CN101547406B - Access control method for user equipment (UE) entering closed subscriber group (CSG) cell - Google Patents
Access control method for user equipment (UE) entering closed subscriber group (CSG) cell Download PDFInfo
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- CN101547406B CN101547406B CN2008100875281A CN200810087528A CN101547406B CN 101547406 B CN101547406 B CN 101547406B CN 2008100875281 A CN2008100875281 A CN 2008100875281A CN 200810087528 A CN200810087528 A CN 200810087528A CN 101547406 B CN101547406 B CN 101547406B
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Abstract
The invention discloses an access control method for UE entering a CSG cell, which comprises that: when the UE is accessed to a base station, the base station acquires CSG white list of the UE; the base station determines AS white list of the UE according to the CSG white list of the UE and CSG neighborhood cell information, and transmits the AS white list to the UE in downlink signaling; when entering the CSG cell in the AS white list, the UE measures the CSG cell, and sends a measurement report to the base station; and the base station decides whether the UE can be accessed to the CSG cell according to a Phy ID of the CSG cell in the measurement report reported by the UE. The method carries out auxiliary access control of the UE based on the base station for the UE moved to the CSG cellunder an RRC connection state, and reduces the measurement load of the UE and the processing load of the base station.
Description
Technical field
The present invention relates to field of wireless communication; Relate in particular in LTE (Long Term Evolution, Long Term Evolution) system, RRC (Radio Resource Control; Radio Resource control) UE (the User Equipment under the connection status; Subscriber equipment), get into the connection control method of CSG (Closed Subscriber Group closed user group, authorized users group) sub-district.
Background technology
Cellular radio communication system mainly is made up of terminal, base station and core net, and is as shown in Figure 1.The network that the base station is formed is called wireless access network, and (Radio Access Network RAN), is responsible for the Access Layer affairs, such as the management of Radio Resource.Can there be physics or connection in logic according to actual conditions between the base station, like the base station among Fig. 11 and base station 2 or base station 3.Each base station can (Core Network, CN) node connects with one or more than one core net.Core net is responsible for the Non-Access Stratum affairs, such as position renewal etc., and is the anchor point of user plane.The terminal be meant can with the various device of cellular radio communication network communication, such as mobile phone or notebook computer etc.
If an operator is in the indoor sub-district that disposes the LTE connecting system of family; Insert these indoor cell to the Qos of system (Quality of Service in order to prevent owing to cross the multi-user; Service quality) influence; The UE that so just needs restriction only to belong to particular demographic can be linked into this sub-district, and this sub-district that allows certain customers to insert is referred to as the CSG sub-district.And for this CSG sub-district, what its charging maybe be than macrocell is cheap.
A CSG zone is represented with a TA (Tracking Area, tracing area) ID (Identification, identifier).CSG zone has comprised or one group of sub-district that the user that can only allow to belong to particular group inserts.A CSG zone possibly be made up of the single subdistrict that family uses, and also possibly be made up of a plurality of sub-districts in the campus.A sub-district can only belong to certain TA or CSG, and TA can not overlap each other, and CSG can not overlap each other.TA ID identifies through TAC (Tracking Area Code, Tracking Area Code) and PLMN (public land mobile network, public land mobile network) ID, when network is shared, and TAC of Cell Broadcast CB and a plurality of PLMN ID.Whether base station (eNB) is the CSG sub-district at the broadcast cell of eating dishes without rice or wine.
Preserve the CSG whitelist (closed user group white list) that allows to insert the CSG sub-district in the UE, this whitelist is made up of the TA ID set in the CSG zone that UE can insert.Have only the TA ID that includes certain CSG sub-district as the TA ID whitelist of UE, UE could allow to be linked into this CSG sub-district.
When UE is in RRC_IDLE (RRC idle) state, its CSG cell mobility control is based on UE, and it is resident that UE judges according to the CSG whitelist that preserves and the system message of reading certain CSG sub-district whether certain CSG sub-district is fit to.Have only when this CSG sub-district belongs to its whitelist, just allow UE cell selecting/gravity treatment to this CSG sub-district.Because UE is in idle condition, so in general UE always always can read the system message of adjacent cell; Be in RRC_CONNECTED (RRC connection) state and work as UE, how carry out also not definition of CSG sub-district access control, one of them reason is can produce very big influence to current communication process because read adjacent cell at the RRC_CONNECTED state.
Summary of the invention
The technical problem that the present invention will solve is exactly to propose the connection control method that a kind of UE gets into the CSG sub-district, and in the LTE system, under the RRC connection status, the UE that moves to the CSG sub-district carries out access control, and is less to current communication influence simultaneously.
In order to solve the problems of the technologies described above; The present invention provides a kind of user equipment (UE) to get into the connection control method of closed user group CSG sub-district; Be applied to the situation that the UE under the Long Term Evolution LTE system wireless resource control RRC connection status gets into the CSG sub-district, comprise the steps:
When (1) UE was linked into certain base station, this base station obtained the closed user group white list CSGwhitelist of this UE;
(2) the Access Layer white list AS whitelist of this UE is confirmed according to CSG whitelist and the CSG neighboring BS information of this UE in this base station, and said AS whitelist is passed to UE in downlink signaling;
(3) when this UE gets into the CSG sub-district among the AS whitelist, measure this CSG sub-district, send measurement report to the base station;
(4) whether the physical layer identifications symbol PhyID of CSG sub-district this UE that makes a strategic decision can be linked into said CSG sub-district in the measurement report that reports according to this UE of base station.
Further, in the said step (1), the base station obtains the CSG whitelist that this UE can insert the CSG sub-district from mobile management entity MME; Perhaps, the base station obtains the CSG whitelist that it can insert the CSG sub-district from this UE; Perhaps, the base station obtains the CSG whitelist that this UE can insert the CSG sub-district through X2 interface from other base station.
Further, in the said step (1), the CSG whitelist that UE can insert the CSG sub-district is just removed to obtain in the base station when the CSG adjacent area is arranged.
Further, in the said step (2), the base station is sent UE with AS whitelist through the signaling of rrc layer.
Further, the signaling of said rrc layer is the RRC reallocation message.
Further, in the said step (3), after said UE measures the CSG sub-district, measure criterion, just send measurement report to the base station if this CSG cell signal satisfies.
Further, in the said step (4), be that which CSG sub-district is satisfied the measurement criterion if the base station is not sure of according to the Phy ID that reports, then whether belong to CSGwhitelist and confirm whether this UE can be linked into said CSG sub-district according to tracing area indications TA ID.
Further, be that which CSG sub-district is satisfied the measurement criterion if the base station is not sure of according to the Phy ID that reports, the TA ID of said CSG sub-district is removed to read through downlink signaling notice UE in then said base station.
Further, said UE reads after the TA ID of CSG sub-district, if UE read TA ID belong to CSG whitelist, then this TA ID is reported the base station, base station judges belongs to CSGwhitelist, allows to insert, and UE is switched to this CSG sub-district; If what UE read TA ID does not belong to CSG whitelist, access failure then, UE reads end through up signaling base station TA ID.
Further, said AS whitelist is made up of the Phy ID of CSG sub-district.
The present invention can move to the UE of CSG sub-district to being under the RRC connection status, carries out the auxiliary access control based on the base station of UE, and the method can limit UE and only some CSG sub-district measured, and has reduced the measurement load of UE and the processing load of base station.
Description of drawings
Fig. 1 is the cellular radio communication system sketch map;
Fig. 2 is an embodiment of the invention flow chart;
Fig. 3 is a CSG subzone network topological diagram.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
As shown in Figure 2, the embodiment of the invention comprises the steps:
Wherein, The base station can be from MME (Mobility Management Entity; Mobile management entity) obtains the CSG whitelist that UE can insert the CSG sub-district; Also can be to obtain the CSG whitelist that it can insert the CSG sub-district from this UE, can also be to obtain from other base station through X2 interface (interface between base station and the base station is an X2 interface);
In order to save message traffic, can be when there be the CSG adjacent area base station, just remove to obtain the CSG whitelist that UE can insert the CSG sub-district;
Wherein, said AS whitelist is made up of the Phy ID (Physical Identification, physical layer identifications symbol) of CSG sub-district;
Said AS whitelist can issue UE such as the RRC reallocation message through the signaling of rrc layer;
Whether the Phy ID of CSG sub-district this UE that makes a strategic decision can be linked into said CSG sub-district in the measurement report that step 204, base station report according to this UE.
In this step; If it is that which CSG sub-district is satisfied the measurement criterion that the base station is not sure of according to the Phy ID that reports; Then TA ID is removed to read through downlink signaling notice UE in the base station, whether belongs to CSG whitelist according to TA ID and confirms whether this UE can be linked into said CSG sub-district:
That is: UE reads the TA ID of CSG sub-district, if UE read TA ID belong to CSG whitelist, then this TA ID is reported the base station, base station judges belongs to CSG whitelist, allows to insert, and UE is switched to this CSG sub-district; If what UE read TA ID does not belong to CSG whitelist, access failure then, the up signaling of UE base station TA ID reads end.
With concrete application example the present invention is more described in detail below:
Application example 1:
UE sets up process through the RRC connection, sets up RRC with macrocell shown in Figure 3 and is connected, and the base station has obtained the CSG whitelist{TA ID=5 of UE, TA ID=6} through the RRC connection procedure.6 CSG Microcells are arranged in this macrocell, and its TA ID and Phy ID are as shown in Figure 3.
Base station lookups has CSG sub-district #1 and CSG sub-district #6 to the CSG adjacent area of TA ID=5; The Phy ID of two sub-districts is respectively 34 and 20; Not finding the CSG adjacent area of TA ID=6, is { Phy ID=34, Phy ID=20} so composition UE can insert CSG sub-district AS whitelist.Measurement configuration message is sent to UE in the base station, carries UE in the message and can insert CSG sub-district AS whitelist{Phy ID=34, Phy ID=20}.
UE gets into the coverage of CSG sub-district #5.UE finds the Phy ID=18 of this CSG sub-district, does not belong to UE and can insert CSG sub-district AS whitelist{Phy ID=34, and Phy ID=20} does not measure this sub-district, does not also send measurement report to the base station.
Application example 2:
UE switch to get into macrocell shown in Figure 3, and macro cell base station is through handoff procedure, has obtained the CSG whitelist{TA ID=5 of UE, TA ID=6} from former base station through X2 interface.6 CSG Microcells are arranged in this macrocell, and its TA ID and Phy ID are as shown in Figure 3.
Base station lookups has CSG sub-district #1 and CSG sub-district #6 to the CSG adjacent area of TA ID=5; The Phy ID of two sub-districts is respectively 34 and 20; Not finding the CSG adjacent area of TA ID=6, is { Phy ID=34, Phy ID=20} so composition UE can insert CSG sub-district AS whitelist.Measurement configuration message is sent to UE in the base station, carries UE in the message and can insert CSG sub-district AS whitelist{Phy ID=34, Phy ID=20}.
UE gets into the coverage of CSG sub-district #6.UE finds the Phy ID=20 of this CSG sub-district, belongs to UE and can insert CSG sub-district AS whitelist{Phy ID=34, and Phy ID=20} measures this sub-district, satisfies the measurement criterion if UE judges CSG sub-district #6 signal, sends measurement report to the base station.The base station is according to the Phy ID=20 that reports, and searching its corresponding CSG sub-district is CSG sub-district #6, and its TAID=5 belongs to the CSG whitelist of UE, and base station judges allows to be linked into CSG sub-district #6.
Application example 3:
UE initiates new calling or switches to get into macrocell at macrocell, and macro cell base station does not have the CSG whitelist information of UE.Macro cell base station is through the S1 interface, obtains the CSGwhitelist{TA ID=5 of UE, TA ID=6} from MME.6 CSG Microcells are arranged in this macrocell, and its TA ID and Phy ID are as shown in Figure 3.
Base station lookups has CSG sub-district #1 and CSG sub-district #6 to the CSG adjacent area of TA ID=5; The Phy ID of two sub-districts is respectively 34 and 20; Not finding the CSG adjacent area of TA ID=6, is { Phy ID=34, Phy ID=20} so composition UE can insert CSG sub-district AS whitelist.Measurement configuration message is sent to UE in the base station, carries UE in the message and can insert CSG sub-district AS whitelist{Phy ID=34, Phy ID=20}.
UE gets into the coverage of CSG sub-district #3.UE finds the Phy ID=34 of this CSG sub-district, belongs to UE and can insert CSG sub-district AS whitelist{Phy ID=34, and Phy ID=20} measures this sub-district, satisfies the measurement criterion if UE judges CSG sub-district #3 signal, sends measurement report to the base station.The base station is according to the Phy ID=34 that reports, and being not sure of UE is that CSG sub-district #1 or CSG sub-district #3 satisfy the measurement criterion.TA ID is removed to read through downlink signaling notice UE in the base station.UE reads CSG sub-district TA ID=9, does not belong to CSG whitelist, access failure, and the up signaling of UE base station TA ID reads end.
Application example 4:
UE initiates new calling or switches to get into macrocell at macrocell, and macro cell base station does not have the CSG whitelist information of UE.Macro cell base station is through the S1 interface, obtains the CSGwhitelist{TA ID=5 of UE, TA ID=6} from MME.6 CSG Microcells are arranged in this macrocell, and its TA ID and Phy ID are as shown in Figure 3.
There are CSG sub-district #1 and CSG sub-district #6 in the CSG adjacent area of base station lookups TA ID=5; The Phy ID of two sub-districts is respectively 34 and 20; Not finding the CSG adjacent area of TA ID=6, is { Phy ID=34, Phy ID=20} so composition UE can insert CSG sub-district AS whitelist.Measurement configuration message is sent to UE in the base station, carries UE in the message and can insert CSG sub-district AS whitelist{Phy ID=34, Phy ID=20}.
UE gets into the coverage of CSG sub-district #1.UE finds the Phy ID=34 of this CSG sub-district, belongs to UE and can insert CSG sub-district AS whitelist{Phy ID=34, and Phy ID=20} measures this sub-district, satisfies the measurement criterion if UE judges CSG sub-district #1 signal, sends measurement report to the base station.The base station is according to the Phy ID=34 that reports, and being not sure of UE is that CSG sub-district #1 or CSG sub-district #3 satisfy the measurement criterion.TA ID is removed to read through downlink signaling notice UE in the base station.UE reads CSG sub-district TA ID=5, belongs to CSG whitelist, the TA ID=5 to report CSG sub-district, base station.The base station confirms it is CSG sub-district #1 according to TA ID=5, and base station judges belongs to CSG whitelist, judges to allow to insert, and can UE be switched to CSG sub-district #1.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the connection control method of a user equipment (UE) entering closed user group CSG sub-district is applied to the situation that the UE under the Long Term Evolution LTE system wireless resource control RRC connection status gets into the CSG sub-district, it is characterized in that, comprises the steps:
When (1) UE was linked into certain base station, this base station obtained the closed user group white list CSG whitelist of this UE;
(2) the Access Layer white list AS whitelist of this UE is confirmed according to CSG whitelist and the CSG neighboring BS information of this UE in this base station, and said AS whitelist is passed to UE in downlink signaling;
(3) when this UE gets into the CSG sub-district among the AS whitelist, measure this CSG sub-district, send measurement report to the base station;
(4) whether the physical layer identifications symbol Phy ID of CSG sub-district this UE that makes a strategic decision can be linked into said CSG sub-district in the measurement report that reports according to this UE of base station.
2. the method for claim 1 is characterized in that, in the said step (1), the base station obtains the CSG whitelist that this UE can insert the CSG sub-district from mobile management entity MME; Perhaps, the base station obtains the CSG whitelist that it can insert the CSG sub-district from this UE; Perhaps, the base station obtains the CSG whitelist that this UE can insert the CSG sub-district through X2 interface from other base station.
3. the method for claim 1 is characterized in that, in the said step (1), the CSG whitelist that UE can insert the CSG sub-district is just removed to obtain in the base station when the CSG adjacent area is arranged.
4. the method for claim 1 is characterized in that, in the said step (2), the base station is sent UE with AS whitelist through the signaling of rrc layer.
5. method as claimed in claim 4 is characterized in that, the signaling of said rrc layer is the RRC reallocation message.
6. the method for claim 1 is characterized in that, in the said step (3), after said UE measures the CSG sub-district, measures criterion if this CSG cell signal satisfies, and just sends measurement report to the base station.
7. method as claimed in claim 6; It is characterized in that; In the said step (4); If it is that which CSG sub-district is satisfied the measurement criterion that the base station is not sure of according to the Phy ID that reports, then whether belongs to CSG whitelist and confirm whether this UE can be linked into said CSG sub-district according to tracing area indications TA ID.
8. method as claimed in claim 7 is characterized in that, is that which CSG sub-district is satisfied the measurement criterion if the base station is not sure of according to the Phy ID that reports, and the TA ID of said CSG sub-district is removed to read through downlink signaling notice UE in then said base station.
9. method as claimed in claim 8 is characterized in that, said UE reads after the TA ID of CSG sub-district; If the TA ID that UE reads belongs to CSG whitelist, then this TA ID is reported the base station, base station judges belongs to CSG whitelist; Allow to insert, UE is switched to this CSG sub-district; If the TA ID that reads of UE does not belong to CSG whitelist, access failure then, UE reads end through up signaling base station TA ID.
10. the method for claim 1 is characterized in that, said AS whitelist is made up of the Phy ID of CSG sub-district.
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| JP5683474B2 (en) * | 2009-10-02 | 2015-03-11 | 三菱電機株式会社 | Mobile communication system |
| CN102056254A (en) * | 2009-10-30 | 2011-05-11 | 大唐移动通信设备有限公司 | Cell switching method and system |
| CN102056139B (en) * | 2009-10-30 | 2016-09-07 | 中兴通讯股份有限公司 | Reduce the method and apparatus of reporting information amount |
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| CN101959282A (en) * | 2010-09-26 | 2011-01-26 | 杭州华三通信技术有限公司 | Wireless local area network (WLAN) access control method and device thereof |
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