CN105848224A

CN105848224A - Cell switching method and system, and related devices

Info

Publication number: CN105848224A
Application number: CN201610140742.3A
Authority: CN
Inventors: 王建中
Original assignee: Shenzhen Jinli Communication Equipment Co Ltd
Current assignee: Shenzhen Jinli Communication Equipment Co Ltd
Priority date: 2016-03-11
Filing date: 2016-03-11
Publication date: 2016-08-10
Also published as: WO2017152757A1

Abstract

The embodiment of the invention provides a cell switching method, a cell switching system and related devices. The method comprises the steps that a source base station unicasts an RRC signaling comprising a DRX period to a UE in a connected state, wherein the RRC signaling is used for instructing the UE to keep in the connected state according to the DRX period; and the source base station makes a switching decision according to a measurement report reported by the UE, and sends a switching request message to the target base station according to the switching decision, wherein the switching request message is used for instructing a target base station to acquire the Context of the UE from an Anchor connected with the target base station, and establishing an RRC connection with the UE after that the UE is permitted to switch is determined according to the Context of the UE, and the target base station does not acquire the Context of the UE via the signaling sent by the source base station, but acquires the Context of the UE from the Anchor where the UE Context is stored. According to the method provided by the invention, the signaling load of the network can be reduced, and the switching speed of the cell can be increased.

Description

A kind of cell switching method, system and relevant device

Technical field

The present invention relates to mobile communication technology field, be specifically related to a kind of cell switching method, system and be correlated with Equipment.

Background technology

Along with the fast development of mobile communication technology, Long Term Evolution (English: Long Term Evolution, contracting Write: LTE) network obtained rapid deployment and universal, and LTE number of users sharp increase, with the many matchmakers of high-resolution Body stream business is the emerging service rapid emergence of representative, user terminal (English: User Equipment, abbreviation: UE) the upper application installed also gets more and more, and these application can trigger UE continually by building with LTE network Vertical wireless heterogeneous networks (English: Radio Resource Control, abridge: RRC) connect thus further Set up with application server and be connected to carry out data exchange, and the process of RRC connection establishment, namely UE From idle (English: IDLE) state enters and connects (English: the CONNECTED) process of state, this mistake Journey can produce substantial amounts of signaling, including RRC, wireless spread-spectrum technology (English: Radio Link Control, Abbreviation: RLC), medium access control (English: Media Access Control, MAC), thing abbreviation: Reason down control channel (English: Physical Downlink Control Channel, abbreviation: PDCCH) etc. Signaling.Additionally, each application application server also can continually by LTE network to UE pushed information, Cause paging flow process frequently, if RRC connection does not sets up in paging flow process, need first to set up RRC even Connecing, whole paging can produce more call signaling.Visible, set up RRC continually and connect and enter Row paging flow process can cause serious signaling traffic load to LTE network.

In current a solution occurred, network side can be the DRX cycle that UE configuration is longer, makes UE is maintained at connected state the most for a long time, with reduce UE set up RRC connect frequency, but, place Community switching flow can be carried out in moving process continually in the UE of connected state, still can give LTE network Causing serious signaling traffic load, to show that UE sets up with target BS that RRC is connected time-consuming for experimental data simultaneously Longer, it is difficult to meet the new business demand to low time delay.

Summary of the invention

Embodiments provide a kind of cell switching method, system and relevant device, network can be reduced Signaling traffic load, and accelerate the switch speed of community.

Embodiment of the present invention first aspect provides a kind of cell switching method, including:

Source base station includes the wireless of discontinuous reception DRX period to the user terminal UE clean culture being in connected state Resources control RRC signaling, described RRC signaling is used for indicating described UE to keep according to described DRX cycle At described connected state；

Source base station obtains the measurement report that described UE sends, and switches over decision-making according to described measurement report；

Described source base station sends handover request message according to described handover decisions to target BS, and described switching please Ask message described for indicating described target BS to obtain at the anchor point Anchor being connected with described target BS The context Context of UE, and after determine permission described UE switching according to the Context of described UE, Set up RRC with described UE to be connected.

Embodiment of the present invention second aspect provides a kind of cell switching method, including:

Target BS receives the handover request message that sends according to handover decisions of source base station, described handover decisions by The measurement report that described source base station sends according to UE is made；

Described target BS responds described handover request message and obtains at the Anchor being connected with described target BS Take the Context of described UE；

In the case of described target BS determines permission described UE switching according to the Context of described UE, Described target BS is set up RRC with described UE and is connected.

The embodiment of the present invention third aspect provides a kind of cell switching method, including:

Anchor receives target BS UE of transmission when receiving the handover request message that source base station sends The acquisition request of Context；

Described Anchor response is described obtains the request Context to the described target BS described UE of transmission, institute State the Context of UE for indicating described target BS determining permission institute according to the Context of described UE After stating UE switching, set up RRC with described UE and be connected.

Embodiment of the present invention fourth aspect provides a kind of cell switching method, including:

UE receives the RRC signaling including DRX cycle of source base station clean culture, and according to described DRX cycle It is maintained at connected state；

Described UE receives the measurement configuration parameter for community switching that described source base station sends, according to described survey Amount configuration parameter carries out cell measurement, and generates measurement report；

Described UE sends described measurement report to described source base station, and described measurement report is used for indicating described source base Stand and switch over decision-making according to described measurement report, and send switching according to described handover decisions to target BS Request message, described handover request message is for indicating described target BS from being connected with described target BS The Context of described UE is obtained at Anchor；

Described UE responds described target BS and is determining that the described UE of permission cuts according to the Context of described UE The RRC connection establishment instruction sent after changing, sets up RRC with described target BS and is connected.

The embodiment of the present invention the 5th aspect provides a kind of base station, including:

Transmitting element, for including the RRC signaling of DRX cycle, institute to the UE clean culture being in connected state State RRC signaling for indicating described UE to be maintained at described connected state according to described DRX cycle；

Acquiring unit, for obtaining the measurement report that described UE sends；

Decision package, for switching over decision-making according to described measurement report；

Transmitting element, for according to described handover decisions to target BS send handover request message, described in cut Change request message described for indicating described target BS to obtain at the Anchor being connected with described target BS The Context of UE, and after determine permission described UE switching according to the Context of described UE, with described UE sets up RRC and connects.

The embodiment of the present invention the 6th aspect provides a kind of base station, including:

Receive unit, for receiving the handover request message that source base station sends, described switching according to handover decisions The measurement report that decision-making is sent according to UE by described source base station is made；

Acquiring unit, obtains at the Anchor being connected with described base station for responding described handover request message The Context of described UE；

Determine unit, for determining whether that described UE switches according to the Context of described UE；

Connect unit, for described determine unit determine permission described UE switching in the case of, with described UE sets up RRC and connects.

The embodiment of the present invention the 7th aspect provides a kind of Anchor, including:

Receive unit, send when receiving the handover request message that source base station sends for receiving target BS UE Context acquisition request；

Transmitting element, for responding the described Context obtaining and asking to send described UE to described target BS, The Context of described UE is for indicating described target BS determining permission according to the Context of described UE After described UE switching, set up RRC with described UE and be connected.

Embodiment of the present invention eighth aspect provides a kind of UE, including:

Receive unit, for receiving the RRC signaling including DRX cycle of source base station clean culture；

Control unit, for being maintained at connected state according to described DRX cycle；

Described reception unit, is additionally operable to receive the measurement configuration ginseng for community switching that described source base station sends Number；

Measuring unit, for carrying out cell measurement according to described measurement configuration parameter, and generates measurement report；

Transmitting element, for sending described measurement report to described source base station, described measurement report is used for indicating Described source base station switches over decision-making according to described measurement report, and according to described handover decisions to target BS Send handover request message, described handover request message be used for indicating described target BS from described target base Stand connect Anchor place acquisition described UE Context；

Described reception unit, is additionally operable to receive described target BS and is determining fair according to the Context of described UE The RRC connection establishment instruction sent after being permitted described UE switching；

Connect unit, be used for responding the instruction of described RRC connection establishment, set up RRC with described target BS Connect.

The embodiment of the present invention the 9th aspect provides a kind of cell handover system, including UE, source base station, target Base station and Anchor, wherein:

Described source base station, for including the RRC letter of DRX cycle to the described UE clean culture being in connected state Order；

Described UE, is used for receiving described RRC signaling, and is maintained at described connection according to described DRX cycle State；

Described source base station, is additionally operable to send the measurement configuration for community switching to the described UE being in connected state Parameter；

Described UE, is additionally operable to receive described measurement configuration parameter, carries out community according to described measurement configuration parameter Measure, and generate measurement report；

Described UE, is additionally operable to send described measurement report to described source base station；

Described source base station, is additionally operable to receive described measurement report, and switches over certainly according to described measurement report Plan；

Described source base station, is additionally operable to send handover request message according to described handover decisions to target BS；

Described target BS, is used for receiving described handover request message, and respond described handover request message from The Context of described UE is obtained at the described Anchor being connected with described target BS；

Described target BS, is additionally operable to after determine permission described UE switching according to the Context of described UE The instruction of RRC connection establishment is sent to described UE；

Described UE, is additionally operable to respond the instruction of described RRC connection establishment, sets up RRC with described target BS Connect.

In the current solution occurred, network side can be the DRX cycle that UE configuration is longer, makes UE Be maintained at connected state the most for a long time, with reduce UE set up RRC connect frequency, but, be in The UE of connected state can carry out community switching flow in moving process continually.Concrete, on the one hand, at station Between switching time, source base station and target BS need to send signaling by X2 interface and carry out the context (English of mutual UE Literary composition: Context), target BS decides whether to receive this UE according to the Context of UE, and sets up therewith RRC connects, and owing to the Context of UE can take bigger signaling space, each switching flow is all in signaling In carry the Context of UE and can cause serious signaling traffic load to LTE network；On the other hand, X2 interface Time delay relatively big, UE can be caused to set up with target BS, and that RRC is connected is the longest, it is difficult to meet new industry The business demand to low time delay.

In the embodiment of the present invention, source base station includes the RRC of DRX cycle to the UE clean culture being in connected state Signaling, this RRC signaling is used for indicating this UE to be maintained at this connected state according to this DRX cycle, this source base The measurement report reported according to this UE of standing switches over decision-making, and sends to target BS according to this handover decisions Handover request message, this handover request message is for indicating this target BS from being connected with this target BS Obtain the Context of this UE at Anchor, and determine permission this UE switching according to the Context of this UE After, to set up RRC with this UE and be connected, the signaling that target BS is not sent by source base station obtains this UE's Context, but the Context obtaining this UE at the Anchor of UE Context is had from storage, can drop The signaling traffic load of low network, and accelerate the switch speed of community.

Accompanying drawing explanation

For the technical scheme being illustrated more clearly that in the embodiment of the present invention, institute in embodiment being described below The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is the one of the present invention A little embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, also Other accompanying drawing can be obtained according to these accompanying drawings.

Fig. 1 is a kind of community switching flow schematic diagram that the embodiment of the present invention provides；

Fig. 2 is the first embodiment schematic flow sheet of a kind of cell switching method that the embodiment of the present invention provides；

Fig. 3 is the second embodiment schematic flow sheet of a kind of cell switching method that the embodiment of the present invention provides；

Fig. 4 is the 3rd embodiment schematic flow sheet of a kind of cell switching method that the embodiment of the present invention provides；

Fig. 5 is the 4th embodiment schematic flow sheet of a kind of cell switching method that the embodiment of the present invention provides；

Fig. 6 is that a kind of of Anchor that the embodiment of the present invention provides disposes schematic diagram；

Fig. 7 is that the another kind of of Anchor that the embodiment of the present invention provides disposes schematic diagram；

Fig. 8 is an example structure schematic diagram of a kind of base station that the embodiment of the present invention provides；

Fig. 9 is an example structure schematic diagram of a kind of base station that the embodiment of the present invention provides；

Figure 10 is an example structure schematic diagram of a kind of Anchor that the embodiment of the present invention provides；

Figure 11 is the first embodiment structural representation of a kind of UE that the embodiment of the present invention provides；

Figure 12 is the second example structure schematic diagram of a kind of UE that the embodiment of the present invention provides；

Figure 13 is an example structure schematic diagram of a kind of cell handover system that the embodiment of the present invention provides.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly Chu, it is fully described by, it is clear that described embodiment is a part of embodiment of the present invention rather than all Embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative labor The every other embodiment obtained under dynamic premise, broadly falls into the scope of protection of the invention.

UE described by the embodiment of the present invention can include smart mobile phone (as Android phone, iOS mobile phone, Windows Phone mobile phone etc.), panel computer, palm PC, notebook computer, mobile internet device (English: Mobile Internet Device, MID), Wearable and machine type communication (English abbreviation: Literary composition: Machine Type Communication, abbreviation: MTC) terminal etc., above-mentioned UE is only citing, And it is non exhaustive, including but not limited to above-mentioned UE.

Refer to Fig. 1, a kind of community switching flow schematic diagram provided for the embodiment of the present invention.Basic switching Flow process is as follows:

A) when radio bearer is set up, source base station (i.e. Source eNB) issues Measurement Control Message is to UE, for controlling the cell measurement procedure of the UE of connected state.

B) UE reports Measurement Reports according to measurement result.

C) source base station switches over decision-making according to measurement report.

D) after source base station determines switching, source base station issues Handover Request message to target BS (i.e. Target eNB), notice target BS prepares switching.

E) target BS obtains the Context of UE at the Anchor connected, and according to the Context of UE Carry out access judgement.

If f) being judged as resource access, then target BS prepares switching and source base station is sent Handover Request Acknowledge message.

G) source base station issues the RRC Connection comprising mobility control Information Reconfiguration to UE, instruction switching starts.

H) UE carries out the random access procedure of target BS, completes the uplink synchronous between UE and target BS.

I) when UE is successfully accessed Target cell, UE sends RRC Connection Reconfiguration Complete is over to target BS, instruction switching flow, and target BS can send data to UE.

J) downlink path data conversion process is performed.

K) target BS is by sending UE Context Release message informing source base station handover success, and touches Rise base station resource release.

L) UE Context Release message, the Radio Resource that source base station release UE Context is relevant are received With chain of command resource, so far finishing switching.

It can be seen that do not carry the Context of UE in Handover Request message, target BS is receiving During handover request (the i.e. Handover Request) message that source base station sends, target BS is directly from it even Obtain the Context of UE at the Anchor connect, and perform follow-up switching flow, due to the Context of UE Bigger signaling space can be taken, carry the Context of UE the most in the signaling but obtain at Anchor Mode can be substantially reduced the signaling traffic load of network.Additionally, due to the X2 between source base station and target BS Interface time delay is relatively big, and target BS obtains the Context of UE at Anchor, can when allowing UE to access It is connected directly setting up RRC according to Context with UE of UE, such that it is able to the switch speed of quickening community.

Referring to Fig. 2, the first embodiment flow process for a kind of cell switching method of embodiment of the present invention offer is shown It is intended to.Cell switching method described in the present embodiment is mainly described from source base station side, bag Include following steps:

S201, source base station include the RRC signaling of DRX cycle to the UE clean culture being in connected state, described RRC signaling is used for indicating described UE to be maintained at described connected state according to described DRX cycle.

Wherein, in existing LTE system, (English: 3rd Generation according to third generation partner program Partnership Project, abbreviation: 3GPP) regulation [TS 36.300], UE only has two kinds of RRC state:

(1) RRC_IDLE (Idle state), this state comprises following characteristics:

A) PLMN selects

B) DRX of NAS configuration

C) system information broadcasted

D) paging

E) mobility based on cell reselection

F) it is that UE distributes a unique ID in TA

G) eNB side does not store the RRC context (Context) of UE

H) D2D communication sends and receives

I) D2D finds and monitoring

(2) RRC_CONNECTED (connected state), this state comprises following characteristics:

A) UE has E-UTRAN-RRC connection

B) UE has Context at E-UTRAN

C) E-UTRAN knows which community UE belongs to

D) network can Phase Receiver mutual with UE and transmission data

E) mobility that network controls

F) adjacent cell measurement

G) D2D communication sends and receives

H) D2D finds and monitoring

I) from PDCP/RLC/MAC aspect:

I.UE can Phase Receiver mutual with network and transmission data

Ii.UE detection is for the control signaling of shared data channel

Wherein, the fundamental mechanism of DRX is for being in the UE of connected state one DRX cycle of configuration.DRX week Phase is made up of " On Duration " and " Opportunity for DRX ", in " On Duration " period, UE monitors and receives PDCCH, and namely UE is in the activation phase；In " the Opportunity for DRX " phase Between, UE does not receive the data of down channel to save power consumption, and namely UE is in hibernation.Base station is permissible The length of allocation activation phase and rest period, when DRX cycle is longer, base station is come by clean culture RRC signaling UE can be controlled and be in connected state for a long time.

S202, source base station obtain the measurement report that described UE sends, and switch over according to described measurement report Decision-making.

Concrete, this source base station judges whether according to this measurement report to meet the switching criterion (example preset Such as relative signal intensity criterion, there is the relative signal intensity criterion that thresholding specifies, the phase with hysteresis margin To signal strength criterion and there is hysteresis margin or relative signal intensity criterion etc. that thresholding specifies) community, And switch the need of between standing, and then make handover decisions.

S203, described source base station send handover request message according to described handover decisions to target BS, described Handover request message is for indicating described target BS to obtain at the anchor point Anchor being connected with described target BS Take the context Context of described UE, and determining that the described UE of permission cuts according to the Context of described UE After changing, set up RRC with described UE and be connected.

Wherein, the Anchor in the embodiment of the present invention can use in centralized deployment, i.e. LTE network many Individual base station is simultaneously connected to an Anchor, an Anchor and services multiple base station simultaneously, can improve system Base Band Unit in efficiency, such as novel radio access network framework C-RAN framework (English: Bandwidth Based Unit, abbreviation: BBU) pond；Distributed deployment can also be used, be each Base station is separately configured an Anchor, can improve robustness and the stability of system.Anchor is mainly used in The Context, Anchor of storage UE can be as parts for base station, it is also possible to as an independent net Network entity.Optical fiber can be used between Anchor with base station to be connected, to improve the transmission speed of data.

Wherein, base station can report the Context, Anchor of UE of service also may be used to the Anchor connected With from core-network side, such as Mobility Management Entity (English: Mobile Management Entity, abbreviation: MME) Context of the UE that respective base station is serviced is obtained.The Anchor storage of centralized deployment has even The Context of the some or all of UE that the base station connect is serviced.The Anchor storage of distributed deployment has even The Context of the some or all of UE that the base station connect and base station to be selected (such as adjacent base station) are serviced, By the base station each connected, the UE Context self stored can be sent to base station to be selected between Anchor The Anchor connected.

Furthermore it is preferred that, the Context of UE also can be updated by Anchor, for adding new UE Context, and when the residual memory space of Anchor is less can by do not have business transmission (include send out The business of rising and the business of reception) Context of the lasting duration UE that exceedes preset duration (such as 1 day) deletes Remove.

Concrete, when this source base station switches between this handover decisions is for station, by X2 interface to this target BS Sending handover request message, this handover request message can be HANDOVER REQUEST signaling, should HANDOVER REQUEST signaling does not carry the Context of this UE, and this target BS receives this At the Anchor that it connects, the Context of this UE is directly obtained after HANDOVER REQUEST signaling, If this target BS determines permission this UE switching according to the Context of this UE, then this target BS is permissible Directly set up RRC with this UE to be connected.

In the embodiment that some are feasible, if this target BS is obtaining this UE's at this Anchor Context failure, then this target BS can obtain to this source base station transmission Context and ask, thus this source Base station can send the Context of this UE again by X2 interface to this target BS, it is ensured that target BS It is rapidly switched to existing switching flow when obtaining the Context failure of UE at Anchor proceed.

Referring to Fig. 3, the second embodiment flow process for a kind of cell switching method of embodiment of the present invention offer is shown It is intended to.Cell switching method described in the present embodiment is mainly described from target BS side, Comprise the following steps:

S301, target BS receive the handover request message that source base station sends, described switching according to handover decisions The measurement report that decision-making is sent according to UE by described source base station is made.

S302, described target BS respond described handover request message from being connected with described target BS The Context of described UE is obtained at Anchor.

S303, described target BS according to the Context of described UE determine allow described UE switching feelings Under condition, described target BS is set up RRC with described UE and is connected.

Wherein, this handover request message does not carry the Context of this UE.

Concrete, this target BS responds this handover request message, and directly at the Anchor that it connects, acquisition should The Context of UE, if determining permission this UE switching, then this target BS according to the Context of this UE Can directly set up RRC with this UE to be connected.

In the embodiment of the present invention, target BS response source base station send handover request message, from this target Obtain the Context of UE at the Anchor that base station connects, and determine permission at the Context according to this UE In the case of this UE switching, setting up RRC with this UE and be connected, target BS is not sent by source base station Signaling obtains the Context of this UE, but has at the Anchor of UE Context from storage and obtain this UE's Context, can reduce the signaling traffic load of network, and accelerate the switch speed of community.

Referring to Fig. 4, the 3rd embodiment flow process for a kind of cell switching method of embodiment of the present invention offer is shown It is intended to.Cell switching method described in the present embodiment is mainly described from Anchor side, bag Include following steps:

S401, Anchor receive what target BS sent when receiving the handover request message that source base station sends The acquisition request of the Context of UE.

Wherein, this Anchor connects this source base station and multiple base station to be selected, and this target BS is the plurality for the treatment of Select in base station, and store this source base station and the part of the plurality of base station to be selected service or all UE Context, i.e. Anchor centralized deployment, multiple base stations connect same Anchor, base station and Anchor Between be many-to-one relation.

Or, this target BS is in the plurality of base station to be selected, in this source base station and this base station to be selected Each base station be connected with an Anchor, the Anchor that each base station connects stores this each The part of the adjacent base station service of base station and this each base station or the Context of all UE, i.e. Anchor Distributed deployment, each base station each connects an Anchor, is man-to-man between base station and Anchor Relation.

Wherein, Anchor can receive and store the Context of the UE that the base station of connection reports, it is also possible to from Core-network side, such as MME, obtain the Context of the UE that respective base station is serviced.

S402, described Anchor response is described obtains request to the described target BS described UE's of transmission Context, the Context of described UE are for indicating described target BS at the Context according to described UE After determining permission described UE switching, set up RRC with described UE and be connected.

Concrete, this handover request message does not carry the Context of this UE, and this target BS needs from connection This Anchor at obtain the Context of this UE, then send the obtaining of Context of this UE to this Anchor Take request, this acquisition request can be carried the identification information of this UE, after receiving this acquisition request, this Anchor Identification information according to this UE searches the Context of this UE of storage, and sends this UE to this target BS Context, thus this target BS determine according to the Context of this UE permission this UE switching after, i.e. RRC can be set up with this UE to be connected.

S403, described Anchor delete when residual memory space is less than or equal to preset value does not has business to transmit Lasting duration reach the Context of UE of preset duration.

Concrete, this Anchor can will not have business to transmit when the residual memory space of Anchor is less (including initiation business and reception business) lasting duration exceedes the UE's of preset duration (such as 1 day) Context deletes.

In the embodiment of the present invention, Anchor receives the acquisition request of the UE Context that target BS sends, and rings Send the Context of this UE after should obtaining request to this target BS, then this target BS is according to this UE Context determine permission this UE switching after, RRC can be set up with this UE and be connected；Additionally, this Anchor Can delete when residual memory space is less and not have the business lasting duration of transmission to reach preset duration The Context of UE.Owing to Anchor storage has the Context of UE, target BS need not pass through source base station The signaling sent obtains the Context of UE, but directly obtains at Anchor, such that it is able to reduce network Signaling traffic load, and accelerate the switch speed of community.

Referring to Fig. 5, the 4th embodiment flow process for a kind of cell switching method of embodiment of the present invention offer is shown It is intended to.Cell switching method described in the present embodiment is mainly described from UE side, including with Lower step:

S501, UE receive the RRC signaling including DRX cycle of source base station clean culture, and according to described DRX Cycle is maintained at connected state.

Wherein, DRX cycle is made up of, at " On " On Duration " and " Opportunity for DRX " Duration " period, UE monitors and receives PDCCH, and namely UE is in the activation phase；At " Opportunity For DRX " period, UE does not receive the data of down channel to save power consumption, and namely UE is in dormancy Phase.When the DRX cycle that this source base station configures is longer, this UE can be in connected state for a long time.

S502, described UE receive the measurement configuration parameter for community switching that described source base station sends, according to Described measurement configuration parameter carries out cell measurement, and generates measurement report.

Concrete, this UE sets up after RRC is connected with this source base station, when radio bearer is set up, and this UE Receive the measurement configuration parameter that this source base station issues, and carry out cell measurement according to this measurement configuration parameter, enter And generate measurement report.

S503, described UE send described measurement report to described source base station, and described measurement report is used for indicating institute State source base station and switch over decision-making according to described measurement report, and send out to target BS according to described handover decisions Send handover request message, described handover request message be used for indicating described target BS from described target BS The Context of described UE is obtained at the Anchor connected.

Concrete, this measurement report is reported this source base station by this UE, and this source base station does according to this measurement report Go out handover decisions, determine stand between switching time send handover request message, and then this mesh to target BS Mark base station obtains the Context of this UE at the Anchor connected.

S504, described UE respond described target BS and are determining that permission is described according to the Context of described UE The RRC connection establishment instruction sent after UE switching, sets up RRC with described target BS and is connected.

Concrete, this target BS can be to after determine permission this UE switching according to the Context of this UE This UE sends the instruction of RRC connection establishment, and this UE can be with this after receiving the instruction of this RRC connection establishment Target BS is set up RRC and is connected.

In the embodiment of the present invention, UE receives the RRC signaling including DRX cycle of source base station clean culture, and root Connected state it is maintained at for a long time, the measurement configuration parameter that this UE sends according to source base station according to this DRX cycle Carry out cell measurement, and generate measurement report, this measurement report is reported this source base station so that this source base Stand and switch over decision-making according to this measurement report, and please to target BS transmission switching during switching between standing Seek message so that this target BS obtains the Context of this UE at the Anchor connected, and according to being somebody's turn to do The Context of UE sends the instruction of RRC connection establishment to this UE after determining permission this UE switching, thus should UE can set up RRC with this target BS and be connected, and this source base station is not in the signaling that target BS sends Carry the Context of this UE, but this target BS has acquisition at the Anchor of UE Context from storage The Context of this UE, such that it is able to reduce the signaling traffic load of network, and accelerates the switch speed of community.

For example, as shown in Figure 6, Anchor uses centralized deployment, it is adaptable to little base station dense deployment Scene, base station #1～base station #5 are connected to same Anchor, this Anchor storage base station #1～base station #5 clothes The Context of the UE being engaged in, at slot # 1, UE start enters Idle state, and this UE moves to slot # 2 Having video traffic to produce during place, this UE sets up RRC with base station #2 and is connected, and base station #2 can be by this UE's Context reports this Anchor, and this UE switches to connected state from this Idle state, and carries out community switching stream Journey, when this UE moves to slot # 3, video traffic terminates, and this UE continues to keep connected state, mobile to position When putting #4, if the signal intensity of measurement report instruction base station #3 (i.e. target BS) of this UE is better than base Stand the signal intensity of #2 (i.e. source base station), then base station #2 sends handover request message, base station #3 to base station #3 The Context of this UE is obtained from this Anchor, if base station #3 allows this UE to switch, then can be direct Set up and be connected with the RRC of this UE, thus be rapidly completed community switching, and reduce the signaling traffic load of network.

The most for example, as it is shown in fig. 7, Anchor uses distributed deployment, it is adaptable to macro base station disposes field Scape, base station #1～base station #7 connect an Anchor, each Anchor respectively and store connected base station The Context of the UE that the Context of the UE serviced and the adjacent base station of connected base station are serviced, The Anchor being connected with base station #2, in addition to storing the Context of the UE that base station #2 is serviced, also stores Adjacent base station (i.e. base station #1, base station #3, base station #4, base station #5, base station #6 and the base station #7) institute of base station #2 The Context of the UE of service, at slot # 1, UE start enters Idle state, and this UE moves to slot # 2 Having video traffic to produce during place, this UE sets up RRC with base station #2 and is connected, and base station #2 can be by this UE's Context reports the Anchor being connected with base station #2, and the Anchor that base station #2 connects can pass through base station The Anchor of the adjacent base station connection that the Context of this UE is sent to base station #2 by #2 stores, this UE Switching to connected state from this Idle state, and carry out community switching flow, this UE regards when moving to slot # 3 Frequently service ending, this UE continues to keep connected state, when moving to slot # 4, if the measurement report of this UE The signal intensity of instruction base station #3 (i.e. target BS) is better than the signal intensity of base station #2 (i.e. source base station), Then base station #2 sends handover request message to base station #3, and base station #3 obtains this UE from the Anchor that it connects Context, if base station #3 allows this UE to switch, then can directly set up the RRC with this UE and be connected, Thus be rapidly completed community switching, and reduce the signaling traffic load of network.

Refer to Fig. 8, for an example structure schematic diagram of a kind of base station that the embodiment of the present invention provides.This reality Execute the base station described in example, including:

Transmitting element 801, for including the RRC signaling of DRX cycle to the UE clean culture being in connected state, Described RRC signaling is used for indicating described UE to be maintained at described connected state according to described DRX cycle.

Acquiring unit 802, for obtaining the measurement report that UE sends.

Decision package 803, for switching over decision-making according to described measurement report.

Described transmitting element 801, is additionally operable to send handover request according to described handover decisions to target BS and disappears Breath, described handover request message is for indicating described target BS from the Anchor being connected with described target BS Place obtains the Context of described UE, and is determining permission described UE switching according to the Context of described UE After, set up RRC with described UE and be connected.

Wherein, described Anchor is connected with described source base station and multiple base station to be selected, and described target BS is In the plurality of base station to be selected one, described Anchor storage has described source base station and the plurality of base to be selected The Context of the UE of the service of standing.Or, described target BS is in multiple base station to be selected, described Each base station in source base station and described base station to be selected is connected with an Anchor, each base station described The Anchor storage connected has the UE's of the adjacent base station service of each base station described and each base station described Context。

Wherein, described transmitting element 801 sends handover request message according to described handover decisions to target BS Concrete mode be:

Between described handover decisions is for station during switching, sends handover request by X2 interface to target BS and disappear Breath.

It should be noted that the function of each unit of the base station of the embodiment of the present invention can be implemented according to said method Method in example implements, and it implements process and is referred to the associated description of said method embodiment, Here is omitted.

Refer to Fig. 9, for an example structure schematic diagram of a kind of base station that the embodiment of the present invention provides.This reality Execute the base station described in example, including:

Receive unit 901, for receiving the handover request message that source base station sends according to handover decisions, described in cut Change the measurement report that decision-making sends according to UE by described source base station to make.

Acquiring unit 902, for responding described handover request message at the Anchor being connected with described base station Obtain the Context of described UE.

Determine unit 903, for determining whether that described UE switches according to the Context of described UE.

Connect unit 904, for described determine unit determine permission described UE switching in the case of, with Described UE sets up RRC and connects.

Refer to Figure 10, for an example structure schematic diagram of a kind of Anchor that the embodiment of the present invention provides. Anchor described in the present embodiment, including:

Receive unit 1001, for receiving target BS when receiving the handover request message that source base station sends The acquisition request of the Context of the UE sent.

Transmitting element 1002, asks to send described UE's to described target BS for responding described acquisition Context, the Context of described UE are for indicating described target BS at the Context according to described UE After determining permission described UE switching, set up RRC with described UE and be connected.

The Context updating block 1003 of UE, for deleting when residual memory space is less than or equal to preset value The Context that lasting duration reaches the UE of preset duration is transmitted except there is no business.

It should be noted that the function of each unit of the Anchor of the embodiment of the present invention can be real according to said method The method executed in example implements, and it implements process and is referred to the associated description of said method embodiment, Here is omitted.

Refer to Figure 11, for the first embodiment structural representation of a kind of UE that the embodiment of the present invention provides. UE described in the present embodiment, including:

Receive unit 1101, for receiving the RRC signaling including DRX cycle of source base station clean culture.

Control unit 1102, for being maintained at connected state according to described DRX cycle.

Described reception unit 1101, the measurement for community switching being additionally operable to receive the transmission of described source base station is joined Put parameter.

Measuring unit 1103, for carrying out cell measurement according to described measurement configuration parameter, and generates measurement report Accuse.

Transmitting element 1104, for sending described measurement report to described source base station, described measurement report is used for Described source base station is indicated to switch over decision-making according to described measurement report, and according to described handover decisions to target Base station sends handover request message, described handover request message be used for indicating described target BS from described mesh The Context of described UE is obtained at the Anchor that mark base station connects.

Described reception unit 1101, is additionally operable to receive described target BS at the Context according to described UE Determine the RRC connection establishment instruction sent after allowing described UE switching.

Connect unit 1105, be used for responding the instruction of described RRC connection establishment, set up with described target BS RRC connects.

It should be noted that the function of each unit of the UE of the embodiment of the present invention can be according to said method embodiment In method implement, it implements process and is referred to the associated description of said method embodiment, this Place repeats no more.

Refer to Figure 12, for the second example structure schematic diagram of a kind of UE that the embodiment of the present invention provides. UE described in the present embodiment, including: at least one input equipment 1201；At least one outut device 1202；At least one processor 1203, such as CPU；With memorizer 1204, above-mentioned input equipment 1201, Outut device 1202, processor 1203 and memorizer 1204 are connected by bus 1205.

Wherein, above-mentioned input equipment 1201 is specifically as follows radio-frequency module, for receiving the signal that base station sends.

Above-mentioned outut device 1202 is specifically as follows radio-frequency module, for sending signal to base station.

Above-mentioned memorizer 1204 can be high-speed RAM memorizer, it is possible to for non-labile memorizer (non-volatile memory), such as disk memory.Above-mentioned memorizer 1204 is used for storing batch processing Code, above-mentioned input equipment 1201, outut device 1202 and processor 1203 are used for calling memorizer 1204 The program code of middle storage, performs to operate as follows:

Above-mentioned input equipment 1201, for receiving the RRC signaling including DRX cycle of source base station clean culture.

Above-mentioned processor 1203, for being maintained at connected state according to described DRX cycle.

Above-mentioned input equipment 1201, is additionally operable to receive the measurement configuration ginseng for community switching that source base station sends Number.

Above-mentioned processor 1203, is additionally operable to carry out cell measurement according to described measurement configuration parameter, and generates survey Amount report.

Above-mentioned outut device 1202, for sending described measurement report, described measurement report to described source base station For indicating described source base station to switch over decision-making according to described measurement report, and according to described handover decisions to Target BS sends handover request message, described handover request message be used for indicating described target BS from institute State the Context obtaining described UE at the Anchor that target BS connects.

Above-mentioned processor 1203, is additionally operable to respond described target BS and is determining according to the Context of described UE The RRC connection establishment instruction sent after allowing described UE switching, sets up RRC with described target BS and is connected.

Input equipment 1201, outut device 1202 and place in implementing, described in the embodiment of the present invention Reason device 1203 can perform described in the 4th embodiment of a kind of cell switching method that the embodiment of the present invention provides Implementation, it is possible to perform the embodiment of the present invention provide a kind of UE first embodiment described in The implementation of UE, does not repeats them here.

Referring to Figure 13, the example structure for a kind of cell handover system of embodiment of the present invention offer is shown It is intended to.Cell handover system described in the present embodiment, including UE1301, source base station 1302, target base Stand 1303 and Anchor1304, wherein:

Described source base station 1302, for including the RRC of DRX cycle to the described UE clean culture being in connected state Signaling.

Described UE1301, is used for receiving described RRC signaling, and is maintained at according to described DRX cycle described Connected state.

Described source base station 1302, is additionally operable to the described UE to being in connected state and sends the survey for community switching Amount configuration parameter.

Described UE1301, is additionally operable to receive described measurement configuration parameter, carries out according to described measurement configuration parameter Cell measurement, and generate measurement report.

Described UE1301, is additionally operable to send described measurement report to described source base station.

Described source base station 1302, is additionally operable to receive described measurement report, and cuts according to described measurement report Change decision-making.

Described source base station 1302, is additionally operable to send handover request message according to described handover decisions to target BS.

Described target BS 1303, is used for receiving described handover request message, and responds described handover request and disappear Breath obtains the Context of described UE at the Anchor1304 being connected with described target BS.

Described target BS 1303, is additionally operable to determining that the described UE of permission cuts according to the Context of described UE The instruction of RRC connection establishment is sent to described UE after changing.

Described UE1301, is additionally operable to respond the instruction of described RRC connection establishment, sets up with described target BS RRC connects.

In the embodiment of the present invention, source base station includes the RRC of DRX cycle to this UE clean culture being in connected state Signaling, this UE110 is maintained at connected state for a long time according to this DRX cycle；Source base station is hair under UE In the measurement configuration parameter of community switching, this UE carries out cell measurement according to this measurement configuration parameter and generates survey Amount report, and send this measurement report to this source base station, this source base station switches over certainly according to this measurement report Plan, sends handover request message to target BS during switching between standing, and this target BS responds this switching Request message obtains the Context of this UE at the Anchor connected, and at the Context according to this UE Setting up RRC with this UE after determining permission this UE switching to be connected, this target BS is not sent out by this source base station The signaling sent obtains the Context of this UE, but has acquisition at the Anchor of UE Context to be somebody's turn to do from storage The Context of UE, can reduce the signaling traffic load of network, and accelerate the switch speed of community.

Unit in all embodiments of the invention, can pass through universal integrated circuit, such as CPU (Central Processing Unit, central processing unit), or by ASIC (Application Specific Integrated Circuit, special IC) realize.

Step in embodiment of the present invention method can carry out order according to actual needs and adjust, merges and delete.

Unit in embodiment of the present invention terminal can merge according to actual needs, divides and delete.

One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, Can be by computer program and complete to instruct relevant hardware, described program can be stored in a calculating In machine read/write memory medium, this program is upon execution, it may include such as the flow process of the embodiment of above-mentioned each method. Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, Or random access memory (Random Access Memory, be called for short RAM) etc. ROM).

A kind of cell switching method, system and the relevant device that are thered is provided the embodiment of the present invention above are carried out Being discussed in detail, principle and the embodiment of the present invention are set forth by specific case used herein, with The explanation of upper embodiment is only intended to help to understand method and the core concept thereof of the present invention；Simultaneously for this The those skilled in the art in field, according to the thought of the present invention, the most all can Change part, and in sum, this specification content should not be construed as limitation of the present invention.

Claims

1. a cell switching method, it is characterised in that including:

Method the most according to claim 1, it is characterised in that described source base station is according to described switching certainly Plan sends handover request message to target BS, including:

Described source base station during switching, is cut to target BS transmission by X2 interface between described handover decisions is for station Change request message.

Method the most according to claim 1 and 2, it is characterised in that

Described Anchor is connected with described source base station and multiple base station to be selected, and described target BS is described many In individual base station to be selected one, described Anchor storage has described source base station and the service of the plurality of base station to be selected The Context of UE.

Method the most according to claim 1 and 2, it is characterised in that

Described target BS is in multiple base station to be selected, in described source base station and described base station to be selected Each base station is connected with an Anchor, and the Anchor storage that each base station described connects has described The Context of the UE of the adjacent base station service of each base station and each base station described.

5. according to the method according to any one of Claims 1 to 4, it is characterised in that described method also includes:

Described source base station receives described target BS at the Context obtaining described UE at described Anchor The acquisition request of the Context of the described UE sent during failure；

The response of described source base station is described obtains request, sends the Context of described UE to described target BS, The Context of described UE is for indicating described target BS determining permission according to the Context of described UE After described UE switching, set up RRC with described UE and be connected.

6. a cell switching method, it is characterised in that including:

Method the most according to claim 6, it is characterised in that

9. according to the method according to any one of claim 6～8, it is characterised in that described method also includes:

Described target BS at described Anchor obtain described UE Context failure time to described source Base station sends the acquisition request of the Context of described UE；

Described target BS receives the described described UE's obtaining request and send of described source base station response Context, and after determine permission described UE switching according to the Context of described UE, build with described UE Vertical RRC connects.

10. a cell switching method, it is characterised in that including:

11. methods according to claim 10, it is characterised in that described method also includes:

Described Anchor connects described source base station and multiple base station to be selected, and described target BS is the plurality of In base station to be selected one；

Described Anchor stores the Context of the UE of described source base station and the service of the plurality of base station to be selected.

12. methods according to claim 10, it is characterised in that described method also includes:

Described target BS is in multiple base station to be selected, in described source base station and described base station to be selected Each base station is connected with an Anchor, and the Anchor storage that each base station described connects is described often The Context of the UE of the adjacent base station service of one base station and each base station described.

13. methods according to claim 10, it is characterised in that described method also includes:

Described Anchor deletes when residual memory space is less than or equal to preset value does not has business transmission to be continued Duration reach the Context of UE of preset duration.

14. 1 kinds of cell switching methods, it is characterised in that including:

15. 1 kinds of base stations, it is characterised in that including:

Acquiring unit, for obtaining the measurement report that described UE sends；

Described transmitting element, is additionally operable to send handover request message according to described handover decisions to target BS, Described handover request message is for indicating described target BS to obtain at the Anchor being connected with described target BS Take the Context of described UE, and after determine permission described UE switching according to the Context of described UE, Set up RRC with described UE to be connected.

16. base stations according to claim 15, it is characterised in that described transmitting element according to described in cut Changing decision-making to the concrete mode of target BS transmission handover request message is:

17. 1 kinds of base stations, it is characterised in that including:

18. 1 kinds of Anchor, it is characterised in that including:

19. Anchor according to claim 18, it is characterised in that described Anchor also includes:

The Context updating block of UE, for deleting not when residual memory space is less than or equal to preset value Business is had to transmit the Context that lasting duration reaches the UE of preset duration.

20. 1 kinds of UE, it is characterised in that including:

21. 1 kinds of cell handover system, it is characterised in that include UE, source base station, target BS and Anchor, Wherein:

22. systems according to claim 21, it is characterised in that

23. systems according to claim 21, it is characterised in that