CN103607725A - A method for realizing 2G wireless signaling channel occupation analysis based on a Gb interface signaling - Google Patents
A method for realizing 2G wireless signaling channel occupation analysis based on a Gb interface signaling Download PDFInfo
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Abstract
The invention discloses a method for realizing 2G wireless signaling channel occupation analysis based on a Gb interface signaling. The method comprises the following steps: a user surface data transmission process in a conversation is monitored at a Gb interface; wireless signaling channel occupation conditions are determined through an MS mobility management state migration process; and through recording an application IP address carried in a user plane data message, a corresponding relation between a domain name and the application IP address is obtained by means of combining an DNS signaling, so that a specific application type is found out. Through the method for realizing the 2G wireless signaling channel occupation analysis based on the Gb interface signaling of the invention, aiming at limitations in existing analysis schemes, through a Gb interface control plane signaling, and combined with Gb interface user plane data, in-depth analysis is carried out on GPRS network packet data channel occupation conditions and occupation reasons.
Description
Technical field
The present invention relates to wireless communication field, particularly a kind of method that realizes the analysis of 2G wireless signaling channel occupancy based on Gb Interface signaling.
Background technology
Radio channel resource is the most important resource of mobile communications network, and along with mobile data services fast development, GPRS network Packet Data Channel resource optimization becomes the most important thing of operator network management.Packet Data Channel is mainly divided into two classes: packet traffic channel and packet control channel (being signaling channel), packet control channel comprises: Broadcast Control Channel (BCCH), Common Control Channel (PCH, RACH, AGCH), Dedicated Control Channel (ACCH, TCCH).Taking of Common Control Channel in packet control channel can directly affect equipment of the core network load, for Common Control Channel optimization, analyzes and becomes one of main direction of GPRS network optimization.
Packet Data Channel resource management is mainly by the PCU(Packet Control Unit in BSC, packet control unit) complete, therefore present stage is for the main Abis interface based between BTS-BSC of Packet Data Channel analysis, or the realization of the Gb Interface between BSC-SGSN, relevant interface distributes can be referring to Fig. 1.
Abis interface is many, and by TDM or SDH transmission bearer, acquisition cost is high, and protocol analysis is complicated, is difficult to large-scale promotion, and in fact Domestic Carriers does not realize based on Abis interface the commercial case that GPRS network Packet Data Channel is analyzed.
The scheme that present stage is realized the analysis of GPRS network Packet Data Channel based on Gb Interface mainly realizes by analyzing Gb Interface chain of command signaling, this scheme can be analyzed GPRS network Packet Data Channel and take situation, but with user face data association analysis, therefore cannot not know that specifically which kind of business conduct produces Radio Resource and takies due to.
Above-mentioned two schemes is all based on Signaling Layer surface analysis, all, not in conjunction with user face data association analysis, cannot locate the concrete reason that causes that Radio Resource takies.
Summary of the invention
In view of problems of the prior art, the object of the invention is to provide a kind of and realizes based on Gb Interface signaling the method that 2G wireless signaling channel occupancy is analyzed, thereby the limitation existing for existing analytical plan, by Gb Interface chain of command signaling, in conjunction with Gb Interface user face data, GPRS network Packet Data Channel is taken situation and takies reason and analyse in depth.
According to an aspect of the present invention, provide a kind of and realized based on Gb Interface signaling the method that 2G wireless signaling channel occupancy is analyzed, comprised step:
User plane data transfer process in a session of Gb Interface monitoring, by MS mobility management states transition process, judgement wireless signaling channel occupancy situation;
By the application IP address of carrying in recording user face data-message, in conjunction with DNS signaling, know domain name and the corresponding relation of applying IP address, know concrete application type.
Preferably, the determination methods that data service upstream message initiation signaling channel takies comprises:
User face data in a session of Gb Interface monitoring, and record is without transfer of data duration, if in the READY TIMER period of setting without transfer of data, can be judged as travelling carriage has moved to STANDBY state, if follow-up, there is upstream data bag to send, think that travelling carriage has moved to READY state, can be identified as RACH, AGCH channel occupancy.
Preferably, the determination methods that data service downstream message initiation signaling channel takies comprises:
If monitor PAGING message at Gb Interface, travelling carriage returns to PAGING response, can be judged as travelling carriage by STANDBY state transition to READY state, will produce subsequently downlink data packet transmission, can be identified as PCH, a RACH, AGCH channel occupancy.
Preferably, about REDAY TIMER value, be described as follows: SGSN records the REDAY TIMER of each travelling carriage, if travelling carriage adhering to, the Routing Area Update stage initiates READY TIMER request, SGSN returns to response confirmation according to actual conditions and whether by travelling carriage requirement, sets its READY TIMER, travelling carriage is not initiated in the situation of READY TIMER request, the overall READYTIMER that uses SGSN to set.
Preferably, according to SGSN response, dynamically update a travelling carriage READY TIMER setting table, this literary name section at least comprises following field:
Mobile station identification, cellphone subscriber's IMSI, takes from and adheres to or the descending BSSGP layer of Routing Area Update process message;
The Data Update time, extract for the last time adhering to or the Routing Area Update process end time of READY TIMER value;
READY TIMER set point, in the situation that user sets voluntarily, takes from and adheres to or Routing Area Update is accepted message; User does in situation about initiatively setting, and uses unified overall READY TIMER.
Preferably, travelling carriage READY TIMER setting table possesses information from maintenance function, can delete inactive users record according to setting the period.
Preferably, by TLLI and network element IP, judge a session, and data cached, if the timestamp of the last item data to current time interval surpasses after default READY TIMER in session cache, judge that this user mobility controlled state has moved to STANDBY, if follow-up, have upstream message to occur, judge at RACH of article one message time point generation, AGCH channel occupancy, at this time point, open a signaling channel simultaneously and take record, record field information comprises:
(1) Channel holding time: after STANDBY state, article one upstream message time;
(2) trigger reason: upstream message triggers;
(3) subscriber identity information: the IMSI of the BSSGP layer message extraction based on downlink data;
(4) customer position information: the LAC/CI of the BSSGP layer message extraction based on upstream data;
(5) trigger the business information that signaling channel takies: after STANDBY state, the application IP that article one upstream message is carried, follow-up will be according to this IP finishing service type identification.
Preferably, poll detects PAGING message, if PAGING response detected, can judge generation PCH, a RACH, AGCH channel occupancy, the associated same session data bag of TLLI by the P-TMSI in PAGING message with BSSGP layer in follow-up data bag, wherein the first upstream data bag is PAGING response, by first downlink data packet associated services, to learn the business IP that triggers paging;
In detection PAGING message, open a signaling channel at this time point simultaneously and take record, record field information comprises:
(1) Channel holding time: PAGING message issues the time;
(2) trigger reason: downstream message triggers;
(3) subscriber identity information: the IMSI of the BSSGP layer message extraction based on first downlink data packet after page response;
(4) customer position information: the LAC/CI extracting based on page response packet BSSGP layer;
(5) trigger the business information that signaling channel takies: based on first downlink data packet application layer object source IP after page response, extract.
Preferably, by DNS signaling, set up application IP, domain name, the type of service mapping table of a Dynamic Maintenance, the application layer IP that the signaling channel that uplink and downlink business triggers takies in analytic process record can be associated with concrete type of service by this table, and for confirmation is which kind of business causes signaling channel to take.
Accompanying drawing explanation
Fig. 1 is exemplified with the interface type between 2G Wireless Communication Equipment in prior art;
Fig. 2 causes exemplified with the embodiment of the present invention data service upstream message decision flow chart that packet control channel (being signaling channel) takies determination methods;
Fig. 3 causes exemplified with the embodiment of the present invention data service downstream message decision flow chart that packet control channel (being signaling channel) takies determination methods;
Fig. 4 adheres to exemplified with the embodiment of the present invention or the descending BSSGP layer of Routing Area Update process message schematic diagram;
Fig. 5 is exemplified with the extraction schematic diagram of embodiment of the present invention Data Update time;
The signaling channel that Fig. 6 triggers uplink service exemplified with the embodiment of the present invention takies the schematic diagram of analytic process;
The signaling channel that Fig. 7 triggers downlink business exemplified with the embodiment of the present invention takies the schematic diagram of analytic process;
Fig. 8 is known the schematic diagram of application type exemplified with the embodiment of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage are become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
For guaranteeing that GPRS network Radio Resource is rationally used, 3GPP standard has been set IDLE, STANDBY, tri-kinds of states of READY for mobile management, MS(travelling carriage) when transfer of data, be in READY state, owing to wasting resource at READY state, system definition READY TIMER timer within a period of time (0-200S), enter STANDBY state, under STANDBY state, radio channel resource will be released.When having transfer of data again, MS(travelling carriage) will move to READY state, during state transition by packet control channel (being signaling channel) allocation packets traffic channel resource.In existing network, some OTT business, PUSH business adopt the long heartbeat maintenance mechanism that connects of TCP, the use of this type of business will make MS(travelling carriage) frequently at STANDBY state, between READY state, switch, cause packet control channel (being signaling channel) resource to take in a large number.Along with mobile Internet high speed development, smart mobile phone is universal gradually, some smart mobile phone is considered based on economize on electricity, the meeting shorter READY TIMER in automatic request time interval, in addition the software of installing on smart mobile phone much all adopts the factors such as normal online mode, very easily cause packet control channel (being signaling channel) resource and excessively take (being signaling storm), cause GSPS equipment of the core network (being mainly BSC equipment) fault.
In conjunction with the above content of discussing, packet control channel (the being signaling channel) situation of taking that this programme causes mainly for data is done labor.
Data service initiation packet control channel (being signaling channel) takies judgement and is divided into upstream message triggering and two kinds of modes of downstream message triggering.With regard to two kinds of modes, illustrate respectively below:
Data service upstream message causes judgement flow process that packet control channel (being signaling channel) takies determination methods as shown in Figure 2:
User face data in a session of Gb Interface monitoring, and record is without transfer of data duration, if in the READY TIMER period of setting without transfer of data, can be judged as travelling carriage has moved to STANDBY state, if follow-up, there is upstream data bag to send, think that travelling carriage has moved to READY state, can be identified as RACH, AGCH channel occupancy.
Data service downstream message causes judgement flow process that packet control channel (being signaling channel) takies determination methods as shown in Figure 3:
If monitor PAGING message at Gb Interface, and MS(travelling carriage) return to PAGING response, can be judged as MS(travelling carriage) by STANDBY state transition to READY state, will produce subsequently downlink data packet and send, can be identified as PCH, a RACH, AGCH channel occupancy.
Preferably, in actual applications, SGSN records each MS(travelling carriage) REDAY TIMER, according to standard, arrange, MS(travelling carriage) can be adhering to, the Routing Area Update stage initiates READY TIMER request, whether SGSN returns to response confirmation by MS(travelling carriage according to actual conditions) its READYTIMER of requirement setting, MS(travelling carriage) do not initiate in the situation of READY TIMER request the overall READY TIMER that uses SGSN to set.
According to above situation, preferably, first the present invention can set the READY TIMER value consistent with SGSN overall situation READY TIMER, for MS(travelling carriage) initiate the situation of READY TIMER request, also need the response according to SGSN, dynamically updating a MS(travelling carriage) READY TIMER sets table, and this literary name section at least comprises following field:
MS(travelling carriage) sign, cellphone subscriber's IMSI, takes from and adheres to or the descending BSSGP layer of Routing Area Update process message, as shown in Figure 4;
The Data Update time, extract for the last time adhering to or the Routing Area Update process end time of READY TIMER value, as shown in Figure 5;
READY TIMER set point, in the situation that user sets voluntarily, takes from and adheres to or Routing Area Update is accepted message; User does in situation about initiatively setting, and uses unified overall READY TIMER.
MS(travelling carriage) READY TIMER setting table possesses information from maintenance function, can delete inactive users record according to setting the period.Such as: setting the period is: 7 days, if a certain user data update time is the data before 7 days, delete this record, program will not followed the tracks of this user.
In the present invention, can identify or a user conversation of network element IP judgement by TLLI junction link, and buffer memory session data content, as follow-up countless according to judgement and traffic identification demand.
Gb link for IP carrying, judges a session by TLLI and network element IP (BSC IP, SGSN IP), and data cached.
Gb link for TDM carrying, judges a session by TLLI and network element IP (BSC IP, SGSN IP), and data cached.
TLLI(temporary logical link sign): for identifying uniquely a logical links between MS and SGSN in a Route Area.In a Route Area, TLLI and IMSI are corresponding one by one.
In a user conversation process, according to adjacent two message time differences, in conjunction with overall READY TIMER and MS(travelling carriage) READY TIMER sets the value of table, judgement MS(travelling carriage) mobility management states migration.Program should be set timeout mechanism, guarantees that synthetic result is normal.
Example: suppose that overtime duration is set as: 7200 seconds, the last item message surpassed after 7200 seconds as countless certificates still in a user conversation process, closes this session cache.
With TLLI junction link sign or network element IP as condition, open the data buffer storage of each session, for each session cache, the BSSGP layer message based on downlink data completes identity information: IMSI extracts, and the BSSGP layer message completing place information based on upstream data: the extraction of LAC, CI.According to IMSI inquiry MS(travelling carriage) READY TIMER sets table, if IMSI is not in showing, uses overall READYTIMER.
If the timestamp of the last item data to current time interval surpasses after default READYTIMER in session cache, judge that this user mobility controlled state has moved to STANDBY, if follow-up, there is upstream message to occur, judge at RACH of article one message time point generation, AGCH channel occupancy, at this time point, open a signaling channel simultaneously and take record, record field information comprises:
(1) Channel holding time: after STANDBY state, article one upstream message time;
(2) trigger reason: upstream message triggers;
(3) subscriber identity information: the IMSI of the BSSGP layer message extraction based on downlink data;
(4) customer position information: the LAC/CI of the BSSGP layer message extraction based on upstream data;
(5) trigger the business information that signaling channel takies: after STANDBY state, the application IP that article one upstream message is carried, follow-up will be according to this IP finishing service type identification.
The signaling channel that Fig. 6 triggers uplink service exemplified with the embodiment of the present invention takies the schematic diagram of analytic process, as shown in Figure 6:
According to TLLI and network element IP buffer memory list user conversation, use overall READY TIMER:44 second.
From 167 number bags, can find out, user completed TCP and connect to remove in the time of the 72.57th second, and at 116.57(72.57+44) second after migrate to STANDBY state.
The 168th number bag is that message is set up in up TCP connection, RACH of this data initiation, AGCH channel occupancy.
At the 168th number bag time point, open a signaling channel and take record, record field synthesizes result:
Channel holding time: i.e. the 168th number bag time.
Trigger reason: upstream message triggers.
Subscriber identity information: the user IMSI recording during session cache.
Customer position information: get the LAC/CI that the 168th number bag BSSGP layer carries.
Trigger the business information that signaling channel takies: get the 168th number bag application layer object IP, this example value is: 114.141.131.200.
In addition, poll of the present invention detects paging (PAGING) message, if paging (PAGING) response detected, can judge generation PCH, a RACH, AGCH channel occupancy.The associated same session data bag of TLLI by the P-TMSI in paging (PAGING) message with BSSGP layer in follow-up data bag, wherein the first upstream data bag is paging (PAGING) response, by first downlink data packet associated services, to learn the business IP that triggers paging.
In detection paging (PAGING) message, open a signaling channel at this time point simultaneously and take record, record field information comprises:
(1) Channel holding time: paging (PAGING) message issues the time.
(2) trigger reason: downstream message triggers.
(3) subscriber identity information: the IMSI of the BSSGP layer message extraction based on first downlink data packet after page response.
(4) customer position information: the LAC/CI extracting based on page response packet BSSGP layer.
(5) trigger the business information that signaling channel takies: based on first downlink data packet application layer object source IP after page response, extract.
The signaling channel that Fig. 7 triggers downlink business exemplified with the embodiment of the present invention takies the schematic diagram of analytic process, as shown in Figure 7:
According to the associated subsequent session message of the P-TMSI of BSSGP layer in paging (PAGING) message.
Record field synthesizes result:
Channel holding time: i.e. the 1st number bag, i.e. paging (PAGING) issues the time.
Trigger reason: downstream message triggers.
Subscriber identity information: from first downlink data packet, the 3rd number bag BSSGP layer extracts user IMSI.
Customer position information: the 2nd number bag is page response, the LAC/CI carrying from this packet BSSGP layer.
Trigger the business information that signaling channel takies: get the 3rd number bag application layer source IP, this example value is: 111.30.130.111.
By DNS signaling, domain name and the corresponding relation of applying IP can be known, by domain name, concrete application type can be known.
As shown in Figure 8, by DNS signaling, the application IP that can know domain name: long.weixin.qq.com is: 140.206.160.102,112.64.200.218,112.64.234.229 etc., and pass through domain name: long.weixin.qq.com can be judged as micro-communication service.
According to above principle, by DNS signaling, can set up application IP, domain name, the type of service mapping table of a Dynamic Maintenance, the application layer IP that the signaling channel that uplink and downlink business triggers takies in analytic process record can be associated with concrete type of service by this table, and for confirmation is which kind of business causes signaling channel to take.
By the present invention, the limitation existing for existing analytical plan, by Gb Interface chain of command signaling, in conjunction with Gb Interface user face data, takies situation and takies reason GPRS network Packet Data Channel and conduct in-depth analysis.
It is more than the detailed description that the preferred embodiments of the present invention are carried out, but those of ordinary skill in the art is to be appreciated that, within the scope of the present invention, and guided by the spirit, various improvement, interpolation and replacement are all possible, such as use can realize functional purpose of the same race algorithm, use that different programming language (as C, C++, Java etc.) is realized etc.In these protection ranges that all limit in claim of the present invention.
Claims (9)
1. based on Gb Interface signaling, realize the method that 2G wireless signaling channel occupancy is analyzed, comprise step:
User plane data transfer process in a session of Gb Interface monitoring, by MS mobility management states transition process, judgement wireless signaling channel occupancy situation;
By the application IP address of carrying in recording user face data-message, in conjunction with DNS signaling, know domain name and the corresponding relation of applying IP address, know concrete application type.
2. the method for claim 1, is characterized in that, the determination methods that data service upstream message initiation signaling channel takies comprises:
User face data in a session of Gb Interface monitoring, and record is without transfer of data duration, if in the READY TIMER period of setting without transfer of data, can be judged as travelling carriage has moved to STANDBY state, if follow-up, there is upstream data bag to send, think that travelling carriage has moved to READY state, can be identified as RACH, AGCH channel occupancy.
3. the method for claim 1, is characterized in that, the determination methods that data service downstream message initiation signaling channel takies comprises:
If monitor PAGING message at Gb Interface, travelling carriage returns to PAGING response, can be judged as travelling carriage by STANDBY state transition to READY state, will produce subsequently downlink data packet transmission, can be identified as PCH, a RACH, AGCH channel occupancy.
4. method as claimed in claim 2 or claim 3, is described as follows about REDAY TIMER value:
SGSN records the REDAY TIMER of each travelling carriage, if travelling carriage adhering to, the Routing Area Update stage initiates READY TIMER request, SGSN returns to response confirmation according to actual conditions and whether by travelling carriage requirement, sets its READY TIMER, travelling carriage is not initiated in the situation of READY TIMER request, the overall READY TIMER that uses SGSN to set.
5. method as claimed in claim 4, is characterized in that:
According to SGSN response, dynamically update a travelling carriage READY TIMER setting table, this literary name section at least comprises following field:
Mobile station identification, cellphone subscriber's IMSI, takes from and adheres to or the descending BSSGP layer of Routing Area Update process message;
The Data Update time, extract for the last time adhering to or the Routing Area Update process end time of READY TIMER value;
READY TIMER set point, in the situation that user sets voluntarily, takes from and adheres to or Routing Area Update is accepted message; User does in situation about initiatively setting, and uses unified overall READY TIMER.
6. method as claimed in claim 5, is characterized in that:
Travelling carriage READY TIMER setting table possesses information from maintenance function, can delete inactive users record according to setting the period.
7. the method for claim 1, is characterized in that:
By TLLI and network element IP, judge a session, and data cached, if the timestamp of the last item data to current time interval surpasses after default READY TIMER in session cache, judge that this user mobility controlled state has moved to STANDBY, if follow-up, there is upstream message to occur, judge at RACH of article one message time point generation, AGCH channel occupancy, at this time point, open a signaling channel simultaneously and take record, record field information comprises:
(1) Channel holding time: after STANDBY state, article one upstream message time;
(2) trigger reason: upstream message triggers;
(3) subscriber identity information: the IMSI of the BSSGP layer message extraction based on downlink data;
(4) customer position information: the LAC/CI of the BSSGP layer message extraction based on upstream data;
(5) trigger the business information that signaling channel takies: after STANDBY state, the application IP that article one upstream message is carried, follow-up will be according to this IP finishing service type identification.
8. the method for claim 1, is characterized in that:
Poll detects PAGING message, if PAGING response detected, can judge generation PCH, a RACH, AGCH channel occupancy, the associated same session data bag of TLLI by the P-TMSI in PAGING message with BSSGP layer in follow-up data bag, wherein the first upstream data bag is PAGING response, by first downlink data packet associated services, to learn the business IP that triggers paging;
In detection PAGING message, open a signaling channel at this time point simultaneously and take record, record field information comprises:
(1) Channel holding time: PAGING message issues the time;
(2) trigger reason: downstream message triggers;
(3) subscriber identity information: the IMSI of the BSSGP layer message extraction based on first downlink data packet after page response;
(4) customer position information: the LAC/CI extracting based on page response packet BSSGP layer;
(5) trigger the business information that signaling channel takies: based on first downlink data packet application layer object source IP after page response, extract.
9. the method for claim 1, is characterized in that:
By DNS signaling, set up application IP, domain name, the type of service mapping table of a Dynamic Maintenance, the application layer IP that the signaling channel that uplink and downlink business triggers takies in analytic process record can be associated with concrete type of service by this table, and for confirmation is which kind of business causes signaling channel to take.
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| US20110106275A1 (en) * | 2009-10-30 | 2011-05-05 | International Business Machines Corporation | Global mobility infrastructure for user devices |
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Application publication date: 20140226 |