CN104519529B - A kind of method, equipment and system for being used to be transmitted user equipment control - Google Patents
A kind of method, equipment and system for being used to be transmitted user equipment control Download PDFInfo
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- CN104519529B CN104519529B CN201310460005.8A CN201310460005A CN104519529B CN 104519529 B CN104519529 B CN 104519529B CN 201310460005 A CN201310460005 A CN 201310460005A CN 104519529 B CN104519529 B CN 104519529B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 242
- 230000009977 dual effect Effects 0.000 claims abstract description 44
- 230000000737 periodic effect Effects 0.000 claims description 16
- 230000000875 corresponding effect Effects 0.000 description 68
- 238000010586 diagram Methods 0.000 description 11
- 238000004891 communication Methods 0.000 description 8
- 230000002045 lasting effect Effects 0.000 description 4
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- XHSQDZXAVJRBMX-UHFFFAOYSA-N 2-(5,6-dichlorobenzimidazol-1-yl)-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound OC1C(O)C(CO)OC1N1C2=CC(Cl)=C(Cl)C=C2N=C1 XHSQDZXAVJRBMX-UHFFFAOYSA-N 0.000 description 2
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Abstract
The object of the present invention is to provide a kind of for being transmitted the method, equipment and system of control to user equipment.When the user equipment forms dual link with corresponding macro base station and small base station, the corresponding transmission state information of the DRB established with the user equipment is determined by the user equipment, and send it to the macro base station, then the macro base station is according to the transmission state information, the definite and corresponding transmission of configuration information of the user equipment, and configuration is transmitted to the user equipment according to the transmission of configuration information.Compared with prior art, the present invention is on the basis of dual link, it obtains needs transmission or the PDU retransmitted according to the transmission state information of user equipment or flow control is carried out to the user equipment according to the transmission state information by macro base station, it ensure that the connection of user equipment and macro base station and small base station is established and switched, improve the reliability of data transmission, the Allocation Efficiency of system is improved, reduces system power dissipation etc..
Description
Technical field
The present invention relates to the communications field more particularly to a kind of technologies for being used to be transmitted user equipment control.
Background technology
Currently, if the user equipment with macro base station or small base station is connected by single connection mode, i.e. the user
Equipment is connected solely to the side in the macro base station or the small base station, then when the user equipment moves between network, it is necessary to
Constantly switch between macro base station and small base station, so as to easily cause handover failure.
In the standard R12 of 3GPP LTE, it is proposed that new research project is " for the high-rise aspects of E-UTRA and E-UTRAN-
Cell enhancing ", one of them important aspect be exactly support arrive macrocell（The cell of covering is provided by macro base station）Layer and
The dual link of small cell layer（dual connectivity）.
Fig. 1 is shown in MeNB（Macro base station, Macro eNB）With SeNB（Small base station, Small eNB）Middle user equipment
Dual link.Wherein, the user equipment forms dual link with corresponding macro base station and small base station, and the dual link includes described grand
Connection and the small base station and the connection of the user equipment of the base station with the user equipment.
In the discussion of RAN2, the following user-plane protocol framework available for dual link is defined：
-1A：S1-U ends in SeNB, and with independent PDCP（It is separated without carrying, no bearer split）；
-2A：S1-U ends in MeNB, is separated in MeNB without carrying, and has independent PDCP entities in SeNB（Such as
Fig. 2（a）It is shown）；
-2C：S1-U ends in MeNB, is separated in MeNB without carrying, and has independent RLC entities in SeNB（Such as
Fig. 2（b）It is shown）；
-3C：S1-U ends in MeNB, has carrying to separate in MeNB, and real with independent RLC for separated carrying
Body（Such as Fig. 2（c）It is shown）；
-3D：S1-U ends in MeNB, has carrying to separate in MeNB, and real for separated RLC of the carrying with principal and subordinate
Body.
Under 2A, 2C and 3C, if the interface between MeNB and SeNB there are data loss, can not under present scheme
Recover lost data for the user equipment, so that user equipment can not obtain complete information, to user experience
It is very unfavorable.
The content of the invention
The object of the present invention is to provide a kind of for being transmitted the method, equipment and system of control to user equipment.
According to an aspect of the invention, there is provided a kind of method for being transmitted control to user equipment, wherein,
The user equipment forms dual link with corresponding macro base station and small base station, and the dual link includes the macro base station and the use
The connection of family equipment and the small base station and the connection of the user equipment, this method comprise the following steps：
User equipment described in a determines the corresponding transmission state information of the DRB established with the user equipment, wherein,
The transmission state information includes PDCP status informations or DRB data related status informations；
The transmission state information is sent to the macro base station by user equipment described in b；
Macro base station described in c determines to believe with the corresponding transmission configuration of the user equipment according to the transmission state information
Breath；
Macro base station described in d is transmitted configuration according to the transmission of configuration information to the user equipment.
According to another aspect of the present invention, a kind of grand base for being used to implement and control being transmitted to user equipment is provided
It stands, wherein, the user equipment forms dual link with corresponding macro base station and small base station, and the dual link includes the macro base station
Connection and the small base station and the connection of the user equipment, the equipment with the user equipment include：
Acquisition device, for acquisition and the corresponding transmission state information of the user equipment, wherein, the transmission state
Information includes PDCP status informations or DRB data related status informations；
Determining device is configured, for according to the transmission state information, determining and the corresponding transmission of the user equipment
Configuration information；
Configuration device, for according to the transmission of configuration information, configuration to be transmitted to the user equipment.
In accordance with a further aspect of the present invention, a kind of use that the transmission control to user equipment is realized for auxiliary is additionally provided
Family equipment, wherein, the user equipment forms dual link with corresponding macro base station and small base station, and the dual link includes described grand
Connection and the small base station and the connection of the user equipment, the equipment of the base station with the user equipment include：
State determination device, for determining the corresponding transmission state information of DRB established with the user equipment,
In, the transmission state information includes PDCP status informations or DRB data related status informations；
State sending device, for the transmission state information to be sent to the macro base station.
According to another aspect of the invention, additionally provide a kind of small for realization to be aided in control the transmission of user equipment
Base station, wherein, the user equipment forms dual link with corresponding macro base station and small base station, and the dual link includes the grand base
Standing includes with the connection of the user equipment and the small base station and the connection of the user equipment, the equipment：
Acquisition device is configured, for obtaining the PDCP PDU that the needs that the macro base station is sent are transmitted or retransmitted；
Sending device is transmitted, for the PDCP PDU to be sent to the user equipment.
According to another aspect of the present invention, a kind of be used to implement is additionally provided to be transmitted control to user equipment and be
System, wherein, the user equipment forms dual link with corresponding macro base station and small base station, and the dual link includes the macro base station
Connection and the small base station and the connection of the user equipment with the user equipment, which includes as described above
Macro base station, user equipment as described above and small base station as described above.
Compared with prior art, the present invention is when the user equipment and corresponding macro base station and small base station composition dual link
When, the corresponding transmission state information of the DRB established with the user equipment is determined by the user equipment, and by described in
Transmission state information is sent to the macro base station, and then the macro base station determines and the use according to the transmission state information
The corresponding transmission of configuration information of family equipment, and according to the transmission of configuration information, configuration is transmitted to the user equipment；
So as on the basis of dual link, need to transmit obtaining for the user equipment according to the transmission state information of user equipment or
The PDU of re-transmission carries out flow control according to the transmission state information by the macro base station to the user equipment, ensure that
The connection of user equipment and macro base station and small base station is established and switching, improves the reliability of data transmission, improves system
Allocation Efficiency reduces system power dissipation etc..
Moreover, the present invention can also be determined that the DRB established with the user equipment is corresponding by the user equipment
Transmission state information, wherein, the DRB that the user equipment is established is built by the user equipment for being unloaded to the small base station
Vertical DRB；Further, can also determine to be built with the user equipment by the user equipment according to preset trigger condition
The corresponding transmission state information of vertical DRB；So as to ensure that the DRB established when the user equipment is the user equipment
When being unloaded to the DRB that the small base station is established, the connection for realizing user equipment and macro base station and small base station is established and switched,
The reliability of data transmission is improved, improves the Allocation Efficiency of system, reduces system power dissipation etc..
Moreover, when the transmission of configuration information includes needs transmission or the PDU retransmitted, the present invention can also be by described
Macro base station is according to the transmission of configuration information, it would be desirable to which transmission or the PDU retransmitted are sent to the small base station, then by described small
The PDU is sent to the user equipment by base station；It is achieved thereby that the transmission of the PDU under a variety of user-plane protocol frameworks
Or retransmit, user equipment and macro base station and the connection foundation and switching of small base station are realized, improves the reliability of data transmission,
The Allocation Efficiency of system is improved, reduces system power dissipation etc..
Moreover, comprising carrying separation in the macro base station, and for it is separated be carried on the macro base station side with it is described
When small base station side is respectively provided with independent RLC entities, and when the transmission of configuration information includes needs transmission or the PDCP retransmitted
During PDU, the present invention can also be by the macro base station according to the transmission of configuration information, it would be desirable to transmission or the PDCP PDU retransmitted
The RLC entities positioned at the macro base station are sent to, the PDCP PDU are then sent to the user by the macro base station and are set
It is standby；It is achieved thereby that in specific user's plane protocol architecture（3C）Under PDU transmission or re-transmission, realize user equipment with it is grand
The connection of base station and small base station is established and switching, improves the reliability of data transmission, improves the Allocation Efficiency of system,
Reduce system power dissipation etc..
Moreover, when the transmission of configuration information includes flow control information, the present invention can also be by the macro base station
According to the transmission of configuration information, flow control is implemented to the DRB for being unloaded to small base station；It is achieved thereby that the user equipment
Flow control is carried out, user equipment and macro base station and the connection foundation and switching of small base station is ensure that, improves data transmission
Reliability improves the Allocation Efficiency of system, reduces system power dissipation etc..
Description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, of the invention is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 shows one kind of one side according to the present invention in MeNB（Macro base station）With SeNB（Small base station）Middle user sets
Standby dual link schematic diagram；
Fig. 2 shows that three kinds of one side according to the present invention can be used for the user-plane protocol configuration diagram of dual link；
Fig. 3 show one side according to the present invention it is a kind of for user equipment is transmitted the user equipment of control with
The equipment schematic diagram of macro base station；
Fig. 4 shows that kind in accordance with a preferred embodiment of the present invention sets for being transmitted the user of control to user equipment
Standby, macro base station and the equipment schematic diagram of small base station；
There are data by a kind of PDCP PDU for being sent to small base station that Fig. 5 shows according to a preferred embodiment of the present invention
The dual link schematic diagram of loss；
Fig. 6 show according to another aspect of the present invention it is a kind of from user equipment and macro base station cooperation realization for
Family equipment is transmitted the method flow diagram of control；
Fig. 7 shows that one kind in accordance with a preferred embodiment of the present invention is real with user equipment, macro base station and small base station
It is current in the method flow diagram that control is transmitted to user equipment.
The same or similar reference numeral represents the same or similar component in attached drawing.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 3 show one side according to the present invention it is a kind of for user equipment is transmitted the user equipment of control with
The equipment schematic diagram of macro base station；Wherein, the user equipment 1 includes state determination device 11, state sending device 12, described grand
Base station 2 includes acquisition device 21, configuration determining device 22, configuration device 23.The user equipment 1 is each with the macro base station 2
A device cooperates, and control is transmitted to user equipment to realize；Wherein, the user equipment and corresponding macro base station and
Small base station forms dual link, the dual link include the macro base station and the user equipment connection and the small base station with
The connection of the user equipment.
Specifically, the state determination device 11 of the user equipment 1 determines the DRB established with the user equipment
（Data Radio Bearer, Data Radio Bearer）Corresponding transmission state information, wherein, the transmission state packet
Include PDCP status informations or DRB data related status informations；The transmission state information is sent to institute by state sending device 12
State macro base station；Correspondingly, the acquisition device 21 of the macro base station 2 is obtained believes with the corresponding transmission state of the user equipment
Breath, wherein, the transmission state information includes PDCP status informations or DRB data related status informations；Configure determining device 22
According to the transmission state information, determine and the corresponding transmission of configuration information of the user equipment；Configuration device 23 is according to institute
Transmission of configuration information is stated, configuration is transmitted to the user equipment.
Here, the above method can be used in user-plane protocol framework 2A, 2C, 3C or 3D.
The user equipment 1 includes but not limited to PC, smart mobile phone, tablet computer etc., and any one can be with institute
State the equipment that macro base station is connected；The macro base station 2 can be in macrocell as control base station base station or
Master base station in master base station-prothetic group station structure.Here, the network includes but not limited to 3GPP etc..Moreover, macro base station 2 with it is each
Communication mode between a user equipment 1 is mutual indepedent.
It constantly works between above-mentioned each device, here, it will be understood by those skilled in the art that " lasting " refers to
It states each device to require in real time or according to the operating mode of setting or real-time adjustment respectively, is transmitted status information
Determine, the sending and receiving of transmission state information, the determining of transmission of configuration information, transmission configuration etc., until the user equipment
Stop determining the corresponding transmission state information of DRB established with the user equipment.
The state determination device 11 of the user equipment 1 determines the corresponding biographies of DRB established with the user equipment
Defeated status information, wherein, the transmission state information includes PDCP status informations or DRB data related status informations.
Here, the user equipment forms dual link with corresponding macro base station and small base station；Here it is shown that one kind is used for
The method for forming dual link with corresponding macro base station and small base station for the user equipment：
Specifically, when the user equipment accesses macro base station, the user equipment establishes RRC companies with the macro base station
It connects, at this point, user equipment is only connected with macro base station there are one RRC；Then the macro base station is based on channel conditions and user equipment
Throughput demand coordinate for the small base station of user device configuration, such as by the macro base station and the small base station as the user
The resource of equipment distribution and the relevant configuration information of the small base station is obtained from the small base station, the macro base station will at least portion
Downlink data is divided to be sent to the small base station, for being transmitted to the user when the user equipment accesses the small base station
Equipment, and the relevant configuration information of the small base station of acquisition is sent to the user equipment by the macro base station；The use
Family equipment receives the relevant configuration information of the small base station from the macro base station, and accesses the small base station.At this point, user sets
It is standby that there is dual link.
The state determination device 11 by based on the PDU data information acquired in the user equipment, determine with it is described
The corresponding transmission state information of DRB that user equipment is established；Wherein, the transmission state information includes PDCP status informations
Or DRB data related status informations.
Here, when the user-plane protocol framework is 2C or 3C, PDCP PDU pass through Xn interfaces（Or the X2 of enhancing connects
Mouthful）SeNB is sent to, the transmission state information is PDCP status informations, here, the PDCP status informations are not as received
/ paid-in PDCP SN（Sequence number）；
When the user-plane protocol framework be 2A when, it is necessary on the PDCP layers of MeNB introduce a new layer, this
Layer can store the data packet of the DRB for being unloaded to small base station sent from core net for MeNB, while can pass through data packet
Xn interfaces are sent to the PDCP entities positioned at small base station；Then user equipment 1 can determine whether the DRB phases established with the user equipment
DRB data related status informations corresponding, on the mew layer, the DRB data related status information include having obtained
And/or the sequence information of the PDU information not yet obtained；So as to be sent to the grand base when the DRB data related status information
When standing, the macro base station can obtain the transmission state of current PDU.
Preferably, the state determination device 11 of the user equipment 1 can determine the DRB established with the user equipment
Corresponding transmission state information, wherein, the transmission state information includes PDCP status informations or DRB data correlated condition is believed
Breath, the DRB that the user equipment is established is to be unloaded to the DRB that the user equipment of the small base station is established.It is described to unload
The DRB for being downloaded to small base station refers to the DRB for providing the transmission service of uplink and downlink for this DRB by the administrative cell in small base station.
Specifically, the state determination device 11 is based on the PDU data information acquired in the user equipment, definite and institute
State the corresponding transmission state information of DRB that user equipment is established；Wherein, the transmission state information is believed including PDCP states
Breath or DRB data related status informations.Wherein, the DRB that the user equipment is established is be unloaded to the small base station described
The DRB that user equipment is established, the DRB only established on macro base station hence for other do not use this method, to improve processing
Efficiency reduces the processing complexity of UE.
Here, those skilled in the art will be understood that when the DRB that the user equipment is established is to be unloaded to the small base
During the DRB that the user equipment stood is established, other processing steps of the state determination device 11 are such as assisted in user plane
It is identical with the processing method of the state determination device 11 in above-mentioned Fig. 3 for the processing method in 2A, 2C, 3C or 3D to discuss framework
Or it is similar, therefore details are not described herein, and be incorporated herein by reference.
It is highly preferred that the state determination device 11 of the user equipment 1 can according to preset trigger condition, determine with it is described
The corresponding transmission state information of DRB that user equipment is established, wherein, the transmission state information includes PDCP status informations
Or DRB data related status informations, the DRB that the user equipment is established are the user equipment for being unloaded to the small base station
The DRB established.
Specifically, wherein, the preset trigger condition includes following at least any one：
- by the trigger conditions of the user device configuration：For example, method of the user equipment according to protocol conventions
Or customized method, actively trigger conditions are configured, wherein, the trigger conditions include but not limited to institute
State the PDCP data packets that user equipment detects loss（Such as by being detected to PDCP SN, when detecting low sequence number
When PDCP data packets receive not yet, it is determined as the PDCP data packets lost）Or user equipment detects the PDCP numbers of loss
The predetermined time is continued above according to bag（Such as one second）When；
- by the periodic trigger condition of the user device configuration：For example, side of the user equipment according to protocol conventions
Method or customized method, actively configure periodic trigger condition, wherein, the periodic trigger condition such as user sets
The standby corresponding PDCP status informations of DRB that when predefined time interval, the definite and user equipment is established；
- the trigger conditions configured by the macro base station：For example, the user equipment with the macro base station by intersecting
Mutually, the trigger conditions that the macro base station is configured are obtained, wherein, the trigger conditions include but not limited to the use
Family equipment detects the PDCP data packets of loss（Such as by being detected to PDCP SN）Or user equipment detects loss
PDCP data packets be continued above the predetermined time（Such as one second）When；
- the periodic trigger condition configured by the macro base station：For example, the user equipment by with the macro base station phase
Interaction, obtains the periodic trigger condition that the macro base station is configured, wherein, the periodic trigger condition such as user equipment is every
Every fixed time interval（The time interval is configured by macro base station）When, it determines opposite with the DRB that the user equipment is established
The PDCP status informations answered.
The transmission state information is sent to the macro base station by state sending device 12.
Specifically, when the state determination device 11 determines the corresponding transmission of DRB established with the user equipment
After status information, the state sending device 12 is based on various types of communication agreement, the transmission state information is sent to described grand
Base station.
Correspondingly, the acquisition of acquisition device 21 of the macro base station 2 and the corresponding transmission state information of the user equipment,
Wherein, the transmission state information includes PDCP status informations or DRB data related status informations.
Determining device 22 is configured according to the transmission state information, is determined and the corresponding transmission configuration of the user equipment
Information.
Specifically, as shown in figure 5, when the transmission state information includes PDCP status informations or DRB data correlation-likes
State information, for the configuration determining device 22 according to the transmission state information, knowing has which that should be transferred to the user
The PDU data of equipment is not transferred to the user equipment also, so as to which the configuration determining device 22 is according to the transmission state
Information, it would be desirable to transmission or retransmit the PDU data as with the corresponding transmission of configuration information of the user equipment；
Alternatively, the configuration determining device 22, according to the transmission state information, which data knows has be transmitted
The user equipment has been arrived, so as to which the configuration determining device 22 is according to the transmission state information, has determined to set with the user
Standby corresponding flow control information.
Configuration device 23 is transmitted configuration according to the transmission of configuration information to the user equipment.
Specifically, the configuration device 23 obtains the transmission of configuration information determined by the configuration determining device 22,
According to different transmission of configuration information, corresponding transmission configuration is carried out to the user equipment.
For instance, it is preferred that when the transmission of configuration information includes flow control information, the configuration device 23 can be with
According to the transmission of configuration information, flow control is implemented to the DRB for being unloaded to small base station.
Specifically, in user-plane protocol framework 2A, 2C and 3C, 3D, the configuration device 23 is according to the transmission
Configuration information adjusts the message transmission rate that the DRB is sent to the small base station, so as to fulfill the DRB to being unloaded to small base station
Implement flow control, buffer status report can be sent to the macro base station to avoid the small base station or transmission state is reported, by
In the transmission state information that when one way round-trip delay reaches 60ms, user equipment is sent speed is reported than the caching that small base station is sent
Degree faster, therefore improves the validity of the flow control in macro base station.
For instance, it is preferred that being separated when including carrying in the macro base station, and the macro base station side is carried on for separated
When being respectively provided with independent RLC entities with the small base station side, when the transmission of configuration information includes what needs were transmitted or retransmitted
During PDCP PDU, the configuration device 23 can be according to the transmission of configuration information, it would be desirable to transmission or the PDCP PDU retransmitted
It is sent to the RLC entities positioned at the macro base station；Wherein, the macro base station further includes sending device（It is not shown）, the transmission
The PDCP PDU are sent to the user equipment by device.
Specifically, when, comprising carrying separation, and being carried on the macro base station side and institute for separated in the macro base station
When stating small base station side and being respectively provided with independent RLC entities（I.e. in user-plane protocol framework 3C）, when the transmission of configuration information
When including needs transmission or the PDCP PDU retransmitted, the configuration device 23 is according to the PDCP for needing to transmit or retransmit
PDU, it would be desirable to which the PDCP PDU of transmission or re-transmission are sent to the RLC entities positioned at the macro base station；Then by the macro base station
In sending device the PDCP PDU are sent directly to the user equipment.
Fig. 4 shows a kind of user for being used to be transmitted user equipment control in accordance with a preferred embodiment of the present invention
Equipment, macro base station and the equipment schematic diagram of small base station；Wherein, the user equipment 1 ' includes state determination device 11 ', state is sent out
Device 12 ' is sent, the macro base station 2 ' includes acquisition device 21 ', configuration determining device 22 ', configuration device 23 ', the small base station
3 ' include configuration acquisition device 31 ', transmission sending device 32 '.The user equipment 1 ', the macro base station 2 ' and the small base station
3 ' each device cooperates, and control is transmitted to user equipment to realize；Wherein, the user equipment with it is corresponding grand
Base station and small base station form dual link, and the dual link includes the connection of the macro base station and the user equipment and described small
Base station and the connection of the user equipment.
Specifically, the state determination device 11 ' of the user equipment 1 ' determines the DRB established with the user equipment
（Data Radio Bearer, Data Radio Bearer）Corresponding transmission state information, wherein, the transmission state packet
Include PDCP status informations or DRB data related status informations；The transmission state information is sent to institute by state sending device 12 '
State macro base station；Correspondingly, the acquisition device 21 ' of the macro base station 2 ' is obtained believes with the corresponding transmission state of the user equipment
Breath, wherein, the transmission state information includes PDCP status informations or DRB data related status informations；Configure determining device 22 '
According to the transmission state information, determine with the corresponding transmission of configuration information of the user equipment, wherein, the transmission configuration
Information includes needs transmission or the PDU retransmitted；Configuration device 23 ' is according to the transmission of configuration information, it would be desirable to transmission or again
The PDU of biography is sent to the small base station；Correspondingly, the configuration acquisition device 31 ' of the small base station 3 ' obtains the macro base station hair
The PDU that the needs sent are transmitted or retransmitted；The PDU is sent to the user equipment by transmission sending device 32 '.
Wherein, the state determination device 11 ' of the user equipment 1 ', state sending device 12 ', the macro base station 2 ' obtain
Take device 21 ', corresponding intrument is identical or essentially identical shown in configuration determining device 22 ' and Fig. 3, therefore details are not described herein again, and leads to
The mode quoted is crossed to be incorporated herein.
Here, the above method can be used in user-plane protocol framework 2A, 2C, 3C or 3D.
It constantly works between above-mentioned each device, here, it will be understood by those skilled in the art that " lasting " refers to
It states each device to require in real time or according to the operating mode of setting or real-time adjustment respectively, is transmitted status information
It determines, the sending and receiving of transmission state information, the determining of transmission of configuration information, transmission configuration and PDU be sent to user
Equipment etc., until the user equipment stops determining the corresponding transmission state information of DRB established with the user equipment.
Configuration device 23 ' is according to the transmission of configuration information, it would be desirable to which transmission or the PDU retransmitted are sent to the small base
It stands.
Specifically, here, the PDU for needing to transmit or retransmit includes but not limited to PDCP PDU（Such as in user plane
In protocol infrastructure 2C or 3C）And the mew layer PDU on PDCP（Such as in user-plane protocol framework 2A）.The configuration
Device 23 ' is according to the transmission of configuration information, based on various communication protocols, it would be desirable to which the PDU of transmission or re-transmission is sent to described
Small base station.
Correspondingly, the configuration acquisition device 31 ' of the small base station 3 ' is based on various communication protocols, obtains the macro base station hair
The PDU that the needs sent are transmitted or retransmitted.The PDU is sent to the user equipment by transmission sending device 32 '.
Fig. 6 show according to another aspect of the present invention it is a kind of from user equipment and macro base station cooperation realization for
Family equipment is transmitted the method flow diagram of control.Each step of the user equipment 1 and the macro base station 2 cooperates,
Control is transmitted to user equipment to realize；Wherein, the user equipment forms doubly-linked with corresponding macro base station and small base station
It connects, the dual link includes connection of the macro base station with the user equipment and the small base station and the user equipment
Connection.
Specifically, in step s1, the user equipment determines the DRB established with the user equipment（Data
Radio Bearer, Data Radio Bearer）Corresponding transmission state information, wherein, the transmission state information includes PDCP
Status information or DRB data related status informations；In step s2, the transmission state information is sent to by the user equipment
The macro base station；Correspondingly, in step s2, the macro base station is obtained to be believed with the corresponding transmission state of the user equipment
Breath, wherein, the transmission state information includes PDCP status informations or DRB data related status informations；It is described in step s3
Macro base station determines and the corresponding transmission of configuration information of the user equipment according to the transmission state information；In step s4,
The macro base station is transmitted configuration according to the transmission of configuration information to the user equipment.
Here, the above method can be used in user-plane protocol framework 2A, 2C, 3C or 3D.
It constantly works between above steps, here, it will be understood by those skilled in the art that " lasting " refers to
It states each step to require in real time or according to the operating mode of setting or real-time adjustment respectively, is transmitted status information
Determine, the sending and receiving of transmission state information, the determining of transmission of configuration information, transmission configuration etc., until the user equipment
Stop determining the corresponding transmission state information of DRB established with the user equipment.
In step s1, the user equipment determines the corresponding transmission states of DRB established with the user equipment
Information, wherein, the transmission state information includes PDCP status informations or DRB data related status informations.
Here, the user equipment forms dual link with corresponding macro base station and small base station；Here it is shown that one kind is used for
The method for forming dual link with corresponding macro base station and small base station for the user equipment：
Specifically, when the user equipment accesses macro base station, the user equipment establishes RRC companies with the macro base station
It connects, at this point, user equipment is only connected with macro base station there are one RRC；Then the macro base station is based on channel conditions and user equipment
Throughput demand coordinate for the small base station of user device configuration, such as by the macro base station and the small base station as the user
The resource of equipment distribution and the relevant configuration information of the small base station is obtained from the small base station, the macro base station will at least portion
Downlink data is divided to be sent to the small base station, for being transmitted to the user when the user equipment accesses the small base station
Equipment, and the relevant configuration information of the small base station of acquisition is sent to the user equipment by the macro base station；The use
Family equipment receives the relevant configuration information of the small base station from the macro base station, and accesses the small base station.At this point, user sets
It is standby that there is dual link.
In step s1, the user equipment by based on the PDU data information acquired in the user equipment, determine with
The corresponding transmission state information of DRB that the user equipment is established；Wherein, the transmission state information includes PDCP states
Information or DRB data related status informations.
Here, when the user-plane protocol framework is 2C or 3C, PDCP PDU pass through Xn interfaces（Or the X2 of enhancing connects
Mouthful）SeNB is sent to, the transmission state information is PDCP status informations, here, the PDCP status informations are not as received
/ paid-in PDCP SN（Sequence number）；
When the user-plane protocol framework be 2A when, it is necessary on the PDCP layers of MeNB increase a new layer, this
The data packet for the DRB for being unloaded to small base station that layer can be sent from storage from core net；Data packet can be passed through Xn interfaces simultaneously
The PDCP entities positioned at small base station are sent to, then the DRB that user equipment 1 can determine whether with the user equipment is established is corresponding
, DRB data related status informations on the mew layer, the DRB data related status information include having obtained and/or
The PDU sequence informations not yet obtained；Thus when the DRB data related status information is sent to the macro base station, it is described grand
Base station can obtain the transmission state of current PDU.
Preferably, in step s1, the DRB that the user equipment can be determined with the user equipment is established is corresponding
Transmission state information, wherein, the transmission state information include PDCP status informations or DRB data related status informations, institute
It is to be unloaded to the DRB that the user equipment of the small base station is established to state the DRB that user equipment is established.It is described be unloaded to it is small
The DRB of base station refers to the DRB for providing the transmission service of uplink and downlink for this DRB by the administrative cell in small base station.
Specifically, in step s1, the user equipment is based on the PDU data information acquired in the user equipment, really
The fixed corresponding transmission state information of DRB established with the user equipment；Wherein, the transmission state information includes PDCP
Status information or DRB data related status informations.Wherein, the DRB that the user equipment is established is to be unloaded to the small base station
The DRB that is established of the user equipment, the DRB only established on macro base station hence for other does not use this method, to carry
High treatment efficiency reduces the processing complexity of UE.
Here, those skilled in the art will be understood that when the DRB that the user equipment is established is to be unloaded to the small base
During the DRB that the user equipment stood is established, in step s1, other processing steps of the user equipment, such as in user
Plane protocol architecture be 2A, 2C, 3C or 3D in processing method it is identical with the processing method of the step s1 in above-mentioned Fig. 6 or
It is similar, therefore details are not described herein, and be incorporated herein by reference.
It is highly preferred that in step s1, the user equipment can determine to set with the user according to preset trigger condition
The standby corresponding transmission state information of DRB established, wherein, the transmission state information includes PDCP status informations or DRB
Data related status information, the DRB that the user equipment is established are built by the user equipment for being unloaded to the small base station
Vertical DRB.
Specifically, wherein, the preset trigger condition includes following at least any one：
- by the trigger conditions of the user device configuration：For example, method of the user equipment according to protocol conventions
Or customized method, actively trigger conditions are configured, wherein, the trigger conditions include but not limited to institute
State the PDCP data packets that user equipment detects loss（Such as by being detected to PDCP SN, when detecting low sequence number
When PDCP data packets receive not yet, it is determined as the PDCP data packets lost）Or user equipment detects the PDCP numbers of loss
The predetermined time is continued above according to bag（Such as one second）When；
- by the periodic trigger condition of the user device configuration：For example, side of the user equipment according to protocol conventions
Method or customized method, actively configure periodic trigger condition, wherein, the periodic trigger condition such as user sets
The standby corresponding PDCP status informations of DRB that when predefined time interval, the definite and user equipment is established；
- the trigger conditions configured by the macro base station：For example, the user equipment with the macro base station by intersecting
Mutually, the trigger conditions that the macro base station is configured are obtained, wherein, the trigger conditions include but not limited to the use
Family equipment detects the PDCP data packets of loss（Such as by being detected to PDCP SN）Or user equipment detects loss
PDCP data packets be continued above the predetermined time（Such as one second）When；
- the periodic trigger condition configured by the macro base station：For example, the user equipment by with the macro base station phase
Interaction, obtains the periodic trigger condition that the macro base station is configured, wherein, the periodic trigger condition such as user equipment is every
Every fixed time interval（The time interval is configured by macro base station）When, it determines opposite with the DRB that the user equipment is established
The PDCP status informations answered.
In step s2, the transmission state information is sent to the macro base station by the user equipment.
Specifically, when the step s1 determines the corresponding transmission state information of the DRB established with the user equipment
Afterwards, in step s2, the user equipment is based on various types of communication agreement, and the transmission state information is sent to the grand base
It stands.
Correspondingly, in step s2, the macro base station obtains and the corresponding transmission state information of the user equipment,
In, the transmission state information includes PDCP status informations or DRB data related status informations.
In step s3, the macro base station determines corresponding with the user equipment according to the transmission state information
Transmission of configuration information.
Specifically, as shown in figure 5, when the transmission state information includes PDCP status informations or DRB data correlation-likes
State information, in step s3, for the macro base station according to the transmission state information, knowing has which that should be transferred to the use
The PDU data of family equipment is not transferred to the user equipment also, so as to which in step s3, the macro base station is according to the transmission
Status information, it would be desirable to transmission or retransmit the PDU data as with the corresponding transmission of configuration information of the user equipment；
Alternatively, in step s3, for the macro base station according to the transmission state information, which data knows has passed
It is defeated to have arrived the user equipment, so as to which in step s3, the macro base station determines and the use according to the transmission state information
The corresponding flow control information of family equipment.
In step s4, the macro base station is transmitted configuration according to the transmission of configuration information to the user equipment.
Specifically, in step s4, the macro base station obtains the identified transmission of configuration information in the step s3,
According to different transmission of configuration information, corresponding transmission configuration is carried out to the user equipment.
For instance, it is preferred that when the transmission of configuration information includes flow control information, it is described grand in step s4
Base station can implement flow control according to the transmission of configuration information to the DRB for being unloaded to small base station.
Specifically, in user-plane protocol framework 2A, 2C, 3C or 3D, in step s4, the macro base station is according to
Transmission of configuration information adjusts the message transmission rate that the DRB is sent to the small base station, so as to fulfill to being unloaded to small base station
DRB implements flow control, can send buffer status report to the macro base station to avoid the small base station or transmission state is reported,
Since the transmission state information that when one way round-trip delay reaches 60ms, user equipment is sent is reported than the caching that small base station is sent
Speed faster, therefore improves the validity of the flow control in macro base station.
For instance, it is preferred that being separated when including carrying in the macro base station, and the macro base station side is carried on for separated
When being respectively provided with independent RLC entities with the small base station side, when the transmission of configuration information includes what needs were transmitted or retransmitted
During PDCP PDU, in step s4, the macro base station can be according to the transmission of configuration information, it would be desirable to transmit or retransmit
PDCPPDU is sent to the RLC entities positioned at the macro base station；Wherein, the method further includes step s6（It is not shown）, in step
In s6, the PDCP PDU are sent to the user equipment by the macro base station.
Specifically, when, comprising carrying separation, and being carried on the macro base station side and institute for separated in the macro base station
When stating small base station side and being respectively provided with independent RLC entities（I.e. in user-plane protocol framework 3C）, when the transmission of configuration information
When including needs transmission or the PDCP PDU retransmitted, in step s4, the macro base station needs transmission or re-transmission according to described
PDCP PDU, it would be desirable to transmission or the PDCP PDU retransmitted are sent to RLC entities positioned at the macro base station；Then in step
In s6, the PDCP PDU are sent directly to the user equipment by the macro base station.
Fig. 7 shows that one kind in accordance with a preferred embodiment of the present invention is real with user equipment, macro base station and small base station
It is current in the method flow diagram that control is transmitted to user equipment.The user equipment 1 ', the macro base station 2 ' with it is described small
Each step of base station 3 ' cooperates, and control is transmitted to user equipment to realize；Wherein, the user equipment with it is corresponding
Macro base station and small base station form dual link, the dual link includes connection and the institute of the macro base station and the user equipment
State the connection of small base station and the user equipment.
Specifically, in step s1 ', the user equipment determines the DRB established with the user equipment（Data
Radio Bearer, Data Radio Bearer）Corresponding transmission state information, wherein, the transmission state information includes PDCP
Status information or DRB data related status informations；In step s2 ', the user equipment sends the transmission state information
To the macro base station；Correspondingly, in step s2 ', the macro base station obtains and the corresponding transmission state of the user equipment
Information, wherein, the transmission state information includes PDCP status informations or DRB data related status informations；In step s3 ',
The macro base station according to the transmission state information, determine with the corresponding transmission of configuration information of the user equipment, wherein, institute
Stating transmission of configuration information includes needs transmission or the PDU retransmitted；In step s4 ', the macro base station is matched somebody with somebody according to the transmission
Confidence ceases, it would be desirable to which transmission or the PDU retransmitted are sent to the small base station；Correspondingly, in step s4 ', the small base station is obtained
Take the PDU that the needs that the macro base station is sent are transmitted or retransmitted；In step s5 ', the PDU is sent to institute by the small base station
State user equipment.
Wherein, the step s1 ', step s2 ', step s3 ' are identical or essentially identical with corresponding to step shown in Fig. 6, so
Place repeats no more, and is incorporated herein by reference.
Here, the above method can be used in user-plane protocol framework 2A, 2C, 3C or 3D.
It constantly works between above steps, here, it will be understood by those skilled in the art that " lasting " refers to
It states each step to require in real time or according to the operating mode of setting or real-time adjustment respectively, is transmitted status information
It determines, the sending and receiving of transmission state information, the determining of transmission of configuration information, transmission configuration and PDU be sent to user
Equipment etc., until the user equipment stops determining the corresponding transmission state information of DRB established with the user equipment.
In step s4 ', the macro base station is according to the transmission of configuration information, it would be desirable to which transmission or the PDU retransmitted are sent
To the small base station.
Specifically, here, the PDU for needing to transmit or retransmit includes but not limited to PDCP PDU（Such as in user plane
In protocol infrastructure 2C or 3C）And the mew layer PDU on PDCP（Such as in user-plane protocol framework 2A）.In step
In s4 ', the macro base station is according to the transmission of configuration information, based on various communication protocols, it would be desirable to transmission or the PDU hairs retransmitted
It is sent to the small base station.
Correspondingly, in step s4 ', the small base station is based on various communication protocols, obtains the need that the macro base station is sent
The PDU for transmitting or retransmitting.In step s5 ', the PDU is sent to the user equipment by the small base station.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation includes within the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.This
Outside, it is clear that one word of " comprising " is not excluded for other units or step, and odd number is not excluded for plural number.That is stated in device claim is multiple
Unit or device can also be realized by a unit or device by software or hardware.The first, the second grade words are used for table
Show title, and do not represent any particular order.
Claims (14)
1. a kind of method for being transmitted control to user equipment, wherein, the user equipment and corresponding macro base station and
Small base station forms dual link, the dual link include the macro base station and the user equipment connection and the small base station with
The connection of the user equipment, this method comprise the following steps：
User equipment described in a determines the corresponding transmission state information of the DRB established with the user equipment, wherein, it is described
Transmission state information includes PDCP status informations or DRB data related status informations；
The transmission state information is sent to the macro base station by user equipment described in b；
Macro base station described in c determines and the corresponding transmission of configuration information of the user equipment according to the transmission state information；
Macro base station described in d is transmitted configuration according to the transmission of configuration information to the user equipment.
2. according to the method described in claim 1, wherein, the step a includes：
- the user equipment determines the corresponding transmission state information of the DRB established with the user equipment, wherein, it is described
Transmission state information includes PDCP status informations or DRB data related status informations, and the DRB that the user equipment is established is to unload
It is downloaded to the DRB that the user equipment of the small base station is established.
3. according to the method described in claim 2, wherein, the step a includes：
- the user equipment determines the corresponding transmission shapes of DRB established with the user equipment according to preset trigger condition
State information, wherein, the transmission state information includes PDCP status informations or DRB data related status informations, the user set
The standby DRB established is to be unloaded to the DRB that the user equipment of the small base station is established；
Wherein, the preset trigger condition includes following at least any one：
- by the trigger conditions of the user device configuration；
- by the periodic trigger condition of the user device configuration；
- the trigger conditions configured by the macro base station；
- the periodic trigger condition configured by the macro base station.
4. according to the method in any one of claims 1 to 3, wherein, when the transmission of configuration information includes needing to pass
During defeated or re-transmission PDU, the step d includes：
- the macro base station is according to the transmission of configuration information, it would be desirable to which transmission or the PDU retransmitted are sent to the small base station；
Wherein, this method further includes：
The PDU is sent to the user equipment by the-small base station.
5. according to the method in any one of claims 1 to 3, wherein, separated when including carrying in the macro base station, and it is right
In it is separated be carried on the macro base station side and the small base station side and be respectively provided with independent RLC entities when,
Wherein, when the transmission of configuration information includes needs transmission or the PDCP PDU retransmitted, the step d includes：
- the macro base station is according to the transmission of configuration information, it would be desirable to which transmission or the PDCPPDU retransmitted are sent to positioned at described grand
The RLC entities of base station；
Wherein, this method further includes：
The PDCP PDU are sent to the user equipment by the-macro base station.
6. according to the method in any one of claims 1 to 3, wherein, when the transmission of configuration information includes flow control
During information processed, the step d includes：
- the macro base station implements flow control according to the transmission of configuration information to the DRB for being unloaded to small base station.
7. a kind of be used to implement the macro base station that control is transmitted to user equipment, wherein, the user equipment with it is corresponding grand
Base station and small base station form dual link, and the dual link includes the connection of the macro base station and the user equipment and described small
Base station and the connection of the user equipment, the equipment include：
Acquisition device, for acquisition and the corresponding transmission state information of the user equipment, wherein, the transmission state information
Including PDCP status informations or DRB data related status informations；
Determining device is configured, for according to the transmission state information, determining and the corresponding transmission configuration of the user equipment
Information；
Configuration device, for according to the transmission of configuration information, configuration to be transmitted to the user equipment.
8. macro base station according to claim 7, wherein, when the transmission of configuration information includes what needs were transmitted or retransmitted
During PDU, the configuration device is used for：
- according to the transmission of configuration information, it would be desirable to transmission or the PDU retransmitted are sent to the small base station.
9. macro base station according to claim 7, wherein, it is separated when including carrying in the macro base station, and for separated
When being carried on the macro base station side and the small base station side and being respectively provided with independent RLC entities,
Wherein, when the transmission of configuration information includes needs transmission or the PDCP PDU retransmitted, the configuration device is used for：
- according to the transmission of configuration information, it would be desirable to transmission or the PDCP PDU retransmitted are sent to the RLC positioned at the macro base station
Entity；
Wherein, which further includes：
Sending device, for the PDCP PDU to be sent to the user equipment.
10. macro base station according to claim 7, wherein, when the transmission of configuration information includes flow control information,
The configuration device is used for：
- according to the transmission of configuration information, flow control is implemented to the DRB for being unloaded to small base station.
11. it is a kind of for aid in realize to user equipment transmission control user equipment, wherein, the user equipment with it is corresponding
Macro base station and small base station form dual link, the dual link includes connection and the institute of the macro base station and the user equipment
The connection of small base station and the user equipment is stated, which includes：
State determination device, for determining the corresponding transmission state information of DRB established with the user equipment, wherein,
The transmission state information includes PDCP status informations or DRB data related status informations；
State sending device, for the transmission state information to be sent to the macro base station.
12. user equipment according to claim 11, wherein, the state determination device is used for：
- determine the corresponding transmission state information of DRB established with the user equipment, wherein, the transmission state information
Including PDCP status informations or DRB data related status informations, the DRB that the user equipment is established is to be unloaded to the small base
The DRB that the user equipment stood is established.
13. user equipment according to claim 12, wherein, the state determination device is used for：
- the user equipment determines the corresponding transmission shapes of DRB established with the user equipment according to preset trigger condition
State information, wherein, the transmission state information includes PDCP status informations or DRB data related status informations, the user set
The standby DRB established is to be unloaded to the DRB that the user equipment of the small base station is established；
Wherein, the preset trigger condition includes following at least any one：
- by the trigger conditions of the user device configuration；
- by the periodic trigger condition of the user device configuration；
- the trigger conditions configured by the macro base station；
- the periodic trigger condition configured by the macro base station.
14. a kind of be used to implement the system that control is transmitted to user equipment, wherein, the user equipment and corresponding grand base
It stands and small base station forms dual link, the dual link includes the connection of the macro base station and the user equipment and the small base
It stands and the connection of the user equipment, which includes macro base station as any one of claim 7 to 10, such as right is wanted
Ask the user equipment any one of 11 to 13 and small base station；
Wherein, the small base station includes：
Acquisition device is configured, for obtaining the PDCP PDU that the needs that the macro base station is sent are transmitted or retransmitted；
Sending device is transmitted, for the PDCP PDU to be sent to the user equipment.
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| CN106572479B (en) * | 2015-10-10 | 2020-02-14 | 中国移动通信集团公司 | Selection method, triggering method, device and base station of wireless data bearer |
| EP3372003B1 (en) * | 2015-11-04 | 2021-04-21 | Telefonaktiebolaget LM Ericsson (PUBL) | Method, system and device for providing flow control in a split bearer environment |
| CN113784387B (en) | 2017-01-05 | 2024-11-01 | 华为技术有限公司 | Information transmission method and device |
| CN108282798B (en) * | 2017-01-06 | 2021-09-14 | 华为技术有限公司 | Communication method and network device |
| CN108616910B (en) | 2017-01-16 | 2020-12-01 | 中兴通讯股份有限公司 | Entity configuration method, device and system, and CU-U |
| CN107182079B (en) * | 2017-06-08 | 2020-02-18 | 清华大学 | A small cell caching method |
| WO2019047844A1 (en) * | 2017-09-07 | 2019-03-14 | 华为技术有限公司 | Uplink data transmission method, timer configuration method and related equipment |
| CN111148164B (en) | 2018-11-02 | 2021-05-28 | 电信科学技术研究院有限公司 | Data forwarding method and device, master base station and slave base station |
| CN110557780A (en) * | 2019-05-16 | 2019-12-10 | Oppo广东移动通信有限公司 | power consumption control method and device of terminal and storage medium |
| CN110708722B (en) * | 2019-09-16 | 2021-08-17 | Oppo广东移动通信有限公司 | Transmission rate control method, terminal, and computer storage medium |
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| DE60312432T2 (en) * | 2002-05-10 | 2008-01-17 | Innovative Sonic Ltd. | A method for specific triggering of a PDCP sequence number synchronization procedure |
| KR101054957B1 (en) * | 2004-08-12 | 2011-08-05 | 엘지전자 주식회사 | Control message transmission and reception method for multicast and broadcast service |
| US8396037B2 (en) * | 2008-06-23 | 2013-03-12 | Htc Corporation | Method for synchronizing PDCP operations after RRC connection re-establishment in a wireless communication system and related apparatus thereof |
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Address after: No. 388, ningqiao Road, China (Shanghai) free trade test area, Pudong New Area, Shanghai Applicant after: Shanghai NOKIA Baer Limited by Share Ltd Applicant after: Alcatel Optical Networks Israe Address before: 201206 Pudong New Area Jinqiao Ning Road, Shanghai, No. 388 Applicant before: Shanghai Alcatel-Lucent Co., Ltd. Applicant before: Alcatel Optical Networks Israe |
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