CN100440873C - Selection method of gateway sapporting node in universal pocket wireless business - Google Patents
Selection method of gateway sapporting node in universal pocket wireless business Download PDFInfo
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Abstract
The present invention relates to the General Packet Radio Service (GPRS), particularly to a method for selecting a Gateway GPRS Support Node (GGSN), and the service can be allocated by selecting the GGSN according to an MSISDN segment, an IMSI segment, the charging attribute of a subscriber, the maximum bandwidth of the GGSN, the use condition of the maximum bandwidth under the precondition that no new network node is added. The method for selecting a Gateway GPRS Support Node (GGSN) comprises the following steps: step A, at least one attribute of at least one GGSN is configured on an SGSN, and priority is set for each attribute; step B, the SGSN obtains a GGSN to be selected according to the resolution of an access point name of the subscriber, and pays attention to the attribute of the top priority; step C, as for each GGSN to be selected, the relative load of the attention attribute is calculated, or the attribute is matched; step D, the GGSN which has the minimum relative load or is matched is selected.
Description
Technical field
The present invention relates to GPRS, particularly configurable gateway GPRS supporting node (GGSN) system of selection on the GPRS serving GPRS support node.
Background technology
Along with rapid development of network technique, Internet protocol (Internet Protocol, abbreviation " IP ") technology has been tending towards ripe, Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multi-Access, be called for short " WCDMA ") as one of main standard of 3-G (Generation Three mobile communication system), also in its packet data package retransmission technique, quoted the prior art of IP network in a large number.Popularizing and developing of IP network haves laid a good foundation for the development and the planning of WCDMA packet domain core network." but both advantageous and disadvantageous ", the WCDMA network has also been introduced some present intrinsic drawbacks in the IP network when introducing the IP network technology, wherein the most important is exactly that IP network lacks network resource management, specifically, when the WCDMA packet domain core network in the problem that when IP network is close, will inevitably bring aspects such as internet security, Internet resources service efficiency, network traffics balance, and may lose the advantage of the manageability aspect of conventional telecommunication network.How going after profits and advoiding disadvantages, make full use of the advantage of IP technology and eliminate its drawback, is the problem that the WCDMA development must be considered.
The WCDMA communication system is by subscriber equipment (User Equipment, be called for short " UE "), land radio access web (UMTS Terrestrial Radio Access Network, be called for short " UTRAN ") and core network (Core Network, be called for short " CN ") three parts composition, wherein CN is from being divided into circuit commutative field (Circuit Switched Domain in logic again, CS) and packet-switched domain (PacketSwitched Domain, PS), in PS, include two kinds of important entities: GPRS serving GPRS support node (Serving GPRS Support Node, be called for short " SGSN ") and gateway GPRS supporting node (GGSN) (Gateway GPRS Support Node is called for short " GGSN ").Wherein the major function of SGSN provides the functions such as routing forwarding, mobile management, session management, authentication and encryption in PS territory.GGSN provides route and the encapsulation of packet between WCDMA mobile network and external data network.
There are two kinds of resource distribution systems of selection at present by SGSN management GGSN:
First method is at packet data protocol (Packet Data Protocol, abbreviation " PDP ") in the conversation establishing flow process, SGSN is by carrying out the IP address list that domain name mapping obtains GGSN to accessing points title (Access Point Name is called for short " APN ").The method of domain name mapping adopts traditional DNS (DOMAIN NAME SYSTEM is called for short " DNS ") agreement, and the APN form adopts the naming method (such as " company.com " or " service.company.com ") of DNS system.The IP address corresponding relation of APN and GGSN disposes in dns server in advance.This method is a kind of typical IP network technology, and it can make SGSN obtain the GGSN IP address list of any pre-configured APN.
Second method is to have added a new equipment in the GGSN front--servo load balance device (Server Load Balancer, be called for short " SLB "), dns server returned the IP address of SLB when APN resolved, all PDP requests send among the SLB, SLB can monitor in real time to the operation conditions of a plurality of GGSN, unified management realizes the load sharing of a plurality of GGSN.
In actual applications, there is following problem in such scheme: first kind of GGSN system of selection is fully based on the DNS technology of traditional IP, if but GGSN capacity and specification are inequality, and operator wishes for an APN, different international mobile station identity numbers (International MobileStation Identify, be called for short " IMSI ") in the time of can being linked into different GGSN, existing dns resolution scheme can't be supported this function.Because for dns resolution, the status, IP address that same APN parses is identical, does not wherein have more information, to such an extent as to can't distinguish different GGSN.
The defective of second kind of GGSN system of selection is to increase an equipment---SLB and cause that cost increases, network reliability reduces, upgrading difficulty, the problem such as network delay that increased, and present SLB does not also support by selection functions such as international comprehensive service digital net number of IMSI/ travelling carriage (Mobile StationInternational Integrated Services Digital Network Number is called for short " MSISDN ") and charging property.
Summary of the invention
The technical problem to be solved in the present invention provides the system of selection of gateway support node in a kind of GPRS, make under the prerequisite that does not increase new network node, can come distribution service according to selection GGSN such as the maximum bandwidth of MSISDN segmentation, IMSI segmentation, user's charging property and GGSN and operating positions thereof.
In order to solve the problems of the technologies described above, the invention provides the system of selection of gateway support node in a kind of GPRS, comprise following steps:
A disposes at least a attribute of at least one gateway GPRS supporting node (GGSN) on the GPRS serving GPRS support node, and for described attribute priority is set;
The described GPRS serving GPRS support node of B is resolved according to user's APN and is obtained gateway GPRS supporting node (GGSN) to be selected;
C is to each described gateway GPRS supporting node (GGSN) to be selected, the relative load of the attribute that calculating priority level the is the highest or the highest attribute of described priority mated;
D selects the relative load of the highest attribute of described priority minimum, or the highest attribute of the described priority described gateway GPRS supporting node (GGSN) that the match is successful.
Wherein, described step C can for: to each described gateway GPRS supporting node (GGSN) to be selected,
If the attribute that the described priority of C2 is the highest is the weights attribute, then calculate the relative load of the highest attribute of described priority at each described gateway GPRS supporting node (GGSN); Otherwise enter step C3;
C3 mates the highest attribute of described priority of attribute of user and described gateway GPRS supporting node (GGSN).
Described weights attribute can for: but the maximum accessing group data agreement number or the maximum bandwidth of described gateway GPRS supporting node (GGSN).
The described attribute that does not belong to described weights attribute can be charging property, or international mobile station identity number section, or the international comprehensive service digital net number section of travelling carriage.
Described step C2 can also further comprise following substep:
C21 obtains the weights of each described gateway GPRS supporting node (GGSN) with the Configuration Values of the weights attribute of each described gateway GPRS supporting node (GGSN) to be selected Configuration Values sum divided by the described weights attribute of all described gateway GPRS supporting node (GGSN)s to be selected;
C22 obtains the ratio of each described gateway GPRS supporting node (GGSN) with the currency of the weights attribute of each described gateway GPRS supporting node (GGSN) to be selected currency sum divided by the described weights attribute of all described gateway GPRS supporting node (GGSN)s to be selected;
C23 is with the described ratio of each described gateway GPRS supporting node (GGSN) to be selected described weights divided by this gateway GPRS supporting node (GGSN), obtains the relative load of the highest attribute of the described priority of each described gateway GPRS supporting node (GGSN).
Described step C21 can also further comprise following substep:
If the attribute that the described priority of a described gateway GPRS supporting node (GGSN) to be selected is the highest disposes, think that then the weights of this gateway GPRS supporting node (GGSN) equate with the maximum of the weights of all the other described gateway GPRS supporting node (GGSN)s to be selected in this GPRS serving GPRS support node.
Described step C3 can also further comprise following substep:
If the attribute that the described priority of described gateway GPRS supporting node (GGSN) is the highest does not dispose, think that then this gateway GPRS supporting node (GGSN) is that the match is successful in described GPRS serving GPRS support node.
Described step D can also further comprise following substep:
D1 judges whether a plurality of described gateway GPRS supporting node (GGSN)s, and the match is successful or the relative load of a plurality of described gateway GPRS supporting node (GGSN)s is minimum, if then enter step D2, otherwise enters step D3;
D2 selects one from described a plurality of gateway GPRS supporting node (GGSN)s that the match is successful or relative load is minimum;
D3 selects unique gateway GPRS supporting node (GGSN) that the match is successful or relative load is minimum.
Described step D2 can also further comprise following steps:
Judge whether the attribute of the described gateway GPRS supporting node (GGSN) that the priority of higher than described priority in addition attribute is lower;
If then to each described gateway GPRS supporting node (GGSN) to be selected, calculate the relative load than low-level properties of the low one-level of priority of the attribute higher, or mate than low-level properties to described than described priority; Select described relative load minimum than low-level properties, or described than the low-level properties described gateway GPRS supporting node (GGSN) that the match is successful;
Otherwise, from described a plurality of gateway GPRS supporting node (GGSN)s that the match is successful or relative load is minimum, select one arbitrarily.
Described step D can also further comprise following substep:
If the described gateway GPRS supporting node (GGSN) that the match is successful or relative load is minimum all lost efficacy, then select not match or relative load time low described gateway GPRS supporting node (GGSN).
By relatively finding, technical scheme difference with the prior art of the present invention is, the attribute of each GGSN of configuration on SGSN, for each GGSN attribute is provided with priority, to the relative load of mating or calculate each GGSN of the highest attribute of priority, select the GGSN of coupling or relative load minimum.
Difference on this technical scheme, brought comparatively significantly beneficial effect, promptly can realize the flexible networking demand of operator, can select GGSN according to different requirements, all selection algorithms are realized on SGSN, do not increase new network node, do not change the existing network framework, can realize the smooth upgrade of legacy network.Than the method that increases SLB equipment more more economical effectively, also solved SLB equipment and can not support problem by functions such as IMSI/MSISDN and charging property.
Description of drawings
Fig. 1 is the system of selection flow chart that SGSN according to an embodiment of the invention goes up configuration GGSN.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
As mentioned above, Fig. 1 shows the system of selection flow chart that SGSN according to an embodiment of the invention goes up configuration GGSN, as shown in Figure 1:
At first, determine collocation method and the configuration attribute of GGSN on SGSN, and dispose the priority between each attribute in step 100.Specifically, the GGSN attribute comprises: the IP address of GGSN, the maximum of GGSN can insert the IMSI section/MSISDN section of maximum bandwidth, certain the GGSN correspondence of PDP number, GGSN, the charging property of certain GGSN correspondence (for example, common, pre-payment, flat rate, real time billing etc.).Can dispose GGSN according to these attributes, according to the present invention, two kinds of allocation plans be arranged, a kind of is the single attribute allocation plan, if such as disposed charging property, just can not dispose IMSI/MSISDN again; Another kind is multiple attribute configuration scheme, such as pressing earlier charging property, secondly selects according to IMSI/MSISDN etc.
The preferred value that disposes between each attribute is exactly that each attribute of GGSN is according to priority arranged from high to low, each attribute with limit priority that takes out.
Then enter step 110, SGSN resolves by DNS according to user's APN.The result who resolves is the tabulation of a GGSN, and the GGSN in this tabulation is GGSN to be selected.The GGSN that mentions in the step is meant GGSN to be selected later on.Pay close attention to the highest attribute of priority then, handle.
After this enter step 120, judge whether the attribute of paying close attention to is the weights attribute, if then enter step 130, otherwise enters step 150.
Need to prove that the maximum that above-mentioned weights attribute refers to GGSN can insert maximum bandwidth of PDP number or GGSN etc., need calculate their weights to these attributes.Non-weights attribute comprises IMSI/MSISDN section, charging property etc., and these attributes are only needed simply to judge that active user's the association attributes and the matching relationship of these non-weights attributes get final product.Which number section IMSI/MSISDN number of user of for example judging current access is in.
In step 130, be that each GGSN calculates weights, weights are by the value of the single GGSN value divided by total GGSN.After this enter step 140.Can insert the PDP number if the user has disposed the maximum of GGSN, wish that then weights are calculated divided by total GGSN capacity with the capacity of single GGSN according to the load of the capacity equilibrium GGSN of GGSN; If the user has disposed the maximum bandwidth of GGSN, wish that then weights are calculated divided by total GGSN bandwidth with the bandwidth of single GGSN according to the load of the balanced bandwidth GGSN of GGSN.The GGSN here is same APN's.Such as GGSN A capacity is 30000, and GGSN B capacity is 10000, and GGSN C capacity is 20000.The weights of GGSN A are 3/6 like this, and the weights of GGSN B are 1/6, and the weights of GGSN C are 2/6.
In step 140, SSGN preserves currency, be current PDP number or current bandwidth use amount, and calculate a ratio according to this value, this ratio is the ratio of the currency summation of each GGSN currency and all GGSN, when selecting GGSN, this ratio is compared with the weights described in the step 130, select that minimum GGSN of relative load, after this enter step 160.For example, GGSN A bandwidth is 300Mbps, and GGSN B bandwidth is 100Mbps, and GGSN C bandwidth is 200Mbps.The weights of GGSN A are 3/6 like this, and the weights of GGSN B are 1/6, and the weights of GGSN C are 2/6.In addition, current GGSN A has used 20Mbps, and GGSN B has used 10Mbps, and GGSN C has used 30Mbps.Calculate the ratio of the currency summation of each GGSN currency and all GGSN, the ratio that obtains GGSN A is 2/6, and the ratio of GGSN B is 1/6, and the ratio of GGSN C is 3/6.The ratio of each GGSN is with after weights are compared, and the relative load that obtains GGSN A is 2/3, and the relative load of GGSN B is 1, and the relative load of GGSN C is 3/2.Obviously, should choose the GGSN A of relative load minimum.
In step 150, for non-weights attribute, the attribute of user property and GGSN is mated, only in the GGSN that the match is successful, further select.After this enter step 160.For example user's charging property is real time billing, then only further selects in attribute is the GGSN of real time billing.
In step 160, judged whether a plurality of GGSN couplings, if then enter step 170, otherwise enter step 190.
In step 170, judge whether to also have the more attribute of low priority, promptly judge whether than the lower attribute of being paid close attention in the step 120 of attribute priority, if have then enter step 120, getting priority time high attribute selects as foundation, so circulation is not up to there being the more attribute of low priority, otherwise enters step 180.
In step 180, from a plurality of GGSN of coupling, select one at random.Because it is a plurality of that the GGSN of coupling has, and do not have other selection foundation, therefore adopt random algorithm from a plurality of GGSN of coupling with selecting one, flow process finishes.
In step 190, select the GGSN of unique coupling, flow process finishes.
It is pointed out that if mate or GGSN that relative load is minimum all lost efficacy (show as and return failed message), then will in the GGSN that other do not match or relative load is time low, select one again.
Need to prove that certain GGSN that parses for APN does not dispose the situation of association attributes, if this attribute is the weights attributes, then the weights of this GGSN equate with the GGSN of current maximum, because the GGSN that this acquiescence is the network capacity extension to be increased newly, Capacity Ratio is bigger; Or this attribute is not the weights attribute, then thinks wildcard, is exactly that all attributes can both match this GGSN, because the GGSN that this acquiescence is the network capacity extension to be increased newly.
Though by reference some preferred embodiment of the present invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that, can do various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.
Claims (10)
1. the system of selection of gateway support node in the GPRS is characterized in that, comprises following steps:
A disposes at least a attribute of at least one gateway GPRS supporting node (GGSN) on the GPRS serving GPRS support node, and for described attribute priority is set;
The described GPRS serving GPRS support node of B is resolved according to user's APN and is obtained gateway GPRS supporting node (GGSN) to be selected;
C is to each described gateway GPRS supporting node (GGSN) to be selected, the relative load of the attribute that calculating priority level the is the highest or the highest attribute of described priority mated;
D selects the relative load of the highest attribute of described priority minimum, or the described gateway GPRS supporting node (GGSN) of the highest attributes match success of described priority.
2. the system of selection of gateway support node is characterized in that in the GPRS according to claim 1, and described step C is:
To each described gateway GPRS supporting node (GGSN) to be selected,
If the attribute that the described priority of C2 is the highest is the weights attribute, then calculate the relative load of the highest attribute of described priority at each described gateway GPRS supporting node (GGSN); Otherwise enter step C3;
C3 mates the highest attribute of described priority of attribute of user and described gateway GPRS supporting node (GGSN).
3. the system of selection of gateway support node is characterized in that in the GPRS according to claim 2, and described weights attribute is: but the maximum accessing group data agreement number or the maximum bandwidth of described gateway GPRS supporting node (GGSN).
4. the system of selection of gateway support node in the GPRS according to claim 2, it is characterized in that, the described attribute that does not belong to described weights attribute is: charging property, or international mobile station identity number section, or the international comprehensive service digital net number section of travelling carriage.
5. the system of selection of gateway support node is characterized in that in the GPRS according to claim 2, and described step C2 also further comprises following substep:
C21 obtains the weights of each described gateway GPRS supporting node (GGSN) with the Configuration Values of the weights attribute of each described gateway GPRS supporting node (GGSN) to be selected Configuration Values sum divided by the described weights attribute of all described gateway GPRS supporting node (GGSN)s to be selected;
C22 obtains the ratio of each described gateway GPRS supporting node (GGSN) with the currency of the weights attribute of each described gateway GPRS supporting node (GGSN) to be selected currency sum divided by the described weights attribute of all described gateway GPRS supporting node (GGSN)s to be selected;
C23 is with the described ratio of each described gateway GPRS supporting node (GGSN) to be selected described weights divided by this gateway GPRS supporting node (GGSN), obtains the relative load of the highest attribute of the described priority of each described gateway GPRS supporting node (GGSN).
6. the system of selection of gateway support node is characterized in that in the GPRS according to claim 5, and described step C21 also further comprises following substep:
If the attribute that the described priority of a described gateway GPRS supporting node (GGSN) to be selected is the highest disposes, think that then the weights of this gateway GPRS supporting node (GGSN) equate with the maximum of the weights of all the other described gateway GPRS supporting node (GGSN)s to be selected in this GPRS serving GPRS support node.
7. the system of selection of gateway support node is characterized in that in the GPRS according to claim 2, and described step C3 also further comprises following substep:
If the attribute that the described priority of described gateway GPRS supporting node (GGSN) is the highest does not dispose, think that then this gateway GPRS supporting node (GGSN) is that the match is successful in described GPRS serving GPRS support node.
8. the system of selection of gateway support node is characterized in that in the GPRS according to claim 1, and described step D also further comprises following substep:
D1 judges whether a plurality of described gateway GPRS supporting node (GGSN)s, and the match is successful or the relative load of a plurality of described gateway GPRS supporting node (GGSN)s is minimum, if then enter step D2, otherwise enters step D3;
D2 selects one from described a plurality of gateway GPRS supporting node (GGSN)s that the match is successful or relative load is minimum;
D3 selects unique gateway GPRS supporting node (GGSN) that the match is successful or relative load is minimum.
9. the system of selection of gateway support node is characterized in that in the GPRS according to claim 8, and described step D2 also further comprises following steps:
Judge whether the attribute of the described gateway GPRS supporting node (GGSN) that the priority of higher than described priority in addition attribute is lower;
If then to each described gateway GPRS supporting node (GGSN) to be selected, calculate the relative load than low-level properties of the low one-level of priority of the attribute higher, or mate than low-level properties to described than described priority; Select described relative load minimum than low-level properties, or described than the low-level properties described gateway GPRS supporting node (GGSN) that the match is successful;
Otherwise, from described a plurality of gateway GPRS supporting node (GGSN)s that the match is successful or relative load is minimum, select one arbitrarily.
10. the system of selection of gateway support node is characterized in that in the GPRS according to claim 1, and described step D also further comprises following substep:
If the described gateway GPRS supporting node (GGSN) that the match is successful or relative load is minimum all lost efficacy, then select not match or relative load time low described gateway GPRS supporting node (GGSN).
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| CN101009572B (en) * | 2006-01-24 | 2012-07-04 | 朗迅科技公司 | IMS budget control for media change in the IMS session period |
| CN101098510B (en) * | 2007-03-07 | 2011-08-10 | 中兴通讯股份有限公司 | Method for implementing packet domain end-to-end service |
| CN101325799B (en) * | 2007-06-15 | 2012-07-04 | 华为技术有限公司 | Method for selecting server and equipment for supporting grouping exchange |
| CN101227748B (en) * | 2008-01-23 | 2012-05-23 | 中兴通讯股份有限公司 | Method for selecting access network gateway in microwave access global intercommunication wireless communication system |
| CN101500243B (en) * | 2008-02-03 | 2010-12-08 | 普天信息技术研究院有限公司 | A method for selecting a bearer mode of a packet data service |
| CN102726078B (en) * | 2011-11-09 | 2014-07-09 | 华为技术有限公司 | Method for mobile terminal registration in Pool area and access network entity |
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| CN1434612A (en) * | 2002-01-23 | 2003-08-06 | 华为技术有限公司 | Method for realizing grouping business from single information source to multiple receive point |
| US20030169712A1 (en) * | 2002-03-05 | 2003-09-11 | Shiao-Li Tsao | Re-allocation method for a distributed GGSN system |
| US20030169771A1 (en) * | 2002-01-24 | 2003-09-11 | Hong-Jin Ahn | Apparatus and method for reordering traffic flow templates in a mobile communication system |
| CN1446011A (en) * | 2002-03-15 | 2003-10-01 | 华为技术有限公司 | Self-adapting flow control method for interfaces between operation support nodes and controllers of base stations |
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| CN1434612A (en) * | 2002-01-23 | 2003-08-06 | 华为技术有限公司 | Method for realizing grouping business from single information source to multiple receive point |
| US20030169771A1 (en) * | 2002-01-24 | 2003-09-11 | Hong-Jin Ahn | Apparatus and method for reordering traffic flow templates in a mobile communication system |
| US20030169712A1 (en) * | 2002-03-05 | 2003-09-11 | Shiao-Li Tsao | Re-allocation method for a distributed GGSN system |
| CN1446011A (en) * | 2002-03-15 | 2003-10-01 | 华为技术有限公司 | Self-adapting flow control method for interfaces between operation support nodes and controllers of base stations |
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