CN105991260A - Method and device for transmitting downlink control signaling for large-scale carrier aggregation - Google Patents

Abstract

The invention provides a method and a device for transmitting a downlink control signaling for large-scale carrier aggregation. The method comprises the steps of dividing multiple carriers needing large-scale carrier aggregation of a piece of UE into multiple carrier groups, notifying the UE of the relationship between the indexes of the divided carrier groups and the carriers, and sending the PDCCH (Physical Downlink Control Channel) of one carrier group in the multiple carrier groups to the UE, wherein a CIF (Carrier Indicator Field) in the DCI (Downlink Control Information) of the PDCCH is used to indicate the scheduled carriers in the carrier group.

Description

The method and apparatus transmitting the descending control signaling for extensive carrier aggregation

Technical field

The present invention generally relates to wireless communication field, more specifically, relates to pass The method and apparatus of the defeated downlink control signaling for extensive carrier aggregation.

Background technology

Carrier aggregation (Carrier is introduced in third generation partner program (3GPP) Rel-10 Aggregation, CA) to support basic CA feature, enabling polymerization same number of frames structure Up to 5 carrier waves.In traditional carrier aggregation, support across carrier dispatching.To this end, Physical downlink control channel (Physical Downlink Control Channel, PDCCH) Carry the descending control for one or more subscriber equipmenies (User Equipment, UE) Information (Downlink Control Information, DCI), uses carrier wave instruction in DCI Symbol field (Carrier Indicator Field, CIF) indicates which carrier wave of scheduling.Defined CIF field include 3 bits, it may indicate that most 8 carrier waves.At down direction On, PDCCH and the Physical Downlink Shared Channel (Physical for transmitting downlink data Downlink Shared Channel, PDSCH) time division multiplex, and in the upstream direction, make Come with Physical Uplink Control Channel (Physical Uplink Control Channel, PUCCH) Transmit hybrid automatic repeat-request (the Hybrid Automatic that the data in PDSCH are transmitted Repeat-reQuest, HARQ) confirm (positive acknowledgment (ACKnowledgement, ACK) Or Negative Acknowledgement (Negative ACKnowledgement, NACK)).

In present scheme, CIF is for across carrier dispatching.When improve carrier aggregation scale with When being polymerized more multicarrier (such as more than 8 carrier waves), a kind of directly solution be by CIF is extended to more than 3 bits to indicate respectively each carrier wave being polymerized.But, right Current standards will be produced a very large impact by this extension of CIF, and the size of such as DCI is necessary Increase.If additionally, main plot (Primary cell, PCell) needs to dispatch every other Secondary cell (Secondary cell, SCell), such as 20 carrier waves, then for a UE DCI signaling will consume all control channel element (the Control Channel on PCell Element, CCE) resource.

Summary of the invention

Control to this end, the present invention proposes a kind of downlink for extensive carrier aggregation The design of signaling and transmission method.

According to an aspect of the present invention, it is proposed that a kind of for transmitting for greatly in a base station The method of the downlink control signaling of scale carrier aggregation, including: will be for a UE The multiple carrier waves carrying out extensive carrier aggregation be divided into multiple carrier wave set；To be divided Carrier wave set index and carrier wave between incidence relation notify to this UE；And it is many by this PDCCH in individual carrier wave set sends DCI to this UE, and wherein the CIF in this DCI is used for Indicate the carrier wave being scheduled in this carrier wave set.

It can be seen that the thought of this inventive aspect is to reuse as far as possible current descending Link controls signaling format (such as CIF), and the carrier wave of big quantity is divided into different carrier waves Group, to support extensive carrier aggregation.For each carrier wave set in these carrier wave set, Current downlink control signaling can be reused well.

But, PUCCH resource distribution may be brought problem by this grouping mechanism, different The PUCCH resource of carrier wave set is it may happen that conflict.

To this end, according to a preferred aspect of the present invention, said method also includes by being divided Multiple carrier wave set in each carrier wave set determine that the group of the PUCCH for this carrier wave set is special Fixed skew；And this group particular offset is sent to this UE.

According to another aspect of the present invention, it is provided that a kind of for receiving in UE for greatly The method of the downlink control signaling of scale carrier aggregation, including: from the service base of this UE Stand the incidence relation between the index and the carrier wave that receive multiple carrier wave set, the most the plurality of carrier wave Group is to obtain by being grouped the multiple carrier waves carrying out extensive carrier aggregation；With And from this serving BS by PDCCH reception DCI the plurality of carrier wave set, wherein should CIF in DCI is for indicating the carrier wave being scheduled in this carrier wave set.

In a kind of preferred implementation, the method also includes: receive for this from this serving BS The group particular offset of each carrier wave set in multiple carrier wave set；And based on this group particular offset Determine the PUCCH resource for feeding back ACK/NACK of each carrier wave set.

According to another aspect of the present invention, it is provided that a kind of for transmit in a base station for The device of the downlink control signaling of extensive carrier aggregation, including: grouped element 510, For the multiple carrier waves carrying out extensive carrier aggregation for a UE are divided into many Individual carrier wave set；Notification unit, for by between index and the carrier wave of the carrier wave set divided Incidence relation notifies to this UE；And transmitting element, for by the plurality of carrier wave set PDCCH sends DCI to this UE, and wherein the CIF in this DCI is used for indicating this carrier wave set In the carrier wave that is scheduled.

In a kind of preferred implementation, this device also includes: group particular offset determines unit, uses Each carrier wave set in the multiple carrier wave set by being divided determines for this carrier wave set The group particular offset of PUCCH, and wherein this group particular offset is also sent by this transmitting element To this UE.

According to a further aspect of the invention, it is provided that a kind of for receiving in UE for greatly The device of the downlink control signaling of scale carrier aggregation, including: first receives unit, Association between index and the carrier wave receiving multiple carrier wave set from the serving BS of this UE Relation, the most the plurality of carrier wave set is by the multiple loads carrying out extensive carrier aggregation Ripple carries out being grouped and obtains；And second receive unit, for from this serving BS by should PDCCH reception DCI in multiple carrier wave set, wherein the CIF in this DCI is used for indicating this The carrier wave being scheduled in carrier wave set.

In a kind of preferred implementation, this device also includes: the 3rd receives unit, for from this Serving BS receives the group particular offset for each carrier wave set in the plurality of carrier wave set；With And determine unit, for determining that each carrier wave set is for feeding back based on this group particular offset ACK/NACK PUCCH resource.

Utilize aforementioned aspect of the present invention and preferred aspect, it is possible to reuse current as far as possible Descending control signaling is to support extensive carrier aggregation, and also further enhancing PUCCH Distribution mechanism.

Accompanying drawing explanation

Description by the detailed description of the invention below with reference to the present invention given by drawings below Afterwards, it is better understood with the present invention, and other objects of the present invention, details, feature Will become apparent from advantage.In the accompanying drawings:

Fig. 1 show one according to embodiment of the present invention for transmit in a base station for The flow chart of the method for the downlink control signaling of extensive carrier aggregation；

Fig. 2 shows showing of the carrier wave packet for extensive carrier aggregation according to the present invention It is intended to；

Fig. 3 shows that issuable PUCCH resource is divided according to the embodiment of the present invention Join the schematic diagram of conflict；

Fig. 4 shows that the one according to embodiment of the present invention is for receiving for greatly in UE The flow chart of the method for the downlink control signaling of scale carrier aggregation；

Fig. 5 show one according to embodiment of the present invention for transmit in a base station for The block diagram of the device of the downlink control signaling of extensive carrier aggregation；And

Fig. 6 shows that the one according to embodiment of the present invention is for receiving for greatly in UE The block diagram of the device of the downlink control signaling of scale carrier aggregation.

Detailed description of the invention

It is more fully described the preferred embodiment of the present invention below with reference to accompanying drawings.Although it is attached Figure shows the preferred embodiment of the present invention, however, it is to be appreciated that can be with various shapes Formula realizes the present invention and should not limited by embodiments set forth herein.On the contrary, it is provided that this A little embodiments are to make the present invention more thorough and complete, and can be by the present invention's What scope was complete conveys to those skilled in the art.

Fig. 1 show one according to embodiment of the present invention for transmit in a base station for The flow chart of the method 100 of the downlink control signaling of extensive carrier aggregation.Method 100 Such as can be performed by the serving BS of one or more UE.In the following description, will clothes Business base station is referred to as base station 1, and the UE that base station 1 is serviced is referred to as UE 2.

As shown in fig. 1, method 100 includes step 110, and wherein base station 1 will be for UE 2 The multiple carrier waves carrying out extensive carrier aggregation be divided into multiple carrier wave set.

In current DCI format, CIF field is 3 bits, and it at most may indicate that 8 Individual carrier wave.

It is preferred, therefore, that the number N of the carrier wave set divided_groupCan be expressed as:

Wherein,Represent the operator that rounds up.Such as, in an example, to UE 2 For want 2 carrier waves of polyase 13.The number N of the carrier wave set therefore divided_groupIt is 4, is drawn The carrier wave set divided can be expressed as carrier wave set 0, carrier wave set 1, carrier wave set 2 and carrier wave set 3.If UE 2 needs to be polymerized 17 carrier waves, if each group contains up to 5 carrier waves, Round up according to above-mentioned formula and need points 4 groups, such as carrier wave set 0, carrier wave set 1 and carrier wave Group 2 all comprises 5 carrier waves, and carrier wave set 3 comprises 2 carrier waves.Fig. 2 shows according to this The schematic diagram that the carrier wave for extensive carrier aggregation of invention is grouped.

But, it will be understood by those skilled in the art that and the invention is not limited in this.At weight On the premise of current DCI format, the number of carrier wave comprised in each carrier wave set can be 1-8 In any one, or different carrier group can comprise the carrier wave of varying number, thus right In above-mentioned situation, the quantity of the carrier wave set divided can be any one in 4 to 32.

It follows that in step 120, base station 1 by the index of carrier wave set divided and carrier wave it Between incidence relation notify to UE 2.

In a kind of preferred implementation, base station 1 is by (the such as Radio Resource control of higher signaling System (Radio Resource Control, RRC) signaling) rope of carrier wave set is notified to UE 2 Draw the incidence relation between carrier wave.Here, the association between index and the carrier wave of carrier wave set Relation can include which carrier wave the index of all carrier wave set and corresponding carrier wave set comprise. If base station 1 is simultaneously need to configure across carrier dispatching for UE 2, now can only across carrier dispatching It is applicable in carrier wave set, such as carrier wave set 1, when certain in carrier wave set 1 carries Ripple (i.e. SCell) can be across other carrier wave in carrier dispatching group, it is impossible to across carrier dispatching its Carrier wave in its group.

In each carrier wave set divided, base station 1 can be that each carrier wave distributes in this load Sole carrier index in ripple group.Such as, 8 carrier waves are comprised for above-mentioned each carrier wave set Situation, base station 1 can be that 8 carrier waves in each carrier wave set are respectively allocated one and are positioned at 0 Sole carrier index between 7.

Additionally, base station 1 can also configure across carrier dispatching.For example, it is assumed that PCell is positioned at load In ripple group 0, carrier index is the position of 0, then during PCell can dispatch this carrier wave set 0 Other 7 carrier waves (SCell).

In step 130, base station 1 by the PDCCH in the plurality of carrier wave set to UE 2 Sending DCI, the CIF in DCI is for indicating the carrier wave being scheduled in this carrier wave set.If DCI In there is no CIF, then it represents that this carrier dispatching oneself.

Here, in step 130, the CIF of 3 bits in current DCI format is reused Field, to indicate the carrier wave being scheduled in specific carriers group.

Above-mentioned steps by method 100, it is possible to reusing current downlink as far as possible More massive carrier aggregation is supported in the case of controlling signaling format.But, this packet The distribution of PUCCH resource may be brought problem, the PUCCH resource of different groups by mechanism It may happen that conflict.

Specifically, if the quantity of downlink carrier group can be used for more than UE Upper quantity (the carrier wave set such as, divided sending uplink control signaling carrier wave of PUCCH Quantity be 5, and UE can be used on PUCCH send uplink control signaling carrier wave Quantity be 2), then may transmit for multiple carrier wave set on a carrier wave PUCCH。

Such as, utilize traditional mechanism, in FDD system, for examining in subframe n-4 For the PDSCH transmission indicated by DCI measured, UE should use by equation below (2) PUCCH resource determined, transmits the HARQ for this PDSCH in subframe n ACK/NACK::

$n_{\mathrm{PUCCH}}^{(1,\tilde{p})}=n_{\mathrm{CCE}}+N_{\mathrm{PUCCH}}^{\left(1\right)},---\left(2\right)$

Wherein, n_CCEIt is (to be i.e. used for for transmitting the numbering of a CCE of the DCI of correspondence distribution Build the minimum CCE index of this DCI),By base station at system information block (SIB) Configuring in message, p instruction index is the antenna port of p.

In traditional TDD system, for the DCI detected in subframe n-k (k >=4) For indicated PDSCH transmission, UE uses the PUCCH resource that formula (3) determines, The HARQ ACK/NACK for this PDSCH is transmitted in subframe n.

$n_{\mathrm{PUCCH}}^{(1,\tilde{p})}={\mathrm{\Δ}}_c+n_{\mathrm{CCE}}+N_{\mathrm{PUCCH}}^{\left(1\right)}---\left(3\right)$

In formula (3), Δ_cIt is the parameter relevant to TDD uplink/downlink sub-frame configuration, Δ_c Circular be referred in standard 3GPP TS 36.211 regulation, n_CCEBe for The numbering of the oneth CCE of the DCI distribution that transmission is corresponding is (i.e. for building the minimum of this DCI CCE indexes),Being configured in system information block (SIB) message by base station, p refers to Show the index antenna port for p.

For extensive carrier aggregation, if this UE of scheduling in different carrier group n_CCEIt is worth identical, then based on formula (2) or formula (3), the PUCCH of different carrier group May transmit on a SCell, consequently, it is possible to clash.Fig. 3 shows according to this Invention embodiment institute issuable PUCCH resource distribution conflict schematic diagram.Such as figure Shown in 3, it is assumed that carrier wave set 0 and carrier wave set 1 are for dispatching the n of the DCI of this UE_CCEValue Identical, and the ACK/NACK needs of the two group are at the PUCCH of same SCell Upper transmission, then according to formula (2) or formula (3), in carrier wave set 0 and carrier wave set 1 The PUCCH resource that determines of component carrier CC2 identical, this will cause resource contention.

To this end, according to a preferred aspect of the present invention, method 100 also include under The mechanism of PUCCH resource distribution is strengthened on the basis of the packet of row carrier wave.

Specifically, method 100 can also include step 140, and wherein base station 1 is by being divided Multiple carrier wave set in each carrier wave set determine that the group of the PUCCH for this carrier wave set is special Surely offset and send it to UE 2.

In one implementation, group particular offset can be configured by base station 1 and be believed by high level (such as RRC signaling) is made to be sent to UE 2.

For in a kind of realization of PDCCH, it is assumed thatFor i-th carrier wave set The group particular offset of PUCCH, then in i-th carrier wave set, for FDD (FDD) For the Serving cell of a configuration, for the DCI indication detected in subframe n-4 For the PDSCH transmission shown, UE should use the PUCCH determined by equation below (4) Resource(PUCCH resource of i-th carrier wave set) is transmitted for this in subframe n The HARQ ACK/NACK of PDSCH:

$n_{\mathrm{PUCCH}}^{(1,\tilde{p})}=n_{\mathrm{CCE}}+N_{\mathrm{PUCCH}}^{\left(1\right)}+{\mathrm{\Δ}}_{\mathrm{group}}^i,---\left(4\right)$

Wherein, n_CCEIt is (to be i.e. used for for transmitting the numbering of a CCE of the DCI of correspondence distribution Build the minimum CCE index of DCI),Configured by high-level signaling by base station, Being the group particular offset of the PUCCH for i-th carrier wave set as above, p indicates rope It is cited as the antenna port of p.

For in the another kind of realization of the PDCCH (EPDCCH) strengthened, it is assumed that also draw Enter the group particular offset of the PUCCH for i-th carrier wave setThen at i-th carrier wave Group, for detect in subframe n-4 on EPDCCH transmission DCI indicated by For PDSCH transmission, UE should use and be determined by equation below (5) and (6) PUCCH resource(PUCCH resource of i-th carrier wave set) is transmitted in subframe n HARQ ACK/NACK for this PDSCH:

If for each carrier wave set, EPDCCH-PRB-set q is arranged to distribution Formula transmit, then in this carrier wave set for feeding back ACK/NACK PUCCH resource () For:

$n_{\mathrm{PUCCH},j}^{\left(1\right)}=n_{\mathrm{CCE},q}+{\mathrm{\Δ}}_{\mathrm{ARO}}{N}_{\mathrm{PUCCH},q}^{\left(\mathrm{el}\right)}+{\mathrm{\Δ}}_{\mathrm{group}}^i;---\left(5\right)$

If for each carrier wave set, EPDCCH-PRB-set q is arranged to concentrate Formula transmit, then in this carrier wave set for feeding back ACK/NACK PUCCH resource () For:

Wherein, n_{ECCE, q}It is for the correspondence transmitting in EPDCCH-PRB-set q in this carrier wave set The numbering of the CCE (ECCE) of the first enhancing of DCI distribution is (i.e. for building DCI Low ECCE indexes), Δ_AROFor DCI lattice according to corresponding EPDCCH in this carrier wave set HARQ ACK resource offset field in formula determines, for EPDCCH-PRB-set q'sConfigured by higher level parameters pucch-ResourceStartOffset-r11, for EPDCCH-PRB-set q'sIn standard 3GPP TS 36.211 specify, n ' by Antenna port used in EPDCCH localized transmission determines, j is to believe with HARQ-ACK Road selects the parameter that (HARQ-ACK channel selection) is relevant, and its value is 0≤j≤A-1, A ∈ { 2,3,4}.

It it is more than the embodiment for FDD.Group technology in the present invention and at PUCCH The thought introducing carrier wave set particular offset in resource distribution is equally applicable to TDD system.That is: In each carrier wave set, being assigned as of PUCCH resource is distributed in original PUCCH resource On the basis of add a specific side-play amount of carrier wave set.The particular offset of each carrier wave set Can be different.

Such as, according to above-mentioned formula (3), in the one for TDD system realizes, AssumeIt is the group particular offset of the PUCCH for i-th carrier wave set, then i-th Individual carrier wave set, for the Serving cell of FDD and a configuration, in subframe n-4 In for the PDSCH transmission indicated by DCI that detects, UE should use by following The PUCCH resource that formula (7) determines(PUCCH resource of i-th carrier wave set) The HARQ ACK/NACK for this PDSCH is transmitted in subframe n:

$n_{\mathrm{PUCCH}}^{(1,\tilde{p})}={{\mathrm{\Δ}}_c+n}_{\mathrm{CCE}}+N_{\mathrm{PUCCH}}^{\left(1\right)}+{\mathrm{\Δ}}_{\mathrm{group}}^i---\left(7\right)$

Wherein, similar with in formula (3), in formula (7), Δ_cBe with on TDD The parameter that the configuration of row/descending sub frame is relevant, Δ_cCircular be referred to standard 3GPP TS 36.211 specifies, n_CCEIt it is the volume for transmitting the CCE that the DCI of correspondence distributes Number (i.e. for build this DCI minimum CCE index),Believed in system by base station Configuring in breath block (SIB) message, p instruction index is the antenna port of p.

It is appreciated that in the determination of above-mentioned PUCCH resource, specific partially except introducing group Outside shifting, used in the determination of other parameter and PUCCH resource of the prior art Same or similar.

Fig. 4 shows that the one according to embodiment of the present invention is for receiving for greatly in UE The flow chart of the method 400 of the downlink control signaling of scale carrier aggregation.Method 400 Such as can be performed by UE 2.

As shown in Figure 4, method 400 includes step 410, and wherein UE 2 is from serving BS Incidence relation between 1 index and the carrier wave receiving multiple carrier wave set, the most the plurality of carrier wave set It is to obtain by the multiple carrier waves carrying out extensive carrier aggregation are grouped.

It follows that in step 420, UE 2 from base station 1 by the plurality of carrier wave set PDCCH reception DCI, wherein the CIF in this DCI is used for indicating in this carrier wave set and is scheduled Carrier wave.

In one implementation, when UE 2 receives the PDCCH of the carrier wave set comprising PCell, It knows the carrier wave scheduled in PCell (SCell) according to the CIF in the DCI of PDCCH.

Additionally, UE 2 can also receive for each load the plurality of carrier wave set from base station 1 The group particular offset of ripple group for determine each carrier wave set for feeding back ACK/NACK's PUCCH resource (step 430).

Here, group particular offset can be configured by base station 1 and pass through high-level signaling (such as RRC signaling) receive from base station 1.

In step 440, UE 2 according to this group particular offset (more specifically, according to above-mentioned In formula (4)-(6) one) determine its PUCCH for feeding back ACK/NACK Resource, and determined by utilization, PUCCH resource sends for the PDCCH received with it The confirmation message of the data transmission of corresponding PDSCH.Wherein, PUCCH resource is really Fixed as it has been described above, repeat no more here.

Utilize this group particular offset, the PUCCH resource conflict between different group can be avoided.

Fig. 5 show one according to embodiment of the present invention for transmit in a base station for The block diagram of the device 500 of the downlink control signaling of extensive carrier aggregation.Device 500 Can be realized or realize by base station 1 in base station 1.

As shown in Figure 5, device 500 includes grouped element 510, and being used for will be for one The multiple carrier waves carrying out extensive carrier aggregation of UE are divided into multiple carrier wave set；Advice note Unit 520, for the incidence relation between index and the carrier wave of the carrier wave set divided notified to This UE；And transmitting element 530, for by the PDCCH in the plurality of carrier wave set to This UE sends DCI, and wherein the CIF in this DCI is scheduled in this carrier wave set for indicating Carrier wave.

In a kind of preferred implementation, device 500 also includes: group particular offset determines unit 540, Each carrier wave set in the multiple carrier wave set by being divided determines for this carrier wave set The group particular offset of PUCCH, and wherein this group particular offset is also sent out by transmitting element 530 Give this UE.

In one implementation, by RRC signaling by the index of carrier wave set divided and carrier wave Between incidence relation notify to this UE.

In one implementation, device 500 also includes: for each carrier wave in the plurality of carrier wave set Distribution sole carrier index in corresponding carrier wave set.

Fig. 6 shows that the one according to embodiment of the present invention is for receiving for greatly in UE The block diagram of the device 600 of the downlink control signaling of scale carrier aggregation.Device 600 Can be realized or realize by UE 2 in UE 2.

As shown in Figure 6, device 600 includes: first receives unit 610, for from this The serving BS of UE receives the incidence relation between index and the carrier wave of multiple carrier wave set, wherein The plurality of carrier wave set is by being grouped the multiple carrier waves carrying out extensive carrier aggregation Obtain；And second receive unit 620, for from this serving BS by the plurality of carrier wave PDCCH reception DCI in group, wherein the CIF in this DCI is used for indicating in this carrier wave set The carrier wave being scheduled.

In a kind of preferred implementation, device 600 also includes: the 3rd receives unit 630, is used for Receive specific partially for the group of each carrier wave set the plurality of carrier wave set from this serving BS Move；And determine unit 640, it is used for determining that each carrier wave set is for feeding back ACK/NACK PUCCH resource.

In one implementation, for FDD system, determine that unit 640 is according to equation below Determine this carrier wave set PUCCH resource ():

$n_{\mathrm{PUCCH}}^{(1,\tilde{p})}=n_{\mathrm{CCE}}+N_{\mathrm{PUCCH}}^{\left(1\right)}+{\mathrm{\Δ}}_{\mathrm{group}}^i,$

Wherein, n_CCEIt is the numbering for transmitting the CCE that the DCI of correspondence distributes,Configured by high-level signaling by this serving BS,It is for the plurality of carrier wave set In i-th carrier wave set for the group particular offset of PUCCH of feeding back ACK/NACK, p Instruction index is the antenna port of p.

In another implementation, for FDD system, determine that unit 640 is according to following public affairs Formula determine in this carrier wave set for feeding back ACK/NACK PUCCH resource ():

If for each carrier wave set, EPDCCH-PRB-set q is arranged to distribution Formula transmit, then in this carrier wave set for feeding back ACK/NACK PUCCH resource () For:

$n_{\mathrm{PUCCH},j}^{\left(1\right)}=n_{\mathrm{CCE},q}+{\mathrm{\Δ}}_{\mathrm{ARO}}{N}_{\mathrm{PUCCH},q}^{\left(\mathrm{el}\right)}+{\mathrm{\Δ}}_{\mathrm{group}}^i;$

If for each carrier wave set, EPDCCH-PRB-set q is arranged to concentrate Formula transmit, then in this carrier wave set for feeding back ACK/NACK PUCCH resource () For:

Wherein, n_{ECCE, q}It is right for transmit in EPDCCH-PRB-set q in this carrier wave set The numbering of the first enhancing CCE (ECCE) of the DCI distribution answered, Δ_AROFor in this carrier wave set The HARQ ACK resource offset field in DCI format according to corresponding EPDCCH is true Fixed, for EPDCCH-PRB-set q'sBy higher level parameters Pucch-ResourceStartOffset-rll configures, for EPDCCH-PRB-setq'sBy Standard 3GPP TS 36.211 specifies, and n ' is by the antenna used in EPDCCH localized transmission Port determines, j is and HARQ-ACK Channel assignment (HARQ-ACK channel selection) Relevant parameter, its value is 0≤j≤A-1, A ∈ { 2,3,4}.

Above-mentioned in FDD system for EPDCCH PUCCH resource distribute, its for The thought of the PUCCH resource distribution introducing carrier wave set certain bias in each carrier wave set is same It is applicable to TDD system.I.e.: in a tdd system, for each carrier wave set, PUCCH The distribution method of resource is for adding one on the basis of distributing in existing PUCCH resource The specific side-play amount of carrier wave set.The particular offset of each carrier wave set can be different.

Such as, a kind of in the realization of TDD system, determine that unit 640 is according to following Formula determine the PUCCH resource for feeding back ACK/NACK of described each carrier wave set ():

$n_{\mathrm{PUCCH}}^{(1,\tilde{p})}={\mathrm{\Δ}}_c+n_{\mathrm{CCE}}+N_{\mathrm{PUCCH}}^{\left(1\right)}+{\mathrm{\Δ}}_{\mathrm{group}}^i,$

Wherein, Δ_cIt is the parameter relevant to TDD uplink/downlink sub-frame configuration, n_CCEBe for The numbering of the oneth CCE of the DCI distribution that transmission is corresponding,By base station in SIB message Middle configuration,The group being the PUCCH of i-th carrier wave set in multiple carrier wave set is special Fixed skew, p instruction index is the antenna port of p.

Utilize the present invention, it is possible to dispatch a large amount of carrier wave neatly, and also PUCCH can be avoided Resource contention.Compared with the scheme that other are possible, Current standards is only produced the least by the present invention Impact, therefore, the present invention can be readily applied in extensive CA system.

In this article, referring to the drawings method disclosed herein is described.But should Understanding, sequence of steps shown in accompanying drawing and described in this description is only schematically , without departing from the scope of the claims, these method steps and/or action can It is not limited to perform in a different order in shown in accompanying drawing and description be retouched The particular order stated.

In one or more exemplary design, can use hardware, software, firmware or they Combination in any realize function described herein.If realized with software, the most permissible Described function is stored on a computer-readable medium as one or more instructions or code, Or transmit as the one or more instructions on computer-readable medium or code.Calculate Machine computer-readable recording medium includes computer-readable storage medium and communication media, and wherein communication media includes Help computer program and be delivered to the arbitrary medium of another place from a place.Storage is situated between Matter can be the addressable any usable medium of universal or special computer.This computer can Read medium and can include, for example, but not limited to, RAM, ROM, EEPROM, CD-ROM Or other optical disc memory apparatus, disk storage equipment or other magnetic storage apparatus, or available In with universal or special computer or the addressable instruction of universal or special processor or data Other medium any of desired code modules is carried or stored to the form of structure.And And, arbitrarily connect computer-readable medium of can also being known as.Such as, if software is Use coaxial cable, optical fiber cable, twisted-pair feeder, Digital Subscriber Line (DSL) or the most infrared The wireless technology of line, radio and microwave etc is come from website, server or other remote source Transmission, then coaxial cable, optical fiber cable, twisted-pair feeder, DSL or such as infrared ray, The wireless technology of radio and microwave etc is also included within the definition of medium.

General processor, digital signal processor (DSP), special IC can be used (ASIC), field programmable gate array (FPGA) or other PLD, point Found door or transistor logic, discrete hardware components or be used for performing function as herein described Combination in any realize or perform combining various exemplary logical block described in the invention, Module and circuit.General processor can be microprocessor, or, processor can also be Any common processor, controller, microcontroller or state machine.Processor can also It is embodied as the combination of calculating equipment, such as, DSP and the combination of microprocessor, multiple micro-place Reason device, one or more microprocessor and the combination of DSP core, or other this kind any Structure.

Those of ordinary skill in the art it is also understood that and combine what embodiments herein described Various exemplary logical blocks, module, circuit and algorithm steps can be implemented as electronic hardware, Computer software or combination.This in order to clearly show that between hardware and software Interchangeability, all encloses various exemplary parts, block, module, circuit and step above General description has been carried out around its function.It is implemented as hardware as this function still to realize Become software, depend on specifically applying and apply design constraint over the whole system. Those skilled in the art can realize described for every kind of application-specific in the way of flexible Function, but, this realize decision-making and should not be interpreted as causing a departure from the scope of this disclosure.

The above description of the present invention is for making any those of ordinary skill of this area be capable of Or the use present invention.To those skilled in the art, the various amendments of the present invention Will be apparent from, and general principle defined herein can also be without departing from this Other deformation it is applied in the case of bright spirit and scope.Therefore, the present invention is not Be limited to example as herein described and design, but with principle disclosed herein and novel features The widest scope consistent.

Claims (18)

1. one kind is used for transmitting the downlink control for extensive carrier aggregation in a base station The method of signaling, including:

The multiple carrier waves carrying out extensive carrier aggregation for a UE are divided into multiple Carrier wave set；

Incidence relation between index and the carrier wave of the carrier wave set divided is notified to described UE；And

DCI, Qi Zhongsuo is sent to described UE by the PDCCH in the plurality of carrier wave set State the CIF in DCI for indicating the carrier wave being scheduled in this carrier wave set.

2. the method for claim 1, also includes:

Determine for this carrier wave set by each carrier wave set in multiple carrier wave set of being divided The group particular offset of PUCCH；And

This group particular offset is sent to described UE.

3. the method for claim 1, the load that wherein will be divided by RRC signaling Incidence relation between index and the carrier wave of ripple group notifies to described UE.

4. the method for claim 1, also includes:

Unique in corresponding carrier wave set is distributed for each carrier wave in the plurality of carrier wave set Carrier index.

5. one kind is used for receiving the downlink control for extensive carrier aggregation in UE The method of signaling, including:

The association between index and the carrier wave of multiple carrier wave set is received from the serving BS of described UE Relation, wherein said multiple carrier wave set are by to carry out the multiple of extensive carrier aggregation Carrier wave carries out being grouped and obtains；And

From described serving BS by PDCCH reception DCI the plurality of carrier wave set, its In CIF in this DCI for indicating the carrier wave being scheduled in this carrier wave set.

6. method as claimed in claim 5, also includes:

The group for each carrier wave set the plurality of carrier wave set is received from described serving BS Particular offset；And

Based on described group of particular offset determine each carrier wave set for feeding back ACK/NACK's PUCCH resource.

7. method as claimed in claim 6, wherein for FDD system, according to following Formula determines the PUCCH resource for feeding back ACK/NACK of described each carrier wave set

$n_{\mathrm{PUCCH}}^{(1,\tilde{p})}=n_{\mathrm{CCE}}+N_{\mathrm{PUCCH}}^{\left(1\right)}+{\mathrm{\Δ}}_{\mathrm{group}}^i,$

Wherein, n_CCEIt is the numbering for transmitting the CCE that the DCI of correspondence distributes,Configured by high-level signaling by described serving BS,It is for the plurality of load The group particular offset of the PUCCH of the i-th carrier wave set in ripple group, p marker antenna port p.

8. method as claimed in claim 6, wherein for FDD system, according to following Formula determines the PUCCH resource for feeding back ACK/NACK of described each carrier wave set

If EPDCCH-PRB-set q is arranged to distributed transmission, then

$n_{\mathrm{PUCCH},j}^{\left(1\right)}=n_{\mathrm{ECCE},q}+{\mathrm{\Δ}}_{\mathrm{ARO}}+N_{\mathrm{PUCCH},q}^{\left(\mathrm{el}\right)}+{\mathrm{\Δ}}_{\mathrm{group}}^i;$

If EPDCCH-PRB-set q is arranged to localized transmission, then

Wherein, n_{ECCE, q}It is to divide for the corresponding DCI transmitting in EPDCCH-PRB-set q The numbering of the first enhancing CCE (ECCE) joined, Δ_AROAccording to corresponding EPDCCH's HARQ ACK resource offset field in DCI format determines, for EPDCCH-PRB-set Q'sConfigured by higher level parameters pucch-ResourceStartOffset-r11,It is to use The group particular offset of the PUCCH of the i-th carrier wave set in the plurality of carrier wave set, for EPDCCH-PRB-set q'sSpecified by standard 3GPP TS 36.211, n ' by Antenna port used in EPDCCH localized transmission determines, j is to believe with HARQ-ACK Road selects relevant parameter, and its value is 0≤j≤A-1, A ∈ { 2,3,4}.

9. method as claimed in claim 6, wherein for TDD system, according to following Formula determines the PUCCH resource for feeding back ACK/NACK of described each carrier wave set

$n_{\mathrm{PUCCH}}^{(1,\tilde{p})}={\mathrm{\Δ}}_c+n_{\mathrm{CCE}}+N_{\mathrm{PUCCH}}^{\left(1\right)}+{\mathrm{\Δ}}_{\mathrm{group}}^i,$

Wherein, Δ_cIt is the parameter relevant to TDD uplink/downlink sub-frame configuration, n_CCEBe for The numbering of the oneth CCE of the DCI distribution that transmission is corresponding,By base station in SIB message Middle configuration,It is the PUCCH of i-th carrier wave set in the plurality of carrier wave set Group particular offset, p instruction index is the antenna port of p.

10. one kind is used for transmitting the downlink control for extensive carrier aggregation in a base station The device of signaling, including:

Grouped element, for carrying out the multiple of extensive carrier aggregation for a UE Carrier wave is divided into multiple carrier wave set；

Notification unit, for by the incidence relation between index and the carrier wave of the carrier wave set divided Notice is to described UE；And

Transmitting element, for sending out to described UE by the PDCCH in the plurality of carrier wave set Send DCI, the CIF in wherein said DCI for indicating the carrier wave being scheduled in this carrier wave set.

11. devices as claimed in claim 10, also include:

Group particular offset determines unit, each carrier wave in the multiple carrier wave set by being divided Group determines the group particular offset of the PUCCH for this carrier wave set, and

Described group of particular offset is also sent to described UE by wherein said transmitting element.

12. devices as claimed in claim 10, wherein will be divided by RRC signaling Incidence relation between index and the carrier wave of carrier wave set notifies to described UE.

13. devices as claimed in claim 10, also include: in the plurality of carrier wave set Each carrier wave distribution in corresponding carrier wave set sole carrier index.

14. 1 kinds for receiving the downlink control for extensive carrier aggregation in UE The device of signaling, including:

First receives unit, for receiving the rope of multiple carrier wave set from the serving BS of described UE Drawing the incidence relation between carrier wave, wherein said multiple carrier wave set are by big to carry out Multiple carrier waves of scale carrier aggregation carry out being grouped and obtain；And

Second receives unit, is used for from described serving BS by the plurality of carrier wave set PDCCH reception DCI, wherein the CIF in this DCI is used for indicating in this carrier wave set and is scheduled Carrier wave.

15. devices as claimed in claim 14, also include:

3rd receives unit, for receiving for the plurality of carrier wave set from described serving BS The group particular offset of each carrier wave set；And

Determine unit, for determine each carrier wave set for feeding back ACK/NACK's PUCCH resource.

16. devices as claimed in claim 15, wherein for FDD system, described determine Unit be calculated according to the following equation each carrier wave set for feeding back ACK/NACK's PUCCH resource

$n_{\mathrm{PUCCH}}^{(1,\tilde{p})}=n_{\mathrm{CCE}}+N_{\mathrm{PUCCH}}^{\left(1\right)}+{\mathrm{\Δ}}_{\mathrm{group}}^i,$

Wherein, n_CCEIt is the numbering for transmitting the CCE that the DCI of correspondence distributes,Configured by high-level signaling by described serving BS,It is for the plurality of load I-th carrier wave set in ripple group is specific partially for the group of the PUCCH of feeding back ACK/NACK Moving, p instruction index is the antenna port of p.

17. devices as claimed in claim 15, wherein for FDD system, described determine Unit be calculated according to the following equation each carrier wave set for feeding back ACK/NACK's PUCCH resource

If EPDCCH-PRB-set q is arranged to distributed transmission, then

$n_{\mathrm{PUCCH},j}^{\left(1\right)}=n_{\mathrm{ECCE},q}+{\mathrm{\Δ}}_{\mathrm{ARO}}+N_{\mathrm{PUCCH},q}^{\left(\mathrm{el}\right)}+{\mathrm{\Δ}}_{\mathrm{group}}^i;$

If EPDCCH-PRB-set q is arranged to localized transmission, then

Wherein, n_{ECCE, q}It is to divide for the corresponding DCI transmitting in EPDCCH-PRB-set q The numbering of the first enhancing CCE (ECCE) joined, Δ_AROAccording to corresponding EPDCCH's HARQ ACK resource offset field in DCI format determines, for EPDCCH-PRB-set Q'sConfigured by higher level parameters pucch-ResourceStartOffset-r11,It is to use The group particular offset of the PUCCH of the i-th carrier wave set in the plurality of carrier wave set, for EPDCCH-PRB-set q'sSpecified by standard 3GPP TS 36.211, n ' by Antenna port used in EPDCCH localized transmission determines, j is to believe with HARQ-ACK Road selects the parameter that (HARQ-ACK channel selection) is relevant, and its value is 0≤j≤A-1, A ∈ { 2,3,4}.

18. devices as claimed in claim 15, wherein for TDD system, described determine Unit be calculated according to the following equation described each carrier wave set for feeding back ACK/NACK's PUCCH resource

$n_{\mathrm{PUCCH}}^{(1,\tilde{p})}={\mathrm{\Δ}}_c+n_{\mathrm{CCE}}+N_{\mathrm{PUCCH}}^{\left(1\right)}+{\mathrm{\Δ}}_{\mathrm{group}}^i,$

Wherein, Δ_cIt is the parameter relevant to TDD uplink/downlink sub-frame configuration, n_CCEBe for The numbering of the oneth CCE of the DCI distribution that transmission is corresponding,By base station in SIB message Middle configuration,It is the PUCCH of i-th carrier wave set in the plurality of carrier wave set Group particular offset, p instruction index is the antenna port of p.