WO2020052514A1 - Procédé d'envoi d'informations, procédé de réception d'informations, et dispositif - Google Patents

Procédé d'envoi d'informations, procédé de réception d'informations, et dispositif Download PDF

Info

Publication number
WO2020052514A1
WO2020052514A1 PCT/CN2019/104896 CN2019104896W WO2020052514A1 WO 2020052514 A1 WO2020052514 A1 WO 2020052514A1 CN 2019104896 W CN2019104896 W CN 2019104896W WO 2020052514 A1 WO2020052514 A1 WO 2020052514A1
Authority
WO
WIPO (PCT)
Prior art keywords
frequency domain
reference signal
time period
uplink physical
physical resource
Prior art date
Application number
PCT/CN2019/104896
Other languages
English (en)
Chinese (zh)
Inventor
刘显达
刘鹍鹏
Original Assignee
华为技术有限公司
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.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2020052514A1 publication Critical patent/WO2020052514A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the embodiments of the present application relate to mobile communication technologies, and in particular, to an information sending method, an information receiving method, and an apparatus.
  • NR new radio access technology
  • 3GPP 3rd Generation Partnership Project
  • system resources are divided into multiple orthogonal frequency division multiplexing multiple accesses in time.
  • Orthogonal Frequency Division Multiplex (OFDM) symbols are divided into several subcarriers from the frequency.
  • the physical downlink control channel (PDCCH) in the downlink usually occupies the first two or the first three OFDM symbols in a subframe.
  • the PDCCH is used to carry Downlink Control Information (DCI).
  • DCI carries UE-specific resource allocation information and UE-specific or other control information shared by the cell.
  • the physical uplink shared channel (PUSCH) in the uplink is used to carry uplink data.
  • DCI Downlink Control Information
  • DFT-Spread OFDM DFT-Spread OFDM
  • a slot typically includes 14 OFDM symbols.
  • PRB physical resource block
  • a PRB contains 12 subcarriers in the frequency domain.
  • a subcarrier within a certain OFDM symbol is called a resource element (RE).
  • RE resource element
  • a demodulation reference signal (Demodulation Reference Signal, DM-RS) is used to perform channel estimation and channel quality and spatial characteristic derivation during data demodulation.
  • DM-RS Demodulation Reference Signal
  • the DM-RS and its corresponding PUSCH are in the same time unit, and are located before the PUSCH and nested in the PUSCH to ensure uplink data demodulation performance.
  • the frequency domain resources occupied by the PUSCH are the same as the corresponding DM-RS resources to ensure the accuracy of the frequency domain channel estimation.
  • the DM-RS in the NR and the corresponding data channel use the same number of precoding and transmission ports.
  • the base station simultaneously indicates the number of DM-RS and PUSCH precoding and transmission ports by scheduling the DCI of the data channel.
  • the number of transmission ports corresponds to the number of transmission layers.
  • the DM-RS and PUSCH use the same transmission port.
  • the performance of channel estimation will directly affect the coverage problem. If the DM-RS and the corresponding PUSCH occupy the same frequency domain resources, it may affect the use of DM-RS channel estimation due to the limited uplink transmit power. Performance.
  • An information sending method, information receiving method, and device described in the embodiments of the present application are used to improve the receiving performance of the uplink demodulation reference signal DM-RS, thereby further improving the performance of channel estimation and ultimately improving the receiving performance of uplink data information. , Such as the decoding success rate of uplink data information.
  • an embodiment of the present invention provides a method for sending information.
  • the method includes a terminal device receiving first downlink control information DCI, where the first DCI includes information about a first uplink physical resource in a first time period; A first demodulation reference signal DM-RS and first data information are sent on the uplink physical resource, and a reference signal is sent in the second time period.
  • the number of frequency domain units M occupied by the first DM-RS is less than or equal to the first uplink physical
  • the number N of frequency domain units of the resource, at least a part of the frequency domain unit occupied by the reference signal overlaps with at least a part of the frequency domain unit of the first uplink physical resource, and M, N are integers greater than or equal to 1.
  • the bandwidth of the DM-RS is smaller than the bandwidth of the first physical uplink resource, which can increase the transmission power of the DM-RS, especially for the terminal equipment at the cell edge, which can improve the reception performance of the DM-RS.
  • the reference signal and DM- RS joint channel estimation can improve the channel estimation performance, which is beneficial to demodulating the first data information transmitted on the first uplink physical resource.
  • the method before receiving the DCI, the method further includes: receiving configuration information of a reference signal, where the configuration information is used to indicate that the reference signal is used for demodulating data.
  • the value M determines that the number M of frequency domain units occupied by the first DM-RS is less than the number N of frequency domain units of the first uplink physical resource. It can be beneficial to reduce the number of frequency domain units occupied by the DM-RS, improve the transmission power of the DM-RS, and ensure the reception performance of the DM-RS when the bandwidth of the first uplink physical resource is relatively large.
  • the value M determines that the number M of frequency domain units occupied by the first DM-RS is equal to the number N of frequency domain units of the first uplink physical resource. It can ensure that the bandwidth of the first uplink physical resource is relatively small, and the receiving performance of the DM-RS.
  • the pre-configured value may be pre-agreed or notified through signaling, and the pre-configured value may be related to the system bandwidth or the activated partial bandwidth (BWP), such as the system bandwidth or 1 / n of the BWP. , N takes an integer greater than 1.
  • the terminal device receives the second DCI, and the second DCI includes information about the second uplink physical resource in the third time period, and the third time period is after the first time period, and the second uplink physical resource is At least a part of the frequency domain unit of the frequency domain overlaps at least a part of the frequency domain unit of the first uplink physical resource; sending the second DM-RS and the second data information on the second uplink physical resource, and the frequency occupied by the second DM-RS The number of domain units is less than the number M of frequency domain units occupied by the first DM-RS.
  • the channel correlation within a period of time can be used in conjunction with the DM-RS of the previous period to perform joint channel estimation. , Further reducing the number of frequency domain units occupied by the DM-RS in the later period, which can further increase the transmission power of the DM-RS, and improve the demodulation of data information transmitted on the uplink physical resources in the later period. performance.
  • the terminal device has at least one time period between the first time period and the third time period, or all time periods, or K consecutive time periods, or cumulative K time periods DM-RS and data information are sent on the uplink physical resources, K is an integer greater than 1.
  • the terminal device sends DM-RS and data information on uplink physical resources in at least one time period between the first time period and the third time period, and the at least one time
  • the time interval between any two time periods among the time periods included in the first time period and the third time period is less than K, and K is an integer greater than or equal to 0.
  • an embodiment of the present invention provides a method for receiving information.
  • the method includes: a network device sends first downlink control information DCI, where the first DCI includes information about a first uplink physical resource in a first time period Receiving a first demodulation reference signal DM-RS and first data information sent by a terminal device on the first uplink physical resource, and receiving a reference signal in a second time period, the frequency occupied by the first DM-RS
  • the number M of domain units is less than or equal to the number N of frequency domain units of the first uplink physical resource, at least a part of the frequency domain unit occupied by the reference signal and at least a frequency domain unit of the first uplink physical resource Some overlap, and M and N are integers greater than or equal to 1.
  • the bandwidth of the DM-RS is smaller than the bandwidth of the first physical uplink resource, which can increase the transmission power of the DM-RS, especially for the terminal equipment at the cell edge, which can improve the reception performance of the DM-RS.
  • the reference signal and DM- RS joint channel estimation can improve the channel estimation performance, which is beneficial to demodulating the first data information transmitted on the first uplink physical resource.
  • the method before sending the DCI, further includes: sending configuration information of a reference signal, where the configuration information is used to indicate that the reference signal is used to demodulate data.
  • the value M determines that the number M of frequency domain units occupied by the first DM-RS is less than the number N of frequency domain units of the first uplink physical resource. It can be beneficial to reduce the number of frequency domain units occupied by the DM-RS, improve the transmission power of the DM-RS, and ensure the reception performance of the DM-RS when the bandwidth of the first uplink physical resource is relatively large.
  • the value M determines that the number M of frequency domain units occupied by the first DM-RS is equal to the number N of frequency domain units of the first uplink physical resource. It can ensure that the bandwidth of the first uplink physical resource is relatively small, and the receiving performance of the DM-RS.
  • the network device sends a second DCI, where the second DCI includes information about a second uplink physical resource in a third time period, and the third time period is after the first time period, so At least a part of the frequency domain unit of the second uplink physical resource overlaps with at least a part of the frequency domain unit of the first uplink physical resource; receiving a second DM-RS and second data information on the second uplink physical resource
  • the number of frequency domain units occupied by the second DM-RS is less than the number of frequency domain units M occupied by the first DM-RS.
  • the channel correlation within a period of time can be used in conjunction with the DM-RS of the previous period to perform joint channel estimation. , Further reducing the number of frequency domain units occupied by the DM-RS in the later period, which can further increase the transmission power of the DM-RS, and improve the demodulation of data information transmitted on the uplink physical resources in the later period. performance.
  • the network device has at least one time period between the first time period and the third time period, or all time periods, or K consecutive time periods, or cumulative K time periods Receive DM-RS and data information on the uplink physical resources, K is an integer greater than 1.
  • the network device receives DM-RS and data information on uplink physical resources in at least one time period between the first time period and the third time period, and the at least one time The time interval between any two time periods among the time periods included in the first time period and the third time period is less than K, and K is an integer greater than or equal to 0.
  • an embodiment of the present application provides a communication device.
  • the device includes: a processor and a transceiver coupled to the processor;
  • the processor is configured to receive first downlink control information DCI through the transceiver, where the first DCI includes information about a first uplink physical resource in a first time period; and the processor is further configured to pass the The transceiver sends a first demodulation reference signal DM-RS and first data information on the first uplink physical resource, and sends a reference signal in a second time period.
  • the frequency domain unit occupied by the first DM-RS The number M is less than or equal to the number N of frequency domain units of the first uplink physical resource, at least a part of the frequency domain unit occupied by the reference signal overlaps with at least a part of the frequency domain unit of the first uplink physical resource, M, N is an integer greater than or equal to 1.
  • the bandwidth of the DM-RS is smaller than the bandwidth of the first physical uplink resource, which can increase the transmission power of the DM-RS, especially for the terminal equipment at the cell edge, which can improve the reception performance of the DM-RS.
  • RS joint channel estimation can improve the channel estimation performance, which is beneficial to demodulating the first data information transmitted on the first uplink physical resource.
  • the processor before receiving the DCI, is further configured to receive configuration information of a reference signal through the transceiver, where the configuration information is used to indicate that the reference signal is used to demodulate data.
  • the processor is configured to determine whether the number N of frequency domain units of the first uplink physical resource is greater than or equal to a pre-configured value; if the frequency domain unit of the first uplink physical resource is The number N is greater than or equal to the pre-configured value, and it is determined that the number M of frequency domain units occupied by the first DM-RS is less than the number N of frequency domain units of the first uplink physical resource. It can be beneficial to reduce the number of frequency domain units occupied by the DM-RS, improve the transmission power of the DM-RS, and ensure the reception performance of the DM-RS when the bandwidth of the first uplink physical resource is relatively large.
  • the processor determines whether the number N of frequency domain units of the first uplink physical resource is less than or equal to a pre-configured value; if the number N of frequency domain units of the first uplink physical resource is It is less than or equal to a pre-configured value, and it is determined that the number M of frequency domain units occupied by the first DM-RS is equal to the number N of frequency domain units of the first uplink physical resource. It can ensure that the bandwidth of the first uplink physical resource is relatively small, and the receiving performance of the DM-RS.
  • the processor is configured to receive a second DCI through the transceiver, where the second DCI includes information about a second uplink physical resource in a third time period, and the third time period is in After the first time period, at least a part of the frequency domain unit of the second uplink physical resource overlaps with at least a part of the frequency domain unit of the first uplink physical resource; the processor is further configured to pass the The transceiver sends second DM-RS and second data information on the second uplink physical resource.
  • the number of frequency domain units occupied by the second DM-RS is less than the frequency occupied by the first DM-RS.
  • the channel correlation within a period of time can be used in conjunction with the DM-RS of the previous period to perform joint channel estimation. , Further reducing the number of frequency domain units occupied by the DM-RS in the later period, which can further increase the transmission power of the DM-RS, and improve the demodulation of data information transmitted on the uplink physical resources in the later period. performance.
  • the processor is configured to, through the transceiver, be at least one time period between the first time period and the third time period, or all time periods, or K consecutive times DM-RS and data information are sent on uplink physical resources in the time period or cumulative K time periods, where K is an integer greater than 1.
  • the processor is configured to send the DM-RS and the uplink physical resources on at least one time period between the first time period and the third time period through the transceiver.
  • Data information, and the time interval between any two of the at least one time period, the first time period and the third time period is less than K, and K is an integer greater than or equal to 0.
  • an embodiment of the present application provides a communication device.
  • the communication device includes a processor and a transceiver coupled to the processor.
  • the processor is configured to send first downlink control information DCI through the transceiver, where the first DCI includes information about a first uplink physical resource in a first period of time; and the processor is further configured to pass through the transceiver
  • the transceiver receives the first demodulation reference signal DM-RS and the first data information sent by the terminal device on the first uplink physical resource, and receives the reference signal in the second time period.
  • the number M of frequency domain units is less than or equal to the number N of frequency domain units of the first uplink physical resource, and at least a part of the frequency domain unit occupied by the reference signal is different from that of the frequency domain unit of the first uplink physical resource. At least a part of them overlap, and M and N are integers greater than or equal to 1.
  • the bandwidth of the DM-RS is smaller than the bandwidth of the first physical uplink resource, which can increase the transmission power of the DM-RS, especially for the terminal equipment at the cell edge, which can improve the reception performance of the DM-RS.
  • the reference signal and DM- RS joint channel estimation can improve the channel estimation performance, which is beneficial to demodulating the first data information transmitted on the first uplink physical resource.
  • the processor before sending the DCI, is configured to send configuration information of a reference signal through the transceiver, where the configuration information is used to indicate that the reference signal is used to demodulate data.
  • the processor is configured to determine whether the number N of frequency domain units of the first uplink physical resource is greater than or equal to a pre-configured value; if the frequency domain unit of the first uplink physical resource is And the number M is greater than or equal to the pre-configured value, and it is determined that the number M of frequency domain units occupied by the first DM-RS is less than the number N of frequency domain units of the first uplink physical resource. It can be beneficial to reduce the number of frequency domain units occupied by the DM-RS, improve the transmission power of the DM-RS, and ensure the reception performance of the DM-RS when the bandwidth of the first uplink physical resource is relatively large.
  • the processor is configured to determine whether the number N of frequency domain units of the first uplink physical resource is less than or equal to a pre-configured value; if the number of frequency domain units of the first uplink physical resource is N is less than or equal to a pre-configured value, and it is determined that the number M of frequency domain units occupied by the first DM-RS is equal to the number N of frequency domain units of the first uplink physical resource. It can ensure that the bandwidth of the first uplink physical resource is relatively small, and the receiving performance of the DM-RS.
  • the processor is configured to send a second DCI through the transceiver, where the second DCI includes information about a second uplink physical resource in a third time period, and the third time period is in After the first time period, at least a part of the frequency domain unit of the second uplink physical resource overlaps with at least a part of the frequency domain unit of the first uplink physical resource; the processor is further configured to pass the The transceiver receives second DM-RS and second data information on the second uplink physical resource, and the number of frequency domain units occupied by the second DM-RS is less than the frequency occupied by the first DM-RS The number M of domain units.
  • the channel correlation within a period of time can be used in conjunction with the DM-RS of the previous period to perform joint channel estimation. , Further reducing the number of frequency domain units occupied by the DM-RS in the later period, which can further increase the transmission power of the DM-RS, and improve the demodulation of data information transmitted on the uplink physical resources in the later period. performance.
  • the processor is configured to, through the transceiver, be at least one time period between the first time period and the third time period, or all time periods, or K consecutive times DM-RS and data information are received on uplink physical resources in the time period or cumulative K time periods, and K is an integer greater than 1.
  • the processor is configured to receive the DM-RS and the uplink physical resources on at least one time period between the first time period and the third time period through the transceiver.
  • Data information, and the time interval between any two of the at least one time period, the first time period and the third time period is less than K, and K is an integer greater than or equal to 0.
  • the frequency domain units occupied by the reference signal include frequency domain units of the first uplink physical resource that are not occupied by the first DM-RS. At least part of it.
  • the frequency domain unit occupied by the first DM-RS and the frequency domain unit occupied by the reference signal do not completely overlap, that is, At least part of the frequency domain units occupied by the reference signal does not include any frequency domain unit occupied by the first DM-RS, and / or at least part of the frequency domain exists in the frequency domain unit occupied by the first DM-RS The unit does not include any frequency-domain unit occupied by the reference signal.
  • the first DCI includes a reference signal trigger request, where the reference signal trigger request is used to instruct the reference signal to be sent in the second time period, And / or, the reference signal trigger request is used to indicate a frequency domain unit occupied by sending the reference signal in the second time period, and / or, the reference signal trigger request is used to indicate that A resource pattern (Pattern) used to send the reference signal over two time periods, and / or, the reference signal trigger request is used to instruct sending the first DM-RS, the first data information, and Spatial filtering information used by the reference signal is sent on a second time period.
  • the reference signal trigger request is used to instruct the reference signal to be sent in the second time period
  • the reference signal trigger request is used to indicate a frequency domain unit occupied by sending the reference signal in the second time period
  • the reference signal trigger request is used to indicate that A resource pattern (Pattern) used to send the reference signal over two time periods
  • the reference signal trigger request is used to instruct sending the first DM-RS, the first data information, and Spatial
  • the first time period and the second time period belong to the same time period, or the second time period is after the first time period.
  • the timing relationship between the first time period and the second time period is fixed in the protocol, or configured through high-level signaling, or carried through the first DCI.
  • the physical antenna port that sends the reference signal is the same as the physical antenna port that sends the first DM-RS, and / or, the reference signal is sent.
  • the precoding matrix used is the same as the precoding matrix used to send the first DM-RS, and / or the spatial filtering information of the reference signal is the same as the spatial filtering information of the first DM-RS, and / Or, the number of ports of the reference signal is the same as the number of ports of the first DM-RS, and the ports of the reference signal and the ports of the first DM-RS are mapped one by one.
  • the first DCI further includes first signaling, where the first signaling is used to indicate the number of frequency domain units M and 1 occupied by the first DM-RS. Frequency-domain positions, and / or the number of frequency-domain units and frequency-domain positions occupied by the reference signal.
  • the number M and the frequency domain positions of the frequency domain units occupied by the first DM-RS include: M from the lowest uplink frequency in the first uplink physical resource M consecutive frequency domain units from the highest frequency in the first uplink physical resource; M discrete frequency domain units in the first uplink physical resource; the first M consecutive frequency domain units starting from the lowest frequency plus the pre-configured frequency offset Offset; the first uplink physical resources starting from the highest frequency plus the pre-configured frequency offset Offset from the M consecutive frequency domain units In the frequency domain, Offset is a positive integer.
  • the frequency domain unit occupied by the reference signal is determined according to the frequency domain unit occupied by the first DM-RS; or the first DM-
  • the frequency domain unit occupied by the RS is determined according to the frequency domain unit occupied by the reference signal.
  • the first DCI further includes transmission layer number indication information, and the transmission layer number indication information is used to indicate data on the first uplink physical resource.
  • the number of ports of the reference signal is the same as the number of transmission layers indicated by the transmission layer number indication information.
  • the reference signal is a listening reference signal SRS.
  • an embodiment of the present application provides a computer-readable access medium for storing instructions.
  • the instructions When the instructions are run on a computer, the computer is caused to execute the methods in the foregoing aspects and possible designs.
  • an embodiment of the present application provides a communication device.
  • the device includes a processor and a memory coupled to the processor.
  • the memory is used to store instructions.
  • the processor is used to read and call the instructions.
  • an embodiment of the present application provides a computer program.
  • the computer program When the computer program is executed, the above-mentioned aspects and possible design methods can be executed.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a communication setting according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a communication method according to an embodiment of the present invention.
  • 4a is a schematic diagram of a physical resource structure according to an embodiment of the present invention.
  • 4b is a schematic diagram of an occupied time-frequency resource of an SRS according to an embodiment of the present invention.
  • FIG. 4c is a schematic diagram of time-frequency resources occupied by a DM-RS in a continuous period according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of another communication method according to an embodiment of the present invention.
  • GSM Global System
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • UMTS Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • the communication system includes a base station 101 and at least one terminal device.
  • two terminal devices are used as an example for description.
  • the two terminal devices are a terminal device 111 and a terminal device 112, respectively.
  • the terminal device 111 and The terminal device 112 is within the coverage of the base station 101 and communicates with the base station 101 to implement the technical solutions provided by the embodiments of the present application described below.
  • the base station 101 is a base station of an NR system
  • the terminal device 101 and the terminal device 102 are terminal devices of a corresponding NR system.
  • the embodiments of the present application describe various embodiments in combination with a network device and a terminal device.
  • the network device and the terminal device can work in a licensed frequency band or an unlicensed frequency band, among which:
  • Terminal equipment can also be called user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user Agent or user device.
  • Terminal equipment can be stations (STATION, ST) in Wireless Local Area Networks (WLAN), cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop (WLL) stations, Personal Digital Processing (PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, and next-generation communication systems, For example, terminal equipment in a fifth-generation (5G) network or terminal equipment in a future evolved Public Land Mobile Network (PLMN) network, terminal equipment in an NR system, and the like.
  • 5G fifth-generation
  • PLMN Public Land Mobile Network
  • the terminal device may also be a wearable device.
  • Wearable devices can also be referred to as wearable smart devices. They are the general name for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a device that is worn directly on the body or is integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also powerful functions through software support, data interaction, and cloud interaction.
  • Broad-spectrum wearable smart devices include full-featured, large-sized, full or partial functions that do not rely on smart phones, such as smart watches or smart glasses, and only focus on certain types of application functions, and need to cooperate with other devices such as smart phones Use, such as smart bracelets, smart jewelry, etc. for physical signs monitoring.
  • the network device may be a device for communicating with a mobile device.
  • the network device can be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, or an LTE Evolutional NodeB (eNB or eNodeB), or relay station or access point, or vehicle equipment, wearable device, and network equipment in future 5G networks or network equipment in future evolved PLMN networks, or in NR systems New generation base stations (new NodeB, gNodeB), etc.
  • Access Point Access Point
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • eNB LTE Evolutional NodeB
  • relay station or access point or vehicle equipment, wearable device, and network equipment in future 5G networks or network equipment in future evolved PLMN networks, or in NR systems New generation base stations (new NodeB, gNodeB), etc.
  • the network device provides a service to the cell, and the terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource or a spectrum resource) used by the cell.
  • the cell may be a cell corresponding to a network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell.
  • the small cells here may include: urban cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power. , Suitable for providing high-speed data transmission services.
  • the carriers in the LTE system or the NR system can have multiple cells working at the same frequency at the same time.
  • the above-mentioned carrier and cell concepts can be considered equivalent.
  • CA carrier aggregation
  • the concept of a carrier is the same as a cell.
  • a UE accessing a carrier and accessing a cell are equivalent.
  • High-level signaling may refer to signaling sent by a high-level protocol layer, and the high-level protocol layer is at least one protocol layer in each protocol layer above the physical layer.
  • the high-level protocol layer may be at least one of the following protocol layers: a medium access control (MAC) layer, a radio link control (RLC) layer, and a packet data convergence protocol (Packet Data Convergence). Protocol (PDCP) layer, Radio Resource Control (RRC) layer and Non Access Stratum (NAS) layer.
  • MAC medium access control
  • RLC radio link control
  • PDCP Packet Data Convergence Protocol
  • RRC Radio Resource Control
  • NAS Non Access Stratum
  • not in X includes any time on X, the starting time of X, and the ending time of X. "Not in X” may mean that there are no moments in X, or it may mean that there is no moment in one or more of the moments in X, which is not limited in this application.
  • time domain resource used herein generally refers to the first time domain resource, the second time domain resource, and the third time domain resource.
  • Frequency domain resource generally refers to a first frequency domain resource, a second frequency domain resource, and a third frequency domain resource.
  • FIG. 2 shows a wireless communication device according to an embodiment of the present invention.
  • the wireless communication device may be used as the network device 101 or an apparatus applied to the network device 101. The following uses the wireless communication device as the network device 101 as an example for description.
  • the network device 101 can execute the method provided by the embodiment of the present invention.
  • the network device 101 may include a processor 201 and a transceiver 202 for implementing a wireless communication function.
  • the processor 201 may be a modem processor.
  • the processor 201 may include a baseband processor (BBP).
  • BBP baseband processor
  • the baseband processor processes the digitized received signal to extract information or data bits carried in the signal.
  • the BBP is usually implemented in one or more digital signal processors (DSPs) within the processor 201 or by a separate integrated circuit (IC).
  • DSPs digital signal processors
  • the transceiver 202 may be configured to support transmitting and receiving information between the network device 101 and a terminal device.
  • the uplink radio frequency signal from the terminal device is received via the antenna, mediated by the transceiver 202, the baseband signal is extracted and output to the processor 201 for processing to restore the service data and / or information sent by the terminal device. ⁇ ⁇ Order information.
  • the baseband signal carrying the service data and / or signaling messages to be sent to the terminal device is modulated by the transceiver 202 to generate a downlink radio frequency signal and transmitted to the UE via the antenna.
  • the transceiver 202 may include independent receiver and transmitter circuits, or may be integrated in the same circuit to implement a transceiver function.
  • the network device 101 may further include a memory 203, which may be used to store program code and / or data of the network device 101.
  • the network device 101 may further include a communication unit 204 for supporting the network device 101 to communicate with other network entities.
  • the network device 101 is configured to support communication between the network device 101 and a network device of a core network.
  • the processor 201 may be coupled / connected to the transceiver 202, the memory 203, and the communication unit 204, respectively.
  • the network device 101 may further include a bus.
  • the transceiver 202, the memory 203, and the communication unit 204 may be connected to the processor 201 through a bus.
  • the bus may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, or the like.
  • the bus may include an address bus, a data bus, a control bus, and the like.
  • FIG. 3 shows another wireless communication device provided by an embodiment of the present invention.
  • the wireless communication device can be used as a terminal device 111-112 or a device applied to the terminal devices 111-112. The following uses the wireless communication device shown in FIG. 3 as a terminal device for description.
  • the terminal device can execute the method provided by the embodiment of the present invention.
  • the terminal device may be any one of the two terminal devices 111 to 112.
  • the terminal device includes a transceiver 301, a memory 303, and a processor 304 for implementing a wireless communication function.
  • the transceiver 301 may be used to support the transmission and reception of information between the terminal devices 111 to 112 and the network device 101.
  • the downlink radio frequency signals from the network equipment are received via the antenna, mediated by the transceiver 301, the baseband signal is extracted and output to the processor 304 for processing to restore the service data and / or information sent by the network equipment ⁇ ⁇ Order information.
  • the baseband signal carrying the service data and / or signaling messages to be sent to the network device is modulated by the transceiver 301 to generate an uplink radio frequency signal and transmitted to the network device via the antenna.
  • the transceiver 301 may include independent receiver and transmitter circuits, or may be integrated in the same circuit to implement a transceiver function.
  • the processor 304 may be a modem processor.
  • the processor 304 may include a baseband processor (BBP), which processes the digitized received signal to extract information or data bits carried in the signal.
  • BBP is typically implemented in one or more digital signal processors (DSPs) within the processor 304 or by a separate integrated circuit (IC).
  • DSPs digital signal processors
  • the processor 304 may include an encoder 3041, a modulator 3042, a decoder 3043, and a demodulator 3044.
  • the encoder 3041 is configured to encode a signal to be transmitted.
  • the encoder 3041 may be used to receive service data and / or signaling messages to be sent on the uplink, and process (e.g., format, encode, or interleave, etc.) the service data and signaling messages.
  • the modulator 3042 is configured to modulate an output signal of the encoder 3041.
  • the modulator may perform symbol mapping and / or modulation on the output signals (data and / or signaling) of the encoder, and provide output samples.
  • the demodulator 3044 is used for demodulating the input signal. For example, the demodulator 3044 processes the input samples and provides symbol estimates.
  • the decoder 3043 is configured to decode the demodulated input signal. For example, the decoder 3043 deinterleaves and / or decodes the demodulated input signal, and outputs the decoded signal (data and / or signaling).
  • the processor 304 receives digitized data that can represent voice, data, or control information, and processes the digitized data for transmission.
  • the processor 304 may support one or more of multiple wireless communication protocols of multiple communication systems, such as a Long Term Evolution (LTE) communication system, a New Radio (NR), and a universal mobile communication system ( Universal Mobile Telecommunications System (UMTS), High Speed Packet Access (HSPA) and so on.
  • LTE Long Term Evolution
  • NR New Radio
  • UMTS Universal Mobile Telecommunications System
  • HSPA High Speed Packet Access
  • the processor 304 may also include one or more memories.
  • the terminal device may further include an application processor 302 for generating the above-mentioned digitized data that can represent voice, data, or control information.
  • the processor 304 and the application processor 302 may be integrated in one processor chip.
  • the memory 303 is configured to store program code (sometimes also referred to as a program, an instruction, software, etc.) and / or data for supporting communication of the terminal device.
  • program code sometimes also referred to as a program, an instruction, software, etc.
  • the memory 203 or the memory 303 may include one or more storage units.
  • the memory 203 or the memory 303 may be a storage unit inside the processor 201 or the processor 304 or the application processor 302 for storing program code, or may be
  • the processor 201 or the processor 304 or the application processor 302 is an independent external storage unit, or may also be a storage unit including the processor 201 or the processor 304 or the application processor 302 and the processor 201 or the processor 304 or the application.
  • the processor 302 is a component of an independent external storage unit.
  • the processor 201 and the processor 304 may be the same type of processor, or may be different types of processors. For example, it can be implemented in a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), and a field programmable gate array (ASIC). Field Programmable Gate Array (FPGA) or other programmable logic devices, transistor logic devices, hardware components, other integrated circuits, or any combination thereof.
  • the processor 201 and the processor 304 may implement or execute various exemplary logical blocks, modules, and circuits described in connection with the disclosure of the embodiments of the present invention.
  • the processor may also be a combination of devices that implement computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, or a system-on-a-chip (SOC).
  • a network device 101 as a network device and a terminal device 111 as an example.
  • the frequency domain unit in this application may be a physical resource block (PRB), or a resource block group (RBG), or a subcarrier, or another frequency domain unit.
  • PRB physical resource block
  • RBG resource block group
  • subcarrier or another frequency domain unit.
  • FIG. 4 is a schematic flowchart of an information sending method. The embodiment shown in FIG. 4 includes the following steps:
  • the network device 101 sends configuration information of the reference signal to the terminal device 111, and the configuration information is used to indicate that the reference signal is used for demodulating data.
  • the terminal device receives the configuration information of the reference signal from the network device.
  • the reference signal may be a sounding reference signal (SRS), a phase tracking reference signal, or another uplink reference signal, which is not limited in the present invention.
  • SRS sounding reference signal
  • phase tracking reference signal phase tracking reference signal
  • another uplink reference signal which is not limited in the present invention.
  • SRS sounding reference signal
  • phase tracking reference signal phase tracking reference signal
  • uplink reference signal uplink reference signal
  • S401 is optional.
  • the SRS may be fixedly configured in the protocol for demodulating data.
  • the operation of the network device 101 in S401 may be performed by the transceiver 202, or performed by the processor 201 through the transceiver 202.
  • the operations of the terminal device 111 in S401 may be performed by the transceiver 301, or performed by the processor 304 through the transceiver 301.
  • the configuration information may be included in high-level signaling, and the high-level signaling may be MAC layer signaling, RLC layer signaling, PDCP layer signaling, or RRC layer signaling, which is not limited in the present invention.
  • the high-level signaling may be terminal-specific high-level signaling, may be cell-specific high-level signaling, or may be high-level signaling shared by a group of terminal equipment, which is not limited in the present invention.
  • the configuration information can also be fixed in the protocol. This embodiment of the present invention is described by using an example in which the high-level signaling is RRC layer signaling.
  • the SRS configuration information in RRC signaling includes SRS functions.
  • the SRS function is used for non-codebook uplink transmission, used for codebook uplink transmission, used for beam management, and used for antenna polling.
  • the configuration parameters of the SRS resources corresponding to each function and the SRS transmission method are different.
  • the SRS configuration information includes SRS resource configuration information. Specifically, for example, the number of ports of the SRS resource, the number of OFDM symbols occupied and the time domain position, the frequency hopping bandwidth of the SRS, the maximum frequency hopping domain bandwidth of the SRS, a cyclic shift code (CS), and a transmission comb ( Transmission Comb), sequence index value (sequence ID), transmission beam information, etc.
  • SRS resource configuration information For example, the number of ports of the SRS resource, the number of OFDM symbols occupied and the time domain position, the frequency hopping bandwidth of the SRS, the maximum frequency hopping domain bandwidth of the SRS, a cyclic shift code (CS), and a transmission comb ( Transmission Comb), sequence index value (sequence ID), transmission beam information, etc.
  • the function of the SRS may be configured for demodulation, which is different from the above-mentioned function.
  • the network device 101 may use the DM-RS associated with the PUSCH and the SRS for demodulation to perform channel estimation.
  • more time-frequency domain resources can be used for channel estimation, which can effectively improve channel estimation performance, thereby ensuring PUSCH decoding performance.
  • the network device 101 sends first downlink control information (Downlink Control Information) to the terminal device 111.
  • the terminal device 111 receives the DCI.
  • the operation of the network device 101 in S402 may be performed by the transceiver 202, or performed by the processor 201 through the transceiver 202.
  • the operations of the terminal device 111 in S402 may be performed by the transceiver 301, or performed by the processor 304 through the transceiver 301.
  • the first DCI includes information of a first uplink physical resource in a first time period.
  • the length of the first time period may be the length of a scheduling time unit.
  • the length of the first time period may be the length of a subframe, the length of a slot, or a mini time slot. (Mini-Slot) length, or the length of a Transmission Time Interval (TTI), or the length including X OFDM symbols (OFDM, Symbol, OS for short), X is a positive integer, or the length of other time units
  • TTI Transmission Time Interval
  • X OFDM symbols
  • the position of the first time period may be referenced to a time period in which the first DCI is detected, and an n-th time period starting from a time period in which the first DCI is detected is determined as the first time period.
  • the present invention is not limited, and the following takes the length of the first time period as an example for description.
  • the information of the first uplink physical resource may include the number N of frequency domain units occupied by the first uplink physical resource, where N is an integer greater than or equal to 1.
  • the information of the first uplink physical resource may further include a frequency domain position of a frequency domain unit of the first uplink physical resource. For example, which PRBs are in the frequency domain unit occupied by the first uplink physical resource. For example, as shown in FIG. 5, suppose a slot includes 14 OSs, which are respectively identified by OS0 to OS13.
  • the first uplink physical resource includes a PUSCH resource and / or a PUCCH resource.
  • the invention is not limited. The following description uses PUSCH resources as an example.
  • PUSCH scheduling there are two types of PUSCH scheduling: centralized scheduling (PUSCH occupies continuous PRBs) and distributed scheduling (PUSCH occupies non-continuous PRBs).
  • PUSCH occupies continuous PRBs
  • distributed scheduling PUSCH occupies non-continuous PRBs.
  • DFT-s-OFDM Discrete, Fourier, Transform-Spread, OFDM
  • a centralized scheduling method is usually used to schedule cell-edge users to improve the transmit power utilization.
  • the bandwidth occupied by the DM-RS is M PRBs to ensure the performance of the DM-RS channel estimation and ensure the Demodulation performance of PUSCH.
  • the starting position of the M PRBs occupied by the DM-RS is the starting position of the bandwidth occupied by the PUSCH, such as FIG. 4a, which can ensure that the sending bandwidth of the SRS used to supplement the bandwidth occupied by the DM-RS is continuous.
  • the bandwidth occupied by the DM-RS is the same as the bandwidth occupied by the corresponding PUSCH.
  • the bandwidth occupied by the RS is smaller than the bandwidth occupied by the corresponding PUSCH.
  • the bandwidth occupied by the DM-RS is M PRBs and the continuous PRBs in the M frequency domain are occupied to ensure the DM-RS channel
  • the estimated performance thus ensures the demodulation performance of the PUSCH associated with the DM-RS.
  • the bandwidth occupied by the DM-RS is the same as the bandwidth occupied by the corresponding PUSCH.
  • the number of frequency domain units M and / or the frequency domain position occupied by the first DM-RS may be a fixed value in the protocol, or may be sent by the network device 101 to the terminal device 111 through signaling, where the signaling may be In high-level signaling, the high-level signaling may be MAC layer signaling, RLC layer signaling, PDCP layer signaling, or RRC layer signaling, which is not limited in the present invention.
  • the high-level signaling may be UE-specific high-level signaling, may be cell-specific high-level signaling, or may be high-level signaling shared by a group of terminal devices, which is not limited in the present invention.
  • the signaling can be physical layer control signaling.
  • the physical layer control signaling can be terminal equipment specific signaling, cell-specific signaling, or signaling shared by a group of terminal equipment. limit.
  • M represents the maximum bandwidth configured for the terminal device 111 to send the DM-RS.
  • M 8
  • the first DCI may include first signaling, where the first signaling is used to indicate the number M and / or frequency domain locations of the frequency domain units occupied by the first DM-RS, where M is an integer greater than or equal to 1. Among them, M is smaller than N.
  • the number M of frequency domain units may be a member of a set of a number of frequency domain units configured in advance, and the set may include one or more members.
  • the above set may be a fixed set in the protocol, or may be sent by the network device 101 to the terminal device 11 through signaling.
  • the specific signaling may be the signaling in step 402 or other signaling, which is not limited in the present invention.
  • the first DCI may include first signaling
  • the first signaling is used to indicate the number M and / or the frequency domain position of the frequency domain unit occupied by the first DM-RS
  • the first signaling is used to indicate The relationship between the value of the field M of the frequency domain unit occupied by the first DM-RS and the number N of the frequency domain units occupied by the PUSCH associated with the first DM-RS.
  • the association relationship includes the position relationship of the frequency domain unit occupied by the first DMRS and the position of the frequency domain unit occupied by the associated PUSCH, for example, the occupation starts from the frequency domain unit with the lowest index value (or the lowest frequency) occupied by the PUSCH.
  • the M index values at the beginning of the occupied frequency domain unit are sequentially increased or decreased in the frequency domain unit, or M frequency domain resources with the same spacing between the start and end positions of the frequency domain of the PUSCH are occupied.
  • the association relationship may further include a relationship between the number of frequency domain units occupied by the first DMRS and the number of frequency domain units occupied by the associated PUSCH, such as occupying 1/2 or 1/4 of the frequency domain units occupied by the PUSCH.
  • the association relationship may also include both the quantity relationship and the position relationship.
  • Specific indication method For example, the first signaling includes 2 bits for indicating the number M of frequency domain units occupied by the first DM-RS, where "00" indicates the frequency domain units occupied by the first DM-RS
  • the above-mentioned association relationship between M and N may be referred to as a DM-RS pattern.
  • the present invention does not limit the specific number of bits and the association between the specific value and M and N.
  • the corresponding relationship between the value of the DM-RS Pattern and / or a field indicating the number of frequency domain units M occupied by the first DM-RS and the DM-RS Pattern may be fixed in the protocol or may be
  • the network device 101 sends the signaling to the terminal device 111 through signaling.
  • the signaling may be high-level signaling, and the high-level signaling may be MAC layer signaling, RLC layer signaling, PDCP layer signaling, or RRC layer signaling.
  • the invention is not limited.
  • the high-level signaling may be terminal-specific high-level signaling, may be cell-specific high-level signaling, or may be high-level signaling shared by a group of terminal equipment, which is not limited in the present invention. Or the signaling can be physical layer control signaling.
  • the physical layer control signaling can be terminal equipment specific signaling, cell specific signaling, or signaling shared by a group of terminal equipment, which is not limited in the present invention.
  • the frequency domain units occupied by the PUSCH are PRB10-PRB21, DM-RS occupy PRB10-PRB12, and PRB19-PRB21.
  • the network device 101 can perform frequency domain filtering to directly demodulate data on the bandwidth occupied by the entire PUSCH. At this time, the efficiency of uplink data demodulation can be improved.
  • the frequency domain position of the frequency domain resource occupied by the first DM-RS may be M consecutive frequency domain units from the lowest frequency in the first uplink physical resource.
  • the frequency domain position of the frequency domain resource occupied by the first DM-RS may be M consecutive frequency domain units of the first uplink physical resource starting from the lowest frequency plus a pre-configured frequency offset Offset; the first The uplink physical resources are M consecutive frequency domain units starting from the highest frequency plus a pre-configured frequency offset Offset, where Offset is a positive integer.
  • the frequency domain position of the frequency domain resource occupied by the first DM-RS may be a member of a set of frequency domain positions of a preconfigured frequency domain unit, and the set may include one or more members.
  • the set of frequency-domain positions of the pre-configured frequency-domain units includes ⁇ M1 continuous frequency-domain units starting from the lowest frequency, M1 continuous frequency-domain units starting from the highest frequency, M1 discrete frequency-domain units, and the lowest frequency M2 consecutive frequency domain units at the beginning, M2 consecutive frequency domain units at the highest frequency, M2 discrete frequency domain units, M3 consecutive frequency domain units starting at the lowest frequency, and M3 consecutive frequency units starting at the highest frequency Frequency domain unit, M3 discrete frequency domain units ⁇ .
  • the above set of frequency domain positions may be a fixed set in the protocol, or may be sent by the network device 101 to the terminal device 11 through signaling.
  • the specific signaling may be the signaling in step 402 or other signaling.
  • the channel quality (such as SINR) on different subbands of the PUSCH carried in the first time period is greatly different, and the most preferred The precoding matrix is different.
  • the DM-RS / PUSCH precoding indication information corresponds to the entire PUSCH scheduling bandwidth, that is, different subbands carrying the PUSCH correspond to the same precoding matrix.
  • the selection of the precoding matrix is such that the PUSCH is carried.
  • the performance of all subbands is as average as possible. This brings the problem that for some subbands, the precoding matrix is not optimal, which will greatly affect the transmission performance of PUSCH on these subbands, so
  • the DMRS may occupy only a part of the subband occupied by the PUSCH so that the precoding matrix is optimal for the part of the subband.
  • the first DM-RS is associated with the first uplink physical resource, that is, the first DM-RS is used for channel estimation to decode the first data information sent on the first uplink physical channel.
  • the first DM-RS is located in a first time period.
  • the first DCI may further include an SRS trigger request.
  • the SRS trigger request is used to indicate that the SRS is sent in the second time period, and / or, the SRS trigger request is used to indicate the frequency domain unit (that is, the SRS resource) occupied by sending the SRS in the second time period, and / or,
  • the SRS trigger request is used to indicate the resource pattern (Pattern) used to send the SRS in the second time period, and / or, the SRS trigger request is used to indicate the first DM-RS, the first data information, and the second time period. Sending the spatial filtering information used by the SRS.
  • the SRS is associated with the first uplink physical resource, that is, it is used to perform channel estimation to decode the first data information sent on the first uplink physical resource.
  • the second time period may be the same time period as the first time period, or the second time period may be located before the first time period, or the second time period may be located after the first time period, which is not limited in the present invention,
  • the timing relationship between the second time period and the first time period may be fixed in the protocol, or may be sent by the network device 101 to the terminal device 111 through signaling.
  • the signaling may be high-level signaling, and the high-level signaling may be It is MAC layer signaling, RLC layer signaling, PDCP layer signaling, or RRC layer signaling, which is not limited in the present invention.
  • the high-level signaling may be terminal-specific high-level signaling, may be cell-specific high-level signaling, or may be high-level signaling shared by a group of terminal equipment, which is not limited in the present invention.
  • the signaling can be physical layer control signaling.
  • the physical layer control signaling can be terminal equipment specific signaling, cell specific signaling, or signaling shared by a group of terminal equipment, which is not limited in the present invention. .
  • the timing relationship may be a time offset, and the network device 101 may notify the terminal device by carrying the time offset information in the first DCI.
  • the SRS and the first DM-RS are in the same slot, that is, the second time period is the same time period as the first time period.
  • At least a part of the frequency domain unit of the SRS resource overlaps with at least a part of the frequency domain unit of the first uplink physical resource.
  • the first uplink physical resource may include all frequency domain units occupied by the SRS, or the first uplink physical resource may include some frequency domain units occupied by the SRS, which is not limited in the present invention.
  • FIG. 4a the SRS and the first DM-RS are in the same slot, that is, the second time period is the same time period as the first time period.
  • At least a part of the frequency domain unit of the SRS resource overlaps with at least a part of the frequency domain unit of the first uplink physical resource.
  • the first uplink physical resource may include all frequency domain units occupied by the SRS
  • the frequency domain units PRB10 to PRB19 occupied by the first uplink physical resource, and the frequency domain units occupied by the SRS are PRB16 to PRB19.
  • the frequency domain units PRB10 to PRB19 occupied by the first uplink physical resource, and the frequency domain units occupied by the SRS are PRB16 to PRB23.
  • at least a part of the frequency domain unit occupied by the SRS is different from at least a part of the frequency domain unit occupied by the resources of the first DM-RS. For example, as shown in FIG.
  • the frequency domain units occupied by the first uplink physical resource are PRB10 to PRB19
  • the frequency domain units occupied by the first DM-RS are PRB10 to PRB13
  • the frequency domain units occupied by the SRS are PRB16 to PRB19.
  • the frequency domain units PRB10 to PRB19 occupied by the first uplink physical resource, the frequency domain units occupied by the first DM-RS are PRB10 to PRB13
  • the frequency domain units occupied by the SRS are PRB12 to PRB15.
  • the frequency domain units PRB10 to PRB19 occupied by the first uplink physical resource, the frequency domain units occupied by the first DM-RS are PRB10 to PRB13, and the frequency domain units occupied by the SRS are PRB10 to PRB15.
  • the frequency domain unit of the SRS resource includes a part of the frequency domain unit of the first uplink physical resource that is not occupied by the first DM-RS.
  • the frequency domain unit occupied by the SRS includes at least a part of the frequency domain units of the first uplink physical resource that are not occupied by the first DM-RS.
  • channel information of more frequency domain units in the frequency domain unit of the first uplink physical resource can be obtained, which is helpful for solution Tune the first data information transmitted on the first uplink physical resource.
  • the frequency domain unit occupied by the first DM-RS and the frequency domain unit occupied by the SRS do not completely overlap, that is, at least part of the frequency domain units in the frequency domain unit occupied by the SRS do not include the first DM-RS Any frequency domain unit occupied, for example, the frequency domain unit occupied by the first SRS is PRB10 to PRB15, and the frequency domain unit occupied by the first DM-RS is PRB13 to PRB16, then PRB10 to PRB12 do not include the first DM-RS Any frequency-domain unit occupied.
  • the frequency domain units occupied by the first SRS are PRB10 to PRB15, and the frequency domain units occupied by the first DM-RS are PRB13 to PRB15, so PRB10 to PRB12 do not include any frequency domain occupied by the first DM-RS unit. And / or, at least some of the frequency domain units occupied by the first DM-RS do not include any frequency domain units occupied by the SRS.
  • the frequency domain unit occupied by the SRS has the same meaning as the frequency domain unit of the SRS resource.
  • the resource pattern used by the SRS resource may be predefined, for example, the SRS only occupies the complement of the frequency domain unit occupied by the first DM-RS and the frequency domain unit occupied by the PUSCH. It can also be configured through high-level signaling. For example, high-level signaling can configure the number and position of frequency domain units occupied by SRS and the corresponding frequency hopping bandwidth.
  • the frequency hopping bandwidth is the frequency domain occupied by SRS in each OFDM symbol.
  • the number of units, or the relative value of the number and position of frequency domain units occupied by SRS and the number and position of frequency domain units occupied by PUSCH for example, the number of frequency domain units occupied by SRS is the frequency domain occupied by PUSCH
  • the start position of the frequency domain unit occupied by the SRS is 1/2, 1/4, etc. of the number of units, and the start position or the end position of the frequency domain unit occupied by the PUSCH. It is also possible to configure the absolute value of the number of frequency domain units occupied by multiple SRSs and the position or the relative value with respect to PUSCH through high-level signaling, which is the resource pattern of multiple SRSs. Selecting one of the SRS resource patterns to determine the SRS resource pattern.
  • the number of frequency domain units (or transmission bandwidth) occupied by the first DM-RS is less than that of the first uplink physical resource.
  • the number of frequency domain units (or transmission bandwidth) occupied by the SRS may be determined according to the first uplink physical resource or further based on the frequency domain units occupied by the first DM-RS. If the first DCI does not include an SRS trigger request and the SRS trigger request triggers SRS resources for data demodulation, the number of frequency domain units occupied by the first DM-RS and the number of frequency domain units of the first uplink physical resource the same.
  • the number of frequency domain units occupied by the further SRS is determined based on the number of frequency domain units of the first uplink physical resource and the number of frequency domain units occupied by the first DM-RS associated therewith.
  • whether the first DCI includes an SRS trigger request that triggers SRS resources used for data demodulation is determined by the number N of frequency domain units of the first uplink physical resource. For example, if N is less than the pre-configured value, the SRS trigger request that triggers the SRS resource for data demodulation is not included. If N is greater than or equal to the pre-configured value, the SRS trigger request that triggers the SRS resource for data demodulation is not included. SRS triggers the request.
  • the pre-configured value may be a fixed value in the protocol, or may be sent by the network device 101 to the terminal device 111 through signaling.
  • the signaling may be high-level signaling, and the high-level signaling may be MAC layer signaling.
  • the high-level signaling may be terminal-specific high-level signaling, may be cell-specific high-level signaling, or may be high-level signaling shared by a group of terminal equipment, which is not limited in the present invention.
  • the signaling can be physical layer control signaling.
  • the physical layer control signaling can be terminal equipment specific signaling, cell specific signaling, or signaling shared by a group of terminal equipment, which is not limited in the present invention. .
  • the number and / or frequency domain position of the frequency domain units occupied by the SRS, the number of OFDM symbols occupied and / or the position of the OFDM symbols, and the SRS frequency hopping bandwidth can be configured through high-level signaling such as RRC signaling .
  • the start position of the frequency domain unit occupied by the SRS is the start position of the PUSCH frequency domain unit that does not include the DM-RS associated with the PUSCH, so that the network device performs the frequency domain of the unbearable DM-RS based on the SRS Channel estimation on the unit.
  • the number of frequency domain units (or transmission bandwidth) occupied by the SRS may also be determined according to the resource pattern of the SRS configured by the base station through high-level signaling, as described above, or according to the SRS indicated by the base station through the first DCI The resource pattern is OK.
  • the first signaling is used to indicate the number P of frequency domain units occupied by the SRS, where P is an integer greater than or equal to 1.
  • P is an integer greater than or equal to 1.
  • the first DCI may further include transmission layer number indication information, where the transmission layer number indication information is used to indicate the number of data transmission layers on the first uplink physical resource, and the number of SRS ports and the transmission layer The number of transmission layers indicated by the number indication information is the same. Further, each port of the SRS corresponds to each transport layer, that is, the precoding matrix corresponding to each SRS port is the same as the precoding matrix corresponding to each transport layer. The transmission layer number indication information is also used to indicate the port number of the first DM-RS. Further, the first DCI further includes DM-RS port indication information, and the DM-RS port indication information is used to indicate the first Port number of the DM-RS.
  • each SRS corresponds to the port of each first DM-RS, that is, the number of ports of the SRS is the same as the number of ports of the first DM-RS, and each SRS port corresponds
  • the precoding matrix is the same as the precoding matrix corresponding to each DM-RS port.
  • the first signaling is used to indicate a frequency domain position of a frequency domain unit occupied by the SRS.
  • the specific manner is similar to indicating the frequency domain position of the frequency domain unit occupied by the first DM-RS, which is not limited herein.
  • the number of frequency domain units P occupied by the SRS and / or the frequency domain positions of the frequency domain units occupied by the SRS may be carried in step S401.
  • the network device or the terminal device may determine the frequency domain unit occupied by the first DM-RS according to the frequency domain unit of the SRS resource; or may determine the frequency of the SRS resource according to the frequency domain unit occupied by the first DM-RS. Domain unit.
  • the SRS may occupy one time domain unit in the second time period, or occupy multiple time domain units in the second time period.
  • the invention is not limited.
  • the second time period is a slot
  • the slot contains 14 OSs
  • a time domain unit is equivalent to an OS.
  • the SRS occupies multiple time domain units
  • the frequency domain units occupied by the SRS on different time domain units may be different.
  • the specific occupation of several OSs and / or which OSs may be fixed in the protocol or notified to the terminal device through signaling. For specific signaling notification, reference may be made to the configuration of other parameters in the embodiments of the present invention, and details are not described again.
  • the precoding used by the first DM-RS and the precoding used by the SRS may be different, and the uplink data transmitted on the first uplink physical resource may use both the precoding of the first DM-RS and the precoding of the SRS. coding.
  • the same uplink data on the first uplink physical resource as the frequency domain unit occupied by the first DM-RS uses the same precoding as the first DM-RS
  • the first uplink physical resource is The uplink data of the same frequency domain unit occupied by the SRS uses the same precoding as the SRS; or, assuming that there are N OSes in the first time period, the uplink data transmitted on the first N / 2 OSes is the same as the first DM-RS
  • the same precoding, the uplink data transmitted on the last N / 2 OSes uses the same precoding as the SRS. In this way, the spatial diversity gain can be improved.
  • the terminal device 111 sends the first data information and the first DM-RS to the network device 101 on the first uplink physical resource in the first time period.
  • the terminal device 111 sends the SRS in the second time period. Specifically, the terminal device 111 sends the SRS on the frequency domain unit and the time domain unit occupied by the SRS in the second time period.
  • the operation of the network device 101 in S403 may be performed by the transceiver 202, or performed by the processor 201 through the transceiver 202.
  • the operations of the terminal device 111 in S403 may be performed by the transceiver 301, or performed by the processor 304 through the transceiver 301.
  • the terminal device 111 sends the first DM-RS using the time domain unit in the first time period occupied by the first DM-RS, and the terminal device 111 uses the time when the first uplink physical resource is not occupied by the first DM-RS.
  • the first data message is sent on the domain unit. For example, as shown in FIG. 4a, assuming that the first time period is the same as the second time period, the frequency domain units PRB10 to PRB19 occupied by the first uplink physical resource are the time domain units occupied by the first time period (time slot).
  • the frequency domain units occupied by the first DM-RS are PRB10 to PRB13
  • the time domain units occupied are OS0 in the first time period (time slot)
  • the frequency domain units occupied by the SRS are PRB16 to PRB19.
  • the domain unit is OS13 in the first time period (time slot)
  • the terminal device 111 uses the frequency domain units PRB10 to PRB19 in the first time period, and the time domain units OS1 to OS12 send the first data information.
  • the frequency domain units PRB10 to PRB19 occupied by the first uplink physical resource are the OS0 to OS3 of the first time period (time slot).
  • the frequency domain units occupied by a DM-RS are PRB10 to PRB13, the time domain units occupied are OS0 in the first time period (time slot), the frequency domain units occupied by SRS are PRB16 to PRB19, and the time domain units occupied are second In the time zone (time slot) of OS13, the terminal device 111 uses the frequency domain units PRB10 to PRB19 in the first time zone, and the time domain units OS1 to OS13 send the first data information.
  • the first data information may be user data, or buffer status information, or high-level signaling information, such as RRC layer signaling.
  • the present invention does not limit the content and type of the first data information.
  • the terminal device 111 or the network device 101 determines whether the number N of the frequency domain units of the first uplink physical resource is greater than or equal to a pre-configured value. If N is greater than or equal to the pre-configured value, the terminal device 111 or the network device 101 determines that M ⁇ N.
  • the pre-configured value may be a fixed value in the protocol, or may be sent by the network device 101 to the terminal device 111 through signaling.
  • the signaling may be high-level signaling, and the high-level signaling may be MAC layer signaling. , RLC layer signaling, PDCP layer signaling, or RRC layer signaling, the present invention is not limited.
  • the high-level signaling may be UE-specific high-level signaling, may be cell-specific high-level signaling, or may be high-level signaling shared by a group of terminal devices, which is not limited in the present invention.
  • the signaling can be physical layer control signaling.
  • the physical layer control signaling can be terminal equipment specific signaling, cell specific signaling, or signaling shared by a group of terminal equipment, which is not limited in the present invention. .
  • the operations of the network device 101 may be performed by the processor 201.
  • the operations of the terminal device 111 in S402 may be performed by the processor 304.
  • the physical antenna port that sends the SRS is the same as the physical antenna port that sends the first DM-RS, and / or the precoding matrix used to send the SRS is the same as the precoding matrix used to send the first DM-RS, And / or, the spatial filtering information of the SRS is the same as the spatial filtering information of the first DM-RS, and / or, the number of ports of the SRS is the same as that of the first DM-RS, and the ports of the SRS are the same as the first DM -RS ports are mapped one by one.
  • the first DCI includes indication information of the number of transmission layers. Each port of the SRS corresponds to each transmission layer.
  • the precoding matrix corresponding to each SRS port is the same as the precoding matrix corresponding to each transmission layer. It means that the physical antenna port of the same terminal device is used to send each SRS port and the data of each transport layer, and the phase weights (co-phasing) between the physical antenna ports are the same.
  • the transmission layer number indication information is also used to indicate the port number of the first DM-RS.
  • the first DCI further includes DM-RS port indication information, and the DM-RS port indication information is used to indicate the first Port number of the DM-RS.
  • each SRS corresponds to the port of each first DM-RS, that is, the number of ports of the SRS is the same as the number of ports of the first DM-RS, and each SRS port corresponds
  • the precoding matrix is the same as the precoding matrix corresponding to each DM-RS port.
  • the transmission beam (spatial filtering information) used to send the first DM-RS and corresponding uplink data may also be notified through the first DCI, and the transmission beam (spatial filtering information) used to send the SRS may also be used. The transmission beam notified by the first DCI.
  • the network device 101 sends a second DCI to the terminal device 111.
  • the terminal device 111 receives the second DCI.
  • Step S404 is optional.
  • the operation of the network device 101 in S404 may be performed by the transceiver 202, or performed by the processor 201 through the transceiver 202.
  • the operation of the terminal device 111 in S404 may be performed by the transceiver 301, or performed by the processor 304 through the transceiver 301.
  • the second DCI includes information of the second uplink physical resource in the third time period.
  • the meaning of the third time period is similar to that of the first time period, and details are not described herein.
  • the meaning of the information of the second uplink physical resource is similar to that of the information of the first uplink physical resource, and details are not described herein.
  • the third time period is after the first time period, for example, the third time period is a time period adjacent to the first time period after the first time period.
  • the third time period is after the first time period and is separated from the first time period by Y time periods.
  • the frequency domain unit of the second uplink physical resource overlaps with at least a part of the frequency domain unit of the first uplink physical resource.
  • the first time period is time period n
  • the third time period is time period n + 3
  • the PRB (PRB10 to PRB19) indicated by the filled box in the first time period is the first In the frequency domain unit of the uplink physical resource
  • the PRB (PRB11 to PRB17) indicated by the filled box in the third time period is the frequency domain unit of the second uplink physical resource
  • the filled box in the time period n + 1 indicates PRB is the frequency domain unit of the uplink physical resource on time period n + 1
  • the PRB indicated by the filled box in time period n + 2 is the frequency domain unit of the uplink physical resource on time period n + 2.
  • the frequency domain unit of the first uplink physical resource includes a frequency domain unit of the second uplink physical resource.
  • the second DCI may further include the number of frequency domain units M 'occupied by the second DM-RS, where M' is an integer greater than or equal to 1. Among them, M 'is smaller than N, and M' is smaller than M. The meaning and configuration of M 'are similar to those of M and will not be repeated here. Because the second uplink physical resource and the first uplink physical resource partially overlap in the frequency domain, that is, there is a certain channel correlation, when the second uplink physical resource is used for uplink data transmission, the transmission on the second uplink physical resource can be reduced.
  • the frequency domain density of the DM-RS corresponding to the uplink data can further increase the transmission power of the DM-RS corresponding to the uplink data transmitted on the second uplink physical resource, ensure the transmission performance of the DM-RS, and better perform the channel. It is estimated that the decoding performance of uplink data information is finally guaranteed.
  • the second DCI may further include a frequency domain position of a frequency domain resource occupied by the second DM-RS.
  • the frequency domain position of the frequency domain resource occupied by the second DM-RS is similar to the meaning and configuration of the frequency domain position of the frequency domain resource occupied by the first DM-RS, and details are not described herein.
  • the second uplink physical resource includes a PUSCH resource and / or a PUCCH resource.
  • the invention is not limited.
  • the second DCI and the first DCI may be the same DCI or different DCIs, which is not limited in the present invention.
  • the terminal device 111 sends the second data information and the second DM-RS to the network device 101 on the second uplink physical resource in the third time period.
  • the network device 101 receives the second data information and the second DM-RS on the second uplink physical resource in the third time period.
  • Step S405 is optional.
  • the operation of the network device 101 in S405 may be performed by the transceiver 202, or performed by the processor 201 through the transceiver 202.
  • the operation of the terminal device 111 in S402 may be performed by the transceiver 301, or performed by the processor 304 through the transceiver 301.
  • the meaning of the second data information is similar to that of the first data information, and details are not described herein.
  • the number of frequency domain units M 'occupied by the second DM-RS is less than M.
  • the terminal device 111 determines that M 'is less than M.
  • the pre-configured value is 3, that is, when the interval between the first time period and the third time period is less than or equal to 3, the terminal device 111 determines that M 'is less than M.
  • the pre-configured value may be a fixed value in the protocol, or may be sent by the network device 101 to the terminal device 111 through signaling.
  • the signaling may be high-level signaling, and the high-level signaling may be MAC layer signaling. Order, RLC layer signaling, PDCP layer signaling, or RRC layer signaling, the present invention is not limited.
  • the high-level signaling may be terminal-specific high-level signaling, may be cell-specific high-level signaling, or may be high-level signaling shared by a group of terminal equipment, which is not limited in the present invention.
  • the signaling can be physical layer control signaling.
  • the physical layer control signaling can be terminal equipment specific signaling, cell specific signaling, or signaling shared by a group of terminal equipment, which is not limited in the present invention.
  • the transmission parameters of the first uplink physical resource are the same as the transmission parameters of the second uplink physical resource.
  • the second uplink physical resource and the first uplink physical resource have a certain channel correlation
  • the DM corresponding to the uplink data transmitted on the second uplink physical resource can be reduced.
  • -RS frequency domain density which can further increase the transmission power of the DM-RS corresponding to the uplink data transmitted on the second uplink physical resource, ensure the performance of the DM-RS, thereby better performing channel estimation, and finally guaranteeing uplink data information Decoding performance.
  • the terminal device 111 when at least one time period between the first time period and the third time period, or all time periods, or K consecutive time periods, or cumulative K time periods, the terminal device 111 is allocated uplink For physical resources (such as PUSCH), the terminal device 111 determines that M ′ is less than M, where K is an integer greater than or equal to 0. For example, as shown in FIG. 4c, the terminal device 111 has uplink physical resources in each time period from the first time period (time period n) to the third time period (time period n + 3).
  • the frequency domain unit of the second uplink physical resource overlaps with at least a part of the frequency domain unit of the first uplink physical resource, and at least a part of the frequency domain unit of the second uplink physical resource is from the first time period to the third At least a part of the frequency domain unit of the uplink physical resource over at least one time period between the time periods overlaps.
  • the frequency domain unit of the first uplink physical resource in the first time period includes the frequency domain unit of the second uplink physical resource in the third time period, and at least one time between the first time period and the third time period
  • the frequency domain unit of the uplink physical resource on the segment includes a frequency domain unit of the second uplink physical resource on the third time period.
  • the frequency domain unit of the first uplink physical resource, the frequency domain unit of the second uplink physical resource, and the frequency domain unit of the uplink physical resource in at least one time period between the first time period and the third time period are the same. Further, the interval between the first time period and the third time period is greater than a pre-configured value, or the number of at least one time period between the first time period and the third time period is greater than a pre-configured value and the first The interval between the time period and the third time period is less than or equal to a pre-configured value.
  • the one or more pre-configured values may be fixed values in the protocol, or may be sent by the network device 101 to the terminal device 111 through signaling.
  • the signaling may be high-level signaling, and the high-level signaling may be It is MAC layer signaling, RLC layer signaling, PDCP layer signaling, or RRC layer signaling, which is not limited in the present invention.
  • the high-level signaling may be terminal-specific high-level signaling, may be cell-specific high-level signaling, or may be high-level signaling shared by a group of terminal equipment, which is not limited in the present invention.
  • the signaling can be physical layer control signaling.
  • the physical layer control signaling can be terminal equipment specific signaling, cell specific signaling, or signaling shared by a group of terminal equipment, which is not limited in the present invention. .
  • the transmission parameter of the first uplink physical resource is the same as the transmission parameter of the uplink physical resource in at least one period between the first time period and the third time period, and the transmission parameter of the first uplink physical resource is the same as the second
  • the transmission parameters of the uplink physical resources are the same.
  • the transmission parameters include information on the number of transmission layers, that is, the channel matrix dimensions of data transmission on the first uplink physical resource and the second uplink physical resource are the same, so that the first DM-RS transmitted on the first uplink physical resource is used.
  • the uplink data transmitted on the second uplink physical resource may be estimated.
  • the transmission parameters may also include the size and location of the frequency domain resources occupied by data transmission.
  • the first uplink physical resources may be used for transmission.
  • the first DM-RS can estimate uplink data transmitted on the second uplink physical resource, thereby further reducing the frequency domain unit occupied by the DM-RS transmitted on the second uplink physical resource.
  • the terminal device 111 can continuously The uplink transmission is performed in a time period, thereby reducing the density of the DM-RS when using subsequent uplink physical resources for uplink transmission, which can further increase the transmission power of the DM-RS, ensure the performance of the DM-RS, and simultaneously, it can combine multiple The DM-RS in the time period performs channel estimation, thereby better performing channel estimation, and finally ensuring decoding performance of uplink data information. For example, as shown in FIG.
  • the DM-RSs in the time period n + 1 to n + 2 occupy a total of 7 PRBs
  • the DM-RSs in the time period n + 3 occupy a total of 3 PRBs.
  • the network device 101 may use the DM-RS on n + 3 and the DM-RS on n + 1 ⁇ n + 2 to perform joint channel estimation, thereby receiving data information on n + 3.
  • the terminal device sends DM-RS and data information on uplink physical resources in at least one time period between the first time period and the third time period, and the at least one time period, the first The time interval between any two time periods in the time period and the time period included in the third time period is less than K, and K is an integer greater than or equal to 0.
  • the terminal device 111 sends DM-RS and data information on uplink physical resources in at least one of the first time period and the third time period. For example, as shown in FIG. 4c, if the terminal device 111 has uplink physical resources in each time period from the first time period (time period n) to the third time period (time period n + 3), the terminal device 111 may The uplink transmission is performed in consecutive time periods.
  • the time correlation and frequency correlation of uplink physical resources in multiple time periods are used to reduce the density of DM-RS, so that DM-RS can be transmitted at higher power and DM is guaranteed.
  • -RS performance so as to better perform channel estimation, and finally guarantee decoding performance of uplink data information.
  • FIG. 5 is a schematic flowchart of a method provided by Embodiment 2 of the present invention. Implementation 2 includes the following steps:
  • S501 is similar to S401, and details are not described herein.
  • the network device 101 sends downlink control information (Downlink Control Information) to the terminal device 111. Accordingly, the terminal device 111 receives the DCI.
  • Downlink Control Information Downlink Control Information
  • the DCI includes information about the first uplink physical resource in the first time period. For a specific manner, refer to the description in step S402.
  • the DCI may further include an SRS trigger request.
  • SRS trigger request For a specific manner, refer to the description in step S402.
  • the SRS resource selection indicator (SRS resource indicator) in the DCI may indicate the precoding of the PUSCH and the corresponding DM-RS.
  • the SRI field can be further used to trigger SRS resources corresponding to the SRI.
  • the terminal device 111 may determine the configuration information of the SRS resource corresponding to the SRS resource number indicated by the SRI, and the precoding used by the SRS sent on the SRS resource is earlier than the SRI and closest to the SRI time
  • the SRS used on the SRS resource corresponding to the SRS resource number indicated by the SRI uses the same precoding.
  • the SRS resource is associated with a first uplink physical resource.
  • SRS resource selection indicator SRI
  • TRI rank indicator
  • TPMI Transmission Precoding Matrix Indicator
  • the SRS associated with the PUSCH refers to the channel estimation that the SRS uses for the PUSCH demodulation, that is, the first DM-RS and the
  • the precoding scheme of the PUSCH associated with the first DM-RS is the same as the precoding scheme of the SRS.
  • the precoding scheme refers to the physical antenna port, the number of antenna ports, and the phase weighting between the antenna ports used for signal or data transmission. Or, a new field is added in the DCI to indicate the precoding scheme and the transmission port of the SRS associated with the PUSCH.
  • the SRI field in the DCI is used to indicate the SRS resources for channel measurement for non-codebook transmission from L single ports.
  • One or more SRS resources are selected, and the number of antenna ports for transmitting the PUSCH and the DM-RS associated with the PUSCH is the same as the number of antenna ports of the SRS indicated by the SRI field and the precoding scheme of each port, and L is a positive integer.
  • SRI field may also indicate that the associated simultaneously with the PUSCH SRS precoding scheme, associated with the PUSCH channel of the SRS SRS means for estimating the PUSCH demodulation, i.e., a first and a second DM-RS DM-
  • the precoding scheme of the PUSCH associated with the RS is the same as the precoding scheme of the SRS.
  • the DCI when the first uplink physical resource includes the PUSCH and the transmission mode of the PUSCH is codebook-based transmission, when the DCI does not include a field for indicating the precoding scheme of the PUSCH and the DM-RS associated with the PUSCH, for example, the DCI is in the DCI format 0_0 (Format 0_0), that is, a compact DCI format.
  • the terminal device 111 can autonomously determine the PUSCH and the antenna port and the precoding matrix of the DM-RS associated with the PUSCH.
  • all PUSCHs scheduled through the DCI format 0_0 adopt single stream transmission.
  • Both the compact DCI format and the ordinary DCI format are used for uplink data scheduling.
  • the compact DCI format carries fewer bits and fields than the ordinary DCI format.
  • the DCI in S502 may be the same DCI as the first DCI in S402, or may be a different DCI.
  • the invention is not limited.
  • the terminal device 111 sends the first data information and the first DM-RS to the network device 101 on the first uplink physical resource in the first time period.
  • the terminal device 111 sends the SRS in the second time period. Specifically, the terminal device 111 sends the SRS on the frequency domain unit and the time domain unit in the second time period occupied by the SRS.
  • the operations of the network device 101 in S503 may be performed by the processor 201 through the transceiver 202.
  • the operations of the terminal device 111 in S503 may be performed by the processor 304 through the transceiver 301.
  • Step S503 is similar to S403, and is not repeated here.
  • the SRS receiving performance can be improved, and at the same time, the channel estimation of the SRS used to receive the associated PUSCH can be improved Reception performance of PUSCH.
  • the example of the present invention also provides a processor-readable storage medium including instructions, and the instructions are implemented when the instructions run on the processor.
  • the sending action may be that the input and output ports of the processor output a baseband signal that carries information to be sent
  • the receiving action may be that the input and output ports of the processor receive the baseband that carries information to be received signal.
  • the processor-readable storage medium provided by the embodiment of the present invention may also be a computer-readable storage medium.
  • An example of the present invention further provides an apparatus (for example, an integrated circuit, a wireless device, a circuit module, etc.) for implementing the above method.
  • the device includes a processor and a memory connected to the processor, the memory is used to store instructions, and the processor is used to read and execute the instructions stored in the memory, so that the device executes the foregoing Methods.
  • Implementing the devices described herein may be a stand-alone device or may be part of a larger device.
  • the device may be (i) a stand-alone IC; (ii) a collection with one or more ICs, which may include a memory IC for storing data and / or instructions; (iii) an RFIC, such as an RF receiver or RF transmitter / Receiver; (iv) ASIC, such as a mobile station modem; (v) modules that can be embedded in other devices; (vi) receiver, cell phone, wireless device, handset, or mobile unit; (vii) others Wait.
  • a stand-alone IC a collection with one or more ICs, which may include a memory IC for storing data and / or instructions; (iii) an RFIC, such as an RF receiver or RF transmitter / Receiver; (iv) ASIC, such as a mobile station modem; (v) modules that can be embedded in other devices; (vi) receiver, cell phone, wireless device, handset, or mobile unit; (vii) others Wait.
  • the method and apparatus provided in the embodiments of the present invention may be applied to a terminal device or an access network device (or a network device) (which may be collectively referred to as a wireless device).
  • the terminal device or access network device or wireless device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • This hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also called main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system.
  • This application layer contains applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiment of the present invention does not limit the specific structure of the method execution subject, as long as the program that records the code of the method of the embodiment of the present invention can be used to transmit a signal according to the embodiment of the present invention.
  • the communication method is sufficient.
  • the wireless communication method according to the embodiment of the present invention may be executed by a terminal device or an access network device, or a function that can call a program and execute the program in the terminal device or the access network device. Module.
  • various aspects or features of embodiments of the present invention may be implemented as a method, an apparatus, or an article of manufacture using standard programming and / or engineering techniques.
  • article of manufacture encompasses a computer program accessible from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (eg, hard disks, floppy disks, or magnetic tapes, etc.), optical disks (eg, compact discs (CDs), digital versatile discs (DVDs) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and / or other machine-readable media used to store information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instruction (s) and / or data.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server, or data center Transmission by wire (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, and the like that includes one or more available medium integration.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (Solid State Disk (SSD)), and the like.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a DVD
  • a semiconductor medium for example, a solid state disk (Solid State Disk (SSD)
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and it should not deal with the present invention.
  • the implementation process of the examples constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • 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, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the embodiment of the present invention is essentially a part that contributes to the existing technology or a part of the technical solution may be embodied in the form of a software product, which is stored in a storage medium.
  • the foregoing storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks and other media that can store program codes .

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne, dans des modes de réalisation, un procédé d'envoi d'informations, un procédé de réception, et un dispositif, destinés à améliorer la qualité de réception d'un signal de référence de démodulation de liaison montante (DM-RS), et partant, améliorer davantage la qualité d'estimation de canal. Le procédé met en oeuvre le dispositif selon les étapes suivantes : un appareil de terminal reçoit des informations de commande de liaison descendante (DCI) comprenant une ressource physique de liaison montante d'un premier intervalle de temps; l'appareil de terminal envoie des informations de données et un DM-RS sur la ressource physique de liaison montante, le nombre d'unités du domaine fréquentiel occupées par le DM-RS étant inférieur au nombre d'unités du domaine fréquentiel de la ressource physique de liaison montante; et dans le même temps, l'appareil de terminal envoie un signal de référence dans un second intervalle de temps. Au moins une partie des unités du domaine fréquentiel occupées par le signal de référence chevauche au moins une partie des unités du domaine fréquentiel de la ressource physique de liaison montante du premier intervalle de temps; et les unités du domaine fréquentiel occupées par le signal de référence comprennent au moins une partie des unités du domaine fréquentiel de la ressource physique de liaison montante non occupées par le DM-RS. Le signal de référence et le DM-RS sont utilisés pour une estimation conjointe de canal.
PCT/CN2019/104896 2018-09-10 2019-09-09 Procédé d'envoi d'informations, procédé de réception d'informations, et dispositif WO2020052514A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811050428.1A CN110891312B (zh) 2018-09-10 2018-09-10 一种信息发送方法，信息接收的方法和装置
CN201811050428.1 2018-09-10

Publications (1)

Publication Number Publication Date
WO2020052514A1 true WO2020052514A1 (fr) 2020-03-19

Family

ID=69745014

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/104896 WO2020052514A1 (fr) 2018-09-10 2019-09-09 Procédé d'envoi d'informations, procédé de réception d'informations, et dispositif

Country Status (2)

Country Link
CN (1) CN110891312B (fr)
WO (1) WO2020052514A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022216224A1 (fr) * 2021-04-06 2022-10-13 Panasonic Intellectual Property Corporation Of America Appareils de communication et procédés de communication pour optimiser une fenêtre de domaine temporel et dmrs pour une estimation de canal commun
CN116636169A (zh) * 2020-12-30 2023-08-22 Oppo广东移动通信有限公司 参考信号资源的传输方法、设备及存储介质

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111417187B (zh) * 2020-03-25 2022-02-22 展讯通信（上海）有限公司 实际trs频域资源的确定方法及装置、存储介质、ue
CN113543326A (zh) * 2020-04-17 2021-10-22 维沃移动通信有限公司 物理上行共享信道传输方法、网络设备及终端设备
CN114079490A (zh) * 2020-08-13 2022-02-22 华为技术有限公司 一种通信方法及装置
CN114080013B (zh) * 2020-08-14 2024-03-19 华为技术有限公司 信息传输方法及通信装置
CN114205735A (zh) * 2020-09-03 2022-03-18 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
WO2022056885A1 (fr) * 2020-09-19 2022-03-24 华为技术有限公司 Procédé et appareil de communication
EP4233220A4 (fr) * 2020-11-20 2024-03-20 Zte Corp Systèmes et procédés pour l'indication d'une association signal de référence de suivi de phase-signal de référence de démodulation
CN115189853A (zh) * 2021-04-07 2022-10-14 华为技术有限公司 一种信号传输方法和装置
CN115913499A (zh) * 2021-09-30 2023-04-04 华为技术有限公司 一种参考信号的发送方法和装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107409014A (zh) * 2015-01-28 2017-11-28 交互数字专利控股公司 用于操作大量载波的上行链路反馈方法
WO2018143740A1 (fr) * 2017-02-05 2018-08-09 엘지전자 주식회사 Procédé pour transmettre des informations de commande de liaison montante dans un système de communication sans fil et appareil le permettant

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2343849B1 (fr) * 2010-01-07 2019-05-29 Samsung Electronics Co., Ltd. Appareil et procédé pour améliorer les propriétés de signaux de référence en liaison montante
CN102761911B (zh) * 2011-04-26 2015-07-29 中国移动通信集团公司 解调参考信号的发送方法及装置、接收方法及装置
KR20130018075A (ko) * 2011-08-12 2013-02-20 주식회사 팬택 전송단, 전송단의 기준 신호 설정 방법, 단말, 단말의 기준 신호 전송 방법
CN103096479B (zh) * 2011-11-03 2016-05-25 中国移动通信集团公司 一种上行解调参考信号的发送方法和设备
US20130128821A1 (en) * 2011-11-18 2013-05-23 Nokia Siemens Networks Oy Demodulation Reference Signal Arrangement For Uplink Coordinated Multi-Point Reception
WO2014089782A1 (fr) * 2012-12-12 2014-06-19 Broadcom Corporation Conception et signalisation pour des srs améliorés
WO2014096909A1 (fr) * 2012-12-21 2014-06-26 Nokia Corporation Regroupement de cs et de valeurs de peigne pour un dm-rs et un srs sur des ressources temps-fréquence partagées
WO2016013744A1 (fr) * 2014-07-24 2016-01-28 Lg Electronics Inc. Procédé et appareil pour transmettre des données de liaison montante dans un système de communication sans fil
JP6128692B2 (ja) * 2014-09-01 2017-05-17 シャープ株式会社 移動局装置、基地局装置および通信方法
WO2016064218A2 (fr) * 2014-10-24 2016-04-28 엘지전자 주식회사 Procédé de transmission d'un canal de liaison montante et d'un signal de référence de démodulation par un dispositif mtc
CN107926023B (zh) * 2015-07-27 2020-12-01 华为技术有限公司 通信方法和网络设备
CN107926015B (zh) * 2015-08-21 2022-10-14 株式会社Ntt都科摩 用户终端、无线基站和无线通信方法
EP3343810B1 (fr) * 2015-09-25 2021-03-03 Huawei Technologies Co., Ltd. Procédé de transmission de données, appareil de transmission de données, station de base et équipement utilisateur
CN114884640A (zh) * 2016-03-31 2022-08-09 北京三星通信技术研究有限公司 通信系统中的终端、基站及其方法
WO2017218794A1 (fr) * 2016-06-15 2017-12-21 Convida Wireless, Llc Signalisation de commande de téléchargement amont pour une nouvelle radio
US10440706B2 (en) * 2016-08-08 2019-10-08 Sharp Kabushiki Kaisha Systems and methods for PUCCH resource allocation and HARQ-ACK reporting with processing time reduction
WO2018027887A1 (fr) * 2016-08-12 2018-02-15 Qualcomm Incorporated Signalisation pour drs de liaison montante ifdm
CA3044647A1 (fr) * 2016-11-25 2018-05-31 Ntt Docomo, Inc. Terminal utilisateur et methode de communication radio
KR20190089062A (ko) * 2016-12-27 2019-07-29 에프쥐 이노베이션 컴퍼니 리미티드 대역폭 부분(bwp) 지시자를 시그널링하는 방법 및 이를 이용하는 무선 통신 장비
CN108282285B (zh) * 2017-01-05 2020-06-02 华为技术有限公司 信号传输方法和装置
US10440698B2 (en) * 2017-02-06 2019-10-08 Qualcomm Incorporated Transmitting uplink control information
JP6462751B2 (ja) * 2017-03-30 2019-01-30 株式会社Ｎｔｔドコモ ユーザ端末、無線基地局及び無線通信方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107409014A (zh) * 2015-01-28 2017-11-28 交互数字专利控股公司 用于操作大量载波的上行链路反馈方法
WO2018143740A1 (fr) * 2017-02-05 2018-08-09 엘지전자 주식회사 Procédé pour transmettre des informations de commande de liaison montante dans un système de communication sans fil et appareil le permettant

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CHINA TELECOM: "Further discussion on NR PUSCH demodulation requirements", 3GPP TSG-RAN WG4 MEETING #88, R4-1809661, vol. RAN WG4, 10 August 2018 (2018-08-10), Gothenburg , Sweden, pages 1 - 8, XP051578712 *
ERICSSON: "Discussion on NR PUSCH Demodulation Performance Requirements", TSG-RAN WORKING GROUP 4 (RADIO) AD HOC MEETING #1807, R4-1808679, vol. TSG RAN, 1 July 2018 (2018-07-01), Montreal, Canada, pages 1 - 6, XP051468574 *
HUAWEI ET AL: "Discussion on DMRS-Downlink/UplinkConfig H286 H287", 3GPP TSG-RAN WG2 MEETING 103, R2-1811976, vol. RAN WG2, 24 August 2018 (2018-08-24), Gothenburg, Sweden, pages 1 - 3, XP051521606 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116636169A (zh) * 2020-12-30 2023-08-22 Oppo广东移动通信有限公司 参考信号资源的传输方法、设备及存储介质
WO2022216224A1 (fr) * 2021-04-06 2022-10-13 Panasonic Intellectual Property Corporation Of America Appareils de communication et procédés de communication pour optimiser une fenêtre de domaine temporel et dmrs pour une estimation de canal commun

Also Published As

Publication number Publication date
CN110891312A (zh) 2020-03-17
CN110891312B (zh) 2023-11-03

Similar Documents

Publication Publication Date Title
WO2020052514A1 (fr) Procédé d'envoi d'informations, procédé de réception d'informations, et dispositif
CN109802792B (zh) 接收参考信号的方法和发送参考信号的方法
US10785010B2 (en) Wireless communications method and apparatus
EP3731583B1 (fr) Procédé de transmission de signal de référence de sondage et dispositif terminal
CN111095977B (zh) 用于csi-rs端口子集指示的方法和装置
WO2018188561A1 (fr) Procédé d'envoi d'informations de liaison montante, procédé de réception et appareil
EP3726767B1 (fr) Procédé et dispositif de transmission de données et appareil de communication
JP7227297B2 (ja) データ通信方法、端末、および基地局
WO2018202031A1 (fr) Procédé et dispositif de mesure d'interférence, et procédé et dispositif d'acquisition d'informations d'état de canal
WO2018137222A1 (fr) Procédé et appareil d'envoi de signal de référence, et procédé et appareil de réception de signal de référence
AU2017338040A1 (en) Control of aperiodic signalling of SRS for wireless systems
KR20200044963A (ko) 업링크 제어 채널을 전송하기 위한 방법 및 장치
US20230137907A1 (en) Wireless communication method, terminal device, and network device
WO2018127138A1 (fr) Procédé de configuration de signal de référence, station de base, équipement utilisateur et système
WO2020020315A1 (fr) Procédé et appareil de configuration de ressources temporelles de liaison montante et de liaison descendante
WO2018202041A1 (fr) Procédé et dispositif de transmission d'informations et dispositif et procédé de réception d'informations
WO2018107457A1 (fr) Dispositif et procédé de mutlplexage de données, et système de communication
WO2022228117A1 (fr) Procédé et dispositif de détermination d'un motif ptrs
WO2022205022A1 (fr) Procédé et appareil de transmission d'un signal de référence
CN114826524B (zh) 混合自动重传请求确认harq-ack资源确定方法
CN111865517B (zh) 发送参考信号的方法和装置
JP2020503727A (ja) 上り制御信号伝送方法および上り制御信号伝送装置
WO2022151439A1 (fr) Procédé et appareil de communication
WO2022151500A1 (fr) Procédé et appareil de communication
WO2023066202A1 (fr) Procédé et appareil de mappage de ressources pour signal de référence, et terminal et dispositif de réseau

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19859899

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19859899

Country of ref document: EP

Kind code of ref document: A1