A kind of transfer control method and deviceTechnical field
The present invention relates to wireless communication technique, espespecially a kind of transfer control method and device.
Background technology
5th generation (5thGeneration, abbreviation 5G) flexibility of the network architecture with innovative and networking, in 5G networksThe baseband processing unit (Building Base band Unit, abbreviation BBU) of middle wireless access net side is separated into centralized placeManage unit (Centralized Unit, abbreviation CU) and distributed processing unit (Distributed Unit, abbreviation DU) twoFunctional entity.Multiple DU are controlled by centralized CU, the base band centralized processing of cloud framework may be implemented and for the remote of userThe distributed offer service in end.In the network architecture of CU-DU separation, the insensitive network function of time delay is placed in CU, and time delay is quickThe network function of sense is placed in DU, is transmitted and is connected by ideal/or non-ideal forward pass (fronthaul) between CU and DUIt connects, realizes multipoint cooperative function, and can support the flexible networking of separation or integrated website.
As shown in Figure 1, in the separation scheme of CU-DU, there are two kinds of sides of scheme 2 (OPTION2) and scheme 3 (OPTION3)Case.Wherein in OPTION2, Packet Data Convergence Protocol (Packet DataConvergence Protocol, abbreviation PDCP)Positioned at CU, radio link layer control protocol (Radio LinkControl, abbreviation RLC) layer and rlc layer are located at DU, CU with lower layerData surface transmission is passed using PDCP PDU (Protocol Data Unit, protocol Data Unit) data packet between DUIt is defeated.In OPTION3, the non-delay sensitive function of RLC includes automatic repeat request (Automatic RepeatRequest, letterClaim ARQ) etc. functions be located at CU, another part of RLC to the functions such as including real-time segmentation of delay sensitive be located at DU, CU and DU itBetween data surface transmission use RLC PDU.Either OPTION2 or OPTION3, in downlink data transmission, CU needs to passThe downlink data for passing user equipment (User Equipment, abbreviation UE) (is PDCP PDU in OPTION2, in OPTION3In be RLC PDU) be sent to DU, UE is sent to by actual DU.Since DU actual transmissions abilities are dispatched by interface-free resourcesWith the influence of the various aspects factor such as channel quality, there are the flow control interface of user plane between CU and DU, DU needs to apply for number to CUAccording to for the transmission in a period of time.But since CU and DU are to detach, in the data transmission procedure of DU, CU simultaneously can not be accurateJudge the DU transmission situations data cached to these.It is likely to DU data transmissions and problem occurs, and CU can not be known in time, causeData delay increases or even packet loss.If whether monitor the transmission link on DU by the link detecting of physical layerFailure, before may reporting link failure on a physical layer, DU just has occurred that data packet continuous transmission mistake and time delay increase.
So under the framework of existing CU-DU separation, CU and the transmission feelings that can not timely know down buffer storage data in DUCondition, to the problem of data delay increase or even packet loss occur.
Invention content
The present invention provides a kind of transfer control method and devices so that CU can know down buffer storage data in DU in timeTransmission quality reduces data transmission delay and packet loss to take corresponding measure.
In order to reach the object of the invention, one embodiment of the invention provides a kind of transfer control method, including：
Centralized processing unit sends the measuring control information of downlink data transmission quality to distributed processing unit；
And receive measurement report or transmission quality instruction extremely that the distributed processing unit reports.
In an alternate embodiment of the present invention, the measuring control information includes at least one of following：
For the measuring control information of the transmission quality of whole business datums of the distributed processing unit；
For the transmission quality of the business datum of the one or more user equipmenies carried on the distributed processing unitMeasuring control information.
In an alternate embodiment of the present invention, the centralized processing unit sends downlink data to distributed processing unitThe measuring control information of transmission quality includes：
The centralized processing unit sends the measurement control during cell is established to the distributed processing unitInformation processed；
Alternatively, the centralized processing unit sends the survey during cell is changed to the distributed processing unitAmount control information；
Alternatively, the centralized processing unit establishes the mistake of service connection in the distributed processing unit and user equipmentCheng Zhong sends the measuring control information to the distributed processing unit；
Alternatively, the centralized processing unit changes the mistake of service bearer in the distributed processing unit and user equipmentCheng Zhong sends the measuring control information to the distributed processing unit.
In an alternate embodiment of the present invention, the measuring control information includes indicating that the distributed processing unit carries outAt least one of following measurement：
Down buffer storage data average delay in the distributed processing unit, the association cached in the distributed processing unitWhether beyond the maximum delay configured in the measuring control information, radio link layer control protocol is average for view data unit dataWhether number of retransmissions, some radio link layer control protocol protocol Data Unit number of retransmissions are more than in the measuring control informationThe maximum retransmission of configuration, hybrid automatic repeat-request average repeat time, some hybrid automatic repeat-request data packet weightPass whether number is more than the maximum retransmission configured in the measuring control information.
In an alternate embodiment of the present invention, the method further includes：The centralized processing unit is according to the measurementAfter report judges the distributed processing unit transmission abnormality or receives transmission quality instruction extremely, if being currentlySingle connection, then the centralized processing unit reports transmission abnormality to high level, and executes follow-up place according to the instruction of the high levelReason.
It is described to include according to the instruction of high level execution subsequent processing in an alternate embodiment of the present invention：
What is reported to the high level when the centralized processing unit is distributed processing unit transmission abnormality and the heightLayer judges to need to discharge the distributed processing unit, then the centralized processing unit is initiated to the distributed processing unitDelete the process of the distributed processing unit；
When the centralized processing unit reported to the high level be user equipment service transmission quality it is abnormal, then rootAccording to the instruction of the high level by the business migration of the user equipment to other distributed processing units, alternatively, discharging the useThe business of family equipment.
In an alternate embodiment of the present invention, the method further includes：The centralized processing unit is according to the measurementAfter report judges the distributed processing unit transmission abnormality or receives transmission quality instruction extremely, if current be to connect moreIt connects, then the centralized processing unit is distributed to another by the abnormal traffic data dispatch on the distributed processing unitIt is transmitted on processing unit.
In an alternate embodiment of the present invention, the centralized processing unit is by the exception on the distributed processing unitIt is transmitted on service data scheduling to another distributed processing unit and includes：
The centralized processing unit sends protocol Data Unit status poll packet to user equipment, it is desirable that the user setsThe standby reception condition for reporting downlink data packet；
After the centralized processing unit receives the protocol Data Unit state report of the user equipment to report, according to instituteIt states protocol Data Unit state report and determines the business datum transmitted not successfully；
The centralized processing unit is by the service data scheduling transmitted not successfully to another distributed treatment listIt is transmitted in member.
One embodiment of the invention provides a kind of transmission control unit, including：
Control configuration module is measured, is set as, the measurement control of downlink data transmission quality is sent to distributed processing unitInformation processed；
Measurement report processing module, is set as, and receives measurement report or transmission that the distributed processing unit reportsAbnormal quality indicates.
In an alternate embodiment of the present invention, the measuring control information includes at least one of following：
For the measuring control information of the transmission quality of whole business datums of the distributed processing unit；
For the transmission quality of the business datum of the one or more user equipmenies carried on the distributed processing unitMeasuring control information.
In an alternate embodiment of the present invention, the measurement controls configuration module and sends lower line number to distributed processing unitInclude according to the measuring control information of transmission quality：
The measurement controls configuration module and sends the measurement to the distributed processing unit during cell is establishedControl information；
Alternatively, the measurement controls configuration module during cell is changed to described in distributed processing unit transmissionMeasuring control information；
Alternatively, the measurement control configuration module establishes service connection in the distributed processing unit and user equipmentIn the process, the measuring control information is sent to the distributed processing unit；
Alternatively, the control configuration module that measures changes service bearer in the distributed processing unit and user equipmentIn the process, the measuring control information is sent to the distributed processing unit.
In an alternate embodiment of the present invention, the measuring control information includes indicating that the distributed processing unit carries outAt least one of following measurement：
Down buffer storage data average delay in the distributed processing unit, the association cached in the distributed processing unitWhether beyond the maximum delay configured in the measuring control information, radio link layer control protocol is average for view data unit dataWhether number of retransmissions, some radio link layer control protocol protocol Data Unit number of retransmissions are more than in the measuring control informationThe maximum retransmission of configuration, hybrid automatic repeat-request average repeat time, some hybrid automatic repeat-request data packet weightPass whether number is more than the maximum retransmission configured in the measuring control information.
In an alternate embodiment of the present invention, the measurement report processing module is also configured to, according to the measurement reportAfter judging the distributed processing unit transmission abnormality or receiving transmission quality instruction extremely, if being currently Dan LianIt connects, then reports transmission abnormality to high level, and subsequent processing is executed according to the instruction of the high level.
In an alternate embodiment of the present invention, the measurement report processing module executes follow-up according to the instruction of the high levelProcessing includes：
When what is reported to the high level is described in distributed processing unit transmission abnormality and the high-rise judgement needs releaseDistributed processing unit then initiates the process for deleting the distributed processing unit to the distributed processing unit；
When reported to the high level be user equipment service transmission quality it is abnormal, then according to the instruction of high level generalThe business migration of the user equipment is to other distributed processing units, alternatively, discharging the business of the user equipment.
In an alternate embodiment of the present invention, the measurement report processing module is also configured to, according to the measurement reportAfter judging the distributed processing unit transmission abnormality or receiving transmission quality instruction extremely, if being currently multi-connection,It will then be transmitted on the abnormal traffic data dispatch to another distributed processing unit on the distributed processing unit.
In an alternate embodiment of the present invention, the measurement report processing module will be different on the distributed processing unitIt is transmitted on normal service data scheduling to another distributed processing unit and includes：
Protocol Data Unit status poll packet is sent to user equipment, it is desirable that the user equipment to report downlink data packetReception condition；The protocol Data Unit state report for receiving the user equipment to report, according to the protocol Data Unit stateReport determines the business datum transmitted not successfully；By the service data scheduling transmitted not successfully to another distributed treatmentIt is transmitted on unit.
One embodiment of the invention provides a kind of transmission control unit, including memory and processor, the memory storageThere is program, described program executes following operation when reading execution by the processor：
The measuring control information of downlink data transmission quality is sent to distributed processing unit；
And receive measurement report or transmission quality instruction extremely that the distributed processing unit reports.
In an alternate embodiment of the present invention, the measuring control information includes at least one of following：
For the measuring control information of the transmission quality of whole business datums of the distributed processing unit；
For the transmission quality of the business datum of the one or more user equipmenies carried on the distributed processing unitMeasuring control information.
In an alternate embodiment of the present invention, the measurement that downlink data transmission quality is sent to distributed processing unitControlling information includes：
During cell is established the measuring control information is sent to the distributed processing unit；
Alternatively, sending the measuring control information to the distributed processing unit during cell is changed；
Alternatively, during the distributed processing unit and user equipment establish service connection, to the distributionProcessing unit sends the measuring control information；
Alternatively, during the distributed processing unit and user equipment change service bearer, to the distributionProcessing unit sends the measuring control information.
In an alternate embodiment of the present invention, the measuring control information includes indicating that the distributed processing unit carries outAt least one of following measurement：
Down buffer storage data average delay in the distributed processing unit, the association cached in the distributed processing unitWhether beyond the maximum delay configured in the measuring control information, radio link layer control protocol is average for view data unit dataWhether number of retransmissions, some radio link layer control protocol protocol Data Unit number of retransmissions are more than in the measuring control informationThe maximum retransmission of configuration, hybrid automatic repeat-request average repeat time, some hybrid automatic repeat-request data packet weightPass whether number is more than the maximum retransmission configured in the measuring control information.
In an alternate embodiment of the present invention, described program also executes following behaviour when reading execution by the processorMake：Judge the distributed processing unit transmission abnormality according to the measurement report or receive the transmission quality to refer to extremelyAfter showing, if being currently single connection, transmission abnormality is reported to high level, and subsequent processing is executed according to the instruction of the high level.
It is described to include according to the instruction of high level execution subsequent processing in an alternate embodiment of the present invention：
When what is reported to the high level is described in distributed processing unit transmission abnormality and the high-rise judgement needs releaseDistributed processing unit then initiates the process for deleting the distributed processing unit to the distributed processing unit；
When reported to the high level be user equipment service transmission quality it is abnormal, then according to the instruction of high level generalThe business migration of the user equipment is to other distributed processing units, alternatively, discharging the business of the user equipment.
In an alternate embodiment of the present invention, described program also executes following behaviour when reading execution by the processorMake：Judge the distributed processing unit transmission abnormality according to the measurement report or receives transmission quality instruction extremelyAfterwards, if being currently multi-connection, by abnormal traffic data dispatch on the distributed processing unit at another distributionIt is transmitted on reason unit.
In an alternate embodiment of the present invention, it is described by abnormal traffic data dispatch on the distributed processing unit to anotherIt is transmitted on one distributed processing unit and includes：
Protocol Data Unit status poll packet is sent to user equipment, it is desirable that the user equipment to report downlink data packetReception condition；The protocol Data Unit state report for receiving the user equipment to report, according to the protocol Data Unit stateReport determines the business datum transmitted not successfully；By the service data scheduling transmitted not successfully to another distributed treatmentIt is transmitted on unit.
One embodiment of the invention provides a kind of transfer control method, including：
Distributed processing unit receives the measuring control information for the downlink data transmission quality that centralized processing unit is sent；
The distributed processing unit is measured according to the measuring control information, on the centralized processing unitMeasurement report or transmission quality is reported to indicate extremely.
In an alternate embodiment of the present invention, the distributed processing unit is measured according to the measuring control informationIncluding at least following one：
Monitor the transmission quality of whole business datums of the distributed processing unit；
Monitor the transmission quality of the business datum of one or more user equipmenies of the distributed processing unit carrying.
In an alternate embodiment of the present invention, it is described to the centralized processing unit reporting measurement reports or transmission matterThe abnormal instruction of amount includes at least following one：
Periodically indicated extremely to the centralized processing unit reporting measurement reports or transmission quality；
Event indicates extremely to the centralized processing unit reporting measurement reports or transmission quality.
In an alternate embodiment of the present invention, the measurement includes at least one：
Down buffer storage data average delay in the distributed processing unit, the association cached in the distributed processing unitWhether beyond the maximum delay configured in the measuring control information, radio link layer control protocol is average for view data unit dataWhether number of retransmissions, some radio link layer control protocol protocol Data Unit number of retransmissions are more than in the measuring control informationThe maximum retransmission of configuration, hybrid automatic repeat-request average repeat time, some hybrid automatic repeat-request data packet weightPass whether number is more than the maximum retransmission configured in the measuring control information.
One embodiment of the invention provides a kind of transmission control unit, including：
Measuring configuration module, is set as, and receives the measurement control for the downlink data transmission quality that centralized processing unit is sentInformation processed；
Measurement module is set as, and is measured according to the measuring control information, and measurement report or transmission quality are generatedAbnormal instruction；
Reporting module is set as, and the measurement report or the transmission quality are reported to the centralized processing unitAbnormal instruction.
In an alternate embodiment of the present invention, described measure includes at least measuring following one：
Monitor the transmission quality of whole business datums of distributed processing unit；
Monitor the transmission quality of the business datum of one or more user equipmenies of the distributed processing unit carrying.
In an alternate embodiment of the present invention, the reporting module reports the measurement to report to the centralized processing unitIt accuses or transmission quality instruction extremely includes at least following one：
Periodically indicated extremely to the centralized processing unit reporting measurement reports or transmission quality；
Event indicates extremely to the centralized processing unit reporting measurement reports or transmission quality.
In an alternate embodiment of the present invention, the measurement includes at least one：
Down buffer storage data average delay in distributed processing unit, the protocol data list cached in distributed processing unitWhether beyond the maximum delay configured in the measuring control information, radio link layer control protocol averagely retransmits secondary metadataWhether number, some radio link layer control protocol protocol Data Unit number of retransmissions are more than to be configured in the measuring control informationMaximum retransmission, hybrid automatic repeat-request average repeat time, some hybrid automatic repeat-request data packet retransmission numberWhether it is more than the maximum retransmission configured in the measuring control information.
One embodiment of the invention provides a kind of transmission control unit, including memory and processor, the memory storageThere is program, described program executes following operation when reading execution by the processor：
Receive the measuring control information for the downlink data transmission quality that centralized processing unit is sent；
It is measured according to the measuring control information, to the centralized processing unit reporting measurement reports or transmissionAbnormal quality indicates.
In an alternate embodiment of the present invention, it is described according to the measuring control information measure including at least it is following itOne：
Monitor the transmission quality of whole business datums of the distributed processing unit；
Monitor the transmission quality of the business datum of one or more user equipmenies of the distributed processing unit carrying.
In an alternate embodiment of the present invention, it is described to the centralized processing unit reporting measurement reports or transmission matterThe abnormal instruction of amount includes at least following one：
Periodically indicated extremely to the centralized processing unit reporting measurement reports or transmission quality；
Event indicates extremely to the centralized processing unit reporting measurement reports or transmission quality.
In an alternate embodiment of the present invention, the measurement includes instruction following one：
Down buffer storage data average delay in distributed processing unit, the protocol data list cached in distributed processing unitWhether beyond the maximum delay configured in the measuring control information, radio link layer control protocol averagely retransmits secondary metadataWhether number, some radio link layer control protocol protocol Data Unit number of retransmissions are more than to be configured in the measuring control informationMaximum retransmission, hybrid automatic repeat-request average repeat time, some hybrid automatic repeat-request data packet retransmission numberWhether it is more than the maximum retransmission configured in the measuring control information.
Compared with prior art, in section Example of the present invention, centralized processing unit is sent to distributed processing unitThe measuring control information of downlink data transmission quality；Receive the measurement report or transmission matter that the distributed processing unit reportsThe abnormal instruction of amount.Using method of the present invention, CU may be implemented, actively the measurement of DU downlink data transmission quality is carried outConfiguration, DU can report corresponding measurement report or DU transmission qualities to indicate extremely accordingly according to the measuring configuration of CU, orPerson's DU transmission qualities restore instruction, and the business data transmission quality situation of this node is timely notified CU.CU can be according to surveyIt measures and reports that either transmission quality instruction extremely is taken to high level report exception or in the case of dual link or multi-connection,The means such as transmission on data dispatch to the higher link of other transmission qualities are improved into user data transmission quality in time.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specificationIt obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages can be by specification, rightsSpecifically noted structure is realized and is obtained in claim and attached drawing.
Description of the drawings
Attached drawing is used for providing further understanding technical solution of the present invention, and a part for constitution instruction, with thisThe embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is OPTION2OPTION3CU-DU high levels separation scheme data surface interface diagram in the related technology；
Fig. 2 is CU-DU measuring and controllings schematic diagram provided by Embodiment 2 of the present invention；
Fig. 3 is that CU is initiated to the measurement control flow of DU during the cell that the embodiment of the present invention three provides increases a DUFigure；
Fig. 4 is that the measurement that CU is initiated to DU during the cell that the embodiment of the present invention four provides is changed controls modification processFigure；
Fig. 5 is measurement of the initiations of CU during UE and new DU establish service bearer of the offer of the embodiment of the present invention five to DUControl flow chart；
Fig. 6 is that the measurement that CU during UE and new DU business modifications that the embodiment of the present invention six provides is initiated to DU controlsFlow chart；
Fig. 7 is that the CU that the embodiment of the present invention seven provides reports downlink data transmission quality measurement reports or transmission according to DUAbnormal quality indicates process chart；
Fig. 8 is that CU reports downlink data transmission quality measurement reports according to DU under the multi-connection that the embodiment of the present invention eight providesOr transmission quality indicates the flow chart that will be transmitted on abnormal traffic data dispatch to other DU extremely.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present inventionEmbodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the applicationFeature mutually can arbitrarily combine.
Step shown in the flowchart of the accompanying drawings can be in the computer system of such as a group of computer-executable instructionsIt executes.Also, although logical order is shown in flow charts, and it in some cases, can be with suitable different from hereinSequence executes shown or described step.
Embodiment one
The present embodiment provides a kind of transfer control methods, including：
CU sends the measuring control information of downlink data transmission quality to DU；
And receive measurement report or transmission quality instruction extremely that the DU is reported.
In the alternative embodiment of the present invention, CU can be by the control plane interface between CU and DU, under DU configurationsThe measuring control information of row data transmission quality.The measuring control information can be DU nodes rank or user apparatus service gradeNot.DU can be controlled according to measuring, and support the measurement of two ranks, or support the measurement of one of rank.
Wherein, the DU nodes rank refers to：For the measurement control of the downlink transfer quality of the DU nodes, show DUAs a Node Concepts, need to measure whole business data transmission qualities as a whole on the DU；
The user apparatus service rank refers to：For the one of the one or more user equipmenies carried on the DU nodesThe downlink data transmission quality of a or multiple business measures.It can be individually to the transmission matter of the business datum with equipmentAmount measures.
In the alternative embodiment of the present invention, the measuring control information that CU sends downlink data transmission quality to DU can be withOne of in the following way：
During cell is established, for the DU under some CU controls in the cell, user plane number of the configuration pin to the DUAccording to the measuring control information of downlink transfer quality；Wherein, the measurement control for DU transmission qualities during cell is established canTo be to be directed to DU node ranks；
Alternatively, during cell is changed, for the DU under some CU controls in the cell, user of the modification for the DUThe measuring control information of face data downlink transfer quality；Wherein, the measurement control for DU transmission qualities during cell modificationSystem can be directed to DU node ranks；
Alternatively, CU can also be when adding a DU (when DU and UE establishes service connection), in DU for UE service connectionsMeasurement of the upper configuration pin to the user equipment in the downlink data transmission quality of the DU business carried controls；Wherein, Yong HusheThe measurement control for DU transmission qualities that standby and DU is established in connection procedure can be directed to user apparatus service rank；
Alternatively, among DU and UE business carry out processes (for example, during DU and UE changes service bearer), in DUMeasurement control of the upper modification for the downlink data transmission quality of the business of user carrying.Wherein, user equipment and DU businessThe measurement control modification for DU transmission qualities during progress can be directed to user apparatus service rank.
The measurement control content that CU is initiated includes at least following one：
Down buffer storage data average delay in DU, which shows that DU receives some PDU data of CU, and is buffered in DUTransmission buffering area in be sent, the average delay sent to the PDU by DU.The measurement item is supported periodically to report configurationOr event mode reports configuration, it can also be for customer service rank which, which is for DU node ranks,.
The PDU data cached in DU measures the maximum delay configured in control beyond CU, which shows that DU receives CUSome PDU data, and be buffered in be sent in the transmission buffering area of DU, but control configured maximum delay until measuringAfter time-out, DU does not also send the PDU successfully.The measurement item only supports event mode to report, when the event generation after can onReport.It can also be for customer service rank that the measurement item, which is for DU node ranks,.
RLC average repeat times.In CU-DU separation, in option2, rlc layer ARQ is located at the sides DU, in option2In can configure the measurement item.The measurement item shows average repeat time of the DU rlc layers when sending RLC data packets.The measurementItem support periodically reports configuration or event mode to report configuration, and it can also be for use which, which is for DU node ranks,Family business-level.
Some RLC PDU number of retransmissions is more than the maximum retransmission of CU configurations, and the measurement can be configured in option2.The measurement item shows DU rlc layers in transmission data packet, the maximum for the CU configurations that some RLC data packet retransmission number is more thanNumber of retransmissions.The RLC maximum retransmissions of usual CU configurations are less than the maximum retransmission of DU rlc protocol layers configuration.The measurementItem only supports event mode to report configuration, can be reported after event generation.The measurement item also may be used for DU node ranksTo be to be directed to user apparatus service rank.
Hybrid automatic repeat-request (Hybrid Automatic Repeat reQuest, abbreviation HARQ) averagely retransmits secondaryNumber, the measurement item show average repeat time of the HARQ layers of DU in transmission data packet.The measurement item is supported periodically to reportConfiguration or event mode report configuration, and it can also be for customer service rank which, which is for DU node ranks,.
Some HARQ data packet number of retransmissions is more than the maximum retransmission configured during the measurement of CU configurations controls.The measurementItem shows HARQ layers of DU in transmission data packet, the maximum re-transmission time for the CU configurations that some HARQ data packet number of retransmissions is more thanNumber.The HARQ maximum retransmissions of usual CU configurations are less than the maximum retransmission of DU HARQ protocol layers configuration.The measurement itemOnly event mode is supported to report configuration, it can also be for customer service rank which, which is for DU node ranks,.
In the alternative embodiment of the present invention, the method further includes：The CU judges institute according to the measurement reportAfter stating DU transmission abnormalities or receiving transmission quality instruction extremely, if being currently multi-connection, the CU is by the distributionIt is transmitted on abnormal traffic data dispatch to another distributed processing unit on formula processing unit.It is abnormal if it is entire DU,It can will then be transmitted on whole service data schedulings to another DU on DU, if it is the service exception of some UE on DU,The abnormal traffic of UE can be then dispatched on other DU and be transmitted.A kind of dispatching method includes：
The CU sends PDU status poll packets to UE, it is desirable that the UE reports the reception condition of downlink data packet；
After the UE receives the PDU state reports of the user equipment to report, according to the PDU state reports determine not atThe business datum of work(transmission；
The CU will be transmitted on the service data scheduling transmitted not successfully to another DU.
It should be noted that when by being transmitted on the whole service data schedulings to another DU to fail on DU, it is also desirable toEach UE on the DU (failure DU) sends PDU status poll packets, and failed transmission is determined according to the PDU state reports that UE is returnedBusiness datum.
In the alternative embodiment of the present invention, further include：The CU judges that the DU is transmitted according to the measurement reportException or after receiving transmission quality instruction extremely, if being currently single connection, the CU reports transmission to high levelIt is abnormal, and subsequent processing is executed according to the instruction of the high level.In one embodiment, described to be executed according to the instruction of the high levelSubsequent processing includes：
When the CU reported to the high level be DU transmission abnormalities and it is described it is high-rise judge to need to discharge the DU, then instituteCU is stated to initiate to delete the process of the DU to the DU；
When the CU reported to the high level be UE service transmission quality it is abnormal, then according to the instruction of high level generalThe business migration of the UE is to other DU, alternatively, discharging the business of the UE.
Processing in the case of illustratively various below.
If DU directly reports transmission quality to indicate extremely, if it is node-node transmission exception, then：
In the case of single connection, CU can report DU transmission abnormalities to high level, be indicated to execute subsequent operation according to high level；
CU can be directly by the service data scheduling for the whole user equipmenies on DU that fail to separately in the case of multi-connectionIt is transmitted on an outer DU；
If what DU was reported is the transmission quality instruction extremely of the business of some UE,：
In the case where the UE is in single connection, CU can report some UE business transmission abnormality of DU to high level, according to heightLayer instruction carries out subsequent processing；
In the state that the UE is in multi-connection, CU can by the UE abnormal traffics data dispatch to another DU (i.e.Another DU of the UE connections) on transmit.
If what DU was reported is measurement report, CU can be judged according to measurement report DU whether transmission abnormality.If CU sentencesDisconnected DU transmission abnormalities, then：
In the case of single connection, CU to can high level report, according to high level indicate execute subsequent operation；
In the case of multi-connection, the whole user service datas to fail on DU directly can be dispatched to another by CUIt is transmitted on DU；
If it is report be some UE service transmission quality it is abnormal, then：
In the case of single connection, CU can report some UE business transmission abnormality of DU to high level, be held according to high level instructionRow subsequent operation；
In the case of multi-connection, CU can will be transmitted on the abnormal traffic data dispatch to another DU of the UE.
In another embodiment, a kind of transfer control method is provided, including：
DU receives the measuring control information for the downlink data transmission quality that CU is sent；
The DU is measured according to the measuring control information, different to the CU reporting measurement reports or transmission qualityOften instruction.
The present invention an alternative embodiment in, the DU according to the measuring control information measure including at least withIt is one of lower：
Monitor the transmission quality of whole business datums of the DU；
Monitor the transmission quality of the business datum of one or more user equipmenies of the DU carryings.
Specifically, DU is after receiving the measuring control information about DU transmission qualities of CU, in the data transmission of DUIn the process, the other data transmission quality of this DU node levels or the UE of this DU carryings are monitored according to the content in measuring control informationThe data transmission quality of business-level, and measurement report or transmission quality are fed back to CU according to monitoring result and indicated extremely, thisKind of feedback is different according to the configuration item for measuring control, can be that either event is periodically reported to report.
It is described to the centralized processing unit reporting measurement reports or transmission in the alternative embodiment of the present inventionAbnormal quality instruction includes at least following one：
Periodically indicated extremely to the centralized processing unit reporting measurement reports or transmission quality；
Event indicates extremely to the centralized processing unit reporting measurement reports or transmission quality.
DU can judge that DU is transmitted to CU periodicity or event reporting measurement reports according to measuring configuration by CUWhether quality is abnormal.DU can according to measure control configuration, a certain measurement event generation after, such as some measurement item be more than orPerson is less than after some thresholding, directly DU node-node transmission abnormal qualities can be reported to indicate to CU, or some UE carriedSome business data transmission quality indicates extremely.If DU once reported abnormal instruction, DU that can pass through a certain measurementEvent generation judged that transmission quality was recovered later, if some measurement item is more than or less than after some thresholding, directly toCU reports DU node-node transmissions to restore instruction or the data transmission recovery instruction of some UE business.In addition, if in physical layerLink failure instruction, DU is reported physical layer link can unsuccessfully to be indicated to be reported to CU.
In the alternative embodiment of the present invention, the measurement includes at least one：
Down buffer storage data average delay in the distributed processing unit caches in the distributed processing unitWhether PDU data is beyond the maximum delay configured in the measuring control information, RLC average repeat times, some RLC PDU weightPass whether number is more than the maximum retransmission configured in the measuring control information, hybrid automatic repeat-request averagely retransmits secondaryWhether number, some hybrid automatic repeat-request data packet retransmission number are more than the maximum re-transmission configured in the measuring control informationNumber.
Embodiment two
As shown in Fig. 2, the present embodiment provides a kind of transmission control unit 10, can be deployed on CU, including：
Control configuration module 101 is measured, is set as, the measuring control information of downlink data transmission quality is sent to DU；
Measurement report processing module 102, is set as, and receives measurement report or transmission quality instruction extremely that DU is reported.
In the alternative embodiment of the present invention, the measurement report processing module 102 may also be configured to,
After judging the DU transmission abnormalities according to the measurement report or receive transmission quality instruction extremely, such asFruit is currently single connection, then reports transmission abnormality to high level, and execute subsequent processing according to the instruction of the high level.
Subsequent processing includes：
When reported to the high level be DU transmission abnormalities and it is described it is high-rise judge to need to discharge the DU nodes, then to instituteDU is stated to initiate to delete the process of the DU nodes；
When reported to the high level be UE service transmission quality it is abnormal, then according to the instruction of the high level by the UEBusiness migration to other DU, alternatively, discharging the business of the UE.
In the alternative embodiment of the present invention, the DU transmission abnormalities are judged according to the measurement report or are receivedAfter transmission quality instruction extremely, if being currently multi-connection, whole user service datas on the DU are dispatched to anotherIt is transmitted on a DU, alternatively, by being transmitted on abnormal traffic data dispatch to another DU on the DU.
The present embodiment also provides a kind of transmission control unit 20, including：
Measuring configuration module 201, is set as, and receives the measuring control information that CU is issued；
Measurement module 202, is set as, and according to the measuring control information, is measured accordingly, generate measurement report orPerson's transmission quality instruction (can be that transmission quality instruction and transmission quality extremely normally indicate)；Wherein it is possible to first according toMeasuring control information generates measuring configuration, is measured further according to the measuring configuration；
Reporting module 203, is set as, and reports the measurement report or transmission quality to indicate extremely to the CU.
How each module of the device specifically carries out processing reference method embodiment, and details are not described herein again.
Embodiment three
The present embodiment provides during cell is established, CU initiates DU to measure control flow.Wherein, cell establishes processIn for DU transmission qualities measurement control be directed to DU node ranks.
As shown in figure 3, including：
Step 301, CU initiates cell foundation request (CELL_SETUP_REQUEST) to DU and disappears during cell is establishedIt ceases, DU ADDITION (increasing DU) information is carried in message, notice DU needs increase to the DU in this cell, and describedThe measuring control information measured for DU downlink datas is carried in CELL_SETUP_REQUEST message.
Step 302, after DU receives the CELL_SETUP_REQUEST message, measuring control information therein is parsed,The measuring configuration transmitted for the downlink user face data of this DU nodes is established, sending cell foundation to CU completes (CELL_SETUP_COMPLETE) message, and the cell establish complete message in carry measure control establish whether success status information.
Example IV
The present embodiment provides one kind during cell is changed, and CU initiates DU to measure the flow of control modification.Wherein, smallThe measurement control for DU transmission qualities during area's modification is to be directed to DU node ranks.
As shown in figure 4, provided in this embodiment during cell is changed, CU initiates DU to measure the flow of control modificationIncluding：
Step 401, CU initiates cell modification request (CELL_MODIFICATION_ during cell is changed to DUREQUEST) message informing DU needs to change DU configurations, and carries in cell modification request message and surveyed for DU downlink datasThe measuring control information of amount.
Step 2：After DU receives the CELL_MODIFICATION_REQUEST message, measurement control therein is parsedInformation, the measuring configuration that modification is transmitted for the downlink user face data of this DU nodes return to cell modification to CU and complete(CELL_MODIFICATION_COMPLETE) message, and cell modification completes to carry whether measure control modification in messageSuccess status information.
Embodiment five
The present embodiment provides one kind during UE and new DU establishes service bearer, is related to CU to the UE institutes on DUBuild the measurement control process of the transmission quality of business.The measurement control that UE and new DU is established during service bearer is to be directed toUE business-levels.
As shown in figure 5, UE establishes service bearer with DU (DU referred to as original DU, Fig. 5 are not shown), needs and new DU (claimsFor Target DU, i.e. target DU) service bearer is established, including：
Step 501, during target DU and UE establish service connection, CU initiates DU to target DU and increases request (DU_ CUADDITION_REQUEST) message informing target DU establishes the service bearer of UE, in the DU increases request message, carries needleThe measuring control information that the downlink data of the UE business of target DU carryings is measured.
Step 502：After the target DU receives the DU_ADDITION_REQUEST message, measurement therein is parsedInformation is controlled, the measuring configuration of the downlink user face data transmission of the UE specified services is established, returning to DU to CU increases confirmation(DU_ADDITION_ACKNOWLEDGE) message, and the DU increases carrying measurement in confirmation message and controls whether to be successfully establishedStatus information.
Step 503, CU issues RRC re-matchings (RRC_Connection_Reconfiguration) to UE in the former paths DU and disappearsBreath；
Step 504, the path of UE to target DU are ready to complete；
Step 505, UE returns to RRC to CU in the newly-established paths DU or the original paths DU and re-matches completion (RRC_Connection_Reconfiguration) message.
Embodiment six
The present embodiment provides one kind during UE and DU changes service bearer, is related to CU and changes business to the UE on DUTransmission quality measurement control process.Measurement control during the modification of UE and DU service bearers is to be directed to UE business-levels.
As shown in fig. 6, including：
Step 601, for CU in DU and UE service bearers change connection procedure, CU initiates DU modification requests (DU_ to the DUMODIFICATION_REQUEST) message informing DU changes the service bearer of UE, within the message, carries being somebody's turn to do for DU carryingsThe measuring control information that the downlink data of UE business measures.
Step 602, after the DU receives the DU_MODIFICATION_REQUEST message, measurement therein is parsedInformation is controlled, the measuring configuration of the downlink user face data transmission of the UE specified services is set according to the measuring control information, toThe CU returns to DU modifications and confirms (DU_MODIFICATION_ACKNOWLEDGE) message, is taken in the DU modifications confirmation messageThe information for controlling whether to be successfully established with measurement.
Step 603, CU issues RRC re-matchings (RRC_Connection_Reconfiguration) to UE in the former paths DU and disappearsBreath；
Step 604, UE to DU business reconfigures preparation；
Step 605, UE sends RRC and re-matches completion message to CU.
Embodiment seven
It is different according to the DU downlink data transmission quality measurement reports reported or transmission quality that the present embodiment provides a kind of CUThe method that often instruction carries out subsequent processing.
As shown in fig. 7, comprises：
Step 701：The downlink data measuring control information that DU is configured according to CU measures；
Wherein, the measurement includes that measurement is at least one of following：
Down buffer storage data average delay in DU, the PDU data cached in DU measure the maximum configured in control beyond CUTime delay, RLC average repeat times, some RLC PDU number of retransmissions are more than the maximum re-transmission configured during the measurement of CU configurations controlsNumber, HARQ average repeat times, some HARQ data packet number of retransmissions are more than the maximum configured during the measurement of CU configurations controlsNumber of retransmissions.
Step 702, DU reporting measurement reports report transmission quality to be indicated to extremely to CU or DU according to measurement resultCU。
Step 703, CU is indicated extremely according to the DU measurement reports reported or transmission quality, decides whether that notice is high-rise(such as rrc layer) DU transmission datas are abnormal.
Step 704, CU is handled according to high level instruction, including：
A:If measurement report for DU ranks, and it is high-rise judge to need to discharge entire DU nodes, then from CU to DUInitiate the process of the entire DU nodes of deletion；
B:If measurement report is for UE business-levels, and high-rise judgement needs the UE business migrations arriving otherDU then initiates switching flow from CU to DU；
C:If measurement report is for UE business-levels, and high-rise judgement needs to release the UE business from the DUIt puts, then initiating business to DU from CU discharges flow；
D：If measurement report is for UE business-levels, and currently in multi-connection, CU can be initiated will be differentIt is transmitted on normal service data scheduling to other DU.
Embodiment eight
The present embodiment provides CU under a kind of multi-connection to report the measurement report or biography of downlink data transmission quality according to DUTransmission quality indicates the implementation method that will be transmitted on abnormal traffic data dispatch to other DU extremely.Unlike embodiment six,In the present embodiment, increasing will be on the data dispatch to other DU that fail transmission success in DU in the case of multi-connection to CUThe process of transmission.
As shown in figure 8, including：
Step 801, multi-connection service bearer is established between UE and DU1, DU2.
Step 802, the downlink data that DU1 is configured according to CU measures control and measures.
Wherein, the measurement includes that measurement is at least one of following：
Down buffer storage data average delay in DU1, the PDU data cached in DU1 are measured in control beyond CU and are configured mostLong time delay, RLC average repeat times, some RLC PDU number of retransmissions are more than the maximum weight configured during the measurement of CU configurations controlsNumber, HARQ average repeat times are passed, some HARQ data packet number of retransmissions is more than to be configured most during the measurement of CU configurations controlsBig number of retransmissions.
Step 803, DU1 reporting measurement reports report transmission quality to be indicated to extremely to CU or DU1 according to measurement resultCU。
Step 804, the CU is indicated extremely according to measurement report or transmission quality, decides whether to need DU1 dataIt is dispatched on other DU and transmits.
Step 805, the CU determines that the service data scheduling by abnormal DU (being DU1 in the present embodiment) is uploaded to other DUWhen defeated, the CU to UE initiate a PDU POLL data packet, it is desirable that UE report downlink data packet reception condition (ACK,NACK)。
Wherein, the PDU POLL data packets described in CU-DU option2 frameworks are a PDCP status poll packets,The data packets of PDU POLL described in framework are a RLC poll packets in OPTION3.
Step 806, the UE reports PDU state reports (PDU_Status_Report), the PDU state reports to CU(ACK, NACK) information is carried, which data Successful transmissions of CU, which data transmission fails can be notified.
Wherein, the PDU state reports described in CU-DU option2 frameworks are a PDCP state reports, in OPTION3PDU state reports described in middle framework are a RLC state reports.
Step 807, the PDU state reports that the CU is reported according to UE will fail on source DU (being DU1 in the present embodiment)The data of work(transmission are initiated to retransmit on another DU (being DU2 in the present embodiment) again, and will newly send out data dispatch to anotherOn a DU (being DU2 in the present embodiment).
Embodiment nine
The present embodiment provides a kind of transmission control unit, including memory and processor, the memory has program stored therein,Described program executes following operation when reading execution by the processor：
The measuring control information of downlink data transmission quality is sent to distributed processing unit；
And receive measurement report or transmission quality instruction extremely that the distributed processing unit reports.
Technical detail reference implementation example one, details are not described herein again.
In another embodiment, a kind of centralized processing unit including above-mentioned transmission control unit is also provided.
Embodiment ten
The present embodiment provides a kind of transmission control unit, including memory and processor, the memory has program stored therein,Described program executes following operation when reading execution by the processor：
Receive the measuring control information for the downlink data transmission quality that centralized processing unit is sent；
It is measured according to the measuring control information, to the centralized processing unit reporting measurement reports or transmissionAbnormal quality indicates.
In an alternate embodiment of the present invention, it is described according to the measuring control information measure including at least it is following itOne：
Monitor the transmission quality of whole business datums of the distributed processing unit；
Monitor the transmission quality of the business datum of one or more user equipmenies of the distributed processing unit carrying.
In an alternate embodiment of the present invention, it is described to the centralized processing unit reporting measurement reports or transmission matterAmount exception indicates：
Periodically indicated extremely to the centralized processing unit reporting measurement reports or transmission quality；
Event indicates extremely to the centralized processing unit reporting measurement reports or transmission quality.
In an alternate embodiment of the present invention, the measurement includes instruction following one：
Down buffer storage data average delay in distributed processing unit, the PDU data cached in distributed processing unit areIt is no beyond the maximum delay configured in the measuring control information, RLC average repeat times, some RLC PDU number of retransmissions isIt is no more than the maximum retransmission configured in the measuring control information, hybrid automatic repeat-request average repeat time, someWhether hybrid automatic repeat-request data packet retransmission number is more than the maximum retransmission configured in the measuring control information.
The present invention also provides a kind of distributed processing units including above-mentioned transmission control unit.
In the above embodiment of the present invention, all emphasizes particularly on different fields to the description of each embodiment, do not have in some embodimentThe part of detailed description may refer to the associated description of other embodiment.
If above-mentioned apparatus or module are realized in the form of SFU software functional unit and sell or use as independent productWhen, it can be stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantiallyThe all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other wordsIt embodies, which is stored in a storage medium, including some instructions are used so that a computerEquipment (can be personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole orPart steps.And storage medium above-mentioned includes：USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are depositedReservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can to store program codeMedium.
Although disclosed herein embodiment it is as above, the content only for ease of understanding the present invention and useEmbodiment is not limited to the present invention.Technical staff in any fields of the present invention is taken off not departing from the present inventionUnder the premise of the spirit and scope of dew, any modification and variation, but the present invention can be carried out in the form and details of implementationScope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.