CN101873151B - Method and device for setting search window center in mode of fixing search window - Google Patents
Method and device for setting search window center in mode of fixing search window Download PDFInfo
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Abstract
The invention relates to method and device for setting a search window center in the mode of fixing a search window, wherein the method comprises the steps of: obtaining an earliest reaching short code offset EPN value of a reverse business frame as a reporting EPN value; regulating the search window center according to the reporting EPN value, the current EPN setting value and preset update step when a difference value between the reporting EPN value and the current EPN setting value is larger than a preset threshold; and using the current EPN setting value as a position setting value of the current search window center. In the invention, the position of the search window center is set according to the regularly acquired reporting EPN value, preset threshold and preset update step, and the update step of the current EPN setting value is set according to the motion speed of a terminal of a utilization scene; and thus, abnormal deflection caused by the loss of the locking of the search window when abnormal jumping of the EPN value is caused by reasons of searching false multiple paths and the like is avoided, the system dropping rate is reduced; moreover, the disturbance of search of the false multiple paths is eliminated, and an accurate multi-path time phase is obtained.
Description
Technical field
The present invention relates to field of wireless communication, relate in particular to method and device that in a kind of cdma system, under reverse traffic channel fixing search window pattern, search window centre arranges.
Background technology
In cdma system, the search window pattern of reverse traffic channel is divided into fixing search window pattern and slip scan window pattern, for fixing search window pattern, after having set the search window centre of reverse traffic channel, Demodulation Systems chip can not controlled search window centre and change along with the change in location of mobile terminal, but can only to Demodulation Systems chip, reset to change by application layer software the position of search window centre; For slip scan window pattern, when fast mobile terminal, can, by the slip of search window width scope, make to search for window and can be switched on the position that can cover multipath delay, and search within the scope of the window width before and after this multipath, with this, keep track terminal signal.
At present, in having the community of group service, due to the group calling user shared service channel under community, need the reverse traffic channel under Jiang Gai community to be set to fixing search window pattern.Under fixing search window pattern, up-to-date EPN (the EarliestPseudo-noise Sequence that the method for fixing search window center normally reports according to Demodulation Systems chip is set at present, the round time delay of wireless signal of terminal and base station, characterizing terminal apart from the distance of the distance and position of base station) value resets fixing search Chuan center, by fixing search window center, keeps track terminal signal.
Yet, in actual wireless communications environment, due to the signal phase mutual interference between each user, usually make receiver receive false correlation peak, cause searching false multipath information, or when reverse link losing lock, the up-to-date EPN value that Demodulation Systems chip reports jumps to abnormal large value sometimes.It is the normal variation of the signal lag of eating dishes without rice or wine that causes of mobile phone signal path change that existing fixing search window adjustment algorithm makes the EPN value of abnormal saltus step thought of system applies fault mistake, thereby with the EPN value of this abnormal saltus step, reset the search window centre of Demodulation Systems chip, search window is adjusted on wrong position and worked, subscriber signal cannot be fallen in the effective range of search window, cause searching correct multipath information, and cannot obtain accurately multipath time phase, thereby cause base station reverse to be demodulated into bad frame, if this situation continues, after the timer expiry of base station, will cause call drop.
Summary of the invention
Main purpose of the present invention is to provide method and the device that under a kind of fixing search window pattern, search window centre arranges, be intended to when Demodulation Systems chip obtain report EPN value that ANOMALOUS VARIATIONS occurs time, avoid searching for window abnormal skew occurs, thereby obtain accurately multipath time phase, reduce system cutting off rate.
The present invention proposes a kind of method that under fixing search window pattern, search window centre arranges, and comprises the following steps:
Obtain the biasing of the arrival short code the earliest EPN value of reverse traffic frame, as reporting EPN value;
When reporting difference between EPN value and current EPN settings to be greater than default thresholding, according to reporting EPN value, current EPN settings and the default step-length adjustment search window centre that upgrades; The position setting value that described current EPN settings are current search window center.
Preferably, according to reporting EPN value, current EPN settings and the default step of upgrading step-length adjustment search window centre specifically to comprise:
Judgement reports the difference between EPN value and current EPN settings whether to be greater than described default renewal step-length;
If report the difference between EPN value and current EPN settings to be greater than described default renewal step-length, judgement reports EPN value whether to be greater than current EPN settings;
If report EPN value to be greater than current EPN settings, current EPN settings are added to the default step-length of upgrading, obtain new current EPN settings;
If report the little current EPN settings of EPN value, current EPN settings are deducted to the default step-length of upgrading, obtain new current EPN settings.
Preferably, the step that judgement reports difference between EPN value and current EPN settings whether to be greater than described default renewal step-length also comprises afterwards:
If report the difference between EPN value and current EPN settings to be less than the default step-length of upgrading, described in being updated to, described current EPN settings report EPN value, obtain new current EPN settings.
Preferably, described in obtain the EPN value of reverse traffic frame, before reporting the step of EPN value, also comprise:
Described default thresholding and the default step-length of upgrading are set.
Preferably, described default thresholding is for reaching the earliest PN offset change thresholding; Described default renewal step-length is obtained according to the translational speed of mobile terminal in use scenes.
Preferably, described in, report EPN value regularly to obtain to arrive the earliest PN offset change sense cycle.
The present invention proposes the device that under a kind of fixing search window pattern, search window centre arranges, and comprising:
Acquisition module, for obtaining the EPN value of reverse traffic frame, as reporting EPN value;
Update module, for when reporting difference between EPN value and current EPN settings to be greater than default thresholding, according to reporting EPN value, current EPN settings and the default step-length adjustment search window centre that upgrades; The position setting value that described current EPN settings are current search window center.
Preferably, described update module specifically comprises:
Judging unit, for judging whether the difference reporting between EPN value and current EPN settings is greater than described default renewal step-length; And when reporting difference between EPN value and current EPN settings to be greater than described default renewal step-length, judgement reports EPN value whether to be greater than current EPN settings;
Updating block, for when reporting EPN value to be greater than current EPN settings, adds the default step-length of upgrading by current EPN settings, obtains new current EPN settings; And
When reporting the little current EPN settings of EPN value, current EPN settings are deducted to the default step-length of upgrading, obtain new current EPN settings.
Preferably, described updating block, also, for default while upgrading step-length when reporting difference between EPN value and current EPN settings to be less than, reports EPN value described in current EPN settings are updated to, and obtains new current EPN settings.
Preferably, described device also comprises module is set, for described default thresholding and the default step-length of upgrading are set.
Method and device that under fixing search window pattern of the present invention, search window centre arranges, by what regularly obtain, report EPN value and preset thresholding and the default step-length of upgrading arranges search window centre position, and the renewal step-length of current EPN settings is set according to the translational speed of the terminal of use scenes, the speed that search window centre moves is set, avoided when searching for the abnormal saltus step of EPN value that the reasons such as false multipath cause, system is adjusted to search window centre in demodulation chip and carry out mistake setting, cause searching for window losing lock and cause abnormal skew, thereby avoided subscriber signal cannot fall into the situation of search window effective range, reduced system cutting off rate, and got rid of the interference of searching for false multipath, obtained accurately multipath time phase.
Accompanying drawing explanation
Fig. 1 is the method one embodiment schematic flow sheet that under fixing search window pattern of the present invention, search window centre arranges;
Fig. 2 is according to reporting EPN value, current EPN settings and the default idiographic flow schematic diagram that upgrades step-length adjustment search window centre in the method for search window centre setting under the fixing search window pattern shown in Fig. 1;
Fig. 3 is another embodiment schematic flow sheet of method that under fixing search window pattern of the present invention, search window centre arranges;
Fig. 4 is the device one example structure schematic diagram that under fixing search window pattern of the present invention, search window centre arranges;
Fig. 5 is update module concrete structure schematic diagram in the device that under the fixing search window pattern shown in Fig. 4, search window centre arranges;
Fig. 6 is another example structure schematic diagram of device that under fixing search window pattern of the present invention, search window centre arranges.
In order to make technical scheme of the present invention clearer, clear, below in conjunction with accompanying drawing, be described in further detail.
Embodiment
Solution for embodiment of the invention is mainly: by obtaining, report EPN value, and according to reporting EPN value and presetting thresholding and preset renewal step-length, search window centre position is set, while avoiding EPN settings generation ANOMALOUS VARIATIONS, there is abnormal skew and cause system call drop in search window.
As shown in Figure 1, one embodiment of the invention proposes a kind of method that under fixing search window pattern, search window centre arranges, and comprising:
This method embodiment running environment relates to the modem chip of the EPN value of demodulation reverse traffic frame in cdma system and by call back function, carries out the application layer of data transmission with modem chip, and modem chip arranges fixing search window center with terminal location and keeps track terminal signal.
In cdma system, when the search pattern of reverse traffic channel is set to fixing search window pattern, can be by reaching the earliest PN offset change thresholding (Earliest Offset Change Threshold), arriving two parameters of PN offset change sense cycle (Earliest Offset Callback PeriodIn PCG) the earliest, for system modulation demodulation chip arranges the thresholding of adjusting back when EPN value changes.System modulation demodulation chip reads the EPN value of the reverse traffic frame demodulating to arrive the earliest PN offset change sense cycle, and using this EPN value as Demodulation Systems chip up-to-date report EPN value, by readjustment mode, notify application layer.
As shown in Figure 2, wherein in step 102, according to reporting EPN value, current EPN settings and default renewal step-length to adjust search window centre, specifically comprise:
Wherein, the position setting value that current EPN settings are current search window center;
The present embodiment be take practical application and is described as example, in actual applications, system makes a call by access channel, centered by base station, carry out search entirely in community, when setting up Traffic Channel, EPN value while using access channel, initial position setting value as the search window centre of reverse traffic channel, it is the initial value of EPN settings, and EPN settings are arranged in modem chip, application layer is preserved the initial value of these EPN settings according to sector simultaneously, as the initial value of EPN under this sector.
System modulation demodulation chip reads the EPN value of the reverse traffic frame demodulating to arrive the earliest PN offset change sense cycle, while reporting EPN value, by reporting EPN value and the current EPN value being kept in system modulation demodulation chip, be that current EPN value compares, when reporting the difference between EPN value and current EPN value to surpass predetermined threshold value, in the present embodiment, above-mentioned default thresholding is for reaching the earliest PN offset change thresholding, now trigger the call back function of application layer registration, and notify application layer EPN value to change, represent that the position of terminal is changed.
When application layer software is received reporting after EPN value of readjustment notice, because the search window centre under fixing search window pattern is not to be calculated and got by system modulation demodulation chip, under this kind of situation, the method that prior art adopts is: application layer arranges the position setting value that reports EPN value as fixing search window center to system modulation demodulation chip, make system modulation demodulation chip using the up-to-date position of terminal as demodulation center, reach the object that track terminal moves.
The present embodiment is for fear of at some special screnes, during such as reverse link losing lock, the EPN value of reverse traffic frame produces violent saltus step and causes search window centre that abnormal skew occurs and cause system call drop, and according to the translational speed of mobile terminal in use scenes, estimate the displacement of terminal maximum possible in the time that reaches the earliest PN offset change thresholding, this displacement is converted into chip (chip) unit and becomes EPN renewal step-length (EPN Update Threshold), preset and upgrade step-length, and using this default step-length of upgrading and will report EPN value to be set in system modulation demodulation chip the thresholding as search window centre as judging whether, this thresholding represents to upgrade according to the position of moving velocity of terminal limiting terminal the limit of speed.
Application layer receives after EPN value change message at every turn, calculate the poor of the up-to-date current EPN settings that report EPN and preservation, if up-to-date report EPN value and the difference of the current EPN settings of preserving are less than the default step-length of upgrading, show that this EPN value renewal is effectively credible, the new EPN value that reports can be set to the position setting value of search window centre, be that current EPN settings are updated to the new EPN value that reports, otherwise judge the abnormal saltus step that changes to of EPN value, and on the basis of the current EPN settings of preserving, rise or decline the default amplitude of upgrading step-length, with this, upgrade adjustment search window centre.Thereby according to the translational speed of terminal, the default step-length of upgrading is set, the speed moving to limit search window centre, does not allow a saltus step of current EPN settings excessive, cause search window offset and losing lock causes system call drop.
In the present embodiment, the renewal arranging specifically by current EPN settings of search window centre realizes, its concrete renewal process is: when judgement reports difference between EPN value and current EPN settings to be greater than described default renewal step-length, judgement reports EPN value whether to be greater than current EPN settings; If report EPN value to be greater than current EPN settings, current EPN settings are added to the default step-length of upgrading, obtain new current EPN settings; If report EPN value to be less than current EPN settings, current EPN settings are deducted to the default step-length of upgrading, obtain new current EPN settings; Further, when judgement, to report difference between EPN value and current EPN settings to be less than default while upgrading step-length, and current EPN settings are updated to and report EPN value, obtains new current EPN settings.Finally, according to new current EPN settings, adjust the position of search window centre, and new current EPN settings are arranged in system adjustment demodulation chip, new current EPN settings are kept to the current sector of application layer simultaneously.
It should be noted that, in the present embodiment, when reporting difference between EPN value and current EPN settings to be less than default thresholding, adopt the common way of prior art, do not upgrade search window centre, to application layer, do not report EPN value, current EPN settings are constant, and the position of search window centre remains unchanged.
The present embodiment arranges search window centre position by reporting EPN value and presetting thresholding and preset renewal step-length of regularly obtaining, and the renewal step-length of current EPN settings is set according to the translational speed of the terminal of use scenes, the speed that search window centre moves is set, avoided when searching for the abnormal saltus step of EPN value that the reasons such as false multipath cause, system is adjusted to search window centre in demodulation chip and carry out mistake setting, cause searching for window losing lock and cause abnormal skew, thereby avoided subscriber signal cannot fall into the situation of search window effective range, reduction system cutting off rate.
As shown in Figure 3, another embodiment of the present invention proposes a kind of method that under fixing search window pattern, search window centre arranges, and on the basis of above-described embodiment, wherein before step 101, also comprises:
In the present embodiment, default thresholding is for reaching the earliest PN offset change thresholding; The default step-length of upgrading is obtained according to the translational speed of mobile terminal in use scenes, specifically according to the translational speed of mobile terminal in use scenes, estimate the displacement of terminal maximum possible in the time that reaches the earliest PN offset change thresholding, this displacement is converted into chip unit becomes EPN renewal step-length, as judging after EPN value is upgraded whether this new EPN that reports is set to the thresholding of making search window centre in system adjustment demodulation chip.
As shown in Figure 4, one embodiment of the invention proposes the device that under a kind of fixing search window pattern, search window centre arranges, and comprising:
In the present embodiment, acquisition module 401 be take and arrived the earliest PN offset change sense cycle (EarliestOffset Callback PeriodInPCG) and go to read the EPN value of the reverse traffic frame demodulating as the cycle, as reporting EPN value.
As shown in Figure 5, update module 402 specifically comprises:
Judging unit 4021, for judging whether the difference reporting between EPN value and current EPN settings is greater than described default renewal step-length; And when reporting difference between EPN value and current EPN settings to be greater than described default renewal step-length, judgement reports EPN value whether to be greater than current EPN settings;
Wherein, the position setting value that current EPN settings are current search window center.
Updating block 4022, for when reporting EPN value to be greater than current EPN settings, adds the default step-length of upgrading by current EPN settings, obtains new current EPN settings; And when reporting the little current EPN settings of EPN value, current EPN settings are deducted to the default step-length of upgrading, obtain new current EPN settings.
Updating block 4022, also, for default while upgrading step-length when reporting difference between EPN value and current EPN settings to be less than, is updated to current EPN settings to report EPN value, obtains new current EPN settings.
It should be noted that, in the present embodiment, when acquisition module 401 obtain report difference between EPN value and current EPN settings to be less than default thresholding time, do not upgrade search window centre, be that in acquisition module 401 update notifications modules 402, updating block 4022 does not upgrade current EPN settings, the position of search window centre remains unchanged.
As shown in Figure 6, another embodiment of the present invention proposes the device that search window centre under a kind of fixing search window pattern arranges, and on the basis of above-described embodiment, this device also comprises module 403 is set, for default thresholding and default renewal step-length are set.
It should be noted that, when the present embodiment combines with practical application, in the present embodiment, acquisition module 401 can be arranged in cdma system in modem chip, and update module 402 can be arranged on the application layer of carrying out data transmission with modem chip.
The embodiment of the present invention is reported EPN value and is preset thresholding and the default step-length renewal search window centre position of upgrading by what regularly obtain, and the renewal step-length of current EPN settings is set according to the translational speed of the terminal of use scenes, filter out the abnormal saltus step of EPN value, solved under reverse traffic channel fixing search window pattern, the abnormal saltus step of EPN causes search window centre that skew occurs and the Special Handle of Drop Question that causes, thereby get rid of the interference of the false multipath of search, obtain accurately multipath time phase, reduce system cutting off rate.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (7)
1. the method that under fixing search window pattern, search window centre arranges, is characterized in that, comprises the following steps:
Obtain the biasing of the arrival short code the earliest EPN value of reverse traffic frame, as reporting EPN value;
When reporting difference between EPN value and current EPN settings to be greater than default thresholding, according to reporting EPN value, current EPN settings and the default step-length adjustment search window centre that upgrades; The position setting value that described current EPN settings are current search window center; Described default thresholding is for reaching the earliest PN offset change thresholding; The default step-length of upgrading is obtained according to the translational speed of mobile terminal in use scenes, specifically according to the translational speed of mobile terminal in use scenes, estimates the displacement of terminal maximum possible in the time that reaches the earliest PN offset change thresholding; Wherein, according to reporting EPN value, current EPN settings and the default step of upgrading step-length adjustment search window centre specifically to comprise:
Judgement reports the difference between EPN value and current EPN settings whether to be greater than described default renewal step-length;
If report the difference between EPN value and current EPN settings to be greater than described default renewal step-length, judgement reports EPN value whether to be greater than current EPN settings;
If report EPN value to be greater than current EPN settings, current EPN settings are added to the default step-length of upgrading, obtain new current EPN settings;
If report the little current EPN settings of EPN value, current EPN settings are deducted to the default step-length of upgrading, obtain new current EPN settings.
2. method according to claim 1, is characterized in that, the step that judgement reports the difference between EPN value and current EPN settings whether to be greater than described default renewal step-length also comprises afterwards:
If report the difference between EPN value and current EPN settings to be less than the default step-length of upgrading, described in being updated to, described current EPN settings report EPN value, obtain new current EPN settings.
3. method according to claim 1 and 2, is characterized in that, described in obtain the EPN value of reverse traffic frame, before reporting the step of EPN value, also comprise:
Described default thresholding and the default step-length of upgrading are set.
4. method according to claim 3, is characterized in that, described in report EPN value regularly to obtain to arrive the earliest PN offset change sense cycle.
5. the device that under fixing search window pattern, search window centre arranges, is characterized in that, comprising:
Acquisition module, for obtaining the EPN value of reverse traffic frame, as reporting EPN value;
Update module, for when reporting difference between EPN value and current EPN settings to be greater than default thresholding, according to reporting EPN value, current EPN settings and the default step-length adjustment search window centre that upgrades; The position setting value that described current EPN settings are current search window center; Described update module specifically comprises:
Judging unit, for judging whether the difference reporting between EPN value and current EPN settings is greater than described default renewal step-length; And when reporting difference between EPN value and current EPN settings to be greater than described default renewal step-length, judgement reports EPN value whether to be greater than current EPN settings;
Updating block, for when reporting EPN value to be greater than current EPN settings, adds the default step-length of upgrading by current EPN settings, obtains new current EPN settings; And
When reporting the little current EPN settings of EPN value, current EPN settings are deducted to the default step-length of upgrading, obtain new current EPN settings;
Described default thresholding is for reaching the earliest PN offset change thresholding; The default step-length of upgrading is obtained according to the translational speed of mobile terminal in use scenes, specifically according to the translational speed of mobile terminal in use scenes, estimates the displacement of terminal maximum possible in the time that reaches the earliest PN offset change thresholding.
6. device according to claim 5, it is characterized in that, described updating block, also for default while upgrading step-length when reporting difference between EPN value and current EPN settings to be less than, described in current EPN settings are updated to, report EPN value, obtain new current EPN settings.
7. according to the device described in claim 5 or 6, it is characterized in that, described device also comprises module is set, for described default thresholding and the default step-length of upgrading are set.
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| CN201010209095.XA CN101873151B (en) | 2010-06-24 | 2010-06-24 | Method and device for setting search window center in mode of fixing search window |
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| CN201010209095.XA CN101873151B (en) | 2010-06-24 | 2010-06-24 | Method and device for setting search window center in mode of fixing search window |
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| CN101873151B true CN101873151B (en) | 2014-04-30 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6226282B1 (en) * | 1997-12-27 | 2001-05-01 | Hyundai Electronics Ind. Co., Ltd. | Method of searching reverse traffic channels in a CDMA mobile radio communication system |
| CN1308790A (en) * | 1998-05-01 | 2001-08-15 | 艾利森电话股份有限公司 | Search window delay tracking in code division multiple access communication systems |
| CN1859745A (en) * | 2005-12-16 | 2006-11-08 | 华为技术有限公司 | Synchronous method in broad band CDMA network common frequency switching |
| CN101415240A (en) * | 2008-11-26 | 2009-04-22 | 中兴通讯股份有限公司 | Method for regulating search window center and access network |
| WO2009062076A1 (en) * | 2007-11-09 | 2009-05-14 | Qualcomm Incorporated | Method and apparatus for defining a search window based on distance between access points |
| CN101662308A (en) * | 2009-09-29 | 2010-03-03 | 中兴通讯股份有限公司 | Setting method of search window centre and device |
-
2010
- 2010-06-24 CN CN201010209095.XA patent/CN101873151B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6226282B1 (en) * | 1997-12-27 | 2001-05-01 | Hyundai Electronics Ind. Co., Ltd. | Method of searching reverse traffic channels in a CDMA mobile radio communication system |
| CN1308790A (en) * | 1998-05-01 | 2001-08-15 | 艾利森电话股份有限公司 | Search window delay tracking in code division multiple access communication systems |
| CN1859745A (en) * | 2005-12-16 | 2006-11-08 | 华为技术有限公司 | Synchronous method in broad band CDMA network common frequency switching |
| WO2009062076A1 (en) * | 2007-11-09 | 2009-05-14 | Qualcomm Incorporated | Method and apparatus for defining a search window based on distance between access points |
| CN101415240A (en) * | 2008-11-26 | 2009-04-22 | 中兴通讯股份有限公司 | Method for regulating search window center and access network |
| CN101662308A (en) * | 2009-09-29 | 2010-03-03 | 中兴通讯股份有限公司 | Setting method of search window centre and device |
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