WO2018170691A1 - Procédé de transmission de liaison montante, dispositif terminal et dispositif de réseau - Google Patents

Procédé de transmission de liaison montante, dispositif terminal et dispositif de réseau Download PDF

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Publication number
WO2018170691A1
WO2018170691A1 PCT/CN2017/077352 CN2017077352W WO2018170691A1 WO 2018170691 A1 WO2018170691 A1 WO 2018170691A1 CN 2017077352 W CN2017077352 W CN 2017077352W WO 2018170691 A1 WO2018170691 A1 WO 2018170691A1
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Prior art keywords
ports
data transmission
terminal device
bits
sri
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PCT/CN2017/077352
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English (en)
Chinese (zh)
Inventor
唐海
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Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201780048072.5A priority Critical patent/CN109565855B/zh
Priority to PCT/CN2017/077352 priority patent/WO2018170691A1/fr
Publication of WO2018170691A1 publication Critical patent/WO2018170691A1/fr

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  • the present application relates to the field of communications, and more particularly, to a method, a terminal device, and a network device for uplink transmission.
  • the terminal device can use a single antenna port or multiple antenna ports for uplink transmission.
  • the number of different antenna ports is different for the Downlink Control Information (DCI).
  • the terminal device can send multiple probe references.
  • Signaling Reference Signal (SRS) resources different SRS resources use different transmit beams
  • network devices can determine the SRS resources with the best received signal quality, and the SRS resource indication (SRI) is included in the DCI through the scheduled data transmission.
  • SRS Signaling Reference Signal
  • SRI SRS resource indication
  • the information indicating the best quality SRS resource is received, 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 by the data transmission, but
  • the number of transmit beams required is different for different antenna port numbers.
  • the terminal device When the terminal device supports only a single antenna port, the terminal device can switch between multiple antennas, and the transmission antenna in the DCI indicates a Transmit Antenna Indication (TAI), which can be used by the network device to indicate the use to the terminal device. Which antenna is used for uplink transmission.
  • TAI Transmit Antenna Indication
  • the uplink transmission uses different number of antenna ports, and the requirements for transmission parameters are different. Therefore, for the terminal device, how to flexibly adjust the transmission parameters according to the number of antenna ports is an urgent problem to be solved.
  • the embodiment of the present application provides a method for uplink transmission, a terminal device, and a network device, which can flexibly adjust transmission parameters according to the number of antenna ports.
  • a method for uplink transmission including: determining, by a terminal device, a number of target ports, where the number of target ports is a port number for data transmission or a port of a sounding reference signal SRS resource associated with the data transmission And determining, according to the number of the target ports, the number of bits of the SRS resource indication SRI in the downlink control information DCI for scheduling the data transmission, or the number of bits of the transmission antenna indicating the TAI; and the number of bits according to the SRI from the DCI Obtain an SRI, or according to the TAI The number of bits is obtained from the DCI; the corresponding SRS resource is determined according to the SRI, or a corresponding transmitting antenna is determined according to the TAI; and the data transmission is determined according to the SRS resource or the transmitting antenna. Transfer parameters. The data transmission is performed using the determined transmission parameters.
  • 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.
  • the SRS resource associated with the data transmission includes scheduling an SRS resource indicated by an SRI in a DCI of the data transmission.
  • the SRS resource associated with the data transmission includes an SRS resource for determining a transmission parameter of the data transmission, where the transmission parameter includes the following At least one item:
  • the number of transmission layers, precoding matrix, modulation and coding mode, and time-frequency physical resources are defined.
  • the terminal device determines a target port number, including:
  • the terminal device determines the number of the target ports according to the high layer signaling or the DCI.
  • the determining, according to the number of the target ports, the number of bits of the SRS resource indication SRI in the downlink control information DCI for scheduling the data transmission, or the transmission antenna indication The number of bits in the TAI, including:
  • the number of bits of the SRI is determined according to the number of the target ports and the first mapping relationship between the number of ports and the number of SRI bits.
  • the first mapping relationship is pre-configured by the network device to the terminal device, or protocol agreed upon.
  • the number of ports is 1 and the number of ports is greater than 1 respectively corresponding to different SRI bit numbers.
  • the first port number corresponds to the first SRI bit number
  • the second port number corresponds to the second SRI bit number, if The number of the first port is greater than the number of the second port, and the number of the first SRI bits is smaller than the number of the second SRI bits.
  • the determining, according to the number of the target ports, the number of bits of the SRS resource indication SRI in the downlink control information DCI for scheduling the data transmission, or the transmission antenna indication The number of bits in the TAI, including:
  • the second mapping relationship is pre-configured by the network device to the terminal device, or protocol agreed.
  • 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.
  • 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.
  • the determining, according to the SRI, the corresponding SRS resource includes:
  • the determining, according to the TAI, a corresponding transmit antenna includes:
  • the transmitting antenna corresponding to the TAI is determined.
  • the determining, according to the SRS resource or the transmitting antenna, a transmission parameter for the data transmission includes:
  • a transmit beam used for the data transmission is determined based on the transmit beam.
  • the determining, by the terminal device, the transmit beam used by the data transmission according to the transmit beam includes:
  • the transmit beam is determined to be a transmit beam used for the data transmission.
  • the according to the SRS resource Or the transmitting antenna determines transmission parameters for the data transmission, including:
  • the number of transmission layers used for the data transmission is determined according to the number of ports of the SRS resource and the number of transmission layers in the DCI in the case where the number of transmission layers in the DCI indicates the correspondence between the RI and the number of transmission layers.
  • the determining, according to the SRS resource or the transmitting antenna, a transmission parameter for the data transmission includes:
  • different port numbers correspond to different codebooks.
  • the third mapping relationship is pre-configured by the network device to the terminal device, or protocol agreed upon.
  • the determining, according to the SRS resource or the transmitting antenna, a transmission parameter for the data transmission includes:
  • the transmitting antenna is determined as a transmission antenna for the data transmission.
  • the second aspect provides a method for uplink transmission, including: determining, by the network device, the number of bits of the sounding reference signal SRS resource indication SRI in the downlink control information DCI of the scheduled data transmission according to the number of the target port, or the transmitting antenna indicating the TAI a number of bits, wherein the number of target ports is a number of ports used by the terminal device to perform the data transmission or a number of ports of the SRS resource associated with the data transmission; according to the number of bits of the SRI, or a bit of the TAI And generating the DCI; transmitting the DCI to the terminal device.
  • 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.
  • the SRS resource associated with the data transmission includes scheduling an SRS resource indicated by an SRI in a DCI of the data transmission.
  • the SRS resource associated with the data transmission includes an SRS resource for determining a transmission parameter of the data transmission, where the transmission parameter includes the following At least one item:
  • the number of transmission layers, precoding matrix, modulation and coding mode, and time-frequency physical resources are defined.
  • the network device determines, according to the number of target ports, the number of bits of the sounding reference signal SRS resource indication SRI in the downlink control information DCI for scheduling data transmission, or the transmission antenna Indicates the number of bits in the TAI, including:
  • the number of bits of the SRI is determined according to the number of the target ports and the first mapping relationship between the number of ports and the number of SRI bits.
  • the number of ports is 1 and the number of ports is greater than 1 respectively corresponding to different SRI bit numbers.
  • the first port number corresponds to the first SRI bit number
  • the second port number corresponds to the second SRI bit number, if The number of the first port is greater than the number of the second port, and the number of the first SRI bits is smaller than the number of the second SRI bits.
  • the network device determines, according to the number of target ports, the number of bits of the sounding reference signal SRS resource indication SRI in the downlink control information DCI for scheduling data transmission, or the transmission antenna Indicates the number of bits in the TAI, including:
  • 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.
  • the method further includes:
  • the network device sends a DCI for scheduling the data transmission to the terminal device, where the DCI includes the target port number.
  • a terminal device comprising means for performing the method of the first aspect or various implementations thereof.
  • a network device comprising means for performing the method of the second aspect or various implementations thereof.
  • a fifth aspect provides a terminal device including a memory, a processor, and a transceiver, wherein the memory is configured to store a program, the processor is configured to execute a program, when the program is executed, The processor performs the method of the first aspect based on the transceiver.
  • a network device comprising: a memory for storing a program, a processor 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.
  • a computer readable medium storing program code for execution by a terminal device, the program code comprising instructions for performing the method of the first aspect.
  • a computer readable medium storing program code for execution by a terminal device, the program code comprising instructions for performing the method of the second aspect.
  • FIG. 1 is a schematic diagram of a wireless communication system in accordance with 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.
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS general purpose Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • FIG. 1 shows a wireless communication system 100 to which an embodiment of the present application is applied.
  • the wireless communication system 100 can include a network device 110.
  • Network device 100 can 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.
  • the network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or may be a base station (NodeB, NB) in a WCDMA system, or may be an evolved base station in an LTE system.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • the network device can be a relay station, an access point, an in-vehicle device, a wearable device, A network side device in a future 5G network or a network device in a publicly available Public Land Mobile Network (PLMN) in the future.
  • PLMN Public Land Mobile Network
  • the wireless communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110.
  • Terminal device 120 can be mobile or fixed.
  • the terminal device 120 can refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station,
  • UE User Equipment
  • subscriber unit a subscriber station
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • D2D device to device communication
  • D2D device to device
  • the 5G system or network may also be referred to as a New Radio (NR) system or network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • 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. The application embodiment does 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 performed by a terminal device in the wireless communication system shown in FIG. 1. As shown in FIG. 2, the method 200 includes :
  • the terminal device determines a number of target ports, where the number of target ports is a number of ports used for data transmission or a number of ports of sounding reference signal SRS resources associated with the data transmission;
  • the number of ports used for data transmission includes a transmission port for a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH). number.
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • the terminal device can determine the number of ports for PUSCH or PUCCH.
  • the SRS resource associated with the data transmission includes scheduling an SRS resource indicated by an SRI in a DCI of the data transmission.
  • the terminal device may send multiple SRS resources, and each SRS resource uses one transmit beam, that is, the multiple SRS resources use different transmit beams, or the multiple SRSs and multiple
  • the network device can determine the best received SRS resource according to the receiving condition of the multiple SRS resources, and the SRI in the DCI of the uplink transmission is used to indicate that the network device determines the best receiving quality.
  • the information about the SRS resource the terminal device may determine, according to the SRI in the DCI, the SRS resource with the best reception quality for the network device. Since the SRS resource and the transmission beam have a one-to-one correspondence, the terminal device may determine the reception.
  • the transmit beam corresponding to the best quality SRS resource so that the transmit beam can be determined as the transmit beam used for the data transmission.
  • the SRS resource associated with the data transmission may be an SRS resource indicated by an SRI in a DCI for scheduling the data transmission, or the SRS resource associated with the data transmission.
  • the best received SRS resource for the network device may be an SRS resource indicated by an SRI in a DCI for scheduling the data transmission, or the SRS resource associated with the data transmission.
  • the SRS resource associated with the data transmission includes an SRS resource for determining a transmission parameter of the data transmission, the transmission parameter including at least one of the following:
  • the number of transmission layers, precoding matrix, modulation and coding mode, and time-frequency physical resources are defined.
  • the SRS resource associated with the data transmission may be for scheduling the data transmission.
  • the SRS resource indicated by the SRI in the transmitted DCI that is, the SRS resource used to determine the transmission beam of the data transmission, may also be an SRS resource for determining a transmission parameter (or scheduling information) of the data transmission.
  • the terminal device determines the number of target ports, including:
  • the terminal device determines the number of the target ports according to the high layer signaling or the DCI.
  • the network device may configure the target port number to the terminal device by using high layer signaling or scheduling DCI of the data transmission.
  • the DCI size for scheduling the data transmission is the same.
  • the terminal device may determine the number of the target port according to a Port Number Indication (PNI) in a DCI that schedules the data transmission.
  • PNI Port Number Indication
  • S220 Determine, according to the number of the target ports, a number of bits of the SRS resource indication SRI in the downlink control information DCI for scheduling the data transmission, or a number of bits of the transmission antenna indicating the TAI;
  • the terminal device may determine the number of bits 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 uses a single antenna port for data transmission, 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, because the SRS resources and the transmit beams are in one-to-one correspondence, that is, the SRI may indicate more beams, thereby enabling Increase the uplink transmission gain when a single antenna port is used. For example, if the number of the target ports is greater than 1 or greater than the first threshold, that is, the terminal device uses multiple antenna ports for data transmission.
  • the terminal device determines that the SRI in the DCI is a smaller number of SRI bits, thereby reducing DCI overhead.
  • the number of SRI bits can be determined when the number of ports is 1, and the number of SRI bits is determined when the number of ports is greater than 1, or more when the number of ports is less than the first threshold.
  • the number of SRI bits is determined.
  • the number of SRI bits corresponding to each port number may be determined, that is, the number of ports and the number of SRI bits are one-to-one correspondence, and the number of ports is It is inversely proportional to the number of SRI bits, that is, the more ports, the number of SRI bits The less.
  • the terminal device determines that there is an N-bit SRI in a single-antenna port scenario, that is, when the number of ports is 1, in a multi-antenna port scenario, that is, when the number of ports is greater than 1, the terminal device determines An MRI with 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 the number of NM bits of the SRI is at the port number when the number of ports is 1. When it is greater than 1, it can be used to indicate other information, for example, to indicate broadband or narrow-band Precoding Matrix Indication (PMI) information, thereby being capable of reducing DCI overhead in a multi-antenna port scenario.
  • PMI Precoding Matrix Indication
  • the terminal device may further determine a number of bits of the TAI according to the number of the target ports.
  • the terminal device may switch between multiple transmission antennas, where the TAI is used to indicate network device configuration. Antenna for current data transmission.
  • the terminal device may determine the number of bits of the TAI according to the number of the target ports. For example, the terminal device may have a target port number of 1.
  • the terminal device determines that there are N bits of TAI in a scenario of a single antenna port, that is, when the number of ports is 1, in a multi-antenna port scenario, that is, when the number of ports is greater than 1, the terminal device determines If there is a zero-bit TAI, if the terminal device uses the same size DCI to schedule data transmission in different port number scenarios, then when the number of ports is 1, the N bits of the TAI can be used when the number of ports is greater than 1. Indicating other information, for example, to indicate broadband or wideband PMI information, thereby reducing DCI overhead in a multi-antenna port scenario.
  • determining, according to the number of the target ports, the number of bits of the SRS resource indication SRI in the downlink control information DCI for scheduling the data transmission, or the number of bits of the transmission antenna indicating the TAI including :
  • the number of bits of the SRI is determined according to the number of the target ports and the first mapping relationship between the number of ports and the number of SRI bits.
  • the number of ports and the number of bits of the SRI may have a first mapping relationship, and the first mapping relationship may be a one-to-one mapping relationship, that is, different port numbers correspond to different SRI bit numbers, for example, the number of ports is 1.
  • the number of SRI bits corresponding to 2, 4 respectively 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 corresponding to different number of bits, that is, The number of ports is greater than 1 for the same number of bits, or the number of ports can be divided into several parts, and each part corresponds to the corresponding number of SRI bits.
  • the number of ports is divided into ports, the number of ports is 1 to 3, and the number of ports is > 3 three parts, each part corresponds to the corresponding number of SRI bits, for example, the number of ports is 1 corresponding to the number of SRI bits 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 is 2,
  • the specific embodiment of the application embodiment does not limit the number of ports and the number of SRI bits.
  • the number of ports is 1 and the number of ports is greater than 1 respectively corresponding to different SRI bit numbers.
  • a single-antenna port scenario and a multi-antenna port scenario can be configured, which respectively correspond to different SRI bit numbers.
  • the first port number corresponds to the first SRI bit number
  • the second port number corresponds to the second SRI bit number, 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.
  • the more the number of ports the smaller the number of corresponding bits. This is because the more the number of ports, the better the uplink transmission performance. Therefore, it is not necessary to indicate more beams by SRI to improve the uplink beamforming performance, or By indicating more beams by more SRI bits, the uplink transmission performance is limited, and the DCI overhead is increased. On the other hand, the smaller the number of ports, the lower the uplink transmission performance is. It is necessary to determine that more SRI bit numbers indicate more beams to improve the uplink beamforming performance.
  • the first mapping relationship may be that the network device is pre-configured to the terminal device, for example, the network device may configure the first device to the terminal device by using high layer signaling.
  • the mapping relationship, or the first mapping relationship may also be a protocol contract.
  • determining, according to the number of the target ports, the number of bits of the SRS resource indication SRI in the downlink control information DCI for scheduling the data transmission, or the number of bits of the transmission antenna indicating the TAI including :
  • the number of ports and the number of bits of the TAI 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 bit numbers, or may be multiple pairs.
  • a mapping relationship for example, the number of ports is 1 and the number of ports is greater than 1 corresponding to different number of bits, that is, the number of ports is greater than 1 corresponding to the same number of bits, or the number of ports may be divided into several parts, each part corresponding to the corresponding TAI bit
  • the number of the port and the TAI are not limited in this embodiment. The specific correspondence of the number of bits.
  • 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.
  • the single-antenna port scenario and the multi-antenna port scenario can be configured to correspond to different TAI bit numbers.
  • the TAI is used to indicate the currently used transmission antenna configured by the network device.
  • the TAI is hardly used. Therefore, when the number of ports is 1, that is, the single-antenna port scenario, the number of TAI bits is greater than zero, and the number of ports is greater than 1, that is, a multi-antenna port scenario, and the number of TAI bits can be configured to be equal to zero, that is, multiple antennas. Under the port, the TAI is not included in the DCI.
  • the size of the number of TAI bits corresponding to the number of ports is equal to 1 by the network device, or is determined by the terminal device according to the number of reported antennas.
  • the network device may pre-configure the number of TAI bits corresponding to the number of ports when the port number is 1 by using the high-layer signaling, or the size of the corresponding TAI bit when the number of ports is 1, may also be determined by the terminal device according to the size of the TAI bit.
  • the number of reported antennas is determined. For example, if the number of antennas reported by the terminal device is 4, the terminal device can switch between 4 antennas, and the number of TAI bits can be 2, for indicating the 4 antennas, or if the terminal The number of antennas reported by the device is 6, and the number of TAI bits determined by the terminal device may be 3.
  • the second mapping relationship may be that the network device is pre-configured to the terminal device, for example, the network device may configure the second device to the terminal device by using high layer signaling.
  • the mapping relationship, or the second mapping relationship may also be a protocol contract.
  • the terminal device may acquire an SRI from the DCI according to the number of bits of the SRI, that is, obtain information of the SRS resource from the DCI, or acquire a 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 method for uplink transmission using the embodiment of the present application only needs to detect the size of one DCI, thereby being able to reduce the complexity of the blind detection DCI of the terminal device.
  • S240 Determine a corresponding SRS resource according to the SRI, or determine a corresponding transmit antenna according to the TAI.
  • the determining, according to the SRI, the corresponding SRS resource includes:
  • the terminal device may send an SRS sent on multiple SRS resources, and determine a transmission parameter of the data transmission, for example, a transmission layer number, a precoding matrix, a modulation coding mode, or a time-frequency physical resource, or the like, or It can also be used to determine the transmit beam for data transmission.
  • the terminal device may determine, according to the SRI, the SRS resource corresponding to the SRI from the multiple SRS resources that are used by the SRS.
  • the multiple SRS resources may be configured by the network device to the terminal device.
  • each SRS resource may correspond to one transmit beam, that is, the SRS is sent on different SRS resources to use different transmit beams, and the terminal device may send the transmit beam corresponding to the SRS resource as the data transmission. Beam.
  • determining, according to the TAI, a corresponding transmit antenna including:
  • the transmitting antenna corresponding to the TAI is determined.
  • the terminal device may determine, according to the TAI, a transmitting antenna corresponding to the TAI from a plurality of transmitting antennas that are used by the SRS, and optionally, the terminal device may correspond to the TAI.
  • the transmitting antenna serves as a transmitting antenna for the data transmission.
  • determining, according to the SRS resource or the sending antenna, a transmission parameter for the data transmission including:
  • a transmit beam used for the data transmission is determined based on the transmit beam.
  • the terminal device sends the SRS on the multiple SRS resources by using different transmit beams, where the SRS resource is one of the multiple SRS resources, and the terminal device may determine, according to the SRS resource, the SRS.
  • the transmission beam used for transmitting the SRS is transmitted on the resource, so that the transmission beam used for the data transmission can be determined according to the transmission beam.
  • the terminal device may determine the transmit beam as a transmit beam used for the data transmission.
  • determining, according to the SRS resource or the sending antenna, a transmission parameter for the data transmission including:
  • the number of transmission layers used for the data transmission is determined according to the number of ports of the SRS resource and the number of transmission layers in the DCI in the case where the number of transmission layers in the DCI indicates the correspondence between the RI and the number of transmission layers.
  • the SRS resource may be used to determine transmission parameters such as a transmission layer number, a precoding matrix, or a modulation and coding mode of the data transmission. It can be assumed that, in the case of a different number of ports, the number of the transmission layer indicator (RI) in the DCI has a corresponding relationship with the number of transmission layers, and the terminal device can combine the number of ports according to the SRS resource.
  • the correspondence between the RI and the number of transport layers determines the number of transport layers used for data transmission in the case of the number of ports. For example, the number of bits of the RI is 3, the state is from 000 to 111, and when the number of ports is 1, the number of transmission layers cannot be greater than 1.
  • the states 000 to 111 can both be used to indicate the number of transmission layers 1; when the number of ports is 4, The number of transmission layers cannot exceed 4, then the status 000 to 111 can be used to indicate the number of transmission layers 1 to 4.
  • 000 and 001 can be set to indicate the number of transmission layers 1, 010 and 011 indicate the number of transmission layers 2, 100 and 101 indicate transmission.
  • the number of layers 3, 110, and 111 indicates the number of transmission layers 4.
  • the terminal device determines that the number of target ports is 4, and the RI in the acquired DCI is 100, the terminal device can determine that the number of transmission layers is 3. It should be understood that the present application does not limit the specific correspondence between the RI and the number of transport layers in the DCI in the case of different port numbers.
  • the RI and the number of transport layers in the DCI may also have such a Corresponding 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, 011 to 111 indicate the number of transmission layers 4.
  • determining, according to the SRS resource or the sending antenna, a transmission parameter for the data transmission including:
  • the SRS resource may be used to determine transmission parameters such as a transmission layer number, a precoding matrix, a modulation coding mode, or a time-frequency physical resource of the data transmission.
  • the terminal device may determine, according to the number of ports of the SRS resource, a third mapping relationship between the port number and the codebook, a target codebook used for the data transmission, and then according to the PMI in the DCI, A precoding matrix for the data transmission is determined in the object codebook.
  • the third mapping relationship different port numbers correspond to different codebooks, that is, the number of ports and the codebook are one-to-one correspondence, and the third mapping relationship may be that the network device is pre-configured to The terminal device may also be a protocol, and the application The embodiment does not limit this.
  • the terminal device may send an SRS on multiple SRS resources, and the terminal device may determine a corresponding SRS resource according to the SRI, so that a transmit beam used by the SRS may be determined to be sent on the SRS resource, so that The terminal device may determine the transmit beam as a transmit beam used by the data transmission, such that the transmit signal may be used for the data transmission.
  • the terminal device may determine, according to the TAI, a transmit antenna corresponding to the TAI, by using a plurality of transmit antennas that are sent by the SRS from the terminal device, so that the transmit antenna corresponding to the TAI may be determined as the data.
  • the transmitting antenna used for transmission such that the terminal device can perform the data transmission using the transmitting antenna corresponding to the TAI.
  • the terminal device may further determine a transmission parameter used for the data transmission, for example, a transmission layer number, a precoding matrix, a modulation coding mode, or a time-frequency physical resource, so that the terminal device may use the The transmission parameters are used for the data transmission.
  • a transmission parameter used for the data transmission for example, a transmission layer number, a precoding matrix, a modulation coding mode, or a time-frequency physical resource.
  • a method for uplink transmission according to an embodiment of the present application is described in detail from the perspective of a terminal device.
  • a method for uplink transmission according to an embodiment of the present application is described in detail from the perspective of a network device. It should be understood that the description on the network device side and the description on the terminal device side correspond to each other. For a similar description, refer to the above. To avoid repetition, details are not described herein again.
  • 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:
  • the network device determines, according to the number of target ports, the number of bits of the sounding reference signal SRS resource indication SRI in the downlink control information DCI for scheduling data transmission, or the number of bits of the transmission antenna indicating the TAI, where the target port number 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;
  • the S310 may refer to the related description of S220 of the method 200 described in FIG. 2, and details are not described herein for brevity.
  • the network device may generate a 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 quality of the SRS resource.
  • the information of the resource the network device can determine which antenna is indicated in the TAI according to actual conditions.
  • the number of ports used for data transmission includes a number of transmission ports for a physical uplink shared channel PUSCH or a physical uplink control channel PUCCH.
  • the SRS resource associated with the data transmission includes scheduling an SRS resource indicated by an SRI in a DCI of the data transmission.
  • the SRS resource associated with the data transmission includes an SRS resource for determining a transmission parameter of the data transmission, the transmission parameter including at least one of the following:
  • the number of transmission layers, precoding matrix, modulation and coding mode, and time-frequency physical resources are defined.
  • the network device determines, according to the number of target ports, the number of bits of the sounding reference signal SRS resource indication SRI in the downlink control information DCI of the scheduled data transmission, or the number of bits of the transmission antenna indicating the TAI, include:
  • the number of bits of the SRI is determined according to the number of the target ports and the first mapping relationship between the number of ports and the number of SRI bits.
  • the number of ports is 1 and the number of ports is greater than 1 respectively corresponding to different SRI bit numbers.
  • the first port number corresponds to the first SRI bit number
  • the second port number corresponds to the second SRI bit number, 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.
  • the network device determines, according to the number of target ports, the number of bits of the sounding reference signal SRS resource indication SRI in the downlink control information DCI of the scheduled data transmission, or the number of bits of the transmission antenna indicating the TAI, include:
  • 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.
  • the method further includes:
  • 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 embodiment of the present application is described in detail above with reference to FIG. 2 to FIG. 3, which is combined with FIG. 4 below.
  • the device embodiment of the present application is described in detail with reference to FIG. 7. It should be understood that the device embodiment and the method embodiment correspond to each other, and a similar description may 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:
  • a determining module 410 configured to determine a number of target ports, and determine, according to the number of the target ports, a number of bits of the SRS resource indication SRI in the downlink control information DCI for scheduling the data transmission, or a number of bits of the transmission antenna indicating the TAI, where
  • the number of target ports is the number of ports used for data transmission or the number of ports of sounding reference signal SRS resources associated with the data transmission;
  • the obtaining module 420 is configured to obtain an SRI from the DCI according to the number of bits of the SRI, or obtain a TAI from the DCI according to the number of bits of the TAI;
  • the determining module 410 is further configured to: determine a corresponding SRS resource according to the SRI, or determine a corresponding transmit antenna according to the TAI; and determine a transmission parameter used for the data transmission according to the SRS resource or the transmit antenna .
  • the communication module 430 is configured to perform the data transmission by using the determined transmission parameter.
  • the number of ports used for data transmission includes a number of transmission ports for a physical uplink shared channel PUSCH or a physical uplink control channel PUCCH.
  • the SRS resource associated with the data transmission includes scheduling an SRS resource indicated by an SRI in a DCI of the data transmission.
  • the SRS resource associated with the data transmission includes an SRS resource for determining a transmission parameter of the data transmission, the transmission parameter including at least one of the following:
  • the number of transmission layers, precoding matrix, modulation and coding mode, and time-frequency physical resources are defined.
  • the communication module 430 is further configured to:
  • the determining module 410 is specifically configured to:
  • the determining module 410 is specifically configured to:
  • the first mapping relationship is pre-configured by the network device to the terminal device, or protocol agreed.
  • the number of ports is 1 and the number of ports is greater than 1 respectively corresponding to different SRI bit numbers.
  • the first port number corresponds to the first SRI bit number
  • the second port number corresponds to the second SRI bit number, 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.
  • the determining module 410 is specifically configured to:
  • the second mapping relationship is pre-configured by the network device to the terminal device, or protocol agreed.
  • 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.
  • 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.
  • the determining module 410 is specifically configured to:
  • the determining module 410 is specifically configured to:
  • the transmitting antenna corresponding to the TAI is determined.
  • the determining module 410 is specifically configured to:
  • a transmit beam used for the data transmission is determined based on the transmit beam.
  • the determining module 410 is specifically configured to:
  • the transmit beam is determined to be a transmit beam used for the data transmission.
  • the determining module 410 is specifically configured to:
  • the determining module 410 is specifically configured to:
  • different port numbers correspond to different codebooks.
  • the third mapping relationship is pre-configured by the network device to the terminal device, or protocol agreed.
  • the determining module 410 is specifically configured to:
  • the transmitting antenna is determined as a transmission 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, according to the number of the target ports, the number of bits of the sounding reference signal SRS resource indication SRI in the downlink control information DCI of the scheduled data transmission, or the number of bits of the transmission antenna indicating the TAI, wherein the target port number is used 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 520 configured to generate the DCI according to the number of bits of the SRI, or the number of bits of the TAI;
  • the communication module 530 is configured to send the DCI to the terminal device.
  • the number of ports used for data transmission includes a number of transmission ports for a physical uplink shared channel PUSCH or a physical uplink control channel PUCCH.
  • the SRS resource associated with the data transmission includes scheduling an SRS resource indicated by an SRI in a DCI of the data transmission.
  • the SRS resource associated with the data transmission includes an SRS resource for determining a transmission parameter of the data transmission, the transmission parameter including at least one of the following:
  • the number of transmission layers, precoding matrix, modulation and coding mode, and time-frequency physical resources are defined.
  • the determining module 510 is specifically configured to:
  • the number of ports is 1 and the number of ports is greater than 1 respectively corresponding to different SRI bit numbers.
  • the first port number corresponds to the first SRI bit number
  • the second port number corresponds to the second SRI bit number, 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.
  • the determining module 510 is specifically configured to:
  • 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.
  • the communication module further includes:
  • the network device sends a DCI for scheduling the data transmission to the terminal device, where the DCI includes the target port number.
  • the embodiment of the present application further provides a terminal device 600, which may be the terminal device 400 in FIG. 4, which can be used to execute a terminal device corresponding to the method 200 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 code.
  • the processor 630 is configured to execute a program, an instruction or a code in the memory 640 to control the input interface 610 to receive a signal, control the output interface 620 to send a signal, and complete the operations in the foregoing method embodiments.
  • the processor 630 may be a central processing unit (“CPU"), and the processor 630 may also be other general-purpose processors, digital signal processors ( DSP), application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 640 can include a read only memory and a random access memory, and 630 provides instructions and data. A portion of the memory 640 can also include a non-volatile random access memory. For example, the memory 640 can also store information of the device type.
  • each content of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 630 or an instruction in a form of software.
  • the content of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 640, and the processor 630 reads the information in the memory 640 and completes the contents of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the determining module 410 included in the terminal device in FIG. 4, the obtaining module 420 can be implemented by the processor 630 of FIG. 6, and the communication module 430 included in the terminal device 400 can use the input interface 610 and the output interface of FIG. 620 implementation.
  • the embodiment of the present application further provides a network device 700, which may be the network device 500 in FIG. 5, which can be used to execute a network device corresponding to the method 300 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 by a bus system.
  • the memory 740 is configured to store programs, instructions or code.
  • the processor 730 is configured to execute a program, an instruction or a code in the memory 740 to control the input interface 710 to receive a signal, control the output interface 720 to send a signal, and complete the operations in the foregoing method embodiments.
  • the processor 730 may be a central processing unit (“CPU"), and the processor 730 may also be other general-purpose processors, digital signal processors ( DSP), application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 740 can include read only memory and random access memory and provides instructions and data to the processor 730. A portion of the memory 740 can also include a non-volatile random access memory. For example, the memory 740 can also store information of the device type.
  • each content of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 730 or an instruction in a form of software.
  • the content of the method disclosed in the embodiment of the present application is combined. It can be directly implemented as a hardware processor or completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 740, and the processor 730 reads the information in the memory 740 and completes the contents of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the determining module 510 included in the network device in FIG. 5, the generating module 520 can be implemented by the processor 730 of FIG. 7, and the communication module 530 included in the network device 500 can use the input interface 710 and the output interface of FIG. 720 implementation.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the 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 of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or made as a standalone product When used, it can be stored in a computer readable storage medium.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

Des modes de réalisation de la présente invention concernent un procédé de transmission de liaison montante, un dispositif terminal et un dispositif de réseau, qui peuvent ajuster de manière flexible un paramètre de transmission utilisé pour une transmission de liaison montante selon une quantité de ports. Le procédé comprend les étapes suivantes : un dispositif terminal détermine une quantité cible de ports, la quantité cible de ports étant une quantité de ports utilisés pour la transmission de données ou une quantité de ports de signal de référence de sonde (SRS) des ressources associées à la transmission de données ; déterminer, en fonction de la quantité cible de ports, une quantité de bits d'indication de ressource SRS (SRI) dans des informations de commande de liaison descendante (DCI) pour planifier la transmission de données, ou une quantité de bits d'indication d'antenne de transmission (TAI) ; acquérir un SRI à partir des DCI en fonction de la quantité de bits de SRI, ou acquérir une TAI à partir des DCI en fonction de la quantité de bits de TAI ; déterminer une ressource SRS correspondante selon le SRI, ou déterminer une antenne de transmission correspondante selon la TAI ; déterminer, en fonction de la ressource SRS ou de l'antenne d'émission, un paramètre de transmission pour la transmission de données ; et effectuer la transmission de données à l'aide du paramètre de transmission déterminé.
PCT/CN2017/077352 2017-03-20 2017-03-20 Procédé de transmission de liaison montante, dispositif terminal et dispositif de réseau WO2018170691A1 (fr)

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PCT/CN2017/077352 WO2018170691A1 (fr) 2017-03-20 2017-03-20 Procédé de transmission de liaison montante, dispositif terminal et dispositif de réseau

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CN112398622B (zh) * 2019-08-16 2022-05-20 大唐移动通信设备有限公司 一种上行发送方法、终端及网络侧设备
CN113271681B (zh) * 2020-02-17 2023-04-07 维沃移动通信有限公司 Pusch传输方法、终端及网络设备
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CN116325961A (zh) * 2020-08-05 2023-06-23 株式会社Ntt都科摩 终端、无线通信方法以及基站
CN114070528B (zh) * 2020-08-07 2023-07-14 大唐移动通信设备有限公司 一种信号传输方法、装置及存储介质
CN114389651B (zh) * 2020-10-21 2023-06-23 华为技术有限公司 调度数据传输的方法和通信装置
CN114765879A (zh) * 2021-01-15 2022-07-19 维沃移动通信有限公司 Pusch传输方法、装置、设备及存储介质
CN116073972A (zh) * 2021-11-04 2023-05-05 展讯通信（上海）有限公司 资源配置方法、装置及设备
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