CN101772099A - Cell switching method and system, and access devices - Google Patents
Cell switching method and system, and access devices Download PDFInfo
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- CN101772099A CN101772099A CN200810247005A CN200810247005A CN101772099A CN 101772099 A CN101772099 A CN 101772099A CN 200810247005 A CN200810247005 A CN 200810247005A CN 200810247005 A CN200810247005 A CN 200810247005A CN 101772099 A CN101772099 A CN 101772099A
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Abstract
The embodiment of the invention relates to a cell switching method and a cell switching system and access devices. The cell switching method comprises the following steps: acquiring home base station information associated with the first access device; and sending first access device information and the home base station information to the second access device for the second access device to determine target cells in a home base station coverage range for user equipment according to the first access device information and the home base station information. The other cell switching method comprises the following steps: receiving first access device information from the first access device and home base station information associated with the first access device; and determining target cells in a home base station coverage range for user equipment according to the first access device information and the home base station information. The embodiment of the invention is favorable for saving idle resources and reducing time delay for switching the cells.
Description
Technical field
The embodiment of the invention relates to the communication technology, particularly relates to method and system and the access device that switch a kind of sub-district.
Background technology
(Home evolved NodeB is called for short HeNB to Home eNodeB; Or Home NodeB, be called for short HNB) generally be a kind of small base station equipment of buying and install voluntarily by the user, be connected to operator core network via IP network usually.The user can open or close Home eNodeB according to actual needs at any time.As seen, there are characteristics such as dynamically deployment, quantity is big, access randomness is strong in Home eNodeB.
Be different from Home eNodeB, macro base station (Macro eNB) is the base station equipment of being disposed through the network planning by operator.Have between the macro base station of neighbor cell and can have standard communication interface (as: X2 interface),, and carry out the sub-district via X2 interface and switch and data forwarding by the adjacent cell information between the commutative different macro base stations of X2 interface.The method that subscriber equipment (UE) carries out switching the sub-district between macro base station is: the sub-district that macrocell is adjacent with it with all is configured in the neighbor cell list of this macrocell as neighbor cell; When subscriber equipment and macrocell connect, just neighbor cell list is sent to subscriber equipment by measuring control messages, the indication subscriber equipment is measured neighbor cell; When subscriber equipment measures the sub-district that is fit to switching, report macrocell by measurement report; Macrocell is judged suitable Target cell according to the result of measurement report then, and the indication subscriber equipment switches to this Target cell.
The inventor finds in realizing embodiment of the invention process, the effective solution that prior art does not provide the minizone to switch at the Home eNodeB characteristics.Carry out the macrocell under the macro base station coverage if desired, switching between the home base station cells under family's base station range, prior art need subscriber equipment to read the broadcast message of a large amount of Home eNodeB, therefore, the waste interface-free resources strengthens time delay for switching.
Summary of the invention
Method and system and access device that the embodiment of the invention provides a kind of sub-district to switch are in order to save subscriber equipment from macrocell required interface-free resources when home base station cells switches, minimizing handover delay.
The method that the embodiment of the invention provides a kind of sub-district to switch comprises:
Obtain the femtocell information related with first access device;
Described first access device information and femtocell information are sent to second access device, are that subscriber equipment is determined the Target cell under the described Home eNodeB coverage for described second access device according to described first access device information and femtocell information.
The method that the embodiment of the invention also provides another kind of sub-district to switch comprises:
Reception is from first access device information of first access device and the femtocell information related with first access device;
According to described first access device information and femtocell information, for subscriber equipment is determined Target cell under the described Home eNodeB coverage.
The embodiment of the invention also provides a kind of access device, comprising:
The femtocell information acquisition module is used to obtain the femtocell information related with described access device;
Information sending module, being used for described access device information and femtocell information are sent to second access device, is that subscriber equipment is determined the Target cell under the described Home eNodeB coverage for described second access device according to described first access device information and femtocell information.
The embodiment of the invention also provides another kind of access device, comprising:
Receiver module is used to receive from first access device information of first access device and the femtocell information related with first access device;
The Target cell determination module is used for according to described first access device information and femtocell information, for subscriber equipment is determined Target cell under the described Home eNodeB coverage.
The system that the embodiment of the invention also provides a kind of sub-district to switch comprises first access device, second access device and Home eNodeB;
Described first access device is used to obtain and the related femtocell information of described first access device; Described first access device information and femtocell information are sent to described second access device;
Described second access device is used for according to described first access device information and the femtocell information related with first access device, for subscriber equipment is determined Target cell under the described Home eNodeB coverage.
In the method and system and access device that switch a kind of sub-district that the embodiment of the invention provides, first access device information and related femtocell information thereof are sent to second access device, by second access device according to first access device information and femtocell information, Target cell under the Home eNodeB coverage of determining to need to switch for subscriber equipment, avoided subscriber equipment when initiation is switched the sub-district under family's base station range from the sub-district under the second access device coverage, subscriber equipment need read and report the broadcast message of a large amount of Home eNodeB, thereby help saving interface-free resources, reduce the sub-district time delay for switching.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The method flow diagram that Fig. 1 switches for a kind of sub-district that first embodiment of the invention provides;
The method flow diagram that Fig. 2 switches for the another kind of sub-district that second embodiment of the invention provides;
The method embodiment application scenarios system configuration schematic diagram that Fig. 3 switches for sub-district of the present invention;
The method Signalling exchange figure that Fig. 4 switches for the sub-district that third embodiment of the invention provides;
A kind of access device structural representation that Fig. 5 provides for fourth embodiment of the invention;
The another kind of access device structural representation that Fig. 6 provides for fifth embodiment of the invention;
The system configuration schematic diagram that Fig. 7 switches for the sub-district that sixth embodiment of the invention provides.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.Below with reference to the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The method flow diagram that Fig. 1 switches for a kind of sub-district that first embodiment of the invention provides.As shown in Figure 1, present embodiment comprises:
Present embodiment first access device can be specially Home eNodeB is carried out the equipment that user's face and chain of command carry out cohesively managed, as: (Home evolved NodeB GateWay is called for short HeNBGW to femto gateway; Or Home NodeB Gateway, be called for short HNB GW) etc.First access device information can comprise: first access device sign (as: femto gateway sign (GW ID)), IP address (IP Address) etc.
Femtocell information related with first access device in the embodiment of the invention can comprise: set up the information of the Home eNodeB that communicates to connect with first access device.The femtocell information that present embodiment is related with first access device, can set up the mode that initiatively reports to first access device in the process to the first access device interface at Home eNodeB obtains, perhaps, the mode that reports first access device in the femtocell information update request by the Home eNodeB initiation is obtained, perhaps, Home eNodeB self is provided by other modes femtocell information to first access device.Wherein, femtocell information can comprise: Physical Cell Identifier (Physical Cell Identity, abbreviation PCI), cell ID (Cell Identity, abbreviation CI), tracking area code/sign (Tracking Area Code, abbreviation TAC), the closed subscriber group identity (CSG ID) of PLMN (Public Land Mobile Network is called for short PLMN) sign, carrier number, cell transmission bandwidths, frequency, support, positional information, Home eNodeB identifier, Home eNodeB pattern etc.; The Home eNodeB pattern can comprise open (Open) pattern, mixing (Hybrid) pattern or closure (Close) pattern.
Second access device in the present embodiment can be the base station equipment in the grand network, as: macro base station (MacroeNB), radio network controller (Radio Network Controller is called for short RNC) etc.
First access device information and femtocell information can send to second access device simultaneously, also can send to second access device respectively, for example: first access device can be after the information of having obtained Home eNodeB, and self information and the femtocell information that obtains are sent to second access device.Perhaps, first access device also can send to self information second access device earlier, and when first access device obtains the femtocell information related with self, the femtocell information that obtains is sent to second access device.
Second access device is according to first access device information and related femtocell information thereof, set up neighbor cell lists, according to neighbor cell lists is that subscriber equipment is determined measurement parameter, and Target cell that need to determine to switch for this subscriber equipment according to the measurement result of subscriber equipment, under the Home eNodeB coverage.
Present embodiment is by providing first access device information and related femtocell information thereof to second access device, make that second access device can be that subscriber equipment need to determine Target cell that switch, the Home eNodeB coverage according to the information of obtaining, avoided subscriber equipment when needs carry out switching to the sub-district of family's base station range from the sub-district of the second access device coverage, the broadcast message of a large amount of Home eNodeB that reads to the second access device report of user equipment, thereby help saving interface-free resources, reduce the sub-district time delay for switching.
On the basis of present embodiment technical scheme, can when satisfying default update condition, send described femtocell information to second access device.Default update condition can comprise the update strategy that Event triggered or cycle trigger.Adoptable Event triggered strategy is for example: when the femtocell information that obtains when first access device changes, send the femtocell information that upgrades to second access device, so that second access device carries out information updating.In order to reduce the number of times of information updating, conserve system resources, also adoptable cycle trigger policy, for example: at interval or in the Preset Time section, send femtocell information to second access device with Preset Time; If variation has taken place the femtocell information that second access device receives, second access device will adopt the femtocell information that obtains recently to carry out information updating.
The executive agent of present embodiment can be first access device, and first access device can be femto gateway on specific implementation.Because in the real network environment, Home eNodeB is reached the standard grade or rolled off the production line and has very strong randomness, Home eNodeB is reached the standard grade at every turn or is rolled off the production line and all can report current information to first access device related with self usually.If each Home eNodeB is when the first access device reporting information, first access device all needs the information of Home eNodeB is sent to second access device, so, the interaction message amount between first access device and second access device will be very large, need take more system resources.And the update strategy that present embodiment can trigger in the employing cycle, thereby can when satisfying the condition of update strategy setting, just report corresponding femtocell information to second access device, thus reduce the number of times of information updating, help conserve system resources.
The method flow diagram that Fig. 2 switches for the another kind of sub-district that second embodiment of the invention provides.As shown in Figure 2, present embodiment comprises:
Present embodiment first access device can be specially Home eNodeB is carried out the equipment that user's face and chain of command carry out cohesively managed, as: femto gateway etc.First access device information can comprise: first access device sign (as: femto gateway sign), IP address etc.
The femtocell information that present embodiment is related with first access device can comprise: the closed subscriber group identity of PCI, CI, TAC, PLMN sign, carrier number, cell transmission bandwidths, frequency, support (CSG ID), positional information, Home eNodeB identifier, Home eNodeB pattern etc.; The Home eNodeB pattern can comprise open (Open) pattern, mixing (Hybrid) pattern or closure (Close) pattern.
The present embodiment executive agent can be second access device.Second access device can be the base station equipment in the grand network, as: macro base station (Macro eNB), radio network controller (Radio NetworkController is called for short RNC) etc.
Present embodiment second access device is behind the femtocell information that has obtained first access device information and association thereof, can be with the sub-district (that is: home base station cells) of the Home eNodeB coverage related with adjacent first access device in sub-district (that is: macrocell) under the second access device coverage, be stored in the neighbor cell list as adjacent cell information, so that determine measurement parameter for subscriber equipment.
After the femtocell information that obtains first access device and association thereof, can set up the neighbor cell lists of the femtocell information that includes first access device information and association thereof, for subscriber equipment provides cell information under the described Home eNodeB coverage that this subscriber equipment need measure, according to the measurement result of user equipment to report, Target cell that determine to need switch for subscriber equipment, under the Home eNodeB coverage.After having determined Target cell, the Home eNodeB sign at Target Cell Identifier and Target cell place is carried in the handoff request message, and handoff request being routed to the Home eNodeB at Target cell place by first access device, Resources allocation is switched in this sub-district so that this Home eNodeB is subscriber equipment.
Present embodiment can be based on first access device information and the related femtocell information thereof that receive from first access device, Target cell under the Home eNodeB coverage of determining to need to switch for subscriber equipment, avoided subscriber equipment when initiation is switched the sub-district under family's base station range from the sub-district under the second access device coverage, subscriber equipment need read and report the broadcast message of a large amount of Home eNodeB, thereby help saving interface-free resources, reduce the sub-district time delay for switching.In addition, present embodiment is set up the neighbor cell lists of the femtocell information that includes first access device information and association thereof, be the cell information that subscriber equipment provides needs to measure according to neighbor cell lists, improved the specific aim that subscriber equipment is measured, thereby helped being the subscriber equipment power saving.
On the basis of present embodiment technical scheme, can indicate first access device when satisfying default update condition, send femtocell information.Default update condition can comprise the update strategy that Event triggered or cycle trigger.Adoptable Event triggered strategy is for example: when the femtocell information that obtains when first access device changes, send the femtocell information that upgrades to second access device, so that second access device carries out information updating.In order to reduce the number of times of information updating, conserve system resources, also adoptable cycle trigger policy, for example: at interval or in the Preset Time section, send femtocell information to second access device with Preset Time; If variation has taken place the femtocell information that second access device receives, second access device will adopt the femtocell information that obtains recently to carry out information updating.
The femtocell information of storing in femtocell information that second access device obtains and neighbor cell lists can adopt the femtocell information of nearest reception not simultaneously, upgrades in the neighbor cell lists femtocell information of storage in advance.
Because in the real network environment, Home eNodeB is reached the standard grade or rolled off the production line and has very strong randomness, Home eNodeB is reached the standard grade at every turn or is rolled off the production line and all can report current information to first access device related with self usually.If each Home eNodeB is when the first access device reporting information, first access device all needs the information of Home eNodeB is sent to second access device, so, the interaction message amount between first access device and second access device will be very large, need take more system resources.And the update strategy that present embodiment can trigger in the employing cycle, thereby can when satisfying the condition of update strategy setting, report corresponding femtocell information by ability needs first access device, thus reduce the number of times of information updating, help conserve system resources.
The method embodiment application scenarios system configuration schematic diagram that Fig. 3 switches for sub-district of the present invention.Femto gateway shown in Figure 3 is first access device in the embodiment of the invention, and macro base station is second access device in the embodiment of the invention.Macro base station or femto gateway and core net node are by Iu interface or S1 interface communication; Pass through Iuh interface or S1 interface communication between Home eNodeB and the femto gateway.Be positioned at sub-district under the macro base station coverage (hereinafter referred to as: subscriber equipment macrocell) can insert core net node by macro base station, thereby realizes set business.And be positioned at sub-district under the Home eNodeB coverage (hereinafter referred to as: subscriber equipment home base station cells) can pass through Home eNodeB, and inserts core net node via the femto gateway of this Home eNodeB association, thereby realizes set business; The Home eNodeB related with femto gateway is generally a plurality of.The core net node that can insert is for example: (the Serving GPRS Support Node of the service GPRS support node in the 3G communication network, be called for short SGSN), Long Term Evolution mobile communication system (Long Term Evolution, be called for short LTE) middle Mobility Management Entity (MobileManagement Entity, be called for short MME) or gateway (Serving Gateway is called for short S-GW) etc.
Introduce in the prior art that femto gateway inserts as Home eNodeB and the main cause of the management equipment of core net is: Home eNodeB generally is to be bought and a kind of small base station equipment of installation voluntarily by the user, layout quantity is a lot, and Home eNodeB inserts and has very big randomness, cause influence for fear of the frequent switch of Home eNodeB to core network, therefore between Home eNodeB and core net node, add femto gateway, a large amount of Home eNodeB are carried out the polymerization of chain of command and user's face by femto gateway.Introduce after the femto gateway, Home eNodeB registers or establishes a connection to earlier femto gateway earlier, afterwards, carry out the mutual of signaling and user data by femto gateway and core net node, thereby by femto gateway shielding because a large amount of Home eNodeB are disposed and arbitrarily the characteristic of switch the impact of core network is reduced the influence to core network.
Below in conjunction with Fig. 3, the realization principle of the embodiment of the invention is described.The inventor finds in the prior art, do not have communication interface between femto gateway and the macro base station in realizing embodiment of the invention process, do not have the storage femtocell information adjacent with macrocell in the neighbor cell list that macro base station is safeguarded; And, do not support the X2 standard communication interface between Home eNodeB and the macro base station at present because Home eNodeB is dynamically to dispose.Because in the coverage of a macro base station, the number of Home eNodeB may be very huge; And Home eNodeB is controlled by the owner, and the network service is nullified in switching on and shutting down registration that may be comparatively frequent.If the registration of each Home eNodeB or cancellation all will be upgraded to macro base station, then the renewal of the neighbor cell lists of macro base station or maintenance will be very hard works; If do not use neighbor cell lists, most of neighboring BS information that disposes in neighbor cell lists need report macro base station in measurement report, and this all is disadvantageous to interface-free resources utilization and minimizing handover delay.
Owing to introduced femto gateway Home eNodeB and core net node carried out the control of chain of command and data surface, and the relative Home eNodeB of femto gateway, negligible amounts and with the access relative fixed on opportunity of network.Therefore, can collect the information of Home eNodeB by femto gateway, communication interface (as: X interface) between base-station gateway and the macro base station founds a family, the cell information of the Home eNodeB collected is sent to adjacent macro base station, in neighbor cell lists, safeguard the information of the home base station cells adjacent by macro base station with macrocell.When subscriber equipment need carry out the sub-district switching, macro base station does not need the information of subscriber equipment at all adjacent home base station cells of measurement report report of user equipment current area, and can need metrical information for subscriber equipment provides by the neighbor cell list of safeguarding, be used to instruct subscriber equipment to measure according to metrical information, and then be that subscriber equipment is determined suitable target home base station cells according to measurement result, handoff request is sent to the Home eNodeB at Target cell place by femto gateway, thereby help saving interface-free resources, reduce the sub-district time delay for switching, and improved the specific aim that subscriber equipment is measured, help being the subscriber equipment power saving.
The method Signalling exchange figure that Fig. 4 switches for the sub-district that third embodiment of the invention provides.Present embodiment is to be example with application scenarios shown in Figure 3, and cell switching method technical scheme of the present invention is described.As shown in Figure 3 and Figure 4, present embodiment comprises:
Step 41, Home eNodeB report self attributes information (that is: the femtocell information of the embodiment of the invention) to femto gateway.
Home eNodeB can be when femto gateway be set up Iuh interface or S1 interface and is connected, report the attribute information of oneself to femto gateway, under this situation, femtocell information is carried in S1 connection request (S1 Setup Request) message or registering family base station request (the HNB Registration Request) message, reports femto gateway.
Home eNodeB also can be when self information changes, report the attribute information of self to femto gateway, under this situation, femtocell information is carried in the Home eNodeB update inquiry information (eNBConfiguration Update), reports femto gateway.
In addition, Home eNodeB also is carried at self attributes information in the proprietary message and reports femto gateway.The femtocell information of the femto gateway that reports can comprise: the closed subscriber group identity of PCI, CI, TAC, PLMN sign, carrier number, cell transmission bandwidths, frequency, support (CSG ID), positional information, Home eNodeB identifier, Home eNodeB pattern etc.These femtocell informations are carried in and report femto gateway in a piece of news, also can disperse to be carried to report femto gateway in the multiple messages.
Step 43, femto gateway send response message to Home eNodeB.
When femto gateway receives the femtocell information that Home eNodeB reports, send response to Home eNodeB.
Step 45, femto gateway send to macro base station with self attributes information (that is: the femto gateway information of the embodiment of the invention) and the femtocell information that obtains.
Femto gateway sign (GW ID)), IP address (IP Address) etc. femto gateway can comprise to the femto gateway information that macro base station sends:.
Femto gateway can comprise to the femtocell information that macro base station sends: the closed subscriber group identity of PCI, CI, TAC, PLMN sign, carrier number, cell transmission bandwidths, frequency, Home eNodeB type, support (CSG ID), positional information, Home eNodeB sign, Home eNodeB pattern etc.
Step 41 and step 43 are not to set up the necessary condition (step 41 and step 43 adopt dotted line to represent in Fig. 4) that interface connects between femto gateway and the macro base station, when femto gateway does not obtain femtocell information, also can set up interface with macro base station earlier is connected, the femtocell information that reports femto gateway to obtain again afterwards, that is: the interface of femto gateway and macro base station is connected the process of foundation, can obtain the femtocell information process related with femto gateway, not be subjected to the restriction of sequential relationship with self.
Femto gateway can initiatively send self attributes information and the femtocell information related with self to macro base station.Under this situation, step 45 can comprise step 451a-455a.
Step 451a, femto gateway send the X interface to macro base station and set up request message, set up at the X interface and to carry femto gateway information in the request message, perhaps, set up the femtocell information that carries femto gateway information and association thereof in the request message at the X interface.
If when femto gateway and macro base station were set up the X interface and be connected, when also not having on the femto gateway to obtain the femtocell information related with this femto gateway, femto gateway can report macro base station earlier with the information of self; And after femto gateway has obtained femtocell information, again femtocell information is sent to macro base station.
When if femto gateway and macro base station are set up the X interface and are connected, obtained the femtocell information related on the femto gateway with this femto gateway, femto gateway can be carried at information and the femtocell information of self the X interface and set up in the request message so, report macro base station, perhaps, femto gateway can send femtocell information to macro base station after having set up the X interface with macro base station.
Step 453a, macro base station send X interface response message to femto gateway.In X interface response message, go back the default update condition of portability.
Default update condition can comprise the update strategy that Event triggered or cycle trigger, so that femto gateway when satisfying update condition, reports the information of the Home eNodeB of renewal.Adoptable Event triggered strategy is for example: when the femtocell information that obtains when family's base-station gateway changes, send the femtocell information that upgrades to macro base station, so that macro base station carries out information updating.Be the number of times of the interacting message between minimizing macro base station and the Home eNodeB, adoptable cycle trigger policy, for example:, send femtocell information to macro base station with the Preset Time interval or in the Preset Time section; If variation has taken place the femtocell information that macro base station receives, macro base station will adopt the femtocell information that obtains recently to carry out information updating.
Step 455a, femto gateway send femtocell information to macro base station when satisfying default update condition.
When satisfying default update condition, femto gateway can send the femtocell information that upgrades to macro base station, if when femto gateway has obtained newly-increased femtocell information, also newly-increased femtocell information can be sent to macro base station.
In addition, macro base station also can be initiatively to femto gateway acquisition request femto gateway information and related femtocell information thereof.Under this situation, step 45 can comprise step 451b-455b.
Step 451b, macro base station send the X interface to femto gateway and set up request message.Set up at the X interface and to go back the default update condition of portability in the request message.
Step 453b, femto gateway send X interface response message to the macro base station gateway when satisfying default update condition.Portability femto gateway information in X interface response message perhaps, is gone back portability femto gateway information and the femtocell information related with femto gateway in X interface response message.
Step 455b, set up after the X interface is connected at femto gateway and macro base station, femto gateway also can send femtocell information to macro base station when satisfying default update condition.
Under this situation, the femtocell information that femto gateway can send upgrade to macro base station when if femto gateway has obtained newly-increased femtocell information, also can send to macro base station with newly-increased femtocell information.
Step 47, macro base station are according to the femto gateway information and the femtocell information that obtain, set up neighbor cell lists, in this neighbor cell lists, include the information of the home base station cells adjacent with macrocell, and the information of the femto gateway of the Home eNodeB association at home base station cells place.
When macro base station receives femtocell information from the renewal of femto gateway, adopt the femtocell information that upgrades to upgrade the femtocell information of storing in the neighbor cell lists.
When on macro base station, safeguarding the neighbor cell lists that the femtocell information that comprises femto gateway information and association thereof is arranged, can realize the sub-district switching of subscriber equipment by step 49-433 based on this neighbor cell lists.
The neighbor cell lists that step 49, macro base station are safeguarded according to macro base station sends to subscriber equipment measures Control Parameter.
Carry in this measurement Control Parameter store in the neighbor cell lists with the adjacent home base station cells information of the current place of subscriber equipment macrocell.Measuring Control Parameter can comprise: adjacent sub-district PCI, frequency, cell transmission bandwidths etc., if adjacent sub-district is a home base station cells, measure the closed subscriber group identity information such as (CSG ID) that Control Parameter can comprise that also Home eNodeB is supported.The measurement Control Parameter is carried in the RRC reconfiguration message and sends to subscriber equipment.
Step 411, subscriber equipment carry out power measurement according to the measurement Control Parameter that macro base station sends, and send the measurement report that comprises measurement result to macro base station.
Can comprise in the measurement report that home base station cells that subscriber equipment provides macro base station carries out the parameter of power measurement.
Step 413, macro base station are the Target cell that subscriber equipment need to determine switching according to measurement report, send first handoff request to core net node.
Macro base station can measurement report with user equipment to report in a plurality of home base station cells, the Target cell that the home base station cells that power is the strongest need switch as subscriber equipment.After determining good Target cell, macro base station can obtain the femtocell information at Target cell place and the femto gateway information of this Home eNodeB association by the inquiry neighbor cell lists.Afterwards, macro base station sends first handoff request to core net node, is used to the information of asking core net node to carry according to this request, carries out access control.
Portability has user ID, Target Cell Identifier and Home eNodeB sign in first handoff request, goes back the Home eNodeB pattern that portability has the CSG ID and the Target cell place Home eNodeB of Target cell; Wherein, the Home eNodeB pattern comprises: open (Open) pattern, mixing (Hybrid) pattern or closure (Close) pattern.
Step 415, core net node carry out access control according to the CSG ID of Target cell and/or the front yard base station mode of Target cell place Home eNodeB; If the information of carrying in first handoff request is by access control, execution in step 419 so; Otherwise, execution in step 417.
Core network entity can carry out access control to subscriber equipment according to the information of carrying in first handoff request, concrete access control flow process for example:
If when carrying the CSG ID of Target cell in first handoff request, core net is carried out access control according to the CSG ID of Target cell: the CSG ID tabulation that core net node is supported according to the Home eNodeB that obtains, judge the CSG ID of the Target cell that carries in first handoff request, whether in the CSG ID tabulation that Home eNodeB is supported; If this subscriber equipment is the signatory user of Home eNodeB, core net node allows the access of subscriber equipment; If not, this subscriber equipment is not the signatory user of Home eNodeB, core net node does not allow the access of subscriber equipment.
Perhaps, if when carrying the CSG ID of Target cell and Home eNodeB pattern information in first handoff request, core net node can carry out access control to subscriber equipment according to the CSG ID and the Home eNodeB pattern of Target cell, specifically can comprise:
If the Home eNodeB pattern of Target cell place Home eNodeB is open (Open) pattern, represent that so Any user equipment all can insert this Home eNodeB, core net node does not then need subscriber equipment is carried out access control, gives tacit consent to the validated user that this subscriber equipment is a Home eNodeB;
If the Home eNodeB pattern of Target cell place Home eNodeB is for mixing (Hybrid) pattern, then preferentially satisfy closed user group user's business demand, under the prerequisite that guarantees closed user group customer service demand, allow the user of non-closed user group to insert, at this moment, core net node can carry out access control to subscriber equipment according to the CSG id information in first handoff request;
If the Home eNodeB pattern of Target cell place Home eNodeB is closed (Close) pattern, represent that so only the user of closed user group allows to insert this Home eNodeB, at this moment, core net node is according to the CSG ID in first handoff request, judge that whether subscriber equipment is the user in the closed user group supported of Home eNodeB, if, by access control, otherwise judge that subscriber equipment is the user in the non-closed user group of Home eNodeB, at this moment, core net node does not allow the access of subscriber equipment.
If step 417 core net node does not have the access control by first handoff request, then send refusal handoff request message to macro base station.Macro base station switches this sub-district that refusing user's equipment carries out after receiving this message; Process ends.
This first handoff request of the corresponding femto gateway route of the femto gateway identification information that step 419, core net node carry in first handoff request; Carry the Home eNodeB sign at Target Cell Identifier and this Target cell place in first handoff request.
Step 421, femto gateway are when receiving first handoff request, and the Home eNodeB that carries in first handoff request identifies corresponding Home eNodeB and sends second handoff request; Carry Target Cell Identifier in second handoff request.
Step 423, the Home eNodeB that receives second handoff request are that Radio Resource is prepared in this switching to Target cell of subscriber equipment.
Step 425, be that switch when being ready to Radio Resource this sub-district of subscriber equipment at Home eNodeB, Home eNodeB is replied handoff request acknowledgment message to femto gateway.
Step 427, femto gateway are replied handoff request acknowledgment message to core network entity.
Step 429, core network entity send handoff request acknowledgment message to macro base station when receiving the handoff request acknowledgment message of Home eNodeB.
Step 431, macro base station send the sub-district switching command to subscriber equipment.
Step 433, subscriber equipment switch to home base station cells (that is: Target cell) according to the sub-district switching command from macrocell.
On the basis of technique scheme, macro base station also can be according to the femtocell information that obtains, sub-district under the Home eNodeB institute coverage of determining to allow to insert for subscriber equipment, Target cell as the subscriber equipment switching, promptly on macro base station, realize access control to subscriber equipment, and after subscriber equipment is by access control, first handoff request is directly sent to femto gateway, by femto gateway notice Home eNodeB this sub-district switching preparation resource of subscriber equipment.Perhaps, on the basis of technique scheme, also can be by femto gateway according to the femtocell information that obtains, realization is to the access control of subscriber equipment, and after subscriber equipment is by access control, second handoff request is sent to Home eNodeB, is this sub-district switching preparation resource of subscriber equipment in order to the notice Home eNodeB.
Present embodiment is set up interface between femto gateway and macro base station, the femtocell information that femto gateway is collected sends to macro base station, by macro base station according to femto gateway information and femtocell information, set up and the maintenance of neighbor cell list, make when subscriber equipment is initiated the sub-district switching, macro base station can provide the metrical information of the sub-district under the Home eNodeB coverage according to this neighbor cell lists for subscriber equipment, determine the Target cell of switching according to the measurement result of subscriber equipment, afterwards handoff request is routed to the Home eNodeB at Target cell place by first access device, avoided subscriber equipment when initiation is switched to family's base station cell from macrocell, subscriber equipment need read and report the broadcast message of a large amount of Home eNodeB, thereby help saving interface-free resources, reduce the sub-district time delay for switching, improve the specific aim of subscriber equipment cell measurement simultaneously, help being the subscriber equipment power saving.
A kind of access device structural representation that Fig. 5 provides for fourth embodiment of the invention.As shown in Figure 5, the present embodiment access device comprises: femtocell information acquisition module 51 and information sending module 52.
Femtocell information acquisition module 51 is used to obtain the femtocell information related with described access device.
On the basis of technique scheme, present embodiment access device information sending module 52 can comprise: lastest imformation sending module 53.
Lastest imformation sending module 53 is used for sending described femtocell information to second access device when satisfying default update condition.
Further, lastest imformation sending module 53 can comprise the first lastest imformation transmitting element 531 and the second lastest imformation transmitting element 532.
The first lastest imformation transmitting element 531 is used for when the femtocell information that described first access device obtains changes, and sends the femtocell information that upgrades to described second access device.
The second lastest imformation transmitting element 532 is used for sending described femtocell information with the Preset Time interval or in the Preset Time section to described second access device.
On specific implementation, the present embodiment access device can be specially Home eNodeB is carried out the equipment that user's face and chain of command carry out cohesively managed, as: femto gateway etc.
Present embodiment is by providing this access device information and related femtocell information thereof to second access device, make that second access device can be that subscriber equipment need to determine the Target cell of switching and the Home eNodeB at Target cell place according to the information of obtaining, afterwards handoff request is routed to the Home eNodeB at Target cell place by first access device, avoided subscriber equipment when initiation is switched to the sub-district of family's base station range from the sub-district of the second access device coverage, the broadcast message of a large amount of Home eNodeB that reads to the second access device report of user equipment, thereby help saving interface-free resources, reduce the sub-district time delay for switching.Further, the update strategy that the present embodiment employing cycle triggers, thereby can when satisfying the condition of update strategy setting, just report corresponding femtocell information to second access device, thus reduce the number of times of information updating, help conserve system resources.
The another kind of access device structural representation that Fig. 6 provides for fifth embodiment of the invention.As shown in Figure 6, the present embodiment access device comprises: receiver module 61 and Target cell determination module 62.
Receiver module 61 is used to receive from first access device information of first access device and the femtocell information related with first access device.
Target cell determination module 62 is used for according to described first access device information and femtocell information, Target cell that determine to need switch for subscriber equipment, under the described Home eNodeB coverage.
On the basis of technique scheme, Target cell determination module 62 can comprise: neighbor cell lists is set up unit 621, metrical information transmitting element 622 and Target cell determining unit 623.
Neighbor cell lists is set up unit 621 and is used for setting up neighbor cell lists according to described first access device information and the femtocell information related with first access device.
Metrical information transmitting element 622 is used for according to described neighbor cell lists, and the cell information under the described Home eNodeB coverage that needs to measure is provided for subscriber equipment.
Target cell determining unit 623 is used for the measurement result according to described subscriber equipment, Target cell that determine to need switch for subscriber equipment, under the described Home eNodeB coverage.
On the basis of technique scheme, the present embodiment access device also can comprise: upgrade indicating module 63.
Upgrade indicating module 63 and be used to indicate described first access device when satisfying default update condition, send described femtocell information.
On the basis of technique scheme, the present embodiment access device also can comprise: neighbor cell lists information updating module 64.
Neighbor cell lists information updating module 64 is used for carrying out the information updating of described neighbor cell lists when obtaining the femtocell information of renewal.
Present embodiment is on specific implementation, and the present embodiment access device can be: macro base station, radio network controller etc.
Present embodiment comprises the neighbor cell lists of the femtocell information of first access device and association thereof by foundation, make when subscriber equipment is initiated the sub-district switching, can provide metrical information for subscriber equipment according to this neighbor cell lists, and determine Target cell under the Home eNodeB coverage that subscriber equipment need switch according to the measurement result of subscriber equipment, afterwards handoff request is routed to the Home eNodeB at Target cell place by first access device, avoided subscriber equipment when initiation is switched to family's base station cell from macrocell, subscriber equipment need read and report the broadcast message of a large amount of Home eNodeB, thereby help saving interface-free resources, reduce the sub-district time delay for switching, help simultaneously improving the specific aim that subscriber equipment is measured, be the subscriber equipment power saving.Further, the update strategy that the present embodiment employing cycle triggers, thereby can when satisfying the condition of update strategy setting, report corresponding femtocell information by ability needs first access device, thus reduce the number of times of information updating, help conserve system resources.
The system configuration schematic diagram that Fig. 7 switches for the sub-district that sixth embodiment of the invention provides.As shown in Figure 7, the system of present embodiment sub-district switching comprises: first access device 71, second access device 72 and Home eNodeB 73.
On specific implementation, present embodiment first access device can be specially Home eNodeB is carried out the equipment that user's face and chain of command carry out cohesively managed, as: femto gateway etc.Present embodiment second access device can be: macro base station, radio network controller etc.About first access device and the further refined structure of second access device, can repeat no more referring to the record of Fig. 5 and the corresponding embodiment of Fig. 6.
Present embodiment is set up interface between first access device (as femto gateway) and second access device (as: macro base station), the femtocell information that first access device is collected sends to second access device, by second access device according to first access device information and femtocell information, determine the Target cell under the Home eNodeB coverage that subscriber equipment switches, afterwards handoff request is routed to the Home eNodeB at Target cell place by first access device, avoided subscriber equipment when initiation is switched to family's base station cell from macrocell, subscriber equipment need read and report the broadcast message of a large amount of Home eNodeB, thereby help saving interface-free resources, reduce the sub-district time delay for switching.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of a preferred embodiment, and module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
One of ordinary skill in the art will appreciate that: the module in the device among the embodiment can be described according to embodiment and be distributed in the device of embodiment, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of embodiment of the invention technical scheme.
Claims (15)
1. the method that switch the sub-district is characterized in that, comprising:
Obtain the femtocell information related with first access device;
Described first access device information and femtocell information are sent to second access device, are that subscriber equipment is determined the Target cell under the described Home eNodeB coverage for described second access device according to described first access device information and femtocell information.
2. the method that switch sub-district according to claim 1 is characterized in that, also comprises:
When satisfying default update condition, send described femtocell information to described second access device.
3. the method that switch sub-district according to claim 2 is characterized in that, describedly sends described femtocell information to described second access device when satisfying default update condition, comprising:
When the femtocell information that obtains at described first access device changes, send the femtocell information that upgrades to described second access device; Perhaps
With the Preset Time interval or in the Preset Time section, send described femtocell information to described second access device.
4. the method that switch the sub-district is characterized in that, comprising:
Reception is from first access device information of first access device and the femtocell information related with first access device;
According to described first access device information and femtocell information, for subscriber equipment is determined Target cell under the described Home eNodeB coverage.
5. the method that switch sub-district according to claim 4 is characterized in that, according to described first access device information and femtocell information, for subscriber equipment is determined to comprise Target cell under the described Home eNodeB coverage:
According to described first access device information and the femtocell information related, set up neighbor cell lists with first access device;
According to described neighbor cell lists, provide the cell information under the described Home eNodeB coverage of need measuring for subscriber equipment;
According to the measurement result of described subscriber equipment, for subscriber equipment is determined Target cell under the described Home eNodeB coverage.
6. the method that switch sub-district according to claim 5 is characterized in that, also comprises:
Indicate described first access device when satisfying default update condition, send described femtocell information.
7. according to the method for claim 5 or 6 described sub-districts switchings, it is characterized in that, also comprise:
When obtaining the femtocell information of renewal, carry out the information updating of described neighbor cell lists.
8. an access device is characterized in that, comprising:
The femtocell information acquisition module is used to obtain the femtocell information related with described access device;
Information sending module, being used for described access device information and femtocell information are sent to second access device, is that subscriber equipment is determined the Target cell under the described Home eNodeB coverage for described second access device according to described first access device information and femtocell information.
9. access device according to claim 8 is characterized in that, described information sending module comprises:
The lastest imformation sending module is used for sending described femtocell information to second access device when satisfying default update condition.
10. access device according to claim 9 is characterized in that, described lastest imformation sending module comprises:
The first lastest imformation transmitting element is used for when the described femtocell information that obtains changes, and sends the femtocell information that upgrades to described second access device;
The second lastest imformation transmitting element is used for sending described femtocell information with the Preset Time interval or in the Preset Time section to described second access device.
11. an access device is characterized in that, comprising:
Receiver module is used to receive from first access device information of first access device and the femtocell information related with first access device;
The Target cell determination module is used for according to described first access device information and femtocell information, for subscriber equipment is determined Target cell under the described Home eNodeB coverage.
12. access device according to claim 11 is characterized in that, described Target cell determination module comprises:
Neighbor cell lists is set up the unit, is used for setting up neighbor cell lists according to described first access device information and the femtocell information related with first access device;
The metrical information transmitting element is used for according to described neighbor cell lists, and the cell information under the described Home eNodeB coverage that needs to measure is provided for subscriber equipment;
The Target cell determining unit is used for the measurement result according to described subscriber equipment, for subscriber equipment is determined Target cell under the described Home eNodeB coverage.
13. access device according to claim 12 is characterized in that, also comprises:
Upgrade indicating module, be used to indicate described first access device when satisfying default update condition, send described femtocell information.
14. according to claim 12 or 13 described access devices, it is characterized in that, also comprise:
The neighbor cell lists information updating module is used for carrying out the information updating of described neighbor cell lists when obtaining the femtocell information of renewal.
15. the system that switch the sub-district is characterized in that, comprises first access device, second access device and Home eNodeB;
Described first access device is used to obtain and the related femtocell information of described first access device; Described first access device information and femtocell information are sent to described second access device;
Described second access device is used for according to described first access device information and the femtocell information related with first access device, for subscriber equipment is determined Target cell under the described Home eNodeB coverage.
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