recording messages queue; According to pending duration, determine the alarm level that the pending duration of current record is corresponding; Add up the occurrence number of each alarm level recorded within the scope of setting-up time, when a kind of alarm level reaching default alarm number of times thresholding is defined as target alarms rank corresponding within the scope of setting-up time; Corresponding premature beats is performed according to target alarms rank.Like this, take corresponding premature beats measure according to the load class of home gateway, ensure that femtocell gateway device reliability of operation and automatic recovery ability.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can perform various change and modification to the embodiment of the present invention and not depart from the spirit and scope of the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.