CN102208968B - The sending method of a kind of correct/error response message and realize terminal - Google Patents

Abstract

The invention discloses the sending method of a kind of correct/error response message and realize terminal, configure multiple Serving cell and use the terminal of PUCCH format 3 feeding back ACKs/NACK for solving, when receiving only the PDSCH of main Serving cell, the how problem of feeding back ACK/NACK.When terminal receives only the PDSCH of autonomous Serving cell, terminal uses the ACK/NACK response message feedback mode configured when only configuring a Serving cell to feed back the ACK/NACK response message corresponding with the PDSCH of main Serving cell；Or when terminal receives only the PDSCH of autonomous Serving cell, described terminal uses the ACK/NACK response message that ACK/NACK binding mode feedback is corresponding with the PDSCH of main Serving cell；Or terminal uses the ACK/NACK response message that ACK/NACK multiplex mode feedback is corresponding with the PDSCH of main Serving cell.

Description

Method for sending correct/wrong response message and implementation terminal

Technical Field

The present invention relates to the field of communications, and in particular, to a method for sending an Acknowledgement/Negative Acknowledgement (ACK/NACK) message in a time division duplex system using a carrier aggregation technology, and a terminal for implementing the method.

Background

In a Hybrid Automatic Repeat Request (HARQ) mode, a codeword sent by a sending end not only can detect an error, but also has a certain error correction capability. After receiving the code word, the decoder at the receiving end firstly checks the error condition, if the error condition is within the error correction capability of the code word, the error correction is automatically carried out, if the error condition is too many, the error condition exceeds the error correction capability of the code word, but the error condition can be detected, the receiving end sends a judgment signal to the sending end through a feedback channel, and the sending end is required to resend information. In an Orthogonal Frequency Division Multiplexing (OFDM) system, a correct/error response message is used to indicate whether transmission is correct/incorrect, so as to determine whether retransmission is required.

In a Long Term Evolution (LTE, the corresponding standard protocol is Rel-8/9) system, the ACK/NACK response message may be sent on a Physical Uplink Control Channel (PUCCH) alone, or may be sent together with data on a Physical Uplink Shared Channel (PUSCH).

In a Frequency Division Duplex (FDD) system, because uplink and Downlink subframes are in one-to-one correspondence, when a Physical Downlink Shared Channel (PDSCH) only contains one code stream, the UE needs to feed back a 1-bit ACK/NACK response message, when the PDSCH contains two code streams, the UE needs to feed back a 2-bit ACK/NACK response message, and when the UE does not have a PUSCH to send in a current subframe, the UE sends the 1-or 2-bit ACK/NACK response message on the PUCCH by using a format 1a/1 b; and when the UE has PUSCH transmission in the current subframe, the UE multiplexes the 1 or 2 bit information and data together after certain mapping from ACK/NACK state to corresponding bit, channel coding, scrambling and modulation, and then transmits the information on the PUSCH.

In a Time Division Duplex (TDD) system, because uplink and downlink subframes are not in one-to-one correspondence, that is, ACK/NACK response messages corresponding to a plurality of downlink subframes need to be sent on a PUCCH/PUSCH channel of one uplink subframe, a downlink subframe set corresponding to an uplink subframe constitutes a bundling window (bundling window). In LTE TDD, two ACK/NACK acknowledgement message feedback modes are defined: one is ACK/NACK bundling, as shown in fig. 1, the basic idea of the feedback mode is to perform a logical and operation on ACK/NACK messages of codeword streams corresponding to downlink subframes that need to be fed back in the uplink subframe, if PDSCH transmission of one downlink subframe includes 2 codeword streams, the UE needs to feed back 2-bit ACK/NACK response messages corresponding to each codeword stream that have undergone a sub-frame logical and operation, if PDSCH transmission of each subframe only has one codeword stream, the UE needs to feed back 1-bit ACK/NACK response messages corresponding to the codeword stream that have undergone a sub-frame logical and operation, and when the UE does not have a PUSCH to be sent in a current subframe, the UE sends the 1-bit or 2-bit ACK/NACK response messages on a PUCCH using a format 1a/1 b; and when the UE has PUSCH transmission in the current subframe, the UE multiplexes the 1 or 2-bit information and data together through certain channel coding and channel interleaving, and then transmits the information on the PUSCH. The other is an ACK/NACK multiplexing (ACK/NACK multiplexing) feedback mode, as shown in fig. 2, the feedback mode needs to feed back an ACK/NACK response message for each downlink subframe, multiple subframes need to feed back multiple ACK/NACK response messages, and when a PDSCH of a certain downlink subframe transmits 2 codeword streams, the ACK/NACK response message of each codeword stream is logically and-operated first, and finally each downlink subframe corresponds to only one ACK/NACK response message. When the UE has no PUSCH to send in the current subframe, the UE will send the multiple ACK/NACK response messages on the PUCCH by using format 1b joint channel selection (format 1b with channel selection), and the core idea of the method is to use different PUCCH channels and different modulation symbols on the PUCCH channels to represent different ACK/NACK response messages. The method enables the portable ACK/NACK response message to reach 4 bits at most by combining channel selection with a control channel format 1 b. When different uplink and downlink subframe configurations are defined in LTE, that is, when the uplink and downlink subframe configurations are 1: 2/3/4(M ═ 2/3/4), a mapping table (mapping table for short, which is distinguished from a mapping table of LTE-a described later, and which may also be referred to as a mapping table of LTE) is a mapping table between a state combination of ACK/NACK response messages and a selected PUCCH channel and 2-bit information b (0) b (1) carried on the PUCCH channel

And the UE adopts the ACK/NACK bundling or ACK/NACK multiplexing to feed back the ACK/NACK to be configured by a higher layer. The following discussion is directed to ACK/NACK being sent on PUCCH only.

In order to meet the requirements of the International telecommunications union-Advanced (ITU-Advanced), a Long Term Evolution-Advanced (Long Term Evolution-Advanced, LTE-a, corresponding to a standard protocol Rel-10) system as an Evolution standard of LTE needs to support a larger system bandwidth (up to 100MHz), and needs to be backward compatible with the existing standard of LTE. On the basis of the existing LTE system, the bandwidths of the LTE system can be combined to obtain a larger bandwidth, which is called Carrier Aggregation (CA) technology, and the technology can improve the spectrum utilization rate of the IMT-Advance system, alleviate the shortage of spectrum resources, and further optimize the utilization of the spectrum resources.

In a system in which carrier aggregation is introduced, a carrier to be aggregated is referred to as a Component Carrier (CC), which is also referred to as a Serving Cell. Meanwhile, the concept of Primary Component Carrier/Cell (PCC/PCell) and Secondary Component Carrier/Cell (SCC/SCell) is also proposed, and in a system with Carrier aggregation, at least one Primary serving Cell and one Secondary serving Cell are included, wherein the Primary serving Cell is always in an active state.

When LTE-a adopts a carrier aggregation technique, when a base station configures multiple downlink serving cells for a UE, the UE needs to feed back ACK/NACK response messages of corresponding codeword streams of the multiple downlink serving cells. In LTE-a, when an ACK/NACK response message is sent on a physical uplink control channel, two feedback modes are defined: PUCCH Format 1b joint channel selection (Format 1b with channel selection) and feedback mode based on DFT-s-OFDM are adopted. Since the feedback method based on DFT-s-OFDM has a different channel structure from that of PUCCH format 1/1a/1b/2/2a/2b, in the existing LTE-a protocol, such a structure is called PUCCH format 3(PUCCH format 3). For the UE configured with a plurality of serving cells, if the UE can only support ACK/NACK feedback of 4 bits at most, the UE feeds back the ACK/NACK by adopting a mode of PUCCH format 1b joint channel selection; if the UE can support ACK/NACK feedback with more than 4 bits, the base station further configures, through high-level signaling, whether the UE uses PUCCH format 1b joint channel selection or PUCCH format3 to feed back ACK/NACK.

For the PUCCH format 1b joint channel selection manner in LTE-a, different mapping tables are defined by the current protocol for the TDD system and the FDD system respectively, and are all different from the mapping tables of LTE, which are shown in fig. 3 to 9, respectively, where fig. 3 to 5 are mapping tables of LTE (corresponding to M ═ 2,3, 4, respectively), fig. 6 to 8 are mapping tables of LTE-a FDD system (corresponding to a ═ 2,3, 4, respectively, where a is the total number of transport blocks configured for the serving cell of the UE in the LTE-a FDD carrier aggregation system), and fig. 9 is a mapping table of LTE-a TDD system.

In an FDD system, when the UE is configured to feed back ACK/NACK by using the PUCCH format3, since the channel Resource used for transmitting the PUCCH format3 dynamically indicates which one/pair of 4 or 4 pairs configured by the UE at a higher layer (when the PUCCH format3 uses transmit diversity) is/are used according to an ACK/NACK Resource Indicator (ARI) on the Scell, when the UE only receives the PDSCH of the Pcell, the channel Resource of the PUCCH format3 is not available, and at this time, the protocol provides that the UE feeds back ACK/NACK by using PUCCH format 1a/1 b. When the UE feeds back ACK/NACK in a PUCCH format 1b combined channel selection manner, the mapping table for channel selection takes into account the transmission form, such as PUCCH format 1a/1b, if only the primary serving cell is received. Therefore, for the UE that feeds back ACK/NACK by using the PUCCH format 1b joint channel selection, the ACK/NACK feedback method always uses PUCCH format 1b joint channel selection, and no special processing is needed for the case where only the PDSCH of the PCell is received.

In the TDD system, when the UE has only one serving cell (same as LTE Rel-8/9), the base station needs to further indicate whether the UE uses ACK/NACK bundling or ACK/NACK multiplexing to feed back ACK/NACK through higher layer signaling. When the UE configures multiple serving cells, the UE will use PUCCH format 1b joint channel selection or PUCCH format3 to feed back ACK/NACK. When a plurality of serving cells are configured and the UE that feeds back ACK/NACK by using PUCCH format3 is configured, how to feed back ACK/NACK is an urgent problem to be solved when the UE only receives the PDSCH of the Pcell.

In addition, in consideration of introducing multiple antennas in the uplink of LTE-a, PUCCH adopts Spatial Orthogonal Resource Transmit Diversity (SORTD) as its Transmit Diversity scheme, and it is also specified that whether different PUCCH formats adopt Transmit Diversity is configured independently, that is, the Transmit Diversity schemes of PUCCH format 1a/1b and PUCCH format3 may be different. Therefore, when the transmission diversity scheme of the PUCCH format3 is not consistent with the transmission scheme of the PUCCH format 1a/1b, when only the PDSCH of the Pcell is received and the UE will use the PUCCH format 1a/1b for feedback, what multi-antenna transmission scheme the UE uses to feed back ACK/NACK is also an issue to be solved.

Disclosure of Invention

In view of the above, the present invention provides a method and a terminal for sending an ACK/NACK response message in a time division duplex system, which are used to solve the technical problem of how to feed back ACK/NACK when only receiving a PDSCH from a main serving cell by a terminal configured with a plurality of serving cells and adopting PUCCH format3 to feed back ACK/NACK in the time division duplex system.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a method for sending correct/error (ACK/NACK) response messages in a time division duplex system is suitable for a terminal which is configured with a plurality of service cells and feeds back the ACK/NACK response messages by adopting a Physical Uplink Control Channel (PUCCH) format3, and when the terminal only receives a Physical Downlink Shared Channel (PDSCH) from a main service cell, the terminal feeds back the ACK/NACK response messages corresponding to the PDSCH of the main service cell by adopting one of the following modes:

mode 1, the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the primary serving cell in an ACK/NACK response message feedback mode configured when only one serving cell is configured.

In the mode 1, when the terminal configures only one serving cell, the configured ACK/NACK response message feedback mode is an ACK/NACK bundling (ACK/NACK bundling) mode, and when the terminal receives only the PDSCH from the serving cell, the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the serving cell in the ACK/NACK bundling mode;

in the method 1, when the ACK/NACK response message feedback method configured by the terminal when only one serving cell is configured is an ACK/NACK multiplexing (ACK/NACK multiplexing) method, the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the primary serving cell in the ACK/NACK multiplexing method when the terminal receives only the PDSCH from the primary serving cell.

Mode 2, the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main service cell by adopting an ACK/NACK binding mode;

and the mode 3 is that the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the main service cell by adopting an ACK/NACK multiplexing mode.

And 4, when the terminal only receives the PDSCH from the main serving cell, the terminal adopts the PUCCH format3 to feed back the ACK/NACK response message, wherein when the PUCCH format3 channel resource index corresponding to the PUCCH format3 is determined, the value of the ACK/NACK resource indicator (ARI) is a default value or a value configured by a high layer agreed by the terminal and the base station.

Further, the application scenario of the method is TDD system uplink and downlink configuration 5.

Further, based on the mode 1 and the mode 2, when the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the primary serving cell in an ACK/NACK bundling mode: and the ACK/NACK binding mode adopts PUCCH format 1a/1b to send the ACK/NACK response message.

Further, based on the mode 1 and the mode 3, when the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the primary serving cell in an ACK/NACK multiplexing mode: the ACK/NACK multiplexing mode is a mode of PUCCH format 1b combined channel selection.

The mapping relationship table between the state combination { HARQ-ACK (i) ═ 0,1,2,3} of the ACK/NACK response message in the PUCCH format 1b joint channel selection mode, the channel index of the selected PUCCH format 1b, and the 2-bit information b (0) b (1) carried on the channel is a mapping table defined by LTE or a mapping table defined by LTE-a.

Further, based on the mode 1 and the mode 2, when the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the primary serving cell in an ACK/NACK bundling manner, the terminal will send the ACK/NACK using one of the following multi-antenna transmission schemes:

in the multi-antenna transmission scheme 1, if a Spatial Orthogonal Resource Transmit Diversity (SORTD) activation configuration parameter of a PUCCH format3 is ON (ON), the terminal transmits the ACK/NACK response message ON the PUCCH format 1a/1b in a SORTD manner, and if the SORTD activation configuration parameter of the PUCCH format3 is OFF (OFF), the terminal transmits the ACK/NACK response message ON the PUCCH format 1a/1b in a single antenna transmission mode.

In the multi-antenna transmission scheme 2, if the SORTD activation configuration parameter of the PUCCH format 1a/1b is ON, the terminal sends the ACK/NACK response message ON the PUCCH format 1a/1b in an SORTD mode; and if the PUCCH format 1a/1b SORTD activation configuration parameter is OFF, the terminal sends the ACK/NACK response message on the PUCCH format 1a/1b by adopting a single-antenna transmission mode.

Further, based on the mode 1 and the mode 3, when the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the primary serving cell in an ACK/NACK multiplexing mode, the terminal transmits the ACK/NACK response message in a single antenna transmission mode in a PUCCH format 1b joint channel selection mode.

Based on the method provided by the invention, the invention also provides a terminal for realizing the method, the terminal is configured with a plurality of service cells and configured to feed back ACK/NACK response messages by adopting PUCCH format3, and when the terminal only receives the PDSCH from the main service cell, the terminal feeds back the ACNK/ACK response messages corresponding to the PDSCH of the main service cell by adopting the ACK/NACK feedback mode configured when only one service cell is configured; or feeding back an ACK/NACK response message corresponding to the PDSCH of the main service cell by adopting an ACK/NACK binding mode; or feeding back an ACK/NACK response message corresponding to the PDSCH of the main service cell by adopting an ACK/NACK multiplexing mode; or when determining the PUCCH format3 channel resource index corresponding to the PUCCH format3, the ACK/NACK resource indication symbol takes a default value agreed by the terminal and the base station.

Further, when the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the primary serving cell in an ACK/NACK feedback manner configured when only one serving cell is configured:

if the ACK/NACK response message feedback mode configured when only one service cell is configured is an ACK/NACK binding mode, the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the main service cell by adopting the ACK/NACK binding mode when only the PDSCH of the main service cell is received;

if the ACK/NACK response message feedback mode configured when only one serving cell is configured is an ACK/NACK multiplexing mode, the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main serving cell in an ACK/NACK multiplexing mode when receiving only the PDSCH of the main serving cell.

Further, when the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the primary serving cell in an ACK/NACK bundling manner, the ACK/NACK bundling manner transmits the ACK/NACK response message in a PUCCH format 1a/1 b;

and when the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the main service cell in an ACK/NACK multiplexing mode, the ACK/NACK multiplexing mode is a mode of PUCCH format 1b combined channel selection.

Further, when the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the primary serving cell in an ACK/NACK bundling manner:

and if the SORTD activation configuration parameter of the PUCCH format3 is ON, the terminal sends the ACK/NACK response message ON the PUCCH format 1a/1b in a SORTD mode, and if the SORTD activation configuration parameter of the PUCCH format3 is OFF, the terminal sends the ACK/NACK response message ON the PUCCH format 1a/1b in a single-antenna transmission mode.

If the SORTD activation configuration parameter of the PUCCH format 1a/1b is ON, the terminal sends the ACK/NACK response message ON the PUCCH format 1a/1b in an SORTD mode; and if the PUCCH format 1a/1b SORTD activation configuration parameter is OFF, the terminal sends the ACK/NACK response message on the PUCCH format 1a/1b by adopting a single-antenna transmission mode.

Further, when the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the primary serving cell in an ACK/NACK multiplexing manner, the terminal transmits the ACK/NACK response message in a single antenna transmission manner in a PUCCH format 1b joint channel selection manner.

The method and the device for sending the ACK/NACK response message are suitable for a terminal which is configured with a plurality of service cells and adopts PUCCH format3 to feed back the ACK/NACK in a time division duplex system, and realize the technical problem of feeding back the ACK/NACK when only receiving a downlink physical shared channel (PDSCH) from a main service cell.

Drawings

FIG. 1 is a diagram illustrating an ACK/NACK bundling mode;

FIG. 2 is a schematic diagram of ACK/NACK multiplexing mode;

fig. 3 is a mapping table when M is 2 in an LTE TDD system;

fig. 4 is a mapping table when M is 3 in an LTE TDD system;

fig. 5 is a mapping table when M is 4 in an LTE TDD system;

fig. 6 is a mapping table when a is 2 in an LTE-a FDD system;

fig. 7 is a mapping table when a is 3 in an LTE-a FDD system;

fig. 8 is a mapping table when a is 4 in an LTE-a FDD system;

fig. 9 is a mapping table in an LTE-a TDD system;

fig. 10 is a schematic diagram illustrating that a terminal feeds back an ACK/NACK response message corresponding to a PDSCH of a primary serving cell in an ACK/NACK bundling manner according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a terminal feeding back an ACK/NACK response message corresponding to a PDSCH of a primary serving cell in an ACK/NACK multiplexing manner according to an embodiment of the present invention;

fig. 12 is a schematic diagram of a terminal feeding back an ACK/NACK response message corresponding to a PDSCH of a primary serving cell in a PUCCH format3 according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings by way of examples.

Example 1

As shown in fig. 10, the base station configures 2 serving cells for a terminal: the terminal is configured to use PUCCH format3 to feed back ACK/NACK response messages, and meanwhile, when the terminal is only configured with one serving cell (before carrier aggregation technology is adopted), the ACK/NACK feedback mode of the terminal is configured to be ACK/NACK bundling.

Assuming that the terminal only receives the PDSCH of the primary serving cell PCell in a certain binding window, and meanwhile, assuming that the terminal adopts the mode 1 of the invention to feed back the ACK/NACK response message, the UE adopts the ACK/NACK bundling mode to feed back the ACK/NACK response message corresponding to the PDSCH on the PCell.

Example 2:

as shown in fig. 11, the base station configures 2 serving cells for a terminal: the terminal is configured to use PUCCH format3 to feed back the ACK/NACK response message, and meanwhile, when the terminal is configured with only one serving cell (before the carrier aggregation technology is adopted), the ACK/NACK feedback mode of the terminal is configured as ACK/NACK multiplexing.

Assuming that the terminal only receives the PDSCH of the primary serving cell PCell within a certain binding window, and assuming that the terminal feeds back the ACK/NACK response message in the method 1 of the present invention, the UE feeds back the ACK/NACK response message corresponding to the PDS CH on the PCell in an ACK/NACK multiplexing manner.

Example 3

As shown in fig. 10, the base station configures 2 serving cells for a terminal: the terminal is configured to adopt PUCCH format3 to feed back the ACK/NACK response message.

Assuming that the terminal only receives the PDSCH of the primary serving cell PCell in a certain binding window, and meanwhile, assuming that the terminal adopts the mode 2 of the invention to feed back the ACK/NACK response message, the UE adopts the ACK/NACK bundling mode to feed back the ACK/NACK response message corresponding to the PDSCH on the PCell.

Example 4:

as shown in fig. 11, the base station configures 2 serving cells for a terminal: the terminal is configured to adopt PUCCH format3 to feed back the ACK/NACK response message.

Assuming that the terminal only receives the PDSCH of the primary serving cell PCell within a certain binding window, and assuming that the terminal feeds back the ACK/NACK response message in the manner 3 of the present invention, the UE feeds back the ACK/NACK response message corresponding to the PDS CH on the PCell in the manner of ACK/NACK multiplexing.

Considering that ACK/NACK bundling performs logical and operation on ACK/NACK response messages of corresponding codeword streams of each subframe in a bundling window, that is, as long as an ACK/NACK response message of a corresponding codeword stream on a subframe is NACK, the codeword streams of all subframes in the bundling window are retransmitted, and the impact on downlink throughput performance is relatively large, while ACK/NACK multiplexing only performs logical and operation on the codeword streams, and ACK/NACK response messages between subframes are independent from each other, and system simulation shows that the impact on system throughput performance by logical and operation of the codeword streams is relatively small compared with the logical and operation between subframes, therefore, the preferred scheme of the present invention is mode 3.

Example 5

As shown in fig. 12, the base station configures 2 serving cells for a terminal: the uplink subframe and the downlink subframe of the TDD system are configured to be configuration 5, that is, the terminal needs to feed back ACK/NACK response messages of 9 downlink subframes on one uplink subframe, and the terminal is configured to feed back the ACK/NACK response messages by using PUCCH format 3.

Assuming that in a certain binding window, the terminal only receives the PDSCH of the primary serving cell PCell, and since the uplink and downlink subframes of the TDD system are configured to be configuration 5, the terminal will use the method 4 of the present invention to feed back the ACK/NACK response message, the UE will use the method of PUCCH format3 to feed back the ACK/NACK response message corresponding to the PDSCH on the PCell, and when determining the channel resource corresponding to PUCCH format3, the value of ARI is a default value agreed by the terminal and the base station or a value configured at a higher layer, such as "00" being fixedly taken.

Since the channel resources of the PUCCH format3 are shared by multiple terminals, that is, the available channel resources of the PUCCH formats 3 of the multiple terminals are the same, the channel resources used when the terminal transmits the PUCCH format3 on a certain uplink subframe are dynamically indicated by the ARI in the PDCCH of Scell, for this case, the base station needs to have a certain scheduling policy to ensure that the PUCCH format3 resources used by the multiple terminals do not collide.

Example 6:

the base station configures 2 serving cells for a terminal with a plurality of uplink transmitting antennas: the terminal is configured to feed back an ACK/NACK response message by adopting PUCCH format3, the SORTD activation configuration parameter of the PUCCH format3 is ON, and the SORTD activation configuration parameter of the PUCCH format 1a/1b is ON;

assuming that the terminal only receives the PDSCH of the primary serving cell PCell in a certain binding window, and simultaneously assuming that the terminal feeds back an ACK/NACK response message corresponding to the PDSCH on the PCell in an ACK/NACK bundling mode after adopting the mode 1 or 2 of the invention;

when the terminal feeds back the ACK/NACK by adopting the multi-antenna transmission scheme 1, the terminal sends the ACK/NACK response message on the PUCCH format 1a/1b by adopting an SORTD mode;

when the terminal feeds back the ACK/NACK by adopting the multi-antenna transmission scheme 2, the terminal sends the ACK/NACK response message on the PUCCH format 1a/1b by adopting an SORTD mode;

example 7:

the base station configures 2 serving cells for a terminal with a plurality of uplink transmitting antennas: the terminal is configured to adopt PUCCH format3 to feed back ACK/NACK response messages, the SORTD activation configuration parameter of the PUCCH format3 is ON, and the SORTD activation configuration parameter of the PUCCH format 1a/1b is OFF;

assuming that the terminal only receives the PDSCH of the primary serving cell PCell in a certain binding window, and simultaneously assuming that the terminal feeds back an ACK/NACK response message corresponding to the PDSCH on the PCell in an ACK/NACK bundling mode after adopting the mode 1 or 2 of the invention;

when the terminal feeds back the ACK/NACK by adopting the multi-antenna transmission scheme 1, the terminal sends the ACK/NACK response message on the PUCCH format 1a/1b by adopting an SORTD mode;

when the terminal feeds back the ACK/NACK by adopting the multi-antenna transmission scheme 2, the terminal sends the ACK/NACK response message on the PUCCH format 1a/1b by adopting a single-antenna transmission mode;

example 8:

the base station configures 2 serving cells for a terminal with a plurality of uplink transmitting antennas: the terminal is configured to adopt PUCCH format3 to feed back ACK/NACK response messages, the SORTD activation configuration parameter of the PUCCH format3 is OFF, and the SORTD activation configuration parameter of the PUCCH format 1a/1b is ON;

assuming that the terminal only receives the PDSCH of the primary serving cell PCell in a certain binding window, and simultaneously assuming that the terminal feeds back an ACK/NACK response message corresponding to the PDSCH on the PCell in an ACK/NACK bundling mode after adopting the mode 1 or 2 of the invention;

when the terminal feeds back the ACK/NACK by adopting the multi-antenna transmission scheme 1, the terminal sends the ACK/NACK response message on the PUCCH format 1a/1b by adopting a single-antenna transmission mode;

when the terminal feeds back the ACK/NACK by adopting the multi-antenna transmission scheme 2, the terminal sends the ACK/NACK response message on the PUCCH format 1a/1b by adopting an SORTD mode;

example 9:

the base station configures 2 serving cells for a terminal with a plurality of uplink transmitting antennas: the terminal is configured to adopt PUCCH format3 to feed back ACK/NACK response messages, the SORTD activation configuration parameter of the PUCCH format3 is OFF, and the SORTD activation configuration parameter of the PUCCH format 1a/1b is OFF;

assuming that the terminal only receives the PDSCH of the primary serving cell PCell in a certain binding window, and simultaneously assuming that the terminal feeds back an ACK/NACK response message corresponding to the PDSCH on the PCell in an ACK/NACK bundling mode after adopting the mode 1 or 2 of the invention;

when the terminal feeds back the ACK/NACK by adopting the multi-antenna transmission scheme 1, the terminal sends the ACK/NACK response message on the PUCCH format 1a/1b by adopting a single-antenna transmission mode;

when the terminal feeds back the ACK/NACK by adopting the multi-antenna transmission scheme 2, the terminal sends the ACK/NACK response message on the PUCCH format 1a/1b by adopting a single-antenna transmission mode;

example 10

The base station configures 2 serving cells for a terminal with a plurality of uplink transmitting antennas: the terminal is configured to adopt PUCCH format3 to feed back ACK/NACK response messages, and SORTD activation configuration parameters of the PUCCH format3 are ON;

assuming that the terminal only receives the PDSCH of the PCell in a certain binding window, and meanwhile, assuming that the terminal feeds back an ACK/NACK response message corresponding to the PDSCH on the PCell in an ACK/NACK multiplexing mode after adopting the mode 1 or 2 of the invention, the terminal adopts a single-antenna transmission mode and adopts a PUCCH format 1b combined channel selection mode to send the ACK/NACK response message.

Example 11

Based on the above method embodiment, the present invention further provides a terminal embodiment for implementing the method for sending the correct/incorrect response message in the time division 5 duplex system provided by the present invention, in the terminal embodiment, the terminal configures a plurality of serving cells, and feeds back the ACK/NACK response message by using PUCCH format3, and when receiving only the PDSCH from the primary serving cell, the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the primary serving cell by using an ACK/NACK feedback manner configured when configuring only one serving cell; or when the terminal only receives the PDSCH from the main service cell, the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main service cell by adopting an ACK/NACK binding mode; or when the terminal only receives the PDSCH from the main service cell, the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main service cell by adopting an ACK/NACK multiplexing mode; or when the terminal only receives the PDSCH from the main serving cell and determines the PUCCH format3 channel resource index corresponding to the PUCCH format3, the ACK/NACK resource indication symbol takes the default value appointed by the terminal and the base station.

Since the terminal provided in the embodiment of the present invention is for implementing the method provided in the present invention, the functions thereof can be directly derived or unambiguously determined by the foregoing embodiment, and for the sake of brevity, the same contents as the content of the invention and the foregoing embodiment are not described again here.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A method for transmitting a correct/error (ACK/NACK) response message in a time division duplex system, the method being applicable to a terminal which is configured with a plurality of serving cells and feeds back the ACK/NACK response message in a Physical Uplink Control Channel (PUCCH) format3,

when the terminal only receives a Physical Downlink Shared Channel (PDSCH) from a main serving cell, the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main serving cell by adopting an ACK/NACK response message feedback mode configured when only one serving cell is configured;

when the terminal is configured with only one serving cell, the configured feedback mode of the ACK/NACK response message is an ACK/NACK bundling (ACK/NACK bundling) mode, and when the terminal only receives the PDSCH from the main serving cell, the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the main serving cell in the ACK/NACK bundling mode; when the terminal is configured with only one serving cell, the configured ACK/NACK response message feedback mode is an ACK/NACK multiplexing (ACK/NACK multiplexing) mode, and when the terminal only receives the PDSCH from the main serving cell, the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the main serving cell in the ACK/NACK multiplexing mode;

when the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main service cell in an ACK/NACK binding mode: if the Spatial Orthogonal Resource Transmit Diversity (SORTD) activation configuration parameter of the PUCCH format3 is ON (ON), the terminal transmits the ACK/NACK response message ON the PUCCH format 1a/1b in the SORTD manner, and if the SORTD activation configuration parameter of the PUCCH format3 is OFF (OFF), the terminal transmits the ACK/NACK response message ON the PUCCH format 1a/1b in the single antenna transmission mode; or,

when the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main service cell in an ACK/NACK binding mode: if the SORTD activation configuration parameter of the PUCCH format 1a/1b is ON, the terminal sends the ACK/NACK response message ON the PUCCH format 1a/1b in an SORTD mode; and if the PUCCH format 1a/1b SORTD activation configuration parameter is OFF, the terminal sends the ACK/NACK response message on the PUCCH format 1a/1b by adopting a single-antenna transmission mode.

2. A method for transmitting a ACK/NACK response message in a time division duplex system, the method being applicable to a terminal configured with a plurality of serving cells and using PUCCH format3 for feeding back an ACK/NACK response message,

when the terminal only receives the PDSCH from the main service cell, the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main service cell in an ACK/NACK binding mode; or the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main service cell in an ACK/NACK multiplexing mode;

when the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main service cell in an ACK/NACK binding mode: if the Spatial Orthogonal Resource Transmit Diversity (SORTD) activation configuration parameter of the PUCCH format3 is ON (ON), the terminal transmits the ACK/NACK response message ON the PUCCH format 1a/1b in the SORTD manner, and if the SORTD activation configuration parameter of the PUCCH format3 is OFF (OFF), the terminal transmits the ACK/NACK response message ON the PUCCH format 1a/1b in the single antenna transmission mode; or,

when the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main service cell in an ACK/NACK binding mode: if the SORTD activation configuration parameter of the PUCCH format 1a/1b is ON, the terminal sends the ACK/NACK response message ON the PUCCH format 1a/1b in an SORTD mode; and if the PUCCH format 1a/1b SORTD activation configuration parameter is OFF, the terminal sends the ACK/NACK response message on the PUCCH format 1a/1b by adopting a single-antenna transmission mode.

3. The method according to claim 1 or 2, wherein when the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the primary serving cell in the ACK/NACK bundling manner:

and the ACK/NACK binding mode adopts PUCCH format 1a/1b to send the ACK/NACK response message.

4. The method according to claim 1 or 2, wherein when the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the primary serving cell in an ACK/NACK multiplexing manner:

the ACK/NACK multiplexing mode is a mode of PUCCH format 1b combined channel selection.

5. The method of claim 4,

the mapping relationship table between the state combination { HARQ-ACK (i) ═ 0,1,2,3} of the ACK/NACK response message in the PUCCH format 1b joint channel selection mode, the channel index of the selected PUCCH format 1b, and the 2-bit information b (0) b (1) carried on the channel is a mapping table defined by LTE or a mapping table defined by LTE-a.

6. The method according to claim 1 or 2,

and when the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the main service cell in an ACK/NACK multiplexing mode, the terminal transmits the ACK/NACK response message in a single-antenna transmission mode in a PUCCH format 1b combined channel selection mode.

7. A terminal configured with a plurality of serving cells and configured to feed back an ACK/NACK response message in PUCCH format3,

when only receiving the PDSCH from the main service cell, the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main service cell by adopting an ACK/NACK feedback mode configured when only one service cell is configured; or feeding back an ACK/NACK response message corresponding to the PDSCH of the main service cell by adopting an ACK/NACK binding mode; or feeding back an ACK/NACK response message corresponding to the PDSCH of the main service cell by adopting an ACK/NACK multiplexing mode; or when determining the PUCCH format3 channel resource index corresponding to the PUCCH format3, the ACK/NACK resource indicator takes a default value or a high-level configured value agreed by the terminal and the base station;

when the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main service cell in an ACK/NACK binding mode: if the SORTD activation configuration parameter of the PUCCH format3 is on, the terminal transmits the ACK/NACK response message on the PUCCH format 1a/1b in a SORTD manner, and if the SORTD activation configuration parameter of the PUCCH format3 is off, the terminal transmits the ACK/NACK response message on the PUCCH format 1a/1b in a single antenna transmission mode, or,

when the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main service cell in an ACK/NACK binding mode: the ACK/NACK binding mode adopts PUCCH format 1a/1b to send ACK/NACK response message; if the SORTD activation configuration parameter of the PUCCH format 1a/1b is ON, the terminal sends the ACK/NACK response message ON the PUCCH format 1a/1b in an SORTD mode; and if the PUCCH format 1a/1b SORTD activation configuration parameter is OFF, the terminal sends the ACK/NACK response message on the PUCCH format 1a/1b by adopting a single-antenna transmission mode.

8. The terminal of claim 7, wherein when the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the primary serving cell in the ACK/NACK feedback manner configured when only one serving cell is configured:

if the ACK/NACK response message feedback mode configured when only one service cell is configured is an ACK/NACK binding mode, the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the main service cell by adopting the ACK/NACK binding mode when only the PDSCH of the main service cell is received;

if the ACK/NACK response message feedback mode configured when only one serving cell is configured is an ACK/NACK multiplexing mode, the terminal feeds back an ACK/NACK response message corresponding to the PDSCH of the main serving cell in an ACK/NACK multiplexing mode when receiving only the PDSCH of the main serving cell.

9. The terminal of claim 7,

when the terminal feeds back an ACK/NACK response message corresponding to a PDSCH of a main service cell by adopting an ACK/NACK binding mode, the ACK/NACK binding mode adopts a PUCCH format 1a/1b to send the ACK/NACK response message;

and when the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the main service cell in an ACK/NACK multiplexing mode, the ACK/NACK multiplexing mode is a mode of PUCCH format 1b combined channel selection.

10. The terminal of claim 7,

and when the terminal feeds back the ACK/NACK response message corresponding to the PDSCH of the main service cell in an ACK/NACK multiplexing mode, the terminal transmits the ACK/NACK response message in a single-antenna transmission mode in a PUCCH format 1b combined channel selection mode.