CN104363621B - Switching method and apparatus based on tracking area variation - Google Patents
Switching method and apparatus based on tracking area variation Download PDFInfo
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- CN104363621B CN104363621B CN201410650154.5A CN201410650154A CN104363621B CN 104363621 B CN104363621 B CN 104363621B CN 201410650154 A CN201410650154 A CN 201410650154A CN 104363621 B CN104363621 B CN 104363621B
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- tracing area
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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
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Abstract
The present invention provides a kind of switching methods based on tracking area variation, including：When the serving BS being connect with terminal is switched to second service base station from first service base station, judge whether the second tracing area belonging to the first tracing area and second service base station belonging to first service base station is same tracing area；When the first tracing area and the second tracing area are same tracing area, transmitting path does not handover request to core net for control second service base station, and destination path is established in the first tracing area, so that second service base station realizes the interaction of the data and/or signaling between the core net by destination path.Correspondingly, the present invention also provides a kind of tracing area management entities and a kind of switching device based on tracking area variation.Technical solution through the invention, it is possible to reduce the problem of the huge signaling overheads that user's frequent switching is brought to core net in super-intensive network, to improve the runnability of core net.
Description
Technical field
The present invention relates to cell handoff technique fields, are based in particular to a kind of tracing area management entity, one kind
The switching method of tracking area variation and a kind of switching device based on tracking area variation.
Background technology
3GPP is in order to improve the network capacity in dense traffic type region, subordinate small cell.And in certain hot zones
Domain, such as stadium, market, cinema, exhibition center place, often will appear extremely large amount of business demand, in this way in this area
Domain needs to dispose very more small cell, that is, present super-intensive network (UDN, Ultra Dense Network).
High-end user mobile for legacy user's either low speed and that carrier wave polymerization cannot be done or be bi-directionally connected, only
Small cell can individually be connected.And this user is in super-intensive network when moving, because small cell coverage areas are small,
So even low-speed mobile users also frequently can be moved to another small cell from a small cell, frequency is brought
Numerous switching.Based on traditional switching flow, as long as shown in Figure 1, the PCI of user's serving cell in connection status
(Physical Cell ID, Physical Cell Identifier) changes, and will switch, switching complete when need target BS with
Signaling and data interaction are carried out between core net (i.e. mobility management entity and gateway), to realize the upper layer of core-network side
Path switches, the 8th, 9 and 10 step as shown in Figure 1.That is target BS needs to inform core net, later about the switching
The data and signaling of user all by being interacted between the target BS and core net, rather than are handed over original serving BS
Mutually.
So, upper layer path here exchanges the signaling overheads that will increase S1 interfaces between base station and core net.
The defect of existing scheme is：
Because in super-intensive network, small cell are more, coverage area is small, and user is also more, then each user often changes
Small cell can occur once to switch.This switches each time is required between base station and core net handing over by S1 interfaces
It is mutually primary, S1 interface signaling loads certainly will be made to sharply increase in this way, it is possible to so that core net can not work normally.Namely
The shortcomings that saying existing scheme is the anchor point switched in core net, so that core network signalling load increases.
Therefore a kind of new technical solution is needed, it is possible to reduce user's frequent switching is brought to core net in super-intensive network
Huge signaling overheads the problem of, to improve the runnability of core net.
Invention content
The present invention is based on the above problem, it is proposed that a kind of new technical solution, it is possible to reduce used in super-intensive network
The problem of huge signaling overheads that family frequent switching is brought to core net, to improve the runnability of core net.
In view of this, the present invention proposes a kind of tracing area management entity, the tracing area management entity setting exists
Belong between multiple serving BSs of same tracing area and core net, or be arranged in macro cell base station, for manage or
Distribute the cooperation between data/or signaling and the management cell in the tracing area.
In the technical scheme, tracing area can be arranged in the multiple serving BSs and core for belonging to same tracing area
Between net, it can also be arranged in macro cell base station.To manage or distribute the data and/or signaling in tracing area, also may be used
To manage the cooperation between cell, such as the combined dispatching etc. of CoMP.
In the above-mentioned technical solutions, it is preferable that the tracing area of the tracing area management entity management is one
All cells under macrocell coverage area or the part cell under a macrocell coverage area or multiple macrocells cover
Some or all cells under lid range.
According to another aspect of the present invention, a kind of switching method changed based on tracking area is additionally provided, including：When with end
When the serving BS of end connection is switched to second service base station from first service base station, judge belonging to the first service base station
Whether the second tracing area belonging to the first tracing area and the second service base station is same tracing area；Described first
When tracing area and second tracing area are same tracing area, controlling the second service base station, transmitting path does not switch
Request establishes destination path to core net in first tracing area, so that the second service base station is described in
Destination path realizes the interaction of data and/or signaling between the core net.
In the technical scheme, it is according to whether two serving BSs switched over are in judgement in same tracing area
It is no to send upper layer path switching request to core net to switch upper layer path.Specifically, two serving BSs be in it is same with
When in track region, upper layer path switching request is not sent, when two serving BSs are in different tracing areas, sends upper layer
Path trace is asked, in this way, it is possible to reduce the internetwork user of super-intensive is switched to the signaling overheads that core net is brought, and improves core
The runnability of heart net.
In the above-mentioned technical solutions, it is preferable that further include：Judge the first service base station, the second service base station
It whether there is tracing area management entity between the core net；It is that there is no tracing area management is real in judging result
When body, destination path directly is established between the first service base station and the second service base station, by the first service
Base station receives the data and/or signaling that the core net is sent, and the data and/or signaling are passed through the target road
Diameter is forwarded to the second service base station, and is received described in the second service base station transmission by the first service base station
Data and/or signaling, and the core net is forwarded to by the destination path.
In the technical scheme, it when there is no tracing area management entity, is directly taken in first service base station and second
Destination path is directly established in business base station, so that when being switched to second service base station from first service base station, does not send upper layer
Path handovers request to core net, and core net continues to send data to first service base station, then is sent by first service base station
To second service base station, in this way, it is possible to reduce the internetwork user of super-intensive is switched to the signaling overheads that core net is brought, and improves
The runnability of core net.
Specifically, the destination path established between first service base station and second service base station can be direct link,
Indirect link can be established using other serving BSs as transfer.
In the above-mentioned technical solutions, it is preferable that further include：It is that there are the tracing area management entities in judging result
When, the path switching request is sent to corresponding second tracing area of second tracing area by the second service base station
Management entity；When first tracing area and second tracing area are same tracing area, then first tracking
The corresponding first tracing area management entity in region and the second tracing area management entity are that the management of same tracing area is real
The data and/or signaling are sent to the first tracing area management by body, the core net or the second service base station
Entity；The first tracing area management entity is asked according to the path switching sent from the second service base station received
It asks, the data and/or signaling is sent to the second service base station or the core net.
In the technical scheme, when there are tracing area management entity, judge that switch over two serving BSs are
No to be in the same tracing area, the corresponding same tracing area management entity need not be sent when the determination result is yes
Layer path handovers request to core net, directly receives core net or the data of serving BS transmission by tracing area management entity
And/or signaling, and corresponding distribution is carried out, so that the base station switching in same tracing area does not need core net and carries out path
Distribution, is switched to the signaling overheads that core net is brought to reduce the internetwork user of super-intensive, improves the maneuverability of core net
Energy.
In the above-mentioned technical solutions, it is preferable that further include：It is in first tracing area and second tracing area
When different tracing areas, the first tracing area management entity and the second tracing area management entity are different tracking
District management entity, the path from the second service base station that the second tracing area management entity will receive
Switching request is sent to the core net, so that the core net is the second service base station according to the path switching request
The connection with the second tracing management entity is established, the second service base is realized to pass through the second tracing management entity
The interaction of the data and/or signaling stood between the core net.
In the technical scheme, when two serving BSs switched over belong to different tracing area management entities,
Then tracing area management entity needs path switching request carrying out upper hair, core net is sent to, by core net in second service
Connection is established between the corresponding second tracing area management entity in base station, to realize the interaction of data and/or signaling.
In accordance with a further aspect of the present invention, a kind of switching device changed based on tracking area is additionally provided, including：Judge single
Member judges the first service when the serving BS being connect with terminal is switched to second service base station from first service base station
Whether the second tracing area belonging to the first tracing area and the second service base station belonging to base station is same tracing area；
Processing unit, when first tracing area and second tracing area are same tracing area, control second clothes
Transmitting path does not handover request to core net for business base station, and establishes destination path in first tracing area, so that described
The interaction of the data and/or signaling between the core net is realized by the destination path in second service base station.
In the technical scheme, it is according to whether two serving BSs switched over are in judgement in same tracing area
It is no to send upper layer path switching request to core net to switch upper layer path.Specifically, two serving BSs be in it is same with
When in track region, upper layer path switching request is not sent, when two serving BSs are in different tracing areas, sends upper layer
Path trace is asked, in this way, it is possible to reduce the internetwork user of super-intensive is switched to the signaling overheads that core net is brought, and improves core
The runnability of heart net.
In the above-mentioned technical solutions, it is preferable that the judging unit is additionally operable to：Judge the first service base station, described
It whether there is tracing area management entity between second service base station and the core net；The processing unit is additionally operable to：Sentencing
Disconnected result is there is no when the tracing area management entity, directly in the first service base station and the second service base station
Between establish destination path, the data and/or signaling that the core net is sent are received by the first service base station, and will
The data and/or signaling are forwarded to the second service base station by the destination path, and by the first service base
It stands and receives the data and/or signaling that the second service base station is sent, and the core is forwarded to by the destination path
Heart net.
In the technical scheme, it when there is no tracing area management entity, is directly taken in first service base station and second
Destination path is directly established in business base station, so that when being switched to second service base station from first service base station, does not send upper layer
Path handovers request to core net, and core net continues to send data to first service base station, then is sent by first service base station
To second service base station, in this way, it is possible to reduce the internetwork user of super-intensive is switched to the signaling overheads that core net is brought, and improves
The runnability of core net.
Specifically, the destination path established between first service base station and second service base station can be direct link,
Indirect link can be established using other serving BSs as transfer.
In the above-mentioned technical solutions, it is preferable that further include：Transmission unit is that there are the tracing areas in judging result
When management entity, controlling the second service base station, that the path switching request is sent to second tracing area is corresponding
Second tracing area management entity；The processing unit is additionally operable to：In first tracing area and second tracing area
For same tracing area when, then the corresponding first tracing area management entity of first tracing area and second tracking area
Domain management entity is same tracing area management entity, controls the core net or the second service base station by the data
And/or signaling is sent to the first tracing area management entity, and control the first tracing area management entity according to
The data and/or signaling are sent to described by the path switching request sent from the second service base station received
Second service base station or the core net.
In the technical scheme, when there are tracing area management entity, judge that switch over two serving BSs are
No to be in the same tracing area, the corresponding same tracing area management entity need not be sent when the determination result is yes
Layer path handovers request to core net, directly receives core net or the data of serving BS transmission by tracing area management entity
And/or signaling, and corresponding distribution is carried out, so that the base station switching in same tracing area does not need core net and carries out path
Distribution, is switched to the signaling overheads that core net is brought to reduce the internetwork user of super-intensive, improves the maneuverability of core net
Energy.
In the above-mentioned technical solutions, it is preferable that the processing unit is additionally operable to：In first tracing area and described
When two tracing areas are different tracing areas, the first tracing area management entity and the second tracing area management entity
For different tracing area management entities, what control the second tracing area management entity will receive takes from described second
The path switching request of business base station is sent to the core net, so that the core net is according to the path switching request
The second service base station is established and the connection of the second tracing management entity, to pass through the second tracing management entity reality
The interaction of existing data and/or signaling between the second service base station and the core net.
In the technical scheme, when two serving BSs switched over belong to different tracing area management entities,
Then tracing area management entity needs path switching request carrying out upper hair, is sent to core net, is established and second by core net
Connection between the corresponding second tracing area management entity of serving BS, to realize the interaction of data and/or signaling.
By above technical scheme, core is terminated in by limiting the anchor point switched between different community under same tracing area
Heart net base station below or tracing area management entity so that when user switches between same tracing area different community, move
Mobility management entity/gateway is not involved in hand off signaling interaction, and just thinks user's switching and be happened under different tracing areas
When between cell, mobility management entity/gateway just participates in the Signalling exchange of upper layer path switching.Due to a tracking area
Domain can cover many cells, so present invention substantially reduces user's frequent switchings in super-intensive network to be brought to core net
Huge signaling overheads so that core net runnability improve.
Description of the drawings
Fig. 1 shows serving BS switching flow schematic diagram in the related technology；
Fig. 2 shows the flow charts of the switching method according to an embodiment of the invention based on tracking area variation；
Fig. 3 shows the block diagram of the switching device according to an embodiment of the invention changed based on tracking area；
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 schematic diagram of tracing area management management entity according to an embodiment of the invention.
Specific implementation mode
To better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real
Mode is applied the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
To be implemented different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 2 shows the flow charts of the switching method according to an embodiment of the invention based on tracking area variation.
As shown in Fig. 2, the switching method according to an embodiment of the invention based on tracking area variation, including：Step 202,
When the serving BS being connect with terminal is switched to second service base station from first service base station, the first service base station is judged
Whether the second tracing area belonging to the first affiliated tracing area and the second service base station is same tracing area；Step
204, when first tracing area and second tracing area are same tracing area, control the second service base station
Transmitting path does not handover request to core net, and establishes destination path in first tracing area, so that second clothes
The interaction of data and/or signaling between the core net is realized by the destination path in business base station.
In the technical scheme, it is according to whether two serving BSs switched over are in judgement in same tracing area
It is no to send upper layer path switching request to core net to switch upper layer path.Specifically, two serving BSs be in it is same with
When in track region, upper layer path switching request is not sent, when two serving BSs are in different tracing areas, sends upper layer
Path trace is asked, in this way, it is possible to reduce the internetwork user of super-intensive is switched to the signaling overheads that core net is brought, and improves core
The runnability of heart net.
In the above-mentioned technical solutions, it is preferable that further include：Judge the first service base station, the second service base station
It whether there is tracing area management entity between the core net；It is that there is no tracing area management is real in judging result
When body, destination path directly is established between the first service base station and the second service base station, by the first service
Base station receives the data and/or signaling that the core net is sent, and the data and/or signaling are passed through the target road
Diameter is forwarded to the second service base station, and is received described in the second service base station transmission by the first service base station
Data and/or signaling, and the core net is forwarded to by the destination path.
In the technical scheme, it when there is no tracing area management entity, is directly taken in first service base station and second
Destination path is directly established in business base station, so that when being switched to second service base station from first service base station, does not send upper layer
Path handovers request to core net, and core net continues to send data to first service base station, then is sent by first service base station
To second service base station, in this way, it is possible to reduce the internetwork user of super-intensive is switched to the signaling overheads that core net is brought, and improves
The runnability of core net.
Specifically, the destination path established between first service base station and second service base station can be direct link,
Indirect link can be established using other serving BSs as transfer.
In the above-mentioned technical solutions, it is preferable that further include：It is that there are the tracing area management entities in judging result
When, the path switching request is sent to corresponding second tracing area of second tracing area by the second service base station
Management entity；When first tracing area and second tracing area are same tracing area, then first tracking
The corresponding first tracing area management entity in region and the second tracing area management entity are that the management of same tracing area is real
The data and/or signaling are sent to the first tracing area management by body, the core net or the second service base station
Entity；The first tracing area management entity is asked according to the path switching sent from the second service base station received
It asks, the data and/or signaling is sent to the second service base station or the core net.
In the technical scheme, when there are tracing area management entity, judge that switch over two serving BSs are
No to be in the same tracing area, the corresponding same tracing area management entity need not be sent when the determination result is yes
Layer path handovers request to core net, directly receives core net or the data of serving BS transmission by tracing area management entity
And/or signaling, and corresponding distribution is carried out, so that the base station switching in same tracing area does not need core net and carries out path
Distribution, is switched to the signaling overheads that core net is brought to reduce the internetwork user of super-intensive, improves the maneuverability of core net
Energy.
In the above-mentioned technical solutions, it is preferable that further include：It is in first tracing area and second tracing area
When different tracing areas, the first tracing area management entity and the second tracing area management entity are different tracking
District management entity, the path from the second service base station that the second tracing area management entity will receive
Switching request is sent to the core net, so that the core net is the second service base station according to the path switching request
The connection with the second tracing management entity is established, the second service base is realized to pass through the second tracing management entity
The interaction of the data and/or signaling stood between the core net.
In the technical scheme, when two serving BSs switched over belong to different tracing area management entities,
Then tracing area management entity needs path switching request carrying out upper hair, is sent to core net, is established and second by core net
Connection between the corresponding second tracing area management entity of serving BS, to realize the interaction of data and/or signaling.
Fig. 3 shows the block diagram of the switching device according to an embodiment of the invention changed based on tracking area.
As shown in figure 3, the switching device 300 according to an embodiment of the invention based on tracking area variation, including：Judge single
Member 302 judges first clothes when the serving BS being connect with terminal is switched to second service base station from first service base station
Whether the first tracing area belonging to business base station and the second tracing area belonging to the second service base station are same tracking area
Domain；Processing unit 304, when first tracing area and second tracing area are same tracing area, described in control
Transmitting path does not handover request to core net for second service base station, and establishes destination path in first tracing area, with
Make the interaction for the data and/or signaling that the second service base station realized by the destination path between the core net.
In the technical scheme, it is according to whether two serving BSs switched over are in judgement in same tracing area
It is no to send upper layer path switching request to core net to switch upper layer path.Specifically, two serving BSs be in it is same with
When in track region, upper layer path switching request is not sent, when two serving BSs are in different tracing areas, sends upper layer
Path trace is asked, in this way, it is possible to reduce the internetwork user of super-intensive is switched to the signaling overheads that core net is brought, and improves core
The runnability of heart net.
In the above-mentioned technical solutions, it is preferable that the judging unit 302 is additionally operable to：Judge the first service base station, institute
It states and whether there is tracing area management entity between second service base station and the core net；The processing unit 304 is additionally operable to：
It is there is no when the tracing area management entity, directly in the first service base station and the second service in judging result
Destination path is established between base station, and the data and/or signaling that the core net is sent are received by the first service base station,
And the data and/or signaling are forwarded to the second service base station by the destination path, and taken by described first
Business base station receives the data and/or signaling that the second service base station is sent, and is forwarded to institute by the destination path
State core net.
In the technical scheme, it when there is no tracing area management entity, is directly taken in first service base station and second
Destination path is directly established in business base station, so that when being switched to second service base station from first service base station, does not send upper layer
Path handovers request to core net, and core net continues to send data to first service base station, then is sent by first service base station
To second service base station, in this way, it is possible to reduce the internetwork user of super-intensive is switched to the signaling overheads that core net is brought, and improves
The runnability of core net.
Specifically, the destination path established between first service base station and second service base station can be direct link,
Indirect link can be established using other serving BSs as transfer.
In the above-mentioned technical solutions, it is preferable that further include：Transmission unit 306 is that there are the tracking areas in judging result
When the management entity of domain, controls the second service base station and the path switching request is sent to the second tracing area correspondence
The second tracing area management entity；The processing unit 304 is additionally operable to：In first tracing area and second tracking
Region be same tracing area when, then the corresponding first tracing area management entity of first tracing area and described second with
Track district management entity is same tracing area management entity, controls the core net or the second service base station by the number
According to and/or signaling be sent to the first tracing area management entity, and control the first tracing area management entity root
According to the path switching request sent from the second service base station received, the data and/or signaling are sent to institute
State second service base station or the core net.
In the technical scheme, when there are tracing area management entity, judge that switch over two serving BSs are
No to be in the same tracing area, the corresponding same tracing area management entity need not be sent when the determination result is yes
Layer path handovers request to core net, directly receives core net or the data of serving BS transmission by tracing area management entity
And/or signaling, and corresponding distribution is carried out, so that the base station switching in same tracing area does not need core net and carries out path
Distribution, is switched to the signaling overheads that core net is brought to reduce the internetwork user of super-intensive, improves the maneuverability of core net
Energy.
In the above-mentioned technical solutions, it is preferable that the processing unit 304 is additionally operable to：In first tracing area and institute
When to state the second tracing area be different tracing areas, the first tracing area management entity and the second tracing area management
Entity is different tracing area management entity, control that the second tracing area management entity will receive from described the
The path switching request of two serving BSs is sent to the core net, so that the core net is asked according to path switching
The connection for second service base station foundation and the second tracing management entity is asked, to pass through second tracing management reality
Body realizes the interaction of data and/or signaling between the second service base station and the core net.
In the technical scheme, when two serving BSs switched over belong to different tracing area management entities,
Then tracing area management entity needs path switching request carrying out upper hair, is sent to core net, is established and second by core net
Connection between the corresponding second tracing area management entity of serving BS, to realize the interaction of data and/or signaling.
With reference to Fig. 4 to Fig. 8 technical solutions that the present invention will be described in detail.
The first scheme be based on the constant situation of network structure, it is specific as follows：
As shown in Figure 1, user, after sending handover measurement report, serving BS can be based on handover measurement report and select time
The target BS of choosing, and send switching request to candidate target base station.The present invention proposes that serving BS institute is added in switching request
Tracing area number, that is to say, that serving BS needs the tracing area number of oneself informing candidate by switching request
Target BS (i.e. the 3rd step in Fig. 1).
Candidate target base station is according to conventional method, after receiving switching request, is accessed according to switching user demand
Control is fed back switching request and is successfully replied if switched successfully.
After the successful connection of user and target BS, i.e. after the 7th step success in Fig. 1, it is not immediately performed in figure
8th step：Upper layer path switching request.But the method based on this programme, target BS first judge the tracing area of serving BS
Whether number is identical with the tracing area number of oneself, if it is different, then executing the 8th step；If identical, the 8th step is not executed,
Namely the 8th, 9 and 10 step does not execute.
When constant due to tracing area number, target BS does not ask the variation of upper layer path, then the data of user
Or serving BS is sent to based on original path, data and signaling related to user so are just required for by servicing base
Station is transmitted to target BS.
The method that target BS is transmitted to for serving BS：Because when tradition switching, when switching execution, just have
The process of data forwarding.To downlink data, has been issued to user such as serving BS but also confiscate the reception success of user feedback
Data packet or serving BS sent not yet to user but have arrived at the data packet of serving BS, these
Data packet all can be sent to target BS by the interface between serving BS and target BS.And method proposed by the present invention
In, core net also will continue to send the data to serving BS after the handover, and serving BS forwards the data to target BS.
If 1) have directly ideal backhaul link or direct X2 interface, clothes between serving BS and target BS
Business base station directly sends the data to target BS by ideal backhaul link or X2 interface, as shown in Figure 4.
With the movement of user, user may be switched to base station #2 from initial base station #1 and be switched to base station #3 to be switched to again
Base station #4, but user data and signaling are all sent to base station #1 by mobility management entity/gateway always.If these
Data are intended to be directly forwarded to current serving BS by base station #1, and such as present serving BS is base station #4, then needing
Information of the base station #3 signals bases #4 about base station #1, it is also desirable to which information of the base station #3 signals bases #1 about base station #4 is convenient for
Link between base station #1 and base station #4 foundation.And the information of base station #1 should be by base station #2 signals bases #3 before
, go down repeatedly, as shown in Figure 5 and Figure 6.
If 2) intermediate without directly ideal backhaul link or X2 interface between serving BS and target BS
It also needs to other base stations and does transfer.For example data are transmitted to adjacent base station #3 by serving BS #1 and are transmitted to target BS #2, such as Fig. 7 again
It is shown.
Second scheme is in existing network structure, and between base station and core net plus a tracing area management is real
Body, it is specific as follows：
All, and the function of the entity is main for the tracing area number of cell under a tracing area management entity
It is the data and signaling of the user for managing and distributing cell in its area under control domain, as shown in Figure 8：
1) tracing area management entity is set on base station, under core net.Tracing area can certainly be managed
Entity setting up manages the cooperation between cell, such as the combined dispatching etc. of CoMP in macro cell base station.Tracing area management is real
The tracing area of body management is all cells under a macrocell coverage area or the portion under a macrocell coverage area
Divide some or all cells under cell or multiple macrocell coverage areas.
2) there is interface between different tracing area management entities to carry out data and Signalling exchange.
3) there are direct or indirect X2 interface or ideal backhaul link between the different community under same tracing area.
4) there are direct or indirect X2 interface or ideal backhaul link between the different community under different tracing areas.
Based on the network structure that Fig. 8 is provided, the present invention proposes to be happened under same tracing area management entity when switching
Different community when, switching anchor point terminate in tracing area management entity.Such as when user sends out between base station #1 and base station #2
When raw switching, after switching flow conventionally completes the step of front 7, in step 8, target BS is to tracing area management
Entity #1 sends upper layer path switching request.In step 9, tracing area management entity #1 record data and the signaling of the user with
After be forwarded to target BS #2, in step 10, tracing area management entity #1 has switched to target BS feedback upper layer path
At.And mobility management entity/gateway is not involved in its handoff procedure, and it is real only to know that the user also manages in tracing area
In the compass of competency of body #1.
Based on the network structure that Fig. 8 is provided, the present invention proposes to be happened under different tracing area management entities when switching
Different community when, switching anchor point terminate in mobility management entity/gateway on tracing area management entity.Such as
When user is switched to base station #3 from base station #2, after user completes the random access procedure with target BS #3, target BS #
3 can send upper layer path switching request to tracing area management entity #2.After tracing area management entity #2 receives request, record
The user information, and the data and signaling after remembeing about the user are forwarded to base station #3.Meanwhile tracing area management is real
Body #2 sends upper layer path switching request to mobility management entity/gateway.Mobility management entity/gateway receives
After request, the user information is recorded, and the data and signaling after remembeing about the user all issue tracing area management entity #
2, rather than original tracing area management entity #1.In this case, mobility management entity/gateway, which takes part in, cuts
Process is changed, but only knows the user in the compass of competency of tracing area management entity #2, but does not know it is in base station #3
Or base station #4.
Technical scheme of the present invention is described in detail above in association with attached drawing, technical solution through the invention passes through limitation
The anchor point switched between different community under same tracing area terminates in core net base station below or tracing area management is real
Body so that when user switches between same tracing area different community, mobility management entity/gateway is not involved in switching letter
When enabling interaction, and just thinking that user's switching is happened between the cell under different tracing areas, mobility management entity/gateway
Just participate in the Signalling exchange of upper layer path switching.Since a tracing area can cover many cells, so the present invention is big
Reduce the huge signaling overheads that user's frequent switching is brought to core net in super-intensive network greatly so that core net maneuverability
It can improve.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of switching method based on tracking area variation, which is characterized in that including：
When the serving BS being connect with terminal is switched to second service base station from first service base station, the first service is judged
Whether the second tracing area belonging to the first tracing area and the second service base station belonging to base station is same tracing area；
When first tracing area and second tracing area are same tracing area, the second service base station is controlled
Transmitting path does not handover request to core net, and establishes destination path in first tracing area, so that second clothes
The interaction of data and/or signaling between the core net is realized by the destination path in business base station；
Further include：
Judge to whether there is tracing area management between the first service base station, the second service base station and the core net
Entity；
It is there is no when the tracing area management entity, directly in the first service base station and described second in judging result
Destination path is established between serving BS, by the first service base station receive data that the core net is sent and/or
Signaling, and the data and/or signaling are forwarded to the second service base station by the destination path, and by described
One serving BS receives the data and/or signaling that the second service base station is sent, and is forwarded by the destination path
To the core net.
2. the switching method according to claim 1 based on tracking area variation, which is characterized in that
The tracing area management entity is arranged on the serving BS, under the core net, or is arranged in macrocell
On base station, the tracing area management entity management and distribute cell in its tracing area user data and signaling,
The tracing area of the tracing area management entity management is that all cells under macrocell coverage area or one are macro
Some or all cells under part cell or multiple macrocell coverage areas under cell coverage area.
3. the switching method according to claim 1 based on tracking area variation, which is characterized in that further include：
It is there are when the tracing area management entity in judging result, the second service base station is by the path switching request
It is sent to the corresponding second tracing area management entity of second tracing area；
When first tracing area and second tracing area are same tracing area, then first tracing area pair
The the first tracing area management entity and the second tracing area management entity answered are same tracing area management entity, described
The data and/or signaling are sent to the first tracing area management entity by core net or the second service base station；
The first tracing area management entity is asked according to the path switching sent from the second service base station received
It asks, the data and/or signaling is sent to the second service base station or the core net.
4. the switching method according to claim 3 based on tracking area variation, which is characterized in that further include：
When first tracing area and second tracing area are different tracing areas, the first tracing area management
Entity and the second tracing area management entity are different tracing area management entities, and the second tracing area management is real
The path switching request from the second service base station received is sent to the core net by body, for the core
Heart net is according to the company that the path switching request is second service base station foundation and the second tracing area management entity
Connect, with realized by the second tracing management entity data between the second service base station and the core net and/or
The interaction of signaling.
5. a kind of switching device based on tracking area variation, which is characterized in that including：
Judging unit judges institute when the serving BS being connect with terminal is switched to second service base station from first service base station
State whether the first tracing area belonging to first service base station and the second tracing area belonging to the second service base station are same
One tracing area；
Processing unit, when first tracing area and second tracing area are same tracing area, control described the
Transmitting path does not handover request to core net to two serving BSs, and establishes destination path in first tracing area, so that
The interaction of the data and/or signaling between the core net is realized by the destination path in the second service base station；
The judging unit is additionally operable to：
Judge to whether there is tracing area management between the first service base station, the second service base station and the core net
Entity；
The processing unit is additionally operable to：
It is there is no when the tracing area management entity, directly in the first service base station and described second in judging result
Destination path is established between serving BS, by the first service base station receive data that the core net is sent and/or
Signaling, and the data and/or signaling are forwarded to the second service base station by the destination path, and by described
One serving BS receives the data and/or signaling that the second service base station is sent, and is forwarded by the destination path
To the core net.
6. the switching device according to claim 5 based on tracking area variation, which is characterized in that
The tracing area management entity is arranged on the serving BS, under the core net, or is arranged in macrocell
On base station, the tracing area management entity management and distribute cell in its tracing area user data and signaling,
The tracing area of the tracing area management entity management is that all cells under macrocell coverage area or one are macro
Some or all cells under part cell or multiple macrocell coverage areas under cell coverage area.
7. the switching device according to claim 5 based on tracking area variation, which is characterized in that further include：
Transmission unit is that there are when the tracing area management entity, control the second service base station by institute in judging result
It states path switching request and is sent to the corresponding second tracing area management entity of second tracing area；
The processing unit is additionally operable to：
When first tracing area and second tracing area are same tracing area, then first tracing area pair
The the first tracing area management entity and the second tracing area management entity answered are same tracing area management entity, control
The data and/or signaling are sent to first tracing area and managed in fact by the core net or the second service base station
Body, and
The first tracing area management entity is controlled to be cut according to the path sent from the second service base station received
Request is changed, the data and/or signaling are sent to the second service base station or the core net.
8. the switching device according to claim 7 based on tracking area variation, which is characterized in that the processing unit is also used
In：
When first tracing area and second tracing area are different tracing areas, the first tracing area management
Entity and the second tracing area management entity are different tracing area management entities, control the second tracing area pipe
The path switching request from the second service base station received is sent to the core net by reason entity, for institute
Core net is stated according to the company that the path switching request is second service base station foundation and the second tracing management entity
Connect, with realized by the second tracing management entity data between the second service base station and the core net and/or
The interaction of signaling.
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| CN201410650154.5A CN104363621B (en) | 2014-11-14 | 2014-11-14 | Switching method and apparatus based on tracking area variation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3337237B1 (en) * | 2015-12-31 | 2021-06-16 | Huawei Technologies Co., Ltd. | Switching method and device in ultra-dense network |
| EP3474593B1 (en) * | 2016-06-21 | 2021-08-11 | Huawei Technologies Co., Ltd. | Efficient random access |
| WO2019041142A1 (en) * | 2017-08-29 | 2019-03-07 | Oppo广东移动通信有限公司 | Path switching method and base station |
| CN111757556B (en) * | 2019-03-29 | 2022-12-27 | 华为技术有限公司 | Data transmission method and device |
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| CN101035308A (en) * | 2006-03-09 | 2007-09-12 | 华为技术有限公司 | Radio communication system and mobility management method |
| CN101047977A (en) * | 2006-03-27 | 2007-10-03 | 华为技术有限公司 | Radio communication system and method and call method used in the system |
| CN101796857A (en) * | 2007-08-31 | 2010-08-04 | 松下电器产业株式会社 | Radio communication terminal, radio communication base station device, and radio communication method |
| CN102685862A (en) * | 2009-03-12 | 2012-09-19 | 华为技术有限公司 | Power saving activation method and device |
| CN103220653A (en) * | 2012-01-18 | 2013-07-24 | 中兴通讯股份有限公司 | Method and device for configurating track area and updating locations of mobile relay |
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|---|---|---|---|---|
| CN101035308A (en) * | 2006-03-09 | 2007-09-12 | 华为技术有限公司 | Radio communication system and mobility management method |
| CN101047977A (en) * | 2006-03-27 | 2007-10-03 | 华为技术有限公司 | Radio communication system and method and call method used in the system |
| CN101796857A (en) * | 2007-08-31 | 2010-08-04 | 松下电器产业株式会社 | Radio communication terminal, radio communication base station device, and radio communication method |
| CN102685862A (en) * | 2009-03-12 | 2012-09-19 | 华为技术有限公司 | Power saving activation method and device |
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