CN1549649A - Calling detection method for personal hand-held communication system - Google Patents
Calling detection method for personal hand-held communication system Download PDFInfo
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- CN1549649A CN1549649A CNA031134874A CN03113487A CN1549649A CN 1549649 A CN1549649 A CN 1549649A CN A031134874 A CNA031134874 A CN A031134874A CN 03113487 A CN03113487 A CN 03113487A CN 1549649 A CN1549649 A CN 1549649A
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Abstract
The method includes the following steps: 1 timer T, is started by switching in net unit at network side when calling procedure is under conversation state; 2) time of timer T1 is exceeded; 3) calling detection message is sent by switching in unit at network side to adjacent node and at the same time timer T2 is started; 4) timer T, is restarted if correct calling detection message is received before time of time T2 is not exceeded and to repeat step 2) and 3) until conversation is finished; 5) otherwise, frequency of calling detection is judged and to reexecute step 3) if frequency is less than preset value n; and 6) detection is ended after system resource occupied by the procedure is released if frequency is bigger than preset value n.
Description
Technical field
The present invention relates to PHS is the personal handhold communication system, is specifically related to the calling detection method in a kind of PHS system.
Background technology
Along with the continuous development of PHS (Personal Handset System personal handhold communication system) wireless local telephone system in China, operator is more and more higher for the requirement of the operational reliability of PHS wireless local telephone system.In current PHS system running, after calling enters conversation state, because wireless signal is subjected to environmental interference, cause some link generation communication abnormality on the communication line easily, cause the call treatment process of network side (for example Access Network unit ANU) can not receive the on-hook release message of the call treatment process of the adjacent node (for example base station controller CSC) that is connected with network equipment, network side call treatment process will be hung and can not be discharged, the reason that causes the call treatment process that enters conversation state to be hung comprises: 1, wireless signal be subject to environmental interference, poor stability.2, may there be some blind spots in wireless local telephone system first stage of construction signal coverage, causes signal normally not receive.3, in the busy period of conversation, the communication system information flow is very big, if exceeded the disposal ability of system, the PHS system can abandon part message automatically.Network side call treatment process is hung can cause this to call out the generation Extra-long-conversation-time bills on the one hand, on the other hand, the system resource that this calling takies can not discharge, if there is the resource of a lot of call proceedings all can not be released, then can influence call completing rate, time has been grown and will exhaust system resource, even causes paralysed machine.The consequence of this two aspect is very serious problem to the operation commercial city.Still find no at present and close the correlation technique document that solves the call proceeding that PHS grid side hung.
Summary of the invention
The present invention is hung and causes the problem that system resource can't discharge and propose the calling detection method of a kind of PHS system in order to solve PHS grid side call treatment process, can in time automatically detect the call proceeding that PHS grid side is hung, and discharge occupied system resource, guarantee the reliable and stable operation of system.
Core concept of the present invention is: network side Access Network unit is under the talking state in call proceeding and regularly sends calling detection message to adjacent node, if do not return correct calling detection acknowledge message in the given time, then discharge the system resource that this process takies.
The technical solution adopted in the present invention comprises the following steps:
(1) under call proceeding is in talking state, network side Access Network unit starting timer T1;
(2) timer T1 is overtime;
(3) network side Access Network unit sends calling detection message to adjacent node, starts timer T2 simultaneously;
(4) if before timer T2 is not overtime, receive correct calling detection acknowledge message, then restart timer T1, repeat above-mentioned steps (2) and (3), finish until talking state;
(5) otherwise judge the number of times of calling detection, if the calling detection number of times then re-executes above-mentioned steps (3) less than predefined value n;
(6) if the calling detection number of times finishes after, then discharging the system resource that this process takies more than or equal to predefined value n.
Above-mentioned steps (4) specifically may further comprise the steps again:
(a) judge whether to receive the calling detection acknowledge message;
(b) if receive, then remove timer T2, judge further whether the calling detection acknowledge message is correct, otherwise carry out abovementioned steps (5) in the overtime back of timer T2;
(c) if the calling detection acknowledge message is correct, then restart timer T1, repeat abovementioned steps (2) and (3), finish until talking state;
(d) if calling detection acknowledge message mistake is then carried out abovementioned steps (5).
Above-mentioned " adjacent node " is the base station controller in the PHS system; Described " discharging the system resource that this process takies " comprises that the call proceeding and the releasing network side joint that discharge on the adjacent node go into the occupied resource of net unit.The duration of timer T1 can be made as 1～8 minute, and the preferred value of the n in the step (5) can be 3.
Also comprise personal hand-held device sign PSID in the calling detection message, when adjacent node is received the calling detection message of sending network side Access Network unit, judge whether PSID wherein is consistent with the PSID of current process, if it is consistent, then return correct calling detection acknowledge message, otherwise return wrong calling detection acknowledge message.
Be under the roaming state at personal hand-held device PS, the calling detection message that initiate network side local access network unit is given adjacent node via master controller/Interworking GateWay and roaming place Access Network unit forwards.The Access Network unit, roaming place of network side also can be directly to the adjacent node detect-message that makes a call.
Whether calling detection method of the present invention can in time automatically detect the network side call proceeding and be hung, if the system resource that discharges this process automatically and take is then hung in call proceeding.Adopt calling detection method of the present invention, can avoid the generation of Extra-long-conversation-time bills and PHS system paralysis machine effectively, improved the call completing rate of PHS system, guarantee the PHS system stability, reliably, operation efficiently.
Description of drawings
Fig. 1 is a PHS system configuration schematic diagram;
Fig. 2 is in the calling detection process, the message flow chart between network side and the adjacent node;
Fig. 3 is the detail flowchart of the calling detection method that proposes of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
The call treatment process is meant in calling procedure each time, each node on the communication line, for example PHS mobile phone, base station CS, base station controller CSC, Access Network unit ANU, switch LE, or the like, all needing to create a process on software is realized handles message related to calls and finishes call proceeding, be referred to as the call treatment process, hereinafter to be referred as call proceeding.System resource is meant call treatment and the required resource of call proceeding, comprises CPU, internal memory, T net time slot, circuit time slot etc.Hang and be meant, think that then this call proceeding is hung if call proceeding (comprising the system resource that it takies) can not be released behind end of conversation (user's on-hook) for a long time.
Fig. 1 is a PHS system configuration schematic diagram.Among Fig. 1, PS (Personal Station) is a personal hand-held device, CS (Cell Station) is the base station, CSC (Cell Station Controller) is a base station controller, ANU (AccessNetwork Unit) is the Access Network unit, LE (Local Exchange) is a local switch, and CCM (Center ControlModule) is a Central Control Module, and Central Control Module also can be Interworking GateWay IGW (InterconnectGateWay).As shown in Figure 1, CS1 and CS2 are two base stations, and adjacent node is CSC1 and CSC2, and network side comprises LE, local ANU, roaming ANU and CCM.Base station CS1 or CS2 receive the signal of hand-held set PS, and the Access Network unit ANU that sends network side by adjacent node CSC1 or CSC2 to handles, and ANU will need to exchange again and the signal that transmits is given LE or CCM/IGW handles.Usually the call treatment process of the Access Network unit ANU of network side can not be received the on-hook release message of the call treatment process of adjacent node base station controller CSC in conversation state, and network side call treatment process will be hung and can not be discharged.
Fig. 2 is in the calling detection process, the message flow chart between network side and the adjacent node.Among Fig. 2, CallCheck is a calling detection message, and CallCheckAck is the calling detection acknowledge message.If confirm successfully, return correct CallCheckAck; Otherwise return wrong CallCheckAck.T1 be normal call detection time at interval, referring to begins to converse sends blanking time between the CallCheck for the first time, or receives that correct CallCheckAck is to the blanking time that sends once more between the CallCheck.Usually be set to a few minutes.T2 sends the time that CallCheck waits for CallCheckAck afterwards, is set to several seconds usually.N is the calling detection number of times.Still do not receive correct CallCheckAck if sent n CallCheck, think that then call proceeding is hung.Calling detection is initiated by local ANU of network side or roaming place ANU.If PS carries out local call, then directly send CallCheck initiates local ANU to CSC1 calling detection by local ANU.If PS carries out roaming call, then send CallCheck by local ANU, be transmitted to CSC2 through CCM, roaming place ANU, initiate the calling detection of local ANU; The calling detection of roaming place ANU directly sends CallCheck by roaming place ANU and initiates to CSC2.As shown in Figure 2, after network side (ANU) call proceeding (caller or called) enters conversation state, timer T1 is set, after T1 is overtime, the network side call proceeding sends the call proceeding of CallCheck to adjacent node (CSC), the CallCheckAck that timer T2 waits for the adjacent node call proceeding is set, received that CallCheckAck at first removes timer T2, if correct CallCheckAck, network side thinks that then call proceeding is normal, reset T1, send CallCheck again after T1 is overtime; If wrong CallCheckAck, perhaps T2 does not receive CallCheckAck after overtime yet, the call proceeding of CallCheck to adjacent node will be sent again, and reset T2, if repeatedly overtimely still do not receive correct CallCheckAck, think that then call proceeding is hung, need to send release message to the adjacent node call proceeding, and the occupied resource of releasing network side.
Fig. 3 is the detail flowchart of the calling detection method that proposes of the present invention.As shown in Figure 3, the detailed step of the calling detection method that the present invention proposes is: 1, the network side call proceeding enters talking state, and the calling detection number of times puts 0, starts timer T1, and the duration of timer T1 is set to a few minutes usually.For the system communication that the calling detection function is caused is loaded as far as possible little, need reduce the transmission frequency of CallCheck as far as possible, therefore require T1 long, according to statistical analysis, most of conversation all can finish in a few minutes, if the duration of call less than T1, then can not send CallCheck, thereby significantly reduced the communication traffic of calling detection message.2, timer T1 is overtime, judges whether call proceeding still is in talking state, if, then carry out next step, otherwise process ends.3, network side Access Network unit ANU sends calling detection message CallCheck to adjacent node CSC, and the calling detection number of times adds 1, starts timer T2 simultaneously.Because the duration of timer T1 may cause following problem than length: after the call proceeding on the adjacent node discharges, through after a while, the new call proceeding of creating is consistent with the process number of the original call proceeding that discharges, when this moment, the network side call proceeding sent CallCheck, CallCheckAck is responded in call proceeding meeting new on the adjacent node, may cause calling detection incorrect problem to occur like this, therefore can in calling detection message CallCheck, increase personal hand-held device sign PSID, when adjacent node is received network side CallCheck, to judge whether PSID wherein is consistent with the PSID of current process, if it is consistent, then return correct calling detection acknowledge message, otherwise return wrong calling detection acknowledge message CallCheckAck.If 4 receive correct calling detection acknowledge message before timer T2 is not overtime, then restart timer T1, repeat above-mentioned steps 2 and 3, finish, specifically comprise: the calling detection acknowledge message CallCheckAck that (a) judges whether to receive adjacent node CSC until talking state; (b) if receive, then remove timer T2, judge further whether calling detection acknowledge message CallCheckAck is correct, (refer to step 5) otherwise carry out next step in the overtime back of timer T2; (c) if calling detection acknowledge message CallCheckAck is correct, then restart timer T1, repeat abovementioned steps 2 and 3, finish until talking state; (d) if calling detection acknowledge message CallCheckAck mistake, then carrying out next step is step 5.5 otherwise judge the number of times of calling detection, if the calling detection number of times then re-executes above-mentioned steps 3 less than predefined value n (in a preferred embodiment of the invention, the value of n gets 3).In order to prevent that communication abnormality from causing CallCheck to lose, if the overtime CallCheckAck that does not receive the call proceeding of adjacent node of network side calling detection process, to adopt the mechanism (wherein detecting number of times can be provided with) of repeated detection, think that just call proceeding is hung after promptly repeatedly not receiving CallCheckAck.If received correct CallCheckAck, think that then call proceeding is normal, interval T sends CallCheck after 1 time again, detects again; If 6 calling detection number of times then discharge the system resource that this process takies, process ends more than or equal to predefined value n.
PHS grid side can be divided into local call and roaming call when adopting multi-module structure.When personal hand-held device PS is under the roaming state, the calling detection message CallCheck that network side local access network unit ANU initiates is through being transmitted to adjacent node via master controller CCM or Interworking GateWay IGW by roaming place ANU, simultaneously roaming place ANU also can be directly to the adjacent node detect-message that makes a call.
The calling detection function of PHS system needs network side and the cooperation of its neighbors to finish jointly, consider the system upgrade needs, the opening and closing of a switching variable controlling call measuring ability can be set, this switching variable can be stored in the database file, when system restart, can determine whether needs calling detection function according to switching variable, network side unlatching simultaneously or shutdown call sense switch can not have influence on the operate as normal of adjacent node.
Claims (10)
1, a kind of calling detection method of personal handhold communication system, it is characterized in that: network side Access Network unit is under the talking state in call proceeding and regularly sends calling detection message to adjacent node, if do not return correct calling detection acknowledge message in the given time, then discharge the system resource that this process takies.
2,, it is characterized in that described method specifically comprises the following steps: according to the calling detection method of the described system of claim 1
(1) under call proceeding is in talking state, network side Access Network unit starting timer T1;
(2) timer T1 is overtime;
(3) network side Access Network unit sends calling detection message to adjacent node, starts timer T2 simultaneously;
(4) if before timer T2 is not overtime, receive correct calling detection acknowledge message, then restart timer T1, repeat above-mentioned steps (2) and (3), finish until talking state;
(5) otherwise judge the number of times of calling detection, if the calling detection number of times then re-executes above-mentioned steps (3) less than predefined value n;
(6) if the calling detection number of times finishes after, then discharging the system resource that this process takies more than or equal to predefined value n.
3,, it is characterized in that described step (4) comprises the following steps: according to the calling detection method of the described system of claim 2
(a) judge whether to receive the calling detection acknowledge message;
(b) if receive, then remove timer T2, judge further whether the calling detection acknowledge message is correct, otherwise carry out abovementioned steps (5) in the overtime back of timer T2;
(c) if the calling detection acknowledge message is correct, then restart timer T1, repeat abovementioned steps (2) and (3), finish until talking state;
(d) if calling detection acknowledge message mistake is then carried out abovementioned steps (5).
4,, it is characterized in that described " adjacent node " is base station controller in the personal handhold communication system for PHS according to the calling detection method of the described system of claim 1.
5,, it is characterized in that described " discharging the system resource that this process takies " comprises that the call proceeding and the releasing network side joint that discharge on the adjacent node go into the occupied resource of net unit according to the calling detection method of claim 1 or 2 described systems.
6,, it is characterized in that the duration of described timer T1 can be made as 1～8 minute according to the calling detection method of the described system of claim 2.
7, according to the calling detection method of claim 1 or 2 described systems, it is characterized in that comprising in the described calling detection message personal hand-held device sign PSID, when adjacent node is received the calling detection message of sending network side Access Network unit, judge whether PSID wherein is consistent with the PSID of current process, if it is consistent, then return correct calling detection acknowledge message, otherwise return wrong calling detection acknowledge message.
8, according to the calling detection method of the described system of claim 2, the value that it is characterized in that the n in the described step (5) is 3.
9, according to the calling detection method of the described system of claim 1, it is characterized in that: be under the roaming state at personal hand-held device PS, the calling detection message that initiate network side local access network unit is given adjacent node via master controller/Interworking GateWay and roaming place Access Network unit forwards.
10, according to the calling detection method of the described system of claim 9, it is characterized in that: be under the roaming state at personal hand-held device PS, the Access Network unit, roaming place of network side also can be directly to the adjacent node detect-message that makes a call.
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| CN 03113487 CN1281092C (en) | 2003-05-15 | 2003-05-15 | Calling detection method for personal hand-held communication system |
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| CN 03113487 CN1281092C (en) | 2003-05-15 | 2003-05-15 | Calling detection method for personal hand-held communication system |
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| CN1549649A true CN1549649A (en) | 2004-11-24 |
| CN1281092C CN1281092C (en) | 2006-10-18 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100438690C (en) * | 2005-02-06 | 2008-11-26 | 华为技术有限公司 | The Method of Improving the Calling Channel Utilization Ratio of Voice Broadcasting Service |
| CN100466829C (en) * | 2006-12-30 | 2009-03-04 | 华为技术有限公司 | Method and system for processing call service, MSC server and HLR |
| CN101047622B (en) * | 2006-03-29 | 2010-05-12 | 华为技术有限公司 | A Method for Scheduling System Resources |
| CN1983993B (en) * | 2006-03-29 | 2010-05-12 | 华为技术有限公司 | A method for monitoring system resources |
| CN101202608B (en) * | 2006-12-14 | 2010-10-13 | 联芯科技有限公司 | Method and system for transmitting of affirmation mode data |
| CN104168259A (en) * | 2013-04-19 | 2014-11-26 | 阿瓦亚公司 | Session manager anti-looping |
| CN113472952A (en) * | 2020-03-31 | 2021-10-01 | 深圳市万普拉斯科技有限公司 | Call making method, device, computer equipment and storage medium |
-
2003
- 2003-05-15 CN CN 03113487 patent/CN1281092C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100438690C (en) * | 2005-02-06 | 2008-11-26 | 华为技术有限公司 | The Method of Improving the Calling Channel Utilization Ratio of Voice Broadcasting Service |
| CN101047622B (en) * | 2006-03-29 | 2010-05-12 | 华为技术有限公司 | A Method for Scheduling System Resources |
| CN1983993B (en) * | 2006-03-29 | 2010-05-12 | 华为技术有限公司 | A method for monitoring system resources |
| CN101202608B (en) * | 2006-12-14 | 2010-10-13 | 联芯科技有限公司 | Method and system for transmitting of affirmation mode data |
| CN100466829C (en) * | 2006-12-30 | 2009-03-04 | 华为技术有限公司 | Method and system for processing call service, MSC server and HLR |
| CN104168259A (en) * | 2013-04-19 | 2014-11-26 | 阿瓦亚公司 | Session manager anti-looping |
| CN104168259B (en) * | 2013-04-19 | 2018-12-04 | 极进网络公司 | The anti-circulation of session manager |
| CN113472952A (en) * | 2020-03-31 | 2021-10-01 | 深圳市万普拉斯科技有限公司 | Call making method, device, computer equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| CN1281092C (en) | 2006-10-18 |
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