CN109565855B - Uplink transmission method, terminal device and network device - Google Patents

Abstract

The embodiment of the application provides an uplink transmission method, terminal equipment and network equipment, which can flexibly adjust transmission parameters for uplink transmission according to the number of ports, and the method comprises the following steps: terminal equipment determines the number of target ports, wherein the number of the target ports is the number of ports for data transmission or the number of ports of Sounding Reference Signal (SRS) resources related to the data transmission; determining the bit number of an SRS Resource Indication (SRI) in Downlink Control Information (DCI) for scheduling the data transmission or the bit number of a Transmission Antenna Indication (TAI) according to the target port number; acquiring the SRI from the DCI according to the bit number of the SRI, or acquiring the TAI from the DCI according to the bit number of the TAI; determining corresponding SRS resources according to the SRI, or determining corresponding transmitting antennas according to the TAI; determining transmission parameters for the data transmission according to the SRS resources or the transmitting antennas. And performing the data transmission by using the determined transmission parameters.

Description

Uplink transmission method, terminal device and network device

technical field

The present application relates to the field of communications, and more particularly, to an uplink transmission method, terminal device and network device.

Background technique

In the 5G system, the terminal device can use a single antenna port or multiple antenna ports for uplink transmission. Different numbers of antenna ports have different overhead requirements for Downlink Control Information (DCI), and the terminal device can send multiple probe references. Signal (Sounding Reference Signal, SRS) resource, different SRS resources use different transmission beams, the network device can determine the SRS resource with the best received signal quality, and the DCI for scheduling data transmission includes SRS Resource Indication (SRS Resource Indication, SRI, SRI) ) information indicating the SRS resource with the best reception quality, so that the terminal device can determine the corresponding transmit beam according to the SRS resource indicated by the SRI, so that the transmit beam can be determined as the transmit beam used for the data transmission, but For different numbers of antenna ports, the required number of transmit beams is different.

When the terminal device only supports a single antenna port, the terminal device can switch among multiple antennas, and the transmission antenna indication TAI (Transmit Antenna Indication, TAI) in the DCI can be used by the network device to indicate to the terminal device to use Which antenna is used for uplink transmission.

Therefore, different numbers of antenna ports are used for uplink transmission, and the requirements for transmission parameters are different. Therefore, for terminal equipment, how to flexibly adjust transmission parameters according to the number of antenna ports is an urgent problem to be solved.

SUMMARY OF THE INVENTION

The embodiments of the present application provide an uplink transmission method, a terminal device, and a network device, which can flexibly adjust transmission parameters according to the number of antenna ports.

A first aspect provides a method for uplink transmission, comprising: a terminal device determining a target port number, where the target port number is the number of ports used for data transmission or the ports of sounding reference signal SRS resources associated with the data transmission according to the target port number, determine the SRS resource in the downlink control information DCI for scheduling the data transmission to indicate the number of bits of SRI, or the number of bits of the transmission antenna to indicate TAI; Obtain the SRI from the SRI, or obtain the TAI from the DCI according to the number of bits of the TAI; determine the corresponding SRS resource according to the SRI, or determine the corresponding transmission antenna according to the TAI; according to the SRS resource or the transmission antenna The antenna determines transmission parameters for the data transmission. The data transmission is performed using the determined transmission parameters.

With reference to the first aspect, in some implementations of the first aspect, the number of ports used for data transmission includes the number of transmission ports used for the physical uplink shared channel PUSCH or the physical uplink control channel PUCCH.

With reference to the first aspect, in some implementations of the first aspect, the SRS resources associated with the data transmission include SRS resources indicated by the SRI in the DCI that schedules the data transmission.

With reference to the first aspect, in some implementations of the first aspect, the SRS resources associated with the data transmission include SRS resources used to determine transmission parameters of the data transmission, where the transmission parameters include the following At least one:

The number of transmission layers, precoding matrix, modulation and coding methods, and time-frequency physical resources.

With reference to the first aspect, in some implementations of the first aspect, the terminal device determines the number of target ports, including:

The terminal device receives high-level signaling sent by the network device, where the high-level signaling includes the target port number; or,

receiving, by the terminal device, a DCI sent by the network device for scheduling the data transmission, where the DCI includes the target port number;

The terminal device determines the number of target ports according to the higher layer signaling or the DCI.

With reference to the first aspect, in some implementations of the first aspect, according to the target port number, the SRS resource in the downlink control information DCI for scheduling the data transmission indicates the number of bits of the SRI, or the transmission antenna indicates the number of bits. The number of bits of TAI, including:

The number of bits of the SRI is determined according to the number of target ports and the first mapping relationship between the number of ports and the number of SRI bits.

With reference to the first aspect, in some implementation manners of the first aspect, the first mapping relationship is preconfigured by the network device to the terminal device, or agreed in a protocol.

With reference to the first aspect, in some implementations of the first aspect, in the first mapping relationship, a port number of 1 and a port number greater than 1 correspond to different SRI bit numbers, respectively.

With reference to the first aspect, in some implementations of the first aspect, in the first mapping relationship, the first port number corresponds to the first SRI bit number, and the second port number corresponds to the second SRI bit number, if the The first port number is greater than the second port number, and the first SRI bit number is smaller than the second SRI bit number.

With reference to the first aspect, in some implementations of the first aspect, according to the target port number, the SRS resource in the downlink control information DCI for scheduling the data transmission indicates the number of bits of the SRI, or the transmission antenna indicates the number of bits. The number of bits of TAI, including:

The number of bits of the TAI is determined according to the number of target ports and the second mapping relationship between the number of ports and the number of TAI bits.

With reference to the first aspect, in some implementation manners of the first aspect, the second mapping relationship is preconfigured by the network device to the terminal device, or agreed in a protocol.

With reference to the first aspect, in some implementations of the first aspect, in the second mapping relationship, the number of TAI bits corresponding to the number of ports greater than 1 is zero, and the number of TAI bits corresponding to the number of ports equal to 1 is greater than zero.

With reference to the first aspect, in some implementations of the first aspect, the size of the number of TAI bits corresponding to the number of ports equal to 1 is pre-configured by the network device to the terminal device, or determined by the terminal device according to the reported number of antennas.

With reference to the first aspect, in some implementations of the first aspect, the determining the corresponding SRS resource according to the SRI includes:

According to the SRI, the SRS resource corresponding to the SRI is determined from the multiple SRS resources used by the terminal device to send the SRS.

With reference to the first aspect, in some implementations of the first aspect, the determining a corresponding transmit antenna according to the TAI includes:

According to the TAI, the transmitting antenna corresponding to the TAI is determined from the multiple transmitting antennas used by the terminal device to transmit the SRS.

With reference to the first aspect, in some implementations of the first aspect, the determining, according to the SRS resource or the transmitting antenna, the transmission parameter used for the data transmission includes:

determining a transmit beam used for transmitting the SRS on the SRS resource;

A transmit beam used for the data transmission is determined according to the transmit beam.

With reference to the first aspect, in some implementations of the first aspect, the terminal device determines, according to the transmit beam, a transmit beam used for the data transmission, including:

The transmission beam is determined as the transmission beam used for the data transmission.

With reference to the first aspect, in some implementations of the first aspect, the determining, according to the SRS resource or the transmitting antenna, the transmission parameter used for the data transmission includes:

The number of transmission layers used for the data transmission is determined according to the number of ports of the SRS resource and the corresponding relationship between the number of transmission layers in the DCI indicating the RI and the number of transmission layers in the case of the number of ports of the SRS resource.

With reference to the first aspect, in some implementations of the first aspect, the determining, according to the SRS resource or the transmitting antenna, the transmission parameter used for the data transmission includes:

Determine the target codebook for the data transmission according to the port number of the SRS resource and a third mapping relationship, where the third mapping relationship indicates the correspondence between the port number and the codebook;

A precoding matrix for the data transmission is determined in the target codebook according to the precoding matrix indication PMI in the DCI.

With reference to the first aspect, in some implementations of the first aspect, in the third mapping relationship, different port numbers correspond to different codebooks.

With reference to the first aspect, in some implementation manners of the first aspect, the third mapping relationship is preconfigured by the network device to the terminal device, or agreed in a protocol.

With reference to the first aspect, in some implementations of the first aspect, the determining, according to the SRS resource or the transmitting antenna, the transmission parameter used for the data transmission includes:

The transmit antenna is determined as the transmit antenna for the data transmission.

In a second aspect, a method for uplink transmission is provided, including: the network device determines, according to the number of target ports, the number of bits of the sounding reference signal SRS resource indicating the SRI in the downlink control information DCI for scheduling data transmission, or the transmission antenna indicating the number of bits of the TAI. The number of bits, wherein the number of target ports is the number of ports used for the terminal device to perform the data transmission or the number of ports of the SRS resource associated with the data transmission; according to the number of bits of the SRI, or the bits of the TAI number, generate the DCI; send the DCI to the terminal device.

With reference to the second aspect, in some implementations of the second aspect, the number of ports used for data transmission includes the number of transmission ports used for the physical uplink shared channel PUSCH or the physical uplink control channel PUCCH.

With reference to the second aspect, in some implementations of the second aspect, the SRS resources associated with the data transmission include SRS resources indicated by an SRI in the DCI that schedules the data transmission.

With reference to the second aspect, in some implementations of the second aspect, the SRS resources associated with the data transmission include SRS resources used to determine transmission parameters of the data transmission, where the transmission parameters include the following At least one:

The number of transmission layers, precoding matrix, modulation and coding methods, and time-frequency physical resources.

With reference to the second aspect, in some implementations of the second aspect, the network device determines, according to the number of target ports, the number of bits of the sounding reference signal SRS resource indicating the SRI in the downlink control information DCI for scheduling data transmission, or the number of bits of the transmission antenna. Indicates the number of bits of TAI, including:

The number of bits of the SRI is determined according to the number of target ports and the first mapping relationship between the number of ports and the number of SRI bits.

With reference to the second aspect, in some implementations of the second aspect, in the first mapping relationship, a port number of 1 and a port number greater than 1 correspond to different SRI bit numbers, respectively.

In combination with the second aspect, in some implementations of the second aspect, in the first mapping relationship, the first port number corresponds to the first SRI bit number, and the second port number corresponds to the second SRI bit number, if the The first port number is greater than the second port number, and the first SRI bit number is smaller than the second SRI bit number.

With reference to the second aspect, in some implementations of the second aspect, the network device determines, according to the number of target ports, the number of bits of the sounding reference signal SRS resource indicating the SRI in the downlink control information DCI for scheduling data transmission, or the number of bits of the transmission antenna. Indicates the number of bits of TAI, including:

The number of bits of the TAI is determined according to the number of target ports and the second mapping relationship between the number of ports and the number of TAI bits.

With reference to the second aspect, in some implementations of the second aspect, in the second mapping relationship, the number of TAI bits corresponding to the number of ports greater than 1 is zero, and the number of TAI bits corresponding to the number of ports equal to 1 is greater than zero.

In conjunction with the second aspect, in some implementations of the second aspect, the method further includes:

The network device sends high-level signaling to the terminal device, where the high-level signaling includes the target port number; or,

The network device sends a DCI for scheduling the data transmission to the terminal device, where the DCI includes the target port number.

In a third aspect, a terminal device is provided, including a unit for performing the method in the first aspect or various implementations thereof.

In a fourth aspect, a network device is provided, comprising means for performing the method of the second aspect or various implementations thereof.

In a fifth aspect, a terminal device is provided, including a memory, a processor, and a transceiver, the memory is used for storing a program, the processor is used for executing a program, and when the program is executed, the processor is based on the The transceiver performs the method of the first aspect.

In a sixth aspect, a network device is provided, comprising a memory, a processor and a transceiver, the memory is used for storing a program, the processor is used for executing a program, and when the program is executed, the processor is based on the The transceiver performs the method of the second aspect.

In a seventh aspect, a computer-readable medium is provided, the computer-readable medium stores program code for execution by a terminal device, the program code including instructions for executing the method in the first aspect.

In an eighth aspect, a computer-readable medium is provided, the computer-readable medium stores program code for execution by a terminal device, the program code including instructions for executing the method in the second aspect.

Description of drawings

FIG. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application.

FIG. 2 is a schematic flowchart of a method for uplink transmission according to an embodiment of the present application.

FIG. 3 is a schematic flowchart of a method for uplink transmission according to another embodiment of the present application.

FIG. 4 is a schematic block diagram of a terminal device according to an embodiment of the present application.

FIG. 5 is a schematic block diagram of a network device according to an embodiment of the present application.

FIG. 6 is a schematic block diagram of a terminal device according to another embodiment of the present application.

FIG. 7 is a schematic block diagram of a network device according to another embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (referred to as "GSM") system, Code Division Multiple Access (Code Division Multiple Access, referred to as "CDMA") system , Wideband Code Division Multiple Access (WCDMA for short) system, General Packet Radio Service (General Packet RadioService, referred to as "GPRS"), Long Term Evolution (Long Term Evolution, referred to as "LTE") system , LTE Frequency Division Duplex (Frequency Division Duplex, referred to as "FDD") system, LTE Time Division Duplex (Time Division Duplex, referred to as "TDD"), Universal Mobile Telecommunication System (Universal Mobile Telecommunication System, referred to as "UMTS"), Worldwide Interoperability for Microwave Access ("WiMAX" for short) communication system or future 5G system, etc.

FIG. 1 shows a wireless communication system 100 to which an embodiment of the present application is applied. The wireless communication system 100 may include a network device 110 . The network device 100 may be a device that communicates with terminal devices. The network device 100 may provide communication coverage for a specific geographic area, and may communicate with terminal devices (eg, UEs) located within the coverage area. Optionally, the network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (EvolutionalNode B, eNB or eNodeB), or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device can be a relay station, an access point, an in-vehicle device, a wearable device, a future The network side equipment in the 5G network or the network equipment in the public land mobile network (Public Land Mobile Network, PLMN) evolved in the future, etc.

The wireless communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110 . Terminal device 120 may be mobile or stationary. Optionally, the terminal device 120 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, user agent or user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a wireless communication function handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks, or terminal devices in future evolved PLMNs, etc.

Optionally, direct terminal (Device to Device, D2D) communication may be performed between the terminal devices 120 .

Optionally, the 5G system or network may also be referred to as a New Radio (New Radio, NR) system or network.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The application embodiments do not limit this.

FIG. 2 is a schematic flowchart of a method 200 for uplink transmission according to an embodiment of the present application. The method 200 may be executed by a terminal device in the wireless communication system shown in FIG. 1 . As shown in FIG. 2 , the method 200 includes: :

S210, the terminal device determines the number of target ports, where the number of target ports is the number of ports used for data transmission or the number of ports of the sounding reference signal SRS resources associated with the data transmission;

Optionally, in some embodiments, the number of ports used for data transmission includes the number of transmission ports used for a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) or a physical uplink control channel (Physical Uplink Control Channel, PUCCH). .

That is, the terminal device can determine the number of ports for PUSCH or PUCCH.

Optionally, in some embodiments, the SRS resources associated with the data transmission include SRS resources indicated by the SRI in the DCI in which the data transmission is scheduled.

Specifically, before performing data transmission, the terminal device may send multiple SRS resources, and each SRS resource uses one sending beam, that is, the multiple SRS resources use different sending beams, or in other words, the multiple SRS resources and the multiple SRS resources use different sending beams. The transmission beams are in one-to-one correspondence. The network device can determine the SRS resource with the best reception quality according to the reception conditions of the multiple SRS resources, and instruct the network device to determine the best reception quality by scheduling the SRI in the DCI of the uplink transmission. information of the SRS resources, the terminal device can determine the SRS resource with the best reception quality for the network device according to the SRI in the DCI. Since the SRS resource and the transmission beam are in a one-to-one correspondence, The transmission beam corresponding to the SRS resource with the best quality can be determined as the transmission beam used for the data transmission. In this embodiment of the present application, the SRS resource associated with the data transmission may be the SRS resource indicated by the SRI in the DCI scheduling the data transmission, or in other words, the SRS resource associated with the data transmission The SRS resource with the best reception quality determined for the network device.

Optionally, in some embodiments, the SRS resources associated with the data transmission include SRS resources used to determine transmission parameters of the data transmission, and the transmission parameters include at least one of the following:

The number of transmission layers, precoding matrix, modulation and coding methods, and time-frequency physical resources.

In general, the SRS resource associated with the data transmission may be the SRS resource indicated by the SRI in the DCI for scheduling the data transmission, that is, the SRS resource used to determine the sending beam of the data transmission, or may are SRS resources used to determine transmission parameters (or, in other words, scheduling information) of the data transmission.

Optionally, in some embodiments, the terminal device determines the number of target ports, including:

The terminal device receives high-level signaling sent by the network device, and the high-level signaling includes the target port number; or

receiving, by the terminal device, a DCI sent by the network device for scheduling the data transmission, where the DCI includes the target port number;

The terminal device determines the number of target ports according to the higher layer signaling or the DCI.

That is, the network device can configure the target port number for the terminal device through high-layer signaling or DCI that schedules the data transmission.

Optionally, in some embodiments, in scenarios of different numbers of ports, the size of the DCI for scheduling the data transmission is the same. The terminal device may determine the target port number according to the port number indication information (PortNumber Indication, PNI) in the DCI that schedules the data transmission.

S220, according to the target port number, determine that the SRS resource in the downlink control information DCI for scheduling the data transmission indicates the number of bits of the SRI, or the number of bits of the TAI indicated by the transmission antenna;

Specifically, the terminal device may determine the number of bits of the SRI according to the number of target ports. For example, if the number of target ports is 1, that is, the terminal device uses a single antenna port for data transmission. In order to improve the uplink transmission gain , the terminal device can determine more SRI bits, so that the SRI can indicate more SRS resources. Since SRS resources and transmission beams are in one-to-one correspondence, that is, the SRI can indicate more beams, so that the Improves the uplink transmission gain with a single antenna port. For another example, if the number of target ports is greater than 1 or greater than the first number threshold, that is, the terminal device uses multiple antenna ports for data transmission. The effect is not obvious. Therefore, when the number of target ports is greater than 1 or greater than a certain first number threshold, the terminal device may determine that the SRI in the DCI is a smaller number of SRI bits, thereby reducing the DCI overhead.

That is to say, when the number of ports is 1, more SRI bits can be determined, and when the number of ports is greater than 1, a smaller number of SRI bits can be determined; or when the number of ports is less than the first number threshold, more SRI bits can be determined. The number of SRI bits, when the number of ports is greater than the first number threshold, a smaller number of SRI bits is determined; or the number of SRI bits corresponding to each port number can also be determined, that is, the number of ports corresponds to the number of SRI bits one-to-one, and the number of ports corresponds to the number of SRI bits. It is inversely proportional to the number of SRI bits, that is, the more ports there are, the less the number of SRI bits.

Optionally, if in a single-antenna port scenario, that is, when the number of ports is 1, the terminal device determines that there is an SRI of N bits, and in a multi-antenna port scenario, that is, when the number of ports is greater than 1, the terminal device determines. There is an SRI of M bits, where N>M. If the terminal device uses the same size of DCI to schedule data transmission in different port number scenarios, then when the port number is 1, the N-M bits of the SRI are in the port number. When the value is greater than 1, it can be used to indicate other information, for example, to indicate wideband or narrowband precoding matrix indication (Precoding Matrix Indication, PMI) information, so that the DCI overhead in a multi-antenna port scenario can be reduced.

Optionally, the terminal device may also determine the number of bits of the TAI according to the number of target ports. In a single-antenna scenario, the terminal device may switch between multiple transmission antennas, and the TAI is used to indicate the configuration of the network device. the antenna used for the current data transmission. In a multi-antenna scenario, the TAI is not used or is used less often. Therefore, the terminal device can determine the number of bits of the TAI according to the target port number. For example, the terminal device can use the target port number to be 1. , determine that the number of TAI bits is greater than zero, when the number of target ports is greater than 1, determine that the number of TAI bits is zero, or when the number of target ports is less than the second number threshold, determine that the number of TAI bits is greater than zero, greater than the second number threshold , the number of bits of the TAI is determined to be zero.

Optionally, if in a single-antenna port scenario, that is, when the number of ports is 1, the terminal device determines that there are N bits of TAI, and in a multi-antenna port scenario, that is, when the number of ports is greater than 1, the terminal device determines. There is a TAI of zero bits. If the terminal device uses the same size of DCI to schedule data transmission in different port number scenarios, then when the port number is 1, the N bits of the TAI can be used when the port number is greater than 1. Indicate other information, for example, to indicate wideband or wideband PMI information, so that the DCI overhead in the multi-antenna port scenario can be reduced.

Optionally, in some embodiments, according to the target port number, the SRS resource in the downlink control information DCI for scheduling the data transmission indicates the number of bits of SRI, or the number of bits of TAI indicated by the transmission antenna, including: :

The number of bits of the SRI is determined according to the number of target ports and the first mapping relationship between the number of ports and the number of SRI bits.

Specifically, the number of ports and the number of SRI bits may have a first mapping relationship, and the first mapping relationship may be a one-to-one mapping relationship, that is, different numbers of ports correspond to different numbers of SRI bits, for example, the number of ports is 1 , 2, and 4 correspond to SRI bits of 4, 3, and 2 respectively; or a many-to-one mapping relationship. For example, a port number of 1 and a port number greater than 1 correspond to different bit numbers, that is, the port number is greater than 1. Corresponding to the same number of bits, or the number of ports can also be divided into several parts, each part corresponds to the corresponding number of SRI bits, for example, the number of ports is divided into three parts: Each part corresponds to the corresponding number of SRI bits. For example, the number of ports is 1 and the number of SRI bits is 8, the number of ports is 1 to 3, the number of SRI bits is 4, and the number of ports > 3 corresponds to the number of SRI bits. The specific correspondence between the number of ports and the number of SRI bits is limited.

Optionally, in some embodiments, in the first mapping relationship, a port number of 1 and a port number greater than 1 correspond to different SRI bit numbers, respectively.

That is, a single-antenna port scenario and a multi-antenna port scenario can be configured to correspond to different SRI bits respectively.

Optionally, in some embodiments, in the first mapping relationship, the number of first ports corresponds to the number of first SRI bits, and the number of second ports corresponds to the number of second SRI bits. The second port number, the first SRI bit number is less than the second SRI bit number.

That is to say, the greater the number of ports, the less the number of bits. This is because the greater the number of ports, the better the uplink transmission performance. Therefore, it is not necessary to indicate more beams through the SRI to improve the uplink beamforming performance, or in other words, Using more SRI bits to indicate more beams has a limited effect on the improvement of uplink transmission performance, but increases the DCI overhead. On the other hand, the smaller the number of ports, the poorer the uplink transmission performance. Therefore, It is necessary to determine more SRI bits to indicate more beams to improve uplink beamforming performance.

It should be understood that, in this embodiment of the present application, the first mapping relationship may be pre-configured by a network device to the terminal device. For example, the network device may configure the terminal device with the first mapping relationship through high-layer signaling. The mapping relationship, or the first mapping relationship may also be agreed in a protocol.

Optionally, in some embodiments, according to the target port number, the SRS resource in the downlink control information DCI for scheduling the data transmission indicates the number of bits of SRI, or the number of bits of TAI indicated by the transmission antenna, including: :

The number of bits of the TAI is determined according to the number of target ports and the second mapping relationship between the number of ports and the number of TAI bits.

Specifically, the number of ports and the number of TAI bits may have a second mapping relationship, and the second mapping relationship may be a one-to-one mapping relationship, that is, different port numbers correspond to different TAI bits, or may be multiple pairs One mapping relationship, for example, the number of ports is 1 and the number of ports is greater than 1 corresponds to different number of bits, that is, the number of ports greater than 1 corresponds to the same number of bits, or the number of ports can also be divided into several parts, each part corresponds to the corresponding TAI bit number, the embodiment of the present application does not limit the specific correspondence between the number of ports and the number of TAI bits.

Optionally, in some embodiments, in the second mapping relationship, the number of TAI bits corresponding to the number of ports greater than 1 is zero, and the number of TAI bits corresponding to the number of ports equal to 1 is greater than zero.

That is, a single-antenna port scenario and a multi-antenna port scenario can be configured to correspond to different TAI bits. In the single-antenna port scenario, since the TAI is used to indicate the currently used transmission antenna configured by the network device, in the multi-antenna port scenario, The TAI is hardly used. Therefore, when the number of ports is 1, that is, a single-antenna port scenario, the number of TAI bits can be configured to be greater than zero, and the number of ports is greater than 1, that is, a multi-antenna port scenario. The number of TAI bits can be configured to be zero, that is, multiple antennas. Under the port, DCI does not include TAI.

Optionally, as an embodiment, the size of the number of TAI bits corresponding to the number of ports equal to 1 is pre-configured by the network device to the terminal device, or determined by the terminal device according to the reported number of antennas.

For example, the network device may preconfigure the terminal device with the size of the TAI bits corresponding to the number of ports when the number of ports is 1, or the size of the corresponding TAI bits when the number of ports is 1 may also be preconfigured by the terminal device according to the high-level signaling. The number of reported antennas is determined. For example, if the number of antennas reported by the terminal equipment is 4, then the terminal equipment can switch between 4 antennas, and the number of TAI bits can be 2, which is used to indicate the 4 antennas, or if the terminal equipment If the number of antennas reported by the device is 6, the number of TAI bits determined by the terminal device may be 3.

It should be understood that, in this embodiment of the present application, the second mapping relationship may be pre-configured by a network device to the terminal device. For example, the network device may configure the second mapping relationship for the terminal device through high-layer signaling. The mapping relationship, or the second mapping relationship may also be stipulated in the protocol.

S230, obtain the SRI from the DCI according to the number of bits of the SRI, or obtain the TAI from the DCI according to the number of bits of the TAI;

That is, the terminal device can obtain the SRI from the DCI according to the number of bits of the SRI, that is, obtain the information of the SRS resource from the DCI, or obtain the TAI from the DCI according to the number of bits of the TAI, That is, the information of the transmission antenna is obtained from the DCI. Therefore, the uplink transmission method according to the embodiment of the present application only needs to detect the size of one DCI, so that the complexity of blind DCI detection by the terminal device can be reduced.

S240: Determine the corresponding SRS resource according to the SRI, or determine the corresponding transmit antenna according to the TAI.

Optionally, in some embodiments, the determining the corresponding SRS resource according to the SRI includes:

According to the SRI, the SRS resource corresponding to the SRI is determined from the multiple SRS resources used by the terminal device to send the SRS.

Specifically, the terminal device may send SRS on multiple SRS resources to determine transmission parameters for data transmission, such as the number of transmission layers, precoding matrix, modulation and coding method, or time-frequency physical resources and other transmission parameters, or It can also be used to determine the transmit beam used for data transmission. The terminal device may, according to the SRI, determine the SRS resource corresponding to the SRI from the multiple SRS resources used for sending the SRS previously. Optionally, in this embodiment of the present application, the multiple SRS resources may be configured by a network device to the terminal device.

Optionally, each SRS resource may correspond to one transmission beam, that is, different transmission beams are used to transmit SRS on different SRS resources, and the terminal device may use the transmission beam corresponding to the SRS resource as the transmission of the data transmission. beam.

Optionally, in some embodiments, the determining the corresponding transmit antenna according to the TAI includes:

According to the TAI, the transmitting antenna corresponding to the TAI is determined from the multiple transmitting antennas used by the terminal device to transmit the SRS.

Specifically, the terminal device may determine, according to the TAI, a transmit antenna corresponding to the TAI from the multiple transmit antennas previously used to transmit the SRS, and optionally, the terminal device may assign the TAI to the corresponding transmit antenna. The transmitting antenna is used as the transmitting antenna for the data transmission.

S250. Determine a transmission parameter for the data transmission according to the SRS resource or the transmission antenna.

Optionally, in some embodiments, the determining a transmission parameter for the data transmission according to the SRS resource or the transmitting antenna includes:

determining a transmit beam used for transmitting the SRS on the SRS resource;

A transmit beam used for the data transmission is determined according to the transmit beam.

Specifically, the terminal device uses different transmission beams to transmit the SRS on multiple SRS resources, the SRS resource is one SRS resource among the multiple SRS resources, and the terminal device can determine the SRS resource according to the SRS resource The transmission beam used for transmitting the SRS on the resource, so that the transmission beam used for the data transmission can be determined according to the transmission beam. Optionally, the terminal device may determine the transmission beam as the transmission beam used for the data transmission.

Optionally, in some embodiments, the determining a transmission parameter for the data transmission according to the SRS resource or the transmitting antenna includes:

The number of transmission layers used for the data transmission is determined according to the number of ports of the SRS resource and the corresponding relationship between the number of transmission layers in the DCI indicating the RI and the number of transmission layers in the case of the number of ports of the SRS resource.

Specifically, the SRS resource may be used to determine transmission parameters such as the number of transmission layers, a precoding matrix, or a modulation and coding manner for the data transmission. It can be assumed that the number of transmission layers (RankIndicator, RI) in the DCI has a corresponding relationship with the number of transmission layers in the case of different numbers of ports, and the terminal device can combine the number of ports of the SRS resource with the SRS In the case of the number of ports of the resource, the corresponding relationship between the RI and the number of transmission layers determines the number of transmission layers used for data transmission in the case of the number of ports. For example, the number of bits of RI is 3, the state is from 000 to 111, and when the number of ports is 1, the number of transport layers cannot be greater than 1. Therefore, states 000 to 111 can all be used to indicate the number of transport layers; when the number of ports is 4, The number of transport layers cannot exceed 4, so the statuses 000 to 111 can be used to indicate the number of transport layers 1 to 4. For example, 000 and 001 can be set to indicate the number of transport layers 1, 010 and 011 to indicate the number of transport layers 2, and 100 and 101 to indicate the number of transport layers. The number of layers 3, 110 and 111 indicate the number of transmission layers 4. When the terminal device determines that the number of target ports is 4, and the RI obtained in the DCI is 100, the terminal device can determine that the number of transmission layers is 3. It should be understood that this application does not limit the specific correspondence between the RI in the DCI and the number of transport layers in the case of different numbers of ports. For example, when the number of ports is 4, the RI in the DCI and the number of transport layers may also have such a relationship Corresponding relationship, 000 indicates the number of transport layers 1, 001 indicates the number of transport layers 2, 010 indicates the number of transport layers 3, and 011 to 111 all indicate the number of transport layers 4.

Optionally, in some embodiments, the determining a transmission parameter for the data transmission according to the SRS resource or the transmitting antenna includes:

Determine the target codebook for the data transmission according to the port number of the SRS resource and a third mapping relationship, where the third mapping relationship indicates the correspondence between the port number and the codebook;

A precoding matrix for the data transmission is determined in the target codebook according to the precoding matrix indication PMI in the DCI.

Specifically, the SRS resource may be used to determine transmission parameters such as the number of transmission layers, precoding matrix, modulation and coding mode, or time-frequency physical resources for the data transmission. The terminal device may determine the target codebook for the data transmission according to the port number of the SRS resource and the third mapping relationship between the port number and the codebook, and then according to the PMI in the DCI, in the A precoding matrix for the data transmission is determined in the target codebook. Optionally, in the third mapping relationship, different port numbers correspond to different codebooks, that is, port numbers and codebooks are in one-to-one correspondence, and the third mapping relationship may be preconfigured by the network device to The terminal device may also be specified in the protocol, which is not limited in this embodiment of the present application.

S260. Use the determined transmission parameter to perform the data transmission.

Specifically, the terminal device can send SRS on multiple SRS resources, and the terminal device can determine the corresponding SRS resource according to the SRI, so as to determine the sending beam used for sending the SRS on the SRS resource, so that the The terminal device may determine the transmission beam as the transmission beam used for the data transmission, so that the data transmission may be performed using the transmission beam. Alternatively, the terminal device may determine, according to the TAI, a transmit antenna corresponding to the TAI from among multiple transmit antennas used by the terminal device to transmit the SRS, so that the transmit antenna corresponding to the TAI may be determined as the data The transmitting antenna used for transmission, so that the terminal device can use the transmitting antenna corresponding to the TAI to perform the data transmission. Alternatively, the terminal device may also determine transmission parameters for the data transmission, such as the number of transmission layers, precoding matrix, modulation and coding method, or time-frequency physical resources and other transmission parameters, so that the terminal device can use the The transmission parameters carry out the data transmission.

2, the uplink transmission method according to the embodiment of the present application is described in detail from the perspective of the terminal device, and the following describes the uplink transmission method according to the embodiment of the present application from the perspective of the network device in detail with reference to FIG. 3. It should be understood that the description on the side of the network device corresponds to the description on the side of the terminal device, and similar descriptions can be referred to above, which are not repeated here to avoid repetition.

FIG. 3 is a schematic flowchart of a method for uplink transmission according to another embodiment of the present application. As shown in FIG. 3 , the method 300 includes:

S310, the network device determines, according to the number of target ports, the number of bits of the sounding reference signal SRS resource indicating SRI in the downlink control information DCI for scheduling data transmission, or the number of bits of the transmission antenna indicating TAI, wherein the number of target ports is used for The number of ports on which the terminal device performs the data transmission or the number of ports of the SRS resource associated with the data transmission;

Specifically, for the S310, reference may be made to the relevant description of the S220 of the method 200 described in FIG. 2 , which is not repeated here for brevity.

S320, generate the DCI according to the number of bits of the SRI or the number of bits of the TAI;

Specifically, the network device may generate the corresponding DCI according to the number of bits of the SRI or the number of bits of the TAI, and the network device may determine the specific SRS indicated in the SRI according to the actual measured reception quality of the SRS resource resource information, the network device can determine which antenna is indicated in the TAI according to the actual situation.

S330. Send the DCI to the terminal device.

Optionally, in some embodiments, the number of ports used for data transmission includes the number of transmission ports used for the physical uplink shared channel PUSCH or the physical uplink control channel PUCCH.

Optionally, in some embodiments, the SRS resources associated with the data transmission include SRS resources indicated by the SRI in the DCI in which the data transmission is scheduled.

Optionally, in some embodiments, the SRS resources associated with the data transmission include SRS resources used to determine transmission parameters of the data transmission, and the transmission parameters include at least one of the following:

The number of transmission layers, precoding matrix, modulation and coding methods, and time-frequency physical resources.

Optionally, in some embodiments, the network device determines, according to the number of target ports, the number of bits of the sounding reference signal SRS resource in the downlink control information DCI for scheduling data transmission indicating SRI, or the number of bits of the transmission antenna indicating TAI, include:

The number of bits of the SRI is determined according to the number of target ports and the first mapping relationship between the number of ports and the number of SRI bits.

Optionally, in some embodiments, in the first mapping relationship, a port number of 1 and a port number greater than 1 correspond to different SRI bit numbers, respectively.

Optionally, in some embodiments, in the first mapping relationship, the number of first ports corresponds to the number of first SRI bits, and the number of second ports corresponds to the number of second SRI bits. The second port number, the first SRI bit number is less than the second SRI bit number.

Optionally, in some embodiments, the network device determines, according to the number of target ports, the number of bits of the sounding reference signal SRS resource in the downlink control information DCI for scheduling data transmission indicating SRI, or the number of bits of the transmission antenna indicating TAI, include:

The number of bits of the TAI is determined according to the number of target ports and the second mapping relationship between the number of ports and the number of TAI bits.

Optionally, in some embodiments, in the second mapping relationship, the number of TAI bits corresponding to the number of ports greater than 1 is zero, and the number of TAI bits corresponding to the number of ports equal to 1 is greater than zero.

Optionally, in some embodiments, the method further includes:

The network device sends high-level signaling to the terminal device, where the high-level signaling includes the target port number; or,

The network device sends a DCI for scheduling the data transmission to the terminal device, where the DCI includes the target port number.

The method embodiments of the present application are described in detail above with reference to FIGS. 2 to 3 , and the device embodiments of the present application are described in detail below with reference to FIGS. 4 to 7 . It should be understood that the device embodiments and the method embodiments correspond to each other, and are similar to For the description, refer to the method embodiment.

FIG. 4 is a schematic block diagram of a terminal device according to an embodiment of the present application. The terminal device 400 of FIG. 4 includes:

The determining module 410 is configured to determine the number of target ports, and according to the number of target ports, determine the number of bits of the SRS resource indicating the SRI in the downlink control information DCI for scheduling the data transmission, or the number of bits of the transmission antenna indicating the TAI, wherein, The target port number is the port number used for data transmission or the port number of the sounding reference signal SRS resource associated with the data transmission;

an obtaining module 420, configured to obtain the SRI from the DCI according to the number of bits of the SRI, or obtain the TAI from the DCI according to the number of bits of the TAI;

The determining module 410 is further configured to: determine the corresponding SRS resource according to the SRI, or determine the corresponding transmission antenna according to the TAI; determine the transmission parameter used for the data transmission according to the SRS resource or the transmission antenna .

The communication module 430 is configured to use the determined transmission parameter to perform the data transmission.

Optionally, in some embodiments, the number of ports used for data transmission includes the number of transmission ports used for the physical uplink shared channel PUSCH or the physical uplink control channel PUCCH.

Optionally, in some embodiments, the SRS resources associated with the data transmission include SRS resources indicated by the SRI in the DCI in which the data transmission is scheduled.

Optionally, in some embodiments, the SRS resources associated with the data transmission include SRS resources used to determine transmission parameters of the data transmission, and the transmission parameters include at least one of the following:

The number of transmission layers, precoding matrix, modulation and coding methods, and time-frequency physical resources.

Optionally, in some embodiments, the communication module 430 is further configured to:

Receive high-level signaling sent by a network device, where the high-level signaling includes the target port number; or,

receiving a DCI sent by the network device for scheduling the data transmission, where the DCI includes the target port number;

The determining module 410 is specifically used for:

The number of target ports is determined according to the higher layer signaling or the DCI.

Optionally, in some embodiments, the determining module 410 is specifically configured to:

The number of bits of the SRI is determined according to the number of target ports and the first mapping relationship between the number of ports and the number of SRI bits.

Optionally, in some embodiments, the first mapping relationship is preconfigured by the network device to the terminal device, or agreed in a protocol.

Optionally, in some embodiments, in the first mapping relationship, a port number of 1 and a port number greater than 1 correspond to different SRI bit numbers, respectively.

Optionally, in some embodiments, in the first mapping relationship, the number of first ports corresponds to the number of first SRI bits, and the number of second ports corresponds to the number of second SRI bits. The second port number, the first SRI bit number is less than the second SRI bit number.

Optionally, in some embodiments, the determining module 410 is specifically configured to:

The number of bits of the TAI is determined according to the number of target ports and the second mapping relationship between the number of ports and the number of TAI bits.

Optionally, in some embodiments, the second mapping relationship is preconfigured by the network device to the terminal device, or agreed in a protocol.

Optionally, in some embodiments, in the second mapping relationship, the number of TAI bits corresponding to the number of ports greater than 1 is zero, and the number of TAI bits corresponding to the number of ports equal to 1 is greater than zero.

Optionally, in some embodiments, the size of the number of TAI bits corresponding to the number of ports equal to 1 is pre-configured by the network device to the terminal device, or determined by the terminal device according to the reported number of antennas.

Optionally, in some embodiments, the determining module 410 is specifically configured to:

According to the SRI, the SRS resource corresponding to the SRI is determined from the multiple SRS resources used by the terminal device to send the SRS.

Optionally, in some embodiments, the determining module 410 is specifically configured to:

According to the TAI, the transmitting antenna corresponding to the TAI is determined from the multiple transmitting antennas used by the terminal device to transmit the SRS.

Optionally, in some embodiments, the determining module 410 is specifically configured to:

determining a transmit beam used for transmitting the SRS on the SRS resource;

A transmit beam used for the data transmission is determined according to the transmit beam.

Optionally, in some embodiments, the determining module 410 is specifically configured to:

The transmission beam is determined as the transmission beam used for the data transmission.

Optionally, in some embodiments, the determining module 410 is specifically configured to:

The number of transmission layers used for the data transmission is determined according to the number of ports of the SRS resource and the corresponding relationship between the number of transmission layers in the DCI indicating the RI and the number of transmission layers in the case of the number of ports of the SRS resource.

Optionally, in some embodiments, the determining module 410 is specifically configured to:

Determine the target codebook for the data transmission according to the port number of the SRS resource and a third mapping relationship, where the third mapping relationship indicates the correspondence between the port number and the codebook;

A precoding matrix for the data transmission is determined in the target codebook according to the precoding matrix indication PMI in the DCI.

Optionally, in some embodiments, in the third mapping relationship, different port numbers correspond to different codebooks.

Optionally, in some embodiments, the third mapping relationship is preconfigured by the network device to the terminal device, or agreed in a protocol.

Optionally, in some embodiments, the determining module 410 is specifically configured to:

The transmit antenna is determined as the transmit antenna for the data transmission.

FIG. 5 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 500 shown in FIG. 5 includes:

The determining module 510 determines the number of bits of the sounding reference signal SRS resource indicating the SRI in the downlink control information DCI of the scheduling data transmission according to the number of target ports, or the number of bits of the TAI indicated by the transmission antenna, wherein the number of the target ports is used. The number of ports for performing the data transmission in the terminal device or the number of ports of the SRS resource associated with the data transmission;

generating module 520, for generating the DCI according to the number of bits of the SRI, or the number of bits of the TAI;

A communication module 530, configured to send the DCI to the terminal device.

Optionally, in some embodiments, the number of ports used for data transmission includes the number of transmission ports used for the physical uplink shared channel PUSCH or the physical uplink control channel PUCCH.

Optionally, in some embodiments, the SRS resources associated with the data transmission include SRS resources indicated by the SRI in the DCI in which the data transmission is scheduled.

Optionally, in some embodiments, the SRS resources associated with the data transmission include SRS resources used to determine transmission parameters of the data transmission, and the transmission parameters include at least one of the following:

The number of transmission layers, precoding matrix, modulation and coding methods, and time-frequency physical resources.

Optionally, in some embodiments, the determining module 510 is specifically configured to:

The number of bits of the SRI is determined according to the number of target ports and the first mapping relationship between the number of ports and the number of SRI bits.

Optionally, in some embodiments, in the first mapping relationship, a port number of 1 and a port number greater than 1 correspond to different SRI bit numbers, respectively.

Optionally, in some embodiments, in the first mapping relationship, the number of first ports corresponds to the number of first SRI bits, and the number of second ports corresponds to the number of second SRI bits. The second port number, the first SRI bit number is less than the second SRI bit number.

Optionally, in some embodiments, the determining module 510 is specifically configured to:

The number of bits of the TAI is determined according to the number of target ports and the second mapping relationship between the number of ports and the number of TAI bits.

Optionally, in some embodiments, in the second mapping relationship, the number of TAI bits corresponding to the number of ports greater than 1 is zero, and the number of TAI bits corresponding to the number of ports equal to 1 is greater than zero.

Optionally, in some embodiments, the communication module further:

The network device sends high-level signaling to the terminal device, where the high-level signaling includes the target port number; or,

The network device sends a DCI for scheduling the data transmission to the terminal device, where the DCI includes the target port number.

As shown in FIG. 6 , an embodiment of the present application further provides a terminal device 600, where the terminal device 600 may be the terminal device 400 in FIG. content. The terminal device 600 includes: an input interface 610, an output interface 620, a processor 630, and a memory 640. The input interface 610, the output interface 620, the processor 630, and the memory 640 can be connected through a bus system. The memory 640 is used to store programs, instructions or codes. The processor 630 is configured to execute programs, instructions or codes in the memory 640 to control the input interface 610 to receive signals, control the output interface 620 to send signals, and complete the operations in the foregoing method embodiments.

It should be understood that, in this embodiment of the present application, the processor 630 may be a central processing unit (Central Processing Unit, “CPU” for short), and the processor 630 may also be other general-purpose processors, digital signal processors (DSPs) ), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 640 may include read only memory and random access memory, and provides instructions and data to the processor 630 . A portion of memory 640 may also include non-volatile random access memory. For example, memory 640 may also store device type information.

In the implementation process, each content of the above-mentioned method can be completed by an integrated logic circuit of hardware in the processor 630 or an instruction in the form of software. The content of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory 640, and the processor 630 reads the information in the memory 640, and completes the content of the above method in combination with its hardware. To avoid repetition, detailed description is omitted here.

In a specific implementation manner, the determination module 410 and the acquisition module 420 included in the terminal device in FIG. 4 can be implemented by the processor 630 in FIG. 6 , and the communication module 430 included in the terminal device 400 can be implemented using the input interface 610 and the output interface in FIG. 620 realized.

As shown in FIG. 7 , an embodiment of the present application further provides a network device 700, where the network device 700 may be the network device 500 in FIG. content. The network device 700 includes: an input interface 710, an output interface 720, a processor 730, and a memory 740. The input interface 710, the output interface 720, the processor 730, and the memory 740 can be connected through a bus system. The memory 740 is used to store programs, instructions or codes. The processor 730 is configured to execute programs, instructions or codes in the memory 740 to control the input interface 710 to receive signals, control the output interface 720 to send signals and complete the operations in the foregoing method embodiments.

It should be understood that, in this embodiment of the present application, the processor 730 may be a central processing unit (Central Processing Unit, “CPU” for short), and the processor 730 may also be other general-purpose processors, digital signal processors (DSPs) ), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 740 may include read only memory and random access memory, and provides instructions and data to the processor 730 . A portion of memory 740 may also include non-volatile random access memory. For example, memory 740 may also store device type information.

In the implementation process, each content of the above-mentioned method may be completed by an integrated logic circuit of hardware in the processor 730 or an instruction in the form of software. The content of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory 740, and the processor 730 reads the information in the memory 740, and completes the content of the above method in combination with its hardware. To avoid repetition, detailed description is omitted here.

In a specific implementation manner, the determining module 510 and the generating module 520 included in the network device in FIG. 5 can be implemented by the processor 730 in FIG. 7 , and the communication module 530 included in the network device 500 can be implemented using the input interface 710 and the output interface in FIG. 720 realized.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above may refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that make contributions to the prior art or the parts of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, removable hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (46)

1. a method for uplink transmission, characterized in that, comprising: The terminal device determines the number of target ports, where the number of target ports is the number of ports used for data transmission or the number of ports of the sounding reference signal SRS resource associated with the data transmission; According to the target port number, the SRS resource in the downlink control information DCI for scheduling the data transmission indicates the number of bits of the SRI, or the number of bits of the TAI indicated by the transmission antenna; Obtain SRI from the DCI according to the number of bits of the SRI, or obtain the TAI from the DCI according to the number of bits of the TAI; Determine the corresponding SRS resource according to the SRI, or determine the corresponding transmit antenna according to the TAI; determining a transmission parameter for the data transmission according to the SRS resource or the transmit antenna; performing the data transmission using the determined transmission parameters; Wherein, the terminal device determines the number of target ports, including: The terminal device receives high-level signaling sent by the network device, where the high-level signaling includes the target port number; or, receiving, by the terminal device, a DCI sent by the network device for scheduling the data transmission, where the DCI includes the target port number; The terminal device determines the number of target ports according to the higher layer signaling or the DCI. 2 . The method according to claim 1 , wherein the number of ports used for data transmission comprises the number of transmission ports used for a physical uplink shared channel PUSCH or a physical uplink control channel PUCCH. 3 . 3. The method according to claim 1 or 2, wherein the SRS resource associated with the data transmission comprises an SRS resource indicated by an SRI in a DCI in which the data transmission is scheduled. 4. The method according to claim 1 or 2, wherein the SRS resources associated with the data transmission comprise SRS resources for determining transmission parameters of the data transmission, the transmission parameters comprising the following at least one of: The number of transmission layers, precoding matrix, modulation and coding methods, and time-frequency physical resources. 5. The method according to claim 1 or 2, wherein, according to the target port number, the SRS resource in the downlink control information DCI for scheduling the data transmission indicates the number of bits of SRI, or the number of transmission antennas Indicates the number of bits of TAI, including: The number of bits of the SRI is determined according to the number of target ports and the first mapping relationship between the number of ports and the number of SRI bits. 6 . The method according to claim 5 , wherein the first mapping relationship is preconfigured by the network device to the terminal device or agreed in a protocol. 7 . 7 . The method according to claim 5 , wherein, in the first mapping relationship, a port number of 1 and a port number greater than 1 correspond to different SRI bit numbers, respectively. 8 . 8. The method according to claim 5, wherein, in the first mapping relationship, the first port number corresponds to the first SRI bit number, and the second port number corresponds to the second SRI bit number, if the first port number corresponds to the second SRI bit number One port number is greater than the second port number, and the first SRI bit number is smaller than the second SRI bit number. 9. The method according to claim 1 or 2, characterized in that, according to the target port number, the SRS resource in the downlink control information DCI for scheduling the data transmission indicates the number of bits of SRI, or the number of transmission antennas Indicates the number of bits of TAI, including: The number of bits of the TAI is determined according to the number of target ports and the second mapping relationship between the number of ports and the number of TAI bits. 10 . The method according to claim 9 , wherein the second mapping relationship is preconfigured by the network device to the terminal device or agreed in a protocol. 11 . The method according to claim 9, wherein, in the second mapping relationship, the number of TAI bits corresponding to the number of ports greater than 1 is zero, and the number of TAI bits corresponding to the number of ports equal to 1 is greater than zero. 12 . The method according to claim 9 , wherein the size of the number of TAI bits corresponding to the number of ports equal to 1 is preconfigured by the network device to the terminal device, or determined by the terminal device according to the reported number of antennas. 13 . 13. The method according to claim 1 or 2, wherein the determining the corresponding SRS resource according to the SRI comprises: According to the SRI, the SRS resource corresponding to the SRI is determined from the multiple SRS resources used by the terminal device to send the SRS. 14. The method according to claim 1 or 2, wherein the determining the corresponding transmit antenna according to the TAI comprises: According to the TAI, the transmitting antenna corresponding to the TAI is determined from the multiple transmitting antennas used by the terminal device to transmit the SRS. 15. The method according to claim 1 or 2, wherein the determining a transmission parameter for the data transmission according to the SRS resource or the transmit antenna comprises: determining a transmit beam used for transmitting the SRS on the SRS resource; A transmit beam used for the data transmission is determined according to the transmit beam. 16. The method according to claim 15, wherein the terminal device determines, according to the transmission beam, a transmission beam used for the data transmission, comprising: The transmission beam is determined as the transmission beam used for the data transmission. 17. The method according to claim 1 or 2, wherein the determining a transmission parameter for the data transmission according to the SRS resource or the transmit antenna comprises: The number of transmission layers used for the data transmission is determined according to the number of ports of the SRS resource and the corresponding relationship between the number of transmission layers in the DCI indicating the RI and the number of transmission layers. 18. The method according to claim 1 or 2, wherein the determining a transmission parameter for the data transmission according to the SRS resource or the transmit antenna comprises: Determine the target codebook for the data transmission according to the port number of the SRS resource and a third mapping relationship, where the third mapping relationship indicates the correspondence between the port number and the codebook; A precoding matrix for the data transmission is determined in the target codebook according to the precoding matrix indication PMI in the DCI. 19. The method according to claim 1 or 2, wherein the determining a transmission parameter for the data transmission according to the SRS resource or the transmit antenna comprises: The transmit antenna is determined as the transmit antenna for the data transmission. 20. A method for uplink transmission, comprising: The network device determines, according to the number of target ports, the number of bits indicated by the sounding reference signal SRS resource in the downlink control information DCI for scheduling data transmission to indicate SRI, or the number of bits indicated by the transmission antenna to indicate TAI, wherein the number of target ports is used for terminal equipment. The number of ports that carry out the data transmission or the number of ports of the SRS resource associated with the data transmission; Generate the DCI according to the number of bits of the SRI or the number of bits of the TAI; sending the DCI to the terminal device; The method also includes: The network device sends high-level signaling to the terminal device, where the high-level signaling includes the target port number; or, The network device sends a DCI for scheduling the data transmission to the terminal device, where the DCI includes the target port number. The method according to claim 20, wherein the number of ports used for data transmission comprises the number of transmission ports used for a physical uplink shared channel PUSCH or a physical uplink control channel PUCCH. 22. The method according to claim 20 or 21, wherein the SRS resource associated with the data transmission comprises an SRS resource indicated by an SRI in a DCI in which the data transmission is scheduled. 23. The method according to claim 20 or 21, wherein the SRS resource associated with the data transmission comprises an SRS resource for determining a transmission parameter of the data transmission, the transmission parameter comprising the following: at least one of: The number of transmission layers, precoding matrix, modulation and coding methods, and time-frequency physical resources. 24. A terminal device, comprising: The determining module is used to determine the number of target ports, and according to the number of target ports, determine the number of bits of the SRS resource indicating SRI in the downlink control information DCI for scheduling data transmission, or the number of bits of the transmission antenna indicating TAI, wherein the target The number of ports is the number of ports used for data transmission or the number of ports of the sounding reference signal SRS resources associated with the data transmission; an obtaining module, configured to obtain the SRI from the DCI according to the number of bits of the SRI, or obtain the TAI from the DCI according to the number of bits of the TAI; The determining module is further configured to: determine the corresponding SRS resource according to the SRI, or determine the corresponding transmission antenna according to the TAI; determine the transmission parameter used for the data transmission according to the SRS resource or the transmission antenna; a communication module for performing the data transmission using the determined transmission parameter; The communication module is also used for: Receive high-level signaling sent by a network device, where the high-level signaling includes the target port number; or, receiving a DCI sent by the network device for scheduling the data transmission, where the DCI includes the target port number; The determining module is specifically used for: The number of target ports is determined according to the higher layer signaling or the DCI. 25. The terminal device according to claim 24, wherein the number of ports used for data transmission comprises the number of transmission ports used for a physical uplink shared channel PUSCH or a physical uplink control channel PUCCH. 26. The terminal device according to claim 24 or 25, wherein the SRS resource associated with the data transmission comprises an SRS resource indicated by an SRI in a DCI that schedules the data transmission. 27. The terminal device according to claim 24 or 25, wherein the SRS resource associated with the data transmission comprises an SRS resource for determining a transmission parameter of the data transmission, the transmission parameter comprising the following At least one of: The number of transmission layers, precoding matrix, modulation and coding methods, and time-frequency physical resources. 28. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to: The number of bits of the SRI is determined according to the number of target ports and the first mapping relationship between the number of ports and the number of SRI bits. 29 . The terminal device according to claim 28 , wherein the first mapping relationship is preconfigured by the network device to the terminal device or agreed in a protocol. 29 . 30 . The terminal device according to claim 28 , wherein, in the first mapping relationship, the number of ports is 1 and the number of ports is greater than 1, respectively, corresponding to different numbers of SRI bits. 31 . 31. The terminal device according to claim 28, wherein, in the first mapping relationship, the first port number corresponds to the first SRI bit number, and the second port number corresponds to the second SRI bit number, if the The first port number is greater than the second port number, and the first SRI bit number is smaller than the second SRI bit number. 32. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to: The number of bits of the TAI is determined according to the number of target ports and the second mapping relationship between the number of ports and the number of TAI bits. 33 . The terminal device according to claim 32 , wherein the second mapping relationship is preconfigured by the network device to the terminal device or stipulated by a protocol. 34 . The terminal device according to claim 32, wherein, in the second mapping relationship, the number of TAI bits corresponding to the number of ports greater than 1 is zero, and the number of TAI bits corresponding to the number of ports equal to 1 is greater than zero. 35. The terminal device according to claim 32, wherein the size of the number of TAI bits corresponding to the number of ports equal to 1 is preconfigured by the network device to the terminal device, or determined by the terminal device according to the reported number of antennas. 36. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to: According to the SRI, the SRS resource corresponding to the SRI is determined from the multiple SRS resources used by the terminal device to send the SRS. 37. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to: According to the TAI, the transmitting antenna corresponding to the TAI is determined from the multiple transmitting antennas used by the terminal device to transmit the SRS. 38. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to: determining a transmit beam used for transmitting the SRS on the SRS resource; A transmit beam used for the data transmission is determined according to the transmit beam. 39. The terminal device according to claim 38, wherein the determining module is specifically configured to: The transmission beam is determined as the transmission beam used for the data transmission. 40. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to: The number of transmission layers used for the data transmission is determined according to the number of ports of the SRS resource and the corresponding relationship between the number of transmission layers in the DCI indicating the RI and the number of transmission layers. 41. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to: Determine the target codebook for the data transmission according to the port number of the SRS resource and a third mapping relationship, where the third mapping relationship indicates the correspondence between the port number and the codebook; A precoding matrix for the data transmission is determined in the target codebook according to the precoding matrix indication PMI in the DCI. 42. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to: The transmit antenna is determined as the transmit antenna for the data transmission. 43. A network device, comprising: The determination module determines the number of bits of the sounding reference signal SRS resource indicating the SRI in the downlink control information DCI of the scheduling data transmission according to the number of target ports, or the number of bits of the TAI indicated by the transmission antenna, wherein the number of the target ports is used for The number of ports on which the terminal device performs the data transmission or the number of ports of the SRS resource associated with the data transmission; A generating module, configured to generate the DCI according to the number of bits of the SRI or the number of bits of the TAI; a communication module, configured to send the DCI to the terminal device; The communication module is also used for: The network device sends high-level signaling to the terminal device, where the high-level signaling includes the target port number; or, The network device sends a DCI for scheduling the data transmission to the terminal device, where the DCI includes the target port number. 44. The network device according to claim 43, wherein the number of ports used for data transmission comprises the number of transmission ports used for a physical uplink shared channel PUSCH or a physical uplink control channel PUCCH. 45. The network device according to claim 43 or 44, wherein the SRS resource associated with the data transmission comprises an SRS resource indicated by an SRI in a DCI that schedules the data transmission. 46. The network device according to claim 43 or 44, wherein the SRS resources associated with the data transmission comprise SRS resources for determining transmission parameters of the data transmission, the transmission parameters comprising the following At least one of: The number of transmission layers, precoding matrix, modulation and coding methods, and time-frequency physical resources.

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