CN104363621A - Tracking area management entity, switching method based on tracking area change and switching device based on tracking area change - Google Patents
Tracking area management entity, switching method based on tracking area change and switching device based on tracking area change Download PDFInfo
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- CN104363621A CN104363621A CN201410650154.5A CN201410650154A CN104363621A CN 104363621 A CN104363621 A CN 104363621A CN 201410650154 A CN201410650154 A CN 201410650154A CN 104363621 A CN104363621 A CN 104363621A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
Abstract
The invention provides a switching method based on tracking area change. The method includes the steps that when a service base station connected with a terminal is switched to a second service base station from a first service base station, whether a first tracking area which the first service base station belongs to and a second tracking area which the second service base station belongs to are the same tracking area or not is judged; when the first tracking area and the second tracking area are the same tracking area, the second service base station is controlled not to send a path switching request to a core network, a target path is established in the first tracking area, and accordingly the second service base station can be in data and/or signal interaction with the core network through the target path. Correspondingly, the invention further provides a tracking area management entity and a switching device based on tracking area change. According to the technical scheme, the huge signal overhead problem which is brought to the core network by user frequent switching in a super dense network can be solved, and therefore the operating performance of the core network is improved.
Description
Technical field
The present invention relates to cell merge technical field, in particular to a kind of tracing area management entity, a kind of changing method based on tracking area change and a kind of switching device shifter based on tracking area change.
Background technology
3GPP in order to improve the network capacity in dense traffic type region, subordinate small cell.And in some hot spot region; as places such as stadium, market, cinema, exhibition centers; often there will be the business demand of huge amount; need to dispose very many small cell in this region like this; namely present super-intensive network (UDN, Ultra Dense Network).
For the high-end user that legacy user or low speed move and can not do carrier aggregation or be bi-directionally connected, small cell can only be connected separately.And this user when moving in super-intensive network, because small cell coverage is little, even so low-speed mobile users also can move to another small cell from a small cell frequently, bring and switch frequently.Based on traditional switching flow, as shown in Figure 1, as long as be in PCI (the Physical CellID of the user Serving cell of connection status, Physical Cell Identifier) change, will switch, need to carry out signaling and data interaction between target BS and core net (Mobility Management Entity and gateway) when having switched, the upper layer path realizing core-network side switches, as shown in Figure 1 the 8th, 9 and 10 steps.That is target BS needs to inform core net, later about data and the signaling of this switching user, all by mutual between this target BS and core net, instead of has carried out alternately with original serving BS.
So, upper layer path here exchanges the signaling consumption that will increase S1 interface between base station and core net.
The defect of existing scheme is:
Because in super-intensive network, small cell is many, coverage is little, and user is also many, and so each user often changes a small cell and can occur once to switch.This switches each time all to need between base station and core net by S1 interactive interfacing once, S1 interface signaling load certainly will be made so sharply to increase, likely make core net normally to work.That is the shortcoming of existing scheme is that the anchor point switched is in core net, so make core network signalling load increase.
Therefore need a kind of new technical scheme, the problem that user in super-intensive network frequently switches the huge signaling consumption brought to core net can be reduced, thus improve the runnability of core net.
Summary of the invention
The present invention, just based on the problems referred to above, proposes a kind of new technical scheme, can reduce the problem that user in super-intensive network frequently switches the huge signaling consumption brought to core net, thus improves the runnability of core net.
In view of this, the present invention proposes a kind of tracing area management entity, described tracing area management entity is arranged on and belongs between multiple serving BS of same tracing area and core net, or be arranged in macro cell base station, for the cooperation between the data/that manage or distribute in described tracing area or signaling and management community.
In this technical scheme, tracing area can be arranged on and belong between multiple serving BS of same tracing area and core net, also can be arranged in macro cell base station.Thus management or distribution tracing area in data and/or signaling, also can manage the cooperation between community, the combined dispatching etc. of such as CoMP.
In technique scheme, preferably, the described tracing area of described tracing area management entity management is all small-cells under a macrocell coverage area, or the part small-cell under a macrocell coverage area or the some or all small-cells under multiple macrocell coverage area.
According to a further aspect in the invention, additionally provide a kind of changing method based on tracking area change, comprise: when the serving BS be connected with terminal is switched to second service base station from first service base station, judge whether the first tracing area belonging to described first service base station and the second tracing area belonging to described second service base station are same tracing area; When described first tracing area and described second tracing area are same tracing area, control described second service base station not transmit path handover request to core net, and destination path is set up in described first tracing area, realize the mutual of data between described core net and/or signaling to make described second service base station by described destination path.
In this technical scheme, whether be in same tracing area according to two serving BSs carrying out switching and judge whether to send upper layer path handover request to switch upper layer path to core net.Particularly, when two serving BSs are in same tracing area, do not send upper layer path handover request, when two serving BSs are in different tracing area, send upper layer path and follow the tracks of request, like this, the internetwork user of super-intensive can be reduced and switch the signaling consumption brought to core net, improve the runnability of core net.
In technique scheme, preferably, also comprise: judge described first service base station, between described second service base station and described core net, whether there is tracing area management entity; When for there is not described tracing area management entity in judged result, directly between described first service base station and described second service base station, set up destination path, described data and/or the signaling of the transmission of described core net is received by described first service base station, and described data and/or signaling are forwarded to described second service base station by described destination path, and received described data and/or the signaling of the transmission of described second service base station by described first service base station, and be forwarded to described core net by described destination path.
In this technical scheme, when there is not tracing area management entity, directly directly set up destination path in first service base station and second service base station, thus when making to be switched to second service base station from first service base station, do not send upper layer path and handover request to core net, core net continues to send data to first service base station, second service base station is sent to again by first service base station, like this, the internetwork user of super-intensive can be reduced and switch the signaling consumption brought to core net, improve the runnability of core net.
Particularly, the destination path set up between first service base station and second service base station can be direct link, also using other serving BSs as transfer, can set up indirect link.
In technique scheme, preferably, also comprise: when judged result is for existing described tracing area management entity, described path handover request is sent to the second tracing area management entity corresponding to described second tracing area by described second service base station; When described first tracing area and described second tracing area are same tracing area, the first tracing area management entity that then described first tracing area is corresponding and described second tracing area management entity are same tracing area management entity, and described data and/or signaling are sent to described first tracing area management entity by described core net or described second service base station; Described data and/or signaling, according to the path handover request sent from described second service base station received, are sent to described second service base station or described core net by described first tracing area management entity.
In this technical scheme, when there is tracing area management entity, judge whether two serving BSs carrying out switching are in same tracing area, corresponding same tracing area management entity, when judged result is for being, do not need to send upper layer path and handover request to core net, data and/or the signaling of core net or serving BS transmission is directly received by tracing area management entity, and carry out correspondence distribution, thus make the switching of the base station in same tracing area not need core net to carry out path allocation, thus the internetwork user of minimizing super-intensive switches the signaling consumption brought to core net, improve the runnability of core net.
In technique scheme, preferably, also comprise: when described first tracing area and described second tracing area are different tracing area, described first tracing area management entity and described second tracing area management entity are different tracing area management entities, the described path handover request from described second service base station received is sent to described core net by described second tracing area management entity, be the connection of the foundation of described second service base station and described second tracing management entity according to described path handover request for described core net, to be realized the mutual of data between described second service base station and described core net and/or signaling by described second tracing management entity.
In this technical scheme, when two serving BSs carrying out switching belong to different tracing area management entities, then tracing area management entity needs path handover request to be carried out upper sending out, be sent to core net, connected between the second tracing area management entity that second service base station is corresponding by core net, thus realize the mutual of data and/or signaling.
In accordance with a further aspect of the present invention, additionally provide a kind of switching device shifter based on tracking area change, comprise: judging unit, when the serving BS be connected with terminal is switched to second service base station from first service base station, judge whether the first tracing area belonging to described first service base station and the second tracing area belonging to described second service base station are same tracing area; Processing unit, when described first tracing area and described second tracing area are same tracing area, control described second service base station not transmit path handover request to core net, and destination path is set up in described first tracing area, realize the mutual of data between described core net and/or signaling to make described second service base station by described destination path.
In this technical scheme, whether be in same tracing area according to two serving BSs carrying out switching and judge whether to send upper layer path handover request to switch upper layer path to core net.Particularly, when two serving BSs are in same tracing area, do not send upper layer path handover request, when two serving BSs are in different tracing area, send upper layer path and follow the tracks of request, like this, the internetwork user of super-intensive can be reduced and switch the signaling consumption brought to core net, improve the runnability of core net.
In technique scheme, preferably, described judging unit also for: judge described first service base station, between described second service base station and described core net, whether there is tracing area management entity; Described processing unit also for: judged result for there is not described tracing area management entity time, directly between described first service base station and described second service base station, set up destination path, described data and/or the signaling of the transmission of described core net is received by described first service base station, and described data and/or signaling are forwarded to described second service base station by described destination path, and received described data and/or the signaling of the transmission of described second service base station by described first service base station, and be forwarded to described core net by described destination path.
In this technical scheme, when there is not tracing area management entity, directly directly set up destination path in first service base station and second service base station, thus when making to be switched to second service base station from first service base station, do not send upper layer path and handover request to core net, core net continues to send data to first service base station, second service base station is sent to again by first service base station, like this, the internetwork user of super-intensive can be reduced and switch the signaling consumption brought to core net, improve the runnability of core net.
Particularly, the destination path set up between first service base station and second service base station can be direct link, also using other serving BSs as transfer, can set up indirect link.
In technique scheme, preferably, also comprise: transmitting element, when judged result is for existing described tracing area management entity, controls described second service base station and described path handover request being sent to the second tracing area management entity corresponding to described second tracing area, described processing unit also for: when described first tracing area and described second tracing area are same tracing area, the first tracing area management entity that then described first tracing area is corresponding and described second tracing area management entity are same tracing area management entity, control described core net or described data and/or signaling are sent to described first tracing area management entity by described second service base station, and control described first tracing area management entity according to the path handover request sent from described second service base station received, described data and/or signaling are sent to described second service base station or described core net.
In this technical scheme, when there is tracing area management entity, judge whether two serving BSs carrying out switching are in same tracing area, corresponding same tracing area management entity, when judged result is for being, do not need to send upper layer path and handover request to core net, data and/or the signaling of core net or serving BS transmission is directly received by tracing area management entity, and carry out correspondence distribution, thus make the switching of the base station in same tracing area not need core net to carry out path allocation, thus the internetwork user of minimizing super-intensive switches the signaling consumption brought to core net, improve the runnability of core net.
In technique scheme, preferably, described processing unit also for: when described first tracing area and described second tracing area are different tracing area, described first tracing area management entity and described second tracing area management entity are different tracing area management entities, control described second tracing area management entity and the described path handover request from described second service base station received is sent to described core net, be the connection of the foundation of described second service base station and described second tracing management entity according to described path handover request for described core net, to be realized the mutual of data between described second service base station and described core net and/or signaling by described second tracing management entity.
In this technical scheme, when two serving BSs carrying out switching belong to different tracing area management entities, then tracing area management entity needs path handover request to be carried out upper sending out, be sent to core net, set up the connection between the second tracing area management entity that second service base station is corresponding by core net, thus realize the mutual of data and/or signaling.
By above technical scheme, base station or the tracing area management entity of below core net is terminated in by limiting the anchor point switched between different districts under same tracing area, when user is switched between same tracing area different districts, it is mutual that Mobility Management Entity/gateway does not participate in hand off signaling, and when just thinking that user switches between the community that occurs under different tracing area, Mobility Management Entity/gateway just participates in the Signalling exchange that upper layer path switches.Because a tracing area can cover a lot of communities, so present invention substantially reduces user in super-intensive network frequently switch the huge signaling consumption brought to core net, core net runnability is improved.
Accompanying drawing explanation
Fig. 1 shows serving BS switching flow schematic diagram in correlation technique;
Fig. 2 shows according to an embodiment of the invention based on the flow chart of the changing method of tracking area change;
Fig. 3 shows according to an embodiment of the invention based on the block diagram of the switching device shifter of tracking area change;
Fig. 4 shows the schematic diagram of the direct forward-path of data/signaling according to an embodiment of the invention;
Fig. 5 shows link establishment schematic diagram according to an embodiment of the invention;
Fig. 6 shows link establishment schematic diagram according to another embodiment of the invention;
Fig. 7 shows the schematic diagram of the indirect forward-path of data/signaling according to an embodiment of the invention;
Fig. 8 shows the structural representation of tracing area according to an embodiment of the invention management management entity.
Embodiment
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Fig. 2 shows according to an embodiment of the invention based on the flow chart of the changing method of tracking area change.
As shown in Figure 2, according to an embodiment of the invention based on the changing method of tracking area change, comprise: step 202, when the serving BS be connected with terminal is switched to second service base station from first service base station, judge whether the first tracing area belonging to described first service base station and the second tracing area belonging to described second service base station are same tracing area; Step 204, when described first tracing area and described second tracing area are same tracing area, control described second service base station not transmit path handover request to core net, and destination path is set up in described first tracing area, realize the mutual of data between described core net and/or signaling to make described second service base station by described destination path.
In this technical scheme, whether be in same tracing area according to two serving BSs carrying out switching and judge whether to send upper layer path handover request to switch upper layer path to core net.Particularly, when two serving BSs are in same tracing area, do not send upper layer path handover request, when two serving BSs are in different tracing area, send upper layer path and follow the tracks of request, like this, the internetwork user of super-intensive can be reduced and switch the signaling consumption brought to core net, improve the runnability of core net.
In technique scheme, preferably, also comprise: judge described first service base station, between described second service base station and described core net, whether there is tracing area management entity; When for there is not described tracing area management entity in judged result, directly between described first service base station and described second service base station, set up destination path, described data and/or the signaling of the transmission of described core net is received by described first service base station, and described data and/or signaling are forwarded to described second service base station by described destination path, and received described data and/or the signaling of the transmission of described second service base station by described first service base station, and be forwarded to described core net by described destination path.
In this technical scheme, when there is not tracing area management entity, directly directly set up destination path in first service base station and second service base station, thus when making to be switched to second service base station from first service base station, do not send upper layer path and handover request to core net, core net continues to send data to first service base station, second service base station is sent to again by first service base station, like this, the internetwork user of super-intensive can be reduced and switch the signaling consumption brought to core net, improve the runnability of core net.
Particularly, the destination path set up between first service base station and second service base station can be direct link, also using other serving BSs as transfer, can set up indirect link.
In technique scheme, preferably, also comprise: when judged result is for existing described tracing area management entity, described path handover request is sent to the second tracing area management entity corresponding to described second tracing area by described second service base station; When described first tracing area and described second tracing area are same tracing area, the first tracing area management entity that then described first tracing area is corresponding and described second tracing area management entity are same tracing area management entity, and described data and/or signaling are sent to described first tracing area management entity by described core net or described second service base station; Described data and/or signaling, according to the path handover request sent from described second service base station received, are sent to described second service base station or described core net by described first tracing area management entity.
In this technical scheme, when there is tracing area management entity, judge whether two serving BSs carrying out switching are in same tracing area, corresponding same tracing area management entity, when judged result is for being, do not need to send upper layer path and handover request to core net, data and/or the signaling of core net or serving BS transmission is directly received by tracing area management entity, and carry out correspondence distribution, thus make the switching of the base station in same tracing area not need core net to carry out path allocation, thus the internetwork user of minimizing super-intensive switches the signaling consumption brought to core net, improve the runnability of core net.
In technique scheme, preferably, also comprise: when described first tracing area and described second tracing area are different tracing area, described first tracing area management entity and described second tracing area management entity are different tracing area management entities, the described path handover request from described second service base station received is sent to described core net by described second tracing area management entity, be the connection of the foundation of described second service base station and described second tracing management entity according to described path handover request for described core net, to be realized the mutual of data between described second service base station and described core net and/or signaling by described second tracing management entity.
In this technical scheme, when two serving BSs carrying out switching belong to different tracing area management entities, then tracing area management entity needs path handover request to be carried out upper sending out, be sent to core net, set up the connection between the second tracing area management entity that second service base station is corresponding by core net, thus realize the mutual of data and/or signaling.
Fig. 3 shows according to an embodiment of the invention based on the block diagram of the switching device shifter of tracking area change.
As shown in Figure 3, according to an embodiment of the invention based on the switching device shifter 300 of tracking area change, comprise: judging unit 302, when the serving BS be connected with terminal is switched to second service base station from first service base station, judge whether the first tracing area belonging to described first service base station and the second tracing area belonging to described second service base station are same tracing area; Processing unit 304, when described first tracing area and described second tracing area are same tracing area, control described second service base station not transmit path handover request to core net, and destination path is set up in described first tracing area, realize the mutual of data between described core net and/or signaling to make described second service base station by described destination path.
In this technical scheme, whether be in same tracing area according to two serving BSs carrying out switching and judge whether to send upper layer path handover request to switch upper layer path to core net.Particularly, when two serving BSs are in same tracing area, do not send upper layer path handover request, when two serving BSs are in different tracing area, send upper layer path and follow the tracks of request, like this, the internetwork user of super-intensive can be reduced and switch the signaling consumption brought to core net, improve the runnability of core net.
In technique scheme, preferably, described judging unit 302 also for: judge described first service base station, between described second service base station and described core net, whether there is tracing area management entity; Described processing unit 304 also for: judged result for there is not described tracing area management entity time, directly between described first service base station and described second service base station, set up destination path, described data and/or the signaling of the transmission of described core net is received by described first service base station, and described data and/or signaling are forwarded to described second service base station by described destination path, and received described data and/or the signaling of the transmission of described second service base station by described first service base station, and be forwarded to described core net by described destination path.
In this technical scheme, when there is not tracing area management entity, directly directly set up destination path in first service base station and second service base station, thus when making to be switched to second service base station from first service base station, do not send upper layer path and handover request to core net, core net continues to send data to first service base station, second service base station is sent to again by first service base station, like this, the internetwork user of super-intensive can be reduced and switch the signaling consumption brought to core net, improve the runnability of core net.
Particularly, the destination path set up between first service base station and second service base station can be direct link, also using other serving BSs as transfer, can set up indirect link.
In technique scheme, preferably, also comprise: transmitting element 306, when judged result is for existing described tracing area management entity, controls described second service base station and described path handover request being sent to the second tracing area management entity corresponding to described second tracing area, described processing unit 304 also for: when described first tracing area and described second tracing area are same tracing area, the first tracing area management entity that then described first tracing area is corresponding and described second tracing area management entity are same tracing area management entity, control described core net or described data and/or signaling are sent to described first tracing area management entity by described second service base station, and control described first tracing area management entity according to the path handover request sent from described second service base station received, described data and/or signaling are sent to described second service base station or described core net.
In this technical scheme, when there is tracing area management entity, judge whether two serving BSs carrying out switching are in same tracing area, corresponding same tracing area management entity, when judged result is for being, do not need to send upper layer path and handover request to core net, data and/or the signaling of core net or serving BS transmission is directly received by tracing area management entity, and carry out correspondence distribution, thus make the switching of the base station in same tracing area not need core net to carry out path allocation, thus the internetwork user of minimizing super-intensive switches the signaling consumption brought to core net, improve the runnability of core net.
In technique scheme, preferably, described processing unit 304 also for: when described first tracing area and described second tracing area are different tracing area, described first tracing area management entity and described second tracing area management entity are different tracing area management entities, control described second tracing area management entity and the described path handover request from described second service base station received is sent to described core net, be the connection of the foundation of described second service base station and described second tracing management entity according to described path handover request for described core net, to be realized the mutual of data between described second service base station and described core net and/or signaling by described second tracing management entity.
In this technical scheme, when two serving BSs carrying out switching belong to different tracing area management entities, then tracing area management entity needs path handover request to be carried out upper sending out, be sent to core net, set up the connection between the second tracing area management entity that second service base station is corresponding by core net, thus realize the mutual of data and/or signaling.
Technical scheme of the present invention is described in detail below in conjunction with Fig. 4 to Fig. 8.
The first scheme is the constant situation of structure Network Based, specific as follows:
As shown in Figure 1, user is after the report of transmission handover measurement, and serving BS can select the target BS of candidate based on handover measurement report, and sends handover request to candidate target base station.The present invention proposes the tracing area number adding serving BS place in handover request, and that is serving BS needs the tracing area number of oneself to inform candidate target base station (the 3rd step namely in Fig. 1) by handover request.
Candidate target base station, according to conventional method, after receiving handover request, carries out access control according to switching user's request, if handover success, then feeds back handover request and successfully replies.
After the successful connection of user and target BS, after the 7th step success namely in Fig. 1, do not perform the 8th step in figure immediately: upper layer path handover request.But based on the method for this programme, target BS first judges that whether the tracing area number of serving BS is identical with the tracing area number of oneself, if different, then performs the 8th step; If identical, then do not perform the 8th step, namely the 8th, 9 and 10 steps do not perform.
Due to tracing area number constant time, target BS does not ask the change of upper layer path, so the data of user still send to serving BS based on original path, just all need to be transmitted to target BS through serving BS like this with user-dependent data and signaling.
Serving BS is transmitted to the method for target BS: because time tradition switches, when switching execution, just have the process of data retransmission.To downlink data, issue user as serving BS but also confiscated the successful packet of reception of user feedback, or serving BS is not also to the packet still having arrived serving BS that user sends, and these packets all can send to target BS by the interface between serving BS and target BS.And the present invention propose method in, core net also can continue to send the data to serving BS after the handover, serving BS by data retransmission to target BS.
1) if having directly desirable back haul link or direct X2 interface between serving BS and target BS, serving BS directly sends the data to target BS by desirable back haul link or X2 interface, as shown in Figure 4.
Along with the movement of user, user may be switched to base station #2 and be switched to base station #3 and be switched to again base station #4 from initial base station #1, but Mobility Management Entity/gateway all sends to base station #1 user data and signaling always.If these data all wish directly to be transmitted to current serving BS by base station #1, serving BS as present is base station #4, so need base station #3 signals base #4 about the information of base station #1, also need base station #3 signals base #1 about the information of base station #4, be convenient to the link between base station #1 and base station #4 foundation.And the information of base station #1 should be by base station #2 signals base #3 before, so repeatedly go down, as shown in Figure 5 and Figure 6.
2) if do not have direct desirable back haul link or X2 interface between serving BS and target BS, so, other base station is also needed to do transfer.Such as data are passed to adjacent base station #3 by serving BS #1 and are passed to target BS #2 again, as shown in Figure 7.
First scheme is in existing network configuration, adds a tracing area management entity between base station and core net, specific as follows:
The tracing area number of the community under a tracing area management entity is all the same, and the function of this entity mainly manages and distribute data and the signaling of the user of the community in its territory, area under control, as shown in Figure 8:
1) tracing area management entity is arranged on base station, under core net.Can certainly tracing area management entity be arranged in macro cell base station, the cooperation between management community, the combined dispatching etc. of such as CoMP.The tracing area of tracing area management entity management is all small-cells under a macrocell coverage area, or the part small-cell under a macrocell coverage area or the some or all small-cells under multiple macrocell coverage area.
2) interface is had between different tracing area management entities to carry out data and Signalling exchange.
3) have directly between the different districts under same tracing area or indirectly X2 interface or desirable back haul link.
4) have directly between the different districts under different tracing area or indirectly X2 interface or desirable back haul link.
Based on the network structure that Fig. 8 provides, the present invention proposes, when switching occurs in the different districts under same tracing area management entity, to switch anchor point and terminate in tracing area management entity.Such as when user switches between base station #1 and base station #2, switching flow conventionally completes above after 7 steps, and in step 8, target BS sends upper layer path handover request to tracing area management entity #1.In step 9, tracing area management entity #1 records the data of this user and signaling is all transmitted to target BS #2 later, and in step 10, tracing area management entity #1 has switched to target BS feedback upper layer path.And Mobility Management Entity/gateway does not participate in its handoff procedure, only know this user also in the compass of competency of tracing area management entity #1.
Based on the network structure that Fig. 8 provides, the present invention proposes when switching occurs in the different districts under different tracing area management entity, and switching anchor point terminates in the Mobility Management Entity/gateway on tracing area management entity.Such as when user is switched to base station #3 from base station #2, when user complete with the random access procedure of target BS #3 after, target BS #3 can send upper layer path handover request to tracing area management entity #2.After tracing area management entity #2 receives request, record this user profile, and be all transmitted to base station #3 about the data of this user and signaling after remembeing.Meanwhile, tracing area management entity #2 sends upper layer path handover request to Mobility Management Entity/gateway.After Mobility Management Entity/gateway receives request, record this user profile, and all issue tracing area management entity #2 about the data of this user and signaling after remembeing, instead of original tracing area management entity #1.In this case, Mobility Management Entity/gateway take part in handoff procedure, but only knows that this user is in the compass of competency of tracing area management entity #2, but does not know at base station #3 or base station #4.
More than be described with reference to the accompanying drawings technical scheme of the present invention, by technical scheme of the present invention, base station or the tracing area management entity of below core net is terminated in by limiting the anchor point switched between different districts under same tracing area, when user is switched between same tracing area different districts, it is mutual that Mobility Management Entity/gateway does not participate in hand off signaling, and when just thinking that user switches between the community that occurs under different tracing area, Mobility Management Entity/gateway just participates in the Signalling exchange that upper layer path switches.Because a tracing area can cover a lot of communities, so present invention substantially reduces user in super-intensive network frequently switch the huge signaling consumption brought to core net, core net runnability is improved.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a tracing area management entity, is characterized in that,
Described tracing area management entity is arranged on and belongs between multiple serving BS of same tracing area and core net, or is arranged in macro cell base station, for the cooperation between the data/that manage or distribute in described tracing area or signaling and management community.
2. tracing area management entity according to claim 1, is characterized in that,
The described tracing area of described tracing area management entity management is all small-cells under a macrocell coverage area, or the part small-cell under a macrocell coverage area or the some or all small-cells under multiple macrocell coverage area.
3., based on a changing method for tracking area change, it is characterized in that, comprising:
When the serving BS be connected with terminal is switched to second service base station from first service base station, judge whether the first tracing area belonging to described first service base station and the second tracing area belonging to described second service base station are same tracing area;
When described first tracing area and described second tracing area are same tracing area, control described second service base station not transmit path handover request to core net, and destination path is set up in described first tracing area, realize the mutual of data between described core net and/or signaling to make described second service base station by described destination path.
4. the changing method based on tracking area change according to claim 3, is characterized in that, also comprise:
Judge described first service base station, between described second service base station and described core net, whether there is tracing area management entity;
When for there is not described tracing area management entity in judged result, directly between described first service base station and described second service base station, set up destination path, described data and/or the signaling of the transmission of described core net is received by described first service base station, and described data and/or signaling are forwarded to described second service base station by described destination path, and received described data and/or the signaling of the transmission of described second service base station by described first service base station, and be forwarded to described core net by described destination path.
5. the changing method based on tracking area change according to claim 4, is characterized in that, also comprise:
When judged result is for existing described tracing area management entity, described path handover request is sent to the second tracing area management entity corresponding to described second tracing area by described second service base station;
When described first tracing area and described second tracing area are same tracing area, the first tracing area management entity that then described first tracing area is corresponding and described second tracing area management entity are same tracing area management entity, and described data and/or signaling are sent to described first tracing area management entity by described core net or described second service base station;
Described data and/or signaling, according to the path handover request sent from described second service base station received, are sent to described second service base station or described core net by described first tracing area management entity.
6. the changing method based on tracking area change according to claim 5, is characterized in that, also comprise:
When described first tracing area and described second tracing area are different tracing area, described first tracing area management entity and described second tracing area management entity are different tracing area management entities, the described path handover request from described second service base station received is sent to described core net by described second tracing area management entity, be the connection of the foundation of described second service base station and described second tracing area management entity according to described path handover request for described core net, to be realized the mutual of data between described second service base station and described core net and/or signaling by described second tracing management entity.
7., based on a switching device shifter for tracking area change, it is characterized in that, comprising:
Judging unit, when the serving BS be connected with terminal is switched to second service base station from first service base station, judge whether the first tracing area belonging to described first service base station and the second tracing area belonging to described second service base station are same tracing area;
Processing unit, when described first tracing area and described second tracing area are same tracing area, control described second service base station not transmit path handover request to core net, and destination path is set up in described first tracing area, realize the mutual of data between described core net and/or signaling to make described second service base station by described destination path.
8. according to claim 7 based on tracking area change switching device shifter, it is characterized in that, described judging unit also for:
Judge described first service base station, between described second service base station and described core net, whether there is tracing area management entity;
Described processing unit also for:
When for there is not described tracing area management entity in judged result, directly between described first service base station and described second service base station, set up destination path, described data and/or the signaling of the transmission of described core net is received by described first service base station, and described data and/or signaling are forwarded to described second service base station by described destination path, and received described data and/or the signaling of the transmission of described second service base station by described first service base station, and be forwarded to described core net by described destination path.
9. the switching device shifter based on tracking area change according to claim 8, is characterized in that, also comprise:
Transmitting element, when judged result is for existing described tracing area management entity, controls described second service base station and described path handover request being sent to the second tracing area management entity corresponding to described second tracing area;
Described processing unit also for:
When described first tracing area and described second tracing area are same tracing area, the first tracing area management entity that then described first tracing area is corresponding and described second tracing area management entity are same tracing area management entity, control described core net or described data and/or signaling are sent to described first tracing area management entity by described second service base station, and
Control described first tracing area management entity according to the path handover request sent from described second service base station received, described data and/or signaling are sent to described second service base station or described core net.
10. according to claim 9 based on tracking area change switching device shifter, it is characterized in that, described processing unit also for:
When described first tracing area and described second tracing area are different tracing area, described first tracing area management entity and described second tracing area management entity are different tracing area management entities, control described second tracing area management entity and the described path handover request from described second service base station received is sent to described core net, be the connection of the foundation of described second service base station and described second tracing management entity according to described path handover request for described core net, to be realized the mutual of data between described second service base station and described core net and/or signaling by described second tracing management entity.
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