CN107734480A - A kind of switching method and system - Google Patents
A kind of switching method and system Download PDFInfo
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- CN107734480A CN107734480A CN201610664209.7A CN201610664209A CN107734480A CN 107734480 A CN107734480 A CN 107734480A CN 201610664209 A CN201610664209 A CN 201610664209A CN 107734480 A CN107734480 A CN 107734480A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
Abstract
This application discloses a kind of switching method and system, wherein, method includes：When base station, eNdeB judges that the user equipment (UE) of this cell function of authorised vehicles short-range communication needs to switch over, trigger the UE and be switched to purpose cell, and workable V2V sends resource and workable V2V transmissions resource notification after handover success to the UE in handoff procedure by the UE；In the implementation procedure of the switching, the UE utilizes the V2V workable in handoff procedure to send resource transmission V2V message；After the handover success, workable V2V sends resource transmission V2V message after the UE utilizes the handover success.Using the present invention, the UE of the function of authorised vehicles short-range communication handover success rate can be improved, reduces handover delay.
Description
Technical field
The present invention relates to mobile communication technology, more particularly to a kind of switching method and system.
Background technology
Car exchanges the key technology that (Vehicle to X, V2X) is following intelligent transport system with the information in the external world.
V2X goes through to set up the project in 3GPP RAN#68 meetings, main to study the vehicle data transmission scheme based on 3GPP communication protocols.
At present in existing report V2X using including car and car (Vehicle-to-Vehicle, V2V), car and trackside infrastructure
(Vehicle-to-Infrastructure, V2I), car and pedestrian (Vehicle-to-Pedestrian, V2P) and car and application
Server (Vehicle-to-Network, V2N), as shown in Figure 1.V2X applications will improve drive safety, reduce congestion and car
Energy consumption, improve traffic efficiency and car entertainment information etc..
At present, generally use DSRC technology (Dedicated Short Range Communications,
DSRC) V2X business is transmitted, but its transmission objective such as communication distance, time delay or reliability etc. can not meet V2X business to passing
The technical need of defeated index.For V2X business, 3GPP TR36.885 describe three kinds of V2X deployment scenarios up to now：
It is based only upon PC5 mouths and supports the scene of V2X transmission, the scene for being based only upon the support V2X transmission of Uu mouths and based on PC5 mouths and Uu mouth branch
Hold the scene of V2X transmission.
User equipment (UE) can all move when carrying out V2X business because of position, the situation for becoming changing district occur.If UE
In wireless heterogeneous networks (RRC) connection status, UE needs to be switched to purpose cell.UE for receiving and dispatching V2X business, it is how real
It is now the problem of needing to consider with optimization handoff procedure.
For handoff procedure in existing 3GPP agreements, target eNB is None- identified UE types and knows whether UE authorizes
Close vehicle is from communication function.So, target eNB can not ensure the access of car-mounted terminal/pedestrian's terminal and exist for its distribution
PC5 mouths used in handoff procedure send pond.Particularly in the case where cell load is larger, it can not more ensure equal
Under the conditions of car-mounted terminal and pedestrian's terminal access, so as to cause handoff procedure to introduce extra time delay, and then increase V2X business
Delay.
As can be seen here, for the UE of the function of authorised vehicles short-range communication, existing handover scheme can have drop
Low switching success rate, increase handover delay and the problems such as being normally carried out of V2X business of influence.
The content of the invention
In view of this, it is a primary object of the present invention to provide a kind of switching method and system, it can improve and authorize car
The UE of short-range communication function handover success rate, reduce handover delay.
In order to achieve the above object, technical scheme proposed by the present invention is：
A kind of switching method, including：
When base station, eNdeB judges that the user equipment (UE) of this cell function of authorised vehicles short-range communication needs to switch over
When, trigger the UE and be switched to purpose cell, and workable V2V sends resource and switched in handoff procedure by the UE
Workable V2V sends resource notification to the UE after work(；
In the implementation procedure of the switching, the UE utilizes the V2V workable in handoff procedure to send resource
Transmit V2V message；
After the handover success, the UE sends resource transmission V2V using workable V2V after the handover success and disappeared
Breath.
A kind of switching system, including：Base station eNdeB and user equipment (UE)；Wherein,
Base station, for needing to switch in the user equipment (UE) for judging this cell function of authorised vehicles short-range communication
When, trigger the UE and be switched to purpose cell, and workable V2V sends resource and switched in handoff procedure by the UE
Workable V2V sends resource notification to the UE after work(；
UE, in the implementation procedure of the switching, resource to be sent using the V2V workable in handoff procedure
Transmit V2V message；After the handover success, send resource transmission V2V using workable V2V after the handover success and disappear
Breath.
In summary, switching method proposed by the present invention and system, the UE of the function of authorised vehicles short-range communication are carried out
During switching, network side will configure for the UE to be performed the transmission pond used in handoff procedure and is switched to after purpose cell in purpose
Used transmission pond in cell, so, it can effectively ensure that it can also send V2X information in handoff procedure, so as to
It can avoid causing the problems such as time delay of handoff procedure is longer, V2X business is impacted due to no transmission Pooled resources.
Brief description of the drawings
Fig. 1 is traditional V2X application type schematic diagrames；
Fig. 2 is the method flow schematic diagram of the present invention；
Fig. 3 is the method flow schematic diagram for switching embodiment in base station of the present invention；
Fig. 4 switches the method flow schematic diagram of embodiment between the base station of X2 mouths of the present invention；
Fig. 5 switches the method flow schematic diagram of embodiment between the base station of S1 mouths of the present invention；
Fig. 6 is the system architecture schematic flow sheet of the present invention.
Embodiment
It is right below in conjunction with the accompanying drawings and the specific embodiments to make the object, technical solutions and advantages of the present invention clearer
The present invention is described in further detail.
The present invention core concept be：When the UE of the function of authorised vehicles short-range communication is switched over, network side will be
UE configurations are in the transmission pond used in performing handoff procedure in non-RRC connection status and are switched to after purpose cell in mesh
Cell in used transmission pond, and notify to give the UE.So, it can effectively ensure that it can also send out in handoff procedure
V2X information is sent, causes that the time delay of handoff procedure is longer, V2X business is by shadow so as to avoid due to no transmission Pooled resources
The problems such as ringing.
Fig. 2 is the method flow schematic diagram of the present invention, as shown in Fig. 2 this method mainly includes：
Step 201, judge the user equipment (UE) needs of this cell function of authorised vehicles short-range communication as base station eNdeB
When switching over, trigger the UE and be switched to purpose cell, and workable V2V sends resource in handoff procedure by the UE
Resource notification is sent to the UE with workable V2V after handover success.
This step and existing handover scheme except that, the UE of the function of authorised vehicles short-range communication is being cut
When changing, network side, which needs to configure after UE workable V2V in handoff procedure send resource and handover success for it, can be used
V2V send resource, so, using this, workable V2V sends resource in handoff procedure, and UE locates in handoff procedure is performed
When non-RRC connection status, V2X information can be sent in PC5 mouths, and after purpose cell is switched to, above-mentioned cut can be utilized
Workable V2V sends resource transmission V2X information after changing work(into.In this way, can effectively avoid due to it is no transmission Pooled resources and
Cause the problems such as time delay of handoff procedure is longer, V2X business is impacted.
In order that the UE of non-RRC connection status easily uses distributed transmission pond, it is preferred that described in handoff procedure
In workable V2V send the transmission pond that resource is the autonomous selection modes of UE, so, UE can be directly from the transmission pond distributed
In autonomous selection resource use.
Resource is sent for workable V2V after handover success, the autonomous selection modes of UE and/or scheduling mode can be configured
V2V send pond.
Disappear it is preferred that wireless heterogeneous networks (RRC) connection in existing handoff procedure can be used to reconfigure in this step
Breath carries out the notice, and specific method is as follows：
The base station sends RRC connection reconfiguration messages to the UE, and movement is carried in the RRC connections reconfiguration message
Control information (MobilityControlInfo), special V2V send resource distribution cell (SL-
V2VTxPoolExceptionalConfig) and purpose cell V2V sends resource distribution cell (SL-V2VTxPoolConfig).
Wherein, the MobilityControlInfo is used to indicate handoff parameter, and particular content is compared with system, herein
Repeat no more.
The special V2V sends resource distribution cell and is used to indicate that the V2V workable in handoff procedure is sent
Resource, the purpose cell V2V send resource distribution cell and send money for workable V2V after indicating the handover success
Source.The two cells are the newly-increased cell in RRC connection reconfiguration messages, can specifically utilize RRC connection reconfiguration messages
In reserved field realize.
Specifically, SL-V2VTxPoolExceptionalConfig cells will include auxiliary link V2V transmission pool lists SL-
V2VTxPoolList, in the list including at least an auxiliary link V2V resource pools SL-V2VResourcePool.SL-
V2VResourcePool mainly includes auxiliary link CP length, V2V control information sends resource distribution, the autonomous selection modes of UE
V2V data send resource distribution, and the cell such as auxiliary link transmit power relevant configured parameter.Resource distribution cell is sent to include
Time domain configured information and frequency domain configured information, configured by the cell to obtain available time-frequency domain resources.
SL-V2VTxPoolConfig cells include V2V and send resource V2VTxResources.In V2VTxResources
In comprising foundation/release V2V send resource distribution, send resource comprising scheduling mode V2V in establishing V2V and sending resource distribution
The V2V of configuration and/or the autonomous selection modes of UE sends resource distribution.Scheduling mode V2V, which sends resource distribution, mainly includes auxiliary chain
Road CP length, V2V control information send resource distribution, Sidelink BSR relevant configuration, SL-RNTI, and alternatively SPS
SL-RNTI and MCS.And the V2V of the autonomous selection modes of UE sends resource distribution and includes the V2V transmission generally proprietary configurations in pond
V2VTxPoolNormalDedicated, the increase list of V2V resource pools is included in V2VTxPoolNormalDedicated
V2VpoolToAddListV2V and resource pool release list V2VpoolToReleaseList.Wherein V2VpoolToAddList
Including at least an increased auxiliary link V2V resource pool V2VpoolToAdd, include and send comprising V2V in V2VpoolToAdd
Pond ID (TxPoolIdentity) and auxiliary link V2V resource pools SL-V2VResourcePool.V2VpoolToReleaseList
Including at least the transmission pond ID of a release resource pool.
Step 202, in the implementation procedure of the switching, the UE utilizes the V2V workable in handoff procedure
Send resource transmission V2V message.
Step 203, after the handover success, workable V2V sends resource after the UE utilizes the handover success
Transmit V2V message.
Further, when it is described switch to switch between base station when, source base station needs to notify by source to destination RRC transparent transmissions
This UE of purpose eNB terminal type and the function of authorised vehicles short-range communication, so, target eNB can be that its configuration is corresponding
The resource that can ensure that its access, to ensure UE smooth access, reduce handover delay, it is ensured that its V2X business is smoothly entered
OK.Specifically, following methods can be used to realize：
The base station in handover request (Handover Request) message or switching by requiring (Handover
Required vehicle short-range communication mandate (Vehicle-ProSe Authorized) cell) is carried in message, by the UE
Terminal type and the function of authorised vehicles short-range communication notify to the purpose base station.
According to the close vehicle from Communications Authorization cell, being distributed for the UE can in handoff procedure for the purpose base station
Workable V2V sends resource after the V2V used sends resource and switched successfully, and passes through handover request ack message or switching
It is required that response message notifies the result distributed the source base station to the switching.
In order to ensure the successful switch of car-mounted terminal, when the UE is car-mounted terminal, the purpose base station will use excellent
The principle for first distributing resource distributes above two V2V transmission resources for UE.In this way, under equal conditions can preferentially it ensure vehicle-mounted
The priority of the access of terminal, i.e. car-mounted terminal access is higher than pedestrian's terminal.
In actual applications, can also be by being required in handover request (Handover Request) message or switching
Carried in (Handover Required) message and UE terminal type is notified using different Communications Authorization cells, such as, it is right
In car-mounted terminal, using above-mentioned Vehicle-ProSe Authorized cells come indicate UE terminal type for car-mounted terminal and
The function of authorised vehicles short-range communication, using the pedestrian and close vehicle newly increased from Communications Authorization (Pedestrian-
ProSe Authorized) cell notifies this UE of purpose eNB to be pedestrian's terminal and authorized pedestrian and close vehicle from communication
Function.
It is preferred that in order to further ensure that UE smoothly accesses purpose cell, the purpose base station can be according to the vehicle
Short-range communication mandate cell, according to Preferred Acceptance and the principle of resource allocation, default bearing and distribution V2X are accessed for the UE
Related resource.So, purpose eNB, can be near to authorised vehicles on acceptance judging strategy in the terminal access of process switching
The terminal of distance communication function carries out specially treated, to ensure car-mounted terminal switching money related to V2X to the access of pedestrian's terminal
The distribution in source.
Using such scheme, it can effectively ensure that UE V2V business is unaffected in handoff procedure, likewise, this hair
It is bright to be also applied for ensuring that V2P business is smoothed out in handoff procedure.In order to support that V2P business is smooth in handoff procedure
Carry out, for switching between eNode B, as described above, by X2 message Handover Request and S1 message Handover
Required message is extended, and increase pedestrian is with close vehicle from Communications Authorization (Pedestrian-ProSe
Authorized) cell, this UE of target eNB can be notified to be pedestrian's terminal and authorized pedestrian with close vehicle from the work(that communicates
Can, ensure its access in this way, target eNB can be allowed to be directed to pedestrian's terminal and send the configuration in pond.Meanwhile and above-mentioned V2V
Business is the same, increases special V2P newly in RRC connection reallocation messages and sends resource distribution (SL-
V2PTxPoolExceptionalConfig) cell and the V2P of purpose cell send resource distribution (SL-
V2PTxPoolConfig) cell.The content that the two cells are included sends similar, i.e., the special V2P of resource distribution with V2V
Send resource distribution and be used to indicate that in handoff procedure workable V2P to send resource, the V2P of purpose cell sends resource distribution
For indicating that workable V2P sends resource after switching successfully.The two cells are the newly-increased letter in RRC connection reconfiguration messages
Member, specifically the reserved field in RRC connection reconfiguration messages can be utilized to realize.
For the ease of understanding the such scheme of the present invention, below based on switching flow in existing eNodeB, X2 mouths
Switching flow between the eNodeB of switching flow and S1 mouths between eNodeB, to switching flow, X2 in the eNodeB after the application present invention
Switching flow is described in detail respectively between the eNodeB of switching flow and S1 mouths between the eNodeB of mouth.
Fig. 3 be the present invention eNodeB in switching embodiment schematic flow sheet, as shown in figure 3, the switching flow include with
Lower step：
Step 301, UE send resource distribution cell according to V2V in the RRC connection reconfiguration messages of cell-of-origin and configure the UE
V2V send pond, and V2V message is transmitted by the Sidelink links of PC5 mouths.
In this step, the UE of the function of authorised vehicles short-range communication before the handover, is provided using the PC5 mouths of cell-of-origin configuration
Transmit V2V message in source.
Step 302, UE are measured accordingly according to the measurement configuration that eNB is provided, and according to criterion reporting measurement reports.
Step 303, eNodeB judgements switch in eNodeB, and determine the purpose cell of UE switchings.
Step 304, eNodeB send RRC Connection Reconfigration message to UE, are carried in the message
MobilityControlInfo, special V2V send money source and destination cell V2V and send resource distribution cell to indicate that UE enters
Purpose cell sends resource for V2V of its configuration after row is switched to purpose cell and UE handover success.
Step 305, UE send the configuration of resource distribution cell in handoff procedure is performed, according to V2V special in step 304
The V2V of the UE sends pond, and transmits V2V message by the Sidelink links of PC5 mouths.
Here, during UE switches to purpose cell by cell-of-origin, if UE has the V2V message transmission based on PC5 mouths, make
With the transmission resource that step 305 is its configuration, the resource is that UE independently selects resource.
Step 306, UE perform handoff procedure, leave cell-of-origin, with purpose cell synchronous, start random access procedure.
After the completion of step 307, UE handover operations, return to RRC Connection Reconfigration Complete and disappear
Breath instruction eNodeB handover configurations are completed.
Step 308, UE send resource distribution cell to configure after the completion of switching, according to purpose cell V2V in step 304
The V2V of the UE sends pond, and transmits V2V message by the Sidelink links of PC5 mouths.
Step 309-310, eNodeB triggers Path Switch flows, and it is small that notice core net (EPC) UE has been resident purpose
Area.
Fig. 4 switches embodiment schematic flow sheet between being the eNodeB of the X2 mouths of the present invention, as shown in figure 4, the switching flow
Comprise the following steps：
Step 401, UE send resource distribution cell according to V2V in the RRC connection reconfiguration messages of cell-of-origin and configure the UE
V2V send pond, and V2V message is transmitted by the Sidelink links of PC5 mouths.
Step 402, UE are measured accordingly according to the measurement configuration that eNB is provided, and according to criterion reporting measurement reports.
Step 403, source eNodeB make decisions according to measurement report, it is determined that triggering X2 mouth switching flows.
Step 404, source eNodeB send Handover Request message to purpose eNodeB.Indicative purpose eNodeB is created
Switching UE UE contexts are built, include the information (QOS parameters, XGW addresses and TEID) of carrying, the letter such as security information context
Breath, and newly-increased Vehicle-ProSe Authorized cells.
Step 405, purpose eNodeB successes send handover after target side distributes resource to source eNodeB
Request acknowlege message.
Step 406, source eNodeB send RRC Connection Reconfigration message to UE, are taken in the message
Money source and destination cell V2V, which is sent, with MobilityControlInfo, special V2V sends resource distribution cell to indicate UE
Target eNodeB and the UE are performed handover in V2V hairs in performing handoff procedure with purpose cell after handover success for its configuration
Send resource.
Step 407, source eNodeB send SN Status Transfer message to purpose eNodeB, in X2 interface
Transmit up PDCP-SN receiving-end states and descending PDCP-SN transmitting terminals state.
Step 408, UE send the configuration of resource distribution cell in handoff procedure is performed, according to V2V special in step 406
The V2V of the UE sends pond, and transmits V2V message by the Sidelink links of PC5 mouths.
Explanation is needed exist for, during UE switches to purpose cell by cell-of-origin, if UE has the V2V based on PC5 mouths
When message is sent, using the transmission resource that step 406 is its configuration, the resource is that UE independently selects resource.
Step 409, UE perform handoff procedure, leave cell-of-origin, with purpose cell synchronous, start random access procedure.
After step 410, UE and purpose cell successful synchronization, UE sends RRC Connection to purpose eNodeB
Reconfigration Complete message, instruction switching are completed.The downlink packet quilt transferred before the eNodeB of source
It is sent to UE.Moreover, the packet of up-link is sent to purpose Serving GW and PDN GW from UE.
Step 411, UE send resource distribution cell to configure after the completion of switching, according to purpose cell V2V in step 406
The V2V of the UE sends pond, and transmits V2V message by the Sidelink links of PC5 mouths.
Step 412, purpose eNodeB send Path Switch Request message to EPC, and the notice EPC UE have been cut
Target eNodeB is changed to, and carries Source MME UE S1AP ID, UE security capabilities, T-eNodeB transmission in the message
Address and TEID.
Step 413, EPC send Path Switch Request Acknowlege message to purpose eNodeB, notify mesh
ENodeB path integrations success, comprising EPC have built up successfully carrying list information (XGW addresses and TEID)) and need
The carrying list to be deleted.
Step 414, purpose eNodeB send UE context release messages to source eNodeB, and notice source eNodeB is discharged on UE
Hereafter.All signaling connections in source eNodeB release controls face and the related resource eated dishes without rice or wine.
Fig. 5 switches embodiment schematic flow sheet between being the eNodeB of the S1 mouths of the present invention, as shown in figure 5, the switching flow
Comprise the following steps：
Step 501, UE send resource distribution cell according to V2V in the RRC connection reconfiguration messages of cell-of-origin and configure the UE
V2V send pond, and V2V message is transmitted by the Sidelink links of PC5 mouths.
Step 502, UE are measured accordingly according to the measurement configuration that eNB is provided, and according to criterion reporting measurement reports.
Step 503, source eNodeB make decisions according to measurement report, it is determined that triggering S1 mouth switching flows.
Step 504, source eNodeB send Handover Required message to EPC.Target eNodeB- is carried in message
ID, the carrying for needing data forwarding, the cells such as the instruction of direct forward from source eNB to purpose eNB whether can be carried out, and
Newly-increased Vehicle-ProSe Authorized cells.
Step 505, EPC send Handover Request message to purpose eNodeB.Indicative purpose eNodeB is created and cut
UE UE contexts are changed, include the information (QOS parameters, SGW addresses and TEID) of carrying, the information such as security information context.
Step 506, purpose eNodeB successes send Handover Request after target side distributes resource to EPC
Acknowledge message.The eNodeB of notice EPC mesh is ready for switching.The message includes purpose eNodeB each to hold
Allocation of downlink address and TEID are carried, and purpose cell V2V sends resource distribution cell.
Step 507, EPC send Handover Command to source eNodeB.
Step 508, source eNodeB send RRC Connection Reconfigration message to UE, are taken in the message
Money source and destination cell V2V, which is sent, with MobilityControlInfo, special V2V sends resource distribution cell to indicate UE
Perform handover to purpose cell after the target eNodeB and UE is switched successfully and send resource for the V2V of its configuration.
Step 509, source eNodeB send eNB Status Transfer message to EPC, are passed for being uploaded in S1 interfaces
Row PDCP-SN receiving-end states and descending PDCP-SN transmitting terminals state.
Step 510, EPC send MME Status Transfer message to purpose eNodeB.
Step 511, UE send the configuration of resource distribution cell in handoff procedure is performed, according to V2V special in step 508
The V2V of the UE sends pond, and transmits V2V message by the Sidelink links of PC5 mouths.
Note：During referred to UE switches to purpose cell by cell-of-origin, if UE has the V2V message based on PC5 mouths to send
When, using the transmission resource that step 508 is its configuration, the resource is that UE independently selects resource.
Step 512, UE perform handoff procedure, leave cell-of-origin, with purpose cell synchronous, start random access procedure.
After step 513, UE and purpose cell successful synchronization, UE sends RRC Connection to purpose eNodeB
Reconfigration Complete message, instruction switching are completed.The downlink packet quilt transferred before the eNodeB of source
It is sent to UE.Moreover, the packet of up-link is sent to purpose Serving GW and PDN GW from UE.
Step 514, UE send resource distribution cell to configure after the completion of switching, according to purpose cell V2V in step 508
The V2V of the UE sends pond, and transmits V2V message by the Sidelink links of PC5 mouths.
Step 515, purpose eNodeB send HANDOVER NOTIFY messages to EPC, and notice EPC switchings are completed.
Step 516, EPC send UE context release messages, notice source eNodeB release UE contexts to source eNodeB.
Step 517, all signaling connections in source eNodeB release controls face and the related resource eated dishes without rice or wine, returned to EPC
UE Context Release Complete message.
The message in embodiment shown in above-mentioned Fig. 3~5 is compared with the message in system handover scheme, except that one
(RRC connections reconfiguration message, Handover Request message and Handover Required message) carries in a little message
Newly-increased information, will not be repeated here.
Fig. 6 is the switching system structural representation corresponding with the method shown in above-mentioned Fig. 2, as shown in fig. 6, the system bag
Include：Base station eNdeB and user equipment (UE)；Wherein,
Base station, for needing to switch in the user equipment (UE) for judging this cell function of authorised vehicles short-range communication
When, trigger the UE and be switched to purpose cell, and workable V2V sends resource and switched in handoff procedure by the UE
Workable V2V sends resource notification to the UE after work(；
UE, in the implementation procedure of the switching, resource to be sent using the V2V workable in handoff procedure
Transmit V2V message；After the handover success, send resource transmission V2V using workable V2V after the handover success and disappear
Breath.
It is preferred that the base station, for sending radio resource control RRC connection reconfiguration message, the RRC to the UE
Connect and mobile control information MobilityControlInfo is carried in reconfiguration message, special V2V sends resource distribution cell
Resource distribution cell is sent with purpose cell V2V, wherein, it is described for indicating that the special V2V sends resource distribution cell
Workable V2V sends resource in handoff procedure, and the purpose cell V2V sends resource distribution cell and is used to indicate described cut
Workable V2V sends resource after changing work(into.
It is preferred that the V2V workable in handoff procedure sends the transmission pond that resource is the autonomous selection modes of UE.
It is preferred that when it is described switch to switch between base station when, the system further comprises purpose base station；
The source base station of the switching, for by being required in handover request Handover Request message or switching
Vehicle short-range communication mandate cell is carried in Handover Required message, by the terminal type of the UE and has been authorized
Close vehicle is notified to the purpose base station from communication function；
The purpose base station, for, from Communications Authorization cell, being switched according to the close vehicle for UE distribution
Workable V2V sends resource after workable V2V sends resource and switched successfully in journey, and passes through handover request ack message
Or switching requires that response message notifies the result distributed the source base station to the switching, wherein, when the UE is vehicle-mounted end
During end, the purpose base station carries out the distribution using the principle of preferential distribution resource.
It is preferred that the purpose base station, for according to the close vehicle from Communications Authorization cell, according to Preferred Acceptance and
The principle of resource allocation, default bearing and distribution V2X related resources are accessed for the UE.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (10)
- A kind of 1. switching method, it is characterised in that including：When base station, eNdeB judges that the user equipment (UE) of this cell function of authorised vehicles short-range communication needs to switch over, Trigger the UE and be switched to purpose cell, and workable V2V sends resource and handover success in handoff procedure by the UE Workable V2V sends resource notification to the UE afterwards；In the implementation procedure of the switching, the UE utilizes the V2V workable in handoff procedure to send resource transmission V2V message；After the handover success, workable V2V sends resource transmission V2V message after the UE utilizes the handover success.
- 2. according to the method for claim 1, it is characterised in that the notice includes：The base station sends radio resource control RRC connection reconfiguration message to the UE, in the RRC connections reconfiguration message Carry mobile control information MobilityControlInfo, special V2V sends resource distribution cell and purpose cell V2V hairs Resource distribution cell is sent, wherein, the special V2V sends resource distribution cell and is used to indicating described in handoff procedure to make V2V sends resource, and the purpose cell V2V sends resource distribution cell and is used to indicate workable for after the handover success V2V sends resource.
- 3. according to the method for claim 2, it is characterised in that the V2V workable in handoff procedure sends resource For the transmission pond of the autonomous selection modes of UE.
- 4. according to the method for claim 1, it is characterised in that when it is described switch to switch between base station when, methods described is entered One step includes：The base station in handover request Handover Request message or switching by requiring Handover Required message Middle carrying vehicle short-range communication mandate cell, the terminal type of the UE and the function of authorised vehicles short-range communication are notified To the purpose base station；The purpose base station, from Communications Authorization cell, can be used according to the close vehicle for UE distribution in handoff procedure V2V send resource and switch successfully after workable V2V send resource, and pass through handover request ack message or switching requires Response message notifies the result distributed the source base station to the switching, wherein, when the UE is car-mounted terminal, the mesh Base station the distribution is carried out using the principle of preferential distribution resource.
- 5. according to the method for claim 4, it is characterised in that methods described further comprises：The purpose base station according to the close vehicle from Communications Authorization cell, according to Preferred Acceptance and the principle of resource allocation, Default bearing and distribution V2X related resources are accessed for the UE.
- A kind of 6. switching system, it is characterised in that including：Base station eNdeB and user equipment (UE)；Wherein,Base station, for judge this cell function of authorised vehicles short-range communication user equipment (UE) need to switch over when, Trigger the UE and be switched to purpose cell, and workable V2V sends resource and handover success in handoff procedure by the UE Workable V2V sends resource notification to the UE afterwards；UE, in the implementation procedure of the switching, resource transmission to be sent using the V2V workable in handoff procedure V2V message；After the handover success, resource transmission V2V message is sent using workable V2V after the handover success.
- 7. system according to claim 6, it is characterised in thatThe base station, for sending radio resource control RRC connection reconfiguration message to the UE, the RRC connections reconfigure Mobile control information MobilityControlInfo is carried in message, special V2V sends resource distribution cell and purpose cell V2V sends resource distribution cell, wherein, it is described in handoff procedure for indicating that the special V2V sends resource distribution cell In workable V2V send resource, the purpose cell V2V is sent can after resource distribution cell is used to indicating the handover success The V2V used sends resource.
- 8. system according to claim 7, it is characterised in that the V2V workable in handoff procedure sends resource For the transmission pond of the autonomous selection modes of UE.
- 9. system according to claim 6, it is characterised in that when it is described switch to switch between base station when, the system is entered One step includes purpose base station；The source base station of the switching, for by requiring Handover in handover request Handover Request message or switching Vehicle short-range communication mandate cell is carried in Required message, authorised vehicles have been closely by the terminal type of the UE and Communication function is notified to the purpose base station；The purpose base station, for, from Communications Authorization cell, being distributed according to the close vehicle for the UE in handoff procedure Workable V2V sends resource after workable V2V sends resource and switched successfully, and by handover request ack message or cuts The source base station for requiring that response message notifies the result distributed to the switching is changed, wherein, when the UE is car-mounted terminal, The purpose base station carries out the distribution using the principle of preferential distribution resource.
- 10. system according to claim 9, it is characterised in thatThe purpose base station, for according to the close vehicle from Communications Authorization cell, according to Preferred Acceptance and resource allocation Principle, default bearing and distribution V2X related resources are accessed for the UE.
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