CN104735646A - Differentiated service method and system under POOL networking environment - Google Patents
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Abstract
The invention discloses a differentiated service method and system under a POOL networking environment. The method includes the steps that a SGSN receives a service request initiated by a user, after it is determined that the service request does not contain the NRI of the SGSN, the APN information of the user is obtained from a HLR, and whether the user belongs to the SGSN or not is judged; if yes, first PTMSI containing the NRI of the SGSN is configured for the user, and the user is indicated to use related services by the adoption of the first PTMSI; if not, corresponding second PTMSI is configured for the user based on the APN information according to the predefined corresponding relation between the APN information and the PTMSI segment, the second PTMSI contains NRI of another SGSN, and the user is indicated to send a service request to the other SGSN again by the adoption of the second PTMSI. The differentiated service in the SGSN POOL is achieved, and the complexity of the operation and maintenance means and the operation and maintenance cost are lowered.
Description
Technical field
The present invention relates to moving communicating field, particularly relate to the method and system of differentiated service under group (POOL) network environment of a kind of pond.
Background technology
Consult shown in Fig. 1, current group exchanges (Packet Switched, PS) core net is by service universal grouping wireless business supporting node (Serving GPRS Support Node, SGSN), name server (Domain Name System, DNS), interconnection agreement (Internet Protocol between network, IP) routing device, Gateway GPRS Support Node (Gateway GPRS Support Node, GGSN) and fire compartment wall composition.The operational system of current PS core network element, based on the way to manage of legacy network devices, adopts the flow process of user terminal → SGSN → Access Point Name (Access Point Name, APN) → DNS → GGSN, realizes customer service.
For improving redundancy ability, current SGSN networking adopts the mode of SGSN Pool.Consult shown in Fig. 2, the appearance of SGSN Pool, with the mechanism of pond prescription formula work, has broken base station controller (Base StationController, BSC) man-to-man control planning between/radio network controller (Radio Network Controller, RNC) and SGSN.All routes (RA) region of the BSC/RNC that one group of SGSN node is served is included in SGSN Pool region.In SGSN Pool region, have multiple SGSN to run concurrently, they share the business in SGSN Pool region jointly.When under the Radio Resource that travelling carriage (Mobile Station, MS) is in SGSN Pool covers, it only serve by the SGSN node in this SGSN Pool region.When MS roams in SGSN Pool region, without the need to changing its service SGSN node, thus decreasing the internodal renewal of SGSN, switching and migration, therefore, SGSN Pool can be regarded as an open-ended large size SGSN.
A SGSN Pool region provides service jointly by one or more SGSN node.The complete service region of a BSC/PCU node belongs to one or more SGSN Pool region.Should have and can reach route between BSC/RNC node to multiple SGSN node, simultaneously BSC/RNC should possess node selection function, and suitable SGSN can be selected to provide service for MS.
After user enters SGSN POOL region, user to be assigned to the SGSN in SGSN POOL region by BSC/RNC in the mode of poll, this SGSN distributes a network resource identifier (Network Resource Identity containing this SGSN identifying information to user immediately, NRI) grouping temporarily moved subscriber identification (Packet Temporary Mobile Subscriber Identities, PTMSI) encode, as shown in Figure 3, this information is the 14-23 position of PTMSI coding.User is follow-up when moving in SGSN POOL region and use business, and BSC/RNC can identify the SGSN of the former registration of user according to the NRI field of this user, directly the association requests of this user is sent to corresponding SGSN.After SGSN receives request, the APN information of this user is sent to DNS, the parsing of APN information is realized by DNS, adopt the GGSN address at the mode designated user business place of poll, be associated with GGSN by various IP interconnect equipment, finally realized the APN business of user by GGSN.
But, traditional PS core net is by the restriction of network physical topology, district management can only be adopted, and traditional operational system also cannot carry out service class identification according to operation analysis system to the statistical value of the contribution rate of user, high-value user, domestic consumer and low value user cannot be differentiated, can only indifference management be carried out to all users in region, therefore pointedly for high-value user provides service guarantee, cannot can only carry out the high standard O&M of the whole network unit.Along with being doubled and redoubled of user service data, the scale of core net and the scale of operational system are also increasingly huge, and the cost control that high O&M cost, the Service assurance of high-value user and day by day fierce market competition are brought is by conflicting.
Along with the construction of SGSN Pool is complete, although the physical topology between SGSN Pool and wireless net member limits bottleneck to break through, but current SGSN Pool still district management mode traditionally manages, and excessive SGSN Pool bring more complexity also can to later stage O&M.
Summary of the invention
The embodiment of the present invention provides the method and system of differentiated service under a kind of POOL network environment, in order to carry out service class identification to user, difference management is carried out to the user in region, for high-value user provides emphasis service, for domestic consumer provides standards service, for low value user provides low cost service, reduce the cost of O&M and the complexity of later stage O&M.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
First aspect, the method for differentiated service under a kind of POOL network environment, comprising:
SGSN receives Client-initiated service request;
Described SGSN, when determining the NRI not comprising described SGSN in described service request, obtains the APN information of described user from HLR, and judges whether described user belongs to described SGSN based on described APN information;
If so, then described SGSN is that described user distributes the PTMSI comprising the NRI of described SGSN, and indicating user adopts a described PTMSI to use related service;
Otherwise, described SGSN is based on described APN information, according to the corresponding relation of predefined APN information and PTMSI section, for described user distributes corresponding 2nd PTMSI, include the NRI of another SGSN in described 2nd PTMSI, indicate described user to adopt described 2nd PTMSI to resend service request to another SGSN described.
By this implementation, carry out differential management to the user in SGSN POOL, the user be worth for difference provides different service quality targetedly, thus reduces the holistic cost of later stage O&M.
In conjunction with first aspect, in the implementation that the first is possible, comprise further:
At initial configuration phase, in advance for each user arranges corresponding priority, and the priority of each user corresponding arranges corresponding APN information respectively, and will arrange result preservation in hlr.
By this implementation, pre-set the priority of each user, and corresponding different priority arranges different APN information, SGSN user being assigned to respective service rank based on APN information for the later stage prepares.
In conjunction with first aspect, in the implementation that the second is possible, when described user does not belong to described SGSN, described SGSN is based on described APN information, according to the corresponding relation of predefined APN information and PTMSI section, for described user distributes corresponding 2nd PTMSI, comprising:
Described SGSN judges in described APN information, whether comprise special APN character string;
When determining to comprise special APN character string in described APN information, described SGSN judges whether the priority of the user that described special APN character string characterizes is high further, if, the 2nd PTMSI is distributed for described user in the PTMSI section then reserved the user for high priority, otherwise, in the PTMSI section that the user for low priority reserves, distribute the 2nd PTMSI for described user;
When determining not comprise special APN character string in described APN information, in the residue PTMSI section of described SGSN outside the PTMSI section of distributing for the user of high priority and the user of low priority, distribute the 2nd PTMSI for described user.
By this implementation, when this user does not belong to this SGSN, according to the APN information of user, user is reoriented to corresponding SGSN.
In conjunction with the implementation that the second of first aspect is possible, in the implementation that the third is possible, the PTMSI section that the described user for high priority reserves is the 0-13 position of PTMSI coding, the PTMSI section that the described user for low priority reserves is the 24-29 position of PTMSI coding, and the residue PTMSI section outside the PTMSI section that the user of the described user for high priority and low priority distributes is the 14-23 position of PTMSI coding.
In this way, SGSN to encode with PTMSI according to special APN character string and mates in advance.
In conjunction with any one possible implementation above-mentioned of first aspect, in the 4th kind of possible implementation, comprise further:
Described SGSN is when determining the NRI comprising described SGSN in described service request, and for described user redistributes the 3rd PTMSI comprising described NRI, indicating user adopts described 3rd PTMSI to use related service.
By this implementation, SGSN is that the user belonging to this SGSN distributes PTMSI, as the mark of this user in this user SGSN.
Second aspect, the system of differentiated service under a kind of POOL network environment, comprising:
Communication unit, for receiving Client-initiated service request;
Confirmation unit, for when determining the NRI not comprising SGSN in described service request, obtains the APN information of described user from HLR, and judges whether described user belongs to described SGSN based on described APN information;
First allocation units, for when determining described user attaching in described SGSN, for described user distributes the PTMSI comprising the NRI of described SGSN, indicating user adopts a described PTMSI to use related service;
Second allocation units, for when determining that described user does not belong to described SGSN, based on described APN information, according to the corresponding relation of predefined APN information and PTMSI section, for described user distributes corresponding 2nd PTMSI, include the NRI of another SGSN in described 2nd PTMSI, indicate described user to adopt described 2nd PTMSI to resend service request to another SGSN described.
Like this, by the mutual cooperation of above-mentioned unit, carry out differential management to the user in SGSN POOL, the user be worth for difference provides different service quality targetedly, thus reduces the holistic cost of later stage O&M.
In conjunction with second aspect, in the implementation that the first is possible, comprise further:
Initial configuration unit, at initial configuration phase, in advance for each user arranges corresponding priority, and the priority of each user corresponding arranges corresponding APN information respectively, and will arrange result preservation in hlr.
Like this, initial configuration unit pre-sets the priority of each user, and corresponding different priority arranges different APN information, and SGSN user being assigned to respective service rank based on APN information for the later stage prepares.
In conjunction with second aspect, in the implementation that the second is possible, described second allocation units specifically for:
Judge in described APN information, whether comprise special APN character string;
When determining to comprise special APN character string in described APN information, described second allocation units judge whether the priority of the user that described special APN character string characterizes is high further, if, the 2nd PTMSI is distributed for described user in the PTMSI section then reserved the user for high priority, otherwise, in the PTMSI section that the user for low priority reserves, distribute the 2nd PTMSI for described user;
When determining not comprise special APN character string in described APN information, in the residue PTMSI section of described second allocation units outside the PTMSI section of distributing for the user of high priority and the user of low priority, distribute the 2nd PTMSI for described user.
Like this, when the second allocation units confirm that this user does not belong to this SGSN, according to the APN information of user, user is reoriented to corresponding SGSN.
In conjunction with the implementation that the second of second aspect is possible, in the implementation that the third is possible, described second allocation units specifically for:
User for high priority reserves the PTMSI section of 0-13 position as the user of described high priority of PTMSI coding, user for low priority reserves the 24-29 position of PTMSI coding as the PTMSI section of the user of described low priority, for reserving 14-23 position that remaining PTMSI the encodes PTMSI section as the user with open air of the described user except high priority and low priority except the user of high priority and low priority with outdoor user.
Like this, the second allocation units to be encoded with PTMSI according to special APN character string and are mated in advance.
In conjunction with any one possible implementation above-mentioned of second aspect, in the 4th kind of possible implementation, comprise further:
3rd allocation units, for when determining the NRI comprising SGSN in described service request, for described user redistributes the 3rd PTMSI comprising described NRI, indicating user adopts described 3rd PTMSI to use related service.
Like this, the 3rd allocation units are that the user belonging to this SGSN distributes PTMSI, as the mark of this user in this user SGSN.
Accompanying drawing explanation
Fig. 1 is PS core net operational system structural representation under prior art;
Fig. 2 is SGSN networking structure schematic diagram under prior art;
Fig. 3 is PTMSI coding structure figure under prior art;
Fig. 4 is the flow chart realizing differentiated service in the embodiment of the present invention under POOL network environment;
Fig. 5 is the system schematic realizing differentiated service in the embodiment of the present invention under POOL network environment.
Embodiment
In SGSN POOL region, in order to realize serving targetedly to user, such as, for high-value user provides emphasis service, for domestic consumer provides standards service, for low value user provides low cost service, in the embodiment of the present invention, provide the method and system of differentiated service under a kind of POOL network environment.
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is described in detail.
Consult shown in Fig. 4, in the embodiment of the present invention, the idiographic flow user under POOL network environment being realized to differentiated service is as follows:
Step 400:SGSN receives Client-initiated service request.
In actual applications, Client-initiated service request, can be attachment request, also can be routing update request.When user initiates attachment or routing update request, wireless resident's Access Network (ResidentialAccess Network, RAN) NAS Node Selection Function (NAS node selection Function, NNSF) according to the mark routing iinformation of NRI in user PTMSI, user is assigned to specific SGSN.Time in user's first registration to POOL networking, because not having discernible NRI, user's poll can be assigned to any one SGSN in POOL group by NNSF mechanism by wireless net member.
Step 410:SGSN, when determining the NRI not comprising this SGSN in above-mentioned service request, obtains the Access Point Name APN information of user from HLR, and judges whether user belongs to this SGSN based on APN information, if, then perform step 420, otherwise, perform step 430.
In the embodiment of the present invention, at initial configuration phase, operation analysis system is provided with corresponding priority for each user in advance, and the priority of each user corresponding is provided with corresponding APN information respectively, and will arrange result preservation in hlr.Such as, the service class of user is divided into three different brackets by operation analysis system: high priority, medium priority and low priority, and according to the contribution margin of each user, corresponding service class is set for it: the service class of high-value user is set to high priority, the service class of domestic consumer is set to medium priority, the service class of low value user is set to low priority, simultaneously, for the user of high priority and low priority, define the special APN character string for characterizing consumer service class respectively in hlr.
On the other hand, have multiple SGSN in the group of SGSN POOL pond, and the quality of service that different SGSN provides is also different.In order to realize the fixed direction allocation of the user of different service class, need to have planned in advance the service class of the user that each SGSN carries and corresponding NRI, and reserve specific PTMSI field for the user of different service class.In the embodiment of the present invention, the PTMSI section reserved for the user of high priority is the 0-13 position that PTMSI encodes, the PTMSI section reserved for the user of low priority is the 24-29 position that PTMSI encodes, except the residue PTMSI section except the above-mentioned PTMSI section being the user of high priority and user's distribution of low priority, the i.e. 14-23 position of PTMSI coding is the PTMSI section for the user of medium priority reserves.
When user initiates attachment or update request, SGSN extracts quality of service (the Quality of Service of this user from relevant HLR, and the various log-on message such as APN information to leave this SGSN in inner QoS), and the service class of this user is determined based on this APN, judge whether the user of this service class belongs to this SGSN.
Step 420:SGSN is the PTMSI that user distributes the NRI comprising this SGSN, and indicating user adopts a PTMSI to use related service.
In actual applications, an above-mentioned PTMSI is the user ID of user in SGSN POOL, and user is follow-up when moving in SGSN POOL and use business, carries out various message communicating by means of this mark.
Step 430:SGSN is based on APN information, according to the corresponding relation of predefined APN information and PTMSI section, for user distributes corresponding 2nd PTMSI, include the NRI of another SGSN in the 2nd PTMSI, indicating user adopts the 2nd PTMSI to resend service request to another SGSN.
Particularly, in the embodiment of the present invention, first SGSN judges in this APN information, whether comprise special APN character string.When determining to comprise special APN character string in this APN information, SGSN judges whether the priority of the user that this special APN character string characterizes is high further, if, in the PTMSI section then reserved the user for high priority, i.e. the 0-13 position of PMSI coding, for user distributes the 2nd PTMSI, otherwise, in the PTMSI section that the user for low priority reserves, i.e. the 24-29 position of PTMSI coding, for user distributes the 2nd PTMSI.And when determining not comprise special APN character string in this APN information, in the residue PTMSI section of SGSN outside the PTMSI section of distributing for the user of high priority and the user of low priority, i.e. the 14-23 position of PTMSI coding, for user distributes the 2nd PTMSI.
Then, SGSN uses non-broadcasting Route Area identifier (non-broadcast-RAI) assembling attachment to accept (Attach Accept) information, force users launch position update request, and periodically routing update time (timer) value will be set to 4 seconds, the 2nd PTMSI distributed is handed down to user, activated user is to another SGSN(target SGSN simultaneously) again initiate routing update.The routing update request of user, according to the mark routing iinformation of the NRI in user the 2nd PTMSI, is sent to target SGSN by the NNSF of wireless RAN.When target SGSN receives Client-initiated routing update request, and when comprising the NRI of this target SGSN in the 2nd PTMSI determining this user, determine that the user is the user in this SGSN, for this user redistributes the 3rd PTMSI comprising above-mentioned NRI, indicating user adopts the 3rd PTMSI to use related service, wherein, the 3rd PTMSI is generally different PTMSI from the 2nd PTMSI and encodes.
Further, in the embodiment of the present invention, when SGSN is receiving Client-initiated service request, and when determining the NRI comprising this SGSN in this service request, just for this user redistributes the 3rd PTMSI of the NRI comprising this SGSN, indicating user adopts the 3rd PTMSI to use related service.
On the other hand, if the priority of user's service class after being registered in SGSN POOL SGSN there occurs change, can according to the corresponding relation of priority and APN information through subsystem, amendment user APN information in hlr.After HLR upgrades the APN information of user place SGSN, wait for that user initiates periodically routing update, re-execute step 330.
User is follow-up in SGSN POOL during initiating business request, and BSC/RNC according to the NRI in the PTMSI of user, can identify the SGSN of user's registration, the service request of user is sent to corresponding SGSN process.After SGSN receives the service request of user, the APN information of this user is sent to DNS.The APN information analysis request that DNS initiates according to the SGSN of different service class, return to specific GGSN address, such as, the SGSN of the service APN information analysis request initiated is provided for the user for low priority, return to the GGSN address of low priority, provide the SGSN of the service APN information analysis request initiated for the user for high priority.Return to the GGSN address of high priority.
Based on above-described embodiment, consult shown in Fig. 5, in the embodiment of the present invention, the system 50 realizing differentiated service under POOL network environment comprises:
Communication unit 500, for receiving Client-initiated service request.
Confirmation unit 501, for when determining the network resource identifier NRI not comprising SGSN in above-mentioned service request, obtains the APN information of user from HLR, and judges whether user belongs to this SGSN based on this APN information.
First allocation units 502, for when determining user attaching in this SGSN, for user distributes the PTMSI comprising the NRI of this SGSN, indicating user adopts a PTMSI to use related service.
Second allocation units 503, for when determining that user does not belong to this SGSN, based on this APN information, according to the corresponding relation of predefined APN information and PTMSI section, for user distributes corresponding 2nd PTMSI, include the NRI of another SGSN in 2nd PTMSI, indicating user adopts the 2nd PTMSI to resend service request to another SGSN.
Further, can also comprise:
Initial configuration unit 504, at initial configuration phase, in advance for each user arranges corresponding priority, and the priority of each user corresponding arranges corresponding APN information respectively, and will arrange result preservation in hlr.
Particularly, first the second allocation units 503 judge in APN information, whether comprise special APN character string; When determining to comprise special APN character string in APN information, second allocation units 503 judge whether the priority of the user that this special APN character string characterizes is high further, if, for user distributes the 2nd PTMSI in the PTMSI section then reserved the user for high priority, otherwise, for user distributes the 2nd PTMSI in the PTMSI section that the user for low priority reserves.On the other hand, when determining not comprise special APN character string in APN information, in the residue PTMSI section of the second allocation units 503 outside the PTMSI section of distributing for the user of high priority and the user of low priority, distribute the 2nd PTMSI for described user.
Particularly, second allocation units 503 are in advance for the user of high priority has reserved the PTMSI section of 0-13 position as the user of high priority of PTMSI coding, user for low priority has reserved the 24-29 position of PTMSI coding as the PTMSI section of the user of low priority, for having reserved 14-23 position that remaining PTMSI encodes as its PTMSI section except the user of high priority and low priority with outdoor user.
Further, can also comprise:
3rd allocation units 505, for when determining the NRI comprising SGSN in above-mentioned service request, for user redistributes the 3rd PTMSI of the NRI comprising this SGSN, indicating user adopts the 3rd PTMSI to use related service.
In sum, the data basis that user's contribution rate that technical scheme described in the embodiment of the present invention provides according to operation analysis system is analyzed as O&M, pre-set the priority of each user and plan the service class of each SGSN, high-value user and low value user are separated from common standard user, there is provided service pointedly, thus differentiated service is carried out in SGSN POOL, reduce complexity and the O&M cost of O&M means.In addition, the technical scheme of the embodiment of the present invention is without the need to changing the physical structure of existing PS core net, and by planning in advance and configuring, and can realize in conjunction with software simulating correlation function, exploitativeness is strong.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not depart from the spirit and scope of the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a method for differentiated service under pond group POOL network environment, is characterized in that, comprising:
Service universal grouping wireless business supporting node SGSN receives Client-initiated service request;
Described SGSN is when determining the network resource identifier NRI not comprising described SGSN in described service request; from attaching position register HLR, obtain the Access Point Name APN information of described user, and judge whether described user belongs to described SGSN based on described APN information;
If so, then described SGSN is that described user distributes the first grouping temporary mobile subscriber identity PTMSI comprising the NRI of described SGSN, and indicating user adopts a described PTMSI to use related service;
Otherwise, described SGSN is based on described APN information, according to the corresponding relation of predefined APN information and PTMSI section, for described user distributes corresponding 2nd PTMSI, include the NRI of another SGSN in described 2nd PTMSI, indicate described user to adopt described 2nd PTMSI to resend service request to another SGSN described.
2. the method for claim 1, is characterized in that, comprises further:
At initial configuration phase, in advance for each user arranges corresponding priority, and the priority of each user corresponding arranges corresponding APN information respectively, and will arrange result preservation in hlr.
3. the method for claim 1, is characterized in that, when described user does not belong to described SGSN, described SGSN is based on described APN information, according to the corresponding relation of predefined APN information and PTMSI section, for described user distributes corresponding 2nd PTMSI, comprising:
Described SGSN judges in described APN information, whether comprise special APN character string;
When determining to comprise special APN character string in described APN information, described SGSN judges whether the priority of the user that described special APN character string characterizes is high further, if, the 2nd PTMSI is distributed for described user in the PTMSI section then reserved the user for high priority, otherwise, in the PTMSI section that the user for low priority reserves, distribute the 2nd PTMSI for described user;
When determining not comprise special APN character string in described APN information, in the residue PTMSI section of described SGSN outside the PTMSI section of distributing for the user of high priority and the user of low priority, distribute the 2nd PTMSI for described user.
4. method as claimed in claim 3, it is characterized in that, the PTMSI section that the described user for high priority reserves is the 0-13 position of PTMSI coding, the PTMSI section that the described user for low priority reserves is the 24-29 position of PTMSI coding, and the residue PTMSI section outside the PTMSI section that the user of the described user for high priority and low priority distributes is the 14-23 position of PTMSI coding.
5. the method as described in any one of claim 1-4, is characterized in that, comprises further:
Described SGSN is when determining the NRI comprising described SGSN in described service request, and for described user redistributes the 3rd PTMSI comprising described NRI, indicating user adopts described 3rd PTMSI to use related service.
6. a system for differentiated service under pond group POOL network environment, is characterized in that, comprising:
Communication unit, for receiving Client-initiated service request;
Confirmation unit; for when determining the network resource identifier NRI not comprising SGSN in described service request; from attaching position register HLR, obtain the Access Point Name APN information of described user, and judge whether described user belongs to described SGSN based on described APN information;
First allocation units, for when determining described user attaching in described SGSN, for described user distributes the first grouping temporary mobile subscriber identity PTMSI comprising the NRI of described SGSN, indicating user adopts a described PTMSI to use related service;
Second allocation units, for when determining that described user does not belong to described SGSN, based on described APN information, according to the corresponding relation of predefined APN information and PTMSI section, for described user distributes corresponding 2nd PTMSI, include the NRI of another SGSN in described 2nd PTMSI, indicate described user to adopt described 2nd PTMSI to resend service request to another SGSN described.
7. system as claimed in claim 6, is characterized in that, comprise further:
Initial configuration unit, at initial configuration phase, in advance for each user arranges corresponding priority, and the priority of each user corresponding arranges corresponding APN information respectively, and will arrange result preservation in hlr.
8. system as claimed in claim 6, is characterized in that, described second allocation units specifically for:
Judge in described APN information, whether comprise special APN character string;
When determining to comprise special APN character string in described APN information, described second allocation units judge whether the priority of the user that described special APN character string characterizes is high further, if, the 2nd PTMSI is distributed for described user in the PTMSI section then reserved the user for high priority, otherwise, in the PTMSI section that the user for low priority reserves, distribute the 2nd PTMSI for described user;
When determining not comprise special APN character string in described APN information, in the residue PTMSI section of described second allocation units outside the PTMSI section of distributing for the user of high priority and the user of low priority, distribute the 2nd PTMSI for described user.
9. system as claimed in claim 8, is characterized in that, described second allocation units specifically for:
User for high priority reserves the PTMSI section of 0-13 position as the user of described high priority of PTMSI coding, user for low priority reserves the 24-29 position of PTMSI coding as the PTMSI section of the user of described low priority, for reserving 14-23 position that remaining PTMSI the encodes PTMSI section as the user with open air of the described user except high priority and low priority except the user of high priority and low priority with outdoor user.
10. the system as described in any one of claim 6-9, is characterized in that, comprises further:
3rd allocation units, for when described confirmation unit determines the NRI comprising SGSN in described service request, for described user redistributes the 3rd PTMSI comprising described NRI, indicating user adopts described 3rd PTMSI to use related service.
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