CN102104927B - System and method for carrying out access control on terminal - Google Patents
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- CN102104927B CN102104927B CN200910263900.4A CN200910263900A CN102104927B CN 102104927 B CN102104927 B CN 102104927B CN 200910263900 A CN200910263900 A CN 200910263900A CN 102104927 B CN102104927 B CN 102104927B
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Abstract
The invention provides a system and method for carrying out access control on a terminal. The method comprises the following steps: when a network element at a network side sends a neighbor cell access control request to a core network, the network element carries the information of all or a part of neighbor cells of a current service cell and a terminal identification, and the core network returns authorization information of the terminal in the neighbor cells to the network element at the network side through a neighbor cell access control response. By using the technical scheme of the invention, the network element for carrying out access control on the terminal can acquire the authorization information of the terminal in each neighbor cell, the network element for carrying out access control on the terminal can provide a judgment basis for selecting a target cell while carrying out neighbor cell switching of the terminal, and thus, a load balancing failure caused by a neighbor cell access control failure in a load balancing process can be reduced, and the success rate of switching is increased.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of system and method that terminal is carried out to access control.
Background technology
Home eNodeB (HNB, Home NodeB) be a kind of small-sized, lower powered base station, be deployed in the indoor place such as family and office, Main Function is higher service rate to be provided and to reduce to user to use the needed expense of high rate services, has made up the deficiency that existing distributed cellular radio communication system covers simultaneously.The advantage of Home eNodeB is economical, convenient, low-power output, plug and play etc.
Home eNodeB user is by Home eNodeB Access Network (HNB AN, Home NodeB AccessNetwork,) be connected to core net, Fig. 1 is Long Term Evolution (LTE, Long Term Evolution) home base station network schematic layout pattern in system, as shown in Figure 1, HNB AN is made up of jointly Home eNodeB and femto gateway (Home NodeB Gateway, HNB GW).The function that HNB GW mainly carries out comprises: verify the fail safe of Home eNodeB, the registration of processing Home eNodeB and access control, Home eNodeB is carried out operation maintenance management, configures and control Home eNodeB, is responsible for the data between exchcange core net and Home eNodeB according to Carrier Requirements.Fig. 2 is universal mobile telecommunications system (UMTS, Universal Mobile Telecommunications System) in home base station network schematic layout pattern, as shown in Figure 2, in UMTS network, Home eNodeB must be linked in core net by femto gateway, wherein the interface between Home eNodeB and femto gateway is Iuh interface, and femto gateway is Iu interface to the interface between core net.Macro base station is connected with core net by radio network controller, and the interface between macro base station and radio network controller is Iub interface.And between radio network controller, also can there is direct interface, be called Iur interface.As shown in Figure 1, for follow-up evolved Home eNodeB (HeNB, Home eNodeB), also can not be directly connected to core net by femto gateway.Interface between Home eNodeB and core net represents with S1, if femto gateway exists, the interface between Home eNodeB and femto gateway, femto gateway and core net is S1 interface.Between macro base station, can use direct interface X2 interface to connect.In subsequent descriptions, without loss of generality, use Home eNodeB to be used as the general designation of evolved Home eNodeB in Home eNodeB under UMTS system and LTE system.
Because Home eNodeB is the one of macro base station (NodeB or eNodeB), its dedicated resources as private user is deployed in the special field such as family, company or school, and some cell set that Home eNodeB covers become family base station overlay area.The access module of Home eNodeB has three kinds, is respectively: open mode, closed mode and mixed mode.The Home eNodeB of open mode allows all user's accesses; The Home eNodeB of closed mode only allows the user's access through authorizing, and as the user such as kinsfolk, member of community who authorizes, these are called closed user group (CSG, Closed SubscriberGroup) through the user who authorizes; The Home eNodeB of mixed mode allows all user's accesses, but enjoys the power of preferential or preferential access for the user who belongs to this CSG.Accordingly, Home eNodeB affiliated subdistrict is called CSG community.
Subscriber equipment (UE, User Equipment) USIM (3G system user identification card) in have a signing white list about CSG (white list or Allow CSG List), if white list is empty, show that this subscriber equipment does not belong to any closed user group; If white list has effective value, show that this subscriber equipment is the authorized user of these listed CSG communities.For the subscriber equipment that has white list, can reside in authorized CSG community, can not be resident for the closed mode CSG community of with no authorized.White list records subscriber equipment allow the CSG cell ID (CSG ID) of access, this white list is also preserved at the customer data base of core net simultaneously.In the time having the UE of white list and wish to reside in CSG community, the CSG ID under community is reported core net by Home eNodeB, checks whether the resident community of UE wish allows the access of UE, for closed mode CSG community by core net, only allow authorized user access, unauthorized user is forbidden access; For mixed mode CSG community, authorized user is enjoyed preferential or preferential access power, and this access control (Access Control, AC) is called as the access control based on CSG.Home eNodeB under open mode is the same with common macro base station, allows all legal user accesses.
For CSG community, not only there is global cell identity (CGI, Cell Global Identifier), also have CSG cell ID.Having different global cell identity CSG community can corresponding same CSG ID.In the time that Home eNodeB powers on registration, femto gateway can obtain CSGID, CGI and the access module of this Home eNodeB.In the time that Home eNodeB is directly connected with core net, core net can obtain CSG ID, CGI and the access module of these direct-connected Home eNodeB.Non-Home eNodeB is commonly referred to as base station or macro base station, and affiliated subdistrict is called macrocell.
Due to the mobility of UE, inevitably need Cong Yige community to move to the coverage of another community, in order to ensure the continuity of business, therefore need network assistance to switch.Wherein being called Inbound by the switching between macrocell XiangCSG community or CSG community switches.In Inbound switches because the specific properties of CSG community, the authorized user that need to be whether Target cell to UE judges, whether owing to existing direct interface to there is no final conclusion between macrocell YuCSG community or CSG community, therefore the switching between current I nbound switching flow and macrocell is distinguished to some extent in addition.Without loss of generality, the current flow process that Inbound switches in LTE system substantially as shown in Figure 3, is described below substantially:
UE sends to measure to source base station and reports;
Source base station reports the Target cell that judges that UE need to switch according to the measurement of UE, initiate to switch requirement to core net, in message with the contextual information of UE, and the information of Target cell, such as the cell ID (cell ID) of Target cell, the CSG mark (CSG ID) of community etc.;
Core net is done access control according to the information of switching the Target cell in requiring, judge whether current UE is the legal authorization user of target CS G community, if this UE can be with authorized user or unauthorized user access Target cell, flow process continues, otherwise core net is replied to switch to source base station and is prepared failed message, and handoff procedure finishes;
Core net sends handover request message to the gateway at target Home eNodeB place, in message with the contextual information of this UE, target cell information etc.;
Target femto gateway is done the checking of CSG according to information in message, judge that whether the CSG information of Target cell is correct;
Target femto gateway sends handover request message to target Home eNodeB;
Target Home eNodeB successfully receives the backward gateway of this UE to reply handover request ack message;
Target femto gateway continues to send handover request ack message to core net;
Core net sends switching command message to source base station after receiving handover request ack message;
Source base station is being received after message to UE transmission switching command message.
Switched compared with the switching between common macrocell by the visible Inbound of foregoing description, needing increases for the access control of UE and the proof procedure to Target cell CSG information.If the access control in handoff procedure and CSG authentication failed, may cause this switching unsuccessful, eNB is necessary for UE and reselects switching target small area, and this may cause the switching of UE to cross evening or signaling waste.If blind switching need to be initiated for certain special-purpose (such as for balanced load) in survey base station in source in addition, be that source survey does not need the measurement of UE and directly initiates the switching to a certain adjacent area, now source survey base station for UE the mandate in CSG community, adjacent area know nothing, therefore may cause blind handoff failure.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of system and method that terminal is carried out to access control, and the network element having solved because UE being done to access control cannot know that the authorization message of UE in each adjacent area causes UE to carry out the problem of blind handoff failure.
In order to address the above problem, the invention provides a kind of method of terminal being carried out to access control, comprise: network side network element carries information and the described terminal iidentification of all or part adjacent area of current service cell in the time that core net sends adjacent area access control request, by described terminal, the authorization message in described adjacent area is back to described network side network element by adjacent area access control response to described core net.
Further, described core net is received after the access control request of described adjacent area, judge according to the information of adjacent area wherein whether this adjacent area is present in the signing white list of described terminal, be to judge that described terminal is the authorized user of this adjacent area, otherwise judge that described terminal is not the authorized user of this adjacent area;
Described core net adopts default indication information to represent the authorization message of described terminal in each adjacent area in the time that described network side network element returns to adjacent area access control response.
Further, described network side network element is to send adjacent area access control request to core net in the time of the first access network of terminal, or sends adjacent area access control request to core net in the time that the signing white list of knowing terminal changes.
Further, in LTE system, described network side network element is evolution Home eNodeB, evolution femto gateway or macro base station;
In UMTS system, described network side network element is Home eNodeB, macro base station or radio network controller.
Further, in the time of the first access network of terminal, the adjacent area access control request that described network side network element sends to core net is initial terminal message;
The adjacent area access control response that described core net is returned to described network side network element is direct-sending message.
Further, in the time that the signing white list of terminal changes, the signing white list of described terminal or core net informing network side network element terminal is upgraded, and described network side network element sends adjacent area access control request to core net after receiving described notice.
Further, described network side network element is Home eNodeB and while being connected with core net by femto gateway, the adjacent area access control request that described Home eNodeB sends is to be pass-through to core net by base-station gateway; The adjacent area access control response that described core net is returned is to be pass-through to described Home eNodeB by base-station gateway;
Described network side network element is macro base station and while being connected with core net by radio network controller, the adjacent area access control request that described macro base station sends is to be pass-through to core net by radio network controller; The adjacent area access control response that described core net is returned is to be pass-through to macro base station by radio network controller.
Further, the cell ID that the information of described adjacent area is adjacent area and/or the closed user group of adjacent area mark.
Further, the information of described adjacent area is pre-configured in described network side network element, or network side network element obtains from adjacent area.
The present invention also provides a kind of system of terminal being carried out to access control, comprises terminal, network side network element and core net;
Described network side network element, for carrying information and the described terminal iidentification of all or part adjacent area of current service cell in the time that core net sends adjacent area access control request;
Described core net, for being back to described network side network element in the authorization message of described adjacent area by adjacent area access control response by described terminal.
Further, described core net is also for receiving after the access control request of described adjacent area, judge according to the information of adjacent area wherein whether this adjacent area is present in the signing white list of described terminal, be to judge that described terminal is the authorized user of this adjacent area, otherwise judge that described terminal is not the authorized user of this adjacent area;
Described core net adopts default indication information to represent the authorization message of described terminal in each adjacent area in the time that described network side network element returns to adjacent area access control response.
Further, described network side network element is to send adjacent area access control request to core net in the time of the first access network of terminal, or sends adjacent area access control request to core net in the time that the signing white list of knowing terminal changes.
Further, in LTE system, described network side network element is evolution Home eNodeB, evolution femto gateway or macro base station;
In UMTS system, described network side network element is Home eNodeB, macro base station or radio network controller.
Further, described terminal also for notifying its signing white list of described network side network element to change in the time that its signing white list changes; Or,
Described core net also for notifying the white list of terminal unit contractual described in described network side network element to change in the time that the signing white list of terminal changes.
In sum, the present invention proposes a kind of system and method that terminal is carried out to access control, can make the network element of UE being done to access control know the authorization message of UE in each adjacent area, the judgement foundation of select target community is provided in the time UE being carried out to adjacent area switching for UE being made to the network element of access control, thereby can reduce in load balancing process because the load balancing that adjacent area access control unsuccessfully causes failure increases handover success rate.
Brief description of the drawings
Fig. 1 is LTE network architecture figure;
Fig. 2 is UMTS network architecture figure;
Fig. 3 is the Inbound switching flow schematic diagram of UE in prior art;
Fig. 4 is the inventive method flow chart;
Fig. 5 is the adjacent area access control flow chart of application example one of the present invention;
Fig. 6 is the adjacent area access control flow chart of application example two of the present invention.
Embodiment
The present invention proposes a kind of system and method that terminal is carried out to access control, network side network element carries information and the described terminal iidentification of all or part adjacent area of current service cell in the time that core net sends adjacent area access control request, and by this terminal, the authorization message in adjacent area is back to network side network element by adjacent area access control response to core net.Network side network element is follow-up is load balancing or can be according to this as one of basis for estimation while doing switch decision for this UE.
The present embodiment provides a kind of system of terminal being carried out to access control, comprises terminal, network side network element and core net;
Network side network element, for carrying information and the terminal iidentification of all or part adjacent area of current service cell in the time that core net sends adjacent area access control request;
Core net, for being back to network side network element in the authorization message of adjacent area by adjacent area access control response by terminal.
Core net, also for receiving after the access control request of adjacent area, judges according to the information of adjacent area wherein whether this adjacent area is present in the signing white list of terminal, is to judge that terminal is the authorized user of this adjacent area, otherwise judges that terminal is not the authorized user of this adjacent area;
Core net adopts default indication information to represent the authorization message of terminal in each adjacent area in the time that network side network element returns to adjacent area access control response.
Network side network element is to send adjacent area access control request to core net in the time of the first access network of terminal, or sends adjacent area access control request to core net in the time that the signing white list of knowing terminal changes.
In LTE system, network side network element is evolution Home eNodeB, evolution femto gateway or macro base station;
In UMTS system, network side network element is Home eNodeB, macro base station or radio network controller.
Terminal also changes for its signing white list of informing network side network element in the time that its signing white list changes; Or,
Core net also changes for the white list of informing network side network element terminal unit contractual in the time that the signing white list of terminal changes.
The present embodiment provides a kind of method of terminal being carried out to access control, as shown in Figure 4, comprises the following steps:
Step 401: network side network element sends adjacent area access control request to core net, the information and the UE that in this request, carry all or part adjacent area of current service cell identify;
In LTE system, network side network element can be evolution Home eNodeB or evolution femto gateway or macro base station; In UMTS system, network side network element can be Home eNodeB or macro base station or radio network controller.
Network side network element can be to send adjacent area access control request to core net in the time of the first access network of this UE, can be also to send adjacent area access control request to core net in the time that the signing white list of knowing this UE changes.
After the signing white list of UE changes, can be that its signing white list of UE informing network side network element changes, can be also that the signing white list of core net informing network side network element UE changes.
The adjacent area access control request that network side network element sends can be a newly-increased message, also the process that in can multiplexing current agreement, S1 mouth/Iu mouth have existed, such as passing through initial UE message (Initial UEMessage) flow process, or by flow processs such as up direct transferring (Uplink NAS Transfer), core net is set up request (Initial UE Context Setup Request) process by initial UE context afterwards in judgement, or descending direct transferring (Downlink NAS Transfer) process, or response message is fed back to Current Serving BTS by the message such as (Direct Transfer) that direct transfers.
If network side network element is Home eNodeB, and this Home eNodeB is while being connected with core net by femto gateway, and the adjacent area access control request that Home eNodeB sends is to be pass-through to core net by base-station gateway;
If network side network element is macro base station and while being connected with core net by radio network controller, the adjacent area access control request that macro base station sends is to be pass-through to core net by radio network controller;
The information of all or part adjacent area of current service cell, can be pre-configured, as configured by operation management maintain (Operation Administration and Maintenance), or be configured on Home eNodeB by Home eNodeB management system (Home nodeB Management System, HMS); Also can be that network side network element obtains from adjacent area, as passed through Automatic Neighboring Relation (Automatic Neighborhood Relation, ANR) function from adjacent area automatic acquisition, or obtain from adjacent area by direct interface.
Step 402: core net is received adjacent area access control request, judge according to the information of adjacent area wherein whether this adjacent area is present in the signing white list of this UE, be to judge that this UE is the authorized user of this adjacent area, otherwise judge that this UE is not the authorized user of this adjacent area.
Step 403: core net is returned to adjacent area access control response to network side network element, wherein carries the authorization message of UE in each adjacent area;
Core net can adopt default indication information to represent the authorization message of this UE in each adjacent area (each adjacent area that carry in referring to an access the request of control each adjacent area) herein in the time that network side network element returns to adjacent area access control response, adopt 1 bit signalling to represent the authorization message of this UE in certain adjacent area as can be, but not limited to, in the time that this signaling is 1 (or 0), represent that this UE authorizes in this adjacent area, in the time that this signaling is 0 (or 1), represent this UE unauthorized in this adjacent area.
If network side network element is Home eNodeB, and this Home eNodeB is while being connected with core net by femto gateway, and the adjacent area access control response that core net is returned is to be pass-through to Home eNodeB by base-station gateway.If network side network element is macro base station and while being connected with core net by radio network controller, the adjacent area access control response that core net is returned is to be pass-through to macro base station by radio network controller.
Step 404: network side network element is received after adjacent area access control response message, preserves the authorization message of UE in each adjacent area.
Optionally, the adjacent area access control result that network side network element does, UE, in the authorization conditions of each adjacent area, also can pass to target side by switching command in handoff procedure, judgement foundation when target side can continue to use this information to switch as UE next time.
In LTE system, core net refers to MME; In UMTS system, core net refers to CN.
Further describe the present invention by application example below
Application example one, taking network side network element as Home eNodeB (HNB), and HNB is connected to example by HNB GW and core net and further illustrates the present invention, concrete implementation step as shown in Figure 5:
Step 501: in the time of the first access network of UE, HNB initiates initial UE message (Initial UE Message) to HNB GW, in message, carry the information of all or part adjacent area of the current service cell at UE place, such as the cell ID (Cell ID) of adjacent area and/or the CSG of adjacent area mark (CSG ID) etc., and the identification information of current UE.
Step 502: initial UE information (Initial UE Message) is sent to core net by femto gateway HNB GW.
Step 503: core net is received after this initial UE message judge whether current UE is the authorized user of each adjacent area, judged whether the CSG information of each adjacent area in message is present in the signing white list of this UE.
Step 504: core net is replied femto gateway HNB GW by judged result by direct-sending message (Direct Transfer), in message, whether be the indication information of each adjacent area authorized user with instruction current UE, such as using true (TRUE) to represent that UE is the authorized user of certain adjacent area, represent that with false (FALSE) UE is not the authorized user of certain adjacent area.
Step 505:HNB GW will cross direct-sending message (Direct Transfer) and pass through HNB, in message, whether be the indication information of each adjacent area authorized user with instruction current UE, such as using true (TRUE) to represent that UE is the authorized user of certain adjacent area, represent that with false (FALSE) UE is not the authorized user of certain adjacent area.
Step 506:HNB receives after this direct-sending message, can store this authorization message.As this HNB because load is too high need to do load balancing time, can use this information with the load balancing Target cell that elects according to one of.
Application example two, taking network side network element as evolved Home eNodeB (HeNB) is as example, as shown in Figure 6, comprises the following steps:
Step 601: in the time that UE is in connected state, variation has occurred in the signing white list of UE, MME initiates the signing white list update message of UE to Current Serving BTS HeNB.
Step 602:HeNB is receiving after this white list update message, initiate adjacent area access control request to MME, in request, carry the information of all or part adjacent area of the current service cell at UE place, such as the cell ID (Cell ID) of adjacent area or the CSG of adjacent area mark (CSG ID) etc., and the identification information of current service UE, such as the S1 mouth mark (S1AP ID) of UE etc.
Step 603:MME receives after the access control request of adjacent area judge according to the information of the adjacent area in request whether current UE is the authorized user of each adjacent area, judges whether the CSG information of each adjacent area in message is present in the signing white list of this UE.And judged result is replied to Home eNodeB HeNB by adjacent area access control response message, in message, whether be the indication information of each adjacent area authorized user with instruction current UE, such as using true (TRUE) to represent that UE is the authorized user of certain adjacent area, represent that with false (FALSE) UE is not the authorized user of certain adjacent area.
Step 604:HeNB receives after this response, can store this judgement information.In the time that this HeNB need to initiate blind the cutting to this UE, can use this information with elect blind cut Target cell according to one of, the community that preferential selection has been authorized is as Target cell, thereby improves handover success rate.
Claims (12)
1. one kind is carried out the method for access control to terminal, comprise: network side network element carries information and the described terminal iidentification of all or part adjacent area of current service cell in the time that core net sends adjacent area access control request, by described terminal, the authorization message in described adjacent area is back to described network side network element by adjacent area access control response to described core net;
Described network side network element is to send adjacent area access control request to core net in the time of the first access network of terminal, or sends adjacent area access control request to core net in the time that the signing white list of knowing terminal changes.
2. the method for claim 1, is characterized in that:
Described core net is received after the access control request of described adjacent area, judge according to the information of adjacent area wherein whether this adjacent area is present in the signing white list of described terminal, be to judge that described terminal is the authorized user of this adjacent area, otherwise judge that described terminal is not the authorized user of this adjacent area;
Described core net adopts default indication information to represent the authorization message of described terminal in described adjacent area in the time that described network side network element returns to adjacent area access control response.
3. the method as described in claim as arbitrary in claim 1 to 2, is characterized in that:
In LTE system, described network side network element is evolution Home eNodeB, evolution femto gateway or macro base station;
In UMTS system, described network side network element is Home eNodeB, macro base station or radio network controller.
4. the method for claim 1, is characterized in that:
In the time of the first access network of terminal, the adjacent area access control request that described network side network element sends to core net is initial terminal message;
The adjacent area access control response that described core net is returned to described network side network element is direct-sending message.
5. the method for claim 1, is characterized in that:
In the time that the signing white list of terminal changes, the signing white list of described terminal or core net informing network side network element terminal is upgraded, and described network side network element sends adjacent area access control request to core net after receiving described notice.
6. method as claimed in claim 3, is characterized in that:
Described network side network element is Home eNodeB and while being connected with core net by femto gateway, the adjacent area access control request that described Home eNodeB sends is to be pass-through to core net by base-station gateway; The adjacent area access control response that described core net is returned is to be pass-through to described Home eNodeB by base-station gateway;
Described network side network element is macro base station and while being connected with core net by radio network controller, the adjacent area access control request that described macro base station sends is to be pass-through to core net by radio network controller; The adjacent area access control response that described core net is returned is to be pass-through to macro base station by radio network controller.
7. the method for claim 1, is characterized in that:
The information of described adjacent area is the cell ID of adjacent area and/or the closed user group of adjacent area mark.
8. the method for claim 1, is characterized in that:
The information of described adjacent area is pre-configured in described network side network element, or network side network element obtains from adjacent area.
9. a system of terminal being carried out to access control, comprises terminal, network side network element and core net; It is characterized in that:
Described network side network element, for carrying information and the described terminal iidentification of all or part adjacent area of current service cell in the time that core net sends adjacent area access control request;
Described core net, for being back to described network side network element in the authorization message of described adjacent area by adjacent area access control response by described terminal;
Wherein, described network side network element is to send adjacent area access control request to core net in the time of the first access network of terminal, or sends adjacent area access control request to core net in the time that the signing white list of knowing terminal changes.
10. system as claimed in claim 9, is characterized in that:
Described core net is also for receiving after the access control request of described adjacent area, judge according to the information of adjacent area wherein whether this adjacent area is present in the signing white list of described terminal, be to judge that described terminal is the authorized user of this adjacent area, otherwise judge that described terminal is not the authorized user of this adjacent area;
Described core net adopts default indication information to represent the authorization message of described terminal in described adjacent area in the time that described network side network element returns to adjacent area access control response.
System as described in 11. claims as arbitrary in claim 9 to 10, is characterized in that:
In LTE system, described network side network element is evolution Home eNodeB, evolution femto gateway or macro base station;
In UMTS system, described network side network element is Home eNodeB, macro base station or radio network controller.
12. systems as claimed in claim 9, is characterized in that:
Described terminal also for notifying its signing white list of described network side network element to change in the time that its signing white list changes; Or,
Described core net also for notifying the white list of terminal unit contractual described in described network side network element to change in the time that the signing white list of terminal changes.
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| CN200910263900.4A CN102104927B (en) | 2009-12-21 | 2009-12-21 | System and method for carrying out access control on terminal |
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| CN102917423B (en) * | 2011-08-05 | 2018-06-22 | 中兴通讯股份有限公司 | Member condition auxiliary information update method and device, base station switch method and device |
| CN103889003B (en) * | 2012-12-21 | 2018-07-10 | 中国电信股份有限公司 | Cut-in method, access network and the aggregation gateway of long-term evolving network |
| EP3499968B1 (en) | 2016-08-10 | 2022-11-16 | Nec Corporation | Radio access network node, wireless terminal, core network node, and methods for these |
| CN109565732B (en) | 2016-08-10 | 2021-10-22 | 日本电气株式会社 | Wireless access network node, wireless terminal, core network node and method thereof |
| CN113507734A (en) | 2016-08-10 | 2021-10-15 | 日本电气株式会社 | Radio access network node, core network node and method thereof |
| CN113676973A (en) | 2016-08-10 | 2021-11-19 | 日本电气株式会社 | Wireless terminal, core network node and method thereof |
| CN108810941B (en) | 2017-05-05 | 2021-04-20 | 华为技术有限公司 | Network access method, network equipment and terminal |
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| WO2007057732A1 (en) * | 2005-11-15 | 2007-05-24 | Alcatel Lucent | Access network, gateway and management server for a cellular wireless communication system |
| CN101516116A (en) * | 2009-03-19 | 2009-08-26 | 上海华为技术有限公司 | Switching method, device and communication system |
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| WO2007057732A1 (en) * | 2005-11-15 | 2007-05-24 | Alcatel Lucent | Access network, gateway and management server for a cellular wireless communication system |
| CN101553020A (en) * | 2008-03-31 | 2009-10-07 | 中兴通讯股份有限公司 | Closed user group subdistrict access method based on evolution base station under connecting mode |
| CN101516116A (en) * | 2009-03-19 | 2009-08-26 | 上海华为技术有限公司 | Switching method, device and communication system |
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| CN102104927A (en) | 2011-06-22 |
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