CN100449977C - A method for implementing multiple ANID supported by PCF - Google Patents
A method for implementing multiple ANID supported by PCF Download PDFInfo
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- CN100449977C CN100449977C CNB031480012A CN03148001A CN100449977C CN 100449977 C CN100449977 C CN 100449977C CN B031480012 A CNB031480012 A CN B031480012A CN 03148001 A CN03148001 A CN 03148001A CN 100449977 C CN100449977 C CN 100449977C
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Abstract
The present invention discloses a method for realizing the packet control function and supporting multiple access networks. The method comprises the steps that the packet control function (PCF) is divided into more than one logical PCF; each logical PCF corresponds to a city and corresponds to a unique access network identifier (ANID). When a mobile station roams between cities corresponding to different logical PCFs, a base station controller (BSC) sends an A9 message to the affiliated PCF of the current logical PCF where the mobile station places; the PCF generates an A11 message according to the received A9 message, and sends the A11 message to a packet data service node (PDSN). The scheme of the present invention makes the PCF correspond to multiple access network identifiers, and realizes that each BTS displays a roam mark on the mobile station when the mobile station moves in different regions corresponding to all BTSs in the same BSC and PCF. Simultaneously, the method of the present invention also realizes the roam display of the mobile station when the mobile station moves in different regions corresponding to the same BTS, and saves the cost of establishing networks.
Description
Technical field
The present invention relates to code division multiple access (CDMA) technical field, relate to a kind of Packet Control Function of realizing or rather and support the method for multi-access network sign.
Background technology
3G (Third Generation) Moblie is with respect to second generation mobile communication, and the disposal ability aspect Packet data service is greatly improved.CDMA has defined its network configuration as the wireless access technology of 3G (Third Generation) Moblie in third generation partner program (3GPP) 2 standards.
The network configuration of CDMA is referring to Fig. 1.A Packet data service contact (PDSN) 101 is wherein arranged, the termination internet 102 of this PDSN, 103, one PDSN 101 of another termination Packet Control Function (PCF) can corresponding a plurality of PCF 103.Each PCF 103 connects a base station controller (BSC) 104 by the A8/A9 interface.All BSC 104 are connected with mobile switching centre (MSC) 105.A BSC 104 can meet a plurality of BTS 106.Travelling carriage (MS) 107 enters the Internet 102 by BTS106, BSC 104, PCF 103 and PDSN 101 successively.
In the cdma network structure, each PCF identifies (ANID) unique sign by an access network, and this ANID comprises system banner (SID), network identity (NID) and packet zone sign (PZID), and wherein SID and NID are disposed by BSC, and PZID is disposed by PCF.PCF of present 3GPP2 standard code can only have an ANID, and therefore pairing all BTS of PCF can only corresponding ANID.
Can be arranged on different cities When building their networks with a plurality of BTS under a BSC and the PCF, also can a BTS be set corresponding a plurality of cities, the corresponding different city, different sectors among this BTS.But because present telecommunication service requires travelling carriage when moving to the city, strange land, this travelling carriage should be able to show the roaming sign, and present CDMA guarantees that the roaming demonstration of travelling carriage between different cities is to realize by the ownership ANID of travelling carriage comparison self and the ANID that receives, specifically be the ownership SID that each travelling carriage all has himself, NID and PZID, the SID of BSC broadcasting oneself configuration, NID and PZID, travelling carriage is the ownership SID of oneself relatively, the SID of NID and PZID and BSC broadcasting, NID and PZID, if two PZID are unequal, then travelling carriage switches to target P CF from source PCF, if two SID and NID are unequal respectively, then travelling carriage can show the roaming sign, so described this networking method that a plurality of BTS under a BSC and the PCF is arranged on different cities, because that these BTS correspondences is same ANID and can't realize the roaming Presentation Function of MS between different cities, do not meet the requirement of present telecommunication service, equally, the networking method that the corresponding a plurality of cities of BTS are set also since the BTS correspondence be same ANID and can't realize the roaming Presentation Function of MS between different cities.
In the networking process of reality, can in travelling carriage, show the roaming sign for making the BTS in the different cities, need be to should a BSC and PCF being set BTS, each BSC and the different ANID of PCF configuration.Such as, referring to Fig. 2, corresponding BTS1, BSC1 and PCF1 in the city 1, corresponding BTS2, BSC2 and PCF2 in the city 2, if there is travelling carriage 1 to roam into city 2 from the city, then PCF1 is source PCF, and PCF2 is target P CF, and the access network of source PCF correspondence is designated PANID, the access network of target P CF correspondence is designated CANID, these two PCF can belong to same PDSN, also can belong to different PDSN, and two PCF in this example belong to same PDSN.Travelling carriage 1 is transferred to city 2 from the city, then this travelling carriage switches to target P CF from the source PCF of correspondence, promptly switch to PCF2 from PCF1, travelling carriage sends the information that comprises PCF1 corresponding A NID to PCF2, when carrying out this switching, need BSC2 that the ANID information unit of PANID by the A9 interface message reported target P CF, i.e. PCF2.PCF2 sends to PDSN with PANID and the CANID information of himself by the A11 interface message, the IP that PDSN uses CANID and PANID to judge and whether has this travelling carriage among the PDSN registers, if do not have, then PDSN sends agency's broadcasting that the notice travelling carriage carries out mobile IP registration to travelling carriage in the PCF2 scope, if have, then need not send.Wherein, the ANID information unit of A9 interface message is referring to Fig. 3, and this information unit comprises 7 bytes, and each byte has 8, and first byte is preserved the type identification of ANID; Second byte preserved the length information of ANID, is 0 * 05; The the 3rd to the 7th byte preserved PANID as the ANID information byte.
The networking method of prior art can satisfy the requirement of telecommunication technology and telecommunication service, but because PCF is identified uniquely by an access network sign, for making the travelling carriage between different cities can show roaming identity, the BTS in each city wants correspondence that a BSC and PCF are set, this will increase the equipment cost of networking undoubtedly, and will be especially true for the city that those users are less.Thought being set then in the networking process of reality, can't realizing for the corresponding a plurality of cities of BTS.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of PCF of realization to support the method for multi-access network sign, and a PCF can be identified by corresponding a plurality of access networks.
For reaching above purpose, technical scheme of the present invention is achieved in that a kind of method that realizes Packet Control Function support multi-access network sign, and this method comprises at least:
A. Packet Control Function PCF is divided into more than one logic PCF, the corresponding city of each logic PCF, the access network sign ANID that each logic PCF is corresponding unique;
When b. travelling carriage was roamed between Different Logic PCF is to Yingcheng City, base station controller BSC was to the current place logic PCF transmission A9 message of travelling carriage as target P CF;
C. described logic PCF generates A11 message according to the A9 message of receiving, and sends to Packet data service contact PDSN.
Among the described step a, at least one base station transceiver BTS is set in the city of each logic PCF correspondence.
Among the described step a, at least one sector of the corresponding BTS in each city.
This method may further include, by the ANID of each logic PCF correspondence among the PCF of the unified configuration of BSC BSC correspondence.
A9 interface message among the described step b comprises the ANID of target P CF at least; Among the described step c, described logic PCF comprises ANID and the CANID information of source PCF in the A11 interface message that Packet data service contact PDSN sends, and described CANID is the ANID of logic PCF correspondence.
This method can further include, and the byte of preserving CANID information is set in the A9 interface message, the value of change length byte.
This method can further include, by the ANID of each logic PCF and this PCF correspondence among the corresponding PCF of the unified configuration of BSC BSC.
Among the described step c, described logic PCF comprises ANID and the CANID information of source PCF in the A11 interface message that Packet data service contact PDSN sends, and described CANID is the ANID of PCF correspondence.
The present invention PCF is set to a plurality of logic PCF, corresponding each logic PCF is provided with an ANID, can ANID be set for each logic PCF, to send to PCF by BSC as the pairing ANID of the logic PCF of target P CF to the A9 message that PCF sends, PCF sends to PDSN with this CANID by A11 message; Also can ANID be set for each logic PCF and PCF itself, as target P CF, the ANID that PCF is corresponding with it sends to PDSN as the pairing ANID of target P CF by A11 message with PCF.
Calling and handoff procedure for roaming mobile stations, the present invention increases the byte that is used to store CANID in the ANID of A9 interface message information unit, BSC increases CANID information in the A9 interface message that sends, such being provided with can not produce any influence to existing calling, switching flow.
After by the present invention program logic PCF being set, can also be by the ANID of BSC in zones of different broadcasting Different Logic PCF correspondence, make travelling carriage by relatively the ownership ANID of self and the ANID of the BSC broadcasting that receives determine whether to show the roaming sign, and need a BSC and PCF be set corresponding each zone for the roaming Presentation Function of realizing travelling carriage, saved the cost of networking.Because after dividing a plurality of logic PCF, the different sectors of BTS can corresponding different logic PCF, therefore can also realize travelling carriage between the zones of different of the different sectors of a BTS correspondence when mobile by the present invention program, and travelling carriage can show the roaming sign.
Description of drawings
Fig. 1 is the cdma network structure of 3GPP2 standard definition;
Fig. 2 is the schematic diagram of corresponding different B SC of different cities and PCF;
Fig. 3 is the ANID information unit structure of present A9 interface message;
The ANID information unit structure of the A9 interface message that Fig. 4 further provides for the present invention program;
Fig. 5 is the present invention program's a flow chart.
Embodiment
Below in conjunction with drawings and the specific embodiments the present invention program is described in further detail.
The present invention program at first with original PCF as total PCF, it is divided into a plurality of logic PCF, makes the corresponding different logic PCF of different cities under this total PCF, and by the unified ANID that disposes each logic PCF correspondence of BSC, comprise SID, NID and PZID, make the unique corresponding ANID of each logic PCF.
Because BTS can only corresponding city, also can corresponding a plurality of cities, when city of correspondence, all sectors of sub-district under the corresponding BTS in this city, promptly the BTS cell range is corresponding with this city, when a plurality of city of correspondence, therefore when the corresponding city of BTS, there is a logic PCF at least one sector, sub-district under the corresponding BTS in each city to should BTS among total PCF, when the corresponding a plurality of city of BTS, a plurality of logic PCF are arranged among total PCF respectively to the sector in should BTS.
By such setting, under the total PCF a plurality of logic PCF are arranged, and be to use IP to communicate between BSC and the total PCF, total PCF has only an IP address, following setting, is carried out to BSC subsequent process such as communicate by letter with PCF in the only corresponding IP address of promptly all logic PCF therefore.
BSC is when sending A9 interface message as certain logic PCF of target P CF in this total PCF, need the A9 interface message can provide CANID simultaneously, the i.e. ANID of this target logic PCF, total PCF determines according to the CANID in the A9 interface message which logic PCF is this message specifically belong to again, and this PANID and CANID sent to PDSN by the A11 interface message, PDSN determines whether to have the IP registration of this travelling carriage according to this PANID and CANID, if no, then under the BSC of this CANID correspondence, send the broadcasting that the notice travelling carriage carries out mobile IP registration.It specifically is that the ANID information unit structure that will be used for carrying the A9 interface message of PANID expands to and comprises PANID and CANID that the A9 interface message provides CANID simultaneously, makes BSC when target P CF sends the A9 interface message, carries CANID in the A9 interface message.
The structure of ANID information unit is referring to Fig. 4 in the A9 interface message after the expansion, be the byte that increase is used to store CANID on the basis of structure shown in Figure 3, the byte that is increased is identical with the 3rd～7 byte among Fig. 3, simultaneously, because this information unit has increased by 5 bytes, therefore the length information that also needs second byte to preserve is set to 0 * 0A.
Can also not expand the A9 interface message, at first send PANID by an A9 interface message but BSC is set, send CANID by next A9 interface message again, target P CF obtains PANID and CANID from these two A9 interface messages.
In order to meet the flow process of prior art more, can also make BSC dispose total PCF simultaneously and reach the wherein ANID of each logic PCF correspondence.By such configuration, can not expand the A9 interface message, be still to include only PANID in the A9 interface message, this PANID is the ANID of each logic PCF, total PCF with himself ANID as CANID, PANID in itself and the A9 interface message is sent to PDSN, and PDSN sends broadcasting under total PCF.
Realize that by the present invention program travelling carriage shows the flow process of roaming sign referring to Fig. 5, corresponding following steps:
After step 502, BSC dispose the ANID of each logic PCF, broadcast different ANID information in different cities by BTS.
If only corresponding city of BTS, then BSC broadcasts the ANID in this city by this BTS in whole sub-district, if the corresponding a plurality of cities of BTS, i.e. corresponding different city, sector among the BTS, then BSC broadcasts the ANID of this sector to Yingcheng City by this BTS in each sector.
After finishing said process, if the BTS in city 1 and city 2 belongs to same BSC and PCF, logic PCF1 among the 1 corresponding PCF of city, logic PCF2 among the 2 corresponding PCF of city, then travelling carriage is from the city 1 when moving to city 2, because the SID of the BSC in two cities broadcasting is different with NID, so travelling carriage can demonstrate the roaming sign.
Setting by the present invention program, when the zones of different of each the BTS correspondence of travelling carriage under same BSC and PCF is moved, each BTS can show the roaming sign on this travelling carriage, equally, when travelling carriage moves in the zones of different of a BTS correspondence, BTS can show the roaming sign on this travelling carriage, and being provided with of the present invention program can not produce any influence to existing calling, switching flow.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1, a kind of Packet Control Function of realizing is supported the method for multi-access network sign, it is characterized in that this method comprises at least:
A. Packet Control Function PCF is divided into more than one logic PCF, the corresponding city of each logic PCF, the access network sign ANID that each logic PCF is corresponding unique;
When b. travelling carriage was roamed between Different Logic PCF is to Yingcheng City, base station controller BSC was to the current place logic PCF transmission A9 message of travelling carriage as target P CF;
C. described logic PCF generates A11 message according to the A9 message of receiving, and sends to Packet data service contact PDSN.
2, method according to claim 1 is characterized in that among the described step a, and at least one base station transceiver BTS is set in the city of each logic PCF correspondence.
3, method according to claim 1 is characterized in that among the described step a, at least one sector of the corresponding BTS in each city.
4, method according to claim 1 is characterized in that this method further comprises, by the ANID of each logic PCF correspondence among the PCF of the unified configuration of BSC BSC correspondence.
5, method according to claim 4 is characterized in that the A9 interface message among the described step b comprises the ANID of target P CF at least; Among the described step c, described logic PCF comprises ANID and the CANID information of source PCF in the A11 interface message that Packet data service contact PDSN sends, and described CANID is the ANID of logic PCF correspondence.
6, method according to claim 5 is characterized in that this method further comprises, the byte of preserving CANID information is set in the A9 interface message, the value of change length byte.
7, method according to claim 1 is characterized in that this method further comprises, by the ANID of each logic PCF and this PCF correspondence among the corresponding PCF of the unified configuration of BSC BSC.
8, method according to claim 7 is characterized in that among the described step c, and described logic PCF comprises ANID and the CANID information of source PCF in the A11 interface message that Packet data service contact PDSN sends, and described CANID is the ANID of PCF correspondence.
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| CNB031480012A CN100449977C (en) | 2003-06-26 | 2003-06-26 | A method for implementing multiple ANID supported by PCF |
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Citations (2)
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| WO2001078322A2 (en) * | 2000-04-11 | 2001-10-18 | Telefonaktiebolaget L M Ericsson (Publ) | System and method for packet data servicing node (pdsn) initial assignment and reselection |
| CN1416655A (en) * | 2000-03-10 | 2003-05-07 | 艾利森电话股份有限公司 | Packet core function and method of selecting packet data service node/foreign agent in packet data network |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1416655A (en) * | 2000-03-10 | 2003-05-07 | 艾利森电话股份有限公司 | Packet core function and method of selecting packet data service node/foreign agent in packet data network |
| WO2001078322A2 (en) * | 2000-04-11 | 2001-10-18 | Telefonaktiebolaget L M Ericsson (Publ) | System and method for packet data servicing node (pdsn) initial assignment and reselection |
Non-Patent Citations (4)
| Title |
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| 3GPP2 Access Network Interfacers Interoperability Specification Release A. 第111-183页. 2000 |
| 3GPP2 Access Network Interfacers Interoperability Specification Release A. 第111-183页. 2000 * |
| CDMA2000中分组数据控制功能的实现. 匡素文.浙江大学硕士学位论文. 2002 |
| CDMA2000中分组数据控制功能的实现. 匡素文. 浙江大学硕士学位论文. 2002 * |
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