CN108282435B - Signal transmission method and device - Google Patents

Signal transmission method and device Download PDF

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CN108282435B
CN108282435B CN201710065929.6A CN201710065929A CN108282435B CN 108282435 B CN108282435 B CN 108282435B CN 201710065929 A CN201710065929 A CN 201710065929A CN 108282435 B CN108282435 B CN 108282435B
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sequence
modulation
groups
positions
modulation symbols
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CN108282435A (en
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韩祥辉
夏树强
苟伟
张雯
石靖
任敏
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H04L27/262—Reduction thereof by selection of pilot symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H04L27/2621—Reduction thereof using phase offsets between subcarriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Abstract

The invention discloses a signal sending method, which comprises the following steps: acquiring a first sequence with the length of N; n is a positive integer; modulating a first modulation symbol on M positions of the first sequence; the first modulation symbol represents a modulated signal; m is a positive integer less than N; transmitting a first sequence with the first modulation symbol on a transmission symbol; or dividing M positions of the first sequence into G groups, and modulating the same modulation symbols in each group; the modulation symbols represent the modulated signals; g is an integer equal to or greater than 2, and G is equal to or less than N; transmitting the first sequence with the G groups of modulation symbols on transmission symbols. The invention also discloses a signal receiving method, a signal sending device and a signal receiving device.

Description

Signal transmission method and device
Technical Field
The present invention relates to wireless communication technologies, and in particular, to a signal transmission method and apparatus.
Background
Fifth generation mobile communication technology (5G) will support higher rate (Gbps in general), massive links (1M/km)2) Ultra-low latency (1ms), higher reliability, hundreds of times energy efficiency increase, etc. to support new demand changes. This means that a more flexible frame structure support is required. Is currently atThe 5G standard initially defines two types of transmission time units (slots), one being a downlink-oriented transmission time unit and the other being an uplink-oriented transmission time unit. In order to perform a Hybrid Automatic Repeat reQuest (HARQ) faster, a self-contained feedback is implemented if necessary, so that both transmission time units may include an uplink control symbol.
In a 5G system, how to simultaneously transmit pilot signals and data on the basis of ensuring a low peak-to-average ratio is a problem to be solved urgently at present.
Disclosure of Invention
In order to solve the existing technical problem, embodiments of the present invention provide a signal transmission method and apparatus.
The technical scheme of the embodiment of the invention is realized as follows:
the embodiment of the invention provides a signal sending method, which comprises the following steps:
acquiring a first sequence with the length of N; n is a positive integer;
modulating a first modulation symbol on M positions of the first sequence; the first modulation symbol represents a modulated signal; m is a positive integer less than N; transmitting a first sequence with the first modulation symbol on a transmission symbol; or dividing M positions of the first sequence into G groups, and modulating the same modulation symbols in each group; the modulation symbols represent the modulated signals; g is an integer equal to or greater than 2, and G is equal to or less than N; transmitting the first sequence with the G groups of modulation symbols on transmission symbols.
In the above scheme, the M positions are positions of even-numbered sequence points of the first sequence, or positions of odd-numbered sequence points of the first sequence.
In the above scheme, the M positions are a subset of positions of all even-numbered points of the first sequence.
In the above scheme, the M positions are a subset of all odd-numbered point positions of the first sequence.
In the above scheme, the first sequence is obtained by performing phase rotation on the second sequence in different frequency domains, and/or the first sequence is obtained by performing cyclic shift on the second sequence in different time sequences; wherein the content of the first and second substances,
the amplitude of the second sequence is a non-zero constant, and the length of the second sequence is N.
In the scheme, the second sequence is a Zadoff-Chu sequence or is obtained by converting the Zadoff-Chu sequence.
In the scheme, the second sequence is obtained by truncating a Zadoff-Chu sequence or circularly expanding the Zadoff-Chu sequence.
In the above scheme, the second sequence is a selected sequence obtained by Quadrature Phase Shift Keying (QPSK) phase modulation.
In the above scheme, when a second sequence is cyclically shifted by different timing sequences, the first sequence is included in a sequence set, where the sequence set includes K sequences obtained by cyclically shifting the second sequence by different timing sequences; k is a positive integer, and
Figure BDA0001220672150000021
in the above scheme, when N is an even number, the sequence sets are such that the cyclic shift amounts of the second sequences are respectively αk,αk+1,…,
Figure BDA0001220672150000022
The generated sequences constitute a subset of a set; alpha (alpha) ("alpha")kAn integer greater than or equal to zero.
In the above scheme, when N is an odd number, the sequence set is such that the cyclic shift amounts of the second sequences are αk,αk+1,…,
Figure BDA0001220672150000023
The generated sequences constitute a subset of a set; alpha is alphakAn integer greater than or equal to zero.
In the above scheme, when N is an even number, the K sequences satisfy at least one of the following conditions:
different sequences are mutually orthogonal;
sequences with the length of N/2 and formed by even-numbered positions of different sequences are mutually orthogonal;
sequences of length N/2 formed by odd bits of different sequences are orthogonal to each other.
In the above scheme, when the second sequence is a Zadoff-Chu sequence, N is 12, or 24, or 36.
In the above scheme, N is 12 or 24.
In the above scheme, the first modulation symbol is a modulated ACK or NACK message or data information.
In the above scheme, when sending a 1-bit ACK or NACK message, a first modulation symbol is modulated at each of M positions of the first sequence, where the first modulation symbol is an ACK or NACK message modulated by Binary Phase Shift Keying (BPSK).
In the above scheme, when sending 2-bit ACK or NACK messages, a first modulation symbol is modulated at each of M positions of the first sequence, where the first modulation symbol is an ACK or NACK message modulated by QPSK.
When a message greater than or equal to 2 bits is transmitted, the M positions of the first sequence are divided into G groups, and each group modulates the same modulation symbol.
In the above scheme, when a 2-bit message is sent, the M positions of the first sequence are divided into three groups, and each group modulates the same modulation symbol.
In the above scheme, the three groups of modulation symbols are { sG1,sG2,sG3In which s isG1For a first set of corresponding modulation symbols, sG2For modulation symbols, s, corresponding to the second group of positionsG3Modulation symbols corresponding to the third group of positions;
{sG1,sG2,sG3the value of {1,1,1}, { j, -1, -j }, { -1,1, -1}, { -j, -1, j }, or { s }G1,sG2,sG3The value of {1,1,1}, { -1, -1, -1}, { j, j }, { -j, -j, -j }; where j represents the unit imaginary number.
In the above scheme, N is 12, M is 9, sequence points with indices {1,5,9} in the first sequence are in a first group, sequence points with indices {2,6,10} in the first sequence are in a second group, and sequence points with indices {3,7,11} in the first sequence are in a third group.
In the above scheme, when a 1-bit message is sent, two first sequences are determined, and the time domain cyclic shift amounts of the two first sequences are different by N/2.
In the above scheme, when a 2-bit message is sent, four first sequences are determined, and the difference between the time domain cyclic shift amounts of any two sequences in the four first sequences is an integer multiple of N/4.
In the above scheme, the first modulation symbol carried by the first sequence is 1, or the G groups of modulation symbols carried by the first sequence are all 1.
In the foregoing scheme, when a Scheduling Request (SR) and one of an ACK message and a NACK message are simultaneously transmitted, the first sequence is a sequence corresponding to the SR.
In the above scheme, the sending the first sequence with the first modulation symbol or the first sequence with the G-group modulation on the transmission symbol includes:
mapping the first sequence with the first modulation symbol or the G groups of modulation symbols on N continuous subcarriers of a frequency domain for transmission;
alternatively, the first and second electrodes may be,
and mapping the first sequence with the first modulation symbol or the G groups of modulation symbols on N non-continuous subcarriers with equal intervals in the frequency domain for transmission.
In the above scheme, when the number of the transmission symbols is at least two, the first sequence with the first modulation symbol is sent on each transmission symbol.
In the above scheme, the first sequence corresponding to each transmission symbol is different.
In the above scheme, the frequency domain positions mapped by different transmission symbols are different.
In the above scheme, the corresponding first sequences are different for different transmitting ends, or the frequency domain positions mapped by the transmission symbols are different.
In the foregoing scheme, when the first sequence with the first modulation symbol or with the G groups of modulation symbols is sent over a transmission symbol, the method further includes:
performing cell level scrambling processing on the first sequence with the first modulation symbol or the G groups of modulation symbols;
accordingly, the scrambled first sequence with the first modulation symbol or with the G groups of modulation symbols is transmitted on the transmission symbols.
The embodiment of the invention also provides a signal receiving method, which comprises the following steps:
receiving a first sequence with a first modulation symbol on a transmission symbol; the first sequence with the first modulation symbol is obtained by modulating the first modulation symbol at M positions of the first sequence with the length of N; n is a positive integer; demodulating by using sequence points at M positions of a first sequence with the first modulation symbol to obtain a first modulation symbol; the first modulation symbol represents a modulated signal; m is a positive integer less than N; alternatively, the first and second electrodes may be,
receiving a first sequence with G groups of modulation symbols on transmission symbols; the first sequence with the G groups of modulation symbols is obtained by dividing M positions of the first sequence with the length of N into G groups and modulating the same modulation symbols in each group; n is a positive integer; g is an integer equal to or greater than 2, and G is equal to or less than N; the modulation symbols represent the modulated signals; demodulating by using the sequence points with M positions of the first sequence of the G groups of modulation symbols to obtain G groups of modulation symbols; m is a positive integer less than N; alternatively, the first and second electrodes may be,
receiving a first sequence with a first modulation symbol or with the G groups of modulation symbols on a transmission symbol; the first sequence with the first modulation symbol is obtained by modulating the first modulation symbol at M positions of the first sequence with the length of N; the first sequence with the G groups of modulation symbols is obtained by dividing M positions of the first sequence with the length of N into G groups and modulating the same modulation symbols in each group; n is a positive integer; m is a positive integer less than N; g is an integer equal to or greater than 2, and G is equal to or less than N; and carrying out non-coherent demodulation by using all sequence points of the first sequence with the corresponding modulation symbols to obtain the corresponding modulation symbols.
In the above scheme, the method further comprises;
and performing channel estimation by using sequence points at positions except M positions in the first sequence with the first modulation symbol or the G groups of modulation symbols.
In the foregoing scheme, when one of SR and ACK and NACK messages is simultaneously transmitted, the demodulating by using M sequence points of a first sequence with the first modulation symbol or with the G groups of modulation symbols to obtain a first modulation symbol includes:
and demodulating by using the sequence points with M positions of the SR sequence with the first modulation symbol or the G groups of modulation symbols to obtain a first modulation symbol.
In the above scheme, the receiving a first sequence with the first modulation symbol or with the G groups of modulation symbols on a transmission symbol includes:
receiving a first sequence with the first modulation symbol or with the G groups of modulation symbols on N consecutive subcarriers of a frequency domain;
alternatively, the first and second electrodes may be,
receiving the first sequence with the first modulation symbol or the G groups of modulation symbols on N non-consecutive subcarriers equally spaced in the frequency domain.
In the above scheme, the corresponding first sequences are different for different transmitting ends, or the frequency domain positions mapped by the transmission symbols are different.
In the above scheme, the method further comprises:
and performing cell level descrambling on the first sequence with the first modulation symbol or the G groups of modulation symbols.
An embodiment of the present invention further provides a signal transmitting apparatus, including:
an obtaining unit, configured to obtain a first sequence with a length N; n is a positive integer;
the modulation unit is used for modulating first modulation symbols at the M positions of the first sequence, or dividing the M positions of the first sequence into G groups, and modulating the same modulation symbols in each group; the first modulation symbol represents a modulated signal; the modulation symbols represent the modulated signals; m is a positive integer less than N; g is an integer equal to or greater than 2, and G is equal to or less than N;
a sending unit, configured to send a first sequence with the first modulation symbol or with the G groups of modulation symbols over a transmission symbol.
In the foregoing solution, the obtaining unit is specifically configured to:
when an SR and one of ACK and NACK messages are transmitted simultaneously, taking a sequence corresponding to the SR as the first sequence.
In the foregoing scheme, the sending unit is specifically configured to:
mapping the first sequence with the first modulation symbol or the G groups of modulation symbols on N continuous subcarriers of a frequency domain for transmission;
alternatively, the first and second liquid crystal display panels may be,
and mapping the first sequence with the first modulation symbol or the G groups of modulation symbols on N non-continuous subcarriers with equal intervals in the frequency domain for transmission.
In the above scheme, the apparatus further comprises:
a scrambling unit, configured to perform cell-level scrambling processing on the first sequence with the first modulation symbol or with the G groups of modulation symbols;
accordingly, the sending unit is configured to send the scrambled first sequence with the first modulation symbol or with the G groups of modulation symbols over the transmission symbols.
An embodiment of the present invention further provides a signal receiving apparatus, including:
a receiving unit for receiving a first sequence with a first modulation symbol on a transmission symbol; the first sequence with the first modulation symbol is obtained by modulating the first modulation symbol at M positions of the first sequence with the length of N; n is a positive integer;
a demodulation unit, configured to demodulate by using sequence points at M positions of a first sequence with the first modulation symbol to obtain a first modulation symbol; the first modulation symbol represents a modulated signal; m is a positive integer less than N; alternatively, the first and second electrodes may be,
a receiving unit, configured to receive a first sequence with G groups of modulation symbols on a transmission symbol; the first sequence with the G groups of modulation symbols is obtained by dividing M positions of the first sequence with the length of N into G groups and modulating the same modulation symbols in each group; n is a positive integer; g is an integer equal to or greater than 2, and G is equal to or less than N; the modulation symbols represent the modulated signals;
the demodulation unit is used for demodulating by using the sequence points with M positions of the first sequence of the G groups of modulation symbols to obtain G groups of modulation symbols; m is a positive integer less than N; alternatively, the first and second electrodes may be,
a receiving unit for receiving a first sequence with a first modulation symbol or with G groups of modulation symbols on transmission symbols; the first sequence with the first modulation symbol is obtained by modulating the first modulation symbol at M positions of the first sequence with the length of N; the first sequence with the G groups of modulation symbols is obtained by dividing M positions of the first sequence with the length of N into G groups and modulating the same modulation symbols in each group; n is a positive integer; m is a positive integer less than N; g is an integer equal to or greater than 2, and G is equal to or less than N;
and the demodulation unit is used for carrying out non-coherent demodulation by utilizing all sequence points of the first sequence with the corresponding modulation symbols to obtain the corresponding modulation symbols.
In the above scheme, the apparatus further comprises:
and the channel estimation unit is used for carrying out channel estimation by using sequence points at positions except M positions in the first sequence with the first modulation symbols or the first sequence with the G groups of modulation symbols.
In the foregoing solution, the demodulation unit is specifically configured to:
and when the SR and one of the ACK and NACK messages are sent simultaneously, demodulating by using the sequence points with the first modulation symbol or the M positions of the SR sequence with the G groups of modulation symbols to obtain the corresponding modulation symbols.
In the foregoing solution, the receiving unit is specifically configured to:
receiving a first sequence with the first modulation symbol or with the G groups of modulation symbols on N consecutive subcarriers of a frequency domain;
alternatively, the first and second electrodes may be,
receiving the first sequence with the first modulation symbol or the G groups of modulation symbols on N non-consecutive subcarriers equally spaced in the frequency domain.
In the above scheme, the apparatus further comprises:
and the descrambling unit is used for performing cell level descrambling on the first sequence with the first modulation symbol or the G groups of modulation symbols.
According to the signal transmission method and device provided by the embodiment of the invention, a sending end acquires a first sequence with the length of N; n is a positive integer; modulating a first modulation symbol on M positions of the first sequence; the first modulation symbol represents a modulated signal; m is a positive integer less than N; transmitting the first sequence with the first modulation symbol on a transmission symbol; or dividing M positions of the first sequence into G groups, and modulating the same modulation symbols in each group; the modulation symbols represent the modulated signals; g is an integer equal to or greater than 2, and G is equal to or less than N; transmitting a first sequence with the G groups of modulation symbols on transmission symbols; and the receiving end receives the first sequence with the first modulation symbol or with the G groups of modulation symbols on the transmission symbol; the M sequence points of the first sequence with the corresponding modulation symbols are used for demodulation, or all the sequence points of the first sequence with the corresponding modulation symbols are used for non-coherent demodulation to obtain the corresponding modulation symbols, part of the sequence points in the first sequence are used for modulating data (signals), and other sequence points can send reference signals, so that the reference signals and the data can be sent simultaneously, and lower peak-to-average ratio can be kept when the reference signals and the data are sent simultaneously.
Drawings
In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having different letter suffixes may represent different examples of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed herein.
Fig. 1 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method for receiving signals according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a signal transmission method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a second user terminal modulating data on a predefined sequence odd-numbered bit with a length N-12 over 1 symbol according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a user terminal modulating data on even bits of a predefined Zadoff-Chu sequence with a length N of 24 over 1 symbol according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a five-user terminal according to an embodiment of the present invention sending SR and ACK/NACK messages simultaneously in 1 symbol;
fig. 7 is a schematic diagram of a six-user terminal according to an embodiment of the present invention modulating data on 2 symbols at even bits of a predefined Zadoff-Chu sequence with a length N of 24;
fig. 8 is a schematic diagram of a seventh ue according to an embodiment of the present invention, which maps a predefined sequence to frequency-domain equally-spaced subcarriers on 1 symbol;
fig. 9 is a schematic diagram of an eight-user terminal modulating data on 1 symbol at 4 predetermined positions in a predefined sequence with a length N equal to 12 according to an embodiment of the present invention;
fig. 10 is a schematic diagram of nine user terminals modulating data at three groups of positions of a predefined sequence on 1 symbol according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of an eleventh exemplary signal transmitting apparatus according to the present invention;
fig. 12 is a schematic structural diagram of an eleventh signal receiving apparatus according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of an eleventh signal transmission system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Currently, the uplink control symbol may only occupy 1-2 Orthogonal Frequency Division Multiplexing (OFDM) symbols or Single Carrier-Frequency Division Multiplexing (SC-FDMA) symbols. In this case, therefore, the performance of the Physical Uplink Control Channel (PUCCH) may become a bottleneck of cell coverage. For this reason, the uplink single carrier characteristic should be maintained as much as possible to support higher coverage. When the PUCCH only occupies one symbol, how to transmit the Reference Signal (RS) and the data (PUCCH) on one symbol and keep the peak-to-average ratio low becomes a problem.
In addition, the PUCCH may be used to transmit an ACKnowledgement (ACK), a non-ACKnowledgement (NACK) message, and an SR. In the PUCCH Format 1/1a/1b, when the ACK/NACK message and the SR are transmitted simultaneously, the ACK/NACK message can be transmitted by using the channel resource of the SR, and the multiplexing problem of the ACK/NACK message and the SR is well solved. However, when the number of symbols of the PUCCH is only 1, the channel structure designed by the 5G system should also be able to efficiently solve the problem of multiplexing the ACK/NCK message and the SR.
Based on this, in various embodiments of the invention: a sending end obtains a first sequence with the length of N; n is a positive integer; modulating a first modulation symbol on M positions of the first sequence; the first modulation symbol represents a modulated signal; m is a positive integer less than N; transmitting a first sequence with the first modulation symbol on a transmission symbol; or dividing M positions of the first sequence into G groups, and modulating the same modulation symbols in each group; the modulation symbols represent the modulated signals; g is an integer equal to or greater than 2, and G is equal to or less than N; transmitting a first sequence with the G groups of modulation symbols on transmission symbols; and the receiving end receives the first sequence with corresponding modulation symbols on the transmission symbols; and demodulating by using the sequence points with M positions of the first sequence with the corresponding modulation symbols, or performing non-coherent demodulation by using all the sequence points of the first sequence with the corresponding modulation symbols to obtain the corresponding modulation symbols.
Example one
The method for sending signals in the embodiment of the invention is applied to a user terminal, and as shown in fig. 1, the method comprises the following steps:
step 101: acquiring a first sequence with the length of N;
here, N is a positive integer.
In practice, the first sequence is a predefined sequence. That is, the user terminal has previously known the first sequence.
Here, in an embodiment, the first sequence may be obtained by performing phase rotation on the second sequence in different frequency domains, and/or obtained by performing cyclic shift on the second sequence in different timing sequences; wherein the content of the first and second substances,
the second sequence may be a sequence of non-zero constant amplitude and length N.
The second sequence can be a Zadoff-Chu sequence or obtained by converting the Zadoff-Chu sequence.
The second sequence is obtained by converting a Zadoff-Chu sequence, and specifically can be: the second sequence is obtained by truncation of a Zadoff-Chu sequence or cyclic extension of the Zadoff-Chu sequence.
Here, when the second sequence is a Zadoff-Chu sequence, N is 12, or 24, or 36.
In practical applications, the second sequence may also be an optional sequence obtained by QPSK phase modulation. At this time, N may be 12 or 24.
When the first sequence is obtained by cyclic shifting of a second sequence through different time sequences, the first sequence is contained in a sequence set, and the sequence set contains K sequences obtained by cyclic shifting of the second sequence through different time sequences; k is a positive integer, and
Figure BDA0001220672150000101
wherein, when N is an even number, the sequence set is such that the cyclic shift amounts of the second sequences are respectively αk,αk+1,…,
Figure BDA0001220672150000102
The generated sequences constitute a subset of the set.
When N is odd number, the sequence set is that the cyclic shift amount of the second sequence is respectively alphak,αk+1,…,
Figure BDA0001220672150000111
The generated sequences constitute a subset of the set.
Here, αkGreater than or equal to another integer.
Figure BDA0001220672150000112
Indicating rounding up.
Wherein when N is an even number, the K sequences satisfy at least one of the following conditions:
different sequences are mutually orthogonal;
sequences with the length of N/2 and formed by even-numbered positions of different sequences are mutually orthogonal;
sequences of length N/2 formed by odd bits of different sequences are orthogonal to each other.
When the second sequence is a Zadoff-Chu sequence, N may be 12, 24, or 36.
Step 102: modulating first modulation symbols at M positions of the first sequence or modulating the same modulation symbols in each group of G groups into which the M positions are divided;
here, the first modulation symbol represents a modulated signal.
M is a positive integer less than N.
When the same modulation symbols are modulated in each group of the G groups into which the M positions are divided, the transmitting end divides the M positions of the first sequence into the G groups, and the same modulation symbols are modulated in each group.
Wherein the modulation symbols represent modulated signals; g is an integer equal to or greater than 2, and G is equal to or less than N.
In practical applications, the M locations are predefined, that is, the user terminal implements the specific locations for which the M locations are known.
In one embodiment, the M positions may be even-numbered sequence point positions of the first sequence, and may also be odd-numbered sequence point positions of the first sequence.
In practical applications, when the M positions are even-numbered sequence point positions of the first sequence, the M positions may be specifically a subset of all even-numbered sequence point positions of the first sequence.
When the M positions are odd-numbered sequence point positions of the first sequence, the M positions may specifically be a subset of all odd-numbered point positions of the first sequence.
In practical applications, the signal may be an uplink control signal, such as an ACK or NACK message.
Thus, the first modulation symbol may be a modulated ACK or NACK message or data information.
When sending 1-bit ACK or NACK messages, modulating first modulation symbols at M positions of the first sequence, where the first modulation symbols are the ACK or NACK messages modulated by BPSK.
When 2-bit ACK or NACK information is sent, modulating first modulation symbols at M positions of the first sequence, wherein the first modulation symbols are the ACK or NACK information modulated by QPSK.
The uplink refers to: the direction in which the user terminal sends information to the base station.
When a message greater than or equal to 2 bits is transmitted, the M positions of the first sequence are divided into G groups, and each group modulates the same modulation symbol.
Specifically, when a 2-bit message is transmitted, the M positions of the first sequence are divided into three groups, each group modulating the same modulation symbol.
Wherein three groups of modulation symbols are defined as sG1,sG2,sG3In which s isG1For a first set of corresponding modulation symbols, sG2For modulation symbols, s, corresponding to the second set of positionsG3Modulation symbols corresponding to the third group of positions;
{sG1,sG2,sG3the value of {1,1,1}, { j, -1, -j }, { -1,1, -1}, { -j, -1, j }, or { s }G1,sG2,sG3The value is one of {1,1,1}, { -1, -1, -1}, { j, j, j }, { -j, -j, -j }.
Where j represents the unit imaginary number.
Here, when N is 12 and M is 9, the sequence points with indices {1,5,9} in the first sequence are set as a first group, the sequence points with indices {2,6,10} in the first sequence are set as a second group, and the sequence points with indices {3,7,11} in the first sequence are set as a third group.
In an embodiment, when a 1-bit message is transmitted, two first sequences are determined, the time domain cyclic shift amounts of the two first sequences differ by N/2.
When a 2-bit message is transmitted, four first sequences are determined, and the difference of the time domain cyclic shift amounts of any two sequences in the four first sequences is an integral multiple of N/4.
In an embodiment, the first modulation symbol carried by the first sequence is 1, or G groups of modulation symbols carried by the first sequence are all 1.
When the SR and one of the ACK and NACK messages need to be sent simultaneously, the first sequence is a sequence corresponding to the SR, that is, an SR sequence.
Here, the SR sequence refers to a sequence already carrying an SR.
Step 103: a first sequence with corresponding modulation symbols is transmitted over the transmission symbols.
Specifically, a first sequence with the first modulation symbol or with the G groups of modulation symbols is mapped on N consecutive subcarriers in the frequency domain and transmitted; or mapping the first sequence with the first modulation symbol or the G groups of modulation symbols on N non-continuous subcarriers with equal intervals in the frequency domain for transmission.
The first sequence with the first modulation symbol or with the G groups of modulation symbols is mapped on N non-consecutive subcarriers equally spaced in the frequency domain for transmission, which may be beneficial to transmit Sounding Reference Signals (SRS) at un-mapped frequency domain positions (on subcarriers).
In practical application, the number of the transmission symbols can be at least two;
accordingly, when the number of transmission symbols is at least two, a first sequence with the first modulation symbol is transmitted on each transmission symbol.
Wherein, the first sequence corresponding to each transmission symbol is different.
The frequency domain positions mapped by different transmission symbols are different, so that frequency division gains can be obtained.
For different sending ends, the corresponding first sequences are different, or the frequency domain positions mapped by the transmission symbols are different, so that the interference between different user terminals in a network cell can be avoided.
In practical application, different first sequences may be used between different network cells in order to reduce inter-cell interference, or cell-level scrambling may be performed when different network cells transmit signals.
Based on this, when the first sequence with the first modulation symbol or with the G groups of modulation symbols is transmitted on transmission symbols, the method further comprises:
performing cell level scrambling processing on the first sequence with the first modulation symbol or the G groups of modulation symbols;
accordingly, the scrambled first sequence with the first modulation symbol or with the G groups of modulation symbols is transmitted on the transmission symbols.
Here, in practical application, the cell-specific scrambling sequence may be used to perform cell-level scrambling on the first sequence with the first modulation symbols or the G groups of modulation symbols.
Correspondingly, an embodiment of the present invention further provides a signal receiving method, which is applied to a base station, and as shown in fig. 2, the method includes the following steps:
step 201: receiving a first sequence with the first modulation symbol or with the G groups of modulation symbols on a transmission symbol;
specifically, a first sequence with the first modulation symbol or with the G groups of modulation symbols is received on N consecutive subcarriers of the frequency domain; or, receiving the first sequence with the first modulation symbol or the G groups of modulation symbols on N non-consecutive subcarriers equally spaced in the frequency domain.
Wherein when the first sequence with the first modulation symbol or with the G groups of modulation symbols is mapped and transmitted on N consecutive subcarriers of a frequency domain, the first sequence with the first modulation symbol or with the G groups of modulation symbols is received on the N consecutive subcarriers of the frequency domain.
When the first sequence with the first modulation symbols or the G groups of modulation symbols is mapped on N non-continuous subcarriers with equal intervals in the frequency domain and is sent, the first sequence with the first modulation symbols or the G groups of modulation symbols is received on the N non-continuous subcarriers with equal intervals in the frequency domain.
Step 202: and demodulating by using the sequence points with the M positions of the first modulation symbol or the first sequence with the G groups of modulation symbols or performing non-coherent demodulation by using all the sequence points to obtain a corresponding modulation symbol.
For steps 201-202, specifically, the receiving end receives a first sequence with a first modulation symbol on a transmission symbol; the first sequence with the first modulation symbol is obtained by modulating the first modulation symbol at M positions of the first sequence with the length of N; and demodulating by using the sequence points at M positions of the first sequence with the first modulation symbol to obtain the first modulation symbol.
The receiving end receives a first sequence with G groups of modulation symbols on a transmission symbol; the first sequence with the G groups of modulation symbols is obtained by dividing M positions of the first sequence with the length of N into G groups and modulating the same modulation symbols in each group; and demodulating by using the sequence points at the M positions of the first sequence with the G groups of modulation symbols to obtain G groups of modulation symbols.
When the receiving end receives the first sequence with the first modulation symbol or the G groups of modulation symbols on the transmission symbol, it can also use all sequence points of the first sequence with the corresponding modulation symbols to perform non-coherent demodulation, so as to obtain the corresponding modulation symbols.
Here, in practical application, the method may further include:
and performing channel estimation by using sequence points at positions except M positions in the first sequence with the first modulation symbol or the G groups of modulation symbols.
Here, after the cell-level scrambling process is performed on the first sequence with the first modulation symbol or the G groups of modulation symbols, before performing this step, the method may further include:
and performing cell level descrambling on the first sequence with the first modulation symbol or the G groups of modulation symbols.
Here, in practical application, the cell-specific scrambling code sequence may be used to perform cell-level descrambling on the first sequence with the first modulation symbol or the G groups of modulation symbols.
In practical application, when the SR and one of the ACK and NACK messages are simultaneously transmitted, the M-position sequence points of the SR sequence with the first modulation symbol or the G group modulation symbols are used for demodulation, so as to obtain the corresponding modulation symbols.
It should be noted that: for different transmitting ends (user terminals), the corresponding first sequences are different, or the frequency domain positions mapped by the transmission symbols are different.
Correspondingly, an embodiment of the present invention further provides a signal transmission method, as shown in fig. 3, the method includes:
step 301: a sending end acquires a first sequence with the length of N;
here, N is a positive integer.
Step 302: the sending end modulates first modulation symbols at M positions of the first sequence or modulates the same modulation symbols in each group in G groups into which the M positions are divided;
here, the first modulation symbol represents a modulated signal; m is a positive integer less than N.
The modulation symbols represent the modulated signals; g is an integer equal to or greater than 2, and G is equal to or less than N.
Step 303: the transmitting end transmits a first sequence with a corresponding modulation symbol on a transmission symbol;
step 304: a receiving end receives a first sequence with corresponding modulation symbols on transmission symbols;
step 305: and the receiving end demodulates by using the sequence points at the M positions of the first sequence with the corresponding modulation symbols or performs incoherent demodulation by using all the sequence points to obtain the corresponding modulation symbols.
It should be noted that: the specific processing procedures of the transmitting end and the receiving end have been described in detail above, and are not described in detail here.
In the signal transmission method provided by the embodiment of the invention, a sending end acquires a first sequence with the length of N; n is a positive integer; modulating a first modulation symbol on M positions of the first sequence; the first modulation symbol represents a modulated signal; m is a positive integer less than N; transmitting a first sequence with the first modulation symbol on a transmission symbol; or dividing M positions of the first sequence into G groups, and modulating the same modulation symbol in each group; the modulation symbols represent the modulated signals; g is an integer equal to or greater than 2, and G is equal to or less than N; transmitting a first sequence with the G groups of modulation symbols on transmission symbols; and the receiving end receives the first sequence with corresponding modulation symbols on the transmission symbols; and demodulating by using the sequence points at the M positions of the first sequence with the corresponding modulation symbols or performing non-coherent demodulation by using all the sequence points of the first sequence with the corresponding modulation symbols to obtain corresponding modulation symbols, modulating data (signals) by using part of the sequence points in the first sequence, wherein other sequence points can transmit reference signals, so that the reference signals and the data can be transmitted simultaneously, and the lower peak-to-average ratio can be kept low when the reference signals and the data are transmitted simultaneously.
In addition, in practical application, the value of N can be larger, so that the inter-cell interference is lower.
In addition, when SR and one of ACK and NACK messages, the first sequence is a sequence corresponding to the SR, i.e., an SR sequence, so that multiplexing of ACK/NACK messages and SR can be achieved.
Example two
On the basis of the first embodiment, the present embodiment describes in detail the transmission method of the reference signal and the data.
Fig. 4 is a diagram illustrating that a user terminal modulates data (i.e., control information) on 1 symbol in a predefined sequence of odd bits with a length N-12.
As can be seen from fig. 4, after the ACK/NACK message (control information) is BPSK or QPSK modulated, a modulated ACK/NACK message S is obtainedkThen, S iskMultiplying by odd bits of the predefined sequence W (n), i.e. modulating S in the odd bits of the predefined sequence W (n)kAnd the rest sequence points are kept unchanged, namely sequence points of even number positions are kept unchanged and then mapped to 12 continuous subcarriers of the frequency domain for transmission.
W (N) is a QPSK candidate sequence with a length N of 12.
Here, the QPSK candidate sequence may be expressed in the frequency domain as
Figure BDA0001220672150000161
N is more than or equal to 0 and less than N, wherein,
Figure BDA0001220672150000162
can be taken from 1, -1, 3, -3. Of different base sequences
Figure BDA0001220672150000163
The values are different.
For determined base sequences, i.e. determined
Figure BDA0001220672150000164
Taking values, the phase deflection sequence in its frequency domain can be expressed as:
Figure BDA0001220672150000165
wherein
Figure BDA0001220672150000166
Representing the amount of phase rotation, α may be defined as the amount of cyclic shift in the time domain.
Assumed to be determined
Figure BDA0001220672150000167
The value is [ -1,1, 3, -3, 3, 3, 1,1, 3, 1, -3, 3]Its corresponding base sequence in the frequency domain and its phase-shifted sequence obtained through 5 different cyclic shift amounts are shown in table 1.
Figure BDA0001220672150000171
TABLE 1
In practical application, any one of the above materials can be selected
Figure BDA0001220672150000172
Each of the sequences is cyclically shifted by an amount alphak,αk+1,…,
Figure BDA0001220672150000173
The generated sequences constitute a set of predefined sequences. For example, assume that αkWhen the sequence is 0, the 6 columns in table 1 can be selected as QPSK selection sequences of different ues, i.e. predefined sequences.
The selected sequence can satisfy at least one of the following conditions:
predefined sequences of different user terminals are mutually orthogonal;
sequences with the length of 6, which are formed by even numbers of the predefined sequences of different user terminals, are mutually orthogonal;
the length-6 sequences formed by the odd bits of the predefined sequences of different user terminals are mutually orthogonal.
After the predefined sequence is sent out, for the receiving end, according to the local sequence, the channel estimation can be performed by using the even bits (characterizing reference signals) in the sequence, and then the effective data of the odd bits is demodulated. And different user terminals are distinguished by adopting different predefined sequences.
EXAMPLE III
On the basis of the first embodiment, the present embodiment describes in detail the transmission method of the reference signal and the data.
Fig. 5 is a schematic diagram of a user terminal modulating data (i.e., control information) on 1 symbol in even bits of a predefined Zadoff-Chu sequence with a length N-24.
As can be seen from fig. 5, after the ACK/NACK (control information) message is BPSK or QPSK modulated, the modulated ACK/NACK message S is obtainedkThen, S iskMultiplying by even bits of the predefined sequence W (n), i.e. modulating S in each even bit of the predefined sequence W (n)kAnd the rest sequence points are kept unchanged, namely the odd-numbered sequence points are kept unchanged and then mapped to 24 continuous subcarriers of the frequency domain for transmission.
W (N) is a Zadoff-Chu sequence having a length N of 24.
Here, the Zadoff-Chu sequence may be represented as a sequence in the frequency domain
Figure BDA0001220672150000181
N is more than or equal to 0 and less than N, wherein q is a base sequence index and is relatively prime with the length N.
For a determined base sequence, i.e. a determined q value, the phase deflection sequence in its frequency domain can be expressed as:
Figure BDA0001220672150000182
wherein
Figure BDA0001220672150000183
Which represents the amount of phase rotation, α can be defined as the amount of cyclic shift in the time domain.
In practical application, any one of them can be selected
Figure BDA0001220672150000184
Each of the sequences is cyclically shifted by an amount alphak,αk+1,…,
Figure BDA0001220672150000185
The generated sequence constructs constitute the set of predefined sequences. For example, assume αk12, a predefined sequence may be selected from sequences generated by cyclic shift amounts of 12,13, …, and 23 of a base sequence.
At this time, the selected predefined sequence satisfies at least one of the following conditions:
predefined sequences of different user terminals are mutually orthogonal;
sequences with the length of 12, which are formed by even numbers of the predefined sequences of different user terminals, are mutually orthogonal;
the length-12 sequences formed by the odd bits of the predefined sequences of different user terminals are mutually orthogonal.
In addition, the predefined sequence still maintains good peak-to-average ratio in time domain after the row control information is superposed on the preset position.
After the predefined sequence is sent out, for the receiving end, according to the local sequence, the odd bits (characterizing reference signals) in the sequence are used for channel estimation, and then the effective data of the even bits are demodulated. And different user terminals are distinguished by adopting different predefined sequences.
Example four
On the basis of the first and third embodiments, the present embodiment describes the predefined sequence in detail.
In this embodiment, the predefined sequence length N is greater than 24.
It should be noted that: the predefined sequence may be generated by an even length ZC sequence as described in example three.
It can also be generated by truncating ZC sequences of odd length or by cyclically extending ZC sequences of odd length.
Wherein odd-length ZC sequences are in the frequency domainCan be expressed as
Figure BDA0001220672150000191
N is more than or equal to 0 and less than X, wherein q is a base sequence index and is relatively prime with the length X.
For a determined base sequence, i.e. a determined q value, the phase deflection sequence in its frequency domain can be expressed as:
Figure BDA0001220672150000192
wherein
Figure BDA0001220672150000193
For the phase rotation amount, α may be defined as a cyclic shift amount in the time domain.
For example, N-36, which may be generated from a ZC sequence of length X-31.
In practical application, any one of them can be selected
Figure BDA0001220672150000194
Each of the cyclic shift amounts of a base sequence is alphak,αk+1,…,
Figure BDA0001220672150000195
The generated sequences constitute a set of predefined sequences. At alphakFor example, 6, a predefined sequence may be formed by sequences generated from a base sequence with cyclic shift amounts of 6,7, …, and 23.
These 18 predefined sequences then satisfy at least one of the following conditions:
predefined sequences of different user terminals are mutually orthogonal;
sequences with the length of 18, which are formed by even-numbered positions of the predefined sequences of different user terminals, are mutually orthogonal;
the length 18 sequences formed by odd bits of the predefined sequences of different user terminals are mutually orthogonal.
EXAMPLE five
On the basis of the first embodiment, the present embodiment describes in detail the transmission method of the reference signal and the data.
Fig. 6 is a diagram illustrating that the user terminal simultaneously transmits SR and ACK/NACK messages in 1 symbol.
Let W (n) be a predefined sequence assigned to the user terminal for sending ACK/NACK messages, WSR(n) is a predefined sequence allocated to the user terminal for transmitting the SR.
W(n)，WSRAnd (N) are all QPSK machine selection sequences with the length N being 24.
When the SR and the ACK/NACK messages are transmitted simultaneously, the predefined sequence for transmitting the ACK/NACK message is defined as WSR(n) of (a). Wherein, WSR(n) carries the SR.
As can be seen from fig. 6, after the ACK/NACK (control information) message is BPSK or QPSK modulated, the modulated ACK/NACK message S is obtainedkThen, S iskMultiplying in a predefined sequence WSREven number of (n), i.e. in a predefined sequence WSREven number bit average modulation S of (n)kAnd the rest sequence points are kept unchanged, namely sequence points with even-odd digits are kept unchanged, and then are mapped to 24 continuous subcarriers of the frequency domain for transmission.
Wherein the QPSK's selected sequence for transmitting ACK/NACK messages can be represented in the frequency domain as
Figure BDA0001220672150000201
N is more than or equal to 0 and less than N, wherein
Figure BDA0001220672150000202
Values in 1, -1, 3, -3 can be taken. Of different base sequences
Figure BDA0001220672150000203
The values are different.
For determined base sequences, i.e. determined
Figure BDA0001220672150000204
Taking values, the phase deflection sequence in its frequency domain can be expressed as:
Figure BDA0001220672150000205
wherein
Figure BDA0001220672150000206
For the phase rotation amount, α may be defined as a cyclic shift amount in the time domain.
After sending out the predefined sequence, for the receiving end, the receiving end utilizes the local sequence WSR(n) SR detection and ACK/NACK message detection (demodulation of even-numbered valid data) are performed separately. And different user terminals are distinguished by adopting different predefined sequences. Of course, the receiving end can use odd bits (characterizing the reference signal) in the sequence for channel estimation.
Example six
On the basis of the first embodiment, the present embodiment describes in detail the transmission method of the reference signal and the data.
Fig. 7 is a diagram illustrating a user terminal modulating data (i.e., control information) on 2 symbols at even bits of a predefined Zadoff-Chu sequence of length N-24.
As can be seen from fig. 7, after the ACK/NACK message (control information) is BPSK or QPSK modulated, the modulated ACK/NACK message S is obtainedkThen, S iskMultiplying in a predefined sequence W1(n)、W2Even number of (n), i.e. in a predefined sequence W1(n)、W2Even number bit average modulation of (n) SkAnd the rest sequence points are kept unchanged, namely the odd-numbered sequence points are kept unchanged and then mapped to 24 continuous subcarriers of the frequency domain for transmission.
Wherein, W1(n)、W2(N) are all Zadoff-Chu sequences of length N-24.
Here, the mapped subcarrier positions on each symbol are in different frequency domain positions, and thus, it is advantageous to obtain frequency division gains.
After sending out the predefined sequence, for the receiving end, according to the local sequence, the odd number subcarriers (characterizing reference signals) on each symbol can be used for channel estimation, and then the effective data of the even number bits can be demodulated. And different user terminals are distinguished by adopting different predefined sequences.
In practical application, the two symbols may be two independent symbols, or two symbols obtained by splitting one symbol, where the splitting refers to obtaining a shorter time domain symbol with a larger subcarrier spacing.
EXAMPLE seven
On the basis of the first embodiment, the present embodiment describes in detail the transmission method of the reference signal and the data.
Fig. 8 is a diagram illustrating a user terminal mapping a predefined sequence to frequency-domain equally spaced subcarriers over 1 symbol.
Let w (N) be a QPSK candidate sequence of length N-12, indicating a predefined sequence assigned to the user terminal for the occurrence of an ACK/NACK message.
As can be seen from fig. 8, after the ACK/NACK message (control information) is BPSK or QPSK modulated, the modulated ACK/NACK message S is obtainedkThen, S iskMultiplying by odd bits of the predefined sequence W (n), i.e. modulating S in the odd bits of the predefined sequence W (n)kAnd the rest sequence points are kept unchanged, namely sequence points at even number positions are kept unchanged and then are mapped to 12 subcarriers at equal intervals in the frequency domain for transmission, and the mapping structure is favorable for transmitting the SRS at the position of the unmapped frequency domain.
Example eight
On the basis of the first embodiment, the present embodiment describes in detail the transmission method of the reference signal and the data.
Fig. 9 is a schematic diagram of a user terminal modulating data (i.e., control information) on 1 symbol at 4 predetermined positions in a predefined sequence with a length N of 12.
Assume that the 4 predetermined positions are the 1 st, 4 th, 7 th, 10 th sequence points of the predefined sequence.
As can be seen from fig. 9, after the ACK/NACK message (control information) is BPSK or QPSK modulated, the modulated ACK/NACK message S is obtainedkThen, S iskMultiplying by the 1,4,7,10 sequence points in the predefined sequence W (n), i.e. modulating S at each of the 1,4,7,10 sequence points of the predefined sequence W (n)kAnd the rest sequence points are kept unchanged and then mapped to 12 continuous subcarriers of the frequency domain for transmission.
W (N) is a QPSK candidate sequence with a length N of 12.
Then at the receiving end, channel estimation can be performed by using sequence point positions 0,2,3,5,6,8,9, and 11 respectively according to the local sequence, and then the modulated data at sequence point positions 1,4,7, and 10 are demodulated. And different user terminals are distinguished by adopting different predefined sequences. Sequences formed by the 1 st, 4 th, 7 th and 10 th sequence points of the predefined sequences of different user terminals are mutually orthogonal, and sequences formed by the 0 th, 2 nd, 3 th, 5 th, 6 th, 8 th, 9 th and 11 th sequence points of the predefined sequences of different user terminals are mutually orthogonal.
Example nine
Fig. 10 is a schematic diagram of nine user terminals modulating data at 3 groups of positions of a predefined sequence on 1 symbol according to an embodiment of the present invention; in the figure, the sequence length is 12, the number of bits of transmission information is 2 bits, and the modulation scheme used is QPSK.
In fig. 10, the sequence points are grouped into three groups, where one group is sequence points {1,5,9}, one group is sequence points {2,6,10}, and one group is sequence points {3,7,11}, and each group of points modulates the same modulation symbol. Wherein each group of corresponding modulation symbols is sk1，sk2，sk3. Set of definitions sk1,sk2,sk3And (5) determining an aggregate value according to four possibilities of 2bit information, namely 00,01,10, 11. Wherein, { s {k1,sk2,sk3Is one of {1,1,1}, { j, -1, -j }, { -1,1, -1}, { -j, -1, j }, e.g., when 00 is transmitted, { s }k1,sk2,sk3Is {1,1,1 }.
Different user terminals adopt different cyclic shift sequences of the same base sequence, and preferably, the difference of the cyclic shift amounts of the different user terminals is a, where a mod 3 is 1 or 2. In this case, sequences of {1,2,3,5,6,7,9,10,11} sequence points of different ues are orthogonal to each other, and sequences of {0,4,8} sequence points are orthogonal to each other.
At the receiving end, demodulation can be performed using coherent detection. Specifically, channel estimation is performed by using positions of sequence points 0,4, and 8 in the figure, and then three groups of sequence points are demodulated. Or, because the sequences adopted by different user terminals are orthogonal to each other and are still orthogonal after modulating the upper modulation symbol, the user at the receiving end can judge through the peak value according to the incoherent detection.
Further, the receiving end can select a receiving end detection method according to the channel condition, for example, coherent detection is adopted when the signal-to-noise ratio is high, incoherent detection is adopted when the signal-to-noise ratio is low, or coherent and incoherent combined detection is adopted.
Example ten
This embodiment gives a transmission method when the base station predefines a plurality of first sequences to each user terminal. When transmitting 1-bit information, such as 1-bit ACK/NACK information, the base station defines two predefined sequences for the user terminal. The predefined sequences satisfy that the time domain cyclic shift amounts differ by N/2. At this time, the number of users transmitting 1-bit information that can be multiplexed in the same frequency domain resource location is N/2. As when N is 12, sequence combination pairs (0,6), (1,7), (2,8), (3,9), (4,10), (5,11) are defined, different user terminals select different sequence pairs, and one of the sequence pairs is used for transmission when ACK or NACK is transmitted for a certain user terminal.
The value in parentheses is the amount of cyclic shift in the time domain based on a certain sequence.
When sending 2 bits of information, the base station defines four first sequences for the user terminal, and the difference of the time domain cyclic shift values of any two sequences is an integral multiple of N/4. For example, when N is 12, sequence combination pairs (0,3,6,9), (1,4,7,10), (2,5,8,11) are defined, different user terminals select different sequence pairs, and one of the sequence pairs is selected for a specific user terminal to transmit according to the transmitted 2-bit information.
When the embodiment is adopted to determine a plurality of first predefined sequences, a receiving end user can judge through a peak value according to incoherent detection, or carry out channel estimation on the positions of partial sequence points to realize coherent detection.
When a plurality of first sequences are defined, it is preferable that the first modulation symbols or the G groups of modulation symbols according to the embodiment of the present invention are all 1.
EXAMPLE eleven
To implement the method of the embodiment of the present invention, the embodiment provides a signal sending apparatus, which may be disposed in a user terminal, as shown in fig. 11, where the apparatus includes:
an obtaining unit 111, configured to obtain a first sequence with a length N; n is a positive integer;
a modulating unit 112, configured to modulate first modulation symbols at the M positions of the first sequence, or divide the M positions of the first sequence into G groups, where the same modulation symbol is modulated in each group; the first modulation symbol represents a modulated signal; the modulation symbols represent the modulated signals; m is a positive integer less than N; g is an integer equal to or greater than 2, and G is equal to or less than N;
a sending unit 113, configured to send the first sequence with the first modulation symbol or with the G groups of modulation symbols over a transmission symbol.
The obtaining unit 111 is specifically configured to:
when an SR and one of ACK and NACK messages are simultaneously transmitted, taking a sequence corresponding to the SR as the first sequence. I.e. the SR sequence as the first sequence.
The sending unit 113 is specifically configured to:
mapping the first sequence with the first modulation symbol or the G groups of modulation symbols on N continuous subcarriers of a frequency domain for transmission;
alternatively, the first and second electrodes may be,
and mapping the first sequence with the first modulation symbol or the G groups of modulation symbols on N non-continuous subcarriers with equal intervals in the frequency domain for transmission.
In an embodiment, the apparatus may further include:
a scrambling unit, configured to perform cell-level scrambling processing on the first sequence with the first modulation symbol or with the G groups of modulation symbols;
accordingly, the sending unit 113 is configured to send the scrambled first sequence with the first modulation symbol or with the G groups of modulation symbols over the transmission symbols.
In practical applications, the obtaining Unit 111, the modulating Unit 112 and the scrambling Unit may be implemented by a Processor (such as a Central Processing Unit (CPU), a Microprocessor (MCU), a Digital Signal Processor (DSP), a Programmable logic Array (FPGA), etc.) in the Signal transmitting apparatus; the transmitting unit 113 may be implemented by a transceiver in a signal transmitting apparatus.
In order to implement the method according to the embodiment of the present invention, this embodiment further provides a signal receiving apparatus, which may be disposed in a base station, as shown in fig. 12, where the apparatus includes:
a receiving unit 121, configured to receive a first sequence with the first modulation symbol on a transmission symbol; the first sequence with the first modulation symbol is obtained by modulating the first modulation symbol at M positions of the first sequence with the length of N; n is a positive integer;
a demodulating unit 122, configured to demodulate by using sequence points at M positions of a first sequence with the first modulation symbol, so as to obtain a first modulation symbol; the first modulation symbol represents a modulated signal; m is a positive integer less than N.
Or, the receiving unit 121 is configured to receive a first sequence with G groups of modulation symbols on a transmission symbol; the first sequence with the G groups of modulation symbols is obtained by dividing M positions of the first sequence with the length of N into G groups and modulating the same modulation symbols in each group; n is a positive integer; g is an integer equal to or greater than 2, and G is equal to or less than N; the modulation symbols represent the modulated signals;
a demodulating unit 122, configured to demodulate by using the sequence points at M positions of the first sequence with the G groups of modulation symbols, to obtain G groups of modulation symbols; m is a positive integer less than N.
Or, the receiving unit 121 is configured to receive a first sequence with a first modulation symbol or with the G groups of modulation symbols on a transmission symbol; the first sequence with the first modulation symbol is obtained by modulating the first modulation symbol at M positions of the first sequence with the length of N; the first sequence with the G groups of modulation symbols is obtained by dividing M positions of the first sequence with the length of N into G groups and modulating the same modulation symbols in each group; n is a positive integer; m is a positive integer less than N; g is an integer equal to or greater than 2, and G is equal to or less than N;
a demodulating unit 122, configured to perform non-coherent demodulation using all sequence points of the first sequence with corresponding modulation symbols, so as to obtain corresponding modulation symbols.
Wherein, the device can also include:
a channel estimation unit 123, configured to perform channel estimation using sequence points at positions other than M positions in the first sequence with the first modulation symbol or with the G groups of modulation symbols.
The demodulation unit 122 is specifically configured to:
and when the SR and one of the ACK and NACK messages are sent simultaneously, demodulating by using the sequence points with the first modulation symbol or M positions of the SR sequence with the G groups of modulation symbols to obtain a first modulation symbol.
The receiving unit 121 is specifically configured to:
receiving a first sequence with the first modulation symbol or with the G groups of modulation symbols on N consecutive subcarriers of a frequency domain;
alternatively, the first and second electrodes may be,
receiving the first sequence with the first modulation symbol or the G groups of modulation symbols on N non-consecutive subcarriers equally spaced in the frequency domain.
In an embodiment, the apparatus may further include:
and the descrambling unit is used for performing cell level descrambling on the first sequence with the first modulation symbol or the G groups of modulation symbols.
In practical applications, the receiving unit 121 may be implemented by a transceiver in a signal receiving device, and the demodulating unit 122, the channel estimating unit 123 and the descrambling unit may be implemented by a processor (such as a CPU, an MCU, a DSP or an FPGA, etc.) in the signal receiving device.
Correspondingly, to implement the method of the embodiment of the present invention, the embodiment further provides a signal transmission system, as shown in fig. 13, the system includes:
a sending end 131, configured to obtain a first sequence with a length of N; here, N is a positive integer. Step 302: the sending end modulates first modulation symbols at M positions of the first sequence or modulates the same modulation symbols in each group in G groups into which the M positions are divided; the corresponding modulation symbols represent the modulated signals; m is a positive integer less than N; g is an integer equal to or greater than 2, and G is equal to or less than N; and transmitting the first sequence with the corresponding modulation symbols on transmission symbols;
a receiving end 132, configured to receive a first sequence with the corresponding modulation symbols on transmission symbols; and demodulating by using the sequence points at the M positions of the first sequence with the corresponding modulation symbols or performing incoherent demodulation by using all the sequence points to obtain the corresponding modulation symbols.
In practical applications, the transmitting end 131 may be a user terminal, and accordingly, the receiving end 132 may be a base station.
It should be noted that: the specific functions of the sender 131 and the receiver 132 are described in detail above, and are not described in detail here.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (46)

1. A method for signaling, the method comprising:
acquiring a first sequence with the length of N; n is a positive integer;
modulating first modulation symbols at all the M positions of the first sequence; the first modulation symbol represents a modulated signal; m is a positive integer less than N; transmitting a first sequence with the first modulation symbol on a transmission symbol; or dividing M positions of the first sequence into G groups, and modulating the same modulation symbols in each group; the modulation symbols represent the modulated signals; g is an integer equal to or greater than 2, and G is equal to or less than N; transmitting a first sequence with the G groups of modulation symbols on transmission symbols;
the first modulation symbol is modulated ACK or NACK message or data information, and the signal is an uplink control signal.
2. The method of claim 1, wherein the M positions are either even sequence point positions of the first sequence or odd sequence point positions of the first sequence.
3. The method of claim 2, wherein the M positions are a subset of all even point positions of the first sequence.
4. The method of claim 2, wherein the M locations are a subset of all odd-numbered point locations of the first sequence.
5. The method according to claim 1, wherein the first sequence is obtained by phase rotation of the second sequence in different frequency domains, and/or the first sequence is obtained by cyclic shift of the second sequence in different time sequences; wherein the content of the first and second substances,
the amplitude of the second sequence is a non-zero constant, and the length of the second sequence is N.
6. The method of claim 5, wherein the second sequence is a Zadoff-Chu sequence or is transformed from a Zadoff-Chu sequence.
7. The method of claim 6, wherein the second sequence is obtained by truncation of a Zadoff-Chu sequence or cyclic extension of a Zadoff-Chu sequence.
8. The method of claim 5, wherein the second sequence is an optional sequence obtained by Quadrature Phase Shift Keying (QPSK) phase modulation.
9. The method of claim 5, wherein the first sequence is cyclically shifted by the second sequence with different timing sequencesWhen the first sequence is obtained, the first sequence is contained in a sequence set, and the sequence set contains K sequences obtained by cyclic shift of the second sequence through different time sequences; k is a positive integer, and
Figure FDA0003580103320000021
10. the method according to claim 9, wherein when N is an even number, the cyclic shift amounts of the second sequence in the sequence set are respectively equal to
Figure FDA0003580103320000022
The generated sequences constitute a subset of a set; alpha is alphakAn integer greater than or equal to zero.
11. The method according to claim 9, wherein when N is an odd number, the sequence sets are such that the second sequences undergo cyclic shift amounts of respectively
Figure FDA0003580103320000023
The generated sequences constitute a subset of a set; alpha is alphakAn integer greater than or equal to zero.
12. The method of claim 9, wherein when N is an even number, the K sequences satisfy at least one of the following conditions:
different sequences are mutually orthogonal;
sequences with the length of N/2 and formed by even-numbered positions of different sequences are mutually orthogonal;
sequences of length N/2 formed by odd bits of different sequences are orthogonal to each other.
13. The method of claim 6, wherein when the second sequence is a Zadoff-Chu sequence, N is 12, or 24, or 36.
14. The method of claim 8, wherein N is 12 or 24.
15. The method of claim 1, wherein when sending a 1-bit ACK or NACK message, the first sequence of M positions is modulated with a first modulation symbol, and the first modulation symbol is an ACK or NACK message modulated by Binary Phase Shift Keying (BPSK).
16. The method of claim 1, wherein when transmitting 2-bit ACK or NACK messages, modulating a first modulation symbol at each of M positions of the first sequence, wherein the first modulation symbol is a QPSK modulated ACK or NACK message.
17. The method of claim 1, wherein when transmitting a message greater than or equal to 2 bits, the M positions of the first sequence are divided into G groups, each group modulating the same modulation symbol.
18. The method of claim 17, wherein when transmitting a 2-bit message, the M positions of the first sequence are grouped into three groups, each group modulating the same modulation symbol.
19. The method of claim 18, wherein the three sets of modulation symbols are { s }G1,sG2,sG3In which s isG1For a first set of corresponding modulation symbols, sG2For modulation symbols, s, corresponding to the second set of positionsG3Modulation symbols corresponding to the third group of positions;
{sG1,sG2,sG3the value of {1,1,1}, { j, -1, -j }, { -1,1, -1}, { -j, -1, j }, or { s }G1,sG2,sG3The value is one of {1,1,1}, { -1, -1, -1}, { j, j, j }, { -j, -j, -j }, wherein j represents a unit imaginary number.
20. The method of claim 19, wherein N-12 and M-9 are defined as a first group of sequence points with indices {1,5,9} in the first sequence, a second group of sequence points with indices {2,6,10} in the first sequence, and a third group of sequence points with indices {3,7,11} in the first sequence.
21. The method of claim 5, wherein when transmitting a 1-bit message, two first sequences are determined, and the time domain cyclic shift amounts of the two first sequences are different by N/2.
22. The method of claim 5, wherein when transmitting a 2-bit message, four first sequences are determined, and the difference between the cyclic shift amounts in the time domain of any two of the four first sequences is an integer multiple of N/4.
23. The method according to claim 21 or 22, wherein the first sequence carries 1 first modulation symbol, or the first sequence carries 1G groups of modulation symbols.
24. The method of claim 1, wherein the first sequence is a sequence corresponding to the SR when a Scheduling Request (SR) and one of an ACK and NACK message are transmitted simultaneously.
25. The method of claim 1, wherein the sending the first sequence with the first modulation symbol or the first sequence with the G-group modulation on a transmission symbol comprises:
mapping the first sequence with the first modulation symbol or the G groups of modulation symbols on N continuous subcarriers of a frequency domain for transmission;
alternatively, the first and second electrodes may be,
and mapping the first sequence with the first modulation symbol or the G groups of modulation symbols on N non-continuous subcarriers with equal intervals in the frequency domain for transmission.
26. The method of claim 1, wherein a first sequence with the first modulation symbol is transmitted on each transmission symbol when the number of transmission symbols is at least two.
27. The method of claim 26, wherein the first sequence is different for each transmission symbol.
28. The method of claim 26, wherein frequency domain locations mapped by different transmission symbols are different.
29. The method of claim 1, wherein the corresponding first sequences are different for different transmitting ends, or the frequency domain positions to which the transmission symbols are mapped are different.
30. The method of claim 1, wherein when the first sequence with the first modulation symbol or with the G groups of modulation symbols is sent on a transmission symbol, the method further comprises:
performing cell level scrambling processing on the first sequence with the first modulation symbol or the G groups of modulation symbols;
accordingly, the scrambled first sequence with the first modulation symbol or with the G groups of modulation symbols is transmitted on the transmission symbols.
31. A method for receiving a signal, the method comprising:
receiving a first sequence with a first modulation symbol on a transmission symbol; the first sequence with the first modulation symbol is obtained by modulating the first modulation symbol at M positions of the first sequence with the length of N; n is a positive integer; demodulating by using sequence points at M positions of a first sequence with the first modulation symbol to obtain a first modulation symbol; the first modulation symbol represents a modulated signal; m is a positive integer less than N; alternatively, the first and second liquid crystal display panels may be,
receiving a first sequence with G groups of modulation symbols on transmission symbols; the first sequence with the G groups of modulation symbols is obtained by dividing M positions of the first sequence with the length of N into G groups and modulating the same modulation symbols in each group; n is a positive integer; g is an integer equal to or greater than 2, and G is equal to or less than N; the modulation symbols represent the modulated signals; demodulating by using the sequence points at M positions of the first sequence with the G groups of modulation symbols to obtain G groups of modulation symbols; m is a positive integer less than N; alternatively, the first and second electrodes may be,
receiving a first sequence with a first modulation symbol or with the G groups of modulation symbols on a transmission symbol; the first sequence with the first modulation symbols is obtained by modulating the first modulation symbols at M positions of the first sequence with the length of N or dividing the M positions into G groups, and modulating the same modulation symbols in each group; n is a positive integer; m is a positive integer less than N; g is an integer equal to or greater than 2, and G is equal to or less than N; performing non-coherent demodulation by using all sequence points of the first sequence with the corresponding modulation symbols to obtain the corresponding modulation symbols;
the first modulation symbol is modulated ACK or NACK message or data information, and the signal is an uplink control signal.
32. The method of claim 31, wherein the M positions are even sequence point positions of the first sequence or odd sequence point positions of the first sequence.
33. The method of claim 31, further comprising;
and performing channel estimation by using sequence points at positions except M positions in the first sequence with the first modulation symbol or the G groups of modulation symbols.
34. The method of claim 31, wherein the demodulating with the M-position sequence points of the first sequence with the first modulation symbol or with the G-group modulation symbol when simultaneously transmitting SR and one of ACK and NACK messages, resulting in a first modulation symbol comprises:
and demodulating by using the sequence points with M positions of the SR sequence with the first modulation symbol or the G groups of modulation symbols to obtain a first modulation symbol.
35. The method of claim 31, wherein receiving a first sequence with the first modulation symbol or with the G groups of modulation symbols over transmission symbols comprises:
receiving a first sequence with the first modulation symbol on N consecutive subcarriers of a frequency domain;
alternatively, the first and second liquid crystal display panels may be,
receiving a first sequence with the first modulation symbol on N non-consecutive subcarriers equally spaced in a frequency domain.
36. The method of claim 31, wherein the corresponding first sequences are different for different transmitting ends, or wherein frequency domain positions to which transmission symbols are mapped are different.
37. The method of claim 35, further comprising:
and performing cell level descrambling on the first sequence with the first modulation symbol or the G groups of modulation symbols.
38. A signal transmission apparatus, characterized in that the apparatus comprises:
an obtaining unit, configured to obtain a first sequence with a length N; n is a positive integer;
the modulation unit is used for modulating first modulation symbols at the M positions of the first sequence, or dividing the M positions of the first sequence into G groups, and modulating the same modulation symbols in each group; the first modulation symbol represents a modulated signal; the modulation symbols represent the modulated signals; m is a positive integer less than N; g is an integer equal to or greater than 2, and G is equal to or less than N;
a transmitting unit, configured to transmit a first sequence with the first modulation symbol or with the G groups of modulation symbols over a transmission symbol;
the first modulation symbol is modulated ACK or NACK message or data information, and the signal is an uplink control signal.
39. The apparatus according to claim 38, wherein the obtaining unit is specifically configured to:
when an SR and one of ACK and NACK messages are transmitted simultaneously, taking a sequence corresponding to the SR as the first sequence.
40. The apparatus according to claim 38, wherein the sending unit is specifically configured to:
mapping the first sequence with the first modulation symbol or the G groups of modulation symbols on N continuous subcarriers of a frequency domain for transmission;
alternatively, the first and second electrodes may be,
and mapping the first sequence with the first modulation symbol or the G groups of modulation symbols on N non-continuous subcarriers with equal intervals in the frequency domain for transmission.
41. The apparatus of claim 38, further comprising:
a scrambling unit, configured to perform cell-level scrambling processing on the first sequence with the first modulation symbol or with the G groups of modulation symbols;
accordingly, the sending unit is configured to send the scrambled first sequence with the first modulation symbol or with the G groups of modulation symbols over the transmission symbols.
42. A signal receiving apparatus, characterized in that the apparatus comprises:
a receiving unit for receiving a first sequence with a first modulation symbol on a transmission symbol; the first sequence with the first modulation symbol is obtained by modulating the first modulation symbol at M positions of the first sequence with the length of N; n is a positive integer;
a demodulation unit, configured to demodulate by using sequence points at M positions of a first sequence with the first modulation symbol to obtain a first modulation symbol; the first modulation symbol represents a modulated signal; m is a positive integer less than N; alternatively, the first and second electrodes may be,
a receiving unit for receiving a first sequence with G groups of modulation symbols on transmission symbols; the first sequence with the G groups of modulation symbols is obtained by dividing M positions of the first sequence with the length of N into G groups and modulating the same modulation symbols in each group; n is a positive integer; g is an integer equal to or greater than 2, and G is equal to or less than N; the modulation symbols represent the modulated signals;
the demodulation unit is used for demodulating by using the sequence points with M positions of the first sequence of the G groups of modulation symbols to obtain G groups of modulation symbols; m is a positive integer less than N; alternatively, the first and second electrodes may be,
a receiving unit, configured to receive a first sequence with a first modulation symbol or with G groups of modulation symbols on a transmission symbol; the first sequence with the first modulation symbols is obtained by modulating the first modulation symbols at M positions of the first sequence with the length of N or dividing the M positions into G groups, and modulating the same modulation symbols in each group; n is a positive integer; m is a positive integer less than N; g is an integer equal to or greater than 2, and G is equal to or less than N;
a demodulation unit, configured to perform incoherent demodulation using all sequence points of the first sequence with corresponding modulation symbols to obtain corresponding modulation symbols;
the first modulation symbol is modulated ACK or NACK message or data information, and the signal is an uplink control signal.
43. The apparatus of claim 42, further comprising:
and the channel estimation unit is used for carrying out channel estimation by using sequence points at positions except M positions in the first sequence with the first modulation symbols or the first sequence with the G groups of modulation symbols.
44. The apparatus according to claim 42, wherein the demodulation unit is specifically configured to:
and when the SR and one of the ACK and NACK messages are sent simultaneously, demodulating by using the sequence points with the first modulation symbol or M positions of the SR sequence with the G groups of modulation symbols to obtain a first modulation symbol.
45. The apparatus according to claim 42, wherein the receiving unit is specifically configured to:
receiving a first sequence with the first modulation symbol or with the G groups of modulation symbols on N consecutive subcarriers of a frequency domain;
alternatively, the first and second electrodes may be,
receiving the first sequence with the first modulation symbol or the G groups of modulation symbols on N non-consecutive subcarriers equally spaced in the frequency domain.
46. The apparatus of claim 42, further comprising:
and the descrambling unit is used for performing cell level descrambling on the first sequence with the first modulation symbol or the G groups of modulation symbols.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2293485A1 (en) * 2009-09-03 2011-03-09 Panasonic Corporation Feedback scheme for providing feedback on plural transmissions
CN102835086A (en) * 2010-04-05 2012-12-19 Lg电子株式会社 Method and apparatus for transmitting control information in a wireless communication system
CN103828318A (en) * 2011-09-23 2014-05-28 Lg电子株式会社 Method and apparatus for controlling uplink control information in wireless communication system
CN104144140A (en) * 2013-05-09 2014-11-12 华为技术有限公司 Method for reducing peak-to-average ratio in OFDM system and access device
CN104158620A (en) * 2013-05-13 2014-11-19 中兴通讯股份有限公司 Transmission method, transmitter and receiver of control information
CN104320367A (en) * 2014-10-09 2015-01-28 厦门大学 Training sequence structure applied to OFDM (Orthogonal Frequency Division Multiplexing) burst communication

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2293485A1 (en) * 2009-09-03 2011-03-09 Panasonic Corporation Feedback scheme for providing feedback on plural transmissions
CN102835086A (en) * 2010-04-05 2012-12-19 Lg电子株式会社 Method and apparatus for transmitting control information in a wireless communication system
CN103828318A (en) * 2011-09-23 2014-05-28 Lg电子株式会社 Method and apparatus for controlling uplink control information in wireless communication system
CN104144140A (en) * 2013-05-09 2014-11-12 华为技术有限公司 Method for reducing peak-to-average ratio in OFDM system and access device
CN104158620A (en) * 2013-05-13 2014-11-19 中兴通讯股份有限公司 Transmission method, transmitter and receiver of control information
CN104320367A (en) * 2014-10-09 2015-01-28 厦门大学 Training sequence structure applied to OFDM (Orthogonal Frequency Division Multiplexing) burst communication

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