WO2020034831A1 - 数据传输方法、终端及网络设备 - Google Patents
数据传输方法、终端及网络设备 Download PDFInfo
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- 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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Definitions
- the present disclosure relates to the technical field of communication applications, and in particular, to a data transmission method, a terminal, and a network device.
- a user equipment or a terminal (User Equipment) (UE) equipped with multiple transmitting antennas in the related art can perform uplink beamforming.
- a UE in a radio resource control connected (RRC_CONNECTED) state may be semi-statically configured with multiple UE-specific uplink sounding reference signal (SRS) resources.
- SRS uplink sounding reference signal
- the SRS signals transmitted on each SRS resource are beamformed using a specific beamforming matrix.
- the UE sends these SRS resources in the uplink.
- Transmission and reception points (TRP) measure the signal quality of different SRS resources and select the optimal SRS resource.
- the TRP sends an index (SRS resource indicator (SRS) resource indicator (SRI)) of the selected SRS resource to the UE via Downlink Control Information (DCI).
- SRS resource indicator SRS resource indicator
- SRI resource indicator
- DCI Downlink Control Information
- the UE can infer from the SRI which uplink beamforming matrix (eg, SRS resources) is recommended by the TRP for future uplink transmissions.
- the UE may then use the uplink beamforming matrix indicated by the SRI for future uplink transmissions.
- the UE may have multiple antenna panels for uplink transmission.
- Each antenna panel consists of a group of antenna elements.
- the exact number of antenna panels, the number of antenna units, and the arrangement of antenna units within each panel are determined according to specific implementations, and different UEs may have different implementations.
- the UE can send one data layer from one panel at a time.
- the UE may also send a data layer from a subset of antenna panels (including more than one antenna panel) at the same time.
- the description here is also applicable to SRS resources (transmission of SRS signals).
- the specifications in the related technology cannot support a joint transmission method in which a physical uplink shared channel (PUSCH) is simultaneously transmitted from a multi-antenna panel panel, resulting in a lower transmission rate.
- PUSCH physical uplink shared channel
- An object of the present disclosure is to provide a data transmission method, a terminal, and a network device to solve a problem that specifications in related technologies cannot support simultaneous transmission of PUSCH from a multi-antenna panel.
- the present disclosure provides a data transmission method applied to a terminal configured with at least two antenna panels for uplink transmission, including:
- PUSCH scheduling information sent by a network device, where the PUSCH scheduling information includes first indication information and second indication information, the first indication information is used to indicate a data layer included in the PUSCH, and the second indication information Used to indicate a precoding matrix;
- the method Before receiving the physical uplink shared channel PUSCH scheduling information sent by the network device, the method further includes:
- each target antenna panel uses an uplink signal resource for acquiring channel state information CSI using a target transmission beam corresponding to the target antenna panel, and the PUSCH scheduling information is obtained by a network device according to the uplink signal resource.
- the uplink signal resource is an uplink signal resource including K ports, K is a sum of the number of digital channels of the at least two target antenna panels, K ports are mapped to at least two of the target antenna panels, K Is a positive integer, and K is greater than or equal to L, and L is the number of data layers included in the PUSCH.
- sending, on each target antenna panel, an uplink signal resource for acquiring channel state information CSI using a target transmission beam corresponding to the target antenna panel includes:
- the mapping the data layer included in the PUSCH to at least two target antenna panels for transmission according to the precoding matrix indicated by the second instruction information includes:
- Sending a beam training signal resource by using an analog beam on the at least two target antenna panels includes:
- a target beam training signal resource set corresponding to a third target antenna panel is selected, and each of the beam training signal resource sets includes at least one beam training signal.
- the third target antenna panel is any one of the at least two target antenna panels;
- an embodiment of the present disclosure further provides a data transmission method, which is applied to a network device and includes:
- the PUSCH scheduling information includes first indication information and second indication information
- the first indication information is used to indicate data included in the PUSCH Layer
- the second indication information is used to indicate a precoding matrix
- the method before obtaining the uplink channel state information CSI according to the uplink signal resources sent by the terminal, the method further includes:
- the uplink signal resource is an uplink signal resource including K ports, K is a sum of the number of digital channels of at least two target antenna panels of the terminal, K ports are mapped to at least two of the target antenna panels, K Is a positive integer, and K is greater than or equal to L, and L is the number of data layers included in the PUSCH.
- the method before obtaining the uplink channel state information CSI according to the uplink signal resources sent by the terminal, the method further includes:
- the correspondence between the port and the target transmission beam is indicated to the terminal.
- Indicating the correspondence between the port and the target transmission beam to the terminal includes:
- the corresponding relationship between the port group and the target transmission beam is indicated to the terminal, where the K ports are divided into D port groups, and at least one target port group exists in the D port groups, and the target port A group is a port group including at least two ports, and D is a positive integer greater than 1.
- an embodiment of the present disclosure further provides a terminal configured with at least two antenna panels for uplink transmission.
- the terminal includes: a transceiver, a memory, a processor, and a memory stored in the memory. And a program that can be run on a processor that implements the following steps when the processor executes the program:
- the PUSCH scheduling information includes first indication information and second indication information, where the first indication information is used to indicate a data layer included in the PUSCH, and the first Two indication information are used to indicate a precoding matrix;
- each target antenna panel uses an uplink signal resource for acquiring channel state information CSI using a target transmission beam corresponding to the target antenna panel, and the PUSCH scheduling information is obtained by a network device according to the uplink signal resource.
- the uplink signal resource is an uplink signal resource including K ports, K is a sum of the number of digital channels of the at least two target antenna panels, K ports are mapped to at least two of the target antenna panels, K Is a positive integer, and K is greater than or equal to L, and L is the number of data layers included in the PUSCH.
- a target beam training signal resource set corresponding to a third target antenna panel is selected, and each of the beam training signal resource sets includes at least one beam training signal.
- the third target antenna panel is any one of the at least two target antenna panels;
- an embodiment of the present disclosure further provides a computer-readable storage medium on which a computer program is stored.
- the computer program is executed by a processor, the steps of the data transmission method described above are implemented.
- an embodiment of the present disclosure further provides a network device, including a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor.
- a network device including a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor.
- the PUSCH scheduling information includes first indication information and second indication information
- the first indication information is used to indicate data included in the PUSCH Layer
- the second indication information is used to indicate a precoding matrix
- the terminal Before acquiring the uplink channel state information CSI according to the uplink signal resources sent by the terminal, obtain the beam training signal resources sent by the terminal using the analog beam on at least two target antenna panels;
- the uplink signal resource is an uplink signal resource including K ports, K is a sum of the number of digital channels of at least two target antenna panels of the terminal, K ports are mapped to at least two of the target antenna panels, K Is a positive integer, and K is greater than or equal to L, and L is the number of data layers included in the PUSCH.
- the terminal Before acquiring the uplink channel state information CSI according to the uplink signal resource sent by the terminal, indicate the correspondence between the port and the target transmission beam to the terminal.
- the corresponding relationship between the port group and the target transmission beam is indicated to the terminal, where the K ports are divided into D port groups, and at least one target port group exists in the D port groups, and the target port A group is a port group including at least two ports, and D is a positive integer greater than 1.
- an embodiment of the present disclosure further provides a computer-readable storage medium on which a computer program is stored.
- the computer program is executed by a processor, the steps of the data transmission method described above are implemented.
- an embodiment of the present disclosure further provides a terminal configured with at least two antenna panels for uplink transmission, including:
- a receiving module configured to receive physical uplink shared channel PUSCH scheduling information sent by a network device, where the PUSCH scheduling information includes first indication information and second indication information, and the first indication information is used to indicate a data layer included in the PUSCH;
- the second indication information is used to indicate a precoding matrix;
- a first sending module configured to map the data layer included in the PUSCH to at least two target antenna panels for transmission according to a precoding matrix indicated by the second instruction information, where the target antenna panel is at least two of the terminal An antenna panel for transmitting PUSCH among two antenna panels.
- a second sending module configured to send a beam training signal resource using an analog beam on the at least two target antenna panels
- a first acquisition module configured to acquire a target transmission beam corresponding to each of the target antenna panels indicated by a network device, where the target transmission beam is obtained by a network device according to the beam training signal resource;
- a third sending module configured to send, on each target antenna panel, an uplink signal resource used to obtain channel state information CSI using a target transmission beam corresponding to the target antenna panel, and the PUSCH scheduling information is a network device according to the uplink Signal resources are obtained.
- the uplink signal resource is an uplink signal resource including K ports, K is a sum of the number of digital channels of the at least two target antenna panels, K ports are mapped to at least two of the target antenna panels, K Is a positive integer, and K is greater than or equal to L, and L is the number of data layers included in the PUSCH.
- an embodiment of the present disclosure further provides a network device, including:
- a second acquisition module configured to acquire uplink channel state information CSI according to an uplink signal resource sent by the terminal
- a fourth sending module configured to obtain physical uplink shared channel PUSCH scheduling information according to the channel state information CSI and send the PUSCH scheduling information to the terminal, where the PUSCH scheduling information includes first indication information and second indication information, and the first indication information It is used to indicate a data layer included in the PUSCH, and the second indication information is used to indicate a precoding matrix.
- a third acquisition module configured to acquire a beam training signal resource sent by the terminal using at least two target antenna panels using an analog beam
- a determining module is configured to perform beam scanning processing on the beam training signal resource, determine a target transmission beam corresponding to each of the target antenna panels, and instruct the terminal.
- the uplink signal resource is an uplink signal resource including K ports, K is a sum of the number of digital channels of at least two target antenna panels of the terminal, K ports are mapped to at least two of the target antenna panels, K Is a positive integer, and K is greater than or equal to L, and L is the number of data layers included in the PUSCH.
- the foregoing technical solution in the embodiment of the present disclosure receives physical uplink shared channel PUSCH scheduling information sent by a network device, where the PUSCH scheduling information includes first indication information and second indication information; and a precoding matrix indicated by the second indication information , Mapping the data layer included in the PUSCH to at least two target antenna panels for transmission, thereby achieving the purpose of simultaneously transmitting the data layer of the PUSCH from multiple antenna panels.
- FIG. 1 is a schematic diagram of weighting forming an intermediate frequency signal in analog beamforming in the related art
- FIG. 2 is a schematic diagram of weighted shaping of a radio frequency signal in analog beamforming in the related art
- FIG. 3 is a schematic diagram of digital-analog mixed beamforming in related technologies
- FIG. 5 is a schematic diagram of PUSCH transmission in an embodiment of the present disclosure.
- FIG. 6 is a second schematic flowchart of a data transmission method according to an embodiment of the present disclosure.
- FIG. 7 is a structural block diagram of a terminal according to an embodiment of the present disclosure.
- FIG. 8 is a schematic block diagram of a terminal according to an embodiment of the present disclosure.
- FIG. 9 is a structural block diagram of a network device according to an embodiment of the present disclosure.
- FIG. 10 is a schematic block diagram of a network device according to an embodiment of the present disclosure.
- MIMO Multiple-Input Multiple-Output
- LTE Long-Term Evolution
- LTE-Advanced, LTE- A Enhanced Long-Term Evolution
- OFDM Orthogonal Frequency Division Multiplexing
- Rel-8 In LTE Rel-8, it can support up to 4 layers of MIMO transmission. Rel-9 focuses on enhancements to Multi-User Multiple Input Multiple Output (MU-MIMO) technology. Transmission Mode (TM) -8 MU-MIMO transmission can support up to 4 downlink data layers. .
- TM Multi-User Multiple Input Multiple Output
- MU-MIMO Transmission Mode
- Rel-10 introduced support for 8 antenna ports to further improve the spatial resolution of channel state information, and further extended the single-user multiple-input multiple-output (Single-User MIMO (SU-MIMO)) transmission capacity to a maximum of eight data layers.
- Rel-13 and Rel-14 introduced FD-MIMO technology to support 32 ports to achieve full-dimensional and vertical beamforming.
- a large-scale antenna technology is introduced in a mobile communication system.
- a fully digital large-scale antenna can have up to 128/256/512 antenna elements and up to 128/256/512 transceivers, each antenna element being connected to a transceiver.
- pilot signals of up to 128/256/512 antenna ports
- the terminal measures channel state information and feeds it back.
- an antenna array with up to 32/64 antenna elements can also be configured.
- a huge beamforming gain is obtained to compensate for signal attenuation caused by path loss.
- the path loss makes the coverage of wireless signals extremely limited.
- the coverage of wireless signals can be extended to a practical range.
- each antenna element has an independent transceiver, which will greatly increase the size, cost and power consumption of the device.
- ADC analog-to-digital converter
- DAC digital-to-analog converter
- the reduction of power consumption and performance improvement are relatively limited.
- a technical solution based on analog beamforming is proposed. As shown in Figure 1 and Figure 2.
- the main feature of analog beamforming is the weighted shaping of intermediate frequency (Figure 1) or radio frequency signals ( Figure 2) by phase shifters.
- FIG. 3 a digital-analog hybrid beamforming transceiver architecture solution is proposed, as shown in FIG. 3.
- the sender and receiver have with Transceivers, number of transmitting antennas Number of receiving antennas
- the maximum number of parallel transport streams supported by beamforming is .
- the hybrid beamforming structure in Figure 3 balances the flexibility of digital beamforming with the low complexity of analog beamforming.
- Both analog beamforming and digital-analog mixed beamforming need to adjust the analog beamforming weights at the transmitting and receiving ends so that the beams formed by them can be aligned with the opposite end of the communication.
- the beamforming weights sent by the base station and the beamforming weights received by the terminal need to be adjusted, while for uplink transmissions, the beamforming weights sent by the terminal and received by the base station need to be adjusted.
- Beamforming weights are usually obtained by sending training signals.
- the base station sends a downlink beam training signal
- the terminal measures the downlink beam training signal, selects the best base station to transmit the beam, and feeds back the beam-related information to the base station. At the same time, it selects the corresponding best receiving beam and stores it locally.
- the UE may have multiple antenna panels for uplink transmission.
- the single antenna panel transmission and the multiple antenna panel transmission are described below.
- a single panel UE can be configured with an SRS resource set for transmit beam scanning.
- Each SRS resource set includes multiple SRS resources, and different SRS resources can be shaped using different beams. Since each panel can only form one analog beam at the same time, different SRS resources (corresponding to different beams) in an SRS resource set are transmitted at different times.
- the gNB determines the optimal transmission beam (that is, the SRS resource with the best reception quality) by receiving the SRS resource set, and instructs the UE.
- the GNB can then configure a second SRS resource set for CSI acquisition, which contains multiple SRS resources, and can use the same or different analog beams (based on previous beam scans).
- the gNB sends an SRI indication in the PUSCH scheduling grant to the second SRS resource set (the SRS resource set used for CSI acquisition) according to the channel estimation situation.
- the UE performs PUSCH transmission according to the beam indicated by the SRI.
- multiple SRS resource sets can be configured for the simulated beam training, where each SRS set corresponds to one panel.
- Different SRS resources of the same SRS resource set (corresponding to a panel) are transmitted at different times.
- SRS resources of different SRS resource sets can be sent at the same or different times.
- the SRS overhead varies linearly with the number of antenna panels. For terminals with a large number of antenna panels (such as vehicles, balloons, and other aircraft with less power and size restrictions), the amount of SRS overhead may be very large.
- an embodiment of the present disclosure provides a data transmission method applied to a terminal configured with At least two antenna panels for uplink transmission, as shown in FIG. 4, the data transmission method includes:
- Step 401 Receive physical uplink shared channel PUSCH scheduling information sent by a network device.
- the PUSCH scheduling information includes first indication information and second indication information.
- the first indication information is used to indicate a data layer included in the PUSCH.
- the two indication information are used to indicate a precoding matrix.
- the PUSCH scheduling information is carried in a PUSCH scheduling grant.
- the first indication information is a transmission rank index (TRI)
- the second indication information is a transmission precoding matrix index (TPMI).
- the precoding is described above.
- the matrix refers to a precoding matrix of K ⁇ L, where K is the sum of the number of digital channels of at least two target antenna panels used to transmit the PUSCH, and L is the number of data layers included in the PUSCH.
- Step 402 Map all data layers of the PUSCH to at least two target antenna panels for transmission according to the precoding matrix indicated by the second instruction information, where the target antenna panels are at least two antenna panels of the terminal. Antenna panel for transmitting PUSCH.
- the terminal performs digital precoding processing based on the foregoing precoding matrix, obtains K data layer transmission signal vectors, and maps the transmission signal vectors to at least two target antenna panels for transmission.
- the data transmission method in the embodiment of the present disclosure receives physical uplink shared channel PUSCH scheduling information sent by a network device, where the PUSCH scheduling information includes first indication information and second indication information; and a precoding matrix indicated by the second indication information , Mapping the data layer included in the PUSCH to at least two target antenna panels for transmission, thereby achieving the purpose of simultaneously transmitting the data layer of the PUSCH from multiple antenna panels.
- the method further includes:
- Step 4021 Send beam training signal resources using the analog beams on the at least two target antenna panels.
- the beam training signal resource here may specifically be a sounding reference signal SRS resource.
- a target beam training signal resource set corresponding to a third target antenna panel is selected, and each of the beam training signal resource sets includes at least one beam training signal.
- the third target antenna panel is any one of the at least two target antenna panels; each of the target beam training signal resource sets is sent on the third target antenna panel using a different analog beam Beam training signal resources, where the beam training signal resources carry beam training signals.
- the base station gNB configures two SRS resource sets for simulated beam training, where each SRS resource set is mapped to an antenna panel panel.
- the specific mapping of the SRS resource set to the panel depends on the implementation of the UE. For example, the UE may map the first SRS resource set used for simulation beam training to panel 1 and the second SRS resource set used for simulation beam training to panel 2; or 2, the first SRS resource set used for simulated beam training An SRS resource set is mapped to panel 2 and a second SRS resource set used for simulated beam training is mapped to panel 1.
- the mapping order may be transparent to the gNB.
- Each SRS resource set includes a set of SRS resources, and they can use different time-frequency resources. For each SRS resource set, the UE uses a different analog beam to send each SRS resource on the corresponding panel.
- Step 4022 Obtain a target transmission beam corresponding to each of the target antenna panels indicated by the network device, where the target transmission beam is obtained by the network device according to the beam training signal.
- the gNB determines the best receiving beam through beam scanning.
- the gNB can select the optimal receiving beam for each panel based on the single-panel transmission assumption. Alternatively, it can also be assumed that all panels are jointly transmitted, and then an optimal receiving beam is obtained.
- the gNB may control the time-frequency resource configuration (such as orthogonal time-frequency resources or the same resource) of the two SRS resource sets.
- gNB can also obtain the optimal transmission beam for each panel (denoted as [BM opt, 1 , BM opt, 2 ]), which respectively corresponds to the optimal SRS resource in the respective SRS resource set (denoted as [SRS opt, 1 , SRS opt, 2 ]).
- the UE can learn [SRS opt, 1 , SRS opt, 2 ], so as to obtain the recommended SRS resources on each panel, and determine the optimal SRS resources on each antenna panel based on the recommended SRS resources on each antenna panel.
- Optimal transmit beam [BM opt, 1 , BM opt, 2 ]).
- the optimal transmission beam may specifically be a transmission beam corresponding to the SRS resource with the best reception quality, such as a transmission beam corresponding to the SRS resource with the strongest received signal power.
- Step 4023 Use each target antenna panel corresponding to the target antenna panel to send an uplink signal resource for acquiring channel state information CSI, and the PUSCH scheduling information is obtained by the network device according to the uplink signal resource.
- the uplink signal resource used to obtain the channel state information CSI is an SRS resource.
- the terminal can enable the network device to estimate the uplink CSI, and perform link adaptation and PUSCH scheduling.
- the uplink signal resource is an uplink signal resource including K ports, K is a sum of the number of digital channels of the at least two target antenna panels, K ports are mapped to at least two of the target antenna panels, and K is A positive integer, and K is greater than or equal to L, where L is the number of data layers included in the PUSCH.
- the network device After the network device determines the best transmission beam on each antenna panel through beam scanning, it further configures the terminal with SRS resources for CSI acquisition. As shown in FIG. 5, it is assumed that multiple data layers of the PUSCH are distributed and transmitted on two target antenna panels, where PUSCH layer 1 to layer A are mapped to the antenna panel 1 for transmission, and A + 1 to L layers are mapped to the antenna. Panel 2 sends, A is a positive integer greater than 1 and less than L.
- the base station gNB configures two SRS resource sets for CSI acquisition, where each SRS resource set is mapped to an antenna panel panel, for example, a third SRS resource set used for CSI acquisition is mapped to antenna panel 1 and will be used for CSI The obtained fourth SRS resource set is mapped on the antenna panel 2.
- the gNB configures an SRS resource containing K ports.
- the SRS resource can be configured to be transmitted periodically, semi-periodically, or non-periodically.
- sending the uplink signal resource used to obtain the channel state information CSI on each target antenna panel by using the target transmission beam corresponding to the target antenna panel includes:
- the beams used by the SRS resources used for CSI measurement sent on each panel are obtained through [SRS opt, 1 , SRS opt, 2 ].
- the SRS port numbers of the antenna panel 1 and the antenna panel 2 are respectively denoted as [p1, p2, ... p N1 ] and [q1, q2, ... q N2 ].
- the ports [p1, p2, ... p N1 ] are mapped to the antenna panel 1, and BM opt, 1 is used as its analog beam. Therefore, the gNB instructs the UE to use the same analog beam as SRS opt, 1 in [p1, p2, ... p N1 ].
- the antenna ports [q1, q2, ... q N2 ] are mapped to panel 2 and BM opt, 2 is used as its analog beam. Therefore, the gNB instructs the UE to use the same analog beam as SRS opt, 2 in [q1, q2, ... q N2 ].
- the correspondence between the port and the target transmission beam may be indicated to the terminal in the following two ways:
- each port can use the same or different uplink transmit beams.
- the K ports are divided into D port groups, and at least one target port group exists in the D port groups, and the target port group is A port group including at least two ports, D is a positive integer greater than 1.
- the above-mentioned correspondence relationship may be indicated by the configuration of the spatial relation information (SpatialRelationInfo) in the high-level information domain.
- Configuration instructions For example, in the second manner, multiple "SpatialRelationInfo" values are provided for the UE, and the port group corresponding to each value is notified to the UE.
- gNB may be Configure two "SpatialRelationInfo" parameters.
- the first "SpatialRelationInfo” corresponds to SRS opt, 1 , which is port [1, 2, ..., N1]; the second "SpatialRelationInfo” corresponds to SRS opt, 2 , that is, port [N1 + 1, ..., N1 + N2].
- the grouping of SRS ports in the SRS resource can be semi-static or dynamic. If the semi-static method is adopted, the number of port groups of the SRS resources and the port numbers in each group are semi-statically configured. If the dynamic mode is adopted, the number of port groups and the port numbers in each group are notified through L1 dynamic signaling (for example, together with the SRS departure permission). If the grouping is performed in a dynamic manner, the grouping information (that is, the number of groups and the port number in each group) can be jointly or independently indicated with uplink transmission beam information (such as "SpatialRelationInfo").
- uplink transmission beam information such as "SpatialRelationInfo"
- the number of SRS port groups is configured semi-statically, the number of SRS ports in each group can be dynamically indicated.
- mapping the data layer included in the PUSCH to at least two target antenna panels for transmission includes:
- the target data layer is any one of the L data layers of the PUSCH.
- the base station after receiving the uplink signal resources used for CSI acquisition, the base station estimates uplink CSI and performs link adaptation and PUSCH scheduling.
- the scheduling permission may include: TRI (transmission rank indicator) to indicate the number of data layers L included in the PUSCH; TPMI (transmit precoding matrix indicator) to indicate the (N1 + N2) ⁇ L precoding matrix W .
- the UE performs digital precoding based on the foregoing information to form a transmission signal vector of length (N1 + N2).
- the N1 data layers corresponding to the port [p1, p2, ... p N1 ] are sent through panel 1, and the beam corresponding to the "SpatialRelationInfo" parameter given by SRS opt, 1 is used; and the port [q1, q2, ...
- the corresponding N2 data layers are sent through panel 2, and the beam corresponding to the "SpatialRelationInfo" parameter given by SRS opt, 2 is used.
- the data transmission method in the embodiment of the present disclosure receives physical uplink shared channel PUSCH scheduling information sent by a network device, where the PUSCH scheduling information includes first indication information and second indication information; and a precoding matrix indicated by the second indication information , Mapping the data layer included in the PUSCH to at least two target antenna panels for transmission, thereby achieving the purpose of simultaneously transmitting the data layer of the PUSCH from multiple antenna panels.
- an embodiment of the present disclosure further provides a data transmission method, which is applied to a network device.
- the network device may be specifically a base station.
- the data transmission method includes steps 601 and 602.
- Step 601 Obtain uplink channel state information CSI according to an uplink signal resource sent by the terminal.
- the uplink signal resource is specifically an SRS resource configured by the base station for the terminal to obtain CSI.
- the network device first determines the optimal transmission beam on each antenna panel according to the beam training signal resource sent by the terminal, and then configures the terminal with the SRS resource for CSI acquisition. As shown in FIG. 5, it is assumed that multiple data layers of the PUSCH are distributed and transmitted on two target antenna panels, where PUSCH layer 1 to layer A are mapped to the antenna panel 1 for transmission, and A + 1 to L layers are mapped to the antenna. Panel 2 sends, A is a positive integer greater than 1 and less than L.
- the base station gNB configures two SRS resource sets for CSI acquisition, where each SRS resource set is mapped to an antenna panel panel, for example, a third SRS resource set used for CSI acquisition is mapped to antenna panel 1 and will be used for CSI The obtained fourth SRS resource set is mapped on the antenna panel 2.
- Step 602 Get physical uplink shared channel PUSCH scheduling information according to the channel state information CSI and send the PUSCH scheduling information to the terminal.
- the PUSCH scheduling information includes first indication information and second indication information, and the first indication information is used to indicate the PUSCH.
- the included data layer, and the second indication information is used to indicate a precoding matrix.
- the PUSCH scheduling information is carried in a PUSCH scheduling grant.
- the base station After the base station receives the uplink signal resources used for CSI acquisition, it estimates the uplink CSI, and performs link adaptation and PUSCH scheduling.
- the scheduling permission may include: TRI (transmission, rank, indicator), which is used to indicate the number L of data layers contained in the PUSCH, and TPMI (transmit, precoding, matrix, indicator), which is used to indicate the K ⁇ L precoding matrix W.
- the terminal after sending the PUSCH scheduling information to the terminal, the terminal performs digital precoding processing on the PUSCH based on the precoding matrix to obtain K data layer transmission signal vectors, and maps the transmission signal vectors to at least two target antenna panels. Send on.
- the method further includes:
- the beam training signal resource herein may specifically be a sounding reference signal SRS resource.
- the base station gNB configures two SRS resource sets for simulated beam training, where each SRS resource set is mapped to an antenna panel panel.
- the specific mapping of the SRS resource set to the panel depends on the implementation of the UE. For example, the UE may map the first SRS resource set used for simulation beam training to panel 1 and the second SRS resource set used for simulation beam training to panel 2; or 2, the first SRS resource set used for simulated beam training An SRS resource set is mapped to panel 2 and a second SRS resource set used for simulated beam training is mapped to panel 1.
- Each SRS resource set includes a set of SRS resources, and they can use different time-frequency resources.
- the UE uses a different analog beam to send each SRS resource on the corresponding panel.
- the gNB determines the best receiving beam through beam scanning.
- the gNB can select the optimal receiving beam for each panel based on the single-panel transmission assumption. Alternatively, it can also be assumed that all panels are jointly transmitted, and then an optimal receiving beam is obtained.
- the gNB may control the time-frequency resource configuration (such as orthogonal time-frequency resources or the same resource) of the two SRS resource sets.
- gNB can also obtain the optimal transmission beam for each panel (denoted as [BM opt, 1 , BM opt, 2 ]), which respectively corresponds to the optimal SRS resource in the respective SRS resource set (denoted as [SRS opt, 1 , SRS opt, 2 ]).
- the UE can learn [SRS opt, 1 , SRS opt, 2 ], so as to obtain the recommended SRS resources on each panel, and determine the optimal SRS resources on each antenna panel based on the recommended SRS resources on each antenna panel.
- Optimal transmit beam [BM opt, 1 , BM opt, 2 ]).
- the optimal transmission beam may specifically be a transmission beam corresponding to the SRS resource with the best reception quality, such as a transmission beam corresponding to the SRS resource with the strongest received signal power.
- the uplink signal resource is an uplink signal resource including K ports, K is a sum of the number of digital channels of the at least two target antenna panels of the terminal, and K ports are mapped to at least two of the target antenna panels K is a positive integer, K is greater than or equal to L, and L is the number of data layers included in the PUSCH.
- the method before acquiring uplink channel state information CSI according to an uplink signal resource sent by the terminal, the method further includes:
- the correspondence between the port and the target transmission beam is indicated to the terminal.
- the corresponding relationship between the port group and the target transmission beam is indicated to the terminal, and the port group includes at least two ports.
- the correspondence between the port and the target transmission beam may be indicated to the terminal in the following two ways:
- each port can use the same or different uplink transmit beams.
- the K ports are divided into D port groups, and at least one target port group exists in the D port groups, and the target port group is A port group including at least two ports, D is a positive integer greater than 1.
- the above-mentioned correspondence relationship may be indicated by the configuration of the spatial relation information (SpatialRelationInfo) of the high-level information domain.
- the spatial relation information may also be used to perform Configuration instructions.
- multiple "SpatialRelationInfo" values are provided for the UE, and the port group corresponding to each value is notified to the UE.
- gNB can be configured with two "SpatialRelationInfo" parameters.
- the first "SpatialRelationInfo” corresponds to SRS opt, 1 , which is the port [1, 2, ..., N1]; the second "SpatialRelationInfo” corresponds to SRS opt, 2 , which is the port [N1 + 1, ..., N1 + N2].
- the grouping of SRS ports in the SRS resource can be semi-static or dynamic. If the semi-static method is adopted, the number of port groups of the SRS resources and the port numbers in each group are semi-statically configured. If the dynamic mode is adopted, the number of port groups and the port numbers in each group are notified through L1 dynamic signaling (for example, together with the SRS departure permission). If the grouping is performed in a dynamic manner, the grouping information (that is, the number of groups and the port number in each group) can be jointly or independently indicated with uplink transmission beam information (such as "SpatialRelationInfo").
- uplink transmission beam information such as "SpatialRelationInfo"
- the number of SRS port groups is configured semi-statically, the number of SRS ports in each group can be dynamically indicated.
- the data transmission method in the embodiment of the present disclosure obtains uplink channel state information CSI according to an uplink signal resource sent by a terminal; according to the channel state information CSI, obtains physical uplink shared channel PUSCH scheduling information and sends it to the terminal so that The terminal maps the data layer included in the PUSCH to at least two target antenna panels and sends the data layer included in the PUSCH according to the precoding matrix indicated by the second instruction information, thereby achieving the purpose of transmitting the data layer of the PUSCH from multiple antenna panels simultaneously.
- an embodiment of the present disclosure further provides a terminal configured with at least two antenna panels for uplink transmission, including: a transceiver 710, a memory 720, a processor 700, and a storage device.
- PUSCH scheduling information sent by a network device, where the PUSCH scheduling information includes first indication information and second indication information, the first indication information is used to indicate a data layer included in the PUSCH, and the second indication information Used to indicate a precoding matrix;
- the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 700 and various circuits of the memory represented by the memory 720 are linked together.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, so they are not described further herein.
- the bus interface provides an interface.
- the transceiver 710 may be multiple elements, including a transmitter and a transceiver, providing a unit for communicating with various other devices over a transmission medium.
- the user interface 730 may also be an interface capable of externally connecting and connecting the required devices.
- the connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like.
- the processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 700 when performing operations.
- the processor 700 is further configured to read a program in the memory 720 and execute the following steps:
- each target antenna panel uses an uplink signal resource for acquiring channel state information CSI using a target transmission beam corresponding to the target antenna panel, and the PUSCH scheduling information is obtained by a network device according to the uplink signal resource.
- the uplink signal resource is an uplink signal resource including K ports, K is a sum of the number of digital channels of the at least two target antenna panels, and K ports are mapped to at least two of the target antenna panels K is a positive integer, K is greater than or equal to L, and L is the number of data layers included in the PUSCH.
- the processor 700 is further configured to read a program in the memory 720 and execute the following steps:
- the processor 700 is further configured to read a program in the memory 720 and execute the following steps:
- the processor 700 is further configured to read a program in the memory 720 and execute the following steps:
- a target beam training signal resource set corresponding to a third target antenna panel is selected, and each of the beam training signal resource sets includes at least one beam training signal.
- the third target antenna panel is any one of the at least two target antenna panels;
- a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the following steps are implemented:
- PUSCH scheduling information sent by a network device, where the PUSCH scheduling information includes first indication information and second indication information, the first indication information is used to indicate a data layer included in the PUSCH, and the second indication information Used to indicate a precoding matrix;
- an embodiment of the present disclosure further provides a terminal configured with at least two antenna panels for uplink transmission, including:
- the receiving module 801 is configured to receive physical uplink shared channel PUSCH scheduling information sent by a network device.
- the PUSCH scheduling information includes first indication information and second indication information, and the first indication information is used to indicate a data layer included in the PUSCH.
- the second indication information is used to indicate a precoding matrix;
- a first sending module 802 configured to map the data layer included in the PUSCH to at least two target antenna panels for transmission according to a precoding matrix indicated by the second instruction information, where the target antenna panels are An antenna panel for transmitting PUSCH among at least two antenna panels.
- a second sending module configured to send a beam training signal resource using an analog beam on the at least two target antenna panels
- a first acquisition module configured to acquire a target transmission beam corresponding to each of the target antenna panels indicated by a network device, where the target transmission beam is obtained by a network device according to the beam training signal resource;
- a third sending module configured to send, on each target antenna panel, an uplink signal resource used to obtain channel state information CSI using a target transmission beam corresponding to the target antenna panel, and the PUSCH scheduling information is a network device according to the uplink Signal resources are obtained.
- the uplink signal resource is an uplink signal resource including K ports, K is a sum of the number of digital channels of the at least two target antenna panels, and K ports are mapped to at least two of the targets On the antenna panel, K is a positive integer, K is greater than or equal to L, and L is the number of data layers included in the PUSCH.
- the third sending module includes:
- a determining submodule configured to determine a first target transmission beam corresponding to the first target port according to the correspondence between the port and the target transmission beam indicated by the network device;
- a first sending submodule is configured to send an uplink signal resource of the first target port on a first target antenna panel corresponding to the first target transmit beam.
- the first sending module includes:
- a first acquisition submodule configured to perform precoding processing on the L data layers of the PUSCH according to a precoding matrix indicated by the second indication information, to obtain a transmission signal vector including K data layers, where the Each data layer of the transmitted signal vector corresponds to one said port;
- a second acquisition submodule configured to acquire a second target port corresponding to the target data layer of the sent signal vector
- a second sending submodule configured to send a target data layer of the sending signal vector on a second target antenna panel by using a second target transmitting beam corresponding to the second target port, where the second target antenna panel is The second target port has an antenna panel in a mapping relationship.
- the second sending module includes:
- a third sending submodule is configured to send each beam training signal resource in the target beam training signal resource set on the third target antenna panel using a different analog beam.
- the terminal in the embodiment of the present disclosure receives physical uplink shared channel PUSCH scheduling information sent by a network device, where the PUSCH scheduling information includes first indication information and second indication information; and according to a precoding matrix indicated by the second indication information,
- the data layer included in the PUSCH is mapped to at least two target antenna panels for transmission, thereby achieving the purpose of simultaneously transmitting the data layer of the PUSCH from multiple antenna panels.
- an embodiment of the present disclosure further provides a network device.
- the network device is specifically a base station, and includes a memory 920, a processor 900, a transceiver 910, a bus interface, and a memory stored in the memory 920 and may be processed.
- a computer program running on the processor 900, the processor 900 is configured to read the program in the memory 920, and execute the following processes:
- the PUSCH scheduling information includes first indication information and second indication information
- the first indication information is used to indicate data included in the PUSCH Layer
- the second indication information is used to indicate a precoding matrix
- the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 900 and various circuits of the memory represented by the memory 920 are linked together.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, so they are not described further herein.
- the bus interface provides an interface.
- the transceiver 910 may be multiple elements, including a transmitter and a transceiver, providing a unit for communicating with various other devices over a transmission medium.
- the processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 when performing operations.
- processor 900 executes the computer program, the following steps may also be implemented:
- the uplink signal resource is an uplink signal resource including K ports, K is a sum of the number of digital channels of at least two target antenna panels of the terminal, and K ports are mapped to at least two of the target antenna panels K is a positive integer, K is greater than or equal to L, and L is the number of data layers included in the PUSCH.
- processor 900 executes the computer program, the following steps may also be implemented:
- the correspondence between the port and the target transmission beam is indicated to the terminal.
- processor 900 executes the computer program, the following steps may also be implemented:
- the corresponding relationship between the port group and the target transmission beam is indicated to the terminal, where the K ports are divided into D port groups, and at least one target port group exists in the D port groups, and the target port A group is a port group including at least two ports, and D is a positive integer greater than 1.
- a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the following steps are implemented:
- the PUSCH scheduling information includes first indication information and second indication information
- the first indication information is used to indicate data included in the PUSCH Layer
- the second indication information is used to indicate a precoding matrix
- an embodiment of the present disclosure further provides a network device, including:
- a second obtaining module 1001 configured to obtain uplink channel state information CSI according to an uplink signal resource sent by the terminal;
- a fourth sending module 1002 is configured to obtain physical uplink shared channel PUSCH scheduling information according to the channel state information CSI and send the PUSCH scheduling information to the terminal, where the PUSCH scheduling information includes first indication information and second indication information, and the first indication The information is used to indicate a data layer included in the PUSCH, and the second indication information is used to indicate a precoding matrix.
- a third acquisition module configured to acquire a beam training signal resource sent by the terminal using at least two target antenna panels using an analog beam
- a determining module is configured to perform beam scanning processing on the beam training signal resource, determine a target transmission beam corresponding to each of the target antenna panels, and instruct the terminal.
- the uplink signal resource is an uplink signal resource including K ports, K is a sum of the number of digital channels of at least two target antenna panels of the terminal, and K ports are mapped to at least two of the On the target antenna panel, K is a positive integer, K is greater than or equal to L, and L is the number of data layers included in the PUSCH.
- An instruction module is used for the second acquisition module to indicate the correspondence between the port and the target transmission beam to the terminal before acquiring the uplink channel state information CSI according to the uplink signal resource sent by the terminal.
- the instruction module is configured to indicate a correspondence between each of the ports and a target transmission beam to a terminal;
- the K ports are divided into D port groups, and at least one target port group exists in the D port groups.
- the target port group is a port group including at least two ports, and D is a positive integer greater than 1.
- the network device obtains uplink channel state information CSI according to an uplink signal resource sent by a terminal; according to the channel state information CSI, obtains physical uplink shared channel PUSCH scheduling information and sends it to the terminal, so that the terminal According to the precoding matrix indicated by the second indication information, the data layer included in the PUSCH is mapped to at least two target antenna panels for transmission, thereby achieving the purpose of transmitting the data layer of the PUSCH from multiple antenna panels simultaneously.
- An embodiment of the present disclosure further provides a computer-readable storage medium on which a computer program is stored.
- a computer program is stored.
- the computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.
- the electronic hardware may include, but is not limited to, electronic circuits, Application Specific Integrated Circuits (ASICs), programmable logic devices, programmable processors, and the like.
- the disclosed systems, devices, and methods may be implemented in other ways.
- the device embodiments described above are only schematic.
- the division of the unit is only a logical function division.
- multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
- the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
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Abstract
Description
Claims (30)
- 一种数据传输方法,应用于终端,所述终端配置有至少两个用于上行链路传输的天线面板,包括:接收网络设备发送的物理上行共享信道PUSCH调度信息,所述PUSCH调度信息包括第一指示信息和第二指示信息,所述第一指示信息用于指示PUSCH包括的数据层,所述第二指示信息用于指示预编码矩阵;根据所述第二指示信息指示的预编码矩阵,将所述PUSCH包括的数据层映射到至少两个目标天线面板上发送,所述目标天线面板为所述终端的至少两个天线面板中用于传输PUSCH的天线面板。
- 根据权利要求1所述的数据传输方法,其中,所述接收网络设备发送的物理上行共享信道PUSCH调度信息之前,还包括:在所述至少两个目标天线面板上使用模拟波束发送波束训练信号资源;获取网络设备指示的每个所述目标天线面板对应的目标发送波束,所述目标发送波束是网络设备根据所述波束训练信号资源得到的;在每个目标天线面板上使用所述目标天线面板对应的目标发送波束发送用于获取信道状态信息CSI的上行信号资源,所述PUSCH调度信息为网络设备根据所述上行信号资源得到的。
- 根据权利要求2所述的数据传输方法,其中,所述上行信号资源为包括K个端口的上行信号资源,K为所述至少两个目标天线面板的数字通道数之和,K个端口映射到至少两个所述目标天线面板上,K为正整数,且K大于或等于L,L为PUSCH包括的数据层的个数。
- 根据权利要求3所述的数据传输方法,其中,所述在每个目标天线面板上使用所述目标天线面板对应的目标发送波束发送用于获取信道状态信息CSI的上行信号资源,包括:根据网络设备指示的端口与目标发送波束的对应关系,确定第一目标端口对应的第一目标发送波束;在与所述第一目标发送波束对应的第一目标天线面板上,发送所述第一目标端口的上行信号资源。
- 根据权利要求3所述的数据传输方法,其中,所述根据所述第二指示信息指示的预编码矩阵,将所述PUSCH包括的数据层映射到至少两个目标天线面板上发送,包括:根据所述第二指示信息指示的预编码矩阵,对所述PUSCH的L个数据层进行预编码处理,得到包括K个数据层的发送信号向量,其中,所述发送信号向量的每个数据层与一个所述端口对应;获取所述发送信号向量的目标数据层对应的第二目标端口;在第二目标天线面板上,使用所述第二目标端口对应的第二目标发送波束发送所述发送信号向量的目标数据层,所述第二目标天线面板为与所述第二目标端口具有映射关系的天线面板。
- 根据权利要求2所述的数据传输方法,其中,在所述至少两个目标天线面板上使用模拟波束发送波束训练信号资源,包括:在网络设备为每个所述目标天线面板配置的波束训练信号资源集合中,选取第三目标天线面板对应的目标波束训练信号资源集合,每个所述波束训练信号资源集合包括至少一个波束训练信号资源,所述第三目标天线面板为所述至少两个目标天线面板中的任意一个;在所述第三目标天线面板上使用不同的模拟波束发送所述目标波束训练信号资源集合中的每个波束训练信号资源。
- 一种数据传输方法,应用于网络设备,包括:根据终端发送的上行信号资源,获取上行链路的信道状态信息CSI;根据所述信道状态信息CSI,得到物理上行共享信道PUSCH调度信息并发送给终端,所述PUSCH调度信息包括第一指示信息和第二指示信息,所述第一指示信息用于指示PUSCH包括的数据层,所述第二指示信息用于指示预编码矩阵。
- 根据权利要求7所述的数据传输方法,其中,根据终端发送的上行信号资源,获取上行链路的信道状态信息CSI之前,还包括:获取终端在至少两个目标天线面板上使用模拟波束发送的波束训练信号资源;对所述波束训练信号资源进行波束扫描处理,确定每个所述目标天线面 板对应的目标发送波束并指示给终端。
- 根据权利要求7所述的数据传输方法,其中,所述上行信号资源为包括K个端口的上行信号资源,K为终端的至少两个目标天线面板的数字通道数之和,K个端口映射到至少两个所述目标天线面板上,K为正整数,且K大于或等于L,L为PUSCH包括的数据层的个数。
- 根据权利要求9所述的数据传输方法,其中,根据终端发送的上行信号资源,获取上行链路的信道状态信息CSI之前,还包括:将所述端口与目标发送波束的对应关系指示给终端。
- 根据权利要求10所述的数据传输方法,其中,将所述端口与目标发送波束的对应关系指示给终端,包括:将每个所述端口与目标发送波束的对应关系指示给终端;或者,将端口组与目标发送波束的对应关系指示给终端,其中,所述K个端口被划分成D个端口组,且所述D个端口组中存在至少一个目标端口组,所述目标端口组为包括至少两个端口的端口组,D为大于1的正整数。
- 一种终端,所述终端配置有至少两个用于上行链路传输的天线面板,所述终端包括:收发机、存储器、处理器及存储在存储器上并可在处理器上运行的程序,其中,所述处理器执行所述程序时实现以下步骤:通过收发机接收网络设备发送的物理上行共享信道PUSCH调度信息,所述PUSCH调度信息包括第一指示信息和第二指示信息,所述第一指示信息用于指示PUSCH包括的数据层,所述第二指示信息用于指示预编码矩阵;根据所述第二指示信息指示的预编码矩阵,将所述PUSCH包括的数据层映射到至少两个目标天线面板上发送,所述目标天线面板为所述终端的至少两个天线面板中用于传输PUSCH的天线面板。
- 根据权利要求12所述的终端,其中,所述处理器执行所述程序时还实现以下步骤:在接收网络设备发送的物理上行共享信道PUSCH调度信息之前,在所述至少两个目标天线面板上使用模拟波束发送波束训练信号资源;获取网络设备指示的每个所述目标天线面板对应的目标发送波束,所述目标发送波束是网络设备根据所述波束训练信号资源得到的;在每个目标天线面板上使用所述目标天线面板对应的目标发送波束发送用于获取信道状态信息CSI的上行信号资源,所述PUSCH调度信息为网络设备根据所述上行信号资源得到的。
- 根据权利要求13所述的终端,其中,所述上行信号资源为包括K个端口的上行信号资源,K为所述至少两个目标天线面板的数字通道数之和,K个端口映射到至少两个所述目标天线面板上,K为正整数,且K大于或等于L,L为PUSCH包括的数据层的个数。
- 根据权利要求14所述的终端,其中,所述处理器执行所述程序时还实现以下步骤:根据网络设备指示的端口与目标发送波束的对应关系,确定第一目标端口对应的第一目标发送波束;在与所述第一目标发送波束对应的第一目标天线面板上,发送所述第一目标端口的上行信号资源。
- 根据权利要求14所述的终端,其中,所述处理器执行所述程序时还实现以下步骤:根据所述第二指示信息指示的预编码矩阵,对所述PUSCH的L个数据层进行预编码处理,得到包括K个数据层的发送信号向量,其中,所述发送信号向量的每个数据层与一个所述端口对应;获取所述发送信号向量的目标数据层对应的第二目标端口;在第二目标天线面板上,使用所述第二目标端口对应的第二目标发送波束发送所述发送信号向量的目标数据层,所述第二目标天线面板为与所述第二目标端口具有映射关系的天线面板。
- 根据权利要求13所述的终端,其中,所述处理器执行所述程序时还实现以下步骤:在网络设备为每个所述目标天线面板配置的波束训练信号资源集合中,选取第三目标天线面板对应的目标波束训练信号资源集合,每个所述波束训练信号资源集合包括至少一个波束训练信号资源,所述第三目标天线面板为所述至少两个目标天线面板中的任意一个;在所述第三目标天线面板上使用不同的模拟波束发送所述目标波束训练 信号资源集合中的每个波束训练信号资源。
- 一种计算机可读存储介质,其上存储有计算机程序,该计算机程序被处理器执行时实现如权利要求1至6中任一项所述数据传输方法的步骤。
- 一种网络设备,包括:收发机、存储器、处理器及存储在存储器上并可在处理器上运行的程序,其中,所述处理器执行所述程序时实现以下步骤:根据终端发送的上行信号资源,获取上行链路的信道状态信息CSI;根据所述信道状态信息CSI,得到物理上行共享信道PUSCH调度信息并发送给终端,所述PUSCH调度信息包括第一指示信息和第二指示信息,所述第一指示信息用于指示PUSCH包括的数据层,所述第二指示信息用于指示预编码矩阵。
- 根据权利要求19所述的网络设备,其中,所述处理器执行所述程序时还实现以下步骤:在根据终端发送的上行信号资源,获取上行链路的信道状态信息CSI之前,获取终端在至少两个目标天线面板上使用模拟波束发送的波束训练信号资源;对所述波束训练信号资源进行波束扫描处理,确定每个所述目标天线面板对应的目标发送波束并指示给终端。
- 根据权利要求19所述的网络设备,其中,所述上行信号资源为包括K个端口的上行信号资源,K为终端的至少两个目标天线面板的数字通道数之和,K个端口映射到至少两个所述目标天线面板上,K为正整数,且K大于或等于L,L为PUSCH包括的数据层的个数。
- 根据权利要求21所述的网络设备,其中,所述处理器执行所述程序时还实现以下步骤:在根据终端发送的上行信号资源,获取上行链路的信道状态信息CSI之前,将所述端口与目标发送波束的对应关系指示给终端。
- 根据权利要求22所述的网络设备,其中,所述处理器执行所述程序时还实现以下步骤:将每个所述端口与目标发送波束的对应关系指示给终端;或者,将端口组与目标发送波束的对应关系指示给终端,其中,所述K个端口被划分成D个端口组,且所述D个端口组中存在至少一个目标端口组,所述目标端口组为包括至少两个端口的端口组,D为大于1的正整数。
- 一种计算机可读存储介质,其上存储有计算机程序,该计算机程序被处理器执行时实现如权利要求7至11中任一项所述数据传输方法的步骤。
- 一种终端,所述终端配置有至少两个用于上行链路传输的天线面板,包括:接收模块,用于接收网络设备发送的物理上行共享信道PUSCH调度信息,所述PUSCH调度信息包括第一指示信息和第二指示信息,所述第一指示信息用于指示PUSCH包括的数据层,所述第二指示信息用于指示预编码矩阵;第一发送模块,用于根据所述第二指示信息指示的预编码矩阵,将所述PUSCH包括的数据层映射到至少两个目标天线面板上发送,所述目标天线面板为所述终端的至少两个天线面板中用于传输PUSCH的天线面板。
- 根据权利要求25所述的终端,还包括:第二发送模块,用于在所述至少两个目标天线面板上使用模拟波束发送波束训练信号资源;第一获取模块,用于获取网络设备指示的每个所述目标天线面板对应的目标发送波束,所述目标发送波束是网络设备根据所述波束训练信号资源得到的;第三发送模块,用于在每个目标天线面板上使用所述目标天线面板对应的目标发送波束发送用于获取信道状态信息CSI的上行信号资源,所述PUSCH调度信息为网络设备根据所述上行信号资源得到的。
- 根据权利要求26所述的终端,其中,所述上行信号资源为包括K个端口的上行信号资源,K为所述至少两个目标天线面板的数字通道数之和,K个端口映射到至少两个所述目标天线面板上,K为正整数,且K大于或等于L,L为PUSCH包括的数据层的个数。
- 一种网络设备,包括:第二获取模块,用于根据终端发送的上行信号资源,获取上行链路的信 道状态信息CSI;第四发送模块,用于根据所述信道状态信息CSI,得到物理上行共享信道PUSCH调度信息并发送给终端,所述PUSCH调度信息包括第一指示信息和第二指示信息,所述第一指示信息用于指示PUSCH包括的数据层,所述第二指示信息用于指示预编码矩阵。
- 根据权利要求28所述的网络设备,还包括:第三获取模块,用于获取终端在至少两个目标天线面板上使用模拟波束发送的波束训练信号资源;确定模块,用于对所述波束训练信号资源进行波束扫描处理,确定每个所述目标天线面板对应的目标发送波束并指示给终端。
- 根据权利要求28所述的网络设备,其中,所述上行信号资源为包括K个端口的上行信号资源,K为终端的至少两个目标天线面板的数字通道数之和,K个端口映射到至少两个所述目标天线面板上,K为正整数,且K大于或等于L,L为PUSCH包括的数据层的个数。
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US11985654B2 (en) | 2024-05-14 |
TW202010355A (zh) | 2020-03-01 |
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US20210168839A1 (en) | 2021-06-03 |
JP2021533701A (ja) | 2021-12-02 |
CN110838856A (zh) | 2020-02-25 |
TWI711334B (zh) | 2020-11-21 |
EP3826198A1 (en) | 2021-05-26 |
JP7258123B2 (ja) | 2023-04-14 |
KR20210046030A (ko) | 2021-04-27 |
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