CN103959881B - Method and apparatus for the interference coordination in wireless communication system - Google Patents
Method and apparatus for the interference coordination in wireless communication system Download PDFInfo
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- CN103959881B CN103959881B CN201280056793.8A CN201280056793A CN103959881B CN 103959881 B CN103959881 B CN 103959881B CN 201280056793 A CN201280056793 A CN 201280056793A CN 103959881 B CN103959881 B CN 103959881B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/27—Control channels or signalling for resource management between access points
Abstract
Embodiments of the invention disclose a kind of method and apparatus for the interference coordination being used in wireless communication system.This method includes：By disturbing mismatch of the eNB detections between the sub-frame configuration of its downlink transmission and the sub-frame configuration for the up-link transmission for being disturbed eNB；And to eNB relative narrow band transmission power RNTPs of the notice with mark is disturbed, wherein mark instruction RNTP is used for the resource allocation that scheduling is disturbed eNB up-link transmission.According to an embodiment of the invention, by fitting in the RNTP in issue 8/9, it is possible to implement for the Inter-Cell Interference Coordination (ICIC) of the active of eNB to eNB interference.In addition, RNTP similar OI message can be used together to realize more preferably two-way ICIC under eNB to eNB disturbed conditions with what it is as suggested previously.
Description
Technical field
Embodiments of the invention are related to the interference coordination in communication system, and more particularly relate to radio communication system
The method and apparatus of interference coordination in system.
Background technology
In LTE time division duplexs (TDD) system, up-link transmission and downlink transmission use time division multiplexing mode with
Time-division sub-frame resources are shared in time domain.That is some subframes of TDD be arranged to up-link transmission, and some subframes by with
Put and be used for downlink transmission.If it is apparent that match somebody with somebody between adjacent cell with same uplink and downlink subframe
Put, then as FDD system, base station be present to the dl interference of the user in adjacent cell and user to adjacent cell
Uplink channel interference.If the up-link between adjacent cell is different with downlink subframe configurations, except in base
Stand and base station is also introduced into outside the conventional interference between user to base station and user to user's interference.Specifically, in TDD systems
When different up-link transmission or downlink transmission subframe are distributed in the different districts of system, then it is possibly formed under cell
Mismatch between the subframe distribution of the subframe distribution of uplink transmission and the up-link transmission of adjacent cell, so as to generate
The interference of base station is arrived in interference, the i.e. base station (eNode B, eNB) that up-link is transmitted between (UL) and downlink transmission (DL)
The interference of user equipment is arrived with user equipment (UE).
In order to avoid inter base station interference and inter-user interference caused by different sub-frame configurations, typically in LTE TDD
Identical up-link and downlink subframe configurations are used between the adjacent cell of network.It is difficult with the surge of Network
To improve data capacity and cell edge spectrum efficiency by simple cell splitting.Therefore, draw in the LTE system of enhancing
Enter the common channel heterogeneous network of shared frequencies.So-called heterogeneous network is that addition is not more of the same race in conventional macro base station cellular system
Small base station/micro-base station of class.Because the business demand of the respective cell in heterogeneous network is different, so using identical sub-frame configuration
It is inappropriate.In addition, for the respective cell in heterogeneous network, up-link and downlink traffic ratio have the strong time
Variability, it is necessary to which dynamic community adjusting sub-frame configuration is changed with adapting to current business.Such dynamic cell sub-frame configuration pair
In future Web Service Deployment be a kind of natural tendency, this be TDD frequency spectrums operation common objective.Under this background, such as
What solves the distinctive base station of TDD system becomes pressing problem to base station and user to user's interference.
In LTE issues 8/9, there is three kinds of interference coordinations letter for performing Inter-Cell Interference Coordination (ICIC) in frequency domain
Order, i.e., with respect to narrow band transmission power (RNTP), high interference designator (HII) and overload indicator (OI).In issue 10,
With the addition of almost blank subframe (ABS) with time domain perform Inter-Cell Interference Coordination.These signalings can be used for reducing base station pair
Interference of the interference and user equipment of user equipment to base station.
But above ICIC methods can not by directly or be efficiently used for reduce TDD system in up-link transmission with
Interference between downlink transmission, reason are described as follows：
In issue 8/9, the triggering RNTP per 200ms, so as to which ICIC message is not triggered frequently, this is for TDD dynamic weights
New configuration is unsuitable.In addition, in issue 8/9, ICIC message do not have time tag be used for indicate it is sub in which TDD conflict
ICIC is used in frame.
Although the time domain ICIC message (almost blank subframe ABS) in issue 10 may also be used for reduction, BS to BS is done
Disturb, but its spectrum efficiency is very low, because BS to BS interference levels change in frequency domain, and not and different user devices
Up-link transmission corresponding to all frequency resources be required for protecting.Such as in the cell the user equipment of the heart have it is relatively large
Power rise scope, and it up-link transmission do not influenceed by the downlink transmission of adjacent cell significantly.As
As a result, without special protection it.
More importantly, existing ICIC is mainly used to reduce eNB to UE interference and UE to eNB interference.Even if they can be
It is used for reducing eNB to eNB interference and UE to UE interference in some circumstances, but different value or additional letter must be provided to ICIC
Breath, so as to up-link transmission downlink transmission between interference can be different from it is traditional up-link transmission and
Interference between up-link transmission and the interference between downlink transmission and downlink transmission.Such as in issue 8/9
In RNTP be applied to include all subframes of non conflicting subframe and conflict subframe.It is apparent that interference in both cases is complete
It is complete different.If using RNTP, RNTP should have individually value.
In order to make up the shortage of the specific ICIC methods of TDD, the signaling that can be fitted in existing issue, such as adaptation are existing
There are signaling, such as high interference designator (HII) and the overload indicator (OI) in issue 8/9, so as to which they are respectively applied to UE
To UE interference and BS to BS interference.Known similar OI signaling is passive solution, and only to being disturbed the upper of eNB
During the interference excess load of line link, being disturbed eNB, just passively notice disturbs eNB to ask to disturb eNB to carry out corresponding adjustment.By
Catastrophic network failure will be caused in eNB to eNB interference, so only this passive mode is inadequate.Therefore by dry
Take steps to avoid this interference to be crucial and beneficial before disturbing eNB interference excess load.
The content of the invention
In view of in the prior art the shortcomings that, embodiments of the invention are provided for the interference coordination in wireless communication system
Method and apparatus.According to an aspect of the present invention, there is provided a kind of method for the interference coordination being used in wireless communication system, should
Method includes：Transmitted by disturbing eNB detections in the sub-frame configuration of its downlink transmission with being disturbed eNB up-link
Mismatch between sub-frame configuration；And to eNB relative narrow band transmission power RNTPs of the notice with mark is disturbed, wherein should
Mark instruction RNTP is used for the resource allocation of schedules uplink transmission by being disturbed eNB.
According to another aspect of the present invention, a kind of method for the interference coordination being used in wireless communication system is also provided, should
Method includes：By be disturbed eNB receive with mark relative narrow band transmission power RNTP, wherein the mark indicate RNTP by by
ENB is disturbed to be used for the resource allocation of schedules uplink transmission；And by being disturbed eNB based on the work(on frequency domain in RNTP
Rate distributed intelligence carrys out the resource allocation of schedules uplink transmission.
According to another aspect of the invention, a kind of device for the interference coordination being used in wireless communication system is also provided, should
Device includes：Detection means, it is arranged to by disturbing eNB detections in the sub-frame configuration of its downlink transmission with being disturbed
Mismatch between the sub-frame configuration of eNB up-link transmission；And distributor, it is arranged to lead to being disturbed eNB
Know that the relative narrow band transmission power RNTP with mark, wherein mark instruction RNTP are used for dispatching uplink chain by being disturbed eNB
The resource allocation of road transmission.
According to still another embodiment of the invention, a kind of device for the interference coordination being used in wireless communication system is also provided,
The device includes：Reception device, it is arranged to receive the relative narrow band transmission power RNTP with mark by being disturbed eNB,
Wherein mark instruction RNTP is used for the resource allocation of schedules uplink transmission by being disturbed eNB；And dispatching device, by with
Put for by being disturbed eNB based on the power distribution information on frequency domain in RNTP come the resource of schedules uplink transmission point
Match somebody with somebody.
According to an embodiment of the invention, by fitting in the RNTP in issue 8/9, it is possible to implement disturbed for eNB to eNB
Active Inter-Cell Interference Coordination (ICIC).In addition, RNTP can as suggested previously as together with similar OI message
Using, more preferably two-way ICIC is thus realized under eNB to eNB disturbed conditions.
Brief description of the drawings
The other purposes and effect of the present invention will pass through the following description more thorough explanation referring to the drawings to the present invention
And become more apparent upon and be readily appreciated that, in the accompanying drawings：
Fig. 1 illustrates the flow chart of the method according to an embodiment of the invention for interference coordination；
The flow chart of the method for interference coordination of Fig. 2 diagrams according to another embodiment of the present invention；
Fig. 3 diagrams example according to an embodiment of the invention that RNTP is applied to TDD interference coordinations；
Fig. 4 illustrates the block diagram of the device according to an embodiment of the invention for interference coordination；And
The block diagram of the device for interference coordination of Fig. 5 diagrams according to another embodiment of the present invention.
More than all in each figure, similar label indicates identical, similar either character pair or function.
Embodiment
Embodiments of the invention are more particularly described and described below in reference to accompanying drawing.It should be noted that the accompanying drawing and reality of the present invention
Apply example only for the purposes of illustration, not for limiting the scope of the invention.
Flow chart in the various figures and block diagram diagram system according to various embodiments of the present invention, method and apparatus can
Framework, function and the operation that can implement.In this regard, each block in flow chart or block diagram can represent module,
The part of the part of program segment or code, wherein module, program segment or code includes being used to implement defined logic function
One or more executable instruction.It should also be noted that in some alternatives, the function of indicating in block diagrams also may be used
With with the order different indicated in the various figures occur.For example, according to involved function, two indicate successively
Block can be substantially parallel or performed sometimes according to reverse order.It is it should also be noted that each in block diagram and/or flow chart
The combination of block and the block in block diagram and/or flow chart can be by the special base for performing defined function or operation
Implement in the system of hardware, or implemented by the combination of specialized hardware and computer instruction.
In the present invention, user equipment (UE) can be terminal, such as mobile phone, the personal digital assistant of various species
Or pocket computer etc. (PDA).ENB can be macro base station, micro-base station, Femto cell or relay base station.
By referring to following description of the accompanying drawing to the preferred embodiment of the principle of the present invention, further feature of the invention and excellent
Point will be apparent.
As mentioned previously, embodiments of the invention be can apply to wherein be likely to occur UE to UE or eNB is arrived
The various wireless systems of eNB interference.In general, distributed in neighbor cell using different up-links and descending chain circuit frame
When, for example when these neighbor cells from different operators or neighbor cell belong to heterogeneous networks, (such as one is LTE-
FDD, another be LTE-TDD) when, UE to UE or eNB to eNB interference be likely to occur.UE to UE or eNB to eNB interference
May also occur in other system, such as device-to-device communication system.For example, in the following description, root is provided
According to the wireless communication system of time division duplex (TDD) operation as an example, so that the exemplary embodiment of the present invention is described in detail.
As mentioned above, prior art only discloses a kind of method for the passive type for avoiding eNB to eNB from disturbing.Cause
This, it is necessary to take measures to avoid such interference before eNB interference excess load is disturbed, this is crucial and beneficial.
According to an embodiment of the invention, by designing the specific frequency domain work(of TDD to perform the interference eNB of downlink transmission
To retain some resources, eNB to eNB interference ICIC is carried out rate designator.It can accordingly be adjusted by being disturbed eNB
Uplink transmission scheduling, therefore the UE (such as UE at the edge of cell) being seriously disturbed can provide in the low interference of reservation
By normal service in the case of source.
Specifically, in an embodiment of the present invention, it is adapted to by adding UL-DL information units and extends existing issue
RNTP message in 8/9, to strengthen backhaul (i.e. X2) to support faster eNB to eNB interference coordinations.In addition, fresh information list
First (IE) directly strengthens existing RNTP to adapt to UL-DL ICIC service conditions.
Below with reference to Fig. 1, the interference according to an embodiment of the invention being used in wireless communication system of figure diagram
The flow chart of the method for coordination.It should be understood that the step in method 100 as shown in Figure 1 is for exemplary purposes.Method 100 can
With including additionally and/or alternatively step.
After the beginning of method 100, in step S101, sub-frame configuration of the interference eNB detections in its downlink transmission
Mismatch between the sub-frame configuration that up-link with being disturbed eNB is transmitted.Carried in step S102 to eNB notices are disturbed
The relative narrow band transmission power RNTP of mark, the wherein mark instruction RNTP are used for by being disturbed eNB schedules uplink transmissions
Resource allocation.
Known RNTP interacted by X2 interface between eNB with transmit between them in the future in some period they from
Oneself downlink energy distribution information.The RNTP of each eNB notices indicates the eNB within some time in the future in each frequency
The relative magnitude of transimission power in resource.
According to an embodiment of the invention, the RNTP with mark be used for reflection interference eNB downlink transmission to by
Disturb the interference of eNB up-link transmission.Specifically, in eNB to eNB interference, the RNTP with mark is being mismatched
It is effectively but invalid in matching subframe in subframe.In matching subframe, (RNTP can be still set using existing RNTP
It is masked as "false").
According to one embodiment of present invention, RNTP also includes the power distribution information on frequency domain, and based on interference
ENB downlink transmission and it is disturbed the eNB power distribution of up-link transmission and adjusts power distribution information.
According to one embodiment of present invention, interference eNB detects the son in its downlink transmission by X2 signalings
Frame configures and is disturbed the mismatch between the sub-frame configuration of eNB up-link transmission, or comes by its interference information
Detect its downlink transmission sub-frame configuration and be disturbed eNB up-link transmission sub-frame configuration between not
Match somebody with somebody.
According to one embodiment of present invention, mark can be individual bit or bitmap.
According to one embodiment of present invention, mark can be the individual bit for distinguishing RNTP and existing RNTP；And
And when individual bit is effective, to all mismatch subframe distribution RNTP.Such as in absence of such a match, among 10 subframes
4 subframes mismatch, therefore the RNTP with individual bit mark can apply to the mismatches of 4 subframes.
According to one embodiment of present invention, mark is bitmap, and the bit in bitmap be assigned to it is different not
With subframe, to indicate the mismatch subframe being applied to the RNTP indicated.Such as 4 subframes among 10 subframes are not
During matching, 2 subframes in 4 subframes are applied to a RNTP, and two other subframe is applied to another RNTP.At this
Point, the mismatch subframe that the RNTP with mark is applied to can be indicated with bitmap mode.
Known ABS is almost blank subframe.In this subframe, eNB is not worked and either lived with low-power operation or not
Jump.Other subframes are the subframes of normal work.According to one embodiment of present invention, to non-zero Tx power ABS distribution with mark
The RNTP of will, and the power distribution information in RNTP is adjusted, so as to be disturbed the resource of eNB schedules uplink transmissions point
Match somebody with somebody.
The example of the concrete structure of the RNTP according to the present invention is described below.
Based on the existing definition of the RNTP in standard TS36.423 9.2.19 sections, embodiments of the invention adaptation is existing
There is RNTP concrete structure.The RNTP being adapted to as shown in table 1 is included in power distribution information on frequency domain, i.e. in the cell
The instruction of DL power limits per Physical Resource Block (PRB) and neighbouring eNB are used to disturb the other information required for known scheduling
Instruction.In addition, the RNTP of adaptation also includes " TDD UL-DL mismatch mark " and " non-zero Tx power ABS marks ".
In the above example of RNTP concrete structure, the enhancing used RNTP is described.It is existing to be disturbed eNB2 adaptations
High eNB to the eNB interference of OI and report from eNB1.In addition, receive this similar to OL report when, interference eNB can be with
The RNTP of adaptation is set with more appropriate and adequate values.
Below with reference to Fig. 2, the interference being used in wireless communication system of figure diagram according to another embodiment of the present invention
The flow chart of the method for coordination.It should be understood that the step in method 200 as shown in Figure 2 is only for the purposes of illustration.Method 200
Additionally and/or alternatively step can be included.
After the beginning of method 200, in step S201, it is disturbed eNB and receives the RNTP with mark, the wherein mark refers to
Show that RNTP is used for the resource allocation by being disturbed eNB schedules uplink transmissions.In step S202, it is disturbed eNB and is based on RNTP
In the power distribution information on frequency domain carry out the resource allocation of schedules uplink transmission.
According to one embodiment of present invention, this method is further comprising the steps of：When receiving the RNTP with mark, by
Disturb eNB request interference eNB notice interference eNB TDD subframes assignment.
It will hereafter be described with specific application example according to an embodiment of the invention for dry in tdd systems
The method for disturbing coordination.According to the adaptation for existing issue 8/9, RNTP is notified to eNB is disturbed by enabling interference eNB,
The RNTP carries individual bit " mark ", for be disturbed eNB notice RNTP associated with TDD sub-frame configurations.The bit of addition
" mark " may be used to indicate that the mismatch between TDD up-link and downlink transmission subframe configuration.
The RNTP of eNB reception adaptations is being disturbed, with the resource allocation of schedules uplink transmission, is being arrived to mitigate eNB
ENB is disturbed, such as distributes UL resources corresponding with low transmission power indicated in RNTP in the UE of cell edge.According to
One embodiment of the present of invention, by disturbing eNB X2 interface to notify that the cell information in service includes to eNB is disturbed
TDD subframes are assigned and (for details, refer to the TDD subframes assignment in TS36.423 9.2.8 sections).
According to one embodiment of present invention, do not change the information unit structure of the RNTP in issue 8/9 but add
There is optional flag bit (i.e. TDD UL-DL mismatch mark).
Simplest method is will largely to leave network implementation for.In other words, eNB is disturbed to be notified to eNB is disturbed in frequency
The mismatch (if present) of transimission power distribution and the distribution of TDD subframes on domain.This mismatch can be attributed in the enb
Any eNB at change.ID is distributed due to by triggering or regularly sending existing TDD subframe with signaling, so this
The RNTP of adaptation is provided for unmatched " indirect " IE as signaling.
When individual bit " mark " is effective, the value of the information unit in RNTP is variable, specifically for eNB to eNB
ICIC.Furthermore, it may be desired to some advanced wireless resources control (RRC) signalings or L1/L2 signalings.
If using different " R_B " in TDD UL-DL conflict subframes, must by RRC to UE with signaling
Information unit " R_B " in RNTP message.
When disturbing the PDCCH OFDM symbols number of occupancy of eNB predictions to change in TDDUL-DL conflict subframes, this
PCFICH in a little frame correspondingly changes.
According to one embodiment of present invention, cline frequency resource of the eNB assignments with similar transmission power level is disturbed.
Because the UL resources for UE are distributed in a continuous manner.
With TDD UL-DL mismatch mark this RNTP only in TDD UL-DL conflict subframes effectively and efficiently
Until receive new Load Information Message, the message carry the interference eNB of renewal or be disturbed eNB renewal RNTP or
Person TDD subframes assign.
Can also be according to an embodiment of the invention with individual bit " mark using what is proposed in other interference scenes
The method of will ".Such as there are coexistence problems of the RNTP in non-zero Tx power ABS.And if addition individual bit " mark ", then
RNTP applied to all subframes can also especially be used to refer to the RNTP states in non-zero Tx power ABS.
The example according to an embodiment of the invention that RNTP is applied to TDD interference coordinations is described below.
Fig. 3 shows the example according to an embodiment of the invention that RNTP is applied to TDD interference coordinations.In Fig. 3
It is shown, eNB1 with reference in its coverage center UE1 and edge UE1 ' perform downlink transmission, and eNB2 on
Center UE2 and edge UE2 ' in its coverage perform up-link transmission.The downlink mismatched in eNB1 passes
Exist between the defeated transmission with eNB2 up-link.In this point, there is punching in interference eNB1 notices between eNB2 and itself
Prominent DL-UL subframes.In order to avoid potential eNB to eNB is disturbed, the specific RNTP of eNB1 configurations TDD, the RNTP i.e. with mark,
And notify this configuration to eNB2 via X2 interface.Accordingly, in the DL subframe that conflicts, eNB1 is with relatively low transimission power
Its center of housing estate UE1 is dispatched in the upper section of bandwidth and with high power in its cell edge of the relatively low partial scheduling of bandwidth
UE1’。
Once receiving the RNTP of adaptation from eNB1, it is disturbed eNB2 and its tune is adaptively adjusted in response to interference coordination
Degree.In other words, among the UL subframe that conflicts, in the relatively low partial scheduling center of housing estate UE2 of bandwidth, and in the higher of bandwidth
Partial scheduling cell edge UE2 '.
By this interference coordination, the UL transmission from cell edge UE2 ' to eNB2 will not be transmitted by the DL from eNB1
Strong jamming.In other words, eNB to eNB interference will be mitigated.Meanwhile will not from the eNB1 DL transmission received in cell edge UE1
The strong jamming transmitted by the UL from cell edge UE2 '.In other words, strong UE to UE interference can also be removed.
Referring now to Fig. 4, the interference according to an embodiment of the invention being used in wireless communication system of figure diagram
The block diagram of the device of coordination.Device 400 includes detection means 401 and distributor 402 as shown in Figure 4.The quilt of detection means 401
It is configured to disturb eNB detections in the sub-frame configuration of its downlink transmission and the son for the up-link transmission for being disturbed eNB
Mismatch between frame configuration.Distributor 402 is arranged to be disturbed eNB to being disturbed eNB notices with mark
RNTP, the wherein mark instruction RNTP are used for the resource allocation for being disturbed eNB schedules uplink transmissions.
According to one embodiment of present invention, RNTP also includes the power distribution information on frequency domain, and based on interference
ENB downlink transmission and it is disturbed the eNB power distribution of up-link transmission and adjusts power distribution information.
According to one embodiment of present invention, eNB is disturbed to detect the subframe in its downlink transmission by X2 signalings
The mismatch between the sub-frame configuration of eNB up-link transmission is configured and be disturbed, or is examined by its interference information
Survey its downlink transmission sub-frame configuration and be disturbed eNB up-link transmission sub-frame configuration between not
Match somebody with somebody.
According to one embodiment of present invention, mark is the individual bit for distinguishing RNTP and existing RNTP；And
When individual bit is effective, to all mismatch subframe distribution RNTP.
According to one embodiment of present invention, mark is bitmap, and the bit in bitmap be assigned to it is different not
With subframe, to indicate the mismatch subframe being applied to the RNTP indicated.
According to one embodiment of present invention, distribution apparatus carries the RNTP of mark to non-zero Tx power ABS distribution, and
The power distribution information in RNTP is adjusted, so as to be disturbed the resource allocation of eNB schedules uplink transmissions.
Below with reference to Fig. 5, the interference being used in wireless communication system of figure diagram according to another embodiment of the present invention
The block diagram of the device of coordination.Device 500 as shown in Figure 5 includes reception device 501 and dispatching device 502.Reception device 501
It is arranged to be disturbed eNB and receive to be used to be disturbed eNB dispatching uplinks with the RNTP indicated, wherein mark instruction RNTP
The resource allocation of link transmission.Dispatching device 502 is arranged to be disturbed eNB based on the power on frequency domain in RNTP point
The resource allocation of cloth message scheduling up-link transmission.
According to one embodiment of present invention, the device also includes being arranged to be disturbed eNB in reception with mark
RNTP when request interference eNB notice interference eNB TDD subframes assignment request unit.
Pass through above description, it is seen that the method and apparatus according to an embodiment of the invention for interference coordination are can be pre-
First prevent from disturbing the ICIC solutions of the active of excess load.Specifically, it is of the invention because different UL-DL subframes are distributed
Embodiment provides a kind of frequency domain ICIC methods of the active for eNB to eNB interference.Signaling message maintains and existing issue 8/9
Substantially the same and only very limited change.The RNTP signalings of adaptation help quickly to control TDD eNB to eNB interference and son
Frame reconfigures.In addition, the similar RNTP proposed signaling can be easily extended for ICIC (examples under other circumstances
RNTP such as under non-zero through-put power ABS).
Although illustrating embodiments of the invention on TDD system, embodiments of the invention can be used for it
It is middle there is UE to UE either any wireless communication system of eNB to eNB interference, the system either just developed or future be
System.The present invention is unrestricted in this regard.
It should be noted that implement institute in an embodiment of the present invention with the combination of software, hardware or software and hardware
Disclosed method.Hardware components can be implemented using special logic；Software section can be stored in memory and by
Appropriate instruction execution system, such as microprocessor, personal computer (PC) or heavy-duty machines perform.In certain embodiments,
The present invention is implemented as software, includes but is not limited to firmware, resident software or microcode etc..
In addition, embodiments of the invention also use available for computer or pass through the addressable meter of computer-readable medium
The form of calculation machine program product.These media provide by by computer either any instruction execution system use or will be by group
Close the program code used.In order to describe, computer is available or computer-readable medium can be any physical device, the dress
Put can include, store, passing on, propagate either transmission will by instruction execution system, device or equipment use or will be at it
The program used in combination.
Medium can be electricity, magnetic, optical, electromagnetic, infrared ray either semiconductor system (or device or equipment) or biography
Broadcast medium.The example of computer-readable medium includes semiconductor or solid-state memory, tape, mobile computer disk, deposited at random
Access to memory (RAM), read-only storage (ROM), hard disk and CD.The example of current optical disc includes compact-disc-read-only storage
(CD-ROM), compact disk-read/write (CD-R/W) and DVD.
It should be noted that in order that embodiments of the invention are more it is understood that omission depicted above is known to those skilled in the art
But may for implementing embodiments of the invention some required more specific ins and outs.Description of the invention is used
In example and description, not for exhaustive in the disclosed embodiment or limitation present invention.For ordinary skill people
Member, various modifications and changes are possible.
Therefore, it is to preferably explain the principle of the present invention and its practical application and make this to select and describe embodiment
Field those of ordinary skill it will be appreciated that all modifications and change fall within the protection domain defined in appended claims and
The essence of the present invention is not departed from.
Claims (16)
1. a kind of method for the interference coordination being used in wireless communication system, including：
Matched somebody with somebody by disturbing eNB to detect the sub-frame configuration of its downlink transmission with being disturbed the subframe that eNB up-link is transmitted
Mismatch between putting；And
ENB relative narrow band transmission power RNTPs of the notice with mark is disturbed to described, wherein described in the mark instruction
RNTP by it is described be disturbed eNB be used for schedules uplink transmission resource allocation, and with mark the RNTP by with
In the interference that reflection interference eNB downlink transmission is transmitted to the up-link for being disturbed eNB.
2. according to the method for claim 1, wherein the RNTP also includes the power distribution information on frequency domain, and base
In the downlink transmission of the interference eNB and the power distribution of the up-link transmission for being disturbed eNB, come
Adjust the power distribution information.
3. according to the method for claim 1, wherein the interference eNB detects its downlink transmission by X2 signalings
The sub-frame configuration and the up-link transmission for being disturbed eNB the sub-frame configuration between it is described not
Match somebody with somebody, or the interference information by it, the sub-frame configuration detected in its downlink transmission are disturbed eNB's with described
The mismatch between the sub-frame configuration of the up-link transmission.
4. according to the method for claim 1, wherein the mark is for distinguishing the single of the RNTP and existing RNTP
Bit；And when the individual bit is effective, the RNTP is assigned to all mismatch subframes.
5. according to the method for claim 1, wherein the mark is bitmap, and the bit in the bitmap is assigned to
Different mismatch subframes, the mismatch subframe being applied to so as to the RNTP that index strip has the mark.
6. the method according to claim 11, in addition to：
To the non-zero Tx power almost RNTP of the blank subframe ABS distribution with the mark, and adjusting in the RNTP
Power distribution information, to cause the resource allocation for being disturbed eNB schedules uplink transmissions.
7. a kind of method for the interference coordination being used in wireless communication system, including：
The relative narrow band transmission power RNTP with mark is received by being disturbed eNB, wherein the mark indicates the RNTP quilts
The resource allocation for being disturbed eNB and being used for schedules uplink transmission, and the RNTP with mark be used to reflect
The interference that the downlink transmission of the interference eNB is transmitted to the up-link for being disturbed eNB；And
ENB is disturbed based on the power distribution information on frequency domain in the RNTP come schedules uplink transmission by described
Resource allocation.
8. the method according to claim 11, in addition to：
When receiving the RNTP with the mark, the eNB that is disturbed asks the interference eNB to notify the interference
ENB TDD subframes assignment.
9. a kind of device for the interference coordination being used in wireless communication system, including：
Detection means, it is arranged to disturb eNB to detect the sub-frame configuration of its downlink transmission with being disturbed the up of eNB
Mismatch between the sub-frame configuration of link transmission；And
Distributor, it is arranged to be disturbed eNB relative narrow band transmission power RNTPs of the notice with mark to described, wherein
The mark indicates the RNTP by the resource allocation for being disturbed eNB and being used for schedules uplink transmission, and with mark
The RNTP of will be used to reflect that the downlink transmission of the interference eNB is transmitted to the up-link for being disturbed eNB
Interference.
10. device according to claim 9, wherein the RNTP also includes the power distribution information on frequency domain, and
The power distribution of the downlink transmission and the up-link transmission for being disturbed eNB based on the interference eNB,
To adjust the power distribution information.
11. device according to claim 9, wherein the interference eNB detects its downlink transmission by X2 signalings
The sub-frame configuration and the up-link transmission for being disturbed eNB the sub-frame configuration between it is described not
Match somebody with somebody, or the interference information by it, the sub-frame configuration detected in its downlink transmission are disturbed eNB's with described
The mismatch between the sub-frame configuration of the up-link transmission.
12. device according to claim 9, wherein the mark is for distinguishing the single of the RNTP and existing RNTP
Bit；And when the individual bit is effective, the RNTP is assigned to all mismatch subframes.
13. device according to claim 9, wherein the mark is bitmap, and the bit in the bitmap is allocated
To different mismatch subframes, the mismatch subframe being applied to so as to the RNTP that index strip has the mark.
14. device according to claim 9, wherein the distributor is to non-zero Tx power, almost blank subframe ABS divides
The RNTP of the mark is worn, and adjusts the power distribution information in the RNTP, described to be disturbed eNB
The resource allocation of schedules uplink transmission.
15. a kind of device for the interference coordination being used in wireless communication system, including：
Reception device, it is arranged to be disturbed eNB relative narrow band transmission power RNTPs of the reception with mark, wherein the mark
Will indicates the RNTP by the resource allocation for being disturbed eNB and being used for schedules uplink transmission, and with the institute of mark
State RNTP and be used for the interference for reflecting that the downlink transmission of the interference eNB is transmitted to the up-link for being disturbed eNB；
And
Dispatching device, be arranged to it is described be disturbed eNB based on the power distribution information on frequency domain in the RNTP come
The resource allocation of schedules uplink transmission.
16. device according to claim 15, in addition to：Request unit, it is arranged to described be disturbed eNB and receiving
The interference eNB is asked to notify the TDD subframes of the interference eNB to assign during to the RNTP with the mark.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2012/072565 WO2013138988A1 (en) | 2012-03-19 | 2012-03-19 | Method and apparatus for interference coordination in wireless communication system |
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| CN103959881B true CN103959881B (en) | 2017-12-15 |
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| WO (1) | WO2013138988A1 (en) |
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| US9516564B2 (en) | 2014-04-25 | 2016-12-06 | At&T Intellectual Property I, L.P. | Enhancement of a cell reselection parameter in heterogeneous networks |
| US9635566B2 (en) | 2014-04-25 | 2017-04-25 | At&T Intellectual Property I, L.P. | Enhancement of access points to support heterogeneous networks |
| US9621294B2 (en) | 2014-10-02 | 2017-04-11 | At&T Intellectual Property I, L.P. | Enhancement of inter-cell interference coordination with adaptive reduced-power almost blank subframes based on neighbor cell profile data |
| CN106603210B (en) * | 2015-10-19 | 2019-05-31 | 上海朗帛通信技术有限公司 | Dispatching method and device in a kind of narrow band transmission |
| CN107453834A (en) | 2016-05-31 | 2017-12-08 | 华为技术有限公司 | A kind of descending interference management method, base station and user equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877856A (en) * | 2010-07-02 | 2010-11-03 | 新邮通信设备有限公司 | Radio resource management method and system |
| CN102065490A (en) * | 2011-01-17 | 2011-05-18 | 大唐移动通信设备有限公司 | Method and equipment for coordinating downlink transmitting power between base stations |
| CN102196580A (en) * | 2011-06-22 | 2011-09-21 | 新邮通信设备有限公司 | Method for dynamically configurating TDD (Time Division Duplex) base station uplink and downlink subframe scale |
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| KR101547545B1 (en) * | 2009-04-20 | 2015-09-04 | 삼성전자주식회사 | A method for inter-cell interference coordination in a wireless communication system and an apparatus thereof |
| CN101932100A (en) * | 2009-06-19 | 2010-12-29 | 大唐移动通信设备有限公司 | Method for coordinating resource allocation of relay link among eNBs and eNBs |
| CN102149099B (en) * | 2011-04-08 | 2014-02-12 | 电信科学技术研究院 | Method and device for coordinating inter-cell interference |
-
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- 2012-03-19 WO PCT/CN2012/072565 patent/WO2013138988A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877856A (en) * | 2010-07-02 | 2010-11-03 | 新邮通信设备有限公司 | Radio resource management method and system |
| CN102065490A (en) * | 2011-01-17 | 2011-05-18 | 大唐移动通信设备有限公司 | Method and equipment for coordinating downlink transmitting power between base stations |
| CN102196580A (en) * | 2011-06-22 | 2011-09-21 | 新邮通信设备有限公司 | Method for dynamically configurating TDD (Time Division Duplex) base station uplink and downlink subframe scale |
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