CN101772099B - Cell switching method and system, and access devices - Google Patents
Cell switching method and system, and access devices Download PDFInfo
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- CN101772099B CN101772099B CN200810247005.9A CN200810247005A CN101772099B CN 101772099 B CN101772099 B CN 101772099B CN 200810247005 A CN200810247005 A CN 200810247005A CN 101772099 B CN101772099 B CN 101772099B
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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 present invention relates to the communication technology, particularly relates to method and system and the access device that switch a kind of community.
Background technology
(Home evolved NodeB, is called for short HeNB to Home eNodeB; Or Home NodeB, be called for short HNB) be generally a kind of small base station equipment of buying and install voluntarily by user, conventionally via IP network, be connected to operator core network.User can according to actual needs, open or close Home eNodeB at any time.Visible, there is the features such as Dynamical Deployment, quantity is large, access randomness is strong in Home eNodeB.
Be different from Home eNodeB, the base station equipment that macro base station (Macro eNB) Shi You operator disposes through the network planning.Have between the macro base station of neighbor cell and can have standard communication interface (as: X2 interface), by the adjacent cell information between the commutative different macro base stations of X2 interface, and carry out community switching and data retransmission via X2 interface.The method that subscriber equipment (UE) carries out switching macro base station Jian community is: macrocell is configured in all adjacent communities with it in the neighbor cell lists of this macrocell as neighbor cell; When subscriber equipment and macrocell connect, just neighbor cell lists is sent to subscriber equipment by measuring control message, equipment for indicating user is measured neighbor cell; When subscriber equipment measures the community that is applicable to switching, by measurement report, report macrocell; Then macrocell judges suitable Target cell according to the result of measurement report, and equipment for indicating user is switched to this Target cell.
Inventor finds in realizing embodiment of the present invention process, the effective solution that prior art does not provide minizone to switch for Home eNodeB feature.If need to carry out the macrocell under macro base station coverage, to the switching between the home base station cells under family's base station range, prior art needs subscriber equipment to read the broadcast message of a large amount of Home eNodeB, therefore, waste interface-free resources, strengthens the time delay of switching.
Summary of the invention
Method and system and access device that the embodiment of the present invention provides a kind of community to switch, required interface-free resources while switching from macrocell to home base station cells in order to save subscriber equipment, minimizing handover delay.
A kind of method that the embodiment of the present invention provides community to switch, comprising:
Obtain the femtocell information associated with the first access device;
Described the first access device information and femtocell information are sent to the second access device, are that subscriber equipment is determined the Target cell under described Home eNodeB coverage for described the second access device according to described the first access device information and femtocell information.
The method that the embodiment of the present invention also provides another kind of community to switch, comprising:
Reception is from the first access device information of the first access device and the femtocell information associated with the first access device;
According to described the first access device information and femtocell information, for subscriber equipment is determined the Target cell under described Home eNodeB coverage.
The embodiment of the present invention also provides a kind of access device, comprising:
Femtocell information acquisition module, for obtaining the femtocell information associated with described access device;
Information sending module, for described access device information and femtocell information are sent to the second access device, for described the second access device, according to described the first access device information and femtocell information, be that subscriber equipment is determined the Target cell under described Home eNodeB coverage.
The embodiment of the present invention also provides another kind of access device, comprising:
Receiver module, for receiving from the first access device information of the first access device and the femtocell information associated with the first access device;
Target cell determination module, for according to described the first access device information and femtocell information, for subscriber equipment is determined the Target cell under described Home eNodeB coverage.
The system that the embodiment of the present invention also provides a kind of community to switch, comprises the first access device, the second access device and Home eNodeB;
Described the first access device is for obtaining the femtocell information associated with described the first access device; Described the first access device information and femtocell information are sent to described the second access device;
Described the second access device is used for according to described the first access device information and the femtocell information associated with the first access device, for subscriber equipment is determined the Target cell under described Home eNodeB coverage.
In the method and system and access device that switch a kind of community that the embodiment of the present invention provides, the first access device information and associated femtocell information thereof are sent to the second access device, by the second access device according to the first access device information and femtocell information, for subscriber equipment is determined the Target cell under the Home eNodeB coverage that needs to switch, while having avoided subscriber equipment to switch community under initiating from the second access device coverage Xia community to family's base station range, subscriber equipment need read and report the broadcast message of a large amount of Home eNodeB, thereby be conducive to save interface-free resources, reduce the time delay that switch community.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The method flow diagram that Fig. 1 switches for a kind of community that first embodiment of the invention provides;
The method flow diagram that Fig. 2 switches for the another kind of community that second embodiment of the invention provides;
Fig. 3 is the embodiment of the method application scenarios system configuration schematic diagram that switch community of the present invention;
The method Signalling exchange figure that Fig. 4 switches for the community 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 community 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 present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The method flow diagram that Fig. 1 switches for a kind of community that first embodiment of the invention provides.As shown in Figure 1, the present embodiment comprises:
The present embodiment the first access device can be specially Home eNodeB is carried out to the equipment that user's face and chain of command carry out cohesively managed, as: (Home evolved NodeB GateWay, is called for short HeNB GW to femto gateway; Or Home NodeB Gateway, be called for short HNB GW) etc.The first access device information can comprise: the first access device sign (as: femto gateway sign (GW ID)), IP address (IP Address) etc.
Femtocell information associated with the first access device in the embodiment of the present invention can comprise: set up the information of the Home eNodeB of communication connection with the first access device.The femtocell information that the present embodiment is associated with the first access device, can to the mode initiatively reporting to the first access device in the first access device interface process of establishing, obtain at Home eNodeB, or, the mode that reports the first access device in the femtocell information update request of initiating by Home eNodeB is obtained, or Home eNodeB provides the femtocell information of self to the first access device by other means.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.; Home eNodeB pattern can comprise open (Open) pattern, mixing (Hybrid) pattern or closure (Close) pattern.
The second access device in the present embodiment can be the base station equipment in grand network, as: macro base station (Macro eNB), radio network controller (Radio Network Controller is called for short RNC) etc.
The first access device information and femtocell information can send to the second access device simultaneously, also can to the second access device, send respectively, for example: the first access device can be after having obtained the information of Home eNodeB, self information and the femtocell information that obtains are sent to the second access device.Or the first access device also can first send to self information the second access device, and when the first access device obtains the femtocell information associated with self, the femtocell information of acquisition is sent to the second access device.
The second access device is according to the first access device information and associated femtocell information thereof, set up neighbor cell lists, according to neighbor cell lists, be that subscriber equipment is determined measurement parameter, and be that according to the measurement result of subscriber equipment this subscriber equipment determines Target cell that need to switch, under Home eNodeB coverage.
The present embodiment is by providing the first access device information and associated femtocell information thereof to the second access device, making the second access device can be that subscriber equipment is determined need Target cell that switch, Home eNodeB coverage according to the information of obtaining, avoided subscriber equipment to carry out from the community of the second access device coverage when switching the community of family's base station range at needs, the broadcast message of a large amount of Home eNodeB reading to the second access device report of user equipment, thereby be conducive to save interface-free resources, reduce the time delay that switch community.
On the basis of the present embodiment technical scheme, can, when meeting default update condition, to the second access device, send described 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 obtaining when the first access device changes, send the femtocell information upgrading, so that the second access device carries out information updating to the second access device.In order to reduce the number of times of information updating, save system resource, adoptable cycle trigger policy also, for example: with Preset Time interval or in Preset Time section, to the second access device transmission femtocell information; If variation has occurred the femtocell information that the second access device receives, the second access device will adopt the femtocell information obtaining recently to carry out information updating.
The executive agent of the present embodiment can be the first access device, and the first access device can be femto gateway in specific implementation.Due in real network environment, Home eNodeB is reached the standard grade or is rolled off the production line and has very strong randomness, and Home eNodeB is reached the standard grade at every turn or rolled off the production line and conventionally all can report current information to first access device associated with self.If when Home eNodeB is to the first access device reporting information at every turn, the first access device all needs the information of Home eNodeB to send to the second access device, so, the interaction message amount between the first access device and the second access device will be very large, need to take more system resource.And the update strategy that the present embodiment can trigger in the employing cycle, thereby can when meeting the condition of update strategy setting, just to the second access device, report corresponding femtocell information, thus reduce the number of times of information updating, be conducive to save system resource.
The method flow diagram that Fig. 2 switches for the another kind of community that second embodiment of the invention provides.As shown in Figure 2, the present embodiment comprises:
The present embodiment the first access device can be specially Home eNodeB is carried out to the equipment that user's face and chain of command carry out cohesively managed, as: femto gateway etc.The first access device information can comprise: the first access device sign (as: femto gateway sign), IP address etc.
The femtocell information that the present embodiment is associated with the 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.; Home eNodeB pattern can comprise open (Open) pattern, mixing (Hybrid) pattern or closure (Close) pattern.
The present embodiment executive agent can be the second access device.The second access device can be the base station equipment in grand network, as: macro base station (Macro eNB), radio network controller (Radio Network Controller is called for short RNC) etc.
The present embodiment the second access device is after having obtained the femtocell information of the first access device information and association thereof, can be by the community (that is: home base station cells) of the associated Home eNodeB coverage of first access device adjacent with the second access device coverage Xia community (that is: macrocell), as adjacent cell information, be stored in neighbor cell lists, to determine measurement parameter for subscriber equipment.
After obtaining the femtocell information of the first access device and association thereof, can set up the neighbor cell lists of the femtocell information that includes the first access device information and association thereof, for subscriber equipment provides the cell information under the described Home eNodeB coverage that this subscriber equipment need to measure, according to the measurement result of user equipment to report, Target cell that determine to need switch for subscriber equipment, under Home eNodeB coverage.After having determined Target cell, the Home eNodeB sign at Target Cell Identifier and place, Target cell is carried in handover request message, and by the first access device, handover request is routed to the Home eNodeB at place, Target cell, so that this Home eNodeB is subscriber equipment, Resources allocation is switched in this community.
The present embodiment can be based on receiving from the first access device information of the first access device and the femtocell information of association thereof, for subscriber equipment is determined the Target cell under the Home eNodeB coverage that needs to switch, while having avoided subscriber equipment to switch community under initiating from the second access device coverage Xia community to family's base station range, subscriber equipment need read and report the broadcast message of a large amount of Home eNodeB, thereby be conducive to save interface-free resources, reduce the time delay that switch community.In addition, the present embodiment is set up the neighbor cell lists of the femtocell information that includes the first access device information and association thereof, according to neighbor cell lists, for subscriber equipment provides the cell information that needs measurement, improved the specific aim that subscriber equipment is measured, thereby be conducive to for subscriber equipment power saving.
On the basis of the present embodiment technical scheme, can indicate the first access device when meeting 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 obtaining when the first access device changes, send the femtocell information upgrading, so that the second access device carries out information updating to the second access device.In order to reduce the number of times of information updating, save system resource, adoptable cycle trigger policy also, for example: with Preset Time interval or in Preset Time section, to the second access device transmission femtocell information; If variation has occurred the femtocell information that the second access device receives, the second access device will adopt the femtocell information obtaining recently to carry out information updating.
When the femtocell information obtaining at the second access device is different from the femtocell information of storing in neighbor cell lists, can adopt the femtocell information of nearest reception, upgrade pre-stored femtocell information in neighbor cell lists.
Due in real network environment, Home eNodeB is reached the standard grade or is rolled off the production line and has very strong randomness, and Home eNodeB is reached the standard grade at every turn or rolled off the production line and conventionally all can report current information to first access device associated with self.If when Home eNodeB is to the first access device reporting information at every turn, the first access device all needs the information of Home eNodeB to send to the second access device, so, the interaction message amount between the first access device and the second access device will be very large, need to take more system resource.And the update strategy that the present embodiment can the employing cycle triggers, thereby can be when meeting the condition that update strategy sets just needs the first access device report corresponding femtocell information, thereby reduce the number of times of information updating, be conducive to save system resource.
Fig. 3 is the embodiment of the method application scenarios system configuration schematic diagram that switch community of the present invention.Femto gateway shown in Fig. 3 is the first access device in the embodiment of the present invention, and macro base station is the second access device in the embodiment of the present invention.Macro base station or femto gateway and core net node are by Iu interface or S1 interface communication; Between Home eNodeB and femto gateway, pass through Iuh interface or S1 interface communication.Be positioned at macro base station coverage Xia community (hereinafter referred to as: subscriber equipment macrocell) can pass through macro base station core network access node, thereby realizes set business.And be positioned at Home eNodeB coverage Xia community (hereinafter referred to as: subscriber equipment home base station cells) can pass through Home eNodeB, and via the femto gateway core network access node of this Home eNodeB association, thereby realizes set business; The Home eNodeB associated with femto gateway is generally a plurality of.Accessible core net node is for example: (the Serving GPRS Support Node of the service GPRS support node in 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 (Mobile Management Entity, be called for short MME) or gateway (Serving Gateway is called for short S-GW) etc.
Introducing in the prior art femto gateway is as the main cause of the management equipment of Home eNodeB access and core net: Home eNodeB is generally to be bought and a kind of small base station equipment of installation voluntarily by user, layout quantity is a lot, and there is very large randomness in Home eNodeB access, for fear of the frequent switch of Home eNodeB, cause the impact on core network, therefore between Home eNodeB and core net node, add femto gateway, by femto gateway, a large amount of Home eNodeB are carried out the polymerization of chain of command and user's face.After introducing femto gateway, femto gateway is first registered or first established a connection to Home eNodeB, afterwards, by femto gateway and core net node, carry out the mutual of signaling and user data, thereby by femto gateway, shield because a large amount of Home eNodeB are disposed and the arbitrarily characteristic of the switch impact to core network, reduce the impact on core network.
Below in conjunction with Fig. 3, the principle that realizes of the embodiment of the present invention is described.Inventor finds, in prior art, between femto gateway and macro base station, there is no communication interface in realizing embodiment of the present invention process, there is no the storage femtocell information adjacent with macrocell at macro base station in the neighbor cell lists of safeguarding; And because Home eNodeB is Dynamical Deployment, between Home eNodeB and macro base station, do not support X2 standard communication interface at present.In the coverage at a macro base station, the number of Home eNodeB may be very huge; And Home eNodeB is controlled by owner, switching on and shutting down registration comparatively frequently, nullifies network service.If the registration of each Home eNodeB or cancellation, all will upgrade to macro base station, 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 configuring in neighbor cell lists need to report macro base station in measurement report, and this is all disadvantageous to interface-free resources utilization and minimizing handover delay.
Owing to having introduced femto gateway, Home eNodeB and core net node are carried out to the control of chain of command and data surface, and the relative Home eNodeB of femto gateway, negligible amounts and relative fixing opportunity with the access of network.Therefore, can collect by femto gateway the information of Home eNodeB, the communication interface (as: X interface) founding a family between base-station gateway and macro base station, the cell information of the Home eNodeB of collecting is sent to adjacent macro base station, by macro base station, in neighbor cell lists, safeguarded the information of the home base station cells adjacent with macrocell.When subscriber equipment need to carry out community switching, macro base station does not need subscriber equipment in the information of adjacent all home base station cells, measurement report report of user equipment current area, and can for subscriber equipment provides, need metrical information by the neighbor cell lists of safeguarding, be used for instructing 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, by femto gateway, handover request is sent to the Home eNodeB at place, Target cell, thereby be conducive to save interface-free resources, reduce the time delay that switch community, and improved the specific aim that subscriber equipment is measured, be conducive to for subscriber equipment power saving.
The method Signalling exchange figure that Fig. 4 switches for the community that third embodiment of the invention provides.The present embodiment is to take the application scenarios shown in Fig. 3 as example, and cell switching method technical scheme of the present invention is described.As shown in Figure 3 and Figure 4, the present embodiment comprises:
Step 41, Home eNodeB report self attributes information (that is: the femtocell information of the embodiment of the present invention) to femto gateway.
Home eNodeB can be when femto gateway be set up Iuh interface or S1 interface and is connected, to femto gateway, report the attribute information of oneself, under this situation, femtocell information is carried in S1 connection request (S1Setup Request) message or registering family base station request (HNB Registration Request) message, reports femto gateway.
Home eNodeB also can be when self information changes, to femto gateway, report the attribute information of self, under this situation, femtocell information is carried in Home eNodeB update request message (eNB Configuration Update), reports femto gateway.
In addition, Home eNodeB is also carried at self attributes information in proprietary message and reports femto gateway.The femtocell information that reports femto gateway 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 a piece of news and report femto gateway, also dispersible to be carried in multiple messages, to report femto gateway.
Step 43, femto gateway send response message to Home eNodeB.
When femto gateway receives the femtocell information that Home eNodeB reports, to Home eNodeB, send response.
Step 45, femto gateway send to macro base station by self attributes information (that is: the femto gateway information of the embodiment of the present invention) and the femtocell information obtaining.
Femto gateway sign (GW ID)), IP address (IP Address) etc. the femto gateway information that femto gateway sends to macro base station can comprise:.
The femtocell information that femto gateway sends to macro base station can comprise: 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 between femto gateway and macro base station, to set up the necessary condition (step 41 and step 43 are adopted and dotted in Fig. 4) that interface connects, when femto gateway does not obtain femtocell information, also can first set up interface with macro base station is connected, the femtocell information that reports again femto gateway to obtain afterwards, that is: the interface of femto gateway and macro base station is connected process of establishing, can obtain the femtocell information process associated with self with femto gateway, not be subject to the restriction of sequential relationship.
Femto gateway can initiatively send self attributes information and the femtocell information associated with self to macro base station.Under this situation, step 45 can comprise step 451a-455a.
Step 451a, femto gateway send X interface to macro base station and set up request message, in setting up request message, carries X interface femto gateway information, or, in X interface is set up request message, carry femto gateway information and associated femtocell information thereof.
If when femto gateway and macro base station are set up X interface and be connected, while also not having on femto gateway to obtain the femtocell information associated with this femto gateway, femto gateway can first report macro base station by the information of self; And obtained after femtocell information at femto gateway, then femtocell information is sent to macro base station.
When if femto gateway and macro base station are set up X interface and are connected, on femto gateway, obtained the femtocell information associated with this femto gateway, femto gateway can be carried at X interface by the information of self and femtocell information and sets up in request message so, report macro base station, or, femto gateway can establish after X interface with macro base station, to macro base station, sends femtocell information.
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 meeting update condition, reports the information of the Home eNodeB of renewal.Adoptable Event triggered strategy is for example: when the femtocell information obtaining when femto gateway changes, send the femtocell information upgrading, so that macro base station carries out information updating to macro base station.For reducing the number of times of the interacting message between macro base station and Home eNodeB, adoptable cycle trigger policy, for example: with Preset Time interval or in Preset Time section, to macro base station, send femtocell information; If variation has occurred the femtocell information that macro base station receives, macro base station will adopt the femtocell information obtaining recently to carry out information updating.
Step 455a, femto gateway, when meeting default update condition, send femtocell information to macro base station.
When meeting default update condition, femto gateway can send the femtocell information upgrading 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 associated femtocell information thereof.Under this situation, step 45 can comprise step 451b-455b.
Step 451b, macro base station send X interface to femto gateway and set up request message.In setting up request message, goes back X interface the default update condition of portability.
Step 453b, femto gateway, when meeting default update condition, send X interface response message to macro base station gateway.Portability femto gateway information in X interface response message, or, portability femto gateway information and the femtocell information associated with femto gateway in X interface response message, gone back.
Step 455b, at femto gateway and macro base station, set up after X interface is connected, femto gateway also can, when meeting default update condition, send femtocell information to macro base station.
Under this situation, femto gateway can send the femtocell information upgrading 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.
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 place, home base station cells.
When macro base station receives the femtocell information from the renewal of femto gateway, adopt the femtocell information upgrading to upgrade the femtocell information of storing in neighbor cell lists.
While safeguarding the neighbor cell lists that has the femtocell information that comprises femto gateway information and association thereof on macro base station, switch the community that can realize 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 measure to subscriber equipment controls parameter.
This measurement is controlled in parameter and is carried the cell information of home base station adjacent with the current place of subscriber equipment macrocell of storing in neighbor cell lists.Measuring control parameter can comprise: adjacent cell PCI, frequency, cell transmission bandwidths etc., if adjacent cell is home base station cells, measure the information such as closed subscriber group identity (CSG ID) that parameter also can comprise that Home eNodeB is supported of controlling.Measurement control parameter is carried in RRC reconfiguration message and sends to subscriber equipment.
The measurement that step 411, subscriber equipment send according to macro base station is controlled parameter and is carried out power measurement, and sends to macro base station the measurement report that comprises measurement result.
In measurement report, can comprise 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 that subscriber equipment is determined the Target cell that needs switching according to measurement report, to core net node, send the first handover request.
Macro base station can be by a plurality of home base station cells in the measurement report of user equipment to report, the Target cell that the home base station cells that power is the strongest need to be switched as subscriber equipment.After determining Target cell, macro base station, by inquiry neighbor cell lists, can obtain the femtocell information at place, Target cell and the femto gateway information of this Home eNodeB association.Afterwards, macro base station sends the first handover request to core net node, for the information of asking core net node to carry according to this request, carries out access control.
In the first handover request, portability has user ID, Target Cell Identifier and Home eNodeB sign, goes back the Home eNodeB pattern that portability has CSG ID and place, the Target cell Home eNodeB of Target cell; Wherein, 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 front yard base station mode of the CSG ID of Target cell and/or place, Target cell Home eNodeB; If the information exchange carrying in the first handover request is crossed access control, perform step so 419; Otherwise, perform step 417.
Core network entity can carry out access control to subscriber equipment according to the information of carrying in the first handover request, concrete access control flow process for example:
If while carrying the CSG ID of Target cell in the first handover request, core net is carried out access control according to the CSG ID of Target cell: the CSG ID list that core net node is supported according to the Home eNodeB obtaining, judge the CSG ID of the Target cell of carrying in the first handover request, in the CSG ID list of whether supporting at Home eNodeB; If so, this subscriber equipment is the signing user of Home eNodeB, and core net node allows the access of subscriber equipment; If not, this subscriber equipment is not the signing user of Home eNodeB, core net node does not allow the access of subscriber equipment.
Or, if while carrying the CSG ID of Target cell and Home eNodeB pattern information in the first handover request, core net node can carry out access control to subscriber equipment according to the CSG ID of Target cell and Home eNodeB pattern, specifically can comprise:
If the Home eNodeB pattern of place, Target cell Home eNodeB is open (Open) pattern, represent that so any subscriber equipment all can be accessed by this Home eNodeB, core net node does not need subscriber equipment to carry out access control, gives tacit consent to the validated user that this subscriber equipment is Home eNodeB;
If the Home eNodeB pattern of place, Target cell Home eNodeB is for mixing (Hybrid) pattern, preferentially meet closed user group user's business demand, guaranteeing under the prerequisite of closed user group customer service demand, allow user's access of non-closed user group, now, core net node can carry out access control to subscriber equipment according to the CSG id information in the first handover request;
If the Home eNodeB pattern of place, Target cell Home eNodeB is closed (Close) pattern, represent that so only the user of closed user group allows to access this Home eNodeB, now, core net node is according to the CSG ID in the first handover 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, now, core net node does not allow the access of subscriber equipment.
If step 417 core net node does not have by the access control of the first handover request, to macro base station, send refusal handover request message.Macro base station is after receiving this message, and switch this community that refusal subscriber equipment is carried out; Process ends.
Step 419, core net node are to this first handover request of the corresponding femto gateway route of femto gateway identification information of carrying in the first handover request; In the first handover request, carry the Home eNodeB sign at Target Cell Identifier and this place, Target cell.
Step 421, femto gateway, when receiving the first handover request, identify corresponding Home eNodeB to the Home eNodeB carrying in the first handover request and send the second handover request; In the second handover request, carry Target Cell Identifier.
Step 423, the Home eNodeB that receives the second handover request are that Radio Resource is prepared in this switching to Target cell of subscriber equipment.
Switch while being ready to Radio Resource step 425, this community that is subscriber equipment at Home eNodeB, and 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, when receiving the handoff request acknowledgment message of Home eNodeB, send handoff request acknowledgment message to macro base station.
Step 431, macro base station send community switching command to subscriber equipment.
Step 433, subscriber equipment, according to community switching command, are switched to home base station cells (that is: Target cell) from macrocell.
On the basis of technique scheme, macro base station also can be according to the femtocell information obtaining, for subscriber equipment is determined the coverage Xia of the Home eNodeB institute community that allows access, the Target cell of switching as subscriber equipment, on macro base station, realize the access control to subscriber equipment, and after subscriber equipment is by access control, the first handover request directly being sent to femto gateway, preparation resource is switched in this community that is subscriber equipment by femto gateway notice Home eNodeB.Or, on the basis of technique scheme, also can be by femto gateway according to the femtocell information obtaining, the access control of realization to subscriber equipment, and after subscriber equipment is by access control, the second handover request is sent to Home eNodeB, is this community switching preparation resource of subscriber equipment in order to notify Home eNodeB.
The 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 maintenance of neighbor cell list, make when subscriber equipment is initiated community switching, macro base station can provide the Home eNodeB coverage Xia metrical information of community for subscriber equipment according to this neighbor cell lists, according to the measurement result of subscriber equipment, determine the Target cell of switching, afterwards handover request is routed to the Home eNodeB at place, Target cell by the first access device, while having avoided subscriber equipment to switch between initiating from macrocell to home base station cells, subscriber equipment need read and report the broadcast message of a large amount of Home eNodeB, thereby be conducive to save interface-free resources, reduce the time delay that switch community, improve the specific aim of subscriber equipment cell measurement simultaneously, be conducive to for 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 for obtaining the femtocell information associated with described access device.
On the basis of technique scheme, the present embodiment access device information sending module 52 can comprise: lastest imformation sending module 53.
Lastest imformation sending module 53, for when meeting default update condition, sends described femtocell information to the second access device.
Further, lastest imformation sending module 53 can comprise the first lastest imformation transmitting element 531 and the second lastest imformation transmitting element 532.
When the first lastest imformation transmitting element 531 changes for the femtocell information obtaining at described the first access device, to described the second access device, send the femtocell information upgrading.
The second lastest imformation transmitting element 532, for Preset Time interval or in Preset Time section, sends described femtocell information to described the second access device.
In specific implementation, the present embodiment access device can be specially Home eNodeB is carried out to the equipment that user's face and chain of command carry out cohesively managed, as: femto gateway etc.
The present embodiment is by providing this access device information and associated femtocell information thereof to the second access device, making the second access device can be the definite Target cell of switching and the Home eNodeB at place, Target cell of needing of subscriber equipment according to the information of obtaining, afterwards handover request is routed to the Home eNodeB at place, Target cell by the first access device, avoided subscriber equipment initiating from the community of the second access device coverage when switching the community of family's base station range, the broadcast message of a large amount of Home eNodeB reading to the second access device report of user equipment, thereby be conducive to save interface-free resources, reduce the time delay that switch community.Further, the update strategy that the present embodiment employing cycle triggers, thereby can when meeting the condition of update strategy setting, just to the second access device, report corresponding femtocell information, thus reduce the number of times of information updating, be conducive to save system resource.
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.
Target cell determination module 62 is for according to described the first access device information and femtocell information, for subscriber equipment is determined Target cell that need to switch, under 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 for according to described the first access device information and the femtocell information associated with the first access device, sets up neighbor cell lists.
Metrical information transmitting element 622 is for according to described neighbor cell lists, for subscriber equipment provides the cell information under the described Home eNodeB coverage that needs to measure.
Target cell determining unit 623 is for according to the measurement result of described subscriber equipment, for subscriber equipment is determined Target cell that need to switch, under 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 the first access device when meeting 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, for when obtaining the femtocell information of renewal, is carried out the information updating of described neighbor cell lists.
The present embodiment is in specific implementation, and the present embodiment access device can be: macro base station, radio network controller etc.
The present embodiment comprises the neighbor cell lists of the femtocell information of the first access device and association thereof by foundation, make when subscriber equipment is initiated community switching, can provide metrical information for subscriber equipment according to this neighbor cell lists, and determine the Target cell under the Home eNodeB coverage that subscriber equipment need switch according to the measurement result of subscriber equipment, afterwards handover request is routed to the Home eNodeB at place, Target cell by the first access device, while having avoided subscriber equipment to switch between initiating from macrocell to home base station cells, subscriber equipment need read and report the broadcast message of a large amount of Home eNodeB, thereby be conducive to save interface-free resources, reduce the time delay that switch community, be conducive to improve the specific aim that subscriber equipment is measured simultaneously, for subscriber equipment power saving.Further, the update strategy that the present embodiment employing cycle triggers, thereby can be when meeting the condition that update strategy sets just needs the first access device report corresponding femtocell information, thereby reduce the number of times of information updating, be conducive to save system resource.
The system configuration schematic diagram that Fig. 7 switches for the community that sixth embodiment of the invention provides.As shown in Figure 7, the system that switch the present embodiment community comprises: the first access device 71, the second access device 72 and Home eNodeB 73.
The first access device 71 is for obtaining Home eNodeB 73 information associated with the first access device 71; The first access device 71 information and Home eNodeB 73 information are sent to the second access device 72.
The second access device 72 is for according to the first access device information and Home eNodeB 73 information associated with the first access device 71, for subscriber equipment is determined Target cells that need to switch, under Home eNodeB 73 coverages.
In specific implementation, the present embodiment the first access device can be specially Home eNodeB is carried out to the equipment that user's face and chain of command carry out cohesively managed, as: femto gateway etc.The present embodiment the second access device can be: macro base station, radio network controller etc.About the first access device and the further refined structure of the second access device, can, referring to the record of Fig. 5 and the corresponding embodiment of Fig. 6, repeat no more.
The present embodiment is set up interface between the first access device (as femto gateway) and the second access device (as: macro base station), the femtocell information that the first access device is collected sends to the second access device, by the second access device according to the first access device information and femtocell information, determine the Target cell under the Home eNodeB coverage that subscriber equipment switches, afterwards handover request is routed to the Home eNodeB at place, Target cell by the first access device, while having avoided subscriber equipment to switch between initiating from macrocell to home base station cells, subscriber equipment need read and report the broadcast message of a large amount of Home eNodeB, thereby be conducive to save interface-free resources, reduce the time delay that switch community.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of a preferred embodiment, the module in 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 in embodiment can be described and be distributed in the device of embodiment according to embodiment, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computer read/write memory medium, this program, when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record previous embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of embodiment of the present invention technical scheme.
Claims (15)
- The method that switch 1.Yi Zhong community, is characterized in that, comprising:The first access device obtains the femtocell information associated with the first access device, and described the first access device is for carrying out the equipment of the cohesively managed of user's face and chain of command to Home eNodeB;Described the first access device sends described the first access device information and femtocell information to the second access device, for described the second access device, according to described the first access device information and femtocell information, be that subscriber equipment is determined the Target cell under described Home eNodeB coverage, described the second access device is the base station equipment in grand network, wherein, the communication interface between the first access device and the second access device is X interface.
- 2. the method that switch community according to claim 1, is characterized in that, also comprises:When meeting default update condition, to described the second access device, send described femtocell information.
- 3. the method that switch community according to claim 2, is characterized in that, described when meeting default update condition, to described the second access device, sends described femtocell information, comprising:When the femtocell information obtaining at described the first access device changes, to described the second access device, send the femtocell information upgrading; OrWith Preset Time interval or in Preset Time section, to described the second access device, send described femtocell information.
- The method that switch 4.Yi Zhong community, is characterized in that, comprising:The second access device receives from the first access device information of the first access device and the femtocell information associated with the first access device, described the first access device is for carrying out the equipment of the cohesively managed of user's face and chain of command to Home eNodeB, described the second access device is the base station equipment in grand network, wherein, the communication interface between the first access device and the second access device is X interface;Described the second access device is according to described the first access device information and femtocell information, for subscriber equipment is determined the Target cell under described Home eNodeB coverage.
- 5. the method that switch community according to claim 4, is characterized in that, according to described the first access device information and femtocell information, for subscriber equipment, determines the Target cell under described Home eNodeB coverage, comprising:According to described the first access device information and the femtocell information associated with the first access device, set up neighbor cell lists;According to described neighbor cell lists, for subscriber equipment provides the cell information under the described Home eNodeB coverage that needs to measure;According to the measurement result of described subscriber equipment, for subscriber equipment is determined the Target cell under described Home eNodeB coverage.
- 6. the method that switch community according to claim 5, is characterized in that, also comprises:Indicate described the first access device when meeting default update condition, send described femtocell information.
- 7. the method for switching according to the community described in claim 5 or 6, is characterized in that, also comprises:When obtaining the femtocell information of renewal, carry out the information updating of described neighbor cell lists.
- 8. an access device, described access device is the first access device, it is characterized in that, comprising:Femtocell information acquisition module, for obtaining the femtocell information associated with described access device;Information sending module, for described access device information and femtocell information are sent to the second access device, for described the second access device, according to described the first access device information and femtocell information, be that subscriber equipment is determined the Target cell under described Home eNodeB coverage, described the first access device is for carrying out the equipment of the cohesively managed of user's face and chain of command to Home eNodeB, described the second access device is the base station equipment in grand network, wherein, the communication interface between the first access device and the second access device is X interface.
- 9. access device according to claim 8, is characterized in that, described information sending module comprises:Lastest imformation sending module, for when meeting default update condition, sends described femtocell information to the second access device.
- 10. access device according to claim 9, is characterized in that, described lastest imformation sending module comprises:The first lastest imformation transmitting element, while changing for the described femtocell information obtaining, sends to described the second access device the femtocell information upgrading;The second lastest imformation transmitting element, for Preset Time interval or in Preset Time section, sends described femtocell information to described the second access device.
- 11. 1 kinds of access devices, described access device is the second access device, it is characterized in that, comprising:Receiver module, for receiving from the first access device information of the first access device and the femtocell information associated with the first access device, described the first access device is for carrying out the equipment of the cohesively managed of user's face and chain of command to Home eNodeB, described the second access device is the base station equipment in grand network, wherein, the communication interface between the first access device and the second access device is X interface;Target cell determination module, for according to described the first access device information and femtocell information, for subscriber equipment is determined the Target cell under described Home eNodeB coverage.
- 12. access devices according to claim 11, is characterized in that, described Target cell determination module comprises:Neighbor cell lists is set up unit, for according to described the first access device information and the femtocell information associated with the first access device, sets up neighbor cell lists;Metrical information transmitting element, for according to described neighbor cell lists, for subscriber equipment provides the cell information under the described Home eNodeB coverage that needs to measure;Target cell determining unit, for according to the measurement result of described subscriber equipment, for subscriber equipment is determined the Target cell under described Home eNodeB coverage.
- 13. access devices according to claim 12, is characterized in that, also comprise:Upgrade indicating module, be used to indicate described the first access device when meeting default update condition, send described femtocell information.
- 14. according to the access device described in claim 12 or 13, it is characterized in that, also comprises:Neighbor cell lists information updating module, for when obtaining the femtocell information of renewal, carries out the information updating of described neighbor cell lists.
- The system that switch 15.Yi Zhong community, is characterized in that, comprises the first access device, the second access device and Home eNodeB;Described the first access device is for obtaining the femtocell information associated with described the first access device; Described the first access device information and femtocell information are sent to described the second access device, and described the first access device is for carrying out the equipment of the cohesively managed of user's face and chain of command to Home eNodeB;Described the second access device is used for according to described the first access device information and the femtocell information associated with the first access device, for subscriber equipment is determined the Target cell under described Home eNodeB coverage, described the second access device is the base station equipment in grand network, wherein, the communication interface between the first access device and the second access device is X interface.
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