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    • 专利摘要:
    method and apparatus for transmitting uplink control information. The present invention relates to a method and apparatus for transmitting uplink (uci) control information. the method includes: determining a codeword corresponding to the uci between multiple codewords according to a predefined rule when the uci is transmitted over a shared physical uplink channel (pusch) with the multiple codewords (101); and transmitting the uci by mapping the uci to the corresponding codeword (102). The apparatus includes a determination unit and a transmitter unit. The method and apparatus provide a solution for uci transmission in a pusch with multiple codewords. This solution can be easily implemented based on lte r8 without involving much additional standardization work.
    公开号:BR112012014101B1
    申请号:R112012014101-5
    申请日:2010-12-07
    公开日:2019-03-19
    发明作者:Yongxia Lv；Yan Cheng
    申请人:Huawei Technologies Co., Ltd.；
    IPC主号:
    专利说明:

    Descriptive Report of the Invention Patent for METHOD AND APPARATUS FOR TRANSMITTING UPBACK CONTROL INFORMATION.
    This application claims priority for Chinese Patent Application No. 200910254310.5, filed with the Chinese Patent Office on December 7, 2009 and entitled “METHOD AND APPARATUS FOR TRANSMITTING UPLINK CONTROL INFORMATION”, which is hereby incorporated as a reference in its entirety.
    FIELD OF THE INVENTION
    The present invention relates to the field of wireless communication and, in particular, to a method and apparatus for transmitting uplink control (UCI) information and, more particularly, to a method and apparatus for the transmission of UCI in a shared physical uplink channel (PUSCH) with multiple code words.
    BACKGROUND OF THE INVENTION
    In a long-term evolution wireless communication system (LTE) R8, in order to support technologies such as dynamic programming, multiple input and multiple output (MIMO) transmission and hybrid automatic repeat request (HARQ), a terminal needs to return a variety of UCIs to an eNode B through a physical uplink control channel (PUCCH) and a PUSCH. The UCI examples are a channel quality indication, a coding matrix indication 25, and a desired recognition information for HARQ. Specifically, the UCI returned via a PUSCH includes: channel quality information (CQI), a punctuation indication (RI), and a hybrid auto-repeat request recognition (HARQACK). When a MIMO transmission mode is a multiplexing with 30 closed-loop space division and multiple user MIMO (MU-MIMO), the
    Petition 870180013947, of 02/21/2018, p. 4/106
    2/24
    CQI includes channel quality indication information and coding matrix indication information; in other transmission modes, CQI is channel quality indication information.
    In LTE R8, PUSCH supports only one code word in a transmission time interval (TTI). The code word corresponds to bits of a transport block after channel coding. When the ICU and data need to be sent via PUSCH in the same TTI, the detailed procedure is as follows:
    (1) The terminal calculates the number of modulation symbols for several UCIs;
    (2) The terminal calculates the number of bits of several UCIs after a channel encoding;
    (3) The terminal performs operations related to channel encoding for the data, CQI, RI, and HARQ-ACK, then multiplexes the encoded data and the encoded CQI, and finally performs a channel interleaving for the multiplexed bits, the RI encoded bits, and the HARQ-ACK encoded bits;
    (4) The terminal performs a series of operations, such as scrambling, modulation, discrete Fourier transform (DFT), and resource mapping for the bits that have passed through a channel interlacing, and then sends the bits to the eNode B;
    (5) eNode B processes the received bits, and performs a channel deinterlacing and demultiplexing to separate the CQI, RI and HARQ-ACK from the data; and (6) eNode B performs a channel decoding, judging whether the transmitted UCI is correct. If the UCI transmitted is correct, eNode B will obtain bits of original information from the transmitted CQI, RI and HARQ-ACK.
    The preceding method is a method for transmitting UCI, in which PUSCH supports a code word in a TTI. With the evolution of technologies, a PUSCH can support multiple code words in a TTI. For example, when spatial multiplexing technology with time domain layer
    3/24 time domain layer is adopted, a PUSCH supports up to two code words in a TTI. Therefore, it is necessary to create a method for the transmission of UCI in which a PUSCH supports multiple code words in TTI. How to transmit a UCI in a PUSCH with multiple code words is a new problem, for which there is no prior art currently related.
    SUMMARY OF THE INVENTION
    In order to solve the problem of UCI transmission in a PUSCH with multiple code words, the modalities of the present invention provide a method and an apparatus for the transmission of UCI. The technical solutions are as follows:
    A method for transmitting UCI, which includes:
    determining a code word corresponding to the UCI among multiple code words according to a pre-established rule, when the UCI is transmitted in a PUSCH with multiple code words; and the transmission of the UCI by mapping the UCI to the corresponding code word.
    According to an implementation of the method above, the determination of the code word corresponding to the UCI among the multiple code words according to the pre-established rule includes:
    for an UCI to be transmitted, the division of an UCI to be transmitted in multiple parts, where the number of the multiple parts is equal to the number of the multiple code words, and each part of an UCI corresponds to one of the multiple code words; and the transmission of the UCI by mapping the UCI to the corresponding code word includes:
    the transmission of each part of an UCI to be transmitted by mapping each part of an UCI to be transmitted in a corresponding one respectively.
    According to another implementation of the method above, the determination of the code word corresponding to the UCI among the multiple
    4/24 code words according to the pre-established rule include:
    for a UCI to be transmitted, performing a channel encoding for a UCI to be transmitted, and splitting a channel UCI encoded into multiple parts, where the number of the multiple parts is equal to the number of the multiple code words and each part of an encoded channel UCI corresponds to one of the multiple code words; and the transmission of the UCI by mapping the UCI into the corresponding code word includes:
    the transmission of each part of an UCI to be transmitted by mapping each part of an UCI to be transmitted in a corresponding code word, respectively.
    According to yet another implementation of the method above, the determination of the code word corresponding to the UCI among the multiple code words according to the pre-established rule includes:
    for a plurality of UCIs of the same type in the UCI to be transmitted, the division of M UCIs into N groups, if the number of the plurality of UCIs of the same type M is divisible by the number of N channel providers, where each group corresponds to one of the N code words and each group corresponds to M / N UCIs;
    if M is less than N and M / N is not an integer, selecting M code words from N code words in a designated sequence, and mapping M UCIs to M code words, where each UCI corresponds to one code word; and if M is greater than N and M / N is not an integer comprising a quotient X and a remainder Y, the division of M UCIs into N groups, where each group corresponds to one of the N code words, and each group comprises X UCIs; and selecting Y code words from N code words in the designated sequence, and mapping the remaining Y UCIs after dividing the group into Y code words, where each UCI corresponds to a code word, where M and N are natural numbers and N is not less than 2.
    A device for the transmission of UCI, which includes:
    5/24 a determination unit, configured for the determination of a code word corresponding to the UCI among multiple code words, according to a pre-established rule, when the UCI is transmitted in a PUSCH with multiple code words; and a transmission unit, configured for the transmission of the UCI by mapping the UCI in the corresponding code word.
    According to an implementation of the apparatus above, the unit of determination includes:
    a second unit of determination, configured to divide, for a UCI to be transmitted, a UCI into multiple parts when the UCI is transmitted in a PUSCH with multiple code words, where the number of parts is equal to the number of code words and each part corresponds to one of the code words; and the transmission unit includes:
    a transmission unit configured for the transmission of each part of an UCI to be transmitted by mapping each part of an UCI to be transmitted in a corresponding code word, respectively.
    According to another implementation of the apparatus above, the unit of determination includes:
    a third unit of determination, configured to perform, for a UCI to be transmitted, a channel coding for a UCl, when the UCI is transmitted in a PUSCH with multiple code words, and to divide the encoded channel UCI into multiple parts, in that the number of parts is equal to the number of code words, and each part corresponds to one of the code words; and the transmission unit includes:
    a transmission unit, configured for the transmission of each part of an UCI to be transmitted by mapping each part of an UCI to be transmitted in a corresponding code word, respectively.
    According to another implementation of the device above, the
    6/24 unit of determination includes:
    a fourth unit of determination, configured to: divide, for a plurality of UCIs of the same type in the UCI to be transmitted, when the UCI is transmitted in a PUSCH with multiple code words, M UCIs in N groups, if the number of the plurality of UCIs of the same type M is divisible by the number of N code words, where each group corresponds to one of the N code words, and each group includes M / N UCIs; if M <N and M / N is not an integer, select M code words from the N code words in a designated sequence and map the M UCIs into the M code words, where each UCI corresponds to a code word; if M is greater than N and the result of dividing M by N is not an integer including a quotient X and a remainder Y, divide the M UCIs into N groups, where each group corresponds to one of the N code words, and each group includes X UCIs; and select Y code words from the N code words in the designated sequence, and map the Y UCIs remaining after dividing the group into the Y code words, but that each UCI corresponds to a code word, M and N are natural numbers, and N does not is less than 2.
    Optionally, the designated sequence mentioned above is a sequence from a high level of modulation and coding scheme (MCS) to a low MCS level corresponding to the code words, or a sequence from a low MCS level to a high MCS level corresponding to the code words.
    Technical solutions according to the modalities of the present invention solve the problem of how to transmit a UCI in a PUSCH with multiple code words. The solutions can be easily implemented based on LTE R8, without involving too much additional standardization work.
    BRIEF DESCRIPTION OF THE DRAWINGS
    Figure 1 is a flow chart of a method for transmitting UCIs according to an embodiment of the present invention;
    figure 2 is a flow chart of a method for transmitting UCI according to embodiment 1 of the present invention;
    7/24 figure 3 is a flow chart of how an eNode B processes a received UCI after the UCI is divided into multiple parts, and each part is mapped to a corresponding code word for transmission according to mode 1 of the present invention;
    figure 4 is a flow chart of how a terminal performs operations related to a channel encoding for data and UCI according to embodiment 1 of the present invention;
    figure 5 is a schematic diagram of data and UCI locations in a TTI, after a channel interlacing, according to embodiment 1 of the present invention;
    figure 6 is a flow chart of a method for transmitting UCI according to embodiment 2 of the present invention;
    figures 7A and 7B are a schematic flowchart of transmission of an ICU in two code words according to embodiment 2 of the present invention;
    figure 8 is a flow chart of a method for transmitting UCI according to embodiment 3 of the present invention;
    figure 9 is a flow chart of a method for transmitting UCI according to embodiment 4 of the present invention;
    figure 10 is a structural diagram of an apparatus for transmitting UCIs according to embodiment 5 of the present invention; and figure 11 is another structural diagram of an apparatus for transmitting UCIs according to embodiment 5 of the present invention. DETAILED DESCRIPTION OF THE MODALITIES
    To clarify the objectives, technical solutions and merits of the present invention, the following describes the modalities of the present invention in greater detail, with reference to the associated drawings.
    As shown in figure 1, a method for transmitting UCI in one embodiment of the present invention includes the following steps:
    101. Determine a code word corresponding to the UCI among multiple code words according to a pre-established rule
    8/24 when the UCI is transmitted in a PUSCH with multiple code words.
    102. Transmit the UCI by mapping the UCI into the corresponding code word.
    The preceding method is a solution for the transmission of UCI in multiple code words, supports LTE R8, LTE R9 and newer versions of LTE, and is a new technology in this field. When the method is applied to LTE R8, due to the fact that there is only one code word, the code word is directly determined as the code word corresponding to the UCI, and the UCI is transmitted by mapping the UCI into this code word.
    In this modality, the UCI can be any type of UCI, including, but not limited to: CQI, RI, HARQ-ACK or channel information and so on. The type of UCI is not limited here. There may be one or more UCIs to be transmitted in this mode. A UCI refers to control information corresponding to a coded block of control information. When there are multiple UCIs to be transmitted, any two of the UCIs can be of the same or different types. For example, when there are three UCIs to be transmitted, all three UCIs can be CQIs; or one being a CQI, one being an IR and the rest being HARQ-ACK.
    In this modality, a variety of pre-established rules, which include, but are not limited to: transmission of an UCI by mapping an UCI in a code word; transmitting a UCI by dividing an UCI into multiple parts and mapping the multiple parts to multiple code words, respectively, and transmitting multiple UCIs by mapping the multiple UCIs into a code word. The pre-established rules are not limited here. The method is set out below with reference to four modalities. The rules established in any of the four modalities below are applicable.
    Mode 1
    As shown in figure 2, this modality provides a method for transmitting an UCI, in which an UCI is divided into multiple
    9/24 parts and then the multiple parts are transmitted together with multiple code words, respectively. The method includes the following steps:
    201. When the UCI is transmitted in a PUSCH with multiple code words, for a UCI to be transmitted, divide the UCI into multiple parts, where the number of the multiple parts is equal to the number of the code words, and each part corresponds to a code words.
    For example, if there are two code words, for example, code word 1 and code word 2, an UCI is divided into two parts, for example, UCI1 and UCI2. UCI1 corresponds to code word 1 and UCI2 corresponds to code word 2.
    The UCI can be divided into multiple parts in many methods. The methods of division are not limited here. Any two of the multiple parts can be of the same or different lengths.
    202. Transmit each part of an UCI by mapping each part of the UCI to the corresponding code word, respectively.
    In this modality, each part of the UCI is processed in the same way. As shown in figure 3, the step 202 process can be implemented in the following detailed steps:
    301. Use each part of an UCI as a current part, and calculate the number (Q) of modulation symbols for the current part of the UCI.
    Specifically, if the current part of the UCI is HARQ-ACK or RI, apply formula (1) for the calculation; if the current part of the UCI is CQI, apply formula (2) for the calculation.
    ΖΓ β '= πώι (1)
    Ttr PUSCH — initial vPUSCH-initial o PUSCH U ' 1VL sc' symb 'Poffset ci
    Σλ r = 0
    4-M
    PUSCH sc
    r 2 '= min(O + LyM ™ SCH ~ initial Cl . mPUSCH-initial. The PUSCH symb Poffset Σ K rr = 07
    (2)
    In the formulas above, ° is the number of bits of original information
    PUSCH-final of UCI in the current part; sc is the transmission bandwidth for an initial PUSCH transmission for the same transport block; yu - PUSCH -initial symh £ 0 n um mer Q d e sC-FDMAs for an initial transmission of
    THE PUSCH
    PUSCH for the same transport block; Poffset is the deviation from the modulation and coding scheme (MCS) of UCI in the current part by the data;
    M PUSCH is the transmission bandwidth of the PUSCH; r is the sum of the number of code block information bits r and the number of cyclic redundancy check (CRC) bits; c is the number of blocks of codePUSCHl go; symb is the number of SC-FDMAs for the same transport block; is the number of modulation symbols for IR; L is the number of CRC bits, and L is 0 when the CQI is encoded by a ReedMuller (RM) encoding and is 8 when the CQI is encoded by a convolution encoding; is the modulation order; when the ICU is HARQ-ACK, oPUSCH__ oHARQ-ACK oPUSCH _ O RI
    Poffset -Poffset. q uanc | 0 q UCI is RI, Poffsel when UCI is CQI,
    OPUSCH _ oCQI
    Poffset Poffset
    302. Calculate the number of bits of the UCI in the current part after a channel encoding.
    Specifically, apply formula (3) to calculate:
    Q = QmQ '(3)
    In the formula above, it is the number of UCI bits in the current part after a channel encoding; is the modulation order; and Q is the number of modulation symbols for UCI in the current part.
    303. Perform operations related to a channel encoding for the transport block (specifically, data to be transmitted), CQI, RI and HARQ-ACK, multiplexing the RI encoded data and the HARQ-ACK encoded bits.
    304. Send the interlaced channel bits to eNode B, after performing a series of operations, such as shuffling, modulation, DFT, and resource mapping for the interlaced channel bits.
    The series of operations refers to the operations intended for wireless transmission between the terminal and eNode B, and are the same as the operations performed when the terminal sends only service data
    11/24 exclusive to the UCI. Therefore, operations are not detailed here further.
    Each part of the UCI is sent as soon as this part has gone through the previous operations. Therefore, for N code words, after a UCI is divided into N parts and the N parts are mapped to the N code words respectively, the mapped signals are obtained, and the terminal sends the signals to eNode B, where N is a number natural and N> 2.
    In this mode, after the terminal finishes transmitting from the UCI, the method can still include the following steps:
    305. After receiving the signals from the terminal, eNode B performs a series of operations for the signals, to separate the UCI transmission together with the data by performing a channel deinterlacing and demultiplexing, and performs a channel decoding , to judge whether the UCI transmission is correct. If the UCI transmission is correct, eNode B will obtain the original UCI information bits in the current part transmitted by the terminal.
    306. After obtaining the parts of the UCI transmitted together with each code word (specifically, N parts of the UCI), eNode B combines the original information bits of the N parts into a complete UCI transmitted by the terminal, in order to complete the transmission of the UCI.
    As shown in figure 4, step 303 above can include the following detailed steps:
    401. Attach CRC bits to transport block.
    402. Divide the transport block into code blocks, and append CRC bits to the code block.
    403. Perform a channel encoding for each code block.
    404. Perform a rate combination for blocks of code that have passed through a channel encoding.
    405. Concatenate all code blocks that have gone through a rate combination.
    Additionally, a channel encoding is performed for the
    12/24
    UCI. The channel encoding for the UCI can include a channel encoding for the CQI, a channel encoding for the RI, or a channel encoding for the HARQ-ACK. The sequence of steps 401 to 405 above is not limited by this step. If the UCI is CQI, steps 401 to 405 may have any sequence of occurrences, as long as they occur before the step
    406. If the UCI is RI or HARQ-ACK, steps 401 to 405 may have any sequence of occurrences, as long as they occur before step 407.
    406. Data multiplexing after code block concatenation and coded channel CQI.
    407. Perform channel interleaving for multiplexed bits, the encoded channel IR and the encoded channel HARQ-ACK.
    As a result of channel interlacing, the time-frequency locations of the data and the control information in a TTI are approximately illustrated in Figure 5, after the PUSCH resource mapping. In Figure 5, each small block represents a time-frequency resource element, the transversal axis represents the time domain and the vertical axis represents the frequency domain.
    The preceding method is a solution for the transmission of an UCI in a PUSCH with multiple code words. A UCI is divided into multiple parts, and each part is transmitted together with a different code word after being coded, and the terminal's transmission power is used. For example, the total transmit power of the terminal is up to 23 dBm, and the transmit power of each of the two terminal antennas is up to 20 dBm. Therefore, using the method in this modality, the UCI is divided into two parts, and the two parts are transmitted together with the two code words. In this way, it is ensured that each antenna has an UCI to be transmitted, and in this case, the transmission power to the UCI is up to 23 dBm. If the UCI is not divided into two parts, but UCI is transmitted together with one of the code words, the UCI will be transmitted on only one antenna at the same time. In this case, the transmission power to the UCI is up to 20 dBm only. Therefore, the method in this modality makes full use of the transmission power of the ter
    13/24 mine. In addition, the method in this modality maintains a backward compatibility, because it reuses the relevant standards of the LTE R8 and the transmission procedure and the reception procedure in the implementation as much as possible. The method in this modality can be easily implemented based on LTE R8, without involving an additional work of standardization.
    Mode 2
    In modality 1 above, an UCI is divided into multiple parts for coding, which increases the implementation complexity compared to LTE R8. Furthermore, the performance of the UCI is constrained by the performance of the UCI parties, and the probability of receiving the UCI correctly is lower than the probability of receiving any part of the UCI correctly. Therefore, as shown in figure 6, this modality provides another method for transmitting the UCI. Unlike mode 1, mode 2 provides a method for dividing an encoded channel UCI into multiple parts and then transmits the multiple parts together with multiple code words, respectively. The method includes the following steps:
    601. When a UCI is transmitted in a PUSCH with multiple code words, for a UCI to be transmitted, perform a channel encoding for a UCI to be transmitted.
    Specifically, the channel encoding process for an UCI is as follows:
    (1) Calculate the number (Q) of modulation symbols for the UCI in each code word. Specifically, if the UCI is HARQ-ACK or RI, apply formula (4) for the calculation; or, if the UCI is CQI, apply formula (5) for calculation. Formulas (4) and (5) are revised formulas of the corresponding formulas in LTE R8.
    In this modality, the number of modulation symbols for the UCI in each code word is the same, specifically, it is Q.
    14/24 / Τ π 1Γ PUSCH-initial PUSCH -initial oPUSCH symb___________ 'Poffset
    Ç, ~ l
    ΣΣ *, i = 0 r = 0
    2 = πίη
    ΣΣ ^ i = 0 r = 0
    ã.M PUSCH ' 1V1 SC (4) (5)
    In the formulas above, ° is the number of bits of UCI origiPUSCH-initial information in the current part; sc is the transmission bandwidth for an initial PUSCH transmission for the same transport block;
    yy PUSCH -initial syn * θ the number of SC-FDMAs for an initial oPUSCH transmission
    PUSCH for the same transport block; Poffset is the deviation from the modulation and coding scheme (MCS) of UCI in the current part by the data; M sc is the PUSCH transmission bandwidth; r is the sum of the number of code block information bits r of the codeword 'and the number of CRC bits; <is the number of code blocks of code word i-, cw θ the number of code words; symb is the number of SCFDMAs for the same transport block; is the number of modulation symbols for IR in each code word; L is the number of CRC bits, and L is 0 when the CQI is encoded by an RM encoding and L is 8 when the CQI is encoded by a convolution encoding; is the oPUSCH _ oHARQ-ACK modulation order; when the UCI is HARQ-ACK, Poffset ~ p ° ff set ; When
    OPUSCH _ oRI oPUSCH _ oCQI the UCI is RI, Poffset ~ Poffset ; when the UCI is CQI, Poffset ~ Poffset .
    In this modality, the UCI undergoes a channel encoding first and then is divided into multiple parts. Channel encoding is performed only once. As shown in formulas (4) and (5), after PUSCH OPUSCH only one Poffset value, instead of multiple precise Poffset values
    OPUSCH be applied to the calculation. The Poffset value is sent by eNode B to the terminal. Therefore, this mode saves signal processing time.
    (2) Calculate ο number (β) of UCI bits after a channel encoding.
    15/24
    Specifically, apply formula (6) to calculate:
    <2 = Σ <2 .. · 0 (6) i = 0
    In the above formula, it is the number of bits of the UCI after a channel encoding; ® mi is the z code word modulation order; and Q 'is the number of modulation symbols for the UCI in each code word.
    (3) Carry out a channel encoding for the UCI based on the number (Q) of UCI bits after a channel encoding.
    602. Divide the coded channel UCI into multiple parts, where the number of the multiple parts is equal to the number of the multiple code words and each part corresponds to one of the multiple code words.
    For example, there are N code words (N is a natural number and N> 2). The coded channel UCI is divided into N parts: UCI1, UCI2, ..., UCIN, which correspond to the first code word 1, the code word 2, ..., the code word N, respectively.
    The coded channel UCI can be divided into multiple parts in many methods. The methods of division are not limited here. One method is: the number of bits for each part in the corresponding codeword is calculated with Q * '®, which represents the number of bits for part i in the codeword i.
    603. Transmit each part divided by mapping each part divided into the corresponding code word respectively.
    The detailed process is as follows:
    (1) Carry out a channel coding for the transport blocks in each code word, respectively. For each code word, multiplex the coded data and the part corresponding to the code word among the parts of the CQI divided after a channel coding; and performing channel interleaving for the multiplexed bits, the part corresponding to the code word among the parts of the RI divided after a channel coding, and the part corresponding to the code word among the parts of the HARQ-ACK divided after a channel coding.
    (2) Send the interlaced channel bits to eNode B, after
    16/24 performing a series of operations, such as scrambling, modulation, DFT, and resource mapping for the interlaced channel bits. This step is the same as step 304, and is not further repeated here.
    (3) After receiving the signals from the terminal, eNode B performs a series of operations for the signals to separate information from the UCI transmitting together with each code word by performing a channel deinterlacing and demultiplexing for each code word, N pieces of UCI information corresponding to N code words.
    (4) Combine the N parts obtained from the UCI, and perform a channel decoding for the UCI. If the decoding is corrected, obtain the original UCI information bits transmitted by the terminal, in order to complete the UCI transmission.
    As shown in figure 7, taking two code words, for example, the detailed process for implementing the preceding method is described. The transport blocks in two code words are channel-coded separately. The UCI that goes through a channel encoding includes CQI, RI and HARQ-ACK. After channel coding, the UCI is divided into two parts. One part is mapped to the first code word to be transmitted, and the other part is mapped to the second code word to be transmitted. ENode B performs a channel deinterlacing and demultiplexing, upon receipt of the two parts, and combines the two parts and performs a channel decoding to obtain the original UCI information bits transmitted by the terminal.
    The preceding method is a solution for the transmission of UCI in a PUSCH with multiple code words. As in mode 1, due to the fact that a UCI is divided into multiple parts after a channel encoding, and each part is transmitted together with a different code word, full use is made of the terminal's transmission power, and the reason is the same as that in modality 1. If compared to modality 1, modality 2 reduces the implementation complexity, improves the performance of the UCI, and can be easily implemented based on
    17/24
    LTE R8, without involving excessive standardization work. In this modality, the control UCI first passes through a channel coding and then is divided into multiple parts. Channel encoding is performed only once. As shown in formulas (4) and (5), the PUSCH or PUSCH only has a Poffset value, rather than multiple Poffset values, the PUSCH must be applied to the calculation. The Poffset value is sent by eNode B to the terminal. Therefore, the method according to this modality saves signal processing time.
    Mode 3
    In mode 2, when the UCI is transmitted on the PUSCH, the sending procedure and the receiving procedure used in LTE R8 need to be modified, which prevents the reuse of the LTE R8 algorithm. Furthermore, the formula for calculating the number of modulation symbols for the UCI and the formula for calculating the number of UCI bits after a channel encoding in LTE R8 need to be modified, specifically, the formula (4) and the formula (5) need to be modified. Generally, RI and HARQ-ACK have fewer bits of original information, for example, 1 to 2 bits. In this case, additional repeated coding may be required to become transferable to IR or HARQ-ACK together with multiple code words, which leads to an unnecessary waste of resources. To solve these problems, this modality provides another method for UCI transmission. Unlike mode 1 and mode 2, mode 3 employs a UCI transmission method by mapping an UCI to a code word. As shown in figure 8, the method in this modality includes the following steps:
    801. When a UCI is transmitted in a PUSCH with multiple code words, for a UCI to be transmitted, determine a code word designated among the multiple code words as a code word corresponding to a UCI to be transmitted.
    The designated code word can be a code word designated by the terminal, or a code word indicated by an uplink grant (UL), or a code word notified by a signal
    18/24 tion from an eNode B, for example, notified by a radio resource control (RRC) signal. Specifically, the UL Grant may indicate the code word either explicitly or implicitly through a field in the UL Grant, for example, indicate the code word explicitly by adding a field in the UL Grant, or indicate the code word through an MCS field implicitly. The terminal can determine the corresponding code word according to the value of the MCS field. The UL Concession is obtained by the terminal by receiving a downlink control signal from eNode B.
    802. Transmit the UCI by mapping an UCI to the corresponding code word.
    Specifically, this process can include the following steps:
    (1) Based on the MCS of the given code word, calculate the number of modulation symbols for the UCI. If the UCI is HARQ-ACK or RI, apply formula (1) for the calculation; or, if the UCI is CQI, apply formula (2) for the calculation.
    (2) Calculate the number of bits of the UCI after a channel encoding. The calculation can be performed using formula (3), based on the number of modulation symbols for the UCI calculated in the previous step.
    (3) Perform operations related to a channel coding for the UCI and the data, respectively, and perform a multiplexing and channel interlacing. Then, perform a series of operations, such as shuffling, modulation, DFT and resource mapping, and then send to eNode B. This step is the same as steps 303 to 304, and is not repeated here additionally.
    (5) After receiving signals from the terminal, eNode B performs deinterlacing and demultiplexing to separate the transmitted UCI together with the code word, and perform a channel decoding to judge whether the UCI transmission is correct. If the UCI transmission is correct, obtain the UCI information transmitted by the terminal. This step is the same as step 305, and is not repeated here additionally.
    19/24
    The preceding method is a solution for the transmission of an UCI in a PUSCH with multiple code words. In this modality, an UCI is transmitted by mapping to a code word. If compared with modality 2, the method employed in modality 3 does not involve a modification of the LTE R8 algorithm and the transmission and reception procedure as much as possible. The method in this modality can be easily implemented, based on LTE R8, without involving excessive additional standardization work. For the UCI with few original bits of information, additional repetitive coding is avoided, and resources are saved.
    Mode 4
    In this mode, the UCI to be transmitted from the terminal can be the intended UCI for a downlink carrier or an intended UCI for multiple downlink carriers. The UCI of multiple downlink carriers can be coded independently or jointly. A joint encoding includes a joint encoding for UCI of all downlink bearers, or a joint encoding for UCI of some of all downlink bearers. In the case of an independent coding, the UCI of each downlink carrier goes through a channel coding respectively. In the case of a joint encoding, the UCI of multiple downlink bearers goes through a channel encoding together once.
    Based on modality 3, for the scenario of transmission of multiple UCIs from the terminal, in addition to the adoption of the method according to modality 3, this modality provides another method for the transmission of UCI. As shown in figure 9, the method in this modality includes the following steps:
    901. When multiple UCIs are transmitted in a PUSCH with multiple code words, for a plurality of UCIs of the same type in the multiple UCIs to be transmitted, determine a code word corresponding to each UCI among multiple code words according to
    20/24 a pre-established rule. The pre-established rule is as follows:
    If the number of multiple UCIs of the same type M is divisible by the number of N code words, the M UCIs will fall into N groups, each group corresponding to a code word in the N code words, and each group including M / N UCIs. For example, if M = 4 and N = 2, M / N = 2, and therefore the 4 UCIs fall into two groups, each group including 2 UCIs, the first group corresponding to the first code word and the second group corresponding to the second code word.
    If M <N and M / N is not an integer, M code words will be selected from the N code words in a designated sequence. M UCIs correspond to M code words, and each UCI corresponds to a code word. For example, if M = 2 and N = 3, 2 code words will be selected from 3 code words in a designated sequence, 2 UCIs will be mapped to the 2 code words, and the remaining code word will not have UCI information, but will transmit data only.
    If M is greater than M and the result of dividing M by N is not an integer including a quotient X and a remainder Y, the M UCIs will fall into N groups, each group corresponding to one of the N code words, and each group including X UCIs. After that, Y code words are selected from the N code words in a designated sequence, and the Y code words remaining after the division of the group are mapped to the Y code words. Each UCI corresponds to a code word. For example, if M = 7 and N = 3, the result of dividing M by N will include a quotient 2 and a remainder 1, the UCIs will fall into 3 groups, each group will include 2 UCIs, and the 3 groups will correspond to 3 words code respectively. In this case, one UCI will remain, 1 code word will be selected from the 3 code words in a designated sequence, and the remaining UCI will be mapped to the selected code word. If the number of UCIs remaining is plural, such as Z, Z code words will be selected in a designated sequence, and the remaining Z UCIs will be mapped to the Z code words.
    Μ, X, X, Y and Z are all natural numbers, and N is not less than 2.
    21/24
    The designated sequence involved in the preceding steps can be: a sequence from a high MCS level to a low MCS level corresponding to the code words or a sequence from the low MCS level to a high MCS level corresponding to the code words902 . Transmit the UCIs by mapping the UCIs to the corresponding code words, respectively.
    In the preceding rules in this modality, the terminal can transmit one of the UCIs by further mapping one of the UCIs to the designated code word. The designated code word can be a code word designated by the terminal, or a code word indicated explicitly or implicitly by a field in the UL Concession, or a code word notified by a signal from eNode B. That is, the terminal can ensure that one of the UCIs is mapped to the designated code word based on compliance with the preceding rules.
    In the method provided in this modality, multiple UCIs are transmitted by mapping multiple UCIs uniformly to the corresponding code words in the designated sequence, without being divided into parts, and one or more UCIs are mapped into a code word, which provides a solution to transmission of multiple UCIs in a PUSCH with multiple code words. Furthermore, the solution maintains a backward compatibility, because it reuses the relevant standards of the LTE R8 and the transmission procedure and the reception procedure in the implementation, as much as possible. The method in this modality can be easily implemented based on LTE R8, without involving excessive additional standardization work. Multiple UCIs are mapped into multiple code words, in order to avoid the following case: multiple UCIs are mapped into a code word, resulting in the fact that a large number of resources for UCIs, resources available for data are scarce, and the amount of data to be carried is very small. Furthermore, if multiple UCIs are mapped to a code word, when the current data transmission fails, this minimum amount of data will need to be re
    22/24 transmitted in the same resource. If no new UCI needs to be transmitted at the time of a retransmission, the data will have to be retransmitted at a very low code rate, which will lead to a waste of resources. Therefore, the method provided in this modality also effectively reduces the unnecessary waste of resources caused by a retransmission of data.
    Mode 5
    As shown in figure 10, a device for transmitting UCI in this mode includes:
    a determination unit 1001 configured for determining a code word corresponding to the UCI among multiple code words according to a pre-established rule, when the UCI is transmitted in a PUSCH with multiple code words; and a transmission unit 1002, configured for the transmission of the UCI by mapping the UCI in the corresponding code word.
    As shown in figure 11, in this embodiment, the determination unit 1001 can still include:
    a first determination unit 1001, configured to determine, for a UCI to be transmitted, a code word designated among multiple code words as a code word corresponding to a UCI when the UCI is transmitted in a PUSCH with multiple code words, where the designated code word is a code word designated by a terminal, or a code word indicated by an UL Concession, or a code word notified by a signal from an eNode B. The code word can be indicated either explicitly or implicitly by a field in the UL Concession.
    Alternatively, unit of determination 1001 further includes:
    a second determination unit 1001b, configured to divide, for a UCI to be transmitted, a UCI into multiple parts when the UCI is transmitted in a PUSCH with multiple code words, where the number of parts is equal to the number of code words and each part corresponds to one of the code words.
    23/24
    Alternatively, the determination unit 1001 further includes: a third determination unit 1001c, configured to perform, for a UCI to be transmitted, a channel encoding for a UCI, when the UCI is transmitted in a PUSCH with multiple code words, and divide the coded channel UCI into multiple parts, where the number of parts is equal to the number of code words, and each part corresponds to one of the code words.
    Alternatively, unit of determination 1001 further includes:
    a fourth unit of determination 1001 d, configured to: divide, for a plurality of UCIs of the same type in the UCI to be transmitted, when the UCI is transmitted in a PUSCH with multiple code words, M UCIs in N groups, if the number of plurality of UCIs of the same type M is divisible by the number of N code words, where each group corresponds to one of the N code words, and each group includes M / N UCIs; if M <N and M / N is not an integer, select M code words from the N code words in a designated sequence and map the M UCIs into the M code words, where each UCI corresponds to a code word; if M is greater than N and the result of dividing M by N is not an integer including a quotient X and a remainder Y, divide the M UCIs into N groups, where each group corresponds to one of the N code words, and each group includes X UCIs; and select Y code words from the N code words in the designated sequence, and map the Y UCIs remaining after dividing the group into Y code words, where each UCI corresponds to a code word, M and N are natural numbers, and N is not less than 2.
    For the second determination unit 1001b or the third determination unit 1001c, the transmission unit 1002 further includes:
    a transmission unit 1002a configured to transmit each part of the UCI by mapping each part of the UCI to the corresponding code word, respectively.
    In this modality, the designated sequence is: a sequence from a high MCS level to a corresponding low MCS level
    24/24 to the code words, or a sequence from a low MCS level to a high MCS level corresponding to the code words.
    Any device provided in this embodiment of the present invention can be integrated into a terminal which communicates with an eNode B over the air.
    The method in this modality is a solution for the transmission of one or more UCIs in a PUSCH with multiple code words, and maintains a backward compatibility, because it can reuse the relevant standards of the LTE R8 and the transmission procedure and the reception procedure in the implementation, as much as possible. The method in this modality can be easily implemented based on LTE R8, without involving excessive additional standardization work. Due to the fact that multiple UCIs are mapped into multiple code words, more resources are available for data, and the resource waste caused by data retransmission is effectively reduced.
    Persons skilled in the art should understand that all or part of the technical solutions provided in the modalities of the present invention can be implemented by a program instructing relevant hardware. The program can be stored on a storage medium that can be read on a computer, and the storage medium can be any medium capable of storing program codes, such as a read-only memory (ROM), a random access memory ( RAM), a magnetic disk or an optical disk.
    The above descriptions are merely exemplary embodiments of the present invention, but are not intended to limit the scope of the invention. Any modifications, variations or amount of time that can be easily derived by those skilled in the art, without deviating from the spirit and scope of the invention must fall within the scope of protection of the present invention.
    权利要求:
    Claims (10)
    [1]
    1. Method for transmitting uplink control (UCI) information, characterized by the fact that it comprises:
    determining (101) a code word corresponding to the UCI among multiple code words according to a pre-established rule, when the UCI is transmitted on a shared physical uplink (PUSCH) channel with the multiple code words; and transmitting (102) the UCI by mapping the UCI to the corresponding code word;
    in which the determination of a code word corresponding to the UCI among the multiple code words according to a pre-established rule comprises:
    for a UCI to be transmitted, determine (801) a code word designated among the multiple code words as the code word corresponding to a UCI to be transmitted, where the designated code word is a code word indicated by an uplink Concession ( UL).
    [2]
    2. Method, according to claim 1, characterized by the fact that the determination of the code word corresponding to the UCI among the multiple code words according to the pre-established rule comprises:
    for an UCI to be transmitted, divide (201) to an UCI to be transmitted in multiple parts, where the number of the multiple parts is equal to the number of the multiple code words and each part of the UCI corresponds to one of the multiple code words; and the transmission of the UCI by mapping the UCI to the corresponding code word comprises:
    transmitting (202) each part of an UCI to be transmitted by mapping each part of an UCI to be transmitted to a correspondent respectively.
    [3]
    3. Method according to claim 1, characterized by the
    Petition 870180013947, of 02/21/2018, p. 5/106
    2/5 the fact that the determination of the code word corresponding to the UCI among the multiple code words according to the pre-established rule comprises:
    for a UCI to be transmitted, perform (601) channel coding for a UCI to be transmitted, and divide (602) the UCI encoded in a channel into multiple parts, where the number of the multiple parts is equal to the number of the multiple words code and each part of a channel-coded UCI corresponds to one of the multiple code words; and the transmission of the UCI by mapping the UCI to the corresponding code word comprises:
    transmitting each part of an UCI to be transmitted by mapping each part of an UCI to be transmitted to a corresponding code word respectively.
    [4]
    4. Method, according to claim 1, characterized by the fact that the determination of the code word corresponding to the UCI among the multiple code words according to the pre-established rule comprises:
    for a plurality of UCIs of the same type in the UCI to be transmitted, divide M UCIs into N groups if the number of the plurality of UCIs of the same type M is divisible by the number of the N code words, where each group corresponds to one of the N words code and each group comprises M / N UCIs;
    if M is less than N and M / N is a non-integer, select M code words from the N code words in a designated sequence, and map the M UCIs to the M code words, where each UCI corresponds to a code word; and if M is greater than N and M / N is a non-integer number comprising a quotient X and a remainder Y, divide the M UCIs into N groups, where each group corresponds to one of the N code words, and each group comprises X UCIs; and select Y code words from the
    Petition 870180013947, of 02/21/2018, p. 6/106
    3/5
    N code words in the designated sequence, and map the rest Y UCIs after dividing group into the Y code words, where each UCI corresponds to a code word, where
    M and N are natural numbers and N is not less than 2.
    [5]
    5. Method, according to claim 4, characterized by the fact that the designated sequence is:
    a high level sequence of Coding and Modulation Scheme (MSC) up to a low level of MSC corresponding to the code words or a sequence from a low level of MSC to a high level of MSC corresponding to the code words.
    [6]
    6. Apparatus for transmitting uplink control (UCI) information, characterized by the fact that it comprises:
    a determination unit (1001), configured to determine a code word corresponding to the UCI among multiple code words according to a pre-established rule, when the UCI is transmitted on a shared physical uplink channel (PUSCH) with the multiple code words; and a transmission unit (1002), configured to transmit the UCI by mapping the UCI to the corresponding code word; wherein the unit of determination (1001) comprises:
    a first determination unit (1001a), configured to determine (801), for a UCI to be transmitted, a code word designated among multiple code words as a code word corresponding to a UCI to be transmitted when the UCI is transmitted in the PUSCH with multiple code words, where the designated code word is a code word indicated by an Upward Link Concession (UL).
    [7]
    7. Apparatus according to claim 6, characterized by the fact that the determination unit (1001) comprises:
    a second unit of determination (1001b), configured to divide, for a UCI to be transmitted, to divide a UCI to be transmitted
    Petition 870180013947, of 02/21/2018, p. 7/106
    4/5 transmitted in multiple parts, when the UCI is transmitted in the PUSCH with the multiple code words, where the number of the multiple parts is equal to the number of the multiple code words and each part of an UCI corresponds to one of the multiple code words; and the transmission unit (1002) comprises:
    a transmission unit (1002a), configured to transmit each part of an UCI to be transmitted by mapping each part of an UCI to be transmitted to a corresponding code word respectively.
    [8]
    8. Apparatus according to claim 6, characterized by the fact that the determination unit (1001) comprises:
    a third determination unit (1001c), configured to carry out, for a UCI to be transmitted, channel coding for a UCI to be transmitted when the UCI is transmitted in the PUSCH with the multiple code words, and to divide to a coded UCI in a multi-part channel, where the number of the multiple parts is equal to the number of the multiple code words and each part of a channel-coded UCI corresponds to one of the multiple code words; and the transmission unit (1002) comprises:
    a transmission unit (1002a), configured to transmit each part of an UCI to be transmitted by mapping each part of an UCI to be transmitted to a corresponding code word respectively.
    [9]
    9. Apparatus according to claim 6, characterized by the fact that the determination unit (1001) comprises:
    a fourth unit of determination (1001 d), configured to: divide, for a plurality of UCIs of the same type in the UCI to be transmitted when the UCI is transmitted in the PUSCH with multiple code words, M UCIs in N groups if the plurality number of UCIs of the same type M is divisible by the number of N code words, where each group corresponds to one of the N code words and each group comprises M / N UCIs; if M is less than N and M / N is a non-integer,
    Petition 870180013947, of 02/21/2018, p. 8/106
    5/5 select M code words from the N code words in a designated sequence, and map the M UCIs to the M code words, where each UCI corresponds to a code word; if M is greater than N and M / N is a non-integer number comprising a quotient X and a remainder Y, 5 divide the M UCIs into N groups, where each group corresponds to one of the
    N code words, and each group comprises X UCIs; and select Y code words from the N code words in the designated sequence, and map the rest Y UCIs after dividing group into the Y code words, where each UCI corresponds to a code word, M and N are natural numbers 10 and N is not is less than 2.
    [10]
    10. Apparatus according to claim 9, characterized by the fact that the designated sequence is:
    a high level sequence of Coding and Modulation Scheme (MSC) up to a low level of MSC corresponding to the code words or a sequence from a low level of MSC to a high level of MSC corresponding to the code words.
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    公开号 | 公开日
    EP2512053A4|2012-10-17|
    US20180026744A1|2018-01-25|
    EP2512053A1|2012-10-17|
    AU2010330533B2|2014-01-23|
    JP2015008529A|2015-01-15|
    EP2985940B1|2017-03-22|
    AU2010330533A1|2012-07-05|
    EP3200373B1|2019-02-20|
    US10749627B2|2020-08-18|
    US20120243511A1|2012-09-27|
    KR20120096556A|2012-08-30|
    TR201905645T4|2019-05-21|
    JP5616458B2|2014-10-29|
    CN102013938A|2011-04-13|
    ES2561850T3|2016-03-01|
    JP6108239B2|2017-04-05|
    BR112012014101A2|2016-07-05|
    EP3487098B1|2020-07-29|
    EP3200373A1|2017-08-02|
    EP2985940A1|2016-02-17|
    EP3487098A1|2019-05-22|
    EP2512053B1|2015-12-02|
    KR101420624B1|2014-07-17|
    JP2013513323A|2013-04-18|
    WO2011069436A1|2011-06-16|
    US9806850B2|2017-10-31|
    AU2010330533C1|2014-07-10|
    CN102013938B|2012-07-04|
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    法律状态:
    2019-01-08| B09A| Decision: intention to grant|
    2019-03-19| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/12/2010, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    CN2009102543105A|CN102013938B|2009-12-07|2009-12-07|Method and device for transmitting uplink control information |
    CN200910254310.5|2009-12-07|
    PCT/CN2010/079508|WO2011069436A1|2009-12-07|2010-12-07|Method and apparatus for transmitting uplink control information|
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