CN109565855B

CN109565855B - Uplink transmission method, terminal equipment and network equipment

Info

Publication number: CN109565855B
Application number: CN201780048072.5A
Authority: CN
Inventors: 唐海
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-03-20
Filing date: 2017-03-20
Publication date: 2020-12-29
Anticipated expiration: 2037-03-20
Also published as: CN109565855A; WO2018170691A1

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 equipment and network equipment

Technical Field

The present application relates to the field of communications, and in particular, to a method, a terminal device, and a network device for uplink transmission.

Background

In a 5G system, the terminal device may use a single antenna port or multiple antenna ports for uplink transmission, with different numbers of antenna ports, for different overhead requirements of Downlink Control Information (DCI), a terminal device may send multiple Sounding Reference Signal (SRS) resources, different SRS resources use different sending beams, a network device may determine an SRS resource with the best received Signal quality, the DCI of the scheduled data transmission comprises the SRS Resource Indication (SRI) which indicates the SRS Resource with the best receiving quality, so that the terminal equipment can determine the corresponding transmission beam according to the SRS resource indicated by the SRI, the transmission beam may thus be determined as the transmission beam used for the data transmission, but the number of required transmission beams is different for different numbers of antenna ports.

When the terminal device only supports a single Antenna port, the terminal device may switch among multiple antennas, where a transmission Antenna Indication TAI (Transmit Antenna Indication, TAI) in the DCI may be used for the network device to indicate to the terminal device which Antenna to use for uplink transmission.

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

Disclosure of Invention

The embodiment of the application provides an uplink transmission method, terminal equipment and network equipment, which can flexibly adjust transmission parameters according to the number of antenna ports.

In a first aspect, a method for uplink transmission is provided, including: 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.

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

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

With reference to the first aspect, in certain implementations of the first aspect, the SRS resources associated with the data transmission include SRS resources used to determine transmission parameters for the data transmission, the transmission parameters including at least one of:

the system comprises the transmission layer number, a precoding matrix, a modulation coding mode and time-frequency physical resources.

With reference to the first aspect, in some implementation manners of the first aspect, the determining, by the terminal device, a target port number includes:

the terminal equipment receives a high-level signaling sent by network equipment, wherein the high-level signaling comprises the target port number; or,

the terminal equipment receives DCI (downlink control information) which is sent by the network equipment and used for scheduling the data transmission, wherein the DCI comprises the target port number;

and the terminal equipment determines the number of the target ports according to the high-level signaling or the DCI.

With reference to the first aspect, in some implementation manners of the first aspect, the determining, according to the number of target ports, a bit number of an SRS resource indicator SRI or a bit number of a transmission antenna indicator TAI in downlink control information DCI for scheduling the data transmission includes:

and determining the number of bits of the SRI according to the number of the target ports and a first mapping relation between the number of the ports and the number of bits of the SRI.

With reference to the first aspect, in some implementations of the first aspect, the first mapping relationship is pre-configured by the network device to the terminal device, or agreed by a protocol.

With reference to the first aspect, in some implementation manners of the first aspect, in the first mapping relationship, the number of ports is 1, and the number of ports is greater than 1, and the ports respectively correspond to different SRI bit numbers.

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

and determining the bit number of the TAI according to the target port number and a second mapping relation between the port number and the TAI bit number.

With reference to the first aspect, in some implementations of the first aspect, the second mapping relationship is pre-configured by the network device to the terminal device, or agreed by a protocol.

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

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

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

and according to the SRI, determining SRS resources corresponding to the SRI from a plurality of SRS resources adopted by the terminal equipment for sending 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:

and according to the TAI, determining a transmitting antenna corresponding to the TAI from a plurality of transmitting antennas adopted by terminal equipment for transmitting SRS.

With reference to the first aspect, in certain implementations of the first aspect, the determining transmission parameters for the data transmission according to the SRS resources or the transmit antennas includes:

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

and determining a sending beam used for the data transmission according to the sending beam.

With reference to the first aspect, in some implementations of the first aspect, the determining, by the terminal device, a transmission beam used for the data transmission according to the transmission beam includes:

and determining the transmission beam as the transmission beam for the data transmission.

and determining the number of transmission layers for data transmission according to the number of ports of the SRS resource and the corresponding relation between the transmission layer number indication RI and the number of transmission layers in the DCI under the condition of the number of ports of the SRS resource.

determining a target codebook for the data transmission according to the number of ports of the SRS resource and a third mapping relation, wherein the third mapping relation indicates the corresponding relation between the number of ports and the codebook;

and determining a precoding matrix used for the data transmission in the target codebook according to a Precoding Matrix Indicator (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 implementations of the first aspect, the third mapping relationship is pre-configured by the network device to the terminal device, or agreed by a protocol.

determining the transmit antenna as a transmit antenna for the data transmission.

In a second aspect, a method for uplink transmission is provided, including: the network equipment determines the bit number of a Sounding Reference Signal (SRS) resource indication (SRI) or the bit number of a Transmission Antenna Indication (TAI) in Downlink Control Information (DCI) for scheduling data transmission according to the number of target ports, wherein the number of the target ports is the number of ports for terminal equipment to perform data transmission or the number of ports of the SRS resource associated with the data transmission; generating the DCI according to the bit number of the SRI or the bit number of the TAI; and sending the DCI to the terminal equipment.

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

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

With reference to the second aspect, in certain implementations of the second aspect, the SRS resources associated with the data transmission include SRS resources used to determine transmission parameters for the data transmission, the transmission parameters including at least one of:

With reference to the second aspect, in some implementation manners of the second aspect, the determining, by the network device, a bit number of a sounding reference signal, SRS, resource indicator, SRI, or a bit number of a transmission antenna indicator, TAI, in downlink control information, DCI, for scheduling data transmission according to the number of target ports includes:

With reference to the second aspect, in some implementation manners of the second aspect, in the first mapping relationship, the number of ports is 1, and the number of ports is greater than 1, which correspond to different SRI bit numbers respectively.

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

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

With reference to the second aspect, in certain implementations of the second aspect, the method further includes:

the network equipment sends a high-level signaling to the terminal equipment, wherein the high-level signaling comprises the target port number; or,

and the network equipment sends DCI for scheduling the data transmission to the terminal equipment, wherein the DCI comprises the target port number.

In a third aspect, a terminal device is provided that includes means for performing the method of the first aspect or its various implementations.

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

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

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

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

In an eighth aspect, a computer readable medium is provided, which stores program code for execution by a terminal device, the program code comprising instructions for performing the method of the second aspect.

Drawings

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

Fig. 2 is a schematic flow chart of a method of uplink transmission according to an embodiment of the present application.

Fig. 3 is a schematic flow chart of a method of 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 Description

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" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE), a Frequency Division Duplex (FDD) System, a Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System in the future.

Fig. 1 illustrates 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. Network device 100 may be a device that communicates with a terminal device. Network device 100 may provide communication coverage for a particular geographic area and may communicate with terminal devices (e.g., UEs) located within the coverage area. Optionally, the Network device 100 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or a Network device in a relay Station, an Access point, a vehicle-mounted device, a wearable device, a Network-side device in a future 5G Network, or a Network device in a future evolved Public Land Mobile Network (PLMN), or the like.

The wireless communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110. The terminal device 120 may be mobile or stationary. Alternatively, terminal Equipment 120 may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved PLMN, etc.

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

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

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the wireless communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Fig. 2 is a schematic flow chart of a method 200 for uplink transmission according to an embodiment of the present application, where the method 200 may be performed by a terminal device in the wireless communication system shown in fig. 1, and as shown in fig. 2, the method 200 includes:

s210, 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;

optionally, in some embodiments, the number of ports for data transmission includes a number of transmission ports for a Physical Uplink Shared Channel (PUSCH) or a Physical Uplink Control Channel (PUCCH).

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

Optionally, in some embodiments, the SRS resource associated with the data transmission comprises an SRS resource indicated by an SRI in DCI scheduling the data transmission.

Specifically, before data transmission, a terminal device may transmit multiple SRS resources, each SRS resource using one transmission beam, that is, the plurality of SRS resources use different transmission beams, or the plurality of SRS resources and the plurality of transmission beams correspond to each other one by one, the network device may determine the SRS resource with the best reception quality according to the reception condition of the plurality of SRS resources, by scheduling the information that the SRI in the DCI for uplink transmission indicates the SRS resource with the best reception quality determined by the network device, the terminal device may 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 relationship, the terminal device may determine the transmission beam corresponding to the SRS resource with the best reception quality, and thus may determine the transmission beam as the transmission beam used for the data transmission. In this embodiment of the application, the SRS resource associated with the data transmission may be an SRS resource indicated by an SRI in the DCI for scheduling the data transmission, or in other words, the SRS resource associated with the data transmission is an SRS resource determined by a network device and having the best reception quality.

Optionally, in some embodiments, the SRS resources associated with the data transmission comprise SRS resources for determining transmission parameters for the data transmission, the transmission parameters comprising at least one of:

In general, the SRS resource associated with the data transmission may be an SRS resource indicated by an SRI in DCI scheduling the data transmission, that is, an SRS resource used for determining a transmission beam of the data transmission, or an SRS resource used for determining transmission parameters (or scheduling information) of the data transmission.

Optionally, in some embodiments, the determining, by the terminal device, the number of target ports includes:

the terminal equipment receives a high-level signaling sent by network equipment, wherein the high-level signaling comprises the target port number; or

That is, the network device may configure the target port number to the terminal device through higher layer signaling or DCI which schedules the data transmission.

Optionally, in some embodiments, the DCI size of the data transmission is scheduled to be the same in different port number scenarios. The terminal device may determine the target Port Number according to Port Number Indication information (PNI) in the DCI for scheduling the data transmission.

S220, determining the bit number of an SRS Resource Indication (SRI) or the bit number of a Transmission Antenna Indication (TAI) in Downlink Control Information (DCI) for scheduling the data transmission according to the target port number;

specifically, the terminal device may determine the bit number of the SRI according to the number of the target ports, for example, if the number of the target ports is 1, that is, the terminal device performs data transmission using a single antenna port, and in order to improve uplink transmission gain, the terminal device may determine a larger number of SRI bits, so that the SRI may indicate more SRS resources, and since the SRS resources and the transmission beams are in one-to-one correspondence, that is, the SRI may indicate more beams, thereby improving uplink transmission gain at the time of 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, in this case, more beams are indicated by the SRI, and the effect of increasing the uplink transmission gain is not obvious, so that the terminal device may determine that the SRI in the DCI is a smaller number of SRI bits when the number of target ports is greater than 1 or greater than a certain first number threshold, thereby reducing DCI overhead.

That is, when the number of ports is 1, a larger number of SRI bits may be determined, and when the number of ports is greater than 1, a smaller number of SRI bits may be determined; or when the number of ports is smaller than the first number threshold, determining more SRI bit numbers, and when the number of ports is larger than the first number threshold, determining less SRI bit numbers; or it may also be determined that each port number corresponds to a corresponding SRI bit number, that is, the port number corresponds to the SRI bit number one to one, and the port number is inversely proportional to the SRI bit number, that is, the larger the port number is, the smaller the SRI bit number is.

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

Optionally, the terminal device may further determine a bit number of a TAI according to the number of the target ports, and in a single-antenna scenario, the terminal device may switch between multiple transmission antennas, where the TAI is used to indicate an antenna configured by the network device and used for current data transmission. In a multi-antenna scenario, the TAI is not used or is used less frequently, and therefore, the terminal device may determine the bit number of the TAI according to the target port number, for example, the terminal device may determine that the TAI bit number is greater than zero when the target port number is 1, and determine that the TAI bit number is zero when the target port number is greater than 1, or determine that the TAI bit number is greater than zero when the target port number is less than a second number threshold, and determine that the TAI bit number is zero when the target port number is greater than the second number threshold.

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

Optionally, in some embodiments, the determining, according to the number of target ports, a bit number of an SRS resource indicator SRI or a bit number of a transmission antenna indicator TAI in downlink control information DCI for scheduling the data transmission includes:

Specifically, the number of ports and the number of SRI bits may have a first mapping relationship, where 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 SRI bits corresponding to 1, 2, 4 is 4, 3, 2; or may be a many-to-one mapping relationship, for example, the number of ports is 1, and the number of ports is greater than 1 and corresponds to different bit numbers, that is, the number of ports is greater than 1 and corresponds to the same bit number, or the number of ports may be divided into several parts, each part corresponds to a corresponding SRI bit number, for example, the number of ports is divided into three parts, that is, the number of ports is 1 to 3, and the number of ports is greater than 3, each part corresponds to a corresponding SRI bit number, for example, the number of ports is 1 and corresponds to SRI bit number 8, the number of ports is 1 to 3 and corresponds to SRI bit number 4, and the number of ports is greater than 3 and corresponds to SRI bit number 2.

Optionally, in some embodiments, in the first mapping relationship, the number of ports is 1, and the number of ports is greater than 1, which respectively corresponds to different SRI bit numbers.

That is, a single antenna port scenario and a multi-antenna port scenario may be configured, and correspond to different SRI bit numbers respectively.

Optionally, in some embodiments, in the first mapping relationship, the first port number corresponds to a first SRI bit number, the second port number corresponds to a second SRI bit number, and if the first port number is greater than the second port number, the first SRI bit number is smaller than the second SRI bit number.

That is to say, the more the number of ports, the smaller the corresponding number of bits, which is because the more the number of ports, the better the uplink transmission performance, therefore, it is not necessary to indicate more beams through SRI to improve the uplink beamforming performance, or, the more SRI bits indicate more beams, the effect of improving the uplink transmission performance is limited, but DCI overhead is increased, on the other hand, the less the number of ports, the worse the uplink transmission performance is, therefore, the more SRI bits are required to indicate more beams to improve the uplink beamforming performance.

It should be understood that, in the 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 first mapping relationship to the terminal device through high-layer signaling, or the first mapping relationship may also be agreed by a protocol.

Specifically, the number of ports and the number of TAI bits may have a second mapping relationship, where the second mapping relationship may be a one-to-one mapping relationship, that is, different numbers of ports correspond to different numbers of TAI bits, or may also be a many-to-one mapping relationship, for example, the number of ports is 1, and the number of ports is greater than 1, and corresponds to different numbers of bits, that is, the number of ports is greater than 1, and corresponds to the same number of bits, or the number of ports may be divided into several parts, and each part corresponds to a corresponding number of TAI bits.

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

In the single antenna port scenario, the TAI is used to indicate a currently used transmission antenna configured by the network device, and in the multiple antenna port scenario, the TAI is hardly used, so that in the single antenna port scenario, the number of TAI bits is greater than zero, the number of ports is greater than 1, that is, in the multiple antenna port scenario, and the number of TAI bits is equal to zero, that is, in the multiple antenna port scenario, the DCI does not include the TAI.

Optionally, as an embodiment, the size of the TAI bit number corresponding to the port number equal to 1 is configured in advance to the terminal device by the network device, or is determined by the terminal device according to the reported antenna number.

For example, the network device may pre-configure, by a high-level signaling, the size of the TAI bit number corresponding to the port number of 1 to the terminal device, or the size of the TAI bit number corresponding to the port number of 1 may also be determined by the terminal device according to the reported antenna number, for example, if the number of antennas reported by the terminal device is 4, the terminal device may switch between 4 antennas, the TAI bit number may be 2 for indicating the 4 antennas, or if the number of antennas reported by the terminal device is 6, the TAI bit number determined by the terminal device may be 3.

It should be understood that, in the 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 to the terminal device through high-layer signaling, or the second mapping relationship may also be agreed by a protocol.

S230, 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;

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

S240, determining corresponding SRS resources according to the SRI, or determining corresponding transmitting antennas according to the TAI.

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

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

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

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

Specifically, the terminal device may determine, according to the TAI, a transmitting antenna corresponding to the TAI from among a plurality of transmitting antennas used for previously transmitting the SRS, and optionally, the terminal device may use the transmitting antenna corresponding to the TAI as the transmitting antenna for the data transmission.

S250, determining transmission parameters for the data transmission according to the SRS resources or the transmitting antennas.

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

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

Specifically, the terminal device may determine, according to the SRS resource, a transmission beam used for transmitting the SRS on the SRS resource, so as to determine, according to the transmission beam, the transmission beam used for the data transmission. Optionally, the terminal device may determine the transmission beam as a transmission beam used for the data transmission.

Specifically, the SRS resource may be configured to determine transmission parameters such as the number of transmission layers, a precoding matrix, or a modulation and coding scheme for the data transmission. It may be assumed that, under the condition of different port numbers, a corresponding relationship exists between an indication (RI) of the number of transmission layers in the DCI and the number of transmission layers, and the terminal device may determine, according to the number of ports of the SRS resource, the number of transmission layers used for data transmission under the condition of the number of ports in combination with the corresponding relationship between the RI and the number of transmission layers under the condition of the number of ports of the SRS resource. For example, the number of bits of RI is 3, the status is from 000 to 111, and when the number of ports is 1, the number of transmission layers cannot be greater than 1, so the statuses 000 to 111 can all be used to represent the number of transmission layers 1; when the number of ports is 4, the number of transmission layers cannot exceed 4, then the states 000 to 111 may be used to indicate the number of transmission layers 1 to 4, for example, 000 and 001 may be set to indicate the number of transmission layers 1, 010 and 011 indicate the number of transmission layers 2, 100 and 101 indicate the number of transmission layers 3, 110 and 111 indicate the number of transmission layers 4, and when the terminal device determines that the number of target ports is 4, the RI in the DCI is acquired as 100, then the terminal device may determine that the number of transmission layers is 3. It should be understood that, in the present application, without limiting the number of different ports, a specific correspondence relationship between RI in DCI and the number of transmission layers, for example, when the number of ports is 4, RI in DCI and the number of transmission layers may also have a correspondence relationship, 000 indicates the number of transmission layers 1, 001 indicates the number of transmission layers 2, 010 indicates the number of transmission layers 3, and 011 to 111 all indicate the number of transmission layers 4.

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

And S260, using the determined transmission parameters to carry out the data transmission.

Specifically, the terminal device may transmit an SRS on a plurality of SRS resources, and the terminal device may determine, according to the SRI, a corresponding SRS resource, so as to determine a transmission beam used for transmitting the SRS on the SRS resource, so that the terminal device may determine the transmission beam as a transmission beam used for the data transmission, so as to perform the data transmission using the transmission beam. Or the terminal device may determine, according to the TAI, a transmitting antenna corresponding to the TAI from among a plurality of transmitting antennas used for transmitting an SRS from the terminal device, so that the transmitting antenna corresponding to the TAI may be determined as the transmitting antenna used for the data transmission, and thus the terminal device may perform the data transmission using the transmitting antenna corresponding to the TAI. Alternatively, the terminal device may further determine a transmission parameter used for the data transmission, for example, a transmission parameter such as the number of transmission layers, a precoding matrix, a modulation and coding scheme, or a time-frequency physical resource, so that the terminal device may perform the data transmission using the transmission parameter.

The method for uplink transmission according to the embodiment of the present application is described in detail from the perspective of the terminal device in conjunction with fig. 2, and described in detail from the perspective of the network device in conjunction with fig. 3. It should be understood that the description of the network device side and the description of the terminal device side correspond to each other, and similar descriptions may be referred to above, and are not repeated herein to avoid repetition.

Fig. 3 is a schematic flow chart of a method of uplink transmission according to another embodiment of the present application, and as shown in fig. 3, the method 300 includes:

s310, according to a target port number, a network device determines a bit number of a Sounding Reference Signal (SRS) resource indication (SRI) or a bit number of a Transmission Antenna Indication (TAI) in Downlink Control Information (DCI) for scheduling data transmission, wherein the target port number is the port number used for the terminal device to perform the data transmission or the port number of the SRS resource associated with the data transmission;

specifically, the step S310 may refer to the related description of step S220 of the method 200 illustrated in fig. 2, and for brevity, the description is not repeated here.

S320, generating the DCI according to the bit number of the SRI or the bit number of the TAI;

specifically, the network device may generate corresponding DCI according to the bit number of the SRI or the bit number of the TAI, the network device may determine the information of the specific SRS resource indicated in the SRI according to the actually measured condition of the reception quality of the SRS resource, and the network device may determine which antenna is indicated in the TAI according to the actual condition.

S330, the DCI is sent to the terminal equipment.

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

Optionally, in some embodiments, the determining, by the network device, a bit number of a sounding reference signal, SRS, resource indicator, SRI, or a bit number of a transmission antenna indicator, TAI, in downlink control information, DCI, for scheduling data transmission according to the number of target ports includes:

Optionally, in some embodiments, the method further comprises:

While method embodiments of the present application are described in detail above with reference to fig. 2-3, apparatus embodiments of the present application are described in detail below with reference to fig. 4-7, it being understood that apparatus embodiments correspond to method embodiments and that similar descriptions may be had with reference to method embodiments.

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:

a determining module 410, configured to determine a target port number, and determine, according to the target port number, a bit number of an SRS Resource Indicator (SRI) or a bit number of a Transmission Antenna Indicator (TAI) in Downlink Control Information (DCI) for scheduling data transmission, where the target port number is a port number used for data transmission or a port number of a Sounding Reference Signal (SRS) resource associated with the data transmission;

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

the determining module 410 is further configured to: 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.

A communication module 430, configured to perform the data transmission using the determined transmission parameter.

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

receiving a high-level signaling sent by network equipment, wherein the high-level signaling comprises the target port number; or,

receiving DCI (Downlink control information) sent by the network equipment and used for scheduling the data transmission, wherein the DCI comprises the target port number;

the determining module 410 is specifically configured to:

and determining the number of the target ports according to the high-layer signaling or the DCI.

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

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

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

Optionally, in some embodiments, the size of the TAI bit number corresponding to the port number equal to 1 is preconfigured by the network device to the terminal device, or is determined by the terminal device according to the reported antenna number.

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

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 pre-configured by the network device to the terminal device, or agreed by a protocol.

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:

a determining module 510, configured to determine, according to a target port number, a bit number of a sounding reference signal, SRS, resource indicator, SRI, or a bit number of a transmission antenna indicator, TAI, in downlink control information, DCI, for scheduling data transmission, where the target port number is a port number used for terminal equipment to perform the data transmission or a port number of an SRS resource associated with the data transmission;

a generating module 520, configured to generate the DCI according to the bit number of the SRI or the bit number of the TAI;

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

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

Optionally, in some embodiments, the communication module further:

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. 4, which can be used to execute the content of the terminal device corresponding to the method 200 in fig. 2. The terminal device 600 includes: an input interface 610, an output interface 620, a processor 630 and a memory 640, wherein the input interface 610, the output interface 620, the processor 630 and the memory 640 may be connected by a bus system. The memory 640 is used to store programs, instructions or code. The processor 630 is configured to execute the program, instructions or codes in the memory 640 to control the input interface 610 to receive signals, control the output interface 620 to transmit signals, and perform the operations in the foregoing method embodiments.

It should be understood that, in the embodiment of the present application, the processor 630 may be a Central Processing Unit (CPU), and the processor 630 may also be other general processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), ready-made programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or 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 a read-only memory and a random access memory, and provides instructions and data to the processor 630. A portion of the memory 640 may also include non-volatile random access memory. For example, the memory 640 may also store device type information.

In implementation, the various aspects of the methods described above may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 630. The contents of the method disclosed in connection with the embodiments of the present application may be directly embodied as a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 640, and the processor 630 reads the information in the memory 640 and performs the above method in combination with the hardware thereof. To avoid repetition, it is not described in detail here.

In a specific embodiment, the determining module 410 and the obtaining module 420 included in the terminal device in fig. 4 may be implemented by the processor 630 in fig. 6, and the communication module 430 included in the terminal device 400 may be implemented by the input interface 610 and the output interface 620 in fig. 6.

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. 5, which can be used to execute the content of the network device corresponding to the method 300 in fig. 3. The network device 700 includes: an input interface 710, an output interface 720, a processor 730, and a memory 740, wherein the input interface 710, the output interface 720, the processor 730, and the memory 740 may be connected by a bus system. The memory 740 is used to store programs, instructions or code. The processor 730 is configured to execute the program, 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 perform the operations of the foregoing method embodiments.

It should be understood that, in the embodiment of the present application, the processor 730 may be a Central Processing Unit (CPU), and the processor 730 may also be other general processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or 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 a read-only memory and a 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, the memory 740 may also store device type information.

In implementation, the various aspects of the methods described above may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 730. The contents of the method disclosed in connection with the embodiments of the present application may be directly embodied as a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 740, and the processor 730 reads the information in the memory 740 and combines the hardware to implement the method. To avoid repetition, it is not described in detail here.

In a specific embodiment, the determining module 510 and the generating module 520 included in the network device in fig. 5 may be implemented by the processor 730 in fig. 7, and the communication module 530 included in the network device 500 may be implemented by the input interface 710 and the output interface 720 in fig. 7.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for uplink transmission, comprising:

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;

performing the data transmission using the determined transmission parameters;

the terminal device determining the number of target ports includes:

2. The method of claim 1, wherein the number of ports for data transmission comprises a number of transmission ports for a Physical Uplink Shared Channel (PUSCH) or a Physical Uplink Control Channel (PUCCH).

3. The method of claim 1 or 2, wherein the SRS resources associated with the data transmission comprise SRS resources indicated by SRIs in DCI scheduling the data transmission.

4. The method of claim 1 or 2, wherein the SRS resources associated with the data transmission comprise SRS resources used to determine transmission parameters for the data transmission, wherein the transmission parameters comprise at least one of:

5. The method according to claim 1 or 2, wherein the determining, according to the number of target ports, a bit number of an SRS Resource Indicator (SRI) or a bit number of a Transmission Antenna Indicator (TAI) in Downlink Control Information (DCI) for scheduling the data transmission comprises:

6. The method of claim 5, wherein the first mapping relationship is pre-configured or protocol-agreed by the network device to the terminal device.

7. The method of claim 5, wherein in the first mapping relationship, the port number is 1 and the port number is greater than 1, which correspond to different SRI bits respectively.

8. The method of claim 5, wherein in the first mapping relationship, a first port number corresponds to a first SRI bit number, a second port number corresponds to a second SRI bit number, and if the first port number is greater than the second port number, the first SRI bit number is smaller than the second SRI bit number.

9. The method according to claim 1 or 2, wherein the determining, according to the number of target ports, a bit number of an SRS Resource Indicator (SRI) or a bit number of a Transmission Antenna Indicator (TAI) in Downlink Control Information (DCI) for scheduling the data transmission comprises:

10. The method of claim 9, wherein the second mapping relationship is pre-configured or protocol-agreed by the network device to the terminal device.

11. The method according to claim 9, wherein in the second mapping relationship, the number of TAI bits corresponding to the number of ports being greater than 1 is zero, and the number of TAI bits corresponding to the number of ports being equal to 1 is greater than zero.

12. The method of claim 9, wherein the number of the ports is equal to the size of the TAI bit number corresponding to 1, and the size is configured in advance to the terminal device by the network device, or determined by the terminal device according to the reported number of the antennas.

13. The method of claim 1 or 2, wherein the determining the corresponding SRS resource according to the SRI comprises:

14. The method of claim 1 or 2, wherein the determining the corresponding transmit antenna based on the TAI comprises:

15. The method of claim 1 or 2, wherein the determining the transmission parameters for the data transmission according to the SRS resources or the transmitting antennas comprises:

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

16. The method of claim 15, wherein the determining, by the terminal device, the transmission beam for the data transmission according to the transmission beam comprises:

17. The method of claim 1 or 2, wherein the determining the transmission parameters for the data transmission according to the SRS resources or the transmitting antennas comprises:

and determining the number of transmission layers for the data transmission according to the number of ports of the SRS resource and the corresponding relation between the transmission layer number indication RI and the number of the transmission layers in the DCI.

18. The method of claim 1 or 2, wherein the determining the transmission parameters for the data transmission according to the SRS resources or the transmitting antennas comprises:

19. The method of claim 1 or 2, wherein the determining the transmission parameters for the data transmission according to the SRS resources or the transmitting antennas comprises:

20. A method for uplink transmission, comprising:

the network equipment determines the bit number of a Sounding Reference Signal (SRS) resource indication (SRI) or the bit number of a Transmission Antenna Indication (TAI) in Downlink Control Information (DCI) for scheduling data transmission according to the number of target ports, wherein the number of the target ports is the number of ports for terminal equipment to perform data transmission or the number of ports of the SRS resource associated with the data transmission;

generating the DCI according to the bit number of the SRI or the bit number of the TAI;

transmitting the DCI to the terminal device;

the method further comprises the following steps:

21. The method of claim 20, wherein the number of ports for data transmission comprises a number of transmission ports for a Physical Uplink Shared Channel (PUSCH) or a Physical Uplink Control Channel (PUCCH).

22. The method of claim 20 or 21, wherein the SRS resources associated with the data transmission comprise SRS resources indicated by SRIs in DCI scheduling the data transmission.

23. The method of claim 20 or 21, wherein the SRS resources associated with the data transmission comprise SRS resources used for determining transmission parameters for the data transmission, wherein the transmission parameters comprise at least one of:

24. A terminal device, comprising:

a determining module, configured to determine a target port number, and determine, according to the target port number, a bit number of an SRS Resource Indicator (SRI) or a bit number of a Transmission Antenna Indicator (TAI) in Downlink Control Information (DCI) for scheduling data transmission, where the target port number is a port number used for data transmission or a port number of a Sounding Reference Signal (SRS) resource associated with the data transmission;

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

the determination module is further to: 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;

a communication module for performing the data transmission using the determined transmission parameters;

the communication module is further configured to:

the determining module is specifically configured to:

25. The terminal device of claim 24, wherein the number of ports for data transmission comprises a number of transmission ports for a physical uplink shared channel, PUSCH, or a physical uplink control channel, PUCCH.

26. The terminal device of claim 24 or 25, wherein the SRS resources associated with the data transmission comprise SRS resources indicated by SRIs in DCI scheduling the data transmission.

27. The terminal device of claim 24 or 25, wherein the SRS resources associated with the data transmission comprise SRS resources used to determine transmission parameters for the data transmission, wherein the transmission parameters comprise at least one of:

28. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to:

29. The terminal device of claim 28, wherein the first mapping relationship is pre-configured or protocol-agreed by the network device to the terminal device.

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, which correspond to different SRI bits.

31. The terminal device of claim 28, wherein in the first mapping relationship, a first port number corresponds to a first SRI bit number, a second port number corresponds to a second SRI bit number, and if the first port number is greater than the second port number, 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:

33. The terminal device of claim 32, wherein the second mapping relationship is pre-configured or protocol-agreed by the network device to the terminal device.

34. The terminal device according to claim 32, wherein in the second mapping relationship, the number of TAI bits corresponding to the port number being greater than 1 is zero, and the number of TAI bits corresponding to the port number being equal to 1 is greater than zero.

35. The terminal device of claim 32, wherein the number of ports is equal to the size of the TAI bit number corresponding to 1, and the size is pre-configured to the terminal device by the network 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:

37. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to:

38. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to:

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

39. The terminal device of claim 38, wherein the determining module is specifically configured to:

40. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to:

41. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to:

42. The terminal device according to claim 24 or 25, wherein the determining module is specifically configured to:

43. A network device, comprising:

a determining module, configured to determine, according to a target port number, a bit number of a Sounding Reference Signal (SRS) resource indicator (SRI) or a bit number of a Transmission Antenna Indicator (TAI) in Downlink Control Information (DCI) for scheduling data transmission, where the target port number is a port number used for terminal equipment to perform the data transmission or a port number of an SRS resource associated with the data transmission;

a generating module, configured to generate the DCI according to the bit number of the SRI or the bit number of the TAI;

a communication module, configured to send the DCI to the terminal device;

the communication module is further configured to:

44. The network device of claim 43, wherein the number of ports for data transmission comprises a number of transmission ports for a Physical Uplink Shared Channel (PUSCH) or a Physical Uplink Control Channel (PUCCH).

45. The network device of claim 43 or 44, wherein the SRS resources associated with the data transmission comprise SRS resources indicated by SRIs in DCI scheduling the data transmission.

46. The network device of claim 43 or 44, wherein the SRS resources associated with the data transmission comprise SRS resources used to determine transmission parameters for the data transmission, wherein the transmission parameters comprise at least one of: