WO2016019741A1 - Procédé pour traiter des informations d'indication de qualité/état de canal, appareil, terminal et station de base - Google Patents

Procédé pour traiter des informations d'indication de qualité/état de canal, appareil, terminal et station de base Download PDF

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Publication number
WO2016019741A1
WO2016019741A1 PCT/CN2015/077537 CN2015077537W WO2016019741A1 WO 2016019741 A1 WO2016019741 A1 WO 2016019741A1 CN 2015077537 W CN2015077537 W CN 2015077537W WO 2016019741 A1 WO2016019741 A1 WO 2016019741A1
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WIPO (PCT)
Prior art keywords
channel quality
indication information
status indication
measurement signal
determining
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PCT/CN2015/077537
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English (en)
Chinese (zh)
Inventor
王瑜新
孙云锋
李儒岳
弓宇宏
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中兴通讯股份有限公司
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Publication of WO2016019741A1 publication Critical patent/WO2016019741A1/fr

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices

Definitions

  • the present invention relates to the field of communications, and in particular, to a channel quality/status indication information processing method, apparatus, terminal, and base station.
  • FIG. 1 is a schematic diagram of the target terminal being interfered by the neighboring cell in the related art.
  • the traditional solution is to use frequency reuse, by making the adjacent cells different. Carrier frequency to avoid interference problems between adjacent cells.
  • the frequency reuse coefficient is 1, that is, the neighboring cells use the same carrier frequency, and the inter-cell interference problem is also higher than the traditional frequency.
  • the multiplexing system is complex.
  • Long Term Evolution (LTE) is a system based on OFDM technology. It mainly uses inter-cell interference randomization, interference avoidance and coordination techniques to solve interference problems. It is transmitted through network-side precoding and cooperative scheduling.
  • the sender-based interference coordination largely depends on the accuracy of the channel state information (CSI). Due to the limitation of feedback signaling overhead and the delay of feedback processing, the delay of the backhaul link will greatly affect the effect of inter-cell cooperation.
  • the LTE system based on the method of sender interference coordination cannot completely solve the interference problem. How to effectively eliminate and suppress interference between cells and between users is an important direction for further effective improvement of spectrum efficiency.
  • a common reference signal (Common Reference Signal, CRS for short) is used for pilot measurement and data demodulation, that is, all users use CRS for channel estimation.
  • CRS Common Reference Signal
  • the transmitting end needs to additionally notify the specific precoding matrix (also referred to as precoding weight) information used by the receiving end for data transmission, and the overhead of the pilot is large.
  • precoding matrix also referred to as precoding weight
  • DMRS Demodulation Reference Signal
  • CSI-RS Channel State Information Referenced Signal
  • CQI Channel Quaulity Information
  • MCS Modulation and Coding Scheme
  • the DMRS is mainly used for channel estimation of a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH for short) and an enhanced physical downlink control channel (ePDCCH) to complete data/control channel demodulation.
  • the transmission of the DMRS carries the precoding information of the corresponding PDSCH/ePDCCH.
  • LTE and LTE-A systems can be classified into Frequency Division Duplex (FDD) and Time Division Duplex (TDD) systems, FDD and TDD systems according to the uplink and downlink duplex modes.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the patterns of CSI-RS and DMRS will vary.
  • E-LMMSE-IRC Enhanced-Minimum Mean Square Error-Interference Rejection Combining
  • IC Interference Cancellation
  • ML Maximum Likelihood
  • the network side needs to provide the target UE with the DMRS port information used by the interfering UE and the initialization parameters of the DMRS (including the scrambling code ID, the virtual cell ID, the physical cell ID, etc.)
  • the network side needs to provide the above-mentioned information required by the MMSE-IRC, and also needs to provide the modulation mode or MCS information of the interference source.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution Advanced
  • link adaptation adopts the combination of link adaptation and outer loop adaptation of the inner loop. method.
  • the inner loop link adaptation Inner Loop Link Adaptation, ILLA for short
  • ILLA Inner Loop Link Adaptation
  • SINR measured signal to interference plus noise ratio
  • ILLA does not always adapt well to channels (such as channel fast change), so Outer Loop Link Adaptation (OLLA) is also necessary.
  • OLLA Outer Loop Link Adaptation
  • the goal of OLLA is to achieve the target block error rate BLER by adjusting the MCS selection.
  • the base station can determine the current BLER by counting the HARQ-ACK fed back by the UE, so this method is based on hybrid automatic weight.
  • the control signaling that needs to be transmitted in the uplink has an Acknowledgement/Negative Acknowledgement (ACK/NACK) and a Channel State Information (CSI).
  • ACK/NACK Acknowledgement/Negative Acknowledgement
  • CSI Channel State Information
  • the three types are: Channels quality indication (CQI), Pre-coding Matrix Indicator (PMI), and Rank Indicator (RI).
  • the Channel Quality Indicator plays a key role in the link adaptation process, which is a message sent by the UE to the eNodeB to describe the downlink channel quality of the current UE.
  • the UE can measure the reference symbols sent by the base station and then calculate the CQI.
  • CQI is an indicator used to measure the quality of downlink channels.
  • the CQI is represented by an integer value of 0 to 15, which respectively represent different CQI levels, and different CQIs correspond to respective MCSs, as shown in Table 1.
  • the selection of CQI levels should follow the following guidelines:
  • the selected CQI level should be such that the block error rate of the PDSCH transport block corresponding to the CQI under the corresponding MCS does not exceed 0.1.
  • 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 transmitted in the uplink subframe n, and the CQI has a sequence number ranging from 1 to 15 and satisfies Under the following conditions, if the CQI sequence number 1 does not satisfy the condition, the CQI sequence number is 0: the error rate BLER does not exceed 0.1 when a single PDSCH transport block is received, 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 refers to a maximum CQI value when the BLER is not greater than 0.1, which is advantageous for controlling resource allocation.
  • the smaller the CQI value the more resources are occupied and the better the BLER performance.
  • BLER is the error rate of the transport block, and BLER is equal to the correctly transmitted TB divided by the total number of TBs transmitted;
  • the joint information of the transport block size and the modulation scheme corresponding to one CQI sequence number if: according to the relevant transport block size, the joint information of the PDSCH transmission in the CQI reference resource can be signaled, and:
  • the modulation scheme is characterized by the CQI sequence number and uses the joint information including the transport block size and the modulation scheme in the reference resource, and the effective channel coding rate generated is the most likely effective channel coding rate that can be characterized by the CQI sequence number. .
  • 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 is shown in Table 1.
  • the encoding rate can be calculated based on the transport block size and the size of the NPRB.
  • the receiving end uses only the advanced receiver for demodulation when demodulating the target data, and the conventional receiver is used when calculating the channel quality for calculating the CQI, for example, the maximum ratio combining receiver, The minimum mean square error-interference rejection combined receiver, zero-forcing receiver, etc. Therefore, the CQI fed back by the receiving end is not the highest CQI when the BLER is guaranteed to be 0.1, resulting in link adaptive mismatch, that is, using OLLA.
  • the outer loop is adjusted, but because the adjustment speed of OLLA is very slow, it is also impossible to solve the problem of link adaptive mismatch.
  • the embodiments of the present invention provide a method, a device, a terminal, and a base station for processing channel quality/status indication information, so as to at least solve the problem that the link adaptive mismatch occurs when the receiving end uses the advanced receiver.
  • a channel quality/status indication information processing method including: receiving a measurement signal; determining channel quality/status indication information according to the measurement signal by at least one of: Receiving, by the receiving method, the measurement signal on the same or different subframes to determine the channel quality/status indication information; determining the channel quality/status indication information according to different interference assumptions and the measurement signal; The status information CSI process index and the measurement signal determine the channel quality/status indication information; and the determined channel quality/status indication information is sent to the base station.
  • the receiving method includes at least one of: using interference cancellation/suppression, and not using interference cancellation/suppression.
  • the measurement signal includes at least one of the following: a common reference signal, a channel state information reference signal, an interference measurement resource signal, and a data shared channel signal.
  • the different subframes include: two sets of CSI subframes.
  • the two sets of CSI subframes include: a subframe set having almost empty subframe ABS configuration information and a subframe set having no ABS configuration information.
  • determining channel quality/status indication information according to the measurement signal includes at least one of: receiving, according to a method that does not use interference cancellation/suppression, on a subframe of the CSI subframe set 0. Determining, by the measurement signal, a first type of channel quality/status indication information, determining, on a subframe of the CSI subframe set 1, a second channel quality/state according to the measurement signal received by using a method that does not use interference cancellation/suppression Instructing information; determining, on a subframe of the CSI subframe set 0, a first type of channel quality/status indication information according to the measurement signal received by a method that does not use interference cancellation/suppression, in the CSI subframe set 1 The second channel quality/status indication information is determined according to the measurement signal received by the method using interference cancellation/suppression; and the interference cancellation/suppression is used on the subframe of the CSI subframe set 0
  • the measurement signal received by the method determines a first type of channel quality/status indication information,
  • the interference hypothesis includes at least one of the following: interference in a cell in which multiple users are multiplexed; interference between cells in which multiple users are multiplexed; interference in a cell in which multiple users are multiplexed There is no inter-cell interference for multi-user multiplexing.
  • the interference hypothesis includes at least one of the following: interference is based on QPSK modulation, interference is based on 16QAM modulation, interference is based on 64QAM modulation, interference is based on 256QAM modulation, and interference is based on transmission of demodulation reference signals.
  • interference is based on the transmission mode of the common reference signal.
  • determining channel quality/status indication information according to the measurement signal includes at least one of: when the transmission mode is configured as the transmission mode 10, determining multiple types by using configuration information or indexes of multiple channel state information processes.
  • Channel quality/status indication information when the transmission mode is configured to one of transmission mode 1 to transmission mode 9, determining the first channel quality/state indication information on the CSI subframe set 0 subframe, at CSI
  • the second channel quality/status indication information is determined on the subframe of subframe set 1.
  • a channel quality/status indication information processing method including: receiving channel quality/status indication information sent by a terminal, where the channel quality/status indication information is used by the terminal Determining, according to the measurement signal, that the channel quality/status indication information is determined according to one or more receiving methods by receiving the measurement signals on the same or different subframes; according to different interference assumptions and The measurement signal determines the channel quality/status indication information; according to channel state information CSI The process index and the measurement signal determine the channel quality/status indication information; determine a modulation and coding mode of the data according to the channel quality/status indication information; and send the determined modulation and coding mode to the terminal.
  • a channel quality/status indication information processing apparatus including: a first receiving module configured to receive a measurement signal; and a first determining module configured to be at least one of: Determining channel quality/status indication information according to the measurement signal: determining, according to one or more receiving methods, the channel quality/status indication information by receiving the measurement signal on the same or different subframes; according to different interference assumptions and Determining, by the measurement signal, the channel quality/status indication information; determining the channel quality/status indication information according to the channel state information CSI process index and the measurement signal; and the first sending module is configured to determine the channel quality/ Status indication information is sent to the base station.
  • the first determining module includes at least one of the following: a first determining unit, configured to receive, according to a method not using interference cancellation/suppression, on a subframe of a CSI subframe set 0
  • the measurement signal determines a first type of channel quality/status indication information, and the second channel quality/status indication information is determined according to the measurement signal received by the method not using interference cancellation/suppression on a subframe of the CSI subframe set 1;
  • a second determining unit configured to determine, on a subframe of the CSI subframe set 0, the first type of channel quality/status indication information according to the measurement signal received by using no interference cancellation/suppression method, in the CSI subframe set 1 a second channel quality/status indication information is determined according to the measurement signal received by using the interference cancellation/suppression method; and the third determining unit is configured to use the subframe of the CSI subframe set 0 according to the use.
  • the measurement signal received by the interference cancellation/suppression method determines a first type of channel quality/status indication information, which is received on a subframe of the CSI subframe set 1 according to a method that does not use interference cancellation/suppression.
  • the measurement signal determines second channel quality/status indication information; and the fourth determining unit is configured to determine, on a subframe of the CSI subframe set 0, the first type according to the measurement signal received by using interference cancellation/suppression method Channel quality/status indication information, on the subframe of the CSI subframe set 1, determining the second channel quality/status indication information according to the measurement signal received by the method using interference cancellation/suppression.
  • the first determining module includes at least one of the following: a fifth determining unit, configured to determine, by using configuration information or indexes of multiple channel state information processes, when the transmission mode is configured as the transmission mode 10 Channel quality/status indication information; a sixth determining unit configured to determine the first channel on a subframe of the CSI subframe set 0 when the transmission mode is configured to one of the transmission mode 1 to the transmission mode 9
  • the quality/status indication information determines the second channel quality/status indication information on the subframe of the CSI subframe set 1.
  • a terminal comprising the apparatus of any of the above.
  • a channel quality/status indication information processing apparatus including: a second receiving module, configured to receive channel quality/status indication information sent by a terminal, where the channel The quality/status indication information is determined by the terminal by at least one of the following manners, determining, according to the measurement signal, determining the channel quality/status according to one or more receiving methods by receiving the measurement signals on the same or different subframes.
  • Instructing information determining the channel quality/status indication information according to different interference assumptions and the measurement signal; determining the channel quality/status indication information according to the channel state information CSI process index and the measurement signal; and the second determining module, And being configured to determine a modulation and coding mode of the data according to the channel quality/status indication information; and the second sending module is configured to send the determined modulation and coding mode to the terminal.
  • a base station including the apparatus described above.
  • the receiving measurement signal is adopted; determining channel quality/status indication information according to the measurement signal by at least one of: receiving the measurement on the same or different subframe according to one or more receiving methods Determining, by the signal, the channel quality/status indication information; determining the channel quality/status indication information according to different interference assumptions and the measurement signal; determining the channel quality/state according to the channel state information CSI process index and the measurement signal Instructing information; transmitting the determined channel quality/status indication information to the base station, and solving the related art, when the receiving end uses the advanced receiver, there is a problem of link adaptive mismatch, thereby achieving an effective solution to different use The problem of link adaptive mismatch caused by the receiver effectively improves the efficiency of the network spectrum.
  • FIG. 1 is a schematic diagram of a target terminal being interfered by a neighboring cell in the related art
  • FIG. 2 is a flowchart of a method for processing channel quality/status indication information according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for processing channel quality/status indication information according to an embodiment of the present invention
  • FIG. 4 is a structural block diagram of a channel quality/status indication information processing apparatus 1 according to an embodiment of the present invention.
  • FIG. 5 is a block diagram 1 of a preferred structure of the first determining module 44 in the channel quality/status indication information processing apparatus 1 according to an embodiment of the present invention
  • FIG. 6 is a block diagram 2 of a preferred structure of the first determining module 44 in the channel quality/status indication information processing apparatus 1 according to an embodiment of the present invention
  • FIG. 7 is a structural block diagram of a terminal according to an embodiment of the present invention.
  • FIG. 8 is a structural block diagram of a channel quality/status indication information processing apparatus 2 according to an embodiment of the present invention.
  • FIG. 9 is a structural block diagram of a base station according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a channel quality/state indication information processing method according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps. :
  • Step S202 receiving a measurement signal, where the measurement signal may include multiple types, for example, may include at least one of the following: a common reference signal, a channel state information reference signal, an interference measurement resource signal, and a data sharing channel signal;
  • Step S204 determining channel quality/status indication information according to the measurement signal by at least one of: receiving measurements on the same or different subframes according to one or receiving method (for example, corresponding to one or more receivers)
  • the signal determines channel quality/status indication information
  • the receiving method may include multiple types, for example, may include at least one of: using interference cancellation/suppression, not using interference cancellation/suppression; determining according to different interference assumptions and measurement signals
  • Channel quality/status indication information wherein the different subframes may also be multiple, for example, may be two Channel State Information (CSI) subframe sets, and the following is an example: a sub-frame set CSI0 sub- a frame, a subframe of the CSI subframe set 1, a subframe set having an Almost Blank Subframe (abbreviated as ABS) configuration information, a subframe set having no ABS configuration information, and a CSI process index according to the channel state information.
  • CSI Channel State Information
  • Step S206 the determined channel quality/status indication information is sent to the base station.
  • the user terminal solves the problem that the link adaptive mismatch occurs when the receiving end uses the advanced receiver by feeding back a plurality of channel quality/status indication information, thereby achieving an effective solution to different receiving uses.
  • the problem of link adaptive mismatch caused by the machine effectively improves the efficiency of the network spectrum.
  • Determining the channel quality/status indication information according to the measurement signal may be performed in various manners. For example, at least one of the following may be adopted: for example, in the subframe of the CSI subframe set 0, according to the interference cancellation/inhibition not used.
  • the measurement signal received by the method determines the first channel quality/status indication information, and determines, on the subframe of the CSI subframe set 1, the second channel quality/status indication according to the measurement signal received by the method without interference cancellation/suppression.
  • the first channel quality/status indication information is determined according to the measurement signal received by the method without interference cancellation/suppression, on the subframe of the CSI subframe set 1 Determining the second channel quality/status indication information according to the measurement signal received by the method using interference cancellation/suppression; for example, on the subframe of the CSI subframe set 0, the measurement signal received according to the method using interference cancellation/suppression Determining a first type of channel quality/status indication information, and determining, on a subframe of the CSI subframe set 1, a second channel quality/status indication information according to a measurement signal received by using no interference cancellation/suppression method; for example, The subframe of the CSI subframe set 0 determines the first channel quality/status indication information according to the measurement signal received by the method using interference cancellation/suppression, and uses interference cancellation/suppression on the subframe of the CSI subframe set 1 The measured signal received by the method determines the second channel quality/status indication
  • the interference assumption may also be in multiple forms, for example, may be interference in a cell with multi-user multiplexing; inter-cell interference with multi-user multiplexing; or in a cell without multi-user multiplexing Interference; there may be interference between cells without multi-user multiplexing; interference is based on QPSK modulation; interference is based on 16QAM modulation; interference is based on 64QAM modulation; interference is based on 256QAM modulation; interference is based on demodulation reference signal Transmission mode; interference is based on the transmission mode of the common reference signal.
  • the channel quality/status indication information is determined according to the measurement signal
  • various manners may also be adopted according to different transmission modes.
  • the transmission mode is configured as the transmission mode 10
  • configuration information of multiple channel state information processes may be adopted or
  • the index determines a plurality of channel quality/status indication information; and, for example, when the transmission mode is configured to one of transmission mode 1 to transmission mode 9, determining the first channel quality on the subframe of the CSI subframe set 0 / status indication information, determining second channel quality/status indication information on a subframe of the CSI subframe set 1;
  • FIG. 3 is a flowchart of a method for processing channel quality/status indication information according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:
  • Step S302 Receive channel quality/status indication information sent by the terminal, where the channel quality/status indication information is determined by the terminal according to at least one of the following manners, according to the measurement signal: receiving the same or different subframe according to one or more receiving methods
  • the upper measurement signal determines channel quality/status indication information; determines channel quality/state indication information according to different interference assumptions and measurement signals; determines channel quality/state indication information according to the channel state information CSI process index and the measurement signal;
  • Step S304 determining a modulation and coding mode of the data according to the channel quality/status indication information
  • Step S306 the determined modulation and coding mode is sent to the terminal.
  • the user terminal solves the problem that the link adaptive mismatch occurs when the receiving end uses the advanced receiver by feeding back a plurality of channel quality/status indication information, thereby achieving an effective solution to different receiving uses.
  • the problem of link adaptive mismatch caused by the machine effectively improves the efficiency of the network spectrum.
  • a channel quality/status indication information processing apparatus is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 4 is a structural block diagram of a channel quality/status indication information processing apparatus 1 according to an embodiment of the present invention. As shown in FIG. 4, the apparatus includes a first receiving module 42, a first determining module 44, and a first sending module 46. The device will be described.
  • the first receiving module 42 is configured to receive the measurement signal.
  • the first determining module 44 is connected to the first receiving module 42 and configured to determine channel quality/status indication information according to the measurement signal by using at least one of the following methods: Or receiving, by the plurality of receiving methods, measurement signals on the same or different subframes to determine channel quality/state indication information; determining channel quality/state indication information according to different interference assumptions and measurement signals; determining according to channel state information CSI process index and measurement signals Channel quality/status indication information; the first sending module 46 is connected to the first determining module 44, and configured to send the determined channel quality/status indication information to the base station.
  • the first determining module 44 includes at least one of the following: The determining unit 52, the second determining unit 54, the third determining unit 56, and the fourth determining unit 58 are described below.
  • the first determining unit 52 is configured to determine, according to the measurement signal received by using the interference cancellation/suppression method, on the subframe of the CSI subframe set 0, the first channel quality/status indication information is in the CSI subframe set 0.
  • the second channel quality/status indication information is determined according to the measurement signal received by the method without interference cancellation/suppression; the second determining unit 54 is set to be in the subframe of the CSI subframe set 0, according to not using
  • the measurement signal received by the interference cancellation/suppression method determines the first channel quality/status indication information, and determines the second channel quality according to the measurement signal received by the interference cancellation/suppression method on the subframe of the CSI subframe set 0.
  • a third determining unit 56 on the subframe of the CSI subframe set 0, determining the first channel quality/status indication information according to the measurement signal received by using the interference cancellation/suppression method, Decoding, on the subframe of the CSI subframe set 1, the second channel quality/status indication information according to the measurement signal received by the method that does not use interference cancellation/suppression; the fourth determining unit 58, setting CSI in the subframe 0 of subframe set, based on interference cancellation / suppression method of receiving The measurement signal determines the first channel quality/status indication information, and the second channel quality/status indication information is determined according to the measurement signal received by the method using interference cancellation/suppression on the subframe of the CSI subframe set 0.
  • FIG. 6 is a block diagram of a preferred structure of the first determining module 44 in the channel quality/status indication information processing apparatus 1 according to an embodiment of the present invention.
  • the first determining module 44 includes at least one of the following: The determining unit 62 and the sixth determining unit 64 are described below for the first determining module 44.
  • the fifth determining unit 62 is configured to determine, according to the configuration information or index of the multiple channel state information processes, a plurality of channel quality/status indication information when the transmission mode is configured as the transmission mode 10; the sixth determining unit 64 is configured to transmit When the mode is configured as one of the transmission mode 1 to the transmission mode 9, determining the first channel quality/status indication information on the subframe of the CSI subframe set 0, determining on the subframe of the CSI subframe set 1 The second channel quality/status indication information.
  • FIG. 7 is a structural block diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 7, the terminal 70 includes the channel quality/status indication information processing apparatus 72 of any of the above.
  • FIG. 8 is a structural block diagram of a channel quality/status indication information processing apparatus 2 according to an embodiment of the present invention. As shown in FIG. 8, the apparatus includes a second receiving module 82, a second determining module 84, and a second sending module 86. The device will be described.
  • the second receiving module 82 is configured to receive channel quality/status indication information sent by the terminal, where the channel quality/status indication information is determined by the terminal according to at least one of the following manners, according to the measurement signal: receiving according to one or more receiving methods Determining channel quality/status indication information by measuring signals on the same or different subframes; determining channel quality/state indication information according to different interference assumptions and measurement signals; determining channel quality/status indication information according to channel state information CSI process index and measurement signals.
  • the second determining module 84 is connected to the second receiving module 82, and is configured to determine a modulation and coding mode of the data according to the channel quality/status indication information; the second sending module 86 is connected to the second determining module 84, and is configured to The determined modulation and coding mode is sent to the terminal.
  • FIG. 9 is a structural block diagram of a base station according to an embodiment of the present invention. As shown in FIG. 9, the base station 90 includes the channel quality/status indication information processing device 92 of any of the above.
  • a processing scheme of feedback information is provided, which can solve the problem of link adaptive mismatch existing when the receiving end uses an advanced receiver.
  • the solution is applied to the terminal, comprising: receiving, by the terminal, a measurement signal, and determining channel quality/status indication information according to the measurement signal; wherein the terminal separately receives measurement signals in the same subframe or different subframes by using one or more receiving methods Determining a plurality of channel quality/status indication information, or determining, by the terminal, a plurality of channel quality/status indication information based on measurement signals on different subframes, or determining, by the terminal, a plurality of channel quality/status indication signals based on a plurality of different interference hypotheses
  • the measurement signal includes at least one of the following: a common reference signal, a channel state information reference signal, an interference measurement resource signal, and a data shared channel signal;
  • the terminal transmits channel quality/status indication information to the base station.
  • the above-mentioned receiver includes a plurality of receiving methods, for example, interference cancellation/inhibition may be used, or interference cancellation/inhibition may not be used.
  • the terminal determines multiple channel quality/status indication information based on signals on different subframes, where the different subframes may also be in multiple forms, for example, a subframe including a CSI subframe set 0, and a sub-cID of the CSI subframe set 1.
  • the terminal determines multiple channel quality/status indication information based on a plurality of different interference assumptions, where the interference hypothesis may also include multiple types, for example, may include at least one of the following: presence of multi-user multiplexing or intra-cell or inter-cell Interference, there is no multi-user multiplexing or intra-cell or inter-cell interference, wherein the interference may be based on multiple modulation modes, for example, may be based on QPSK modulation, may be based on 16QAM modulation, or may be based on 64QAM The modulation may also be based on 256QAM modulation.
  • the interference may be a transmission mode based on a demodulation reference signal or a transmission mode based on a common reference signal.
  • the terminal determines that one channel quality/status indication information may include multiple types, for example, may include at least one of the following types:
  • the terminal receives the measurement signal without using interference cancellation/suppression on the subframe of the CSI subframe set 0 to determine a channel quality/state indication information, and does not use interference cancellation/suppression on the subframe of the CSI subframe set 1.
  • the method receives the measurement signal to determine another channel quality/status indication information; on the subframe of the CSI subframe set 1, the measurement signal is received without using the interference cancellation/suppression method to determine a channel quality/state indication information, at the CSI On the subframe of the subframe set 1, the measurement signal is received using the interference cancellation/suppression method to determine another channel quality/state indication information; on the subframe of the CSI subframe set 1, the measurement is received using the interference cancellation/suppression method The signal determines a channel quality/status indication information, and on the subframe of the CSI subframe set 1, the measurement signal is received using the interference cancellation/suppression method to determine another channel quality/status indication information.
  • multiple channel quality/status indication information may be determined through configuration information or indexes of multiple CSI (Channel Status Information) processes; when the terminal is configured as transmission mode 1 To one of the transmission modes 9, one channel quality/status indication information may be determined on a subframe of the CSI subframe set 0, and another channel quality may be determined on the subframe of the CSI subframe set 1 / Status indication information.
  • CSI Channel Status Information
  • the method for processing the feedback information may also be applied to the base station, including: the base station receiving the multiple channel quality/status indication information sent by the terminal, determining the modulation and coding mode MCS of the data information, and indicating to the terminal.
  • the processing method based on the foregoing feedback information mainly includes: receiving a measurement signal, and determining channel quality/status indication information according to the measurement signal; wherein the measurement signal comprises: a common reference signal, a channel state information reference signal, an interference measurement resource signal, a data sharing channel signal; wherein the terminal separately receives signals in the same subframe or different subframes using one or more receiving methods to determine multiple channel quality/state indication information, or the terminal determines more based on measurement signals on different subframes Channel quality/status indication information, or the terminal determines multiple channel quality/status indication information based on a plurality of different interference hypotheses; the terminal transmits channel quality/status indication information to the base station, and the base station receives multiple channel qualities sent by the terminal/ The status indication information determines the modulation and coding mode MCS of the data information and indicates to the terminal.
  • the measurement signal comprises: a common reference signal, a channel state information reference signal, an interference measurement resource signal, a data sharing channel signal
  • the terminal separately receives signals in
  • the user terminal solves the problem of link adaptation mismatch caused by using different types of receivers in the data demodulation phase and the channel measurement phase by the user terminal by feeding back multiple channel quality/status indication information.
  • the technology of the advanced receiver is widely used in the downlink transmission of LTE-A, thereby improving the spectrum efficiency of the network.
  • the terminal does not use the interference cancellation/suppression method to receive the measurement signal, determines the CQI 1 on the CSI subframe set 0 subframe, and determines the CQI on the CSI subframe set 1 subframe. 2;
  • the terminal does not use the interference cancellation/suppression method to receive the measurement signal on the subframe of the CSI subframe set 0 to determine the CQI 1, and to receive the measurement signal using the interference cancellation/suppression method on the CSI subframe set 1 subframe to determine the CQI 2;
  • the terminal uses the interference cancellation/suppression method to receive the measurement signal on the subframe of the CSI subframe set 0 to determine the CQI 1, and to receive the measurement signal without using the interference cancellation/suppression method on the subframe of the CSI subframe set 1 to determine the CQI 2 ;
  • the terminal uses the interference cancellation/suppression method to receive the measurement signal on the subframe of the CSI subframe set 0 to determine the CQI 1, and to receive the measurement signal using the interference cancellation/suppression method on the subframe of the CSI subframe set 1 to determine the CQI 2;
  • the terminal feeds back the CQI 1 and the CQI 2 to the base station, and the base station determines the modulation and coding mode MCS of the data information according to the CQI 1 and the CQI 2, and indicates to the terminal by using the downlink control signaling.
  • the measurement signal includes at least one of the following: a common reference signal, a channel state information reference signal, an interference measurement resource signal, and a data shared channel signal.
  • multiple channel quality/status indication information is determined through configuration information or indexes of multiple CSI (Channel Status Information) processes;
  • the first channel quality/status indication information is determined by using the interference cancellation/suppression method on the CSI process with index 0, and the second channel quality is determined by using the interference cancellation/suppression method on the CSI process with index 1.
  • / Status indication information or, using the interference cancellation/suppression method on the CSI process with index 0 to determine the first channel quality/status indication information, and determining not using interference cancellation/suppression on the CSI process with index 1 Second channel quality/status indication information;
  • the terminal When the terminal is configured to transmit one of the mode 1 to the transmission mode 9, determining one channel quality/status indication information on the subframe of the CSI subframe set 0, determining on the subframe of the CSI subframe set 1 Another channel quality/status indication information;
  • the terminal determines multiple channel quality/status indication information based on a plurality of different interference hypotheses, where the interference hypothesis includes: there is multi-user multiplexing or intra-cell or inter-cell interference, and there is no multi-user complex With or with intra-cell or inter-cell interference, the interference is based on QPSK modulation, the interference is based on 16QAM modulation, the interference is based on 64QAM modulation, the interference is based on 256QAM modulation, the interference is based on the transmission mode of the demodulation reference signal, and the interference is based on a common reference. Signal transmission mode.
  • the interference hypothesis includes: there is multi-user multiplexing or intra-cell or inter-cell interference, and there is no multi-user complex With or with intra-cell or inter-cell interference, the interference is based on QPSK modulation, the interference is based on 16QAM modulation, the interference is based on 64QAM modulation, the interference is based on 256QAM modulation, the interference is based on the transmission
  • the terminal determines CQI 1 based on the presence of multi-user multiplexing or intra-cell or inter-cell interference, and determines CQI 2 based on the absence of multi-user multiplexing or intra-cell or inter-cell interference; or, based on assumptions
  • the interference is determined in the case of QPSK modulation, CQI 1 is determined based on the assumption that the interference is 16QAM or 64QAM modulation; or CQI1 is determined on the assumption that the interference is based on the transmission mode of the demodulation reference signal, based on the assumption that the interference is based on the common CQI 2 is determined in the case of a reference signal.
  • the terminal feeds back CQI 1 and CQI 2 to the base station, and the base station determines the coded modulation mode MCS of the data information according to CQI 1 and CQI 2, and indicates to the terminal by using downlink control signaling.
  • modules or steps of the embodiments of the present invention can be implemented by a general computing device, which can be concentrated on a single computing device or distributed in multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from The steps shown or described are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
  • the above embodiments and preferred embodiments solve the problem that the link adaptive mismatch occurs when the receiving end uses the advanced receiver, thereby achieving an effective solution to the use of different receivers.
  • the problem of link adaptive mismatch is effective in improving the efficiency of network spectrum.

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

Abstract

La présente invention concerne un procédé pour traiter des informations d'indication de qualité/état de canal, un appareil, un terminal et une station de base. Le procédé consiste à : recevoir des signaux de mesure; déterminer les informations d'indication de qualité/état de canal sur la base des signaux de mesure par au moins l'une des manières suivantes consistant à : déterminer les informations d'indication de qualité/état de canal sur la base des signaux de mesure reçus dans les mêmes sous-trames ou des sous-trames différentes par l'intermédiaire d'une ou de multiples manières de réception; déterminer les informations d'indication de qualité/état de canal sur la base de différentes suppositions de brouillage et des signaux de mesure; déterminer les informations d'indication de qualité/état de canal sur la base de l'index de traitement d'informations d'état de canal (CSI) et des signaux de mesure; et transmettre les informations d'indication de qualité/état de canal déterminées à la station de base. La présente invention résout le problème de non-correspondance d'auto-adaptation de liaison dans la technique associée lorsqu'une extrémité de réception utilise un récepteur de niveau élevé, et parvient aux effets selon lesquels le problème de non-correspondance d'auto-adaptation de liaison induit par utilisation de différents récepteurs est résolu de manière efficace et l'efficacité de spectre de réseau est améliorée de manière efficace.
PCT/CN2015/077537 2014-08-08 2015-04-27 Procédé pour traiter des informations d'indication de qualité/état de canal, appareil, terminal et station de base WO2016019741A1 (fr)

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