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WO2013005920A1 - Procédé de transmission de signal et procédé de traitement de signal, terminal correspondant, et station de base correspondante, dans un système de communication sans fil - Google Patents

Procédé de transmission de signal et procédé de traitement de signal, terminal correspondant, et station de base correspondante, dans un système de communication sans fil Download PDF

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Publication number
WO2013005920A1
WO2013005920A1 PCT/KR2012/003598 KR2012003598W WO2013005920A1 WO 2013005920 A1 WO2013005920 A1 WO 2013005920A1 KR 2012003598 W KR2012003598 W KR 2012003598W WO 2013005920 A1 WO2013005920 A1 WO 2013005920A1
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Prior art keywords
orthogonal
sequence
orthogonal sequence
slot
spreading
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English (en)
Korean (ko)
Inventor
윤성준
박동현
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Pantech Co Ltd
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Pantech Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1692—Physical properties of the supervisory signal, e.g. acknowledgement by energy bursts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • 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
    • 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
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code
    • H04L5/0017—Time-frequency-code in which a distinct code is applied, as a temporal sequence, to each frequency
    • 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
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH

Definitions

  • the present invention relates to a signal transmission method, a signal processing method, a terminal thereof, and a base station in a wireless communication system.
  • the present invention can reduce the control signal overhead and time delay between the base station and the terminal through the simultaneous transmission of the control signal in a wireless communication system.
  • the present invention can lead to a small amount of downlink data retransmission can significantly improve the downlink throughput (Throughput).
  • the present invention provides a method for generating and transmitting a control signal in a wireless communication system, the method comprising: generating a complex symbol by modulating one or more HARQ-ACK / NACK bits; Generating a block of complex symbols by multiplying the generated complex symbols by a cyclically delayed sequence of length 12; Scrambling the generated blocks of complex symbols into a scrambling sequence, spreading them into an orthogonal sequence, and mapping them to time-frequency resources; And generating and transmitting a control signal using the mapped time-frequency resource, wherein for the two slots in one subframe, the orthogonal sequence used for spreading in the first slot includes: a first signal; One of the orthogonal sequences belonging to the orthogonal sequence group, wherein the orthogonal sequence used for spreading in the second slot is one of the orthogonal sequences belonging to the first orthogonal sequence group depending on the presence or absence of a scheduling request (SR); or And one of the orthogonal sequences belonging to the second orthogonal sequence group.
  • SR scheduling request
  • the present invention provides a method for generating and transmitting a control signal by a terminal in a wireless communication system, the method comprising: generating one complex symbol by modulating one or more HARQ-ACK / NACK bits; Generating a block of complex symbols by multiplying the generated complex symbols by a cyclically delayed sequence of length 12; Scrambling the generated blocks of complex symbols into a scrambling sequence, spreading them into an orthogonal sequence, and mapping them to time-frequency resources; And generating and transmitting a control signal using the mapped time-frequency resource, wherein for the two slots in each subframe, the orthogonal sequence used for spreading in each slot is a scheduling request.
  • SR provides a method characterized in that one of the orthogonal sequences belonging to the first orthogonal sequence group or one of the orthogonal sequences belonging to the second orthogonal sequence group.
  • the present invention provides a method for a base station to receive a control signal from a terminal in a wireless communication system, the method comprising the steps of: transmitting a PDSCH assigned to a specific terminal; And generating a complex symbol by modulating one or more HARQ-ACK / NACK bits for the PDSCH transmission by multiplying the generated complex symbol by a sequence having a cyclic delay length of 12 and generating a block of complex symbols. Scrambling the generated blocks of complex symbols into a scrambling sequence, spreading them into an orthogonal sequence, mapping them to time-frequency resources, and generating and transmitting a signal from the mapped time-frequency resources, the specific terminal.
  • the orthogonal sequence used for spreading in the first slot is one of the orthogonal sequences belonging to the first orthogonal sequence group
  • the second slot In the orthogonal sequence used for spreading in accordance with the presence or absence of a scheduling request (SR) And one of orthogonal sequences belonging to the first orthogonal sequence group or one of orthogonal sequences belonging to the second orthogonal sequence group.
  • SR scheduling request
  • the present invention provides a method for a base station to receive a control signal from a terminal in a wireless communication system, the method comprising the steps of: transmitting a PDSCH assigned to a specific terminal; And generating a complex symbol by modulating one or more HARQ-ACK / NACK bits, and generating a block of complex symbols by multiplying the generated complex symbol by a cyclic delayed sequence of 12 and generating the complex symbol. Scrambling a block of data into a scrambling sequence, spreading the data into a time-frequency resource by spreading the data in an orthogonal sequence, and receiving a control signal generated using the mapped time-frequency resource from the specific terminal.
  • the orthogonal sequence used for spreading in each slot is one of orthogonal sequences belonging to the first orthogonal sequence group depending on the presence or absence of a scheduling request SR or a second. It provides a method characterized in that one of the orthogonal sequences belonging to the orthogonal sequence group. .
  • the present invention is a terminal for generating and transmitting a control signal in a wireless communication system
  • the modulation unit for generating a complex symbol by modulating one or more HARQ-ACK / NACK bits; And generating a block of complex symbols by multiplying the generated complex symbol by a cyclically delayed sequence of 12, scrambling the generated block of complex symbols into a scrambling sequence, and spreading the complex symbol into an orthogonal sequence to obtain a time-frequency resource.
  • a resource allocation unit for generating and transmitting a control signal by using the mapped time-frequency resource, wherein two orthogonal slots are used for spreading in a first slot for two slots in each subframe.
  • the sequence is one of orthogonal sequences belonging to the first orthogonal sequence group, and the orthogonal sequence used for spreading in the second slot is orthogonal sequences belonging to the first orthogonal sequence group depending on the presence or absence of a scheduling request SR.
  • One of orthogonal sequences belonging to the second orthogonal sequence group It provides a terminal according to claim.
  • the present invention is a terminal for generating and transmitting a control signal in a wireless communication system, the modulation unit for generating one complex symbol by modulating one or more HARQ-ACK / NACK bits; And generating a block of complex symbols by multiplying the generated complex symbol by a cyclically delayed sequence of 12, scrambling the generated block of complex symbols into a scrambling sequence, and spreading it into an orthogonal sequence to map it to a time-frequency resource.
  • SR scheduling request
  • the present invention is a base station for receiving a control signal from a terminal in a wireless communication system, a transmission unit for transmitting a PDSCH assigned to a specific terminal;
  • the specific terminal generates complex symbols by modulating one or more HARQ-ACK / NACK bits for the PDSCH transmission, multiplies the generated complex symbols by a cyclic delayed sequence of length 12 to generate a block of complex symbols.
  • a receiver for scrambling the generated blocks of complex symbols into a scrambling sequence, spreading them into an orthogonal sequence, mapping them to time-frequency resources, and receiving a control signal generated using the mapped time-frequency resources from the specific terminal.
  • the orthogonal sequence used for spreading in the first slot is selected from among orthogonal sequences belonging to the first orthogonal sequence group.
  • One orthogonal sequence used for spreading in a second slot is one of orthogonal sequences belonging to a first orthogonal sequence group or an orthogonal sequence belonging to a second orthogonal sequence group depending on whether a scheduling request (SR) exists or not. It provides a base station characterized in that one of the.
  • the present invention is a base station for receiving a control signal from a terminal in a wireless communication system, a transmission unit for transmitting a PDSCH assigned to a specific terminal;
  • the specific terminal modulates one or more HARQ-ACK / NACK bits to generate one complex symbol, and multiplies the generated complex symbol by a cyclically delayed sequence of length 12 to generate a block of complex symbols and to generate the complex symbols.
  • a receiving unit which scrambles a block into a scrambling sequence, spreads it into an orthogonal sequence, maps it to a time-frequency resource, and receives a control signal generated from the specific terminal by using the mapped time-frequency resource; And a controller for controlling the transmitter and the receiver, wherein, for two slots in each subframe, the orthogonal sequence used for spreading in each slot is determined according to the presence or absence of a scheduling request (SR).
  • SR scheduling request
  • FIG. 1 is a block diagram of an uplink control channel according to an embodiment when having a general CP.
  • FIG. 2 is a block diagram of an uplink control channel according to another embodiment when having an extended CP.
  • FIG. 3 is a configuration diagram of an uplink control channel according to another embodiment when having a general CP.
  • FIG. 4 is a flowchart of signals of a base station and a terminal according to another embodiment.
  • FIG. 5 is a configuration diagram of a base station according to another embodiment.
  • 1 is a block diagram of an uplink control channel according to an embodiment when having a general CP.
  • 2 is a block diagram of an uplink control channel according to another embodiment when having an extended CP.
  • the terminal 100 in case of having a general CP, the terminal 100 includes a channel coder 110, a scrambler 120, a modulator 130, and a resource allocator 140.
  • the terminal 200 in case of having an extended CP, the terminal 200 includes a channel coder 110, a scrambler 120, a modulator 130, and a resource allocator 240.
  • the uplink control channel may not include the channel coding unit 110 and the scrambler 120 according to a configuration format.
  • one subframe may include two slots.
  • One slot may include a plurality of OFDM symbols in the time domain and at least one subcarrier in the frequency domain. For example, in the case of having a normal cyclic prefix (CP), one slot includes 7 OFDM symbols in the subframe shown in FIG. 1. In case of having an extended cyclic prefix (CP), one slot includes 6 OFDM symbols in the subframe illustrated in FIG. 2.
  • a channel for transmitting control information is called a control channel.
  • a physical layer channel for transmitting control information from a base station to a terminal is called a downlink control channel (PDCCH), and a physical layer channel for transmitting control information from a terminal to a base station is a physical uplink control channel. PUCCH).
  • Control information transmitted through the uplink control channel is for downlink data transmission.
  • Hybrid Automatic Repeat Request (HARQ) -positive-acknowledgement (ACK) / Negative-acknowledgement (ACK) signals which may be referred to as channel quality indicators (CQIs) or channel statement information (CSI) reports indicating downlink channel quality.
  • CQIs channel quality indicators
  • CSI channel statement information
  • the control channel supports various formats as shown in Table 1 according to the type of control information.
  • Table 1 PUCCH format Uplink Control Information One Scheduling Request (SR) 1a 1 bit HARQ-ACK / NACK, etc. 1b 2-bit HARQ-ACK / NACK, etc. 2 CSI report (20 coded bits) CSI report and HARQ-ACK / NACK (20 coded bits) for extended CP 2a CSI report and 1 bit HARQ-ACK / NACK (20 + 1 coded bits) for general CP 2b CSI report and 2-bit HARQ-ACK / NACK (20 + 2 coded bits) for general CP 3 HARQ-ACK / NACK, or HARQ-ACK / NACK + SR (48 coded bits)
  • SR scheduling request
  • the positive SR and the negative SR may be transmitted one of the two by changing the information value,
  • PUCCH formats 1a / 1b and the like may be used.
  • ACK / NACK is represented by d (0), which is a BPSK symbol for two cases represented by 1 bit, and transmitted in PUCCH format 1a, and by d (0), which is a QPSK symbol for 4 cases represented by 2 bits. It can transmit in PUCCH format 1b.
  • the PUCCH format 1b not only 2 bits but also up to 4 bits of ACK / NACK may be transmitted at one time. However, when 2 bits are exceeded, the QPSK symbol represented by the above-mentioned 2 bits is finally selected through channel selection.
  • d (0) is also generated and transmitted in PUCCH format 1b.
  • a time division duplex needs to simultaneously transmit a scheduling request and ACK / NACK to save PUCCH resources for scheduling request (SR) transmission and to increase downlink throughput.
  • uplink control information May be transmitted through an uplink resource allocated by the resource allocator 140 on the uplink control channel.
  • the allocated uplink resource may be located at the far edge of the total available cell bandwidth. For example, this resource may be located at the bottom edge of the first slot of a subframe. Resources of the same size may be located at the upper edge in the second slot of the same subframe. Conversely, this resource may be located at the top edge of the first slot of the subframe and the same size of resource may be located at the bottom edge of the second slot of the same subframe. If more resources are needed for transmission of control information, additional resources may be further allocated for control information into one of the previously allocated resources.
  • the uplink control information Is channel coded by the channel coding unit 110 ( Scrambling by the scrambler 120, modulated by the modulator 130, and complex-valued symbols.
  • the channel coder 110 and the scrambler 120 may not be included in the apparatus of FIGS. 1 and 2 according to a configuration format of an uplink control channel (PUCCH) for transmitting the uplink control information.
  • PUCCH uplink control channel
  • a bit value is set to 1 for ACK, which is a positive ACK, and 0 for NACK, which is a negative ACK.
  • From HARQ-ACK / NACK 1 bit ( b 0 ) or a total of two HARQ-ACK / NACK 2 bits ( b 0 , b 1 ) can be directly configured by one bit each of two codewords.
  • the complex symbol d (0) when used in the PUCCH format 1 / 1a / 1b of Table 1, in the PUCCH transmission from the terminal 100, one code is shown in Table 2 in HARQ-ACK / NACK transmission. Modulate one HARQ-ACK / NACK bit into BPSK for a word to transmit complex symbol d (0) in PUCCH format 1a, or two HARQ-ACK / NACK bits into QPSK for two codewords By modulating, the complex symbol d (0) may be transmitted in the PUCCH format 1b.
  • the complex symbol d (0) is a cyclic delayed length 12 sequence for each of the P antenna ports used for PUCCH transmission as shown in Equation 1 below. Multiplied with. Where the sequence Is the length And As a cyclic shifted sequence, a constant amplitude zero auto-correlation (CAZAC) sequence or a similar sequence can be used.
  • CAZAC constant amplitude zero auto-correlation
  • sequence Base sequence based on a CAZAC sequence To As a sequence of cyclic shifts It can be expressed as At this time, cyclic shift in Is an antenna port, n s is a slot number, l is a symbol number, which means that a cyclic shift can have a different value for each slot and symbol for each antenna port.
  • m denotes an index of a symbol for PUCCH format used in the one slot, for example, PUCCH format 1 / 1a / 1b transmission.
  • the PUCCH format will be described as an exemplary PUCCH format 1 / 1a / 1b, but is not limited thereto.
  • the total number of symbols for PUCCH format 1 / 1a / 1b transmission in one slot is the number of spreading factors (SF) of the orthogonal sequence. to be.
  • the first slot and the second slot are used. May be all four.
  • Is 4 and the second slot May be three.
  • n denotes an index of a subcarrier for PUCCH format 1 / 1a / 1b transmission in one resource block (RB), and indicates PUCCH format 1 / 1a / 1b transmission in one resource block.
  • a sequence S (n s ) for scrambling may be defined as follows.
  • Orthogonal sequence index in PUCCH formats 1a / 1b in general cases Is defined as in Equation 4, and the orthogonal sequence index Orthogonal sequences according to each Is the length as shown in Table 3.
  • N ⁇ are set from the upper stage or on the system and used for various parameter values used in the PUCCH format 1 / 1a / 1b.
  • the orthogonal sequence index Orthogonal sequences according to each Is the length as shown in Table 4. Orthogonal sequence of 3 Can be used.
  • an orthogonal sequence for spreading for each symbol allocated for PUCCH transmission of the first slot and the second slot Sequence index May be selected as one of 0, 1, and 2 of Table 3 or Table 4 based on the value obtained through Equation 4.
  • sequence Sequence index Is equally defined as Equation 4, and the sequence index Orthogonal Sequences According to Each Value of Equally the length as seen in Table 3
  • an orthogonal sequence for spreading for each symbol allocated for PUCCH transmission in the second slot Sequence index Is an orthogonal sequence equal to the first slot if the negative SR, i.e.
  • m ⁇ 0 or 1
  • d (0) SR is 0 or 1
  • d (0) SR 0, a negative SR, that is, a scheduling request (SR) is absent
  • d (0) SR 1
  • the sequence index in the second slot The value of is equal to the first slot and has the same value as one of 0, 1 and 2 in Table 3 according to Equation 5 (the range (one of 0, 1, 2) is the same but need not be the same).
  • the sequence index in the second slot Unlike in the first slot, the value of is illustrated as having one of 3, 4, and 5 in Table 5 by Equation 5, but on the contrary, in the case of a positive SR, the sequence index in the second slot is Equation 6 is equal to the first slot and has the same value as one of 0, 1 and 2 in Table 3 (Equation 6 or 7) according to Equation 6 or Equation 7 Need not)), if it is a negative SR, the sequence index in the second slot Unlike the first slot, may have a value of 3, 4, or 5 in Table 5 by Equation 6 or Equation 7.
  • Table 3 is replaced by Table 4 in the first slot, compared to that described in the general case above.
  • Table 5 is replaced by Table 6 below.
  • the uplink control information is a bit value of 1 for ACK, which is positive ACK for PUCCH format 1 / 1a / 1b, and 0 for NACK, which is negative ACK.
  • one HARQ-ACK / NACK 1 bit ( b 0 ) or one total of two HARQ-ACK / NACK bits ( b 0 , b 1 ) can be directly configured from two codewords. Can be.
  • the HARQ-ACK / NACK bit (s) are BPSK or QPSK modulated by the modulator 130 and converted into a complex-valued symbol d (0).
  • the complex symbol d (0) by the resource allocator 140 is a cyclic delayed length 12 sequence for each of the P antenna ports used for PUCCH transmission as shown in Equation 1 below. Multiplied with.
  • a block of complex symbols spread by this orthogonal sequence is allocated to four OFDM symbols out of seven OFDM symbols in the case of normal CP and uplink channel estimation to the remaining three OFDM symbols.
  • Reference signals such as a demodulation reference signal (DM-RS)
  • DM-RS demodulation reference signal
  • an extended CP four OFDM symbols among six OFDM symbols are allocated, and the remaining two OFDM symbols are allocated reference signals such as DM-RS for uplink channel estimation. Can be.
  • the maximum is within two resource blocks (RBs) of one subframe consisting of two slots.
  • RBs resource blocks
  • c is an orthogonal sequence
  • the value is due to the number of times, which is 3 for a typical CP and 2 for an extended CP. This means that at most three or two orthogonal sequences in time have orthogonality.
  • CAZAC constant amplitude zero auto-correlation
  • a total of 2 (for scheduling request) ⁇ 4 (PUCCH format 1b ACK /) is required to simultaneously transmit a total of two cases for a scheduling request and four cases (or two cases) for ACK / NACK.
  • an orthogonal sequence You can use the method of doubling the value of c due to the number of. That is, to transmit a scheduling request (SR) with ACK / NACK in PUCCH format 1a / 1b, orthogonal sequence The number of must be doubled. For this purpose, in general, length as shown in Table 7 Orthogonal Sequence of Can be used. In case of transmitting only existing ANK / NACK, four lengths are shown in Table 3. Orthogonal Sequence of If you used three of the orthogonal sequences To increase the number of times to 6, double the lengths as shown in Table 7. Orthogonal Sequence of Six of them are used.
  • Orthogonal sequence also for sending a scheduling request (SR) The number of times should be doubled. To do this, in case of transmitting only conventional ACK / NACK, Orthogonal Sequence of If you used, orthogonal sequence To double the number of lengths as shown in Table 8 below Orthogonal Sequence of Can be used.
  • an orthogonal sequence for spreading for each symbol allocated for PUCCH transmission of the first slot to transmit a scheduling request with ACK / NACK in PUCCH formats 1a / 1b.
  • Sequence index choose a value from 0, 1, or 2 in Table 3.
  • an orthogonal sequence for spreading for each symbol allocated for PUCCH transmission of the second slot Sequence index Is an orthogonal sequence equal to the first slot if the negative SR, i.e. the scheduling request (SR) is absent, Sequence index Can be selected from 0, 1, 2 in Table 3.
  • SR scheduling request
  • Sequence index The value can be selected from 3, 4, or 5 in Table 5. (As mentioned above, in the case of a positive SR conversely in the second slot, an orthogonal sequence equals to the first slot. Sequence index Is selected as one of 0, 1, and 2 in Table 3, and for a negative SR, the first slot is different. Sequence index You can select the value from 3, 4, or 5 in Table 5.)
  • one of the orthogonal sequences of length 4 in Table 3 is used for spreading in the first slot, and one of the orthogonal sequences of length 4 in Table 3 is used in the second slot, depending on the presence or absence of the SR.
  • One of the orthogonal sequences of length 4 in Table 5 is used.
  • it can be expressed as using six orthogonal sequences of length 8 as shown in Table 9, which is defined to double the aforementioned c value. 6 of 8 orthogonal sequences of 8 lengths in Table 7.
  • ACK / NACK in a shortened PUCCH format 1a / 1b that does not allocate a PUCCH to the last symbol of the second slot of a subframe to allocate an uplink reference signal such as a sounding reference signal (SRS) as described above.
  • Orthogonal Sequence for Spreading for Each Symbol Assigned for PUCCH Transmission of the First Slot to Send a Scheduling Request Sequence index Choose a value from 0, 1, or 2 in Table 4.
  • an orthogonal sequence for spreading for each symbol allocated for PUCCH transmission of the second slot Sequence index Is an orthogonal sequence equal to the first slot if the negative SR, i.e. the scheduling request (SR) is absent, Sequence index Can be selected from 0, 1, and 2 in Table 4.
  • Sequence index can be selected from 3, 4, or 5 in Table 6. (As mentioned above, in the case of positive SRs inversely from the second slot, an orthogonal sequence equals to the first slot. Sequence index Is selected from 0, 1, or 2 in Table 4, and for a negative SR, the first slot is different. Sequence index You can choose the value from 3, 4, or 5 in Table 6.)
  • one of the orthogonal sequences of length 3 in Table 4 is used for spreading in the first slot, and one of the orthogonal sequences of length 3 in Table 4 is used in the second slot, depending on the presence or absence of the SR.
  • One of the orthogonal sequences of length 3 in Table 6 is used.
  • Table 10 In terms of the entire subframe unit including the first slot and the second slot, it can be expressed by using six orthogonal sequences of length 6 as shown in Table 10, which is defined to double the c value mentioned above.
  • Table 6 corresponds to the orthogonal sequence of 6 lengths.
  • the first slot of Table 9 (including Tables 3 and 5) or Table 10 (including Tables 4 and 6) is used for spreading.
  • Orthogonal Sequence Orthogonal Sequence for Spreading in Slots and Second Slots May not be orthogonal to each other.
  • orthogonality is maintained when the orthogonal sequence for spreading in the second slot is also the other value in Table 3.
  • orthogonality is not maintained when the orthogonal sequence for spreading in the second slot is one of the three values in Table 5.
  • orthogonal sequences having a sequence index value of 3 differ from each other by as much as 180 degrees with respect to each other. That is, multiplying sequence values of orthogonal sequences having sequence index values of 0, 1, and 2 by -1 (180 degree phase shift) results in orthogonal sequences having sequence indexes of 3, 4, and 5, respectively.
  • an orthogonal sequence [-1 +1 -1 +1] with a sequence index value of 4 is an orthogonal sequence with a sequence index value of 1 [+1 -1 +1- 1] is multiplied by ⁇ 1.
  • orthogonal sequences in one subframe including the first and second slots (orthogonal sequences of length 8 as shown in Table 9 or as shown in Table 10) remain orthogonal to one another. Therefore, it is possible to maintain orthogonality as in the case of sending only ACK / NACK.
  • the base station receiving the PUCCH receives the sequence index of the second slot of the corresponding PUCCH format. Received only ACK / NACK depending on whether the value is 0-2 due to Table 3 (or Table 4) as shown in Table 9 (or Table 10) or 3 to 5 as drafted in Table 5 (or Table 6). Otherwise, it may be determined whether the scheduling request is received together with the ACK / NACK.
  • orthogonal sequence as shown in Fig. 1 and 2
  • first slot Is obtained from an orthogonal sequence having a sequence index of 0, 1, or 2 in Table 3 (or Table 4)
  • each sequence value of the orthogonal sequence in the second slot Is obtained from an orthogonal sequence having a sequence index of 0, 1, or 2 in Table 3 (or Table 4) depending on the presence or absence of an SR, or from an orthogonal sequence having a sequence index of 3, 4, or 5 in Table 5 (or Table 6). Is saved.
  • FIG. 3 is a configuration diagram of an uplink control channel according to another embodiment when having a normal CP.
  • FIG. 3 illustrates only a case of having a normal CP, it may be applied to a case of having an extended CP as shown in FIG. 2.
  • the terminal 300 includes a channel coder 110, a scrambler 120, a modulator 130, and a resource allocator 340.
  • the uplink control channel may not include the channel coding unit 110 and the scrambler 120 according to the configuration format of the PUCCH, as mentioned in the foregoing description of FIGS. 1 and 2.
  • the uplink control information is modulated into a complex-valued symbol d (0) by the modulator 130 in the same manner as described above with reference to FIGS. 1 and 2.
  • the complex symbol d (0) by the resource allocating unit 340 is a cyclic delay for each of the P antenna ports used for PUCCH transmission as shown in Equation 1 as described above with reference to FIGS. 1 and 2. -shifted 12-length sequence Multiplied with.
  • Equation 8 or 9 compared with Equation 2 or The same is true except that is further attached.
  • Each parameter value in Equation 8 is the same as described in Equations 2 to 5.
  • the d (0) SR is a complex-valued symbol for transmitting a scheduling request.
  • d (0) SR 1 when a scheduling request exists, that is, a positive SR.
  • d (0) SR 0 is set.
  • Equation 8 (or Equation 9) (or ), In the first slot, (or ) Has a value of 1 unconditionally, and has a value of 1 or -1 in the second slot depending on the existence of an SR.
  • here (or Or) is a 1 orthogonal sequence Corresponds to when the sequence index value of is one of 0, 1, 2 in Table 3 or Table 4, (or Orthogonal sequence if) has a value of -1. It corresponds to when the sequence index value of is one of 3, 4, 5 in Table 5 or Table 6. Because, as described above, multiply each sequence value of an orthogonal sequence (orthogonal sequence of Table 3 or Table 4) having sequence index values of 0, 1, and 2 by -1 (180 degree phase shift) to obtain a sequence index value.
  • Equation 8 on (or Multiplying by -1 through () is a quadrature sequence Sequence index It has the same effect as the value increases by 3.
  • Equation 5 the sequence index obtained through Equation 5 (or Equation 6 and Equation 7).
  • the value is one of 0, 1, or 2 corresponding to Table 3 (or Table 4) in the first slot, and 0, 1, or 2 corresponding to Table 3 (or Table 4) in the second slot, depending on the presence of SR.
  • Equation 4 a sequence index obtained through Equation 4 The value is one of 0, 1, or 2, corresponding to 3 (or Table 4) in the first slot, and one of 0, 1, or 2 corresponding to 3 (or Table 4) in the second slot.
  • orthogonal sequence as shown in Figure 3 For each orthogonal sequence in the first slot Is obtained from an orthogonal sequence having a sequence index of 0, 1, or 2 in Table 3 (or Table 4), and each sequence value of the orthogonal sequence in the second slot Again from an orthogonal sequence whose sequence index in Table 3 (or Table 4) is 0, 1, or 2. In the second slot, however, the value of 1 or -1 is multiplied by the presence of SR.
  • Sequence index Selects one of a specific orthogonal sequence group (for example, an orthogonal sequence corresponding to sequence indexes 0, 1, and 2 of Table 3 (or Table 4)) as in transmitting only ACK / NACK, and PUCCH in the second slot.
  • SR scheduling request
  • ACK / NACK in PUCCH format 1a / 1b
  • Sequence index Selects one of a specific orthogonal sequence group (for example, an orthogonal sequence corresponding to sequence indexes 0, 1, and 2 of Table 3 (or Table 4)) as in transmitting only ACK / NACK, and PUCCH in the second slot.
  • Orthogonal Sequence for Spreading for Each Symbol Assigned for Transmission Sequence index Is selected from the same orthogonal sequence group (eg, an orthogonal sequence corresponding to sequence indexes 0, 1 and 2 of Table 3 (or Table 4)) in the first slot depending on the presence or absence of the SR, or the first slot. It is described by selecting one from another orthogonal sequence group (eg, an orthogonal sequence corresponding to sequence indexes 3, 4, and 5 of Table 5 (or Table 6)).
  • the above-described blocks of the complex symbols are scrambled into a scrambling sequence, spread into an orthogonal sequence, and mapped to a time-frequency resource, and then mapped.
  • the user terminal generates a signal from the received time-frequency resource and transmits it to the base station (eNodeB).
  • the first slot and the second in order to transmit only the ACK / NACK in the PUCCH format 1a / 1b, or to send a scheduling request (SR) with the ACK / NACK in the general case Orthogonal Sequence for Spreading for Each Symbol Assigned for PUCCH Transmission in Slot And sequence index can be configured as shown in Table 11 below.
  • SR scheduling request
  • orthogonal sequences corresponding to a sequence index value of 0 or 2 are called first orthogonal sequence groups, and orthogonal sequences corresponding to a sequence index value of 1 or 3 are referred to as a second orthogonal sequence group
  • Orthogonal sequence for spreading for each symbol allocated for PUCCH transmission in the first slot and the second slot in PUCCH format 1a / 1b when transmitting only ACK / NACK Sequence index In Table 11, one of the orthogonal sequences belonging to the first orthogonal sequence group (sequence index 0 or 2) may be selected.
  • Sequence index The value may be selected from among orthogonal sequences belonging to the first orthogonal sequence group (sequence index is 0 or 2) or the second sequence group (sequence index is 1 or 3) of Table 11, depending on the presence or absence of the SR. That is, when a scheduling request is absent, i.e., a negative SR, one of the orthogonal sequences belonging to the first orthogonal sequence group, when the scheduling request is present, i.e.
  • one of orthogonal sequences belonging to the second orthogonal sequence group may be selected.
  • one of orthogonal sequences belonging to the first orthogonal sequence group may be selected in the case of a positive SR
  • one of orthogonal sequences belonging to the second orthogonal sequence group may be selected in the case of a negative SR.
  • the base station receiving the PUCCH has a sequence index for the first slot and the second slot of the corresponding PUCCH format.
  • Orthogonal sequences whose values correspond to 0 or 2 in Table 11.
  • Spread to or sequence index Orthogonal sequences whose values correspond to 1 or 3 in Table 11. It can be determined whether only ACK / NACK was received (in this case, SR is negative SR) or scheduling request was received with ACK / NACK (SR is positive SR in this case). .
  • FIG. 4 is a flowchart of signals of a base station and a terminal according to another embodiment.
  • a wireless communication system widely deployed to provide various communication services such as voice and packet data includes a base station 410 (base station, BS, or eNodeB) and a user terminal (420). Include.
  • a base station 410 or a cell generally refers to a station communicating with the user terminal 420, and includes a Node-B, an evolved Node-B, and a Base Transceiver System (BTS). May be called in other terms such as an access point, a relay node, and the like.
  • BTS Base Transceiver System
  • the base station 410 or the cell should be interpreted in a comprehensive sense indicating some areas covered by the base station controller (BSC) in the CDMA, the NodeB of the WCDMA, and the like. It is meant to cover various coverage areas such as microcell, picocell, femtocell and relay node communication range.
  • BSC base station controller
  • the terminal 420 is a comprehensive concept that means a user terminal in wireless communication.
  • UE user equipment
  • MS mobile station
  • UT user terminal
  • SS Subscriber Station
  • wireless device wireless device
  • the terminal 420 may be one of the terminals 100 to 300 described with reference to FIGS. 1 to 3.
  • multiple access schemes for downlink and uplink transmission may be different.
  • downlink may use OFDMA and uplink may use Single Carrier-Frequency Division Multiple Access (SC-FDMA).
  • SC-FDMA Single Carrier-Frequency Division Multiple Access
  • embodiments of the present disclosure may be configured to simultaneously transmit ACK / NACK and scheduling requests in a TDD (Time Division Duplex) system of a next-generation mobile communication system.
  • TDD Time Division Duplex
  • a method or apparatus for transmitting ACK / NACK and uplink control information for a scheduling request at the same time is disclosed.
  • the terminal 420 learns the resource index through a signaling value for the resource index directly received from the base station 410 or a value calculated through control channel element (CCE) information of the PDCCH (S430).
  • CCE control channel element
  • Resource Index in PUCCH Format 1 / 1a / 1b Orthogonal sequence index that provides the cyclic delay value and orthogonality of the sequence, as well as the location of the physical resource block to which the ACK / NACK is transmitted Can be used to determine.
  • the resource index for HARQ ACK / NACK signal May be calculated as shown in Table 12 below.
  • HARQ ACK / NACK for the PDSCH transmitted in the nth subframe is the first control channel element (CCE) index n CCE of the PDCCH transmitted in the nth subframe and higher layer signaling. Or a value obtained through a separate control channel Resource index that is the sum of Is transmitted in the n + 4th subframe using. Is the total number of PUCCH format 1 / 1a / 1b resources required for semi-persistent scheduling (SPS) transmission and SR transmission.
  • SPS semi-persistent scheduling
  • the base station 410 determines that the information about the transmission of the SR is not present. May explicitly inform the terminal 420.
  • the configuration for the n + 4th subframe is a part that can be adjusted or otherwise configured in the implementation process.
  • the base station 410 may transmit data through the PDSCH assigned to the terminal 420 (S440).
  • the UE 420 may configure the PUCCH format as described with reference to FIGS. 1 to 3 according to whether one or two codewords included in the PDSCH allocated from the base station 410 are received and whether a scheduling request is performed. S450).
  • the terminal 420 may transmit whether to receive one or two codewords included in the allocated PDSCH and whether to request a scheduling request to the base station 510 through the PUCCH configured in step S450 (S460).
  • FIG. 5 is a configuration diagram of a base station according to another embodiment.
  • the base station 500 that receives the control signal from the terminal in the wireless communication system includes a transmitter 510 for transmitting and receiving a radio signal with the terminal, the receiver 530 and a controller 520 for controlling them.
  • the transmitter 510 transmits a PDSCH allocated to a specific terminal.
  • the receiver 530 generates a complex symbol by modulating one or more HARQ-ACK / NACK bits for a PDSCH transmission, and multiplies the generated complex symbol by a cyclic delayed sequence of length 12 to generate a block of complex symbols. Generate, scramble the generated block of complex symbols into a scrambling sequence, spread it into an orthogonal sequence, map it to a time-frequency resource, generate a signal from the mapped time-frequency resource, and specify a control signal Receive from the terminal.
  • an orthogonal sequence used for spreading in the first slot is one of orthogonal sequences belonging to the first orthogonal sequence group, and used for spreading in the second slot.
  • the orthogonal sequence may be one of orthogonal sequences belonging to the first orthogonal sequence group or one of orthogonal sequences belonging to the second orthogonal sequence group according to the presence or absence of the scheduling request SR.
  • the orthogonal sequence used for spreading in each slot is one of orthogonal sequences belonging to the first orthogonal sequence group depending on the presence or absence of a scheduling request SR. Or it may be one of orthogonal sequences belonging to the second orthogonal sequence group.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de transmission de signal, un procédé de traitement de signal, et un terminal correspondant, dans un système de communication sans fil. Plus particulièrement, la présente invention concerne un procédé pour un terminal destiné à la génération et la transmission de signaux de commande dans un système de communication sans fil. Le procédé consiste: à générer des symboles à valeur complexe par modulation d'un ou plusieurs bits HARQ-ACK/NACK; à générer un bloc de symboles à valeur complexe par multiplication des symboles à valeur complexe générés par une séquence de décalage cyclique présentant une longueur de 12; à embrouiller le bloc généré de symboles à valeur complexe au moyen de séquences d'embrouillage, à l'étaler au moyen de séquences orthogonales et à le mapper avec une ressource temps-fréquence; et à générer un signal de commande au moyen de la ressource temps-fréquence mappée, puis à le transmettre. Concernant deux intervalles dans une sous-trame, la séquence orthogonale utilisée pour l'étalement dans un premier intervalle est l'une des séquences orthogonales appartenant à un premier groupe de séquences orthogonales, et la séquence orthogonale utilisée pour l'étalement dans un second intervalle est soit l'une des séquences orthogonales appartenant au premier groupe de séquences orthogonales, soit l'une des séquences orthogonales appartenant à un second groupe de séquences orthogonales, selon la présence ou non d'une demande d'ordonnancement (SR).
PCT/KR2012/003598 2011-07-04 2012-05-08 Procédé de transmission de signal et procédé de traitement de signal, terminal correspondant, et station de base correspondante, dans un système de communication sans fil Ceased WO2013005920A1 (fr)

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KR102768662B1 (ko) * 2018-05-31 2025-02-17 한국전자통신연구원 통신 시스템에서 식별자 정보에 기초한 비직교 전송을 위한 방법 및 장치

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KR20080085918A (ko) * 2006-01-18 2008-09-24 모토로라 인코포레이티드 Ｏｆｄｍａ 시스템에서 제어 채널 정보를 운반하기 위한 방법 및 장치
WO2009087741A1 (fr) * 2008-01-04 2009-07-16 Panasonic Corporation Dispositif de terminal de communication radio et procédé de transmission radio
KR20090086445A (ko) * 2007-08-08 2009-08-12 엘지전자 주식회사 무선통신 시스템에서 상향링크 제어신호들을 전송하는 방법
KR20090098735A (ko) * 2008-03-14 2009-09-17 삼성전자주식회사 Ｌｔｅ에서 업링크 채널화 방법
KR20110055363A (ko) * 2009-11-18 2011-05-25 엘지전자 주식회사 무선 통신 시스템에서 ｈａｒｑ 수행 방법 및 장치

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KR20080085918A (ko) * 2006-01-18 2008-09-24 모토로라 인코포레이티드 Ｏｆｄｍａ 시스템에서 제어 채널 정보를 운반하기 위한 방법 및 장치
KR20090086445A (ko) * 2007-08-08 2009-08-12 엘지전자 주식회사 무선통신 시스템에서 상향링크 제어신호들을 전송하는 방법
WO2009087741A1 (fr) * 2008-01-04 2009-07-16 Panasonic Corporation Dispositif de terminal de communication radio et procédé de transmission radio
KR20090098735A (ko) * 2008-03-14 2009-09-17 삼성전자주식회사 Ｌｔｅ에서 업링크 채널화 방법
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