CN101917729B - A kind of time domain interference indicating means, time-domain resource interference defining method and base station thereof - Google Patents
A kind of time domain interference indicating means, time-domain resource interference defining method and base station thereof Download PDFInfo
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- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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Abstract
A kind of time domain interference indicating means, time-domain resource interference defining method and base station thereof, this indicating means comprises: base station carries out the interference disturbed in the time-domain resource of instruction as required, determine the interference indication information of described time-domain resource, described time-domain resource take subframe as base unit; Described interference indication information is sent to adjacent base station by interference indication signaling by base station.According to this indicating means, base station can indicate the disturbed condition in time-domain resource to adjacent base station, so that adjacent base station carries out the coordinated scheduling of resource.This defining method comprises: after base station receives the configuration signal comprising time domain interference indication information, the quantity H of the value g of indication information and the time-domain resource of setting is disturbed according to time domain, will numbering X=g? mod? the time-domain resource of H is defined as the time-domain resource that will be subject to compared with minor interference.The method can except the interference between low adjacent base station.
Description
Technical field
The present invention relates to the communications field, especially relate to defining method and corresponding system that a kind of time domain disturbs the interference of indicating means, time-domain resource.
Background technology
Long Term Evolution (LTE, LongTermEvolution) radio frames (radioframe) in system comprises Frequency Division Duplexing (FDD) (FDD, FrequencyDivisionDuplex) frame structure of pattern and time division duplex (TDD, TimeDivisionDuplex) pattern.The frame structure of fdd mode, as shown in Figure 1, the radio frames of one 10 milliseconds (ms) is 0.5ms by 20 length, and time slot (slot) composition of numbering 0 ~ 19, time slot 2i and 2i+1 forms subframe (subframe) i that length is 1ms.
The frame structure of tdd mode, as shown in Figure 2, the radio frames of a 10ms is made up of two long fields (halfframe) for 5ms, and it is the subframe of 1ms that a field comprises 5 length, and subframe i is defined as 2 long time slot 2i and 2i+1 for 0.5ms.
In above-mentioned two kinds of frame structures, for standard cyclic prefix (NormalCP, NormalCyclicPrefix), a time slot comprises the symbol that 7 length are 66.7 microseconds (us), wherein the CP length of first symbol is 5.21us, and the CP length of all the other 6 symbols is 4.69us; For extended cyclic prefix (ExtendedCP, ExtendedCyclicPrefix), a time slot comprises 6 symbols, and the CP length of all symbols is 16.67us.Chronomere T
sbe defined as T
s=1/ (15000 × 2048) second; to each subframe in a radio frames; " D " represents the subframe being exclusively used in downlink transfer; " U " represents the subframe being exclusively used in uplink; " S " represents the special subframe being used for DwPTS, protecting interval (GP) and these three territories of UpPTS, and it is 30720T that their length obeys DwPTS, GP and UpPTS total length
s=1ms.Each subframe i is represented by 2 time slot 2i and 2i+1, and each time slot is long is T
slot=15360T
s=0.5ms.
LTETDD supports the up-downgoing switching cycle of 5ms and 10ms.If the downstream-to-upstream transfer point cycle is 5ms, special subframe can be present in two fields; If downstream-to-upstream transfer point cycle 10ms, special subframe is only present in first field.Subframe 0 and subframe 5 and DwPTS are always for downlink transfer.UpPTS and be exclusively used in uplink immediately following subframe after special subframe.
The version number of LTE corresponds to R8 (Release8), and its version number increasing version corresponding is R9 (Release9), and for LTE-Advance from now on, its version number is just R10 (Release10).Following three kinds of downlink physical control channels are defined: physical down control format indicating channel (PCFICH, PhysicalControlFormatIndicatorChannel) in LTE; Physical hybrid automatic repeat request indicator channel (PHICH, PhysicalHybridAutomaticRetransmissionRequestIndicatorCha nnel); Physical Downlink Control Channel (PDCCH, PhysicalDownlinkControlChannel).
Wherein, the information of PCFICH carrying is used to indicate the OFDM (OFDM transmitting PDCCH in a subframe, OrthogonalFrequencyDivisionMultiplexing) number of symbol, first OFDM symbol of subframe sends, place frequency location is determined by system descending bandwidth and cell ID (ID, Identity).
PHICH is for carrying acknowledgement/non-acknowledgement (ACK/NACK) feedback information of uplink transmission data.Number, the time-frequency location of PHICH can be determined by the system message in the Physical Broadcast Channel (PBCH, PhysicalBroadcastChannel) of the descending carrier at PHICH place and community ID.
PDCCH is used for bearing downlink control information (DCI, DownlinkControlInformation), comprising: uplink and downlink schedule information, and uplink power control information.The form (DCIformat) of DCI is divided into following several: DCIformat0, DCIformat1, DCIformat1A, DCIformat1B, DCIformat1C, DCIformat1D, DCIformat2, DCIformat2A, DCIformat3 and DCIformat3A etc.;
Senior LTE (LTE-Advanced, referred to as LTE-A) system is the evolution system of future generation of LTE system, in order to obtain larger bandwidth, have employed carrier aggregation (CarrierAggregation) technology, namely, several continuous component carrier frequency (frequency spectrum) (ComponentCarrier) be distributed in difference/similar frequency bands is adopted carrier aggregation (CarrierAggregation) technology aggregation, forms the operable more large bandwidth of LTE-Advanced.For the frequency spectrum after gathering, be divided into n component carrier frequency (frequency spectrum), the frequency spectrum in each component carrier frequency (frequency spectrum) is continuous print.
Interference generation is had for using between the neighbor cell of same frequency, at present, the method eliminating presence of intercell interference in LTE system comprises a kind of Inter-Cell Interference Coordination (Inter-CellInterferenceCoordination, ICIC) method, coordinates by frequency domain resource the interference avoiding adjacent area;
Along with Home eNodeB (HomeeNB, HeNB) is introduced, Home eNodeB and macro base station, between Home eNodeB, and interference between Microcell and macrocell is serious all the more; Because Physical Downlink Control Channel is that full bandwidth maps, so, the disturbance coordination method of frequency domain is also inapplicable, if two neighbor cells are transmitted in identical subframe, particularly powerful base station is for the interference of low power base station, down control channel transmission performance will be caused to decline, affect the reception of downlink data;
The method of current proposition offsets according to time-domain OFDM symbol based on the coordination of component carrier frequency and time domain frame structure, thus, reduce the interference of control channel between neighbor cell, but, the skew how carrying out time-domain OFDM symbol is not proposed.And, based on the method that component carrier frequency is coordinated, inapplicable for single carrier frequency network, and the method for time-domain OFDM symbol skew is just converted into the interference between down control channel and downstream data channel the interference between down control channel, when downstream data channel power is very strong time, down control channel is still by strong jamming.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of time domain interference indicating means and corresponding base station, and base station can indicate the disturbed condition in time-domain resource to adjacent base station, so that adjacent base station carries out the coordinated scheduling of resource.
In order to solve the problem, the invention provides a kind of time domain interference indicating means, comprising:
Base station carries out the interference disturbed in the time-domain resource of instruction as required, and determine the interference indication information of described time-domain resource, described time-domain resource take subframe as base unit;
Described interference indication information is sent to adjacent base station by interference indication signaling by base station.
Preferably,
Interference in described time-domain resource comprises: the interference be subject in described time-domain resource, and/or the interference will produced in described time-domain resource.
Preferably,
The unit of described time-domain resource is subframe, or the unit of described time-domain resource is the time-domain resource group of one or more subframe composition.
Preferably,
The unit of described time-domain resource is subframe, with N number of radio frames for one-period, carries out interference instruction in each cycle to k subframe, wherein, and k=1 ~ k
max, k
maxfor all number of sub frames that N number of radio frames comprises, N is positive integer.
Preferably,
The unit of described time-domain resource is time-domain resource group, and each time-domain resource group comprises one or more subframe, described time-domain resource group in the following manner in one divide:
The first, descending employing synchronous HARQ, using descending sub frame corresponding for each Down Procedure as a time-domain resource group, needs the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the Down Procedure number that system is cell configuration;
The second, using descending sub frame corresponding for each up process as a time-domain resource group, needs the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the up process number that system is cell configuration;
The third, using sub-frame of uplink corresponding for each up process as a time-domain resource group, need the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the up process number that system is cell configuration.
Preferably,
Described base station carries out the interference disturbed in the time-domain resource of instruction as required, when determining the interference indication information of described time-domain resource, is, according to interference strength, interference is divided into multiple grade, by level of interference as described interference indication information.
Preferably,
It is one or more in following scene that described interference indication information is sent to adjacent base station by described base station:
Micro-base station sends described interference indication information to adjacent macro base station, is used to indicate the disturbed condition that the terminal of cell edge region is subject in described time-domain resource under this micro-base station;
Home eNodeB sends described interference indication information to adjacent macro base station, is used to indicate the disturbed condition that terminal under this Home eNodeB is subject in described time-domain resource;
The peritropous Home eNodeB of macro base station and/or micro-base station send described interference indication information, are used to indicate the disturbed condition that this macro base station will produce in described time-domain resource;
The peritropous Home eNodeB of macro base station and/or micro-base station send described interference indication information, are used to indicate this macro base station susceptibility to descending interference in described time-domain resource;
Peritropous of micro-base station macro base station sends described interference indication information, is used to indicate this macro base station susceptibility to descending interference in described time-domain resource.
The peritropous Home eNodeB of macro base station and/or micro-base station send described interference indication information, are used to indicate this macro base station susceptibility to descending interference in described time-domain resource;
The peritropous macro base station in micro-base station sends described interference indication information, is used to indicate this micro-base station in described time-domain resource to the susceptibility of descending interference.
Correspondingly, base station of carrying out time domain interference instruction provided by the invention comprises:
Interference determining device, for carrying out as required disturbing the interference that the time-domain resource of instruction is subject to, and/or the interference will produced in described time-domain resource, determine the interference indication information of described time-domain resource, described time-domain resource take subframe as base unit;
Dispensing device, for being sent to adjacent base station by interference indication signaling by described interference indication information.
Preferably,
Described interference determining device for one-period, to k subframe carries out interference instruction in each cycle with N number of radio frames, wherein, and k=1 ~ k
max, k
maxfor all number of sub frames that N number of radio frames comprises, N is positive integer.
Preferably,
Described interference determining device carry out in units of time-domain resource group interference instruction, each time-domain resource group comprises one or more subframe, described time-domain resource group in the following manner in one divide:
The first, descending employing synchronous HARQ, using descending sub frame corresponding for each Down Procedure as a time-domain resource group, needs the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the Down Procedure number that system is cell configuration;
The second, using descending sub frame corresponding for each up process as a time-domain resource group, needs the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the up process number that system is cell configuration;
The third, using sub-frame of uplink corresponding for each up process as a time-domain resource group, need the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the up process number that system is cell configuration.
According to time domain interference indicating means of the present invention and corresponding base station, coordinated scheduling can be carried out according to the time domain interference instruction of adjacent base station in base station, thus the interference problem of the control channel interference solved between neighbor cell and data, ensure that throughput and the covering of system.
Another technical problem that the present invention will solve is to provide the defining method of a kind of time-domain resource interference, can reduce the mutual interference between base station.
In order to solve the problem, the invention provides the defining method of a kind of time-domain resource interference, the method comprises:
Base station receives the configuration signal comprising time domain interference indication information;
The quantity H of the value g of indication information and the time-domain resource of setting is disturbed according to time domain in described base station, the time-domain resource of numbering X=gmodH is defined as the time-domain resource that will be subject to compared with minor interference.
Preferably,
Described configuration signal is cell ID configuration signal, and described time domain interference indication information is cell ID; Or
Described configuration signal is core net configuration signal, and described time domain interference indication information is with numeric representation and can the parameter of a unique identification community in core net configuration signal.
Preferably,
The time-domain resource of described setting is in units of time-domain resource group, and each time-domain resource group comprises one or more subframe, described time-domain resource group in the following manner in one divide:
The first, descending employing synchronous HARQ, using descending sub frame corresponding for each Down Procedure as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum downstream process number of community;
The second, using descending sub frame corresponding for each up process as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum up process number of community;
The third, using sub-frame of uplink corresponding for each up process as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum up process number of community.
Correspondingly, the base station determining that time-domain resource is disturbed provided by the invention comprises:
Receiving system, for the configuration signal of receiving package containing time domain interference indication information;
Determining device, for the quantity H according to the time domain interference value g of indication information and the time-domain resource of setting, is defined as the time-domain resource that will be subject to compared with minor interference by the time-domain resource of numbering X=gmodH.
Preferably,
Described determining device is the value g according to cell ID, and the maximum up process of community and/or the quantity H of Down Procedure determine the numbering of the time-domain resource group be subject to compared with minor interference, each time-domain resource group comprises one or more subframe, and the one in the following manner divides:
The first, descending employing synchronous HARQ, using descending sub frame corresponding for each Down Procedure as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum downstream process number of community;
The second, using descending sub frame corresponding for each up process as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum up process number of community;
The third, using sub-frame of uplink corresponding for each up process as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum up process number of community.
The defining method that time-domain resource according to the present invention is disturbed and corresponding base station, base station can be known time-domain resource less for the interference of generation, thus carries out corresponding dispatch coordination, reduces and mutually disturbs.
Another technical problem that the present invention will solve is to provide a kind of time domain skew method for determination of amount, can offset the interference reduced between adjacent base station by time domain.
In order to solve the problem, the invention provides a kind of time domain skew method for determination of amount, comprising:
Base station receives configuration signal, this configuration signal comprise with numeric representation can the parameter g of unique identification community;
Described base station, according to the time domain maximum offset R of described parameter g and configuration, is subframe by the unit of following formula determination time domain side-play amount Offset:Offset=gmodR, R.
Preferably, described parameter g is cell ID.
Preferably, described R can be the maximum process number of cell configuration for system, and described process is up process and/or Down Procedure.
Time domain skew method for determination of amount of the present invention, can offset by time domain the interference reduced between adjacent base station.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the frame structure schematic diagram of fdd mode in prior art;
Fig. 2 is the frame structure schematic diagram of tdd mode in prior art;
Fig. 3 is the flow chart of the embodiment of the present invention one method;
Fig. 4 is the flow chart of the embodiment of the present invention three method.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Embodiment one
The present embodiment defines a kind of time domain interference indication signaling, is used to indicate the disturbed condition of time-domain resource.Scheduling of resource is carried out according to time domain interference instruction in base station, thus the interference problem of the control channel interference solved between neighbor cell and data.
The flow process of the present embodiment method as shown in Figure 3, comprising:
Step 110, the time-domain resource will carrying out disturbing instruction is determined in base station;
In the present embodiment, the unit of time-domain resource is subframe.As can be N number of radio frames be one-period, in each cycle, interference instruction be carried out to k subframe, wherein, k=1 ~ k
max, k
maxfor all number of sub frames that N number of radio frames comprises, N is positive integer, as can be 1,2,3,4 etc.
Need to carry out disturbing the subframe of instruction can be select the subframe of bearing system message or beep-page message, also can select according to the corresponding relation etc. of each process and subframe.
Step 120, base station is according to the interference be subject in described time-domain resource, and/or the interference will produced in described time-domain resource, determines the interference indication information of described time-domain resource;
In one example, the interference that time-domain resource is subject to can by carrying out detecting to obtain to the signal of other signal sources (as terminal, adjacent base station) in this time-domain resource.The signal that the interference of generation will can send according to this base station in this time-domain resource is determined by time-domain resource.
According to interference strength, interference can be divided into multiple grade, the interference strength in the corresponding certain limit of each grade, by level of interference as by the interference of generation and/or the indication information of interference that is subject to.
During concrete instruction, each needs carry out disturbing the subframe of instruction can corresponding n-bit, and this n-bit can represent 2
nplant level of interference.Like this, the signaling consumption being used to indicate the interference that time-domain resource is subject to is n × k, be used to indicate in time-domain resource by produce interference signaling consumption also for n × k, n be positive integer.
Step 130, the interference indication information of described time-domain resource is sent to adjacent base station by time domain interference indication signaling by base station;
Time domain interference indication signaling can be mutual between adjacent base station by X2 interface.
Need the interference indication information carrying out k the subframe disturbing instruction in one-period, can be sent by a time domain interference indication signaling, multiple time domain also can be divided into disturb indication signaling to send.As, as N=2, can be carried the interference indication information of a described k subframe by a time domain interference indication signaling, also can be carried by 2 time domain interference indication signalings, namely each time domain interference indication signaling only carries the time domain interference indication information of k/2 subframe in each radio frames.
Step 140, base station obtains the disturbed condition of adjacent base station in each time-domain resource of instruction, as the foundation of scheduling of resource according to the interference indication signaling that adjacent base station sends.
How to carry out scheduling of resource the present invention after knowing the disturbed condition in time-domain resource not to be limited, existing various scheduling strategy can be adopted.Such as, can according to the time domain interference instruction situation of neighbor cell, base station can be positioned at the terminal priority scheduling of cell edge region to disturbing in less subframe, will be positioned at the terminal priority scheduling of cell inner area to disturbing in larger subframe.
Correspondingly, the present embodiment additionally provides a kind of base station of carrying out time domain interference instruction, comprising:
Interference determining device, for carrying out as required disturbing the interference that the time-domain resource of instruction is subject to, and/or the interference will produced in described time-domain resource, determine the interference indication information of described time-domain resource, described time-domain resource take subframe as base unit;
Dispensing device, for being sent to adjacent base station by interference indication signaling by described interference indication information.
Further,
Described interference determining device for one-period, to k subframe carries out interference instruction in each cycle with N number of radio frames, wherein, and k=1 ~ k
max, k
maxfor all number of sub frames that N number of radio frames comprises, N is positive integer.
Further,
Described interference determining device carries out interference instruction in units of time-domain resource group, and each time-domain resource group comprises one or more subframe, and described time-domain resource group divides by above-mentioned 3 kinds of modes.
Below the several examples based on embodiment one are described.
Example one
This example is 1 cycle with 1 radio frames, carries out interference instruction to all subframes in each radio frames.Time domain interference indication signaling comprises two parts, and a part is used to indicate the disturbed condition that each subframe (10) is subject to, corresponding 1 bit of each subframe, e.g., represents be not interfered with 0,1 expression is disturbed; Another part is used to indicate the disturbed condition that will produce in each subframe, corresponding 1 bit of each subframe, e.g., represents do not produce interference with 0,1 represents generation interference.
Example two
This example is 1 cycle with 1 radio frames, carries out interference instruction to 4 in an each radio frames subframe (#0, #5, #6, #9).Time domain interference indication signaling comprises two parts, and a part is used to indicate the situation of the interference that these 4 subframes are subject to, and corresponding 2 bits of each subframe, represent four kinds of annoyance levels respectively, such as: " by force ", " in ", " gently " and "None".Another part is used to indicate the situation of interference will produced in these 4 subframes, and corresponding 2 bits of each subframe, represent four kinds of annoyance levels respectively, such as: " by force ", " in ", " gently " and "None".
Embodiment two
The present embodiment is compared with embodiment one, and the time-domain resource carrying out disturbing instruction is in units of time-domain resource group.And time-domain resource group take subframe as base unit, each time-domain resource group comprises one or more subframe.
The time-domain resource group of the present embodiment divides by the subframe that process is corresponding, as being the one in following mode:
The first, descending employing synchronous HARQ, using descending sub frame corresponding for each Down Procedure as a time-domain resource group, needs the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the Down Procedure number that system is cell configuration;
The second, using descending sub frame corresponding for each up process as a time-domain resource group, needs the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the up process number that system is cell configuration;
The third, using sub-frame of uplink corresponding for each up process as a time-domain resource group, need the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the up process number that system is cell configuration.
In the protocol, process is the entity of the expression carrying transmission block for cell configuration, and transmission block transmits in the subframe that process is corresponding, and after a transport block transmission terminates, another new transmission block can continue transmission in process.For asynchronous HARQ, re-transmission of blocks and the first block that passes can transmit in different process, and for synchronous HARQ, re-transmission of blocks and the first block that passes transmit in same process.Descending sub frame corresponding to up process refers to the descending sub frame of the ACK/NACK information transmitting up process, the descending sub frame that Down Procedure is corresponding refers to the descending sub frame of the downstream transmission blocks of transmission Down Procedure carrying, sub-frame of uplink corresponding to up process refers to the sub-frame of uplink of the uplink transmission block of the up process carrying of transmission, and concrete corresponding relation can refer to related protocol.The present embodiment carries out interference instruction in units of the subframe that process is corresponding, and the compatibility for system is better.
In the present embodiment, base station is according to the interference that described time-domain resource is subject to, and/or the interference will produced in described time-domain resource, when determining the interference indication information of described time-domain resource, also can by level of interference as by the interference of generation and/or the indication information of interference that is subject to, in time domain interference indication signaling, each time-domain resource group can corresponding n-bit, can represent 2
nplant level of interference.
When the interference indication information of described time-domain resource to be sent to adjacent base station by time domain interference indication signaling by base station, a time domain interference indication signaling can carry the time domain interference indication information of the one or more subframes in each time-domain resource group, or carries the time domain interference indication information of the one or more subframes in part time-domain resource group.
The method of scheduling of resource is carried out according to the interference indication information that adjacent base station sends in base station can be identical with embodiment one, no longer repeats.
Below the several examples based on embodiment two are described.
Example one
In this example, the descending sub frame corresponding by up process divides time-domain resource group.Up process i transmits from sub-frame of uplink n, the descending sub frame that this up process is corresponding be numbered n+4+M*q, each descending sub frame corresponding to same up process forms a time-domain resource group, and wherein, q is 0 and positive integer, and M is up process number.
Suppose that up process number is 8, up process 0 to 7 is transmitted respectively from sub-frame of uplink 0 to 7, in a manner described descending sub frame corresponding for 8 up processes is divided into 8 time-domain resource groups respectively.As, the descending sub frame of up process 0 correspondence, to be 4+8q, q be 0 and positive integer.
Corresponding 1 bit of each subframe in time-domain resource group, for representing level of interference in this subframe, as " having " and "None", if the grade of the interference that the descending sub frame that each time domain interference denoting signaling belongs to different time domain resource group is subject to, then the expense of this time domain interference signaling is 8 bits, if will represent that then overhead is 16 bits by the grade of the interference of generation in these 8 subframes simultaneously.
Example two
In this example, descending sub frame adopts synchronous HARQ process, and the descending sub frame corresponding by Down Procedure divides time-domain resource group.Down Procedure i transmits from descending sub frame n, and the descending sub frame that this Down Procedure is corresponding is numbered n+M*q, and each descending sub frame that same Down Procedure is corresponding forms a time-domain resource group, and wherein, q is 0 and positive integer, and M represents Down Procedure number.
Suppose that Down Procedure number is 8, Down Procedure 0 to 7 transmits respectively from descending sub frame 0 to 7, in a manner described descending sub frame corresponding for 8 Down Procedure is divided into 8 time-domain resource groups respectively, to be 8q, q be the descending sub frame as Down Procedure 0 correspondence 0 and positive integer.
The instruction of time domain interference and expense please refer to the example one of the present embodiment, no longer repeat.
It should be noted that, when will carry out disturbing the time-domain resource of instruction in units of time-domain resource group, time-domain resource group will be not limited to the mode divided by the subframe that process is corresponding.Such as, also can N number of radio frames be one-period, be H time-domain resource group by the some or all sub-frame division in N number of radio frames, a time-domain resource group can comprise one or more subframe, the disturbed condition of H time-domain resource group in each cycle can be indicated by one or more time domain interference indication signaling, wherein, N, H are positive integer.
Embodiment three
The present embodiment is different from embodiment one and two, and the time domain interference indication signaling of the present embodiment is included in existing configuration signal, utilizes in described configuration signal using the parameter of numeric representation as the indication parameter for determining time-domain resource disturbed condition.
The flow process of the present embodiment method as shown in Figure 4, comprising:
Step 210, base station receives the cell ID configuration signal comprising time domain interference indication information;
The cell ID configuration signal of the present embodiment does not need to change, the cell ID that just make use of wherein determines the interference will will produced in time-domain resource, the indication information that cell ID disturbs as a kind of time domain simultaneously, this indication information constitutes time domain interference indication signaling.
In other embodiments, time domain interference indication signaling can also be included in other existing configuration signals as core net configuration signal, can by parameters such as the Location Area Code (LAC) in core net configuration signal or service area identification codes (SAC), as the indication information determining time-domain resource disturbed condition.It should be noted that, described parameter should with numeric representation, and can unique identification community.
Step 220, the quantity of the time-domain resource of indication information and setting is disturbed in base station according to time domain, by calculating the disturbed condition determined in described time-domain resource;
The unit of the present embodiment time-domain resource is time-domain resource group, and the subframe corresponding by process divides, and as adopted the 3 kinds of dividing mode described in embodiment two, the quantity of the time-domain resource of setting equals the quantity of time-domain resource group.Assuming that the value of cell ID is g, the quantity of time-domain resource group is H, is numbered 0 ~ H-1, then has: base station is by calculating the numbering X=gmodH of time-domain resource group that will be subject to compared with minor interference determined.
The relative size of the situation of the interference of generation with interference represents, as represented by above-mentioned level of interference by each time-domain resource.
In other embodiments, other dividing mode also can be adopted to obtain time-domain resource group, or, also can adopt other time domain resource unit, as subframe.
Step 230, the disturbed condition of generation is carried out scheduling of resource according to what determine by base station in each time-domain resource.
Similarly, base station can by the terminal priority scheduling being positioned at cell edge region in the less subframe of the interference that will produce, by the terminal priority scheduling that is positioned at cell inner area in the larger subframe of the interference that will produce.
Correspondingly, present embodiments provide a kind of base station that time-domain resource is disturbed of determining, comprising:
Receiving system, for the configuration signal of receiving package containing time domain interference indication information;
Determining device, for the quantity H according to the time domain interference value g of indication information and the time-domain resource of setting, is defined as the time-domain resource that will be subject to compared with minor interference by the time-domain resource of numbering X=gmodH.
Further,
Described determining device is the value g according to cell ID, and the maximum up process of community and/or the quantity H of Down Procedure determine the numbering of the time-domain resource group be subject to compared with minor interference, each time-domain resource group comprises one or more subframe, can divide by above-mentioned 3 kinds of modes.
Below the example based on embodiment three is described.
Example one
In this example, time-domain resource group divides by the subframe that process is corresponding, is divided into H time-domain resource group altogether, numbers by 0 ~ H-1.Dividing mode is the one in following several mode:
The first, descending employing synchronous HARQ, using descending sub frame corresponding for each Down Procedure as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum downstream process number of community;
The second, using descending sub frame corresponding for each up process as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum up process number of community;
The third, using sub-frame of uplink corresponding for each up process as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum up process number of community.
Assuming that be g as the value of the cell ID of indication information, then the numbering X=gmodH of time-domain resource group that will be subject to compared with minor interference determined.
Such as, up number of processes is 8, up process 0 to 7 is transmitted respectively from sub-frame of uplink 0 to 7, corresponding descending sub frame divides 8 time-domain resource groups, the value of cell ID is g, then, base station is given tacit consent to the numbering X=gmod8 of the time-domain resource group be subject to compared with minor interference, also the interference be subject on the descending sub frame that up process X is corresponding is namely given tacit consent to less, can will be positioned at the terminal priority scheduling of cell edge region in these subframes, will the terminal priority scheduling of cell inner area be positioned in the subframe not belonging to time-domain resource group X.
The cell ID of adjacent base station configures according to mutual position relationship, adjacent base station according to above formula calculate by generally different for the numbering be subject to compared with the time-domain resource group of minor interference, by by cell edge region terminal priority scheduling to time-domain resource group stagger, mutual interference can be reduced.
Time-domain resource group is by sub-frame of uplink corresponding to up process, or the situation that Down Procedure corresponding to Down Procedure divides is similar, no longer repeats.
Embodiment four
Identical with embodiment three, the time domain interference indication signaling of the present embodiment is included in existing configuration signal as in cell ID configuration signal, core net configuration, to utilize in described configuration signal using numeric representation and can the parameter of unique identification community as the indication information for determining time domain side-play amount, the present embodiment is cell ID.
Assuming that the time domain maximum offset of base station configuration is R, in units of subframe, cell ID corresponding to base station is R, then have:
The time domain side-play amount of base station is Offset=gmodR.
Wherein, R can when the network planning manual configuration, also can be obtained by configuration signal.Can be a fixed value, or be the maximum process number of community, or be number of sub frames etc. of time domain interference indication signaling instruction.The side-play amount that adjacent base station calculates according to above formula is generally different, thus can reduce mutual interference.
It should be noted that, the time domain offset method of embodiment four can adopt separately, also can disturb to indicate and corresponding dispatching method adopts simultaneously to the time domain of embodiment one, embodiment two and embodiment three.
Embodiment five
The present embodiment adopts point two-layer resource coordination method carried out, and ground floor is the resource coordination between different classes of base station, and the second layer is the resource coordination between other base station of same class.
Resource coordination between different classes of base station adopts the method for grouping, it is N number of different resource group by resource division, N equals the classification number of the base station of carrying out resource coordination, the base station of each classification corresponds to a resource group, and resource corresponding to this resource group is the minimum resource group of probability that is interfered in all resources in base station.Such as, can be 3 different resource groups by resource division, correspond respectively to macro base station, micro-base station and Home eNodeB.
Further, the resource group that same classification base station (as one or more in macro base station, micro-base station and Home eNodeB) are corresponding can be divided into groups again, the resource difference that different group is corresponding.
Base station is dispatched as required according to the resource of the group correspondence at its place.As indication signaling and/or frequency domain interference indication signaling disturbed to carry out resource coordination according to time domain.Described frequency domain interference indication signaling can be the interference instruction in units of component carrier frequency, also can be for the interference of unit indicates with subband (m continuous resource block); Described time domain interference instruction can represent the disturbed condition of subframe or time-domain resource group, as shown in above-described embodiment one to three.
Embodiment six
The present embodiment adopts the resource coordination method of individual layer, divides into groups to Home eNodeB, the corresponding different resource of different group.In the limited deployment scenario of Home eNodeB, can divide into groups according to floor in a such as building building, or, according to room number grouping, if office building, also can according to deployed position each building angle grouping etc.
Home eNodeB is dispatched as required according to the resource of the group correspondence at its place.As indication signaling and/or frequency domain interference indication signaling disturbed to carry out resource coordination according to time domain.Described frequency domain interference indication signaling can be the interference instruction in units of component carrier frequency, also can be for the interference of unit indicates with subband (m continuous resource block); Described time domain interference instruction can represent the disturbed condition of subframe or time-domain resource group, as shown in above-described embodiment one to three.
The resource coordination method of above-mentioned individual layer also may be used for micro-base station.
Embodiment seven
The scene that each embodiment above-mentioned carries out resource coordination according to time domain interference indication signaling can be one or more in following scene, and these scenes are also applicable to the scene of carrying out resource coordination according to frequency domain interference indication signaling:
Micro-base station sends described interference indication information to adjacent macro base station, is used to indicate the disturbed condition that the terminal of cell edge region is subject in described time-domain resource under this micro-base station; The described disturbed condition that macro base station sends according to micro-base station carries out dispatch coordination;
Home eNodeB sends described interference indication information to adjacent macro base station, is used to indicate the disturbed condition that terminal under this Home eNodeB is subject in described time-domain resource; The disturbed condition that macro base station sends according to Home eNodeB carries out dispatch coordination;
The peritropous Home eNodeB of macro base station and/or micro-base station send described interference indication information, be used to indicate the disturbed condition that this macro base station will produce in described time-domain resource, the disturbed condition that Home eNodeB and/or micro-base station send according to macro base station carries out dispatch coordination;
The peritropous Home eNodeB of macro base station and/or micro-base station send described interference indication information, be used to indicate this macro base station susceptibility to descending interference in described time-domain resource, Home eNodeB and/or micro-base station should be avoided dispatching UE in the time-domain resource of high interference or lowering transmitting power as far as possible.
Peritropous of micro-base station macro base station sends described interference indication information, is used to indicate this macro base station susceptibility to descending interference in described time-domain resource, and macro base station should be avoided dispatching UE in the time-domain resource of high interference or lowering transmitting power as far as possible.
Base station obtains disturbed condition in time-domain resource, as being:
Micro-base station and Home eNodeB can detect SRS and/or the RACH signal of the terminal of macro base station, judge the disturbed condition of macro base station terminal to oneself, carry out dispatch coordination.Also the disturbed condition detected, macro base station can be sent to, so that macro base station carries out dispatch coordination.
CSI-RS or CRS of adjacent base station can also be monitored in base station, obtains the disturbed condition be subject to, and carries out dispatch coordination, also the disturbed condition detected can be sent to adjacent base station.
In sum, by the above embodiment of the present invention, define a kind of time domain interference indicating means, coordinated scheduling is carried out according to time domain interference instruction in base station, thus the interference problem of the control channel interference solved between neighbor cell and data, ensure that throughput and the covering of system.
One of ordinary skill in the art will appreciate that, all or part of step in said method is carried out instruction related hardware by program and is completed, and described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can use one or more integrated circuit to realize, and correspondingly, each module/unit in above-described embodiment can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a time domain interference indicating means, comprising:
Base station carries out the interference disturbed in the time-domain resource of instruction as required, and determine the interference indication information of described time-domain resource, described time-domain resource take subframe as base unit;
Described interference indication information is sent to adjacent base station by interference indication signaling by base station;
The unit of described time-domain resource is time-domain resource group, and each time-domain resource group comprises one or more subframe, described time-domain resource group in the following manner in one divide:
The first, descending employing synchronous HARQ, using descending sub frame corresponding for each Down Procedure as a time-domain resource group, needs the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the Down Procedure number that system is cell configuration;
The second, using descending sub frame corresponding for each up process as a time-domain resource group, needs the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the up process number that system is cell configuration;
The third, using sub-frame of uplink corresponding for each up process as a time-domain resource group, need the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the up process number that system is cell configuration.
2. the method for claim 1, is characterized in that:
Interference in described time-domain resource comprises: the interference be subject in described time-domain resource, and/or the interference will produced in described time-domain resource.
3. method as claimed in claim 1 or 2, is characterized in that:
The unit of described time-domain resource is subframe, or the unit of described time-domain resource is the time-domain resource group of one or more subframe composition.
4. method as claimed in claim 1 or 2, is characterized in that:
The unit of described time-domain resource is subframe, with N number of radio frames for one-period, carries out interference instruction in each cycle to k subframe, wherein, and k=1 ~ k
max, k
maxfor all number of sub frames that N number of radio frames comprises, N is positive integer.
5. the method for claim 1, is characterized in that:
Described base station carries out the interference disturbed in the time-domain resource of instruction as required, when determining the interference indication information of described time-domain resource, is, according to interference strength, interference is divided into multiple grade, by level of interference as described interference indication information.
6. the method as described in claim 1 or 2 or 5, is characterized in that, it is one or more in following scene that described interference indication information is sent to adjacent base station by described base station:
Micro-base station sends described interference indication information to adjacent macro base station, is used to indicate the disturbed condition that the terminal of cell edge region is subject in described time-domain resource under this micro-base station;
Home eNodeB sends described interference indication information to adjacent macro base station, is used to indicate the disturbed condition that terminal under this Home eNodeB is subject in described time-domain resource;
The peritropous Home eNodeB of macro base station and/or micro-base station send described interference indication information, are used to indicate the disturbed condition that this macro base station will produce in described time-domain resource;
The peritropous Home eNodeB of macro base station and/or micro-base station send described interference indication information, are used to indicate this macro base station susceptibility to descending interference in described time-domain resource;
Peritropous of micro-base station macro base station sends described interference indication information, is used to indicate this macro base station susceptibility to descending interference in described time-domain resource;
The peritropous Home eNodeB of macro base station and/or micro-base station send described interference indication information, are used to indicate this macro base station susceptibility to descending interference in described time-domain resource;
The peritropous macro base station in micro-base station sends described interference indication information, is used to indicate this micro-base station in described time-domain resource to the susceptibility of descending interference.
7. a defining method for time-domain resource interference, the method comprises:
Base station receives the configuration signal comprising time domain interference indication information;
The quantity H of the value g of indication information and the time-domain resource of setting is disturbed according to time domain in described base station, the time-domain resource of numbering X=gmodH is defined as the time-domain resource that will be subject to compared with minor interference;
Wherein, the time-domain resource of described setting is in units of time-domain resource group, and each time-domain resource group comprises one or more subframe, described time-domain resource group in the following manner in one divide:
The first, descending employing synchronous HARQ, using descending sub frame corresponding for each Down Procedure as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum downstream process number of community;
The second, using descending sub frame corresponding for each up process as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum up process number of community;
The third, using sub-frame of uplink corresponding for each up process as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum up process number of community.
8. method as claimed in claim 7, is characterized in that:
Described configuration signal is cell ID configuration signal, and described time domain interference indication information is cell ID; Or
Described configuration signal is core net configuration signal, and described time domain interference indication information is with numeric representation and can the parameter of a unique identification community in core net configuration signal.
9. can carry out a base station for time domain interference instruction, it is characterized in that, comprising:
Interference determining device, for carrying out as required disturbing the interference that the time-domain resource of instruction is subject to, and/or the interference will produced in described time-domain resource, determine the interference indication information of described time-domain resource, described time-domain resource take subframe as base unit;
Dispensing device, for being sent to adjacent base station by interference indication signaling by described interference indication information;
Described interference determining device carry out in units of time-domain resource group interference instruction, each time-domain resource group comprises one or more subframe, described time-domain resource group in the following manner in one divide:
The first, descending employing synchronous HARQ, using descending sub frame corresponding for each Down Procedure as a time-domain resource group, needs the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the Down Procedure number that system is cell configuration;
The second, using descending sub frame corresponding for each up process as a time-domain resource group, needs the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the up process number that system is cell configuration;
The third, using sub-frame of uplink corresponding for each up process as a time-domain resource group, need the time-domain resource group number carrying out disturbing instruction to be H, H=1 ~ H
max, wherein, H
maxfor the up process number that system is cell configuration.
10. base station as claimed in claim 9, is characterized in that:
Described interference determining device for one-period, to k subframe carries out interference instruction in each cycle with N number of radio frames, wherein, and k=1 ~ k
max, k
maxfor all number of sub frames that N number of radio frames comprises, N is positive integer.
Can determine for 11. 1 kinds to it is characterized in that the base station that time-domain resource is disturbed, comprising:
Receiving system, for the configuration signal of receiving package containing time domain interference indication information;
Determining device, for the quantity H according to the time domain interference value g of indication information and the time-domain resource of setting, is defined as the time-domain resource that will be subject to compared with minor interference by the time-domain resource of numbering X=gmodH;
Wherein, described determining device is the value g according to cell ID, and the maximum up process of community and/or the quantity H of Down Procedure determine that, by the numbering of the time-domain resource group be subject to compared with minor interference, each time-domain resource group comprises one or more subframe, and the one in the following manner divides:
The first, descending employing synchronous HARQ, using descending sub frame corresponding for each Down Procedure as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum downstream process number of community;
The second, using descending sub frame corresponding for each up process as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum up process number of community;
The third, using sub-frame of uplink corresponding for each up process as a time-domain resource group, the time-domain resource group number of setting is H, H=1 ~ H
max, wherein, H
maxfor the maximum up process number of community.
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| CN201010257093.8A CN101917729B (en) | 2010-08-13 | 2010-08-13 | A kind of time domain interference indicating means, time-domain resource interference defining method and base station thereof |
| PCT/CN2010/080407 WO2012019413A1 (en) | 2010-08-13 | 2010-12-28 | Time domain interference indication method, time domain resources interference determination method and base station thereof |
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| US9426703B2 (en) | 2011-02-11 | 2016-08-23 | Qualcomm Incorporated | Cooperation and operation of macro node and remote radio head deployments in heterogeneous networks |
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