CN105228200B - A kind of the fast cell switching method and device of network assistance UE control - Google Patents
A kind of the fast cell switching method and device of network assistance UE control Download PDFInfo
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- CN105228200B CN105228200B CN201510642978.2A CN201510642978A CN105228200B CN 105228200 B CN105228200 B CN 105228200B CN 201510642978 A CN201510642978 A CN 201510642978A CN 105228200 B CN105228200 B CN 105228200B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
Abstract
The invention discloses the fast cell switching methods and device of a kind of control of network assistance user equipment (UE), for carrying out fast cell switching.The fast cell switching method includes: source base station according to the one or more candidate cells of the neighboring cell list of configuration acquisition；Source base station is interacted with base station belonging to candidate cell respectively prepares resource for UE switching；Source base station tissue network-assist information, then by radio resource control RRC connection reconfiguration message arrangement to UE；UE is measured according to the switching mode of configuration, when switch decision from the candidate cell of configuration preferably one be used as switching target small area, the Target cell of right backward selection synchronizes.The present invention controls switching mode by network assistance UE, optimize switching flow, reduce handover delay, reduce the risk of the UE call drop in cell switching, improve handover success rate, the continuity that ensure that business improves the experience of user, is particularly suitable for the high mobilities scene such as high-speed rail or course line covering.
Description
Technical field
The present invention relates to the present invention relates in long term evolution (LTE:Long-Term Evolution) communication system, cell
Fast cell switching problem under the high mobilities scene such as switching problem, especially high-speed railway.
Background technique
In order to be guaranteed at wireless heterogeneous networks (RRC, Radio Resource Connection) connected state RRC_
The business continuance of the user equipment (UE, User Equipment) of CONNECTED, LTE system are assisted using network-control UE
Mode switch over.Entire switching flow includes that switching prepares, switching executes and three phases are completed in switching.
Specific switching flow is as follows:
In handoff preparation phase, (note: base station refers to evolved node B (eNB, Evolved to source base station in LTE system
NodeB it)) receives after UE requires the measurement report that reports according to measuring configuration, based on the local area and neighbour carried in measurement report
The channel quality information in area, specially Reference Signal Received Power (RSRP, Reference Signal Received Power)
Or Reference Signal Received Quality (RSRQ, Reference Signal Received Quality) and wireless resource management are believed
Breath switches over decision, selects final handover candidate cells list, optimal switching mesh is selected from candidate list
Mark cell；Source base station sends switching request to target BS, and target BS carries out admission control, prepares switchable resource for UE, to
Source base station replys switching request response.
In handover execution stage, source base station sends the switching command that target BS generates to UE, indicates UE to Target cell
Switching；Source base station carries out uplink and downlink data inverse-transmitting to target BS.UE is successfully accessed to Target cell and establishes uplink synchronous, to
Target BS sends switching confirmation, switches over the completion stage.
In the switching completion stage, core network element completes the conversion of downlink path, and target BS is to forward pass and new connect
The data of receipts are sequentially sent, meanwhile, source base station discharges UE context.
In existing cell switching method, need that switching is undergone to prepare and switch to execute two ranks after UE reporting measurement reports
Section is just able to achieve eats dishes without rice or wine to connect with Target cell foundation, and handover delay is long, increases the risk of UE call drop, especially high-speed railway
Equal high mobilities scene.
Summary of the invention
In consideration of it, being allowed to gram the object of the present invention is to provide a kind of fast cell switching method of network assistance UE control
Take the above deficiency of the prior art.
The technical solution adopted by the present invention to solve the technical problems is as follows:
1. a kind of fast cell switching method of network assistance UE control, is applied in high mobility scene, which is characterized in that
It comprises the following steps that
Step 1: source base station obtains one or more candidate cells according to the neighboring cell list of configuration；
Step 2: source base station is interacted with base station belonging to candidate cell respectively prepares resource for UE switching, and obtain correspondence
Candidate cell be switching prepare the relevant information of wireless interface；
Step 3: source base station tissue network-assist information, including switching mode and switching judgment information, candidate cell mark
The relevant information of wireless interface of knowledge and candidate cell, then sets message arrangement to UE by RRC connection reconfiguration；
Step 4: UE is measured, UE measures corresponding parameter according to the switching mode of configuration, then switches over and sentences
Certainly, from the candidate cell of configuration preferably one be used as switching target small area, the Target cell of right backward selection synchronizes, and
Report switch indicating information；
Step 5: executing the switching completion stage, source base station prepares successful candidate cell to selected but switching respectively
Affiliated base station sends handover cancelling message, is released to the switchable resource and context of UE distribution.
When step 1 source base station obtains handover candidate cells, source base station obtains the composition of the adjacent area collection of configuration are as follows:
When the adjacent area quantity that adjacent area is concentrated is prescribed a time limit greater than preset gate, according to geography information or/and translational speed information or/and
Historical information concentrates preferred one or more adjacent areas as handover candidate cells from adjacent area；When the adjacent area quantity that adjacent area is concentrated is little
It prescribes a time limit in preset gate, adjacent area concentrates all adjacent areas as candidate cell.
Preparing switchable resource in the third step includes: that source base station requests to switch time respectively by sending switching request message
Selecting target BS is that UE prepares switchable resource；Candidate handover target base station carries out admission control and distributes switchable resource, then leads to
It crosses and replys response message for the relevant information band of the evolved wireless access bearer E-RAB and wireless interface of receiving back to source base
It stands.
Switching mode described in third step includes based on measurement and being based on geographical location information；If being configured to survey
Amount, then switching judgment information carries measurement configuration information；If being configured to geographical location information, switching judgment information is carried
The geographical location information (longitude and latitude) of handover candidate cells, covering radius and biasing.
The invention has the advantages that on the basis of existing technology, controlling switching mode, optimization by network assistance UE
Switching flow, reduces handover delay, reduces the risk of the UE call drop in cell switching, improves handover success rate, protects
The continuity for having demonstrate,proved business improves the experience of user, is particularly suitable for the high mobilities scene such as high-speed rail or course line covering.
Detailed description of the invention
Fig. 1 is overall process schematic diagram of the invention.
Fig. 2 is the network assistance UE control switching schematic diagram based on X2.
Fig. 3 is the network assistance UE control switching schematic diagram based on S1.
Fig. 4 is the process flow diagram that source base station obtains candidate cell.
Fig. 5 (a) is the process flow diagram of the switching preferred switching target small area UE based on measurement.
Fig. 5 (b) is the process flow diagram of the switching preferred switching target small area UE based on geographical location information.
Fig. 6 (a) is the process flow diagram for the data inverse-transmitting that source base station independently detects triggering.
Fig. 6 (b) is the process flow diagram of the data inverse-transmitting of UE notice source base station triggering.
Fig. 7 (a) is the process flow diagram that the switching based on X2 waits time-out.
Fig. 7 (b) is the process flow diagram that the switching based on S1 waits time-out.
Fig. 8 (a) is process flow diagram of the switching target small area based on X2 not in the candidate cell of configuration.
Fig. 8 (b) is process flow diagram of the switching target small area based on S1 not in the candidate cell of configuration.
Fig. 9 is the implementation block diagram of inventive network auxiliary information device.
Figure 10 is the implementation block diagram of switch processing device of the present invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Embodiment 1:
Overall process of the invention is as shown in Figure 1.
101st step: source base station obtains one or more candidate cells according to the neighboring cell list of configuration, jumps to the 102nd step；
102nd step: source base station is corresponding by the interaction acquisition of switching request process with base station belonging to candidate cell respectively
Candidate cell is the relevant information of wireless interface that UE switching prepares, and jumps to the 103rd step；
103rd step: source base station tissue network-assist information, including switching mode and switching judgment information, candidate cell mark
The relevant information of wireless interface of knowledge and candidate cell, then sets message arrangement to UE by RRC connection reconfiguration, jumps to
104th step；
104th step: UE is measured according to the switching mode of configuration, obtains measurement result；When switch decision, from configuration
Preferably one is used as switching target small area in candidate cell, and the Target cell of right backward selection synchronizes, and switching is reported to refer to
Show message, jumps to the 105th step；
105th step: the switching completion stage is executed.Then, source base station prepares successfully to wait to selected but switching respectively
It selects base station belonging to cell to send handover cancelling message, is released to switchable resource and context of UE distribution etc..
Embodiment 2:
Network assistance UE control switching based on X2 is as shown in Figure 2.In this embodiment, N number of selection candidate cell is shared,
And UE preferred candidate cell 1 is used as switching target small area.
201st step: source base station jumps to the 202nd step according to the preferably N number of candidate cell in adjacent area of configuration；
202nd step: source base station sends switching request message request to N to target BS 1 belonging to candidate cell respectively and is
UE switching distribution resource, jumps to the 203rd step；
203rd step: target BS 1 belonging to candidate cell to N successively carries out admission control, for UE switching distribution resource；
Target BS 1 belonging to candidate cell successively replys switching request response to source base station to N, carries the relevant information of wireless interface
And the evolved wireless access bearer E-RAB the being successfully established and E-RAB etc. for establishing failure, jump to the 204th step；
204th~205 step: network-assist information needed for the switching of source base station tissue, including switching mode and switch decision
The relevant information of wireless interface of information, candidate cell mark and candidate cell, wherein the switching mode includes being based on
Measure and be based on geographical location information.If being configured to measure, switching judgment information carries measurement configuration information；If configuration
For based on geographical location information, then switching judgment information carries the geographical location information (longitude and latitude) of handover candidate cells,
Covering radius and biasing etc..Then UE is sent to by RRC connection reconfiguration message；And receive the RRC replied after UE is handled successfully
Connection reconfiguration completes message, jumps to the 206th step；
206th step: UE measures corresponding parameter according to the switching mode of configuration, then switches over judgement, auxiliary from network
Preferably one is used as switching target small area in the candidate cell that supplementary information carries, and jumps to the 207th step；
207th step: downlink data anti-pass, comprising: source base station knows that UE starts to switch to Target cell, then respectively to time
Uplink and downlink packet data during selecting target BS 1 belonging to cell to transmit Sequence Number the migration switching of state Transfer Message to base station N
Convergence protocol PDCP sequence number and Hyper Frame Number HFN；And it is transmitted to time respectively by the downlink data from gateway S-GW is received
It selects target BS 1 belonging to cell to base station N, jumps to the 208th step；
208th step: UE sends switch indicating information to target BS 1.Here, UE is synchronized to choosing by random access procedure
The Target cell selected, sending switch indicating information instruction UE to target BS 1, successful switch jumps to the to Target cell
209 steps；
209th step: target BS 1 requests downlink general to mobility management entity MME transmitting path transition request message
Packet wireless service tunnel protocol GTP tunnel jumps to the 210th step to the conversion of a new GTP tunnel endpoint；
210th~211 step: MME sends modification bearing request message request modification carrying to S-GW, and receives S-GW reply
Modification bearing response message, jump to the 212nd step；
212nd step: MME sends one or more labels that terminate on old path immediately after transduction pathway and is grouped, and
It is transmitted to target BS 1 by source base station, is reordered with auxiliary mark base station 1, the 213rd step is jumped to；
213rd step: MME notifies target BS evolution packet core to 1 reverse-path convert requests response message of target BS
Success has been converted in the path of heart EPC, jumps to the 214th step；
214th step: target BS 1 sends customer equipment context release message, instruction source base station release money to source base station
Source jumps to the 215th step；
215th step: source base station successively to switching prepare successfully but target BS 2 belonging to not selected candidate cell to
N sends handover cancelling message, is released to switchable resource and context of UE distribution etc..
Embodiment 3:
Network assistance UE control switching based on S1 is as shown in Figure 3.In this embodiment, N number of selection candidate cell is shared,
And UE preferred candidate cell 1 is used as switching target small area.
301st step: source base station jumps to the 302nd step according to the preferably N number of candidate cell in adjacent area of configuration；
302nd step: source base station sends switching request message to MME respectively, and the resource of request target side prepares, and jumps to the
303 steps；
303rd step: MME sends switching request message to target BS 1 belonging to candidate cell to N respectively, requests resource
Prepare, jumps to the 304th step；
304th step: target BS 1 belonging to candidate cell to N successively carries out admission control, for UE switching distribution resource；
Target BS 1 belonging to candidate cell successively replys switching request response to MME to N, carry the relevant information of wireless interface with
And the evolved wireless access bearer E-RAB the being successfully established and E-RAB etc. for establishing failure, jump to the 305th step；
305th step: MME successively sends switching command message to source base station, carries the relevant information of wireless interface and builds
It founds successful evolved wireless access bearer E-RAB and establishes the E-RAB etc. of failure, jump to the 306th step；
306th~307 step: network-assist information needed for the switching of source base station tissue, including switching mode and switch decision
The relevant information of wireless interface of information, candidate cell mark and candidate cell, and sent by RRC connection reconfiguration message
To UE；And receive the RRC connection reconfiguration replied after UE is handled successfully and complete message, jump to the 308th step；
308th step: UE measures corresponding parameter according to the switching mode of configuration, then switches over judgement, auxiliary from network
Preferably one is used as switching target small area in the candidate cell that supplementary information carries, and jumps to the 309th step；
309th step: data inverse-transmitting, specifically: source base station successively sends base station state Transfer Message to MME and shifts PDCP sequence
Row number sends and receivees state；MME sends mobile management entity state to N to target BS 1 belonging to candidate cell respectively and turns
It moves message transfers PDCP sequence number and sends and receivees state；Source base station gives the downlink data anti-pass from S-GW to candidate cell institute
The target BS 1 of category jumps to the 310th step to N；
310th step: UE sends switch indicating information to target BS 1.Here, UE is synchronized to choosing by random access procedure
The Target cell selected, sending switch indicating information instruction UE to target BS, successful switch jumps to the to Target cell
311 steps；
311st step: target BS 1 sends handoff notification message to MME, and notice MME UE is known in Target cell
Not, and S1 switching has been completed, and jumps to 312 steps；
312nd~313 step: MME sends customer equipment context release command to source base station and disappears after relevant treatment
Breath, the request release associated S1 logical connection of UE；And receive the customer equipment context release replied after source base station is handled successfully
Message is completed, the 314th step is jumped to；
314th step: source base station sends handover cancelling message to MME respectively, and request switching prepares successfully but not selected
Target BS belonging to candidate cell cancels switching, jumps to the 315th step；
315th~316 step: MME successively prepares successfully but target BS 2 belonging to not selected candidate cell to switching
Customer equipment context release command message, the request release associated S1 logical connection of UE are sent to N；And receive target BS 2
The customer equipment context Release complete successively replied after handling successfully to N, jumps to the 317th step；
317th step: MME successively replys handover cancelling response message to source base station, confirms not selected candidate cell institute
The target BS 2 of category is to N handover cancelling.
Embodiment 4:
The processing that source base station obtains candidate cell is as shown in Figure 4.
401st step: source base station obtains the adjacent area of this cell configuration, is denoted as adjacent area collection, jumps to the 402nd step；
402nd step: judge that adjacent area concentrates whether the quantity of adjacent area is greater than preset thresholding, if it is greater than preset thresholding, jumps
Otherwise the 404th step is jumped to the 403rd step；
403rd step: preferably one is concentrated from adjacent area according to geographical location information, translational speed information or/and historical information
Or multiple candidate cells.
404th step: concentrate all adjacent areas as candidate cell in adjacent area.
Embodiment 5:
When switching mode is based on measurement, shown in processing such as Fig. 5 (a) of the preferred switching target small area UE.
501st step: UE measures the channel quality of adjacent cell, measurement result is exported when meeting condition, including adjacent cell
RSRP or/and RSRQ jumps to the 502nd step；
502nd step: being filtered measurement result, and the measurement result of the candidate cell configured jumps to the 503rd
Step；
503rd step: the measurement result of the candidate cell obtained after filtering is ranked up according to RSRP or RSRQ, is jumped to
504th step；
504th step: the candidate cell for selecting RSRP or RSRQ best is as switching target small area.
When switching mode is based on geographical location information, shown in processing such as Fig. 5 (b) of the preferred switching target small area UE.
501st step: UE exports the geographical location letter being currently located according to certain period measurement geographical location information
Breath.Wherein, UE, which configures the modules such as global position system GPS or Beidou, may be implemented geography information measurement.Jump to the 502nd
Step；
502nd step: the ground for the handover candidate cells that UE is carried according to current geographical location information and network-assist information
Positional information calculation UE is managed to the distance d of handover candidate cells, jumps to the 503rd step；
503rd step: calculating coverage radius of cell r and distance d and biases the difference of offset, calculation formula are as follows: and difference=
Coverage radius of cell r- (distance d+ biases offset).Jump to the 504th step；
504th step: filtering out handover candidate cells of the difference less than 0, then small to handoff candidate from big to small according to difference
Area is ranked up, and selects the maximum handover candidate cells of difference as switching target small area.
Embodiment 6:
Shown in processing such as Fig. 6 (a) of source base station trigger data anti-pass.
601st step: source base station detection data transmits situation, jumps to the 602nd step；
602nd step: source base station judges whether data can not reach UE.If data can not reach UE, the 603rd is jumped to
Step；Otherwise, the 604th step is jumped to；
603rd step: source base station thinks that UE switches to Target cell, log-on data anti-pass.
604th step: source base station thinks UE still in source cell, not log-on data anti-pass.
Optionally, source base station can also carry out data inverse-transmitting by following processing, as shown in Fig. 6 (b).
601st step: it when UE prepares to switch to Target cell, notifies source base station, jumps to the 602nd step；
602nd step: source base station log-on data anti-pass.
Embodiment 7:
Switching based on X2 waits shown in processing such as Fig. 7 (a) of time-out.
701st step: switching waiting timer time-out jumps to the 702nd step；
702nd step: source base station sends handover cancelling message to target BS 1 belonging to candidate cell to N respectively, is released to
Switchable resource and context of UE distribution etc., jump to the 703rd step；
703rd~704 step: source base station sends wireless heterogeneous networks connection reconfiguration message to UE, and the candidate for deleting configuration is small
Area and the relevant information of corresponding wireless interface；The wireless heterogeneous networks connection reconfiguration replied after UE is handled successfully is received to complete
Message.
Switching based on S1 waits shown in processing such as Fig. 7 (b) of time-out.
701st step: switching waiting timer time-out jumps to the 702nd step；
702nd step: source base station sends handover cancelling message to MME respectively, and the switching for cancelling target prepares, and jumps to the
703 steps；
703rd~704 step: MME sends customer equipment context to N to target BS 1 belonging to candidate cell respectively and releases
Put command messages, the S1 logical connection of release UE management；And receive the user equipment replied after target base station processes success or more
Literary Release complete jumps to the 705th step；
705th step: MME replys handover cancelling response message to source base station, and confirmation target handover cancelling is completed, and jumps to the
706 steps；
706th~707 step: source base station sends wireless heterogeneous networks connection reconfiguration message to UE, and the candidate for deleting configuration is small
Area and the relevant information of corresponding wireless interface；The wireless heterogeneous networks connection reconfiguration replied after UE is handled successfully is received to complete
Message.
Embodiment 8:
It is based on measurement for switching mode, switching target small area is not in the candidate list of configuration when X2 switches
Processing is as shown in Fig. 8 (a).
801st step: UE is measured, and discovery switching target small area is not arranged in the candidate cell of configuration when executing switch decision
In table, to source base station reporting measurement reports, the 802nd step is jumped to；
802nd step: source base station sends handover cancelling message to target BS 1 belonging to candidate cell to N respectively, and cancellation is cut
It changes, jumps to the 803rd step；
803rd~804 step: source base station switches over judgement, selects new handover-target base station, and to new handover-target base station
Switching request message is sent, requests to prepare resource for switching；And receive the switching replied after new switching target base station processes success
Request-reply message jumps to the 805th step；
805th step: source base station sends radio resource connection control reallocation message to UE, carries switching command and deletes and waits
The network-assist informations such as cell are selected, 806 steps are jumped to；
806th step: data inverse-transmitting.Source base station transmits Sequence Number state Transfer Message to fresh target base station, and will receive
It is transmitted to fresh target base station from the downlink data of S-GW, jumps to the 807th step；
807th step: UE is synchronized to Target cell by random access, and completes message by radio resource connection reconfiguration and take
Band switch acknowledgment message, jumps to the 808th step；
808th step: the switching completion stage is executed, including carries out path integration, source of release base station user context etc..
In addition, being based on measurement for switching mode, switching target small area is not arranged in the candidate cell of configuration when S1 switches
Shown in processing such as Fig. 8 (b) in table.
801st step: UE is measured, and discovery switching target small area is not arranged in the candidate cell of configuration when executing switch decision
In table, to source base station reporting measurement reports, the 802nd step is jumped to；
802nd~805 step: cancelling original switching and prepare, specifically: source base station sends handover cancelling message to MME；So
Afterwards MME respectively to target BS 1 belonging to candidate cell to N send customer equipment context release command message；Target BS 1
UE context is discharged to N and replys customer equipment context Release complete to MME；MME replys handover cancelling to source base station
Response message confirms handover cancelling, jumps to the 806th step；
806th~809 step: switching prepares, specifically: source base station switches over judgement, selects new handover-target base station, and
Switching request message is sent to MME, request target resource prepares；MME sends switching request message request money to fresh target base station
Source preparation；Fresh target base station carries out admission control, prepares switchable resource, replys handoff request acknowledgment message to MME after success and leads to
Know the ready resource of MME target；It has been that switching is quasi- that MME, which sends switching command message notice source base station target side to source base station,
It gets resource ready, jumps to the 810th step；
810th step: source base station sends radio resource connection control reallocation message to UE, carries switching command and deletes packet
The network-assist informations such as candidate cell mark are included, 811 steps are jumped to；
811st step: data inverse-transmitting, specifically: source base station sends base station state migration message to MME and migrates PDCP sequence number
Send and receive state；MME sends mobility management entity state Transfer Message migration PDCP sequence number to fresh target base station and connects
State is received and sent, and is transmitted to fresh target base station for the downlink data from S-GW is received, jumps to the 812nd step；
812nd step: UE is synchronized to Target cell by random access, and completes message by radio resource connection reconfiguration and take
Band switch acknowledgment message, jumps to the 813rd step；
808th step: the switching completion stage is executed, including sends handoff notification message, MME release command source base station to MME
Discharge user's context etc..
Shown in Figure 9, network-assist information device includes:
Network-assist information device includes receiving module 910, is received belonging to the candidate cell for the source base station
Target BS is the switchable resource information that the UE prepares；Module 920 is assembled, is that the UE organizes network for the source base station
Auxiliary information；And sending module 930, configuration message is sent to the UE for the source base station, the configuration message includes
Network-assist information.
Shown in Figure 10, switch processing device includes:
Switch processing device includes receiving module 1010, receives for the UE and disappears from the configuration that the source base station issues
Breath, the configuration message includes network-assist information；Measurement module 1020 is carried for the UE according to network-assist information
Switching mode executes measurement；Judging module 1030 switches over judgement according to measurement result for the UE, believes from network assistance
Cease preferred switching target small area in the candidate cell carried；And synchronization module 1040, switch mesh to preferred for the UE
Mark cell or the Target cell of source base station instruction switching synchronize.
Finally, it is stated that although method is not limited only to this, as long as relating to by taking LTE communication system as an example in the present invention
And to the cell switching method and device in protection scope of the present invention.Although being carried out referring to preferred embodiment to the present invention
It is described in detail, those skilled in the art should understand that, it can modify to technical solution of the present invention or equivalent
Replacement, without departing from the objective and range of technical solution of the present invention, is intended to be within the scope of the claims of the invention.
Claims (1)
1. a kind of fast cell switching method of network assistance UE control, which is characterized in that comprise the following steps that
101st step: source base station obtains one or more candidate cells according to the neighboring cell list of configuration, jumps to the 102nd step；
102nd step: source base station passes through the corresponding candidate of switching request process interaction acquisition with base station belonging to candidate cell respectively
Cell is the relevant information of wireless interface that UE switching prepares, and jumps to the 103rd step；
103rd step: source base station tissue network-assist information, including switching mode and switching judgment information, candidate cell mark, with
And the relevant information of wireless interface of candidate cell, message arrangement is then set to UE by RRC connection reconfiguration, jumps to the 104th
Step；
104th step: UE is measured according to the switching mode of configuration, obtains measurement result；When switch decision, from the candidate of configuration
Preferably one is used as switching target small area in cell, and the Target cell of right backward selection synchronizes, and switching instruction is reported to disappear
Breath, jumps to the 105th step；
105th step: the switching completion stage is executed；Then, source base station prepares to selected but switching successfully candidate small respectively
Base station belonging to area sends handover cancelling message, is released to the switchable resource and context of UE distribution；
Network assistance UE control switching based on X2 is as follows: sharing N number of selection candidate cell, and 1 conduct of UE preferred candidate cell
Switching target small area；
201st step: source base station jumps to the 202nd step according to the preferably N number of candidate cell in adjacent area of configuration；
202nd step: source base station sends switching request message request to N to target BS 1 belonging to candidate cell respectively and cuts for UE
Distribution resource is changed, the 203rd step is jumped to；
203rd step: target BS 1 belonging to candidate cell to N successively carries out admission control, for UE switching distribution resource；It is candidate
Target BS 1 belonging to cell successively replys switching request response to source base station to N, carry the relevant information of wireless interface and
The E-RAB of the evolved wireless access bearer E-RAB and foundation failure that are successfully established, jump to the 204th step；
204th~205 step: network-assist information needed for the switching of source base station tissue, including switching mode and switching judgment information,
Candidate cell mark and candidate cell the relevant information of wireless interface, wherein the switching mode include based on measurement and
Based on geographical location information；If being configured to measure, switching judgment information carries measurement configuration information；If being configured to
Geographical location information, then switching judgment information carries the longitude and latitude geographical location information of handover candidate cells, covering radius
And biasing；Then UE is sent to by RRC connection reconfiguration message；And it is complete to receive the RRC connection reconfiguration replied after UE is handled successfully
At message, the 206th step is jumped to；
206th step: UE measures corresponding parameter according to the switching mode of configuration, then switches over judgement, believes from network assistance
Preferably one is used as switching target small area in the candidate cell that breath carries, and jumps to the 207th step；
207th step: downlink data anti-pass, comprising: source base station knows that UE starts to switch to Target cell, then respectively to candidate small
Uplink and downlink packet data convergence during target BS 1 belonging to area transmits Sequence Number the migration switching of state Transfer Message to base station N
Agreement PDCP sequence number and Hyper Frame Number HFN；And will receive the downlink data from gateway S-GW be transmitted to respectively it is candidate small
Target BS 1 belonging to area jumps to the 208th step to base station N；
208th step: UE sends switch indicating information to target BS 1；Here, UE is synchronized to selection by random access procedure
Target cell, sending switch indicating information instruction UE to target BS 1, successful switch jumps to the 209th to Target cell
Step；
209th step: target BS 1 requests downlink general packet to mobility management entity MME transmitting path transition request message
Radio Service Tunneling Protocol GTP tunnel jumps to the 210th step to the conversion of a new GTP tunnel endpoint；
210th~211 step: MME sends modification bearing request message request modification carrying to S-GW, and receives repairing for S-GW reply
Change bearing response message, jumps to the 212nd step；
212nd step: MME sends one or more labels that terminate on old path immediately after transduction pathway and is grouped, and passes through
Source base station is transmitted to target BS 1, is reordered with auxiliary mark base station 1, jumps to the 213rd step；
213rd step: MME notifies target BS evolution block core to 1 reverse-path convert requests response message of target BS
Success has been converted in the path of EPC, jumps to the 214th step；
214th step: target BS 1 sends customer equipment context release message to source base station, and instruction source base station discharges resource, jumps
Go to the 215th step；
215th step: source base station successively to switching prepares successfully but target BS 2 belonging to not selected candidate cell to N hair
Handover cancelling message is sent, the switchable resource and context of UE distribution are released to；
Network assistance UE control switching based on S1 is as follows: sharing N number of selection candidate cell, and 1 conduct of UE preferred candidate cell
Switching target small area；
301st step: source base station jumps to the 302nd step according to the preferably N number of candidate cell in adjacent area of configuration；
302nd step: source base station sends switching request message to MME respectively, and the resource of request target side prepares, and jumps to the 303rd
Step；
303rd step: MME sends switching request message to target BS 1 belonging to candidate cell to N respectively, and request resource prepares,
Jump to the 304th step；
304th step: target BS 1 belonging to candidate cell to N successively carries out admission control, for UE switching distribution resource；It is candidate
Target BS 1 belonging to cell successively replys switching request response to MME to N, carries the relevant information of wireless interface and builds
It founds successful evolved wireless access bearer E-RAB and establishes the E-RAB of failure, jump to the 305th step；
305th step: MME successively sends switching command message to source base station, carries the relevant information of wireless interface and is created as
The evolved wireless access bearer E-RAB of the function and E-RAB for establishing failure, jumps to the 306th step；
306th~307 step: network-assist information needed for the switching of source base station tissue, including switching mode and switching judgment information,
The relevant information of wireless interface of candidate cell mark and candidate cell, and UE is sent to by RRC connection reconfiguration message；
And receive the RRC connection reconfiguration replied after UE is handled successfully and complete message, jump to the 308th step；
308th step: UE measures corresponding parameter according to the switching mode of configuration, then switches over judgement, believes from network assistance
Preferably one is used as switching target small area in the candidate cell that breath carries, and jumps to the 309th step；
309th step: data inverse-transmitting, specifically: source base station successively sends base station state Transfer Message to MME and shifts PDCP sequence number
Send and receive state；MME sends the transfer of mobile management entity state to N to target BS 1 belonging to candidate cell respectively and disappears
Breath transfer PDCP sequence number sends and receivees state；Source base station is by the downlink data anti-pass from S-GW to belonging to candidate cell
Target BS 1 jumps to the 310th step to N；
310th step: UE sends switch indicating information to target BS 1；Here, UE is synchronized to selection by random access procedure
Target cell, sending switch indicating information instruction UE to target BS, successful switch jumps to the 311st to Target cell
Step；
311st step: target BS 1 sends handoff notification message to MME, and notice MME UE is identified in Target cell, and
S1 switching has been completed, and 312 steps are jumped to；
312nd~313 step: MME sends customer equipment context release command message after relevant treatment, to source base station, asks
Seek the release associated S1 logical connection of UE；And it receives the customer equipment context release replied after source base station is handled successfully and completes to disappear
Breath, jumps to the 314th step；
314th step: source base station sends handover cancelling message to MME respectively, and request switching prepares successfully but not selected candidate
Target BS belonging to cell cancels switching, jumps to the 315th step；
315th~316 step: MME successively prepares successfully to switching but target BS 2 belonging to not selected candidate cell is to N
Send customer equipment context release command message, the request release associated S1 logical connection of UE；And target BS 2 is received to N
The customer equipment context Release complete successively replied after handling successfully, jumps to the 317th step；
317th step: MME successively replys handover cancelling response message to source base station, confirms belonging to not selected candidate cell
Target BS 2 is to N handover cancelling；
The processing that source base station obtains candidate cell is as follows:
401st step: source base station obtains the adjacent area of this cell configuration, is denoted as adjacent area collection, jumps to the 402nd step；
402nd step: judging that adjacent area concentrates whether the quantity of adjacent area is greater than preset thresholding, if it is greater than preset thresholding, jumps to the
Otherwise 403 steps jump to the 404th step；
403rd step: preferably one or more is concentrated from adjacent area according to geographical location information, translational speed information or/and historical information
A candidate cell；
404th step: concentrate all adjacent areas as candidate cell in adjacent area；
When switching mode is based on measurement, the processing of the preferred switching target small area UE is as follows:
501st step: UE measures the channel quality of adjacent cell, measurement result is exported when meeting condition, the RSRP including adjacent cell
Or/and RSRQ, jump to the 502nd step；
502nd step: being filtered measurement result, and the measurement result of the candidate cell configured jumps to the 503rd step；
503rd step: being ranked up the measurement result of the candidate cell obtained after filtering according to RSRP or RSRQ, jumps to
504 steps；
504th step: the candidate cell for selecting RSRP or RSRQ best is as switching target small area；
When switching mode is based on geographical location information, the processing of the preferred switching target small area UE is as follows:
501st step: UE exports the geographical location information being currently located according to certain period measurement geographical location information；Its
In, geography information measurement may be implemented in UE configuration such as global position system GPS or Beidou module；Jump to the 502nd step；
502nd step: the geographical position for the handover candidate cells that UE is carried according to current geographical location information and network-assist information
Confidence breath calculates UE to the distance d of handover candidate cells, jumps to the 503rd step；
503rd step: calculating coverage radius of cell r and distance d and biases the difference of offset, calculation formula are as follows: difference=cell
Covering radius r- (distance d+ biases offset)；Jump to the 504th step；
504th step: filtering out handover candidate cells of the difference less than 0, then according to difference from big to small to handover candidate cells into
Row sequence, selects the maximum handover candidate cells of difference as switching target small area；
The processing of source base station trigger data anti-pass is as follows:
601st step: source base station detection data transmits situation, jumps to the 602nd step；
602nd step: source base station judges whether data can not reach UE；If data can not reach UE, the 603rd step is jumped to；It is no
Then, the 604th step is jumped to；
603rd step: source base station thinks that UE switches to Target cell, log-on data anti-pass；
604th step: source base station thinks UE still in source cell, not log-on data anti-pass；
Optionally, source base station can also carry out data inverse-transmitting by following processing,
601st step: it when UE prepares to switch to Target cell, notifies source base station, jumps to the 602nd step；
602nd step: source base station log-on data anti-pass；
It is the switching target small area not processing in the candidate list of configuration when X2 switches based on measurement for switching mode
It is as follows:
801st step: UE is measured, and finds switching target small area not in the candidate list of configuration when executing switch decision
In, to source base station reporting measurement reports, jump to the 802nd step；
802nd step: source base station sends handover cancelling message to target BS 1 belonging to candidate cell to N respectively, cancels switching,
Jump to the 803rd step；
803rd~804 step: source base station switches over judgement, selects new handover-target base station, and send to new handover-target base station
Switching request message requests to prepare resource for switching；And receive the switching request replied after new switching target base station processes success
Response message jumps to the 805th step；
805th step: source base station sends radio resource connection control reallocation message to UE, carries switching command and deletes candidate small
Area's network-assist information jumps to 806 steps；
806th step: data inverse-transmitting；Source base station transmits Sequence Number state Transfer Message to fresh target base station, and comes from S- for receiving
The downlink data of GW is transmitted to fresh target base station, jumps to the 807th step；
807th step: UE is synchronized to Target cell by random access, and completes message carrying by radio resource connection reconfiguration and cut
Confirmation message is changed, the 808th step is jumped to；
808th step: the switching completion stage is executed, including carries out path integration, source of release base station user context；
In addition, being based on measurement for switching mode, switching target small area is not in the candidate list of configuration when S1 switches
Processing it is as follows:
801st step: UE is measured, and finds switching target small area not in the candidate list of configuration when executing switch decision
In, to source base station reporting measurement reports, jump to the 802nd step；
802nd~805 step: cancelling original switching and prepare, specifically: source base station sends handover cancelling message to MME；Then
MME respectively to target BS 1 belonging to candidate cell to N send customer equipment context release command message；Target BS 1 to
N discharges UE context and replys customer equipment context Release complete to MME；MME replys handover cancelling to source base station and answers
Message authentication handover cancelling is answered, the 806th step is jumped to；
806th~809 step: switching prepares, specifically: source base station switches over judgement, selects new handover-target base station, and to
MME sends switching request message, and request target resource prepares；MME sends switching request message request resource to fresh target base station
Prepare；Fresh target base station carries out admission control, prepares switchable resource, replys handoff request acknowledgment message notice to MME after success
The ready resource of MME target；It has been that switching prepares that MME, which sends switching command message notice source base station target side to source base station,
Resource has been got well, the 810th step is jumped to；
810th step: source base station sends radio resource connection control reallocation message to UE, and carrying switching command and deleting includes waiting
Cell ID network-assist information is selected, 811 steps are jumped to；
811st step: data inverse-transmitting, specifically: source base station sends base station state migration message migration PDCP sequence number to MME and receives
With the state of transmission；MME to fresh target base station send mobility management entity state Transfer Message migration PDCP sequence number receive and
Transmission state, and it is transmitted to fresh target base station by the downlink data from S-GW is received, jump to the 812nd step；
812nd step: UE is synchronized to Target cell by random access, and completes message carrying by radio resource connection reconfiguration and cut
Confirmation message is changed, the 813rd step is jumped to；
813rd step: the switching completion stage is executed, including sends handoff notification message, the release of MME release command source base station to MME
User's context.
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Families Citing this family (44)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3198940B1 (en) * | 2016-04-01 | 2020-06-03 | Telefonaktiebolaget LM Ericsson (publ) | Network device, terminal device and methods for facilitating handover of terminal device |
| WO2018058515A1 (en) | 2016-09-30 | 2018-04-05 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and arrangements for measurement based mobility |
| CN109792305B (en) | 2016-09-30 | 2020-12-11 | 瑞典爱立信有限公司 | Method and apparatus for radio link measurement configuration |
| EP3520473B1 (en) * | 2016-09-30 | 2022-09-28 | Telefonaktiebolaget LM Ericsson (publ) | Methods and arrangements for measurement based mobility |
| EP3520483B1 (en) | 2016-09-30 | 2022-05-04 | Telefonaktiebolaget LM Ericsson (publ) | Methods and arrangements for measurement based mobility |
| CN106604335B (en) * | 2016-12-21 | 2020-02-04 | 西南交通大学 | Cell switching method |
| CN108337708B (en) * | 2017-01-19 | 2021-07-27 | 北京小米移动软件有限公司 | Mobility management method and device |
| CN108337700B (en) * | 2017-01-20 | 2020-11-17 | 北京佰才邦技术有限公司 | Method for automatically switching terminal, base station and terminal |
| CN108471631B (en) * | 2017-02-23 | 2020-05-12 | 北京佰才邦技术有限公司 | Switching preparation method, related base station and UE |
| EP3589020A4 (en) * | 2017-03-07 | 2020-01-08 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Resource processing method, network-side device, terminal, and system |
| WO2018170777A1 (en) * | 2017-03-22 | 2018-09-27 | Motorola Mobility Llc | A condition for handover |
| CN113301618B (en) | 2017-03-24 | 2022-10-04 | 华为技术有限公司 | Communication method, network equipment and terminal |
| CN106941701B (en) * | 2017-04-18 | 2020-11-10 | 宇龙计算机通信科技(深圳)有限公司 | Cell switching method of terminal cell and related device |
| CN108738081B (en) * | 2017-04-21 | 2020-12-22 | 北京佰才邦技术有限公司 | Configuration method and device for cell switching and base station |
| CN113825190A (en) * | 2017-05-26 | 2021-12-21 | 捷开通讯(深圳)有限公司 | Communication switching method and device |
| EP3639560A4 (en) * | 2017-06-15 | 2021-02-24 | LG Electronics Inc. | Method for performing a handover procedure in a wireless communication system and a device therefor |
| CN109104747A (en) * | 2017-06-21 | 2018-12-28 | 索尼公司 | Electronic equipment and method for wireless communication |
| CN107567046B (en) * | 2017-08-25 | 2021-03-12 | 维沃移动通信有限公司 | Cell access method and mobile terminal |
| WO2019090724A1 (en) | 2017-11-10 | 2019-05-16 | 北京小米移动软件有限公司 | Method and device for unmanned aerial vehicle handover and base station |
| EP3706469B1 (en) * | 2017-11-29 | 2023-01-04 | Beijing Xiaomi Mobile Software Co., Ltd. | Network configuration method and apparatus, and network measurement method and apparatus |
| US11490304B2 (en) * | 2018-01-08 | 2022-11-01 | Lenovo (Beijing) Limited | Method and apparatus for UE handover |
| CN110149663A (en) | 2018-02-13 | 2019-08-20 | 维沃移动通信有限公司 | Condition handover cancelling method and communication equipment |
| WO2019192000A1 (en) * | 2018-04-04 | 2019-10-10 | 华为技术有限公司 | Communication method and apparatus |
| JP2021106301A (en) * | 2018-04-04 | 2021-07-26 | ソニーグループ株式会社 | Communication device, base station device, communication method, communication program, and communication system |
| CN109104749B (en) * | 2018-08-27 | 2022-06-07 | 创新维度科技（北京）有限公司 | Mobility switching control method, device and storage medium |
| CN112470518A (en) * | 2018-09-27 | 2021-03-09 | Oppo广东移动通信有限公司 | Data transmission method, terminal equipment and network equipment |
| CN112514450B (en) * | 2018-11-29 | 2024-01-05 | Oppo广东移动通信有限公司 | Data processing method, device and storage medium |
| CN111372292B (en) * | 2018-12-26 | 2022-01-14 | 华为技术有限公司 | Communication method and communication device |
| CN111372293B (en) * | 2018-12-26 | 2021-12-21 | 华为技术有限公司 | Communication method and communication device |
| CN111385811B (en) * | 2018-12-27 | 2023-04-07 | 华为技术有限公司 | Unmanned aerial vehicle communication method, device and system |
| WO2020164073A1 (en) * | 2019-02-14 | 2020-08-20 | Oppo广东移动通信有限公司 | Condition-triggered configuration method and related product |
| CN111586773A (en) * | 2019-02-19 | 2020-08-25 | ***通信有限公司研究院 | Switching method, device and communication equipment |
| CN112020110B (en) * | 2019-05-31 | 2022-10-04 | 华为技术有限公司 | Network access method and device of terminal equipment |
| WO2020263028A1 (en) * | 2019-06-28 | 2020-12-30 | Samsung Electronics Co., Ltd. | Device and method for performing handover in wireless communication system |
| CN111294766B (en) * | 2019-07-22 | 2022-09-16 | 展讯通信（上海）有限公司 | Condition switching method and device, storage medium and terminal |
| WO2021035533A1 (en) * | 2019-08-27 | 2021-03-04 | Lenovo (Beijing) Limited | Method and apparatus for controlling a cell selection procedure and a handover procedure |
| KR20220049039A (en) * | 2019-09-29 | 2022-04-20 | 애플 인크. | Pre-forwarding of data packets for conditional handover |
| BR112022024220A2 (en) * | 2020-05-29 | 2022-12-20 | Beijing Xiaomi Mobile Software Co Ltd | METHOD, APPARATUS AND DEVICE FOR RESELECTION OF CELLS, AND, NON-TRAINER COMPUTER READABLE STORAGE MEDIA |
| CN113747519A (en) * | 2020-05-29 | 2021-12-03 | 大唐移动通信设备有限公司 | Switching, switching processing, switching data analysis method, switching data analysis device, and medium |
| CN112040521A (en) * | 2020-09-03 | 2020-12-04 | 维沃移动通信有限公司 | Cell switching method and device |
| CN114466416B (en) * | 2020-11-10 | 2023-12-01 | 大唐移动通信设备有限公司 | Cell switching method and device |
| CN113453298B (en) * | 2021-06-01 | 2023-03-31 | 中国联合网络通信集团有限公司 | Condition switching method and condition switching device |
| CN116419356A (en) * | 2021-12-31 | 2023-07-11 | 华为技术有限公司 | Conditional switching method, device and system |
| CN117295083A (en) * | 2022-06-17 | 2023-12-26 | ***通信有限公司研究院 | Cell activation method, communication method, device, related equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244907A (en) * | 2010-05-14 | 2011-11-16 | 北京信威通信技术股份有限公司 | Quick switching method and device for radio communication |
| CN103237324A (en) * | 2013-04-19 | 2013-08-07 | 西南交通大学 | Quick switch decision method for geographical location information auxiliary LTE (long term evolution) system |
| CN104349409A (en) * | 2013-07-30 | 2015-02-11 | 中兴通讯股份有限公司 | Cell switching method and base station |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101668320B (en) * | 2008-09-01 | 2012-01-18 | 普天信息技术研究院有限公司 | Method for reducing handover delay in long term evolution systems |
| CN102065495A (en) * | 2009-11-13 | 2011-05-18 | 大唐移动通信设备有限公司 | Method, system and base station for selecting target cell |
| KR102362590B1 (en) * | 2011-07-12 | 2022-02-15 | 인터디지탈 패튼 홀딩스, 인크 | Method and apparatus for multi-rat access mode operation |
-
2015
- 2015-10-08 CN CN201510642978.2A patent/CN105228200B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244907A (en) * | 2010-05-14 | 2011-11-16 | 北京信威通信技术股份有限公司 | Quick switching method and device for radio communication |
| CN103237324A (en) * | 2013-04-19 | 2013-08-07 | 西南交通大学 | Quick switch decision method for geographical location information auxiliary LTE (long term evolution) system |
| CN104349409A (en) * | 2013-07-30 | 2015-02-11 | 中兴通讯股份有限公司 | Cell switching method and base station |
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