WO2013026397A1

WO2013026397A1 - Response information transmission method, receiving method, user equipment and base station

Info

Publication number: WO2013026397A1
Application number: PCT/CN2012/080473
Authority: WO
Inventors: 陈小锋; 吕永霞
Original assignee: 华为技术有限公司
Priority date: 2011-08-22
Filing date: 2012-08-22
Publication date: 2013-02-28
Also published as: CN102957518A; CN105611645A; CN102957518B; CN105611645B; CN105577334B; CN105577334A

Abstract

Disclosed in an embodiment of the present invention are a response information transmission method, receiving method, user equipment (UE) and base station, suitable for the situation when the base station allocates a plurality of downlink member carriers for the UE. The method in the embodiment of the present invention comprises: the UE generates response information corresponding to the data carried in a downlink member carrier received by the UE; the UE searches in a response information mapping table for a data symbol group and a response information channel group corresponding to the response information corresponding to the data carried in the downlink member carrier, different response information channel groups in the response information mapping table comprising different response information channels; the UE maps each data symbol in the data symbol group respectively into at least one response information channel; and the UE transmits the data symbols in the data symbol group to the base station on the mapped response information channel.

Description

Method for transmitting response information, receiving method, and user equipment and base station The application is filed on August 22, 2011, the Chinese Patent Office, the application number is 201110241609.4, and the invention name is "a method for transmitting response information, a receiving method, and Priority of the Chinese Patent Application for User Equipment and Base Stations, the entire contents of which are incorporated herein by reference.

Technical field

The present invention relates to the field of wireless communications, and in particular, to a method for transmitting response information, a receiving method, and a user equipment and a base station.

Background technique

In the Hybrid Automatic Repeat Request ( HARQ) technology, after the data transmission direction data receiver sends data, the data receiver needs to feed back the response information to the data sender, and confirm to the data sender whether to correctly receive the transmission. The data and the response information specifically include the following three cases: acknowledgement (ACK, Acknowledgement), denial (NACK, Negative-acknowledgement), and discontinuous transmission (DTX, Discontinuous Transmission). Among them, ACK indicates that the data is received correctly, NACK indicates that the data is received incorrectly, and DTX indicates that the data is not received.

The 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) evolves the E-UTRA (Evolved Universal Terrestrial Radio Access) system, also known as the Long Term Evolution (LTE) system. In the uplink direction, the user equipment feeds back, by the physical uplink control channel (PUCCH, Physical Uplink Control Channel), response information to the base station for receiving downlink data received by the base station. The PUCCH channel used for the user equipment to feed back the response information to the base station is referred to as an acknowledgement information channel, also referred to as an ACK channel.

Advanced Long Term Evolution (LTE-A, Long Term) as a further evolution and enhancement system for LTE systems

Evolution Advanced) In the system, Carrier Aggregation (CA) is used. Technology, also known as Spectrum Aggregation or Bandwidth Extension, supports wider bandwidth to meet the International Telecommunications Union's peak data rate requirements for fourth-generation communications technologies. In carrier aggregation technology, the spectrum of two or more component carriers (CC, Component Carrier) is aggregated to obtain a wider transmission bandwidth.

At present, the state of the response information is fed back by the channel selection method, that is, one of the plurality of ACK channels and a plurality of four phase phase shift keying (QPSK, Quadrature Phase Shift Keying) are performed by a predefined rule. A combination of one QPSK modulation symbol in the modulation symbol, expressed as: (ACK channel, QPSK modulation symbol), represents a state of the response information, and the QPSK modulation symbol is transmitted through the ACK channel to uplink feedback the state of the response information corresponding to the combination. . When receiving the uplink data, the base station first determines which ACK channel has received the data, and identifies which QPSK symbol is received on the ACK channel, according to the combination of the ACK channel and the QPSK modulation symbol it transmits, and the response. The correspondence between the states of the information can be used to obtain the response information fed back by the user equipment, so as to know the receiving condition of the data transmitted by the user equipment on the downlink component carrier.

The prior art described above is only applicable to the case where the base station configures a downlink component carrier for the user equipment. In carrier aggregation technology, each component carrier has an independent HARQ process. When the LTE-A user equipment accesses multiple downlink component carriers at the same time, the data transmitted on the physical downlink shared channel (PDSCH, Physica D Dedicated Shared Channel) of each downlink component carrier must be fed back corresponding response information. However, such a method suitable for a plurality of downlink member-loaded response information does not exist in the prior art.

Summary of the invention

The embodiment of the invention provides a method for transmitting response information, a receiving method, a user equipment and a base station.

A method for transmitting response information provided by an embodiment of the present invention includes:

The user equipment generates a data corresponding to the data carried by the downlink component carrier received by the user equipment. Answer information

The user equipment searches the response information mapping table, finds the response information channel group and the data symbol group corresponding to the response information, and the response information channel groups included in the different response information channel groups in the response information mapping table are different;

The user equipment maps each of the data symbol groups to at least one response information channel;

The user equipment transmits the data symbols in the data symbol group to the base station on the mapped response information channel.

A method for receiving response information provided by an embodiment of the present invention includes:

The base station detects a response information channel group used by the user equipment for feedback response information, and each of the response information channel groups is mapped with at least one data symbol in the data symbol group; the base station is detecting the response Demodulating the data carried by the response information channel to obtain a data symbol group on the response information channel corresponding to the information channel group;

The base station searches for the response information mapping table by using the detected response information channel group and the demodulated data symbol group, and obtains response information fed back by the user equipment.

A user equipment provided by the embodiment of the present invention includes:

The response information generating unit is configured to generate response information corresponding to the data carried by the downlink component carrier received by the user equipment;

a searching unit, configured to search the response information mapping table, and find a response information channel group and a data symbol group corresponding to the response information corresponding to the data carried by the downlink component carrier, and different response information channels in the response information mapping table The response information channels included in the group are not the same;

a mapping unit, configured to map each data symbol in the data symbol group to at least one response information channel;

And a data symbol group sending unit, configured to send the data symbols in the data symbol group to the base station on the mapped response information channel. A base station provided by an embodiment of the present invention includes:

a detecting unit, configured to detect a response information channel group used by the user equipment for feedback response information, where each response information channel in the response information channel group is mapped with at least one data symbol in the data symbol group;

a demodulation unit, configured to demodulate data carried by the response information channel to obtain a data symbol group on a response information channel corresponding to the detected response information channel group;

The searching unit is configured to search the response information mapping table by using the detected response information channel group and the demodulated data symbol group to obtain response information fed back by the user equipment.

As can be seen from the above technical solutions, the embodiments of the present invention have the following advantages:

In the embodiment of the present invention, the user equipment finds the response information channel group and the data symbol group corresponding to the response information corresponding to the data carried by the received downlink component carrier by searching the response information mapping table, and then the user equipment uses the data symbol. Each of the data symbols in the group is mapped to the at least one response information channel, and the user equipment sends the data symbols in the data symbol group to the base station. The user equipment in the embodiment of the present invention passes through a response information channel group and a data symbol group. When the downlink component carrier received by the user equipment is multiple carriers, the response information channel group and the data symbol group corresponding to one type of response information may be used to indicate that the user equipment receives multiple downlink component carriers. It can be applied to the case where the base station configures multiple downlink component carriers for the user equipment.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those skilled in the art from the drawings.

FIG. 1 is a schematic diagram of a method for transmitting response information according to an embodiment of the present invention; FIG. 2 is a schematic diagram of transmitting data symbols by using an antenna corresponding to an ACK channel according to an embodiment of the present invention; Schematic diagram

FIG. 3 is a schematic diagram of another method for transmitting data symbols by using an antenna corresponding to an ACK channel according to an embodiment of the present disclosure;

4 is a schematic diagram of resource blocks of a PUCCH according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of 36 different pilots according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic diagram of a method for receiving response information according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a user equipment according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a base station according to an embodiment of the present invention.

detailed description

The embodiment of the invention provides a method for sending response information, a receiving method, a user equipment and a base station, which can be used to improve resource utilization when multiple antenna ports are used.

In order to make the object, the features and the advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of the present invention.

As shown in FIG. 1, the method for transmitting response information provided by the embodiment of the present invention includes: 101. A user equipment generates response information corresponding to data carried by a downlink component carrier received by the user equipment.

In the embodiment of the present invention, when the user equipment accesses multiple downlink component carriers at the same time, the base station can transmit data to the user equipment on the physical downlink shared channel (PDSCH) through each downlink component carrier, the user equipment. The data sent by the base station is received by each downlink component carrier, and the data received by the multiple downlink component carriers is fed back to the base station. In the embodiment of the present invention, after the user equipment receives the downlink component carrier, the user equipment needs to feed back the response information to the base station according to the receiving situation, and is used to indicate the receiving condition of the data sent by the user equipment to the base station. The base station allocates a response information channel (referred to as an ACK channel in the embodiment of the present invention) to the downlink component carrier in the carrier aggregation scenario, and the user equipment can feed back the response information of the data carried by the user equipment to each downlink component carrier by using the ACK channel allocated by the base station. . The downlink component carrier is a configured or activated component carrier. When N downlink component carriers are used, the base station configures 2 ACK channels for each downlink component carrier, and there are 2N ACK channels, and N is a natural number.

For example, when N is 2, there are two downlink component carriers, and the base station allocates two ACK channels for each downlink component carrier, and has 4 ACK channels, and data transmission on each downlink component carrier of the two downlink component carriers. It is configured to support the transmission of two codewords at the maximum. Each codeword is independently channel-coded and independently checked for reception. Therefore, the response information corresponding to each codeword can be separately fed back.

In practical applications, the user equipment needs feedback response information. If it is full feedback, the response information to be fed back specifically includes three types: ACK, NACK, and DTX, that is, each codeword needs to feed back three states, which are ACK. NACK and DTX, then the response information corresponding to all the codewords of the two downlink component carriers has a total of 3 X 3 X 3 X 3=81 states. However, the importance of all these response messages is not the same. Some response messages do not need to be distinguished. The response information to be fed back can also include two types: ACK:, NACK/DTX. Because when these response messages are generated, the impact on the receiving end (base station) is the same or substantially the same. For example, the base station sends a codeword to the user equipment. If the user equipment receives an error and needs to feed back the NACK to the base station, or the user equipment does not receive the codeword at all, the DTX needs to be fed back to the base station, but the base station needs to re-re- The codeword is transmitted once. In this case, the response message NACK and the response message DTX are indistinguishable, and a state is directly indicated by "NACK/DTX".

102. The user equipment searches the response information mapping table, and finds a response information channel group and a data symbol group corresponding to the generated response information, where different response information channels in the response information mapping table The response information channels included in the group are not the same.

In the embodiment of the present invention, the response information to be fed back is respectively represented by different response information channel groups and different data symbol groups, and a response information mapping table may be formed. In the response information mapping table, the response information channel group is at least The two response information channels are included, and different response information channel groups include different response information channels, and each response information channel includes two time slots. Assuming that the base station configures N downlink component carriers for the user equipment, the base station configures 2 ACK channels for each downlink component carrier, and then there are 2N ACK channels, N is a natural number, and 2N ACK channel packets are grouped into N groups. Two ACK channels per group. Taking two downlink component carriers as an example, two ACK channels corresponding to the same downlink member carrier are grouped into the same group.

In the response information mapping table, a response information channel group and a data symbol group uniquely correspond to one response information to be fed back. For example, when N is 2, there are two downlink component carriers, and one downlink component carrier is allocated. The ACK channel is ACK channel 0 and ACK channel 1, and the ACK channel allocated by the other downlink component carrier is ACK channel 2 and ACK channel 3. The ACK channel 0 and the ACK channel 1, the ACK channel 2 and the ACK channel 3 are divided into two groups, respectively For the ACK channel group (0, 1) and the ACK channel group (2, 3), an ACK channel group and a data symbol group are used to indicate a response message to be fed back, as shown in Table 1 below. a response information mapping table of the feedback response information. Of course, in the actual application, a mapping table between the response information to be fed back and the response information channel group and the data symbol group may be derived according to the response information mapping table. It is an example and is not limited.

Table 1 is the response information mapping table of the response information to be fed back.

Response information to be fed back

HARQ-ACK ( HARQ-ACK HARQ-ACK (2 HARQ-ACK ACK channel data symbol 0) (1)) (3) Group

(a0, al)_l

ACK ACK ACK ACK ( 0, 1 )

(b0, bl)_l

ACK NACK/DTX ACK ACK ( 2, 3 ) (a0, al)_2

NACK/DTX ACK ACK ACK (0, 1)

(b0, bl)_2

NACK/DTX NACK/DTX ACK ACK (2, 3)

(a0, al)_3

ACK ACK ACK NACK/DTX (0, 1)

(b0, bl)_3

ACK NACK/DTX ACK NACK/DTX (2, 3)

(a0, al)_4

NACK/DTX ACK ACK NACK/DTX (0, 1)

(b0, bl)_4

NACK/DTX NACK/DTX ACK NACK/DTX (2, 3)

(b0, bl)_5

ACK ACK NACK/DTX ACK (2, 3)

(b0, bl)_6

ACK NACK/DTX NACK/DTX ACK (2, 3)

(b0, bl)_7

NACK/DTX ACK NACK/DTX ACK (2, 3)

(b0, bl)_8

NACK/DTX NACK/DTX NACK/DTX ACK (2, 3)

(a0, al)_5

ACK ACK NACK/DTX NACK/DTX (0, 1)

(a0, al)_6

ACK NACK/DTX NACK/DTX NACK/DTX (0, 1)

(a0, al)_7

NACK/DTX ACK NACK/DTX NACK/DTX (0, 1)

(a0, al)_8

NACK/DTX NACK NACK/DTX NACK/DTX (0, 1)

(a0, al)_8

NACK NACK/DTX NACK/DTX NACK/DTX (0, 1)

DTX DTX NACK/DTX NACK/DTX No Transmission

It should be noted that HARQ-ACK (0) represents the reception response information corresponding to the first codeword on the first downlink component carrier, and HARQ-ACK (1) represents the second code on the first downlink component carrier. Receive response information corresponding to the word, HARQ-ACK (2) represents the reception response information corresponding to the first codeword on the second downlink component carrier, and HARQ-ACK (3) represents the second on the second downlink component carrier. Receive response information corresponding to each codeword. ACK indicates that the user equipment receives the correct codeword, NACK table The user equipment indicates that the codeword is incorrectly received, DTX indicates that the user equipment does not receive the codeword, NACK/DTX indicates that the user equipment receives the codeword error or does not receive the codeword; (0, 1) indicates a response information channel group, including The response information channel 0 and the response information channel 1, the response information channel 0 and the response information channel 1 are respectively two response information channels allocated by the base station for the first downlink component carrier, and (2, 3) represents another response information channel group. The response information channel 2 and the response information channel 3 are included, and the response information channel 2 and the response information channel 3 are respectively two response information channels allocated by the base station for the second downlink component carrier; (a0, al) - i represents a data symbol group, i=l , 2, 8, when i takes different values, it means different data symbol groups, (b0, bl)J represents the data symbol group, j=l, 2, 8, when j takes different values, it means different Group of data symbols. In Table 1, if the response information generated by the user equipment is the state of the last row in Table 1, the user equipment will not send anything, and "No transmission" means that no data is sent.

Next, the data symbol group in Table 1 is explained as follows: For example, two data symbols a0 and al in Table 1, in practical applications, two data symbols can pass the same eight-phase phase shift keying (8PSK, 8 Phase Shift Keying) The constellation point representation. Or, one of the two data symbols is represented by a constellation point of Quadrature Phase Shift Keying (QPSK), and the other of the two data symbols is subjected to biphasic phase shift keying (BPSK, Binary Phase Shift) Keying) is indicated by the constellation point. Or, two data symbols are respectively represented by three of the four constellation points of QPSK. Or, the two data symbols are respectively represented by constellation points of 3 Phase Shift Keying (3PSK, 3 Phase Shift Keying). Next, a detailed example is given. For example, one of the data symbol groups (a0, al)_i, i=l, 2, ..., 8, in Table 1 has four different values. , Data symbol group (a0, al) - Another data symbol (such as al) in i has 2 different values. For example, four different values are the four constellation points corresponding to QPSK, and two different values are the two constellation points corresponding to BPSK.

In each set of data symbols (a0, al)-i, the value of a0 is one of the data symbols Qm, and the value of al is one of Qm, m=0, 1 , 2, 3 , Qm The values are as shown in the following table. The values of the four constellation points of QPSK and the correspondence with the bit groups are as shown in Table 2 below: Table 2 is the relationship between data symbols QPSK modulation symbols and bit values.

When i takes different values, the values of aO in the data symbol group (aO, al)-i are different, or the values of al are different, or the values of aO and al are different.

In each set of data symbols (aO, al)-i, the value of aO is one of Qm, and the value of al is one of Qm, m=0, 1 , 2, 3 , Qm The values are shown in the following table. The values of the four constellation points of QPSK and the correspondence with the bit groups can also be as shown in Table 3 below:

Table 3 is the relationship between data symbols QPSK modulation symbols and bit values.

When i takes different values, the values of aO in the data symbol group (aO, al)-i are different, or the values of al are different, or the values of aO and al are different. The values of the two constellation points of BPSK and the correspondence with the bit groups are shown in Table 4:

Table 4 shows the relationship between BPSK modulation symbols and bit values of data symbols.

The a0 and al in the data symbol group (a0, al)_i in Table 1 can have three different values respectively. For example, three different values are three of the QPSK constellation points, and a0 and al are taken out. The three constellation points may not be identical. For example, a0 takes {1, -1, j}, al takes {j, -j, 1}; for example, 3 different values are 3 constellations corresponding to 3PSK {C, Cexp{j 27T/3 }, Cexp{j 47T/3}}, where C is any complex number, C can take 1, and exp{} denotes an exponential function with e as the bottom, as shown in Table 5 below:

When i takes different values, the values of a0 in the data symbol group (a0, al)-i are different, or the values of al are different, or the values of a0 and al are different.

It should be noted that (b0, bl) J, j=l, 2, ..., 8, in Table 1, where bO and bl can also be performed according to one of the above methods of a0 and al. Value, but the value of a0 and al can be the same as or different from b0 and bl. It is only described here.

According to the value of the data symbol group, for two downlink component carriers, for example, when N is 2, ACK channel 0 and ACK channel 1, ACK channel 2, and ACK channel 3 are divided into two groups, Don't be an ACK channel group (0, 1) and an ACK channel group (2, 3). The data symbol group is (aO, al)-i and (bO, bl) J, respectively, and the bit values are respectively taken according to the above method for the data symbol group, and the response information mapping table of the response information to be fed back as shown in Table 6 is obtained. .

Table 6 is the response information mapping table of the response information to be fed back.

Response information to be fed back Data symbol group

HARQ-ACK HARQ-ACK HARQ-ACK HARQ-ACK ACK Letter Corresponding Bits (0) (1) (2) (3) Track Group

ACK ACK ACK ACK (0, 1) ([1, 1], [1])

ACK NACK/DTX ACK ACK (2, 3) ([0, 1], [1])

NACK/DTX ACK ACK ACK (0, 1) ([0, 1], [1])

NACK/DTX NACK/DTX ACK ACK (2, 3) ([1, 1], [1])

ACK ACK ACK NACK/DTX (0, 1) ([1, 0], [1])

ACK NACK/DTX ACK NACK/DTX (2, 3) ([0, 0], [1])

NACK/DTX ACK ACK NACK/DTX (0, 1) ([0, 0], [1])

NACK/DTX NACK/DTX ACK NACK/DTX (2, 3) ([1, 0], [1])

ACK ACK NACK/DTX ACK (2, 3) ([1, 1], [0])

ACK NACK/DTX NACK/DTX ACK (2, 3) ([1, 0], [0] )

NACK/DTX ACK NACK/DTX ACK (2, 3) ([0, 1], [0] )

NACK/DTX NACK/DTX NACK/DTX ACK (2, 3) ([0, 0], [0])

ACK ACK NACK/DTX NACK/DTX (0, 1) ([1, 1], [0] )

ACK NACK/DTX NACK/DTX NACK/DTX (0, 1) ([1, 0], [0]) NACK/DTX ACK NACK/DTX NACK/DTX (0, 1) ([0, 1], [0] )

NACK/DTX NACK NACK/DTX NACK/DTX (0, 1) ([0, 0], [0] )

NACK NACK/DTX NACK/DTX NACK/DTX (0, 1) ([0, 0], [0] )

DTX DTX NACK/DTX NACK/DTX No Transmission

It should be noted that, in the specific application, the bit group of Table 6 may be corresponding to the data symbol group. For example, the bit [1, 1] of the previous bit with two bits in the parentheses of the bit group ([1, 1], [1]) corresponds to one of the data symbols as shown in Table 2. QPSK Modulation Symbol, Bit Group ([1 , 1], [1]) ratio after a bit brackets Laid ~ ⁼ ~ ^ [1] corresponding to the data symbol in table 4 a ¹ = a BPSK modulation symbols. Of course, in the actual application, the response information mapping table of the response information to be fed back may be derived according to the mapping relationship table of the table 2 or the table 3 or the table 4, which is not limited herein.

103. The user equipment maps each data symbol in the data symbol group to at least one response information channel.

In the embodiment of the present invention, the user equipment maps each response information channel in the response information channel group corresponding to the response information that needs to be fed back to different antenna ports. The user equipment maps each response information channel in the response information channel group corresponding to the response information that needs to be fed back to different antenna ports, so that the user equipment corresponding antenna port transmits data corresponding to the response information that needs feedback to the base station. Symbol group.

For example, when there are two downlink component carriers, the base station allocates two for each downlink component carrier.

ACK channel, there are 4 ACK channels. For example, as shown in Table 6, two ACK channels (ACK channel 0 and ACK channel 1) in the ACK channel group (ACK channel (0, 1)) are mapped to antenna port 0 and antenna, respectively. Port 1, in the embodiment of the present invention, mapping the response information channel to the antenna port means that a corresponding relationship is established between the response information channel and the antenna port, and when the data symbol needs to be transmitted through the antenna port, it must be The response information channel of the antenna port mapping should be implemented, for example For example, mapping ACK channel 0 to antenna port 0 means that transmission is performed corresponding to ACK channel 0 when data symbols need to be transmitted through antenna port 0.

In the embodiment of the present invention, the data symbol needs to be transmitted corresponding to the ACK channel, and the user equipment maps each data symbol in the data symbol group corresponding to the feedback information that needs to be fed back to at least one response information channel.

In an actual application, mapping each data symbol in the data symbol group to the at least one response information channel may be: the user equipment maps each data symbol in the data symbol group to a response information channel, that is, each Data symbols are uniquely mapped into a response information channel. Or, the user equipment maps each of the data symbol groups to two acknowledgment information channels. For example, the response information that the user equipment needs to feed back in Table 6 is the response information (ACK, ACK, ACK, ACK) in the four channels in the first row in Table 6, and the data symbol corresponding to the response information that the user equipment needs to feed back. The group is a bit group ([1, 1], [1]). One way to achieve this is that the user equipment maps the data symbols [1, 1] in the bit group ([1, 1], [1]) Mapping a data symbol [1] in a bit group ([1, 1], [1]) to a time slot in another response information channel to a time slot or two time slots in an acknowledgement information channel or Two time slots.

In an actual application, when the data symbol group includes two data symbols, the user equipment respectively maps each data symbol in the data symbol group to the at least one response information channel, which may be: the user equipment uses one data in the data symbol group. The symbol is mapped to two response information channels; the user equipment maps another data symbol in the data symbol group to a response information channel.

When the data symbol group includes two data symbols, the user equipment mapping one data symbol in the data symbol group to the two response information channels may include: the user equipment mapping one data symbol in the data symbol group to the first response information. a first time slot of the channel and a second time slot of the second response information channel; or, the user equipment maps one data symbol in the data symbol group to the first time slot of the first response information channel, the first response information channel The third time slot, the second time slot of the second response information channel. The user equipment maps another data symbol in the data symbol group to a response information channel. The method includes: the user equipment mapping another data symbol in the data symbol group to a fourth time slot of the second response information channel.

For example, the response information that the user equipment needs to feed back in Table 6 is the response information (ACK, ACK, ACK, ACK) in the four channels in the first row in Table 6, and the data symbol corresponding to the response information that the user equipment needs to feed back. The group is a bit group ([1, 1], [1]), and the user equipment maps the data symbol [1, 1] in ([1, 1], [1]) to one of the two response information channels. One time slot of the information channel and one time slot of the other response information channel, mapping the data symbol [1] in the bit group ([1, 1], [1]) to another response information in the two response information channels Another time slot of the channel. Or, the user equipment maps the data symbol [1, 1] in ([1, 1], [1]) to two time slots of one of the two response information channels and another response information channel One of the time slots maps the data symbol [1] in the bit group ([1, 1], [1]) to another time slot of the other response information channel. There are many ways to map here, which is not limited here.

In an actual application, the user equipment mapping each data symbol in the data symbol group to at least one response information channel may be: the user equipment maps each data symbol in the data symbol group to two response information channels.

When the data symbol group includes two data symbols, the user equipment maps each data symbol in the data symbol group to two response information channels including:

The user equipment maps one of the data symbols in the data symbol group to the first time slot of the first response information channel and the second time slot of the second response information channel. The user equipment maps another data symbol in the data symbol group to a third time slot of the first response information channel and a fourth time slot of the second response information channel.

For example, the response information that the user equipment needs to feed back in Table 6 is the response information (ACK, ACK, ACK, ACK) in the four channels in the first row in Table 6, and the data symbol corresponding to the response information that the user equipment needs to feed back. The group is a bit group ([1, 1], [1]), and the user equipment maps the data symbol [1, 1] in ([1, 1], [1]) to one of the two response information channels. One time slot of the information channel and one time slot of the other response information channel, the data symbols in the bit group ([1, 1], [1]) [1] is mapped to another time slot of one of the two response information channels and another time slot of the other of the response information channels.

Next, a method of transmitting data by the data symbol through the ACK channel occupied by the antenna will be described. For example, two ACK channels (ACK channel 0 and ACK channel 1) of the ACK channel group are mapped to antenna 1 and antenna 2, respectively, and a set of data symbols corresponding to the response information are a0 and al (or b0 and bl). The corresponding ACK channel group is ACK channel 0 and ACK channel 1 (or ACK channel 2 and ACK channel 3), then data symbol a0 can be mapped to two time slots of ACK channel 0, and data symbol al can be mapped to The two slots of ACK channel 1 are transmitted as shown in FIG. 2. Or, a0 is mapped to one of the ACK channel 0 and one of the ACK channel 1 is transmitted, and the data symbol a1 is mapped to the other of the ACK channel 0 and the other of the ACK channel 1 is transmitted. As shown in Figure 3.

In the embodiment of the present invention, each response information channel in the response information channel group is transmitted in two resource blocks of the physical uplink control channel, and the PUCCH includes multiple resource blocks, and each resource block corresponds to the frequency domain. 12 consecutive subcarriers, corresponding to 6 or 7 symbols in the time domain ( symbol ) „ The number of symbols corresponding to a resource block in the time domain is related to the length of the cyclic prefix. Under the normal cyclic prefix, corresponding to 7 symbols, Under the extended cyclic prefix, it will correspond to 6 symbols. The following is an example of a resource block corresponding to 7 symbols. An ACK channel will be transmitted in two resource blocks of the PUCCH, where the two resource blocks are located differently. FIG. 4 is a schematic diagram of resource blocks of a PUCCH according to an embodiment of the present invention. In FIG. 4, in a resource block of an ACK channel, three symbols in the middle are used to transmit demodulation pilots, and the remaining four symbols are used. To transmit data symbols, such as to transmit a0, al, b0, bl as described above.

In one resource block of the PUCCH, different ACK channels are code-multiplexed together, wherein the codes of the ACK channels are mutually orthogonal to distinguish different ACK channels. The data symbols to be transmitted in each slot in the ACK channel are spread and mapped onto the resource block shown in FIG. The sequence used for spreading is a two-dimensional orthogonal spreading code, and the spreading code in the frequency domain is a length of 12. The sequence has a total of 12 different sequences; the spreading code in the time domain is an orthogonal sequence of length 4 with a total of 3 different sequences. The 12 sequences in the frequency domain are obtained by phase rotation of a base sequence, ie, _r ^a (w) = ^ /i2 _r (w), " = 0,1,·· · ·,11;" = 0,1 , · · ·, 11. Wherein, it is a base sequence of length 12, and r" is a sequence obtained by phase rotation of the base sequence. In the time domain, there are three orthogonal sequences of length 4, as shown in Table 7.

Table 7 shows three orthogonal sequence tables of length 4

5 is a schematic diagram of a transmission structure of an ACK channel according to an embodiment of the present invention. A data symbol m (for example, m is a0, al, b0, bl, etc.) transmitted on a time slot on an ACK channel passes through a time-frequency domain sequence. Dimensional spreading is mapped to 4 M in the resource block in the symbol of the data transmission, wherein the frequency domain sequence used is r"(«), the sequence used in the time domain is, and there are up to 36 pilot selections in FIG. Therefore, it can support up to 36 different ACK channels.

As shown in Fig. 5, a resource block has 12 sequences in the frequency domain and 3 sequences in the time domain, and a total of 36 sequence combinations, that is, 36 two-dimensional spreading sequences. Different ACK channels in the same resource block will employ different sequences of the 36 two-dimensional spreading sequences. Please refer to Table 8. These 36 two-dimensional spread spectrum sequences can be numbered K:.

Table 8 shows the number K of 36 two-dimensional spreading sequences.

0 K=0 Κ=12 Κ=24

1 K=l Κ=13 Κ=25

2 Κ=2 Κ=14 Κ=26

3 Κ=3 Κ=15 Κ=27

4 Κ=4 Κ=16 Κ=28

5 Κ=5 Κ=17 Κ=29

6 Κ=6 Κ=18 Κ=30

7 Κ=7 Κ=19 Κ=31

8 Κ=8 Κ=20 Κ=32

9 Κ=9 Κ=21 Κ=33

10 Κ=10 Κ=22 Κ=34

11 Κ=11 Κ=23 Κ=35

It should be noted that, under certain channel conditions, for example, for a channel with strong frequency selectivity, only six of the 12 sequences can be used in the frequency domain, and one sequence is separated between the two frequency domain sequences, so that 18 two-dimensional spreading sequences can be generated. See Table 9. These 18 sequences can be numbered as follows:

Table 9 shows the numbering of 18 two-dimensional spreading sequences.

Frequency domain sequence mark 0 1 2

0 κ=ο Κ=12

1 Κ=6

2 K=l Κ=13 3 Κ=7

4 K=2 Κ=14

5 Κ=8

6 K=3 Κ=15

7 Κ=9

8 Κ=4 Κ=16

9 Κ=10

10 Κ=5 Κ=17

11 Κ=11

104. The user equipment sends the data symbols in the data symbol group to the base station on the mapped response information channel.

In the embodiment of the present invention, after the user equipment maps each data symbol in the data symbol group to the at least one response information channel, the user equipment sends the data symbols in the data symbol group to the base station.

For example, if the response information mapping table stored in the user equipment is as shown in Table 6, when the user equipment receives data and each codeword of the two component carriers is received, the response information that the user equipment needs to feed back to the base station is HARQ. -ACK(O) ACK, HARQ-ACK(1) ACK, HARQ-ACK(2) ACK, HARQ-ACK(3) ACK, corresponding to Table 6, the channel that the user equipment needs to use to send uplink data to the base station is ACK Channel 0 and ACK channel 1, the transmitted data symbol group is the QPSK data symbol corresponding to the bit group ([1, 1], [1]) in the first row in Table 6, and the BPSK symbol base station can correspond to the ACK channel through the user equipment. Sending the data symbol of Ϊ to obtain the response information fed back by the user, for example, the base station provides the energy detection method to detect the ACK letter. After the user equipment sends the data symbol on the channel 0 and the ACK channel 1, the base station can obtain the ACK response channel group used by the user equipment as an ACK channel group (0, 1), and the base station demodulates the data symbols on the ACK channel group. The bit group sent by the user equipment is ([1, 1], [1]), and then, by searching the table 6, the base station can obtain the response information that the user equipment needs to feed back to the base station as HARQ-ACK(O). ACK, HARQ-ACK(1) ACK, HARQ-ACK(2) ACK, HARQ-ACK(3) ACK, the base station judges according to this, the user equipment receives the data, and each codeword of the two component carriers is correctly corrected by the user data. Received.

In the embodiment of the present invention, the user equipment finds the response information channel group and the data symbol group corresponding to the response information that needs to be fed back by searching the response information mapping table, and then the user equipment separates each data symbol in the data symbol group. Mapping to the at least one response information channel, the user equipment sends the data symbol in the data symbol group to the base station. In the embodiment of the present invention, the user equipment indicates a response message through a response information channel group and a data symbol group. When the downlink component carrier received by the device is multiple carriers, the response information channel group and the data symbol group corresponding to one type of response information may be used to indicate that the user equipment receives multiple downlink component carriers, which can be applied to the base station to configure the user equipment. The case of multiple downlink component carriers.

The above embodiment describes a method of transmitting response information implemented from the user equipment side. Next, a method of receiving response information implemented from the base station side will be described. Please refer to the embodiment shown in FIG. 6.

As shown in FIG. 6, the method for receiving the response information includes:

601. The base station detects a response information channel group used by the user equipment to feed back the response information, where each of the response information channel groups is mapped with at least one data symbol in the data symbol group.

In the embodiment of the present invention, when the user equipment accesses multiple downlink component carriers at the same time, the base station can transmit data to the user equipment on the physical downlink shared channel by using each downlink component carrier, and the user equipment generates feedback according to the situation of receiving data. Response information.

In the embodiment of the present invention, the base station allocates response information to the downlink component carrier in the carrier aggregation scenario. A channel, where the downlink component carrier is a configured or activated component carrier. When N downlink component carriers are assumed, the base station configures 2 ACK channels for each downlink component carrier, and 2N ACK channels exist in total, and N is a natural number.

For example, when N is 2, there are two downlink component carriers, and the base station allocates two ACK channels for each downlink component carrier, and has 4 ACK channels, and data transmission on each downlink component carrier of the two downlink component carriers. It is configured to support the transmission of two codewords at the maximum. Each codeword is independently channel-coded and independently performs reception check. Therefore, the response information corresponding to each codeword can be separately fed back.

In an actual application, the base station allocates a response information channel to the downlink component carrier. In an optional implementation manner, the base station uses a Control Channel Element (CCE) of the Physical Downlink Control Channel (PDCCH). A response information channel is assigned to the user. For example, one PDCCH is composed of 1, 2, 4 or 8 CCEs, and the number of CCEs constituting one PDCCH is related to the size of the control channel content and the channel quality of the user. When the channel quality of a user is poor, in order to improve the performance of the PDCCH, 8 CCEs may be used to transmit the PDCCH of the user, and the PDCCH of the user may adopt a very low coding rate to resist the fading of the channel. All the available CCEs in the base station have a number, so the two ACK channels corresponding to the downlink component carrier can be calculated and calculated by the number of the CCE corresponding to the PDCCH corresponding to the data transmission on the downlink component carrier, for example, by using the PDCCH. The numbered n-CCE with the lowest number in the corresponding CCE, and n-CCE+1 are calculated and derived. Another achievable manner is that the base station can semi-statically configure two ACK channels for the downlink component carrier, or the base station configures multiple pairs of ACK channels for the downlink component carrier, and each pair of ACK channels includes two ACK channels. Then, which pair of ACK signals of the plurality of pairs of ACK channels are used is indicated in the PDCCH when the ACK channel needs to be used. Another achievable manner is that, in combination with all the foregoing manners, for example, the base station calculates the ACK channel by using the CCE corresponding to the PDCCH for the downlink component carrier, and the base station directly configures two ACK channels or pairs for the downlink component carriers. ACK channel, the base station is on the same downlink The PDSCHs on different downlink subframes on the carrier are allocated corresponding answer information channels according to different allocation methods. In an actual application, any implementation manner or a combination thereof may be adopted. For example, different manners may be used according to different service types, and one mode is used for dynamically scheduling data services, and semi-persistent scheduling (SPS, Semi-persistent Scheduling) In another way, etc.

In a practical application, the base station detects that the response information channel group used by the user equipment to send the data symbol group can be implemented in the following manner: The base station obtains the response information channel group used by the user equipment to send the data symbol group by using the energy detection method or the coherent detection method. .

In the embodiment of the present invention, the base station can detect the response information channel group used by the data symbol sent by the user equipment. For example, when the base station detects that the user equipment sends the data symbol through the ACK channel 0 and the ACK channel 1, the base station can acquire the user equipment. The ACK channel group used is (0, 1).

It should be noted that, in the embodiment of the present invention, each response information channel in the response information channel group detected by the base station is mapped with at least one data symbol in the data symbol group, and all data in the data symbol group sent by the user equipment. The symbols are mapped to all of the response information channels in the response information channel group detected by the base station. For example, some of the response information channels in the response information channel group detected by the base station map one data symbol, and some map two data symbols.

602. The base station demodulates the data carried by the response information channel on the response information channel corresponding to the detected response information channel group to obtain a data symbol group.

In the embodiment of the present invention, after the base station detects the response information channel group in which the user equipment sends the data symbol, the base station demodulates the received data symbol. For example, when the base station demodulates the data carried by the response information channel group corresponding to the response information channel, it is a BPSK data symbol and

The QPSK symbol β = -1 , then through Table 2 and Table 4, the base station can obtain - ^" the bit group sent by the user equipment is ([1 , 1], [1] ).

In a practical application, the base station demodulates the data carried by the response information channel on the response information channel corresponding to the detected response information channel group to obtain a data symbol group, which may be: the base station solves the data carried by each response information channel. Tune, respectively, to get a data symbol in the data symbol group. With The base station may demodulate data carried in one time slot or two time slots of each response information channel corresponding to the response information channel group to obtain one data symbol in the data symbol group. For example, the response information that the user equipment needs to feed back in Table 6 is the response information (ACK, ACK, ACK, ACK) in the four channels in the first row in Table 6, and the data symbol corresponding to the response information that the user equipment needs to feed back. Groups are bit groups ([1, 1], [1]). The response information channel group detected by the base station is (0, 1), and the base station demodulates data carried in one time slot or two time slots of the response information channel 0 to obtain a data symbol in the data symbol group [1] , 1], the base station demodulates data carried in one time slot or two time slots of the response information channel 1, and another data symbol in the data symbol group can be obtained.

[1] Thus, the data symbol group that the base station can demodulate is ([1 , 1] , [1] ).

In a practical application, the base station demodulates the data carried by the response information channel on the response information channel corresponding to the detected response information channel group to obtain a data symbol group, which may be specifically: all two of the base station to the response information channel group. The data carried by the response information channel is demodulated, and each data symbol in the data symbol group is simultaneously mapped on the two response information channels. Specifically, the base station demodulates data carried by the first time slot of the first response information channel and the second time slot of the second response information channel to obtain one data symbol of the data symbol group; and the base station responds to the first response information channel. The data carried by the third time slot and the fourth time slot of the second response information channel are demodulated to obtain another data symbol of the data symbol group. For example, the response information that the user equipment needs to feed back in Table 6 is the response information (ACK, ACK, ACK, ACK) in the four channels in the first row in Table 6, and the data symbol corresponding to the response information that the user equipment needs to feed back. Groups are bit groups ([1, 1], [1]). The response information channel group detected by the base station is (0, 1), and the base station demodulates one time slot of the response information channel 0 and the data carried by one time slot of the response information channel 1, and one of the data symbol groups can be obtained. Data symbol [1, 1], the base station demodulates data carried by another time slot of the response information channel 0 and another time slot of the response information channel 1, and another data symbol in the data symbol group can be obtained [1] ], whereby the data symbol group that the base station can demodulate is ([1, 1], [1]).

In practical applications, the base station solves the response information channel corresponding to the detected response information channel group. Adjusting the data carried by the response information channel to obtain a data symbol group may further be: when the data symbol group includes two data symbols, the base station demodulates data carried by the two response information channels corresponding to the response information channel group, and obtains A data symbol of the data symbol group; the base station demodulates data carried by a response information channel corresponding to the response information channel group to obtain another data symbol of the data symbol group.

Specifically, when the data symbol group includes two data symbols, the base station demodulates data carried by the two response information channels corresponding to the response information channel group, and obtaining one data symbol of the data symbol group includes: the base station may respond to the first Demodulating data carried by the first time slot of the information channel and the second time slot of the second response information channel to obtain one data symbol of the data symbol group; or, the base station may be the first time slot of the first response information channel, The data carried by the third time slot of the response information channel and the second time slot of the second response information channel is demodulated to obtain one data symbol of the data symbol group.

Specifically, the base station demodulates the data carried by the response information channel corresponding to the response information channel group, and obtains another data symbol of the data symbol group. The base station demodulates the fourth time slot of the second response information channel to obtain data. Another data symbol for the symbol group.

For example, the response information that the user equipment needs to feed back in Table 6 is the response information (ACK, ACK, ACK, ACK) in the four channels in the first row in Table 6, and the data symbol corresponding to the response information that the user equipment needs to feed back. Groups are bit groups ([1, 1], [1]). The response information channel group detected by the base station is (0, 1), and the base station demodulates one time slot of the response information channel 0 and the data carried by one time slot of the response information channel 1, and one of the data symbol groups can be obtained. The data symbol [1, 1], or the base station detects the response information channel group is (0, 1), and the base station solves the two time slots of the response information channel 0 and the data carried by one time slot of the response information channel 1. To adjust, one data symbol [1, 1] in the data symbol group can be obtained, and the base station demodulates the data carried by the other time slot of the response information channel 1, and another data symbol in the data symbol group can be obtained. 1] Thus, the data symbol group that the base station can demodulate is ([1, 1], [1]).

603. The base station searches through the detected response information channel group and the demodulated data symbol group. The response information mapping table obtains response information fed back by the user equipment.

In the embodiment of the present invention, the base station searches the response information mapping table according to the detected response information channel group and the demodulated data symbol group, and finds the response information fed back by the user equipment. For example, the response information group obtained by the base station is an ACK channel group (0, 1) and a bit group corresponding to the data symbol group ([1, 1], [1]). Through the lookup table 6, the base station can obtain the user equipment needs to The response information fed back by the base station is HARQ-ACK (O) ACK, HARQ-ACK (1) ACK, HARQ-ACK (2) ACK, HARQ-ACK (3) ACK, and the base station determines that the user equipment receives the data as two. Each codeword of each component carrier is received by the user data.

It should be noted that the response information mapping table stored in the base station may be specifically as shown in Table 6. Of course, in the actual application, a plurality of response information and response information channels to be fed back may be derived according to the response information mapping table. The mapping table between groups and data symbol groups is merely illustrative and not limited.

In the embodiment of the present invention, the base station detects the response information channel group of the user equipment feedback response information, and demodulates the data symbol group sent by the user equipment. Finally, the base station obtains the response of the user equipment feedback by searching the response information mapping table. information. In the embodiment of the present invention, the user equipment indicates a type of response information through a response information channel group and a data symbol group. When the downlink component carrier received by the user equipment is multiple carriers, the information channel group and the data symbol can be acknowledged. The group corresponds to a type of response information to indicate that the user equipment receives the reception of multiple downlink component carriers, and is applicable to the case where the base station configures multiple downlink component carriers for the user equipment.

The above embodiment describes a method for transmitting and receiving a response message according to an embodiment of the present invention. Next, a user device using a method for transmitting the response message will be described. Referring to the embodiment shown in FIG.

As shown in FIG. 7, the user equipment 700 includes: a response information generating unit 701, a searching unit 702, a mapping unit 703, and a data symbol group sending unit 704, where

The response information generating unit 701 generates a downlink component carrier that is received by the user equipment 700. The response information corresponding to the data.

In the embodiment of the present invention, when the user equipment accesses multiple downlink component carriers at the same time, the base station can transmit data to the user equipment on the PDSCH through each downlink component carrier, and the response information generating unit 701 generates feedback that needs to be received according to the situation of receiving data. Answer the message.

In practical applications, the user equipment needs feedback response information. If it is full feedback, the response information to be fed back specifically includes three types: ACK, NACK, and DTX, that is, each codeword needs to feed back three states, which are ACK. NACK and DTX. The response information to be fed back may also include two types: ACK:, NACK/DTX, and is not specifically limited.

The searching unit 702 is configured to search the response information mapping table, and find a response information channel group and a data symbol group corresponding to the generated response information, where the response information channel included in the different response information channel group in the response information mapping table Not the same.

In the embodiment of the present invention, the response information to be fed back is respectively represented by different response information channel groups and different data symbol groups, and a response information mapping table may be formed. In the response information mapping table, the response information channel group is at least Two response information channels are included, different response information channel groups include different response information channels, and each response information channel includes two time slots.

In a practical application, when the base station configures two downlink component carriers for the user equipment, and each downlink component carrier allocates two response information channels, the searching unit 702 is specifically configured to look up the response information mapping table as described in Table 6. However, in different application scenarios, a mapping table between the response information to be fed back and the response information channel group and the data symbol group may be derived from the response information mapping table, which is not limited herein.

The mapping unit 703 is configured to map each data symbol in the data symbol group to at least one response information channel.

In the embodiment of the present invention, the transmission of the data symbol needs to be mapped to the ACK channel, and the mapping unit 703 maps each data symbol in the data symbol group corresponding to the response information that needs to be fed back to the at least one response information channel. In practical applications, the mapping unit 703 may be specifically configured to map each data symbol in the data symbol group to a response information channel, that is, each data symbol is uniquely mapped into a response information channel.

In a practical application, when the data symbol group includes two data symbols, the mapping unit 703 may specifically be configured to map one data symbol in the data symbol group to two response information channels; and another data symbol in the data symbol group. Map to an acknowledgement information channel.

In practical applications, when the data symbol group includes two data symbols, the mapping unit 703 can be specifically configured to map each data symbol in the data symbol group to two response information channels.

The data symbol group sending unit 704 is configured to send the data symbols in the data symbol group to the base station on the mapped response information channel, so that the base station can obtain the response information fed back by the user by receiving the data symbols in the data symbol group.

It should be noted that the information interaction, the execution process, and the like between the modules/units of the foregoing device are the same as the embodiment of the method of the present invention. Reference is made to the description in the method embodiment of the present invention, and details are not described herein again.

In the embodiment of the present invention, the searching unit 702 finds the response information channel group and the data symbol group corresponding to the response information that needs to be fed back by searching the response information mapping table, and then the mapping unit 703 sets each data in the data symbol group. The symbols are respectively mapped to at least one response information channel. Finally, in the embodiment, the user equipment indicates a response message through a response information channel group and a data symbol group. When the downlink component carrier received by the user equipment is multiple carriers, The response information channel group and the data symbol group correspond to one type of response information to indicate that the user equipment receives the reception of the plurality of downlink component carriers, and can be applied to the case where the base station configures multiple downlink component carriers for the user equipment.

The foregoing embodiment describes the user equipment provided by the embodiment of the present invention. Next, the base station provided by the embodiment of the present invention is introduced. As shown in FIG. 8, the base station 800 includes: a detecting unit 801, a demodulating unit 802, and a searching unit 803. The detecting unit 801 is configured to detect a response information channel group used by the user equipment to feed back response information, where each of the response information channel groups is mapped with at least one data symbol in the data symbol group.

In an actual application, the detecting unit 801 is specifically configured to obtain, by using an energy detecting method or a coherent detecting method, a response information channel group used by the user equipment to send a data symbol group.

The demodulation unit 802 is configured to demodulate data carried by the response information channel on the response information channel corresponding to the detected response information channel group to obtain a data symbol group, where each data symbol in the data symbol group is The user equipments are respectively mapped to at least one response information channel and then sent to the base station.

The searching unit 803 is configured to search the response information mapping table according to the detected response information channel group and the demodulated data symbol group, and obtain response information fed back by the user equipment.

In an actual implementation, the demodulation unit 802 is specifically configured to demodulate data carried by each response information channel in the response information channel group to obtain a data symbol group. A data symbol in .

In an actual implementation, an optional implementation manner of the demodulation unit 802 is: when the data symbol group includes two data symbols, the demodulation unit 802 is specifically configured to use all two response information channels in the response information channel group. The carried data is demodulated, and each of the data symbol groups is simultaneously mapped to the data symbols on the two response information channels; and the data carried by the response information channel corresponding to the response information channel group is demodulated to obtain the data symbols. Another data symbol for the group.

In an actual implementation, an optional implementation manner of the demodulation unit 802 is: when the data symbol group includes two data symbols, the demodulation unit 802 is specifically configured to carry two response information channel bearers corresponding to the response information channel group. The data is demodulated to obtain two data symbols of the data symbol group.

It should be noted that the response information mapping table stored in the base station may be specifically as shown in Table 6, and details are not described herein again. Of course, in the actual application, a mapping table between the response information to be fed back and the response information channel group and the data symbol group may be derived according to the response information mapping table. The illustration is not limited.

In the embodiment of the present invention, the detecting unit 801 detects the response information channel group corresponding to the user equipment, and the demodulating unit 802 demodulates the data symbol group sent by the user equipment. Finally, the searching unit 803 obtains the response information mapping table. The response message to the user device feedback. In the embodiment of the present invention, the user equipment indicates a type of response information through a response information channel group and a data symbol group. When the downlink component carrier received by the user equipment is multiple carriers, the response information channel group and the data symbol may be used. The group corresponds to a type of response information to indicate that the user equipment receives the reception of multiple downlink component carriers, and is applicable to the case where the base station configures multiple downlink component carriers for the user equipment.

A person skilled in the art can understand that all or part of the steps of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium, and the above mentioned storage medium can be It is a read-only memory, a disk or a disc.

The method for transmitting the response information, the receiving method, the user equipment, and the base station provided by the present invention are described in detail. For those skilled in the art, according to the idea of the embodiment of the present invention, in the specific implementation manner and application scope There are variations, and therefore, the description should not be construed as limiting the invention.

+

Claims

Rights request

A method for transmitting response information, comprising: generating, by a user equipment, response information corresponding to data carried by a downlink component carrier received by the user equipment;

The method for transmitting the response information according to claim 1, wherein the mapping, by the user equipment, each of the data symbol groups to the at least one response information channel includes: Each of the data symbol groups is mapped to a response information channel; or

The user equipment maps each of the data symbol groups to two acknowledgment information channels.

The method for transmitting the response information according to claim 2, wherein the mapping, by the user equipment, each data symbol in the data symbol group to a response information channel includes: Each data symbol in the data symbol group is respectively mapped to one time slot or two time slots of one response information channel; the user equipment maps each data symbol in the data symbol group to two response information respectively The channel includes: The user equipment maps each of the data symbol groups to one time slot of two acknowledgment information channels.

The method for transmitting response information according to claim 2, wherein the data symbol group includes two data symbols;

The user equipment mapping each data symbol in the data symbol group to two response information channels includes:

The user equipment maps one data symbol in the data symbol group to a first time slot of a first response information channel and a second time slot of a second response information channel;

The user equipment maps another data symbol in the data symbol group to a third time slot of the first response information channel and a fourth time slot of the second response information channel.

The method for transmitting response information according to claim 1, wherein the data symbol group includes two data symbols; and the user equipment maps each data symbol in the data symbol group to at least A response information channel includes:

The user equipment maps one of the data symbol groups to two acknowledgment information channels; the user equipment maps another data symbol of the data symbol group to an acknowledgment information channel.

The method for transmitting response information according to claim 5, wherein the data symbol group includes two data symbols;

Mapping, by the user equipment, one data symbol in the data symbol group to two response information channels includes:

The user equipment maps one data symbol in the data symbol group to a first time slot of a first response information channel and a second time slot of a second response information channel; or, the user equipment uses the data symbol One data symbol in the group is mapped to a first time slot of the first response information channel, a third time slot of the first response information channel, and a second time slot of the second response information channel; the user equipment uses the data symbol Another data symbol in the group is mapped to a reply letter The information channel includes:

The user equipment maps another data symbol in the set of data symbols to a fourth time slot of the second acknowledgement information channel.

The method for transmitting response information according to claim 1, wherein when the base station configures two downlink component carriers for the user equipment, and each downlink component carrier allocates two response information channels, the The response information mapping table is specifically:

Response information to be sent back

HARQ-ACK HARQ-ACK HARQ-ACK HARQ-ACK

(0) (1) (2) (3) Group Data symbol group

(a0, al) 1

ACK ACK ACK ACK (0, 1)

(b0, bl)_l

ACK NACK/DTX ACK ACK (2, 3)

(a0, al) 2

NACK/DTX ACK ACK ACK (0, 1)

(bO, bl)_2

NACK/DTX NACK/DTX ACK ACK (2, 3)

(a0, al) 3

ACK ACK ACK NACK/DTX (0, 1)

(bO, bl)_3

ACK NACK/DTX ACK NACK/DTX (2, 3)

(a0, al) 4

NACK/DTX ACK ACK NACK/DTX (0, 1)

(bO, bl)_4

NACK/DTX NACK/DTX ACK NACK/DTX (2, 3)

(bO, bl)_5

ACK ACK NACK/DTX ACK (2, 3)

(bO, bl)_6

ACK NACK/DTX NACK/DTX ACK (2, 3)

(bO, bl)_7

NACK/DTX ACK NACK/DTX ACK (2, 3)

(bO, bl)_8

NACK/DTX NACK/DTX NACK/DTX ACK (2, 3) (a0, al) 5

ACK ACK NACK/DTX NACK/DTX ( 0, 1 )

(a0, al) 6

ACK NACK/DTX NACK/DTX NACK/DTX ( 0, 1 )

(a0, al) 7

NACK/DTX ACK NACK/DTX NACK/DTX ( 0, 1 )

(a0, al)_8

NACK/DTX NACK NACK/DTX NACK/DTX ( 0, 1 )

(a0, al)_8

NACK NACK/DTX NACK/DTX NACK/DTX ( 0, 1 )

DTX DTX NACK/DTX NACK/DTX does not send any data

The HARQ-ACK (0) represents the reception response information corresponding to the first codeword on the first downlink component carrier, and the HARQ-ACK (1) represents the second codeword corresponding to the first downlink component carrier. Receiving response information, HARQ-ACK (2) represents the reception response information corresponding to the first codeword on the second downlink component carrier, and HARQ-ACK (3) represents the second codeword on the second downlink component carrier. Corresponding receiving response information; ACK indicates that the user equipment correctly receives the codeword, NACK indicates that the user equipment receives the codeword error, DTX indicates that the user equipment does not receive the codeword, and NACK/DTX indicates that the user equipment receives the error or does not receive the codeword. To the codeword; (0, 1) represents a response information channel group, including the response information channel 0 and the response information channel 1, and the response information channel 0 and the response information channel 1 are respectively allocated by the base station for the first downlink component carrier. Two response information channels, (2, 3) represent another response information channel group, including response information channel 2 and response information channel 3, and response information channel 2 and response information channel 3 are respectively The base station allocates two response information channels for the second downlink component carrier; (a0, al) - i represents a data symbol group, i = l, 2, 8, and represents different data symbol groups when i takes different values , (b0, bl)J represents the data symbol group, j=l, 2, 8, when j takes a different value, it represents a different data symbol group.

8. The method of claim transmitting response information according to claim 7, wherein each set of data symbols (a0, al) - i, the value of a0 in which a data symbol of Q _m, of Al The value is one of Q _m , m=0, 1 , 2, 3 , and the value of the Q _m is as shown in the following table;

β = -J

β ₃ = - 1 When i takes different values, the values of a0 in the data symbol group (a0, al)-i are different, or the values of al are different, or the values of a0 and al are different. ;

In each set of data symbol groups (b0, bl) J, the value of b0 is one of the data symbols Q _m , and the value of bl is one of (^, m=0, 1 , 2, 3 , Q The value of _m is as shown in the above table. When j takes different values, the values of b0 in the data symbol group (b0, bl) J are different, or the values of bl are different, or the values of b0 and bl are different. They are all different.

9, according to the response information transmission method as claimed in claim 7, wherein each set of data symbols (a0, al) - i, the value of a0 in which a data symbol of P _m, m = 0, 1 , 2, the value of the P _m is shown in the following table:

p ₀ = 1

= exp{j 2π/3} p ₂ = exp{j 4π/3} When i takes different values, the values of a0 in the data symbol group (a0, al)-i are different, or the respective values of al are taken The values are different, or the values of a0 and al are different respectively;

In each set of data symbol groups (b0, bl) J, the value of b0 is one of the data symbols P _m , and the value of bl is one of P _m , m = 0, 1 , 2, P _m The values are as shown in the above table. When j takes different values, the values of b0 in the data symbol group (b0, bl) J are different, or the values of bl are different, or the values of b0 and bl are different. .

The method for transmitting response information according to any one of claims 1 to 9, wherein when the base station configures two downlink component carriers for the user equipment, each downlink component carrier is allocated. When two response information channels are used, the response information mapping table is specifically:

Response information to be sent back to the answer letter data symbol group

HARQ-ACK HARQ-ACK HARQ-ACK HARQ-ACK bit corresponding to bits (0) (1) (2) (3) Group

ACK ACK ACK ACK (0, 1) ([1, 1], [1])

ACK NACK/DTX ACK ACK (2, 3) ([0, 1], [1])

NACK/DTX ACK ACK ACK (0, 1) ([0, 1], [1])

NACK/DTX NACK/DTX ACK ACK (2, 3) ([1, 1], [1])

ACK ACK ACK NACK/DTX (0, 1) ([1, 0], [1])

ACK NACK/DTX ACK NACK/DTX (2, 3) ([0, 0], [1])

NACK/DTX ACK ACK NACK/DTX (0, 1) ([0, 0], [1])

NACK/DTX NACK/DTX ACK NACK/DTX (2, 3) ([1, 0], [1])

ACK ACK NACK/DTX ACK (2, 3) ([1, 1], [0])

ACK NACK/DTX NACK/DTX ACK (2, 3) ([1, 0], [0] )

NACK/DTX ACK NACK/DTX ACK (2, 3) ([0, 1], [0] )

NACK/DTX NACK/DTX NACK/DTX ACK (2, 3) ([0, 0], [0])

ACK ACK NACK/DTX NACK/DTX (0, 1) ([1, 1], [0] )

ACK NACK/DTX NACK/DTX NACK/DTX (0, 1) ([1, 0], [0])

NACK/DTX ACK NACK/DTX NACK/DTX (0, 1) ([0, 1], [0])

NACK/DTX NACK NACK/DTX NACK/DTX (0, 1) ([0, 0], [0]) NACK NACK/DTX NACK/DTX NACK/DTX ( 0, 1 ) ( [0, 0], [0] )

DTX DTX NACK/DTX NACK/DTX does not send any data

The HARQ-ACK (0) represents the reception response information corresponding to the first codeword on the first downlink component carrier, and the HARQ-ACK (1) represents the second codeword corresponding to the first downlink component carrier. Receiving response information, HARQ-ACK (2) represents the reception response information corresponding to the first codeword on the second downlink component carrier, and HARQ-ACK (3) represents the second codeword on the second downlink component carrier. Corresponding receiving response information; ACK indicates that the user equipment correctly receives the codeword, NACK indicates that the user equipment receives the codeword error, DTX indicates that the user equipment does not receive the codeword, and NACK/DTX indicates that the user equipment receives the error or does not receive the codeword. To the codeword; (0, 1) represents a response information channel group, including the response information channel 0 and the response information channel 1, and the response information channel 0 and the response information channel 1 are respectively allocated by the base station for the first downlink component carrier. Two response information channels, (2, 3) represent another response information channel group, including response information channel 2 and response information channel 3, and response information channel 2 and response information channel 3 are respectively The base station allocates two response information channels for the second downlink component carrier, ([1, 1], [1]), ([0, 1], [1]), ([1, 0], [1 】), ([1, 1], [0]), ([1, 0], [0]), ([0, 1], [0] ), ([0, 0], [0] ) ([0, 0], [1]) respectively represent bit symbol groups corresponding to the data symbol groups that need to be fed back under different response information to be fed back.

A method for receiving response information, comprising: detecting, by a base station, a response information channel group used by a user equipment for feeding back response information, wherein each response information channel in the response information channel group is mapped with a data symbol At least one data symbol in the group; the base station demodulates the data carried by the response information channel to obtain a data symbol group on the response information channel corresponding to the detected response information channel group;

The method for receiving response information according to claim 11, wherein the base station demodulates data carried by the response information channel on a response information channel corresponding to the detected response information channel group to obtain a data symbol. The group includes:

The number of acknowledgment information channel bearers of each of the response information channel groups by the base station Demodulating, respectively, obtaining one data symbol in the data symbol group; or, the base station demodulating data carried by all two response information channels in the response information channel group to obtain the data symbol Each of the groups simultaneously maps data symbols on the two response information channels.

The method for receiving response information according to claim 12, wherein the base station demodulates data carried by each response information channel corresponding to the response information channel group to obtain the data symbol group. One data symbol includes: the base station demodulates data carried in one time slot or two time slots of each response information channel corresponding to the response information channel group, and respectively obtains one data in the data symbol group Symbol

Decoding, by the base station, data carried by all two response information channels in the response information channel group, to obtain each data symbol simultaneously mapped on the two response information channels, including: the base station responding to the Demodulating one of the data symbol groups on each of the two time slots of the information channel group, and demodulating the other one of the two response channels Another data symbol in the data symbol group.

The method for receiving response information according to claim 12, wherein when the data symbol group includes two data symbols, the base station performs all two response information channel bearers in the response information channel group. Demodulating the data to obtain each of the data symbol groups and simultaneously mapping the data symbols on the two response information channels includes:

The base station demodulates data carried by the first time slot of the first response information channel and the second time slot of the second response information channel to obtain one data symbol of the data symbol group; the base station pairs the first response information The data carried by the third time slot of the channel and the fourth time slot of the second response information channel is demodulated to obtain another data symbol of the data symbol group.

The method for receiving response information according to claim 11, wherein the number is The symbol group includes two data symbols; the base station demodulates the data carried by the response information channel on the response information channel corresponding to the detected response information channel group to obtain a data symbol group including: the base station responding to the Demodulating data carried by two response information channels corresponding to the information channel group to obtain one data symbol of the data symbol group; the base station demodulating data carried by a response information channel corresponding to the response information channel group , obtaining another data symbol of the data symbol group.

The method for receiving response information according to claim 15, wherein the base station demodulates data carried by two response information channels corresponding to the response information channel group to obtain one of the data symbol groups. The data symbol includes: the base station demodulating data carried by the first time slot of the first response information channel and the second time slot of the second response information channel to obtain one data symbol of the data symbol group; or Decoding a data carried by the first time slot of the first response information channel, the third time slot of the first response information channel, and the second time slot of the second response information channel to obtain a data symbol of the data symbol group The base station demodulates data carried by the response information channel corresponding to the response information channel group to obtain another data symbol of the data symbol group, including: the fourth time slot of the base station to the second response information channel Demodulation is performed to obtain another data symbol of the data symbol group.

The method for receiving response information according to claim 11, wherein when the base station configures two downlink component carriers for the user equipment, and each downlink component carrier allocates two response information channels, the The response information mapping table is specifically:

Response information to be sent back

HARQ-ACK HARQ-ACK HARQ-ACK HARQ-ACK

(0) (1) (2) (3) Group Data symbol group

ACK ACK ACK ACK ( 0, (a0, al) _l

1 ) (b0, bl)_l

ACK NACK/DTX ACK ACK (2, 3)

(aO, al)_2

NACK/DTX ACK ACK ACK (0, 1)

(b0, bl)_2

NACK/DTX NACK/DTX ACK ACK (2, 3)

(a0, al)_3

ACK ACK ACK NACK/DTX (0, 1)

(b0, bl)_3

ACK NACK/DTX ACK NACK/DTX (2, 3)

(aO, al)_4

NACK/DTX ACK ACK NACK/DTX (0, 1)

(b0, bl)_4

NACK/DTX NACK/DTX ACK NACK/DTX (2, 3)

(b0, bl)_5

ACK ACK NACK/DTX ACK (2, 3)

(b0, bl)_6

ACK NACK/DTX NACK/DTX ACK (2, 3)

(b0, bl)_7

NACK/DTX ACK NACK/DTX ACK (2, 3)

(b0, bl)_8

NACK/DTX NACK/DTX NACK/DTX ACK (2, 3)

(a0, al)_5

ACK ACK NACK/DTX NACK/DTX (0, 1)

(a0, al)_6

ACK NACK/DTX NACK/DTX NACK/DTX (0, 1)

(aO, al)_7

NACK/DTX ACK NACK/DTX NACK/DTX (0, 1)

(aO, al)_8

NACK/DTX NACK NACK/DTX NACK/DTX (0, 1)

(aO, al)_8

NACK NACK/DTX NACK/DTX NACK/DTX (0, 1)

DTX DTX NACK/DTX NACK/DTX does not send any data

The HARQ-ACK (0) represents the reception response information corresponding to the first codeword on the first downlink component carrier, and the HARQ-ACK (1) represents the second codeword corresponding to the first downlink component carrier. Receiving response information, HARQ-ACK (2) represents the reception response information corresponding to the first codeword on the second downlink component carrier, and HARQ-ACK (3) represents the second codeword on the second downlink component carrier. Corresponding receiving response information; ACK indicates that the user equipment receives the correct codeword, and NACK indicates that the user sets The codeword receives an error, DTX indicates that the user equipment does not receive the codeword, NACK/DTX indicates that the user equipment receives the codeword error or does not receive the codeword; (0, 1) indicates a response information channel group, including the response information. Channel 0 and response information channel 1, response information channel 0 and response information channel 1 are respectively two response information channels allocated by the base station for the first downlink component carrier, and (2, 3) represents another response information channel group. The response information channel 2 and the response information channel 3 are included, and the response information channel 2 and the response information channel 3 are respectively two response information channels allocated by the base station for the second downlink component carrier; (a0, al) - i represents a data symbol Group, i=l, 2, 8, when i takes different values, it means different data symbol groups, (b0, bl)J represents data symbol group, j=l, 2, 8, when j takes different values Represents a different set of data symbols.

18. The response information receiving method according to claim 17, wherein each set of data symbols (a0, al) - i, the value of a0 in which a data symbol of Q _m, of Al The value is one of Q _m , m=0, 1 , 2, 3 , and the value of the Q _m is as shown in the following table;

Q ₂ = J

When i takes different values, the values of a0 in the data symbol group (a0, al)-i are different, or the values of al are different, or the values of a0 and al are different; each set of data In the symbol group (b0, bl) J, the value of b0 is one of the data symbols Q _m , and the value of bl is one of (^, m=0, 1 , 2, 3 , Q _m The values are as shown in the above table. When j takes different values, the values of b0 in the data symbol group (b0, bl) J are different, or the values of bl are different, or the values of b0 and bl are different. .

19. The response information receiving method according to claim 17, wherein each set of data symbols (a0, al) - i, the value of the data symbols a0 P _m is one, m = 0, 1 , 2, the value of the P _m is shown in the following table: p ₀ =1

= exp{j 2π/3} p ₂ = exp{j 4π/3} When i takes different values, the values of a0 in the data symbol group (a0, al)-i are different, or the respective values of al are taken The values are different, or the values of a0 and al are different. For each set of data symbols (bO, bl) J, the value of bO is one of the data symbols P _m , and the value of bl is P _m . The values of one, m=0, 1, 2, P _m are as shown in the above table. When j takes different values, the values of bO in the data symbol group (bO, bl) J are different, respectively, or bl respectively. The values are different, or the values of bO and bl are different.

The method for receiving response information according to any one of claims 11 to 19, wherein when the base station configures two downlink component carriers for the user equipment, each downlink component carrier allocates two responses. In the information channel, the response information mapping table is specifically:

Response information to be sent back to the answer letter data symbol group

ACK ACK ACK ACK (0, 1) ([1, 1], [1])

ACK NACK/DTX ACK ACK (2, 3) ([0, 1], [1] )

NACK/DTX ACK ACK ACK (0, 1) ([0, 1], [1] )

NACK/DTX NACK/DTX ACK ACK (2, 3) ([1, 1], [1])

ACK ACK ACK NACK/DTX (0, 1) ([1, 0], [1] )

ACK NACK/DTX ACK NACK/DTX (2, 3) ([0, 0], [1] )

NACK/DTX ACK ACK NACK/DTX (0, 1) ([0, 0], [1] ) NACK/DTX NACK/DTX ACK NACK/DTX (2, 3) ([1, 0], [1])

ACK ACK NACK/DTX ACK (2, 3) ([1, 1], [0])

ACK NACK/DTX NACK/DTX ACK (2, 3) ([1, 0], [0] )

NACK/DTX ACK NACK/DTX ACK (2, 3) ([0, 1], [0] )

NACK/DTX NACK/DTX NACK/DTX ACK (2, 3) ([0, 0], [0] )

ACK ACK NACK/DTX NACK/DTX (0, 1) ([1, 1], [0] )

ACK NACK/DTX NACK/DTX NACK/DTX (0, 1) ([1, 0], [0] )

NACK/DTX ACK NACK/DTX NACK/DTX (0, 1) ([0, 1], [0] )

NACK/DTX NACK NACK/DTX NACK/DTX (0, 1) ([0, 0], [0] )

NACK NACK/DTX NACK/DTX NACK/DTX (0, 1) ([0, 0], [0] )

DTX DTX NACK/DTX NACK/DTX does not send any data

The HARQ-ACK (0) represents the reception response information corresponding to the first codeword on the first downlink component carrier, and the HARQ-ACK (1) represents the second codeword corresponding to the first downlink component carrier. Receiving response information, HARQ-ACK (2) represents the reception response information corresponding to the first codeword on the second downlink component carrier, and HARQ-ACK (3) represents the second codeword on the second downlink component carrier. Corresponding receiving response information; ACK indicates that the user equipment correctly receives the codeword, NACK indicates that the user equipment receives the codeword error, DTX indicates that the user equipment does not receive the codeword, and NACK/DTX indicates that the user equipment receives the error or does not receive the codeword. To the codeword; (0, 1) represents a response information channel group, including the response information channel 0 and the response information channel 1, and the response information channel 0 and the response information channel 1 are respectively allocated by the base station for the first downlink component carrier. Two response information channels, (2, 3) representing another response information channel group, including a response information channel 2 and a response information channel 3, and the response information channel 2 and the response information channel 3 are respectively the second base station. Two acknowledgment information channels allocated by the downlink member carrier, ([1, 1], [1]), ([0, 1], [1]), ([1, 0], [1]), ([ 1, 1], [0]), ([1, 0], [0]), ([0, 1], [0] ), ([0, 0], [0] ), ([0, 0], [1]) respectively indicate that they are different The bit symbol group corresponding to the data symbol group that needs to be fed back under the feedback information.

A user equipment, comprising: a response information generating unit, configured to generate response information corresponding to data carried by the downlink component carrier received by the user equipment; and a searching unit, configured to search a response information mapping table, Finding a response information channel group and a data symbol group corresponding to the response information, wherein different response information channel groups included in the response information mapping table are different in response information channels; a mapping unit configured to use the data Each of the data symbols in the symbol group is mapped to at least one response information channel;

And a data symbol group sending unit, configured to send the data symbols in the data symbol group to the base station on the mapped response information channel.

The user equipment according to claim 21, wherein the mapping unit is specifically configured to map each data symbol in the data symbol group to a response information channel respectively; or, the mapping unit is specific For mapping each data symbol in the data symbol group to two response information channels.

The user equipment according to claim 22, wherein the data symbol group includes two data symbols, and the mapping unit is specifically configured to map one data symbol in the data symbol group to two responses. An information channel; mapping another data symbol in the set of data symbols to a response information channel.

The user equipment according to claim 21, wherein when the base station configures two downlink component carriers for the user equipment, and each downlink component carrier allocates two response information channels, the searching The unit is specifically used to look up the response information mapping table as follows:

Response information to be sent back

HARQ-ACK HARQ-ACK HARQ-ACK HARQ-ACK

(0) (1) (2) (3) Group data symbol group (aO, al)_l

ACK ACK ACK ACK (0, 1)

(b0, bl)_l

ACK NACK/DTX ACK ACK (2, 3)

(aO, al)_2

NACK/DTX ACK ACK ACK (0, 1)

(b0, bl)_2

NACK/DTX NACK/DTX ACK ACK (2, 3)

(a0, al)_3

ACK ACK ACK NACK/DTX (0, 1)

(b0, bl)_3

ACK NACK/DTX ACK NACK/DTX (2, 3)

(aO, al)_4

NACK/DTX ACK ACK NACK/DTX (0, 1)

(b0, bl)_4

NACK/DTX NACK/DTX ACK NACK/DTX (2, 3)

(b0, bl)_5

ACK ACK NACK/DTX ACK (2, 3)

(b0, bl)_6

ACK NACK/DTX NACK/DTX ACK (2, 3)

(b0, bl)_7

NACK/DTX ACK NACK/DTX ACK (2, 3)

(b0, bl)_8

NACK/DTX NACK/DTX NACK/DTX ACK (2, 3)

(a0, al)_5

ACK ACK NACK/DTX NACK/DTX (0, 1)

(a0, al)_6

ACK NACK/DTX NACK/DTX NACK/DTX (0, 1)

(aO, al)_7

NACK/DTX ACK NACK/DTX NACK/DTX (0, 1)

(aO, al)_8

NACK/DTX NACK NACK/DTX NACK/DTX (0, 1)

(aO, al)_8

NACK NACK/DTX NACK/DTX NACK/DTX (0, 1)

DTX DTX NACK/DTX NACK/DTX does not send any data

The HARQ-ACK (0) represents the reception response information corresponding to the first codeword on the first downlink component carrier, and the HARQ-ACK (1) represents the second codeword corresponding to the first downlink component carrier. Receiving response information, HARQ-ACK (2) indicating the first codeword corresponding to the second downlink component carrier Receive response information, HARQ-ACK (3) indicates the reception response information corresponding to the second codeword on the second downlink component carrier; ACK indicates that the user equipment correctly receives the codeword, and NACK indicates that the user equipment receives the error on the codeword DTX indicates that the user equipment does not receive the codeword, NACK/DTX indicates that the user equipment receives the codeword error or does not receive the codeword; (0, 1) indicates a response information channel group, including the response information channel 0 and the response information channel. 1 . The response information channel 0 and the response information channel 1 are respectively two response information channels allocated by the base station for the first downlink component carrier, and (2, 3) represents another response information channel group, including the response information channel 2 and The response information channel 3, the response information channel 2 and the response information channel 3 are respectively two response information channels allocated by the base station for the second downlink component carrier; (aO, al) - i represents a data symbol group, i = l, 2, 8, when i takes different values, it represents different data symbol groups, (b0, bl) J represents the data symbol group, j=l, 2, 8, when j takes different values, it represents different data symbol groups. .

A base station, comprising: a detecting unit, configured to detect a response information channel group used by the user equipment to feed back response information, where each response information channel in the response information channel group is mapped with a data symbol At least one data symbol in the group; a demodulation unit, configured to demodulate data carried by the response information channel to obtain a data symbol group on the response information channel corresponding to the detected response information channel group; The response information mapping table is searched by the detected response information channel group and the demodulated data symbol group, and the response information fed back by the user equipment is obtained.

The base station according to claim 25, wherein the demodulation unit is configured to demodulate data carried by each of the response information channels in the response information channel group to obtain the data symbols respectively. a data symbol in the group;

Or the demodulation unit is configured to demodulate data carried by all two response information channels in the response information channel group, and obtain that each of the data symbol groups is simultaneously mapped to the two response information. The data symbol on the channel.

The base station according to claim 25, wherein the data symbol group includes two data symbols; The demodulation unit is configured to demodulate data carried by two response information channels corresponding to the response information channel group to obtain one data symbol of the data symbol group; and corresponding to the response information channel group The data carried by the response information channel is demodulated to obtain another data symbol of the data symbol group.

The base station according to claim 25, wherein when the base station is configured with two downlink component carriers, and each downlink component carrier is allocated two response information channels, the searching unit is specifically configured to look up as follows: The response information mapping table:

Response information to be sent back

HARQ-ACK HARQ-ACK HARQ-ACK HARQ-ACK

(0) (1) (2) (3) Group Data symbol group

(a0, al)_l

ACK ACK ACK ACK (0, 1)

(b0, bl)_l

ACK NACK/DTX ACK ACK (2, 3)

(aO, al)_2

NACK/DTX ACK ACK ACK (0, 1)

(b0, bl)_2

NACK/DTX NACK/DTX ACK ACK (2, 3)

(a0, al)_3

ACK ACK ACK NACK/DTX (0, 1)

(b0, bl)_3

ACK NACK/DTX ACK NACK/DTX (2, 3)

(aO, al)_4

NACK/DTX ACK ACK NACK/DTX (0, 1)

(b0, bl)_4

NACK/DTX NACK/DTX ACK NACK/DTX (2, 3)

(b0, bl)_5

ACK ACK NACK/DTX ACK (2, 3)

(b0, bl)_6

ACK NACK/DTX NACK/DTX ACK (2, 3)

(b0, bl)_7

NACK/DTX ACK NACK/DTX ACK (2, 3)

(b0, bl)_8

NACK/DTX NACK/DTX NACK/DTX ACK (2, 3) (aO, al)_5

ACK ACK NACK/DTX NACK/DTX (0, 1)

(a0, al)_6

ACK NACK/DTX NACK/DTX NACK/DTX (0, 1)

(aO, al)_7

NACK/DTX ACK NACK/DTX NACK/DTX (0, 1)

(a0, al)_8

NACK/DTX NACK NACK/DTX NACK/DTX (0, 1)

(a0, al)_8

NACK NACK/DTX NACK/DTX NACK/DTX (0, 1)

DTX DTX NACK/DTX NACK/DTX does not send any data

The HARQ-ACK (0) represents the reception response information corresponding to the first codeword on the first downlink component carrier, and the HARQ-ACK (1) represents the second codeword corresponding to the first downlink component carrier. Receiving response information, HARQ-ACK (2) represents the reception response information corresponding to the first codeword on the second downlink component carrier, and HARQ-ACK (3) represents the second codeword on the second downlink component carrier. Corresponding receiving response information; ACK indicates that the user equipment correctly receives the codeword, NACK indicates that the user equipment receives the codeword error, DTX indicates that the user equipment does not receive the codeword, and NACK/DTX indicates that the user equipment receives the error or does not receive the codeword. To the codeword; (0, 1) represents a response information channel group, including the response information channel 0 and the response information channel 1, and the response information channel 0 and the response information channel 1 are respectively allocated by the base station for the first downlink component carrier. Two response information channels, (2, 3) represent another response information channel group, including response information channel 2 and response information channel 3, and response information channel 2 and response information channel 3 are respectively The base station allocates two response information channels for the second downlink component carrier; (aO, al) - i represents a data symbol group, i = 1, 2, 8, and when i takes different values, represents different data symbol groups, (b0, bl) J denotes a data symbol group, j=l, 2, 8. When j takes a different value, it represents a different data symbol group.