CN103249099B

CN103249099B - The method that terminal switches between bunch group, base station and communication system

Info

Publication number: CN103249099B
Application number: CN201310157699.8A
Authority: CN
Inventors: 赵婷婷; 孙雷; 吕召彪; 王健全
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2013-05-02
Filing date: 2013-05-02
Publication date: 2015-09-16
Anticipated expiration: 2033-05-02
Also published as: CN103249099A

Abstract

The invention provides a kind of method that terminal switches between bunch group, base station and communication system.The present invention is by arranging base station in public bunch that belongs to two bunches of groups in a communication network, when in terminal is for public bunch from this, base station switches to the base station in another bunch of affiliated group, in public bunch, Base Station Identification corresponding for terminal iidentification described in bunch ownership list and public identifier are replaced by base station, and Base Station Identification corresponding for terminal iidentification described in home base stations list and public identifier are all replaced by the cluster head base station of two bunches of groups in this public bunch belonging to base station.Now, for described terminal, in described public bunch, base station is divided to handover-target base station place bunch group from former bunch of group.The cluster head base station of handover-target base station can adopt the interior handoff procedure of bunch group to complete the switching of described terminal.The present invention reduces the signalings forwarded by cluster head base station a large amount of in prior art, simplify the process switched between terminal bunch group, avoid handover delay and switch the risk of call drop.

Description

The method that terminal switches between bunch group, base station and communication system

Technical field

The present invention relates to wireless communication technology, particularly relate to a kind of method that terminal switches between bunch group, base station and communication system.

Background technology

Base station section networking framework comprises multiple bunches of groups and the straight-through control device for each bunch of management and control group.Wherein, each bunch of group is made up of multiple base station, and one of them base station is cluster head base station, and this cluster head base station is used for base station in each bunch of management and control and is connected with the straight-through of cluster head base station, straight-through connection between the cluster head base station of each bunch of group.Base station section networking examples of architectures as shown in Figure 1, comprises base station bunch, base station bunches two and base station bunches three.Base station in a cluster head base station and multiple bunches is included in each base station bunch.The mark of each base station comprise bunch group mark and bunch in mark.In Fig. 1 with two numbers separated with comma that bracket brackets to represent respectively bunch group mark and bunch in mark.Such as: in bunch one the 3rd bunch, base station 5 identifies bunch group mark of several 1 in (Isosorbide-5-Nitrae) before comma for base station 5 in bunch the 3rd bunch, comma below several 4 be in bunch one the 3rd bunch base station 5 bunch in identify.

Example as shown in Figure 1, built vertical communication link between present terminal UEA and terminal UE B, namely base station 5 establishes straight-through connection with base station 7 in bunches 3 the 3rd bunches in bunch one the 3rd bunch.When terminal UE A is for switching, terminal UE A is to base station 5 reporting measurement reports in bunch one the 3rd bunch, current place.Include in described measurement report with described bunch 1 the 3rd bunch in the mark of adjacent all base stations, base station 5 and signal strength signal intensity.If base station 5 switches demand according to the signal strength analysis of base station each in the measurement report received in described bunch 1 the 3rd bunch, determining that terminal UE A switches object base station is base station 6 in base station bunches two first bunch.The handoff procedure of UEA between bunch group, signaling diagram as shown in Figure 2, comprising:

In step S1: bunch one the 3rd bunch, base station 5 sends the first handover request to a bunch cluster headgroup station 8, and described first handover request carries terminal iidentification, the Base Station Identification (2,2) in Base Station Identification (Isosorbide-5-Nitrae) and bunches 2 first bunches in described bunch the 3rd bunch of UEA.

Step S2: bunch cluster headgroup station 8 is according to Base Station Identification (1 in the terminal iidentification of described UEA and described bunch the 3rd bunch, 4), inquire about the terminal iidentification of UEA described in local list accordingly, and the Base Station Identification of the base station be connected with base station direct connection in described bunch the 3rd bunch, i.e. Base Station Identification (3,4) in bunches 3 the 3rd bunches.Described bunch of cluster headgroup station 8 is according to Base Station Identification (2 in described bunch 2 first bunches, 2) bunch group mark, the terminal iidentification carrying described UEA is sent to bunch two cluster head base stations 9, Base Station Identification (1 in bunch one the 3rd bunch, 4), Base Station Identification (2 in bunches 2 first bunches, 2) base station (3 and in bunches 3 the 3rd bunches, 4) the second handover request, to make described bunch two cluster head base stations 9 by the terminal iidentification of described UEA, Base Station Identification (1 in bunch one the 3rd bunch, 4), Base Station Identification (2 in bunches 2 first bunches, 2) base station (3 and in bunches 3 the 3rd bunches, 4) correspondence is buffered in bunch two cluster head base stations, in order to the inquiry in follow-up flow process with call.Simultaneously, described bunch of two cluster head base station 9 are according to Base Station Identification (2 in bunches 2 first bunches, 2) bunch group mark, in described bunch 2 first bunches base station 6 send carry described UEA terminal iidentification and bunch one the 3rd bunch in the 3rd handover request of Base Station Identification (Isosorbide-5-Nitrae).

In step S3: described bunch 1 the 3rd bunch, base station 5 is by the forwarding at described bunch of two cluster head base stations 9 and bunch cluster headgroup station 8, receive the handover request response that base station 6 in described bunch 2 first bunches returns, Base Station Identification (2,2) in the terminal iidentification of UEA and bunches 2 first bunches is carried in the response of described handover request.

After in step S4: described bunch 1 the 3rd bunch, base station 5 receives the response of described handover request, to UEA send carry bunches 2 first bunches in Base Station Identification (2, 2) switching command, with make described UEA according to described switching command disconnect current with bunch one the 3rd bunch in the connection of base station 5, and in UEA disconnection is with described bunch 1 the 3rd bunch after base station 5, UEA is according to Base Station Identification (2 in described bunch 2 first bunches, 2) access request is sent to base station 6 in bunches 2 first bunches, with described bunch 2 first bunches in base station 6 set up RRC(Radio Resource Control, radio resource control) connect, wherein, described access request carries the terminal iidentification of UEA.

Step S5: after the connection establishment success of described UEA, in described bunch 2 first bunches, base station 6 sends the first handover success message to bunch two cluster head base stations 9, described first handover success message carries Base Station Identification (2,2) in the terminal iidentification of UEA and bunches 2 first bunches.

Step S6: described bunch two cluster head base station 9 is according to Base Station Identification (2 in the terminal iidentification of UEA and bunches 2 first bunches, 2), query caching with Base Station Identification (2 in the terminal iidentification of described UEA and bunches 2 first bunches, 2) Base Station Identification (1 in corresponding bunch the 3rd bunch, 4) base station (3,4) and in bunches 3 the 3rd bunches.Described bunch of two cluster head base station 9 are according to Base Station Identification (1 in described in inquiring bunch the 3rd bunch, 4) bunch group mark, send to bunch cluster headgroup station and carry base station (3 in described bunch 3 the 3rd bunches, 4) Base Station Identification (1 and in bunch the 3rd bunch, 4) the second handover success message, to make bunch cluster headgroup station according to Base Station Identification (1 in described bunch the 3rd bunch, 4), in described bunch 1 the 3rd bunch, base station sends the straight-through Connection Release instruction carrying base station (3,4) in described bunch 3 the 3rd bunches.In described bunch 1 the 3rd bunch, base station 5 is according to described straight-through Connection Release instruction, discharges and being straight-throughly connected of having set up between base station 7 in described bunch 3 the 3rd bunch.Simultaneously, described bunch of two cluster head base station 9 are according to base station (3 in described in inquiring bunch 3 the 3rd bunches, 4) bunch group mark, send to bunch three cluster head base stations 10 and carry Base Station Identification (3 in described bunch 3 the 3rd bunches, 4) Base Station Identification (1 and in bunch the 3rd bunch, 4) the second handover success message, to make described bunch three cluster head base stations according to Base Station Identification (3 in described bunch 3 the 3rd bunch, 4), in described bunch 3 the 3rd bunch, base station 7 sends the straight-through Connection Release instruction carrying Base Station Identification (Isosorbide-5-Nitrae) in described bunch the 3rd bunch.In described bunch 3 the 3rd bunch, base station 7 is according to described straight-through Connection Release instruction, discharges and being straight-throughly connected of setting up between base station 5 in described bunch the 3rd bunch.

In step S7: described bunch 1 the 3rd bunch base station 5 release base station 7 in described bunch 3 the 3rd bunch straight-through be connected after, in described bunch 1 the 3rd bunch base station 5 by bunch cluster headgroup station 8 and bunch two cluster head base stations 9 to base station 6 in bunches 2 first bunches send carry described in Base Station Identification (1 in bunch the 3rd bunch, 4) the first straight-through connection establishment request, in described bunch 2 first bunches, base station 6 is according to the described first straight-through connection establishment request, and in described bunch 1 the 3rd bunch, base station 5 returns the first corresponding straight-through connection establishment request-reply.In described bunch 1 the 3rd bunch base station 5 with described bunch 2 first bunches in base station 6 to be direct transferred switch data by the straight-through interface channel set up.

In step S8: described bunch 2 first bunch base station 6 send to described bunch of two cluster head base stations 9 carry UEA terminal iidentification and bunches 2 first bunches in Base Station Identification (2,2) second lead directly to connection establishment request.Described bunch of two cluster head base station 9 are according to Base Station Identification (2 in the terminal iidentification of described UEA and bunches 2 first bunches, 2) inquire about buffer memory in local list with described bunch 2 first bunches in Base Station Identification (2,2) Base Station Identification of corresponding base station, opposite end, i.e. Base Station Identification (3,4) in bunches 3 the 3rd bunches.Described bunch of two cluster head base station 9, according to Base Station Identification (3,4) in described bunch 3 the 3rd bunch, forward the described second straight-through connection establishment request by bunch three cluster head base stations 10 to base station in described bunch 3 the 3rd bunch.

In step S9: described bunch 3 the 3rd bunch, base station 7 is according to the described second straight-through connection establishment request, and in described bunch 2 first bunches, base station 6 returns the second corresponding straight-through connection establishment request-reply.

After base station 6 receives the described second straight-through connection establishment request-reply in step S10: described bunch 2 first bunch, lead directly to described bunch of two cluster head base stations 9 transmissions and be successfully established message.Put-through channel in described bunch 2 first bunches in base station 6 and described bunch 3 the 3rd bunch between base station 7 is successfully established, in described bunch 2 first bunches base station 6 with bunches 3 the 3rd bunches in base station 7 carry out data by the put-through channel be created as and direct transfer.

From above-mentioned steps, based on existing base station section networking framework, the handoff procedure that terminal is switched to target BS from source base station is very complicated, need to carry out the forwarding of a large amount of signalings with mutual by two cluster head base stations, example as shown in Figure 2, signaling reception and the signaling forwarding of four times need be carried out in bunch cluster headgroup station, wherein, described bunch of cluster headgroup station need send twice signaling to bunch two cluster head base stations, and need receive the signaling of twice bunch of two cluster head base stations transmissions.Bunch cluster headgroup station and bunch two cluster head base station signalings repeatedly receive and send, and add the risk of handover delay and switching call drop.

Summary of the invention

The invention provides a kind of method that terminal switches between bunch group, base station and communication system, to reduce the Signalling exchange between cluster head base station, reduce handover delay and switch the risk of call drop.

First aspect of the present invention is to provide a kind of method that terminal switches between bunch group, comprising:

Obtain terminal iidentification, source base station mark and target BS mark;

Inquire about preset home base stations list, if inquire about described target BS mark not in described home base stations list, then inquire about in described home base stations list whether to have identifying corresponding public identifier with described terminal iidentification and described source base station;

If have, and judge that bunch group mark that described public identifier comprises and described target BS identify bunch organizing of comprising and identify identical, then send the displacement instruction carrying described terminal iidentification to described source base station, to make described source base station, source base station mark corresponding for terminal iidentification described in bunch ownership list and public identifier are replaced;

Receive the displacement that described source base station returns and complete information, source base station corresponding for terminal iidentification described in described home base stations list mark and public identifier are replaced, and send to the cluster head base station of target BS the second handover request carrying described terminal iidentification and target BS mark, source base station corresponding for terminal iidentification described in its preset home base stations list mark and public identifier are replaced for making the cluster head base station of described target BS perform by described second handover request, and perform the switching of described terminal in bunch group according to the home base stations list after displacement.

Second aspect of the present invention is to provide a kind of method that terminal switches between bunch group, comprising:

Receive the displacement instruction carrying terminal iidentification that cluster head base station sends;

According to described displacement instruction, source base station mark corresponding for terminal iidentification described in bunch ownership list and public identifier are replaced;

Return displacement to described cluster head base station and complete information, to make described cluster head base station, source base station corresponding for terminal iidentification described in home base stations list mark and public identifier are replaced, and the second handover request carrying described terminal iidentification and target BS mark is sent to the cluster head base station for handover-target base station, source base station corresponding for terminal iidentification described in its preset home base stations list mark and public identifier are replaced for making the cluster head base station of described target BS perform by described second handover request, and perform the switching of described terminal in bunch group according to the home base stations list after displacement.

3rd aspect of the present invention is to provide a kind of cluster head base station, comprising:

Acquisition module, for obtaining terminal iidentification, source base station mark and target BS mark;

First processing module, for inquiring about preset home base stations list, if inquire about described target BS mark not in described home base stations list, then inquire about in described home base stations list whether to have and identify corresponding public identifier with described terminal iidentification and described source base station, if have, and judge that bunch group mark that described public identifier comprises and described target BS identify bunch organizing of comprising and identify identical, the displacement instruction carrying described terminal iidentification is then sent to described source base station, to make described source base station, source base station mark corresponding for terminal iidentification described in bunch ownership list and public identifier are replaced,

Second processing module, the displacement returned for receiving described source base station completes information, source base station corresponding for terminal iidentification described in described home base stations list mark and public identifier are replaced, and send to the cluster head base station of target BS the second handover request carrying described terminal iidentification and target BS mark, source base station corresponding for terminal iidentification described in its preset home base stations list mark and public identifier are replaced for making the cluster head base station of described target BS perform by described second handover request, and perform the switching of described terminal in bunch group according to the home base stations list after displacement.

4th aspect of the present invention is to provide base station in a kind of public bunch, comprising:

First receiver module, for receiving the displacement instruction carrying terminal iidentification that cluster head base station sends;

Replacement module, for according to described displacement instruction, replaces source base station mark corresponding for terminal iidentification described in bunch ownership list and public identifier;

Feedback module, information is completed for returning displacement to described cluster head base station, to make described cluster head base station, source base station corresponding for terminal iidentification described in home base stations list mark and public identifier are replaced, and the second handover request carrying described terminal iidentification and target BS mark is sent to the cluster head base station for handover-target base station, source base station corresponding for terminal iidentification described in its preset home base stations list mark and public identifier are replaced for making the cluster head base station of described target BS perform by described second handover request, and perform the switching of described terminal in bunch group according to the home base stations list after displacement.

5th aspect of the present invention is to provide a kind of communication system, comprise at least two base stations bunch, described base station bunch comprises base station in cluster head base station and at least one bunch, base station in one public bunch is provided with between any two adjacent base stations bunch, wherein, described cluster head base station adopts the described cluster head base station that the embodiment of the present invention provides; Base station in described public bunch that in described public bunch, base station adopts the embodiment of the present invention to provide.

As shown from the above technical solution, the embodiment of the present invention is by arranging base station in public bunch that belongs to two bunches of groups in a communication network, when base station in another bunch of group that base station in terminal is for public bunch from this switches in this public bunch belonging to base station, in public bunch, Base Station Identification corresponding for terminal iidentification described in bunch ownership list and public identifier are replaced by base station, and Base Station Identification corresponding for terminal iidentification described in home base stations list and public identifier are all replaced by the cluster head base station of two bunches of groups in this public bunch belonging to base station.Now, for described terminal, in described public bunch, base station is divided to handover-target base station place bunch group from former bunch of group.The cluster head base station of handover-target base station can adopt the handoff procedure of terminal in bunch group to complete the switching of described terminal.Compared with the forwarding of a large amount of signaling and mutual between two cluster head base stations in prior art, the mutual of a signaling is only carried out in the embodiment of the present invention two cluster head base station, namely the cluster head base station of target BS adopts a bunch group inscribe to bring the switching performing terminal, greatly reduce the Signalling exchange between two cluster head base stations, simplify the process switched between terminal bunch group, and then efficiently avoid the handover delay that prior art exists and the risk switching call drop.

Accompanying drawing explanation

Fig. 1 is the structural representation of prior art base station section networking framework;

Fig. 2 is the Signalling exchange schematic flow sheet that prior art terminal UE A carries out switching between bunch group;

Fig. 3 is the structural representation of communications system embodiment one provided by the invention;

Fig. 4 is the schematic flow sheet of the embodiment of the method one that terminal provided by the invention switches between bunch group;

Fig. 5 is the schematic flow sheet of the embodiment of the method two that terminal provided by the invention switches between bunch group;

Fig. 6 is the schematic flow sheet of the embodiment of the method three that terminal provided by the invention switches between bunch group;

Fig. 7 is the Signalling exchange flow chart of an embody rule example of the method adopting terminal provided by the invention to switch between bunch group;

Fig. 8 is the structural representation of cluster head base station embodiment one provided by the invention;

Fig. 9 is the structural representation of a specific embodiment of acquisition module described in cluster head base station embodiment one provided by the invention;

Figure 10 is the structural representation of base station embodiment one in public bunch provided by the invention;

Figure 11 is the structural representation of base station embodiment two in public bunch provided by the invention.

Embodiment

Frequent for solving between prior art terminal bunch group two cluster head base station Signalling exchanges in handoff procedure, handover delay is long and easily switch the problems such as call drop, and the embodiment of the present invention is provided with base station in public bunch between every two adjacent base stations bunch.From the geographical position of reality, in public bunch, base station is in the intersection in two bunches of group institute's management and control regions.Example as shown in Figure 3, is provided with base station 11 in first public bunch between adjacent base station bunch one and base station bunches two, is provided with base station in second public bunch between adjacent base station bunches two and base station bunches three.Base station and bunch cluster headgroup station 8 is straight-through is connected in each bunch in described first public bunch in base station 11 and base station bunch, in each bunch in described first public bunch in base station 11 and base station bunches two, base station and bunch two cluster head base stations 9 lead directly to and are connected.Base station and bunch two cluster head base stations 9 are straight-through is connected in each bunch in described second public bunch in base station and base station bunches two, in each bunch in described second public bunch in base station and base station bunches three, base station and bunch three cluster head base stations 10 lead directly to and are connected.In first public bunch, in base station and second public bunch, base station is equipped with two marks.Such as, two marks of base station 11 in first public bunch, are respectively mark (Isosorbide-5-Nitrae) and mark (2,5).Two marks of base station in second public bunch, are respectively mark (2,4) and mark (3,5).Wherein, one is Base Station Identification, and another also belongs to the public identifier of another bunch of group by replacement operator for characterizing this base station.Namely in actual applications, for a terminal under base station in public bunch, in this public bunch, base station can only belong to a bunch of group, can not belong to two bunches of groups simultaneously.In public bunch, base station to prestore bunch an ownership list, and the list of this bunch of ownership includes the terminal iidentification of all terminals under base station in this public bunch, and Base Station Identification corresponding to each terminal iidentification and public identifier.Suppose, in first public bunch, under base station, service has two terminal UE A and UEC.In described first public bunch, base station is different or be the corresponding Base Station Identification of two terminal configuration and public identifier at random according to the geographical position during access of two terminals, generates a bunch ownership list and also stores.Described bunch of ownership is listed as follows shown in table 1:

Table 1, bunch ownership list of base station in first public bunch

Terminal iidentification	Base Station Identification	Public identifier
			UEA	(1,4)	(2,5)
UEC	(2,5)	(1，4)

As can be seen from above-mentioned list, for UEA, in described first public bunch, base station belongs to base station bunch; For UEC, in described first public bunch, base station belongs to base station bunches two.After one of them terminal is replaced because the Base Station Identification and public base station switching base station in by public bunch identifies, all other-end can not be had influence on.Wherein, in first public bunch, base station is not all the corresponding Base Station Identification of two terminal configuration and public identifier according to geographical position during two terminal accesses, specifically can realize in the following way: geographical position when base station is accessed according to terminal in first public bunch closer to the region of a base station bunch management and control still closer to the region of base station bunch two management and control, come for the corresponding Base Station Identification of described terminal configuration and public identifier, if such as UEA in public bunch of access first during base station geographical position closer to the region of a base station bunch management and control, then base station is the Base Station Identification that described UEA configures in described first public bunch is (1, 4), public identifier is (2, 5).In described public bunch, base station is after having new terminal access, in described public bunch, base station can upgrade described bunch of ownership list timely, and the information carrying the described mark that newly accesses terminal and Base Station Identification corresponding to this terminal iidentification and public identifier is sent to two cluster head base stations simultaneously, so that described two cluster head base stations are according to described information, upgrade respective home base stations list.Home base stations list is all pre-stored with in each cluster head base station.Described home base stations list includes the Base Station Identification and public identifier that in this bunch of group, under all ordinary base station, the terminal iidentification of all terminals is corresponding with each terminal iidentification with the terminal iidentification of all terminals under base station in the Base Station Identification of this ordinary base station and public bunch.Suppose, in first public bunch, under base station, service has two terminal UE A and UEC, and in bunch one first bunch, under base station, service has terminal UE i, and in bunch one second bunch, under base station, service has terminal UE j.Hypothesis is just in order to illustrate the particular content that home base stations list comprises herein, and in fact, the terminal of serving under base station in each bunch has multiple, does not list one by one in this hypothesis.Such as, the home base stations at bunch cluster headgroup station is listed as follows shown in table 2:

Table 2, the home base stations list at bunch cluster headgroup station

Terminal iidentification	Base Station Identification	Public identifier
			UEi	(1,2)
UEj	(1,3)
			UEA	(1，4)	(2,5)
UEC	(2,5)	(1，4)

Here it should be noted that: in the home base stations list of the above-mentioned cluster head base station exemplified except including terminal iidentification, Base Station Identification and public identifier, if base station corresponding to Base Station Identification with in another bunch of group bunch in base station establish straight-through connection, then also corresponding should store the base station corresponding with this Base Station Identification in described home base stations list and set up the Base Station Identification leading directly to the base station, opposite end connected.Specifically refer to and exemplify explanation in hereafter specific embodiment.

For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, with the example that switches to of a terminal under base station in public bunch, the technical scheme in the embodiment of the present invention is clearly and completely described, also can adopts to use the same method for the other-end under base station in public bunch and switch.

As shown in Figure 4, the schematic flow sheet of embodiment of the method one that switches between bunch group of terminal provided by the invention.As shown in the figure, the method described in the present embodiment one, comprising:

Step 101, acquisition terminal iidentification, source base station mark and target BS mark.

Particularly, cluster head base station in source receives the first handover request that source base station sends.Described first handover request information carries described terminal iidentification, source base station mark and target BS mark, and described first handover request is that described source base station sends according to the measurement report being received from terminal to report.Wherein, described source base station mark comprise bunch group mark and bunch in mark, described target BS mark comprise bunch group mark and bunch in mark.Described measurement report carries mark and the signal strength signal intensity of all base stations adjacent with described source base station.Described source base station switches demand according to the signal strength analysis of base station each in the measurement report received, and determines the object Base Station Identification of described terminal for switching.

Step 102, inquire about preset home base stations list, if inquire about described target BS mark not in described home base stations list, then inquire about in described home base stations list whether to have identifying corresponding public identifier with described terminal iidentification and described source base station.

Particularly, described home base stations list is pre-stored with in cluster head base station, described source.Described home base stations list includes the terminal iidentification of all terminals under the Base Station Identification of all base stations of its management and control and base station.If also include base station in public bunch in bunch group of described source cluster head base station management and control, the terminal iidentification of all terminals under base station in public bunch is also included in the home base stations list of then cluster head base station, described source, and Base Station Identification corresponding to each terminal iidentification and public identifier.Described target BS mark, not in described home base stations list, illustrates described target BS not in bunch group of described source cluster head base station institute management and control.

If step 103 has, and judge that bunch group mark that described public identifier comprises and described target BS identify bunch organizing of comprising and identify identical, then send the displacement instruction carrying described terminal iidentification to described source base station, to make described source base station, source base station mark corresponding for terminal iidentification described in bunch ownership list and public identifier are replaced.

Particularly, cluster head base station, described source inquires the public identifier of described terminal iidentification and described source base station mark correspondence in described home base stations list, illustrates that source base station is base station in public bunch.Now.Cluster head base station, described source judges that bunch group mark that the described public identifier inquired comprises and described target BS identify bunch organizing of comprising and whether identically identify.If identical, then illustrate that described source base station is base station in current place bunch group and target BS place bunch organize public bunch, cluster head base station, described source sends the displacement instruction carrying described terminal iidentification to described source base station, source base station mark corresponding for terminal iidentification described in bunch ownership list and public identifier are replaced to make described source base station.Wherein, the terminal iidentification of all terminals under the list of described bunch of ownership includes described source base station, and Base Station Identification corresponding to each terminal iidentification and public identifier.Here it should be noted that: in each embodiment provided by the invention, for convenience of description, the Base Station Identification of source base station is reduced to source base station mark.That is, described source base station mark is the Base Station Identification that described in source base station bunch ownership list, terminal iidentification is corresponding.

Step 104, receive the displacement that described source base station returns and complete information, source base station corresponding for terminal iidentification described in described home base stations list mark and public identifier are replaced, and send to the cluster head base station of target BS the second handover request carrying described terminal iidentification and target BS mark, source base station corresponding for terminal iidentification described in its preset home base stations list mark and public identifier are replaced for making the cluster head base station of described target BS perform by described second handover request, and perform the switching of described terminal in bunch group according to the home base stations list after displacement.

Particularly, described source base station, by after source base station mark corresponding for terminal iidentification described in bunch ownership list and public identifier displacement, can generate displacement and completes information and be back to cluster head base station, described source.Cluster head base station, described source is receiving after displacement that described source base station returns completes information, source base station corresponding for terminal iidentification described in home base stations list mark and public identifier are replaced, and send the second handover request to the cluster head base station of target BS, equally source base station corresponding for the described terminal iidentification in its home base stations list mark and public identifier are replaced to make the cluster head base station of described target BS.After the source base station mark that described terminal iidentification in the home base stations list of the cluster head base station of cluster head base station, described source and described target BS is corresponding and public identifier have been replaced, relative to described terminal, namely source base station now belongs in the base station bunch group at target BS place, and does not belong to source base station bunch group.Now, the cluster head base station of target BS can adopt the handoff procedure of terminal in bunch group to complete the switching of described terminal.

Here it should be noted that: the cluster head base station of source base station described in the present embodiment, cluster head base station, source and target BS is all Base Station Identification corresponding for the terminal iidentification of switching terminal and terminal iidentification are replaced, and Base Station Identification corresponding to other-end mark under described source base station and terminal iidentification do not change.It can thus be appreciated that for each terminal under described source base station, belonging to described source base station, a bunch group is different.When one of them terminal adopts that described in the present embodiment, method switches, the other-end under this source base station can not be affected.

The present embodiment is by arranging base station in public bunch that belongs to two bunches of groups in a communication network, when base station in another bunch of group that base station in terminal is for public bunch from this switches in this public bunch belonging to base station, in public bunch, Base Station Identification corresponding for terminal iidentification described in bunch ownership list and public identifier are replaced by base station, and Base Station Identification corresponding for terminal iidentification described in home base stations list and public identifier are all replaced by the cluster head base station of two bunches of groups in this public bunch belonging to base station.Now, for described terminal, in described public bunch, base station is divided to another bunch of affiliated group from former bunch of group.The cluster head base station of handover-target base station can adopt the handoff procedure of terminal in bunch group to complete the switching of described terminal.Compared with the forwarding of a large amount of signaling and mutual between two cluster head base stations in prior art, the mutual of a signaling is only carried out in the embodiment of the present invention two cluster head base station, namely the cluster head base station of target BS adopts a bunch group inscribe to bring the switching performing terminal, greatly reduce the Signalling exchange between two cluster head base stations, simplify the process switched between terminal bunch group, and then efficiently avoid the handover delay existed in prior art and the risk switching call drop.

As shown in Figure 5, the schematic flow sheet of embodiment of the method two that switches between bunch group of terminal provided by the invention.As shown in the figure, described in the present embodiment two, method comprises:

Step 201, base station receives cluster head base station and sends the displacement instruction carrying terminal iidentification in public bunch.

Step 202, source base station mark corresponding for terminal iidentification described in bunch ownership list and public identifier, according to described displacement instruction, are replaced by base station in described public bunch.

Step 203, in described public bunch, base station returns displacement to described cluster head base station and completes information, to make described cluster head base station, source base station corresponding for terminal iidentification described in home base stations list mark and public identifier are replaced, and the second handover request carrying described terminal iidentification and target BS mark is sent to the cluster head base station for handover-target base station, source base station corresponding for terminal iidentification described in its preset home base stations list mark and public identifier are replaced for making the cluster head base station of described target BS perform by described second handover request, and perform the switching of described terminal in bunch group according to the home base stations list after displacement.

Particularly, the method described in above-described embodiment two, as shown in Figure 6, before described step 201, also comprises:

Step 301, the measurement report carrying terminal iidentification that base station receiving terminal reports in described public bunch.

Wherein, described measurement report include with described public bunch in the mark of adjacent all base stations, base station and signal strength signal intensity.

Step 302, the target BS mark of described terminal for switching, according to described measurement report, is determined in base station in described public bunch.

Particularly, in described public bunch base station according to comprise in described measurement report with described public bunch in the mark of adjacent all base stations, base station and signal strength signal intensity, determine the switching demand of described terminal, i.e. handover-target base station mark.

Step 303, in described public bunch, base station sends the first handover request to described cluster head base station, described first handover request carries described terminal iidentification, source base station mark and target BS mark, to make described cluster head base station according to described first handover request, obtain described terminal iidentification, source base station mark and target BS mark, and it is different to identify in bunch group that described source base station mark comprises bunch group mark comprised with target BS mark, and in home base stations list, inquire the public identifier of described terminal iidentification and described source base station mark correspondence, bunch group mark that this public identifier comprises and described target BS identify bunch organizing of comprising when identifying identical, send described displacement instruction.

Below in conjunction with example as shown in Figure 3, the method that the described terminal provided various embodiments of the present invention switches between bunch group elaborates.

As shown in Figure 3, suppose built vertical communication link between the terminal UE B in terminal UE A in described first public bunch under base station 11 and bunches 3 the 3rd bunches under base station 7, namely terminal UE A and terminal UE B converses, and in first public bunch, base station 11 and base station 7 in bunches 3 the 3rd bunches establish straight-through connection.When terminal UE A is for switching, terminal UE A is to base station 11 reporting measurement reports in first public bunch.Include in described measurement report with described first public bunch in the mark of adjacent all base stations, base station 11 and signal strength signal intensity.If base station 11 switches demand according to the signal strength analysis of base station each in the measurement report received in described first public bunch, determining that terminal UE A switches object base station is base station 6 in base station bunches two bunches 2 first bunches.It is noted herein that: the first public base station 11 and base station in bunches 3 the 3rd bunches have established straight-through connection, therefore, the Base Station Identification setting up the straight-through base station, opposite end be connected with described first public base station 11 is also included in the home base stations list that described bunch of cluster headgroup station 8 prestores, as shown in table 3 below:

Table 3, the home base stations list at bunch cluster headgroup station

Terminal iidentification	Base Station Identification	Public identifier	Opposite end Base Station Identification
				UEi	(1，2)
UEj	(1，3)
				UEA	(1,4)	(2,5)	(3,4)
UEC	(2,5)	(1，4)

In like manner, the home base stations that described bunch of two cluster head base station 9 prestore is listed as follows shown in table 4:

Table 4, the home base stations list of bunch two cluster head base stations

Terminal iidentification	Base Station Identification	Public identifier	Opposite end Base Station Identification
				UEn	(2,2)
UEm	(2，3)
				UEA	(1，4)	(2,5)	(3,4)
UEC	(2，5)	(1,4)
				UED	(2,4)	(3,5)

Particularly, the handoff procedure of UEA between bunch group, signaling diagram as shown in Figure 7, comprising:

Step 401, bunch cluster headgroup station 8 receive the first handover request that base station 11 in first public bunch sends, and described first handover request carries terminal iidentification, the Base Station Identification of base station 6 in the Base Station Identification of base station 11 and bunches 2 first bunches in first public bunch of UEA.Wherein, in first public bunch the Base Station Identification of base station 11 to comprise bunch group mark and bunch in mark, i.e. (Isosorbide-5-Nitrae).In described bunch 2 first bunches the Base Station Identification of base station 6 to comprise bunch group mark and bunch in mark, i.e. (2,2).Described bunch of cluster headgroup station 8, according to described first handover request, obtains the terminal iidentification of described UEA, the Base Station Identification of base station 6 in the Base Station Identification of base station 11 and bunches 2 first bunches in described first public bunch.

Step 402, described bunch of cluster headgroup station 8 inquire about preset home base stations list, i.e. table 3.Described bunch of cluster headgroup station 8 inquires the Base Station Identification of base station 6 in described bunch 2 first bunches not in home base stations list, then inquire about in described home base stations list and whether have the public identifier corresponding with the mark (Isosorbide-5-Nitrae) of base station 11 in the terminal iidentification of described UEA and described first public bunch.As above table 3 is known, has the public identifier (2,5) corresponding with the mark (Isosorbide-5-Nitrae) of base station 11 in the terminal iidentification of described UEA and described first public bunch in described home base stations list.

What step 403, described bunch of cluster headgroup station 8 judged that bunch group mark that described public identifier comprises and the mark of base station 6 in bunches 2 first bunches comprise bunch organize identify whether identical.If identical, then described bunch cluster headgroup station 8 sends to base station 11 in described first public bunch the displacement instruction carrying the terminal iidentification of described UEA.

Step 404, in described first public bunch base station 11 according to described displacement instruction, by Base Station Identification (1 corresponding for the terminal iidentification of UEA described in bunch ownership list, 4) and public identifier (2,5) replace, send displacement to described bunch of cluster headgroup station 8 after having replaced and complete information.Wherein, after having replaced, described bunch of ownership is listed as follows shown in table 5:

Table 5, bunch ownership list of base station in after displacement first public bunch

Terminal iidentification	Base Station Identification	Public identifier
			UEA	(2，5)	(1，4)
UEC	(2,5)	(1，4)

Step 405, described bunch of cluster headgroup station 8 receive after displacement that in described first public bunch, base station 11 returns completes information, by Base Station Identification (1 corresponding for the terminal iidentification of UEA described in described home base stations list, 4) and public identifier (2,5) replace, the described home base stations after displacement is listed as follows shown in table 6:

Table 6, the home base stations list at bunch cluster headgroup station after displacement

Terminal iidentification	Base Station Identification	Public identifier	Opposite end Base Station Identification
				UEi	(1，2)
UEj	(1,3)
				UEA	(2,5)	(1，4)	(3,4)
UEC	(2，5)	(1，4)

Step 406, described bunch of cluster headgroup station 8 send the second handover request to described bunch of two cluster head base stations 9, and described second handover request carries the Base Station Identification of base station 6 in the terminal iidentification of described UEA and bunches 2 first bunches.Base Station Identification (Isosorbide-5-Nitrae) corresponding for the terminal iidentification of UEA described in home base stations list and public identifier (2,5) are replaced by described bunch of two cluster head base stations 9, and the described home base stations after displacement is listed as follows shown in table 7:

Table 7, the home base stations list of bunch two cluster head base stations after displacement

Terminal iidentification	Base Station Identification	Public identifier	Opposite end Base Station Identification
				UEn	(2,2)
UEm	(2,3)
				UEA	(2,5)	(1，4)	(3,4)
UEC	(2,5)	(1，4)
				UED	(2,4)	(3,5)

Step 407, described bunch of two cluster head base stations 9 perform the switching of described terminal in bunch group according to the described home base stations list after displacement.

Wherein, described bunch of two cluster head base stations 9 perform the switching of terminal UE A in bunch group according to the home base stations list after displacement, as shown in Figure 7, comprising:

The Base Station Identification (2 of base station 6 in step 4071, described bunch of two cluster head base station 9 carry according to described second handover request bunches 2 first bunches, 2), in described bunch 2 first bunches, base station 6 sends the 3rd handover request, described 3rd handover request carries the Base Station Identification (2,5) of base station in the terminal iidentification of UEA and first public bunch.

Step 4072, in described bunch 2 first bunches base station 6 according to described 3rd handover request, the response of corresponding handover request is returned to described bunch of two cluster head base stations 9, the response of described handover request carries terminal iidentification, the Base Station Identification (2 of base station in bunches 2 first bunches of UEA, 2) Base Station Identification (2,5) of base station in and the first public bunch.Described bunch of two cluster head base station 9 are according to the Base Station Identification (2 of base station in described first public bunch, 5), the described handover request response received is forwarded to base station 11 in described first public bunch, to make in described first public bunch base station 11 according to the terminal iidentification of described UEA, to described terminal UE A send carry bunches 2 first bunches in the switching command of Base Station Identification (2,2) of base station.Described terminal UE A is according to the connection of base station 11 in described switching command disconnection and described first public bunch.

Step 4073, described terminal UE A are according to the Base Station Identification (2,2) of base station in described bunch 2 first bunches, and in described bunch 2 first bunches, base station 6 sends access request, is connected with the RRC of base station 6 in described bunch 2 first bunches to set up.In described bunch 2 first bunches, base station 6 and described terminal UE A successfully set up after RRC is connected, and send to described bunch of two cluster head base stations 9 the first handover success message carrying the terminal iidentification of UEA.After described bunch of two cluster head base stations 9 receive described first handover success message, Base Station Identification (2 in corresponding first public bunch of the terminal iidentification of UEA described in inquiry home base stations list, 5) Base Station Identification (3,4) of the base station, opposite end and with base station direct connection in first public bunch be connected.Described bunch of two cluster head base station 9 are according to Base Station Identification (2 in inquire first public bunch, 5), in described first public bunch, base station sends the Base Station Identification (3 carrying base station, opposite end, 4) first straight-through releases order, with the straight-through connection between base station in bunches 3 the 3rd bunches that make the release of base station in described first public bunch and described Base Station Identification (3,4) corresponding.Simultaneously, described bunch of two cluster head base stations 9 are according to the Base Station Identification (3 of the base station, opposite end inquired, 4) bunch group mark, the Base Station Identification (3 carrying base station, opposite end is sent to bunch three cluster head base stations 10,4) Base Station Identification (2 in and the first public bunch, 5) the second handover success message, to make described bunch three cluster head base stations 10 according to described second handover success message, to described Base Station Identification (3,4) base station 7 sends the second straight-through Connection Release instruction carrying Base Station Identification (2,5) in described first public bunch in corresponding bunch 3 the 3rd bunches.In described bunch 3 the 3rd bunch, base station 7 is according to the described second straight-through Connection Release instruction, discharges and is connected with straight-through between base station 11 in described first public bunch.Described bunch of two cluster head base station Base Station Identification corresponding for the terminal iidentification of UEA described in local list is updated to bunches 2 first bunches simultaneously in the Base Station Identification of base station.The home base stations list of bunch two cluster head base stations after renewal, as shown in table 8 below:

Table 8, the home base stations list of bunch two cluster head base stations after renewal

Terminal iidentification	Base Station Identification	Public identifier	Opposite end Base Station Identification
				UEn	(2,2)
UEm	(2,3)
				UEA	(2,2)		(3,4)
UEC	(2,5)	(1,4)
				UED	(2,4)	(3,5)

Step 4074, base station 6 sends the Base Station Identification (2 of base station in the terminal iidentification that carries UEA and bunches 2 first bunches to described bunch of two cluster head base stations 9 in described bunch 2 first bunches, 2) straight-through connection establishment request, the straight-through connection establishment request forward extremely described bunch of three cluster head base stations 10 that described bunch of two cluster head base stations 9 will receive, to make described bunch three cluster head base stations 10 more described straight-through connection establishment request is sent to base station 7 in described bunch 3 the 3rd bunches, return straight-through connection establishment request-reply to make in described bunch 3 the 3rd bunches base station 7 to base station 6 in described bunch 2 first bunches.

Step 4075, after base station 6 receives described straight-through connection establishment request-reply in described bunch 2 first bunches, straight-through connection establishment successful information is sent to described bunch of two cluster head base stations 9, now, in described bunch 2 first bunches, base station 6 and base station 7 in described bunch 3 the 3rd bunch successfully establish straight-through connection, and in described bunch 2 first bunches, base station 6 and base station 7 in described bunch 3 the 3rd bunch are carried out data direct transfer by straight-through connection of having set up.

As can be seen from above-mentioned example, the described method that the embodiment of the present invention provides, terminal UE A base station in from first public bunch switch to bunches 2 first bunches in base station process in, between described bunch of cluster headgroup station and described bunch of two cluster head base stations, only once signaling is mutual, and namely the first cluster head base station described in step 406 sends the second handover request to described second cluster head base station.Described second cluster head base station is after receiving described second handover request, the source base station mark that described in the list of execution home base stations, terminal iidentification is corresponding and the replacement operator of public identifier, then perform the switching of described terminal in bunch group according to the home base stations list after displacement.In follow-up bunch of group during switching, described second cluster head base station without the need to again with the mutual signaling of the first cluster head.Obviously, signaling reception and the signaling forwarding of four times need be carried out in contrast prior art bunch cluster headgroup station as shown in Figure 2, wherein, described bunch of cluster headgroup station need send twice signaling to bunch two cluster head base stations, and the signaling of twice bunch of two cluster head base stations transmissions need be received, the embodiment of the method that described terminal provided by the invention switches between bunch group decreases the signaling interaction times between two cluster head base stations, simplify the process switched between terminal bunch group, and then efficiently avoid the handover delay that prior art exists and the risk switching call drop.

One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that program command is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.

As shown in Figure 8, the structural representation of cluster head base station embodiment one provided by the invention.As shown in the figure, described in the present embodiment, cluster head base station comprises: acquisition module 20, first processing module 30 and the second processing module 40.Wherein, described acquisition module 20 is for obtaining terminal iidentification, source base station mark and target BS mark.Described first processing module 30 is for inquiring about preset home base stations list, if inquire about described target BS mark not in described home base stations list, then inquire about in described home base stations list whether to have and identify corresponding public identifier with described terminal iidentification and described source base station, if have, and judge that bunch group mark that described public identifier comprises and described target BS identify bunch organizing of comprising and identify identical, the displacement instruction carrying described terminal iidentification is then sent to described source base station, to make described source base station, source base station mark corresponding for terminal iidentification described in bunch ownership list and public identifier are replaced.Described second processing module 40 completes information for the displacement receiving described source base station and return, source base station corresponding for terminal iidentification described in described home base stations list mark and public identifier are replaced, and send to the cluster head base station of target BS the second handover request carrying described terminal iidentification and target BS mark, source base station corresponding for terminal iidentification described in its preset home base stations list mark and public identifier are replaced for making the cluster head base station of described target BS perform by described second handover request, and perform the switching of described terminal in bunch group according to the home base stations list after displacement.Cluster head base station described in the present embodiment can realize the method that the terminal described in said method embodiment one switches between bunch group.Particularly, the principle that realizes of the cluster head base station described in the present embodiment see the related content described in said method embodiment one, can repeat no more herein.

The present embodiment is by arranging base station in public bunch that belongs to two bunches of groups in a communication network, when base station in another bunch of group that base station in terminal is for public bunch from this switches in this public bunch belonging to base station, in public bunch, Base Station Identification corresponding for terminal iidentification described in bunch ownership list and public identifier are replaced by base station, and Base Station Identification corresponding for terminal iidentification described in home base stations list and public identifier are all replaced by the cluster head base station of two bunches of groups in this public bunch belonging to base station.Now, for described terminal, in described public bunch, base station is divided to handover-target base station place bunch group from former bunch of group.The cluster head base station of handover-target base station can adopt the handoff procedure of terminal in bunch group to complete the switching of described terminal.Compared with the forwarding of a large amount of signaling and mutual between two cluster head base stations in prior art, the mutual of a signaling is only carried out in the embodiment of the present invention two cluster head base station, namely the cluster head base station of target BS adopts a bunch group inscribe to bring the switching performing terminal, greatly reduce the Signalling exchange between two cluster head base stations, simplify the process switched between terminal bunch group, and then efficiently avoid the handover delay that prior art exists and the risk switching call drop.

Particularly, the acquisition module 20 described in above-described embodiment can adopt structure as shown in Figure 9 to realize.As shown in Figure 9, described acquisition module 20 comprises: receiving element 21 and acquiring unit 22.Wherein, the first handover request that described receiving element 21 sends for receiving described source base station, described first handover request carries described terminal iidentification, source base station mark and target BS mark, described first handover request is that described source base station sends according to the measurement report being received from described terminal to report, wherein, described source base station mark comprise bunch group mark and bunch in mark, described target BS mark comprise bunch group mark and bunch in mark.Described acquiring unit 22, for according to described first handover request, obtains described terminal iidentification, source base station mark and target BS mark.

As shown in Figure 10, the structural representation of base station embodiment one in public bunch provided by the invention.As shown in Figure 10, described in the present embodiment bunch in base station comprise: the first receiver module 50, replacement module 60 and feedback module 70.Wherein, described first receiver module 50 is for receiving the displacement instruction carrying terminal iidentification of cluster head base station transmission.Source base station mark corresponding for terminal iidentification described in bunch ownership list and public identifier, for according to described displacement instruction, are replaced by described replacement module 60.Described feedback module 70 completes information for returning displacement to described cluster head base station, to make described cluster head base station, source base station corresponding for terminal iidentification described in home base stations list mark and public identifier are replaced, and the second handover request carrying described terminal iidentification and target BS mark is sent to the cluster head base station for handover-target base station, source base station corresponding for terminal iidentification described in its preset home base stations list mark and public identifier are replaced for making the cluster head base station of described target BS perform by described second handover request, and perform the switching of described terminal in bunch group according to the home base stations list after displacement.In public bunch described in the present embodiment, base station can realize the method that the terminal described in said method embodiment two switches between bunch group.Particularly, described in the present embodiment bunch in the principle that realizes of base station see the related content described in said method embodiment two, can repeat no more herein.

Further, base station in public bunch described in above-described embodiment one, as shown in figure 11, also comprises: the second receiver module 80, determination module 90 and sending module 100.Wherein, the measurement report carrying terminal iidentification that reports for receiving terminal of described second receiver module 80.Described acquisition module 90, for according to described measurement report, determines the target BS mark of described terminal for switching.Described sending module 100 is for sending the first handover request to described cluster head base station, described first handover request carries described terminal iidentification, source base station mark and target BS mark, to make described cluster head base station according to described first handover request, obtain described terminal iidentification, source base station mark and target BS mark, inquire about preset home base stations list, when described target BS mark is not in described home base stations list, and have in described home base stations list and identify corresponding public identifier with described terminal iidentification and described source base station, and bunch group mark that comprises of this public identifier and described target BS identify bunch organizing of comprising when identifying identical, send described displacement instruction.

Described communications system embodiment one provided by the invention, comprises at least two base stations bunch.Described base station bunch comprises base station in cluster head base station and at least one bunch, is provided with base station in public bunch between any two adjacent base stations bunch.Communication system example as shown in Figure 3, comprises three base stations bunch.Each base station bunch comprises base station in a cluster head base station and multiple bunches, is provided with base station 11 in first public bunch between base station bunch one and base station bunches two.Base station in second public bunch is provided with between base station bunches two and base station bunches three.Wherein, described cluster head base station is for obtaining terminal iidentification, source base station mark and target BS mark, inquire about preset home base stations list, if inquire about described target BS mark not in described home base stations list, then inquire about in described home base stations list whether to have identifying corresponding public identifier with described terminal iidentification and described source base station, if have, and judge that bunch group mark that described public identifier comprises and described target BS identify bunch organizing of comprising and identify identical, then send the displacement instruction carrying described terminal iidentification to described source base station, to make described source base station, source base station mark corresponding for terminal iidentification described in bunch ownership list and public identifier are replaced, receive the displacement that described source base station returns and complete information, source base station corresponding for terminal iidentification described in described home base stations list mark and public identifier are replaced, and send to the cluster head base station of target BS the second handover request carrying described terminal iidentification and target BS mark, source base station corresponding for terminal iidentification described in its preset home base stations list mark and public identifier are replaced for making the cluster head base station of described target BS perform by described second handover request, and perform the switching of described terminal in bunch group according to the home base stations list after displacement.The displacement instruction carrying terminal iidentification that in described public bunch, base station sends for receiving cluster head base station, according to described displacement instruction, source base station mark corresponding for terminal iidentification described in bunch ownership list and public identifier are replaced, return displacement to described cluster head base station and complete information, to make described cluster head base station, source base station corresponding for terminal iidentification described in home base stations list mark and public identifier are replaced, and the second handover request carrying described terminal iidentification and target BS mark is sent to the cluster head base station for handover-target base station, source base station corresponding for terminal iidentification described in its preset home base stations list mark and public identifier are replaced for making the cluster head base station of described target BS perform by described second handover request, and perform the switching of described terminal in bunch group according to the home base stations list after displacement.Particularly, the cluster head base station described in the present embodiment can adopt the cluster head base station described in said apparatus embodiment.In described public bunch, base station can adopt base station in public bunch described in said apparatus embodiment.

Here it should be noted that: in the above-described embodiments, the description of each embodiment all emphasized particularly on different fields in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.In addition, for aforesaid each embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the application is not by the restriction of described sequence of movement, because according to the application, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action and module might not be that the application is necessary.

Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims

1. the method that switches between bunch group of terminal, is characterized in that, comprising:

Obtain terminal iidentification, source base station mark and target BS mark;

2. the method that switches between bunch group of terminal according to claim 1, is characterized in that, described acquisition terminal iidentification, source base station mark and target BS mark, comprising:

Receive the first handover request that described source base station sends, described first handover request carries described terminal iidentification, source base station mark and target BS mark, and described first handover request is that described source base station sends according to the measurement report being received from described terminal to report;

According to described first handover request, obtain described terminal iidentification, source base station mark and target BS mark.

3. the method that switches between bunch group of terminal, is characterized in that, comprising:

The displacement instruction carrying terminal iidentification that the cluster head base station receiving former bunch of group sends;

Cluster head base station to described former bunch of group returns displacement and completes information, to make the cluster head base station of described former bunch of group, source base station corresponding for terminal iidentification described in home base stations list mark and public identifier are replaced, and the second handover request carrying described terminal iidentification and target BS mark is sent to the cluster head base station for handover-target base station, source base station corresponding for terminal iidentification described in its preset home base stations list mark and public identifier are replaced for making the cluster head base station of described target BS perform by described second handover request, and perform the switching of described terminal in bunch group according to the home base stations list after displacement.

4. the method that switches between bunch group of terminal according to claim 3, is characterized in that, before what described reception cluster head base station sent carry the displacement instruction of terminal iidentification, also comprises:

The measurement report of what receiving terminal reported carry terminal iidentification;

According to described measurement report, determine the target BS mark of described terminal for switching;

Cluster head base station to former bunch of group sends the first handover request, described first handover request carries described terminal iidentification, source base station mark and target BS mark, to make the cluster head base station of described former bunch of group according to described first handover request, obtain described terminal iidentification, source base station mark and target BS mark, inquire about preset home base stations list, when described target BS mark is not in described home base stations list, and have in described home base stations list and identify corresponding public identifier with described terminal iidentification and described source base station, and bunch group mark that comprises of this public identifier and described target BS identify bunch organizing of comprising when identifying identical, send described displacement instruction.

5. a cluster head base station, is characterized in that, comprising:

6. cluster head base station according to claim 5, is characterized in that, described acquisition module, comprising:

Receiving element, for receiving the first handover request that described source base station sends, described first handover request carries described terminal iidentification, source base station mark and target BS mark, and described first handover request is that described source base station sends according to the measurement report being received from described terminal to report;

Acquiring unit, for according to described first handover request, obtains described terminal iidentification, source base station mark and target BS mark.

7. a base station in public bunch, is characterized in that, comprising:

First receiver module, the displacement instruction carrying terminal iidentification that the cluster head base station for receiving former bunch of group sends;

Feedback module, information is completed for returning displacement to the cluster head base station of described former bunch of group, to make the cluster head base station of described former bunch of group, source base station corresponding for terminal iidentification described in home base stations list mark and public identifier are replaced, and the second handover request carrying described terminal iidentification and target BS mark is sent to the cluster head base station for handover-target base station, source base station corresponding for terminal iidentification described in its preset home base stations list mark and public identifier are replaced for making the cluster head base station of described target BS perform by described second handover request, and perform the switching of described terminal in bunch group according to the home base stations list after displacement.

8. base station in public bunch according to claim 7, is characterized in that, also comprise:

Second receiver module, for the measurement report carrying terminal iidentification that receiving terminal reports;

Determination module, for according to described measurement report, determines the target BS mark of described terminal for switching;

Sending module, for sending the first handover request to the cluster head base station of former bunch of group, described first handover request carries described terminal iidentification, source base station mark and target BS mark, to make the cluster head base station of described former bunch of group according to described first handover request, obtain described terminal iidentification, source base station mark and target BS mark, inquire about preset home base stations list, when described target BS mark is not in described home base stations list, and have in described home base stations list and identify corresponding public identifier with described terminal iidentification and described source base station, and bunch group mark that comprises of this public identifier and described target BS identify bunch organizing of comprising when identifying identical, send described displacement instruction.

9. a communication system, is characterized in that, comprises at least two base stations bunch, and described base station bunch comprises base station in cluster head base station and at least one bunch, is provided with base station in public bunch between any two adjacent base stations bunch, wherein,

Described cluster head base station adopts the cluster head base station described in the claims 5 or 6;

In described public bunch, base station adopts base station in described in the claims 7 or 8 public bunch.