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WO2019170089A1 - Procédé et appareil de transmission d'informations et nœud de communication - Google Patents

Procédé et appareil de transmission d'informations et nœud de communication Download PDF

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Publication number
WO2019170089A1
WO2019170089A1 PCT/CN2019/077031 CN2019077031W WO2019170089A1 WO 2019170089 A1 WO2019170089 A1 WO 2019170089A1 CN 2019077031 W CN2019077031 W CN 2019077031W WO 2019170089 A1 WO2019170089 A1 WO 2019170089A1
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WIPO (PCT)
Prior art keywords
antenna
information
communication node
dci
srs
Prior art date
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Ceased
Application number
PCT/CN2019/077031
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English (en)
Chinese (zh)
Inventor
王瑜新
鲁照华
蒋创新
李儒岳
吴昊
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ZTE Corp
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ZTE Corp
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Publication date
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Publication of WO2019170089A1 publication Critical patent/WO2019170089A1/fr
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Ceased legal-status Critical Current

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    • 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • 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
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • 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
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal

Definitions

  • the present disclosure relates to the field of communication technologies, for example, to a method, apparatus, and communication node for information transmission.
  • High-frequency carrier communication has a large available bandwidth and can provide efficient high-speed data communication.
  • a big technical challenge faced by high-frequency carrier communication is relatively low-frequency signals.
  • the fading of high-frequency signals in space is very large, although it causes spatial fading loss in high-frequency signals in outdoor communication, but due to high
  • the reduction in the wavelength of the frequency signal typically allows more antennas to be used so that communication can be based on the beam to compensate for fading losses in space.
  • the high-frequency communication system configures a large number of antennas to form a downlink transmission beam to compensate for the spatial fading of high-frequency communication, and the second communication node also A large number of antennas are configured to form an uplink transmission beam.
  • the transmission of the Sounding Reference Signal (SRS) will also be transmitted in the form of a beam.
  • the present disclosure provides a method, apparatus, and communication node for information transmission to support switching of an antenna for transmitting an uplink signal.
  • the present disclosure provides a method of information transmission, including:
  • the first communication node configures, by using signaling or a predefined manner, the purpose of measuring the reference signal resource identifier SRI domain in Downlink Control Information (DCI);
  • DCI Downlink Control Information
  • the antenna information includes information about an antenna or an antenna group used by the second communications node to send an uplink signal, where the SRS resource indication information is used to indicate that the second communications node sends the SRS resource used by the physical uplink shared channel PUSCH. .
  • the present disclosure also provides a method for information transmission, including:
  • the first communication node configures antenna information in a predefined manner
  • the first communication node indicates the antenna information by using existing signaling in the downlink control information DCI, or indicates the antenna information by using a Cyclic Redundancy Check (CRC) of the DCI, and sends the DCI To the second communication node;
  • CRC Cyclic Redundancy Check
  • the antenna information includes information of an antenna or an antenna group used by the second communication node to transmit an uplink signal.
  • the present disclosure also provides a method for information transmission, including:
  • the second communication node receives the DCI sent by the first communication node, and parses the information carried by the SRI domain according to the use of the SRI domain in the DCI, and learns at least the antenna information and the SRS resource indication information of the measurement reference signal.
  • the antenna information includes information of an antenna or an antenna group used by the second communications node to send an uplink signal, where the SRS resource indication information is used to indicate that the second communications node sends a physical uplink shared channel PUSCH. SRS resources.
  • the present disclosure also provides a method for information transmission, including:
  • the second communication node configures an antenna or an antenna group according to the antenna information
  • the antenna information includes information of an antenna or an antenna group used by the second communication node to transmit an uplink signal.
  • the present disclosure also provides an apparatus for information transmission, which is applied to a first communication node, and includes:
  • the first configuration module is configured to configure, by using signaling or a predefined manner, the use of the measurement reference signal resource identifier SRI domain in the downlink control information DCI;
  • the first sending module is configured to send the DCI to the second communication by using at least one of the antenna information and the measurement reference signal SRS resource indication information in the SRI domain in the DCI according to the use of the SRI domain in the DCI node;
  • the antenna information includes information about an antenna or an antenna group used by the second communications node to send an uplink signal, where the SRS resource indication information is used to indicate that the second communications node sends the SRS resource used by the physical uplink shared channel PUSCH. .
  • the present disclosure also provides an apparatus for information transmission, which is applied to a first communication node, and includes:
  • a second configuration module configured to configure antenna information in a predefined manner
  • the second sending module is configured to indicate the antenna information by using existing signaling in the downlink control information DCI, or to indicate the antenna information by using a cyclic redundancy check code CRC of the DCI, and send the DCI to the second communication node. ;
  • the antenna information includes information of an antenna or an antenna group used by the second communication node to transmit an uplink signal.
  • the present disclosure also provides an apparatus for information transmission, which is applied to a second communication node, and includes:
  • a third determining module configured to determine, by signaling or a predefined manner, the use of the SRI domain in the downlink control information DCI;
  • the third receiving module is configured to receive the DCI sent by the first communications node, and parse the information carried by the SRI domain according to the use of the SRI domain of the reference signal resource identifier in the DCI, and obtain the antenna information and the SRS resource indication information. At least one of
  • the antenna information includes information of an antenna or an antenna group used by the second communications node to send an uplink signal, where the SRS resource indication information is used to indicate that the second communications node sends a physical uplink shared channel PUSCH. SRS resources.
  • the present disclosure also provides an apparatus for information transmission, which is applied to a second communication node, and includes:
  • the fourth receiving module is configured to receive the downlink control information DCI sent by the first communications node, obtain the antenna information according to the existing signaling in the DCI according to a predefined manner, or learn the CRC of the DCI according to a predefined manner.
  • the antenna information ;
  • a fourth configuration module configured to configure an antenna or an antenna group according to the antenna information
  • the antenna information includes information of an antenna or an antenna group used by the second communication node to transmit an uplink signal.
  • the present disclosure also provides a first communication node, including:
  • a memory configured to store the processor executable instructions
  • a transmission device configured to perform information transceiving and communication according to control of the processor
  • processor configured to perform the following operations:
  • the antenna information includes information about an antenna or an antenna group used by the second communications node to send an uplink signal, where the SRS resource indication information is used to indicate that the second communications node sends the SRS resource used by the physical uplink shared channel PUSCH. .
  • the present disclosure also provides a first communication node, including:
  • a memory configured to store the processor executable instructions
  • a transmission device configured to perform information transceiving and communication according to control of the processor
  • processor configured to perform the following operations:
  • the antenna information is indicated by the existing signaling in the DCI, or the antenna information is indicated by a cyclic redundancy check code CRC of the DCI, and the DCI is sent to the second communication node;
  • the antenna information includes information of an antenna or an antenna group used by the second communication node to transmit an uplink signal.
  • the present disclosure also provides a second communication node, including:
  • a memory configured to store the processor executable instructions
  • a transmission device configured to perform information transceiving and communication according to control of the processor
  • processor configured to perform the following operations:
  • the antenna information includes information about an antenna or an antenna group for transmitting an uplink signal, and the SRS resource indication information is used to indicate that the second communication node sends an SRS resource used by the physical uplink shared channel PUSCH.
  • the present disclosure also provides a second communication node, including:
  • a memory configured to store the processor executable instructions
  • a transmission device configured to perform information transceiving and communication according to control of the processor
  • processor configured to perform the following operations:
  • the antenna information includes information of an antenna or an antenna group for transmitting an uplink signal.
  • the present disclosure also provides a computer readable storage medium storing computer executable instructions for performing the method of information transmission described above.
  • FIG. 1 is a flowchart of a method for information transmission provided by an embodiment (first solution, applied to a first communication node);
  • FIG. 2 is a flowchart of another method for information transmission provided by an embodiment (first solution, applied to a second communication node);
  • FIG. 3 is a flowchart of another method for information transmission provided by an embodiment (second scheme, applied to a first communication node);
  • FIG. 4 is a flowchart of another method for information transmission provided by an embodiment (second scheme, applied to a second communication node);
  • FIG. 5 is a schematic diagram of an apparatus for information transmission according to an embodiment (first solution, applied to a first communication node);
  • FIG. 6 is a schematic diagram of another apparatus for information transmission provided by an embodiment (a first scheme, applied to a second communication node);
  • FIG. 7 is a schematic diagram of another apparatus for information transmission provided by an embodiment (second scheme, applied to a first communication node);
  • FIG. 8 is a schematic diagram of another apparatus for information transmission provided by an embodiment (second scheme, applied to a second communication node).
  • a Physical Downlink Control Channel (PDCCH) is used to carry DCI, where the DCI may include uplink and downlink scheduling information, and uplink power control information.
  • the DCI format is divided into DCI format 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 3, 3A, etc., and later evolved to the LTE Evolution (Long Term Evolution-Advanced, LTE-A) version (Release). ) 12 (LTE-A version 12) has added DCI format 2B, 2C, 2D to support a variety of different applications and transmission modes.
  • the first communication node such as an evolved base station (e-Node-B, eNB) may configure a second communication node device, such as a User Equipment (UE), by using downlink control information, or the second communication node device accepts a higher layer (higher)
  • UE User Equipment
  • the configuration of the layers also known as configuring the UE through higher layer signaling.
  • the Sounding Reference Signal is a signal used by the second communication node device and the first communication node to measure Channel State Information (CSI).
  • the UE periodically transmits the uplink SRS on the last data symbol of the transmission subframe according to parameters such as the frequency band indicated by the eNB, the frequency domain location, the sequence cyclic shift, the period, and the subframe offset.
  • the eNB determines the uplink CSI of the UE according to the received SRS, and performs operations such as frequency domain selection scheduling, closed loop power control, and the like according to the obtained CSI.
  • Non-precoded SRS ie antenna-specific SRS
  • PUSCH reference signal for demodulation PUSCH reference signal for demodulation
  • DMRS De Modulation Reference Signal
  • the first communication node can estimate the original CSI of the uplink by receiving the non-precoded SRS, and the pre-coded DMRS cannot enable the first communication node to estimate the original CSI of the uplink.
  • the UE transmits the non-precoded SRS by using multiple antennas the SRS resources required by each UE are increased, which results in a decrease in the number of UEs that can be simultaneously multiplexed in the system.
  • the UE may send the SRS by using the high-level signaling (also called triggering type trigger 0) or the downlink control information (also called trigger type 1 triggering), and the triggering is based on the high-level signaling.
  • the SRS is triggered by the downlink control information as an aperiodic SRS.
  • the manner of aperiodic transmission of SRS is added, which improves the utilization of SRS resources to some extent and improves the flexibility of resource scheduling.
  • the first communication node can communicate antenna information to the second communication node to effect flexible switching of the antenna or antenna group used by the second communication node to transmit the uplink signal.
  • the first communication node can be used to transmit antenna information to the second communication node by using two schemes.
  • the first solution is to configure the use of the SRI domain in the DCI by signaling or in a predefined manner, so that the antenna information can be carried through the SRI domain in the DCI.
  • a method for information transmission in this embodiment is applied to a first communication node, and includes the following steps.
  • Step 1010 The first communication node configures the use of the SRI domain in the DCI by signaling or a predefined manner.
  • Step 1020 The first communication node sends the DCI to the first one by using at least one of the SRI domain carrying antenna information and the measurement reference signal SRS resource indication information in the DCI according to the use of the SRI domain in the DCI. Two communication nodes.
  • the antenna information includes information about an antenna or an antenna group used by the second communications node to send an uplink signal, where the SRS resource indication information is used to indicate that the second communications node sends a physical uplink shared channel PUSCH. SRS resources.
  • the first communication node may transmit antenna information to the second communication node, thereby implementing flexible switching of the antenna or antenna group for transmitting the uplink signal.
  • the first communication node may be a base station of a macro cell, a base station or a transmission node of a small cell, a sending node in a high frequency communication system, a sending node in an Internet of Things system, and the like.
  • the two communication nodes may be nodes in a communication system such as a user terminal (UE), a mobile phone, a portable device, or a car.
  • the uplink signal may be an SRS, or an uplink demodulation reference signal, or an uplink signal for random access, or a PUSCH signal, or a phase tracking reference signal.
  • the information of the antenna or the antenna group may be the identification information of the antenna or the antenna group, the port information of the antenna or the antenna group, or the beam identification information corresponding to the antenna or the antenna group.
  • the SRS resource indication information may be information such as an SRS sequence, an SRS time-frequency location parameter, and the like.
  • the first communication node configures the use of the SRI domain in the DCI by means of signaling, including: the first communication node sends a radio resource control (Radio Resource Control, RRC) to the second communication node. Signaling, the RRC signaling is used to configure the use of the SRI domain.
  • RRC Radio Resource Control
  • the use of the SRI field in the DCI includes at least one of: an SRS resource indication for configuring a PUSCH transmission in a codebook mode, and a physical uplink shared channel PUSCH configured to be a non-codebook mode.
  • the SRS resource indication information includes at least one of: when configured as a codebook mode for PUSCH transmission SRS resource indication information, SRS resource indication information when configured as a non-codebook mode PUSCH transmission;
  • the antenna information includes at least one of: antenna information for antenna switching of SRS, antenna information for antenna switching of PUSCH .
  • the SRI domain may be used to indicate one or more of the foregoing four uses, and the RRC signaling may carry multiple bits for indicating the indication manner.
  • the SRI field is used to indicate one of the foregoing four uses, and 2 bits in the RRC signaling are used to indicate the indication manner, where 00 represents the SRS resource used in the SRI domain for configuring the PUSCH transmission in the codebook mode.
  • the indication 01 indicates an SRS resource indication when the SRI domain is configured for the physical uplink shared channel PUSCH transmission in the non-codebook mode, 10 indicates the antenna handover for the SRI domain for measuring the reference signal SRS, and 11 indicates that the SRI domain is used for physical uplink sharing. Antenna switching of channel PUSCH.
  • the SRI domain can be fixedly set to indicate one or more of the above four uses.
  • the SRI domain is fixed and carries the two types of SRS resource indication information and the two types of antenna information.
  • the purpose of predefining the SRI domain in the DCI is related to the recently configured SRS use.
  • the SRI domain in the DCI is used for antenna switching of the SRS or Antenna switching for PUSCH.
  • the SRS use may also be referred to as an SRS type.
  • the SRI domain can be configured for antenna switching of the SRS or antenna switching for the PUSCH by higher layer signaling.
  • the recently configured SRS usage may be the most recently configured SRS usage before the time slot or symbol where the DCI is located, or may be after the DCI is located in the time slot or symbol before the DCI takes effect. The most recently configured SRS use.
  • the second solution the antenna information is configured in a predefined manner, and the antenna information is carried by the DCI.
  • another method for information transmission in this embodiment is applied to the first communication node, and includes the following steps.
  • step 2010 the first communication node configures the antenna information in a predefined manner.
  • Step 2020 The first communication node indicates the antenna information by using existing signaling in the DCI, or indicates the antenna information by using a cyclic redundancy check code CRC of the DCI; and sending the DCI to the second communication node.
  • the antenna information includes information of an antenna or an antenna group used by the second communication node to send an uplink signal.
  • the first communication node may transmit antenna information to the second communication node, thereby implementing flexible switching of the antenna or antenna group for transmitting the uplink signal. Moreover, in this manner, the transmission antenna information does not occupy more resources, thereby improving resource utilization.
  • the first communication node may be a base station of a macro cell, a base station or a transmission node of a small cell, a sending node in a high frequency communication system, a sending node in an Internet of Things system, and the like, and a second
  • the communication node may be a node in a communication system such as a user terminal (UE), a mobile phone, a portable device, or a car.
  • the uplink signal may be an SRS, or an uplink demodulation reference signal, or an uplink signal for random access, or a PUSCH signal, or a phase tracking reference signal.
  • the information of the antenna or the antenna group may be the identification information of the antenna or the antenna group, the port information of the antenna or the antenna group, or the beam identification information corresponding to the antenna or the antenna group.
  • the first communication node indicates the antenna information by using existing signaling in the DCI, and may explicitly or explicitly indicate the antenna information by using existing signaling in the DCI.
  • the implicit indication means that the signaling has other uses, and may be used to indicate the antenna information if not used.
  • the first communication node indicates the antenna information by using existing signaling in the DCI, including: when the PUSCH resource allocation information carried in the DCI is type 0 (type 0),
  • the virtual resource block in the DCI indicates the antenna information to a physical resource block (VRB)-to-physical resource block (PRB mapping bit) or a frequency hopping flag.
  • VRB physical resource block
  • PRB mapping bit a frequency hopping flag
  • the PUSCH resource is allocated to type 0, and the VRB-to-PRB mapping bit and the Frequency hopping flag in the downlink control information are not used, and may be used to indicate the antenna information.
  • the antenna 0 or the antenna group 0 used by the second communication node is sent to send an uplink signal.
  • the value of the VRB-to-PRB mapping bit or the Frequency hopping flag in the downlink control information is 1, it indicates that the antenna 1 or the antenna group 1 used by the second communication node transmits an uplink signal. Therefore, the channel reciprocity problem when the number of transmission links of the second communication node and the number of reception links are inconsistent can be solved, for example, the case where the second communication node is configured as 1T2R, 2T4R, and 4T8R.
  • T is the number of transmit links
  • R is the number of receive links.
  • 1T2R indicates that the number of transmit links is 1, and the number of receive links is two.
  • the first communication node indicates the antenna information by using a CRC of the DCI, including: adopting an antenna selection mask and a Radio Network Tempory Identity (RNTI) corresponding to the second communication node.
  • RNTI Radio Network Tempory Identity
  • a CRC check is performed on the DCI, and the antenna selection mask indicates the antenna information.
  • the DCI is CRC checked using the antenna selection mask and the corresponding RNTI shown in Table 1 below.
  • the method further includes: the first communications node receiving antenna configuration information sent by the second communications node, where the antenna configuration information includes at least one of: an antenna corresponding to each radio frequency link Or antenna group information; such as (antenna 0, antenna 1), (antenna 2, antenna 3); antenna numbering.
  • the numbering manner of the antenna may include: sequential number, for example (antenna 0, antenna 1, antenna 2, antenna 3) and cross-polarization number, for example (antenna 0, antenna 2, antenna 1, antenna) 3).
  • the method further includes: determining, by the first communication node, the association relationship between the SRS resource port and the antenna port by using the second communication node in a predefined manner, such as Table 2 or Table 3 or Table 4 or Table 5 or Table 6 or Table 7.
  • the relationship between the SRS resource port and the antenna port when 1T8R, 2T8R, and 4T8R is defined.
  • Port 3 of the first SRS resource Antenna port 6 Port 0 of the second SRS resource Antenna port 1 Port 1 of the second SRS resource Antenna port 3 Port 2 of the second SRS resource Antenna port 5 Port 3 of the second SRS resource Antenna port 7
  • the SRS resource port and the antenna The association relationship of the ports is shown in Table 3.
  • Port 1 of the second SRS resource Antenna port 6 Port 0 of the third SRS resource Antenna port 1 Port 1 of the third SRS resource Antenna port 3 Port 0 of the fourth SRS resource Antenna port 5 Port 1 of the fourth SRS resource Antenna port 7
  • the SRS resource port and the antenna The association relationship of the ports is shown in Table 5.
  • the SRS resource port and the antenna The association relationship of the ports is shown in Table 7.
  • the SRS transmission enables the first communication node to utilize the channel reciprocity to support downlink data transmission.
  • the antenna switching of the uplink signal and the antenna switching of the SRS can be established.
  • another method for information transmission in this embodiment is applied to the second communication node, and includes the following steps.
  • Step 3010 The second communication node determines the use of the SRI domain in the DCI by signaling or a predefined manner.
  • Step 3020 the second communication node receives the DCI sent by the first communication node, and parses the information carried by the SRI domain according to the use of the SRI domain in the DCI, and learns at least the antenna information and the SRS resource indication information. one.
  • the antenna information includes information about an antenna or an antenna group used by the second communications node to send an uplink signal, where the SRS resource indication information is used to instruct the second communications node to send a physical uplink shared channel PUSCH.
  • the SRS resource used is used.
  • the second communication node may receive the antenna information transmitted by the first communication node, thereby implementing flexible switching of the antenna or antenna group for transmitting the uplink signal.
  • the first communication node may be a base station of a macro cell, a base station or a transmission node of a small cell, a sending node in a high frequency communication system, a sending node in an Internet of Things system, and the like.
  • the two communication nodes may be nodes in a communication system such as a user terminal (UE), a mobile phone, a portable device, or a car.
  • the uplink signal may be an SRS, or an uplink demodulation reference signal, or an uplink signal for random access, or a PUSCH signal, or a phase tracking reference signal.
  • the information of the antenna or the antenna group may be the identification information of the antenna or the antenna group, the port information of the antenna or the antenna group, or the beam identification information corresponding to the antenna or the antenna group.
  • the SRS resource indication information may be information such as an SRS sequence, an SRS time-frequency location parameter, and the like.
  • the method further includes: the second communication node configuring the antenna or the antenna group according to the antenna information.
  • the second communication node may also configure the beam according to the antenna information.
  • the second communications node determines, by means of signaling, the use of the SRI domain in the DCI, the second communications node receiving the radio resource control RRC signaling sent by the first communications node, where The RRC signaling is used to configure the use of the SRI domain.
  • the use of the SRI field in the DCI includes at least one of: an SRS resource indication for configuring a PUSCH transmission in a codebook mode, and a physical uplink shared channel PUSCH configured to be a non-codebook mode.
  • the SRS resource indication information includes at least one of: when configured as a codebook mode for PUSCH transmission SRS resource indication information, SRS resource indication information when configured as a non-codebook mode PUSCH transmission;
  • the antenna information includes at least one of: antenna information for antenna switching of SRS, antenna information for antenna switching of PUSCH .
  • the SRI domain may be used to indicate one or more of the foregoing four uses, and the RRC signaling may carry multiple bits for indicating the indication manner.
  • the SRI field is used to indicate one of the foregoing four uses, and 2 bits in the RRC signaling are used to indicate the indication manner, where 00 represents the SRS resource used in the SRI domain for configuring the PUSCH transmission in the codebook mode.
  • the indication 01 indicates an SRS resource indication when the SRI domain is configured for the physical uplink shared channel PUSCH transmission in the non-codebook mode, 10 indicates the antenna handover for the SRI domain for measuring the reference signal SRS, and 11 indicates that the SRI domain is used for physical uplink sharing. Antenna switching of channel PUSCH.
  • the SRI domain can be fixedly set to indicate one or more of the above four uses.
  • the SRI domain is fixed and carries the two types of SRS resource indication information and the two types of antenna information.
  • the second communication node determines the use of the SRI domain in the DCI in a predefined manner, including: predefining the use of the SRI domain in the DCI related to the recently configured SRS usage, in the recently configured SRS In the case where the antenna switching is used, the SRI field in the DCI is used for antenna switching of the SRS or antenna switching for the PUSCH.
  • the SRS use may also be referred to as an SRS type.
  • the SRI domain can be configured for antenna switching of the SRS or antenna switching for the PUSCH by higher layer signaling.
  • the recently configured SRS usage may be the most recently configured SRS usage before the time slot or symbol where the DCI is located, or may be after the DCI is located in the time slot or symbol before the DCI takes effect. The most recently configured SRS use.
  • another method for information transmission in this embodiment is applied to the second communication node, and includes the following steps.
  • Step 4010 The second communication node receives the DCI sent by the first communication node, and obtains the antenna information according to the existing signaling in the DCI according to a predefined manner, or learns the antenna through the CRC of the DCI according to a predefined manner. information.
  • Step 4020 The second communication node configures an antenna or an antenna group according to the antenna information.
  • the antenna information comprises information of an antenna or an antenna group used by the second communication node to transmit an uplink signal.
  • the second communication node may receive the antenna information transmitted by the first communication node, thereby implementing flexible switching of the antenna or antenna group for transmitting the uplink signal. Moreover, in this manner, the transmission antenna information does not occupy more resources, thereby improving resource utilization.
  • the first communication node may be a base station of a macro cell, a base station or a transmission node of a small cell, a sending node in a high frequency communication system, a sending node in an Internet of Things system, and the like.
  • the two communication nodes may be nodes in a communication system such as a user terminal (UE), a mobile phone, a portable device, or a car.
  • the uplink signal may be an SRS, or an uplink demodulation reference signal, or an uplink signal for random access, or a PUSCH signal, or a phase tracking reference signal.
  • the information of the antenna or the antenna group may be the identification information of the antenna or the antenna group, the port information of the antenna or the antenna group, or the beam identification information corresponding to the antenna or the antenna group.
  • the antenna information is obtained according to the existing signaling in the DCI, and the antenna information may be obtained through an indication that the existing signaling in the DCI is implicit or explicit.
  • the implicit indication means that the signaling has other uses and can be used to indicate the antenna information if not used.
  • the obtaining the antenna information according to the existing signaling in the DCI according to the predefined manner includes: when the received PUSCH resource allocation information in the DCI is type 0 (type 0)
  • the antenna information is obtained according to a virtual resource block in the DCI to a physical resource block mapping bit (VRB-to-PRB mapping bit) or a frequency hopping flag.
  • the PUSCH resource is allocated to type 0, and the VRB-to-PRB mapping bit and the Frequency hopping flag in the downlink control information are not used, and may be used to indicate the antenna information.
  • the antenna 0 or the antenna group 0 used by the second communication node sends an uplink signal.
  • the antenna 1 or the antenna group 1 used by the second communication node transmits an uplink signal. Therefore, the channel reciprocity problem when the number of transmission links of the second communication node and the number of reception links are inconsistent can be solved, for example, the case where the second communication node is configured as 1T2R, 2T4R, and 4T8R.
  • T is the number of transmit links
  • R is the number of receive links.
  • 1T2R indicates that the number of transmit links is 1, and the number of receive links is two.
  • the obtaining, by the CRC of the DCI, the antenna information according to a predefined manner comprising: obtaining the antenna information according to an antenna selection mask used for performing CRC check on the DCI.
  • the port information of the corresponding antenna or antenna group can be known.
  • the method further includes: the second communication node transmitting antenna configuration information to the first communication node, where the antenna configuration information includes at least one of: an antenna or an antenna group corresponding to each radio frequency link Information; such as (antenna 0, antenna 1), (antenna 2, antenna 3); antenna numbering.
  • the antenna configuration information includes at least one of: an antenna or an antenna group corresponding to each radio frequency link Information; such as (antenna 0, antenna 1), (antenna 2, antenna 3); antenna numbering.
  • the numbering manner of the antenna may include: sequential number, for example (antenna 0, antenna 1, antenna 2, antenna 3) and cross-polarization number, for example (antenna 0, antenna 2, antenna 1, antenna) 3).
  • the method further includes: the second communication node determining, by the first communication node, an association relationship between the SRS resource port and the antenna port in a predefined manner, as shown in Table 2 or Table 3 or Table 4 or Table 5 or Table 6 or Table 7.
  • the relationship between the SRS resource port and the antenna port when 1T8R, 2T8R, and 4T8R is defined.
  • the SRS resource port and the antenna The association relationship of the ports is shown in Table 3.
  • the SRS transmission enables the first communication node to utilize the channel reciprocity to support downlink data transmission.
  • the antenna switching of the uplink signal and the antenna switching of the SRS can be established.
  • the embodiment also provides an apparatus for transmitting information, which is used to implement the foregoing embodiments and implementation manners, and has not been described again.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the devices described in the following embodiments may be implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • an apparatus for information transmission in this embodiment is applied to a first communication node, corresponding to the first solution, and includes: a first configuration module 51, configured to configure downlink control by signaling or a predefined manner.
  • the information in the DCI is used to measure the reference signal resource identifier SRI domain.
  • the first sending module 52 is configured to carry the antenna information and the measurement reference signal SRS resource indication information in the SRI domain in the DCI according to the use of the SRI domain in the DCI.
  • At least one of the DCI is sent to the second communication node; wherein the antenna information includes information of an antenna or an antenna group used by the second communication node to send an uplink signal, where the SRS resource indication information is used to indicate The second communication node sends the SRS resource used by the physical uplink shared channel PUSCH.
  • the first communication node may transmit antenna information to the second communication node, thereby implementing flexible switching of the antenna or antenna group for transmitting the uplink signal.
  • the first configuration module 51 is configured to configure, by way of signaling, the measurement reference signal resource identifier SRI field in the downlink control information DCI by sending a wireless to the second communication node.
  • the resource controls RRC signaling, and the RRC signaling is used to configure the use of the SRI domain.
  • the use of the SRI field in the DCI includes at least one of: an SRS resource indication for configuring a PUSCH transmission in a codebook mode, and a physical uplink shared channel PUSCH configured to be a non-codebook mode.
  • the SRS resource indication information includes at least one of: when configured as a codebook mode for PUSCH transmission SRS resource indication information, SRS resource indication information when configured as a non-codebook mode PUSCH transmission;
  • the antenna information includes at least one of: antenna information for antenna switching of SRS, antenna information for antenna switching of PUSCH .
  • the first configuration module 51 is configured to configure a reference signal resource identifier SRI field in the downlink control information DCI in a predefined manner by predefining the SRI domain in the DCI.
  • the use is related to the recently configured SRS use, in the case where the recently configured SRS use is antenna switching, the SRI field in the DCI is used for antenna switching of SRS or antenna switching for PUSCH.
  • the method further includes: a first receiving module, configured to receive antenna configuration information sent by the second communications node, where the antenna configuration information includes at least one of: an antenna or an antenna corresponding to each radio frequency link Group information; the way the antenna is numbered.
  • the numbering manner of the antenna includes at least one of the following: a sequence number and a cross-polarization number.
  • the method further includes: a first determining module, configured to determine, in an over-predefined manner, an association relationship between the SRS resource port and the antenna port by the second communications node.
  • another apparatus for information transmission in this embodiment is applied to a first communication node, and corresponds to a second scheme, including: a second configuration module 61, configured to configure antenna information in a predefined manner;
  • the second sending module 62 is configured to indicate the antenna information by using existing signaling in the DCI, or to indicate the antenna information by using a cyclic redundancy check code CRC of the DCI, and send the DCI to the second communications node, where
  • the antenna information includes information of an antenna or an antenna group used by the second communication node to transmit an uplink signal.
  • the first communication node may transmit antenna information to the second communication node, thereby implementing flexible switching of the antenna or antenna group for transmitting the uplink signal. Moreover, in this manner, the transmission antenna information does not occupy more resources, thereby improving resource utilization.
  • the second sending module 62 is configured to indicate the antenna information by using existing signaling in the DCI: if the PUSCH resource allocation information carried in the DCI is type 0. And indicating the antenna information by mapping a bit or a frequency hopping identifier to a physical resource block by using a virtual resource block in the DCI.
  • the second sending module 62 is configured to indicate the antenna information by using a cyclic redundancy check code CRC of the DCI by using an antenna selection mask and a wireless network corresponding to the second communication node.
  • the temporary identifier RNTI performs a CRC check on the DCI, and the antenna selection mask indicates the antenna information.
  • the method further includes: a second receiving module, configured to receive antenna configuration information sent by the second communications node, where the antenna configuration information includes at least one of: an antenna or an antenna corresponding to each radio frequency link Group information; the way the antenna is numbered.
  • the numbering manner of the antenna includes at least one of the following: a sequence number and a cross-polarization number.
  • the method further includes: a second determining module, configured to determine, by using a predefined manner, the association relationship between the SRS resource port and the antenna port with the second communications node.
  • another apparatus for information transmission in this embodiment is applied to a second communication node, corresponding to the first solution, including: a third determining module 71, configured to determine DCI by signaling or a predefined manner.
  • the third receiving module 72 is configured to receive the DCI sent by the first communication node, and parse the information carried by the SRI domain according to the use of the SRI domain in the DCI to learn the antenna information and the SRS resource. At least one of the indication information; wherein the antenna information includes information of an antenna or an antenna group used by the second communication node to send an uplink signal, where the SRS resource indication information is used to indicate that the second communication node sends SRS resources used by the physical uplink shared channel PUSCH.
  • the second communication node may receive the antenna information transmitted by the first communication node, thereby implementing flexible switching of the antenna or antenna group for transmitting the uplink signal.
  • the method further includes: a third configuration module, configured to configure the antenna or the antenna group according to the antenna information.
  • the third determining module 71 is configured to determine, by means of signaling, the use of the SRI domain in the DCI by: the second communication node receiving the radio resource control sent by the first communications node RRC signaling, the RRC signaling is used to configure the use of the SRI domain.
  • the third determining module 71 is configured to determine the use of the SRI domain in the DCI in a predefined manner by predefining the use of the SRI domain in the DCI related to the recently configured SRS usage.
  • the SRI field in the DCI is used for antenna switching of the SRS or antenna switching for the PUSCH.
  • the method further includes: a third sending module, configured to send antenna configuration information to the second node, where the antenna configuration information includes at least one of: information of an antenna or an antenna group corresponding to each radio frequency link; The way the antenna is numbered.
  • a third sending module configured to send antenna configuration information to the second node, where the antenna configuration information includes at least one of: information of an antenna or an antenna group corresponding to each radio frequency link; The way the antenna is numbered.
  • the method further includes: a fourth determining module, configured to determine, by using a predefined manner, the association relationship between the SRS resource port and the antenna port with the first communications node.
  • another apparatus for information transmission in this embodiment is applied to a second communication node, and corresponds to a second scheme, including: a fourth receiving module 81, configured to receive a DCI sent by the first communication node, according to In a predefined manner, the antenna information is obtained according to the existing signaling in the DCI, or the antenna information is obtained through the CRC of the DCI in a predefined manner; the fourth configuration module 82 is configured to connect the antenna according to the antenna information. Or configuring the antenna group; wherein the antenna information includes information of an antenna or an antenna group used by the second communication node to transmit an uplink signal.
  • the second communication node may receive the antenna information transmitted by the first communication node, thereby implementing flexible switching of the antenna or antenna group for transmitting the uplink signal. Moreover, in this manner, the transmission antenna information does not occupy more resources, thereby improving resource utilization.
  • the method further includes: a fourth sending module, configured to send antenna configuration information to the first communications node, where the antenna configuration information includes at least one of: an antenna or an antenna group corresponding to each radio frequency link Information; the way the antenna is numbered.
  • a fourth sending module configured to send antenna configuration information to the first communications node, where the antenna configuration information includes at least one of: an antenna or an antenna group corresponding to each radio frequency link Information; the way the antenna is numbered.
  • the method further includes: a fifth determining module, configured to determine, by using a predefined manner, the association relationship between the SRS resource port and the antenna port with the first communications node.
  • the embodiment further provides a first communication node, comprising: a processor; a memory configured to store the processor executable instructions; and a transmission device configured to perform information transceiving and communication according to the control of the processor;
  • the processor is configured to: configure the use of the measurement reference signal resource identifier SRI field in the downlink control information DCI by signaling or a predefined manner; according to the use of the SRI domain in the DCI, pass the SRI domain in the DCI Transmitting, by the at least one of the antenna information and the measurement reference signal SRS resource indication information, the DCI to a second communication node, where the antenna information comprises an antenna or an antenna group used by the second communication node to send an uplink signal And the SRS resource indication information is used to indicate that the second communication node sends the SRS resource used by the physical uplink shared channel PUSCH.
  • the embodiment of the present invention further provides a first communication node, including: a processor; a memory configured to store the processor executable instructions; and a transmission device configured to perform information transmission and reception communication according to the control of the processor;
  • the processor is configured to perform the following operations: configuring antenna information in a predefined manner; indicating the antenna information by existing signaling in the DCI, or indicating the antenna information by using a cyclic redundancy check code CRC of the DCI,
  • the DCI is sent to a second communication node; wherein the antenna information includes information of an antenna or an antenna group used by the second communication node to transmit an uplink signal.
  • the embodiment further provides a second communication node, including: a processor; a memory configured to store the processor executable instructions; and a transmission device configured to perform information transceiving and communication according to the control of the processor;
  • the processor is configured to: determine the use of the SRI domain in the DCI by signaling or a predefined manner; receive the DCI sent by the first communication node, and parse the SRI according to the use of the SRI domain in the DCI And the at least one of the antenna information and the SRS resource indication information, where the antenna information includes information about an antenna or an antenna group for transmitting an uplink signal, where the SRS resource indication information is used to indicate the
  • the second communication node transmits the SRS resource used by the physical uplink shared channel PUSCH.
  • the embodiment further provides a second communication node, including: a processor; a memory configured to store the processor executable instructions; and a transmission device configured to perform information transceiving and communication according to the control of the processor;
  • the processor is configured to: receive the DCI sent by the first communication node, learn the antenna information according to the existing signaling in the DCI, or obtain the CRC through the DCI in a predefined manner according to a predefined manner.
  • Antenna information configuring an antenna or an antenna group according to the antenna information; wherein the antenna information includes information of an antenna or an antenna group for transmitting an uplink signal.
  • the embodiment further provides a computer readable storage medium storing computer executable instructions for the above method of information transmission.
  • the foregoing storage medium may include, but not limited to, a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk. At least one medium that can store program code.
  • modules or steps of the above-described embodiments can be implemented with a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices.
  • the above modules or steps may be implemented by program code executable by the computing device, such that the modules or steps may be stored in the storage device by the computing device, or the modules or steps may be separately fabricated.
  • the integrated circuit module is implemented by making a plurality of modules or steps of the above modules or steps into a single integrated circuit module. As such, the disclosure is not limited to any specific combination of hardware and software.

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

Abstract

La présente invention concerne un procédé et un appareil de transmission d'informations, ainsi qu'un nœud de communication. Le procédé comprend les étapes au cours desquelles : un premier nœud de communication configure, au moyen d'une signalisation ou d'une manière prédéfinie, l'utilisation d'un domaine d'identifiant de ressource de signal (SRI) de référence de sondage dans des informations de commande de liaison descendante (DCI) ; et le premier nœud de communication envoie, en fonction de l'utilisation du domaine de SRI dans les DCI, les DCI à un second nœud de communication en utilisant des informations d'antenne véhiculées dans le domaine de SRI dans les DCI et/ou des informations d'indication de ressource de signal de référence de sondage (SRS).
PCT/CN2019/077031 2018-03-05 2019-03-05 Procédé et appareil de transmission d'informations et nœud de communication Ceased WO2019170089A1 (fr)

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