CN1505298A - A method for realizing batch control node tracing grouped data service node time - Google Patents
A method for realizing batch control node tracing grouped data service node time Download PDFInfo
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- CN1505298A CN1505298A CNA021511225A CN02151122A CN1505298A CN 1505298 A CN1505298 A CN 1505298A CN A021511225 A CNA021511225 A CN A021511225A CN 02151122 A CN02151122 A CN 02151122A CN 1505298 A CN1505298 A CN 1505298A
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Abstract
The invention relates to a method for tracing group data service joint time with group control joint automatically, concretely relates to create a control flow of A10 connection between group control joint and group data service joint when mobile station creates group data service in CDMA system. When the difference of time with detected group data service joint is big enough to reject the A10 connection application in the process when group control joint creates A10 connection, the invention will trace the time of group data service joint automatically.
Description
Technical field
The present invention relates to a kind of realization group controlled node (PACKET CONTROL FUNCTION, PCF) follow the tracks of group data service node (PDSN) time method, when being specifically related to that travelling carriage is set up Packet data service in cdma system, set up the control flow that A10 is connected between PCF and the PDSN, particularly in cdma system PCF from the time method of motion tracking PDSN the method for PCF and the automatic his-and-hers watches of PDSN (or be called).
Background technology
Group controlled node (PCF) is set up A10 to group data service node (PDSN) request and is connected by sending the A11 register request message, attacks PDSN in order to prevent some disabled users, in the A11 register request message with on the current time of PCF.PDSN judges at first whether the PCF time in this A11 register request message is enough near with the current time of PDSN after the A11 register request message of receiving from PCF, if meet the demands, just loopback A11 register request message confirms to set up the A10 connection; Otherwise PDSN connects loopback A11 register request message refusal A10.
Because what PCF used is accurate GPS (global positioning system) time, and PDSN is the logical main frame of a Daepori on the network, and after operation after a while, both time there are differences probably, sets up failure thereby cause A10 to connect.A kind of method is at PCF, a NTP (NTP (Network Time Protocol)) server is installed in the network of PDSN, PCF and PDSN are as NTP client, but this method has not only strengthened the realization difficulty of PCF software, improved requirement to PDSN software, and increased the intrinsic network overhead of RP interface, also increased cost in addition.
Summary of the invention
Purpose of the present invention provides a kind of PCF from motion tracking PDSN time method just in order to address the above problem.
The present invention is achieved in that a kind of realization PCF follows the tracks of the PDSN time method, comprises the steps: at least
Time variable of definition on PCF, it is poor to be used for the system time that writes down between PCF and a certain PDSN;
When PCF restarts, the PCF initialization, the system time difference that makes PCF and a certain PDSN is 0.
Described when a travelling carriage is set up data service by this PCF, PCF sends to a certain PDSN and steps on
The note request message, the current system time that time word segment value wherein is set to PCF adds time variable.
After described PDSN receives register request message from this PCF, at first check time word wherein
Segment value, discovery is too big with the time phase difference of PDSN self, and register request message is unacceptable, will show the timing error on the PCF to PCF loopback enrollment response message, and the time word segment value of this message is set to the current system time of PDSN.
Described PCF is in the enrollment response message of receiving from this PDSN, and the difference of PDSN time in current time that time variable is PCF and this enrollment response message is set.
Described PCF sends register request message to this PDSN once more, and the current system time that time word segment value wherein is set to PCF adds time variable, and this moment, this time value should satisfy the requirement of this PDSN to connecting.
After described PDSN received once more register request message, to PCF loopback enrollment response message, expression connected
Connect and set up success.
Described after operation after a while, time between PCF and this PDSN is when producing bigger deviation again, by the register request message between a PCF and this PDSN, PCF can keep the consistent of time word segment value and this PDSN time in the register request message again automatically.
Effect of the present invention: make PCF in setting up the A10 connection procedure, if detect with the time difference of PDSN big to making the A10 connection request be rejected, will be from the time of motion tracking PDSN.
Embodiment
The PCF that the present invention proposes follows the tracks of the PDSN time method, may further comprise the steps:
1. the current system time of hypothesis PCF is Tpcf, the current system time of a certain PDSN is Tpdsn, variable Tpp of definition is used for writing down the time difference (Tpp=Tpdsn-Tpcf) with a certain PDSN on PCF, and when PCF restarted, the time difference Tpp of PCF initialization and a certain PDSN was 0.
2. when a travelling carriage was set up data service by this PCF, PCF sent the A11 register request message to a certain PDSN, and the current system time that time word segment value wherein is set to PCF adds time difference Tpp.
3. after this PDSN receives A11 register request message from this PCF, at first check time word segment value wherein, find with the time phase difference of PDSN self too big, message is unacceptable, will be to PCF loopback A11 enrollment response message, show the timing error on the PCF, and the time word segment value of this message is set to the current system time of PDSN.
4.PCF in the A11 enrollment response message of receiving from this PDSN, find that PDSN thinks that the system time of PCF is inaccurate, to start PCF from the program of motion tracking PDSN time, the difference of PDSN time in current time that Tpp is PCF and this A11 enrollment response message will be set.
5.PCF send the A11 register request message to this PDSN once more, the current system time that time word segment value wherein is set to PCF adds time difference Tpp, this moment, this time value should satisfy the requirement of this PDSN to connecting.
6. after this PDSN received this A11 register request message, to PCF loopback A11 enrollment response message, expression connects had set up success.
When after operation after a while, time between PCF and this PDSN is when producing bigger deviation again, by the register request message between a PCF and this PDSN, PCF can start the program with the PDSN his-and-hers watches again automatically, keeps the consistent of time word segment value and this PDSN time in the A11 message.
The method that the present invention proposes is easy to expand to the situation that a PCF links to each other with a plurality of PDSN.Suppose that PCF need link to each other with N PDSN, as long as the PCF side is Tpp[N of definition] array, the time difference of each array member record itself and one of them PDSN, i.e. Tpp[i]=Tpdsn[i]-Tpcf.When i PDSN sends message, as long as the time word segment value in the message is made as Tpcf+Tpp[i].
Meaning of the present invention is to take minimum resource, simply and has efficiently solved maintenance The problem of PCF and PDSN time consistency, and have good autgmentability.
Among the PCF that has been applied to actual cdma system that the present invention is successful, and obtained very Good practical application effect.
Claims (7)
- Realize group controlled node tracking group data service node time method, comprise the steps: at least for 1 one kindsTime variable of definition on group controlled node, it is poor to be used for the system time that writes down between group controlled node and a certain group data service node;When group controlled node restarts, the group controlled node initialization, the system time difference that makes group controlled node and a certain group data service node is 0.
- 2 realize group controlled node tracking group data service node time method according to claim 1, it is characterized in that:It is described when a travelling carriage is set up data service by this group controlled node, group controlled node sends register request message to a certain group data service node, and the current system time that time word segment value wherein is set to group controlled node adds time variable.
- 3 realize group controlled node tracking group data service node time method according to claim 1, it is characterized in that:After described group data service node receives register request message from this group controlled node, at first check time word segment value wherein, find with the time phase difference of group data service node self too big, register request message is unacceptable, will be to group controlled node loopback enrollment response message, show the timing error on the group controlled node, and the time word segment value of this message is set to the current system time of group data service node.
- 4 realize group controlled node tracking group data service node time method according to claim 1, it is characterized in that:Described group controlled node is in the enrollment response message of receiving from this group data service node, and the difference of group data service node time in current time that time variable is a group controlled node and this enrollment response message is set.
- 5 realize group controlled node tracking group data service node time method according to claim 1, it is characterized in that:Described group controlled node sends register request message to this group data service node once more, the current system time that time word segment value wherein is set to group controlled node adds time variable, and this moment, this time value should satisfy the requirement of this group data service node to connecting.
- 6 realize group controlled node tracking group data service node time method according to claim 1, it is characterized in that:After described group data service node was received once more register request message, to group controlled node loopback enrollment response message, expression connects had set up success.
- 7 realize group controlled node tracking group data service node time method according to claim 1, it is characterized in that:Described after operation after a while, time between group controlled node and this group data service node is when producing bigger deviation again, by the register request message between a group controlled node and this group data service node, group controlled node can keep the consistent of time word segment value and this group data service node time in the register request message again automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021511225A CN1505298A (en) | 2002-12-02 | 2002-12-02 | A method for realizing batch control node tracing grouped data service node time |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA021511225A CN1505298A (en) | 2002-12-02 | 2002-12-02 | A method for realizing batch control node tracing grouped data service node time |
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| CN1505298A true CN1505298A (en) | 2004-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101779494B (en) * | 2007-08-16 | 2015-03-25 | 株式会社Ntt都科摩 | Handover control method, wireless base station, and mobile station |
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2002
- 2002-12-02 CN CNA021511225A patent/CN1505298A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101779494B (en) * | 2007-08-16 | 2015-03-25 | 株式会社Ntt都科摩 | Handover control method, wireless base station, and mobile station |
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