WO2014110931A1 - 调制处理方法及装置 - Google Patents
调制处理方法及装置 Download PDFInfo
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- WO2014110931A1 WO2014110931A1 PCT/CN2013/086202 CN2013086202W WO2014110931A1 WO 2014110931 A1 WO2014110931 A1 WO 2014110931A1 CN 2013086202 W CN2013086202 W CN 2013086202W WO 2014110931 A1 WO2014110931 A1 WO 2014110931A1
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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
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
- H04L1/0004—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes applied to control information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
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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
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
- H04L1/001—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding applied to control information
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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
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
- H04L1/0016—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy involving special memory structures, e.g. look-up tables
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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
- H04L1/0025—Transmission of mode-switching 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
- H04L1/0001—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
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
Definitions
- the present invention relates to the field of mobile wireless communications, and in particular to a modulation processing method and a terminal and a base station in a wireless communication system.
- adaptive code modulation technology belongs to the most typical link adaptation technology.
- the control signaling that needs to be transmitted on the uplink has an Acknowledgement/Negative Acknowledgement (ACK/NACK: Acknowledgement/Negative Acknowledgement) and reflects the downlink physical channel status information (CSI: Channel State Information).
- ACK/NACK Acknowledgement/Negative Acknowledgement
- CSI Channel State Information
- CQI Channel quality indication
- PMI Pre-coding Matrix Indicator
- RI Rank Indicator
- CQI is an indicator used to measure the quality of downlink channels.
- CQI is represented by an integer value of 0 to 15, which represents different CQI levels, and different CQIs correspond to each.
- MCS Modulation and Coding Scheme
- QAM Quadrature Amplitude Modulation
- QPSK Quadrature Phase Shift Keying
- the selected CQI level should be such that the PDSCH (Physical Downlink Shared Channel) corresponding to the CQI has a block error rate of no more than 0.1 under the corresponding MCS.
- the UE Based on an unrestricted detection interval in the frequency domain and the time domain, the UE will obtain the highest CQI value corresponding to each of the maximum CQI values reported in the uplink subframe n, and the CQI has a sequence number ranging from 1 to 15 and satisfies The following conditions, if the CQI sequence number 1 does not satisfy the condition, the CQI sequence number is 0: The error rate of a single PDSCH transport block when received is not more than 0.1, and the PDSCH transport block contains joint information: modulation mode and transport block size, which corresponds to A CQI sequence number and a group of downlink physical resource blocks occupied, that is, CQI reference resources.
- the highest CQI value is the maximum CQI value when the BLER (Block Error Ratio) is not greater than 0.1, which is beneficial to control resource allocation.
- the smaller the CQI value the more resources it consumes and the better the BLER performance.
- these joint information of the PDSCH transmission in the CQI reference resource can be signaled, and: the joint information of the modulation scheme and the effective channel coding rate generated by the CQI reference resource are most likely to be characterized by the CQI sequence number. Proximity effective channel coding rate. When there is more than one joint information, which can produce the same effective channel coding rate characterized by the CQI sequence number, then the joint information with the smallest transport block size is used.
- Each CQI sequence number corresponds to a modulation mode and a transport block size, and the correspondence between the transport block size and the NPRB can be expressed in a table.
- the encoding rate can be calculated based on the transport block size and the size of the NPRB.
- the ACK/NACK response message is transmitted on the physical uplink control channel (PUCCH: Physical Uplink Control) in the format 1/1 a/lb (PUCCH format 1/1 al/b), if the terminal (UE: User Equipment)
- PUCCH Physical Uplink Control
- UE User Equipment
- the feedback of the CQI/PMI and RI may be periodic feedback or non-periodic feedback.
- the specific feedback is as follows. 2: Table 2: Uplink physical channel corresponding to periodic feedback and aperiodic feedback
- the cyclic feedback CQI/PMI, RI if the UE does not need to send uplink data, the cyclic feedback CQI/PMI, RI is in the format 2/2a/2b (PUCCH format2/2a/2b) on the PUCCH. Transmission, if the UE needs to send uplink data, then CQI/PMI, RI is transmitted on PUSCH; for non-periodic feedback CQI/PMI, RI is only transmitted on PUSCH.
- the following three types of downlink physical control channels are defined in the Release 8 standard of the Long-Term Evolution (LTE): Physical Control Format Indicator Channel (PCFICH for short), physical Hybrid Automatic Retransmission Request Indicator Channel (PHICH) and Physical Downlink Control Channel (Physical Downlink) Control Channel, referred to as PDCCH).
- PCFICH Physical Control Format Indicator Channel
- PHICH physical Hybrid Automatic Retransmission Request Indicator Channel
- PDCCH Physical Downlink Control Channel
- the PDCCH is used to carry Downlink Control Information (DCI), and includes: uplink and downlink scheduling information, and uplink power control information.
- DCI Downlink Control Information
- the DCI format (DCI format) is divided into the following types: DCI format 0, DCI format 1, DCI format 1A, DCI format IB, DCI format 1C, DCI format 1D, DCI format 2, DCI format 2A, DCI format 2B, DCI Format 2C, DCI format 2D, DCI format 3 and DCI format 3 A, etc.;
- downlink control information needs to be defined in the downlink control signaling, such as a coded modulation mode, a resource allocation location, and HARQ information.
- the downlink scheduling of the base station determines a coding modulation mode.
- a modulation and transmission block size table is defined in the protocol, and each row of the table corresponds to one MCS index.
- a modulation and transmission block size table defines a type.
- the specific table can refer to the 36.213 standard of LTE.
- An MCS index essentially corresponds to a spectrum efficiency.
- the selection of the MCS index needs to refer to the value of the CQI.
- the base station needs to consider the spectral efficiency of the two.
- the base station determines the MCS index, and also needs to determine resource allocation information.
- the resource allocation gives the number of physical resource blocks NPRB that the downlink transmission needs to occupy.
- the LTE standard also provides a TBS table, where the table is given a MCS index and physical resources.
- Block number NPRB strip In the R10 version, the UE is semi-statically set by higher layer signaling to be based on one of the following transmission modes, according to user equipment specific (UE-Specific) search.
- Transmission mode 1 Single antenna port; Port 0 (Single-antenna port; port 0) Transmission mode 2: Transmit diversity
- Transmission mode 3 Open-loop spatial multiplexing
- Transmission Mode 5 Multi-user Multiple Input Multiple Output (Multi-user MIMO)
- Transmission mode 7 Single antenna port; Port 5 (Single-antenna port; port 5)
- Transmission mode 8 Dual stream transmission, ie dual stream beamforming
- Transmission mode 9 Up to 8 layers of transmission. (up to 8 layer transmission) Transmission mode 10: Up to 8 layers of transmission supporting COMP function.
- LTE Long Term Evolution
- the embodiments of the present invention provide a modulation processing method, a terminal, and a base station, so as to solve the problem that the existing communication standard cannot meet the requirement.
- an embodiment of the present invention provides a code modulation processing method, where the method includes:
- the base station sends high-level configuration signaling to the terminal, where the high-level configuration signaling is used to indicate whether a high-order quadrature amplitude modulation (QAM) modulation mode is supported, and the high-order QAM modulation mode is a modulation mode greater than 64QAM.
- QAM quadrature amplitude modulation
- the method further includes:
- the base station receives channel state information of the terminal, where the channel state information includes at least channel quality indication (CQI) information, and when the high layer configuration signaling indicates that the high order QAM modulation mode is not supported, the CQI information is based on The first CQI table supporting the high-order QAM modulation mode is obtained. When the high-level configuration signaling indicates that the high-order QAM modulation mode is supported, the CQI information is obtained based on a second CQI table that supports the high-order QAM modulation mode.
- CQI channel quality indication
- the method further includes:
- the base station sends downlink control signaling to the terminal, where the downlink control signaling includes at least a modulation and coding mode domain (/ MCS ), and when the high-layer configuration signaling indicates that the high-order QAM modulation mode is not supported, the modulation is performed.
- the coding mode field (/ ⁇ ) is determined based on a first modulation and transport block size (TBS) index table that does not support high-order QAM; when high-level configuration signaling indicates that high-order QAM modulation is supported,
- TBS transport block size
- an embodiment of the present invention further provides a code modulation processing method, where the method includes:
- the terminal receives high-level configuration signaling sent by the base station, where the high-level configuration signaling is used to indicate whether to support a high-order quadrature-amplitude modulation (QAM) modulation mode, where the high-order QAM modulation mode is a modulation mode greater than 64QAM.
- QAM quadrature-amplitude modulation
- the embodiment of the present invention further provides a base station, where the base station includes: a configuration information sending unit, configured to send high-level configuration signaling to the terminal, where the high-level configuration signaling is used to indicate whether to support high-order A quadrature amplitude modulation (QAM) modulation scheme, the high-order QAM modulation scheme being a modulation scheme greater than 64QAM.
- a configuration information sending unit configured to send high-level configuration signaling to the terminal, where the high-level configuration signaling is used to indicate whether to support high-order A quadrature amplitude modulation (QAM) modulation scheme, the high-order QAM modulation scheme being a modulation scheme greater than 64QAM.
- QAM quadrature amplitude modulation
- the embodiment of the present invention further provides a terminal, where the terminal includes: a configuration information receiving unit, configured to receive high layer configuration signaling sent by a base station, where the high layer configuration signaling is used to indicate whether to support high A quadrature amplitude modulation (QAM) modulation method, wherein the high-order QAM modulation mode is a modulation mode greater than 64QAM.
- a configuration information receiving unit configured to receive high layer configuration signaling sent by a base station, where the high layer configuration signaling is used to indicate whether to support high A quadrature amplitude modulation (QAM) modulation method, wherein the high-order QAM modulation mode is a modulation mode greater than 64QAM.
- QAM quadrature amplitude modulation
- the transmission and feedback of the MQAM are well supported, and the MQAM is well supported under the condition that the existing system is compatible, the signaling overhead is not increased, the transmission and the feedback are guaranteed, and the system is improved.
- Frequency efficiency and data peak rate, and support for 256QAM or 256QAM through semi-static switching, guarantees the use of 256QAM in a reasonable environment, such as 256QAM in a small cell environment.
- FIG. 1 is a schematic diagram of a modulation processing method applied to a base station according to an embodiment of the present invention
- FIG. 2 is a schematic diagram of a modulation processing method applied to a terminal according to an embodiment of the present invention
- FIG. 3 is a schematic structural diagram of a base station according to an embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of a terminal according to an embodiment of the present invention. Preferred embodiment of the invention Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.
- This embodiment provides a modulation processing method, which is applied to a base station, and includes:
- the base station (eNodeB) sends high layer configuration signaling to the terminal (UE), where the high layer configuration signaling is used to indicate whether to support a high order quadrature amplitude modulation (QAM) modulation mode, and the high order QAM modulation mode is a modulation greater than 64QAM. the way.
- QAM quadrature amplitude modulation
- high-order QAM is also referred to as M QAM, where M is a positive integer greater than 64 and is a power of 2.
- M 256
- M QAM 256QAM
- the high-level configuration signaling may be a new high-level configuration signaling or an existing high-level configuration signaling, such as an existing high-level configuration signaling used to indicate a transmission mode.
- the predefined one or more transmission modes support the sending of the high-level configuration signaling, and the other modes do not support the sending of the high-level configuration signaling, where the base station only supports transmission in the transmission mode.
- the high layer configuration signaling is sent when the high layer configures signaling.
- the sender and receiver of the high-level configuration signaling that is, the base station and the terminal, predefine the content of the explicit indication (such as the transmission mode) and the content of the implicit indication (refer to whether the high-order QAM is supported). Correspondence between modulation methods).
- the high-level configuration signaling used to indicate the transmission mode is used to implement an implicit indication whether the high-order QAM modulation mode is supported.
- the base station and the terminal pre-define one or more modes to support the MQAM, and the other transmission modes do not support the MQAM.
- the foregoing transmission mode supporting MQAM may be a transmission mode 9, a transmission mode 10, a newly defined transmission mode, or all transmission modes, or only one or more proprietary transmission modes are newly defined;
- M may also be 128, 256 or 1024.
- the method in this embodiment ensures that the semi-static handover supports the use of 256QAM or does not support 256QAM, which ensures that 256QAM is used in a reasonable environment, for example, 256QAM is used in a small cell environment.
- the present invention provides a coding and modulation processing method, and an application base station, including:
- the base station sends high layer configuration signaling to the terminal (UE), where the high layer configuration signaling is used to indicate whether to support a high order quadrature amplitude modulation (QAM) modulation mode, the high order QAM (also referred to as M QAM)
- the modulation method is a modulation method larger than 64 QAM.
- the base station receives the channel state information of the terminal, where the channel state information includes at least channel quality indication (CQI) information, when the high layer configuration signaling is performed.
- CQI channel quality indication
- the CQI information is obtained based on the first CQI table that does not support the high-order QAM modulation mode.
- the CQI information is based on Obtained based on a second CQI table supporting high-order QAM modulation.
- the first CQI table is a 4-bit CQI table of Release 8 of LTE; the second CQI table has the following manner:
- the second CQI table has 16 values, that is, the CQI is represented by 4 bits, and a combination of L1 modulation modes and code rates in addition to a combination of L2 modulation modes and code rates in the first CQI table is described.
- Mode A1 a combination of L1 modulation modes and code rates in addition to the first L2 modulation modes and code rate combinations in the first CQI table are sequentially used as the first L1 modulation modes in the second CQI table. And a combination of code rates, the combination of the L2 modulation modes and the code rate in the second CQI table is a combination of QAM and code rate greater than 64;
- the "2 (original 4)" in the 4th line of the CQI indicator column in the above table indicates the modulation mode and code rate combination corresponding to the CQI index of 2 and the original CQI table (that is, the first CQI table referred to herein). When the CQI index is 4, the corresponding modulation mode and code rate combination are the same.
- the “15 (new)” in the last line indicates that the modulation mode and code rate combination corresponding to the CQI index is 15 relative to the original CQI table.
- the second CQI form below is interpreted in a similar manner and will not be described below.
- Method A12 L1 combinations in the first CQI table except the first L2 combinations of even modulation and code rate or odd modulation and code rate are sequentially used as the first L1 combinations in the second CQI table, and the second CQI table
- the last L2 modulation mode and the code rate combination is a QAM and a code rate combination greater than 64; wherein, in the first CQI table, the odd modulation mode and the code rate combination refer to the first, third, fifth, seventh, and ninth. 11, 13, 15 modulation mode and code rate combination set, the even modulation mode and code rate combination refers to the second, fourth, sixth, eighth, ten, twelve, 14 modulation mode and code rate combination set.
- mode A2 in the second CQI table, the CQI has 16 or 32 values, and any combination of the modulation mode and the code rate in the second CQI table is the same as all modulation modes in the first CQI table. Or the combination of the code rate is different; or, the combination of the first modulation mode and the code rate in the second CQI table is the same as the combination of the kth modulation mode and the code rate of the first CQI table, the second CQI table
- the combination of other modulation modes and code rates is different from the combination of all modulation modes and code rates in the first CQI table, where k is a positive integer between 1 and 5; wherein, the second CQI table, the first one The modulation mode and the code rate combination refer to the second line in the second CQI table, and the corresponding CQI index is 1.
- Table 5 CQI cable bow 1 modulation mode code rate x 1024 spectrum efficiency
- mode A3 the CQI in the second CQI table has 32 values, and the first 13 or 14 or 15 combinations of the combination of the odd modulation mode and the code rate in the second CQI table are the first CQI table. A combination of medium modulation mode and code rate.
- the following is a second CQI table designed by the method A3, wherein the first 14 combinations of the combination of the odd modulation mode and the code rate in the second CQI table are the combination of the modulation mode and the code rate in the first CQI table, such as a table. 6 shows:
- the third embodiment of the code modulation processing method of the present invention is applied to a base station, and includes:
- the base station (eNodeB) transmits high layer configuration signaling to the terminal (UE), and the high layer configuration signaling may indicate whether the supported modulation mode includes high order QAM or high order QAM.
- M is a positive integer greater than 64 and is a power of 2.
- the base station sends downlink control signaling to the terminal (UE), where the downlink control signaling includes at least a modulation and coding mode domain (/ MCS).
- the modulation and coding mode field indicates that the high-order QAM modulation mode is not supported
- the modulation and coding mode field is determined based on a first modulation and transport block size (TBS) index table that does not support high-order QAM
- TBS transport block size
- High-level configuration signaling indicates that when high-order QAM modulation is supported, combined with predefined
- the information determines whether the modulation and coding mode field (/ MCS ) is determined based on the second modulation and TBS index table supporting higher order QAM.
- the predefined information is at least one of the following: a search space, a downlink control information format, and a CRC scrambling mode corresponding to the downlink control information.
- the predefined information is a search space
- TBS modulation and transport block size
- the predefined information is a CRC scrambling mode corresponding to the search space and the downlink control information, and is predefined: the high-level configuration signaling indication supports the high-order QAM modulation mode, and is in the public search space or on the UE-specific search space.
- the modulation and coding mode field (/ ⁇ ) is determined based on a first modulation and transport block size (TBS) index table that does not support high-order QAM, and the high-level configuration signaling indicates support for high-order QAM.
- TSS modulation and transport block size
- the modulation and coding mode field (/ MCS ) is based on the second modulation and transport block size supporting high-order QAM ( TBS) Index table is determined.
- the predefined information may also be a downlink control information format, and predefined: the high-level configuration signaling indication supports a high-order QAM modulation mode, and the downlink control information format is a predefined format that supports a high-order QAM modulation mode. And the modulation and coding mode field (/ Mes ) is determined based on a second modulation and transport block size (TBS) index table supporting high-order QAM, and the high-level configuration signaling indicates that high-order QAM modulation mode or downlink control is not supported.
- TBS modulation and transport block size
- the information format is a predefined format that does not support the high-order QAM modulation mode, and the modulation and coding mode field (/ ⁇ ) is determined based on a first modulation and transport block size (TBS) index table that does not support higher-order QAM.
- TBS transport block size
- Pre-defined transmission mode supporting high-order quadrature amplitude modulation supports high-order quadrature amplitude modulation for all downlink control information formats
- pre-defined transmission mode supporting high-order quadrature amplitude modulation corresponds to all downlink control information formats. Only one downlink control information format supports high-order quadrature amplitude modulation.
- control information format supporting MQAM may include at least one of the following: DCI Format 2C, DCI Format 2D, DCI Format 4, DCI Format 0, DCI Format 1A, DCI Format X (new defined control information format);
- the base station sends downlink data based on downlink control signaling.
- the first modulation and TBS index table is a 5-bit modulation and TBS index table of Release 8 of LTE; and the second modulation and TBS index table is used in one of the following manners:
- the second modulation and TBS index table has 32 values, that is, the MCS index is represented by 5 bits, and L1 in the first modulation and TBS index table except for the combination of the L2 modulation modes and the TBS index.
- L1 combinations other than the first L2 modulation and TBS index combinations in the first modulation and TBS index table are sequentially used as the first L1 combinations, the second modulation and the TBS index in the second modulation and TBS index table.
- the second modulation and TBS index table can be designed as shown in Table 7 below:
- Mode B12 L1 combinations other than the even-number modulation mode and the TBS index combination or the first L2 combination of the odd-number modulation mode and the TBS index combination in the first modulation and TBS index table are sequentially used as the first L1 in the second modulation and TBS index table.
- the second modulation and TBS index table can be designed as shown in Table 8 below:
- L1 modulation mode and TBS index combination in the first modulation and TBS index table except for one of the first L2-2, the 10th and the 11th, and the 17th and 18th, respectively, as the The first L1 combination in the second modulation and TBS index table, the first L1 in the second modulation and TBS index table
- the second modulation and TBS index table can be designed as shown in Table 9 below:
- 31 (new) 8 mode B14 one of the first L2-2, the 10th and the 11th, and the 17th and 18th, except the even modulation mode and the TBS index in the first modulation and TBS index table.
- the L1 modulation modes and the TBS index combination are sequentially used as the first L1 combinations in the second modulation and TBS index table, and the first L1 subsequent L2-1 combinations in the second modulation and TBS index table are QAM greater than 64.
- the second modulation and TBS index table can be designed as shown in Table 10 below:
- mode B2 the second modulation and TBS index table has 32 or 64 values, and the combination of any one of the second modulation and TBS index tables and the TBS index is combined with the first modulation and TBS index table. All the modulation modes and the TBS index combinations are different; or, the combination of the first modulation mode and the TBS index in the second modulation and TBS index table is the same as the kth combination in the first modulation and TBS index table, and the The TBS indices of the last four combinations in the second modulation and TBS index tables are default, others are different, and k is a positive integer between 1 and 5.
- the combination of the first modulation mode and the TBS index in the second modulation and TBS index table refers to the first row in the second modulation and TBS index table, and the corresponding MCS index is 0.
- the combination of any one of the second modulation and TBS index tables and the TBS index is the same as in the first modulation and TBS index table.
- the modulation scheme is different from the TBS index combination, and the second modulation and TBS index table can be designed as shown in Table 11 below:
- mode B3 the second modulation and TBS index table has 64 values, and the combination of the first/odd or even modulation mode and the TBS index in the second modulation and TBS index table are both the first modulation and the TBS.
- the combination of the first/even even modulation mode and the TBS index in the second modulation and TBS index table is a combination of the modulation mode and the TBS index in the first modulation and TBS index table.
- the second modulation and TBS index table can be designed as shown in Table 12 below: Table 12
- the present invention is applied to a modulation processing method of a base station, as shown in FIG. 1, including the following steps:
- Step 101 The base station (eNodeB) sends high-level configuration signaling to the terminal (UE), where the high-level configuration signaling is used to indicate whether to support a high-order quadrature-amplitude modulation (QAM) modulation mode, where the high-order QAM modulation mode is greater than 64QAM modulation method.
- QAM quadrature-amplitude modulation
- Step 102 The base station receives channel state information of the terminal, where the channel state information includes at least channel quality indication (CQI) information, where the high-level configuration signaling indicates that the high-order QAM modulation mode is not supported, the CQI The information is based on the first CQI that does not support high-order QAM modulation. The table is obtained. When the high-level configuration signaling indicates that the high-order QAM modulation mode is supported, the CQI information is obtained based on a second CQI table supporting a high-order QAM modulation mode.
- CQI channel quality indication
- Step 103 The base station sends downlink control signaling to the terminal, where the downlink control signaling includes at least a modulation and coding mode domain (/ MCS ), and when the high-layer configuration signaling indicates that the high-order QAM modulation mode is not supported,
- the modulation and coding mode field (/ Mes ) is determined based on a first modulation and transport block size (TBS) index table that does not support high-order QAM; when the high-layer configuration signaling indicates support for a high-order QAM modulation mode, the modulation And the coding mode field is determined based on the second modulation and TBS index table supporting high order QAM.
- TBS transport block size
- the base station (eNodeB) then transmits downlink data to the terminal (UE) based on the aforementioned downlink control signaling.
- the present invention also provides a code modulation processing method, which is based on a terminal, that is, a method of the present invention is described from the perspective of a terminal, and the method includes:
- the terminal receives high-level configuration signaling sent by the base station, where the high-level configuration signaling is used to indicate whether to support a high-order quadrature-amplitude modulation (QAM) modulation mode, where the high-order QAM modulation mode is a modulation mode greater than 64QAM.
- QAM quadrature-amplitude modulation
- the high-level configuration signaling is added.
- the predefined one or more transmission modes support sending the high-level configuration signaling, and the other modes do not support sending the high-level configuration signaling, where the base station only supports the sending of the high-level configuration signaling when the transmission mode is supported. Sending the high layer configuration signaling.
- one or more transmission modes are predefined to support high-order quadrature amplitude modulation, and other modes do not support high-order quadrature amplitude modulation, and the high-level configuration signaling is transmission mode indication signaling.
- the method further includes:
- the terminal sends channel state information to the base station, where the channel state information includes at least channel quality indication (CQI) information, when the high-layer configuration signaling indicates When the high-order QAM modulation mode is not supported, the CQI information is obtained based on the first CQI table that does not support the high-order QAM modulation mode.
- CQI channel quality indication
- the CQI information is supported.
- the second CQI table of the high-order QAM modulation method is obtained.
- the corresponding code rate r is a real number between 0.92 and 0.96.
- the first CQI table is a 4-bit CQI table of Release 8 of LTE; and the second CQI table is configured as follows:
- mode A2 in the second CQI table, the CQI has 16 or 32 values, and any combination of the modulation mode and the code rate in the second CQI table is the same as all modulation modes in the first CQI table. Or the combination of the code rate is different; or, the combination of the first modulation mode and the code rate in the second CQI table is the same as the combination of the kth modulation mode and the code rate of the first CQI table, the second CQI table
- the combination of other modulation modes and code rates is different from the combination of all modulation modes and code rates in the first CQI table, where k is a positive integer between 1 and 5; wherein, the second CQI table, the first one The modulation mode and the code rate combination refer to the second row in the second CQI table, and the corresponding CQI index is 1.
- mode A3 the CQI in the second CQI table has 32 values, and the first 13 or 14 or 15 combinations of the combination of the odd modulation mode and the code rate in the second CQI table are the first CQI table.
- the odd modulation mode and the code rate combination refer to a modulation mode and a code rate combination set of the first, third, fifth, seventh, ninth, eleventh, and thirteenth, and nineteenth.
- the mode A1 is the mode Al l or the mode A12, where:
- Mode A1 a combination of L1 modulation modes and code rates in addition to the first L2 modulation modes and code rate combinations in the first CQI table are sequentially used as the first L1 modulation modes and code rates in the second CQI table.
- Combining, the combination of the L2 modulation modes and the code rate in the second CQI table is a combination of QAM and code rate greater than 64;
- Method A12 In addition to even modulation and code rate combination or odd modulation and code rate in the first CQI table
- the L1 combinations other than the first L2 combinations are sequentially used as the first L1 combinations in the second CQI table, and the last L2 modulation modes and code rate combinations in the second CQI table are QAM and code rate combinations greater than 64;
- the even modulation mode and the code rate combination refer to a modulation mode and a code rate combination set of the second, fourth, sixth, eighth, tenth, and twelveteenth.
- the terminal receives the downlink control signaling sent by the base station, where the downlink control signaling includes at least a modulation and coding mode domain (/ MCS ).
- the modulation and coding mode field (/) is determined based on a first modulation and transport block size (TBS) index table that does not support high-order QAM;
- TBS transport block size
- the modulation and coding mode field is determined based on the second modulation and TBS index table supporting high-order QAM.
- the first modulation and TBS index table is a version 8 5-bit modulation and TBS index table of LTE;
- the second modulation and TBS index table is configured in one of the following manners: mode B1:
- mode B2 the second modulation and TBS index table has 32 or 64 values, and the combination of any one of the second modulation and TBS index tables and the TBS index is combined with the first modulation and TBS index table. All the modulation modes and the TBS index combinations are different; or, the combination of the first modulation mode and the TBS index in the second modulation and TBS index table is the same as the kth combination in the first modulation and TBS index table, and the The TBS indices of the last four combinations in the second modulation and TBS index table are default, others are different, k is a positive integer between 1 and 5; wherein the second modulation and the first modulation in the TBS index table The combination of the mode and the TBS index refers to the first row in the second modulation and TBS index table, and the corresponding MCS index is 0.
- mode B3 the second modulation and TBS index table has 64 values, and the combination of the first/odd or even modulation mode and the TBS index in the second modulation and TBS index table are both the first modulation and the TBS.
- the mode B1 is a mode Bl1, a mode B12, a mode B13, or a mode B14, where:
- L1 combinations other than the first L2 modulation and TBS index combinations in the first modulation and TBS index table are sequentially used as the first L1 combinations, the second modulation and the TBS index in the second modulation and TBS index table.
- Mode B12 L1 combinations other than the even-number modulation mode and the TBS index combination or the first L2 combination of the odd-number modulation mode and the TBS index combination in the first modulation and TBS index table are sequentially used as the first L1 in the second modulation and TBS index table.
- Mode B13 L1 modulation modes and TBS index combinations in the first modulation and TBS index table except one of the first L2-2, the 10th and the 11th, and the 17th and 18th are sequentially
- the first L1 combinations in the second modulation and TBS index table, the first L1 subsequent L2-1 combinations in the second modulation and TBS index table are combinations of QAM and TBS indexes greater than 64, and the second modulation and TBS index table
- Mode B14 in the first modulation and TBS index table, except for the even modulation mode and the TBS index or the odd modulation mode and the first L2-2, the 10th and 11th, and the 17th and 18th of the TBS index.
- An L1 modulation scheme and a TBS index combination are sequentially used as the first L1 combinations in the second modulation and TBS index table, and the first L1 subsequent L2-1 combinations in the second modulation and TBS index table are greater than 64.
- the code modulation processing method applied to the terminal includes: Step 201: The terminal receives high-level configuration signaling sent by the base station, where the high-level configuration signaling is used to indicate whether to support the high-order orthogonal amplitude. a modulation (QAM) modulation mode, where the high-order QAM modulation mode is a modulation mode greater than 64QAM;
- QAM modulation
- Step 202 The terminal sends channel state information to the base station, where the channel state information includes at least channel quality indication (CQI) information.
- CQI channel quality indication
- the CQI channel quality indication
- the high layer configuration signaling indicates that the high order QAM modulation mode is not supported
- the CQI The information is obtained based on the first CQI table that does not support the high-order QAM modulation mode.
- the high-level configuration signaling indicates that the high-order QAM modulation mode is supported
- the CQI information is obtained based on the second CQI table supporting the high-order QAM modulation mode.
- Step 203 The terminal receives downlink control signaling sent by the base station, where the downlink control signaling includes at least a modulation and coding mode domain (/ MCS ).
- the modulation and coding mode field (/ Mes ) is determined based on a first modulation and transport block size (TBS) index table that does not support high-order QAM; when the high-level configuration signaling indicates that the high-order QAM modulation mode is supported, then the The modulation and coding mode field is based on a second modulation and TBS index table determination that supports higher order QAM.
- TBS transport block size
- the present invention further provides an embodiment of a base station, where the base station includes: a configuration signaling sending unit, configured to send high-level configuration signaling to the terminal, where the high-level configuration signaling is used to indicate whether to support A high-order quadrature amplitude modulation (QAM) modulation method, which is a modulation method greater than 64QAM.
- a configuration signaling sending unit configured to send high-level configuration signaling to the terminal, where the high-level configuration signaling is used to indicate whether to support A high-order quadrature amplitude modulation (QAM) modulation method, which is a modulation method greater than 64QAM.
- QAM quadrature amplitude modulation
- the base station further includes a channel state information receiving unit, configured to receive channel state information of the terminal, where the channel state information includes at least channel quality indication (CQI) information, when the high layer configuration signaling indicates When the high-order QAM modulation mode is supported, the CQI information is obtained based on the first CQI table that does not support the high-order QAM modulation mode.
- CQI channel quality indication
- the CQI information is supported.
- the second CQI table of the high-order QAM modulation method is obtained. The specific implementation of the first and second CQI tables is as described above.
- the base station further includes a downlink control signaling sending unit, configured to send downlink control signaling to the terminal, where the downlink control signaling includes at least a modulation and coding mode domain (/ MCS ), when a high-level configuration signal
- the modulation and coding mode field is determined based on the first modulation and transport block size (TBS) index table that does not support high-order QAM; when the high-level configuration signaling indicates that the high-order is supported In the QAM modulation mode, the modulation and coding mode field is determined based on a second modulation and TBS index table supporting high order QAM.
- TBS transport block size
- the base station device in the embodiment of the present invention supports the transmission and feedback of the MQAM well, and supports the MQAM in a compatible manner with the existing system without increasing the signaling overhead, ensuring the transmission and feedback, and improving the system.
- the present invention further provides a terminal embodiment.
- the terminal includes:
- a configuration information receiving unit configured to receive high layer configuration signaling sent by the base station, where the high layer configuration signaling is used to indicate whether to support a high order quadrature amplitude modulation (QAM) modulation mode, where the high order QAM modulation mode is greater than 64QAM Modulation method.
- QAM quadrature amplitude modulation
- a channel state information reporting unit configured to send channel state information to the base station, where the channel state information includes at least channel quality indication (CQI) information, when the high layer configuration signaling indicates that the high order QAM modulation mode is not supported, The CQI information is obtained based on a first CQI table that does not support a high-order QAM modulation mode. When the high-level configuration signaling indicates that the high-order QAM modulation mode is not supported, the CQI information is based on a second mode that supports a high-order QAM modulation mode. The CQI form is available.
- CQI channel quality indication
- a control information receiving and detecting unit configured to receive and detect downlink control signaling sent by the base station, where the downlink control signaling includes at least a modulation and coding mode domain (/ MCS ), and the high-level configuration signaling indication does not support high
- the modulation and coding mode field (/ MCS ) is determined based on a first modulation and transport block size (TBS) index table that does not support high-order QAM; when high-level configuration signaling indicates support for high-order QAM modulation In the mode, the modulation and coding mode field is determined based on the second modulation and TBS index table supporting high order QAM.
- the terminal device in the embodiment of the present invention supports the transmission and feedback of the MQAM well, and the MQAM is well supported under the condition that the existing system is compatible, the signaling overhead is not increased, the transmission and the feedback are guaranteed, and the system is improved.
- the modulation processing method, the base station, and the terminal in the embodiment of the present invention ensure high-order QAM modulation on the basis of being compatible with the existing wireless transmission network by indicating whether high-level configuration signaling of the high-order QAM is supported, and ensuring consistency of feedback and transmission. , thereby improving the data peak rate and spectral efficiency, on the other hand, whether to use high-order QAM switching support, supporting high-order QAM transmission under high-order QAM conditions (such as small cells, low interference), is not suitable for high High-order QAM transmission is not supported under the order QAM condition (such as macro station).
- the embodiment of the present invention supports high-order QAM modulation based on the existing wireless transmission network by indicating whether high-level configuration signaling of high-order QAM is supported, and improves data peak rate and spectrum efficiency.
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EP13872027.1A EP2933969B1 (en) | 2013-01-18 | 2013-10-30 | Modulation processing method and device |
ES13872027.1T ES2694104T3 (es) | 2013-01-18 | 2013-10-30 | Procedimiento y dispositivo de procesamiento de modulación |
RU2015132033A RU2615763C2 (ru) | 2013-01-18 | 2013-10-30 | Способ и устройство для обработки данных о модуляции |
BR112015017291-1A BR112015017291B1 (pt) | 2013-01-18 | 2013-10-30 | Método e dispositivo de processamento de modulação |
AU2013373901A AU2013373901B2 (en) | 2013-01-18 | 2013-10-30 | Modulation processing method and device |
KR1020157019700A KR101746317B1 (ko) | 2013-01-18 | 2013-10-30 | 변조 처리 방법 및 장치 |
JP2015552982A JP6067137B2 (ja) | 2013-01-18 | 2013-10-30 | 変調処理方法及び装置 |
EP18183040.7A EP3419237B1 (en) | 2013-01-18 | 2013-10-30 | Modulation processing method and device |
US14/761,899 US9794022B2 (en) | 2013-01-18 | 2013-10-30 | Modulation processing method and device |
US15/694,311 US10218456B2 (en) | 2013-01-18 | 2017-09-01 | Modulation processing method and device |
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US11764897B2 (en) | 2013-06-08 | 2023-09-19 | Huawei Technologies Co., Ltd. | Notification method and apparatus for channel quality indicator and modulation and coding scheme |
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Publication number | Publication date |
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JP6067137B2 (ja) | 2017-01-25 |
CN103944855B (zh) | 2018-08-17 |
EP2933969B1 (en) | 2018-08-22 |
EP2933969A1 (en) | 2015-10-21 |
JP2016509787A (ja) | 2016-03-31 |
BR112015017291B1 (pt) | 2022-10-11 |
BR112015017291A2 (zh) | 2017-10-03 |
EP2933969A4 (en) | 2016-03-02 |
US9794022B2 (en) | 2017-10-17 |
KR20150097777A (ko) | 2015-08-26 |
ES2694104T3 (es) | 2018-12-18 |
US20150372784A1 (en) | 2015-12-24 |
AU2013373901A1 (en) | 2015-08-06 |
AU2013373901B2 (en) | 2016-12-15 |
KR101746317B1 (ko) | 2017-06-27 |
RU2015132033A (ru) | 2017-02-27 |
US20170366298A1 (en) | 2017-12-21 |
RU2615763C2 (ru) | 2017-04-11 |
EP3419237A2 (en) | 2018-12-26 |
US10218456B2 (en) | 2019-02-26 |
EP3419237B1 (en) | 2024-07-10 |
CN103944855A (zh) | 2014-07-23 |
EP3419237A3 (en) | 2019-04-24 |
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