WO2012062128A1

WO2012062128A1 - Method, terminal and base station for transmitting uplink control signals

Info

Publication number: WO2012062128A1
Application number: PCT/CN2011/077417
Authority: WO
Inventors: 梁春丽; 戴博; 喻斌; 杨维维
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-09
Filing date: 2011-07-21
Publication date: 2012-05-18
Also published as: CN101986591A; CN101986591B

Abstract

Disclosed are a method, terminal and base station for transmitting uplink control signals. The transmitting method for uplink control signals comprises: the terminal determines the status information for expressing configuration carrier acknowledgment according to the correct/incorrect acknowledgment/negative acknowledgment (ACK/NACK) messages of N-number of physical downlink shared channels (PDSCH) to be fed back, maps the determined status information as 2-bit information according to the established mapping relation, and transmit the 2-bit information and other uplink control information on a physical uplink control channel agreed upon with the base station. At least one embodiment of the present invention can transmit multiple ACK/NACK messages and other uplink control information.

Description

Transmission method of uplink control signaling, terminal and base station

Technical field

The present invention relates to a transmission technology of uplink control signaling, and in particular to a transmission technology of a terminal, a base station, and an uplink control signaling in a multi-carrier system with a large bandwidth.

Background technique

The rapid development of digital communication systems places higher demands on the reliability of data communication. However, in harsh channels, especially in high data rate or high-speed mobile environments, multipath interference and Doppler shift are severely Affects system performance. Therefore, effective error control techniques, especially Hybrid Automatic Repeat Request (HARQ) technology, have become a hot research topic in the field of communication.

In the downlink HARQ of the Long Term Evolution (LTE), an ACK/NACK (ACK/NACK, Acknowledgement/Negative Acknowledgement) response message of the Physical Downlink Shared Channel (PDSCH), when the terminal (UE, When there is no physical uplink shared channel (PUSCH), the user equipment is transmitted on the physical uplink control channel (PUCCH, Physical Uplink Control Channel).

In the current LTE system, the physical uplink control channel can support multiple uplink control signaling, including a correct/error response message, and channel state information (CSI, Channel Quality Indicator, CQI, Channel Quality Indicator). A precoding matrix indicator (ΡΜΙ, Precoding Matrix Indicator) and a rank indicator (RI, Rank Indicator), a scheduling request (SR, Scheduling Request), and a combination of them simultaneously transmitted.

LTE defines a variety of PUCCH formats, including PUCCH format 1/la/lb (the channel structure is shown in Figure 1) and format 2/2a/2b (the channel structure is shown in Figure 2). Format 1 is used to send the scheduling request of the UE. The formats la and lb are used to feed back the 1-bit ACK/NACK response message and the 2-bit ACK/NACK response message respectively. The format 2 is used to send the downlink channel state information. To send CSI and 1 bit An ACK/NACK response message, format 2b is used to transmit CSI information and a 2-bit ACK/NACK response message.

In the LTE system, in the frequency division duplex system (FDD), since the uplink and downlink subframes are corresponding, when the PDSCH contains only one transport block, the UE needs to feed back a 1-bit ACK/NACK response message, when the PDSCH When two transport blocks are included, the UE shall feed back a 2-bit ACK/NACK response message. Therefore, in the LTE FDD system, when the UE needs to simultaneously transmit the SR and ACK/NACK response messages: When transmitting the negative SR (indicating that no scheduling request is required), the UE transmits 1 bit on the ACK/NACK PUCCH resource allocated to it or 2-bit ACK/NACK response message, and when a positive SR is to be transmitted (indicating that a scheduling request is made), the UE transmits a 1-bit or 2-bit ACK/NACK response message on the SR PUCCH resource allocated to it; when the UE needs to simultaneously send an ACK /NACK response message and CSI information, if the subframe is a normal cyclic prefix, a 1-bit or 2-bit ACK/NACK response message is modulated onto the second reference signal of each slot, and transmitted by format2a/2b, If the subframe is an extended cyclic prefix, the 1-bit or 2-bit ACK/NACK response message and the CSI information are jointly encoded, and the format 2 transmission is used for transmission.

In the LTE time division duplex (TDD) system, the uplink and downlink subframes are no longer corresponding to each other. According to different uplink and downlink subframe configurations, one uplink subframe sometimes needs to feed back ACKs of multiple downlink subframes. /NACK response message, where a plurality of downlink subframes corresponding to one uplink subframe are referred to as a bundling window. In LTE, two ACK/NACK feedback modes are defined: One is the binding mode (bundling). The core idea of the method is to have 2 codeword streams in a downlink subframe in the uplink subframe. To feed back a 2-bit ACK/NACK response message, if each subframe has only one word stream, the UE should feed back a 1-bit ACK/NACK response message; the other is a multiplexing mode (multiplexing, that is, multiplexing with channel selection, also The core idea of the mode is to use different PUCCH channels and different modulation symbols on the channel to indicate different feedback states of the downlink subframes that need to be fed back in the uplink subframe, if there are many downlink subframes. For each word stream, the ACK/NACK fed back by multiple word streams of the downlink subframe is logically AND (also called spatial bundling), then channel selection is performed, and then transmitted using PUCCH format lb. That is, the 2-bit information b(0) and b(l) carried by the PUCCH format lb, and the index of the PUCCH channel, indicate that the logical AND operation has been performed. ACK/NACK information.

Therefore, in the TDD system, when the ACK/NACK response message needs to be transmitted simultaneously with the SR or CQI, the transmission method is different from that in the FDD system described above. In the TDD, when the ACK/NACK response message needs to be sent simultaneously with the SR or the CQI, the UE spatially binds the multiple ACK/NACK response messages in the binding window to obtain the ACK/NACK corresponding to each downlink subframe. The response message is then sent to the second reference signal of the PUCCH format 2b according to the number of ACKs that have been spatially bound in the binding window, or is modulated on the second reference signal of the PUCCH format 2b, or 6 ( 0) ^(1) Co-coded with CQI and transmitted on PUCCH format 2 (the latter two cases correspond to scenes where CQI and ACK/NACK are simultaneously transmitted). The number of ACKs after the space binding in the binding window has a preset mapping relationship with 6(0)^(1), as shown in Table 1:

Table 1: The mapping between the number of ACKs and 6(0), b(\) after space binding in the binding window

In the IMT-Advanced (International Mobile Telecommunications-Advanced) system, high-speed data transmission can be realized, and Large system capacity, IMT-Advanced system peak rate can reach lGbit/s in low-speed mobile and hotspot coverage. In high-speed mobile and wide-area coverage, the peak rate of IMT-Advanced system can reach 100Mbit/ s.

In order to meet the requirements of the ITU-Advanced (International Telecommunication Union-Advanced), the LTE-A (Long Term Evolution Advanced) system needs to support larger system bandwidth (up to Up to 100MHz) and need to be backward compatible with LTE existing standards. Based on the existing LTE system, the bandwidth of the LTE system can be combined to obtain a larger bandwidth. This technology is called Carrier Aggregation (CA) technology, which can improve the spectrum of the IMT-Advance system. Utilization and mitigation of spectrum resources are scarce, thereby optimizing the utilization of spectrum resources.

After the introduction of carrier aggregation, in the current discussion about the relationship between the downlink component carrier and the PDSCH transport block and the HARQ process, a basic working assumption is that when no space division multiplexing is used, one downlink component carrier corresponds to one PDSCH transport block and one HARQ process. That is, the UE needs to feed back 1-bit ACK/NACK response information for one PDSCH transport block of each component carrier. When using space division multiplexing, LTE-A currently specifies up to 2 transport blocks. Therefore, when space division multiplexing is used, the UE needs to feed back a 2-bit ACK/NACK response message for 2 PDSCH transmission blocks of each downlink component carrier.

In the LTE-A system using spectrum aggregation technology, the uplink bandwidth and the downlink bandwidth may include multiple component carriers. When the base station schedules a PDSCH for a certain UE on multiple downlink component carriers, and when the UE does not transmit a PUSCH in the current subframe, the terminal needs to feed back the ACK of the PDSCH transmission of the multiple downlink component carriers on the PUCCH. NACK response message. A current work assumes that these ACK/NACK response messages are sent over a UE-specific uplink component carrier; for SR information, the current one assumes that the UE transmits only one SR, and this SR information is passed through a UE-specific The uplink component carrier is transmitted. For CSI information, the current work assumes that the CSI information is transmitted through a UE-specific uplink component carrier.

In the LTE-A system, the current work assumes that for the SR information, the UE uses PUCCH format 1 to transmit, for CSI, the UE uses PUCCH format 2 to transmit, and for the ACK/NACK response message, it can be used in LTE. Defined PUCCH format la and lb, channel selection (multiplexing with channel selection) 夕, LTE-A boosts the port - a new DFT-s-OFDM based format for transmitting larger payload ACK/NACK response messages, the channel structure is shown in Figure 3. As shown, this structure is referred to as PUCCH Format 3 for the convenience of description. Which way the UE uses to feed back ACK/NACK is configured by the upper layer.

In the LTE-A FDD system, when the UE is configured, PUCCH format 3 feedback is used.

In the case of ACK/NACK, if the UE also sends an SR in the current subframe, the UE jointly encodes the SR with multiple ACK/NACK response messages and then transmits them on PUCCH format 3. For the UE configured to use the channel selection to feed back ACK/NACK, if the current subframe also needs to send SR or CSI at the same time, if the method of TDD in LTE is followed, we can see from Table 1 that when the base station receives When 6(0)^(1)=(1, 1), the base station will not be able to determine whether the UE correctly received one or correctly received four PDSCHs. Therefore, from the perspective of the robustness of the system, the base station assumes that only one is received. Therefore, for a scenario in which the UE correctly receives four PDSCHs, the base station is also retransmitted, and thus the system throughput performance is degraded. If this method is applied to LTE-A, for FDD systems, when the number of carriers allocated to the UE is 4, the above problem will also exist. Therefore, there is a need for an improved ACK/NACK and SR/CSI simultaneous transmission method. Summary of the invention

The technical problem to be solved by the present invention is to provide a method for transmitting uplink control signaling, a terminal, and a base station, so that a terminal in a multi-carrier system with a large bandwidth transmits an ACK/NACK response message and other uplink control information to the base station.

In order to solve the above problem, the present invention discloses a method for transmitting uplink control signaling, and the method includes:

The terminal determines state information for indicating a response of the configuration carrier according to the correct/error ACK/NACK response message of the N physical downlink shared channel PDSCHs to be fed back, and maps the determined state information to 2-bit information according to the set mapping relationship. And transmitting the 2-bit information and other uplink control information except the 2-bit information on a physical uplink control channel agreed with the base station.

The method further includes: receiving, by the base station, the 2-bit information, determining, according to the set mapping relationship, status information corresponding to the 2-bit information, where the determined status information indicates that the terminal is not all When all PDSCHs are correctly received, all PDSCHs scheduled are retransmitted.

The N is a sum of a PDSCH including downlink allocation signaling and a PDSCH without downlink allocation signaling, where N is a positive integer;

Among them, in the frequency division duplex system, 1 < N ≤ 5;

In a time division duplex system, 1 < N ≤ 20.

The determining, by the terminal, the status information for indicating the response of the configured carrier according to the ACK/NACK response message of the N PDSCHs to be fed back includes:

The terminal performs logical AND operation on the ACK/NACK response messages of the N PDSCHs to be fed back;

When the logical AND operation result is NACK, the result of the logical AND operation is determined as the status information, and when the logical AND operation result is ACK, the result of the logical AND operation and the number of logical AND operations ACK are determined as Status information; or

When the logical AND operation result is ACK, the result of the logical AND operation and the detected number of PDSCHs are determined as the status information.

The step of mapping the determined state information into 2-bit information according to the set mapping relationship includes:

When the logical and operation result of the ACK/NACK response message of the N PDSCHs is NACK, or the terminal detects that the downlink allocation loss has occurred, it is determined as the first state information, and the first state information is mapped to the 2-bit information (0) , 0) ;

When the ACK/NACK response message logical AND operation result of the N PDSCHs is ACK, and the number of logical AND operations ACKs is 1, 4, 7, 10, 13, 16, or 19, it is determined as the second status information, and the The second state information is mapped to 2-bit information (0, 1);

When the ACK/NACK response message logical AND operation result of the N PDSCHs is ACK, and the number of logical AND operations ACKs is 2, 5, 8, 11, 14, 17, 20, it is determined as the third status information, and the The third state information is mapped to 2-bit information (1, 0);

When the ACK/NACK response message logical AND operation result of the N PDSCHs is ACK, and the number of logical AND operations ACKs is 3, 6, 9, 12, 15, 18, it is determined as the fourth status information, and the fourth status is determined. The status information is mapped to 2-bit information (1, 1). The step of determining, by the terminal, status information indicating a response of the configuration carrier according to the ACK/NACK response message of the PDSCHs to be fed back includes:

The ACK/NACK response result corresponding to the primary carrier of the N configuration carriers to be fed back, and the ACK/NACK response result corresponding to the predefined secondary carrier are determined as the status information.

When the ACK/NACK response result of the primary carrier is NACK, and the ACK/NACK response result of the secondary carrier is NACK, the first state information is determined, and the first state information is mapped to 2-bit information (0, 0) ;

When the ACK/NACK response result of the primary carrier is NACK, and the ACK/NACK response result of the secondary carrier is ACK, the second state information is determined, and the second state information is mapped to 2-bit information (0, 1 ) ;

When the ACK/NACK response result of the primary carrier is ACK, and the ACK/NACK response result of the secondary carrier is NACK, it is determined as the third state information, and the third state information is mapped to the 2-bit information (1, 0) ;

When the ACK/NACK response result of the primary carrier is ACK, and the ACK/NACK response result of the secondary carrier is ACK, the fourth status information is determined, and the fourth status information is mapped to 2-bit information (1). 1 ) .

The method further includes:

When the primary carrier or the secondary carrier in the configured carrier includes two codeword streams, the corresponding

The ACK/NACK response result is the ACK/NACK response result after spatial logic and operation.

The other uplink control information is a scheduling request SR or channel state information CSI. The step of transmitting the 2-bit information and other uplink control information except the 2-bit information on a physical uplink control channel agreed with the base station includes:

When the other uplink control information is the SR, the terminal sends the 2-bit information to the physical uplink control channel corresponding to the SR after the QPSK modulation of the four-phase phase shift keying signal, where the physical corresponding to the SR The uplink control channel uses the format lb;

When the other uplink control information is CSI, the terminal sets the 2-bit information in the CSI. And transmitting on the corresponding physical uplink control channel, where the physical uplink control channel corresponding to the CSI is in the format 2/2b.

The method further includes: when the physical uplink control channel corresponding to the CSI uses a conventional cyclic prefix, the second reference of each slot of the physical uplink control channel format 2b after the 2-bit information is QPSK-modulated Send on the signal;

And when the physical uplink control channel corresponding to the CSI uses the extended cyclic prefix, the 2-bit information is jointly encoded with the CSI, and then sent on the physical uplink control channel format 2.

The invention also discloses a transmission method of uplink control signaling, the method comprising:

The terminal determines, according to the correct/error ACK/NACK response message of the N physical downlink shared channel PDSCHs to be fed back, the response result information used to indicate the configured carrier response, and the determined response result information and the channel state information CSI are agreed with the base station. Good physical uplink control channel is sent.

The step of determining, by the terminal, the response result information for indicating the configured carrier response according to the ACK/NACK response message of the N PDSCHs to be fed back includes:

The ACK/NACK response message of the N PDSCHs to be fed back a total of M bits, the CSI is periodic channel state information, and the number of periodic channel state information is Y, and the transmission bit of the physical uplink control channel agreed by the terminal and the base station is the largest. Is X bits;

If the terminal judges (M + ≤ JT ), the ACK/NACK response message of the Μ bit is determined as the response result information indicating the configuration of the carrier response.

The method also includes:

If the terminal determines; T < (M + , the ACK/NACK response messages of the N PDSCHs to be fed back are spatially logically AND, respectively, and determined as W response messages;

If the terminal determines (y + ) ≤, the W response messages are determined as response result information for indicating a configuration of the carrier response;

If the terminal judges < + ), then N PDSCH will be set according to the set mapping relationship.

The ACK/NACK response message is mapped to 2-bit information, and the 2-bit information is determined as response result information indicating the configuration of the carrier response.

The invention also discloses a terminal, the terminal comprising: a state information determining module and a mapping module And a sending module, wherein:

The status information determining module is configured to: determine, according to a correct/error ACK/NACK response message of the N physical downlink shared channels PDSCH to be fed back, status information indicating a response of the configured carrier;

The mapping module is configured to: map the state information determined by the state information determining module to 2-bit information according to the set mapping relationship;

The sending module is configured to: send the 2-bit information mapped by the mapping module and other uplink control information except the 2-bit information on a physical uplink control channel agreed with the base station.

Among them, in the frequency division duplex system, 1 < N ≤ 5;

In a time division duplex system, 1 < N ≤ 20.

The status information determining module includes a logical AND operation sub-module and a determining module, where: the logical and operational sub-module is configured to: the N PDSCHs to be fed back

The ACK/NACK response message is logically and operated;

The determining module is configured to: when the logical AND operation result obtained by the logic and operation sub-module is NACK, determine a result of the logical AND operation as the state information; when the logic and the operation sub-module obtain a logical AND When the operation result is ACK, the result of the logical AND operation and the number of ACKs performing the logical AND operation are determined as the status information; or the result of the logical AND operation and the detected number of PDSCHs are determined as the status information.

The status information determining module is further configured to:

When the logical and operation result of the ACK/NACK response message of the N PDSCHs is NACK, or the terminal detects that the downlink allocation loss has occurred, it is determined as the first state information;

When the logical AND operation result of the ACK/NACK response message of the N PDSCHs is ACK, and the number of logical AND operations ACKs is 1, 4, 7, 10, 13, 16, or 19, it is determined as the second state information;

The ACK/NACK response message logic and operation result of the N PDSCHs are ACK, When the number of logic and operation ACKs is 2, 5, 8, 11, 14, 17, 20, it is determined as the third state information;

When the logical AND operation result of the ACK/NACK response message of the N PDSCHs is ACK, and the number of logical AND operations ACKs is 3, 6, 9, 12, 15, 18, it is determined as the fourth state information; the mapping module And being further configured to: map the first state information to

2-bit information (0,0), mapping the second state information into 2-bit information (0,1), mapping the third state information into 2-bit information (1,0), and the fourth Status information is mapped to 2 bits of information ( 1,1 ) ₀

The status information determining module is further configured to: determine, as the ACK/NACK response result corresponding to the primary carrier of the N configuration carriers to be fed back, and the ACK/NACK response result corresponding to the predefined secondary carrier, The status information.

The status information determining module is further configured to:

When the ACK/NACK response result of the primary carrier is NACK, and the ACK/NACK response result of the secondary carrier is NACK, it is determined as the first state information;

When the ACK/NACK response result corresponding to the primary carrier is NACK, and the ACK/NACK response result corresponding to the secondary carrier is ACK, the second status information is determined;

When the ACK/NACK response result corresponding to the primary carrier is ACK, and the ACK/NACK response result corresponding to the secondary carrier is NACK, the third status information is determined;

When the ACK/NACK response result corresponding to the primary carrier is ACK, and the ACK/NACK response result corresponding to the secondary carrier is ACK, the fourth status information is determined;

The mapping module is further configured to: map the first state information into 2-bit information (0, 0) according to the set mapping relationship, and map the second state information into 2-bit information (0, 1) And mapping the third state information into 2-bit information (1, 0), and mapping the fourth state information into 2-bit information (1, 1).

The status information determining module is further configured to: when the primary carrier or the secondary carrier in the configured carrier includes two codeword flows, perform space by using an ACK/NACK response message corresponding to the two codeword flows. The logical AND operation determines the spatial logic and the operation result as the ACK/NACK response result corresponding to the carrier. The invention also discloses a base station, comprising: a mapping module and a judgment parsing module, wherein:

The mapping module is configured to: map 2-bit information received from the terminal side into status information indicating a response of the terminal configuration carrier according to the set mapping relationship;

The determining and parsing module is configured to: re-transmit all the scheduled PDSCHs when the terminal does not correctly receive all the physical downlink shared channel PDSCHs according to the state information mapped by the mapping module.

At least one embodiment of the present invention may enable the transmission of multiple ACK/NACKK response messages and other uplink control information. BRIEF abstract

FIG. 1 is a schematic diagram of a PUCCH format 1/la/lb when a conventional cyclic prefix is used for a subframe in an existing LTE system;

2 is a schematic diagram of a PUCCH format 2/2a/2b when a conventional cyclic prefix is used for a subframe in an existing LTE system;

FIG. 3 is a schematic diagram of a PUCCH format 3 when a conventional cyclic prefix is used for a subframe in an existing LTE system;

4 is a flowchart of transmitting uplink control signaling in Embodiment 1 of the present invention;

5 is a schematic diagram of a scenario in which a base station configures four downlink component carriers for a terminal in an FDD system; FIG. 6 is a schematic diagram of a UE detecting three PDSCHs in the scenario shown in FIG. 5;

7 is a schematic diagram of the UE detecting two PDSCHs in the scenario shown in FIG. 5;

8 is a schematic diagram of a scenario in which a base station configures four downlink component carriers for a terminal in a TDD system; FIG. 9 is a schematic diagram of a UE missing PDSCH in the scenario shown in FIG. 8;

FIG. 10 is a schematic diagram of a scenario in which a base station configures four downlink component carriers for a terminal according to Embodiment 2 of the present invention; FIG.

11 is a scenario diagram of a base station configuring three downlink component carriers for a terminal according to Embodiment 3 of the present invention; Intention. Preferred embodiment of the invention

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

Example 1

In a multi-carrier system with a large bandwidth, the correct/error ACK/NACK response message of the N physical downlink shared channel PDSCH that the terminal needs to feed back can be transmitted as follows. The transmission process shown in FIG. 4 includes the following steps:

Step 100: Determine, according to the N ACK/NACK response messages that need to be fed back, status information indicating a response of the configured carrier.

Wherein, Ν is the sum of the PDSCH including the downlink allocation signaling detected by the terminal and the PDSCH without the downlink allocation signaling, and N is a positive integer; in the frequency division duplex system, 1 < N ≤ 5, in the time division double In the system, 1 < N ≤ 20.

In this embodiment, the N ACK/NACK response messages may be determined as a status information indicating a response to the configured carrier as follows:

When the logical AND operation result of the N PDSCH ACK/NACK response message is NACK, it is determined as state 1;

When the logical AND operation result of the ACK/NACK response message of the N PDSCHs is ACK, and the number of logical AND operations ACKs (or the number of PDSCHs detected (or received) by the UE) is 1, it is determined as state 2;

When the logical AND operation result of the ACK/NACK response message of the N PDSCHs is ACK, and the number of logical AND operations ACKs (or the number of PDSCHs detected (or received) by the UE) is 2, it is determined as state 3;

And so on, when the ACK/NACK response message of the N PDSCHs is logically ANDed as an ACK, and the number of logical AND operations ACKs (or the PDSCH detected (or received) by the UE) When the number is N, it is determined to be the state N+1.

Step 200: Map the determined state information into 2-bit information according to the set mapping relationship, and send the 2-bit information and other uplink control information on the physical uplink control channel agreed with the base station.

After mapping the status information to the corresponding 2-bit information, the 2-bit information may be transmitted on the physical uplink control channel agreed with the base station according to the transmission operation in the prior art.

In a preferred embodiment, when the mapping relationship is set, the ACK/NACK response message of the state 1, that is, the N PDSCHs, and the operation result are NACK, which are mapped to a 2-bit value. The remaining N states, that is, the ACK/NACK response message logic and the operation result of the N PDSCHs are ACK, but the number of logically and operational ACKs (or the number of PDSCHs detected or received by the UE) is different, and logic can be followed. Grouped with the number of ACKs of operations. A set of state information having a difference of the number of logical AND operation ACKs of 3 is mapped to the same 2 bit value, because the concept of the PD side failure detection of the terminal 3 consecutive times is small, and basically does not occur, thus, the base station If the two-bit value is received on the side, and the two states of the response state of the configured carrier on the terminal side are analyzed according to the mapping relationship, the scenes that have failed to receive the three consecutive times in the two scenarios can be excluded, and the carrier on the terminal side can be accurately determined. The response status. Specifically, the mapping relationship between each state information and 2-bit information can be as shown in Table 2.

Table 2 is a mapping table of N+1 states and 2 bits.

Logical and ACK/NACK response messages of N PDSCHs

Status number Operation result, number of ACKs for logic and operation 0 1)

(or the number of PDSCHs detected or received by the UE)

1 (NACK, any value) or DTX 0,0

2/5/8/11/14/17/20 ( ACK, 1/4/7/10/13/16/19 ) 0,1

3/6/9/12/15/18/21 ( ACK, 2/5/8/11/14/17/20 ) 1,0

4/7/10/13/16/19 ( ACK, 3/6/9/12/15/18 ) U The DTX in Table 2 indicates that the UE detects that a PDCCH is lost.

Taking the FDD system as an example, the base station configures four downlink component carriers for the terminal, that is, N is 4, as shown in FIG. 5, respectively, the primary downlink component carrier DL CC#0 and the secondary downlink component carrier DL CC#l/2/ 3, where DL CC is used for the transmission mode of 2 codeword streams, DL CC#2/3 uses the transmission mode of 1 codeword stream, and assumes that the current subframe schedules DL CC#0/l/ for the UE. 2/3 ;

Assuming that the UE detects 4 PDSCHs of DL CC#0/l/2/3, respectively, the codeword streams corresponding to each PDSCH are respectively detected, and a corresponding ACK/NACK response message is obtained. For DL CC#0/1, since 2 codeword streams, therefore, the corresponding ACK/NACK response message is a spatial logical and operational ACK/NACK response message, and the PDSCH of each component carrier passes the spatial logic and the operation ACK/NACK response message. Recorded as HARQ-ACK(O), HARQ-ACK(l), HARQ-ACK(2), HARQ-ACK(3), respectively;

If {HARQ-ACK(O), HARQ-ACK(1), HARQ-ACK(2), HARQ-ACK(3)} = {ACK, ACK, ACK, ACK}, then the ACK/NACK of these 4 PDSCHs The response message logic and the operation result are ACK, and the number of logical AND operation ACKs is 4, then the corresponding state information is determined to be state 1, and then table 2 is searched, and the state 1 is mapped to 2 bits of information, that is, 6 (0) ^(1) is (0,1), and then the 6(0), b(l) value is transmitted according to the prior art.

For example, if 6(0)^(1) is transmitted on the current subframe and SR needs to be sent, the UE first modulates 6(0) (1) = (0, 1) into 1 QPSK (quadrature phase shift key). Controlling the signal), and then using the PUCCH channel resource corresponding to the SR, placing the QPSK symbol on the symbol of the PUCCH channel corresponding to the SR for transmitting data, that is, the PUCCH channel structure shown in FIG. The format lb symbol index of each slot is 0, 1, 5, 6 corresponding to the symbol, and then transmitted with the reference signal to form a complete PUCCH channel.

The CSI needs to be sent while transmitting 6(0)^(1) on the current subframe, and the UE first modulates 6(0) (1) = (0, 1) to 1 when the current subframe uses the normal cyclic prefix. The QPSK symbols are then transmitted on the second reference signal of each time slot in the PUCCH channel corresponding to the CSI, that is, the index of each time slot of the PUCCH channel format 2b shown in FIG. 2 is 5 On the symbol, then send it out with the CSI.

The CSI needs to be sent while transmitting 6(0)^(1) on the current subframe, and when the current subframe uses the extended cyclic prefix, the UE first performs 6(0) (1) = (0, 1) with the CSI. Joint coding, then corresponding to the CSI PUCCH channel format 2 is transmitted.

Correspondingly, after the base station detects 6(0)^(1) = (0, 1), by looking up Table 2, it can be known that the UE does receive one or four PDSCHs, but considering that the UE loses 3 PDCCHs. The probability is very low, and the base station schedules 4 PDSCHs. Therefore, the base station can determine that the UE correctly receives 4 PDSCHs, that is, all PDSCHs are correctly received.

Compared with the existing LTE TDD scheme, if the UE feeds back 6(0), 6(1) = (0, 1), the base station side analysis may have the following two scenarios:

Scenario 1-1: The possible receiving scenario of the UE is that one PDSCH is correctly received, and the other three PDSCHs are not correctly received (or the PDSCH demodulation error occurs, or the PDCCH is lost);

Scenario 1-2: The UE has correctly received 4 PDSCHs.

For the solution in this embodiment, after the UE feeds back 6 (0)^(1) = (0, 1), the base station side analysis may have the following two scenarios:

Scenario 2-1: The possible receiving scenario of the UE is that one PDSCH is correctly received, and the remaining three PDCCHs are lost.

Scenario 2-2: The UE has correctly received 4 PDSCHs.

The occurrence probability of scenes 1-2 and 2-2 is equal, and for scene 2-1, the probability of occurrence is much smaller than scene 1-1. Therefore, after the scheme of this embodiment is used, the base station schedules 4 PDSCHs, and the base station receives 6(0)(1)=(0,1), then the base station can consider that all 4 PDSCHs are correctly received. Therefore, no retransmission is required, and for the existing LTE TDD scheme, retransmission may be required. Therefore, it can be seen that the scheme of this embodiment has a throughput performance gain relative to the existing LTE TDD scheme.

As shown in FIG. 6, it is assumed that the current subframe schedules DL CC#0/l/2 to the UE. When the UE detects DL CC#0/l/2—a total of three PDSCHs, and respectively detects the corresponding codeword streams, a corresponding ACK/NACK response message is obtained. For DL CC#0/1, since two codeword streams are included, the corresponding ACK/NACK response message is a spatial logical and operational ACK/NACK response message, and the PDSCH of each component carrier. The ACK/NACK response message after spatial logic and operation is separately recorded as HARQ-ACK(O), HARQ-ACK(l) and HARQ-ACK (2).

If {HARQ-ACK(O), HARQ-ACK(1), HARQ-ACK(2)} = {ACK, ACK, NACK}, the result of the logical AND operation is NACK, and then look up Table 2, which corresponds to state 1 The corresponding 2-bit information 6(0)(1) is (0,0).

For the base station, when detecting, it detects 6(0)(1)=(0,0). By looking up Table 2, it is known that the UE does not correctly receive all PDSCHs. At this time, the base station needs to Schedule for retransmission.

Taking FIG. 7 as an example, it is assumed that the current subframe schedules DLCC #0/l/2 to the UE. When the UE detects two PDSCHs of DL CC#0/2, respectively, the corresponding codeword stream is detected, and a corresponding ACK/NACK response message is obtained. For DL CC#0, since two codeword streams are included, the corresponding ACK/NACK response message is a spatial logical and operational ACK/NACK response message, and the PDSCH of each component carrier passes through spatial logic. The ACK/NACK response message after operation is recorded as HARQ-ACK(O) and HARQ-ACK, respectively.

If {HARQ-ACK(O), HARQ-ACK(l) } = {ACK, ACK}, the result of the logical AND operation is ACK, and the number of logical AND operations ACK is 2, then look up Table 2, Corresponding to state 3, the corresponding 2-bit information 6(0)^(1) is (1,0).

In this case, because the UE cannot determine whether there is a PDSCH lost, but the base station detects 6(0), b(l) = (1, 0) when detecting, by looking up Table 2, it is known that the UE correctly receives 2 The PDSCH is scheduled, and the base station schedules three PDSCHs. Therefore, the base station knows that the UE has one PDSCH lost. At this time, the base station needs to retransmit the previous scheduling.

As shown in FIG. 8, in the TDD system, the base station currently configures four downlink component carriers for the terminal, where DL CC#0 is the primary downlink component carrier, and DL CC#l/2/3 is the secondary downlink component carrier, where DL The CC mesh is a transmission mode of two codeword streams, and DL CC#2/3 is a transmission mode of one codeword stream, and it is assumed that the DL CC marrow/2 is scheduled for the UE on the subframe n, in the subframe n+ DL CC#0/l/2 is scheduled for the UE, DL CC#0/2 is scheduled for the UE in the subframe n+2, and DLCC#0/l/ is scheduled for the UE in the subframe n+3. 3.

In the TDD system, the DAI (Downlink Assignment Indicator) in the downlink allocation The control field indicates the number of allocated PDSCHs including the PDCCH that are allocated to the current subframe in the order of the downlink component carriers.

Assuming that the UE detects, a total of 3 PDSCHs are detected on the subframe n, and a total of 3 PDSCHs are detected in the subframe n+1, and a total of 3 PDSCHs are detected in the subframe n+1. A total of two PDSCHs of DL CC#0/2 are detected on the frame n+2, and three PDSCHs of DL CC#0/2/3 are detected on the subframe n+3, and the corresponding codeword streams are detected respectively. Obtaining the corresponding ACK/NACK response message, the PDSCH of each component carrier is subjected to spatial logic and operation ACK/NACK response message, and is classified as {HARQ-ACK(O), HARQ-ACK(l) and HARQ. - ACK (2), ―.... , HARQ-ACK (IO)}, a total of 11 ACK/NACK response messages; meanwhile, according to the DAI, the UE determines that no PDCCH loss has occurred.

If the 11 ACK/NAC response messages are all ACK, the result of the logical AND operation is ACK, and the number of logical AND operations ACK is 11, and the table 2 is checked, which corresponds to state 3, corresponding to 2 The bit information 6(0)^(1) is (1,0).

When the base station detects, it detects 6(0) (1)=(1,0). By looking up Table 2, it is known that the number of PDSCHs correctly received by the UE may be 2/5/8/11/14/17/20. The base station scheduling is to schedule 11 PDSCHs. Therefore, the base station can assume that the UE correctly receives all PDSCHs because the probability that the terminal continuously loses 3 PDCCHs can be ignored.

Taking the scenario shown in FIG. 8 as an example, if at least one of the 11 ACK/NAC response messages is NACK, the result of the logical AND operation is NACK, and the table 2 is checked, which corresponds to state 1, corresponding to 2-bit information b (0l b(\) is (0,0).

When the base station detects, it detects 6(0)(1)=(0,0). By looking up Table 2, it is known that the UE does not correctly receive all PDSCHs or PDCCH loss occurs. At this time, the base station needs to Schedule for retransmission.

The scenario shown in FIG. 8 is taken as an example. When the UE detects a subframe, as shown in FIG. 9, the UE does not receive the PDSCH on the DL CC#1 on the subframe #n+1; according to the DAI, the UE can determine the UE. The PDSCH on DL CC#1 on subframe #n+l is missed. Therefore, the result of the logical AND operation is NACK. According to Table 2, the corresponding state is 1, and the corresponding 2-bit information 6(0)^( 1) is (0,0).

When the base station detects, it detects 6(0) (1)=(0,0). By looking up Table 2, it is known that the UE is not full. The part correctly receives all PDSCHs or PDCCH loss occurs. At this time, the base station needs to retransmit all the schedules.

Example 2

In this embodiment, in a multi-carrier system with a large bandwidth, the terminal will need to feed back N PDSCHs.

The ACK/NACK corresponding to the primary downlink component carrier in the ACK/NACK response message performs spatial logical operation and performs spatial logic operation on the ACK/NACK corresponding to the other secondary downlink component carrier, and corresponds to the primary downlink component carrier. The ACK/NACK logic and the operation result and the ACK/NACK logical AND operation result corresponding to the secondary downlink component carrier are determined as status information indicating a response of the configuration carrier. Specifically, the status information is as follows:

State 1 : {NACK, NACK} ;

State 2: {NACK, ACK} ;

State 3 : {ACK, NACK} ;

State 4: {ACK, ACK} ;

In a preferred embodiment, the mapping relationship between the above four states and 2-bit is as shown in Table 3 below. Table 3 is a mapping table of 4 states and 2 bits.

Taking the scenario shown in FIG. 10 as an example, in the FDD system, the base station currently configures four downlink component carriers for the terminal, where DL CC#0 is the primary downlink component carrier, and DL CC#l/2/3 is the secondary downlink component carrier. Where DL CC is a transmission mode of 2 codeword streams, DL CC#2/3 is a transmission mode of 1 codeword stream, and it is assumed that the current subframe schedules DL CC#0/l/2 for the UE; DL CC#1 (SCC#1) is a secondary downlink component carrier that needs to be fed back ACK/NACK, which is agreed between the base station and the UE in this embodiment.

It is assumed that a total of three PDSCHs of DL CC#0/l/2 are detected when the UE detects, and the corresponding codeword stream is detected respectively, and a corresponding ACK/NACK response message is obtained. For DL CC#0/1, since 2 codeword streams, therefore, the corresponding ACK/NACK response message is a spatial logical and operational ACK/NACK response message, and the PDSCH of each component carrier passes the spatial logic and the operation ACK/NACK response message. Recorded as HARQ-ACK(O), HARQ-ACK(l) and HARQ-ACK(2), respectively.

With the solution of this embodiment, the UE only feeds back HARQ-ACK(O) and HARQ-ACK(1) corresponding to PCC and SCC#1, and therefore, when {HARQ-ACK(O), HARQ-ACK(l) } = {ACK, ACK } , look up table 3, which corresponds to state 4, and the corresponding 2-bit information 6(0)^(1) is (1,1).

When the base station detects, it detects 6(0) (1)=(1,1). By looking up Table 3, it knows that the UE correctly receives the PDSCH on PCC and SCC#1. Since the UE does not feed back the PDSCH reception condition on the SCC #2, in the present embodiment, the base station preferably performs scheduling only on the PCC and the pre-determined SCC. Or, in other words, the embodiment is more applicable to a scenario in which two downlink component carriers are aggregated. In this case, the UE can feed back the PDSCH reception of the two downlink component carriers without performing logical AND between carriers.

The solutions proposed in the above embodiments 1 and 2 may be used singly or in combination. For example, when the number of carriers configured by the base station for the terminal is 2, the solution of the foregoing Embodiment 2 is preferably used, and when the number of carriers configured by the base station for the terminal exceeds 2, the solution of Embodiment 1 is preferably used.

Example 3

The embodiment provides a method for transmitting uplink control signaling, and the terminal first determines, according to the ACK/NACK response message of the N PDSCHs to be fed back, the response result information used to indicate the configured carrier response, and the determined response result information and The CSI is transmitted on a physical uplink control channel agreed with the base station.

It is assumed that the ACK/NACK response messages of the N PDSCHs to be fed back occupy M bits, and the CSI is periodic channel state information, and the number of periodic channel state information is Y, and the terminal and the base station agree. The transmission bit of the good physical uplink control channel is at most X bits. At this time, the process of determining, by the terminal, the response result information for configuring the carrier response according to the ACK/NACK response message of the N PDSCHs to be fed back is as follows:

The terminal determines whether (M + ≤ JT , if yes, determines the ACK/NACK response message of the Μ bit as the response result information; if not, the ACK/NACK response message of the PDSCH to be fed back by the terminal respectively Perform spatial logic and operation, determine W reply messages, and then judge whether +) ≤. If yes, the terminal determines the W response messages as response result information; otherwise, the terminal will set one PDSCH according to the set mapping relationship. The ACK/NACK response message is mapped to 2-bit information, and the 2-bit information is determined as the response result information.

The mapping relationship may be as shown in Table 2 or Table 3 above, and is of course not limited to the mapping relationship shown in Table 2 and Table 3.

For example, in an FDD system, a base station currently configures three downlink component carriers for a terminal, as shown in FIG. 11, where DL CC#0 is a primary downlink component carrier, and DL CC#l/2 is a secondary downlink component carrier, where DL CC The medulla is a transmission mode of two codeword streams, and DL CC#2 is a transmission mode of one codeword stream, and it is assumed that the current subframe schedules DL CC#0/l/2 to the UE. And the PUCCH Format 2 transmission bit is up to 13 bits, that is, X is equal to 13.

If the UE detects 3 PDSCHs of DL CC#0/l/2, and then respectively detects the corresponding codeword stream, and obtains a corresponding ACK/NACK response message. For DL CC#0/1, both are included. The number of codeword streams, the corresponding 3 PDSCH ACK/NACK response messages are HARQ-ACK O), HARQ-ACK(l), HARQ-ACK(2), HARQ-ACK(3) and HARQ-ACK(4) At this time, the ACK/NACK response messages of the three PDSCHs occupy a total of 5 bits, that is, M=5.

The ACK/NACK response message of the DL CC#0/1 is spatially logically operated. The ACK/NACK response messages of the three PDSCHs are respectively recorded as Bundling-HARQ-ACK(O), Bundling-HARQ-ACK(l). , Bundling-HARQ-ACK(2), at this time, W is equal to 3.

When the period CSI requiring feedback is 11 bits, that is, Y is equal to 11, the terminal judges that since + 7 = 5 + ll > 13 , ^? (M + Y) > X, it is judged that + = 3 + 11 > 13 , ^ X < {Y + W) , therefore, the UE maps the ACK/NACK response messages of the three PDSCHs according to the set mapping relationship to 2-bit information 6(0)^(1), and then the 2-bit information 6 (0) ^ (1) and 11-bit period CSI may be transmitted on a physical uplink control channel agreed with the base station. When the period CSI requiring feedback is 10 bits, that is, Y is equal to 10, the terminal judges that the terminal judges that since M + y = 5 + 10>13 , ^?(Μ + Υ)>Χ, it is judged that += 3 + 10 = 13, ie +; r = , therefore, the UE transmits the spatial logic and the processed W (ie, 3) response messages and the 10-bit period CSI on the physical uplink control channel agreed with the base station.

When the period CSI requiring feedback is 4 bits, that is, Y is equal to 4, the terminal judges that + 7 = 5 + 4<13, ^?(Μ + Υ)<Χ, therefore, the UE will have M bits (ie, 5 bits). The response message and the 4-bit period CSI are transmitted on the physical uplink control channel agreed with the base station.

When the base station detects, it decodes according to the number of periodic CSI bits, and obtains the corresponding periodic CSI and the ACK/NACK response message of the PDSCH received by the UE.

Example 4

The embodiment provides a terminal, where the terminal includes: a status information determining module,

Wherein, Ν is the sum of the PDSCH including the downlink allocation signaling detected by the terminal and the PDSCH without the downlink allocation signaling, and N is a positive integer; in the frequency division duplex system, 1<N ≤ 5; In the system, 1 < N ≤ 20.

Specifically, the status information determining module includes: a logical AND operation submodule, a determining module, a mapping module, and a sending module, where:

The logic and operation sub-module is configured to: logically AND operate an ACK/NACK response message of N PDSCHs to be fed back;

The determining module is configured to: when the logical AND operation result obtained by the logic and the operation sub-module is NACK, determine a result of the logical AND operation as the status information;

When the logical AND operation result obtained by the logic and the operation sub-module is ACK, the result of the logical AND operation and the number of ACKs performing the logical AND operation are determined as the status information; or the result of the logical AND operation is detected The number of PDSCHs is determined as the status information. The mapping module is configured to: determine the state information determining module according to the set mapping relationship The determined status information is mapped to 2-bit information;

The set mapping relationship may be as shown in Table 2 or Table 3 above, and is of course not limited to Table 2 or Table 3. The sending module is configured to: send the 2-bit information mapped by the mapping module and other uplink control information on a physical uplink control channel agreed with the base station.

In a preferred embodiment, the status information determining module is further configured to: determine, when the ACK/NACK response message of the N PDSCHs is a NACK, or the terminal detects that a downlink allocation loss has occurred, determining the first state Information

When the logical AND operation result of the ACK/NACK response message of the N PDSCHs is ACK, and the number of logical AND operations ACKs is 2, 5, 8, 11, 14, 17, 20, it is determined as the third status information;

When the logical AND operation result of the ACK/NACK response message of the N PDSCHs is ACK, and the number of logical AND operations ACKs is 3, 6, 9, 12, 15, 18, it is determined as the fourth state information; the mapping module Further configured to: map the first state information into 2-bit information (0, 0) according to a set relationship, and map the second state information into 2-bit information (0, 1), status information is mapped to three 2-bit information (1,0), the state information is mapped to a fourth 2-bit information (1,1) ₀

In some embodiments, when N is 2, the state information determining module is further configured to: ACK/NACK response result corresponding to the primary carrier of the two configuration carriers to be fed back, and corresponding to the secondary carrier The ACK/NACK response result is determined as the status information. Wherein, when one of the two configuration carriers includes two codeword streams, the state information determining module performs spatial logic and operation on the ACK/NACK response message corresponding to the two codeword streams, and the space is The logical AND operation result is determined as the ACK/NACK response result corresponding to the carrier.

The status information determining module is further configured to: when the ACK/NACK response result corresponding to the primary carrier is NACK, and the ACK/NACK response result corresponding to the secondary carrier is NACK, the first status information is determined; When the ACK/NACK response result corresponding to the primary carrier is NACK, and the ACK/NACK response result corresponding to the secondary carrier is ACK, the second status information is determined;

Example 5

The embodiment provides a base station, including: a mapping module and a judgment parsing module, where: the mapping module is configured to: map 2-bit information received from the terminal side into a carrier for indicating terminal configuration according to the set mapping relationship. Status information of the response;

The determining and parsing module is configured to: re-transmit all the scheduled PDSCHs when determining that all the PDSCHs are not correctly received by the terminal according to the state information mapped by the mapping module.

The mapping relationship is set by the terminal and the base station in advance. The mapping relationship may be as shown in Table 2 or Table 3, and is of course not limited to Table 2 or Table 3.

Through the above embodiments, we can see that after the method of the present invention is used, the problem that the response message, the scheduling request, and the channel state information of multiple downlink component carriers are simultaneously transmitted is effectively solved.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention. Industrial Applicability The present invention provides a method for transmitting uplink control signaling, a terminal, and a base station, which can enable a terminal in a multi-carrier system with a large bandwidth to send an ACK/NACK response message and other uplink control information to a base station, which is strong. Industrial applicability.

Claims

Claim

1. A method for transmitting uplink control signaling, the method comprising:

2. The transmission method of claim 1, further comprising:

Receiving, by the base station, the 2-bit information, determining status information corresponding to the 2-bit information according to the set mapping relationship, and determining, when the determined status information indicates that all the PDSCHs are not correctly received by the terminal, Retransmit.

3. The transmission method according to claim 1, wherein

The N is the sum of the PDSCH including the downlink allocation signaling detected by the terminal and the PDSCH having no downlink allocation signaling, where N is a positive integer;

Among them, in the frequency division duplex system, 1 < N ≤ 5;

In a time division duplex system, 1 < N ≤ 20.

The transmission method according to claim 1, 2 or 3, wherein the determining, by the terminal, the status information indicating the response of the configuration carrier according to the ACK/NACK response message of the N PDSCHs to be fed back includes:

When the logical AND operation result is ACK, the result of the logical AND operation and the detected number of PDSCHs are determined as the status information. 5. The transmission method according to claim 4, wherein the step of mapping the determined state information into 2-bit information according to the set mapping relationship comprises:

When the logical AND operation result of the ACK/NACK response message of the N PDSCHs is ACK, the number of logical AND operations ACKs is 2.

5, 8, 11, 14, 17, 20, determined as the third state information, the third state information is mapped to 2 bits of information (1,0);

When the ACK/NACK response message logical AND operation result of the N PDSCHs is ACK, and the number of logical AND operations ACKs is 3, 6, 9, 12, 15, 18, it is determined as the fourth status information, and the fourth status is determined. The status information is mapped to 2-bit information (1, 1).

The transmission method according to claim 1, 2 or 3, wherein the determining, by the terminal, the status information indicating the response of the configuration carrier according to the ACK/NACK response message of the N PDSCHs to be fed includes:

7. The transmission method according to claim 6, wherein the step of mapping the determined state information into 2-bit information according to the set mapping relationship comprises:

When the ACK/NACK response result of the primary carrier is NACK, and the ACK/NACK response result of the secondary carrier is ACK, the second state information is determined, and the second state information is mapped to 2-bit information (0, 1 ) ; When the ACK/NACK response result of the primary carrier is ACK, and the ACK/NACK response result of the secondary carrier is NACK, it is determined as the third state information, and the third state information is mapped to the 2-bit information (1, 0) ;

8. The transmission method according to claim 7, wherein the method further comprises:

When the primary carrier or the secondary carrier in the configuration carrier includes two codeword streams, the corresponding ACK/NACK response result is an ACK/NACK response result after spatial logic and operation.

9. The transmission method according to claim 1, wherein

The other uplink control information is a scheduling request SR or channel state information CSI.

The transmission method according to claim 9, wherein the step of transmitting the 2-bit information and other uplink control information except the 2-bit information on a physical uplink control channel agreed with the base station comprises:

When the other uplink control information is the CSI, the terminal sends the 2-bit information on the physical uplink control channel corresponding to the CSI, where the physical uplink control channel corresponding to the CSI is in the format 2/2b. .

11. The transmission method of claim 10, further comprising:

When the physical uplink control channel corresponding to the CSI uses a conventional cyclic prefix, the 2-bit information is QPSK-modulated and sent on a second reference signal of each time slot of the physical uplink control channel format 2b.

When the physical uplink control channel corresponding to the CSI uses the extended cyclic prefix, the 2-bit information is jointly encoded with the CSI, and then transmitted on the physical uplink control channel format 2.

12. A method for transmitting uplink control signaling, the method comprising:

The transmission method according to claim 12, wherein the determining, by the terminal, the response result information indicating the configuration of the carrier response according to the ACK/NACK response message of the N PDSCHs to be fed back comprises:

14. The transmission method of claim 13, further comprising:

If the terminal determines (y+) ≤, the W response messages are determined as response result information indicating that the carrier response is configured;

If the terminal judges < + ), the ACK/NACK response message of the PDSCHs is mapped to 2-bit information in accordance with the set mapping relationship, and the 2-bit information is determined as the response result information indicating the configuration carrier response.

15. A terminal, the terminal comprising: a status information determining module, a mapping module, and a sending module, where:

The mapping module is configured to: determine the state information determining module according to the set mapping relationship The determined status information is mapped to 2-bit information;

16. The terminal of claim 15, wherein

Among them, in the frequency division duplex system, 1 < N ≤ 5;

In a time division duplex system, 1 < N ≤ 20.

The terminal according to claim 15 or 16, wherein the status information determining module comprises a logical AND operation sub-module and a determining module, wherein: the logical and operational sub-module is configured to:: N PDSCHs to be fed back ACK/NACK response message for logical AND operation;

The terminal according to claim 17, wherein the status information determining module is further configured to: when the ACK/NACK response message logic and the operation result of the N PDSCHs are NACK, or the terminal detects that a downlink allocation loss has occurred , determined as the first state information;

When the logical AND operation result of the ACK/NACK response message of the N PDSCHs is ACK, and the number of logical AND operations ACKs is 2, 5, 8, 11, 14, 17, 20, it is determined as the third status information; When the logical AND operation result of the ACK/NACK response message of the N PDSCHs is ACK, and the number of logical AND operations ACKs is 3, 6, 9, 12, 15, 18, it is determined as the fourth state information; the mapping module Further configured to: map the first state information into 2-bit information (0, 0) according to a set relationship, and map the second state information into 2-bit information (0, 1), status information is mapped to three 2-bit information (1,0), the state information is mapped to a fourth 2-bit information (1,1) ₀

The terminal according to claim 15 or 16, wherein the status information determining module is further configured to: ACK/NACK response result corresponding to a primary carrier of the N configuration carriers to be fed back, and a predefined The ACK/NACK response result corresponding to the secondary carrier is determined as the status information.

The terminal according to claim 19, wherein the status information determining module is further configured to: the ACK/NACK response result corresponding to the primary carrier is NACK, and the ACK/NACK response result of the secondary carrier is When NACK, it is determined as the first state information;

The terminal according to claim 20, wherein the status information determining module is further configured to: when the primary carrier or the secondary carrier in the configured carrier includes 2 codeword streams, the 2 codes The ACK/NACK response message corresponding to the word stream performs spatial logic and operation, and determines the spatial logic and the operation result as the ACK/NACK response result corresponding to the carrier.

A base station, the base station includes: a mapping module and a judgment parsing module, where: the mapping module is configured to: map 2-bit information received from the terminal side to be used to indicate a terminal configuration carrier according to the set mapping relationship Status information of the response;