CN104105220B - The method and apparatus for supporting dual link - Google Patents
The method and apparatus for supporting dual link Download PDFInfo
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- CN104105220B CN104105220B CN201310116980.7A CN201310116980A CN104105220B CN 104105220 B CN104105220 B CN 104105220B CN 201310116980 A CN201310116980 A CN 201310116980A CN 104105220 B CN104105220 B CN 104105220B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/32—Hierarchical cell structures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
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Abstract
The invention provides a kind of method and apparatus for supporting dual link.This method includes：Initialization step, when UE is initially accessed macro base station, the UE is connected to Pcell to handle current LCH by Pcell, wherein Pcell is associated with macro base station, is operated in principal component carrier wave；Step is indicated, indicates that LCH will be handled or to be operated in by Pcell or Scell processing, wherein Scell in auxiliary component carrier by macro base station or small-cell base station to the UE by special RRC message.
Description
Technical field
The present invention is generally related to wireless communication field, more specifically, be related to a kind of method for supporting dual link with
Device.
Background technology
In the cordless communication network of isomery, it will usually have macro base station that coverage is larger and comparatively coverage
Less micro-base station.Fig. 1 shows the schematic diagram of cordless communication network 100 of the prior art.As shown in figure 1, in channel radio
In communication network 100, comprising a macro base station 110, it provides the basic network coverage 120, and one or more with smaller
Cell (Small Cell) base station 132,134,136 and 138 of power, its provide respectively the relatively small network coverage 142,
144th, 146 and 148 (being marked in figure with backslash).User in the range of collectively covering in macro base station and small-cell base station sets
Standby (UE) 150 can establish communication link with macro base station 110 and corresponding small-cell base station (such as small-cell base station 134) simultaneously
Connect.
Currently, (third generation affiliate counts the research project of the high-rise related content involved on cell enhancing
Draw (R12) research project (SI of (3GPP) Long Term Evolution (LTE) version 12：RP-121800)) ratify in RAN 58.The SI
An important goal be on " dual link " and " by C (control) planes and U (user) planar separations into different nodes ",
Its main research contents and aim at：
(1) determine and assess UE has the good of dual link with the macrocell and cell serviced by identical or different carrier wave
Place, and this dual link is feasible and beneficial in the case of which；
(2) determine and assess for the possible framework and protocol enhancement of feasible dual link situation to cause to core net
Influence it is minimum (if feasible), including：Control plane (C planes) and the general structure of user plane (U planes) and it
Mutual relation, such as C planes and U planes, the termination of different agreement layers, etc. are supported in different nodes.
One kind supports that possible solution for " dual link " function is used based on carrier aggregation concept, wherein macrocell
Make main plot (Primary Cell, abbreviation Pcell), be operated in principal component carrier wave, and cell is used as secondary cell
(Secondary Cell, abbreviation Scell), is operated in auxiliary component carrier.The most important benefit of this conception of species is to go out
The situation that existing Pcell changes, so as to which handoff procedure will not be triggered when UE is rested in macrocell coverage area.And work as UE
When being moved to small cell coverage area, the cell can be added as Scell.Generally, macro base station (eNB_M) and small
Cell base station (eNB_S) can control multiple carrier waves respectively.This expression will have a Pcell, eNB_M can control zero/
One/multiple Scell, eNB_S can also control zero/mono-/multiple Scell.
Based on this " dual link ", another feature on C planes and U planar separations is suggested in the SI.This is base
Consider in following：Cell can be located on higher frequency band, such as 3.5G, therefore important signaling (such as thing be transmitted in macrocell
Reason layer (PHY) signaling, wireless heterogeneous networks (RRC) signaling) higher reliability will be obtained, so as to more favourable.Therefore not
Can be highly beneficial with support RRC signaling in cell and data transfer separation.In view of current CA (carrier aggregation) specification, in order to
This separation is supported, crucial influence is the related operation of the priority of logical channels (LCP) to UE sides, as the applicant exists
On January 18th, 2013 is " method for realizing control plane and user plane separation based on carrier aggregation " submitting, entitled
Chinese patent application in proposed by.
In addition, most of companies all represent to support " dual link " at present.It is a kind of support the welcome of this feature and
The solution being widely proposed is based on CA concepts.On C planes and U planar separations, although still not determining clearly
It is fixed whether to support this feature, but its benefit is recognized by numerous companies, especially in terms of mobile management process.Also,
In order to avoid influence of the non-ideal interface to systematic function between different base station, many companies all have been proposed that eNB_S should be carried out
Scheduling operation is dispatched with controlling the Tx/Rx of their own independent of eNB_M.This expression may in eNB_M and eNB_S
There are two scattered scheduling processes respectively while work.In order to realize this case, also suggest a service or a logic
The data of channel (LCH) or a radio bearer (RB) only should be sent on one node.It is similarly to C planes and U is put down
The concept of face separation.For this conception of species, the data of Signaling Radio Bearer (SRB) only will be sent on eNB_M, and data are wireless
The data of carrying (DRB) only will be sent on eNB_S.Therefore it will be seen that the concept of this C planes and U planar separations
For realizing that higher cell dispatching efficiency is very favorable.In short, support to send a clothes on one node
The suggestion of business/LCH/RB data is very favorable, and this will help to improve cell dispatching efficiency.It is discussed herein and suggested
On how to realize the scheme of the suggestion.
The content of the invention
For problem above, the invention provides concentrate to ensure that service/RB/LCH data are small only at one
Several concrete schemes sent on area/node, and additionally provide a service/RB/LCH data only a cell/
How the influence of secondary cell behavior is handled in the case of being sent on node.
According to an aspect of the invention, there is provided a kind of be used for including a macro base station and one or more cells
The method that dual link is supported in the cordless communication network of base station, including：Initialization step, it is initially accessed in user equipment (UE) grand
During base station, the UE is connected to main plot (Pcell) or macro base station and believed with handling current logic by Pcell or macro base station
Road (LCH), wherein Pcell is associated with macro base station, is operated in principal component carrier wave；Step is indicated, passes through dedicated radio resources
Control (RRC) message will be handled by macro base station or small-cell base station to UE instructions LCH or will be by Pcell or secondary cell
(Scell) handle, wherein Scell is operated in auxiliary component carrier.
According to another aspect of the present invention, there is provided one kind is used for slight including a macro base station and one or more
The method that dual link is supported in the cordless communication network of area base station, including：So that the data of a logic channel (LCH) are only by one
Individual main plot (Pcell) or secondary cell (Scell) processing are only handled by a macro base station or small-cell base station；When the LCH institutes
The Scell for the small-cell base station being mapped to is deactivated or discharged, and in the presence of at least another work in the cordless communication network
During the Scell of dynamic small-cell base station, the data of the LCH are sent by the movable small-cell base station；When all cells
When the Scell of base station is deactivated or discharged, the data of the LCH are sent by macro base station.
According to another aspect of the present invention, there is provided one kind is used for slight including a macro base station and one or more
The method that dual link is supported in the cordless communication network of area base station, including：So that the data of a logic channel (LCH) are only by one
Individual main plot (Pcell) or secondary cell (Scell) processing are only handled by a macro base station or small-cell base station；When the LCH institutes
When the Scell for the small-cell base station being mapped to is deactivated, the transmission of the LCH is hung up until the Scell is reactivated.
According to another aspect of the present invention, there is provided one kind is used for slight including a macro base station and one or more
The method that dual link is supported in the cordless communication network of area base station, including：So that the data of a logic channel (LCH) are only by one
Individual main plot (Pcell) or secondary cell (Scell) processing are only handled by a macro base station or small-cell base station；When cell base
When the Scell to stand is deactivated, macro base station is by setting " R " bit in Scell activation/deactivation MAC CE to indicate UE rows
For.
According to another aspect of the present invention, there is provided one kind is used for slight including a macro base station and one or more
The device of dual link is supported in the cordless communication network of area base station, including：Initialization unit, it is configured as in user equipment
(UE) when being initially accessed macro base station, the UE is connected to main plot (Pcell) or macro base station with by Pcell or macro base station
Should before logic channel (LCH), wherein Pcell is associated with macro base station, is operated in principal component carrier wave；Indicating member, its
It is configured as controlling (RRC) message to indicate that LCH will be by macro base station or small-cell base station to the UE by dedicated radio resources
Reason will be handled by Pcell or secondary cell (Scell), and wherein Scell is operated in auxiliary component carrier.
According to another aspect of the present invention, there is provided one kind is used for slight including a macro base station and one or more
The device of dual link is supported in the cordless communication network of area base station, including：Dual link enabling unit, it is configured such that one
The data of logic channel (LCH) only by a main plot (Pcell) or secondary cell (Scell) processing or only by a macro base station or
Small-cell base station processing；And cell change processing unit, it is configured as the small-cell base station that the LCH is be mapped to
Scell is deactivated or discharged, and the Scell of at least another movable small-cell base station in the cordless communication network be present
When, the data of the LCH are sent by the movable small-cell base station, are additionally configured to the Scell when all small-cell base stations
When being all deactivated or discharge, the data of the LCH are sent by macro base station.
Utilize the solution of the present invention, it is possible to increase cell dispatching efficiency and realize C planes and U planar separations.
Brief description of the drawings
, will be more preferable geographical after the description below with reference to the embodiment of the invention given by drawings below
The solution present invention, and other objects of the present invention, details, feature and advantage will become apparent.In the accompanying drawings：
Fig. 1 shows the schematic diagram of the network architecture of the prior art；
Fig. 2 shows the flow chart for being used to support the method for dual link according to embodiment of the present invention；
Fig. 3 shows the flow chart for being used to support the another method of dual link according to embodiment of the present invention；
Fig. 4 shows the block diagram for being used to support the device of dual link according to embodiment of the present invention；
Fig. 5 shows the block diagram for being used to support another device of dual link according to embodiment of the present invention；
Fig. 6 shows the schematic diagram of Scell activation/deactivations MAC CE in the prior art；And
Fig. 7 shows the signal of the Scell activation/deactivation MAC CE reconfigured according to embodiment of the present invention
Figure.
Wherein, in all of the figs, same or analogous label represents there is identical, similar or corresponding feature or work(
Energy.
Embodiment
The preferred embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Preferred embodiment, however, it is to be appreciated that may be realized in various forms the disclosure without the embodiment party that should be illustrated here
Formula is limited.On the contrary, these embodiments are provided so that the disclosure is more thorough and complete, and can be by the disclosure
Scope is completely communicated to those skilled in the art.
Fig. 2 shows the flow chart for being used to support the method 200 of dual link according to embodiment of the present invention.In Fig. 2
Shown, method 200 includes initialization step 210, wherein when UE is initially accessed macro base station eNB_M, the UE is connected into Pcell
Or eNB_M handles current LCH to pass through Pcell or eNB_M.Wherein, Pcell is associated with eNB_M, is operated in principal component
On carrier wave.
Next, in instruction step 220, indicate that LCH will be by eNB_M or eNB_S to UE by special RRC message
Reason, or indicate that the LCH will be by Pcell or Scell processing.
As described above, in order to support dual link, it is to ensure that LCH data are sent only on a cell/node
Critically important, this is with being consistent for obtaining the C planes of more scheduling efficiency and the concept of U planar separations.On how to
Which which LCH of cell/node processing UE is indicated by, can there is following three kinds of options：
Option A1：Indicate the RB/LCH will (Pcell be also in which cell to UE by RB configuration/reconfigurations RRC information
Scell) on send or by which node (eNB_M or eNB_S) send；
Option A2：Indicate which service/RB/ the Scell will handle to UE by Scell configuration/reconfigurations RRC information
LCH；
Option A3：New RRC information is defined to configure each service/RB/LCH, to indicate to be used to handle each clothes to UE
Business/RB/LCH Pcell or Scell.
These three options discussed in detail below, and discuss how to realize C planes and U planes point based on these three options
From.
On option A1
For option A1, as configuration/reconfiguration RB, by adding new cell to RB configuration/reconfigurations message to refer to
Show the Target cell (such as Pcell or Scell) or destination node (such as eNB_M or eNB_S) of RB transmission.For the new cell
Definition, there are following two sub- options can contemplate：
(1)Sub- option A1.1：The new cell indicates that the RB of the configuration/reconfiguration is handled by Pcell or by Scell
Processing.
In one embodiment, the new cell includes Pcell or Scell index.The length of the new cell takes
Certainly in the Pcell and Scell quantity that are supported.For example, when network 100 supports Pcell and 7 Scell, the cell
Length be 3 bits.In this case, such as with index 000 represent that Pcell, index 001-111 represent what is supported respectively
7 Scell.
Further, the new cell is the empty RB for indicating the configuration/reconfiguration by Pcell processing.
(2)Sub- option A1.2：The new cell indicates that the RB of the configuration/reconfiguration is handled by eNB_M or by eNB_S
Processing.
In one embodiment, the new cell includes eNB_M or eNB_S index.The length of the new cell takes
Certainly in the UE eNB_S that can be connected quantity simultaneously.For example, ought only support eNB_M and eNB_S simultaneously with a UE
When being connected, the cell needs 1 bit., should when can be connected to a UE simultaneously if an eNB_M and most 3 eNB_S
Cell needs 2 bits.In this case, such as with index 00 represent that eNB_M, index 01-11 represent three eNB_S respectively.
Further, the new cell is the empty RB for indicating the configuration/reconfiguration by eNB_M processing.
As can be seen that the sub- option A1.1 and sub- option A1.2 processing list for differing only in the RB/LCH indicated by cell
The granularity of member is different：
Sub- option A1.1 be explicitly indicated handle the RB/LCH specific cell (such as Pcell or Scell), and on
The Pcell or Scell information also implicit indication RB/LCH is handled by which base station (such as eNB_M or eNB_S).
On option A2
For option A2, as configuration/reconfiguration Scell, eNB_M to Scell configuration/reconfiguration RRC informations by adding
New cell is added to carry out the RB/LCH that handled to UE instructions by the Scell of the configuration/reconfiguration.For example, institute can be indicated to UE
Which LCH the Scell of configuration/reconfiguration can handle.If the Scell of the configuration/reconfiguration belongs to a certain eNB_S, UE
Will be apparent which logic channel will be by the eNB_S processing.Its effect is similar to the sub- option A1.1 being proposed above.For example, originally
When establishing first Scell after beginningization step (step 210), eNB_M can indicate whether some current LCH will be by UE
The Scell processing.If it is, associated LCH will be no longer by Pcell processing.
In addition, as further configuration/reconfiguration RB/LCH, it may be considered that the sub- option of the following two kinds is new to handle these
LCH：
(1)Sub- option A2.1：Renewal RB/LCH configuration/reconfigurations message indicates to configure/weigh to add new cell
The RB/LCH of configuration is handled by Pcell or by Scell processing.Its specific indicating means is similar to above-mentioned sub- option
A1.1。
(2) sub- option A2.2：The RB/ of institute's configuration/reconfiguration is indicated to UE using Scell configuration/reconfigurations RRC information
LCH is handled by eNB_M or by eNB_S processing.Before UE receives the Scell configuration/reconfiguration RRC informations, matched somebody with somebody
The RB/LCH for putting/reconfiguring by default by Pcell processing, as described in step 210.
Compared with sub- option A2.1, sub- option A2.2 will not influence RB configuration RRC processes.
On option A3
On option A3, the new special RRC message defined in R12 is to indicate the Pcell for handling each RB/LCH
Or Scell, or indicate the eNB_M or eNB_S for handling each RB/LCH..Before the new RRC information is received,
For the RB of new configuration/reconfiguration, UE knows that it will be default to by Pcell processing.
As can be seen that option A3 and option A1 and option A2 has identical effect, cost is to define new special RRC
Message.Therefore it is following to focus mainly on option A1 and option A2.
It is used to support the method 200 of dual link by above-mentioned, ensure that LCH data only in a cell (such as
Pcell or Scell) on send or only by a node (such as eNB_M or eNB_S) send, it is achieved thereby that C planes and U planes
Separation.Certainly, these processes can realize some LCH/RB by multiple cells or multiple nodes to handle
In one embodiment, option A1 and option A2 can simplify to be suggested according to current SI to support C as follows
Plane and U planar separations：
For option A1, when SRB is established, establish process for RB and do not update so that SRB will be default to by Pcell
Or eNB_M processing.And when DRB is established, process will be established using new RB and the new cell will be relevant with eNB_S.That is,
Sub- option A1.2 can be advantageously selected with so that UE is able to know that DRB will be by eNB_S processing.
For option A2, addition it is new belong to eNB_S Scell before, all current LCH will be default to by eNB_
M processing.When foundation belongs to eNB_S Scell, it should indicate which DRB the new Scell will handle.And work as configuration/reconfiguration
When belonging to eNB_M Scell, the new cell will not needed and do not necessarily indicate which LCH the new Scell will handle yet.
In addition, in R12, if specifying SRB, only by eNB_M processing, DRB is only by eNB_S processing, then UE only needs to know
Whether road has eNB_S Scell junior one active states.If so, then UE performs the behavior specified to cause DRB will be only by eNB_
S processing.If it is not, then all SRB/DRB being currently configured will be by eNB_M processing.
Wherein, can be by configuring in Scell/matching somebody with somebody again in order to allow UE to know that at least one Scell belongs to eNB_S
Whether the Scell for putting one new cell configuration/reconfiguration to indicate of addition in RRC information belongs to eNB_S.So as to replaceable
Ground, there is following option A3 ' to support C planes and U planar separations.
Option A3 '：In Scell configuration/reconfiguration RRC informations insert a new cell come indicate to configure/match somebody with somebody again
Whether the Scell put belongs to eNB_S.
In summary, option A1/A2/A3 can realize when in R12 support dual link when one service/RB/LCH only by
One cell/node is handled to improve the target of dispatching efficiency, and can easily be supported based on these options C planes and
U planar separations.
Fig. 3 shows the flow chart for being used to support the another method 300 of dual link according to embodiment of the present invention.Method
300 are directed to after it ensure that LCH data only by a cell/node processing, how to tackle Scell operations
The influence of (such as Scell activation/deactivations/release).Wherein, LCH data can only be led to by a cell/node processing
Any one crossed in above-mentioned option A1, A2, A3 realize, but the invention is not limited in this, it is any to ensure a LCH
Data be only within by the scheme of a cell/node processing.Method 300 includes step 310, wherein making
LCH data are obtained only by a Pcell or Scell processing or only by an eNB_M or eNB_S processing.
When ensureing LCH data only by a cell/node processing, UE clearly knows each RB/LCH by which
Cell/node processing.According to the concept of carrier aggregation, Pcell will always be to maintain activity, therefore by Pcell or by eNB_M processing
LCH will be unaffected, and due to Scell can be directed to different situations and dynamic deactivate/activation/and discharge, therefore these
Scell operations will influence LCH handled by it.On the main influence of UE behaviors in up-link (UL) LCP processes.
Handled according to service/RB/LCH by cell (such as Pcell or Scell) or by node (such as eNB_M or eNB_S)
Reason.Here, processing also referred to as maps or linked, and it refers to that LCH processing unit is that cell (such as Pcell or Scell) is gone back
It is node (such as eNB_M or eNB_S).Therefore LCH processing unit is specified using following two granularity level：
Rank 1：The specific cell for handling LCH is specified, such as Pcell, eNB_M Scell or eNB_S Scell.This
It can be realized by the option A1+ options A1.1 or option A2 that is proposed above or option A3.
Rank 2：The specific node for handling LCH is specified, such as eNB_M or eNB_S.This can be by the choosing that is proposed above
A1+ options A1.2 or option A2 or option A3 is realized.
From the point of view of high-rise viewpoint, either in which rank, in R12, it should new UL LCP processes are defined as below, its
Cover two kinds of situations：
Situation 1：UE performs the LCP processes that R10 is defined in the LCH handled by eNB_M
Situation 2：UE performs the LCP processes that R10 is defined in the LCH handled by eNB_S
UE behaviors are discussed according to the two ranks individually below, it is as follows：
Rank 1：LCH is clearly mapped to a specific cell
For the rank, UE be best appreciated a LCH will by which cell (Pcell or eNB_M Scell or
ENB_S Scell) processing.When eNB_M Scell is deactivated/discharged, situation 1 will be unaffected, because can at least make
Use Pcell.This is also consistent with above-mentioned suggestion, it is not necessary to distributes LCH to eNB_M Scell.But when eNB_S Scell is gone
During activation/release, there are following two options to handle and distribute to the LCH of the Scell：
Option B1：In one embodiment, when the LCH eNB_S be mappeding to Scell is deactivated or discharged,
The transmission being mapped to the LCH of the Scell is hung up, until the Scell is activated again.
Option B2：In another embodiment, when the LCH eNB_S be mappeding to Scell is deactivated or is discharged simultaneously
And when at least one movable eNB_S Scell be present, UE continues to send the data of the LCH by the movable Scell,
As shown in step 320 in method 300；When all eNB_S Scell is deactivated or discharged, UE is sent by eNB_M
The data of the LCH, as shown in step 330 in method 300.Also can so as to ensure that the Scell being be mapped to even if LCH is deactivated
Enough have an opportunity the data for sending the LCH.
In order to realize the two options, it may be considered that following two schemes：
Scheme 1：Method 300 is performed automatically by UE according to pre-defined rule
Scheme 2：Method 300 is performed by eNB_M implicit commands UE
The two schemes are considered separately below：
Scheme 1：UE is performed automatically according to pre-defined rule
For implementation 1, R12 needs to define new rule to instruct UE behaviors, as described below：
Support option B1 new rule：
Rule 1.1：If LCH maps, and/Scell being linked to is deactivated/discharges, and UE should hang up the LCH's
Transmission.Because the option is very simple, thus it is no longer discussed further below.Shortcoming is that impacted LCH transmission will occur
Interrupt.
Support option B2 new rule：
Rule 2.1：When the Scell for the eNB_S that LCH is be mapped to is deactivated or is discharged, and it is at least one when exist
During the eNB_S of activity Scell, UE continues through the data that the movable eNB_S sends the LCH；
Rule 2.2：When all eNB_S Scell is deactivated or discharged, UE continues through eNB_M and sends the LCH
Data.
In addition, in the case of the LCH eNB_S be mappeding to Scell is released, the rule that can also be defined as follows
2.3：
Rule 2.3：When the Scell for the eNB_S that LCH is be mapped to is released, disappear to the RRC for discharging the Scell
Breath adds new cell to indicate that the LCH should be by which cell (such as Pcell or Scell)/node (such as eNB_M or eNB_S)
To handle, to avoid UE from obscuring.Further, it is also possible to define when the RRC information that be used to discharging Scell do not provide this information or
The cell that person is added is space-time, and UE knows that the LCH will be by eNB_M processing.
The regular of support option B2 is advantageous in that can ensure when eNB_S Scell becomes deactivation/release will not
There is logic channel hang-up.
Especially, option b 1 can further be simplified to realize C planes and U planes point in R12 by following rule
From：
Rule 2.1：When at least one eNB_S Scell holding activities, UE sent on eNB_S all DRB without by
The influence of eNB_S Scell deactivating operations；
Rule 2.2：If all eNB_S Scell is deactivated/discharged, UE will start to send institute on eNB_M
There are DRB or all LCH hung up handled by eNB_S to transmit.
Rule 2.3：No matter whether eNB_M Scell occur deactivation/activation/release operation, SRB will be on eNB_M
Send.
Scheme 2：ENB_M implicit commands UE performs method 300
For scheme 2, all UE behaviors are controlled by eNB_M entirely.For example, when eNB_S Scell is deactivated, and
ENB_S wants UE when sending the LCH data of correlation on eNB_M, in spite of there is movable eNB_S Scell, above
The new rule of scheme 1 does not all work.In this case, eNB_M can pass through Scell activation/deactivation media interviews controls
(MAC) control unit (CE) is made to explicitly indicate that UE behaviors.
Existing Scell activation/deactivations MAC CE schematic diagram is shown in Fig. 5.As shown in Figure 5, according to 3GPP
In TS 36.321 existing Scell activation/deactivations MAC CE, there is " R " bit to be used after being reserved for.Can be with
" R " bit is redefined to be explicitly indicated UE behaviors.Fig. 6 shows reconfiguring according to embodiment of the present invention
Scell activation/deactivation MAC CE schematic diagram.
As shown in Figure 6, " R "=0 indicates that UE continues to send impacted LCH data on eNB_S.For this feelings
Condition, if the Scell being just deactivated is last, UE will hang up impacted LCH transmission.Because in eNB_
There is no the Scell of activity on S, and UE is not in sending those impacted LCH on eNB_M.
As shown in Figure 6, " R "=1 indicates that UE can send impacted LCH data on eNB_M.For this feelings
Condition, no matter beginning is all sent to those impacted LCH data on eNB_M either with or without the Scell of activity, UE on eNB_S.
In addition, in order to realize C planes and U planar separations, scheme 2 can be further defined as follows：
" R "=0 and have at least one eNB_S Scell be it is movable, then UE continue on eNB_S send DRB data；
" R "=0 and all eNB_S Scell are inactive, then UE will hang up all DRB transmission, because eNB_S is not
Permission sends DRB on eNB_M；
" R "=1 and to have at least one eNB_S Scell be movable, then UE will be hung up by the eNB_S Scell that deactivate
The impacted LCH of processing, because UE can not send DRB on eNB_M.Because there are at least one eNB_S Scell can
To use, and not in sending DRB on eNB_M.
" R "=1 and without eNB_S Scell activity, then UE continue all DRB are sent on eNB_M.
Rank 2：LCH is mapped to a node
For the rank, UE just knows that a LCH will be handled by which node (such as eNB_M or eNB_S).Therefore most
The latter eNB_S Scell are changed into before deactivation, and eNB_S Scell deactivations/activation/release operation will not directly affect
UE UL LCP processes.Therefore the scheme 1 proposed by rank 1 and scheme 2 can change into scheme 1 below ' and scheme
2’：
Scheme 1 '：Method 300 is performed automatically by UE according to pre-defined rule, and there is defined following new rule
Then：
Rule 1 '：If at least one eNB_S Scell are movable, then all LCH for being mapped to eNB_S exist
Send and do not influenceed by eNB_S Scell deactivations/release operation on eNB_S；
Rule 2 '：When all eNB_S Scell are deactivated or discharged, UE temporarily continues transmission on eNB_M and reflected
It is mapped to eNB_S all LCH so that the LCH transmission of eNB_S processing is not suspended.
Scheme 2 '：ENB_M implicit commands UE performs method 300
In scheme 2 ', " R " bit in Scell activation/deactivation MAC CE will be defined as below：
If at least one eNB_S Scell holding activities, then ignore " R " bit；
" R "=0 and all eNB_S Scell are deactivated, then UE temporarily continue to send eNB_S processing on eNB_M
All LCH；
" R "=1 and all eNB_S Scell are deactivated, then UE hang up all LCH being mapped on eNB_S because
ENB_S is not in the LCH sent on eNB_M handled by it.
Rank 2 is very easy to realize C planes and U planar separations：
In rank 2, for scheme 1 ', the new rule that can be defined as follows：
If at least one eNB_S Scell holding activities, then UE will continue to send all DRB on eNB_S；
When all eNB_S Scell are deactivated, UE continues to send all DRB on eNB_M.
In rank 2, for scheme 2 ', " R " bit can be redefined as follows：
If at least one eNB_S Scell holding activities, then ignore " R " bit, and UE continues to send out on eNB_S
Send all DRB；
" R "=0 and all eNB_S Scell are deactivated, then UE temporarily continues to send all DRB on eNB_M；
" R "=1 and all eNB_S Scell are deactivated, then UE hang up all DRB transmission because eNB_S does not allow
DRB is sent on eNB_M.
Fig. 4 shows the block diagram for being used to support the device 400 of dual link according to embodiment of the present invention.Device 400
It can realize in eNB_M or be realized by eNB_M.As shown in figure 4, device 400 includes initialization unit 410, it is configured as
When UE is initially accessed eNB_M, the UE is connected to Pcell or eNB_M to handle current LCH by Pcell or eNB_M.
Device 400 also includes indicating member 420, and it is configured as indicating that LCH will be by eNB_M still to the UE by special RRC message
ENB_S processing will be by Pcell or Scell processing.
Fig. 5 shows the schematic diagram for being used to support another device 500 of dual link according to embodiment of the present invention.Device
500 can for example realize in eNB_M or be realized by eNB_M.As shown in figure 5, device 500 includes dual link enabling unit
510, it is configured such that LCH data only by a Pcell or Scell processing or only by an eNB_M or eNB_S
Processing.Device 500 also includes cell change processing unit 520, and it is configured as the Scell for the eNB_S that the LCH is be mapped to
When being deactivated or discharge, and at least another movable eNB_S Scell be present, sent by the movable eNB_S
The data of the LCH, it is additionally configured to, when all eNB_S Scell is deactivated or discharged, this be sent by eNB_M
LCH data.
In the disclosure, according to the linguistic context using the term, term " base station " can refer to the overlay area of base station and/or right
The base station or base station sub-system that the overlay area is serviced.
In addition, in the disclosure, as described in above in relation to method 300, the definition for " R " bit is a kind of exemplary
Description, those skilled in the art can carry out opposite or other different definition to it completely, as long as can clearly refer to
Show UE behavior.
Utilize the scheme that dual link is supported based on carrier aggregation suggested in the present invention, it is possible to increase cell dispatching efficiency
And realize C planes and U planar separations.
Here, method disclosed herein is described referring to the drawings.It should be appreciated, however, that shown in accompanying drawing and
Sequence of steps described in this description is only schematical, without departing from the scope of the claims, these sides
Method step and/or action can in a different order be performed and be not limited to shown in accompanying drawing and described in the specification
Particular order.
In one or more exemplary designs, this can be realized with hardware, software, firmware or their any combination
The described function of application.If realized with software, can be stored the function as one or more instruction or code
On a computer-readable medium, transmit or as one or more instructions on computer-readable medium or code.Calculate
Machine computer-readable recording medium includes computer-readable storage medium and communication media, and wherein communication media includes contributing to computer program from one
Place is delivered to the arbitrary medium of another place.Storage medium can be that universal or special computer is addressable any available
Medium.This computer-readable medium can include, for example, but not limited to, RAM, ROM, EEPROM, CD-ROM or other CD
Storage device, disk storage equipment or other magnetic storage apparatus, either available for universal or special computer or it is general or
The form of the addressable instruction of application specific processor or data structure come code modules desired by carrying or storing it is any its
Its medium.It is also, any to connect the computer-readable medium that be known as.If for example, software be using coaxial cable,
The wireless technology of optical fiber cable, twisted-pair feeder, Digital Subscriber Line (DSL) or such as infrared ray, radio and microwave etc is come from net
Stand, server or other remote sources transmission, then coaxial cable, optical fiber cable, twisted-pair feeder, DSL or such as infrared ray, wireless
The wireless technology of electricity and microwave etc is also included within the definition of medium.
General processor, digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate can be used
Array (FPGA) or other PLDs, discrete gate or transistor logic, discrete hardware components or for performing sheet
Any combination of function described in text come realize or perform various exemplary logical blocks with reference to described by the disclosure, module and
Circuit.General processor can be microprocessor, or, processor can also be any conventional processor, controller, micro-control
Device or state machine processed.Processor can also be embodied as the combination of computing device, for example, DSP and microprocessor combine, are multiple
The combination of microprocessor, one or more microprocessors and DSP core, or any other such structure.
Those of ordinary skill in the art are also understood that the various exemplary logics described with reference to embodiments herein
Block, module, circuit and algorithm steps can be implemented as electronic hardware, computer software or combination.In order to understand earth's surface
Show this interchangeability between hardware and software, various exemplary part, block, module, circuit and steps are enclosed above
General description has been carried out around its function.Hardware is implemented as this function and is also implemented as software, depending on specific
Using and apply design constraint over the whole system.Those skilled in the art can be directed to every kind of application-specific, to become
Logical mode realizes described function, still, this to realize that decision-making should not be interpreted as causing a departure from the scope of this disclosure.
The above description of the disclosure is used to enable any those of ordinary skill of this area to realize or using the present invention.It is right
For those of ordinary skill in the art, the various modifications of the disclosure will be apparent from, and generality defined herein
Principle can also be applied to other deformations in the case of without deviating from the spirit and scope of the disclosed invention.Therefore, the present invention simultaneously
Example as described herein and design are not limited to, but it is consistent with the widest scope of principle disclosed herein and novel features.
Claims (19)
1. a kind of be used to support doubly-linked in the cordless communication network including a macro base station and one or more small-cell base stations
The method connect, including：
Initialization step, when user equipment (UE) is initially accessed macro base station, the UE is connected to main plot Pcell or macro base station
To handle current logic channel LCH by Pcell or macro base station, wherein Pcell is associated with macro base station, is operated in principal component
On carrier wave；
Step is indicated, controls RRC information to indicate that LCH will be by macro base station or small-cell base station to the UE by dedicated radio resources
Processing will be operated in auxiliary component carrier by Pcell or secondary cell Scell processing, wherein Scell.
2. the method as described in claim 1, the wherein RRC information are disappeared for the RRC of radio bearer RB configuration/reconfigurations
Breath, and the instruction step include adding new cell to the RRC information indicate the RB be handled by Pcell or by
Scell processing indicates that the RB is to be handled by macro base station or handled by small-cell base station.
3. method as claimed in claim 2, the wherein cell are handled by Pcell for empty instruction RB or indicate the RB by grand
Base station is handled.
4. the method as described in claim 1, the wherein RRC information are the RRC informations for Scell configuration/reconfigurations, and
The instruction step is included when carrying out Scell configuration/reconfigurations, adds new cell to the RRC information so that indicated to UE will be by
The RB/LCH of the Scell processing of the configuration/reconfiguration.
5. method as claimed in claim 4, wherein the instruction step are included as configuration/reconfiguration RB/LCH, RB/ is updated
LCH configuration/reconfigurations message with add the RB/LCH of new cell configuration/reconfiguration to indicate be by Pcell handle or
By Scell processing.
6. method as claimed in claim 4, wherein the instruction step are included as configuration/reconfiguration RB/LCH, Scell is used
Configuration/reconfiguration RRC information indicates that the RB/LCH of institute configuration/reconfiguration is handled by macro base station or by cell base to UE
Stand processing.
7. the method as described in claim 1, wherein the instruction step include defining new special RRC message to indicate to be used for locate
Each RB/LCH Pcell or Scell are managed, or indicates the macro base station or small-cell base station for handling each RB/LCH.
8. the method as described in claim 1, the wherein RRC information include the RRC information for Scell configuration/reconfigurations, its
In the instruction step include new cell is inserted into the RRC information to indicate whether the Scell belongs to small-cell base station.
9. the method as described in claim 1, in addition to：
When the Scell for the small-cell base station that the LCH is be mapped to is deactivated or is discharged, and exist in the cordless communication network
During at least Scell of another movable small-cell base station, the data of the LCH are sent by the movable small-cell base station；
When the Scell of all small-cell base stations is deactivated or discharged, the data of the LCH are sent by macro base station.
10. a kind of be used to support doubly-linked in the cordless communication network including a macro base station and one or more small-cell base stations
The method connect, including：
So that logic channel LCH data are only by a main plot Pcell or secondary cell Scell processing or grand only by one
Base station or small-cell base station processing；
When the Scell for the small-cell base station that the LCH is be mapped to is deactivated or is discharged, and exist in the cordless communication network
During at least Scell of another movable small-cell base station, the data of the LCH are sent by the movable small-cell base station；
When the Scell of all small-cell base stations is deactivated or discharged, the data of the LCH are sent by macro base station.
11. method as claimed in claim 10, wherein this method are performed by UE according to pre-defined rule.
12. method as claimed in claim 10, wherein when the Scell of the LCH small-cell base stations be mappeding to is released,
To for discharge the RRC information of the Scell add new cell indicate the LCH will by Pcell or Scell handling or
Indicate that the LCH will be handled by macro base station or small-cell base station.
13. a kind of be used to support doubly-linked in the cordless communication network including a macro base station and one or more small-cell base stations
The method connect, including：
So that logic channel LCH data are only by a main plot Pcell or secondary cell Scell processing or grand only by one
Base station or small-cell base station processing；
When the Scell for the small-cell base station that the LCH is be mapped to is deactivated, the transmission of the LCH is hung up until the Scell quilts
Reactivate.
14. a kind of be used to support doubly-linked in the cordless communication network including a macro base station and one or more small-cell base stations
The method connect, including：
So that logic channel LCH data are only by a main plot Pcell or secondary cell Scell processing or grand only by one
Base station or small-cell base station processing；
When the Scell of small-cell base station is deactivated, macro base station is by setting " R " in Scell activation/deactivation MAC CE
Bit indicates UE behaviors.
15. method as claimed in claim 14, wherein " R "=0 indicates that UE continues to send on small-cell base station to be gone by Scell
The LCH influenceed data are activated, " R "=1 indicates that UE sends the LCH influenceed by Scell deactivations data on macro base station.
16. method as claimed in claim 14, wherein when " R "=0 and having the Scell of at least one small-cell base station movable
When, instruction UE continues to send Data Radio Bearer DRB data on small-cell base station；When " R "=0 and all small-cell base stations
When Scell is inactive, instruction UE hangs up all DRB transmission；When " R "=1 and have at least one small-cell base station Scell live
When dynamic, instruction UE hangs up the LCH handled by the Scell of the small-cell base station deactivated；When " R "=1 and there is no small-cell base station
Scell activities when, instruction UE continue all DRB are sent on macro base station.
17. method as claimed in claim 14, wherein if the Scell holding activities of at least one small-cell base station, then
Ignore " R " bit；When the Scell of " R "=0 and all small-cell base stations is inactive, UE continues to send small on macro base station
All LCH of cell base station processing；When the Scell of " R "=1 and all small-cell base stations is inactive, UE hangs up and is mapped to
All LCH on small-cell base station.
18. a kind of be used to support doubly-linked in the cordless communication network including a macro base station and one or more small-cell base stations
The device connect, including：
Initialization unit, it is configured as, when user equipment (UE) is initially accessed macro base station, the UE being connected into main plot Pcell
Either for macro base station to handle current logic channel LCH by Pcell or macro base station, wherein Pcell is associated with macro base station,
It is operated in principal component carrier wave；
Indicating member, it is configured as controlling RRC information to indicate that LCH will be by macro base station still to the UE by dedicated radio resources
Small-cell base station processing will be operated in auxiliary component carrier by Pcell or secondary cell Scell processing, wherein Scell.
19. a kind of be used to support doubly-linked in the cordless communication network including a macro base station and one or more small-cell base stations
The device connect, including：
Dual link enabling unit, it is configured such that logic channel LCH data only by a main plot Pcell or auxiliary
Cell Scell processing is only handled by a macro base station or small-cell base station；And
Cell change processing unit, it is configured as the Scell for the small-cell base station that the LCH is be mapped to and is deactivated or releases
When putting, and at least Scell of another movable small-cell base station in the cordless communication network be present, pass through the small of the activity
Cell base station sends the data of the LCH, is additionally configured to when the Scell of all small-cell base stations is deactivated or discharged
When, the data of the LCH are sent by macro base station.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310116980.7A CN104105220B (en) | 2013-04-03 | 2013-04-03 | The method and apparatus for supporting dual link |
| PCT/IB2014/000795 WO2014162203A2 (en) | 2013-04-03 | 2014-04-03 | Method and apparatus for supporting dual connectivity |
| EP14734546.6A EP2982160A2 (en) | 2013-04-03 | 2014-04-03 | Method and apparatus for supporting dual connectivity |
| JP2016505895A JP2016518062A (en) | 2013-04-03 | 2014-04-03 | Method and apparatus for supporting dual connections |
| KR1020157031552A KR20150138359A (en) | 2013-04-03 | 2014-04-03 | Method and apparatus for supporting dual connectivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310116980.7A CN104105220B (en) | 2013-04-03 | 2013-04-03 | The method and apparatus for supporting dual link |
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| Publication Number | Publication Date |
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| CN104105220A CN104105220A (en) | 2014-10-15 |
| CN104105220B true CN104105220B (en) | 2018-03-02 |
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| EP (1) | EP2982160A2 (en) |
| JP (1) | JP2016518062A (en) |
| KR (1) | KR20150138359A (en) |
| CN (1) | CN104105220B (en) |
| WO (1) | WO2014162203A2 (en) |
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|---|---|---|---|---|
| RU2754579C1 (en) * | 2018-04-06 | 2021-09-03 | Телефонактиеболагет Лм Эрикссон (Пабл) | Communication resource configuration for dual connection |
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| CN108631980B (en) * | 2017-03-24 | 2021-03-05 | 电信科学技术研究院 | Data transmission method, terminal, network side device and computer readable storage medium |
| MX2019015300A (en) * | 2017-06-16 | 2020-07-20 | Nokia Technologies Oy | Communication apparatus, method and computer program. |
| WO2019119270A1 (en) * | 2017-12-19 | 2019-06-27 | Oppo广东移动通信有限公司 | Control method and device for secondary cell, and computer storage medium |
| CN112584550B (en) * | 2019-09-27 | 2023-12-15 | 华为技术有限公司 | Dual-connection management method and communication device |
| CN111372305B (en) * | 2020-03-12 | 2024-01-26 | Oppo广东移动通信有限公司 | Method, device and equipment for switching connection modes |
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| GB2492948A (en) * | 2011-07-04 | 2013-01-23 | Nec Corp | Allowing a mobile communication device to use a secondary component carrier if it is within a secondary cell of a base station |
| CN105357773B (en) * | 2011-07-15 | 2020-06-02 | 华为技术有限公司 | Wireless broadband communication method, device and system |
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2013
- 2013-04-03 CN CN201310116980.7A patent/CN104105220B/en active Active
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- 2014-04-03 WO PCT/IB2014/000795 patent/WO2014162203A2/en active Application Filing
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| Consideration on SCell RLM in Carrier Aggregation;ZTE;《3GPP TSG-RAN WG4 meeting AH#4，R4-103527》;20101015;第2节 * |
| Discussion on dual connectivity and requirements;Alcatel-Lucent, Alcatel-Lucent Shanghai Bell;《3GPP TSG RAN WG2 Meeting #81,R2-130520》;20130201;全文 * |
| Discussion on Protocol Stack Support in Small Cell eNB;Research In Motion, UK Limited;《3GPP TSG RAN WG2 Meeting#81,R2-130068》;20130201;第1页第1节第1段，第2.1节第1段，第2.1节第4段，图1-2 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2754579C1 (en) * | 2018-04-06 | 2021-09-03 | Телефонактиеболагет Лм Эрикссон (Пабл) | Communication resource configuration for dual connection |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20150138359A (en) | 2015-12-09 |
| JP2016518062A (en) | 2016-06-20 |
| WO2014162203A2 (en) | 2014-10-09 |
| WO2014162203A3 (en) | 2015-01-29 |
| CN104105220A (en) | 2014-10-15 |
| EP2982160A2 (en) | 2016-02-10 |
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