CN101945403B - A kind of method and apparatus determining the proprietary search volume of user - Google Patents

A kind of method and apparatus determining the proprietary search volume of user Download PDF

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Publication number
CN101945403B
CN101945403B CN201010251917.0A CN201010251917A CN101945403B CN 101945403 B CN101945403 B CN 101945403B CN 201010251917 A CN201010251917 A CN 201010251917A CN 101945403 B CN101945403 B CN 101945403B
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component carrier
search volume
user
value
carrier
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CN101945403A (en
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吴欣
戴博
左志松
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a kind of method and apparatus determining the proprietary search volume of user, the method comprises: under carrier aggregation scene, when enable across carrier dispatching, determine the position of the proprietary search volume of the user of each component carrier under each polymerization grade, the relative same position equal increments of original position of the proprietary search volume of user of each component carrier.Adopt technical scheme of the present invention, Release be solved? across the Downlink Control Information test problems in the enable situation of carrier dispatching in 10 versions.

Description

A kind of method and apparatus determining the proprietary search volume of user
Technical field
The present invention relates to the communications field, particularly relate to a kind of method and apparatus determining the proprietary search volume of user.
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.
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.; Wherein:
DCIformat0 is used to indicate the scheduling of Physical Uplink Shared Channel (PUSCH, PhysicalUplinkSharedChannel);
DCIformat1, DCIformat1A, DCIformat1B, DCIformat1C, DCIformat1D are used for the different mode of a PDSCH code word scheduling;
DCIformat2, DCIformat2A, DCIformat2B are used for the different mode of space division multiplexing;
DCIformat3, DCIformat3A are used for the different mode of the power control instruction of Physical Uplink Control Channel (PUCCH, PhysicalUplinkControlChannel) and PUSCH.
The physical resource of physical downlink control channel PDCCH transmission is with control channel element (CCE, ControlChannelElement) be unit, the size of a CCE is 9 resource element group (REG, ResourceElementGroup), i.e. 36 resource elements (ResourceElement), a PDCCH may take 1,2,4 or 8 CCE.For these the four kinds of PDCCH sizes taking 1,2,4,8 CCE, adopt tree-shaped polymerization (Aggregration), the PDCCH namely taking 1 CCE can from any CCE position; Take the PDCCH of 2 CCE from even number CCE position; The CCE position of the integral multiple of the PDCCH taking 4 CCE from 4; The CCE position of the integral multiple of the PDCCH taking 8 CCE from 8.
Each polymerization rank (Aggregrationlevel) defines a search volume (Searchspace), comprise the search volume of public (common) and the search volume of subscriber equipment (UE, UserEquipment) proprietary (UE-Specific).OFDM symbol number shared by the controlled area that the CCE number of whole search volume is indicated by PCFICH in each descending sub frame and the group number of PHICH are determined.UE carries out blind Detecting by the DCIformat of residing transmission mode to all possible PDCCH code checks in search volume.
In a kth subframe, the control domain of carrying PDCCH is 0 to N by suite number cCE, kthe N of-1 cCE, kindividual CCE is formed.UE should at each non-DRX (non-DiscontinuousReception, non-discontinuous reception) subframe detects the PDCCH of one group of candidate to obtain control information, detects to refer to and to decode to the PDCCH in group according to all DCIformat to be detected.The candidate PDCCH (PDCCHcandidate) detected is needed to define in the mode of search volume, to polymerization grade (aggregationlevel) L ∈ { 1,2,4,8}, search volume defined by one group of candidate PDCCH (PDCCHcandidate).Search volume cCE corresponding to middle candidate PDCCH (PDCCHcandidate) m is defined by following formula:
Wherein i=0 ..., L-1, m=0 ..., M (L)-1, M (L)for search volume in the number of candidate PDCCH (PDCCHcandidate) to be checked.
To public search space (commonsearchspace), Y k=0, L gets 4 and 8.
To the proprietary search volume of UE (UE-specificsearchspace), L gets 1, and 2,4,8.
Y k＝(A·Y k-1)modD，
Wherein Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, n sit is the timeslot number in a radio frames.N rNTIfor corresponding RNTI (RadioNetworkTemporaryIdentifer, Radio Network Temporary Identifier).
UE should detect each public search space that aggregationlevel is 4 and 8, and aggregationlevel is 1,2, each proprietary search volume of UE of 4,8, and public search space and the proprietary search volume of UE can be overlapping.The search volume of concrete detection number of times and correspondence is as shown in table 1:
Table 1: the corresponding relation detecting number of times and search volume
UE by high-level signaling semi-static (semi-statically) be set to based on following a kind of transmission mode (transmissionmode), receive PDSCH transfer of data according to the instruction of the PDCCH of the search volume of subscriber equipment proprietary (UE-Specific):
Pattern 1: single antenna port; Port 0 (Single-antennaport; Port0)
Pattern 2: transmit diversity (Transmitdiversity)
Mode 3: Open-Loop Spatial Multiplexing (Open-loopspatialmultiplexing)
Pattern 4: Closed-Loop Spatial Multiplexing (Closed-loopspatialmultiplexing)
Pattern 5: multi-user's multiple-input and multiple-output (Multi-userMIMO)
Pattern 6: closed loop Rank=1 precoding (Closed-loopRank=1precoding)
Mode 7: single antenna port; Port 5 (Single-antennaport; Port5)
If UE is set to Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI by high level, CellRadioNetworkTemporaryIdentifier) cyclic redundancy check (CRC) (CRC of scrambling, CyclicalRedundancyCheck) carry out PDCCH decoding, then UE should according in table 2 definition respective sets incompatible decoding PDCCH and all relevant PDSCH:
The transmission plan that during table 2:C-RNTI scrambling, descending transmission mode is corresponding
If UE is set to semi-persistent scheduling Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (SPSC-RNTI by high level, Semi-persistentlyScheduledCellRadioNetworkTemporaryIdent ifier) CRC of scrambling carries out PDCCH decoding, then and UE should according to the respective sets incompatible decoding PDCCH and all relevant PDSCH of definition in following table 3:
The transmission plan that during table 3:SPSC-RNTI scrambling, descending transmission mode is corresponding
If UE is set to transmitting power control ascending control channel Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (TPC-PUCCH-RNTI by high level, TransmitPowerControl-PUCCH-CellRadioNetworkTemporaryIden tifier) CRC of scrambling carries out PDCCH decoding, then and UE should according to the respective sets of the definition in following table 4 incompatible decoding PDCCH:
The search volume that during table 4:TPC-PUCCH-RNTI scrambling, DCIformat is corresponding
DCI format Search volume
DCI format 3/3A Publicly-owned search volume
If UE is set to transmitting power control Uplink Shared Channel Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (TPC-PUSCH-RNTI by high level, TransmitPowerControl-PUSCH-CellRadioNetworkTemporaryIden tifier) CRC of scrambling carries out PDCCH decoding, then and UE should according to the respective sets of the definition in following table 5 incompatible decoding PDCCH:
The search volume that during table 5:TPC-PUSCH-RNTI scrambling, DCIformat is corresponding
DCI format Search volume
DCI format 3/3A Publicly-owned search volume
Because LTE-Advanced network needs to access LTE user, so its operational frequency bands needs to cover current LTE frequency band, there is not the spectral bandwidth of assignable continuous 100MHz in this frequency range, so LTE-Advanced needs the direct technology solved to be that several distribution continuous component carrier frequency (frequency spectrum) (ComponentCarrier) is on different frequency bands adopted carrier aggregation (CarrierAggregation) technology aggregation, form the operable 100MHz bandwidth of LTE-Advanced.Namely 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.
Under 3GPP is set in the scene of carrier aggregation, the mode across carrier dispatching (CrossComponentCarrierScheduling) can be adopted, multiple component carrier is dispatched, namely can monitor the down control channel PDCCH of other component carriers on certain component carrier.So, just need to add carrier wave instructions field (CarrierIndicatorField, CIF) in descending control information format (DCIformat), determine that the PDCCH monitored is the PDCCH of which component carrier.
In across carrier dispatching, originally the user of R8 version proprietary search volume design has no longer adapted to the requirement of Release (R) 10 version of LTE-Advanced.At present, to the scheme that the proprietary search volume of the user how designed in R10 is not also determined, thus make troubles to practical application.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method and apparatus determining the proprietary search volume of user, can solve in Release10 version across the Downlink Control Information test problems in the enable situation of carrier dispatching.
Determine a method for the proprietary search volume of user, comprising:
Under carrier aggregation scene, when enable across carrier dispatching, determine the position of the proprietary search volume of the user of each component carrier under each polymerization grade, the relative same position equal increments of original position of the proprietary search volume of user of each component carrier.
Further, the proprietary search volume of user of described each component carrier is evenly distributed on whole search volume according to largest interval.
Further, the relative position between the original position of the proprietary search volume of user of the component carrier that index is adjacent is fixing, does not change with the number of control channel Elements C CE.
Further, the CCE in the proprietary search volume of user corresponding to candidate physical down control channel is defined as:
Wherein i=0 ..., L-1, m=0 ..., M (L)-1, L is the polymerization grade of Physical Downlink Control Channel, M (L)for the number of candidate physical down control channel to be checked in search volume under polymerization grade L condition, k is subframe numbering, N cCE, kfor the number of the CCE in subframe k, I is the carrier index of each component carrier;
Y k＝(A·Y k-1)modD，
Wherein Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, n sbe the timeslot number in a radio frames, n rNTIfor corresponding Radio Network Temporary Identifier;
Described same position is described Y kthe position of the CCE represented.
Further, the proprietary search volume of user of described each component carrier is evenly distributed on whole search volume according to largest interval and refers to:
Described f (I)=M (L)i+g (I);
Described
Or
Or
Wherein, represent and round downwards, || represent and take absolute value, the value of NumCC is any one in following several method:
A () configuration is to the quantity of the component carrier of user;
B () configuration is to the component carrier quantity of the activation of user;
The supported largest component number of carriers of (c) current system;
D () is a fixed value, this fixed value is the arbitrary integer value in 2 to 8, or is configured by high-level signaling.
Further, the proprietary search volume of user of described each component carrier is evenly distributed on whole search volume according to largest interval and refers to:
Described f (I) is:
or,
Wherein, represent and round downwards, the value of NumCC is any one in following several method:
A () configuration is to the quantity of the component carrier of user;
B () configuration is to the component carrier quantity of the activation of user;
The supported largest component number of carriers of (c) current system;
D () is a fixed value, described fixed value is the arbitrary integer value in 2 to 8, or is configured by high-level signaling.
Further, the relative position between the original position of the proprietary search volume of the user of the component carrier that described index is adjacent fixedly refers to:
Described f (I)=Wg (I);
Wherein, the value of W is: n is the multiple of L; Or W=M (L); Or W is taken as a fixing integer value;
Described g (I) is defined as:
The value of g (I)=HI, H is the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value;
Or the value of g (I)=(HI) modQ, H and Q is the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value.
Further, when described L gets different value, the value of described N is identical.
Further, the function e (Y in the proprietary search volume of described user k) there is the following two kinds expression way:
E (Y k)=Y k, or,
Further, the index of described component carrier in the following ways in any one be configured:
(1) be set to a designated value by implementing across the component carrier index of the component carrier of carrier dispatching, all the other by each component carrier across carrier dispatching according to respective frequency height and then described designated value arranged in order component carrier index;
(2) the component carrier index implemented across the component carrier of carrier dispatching is set to a designated value, the sequence of all component carriers according to respective frequency is arranged, and put in order from the component carrier implemented across carrier dispatching according to this, the and then component carrier index of above-mentioned other component carrier of designated value cycle assignment;
(3) by enforcement across carrier dispatching and by each component carrier across carrier dispatching according to respective frequency position, configure component carrier index continuously with sequence;
(4) component carrier index equals the value of the carrier wave instructions field of component carrier;
(5) configure to the component carrier sum of the carrier wave instructions field of each component carrier of subscriber equipment and activation according to base station to configure component carrier index, to the component carrier activated, continuous dispensing component carrier index is carried out according to the order of carrier wave instruction thresholding from 0, described order is from small to large, or from big to small;
(6) component carrier index is configured by high-level signaling.
The present invention also provides a kind of device determining the proprietary search volume of user, comprises and arranges module;
Described module is set, under carrier aggregation scene, when enable across carrier dispatching, determines the position of the proprietary search volume of the user of each component carrier under each polymerization grade; The relative same position equal increments of original position of the proprietary search volume of user of each component carrier.
Further, the described proprietary search volume of user arranging each component carrier of module installation is evenly distributed on whole search volume according to largest interval.
Further, the relative position between the original position of the proprietary search volume of user of the component carrier that the described index arranging module installation is adjacent is fixing, does not change with the number of control channel Elements C CE.
Further, the described module that arranges arranges CCE in the proprietary search volume of user corresponding to candidate physical down control channel in the following manner:
Wherein i=0 ..., L-1, m=0 ..., M (L)-1, L is the polymerization grade of Physical Downlink Control Channel, M (L)for the number of candidate physical down control channel to be checked in search volume under polymerization grade L condition, k is subframe numbering, N cCE, kfor the number of the CCE in subframe k, I is the carrier index of each component carrier;
Y k＝(A·Y k-1)modD，
Wherein Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, n sbe the timeslot number in a radio frames, n rNTIfor corresponding Radio Network Temporary Identifier;
Described same position is described Y kthe position of the CCE represented.
Further, the described proprietary search volume of user arranging each component carrier of module installation is evenly distributed on whole search volume according to largest interval and refers to:
Described f (I)=M (L)i+g (I);
Described
Or
Or
Wherein, represent and round downwards, || represent and take absolute value, the value of NumCC is any one in following several method:
A () configuration is to the quantity of the component carrier of user;
B () configuration is to the component carrier quantity of the activation of user;
The supported largest component number of carriers of (c) current system;
D () is a fixed value, this fixed value is the arbitrary integer value in 2 to 8, or is configured by high-level signaling.
Further, the described proprietary search volume of user arranging each component carrier of module installation is evenly distributed on whole search volume according to largest interval and refers to:
Described f (I) is:
or,
Wherein, represent and round downwards, the value of NumCC is any one in following several method:
A () configuration is to the quantity of the component carrier of user;
B () configuration is to the component carrier quantity of the activation of user;
The supported largest component number of carriers of (c) current system;
D () is a fixed value, described fixed value is the arbitrary integer value in 2 to 8, or is configured by high-level signaling.
Further, the relative position between the original position of the proprietary search volume of user of the component carrier that the described index arranging module installation is adjacent fixedly refers to:
Described f (I)=Wg (I);
Wherein, the value of W is: n is the multiple of L; Or W=M (L); Or W is taken as a fixing integer value;
Described g (I) is defined as:
The value of g (I)=HI, H is the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value;
Or the value of g (I)=(HI) modQ, H and Q is the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value.
Further, when described L gets different value, the value of described N is identical.
Further, the function e (Y in the proprietary search volume of described user k) there is the following two kinds expression way:
E (Y k)=Y k, or,
In sum, the invention provides a kind of method and apparatus determining the proprietary search volume of user, by under definition R10 version carrier aggregation scene, the proprietary search volume of monitoring PDCCH user of each component carrier time enable across carrier dispatching, solves the blocking rate problem between user under this scene.
Accompanying drawing explanation
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 original position schematic diagram of each polymerization grade of the proprietary search volume of a kind of user under carrier aggregation;
Fig. 4 is a kind of new user proprietary search volume schematic diagram under carrier aggregation;
Fig. 5 is a kind of new user proprietary search volume schematic diagram under carrier aggregation;
Fig. 6 is the original position schematic diagram of each polymerization grade of the proprietary search volume of a kind of user under carrier aggregation.
Embodiment
The detection method of Downlink Control Information provided by the invention and device, for managing the monitoring of PDCCH in carrier aggregation system.
device embodiment
The present embodiment provides a kind of device determining the proprietary search volume of user, comprises and arranges module;
Module is set, under carrier aggregation scene, when enable across carrier dispatching, determines the position of the proprietary search volume of the user of each component carrier under each polymerization grade; The relative same position equal increments of original position of the proprietary search volume of user of each component carrier.
The proprietary search volume of user arranging each component carrier of module installation is evenly distributed on whole search volume according to largest interval.
Relative position between the original position arranging the proprietary search volume of user of the adjacent component carrier of the index of module installation is fixing, does not change with the number of CCE.
Module is set CCE in the proprietary search volume of user corresponding to candidate physical down control channel is set in the following manner:
Wherein i=0 ..., L-1, m=0 ..., M (L)-1, L is the polymerization grade of Physical Downlink Control Channel, M (L)for the number of candidate physical down control channel to be checked in search volume under polymerization grade L condition, k is subframe numbering, N cCE, kfor the number of the CCE in subframe k, I is the carrier index of each component carrier;
Y k＝(A·Y k-1)modD，
Wherein Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, n sbe the timeslot number in a radio frames, n rNTIfor corresponding Radio Network Temporary Identifier;
Described same position is described Y kthe position of the CCE represented.
The proprietary search volume of user arranging each component carrier of module installation is evenly distributed on whole search volume according to largest interval and refers to:
f(I)＝M (L)·I+g(I)；
Or
Or
The proprietary search volume of user arranging each component carrier of module installation is evenly distributed on whole search volume according to largest interval and refers to:
Described f (I) is:
or,
Wherein, represent and round downwards, || represent and take absolute value, the value of NumCC is any one in following several method:
A () configuration is to the quantity of the component carrier of user;
B () configuration is to the component carrier quantity of the activation of user;
The supported largest component number of carriers of (c) current system;
D () is a fixed value, this fixed value is the arbitrary integer value in 2 to 8, or is configured by high-level signaling.
Relative position between the original position arranging the proprietary search volume of user of the adjacent component carrier of the index of module installation fixedly refers to:
f(I)＝W·g(I)；
Wherein, the value of W is: n is the multiple of L; When L gets different value, the value of N can be identical, also can be different, and preferably, when L gets different value, the value of N is identical, as L=1,2,4 or 8 time, N all gets 16;
Or W=M (L); Or W is taken as a fixing integer value;
G (I) is defined as:
The value of g (I)=HI, H is the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value;
Or the value of g (I)=(HI) modQ, H and Q is the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value.
Function e (Y in the proprietary search volume of user k) there is the following two kinds expression way:
E (Y k)=Y k, or,
embodiment of the method
The present embodiment provides a kind of method determining the proprietary search volume of user, under carrier aggregation scene, when enable across carrier dispatching, determine the position of the proprietary search volume of the user of each component carrier under each polymerization grade, the relative same position equal increments of original position of the proprietary search volume of user of each component carrier.
Embodiment one:
Under the carrier aggregation scene of LTE-Advanced, when enable across carrier dispatching, the original position of the proprietary search volume of user under each polymerization grade of PDCCH monitoring, can determine according to the Radio Network Temporary Identifier of subscriber equipment and polymerization grade.As shown in schematic diagram 3, concrete configuration is as follows:
In a kth subframe, the control domain of carrying PDCCH is 0 to N by suite number cCE, kthe N of-1 cCE, kindividual CCE is formed.To polymerization grade (aggregationlevel) L ∈ { the proprietary search volume of 1,2,4,8}, UE defined by one group of candidate PDCCH (PDCCHcandidate).The proprietary search volume of UE in the original position of CCE corresponding to first candidate PDCCH (PDCCHcandidate) defined by following formula:
Wherein, Y k=(AY k-1) modD, Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, n sit is the timeslot number in a radio frames.N rNTIfor corresponding RNTI (RadioNetworkTemporaryIdentifier, Radio Network Temporary Identifier).
Under the carrier aggregation scene of LTE-Advanced, when enable across carrier dispatching, high level will notify that certain component carrier of physical layer needs which is dispatched other component carrier, namely can obtain the index of component carrier, the parameter of this index can be set here as I, its span is { 0,1,2,3,4} or { 0,1,2,3,4,5,6,7}.The definition of the proprietary search volume of user of PDCCH monitoring, can have following several configuration:
Configuration one:
The proprietary search volume of user of each component carrier is evenly distributed on whole search volume according to largest interval.The proprietary search volume of UE under a certain polymerization grade is as shown in schematic diagram 4.
The proprietary search volume of UE cCE corresponding to middle candidate PDCCH (PDCCHcandidate) m is defined by following formula:
Wherein, e (Y k)=Y k, i=0 ..., L-1, m=0 ..., M (L)-1, M (L)for search volume in the number of candidate PDCCH to be checked, N cCE, kfor the number of the CCE of a kth subframe carrying PDCCH control domain, f (I) is by the function of component carrier index I as input.And the definition of f (I) can have following method:
f(I)＝M (L)·I+g(I)
Wherein g (I) can have following method for expressing:
Or
Or
Or f (I) can also have following define method:
Or
Here, NumCC can be that configuration is to the quantity of the component carrier of user, also can be that configuration is to (active) component carrier quantity of the activation of user, also can be the largest component number of carriers of current system, also can be a fixed value, this fixed value can be the arbitrary integer value in 2 to 8, or is configured by high-level signaling. represent and round downwards, || represent and take absolute value.
To the proprietary search volume of UE (UE-specificsearchspace), L gets 1, and 2,4,8.
Y k＝(A·Y k-1)modD，
Wherein Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, n sit is the timeslot number in a radio frames.N rNTIfor corresponding RNTI (RadioNetworkTemporaryIdentifier, Radio Network Temporary Identifier).
Configuration two:
The proprietary search volume of user of each component carrier is according to component carrier index, or the component carrier index after interweaving is determined, and the relative position between the original position of the proprietary search volume of user of the adjacent component carrier of index is fixing, does not change with the number of CCE.The proprietary search volume of UE under a certain polymerization grade is as shown in schematic diagram 5.
The proprietary search volume of UE cCE corresponding to middle candidate PDCCH (PDCCHcandidate) m is defined by following formula:
Wherein, e (Y k)=Y k, i=0 ..., L-1, m=0 ..., M (L)-1, M (L)for search volume in the number of candidate PDCCH to be checked, N cCE, kfor the number of the CCE of a kth subframe carrying PDCCH control domain, f (I) is by the function of component carrier index I as input.And the definition of f (I) can have following method:
f(I)＝W·g(I)
Wherein, the value of W is:
n is the multiple of L, and when L gets different value, the value of N can be identical, also can be different, and preferably, when L gets different value, the value of N is identical, as L=1,2,4 or 8 time, N all gets 16;
Or W=M (L);
Or W is taken as a fixing integer value, and such as W is taken as 16.
And g (I) can be expressed as:
The value of g (I)=HI, H can be the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value, such as H gets 3;
Or the value of g (I)=(HI) modQ, H and Q is the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value, preferably, the value of Q is 8.
To the proprietary search volume of UE (UE-specificsearchspace), L gets 1, and 2,4,8.
Y k＝(A·Y k-1)modD，
Wherein Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, ns is the timeslot number in a radio frames.N rNTIfor corresponding RNTI (RadioNetworkTemporaryIdentifier, Radio Network Temporary Identifier).
Embodiment two:
Under the carrier aggregation scene of LTE-Advanced, when enable across carrier dispatching, the original position of the proprietary search volume of user under each polymerization grade of PDCCH monitoring, can determine according to the Radio Network Temporary Identifier of subscriber equipment, and has nothing to do with polymerization grade.As shown in schematic diagram 6, concrete configuration is as follows:
In a kth subframe, the control domain of carrying PDCCH is 0 to N by suite number cCE, kthe N of-1 cCE, kindividual CCE is formed.To polymerization grade (aggregationlevel) L ∈ { the proprietary search volume of 1,2,4,8}, UE defined by one group of candidate PDCCH (PDCCHcandidate).The proprietary search volume of UE in the original position of CCE corresponding to first candidate PDCCH (PDCCHcandidate) defined by following formula:
Wherein, y k=(AY k-1) modD, Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, n sit is the timeslot number in a radio frames.N rNTIfor corresponding RNTI (RadioNetworkTemporaryIdentifier, Radio Network Temporary Identifier).
Under the carrier aggregation scene of LTE-Advanced, when enable across carrier dispatching, high level will notify that certain component carrier of physical layer needs which is dispatched other component carrier, namely can obtain the index of component carrier, the parameter of this index can be set here as I, its span is { 0,1,2,3,4} or { 0,1,2,3,4,5,6,7}.The definition of the proprietary search volume of user of PDCCH monitoring, can have following several configuration:
Configuration one:
The proprietary search volume of user of each component carrier is evenly distributed on whole search volume according to largest interval.The proprietary search volume of UE under a certain polymerization grade is as shown in schematic diagram 4.
The proprietary search volume of UE cCE corresponding to middle candidate PDCCH (PDCCHcandidate) m is defined by following formula:
Wherein, m (L) is search volume in the number of candidate PDCCH to be checked, N cCE, kfor the number of the CCE of a kth subframe carrying PDCCH control domain, f (I) is by the function of component carrier index I as input.And the definition of f (I) can have following method:
f(I)＝M (L)·I+g(I)
Wherein g (I) can have following method for expressing:
Or
Or
Or f (I) can also have following define method:
Or
Here, NumCC can be that configuration is to the quantity of the component carrier of user, also can be that configuration is to (active) component carrier quantity of the activation of user, also can the largest component number of carriers of current system, also can be a fixed value, this fixed value can be the arbitrary integer value in 2 to 8, or is configured by high-level signaling. represent and round downwards, || represent and take absolute value.
To the proprietary search volume of UE (UE-specificsearchspace), L gets 1, and 2,4,8.
Y k＝(A·Y k-1)modD，
Wherein Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, n sit is the timeslot number in a radio frames.N rNTIfor corresponding RNTI (RadioNetworkTemporaryIdentifier, Radio Network Temporary Identifier).
Configuration two:
The proprietary search volume of user of each component carrier is according to component carrier index, or the component carrier index after interweaving is determined, and the relative position between the original position of the proprietary search volume of user of the adjacent component carrier of index is fixing, does not change with the number of CCE.The proprietary search volume of UE under a certain polymerization grade is as shown in schematic diagram 5.
The proprietary search volume of UE cCE corresponding to middle candidate PDCCH (PDCCHcandidate) m is defined by following formula:
Wherein, m (L) is search volume in the number of candidate PDCCH to be checked, N cCE, kfor the number of the CCE of a kth subframe carrying PDCCH control domain, f (I) is by the function of component carrier index I as input.And the definition of f (I) can have following method:
f(I)＝W·g(I)
Wherein, the value of W is:
n is the multiple of L, and such as N gets 16;
Or W=M (L);
Or W is taken as a fixing integer value, and such as W is taken as 16.
And g (I) can be expressed as:
The value of g (I)=HI, H can be the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value, such as H gets 3;
Or the value of g (I)=(HI) modQ, H and Q is the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value, preferably, the value of Q is 8.
To the proprietary search volume of UE (UE-specificsearchspace), L gets 1, and 2,4,8.
Y k＝(A·Y k-1)modD，
Wherein Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, n sit is the timeslot number in a radio frames.N rNTIfor corresponding RNTI (RadioNetworkTemporaryIdentifier, Radio Network Temporary Identifier).
Embodiment three:
The collocation method of the component carrier index I in above-described embodiment, Ke Yiyou:
(1) the component carrier index implemented across the component carrier of carrier dispatching can be set to a designated value, described designated value can be, but not limited to be 0, can be expressed as 000 during binary representation; All the other are by each component carrier across carrier dispatching according to respective frequency height, and by the order arrangement of (or from small to large) from big to small, its index value is described designated value arranged in order and then, and the span of index is 1 to 4 or 1 to 7.
Such as: it is designated value 0 that setting is implemented across the index that the component carrier of carrier dispatching is corresponding, have 4 component carriers and be respectively component carrier 1, component carrier 2, component carrier 3 and component carrier 4, wherein implement across carrier dispatching for component carrier 2, the index then distributed for component carrier 2 is 0, for component carrier 1, component carrier 3 and component carrier 4 can be followed successively by 1,2,3, also 3,2,1 can be followed successively by.
(2) the component carrier index implemented across the component carrier of carrier dispatching is set to a designated value, described designated value can be, but not limited to be 0, can be expressed as 000 during binary representation; The sequence of all component carriers according to respective frequency is arranged, and put in order from the component carrier implemented across carrier dispatching according to this, and then the component carrier index of above-mentioned other component carrier of designated value cycle assignment, span is from 1 to 4 or 1 to 7.
Such as: it is designated value 0 that setting is implemented across the index that the component carrier of carrier dispatching is corresponding, have 4 component carriers and be respectively component carrier 1, component carrier 2, component carrier 3 and component carrier 4, wherein implement across carrier dispatching for component carrier 2, the index then distributed for component carrier 2 is 0, for component carrier 1, component carrier 3 and component carrier 4 can be followed successively by 2,3,1, also 2,1,3 can be followed successively by.
(3) by enforcement across carrier dispatching and by each component carrier across carrier dispatching according to respective frequency position, component carrier index is configured continuously with sequence, can be by order from big to small also can be by from small to large order arrangement, the span of index is from 0 to 4 or 0 to 7.
Such as: establish and have 4 component carriers, component carrier 1, component carrier 2, component carrier 3 and component carrier 4 is respectively by the arrangement of frequency height, wherein implement across carrier dispatching for component carrier 2, the index then distributed for these 4 component carriers is respectively 0,1,2,3, or is that the index that these 4 component carriers distribute is respectively 3,2,1,0.
(4) configure to the carrier wave instructions field of each component carrier of subscriber equipment to configure component carrier index according to base station, preferably, component carrier index equals the value of the carrier wave instructions field of component carrier.
Such as: CIF-value is 010, then component carrier index I is 2.
(5) configure to the component carrier sum of the carrier wave instructions field of each component carrier of subscriber equipment and activation according to base station to configure component carrier index, preferably, according to each component carrier of large minispread of the value of carrier wave instructions field, to the component carrier activated, continuous dispensing component carrier index is carried out according to the order of carrier wave instruction thresholding from 0, this order can be from small to large, also can be from big to small.
Such as: the component carrier number of activation is 2, and the value of its carrier wave instructions field is respectively 0 and 3, and so its component carrier index just can be respectively 0 and 1, or is 1 and 0.
(6) component carrier index is configured by high-level signaling.
In sum, the invention solves under the carrier aggregation scene of LTE-Advanced, when enable across carrier dispatching time, how to define the problem that UE monitors the search volume of PDCCH.
The all or part of step that one of ordinary skill in the art will appreciate that 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.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 above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range described in claim.

Claims (7)

1. determine a method for the proprietary search volume of user, comprising:
Under carrier aggregation scene, when enable across carrier dispatching, determine the position of the proprietary search volume of the user of each component carrier under each polymerization grade, the relative same position equal increments of original position of the proprietary search volume of user of each component carrier;
Wherein, the proprietary search volume of user of described each component carrier is evenly distributed on whole search volume according to largest interval; Or,
Relative position between the original position of the proprietary search volume of user of the component carrier that index is adjacent is fixing, does not change with the number of control channel Elements C CE;
Wherein, the proprietary search volume of user of described each component carrier is evenly distributed on whole search volume according to largest interval and refers to:
CCE in the proprietary search volume of user corresponding to candidate physical down control channel is defined as:
Wherein i=0 ..., L-1, m=0 ..., M (L)-1, L is the polymerization grade of Physical Downlink Control Channel, M (L)for the number of candidate physical down control channel to be checked in search volume under polymerization grade L condition, k is subframe numbering, N cCE, kfor the number of the CCE in subframe k, I is the carrier index of each component carrier, e (Y k) be the function in the proprietary search volume of user;
Y k＝(A·Y k-1)modD，
Wherein Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, n sbe the timeslot number in a radio frames, n rNTIfor corresponding Radio Network Temporary Identifier;
Described same position is described Y kthe position of the CCE represented;
Described f (I)=M (L)i+g (I);
Described
Or
Or
Or described f (I) is:
or,
Wherein, represent and round downwards, || represent and take absolute value, the value of NumCC is any one in following several method:
A () configuration is to the quantity of the component carrier of user;
B () configuration is to the component carrier quantity of the activation of user;
The supported largest component number of carriers of (c) current system;
D () is a fixed value, this fixed value is the arbitrary integer value in 2 to 8, or is configured by high-level signaling;
Relative position between the original position of the proprietary search volume of user of the component carrier that described index is adjacent fixedly refers to:
CCE in the proprietary search volume of user corresponding to candidate physical down control channel is defined as:
Wherein i=0 ..., L-1, m=0 ..., M (L)-1, L is the polymerization grade of Physical Downlink Control Channel, M (L)for the number of candidate physical down control channel to be checked in search volume under polymerization grade L condition, k is subframe numbering, N cCE, kfor the number of the CCE in subframe k, I is the carrier index of each component carrier, e (Y k) be the function in the proprietary search volume of user;
Y k＝(A·Y k-1)modD，
Wherein Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, n sbe the timeslot number in a radio frames, n rNTIfor corresponding Radio Network Temporary Identifier;
Described same position is described Y kthe position of the CCE represented;
Described f (I)=Wg (I);
Wherein, the value of W is: n is the multiple of L; Or W=M (L); Or W is taken as a fixing integer value;
Described g (I) is defined as:
The value of g (I)=HI, H is the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value;
Or the value of g (I)=(HI) modQ, H and Q is the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value.
2. the method for claim 1, is characterized in that:
When described L gets different value, the value of described N is identical.
3. the method for claim 1, is characterized in that:
Function e (Y in the proprietary search volume of described user k) there is the following two kinds expression way:
E (Y k)=Y k, or,
4. the method for claim 1, is characterized in that:
The index of described component carrier in the following ways in any one be configured:
(1) be set to a designated value by implementing across the component carrier index of the component carrier of carrier dispatching, all the other by each component carrier across carrier dispatching according to respective frequency height and then described designated value arranged in order component carrier index;
(2) the component carrier index implemented across the component carrier of carrier dispatching is set to a designated value, the sequence of all component carriers according to respective frequency is arranged, and put in order from the component carrier implemented across carrier dispatching according to this, the and then component carrier index of above-mentioned other component carrier of designated value cycle assignment;
(3) by enforcement across carrier dispatching and by each component carrier across carrier dispatching according to respective frequency position, configure component carrier index continuously with sequence;
(4) component carrier index equals the value of the carrier wave instructions field of component carrier;
(5) configure to the component carrier sum of the carrier wave instructions field of each component carrier of subscriber equipment and activation according to base station to configure component carrier index, to the component carrier activated, continuous dispensing component carrier index is carried out according to the order of carrier wave instruction thresholding from 0, described order is from small to large, or from big to small;
(6) component carrier index is configured by high-level signaling.
5. determine a device for the proprietary search volume of user, comprise and module is set; It is characterized in that:
Described module is set, under carrier aggregation scene, when enable across carrier dispatching, determines the position of the proprietary search volume of the user of each component carrier under each polymerization grade; The relative same position equal increments of original position of the proprietary search volume of user of each component carrier;
Wherein, the described proprietary search volume of user arranging each component carrier of module installation is evenly distributed on whole search volume according to largest interval; Or,
Relative position between the original position of the proprietary search volume of user of the component carrier that the described index arranging module installation is adjacent is fixing, does not change with the number of control channel Elements C CE;
Wherein, the described proprietary search volume of user arranging each component carrier of module installation is evenly distributed on whole search volume according to largest interval and refers to:
The described module that arranges arranges CCE in the proprietary search volume of user corresponding to candidate physical down control channel in the following manner:
Wherein i=0 ..., L-1, m=0 ..., M (L)-1, L is the polymerization grade of Physical Downlink Control Channel, M (L)for the number of candidate physical down control channel to be checked in search volume under polymerization grade L condition, k is subframe numbering, N cCE, kfor the number of the CCE in subframe k, I is the carrier index of each component carrier, e (Y k) be the function in the proprietary search volume of user;
Y k＝(A·Y k-1)modD，
Wherein Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, n sbe the timeslot number in a radio frames, n rNTIfor corresponding Radio Network Temporary Identifier;
Described same position is described Y kthe position of the CCE represented;
Described f (I)=M (L)i+g (I);
Described
Or
Or
Or described f (I) is:
or,
Wherein, represent and round downwards, || represent and take absolute value, the value of NumCC is any one in following several method:
A () configuration is to the quantity of the component carrier of user;
B () configuration is to the component carrier quantity of the activation of user;
The supported largest component number of carriers of (c) current system;
D () is a fixed value, this fixed value is the arbitrary integer value in 2 to 8, or is configured by high-level signaling;
Relative position between the original position of the proprietary search volume of user of the component carrier that the described index arranging module installation is adjacent fixedly refers to:
The described module that arranges arranges CCE in the proprietary search volume of user corresponding to candidate physical down control channel in the following manner:
Wherein i=0 ..., L-1, m=0 ..., M (L)-1, L is the polymerization grade of Physical Downlink Control Channel, M (L)for the number of candidate physical down control channel to be checked in search volume under polymerization grade L condition, k is subframe numbering, N cCE, kfor the number of the CCE in subframe k, I is the carrier index of each component carrier, e (Y k) be the function in the proprietary search volume of user;
Y k＝(A·Y k-1)modD，
Wherein Y -1=n rNTI≠ 0, A=39827, D=65537, represent and round downwards, n sbe the timeslot number in a radio frames, n rNTIfor corresponding Radio Network Temporary Identifier;
Described same position is described Y kthe position of the CCE represented;
Described f (I)=Wg (I);
Wherein, the value of W is: n is the multiple of L; Or W=M (L); Or W is taken as a fixing integer value;
Described g (I) is defined as:
The value of g (I)=HI, H is the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value;
Or the value of g (I)=(HI) modQ, H and Q is the arbitrary integer value in 1 to 8, or 1 arrives in arbitrary integer value.
6. device as claimed in claim 5, is characterized in that:
When described L gets different value, the value of described N is identical.
7. device as claimed in claim 5, is characterized in that:
Function e (Y in the proprietary search volume of described user k) there is the following two kinds expression way:
E (Y k)=Y k, or,
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