WO2012033335A2 - 무선 통신 시스템에서 제어 정보의 전송 방법 및 장치 - Google Patents
무선 통신 시스템에서 제어 정보의 전송 방법 및 장치 Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- 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
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
-
- 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
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- 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
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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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
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
- H04L27/2636—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
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- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/0012—Hopping in multicarrier systems
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- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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- 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
Definitions
- the present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting control information.
- the wireless communication system can support carrier aggregation (CA).
- CA carrier aggregation
- Wireless communication systems are widely deployed to provide various kinds of communication services such as voice and data.
- a wireless communication system is a multiple access system capable of supporting communication with multiple users by sharing available system resources (bandwidth, transmission power, etc.).
- multiple access systems include code division multiple access (CDMA) systems, frequency division multiple access (FDMA) systems, time, division multiple access (TDMA) systems, orthogonal frequency division multiple access (0FDMA) systems, and single carrier (SC-FDMA) systems. frequency division multiple access) systems.
- An object of the present invention is to provide a method and an apparatus therefor for efficiently transmitting control information in a wireless communication system. It is another object of the present invention to provide a channel format, signal processing, and apparatus therefor for efficiently transmitting control information. have. It is still another object of the present invention to provide a method for efficiently allocating resources for transmitting control information and an apparatus therefor.
- a communication device configured to transmit a PUCCH (Physical Uplink Control Channel) signal in a wireless communication system, comprising: a radio frequency (RF) unit; And a processor, wherein the processor ( a ) spreads block-wise spreading using the orthogonal sequence of length ⁇ 5.
- RF radio frequency
- the PUCCH signal may be transmitted through a subframe for SRS (Sounding Reference Signal).
- SRS Sounding Reference Signal
- the PUCCH signal is transmitted using the five SC-FDMA (Sin g Ie Carrier Frequency Division Multiple Access) symbol in the slot 0, it may be transmitted by using the four SC-FDMA symbols in the slot.
- the PUCCH signal is transmitted using SC-FDMA symbols of indexes 0, 2, 3, 4, and 6 in slot 0, and performs SC-FDMA symbols of indexes 0, 2, 3, and 4 in slot 1. Can be sent.
- the first modulation symbol string may be transmitted through the slot 0, and the second modulation symbol string may be transmitted through the slot 1.
- the PUCCH signal may include uplink control information (UCI).
- UCI uplink control information
- a plurality of serving cells may be configured for the communication device.
- 1 illustrates physical channels used in a 3GPP LTE system, which is an example of a wireless communication system, and a general signal transmission method using the same.
- 2 illustrates the structure of a radio frame.
- 3A illustrates an uplink signal processing process.
- 3B illustrates a downlink signal processing process
- FIG. 5 illustrates a signal mapping scheme in the frequency domain to satisfy a single carrier characteristic.
- FIG. 7 and 8 illustrate a signal processing procedure in which DFT process output samples are mapped to multi-carriers in a cluster SC—FDMA.
- FIG. 10 illustrates a structure of an uplink subframe.
- FIG. 11 illustrates a signal processing procedure for transmitting a reference signal (RS) in uplink.
- RS reference signal
- DMRS demodulation reference signal
- 13-14 illustrate slot level structures of the PUCCH formats la and lb.
- 15 through 16 illustrate the slot level structure of the PUCCH format 2 / 2a / 2b.
- 17 illustrates ACK / NACK channelization for PUCCH formats la and lb.
- 20 illustrates a concept of managing a downlink component carrier at a base station.
- 21 illustrates a concept of managing an uplink component carrier in a terminal.
- 22 illustrates a concept in which one MAC manages multicarriers in a base station.
- 23 illustrates a 7fl concept in which one MAC manages multicarriers in a terminal.
- 24 illustrates a concept in which one MAC manages multicarriers in a base station.
- 25 illustrates a concept in which a plurality of MACs manage a multicarrier in a terminal.
- 26 illustrates a concept in which a plurality of MACs manage a multicarrier in a base station.
- 27 illustrates a concept in which one or more MACs manage a multicarrier from a reception point of a terminal.
- 29A to 29F illustrate a structure and a signal processing process of a PUCCH format 3.
- 30-31 illustrate the structure and signal processing of the PUCCH format 3 with increased RS multiplexing capacity.
- 33 illustrates the effect of code distances on orthogonality between orthogonal codes.
- 34 illustrates the influence of the residual timing on the orthogonality of the orthogonal code.
- 35 illustrates orthogonal performance of codes constructed according to an embodiment of the present invention.
- 36 shows an example of transmitting a PUCCH signal according to an embodiment of the present invention.
- 37 illustrates a base station and a terminal that can be applied to the present invention.
- CDMA code division mult iple access
- FDMA frequency division multiple access
- TDMA time division multiple access
- SC-FDMA single carrier frequency division multiple access
- CDMA may be implemented with radio technologies such as UTRA Universal Terrestrial Radio Access) or CDMA2000.
- TDMA may be implemented in a wireless technology such as Global System for Mobile communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE).
- GSM Global System for Mobile communications
- GPRS General Packet Radio Service
- EDGE Enhanced Data Rates for GSM Evolution
- 0FDMA may be implemented in a wireless technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, E-UTRAC Evolved UTRA.
- UTRA is part of the UMTS Universal Mobile Telecom TM universal systems.
- 3rd Generation Partnership Project (3GPP) LTEdong term evolution (3GPP) is part of E—Uvolved UMTS (E-UMTS) using E-UTRA and LTE-A (Advanced) is an evolution of 3GPP LTE.
- 3GPP LTEdong term evolution 3GPP
- E-UMTS E—Uvolved UMTS
- LTE-A Advanced
- a terminal receives information through a downlink (DL) from a base station, and the terminal transmits the information through an uplink (UL) to the base station.
- the information transmitted and received between the base station and the terminal includes data and various control information, and various physical channels exist according to the type / use of the information transmitted and received.
- FIG. 1 is a diagram for explaining physical channels used in a 3GPP LTE system and a general signal transmission method using the same.
- step S101 an initial cell search operation such as synchronization with a base station is performed.
- the UE receives a Primary Synchronization Channel (P-SCH) and a Secondary Synchronization Channel (S-SCH) from the base station, synchronizes with the base station, and obtains information such as a cell ID.
- the terminal may receive a physical broadcast channel from the base station to obtain broadcast information in a cell.
- the terminal may receive a downlink reference signal (DL RS) in the initial cell search step to confirm the downlink channel state.
- DL RS downlink reference signal
- the UE After completing the initial cell search, the UE receives a physical downlink control channel (PDCCH) and a physical downlink control channel (PDSCH) according to the physical downlink control channel information in step S102 to provide more specific information.
- PDCCH physical downlink control channel
- PDSCH physical downlink control channel
- the terminal may perform a random access procedure such as steps S103 to S106 to complete the access to the base station.
- the UE transmits a preamble through a physical random access channel (PRACH) (S103), a response to a preamble through a physical downlink control channel and a physical downlink shared channel thereto.
- PRACH physical random access channel
- the message may be received (S104).
- content ion resolution procedures such as transmission of an additional physical random access channel (S105) and reception of a physical downlink control channel and a corresponding physical downlink shared channel (S106) may be performed. have.
- the terminal is a general uplink / downlink signal As a transmission procedure, a physical downlink control channel / physical downlink shared channel reception (S107) and a physical uplink shared channel (Physical Uplink Shared Channel)
- UCI uplink control information
- HARQ ACK / NACK Hybrid Automatic Repeat and reQuest Acknowledgment / Negat i-ACK
- SR Scheduling Request
- CQ I Channel Quality Indicator
- RQ PMK Precoding Matrix Indicator
- RI Rank Indication
- HARQ ACK / NACK is simply referred to as HARQ-ACK or ACK / NACK (A / N).
- HARQ-ACK includes at least one of positive ACK (simply ACK), negative ACK (NACK), DTX, and NACK / DTX.
- UCI is generally transmitted through a PUCCH, but may be transmitted through a PUSCH when control information and traffic data are to be transmitted at the same time. In addition, the UCI may be aperiodically transmitted through the PUSCH according to a network request / instruction.
- 2 illustrates the structure of a radio frame.
- uplink / downlink data packet transmission is performed in units of subframes, and one subframe is defined as a predetermined time interval including a plurality of OFDM symbols.
- the downlink radio frame consists of 10 subframes, one of which A subframe consists of two slots in the time domain.
- the time taken for one subframe to be transmitted is called a transmission time interval (TTI).
- TTI transmission time interval
- one subframe may have a length of 1 ms
- one slot may have a length of 0.5 ms.
- One slot includes a plurality of 0FOM symbols in the time domain and includes a plurality of resource blocks (RBs) in the frequency domain.
- RBs resource blocks
- a resource block (RB) as a resource allocation unit may include a plurality of consecutive subcarriers in one slot.
- the number of OFDM symbols included in one slot may vary depending on the configuration of a cyclic prefix (CP).
- CP has an extended CP (standard CP) and a standard CPC normal CP (CP).
- standard CP standard CP
- the number of OFDM symbols included in one slot may be seven.
- the OFDM symbol is configured by an extended CP, since the length of one OFDM symbol is increased, the number of OFDM symbols included in one slot is smaller than that of the standard CP.
- the number of OFDM symbols included in one slot may be six. If the channel state is unstable, such as when the terminal moves at a high speed, an extended CP may be used to further reduce inter-symbol interference.
- Type 2 radio frame consists of two half frames, each half frame consists of five subframes, D nnnk Pilot Time Slot (DwPTS), Guard Period (GP), UpPTSCUplink Pilot Time Slot ) And one subframe consists of two slots.
- DwPTS is used for initial cell search, synchronization or channel estimation at the terminal.
- UpPTS is used for channel estimation at the base station and ' uplink transmission synchronization of the terminal.
- the guard period is a period for removing interference generated in the uplink due to the multipath delay of the downlink signal between the uplink and the downlink.
- the structure of the radio frame is only an example, and the number of subframes included in the radio frame or the number of slots included in the subframe and the number of symbols included in the slot may be variously changed.
- 3A is a diagram for describing a signal processing procedure for transmitting an uplink signal by a terminal.
- scrambling modules 210 of the terminal may scramble the transmission signal using the terminal specific scramble signal.
- the scrambled signal is input to the modulation mapper 220 and complexed using BPSRCBinary Phase Shift Keying (QPSRC), Quadrature Phase Shift Keying (QPS), or 16QAM / 64QAM (Quadrature Amplitude Modulation) according to the type and / or channel state of the transmitted signal. Modulated into a complex symbol.
- the modulated complex symbol is processed by transform precoder 230 and then input to resource element mapper 240, which resource element mapper 240 time-frequency the complex symbol. Can map to a resource element.
- the signal thus processed may be transmitted to the base station through the antenna via the SC-FDMA signal generator 250.
- 3B is a diagram for describing a signal processing procedure for transmitting a downlink signal by a base station. ⁇ .
- the base station may transmit one or more codewords (codeword) in the downlink.
- the codewords may each be processed into complex symbols via the scrambled modality 301 and the modulation mapper 302 as in the uplink of FIG. 3A, after which the complex symbols may be processed by the layer mapper 303 into a plurality of layers ( Mapped to a layer, each layer may be multiplied by a precoding matrix by the precoding modes 304 and assigned to each transmit antenna.
- the transmission signal for each antenna of the process each time by a resource element mapper 305 - are mapped to frequency resource elements, after (DM Orthogonal Frequency Division Multiple Access) via the signal generator 306 to be transmitted through each antenna Can be.
- the uplink signal transmission uses a single carrier-frequency division multiple access (SC-FDMA) scheme, unlike the 0FOMA scheme used for the downlink signal transmission.
- SC-FDMA single carrier-frequency division multiple access
- 3GPP system adopts 0FDMA on downlink and SC-FDMA on uplink
- both a terminal for uplink signal transmission and a base station for downlink signal transmission, a serial-to-parallel converter 401, a subcarrier includes a mapper 403, an M-point IDFT mode 404, and a cyclic prefix (CP) additional models 406.
- the terminal for transmitting the signal by the SC-FDMA scheme further includes an N-point DFT mode 402.
- the N-point DFT modes 402 partially offset the IDFT processing impact of the M-point IDFT modes 404 so that the transmitted signal has a single carrier property.
- FIG. 5 is a diagram illustrating a signal mapping method in a frequency domain for satisfying a single carrier characteristic in the frequency domain.
- FIG. 5 (a) shows a localized mapping scheme
- FIG. 5 (b) shows a distributed mapping scheme.
- Clustered SC-FDMA is a modified form of SC-FDMA.
- Clustered SC-FDMA divides DFT process output samples into sub-groups during subcarrier mapping and discontinuously maps them to the frequency domain (or subcarrier domain).
- FIG. 6 is a diagram illustrating a signal processing procedure in which DFT process output samples are mapped to a single carrier in a cluster SC-FDMA.
- 7 and 8 illustrate a signal processing procedure in which DFT process output samples are mapped to multi-carriers in a cluster SC-FDMA.
- 6 illustrates an example of applying intra-carrier cluster SC-FDMA
- FIGS. 7 and 8 correspond to an example of applying inter-carrier cluster SC-FDMA.
- FIG. 7 illustrates a single IFFT block when subcarrier spacing between adjacent component carriers is aligned in a case where component carriers are allocated contiguous in the frequency domain. Indicates the case of generating a signal through.
- FIG. 8 illustrates a case where a signal is generated through a plurality of IFFT blocks in a situation in which component carriers are allocated non-contiguous in the frequency domain.
- Segment SC-FDMA uses the same number of IFFTs as any number of DFTs.
- the DFT and the IFFT has a one-to-one relationship, it is simply an extension of the conventional SC-FDMA DFT spreading and the IFFT frequency subcarrier mapping configuration and may be referred to as NxSOFDMA or NxDFT-s-OFDMA.
- NxSOFDMA NxSOFDMA
- NxDFT-s-OFDMA NxDFT-s-OFDMA.
- This specification collectively names them Segment SC-FDMA.
- the segment SC-FDMA performs a DFT process on a group basis by grouping all time domain modulation symbols into N (N is an integer greater than 1) groups to alleviate a single carrier characteristic condition.
- FIG. 10 illustrates a structure of an uplink subframe.
- an uplink subframe includes a plurality of slots (eg, two).
- the slot may include different numbers of SC—FDMA symbols according to CP Cyclic Prefix) length.
- a slot may include 7 SOFDMA symbols.
- the uplink subframe is divided into a data region and a control region.
- the data area includes a PUSCH and is used to transmit data signals such as voice.
- the control region includes a PUCCH and is used to transmit control information.
- the uplink control information includes HARQ ACK / NACK, Channel Quality Indicator (CQI), PMKPrecoding Matrix Indicator), RKRank Indication), and the like.
- 11 is a diagram illustrating a signal processing procedure for transmitting a reference signal in the uplink. Data is converted into a frequency domain signal through the DFT precoder, and then transmitted through the IFFT after frequency mapping, whereas the RS passes through the DF precoder. Specifically, after the RS sequence is immediately generated (S11) in the frequency domain, the RS is sequentially transmitted through a localization mapping process (S12), an IFFTCS13 process, and a cyclic prefix (CP) attachment process (S14).
- S12 localization mapping process
- CP cyclic prefix
- RS sequence is defined by the cyclic shift (cyclic shi ft) a of the base sequence (base sequence) can be expressed as Equation 1.
- W ⁇ is the size of the resource block in subcarrier units
- m is 1 ⁇ « ⁇ ⁇ . ' Denotes the maximum uplink transmission band.
- E ⁇ 0 ⁇ ' 29 ⁇ represents the group number
- a basic sequence with a length greater than 5I ⁇ SC can be defined as
- Equation 2 the q th root Zadoff-Chu sequence may be defined by Equation 3 below.
- a basic sequence with a length less than s c can be defined as For sc ⁇ sc and SC -2N, the basic sequence is given by Equation 5.
- Sequence group hopping may be enabled or disabled by a parameter that activates group hopping provided by a higher layer.
- PUCCH and PUSCH have the same hopping pattern but may have different sequence shift patterns.
- the group hopping pattern ⁇ g h (" s ) is the same for PUSCH and PUCCH and is given by the following equation: [Equation 7] if group hopping is disabled
- C ( Z ) corresponds to a pseudo-random sequence
- the sequence generator can be initialized to the beginning of each radio frame f
- sequence shift pattern ⁇ differs between PUCCH and PUSCH.
- Sequence hopping is only applied for reference signals of length Msc ⁇ 6iV ⁇ .
- Equation 8 the basic sequence number in the basic sequence group in slot s is given by Equation 8 below.
- Pseudo-Random Sequence Generator generates V ID 5 at the start of a radio frame, -PUSCH
- the reference signal for the PUSCH is determined as follows.
- DMRS is to be broadcast, DMRS is given by the UL Scheduling assignment, "PRS C" s) will leak a certain cyclic shift values eu "PRS C” S) is the slot number
- the generator can be initialized to at the start of the radio frame.
- Table 3 shows the cyclic shift fields in DCKDownlink Control Information format 0.
- the physical mapping method for the uplink RS in the PUSCH is as follows.
- the sequence will be multiplied by an amplitude scaling factor ⁇ PUSCH and will be mapped to the same set of Physical Resource Blocks (PRBs) used for the PUSCHs to be performed in the sequence AJ with r .
- PRBs Physical Resource Blocks
- FIG. 12A illustrates a demodulation reference signal (DMRS) structure for a PUSCH in the case of a normal CP
- FIG. 12B illustrates a DMRS structure for a PUSCH in the case of an extended CP.
- DMRS demodulation reference signal
- FIG. 12B illustrates a DMRS structure for a PUSCH in the case of an extended CP.
- the DMRS is transmitted through the fourth and eleventh SC-FDMA symbols
- FIG. 12B the DMRS is transmitted through the third and ninth SOFDMA symbols.
- PUCCH 13-16 illustrate a slot level structure of the PUCCH format.
- PUCCH includes the following format for transmitting control information.
- Table 4 shows the modulation scheme and the number of bits per subframe according to the PIXXH format.
- Table 5 shows the number of RSs per slot according to the PUCCH format.
- Table 6 is a table showing the SC-FDMA symbol position of the RS according to the PUCCH format.
- PUCCH formats 2a and 2b correspond to a standard cyclic prefix.
- the ACK / NACK signal includes a cyclic shift (CS) (frequency domain code) and an orthogonal cover code (orthogonal cover code) of a computer-generated constant amplitude zero auto correlation (CG-CAZAC) sequence. , OC or OCC) (hours Domain spreading code).
- CS cyclic shift
- orthogonal cover code orthogonal cover code
- CG-CAZAC computer-generated constant amplitude zero auto correlation
- 0C includes, for example, Walsh / DFT orthogonal code.
- a total of 18 terminals may be multiplexed in the same physical resource block (PRB) based on a single antenna.
- Orthogonal sequences w0, wl, w2, w3 can be applied in any time domain (after FFT modulation) or in any frequency domain (before FFT modulation).
- ACK / NACK resources composed of CS, 0C, and PRB (Physical Resource Block) may be given to the UE through RRC (Rad) Resource Control (RRC).
- RRC Resource Control
- ACK / NACK resources may be implicitly given to the UE by the lowest CCE index of the PDCCH for the PDSCH.
- 15 shows PUCCH format 2 / 2a / 2b in the case of standard cyclic prefix.
- 16 shows PUCCH format 2 / 2a / 2b in case of extended cyclic prefix.
- 15 and 16 in the case of the standard CP, one subframe includes 10 QPSK data symbols in addition to the RS symbol. Each QPSK symbol is spread in the frequency domain by the CS and then mapped to the corresponding SC-FDMA symbol. SC-FDMA symbol level CS hopping may be applied to randomize inter-cell interference.
- RS can be multiplexed by CDM using cyclic shift. For example, assuming that the number of available CSs is 12 or 6, 12 or 6 terminals may be multiplexed in the same PRB, respectively. In other words, a plurality of terminals in PUCCH formats 1 / la / lb and 2 / 2a / 2b may be multiplexed by CS + 0C + PRB and CS + PRB, respectively.
- Orthogonal sequences (0C) of length -4 and length -3 for PUCCH format 1 / la ⁇ b are shown in the following table. And shown in Table 8.
- Cyclic Shift (CS) hopping and Orthogonal Cover (0C) remapping may be applied as follows.
- the resource n r for the PUCCH format la / lb includes the following combination.
- n r includes n cs , n oc , n r b when the indices representing CS, OC, and RB are n cs , n oc , 1, respectively.
- RI and CQI and ACK / NACK may be transmitted through the PUCCH format 2 / 2a / 2b.
- Reed Muller (RM) channel coding may be applied.
- channel coding for UL CQI in an LTE system is described as follows.
- the bit stream ⁇ 1 1 ⁇ 1 is channel coded using the (20, A) RM code.
- Table 10 shows a basic sequence for the (20, A) code. with ⁇
- ⁇ ⁇ ⁇ 1 indicates MSB (Most Significant Bit) and LSBCLeast Significant Bit (MSB).
- MSB Most Significant Bit
- MSB LSBCLeast Significant Bit
- the maximum information bit is 11 bits except when the CQI and the ACK / NACK are simultaneously transmitted.
- the channel coding bits "0,” 1, " 2 ,” 3 , ⁇ -1 may be generated by Equation 9.
- Table 11 shows the UCl Jplink Control Information field for wideband reporting (single antenna port, transmit diversity or open loop spatial multiplexing PDSCH) CQI feedback.
- Table 12 shows the UCI fields for CQI and PMI feedback for broadband. Field is used for closed loop spatial multiplexing PDSCH transmissions.
- Table 12 shows a UCI field for RI feedback for wideband reporting.
- the PRB may be used for PUCCH transmission in slot ⁇ .
- a multicarrier system or carrier aggregation system includes a plurality of carriers having a band smaller than a target bandwidth for wideband support.
- the band of carriers to be aggregated may be limited to the bandwidth used by the existing system for backward compatibility with the existing system.
- the existing LTE system supports bandwidths of 1.4, 3, 5, 10, 15, and 20 MHz
- LTE-A LTE-Advanced
- Only bandwidths can be used to support bandwidths greater than 20 MHz.
- a new bandwidth can be defined to support carrier aggregation regardless of the bandwidth used by the existing system.
- Multicarrier is a name that can be used commonly with carrier aggregation and bandwidth aggregation.
- carrier aggregation collectively refers to both contiguous and non-contiguous carrier merging.
- FIG. 20 is a diagram illustrating a concept of managing downlink component carriers in a base station
- FIG. 21 is a diagram illustrating a concept of managing uplink component carriers in a terminal.
- the upper layers will be briefly described as MACs in FIGS. 20 and 21.
- 22 illustrates a concept in which one C manages multicarriers in a base station.
- 23 illustrates a concept in which one MAC manages multicarriers in a terminal.
- one MAC manages and operates one or more frequency carriers to perform transmission and reception. Frequency carriers managed in one MAC do not need to be contiguous with each other, which is advantageous in terms of resource management.
- one PHY means one component carrier for convenience.
- one PHY does not necessarily mean an independent radio frequency (RF) device.
- RF radio frequency
- one independent RF device means one PHY, but is not necessarily limited thereto, and one RF device may include several PHYs.
- 24 illustrates a concept in which a plurality of MACs manages multicarriers in a base station.
- 25 illustrates a concept in which a plurality of MACs manage a multicarrier in a terminal.
- 26 is Another concept of managing multiple carriers by multiple MACs in a base station is described.
- 27 illustrates another concept in which a plurality of MACs manage a multicarrier in a terminal.
- multiple carriers may control several carriers instead of one MAC.
- each carrier may be controlled by a 1: 1 MAC, and as shown in FIGS. 26 and 27, each carrier is controlled by a 1: 1 MAC for each carrier and the rest is controlled.
- One or more carriers can be controlled by one MAC.
- the above system is a system including a plurality of carriers from 1 to N, and each carrier may be used adjacent or non-contiguous. This can be applied to the uplink / downlink without distinction.
- the TDD system is configured to operate N multiple carriers including downlink and uplink transmission in each carrier, and the FDD system is configured to use multiple carriers for uplink and downlink, respectively.
- asymmetrical carrier aggregation may be supported in which the number of carriers and / or the carrier bandwidths are merged in uplink and downlink.
- FIG. 28 exemplifies a scenario in which uplink control information (UCI) is transmitted in a wireless communication system supporting carrier aggregation. For convenience, this example assumes that UCI is ACK / NACK (A / N).
- UCI uplink control information
- UCI may include without limitation control information such as channel state information (CSI) (eg, CQI, PMI, RI), and scheduling request information (eg, SR).
- CSI channel state information
- SR scheduling request information
- UCI may include without limitation control information such as channel state information (CSI) (eg, CQI, PMI, RI), and scheduling request information (eg, SR).
- CSI channel state information
- SR scheduling request information
- At least 10 bits of ACK / NACK bits are required to transmit ACK / NACK for data received through five DL CCs through one UL CC.
- At least 12 bits are required for ACK / NACK transmission. Since the conventional PUCCH format la / lb can send ACK / NACK up to 2 bits, such a structure cannot transmit increased ACK / NACK information.
- carrier aggregation is illustrated as an increase in the amount of UCI information, this situation may occur due to an increase in the number of antennas and the presence of a backhaul subframe in the TDD system relay system. Similar to ACK / NACK, even when transmitting control information associated with a plurality of DL CCs through one UL CC, the amount of control information to be transmitted is increased. For example, for a plurality of DL C
- the DL primary CC may be defined as a DL CC linked with an UL primary CC.
- the linkage here encompasses both implicit and explicit linkage (1 inkage).
- one DL CC and one UL CC are uniquely paired.
- a DL CC linked with an UL primary CC may be referred to as a DL primary CC by LTE pairing. You can think of this as an implicit linkage.
- Explicit linkage means that the network configures the linkage in advance and can be signaled through RRC.
- a DL CC paired with a UL primary CC may be referred to as a primary DL CC.
- the UL primary (or anchor) CC may be a UL CC on which the PUCCH is transmitted.
- the UL primary CC may be a UL CC through which UCI is transmitted through PUCCH or PUSCH.
- the DL primary CC may be configured through higher layer signaling.
- the DL primary CC may be a DL CC to which the UE performs initial access.
- a DL CC except for the DL primary CC may be referred to as a DL secondary CC.
- the UL CC except for the UL primary CC may be referred to as a UL secondary CC.
- LTE-A uses the concept of a cell to manage radio resources.
- a cell is defined as a combination of downlink resources and uplink resources, and uplink resources are not required. Accordingly, the cell may be configured with only downlink resources or with downlink resources and uplink resources. If carrier aggregation is supported, the linkage between the carrier frequency (or DL CC) of the downlink resource and the carrier frequency (or UL CC) of the uplink resource may be indicated by system information.
- Primary frequency or
- a cell operating on a PCC is referred to as a primary cell (PCell),
- a cell operating on the secondary frequency (or SCC) may be referred to as a secondary cell (SCell).
- DL CC and UL CC may be referred to as DL cell and UL cell, respectively.
- the anchor (or primary) DL CC and anchor (or primary) UL CC may be referred to as ' DL PCell (primary cell) and UL PCell, respectively.
- the PCell is used by the terminal to perform an initial connection establishment process or to perform a connection re-establishment process.
- PCell may refer to a cell indicated in the handover process.
- the SCell is configurable after the RC connection is established and can be used to provide additional radio resources.
- PCell and SCell may be collectively referred to as a serving cell. Accordingly, in the case of the UE which is in the RRC_C0N ECTED state but the carrier aggregation is not configured or does not support the carrier aggregation, there is only one serving cell composed of the PCell. On the other hand, in the case of the UE in the RRC_C0NNECTED state and the carrier aggregation is configured, one or more serving cells exist, and all the serving cells include the PCell and the entire SCell. For carrier aggregation, after the initial security activation process is initiated, the network may configure one or more SCells for terminals supporting carrier aggregation in addition to the PCell initially configured in the connection establishment process.
- DL-UL pairing may correspond to FDD only. Since TDD uses the same frequency, separate DL-UL pairing may not be defined.
- DL—UL linkage may be determined from the UL linkage through UL EEARU Radio Absolute Radio Frequency Channel Number (EARFCN) information of SIB2. For example, the DL—UL linkage may be obtained through SIB2 decoding at initial connection and otherwise via RRC signaling. therefore,
- DL CC # 0 and UL CC # 0 have a SIB2 linkage relationship with each other, and the remaining DL CCs may have a SIB2 linkage relationship with other UL CCs not configured for the UE. Can be.
- a PUCCH format for feeding back UCI (eg, multiple A / N bits) in a communication system supporting carrier aggregation is called a CA PUCCH format (or PUCCH format 3).
- PUCCH format 3 may be used to transmit A / N information (including DTX state) that advertises on PDSCH (or PDCCH) transmitted from multiple DL serving cells.
- 29A to 29F illustrate a structure and a signal processing process of PUCCH format 3.
- a channel coding block may channel-code information bits a_0, a_l, ..., a_M-l (e.g., multiple ACK / NACK bits) to encode an encoded bit, coded bit or coding bits) (or codewords) b_0, b_l, ..., b_N-l.
- M represents the size of the information bits
- N represents the size of the coding bits.
- the information bit includes uplink control information (UCI), for example, multiple ACK / NACKs for a plurality of data (or PDSCHs) received through a plurality of DL CCs.
- UCI uplink control information
- the information bits a_0, a_l ..., a-Ml are joint coded regardless of the type / number / size of the UCI constituting the information bits. For example, if the information bits include multiple ACK / NACKs for a plurality of DL CCs, channel coding is not performed for each DL CC and for individual ACK / NACK bits, but for all bits of information. A single codeword is generated.
- Channel coding is not limited to this, but simple repetition, simple coding, RMCReed Muller) coding, punctured RM coding, TBCXX tail-biting convolutional coding (LDBC), low-density parity-check (LDPC) or turbo-coding.
- coding bits may be rate-matched in consideration of modulation order and resource amount.
- the rate matching function may be included as part of the channel coding block or may be performed through a separate function block.
- the modulator comprises coding bits b_0, b_l,...
- the modulation symbols c_0, c_l, and c_L-l are generated by modulating b_N-l.
- L represents the size of the modulation symbol.
- the modulation method is performed by modifying the magnitude and phase of the transmission signal. Modulation methods include, for example, Phase Shift Keying (n-PSK) and Quadrature Amplitude Modulation (n-QAM) (n is an integer of 2 or more).
- the modulation method may include BPSK (BinaryPSK), QPSK (QuadraturePSK), 8-PSK, QAM, 16-QAM, 64-QAM, and the like.
- a divider divides modulation symbols c_0, c_l, and c_L-l into each slot.
- the order / pattern / method for dividing the modulation symbols into each slot is not particularly limited.
- the divider may divide a modulation symbol into each slot in order from the front (local type). In this case, as shown, modulation symbols c_0, c_l,... C_L / 2-1 may be divided into slot 0, and modulation symbols c_L / 2, c_L / 2 + 1, '..., and C # Ll may be divided into slot ' 1.
- the modulation symbols can be interleaved (or permutated) upon dispensing into each slot. For example, an even number modulation symbol may be divided into slot 0 and an odd number modulation symbol may be divided into slot 1. The modulation process and the dispensing process can be reversed.
- the DFT precoder is a DFT precoder (e.g., for modulation symbols divided into each slot to generate a single carrier waveform). 12-point DFT).
- the modulation symbols c_L / 2, c_L / 2 + 1, ..., c ⁇ Ll, which are DFT precoded with d_L / 2-1, and are divided into slot 1, are DFT symbols d_L / 2 and d_L / 2.
- DFT is precoded with +1, ..., d_L-l.
- DFT precoding can be replaced with other linear operations (eg, walsh precoding) that reciprocate.
- a spreading block spreads the signal on which the DFT is performed at the SC-FDMA symbol level (time domain).
- Time-domain spreading at the SC-FDMA symbol level is performed using a spreading code (or spreading sequence).
- the spreading code includes a quasi-orthogonal code and an orthogonal code.
- Quasi-orthogonal codes include, but are not limited to, Pseudo Noise (PN) codes.
- Orthogonal codes include, but are not limited to, Walsh codes, DFT codes.
- Orthogonal Code (0C) may be commonly used with orthogonal sequence, Orthogonal Cover (0C), Orthogonal Cover Code (OCC).
- the orthogonal code is mainly described as a representative example of the spreading code, but this is an example.
- the spreading code size (or spreading factor (SF)) and the maximum value are limited by the number of SC-FDMA symbols used for transmission of control information. For example, when four SC-FDMA symbols are used for transmission of control information in one slot, a (quasi) orthogonal code (, 1, 2, 3) of length 4 may be used for each slot.
- the signal generated through the above process is mapped to a subcarrier in the PRB and then converted into a time domain signal through an IFFT.
- CP is added to the time domain signal, and the generated SC-FDMA symbol is transmitted through the RF terminal.
- the ACK / NACK bits for this may be 12 bits when including the DTX state.
- the coding block size (after rate matching) may be 48 bits.
- the coding bits are modulated into 24 QPSK symbols, and the generated QPSK symbols are divided into 12 slots each.
- the signal processing described with reference to FIG. 29A is an example, and the signal mapped to the PRB in FIG. 29A may be obtained through various equivalent signal processing.
- 29B to 29G illustrate signal processing equivalents to those illustrated in FIG. 29A.
- FIG. 29B is a reversed order of processing of the DFT precoder and the spreading block in FIG. 29A.
- the function of the spreading block is the same as multiplying the DFT symbol string output from the DFT precoder by a specific constant at the SC-FDMA symbol level, and thus the values of the signals mapped to the SC-FDMA symbol are the same even if their order is changed.
- signal processing for PUCCH format 3 may be performed in the order of channel coding, modulation, division, spreading, and DFT precoding.
- the dispensing process and the spreading process may be performed by one functional block.
- the modulation symbols may be alternately divided into respective slots, and each modulation symbol may be spread at the SC-FDMA symbol level simultaneously with the division.
- each modulation symbol may be copied to the size of a spreading code, and each modulation symbol and spreading element may be multiplied one-to-one. Therefore, the modulation symbol sequence generated for each slot is spread to a plurality of SC-FDMA symbols at the SC-FDMA symbol level. After that, the complex symbol strings for each SC-FDMA symbol are DFT precoded in units of SC-FDMA symbols. do.
- FIG. 29C changes the processing order of the modulator and divider in FIG. 29A. Accordingly, the process for PUCCH format 3 may be performed by joint channel coding and division at a subframe level, followed by modulation, DFT precoding, and spreading at each slot level.
- FIG. 29D further changes the processing order of the DFT precoder and the spreading block in FIG. 29C. As mentioned above, the function of the spreading block is equivalent to multiplying a DFT symbol string output from the DFT precoder by a certain constant at the SC-FDMA symbol level. Therefore, even if their order is changed, the values of the signals mapped to the SC-FDMA symbols are the same.
- PUCCH signal processing for format 3 a joint channel coding and frequency division is performed in sub-frame level, and the modulation achieved in each slot level.
- Modulation symbol generated per slot The columns are spread over a plurality of SC-FDMA symbols at the SC-FDMA symbol level, and the modulation symbol strings for each SC-FDMA symbol are in the order of DFT precoding in units of SOFDMA symbols.
- the modulation process and the spreading process may be performed by one functional block. For example, while modulating the coding bits, the generated modulation symbols can be spread directly at the SC-FDMA symbol level.
- the modulation symbols generated when the coding bits are modulated may be copied to the size of the spreading code, and the modulation symbols and the elements of the spreading code may be multiplied one by one.
- FIG. 29E illustrates a case where PUCCH format 3 is applied to a structure of PUCCH format 2 (standard CP)
- FIG. 29F illustrates a case where PUCCH format 3 is applied to a structure of PUCCH format 2 (extended CP).
- Basic signal processing is the same as described with reference to FIGS. 29A to 29D.
- the number / locations of the UCI SC-FDMA symbols and the RS SC-FDMA symbols in the PUCCH format 3 are different from those of FIG. 29A.
- Table 14 shows the positions of RS SC-FDMA symbols in the PUCCH format 3 shown.
- the standard cyclic prefix seven SC-FDMA symbols in the slot are assumed (index: 0 to 6)
- six SC-FDMA symbols in the slot are assumed (index: 0 to 5).
- the RS may inherit the structure of the existing LTE.
- the RS sequence It can be defined by the cyclic shift of the base sequence (see equation 1).
- the UCI data part has a multiplexing capacity of 5 due to SF-5.
- the multiplexing capacity is determined according to the cyclic shift interval ⁇ . Specifically,
- a PUCC ⁇ PUCCH ⁇ 1 ⁇ PUCCH _ ⁇ »PUCC ⁇ Multiplexing capacity is given in Mft .
- Mft Multiplexing capacity
- the total multiplexing capacity is limited to the smaller of the two and becomes four.
- 30 illustrates a structure of PUCCH format 3 with increased multiplexing capacity. Referring to FIG. 30, SC-FDMA symbol level spreading is applied to an RS part in a slot. Because of this.
- yl is applied to the first RS SC-FDMA symbol in the slot, and y2 is applied to the second RS SC-FDMA symbol in the slot.
- FIG. 31 shows a structure of another PUCCH format 3 with increased multiplexing capacity.
- multiplexing capacity may be doubled again by additionally performing spreading or covering (eg, Walsh covering) on a slot basis.
- spreading or covering e.g. Walsh covering
- Walsh covering on a slot basis Orthogonality can be broken due to differences in channel conditions experienced in the slots.
- Slot-by-slot spreading code e.g. orthogonal code cover
- xl applies to the first slot and x2 applies to the second slot.
- the Sounding Reference Signal is transmitted on the last SC-FDMA symbol of the subframe. Therefore, when PUCCH format 3 is to be transmitted in a subframe in which SRS transmission is configured (SRS transmission subframe), the last SC-FDMA symbol of the subframe is not used for PUCCH transmission to protect the SRS transmission.
- the SRS transmission subframe is given by cell-specific SRS configuration information and UE-specific SRS configuration information, and can be specified by period and offset.
- the SRS transmission subframe includes a subframe (terminal-specific SRS transmission subframe) in which the UE should transmit its SRS.
- the SRS transmission subframe may include a subframe (cell-specific SRS transmission subframe) in which SRS transmission is available in a cell, that is, another terminal may transmit the SRS.
- the UE-specific SRS transmission subframe set is included in the cell-specific SRS transmission subframe set.
- slot 0 is the same as that of the normal PUCCH format 3 illustrated in FIGS. 29 to 31.
- the last SC-FDMA symbol of slot 1 is not used for PUCCH transmission to protect the SRS transmission.
- the number of RS symbols in slot 1 is Although the same as two, the number of UCI symbols is reduced from five to four. Therefore, the orthogonal sequence (0CC in black) applied to the UCI symbol in slot 1 decreases in length from 5 to 4.
- an orthogonal sequence (or 0CC) may not be applied to an RS symbol as illustrated in FIG. 29.
- bit block 6 (o) '"X bit -i) a terminal-specific scrambling sequences are scrambled by bit block 6 (o)'"'M bit -i) the code bits of FIG. 2 b _o 9a, b _ 1; ... , B _N— Can stand at one.
- Bit block 6 (0) ' ⁇ ' ⁇ (M bit -i) includes at least one of ACK / NACK bit, CSI bit and SR bit.
- the scrambled bit block ⁇ ) ' ⁇ ⁇ lt -i) can be generated by the following equation.
- x 2 (n + 3l) (x 2 (n + 3) + x 2 (n + 2) + x 2 ( «+ 1) + x 2 (n)) mod2
- N C 1600.
- ⁇ is initialized to ⁇ ( ⁇ + ⁇ . ⁇ ⁇ + ⁇ ). ⁇ , at the beginning of every subframe. Is the slot number in the radio frame, V " is the physical layer cell identity and " RNTI is the radio network temporary identifier.
- the scrambled bit blocks (0), ..., (M blt -l) are modulated, and a complex modulation symbol block ⁇ 0), ..., i (M symb -l) is generated.
- the complex modulation symbol blocks (0), .. ⁇ ( ⁇ symb -l) are the modulation symbols c_0, c_l,... Or c_N-l.
- n wmodN SF0
- 3 ⁇ 4 CCH and ⁇ correspond to the number of SC-FDMA symbols used for PUCCH transmission in slot 0 and slot 1, respectively.
- «° represents an orthogonal sequence index (or an orthogonal code index).
- LJ stands for the flooring function.
- ⁇ is an index based on the antenna port number.
- the resource for PUCCH format 3 is identified by the resource index H.
- H For example, " ⁇ Can be given by May be indicated through a TPC Transmit Power Control) field of the SCell PDCCH. More specifically, may be given by the following equation for each slot.
- Orthogonal sequences of the same index () are used in 0 and slot 1.
- the complex symbol block ⁇ (( ⁇ ⁇ (( ⁇ ⁇ + ⁇ 0 ⁇ -1) is mapped to a physical resource after power control.
- the PUCCH uses one resource block in each slot within a subframe.
- ⁇ (( ⁇ ,... , ⁇ (( ⁇ " ⁇ + ⁇ 1 ⁇ ⁇ -1) is RS Mapped to a resource element on antenna port p, which is not used for transmission (see Table 14). Starting from the first slot of the subframe, the mapping is drawn in order of increasing k, then 1, and later slot numbers.
- k represents a subcarrier index and 1 represents an SC-FDMA symbol index in a slot.
- P represents the number of antenna ports used for PUCCH transmission.
- p represents the antenna port number used for PUCCH transmission and the relationship between and ⁇ is shown in the table below.
- the above-described PUCCH format 3 transmits block spread information at the SC-FDMA symbol level using an orthogonal code.
- the orthogonal performance of the orthogonal code used for block spread may be degraded. This may reduce the multiplexing performance and transmission reliability of the control information.
- Partial orthogonality means orthogonality between some elements of an orthogonal code.
- SC-FDMA intersymbol channels must be static in order to maintain orthogonality between orthogonal codes.
- the channel between the SC-FDMA symbols may change, which may cause partial orthogonality and total orthogonal performance of an orthogonal code.
- the orthogonality between orthogonal codes with distant oc is more robust.
- an impulse answer is obtained by performing a correlation operation on the corresponding code (eg, IDFT operation).
- IDFT operation channel ques- tions for each code are represented by a delta function so that orthogonality between codes is guaranteed.
- the channel state becomes an optional channel.
- the channel response for each code is represented by an impulse response according to the multi-path channel as illustrated in FIG. 33. This In this case, as illustrated, overlap may occur between codes close to oc . Therefore, when the channel changes, the greater the inter-code spacing (that is, the larger the difference between « oc ), the more robust orthogonality to the external environment can be maintained.
- SF 5 DFT code
- code distances are defined to evaluate orthogonal performance between orthogonal codes.
- SF 5 and m and n are integers of 0-4.
- floorO represents the rounding function.
- the code distance may be defined in consideration of partial orthogonality.
- the mapping of w oc and orthogonal codes follows the code scheme in Table 15. '
- Table 19 shows the code distances when using the existing code scheme of Table 15.
- Table 19 shows a case where the same code index is used in slot 0 and slot 1 according to Equation (14).
- the present invention will be described a method for randomizing the code distance at the slot level.
- the code index used at slot 0 is referred to as " ⁇ and used at slot 1.
- the code index is referred to as « ocl
- it is given as" 0 (; 0 ⁇ « 0 ( ; 1.
- the index ⁇ « oc, 0 (m) « oc, 1 (m) ⁇ and
- orthogonal code indices can be constructed such that the distance of oc , 1 (n) is large (black is small). By doing so, the orthogonal performance of the spreading code in both slots is reduced when using the Shotton PUCCH format 3 At the same time, it can prevent the lowering.
- the code index of each slot may be given by Equation 14.
- oc that is
- mapping of the code index (“ oc, 0 ) and orthogonal code in slot 0, or change the mapping of the code index (/ ni and orthogonal code in slot 1).
- Table 21 shows distance values for the configuration of Table 20.
- Table 25 shows the distance values for the configuration in Table 24.
- Table 27 shows the distance values for the configuration of Table 26.
- UL synchronization is determined at the base station using the PRACH preamble transmitted from the terminal.
- the BS informs the UE of a TA Timing Advanced value using the measured timing value.
- the terminal adjusts the UL transmission timing according to the corresponding TA, and as a result, signals from all the terminals can be received at the same timing in terms of the base station.
- 3GPP Rel-8 since the granularity of TA is a multiple of 0.52us, ambiguity occurs within ⁇ 0.52us. Therefore, the 0C design considering this residual timing will be described.
- FIG. 35 shows the orthogonal performance of the cords when the cord configuration shown in Table 28 is used.
- n oc 2 [+1 -1 -1 +1] '
- exchanging 0C e.g. Walsh code
- ⁇ S P F UCCH 4 column only in Table 15
- exchanging 0C e.g DFT code
- the base station and the terminal constitute a plurality of cells (S3602)
- the plurality of cells include one PCell and one or more SCells, and then the terminal transmits uplink control information through the PUCCH (S3604).
- the uplink control information includes at least one of reception response information (eg, ACK / NACK / DTX response), channel state information, and scheduling request information for the downlink signal, wherein the downlink signal is a PDCCH signal or a black PDCCH.
- the PDCCH signal includes a PDCCH (SCell PDCCH) signal transmitted on the SCell.
- the PUCCH includes PUCCH format 3.
- the PUCCH signal transmission process includes a PUCCH resource allocation determination process and a PUCCH signal generation process. PUCCH resource allocation may be made using Equation (14).
- the PUCCH signal generation process may include the process described with reference to FIGS. 29 to 32. Specifically, the PUCCH signal generation process includes the process of block spreading the modulation symbol block at the SC-FDMA symbol level. At this time, orthogonal codes used for block spreading are randomized at the slot level. For example, block spreading may be performed using the code schemes of Tables 20, 22, 24, 26 and 29-35.
- a wireless communication system includes a base station (BS) 110 and a terminal (UE) 120.
- Base station 110 includes a processor 112, a memory 114, and a radio frequency (RF) unit 116.
- Process 112 may be configured to implement the procedures and / or methods proposed in the present invention.
- the memory 114 is connected with the processor 112 and stores various information related to the operation of the processor 112.
- the RF unit 116 is connected with the processor 112 and transmits and / or receives radio signals.
- Terminal 120 includes a processor 122, a memory 124, and an RF unit 126.
- the processor 122 may be configured to implement the procedures and / or methods proposed in the present invention.
- the memory 124 is connected with the processor 122 and stores various information related to the operation of the processor 122.
- the RF unit 126 is connected with the processor 122 and transmits a radio signal And / or receive.
- the base station 110 and / or the terminal 120 may have a single antenna or multiple antennas.
- embodiments of the present invention have been described mainly based on a signal transmission / reception relationship between a terminal and a base station.
- This transmission / reception relationship is extended / similarly to signal transmission / reception between the terminal and the relay or the base station and the relay.
- Certain operations described in this document as being performed by a base station may, in some cases, be performed by an upper node thereof. That is, it is apparent that various operations performed for communication with a terminal in a network including a plurality of network nodes including a base station may be performed by a network station other than a branch station or a base station.
- a base station may be replaced by terms such as a fixed station, a Node B, an eNode B (eNB), an access point, and the like.
- an embodiment of the present invention may include one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), and FPGAs ( field programmable gate arrays), processors, controllers, microcontrollers, microprocessors, and the like.
- ASICs application specific integrated circuits
- DSPs digital signal processors
- DSPDs digital signal processing devices
- PLDs programmable logic devices
- FPGAs field programmable gate arrays
- an embodiment of the present invention may be implemented in the form of modules, procedures, functions, etc. that perform the functions or operations described above.
- the software code may be stored in a memory unit and driven by a processor.
- the memory unit may be located inside or outside the processor, and may exchange data with the processor by various known means.
- the present invention can be used in a terminal, base station, or other equipment of a wireless mobile communication system. Specifically, the present invention provides a method for transmitting uplink control information and It can be applied to the device for.
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US13/513,177 US10021674B2 (en) | 2010-09-08 | 2011-09-07 | Method and device of transmitting control information in a wireless communication system |
CN201180022264.1A CN102884770B (zh) | 2010-09-08 | 2011-09-07 | 在无线通信系统中传送控制信息的方法和设备 |
ES11823768.4T ES2614094T3 (es) | 2010-09-08 | 2011-09-07 | Procedimiento y dispositivo de transmisión de información de control en un sistema de comunicación inalámbrica |
EP11823768.4A EP2615786B1 (en) | 2010-09-08 | 2011-09-07 | Method and device of transmitting control information in a wireless communication system |
JP2013528113A JP5859006B2 (ja) | 2010-09-08 | 2011-09-07 | 無線通信システムにおける制御情報の伝送方法及び装置 |
US16/005,146 US10631278B2 (en) | 2010-09-08 | 2018-06-11 | Method and device of transmitting control information in a wireless communication system |
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US38070710P | 2010-09-08 | 2010-09-08 | |
US61/380,707 | 2010-09-08 | ||
US40519110P | 2010-10-20 | 2010-10-20 | |
US61/405,191 | 2010-10-20 | ||
KR1020110090180A KR101285398B1 (ko) | 2010-09-08 | 2011-09-06 | 무선 통신 시스템에서 제어 정보의 전송 방법 및 장치 |
KR10-2011-0090180 | 2011-09-06 |
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US13/513,177 A-371-Of-International US10021674B2 (en) | 2010-09-08 | 2011-09-07 | Method and device of transmitting control information in a wireless communication system |
US16/005,146 Continuation US10631278B2 (en) | 2010-09-08 | 2018-06-11 | Method and device of transmitting control information in a wireless communication system |
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WO2012033335A2 true WO2012033335A2 (ko) | 2012-03-15 |
WO2012033335A3 WO2012033335A3 (ko) | 2012-05-24 |
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PCT/KR2011/006610 WO2012033335A2 (ko) | 2010-09-08 | 2011-09-07 | 무선 통신 시스템에서 제어 정보의 전송 방법 및 장치 |
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US (2) | US10021674B2 (ko) |
EP (2) | EP3032793B1 (ko) |
JP (1) | JP5859006B2 (ko) |
KR (1) | KR101285398B1 (ko) |
CN (1) | CN102884770B (ko) |
ES (1) | ES2614094T3 (ko) |
WO (1) | WO2012033335A2 (ko) |
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2011
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- 2011-09-07 WO PCT/KR2011/006610 patent/WO2012033335A2/ko active Application Filing
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Cited By (3)
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WO2015005739A1 (ko) * | 2013-07-11 | 2015-01-15 | 주식회사 팬택 | 무선 통신 시스템에서 참조 신호를 전송하는 방법 및 장치 |
KR20150007594A (ko) * | 2013-07-11 | 2015-01-21 | 주식회사 팬택 | 무선 통신 시스템에서 참조 신호를 전송하는 방법 및 장치 |
KR102094419B1 (ko) | 2013-07-11 | 2020-03-27 | 주식회사 팬택 | 무선 통신 시스템에서 참조 신호를 전송하는 방법 및 장치 |
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US20180338302A1 (en) | 2018-11-22 |
US10631278B2 (en) | 2020-04-21 |
JP5859006B2 (ja) | 2016-02-10 |
US10021674B2 (en) | 2018-07-10 |
EP2615786A4 (en) | 2015-12-09 |
CN102884770B (zh) | 2015-09-23 |
EP2615786B1 (en) | 2016-11-02 |
KR20120025994A (ko) | 2012-03-16 |
EP2615786A2 (en) | 2013-07-17 |
ES2614094T3 (es) | 2017-05-29 |
EP3032793A1 (en) | 2016-06-15 |
CN102884770A (zh) | 2013-01-16 |
US20130294353A1 (en) | 2013-11-07 |
JP2013538018A (ja) | 2013-10-07 |
KR101285398B1 (ko) | 2013-07-10 |
WO2012033335A3 (ko) | 2012-05-24 |
EP3032793B1 (en) | 2017-11-08 |
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