CN104144511B - For supporting the method for dual link - Google Patents
For supporting the method for dual link Download PDFInfo
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- CN104144511B CN104144511B CN201310172970.5A CN201310172970A CN104144511B CN 104144511 B CN104144511 B CN 104144511B CN 201310172970 A CN201310172970 A CN 201310172970A CN 104144511 B CN104144511 B CN 104144511B
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- 230000011664 signaling Effects 0.000 claims description 31
- 238000011068 load Methods 0.000 claims description 27
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Abstract
The present invention relates to a kind of methods for being used to support dual link in master base station in the wireless communication system based on carrier aggregation, and described method includes following steps：The master base station is sent from base station with dispatching relevant scheduling information from from base station or user equipment reception or to described.It just can so realize in master base station and from scheduling information is exchanged between base station or by receiving the scheduling information from user equipment, so that subsequent optimizing scheduling is possibly realized.
Description
Technical field
The present invention relates to wireless communication field, more particularly, to a kind of in the wireless communication system based on carrier aggregation
In master base station, from base station and user equipment for the method for supporting dual link.
Background technology
In cordless communication network of today, it will usually have master base station that coverage is larger and comparatively coverage
It is smaller from base station.Fig. 1 shows the schematic diagram 100 of the network architecture of the prior art, as seen from the figure, in such network rings
In border, master base station 110 provides the network coverage the most basic (part in figure shown by dotted background), at the same time, has
Smaller power (i.e. with smaller network coverage (region marked in figure with backslash)) such as from base station 121,
122nd, 123 and 124 network insertions for providing more high speed may.At this point, the user in its common coverage sets
It is standby to establish with master base station and from base station and communicate to connect simultaneously, this be will lead to the problem of it is as follows, i.e., how optimally
It communicates using above-mentioned master base station and from the resource of base station, i.e., how to realize efficient scheduling, so that user equipment
And the utilization that both base stations are maximized and optimized.
Usually, for the ease of mobile management, usually used using master base station as main serving cell, at this point, from
Base station will correspondingly be used as assistant service cell.At this point, for being in for user equipment therein, it may be with master
Base station and/or from base station establish communicate to connect, and the master base station and should between base station by means of nonideal backhaul network into
Row connection, this, which is unfavorable for considering, carrys out Optimized Operation.
For downlink, how how buffered data is concerning in be distributed, if the distribution of core net grade is complete
Into, then for will be directly sent to from base station from core net from the downlink data of base station and be buffered from base station under this
Row transmission.Otherwise, distribution approach will be realized in access net grade, data may be forwarded to from master base station to be received from base station for downlink
Hair.
For uplink, after uplink scheduling authorization is obtained, the uplink packet of such as RRC signaling will be sent user equipment
Bag to master base station, and another part data etc. will be sent to from base station, then be led to from base station by received bag
Nonideal backhaul network is crossed to be transmitted to master base station or be forwarded directly to core net.
It can be seen that scheduling how is performed for supporting that it is most important that doubly-linked is said in succession.For downlink, if buffering
Master base station is maintained at, so being controlled master base station by master base station and just being followed a well mapped-out plan from the scheduling on base station.For its own
Scheduling downlink resource for, do not have any problems completely, but for being controlled by master base station from the downlink of base station money
Source is then present with problems with when dispatching：
- master base station is not aware that the loading condition from base station, therefore can not perform efficient scheduling operation；
- for LTE-A, it dispatches relevant information and is primarily referred to as downlink CSI information, which connects from user equipment
It receives.According to existing carrier aggregation concept, CSI transmissions can be carried out in PUCCH or on PUSCH.Come for the former
It says, master base station will receive downlink CSI information from base station.It but for which, may be by being received from base station
To the CSI information, and there is no in master base station and the mechanism from exchange CSI information between base station now.
Two above problem will cause master base station that the efficient scheduling from base station can not be effectively performed.
Similarly, for the relevant information of uplink scheduling, such as BSR or PHR information, based on the general of existing carrier aggregation
It reads, does not limit how to send BSR and PHR.They can transmit on the upstream components carrier wave of any activity.Therefore,
The BSR and PHR may be received by master base station and from base station, as previously mentioned, there is no X2 in master base station and between base station
Signaling is used to exchange these information.
The content of the invention
According to it is above-mentioned to background technology and understanding, the first aspect of the present invention proposes one kind
For the method for supporting dual link in master base station in the wireless communication system based on carrier aggregation, the described method includes as follows
Step：
- the master base station from base station or user equipment from receiving or sent to described from base station with dispatching relevant scheduling
Information.
It just can so realize in master base station and from exchanging scheduling information between base station or by being received from user equipment
The scheduling information, so that subsequent optimizing scheduling is possibly realized.Cause the main base according to method of the present invention
It stands the various scheduling informations that can be obtained in time needed for it, so that master base station can realize optimizing scheduling, and then improves
The communication performance of entire cordless communication network.
It is described to administer one or more cells, the side from base station according to one embodiment of the present invention
Method is further comprising the steps of：
- send control signaling to the user equipment, it is designated as the user equipment addition cell；
- from the user equipment receive in response to the control signaling the first confirmation message；
- to described from the first instruction message of base station transmission, it has been the user equipment addition to indicate the master base station
The cell；And
- from it is described from base station receive in response to first instruction message the second confirmation message.
Here, it will be understood by those of skill in the art that above-mentioned steps are a kind of mode of dual link established, certainly,
Also can be also suitable by establishing the instruction of dual link or other modes for establishing dual link from base station initiation.
According to one embodiment of the present invention, when the master base station is received or sent and adjust from base station from described
When spending the relevant scheduling information, the master base station by X2 signalings from it is described from base station receive or send with scheduling it is relevant
The scheduling information.
Here, just can cause to forward the scheduling information to the master base station in time from base station in this way, it is excellent
Selection of land, it is described from base station it is no-delay the scheduling information received by it is forwarded to the master base station.
According to one embodiment of the present invention, the X2 information includes：
- user equipment identification；
- small cell index；And
At least one of in following information：
- uplink BSR information；With
- downlink channel condition information.
Here, it will be understood by those of skill in the art that the content of the X2 signalings can be according to the scheduling of required transmission
Information changes, so as to targetedly realizing the forwarding of scheduling information.
According to one embodiment of the present invention, when the master base station is received from the user equipment with dispatching phase
During the scheduling information closed, the user equipment only sends to the master base station and dispatches the relevant scheduling information.With this
The mode of sample can realize the scheduling controlled by the master base station.
According to one embodiment of the present invention, for uplink BSR or uplink PHR information, the user equipment
The upstream components carrier wave of the activity controlled by the master base station is only selected to carry out the transmission of the scheduling information.Thus just can
Ensure that the master base station can receive the uplink BSR and the uplink PHR information.
According to one embodiment of the present invention, if downlink channel condition information feedback is transmitted on PUSCH,
Then the user equipment selects cell to carry out the transmission of the scheduling information according to predefined rule.It is here, described pre-
The rule of definition be, for example, have in the cell administered by the master base station cell of minimum small cell index come into
The transmission of the row scheduling information.It will be understood by those of skill in the art that the predefined rule also can be other
The suitable rule of meaning.
The second aspect of the present invention proposes a kind of being used from base station in the wireless communication system based on carrier aggregation
In the method for supporting dual link, described method includes following steps：
- described relevant either from user equipment reception or to master base station transmission and scheduling from base station from master base station
Scheduling information.
According to it is of the present invention enable in the method for being used to supporting dual link from base station it is described effective from base station
Ground coordinates the master base station to carry out the Optimized Operation of network jointly.
It is described to administer one or more cells, the side from base station according to one embodiment of the present invention
Method is further comprising the steps of：
- from the master base station the first instruction message is received, it is small to indicate that the master base station has been that user equipment is with the addition of
Cell；And
- in response to first instruction message, send the second confirmation message to the master base station.
It will be understood by those of skill in the art that above-mentioned steps are a kind of alternative mode, and certainly, other suitable sides
Formula is also possible.
According to one embodiment of the present invention, it is described from base station by X2 signaling periodicities or in response to
The first request instruction from the master base station is sent to the master base station with dispatching relevant scheduling information.
According to one embodiment of the present invention, the method is further comprising the steps of：
- it is described from base station by X2 signaling periodicities or in response to the second request instruction from the master base station to
The master base station sends the second indication information of the loading condition of instruction cell.
According to one embodiment of the present invention, when it is described from base station periodically by X2 signalings to the master
Base station send instruction cell loading condition second indication information, it is described from base station only in the load from base station
Send the institute of the loading condition of instruction cell when situation is more than first threshold to the master base station periodically by X2 signalings
State the second indication information.In this way, network scheduling is further optimized, specifically, if the loading condition from base station
It is relatively low, such as less than first threshold, then do not know even if master base station described can also realize very well from the loading condition of base station
Scheduling, it is described that its loading condition is sent to the master without too big necessity from base station so in this case
Base station；On the contrary, when the loading condition from base station is higher, such as during higher than first threshold, come for the scheduling of master base station
It says, the loading condition from base station is then one of factor that must take into consideration, at this time must be by the loading condition from base station
It is sent to the master base station.
According to one embodiment of the present invention, second indication information includes user equipment identification and small
Area indexes.
The third aspect of the present invention is proposed in a kind of user equipment in the wireless communication system based on carrier aggregation
For supporting the method for dual link, wherein, the user equipment is sent to master base station and from base station with dispatching relevant tune respectively
Spend information.
Description of the drawings
The following detailed description to non-limiting example, other spies of the invention are read by referring to accompanying drawing
Sign, objects and advantages will become more apparent upon.
Fig. 1 shows the schematic diagram 100 of the network architecture of the prior art；And
Fig. 2, which is shown in the master base station in the wireless communication system based on carrier aggregation, is used for the method for supporting dual link
Flow chart；And
Fig. 3 shows the method from base station for supporting dual link in the wireless communication system based on carrier aggregation
Flow chart.
In the figure through different diagrams, same or similar reference numeral represents the same or similar device (module)
Or step.
Specific embodiment
It, will be with reference to the appended attached drawing for forming a present invention part in the specific descriptions of following preferred embodiment.Institute
Attached attached drawing, which has been illustrated by way of example, can realize specific embodiment.Exemplary embodiment is not intended to
Limit all embodiments according to the present invention.It is appreciated that without departing from the scope of the present invention, other can be utilized
Embodiment can also carry out structural or logicality modification.Therefore, following specific descriptions and nonrestrictive, and this
The scope of invention is defined by the claims appended hereto.
Fig. 1 shows the schematic diagram 100 of the network architecture of the prior art, which have ever made in background section retouches
It states, details are not described herein.
Fig. 2, which is shown, to be used to support dual link in a kind of master base station in the wireless communication system based on carrier aggregation
Method, it can be seen from the figure that this method comprises the following steps：
First, proceeded as follows respectively in step 210 and 220：
- send control signaling to user equipment, it is designated as user equipment and adds small cell；
- from user equipment receive in response to control signaling the first confirmation message.
Then, proceeded as follows respectively in step 230 and 240：
The first instruction message is sent to from base station, instruction master base station has been that user equipment is with the addition of small cell；And
- from from base station receive in response to the first instruction message the second confirmation message.
So far, dual link is it has been established that however, it will be understood by those of skill in the art that above-mentioned steps simply foundation pair
A kind of mode of connection, of course it is also possible to by the instruction for initiating to establish dual link from base station or other establish the side of dual link
Formula is also suitable.
Finally, in step 250 master base station from receiving from base station or user equipment or sent and scheduling phase to from base station
The scheduling information of pass.Wherein, one or more cells can be administered from base station
It just can so realize in master base station and from exchanging scheduling information between base station or by being received from user equipment
Scheduling information, so that subsequent optimizing scheduling is possibly realized.Method according to the invention enables master base station in time
The various scheduling informations needed for it are obtained, so that master base station can realize optimizing scheduling, and then improve entire wireless communication
The communication performance of network.
Here, master base station can send the scheduling information in relation to dispatching to from base station, so that natively knowing from base station
Also the required other information of completion scheduling are known on the basis of the road loading condition of its own, just can so be caused
Scheduled for its own can be completed from base station.
Optionally, when master base station from base station from when receiving or sending with dispatching relevant scheduling information, master base station can lead to
X2 signalings are crossed from receiving or sent with dispatching relevant scheduling information from base station.Such as uplink is received for example, working as from base station
When road BSR information, downlink CSI information, should from base station will be preferably no-delay these information are transmitted to main base
It stands, in this way, just can ensure that master base station can always obtain newest information, so as to be conducive to scheduling operation.It is fixed just to need at this time
Adopted X2 signalings, so that received uplink BSR information, downlink CSI information, PHR can be forwarded from base station
Information pays attention to station to corresponding.
In one embodiment according to the invention, which includes：
- user equipment identification；
- small cell index；And
At least one of in following information：
- uplink BSR information；With
- downlink channel condition information.
Here, it will be understood by those of skill in the art that the content of X2 signalings can be according to the scheduling information of required transmission
Change, so as to targetedly realizing the forwarding of scheduling information.For different scheduling informations, certain X2 signalings are wrapped
The content contained is also not quite similar, for example, when being related to for the X2 signalings of forwarding uplink BSR information, must include with
Lower part：
Customer equipment identification code (C-RNTI), so that master base station knows which uplink BSR information used from
Family equipment.
And when being related to for the X2 signalings of forward downlink CSI/PHR information, following information must be included：
Customer equipment identification code and CSI information；
Small cell index, so that master base station knows that the CSI/PHR information is for which cell, here, such as
The fruit CSI/PHR information is for main plot, then the small cell index is " 000 ".
Here, it just can cause to forward scheduling information to master base station in time from base station in this way, it is preferable that from base
It stands and the scheduling information received by it is forwarded to master base station no-delayly.
This have the advantage that need not update the carrier aggregation of the existing transmission on BSR/PHR/CSI information
Standard, therefore it has no influence for physical layer standard, and only need to define new X2 signalings.
Of course it is also possible to realize object above by defining new BSR/PHR/CSI information transmission rule, specifically
Ground in one embodiment according to the invention, when master base station is received from user equipment with dispatching relevant scheduling information, is used
Family equipment only sends to master base station and dispatches relevant scheduling information.In this way, the tune controlled by master base station can be realized
Degree.For uplink BSR or uplink PHR information, user equipment only selects the upstream components carrier wave of the activity controlled by master base station
To be scheduled the transmission of information.Thus it just can ensure that master base station can receive uplink BSR and uplink PHR information.Correspondingly,
If downlink channel condition information feedback is transmitted on PUSCH, user equipment according to predefined rule select small cell come
It is scheduled the transmission of information.Here, predefined rule is, for example, to have minimum in the cell administered by master base station
The cell of small cell index is scheduled the transmission of information.It will be understood by those of skill in the art that predefined rule
Also can be any other suitable rule.
The rule for the user equipment that above technical scheme cooperation refers to below will ensure uplink BSR/PHR information
And CSI information will can be used only on master base station, this is extremely beneficial for the scheduling that master base station is realized.
For the cell by being controlled from base station, the present invention proposes a kind of in the wireless communication based on carrier aggregation
The method for being used to support dual link from base station in system, this method comprises the following steps：
First, proceeded as follows respectively in step 310 and 320：
- from master base station the first instruction message of reception, instruction master base station has been that user equipment is with the addition of small cell；And
- in response to the first instruction message, send the second confirmation message to master base station.
Wherein, one or more cells are administered from base station.
It will be understood by those of skill in the art that above-mentioned steps are a kind of alternative mode, and certainly, other suitable sides
Formula is also possible.
Next, in a step 330, either received from base station from master base station from user equipment or to master base station send with
Dispatch relevant scheduling information.
It is according to the invention effectively to coordinate master from base station from base station for the method for dual link to be supported to enable
Base station carries out the Optimized Operation of network jointly.
In one embodiment according to the invention, from base station or in response to carrying out autonomous base by X2 signaling periodicities
The first request instruction stood is sent to master base station with dispatching relevant scheduling information.
In one embodiment according to the invention, method is further comprising the steps of：
- sent out from base station by X2 signaling periodicities or in response to the second request instruction from master base station to master base station
Send the second indication information of the loading condition of instruction cell.
In this way, just its loading condition can be sent to master base station from base station, so as to be conducive to the tune of master base station
Degree.
In one embodiment according to the invention, indicated when being sent from base station periodically by X2 signalings to master base station
Second indication information of the loading condition of cell, it is periodical only when the loading condition from base station is more than first threshold from base station
Ground sends the second indication information of the loading condition of instruction cell by X2 signalings to master base station.In this way, into one
Step optimizes network scheduling, specifically, if the loading condition from base station is relatively low, such as less than first threshold, then even if main
Base station, which is not known from the loading condition of base station, can also realize good scheduling, so in this case, not having from base station
Its loading condition is sent to master base station by too big necessity；On the contrary, when loading condition from base station is higher, such as higher than the
It is then one of factor that must take into consideration from the loading condition of base station for the scheduling of master base station during one threshold value, it is necessary at this time
Master base station will be sent to from the loading condition of base station.
In one embodiment according to the invention, the second indication information includes user equipment identification and cell index.
The invention also provides be used to support in a kind of user equipment in the wireless communication system based on carrier aggregation
The method of dual link, wherein, user equipment is sent to master base station and from base station with dispatching relevant scheduling information respectively.So that
It obtains master base station and obtains dispatching relevant information from base station.
Specifically, it is assumed that a logic channel prepares a transfer point control, then user equipment can will be used for by leading
The uplink BSR information of the logic channel of base station control is only transmitted in the uplink component carrier controlled by master base station；
Correspondingly, user equipment can by for by the uplink BSR information of the logic channel controlled from base station only by from base station
It is transmitted in the uplink component carrier of control.On the contrary, if above-mentioned hypothesis is invalid, then user equipment will replace
Uplink BSR information is sent to master base station and from base station simultaneously, so that the master base station can be as early as possible from base station with this
Learn these relevant informations.And the uplink for master base station uplink component carrier is sent in the cell of master base station control
Road PHR information, and sent in the cell controlled from base station for from the uplink PHR of base station uplink component carrier
Information；Furthermore it sends in the cell of master base station control and believes for the downlink CSI of master base station downlink component carrier
Breath, and sent in the cell controlled from base station for from the downlink CSI information of downlink component carrier.
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
How from the point of view of, the present embodiments are to be considered as illustrative and not restrictive.In addition, it will be evident that one word of " comprising " not
Exclude other elements and step, and wording "one" be not excluded for plural number.The multiple element stated in device claim also may be used
To be realized by an element.The first, the second grade words are used to indicate names, and are not represented any particular order.
Claims (17)
1. for the method for supporting dual link, the side in a kind of master base station in the wireless communication system based on carrier aggregation
Method includes the following steps：
- the master base station receives from user equipment or sends scheduling information to from base station, and the scheduling information is delayed including uplink
Rush device state report BSR information.
2. according to the method described in claim 1, wherein, described to administer one or more cells from base station, the method is also
Comprise the following steps：
- send control signaling to the user equipment, it is designated as the user equipment addition cell；
- from the user equipment receive in response to the control signaling the first confirmation message；
- to described from the first instruction message of base station transmission, indicate that the master base station is with the addition of institute for the user equipment
State cell；And
- from it is described from base station receive in response to first instruction message the second confirmation message.
3. method according to claim 1 or 2, wherein, when the master base station is from described from described in base station reception or transmission
During scheduling information, the master base station receives the scheduling information from described by X2 signalings from base station.
4. according to the method described in claim 3, wherein, the X2 signalings include：
- user equipment identification；
- small cell index；And
At least one of in following information：
- uplink buffer state reports BSR information；With
- downlink channel condition information.
5. method according to claim 1 or 2, wherein, when the master base station receives the scheduling from the user equipment
During information, the user equipment only sends the scheduling information to the master base station.
6. according to the method described in claim 5, wherein, for uplink buffer state reports BSR or uplink power margin report
PHR information is accused, the user equipment only selects the upstream components carrier wave of the activity controlled by the master base station described to carry out
The transmission of scheduling information.
7. according to the method described in claim 5, wherein, if downlink channel condition information feedback physically row shared channel
It is transmitted on PUSCH, then the user equipment selects cell to carry out the transmission of the scheduling information according to predefined rule.
8. a kind of method for being used to support dual link from base station in the wireless communication system based on carrier aggregation, the side
Method includes the following steps：
- it is described from base station from master base station either from user equipment receive or to the master base station send scheduling information, the tune
Spending information includes uplink buffer state reports BSR information.
9. according to the method described in claim 8, wherein, described to administer one or more cells from base station, the method is also
Comprise the following steps：
- from the master base station the first instruction message of reception, indicate that the master base station has been that user equipment is with the addition of small cell；
And
- in response to first instruction message, send the second confirmation message to the master base station.
10. method according to claim 8 or claim 9, wherein, it is described from base station by X2 signaling periodicities or in response to
The first request instruction from the master base station sends the scheduling information to the master base station.
11. method according to claim 8 or claim 9, wherein, the method is further comprising the steps of：
- described from base station to described by X2 signaling periodicities or in response to the second request instruction from the master base station
Master base station sends the second indication information of the loading condition of instruction cell.
12. it according to the method for claim 11, is sent out when described from base station periodically by X2 signalings to the master base station
Second indication information of the loading condition of instruction cell is sent, it is described only to surpass from base station described from the loading condition of base station
Send described the second of the loading condition of instruction cell when crossing first threshold to the master base station periodically by X2 signalings
Indication information.
13. according to the method for claim 11, wherein, second indication information includes user equipment identification and cell
Index.
14. a kind of method for being used to support dual link in user equipment in the wireless communication system based on carrier aggregation,
In, the user equipment sends scheduling information to master base station and from base station respectively, and the scheduling information includes upper line buffer shape
State reports BSR information.
15. the equipment for supporting dual link is used in a kind of master base station in the wireless communication system based on carrier aggregation, including：
At least one processing unit；
At least one processor, at least one processor are coupled at least one processing unit and store and be used for
The instruction performed by least one processing unit, described instruction by least one processing unit when being performed so that
The equipment is performed according to claim 1-7 any one of them methods.
16. a kind of equipment for being used to support dual link from base station in the wireless communication system based on carrier aggregation, including：
At least one processing unit；
At least one processor, at least one processor are coupled at least one processing unit and store and be used for
The instruction performed by least one processing unit, described instruction by least one processing unit when being performed so that
The equipment is performed according to claim 8-13 any one of them methods.
17. for the equipment for supporting dual link, bag in a kind of user equipment in the wireless communication system based on carrier aggregation
It includes：
At least one processing unit；
At least one processor, at least one processor are coupled at least one processing unit and store and be used for
The instruction performed by least one processing unit, described instruction by least one processing unit when being performed so that
The equipment performs the method according to claim 11.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310172970.5A CN104144511B (en) | 2013-05-10 | For supporting the method for dual link | |
| KR1020157034748A KR101698715B1 (en) | 2013-05-10 | 2014-05-09 | Method for supporting dual connectivity |
| JP2016512440A JP2016518793A (en) | 2013-05-10 | 2014-05-09 | How to support dual connectivity |
| EP14748269.9A EP2995036A1 (en) | 2013-05-10 | 2014-05-09 | Method for supporting dual connectivity |
| PCT/IB2014/001061 WO2014181181A1 (en) | 2013-05-10 | 2014-05-09 | Method for supporting dual connectivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310172970.5A CN104144511B (en) | 2013-05-10 | For supporting the method for dual link |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104144511A CN104144511A (en) | 2014-11-12 |
| CN104144511B true CN104144511B (en) | 2018-06-01 |
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