WO2012169859A2 - 제어 정보를 전송하는 방법 및 이를 위한 장치 - Google Patents
제어 정보를 전송하는 방법 및 이를 위한 장치 Download PDFInfo
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- WO2012169859A2 WO2012169859A2 PCT/KR2012/004598 KR2012004598W WO2012169859A2 WO 2012169859 A2 WO2012169859 A2 WO 2012169859A2 KR 2012004598 W KR2012004598 W KR 2012004598W WO 2012169859 A2 WO2012169859 A2 WO 2012169859A2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
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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
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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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
- H04L1/0001—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
- H04L1/0026—Transmission of channel quality indication
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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
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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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
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0067—Rate matching
- H04L1/0068—Rate matching by puncturing
-
- 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
- H04L1/1621—Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers
-
- 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
- H04L1/1664—Details of the supervisory signal the supervisory signal being transmitted together with payload signals; piggybacking
-
- 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
- H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
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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) or DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
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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 signalling, 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
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
Definitions
- the present invention relates to a wireless communication system, and more particularly, to a method for transmitting control information and an apparatus therefor.
- 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 frequency (SC to FDMA). division multiple access) system.
- CDMA code division multiple access
- FDMA frequency division multiple access
- TDMA time division multiple access
- OFDMA orthogonal frequency division multiple access
- SC to FDMA single carrier frequency division multiple access
- 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. Another object of the present invention is to provide a method and apparatus for efficiently transmitting uplink control information (eg, channel state information) in a system in which a plurality of carriers or cells are merged and efficiently managing resources therefor. It is in the air.
- uplink control information eg, channel state information
- a method for reporting CSKChannel State Information in a wireless communication system supporting carrier aggregation comprising: configuring a plurality of DL CCCDownlink Component Carriers; Setting the CSI reporting mode for each of the plurality of DL CCs (for each X; and performing an operation for transmitting the CSI according to the CSI reporting mode configured for each DLCC;
- Q CSIs of the P CSIs are transmitted through one physical channel, and when the P CSIs overlap and satisfy the second condition in the same subframe, Only R CSIs of P CSIs are transmitted through a second physical channel different from the first physical channel, where R is smaller than Q.
- a communication device configured to report CSKChannel State Information in a wireless communication system supporting carrier aggregation, comprising: a radio frequency (RF) unit; And a processor, wherein the processor configures a plurality of DL CCCDownlink Component Carriers, sets the CSI reporting mode for the plurality of DL CCs for each CC, and sets the CSI reporting mode for each DL CC.
- RF radio frequency
- the processor configures a plurality of DL CCCDownlink Component Carriers, sets the CSI reporting mode for the plurality of DL CCs for each CC, and sets the CSI reporting mode for each DL CC.
- a communication device is provided, wherein R is less than Q.
- said first condition includes that P is greater than or equal to M
- said second condition includes that P is less than M
- P is equal to Q
- M is concurrently transmitted on said first physical channel. Is the minimum number of CSIs allowed.
- the first condition includes that P is greater than L
- the second condition includes that P is less than M
- P is greater than Q
- Q is equal to L
- L is The maximum number of CSIs allowed for simultaneous transmission in the first physical channel
- M is the minimum number of CSIs allowed for simultaneous transmission in the first physical channel.
- the first condition includes that the sum of sizes of the P CSIs is equal to or greater than M
- the second condition includes that the sum of the sizes of the P CSIs is less than M
- P is equal to Q
- R Denotes the number of CSIs having the highest priority among the P CSIs and the size sum of the CSIs being the largest integer less than or equal to S
- M is the minimum size of the CSIs allowed for simultaneous transmission in the first physical channel.
- S is an integer less than M determined by the capacity of the second physical channel.
- the first condition includes the sum of the sizes of the P CSIs greater than L
- the second condition includes the sum of the sizes of the P CSIs less than M
- P is greater than Q
- Q Denotes the number of CSIs having the highest priority among the P CSIs
- the size sum of the CSIs being the largest integer less than or equal to L
- R is the highest priority among the P CSIs
- the size sum of the CSIs is S CSI to be the largest integer
- L represents the number of simultaneous transmission severity in the first physical channel
- I is the sinusoidal size of the CSI
- M is the minimum size of the CSI allowed for simultaneous transmission in the first physical channel
- S is the first 2 An integer less than M, determined by the capacity of the physical channel.
- control information can be efficiently transmitted in a wireless communication system. Specifically, uplink control information in a system in which a plurality of carriers or cells are merged
- FIG. 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.
- FIG. 2 illustrates a structure of a radio frame.
- FIG. 3 illustrates a resource grid of a downlink slot.
- 5 illustrates a structure of an uplink subframe.
- 6 shows a slot level structure of PUCCH format 1 / la / lb.
- 8 to 11 illustrate periodic reporting of channel state information for a single carrier or cell.
- CA 12 illustrates a Carrier Aggregation (CA) communication system.
- 13 illustrates cross-carrier scheduling.
- FIG. 16 illustrates a CSI reporting process according to an existing method when a plurality of carriers or cells are merged.
- FIG. 17 illustrates an embodiment of the present invention when a plurality of carriers or cells are merged.
- FIG. 18 illustrates a base station and a terminal that can be applied to an embodiment in the present invention.
- CDMA code division multiple access
- FDMA frequency division multiple access
- TDMA time division mult iple access
- OFDMA t hogona 1 frequency division mult iple access
- SC-FDMA single carrier frequency division multiple access
- TDMA supports Global System for Mobile communication (GSM) / Gener a 1 Packet Radio Service (GPRS) / Enhanced Data Rates for GSM and GPRS.
- GSM Global System for Mobile communication
- GPRS Packet Radio Service
- 0FDMA supports IEEE 802.11 (Wi-Fi), Wireless technologies such as IEEE 802.16 (WiMAX), IEEE 802-20, and E-UTRA (Evolved UTRA) can be implemented.
- UTRA is part of UMTS Jniversal Mobile Telecommunications System.
- the 3rd Generation Partnership Project (3GPP) LTE term term evolution (3GPP) employs 0-FDMA in downlink and SC-FDMA in uplink as part of an Evolved UMTS (E-UMTS) using E-UTRA.
- LTE-A Advanced is an evolution of 3GPP LTE.
- a terminal receives information through a downlink (DL) from a base station, and the terminal transmits 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 (-A) system and a general signal transmission method using the same.
- the initial cell search operation such as synchronizing with the base station is performed in step Sl () l.
- the terminal may transmit a primary synchronization channel
- the terminal Receives a Synchronizat ion Channel (P-SCH) and a Secondary Synchronization Channel (S-SCH) to synchronize with the base station, and acquires information such as a cell ID. After that, the terminal establishes a physical broadcast channel from the base station. And receive broadcast information in a cell. On the other hand, 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 the physical downlink control channel (PDCCH) and the physical downlink control channel (PDSCH) according to the physical downlink control channel information in step S102. Specific system information can be obtained.
- PDCCH physical downlink control channel
- PDSCH physical downlink control channel
- the terminal follows step S103 to complete access to the base station.
- Random access procedure such as S106 can be performed.
- the UE transmits a preamble through a physical random access channel (PRACH) (S103), and receives a voice response message for the preamble through a physical downlink control channel and a physical downlink shared channel. It may be (S104).
- PRACH physical random access channel
- S105 additional physical random access channel
- S106 reception of physical downlink control channel and physical downlink shared channel
- the UE After performing the procedure as described above, the UE performs a physical downlink control channel / physical downlink shared channel reception (S107) and a physical uplink shared channel as a general uplink / downlink signal transmission procedure.
- S107 physical downlink control channel / physical downlink shared channel reception
- S107 physical uplink shared channel
- UCI Physical Uplink Control Channel
- the control information transmitted from the terminal to the base station is collectively referred to as uplink control information (UCI).
- UCI is HARQ ACK / NACK (Hybrid Automatic Repeat reQuest Acknowledgement / Negat ive-ACK), SRCS scheduling request (CSI), and Channel Status Information (CSI).
- CSI includes Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), RKRank Indication (RQank), and the like.
- CQI Channel Quality Indicator
- PMI Precoding Matrix Indicator
- RQank RKRank Indication
- 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.
- the UCI may be transmitted aperiodically on the PUSCH by a request / instruction of the network.
- a radio frame includes a plurality of subframes, and one subframe includes a plurality of OFDM or SO FDMA symbols.
- the 3GPPLTE (-A) standard is a type 1 radio frame structure for frequency division duplex (FDD).
- 2 (a) illustrates the structure of a type 1 radio frame.
- the downlink radio frame consists of 10 subframes, and one subframe consists of two slots in the time domain. For example, one subframe may have a length of 1 ms, and one slot may have a length of 0.5 ms.
- One slot includes a plurality of OFDM symbols or a plurality of SC—FDMA symbols in the time domain and includes a plurality of resource blocks (RBs) in the frequency domain.
- the 3GPP LTE (-A) system uses 0FDMA in downlink and SC-FDMA in uplink.
- Type 2 radio frames consist of two half frames, and each half frame consists of four normal subframes and one special subframe. Special subframe
- DwPTS Downlink Pilot Time Slot
- GP Guard Period
- UpPTS Uplink Pilot Time Slot
- DwPTS is used for initial cell search, synchronization, or channel estimation in a terminal.
- UpPTS is used for channel estimation at the base station and synchronization of uplink transmission of the terminal.
- the guard interval provides the switching time between UL transmission and DL transmission.
- Each normal subframe in a radio frame is used for UL transmission or DL transmission according to the UL-Downlink Configuration.
- FIG. 3 illustrates a resource grid of a downlink slot.
- the structure of the uplink slot is the same as that of the downlink slot, but the OFDM symbol is replaced by the SC ⁇ FDMA symbol.
- the downlink slot includes a plurality of OFDM symbols in the time domain.
- the downlink slot may include 7 (6) OFDM symbols and the RB may include 12 subcarriers in the frequency domain.
- Each element on the resource grid is referred to as a resource element (RE).
- RB contains 12X7 (6) REs.
- the number N RBs of the RBs included in the downlink slot depends on the downlink transmission band.
- FIG. 4 illustrates a structure of a downlink subframe.
- At most three (4) 0FOM symbols located in the first slot of a subframe correspond to a control region to which a control channel is allocated.
- the downlink control channel used in LTE includes physical control format indicator channel (PCFICH) and physical downlink (PDCCH).
- PCFICH physical control format indicator channel
- PDCH physical downlink
- PHICH Physical Hybrid ARQ indicator Channel
- the PCFICH is transmitted in the first OFDM symbol of a subframe and carries information on the number of OFDM symbols used for transmission of a control channel within the subframe.
- PHICH is a HARQ ACK / NACK (Hybrid Automatic Repeat reQuest) in response to uplink transmission. Acknowledgment / negative Carries an acknowledgment signal.
- 5 illustrates a structure of an uplink subframe used in LTE.
- an uplink subframe includes a plurality of slots (eg, two). Slots may contain different numbers of SC-FDMA symbols depending on the length of the CP Cyclic Prefix.
- the uplink subframe is divided into a data region and a control region in the frequency domain.
- the data area includes a PUSCH and is used to transmit a data signal such as voice.
- the control region includes a PUCCH and is used to transmit uplink control information (UCI).
- the PUCCH includes RB pairs located at both ends of the data region on the frequency axis and hops to a slot boundary.
- PUCCH may be used to transmit the following control information.
- SRCScheduling Request Information used for requesting an uplink UL-SCH resource. It is transmitted using 00K (0n-0ff Keying) method.
- HARQ ACK / NACK This is a voice response signal for a downlink data packet on a PDSCH. Indicates whether the downlink data packet was successfully received. One bit of ACK / NACK is transmitted in response to a single downlink codeword (Codeword, CW), and two bits of ACK / NACK are transmitted in response to two downlink codewords.
- the CSI includes a Channel Quality Indicator (CQI), a RKRank Indicator (PMQ), a PMKPrecoding Matrix Indicator), and a PTKPrecoding Type Indicator. 20 bits are transmitted per subframe.
- CQI Channel Quality Indicator
- PMQ RKRank Indicator
- PMKPrecoding Matrix Indicator PMKPrecoding Matrix Indicator
- PTKPrecoding Type Indicator 20 bits are transmitted per subframe.
- the amount of control information (UCI) that a UE can transmit in a subframe depends on the number of SC-FDMA available for transmission of control information.
- SC—FDMA available for transmission of control information means the remaining SC-FDMA symbol except for the SC-FDMA symbol for transmitting the reference signal in the subframe, and in the case of the subframe in which the Sounding Reference Signal (SRS) is set, SC-FDMA symbols are also excluded.
- the reference signal is used for coherent detection of the PUCCH.
- PUCCH supports seven formats according to the transmitted information.
- Table 1 shows the mapping relationship between the PUCCH format and UCI in LTE (-A).
- the LTE terminal cannot transmit the PUCCH and the PUSCH at the same time, when UCI (eg, CQI / PMI, HARQ-ACK, RI, etc.) transmission is required in the subframe in which the PUSCH is transmitted, the UCI is multiplexed in the PUSCH region.
- the UE when HARQ-ACK needs to be transmitted in a subframe to which PUSCH transmission is allocated, the UE multiplexes UL-SCH data and HARQ—ACK before DFT-spreading, and then transmits control information and data together through the PUSCH.
- do. 6 is a 1 displayed a slot-level structure of the PUCCH format 1 / la / lb.
- PUCCH format 1 ⁇ SR transmission PUCCH format la / lb is used for ACK / NACK transmission.
- SC-FDMA # 2 / # 3 / # 4 is used for DM RS (Demodulation Reference Signal) transmission.
- SOFDMA # 2 / # 3 is used for DM RS transmission.
- 1-bit and 2-bit ACK / NACK information is respectively represented by a binary phase.
- PUCCH format la / lb is subjected to cyclic shift (CS) (a cs , x ) in the frequency domain, and orthogonal spreading code (eg Walsh-Hadamard or DFT code) in the time domain ( 0 ,, ⁇ 3 ⁇ 4 , Is applied. Since code multiplexing is used in both frequency and time domain, more terminals can be multiplexed on the same PUCCH RB.
- CS cyclic shift
- orthogonal spreading code eg Walsh-Hadamard or DFT code
- the RS transmitted from different terminals is multiplexed using the same method as UCI.
- the number of cyclic shifts supported in the SOFDMA symbol for the PUCCH ACK / NACK RB may be configured by the cell-specific higher layer signaling parameter Ashift .
- Ashift? U, 2, 3 ⁇ indicates that the shift values are 12, 6, and 4, respectively.
- the number of spreading codes that can actually be used for ACK / NACK in time-domain CDM code division multiplexing may be limited by the number of RS symbols. This is because the multiplexing capacity of the RS symbol is smaller than the multiplexing capacity of the UCI symbol due to the small number of RS symbols.
- 7 shows a slot level structure of the PUCCH format 2 / 2a / 2b.
- PUCCH format 2 / 2a / 2b is used for CSI transmission.
- CSI includes CQI, PMI, RI and the like.
- SC-FDMA # 1 and # 5 are used for DM RS transmission in a slot.
- SC-FDMA # 3 is used for DM RS transmission in a slot.
- 10-bit CSI information is channel coded into 20 coded bits using a rate 1/2 punctured (20, k) Reed-Muller code (not shown). The coding bits are then scrambled (not shown) and mapped to QPSK constellations (QPSK modulation).
- Scrambling may be performed using a length ⁇ 31 gold sequence similarly to the case of PUSCH data.
- Ten QPSK modulation symbols are generated and five QPSK modulation symbols (d ( ⁇ d 4 ) in each slot are transmitted through corresponding SC-FDMA symbols.
- Each QPSK modulation symbol is transmitted before the Inverse Fast Fourier Transform (IFFT). It is used to modulate the base RS sequence (r u, 0 ) of length -12.
- IFFT Inverse Fast Fourier Transform
- N terminals may be multiplexed on the same CSI PUCCH RB.
- 8-11 illustrate periodic reporting of channel state information in LTE. That is, it illustrates periodic reporting of channel state information for a single carrier or cell.
- the parameter / resource for periodic reporting of CSI (eg CQI) is configured semi-static by higher layer (eg Radio Resource Control (RRC)) signaling. For example, before CSI
- the CSI sets the PUCCH resource index. "CSI is periodically transmitted on the CSI PUCCH linked with the PUCCH. PUCCH Resource Index" CCH
- the CQI reporting mode is divided into wideband (WB) CQI and subband (SubBand, SB) CQI according to the CQI feedback type, and a single PMI no (No PMI) according to whether PMI is transmitted or not.
- WB wideband
- SubBand, SB subband
- No PMI single PMI no
- Each UE receives information consisting of a combination of a period and an offset to periodically report the CQI through RRC signaling.
- FIG. 9 shows an example of transmitting channel state information when the terminal is signaled with information indicating ⁇ period '5', offset '1' ⁇ .
- the UE when the period is '5' and the information indicating the offset '1' is received, the UE is offset in units of five subframes with an offset of one subframe in the incremental direction of the subframe index from the 0th subframe.
- the channel state information is basically transmitted through the PUCCH, but if there is a PUSCH for data transmission at the same time, the channel state information is
- the subframe index is composed of a system frame number (n f ) and a slot index (n s , 0 to 19). Since the subframe consists of two slots, the subframe index may be defined as 10 * n f + floor (n s / 2). floorO represents the rounding function.
- the type of transmitting only WB CQI transmits CQI information for the entire band in a subframe corresponding to every CQI transmission period.
- the PMI feedback type as shown in FIG.
- WB CQI and SB For the type that carries both CQIs, WB CQI and SB CQI are different. 10 illustrates a system in which the system band consists of 16 RBs.
- the system band is composed of two bandwidth parts (BP) (BPO, BPl), each BP is composed of two subbands (SBO, SB1), and each SB is four RBs.
- BP bandwidth parts
- SBO subbands
- SB subbands
- each SB is four RBs.
- the number of BPs and the size of each SB may vary according to the size of a system band.
- the number of SBs constituting each BP may vary according to the number of RBs, the number of BPs, and the size of SBs.
- the WB CQI is transmitted in the first CQI transmission subframe, and the CQI for the SB having a good channel state among SB0 and SB1 belonging to BP0 and the corresponding CQI transmission subframe. Send the index of the SB.
- the CQI for the SB having a good channel state among the SB0 and SB1 belonging to BP1 and the index of the corresponding SB are transmitted.
- the CQI information for each BP is sequentially transmitted.
- CQI information for each BP may be sequentially transmitted 1 to 4 times between two WB CQIs.
- Information on how many times each BP CQI will be sequentially transmitted is signaled by a higher layer (eg, RRC layer).
- FIG. 11 (a) shows that the terminal has received information indicating ⁇ period '5', offset '1' ⁇
- the CQI may be transmitted only in a subframe corresponding to the signaled period and offset regardless of the type.
- FIG. 11 (b) shows a case in which RI is additionally transmitted in the case of FIG. 11 (a).
- the RI may be signaled from a higher layer (e.g., RRC layer) in a combination of how many times the WB CQI transmission period is transmitted and the offset in the transmission period.
- the offset of the RI is signaled as a value relative to the offset of the CQI.
- the RI has the same offset as the CQI.
- the offset of RI is defined as 0 and a negative value.
- FIG. 11 (b) assumes that the RI transmission period is one times the WB CQI transmission period and the RI offset is in the same environment as that of FIG. 11 (a). Since the transmission period of the RI is 1 times the transmission period of the WB CQI, the transmission period of the channel state information is substantially the same. Since RI is an offset, RI is transmitted based on the offset '1' of the CQI (ie, subframe 0) in FIG. 11 (a). If the offset of the RI is '0', the WB CQI and the transmission subframes of the RI overlap, and in this case, the WB CQI is dropped and the RI is transmitted.
- CA 12 illustrates a Carrier Aggregation (CA) communication system.
- the LTE-A system collects a plurality of UL / DL frequency blocks to use a wider frequency band and uses a carrier aggregation or bandwidth aggregation technique that uses a larger UL / DL bandwidth.
- Each frequency block is transmitted using a component carrier (CC).
- the component carrier may be understood as the carrier frequency (or center carrier, center frequency) for the corresponding frequency block.
- a plurality of UL / DL component carriers Can be collected to support wider UL / DL bandwidth.
- CCs may be adjacent to each other or non-adjacent in frequency 3 ⁇ 4.
- the bandwidth of each CC can be determined independently. It is also possible to merge asymmetric carriers in which the number of UL CCs and the number of DL CCs are different. For example, when two DL CCs have one UL CC, the configuration may be configured to be 2: 1.
- DL CC / UL CC links may be fixed to the system or configured semi-statically.
- the frequency band that can be monitored / received by a specific terminal may be limited to M ( ⁇ N) CCs.
- the control information may be set to be transmitted and received only through a specific CC.
- This particular CC may be referred to as a primary CCXPrimary CC, PCC (or anchor CC), and the remaining CC may be referred to as a secondary CCX Secondary CC (SCC).
- LTE-A uses the concept of a cell to manage radio resources.
- a cell is defined as a combination of downlink and uplink resources. 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.
- a cell operating on the primary frequency (or PCC) may be referred to as a primary cell (PCell), and a cell operating on the secondary frequency (or SCO) may be referred to as a secondary cell (SCell).
- PCell primary cell
- SCell secondary cell
- the terminal is used to perform an initial connection establishment process or to perform a connection reestablishment procedure
- the PCell may refer to a cell indicated in the handover process. Later on it is configurable and can be used to provide additional radio resources PCell and SCell collectively as serving cells Can be. Therefore, in the UE that is in the RRC_CONNECTED state but the carrier aggregation is not set or the carrier aggregation does not support, there is only one serving cell configured only with the PCell. On the other hand, in the case of the UE in the RRC_CONNECTED state and the carrier aggregation is configured, one or more serving cells exist, and the entire serving cell includes 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 the UE supporting carrier aggregation in addition to the PCell initially configured in the connection establishment process.
- the PDCCH for downlink allocation may be transmitted on DL CC # 0, and the corresponding PDSCH may be transmitted on DL CC # 2.
- the introduction of a carrier indicator field (CIF) may be considered.
- the presence or absence of the CIF in the PDCCH may be set in a semi-static and terminal-specific (or terminal group-specific) manner by higher layer signaling (eg, RRC signaling).
- RRC signaling eg, RRC signaling
- PDCCH on DL CC allocates PDSCH resources on the same DL CC or PUSCH resources on one linked UL CC
- PDCCH on DL CC can allocate PDSCH or PUSCH resource on specific DL / UL CC among a plurality of merged DL / UL CCs using CIF
- the base station can allocate the PDCCH monitoring DL CC set to reduce the BD complexity of the terminal.
- the PDCCH monitoring DL CC set includes one or more DL CCs as part of the merged total DL CCs, and the UE performs detection / decoding of the PDCCH only on the corresponding DL CCs. That is, when the base station schedules the PDSCH / PUSCH to the terminal, The PDCCH is transmitted only through the PDCCH monitoring DL CC set.
- DL CC A-C may be referred to as a serving CC, a serving carrier, a serving cell, and the like.
- each DL CC can transmit only PDCCH scheduling its PDSCH without CIF according to the LTE PDCCH rule.
- the DL CC A (monitoring DL CC) can transmit not only the PDCCH scheduling the PDSCH of the DL CC A but also the PDCCH scheduling the PDSCH of another CC using the CIF. In this case, PDCCH is not transmitted in DL CC B / C that is not configured as PDCCH monitoring DL CC.
- Enhanced PUCCH format ie, PUCCH format 3
- PUCCH format 3 a new type of improved PUCCH format (Enhanced PUCCH format, E—PUCCH format) (ie, PUCCH format 3) has been introduced for a larger amount of ACK / NACK transmission.
- E-PUCCH format (ie PUCCH format 3) at the slot level.
- the plurality of ACK / NACK information is transmitted through joint coding (eg, Reed-Muller code, Tail-biting convolutional code, etc.), block spreading, and SC-FDMA modulation.
- one symbol sequence is transmitted over a frequency domain, and OCCCOrthogonal Cover Code (OCC) based time-domain spreading is applied to the symbol sequence.
- Control signals of multiple terminals may be multiplexed on the same RB using 0CC.
- a symbol ie, a UCI data part
- the symbol sequence ( ⁇ dl, d2, '" ⁇ ) may mean a modulation symbol sequence or a codeword bit sequence.
- Symbol sequence ( ⁇ dl, d2, ⁇ ) Means a codeword bit sequence
- the block diagram of Fig. 9 further includes a modulation block, although the figure shows the case where two RS symbols (ie RS parts) are used during one slot,
- RS symbols are generated from Constant Amplitude Zero Autocorrelation Sequences (CAZAC) sequences with specific cyclic shifts.
- CAZAC Constant Amplitude Zero Autocorrelation Sequences
- the RS may be multiplied with a specific 0CC applied to multiple RS symbols in the time domain. Can be sent.
- the symbol sequence in the slot 0 ( ⁇ 0 ⁇ ⁇ '11 ⁇ ) is a SC-FDMA are mapped to sub-carriers of the symbol, 0CC (C1-C5) block with - or 5 by diffusion SC-FDMA Mapped to a symbol.
- a symbol sequence ( ⁇ 12-23 ⁇ ) in slot 1 is mapped to a subcarrier of one SC-FDMA symbol and mapped to five SC-FDMA symbols by block-spreading using 0CC (C1 to C5). do.
- the symbol sequence ( ⁇ 0 to ⁇ or ⁇ / ⁇ 2 to ⁇ 23 ⁇ ) shown in each slot is FFT or FFT / IFFT to the symbol sequence ( ⁇ (11, (12, ...)) of FIG. 10. shows an applied form.
- symbols mwonseu ( ⁇ / '0 ⁇ ⁇ ' 11 ⁇ or ⁇ 12 to '23 ⁇ ) form is applied to the FFT thimble sequence of Figure 9 ( ⁇ dl, 02, ⁇ ⁇ ) , ⁇ / '0 ⁇ ⁇ / ' 11 ⁇ or ⁇ 12 ⁇
- 23 ⁇ is applied to the IFFT are added to the total symbol sequence ( ⁇ / 0 ⁇ ⁇ 23 ⁇ ) to the SC-FDMA generated when the one Join more than UCI
- the first half ('O i ll ⁇ ) is transmitted through slot 0 and the second half ( ⁇ / ' ⁇ ⁇ / ' ⁇ ) is transmitted through slot 1.
- the OCC may be changed in slot units, and the UCI
- LTE-A supports merging of multiple CCs (or cells) (see FIG. 13) (S1602), and independently of the periodic CSI reporting mode for each CC (for example, according to a transmission mode). Can be set (S1604).
- the CSI reporting subframes overlap in multiple CCs (S1606), regardless of whether they are transmitted using the PUCCH format 2 / 2a / 2b or piggybacked using the PUSCH, the corresponding multiple frames may be transmitted through the corresponding subframe. Only CSI for a specific one of the CCs is transmitted, and all CSIs for the remaining CC (s) are dropped (S1608).
- One CSI to be transmitted (or one CC to be CSI transmitted) may be determined through Step 1 or Step 2 below.
- Step 1) If only one CSI (CC) with the highest CSI type priority is transmitted, only the corresponding CSI (for CC) is transmitted.
- Step 2 When the CSI (CC) having the highest CSI type priority is plural, only the CSI for the CC having the lowest ServCelllndex among the plurality of CCs is transmitted.
- the CSI type is given as follows, and the priority is CSI type 3, 5, 6, 2a.
- Type 1 report supports CQI feedback for the UE selected sub-bands
- Type la report supports subband CQI and second PMI feedback
- Type 2b, and Type 2c report supports wideband CQI and PMI feedback
- Type 2a report supports wideband PMI feedback
- Type 3 report supports RI feedback
- Type 5 report supports RI and wideband PMI feedback
- Type 6 report supports RI and PTI feedback
- CSI transmissions do not overlap in two or more CCs (that is, when only CSI transmission for one CC is required in a corresponding subframe), CSI for the CC is transmitted through the corresponding subframe ( S1610).
- a method of simultaneously transmitting a plurality of CSIs for multiple CCs using a UL channel / format capable of supporting a payload of a relatively larger size than the conventional PUCCH format 2 / 2a / 2b may be considered.
- the UL channel / format for multiple CSI transmissions is referred to as UL channel / format X.
- the UL channel / format X may be a PUSCH or PUCCH format 3 or a new UL channel / format similar to PUSCH or PUCCH format 3. Unless specifically stated otherwise below, the UL channel / format X may be commonly used with PUSCH or PUCCH format 3.
- UL channel Resources for / Format X may be pre-allocated to higher layer signaling (eg, RRC Sig 3 ⁇ 43 ⁇ 4) capabilities.
- the CSI transmission is performed unconditionally using UL channel / format X (eg, PUSCH or PUCCH format 3 for multiple CSI transmission). Resource use may be less efficient.
- a plurality of CSIs may be based on PUSCH or PUCCH format 3 (simply, PUSCH or PUCCHF3).
- a method of performing simultaneous transmission of multiple CSIs to a CC is proposed.
- the priority according to the CSI type used hereinafter is CSI type 3, 5, 6, 2a (ie, 1 st CSI type)> CSI type 2, 2b, 2c, 4 as described with reference to FIG. (Ie, 2 nd CSI type)> CSI type 1, la (ie, 3 rd CSI type).
- the CSI type and CSI priority according to the present invention may vary depending on a communication environment.
- the CSI type and thus CSI priority applied to the present invention may also include a CSI type for a specific use such as, for example, CoMP (Cooperative Multi-Point) CSI feedback, and a corresponding CSI priority. Can be.
- CoMP Cooperative Multi-Point
- Method 1 Limit the number of simultaneous CSIs (number of CCs to which CSI is transmitted)
- the minimum number of CSI (CC) that can be transmitted using PUSCH or PUCCHF3 may be limited to M.
- Ncsi ⁇ 3 ⁇ 41 the last CSI transmitted under that condition is called "CSI 1-1"
- the maximum number of CSI (CC) that can be transmitted using PUSCH or PUCCHF3 may be limited to L.
- the following behavior can be defined according to N cs ⁇ .
- the two schemes may be combined to limit the minimum and maximum CSI (CC) numbers that can be transmitted in PUSCH or PUCCHF3 to M and L, respectively.
- CC minimum and maximum CSI
- the parameters M and L values may be transmitted in a UE-common or UE-specific manner through broadcast or LKLayer D / L2 (Layer 2) / RRC (Radio Resource Control) signaling. Can be set.
- LKLayer D / L2 Layer 2
- RRC Radio Resource Control
- the above description illustrates a case of performing CSI transmission using two types of physical channels.
- the PUCCH format depends on the number of CSI CCs.
- the minimum number of CSI bits that can be transmitted using PUSCH or PUCCHF3 may be limited to K.
- ⁇ 3 ⁇ 4 to be transmitted using PUSCH or PUCCHF3 may limit the number of sinusoidal CSI bits to H.
- the following operation can be defined according to 0 CS ⁇ .
- Step 1 or 2 Based on Step 1 or 2, transmit only Y CSIs (for CC) using PUSCH or PUCCHF3 with the highest priority and the sum of the number of CSI bits being the largest integer less than or equal to H
- the two schemes may be combined to limit the minimum and maximum number of CSI bits that can be transmitted in PUSCH or PUCCHF3 to K and H, respectively.
- the following behavior can be defined.
- Steps 1 or 2 Based on Steps 1 or 2, transmit only X CSIs (for CC) using PUCCH format 2 / 2a / 2b with the highest priority and the total number of CSI bits being the maximum integer of 11 or less, or drop all CSIs (In this case, separate PUCCH format 2 / 2a / 2b allocation may not be required)
- the parameter K and H values may be set in a terminal-common or terminal-specific manner through broadcast or L1 / L2 / RRC signaling.
- Step 2 one CSI (CC) to be transmitted last is determined based on the lowest ServCel 1 Index ⁇ among the multiple CSIs with the highest CSI type priority. Therefore, for a CC with a relatively high ServCelllndex ⁇ , there is a possibility that the CSI loss is increased even though the CSI type priority is high. Therefore, in this method, as in the case where Step 2 is applied, only when there are a plurality of CSIs (CCs) having the highest CSI type priority in the CSI reporting subframe, a plurality of CSIs (of a plurality of CCs) are set to PUSCH or PUCCHF3. It is suggested to use simultaneous transmission. If there is one CSI (CC) having the highest CSI type priority in the CSI reporting subframe, only the corresponding CSI (for CC) can be transmitted using PUCCH format 2 / 2a / 2b.
- Step 1 Only one CSI (for CC) determined based on / 2 may be transmitted using PUCCH format 2 / 2a / 2b.
- I st in a CSI reporting subframe CSI type of CSI is used, if a plurality of CSI or 2 nd type of CSI (CC) 7 ⁇ means roasting 3 ⁇ 4 the seat the plurality CSI (a plurality CC) only when the highest priority - ⁇ - PUSCH or PUCCHF3
- only one CSI (for CC) determined based on Step 1/2 may be transmitted using PUCCH format 2 / 2a / 2b.
- Method 4 configure UL channel / format for CSI reporting by CC
- This method proposes to independently set the UL channel / format used for CSI reporting for each CC for each CC. Specifically, whether to transmit the CSI for the CC using the PUSCH or PUCCHF 3 all for each CC or PUCCH format 2 / 2a / 2b can be independently set through the RRC signaling.
- a CC group which is a CSI transmission target based on PUSCH or PUCCHF3 is referred to as "CSI group # 1" for convenience.
- CSI group # 2 a CC group targeted for CSI transmission based on PUCCH format 2 / 2a / 2b.
- the base station considers the similarity of the CSI feedback mode between the CC merged by the terminal, the similarity of the CSI transmission period (eg, period, offset), the CSI protection priority between CCs, etc.
- a wasteful use of PUSCH or PUCCHF3 that requires a relatively large amount of resource consumption (e.g., an unnecessarily large size of PUSCH or PUCCHF3 is used even though only CSI transmission for one CC is required). You can lower the frequency.
- CS1 for the corresponding CC monolith may be transmitted on PUSCH or PUCCHF3.
- CS1 for the corresponding CC monolith may be transmitted on PUSCH or PUCCHF3.
- one CC determined based on Step 1/2 of the CC (s) is required. Only CSI may be transmitted through PUCCH format 2 / 2a / 2b.
- CSI transmission is required for one or more CC (s) belonging to CSI group # 1 and one or more CC (s) belonging to CSI group # 2 in a specific subframe at the same time, Can be considered.
- Al t 1 may be useful in terms of reducing channel information shortage and scheduling constraints by reducing possible CSI drops.
- Al t 2 or 3 reduces the CSI drop and simultaneously suppresses a sudden increase in the code rate of PUSCH or PUCCHF3. It may be useful in terms of CSI transmission performance.
- Alt 4 or 5 can be useful in terms of resource use efficiency, as well as the CSi subsidiary group rule 1, and at the same time reduce the frequency of use of PUSCH or PUCCHF3.
- Method 5 Simultaneous Transmission Method According to Presence of IL Data
- the PUSCH means a channel pre-allocated for multiple CSI transmissions and is distinguished from a PUSCH allocated by the existing UL grant PDCCH.
- a PUSCH allocated for multiple CSI transmissions is referred to as PUSCH_CSI
- a PUSCH allocated by UL grant PDCCH is referred to as PUSCHJJG. If there is no PUSCHJJG transmission other than PUSC1LCSI in the CSI reporting subframe and there is UL data to be transmitted, the following operation may be considered to enjoy the UL data transmission delay.
- CSI 1-1 black is the case of CSI 2-1 (i.e., if the number / quantity of CSI is more than the minimum number / quantity of CSI for simultaneous transmission)
- CSI 1-2 or CSI 2-2 ie, CSI count / amount is less than minimum CSI count / amount for simultaneous transmission, but no UL data is present
- the PUSCH means a channel pre-allocated for multiple CSI transmissions and is distinguished from a PUSCH allocated by the existing UL grant PDCCH.
- a PUSCH allocated for multiple CSI transmissions is referred to as PUSCH_CSI
- a PUSCH allocated by UL grant PDCCH is referred to as PUSCHJJG.
- the CSI transmission point and the ACK / NACK transmission point are the same and there is no PUSCH allocated to the corresponding subframe, the CSI is dropped according to the UCI priority.
- the following operation may be considered to reduce the loss due to the CSI drop.
- CSI 1-1 black is CSI 2-1 (i.e., CSI number / amount is greater than minimum CSI number / amount for simultaneous transmission), and no ACK / NACK exists
- CSI 1-1 black is CSI 2-1 and ACK / NACK is present (i.e., CSI number / amount is more than minimum CSI number / amount for simultaneous transmission, and ACK / NACK is present).
- CSI 1-2 or CSI 2-2 i.e., the number / number of CSIs is less than the minimum number / number of CSIs for simultaneous transmission, and no ACK / NACK exists
- the PUSCH means a channel pre-allocated for multiple CSI transmissions and is distinguished from the PUSCH allocated by the existing UL grant PDCCH.
- a PUSCH allocated for multiple CSI transmissions is referred to as PUSC1LCSI
- a PUSCH allocated by UL grant PDCCH is referred to as PUSCHJJG.
- PUSCHJJG a PUSCH allocated by UL grant PDCCH
- PUSCHJJG PUSCH allocated by UL grant PDCCH
- the following operation may be considered to reduce the loss due to the CSI drop.
- FIG. 17 illustrates a CSI reporting process according to an embodiment of the present invention when a plurality of carrier black cells are merged.
- a plurality of CCs are configured for a terminal (S1702), and a periodic CSI reporting mode is independently configured for each CC (eg, according to a transmission mode) (S1704). If the CSI reporting subframes do not overlap in multiple CCs (that is, only CSI transmission for one CC is required in the corresponding subframe) (S1706), CSI for the CC is transmitted through the subframe. (S1708). On the other hand, when the CSI reporting subframes overlap in multiple CCs (S1706), the UE may determine whether the CSI reporting situation satisfies a predetermined condition (S1708).
- the UE reports NOl) CSIs for a plurality of CCs (or cells) using the first channel / format (S1712). If the second condition is satisfied, the UE reports the second CSI.
- the channel / format may be used to report CSI for one CC (or cell) or drop CSI for all CCs (or cells) (S1714).
- the first condition and the second condition may be used as three or more conditions as an example.
- the first channel / format may be performed on the UL channel / format X, and the two channel / format may include the PUCCH format 2 / 2a / 2b.
- the contents of steps S1712 and S1714 are shown as the contents of the first example of the method 1. This is an example, and each condition used in step S1710 and the corresponding CSI report may be modified according to the contents proposed in the methods 1-7.
- a wireless communication system includes a base station (BS) 110 and a terminal (UE) 120.
- Base station 110 includes processor 112, memory 114, and radio frequency (Radio). Frequency (RF) unit 116.
- the processor 112 may be configured to implement the present invention and / or methods.
- 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 to the processor 112 and transmits and / or receives a radio signal.
- Terminal 120 includes a processor 122, a memory 124, and an RF unit 126.
- Processor 122 may be configured to implement the procedures and / or methods proposed herein.
- 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 and / or receives a radio signal.
- the base station 110 and / or the terminal 120 may have a single antenna or multiple antennas.
- ⁇ In a network consisting of a plurality of network nodes including a base station, various operations performed for communication with a terminal may be performed by a base station or other network nodes other than the 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.
- the terminal may be replaced with terms such as UEOJser Equipment (MSO), Mobile Station (MS), and Mobile Subscriber Station (MSS).
- MSO UEOJser Equipment
- MS Mobile Station
- MSS Mobile Subscriber Station
- Embodiments according to the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof.
- an embodiment of the present invention may include one or more ASICs pplication specific integrated circuits (DSPs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), and FPGAs (fields).
- DSPs application specific integrated circuits
- DSPs digital signal processors
- DSPDs digital signal processing devices
- PLDs programmable logic devices
- FPGAs fields
- programmable gate arrays programmable gate arrays
- processors controllers, microcontrollers, microprocessors, and the like.
- 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 wireless communication device such as a terminal, a relay, a base station, and the like.
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Abstract
Description
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Priority Applications (4)
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| US15/595,323 USRE48327E1 (en) | 2011-06-10 | 2012-06-11 | Method for transmitting control information and apparatus for same |
| KR1020137030084A KR101556174B1 (ko) | 2011-06-10 | 2012-06-11 | 제어 정보를 전송하는 방법 및 이를 위한 장치 |
| US14/122,125 US9167576B2 (en) | 2011-06-10 | 2012-06-11 | Method for transmitting control information and apparatus for same |
| US15/590,322 USRE48004E1 (en) | 2011-06-10 | 2012-06-11 | Method for transmitting control information and apparatus for same |
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| US201161495388P | 2011-06-10 | 2011-06-10 | |
| US61/495,388 | 2011-06-10 | ||
| US201161554478P | 2011-11-01 | 2011-11-01 | |
| US61/554,478 | 2011-11-01 |
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| WO2012169859A2 true WO2012169859A2 (ko) | 2012-12-13 |
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| US (3) | USRE48327E1 (ko) |
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| WO (1) | WO2012169859A2 (ko) |
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| US9819458B2 (en) * | 2010-08-13 | 2017-11-14 | Qualcomm Incorporation | Feedback bundling for power-limited devices in wireless communications |
| US20120220286A1 (en) * | 2010-08-17 | 2012-08-30 | Texas Instruments Incorporated | Periodic Channel Quality Indicator on Physical Uplink Control Channel for Carrier Aggregation |
| WO2012169859A2 (ko) | 2011-06-10 | 2012-12-13 | 엘지전자 주식회사 | 제어 정보를 전송하는 방법 및 이를 위한 장치 |
-
2012
- 2012-06-11 WO PCT/KR2012/004598 patent/WO2012169859A2/ko not_active Ceased
- 2012-06-11 KR KR1020137030084A patent/KR101556174B1/ko active Active
- 2012-06-11 US US15/595,323 patent/USRE48327E1/en active Active
- 2012-06-11 US US15/590,322 patent/USRE48004E1/en active Active
- 2012-06-11 US US14/122,125 patent/US9167576B2/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086526A (zh) * | 2013-12-03 | 2019-08-02 | Lg 电子株式会社 | 在支持mtc的无线接入系统中发送上行链路的方法和设备 |
| CN110086526B (zh) * | 2013-12-03 | 2022-03-01 | Lg 电子株式会社 | 在支持mtc的无线接入系统中发送上行链路的方法和设备 |
| WO2017048057A1 (ko) * | 2015-09-20 | 2017-03-23 | 엘지전자 주식회사 | 무선 통신 시스템에서 채널 상태 보고 방법 및 이를 위한 장치 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140092856A1 (en) | 2014-04-03 |
| KR101556174B1 (ko) | 2015-10-13 |
| USRE48327E1 (en) | 2020-11-24 |
| WO2012169859A3 (ko) | 2013-03-07 |
| US9167576B2 (en) | 2015-10-20 |
| USRE48004E1 (en) | 2020-05-19 |
| KR20140010153A (ko) | 2014-01-23 |
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