CN104105220A - Method and device supporting double connection - Google Patents
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- H—ELECTRICITY
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- H—ELECTRICITY
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- H04L5/00—Arrangements affording multiple use of the transmission path
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- 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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Abstract
The invention discloses a method and a device which support double connection. The method comprises an initialization process and an indication process. The initialization process comprises a step of connecting UE to Pcell in order to process the current LCH through the Pcell, wherein the Pcell is related to a macro base station and work is on the component carrier. The indication process comprises a step of indicating the UE that the LCH is processed by the macro base station or by a small cell base station or by the Pcell or the Scell through the dedicated RRC information, wherein the Scell work is on the auxiliary component carrier.
Description
Technical field
The present invention generally relates to wireless communication field, more specifically, relates to a kind of method and apparatus of supporting dual link.
Background technology
In the cordless communication network of isomery, conventionally have macro base station that coverage is larger and the less micro-base station of coverage comparatively speaking.Fig. 1 shows the schematic diagram of cordless communication network 100 of the prior art.As shown in Figure 1, in cordless communication network 100, comprise a macro base station 110, it provides the basic network coverage 120, and one or more base stations, small-cell (Small Cell) 132,134,136 and 138 with smaller power, it provides respectively the relatively little network coverage 142,144,146 and 148 (marking with backslash in figure).Subscriber equipment (UE) 150 in common coverage in macro base station and small-cell base station can establish a communications link with macro base station 110 and corresponding small-cell base station (as small-cell base station 134) simultaneously.
Current, about small-cell, strengthen research project (third generation partner program (3GPP) Long Term Evolution (LTE) version 12 (R12) research project (the SI:RP-121800)) approval in RAN 58 of involved high-rise related content.An important goal of this SI is that research contents and target that it is main are about " dual link " and " by C (control) plane and U (user) planar separation in different nodes ":
(1) determine and assess the benefit that UE and the macrocell of being served by identical or different carrier wave and small-cell have dual link, and this dual link is feasible and useful in which situation;
(2) determine and assessment for the possible framework of feasible dual link situation and protocol enhancement so that on the impact of core net minimum (if feasible), comprise: the general structure of control plane (C plane) and user plane (U plane) and their relations each other, for example in different nodes, support C plane and U plane, the termination of different agreement layer, etc.
The possible solution of a kind of support " dual link " function is based on carrier aggregation concept, wherein macrocell is as main plot (Primary Cell, be called for short Pcell), be operated on principal component carrier wave, and small-cell is as auxiliary community (Secondary Cell, be called for short Scell), be operated on auxiliary component carrier.The most important benefit of this conception of species is the situation that there will not be Pcell to change, thereby will can not trigger handoff procedure in UE rests on macrocell coverage area time.And when UE moves to small-cell coverage, this small-cell can be added as Scell.Generally, macro base station (eNB_M) and small-cell base station (eNB_S) can be controlled respectively a plurality of carrier waves.This expression will have a Pcell, and eNB_M can control zero/mono-/a plurality of Scell, and eNB_S also can control zero/mono-/a plurality of Scell.
Based on this " dual link ", in this SI, advised the another feature about C plane and U planar separation.This is based on following consideration: small-cell can be positioned at more on high frequency band, as 3.5G, therefore in macrocell, transmit important signaling (as physical layer (PHY) signaling, Radio Resource are controlled (RRC) signaling) and will obtain higher reliability, thus more favourable.Therefore on different districts, support that RRC signaling and sub data transmission defection are highly beneficial.Consider current CA (carrier aggregation) standard, in order to support this separation, crucial impact is to the relevant operation of the priority of logical channels of UE side (LCP), in the Chinese patent application of submitting to, denomination of invention is " realizing the control plane method separated with user plane based on carrier aggregation ", is advised as the applicant on January 18th, 2013.
In addition, most company all expresses support for " dual link ".A kind of solution of supporting the welcome of this feature and extensively being advised is based on CA concept.About C plane and U planar separation, although still do not have clear and definite decision whether to support this feature, yet its benefit by numerous company, be familiar with, especially aspect mobile management process.And for fear of the impact of imperfect interface on systematic function between different base station, many companies all built view eNB_S should carry out scheduling operation to control its own Tx/Rx, dispatch and rely on eNB_M.This is illustrated in the scheduling process that may have two dispersions in eNB_M and eNB_S and works respectively simultaneously.In order to realize this situation, also advise that the data of a service or a logic channel (LCH) or a radio bearer (RB) should only send on a node.This is similar to the concept of C plane and U planar separation.For this conception of species, the data of Signaling Radio Bearer (SRB) will only send on eNB_M, and the data of Data Radio Bearer (DRB) will only send on eNB_S.Therefore we can find out, the concept of this C plane and U planar separation is very favorable for realizing higher small-cell dispatching efficiency.In short, it is very favorable being supported in the suggestion that sends the data of a service/LCH/RB on a node, and this will help raising small-cell dispatching efficiency.Discuss herein and advised about how realizing the scheme of this suggestion.
Summary of the invention
For above problem, the invention provides several concrete schemes of concentrating the data can guarantee a service/RB/LCH only to send on Yi Ge community/node, and provide in the situation that the data of a service/RB/LCH only send impact how to process the behavior of auxiliary community on Yi Ge community/node.
According to an aspect of the present invention, provide a kind of for support the method for dual link at the cordless communication network that comprises a macro base station and one or more small-cell base stations, comprise: initialization step, when subscriber equipment (UE) initially accesses macro base station, this UE is connected to main plot (Pcell) or macro base station to process current logic channel (LCH) by Pcell or macro base station, wherein Pcell is associated with macro base station, is operated on principal component carrier wave; Indication step, controls (RRC) message by dedicated radio resources and will be processed or will be processed by Pcell or auxiliary community (Scell) by macro base station or small-cell base station to this UE indication LCH, and wherein Scell is operated on auxiliary component carrier.
According to another aspect of the present invention, provide a kind of and comprised the method for dual link for supporting at the cordless communication network that comprises a macro base station and one or more small-cell base stations: made the data of a logic channel (LCH) only by Huo Fu community, a main plot (Pcell) (Scell), process or only by a macro base station or small-cell base station, be processed; The Scell of the small-cell base station being mapped to as this LCH is deactivated or discharges, and while there is the Scell of another movable small-cell base station at least in this cordless communication network, sends the data of this LCH by this movable small-cell base station; When the Scell of all small-cell base stations is deactivated or discharges, by macro base station, send the data of this LCH.
According to another aspect of the present invention, provide a kind of and comprised the method for dual link for supporting at the cordless communication network that comprises a macro base station and one or more small-cell base stations: made the data of a logic channel (LCH) only by Huo Fu community, a main plot (Pcell) (Scell), process or only by a macro base station or small-cell base station, be processed; When the Scell of the small-cell base station being mapped to as this LCH is deactivated, hang up this LCH transmission until this Scell be reactivated.
According to another aspect of the present invention, provide a kind of and comprised the method for dual link for supporting at the cordless communication network that comprises a macro base station and one or more small-cell base stations: made the data of a logic channel (LCH) only by Huo Fu community, a main plot (Pcell) (Scell), process or only by a macro base station or small-cell base station, be processed; When the Scell of small-cell base station is deactivated, macro base station is indicated UE behavior by " R " bit arranging in Scell activation/deactivation MAC CE.
According to another aspect of the present invention, provide a kind of for support the device of dual link at the cordless communication network that comprises a macro base station and one or more small-cell base stations, comprise: initialization unit, it is configured to when subscriber equipment (UE) initially accesses macro base station, this UE is connected to main plot (Pcell) or macro base station to process current logic channel (LCH) by Pcell or macro base station, wherein Pcell is associated with macro base station, is operated on principal component carrier wave; Indicating member, it is configured to control (RRC) message by dedicated radio resources and will is processed or will be processed by Pcell or auxiliary community (Scell) by macro base station or small-cell base station to this UE indication LCH, and wherein Scell is operated on auxiliary component carrier.
According to another aspect of the present invention, provide a kind of for support the device of dual link at the cordless communication network that comprises a macro base station and one or more small-cell base stations, comprise: dual link enables unit, its data that are configured such that a logic channel (LCH) are only processed or only by a macro base station or small-cell base station, are processed by Huo Fu community, a main plot (Pcell) (Scell); And cell change processing unit, its Scell that is configured to the small-cell base station that is mapped to as this LCH is deactivated or discharges, and while there is the Scell of another movable small-cell base station at least in this cordless communication network, by this movable small-cell base station, send the data of this LCH, also be configured to, when the Scell of all small-cell base stations is deactivated or discharges, by macro base station, send the data of this LCH.
Utilize the solution of the present invention, can improve small-cell dispatching efficiency and realize C plane and U planar separation.
Accompanying drawing explanation
After the description below with reference to the given the specific embodiment of the present invention of following accompanying drawing, will understand better the present invention, and other objects of the present invention, details, feature and advantage will become more apparent.In the accompanying drawings:
Fig. 1 shows the schematic diagram of the network architecture of the prior art;
Fig. 2 show according to embodiment of the present invention for supporting the flow chart of the method for dual link;
Fig. 3 show according to embodiment of the present invention for supporting the flow chart of the other method of dual link;
Fig. 4 show according to embodiment of the present invention for supporting the block diagram of the device of dual link;
Fig. 5 show according to embodiment of the present invention for supporting the block diagram of another device of dual link;
Fig. 6 shows the schematic diagram of Scell activation/deactivation MAC CE in prior art; And
Fig. 7 shows according to the schematic diagram of the Scell activation/deactivation MAC CE reconfiguring of embodiment of the present invention.
Wherein, in institute's drawings attached, same or analogous label represents to have identical, similar or corresponding feature or function.
Embodiment
Preferred implementation of the present disclosure is described below with reference to accompanying drawings in more detail.Although shown preferred implementation of the present disclosure in accompanying drawing, yet should be appreciated that, can realize the disclosure and the execution mode that should do not set forth limits here with various forms.On the contrary, it is in order to make the disclosure more thorough and complete that these execution modes are provided, and can by the scope of the present disclosure complete convey to those skilled in the art.
Fig. 2 show according to embodiment of the present invention for supporting the flow chart of the method 200 of dual link.As shown in Figure 2, method 200 comprises initialization step 210, wherein when UE initially accesses macro base station eNB_M, this UE is connected to Pcell or eNB_M to process current LCH by Pcell or eNB_M.Wherein, Pcell is associated with eNB_M, is operated on principal component carrier wave.
Next, in indication step 220, by special RRC message, to UE indication LCH, to be processed by eNB_M or eNB_S, or indicate this LCH to be processed by Pcell or Scell.
As mentioned above, in order to support dual link, it is very important with the data that guarantee a LCH, only sending on Yi Ge community/node, this with for obtaining the C plane of higher dispatching efficiency and the concept of U planar separation is consistent.About how to indicate by which LCH of which community/node processing to UE, can there be following three kinds of options:
Option A1: indicate this RB/LCH in which community (Pcell or Scell) above to send or by which node (eNB_M or eNB_S) to be sent to UE by RB configuration/reconfiguration RRC message;
Option A2: indicate this Scell will process which service/RB/LCH to UE by Scell configuration/reconfiguration RRC message;
Option A3: define new RRC message to configure each service/RB/LCH, come Pcell or Scell for the treatment of each service/RB/LCH to UE indication.
This three kinds of options are below specifically discussed, and are discussed how to realize C plane and U planar separation based on these three kinds of options.
about option A1
For option A1, when configuration/reconfiguration RB, by add new cell to RB configuration/reconfiguration message, indicate Target cell (as Pcell or Scell) or the destination node (as eNB_M or eNB_S) of this RB transmission.For the definition of this new cell, have following two sub-options to consider:
(1)
sub-option A1.1: this new cell indicates the RB of this configuration/reconfiguration to be processed or processed by Scell by Pcell.
In one embodiment, this new cell comprises the index of Pcell or Scell.The length of the cell that this is new depends on the quantity of supported Pcell and Scell.For example, when network 100 is supported a Pcell and 7 Scell, the length of this cell is 3 bits.For this situation, for example with index 000, represent Pcell, index 001-111 represents respectively 7 supported Scell.
Further, this new cell is that the empty RB of this configuration/reconfiguration that indicates is processed by Pcell.
(2)
sub-option A1.2: this new cell indicates the RB of this configuration/reconfiguration to be processed or processed by eNB_S by eNB_M.
In one embodiment, this new cell comprises the index of eNB_M or eNB_S.The length of the cell that this is new depends on the quantity of the eNB_S that UE can connect simultaneously.For example, when only supporting that an eNB_M is connected with a UE with an eNB_S simultaneously, this cell needs 1 bit.If while having an eNB_M and maximum 3 eNB_S to be connected to a UE simultaneously, this cell needs 2 bits.For this situation, for example with index 00, represent eNB_M, index 01-11 represents respectively three eNB_S.
Further, this new cell is that the empty RB of this configuration/reconfiguration that indicates is processed by eNB_M.
Can find out, the difference of sub-option A1.1 and sub-option A1.2 is only that the granularity of processing unit of the RB/LCH that cell is indicated is different:
Sub-option A1.1 has clearly indicated the concrete community (as Pcell or Scell) of processing this RB/LCH, and also implies and indicated this RB/LCH for example, to be processed by which base station (eNB_M or eNB_S) about the information of Pcell or Scell.
about option A2
For option A2, when configuration/reconfiguration Scell, eNB_M carrys out the RB/LCH that will be processed by the Scell of this configuration/reconfiguration to UE indication by add new cell to Scell configuration/reconfiguration RRC message.For example, can indicate the Scell of institute's configuration/reconfiguration can process which LCH to UE.If the Scell of this configuration/reconfiguration belongs to a certain eNB_S, UE knows which logic channel will be processed by this eNB_S very much.Its effect is similar to the sub-option A1.1 advising above.For example, when initialization step (step 210) is set up first Scell afterwards, whether eNB_M can indicate some current LCH will be processed by this Scell to UE.If so the LCH, being associated will no longer be processed by Pcell.
In addition,, when further configuration/reconfiguration RB/LCH, can consider that following two seed options process these new LCH:
(1)
sub-option A2.1: upgrade RB/LCH configuration/reconfiguration message and to add new cell, indicate the RB/LCH of institute's configuration/reconfiguration to process or processed by Scell by Pcell.Its concrete indicating means is similar to above-mentioned sub-option A1.1.
(2) sub-option A2.2: the RB/LCH by Scell configuration/reconfiguration RRC message to UE indication institute configuration/reconfiguration is processed or processed by eNB_S by eNB_M.Before UE receives this Scell configuration/reconfiguration RRC message, the RB/LCH of institute's configuration/reconfiguration is processed by Pcell default, described in step 210.
Compare with sub-option A2.1, sub-option A2.2 will not affect RB configuration RRC process.
about option A3
About option A3, in R12, define new special RRC message to indicate Pcell or the Scell for the treatment of each RB/LCH, or indication is for the treatment of eNB_M or the eNB_S of each RB/LCH.。Before receiving this new RRC message, for the RB of new configuration/reconfiguration, UE knows that it is processed by Pcell default.
Can find out, option A3 has identical effect with option A1 and option A2, and cost is to define new special RRC message.Therefore below, mainly pay close attention to option A1 and option A2.
By above-mentioned for supporting the method 200 of dual link, the data that guaranteed a LCH only send or only by a node (as eNB_M or eNB_S), are sent on Yi Ge community (as Pcell or Scell), thereby have realized the separated of C plane and U plane.Certainly, these processes can realize certain LCH/RB and processed by a plurality of communities or a plurality of node.
In one embodiment, option A1 and option A2 can simplify according to current SI, to advise supporting C plane and U planar separation as follows:
For option A1, when SRB sets up, for RB process of establishing, do not upgrade, SRB is processed by Pcell or eNB_M default.And when DRB sets up, will use new RB process of establishing and this new cell by relevant with eNB_S.That is, advantageously chooser option A1.2 will be processed by eNB_S so that UE can know DRB.
For option A2, before adding the new Scell that belongs to eNB_S, all current LCH are processed by eNB_M default.When foundation belongs to the Scell of eNB_S, should indicate this new Scell will process which DRB.And when configuration/reconfiguration belongs to the Scell of eNB_M, will not need this new cell and also needn't indicate this new Scell will process which LCH.
In addition, in R12, if specify SRB only to be processed by eNB_M, DRB is only processed by eNB_S, and UE only needs to know whether the Scell junior one active state of eNB_S so.If had, the behavior that UE carries out appointment is so that DRB will only be processed by eNB_S.If not, the SRB/DRB of all current configurations will be processed by eNB_M.
Wherein, in order to allow UE know that at least one Scell belongs to eNB_S, can indicate the Scell of institute's configuration/reconfiguration whether to belong to eNB_S by add a new cell in Scell configuration/reconfiguration RRC message.Thereby alternatively, there is following option A3 ' to support C plane and U planar separation.
Option A3 ': insert a new cell and indicate the Scell of institute's configuration/reconfiguration whether to belong to eNB_S in Scell configuration/reconfiguration RRC message.
In sum, option A1/A2/A3 can realize when supporting dual link in R12 a service/RB/LCH only You Yige community/node process to improve the target of dispatching efficiency, and can easily support C plane and U planar separation based on these options.
Fig. 3 show according to embodiment of the present invention for supporting the flow chart of the other method 300 of dual link.Method 300 for be only after You Yige community/node processing, how to tackle the impact of Scell operation (as Scell activation/deactivation/release) in the data that guaranteed a LCH.Wherein, the data of a LCH only You Yige community/node processing can realize by any in above-mentioned option A1, A2, A3, but the present invention is not limited thereto, any data that can guarantee a LCH only You Yige community/node processing scheme all within the scope of the invention.Method 300 comprises step 310, wherein makes the data of a LCH only by a Pcell or Scell, be processed or only by an eNB_M or eNB_S, be processed.
In the data that guarantee a LCH, only during You Yige community/node processing, UE clearly knows each RB/LCH is by which community/node processing.According to the concept of carrier aggregation, always maintenance activity of Pcell, therefore by Pcell or the LCH that processed by eNB_M by unaffected, and because Scell can be for different situations and dynamically deexcitation/activations/release, so these Scell operate and will affect its handled LCH.To the major effect of UE behavior in up link (UL) LCP process.
According to service/RB/LCH, by community (as Pcell or Scell), process or processed by node (as eNB_M or eNB_S).Here, process and also can be referred to as mapping or link, it refers to that the processing unit of LCH is community (as Pcell or Scell) or node (as eNB_M or eNB_S).Therefore with following two processing units that granularity rank is specified LCH:
Rank 1: specify the concrete community for the treatment of LCH, as the Scell of the Scell of Pcell, eNB_M or eNB_S.This can realize by the option A1+ option A1.1 that advises above or option A2 or option A3.
Rank 2: specify the concrete node for the treatment of LCH, as eNB_M or eNB_S.This can realize by the option A1+ option A1.2 that advises above or option A2 or option A3.
From high-rise viewpoint, no matter be in which rank, in R12, should be as the UL LCP process of giving a definition new, it has contained two kinds of situations:
Situation 1:UE carries out the LCP process that R10 defines in the LCH being processed by eNB_M
Situation 2:UE carries out the LCP process that R10 defines in the LCH being processed by eNB_S
Below according to these two ranks, UE behavior is discussed respectively, as follows:
rank 1:LCH is clearly mapped to a concrete community
For this rank, UE most clearly knows that a LCH will be processed by which community (Pcell or eNB_M Scell or eNB_S Scell).When the Scell of eNB_M is deactivated/discharges, situation 1 is by unaffected, because at least can use Pcell.This is also consistent with above-mentioned suggestion, does not need to distribute LCH to the Scell of eNB_M.But when the Scell of eNB_S is deactivated/discharges, have following two kinds of options to process the LCH that distributes to this Scell:
Option B1: in one embodiment, when the Scell of the eNB_S being mapped to as LCH is deactivated or discharges, hang up and be mapped to the transmission to the LCH of this Scell, until this Scell is activated again.
Option B2: in another embodiment, when the Scell of the eNB_S being mapped to as LCH is deactivated or discharges and have the Scell of at least one movable eNB_S, UE continues to send the data of this LCH by this movable Scell, as shown in step 320 in method 300; When the Scell of all eNB_S is deactivated or discharges, UE sends the data of this LCH by eNB_M, as shown in step 330 in method 300.Even if thereby guarantee that the Scell that LCH is mapped to is deactivated the data that also can have an opportunity to send this LCH.
In order to realize this two options, can consider following two schemes:
Scheme 1: method 300 is automatically performed according to predefined rule by UE
Scheme 2: method 300 is carried out by eNB_M implicit commands UE
Consider respectively this two schemes below:
Scheme 1:UE automatically performs according to predefined rule
For implementation 1, R12 need to define new rule to instruct UE behavior, as described below:
the new regulation of support option B1:
Rule 1.1: if the Scell that LCH shone upon/is linked to is deactivated/discharges, UE should hang up the transmission of this LCH.Because this option is very simple, therefore no longer further discuss below.Shortcoming is that affected LCH transmission will there will be interruption.
the new regulation of support option B2:
Rule 2.1: the Scell of the eNB_S being mapped to as LCH is deactivated or discharges, and when there is the Scell of at least one movable eNB_S, UE continuation sends the data of this LCH by this movable eNB_S;
Rule 2.2: when the Scell of all eNB_S is deactivated or discharges, UE continues to send by eNB_M the data of this LCH.
In addition, the d/d situation of the Scell of the eNB_S being mapped to for LCH, the rule 2.3 that can also be defined as follows:
Rule 2.3: when the Scell of the eNB_S being mapped to as LCH is released, to adding new cell and indicate this LCH to be processed by which community (as Pcell or Scell)/node (as eNB_M or eNB_S) for discharging the RRC message of this Scell, to avoid UE to obscure.In addition, can also define when for discharge that the RRC message of Scell does not provide this information or the cell that adds when empty, UE knows that this LCH will be processed by eNB_M.
The Scell that the regular benefit of support option B2 is at eNB_S can guarantee not have logic channel and hang up while becoming deexcitation/release.
Especially, option b 1 can further simplify in R12, to realize C plane and U planar separation by following rule:
Rule 2.1: when the Scell of at least one eNB_S maintenance activity, UE sends all DRB and is not subject to the impact of eNB_S Scell deactivating operation on eNB_S;
Rule 2.2: if the Scell of all eNB_S is deactivated/discharges, UE sends beginning all DRB or hangs up the handled all LCH transmission of eNB_S on eNB_M.
Rule 2.3: no matter whether eNB_M Scell deexcitation/activation/releasing operation occurs, SRB will send on eNB_M.
Scheme 2:eNB_M implicit commands UE carrys out manner of execution 300
For scheme 2, all UE behaviors are controlled by eNB_M entirely.For example, when the Scell of eNB_S is deactivated, and eNB_S is while wanting UE to send the data of relevant LCH on eNB_M, no matter whether have movable eNB_S Scell, the new regulation of scheme 1 is above all inoperative.For this situation, eNB_M can control (MAC) control unit (CE) by the media interviews of Scell activation/deactivation and clearly indicate UE behavior.
The schematic diagram of existing Scell activation/deactivation MAC CE has been shown in Fig. 5.As shown in Figure 5, according in the existing Scell activation/deactivation MAC CE of 3GPP TS 36.321, there is " R " bit to be reserved for later use.Can redefine clearly to indicate UE behavior to this " R " bit.Fig. 6 shows according to the schematic diagram of the Scell activation/deactivation MAC CE reconfiguring of embodiment of the present invention.
As shown in Figure 6, indication UE in " R "=0 continues to send the data of affected LCH on eNB_S.For this situation, if the Scell being just deactivated is last, UE will hang up the transmission of affected LCH.This is because there is no movable Scell on eNB_S, and UE does not allow to send those affected LCH on eNB_M.
As shown in Figure 6, indication UE in " R "=1 can send the data of affected LCH on eNB_M.For this situation, no matter have and there is no movable Scell on eNB_S, UE will start to send the data of those affected LCH on eNB_M.
In addition,, in order to realize C plane and U planar separation, scheme 2 can further be defined as follows:
" R "=0 and to have at least one eNB_S Scell be movable, UE continues to send DRB data on eNB_S;
" R "=0 and all eNB_S Scell are inactive, and UE will hang up all DRB transmission, because eNB_S does not allow to send DRB on eNB_M;
" R "=1 and to have at least one eNB_S Scell be movable, the affected LCH that UE processes the eNB_S Scell hanging up by deexcitation, because UE can not send DRB on eNB_M.This is because there is at least one eNB_S Scell to use, and does not allow to send DRB on eNB_M.
" R "=1 and do not have eNB_S Scell movable, UE continues to send all DRB on eNB_M.
rank 2:LCH is mapped to a node
For this rank, UE only knows that a LCH will be processed by which node (as eNB_M or eNB_S).Therefore, before in the end an eNB_S Scell becomes deexcitation, eNB_S Scell deexcitation/activation/releasing operation will can directly not affect UE UL LCP process.The scheme 1 of therefore advising for rank 1 and scheme 2 can be changed into following scheme 1 ' and scheme 2 ':
Scheme 1 ': method 300 is automatically performed according to predefined rule by UE, has wherein defined following new regulation:
Rule 1 ': be movable if there is at least one eNB_S Scell, all LCH that are mapped to eNB_S send and be not subject to the impact of eNB_S Scell deexcitation/releasing operation on eNB_S;
Rule 2 ': when all eNB_S Scell are deactivated or discharge, UE temporarily continues to send all LCH that are mapped to eNB_S on eNB_M, and the LCH transmission that eNB_S processes is not suspended.
Scheme 2 ': eNB_M implicit commands UE carrys out manner of execution 300
In scheme 2 ', " R " bit in Scell activation/deactivation MAC CE will be as given a definition:
If have at least one eNB_S Scell maintenance activity, ignore " R " bit;
" R "=0 and all eNB_S Scell are deactivated, and UE temporarily continues to send all LCH that eNB_S processes on eNB_M;
" R "=1 and all eNB_S Scell are deactivated, and UE hangs up and is mapped to all LCH on eNB_S, because eNB_S does not allow to send its handled LCH on eNB_M.
Rank 2 is very easy to realize C plane and U planar separation:
In rank 2, for scheme 1 ', the new regulation can be defined as follows:
If there is at least one eNB_S Scell maintenance activity, UE sends continuation 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 ', can redefine as follows " R " bit:
If there is at least one eNB_S Scell maintenance activity, ignore " R " bit, and UE continues to send all DRB on eNB_S;
" R "=0 and all eNB_S Scell are deactivated, and UE temporarily continues to send all DRB on eNB_M;
" R "=1 and all eNB_S Scell are deactivated, and UE hangs up all DRB transmission, because eNB_S does not allow to send DRB on eNB_M.
Fig. 4 show according to embodiment of the present invention for supporting the block diagram of the device 400 of dual link.Device 400 can be realized in eNB_M or by eNB_M and realizing.As shown in Figure 4, device 400 comprises initialization unit 410, and it is configured to when UE initially accesses eNB_M, and this UE is connected to Pcell or eNB_M to process current LCH by Pcell or eNB_M.Device 400 also comprises indicating member 420, and it is configured to will be processed or will be processed by Pcell or Scell by eNB_M or eNB_S to this UE indication LCH by special RRC message.
Fig. 5 show according to embodiment of the present invention for supporting another device schematic diagram of 500 of dual link.Device 500 for example can be realized in eNB_M or by eNB_M and realizing.As shown in Figure 5, device 500 comprises that dual link enables unit 510, and its data that are configured such that a LCH are only processed or only by an eNB_M or eNB_S, processed by a Pcell or Scell.Device 500 also comprises cell change processing unit 520, its Scell that is configured to the eNB_S that is mapped to as this LCH is deactivated or discharges, and while there is the Scell of another movable eNB_S at least, by this movable eNB_S, send the data of this LCH, also be configured to, when the Scell of all eNB_S is deactivated or discharges, by eNB_M, send the data of this LCH.
In the disclosure, according to the linguistic context of using this term, term " base station " can refer to overlay area and/or the base station that this overlay area is served or the base station sub-system of base station.
In addition, in the disclosure, as above, for as described in method 300, for the definition of " R " bit, be a kind of exemplary description, those skilled in the art can carry out definition contrary or that other are different to it completely, as long as can clearly indicate the behavior of UE.
Utilize the scheme based on carrier aggregation support dual link of advising in the present invention, can improve small-cell dispatching efficiency and realize C plane and U planar separation.
Here, with reference to accompanying drawing, method disclosed herein is described.Yet be to be understood that, shown in accompanying drawing and specification described in step order be only schematic, without departing from the scope of the claims, these method steps and/or action can according to different order carry out and be not limited to shown in accompanying drawing and specification described in concrete order.
In one or more exemplary design, can realize the function described in the application by hardware, software, firmware or their combination in any.If realized with software, can be using described function as one or more instructions or code storage on computer-readable medium, or transmit as one or more instructions or the code on computer-readable medium.Computer-readable medium comprises computer-readable storage medium and communication media, and wherein communication media comprises and contributes to computer program from a place, to be delivered to the arbitrary medium of another place.Storage medium can be any usable medium of universal or special computer-accessible.This computer-readable medium can comprise, such as but not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disc memory apparatus, disk storage device or other magnetic storage apparatus, or can be used for carrying or storing with the form of universal or special computer or the addressable instruction of universal or special processor or data structure any other medium of the code modules of hope.And, any connection computer-readable medium of also can being known as.For example, if software be use that coaxial cable, optical fiber cable, twisted-pair feeder, Digital Subscriber Line (DSL) or the wireless technology such as infrared ray, radio and microwave are come from website, server or the transmission of other remote source, coaxial cable, optical fiber cable, twisted-pair feeder, DSL or the wireless technology such as infrared ray, radio and microwave are also included within the definition of medium so.
Can or realize or carry out in conjunction with the described various exemplary logical blocks of the disclosure, module and circuit for carrying out the combination in any of function as herein described by general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components.General processor can be microprocessor, or processor can be also processor, controller, microcontroller or the state machine of any routine.Processor also can be implemented as the combination of computing equipment, for example, and the combination of the combination of DSP and microprocessor, multi-microprocessor, one or more microprocessor and DSP kernel, or any other this kind of structure.
Those of ordinary skills it is also understood that various exemplary logical block, module, circuit and the algorithm steps in conjunction with the application's embodiment description can be embodied as electronic hardware, computer software or the combination of the two.In order clearly to represent this interchangeability between hardware and software, various exemplary parts, piece, module, circuit and step have all been carried out to general description around its function above.As for this function, be embodied as hardware or be embodied as software, depend on specific application and be applied to the design constraint in whole system.Those skilled in the art can realize described function in flexible mode for every kind of application-specific, still, thisly realize decision-making and should not be construed as and deviate from protection scope of the present invention.
Above description for making any those of ordinary skill of this area can realize or use the present invention of the present disclosure.To those skilled in the art, various modifications of the present disclosure are all apparent, and general principle defined herein also can be applied to other distortion in the situation that not departing from spirit of the present invention and protection range.Therefore, the present invention is not limited to example as herein described and design, but consistent with the widest scope of principle disclosed herein and novel features.
Claims (19)
1. for supporting at the cordless communication network that comprises a macro base station and one or more small-cell base stations, comprise a method for dual link:
Initialization step, when subscriber equipment (UE) initially accesses macro base station, this UE is connected to main plot (Pcell) or macro base station to process current logic channel (LCH) by Pcell or macro base station, and wherein Pcell is associated with macro base station, is operated on principal component carrier wave;
Indication step, controls (RRC) message by dedicated radio resources and will be processed or will be processed by Pcell or auxiliary community (Scell) by macro base station or small-cell base station to this UE indication LCH, and wherein Scell is operated on auxiliary component carrier.
2. the method for claim 1, wherein this RRC message is the RRC message for radio bearer (RB) configuration/reconfiguration, and this indication step comprises that to this RRC message, adding new cell indicates this RB to be processed or processed or indicated this RB to be processed or processed by small-cell base station by macro base station by Scell by Pcell.
3. method as claimed in claim 2, wherein this cell is processed by Pcell or indicates this RB to be processed by macro base station for empty this RB of indication.
4. the method for claim 1, wherein this RRC message is the RRC message for Scell configuration/reconfiguration, and this indication step comprises when carrying out Scell configuration/reconfiguration, to this RRC message, adds the RB/LCH of new cell will be processed by the Scell of this configuration/reconfiguration to UE indication.
5. method as claimed in claim 4, wherein this indication step comprises when configuration/reconfiguration RB/LCH, upgrades RB/LCH configuration/reconfiguration message and to add new cell, indicates the RB/LCH of institute's configuration/reconfiguration to be processed or processed by Scell by Pcell.
6. method as claimed in claim 4, wherein this indication step comprises when configuration/reconfiguration RB/LCH, the RB/LCH by Scell configuration/reconfiguration RRC message to UE indication institute configuration/reconfiguration is processed or is processed by small-cell base station by macro base station.
7. the method for claim 1, wherein this indication step comprise the new special RRC message of definition with indication Pcell or the Scell for the treatment of each RB/LCH, or indication is for the treatment of macro base station or the small-cell base station of each RB/LCH.
8. the method for claim 1, wherein this RRC message comprises the RRC message for Scell configuration/reconfiguration, wherein this indication step comprises to inserting new cell in this RRC message indicating this Scell whether to belong to small-cell base station.
9. the method for claim 1, also comprises:
The Scell of the small-cell base station being mapped to as this LCH is deactivated or discharges, and while there is the Scell of another movable small-cell base station at least in this cordless communication network, sends the data of this LCH by this movable small-cell base station;
When the Scell of all small-cell base stations is deactivated or discharges, by macro base station, send the data of this LCH.
10. for supporting at the cordless communication network that comprises a macro base station and one or more small-cell base stations, comprise a method for dual link:
Make the data of a logic channel (LCH) only by Huo Fu community, a main plot (Pcell) (Scell), process or only by a macro base station or small-cell base station, be processed;
The Scell of the small-cell base station being mapped to as this LCH is deactivated or discharges, and while there is the Scell of another movable small-cell base station at least in this cordless communication network, sends the data of this LCH by this movable small-cell base station;
When the Scell of all small-cell base stations is deactivated or discharges, by macro base station, send the data of this LCH.
11. methods as claimed in claim 10, wherein the method is carried out according to predefined rule by UE.
12. methods as claimed in claim 10, when the Scell of the small-cell base station being wherein mapped to as this LCH is released, to adding new cell and indicate this LCH to process or to indicate this LCH to be processed by macro base station or small-cell base station by Pcell or Scell for discharging the RRC message of this Scell.
13. 1 kinds comprise the method for dual link for supporting at the cordless communication network that comprises a macro base station and one or more small-cell base stations:
Make the data of a logic channel (LCH) only by Huo Fu community, a main plot (Pcell) (Scell), process or only by a macro base station or small-cell base station, be processed;
When the Scell of the small-cell base station being mapped to as this LCH is deactivated, hang up this LCH transmission until this Scell be reactivated.
14. 1 kinds comprise the method for dual link for supporting at the cordless communication network that comprises a macro base station and one or more small-cell base stations:
Make the data of a logic channel (LCH) only by Huo Fu community, a main plot (Pcell) (Scell), process or only by a macro base station or small-cell base station, be processed;
When the Scell of small-cell base station is deactivated, macro base station is indicated UE behavior by " R " bit arranging in Scell activation/deactivation MAC CE.
15. methods as claimed in claim 14, wherein indication UE in " R "=0 continues to send on small-cell base station the data that are subject to the LCH that Scell deexcitation affects, and " R "=1 indication UE sends the data that are subject to the LCH that Scell deexcitation affects on macro base station.
16. methods as claimed in claim 14, wherein, when " R "=0 and while having the Scell of at least one small-cell base station movable, indication UE continues to send Data Radio Bearer (DRB) data on small-cell base station; When the Scell of " R "=0 and all small-cell base stations is during inertia, indication UE hangs up all DRB transmission; When " R "=1 and while having the Scell of at least one small-cell base station movable, indication UE hangs up the LCH that the Scell by the small-cell base station of deexcitation processes; When " R "=1 and while not having the Scell of small-cell base station movable, indication UE continues to send all DRB on macro base station.
17. methods as claimed in claim 14, if wherein there is the Scell maintenance activity of at least one small-cell base station, ignore " R " bit; When the Scell of " R "=0 and all small-cell base stations is during inertia, UE continues to send all LCH that small-cell base station is processed on macro base station; When the Scell of " R "=1 and all small-cell base stations is during inertia, UE hangs up and is mapped to all LCH on small-cell base station.
18. 1 kinds comprise the device of dual link for supporting at the cordless communication network that comprises a macro base station and one or more small-cell base stations:
Initialization unit, it is configured to when subscriber equipment (UE) initially accesses macro base station, this UE is connected to main plot (Pcell) or macro base station to process current logic channel (LCH) by Pcell or macro base station, wherein Pcell is associated with macro base station, is operated on principal component carrier wave;
Indicating member, it is configured to control (RRC) message by dedicated radio resources and will is processed or will be processed by Pcell or auxiliary community (Scell) by macro base station or small-cell base station to this UE indication LCH, and wherein Scell is operated on auxiliary component carrier.
19. 1 kinds comprise the device of dual link for supporting at the cordless communication network that comprises a macro base station and one or more small-cell base stations:
Dual link enables unit, and its data that are configured such that a logic channel (LCH) are only processed or only by a macro base station or small-cell base station, processed by Huo Fu community, a main plot (Pcell) (Scell); And
Cell change processing unit, its Scell that is configured to the small-cell base station that is mapped to as this LCH is deactivated or discharges, and while there is the Scell of another movable small-cell base station at least in this cordless communication network, by this movable small-cell base station, send the data of this LCH, also be configured to, when the Scell of all small-cell base stations is deactivated or discharges, by macro base station, send the data of this LCH.
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 |
| 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 |
| PCT/IB2014/000795 WO2014162203A2 (en) | 2013-04-03 | 2014-04-03 | Method and apparatus for supporting dual connectivity |
| KR1020157031552A KR20150138359A (en) | 2013-04-03 | 2014-04-03 | Method and apparatus for supporting dual connectivity |
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| CN201310116980.7A CN104105220B (en) | 2013-04-03 | 2013-04-03 | The method and apparatus for supporting dual link |
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| CN104105220B CN104105220B (en) | 2018-03-02 |
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| EP (1) | EP2982160A2 (en) |
| JP (1) | JP2016518062A (en) |
| KR (1) | KR20150138359A (en) |
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Cited By (3)
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| WO2018227625A1 (en) * | 2017-06-16 | 2018-12-20 | 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 |
| US11711861B2 (en) | 2018-04-06 | 2023-07-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Communication resource configurations for coexistence |
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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 |
| 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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| WO2013010418A1 (en) * | 2011-07-15 | 2013-01-24 | 华为技术有限公司 | Method, apparatus and system for wireless broadband communication |
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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 |
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| WO2013010418A1 (en) * | 2011-07-15 | 2013-01-24 | 华为技术有限公司 | Method, apparatus and system for wireless broadband communication |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018227625A1 (en) * | 2017-06-16 | 2018-12-20 | Nokia Technologies Oy | Communication apparatus, method and computer program |
| RU2732488C1 (en) * | 2017-06-16 | 2020-09-17 | Нокиа Текнолоджиз Ой | Communication device, method of communication and computer program |
| US12127280B2 (en) | 2017-06-16 | 2024-10-22 | Nokia Technologies Oy | Communication apparatus, method and computer program for mapping a deactivated duplicate radio link control to an active cell |
| 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 |
| CN111418259A (en) * | 2017-12-19 | 2020-07-14 | Oppo广东移动通信有限公司 | Control method and device for secondary cell and computer storage medium |
| CN111418259B (en) * | 2017-12-19 | 2023-08-22 | Oppo广东移动通信有限公司 | Control method, equipment and computer storage medium for auxiliary cell |
| US11711861B2 (en) | 2018-04-06 | 2023-07-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Communication resource configurations for coexistence |
Also Published As
| Publication number | Publication date |
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| JP2016518062A (en) | 2016-06-20 |
| EP2982160A2 (en) | 2016-02-10 |
| KR20150138359A (en) | 2015-12-09 |
| WO2014162203A2 (en) | 2014-10-09 |
| WO2014162203A3 (en) | 2015-01-29 |
| CN104105220B (en) | 2018-03-02 |
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