CN1852501A - Monitoring method for notifying channel load - Google Patents
Monitoring method for notifying channel load Download PDFInfo
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- CN1852501A CN1852501A CN 200610066077 CN200610066077A CN1852501A CN 1852501 A CN1852501 A CN 1852501A CN 200610066077 CN200610066077 CN 200610066077 CN 200610066077 A CN200610066077 A CN 200610066077A CN 1852501 A CN1852501 A CN 1852501A
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Abstract
The invention discloses a method for monitoring load of notification channel (NCH). Being applicable to group call service in GSM network, the method includes steps: base station BTS detects load of NCH; when detecting that load of NCH exceeds threshold setup, BTS reports over loading message of NCH to base station controller BSC. In group call service in GSM network, the invention implements monitor and control for load of NCH.
Description
Technical field
The present invention relates to the trunked call wireless communication technology field, be meant the method for supervising of a kind of notification channel (NCH) load especially.
Background technology
In the GSM network, the Common Control Channel of each sub-district (CCCH) is made up of access grant channel (AGCH), paging channel (PCH), is respectively applied for to send immediate assignment message, beep-page message.Virtual network operator can be in conjunction with the cell telephone traffic model, Common Control Channel configuration (CCCH_CONF) by allocating cell, the message blocks number that is used to send access grant message, beep-page message in each Broadcast Control Channel (BCCH) multi-frame is set, the bearing capacity of balance AGCH channel and PCH channel is optimized network quality.
In the GSM network system running, BTS detects the load condition of AGCH channel, PCH channel in real time, when overload appears in above-mentioned channel, BTS periodically reports Common Control Channel overload message (CCCH LOAD INDICATION) to BSC, the BSC that receives message reports mobile switching centre (MSC) unusually with this, is handled by the Flow Control that MSC is correlated with to the GSM network system.Virtual network operator also can be according to this abnormal case, and the CCCH channel configuration of time update sub-district improves network quality.
In the GSM network of supporting VGCS/VBS (speech group-calling service/Voice Broadcast Service) trunked call, the CCCH channel of each sub-district is made up of AGCH channel, PCH channel, notification channel (NCH), is respectively applied for to send immediate assignment message, beep-page message, notification message.At present, support the monitoring mechanism of the GSM network shortage of VGCS/VBS trunked call at NCH channel load situation, Virtual network operator can't be recognized the load condition of NCH channel, influences the optimization and the adjustment of CCCH channel parameter, is unfavorable for promoting network quality.
Summary of the invention
In view of this, main purpose of the present invention has been to provide a kind of method for supervising of NCH channel, so that in the trunked call service of GSM network, realize the monitoring to the NCH channel load.
The method for supervising of notification channel NCH provided by the invention load is used for the trunked call service of GSM network, comprising:
Base station BTS detects the load condition of NCH channel;
BTS detects the NCH channel load and exceeds when setting thresholding, reports NCH channel overload message to base station controller BSC.
Wherein, described trunked call service is speech group-calling service VGCS or Voice Broadcast Service VBS.
Wherein, the described NCH of detecting channel load exceeds the step of setting thresholding and comprises: BTS detects the new notification message that receives and waits for whether the duration of scheduling transmission first surpasses the thresholding of setting, if expression NCH channel load exceeds the setting thresholding.
Wherein, the described NCH of detecting channel load exceeds the step of setting thresholding and comprises: whether the time interval that BTS detects the double scheduling transmission of same the notification message that receives surpasses the setting thresholding, if expression NCH channel load exceeds the setting thresholding.
Wherein, describedly report NCH channel overload message for periodically reporting to base station controller BSC.
Wherein, described NCH channel overload message bearing is in Common Control Channel overload message CCCHLOAD INDICATION message.
Wherein, the step of described carrying comprises: newly-increased NCH channel overload NCH Load cell in CCCH LOAD INDICATION message; NCH Load cell comprises:
Component identification Element Identifier is used to identify NCH Load cell;
Notice buffering area Notification Buffer Space is used for identifying the quantity that can also hold notification message in the Common Control Channel CCCH buffering area of this sub-district.
Wherein, this method further comprises: BSC transmits the overload message OVERLOAD that indication NCH channel transships to moving exchanging center MSC after receiving described NCH channel overload message, is handled by MSC.
Wherein, this method further comprises: after BSC receives described NCH channel overload message, to the O﹠amp of operation maintenance center; M transmits the message of indication NCH channel overload, by O﹠amp; M handles.
Wherein, described processing comprises: in some cycles, reduce the trunked call service load of current area, and normal up to the NCH channel load.
As seen from the above, the present invention is in the trunked call service of GSM network, in the VGCS/VBS trunked call service, BTS can detect in real time to the NCH channel load, and when detecting the NCH channel load, in time report BSC, and report MSC or O﹠amp by BSC above certain thresholding; M to do corresponding processing, reduces traffic carrying capacity as control and reduces the NCH channel load, perhaps carries out reasonable configuration Common Control Channel parameter by operator, thereby reaches the purpose that promotes network quality.
Description of drawings
Fig. 1 is a NCH channel monitoring flow chart of the present invention.
Embodiment
The present invention can in time offer BSC by BTS in order to make NCH channel overload situations, at first, the CCCH LOAD INDICATION message that BTS is sent to BSC is changed, shown in the italics in the following table 1, in this message, increase NCH channel overload (NCH Load) cell newly, be used to transmit the load condition of NCH channel.Following table 1 is the specific descriptions of CCCH LOADINDICATION message provided by the invention:
| INFORMATION ELEMENT (cell) | The REFERENCE reference | The PRESENCE existing way | The FORMAT coded format | LENGTH length |
| Message discriminator (message semantic definition) | 9.1 | M is necessary | The V value | 1 |
| Message type (type of message) | 9.2 | M | V | 1 |
| Channel number (note) (channel quantity) | 9.3.1 | M | TV type-value | 2 |
| RACH Load (RACH overload) | 9.3.18 | C is optional | The TLV type-length-value | ＞＝8 |
| Paging Load | 9.3.15 | C | TV | 3 |
| (paging overload) | ||||
| NCH Load (NCH channel overload) | C | TV type-value | 3 |
Table 1
Wherein, the NCH Load cell shown in the table 1 is optional cell, is only judging under the NCH channel load overload situations, when BTS sends CCCH LOAD INDICATION message to BSC, just need carry this cell in CCCH LOAD INDICATION message.Shown in this NCH Load cell structure table 2 specific as follows:
| 8 7 6 5 4 3 2 1 | |
| Element Identifier (component identification) | 1 |
| 2 | |
| Notification Buffer Space (notice buffer area) | 3 |
Table 2
Wherein, it is NCH Load cell that the Element Identifier in the table 2 is used to identify this message, and value is 0x3F among the present invention, sign NCH Load cell.
Notification Buffer Space is used for identifying the quantity that can also hold notification message in the CCCH buffering area of this sub-district, is a value of encoding in the binary numeral mode.After encoding in the binary numeral mode, the quantity of the notification message that BTS can also hold this sub-district CCCH buffering area inserts this position.
Below, referring to the flow chart shown in Fig. 1, NCH channel load provided by the invention is detected and the method that reports is elaborated, may further comprise the steps:
Step 101:BTS detects the load condition of NCH channel in real time.Wherein, NCH channel load thresholding, the sense cycle parameter can be by (the O﹠amp of operation maintenance center; M) carry out concrete configuration, detection algorithm need be determined in conjunction with the specific implementation of BTS.
For example, the example that the NCH channel load is detected: BTS newly receives a notification message from BSC, and this notification message is waited for scheduling, so that send eating dishes without rice or wine, when waiting for that scheduling time surpasses the setting thresholding, expression NCH channel overload causes in time sending this notification message.
Again for an example that the NCH channel load is detected:, function such as enter to support to lag because in the lifetime that VGCS/VBS calls out, its notification message is periodically to send.Therefore BTS can detect the time interval of the double scheduling transmission of paid-in same notification message, if surpass when setting thresholding, explanation is because NCH channel overload causes and can't in time send a notification message.
After step 102:BTS detects the threshold value that the NCH channel load exceeds setting, report CCCH LOAD INDICATION message to BSC, wherein, carry the NCHLoad cell shown in the table 2 in this message, with notice NCH channel overload situations, comprise the quantity that to hold notification message in the CCCH buffering area of this sub-district in this overload situations.Wherein, CCCH LOAD INDICATION message can periodically report.
Step 103: after BSC receives the NCH channel overload indication that BTS reports, report overload Indication message (OVERLOAD) to MSC, wherein carry former because " NCH channel overload ", this cause value is defined as 0x2A among the present invention.
Step 104: after MSC received described message, judging was after the NCH channel transships, and the Flow Control that the GSM network system is correlated with is handled.For example, can in some cycles, reduce service load quantity, so that traffic load reduces, if still the NCH channel transships, further in another fixed cycle, reduce service load quantity, then so that traffic load further reduces, the rest may be inferred, normal up to the NCH channel load.Handle about Flow Control, non-the present invention pays close attention to content, repeats no more.
Certainly, BSC also can give O﹠amp with NCH channel overload information reporting; M, prompting administrative staff handle, and rationally adjusts the CCCH configuration of sub-district, promotes NCH channel bearing ability, promotes network quality.
By said method as seen, adopt the present invention to monitor NCH channel load situation in real time, when the NCH channel transships, can notify MSC as early as possible or/and O﹠amp; M so that NCH channel overload situations is handled, as carries out Flow Control etc., to reduce traffic load, avoids causing that because of NCH channel overload the user that the message of can not normally issuing a notice causes can't insert trunked call service.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, the method for supervising of a kind of notification channel NCH load is used for the trunked call service of GSM network, it is characterized in that, comprising:
Base station BTS detects the load condition of NCH channel;
BTS detects the NCH channel load and exceeds when setting thresholding, reports NCH channel overload message to base station controller BSC.
2, method according to claim 1 is characterized in that, described trunked call service is speech group-calling service VGCS or Voice Broadcast Service VBS.
3, method according to claim 1 is characterized in that, the described NCH of detecting channel load exceeds the step of setting thresholding and comprises:
BTS detects the new notification message that receives and waits for whether the duration of scheduling transmission first surpasses the thresholding of setting, if expression NCH channel load exceeds the setting thresholding.
4, method according to claim 1 is characterized in that, the described NCH of detecting channel load exceeds the step of setting thresholding and comprises:
Whether the time interval that BTS detects the double scheduling transmission of same the notification message that receives surpasses the setting thresholding, if expression NCH channel load exceeds the setting thresholding.
5, method according to claim 1 is characterized in that, describedly reports NCH channel overload message for periodically reporting to base station controller BSC.
6, method according to claim 1 is characterized in that, described NCH channel overload message bearing is in Common Control Channel overload message CCCH LOAD INDICATION message.
7, method according to claim 6 is characterized in that, the step of described carrying comprises:
Newly-increased NCH channel overload NCH Load cell in CCCH LOAD INDICATION message; NCH Load cell comprises:
Component identification Element Identifier is used to identify NCH Load cell;
Notice buffering area Notification Buffer Space is used for identifying the quantity that can also hold notification message in the Common Control Channel CCCH buffering area of this sub-district.
8, method according to claim 1 is characterized in that, this method further comprises:
BSC transmits the overload message OVERLOAD that indication NCH channel transships to moving exchanging center MSC after receiving described NCH channel overload message, is handled by MSC.
9, method according to claim 1 is characterized in that, this method further comprises:
After BSC receives described NCH channel overload message, to the O﹠amp of operation maintenance center; M transmits the message of indication NCH channel overload, by O﹠amp; M handles.
10, according to Claim 8 or 9 described methods, it is characterized in that described processing comprises:
In some cycles, reduce the trunked call service load of current area, normal up to the NCH channel load.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011006391A1 (en) * | 2009-07-17 | 2011-01-20 | 中兴通讯股份有限公司 | Method and base station for channel request control |
| CN102438208A (en) * | 2011-10-20 | 2012-05-02 | 中兴通讯股份有限公司 | Method and system for controlling common channel of trunking communication system |
| CN101014173B (en) * | 2006-12-31 | 2012-07-18 | 姜宏伟 | Method and system for transmitting monitoring data of communication base station |
| CN102802159A (en) * | 2011-05-25 | 2012-11-28 | 中兴通讯股份有限公司 | Regulation method and system for configuration of common control channel, and base station controller |
| WO2012174809A1 (en) * | 2011-06-24 | 2012-12-27 | 中兴通讯股份有限公司 | Method and device for controlling page traffic in cdma system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6690931B2 (en) * | 1998-03-25 | 2004-02-10 | Lg Information & Communications, Ltd. | Method of doing a broadcast service of a short message in a communication system |
| CN100512051C (en) * | 2003-09-04 | 2009-07-08 | 三星电子株式会社 | Apparatus and method for reducing paging channel loading for broadcast multicast services in a wireless network |
-
2006
- 2006-03-29 CN CNB2006100660774A patent/CN100391277C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101014173B (en) * | 2006-12-31 | 2012-07-18 | 姜宏伟 | Method and system for transmitting monitoring data of communication base station |
| WO2011006391A1 (en) * | 2009-07-17 | 2011-01-20 | 中兴通讯股份有限公司 | Method and base station for channel request control |
| CN102802159A (en) * | 2011-05-25 | 2012-11-28 | 中兴通讯股份有限公司 | Regulation method and system for configuration of common control channel, and base station controller |
| WO2012159501A1 (en) * | 2011-05-25 | 2012-11-29 | 中兴通讯股份有限公司 | Method and system for adjusting common control channel configuration and base station controller |
| CN102802159B (en) * | 2011-05-25 | 2015-09-16 | 中兴通讯股份有限公司 | The method of adjustment that a kind of Common Control Channel configures, system and base station controller |
| WO2012174809A1 (en) * | 2011-06-24 | 2012-12-27 | 中兴通讯股份有限公司 | Method and device for controlling page traffic in cdma system |
| CN102438208A (en) * | 2011-10-20 | 2012-05-02 | 中兴通讯股份有限公司 | Method and system for controlling common channel of trunking communication system |
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| CN100391277C (en) | 2008-05-28 |
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Granted publication date: 20080528 Termination date: 20140329 |