CN101478808A - Downlink control information sending and detecting method - Google Patents
Downlink control information sending and detecting method Download PDFInfo
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- CN101478808A CN101478808A CNA2009100019435A CN200910001943A CN101478808A CN 101478808 A CN101478808 A CN 101478808A CN A2009100019435 A CNA2009100019435 A CN A2009100019435A CN 200910001943 A CN200910001943 A CN 200910001943A CN 101478808 A CN101478808 A CN 101478808A
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Abstract
The invention provides a method for sending downlink control information. A base station carries the downlink control information in the physical downlink control channel, sends the channel by component carrier and indicates the component carrier by high-level signal. The information is the first and/or the second category downlink control information. The first category information includes public downlink control information and terminal proprietary downlink control information; the second category information carries the indicating information related to the terminal propriety downlink control information. The invention also provides the detection method of the downlink control information. The terminal is used for receiving the high-level signal, indicating the component carrier according to the high-level signal, detecting the physical channel on the carrier and obtaining the downlink control information.
Description
Technical field
The present invention relates to field of mobile wireless communication, particularly relate to the transmission and the detection method of Downlink Control Information in the wireless communication system.
Background technology
Fig. 1 shows the frame structure of LTE (Long Term Evolution, Long Term Evolution) system FDD (FrequencyDivision Duplex, Frequency Division Duplexing (FDD)) pattern and TDD (Time Division Duplex, time division duplex) pattern.In the frame structure of fdd mode, the radio frame (radio frames) of a 10ms is 0.5ms by 20 length, and the slot (time slot) of numbering 0～19 forms, and it is subframe (subframe) i of 1ms that time slot 2i and 2i+1 form length.In the frame structure of tdd mode, the radio frame (radio frames) of a 10ms is long for the half frame (field) of 5ms forms by two, and field comprises 5 and longly is the subframe of 1ms (subframe).Subframe i is defined as 2 and longly is time slot 2i and the 2i+1 of 0.5ms.In two kinds of frame structures, for Normal CP (Normal Cyclic Prefix, standard cyclic prefix), the symbol that it is 66.7us that time slot comprises 7 length, wherein the CP length of first symbol is 5.21us, the CP length of all the other 6 symbols is 4.69us; For Extended CP (extended cyclic prefix), a time slot comprises 6 symbols, and the CP length of all symbols is 16.67us.
LTE has defined following three kinds of downlink physical control channels:
PCFICH (Physical Control Format Indicator Channel, Physical Control Format Indicator Channel): the indication of control channel form, be used in reference to be shown in and be used to transmit PDCCH (Physicaldownlink control channel in the subframe, the information of number of OFDM Physical Downlink Control Channel) (OFDM) symbol, PCFICH sends on first OFDM symbol of subframe, and the place frequency location is by system descending bandwidth and sub-district ID decision.
PHICH (Physical hybrid ARQ indicator channel, physical mixed automatic re-transmission indicating channel): the ACK/NACK feedback information of the H-ARQ of uplink.The number of PHICH, time-frequency position can be by system message among the PBCH and cell ID (ID) decisions.
PDCCH: be used for bearing downlink control information (comprising the uplink and downlink schedule information, uplink power control information).The form of Downlink Control Information (Downlink Control Information) is divided into following several: DCI format 0 is used for the scheduling of PUSCH (Physical Uplink Shared Channel); DCI format 1,1A, 1B, 1C, 1D are used for the different mode of a PDSCH (Physical Downlink Shared Channel) code word scheduling; DCI format 2,2A are used for the different mode of space division multiplexing; DCI format 3,3A are used for the different mode of the power control instruction of PUCCH (Physical Uplink Control Channel) and PUSCH.
The physical resource of PDCCH transmission is with CCE (Control Channel Element, the control channel unit) is unit, the size of a CCE is 9 REG, i.e. 36 Resource Element (Resource Unit), and a PDCCH may take 1,2,4 or 8 CCE.
For four kinds of PDCCH sizes that take 1,2,4,8 CCE, adopt tree-shaped Aggregation (polymerization), that is: the PDCCH of 1 CCE can be from any CCE position; The PDCCH of 2 CCE is from even number CCE position; The CCE position of the integral multiple of the PDCCH of 4 CCE since four; The CCE position of the integral multiple of the PDCCH of 8 CCE since eight.
PDCCH has 1,2,4 and 8 these several polymerization ranks, and each Aggregation level (polymerization rank) defines a search space (search volume), comprises the search volume of common (public) and UE specific (UE is proprietary).OFDM symbolic number that the controlled area that the CCE number of whole search volume is indicated by PCFICH in each descending sub frame is shared and the decision of the group number of PHICH.UE DCI format by transmission mode of living in the search volume carries out blind Detecting to all possible PDCCH code check.
UE (User Equipment, subscriber equipment) be set to based on following a kind of transmission mode (transmission mode) by high-level signaling is semi-static (semi-statically), receive the PDSCH transfer of data according to the indication of the PDCCH of the search volume of UE specific (UE is proprietary):
1.Single-antenna port; Port 0 (single antenna port; Port 0)
2.Transmit diversity (transmit diversity)
3.Open-loop spatial multiplexing (Open-Loop Spatial Multiplexing)
4.Closed-loop spatial multiplexing (Closed-Loop Spatial Multiplexing)
5.Multi-user MIMO (multiuser MIMO)
6.Closed-loop Rank=1 precoding (closed loop Rank=1 precoding)
7.Single-antenna port; Port 5 (single antenna port; Port 5)
If UE is set to (the Cell Radio Network TemporaryIdentifier with C-RNTI by high level, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI number) CRC (cyclic redundancy check (CRC)) of scrambling carries out the PDCCH decoding, and UE should be according to the respective sets incompatible decoding PDCCH PDSCH relevant with all that defines among the table 1-1.
If UE is set to (the semi-persistently Scheduled RadioNetwork Temporary Identifier with SPS-RNTI by high level, semi-persistent scheduling Cell Radio Network Temporary Identifier/Identity, Cell-RNTI number) CRC (cyclic redundancy check (CRC)) of scrambling carries out the PDCCH decoding, and UE should be according to the respective sets incompatible decoding PDCCH PDSCH relevant with all that defines among the table 1-2.
PDCCH and PDSCH that table 1-1:C-RNTI is provided with
PDCCH and PDSCH that table 1-2:SPS C-RNTI is provided with
The PDCCH that UE should detect one group of candidate in each non-DRX (non-Discontinuous Reception, non-discontinuous reception) subframe to be to obtain control information, detects to be meant according to all DCI format to be detected PDCCH in organizing is decoded.It is respectively that 4 and 8 common search volume and aggregation level are respectively 1,2,4,8 UE specific search volumes that UE should detect an aggregationlevel.Common and UE specific search volume may be overlapping.The search space of aggregation level definition is shown in table 1-3.The DCI format that UE should detect depends on the transmission mode that is provided with previously.
LTE Release-8 has defined 6 kinds of bandwidth: 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz.
LTE-Advanced (Further Advancements for E-UTRA) is the evolution version of LTE Release-8.Except that satisfying or surpassing 3GPP TR 25.913: all related needs of " Requirements for Evolved UTRA (E-UTRA) and Evolved UTRAN (E-UTRAN) ", also
Table 1-3:UE candidate PDCCH. to be checked
Meet or exceed the demand of the IMT-Advanced of ITU-R proposition.Wherein, the demand with LTE Release-8 backward compatibility is meant: the terminal of LTE Release-8 can be worked in the network of LTE-Advanced; The terminal of LTE-Advanced can be worked in the network of LTE Release-8.In addition, LTE-Advanced should be able to comprise frequency spectrum configuration (as the continuous frequency spectrum resource of 100MHz) the down work wideer than LTE Release-8, to reach higher performance and target peak speed in the frequency spectrum configuration of different sizes.Consider and the compatibility of LTE Release-8,, adopt the mode of Carier aggregation (carrier aggregation) for bandwidth greater than 20MHz, as shown in Figure 2, that is:
Two or more component carriers (component carriers) are assembled to support the downstream transmission bandwidth greater than 20MHz.
Terminal can receive one or more component carriers (component carriers) simultaneously by its ability.
There is the LTE-A terminal that surpasses the 20MHz receiving ability can receive transmission on a plurality of component carriers simultaneously.LTE Rel-8 terminal can only be received the transmission on the one-component carrier wave, if the structure of this component carrier is followed the Rel-8 standard.
At present, the transmission for Downlink Control Information is not corresponding description of form of PDCCH in the LTE-Advanced standard.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of transmission and detection method of Downlink Control Information, solve the transmission and the detection problem of Carier aggregation Downlink Control Information, help the compatibility of LTE-Advanced and LTE Release-8, help the realization of LTE-Advanced system.
In order to address the above problem, the invention provides a kind of sending method of Downlink Control Information, Downlink Control Information is carried in the base station in Physical Downlink Control Channel, send described Physical Downlink Control Channel by component carrier, by the component carrier at high-level signaling indicating terminal Physical Downlink Control Channel place.
Further, said method also can have following characteristics, and described high-level signaling is transmitted in described base station on one or more component carriers.
Further, said method also can have following characteristics, comprises the frequency location of component carrier, the system bandwidth of component carrier and one or more information in the transmission mode on the component carrier in the described high-level signaling.
Further, said method also can have following characteristics, comprises the beginning that indication component carrier Physical Downlink Control Channel detects/stop the time span that component carrier detects, one or more information such as time cycle that component carrier detects in the described high-level signaling.
Further, said method also can have following characteristics, also comprises detection mode in the described high-level signaling, indicates described terminal to detect the mode of Physical Downlink Control Channel.
Further, said method also can have following characteristics,
Described detection mode is a triggering mode, indicates described terminal to begin according to high-level signaling and the Physical Downlink Control Channel that stops on the component carrier detects;
Perhaps, described detection mode is a timing mode, indicates described terminal to detect according to the Physical Downlink Control Channel that high-level signaling begins on component carrier, continues to stop after the fixed time;
Perhaps, described detection mode is a periodic mode, indicates the beginning of described terminal periodic and the Physical Downlink Control Channel that stops on the component carrier detects.
The present invention proposes a kind of detection method of Downlink Control Information, terminal receives high-level signaling, component carrier according to the Physical Downlink Control Channel place of described high-level signaling indication detects Physical Downlink Control Channel on described component carrier, obtain Downlink Control Information.
Further, said method also can have following characteristics, described Downlink Control Information is the first kind Downlink Control Information and/or the second class Downlink Control Information, described first kind Downlink Control Information comprises publicly-owned Downlink Control Information and the proprietary Downlink Control Information of terminal, the relevant indication information of the proprietary Downlink Control Information of carrying first kind terminal in the described second class Downlink Control Information.
Further, said method also can have following characteristics, comprise following one or more information in the relevant indication information of the proprietary Downlink Control Information of first kind terminal that carries in the described second class Downlink Control Information: whether several component carriers have the proprietary Downlink Control Information transmission of terminal, the proprietary descending control information format of terminal on the component carrier, the Physical Downlink Control Channel of the proprietary Downlink Control Information of carrying terminal carries the control channel unit polymerization rank of the Physical Downlink Control Channel of the proprietary Downlink Control Information of terminal in the control channel unit of the proprietary search volume of terminal original position.
Further, said method also can have following characteristics, when described terminal detects the Physical Downlink Control Channel of a plurality of component carriers in a subframe, detects the first kind Downlink Control Information and the second class Downlink Control Information; When described terminal only detects the Physical Downlink Control Channel of one-component carrier wave in a subframe, only detect first kind Downlink Control Information.
Further, said method also can have following characteristics, described terminal on the component carrier at the second class Downlink Control Information place, the first blind Detecting second class Downlink Control Information, blind Detecting first kind Downlink Control Information again.
Further, said method also can have following characteristics, described terminal on the component carrier at the non-second class Downlink Control Information place, the publicly-owned Downlink Control Information of the first blind Detecting first kind, the proprietary Downlink Control Information of blind Detecting first kind terminal again.
Further, said method also can have following characteristics, described terminal detects PDCCH and obtains the second class Downlink Control Information, and wherein the relevant indication information of Cheng Zai the proprietary Downlink Control Information of first kind terminal conforms to the existing result of first kind Downlink Control Information that detection PDCCH obtains, and described terminal obtains the proprietary Downlink Control Information of first kind terminal according to the relevant indication information decoding of the proprietary Downlink Control Information of first kind terminal that carries in second class Downlink Control Information PDCCH.
Further, said method also can have following characteristics, described terminal does not detect the second class Downlink Control Information, the relevant indication information of the proprietary Downlink Control Information of first kind terminal that perhaps detects the second class Downlink Control Information but wherein carry does not conform to the existing result of first kind Downlink Control Information that detection PDCCH obtains, described terminal continues blind Detecting first kind Downlink Control Information and finishes up to search on the component carrier at the non-second class Downlink Control Information place.
Further, said method also can have following characteristics, described terminal is on the component carrier at the non-second class Downlink Control Information place, the publicly-owned Downlink Control Information of elder generation's blind Detecting first kind, according to the second class Downlink Control Information blind Detecting result, determine whether the proprietary Downlink Control Information of blind Detecting first kind terminal again.
Further, said method also can have following characteristics, when terminal detects the second class Downlink Control Information, on the component carrier at the non-second class Downlink Control Information place, according to the proprietary Downlink Control Information of the relevant indication information decoding PDCCH blind Detecting first kind terminal of the proprietary Downlink Control Information of first kind terminal that carries in the second class Downlink Control Information.
Further, said method also can have following characteristics, when terminal does not detect the second class Downlink Control Information, and on the component carrier at the non-second class Downlink Control Information place, the proprietary Downlink Control Information of blind Detecting first kind terminal not.
The invention provides a kind of sending method of Downlink Control Information, Downlink Control Information is carried in the base station in Physical Downlink Control Channel, send described Physical Downlink Control Channel by component carrier, described Downlink Control Information is the first kind Downlink Control Information and/or the second class Downlink Control Information, described first kind Downlink Control Information comprises publicly-owned Downlink Control Information and the proprietary Downlink Control Information of terminal, the relevant indication information of the proprietary Downlink Control Information of carrying first kind terminal in the described second class Downlink Control Information.
Further, said method also can have following characteristics, comprise following one or more information in the relevant indication information of the proprietary Downlink Control Information of first kind terminal that carries in the described second class Downlink Control Information: whether several component carriers have the proprietary Downlink Control Information transmission of terminal, the proprietary descending control information format of terminal on the component carrier, the Physical Downlink Control Channel of the proprietary Downlink Control Information of carrying terminal carries the control channel unit polymerization rank of the Physical Downlink Control Channel of the proprietary Downlink Control Information of terminal in the control channel unit of the proprietary search volume of terminal original position.
Further, said method also can have following characteristics, also carries the proprietary Downlink Control Information of terminal in its place component carrier in the described second class Downlink Control Information.
Further, said method also can have following characteristics, and the component carrier position at the form of the described second class Downlink Control Information and place thereof is indicated by high-level signaling.
The invention provides a kind of transmission and detection method of Downlink Control Information, solve the transmission and the detection problem of Carrieraggregation Downlink Control Information, the compatibility that helps LTE-Advanced and LTERelease-8 helps the realization of LTE-Advanced system.
Description of drawings
Fig. 1 is the frame structure schematic diagram of the FDD/TDD of LTE system pattern;
Fig. 2 is the transmission flow schematic diagram of Downlink Control Information of the present invention;
Fig. 3 is the first kind of the present invention/second class DCI schematic diagram.
Embodiment
Describe embodiments of the present invention in detail below with reference to embodiment, how the application technology means solve technical problem to the present invention whereby, and the implementation procedure of reaching technique effect can fully understand and implements according to this.
DCI of the present invention comprises two class DCI:
The control information of first kind DCI carrying component carrier corresponding downstream, wherein, first kind DCI comprises publicly-owned DCI and the proprietary DCI of terminal, promptly comprises publicly-owned DCI of the first kind and the proprietary DCI of first kind terminal.
The relevant indication information of the proprietary DCI of second class DCI carrying first kind terminal.The second class DCI also can carry the proprietary Downlink Control Information of terminal in its place component carrier.Promptly the second class DCI carries the relevant indication information of the proprietary DCI of first kind terminal of the proprietary DCI of one or more first kind terminals and all the other all (or parts), perhaps, the second class DCI only carries the relevant indication information of the proprietary DCI of first kind terminal of all the other all (or parts).
Wherein, the relevant indication information of the proprietary DCI of first kind terminal of second class DCI carrying specifically comprises: whether several component carriers have the proprietary DCI transmission of terminal, the proprietary DCI form of terminal, the PDCCH of the proprietary DCI of carrying terminal is in the CCE original position of UE specific search volume, one or more information such as CCE aggregation level of carrying the PDCCH of the proprietary DCI of terminal.
Wherein, when the second class DCI only carries the relevant indication information of proprietary DCI of first kind terminal of all the other all (or parts), this indication information can be the relevant indication information of uplink scheduling, perhaps the relevant indication information of descending scheduling, the perhaps relevant indication information of up-downgoing scheduling.The corresponding a kind of DCI form (DCI format) of each relevant indication information.
Wherein, when the second class DCI also carries the proprietary Downlink Control Information of terminal in its place component carrier, if this Downlink Control Information is a uplink scheduling information, the indication information that the proprietary DCI of first kind terminal that is carried is relevant also is the relevant indication information of uplink scheduling, the corresponding a kind of DCI form (DCI format) of the combination of each uplink scheduling information and the relevant indication information of uplink scheduling; If this Downlink Control Information is a down dispatch information, the indication information that the proprietary DCI of first kind terminal that is carried is relevant also is the relevant indication information of descending scheduling, the corresponding a kind of DCI form (DCI format) of the combination of each down dispatch information and the relevant indication information of descending scheduling.
The component carrier position at the form of the second class DCI and place is indicated by high-level signaling.
The present invention proposes a kind of sending method of Downlink Control Information, Downlink Control Information is carried in the base station in Physical Downlink Control Channel, send to terminal by component carrier.This Downlink Control Information is the first kind Downlink Control Information and/or the second class Downlink Control Information.
The invention allows for a kind of sending method of Downlink Control Information, comprise: Downlink Control Information is carried in the base station in PDCCH, send to terminal by component carrier, by the component carrier and the detection mode at the described PDCCH of high-level signaling indicating terminal place.
Described Downlink Control Information is the first kind DCI and/or the second class DCI.
The mode that has the detection of the LTE-A terminal PDCCH on each component carrier that receives a plurality of component carrier abilities simultaneously whether (perhaps whether to receive) and detect (reception) can independently be provided with by high-level signaling.
This high-level signaling can transmit on one or more component carriers of appointment.
Can comprise the frequency location of each component carrier, the system bandwidth of each component carrier, one or more information such as transmission mode of each component carrier in the high-level signaling.
Can comprise in the high-level signaling that each component carrier PDCCH of indication detects the beginning of (receptions)/stop (reception) time span that each component carrier detects, one or more information such as time cycle of (reception) of each component carrier detection.
Can be set to triggering mode, timing mode or periodic mode by the high-level signaling detection mode, wherein:
Triggering mode is meant the beginning of LTE-A terminal detection of PDCCH on each component carrier and stops all to be notified by high-level signaling;
Timing mode is meant that the beginning of LTE-A terminal detection of PDCCH on each component carrier notified by high-level signaling, and stops after the certain time.This duration can be notified by high-level signaling;
The detection that periodic mode is meant LTE-A terminal PDCCH on each component carrier begins periodically and stops by the setting of high-level signaling.
The invention allows for a kind of detection method of Downlink Control Information, comprise: terminal receives high-level signaling, and component carrier and detection mode by the PDCCH place of indicating in the high-level signaling detect PDCCH, obtain the Downlink Control Information that carries in PDCCH.
Described Downlink Control Information is the first kind Downlink Control Information and/or the second class Downlink Control Information.
When the LTE-A terminal only detects the PDCCH of one-component carrier wave in a subframe, only detect first kind DCI; When the LTE-A terminal detects the PDCCH of a plurality of component carriers in a subframe, detect the first kind DCI and the second class DCI.
The PDCCH that carries the second class DCI is only in the proprietary search volume of terminal, perhaps in publicly-owned and proprietary search volume.
The terminal PDCCH blind Detecting DCI mode of decoding on the first kind DCI and the second class DCI respective components carrier wave is:
On the component carrier at the second class DCI place, the first blind Detecting second class DCI, blind Detecting first kind DCI again;
On the component carrier at the non-second class DCI place, the publicly-owned DCI of the first blind Detecting first kind, the proprietary DCI of blind Detecting first kind terminal again.
PDCCH detects the second class DCI when decoding, and when indication information wherein conforms to the existing result of decoding PDCCH blind Detecting first kind DCI, on the component carrier at the non-second class DCI place, by the indication information that carries among the second class DCI, the proprietary DCI of decoding PDCCH blind Detecting first kind terminal.
PDCCH does not detect the second class DCI when decoding, or decoding PDCCH detects the second class DCI but the existing result of the first kind DCI that wherein indication information and the PDCCH blind check of decoding measure when not conforming to, and then the PDCCH blind Detecting of first kind DCI is proceeded to finish until search.
Perhaps
The terminal PDCCH blind Detecting DCI mode of decoding on two class DCI respective components carrier waves is:
On the component carrier at the second class DCI place, the first blind Detecting second class DCI, blind Detecting first kind DCI again;
On the component carrier at the non-second class DCI place, the publicly-owned DCI of the first blind Detecting first kind according to the second class DCI blind Detecting result, determines whether the proprietary DCI of blind Detecting first kind terminal again.
When decoding PDCCH detects the second class DCI, on the component carrier at the non-second class DCI place, by the indication information that carries among the second class DCI, the proprietary DCI of decoding PDCCH blind Detecting first kind terminal.
As decoding PDCCH when not detecting the second class DCI, then on the component carrier at the non-second class DCI place, the proprietary DCI of blind Detecting first kind terminal not.
Further specify the present invention below by specific embodiment.
The number of up-downgoing component carrier (component carrier) of system of setting up departments all is 3.Dotted line among Fig. 2 refers to the pair relationhip of up-downgoing component carrier.
The transmission flow of Downlink Control Information
Shown in Fig. 2 (a).The LTE-Advanced terminal initial has only distributed downlink component carrier DLCarrier#1.Receive the high-level signaling of PDSCH carrying at subframe N.This high-level signaling indicates this terminal at downlink component carrier DL Carrier# 1, and DL Carrier# 2 detect PDCCH on the DL Carrier# 3, and the second class DCI is on DL Carrier#1.The frequency location that can also comprise each component carrier in this high-level signaling, the system bandwidth of each component carrier, the transmission mode of each component carrier, the beginning of each component carrier PDCCH detection (reception)/stop, (reception) time span that each component carrier detects, one or more information such as time cycle of (reception) that each component carrier detects.
Terminal begins to carry out the PDCCH blind check of the first kind DCI and the second class DCI at subframe N+n, and wherein n is determined by high-level signaling.High-level signaling can be indicated different working methods, as:
1, triggering mode
Shown in Fig. 2 (b), the subframe M of terminal behind subframe N+n receives the high-level signaling of PDSCH carrying.This high-level signaling indicating terminal stops downlink component carrier DL Carrier# 1, and the PDCCH of DL Carrier# 3 detects.Terminal begins no longer to carry out the PDCCH blind check of the second class DCI at subframe M+k, only carries out first kind DCI PDCCH blind Detecting at downlink component carrier DL Carrier# 2, and wherein k is determined by high-level signaling.
2, timing mode
Shown in Fig. 2 (c), terminal is only carried out first kind DCI PDCCH blind Detecting in the PDCCH blind check that subframe N+n+T stops the second class DCI on the downlink component carrier DL of high-level signaling appointment Carrier#2.Wherein T is the number of sub frames of high-level signaling appointment.
3, periodic mode
Shown in Fig. 2 (d), terminal is only carried out first kind DCIPDCCH blind Detecting in the PDCCH blind Detecting that subframe N+n+T stops the second class DCI on the downlink component carrier DL of high-level signaling appointment Carrier#2.Begin to carry out the PDCCH blind Detecting of the first kind DCI and the second class DCI once more at subframe N+n+T+D.T wherein, D is determined by high-level signaling.This detection mode is carried out periodically, until there being the high-level signaling indication to stop.
The first kind DCI and the second class DCI
The indication information that the proprietary DCI of first kind terminal that comprises among the second class DCI is relevant can comprise following one or more information:
The one-component carrier wave is represented with 1bit.As not having the proprietary DCI of UE in 0 this component carrier of expression; 1 this component carrier of expression has the proprietary DCI of UE.
Indication DCI form
The one-component carrier wave is represented with 2bit.As not having the proprietary DCI of UE in 00 this component carrier of expression; In 01 this component carrier of expression a kind of DCI form is arranged; In 10 these component carriers of expression another kind of DCI form is arranged; In 11 these component carriers of expression two kinds of DCI forms are arranged.
The proprietary a kind of DCI form of terminal is represented with 3bit on the one-component carrier wave.Wherein 1bit represents not have in this component carrier/have this DCI form with 0/1; 2bit represents the CCEaggregation level of this DCI form, and as 00,01,10,11 corresponding respectively CCE aggregation level are 1,2,4,8.
The proprietary a kind of DCI form of terminal is represented with 3bit on the one-component carrier wave.Wherein there is not/has this DCI form in 000 this component carrier of expression; The CCE deviation post of 001～110 difference corresponding 1～6.
The concrete method for expressing of above-mentioned each indication information is an example only, and the present invention does not limit this.
The indication information of a plurality of component carriers can be combined by the indication information of each component carrier.
As shown in Figure 3, the PDCCH that carries the second class DCI is on downlink component carrier DL Carrier# 1, wherein this PDCCH loaded information comprises the Downlink Control Information (being the proprietary Downlink Control Information of terminal) of the DL Carrier# 1 at place, and downlink component carrier DL Carrier# 2, the indication information that the proprietary DCI of the first kind UE of DL Carrier# 3 is relevant.The relevant indication information of the proprietary DCI of UE among the XX respective components carrier wave DL Carrier# 2 wherein, the indication information of the proprietary DCI of UE among the YY respective components carrier wave DL Carrier# 3.
The detection mode of the first kind DCI and the second class DCI
As shown in Figure 3, decoding PDCCH blind Detecting DCI mode is on the two class DCI respective components carrier waves:
1) on component carrier DL Carrier# 1, the first blind Detecting second class DCI, blind Detecting first kind DCI again;
2) on component carrier DL Carrier# 2 and component carrier DL Carrier# 3, the publicly-owned DCI of the first blind Detecting first kind, the proprietary DCI of blind Detecting first kind terminal again;
The PDCCH that carries the second class DCI is in the proprietary search volume of terminal, perhaps in the proprietary search volume of publicly-owned and terminal.
When detecting the second class DCI at component carrier DL Carrier# 1 decoding PDCCH, and when the existing result of decoding PDCCH blind Detecting first kind DCI conforms on indication information wherein and component carrier DL Carrier# 2 and the component carrier DL Carrier# 3, as the DCI format on second class DCI indication component carrier DL Carrier# 2 and the component carrier DL Carrier# 3, CCE aggregation level, during detected coming to the same thing on information such as CCE original position and the respective components carrier wave, then on component carrier DLCarrier# 2 and component carrier DL Carrier# 3, by the indication information that carries among the second class DCI proprietary DCI of PDCCH blind Detecting first kind terminal that decodes.
When not detecting the second class DCI at component carrier DL Carrier# 1 decoding PDCCH, or decoding PDCCH detects the second class DCI but the existing result of the detected first kind DCI of PDCCH that decodes on wherein indication information and component carrier DL Carrier# 2 and the component carrier DL Carrier# 3 when not conforming to, be DCI format, CCE aggregation level, when the detected result on indication informations such as CCE original position and the respective components carrier wave was inequality, then the PDCCH blind check of first kind DCI was proceeded to finish until search.
Perhaps
Decoding PDCCH blind Detecting DCI mode is on the two class DCI respective components carrier waves:
1) on component carrier DL Carrier# 1, the first blind Detecting second class DCI, blind Detecting first kind DCI again;
2) on component carrier DL Carrier# 2 and component carrier DL Carrier# 3, the publicly-owned DCI of the first blind Detecting first kind according to the last second class DCI blind Detecting result of component carrier DL Carrier# 1, determines whether the proprietary DCI of blind Detecting first kind terminal again;
The PDCCH that carries the second class DCI is only in the proprietary search volume of terminal, perhaps in publicly-owned and search volume that terminal is proprietary.
When component carrier DL Carrier# 1 decoding PDCCH detects the second class DCI, on component carrier DL Carrier# 2 and component carrier DL Carrier# 3, by the indication information that carries among the second class DCI, the proprietary DCI of decoding PDCCH blind Detecting first kind terminal.
When component carrier DL Carrier# 1 decoding PDCCH does not detect the second class DCI, then on component carrier DL Carrier# 2 and component carrier DL Carrier# 3, do not continue the proprietary DCI of blind Detecting first kind terminal.
Claims (21)
1, a kind of sending method of Downlink Control Information, it is characterized in that, Downlink Control Information is carried in the base station in Physical Downlink Control Channel, send described Physical Downlink Control Channel by component carrier, by the component carrier at high-level signaling indicating terminal Physical Downlink Control Channel place.
2, the method for claim 1 is characterized in that, described high-level signaling is transmitted in described base station on one or more component carriers.
3, the method for claim 1 is characterized in that, comprises the frequency location of component carrier, the system bandwidth of component carrier and one or more information in the transmission mode on the component carrier in the described high-level signaling.
4, the method for claim 1, it is characterized in that, comprise the beginning that indication component carrier Physical Downlink Control Channel detects/stop the time span that component carrier detects, one or more information such as time cycle that component carrier detects in the described high-level signaling.
5, the method for claim 1 is characterized in that, also comprises detection mode in the described high-level signaling, indicates described terminal to detect the mode of Physical Downlink Control Channel.
6, method as claimed in claim 5 is characterized in that,
Described detection mode is a triggering mode, indicates described terminal to begin according to high-level signaling and the Physical Downlink Control Channel that stops on the component carrier detects;
Perhaps, described detection mode is a timing mode, indicates described terminal to detect according to the Physical Downlink Control Channel that high-level signaling begins on component carrier, continues to stop after the fixed time;
Perhaps, described detection mode is a periodic mode, indicates the beginning of described terminal periodic and the Physical Downlink Control Channel that stops on the component carrier detects.
7, a kind of detection method of Downlink Control Information, it is characterized in that terminal receives high-level signaling, according to the component carrier at the Physical Downlink Control Channel place of described high-level signaling indication, on described component carrier, detect Physical Downlink Control Channel, obtain Downlink Control Information.
8, method as claimed in claim 7, it is characterized in that, described Downlink Control Information is the first kind Downlink Control Information and/or the second class Downlink Control Information, described first kind Downlink Control Information comprises publicly-owned Downlink Control Information and the proprietary Downlink Control Information of terminal, the relevant indication information of the proprietary Downlink Control Information of carrying first kind terminal in the described second class Downlink Control Information.
9, method as claimed in claim 8, it is characterized in that, comprise following one or more information in the relevant indication information of the proprietary Downlink Control Information of first kind terminal that carries in the described second class Downlink Control Information: whether several component carriers have the proprietary Downlink Control Information transmission of terminal, the proprietary descending control information format of terminal on the component carrier, the Physical Downlink Control Channel of the proprietary Downlink Control Information of carrying terminal carries the control channel unit polymerization rank of the Physical Downlink Control Channel of the proprietary Downlink Control Information of terminal in the control channel unit of the proprietary search volume of terminal original position.
10, method as claimed in claim 8 is characterized in that, when described terminal detects the Physical Downlink Control Channel of a plurality of component carriers in a subframe, detects the first kind Downlink Control Information and the second class Downlink Control Information; When described terminal only detects the Physical Downlink Control Channel of one-component carrier wave in a subframe, only detect first kind Downlink Control Information.
11, method as claimed in claim 8 is characterized in that, described terminal on the component carrier at the second class Downlink Control Information place, the first blind Detecting second class Downlink Control Information, blind Detecting first kind Downlink Control Information again.
12, method as claimed in claim 11 is characterized in that, described terminal on the component carrier at the non-second class Downlink Control Information place, the publicly-owned Downlink Control Information of the first blind Detecting first kind, the proprietary Downlink Control Information of blind Detecting first kind terminal again.
13, method as claimed in claim 12, it is characterized in that, described terminal detects PDCCH and obtains the second class Downlink Control Information, and wherein the relevant indication information of Cheng Zai the proprietary Downlink Control Information of first kind terminal conforms to the existing result of first kind Downlink Control Information that detection PDCCH obtains, and described terminal obtains the proprietary Downlink Control Information of first kind terminal according to the relevant indication information decoding of the proprietary Downlink Control Information of first kind terminal that carries in second class Downlink Control Information PDCCH.
14, method as claimed in claim 12, it is characterized in that, described terminal does not detect the second class Downlink Control Information, the relevant indication information of the proprietary Downlink Control Information of first kind terminal that perhaps detects the second class Downlink Control Information but wherein carry does not conform to the existing result of first kind Downlink Control Information that detection PDCCH obtains, described terminal continues blind Detecting first kind Downlink Control Information and finishes up to search on the component carrier at the non-second class Downlink Control Information place.
15, method as claimed in claim 11, it is characterized in that, described terminal is on the component carrier at the non-second class Downlink Control Information place, the publicly-owned Downlink Control Information of elder generation's blind Detecting first kind, according to the second class Downlink Control Information blind Detecting result, determine whether the proprietary Downlink Control Information of blind Detecting first kind terminal again.
16, method as claimed in claim 15, it is characterized in that, when terminal detects the second class Downlink Control Information, on the component carrier at the non-second class Downlink Control Information place, according to the proprietary Downlink Control Information of the relevant indication information decoding PDCCH blind Detecting first kind terminal of the proprietary Downlink Control Information of first kind terminal that carries in the second class Downlink Control Information.
17, method as claimed in claim 15 is characterized in that, when terminal does not detect the second class Downlink Control Information, and on the component carrier at the non-second class Downlink Control Information place, the proprietary Downlink Control Information of blind Detecting first kind terminal not.
18, a kind of sending method of Downlink Control Information, it is characterized in that, Downlink Control Information is carried in the base station in Physical Downlink Control Channel, send described Physical Downlink Control Channel by component carrier, described Downlink Control Information is the first kind Downlink Control Information and/or the second class Downlink Control Information, described first kind Downlink Control Information comprises publicly-owned Downlink Control Information and the proprietary Downlink Control Information of terminal, the relevant indication information of the proprietary Downlink Control Information of carrying first kind terminal in the described second class Downlink Control Information.
19, method as claimed in claim 18, it is characterized in that, comprise following one or more information in the relevant indication information of the proprietary Downlink Control Information of first kind terminal that carries in the described second class Downlink Control Information: whether several component carriers have the proprietary Downlink Control Information transmission of terminal, the proprietary descending control information format of terminal on the component carrier, the Physical Downlink Control Channel of the proprietary Downlink Control Information of carrying terminal carries the control channel unit polymerization rank of the Physical Downlink Control Channel of the proprietary Downlink Control Information of terminal in the control channel unit of the proprietary search volume of terminal original position.
20, as claim 18 or 19 described methods, it is characterized in that, also carry the proprietary Downlink Control Information of terminal in its place component carrier in the described second class Downlink Control Information.
As claim 18 or 19 described methods, it is characterized in that 21, the component carrier position at the form of the described second class Downlink Control Information and place thereof is indicated by high-level signaling.
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