CN104349466B - Method for supporting dual link in the communication system polymerizeing based on carrier wave - Google Patents
Method for supporting dual link in the communication system polymerizeing based on carrier wave Download PDFInfo
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- CN104349466B CN104349466B CN201310330335.5A CN201310330335A CN104349466B CN 104349466 B CN104349466 B CN 104349466B CN 201310330335 A CN201310330335 A CN 201310330335A CN 104349466 B CN104349466 B CN 104349466B
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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
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0096—Indication of changes in allocation
- H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
-
- 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
-
- 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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/20—Interfaces between hierarchically similar devices between access points
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of methods for supporting dual link in first base station in the communication system being polymerize based on carrier wave, wherein, the first base station at least administers one or more from cell, each has activation and deactivation status from cell, described method includes following steps：When the first base station will change the state of slave cell that it distributes to user equipment, request message is sent to other base stations, the request message includes at least the mark of the user equipment；Receive response message from other base stations, the response message includes at least the identifying of the user equipment, other described base stations distribute to the user equipment slave cell call number and the state from cell corresponding with the call number；And it is based on the response message, the control signaling of MAC layer is generated and is sent to the user equipment, wherein the control signaling of the MAC layer is used to indicate all states from cell for distributing to the user equipment.
Description
Technical field
The present invention relates to the communication technologys more particularly to a kind of in the communication system polymerizeing based on carrier wave supporting doubly-linked
The method connect.
Background technology
According to present research state, discussed in RAN2 for cell enhancing high level (Small Cell
Enhancement-high layer) research project.One free-revving engine of the project is for " dual link (dual
Connectivity the) " support of feature.For this feature, user equipment is communicated with the holding of at least two distributed base stations simultaneously,
These base stations are connected by nonideal backhaul.
In order to support dual link, solve the problems, such as that a kind of this possible solution is the frame polymerizeing based on carrier wave.
Wherein, a kind of possible scene is macrocell and slight area overlapping, and SCE research projects are using this scene as the emphasis of research.
According to the concept that carrier wave polymerize, macrocell will be used as main plot, and slight go to be used as from cell.When user equipment enters
Or when leaving the coverage area of cell, cell can by as from cell be assigned or discharge.Main advantage is that because
This does not need the change of main plot when user equipment enters the coverage area of macrocell, so reducing handoff procedure.User
Equipment, which enters or leaves from cell, is only taken as the addition from cell or release operation.In brief, master base station and from base station
Multiple carrier waves can be controlled respectively.For example, master base station can administer a main plot and/or zero or one or multiple from small
Area.And zero or one can be administered from base station or multiple from cell.
According to the concept that carrier wave polymerize, from cell, there are two types of states, that is, activate and deactivate.The former allows from cell
Data transmission, the latter will not transmission data until be activated again from cell.In R10/R11, by the control signaling of MAC layer Lai
Activation and deactivation from cell is set, and how to determine from the state of cell be entirely base station decision.Typically, it is
Activation/deactivation needs to consider Multiple factors from cell, such as frequency situation, data cached state, loads from cell data
Situation etc..In the situation for considering dual link, after being added to the slave cell from base station, user equipment can be passed through from base station
CQI feedback estimate channel condition.In the data cached state that can also obtain relevant user equipment from base station and from small
The data payload situation in area.Therefore, it is possible to be reasonably assumed that the slave cell that will be responsible for activating and deactivating their own from base station.Class
As, it can be reasonably assumed that master base station will be responsible for activating and deactivating the slave cell of their own.I.e. only from base station and master base station
Understand the state of the slave cell of their own but does not know other states from cell.It activates/goes according to the slave cell that R10 is defined
The control signaling of the MAC layer of activation indicates all to be currently assigned to user equipment in 1 byte (8 bit) of loading section
Slave cell state.Also, user equipment will be read by the bit in the control signaling of this MAC layer to check each work as
The state of the slave cell of preceding distribution.However, in R12, when supporting dual link, two distributed base stations may only know that it certainly
The state of the slave cell of oneself distribution.Just the generation to the control signaling of the MAC layer from cell activation/deactivation and transmission belt are come for this
Problem.
Invention content
To solve the above-mentioned problems, according to the first aspect of the invention, it is proposed that a kind of in the communication being polymerize based on carrier wave
For the method for supporting dual link in first base station in system, wherein the first base station at least administer one or more from
Cell each has activation and deactivation status from cell, and described method includes following steps：When the first base station will change
When becoming the state of slave cell that it distributes to user equipment, request message is sent to other base stations, the request message at least wraps
Include the mark of the user equipment；Response message is received from other base stations, the response message includes at least the user equipment
Identify, the call number of slave cell of the user equipment is distributed in other described base stations and corresponding with the call number
From the state of cell；And-it is based on the response message, the control signaling of MAC layer is generated and is sent to the user equipment,
Described in the control signaling of MAC layer be used to indicate all states from cell for distributing to the user equipment.
Further it is proposed that for supporting dual link in a kind of the second base station in the communication system being polymerize based on carrier wave
Method, wherein one or more is at least administered from cell in second base station, each has from cell and activates and deactivate shape
State, described method includes following steps：Request message is received from first base station, the request message includes at least the user
The mark of equipment；And-request message is based on to first base station transmission response message, the response message at least wraps
Include the identifying of the user equipment, second base station distribute to the user equipment slave cell call number and with institute
State the corresponding state from cell of call number.
According to the second aspect of the invention, it is proposed that used in a kind of master base station in the communication system being polymerize based on carrier wave
In the method for supporting dual link, wherein in the communication system, the master base station administer a main plot and/or one or
It is multiple that each there is activation and deactivation status, the method from cell from base station administration one or more from cell from cell
Include the following steps：When the master base station will change the state of slave cell that it distributes to user equipment, generate and to described
User equipment sends the control signaling of the first MAC layer, is distributed from base station wherein the control signaling instruction of first MAC layer is described
To the user equipment slave cell state all in deactivation status, and the control signaling of first MAC layer also refers to
Show that the master base station distributes to the state of the slave cell of the user equipment；Or described method includes following steps：From it is described from
Base station receives instruction message, and the instruction message is used to indicate the master base station and is sent to the user equipment including described from base
The control signaling of the second MAC layer of the state of the slave cell of the user equipment is distributed at station, wherein the instruction message is at least
Identifying including the user equipment, the call number of the slave cell that the user equipment is distributed to from base station and with institute
State the corresponding state from cell of call number；And-it is based on the instruction message, it generates and to described in user equipment transmission
The control signaling of second MAC layer, wherein the control signaling of second MAC layer is used to indicate the institute for distributing to the user equipment
There is the state from cell.
Further it is proposed that a kind of side from base station for supporting dual link in the communication system being polymerize based on carrier wave
Method, wherein in the communication system, master base station one main plot of administration and/or one or more are described from base station from cell
Administration one or more each has activation and deactivation status, described method includes following steps from cell from cell：Work as institute
It states when will change state that it distributes to the cell of user equipment from base station, if described distribute to the user equipment from base station
At least one of cell be active, then generate and sent to the user equipment control signaling of MAC layer, wherein
The control signaling of the MAC layer only indicates the state of the cell that the user equipment is distributed to from base station；If it is described from
The slave cell of the user equipment is distributed to currently all in deactivation status in base station, then sends instruction to the master base station and disappear
Breath includes the slave cell that the user equipment is distributed to from base station to allow the master base station to be sent to the user equipment
The control signaling of the MAC layer of state, wherein the instruction message includes at least identifying, being described from base station point for the user equipment
The call number and the state from cell corresponding with the call number of the slave cell of user equipment described in dispensing.
Further it is proposed that for supporting dual link in a kind of user equipment in the communication system being polymerize based on carrier wave
Method, wherein in the communication system, master base station administers a main plot and/or one or more from cell, is managed from base station
Linchpin one or more each has activation and deactivation status, described method includes following steps from cell from cell：It is based on
Whether at least one of the slave cell that the user equipment is distributed to from base station is active to read MAC layer
Control signaling, the control signaling of the MAC layer are used to indicate the state for the slave cell for distributing to the user equipment.
According to the third aspect of the invention we, it is proposed that in a kind of first base station in the communication system being polymerize based on carrier wave
Method for supporting dual link, wherein the first base station at least administers one or more from cell, each has from cell
Activation and deactivation status, described method includes following steps：Indication bit is set in the control signaling of MAC layer, is indicated
User equipment reads all states from cell for distributing to the user equipment in the control signaling of MAC layer, or instruction
Only read the state that the first base station distributes to the slave cell of the user equipment；And-to the user equipment send institute
State the control signaling of MAC layer.
Further it is proposed that for supporting dual link in a kind of user equipment in the communication system being polymerize based on carrier wave
Method, wherein in the communication system, base station includes master base station and from base station, the master base station administer a main plot and/
Or one or more is from cell, it is described to administer one or more from cell, each from cell with activation and deactivation from base station
State, described method includes following steps：Based on the control signaling from the master base station or the MAC layer received from base station
In control signaling of the indication bit to read the MAC layer in the slave cell for distributing to the user equipment state,
Described in indication bit indicate that the user equipment is read in the control signaling of MAC layer and distribute to all of the user equipment
Slave cell state, or instruction only reads the base station of the control signaling for sending the MAC layer and distributes to the user equipment
From the state of cell.
Various aspects of the invention will be more clear by the explanation of embodiment in detail below.
Description of the drawings
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent：
Fig. 1 shows the method flow diagram for supporting dual link according to first embodiment of the invention；
Fig. 2 shows the method flow diagrams for supporting dual link of second embodiment according to the present invention；
Fig. 3 shows the method flow diagram for supporting dual link of third embodiment according to the present invention；
Fig. 4 shows the method flow diagram for supporting dual link of the 4th embodiment according to the present invention；
Fig. 5 shows the format of the control signaling of MAC layer according to an embodiment of the invention；And
Fig. 6 shows the method flow diagram for supporting dual link of the 5th embodiment according to the present invention.
Run through different diagrams in the figure, same or similar reference numeral indicates identical or corresponding component or spy
Sign.
Specific implementation mode
In the present invention, it is proposed that interactive process between three kinds of base stations (master base station, from base station), to realize R10/
Application of the MAC control signalings that R11 is defined in R12.
The first：X2 signalings, for realizing state of the base station to requested base station inquiry from cell of request, X2 letters
Enable the mark needed including at least user equipment.
Second：X2 signalings, will be relevant from the transmission of the state of cell with user equipment for realizing requested base station
To the base station of request, which needs the index of the mark including at least user equipment, the slave cell for distributing to user equipment
Number and the state from cell corresponding with call number.
The third：X2 signalings are used to indicate and are over by the transmission of the control signaling for the MAC layer for asking base station to carry out.
In addition, the invention also provides two kinds of new schemes to realize the control for being used to indicate the MAC layer from the state of cell
Signaling processed.
Scheme one：Recessive scheme based on the operation between base station and user equipment；
Scheme two：By the operation for having to explicitly guiding user equipment comprising indication bit in the control signaling of MAC layer.
Finally, for embodiment one and scheme two, it is proposed that following two kinds of technologies：
1. for scheme one：Propose the new rule for base station and user equipment；
2. for scheme two：" R " bit redefined in the control signaling of MAC layer comes
Instruct the user equipment how the load of the control signaling of reading MAC layer.
As it was noted above, in R12, when supporting dual link, it can be reasonably assumed that master base station and be controlled respectively from base station
Make the activation/deactivation operation of the slave cell of oneself.This just cause each base station of following situations only learn their own distribution from
The state of cell.Therefore, how to lead to the problem of the control signaling of the MAC layer of relevant activation/deactivation is.R10/11 is defined
In, it will be including all and relevant state from cell of user equipment in the control signaling of MAC layer.
Another problem is how send the control signaling of MAC layer to user equipment in the case of R12.In R10/R11,
It is not restricted for the position of the control signaling for the MAC layer for sending activation/deactivation.That is, the control signaling of MAC can be by leading
Cell is sent, also can be by being sent from cell.The control signaling of this MAC layer in R10 include it is all currently distribute from small
The state in area, and all bits in the control signaling for checking MAC layer are learned and each are currently assigned to it by user equipment
Slave cell state.
It in R12, is always activated due to main plot, so master base station can send the slave cell of related master base station administration
The control signaling of the MAC layer of state.For the state of the slave cell from base station, can both can be transmitted by master base station,
It can be by being transmitted from base station.The former is directed to following situation：The slave cell from base station not activated, or even if there is activation
Slave cell from base station, also without available scheduling resource.For the latter, at least exist activation from base station from small
Area, and scheduling resource is available.
Based on the discussion above, the scheme of the control signaling of the MAC layer about the slave cell activation/deactivation in R12 carries
Following two schemes are gone out：
Scheme 1：The control signaling of the MAC layer defined in R10, the control signaling of the wherein MAC layer is still used to carry master
Base station and all states from cell distributed from base station for user equipment.Also, newly define in this scenario operating process/
X2 signalings realize the interaction between each base station.
Scheme 2：The state for the slave cell that each base station is respectively distributed is transmitted independently to user equipment.This means that
The control signaling of MAC layer only includes the state of the slave cell for the base station for belonging to transmission.Therefore, will propose it is a kind of it is new in base station and
Operating process between user equipment.
Scheme 1 will be hereafter discussed first：
For scheme 1, the control signaling of MAC layer should include the state of all slave cells for distributing to user equipment, such as
Defined in R10.And as described above, the slight state of its own administration is only learned in each base station.When (the request of a base station
Base station can be primary base station or secondary base station) when wanting to change the state for the slave cell for oneself distributing to user equipment, need and its
His base station (requested base station, can be primary base station or secondary base station) interaction come learn other base stations distribute to user equipment from
The state of cell, to the control signaling of the MAC layer to generate the state for containing all slave cells for distributing to user equipment.
In order to realize the program, need to be arranged a kind of new X2 signalings to support the interactive process between base station, this is not prop up in R11
It holds.
Here, the X2 signalings (the X2 signalings for request) should include at least the mark of user equipment, to be requested
Base station learn that the state of the slave cell of which user equipment should be sent to the base station of request.In response, requested
Base station should indicate the relevant state from cell, and pass through X2 messagings.The message will be including at least the mark of user equipment
The call number of the slave cell of user equipment and the state from cell corresponding with call number are distributed in knowledge, requested base station.
Additionally, for implementation 1, it is also necessary to following setting：In the control of the MAC layer previously sent by the base station asked
Before signalling processed terminates, requested base station does not allow the control signaling of generation/the send MAC layer of oneself, i.e., previous
Before the control signaling end of transmission by the MAC layer for the base station transmission asked, requested base station does not allow to again attempt to change
The state of its slave cell controlled.This means that the control signaling for not allowing requested base station itself to send MAC layer, or
Other base stations are allowed to send the control signaling of MAC layer again.Thus user equipment is avoided to receive the control of multiple and different MAC layers
Signaling, so as to cause the confusion of operation.For example, due to nonideal delay, the control of the MAC layer generated by the base station asked is believed
Order may be received by user equipment later than the control signaling of the MAC layer generated by requested base station, thereby result in user
The operation of equipment is chaotic.Therefore, it is necessary to make as given a definition：The base station of request will be received from user equipment in response to MAC layer
The feedback of control signaling, and whether processing is over based on the transmission of the control signaling of the determining MAC layer of feedback.When determining MAC layer
When the transmission of control signaling is over, confirmation message is sent to requested base station, is indicated by its MAC layer carried out
The transmission of control signaling is over.Requested base station is able to know that the control that can safely generate and send now MAC layer
Signaling processed, the operation without influencing user equipment.
Based on discussed above, following flows will be for example taken.Fig. 1 is shown according to first embodiment of the invention
Method flow diagram for supporting dual link.
In step S101, user equipment is distributed to when base station A (primary base station or secondary base station asks base station) will change it
From the state of cell when, before generating and sending MACE layers of control signaling, will by X2 interface to other base stations B send out
Request message is sent to inquire the current state that other base stations B (requested base station) distributes to the slave cell of the user equipment.
The request message includes the mark of user equipment, so that requested base station B feeds back correct information.
In step s 102, in response, it is pair that requested base station B feeds back it by X2 interface to the base station A of request
The current state for the slave cell that should be distributed in the user equipment of the mark of the user equipment in request message.The response message is at least
Identifying including user equipment, requested base station B distribute to the slave cell of user equipment call number and with call number pair
The state for the slave cell answered, to ensure that the control signaling of correct MAC layer is generated and sent in subsequent step.
In step s 103, the base station A of request is based on response message, generates and sent to user equipment the control of MAC layer
Signaling, the control signaling of wherein MAC layer are used to indicate all states from cell for distributing to user equipment, that is, include base station A
This as user equipment distribution slave cell state and other each base stations (such as base station B) be user equipment distribution from
The state of cell.
In step S104, base station A receives the feedback of the control signaling in response to MAC layer from user equipment, and based on anti-
Feedback determines the transmission of the control signaling of MAC layer whether processing is over.
In step S105, base station A is if it is determined that the transmission of the control signaling of MAC layer is over, then it sends out to base station B
Confirmation message is sent, indicates that the transmission of the control signaling of the MAC layer carried out by base station A is over.To requested base station B
Hereafter it can again attempt to change the state for the slave cell that it is controlled, such as generate and send the possible MAC layer of oneself
Control signaling or allow other base stations (such as base station A) to send the control signaling of MAC layer again.
The advantages of this scheme, is that the influence for standard is less, and newly defines interaction between two base stations of realization
Flow.In the above-described embodiments, base station A can be master base station, can also be from base station.Similarly, base station B can be main base
It stands, can also be from base station.
Turn now to scheme 2：
In order to preferably solve delay problem, scheme 2 may be used.For scheme 2, new activation/deactivation will be defined
The generation of the control signaling of MAC layer and transmission scheme, so as not to base station administration slave cell state can independently by
Transmission.This mean that the control signaling of a MAC layer can only carry send that the base station of the control signaling administered from small
The state in area.Thus, it is no longer necessary to the interactive information between different base station, therefore no longer will appear time delay.For scheme 2, separately
One focuses on, therefore, to assure that user equipment only reads the part in the control signaling of MAC layer, and ignores other parts.I.e.
Which for implementation 2, need to include base station in the control signaling for allowing user equipment to learn MAC layer to be user equipment point
The current state for the slave cell matched, herein it is contemplated that following two embodiments：
Scheme one：Recessive scheme based on the operation between base station and user equipment；
Scheme two：By the operation for having to explicitly guiding user equipment comprising indication bit in the control signaling of MAC layer.
The two schemes are described more fully below.
Scheme one：
For the program, a kind of solution of generation/transmission of the control signaling of new activation/deactivation MAC layer will be proposed
The operating process of scheme and respective user equipment (these are not supported in R11)：
For the control signaling from the MAC layer sent from cell from base station,
It only includes the state for the slave cell that user equipment is distributed in the slave cell from base station administration；And
User equipment should only be read with those described above from the relevant bit of cell, and ignore other bits.
Control signaling for the MAC layer sent from master base station should include dividing in the slave cell that master base station is administered naturally
The state of the slave cell of provisioned user equipment.In some instances, master base station should also be as being responsible for carrying from base station distributing to user
The state of the slave cell of equipment.Such as in the case where the slave cell from base station is all in unactivated state, and at this time from base
The state for the slave cell for distributing to user equipment for allowing master base station to be administered to user equipment transmission from base station to master base station request of standing.
In addition, the slave cell from base station is not sent from base station to master base station request from base station and is administered all in the case of inactive
The slave cell for distributing to user equipment state such case, master base station will be in the control signaling of the MAC layer transmitted by it
It is both configured to 0 (showing them all in deactivation status) with the relevant bit of slave cell from base station, and the MAC layer
Control signaling may also indicate that master base station distributes to the state of the slave cell of user equipment.
Therefore, for the control signaling of the MAC layer sent from master base station, there is the following two kinds situation：
Situation 1：The control signaling of MAC layer includes the state that master base station distributes to the slave cell of user equipment, and from base
The state that the slave cell of user equipment is distributed at station both is set to deactivate；
Situation 2：The control signaling of MAC layer includes master base station and distributes to the state of the slave cell of user equipment from base station,
This is similar with R11.
How problem is so that user equipment detaches above two situation, to correctly understand received from master base station
The control signaling of MAC layer.For this problem, by the transmission plan for being proposed for from the state of the slave cell of base station, (this is in R11
In do not support)：
If the slave cell for distributing to user equipment from base station sends MAC if necessary currently all in deactivation status
The signaling of layer must then ask the transmission of the signaling of master base station progress MAC layer from base station.As a result, from the relevant from small of base station
The state in area will be sent to master base station.
Whether user equipment is active based at least one of the slave cell for distributing to user equipment from base station
Implicitly to detach above two situation.
Based on above-mentioned new solution, following operating process will be defined.
The rule of the base station side of generation and the transmission of the control signaling of MAC layer：
1. the control signaling of MAC layer caused by the state of the slave cell of master base station changes will only be sent by master base station.This will
It is reasonable, because the main plot of master base station administration is at least activation.
2. the control signaling for changing caused MAC layer from the state of the slave cell of cell can be sent by master base station, also may be used
By being sent from base station, will comply with following rule：
A. if distributing to the slave cell of user equipment currently all in deactivation status, if from base station requests from base station
Master base station sends and correlation is informed master base station from the state of cell, then the MAC layer of the state of the related slave cell from base station
Control signaling will be sent by master base station.
For this rule, from base station by the relevant state from cell by X2 signallings to master base station, such as can
In a manner of by described in scheme 1, so that master base station generates the control signaling of relevant MAC layer.
Secondly, it also needs to forbid receiving its transmission to the control signaling of MAC layer sent by master base station from base station
The state for again attempting to change the slave cell that user equipment is distributed to from base station before the message being over, i.e., for example forbid from
Base station itself sends the control signaling of new MAC layer or forbids sending the control signaling of new MAC layer from base station requests master base station.
Here, the similar interactive mode in scheme 1 equally can be used.
B. it if at least one of the slave cell for distributing to user equipment from base station is active, is produced from base station
Control signaling raw and that MAC layer is sent to user equipment, the wherein control signaling of MAC layer only indicate that distributing to user from base station sets
The state of standby slave cell.
Similarly, need to define the operating process of new user equipment side ensure for MAC layer control signaling just
True reception：
1. the control signaling for the MAC layer received from master base station,
When at least one of slave cell for distributing to user equipment from base station is in the state of activation, Yong Hushe
The standby state ignored from the slave cell for distributing to user equipment from base station in the control signaling for the MAC layer that master base station receives；
When in the slave cell for distributing to the user equipment from base station all in unactivated state, user equipment is read
The state of the slave cell that user equipment is distributed to from base station in the control signaling of the MAC layer received from master base station；And
2. for the control signaling from the MAC layer received from base station,
The state of the slave cell that user equipment should be distributed to from base station in the control signaling of the MAC layer is only read, and
Ignore other bits in the control signaling of other MAC layers.
The embodiment corresponding to scheme one is provided referring to the drawings.
Fig. 2 shows the method flow diagrams for supporting dual link of second embodiment according to the present invention.The implementation
Example corresponds to the case where sending the control signaling of MAC layer by master base station.
In fig. 2, in step s 201, master base station wants that changing it distributes to the state of the slave cell of user equipment, therefore
Which create the control signalings of corresponding MAC layer.In the control signaling of the MAC layer indicate master base station distribute to user equipment from
The state of cell, and the state that the slave cell of user equipment is distributed in the control signaling of the MAC layer from base station is all set
It is set to deactivation.
In step S02, user equipment based at least one of slave cell that user equipment is distributed to from base station whether
It is active to read the control signaling of MAC layer.
Specifically, when at least one of the slave cell for distributing to user equipment from base station is active, use
Family equipment is ignored from the slave cell for distributing to the user equipment in the control signaling for the MAC layer that master base station receives from base station
State.The relevant bit of state for the slave cell for distributing to user equipment with main plot is only read, and ignores those whole quilts
It is set as deactivated and distributes to the relevant bit of slave cell of user equipment from base station.
And when in the slave cell for distributing to user equipment from base station all in unactivated state, user equipment will read from
The state of the slave cell that the user equipment is distributed to from base station in the control signaling for the MAC layer that master base station receives.I.e. at this
Kind in the case of, user equipment by read in the control signaling of MAC layer with master base station and from base station distribute to user equipment from
The relevant all bits of state of cell.
Fig. 3 shows the method flow diagram for supporting dual link of third embodiment according to the present invention.The base station
The case where corresponding to the control signaling for sending MAC layer by master base station.
As shown in figure 3, distributing to the state of the cell of user equipment from base station by it is changed, and distributed at this time from base station
The slave cell of user equipment is currently all in deactivation status.
At this point, in step S301, instruction message is sent from base station to master base station, to allow master base station to be sent to user equipment
Include the control signaling of the MAC layer of the state for the slave cell that user equipment is distributed to from base station, wherein instruction message includes at least
The mark of user equipment, the call number of slave cell that user equipment is distributed to from base station and corresponding with call number from cell
State.
In step s 302, master base station is based on instruction message, generates and sent to user equipment the control signaling of MAC layer,
The control signaling of the wherein MAC layer is used to indicate all states from cell for distributing to user equipment, that is, include master base station and
The state of the slave cell of user equipment is distributed to from base station.
At this point, as it was noted above, due to distributing to the slave cell of user equipment from base station currently all in deactivation status,
User equipment is by the state of the slave cell for distributing to user equipment with master base station and from base station read in the control signaling of MAC layer
Relevant all bits.
In step S303, master base station receives the feedback of the control signaling in response to MAC layer from user equipment, and based on anti-
Feedback determines the transmission of the control signaling of MAC layer whether processing is over.
In step s 304, master base station is if it is determined that the transmission of the control signaling of MAC layer is over, then it is to from base station
Confirmation message is sent, indicates that the transmission of the control signaling of the MAC layer carried out by master base station is over.Thus hereafter from base station
It can again attempt to change the state for the slave cell that it is controlled, such as generate and send the control of the possible MAC layer of oneself
Signaling processed allows master base station to send the control signaling of MAC layer again.
Fig. 4 shows the method flow diagram for supporting dual link of the 4th embodiment according to the present invention.The base station
Corresponding to by from base station send MAC layer control signaling the case where.
As shown in figure 4, distributing to the state of the cell of user equipment from base station by it is changed, and distributed at this time from base station
It is at least one in the slave cell of user equipment to be active.
In step S401, the control signaling of MAC layer, the wherein control of MAC layer are generated and sent to user equipment from base station
Signaling processed only indicates to distribute to the state of the cell of user equipment from base station.
In step S402, user equipment, which will only be read in the control signaling of the MAC layer, to distribute to user from base station
The state of the slave cell of equipment.
Scheme two：
In order to avoid the limitation of scheme one, and the control signaling for still retaining MAC layer in R10 can be in any activation
Cell on the property that sends, scheme two can be used.Wherein, base station having to explicitly indicates the state of the slave cell of which base station
It is included in the control signaling of MAC layer.This is reservation bit " R " weight by the control signaling to the MAC layer defined in R10
It is new to define to realize.
In one embodiment of the invention, for implementation 2, sending the base station of the control signaling of MAC layer will retain
Bit " R " redefine with indicate MAC layer control signaling whether further include other base stations slave cell state.
Fig. 5 shows the format of the control signaling of MAC layer according to an embodiment of the invention.As shown in Figure 5：
R=1, master base station and all states from cell distributed from base station for user equipment are all included in the MAC layer
Control signaling in.Therefore, all bits that user equipment will be read in the control signaling of MAC layer.
The control signaling of R=0, MAC layer only include that the base station for the control signaling for sending this MAC layer is distributed for user equipment
Slave cell state.Therefore, user equipment will ignore the bit in relation to another base station.For example, if master base station has sent MAC
The control signaling of layer, then user equipment will ignore the bit of the state of the related slave cell from base station., whereas if being sent out from base station
The control signaling of MAC layer is sent, then user equipment will only read and be somebody's turn to do from the related bit from cell in base station.
The technology of this field should be appreciated that the definition of above-mentioned R=1 and R=0 are only illustrative, and not restrictive.Example
As the definition of R=1 and R=0 can be interchanged.
Various relevant situations are discussed in detail below.
When master base station wants to change the state of slave cell that it distributes to user equipment, the following two kinds operation may relate to：
Operation 1：
1. if master base station does not learn that the state for the slave cell for distributing to user equipment from base station, master base station will generate simultaneously
And the control signaling of MAC layer is sent, such as sent on main plot, and R is equal to 0.And in user equipment side, by
Master base station is come from the control signaling of R=0 and the MAC layer.Therefore, user equipment only pays attention to and the shape of the slave cell of master base station
The relevant bit of state, and ignore other bits.
2. on the other hand, if master base station learns the state for the slave cell for distributing to user equipment from base station, R is arranged
To be equal to 1, so that user equipment can also read the relevant ratio of state of the slave cell in the control signaling of MAC layer and from base station
It is special.This can for example be applied in following scene：Such as from base station it is all from cell all in deactivated state, Huo Zhe
Want to change the state for the slave cell that it is administered from base station there is no downlink scheduling resource from base station.Additionally, for this
Situation, master base station will also to the confirmation message that be over of transmission for the control signaling for sending MAC layer from base station, to permission from
The transmission of the control signaling of the subsequent MAC layer in base station.
Operation 2：
If master base station is thought so that sending the control signaling of MAC layer from base station, such as do not have downlink at master base station
Scheduling resource, then master base station assign them to the state of the slave cell of user equipment and be sent to from base station.From base station then generate
The control signaling of MAC layer, and R is set as 1.To in user equipment side, when receiving the MAC layer since base station
When control signaling, the relevant bit of state with the slave cell of master base station will not be ignored.
When wanting to change the state of slave cell that it distributes to user equipment from base station, may relate to operate as follows：
If not learning that master base station distributes to the state of the slave cell of user equipment from base station, from the MAC of base station transmission
The control signaling of layer only covers the state for the slave cell that user equipment is distributed to from base station, and the control signaling of the MAC layer exists
It is sent from base station with the setting of R=0.In user equipment side, user equipment will only read relevant with the slave cell from base station
Bit.
On the other hand, if learning that master base station distributes to the state of the slave cell of user equipment from base station, for example, it is such as above-mentioned
The situation (wherein, master base station wishes to inform the state of the slave cell of user equipment master base station from base station) of operation 2, then R is arranged
It is 1.In user equipment side, user equipment distributes to all shapes from cell of user equipment by reading with master base station and from base station
The relevant bit of state.Additionally, the control signaling of the master base station MAC layer end of transmission is also notified that from base station, so as to main base
The transmission for the control signaling for carrying out itself follow-up possible MAC layer of standing.
In addition, if for example there is no descending scheduling resource from base station side, although the slave cell that does not activate or having activation
Slave cell, but there is no scheduling resource, then master base station will be asked to send the control signaling of MAC layer to user equipment from base station.
At this point, in master base station side, the control signaling of MAC layer will be generated with R=1, to user equipment will read with master base station and from
Distribute to the relevant bit of all states from cell of user equipment in base station.
Based on above-mentioned detailed possible situation, it is seen that control signaling of the said program to the corresponding MAC layer of generation/transmission
It is not restricted.The delay in view of non-ideal backhaul is but needed herein.For example, being distributed for user equipment from base station by it
Slave cell state master base station is sent to by X2 signalings in the case of, the signaling will at most experience 60ms delays.That is, phase
The control signaling for the MAC layer answered will be sent at least after 60ms.If during this 60ms, if the descending scheduling from base station
Resource can be used, it is likely that the control signaling of another MAC layer oneself will be sent from base station.The problem of being retransmitted due to HARQ,
User equipment is possible to receive the control signaling of above-mentioned two MAC layer in a different order, to cause user equipment side
Mistake operation.Therefore, if another base station of base station requests sends the control signaling of MAC layer, requested base
The base station for needing notice to ask after the transmission for the control signaling for terminating MAC layer again of standing.To which at this moment, the base station of request is
The control signaling transmission that can start the possible MAC layer of itself, so as to avoid the above problem.
Said program 2 is described in detail below in conjunction with Fig. 6.Fig. 6 shows the 5th implementation according to the present invention
The method flow diagram for supporting dual link of example
As shown in fig. 6, in step s 601, indication bit is arranged in base station in the control signaling of MAC layer, user is indicated
Equipment reads all state (master base stations and from base station from cell for distributing to user equipment in the control signaling of MAC layer
Distribute to the state of the slave cell of user equipment), or indicate that user is distributed in the base station for only reading the control signaling for sending MAC layer
The state of the slave cell of equipment.The base station can be master base station, can also be from base station.
For example, in the case where master base station does not learn the state of slave cell for distributing to user equipment from base station, master base station
Indication bit in the control signaling of MAC layer is set to indicate that the user equipment only reads master base station and distributes to user equipment
Slave cell state, it is on the contrary then by the indication bit in the control signaling of MAC layer be set to indicate that user equipment read MAC layer
Control signaling in all states from cell for distributing to user equipment.For from base station, there is also similar situation,
This will not be detailed here.
In step S602, base station sends the control signaling of the MAC layer to user equipment.
In step S603, user equipment by the indication bit in the control signaling based on the MAC layer received from base station come
Read the state of the slave cell for distributing to user equipment in the control signaling of MAC layer.
Specifically, when indication bit instruction user equipment reads the user equipment distributed in the control signaling of MAC layer
When the state of all slave cells, user equipment reads all relevant bits in the control signaling of MAC layer.
Conversely, when indication bit instruction only read send MAC layer control signaling base station distribute to user equipment from
When the state of cell, user equipment will only read related to the state of cell of base station of control signaling of the MAC layer is sent
Bit.
It should be noted that above-described embodiment is only exemplary rather than limitation of the present invention.It is any without departing substantially from this hair
The technical solution of bright spirit should all be fallen under the scope of the present invention, this includes using in different embodiments to occur not
Same technical characteristic, installation method can be combined, to obtain advantageous effect.In addition, should not will be any attached in claim
Icon note, which is considered as, to be limited the claims involved；One word of " comprising " is not excluded for unlisted in other claims or specification
Device or step.
Claims (14)
1. a kind of method in first base station in the communication system being polymerize based on carrier wave for supporting dual link, wherein institute
It states first base station and at least administers one or more from cell, each there is activation and deactivation status, the method packet from cell
Include following steps：
When the first base station will change the state of slave cell that it distributes to user equipment, sends and ask to other base stations
Message, the request message include at least the mark of the user equipment；
Response message is received from other base stations, the response message includes at least the identifying of the user equipment, other described bases
Distribute to the call number of the slave cell of the user equipment and the state from cell corresponding with the call number in station；And
It is based on the response message, generates and sent to the user equipment control signaling of MAC layer, wherein the MAC layer
Control signaling is used to indicate all states from cell for distributing to the user equipment.
2. according to the method described in claim 1, it is characterized in that, the method further includes following steps：
The feedback of the control signaling in response to the MAC layer is received from the user equipment, and based on described in feedback determination
The transmission of the control signaling of MAC layer is whether processing is over；And
When determining that the transmission of the control signaling of the MAC layer is over, confirmation message is sent to other described base stations,
Indicate that the transmission of the control signaling of the MAC layer carried out by the first base station is over.
3. a kind of method in the second base station in the communication system being polymerize based on carrier wave for supporting dual link, wherein institute
It states the second base station and at least administers one or more from cell, each there is activation and deactivation status, the method packet from cell
Include following steps：
Request message is received from first base station, the request message includes at least the mark of user equipment；And
Response message is sent to the first base station based on the request message, the response message includes at least the user
The identifying of equipment, second base station distribute to the slave cell of the user equipment call number and with the call number pair
The state for the slave cell answered.
4. according to the method described in claim 3, it is characterized in that, the method further includes：
Before receiving confirmation message from the first base station, do not again attempt to change second base station distribute to it is described
The state of the slave cell of user equipment, wherein the control for the MAC layer that the confirmation message instruction is carried out by the first base station is believed
The transmission of order is over.
5. a kind of method in master base station in the communication system being polymerize based on carrier wave for supporting dual link, wherein in institute
It states in communication system, the master base station administers a main plot and/or one or more from cell, and one or more is administered from base station
It is a that each there is activation and deactivation status from cell from cell,
Described method includes following steps：
When the master base station will change the state of slave cell that it distributes to user equipment, generate and to the user equipment
The control signaling of the first MAC layer is sent, wherein the control signaling instruction of first MAC layer is described to distribute to the use from base station
The state of the slave cell of family equipment is all in deactivation status, and the control signaling of first MAC layer also indicates the master
Distribute to the state of the slave cell of the user equipment in base station；Or
Described method includes following steps：
Instruction message is received from base station from described, the instruction message is used to indicate the master base station and is sent out to the user equipment
Send the control signaling of the second MAC layer of the state including the slave cell for distributing to the user equipment from base station, wherein institute
Instruction message is stated including at least the identifying of the user equipment, the rope of the slave cell for distributing to the user equipment from base station
Quotation marks and the state from cell corresponding with the call number；And
It is based on the instruction message, generates and sent to the user equipment control signaling of second MAC layer, wherein institute
The control signaling for stating the second MAC layer is used to indicate all states from cell for distributing to the user equipment.
6. according to the method described in claim 5, it is characterized in that, from it is described from base station receive instruction message in the case of,
The method is further comprising the steps of：
The feedback of the control signaling in response to second MAC layer is received from the user equipment, and is determined based on the feedback
The transmission of the control signaling of second MAC layer is whether processing is over；And
When determining that the transmission of the control signaling of second MAC layer is over, confirmation message is sent from base station to described,
It indicates to be over by the described 2nd MAC layers of the transmission of control signaling that the master base station carries out.
7. a kind of method from base station for supporting dual link in the communication system being polymerize based on carrier wave, wherein in institute
It states in communication system, master base station one main plot of administration and/or one or more are described to administer one or more from base station from cell
It is a from cell, each from cell have activation and deactivation status, described method includes following steps：
When it is described will change state that it distributes to the cell of user equipment from base station when,
If at least one of the cell for distributing to the user equipment from base station is active, generate and to
The user equipment sends the control signaling of MAC layer, wherein the control signaling of the MAC layer only indicate described in distributed to from base station
The state of the cell of the user equipment；
If described distribute to the slave cell of the user equipment currently all in deactivation status, to the main base from base station
It stands and sends instruction message, set with allowing the master base station to distribute to the user from base station including described in user equipment transmission
The control signaling of the MAC layer of the state of standby slave cell, wherein the instruction message include at least the user equipment mark,
The call number of the slave cell that the user equipment is distributed to from base station and the shape from cell corresponding with the call number
State.
8. the method according to the description of claim 7 is characterized in that in the cell for distributing to the user equipment from base station
Currently all in deactivation status in the case of, the method further includes following steps：
Before receiving confirmation message from the master base station, do not again attempt to change described in distribute to the user from base station and set
The state of standby slave cell, wherein the confirmation message indicates the transmission of the control signaling of the MAC layer carried out by the master base station
It is over.
9. a kind of method in user equipment in the communication system being polymerize based on carrier wave for supporting dual link, wherein
In the communication system, master base station administers a main plot and/or one or more from cell, administers one or more from base station
From cell, each there is activation and deactivation status from cell, described method includes following steps：
It is read based on whether at least one of the slave cell for distributing to the user equipment from base station is active
The control signaling of MAC layer, the control signaling of the MAC layer is taken to be used to indicate the shape for the slave cell for distributing to the user equipment
State,
Wherein connect based on whether at least one of the slave cell for distributing to the user equipment from base station is active
The control signaling for receiving MAC layer further comprises：
Control signaling for the MAC layer received from the master base station,
When at least one of described slave cell for distributing to the user equipment from base station is in the state of activation, institute
State user equipment ignore from the control signaling for the MAC layer that the master base station receives described in distribute to the user from base station and set
The state of standby slave cell, the master base station only read in the control signaling of the MAC layer distribute to the user equipment
From the state of cell；
When in the slave cell for distributing to the user equipment from base station all in the deactivation status, the user
Equipment read from the control signaling for the MAC layer that the master base station receives described in distribute to from base station and the master base station described in
The state of the slave cell of user equipment.
10. according to the method described in claim 9, it is characterized in that, based on from base station distribute to the user equipment from small
Whether at least one of area, which is active, is carried out the control signaling of receiving mac layer and further comprises:
For from it is described from base station receive MAC layer control signaling,
Only read the state of the slave cell that the user equipment should be distributed to from base station in the control signaling of the MAC layer.
11. a kind of method in first base station in the communication system being polymerize based on carrier wave for supporting dual link, wherein institute
It states first base station and at least administers one or more from cell, each there is activation and deactivation status, the method packet from cell
Include following steps：
Indication bit is set in the control signaling of MAC layer, and instruction user equipment reads point in the control signaling of MAC layer
All states from cell of user equipment described in dispensing, or instruction only read the first base station and distribute to the user and set
The state of standby slave cell；And
The control signaling of the MAC layer is sent to the user equipment.
12. according to the method for claim 11, which is characterized in that the first base station is master base station,
In the case where the master base station does not learn the state of slave cell for distributing to the user equipment from base station, the main base
It stands and the indication bit in the control signaling of the MAC layer is set to indicate that the user equipment only reads the master base station
Distribute to the state of the slave cell of the user equipment；Or
In the case where the master base station learns the state of slave cell for distributing to the user equipment from base station, the master base station
The indication bit in the control signaling of the MAC layer is set to indicate that the user equipment reads the control letter of MAC layer
All states from cell for distributing to the user equipment in order.
13. according to the method for claim 11, which is characterized in that the first base station be from base station,
It is described do not learn that master base station distributes to the state of slave cell of the user equipment from base station in the case of, it is described from base
Standing, it is described from base station that the indication bit in the control signaling of the MAC layer is set to indicate that the user equipment is only read
Distribute to the state of the slave cell of the user equipment；Or
When it is described learn that master base station distributes to the state of slave cell of the user equipment from base station in the case of, it is described from base station
The indication bit in the control signaling of the MAC layer is set to indicate that the user equipment reads the control letter of MAC layer
All states from cell for distributing to the user equipment in order.
14. a kind of method in user equipment in the communication system being polymerize based on carrier wave for supporting dual link, wherein
In the communication system, base station includes master base station and from base station, and the master base station administers a main plot and/or one or more
It is described from base station administration one or more from cell from cell, each there is activation and deactivation status, the method from cell
Include the following steps：
Based on described to read from the indication bit in the control signaling of the master base station or the MAC layer received from base station
The state of the slave cell for distributing to the user equipment in the control signaling of MAC layer, wherein described in indication bit instruction
User equipment reads all states from cell for distributing to the user equipment in the control signaling of MAC layer, or instruction
Distribute to the state of the slave cell of the user equipment in the base station of the only control signaling of the reading transmission MAC layer.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310330335.5A CN104349466B (en) | 2013-07-31 | 2013-07-31 | Method for supporting dual link in the communication system polymerizeing based on carrier wave |
| PCT/IB2014/001446 WO2015015285A2 (en) | 2013-07-31 | 2014-07-15 | Method of supporting dual connectivity in a carrier aggregation based communication system |
| TW103124906A TW201517676A (en) | 2013-07-31 | 2014-07-21 | Method of supporting dual connectivity in a carrier aggregation based communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310330335.5A CN104349466B (en) | 2013-07-31 | 2013-07-31 | Method for supporting dual link in the communication system polymerizeing based on carrier wave |
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| CN104349466A CN104349466A (en) | 2015-02-11 |
| CN104349466B true CN104349466B (en) | 2018-08-24 |
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| CN201310330335.5A Active CN104349466B (en) | 2013-07-31 | 2013-07-31 | Method for supporting dual link in the communication system polymerizeing based on carrier wave |
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| Country | Link |
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| CN (1) | CN104349466B (en) |
| TW (1) | TW201517676A (en) |
| WO (1) | WO2015015285A2 (en) |
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| US10327276B2 (en) | 2015-06-12 | 2019-06-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and network nodes for evaluating a connection |
| CN107040346B (en) * | 2016-02-03 | 2020-09-01 | 中兴通讯股份有限公司 | User plane transmission channel processing method and base station |
| WO2018232724A1 (en) * | 2017-06-23 | 2018-12-27 | Nokia Technologies Oy | Controlling dual connectivity |
| US10869349B2 (en) * | 2017-08-01 | 2020-12-15 | Htc Corporation | Device and method of handling carrier aggregation and dual connectivity |
| WO2019090964A1 (en) * | 2017-11-13 | 2019-05-16 | Oppo广东移动通信有限公司 | Processing method for data replication and related device |
| CN110622578B (en) | 2017-11-13 | 2022-08-12 | Oppo广东移动通信有限公司 | Method for controlling data replication and related device |
| CN110035480B (en) | 2018-01-11 | 2021-06-22 | 华为技术有限公司 | Method, equipment and system for deactivating BWP |
| CN111224758B (en) * | 2018-11-23 | 2022-04-05 | 大唐移动通信设备有限公司 | Repeated transmission indication method, base station and terminal |
| CN116828553A (en) * | 2019-07-12 | 2023-09-29 | 华为技术有限公司 | Communication method and device |
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| CN103581918B (en) * | 2012-07-31 | 2018-06-01 | 夏普株式会社 | component carrier configuration method, base station and user equipment |
| KR102156886B1 (en) * | 2012-09-25 | 2020-09-17 | 삼성전자주식회사 | Method and apparatus to utilizing a plurality of cells in a communication system |
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2013
- 2013-07-31 CN CN201310330335.5A patent/CN104349466B/en active Active
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| WO2015015285A2 (en) | 2015-02-05 |
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| WO2015015285A3 (en) | 2015-12-10 |
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