WO2020038082A1 - 一种确定码字映射方式的方法及装置 - Google Patents
一种确定码字映射方式的方法及装置 Download PDFInfo
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- WO2020038082A1 WO2020038082A1 PCT/CN2019/090970 CN2019090970W WO2020038082A1 WO 2020038082 A1 WO2020038082 A1 WO 2020038082A1 CN 2019090970 W CN2019090970 W CN 2019090970W WO 2020038082 A1 WO2020038082 A1 WO 2020038082A1
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- Prior art keywords
- network
- side device
- codeword
- mapping mode
- transmission
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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
- H04B7/0413—MIMO systems
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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
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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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
Definitions
- the present application relates to the field of communications technologies, and in particular, to a method and device for determining a codeword mapping mode.
- 5G the fifth generation mobile phone mobile communication standard, also known as the fifth generation mobile communication technology
- 4G the fifth generation mobile communication technology
- 5G will penetrate into all areas of the future society, and build a comprehensive information ecosystem with users as the center.
- MIMO technology can increase the peak rate (or peak spectral efficiency) through the parallel transmission of data in the spatial domain.
- a corresponding modulation and coding scheme MCS
- MCS modulation and coding scheme
- the codeword mapping method used in the prior art is a peer-to-peer mapping method, that is, the number of layers corresponding to each codeword is as equal as possible. When the number of layers is even, the number of layers of each codeword is the same; when the number of layers is odd, the number of layers of codeword 0 is one less than that of codeword 1.
- the multipoint coordinated transmission technology is still an important technical means in the NR system.
- Downlink data is usually transmitted through multiple transmission points / multiple transmission planes.
- the codeword mapping method in the prior art because the transmission quality of each transmission point is uneven, the mapping effect is affected, and the performance of downlink data transmission is lost.
- the present application provides a method for determining a codeword mapping mode, which is used to solve the problem that the transmission quality of each transmission point is unbalanced in the prior art, which affects the mapping effect and causes performance loss of downlink data transmission.
- An embodiment of the present application provides a method for determining a codeword mapping mode, including: a network-side device determines the number N of demodulation reference signal port groups DMRS port groups occupied by downlink transmission data sent to a terminal, where N is greater than or equal to 1;
- the network-side device determines that the codeword transmission method corresponding to the downlink transmission data is dual codeword transmission, determines the downlink transmission data according to the number of DMRS port groups N occupied by the downlink transmission data. Corresponding codeword mapping mode.
- the network-side device determines the codeword mapping method by using the number of DMRS port groups actually occupied by one data channel. Compared with the standard codeword mapping method used in the prior art, it can take into account the different transmission points. Transmission quality, thereby reducing the performance loss of downstream data transmission.
- the determining, by the network-side device, the number of DMRS port groups occupied by downlink transmission data sent to the terminal includes:
- the information includes: the number of DMRS ports recommended by the terminal, the codeword mapping method recommended by the terminal, and the number of transmission layers supported by each transmission point.
- the network-side device may determine the number of DMRS port groups occupied by the downlink transmission data by using various types of information, which may be obtained by the network side itself or reported by the terminal side.
- the method further includes:
- the network-side device measures the uplink signal to determine the number of transmission layers supported by each transmission point.
- the network-side device needs to first receive an uplink signal sent by the terminal, and determine the number of transmission layers supported by each transmission point according to the uplink signal.
- the method further includes:
- the network-side device receives the channel state information CSI reported by the terminal, and the CSI includes the number of transmission layers supported by each transmission point; the number of transmission layers supported by each transmission point is the terminal-to-network-side device And obtained by measurement by using a downlink signal sent by the at least one transmission point.
- the network-side device needs to first receive the CSI sent by the terminal, and determine the transmission according to the number of transmission layers supported by each transmission point carried in the CSI. Number of DMRS port groups occupied by downlink transmission data to the terminal.
- the method further includes:
- a recommendation message reported by the terminal including a recommended number of DMRS ports and / or a recommended codeword mapping method; the recommended number of DMRS ports and / or The recommended codeword mapping mode is determined after the terminal performs measurement according to a downlink signal sent by the network-side device to the at least one transmission point.
- the network-side device may also determine the number of DMRS port groups occupied by the downlink transmission data according to the recommended number of DMRS port groups in the recommendation message reported by the terminal and / or the recommended codeword mapping mode.
- the method further includes:
- the network-side device determines that the number of transmission layers of the downlink shared channel PDSCH is greater than one.
- the network-side device determines that the transmission layer of the downlink shared channel PDSCH is equal to 1, that is, dual codeword transmission cannot be performed, so the premise of the method for determining the codeword mapping method is that the number of transmission layers of the downlink shared channel PDSCH is greater than 1. .
- the determining, by the network-side device, the number of DMRS port groups occupied by downlink transmission data sent to the terminal includes:
- the network-side device determines that the number of transmission layers supported by each transmission point is greater than or equal to 1, determining that the number of DMRS port groups occupied by the downlink transmission data is greater than or equal to 2;
- the network-side device determines that only one transmission point supports more than or equal to one transmission layer, it determines that the number of DMRS port groups occupied by the downlink transmission data is one.
- the network-side device determines the number of DMRS port groups occupied by downlink transmission data according to the number of layers supported by each transmission point, that is, the network-side device can determine the codeword mapping mode according to the transmission quality of each transmission point. .
- the method further includes:
- the network-side device determines that the number of transmission layers of the PDSCH is greater than one.
- the transmission is performed by using a single-codeword single-layer transmission method in the prior art.
- the codeword mapping mode corresponding to the downlink transmission data includes:
- mapping mode I and mapping mode II mapping mode I and mapping mode II
- mapping method I if the number of transmission layers of the PDSCH is even, the number of transmission layers corresponding to each codeword is equal;
- the number of transmission layers of the PDSCH is even and odd, the number of transmission layers of codeword 0 is one less than the number of transmission layers of codeword 1;
- N0 + N1 the number of transmission layers of the PDSCH, where N0 is greater than or equal to 1, N1 is greater than or equal to 1, N0 is the number of transmission layers of codeword 0, and N1 is the number of transmission layers of codeword 1. .
- the mapping method I is a mapping method that is as equal as possible, and the mapping method II does not limit the number of transmission layers corresponding to two codewords. It can be a mapping method that is equivalent or a non-equivalence. Way of mapping.
- the determining, by the network-side device according to the number of DMRS port groups occupied by the downlink transmission data, a codeword mapping manner corresponding to the downlink transmission data includes:
- the network-side device determines that the number of DMRS port groups occupied by the downlink transmission data is greater than or equal to 2, it determines that a codeword mapping mode corresponding to the downlink transmission data is mapping mode II.
- the codeword mapping mode when it is determined that the number of DMRS port groups is greater than or equal to 2, in order to consider the channel conditions of different DMRS port groups corresponding to each codeword, the codeword mapping mode can be directly determined as the mapping mode II.
- the determining, by the network-side device according to the number of DMRS port groups occupied by the downlink transmission data, a codeword mapping manner corresponding to the downlink transmission data includes:
- the network-side device determines that the number of DMRS port groups occupied by the downlink transmission data is equal to 2, determining whether the number of transmission layers corresponding to the two DMRS port groups meets a preset rule, and the preset rule is the network side Determined by the device according to the number of transmission layers of the PDSCH;
- the network-side device determines that the number of transmission layers corresponding to the two DMRS ports meets the preset rule, it determines that the codeword mapping mode corresponding to the downlink transmission data is mapping mode II.
- the number of DMRS ports is greater than or equal to 2
- the number of transmission layers corresponding to the two DMRS ports is determined. If the preset rule is satisfied, the code is determined according to the channel conditions of different DMRS ports. Word mapping.
- the preset rule is that the sum of the transport layers corresponding to each DMRS port group satisfies a preset set, where the value range of the elements in the preset set is [1, ..., RI_MAX], so RI_MAX is the maximum number of transmission layers of the PDSCH; or
- the preset rule is that the difference between the number of transmission layers corresponding to the two DMRS ports is greater than or equal to two.
- the determining, by the network-side device, a codeword mapping manner corresponding to the downlink transmission data according to the number of DMRS port groups N occupied by the downlink transmission data includes:
- the network-side device determines that the number of DMRS ports that the downlink transmission data occupies is equal to 1, it determines that the codeword mapping mode corresponding to the downlink transmission data is mapping mode I according to the number of transmission layers of the PDSCH.
- mapping is performed using the mapping method I that is as equal as possible.
- the method further includes:
- the network-side device transmits the codeword mapping mode to the terminal through a signaling mode or an implicit mode, so that the terminal demodulates data according to the codeword mapping mode.
- the network-side device after determining the codeword mapping mode, sends the codeword mapping mode to the terminal, and the terminal performs data analysis according to the determined codeword mapping mode.
- each DMRS port in the DMRS port group has a QCL relationship.
- the large-scale parameters of the reference signal channels of the DMRS ports in the DMRS port group are the same.
- An embodiment of the present application further provides a method for determining a codeword mapping mode, where the method includes:
- the network-side device receives a recommendation message reported by the terminal, where the recommendation message includes a recommended number of DMRS ports and / or a recommended codeword mapping mode; the recommended number of DMRS ports and / or the recommended codeword mapping
- the method is determined after the terminal performs measurement according to a downlink signal sent by the network-side device through at least one transmission point;
- the network-side device determines a codeword mapping mode for downlink transmission data according to the recommended number of DMRS ports and / or the recommended codeword mapping mode.
- the network side device determines a codeword mapping mode for downlink transmission data according to the recommended number of DMRS ports and / or recommended codeword mapping modes reported by the terminal, that is, the network side device can determine the codeword mapping mode based on the recommended message reported by the terminal.
- the transmission quality of each transmission point determines different codeword mapping methods according to different transmission qualities. Compared with the prior art, the transmission quality of different transmission points can be considered, thereby reducing the performance loss of downlink data transmission.
- the determining, by the network-side device, a codeword mapping mode of downlink transmission data according to the recommended number of DMRS ports and / or the recommended codeword mapping mode includes:
- the network-side device Determining, by the network-side device, the codeword mapping mode of the downlink transmission data according to the recommended number of DMRS ports, the recommended codeword mapping mode, and implementation configuration parameters, where the implementation configuration parameters are based on the The implementation of the network-side device is determined as described above.
- the network-side device in addition to determining the codeword mapping method according to the number of DMRS ports recommended by the terminal and the recommended codeword mapping method, the network-side device also needs to determine the codeword of the downlink transmission data according to the implementation of the network-side device. Mapping method.
- the determining, by the network-side device, the codeword mapping mode of the downlink transmission data according to the recommended number of DMRS ports, the recommended codeword mapping mode, and implementation configuration parameters includes:
- the network-side device Determining, by the network-side device, the codeword mapping mode of the downlink transmission data and the DMRS occupied by the downlink transmission data according to the recommended number of DMRS ports, the recommended codeword mapping mode, and the implementation configuration parameter The number of port groups.
- the network-side device may also determine the number of DMRS port groups occupied by the downlink transmission data according to the recommendation message.
- This application also provides a method for determining a codeword mapping mode, including:
- a terminal receiving a downlink signal sent by a network-side device through at least one transmission point
- the terminal reports the measurement data to the network-side device, so that the network-side device determines a codeword mapping manner corresponding to downlink transmission data according to the measurement data.
- the terminal determines the measurement data according to the downlink signal, and reports the measurement data to the network-side device.
- the network-side device determines the codeword mapping method according to the measurement data, and can perform the codeword mapping method determined by the network-side device.
- data demodulation can consider the transmission quality of different transmission points, thereby reducing the performance loss of downlink data transmission.
- the measurement data includes at least one of the following information:
- the measurement data reported by the terminal may be the number of transmission layers supported by each transmission point measured by the terminal, or may be the number of DMRS port groups and codeword mapping methods determined by the terminal.
- the terminal reports at least one piece of the above information to A network-side device, so that the network-side device determines a codeword mapping mode according to the foregoing information.
- the measurement data is the number of transmission layers supported by each transmission point
- the terminal reporting the measurement data to the network-side device includes: the terminal reporting the number of transmission layers supported by each transmission point Adding to the channel state information CSI, and reporting the CSI to the network-side device.
- the terminal adds measurement data to the CSI information, and then reports the CSI information to the network-side device.
- the method before the terminal receives the downlink signal sent by the network-side device through at least one transmission point, the method further includes:
- the terminal determines that the number of transmission layers of the downlink shared channel PDSCH is greater than one.
- the transmission layer of the downlink shared channel PDSCH is equal to 1, only one codeword can be transmitted, and the peer-to-peer mapping method corresponding to the standard in the prior art is used for transmission.
- An embodiment of the present application further provides a device for determining a codeword mapping mode, including:
- DMRS port group number determining unit configured to determine the number of demodulation reference signal port groups DMRS port group N occupied by downlink transmission data sent to the terminal, where N is greater than or equal to 1;
- a codeword mapping mode determining unit is configured to determine, if the codeword transmission mode corresponding to the downlink transmission data is dual codeword transmission, the network-side device determines the number according to the number of DMRS port groups N occupied by the downlink transmission data. The codeword mapping mode corresponding to the downlink transmission data is described.
- the codeword mapping method is determined according to the number of DMRS port groups occupied by downlink data, and the codeword mapping method used is determined by the number of DMRS port groups actually occupied by one data channel. Compared with the specification to determine the codeword mapping mode, the transmission quality of different transmission points can be considered, thereby reducing the performance loss of downlink data transmission.
- the DMRS port group determining unit is specifically configured to:
- the information includes: the number of DMRS ports recommended by the terminal, the codeword mapping method recommended by the terminal, and the number of transmission layers supported by each transmission point.
- the DMRS port group determining unit is further configured to:
- the DMRS port group determining unit is further configured to:
- the CSI includes the number of transmission layers supported by each transmission point; the number of transmission layers supported by each transmission point is the terminal-to-network-side device to the at least one transmission point
- the downlink signals sent are measured.
- the DMRS port group determining unit is further configured to:
- the recommendation message including a recommended number of DMRS ports and / or a recommended codeword mapping method; the recommended number of DMRS ports and / or the recommended The codeword mapping mode is determined after the terminal performs measurement according to a downlink signal sent by a network-side device through the at least one transmission point.
- the DMRS port group determining unit is specifically configured to:
- the number of DMRS port groups occupied by the downlink transmission data is determined to be 1.
- the DMRS port group determining unit is further configured to:
- the codeword mapping mode corresponding to the downlink transmission data includes:
- mapping mode I and mapping mode II mapping mode I and mapping mode II
- mapping method I if the number of transmission layers of the PDSCH is even, the number of transmission layers corresponding to each codeword is equal; if the number of transmission layers of the PDSCH is even, the transmission layer of codeword 0 The number is one less than the number of transmission layers of codeword 1;
- N0 + N1 the number of transmission layers of the PDSCH, where N0 is greater than or equal to 1, N1 is greater than or equal to 1, N0 is the number of transmission layers of codeword 0, and N1 is the number of transmission layers of codeword 1. .
- the codeword mapping mode determining unit is specifically configured to:
- a codeword transmission mode corresponding to the downlink transmission data is a mapping mode II.
- the codeword mapping mode determining unit is specifically configured to:
- mapping mode II If it is determined that the number of transmission layers corresponding to the two DMRS ports meets the preset rule, it is determined that the codeword mapping mode corresponding to the downlink transmission data is mapping mode II.
- the preset rule is that the sum of the transport layers corresponding to each DMRS port group satisfies a preset set, where the value range of the elements in the preset set is [1, ..., RI_MAX], so RI_MAX is the maximum number of transmission layers of the PDSCH; or
- the preset rule is that the difference between the number of transmission layers corresponding to the two DMRS ports is greater than or equal to two.
- the codeword mapping mode determining unit is specifically configured to:
- the codeword mapping mode corresponding to the downlink transmission data is determined to be mapping mode I according to the number of PDSCH transmission layers.
- the codeword mapping mode determining unit is further configured to:
- each DMRS port in the DMRS port group has a QCL relationship.
- An embodiment of the present application further provides an electronic device, including:
- At least one processor and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, So that the at least one processor can execute the method in any one of the foregoing embodiments.
- An embodiment of the present application further provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to cause the computer to execute any one of the foregoing embodiments. method.
- An embodiment of the present application further provides a device for determining a codeword mapping mode, including:
- a receiving unit configured to receive a recommendation message reported by a terminal, the recommendation message including a recommended number of DMRS ports and / or a recommended codeword mapping mode; the recommended number of DMRS ports and / or the recommended code
- the word mapping mode is determined after the terminal performs measurement according to a downlink signal sent by a network-side device through at least one transmission point;
- a codeword mapping mode determining unit is configured to determine a codeword mapping mode of downlink transmission data according to the recommended number of DMRS ports and / or the recommended codeword mapping mode.
- the codeword mapping mode of downlink transmission data is determined according to the recommended number of DMRS ports and / or the recommended codeword mapping mode reported by the terminal, that is, the transmission quality of each transmission point is determined according to the recommended message reported by the terminal. Different codeword mapping modes are determined according to different transmission qualities. Compared with the prior art, the performance loss of downlink data transmission can be reduced.
- the codeword mapping mode determining unit is specifically configured to:
- the codeword mapping mode determining unit is specifically configured to:
- An embodiment of the present application further provides an electronic device, including:
- At least one processor and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, So that the at least one processor can execute the method in any one of the foregoing embodiments.
- An embodiment of the present application further provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to cause the computer to execute any one of the foregoing embodiments. method.
- An embodiment of the present application further provides a method for determining a codeword mapping mode, including:
- a downlink signal receiving unit configured to receive a downlink signal sent by a network-side device through at least one transmission point
- a measurement data determining unit configured to determine measurement data according to the downlink signal
- a reporting unit configured to report the measurement data to the network-side device, so that the network-side device determines a codeword mapping manner corresponding to downlink transmission data according to the measurement data.
- the measurement data is determined according to the downlink signal, and the measurement data is reported to the network-side device.
- the network-side device determines the codeword mapping method based on the measurement data, and can perform data through the codeword mapping method determined by the network-side device. Compared with the prior art, demodulation can consider the transmission quality of different transmission points, thereby reducing the performance loss of downlink data transmission.
- the measurement data includes at least one of the following information:
- the measurement data is the number of transmission layers supported by each transmission point
- the reporting unit is specifically configured to:
- the measurement data determining unit is further configured to:
- An embodiment of the present application further provides an electronic device, including:
- At least one processor and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, So that the at least one processor can execute the method in any one of the foregoing embodiments.
- An embodiment of the present application further provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to cause the computer to execute any one of the foregoing embodiments. method.
- FIG. 1 is a schematic structural diagram of a communication architecture according to an embodiment of the present application.
- FIG. 2 is a schematic flowchart of a method for determining a codeword mapping method according to an embodiment of the present application
- mapping manner I provided by an embodiment of the present application.
- mapping manner II provided by an embodiment of the present application.
- FIG. 5 is a schematic flowchart of a method for determining a codeword mapping method according to an embodiment of the present application
- FIG. 6 is a schematic flowchart of a method for determining a codeword mapping method according to an embodiment of the present application
- FIG. 7 is a schematic flowchart of a method for determining a codeword mapping method according to an embodiment of the present application.
- FIG. 8 is a schematic flowchart of a method for determining a codeword mapping method according to an embodiment of the present application
- FIG. 9 is a schematic flowchart of a method for determining a codeword mapping method according to an embodiment of the present application.
- FIG. 10 is a schematic structural diagram of a device for determining a codeword mapping manner according to an embodiment of the present application.
- FIG. 11 is a schematic structural diagram of a device for determining a codeword mapping manner according to an embodiment of the present application.
- FIG. 12 is a schematic structural diagram of a device for determining a codeword mapping manner according to an embodiment of the present application.
- FIG. 13 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
- FIG. 14 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
- FIG. 15 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
- FIG. 1 is a schematic diagram of a network structure applied in an embodiment of the present application; as shown in FIG. 1, it includes a network-side device 101 and a terminal 102.
- the network-side device 101 may be an evolved base station (eNB, evolved NodeB) or another base station. It should be noted that the specific type of the network-side device 101 is not limited in the embodiments of the present application.
- the network-side device 101 can establish communication with the terminal 102.
- the terminal 102 can be a mobile phone, a tablet computer, a laptop computer, a personal digital assistant (PDA), and a mobile Internet device (Mobile). Terminal devices such as Internet Device (MID) or Wearable Device (Wearable Device), it should be noted that the specific type of the terminal 102 is not limited in the embodiment of the present application.
- MID Internet Device
- Wearable Device Wearable Device
- an embodiment of the present application provides a method for determining a codeword mapping mode, as shown in FIG. 2, including:
- Step 201 The network-side device determines the number N of demodulation reference signal port groups DMRS port group occupied by downlink transmission data sent to the terminal, where N is greater than or equal to one;
- Step 202 If the network-side device determines that the codeword transmission mode corresponding to the downlink transmission data is dual codeword transmission, the network-side device determines the number N according to the number of DMRS port groups occupied by the downlink transmission data. Codeword mapping mode corresponding to downlink transmission data.
- the network-side device performs data transmission with the terminal through at least one transmission point.
- each transmission point may be a cooperative TRP (Transmission / Receiption Point) or may be Cooperative antenna panels.
- signals sent by different TRPs / panels may have relatively independent large-scale features, such as average delay, delay spread, and average Doppler shift. , Doppler extension, and airspace reception parameters. Therefore, in the NR system, a case where two or more reference signal channel large-scale parameters are consistent is called a quasi-co-location QCL. Otherwise, it is called non-QCL.
- each DMRS port in the DMRS port group has a QCL relationship, that is, each DMRS port in the group QCL.
- the DMRS ports in the same CDM group also have a QCL relationship.
- each data channel supports a maximum of two DMRS ports.
- one DMRS port group can be transmitted through one transmission point or two transmission points, and the DMRS ports corresponding to the two transmission points also have a QCL relationship.
- the codeword mapping mode since there is no problem that the channel quality of the number of layers corresponding to the two codewords is greatly different during single codeword transmission, a method in the prior art may be used to determine the codeword mapping mode. Therefore, in the embodiment of the present application, first, it is determined that the codeword transmission mode corresponding to the downlink transmission data is double codeword transmission.
- the number of DMRS port groups occupied by the downlink transmission data may be used to determine a codeword transmission mode corresponding to the downlink transmission data.
- method 1 if the network-side device determines that the number of DMRS port groups occupied by the downlink transmission data is greater than or equal to 2, it determines that the codeword transmission mode corresponding to the downlink transmission data is dual codeword transmission;
- Method 2 If the network-side device determines that the number of DMRS port groups occupied by the downlink transmission data is greater than or equal to 2, it determines whether the number of transmission layers supported by each transmission point meets a preset rule, and the preset rule is The network-side device determines according to the number of transmission layers of the PDSCH;
- the network-side device determines that the number of transmission layers supported by each transmission point meets the preset rule, it determines that a codeword transmission mode corresponding to the downlink transmission data is dual codeword transmission.
- Method 3 If the network-side device determines that the number of DMRS port groups occupied by the downlink transmission data is equal to 1, determine the codeword transmission mode corresponding to the downlink transmission data according to the number of transmission layers of the PDSCH.
- the network side device determines the codeword mapping method according to the number of DMRS port groups occupied by the downlink transmission data.
- One is In the prior art, a mapping method that is as equal as possible and a mapping method determined according to different channel qualities are used.
- mapping modes determined according to different channel qualities that is, the number of layers corresponding to codeword 0 in FIG. 4 is three, and the number of layers corresponding to codeword 1 is two.
- mapping method I a nearly equivalent mapping method is hereinafter referred to as a mapping method I.
- mapping mode II The mapping mode determined according to the channel quality is referred to as the mapping mode II.
- the network-side device allocates a certain number of parallel data streams to each scheduled terminal, and each of the data streams is called a layer.
- each codeword to be transmitted is mapped into at least one data layer and transmitted through at least one data layer.
- one downlink data transmission channel supports a maximum of 8 layers of data transmission.
- the downlink The data transmission channel is the downlink shared channel PDSCH.
- both the network side device and the terminal device may determine the number of transmission layers supported by the PDSCH.
- the network side device and the terminal device determine the number of transmission layers supported by the PDSCH according to the channel quality of the PDSCH.
- the codeword mapping is performed using the equivalent codeword mapping method specified in the existing technical specifications.
- the network-side device determines the number of DMRS port groups, and determines the codeword mapping mode according to the number.
- mapping mode I when it is determined that the number of transmission layers supported by the PDSCH is greater than 1, mapping mode I may be described as: if the number of transmission layers of the PDSCH is even, the number of transmission layers corresponding to each codeword is equal If the number of PDSCH transmission layers is even and odd, the number of transmission layers of codeword 0 is one less than the number of transmission layers of codeword 1.
- the network-side device may determine the number of DMRS port groups occupied by downlink transmission data according to at least one of the following information:
- the number of DMRS ports recommended by the terminal is determined after the terminal measures the downlink signal sent by the network-side device through the at least one transmission point; the codeword mapping method recommended by the terminal is the terminal It is determined after measurement according to a downlink signal sent by the network-side device through the at least one transmission point; the number of transmission layers supported by each transmission point may be determined by the terminal or determined by the network-side device.
- the terminal may determine the number of transmission layers supported by each transmission point according to measurement data measured by a downlink signal sent by the network-side device through the at least one transmission point, and determine the number of transmission layers. Escalation.
- the terminal adds the number of transmission layers supported by each transmission point determined by the measurement to the channel state information CSI, and reports the CSI to the network side.
- the network side After receiving the CSI of the terminal, the network side determines the number of transmission layers supported by each transmission point.
- the network-side device receives an uplink signal sent by the terminal through at least one transmission point, and determines the number of transmission layers supported by each transmission point according to measurement data of the uplink signal.
- the number of transmission layers supported by each transmission point determined by the network-side device may be different from the number of transmission layers supported by each terminal determined by the terminal.
- the scheme for the network-side device to determine the number of DMRS port groups occupied by downlink transmission data according to at least one piece of information includes:
- the network-side device determines the number of DMRS port groups occupied by downlink transmission data according to the number of DMRS port groups recommended by the terminal;
- the network-side device determines the number of DMRS port groups occupied by downlink transmission data according to the number of codeword mapping methods recommended by the terminal;
- the network-side device determines the number of DMRS port groups occupied by downlink transmission data according to the determined number of transmission layers supported by each transmission point;
- the network-side device determines the number of DMRS port groups occupied by the downlink transmission data according to the combination of any two of the above three pieces of information;
- the network-side device determines the number of DMRS port groups occupied by the downlink transmission data according to the combination of the above three pieces of information.
- the network-side device in addition to determining the number of DMRS port groups occupied by downlink transmission data according to at least one of the three types of information described above, the network-side device needs to determine the number of downlink transmission data occupied by other information.
- the number of DMRS ports in addition to determining the number of DMRS port groups occupied by downlink transmission data according to at least one of the three types of information described above, the network-side device needs to determine the number of downlink transmission data occupied by other information. The number of DMRS ports.
- other information may be reference information corresponding to a network-side implementation.
- the network-side implementation is a reliability mode
- other information is reference information corresponding to a reliability mode.
- the network-side device may determine the number of DMRS port groups occupied by downlink transmission data according to at least one of the foregoing information.
- the network side determines that the number of transmission layers supported by each transmission point is greater than or equal to 1, based on the above information, it is determined that the number of DMRS port groups occupied by downlink transmission data is greater than or equal to 2; if it is determined that there is only one The number of transmission layers supported by the transmission point is greater than or equal to 1, then it is determined that the number of DMRS port groups occupied by downlink transmission data is 1.
- each PDSCH data channel supports transmission of at least two DMRS ports.
- mapping mode I when the network side determines that the number of DMRS port groups is 1, the mapping is performed according to a peer codeword mapping manner specified in a specification in the prior art. That is, when the number of DMRS port groups is determined to be 1, the double codewords are transmitted through a DMRS port group, and there will be no imbalance in channel quality corresponding to different DMRS port groups. Therefore, it is determined using the provisions of the existing technology
- the codeword mapping mode is mapping mode I.
- the network-side device determines that the number of DMRS port groups occupied by the downlink transmission data is greater than or equal to 2, it determines that two codewords can be transmitted through at least two DMRS port groups There may be an imbalance in channel quality corresponding to different DMRS port groups.
- the following uses the number of DMRS port groups as 2 as an example.
- the network side device directly determines the mapping mode as the mapping mode II;
- the network-side device determines whether the number of transmission layers corresponding to the two DMRS ports meets a preset rule, and the preset rule is determined by the network-side device according to the number of transmission layers of the PDSCH. If the number of transmission layers corresponding to the DMRS port group meets the preset rule, it is determined that the codeword mapping mode corresponding to the downlink transmission data is mapping mode II; otherwise, it is determined that the codeword mapping mode corresponding to the downlink transmission data is mapping mode I.
- the preset rule satisfies a preset set for a total of transport layers corresponding to each DMRS port group, and an element in the preset set ranges from [1 ,. .., RI_MAX], where RI_MAX is the maximum number of transmission layers of the PDSCH; or
- the preset rule is that the difference between the number of transmission layers corresponding to the two DMRS ports is greater than or equal to two.
- the preset rule for the preset rule, the total number of transmission layers corresponding to the two DMRS port groups is first determined, and the preset set is determined according to the number of PDSCH transmission layers. Understand the first preset rule, here is an example, as shown in Figure 5,
- Step 501 The network-side device according to the sum of the number of transmission layers corresponding to the two DMRS ports and the number of transmission layers of the PDSCH;
- step 502 the network device determines whether the sum of the number of transmission layers corresponding to the two DMRS ports belongs to the set X, and if it belongs to X, step 503 is performed, otherwise step 504 is performed;
- Step 503 The network-side device determines that the codeword mapping mode is mapping mode II.
- Step 504 The network-side device determines that the codeword mapping mode is mapping mode I.
- the set X is predefined, and the elements in the set X are positive integers taken from 1 to RI_max, where RI_max is the maximum number of PDSCH transmission layers.
- the relationship between the difference between the number of transmission layers supported by each transmission point and 2 is determined.
- an example is illustrated here, for example, as shown in FIG. 6 As shown,
- Step 601 The network-side device determines a difference in the number of layers according to the number of transmission layers corresponding to the two DMRS ports, and the network-side device determines the number of PDSCH transmission layers;
- Step 602 The network device determines whether the difference in the number of layers is greater than or equal to 2. If it is Y, step 603 is performed, otherwise step 604 is performed;
- Step 603 The network-side device determines that the codeword mapping mode is mapping mode II.
- Step 604 The network-side device determines that the codeword mapping mode is mapping mode I.
- a codeword mapping manner may also be determined in the foregoing manner, and details are not described herein.
- the network-side device after the network-side device determines the codeword mapping mode, the network-side device passes the codeword mapping mode to the terminal through a signaling method or a bank method, and the terminal receives the codeword After the mapping mode, determine the method of demodulating the data in order to receive the downlink data.
- the network-side device determines the number of transmission layers supported by each transmission point through the uplink signal sent by the terminal, and if the network-side device determines that the number of DMRS port groups occupied by the downlink transmission data is equal to 2, a preset rule is used To determine the codeword mapping method, in the preset rule, the maximum in the X set is 8, and the specific steps are shown in Figure 7:
- Step 701 The network-side device determines the number of PDSCH transmission layers according to the status of the PDSCH.
- step 702 the network-side device determines whether the number of transmission layers of the PDSCH is greater than 1, and if it is greater than 1, then executes step 704; otherwise, executes step 703;
- Step 703 The network-side device determines that the codeword mapping mode is mapping mode I, and executes step 705.
- Step 704 The network-side device determines the number of transmission layers supported by each transmission point according to the uplink signal sent by the terminal, and executes step 706.
- Step 705 The network-side device transmits the codeword mapping mode to the terminal.
- Step 706 The network-side device determines whether the number of transmission layers supported by each transmission point is greater than or equal to 1, and if so, executes step 708, otherwise executes step 707;
- Step 707 the network-side device determines that the number of DMRS port groups used is equal to 1, and executes step 703;
- Step 708 The network-side device determines that the number of DMRS port groups used is equal to two.
- step 709 the network-side device determines whether the sum of the number of transmission layers corresponding to the two DMRS ports belongs to the set of [1, ... 8], and if so, executes step 711; otherwise, executes step 703;
- step 710 the network determines that the codeword mapping mode is mapping mode II, and executes step 705.
- an embodiment of the present application further provides a transmission method, as shown in FIG. 8, including:
- Step 801 The network-side device receives a recommendation message reported by the terminal, where the recommendation message includes a recommended number of DMRS ports and / or a recommended codeword mapping mode; the recommended number of DMRS ports and / or the recommended The codeword mapping mode is determined after the terminal performs measurement according to a downlink signal sent by the network-side device through at least one transmission point;
- Step 802 The network-side device determines a codeword mapping mode for downlink transmission data according to the recommended number of DMRS ports and / or the recommended codeword mapping mode.
- the network-side device may determine the codeword mapping mode according to the following three modes.
- Method 1 The network-side device determines a codeword mapping method according to the number of DMRS port groups recommended by the terminal;
- Method 2 The network-side device determines a codeword mapping method according to the codeword mapping method recommended by the terminal;
- Method 3 The network-side device determines the codeword mapping method according to the codeword mapping method recommended by the terminal and the number of DMRS port groups recommended by the terminal.
- the network-side device further determines a single codeword mapping or a double codeword mapping according to the number of DMRS port groups recommended by the terminal, for example:
- the codeword mapping method is determined to be a single codeword mapping.
- the first determination method is The network side device directly determines to use the double codeword mapping mode;
- the second determination method is for the network-side device to determine whether the number of transmission layers supported by each transmission point meets a preset rule, which is determined by the network-side device according to the PDSCH status; if the network-side device determines If the number of transmission layers meets a preset rule, the codeword mapping mode corresponding to the downlink transmission data is determined to be a double codeword mapping; otherwise, the codeword mapping mode corresponding to the downlink transmission data is determined to be a double codeword mapping.
- the network side device determines the number of DMRS ports based on the codeword mapping method recommended by the terminal or the network side device determines the DMRS port based on the codeword mapping method recommended by the terminal and the number of DMRS port groups recommended by the terminal.
- the network-side device can not only determine the codeword mapping mode but also the number of DMRS port groups based on the recommendation message. For example, the network-side device determines the downlink data transmission using one codeword / two DMRS port groups determined by the recommendation message, or two codewords / two DMRS port groups for downlink data transmission, or two codewords / one DMRS A port group performs downlink data transmission, or a codeword / a DMRS port group performs downlink data transmission.
- the network-side device directly determines the codeword mapping mode according to at least one message of the recommendation message reported by the receiving terminal.
- the network-side device determines the number of DMRS port groups, The recommended codeword mapping mode and implementation configuration parameters determine the codeword mapping mode of the downlink transmission data, wherein the implementation configuration parameters are determined according to the implementation manner of the network-side device.
- the implementation configuration parameter is reference information corresponding to the implementation method on the network side.
- the configuration parameter is reference information corresponding to the reliability transmission.
- an embodiment of the present application provides a transmission method, as shown in FIG. 9, including:
- Step 901 The terminal receives a downlink signal sent by a network-side device through at least one transmission point.
- Step 902 The terminal determines measurement data according to the downlink signal.
- Step 903 The terminal reports the measurement data to the network-side device, so that the network-side device determines a codeword mapping mode corresponding to downlink transmission data according to the measurement data.
- a single codeword mapping method can be determined.
- the terminal receives a downlink signal sent by a network-side device through a downlink data transmission channel.
- the measurement data includes at least one of the following information:
- the number of DMRS port groups recommended by the terminal The number of DMRS port groups recommended by the terminal, the codeword mapping method recommended by the terminal, and the number of transmission layers supported by each transmission point.
- step 903 when the terminal determines the measurement data, the terminal adds the measurement data to the channel state information CSI, and reports it through the CSI.
- an embodiment of the present application further provides a transmission device, as shown in FIG. 10, including:
- DMRS port group determination unit 1001 configured to determine the number of demodulation reference signal port groups DMRS port group N occupied by downlink transmission data sent to the terminal, where N is greater than or equal to 1;
- the codeword mapping mode determining unit 1002 is configured to determine that the codeword transmission mode corresponding to the downlink transmission data is double codeword transmission, and then the network-side device determines the number according to the number N of DMRS port groups occupied by the downlink transmission data. The codeword mapping mode corresponding to the downlink transmission data is described.
- the DMRS port group determination unit 1001 is specifically configured to:
- the information includes: the number of DMRS ports recommended by the terminal, the codeword mapping method recommended by the terminal, and the number of transmission layers supported by each transmission point.
- the DMRS port group determination unit 1001 is further configured to:
- the DMRS port group determination unit 1001 is further configured to:
- the CSI includes the number of transmission layers supported by each transmission point; the number of transmission layers supported by each transmission point is the terminal-to-network-side device to the at least one transmission point
- the downlink signals sent are measured.
- the DMRS port group determination unit 1001 is further configured to:
- the recommendation message including a recommended number of DMRS ports and / or a recommended codeword mapping method; the recommended number of DMRS ports and / or the recommended The codeword mapping mode is determined after the terminal performs measurement according to a downlink signal sent by a network-side device through the at least one transmission point.
- the DMRS port group determination unit 1001 is specifically configured to:
- the number of DMRS port groups occupied by the downlink transmission data is determined to be 1.
- the DMRS port group determination unit 1001 is further configured to:
- the codeword mapping mode corresponding to the downlink transmission data includes:
- mapping mode I and mapping mode II mapping mode I and mapping mode II
- mapping method I if the number of transmission layers of the PDSCH is even, the number of transmission layers corresponding to each codeword is equal; if the number of transmission layers of the PDSCH is even, the transmission layer of codeword 0 The number is one less than the number of transmission layers of codeword 1;
- N0 + N1 the number of transmission layers of the PDSCH, where N0 is greater than or equal to 1, N1 is greater than or equal to 1, N0 is the number of transmission layers of codeword 0, and N1 is the number of transmission layers of codeword 1. .
- the codeword mapping mode determining unit 1002 is specifically configured to:
- a codeword transmission mode corresponding to the downlink transmission data is a mapping mode II.
- the codeword mapping mode determining unit 1002 is specifically configured to:
- mapping mode II If it is determined that the number of transmission layers corresponding to the two DMRS ports meets the preset rule, it is determined that the codeword mapping mode corresponding to the downlink transmission data is mapping mode II.
- the preset rule is that the sum of the transport layers corresponding to each DMRS port group satisfies a preset set, where the value range of the elements in the preset set is [1, ..., RI_MAX], so RI_MAX is the maximum number of transmission layers of the PDSCH; or
- the preset rule is that the difference between the number of transmission layers corresponding to the two DMRS ports is greater than or equal to two.
- the codeword mapping mode determining unit 1002 is specifically configured to:
- the codeword mapping mode corresponding to the downlink transmission data is determined to be mapping mode I according to the number of PDSCH transmission layers.
- the codeword mapping mode determining unit 1002 is specifically configured to:
- each DMRS port in the DMRS port group has a QCL relationship.
- an embodiment of the present application further provides a transmission device, as shown in FIG. 11, including:
- a receiving unit 1101 is configured to receive a recommendation message reported by a terminal, where the recommendation message includes a recommended number of DMRS ports and / or a recommended codeword mapping method; the recommended number of DMRS ports and / or the recommended The codeword mapping mode is determined after the terminal performs measurement according to a downlink signal sent by a network-side device through at least one transmission point;
- a codeword mapping mode determining unit 1102 is configured to determine a codeword mapping mode of downlink transmission data according to the recommended number of DMRS ports and / or the recommended codeword mapping mode.
- the codeword mapping mode determining unit 1102 is specifically configured to:
- the codeword mapping mode determining unit 1102 is specifically configured to:
- an embodiment of the present application further provides a transmission device, as shown in FIG. 12, including:
- a downlink signal receiving unit 1201, configured to receive a downlink signal sent by a network-side device through at least one transmission point;
- the reporting unit 1203 is configured to report the measurement data to the network-side device, so that the network-side device determines a codeword mapping manner corresponding to downlink transmission data according to the measurement data.
- the measurement data includes at least one of the following information:
- the measurement data is the number of transmission layers supported by each transmission point
- the reporting unit 1203 is specifically configured to:
- the measurement data determining unit 1202 is further configured to:
- this application also provides an electronic device, as shown in FIG. 13, including:
- It includes a processor 1301, a memory 1302, a transceiver 1303, and a bus interface 1304.
- the processor 1301, the memory 1302, and the transceiver 1303 are connected through a bus interface 1304.
- the processor 1301 is configured to read a program in the memory 1302 and execute the following methods:
- N Determine the number of demodulation reference signal port groups DMRS port group N occupied by downlink transmission data sent to the terminal, where N is greater than or equal to 1;
- the codeword mapping method corresponding to the downlink transmission data is determined according to the number of DMRS port groups N occupied by the downlink transmission data.
- the processor 1301 determines the number of DMRS port groups occupied by the downlink transmission data according to at least one of the following information;
- the information includes: the number of DMRS ports recommended by the terminal, the codeword mapping method recommended by the terminal, and the number of transmission layers supported by each transmission point.
- processor 1301 is further configured to:
- processor 1301 is further configured to:
- the CSI includes the number of transmission layers supported by each transmission point; the number of transmission layers supported by each transmission point is the number of transmission layers supported by the terminal to the network side
- the measurement is performed on a downlink signal sent by the device to the at least one transmission point.
- processor 1301 is further configured to:
- a recommendation message reported by the terminal including a recommended number of DMRS ports and / or a recommended codeword mapping method; the recommended number of DMRS ports and / Or, the recommended codeword mapping mode is determined after the terminal performs measurement according to a downlink signal sent by the network-side device through the at least one transmission point.
- the processor 1301 is specifically configured to:
- the number of DMRS port groups occupied by the downlink transmission data is determined to be 1.
- processor 1301 is further configured to:
- the codeword mapping mode corresponding to the downlink transmission data includes:
- mapping mode I and mapping mode II mapping mode I and mapping mode II
- mapping method I if the number of transmission layers of the PDSCH is even, the number of transmission layers corresponding to each codeword is equal; if the number of transmission layers of the PDSCH is even, the transmission layer of codeword 0 The number is one less than the number of transmission layers of codeword 1;
- N0 + N1 the number of transmission layers of the PDSCH, where N0 is greater than or equal to 1, N1 is greater than or equal to 1, N0 is the number of transmission layers of codeword 0, and N1 is the number of transmission layers of codeword 1. .
- the processor 1301 is specifically configured to:
- a codeword transmission mode corresponding to the downlink transmission data is a mapping mode II.
- the processor 1301 is specifically configured to:
- the network-side device determines that the number of transmission layers corresponding to the two DMRS ports meets the preset rule, it determines that the codeword mapping mode corresponding to the downlink transmission data is mapping mode II.
- the preset rule is that the sum of the transport layers corresponding to each DMRS port group satisfies a preset set, where the value range of the elements in the preset set is [1, ..., RI_MAX], so RI_MAX is the maximum number of transmission layers of the PDSCH; or
- the preset rule is that the difference between the number of transmission layers corresponding to the two DMRS ports is greater than or equal to two.
- the processor 1301 is specifically configured to:
- the codeword mapping mode corresponding to the downlink transmission data is determined to be mapping mode I according to the number of PDSCH transmission layers.
- processor 1301 is further configured to:
- the transceiver 1303 transmits the codeword mapping mode to the terminal through a signaling mode or an implicit mode, so that the terminal demodulates data according to the codeword mapping mode.
- An embodiment of the present application provides a computer program product.
- the computer program product includes a computing program stored on a non-transitory computer-readable storage medium.
- the computer program includes program instructions. When the program instructions are executed by a computer, , Causing the computer to execute any one of the methods for determining a codeword mapping mode.
- this application also provides an electronic device, as shown in FIG. 14, including:
- It includes a processor 1401, a memory 1402, a transceiver 1403, and a bus interface 1404.
- the processor 1401, the memory 1402, and the transceiver 1403 are connected through a bus interface 1404.
- the processor 1401 is configured to read a program in the memory 1402 and execute the following methods:
- the recommendation message including the recommended number of DMRS ports and / or the recommended codeword mapping mode; the recommended number of DMRS ports and / or the recommended The codeword mapping mode is determined after the terminal performs measurement according to a downlink signal sent by the network-side device through at least one transmission point;
- Determining a codeword mapping mode for downlink transmission data according to the recommended number of DMRS ports and / or the recommended codeword mapping mode.
- the processor 1401 is specifically configured to:
- the processor 1401 is specifically configured to:
- An embodiment of the present application provides a computer program product.
- the computer program product includes a computing program stored on a non-transitory computer-readable storage medium.
- the computer program includes program instructions. When the program instructions are executed by a computer, , Causing the computer to execute any one of the methods for determining a codeword mapping mode.
- this application also provides an electronic device, as shown in FIG. 15, including:
- It includes a processor 1501, a memory 1502, a transceiver 1503, and a bus interface 1504, where the processor 1501, the memory 1502, and the transceiver 1503 are connected through a bus interface 1504;
- the processor 1501 is configured to read a program in the memory 1502 and execute the following methods:
- the network-side device determines a codeword mapping manner corresponding to downlink transmission data according to the measurement data.
- the measurement data includes at least one of the following information:
- the measurement data is the number of transmission layers supported by each transmission point
- the processor 1501 is specifically configured to:
- the processor 1501 is further configured to:
- An embodiment of the present application provides a computer program product.
- the computer program product includes a computing program stored on a non-transitory computer-readable storage medium.
- the computer program includes program instructions. When the program instructions are executed by a computer, , Causing the computer to execute any one of the methods for determining a codeword mapping manner.
- These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to work in a particular manner such that the instructions stored in the computer-readable memory produce a manufactured article including an instruction device, the instructions
- the device implements the functions specified in one or more flowcharts and / or one or more blocks of the block diagram.
- These computer program instructions can also be loaded on a computer or other programmable data processing device, so that a series of steps can be performed on the computer or other programmable device to produce a computer-implemented process, which can be executed on the computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.
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Abstract
本申请提供一种确定码字映射方式的方法及装置,涉及通信技术领域,方法包括:网络侧设备确定发送至终端的下行传输数据占用的解调参考信号端口组DMRS port group的数量N,N大于或等于1;若所述网络侧设备确定所述下行传输数据对应的码字传输方式为双码字传输,则所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量N确定所述下行传输数据对应的码字映射方式。通过一个下行数据信道实际占用的DMRS port group的数量来确定使用哪一种映射方式,能够考虑到不同传输点的传输质量,从而减少下行数据传输的性能损失。
Description
相关申请的交叉引用
本申请要求在2018年08月20日提交中国专利局、申请号为201810949972.3、申请名称为“一种确定码字映射方式的方法及装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请涉及通信技术领域,尤其涉及一种确定码字映射方式的方法及装置。
移动和宽带成为现代通信技术的发展方向,5G,第五代移动电话行动通信标准,也称第五代移动通信技术,也是4G之后的延伸。作为新一代信息通讯发展的主要方向,5G将渗透到未来社会的各个领域,以用户为中心构建全方位的信息生态系统。
MIMO技术可以通过数据在空间域的并行传输提升峰值速率(或峰值频谱效率)。从理论上讲,可以根据MIMO链路中每个等效的数据传输通道的信道质量,分别为其选择相应的调制和编码格式(Modulation and Coding Scheme,MCS)以实现吞吐量的优化。与LTE系统类似,在NR MIMO系统设计过程中,首先面临的一个问题便是码字映射方式的选择问题。而这个问题在很大程度上影响到了诸多物理层技术方案的设计。
现有技术使用的码字映射方式为对等映射方式,即每个码字对应的层数尽可能对等。层数为偶数时,每个码字的层数相同;层数为奇数时,码字0的层数比码字1少一个。
但是在R-16标准化工作中,多点协作传输技术在NR系统中仍然是一种重要的技术手段,下行数据通常通过多个传输点/多传输面传输。而使用现有 技术中的码字映射方式,由于每个传输点的传输质量不均衡,影响映射效果,从而造成下行数据传输的性能损失。
发明内容
本申请提供一种确定码字映射方式的方法,用于解决现有技术中由于每个传输点的传输质量不均衡,影响映射效果,从而造成下行数据传输的性能损失的问题。
本申请实施例提供一种确定码字映射方式的方法,包括:网络侧设备确定发送至终端的下行传输数据占用的解调参考信号端口组DMRS port group的数量N,N大于或等于1;
若所述网络侧设备确定所述下行传输数据对应的码字传输方式为双码字传输,则所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量N确定所述下行传输数据对应的码字映射方式。
本申请实施例中,网络侧设备通过一个数据信道实际占用的DMRS port group的数量来确定码字映射方式,与现有技术中使用规范的码字映射方式相比,能够考虑到不同传输点的传输质量,从而减少下行数据传输的性能损失。
可选地,所述网络侧设备确定发送至终端的下行传输数据占用的DMRS port group的数量,包括:
所述网络侧设备根据以下信息中的至少一项,确定所述下行传输数据占用的DMRS port group的数量;
所述信息包括:所述终端推荐的DMRS port group数量、所述终端推荐的码字映射方式、各传输点支持的传输层数。
本申请实施例中,网络侧设备可以通过多种信息来确定下行传输数据占用的DMRS port group的数量,这些信息既可以是网络侧自己获得的,也可以是终端侧上报的。
可选地,所述网络侧设备确定发送至终端的下行传输数据占用的DMRS port group的数量之前,还包括:
所述网络侧设备接收所述终端向所述至少一个传输点发送的上行信号;
所述网络侧设备对所述上行信号进行测量,确定所述各传输点支持的传输层数。
本申请实施例中,如果各传输点支持的传输层数是网络侧设备确定的,则网络侧设备则需要首先接收终端发送的上行信号,根据上行信号确定各传输点支持的传输层数。
可选地,所述网络侧设备确定发送至终端的下行传输数据占用的DMRS port group的数量之前,还包括:
所述网络侧设备接收所述终端上报的信道状态信息CSI,所述CSI中包括各传输点支持的传输层数;所述各传输点支持的传输层数是所述终端对所述网络侧设备通过所述至少一个传输点发送的下行信号进行测量得到的。
本申请实施例中,如果各传输点支持的传输层数是终端确定的,则网络侧设备则需要首先接收终端发送的CSI,根据CSI中的携带的各传输点支持的传输层数来确定发送至终端的下行传输数据占用的DMRS port group的数量。
可选地,所述网络侧设备确定发送至终端的下行传输数据占用的DMRS port group的数量之前,还包括:
所述网络侧设备接收所述终端上报的推荐消息,所述推荐消息中包括推荐的DMRS port group数量,和/或,推荐的码字映射方式;所述推荐的DMRS port group数量,和/或,所述推荐的码字映射方式是所述终端根据所述网络侧设备向所述至少一个传输点发送的下行信号进行测量后确定的。
本申请实施例中,网络侧设备还可以根据终端上报的推荐消息中的推荐的DMRS port group数量,和/或,推荐的码字映射方式来确定下行传输数据占用的DMRS port group的数量。
可选地,所述网络侧设备确定发送至终端的下行传输数据占用的DMRS port group的数量之前,还包括:
所述网络侧设备确定下行共享信道PDSCH的传输层数大于1。
本申请实施例中,若网络侧设备确定下行共享信道PDSCH的传输层等于1,即不能进行双码字传输,所以确定码字映射方式的方法的前提是下行共享信道PDSCH的传输层数大于1。
可选地,所述网络侧设备确定发送至终端的下行传输数据占用的DMRS port group的数量,包括:
所述网络侧设备若确定每个传输点支持的传输层数都大于或等于1,则确定所述下行传输数据占用的DMRS port group的数量大于或等于2;
所述网络侧设备若确定只有一个传输点的支持的传输层数大于或等于1,则确定所述下行传输数据占用的DMRS port group的数量为1。
本申请实施例中,网络侧设备根据每个传输点支持的层数,确定下行传输数据占用的DMRS port group的数量,即网络侧设备能够根据每个传输点的传输质量来确定码字映射方式。
可选地,所述网络侧设备确定发送至终端的下行传输数据占用的解调参考信号端口组DMRS port group的数量N前,还包括:
所述网络侧设备确定PDSCH的传输层数大于1。
本申请实施例中,若确定PDSCH的传输层数等于1,则使用现有技术中的单码字单层传输的方式进行传输。
可选地,所述下行传输数据对应的码字映射方式,包括:
映射方式I以及映射方式II;
所述映射方式I中,若所述PDSCH的传输层数为偶数,则每个码字对应的传输层数相等;
若所述PDSCH的传输层数为偶数为奇数时,码字0的传输层数比码字1的传输层数少一层;
所述映射方式II中,N0+N1=PDSCH的传输层数,其中,N0大于或等于1,N1大于或等于1,N0为码字0的传输层数,N1为码字1的传输层数。
本申请实施例中,映射方式I为尽可能对等的映射方式,而映射方式II没有限定两个码字对应的传输层数的个数,可以是对等的映射方式,也可以是非对等的映射方式。
可选地,所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量确定所述下行传输数据对应的码字映射方式,包括:
所述网络侧设备若确定所述下行传输数据占用的DMRS port group的数量大于或等于2,则确定所述下行传输数据对应的码字映射方式为映射方式II。
本申请实施例中,当确定了DMRS port group的数量大于或等于2时,为了考虑每个码字对应的不同DMRS port group的信道条件,可以直接确定码字映射方式为映射方式II。
可选地,所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量确定所述下行传输数据对应的码字映射方式,包括:
所述网络侧设备若确定所述下行传输数据占用的DMRS port group的数量等于2,则确定两个DMRS port group对应的传输层数是否满足预设规则,所述预设规则是所述网络侧设备根据所述PDSCH的传输层数确定的;
所述网络侧设备若确定两个DMRS port group对应的传输层数满足所述预设规则,则确定所述下行传输数据对应的码字映射方式为映射方式II。
本申请实施例中,当确定了DMRS port group的数量大于或等于2后,确定两个DMRS port group对应的传输层数,若满足预设规则,则根据不同的DMRS port group的信道条件确定码字映射方式。
可选地,所述预设规则为每个DMRS port group对应的传输层的总和满足预设集合,其中所述预设集合中的元素取值范围为[1,...,RI_MAX],所述RI_MAX为所述PDSCH的最大传输层数;或
所述预设规则为两个DMRS port group对应的传输层数之差大于或等于2。
可选地,所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量N确定所述下行传输数据对应的码字映射方式,包括:
所述网络侧设备若确定所述下行传输数据占用的DMRS port group的数量等于1,则根据所述PDSCH的传输层数确定所述下行传输数据对应的码字映射方式为映射方式I。
本申请实施例中,若下行传输数据占用的DMRS port group的数量等于1,则两个码字是通过一个DMRS port group进行传输,则使用尽可能对等的映射方式I进行映射。
可选地,所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量确定所述下行传输数据对应的码字映射方式后,还包括:
所述网络侧设备将所述码字映射方式通过信令方式或者隐含方式传递给所述终端,以使所述终端按照所述码字映射方式解调数据。
本申请实施例中,网络侧设备在确定了码字映射方式后,将码字映射方式发送给终端,终端按照确定的码字映射方式进行数据解析。
可选地,所述DMRS port group中各DMRS端口具有QCL关系。
本申请实施例中,DMRS port group中各DMRS端口的参考信号信道大尺度参数一致。
本申请实施例还提供一种确定码字映射方式的方法,所述方法包括:
网络侧设备接收终端上报的推荐消息,所述推荐消息中包括推荐的DMRS port group数量和/或推荐的码字映射方式;所述推荐的DMRS port group数量和/或所述推荐的码字映射方式是所述终端根据所述网络侧设备通过至少一个传输点发送的下行信号进行测量后确定的;
所述网络侧设备根据所述推荐的DMRS port group数量和/或所述推荐的码字映射方式,确定下行传输数据的码字映射方式。
本申请实施例中,网络侧设备根据终端上报的推荐的DMRS port group数量和/或推荐的码字映射方式确定下行传输数据的码字映射方式,即网络侧设备能够根据终端上报的推荐消息确定各传输点的传输质量,根据不同的传输质量确定不同的码字映射方式,与现有技术相比,能够考虑到不同传输点的传输质量,从而减少下行数据传输的性能损失。
可选地,所述网络侧设备根据所述推荐的DMRS port group数量和/或所述推荐的码字映射方式,确定下行传输数据的码字映射方式,包括:
所述网络侧设备根据所述推荐的DMRS port group数量、所述推荐的码字映射方式以及实现配置参数,确定所述下行传输数据的码字映射方式,其中,所述实现配置参数是根据所述网络侧设备的实现方式确定的。
本申请实施例中,网络侧设备除了根据终端推荐的DMRS port group数量、推荐的码字映射方式确定码字映射方式以外,还要根据网络侧设备的实现方式的不同确定下行传输数据的码字映射方式。
可选地,所述网络侧设备根据所述推荐的DMRS port group数量、所述推荐的码字映射方式以及实现配置参数,确定所述下行传输数据的码字映射方式,包括:
所述网络侧设备根据所述推荐的DMRS port group数量、所述推荐的码字映射方式以及所述实现配置参数,确定所述下行传输数据的码字映射方式以及所述下行传输数据占用的DMRS port group的数量。
本申请实施例中,网络侧设备除了能够根据终端上报的推荐消息确定码字映射方式外,还可以根据推荐消息确定下行传输数据占用的DMRS port group的数量。
本申请还提供一种确定码字映射方式的方法,包括:
终端接收网络侧设备通过至少一个传输点发送的下行信号;
所述终端根据所述下行信号确定测量数据;
所述终端将所述测量数据上报给所述网络侧设备,以使所述网络侧设备根据所述测量数据确定下行传输数据对应的码字映射方式。
本申请实施例中,终端根据下行信号确定了测量数据,将测量数据上报给网络侧设备,网络侧设备根据测量数据来确定码字映射方式,并可以通过网络侧设备确定的码字映射方式进行数据解调,与现有技术相比,能够考虑到不同传输点的传输质量,从而减少下行数据传输的性能损失。
可选地,所述测量数据包括以下信息中的至少一项:
所述终端推荐的DMRS port group数量、所述终端推荐的码字映射方式、各传输点支持的传输层数。
本申请实施例中,终端上报的测量数据可以是终端测量的各传输点支持的传输层数,也可以是终端确定的DMRS port group数量以及码字映射方式,终端将上述至少一项信息上报给网络侧设备,以使网络侧设备根据上述信息确定码字映射方式。
可选地,所述测量数据为各传输点支持的传输层数,所述终端将所述测量数据上报给所述网络侧设备,包括:所述终端将所述各传输点支持的传输层数加入到信道状态信息CSI中,并将所述CSI上报给所述网络侧设备。
本申请实施例中,终端将测量数据加入到CSI信息中,然后将CSI信息上报给网络侧设备。
可选地,终端接收网络侧设备通过至少一个传输点发送的下行信号前,还包括:
所述终端确定下行共享信道PDSCH的传输层数大于1。
本申请实施例中,若确定下行共享信道PDSCH的传输层等于1,则只能进行一个码字的传输,使用现有技术中的规范对应的对等映射方式来进行传输。
本申请实施例还提供一种确定码字映射方式的装置,包括:
DMRS port group数量确定单元,用于确定发送至终端的下行传输数据占用的解调参考信号端口组DMRS port group的数量N,N大于或等于1;
码字映射方式确定单元,用于若确定所述下行传输数据对应的码字传输方式为双码字传输,则所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量N确定所述下行传输数据对应的码字映射方式。
本申请实施例中,根据下行数据占用的DMRS port group的数量来确定码字映射方式,通过一个数据信道实际占用的DMRS port group的数量来确定使用的码字映射方式,与现有技术中使用规范来确定码字映射方式相比,能够考虑到不同传输点的传输质量,从而减少下行数据传输的性能损失。
可选地,所述DMRS port group数量确定单元,具体用于:
根据以下信息中的至少一项,确定所述下行传输数据占用的DMRS port group的数量;
所述信息包括:所述终端推荐的DMRS port group数量、所述终端推荐的码字映射方式、各传输点支持的传输层数。
可选地,所述DMRS port group数量确定单元,还用于:
接收所述终端向所述至少一个传输点发送的上行信号;
对所述上行信号进行测量,确定所述各传输点支持的传输层数。
可选地,所述DMRS port group数量确定单元,还用于:
接收所述终端上报的信道状态信息CSI,所述CSI中包括各传输点支持的 传输层数;所述各传输点支持的传输层数是所述终端对网络侧设备向所述至少一个传输点发送的下行信号进行测量得到的。
可选地,所述DMRS port group数量确定单元,还用于:
接收所述终端上报的推荐消息,所述推荐消息中包括推荐的DMRS port group数量,和/或,推荐的码字映射方式;所述推荐的DMRS port group数量,和/或,所述推荐的码字映射方式是所述终端根据网络侧设备通过所述至少一个传输点发送的下行信号进行测量后确定的。
可选地,所述DMRS port group数量确定单元,具体用于:
若确定每个传输点支持的传输层数都大于或等于1,则确定所述下行传输数据占用的DMRS port group的数量大于或等于2;
若确定只有一个传输点的支持的传输层数大于或等于1,则确定所述下行传输数据占用的DMRS port group的数量为1。
可选地,所述DMRS port group数量确定单元,还用于:
确定下行共享信道PDSCH的传输层数大于1。
可选地,所述下行传输数据对应的码字映射方式,包括:
映射方式I以及映射方式II;
所述映射方式I中,若所述PDSCH的传输层数为偶数,则每个码字对应的传输层数相等;若所述PDSCH的传输层数为偶数为奇数时,码字0的传输层数比码字1的传输层数少一层;
所述映射方式II中,N0+N1=PDSCH的传输层数,其中,N0大于或等于1,N1大于或等于1,N0为码字0的传输层数,N1为码字1的传输层数。
可选地,所述码字映射方式确定单元,具体用于:
若确定所述下行传输数据占用的DMRS port group的数量大于或等于2,则确定所述下行传输数据对应的码字传输方式为映射方式II。
可选地,所述码字映射方式确定单元,具体用于:
若确定所述下行传输数据占用的DMRS port group的数量大于或等于2,则确定两个DMRS port group对应的传输层数是否满足预设规则,所述预设规则是所述网络侧设备根据所述PDSCH的传输层数确定的;
若确定两个DMRS port group对应的传输层数满足所述预设规则,则确定所述下行传输数据对应的码字映射方式为映射方式II。
可选地,所述预设规则为每个DMRS port group对应的传输层的总和满足预设集合,其中所述预设集合中的元素取值范围为[1,...,RI_MAX],所述RI_MAX为所述PDSCH的最大传输层数;或
所述预设规则为两个DMRS port group对应的传输层数之差大于或等于2。
可选地,所述码字映射方式确定单元,具体用于:
若确定所述下行传输数据占用的DMRS port group的数量等于1,则根据所述PDSCH的传输层数确定所述下行传输数据对应的码字映射方式为映射方式I。
可选地,所述码字映射方式确定单元,还用于:
将所述码字映射方式通过信令方式或者隐含方式传递给所述终端,以使所述终端按照所述码字映射方式解调数据。
可选地,所述DMRS port group中各DMRS端口具有QCL关系。
本申请实施例还提供一种电子设备,包括:
至少一个处理器;以及,与所述至少一个处理器通信连接的存储器;其中,所述存储器存储有可被所述至少一个处理器执行的指令,所述指令被所述至少一个处理器执行,以使所述至少一个处理器能够执行上述实施例中任一所述的方法。
本申请实施例还提供一种非暂态计算机可读存储介质,所述非暂态计算 机可读存储介质存储计算机指令,所述计算机指令用于使所述计算机执行上述实施例中任一所述方法。
本申请实施例还提供一种确定码字映射方式的装置,包括:
接收单元,用于接收终端上报的推荐消息,所述推荐消息中包括推荐的DMRS port group数量和/或推荐的码字映射方式;所述推荐的DMRS port group数量和/或所述推荐的码字映射方式是所述终端根据网络侧设备通过至少一个传输点发送的下行信号进行测量后确定的;
码字映射方式确定单元,用于根据所述推荐的DMRS port group数量和/或所述推荐的码字映射方式,确定下行传输数据的码字映射方式。
本申请实施例中,根据终端上报的推荐的DMRS port group数量和/或推荐的码字映射方式确定下行传输数据的码字映射方式,即根据终端上报的推荐消息确定各传输点的传输质量,根据不同的传输质量确定不同的码字映射方式,与现有技术相比,能够减少下行数据传输的性能损失。
可选地,所述码字映射方式确定单元,具体用于:
根据所述推荐的DMRS port group数量、所述推荐的码字映射方式以及实现配置参数,确定所述下行传输数据的码字映射方式,其中,所述实现配置参数是根据所述网络侧设备的实现方式确定的。
可选地,所述码字映射方式确定单元,具体用于:
根据所述推荐的DMRS port group数量、所述推荐的码字映射方式以及所述实现配置参数,确定所述下行传输数据的码字映射方式以及所述下行传输数据占用的DMRS port group的数量。
本申请实施例还提供一种电子设备,包括:
至少一个处理器;以及,与所述至少一个处理器通信连接的存储器;其中,所述存储器存储有可被所述至少一个处理器执行的指令,所述指令被所述至少一个处理器执行,以使所述至少一个处理器能够执行上述实施例中任 一所述的方法。
本申请实施例还提供一种非暂态计算机可读存储介质,所述非暂态计算机可读存储介质存储计算机指令,所述计算机指令用于使所述计算机执行上述实施例中任一所述方法。
本申请实施例还提供一种确定码字映射方式的方法,包括:
下行信号接收单元,用于接收网络侧设备通过至少一个传输点发送的下行信号;
测量数据确定单元,用于根据所述下行信号确定测量数据;
上报单元,用于将所述测量数据上报给所述网络侧设备,以使所述网络侧设备根据所述测量数据确定下行传输数据对应的码字映射方式。
本申请实施例中,根据下行信号确定了测量数据,将测量数据上报给网络侧设备,网络侧设备根据测量数据来确定码字映射方式,并可以通过网络侧设备确定的码字映射方式进行数据解调,与现有技术相比,能够考虑到不同传输点的传输质量,从而减少下行数据传输的性能损失。
可选地,所述测量数据包括以下信息中的至少一项:
终端推荐的DMRS port group数量、所述终端推荐的码字映射方式、各传输点支持的传输层数。
可选地,所述测量数据为各传输点支持的传输层数,所述上报单元具体用于:
将所述各传输点支持的传输层数加入到信道状态信息CSI中,并将所述CSI上报给所述网络侧设备。
可选地,所述测量数据确定单元还用于:
确定下行共享信道PDSCH的传输层数大于1。
本申请实施例还提供一种电子设备,包括:
至少一个处理器;以及,与所述至少一个处理器通信连接的存储器;其中,所述存储器存储有可被所述至少一个处理器执行的指令,所述指令被所述至少一个处理器执行,以使所述至少一个处理器能够执行上述实施例中任一所述的方法。
本申请实施例还提供一种非暂态计算机可读存储介质,所述非暂态计算机可读存储介质存储计算机指令,所述计算机指令用于使所述计算机执行上述实施例中任一所述方法。
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简要介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域的普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的一种通信架构的结构示意图;
图2为本申请实施例提供的一种确定码字映射方式方法流程示意图;
图3为本申请实施例提供的映射方式I的示意图;
图4为本申请实施例提供的映射方式II的示意图;
图5为本申请实施例提供的一种确定码字映射方式方法的流程示意图;
图6为本申请实施例提供的一种确定码字映射方式方法的流程示意图;
图7为本申请实施例提供的一种确定码字映射方式方法的流程示意图;
图8为本申请实施例提供的一种确定码字映射方式方法的流程示意图;
图9为本申请实施例提供的一种确定码字映射方式方法的流程示意图;
图10为本申请实施例提供的一种确定码字映射方式装置的结构示意图;
图11为本申请实施例提供的一种确定码字映射方式装置的结构示意图;
图12为本申请实施例提供的一种确定码字映射方式装置的结构示意图;
图13为本申请实施例提供的一种电子设备的结构示意图;
图14为本申请实施例提供的一种电子设备的结构示意图;
图15为本申请实施例提供的一种电子设备的结构示意图。
为了使本申请的目的、技术方案和优点更加清楚,下面将结合附图对本申请作可选地详细描述,显然,所描述的实施例仅仅是本申请一部份实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本申请保护的范围。
参见图1,图1是本申请实施例应用的网络结构示意图;如图1所示,包括网络侧设备101和终端102。其中,网络侧设备101可以是演进型基站(eNB,evolved Node B)或者其他基站,需要说明的是,在本申请实施例中并不限定网络侧设备101的具体类型。网络侧设备101可以与终端102建立通信,终端102可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(LaptopComputer)、个人数字助理(personal digital assistant,简称PDA)、移动上网装置(Mobile Internet Device,MID)或可穿戴式设备(Wearable Device)等终端设备,需要说明的是,在本申请实施例中并不限定终端102的具体类型。
基于图1中的结构,本申请实施例提供一种确定码字映射方式的方法,如图2所示,包括:
步骤201,网络侧设备确定发送至终端的下行传输数据占用的解调参考信号端口组DMRS port group的数量N,N大于或等于1;
步骤202,若所述网络侧设备确定所述下行传输数据对应的码字传输方式为双码字传输,则所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量N确定所述下行传输数据对应的码字映射方式。
在本申请实施例中,网络侧设备通过至少一个传输点与终端进行数据传输,可选的,在本申请实施例中,各传输点可以为各协作的TRP(Transmission/Receiption Point)或者可以为各协作的天线阵面(panel)。
在本申请实施例中,多个TRP/panel进行协作传输的情况下,不同 TRP/panel发送的信号可能具有相对独立的大尺度特征,例如平均时延、时延扩展、平均多普勒偏移、多普勒扩展以及空域接收参数等。因此在NR系统中,将两个或多个参考信号信道大尺度参数一致的情况称为准共址QCL。反之,则称为非QCL。
可选的,在本申请实施例中,所述DMRS port group中各DMRS端口具有QCL关系,即在一个组中的各DMRS端口QCL。
可选的,在本申请实施例中,相同CDM组中的DMRS端口也具有QCL关系。
可选的,在本申请实施例中,每个数据信道最多支持两个DMRS port group。
可选的,在本申请实施例中,一个DMRS port group可以通过一个传输点传输,也可以通过两个传输点传输,两个传输点对应的DMRS端口也具有QCL关系。
在本申请实施例中,由于单码字传输时不存在两个码字对应的层数的信道质量相差很多的问题,可以使用现有技术中的方法来确定码字映射方式。所以在本申请实施例中,首先确定下行传输数据对应的码字传输方式为双码字传输。
可选的,在本申请实施例中,可以所述下行传输数据占用的DMRS port group的数量确定所述下行传输数据对应的码字传输方式。
例如,方式一:网络侧设备若确定所述下行传输数据占用的DMRS port group的数量大于或等于2,则确定所述下行传输数据对应的码字传输方式为双码字传输;
方式二,所述网络侧设备若确定所述下行传输数据占用的DMRS port group的数量大于或等于2,则确定各传输点支持的传输层数是否满足预设规则,所述预设规则是所述网络侧设备根据所述PDSCH的传输层数确定的;
所述网络侧设备若确定各传输点支持的传输层数满足所述预设规则,则确定所述下行传输数据对应的码字传输方式为双码字传输。
方式三:所述网络侧设备若确定所述下行传输数据占用的DMRS port group的数量等于1,根据所述PDSCH的传输层数确定所述下行传输数据对应的码字传输方式。
当然,确定码字传输方式的方法还有很多,在此不做赘述。
在本申请实施例中,网络侧设备根据下行传输数据占用的DMRS port group的数量确定了码字映射方式,可选的,在本申请实施例中,码字映射方式有两种,一种是现有技术中通常使用的尽可能对等的映射方式以及根据不同信道质量确定的映射方式。
例如如图3所示的对等映射方式,该映射方式中每个码字的层数尽可能对等。层数为偶数时,每个码字的层数相同。层数为奇数时,码字0的层数比码字1少一个。
如图4所示为根据不同信道质量确定的映射方式,即图4中的码字0对应的层数为3,码字1对应的层数为2。
可选的,在本申请实施例中,将近乎对等的映射方式,以下记为映射方式I。将根据信道质量确定的映射方式记为映射方式II。
在本申请实施例中,在下行传输过程中,网络侧设备为每个被调度终端分配一定数量的并行数据流,其中的每个数据流称为一层。在确定了码字映射方式后,将需要传输的每个码字映射到至少一个数据层中,通过至少一个数据层进行传输。
可选的,在本申请实施例中,一个下行数据传输信道最多支持8层数据传输。
可选的,在本申请实施例中,在确定下行传输数据对应的码字映射方式前,还需要确定下行数据传输信道能够支持的传输层数;可选的,在本申请实施例中,下行数据传输信道为下行共享信道PDSCH。
在本申请实施例中,网络侧设备和终端设备都可以确定PDSCH支持的传输层数,可选的,网络侧设备和终端设备根据PDSCH的信道质量来确定PDSCH支持的传输层数。
若网络侧设备或者终端设备确定的PDSCH支持的传输层数为1,即只能讲码字通过1个传输层传输,则使用现有技术规范规定的对等码字映射方式进行码字映射。
若网络侧设备或者终端设备确定的PDSCH支持的传输层数大于1时,网络侧设备再确定DMRS port group的数量,并根据该数量确定码字映射方式。
可选的,在本申请实施例中,当确定PDSCH支持的传输层数大于1时,映射方式I可以描述为:若PDSCH的传输层数为偶数,则每个码字对应的传输层数相等;若PDSCH的传输层数为偶数为奇数时,码字0的传输层数比码字1的传输层数少一层。
而映射方式II可以描述为:N0+N1=PDSCH的传输层数,其中,N0大于或等于1,N1大于或等于1,N0为码字0的传输层数,N1为码字1的传输层数。
可选的,在本申请实施例中,网络侧设备可以根据以下至少一项信息来确定下行传输数据占用的DMRS port group的数量:
所述终端推荐的DMRS port group数量;
所述终端推荐的码字映射方式;
各传输点支持的传输层数。
可选的,在本申请实施例中,终端推荐的DMRS port group数量是终端根据网络侧设备通过所述至少一个传输点发送的下行信号进行测量后确定的;终端推荐的码字映射方式是终端根据网络侧设备通过所述至少一个传输点发送的下行信号进行测量后确定的;各传输点支持的传输层数,既可以是终端确定的,也可以是网络侧设备确定。
可选的,在本申请实施例中,终端可以根据通过网络侧设备通过所述至少一个传输点发送的下行信号进行测量的测量数据确定各传输点支持的传输层数,并将该传输层数上报。
可选的,在本申请实施例中,终端将测量确定的各传输点支持的传输层 数加入到信道状态信息CSI中,并将CSI上报给网络侧。
网络侧在接收到终端的CSI后,确定各传输点支持的传输层数。
可选的,在本申请实施例中,网络侧设备接收所述终端通过至少一个传输点发送的上行信号,并根据上行信号的测量数据,确定各传输点支持的传输层数。
可选的,在本申请实施例中,网络侧设备确定的各传输点支持的传输层数与终端确定各传输点支持的传输层数可能不同。
可选的,在本申请实施例中,网络侧设备根据至少一个信息确定下行传输数据占用的DMRS port group的数量的方案有:
A、网络侧设备根据终端推荐的DMRS port group数量确定下行传输数据占用的DMRS port group的数量;
B、网络侧设备根据终端推荐的码字映射方式数量确定下行传输数据占用的DMRS port group的数量;
C、网络侧设备根据确定的各传输点支持的传输层数数量确定下行传输数据占用的DMRS port group的数量;
D、网络侧设备根据上述三个信息任两个信息的组合确定下行传输数据占用的DMRS port group的数量;
E、网络侧设备根据上述三个信息的组合确定下行传输数据占用的DMRS port group的数量。
可选的,在本申请实施例中,网络侧设备除了根据上述三种信息中的至少一种信息确定下行传输数据占用的DMRS port group的数量外,还需要根据其他信息确定下行传输数据占用的DMRS port group的数量。
可选的,在本申请实施例中,其他信息可以是网络侧的实现方式对应的参考信息,例如网络侧的实现方式是可靠性方式,则其他信息则是可靠性方式对应的参考信息。
在本申请实施例中,当网络侧设备确定了上述信息后,网络侧设备可以根据上述信息中的至少一项,确定下行传输数据占用的DMRS port group的数 量。
可选的,若网络侧根据上述信息确定每个传输点支持的传输层数都大于或等于1,则确定下行传输数据占用的DMRS port group的数量大于或等于2;网络侧设备若确定只有一个传输点的支持的传输层数大于或等于1,则确定下行传输数据占用的DMRS port group的数量为1。
可选的,在本申请实施例中,每个PDSCH数据信道至少支持两个DMRS port group的传输。
可选的,在本申请实施例中,当网络侧确定DMRS port group的数量为1后,则按照现有技术中规范规定的对等码字映射方式进行映射。也就是说,当确定DMRS port group的数量为1时,双码字通过一个DMRS port group进行传输,不会存在不同的DMRS port group对应的信道质量不均衡现象,所以使用现有技术的规定确定码字映射方式为映射方式I。
可选的,在本申请实施例中,当网络侧设备确定所述下行传输数据占用的DMRS port group的数量大于或等于2时,则确定两个码字可以通过至少两个DMRS port group进行传输,可能会存在不同的DMRS port group对应的信道质量不均衡现象,下面以DMRS port group的数量为2进行举例,可以有两种确定码字映射方式的方法。分别是:
第一种,网络侧设备直接确定映射方式为映射方式II;
第二种,网络侧设备确定两个DMRS port group对应的传输层数是否满足预设规则,所述预设规则是所述网络侧设备根据所述PDSCH的传输层数确定的;若确定两个DMRS port group对应的传输层数满足所述预设规则,则确定所述下行传输数据对应的码字映射方式为映射方式II;否则确定下行传输数据对应的码字映射方式为对映射方式I。
可选的,在本申请实施例中,所述预设规则为每个DMRS port group对应的传输层的总和满足预设集合,其中所述预设集合中的元素取值范围为 [1,...,RI_MAX],所述RI_MAX为所述PDSCH的最大传输层数;或
所述预设规则为两个DMRS port group对应的传输层数之差大于或等于2。
例如,在本申请实施例中,对于预设规则,首先确定两个DMRS port group对应的传输层数的总和,以及预设集合,预设集合是根据PDSCH的传输层数确定的,为了更加清楚的理解第一个预设规则,在此举例说明,例如如图5所示,
步骤501,网络侧设备根据两个DMRS port group对应的传输层数的总和以及PDSCH的传输层数;
步骤502,所述网络设备确定两个DMRS port group对应的传输层数的总和是否属于集合X,若属于X,则执行步骤503,否则执行步骤504;
步骤503,网络侧设备确定码字映射方式为映射方式II;
步骤504,网络侧设备确定码字映射方式为映射方式I。
在上述例子中,集合X是预先定义的,集合X中的元素是取自1~RI_max的正整数,其中RI_max为PDSCH的传输层数的最大值。
可选的,在本申请实施例中,对于预设规则,确定各传输点支持的传输层数之差与2的关系,为了更加清楚的理解预设规则,在此举例说明,例如如图6所示,
步骤601,网络侧设备根据两个DMRS port group对应的传输层数确定层数差,网络侧设备确定PDSCH的传输层数;
步骤602,所述网络设备确定层数差是否大于或等于2,若属于Y,则执行步骤603,否则执行步骤604;
步骤603,网络侧设备确定码字映射方式为映射方式II;
步骤604,网络侧设备确定码字映射方式为映射方式I。
可选的,在本申请实施例中,当确定DMRS port group的数量大于或等于 3时,则也可以按照上述方式确定码字映射方式,在此不做赘述。
可选的,在本申请实施例中,当网络侧设备确定了码字映射方式后,网络侧设备将该码字映射方式通过信令方式或者银行方式传递给终端,终端在接收到该码字映射方式后,确定解调数据的方式,以便接收下行数据。
为了更好的解释本申请实施例,下面通过具体的实施场景描述本申请实施例提供的一种传输方法。
在本申请实施例中,网络侧设备通过终端发送的上行信号确定各传输点支持的传输层数,且若网络侧设备确定下行传输数据占用的DMRS port group的数量等于2,则使用预设规则来确定码字映射方式,预设规则中,X集合中最大为8,具体步骤如图7所示:
步骤701,网络侧设备根据PDSCH的状态确定PDSCH的传输层数;
步骤702,网络侧设备确定PDSCH的传输层数是否大于1,若大于1,则执行步骤704,否则执行步骤703;
步骤703,网络侧设备确定码字映射方式为映射方式I,执行步骤705;
步骤704,网络侧设备根据终端发送的上行信号确定每个传输点支持的传输层数,执行步骤706;
步骤705,网络侧设备将码字映射方式传递给终端;
步骤706,网络侧设备确定是否每个传输点支持的传输层数都大于或等于1,若是,则执行步骤708,否则执行步骤707;
步骤707,网络侧设备确定使用的DMRS port group的数量等于1,执行步骤703;
步骤708,网络侧设备确定使用的DMRS port group的数量等于2;
步骤709,网络侧设备确定两个DMRS port group对应的传输层数之和是否属于[1,…8]的集合,若是,则执行步骤711,否则执行步骤703;
步骤710,网络侧确定码字映射方式为映射方式II,执行步骤705。
基于图1的结构,本申请实施例还提供一种传输方法,如图8所示,包 括:
步骤801,网络侧设备接收终端上报的推荐消息,所述推荐消息中包括推荐的DMRS port group数量和/或推荐的码字映射方式;所述推荐的DMRS port group数量和/或所述推荐的码字映射方式是所述终端根据所述网络侧设备通过至少一个传输点发送的下行信号进行测量后确定的;
步骤802,所述网络侧设备根据所述推荐的DMRS port group数量和/或所述推荐的码字映射方式,确定下行传输数据的码字映射方式。
可选的,在本申请实施例中,网络侧设备可以根据下列三种方式确定码字映射方式。
方式一、网络侧设备根据终端推荐的DMRS port group数量确定码字映射方式;
方式二、网络侧设备根据终端推荐的码字映射方式确定码字映射方式;
方式三、网络侧设备根据终端推荐的码字映射方式以及终端推荐的DMRS port group数量确定码字映射方式。
可选的,在本申请实施例中,对于方式一,网络侧设备根据终端推荐的DMRS port group数量进一步判断单码字映射还是双码字映射,例如:
网络侧设备若确定终端推荐的DMRS port group数量等于1,则确定码字映射方式为单码字映射;当网络侧设备若确定终端推荐的DMRS port group数量等于2时,第一种确定方法为网络侧设备直接确定使用双码字映射方式;
第二种确定方法为网络侧设备确定各传输点支持的传输层数是否满足预设规则,所述预设规则是网络侧设备根据PDSCH的状态确定的;网络侧设备若确定各传输点支持的传输层数满足预设规则,则确定下行传输数据对应的码字映射方式为双码字映射;否则确定下行传输数据对应的码字映射方式为双码字映射。
同理,方式二以及方式三中,若网络侧设备根据终端推荐的码字映射方 式确定DMRS port group数量或者网络侧设备根据终端推荐的码字映射方式以及终端推荐的DMRS port group数量确定DMRS port group数量,并根据DMRS port group数量确定码字映射方式时,可以使用上述判断方法。
也就是说,在本申请实施例中,网络侧设备根据推荐消息不仅仅能够确定码字映射方式,也可以确定DMRS port group的数量。例如,网络侧设备通过推荐消息确定出的以一个码字/两个DMRS port group进行下行数据传输,或两个码字/两个DMRS port group进行下行数据传输,或两个码字/一个DMRS port group进行下行数据传输,或一个码字/一个DMRS port group进行下行数据传输。
本申请实施例中,网络侧设备根据接收终端上报的推荐消息的至少一个消息来直接确定码字映射方式,可选的,在步骤802中,网络侧设备根据所述推荐的DMRS port group数量、所述推荐的码字映射方式以及实现配置参数,确定所述下行传输数据的码字映射方式,其中,所述实现配置参数是根据所述网络侧设备的实现方式确定的。
可选的,在本申请实施例中,实现配置参数为网络侧的实现方式对应的参考信息,例如,网络侧的实现方式为可靠性传输,则实现配置参数为可靠性传输对应的参考信息。
基于图1中的结构,本申请实施例提供一种传输方法,如图9所示,包括:
步骤901,终端接收网络侧设备通过至少一个传输点发送的下行信号;
步骤902,所述终端根据所述下行信号确定测量数据;
步骤903,所述终端将所述测量数据上报给所述网络侧设备,以使所述网络侧设备根据所述测量数据确定下行传输数据对应的码字映射方式。
可选的,在本申请实施例中,可选的,在本申请实施例中,若终端确定的PDSCH支持的传输层数为1,即PDSCH信道质量较差,且由于单码字映 射时,相应的反馈与控制开销及复杂度较低,则可以确定采用单码字映射方式。
可选的,在步骤901中,终端通过下行数据传输通道接收网络侧设备发送的下行信号。
可选的,在步骤902中,测量数据包括以下信息中的至少一项:
终端推荐的DMRS port group数量、终端推荐的码字映射方式、各传输点支持的传输层数。
可选的,在步骤903中,当终端确定了测量数据后,将测量数据加入到信道状态信息CSI中,通过CSI进行上报。
基于同样的构思,本申请实施例还提供一种传输装置,如图10所示,包括:
DMRS port group数量确定单元1001,用于确定发送至终端的下行传输数据占用的解调参考信号端口组DMRS port group的数量N,N大于或等于1;
码字映射方式确定单元1002,用于确定所述下行传输数据对应的码字传输方式为双码字传输,则所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量N确定所述下行传输数据对应的码字映射方式。
可选地,所述DMRS port group数量确定单元1001,具体用于:
根据以下信息中的至少一项,确定所述下行传输数据占用的DMRS port group的数量;
所述信息包括:所述终端推荐的DMRS port group数量、所述终端推荐的码字映射方式、各传输点支持的传输层数。
可选地,所述DMRS port group数量确定单元1001,还用于:
接收所述终端向所述至少一个传输点发送的上行信号;
对所述上行信号进行测量,确定所述各传输点支持的传输层数。
可选地,所述DMRS port group数量确定单元1001,还用于:
接收所述终端上报的信道状态信息CSI,所述CSI中包括各传输点支持的传输层数;所述各传输点支持的传输层数是所述终端对网络侧设备向所述至少一个传输点发送的下行信号进行测量得到的。
可选地,所述DMRS port group数量确定单元1001,还用于:
接收所述终端上报的推荐消息,所述推荐消息中包括推荐的DMRS port group数量,和/或,推荐的码字映射方式;所述推荐的DMRS port group数量,和/或,所述推荐的码字映射方式是所述终端根据网络侧设备通过所述至少一个传输点发送的下行信号进行测量后确定的。
可选地,所述DMRS port group数量确定单元1001,具体用于:
若确定每个传输点支持的传输层数都大于或等于1,则确定所述下行传输数据占用的DMRS port group的数量大于或等于2;
若确定只有一个传输点的支持的传输层数大于或等于1,则确定所述下行传输数据占用的DMRS port group的数量为1。
可选地,所述DMRS port group数量确定单元1001,还用于:
确定下行共享信道PDSCH的传输层数大于1。
可选地,所述下行传输数据对应的码字映射方式,包括:
映射方式I以及映射方式II;
所述映射方式I中,若所述PDSCH的传输层数为偶数,则每个码字对应的传输层数相等;若所述PDSCH的传输层数为偶数为奇数时,码字0的传输层数比码字1的传输层数少一层;
所述映射方式II中,N0+N1=PDSCH的传输层数,其中,N0大于或等于1,N1大于或等于1,N0为码字0的传输层数,N1为码字1的传输层数。
可选地,所述码字映射方式确定单元1002,具体用于:
若确定所述下行传输数据占用的DMRS port group的数量大于或等于2,则确定所述下行传输数据对应的码字传输方式为映射方式II。
可选地,所述码字映射方式确定单元1002,具体用于:
若确定所述下行传输数据占用的DMRS port group的数量大于或等于2,则确定两个DMRS port group对应的传输层数是否满足预设规则,所述预设规则是所述网络侧设备根据所述PDSCH的传输层数确定的;
若确定两个DMRS port group对应的传输层数满足所述预设规则,则确定所述下行传输数据对应的码字映射方式为映射方式II。
可选地,所述预设规则为每个DMRS port group对应的传输层的总和满足预设集合,其中所述预设集合中的元素取值范围为[1,...,RI_MAX],所述RI_MAX为所述PDSCH的最大传输层数;或
所述预设规则为两个DMRS port group对应的传输层数之差大于或等于2。
可选地,所述码字映射方式确定单元1002,具体用于:
若确定所述下行传输数据占用的DMRS port group的数量等于1,则根据所述PDSCH的传输层数确定所述下行传输数据对应的码字映射方式为映射方式I。
可选地,所述码字映射方式确定单元1002,具体用于:
将所述码字映射方式通过信令方式或者隐含方式传递给所述终端,以使所述终端按照所述码字映射方式解调数据。
可选地,所述DMRS port group中各DMRS端口具有QCL关系。
基于同样的构思,本申请实施例还提供一种传输装置,如图11所示,包括:
接收单元1101,用于接收终端上报的推荐消息,所述推荐消息中包括推荐的DMRS port group数量和/或推荐的码字映射方式;所述推荐的DMRS port group数量和/或所述推荐的码字映射方式是所述终端根据网络侧设备通过至少一个传输点发送的下行信号进行测量后确定的;
码字映射方式确定单元1102,用于根据所述推荐的DMRS port group数量和/或所述推荐的码字映射方式,确定下行传输数据的码字映射方式。
可选地,所述码字映射方式确定单元1102,具体用于:
根据所述推荐的DMRS port group数量、所述推荐的码字映射方式以及实现配置参数,确定所述下行传输数据的码字映射方式,其中,所述实现配置参数是根据所述网络侧设备的实现方式确定的。
可选地,所述码字映射方式确定单元1102,具体用于:
根据所述推荐的DMRS port group数量、所述推荐的码字映射方式以及所述实现配置参数,确定所述下行传输数据的码字映射方式以及所述下行传输数据占用的DMRS port group的数量。
基于同样的构思,本申请实施例还提供一种传输装置,如图12所示,包括:
下行信号接收单元1201,用于接收网络侧设备通过至少一个传输点发送的下行信号;
测量数据确定单元1202,用于根据所述下行信号确定测量数据;
上报单元1203,用于将所述测量数据上报给所述网络侧设备,以使所述网络侧设备根据所述测量数据确定下行传输数据对应的码字映射方式。
可选地,所述测量数据包括以下信息中的至少一项:
终端推荐的DMRS port group数量、所述终端推荐的码字映射方式、各传输点支持的传输层数。
可选地,所述测量数据为各传输点支持的传输层数,所述上报单元1203具体用于:
将所述各传输点支持的传输层数加入到信道状态信息CSI中,并将所述CSI上报给所述网络侧设备。
可选地,所述测量数据确定单元1202还用于:
确定下行共享信道PDSCH的传输层数大于1。
基于相同的原理,本申请还提供一种电子设备,如图13所示,包括:
包括处理器1301、存储器1302、收发机1303、总线接口1304,其中处理器1301、存储器1302与收发机1303之间通过总线接口1304连接;
所述处理器1301,用于读取所述存储器1302中的程序,执行下列方法:
确定发送至终端的下行传输数据占用的解调参考信号端口组DMRS port group的数量N,N大于或等于1;
若确定所述下行传输数据对应的码字传输方式为双码字传输,则根据所述下行传输数据占用的DMRS port group的数量N确定所述下行传输数据对应的码字映射方式。
可选地,所述处理器1301根据以下信息中的至少一项,确定所述下行传输数据占用的DMRS port group的数量;
所述信息包括:所述终端推荐的DMRS port group数量、所述终端推荐的码字映射方式、各传输点支持的传输层数。
可选地,所述处理器1301还用于:
通过所述收发机1303接收所述终端向所述至少一个传输点发送的上行信号;
对所述上行信号进行测量,确定所述各传输点支持的传输层数。
可选地,所述处理器1301还用于:
通过所述收发机1303接收所述终端上报的信道状态信息CSI,所述CSI中包括各传输点支持的传输层数;所述各传输点支持的传输层数是所述终端对所述网络侧设备向所述至少一个传输点发送的下行信号进行测量得到的。
可选地,所述处理器1301还用于:
通过所述收发机1303接收所述终端上报的推荐消息,所述推荐消息中包括推荐的DMRS port group数量,和/或,推荐的码字映射方式;所述推荐的DMRS port group数量,和/或,所述推荐的码字映射方式是所述终端根据所述网络侧设备通过所述至少一个传输点发送的下行信号进行测量后确定的。
可选地,所述处理器1301具体用于:
若确定每个传输点支持的传输层数都大于或等于1,则确定所述下行传输数据占用的DMRS port group的数量大于或等于2;
若确定只有一个传输点的支持的传输层数大于或等于1,则确定所述下行传输数据占用的DMRS port group的数量为1。
可选地,所述处理器1301还用于:
确定下行共享信道PDSCH的传输层数大于1。
可选地,所述下行传输数据对应的码字映射方式,包括:
映射方式I以及映射方式II;
所述映射方式I中,若所述PDSCH的传输层数为偶数,则每个码字对应的传输层数相等;若所述PDSCH的传输层数为偶数为奇数时,码字0的传输层数比码字1的传输层数少一层;
所述映射方式II中,N0+N1=PDSCH的传输层数,其中,N0大于或等于1,N1大于或等于1,N0为码字0的传输层数,N1为码字1的传输层数。
可选地,所述处理器1301具体用于:
若确定所述下行传输数据占用的DMRS port group的数量大于或等于2,则确定所述下行传输数据对应的码字传输方式为映射方式II。
可选地,所述处理器1301具体用于:
若确定所述下行传输数据占用的DMRS port group的数量大于或等于2,则两个DMRS port group对应的传输层数是否满足预设规则,所述预设规则是 所述网络侧设备根据所述PDSCH的传输层数确定的;
所述网络侧设备若确定两个DMRS port group对应的传输层数满足所述预设规则,则确定所述下行传输数据对应的码字映射方式为映射方式II。
可选地,所述预设规则为每个DMRS port group对应的传输层的总和满足预设集合,其中所述预设集合中的元素取值范围为[1,...,RI_MAX],所述RI_MAX为所述PDSCH的最大传输层数;或
所述预设规则为两个DMRS port group对应的传输层数之差大于或等于2。
可选地,所述处理器1301具体用于:
若确定所述下行传输数据占用的DMRS port group的数量等于1,则根据所述PDSCH的传输层数确定所述下行传输数据对应的码字映射方式为映射方式I。
可选地,所述处理器1301还用于:
通过所述收发机1303将所述码字映射方式通过信令方式或者隐含方式传递给所述终端,以使所述终端按照所述码字映射方式解调数据。
本申请实施例提供了一种计算机程序产品,所述计算机程序产品包括存储在非暂态计算机可读存储介质上的计算程序,所述计算机程序包括程序指令,当所述程序指令被计算机执行时,使所述计算机执行上述任意一项确定码字映射方式的方法。
基于相同的原理,本申请还提供一种电子设备,如图14所示,包括:
包括处理器1401、存储器1402、收发机1403、总线接口1404,其中处理器1401、存储器1402与收发机1403之间通过总线接口1404连接;
所述处理器1401,用于读取所述存储器1402中的程序,执行下列方法:
通过所述收发机1403接收终端上报的推荐消息,所述推荐消息中包括推荐的DMRS port group数量和/或推荐的码字映射方式;所述推荐的DMRS port group数量和/或所述推荐的码字映射方式是所述终端根据所述网络侧设备通 过至少一个传输点发送的下行信号进行测量后确定的;
根据所述推荐的DMRS port group数量和/或所述推荐的码字映射方式,确定下行传输数据的码字映射方式。
可选地,所述处理器1401具体用于:
根据所述推荐的DMRS port group数量、所述推荐的码字映射方式以及实现配置参数,确定所述下行传输数据的码字映射方式,其中,所述实现配置参数是根据所述网络侧设备的实现方式确定的。
可选地,所述处理器1401具体用于:
根据所述推荐的DMRS port group数量、所述推荐的码字映射方式以及所述实现配置参数,确定所述下行传输数据的码字映射方式以及所述下行传输数据占用的DMRS port group的数量。
本申请实施例提供了一种计算机程序产品,所述计算机程序产品包括存储在非暂态计算机可读存储介质上的计算程序,所述计算机程序包括程序指令,当所述程序指令被计算机执行时,使所述计算机执行上述任一一项确定码字映射方式的方法。
基于相同的原理,本申请还提供一种电子设备,如图15所示,包括:
包括处理器1501、存储器1502、收发机1503、总线接口1504,其中处理器1501、存储器1502与收发机1503之间通过总线接口1504连接;
所述处理器1501,用于读取所述存储器1502中的程序,执行下列方法:
通过所述收发机1503接收网络侧设备通过至少一个传输点发送的下行信号;
根据所述下行信号确定测量数据;
将所述测量数据上报给所述网络侧设备,以使所述网络侧设备根据所述测量数据确定下行传输数据对应的码字映射方式。
可选地,所述测量数据包括以下信息中的至少一项:
所述终端推荐的DMRS port group数量、所述终端推荐的码字映射方式、各传输点支持的传输层数。
可选地,所述测量数据为各传输点支持的传输层数,所述处理器1501具体用于:
将所述各传输点支持的传输层数加入到信道状态信息CSI中,并将所述CSI上报给所述网络侧设备。
可选地,所述处理器1501还用于:
确定下行共享信道PDSCH的传输层数大于1。
本申请实施例提供了一种计算机程序产品,所述计算机程序产品包括存储在非暂态计算机可读存储介质上的计算程序,所述计算机程序包括程序指令,当所述程序指令被计算机执行时,使所述计算机执行上述任一一项确定码字映射的方式的方法。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的 处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然,本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样,倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。
Claims (30)
- 一种确定码字映射方式的方法,其特征在于,所述方法包括:网络侧设备确定发送至终端的下行传输数据占用的解调参考信号端口组DMRS port group的数量N,N大于或等于1;若所述网络侧设备确定所述下行传输数据对应的码字传输方式为双码字传输,则所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量N确定所述下行传输数据对应的码字映射方式。
- 根据权利要求1所述的方法,其特征在于,所述网络侧设备确定发送至终端的下行传输数据占用的DMRS port group的数量,包括:所述网络侧设备根据以下信息中的至少一项,确定所述下行传输数据占用的DMRS port group的数量;所述信息包括:所述终端推荐的DMRS port group数量、所述终端推荐的码字映射方式、各传输点支持的传输层数。
- 根据权利要求2所述的方法,其特征在于,所述网络侧设备确定发送至终端的下行传输数据占用的DMRS port group的数量之前,还包括:所述网络侧设备接收所述终端向所述至少一个传输点发送的上行信号;所述网络侧设备对所述上行信号进行测量,确定所述各传输点支持的传输层数。
- 根据权利要求2所述的方法,其特征在于,所述网络侧设备确定发送至终端的下行传输数据占用的DMRS port group的数量之前,还包括:所述网络侧设备接收所述终端上报的信道状态信息CSI,所述CSI中包括各传输点支持的传输层数;所述各传输点支持的传输层数是所述终端对所述网络侧设备向所述至少一个传输点发送的下行信号进行测量得到的。
- 根据权利要求2所述的方法,其特征在于,所述网络侧设备确定发 送至终端的下行传输数据占用的DMRS port group的数量之前,还包括:所述网络侧设备接收所述终端上报的推荐消息,所述推荐消息中包括推荐的DMRS port group数量,和/或,推荐的码字映射方式;所述推荐的DMRS port group数量,和/或,所述推荐的码字映射方式是所述终端根据所述网络侧设备向所述至少一个传输点发送的下行信号进行测量后确定的。
- 根据权利要求2所述的方法,其特征在于,所述网络侧设备确定发送至终端的下行传输数据占用的DMRS port group的数量,包括:所述网络侧设备若确定每个传输点支持的传输层数都大于或等于1,则确定所述下行传输数据占用的DMRS port group的数量大于或等于2;所述网络侧设备若确定只有一个传输点的支持的传输层数大于或等于1,则确定所述下行传输数据占用的DMRS port group的数量为1。
- 根据权利要求2~6任一项所述的方法,其特征在于,所述网络侧设备确定发送至终端的下行传输数据占用的解调参考信号端口组DMRS port group的数量N前,还包括:所述网络侧设备确定PDSCH的传输层数大于1。
- 根据权利要求7所述的方法,其特征在于,所述下行传输数据对应的码字映射方式,包括:映射方式I以及映射方式II;所述映射方式I中,若所述PDSCH的传输层数为偶数,则每个码字对应的传输层数相等;若所述PDSCH的传输层数为偶数为奇数时,码字0的传输层数比码字1的传输层数少一层;所述映射方式II中,N0+N1=PDSCH的传输层数,其中,N0大于或等于1,N1大于或等于1,N0为码字0的传输层数,N1为码字1的传输层数。
- 根据权利要求8所述的方法,其特征在于,所述网络侧设备根据所述 下行传输数据占用的DMRS port group的数量N确定所述下行传输数据对应的码字映射方式,包括:所述网络侧设备若确定所述下行传输数据占用的DMRS port group的数量大于或等于2,则确定所述下行传输数据对应的码字映射方式为映射方式II。
- 根据权利要求8所述的方法,其特征在于,所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量确定所述下行传输数据对应的码字映射方式,包括:所述网络侧设备若确定所述下行传输数据占用的DMRS port group的数量大于或等于2,则确定两个DMRS port group对应的传输层数是否满足预设规则,所述预设规则是所述网络侧设备根据所述PDSCH的传输层数确定的;所述网络侧设备若确定两个DMRS port group对应的传输层数满足所述预设规则,则确定所述下行传输数据对应的码字映射方式为映射方式II。
- 根据权利要求10所述的方法,其特征在于,所述预设规则为每个DMRS port group对应的传输层的总和满足预设集合,其中所述预设集合中的元素取值范围为[1,...,RI_MAX],所述RI_MAX为所述PDSCH的最大传输层数;或所述预设规则为两个DMRS port group对应的传输层数之差大于或等于2。
- 根据权利要求8所述的方法,其特征在于,所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量N确定所述下行传输数据对应的码字映射方式,包括:所述网络侧设备若确定所述下行传输数据占用的DMRS port group的数量等于1,则根据所述PDSCH的传输层数确定所述下行传输数据对应的码字映射方式为映射方式I。
- 根据权利要求1所述的方法,其特征在于,所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量N确定所述下行传输数据对 应的码字映射方式后,还包括:所述网络侧设备将所述码字映射方式通过信令方式或者隐含方式传递给所述终端,以使所述终端按照所述码字映射方式解调数据。
- 根据权利要求1所述的方法,其特征在于,所述DMRS port group中各DMRS端口具有QCL关系。
- 一种确定码字映射方式的方法,其特征在于,所述方法包括:网络侧设备接收终端上报的推荐消息,所述推荐消息中包括推荐的DMRS port group数量和/或推荐的码字映射方式;所述推荐的DMRS port group数量和/或所述推荐的码字映射方式是所述终端根据所述网络侧设备通过至少一个传输点发送的下行信号进行测量后确定的;所述网络侧设备根据所述推荐的DMRS port group数量和/或所述推荐的码字映射方式,确定下行传输数据的码字映射方式。
- 根据权利要求15所述的方法,其特征在于,所述网络侧设备根据所述推荐的DMRS port group数量和/或所述推荐的码字映射方式,确定下行传输数据的码字映射方式,包括:所述网络侧设备根据所述推荐的DMRS port group数量、所述推荐的码字映射方式以及实现配置参数,确定所述下行传输数据的码字映射方式,其中,所述实现配置参数是根据所述网络侧设备的实现方式确定的。
- 根据权利要求16所述的方法,其特征在于,所述网络侧设备根据所述推荐的DMRS port group数量、所述推荐的码字映射方式以及实现配置参数,确定所述下行传输数据的码字映射方式,包括:所述网络侧设备根据所述推荐的DMRS port group数量、所述推荐的码字映射方式以及所述实现配置参数,确定所述下行传输数据的码字映射方式以及所述下行传输数据占用的DMRS port group的数量。
- 一种确定码字映射方式的方法,其特征在于,所述方法包括:终端接收网络侧设备通过至少一个传输点发送的下行信号;所述终端根据所述下行信号确定测量数据;所述终端将所述测量数据上报给所述网络侧设备,以使所述网络侧设备根据所述测量数据确定下行传输数据对应的码字映射方式。
- 根据权利要求18所述的方法,其特征在于,所述测量数据包括以下信息中的至少一项:所述终端推荐的DMRS port group数量、所述终端推荐的码字映射方式、各传输点支持的传输层数。
- 根据权利要求18所述的方法,其特征在于,所述测量数据为各传输点支持的传输层数,所述终端将所述测量数据上报给所述网络侧设备,包括:所述终端将所述各传输点支持的传输层数加入到信道状态信息CSI中,并将所述CSI上报给所述网络侧设备。
- 根据权利要求18-20任一项所述的方法,其特征在于,终端接收网络侧设备通过至少一个传输点发送的下行信号前,还包括:所述终端确定下行共享信道PDSCH的传输层数大于1。
- 一种确定码字映射方式的装置,其特征在于,包括:DMRS port group的数量确定单元,用于确定发送至终端的下行传输数据占用的解调参考信号端口组DMRS port group的数量N,N大于或等于1;码字映射方式确定单元,用于若确定所述下行传输数据对应的码字传输方式为双码字传输,则所述网络侧设备根据所述下行传输数据占用的DMRS port group的数量N确定所述下行传输数据对应的码字映射方式。
- 一种确定码字映射方式的装置,其特征在于,包括:推荐消息接收单元,用于接收终端上报的推荐消息,所述推荐消息中包 括推荐的DMRS port group数量和/或推荐的码字映射方式;所述推荐的DMRS port group数量和/或所述推荐的码字映射方式是所述终端根据所述网络侧设备通过至少一个传输点发送的下行信号进行测量后确定的;码字映射方式确定单元,用于根据所述推荐的DMRS port group数量和/或所述推荐的码字映射方式,确定下行传输数据的码字映射方式。
- 一种确定码字映射方式的装置,其特征在于,包括:下行信号接收单元,用于接收网络侧设备通过至少一个传输点发送的下行信号;测量数据确定单元,用于根据所述下行信号确定测量数据;上报单元,用于将所述测量数据上报给所述网络侧设备,以使所述网络侧设备根据所述测量数据确定下行传输数据对应的码字映射方式。
- 一种电子设备,其特征在于,包括:至少一个处理器;以及,与所述至少一个处理器通信连接的存储器;其中,所述存储器存储有可被所述至少一个处理器执行的指令,所述指令被所述至少一个处理器执行,以使所述至少一个处理器能够执行权利要求1-14任一所述的方法。
- 一种非暂态计算机可读存储介质,其特征在于,所述非暂态计算机可读存储介质存储计算机指令,所述计算机指令用于使所述计算机执行权利要求1~14任一所述方法。
- 一种电子设备,其特征在于,包括:至少一个处理器;以及,与所述至少一个处理器通信连接的存储器;其中,所述存储器存储有可被所述至少一个处理器执行的指令,所述指令被所述至少一个处理器执行,以使所述至少一个处理器能够执行权利要求15-17 任一所述的方法。
- 一种非暂态计算机可读存储介质,其特征在于,所述非暂态计算机可读存储介质存储计算机指令,所述计算机指令用于使所述计算机执行权利要求15-17任一所述方法。
- 一种电子设备,其特征在于,包括:至少一个处理器;以及,与所述至少一个处理器通信连接的存储器;其中,所述存储器存储有可被所述至少一个处理器执行的指令,所述指令被所述至少一个处理器执行,以使所述至少一个处理器能够执行权利要求18-21任一所述的方法。
- 一种非暂态计算机可读存储介质,其特征在于,所述非暂态计算机可读存储介质存储计算机指令,所述计算机指令用于使所述计算机执行权利要求18-21任一所述方法。
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