CN106301702A - A kind of HARQ-ACK transmission method strengthening carrier aggregation system and equipment - Google Patents

A kind of HARQ-ACK transmission method strengthening carrier aggregation system and equipment Download PDF

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Publication number
CN106301702A
CN106301702A CN201510246241.9A CN201510246241A CN106301702A CN 106301702 A CN106301702 A CN 106301702A CN 201510246241 A CN201510246241 A CN 201510246241A CN 106301702 A CN106301702 A CN 106301702A
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harq
ack
pdcch
epdcch
dai
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付景兴
李迎阳
张世昌
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Beijing Samsung Telecom R&D Center
Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Priority to CN201510246241.9A priority Critical patent/CN106301702A/en
Priority to PCT/KR2016/005123 priority patent/WO2016182405A1/en
Publication of CN106301702A publication Critical patent/CN106301702A/en
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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
    • 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
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1806—Go-back-N protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1864—ARQ related signaling
    • 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
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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
    • H04L5/0078—Timing of allocation
    • H04L5/0082—Timing of allocation at predetermined intervals
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L2001/125—Arrangements for preventing errors in the return channel
    • 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
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing

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

Abstract

This application discloses a kind of HARQ-ACK transmission method strengthening carrier aggregation system, including: according to the descending sub frame scheduled in scheduled Serving cell and each dispatch service community, UE determines that it needs the HARQ-ACK feedback information sent at a sub-frame of uplink；The HARQ-ACK feedback information determined is sent to base station by UE.

Description

A kind of HARQ-ACK transmission method strengthening carrier aggregation system and equipment
Technical field
The present invention relates to wireless communication system, a kind of mixing strengthening carrier aggregation system weighs automatically Pass request-reply (Hybrid Automatic Repeat-Request Acknowledgement, HARQ-ACK) transmission Method and apparatus.
Background technology
Long Term Evolution (Long Term Evolution, LTE) system supports FDD (Frequency Division Duplex, FDD) and two kinds of duplex modes of time division duplex (Time Division Duplex, TDD).Fig. 1 is TDD The frame structure of system.The length of each radio frames is 10ms, and it is divided into the field of two a length of 5ms.Each Field comprises time slot and 3 special domain, i.e. descending pilot frequency time slot (Downlink Pilot Time of 8 a length of 0.5ms Slot, DwPTS), protection interval (Guard Period, GP) and uplink pilot time slot (Uplink Pilot Time Slot, UpPTS), the length sum of these 3 special domain is 1ms.Each subframe is made up of two continuous print time slots, i.e. kth Individual subframe comprises time slot 2k and time slot 2k+1.TDD system supports 7 kinds of different TDD upstream and downstreams configurations, such as table Shown in 1.In table 1, D represents descending sub frame, and U represents sub-frame of uplink, and S represents the above-mentioned spy comprising 3 special domain Different subframe.
The upstream and downstream configuration of table 1:LTE TDD
For TDD system, when descending number of sub-frames is more than sub-frame of uplink, in multiple descending sub frames under the physics of transmission Row shares channel (Physical Downlink Shared Channel, PDSCH) and descending semi-continuous scheduling Physical Downlink Control Channel (the Physical Downlink that (Semi-Persistent Scheduling, SPS) discharges Control Channel, PDCCH)/strengthen Physical Downlink Control Channel (Enhanced Physical Downlink Control Channel, EPDCCH) hybrid automatic repeat-request response (Hybrid Automatic Repeat-Request Acknowledgement, HARQ-ACK) transmit on a sub-frame of uplink, as shown in Figure 2.Up at one The descending sub frame number of HARQ-ACK, referred to as HARQ-ACK bundled window size is transmitted in subframe. HARQ-ACK binding window depends on corresponding to the HARQ timing relationship that UE feedback HARQ-ACK is obeyed TDD upstream and downstream configures, and represents the descending sub frame that be there is a need on a carrier wave at subframe n feedback HARQ-ACK, The subframe index of above-mentioned descending sub frame is n-ki, ki∈ K, dimension M wherein gathering K is referred to as binding the size of window. LTE standard configures the set K of corresponding HARQ timing relationship decision such as different TDD upstream and downstreams at present Shown in table 2.
The set K:{k that the different HARQ timing relationship of table 2 determines0,k1,…kM-1}
For FDD system, the descending sub frame number transmitting HARQ-ACK on a sub-frame of uplink is 1, i.e. HARQ-ACK bundled window a size of 1.
In order to improve the transfer rate of user, it is proposed that enhancing (LTE-A) system of LTE system.In LTE-A, Bigger bandwidth of operation, i.e. carrier wave is obtained poly-by the multiple member carriers of polymerization (CC, Component Carrier) Close (CA, Carrier Aggregation), constitute downlink and the up-link of communication system, thus support higher Transfer rate.Such as, in order to support the bandwidth of 100MHz, can be come by the CC of 5 20MHz of polymerization Arrive.Here, each CC is referred to as a Serving cell (Cell).To a UE, base station can be only fitted to multiple CC Middle work, one of them is main CC (PCC or Pcell), and other CC are referred to as auxiliary CC (SCC or Scell). In this CA system, the descending reference upstream and downstream configuration of a Serving cell is the transmission according to UE configuration The configuration of the Serving cell of HARQ-ACK and the configuration of this Serving cell determine.The configuration of Serving cell here Configure including FDD and various TDD upstream and downstream.Then, one is determined according to the configuration of descending reference upstream and downstream The HARQ-ACK bundled window of Serving cell and size thereof.
A kind of mode of UE transmission HARQ-ACK feedback information is Physical Uplink Control Channel (Physical Uplink Control Channel, PUCCH) form 3, PUCCH format 3 at most can support 5 Serving cells, PUCCH Form 3 at most can transmit 22 bit informations, and this 22 bit potentially includes HARQ-ACK information bit, channel Status information (Channel State Information, CSI) bit and dispatch request (Scheduling Request, SR) bit.It is to be joined to UE by high-level signaling for transmitting the resource of the PUCCH format 3 of HARQ-ACK Put the resource of one group of PUCCH format 3, then by the HARQ-ACK in (e) PDCCH of scheduling PDSCH One group of PUCCH of resource instruction (HARQ-ACK Resource Indicator, ARI) dynamically instruction high-level signaling configuration The resource transmission HARQ-ACK information of a PUCCH format 3 in form 3 resource.Wherein ARI is to pass through Reinterpret transmitting power control (Transmission Power Control, TPC) territory to carry out, including scheduling Downlink distribution instruction (the Downlink Downlink of the TPC and scheduling Pcell of (e) PDCCH of Scell Assignment Indicator, DL DAI) the TPC territory that is not equal in (e) PDCCH of 1.Concrete instruction is such as Shown in table 3.
Table 3:PUCCH form 3 resource indicates
In existing CA system, if UE is configured with PUCCH format 3 and transmits HARQ-ACK information, and The total number of bits of HARQ-ACK information and/or cycle CSI information and/or SR is less than 22 bits, utilizes PUCCH Transmit HARQ-ACK information and/or cycle CSI information and/or SR；If HARQ-ACK information and/or cycle HARQ-ACK, more than 22 bits, is space binding (Spatial by the total number of bits of CSI information and/or SR Bundling), if through the HARQ-ACK information of space binding and/or cycle CSI information and/or the bit of SR Sum, less than 22 bits, transmits HARQ-ACK information and/or cycle CSI still with PUCCH format 3 Information and/or SR；If through the HARQ-ACK information of space binding and/or cycle CSI information and/or SR Total number of bits is still above 22 bits, and UE only transmits HARQ-ACK information and/or SR, and not transmission cycle CSI Information.
In the case of UE is configured with multiple Serving cell, PUCCH format 3 is utilized to transmit the side of HARQ-ACK Method is, transmission mode and HARQ-ACK bundled window size thereof according to each Serving cell configured are carried out HARQ-ACK transmits.If the transmission mode of Serving cell configuration is SIMO, or the biography of Serving cell configuration Defeated pattern is MIMO and when carrying out space binding, the corresponding transmission block of descending sub frame, transmission HARQ-ACK is 1 bit, configures according to the descending reference upstream and downstream of this Serving cell and determines Serving cell HARQ-ACK bundled window a size of M, the HARQ-ACK of this serving cell transmission are M-bit；If clothes When the transmission mode of business cell configuration is MIMO, corresponding two transmission blocks of descending sub frame, transmission HARQ-ACK is 2 bits, configures according to the descending reference upstream and downstream of this Serving cell and determines Serving cell HARQ-ACK bundled window a size of M, the HARQ-ACK of this serving cell transmission are 2*M bit.Then According to the index size of Serving cell, order arranges the HARQ-ACK information bit of each Serving cell from small to large, For each Serving cell, according to the HARQ-ACK of the DL DAI different descending sub frame of order arrangement from small to large Information bit, and the HARQ-ACK information bit of the PDSCH of semi-continuous scheduling (SPS) descending sub frame is arranged in The HARQ-ACK information bit of this Serving cell last.Such as, the transmission mode of Serving cell c is MIMO And not carrying out space binding, the descending reference upstream and downstream configuration of Serving cell c is TDD configuration 2, HARQ-ACK Bundled window a size of 4, descending sub frame n-kmHARQ-ACK feedback information sub-frame of uplink n transmit, kmBag Include { k1,k2,k3,k4, the HARQ-ACK feedback information of Serving cell c is 8 bits, is designated as {a0,a1,a2,a3,a4,a5,a6,a7, descending sub frame kmThe feedback information bits of HARQ-ACK be: {a2DAI(km)-2,a2DAI(km)-1, wherein DAI (km) it is descending sub frame kmIn (e) PDCCH of scheduling PDSCH The value in the DAI territory in DCI information, has been used to refer in HARQ-ACK bundled window to current downlink subframe (e) PDCCH number of scheduled PDSCH and (e) PDCCH number sum of indicating downlink SPS release.
In order to make full use of frequency spectrum resource widely further, including exempting from the frequency spectrum resource of licensed band, one UE can be polymerized the carrier aggregation system more than 5 CC, thus obtains bigger bandwidth of operation, and such as, polymerization is many Reach the carrier aggregation system of 32 Serving cells.
Owing to the number of the Serving cell of UE configuration is at maximum up to 32, the bit number of HARQ-ACK is much larger than 22 Bit, has had to research and propose and to have introduced a kind of new PUCCH format to carry HARQ-ACK bit, New PUCCH format is referred to as PUCCH format X in this application, and PUCCH format X maximum can carry N' Bit, such as, N' is equal to 64 bits or 128 bits.
Summary of the invention
The application provides a kind of HARQ-ACK transmission method strengthening carrier aggregation system and equipment, is adjusted according to UE Descending sub frame scheduled in the Serving cell of degree and each dispatch service community determines that it needs to send out at a sub-frame of uplink The HARQ-ACK feedback information sent, and HARQ-ACK feedback information is sent to base station.
For achieving the above object, the application adopts the following technical scheme that:
A kind of HARQ-ACK transmission method strengthening carrier aggregation system, including:
According to the descending sub frame scheduled in scheduled Serving cell and each dispatch service community, UE determines that it is one Individual sub-frame of uplink needs the HARQ-ACK feedback information sent；
The HARQ-ACK feedback information determined is sent to eNB by UE.
Determine that described HARQ-ACK feedback information includes it is preferred that described:
Described UE releases according to the PDCCH/EPDCCH and indicating downlink SPS at Serving cell scheduling PDSCH The value of the zonule DL DAI set in the DL DCI of the PDCCH/EPDCCH put, determines described up Subframe needs the bit number of the HARQ-ACK feedback information sent；
Wherein, the value of described zonule DL DAI is used for indicating to the Serving cell at this DL DAI place, and one The PDCCH/EPDCCH sum sent in individual descending sub frame or the transmission block sum of scheduling.
Determine that described HARQ-ACK feedback information includes it is preferred that described:
Described UE releases according to the PDCCH/EPDCCH and indicating downlink SPS at Serving cell scheduling PDSCH The zonule set in the DL DCI of the PDCCH/EPDCCH put and the value of time domain combined DL DAI, determine The bit number of the HARQ-ACK feedback information sent is needed at described sub-frame of uplink；
Wherein, the value of described zonule and time domain combined DL DAI is for the descending son of instruction to this DL DAI place Till frame, the PDCCH/EPDCCH sum sent in time-frequency binding window or the transmission block sum of scheduling；Described time-frequency Binding window is all descending son on all carrier waves of described UE in same sub-frame of uplink feedback HARQ-ACK information The set of frame composition.
It is preferred that when determining the bit number of described HARQ-ACK feedback information, further according at Serving cell The DL of the PDCCH/EPDCCH of PDCCH/EPDCCH and the indicating downlink SPS release of scheduling PDSCH The value of the reverse DL DAI set in DCI or the value of reference DL DAI are carried out；
The value of described reverse DL DAI is, the Serving cell at this DL DAI place institute in the descending sub frame at its place There is sequence number when arranging according to the order that call number is descending in Serving cell, lose in being used for finding descending sub frame That loses is positioned at last PDCCH/EPDCCH；The described value with reference to DL DAI is used for indicating this DL DAI place Descending sub frame computed HARQ-ACK time scheduling PDSCH PDCCH/EPDCCH and indicating downlink SPS The sum of the PDCCH/EPDCCH of release or the sum of corresponding transmission block, the position lost in finding descending sub frame In last PDCCH/EPDCCH.
It is preferred that when determining the bit number of described HARQ-ACK feedback information, further according at Serving cell The DL of the PDCCH/EPDCCH of PDCCH/EPDCCH and the indicating downlink SPS release of scheduling PDSCH The value of the reverse DL DAI set in DCI or the value of reference DL DAI are carried out；
Wherein, the value of described reverse DL DAI is, the Serving cell at this DL DAI place time-frequency at its place is tied up Sequence number when arranging according to the order that call number is descending in all Serving cells in determining window, is used for finding time-frequency That loses in binding window is positioned at last PDCCH/EPDCCH；The described value with reference to DL DAI is used for indicating this DL DAI place time-frequency binding window computed HARQ-ACK time scheduling PDSCH PDCCH/EPDCCH and The sum of the PDCCH/EPDCCH of indicating downlink SPS release or the sum of corresponding transmission block, be used for finding that time-frequency is tied up That loses in determining window is positioned at last PDCCH/EPDCCH.
If it is preferred that the transmission mode of all Serving cells of UE configuration is all SIMO, or, all it is configured to The HARQ-ACK of the Serving cell of MIMO transmission pattern carries out space binding, the most described determines HARQ-ACK Feedback information bits number isWherein,For calculating in time-frequency binding window PDCCH/EPDCCH and the indicating downlink SPS release of PDSCH is dispatched during HARQ-ACK The number of PDCCH/EPDCCH, L is that UE detects in time-frequency binding window and joins according to described zonule and time domain Close PDCCH/EPDCCH and the indicating downlink SPS release of the scheduling PDSCH that DL DAI dopes The number of PDCCH/EPDCCH, q is zonule and the bit number of time domain combined DL DAI, and zonule and time domain The bit number of associating DL DAI is identical with the bit number with reference to DL DAI；
If existence is configured to MIMO and HARQ-ACK and does not carries out the biography of space binding in the Serving cell of UE configuration Defeated pattern, described determines that HARQ-ACK feedback information bit number is For the transmission block sum dispatched during computed HARQ-ACK in time-frequency binding window, L' is that UE binds window at time-frequency The transmission block sum of the scheduling inside detected and dope according to described zonule and time domain combined DL DAI.
It is preferred that the method farther includes: to each descending sub frame, when the HARQ-ACK bit number determined When being less than the minimum HARQ-ACK bit number of this subframe set, by the HARQ-ACK bit number correction of this subframe For described minimum HARQ-ACK bit number.
It is preferred that after described UE sends HARQ-ACK feedback information, the method farther includes: eNB The bit number of the HARQ-ACK feedback information of the actual transmission of described UE is determined by blind check.
It is preferred that when the transmission mode of all Serving cells of UE configuration is all SIMO, or, all it is configured to When the HARQ-ACK of the Serving cell of MIMO transmission pattern carries out space binding, the blinded fashion of described eNB Including: it is respectively L', L'-1 ..., L'-i ..., L'-S+1 according to HARQ-ACK feedback information bit number successively Carry out blind check, in a blind check in office, if HARQ-ACK being detected, stopping blind check, determining that described UE sends The bit number of HARQ-ACK feedback information be HARQ-ACK feedback information bit number corresponding to this blind check, if Being not detected by HARQ-ACK and then continue blind check next time, then stopping until completing S blind check；
Wherein, described L' is the bit number of the HARQ-ACK feedback information that eNB determines, S be the blind check set Big number of times.
It is preferred that be configured to MIMO and HARQ-ACK do not carry out space when the Serving cell of UE configuration exist During the transmission mode bound, the blinded fashion of described eNB includes: successively according to HARQ-ACK feedback information bit Number is respectively L', L'-r1、…、L'-ri、…、L'-rS-1Carry out blind check, in a blind check in office, if HARQ-ACK being detected Then stop blind check, determine that the bit number of the HARQ-ACK feedback information that described UE sends is that this blind check is corresponding HARQ-ACK feedback information bit number, if being not detected by HARQ-ACK, continues blind check next time, until completing S blind check then stops；
Wherein, described L' is the bit number of the HARQ-ACK feedback information that eNB determines, S be the blind check set Big number of times, riPDCCH/EODCCH and the indicating downlink SPS release of PDSCH is dispatched for eNB The i-th scheduling PDCCH/EPDCCH of PDSCH from back to front or indicating downlink in PDCCH/EPDCCH The HARQ-ACK feedback information bit number of the PDCCH/EPDCCH of SPS release.
A kind of HARQ-ACK transmission equipment strengthening carrier aggregation system, including: feedback information determines unit and sends out Send unit；
Described feedback information determines unit, for being adjusted according to scheduled Serving cell and each dispatch service community The descending sub frame of degree determines that it needs the HARQ-ACK feedback information sent at a sub-frame of uplink；
Described transmitting element, for being sent to eNB by the HARQ-ACK feedback information determined.
As seen from the above technical solution, in the application, UE is little according to scheduled Serving cell and each dispatch service Descending sub frame scheduled in district determines that it needs the HARQ-ACK feedback information sent at a sub-frame of uplink；UE will The HARQ-ACK feedback information determined is sent to base station.Employing the method can be according to the Serving cell of actual schedule And the descending sub frame of each dispatch service community actual schedule determines HARQ-ACK feedback information bit number, permissible Save PUCCH resource and improve the performance of PUCCH transmission.
Accompanying drawing explanation
Fig. 1 is LTE tdd frame structure；
Fig. 2 is the HARQ-ACK timing relationship of LTE TDD Serving cell；
Fig. 3 is the flow chart of the HARQ-ACK transmission method strengthening carrier aggregation system in the application；
Fig. 4 is the zonule simultaneous schematic diagram of DL DAI being newly introduced in time domain DL DAI and the application；
Fig. 5 is the zonule and the schematic diagram of time domain combined DL DAI introduced in the application；
Fig. 6 is the zonule DL DAI and the schematic diagram of reverse DL DAI introduced in the application；
Fig. 7 is the signal determining HARQ-ACK feedback information according to zonule DL DAI and reverse DL DAI Figure；
Fig. 8 is the zonule DL DAI introduced in the application and the schematic diagram with reference to DL DAI；
Fig. 9 is the signal determining HARQ-ACK feedback information according to zonule DL DAI and reference DL DAI Figure
When Figure 10 is to introduce zonule DL DAI in the application in descending sub frame (e) PDCCH quantity seldom and The situation schematic diagram lost；
Figure 11 is to introduce zonule DL DAI in the application and with reference to (e) PDCCH in descending sub frame during DL DAI Quantity is seldom and the situation schematic diagram lost；
Figure 12 is to introduce zonule and time domain combined DL DAI and the schematic diagram with reference to DL DAI in embodiment two；
Figure 13 is to determine reality by blind check after introducing zonule and time domain combined DL DAI in embodiment four The schematic diagram one of HARQ-ACK bit number；
Figure 14 is to determine reality by blind check after introducing zonule and time domain combined DL DAI in embodiment four The schematic diagram two of HARQ-ACK bit number；
Figure 15 is to introduce zonule and time domain combined DL DAI and the schematic diagram with reference to DL DAI in embodiment three One；
Figure 16 is to introduce zonule and time domain combined DL DAI and the schematic diagram with reference to DL DAI in embodiment three Two；
Figure 17 is to introduce zonule and time domain combined DL DAI and the schematic diagram with reference to DL DAI in embodiment three Three；
Figure 18 is the basic structure signal of the HARQ-ACK transmission equipment strengthening carrier aggregation system in the application Figure.
Detailed description of the invention
In order to make the purpose of the application, technological means and advantage clearer, below in conjunction with accompanying drawing to this Shen Please be described in further details.
The flow chart of the HARQ-ACK transmission method strengthening carrier aggregation system that Fig. 3 provides for the present invention, its Concretely comprise the following steps:
Step 301:UE according to scheduled Serving cell and on each dispatch service community scheduled under Row subframe, determines that UE needs the HARQ-ACK feedback information sent at a sub-frame of uplink.
Here, UE is according to scheduling in the Serving cell number of actual schedule and the Serving cell of actual schedule Descending sub frame situation, determines the bit number of actual transmission HARQ-ACK feedback information.
The HARQ-ACK feedback information determined is sent to base station by step 302:UE.
For in step 301, according in the Serving cell number of actual schedule and the Serving cell of actual schedule The descending sub frame situation of scheduling, determines the bit number of actual transmission HARQ-ACK feedback information.Determining this ratio During special number, for ensureing that base station and UE send the reason of the bit number of HARQ-ACK feedback information to reality Solving consistent, the application introduces the pledge system that following two is basic:
One, descending reference upstream and downstream is configured to the Serving cell of TDD configuration, in order to determine at multiple clothes The dispatch situation of business community, at PDCCH/EPDCCH and the indicating downlink of Serving cell scheduling PDSCH The DL DCI of the PDCCH/EPDCCH of SPS release is newly introduced the DL DAI (DL of zonule of zonule DAI includes q bit, and q is positive integer, such as, q=2 or 3 bits), it is used for representing up till now till community, Have sent altogether how many PDCCH/EPDCCH in one descending sub frame or scheduled how many transmission blocks (Transmission Block, TB), the DL DAI of time domain can still exist simultaneously, or only community The DL DAI in territory, does not has the DL DAI of time domain, if there being the DL DAI of time domain, the DL DAI of zonule and The DL DAI of time domain is independent calculating, as shown in Figure 4.For the value of zonule DL DAI, due to q The restriction of value, the value of zonule DL DAI should be PDCCH/EPDCCH number or the scheduling of actual transmission Transmission block number to 2qThe result of delivery.
Two or Serving cell scheduling PDSCH PDCCH/EPDCCH and indicating downlink SPS release PDCCH/EPDCCH DL DCI in introduce zonule and time domain combined DL DAI (zonule and time domain Associating DL DAI includes q bit, and q is a positive integer, such as, q=2 or 3 bits), it is used for representing The PDCCH/EPDCCH of PDCCH/EPDCCH and the indicating downlink SPS release of scheduling PDSCH is Only, have sent altogether how many PDCCH/EPDCCH or scheduled how many transmission blocks in time-frequency binding window (Transmission Block, TB), as shown in Figure 5.Time-frequency binding window is to be needed by the carrier wave of UE The set of all descending sub frames composition of sub-frame of uplink n feedback HARQ-ACK, time-frequency binds any one in window Carrier index c at descending sub frame place meets 0≤c ＜ Nc (carrier index starts counting up) from 0, its subframe sequence Number it is n-kc, wherein kc∈ Kc, Kc are by UE descending sub frame in feedback carrier c on sub-frame of uplink n The HARQ timing relationship that HARQ-ACK uses determines, if certain configuration of TDD, then Kc is table 2 In set corresponding to corresponding TDD configuration, Nc is the UE descending clothes at sub-frame of uplink n feedback HARQ-ACK Business community sum.All descending sub frames in time-frequency binding window are according to setting rule compositor, UE and eNB is to this Sequence has identical understanding.Preferably, for any one descending sub frame in time-frequency binding window, tie up at time-frequency It is ranked up, as shown in Figure 5 according to the order of time domain after first frequency domain in determining window.With above-mentioned zonule DL DAI Value in the same manner, for zonule and the value of time domain combined DL DAI, due to the restriction of q value, community The value of territory and time domain combined DL DAI should be PDCCH/EPDCCH number or the transmission of scheduling of actual transmission Block number is to 2qThe result of delivery.
It addition, it is only little with the service of UE configuration at the bit number of the HARQ-ACK of PUCCH format 3 transmission at present District's number, transmission mode and the bundled window size of the Serving cell of each configuration are relevant.And according to above two Basic guarantee mechanism, the HARQ-ACK information of each Serving cell according to DL DAI from small to large order row Row.Here in PUCCH format 3 and new PUCCH format X, the bit number of the HARQ-ACK of transmission is wanted Along with the descending sub frame of the community number being scheduled and each cell scheduling determines, by above two basic guarantee Mechanism, can identify PDSCH and the instruction of scheduling in a descending sub frame or a time-frequency binding window (e) PDCCH of the portion lost in each (e) PDCCH of SPS release, this portion is to remove Other positions outside last several positions in descending sub frame or time-frequency binding window.But, owing to UE can missing inspection eNB The most several (e) PDCCH of scheduling, therefore (e) PDCCH number of scheduling is understood still by UE and eNB May be different, the bit number understanding to HARQ-ACK is likely to different, it is therefore preferred that can enter One step introduces new reverse DL DAI or with reference to DL DAI (reverse DL DAI or the bit with reference to DL DAI Number is positive integer for q', q', such as q'=2 or 3 bits), for finding the subframe lost, so that UE and eNB As the bit number understanding of HARQ-ACK.
Such as, multiple FDD Serving cells that configurating downlink is configured with reference to upstream and downstream, and the service of configuration Community be SIMO transmission mode or be configured to MIMO transmission pattern but have passed through space binding, little in above-mentioned service Dispatch PDSCH's till district utilizes zonule DL DAI instruction (e) PDCCH up till now The number of the PDCCH/EPDCCH of PDCCH/EPDCCH and indicating downlink SPS release.And reverse DL DAI's is to index the sequence number of each Serving cell when order from big to small arranges, such as Fig. 6 institute according to Serving cell Show.If so (e) PDCCH of last Serving cell loses, UE receives (e) of reverse DL DAI=2 PDCCH, and UE is not received (e) PDCCH of reverse DL DAI=1, UE and is judged by reverse DL DAI Later (e) PDCCH loses, and therefore, the bit number of HARQ-ACK is 4 bits, as it is shown in fig. 7, root The PDCCH/EPDCCH discharged according to the PDSCH or indicating downlink SPS of DL DAI=1 produces 1 bit HARQ-ACK, produces according to the PDCCH/EPDCCH that the PDSCH or indicating downlink SPS of DL DAI=2 discharge Raw 1 bit HARQ-ACK, discharges according to the PDSCH or indicating downlink SPS of DL DAI=3 PDCCH/EPDCCH produces 1 bit HARQ-ACK, adds 1 bit HARQ-ACK the most again, this bit HARQ-ACK is NACK.
Or utilize the subframe finding loss with reference to DL DAI.With reference to DL DAI instruction be each descending sub frame or PDCCH/EPDCCH and the indicating downlink of PDSCH is dispatched during each time-frequency binding window computed HARQ-ACK The sum of the PDCCH/EPDCCH of SPS release, as shown in Figure 8.If so (e) of last Serving cell PDCCH loses, and UE receives (e) PDCCH with reference to DL DAI=4, and UE only receives 3 scheduling PDSCH PDCCH/EPDCCH and the PDCCH/EPDCCH, UE of indicating downlink SPS release by with reference to DL DAI judges that last (e) PDCCH loses, and therefore, the bit number of HARQ-ACK is 4 bits, such as Fig. 9 Shown in, produce 1 bit according to the PDCCH/EPDCCH that the PDSCH or indicating downlink SPS of DL DAI=1 discharge HARQ-ACK, produces according to the PDCCH/EPDCCH that the PDSCH or indicating downlink SPS of DL DAI=2 discharge Raw 1 bit HARQ-ACK, discharges according to the PDSCH or indicating downlink SPS of DL DAI=3 PDCCH/EPDCCH produces 1 bit HARQ-ACK, adds 1 bit HARQ-ACK the most again, this bit HARQ-ACK is NACK.Identically with the value of above-mentioned zonule DL DAI, for reverse DL DAI and ginseng Examining the value of DL DAI, due to the restriction of q' value, it is descending that the value of reverse DL DAI should be cell index Sequence number during sequence is to 2q'The result of delivery, the value of reference DL DAI should be in descending sub frame or time-frequency binding window PDCCH/EPDCCH sum is to 2q'The result of delivery.
Separately below according to the situation of different DL DAI design above, by several preferred embodiments, right The transmission technology scheme of HARQ-ACK is further elaborated.
Embodiment one
In this embodiment it is assumed that the descending reference upstream and downstream configuration of the Serving cell of UE configuration is that TDD joins Put, and introduce zonule DL DAI (the DL DAI of zonule includes q bit, and q is a positive integer, Such as, q is 2 or 3 bits) indicate up till now till community, have sent altogether how many in a descending sub frame PDCCH/EPDCCH or scheduled how many transmission blocks (Transmission Block, TB), with the most constantly The DL DAI in territory still exists, and the DL DAI of zonule and time domain DL DAI is independent, such as Fig. 4 institute Show.Then new reverse DL DAI is introduced or with reference to DL DAI (all clothes when configuration for each subframe The transmission mode of business community is SIMO, or all Serving cells being configured to MIMO transmission pattern are all carried out During the binding of space, reverse DL DAI or reference DL DAI is for Serving cell, when the service of configuration is little The transmission mode in district has plenty of SIMO, when having plenty of MIMO and do not carry out space binding, and reverse DL DAI Or with reference to DL DAI for transmission block), the reverse DL DAI or reference DL DAI of each subframe are Separate counts, so can ensure that whether UE has the scheduling PDSCH's that loses in knowing each subframe The PDCCH/EPDCCH of PDCCH/EPDCCH or indicating downlink SPS release, then according to behind first zonule The order arrangement HARQ-ACK information bit of time domain.As it was previously stated, by introducing above-mentioned zonule DL DAI It appeared that (e) PDCCH that in descending sub frame, other positions are lost in addition to rearmost position, by introducing reversely DL DAI or with reference to DL DAI it appeared that in descending sub frame rearmost position lose (e) PDCCH, so, UE can determine the HARQ-ACK bit number being actually needed feedback on sub-frame of uplink according to above-mentioned DL DAI, Thus carry out the feedback of HARQ-ACK according to this bit number, to save system resource.
But under above-mentioned processing mode, it is possible to there is following situation: dispatch PDSCH's in the descending sub frame having The number of the PDCCH/EPDCCH of PDCCH/EPDCCH or indicating downlink SPS release is little, such as, have Descending sub frame only one of which PDCCH/EPDCCH, and this PDCCH/EPDCCH is not detected by UE, At this moment discharge according to the PDCCH/EPDCCH or indicating downlink SPS of scheduling PDSCH The number of PDCCH/EPDCCH determines that the bit number of HARQ-ACK will produce UE and eNB pair HARQ-ACK bit number and the cause that understands differently put in order.And UE loses a PDCCH/EPDCCH Likelihood ratio bigger.As shown in Figure 10, scheduled a descending sub frame and UE is not detected by subframe 2. At this moment the HARQ-ACK of UE put in order for: the HARQ-ACK bit of subframe 1, subframe 3 HARQ-ACK bit, the HARQ-ACK bit of subframe 4 }, and eNB thinks the arrangement of HARQ-ACK Order is: and the HARQ-ACK bit of subframe 1, the HARQ-ACK bit of subframe 2, subframe 3 HARQ-ACK bit, the HARQ-ACK bit of subframe 4 }, such eNB and UE is to HARQ-ACK Bit number and the sample that understands differently that puts in order, arise that mistake.
HARQ-ACK is arranged suitable by the PDCCH/EPDCCH being not detected by eNB scheduling in order to reduce UE The impact of sequence, in order to determine the bit number of HARQ-ACK, it is preferable that to each descending sub frame, can be according to In the minimum PDCCH/EPDCCH number being scheduled or each subframe, the minimum transmission block number that is scheduled is M' arranges the minimum HARQ-ACK bit number of this subframe.That is, when actual schedule is more than M' The when of PDCCH/EPDCCH, calculate this subframe according to actual PDCCH/EPDCCH number HARQ-ACK bit number；When actual schedule is less than or equal to M' PDCCH/EPDCCH when, fixing Reserved M' bit.Because the dynamic dispatching of uncertain base station which community and downlink transfer pattern, Ke Yishi Fixing according to 2-TB transmission mode reserved bit.Or, when the transmission mode of all Serving cells of UE configuration It is all SIMO, or the HARQ-ACK of all Serving cells being configured to MIMO transmission pattern carries out sky Between binding time, the number of the PDCCH/EPDCCH of the minimum scheduling of each subframe be M'(such as, M'=4), UE and eNB is understood that, the bit number of the HARQ-ACK of the most each subframe be max{ according to The HARQ-ACK bit number that the PDCCH/EPDCCH that UE detects calculates, M'}, wherein max{} is The two takes maxima operation.Such as, as shown in figure 11, DL DAI is 2 bits, is 2 with reference to DL DAI Bit, detects five PDCCH/EPDCCH being scheduled first subframe UE, second subframe UE detects a PDCCH/EPDCCH being scheduled, and detects that two are scheduled the 3rd subframe UE PDCCH/EPDCCH, four PDCCH/EPDCCH being scheduled detected the 4th subframe UE, The HARQ-ACK bit number of such first subframe is max{5, and 4}=5, HARQ-ACK bit is: { O(0, 0), O(0,1), O(0,2), O(0,3), O(0,4)}。O(0, i)I+1 according to the 1st subframe detected The HARQ-ACK bit that the PDCCH/EPDCCH of individual PDSCH or indicating downlink SPS release determines.The The HARQ-ACK bit number of two subframes is max{1, and 4}=4, HARQ-ACK bit is: { O(1,0), O(1,1), O(1,2), O(1,3)}。O(1,0)The 1st PDSCH according to the 2nd subframe detected or refer to Show the HARQ-ACK bit that the PDCCH/EPDCCH that descending SPS discharges determines, O(1,1), O(1,2), O(1,3)It is NACK,Owing to only detecting a PDCCH/EPDCCH in this subframe UE。3rd son The HARQ-ACK bit number of frame is max{2, and 4}=3, HARQ-ACK bit is: { O(2,0), O(2,1), O(2,2), O(2,3)}。O(2,0)According to detect the 3rd subframe the 1st PDSCH or instruction under The HARQ-ACK bit that the PDCCH/EPDCCH of row SPS release determines, O(2,1)According to detected The PDCCH/EPDCCH of the 2nd PDSCH of 3 subframes or indicating downlink SPS release determines HARQ-ACK bit, O(2,2), O(2,3)For NACK,Owing to measuring two in this subframe UE quality inspection PDCCH/EPDCCH.The HARQ-ACK bit number of the 4th subframe is max{4,4}=4, HARQ-ACK Bit is: { O(3,0), O(3,1), O(3,2), O(3,3)}。O(3, i)According to the 4th subframe detected The HARQ-ACK ratio that the PDCCH/EPDCCH of i+1 PDSCH or indicating downlink SPS release determines Special.
Utilizing above method to ensure that in a descending sub frame, UE is only not detected by M' or M' Individual above PDCCH/EPDCCH just can make UE and eNB understand differently HARQ-ACK bit number cause, And the probability of the PDCCH/EPDCCH that UE is not detected by M' or more than M' is the lowest, therefore due to UE The situation that the PDCCH/EPDCCH number of PDCCH/EPDCCH with the eNB transmission detected is inconsistent is led Cause UE and eNB HARQ-ACK bit number is understood differently cause situation occur probability the lowest.
Embodiment two
In this embodiment it is believed that the descending reference upstream and downstream configuration of the Serving cell of UE configuration is that TDD joins Putting, (zonule and time domain combined DL DAI include q bit, q for introducing zonule and time domain combined DL DAI It is a positive integer, such as, q=2 or 3 bits), it is used for representing the PDCCH/EPDCCH of scheduling PDSCH And till the PDCCH/EPDCCH of indicating downlink SPS release, in time-frequency binding window, have sent how many altogether Individual PDCCH/EPDCCH or scheduled how many transmission blocks (Transmission Block, TB), time-frequency Any one descending sub frame in binding window, arranges according to the order of time domain after first frequency domain in time-frequency binds window Sequence, as shown in Figure 5.Then new reverse DL DAI is introduced or with reference to DL DAI for each time-frequency binding window (zonule and time domain combined reference DL DAI include q bit, and q is a positive integer, such as, q=2 or 3 Bit), so can ensure that whether UE has the scheduling PDSCH's that loses in knowing each time-frequency binding window The PDCCH/EPDCCH of PDCCH/EPDCCH or indicating downlink SPS release, then according to time after first frequency domain The order arrangement HARQ-ACK information bit in territory.As shown in figure 12, according to the reference DL DAI of time-frequency binding window (it is designated as) determine that time-frequency binds the HARQ-ACK information bit in window, when all clothes of UE configuration The transmission mode of business community is all SIMO, or all Serving cells being configured to MIMO transmission pattern When HARQ-ACK carries out space binding, the HARQ-ACK information bit in time-frequency binding window isWherein, L is the scheduling PDSCH that UE detects in time-frequency binding window PDCCH/EPDCCH and the number of PDCCH/EPDCCH of indicating downlink SPS release, L here Pass through to detect what the PDCCH/EPDCCH and indicating downlink SPS of scheduling PDSCH discharged including UE PDCCH/EPDCCH deduction knows on other positions in addition to last several positions in binding window lost The PDCCH/EPDCCH of PDCCH/EPDCCH and indicating downlink SPS release,It is Zonule in PDCCH/EPDCCH and the time domain combined value with reference to DL DAI territory,For upper floor operation. When the transmission mode of the Serving cell of UE configuration has plenty of SIMO, have plenty of and be configured to MIMO transmission pattern HARQ-ACK information ratio when Serving cell and HARQ-ACK do not carry out space binding, in time-frequency binding window Special number isWherein, L is the scheduling that UE detects in time-frequency binding window The number of transmission block,It is the zonule in PDCCH/EPDCCH and time domain combined reference DL DAI The value in territory,For upper floor operation.Wherein transmission block computational methods above are, if Serving cell configuration When transmission mode is SIMO or the Serving cell being configured to MIMO and HARQ-ACK carry out space binding, PDCCH/EPDCCH and the indicating downlink SPS release of the scheduling PDSCH that UE detects PDCCH/EPDCCH includes a transmission block, should have 1 bit HARQ-ACK information mutually, if servicing little When the Serving cell that transmission mode is MIMO of district's configuration and HARQ-ACK do not carry out space binding, UE examines PDCCH/EPDCCH and the indicating downlink SPS release of the scheduling PDSCH measured PDCCH/EPDCCH includes 2 transmission blocks, should have 2 bit HARQ-ACK information mutually.
Embodiment three
In this embodiment it is believed that the descending reference upstream and downstream configuration of the Serving cell of UE configuration is that TDD joins Putting, (zonule and time domain combined DL DAI include q bit, q for introducing zonule and time domain combined DL DAI It is a positive integer, such as, q=2 or 3 bits), it is used for representing the PDCCH/EPDCCH of scheduling PDSCH And till the PDCCH/EPDCCH of indicating downlink SPS release, in time-frequency binding window, have sent how many altogether Individual PDCCH/EPDCCH or scheduled how many transmission blocks (Transmission Block, TB), time-frequency Any one descending sub frame in binding window, arranges according to the order of time domain after first frequency domain in time-frequency binds window Sequence.New reverse DL DAI is introduced or with reference to DL DAI, each subframe anti-simultaneously for each subframe To DL DAI or with reference to DL DAI be separate counts, so can ensure that UE in knowing each subframe is The no PDCCH/EPDCCH or indicating downlink SPS having the scheduling PDSCH lost discharges PDCCH/EPDCCH, then according to the order arrangement HARQ-ACK information bit of time domain behind first zonule, As shown in figure 15.
HARQ-ACK is arranged suitable by the PDCCH/EPDCCH being not detected by eNB scheduling in order to reduce UE The impact of sequence, in order to determine the bit number of HARQ-ACK, with embodiment one analogously, to some descending son Frame, according to the transmission being scheduled minimum in the minimum PDCCH/EPDCCH number being scheduled or each subframe Block number is that M' is to arrange the minimum HARQ-ACK bit number of this subframe.That is, it is more than when actual schedule The when of M' PDCCH/EPDCCH, calculate this height according to actual PDCCH/EPDCCH number The HARQ-ACK bit number of frame；When actual schedule is less than or equal to M ' individual PDCCH/EPDCCH when, Fixing reserved M' bit.Because the dynamic dispatching of uncertain base station those communities and downlink transfer pattern thereof, can Being fixing according to 2-TB transmission mode reserved bit.So that it is determined that it is minimum in each descending sub frame The bit number of HARQ-ACK, these descending sub frames be scheduled in neither one descending sub frame below M' and PDCCH/EPDCCH that M' is above or scheduled M'(such as, M'=4) individual and M' above Transmission block, as shown in figure 16, in subframe 0 and subframe 2, the PDCCH/EPDCCH number of scheduling is no less than 4, When calculating the bit number of HARQ-ACK of subframe 0, subframe 1 and subframe 2, according to subframe 0, subframe 1 With the PDCCH/EPDCCH of actual schedule in subframe 2 or scheduled the transmission block of M' and calculate.And In subframe 3, the PDCCH/EPDCCH number of scheduling is less than 4, and in subframe 3 neither one descending sub frame below Scheduled M' and M' above PDCCH/EPDCCH or scheduled M' and M' above biography Defeated piece, therefore when calculating the bit number of HARQ-ACK of subframe 3, it is assumed that scheduled M' in subframe 3 PDCCH/EPDCCH or scheduled the transmission block of M'.Such as, as shown in figure 17, zonule and Time domain combined DL DAI is 2 bits, is 2 bits with reference to DL DAI, and in subframe 0, UE detects five The PDCCH/EPDCCH being scheduled, in subframe 1, UE detects a PDCCH/EPDCCH being scheduled, In subframe 2, UE detects four PDCCH/EPDCCH being scheduled, and in subframe 3, UE detects two The PDCCH/EPDCCH being scheduled, the HARQ-ACK bit number of such subframe 0 is 5, HARQ-ACK Bit is: { O(0,0), O(0,1), O(0,2), O(0,3), O(0,4)}。O(0, i)According to the subframe detected The HARQ-ACK that the PDCCH/EPDCCH of i+1 PDSCH or the indicating downlink SPS release of 0 determines Bit.The HARQ-ACK bit number of subframe 1 is 1, and HARQ-ACK bit is: { O(1,0)}。O(1,0) The 1st PDSCH or the PDCCH/EPDCCH of indicating downlink SPS release according to the subframe 1 detected are true Fixed HARQ-ACK bit。The HARQ-ACK bit number of subframe 2 is 4, and HARQ-ACK bit is: {O(2,0), O(2,1), O(2,2), O(2,3)}。O(2, i)I+1 PDSCH according to the subframe 2 detected Or the HARQ-ACK bit that the PDCCH/EPDCCH of indicating downlink SPS release determines.4th subframe HARQ-ACK bit number is max{4, and 2}=4, HARQ-ACK bit is: { O(3,0), O(3,1), O(3, 2), O(3,3), O(, 3,0)The 1st PDSCH according to the subframe 3 detected or indicating downlink SPS release The HARQ-ACK bit that determines of PDCCH/EPDCCH, O(, 3,1)According to the subframe 3 detected the 2nd The HARQ-ACK bit that the PDCCH/EPDCCH of individual PDSCH or indicating downlink SPS release determines, O(3,2), O(3,3)For NACK.
Utilizing above method to ensure that in a descending sub frame, UE is only not detected by M' or M' Individual above PDCCH/EPDCCH just can make UE and eNB understand differently HARQ-ACK bit number cause, And UE is not detected by that M ' is individual or the probability of the individual above PDCCH/EPDCCH of M ' is the lowest, therefore due to The situation that PDCCH/EPDCCH number that PDCCH/EPDCCH Yu eNB that UE detects sends is inconsistent Cause UE and eNB HARQ-ACK bit number is understood differently cause situation occur probability the lowest.
Embodiment four
In this embodiment it is believed that the descending reference upstream and downstream configuration of the Serving cell of UE configuration is that TDD joins Putting, (zonule and time domain combined DL DAI include q bit, q for introducing zonule and time domain combined DL DAI It is a positive integer, such as, q=2 or 3 bits), it is used for representing the PDCCH/EPDCCH of scheduling PDSCH And till the PDCCH/EPDCCH of indicating downlink SPS release, in time-frequency binding window, have sent how many altogether Individual PDCCH/EPDCCH or scheduled how many transmission blocks (Transmission Block, TB), time-frequency Any one descending sub frame in binding window, arranges according to the order of time domain after first frequency domain in time-frequency binds window Sequence, as shown in Figure 5.If the transmission mode of Serving cell configuration is SIMO or the service being configured to MIMO When community and HARQ-ACK carry out space binding, the HARQ-ACK information bit in time-frequency binding window is The PDCCH/EPDCCH and indicating downlink SPS of the scheduling PDSCH that UE detects in time-frequency binding window Number L of the PDCCH/EPDCCH of release.If the transmission mode of the Serving cell of UE configuration has plenty of SIMO, has plenty of and is configured to the Serving cell of MIMO transmission pattern and HARQ-ACK does not carries out space binding Time, the tune that the HARQ-ACK information bit in time-frequency binding window detects in time-frequency binding window according to UE The number of the PDCCH/EPDCCH of PDCCH/EPDCCH and the indicating downlink SPS release of degree PDSCH And their transmission mode calculates.But, scheduling PDSCH in time-frequency binding window The UE of the PDCCH/EPDCCH of PDCCH/EPDCCH and indicating downlink SPS release may can't detect, As shown in figure 13.Therefore, UE and eNB may be different to the understanding of HARQ-ACK information bit. Therefore the bit number of HARQ-ACK information that UE sends is determined in eNB blind check to be passed through.
The method describing blind check below, eNB determines the HARQ-ACK of the actual transmission of UE by repeatedly blind check Information bit, the number of times of blind check is the most, the most likely finds the HARQ-ACK information ratio of the actual transmission of UE Special number, but be to increase blind check number of times and can increase the implementation complexity of eNB.
The method of blind check is, the transmission mode if all of Serving cell configuration is SIMO or is configured to MIMO Serving cell and HARQ-ACK carry out space binding, it is assumed that eNB is according to scheduling PDSCH Number L of PDCCH/EPDCCH of PDCCH/EPDCCH and indicating downlink SPS release, each scheduling The PDCCH/EPDCCH place service of PDCCH/EPDCCH and the indicating downlink SPS release of PDSCH The transmission mode of community and whether carried out space binding and determine that the information bit of HARQ-ACK is L', The maximum blind check number of times that eNB determines is S, such as, S=1,3,6, and respectively with the information ratio of HARQ-ACK Special number is L', L'-1 ..., L'-i ..., L'-S+1, most blind checks S time.Wherein, S=1 represents eNB Information bit just for HARQ-ACK is that L' detects.
If the transmission mode of the Serving cell of UE configuration has plenty of SIMO, have plenty of and be configured to MIMO transmission When the Serving cell of pattern and HARQ-ACK do not carry out space binding, or the biography of all of Serving cell configuration When defeated pattern is SIMO or the Serving cell being configured to MIMO and HARQ-ACK carry out space binding, false If eNB discharges according to the PDCCH/EPDCCH and indicating downlink SPS of scheduling PDSCH Number L of PDCCH/EPDCCH, the PDCCH/EPDCCH of each scheduling PDSCH and indicating downlink The transmission mode of PDCCH/EPDCCH place Serving cell of SPS release and whether carried out space binding Determine the information bit of HARQ-ACK be the blind check number of times that L', eNB determine be S, such as, S=1,3, 6, respectively with the information bit of HARQ-ACK as L', L'-r1..., L'-ri..., L'-rS-1, the blindest Examine S time, r thereiniPDCCH/EPDCCH and indicating downlink SPS for eNB scheduling PDSCH release The PDCCH/EPDCCH put i-th from back to front scheduling PDSCH PDCCH/EPDCCH and The HARQ-ACK bit number sum of the PDCCH/EPDCCH of indicating downlink SPS release.Such as, S=3, PDCCH/EPDCCH and the indicating downlink SPS release of scheduling PDSCH in time-frequency binding window The situation of PDCCH/EPDCCH is as shown in figure 14.ENB is first according to the information bit of HARQ-ACK Carry out blind check for L', if be detected that HARQ-ACK information, then stop blind check.If be not detected by HARQ-ACK information, then be that L'-2 carries out blind check, because finally according to the information bit of HARQ-ACK The HARQ-ACK bit number of the PDCCH/EPDCCH of PDSCH or the indicating downlink SPS release of scheduling is 2, if be detected that HARQ-ACK information, then stop.If being not detected by HARQ-ACK information, Be then that L'-2-1 carries out blind check according to the information bit of HARQ-ACK because the PDSCH of last scheduling or The HARQ-ACK bit number of the PDCCH/EPDCCH of indicating downlink SPS release is 2, and the second last is adjusted The HARQ-ACK bit number of the PDCCH/EPDCCH of PDSCH or the indicating downlink SPS release of degree is 1, Then whether eNB detects HARQ-ACK information, all stops.Wherein, S=1 represent eNB just for The information bit of HARQ-ACK is that L' detects.
In the above-mentioned the application of being, HARQ-ACK transmission method implements.Present invention also provides one HARQ-ACK transmission equipment, may be used for implementing above-mentioned transmission method.Figure 18 is that HARQ-ACK transmission sets Standby basic structure schematic diagram, as shown in figure 18, this equipment includes: feedback information determines unit and transmitting element.
Wherein, feedback information determines unit, for little according to scheduled Serving cell and each dispatch service Descending sub frame scheduled in district determines that it needs the HARQ-ACK feedback information sent at a sub-frame of uplink.Send out Send unit, for the HARQ-ACK feedback information determined is sent to eNB.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all in the present invention Spirit and principle within, any modification, equivalent substitution and improvement etc. done, should be included in the present invention protect Within the scope of protecting.

Claims (11)

1. strengthening a mixing automatic repeat request response HARQ-ACK transmission method for carrier aggregation system, it is special Levy and be, including:
User equipment (UE) is true according to the descending sub frame scheduled in scheduled Serving cell and each dispatch service community Its HARQ-ACK feedback information sent at sub-frame of uplink needs fixed；
The HARQ-ACK feedback information determined is sent to base station eNB by UE.
Method the most according to claim 1, it is characterised in that described determine described HARQ-ACK feedback letter Breath includes:
Described UE is according to the Physical Downlink Control Channel at Serving cell scheduling Physical Downlink Shared Channel PDSCH PDCCH/ strengthens Physical Downlink Control Channel EPDCCH and indicating downlink semi-continuous scheduling SPS release The zonule downlink distribution instruction DL DAI set in the Downlink Control Information DL DCI of PDCCH/EPDCCH Value, determine and need, at described sub-frame of uplink, the bit number of HARQ-ACK feedback information that sends；
Wherein, the value of described zonule DL DAI is used for indicating to the Serving cell at this DL DAI place, and one The PDCCH/EPDCCH sum sent in individual descending sub frame or the transmission block sum of scheduling.
Method the most according to claim 1, it is characterised in that described determine described HARQ-ACK feedback letter Breath includes:
Described UE releases according to the PDCCH/EPDCCH and indicating downlink SPS at Serving cell scheduling PDSCH The zonule set in the DL DCI of the PDCCH/EPDCCH put and the value of time domain combined DL DAI, determine The bit number of the HARQ-ACK feedback information sent is needed at described sub-frame of uplink；
Wherein, the value of described zonule and time domain combined DL DAI is for the descending son of instruction to this DL DAI place Till frame, the PDCCH/EPDCCH sum sent in time-frequency binding window or the transmission block sum of scheduling；Described time-frequency Binding window is all descending son on all carrier waves of described UE in same sub-frame of uplink feedback HARQ-ACK information The set of frame composition.
The most according to the method in claim 2 or 3, it is characterised in that determining that described HARQ-ACK feeds back During the bit number of information, further according in the PDCCH/EPDCCH of Serving cell scheduling PDSCH and instruction The value of the reverse DL DAI set in the DL DCI of the PDCCH/EPDCCH of descending SPS release or reference DL The value of DAI is carried out；
The value of described reverse DL DAI is, the Serving cell at this DL DAI place institute in the descending sub frame at its place There is sequence number when arranging according to the order that call number is descending in Serving cell, lose in being used for finding descending sub frame That loses is positioned at last PDCCH/EPDCCH；The described value with reference to DL DAI is used for indicating this DL DAI place Descending sub frame computed HARQ-ACK time scheduling PDSCH PDCCH/EPDCCH and indicating downlink SPS The sum of the PDCCH/EPDCCH of release or the sum of corresponding transmission block, the position lost in finding descending sub frame In last PDCCH/EPDCCH.
Method the most according to claim 3, it is characterised in that determining described HARQ-ACK feedback information Bit number time, further according at the Serving cell scheduling PDCCH/EPDCCH of PDSCH and indicating downlink The value of the reverse DL DAI set in the DL DCI of the PDCCH/EPDCCH of SPS release or reference DL DAI Value carry out；
Wherein, the value of described reverse DL DAI is, the Serving cell at this DL DAI place time-frequency at its place is tied up Sequence number when arranging according to the order that call number is descending in all Serving cells in determining window, is used for finding time-frequency That loses in binding window is positioned at last PDCCH/EPDCCH；The described value with reference to DL DAI is used for indicating this DL DAI place time-frequency binding window computed HARQ-ACK time scheduling PDSCH PDCCH/EPDCCH and The sum of the PDCCH/EPDCCH of indicating downlink SPS release or the sum of corresponding transmission block, be used for finding that time-frequency is tied up That loses in determining window is positioned at last PDCCH/EPDCCH.
Method the most according to claim 5, it is characterised in that
If the transmission mode of all Serving cells of UE configuration is all single input and multi-output SIMO, or, all configurations HARQ-ACK for the Serving cell of multiple-input and multiple-output MIMO transmission pattern carries out space binding, then described Determine that HARQ-ACK feedback information bit number isWherein,For time-frequency In binding window, during computed HARQ-ACK, the PDCCH/EPDCCH and indicating downlink SPS of scheduling PDSCH release The number of the PDCCH/EPDCCH put, L is UE detect in time-frequency binding window and according to described zonule and PDCCH/EPDCCH and the indicating downlink SPS release of the scheduling PDSCH that time domain combined DL DAI dopes The number of PDCCH/EPDCCH, q is zonule and the bit number of time domain combined DL DAI, and zonule and The bit number of time domain combined DL DAI is identical with the bit number with reference to DL DAI；
If existence is configured to MIMO and HARQ-ACK and does not carries out the biography of space binding in the Serving cell of UE configuration Defeated pattern, described determines that HARQ-ACK feedback information bit number is For the transmission block sum dispatched during computed HARQ-ACK in time-frequency binding window, L' is that UE binds window at time-frequency The transmission block sum of the scheduling inside detected and dope according to described zonule and time domain combined DL DAI.
The most according to the method in claim 2 or 3, it is characterised in that the method farther includes: under each Row subframe, when the HARQ-ACK bit number determined is less than the minimum HARQ-ACK bit number of this subframe set Time, the HARQ-ACK bit number of this subframe is modified to described minimum HARQ-ACK bit number.
Method the most according to claim 3, it is characterised in that send HARQ-ACK feedback at described UE After information, the method farther includes: eNB determines the HARQ-ACK of the actual transmission of described UE by blind check The bit number of feedback information.
Method the most according to claim 8, it is characterised in that when the transmission of all Serving cells of UE configuration Pattern is all SIMO, or, the HARQ-ACK of all Serving cells being configured to MIMO transmission pattern enters During row space binding, the blinded fashion of described eNB includes: divide according to HARQ-ACK feedback information bit number successively L', L'-1 ..., L'-i ..., L'-S+1 Wei not carry out blind check, in a blind check in office, if HARQ-ACK being detected Then stop blind check, determine that the bit number of the HARQ-ACK feedback information that described UE sends is that this blind check is corresponding HARQ-ACK feedback information bit number, if being not detected by HARQ-ACK, continues blind check next time, until completing S blind check then stops；
Wherein, described L' is the bit number of the HARQ-ACK feedback information that eNB determines, S be the blind check set Big number of times.
Method the most according to claim 8, it is characterised in that join when existing in the Serving cell of UE configuration When being set to the transmission mode that MIMO and HARQ-ACK does not carries out space binding, the blinded fashion of described eNB includes: It is respectively L', L'-r successively according to HARQ-ACK feedback information bit number1、…、L'-ri、…、L'-rS-1Carry out blind Inspection, in a blind check in office, if HARQ-ACK being detected, stopping blind check, determining what described UE sent The bit number of HARQ-ACK feedback information is the HARQ-ACK feedback information bit number that this blind check is corresponding, if not Detecting that HARQ-ACK then continues blind check next time, then stopping until completing S blind check；
Wherein, described L' is the bit number of the HARQ-ACK feedback information that eNB determines, S be the blind check set Big number of times, riPDCCH/EODCCH and the indicating downlink SPS release of PDSCH is dispatched for eNB The i-th scheduling PDCCH/EPDCCH of PDSCH from back to front or indicating downlink in PDCCH/EPDCCH The HARQ-ACK feedback information bit number of the PDCCH/EPDCCH of SPS release.
11. 1 kinds of HARQ-ACK transmission equipments strengthening carrier aggregation system, it is characterised in that including: feedback Information determination unit and transmitting element；
Described feedback information determines unit, for being adjusted according to scheduled Serving cell and each dispatch service community The descending sub frame of degree determines that it needs the HARQ-ACK feedback information sent at a sub-frame of uplink；
Described transmitting element, for being sent to eNB by the HARQ-ACK feedback information determined.
CN201510246241.9A 2015-05-14 2015-05-14 A kind of HARQ-ACK transmission method strengthening carrier aggregation system and equipment Pending CN106301702A (en)

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