CN103686911A - Switching method and switching equipment - Google Patents
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- CN103686911A CN103686911A CN201210343026.7A CN201210343026A CN103686911A CN 103686911 A CN103686911 A CN 103686911A CN 201210343026 A CN201210343026 A CN 201210343026A CN 103686911 A CN103686911 A CN 103686911A
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Abstract
The embodiment of the invention relates to the technical communication of wireless communication, and particularly relates to a switching method and switching equipment to solve the problem that the communication of UE (User Equipment) accessing to Relay is interrupted after the Relay is incapable of obtaining wireless backhaul in the prior art. The switching method comprises the following steps: determining the generation of a reason of causing the interruption of the wireless backhaul by the Relay node; carrying out switching processing on the UE connected to the Relay node by the Relay node. The switching processing is carried out on the UE connected to the Relay node after the generation of the reason of causing the interruption of the wireless backhaul is determined by the Relay node, thus the problem that the communication of the UE accessing to the Relay is interrupted since the Relay is incapable of obtaining the backhaul is prevented, and the signal transmission quality and transmission efficiency are improved.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of method and apparatus switching.
Background technology
In order to improve under high-speed mobile scene, the quality of Mobile Communication Service, has introduced mobile Relay(relaying) technology.The network architecture of the network architecture of mobile Relay and fixedly Relay is similar, as shown in Figure 1.
Mobile Relay node is connected to its home base station by wave point, and (this base station is the DeNB of mobile Relay node, claiming again donor base station) (this community is the Donor Cell of mobile Relay node for the community that has under its command, claim again alms giver community), then be connected to core net through cable network.The wave point relating in Fig. 1 comprises:
Interface between mobile Relay and donor base station is Un interface;
Belonging to the user terminal (R-UE) of mobile Relay and the interface between mobile Relay is Uu interface;
User terminal and the interface between donor base station of ownership donor base station are Uu interface.
Mobile Relay, between Uu and Un interface, provides the processing capacities such as signal reception, decoding, protocol conversion and data retransmission.
It is pointed out that not all eNB(evolution base station) be all suitable as the DeNB of Relay.In current mechanism, the DeNB that Relay can access and/or Donor Cell are need to be by the OAM(Operations and Maintenance of Relay, operation and maintenance) the pre-configured Relay that gives of system.
DeNB upgrades and obtains on the basis of common eNB, and it is different from common UE(subscriber equipment for mobile Relay provides) some Additional Services, as carry out wireless backhaul(back haul link) distribution of Radio Resource and configuration etc.Therefore, mobile Relay can not obtain wireless backhaul from common eNB.
DeNB need to upgrade and obtain on the basis of eNB, and for the consideration of the cost of arranging net, operator may not can all upgrades to DeNB by all eNB.Therefore, when mobile Relay is during with vehicle motion (the particularly this changeable vehicles of movement locus of similar automobile), moved to possibly eNB and covered, but the place that does not have DeNB to cover.When mobile Relay moves to the area that does not have DeNB to cover, because UE is fine to the wireless signal of Relay, the signal measurement result that UE reports can not trigger Relay and be switched; But because Relay cannot obtain wireless backhaul, between Relay and core net, cannot transmit data, the communication of UE will be interrupted.
In sum, when Relay cannot obtain after wireless backhaul, can cause the UE communication disruption of access Relay.
Summary of the invention
The invention provides a kind of method and apparatus switching, in order to solve cannot obtaining after wireless backhaul as Relay of existing in prior art, can cause the UE communication disruption problem of access Relay.
A kind of method of switching that the embodiment of the present invention provides, comprising:
Relaying Relay node determination causes the reason that wireless backhaul link backhaul interrupts to occur;
Described Relay node carries out hand-off process to the subscriber equipment that is connected to self.
A kind of method of switching that the embodiment of the present invention provides, comprising:
For the base station that Relay node is served, determine that the signal quality value of described Relay node is less than after first threshold, judging whether can be as the community of the alms giver Donor community for described Relay node service;
Described base station is after determining the community that does not have to serve for Relay node, to described Relay node, send and shift out area of coverage indication, be used to indicate described Relay node and cause the reason that wireless backhaul interrupts to occur, described Relay node carries out hand-off process to the subscriber equipment connecting.
A kind of relaying Relay node that the embodiment of the present invention provides, comprising:
Determination module, causes the reason that wireless backhaul link backhaul interrupts to occur for determining;
Hand-off process module, for carrying out hand-off process to the subscriber equipment that is connected to self.
A kind of base station that the embodiment of the present invention provides, comprising:
Judge module, is used to relaying Relay node to serve, and determines that the signal quality value of described Relay node is less than after first threshold, and judging whether can be as the community of the alms giver Donor community for described Relay node service;
Indicating module, for after determining the community that does not have to serve for Relay node, to described Relay node, send and shift out area of coverage indication, be used to indicate described Relay node and cause the reason that wireless backhaul interrupts to occur, described Relay node carries out hand-off process to the subscriber equipment connecting.
Because Relay node is after determining the reason appearance that causes wireless backhaul interruption, the subscriber equipment that is connected to self is carried out to hand-off process, thereby avoid, because Relay cannot obtain the problem that wireless backhaul causes the UE communication disruption of access Relay, having improved signal transmission quality and efficiency of transmission.
Accompanying drawing explanation
Fig. 1 is the schematic network structure of mobile Relay in background technology;
Fig. 2 is the method flow schematic diagram that embodiment of the present invention Relay node switches UE;
Fig. 3 is the method flow schematic diagram that embodiment of the present invention base station notice Relay node switches UE;
Fig. 4 is the method flow schematic diagram of embodiment of the present invention OAM indication base station;
Fig. 5 is the structural representation of embodiment of the present invention Relay node;
Fig. 6 is the structural representation of embodiment of the present invention base station.
Embodiment
Embodiment of the present invention Relay node determination causes the reason that wireless backhaul interrupts to occur; Relay node carries out hand-off process to the subscriber equipment that is connected to self.Because Relay node is after determining the reason appearance that causes wireless backhaul interruption, the subscriber equipment that is connected to self is carried out to hand-off process, thereby avoid, because Relay cannot obtain the problem that wireless backhaul causes the UE communication disruption of access Relay, having improved signal transmission quality and efficiency of transmission.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
As shown in Figure 2, the method that embodiment of the present invention Relay node switches UE comprises the following steps:
Preferably, if Relay node is mobile Relay node, the situation whether reason that judgement causes wireless backhaul link backhaul to interrupt occurs has a lot, describes respectively below:
It is about to enter the region that does not have DeNB to cover the service DeNB notice Relay node of situation one, Relay node.
Concrete, if Relay node receives from the area of coverage that shifts out of serving BS and indicates, determine and cause the reason that wireless backhaul interrupts to occur, wherein shifting out area of coverage indication is that serving BS is less than first threshold at the signal quality value of determining the Donor Serving cell that Relay node receives, and do not have to send after can the community for the service of Relay node.
Situation two, Relay are judged and are about to enter the region that does not have DeNB to cover by reading the information of eating dishes without rice or wine.
For situation two, be divided into again two kinds of modes:
The Donor cell signal mass value of mode one, Relay node determination current service is less than Second Threshold, and can't detect signal quality and be greater than the 3rd threshold value, corresponding PCI in PCI set Zhong community, determine and cause the reason that wireless backhaul interrupts to occur, wherein PCI set comprises PCI that can be corresponding as the community of Donor community.
In force, when the network planning, for doing the reserved specific PCI set in community of Donor; Then, Donor cell determines the PCI of oneself from reserved PCI set.
Concrete, the mutual selected PCI of this community and adjacent cell, if there is the situation of PCI conflict to occur, a side who conflicts in both sides adjusts, from reserved PCI set, a PCI is selected in gravity treatment; Otherwise, just use selected PCI.
In LTE system, one has 504 available PCI, its can be in certain geographic range unique identification Yi Ge community.Wherein, N in 504 available PCI (such as 20) can be kept for to Donor Cell, when Relay carries out signal measurement, can obtain the PCI of surveyed cell, if PCI belongs to the PCI that keeps for Donor Cell, this Cell can be selected as Donor cell, is the service of Relay node; Otherwise, can not be the service of Relay node.
Relay node is less than after Second Threshold at the Donor cell signal mass value of determining current service, detect the community that all signal qualitys are greater than the 3rd threshold value, and judge that PCI corresponding to these communities is whether in PCI set, if there is no corresponding PCI whether in PCI set, determine and cause the reason that wireless backhaul interrupts to occur, if had, report measurement result to current service Donor cell, service Donor cell will trigger relay and switch.
The Donor cell signal mass value of mode two, Relay node determination current service is less than Second Threshold, and can't detect in the system message that signal quality is greater than the 4th threshold value, broadcast and comprise the community of supporting RN indication information, determine and cause the reason that wireless backhaul interrupts to occur.
In force, increase and support RN indication in system message, this indication is broadcasted in the community that can be used as donor cell in system message.
The Donor cell signal mass value of Relay node determination current service is less than after Second Threshold, detect the system message that all signal qualitys are greater than the Cell Broadcast CB of the 4th threshold value, if neither one comprises the community of supporting RN indication information in the system message of broadcast, determine and cause the reason that wireless backhaul interrupts to occur; Otherwise report measurement result is given current service Donor cell, service Donor cell will trigger relay and switch.
Wherein, the signal quality in the embodiment of the present invention refers to that receiving terminal detects the quality of the wireless signal receiving.
Preferably, for mode two for fear of too much fetching adjacent domain system message, Relay can adopt the community of selecting to need with the following method read system message: Relay is after analysis to measure result, select the good non-service cell of signal quality, read its system message, to determine whether it carries, support RN indication (whether can be used as donor cell access).
Concrete, Relay node read signal quality is greater than the system message of other communities except the Donor community of service of the 4th threshold value.
Preferably, if Relay node is fixing Relay node, the situation whether reason that judgement causes wireless backhaul link backhaul to interrupt occurs has a lot, describes respectively below:
The quality of situation one, the wireless backhaul of Relay node determination is less than the 5th threshold value, determines and causes the reason that wireless backhaul interrupts to occur.
Situation two, Relay node determination need to discharge wireless backhaul, determine and cause the reason that wireless backhaul interrupts to occur.
In force, the threshold value in above-mentioned situation can be as required, emulation etc. sets.
Preferably, in step 202, when Relay node carries out hand-off process to the subscriber equipment that is connected to self, can adopt a kind of Target cell of selecting hand-off process in following manner:
The Target cell that switch as subscriber equipment the Donor community of Relay node selection self current service; Or
Relay node is according to the mobility measurements result of self, for subscriber equipment is selected the Target cell of switching;
Relay node is according to the mobility measurements result of user equipment to report, for subscriber equipment is selected the Target cell of switching.
As shown in Figure 3, the method that embodiment of the present invention base station notice Relay node switches UE comprises the following steps:
The signal quality value of the Relay node is here the signal quality value that the Relay node that receives reports, and Relay node provides the signal quality value of wireless backhaul.
In force, base station judges whether to have for the mode of the community of Relay node service a variety of, enumerates several below:
One, base station basis is from OAM(Operations and Maintenance, operation and maintenance) in the Neighboring Cell List of equipment for each base station configuration, indicate adjacent area whether to can be used as the information of Donor community, judge whether can be the community of Relay node service.
Concrete, whether OAM equipment indicates the adjacent area can be as Donor cell in the Neighboring Cell List for each eNB configuration, and such as employing, 1bit indicates corresponding adjacent area whether to can be used as Donor cell.For example " 1 " is passable, and " 0 " is cannot.
Two, base station is according to whether can, as the information of donor base station DeNB, judging whether can be the community of Relay node service from other base stations.
Concrete, while setting up X2 interface between eNB, whether oneself can be used as the information of DeNB alternately.Concrete can be in the message of existing X2 process of establishing, and the Donor that increases 1bit indicates this eNB whether to can be used as DeNBl.For example " 1 " is passable, and " 0 " is cannot.Or
In eNB configuration update message, whether oneself can be used as the information of DeNB alternately.Specifically can be in existing eNB config update request message, the Donor that increases 1bit indicates this eNB whether to can be used as DeNB.For example " 1 " is passable, and " 0 " is cannot.
In force, whether base station sends self can be as the information of donor base station DeNB by X2 interface.
X2 interface is the interface between base station, completes the processing of user data transmission, user data and signaling between base station etc.
For above-mentioned several situations, enumerating several examples below describes.
It is about to enter the region that does not have DeNB to cover the service DeNB notice Relay of example one, Relay.
As shown in Figure 4, the method for embodiment of the present invention OAM indication base station comprises the following steps:
In step 401, the OAM Neighboring Cell List for each eNB configuration, indicate the adjacent area whether can be as Donor cell;
The service DeNB of step 402, Relay node receives the measurement report that Relay sends;
The service DeNB of step 403, Relay node analyzes the measurement report that Relay node reports, if Relay has been less than first threshold in this cell signal quality, further judgement has the Donor cell that can be used as Target cell.As do not have, perform step 404; If any, can trigger Relay and switch.
It may shift out the DeNB area of coverage step 404, service DeNB notice Relay node;
Above-mentioned service DeNB determines that a kind of possible implementation method of the Donor cell that not can be used as Target cell is: according to the measurement report of Relay, service DeNB finds that the current service cell signal quality of Relay has been less than first threshold, and measurement report shows, in the community of signal quality better (such as signal quality is greater than first threshold), not can be used as the community of Donor cell.
The service DeNB of Relay node sends and shifts out after area of coverage indication to Relay, optional, and Relay node returns to ACK(to DeNB and confirms) response.
Step 405: when Relay node is confirmed to be about to enter the region that there is no DeNB covering, Relay node is descended the UE of service to be switched to suitable Target cell.The switching flow adopting can be continued to use existing UE switching flow, repeats no more herein.Specific to choosing of UE switching target small area, Relay node can adopt any one or the multiple combination in following implementation:
The target cell that Relay node selects own current service Donor cell to switch as UE;
Relay node, according to the mobility measurements result of oneself, is UE select target cell, and for example Relay is according to the own measurement result to each community of network, and the good communities of Information Selection signal quality such as the load of each community are as the switching target cell of UE;
The mobility measurements result that Relay node reports according to UE, for UE select target cell(identical with the selection mechanism of existing target cell), for example UE reports the own measurement result to each community of network, Relay node reports the signal of Ge community based on UE, the good communities of Information Selection signal quality such as the load of each community are as the switching target cell of UE.
Whether except indicating the adjacent area can be as Donor cell in the Neighboring Cell List of OAM equipment for each eNB configuration, in step 401, in the time of can also setting up X2 interface between eNB, whether oneself can be used as the information of DeNB alternately; Can also be in eNB configuration update message, whether oneself can be used as the information of DeNB alternately.
Example two, Relay node are judged and are about to enter the region that does not have DeNB to cover by reading the metrical information of eating dishes without rice or wine
Step 1: when the network planning, for doing the reserved specific PCI(Physical Cell ID in community of Donor, physical cell identity) set;
Step 2:Donor cell determines the PCI of oneself from reserved PCI set;
Step 3:Relay node, by the measuring process of eating dishes without rice or wine, is determined the PCI that community can be detected.If when current service Donor cell signal variation, it is good that Relay node can not detect a signal quality, and PCI belongs to the community of above-mentioned reserved set, and Relay node judges that it is about to enter the region that does not have DeNB to cover.
Step 4: identical with the step 405 of example one.
Example three, Relay node are judged and are about to enter the region that does not have DeNB to cover by reading the system message of eating dishes without rice or wine:
Step 1: increase in system message and support RN indication, this indication is broadcasted in the community that can be used as Donor cell in system message;
Corresponding indication in step 2:Relay node read system message, and in conjunction with eating dishes without rice or wine measurement result, judge whether to be about to enter the region that does not have DeNB to cover.If when current service Donor cell signal variation, it is good that Relay node can not detect a signal quality, and the community of broadcast support RN indication, Relay judges that it is about to enter the region that does not have DeNB to cover.
For fear of too much fetching adjacent domain system message, Relay node can be adopted the community of selecting to need with the following method read system message: Relay node is after analysis to measure result, select the good non-service cell of signal quality, read its system message, to determine whether it carries, support RN indication (that is: whether can be used as donor cell accesses).
Step 3: identical with the step 405 of example one.
Based on same inventive concept, Relay node corresponding to the method for UE being switched with embodiment of the present invention Relay node also provide in the embodiment of the present invention, because the principle that this equipment is dealt with problems is similar to the method that embodiment of the present invention Relay node switches UE, therefore the enforcement of this equipment can, referring to the enforcement of method, repeat part and repeat no more.
As shown in Figure 5, the Relay node of the embodiment of the present invention comprises: determination module 50 and hand-off process module 51.
Hand-off process module 51, for carrying out hand-off process to the subscriber equipment that is connected to self.
If Relay node is mobile Relay node; Preferably, determination module 50 receives shifting out after area of coverage indication from serving BS, determine and cause the reason that wireless backhaul interrupts to occur, wherein shifting out area of coverage indication is that serving BS is less than first threshold at the signal quality value of determining the alms giver Donor Serving cell that Relay node receives, and do not have to send after can the community for the service of Relay node; Or the Donor cell signal mass value of definite current service is less than Second Threshold, and can't detect signal quality and be greater than the 3rd threshold value, corresponding physical cell identity PCI behind PCI set Zhong community, determine and cause the reason that wireless backhaul interrupts to occur, wherein PCI set comprises PCI that can be corresponding for the community of Donor community; Or the Donor cell signal mass value of definite current service is less than Second Threshold, and can't detect in the system message that signal quality is greater than the 4th threshold value, broadcast and comprise behind the community of supporting via node RN indication information, determine and cause the reason that wireless backhaul interrupts to occur.
Preferably, if whether judgement causes the reason of wireless backhaul interruption to occur according to system message, determination module 50 read signal quality are greater than the system message of other communities except the Donor community of service of the 4th threshold value.
If Relay node is fixing Relay node; Preferably, determination module 50 determines that the quality of wireless backhaul is less than after the 5th threshold value, determines and causes the reason that wireless backhaul interrupts to occur; Or definite need to release after wireless backhaul, determine and cause the reason that wireless backhaul interrupts to occur.
Preferably, the Target cell that switch as subscriber equipment the Donor community of hand-off process module 51 selections self current service; Or according to the mobility measurements result of self, for subscriber equipment is selected the Target cell of switching; Or according to the mobility measurements result of user equipment to report, for subscriber equipment is selected the Target cell of switching.
Based on same inventive concept, base station corresponding to the method for UE being switched with embodiment of the present invention base station notice Relay node also provide in the embodiment of the present invention, because the principle that this equipment is dealt with problems is similar to the method that embodiment of the present invention base station notice Relay node switches UE, therefore the enforcement of this equipment can, referring to the enforcement of method, repeat part and repeat no more.
As shown in Figure 6, the base station of the embodiment of the present invention comprises: judge module 60 and indicating module 61.
Indicating module 61, for after determining the community that does not have to serve for Relay node, to Relay node, send and shift out area of coverage indication, be used to indicate Relay node and cause the reason that wireless backhaul interrupts to occur, Relay node carries out hand-off process to the subscriber equipment connecting.
Preferably, judge module 60, according to indicating adjacent area whether to can be used as the information of Donor community from OAM equipment in the Neighboring Cell List for each base station configuration, judges whether can be the community of Relay node service; Or according to whether can, as the information of donor base station DeNB, judging whether can be the community of Relay node service from other base stations.
Preferably, whether judge module 60 sends self can be as the information of donor base station DeNB by X2 interface.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (16)
1. a method of switching, is characterized in that, the method comprises:
Relaying Relay node determination causes the reason that wireless backhaul link backhaul interrupts to occur;
Described Relay node carries out hand-off process to the subscriber equipment that is connected to self.
2. the method for claim 1, is characterized in that, described Relay node is mobile Relay node;
Described Relay node determination causes the reason that wireless backhaul interrupts to occur, comprising:
Described Relay node receives shifting out after area of coverage indication from serving BS, determine and cause the reason that wireless backhaul interrupts to occur, it is wherein said that to shift out area of coverage indication be that serving BS is less than first threshold at the signal quality value of determining the alms giver Donor Serving cell that described Relay node receives, and do not have to send after can the community for the service of Relay node; Or
The Donor cell signal mass value of described Relay node determination current service is less than Second Threshold, and can't detect signal quality and be greater than the 3rd threshold value, corresponding physical cell identity PCI behind PCI set Zhong community, determine and cause the reason that wireless backhaul interrupts to occur, wherein said PCI set comprises PCI that can be corresponding for the community of Donor community; Or
The Donor cell signal mass value of described Relay node determination current service is less than Second Threshold, and can't detect in the system message that signal quality is greater than the 4th threshold value, broadcast and comprise behind the community of supporting via node RN indication information, determine and cause the reason that wireless backhaul interrupts to occur.
3. method as claimed in claim 2, is characterized in that, whether the described Relay node reason that judgement causes wireless backhaul to interrupt according to system message occurs;
Described Relay node determination also comprises before causing the reason appearance of wireless backhaul interruption:
Described Relay node read signal quality is greater than the system message of other communities except the Donor community of service of the 4th threshold value.
4. the method for claim 1, is characterized in that, described Relay node is fixing Relay node;
Described Relay node determination causes the reason that wireless backhaul interrupts to occur, comprising:
The quality of the wireless backhaul of described Relay node determination is less than after the 5th threshold value, determines and causes the reason that wireless backhaul interrupts to occur; Or
Described Relay node determination need to discharge after wireless backhaul, determines and causes the reason that wireless backhaul interrupts to occur.
5. the method for claim 1, is characterized in that, described Relay node also comprises before the subscriber equipment that is connected to self is carried out to hand-off process:
The Target cell that switch as subscriber equipment the Donor community of described Relay node selection self current service; Or
Described Relay node is according to the mobility measurements result of self, for subscriber equipment is selected the Target cell of switching; Or
Described Relay node is according to the mobility measurements result of user equipment to report, for subscriber equipment is selected the Target cell of switching.
6. a method of switching, is characterized in that, the method comprises:
For the base station that Relay node is served, determine that the signal quality value of described Relay node is less than after first threshold, judging whether can be as the community of the alms giver Donor community for described Relay node service;
Described base station is after determining the community that does not have to serve for Relay node, to described Relay node, send and shift out area of coverage indication, be used to indicate described Relay node and cause the reason that wireless backhaul interrupts to occur, described Relay node carries out hand-off process to the subscriber equipment connecting.
7. method as claimed in claim 6, is characterized in that, described base station judges whether to be the community of Relay node service, comprising:
Described base station, according to indicating adjacent area whether to can be used as the information of Donor community from operation and maintenance OAM equipment in the Neighboring Cell List for each base station configuration, judges whether can be the community of Relay node service; Or
Whether described base station basis can, as the information of donor base station DeNB, judge whether can be the community of Relay node service from other base stations.
8. method as claimed in claim 7, is characterized in that, the method also comprises:
Whether described base station sends self can be as the information of donor base station DeNB by X2 interface.
9. a relaying Relay node, is characterized in that, this Relay node comprises:
Determination module, causes the reason that wireless backhaul link backhaul interrupts to occur for determining;
Hand-off process module, for carrying out hand-off process to the subscriber equipment that is connected to self.
10. Relay node as claimed in claim 9, is characterized in that, described Relay node is mobile Relay node;
Described determination module specifically for:
Receive shifting out after area of coverage indication from serving BS, determine and cause the reason that wireless backhaul interrupts to occur, it is wherein said that to shift out area of coverage indication be that serving BS is less than first threshold at the signal quality value of determining the alms giver Donor Serving cell that described Relay node receives, and do not have to send after can the community for the service of Relay node; Or the Donor cell signal mass value of definite current service is less than Second Threshold, and can't detect signal quality and be greater than the 3rd threshold value, corresponding physical cell identity PCI behind PCI set Zhong community, determine and cause the reason that wireless backhaul interrupts to occur, wherein said PCI set comprises PCI that can be corresponding for the community of Donor community; Or the Donor cell signal mass value of definite current service is less than Second Threshold, and can't detect in the system message that signal quality is greater than the 4th threshold value, broadcast and comprise behind the community of supporting via node RN indication information, determine and cause the reason that wireless backhaul interrupts to occur.
11. Relay nodes as claimed in claim 10, is characterized in that, described determination module also for:
If whether judgement causes the reason of wireless backhaul interruption to occur according to system message, read signal quality is greater than the system message of other communities except the Donor community of service of the 4th threshold value.
12. Relay nodes as claimed in claim 9, is characterized in that, described Relay node is fixing Relay node;
Described determination module specifically for:
The quality of determining wireless backhaul is less than after the 5th threshold value, determines and causes the reason that wireless backhaul interrupts to occur; Or definite need to release after wireless backhaul, determine and cause the reason that wireless backhaul interrupts to occur.
13. Relay nodes as claimed in claim 9, is characterized in that, described hand-off process module also for:
The Target cell of selecting the Donor community of self current service to switch as subscriber equipment; Or according to the mobility measurements result of self, for subscriber equipment is selected the Target cell of switching; Or according to the mobility measurements result of user equipment to report, for subscriber equipment is selected the Target cell of switching.
14. 1 kinds of base stations, is characterized in that, this base station comprises:
Judge module, is used to relaying Relay node to serve, and determines that the signal quality value of described Relay node is less than after first threshold, and judging whether can be as the community of the alms giver Donor community for described Relay node service;
Indicating module, for after determining the community that does not have to serve for Relay node, to described Relay node, send and shift out area of coverage indication, be used to indicate described Relay node and cause the reason that wireless backhaul interrupts to occur, described Relay node carries out hand-off process to the subscriber equipment connecting.
15. base stations as claimed in claim 14, is characterized in that, described judge module also for:
According to indicating adjacent area whether to can be used as the information of Donor community from operation and maintenance OAM equipment in the Neighboring Cell List for each base station configuration, judge whether can be the community of Relay node service; Or according to whether can, as the information of donor base station DeNB, judging whether can be the community of Relay node service from other base stations.
16. base stations as claimed in claim 15, is characterized in that, described judge module also for:
By X2 interface, send self whether can be as the information of donor base station DeNB.
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| CN103686911B (en) | 2017-08-04 |
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