CN102647261B - Scheduling signaling sending and response feedback method, system and equipment - Google Patents

Scheduling signaling sending and response feedback method, system and equipment Download PDF

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Publication number
CN102647261B
CN102647261B CN201110049742.XA CN201110049742A CN102647261B CN 102647261 B CN102647261 B CN 102647261B CN 201110049742 A CN201110049742 A CN 201110049742A CN 102647261 B CN102647261 B CN 102647261B
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data packet
downlink data
scheduling signaling
ack
terminal
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CN102647261A (en
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林亚男
沈祖康
高雪娟
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to CN201110049742.XA priority Critical patent/CN102647261B/en
Priority to PCT/CN2011/072460 priority patent/WO2011124127A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—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
    • H04L1/1854—Scheduling and prioritising arrangements
    • 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
    • H04L1/1607—Details of the supervisory signal
    • 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
    • H04L1/1861—Physical mapping arrangements

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

Abstract

The invention discloses a scheduling signaling sending and response feedback method, system and equipment, relating to the field of wireless communication and being used for increasing the transmission efficiency of a multicarrier polymerization system. In the method, a base station carries counting information into a downlink scheduling signaling to be sent to a terminal and carries the transmission situation information of a downlink data packet into an uplink scheduling signaling to be sent to the terminal; the terminal determines the length of an acknowledgement /negative acknowledgement ACK/NACK sequence needing to be sent in an uplink subframe according to the transmission situation information of the downlink data packet, and the terminal determines the position of the ACK/NACK information corresponding to the downlink data packet in the ACK/NACK sequence according to the counting information; and the ACK/NACK sequence is generated according to the length and position information, and the ACK/NACK sequence is sent to the base station. The transmission efficiency of the multicarrier polymerization system can be increased through the method, the system and the equipment.

Description

Method, system and the equipment of dispatch transmission and response feedback
Technical field
The present invention relates to wireless communication field, relate in particular to method, system and the equipment of a kind of dispatch transmission and response feedback.
Background technology
For long-term evolution multi-carrier system, for supporting than the wider system bandwidth of Long Term Evolution (LTE) system, such as 100MHz, a kind of may be the frequency spectrum that directly distributes 100M bandwidth, as shown in Figure 1; A kind of may be to distribute to some spectrum aggregatings of existing system, gather into large bandwidth and supply with long-term evolution multi-carrier system use, now in system, up-downgoing carrier wave can asymmetricly configure, be that user may take N >=1 carrier wave and carries out downlink transfer, M >=1 carrier wave carries out uplink, as shown in Figure 2.When the data on each descending carrier are independently carried out coding and decoding, user carries out respectively mixed automatic retransfer request (HARQ) (being answering/no answering (ACK/NACK) information) feedback by the packet on each carrier wave.Therefore, user may be simultaneously to a plurality of ACK/NACK information of base station feedback in a sub-frame of uplink.
In LTE version 8 (Rel 8) system, will be in same subframe simultaneously when transmit ascending data and ACK/NACK feedback information when terminal (UE), ACK/NACK information is transmitted the ad hoc resources taking in Physical Uplink Shared Channel (PUSCH).For Frequency Division Duplexing (FDD) (FDD) system, can feed back 2 bit informations at most at every turn, for time division duplex (TDD) system, can feed back 4 bit informations at most at every turn.
In LTE version 10 (Rel 10) system, can continue to use the method in Rel 8 systems, use PUSCH transmit ascending data and ACK/NACK simultaneously; Also can in same subframe, transmit PUSCH and Physical Uplink Control Channel (PUCCH) simultaneously, now in reusable Rel 8 systems, PUCCH format 2/2a/2b transmits many bit ACK/NACK, also can introduce new PUCCH structure simultaneously, to carry jumbo ascending control information, comprise channel quality indication (CQI), ACK/NACK etc.
Long-term evolution upgrading (LTE-A) system is determined and can be supported at most 5 carrier waves to carry out polymerization at present.Need in same subframe, carry out a plurality of descending carriers and the descending sub frame of ACK/NACK feedback, hereinafter referred to as " feedback window ".For FDD system, the descending carrier quantity N of the big or small L=UE polymerization of feedback window.For TDD system, the big or small L=N * M of feedback window, wherein N is the descending carrier number of UE polymerization, the descending sub frame quantity that M correspondence is fed back at same sub-frame of uplink, for different uplink-downlink configuration and sub-frame of uplink, the value of M is different, i.e. the quantity of each hurdle K in table 1.
Table 1
In realizing process of the present invention, inventor finds to exist in prior art following technical problem:
In multi-carrier aggregation system, when base station side dynamic dispatching PUSCH and many bit ACK/NACK transmit in same sub-frame of uplink, the bit number of the ACK/NACK sequence that terminal how to confirm need to send in this sub-frame of uplink does not also have specific implementation, makes the efficiency of transmission of multi-carrier aggregation system be subject to impact.
Summary of the invention
The embodiment of the present invention provides dispatch sending method and a kind of base station in a kind of multi-carrier aggregation system, for solving multi-carrier aggregation system terminal, cannot obtain ACK/NACK sequence length for determine to need sending and ACK/NACK information corresponding to downlink data packet in the problem of the information of ACK/NACK sequence position.
A dispatch sending method in multi-carrier aggregation system, the method comprises:
Base station need to be in current feedback window during dispatch terminal downlink data receiving bag, count information is carried in descending scheduling signaling, and this descending scheduling signaling is sent to terminal;
When base station needs dispatch terminal to send Physical Uplink Shared Channel PUSCH in sub-frame of uplink corresponding to current feedback window, downlink data packet transmission situation information in current feedback window is carried in uplink scheduling signaling, and this uplink scheduling signaling is sent to terminal;
Described count information is terminal for determining the information of position in the ACK/NACK sequence that answering/no answering ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling is dispatched sends at described sub-frame of uplink; Described downlink data packet transmission situation information is for terminal, to determine the information of the length of described ACK/NACK sequence; Described current feedback window comprises on a plurality of downlink member carriers of terminal support need to carry out the descending sub frame of ACK/NACK feedback in described sub-frame of uplink.
A base station, this base station comprises:
Descending scheduling signaling transmitting element, during dispatch terminal downlink data receiving bag, is carried at count information in descending scheduling signaling, and this descending scheduling signaling is sent to terminal in current feedback window for needs;
Uplink scheduling signaling transmitting element, for needing dispatch terminal when sub-frame of uplink corresponding to current feedback window sends Physical Uplink Shared Channel PUSCH, downlink data packet transmission situation information in current feedback window is carried in uplink scheduling signaling, and this uplink scheduling signaling is sent to terminal;
Described count information is terminal for determining the information of position in the ACK/NACK sequence that answering/no answering ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling is dispatched sends at described sub-frame of uplink; Described downlink data packet transmission situation information is for terminal, to determine the information of the length of described ACK/NACK sequence; Described current feedback window comprises on a plurality of downlink member carriers of terminal support need to carry out the descending sub frame of ACK/NACK feedback in described sub-frame of uplink.
In this programme, base station is carried at descending scheduling signaling by count information and sends to terminal, downlink data packet is transmitted to situation information and be carried in uplink scheduling signaling and send to terminal.Visible, adopting terminal in this programme multi-carrier aggregation system can obtain for determining needs the ACK/NACK sequence length that sends and ACK/NACK information corresponding to downlink data packet in the information of the position of ACK/NACK sequence.
The embodiment of the present invention also provides a kind of response feedback method in multi-carrier aggregation system, a kind of terminal and a kind of LTE-A communication system, for improving the efficiency of transmission of multi-carrier aggregation system.
A response feedback method in multi-carrier aggregation system, the method comprises:
Terminal receives the descending scheduling signaling of this terminal of scheduling downlink data receiving bag of sending in current feedback window base station, and this terminal of scheduling that send base station sends the uplink scheduling signaling of Physical Uplink Shared Channel PUSCH in sub-frame of uplink corresponding to current feedback window; In described descending scheduling signaling, carry count information, in described uplink scheduling signaling, carry the downlink data packet transmission situation information in described current feedback window;
Terminal is determined the length of the answering/no answering ACK/NACK sequence that need to send in described sub-frame of uplink according to described downlink data packet transmission situation information, according to described count information, determine the position of ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling dispatches in described ACK/NACK sequence;
Terminal is according to definite length and location Information generation ACK/NACK sequence, and this ACK/NACK sequence is sent to base station.
A terminal, this terminal comprises:
Dispatch receiving element, for receive the descending scheduling signaling of this terminal of scheduling downlink data receiving bag of sending base station in current feedback window, and this terminal of scheduling that send base station sends the uplink scheduling signaling of Physical Uplink Shared Channel PUSCH in sub-frame of uplink corresponding to current feedback window; In described descending scheduling signaling, carry count information, in described uplink scheduling signaling, carry the downlink data packet transmission situation information in described current feedback window;
Feedback sequence extension position determining unit, for determine the length of the answering/no answering ACK/NACK sequence that need to send at described sub-frame of uplink according to described downlink data packet transmission situation information, according to described count information, determine the position of ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling dispatches in described ACK/NACK sequence;
Feedback sequence transmitting element, for the length and location Information generation ACK/NACK sequence definite according to described feedback sequence extension position determining unit, and sends to base station by this ACK/NACK sequence.
A long-term evolution upgrading LTE-A communication system, this system comprises:
Base station, during dispatch terminal downlink data receiving bag, is carried at count information in descending scheduling signaling, and this descending scheduling signaling is sent to terminal in current feedback window for needs; While needing dispatch terminal to send Physical Uplink Shared Channel PUSCH in sub-frame of uplink corresponding to current feedback window, downlink data packet transmission situation information in current feedback window is carried in uplink scheduling signaling, and this uplink scheduling signaling is sent to terminal; Described current feedback window comprises on a plurality of downlink member carriers of terminal support need to carry out the descending sub frame of ACK/NACK feedback in described sub-frame of uplink;
Terminal, be used for receiving described uplink scheduling signaling and descending scheduling signaling, according to described downlink data packet transmission situation information, determine the length of the answering/no answering ACK/NACK sequence that need to send in described sub-frame of uplink, according to described count information, determine the position of ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling dispatches in described ACK/NACK sequence; According to definite length and location Information generation ACK/NACK sequence, and this ACK/NACK sequence is sent to base station.
In this programme, terminal can be determined according to the downlink data packet transmission situation information of carrying in uplink scheduling signaling the length of the receiving feedback information sequence that need to send in sub-frame of uplink, according to the count information carrying in descending scheduling signaling, determine the position of ACK/NACK information corresponding to downlink data packet in ACK/NACK sequence, thereby according to definite length and location Information generation ACK/NACK sequence and send to base station, can effectively improve the efficiency of transmission of system.
Accompanying drawing explanation
Fig. 1 is single-frequency spectral system schematic of the prior art;
Fig. 2 is frequency spectrum polymerization system schematic diagram of the prior art;
The method flow schematic diagram that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 A is the PDSCH scheduling schematic diagram in the embodiment of the present invention one;
Fig. 4 B is the corresponding schematic diagram of the ACK/NACK sequence in the embodiment of the present invention one;
Fig. 4 C is the corresponding schematic diagram of another ACK/NACK sequence in the embodiment of the present invention one;
Fig. 4 D is the corresponding schematic diagram of the ACK/NACK sequence in the embodiment of the present invention two;
Fig. 4 E is the corresponding schematic diagram of another ACK/NACK sequence in the embodiment of the present invention two;
Fig. 4 F is the corresponding schematic diagram of another ACK/NACK sequence in the embodiment of the present invention three;
The system configuration schematic diagram that Fig. 5 provides for the embodiment of the present invention;
The architecture of base station schematic diagram that Fig. 6 provides for the embodiment of the present invention;
The terminal structure schematic diagram that Fig. 7 provides for the embodiment of the present invention.
Embodiment
In order to make UE in multi-carrier aggregation system when same sub-frame of uplink sends ACK/NACK information corresponding to packet on a plurality of descending carriers, can determine ACK/NACK information that the length of ACK/NACK sequence of these ACK/NACK information of carrying and each packet the are corresponding position in ACK/NACK sequence, thereby improve the efficiency of transmission of system, the embodiment of the present invention provides transmission and the response feedback method of the dispatch in a kind of multi-carrier aggregation system, in this method, terminal is determined the length of the ACK/NACK sequence that need to send in sub-frame of uplink according to the downlink data packet transmission situation information in uplink scheduling signaling, according to the count information in descending scheduling signaling, determine the position of ACK/NACK information corresponding to downlink data packet in ACK/NACK sequence.
Referring to Fig. 3, the transmission of the uplink scheduling signaling in the multi-carrier aggregation system that the embodiment of the present invention provides and reception feedback method, specifically comprise the following steps:
Step 30: when base station needs dispatch terminal to send PUSCH in sub-frame of uplink corresponding to current feedback window, determine the downlink data packet transmission situation in current feedback window; Current feedback window comprises on a plurality of downlink member carriers of terminal support need to send the descending sub frame of packet receiving feedback information in described sub-frame of uplink;
Here, downlink data packet transmission situation in current feedback window refers to that current feedback window comprises the downlink data packet transmission situation in downlink transfer resource, and the descending sub frame that need to send packet receiving feedback information on a plurality of downlink member carriers that the downlink transfer resource comprising in current feedback window is supported by terminal in described sub-frame of uplink forms.Need in sub-frame of uplink, send the descending sub frame of packet receiving feedback information, refer to that terminal need to be sent in the receiving feedback information of the downlink data packet receiving in this descending sub frame in this sub-frame of uplink.Need in certain sub-frame of uplink, be sent in the receiving feedback information of the downlink data packet receiving in which descending sub frame, can determine according to table 1.
For FDD and TDD system, the downlink member carrier in feedback window is the downlink member carrier in state of activation in a plurality of downlink member carriers in the downlink member carrier set of configuration or downlink member carrier set.
Sub-frame of uplink corresponding to current feedback window refers to sub-frame of uplink corresponding to descending sub frame that current feedback window comprises, and this corresponding relation presets.
If base station sends a plurality of uplink scheduling signalings to described terminal in a descending sub frame, the value that is carried at the described downlink data packet transmission situation information in each uplink scheduling signaling is identical.
Step 31: base station is carried at the information of downlink data packet transmission situation in the current feedback window of determining in uplink scheduling signaling (UL grant), and this uplink scheduling signaling is sent to terminal;
Step 32: terminal receives described uplink scheduling signaling, according to the length of the definite receiving feedback information sequence that need to send in described sub-frame of uplink of described downlink data packet transmission situation information;
Step 33: terminal sends the receiving feedback information sequence with described length to base station.
In base station side:
In step 30, the downlink data packet transmission situation in current feedback window is determined in base station, and its specific implementation can adopt following two kinds:
The first, the total number that has carried out the descending sub frame of downlink data packet scheduled transmission in current feedback window is determined in base station, the downlink data packet transmission situation information using the total number information of this descending sub frame in settled front feedback window.
The second, the total number of the downlink data packet of scheduled transmission in current feedback window is determined in base station, the downlink data packet transmission situation information using the total number information of this downlink data packet in settled front feedback window.
Preferably, when above-mentioned first kind of way, for the position of receiving feedback information corresponding to each downlink data packet of terminal can being determined send in current feedback window in receiving feedback information sequence, base station can also be at needs in current feedback window during dispatch terminal downlink data receiving bag, to terminal, send the descending scheduling signaling (DL grant) carry count information, the descending sub frame that this count information represents to send this downlink data packet is which descending sub frame that carries out downlink data packet scheduled transmission in current feedback window.
The transmission of descending scheduling signaling can send before the transmission of uplink scheduling signaling or with described uplink scheduling signaling in same subframe.
Same, when the above-mentioned second way, for the position of receiving feedback information corresponding to each downlink data packet of terminal can being determined send in current feedback window in receiving feedback information sequence, base station can also be at needs in current feedback window during dispatch terminal downlink data receiving bag, to terminal, send the descending scheduling signaling of carrying count information, this count information represents that the downlink data packet that this descending scheduling signaling is dispatched is which downlink data packet of scheduled transmission in described feedback window.
The transmission of descending scheduling signaling can send before the transmission of uplink scheduling signaling or with described uplink scheduling signaling in same subframe.
Above-mentioned count information can be carried in the DAI territory of descending scheduling signaling.Accordingly, terminal is obtained count information in the DAI territory from descending scheduling signaling.
In step 31, base station can be carried at the information of downlink data packet transmission situation in the current feedback window of determining in descending allocation identification (Downlink Assignment Index, the DAI) territory of uplink scheduling signaling.Accordingly, terminal is obtained the downlink data packet transmission situation information in feedback window in the DAI territory from uplink scheduling signaling.
If base station sends a plurality of uplink scheduling signalings to described terminal in a descending sub frame, the value in the DAI territory in each uplink scheduling signaling is identical.
In end side:
In step 32, if the downlink data packet of carrying in uplink scheduling signaling transmission situation information is the total number that has carried out the descending sub frame of downlink data packet scheduled transmission in feedback window, terminal is determined the length of the receiving feedback information sequence that need to send in described sub-frame of uplink according to this downlink data packet transmission situation information, and its specific implementation can be as follows:
The bit number Q that terminal comprises according to definite answering/no answering (ACK/NACK) sequence that need to send in described sub-frame of uplink of following formula:
Q=C*N*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; M is the total number of described descending sub frame; Or,
c wherein nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nbe 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; C on un-activation carrier wave nbe 1; M is the total number of described descending sub frame.
Accordingly, in step 33, terminal sends the receiving feedback information sequence with described length to base station, and its specific implementation can be as follows:
Terminal receives the descending scheduling signaling that the descending sub frame in feedback window is sent, and in this descending scheduling signaling, carries count information, and this count information represents that this descending sub frame is which descending sub frame that carries out downlink data packet scheduled transmission in described feedback window; Terminal can receive descending scheduling signaling before terminal receives uplink scheduling signaling or in the descending sub frame that sends uplink scheduling signaling.Terminal is according to the count information in each descending scheduling signaling receiving, and determines the bit position of ACK/NACK information corresponding to downlink data packet that each descending scheduling signaling dispatches in ACK/NACK sequence.The reception condition of the downlink data packet that terminal is dispatched according to definite bit position and each descending scheduling signaling, the ACK/NACK sequence that to generate bit number be Q, and this ACK/NACK sequence is sent to base station.
Concrete, the Q bit in ACK/NACK sequence is divided into M part; If the value of described count information is P, the descending sub frame that sends the downlink data packet that described descending scheduling signaling dispatches is arranged on I carrier wave of described a plurality of downlink member carriers, when single codeword is transmitted, determine that ACK/NACK information corresponding to this downlink data packet takies I bit position of P part in described M part; When many codeword transmission, determine that ACK/NACK information corresponding to this downlink data packet takies 2*I-1 and 2*I the bit position of P part in described M part.
For example, as Fig. 4 A and Fig. 4 B, the total number that has carried out the descending sub frame of downlink data packet scheduled transmission in feedback window is 2, the terminal accordingly bit number of definite ACK/NACK sequence is 6, the count information value of carrying in the descending scheduling signaling receiving on first descending sub frame of the descending carrier 1 in feedback window is 1, the count information value of carrying in the descending scheduling signaling receiving on first descending sub frame of the descending carrier 2 in feedback window is 1, the count information value of carrying in the descending scheduling signaling receiving on the 3rd descending sub frame of the descending carrier 2 in feedback window is 2, need the 6 bit ACK/NACK sequence { b0 sending, b1, ..., in b5}, receiving feedback information corresponding to downlink data packet that b0 dispatches for being carried on the descending scheduling signaling that receives on first descending sub frame of the descending carrier 1 in feedback window, if terminal correctly receives this downlink data packet, b0 can be set to represent 0 of ACK, if terminal does not correctly receive this downlink data packet, b0 can be set to represent 1 of NACK, receiving feedback information corresponding to downlink data packet that b1 dispatches for being carried on the descending scheduling signaling that receives on first descending sub frame of the descending carrier 2 in feedback window, if terminal correctly receives this downlink data packet, b1 can be set to represent 0 of ACK, if terminal does not correctly receive this downlink data packet, b1 can be set to represent 1 of NACK, on first descending sub frame due to the descending carrier in feedback window 3 not, receive downlink data packet, b2 is set to represent 1 of NACK, on the 3rd descending sub frame due to the descending carrier in feedback window 1 not, receive downlink data packet, b3 is set to represent 1 of NACK, receiving feedback information corresponding to downlink data packet that b4 dispatches for being carried on the descending scheduling signaling that receives on the 3rd descending sub frame of the descending carrier 2 in feedback window, if terminal correctly receives this downlink data packet, b4 can be set to represent 0 of ACK, if terminal does not correctly receive this downlink data packet, b4 can be set to represent 1 of NACK, on the 3rd descending sub frame due to the descending carrier in feedback window 3 not, receive downlink data packet, b5 is set to represent 1 of NACK.
Or, if the value of described count information is P, the descending sub frame that sends the downlink data packet that described descending scheduling signaling dispatches is arranged on I carrier wave of described a plurality of downlink member carriers, determines that ACK/NACK information corresponding to this downlink data packet takies the of P part in described M part with individual bit position, wherein C nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nfor.
In step 32, if the downlink data packet of carrying in uplink scheduling signaling transmission situation information is the total number of the downlink data packet of scheduled transmission in feedback window, terminal is determined the length of the receiving feedback information sequence that need to send in described sub-frame of uplink according to this downlink data packet transmission situation information, and its specific implementation can be as follows:
The bit number Q that terminal comprises according to the definite ACK/NACK sequence that need to send in described sub-frame of uplink of following formula:
Q=C*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; M is the total number of described downlink data packet.
Accordingly, in step 33, terminal sends the receiving feedback information sequence with described length to base station, and its specific implementation can be as follows:
Terminal receives the descending scheduling signaling that the descending sub frame in described feedback window is sent, in this descending scheduling signaling, carry count information, this count information represents that the downlink data packet that this descending scheduling signaling is dispatched is which downlink data packet of scheduled transmission in described feedback window; Terminal can receive descending scheduling signaling before terminal receives uplink scheduling signaling or in the descending sub frame that sends uplink scheduling signaling.Terminal is according to the count information in each descending scheduling signaling receiving, and determines the bit position of ACK/NAC information corresponding to downlink data packet that each descending scheduling signaling dispatches in ACK/NACK sequence.The reception condition of the downlink data packet that terminal is dispatched according to definite bit position and described each descending scheduling signaling, the ACK/NACK sequence that to generate bit number be Q, and this ACK/NACK sequence is sent to base station.
Concrete, if the downlink data packet that described descending scheduling signaling is dispatched is I the packet receiving, determine that ACK/NACK information corresponding to this downlink data packet takies I bit position of described ACK/NACK sequence in current feedback window.
For example, for example, as Fig. 4 A and Fig. 4 D, in feedback window, the total number of the downlink data packet of scheduled transmission is 3, the terminal accordingly bit number of definite ACK/NACK sequence is 3, the count information value of carrying in the descending scheduling signaling receiving on first descending sub frame of the descending carrier 1 in feedback window is 1, the count information value of carrying in the descending scheduling signaling receiving on first descending sub frame of the descending carrier 2 in feedback window is 2, the count information value of carrying in the descending scheduling signaling receiving on the 3rd descending sub frame of the descending carrier 2 in feedback window is 3, need the 3 bit ACK/NACK sequence { b0 sending, b1, in b2}, receiving feedback information corresponding to downlink data packet that b0 dispatches for being carried on the descending scheduling signaling that receives on first descending sub frame of the descending carrier 1 in feedback window, if terminal correctly receives this downlink data packet, b0 can be set to represent 0 of ACK, if terminal does not correctly receive this downlink data packet, b0 can be set to represent 1 of NACK, receiving feedback information corresponding to downlink data packet that b1 dispatches for being carried on the descending scheduling signaling that receives on first descending sub frame of the descending carrier 2 in feedback window, if terminal correctly receives this downlink data packet, b1 can be set to represent 0 of ACK, if terminal does not correctly receive this downlink data packet, b1 can be set to represent 1 of NACK, receiving feedback information corresponding to downlink data packet that b2 dispatches for being carried on the descending scheduling signaling that receives on the 3rd descending sub frame of the descending carrier 2 in feedback window, if terminal correctly receives this downlink data packet, b2 can be set to represent 0 of ACK, if terminal does not correctly receive this downlink data packet, b2 can be set to represent 1 of NACK.
With specific embodiment, the present invention will be described below:
While carrying out the multiplexing feedback of many bit ACK/NACK, for the sub-frame of uplink that has UL grant scheduling, the bit number of the ACK/NACK that UE transmits in this subframe will be determined according to the DAI in UL grant.
Method one: use the descending sub frame number M that has data packet dispatching transmission in DAI indication feedback window in UL grant, 2 bit DAI in reusable R8 TDD UL grant, M=2 in the example shown in Fig. 4 A.UE will feed back the ACK/NACK information of C * N * M bit in corresponding sub-frame of uplink, and wherein C is code word number (C=1 during single codeword transmission, C=2 during many codeword transmission), and N is the number of carriers in the descending carrier set of configuration or the number of carriers of activation.Wherein without the running time-frequency resource correspondence of transfer of data, feed back NACK.
DAI in DL grant is as counter, the subframe that represents current scheduling data packet transmission is the subframe of which this UE transfer of data of scheduling in feedback transmission, as for DAI=1 in the corresponding DL grant of PDSCH1 and PDSCH2 in Fig. 4 A, DAI=2 in the corresponding DL grant of PDSCH3.
Embodiment mono-:
If UE carries out single codeword transmission, the descending carrier set of its configuration be descending carrier 1, descending carrier 2, descending carrier 3}, the carrier wave wherein activating is descending carrier 1 and descending carrier 2.
If N for configuration descending carrier set in number of carriers, UE to feed back 6 bit ACK/nack message b0, b1 ..., b5}, wherein b2, b3, b5 are NACK, as shown in Figure 4 B.
If N for configuration descending carrier set in activation number of carriers, UE to feed back 4 bit ACK/nack message b0, b1, b2, b3}, wherein b2 is NACK, as shown in Figure 4 C.
Method two: use the packet sum M of scheduled transmission in DAI indication feedback window in UL grant, available 5 bit DAI indicate, M=3 in the example shown in Fig. 4 A.UE will feed back the ACK/NACK information of C * M bit in corresponding sub-frame of uplink, and wherein C is code word number (C=1 during single codeword transmission, C=2 during many codeword transmission).
DAI in DL grant is as counter, represent that current scheduling packet is which packet that belongs to this UE in feedback transmission, its numeration order is carried out according to the order of time domain after first frequency domain, as for DAI=1 in the corresponding DL grant of PDSCH1 in Fig. 4 A, DAI=2 in the corresponding DL grant of PDSCH2, DAI=3 in the corresponding DL grant of PDSCH3.The ACK/NACK information that UE can determine corresponding data bag according to the DAI in DL grant shared position in feedback information sequence.If find that there is data-bag lost, feed back NACK.
Embodiment bis-:
If UE carries out single codeword transmission, the DAI=3 in UL grant, UE to base station feedback 3 bit ACK/nack message b0, b1, b2}, as shown in Figure 4 D.
Method three: use the descending sub frame number M that has data packet dispatching transmission in DAI indication feedback window in UL grant, 2 bit DAI in reusable R8 TDD UL grant, M=2 in the example shown in Fig. 4 E.UE will feed back in corresponding sub-frame of uplink c wherein nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nbe 2; N is that network side is the number of downlink member carrier or the number of carriers of activation in the downlink member carrier set of terminal configuration; C on un-activation carrier wave nbe 1; Wherein without the resource correspondence of transfer of data, feed back NACK.
DAI in DL grant is as counter, the subframe that represents current scheduling data packet transmission is the subframe of which this UE transfer of data of scheduling in feedback transmission, as for DAI=1 in the corresponding DL grant of PDSCH1 and PDSCH2 in Fig. 4 A, DAI=2 in the corresponding DL grant of PDSCH3.
Embodiment tri-:
If the descending carrier set of UE configuration be descending carrier 1, descending carrier 2, descending carrier 3}, the carrier wave wherein activating is descending carrier 1 and descending carrier 2, and for single codeword, transmits on descending carrier 1, is many codeword transmission on descending carrier 2.
If N for configuration descending carrier set in number of carriers, UE to feed back 8 bit ACK/nack message b0, b1 ..., b7}, wherein b3, b4, b7 are NACK, as shown in Figure 4 E.
If N for configuration descending carrier set in activation number of carriers, UE to feed back 6 bit ACK/nack message b0, b1 ..., b5}, wherein b3 is NACK, as shown in Fig. 4 F.
For above-mentioned three kinds of methods, because which resource base station end knows for sure in without data dispatch, can know in feedback sequence that feedback information corresponding on which position is NACK, therefore when the feedback information of reception, demodulation UE, can carry out using corresponding information as Given information decoding, thereby can reduce actual code rate, improve the reliability of feedback information.
Referring to Fig. 5, the embodiment of the present invention also provides a kind of LTE-A communication system, and this system comprises:
Base station 50, during dispatch terminal downlink data receiving bag, is carried at count information in descending scheduling signaling, and this descending scheduling signaling is sent to terminal in current feedback window for needs; While needing dispatch terminal to send Physical Uplink Shared Channel PUSCH in sub-frame of uplink corresponding to current feedback window, downlink data packet transmission situation information in current feedback window is carried in uplink scheduling signaling, and this uplink scheduling signaling is sent to terminal; Described current feedback window comprises on a plurality of downlink member carriers of terminal support need to carry out the descending sub frame of ACK/NACK feedback in described sub-frame of uplink;
Terminal 51, be used for receiving described uplink scheduling signaling and descending scheduling signaling, according to described downlink data packet transmission situation information, determine the length of the answering/no answering ACK/NACK sequence that need to send in described sub-frame of uplink, according to described count information, determine the position of ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling dispatches in described ACK/NACK sequence; According to definite length and location Information generation ACK/NACK sequence, and this ACK/NACK sequence is sent to base station.
Described base station 50 for:
The total number that has carried out the descending sub frame of downlink data packet scheduled transmission in current feedback window is carried in uplink scheduling signaling, and this uplink scheduling signaling is sent to terminal;
Described terminal 51 for:
The bit number Q comprising according to the definite ACK/NACK sequence that need to send in described sub-frame of uplink of following formula:
Q=C*N*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; M is the total number of described descending sub frame; Or,
c wherein nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nbe 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; C on un-activation carrier wave nbe 1; M is the total number of described descending sub frame.
Described base station 50 for:
By the descending sub frame that represents the downlink data packet that the described descending scheduling signaling of transmission is dispatched, be that the count information that carries out which descending sub frame of downlink data packet scheduled transmission in described feedback window is carried in described descending scheduling signaling, and this descending scheduling signaling is sent to terminal;
Described terminal 51 for:
Q bit in described ACK/NACK sequence is divided into M part;
If the value of described count information is P, the descending sub frame that sends the downlink data packet that described descending scheduling signaling dispatches is arranged on I carrier wave of described a plurality of downlink member carriers, when single codeword is transmitted, determine that ACK/NACK information corresponding to this downlink data packet takies I bit position of P part in described M part; When many codeword transmission, determine that ACK/NACK information corresponding to this downlink data packet takies 2*I-1 and 2*I the bit position of P part in described M part.
Or, if the value of described count information is P, the descending sub frame that sends the downlink data packet that described descending scheduling signaling dispatches is arranged on I carrier wave of described a plurality of downlink member carriers, determines that ACK/NACK information corresponding to this downlink data packet takies the of P part in described M part with individual bit position, wherein C nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nfor.
Described base station 50 for:
The total number of the downlink data packet of scheduled transmission in current feedback window is carried in uplink scheduling signaling, and this uplink scheduling signaling is sent to terminal;
Described terminal 51 for:
The bit number Q comprising according to the definite ACK/NACK sequence that need to send in described sub-frame of uplink of following formula, and to base station, send the ACK/NACK sequence that bit number is Q:
Q=C*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; M is the total number of described downlink data packet.
Described base station 50 for:
The downlink data packet that the described descending scheduling signaling of expression is dispatched is that the count information of which downlink data packet of scheduled transmission in described feedback window is carried in described descending scheduling signaling, and this descending scheduling signaling is sent to terminal;
Described terminal 51 for:
If the downlink data packet that described descending scheduling signaling is dispatched is I the packet receiving, determine that ACK/NACK information corresponding to this downlink data packet takies I bit position of described ACK/NACK sequence in current feedback window.
Described base station 50 for:
While sending a plurality of uplink scheduling signaling to described terminal in a descending sub frame, the value that is carried at the downlink data packet transmission situation information in each uplink scheduling signaling is identical.
Referring to Fig. 6, the embodiment of the present invention also provides a kind of base station, can be applied in above-mentioned LTE-A communication system, and this base station comprises:
Descending scheduling signaling transmitting element 60, during dispatch terminal downlink data receiving bag, is carried at count information in descending scheduling signaling, and this descending scheduling signaling is sent to terminal in current feedback window for needs;
Uplink scheduling signaling transmitting element 61, for needing dispatch terminal when sub-frame of uplink corresponding to current feedback window sends Physical Uplink Shared Channel PUSCH, downlink data packet transmission situation information in current feedback window is carried in uplink scheduling signaling, and this uplink scheduling signaling is sent to terminal;
Described count information is terminal for determining the information of position in the ACK/NACK sequence that answering/no answering ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling is dispatched sends at described sub-frame of uplink; Described downlink data packet transmission situation information is for terminal, to determine the information of the length of described ACK/NACK sequence; Described current feedback window comprises on a plurality of downlink member carriers of terminal support need to carry out the descending sub frame of ACK/NACK feedback in described sub-frame of uplink.
Described uplink scheduling signaling transmitting element 61 for:
The total number that has carried out the downlink data packet of scheduled transmission in the total number of descending sub frame of downlink data packet scheduled transmission or current feedback window in current feedback window is carried in uplink scheduling signaling, and this uplink scheduling signaling is sent to terminal.
Described uplink scheduling signaling transmitting element 61 for:
While sending a plurality of uplink scheduling signaling to described terminal in a descending sub frame, the value that is carried at the downlink data packet transmission situation information in each uplink scheduling signaling is identical.
Described descending scheduling signaling transmitting element 60 for:
The total number that has carried out the descending sub frame of downlink data packet scheduled transmission at described uplink scheduling signaling transmitting element in by current feedback window be carried at uplink scheduling signaling in time, by the descending sub frame that represents the downlink data packet that the described descending scheduling signaling of transmission is dispatched, be that the count information that carries out which descending sub frame of downlink data packet scheduled transmission in described feedback window is carried in descending scheduling signaling, and this descending scheduling signaling is sent to terminal.
Described descending scheduling signaling transmitting element 60 for:
Described uplink scheduling signaling transmitting element by current feedback window in the total number of downlink data packet of scheduled transmission be carried at uplink scheduling signaling in time, the downlink data packet that the described descending scheduling signaling of expression is dispatched is that the count information of which downlink data packet of scheduled transmission in described feedback window is carried in descending scheduling signaling, and this descending scheduling signaling is sent to terminal.
Described uplink scheduling signaling transmitting element 61 for:
Downlink data packet transmission situation information in the current feedback window of determining is carried in the descending allocation identification DAI territory of uplink scheduling signaling;
Described uplink scheduling signaling transmitting element 61 for:
While sending a plurality of uplink scheduling signaling to described terminal in a descending sub frame, the value in the DAI territory in each uplink scheduling signaling is identical.
Described descending scheduling signaling transmitting element 60 for:
Described count information is carried in the DAI territory of described descending scheduling signaling.
A plurality of downlink member carriers of described terminal support are:
Network side is a plurality of downlink member carriers in the downlink member carrier set of terminal configuration; Or,
Network side is a plurality of downlink member carriers in state of activation in the downlink member carrier set of terminal configuration.
Referring to Fig. 7, the embodiment of the present invention also provides a kind of terminal, can be applied in above-mentioned LTE-A communication system, and this terminal comprises:
Dispatch receiving element 70, for receive the descending scheduling signaling of this terminal of scheduling downlink data receiving bag of sending base station in current feedback window, and base station is sent this terminal of scheduling and in sub-frame of uplink corresponding to current feedback window, is sent the uplink scheduling signaling of Physical Uplink Shared Channel PUSCH; In described descending scheduling signaling, carry count information, in described uplink scheduling signaling, carry the downlink data packet transmission situation information in described current feedback window;
Feedback sequence extension position determining unit 71, for determine the length of the answering/no answering ACK/NACK sequence that need to send at described sub-frame of uplink according to described downlink data packet transmission situation information, according to described count information, determine the position of ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling dispatches in described ACK/NACK sequence;
Feedback sequence transmitting element 72, for the length and location Information generation ACK/NACK sequence definite according to described feedback sequence extension position determining unit, and sends to base station by this ACK/NACK sequence.
Described feedback sequence extension position determining unit 71 for:
In described downlink data packet transmission situation information, be while having carried out the total number of descending sub frame of downlink data packet scheduled transmission in described feedback window, according to following formula, determine the bit number Q that the answering/no answering ACK/NACK sequence that need to send comprises in described sub-frame of uplink:
Q=C*N*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; M is the total number of described descending sub frame; Or,
c wherein nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nbe 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; C on un-activation carrier wave nbe 1; M is the total number of described descending sub frame.
Described feedback sequence extension position determining unit 71 for:
The descending sub frame that represents to send the downlink data packet that described descending scheduling signaling dispatches at described count information is, while carrying out which descending sub frame of downlink data packet scheduled transmission in described feedback window, the Q bit in described ACK/NACK sequence to be divided into M part; If the value of described count information is P, the descending sub frame that sends the downlink data packet that described descending scheduling signaling dispatches is arranged on I carrier wave of described a plurality of downlink member carriers, when single codeword is transmitted, determine that ACK/NACK information corresponding to this downlink data packet takies I bit position of P part in described M part; When many codeword transmission, determine that ACK/NACK information corresponding to this downlink data packet takies 2*I-1 and 2*I the bit position of P part in described M part
Or, if the value of described count information is P, the descending sub frame that sends the downlink data packet that described descending scheduling signaling dispatches is arranged on I carrier wave of described a plurality of downlink member carriers, determines that ACK/NACK information corresponding to this downlink data packet takies the of P part in described M part with individual bit position, wherein C nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nfor.
Described feedback sequence extension position determining unit 71 for:
When described downlink data packet transmission situation information is the total number of the downlink data packet of scheduled transmission in described feedback window, the bit number Q comprising according to the definite ACK/NACK sequence that need to send in described sub-frame of uplink of following formula:
Q=C*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; M is the total number of described downlink data packet.
Described feedback sequence extension position determining unit 71 for:
When described count information represents that downlink data packet that described descending scheduling signaling is dispatched is which downlink data packet of scheduled transmission in described feedback window, if the downlink data packet that described descending scheduling signaling is dispatched is I the packet receiving, determine that ACK/NACK information corresponding to this downlink data packet takies I bit position of described ACK/NACK sequence in current feedback window.
To sum up, beneficial effect of the present invention comprises:
In the scheme that the embodiment of the present invention provides, terminal can be determined according to the downlink data packet transmission situation information of carrying in uplink scheduling signaling the length of the receiving feedback information sequence that need to send in sub-frame of uplink, according to the count information carrying in descending scheduling signaling, determine the position of ACK/NACK information corresponding to downlink data packet in ACK/NACK sequence, thereby according to definite length and location Information generation ACK/NACK sequence and send to base station, can effectively improve the efficiency of transmission of system.
In the LTE-A system that use the present invention provides, UE determines the method for the bit number of the ACK/NACK sequence that actual needs feeds back according to the DAI in UL grant, uplink control signaling efficiency of transmission in effectively raising system, the method is applicable to FDD system and TDD system simultaneously.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims (24)

1. the dispatch sending method in multi-carrier aggregation system, is characterized in that, the method comprises:
Base station need to be in current feedback window during dispatch terminal downlink data receiving bag, count information is carried in descending scheduling signaling, and this descending scheduling signaling is sent to terminal;
When base station needs dispatch terminal to send Physical Uplink Shared Channel PUSCH in sub-frame of uplink corresponding to current feedback window, downlink data packet transmission situation information in current feedback window is carried in uplink scheduling signaling, and this uplink scheduling signaling is sent to terminal;
Described count information is terminal for determining the information of position in the ACK/NACK sequence that answering/no answering ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling is dispatched sends at described sub-frame of uplink; Downlink data packet transmission situation information in described current feedback window is for terminal, to determine the information of the length of described ACK/NACK sequence, downlink data packet transmission situation information in described current feedback window is the total number that has carried out the descending sub frame of downlink data packet scheduled transmission in current feedback window, or, the total number of the downlink data packet of scheduled transmission in current feedback window; Described current feedback window comprises on a plurality of downlink member carriers of terminal support need to carry out the descending sub frame of ACK/NACK feedback in described sub-frame of uplink;
Wherein, downlink data packet in described current feedback window transmission situation information is that while having carried out the total number of descending sub frame of downlink data packet scheduled transmission in described current feedback window, terminal determines that according to described downlink data packet transmission situation information the length of the ACK/NACK sequence that need to send in described sub-frame of uplink comprises:
The bit number Q that terminal comprises according to the definite answering/no answering ACK/NACK sequence that need to send in described sub-frame of uplink of following formula:
Q=C*N*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; M is the total number of described descending sub frame; Or,
c wherein nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nbe 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; C on un-activation carrier wave nbe 1; M is the total number of described descending sub frame;
When the downlink data packet transmission situation information in described current feedback window is the total number of the downlink data packet of scheduled transmission in described feedback window, terminal determines that according to described downlink data packet transmission situation information the length of the ACK/NACK sequence that need to send in described sub-frame of uplink comprises:
The bit number Q that terminal comprises according to the definite ACK/NACK sequence that need to send in described sub-frame of uplink of following formula:
Q=C*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; M is the total number of described downlink data packet.
2. the method for claim 1, is characterized in that, when base station sends a plurality of uplink scheduling signaling to described terminal in a descending sub frame, the value that is carried at the downlink data packet transmission situation information in each uplink scheduling signaling is identical.
3. the method for claim 1, it is characterized in that, during total number that downlink data packet in described current feedback window transmission situation information is described descending sub frame, described count information represents: the descending sub frame that sends the downlink data packet that described descending scheduling signaling dispatches is which descending sub frame that carries out downlink data packet scheduled transmission in described feedback window.
4. the method for claim 1, it is characterized in that, when the downlink data packet in described current feedback window is transmitted the total number that situation information is described downlink data packet, described count information represents: the downlink data packet that described descending scheduling signaling is dispatched is which downlink data packet of scheduled transmission in described feedback window.
5. as the method as described in arbitrary in claim 1-4, it is characterized in that, base station is carried at the downlink data packet transmission situation information in described current feedback window in the descending allocation identification DAI territory of described uplink scheduling signaling;
Base station is carried at described count information in the DAI territory of described descending scheduling signaling.
6. method as claimed in claim 5, is characterized in that, when base station sends a plurality of uplink scheduling signaling to described terminal in a descending sub frame, the value in the DAI territory in each uplink scheduling signaling is identical.
7. as the method as described in arbitrary in claim 1-4, it is characterized in that, a plurality of downlink member carriers of described terminal support are:
Network side is a plurality of downlink member carriers in the downlink member carrier set of terminal configuration; Or,
Network side is a plurality of downlink member carriers in state of activation in the downlink member carrier set of terminal configuration.
8. the response feedback method in multi-carrier aggregation system, is characterized in that, the method comprises:
Terminal receives the descending scheduling signaling of this terminal of scheduling downlink data receiving bag of sending in current feedback window base station, and this terminal of scheduling that send base station sends the uplink scheduling signaling of Physical Uplink Shared Channel PUSCH in the corresponding sub-frame of uplink of current feedback window; In described descending scheduling signaling, carry count information, in described uplink scheduling signaling, carry the downlink data packet transmission situation information in described current feedback window;
Terminal is determined the length of the answering/no answering ACK/NACK sequence that need to send in described sub-frame of uplink according to described downlink data packet transmission situation information, according to described count information, determine the position of ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling dispatches in described ACK/NACK sequence;
Terminal is according to definite length and location Information generation ACK/NACK sequence, and this ACK/NACK sequence is sent to base station;
Wherein, in described downlink data packet transmission situation information, be that while having carried out the total number of descending sub frame of downlink data packet scheduled transmission in described current feedback window, described terminal determines that according to described downlink data packet transmission situation information the length of the ACK/NACK sequence that need to send in described sub-frame of uplink comprises:
The bit number Q that terminal comprises according to the definite answering/no answering ACK/NACK sequence that need to send in described sub-frame of uplink of following formula:
Q=C*N*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; M is the total number of described descending sub frame; Or,
c wherein nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nbe 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; C on un-activation carrier wave nbe 1; M is the total number of described descending sub frame;
When described downlink data packet transmission situation information is the total number of the downlink data packet of scheduled transmission in described feedback window, described terminal determines that according to described downlink data packet transmission situation information the length of the ACK/NACK sequence that need to send in described sub-frame of uplink comprises:
The bit number Q that terminal comprises according to the definite ACK/NACK sequence that need to send in described sub-frame of uplink of following formula:
Q=C*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; M is the total number of described downlink data packet.
9. method as claimed in claim 8, it is characterized in that, in described downlink data packet transmission situation information, be while having carried out the total number of descending sub frame of downlink data packet scheduled transmission in described current feedback window, the descending sub frame that described count information represents to send the downlink data packet that described descending scheduling signaling dispatches is which descending sub frame that carries out downlink data packet scheduled transmission in described feedback window, describedly according to described count information, determine that the position of ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling dispatches in described ACK/NACK sequence comprises:
Q bit in described ACK/NACK sequence is divided into M part;
If the value of described count information is P, the descending sub frame that sends the downlink data packet that described descending scheduling signaling dispatches is arranged on I carrier wave of described a plurality of downlink member carriers, when single codeword is transmitted, determine that ACK/NACK information corresponding to this downlink data packet takies I bit position of P part in described M part; When many codeword transmission, determine that ACK/NACK information corresponding to this downlink data packet takies 2*I-1 and 2*I the bit position of P part in described M part; Or,
If the value of described count information is P, the descending sub frame that sends the downlink data packet that described descending scheduling signaling dispatches is arranged on I carrier wave of described a plurality of downlink member carriers, determines that ACK/NACK information corresponding to this downlink data packet takies the of P part in described M part with individual bit position, wherein C nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nbe 2.
10. method as claimed in claim 8, it is characterized in that, when described downlink data packet transmission situation information is the total number of the downlink data packet of scheduled transmission in described feedback window, described count information represents that downlink data packet that described descending scheduling signaling is dispatched is which downlink data packet of scheduled transmission in described feedback window, describedly according to described count information, determines that the position of ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling dispatches in described ACK/NACK sequence comprises:
If the downlink data packet that described descending scheduling signaling is dispatched is I the packet receiving, determine that ACK/NACK information corresponding to this downlink data packet takies I bit position of described ACK/NACK sequence in current feedback window.
11. 1 kinds of base stations, is characterized in that, this base station comprises:
Descending scheduling signaling transmitting element, during dispatch terminal downlink data receiving bag, is carried at count information in descending scheduling signaling, and this descending scheduling signaling is sent to terminal in current feedback window for needs;
Uplink scheduling signaling transmitting element, for needing dispatch terminal when sub-frame of uplink corresponding to current feedback window sends Physical Uplink Shared Channel PUSCH, downlink data packet transmission situation information in current feedback window is carried in uplink scheduling signaling, and this uplink scheduling signaling is sent to terminal;
Described count information is terminal for determining the information of position in the ACK/NACK sequence that answering/no answering ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling is dispatched sends at described sub-frame of uplink; Downlink data packet transmission situation information in described current feedback window is for terminal, to determine the information of the length of described ACK/NACK sequence, downlink data packet transmission situation information in described current feedback window is the total number that has carried out the descending sub frame of downlink data packet scheduled transmission in current feedback window, or, the total number of the downlink data packet of scheduled transmission in current feedback window; Described current feedback window comprises on a plurality of downlink member carriers of terminal support need to carry out the descending sub frame of ACK/NACK feedback in described sub-frame of uplink;
Wherein, downlink data packet in described current feedback window transmission situation information is that while having carried out the total number of descending sub frame of downlink data packet scheduled transmission in described current feedback window, terminal determines that according to described downlink data packet transmission situation information the length of the ACK/NACK sequence that need to send in described sub-frame of uplink comprises:
The bit number Q that terminal comprises according to the definite answering/no answering ACK/NACK sequence that need to send in described sub-frame of uplink of following formula:
Q=C*N*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; M is the total number of described descending sub frame; Or,
c wherein nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nbe 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; C on un-activation carrier wave nbe 1; M is the total number of described descending sub frame;
When the downlink data packet transmission situation information in described current feedback window is the total number of the downlink data packet of scheduled transmission in described feedback window, terminal determines that according to described downlink data packet transmission situation information the length of the ACK/NACK sequence that need to send in described sub-frame of uplink comprises:
The bit number Q that terminal comprises according to the definite ACK/NACK sequence that need to send in described sub-frame of uplink of following formula:
Q=C*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; M is the total number of described downlink data packet.
12. base stations as claimed in claim 11, is characterized in that, described uplink scheduling signaling transmitting element is used for:
While sending a plurality of uplink scheduling signaling to described terminal in a descending sub frame, the value that is carried at the downlink data packet transmission situation information in each uplink scheduling signaling is identical.
13. base stations as claimed in claim 11, is characterized in that, described descending scheduling signaling transmitting element is used for:
The total number that has carried out the descending sub frame of downlink data packet scheduled transmission at described uplink scheduling signaling transmitting element in by current feedback window be carried at uplink scheduling signaling in time, by the descending sub frame that represents the downlink data packet that the described descending scheduling signaling of transmission is dispatched, be that the count information that carries out which descending sub frame of downlink data packet scheduled transmission in described feedback window is carried in descending scheduling signaling, and this descending scheduling signaling is sent to terminal.
14. base stations as claimed in claim 11, is characterized in that, described descending scheduling signaling transmitting element is used for:
Described uplink scheduling signaling transmitting element by current feedback window in the total number of downlink data packet of scheduled transmission be carried at uplink scheduling signaling in time, the downlink data packet that the described descending scheduling signaling of expression is dispatched is that the count information of which downlink data packet of scheduled transmission in described feedback window is carried in descending scheduling signaling, and this descending scheduling signaling is sent to terminal.
15. as the base station as described in arbitrary in claim 11-14, it is characterized in that, described uplink scheduling signaling transmitting element is used for:
Downlink data packet transmission situation information in the current feedback window of determining is carried in the descending allocation identification DAI territory of uplink scheduling signaling;
Described descending scheduling signaling transmitting element is used for:
Described count information is carried in the DAI territory of described descending scheduling signaling.
16. base stations as claimed in claim 15, is characterized in that, described uplink scheduling signaling transmitting element is used for:
While sending a plurality of uplink scheduling signaling to described terminal in a descending sub frame, the value in the DAI territory in each uplink scheduling signaling is identical.
17. as the base station as described in arbitrary in claim 11-14, it is characterized in that, a plurality of downlink member carriers of described terminal support are:
Network side is a plurality of downlink member carriers in the downlink member carrier set of terminal configuration; Or,
Network side is a plurality of downlink member carriers in state of activation in the downlink member carrier set of terminal configuration.
18. 1 kinds of terminals, is characterized in that, this terminal comprises:
Dispatch receiving element, for receive the descending scheduling signaling of this terminal of scheduling downlink data receiving bag of sending base station in current feedback window, and this terminal of scheduling that send base station sends the uplink scheduling signaling of Physical Uplink Shared Channel PUSCH in the corresponding sub-frame of uplink of current feedback window; In described descending scheduling signaling, carry count information, in described uplink scheduling signaling, carry the downlink data packet transmission situation information in described current feedback window;
Feedback sequence extension position determining unit, for determine the length of the answering/no answering ACK/NACK sequence that need to send at described sub-frame of uplink according to described downlink data packet transmission situation information, according to described count information, determine the position of ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling dispatches in described ACK/NACK sequence;
Feedback sequence transmitting element, for the length and location Information generation ACK/NACK sequence definite according to described feedback sequence extension position determining unit, and sends to base station by this ACK/NACK sequence;
Wherein, in described downlink data packet transmission situation information, be that while having carried out the total number of descending sub frame of downlink data packet scheduled transmission in described current feedback window, described feedback sequence extension position determining unit determines that according to described downlink data packet transmission situation information the length of the ACK/NACK sequence that need to send in described sub-frame of uplink comprises:
The bit number Q that terminal comprises according to the definite answering/no answering ACK/NACK sequence that need to send in described sub-frame of uplink of following formula:
Q=C*N*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; M is the total number of described descending sub frame; Or,
c wherein nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nbe 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; C on un-activation carrier wave nbe 1; M is the total number of described descending sub frame;
When described downlink data packet transmission situation information is the total number of the downlink data packet of scheduled transmission in described feedback window, described feedback sequence extension position determining unit determines that according to described downlink data packet transmission situation information the length of the ACK/NACK sequence that need to send in described sub-frame of uplink comprises:
The bit number Q that terminal comprises according to the definite ACK/NACK sequence that need to send in described sub-frame of uplink of following formula:
Q=C*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; M is the total number of described downlink data packet.
19. terminals as claimed in claim 18, is characterized in that, described feedback sequence extension position determining unit is used for:
In described downlink data packet transmission situation information, be in described current feedback window, to have carried out the total number of the descending sub frame of downlink data packet scheduled transmission, the descending sub frame that described count information represents to send the downlink data packet that described descending scheduling signaling dispatches is, while carrying out which descending sub frame of downlink data packet scheduled transmission in described feedback window, the Q bit in described ACK/NACK sequence to be divided into M part; If the value of described count information is P, the descending sub frame that sends the downlink data packet that described descending scheduling signaling dispatches is arranged on I carrier wave of described a plurality of downlink member carriers, when single codeword is transmitted, determine that ACK/NACK information corresponding to this downlink data packet takies I bit position of P part in described M part; When many codeword transmission, determine that ACK/NACK information corresponding to this downlink data packet takies 2*I-1 and 2*I the bit position of P part in described M part; Or,
If the value of described count information is P, the descending sub frame that sends the downlink data packet that described descending scheduling signaling dispatches is arranged on I carrier wave of described a plurality of downlink member carriers, determines that ACK/NACK information corresponding to this downlink data packet takies the of P part in described M part with individual bit position, wherein C nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nbe 2.
20. terminals as claimed in claim 18, is characterized in that, described feedback sequence extension position determining unit is used for:
In described downlink data packet transmission situation information, it is the total number of the downlink data packet of scheduled transmission in described feedback window, when described count information represents that downlink data packet that described descending scheduling signaling is dispatched is which downlink data packet of scheduled transmission in described feedback window, if the downlink data packet that described descending scheduling signaling is dispatched is I the packet receiving, determine that ACK/NACK information corresponding to this downlink data packet takies I bit position of described ACK/NACK sequence in current feedback window.
21. 1 kinds of long-term evolution upgrading LTE-A communication systems, is characterized in that, this system comprises:
Base station, during dispatch terminal downlink data receiving bag, is carried at count information in descending scheduling signaling, and this descending scheduling signaling is sent to terminal in current feedback window for needs; While needing dispatch terminal to send Physical Uplink Shared Channel PUSCH in sub-frame of uplink corresponding to current feedback window, downlink data packet transmission situation information in current feedback window is carried in uplink scheduling signaling, and this uplink scheduling signaling is sent to terminal; Described current feedback window comprises on a plurality of downlink member carriers of terminal support need to carry out the descending sub frame of ACK/NACK feedback in described sub-frame of uplink;
Wherein, the downlink data packet transmission situation information in described current feedback window is the total number that has carried out the descending sub frame of downlink data packet scheduled transmission in current feedback window, or, the total number of the downlink data packet of scheduled transmission in current feedback window;
Terminal, be used for receiving described uplink scheduling signaling and descending scheduling signaling, according to described downlink data packet transmission situation information, determine the length of the answering/no answering ACK/NACK sequence that need to send in described sub-frame of uplink, according to described count information, determine the position of ACK/NACK information corresponding to downlink data packet that described descending scheduling signaling dispatches in described ACK/NACK sequence; According to definite length and location Information generation ACK/NACK sequence, and this ACK/NACK sequence is sent to base station;
Wherein, in described downlink data packet transmission situation information, be that while having carried out the total number of descending sub frame of downlink data packet scheduled transmission in described current feedback window, described terminal determines that according to described downlink data packet transmission situation information the length of the ACK/NACK sequence that need to send in described sub-frame of uplink comprises:
The bit number Q that terminal comprises according to the definite answering/no answering ACK/NACK sequence that need to send in described sub-frame of uplink of following formula:
Q=C*N*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; M is the total number of described descending sub frame; Or,
c wherein nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nbe 2; N is that network side is the number of the downlink member carrier in state of activation in the number of downlink member carrier in the downlink member carrier set of terminal configuration or this downlink member carrier set; C on un-activation carrier wave nbe 1; M is the total number of described descending sub frame;
When described downlink data packet transmission situation information is the total number of the downlink data packet of scheduled transmission in described feedback window, described terminal determines that according to described downlink data packet transmission situation information the length of the ACK/NACK sequence that need to send in described sub-frame of uplink comprises:
The bit number Q that terminal comprises according to the definite ACK/NACK sequence that need to send in described sub-frame of uplink of following formula:
Q=C*M, wherein C is code word number, and during single codeword transmission, C is 1, and during many codeword transmission, C is 2; M is the total number of described downlink data packet.
22. systems as claimed in claim 21, is characterized in that, in described downlink data packet transmission situation information, are while having carried out the total number of descending sub frame of downlink data packet scheduled transmission in described current feedback window,
Described base station is used for:
By the descending sub frame that represents the downlink data packet that the described descending scheduling signaling of transmission is dispatched, be that the count information that carries out which descending sub frame of downlink data packet scheduled transmission in described feedback window is carried in described descending scheduling signaling, and this descending scheduling signaling is sent to terminal;
Described terminal is used for:
Q bit in described ACK/NACK sequence is divided into M part;
If the value of described count information is P, the descending sub frame that sends the downlink data packet that described descending scheduling signaling dispatches is arranged on I carrier wave of described a plurality of downlink member carriers, when single codeword is transmitted, determine that ACK/NACK information corresponding to this downlink data packet takies I bit position of P part in described M part; When many codeword transmission, determine that ACK/NACK information corresponding to this downlink data packet takies 2*I-1 and 2*I the bit position of P part in described M part; Or,
If the value of described count information is P, the descending sub frame that sends the downlink data packet that described descending scheduling signaling dispatches is arranged on I carrier wave of described a plurality of downlink member carriers, determines that ACK/NACK information corresponding to this downlink data packet takies the of P part in described M part with individual bit position, wherein C nfor the code word number in carrier wave n, C during single codeword transmission nbe 1, C during many codeword transmission nbe 2.
23. systems as claimed in claim 21, is characterized in that, when described downlink data packet transmission situation information is the total number of the downlink data packet of scheduled transmission in described feedback window,
Described base station is used for:
The downlink data packet that the described descending scheduling signaling of expression is dispatched is that the count information of which downlink data packet of scheduled transmission in described feedback window is carried in described descending scheduling signaling, and this descending scheduling signaling is sent to terminal;
Described terminal is used for:
If the downlink data packet that described descending scheduling signaling is dispatched is I the packet receiving, determine that ACK/NACK information corresponding to this downlink data packet takies I bit position of described ACK/NACK sequence in current feedback window.
24. systems as claimed in claim 21, is characterized in that, described base station is used for:
While sending a plurality of uplink scheduling signaling to described terminal in a descending sub frame, the value that is carried at the downlink data packet transmission situation information in each uplink scheduling signaling is identical.
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