CN103686911B - A kind of method and apparatus switched over - Google Patents
A kind of method and apparatus switched over Download PDFInfo
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- CN103686911B CN103686911B CN201210343026.7A CN201210343026A CN103686911B CN 103686911 B CN103686911 B CN 103686911B CN 201210343026 A CN201210343026 A CN 201210343026A CN 103686911 B CN103686911 B CN 103686911B
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Abstract
The present embodiments relate to wireless communication technology field, more particularly to a kind of method and apparatus switched over, to solve present in prior art after Relay can not obtain wireless backhaul, to cause to access Relay UE communication disruption.The method that the present invention is switched over includes：Relay nodes determine occur the reason for causing wireless backhaul to interrupt；Relay nodes switch over processing to the user equipment for being connected to itself.Relay nodes due to causing wireless backhaul to interrupt after it is determined that occur, processing is switched over to the user equipment for being connected to itself, so as to avoid causing the problem of UE communication for accessing Relay is interrupted because Relay can not obtain wireless backhaul, signal transmission quality and efficiency of transmission are improved.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of method and apparatus switched over.
Background technology
In order to improve under high-speed mobile scene, the quality of mobile communication service introduces mobile Relay（Relaying）Skill
Art.The mobile Relay network architecture is similar with the fixed Relay network architecture, as shown in Figure 1.
Mobile Relay nodes are connected to its home base station by wave point（The base station is mobile Relay nodes
DeNB, also known as donor base station）The cell (cell is the Donor Cell of mobile Relay nodes, also known as donor cell) having under its command,
Again core net is connected to by cable network.The wave point being related in Fig. 1 includes：
Interface between mobile Relay and donor base station is Un interfaces；
The mobile Relay of ownership user terminal（R-UE）Interface between mobile Relay is Uu interfaces；
It is Uu interfaces to belong to the interface between the user terminal and donor base station of donor base station.
There is provided the processing such as signal reception, decoding, protocol conversion and data forwarding between Uu and Un interfaces by mobile Relay
Function.
It is pointed out that not all eNB（Evolution base station）It is suitable as Relay DeNB.In existing machine
In system, DeNB the and/or Donor Cell that Relay can be accessed are to need the OAM by Relay（Operations and
Maintenance, operation and maintenance）System is pre-configured with to Relay.
DeNB upgrades on the basis of common eNB to be obtained, and it provides for mobile Relay and is different from common UE（User
Equipment）Some Additional Services, such as carry out wireless backhaul（Back haul link）Distribution and configuration of Radio Resource etc..Therefore,
Mobile Relay can not obtain wireless backhaul at common eNB.
DeNB needs to upgrade on the basis of eNB to obtain, for the consideration for cost of arranging net, and operator will may not own
ENB all upgrade to DeNB.Therefore, when mobile Relay is with vehicle motion（This motion rail of particularly similar automobile
The changeable vehicles of mark）, it is likely that eNB coverings, but the place covered without DeNB can be moved to.When mobile Relay is moved
The area covered without DeNB is moved, because UE to Relay wireless signal is fine, the signal measurement result that UE is reported will not be touched
Hair Relay is switched it to；But because Relay can not obtain wireless backhaul, number can not be transmitted between Relay and core net
According to UE communication will be interrupted.
In summary, after Relay can not obtain wireless backhaul, the UE communication for accessing Relay can be caused to interrupt.
The content of the invention
The present invention provides a kind of method and apparatus switched over, to solve present in prior art when Relay without
Method is obtained after wireless backhaul, can cause to access Relay UE communication disruption.
A kind of method switched over provided in an embodiment of the present invention, including：
Relaying Relay nodes determine occur the reason for causing wireless backhaul link backhaul to interrupt；
The Relay nodes switch over processing to the user equipment for being connected to itself.
A kind of method switched over provided in an embodiment of the present invention, including：
The base station serviced for Relay nodes determines that the signal quality value of the Relay nodes is less than after first threshold,
Determine whether can as alms giver's Donor cells for the Relay node serves cell；
The base station it is determined that without can for Relay node serves cell after, to the Relay nodes send remove
The area of coverage is indicated, for indicating that the reason for Relay nodes cause wireless backhaul to interrupt occurs, the Relay nodes
Processing is switched over to the user equipment of connection.
A kind of relaying Relay nodes provided in an embodiment of the present invention, including：
Determining module, the reason for causing wireless backhaul link backhaul to interrupt for determination occurs；
Hand-off process module, for switching over processing to the user equipment for being connected to itself.
A kind of base station provided in an embodiment of the present invention, including：
Judge module, for being serviced for relaying Relay nodes, and determines the signal quality value of the Relay nodes
After first threshold, determine whether can as alms giver's Donor cells for the Relay node serves cell；
Indicating module, for it is determined that without can for Relay node serves cell after, to the Relay nodes send out
The removal area of coverage is sent to indicate, it is described for indicating that the reason for Relay nodes cause wireless backhaul to interrupt occurs
Relay nodes switch over processing to the user equipment of connection.
Relay nodes due to causing wireless backhaul to interrupt after it is determined that occur, to being connected to the use of itself
Family equipment switches over processing, so as to avoid causing to access Relay UE communication because Relay can not obtain wireless backhaul
The problem of interruption, improve signal transmission quality and efficiency of transmission.
Brief description of the drawings
The schematic network structure that Fig. 1 is mobile Relay in background technology；
Fig. 2 is the method flow schematic diagram that Relay of embodiment of the present invention nodes are switched over to UE；
Fig. 3 is the method flow schematic diagram that base station of the embodiment of the present invention notifies Relay nodes to switch over UE；
Fig. 4 is the method flow schematic diagram that OAM of the embodiment of the present invention indicates base station；
Fig. 5 is the structural representation of Relay nodes of the embodiment of the present invention；
Fig. 6 is the structural representation of base station of the embodiment of the present invention.
Embodiment
Relay of embodiment of the present invention nodes determine occur the reason for causing wireless backhaul to interrupt；Relay nodes are to even
It is connected to the user equipment of itself and switches over processing.Relay nodes are due to it is determined that cause wireless backhaul to interrupt
After appearance, processing is switched over to the user equipment for being connected to itself, so as to avoid because Relay can not be obtained wirelessly
Backhaul causes the problem of UE communication for accessing Relay is interrupted, and improves signal transmission quality and efficiency of transmission.
The embodiment of the present invention is described in further detail with reference to Figure of description.
As shown in Fig. 2 Relay of embodiment of the present invention nodes comprise the following steps to the method that UE is switched over：
Step 201, Relay nodes determine occur the reason for causing wireless backhaul to interrupt；
Step 202, Relay nodes switch over processing to the user equipment for being connected to itself.
It is preferred that if Relay nodes are mobile Relay nodes, judgement causes in wireless backhaul link backhaul
The situation whether disconnected the reason for occurs has a lot, illustrates separately below：
Situation one, the service DeNB of Relay nodes notify Relay nodes, and it will enter the region covered without DeNB.
If being indicated specifically, Relay nodes receive the removal area of coverage from serving BS, it is determined that cause wireless
The reason for backhaul is interrupted occurs, and indicates to be serving BS it is determined that Relay nodes are received wherein removing the area of coverage
The signal quality value of Donor serving cells be less than first threshold, and without can for Relay node serves cell after transmission
's.
Situation two, Relay by reading information of eating dishes without rice or wine judge that the region covered without DeNB will be entered.
It is divided into two ways again for situation two：
Mode one, Relay nodes determine that the Donor cell signal qualities value of current service is less than Second Threshold, and detection
It is more than the cell of the 3rd threshold value, corresponding PCI in PCI set less than signal quality, it is determined that cause in wireless backhaul
Disconnected the reason for, occurs, wherein PCI set include can as Donor cells the corresponding PCI of cell.
In force, it is that the cell that can be Donor reserves specific PCI set in the network planning；Then, Donor
Cell determines the PCI of oneself from reserved PCI set.
Specifically, this cell and the selected PCI of adjacent cell interaction, if PCI situations about conflicting occur, then conflict both sides
In a side be adjusted, from reserved PCI set in gravity treatment select a PCI；Otherwise, selected PCI is just used.
One has 504 available PCI in LTE system, its can in certain geographical scope one cell of unique mark.
Wherein it is possible to will be N number of in 504 available PCIs（Such as 20）Donor Cell are kept for, when Relay carries out signal survey
During amount, surveyed cell PCI can be obtained, if PCI belongs to the PCI for keeping for Donor Cell, the Cell can be chosen
Make Donor cell, be Relay node serves；Otherwise, it is impossible to be Relay node serves.
Relay nodes are it is determined that the Donor cell signal qualities value of current service detects all letters less than after Second Threshold
Number quality is more than the cell of the 3rd threshold value, and judges the corresponding PCI of these cells whether in PCI set, if do not corresponded to
PCI whether PCI set in, it is determined that the reason for causing wireless backhaul to interrupt occurs, if so, then reporting measurement result
To current service Donor cell, service Donor cell will trigger relay switchings.
Mode two, Relay nodes determine that the Donor cell signal qualities value of current service is less than Second Threshold, and detection
It is more than less than signal quality in the 4th threshold value, the system message of broadcast comprising the cell for supporting RN configured informations, it is determined that cause
The reason for wireless backhaul is interrupted occurs.
In force, increase supports RN to indicate in system message, can be used as donor cell cell in system message
Middle broadcast instruction.
Relay nodes determine that the Donor cell signal qualities value of current service is less than after Second Threshold, detect all signals
Quality is more than the system message of the Cell Broadcast CB of the 4th threshold value, if no one of system message of broadcast refers to comprising support RN
Show the cell of information, it is determined that the reason for causing wireless backhaul to interrupt occurs；Otherwise, report measurement result gives current service
Donor cell, service Donor cell will trigger relay switchings.
Wherein, the signal quality in the embodiment of the present invention refers to the quality for the wireless signal that receiving terminal detection is received.
It is preferred that for mode two in order to avoid excessive fetching adjacent domain system message, Relay can use such as lower section
Method selection needs the cell of read system message：Relay is after analysis measurement result, and the preferable non-serving of selection signal quality is small
Area, reads its system message, supports RN to indicate to determine if to carry（Whether can be accessed as donor cell）.
Specifically, Relay nodes read other in addition to the Donor cells of service that signal quality is more than the 4th threshold value
The system message of cell.
It is preferred that if Relay nodes are fixed Relay nodes, judgement causes in wireless backhaul link backhaul
The situation whether disconnected the reason for occurs has a lot, illustrates separately below：
Situation one, Relay nodes determine that wireless backhaul quality is less than the 5th threshold value, it is determined that cause wireless
The reason for backhaul is interrupted occurs.
Situation two, Relay nodes determine to need to discharge wireless backhaul, it is determined that cause what wireless backhaul was interrupted
Reason occurs.
In force, the threshold value in above-mentioned situation can as needed, emulation etc. set.
It is preferred that in step 202, when Relay nodes switch over processing to the user equipment for being connected to itself, can adopt
With a kind of Target cell of selection hand-off process in following manner：
Relay nodes select the Target cell that the Donor cells of itself current service are switched over as user equipment；Or
Relay nodes, according to the mobility measurements result of itself, are the Target cell that user equipment selection is switched over；
Relay nodes, according to the mobility measurements result of user equipment to report, are the mesh that user equipment selection is switched over
Mark cell.
As shown in figure 3, base station of the embodiment of the present invention notifies the method that Relay nodes are switched over to UE to include following step
Suddenly：
Step 301, the base station serviced for Relay nodes determine the signal quality value of Relay nodes less than the first threshold
After value, determine whether can as alms giver's Donor cells for Relay node serves cell；
Step 302, base station it is determined that without can for Relay node serves cell after, to Relay nodes send remove
The area of coverage indicates that, for indicating that the reason for Relay nodes cause wireless backhaul to interrupt occurs, Relay nodes are to connection
User equipment switches over processing.
Here the signal quality value of Relay nodes is the signal quality value that the Relay nodes received are reported, i.e.,
Relay nodes provide wireless backhaul signal quality value.
In force, base station determines whether can there is many kinds for the mode of the cell of Relay node serves, arranges below
Lift several：
First, base station is according to from OAM（Operations and Maintenance, operation and maintenance）Equipment is each base
Stand configuration Neighboring Cell List in indicate adjacent area whether can as Donor cells information, determine whether can for Relay section
The cell of point service.
Specifically, OAM equipment indicates whether adjacent area can be as Donor in the Neighboring Cell List configured for each eNB
Cell, such as indicate whether corresponding adjacent area can be used as Donor cell using 1bit.Such as " 1 " is can be so that " 0 " is can not
With.
2nd, base station according to from other base stations whether can as donor base station DeNB information, determine whether energy
Enough it is the cell of Relay node serves.
Specifically, when setting up X2 interface between eNB, interaction oneself whether can as DeNB information.Specifically may be used
To be set up in existing X2 in the message of process, increase 1bit Donor indicates to come whether this eNB can be used as DeNBl.For example
" 1 " is can be so that " 0 " is cannot.Or
In eNB configuration update messages, interaction oneself whether can as DeNB information.Specifically can be existing
In eNB config update request messages, increase 1bit Donor indicates to indicate whether this eNB can be as DeNB.Such as " 1 "
For can be with, " 0 " is cannot.
In force, base station by X2 interface send itself whether can as donor base station DeNB information.
X2 interface is the interface between base station, the place of user data transmission, user data and signaling between completion base station
Reason etc..
Several examples are enumerated below for above-mentioned several situations to illustrate.
Example one, Relay service DeNB notify Relay, and it will enter the region covered without DeNB.
As shown in figure 4, OAM of the embodiment of the present invention indicates that the method for base station comprises the following steps：
Indicate whether adjacent area can be as Donor cell in the Neighboring Cell List that step 401, OAM configure for each eNB；
Step 402, the service DeNB of Relay nodes receive the measurement report that Relay is sent；
The measurement report that step 403, the service DeNB analysis Relay nodes of Relay nodes are reported, if Relay is small at this
Area's signal quality then determines whether to can be used as the Donor cell of Target cell already less than first threshold.If it has not, then
Perform step 404；If any then triggerable Relay switchings.
Step 404, service DeNB notify Relay nodes, and it is possibly removed the DeNB areas of coverage；
Above-mentioned service DeNB determines that a kind of possible implementation method for the Donor cell that not can be used as Target cell is：
According to Relay measurement report, service DeNB has found Relay current service cell signal quality already less than first threshold,
And measurement report is shown, signal quality is preferable（Such as signal quality is more than first threshold）Cell in, not can be used as Donor
Cell cell.
The service DeNB of Relay nodes is sent to Relay to be removed after the area of coverage indicates, optionally, Relay nodes are to DeNB
Return to ACK（Confirm）Response.
Step 405：When Relay nodes confirm to enter the region without DeNB coverings, Relay nodes will its lower clothes
The UE of business is switched to suitable Target cell.The switching flow used can continue to use existing UE switching flows, herein no longer
Repeat.Specific to the selection of UE switching target small areas, Relay nodes can using be implemented as described below in scheme any one or it is many
The combination planted：
The target cell that the service Donor cell that Relay nodes select oneself current switch as UE；
Relay nodes, according to the mobility measurements result of oneself, are UE selection target cell, for example Relay is according to oneself
To the measurement result of each cell of network, the preferable cell of the formation selection signal quality such as the load of each cell as UE switching mesh
Mark cell；
The mobility measurements result that Relay nodes are reported according to UE, is UE selection targets cell（With existing target cell's
Selection mechanism is identical）, such as UE reports oneself measurement result to each cell of network, Relay nodes based on UE report it is each small
The signal in area, the preferable cell of formation selection signal quality such as the load of each cell as UE switching target cell.
Indicate whether adjacent area can walk as Donor cell in the Neighboring Cell List configured except OAM equipment for each eNB
In rapid 401, when can also set up X2 interface between eNB, interaction oneself whether can as DeNB information；Can also be
In eNB configuration update messages, interaction oneself whether can as DeNB information.
Example two, Relay nodes by reading metrical information of eating dishes without rice or wine judge that the region covered without DeNB will be entered
Step 1：It is that the cell that can be Donor reserves specific PCI in the network planning（Physical Cell ID,
Physical cell identity）Set；
Step 2：Donor cell determine the PCI of oneself from reserved PCI set；
Step 3：Relay nodes are by measurement process of eating dishes without rice or wine, it is determined that can be detected the PCI of cell.If taken currently
During Donor cell signals variation of being engaged in, Relay nodes can not detect a signal quality preferably, and PCI belongs to above-mentioned reserved
The cell of set, then Relay nodes judge its will enter without DeNB cover region.
Step 4：It is identical with the step 405 of example one.
Example three, Relay nodes by reading system message of eating dishes without rice or wine judge that the region covered without DeNB will be entered：
Step 1：Increase supports RN to indicate in system message, and the cell that can be used as Donor cell is wide in system message
Broadcast the instruction；
Step 2：Correspondence is indicated in Relay node read system messages, and combines measurement result of eating dishes without rice or wine, and judging whether will
Into the region covered without DeNB.If when current service Donor cell signals are deteriorated, Relay nodes can not be detected
One signal quality preferably, and broadcasts the cell for supporting that RN is indicated, then Relay judges that it will enter what no DeNB was covered
Region.
In order to avoid excessive fetching adjacent domain system message, Relay nodes can need to read using following method choice
Take the cell of system message：Relay nodes are after analysis measurement result, the preferable non-service cell of selection signal quality, read
Its system message, supports RN to indicate to determine if to carry（I.e.：Whether can be accessed as donor cell）.
Step 3：It is identical with the step 405 of example one.
Based on same inventive concept, additionally provide and UE is entered in the embodiment of the present invention with Relay nodes of the embodiment of the present invention
The corresponding Relay nodes of method of row switching, because the equipment solves the principle and Relay nodes pair of the embodiment of the present invention of problem
The method that UE is switched over is similar, therefore the implementation of the equipment may refer to the implementation of method, repeats part and repeats no more.
As shown in figure 5, the Relay nodes of the embodiment of the present invention include：Determining module 50 and hand-off process module 51.
Determining module 50, the reason for causing wireless backhaul to interrupt for determination occurs；
Hand-off process module 51, for switching over processing to the user equipment for being connected to itself.
If Relay nodes are mobile Relay nodes；It is preferred that determining module 50 receives the shifting from serving BS
Go out after area of coverage instruction, it is determined that the reason for causing wireless backhaul to interrupt occurs, indicate it is service base wherein removing the area of coverage
Stand it is determined that the signal quality value for alms giver's Donor serving cells that Relay nodes are received is less than first threshold, and without can
Sent after cell for Relay node serves；Or determine that the Donor cell signal qualities value of current service is less than the second threshold
Value, and can't detect signal quality more than the 3rd threshold value, corresponding physical cell identity PCI after the cell during PCI gathers, really
Surely the reason for causing wireless backhaul to interrupt occurs, and wherein PCI set includes can be corresponding for the cell of Donor cells
PCI；Or determine that the Donor cell signal qualities value of current service is less than Second Threshold, and can't detect signal quality and be more than the
Comprising after the cell for supporting via node RN configured informations in four threshold values, the system message of broadcast, it is determined that causing wireless
The reason for backhaul is interrupted occurs.
If it is preferred that being judged to cause whether the reason for wireless backhaul is interrupted occurs according to system message, it is determined that mould
Block 50 reads the system message that signal quality is more than other cells in addition to the Donor cells of service of the 4th threshold value.
If Relay nodes are fixed Relay nodes；It is preferred that determining module 50 determines wireless backhaul quality
After the 5th threshold value, it is determined that the reason for causing wireless backhaul to interrupt occurs；Or determine to need to discharge wireless backhaul
Afterwards, it is determined that the reason for causing wireless backhaul to interrupt occurs.
It is preferred that hand-off process module 51 selects the Donor cells of itself current service to be switched over as user equipment
Target cell；Or be the Target cell that user equipment selection is switched over according to the mobility measurements result of itself；Or according to
The mobility measurements result of user equipment to report, is the Target cell that user equipment selection is switched over.
Based on same inventive concept, additionally provided in the embodiment of the present invention and notify Relay sections with base station of the embodiment of the present invention
The corresponding base station of method that point is switched over to UE, because the equipment solves the principle and base station of embodiment of the present invention notice of problem
The method that Relay nodes are switched over to UE is similar, therefore the implementation of the equipment may refer to the implementation of method, repeat part not
Repeat again.
As shown in fig. 6, the base station of the embodiment of the present invention includes：Judge module 60 and indicating module 61.
Judge module 60, for being serviced for Relay nodes, and determines that the signal quality value of Relay nodes is less than the
After one threshold value, determine whether can as alms giver's Donor cells for Relay node serves cell；
Indicating module 61, for it is determined that without can for Relay node serves cell after, to Relay nodes send
Remove the area of coverage to indicate, for indicating that the reason for Relay nodes cause wireless backhaul to interrupt occurs, Relay nodes are to even
The user equipment connect switches over processing.
It is preferred that judge module 60 is according to instruction adjacent area in the Neighboring Cell List configured from OAM equipment for each base station
It is no can as Donor cells information, determine whether can be Relay node serves cell；Or according to from other
Base station whether can as donor base station DeNB information, determine whether can be Relay node serves cell.
It is preferred that judge module 60 by X2 interface send itself whether can as donor base station DeNB information.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can be used in one or more computers for wherein including computer usable program code
Usable storage medium（Including but not limited to magnetic disk storage, CD-ROM, optical memory etc.）The computer program production of upper implementation
The form of product.
The present invention is with reference to method according to embodiments of the present invention, equipment（System）And the flow of computer program product
Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (12)
1. a kind of method switched over, it is characterised in that this method includes：
Relaying Relay nodes determine occur the reason for causing wireless backhaul link backhaul to interrupt；
The Relay nodes switch over processing to the user equipment for being connected to itself；
Wherein, the Relay nodes are mobile Relay nodes；
The Relay nodes determine occur the reason for causing wireless backhaul to interrupt, including：
The Relay nodes are received after the removal area of coverage instruction from serving BS, it is determined that causing in wireless backhaul
Disconnected the reason for, occurs, wherein the removal area of coverage indicates to be serving BS it is determined that the alms giver that the Relay nodes are received
The signal quality value of Donor serving cells be less than first threshold, and without can for Relay node serves cell after transmission
's；Or
The Relay nodes determine that the Donor cell signal qualities value of current service is less than Second Threshold, and can't detect signal
Quality is more than after the cell of the 3rd threshold value, corresponding physical cell identity PCI in PCI set, it is determined that causing wireless
The reason for backhaul is interrupted occurs, wherein the PCI gathers the corresponding PCI of cell including that can be Donor cells；Or
The Relay nodes determine that the Donor cell signal qualities value of current service is less than Second Threshold, and can't detect signal
Quality is more than comprising after the cell for supporting via node RN configured informations in the 4th threshold value, the system message of broadcast, it is determined that causing
The reason for wireless backhaul is interrupted occurs.
2. the method as described in claim 1, it is characterised in that the Relay nodes judge to cause wirelessly according to system message
Whether the reason for backhaul is interrupted occurs；
The Relay nodes determination causes before the reason for wireless backhaul is interrupted appearance, in addition to：
The Relay nodes read signal quality more than other cells in addition to the Donor cells of service of the 4th threshold value
System message.
3. the method as described in claim 1, it is characterised in that the Relay nodes enter to the user equipment for being connected to itself
Before row hand-off process, in addition to：
The Relay nodes select the Target cell that the Donor cells of itself current service are switched over as user equipment；Or
The Relay nodes, according to the mobility measurements result of itself, are the Target cell that user equipment selection is switched over；Or
The Relay nodes, according to the mobility measurements result of user equipment to report, are the mesh that user equipment selection is switched over
Mark cell.
4. a kind of method switched over, it is characterised in that this method includes：
The base station serviced for Relay nodes determines that the signal quality value of the Relay nodes is less than after first threshold, judges
Whether have can as alms giver's Donor cells for the Relay node serves cell；
The base station it is determined that without can for Relay node serves cell after, to the Relay nodes send remove covering
Area is indicated, for indicating that the reason for Relay nodes cause wireless backhaul to interrupt occurs, and the Relay nodes are to even
The user equipment connect switches over processing.
5. method as claimed in claim 4, it is characterised in that the base station determines whether can be Relay node serves
Cell, including：
The base station according to come self-operating and safeguard OAM equipment for each base station configure Neighboring Cell List in indicate adjacent area whether may be used
Using the information as Donor cells, determine whether can be Relay node serves cell；Or
The base station according to from other base stations whether can as donor base station DeNB information, determine whether can be
The cell of Relay node serves.
6. method as claimed in claim 5, it is characterised in that this method also includes：
The base station by X2 interface send itself whether can as donor base station DeNB information.
7. one kind relaying Relay nodes, it is characterised in that the Relay nodes include：
Determining module, the reason for causing wireless backhaul link backhaul to interrupt for determination occurs；
Hand-off process module, for switching over processing to the user equipment for being connected to itself；
Wherein, the Relay nodes are mobile Relay nodes；
The determining module specifically for：
Receive after the removal area of coverage instruction from serving BS, it is determined that the reason for causing wireless backhaul to interrupt occurs,
The wherein described removal area of coverage indicates to be serving BS it is determined that alms giver's Donor serving cells that the Relay nodes are received
Signal quality value be less than first threshold, and without can be Relay node serves cell after send；Or determine current clothes
The Donor cell signal qualities value of business is less than Second Threshold, and can't detect signal quality more than the 3rd threshold value, corresponding cell
After cells of the physical label PCI in PCI set, it is determined that the reason for causing wireless backhaul to interrupt occurs, wherein the PCI
Gather the corresponding PCI of cell including that can be Donor cells；Or determine that the Donor cell signal quality values of current service are small
In Second Threshold, and can't detect signal quality more than in the 4th threshold value, the system message of broadcast comprising supporting via node RN
After the cell of configured information, it is determined that the reason for causing wireless backhaul to interrupt occurs.
8. Relay nodes as claimed in claim 7, it is characterised in that the determining module is additionally operable to：
If being judged to cause whether the reason for wireless backhaul is interrupted occurs according to system message, read signal quality and be more than the
The system message of other cells in addition to the Donor cells of service of four threshold values.
9. Relay nodes as claimed in claim 7, it is characterised in that the hand-off process module is additionally operable to：
The Target cell for selecting the Donor cells of itself current service to be switched over as user equipment；Or according to the shifting of itself
Dynamic property measurement result, is the Target cell that user equipment selection is switched over；Or according to the mobility measurements of user equipment to report
As a result, it is the Target cell that switches over of user equipment selection.
10. a kind of base station, it is characterised in that the base station includes：
Judge module, for being serviced for relaying Relay nodes, and determines that the signal quality value of the Relay nodes is less than
After first threshold, determine whether can as alms giver's Donor cells for the Relay node serves cell；
Indicating module, for it is determined that without can for Relay node serves cell after, to the Relay nodes send use
Occur in the reason for the instruction Relay nodes cause wireless backhaul to interrupt, and indicate the Relay nodes to connection
The removal area of coverage that user equipment switches over processing is indicated.
11. base station as claimed in claim 10, it is characterised in that the judge module is additionally operable to：
According to come self-operating and safeguard OAM equipment for each base station configure Neighboring Cell List in indicate adjacent area whether can conduct
The information of Donor cells, determine whether can be Relay node serves cell；Or according to from other base stations whether
Can as donor base station DeNB information, determine whether can be Relay node serves cell.
12. base station as claimed in claim 11, it is characterised in that the judge module is additionally operable to：
By X2 interface send itself whether can as donor base station DeNB information.
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| CN107535012B (en) * | 2015-05-14 | 2021-12-10 | 富士通株式会社 | Relay selection or reselection method, device and system |
| CN108632919A (en) * | 2017-03-23 | 2018-10-09 | 索尼公司 | Electronic device and wireless communications method for wireless communication |
| WO2019204966A1 (en) | 2018-04-23 | 2019-10-31 | 北京小米移动软件有限公司 | Method and device for recovering and establishing wireless backhaul link |
| CN110876175B (en) * | 2018-08-31 | 2021-07-16 | 大唐移动通信设备有限公司 | Link interruption processing method, relay node and computer readable storage medium |
| CN111818592A (en) * | 2019-07-31 | 2020-10-23 | 维沃移动通信有限公司 | Network switching method, network equipment and terminal |
| CN111818593A (en) * | 2019-07-31 | 2020-10-23 | 维沃移动通信有限公司 | Network switching method and terminal |
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