CN111934732A - Method, terminal, base station and storage medium for transmitting uplink data channel - Google Patents

Method, terminal, base station and storage medium for transmitting uplink data channel Download PDF

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CN111934732A
CN111934732A CN202010791622.6A CN202010791622A CN111934732A CN 111934732 A CN111934732 A CN 111934732A CN 202010791622 A CN202010791622 A CN 202010791622A CN 111934732 A CN111934732 A CN 111934732A
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reference signal
data channel
uplink data
uplink
precoding matrix
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张淑娟
蒋创新
高波
鲁照华
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2021/111442 priority patent/WO2022028617A1/en
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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
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • 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
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0473—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking constraints in layer or codeword to antenna mapping into account

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  • Mobile Radio Communication Systems (AREA)

Abstract

The application provides a method, a terminal, a base station and a storage medium for transmitting an uplink data channel, wherein the method comprises the following steps: determining parameters of an uplink data channel according to the downlink elements; and sending the uplink data channel according to the parameters of the uplink data channel. According to the technical scheme, the parameters of the uplink data channel can be acquired under the condition that the beam in one direction is updated according to the beam in the other direction in the beam communication.

Description

Method, terminal, base station and storage medium for transmitting uplink data channel
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, a terminal, a base station, and a storage medium for transmitting an uplink data channel.
Background
In the beam communication, under the condition that the beam reciprocity exists between the uplink and the downlink at the transmitting and receiving ends, the beam in the other direction can be updated according to the beam in one direction, the transmitting power of the terminal is saved, the aligning speed of the beams at the transmitting and receiving ends is improved, but the parameters of the uplink data channel lack a corresponding acquisition scheme at the moment.
Disclosure of Invention
The present embodiment mainly aims to provide a method, a terminal, a base station, and a storage medium for transmitting an uplink data channel, which aim to obtain parameters of the uplink data channel when the speed of beam alignment at the transmitting end and the receiving end is increased.
The embodiment of the application provides a method for sending an uplink data channel, which is based on a terminal and comprises the following steps:
determining parameters of an uplink data channel according to the downlink elements;
and sending the uplink data channel according to the parameters of the uplink data channel.
The embodiment of the present application further provides a method for sending an uplink data channel, which is based on a terminal and includes:
determining a precoding matrix of an uplink data channel;
determining a sending antenna port corresponding to the precoding matrix;
mapping the layer data of the uplink data channel to the transmitting antenna port through the precoding matrix;
transmitting the uplink data channel on the antenna port;
wherein the transmit antenna port comprises a demodulation reference signal port of the uplink data channel.
The embodiment of the present application further provides a method for sending an uplink data channel, which is based on a terminal and includes:
receiving first signaling information, wherein the first signaling information comprises a first reference signal resource set;
receiving second signaling information, and determining a second reference signal resource set according to the second signaling information;
determining a third set of reference signal resources, wherein reference signal resources in the third set of reference signal resources belong to the second set of reference signal resources;
determining a transmission beam of an uplink data channel according to the third reference signal resource set;
and sending the uplink data channel by adopting the determined sending beam.
The embodiment of the present application further provides a method for sending an uplink control channel, which is based on a terminal and includes:
and determining a precoding matrix of the uplink control channel.
The embodiment of the present application further provides a method for receiving an uplink data channel, which is based on a base station and includes:
and receiving the uplink data channel sent by the terminal according to the parameters of the uplink data channel, wherein the parameters of the uplink data channel are set to be determined according to the downlink elements.
The embodiment of the present application further provides a method for sending an uplink data channel, which is based on a base station and includes:
receiving an uplink data channel from a transmitting antenna port;
the antenna ports correspond to a precoding matrix of an uplink data channel, and the antenna ports include demodulation reference signal ports of the uplink data channel.
The embodiment of the present application further provides a method for sending an uplink data channel, which is based on a base station and includes:
sending first signaling information, wherein the first signaling information comprises a first reference signal resource set;
sending and receiving second signaling information, and indicating the terminal to determine a second reference signal resource set according to the second signaling information;
receiving an uplink data channel through a transmit beam; wherein the transmission beam is determined according to a third set of reference signal resources, reference signal resources in the third set of reference signal resources belonging to the second set of reference signal resources.
The embodiment of the present application further provides a method for sending an uplink control channel, which is based on a base station and includes:
and sending signaling information for indicating the terminal to determine a precoding matrix of the uplink control channel.
The embodiment of the application further provides a terminal, which includes a processor, and the processor is configured to implement the method for sending the uplink data channel provided by the embodiment.
The embodiment of the present application further provides a base station, where the base station includes a processor, and the processor is configured to implement the method for sending the uplink data channel provided in the embodiment.
A storage medium used for computer-readable storage is provided in an embodiment of the present application, where the storage medium stores one or more programs, and the one or more programs are executable by one or more processors to implement the method for transmitting an uplink data channel provided in the embodiment.
According to the method, the terminal, the base station and the storage medium for transmitting the uplink data channel, the parameters of the uplink data channel are determined through the downlink elements, the problem that the parameters of the uplink data channel cannot be acquired under the condition that the beams in one direction are updated according to the beams in the other direction to achieve beam alignment at two ends is solved, and the parameters of the uplink data channel are acquired.
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Fig. 1 is a flowchart of a method for transmitting an uplink data channel based on a terminal according to an embodiment of the present application.
Fig. 2 is a flowchart of a method for transmitting an uplink data channel based on a terminal according to an embodiment of the present application.
Fig. 3 is a flowchart of a method for transmitting an uplink data channel based on a terminal according to an embodiment of the present application.
Fig. 4 is a flowchart of a method for transmitting an uplink data channel based on a terminal according to an embodiment of the present application.
Fig. 5 is a flowchart of a method for transmitting an uplink data channel based on a base station according to an embodiment of the present application.
Fig. 6 is a flowchart of a method for transmitting an uplink data channel based on a base station according to an embodiment of the present application.
Fig. 7 is a flowchart of a method for transmitting an uplink data channel based on a base station according to an embodiment of the present application.
Fig. 8 is a flowchart of a method for transmitting an uplink data channel based on a base station according to an embodiment of the present application.
Fig. 9 is a schematic structural diagram of a terminal according to an embodiment of the present application.
Fig. 10 is a schematic structural diagram of a base station according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for the convenience of description of the present application, and have no peculiar meaning by themselves. Thus, "module", "component" or "unit" may be used mixedly.
In beam communication, how to ensure beam alignment at the transmitting end and the receiving end in real time is a core technical means for improving system performance, for example, a transmission beam of an Uplink data Channel PUSCH (Physical Uplink Shared Channel) may be acquired according to a downlink reference signal, an Uplink measurement reference signal resource corresponding to the PUSCH is not transmitted before the PUSCH is transmitted, and at this time, parameters of the PUSCH, such as a transmission antenna port after precoding, a precoding matrix, a power parameter, and the like, do not have an effective acquisition method yet.
As shown in fig. 1, this embodiment provides a method for sending an uplink data channel, which is based on a terminal and includes:
s110, determining parameters of an uplink data channel according to downlink elements;
and S120, sending the uplink data channel according to the parameters of the uplink data channel.
The terminal determines the parameters of the uplink data channel according to the downlink elements, and can transmit the uplink data channel by adopting the determined parameters of the uplink data channel. Then, in order to determine the parameters of the uplink data channel according to the downlink elements, the terminal may determine the parameters of the uplink data channel according to the pre-established correspondence between the downlink elements and the parameters of the uplink data channel.
In one implementation, the parameters of the uplink data channel include a precoding matrix;
wherein the precoding matrix satisfies one of the following characteristics:
the precoding matrix is an identity matrix;
the number of rows corresponding to the precoding matrix is the number of transmitting antenna ports of the uplink data channel;
and the rows of the precoding matrix correspond to demodulation reference signal ports of an uplink data channel.
In one implementation, the parameter of the uplink data channel includes a transmission antenna port after precoding, and the transmission antenna port satisfies at least one of the following characteristics:
the transmitting antenna port comprises a demodulation reference signal port of the uplink data channel;
and the transmitting antenna ports are obtained according to the number of the transmitting antenna ports of the uplink data channel.
In one implementation, the number of the transmit antenna ports at least includes one of the following characteristics:
the number of the transmitting antenna ports and the downlink elements have a corresponding relation; wherein, different downlink reference signal resources can correspond to different numbers of transmitting antennas;
a corresponding relation exists between the number of the transmitting antenna ports and beam indication information, wherein the beam indication information comprises indication information of the downlink elements; different downlink reference signal resources can correspond to different numbers of transmitting antennas;
a corresponding relation exists between the number of the sending antenna ports and the partial Bandwidth (BWP);
the number of the transmitting antenna ports and the configuration information PUSCH-configuration of the uplink data channel have a corresponding relation;
the number of the transmitting antenna ports and the service cell have a corresponding relation;
the number of the transmitting antenna ports and the service cell group have a corresponding relation;
the number of the transmitting antenna ports and the control channel resource group have a corresponding relation;
a corresponding relation exists between the number of the transmitting antenna ports and a first communication node, wherein the first communication node is a communication node for transmitting the uplink data channel;
and the number of the transmitting antenna ports is related to the capability information reported by the first communication node.
In one implementation, the correspondence between the number of the transmit antenna ports and the control channel resource group includes at least one of:
the control channel resource group is a control channel resource group corresponding to the preset downlink element;
the control channel resource group is a control channel resource group in which a control channel for scheduling the uplink data channel is located.
In one implementation, the parameter is characterized by at least one of:
a corresponding relation exists between the parameters and the downlink elements;
a corresponding relationship exists between the parameter and first information, wherein the first information includes the downlink element and at least one of the following information: the method comprises the steps of sending an antenna port, sending an antenna port group, an uplink sending panel number, an uplink measurement reference signal resource and an uplink measurement reference signal resource group;
a corresponding relation exists between the parameter and a codepoint of a beam indication domain, wherein the beam indication domain comprises an uplink reference signal resource or the downlink element;
a corresponding relationship exists between the parameter and a Control-resource set (CORESET) group, wherein the CORESET group is a CORESET group corresponding to the downlink element, and the downlink element includes a downlink reference signal resource.
In one implementation, the parameters include at least one of: the usage of the spatial transmission filter, the precoding matrix, the power parameter, the demodulation reference signal port information, the transmission antenna port, the number of the transmission antenna ports, the transmission antenna port group, the uplink transmission panel number and the measurement reference signal resource set corresponding to the uplink data channel.
In one implementation, the downlink element includes at least one of: downlink channel, downlink reference signal resource, and CORESET group.
In one implementation, the CORESET group satisfies one of the following characteristics:
the CORESET group comprises a control channel for scheduling the downlink element;
the CORESET group includes a control channel that schedules the uplink data channel.
In one implementation, the downlink element includes the downlink reference signal resource;
the transmitting wave beam of the uplink data channel is obtained according to the downlink reference signal resource;
wherein the beam information comprises one of: transmitting a spatial filter, precoding matrix.
As shown in fig. 2, this embodiment further provides a method for sending an uplink data channel, which is based on a terminal and includes:
s210, determining a precoding matrix of an uplink data channel;
s220, determining a transmitting antenna port corresponding to the precoding matrix;
s230, mapping the layer data of the uplink data channel to the transmitting antenna port through the precoding matrix;
s240, sending the uplink data channel on the antenna port;
wherein the transmit antenna port comprises a demodulation reference signal port of the uplink data channel.
And an antenna port after the uplink data channel PUSCH precoding is a demodulation reference signal port of the PUSCH. And mapping the layer to the port based on a preset formula.
In one implementation, the precoding matrix includes at least one of the following features:
the precoding matrix is an identity matrix;
the precoding matrix is obtained according to downlink reference signal resources.
In one implementation, the transmission beam of the uplink data channel is obtained according to a downlink reference signal resource;
wherein the transmit beam includes at least one of a spatial transmit filter and a precoding matrix.
Determining a precoding matrix W of the PUSCH according to the reference signal type indicated by the beam information indication field in the PUSCH and/or the number of spatial relationship reference signal resources corresponding to one DMRS port of the PUSCH;
the W satisfies the following characteristics:
when the beam indication field indicates the uplink reference signal and is SRS for codebook, the PUSCH precoding matrix W is acquired according to the TPMI indicated in the DCI;
otherwise, the W is an identity matrix;
when the beam indication field indicates the uplink reference signal and is SRS for codebook, the PUSCH precoding matrix W is acquired according to the TPMI indicated in the DCI;
when the beam indication domain indicates that the uplink reference signal is SRS for non codebook and one DMRS port corresponds to one spatial relation reference signal resource on one RE, the PUSCH precoding matrix W is an identity matrix;
when the beam indication field indicates that the uplink reference signal is the SRS for non codebook and one DMRS port corresponds to a plurality of spatial relationship reference signal resources on one RE, the row number of the PUSCH precoding matrix W is larger than the column number, and when the beam indication field indicates the downlink reference signal, the PUSCH precoding matrix W is a unit matrix;
when the beam indicating field indicates a downlink reference signal, the PUSCH precoding matrix W is an identity matrix;
and when the beam indication field indicates the downlink reference signal, determining the PUSCH precoding matrix W according to the downlink reference signal resource and the number of the transmitting antenna ports of the PUSCH.
And the number of rows of the PUSCH precoding matrix W is greater than the number of columns, including that W is a lower triangular matrix, and only one element value on each row of W is 1.
The number of rows of the PUSCH precoding matrix W is greater than the number of columns, and the ith column of W is
Figure BDA0002623947180000051
Element to element
Figure BDA0002623947180000052
The element is 1, and the other elements are 0, wherein BiIs the number of spatial relationship reference signal resources corresponding to the ith DMRS port.
The number of the transmitting antenna ports is configured in the following signaling information:
control signaling for UE-Specific;
serving cell-configuration information;
BWP-configure information;
in the PUSCH-configuration information;
a TCI state configuration information;
a code point of beam indicator field configuration information.
As shown in fig. 3, this embodiment further provides a method for sending an uplink data channel, which is based on a terminal and includes:
s310, receiving first signaling information, wherein the first signaling information comprises a first reference signal resource set;
s320, receiving second signaling information, and determining a second reference signal resource set according to the second signaling information;
s330, determining a third reference signal resource set, wherein the reference signal resources in the third reference signal resource set belong to the second reference signal resource set;
s340, determining a transmitting beam of an uplink data channel according to the third reference signal resource set;
and S350, sending the uplink data channel by adopting the determined sending beam.
In one implementation, the second signaling information includes at least one of:
a second reference signal resource index included in the second set of reference signal resources, wherein a reference signal resource in the second set of reference signal resources belongs to the first set of reference signal resources;
a downlink reference signal resource index corresponding to the second reference signal resource set, wherein a transmission beam of a reference signal resource in the second reference signal resource set is obtained according to the downlink reference signal resource;
a first reference signal resource set index, where the second reference signal resource set is a first reference signal resource set corresponding to the first reference signal resource set index, and the first signaling information includes at least one first reference signal resource set.
In one implementation, the second set of reference signal resources and/or the third set of reference signal resources includes at least one of:
an uplink measurement reference signal resource set;
the uplink measurement reference signal resource set is used as a non-codebook;
the uplink measurement reference signal resource set is used as a codebook;
and scheduling the reference signal resource set corresponding to the beam indication domain in the DCI of the uplink data channel.
In one implementation, the first signaling information includes RRC signaling information;
the second signaling information includes MAC-CE signaling information.
In one implementation, before the determining a transmission beam of an uplink data channel according to the third set of reference signal resources, the method further includes:
receiving third signaling information, wherein the third signaling information includes a third reference signal resource set, and wherein the third signaling information includes DCI signaling information.
In one implementation, the transmit beam includes at least one of a spatial transmit filter and a precoding matrix.
As shown in fig. 4, this embodiment further provides a method for sending an uplink control channel, where based on a terminal, the method includes:
s410, determining a precoding matrix of the uplink control channel.
In one implementation, the determining the precoding matrix of the uplink control channel is determined in case one of the following conditions is satisfied,
the number of ports included in the transmission beam reference signal resource corresponding to the uplink control channel is more than 1;
the number of the transmitting antennas of the uplink control channel is more than 1.
In one implementation, the determining a precoding matrix of an uplink control channel includes:
determining a precoding matrix of the uplink control channel according to the signaling information;
in one implementation, the signaling information satisfies one of the following characteristics:
the signaling information comprises a precoding matrix corresponding to an uplink control channel resource;
the signaling information comprises a precoding matrix corresponding to an uplink control channel resource group, wherein the precoding matrix of each uplink control channel resource in the uplink control channel resource group is the same.
In one implementation, a precoding matrix is used to map layer data of the uplink control channel to transmit antenna ports.
In one implementation, the number of layers of the uplink control channel is greater than 1.
As shown in fig. 5, this embodiment further provides a method for receiving an uplink data channel, which is based on a base station and includes:
s510, receiving the uplink data channel sent by the terminal according to the parameters of the uplink data channel, wherein the parameters of the uplink data channel are set to be determined according to downlink elements.
As shown in fig. 6, this embodiment further provides a method for sending an uplink data channel, where based on a base station, the method includes:
s610, receiving an uplink data channel from a transmitting antenna port;
the antenna ports correspond to a precoding matrix of an uplink data channel, and the antenna ports include demodulation reference signal ports of the uplink data channel.
As shown in fig. 7, this embodiment further provides a method for sending an uplink data channel, where based on a base station, the method includes:
s710, sending first signaling information, wherein the first signaling information comprises a first reference signal resource set;
s720, sending and receiving second signaling information, and indicating the terminal to determine a second reference signal resource set according to the second signaling information;
s730, receiving an uplink data channel through a transmitting beam; wherein the transmission beam is determined according to a third set of reference signal resources, reference signal resources in the third set of reference signal resources belonging to the second set of reference signal resources.
As shown in fig. 8, this embodiment further provides a method for sending an uplink control channel, where based on a base station, the method includes:
s810, signaling information for indicating the terminal to determine the precoding matrix of the uplink control channel is sent.
The present application provides the following implementation:
example 1
In this embodiment, the terminal determines the parameters of the uplink data channel according to the downlink elements; sending the uplink data channel by adopting the determined parameters; the downlink element includes at least one of: downlink channel, downlink reference signal resource, and CORESET group.
Establishing a corresponding relation between downlink measurement reference signal resource elements and parameters; or establishing a corresponding relation between the codepoint and the parameters of the beam indication domain; or establishing a corresponding relation between the downlink element and the first information and the parameter, wherein the first information comprises one of the following: the method comprises the steps of sending an antenna port, sending an antenna port group, an uplink panel number, an uplink measurement reference signal resource and an uplink measurement reference signal resource group; or establishing the corresponding relation between the downlink reference signal resources and the sending antenna port group and the parameters; or establishing a corresponding relation between the CORESET groups and the parameters, wherein the control channel resource group is the CORESET group corresponding to the downlink reference signal resource or the CORESET group where the control channel scheduling the uplink data channel is located.
The parameter includes at least one of: the antenna array antenna comprises a spatial transmitting filter, a precoding matrix, power parameters, demodulation reference signal port information, transmitting antenna ports, a transmitting antenna port group, the number of the transmitting antenna ports and a panel number, wherein the power parameters comprise at least one of the following parameters: target received power p0Path loss reference signal, path compensation factor alpha, and the power parameter is the power parameter of the uplink data channel.
In this embodiment, an antenna port after uplink data channel PUSCH precoding is a demodulation reference signal port of the PUSCH. Specifically, the terminal performs layer-to-port mapping based on the following formula;
Figure BDA0002623947180000071
or precoding based on the following formula:
Figure BDA0002623947180000072
wherein [ p ]0，p1，...，pv-1]Is a port number of DMRS (Demodulation Reference Signal) of the uplink PUSCH, such as [ p ]0，p1，...，pv-1]Belong to [0, 1.. 7.. 11. ], 11]After precoding, the terminal pair
Figure BDA0002623947180000073
Multiplying the power, and mapping to Physical Resource Block (PRB) ResourceAt the antenna port [ p ]0，p1，...，pv-1]And sending the PUSCH to the base station. Wherein xj(i) Is the jth layer data of PUSCH.
Alternatively, in formula (2), W is an identity matrix.
Example 2
In this embodiment, a precoding matrix W used for PUSCH precoding, that is, W in formula (2), is determined according to a reference signal type indicated by a beam information indication field in the PUSCH and/or a number of spatial relationship reference signal resources corresponding to one DMRS port of the PUSCH. The types of the reference signals comprise uplink reference signals and downlink reference signals. And the transmission space precoder (or referred to as a transmission space filter) of the PUSCH is obtained according to the reference signal indicated by the beam indication domain. And when the beam indication domain indicates that the uplink measurement reference signal resource indicates an SRI and the SRS resource belongs to a codebook SRS set, the W is obtained according to the TPMI indicated in the DCI. For example, when the beam indication field indicates that the uplink measurement reference signal resource indicates an SRI, and the SRS resource belongs to a non-codebook SRS set, and one DMRS port corresponds to one spatial relationship reference signal resource on one RE, W is an identity matrix. When the beam indication field indicates that the uplink reference signal is SRS for non codebook and one DMRS port corresponds to multiple spatial relationship reference signal resources on one RE, the number of rows of the PUSCH precoding matrix W is greater than the number of columns, and when the beam indication field indicates the downlink reference signal, the PUSCH precoding matrix W is an identity matrix, for example, including that W is a lower triangular matrix, and only one element value on each row of W is 1, further, the ith column of W is
Figure BDA0002623947180000081
Element to element
Figure BDA0002623947180000082
The element is 1, and the other elements are 0, wherein BiIs the number of spatial relationship reference signal resources corresponding to the ith DMRS port (i.e., indicated for the ith DMRS port in the beam information)Number of reference signal resources); when the beam indication field indicates an indication of a downlink sounding reference signal resource, W is an identity matrix, or the number of transmit antenna ports of a base station and a terminal for a predetermined uplink data channel, W is obtained according to the downlink sounding reference signal resource and the number of the uplink transmit antenna ports, for example, the terminal obtains an H matrix based on the downlink sounding reference signal resource, H is an R x T-dimensional matrix, where R is the number of receive antennas of the terminal, T is the number of ports included in the downlink sounding reference signal resource, and the terminal provides an H x H correlation matrix for the terminalHSVD decomposition H x HHUDV', the eigenvector corresponding to the largest eigenvalue after SVD of this correlation matrix is W ═ V (: 1: L) as described above, where L is the number of layers of PUSCH. In short, W is obtained from the downlink sounding reference signal resources and the number of uplink transmit antenna ports. Or W is obtained according to the downlink measurement reference signal resource.
The number of the transmitting antenna ports of the uplink data channel may be configured in one of the following levels (that is, there is a correspondence between the number of the transmitting antenna ports and at least one of the following information): the number of the sending antenna ports of the UE-Specific, the serving cell-Specific, the BWP-Specific, the PUSCH-Configure-Specific, the TCI state-Specific, the code point of the beam indicator field, the sending beam reference signal resource-Specific, the serving cell group-Specific, the CORESET port-Specific, the pan-Specific, further not the uplink data channel may also be determined according to the capability information reported by the terminal.
Certainly, the codepoint of a beam indication field may also include SRI and SSBI/CRI, where the PUSCH portion corresponding to the SRI obtains W according to the SRI, and the SSBI/CRI portion corresponding to the SSBI/CRI obtains W according to the SSBI/CRI.
Herein, the beam indication field may be an SRI indication field in DCI, or a spatial relationship reference signal resource indication field, or an ri (resource indicator), or an indication field called other name, and the beam indication field indicates at least one of the following information: SRI, SSBI, CRI (CSI-RS resource indicator). Or the beam indication domain indicates a TCI state, and the TCI state includes at least one of the following information: one of SRI, SSBI and CRI
In this embodiment, the terminal obtains a transmission beam of an uplink data channel according to the downlink reference resource, and obtains at least one of the following uplink data channel according to the downlink reference signal resource: antenna port/antenna port group/panel number.
Specifically, the parameters of the uplink data channel are obtained according to a CORESET corresponding to the downlink reference signal resource and a corresponding relationship between the CORESET and the parameters of the uplink data channel.
Obtaining panel information according to the downlink reference signal resources;
the control channel resource group is a control channel resource group in which a control channel for scheduling the uplink data channel is located.
Example 3
In this embodiment, the port number after PUSCH precoding, i.e., [ p ] in equation (1) or (2), is determined according to the reference signal type indicated by the beam information indication field in the PUSCH0，p1，...，pv-1]Wherein the types of the reference signals comprise uplink reference signals and downlink reference signals.
Specifically, when the beam indication field of the PUSCH indicates SRI, the antenna port number after PUSCH precoding is an SRS port number corresponding to an SRS resource, and when the beam indication field of the PUSCH indicates a downlink reference signal resource, the antenna port number after PUSCH precoding is a DMRS port number of the PUSCH. Preferably the precoding matrix of the layer to antenna ports at this time is an identity matrix. Or when the beam indication domain of the PUSCH indicates that the beam indication domain of the PUSCH indicates the downlink reference signal resource, the antenna port number after the PUSCH precoding is the antenna port number of the PUSCH, wherein the antenna port number of the PUSCH is determined according to the number of the antenna ports of the PUSCH and is not obtained according to the SRS resource. I.e. the antenna port number of the PUSCH and any SRS resources are not relevant at this time. The terminal does not need to transmit SRS resources before transmitting PUSCH. The number of transmit antenna ports of the PUSCH may be configured in one of the following levels: UE-Specific, serving cell-Specific, BWP-Specific, PUSCH-Specific, TCI state-Specific, code point of beam indicator field, further without uplink transmitting antenna number can also be determined according to the capability information reported by the terminal.
Specifically, the base station indicates the beam information of the PUSCH in the beam indication domain through the DCI, and the terminal obtains the spatial transmission filter information for transmitting the PUSCH according to the beam information, where the beam information indicates downlink reference signal information or uplink reference signal information. When indicated as SRI (SRS resource indicator), the [ p ]0，p1，...，pv-1]The number of antenna ports in the SRS resource corresponding to the SRI, that is, the SRS antenna port number, for example, when the SRS resource belongs to SRS set for codebook, the SRS antenna port number is 1000+ i, where i is a port number index in the SRS resource, for example, if one SRS resource includes 4 SRS ports, the port numbers of the four SRS ports are {1000,1001,1002,1003 }. When the SRS resource belongs to the SRS set for non-codebook, the antenna port number of the SRS is 1000+ i, where i is an index of the SRS resource in the SRS resource set, for example, one SRS resource set includes 2 SRS resources, each SRS resource includes one SRS port, and the SRS port numbers in the 2 SRS resources are sequentially {1000,1001 }. In the case of CRI/SSBI, the [ p ]0，p1，...，pv-1]DMRS port number for PUSCH, e.g. [ p ]0，p1，...，pv-1]Belonging to the uplink DMRS port number. Or in the case of CRI/SSBI, the number of the transmission antenna port is PUSCH, wherein the number of the transmission antenna port is obtained according to the number of the transmission antenna ports of PUSCH, such as [ p ]0，p1，...，pv-1]Is 3000,30001,3002,30003 or other number.
Example 4
In this embodiment, a precoding matrix TPMI is sent to a PUCCH resource indicator, specifically, the spatial relationship information of the PUCCH resource includes one SRS resource, the SRS resource includes more than 1 SRS port, and the TPMI indicates a TPMI used by the PUCCH resource, where the TPMI indicates a matrix of T × L, where T is the number of ports of the SRS resource, and L is the number of layers of the PUCCH resource, for example, L is equal to 1.
Example 5
In this embodiment, the MAC-CE activates or updates a spatial relationship reference signal resource set, for example, the spatial relationship reference signal resource set is one of the following: SRS set for codebook, SRS set for non codebook, RS set for non codebook. When the spatial relationship reference signal resource set is an RS set for non codebook, the set may include a downlink reference signal resource or an uplink reference signal set. For example, the MAC-CE includes reference signal resource index information in the spatial relationship reference signal resource set. When the spatial relationship reference signal set includes an SRS set for non-codebook, the MAC-CE may further include reference signal resource index information of an accoiated _ CSI-RS of the SRS set for non-codebook, where a spatial transmit filter of SRS resources in the SRS set for non-codebook is obtained according to the accoiated _ CSI-RS.
In an embodiment, when a MAC-CE activates or updates a spatial relationship reference signal resource set, and the spatial relationship reference signal resource set includes a downlink reference signal resource, the MAC-CE includes at least one of the following information of the downlink reference signal resource: serving cell index information, BWP index.
Example 6
In the embodiment, a corresponding relationship between the CORESET groups and the measurement reference signal resource sets corresponding to the uplink data channels is established, for example, each CORESET group corresponds to one SRS resource set, an SRS resource subset is selected in the SRS resource sets by scheduling a PDCCH of the uplink data channel, for example, the SRS resource subset is selected in the SRS resource sets by an SRI domain in the DCI, and a transmission beam of the PUSCH is determined according to the selected SRS resource subset, wherein the transmission beam comprises at least one of a PUSCH, a precoding matrix, a spatial transmission filter and a transmission antenna port after precoding.
The purpose of the measurement reference signal resource set corresponding to each CORESET group may be configured separately, for example, the purpose of the SRS resource set corresponding to the CORESET group 0 is non codebook, and for example, the purpose of the SRS resource set corresponding to the CORESET group 1 is codebook.
Or the SRS resource sets corresponding to the two CORESET groups are the same, except that the respective uses of the SRS resources corresponding to each CORESET group are different, the SRS resource set corresponding to the CORESET group 0 is used as non codebook, for example, the SRS resource set corresponding to the CORESET group 1 is used as codebook.
The present embodiment provides a terminal, as shown in fig. 9, the terminal 900 includes a processor 901 and a memory 902, where the processor 901 is configured to implement the method for transmitting an uplink data channel according to the embodiment. Such as by processor 901 executing one or more programs stored on memory 902 to implement the method for transmitting the uplink data channel provided by the embodiments.
The present embodiment provides a base station, as shown in fig. 10, the base station 1000 includes a processor 1001 and a memory 1002, where the processor 1001 is configured to implement the method for transmitting an uplink data channel according to the embodiment. Such as by processor 1001 executing one or more programs stored on memory 1002 to implement the method for transmitting an upstream data channel provided by the embodiments.
The present embodiment provides a storage medium for a computer-readable storage, where the storage medium stores one or more programs, and the one or more programs are executable by one or more processors to implement the method for transmitting an uplink data channel provided by the embodiment.
One of ordinary skill in the art will appreciate that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof.
In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and are not to be construed as limiting the scope of the invention. Any modifications, equivalents and improvements which may occur to those skilled in the art without departing from the scope and spirit of the present invention are intended to be within the scope of the claims.

Claims (32)

1. A method for transmitting an uplink data channel is characterized in that the method is based on a terminal and comprises the following steps:
determining parameters of an uplink data channel according to the downlink elements;
and sending the uplink data channel according to the parameters of the uplink data channel.
2. The method of claim 1, wherein the parameters of the uplink data channel comprise a precoding matrix;
wherein the precoding matrix satisfies one of the following characteristics:
the precoding matrix is an identity matrix;
the number of rows corresponding to the precoding matrix is the number of transmitting antenna ports of the uplink data channel;
and the rows of the precoding matrix correspond to demodulation reference signal ports of an uplink data channel.
3. The method of claim 1, wherein the parameters of the uplink data channel comprise a transmission antenna port after precoding, and the transmission antenna port satisfies at least one of the following characteristics:
the transmitting antenna port comprises a demodulation reference signal port of the uplink data channel;
and the transmitting antenna ports are obtained according to the number of the transmitting antenna ports of the uplink data channel.
4. The method according to claim 2 or 3, wherein the number of the transmit antenna ports at least comprises one of the following characteristics:
the number of the transmitting antenna ports and the downlink elements have a corresponding relation;
a corresponding relation exists between the number of the transmitting antenna ports and beam indication information, wherein the beam indication information comprises indication information of the downlink elements;
the number of the transmitting antenna ports and the part bandwidth BWP have a corresponding relation;
the number of the transmitting antenna ports and the configuration information PUSCH-configuration of the uplink data channel have a corresponding relation;
the number of the transmitting antenna ports and the service cell have a corresponding relation;
the number of the transmitting antenna ports and the service cell group have a corresponding relation;
the number of the transmitting antenna ports and the control channel resource group have a corresponding relation;
a corresponding relation exists between the number of the transmitting antenna ports and a first communication node, wherein the first communication node is a communication node for transmitting the uplink data channel;
and the number of the transmitting antenna ports is related to the capability information reported by the first communication node.
5. The method of claim 4, wherein there is a correspondence between the number of transmit antenna ports and the set of control channel resources, and the correspondence comprises at least one of:
the control channel resource group is a control channel resource group corresponding to the preset downlink element;
the control channel resource group is a control channel resource group in which a control channel for scheduling the uplink data channel is located.
6. The method of claim 1, wherein the parameter is at least one of:
a corresponding relation exists between the parameters and the downlink elements;
a corresponding relationship exists between the parameter and first information, wherein the first information includes the downlink element and at least one of the following information: the method comprises the steps of sending an antenna port, sending an antenna port group, an uplink sending panel number, an uplink measurement reference signal resource and an uplink measurement reference signal resource group;
a corresponding relation exists between the parameter and a codepoint of a beam indication domain, wherein the beam indication domain comprises an uplink reference signal resource or the downlink element;
and a corresponding relation exists between the parameters and the CORESET group, wherein the CORESET group is a CORESET group corresponding to the downlink element, and the downlink element comprises downlink reference signal resources.
7. The method according to any one of claims 1-3 and 6, wherein the parameter comprises at least one of: the usage of the spatial transmission filter, the precoding matrix, the power parameter, the demodulation reference signal port information, the transmission antenna port, the number of the transmission antenna ports, the transmission antenna port group, the uplink transmission panel number and the measurement reference signal resource set corresponding to the uplink data channel.
8. The method of claim 1, wherein the downlink element comprises at least one of: downlink channel, downlink reference signal resource, and CORESET group.
9. The method of claim 8, the CORESET group satisfying one of the following characteristics:
the CORESET group comprises a control channel for scheduling the downlink element;
the CORESET group includes a control channel that schedules the uplink data channel.
10. The method according to any of claims 1-9, the downlink element comprising the downlink reference signal resource;
the transmitting wave beam of the uplink data channel is obtained according to the downlink reference signal resource;
wherein the beam information comprises one of: transmitting a spatial filter, precoding matrix.
11. A method for transmitting an uplink data channel is characterized in that the method is based on a terminal and comprises the following steps:
determining a precoding matrix of an uplink data channel;
determining a sending antenna port corresponding to the precoding matrix;
mapping the layer data of the uplink data channel to the transmitting antenna port through the precoding matrix;
transmitting the uplink data channel on the antenna port;
wherein the transmit antenna port comprises a demodulation reference signal port of the uplink data channel.
12. The method of claim 11, wherein the precoding matrix comprises at least one of the following characteristics:
the precoding matrix is an identity matrix;
the precoding matrix is obtained according to downlink reference signal resources.
13. The method according to any one of claims 11-12, wherein:
the transmitting wave beam of the uplink data channel is obtained according to the downlink reference signal resource;
wherein the transmit beam includes at least one of a spatial transmit filter and a precoding matrix.
14. A method for transmitting an uplink data channel is characterized in that the method is based on a terminal and comprises the following steps:
receiving first signaling information, wherein the first signaling information comprises a first reference signal resource set;
receiving second signaling information, and determining a second reference signal resource set according to the second signaling information;
determining a third set of reference signal resources, wherein reference signal resources in the third set of reference signal resources belong to the second set of reference signal resources;
determining a transmission beam of an uplink data channel according to the third reference signal resource set;
and sending the uplink data channel by adopting the determined sending beam.
15. The method of claim 14, wherein the second signaling information comprises at least one of:
a second reference signal resource index included in the second set of reference signal resources, wherein a reference signal resource in the second set of reference signal resources belongs to the first set of reference signal resources;
a downlink reference signal resource index corresponding to the second reference signal resource set, wherein a transmission beam of a reference signal resource in the second reference signal resource set is obtained according to the downlink reference signal resource;
a first reference signal resource set index, where the second reference signal resource set is a first reference signal resource set corresponding to the first reference signal resource set index, and the first signaling information includes at least one first reference signal resource set.
16. The method according to claim 14 or 15, wherein the second set of reference signal resources and/or the third set of reference signal resources comprises at least one of:
an uplink measurement reference signal resource set;
the uplink measurement reference signal resource set is used as a non-codebook;
the uplink measurement reference signal resource set is used as a codebook;
and scheduling the reference signal resource set corresponding to the beam indication domain in the DCI of the uplink data channel.
17. The method according to claim 14 or 15, characterized in that:
the first signaling information comprises RRC signaling information;
the second signaling information includes MAC-CE signaling information.
18. The method according to claim 14 or 15, wherein before said determining the transmission beam of the uplink data channel according to the third set of reference signal resources, further comprising:
receiving third signaling information, wherein the third signaling information includes a third reference signal resource set, and wherein the third signaling information includes DCI signaling information.
19. The method according to claim 14 or 15, characterized in that:
the transmit beam includes at least one of a spatial transmit filter and a precoding matrix.
20. A method for transmitting an uplink control channel is characterized in that the method is based on a terminal and comprises the following steps:
and determining a precoding matrix of the uplink control channel.
21. The method of claim 20, wherein the determining the precoding matrix of the uplink control channel is determined if one of the following conditions is satisfied,
the number of ports included in the transmission beam reference signal resource corresponding to the uplink control channel is more than 1;
the number of the transmitting antennas of the uplink control channel is more than 1.
22. The method of claim 20, wherein the determining the precoding matrix of the uplink control channel comprises:
and determining a precoding matrix of the uplink control channel according to the signaling information.
23. The method of claim 22, wherein the signaling information satisfies one of the following characteristics:
the signaling information comprises a precoding matrix corresponding to an uplink control channel resource;
the signaling information comprises a precoding matrix corresponding to an uplink control channel resource group, wherein the precoding matrix of each uplink control channel resource in the uplink control channel resource group is the same.
24. The method according to any one of claims 20-23, wherein:
and mapping the layer data of the uplink control channel to a sending antenna port by adopting the precoding matrix.
25. The method according to any one of claims 20-23, wherein:
the number of layers of the uplink control channel is more than 1.
26. A method for receiving an uplink data channel, based on a base station, comprising:
and receiving the uplink data channel sent by the terminal according to the parameters of the uplink data channel, wherein the parameters of the uplink data channel are set to be determined according to the downlink elements.
27. A method for transmitting an uplink data channel is characterized in that the method is based on a base station and comprises the following steps:
receiving an uplink data channel from a transmitting antenna port;
the antenna ports correspond to a precoding matrix of an uplink data channel, and the antenna ports include demodulation reference signal ports of the uplink data channel.
28. A method for transmitting an uplink data channel is characterized in that the method is based on a base station and comprises the following steps:
sending first signaling information, wherein the first signaling information comprises a first reference signal resource set;
sending and receiving second signaling information, and indicating the terminal to determine a second reference signal resource set according to the second signaling information;
receiving an uplink data channel through a transmit beam; wherein the transmission beam is determined according to a third set of reference signal resources, reference signal resources in the third set of reference signal resources belonging to the second set of reference signal resources.
29. A method for transmitting an uplink control channel is characterized in that the method is based on a base station and comprises the following steps:
and sending signaling information for indicating the terminal to determine a precoding matrix of the uplink control channel.
30. A terminal, characterized in that the terminal comprises a processor for implementing the method for transmitting the uplink data channel according to any one of claims 1 to 25.
31. A base station, characterized in that the base station comprises a processor for implementing the method for transmitting the uplink data channel according to any one of claims 26 to 29.
32. A storage medium for computer-readable storage, wherein the storage medium stores one or more programs, the one or more programs being executable by one or more processors to implement the method for transmitting an uplink data channel according to any one of claims 1 to 29.
CN202010791622.6A 2020-08-07 2020-08-07 Method, terminal, base station and storage medium for transmitting uplink data channel Pending CN111934732A (en)

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