CN101094502B

CN101094502B - Network architecture, and switching method based on the network architecture

Info

Publication number: CN101094502B
Application number: CN2006100894137A
Authority: CN
Inventors: 熊春山; 毕海洲
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2006-06-23
Filing date: 2006-06-23
Publication date: 2010-06-16
Anticipated expiration: 2026-06-23
Also published as: CN101094502A

Abstract

The invention comprises: radio access entities and some cells under the control of the radio access entity; the cells under the control of radio access entity can be at different location regions; the neighboring cells located between neighboring radio access entities has same location region set. The invention also provides a switchover method based on said network architecture for realizing the switchover between real-time server and non real-time service which switches user from source cell under the radio access entity to a destination cell or switches the source cell of source radio access entity to the destination cell under the radio access entity in same core network.

Description

A kind of network architecture reaches the changing method based on this network architecture

Technical field

The present invention relates to network and communication technical field, relate in particular to a kind of network system and based on the changing method of this network system.

Background technology

Cell mobile communication systems is made up of one or more coverages, and zones of different has different signs.For third generation collaborative project (3GPP, 3 ^RdGeneration partnership project) coverage of system, have corresponding to circuit switching (CS, Circuit-switched) lane place in territory (LA, LocationArea) and packet switching (PS, Packet-Switched) the route district in territory (RA, Route Area).CS territory with the 3GPP system is an example, and its network architecture as shown in Figure 1.A band of position comprises one or more base stations usually, the one or more sub-districts of BTS management.By lane place (LA), base station (NodeB), and the sub-district forms a tree-shaped network architecture.Obviously, in this network configuration, all sub-districts under base station belong to a lane place.If this network support network is shared or Iu interface duplex (Iu-Flex), all sub-districts down, a base station then have a plurality of lane place so, and these lane place are formed lane place and gathered.Like this, all sub-districts under base station all have identical lane place set.

When lane place, base station and the sub-district of cell mobile communication systems belonged to aforesaid tree network architecture, then the handoff procedure in diverse location district can more complicated, and also can extend the break period of transfer of data.Need to prove that switching described here is meant subscriber equipment (UE, userequipment) process of its business datum continuity of maintenance in moving process in the mobile communication system.

In traditional 3GPP system, TS23.060 has provided different service universal grouping wireless business supporting node (SGSN, serving GPRS support node) handoff procedure between, this handoff procedure more complicated can not satisfy the requirement that real time business is switched.

In the 3GPP of evolution system, in order to solve different mobile management entity/user plane entity (MME/UPE, Mobile Management Entity/User Plane Entity) switching problem between, TR23.882 has also proposed the changing method based on S1 interface duplex (S1-Flex), require Long Term Evolution project/System Architecture Evolution (LTE/SAE, Long Time Evolution/System ArchitectureEvolution) all wireless access under (RA, radio access) entity links to each other with all MME/UPE by S1-Flex.Fig. 2 is a kind of handoff procedure that provides in the research work output document TR23.882 of the LTE/SAE of 3GPP system, i.e. handoff procedure between two RA entities under the same MME/UPE.

And, shown in Fig. 3 and 4, can adopt following two kinds of different implementations respectively for the switching of two RA entities between the different MME/UPE.

Scheme one: as shown in Figure 3, be the handoff procedure of the insensitive business of time delay (mainly referring to non real-time class business) between different MME/UPE.When UE does to switch, under same MME/UPE service area, carry out earlier two switchings between the RA entity, detailed process is with reference to shown in Figure 2; In the time need between different MME/UPE service areas, carrying out the switching of RA entity, then MME/UPE is switched to new MME/UPE service area after, under new MME/UPE service area, carry out two switchings between the RA entity again.

Scheme two: as shown in Figure 4, be the handoff procedure of delay sensitive business (mainly referring to real-time class business) between different MME/UPE.When UE does to switch, when UE switches to another RA entity from a RA entity, keep MME/UPE constant; After UE entered the Idle state, UE entered new MME/UPE service area with UE from original MME/UPE by location area updating.

As from the foregoing, in the 3GPP of evolution system, the switching of RA entity realizes very complicated between the different MME/UPE.In order to improve performance of handoffs, require in the switching of class business in real time, can reduce break period as much as possible, TR23.882 has proposed corrective measure, promptly will realize that S1-Flex is connected entirely between all eNodeB and all MME/UPE.Like this, when UE is the professional switching of real-time class,, only changes eNodeB (just only between eNodeB, switching) at handoff procedure, and do not change MME/UPE by the S1-Flex interface.When this real time business is finished, and behind UE (Idle) state that enters the free time, UE carries out location area updating, thereby is attached on the new MME/UPE.

As seen, realize that eNodeB is connected (be equivalent to all RNC carry out the complete of Iu-Flex with all SGSN be connected) entirely with the S1-Flex of MME/UPE be the prerequisite of the above-mentioned changing method of proposition among the TR23.882, that is to say, if do not realize that S1-Flex connects entirely, the method for the real-time performance of handoffs of solution that then proposes among the TR23.882 is just unavailable.Yet this full connection is to be difficult to realize in practice.There is certain defective in the method for the real-time performance of handoffs of this solution that therefore, proposes among the TR23.882.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of network system and based on the changing method of this network system, be applicable to the professional and real-time class business of non real-time class simultaneously, and need not to carry out the full connection of S1 interface, just can realize the switching of entity between the different MME/UPE.

The technical scheme that realizes the object of the invention is as follows:

A kind of network system, comprise that the wireless access entity reaches several sub-districts by this wireless access entity management, wherein: there is the situation that belongs to the diverse location district in the sub-district under the described wireless access entity, and the neighbor cell between the adjacent wireless access entity has identical lane place set.

If the neighbor cell between any two adjacent wireless access entities, the lane place set equality under it does not then need to do any processing; Otherwise neighbor cell is configured to belong to a lane place set.

Preferably, according to following steps neighbor cell is configured to belong to a lane place set:

First cell configuration in the neighbor cell is become to belong to simultaneously the second place district set of second sub-district, second cell configuration is become to belong to simultaneously the primary importance district set of first sub-district, thereby make the sub-district of winning belong to identical lane place set simultaneously with second sub-district.

First cell configuration in the neighbor cell is become to belong to the second place district set of second sub-district, thereby make win sub-district and second sub-district belong to the set of second place district.

In addition, the present invention also provides a kind of changing method based on described network system, according to following steps the user is switched to Target cell from the cell-of-origin under same wireless access entity:

The wireless access entity is set up relevant Radio Resource in advance in Target cell, and sends the reprovision system order of radio physical layer/radio link layer to the user, and the user realizes and Target cell synchronous;

The wireless access entity sends the user plane update inquiry information to target core network, after target core network and source core net are carried out information and data mutual, target core network sends user plane to this wireless access entity and upgrades response message, the user in the cell-of-origin relevant Radio Resource and the Internet resources between user and the source core net be released.

Wherein, if Target cell belongs to different lane place set with the cell-of-origin, then upgrade the lane place set.

Based on the changing method of described network system, user cell-of-origin from source wireless access entity under same core net is switched to the Target cell that Target Wireless inserts entity according to following steps:

Source wireless access entity inserts entity to Target Wireless and sends handoff request message, Target Wireless inserts entity and sets up Internet resources and send switching response message to source wireless access entity, source wireless access entity sends switching command message to the user, and the user realizes and Target Wireless inserts the synchronous of entity;

Target Wireless inserts entity and sends the user plane update inquiry information to affiliated core net, core net switches to Target Wireless with user plane from source wireless access entity and inserts on the entity, and insert entity transmission user plane to Target Wireless and upgrade response message, Internet resources between source wireless access entity and the Target Wireless access entity and the Internet resources between source wireless access entity and the user are released.

Compared with prior art, the present invention proposes a kind of new-type network architecture.In this structure, the different districts under wireless access entity can belong to different lane place.The present invention has also provided the method that realizes this new network architecture from conventional network architecture in the lump.Based on this new network architecture, a wireless access entity need not to be connected entirely with the IAD of all core net, just can realize the switching of real-time class business and non real-time class business simultaneously.

Based on the changing method of network system of the present invention, can reduce the switching complexity between the different MME/UPE, reduce switching simultaneously according to break period, improve and switch reliability.This changing method is not that real-time class or non real-time class are distinguished to business, and switching professional and class business in real time all is suitable for to the non real-time class.In addition, realize that the algorithm of lane place and cell relations also is very easy to realize, and have good autgmentability and applicability.

In addition, the new network architecture that the present invention proposes can be applied to the 3GPP system of evolution, can also be applied to other novel honeycomb and move wireless communication system, as the 4G system etc.

Below in conjunction with the drawings and specific embodiments the present invention is further described.

Description of drawings

Fig. 1 is existing tree network structural representation;

Fig. 2 is the handoff procedure schematic diagram of prior art between two RA entities under the same MME/UPE;

Fig. 3 is the handoff procedure schematic diagram of prior art between the professional RA entity of two non real-time classes under the different MME/UPE;

Fig. 4 is the handoff procedure schematic diagram of prior art between two under the different MME/UPE professional RA entities of real-time class;

Fig. 5 is a new network structural representation of the present invention;

Fig. 6 is that the present invention is switched message flow chart between the sub-district in diverse location district under the same RA entity;

Fig. 7 is that the present invention is in the switching message flow chart between the different RA entities under the same MME/UPE;

Fig. 8 is that the present invention adopts method one to realize that neighbor cell Cell belongs to the layoutprocedure schematic diagram of a lane place set TA;

Fig. 9 is that the present invention adopts method two to realize that neighbor cell Cell belongs to the layoutprocedure schematic diagram of a lane place set TA.

Embodiment

New network architecture proposed by the invention, changed the tree network relation between lane place in traditional cell mobile communication systems, RA entity (as eNodeB) and the sub-district, set up the cyberrelationship of a kind of new lane place, RA entity (as eNodeB) and sub-district, also proposed how to realize the method for this cyberrelationship.

The different sub-district Cell that the present invention proposes under the RA entity can belong to different lane place TA, and same Cell can belong to a plurality of TA simultaneously; Adjacent C ell between the adjacent R A entity has identical TA (can be a plurality of TA values).Of particular note: the RA entity among the present invention refers to entity in the Radio Access Network, rather than Radio Access Network.The RA entity is the upper level network entity of UE, and for example, for evolution 3G system, the RA entity refers to eNodeB.In the present invention, for convenience of description, hereinafter with accompanying drawing in, replace the RA entity with " RA ", same RA1 or RAX all represent the RA entity.

The present invention also proposes, utilize this new-type network architecture, RA entity need not the IAD (AGW with all core net, Access Gateway) connects, just can realize the switching of real-time class business and non real-time class business, and the changing method that proposes can reduce the break period of switching between the different MME/UPE.

The architecture of cell mobile communication systems is made up of different access systems anchor point (IASA, Inter-Access System Anchor), wireless access gateway (rGW, Radio access Gateway), RA entity and UE among the present invention.Wherein: RA is a UE upper level network entity, is wave point between UE and the RA.RGW is the expression of MME/UPE functional entity, and being connected between RA entity and the rGW can be the relation of multi-to-multi, and just a rGW can be connected to a plurality of RA entities, and a RA entity can be connected on a plurality of rGW simultaneously.IASA represents gateway and the anchor point entity that cell mobile communication systems is connected with external network, is similar to the GGSN in traditional 3GPP network, is equivalent to IASA in the evolution 3GPP system.Equally, being connected between rGW and the IASA is the relation of multi-to-multi.If MME and UPE functional separation, then the rGW among Fig. 5 only represents UPE; If MME and UPE functional separation and UPE and IASA merge, then the rGW among Fig. 5 only represents the merged entity of UPE and IASA.In addition, if MME and UPE merge, then TA represents the mobile management zone; Open if MME and UPE divide, what then TA represented is the band of position that UPE serves.UE at a time can only be connected on a UPE entity and the MME entity, and can not be connected on a plurality of UPE or a plurality of MME entity.

As shown in Figure 5, four sub-district Cell1 are arranged, Cell2, Cell3, Cell4 under the RA1.Cell1 wherein, Cell2, Cell3 belongs to TA1, and TA1 is the lane place of being managed by rGW1.Cell4 then belongs to TA2, and TA2 is the lane place of being managed by rGW2.Therefore, RA1 need with management TA1, the rGW1 of TA2 and rGW2 link to each other.Cell5 under the RA2, Cell6, Cell7, Cell8 all belong to TA2.Therefore, RA2 can be only and the rGW2 of management TA2 be connected, and rGW1 or rGW3 are continuous for RA2, then do not do requirement.Similarly, five sub-district Cell9-Cell13 are arranged under the RA3.Wherein Cell9 belongs to TA2, Cell10, and Cell11 belongs to TA3, and Celll2, Cell13 belongs to TA4, so RA3 need link to each other with rGW2, rGW3 and the rGW4 of management TA2, TA3 and TA4.

Below, elaborate the specific implementation method of new network architecture of the present invention.

New network architecture of the present invention does not need brand-new structure, but according to the situation of real cell planning, on the basis of traditional tree l network structure, increase some connections, but be different from the complete existing settling mode that connects of the S1-Flex that proposes among the TR23.882 again, thereby can very easily realize lane place and cell relations, and have good autgmentability and applicability.When the building network structure, core is that the adjacent C ell between the structure adjacent R A entity has identical lane place TA.The method of structure has a variety of, will provide two kinds here and realize that the neighbor cell Cell between the adjacent R A entity has the method for same position district TA.

Clearer for what illustrate, at first define several basic conceptions:

1, neighbor cell:

If do not have other sub-districts Cell between sub-district Cell X and the Cell Y, claim that then sub-district Cell X and CellY are neighbor cells.

2, adjacent entities:

If sub-district Cell X and Cell Y are neighbor cells, and sub-district Cell X belongs to entity RA X, and sub-district Cell Y belongs to entity RA Y, claims that then entity RA X and RA Y are adjacent entities.

3, band of position set equality:

Pointed out by the TR23.882 of 3GPP system: a sub-district Cell can belong to a plurality of band of position TA simultaneously.If sub-district Cell X belongs to band of position TAX1, TAX1, TAX2 ..., TAXn is designated as band of position set TA (X), promptly TA (X)=TAX1, TAX2 ..., TAXn}.Like this, sub-district Cell X ∈ TA (X).Similarly, sub-district Cell Y ∈ TA (Y), TA (Y)=TA Y1, TAY 2 ..., TAYn}.

If sub-district Cell X and sub-district Cell Y are neighbor cells, and corresponding respectively band of position set TA (X) and TA (Y) equate that just TA (X)=TA (Y) then claims neighbor cell Cell X and Cell Y to have identical lane place thresholding.It is emphasized that the TA (X) here is band of position set with TA (Y), TA (X)=TA (Y), all elements that must satisfy band of position TA (X) and TA (Y) lining all equates.For example: when TA (X)={ TA (Y)={ TA2 during TA1}, can think TA (X) and two band of position set equalities of TA (Y) for TA1, TA2}; And when TA (X)={ TA (Y)={ TA2, during TA3}, the TA (X) and TA (Y) band of position are also unequal for TA1, TA2}.

After the above-mentioned definite conception, when making up network architecture of the present invention, establishing sub-district Cell X and Cell Y and be the neighbor cell Cell under the adjacent R A entity, is not that the adjacent C ell under the adjacent R A entity does not carry out following operation.

1, affiliated as if set TA of the band of position under the Cell X of sub-district (X) and sub-district Cell Y band of position set TA (Y) is identical, be TA (X)=TA (Y), illustrate that then sub-district Cell X and Cell Y belong to a band of position TA, do not do any processing to Cell X and Cell Y this moment.

2, unequal if TA (X) is gathered in the Cell X affiliated band of position in sub-district with the band of position set TA (Y) under the Cell Y of sub-district, then can have same position district TA by neighbor cell Cell X and the Cell Y between any one realization adjacent R A entity in the following dual mode:

Method one: make that any sub-district is designated as Cell X among the neighbor cell Cell between the adjacent R A entity, affiliated lane place set is designated as TA (X), and another sub-district is designated as Cell Y, and affiliated lane place set is designated as TA (Y).Now sub-district Cell X is configured to and belongs to the lane place gather TA (Y); And sub-district Cell Y is configured to belong to lane place set TA (X).That is to say by after the preparation, sub-district CellX and Cell Y have identical lane place gather TA value: TA ' (X)=TA ' (Y).

Method two: same, make that arbitrary sub-district is designated as CellX among the neighbor cell Cell between the adjacent R A entity, affiliated lane place set is designated as TA (X), and another sub-district is designated as Cell Y, affiliated lane place set is designated as TA (Y).With one of them sub-district Cell X, be configured to only belong to the lane place set TA (Y) of its neighbor cell Cell Y.Like this, sub-district Cell X and Cell Y will belong to lane place set TA (Y) simultaneously.

3, in the above-mentioned steps 2, employing method one or method two are configured, if the neighbor cell Cell of the another one direction of one of them sub-district Cell is not when belonging to same RA entity simultaneously, then step 2 process need repeats, till adjacent sub-district Cell has identical lane place set TA value.

4, according to

step

2 and 3 configuration result, the RA entity that the lane place set TA value of sub-district Cell is changed is connected with the pairing core net of TA value.

Below, the layoutprocedure to above-mentioned two kinds of methods describes by object lesson respectively:

Example 1: as shown in Figure 8, employing method one realizes that neighbor cell Cell belongs to a lane place set TA.

Fig. 8 left side is traditional tree network structure, wherein: four sub-district Cell1 are arranged, Cell2, Cell3, Cell4 under the RA1.Sub-district Cell1-4 belongs to TA1, and TA1 is the lane place of being managed by rGW1.Four sub-district Cell5-8 are arranged under the RA2, belong to the lane place TA2 that manages by rGW2.Similarly, five sub-district Cell9-Cell13 are arranged under the RA3, belong to lane place TA3, manage by rGW3.

Fig. 8 right side is by the network configuration after method one configuration.It is to carry out following configuration from the conventional network structure in left side: as seen from the figure, Cell4 and Cell5, Cell8 and Cell9 are neighbor cells.With under the former RA1 entity, the sub-district Cell4 that belongs to lane place set TA1 is configured to belong to simultaneously the lane place set TA2 of its neighbor cell Cell5, simultaneously with under the RA2 entity, the sub-district Cell5 that belongs to lane place set TA2 is configured to belong to simultaneously the lane place set TA1 of its neighbor cell Cell4; Similarly, with under the RA2 entity, the sub-district Cell8 that belongs to lane place set TA2 is configured to belong to simultaneously the lane place set TA3 of its neighbor cell Cell9, with under the RA3 entity, the sub-district Cell9 that belongs to lane place set TA3 is configured to belong to simultaneously the lane place set TA2 of its neighbor cell Cell8.In addition, increase the rGW2 interface of RA1 entity and management position district set TA2; Increase the rGW1 interface of RA2 entity and management position district set TA1, and the rGW3 interface of management position district set TA3; Increase the rGW2 interface of RA3 entity and management position district set TA2.

Example 2: as shown in Figure 9, adopt method two to realize that neighbor cell Cell belongs to a lane place set TA.

Fig. 9 right side is by the network configuration of method two after the configuration of the traditional structure in left side.It is to carry out following configuration from the conventional network structure in left side: with under the former RA1 entity, the sub-district Cell4 that belongs to lane place set TA1 is configured to only belong to the lane place set TA2 of its neighbor cell Cell5, with under the RA2 entity, the sub-district Cell8 that belongs to lane place set TA2 is configured to only belong to the lane place set TA3 of its neighbor cell Cell9.In addition, increase the rGW2 interface of RA1 entity and management position district set TA2; Increase the rGW3 interface of RA2 entity and management position district set TA3.

In addition, as shown in Figure 5, establish among a plurality of sub-district Cell under the RA entity, a part of sub-district belongs to lane place TA (X), and a part of sub-district belongs to lane place TA (Y), also can be that some sub-district Cell belong to lane place TA (X) and TA (Y) simultaneously.The RA entity links to each other by the S1 interface with the MME/UPE of management position district TA (X).The RA entity links to each other by the S1 interface with the MME/UPE of management position district TA (Y).If UE has activated one or more IP bearer services under this RA entity, these IP bearer services can be the combinations of services of real-time class and non real-time class.

When UE moves to sub-district Cell Y from the sub-district Cell X that this RA entity next one belongs to lane place TA (X), sub-district Cell Y does not belong to lane place TA (X), but belong to another lane place TA (Y), in this case, the switching message flow between the sub-district Cell of diverse location district TA is specifically as shown in Figure 6 under the same RA entity:

601, one or more IP bearer services (IP Bearer) have been set up between user equipment (UE) and RA entity, source rGW, IASA;

602, UE is to the affiliated relevant measurement result of RA entity report;

603, this RA entity is according to the measurement result of UE report, decision with this UE from the cell-of-origin switches to another Target cell under it;

604, the RA entity is set up relevant Radio Resource in advance in Target cell;

605, the RA entity sends the reprovision system order of radio physical layer/radio link layer (L1/L2) to UE;

606, the Target cell under UE and the RA entity is realized synchronously;

607, UE sends radio physical layer/radio link layer (L1/L2) reprovision system to Target cell and finishes response;

608, the RA entity sends the user plane update inquiry information to target rGW;

609, target rGW sends the user's context request message to source rGW;

610, source rGW sends user context data to target rGW;

611, target rGW sends the user plane routing update message to IASA;

612, IASA switches to the user plane route on the target rGW from source rGW;

613, target rGW sends user plane renewal response message to the RA entity, and the expression user plane has switched on the target rGW;

614, the RA entity discharges the relevant Radio Resource of this UE in the cell-of-origin and the Internet resources of UE and source rGW;

615, one or more IP Bearer of UE have switched on Target cell, target rGW and the IASA of RA entity;

616, if Target cell belongs to different lane place set TA with the cell-of-origin, then also need to carry out the renewal process of band of position TA.

For example, when the sub-district Cell3 of the UE among Fig. 5 under the RA1 entity moves to Cell4, because sub-district Cell3 belongs to lane place set TA1, and sub-district Cell4 belongs to lane place set TA2, therefore need carry out the switching between the sub-district Cell of set TA in diverse location district under the same RA1 entity.At this moment, the source rGW among Fig. 6 is rGW1, and target rGW is rGW2.

Another kind of situation is: when UE when the sub-district Cell X of a source RA entity moves to the sub-district Cell Y of target RA entity, because sub-district Cell X and Cell Y belong to same lane place set TA, therefore, need carry out the switching between the different RA entities under the same MME/UPE, the concrete message flow that switches, as shown in Figure 7:

701, one or more IP bearer services (IP Bearer) have been set up between user equipment (UE) and source RA entity, rGW, IASA;

702, UE is to the affiliated relevant measurement result of source RA entity report;

703, RA entity in source is according to the measurement result of UE report, and decision switches to the cell-of-origin of this UE under the RA entity of source the Target cell under the target RA entity;

704, RA entity in source sends handoff request message to target RA entity;

705, target RA entity is set up related resource according to the handoff request message of source RA entity;

706, target RA entity sends to switch to source RA entity and finishes response;

707, RA entity in source sends switching command message to UE;

708, UE and target RA entity are realized synchronously;

709, UE reshuffles to target RA entity transmission radio physical layer/radio link layer (L1/L2) and finishes response;

710, target RA entity sends the user plane update request to rGW;

711, rGW switches to user's user plane on the target RA entity from source RA entity, and sends user plane renewal response message to target RA entity, and the expression user has switched on the target RA entity;

712, target RA entity discharges the Internet resources between this target RA entity and the source RA entity;

713, the Internet resources between release UE and the source RA entity;

714, one or more IP Bearer of UE have switched on Target cell, rGW and the IASA of target RA entity.

For example, when the sub-district Cell4 of the UE among Fig. 5 under the RA1 entity moves to sub-district Cell5 under the RA2 entity, because sub-district Cell4 and Cell5 belong to a lane place set TA2, so RA1 and switching between the RA2 belong to the sub-district switching between the different RA entities under the same MME/UPE.At this moment, the source RA entity among Fig. 7 is the RA1 entity, and target RA entity is the RA2 entity, and rGW is rGW2.

In addition, for as shown in Figure 5 when UE when sub-district Cell3 moves to Cell5, need through above-mentioned two processes as Fig. 6 and Fig. 7, promptly carry out under the same RA1 entity sub-district Cell3 earlier to the switching between the Cell4 of sub-district, wherein sub-district Cell3 belongs to lane place set TA1, and sub-district Cell4 belongs to lane place set TA2, and rGW1 switches to rGW2 simultaneously; Carry out the switching between RA1 and the RA2 entity then, the sub-district Cell4 under the RA1 entity is switched to sub-district Cell5 under the RA2 entity.By these two kinds of handoff procedures, the handoff procedure of the complexity between the former MME/UPE is decomposed into two simply, reliably reaches the good handoff procedure of real-time.

As seen, under new network architecture of the present invention,, can only be the repetition of aforementioned several embodiment situations for the switching that UE causes in any moving between cells.Therefore,, the present invention is based on the changing method of described network architecture, can reduce the switching complexity between the different MME/UPE, reduce switching simultaneously, improve and switch reliability according to break period than the handover scheme of prior art.

In addition, it is emphasized that: in traditional 3GPP system,, therefore also exist the situation that a sub-district Cell belongs to a plurality of lane place TA because network configuration adopts Iu-Flex to connect entirely.And a sub-district Cell of the present invention belongs to the situation of a plurality of lane place TA, is meant that different districts Cell can have different lane place TA under the RA entity (as eNodeB).And a plurality of sub-district Cell belong to a plurality of different lane place TA under RA entity, and therefore, this RA entity just need be connected with the rGW of management these lane place TA.Be simply described as follows as for the paging aspect: adopt the technology of the present invention, higher level's entity (as rGW) of RA entity (as eNodeB) is done paging according to lane place TA to corresponding RA entity, RA entity (as eNodeB) determines to do paging to the sub-district Cell that belongs to this lane place TA according to the lane place TA in the beep-page message, and can not do paging to the sub-district Cell that does not belong to this lane place TA.

Above-described embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.

Claims

1. network system, comprise that the wireless access entity reaches several sub-districts by this wireless access entity management, it is characterized in that: there is the situation that belongs to the diverse location district in the sub-district under the described wireless access entity, and the neighbor cell between the adjacent wireless access entity has identical lane place set.

2. the system as claimed in claim 1 is characterized in that: if the neighbor cell between any two adjacent wireless access entities, the lane place set equality under it does not then need to do any processing; Otherwise neighbor cell is configured to belong to a lane place set.

3. system as claimed in claim 2 is characterized in that: according to following steps neighbor cell is configured to belong to a lane place set:

4. system as claimed in claim 2 is characterized in that: according to following steps neighbor cell is configured to belong to a lane place set:

5. the changing method of network system as claimed in claim 1 is characterized in that, according to following steps the user is switched to Target cell from the cell-of-origin under same wireless access entity:

6. changing method as claimed in claim 5 is characterized in that: if Target cell belongs to different lane place set with the cell-of-origin, then upgrade the lane place set.

7. the changing method of network system as claimed in claim 1 is characterized in that, according to following steps user cell-of-origin from source wireless access entity under same core net is switched to the Target cell that Target Wireless inserts entity: