WO2019137011A1 - Procédé de communication, et procédé de détermination de ressource de liaison montante - Google Patents

Procédé de communication, et procédé de détermination de ressource de liaison montante Download PDF

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Publication number
WO2019137011A1
WO2019137011A1 PCT/CN2018/101930 CN2018101930W WO2019137011A1 WO 2019137011 A1 WO2019137011 A1 WO 2019137011A1 CN 2018101930 W CN2018101930 W CN 2018101930W WO 2019137011 A1 WO2019137011 A1 WO 2019137011A1
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WO
WIPO (PCT)
Prior art keywords
downlink
resource
resources
uplink
uplink resource
Prior art date
Application number
PCT/CN2018/101930
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English (en)
Chinese (zh)
Inventor
王达
薛祎凡
王键
Original Assignee
华为技术有限公司
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Filing date
Publication date
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Publication of WO2019137011A1 publication Critical patent/WO2019137011A1/fr

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    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a communication method and an uplink resource determining method.
  • TDD time division duplexing
  • CA carrier aggregation
  • the network device passes through three physical downlink control channel (PDCCH) resources.
  • the three DCIs that are sent are indicated to the terminal device by three physical downlink shared channel (PDSCH) resources.
  • the terminal device selects a target DCI that is better than the network device.
  • the PDCCH resource occupied by the target DCI for example, the last DCI sent by the base station and the PDCCH resource occupied by the last DCI, determine a physical uplink control channel configured by the network device for transmitting the UCI configured by the terminal device (physical uplink control channel) , PUCCH) resources. In this way, after the terminal device receives the downlink data through the three PDSCH resources, the downlink data is received on the PUCCH resource.
  • the DCI sent by the network device to the terminal device may be lost or the terminal device does not receive the situation.
  • the network device sends 3 DCIs to the terminal device, but during the transmission, the third DCI If it is lost, the terminal device only receives the first DCI and the second DCI. The terminal device does not know that the third DCI is lost. Therefore, the terminal device determines the PUCCH resource for transmitting the UCI according to the last received DCI, that is, the second DCI sent by the network device and the PDCCH resource occupied by the DCI. .
  • the last DCI received by the terminal device is not the last DCI sent by the network device, and the PDCCH resource occupied by the last DCI received by the terminal device is not the last PDCCH resource scheduled by the network device, and the terminal device determines
  • the PUCCH resource used for transmitting the UCI is not the PUCCH resource that the network device actually indicates to the terminal device for transmitting the UCI, thereby causing the PUCCH resource to be determined incorrectly, causing conflicts with the PUCCH resources used by other terminal devices, and the network device may not receive the PUCCH resource.
  • the ACK/NACK response fed back by the terminal device is not the last DCI sent by the network device, and the PDCCH resource occupied by the last DCI received by the terminal device is not the last PDCCH resource scheduled by the network device, and the terminal device determines
  • the PUCCH resource used for transmitting the UCI is not the PUCCH resource that the network device actually indicates to the terminal device for transmitting the UCI, thereby causing the PUCCH resource to be
  • the embodiment of the present application provides a communication method and an uplink resource determining method, which are used to solve the problem that the PUCCH resource conflicts with other terminal devices caused by the terminal device, and the network device may not receive the terminal device. Feedback ACK/NACK response issue.
  • the embodiment of the present application provides a communication method, including: the network device sends downlink information to the terminal device on the N downlink resources, where the N downlink resources include at least two first downlink resources, where The at least two first downlink resources are used to determine an uplink resource used by the terminal device to send the uplink control information UCI, or one of the at least two first downlink resources is used to determine the uplink resource,
  • the downlink resource is a downlink control channel resource and/or a downlink shared channel resource; the network device receives, on the uplink resource, a UCI sent by the terminal device, where the N is a positive integer greater than 1.
  • the network device uses at least two first downlink resources to indicate an uplink resource that is used by the terminal device to send the UCI, so that when the terminal device receives the at least two first downlink resources, If any one of the downlink information is used, the uplink resource used for transmitting the UCI is determined according to the downlink resource that is received by the received downlink information, and the probability that at least two first downlink resources are simultaneously lost is low, so The terminal device determines the correct rate of the uplink resource used for transmitting the UCI, and does not conflict with the uplink resource that the other terminal device sends the UCI, and further improves the transmission reliability of the ACK/NACK response.
  • each of the at least two first downlink resources determines that the uplink resources used by the terminal device to send the UCI are the same.
  • the at least two first downlink resources include: a first downlink resource of the N downlink resources and a last downlink resource of the N downlink resources; or a first one of the N downlink resources and a second one of the N downlink resources; or a last one of the N downlink resources; or the N downlink resources Any three downstream resources.
  • the at least two first downlink resources may be multiple combinations of the N downlink resources, so that the network device may configure the at least two first downlink resources according to actual usage requirements, and improve the network device. Flexibility.
  • the resources of the downlink control channel include: a frequency domain resource of the downlink control channel, a time domain resource of the downlink control channel, a code domain resource of the downlink control channel, and the downlink One or more of the port numbers of the control channel;
  • the resources of the downlink shared channel include: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel, and a code domain resource of the downlink shared channel And one or more of the port numbers of the downlink shared channel.
  • the embodiment of the present application provides an uplink resource determining method, including: receiving, by a terminal device, K downlink information sent by a network device; if the K downlink information includes a first downlink sent by the network device The information, the terminal device determines, according to the downlink resource occupied by the first downlink information, an uplink resource used for sending the uplink control information UCI; if the K downlink information does not include the first downlink sent by the network device And the terminal device determines, according to the downlink resource that is used by the last received downlink information, the uplink resource that is used to send the UCI; where the downlink resource is a downlink control channel resource and/or Downstream shared channel resource, the K being a positive integer greater than or equal to zero.
  • the terminal device may use the downlink resource occupied by the first downlink information sent by the network device or the downlink resource occupied by the last downlink information received by the terminal device to determine an uplink resource used for sending the UCI, so that the terminal
  • the device determines that any one of the two downlink information is received, the device can determine the uplink resource that is actually indicated by the network device, and the probability that the at least two first downlink resources are simultaneously lost is low, so the device can be improved.
  • the terminal device determines the correct rate of the uplink resource used for transmitting the UCI, and does not conflict with the uplink resource that the other terminal device sends the UCI, and further improves the transmission reliability of the ACK/NACK response.
  • the downlink control channel resource includes: a frequency domain resource of the downlink control channel, a time domain resource of the downlink control channel, a code domain resource of the downlink control channel, and the downlink control.
  • the port numbers of the channel; the downlink shared channel resource includes: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel, a code domain resource of the downlink shared channel, and a port number of the downlink shared channel.
  • the downlink shared channel resource includes: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel, a code domain resource of the downlink shared channel, and a port number of the downlink shared channel.
  • the method further includes: if the first uplink resource is different from the second uplink resource, the terminal device determines to lose the last downlink information sent by the network device; wherein, the first uplink The resource is an uplink resource used by the terminal device to send the UCI according to the downlink resource occupied by the received second-to-last downlink information, where the second uplink resource is the last received by the terminal device according to the The uplink resource used for transmitting the UCI determined by the downlink resource occupied by the downlink information.
  • the terminal device may determine, according to the downlink resources that are received by the second-to-last downlink information and the last downlink information, whether the last downlink information sent by the network device is lost, so that when the terminal device is sending In the UCI, the NACK response to the last downlink data that is lost can be increased, so that when receiving the UCI, the base station can determine that the terminal device has lost the last downlink data without blind decoding.
  • the method further includes: if the third uplink resource is different from the fourth uplink resource, the terminal device determines to lose the last downlink information sent by the network device; wherein, the third The uplink resource is an uplink resource used by the terminal device to send the UCI according to the downlink resource occupied by the received first downlink information, where the fourth uplink control channel resource is received by the terminal device according to the The uplink resource used by the last downlink information is used to send the uplink resource of the UCI.
  • the terminal device may determine, according to the downlink resources that are respectively occupied by the received first downlink information and the last downlink information, whether the last downlink information sent by the network device is lost, so that when the terminal device is transmitting the UCI
  • the NACK response to the last downlink data that is lost may be increased, so that when receiving the UCI, the base station can determine that the terminal device has lost the last downlink data without blind decoding.
  • the method for determining an uplink resource includes: the terminal device receives K downlink information sent by the network device; and if the K downlink information includes the first downlink sent by the network device, The information, the terminal device determines, according to the downlink resource occupied by the first downlink information, an uplink resource used for sending the uplink control information UCI; if the K downlink information does not include the first downlink sent by the network device And determining, by the terminal device, an uplink resource used for sending the UCI according to a downlink resource that is received by the second downlink information that is sent by the network device, where the downlink information is received by the network device;
  • the resource is a downlink control channel resource and/or a downlink shared channel resource, and the K is a positive integer greater than or equal to zero.
  • the terminal device may use the downlink resource occupied by the first downlink information sent by the network device or the downlink resource occupied by the second downlink information sent by the network device to determine an uplink resource used for sending the UCI, so that the terminal device When it is determined that any one of the two downlink information is received, the uplink resource that is actually indicated by the network device can be determined, and the probability that the at least two first downlink resources are simultaneously lost is low, so the terminal can be improved.
  • the device determines the correct rate of the uplink resource used for transmitting the UCI, and does not conflict with the uplink resource that the other terminal device sends the UCI, and further improves the transmission reliability of the ACK/NACK response.
  • the downlink control channel resource includes: a frequency domain resource of the downlink control channel, a time domain resource of the downlink control channel, a code domain resource of the downlink control channel, and the downlink control.
  • the downlink shared channel resource includes: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel,
  • One or more of a code domain resource of a downlink shared channel and a port number of a downlink shared channel are One or more of a code domain resource of a downlink shared channel and a port number of a downlink shared channel.
  • the method further includes: if the first uplink resource is different from the second uplink resource, the terminal device determines to lose the last downlink information sent by the network device; wherein, the first uplink The resource is an uplink resource used by the terminal device to send the UCI according to the downlink resource occupied by the received second-to-last downlink information, where the second uplink resource is the last received by the terminal device according to the The uplink resource used for transmitting the UCI determined by the downlink resource occupied by the downlink information.
  • the terminal device may determine, according to the downlink resources that are received by the second-to-last downlink information and the last downlink information, whether the last downlink information sent by the network device is lost, so that when the terminal device is sending In the UCI, the NACK response to the last downlink data that is lost can be increased, so that when receiving the UCI, the base station can determine that the terminal device has lost the last downlink data without blind decoding.
  • the method further includes: if the third uplink resource is different from the fourth uplink resource, the terminal device determines to lose the last downlink information sent by the network device; wherein, the third The uplink resource is an uplink resource used by the terminal device to send the UCI according to the downlink resource occupied by the received first downlink information, where the fourth uplink control channel resource is received by the terminal device according to the The uplink resource used by the last downlink information is used to send the uplink resource of the UCI.
  • the terminal device may determine, according to the downlink resources that are respectively occupied by the received first downlink information and the last downlink information, whether the last downlink information sent by the network device is lost, so that when the terminal device is transmitting the UCI
  • the NACK response to the last downlink data that is lost may be increased, so that when receiving the UCI, the base station can determine that the terminal device has lost the last downlink data without blind decoding.
  • the embodiment of the present application provides a network device, including a transmitter, a processor, and a receiver, where: the sender sends a downlink to a terminal device on N downlink resources under the control of the processor.
  • Information where the N downlink resources include at least two first downlink resources, and the at least two first downlink resources are used to determine an uplink resource used by the terminal device to send uplink control information UCI, or One of the at least two first downlink resources is used to determine the uplink resource, where the downlink resource is a downlink control channel resource and/or a downlink shared channel resource; and the receiver is under the control of the processor.
  • each of the at least two first downlink resources determines that the uplink resources used by the terminal device to send the UCI are the same.
  • the at least two first downlink resources include: a first downlink resource of the N downlink resources and a last downlink resource of the N downlink resources; or a first one of the N downlink resources and a second one of the N downlink resources; or a last one of the N downlink resources; or the N downlink resources Any three downstream resources.
  • the resources of the downlink control channel include: a frequency domain resource of the downlink control channel, a time domain resource of the downlink control channel, a code domain resource of the downlink control channel, and the downlink One or more of the port numbers of the control channel;
  • the resources of the downlink shared channel include: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel, and a code domain of the downlink shared channel One or more of a resource, a port number of the downlink shared channel.
  • the embodiment of the present application provides a terminal device, including a receiver and a processor, where: the receiver receives K downlink information sent by a network device under control of the processor;
  • the processor determines, according to the downlink resource occupied by the first downlink information, an uplink resource used for sending the uplink control information UCI. If the K downlink information does not include the first downlink information sent by the network device, the processor determines, according to the downlink resource occupied by the last received downlink information in the K downlink information, for sending An uplink resource of the UCI, where the downlink resource is a downlink control channel resource and/or a downlink shared channel resource.
  • the downlink control channel resource includes: a frequency domain resource of the downlink control channel, a time domain resource of the downlink control channel, a code domain resource of the downlink control channel, and the downlink control.
  • the port numbers of the channel; the downlink shared channel resource includes: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel, a code domain resource of the downlink shared channel, and a port number of the downlink shared channel.
  • the downlink shared channel resource includes: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel, a code domain resource of the downlink shared channel, and a port number of the downlink shared channel.
  • the processor is further configured to: if the first uplink resource is different from the second uplink resource, the processor determines to lose the last downlink information sent by the network device; An uplink resource, where the processor determines, according to the downlink resource that is received by the second-to-last downlink information, is used to send the uplink resource of the UCI, where the second uplink resource is received by the processor according to the received The uplink resource used by the last downlink information is used to send the uplink resource of the UCI.
  • the processor is further configured to: if the third uplink resource is different from the fourth uplink resource, respectively, the processor determines to lose the last downlink information sent by the network device;
  • the third uplink resource is an uplink resource used by the processor to send the UCI according to the downlink resource occupied by the received first downlink information, where the fourth uplink control channel resource is received by the processor according to the The uplink resource used for transmitting the UCI determined by the downlink resource occupied by the last downlink information.
  • the embodiment of the present application provides another terminal device, including a receiver and a processor, where: the receiver receives K downlink information sent by the network device under the control of the processor;
  • the processor determines, according to the downlink resource occupied by the first downlink information, an uplink resource used for sending the uplink control information UCI. If the K downlink information does not include the first downlink information sent by the network device, the processor is configured to receive, according to the second downlink information, the second downlink information sent by the network device.
  • the occupied downlink resource is used to send the uplink resource of the UCI, where the downlink resource is a downlink control channel resource and/or a downlink shared channel resource.
  • the downlink control channel resource includes: a frequency domain resource of the downlink control channel, a time domain resource of the downlink control channel, a code domain resource of the downlink control channel, and the downlink control.
  • the port numbers of the channel; the downlink shared channel resource includes: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel, a code domain resource of the downlink shared channel, and a port number of the downlink shared channel.
  • the downlink shared channel resource includes: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel, a code domain resource of the downlink shared channel, and a port number of the downlink shared channel.
  • the processor is further configured to: if the first uplink resource is different from the second uplink resource, the processor determines to lose the last downlink information sent by the network device; An uplink resource, where the processor determines, according to the downlink resource that is received by the second-to-last downlink information, is used to send the uplink resource of the UCI, where the second uplink resource is received by the processor according to the received The uplink resource used by the last downlink information is used to send the uplink resource of the UCI.
  • the processor is further configured to: if the third uplink resource is different from the fourth uplink resource, respectively, the processor determines to lose the last downlink information sent by the network device;
  • the third uplink resource is an uplink resource used by the processor to send the UCI according to the downlink resource occupied by the received first downlink information, where the fourth uplink control channel resource is received by the processor according to the The uplink resource used for transmitting the UCI determined by the downlink resource occupied by the last downlink information.
  • the embodiment of the present application provides another network device, including: a sending module, configured to send downlink information to a terminal device on the N downlink resources, where the N downlink resources include at least two first a line resource, where the at least two first downlink resources are used to determine an uplink resource used by the terminal device to send uplink control information UCI, or one of the at least two first downlink resources is used to determine a location An uplink resource, where the downlink resource is a downlink control channel resource and/or a downlink shared channel resource;
  • a receiving module configured to receive, on the uplink resource, a UCI sent by the terminal device.
  • each of the at least two first downlink resources determines that the uplink resources used by the terminal device to send the UCI are the same.
  • the at least two first downlink resources include: a first downlink resource of the N downlink resources and a last downlink resource of the N downlink resources; or a first one of the N downlink resources and a second one of the N downlink resources; or a last one of the N downlink resources; or the N downlink resources Any three downstream resources.
  • the resources of the downlink control channel include: a frequency domain resource of the downlink control channel, a time domain resource of the downlink control channel, a code domain resource of the downlink control channel, and the downlink One or more of the port numbers of the control channel;
  • the resources of the downlink shared channel include: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel, and a code domain of the downlink shared channel One or more of a resource, a port number of the downlink shared channel.
  • the embodiment of the present application provides another terminal device, including: a receiving module, configured to receive K downlink information sent by a network device, and a determining module, configured to: if the K downlink information is included in the network The first downlink information sent by the device, the uplink resource used for sending the uplink control information UCI is determined according to the downlink resource occupied by the first downlink information; if the K downlink information does not include the network device And determining, by the downlink information, the uplink resource used for sending the UCI, where the downlink resource is the downlink control channel resource and/or the downlink, according to the downlink resource occupied by the last received downlink information of the K downlink information. Shared channel resources.
  • the downlink control channel resource includes: a frequency domain resource of the downlink control channel, a time domain resource of the downlink control channel, a code domain resource of the downlink control channel, and the downlink control.
  • the port numbers of the channel; the downlink shared channel resource includes: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel, a code domain resource of the downlink shared channel, and a port number of the downlink shared channel.
  • the downlink shared channel resource includes: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel, a code domain resource of the downlink shared channel, and a port number of the downlink shared channel.
  • the determining module is further configured to: if the first uplink resource is different from the second uplink resource, determine to lose the last downlink information sent by the network device; where the first uplink resource is The determining module is configured to send, according to the downlink resource that is received by the second-to-last downlink information, the uplink resource that is used to send the UCI, where the second uplink resource is the last downlink information that is received by the determining module according to the determining module.
  • the uplink resource used for transmitting the UCI determined by the occupied downlink resource.
  • the determining module is further configured to: if the third uplink resource is different from the fourth uplink resource, determine to lose the last downlink information sent by the network device; where the third uplink resource And determining, by the determining module, the uplink resource used to send the UCI according to the downlink resource occupied by the received first downlink information, where the fourth uplink control channel resource is the last one received by the determining module.
  • the uplink resource used for transmitting the UCI determined by the downlink resource occupied by the downlink information.
  • the embodiment of the present application provides another terminal device, including: a receiving module, configured to receive K downlink information sent by a network device; and a determining module, configured to: if the K downlink information is included in the network The first downlink information sent by the device, the uplink resource used for sending the uplink control information UCI is determined according to the downlink resource occupied by the first downlink information; if the K downlink information does not include the network device a downlink information, where the uplink resource used for sending the UCI is determined according to the downlink resource that is received by the second downlink information that is sent by the network device, where the downlink resource is used; It is a downlink control channel resource and/or a downlink shared channel resource.
  • the downlink control channel resource includes: a frequency domain resource of the downlink control channel, a time domain resource of the downlink control channel, a code domain resource of the downlink control channel, and the downlink control.
  • the port numbers of the channel; the downlink shared channel resource includes: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel, a code domain resource of the downlink shared channel, and a port number of the downlink shared channel.
  • the downlink shared channel resource includes: a frequency domain resource of the downlink shared channel, a time domain resource of the downlink shared channel, a code domain resource of the downlink shared channel, and a port number of the downlink shared channel.
  • the determining module is further configured to: if the first uplink resource is different from the second uplink resource, determine to lose the last downlink information sent by the network device; where the first uplink resource is The determining module is configured to send, according to the downlink resource that is received by the second-to-last downlink information, the uplink resource that is used to send the UCI, where the second uplink resource is the last downlink information that is received by the determining module according to the determining module.
  • the uplink resource used for transmitting the UCI determined by the occupied downlink resource.
  • the determining module is further configured to: if the third uplink resource is different from the fourth uplink resource, determine to lose the last downlink information sent by the network device; where the third uplink resource And determining, by the determining module, the uplink resource used to send the UCI according to the downlink resource occupied by the received first downlink information, where the fourth uplink control channel resource is the last one received by the determining module.
  • the uplink resource used for transmitting the UCI determined by the downlink resource occupied by the downlink information.
  • an embodiment of the present application provides a computer readable storage medium, where the computer storage medium stores an instruction, when the instruction is run on a computer, causing the computer to perform the first to third aspects.
  • an embodiment of the present application provides a computer program product comprising instructions, the computer program product comprising instructions, when the instructions are run on a computer, causing the computer to perform the first to third The method of any of the embodiments.
  • the embodiment of the present application provides a data transmission chip, where the chip is connected to a memory, and is configured to read and execute a software program stored in the memory to implement implementations of the first aspect to the third aspect.
  • the embodiment of the present application provides a communication system, including the network device and the terminal device according to the embodiments in the fourth to seventh aspects.
  • a network device configured to perform the method of any of the embodiments of the first aspect.
  • a terminal device configured to perform the method of any of the first aspect and the second aspect embodiments.
  • a sixteenth aspect a network device, comprising: at least one processor, for performing the method of any of the first aspect; and the at least one processor Coupled memory.
  • a seventeenth aspect a terminal device, comprising: at least one processor, for performing the method of any of the second aspect or the third aspect; and the at least one Processor coupled memory.
  • FIG. 1 is a schematic diagram of PDSCH resources corresponding to three PDCCH resources scheduled by a terminal device to a network device in the prior art
  • FIG. 2 is an application scenario of an embodiment of the present application
  • FIG. 3 is a flowchart of a method for determining, by a terminal device, a PUCCH resource for transmitting UCI in the prior art
  • FIG. 4 is a schematic diagram of four PUCCH resource sets configured by a network device to a terminal device in the prior art
  • FIG. 5 is a schematic diagram of a CCE occupied by each PDCCH resource in the prior art
  • FIG. 6 is a flowchart of an example of a communication method and an uplink resource determining method according to an embodiment of the present application
  • FIG. 7 is a schematic diagram of a base station scheduling multiple PDCCH resources by using a CA mode according to an embodiment of the present disclosure
  • FIG. 8 is a flowchart of another example of a communication method and an uplink resource determining method according to an embodiment of the present application.
  • FIG. 9 is a flowchart of another example of a communication method and an uplink resource determining method according to an embodiment of the present application.
  • FIG. 10 is a structural block diagram of a network device according to an embodiment of the present application.
  • FIG. 11 is a structural block diagram of a terminal device according to an embodiment of the present application.
  • FIG. 12 is a structural block diagram of another network device according to an embodiment of the present disclosure.
  • FIG. 13 is a structural block diagram of another network device according to an embodiment of the present disclosure.
  • FIG. 14 is a structural block diagram of another terminal device according to an embodiment of the present disclosure.
  • FIG. 15 is a structural block diagram of another network device according to an embodiment of the present application.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, for example, New Radio (NR) system, Wireless Fidelity (WiFi), Worldwide Interoperability for Microwave Access (WiMAX), and the whole world.
  • Global System of Mobile communication (GSM) system Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (General Packet) Radio Service, GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, Universal Mobile Telecommunication System (UMTS), and third generation The 3rd Generation Partnership Project (3GPP) related cellular system and the like, and the fifth generation mobile communication system (The Fifth Generation, 5G) and the like.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • General Packet Radio Service General Packet Radio Service
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced
  • the communication system can also be applied to the communication technology of the future.
  • the system described in the embodiment of the present application is for explaining the technical solution of the embodiment of the present application, and does not constitute the technical solution provided by the embodiment of the present application.
  • the technical solutions provided by the embodiments of the present application are applicable to similar technical problems as the network architecture evolves.
  • a network device which may also be called an access network device or a base station, may be a gNB (gNode B), and may be an ordinary base station (for example, a base station (NodeB, NB) in a WCDMA system, and an evolved type in an LTE system.
  • NR controller New Radio Controller
  • It may be a new wireless base station, which may be a radio remote module, may be a micro base station, may be a distributed network element (Distributed Unit), and may be a Transmission Reception Point (TRP) or a Transmission Point (TP).
  • TRP Transmission Reception Point
  • TP Transmission Point
  • the network device may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a network device in a future 5G network. Or a network device in the future evolved PLMN network or any other wireless access device, but the embodiment of the present application is not limited thereto.
  • CRAN Cloud Radio Access Network
  • the terminal device may be a wireless terminal device or a wired terminal device.
  • the wireless terminal device can be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device that is connected to the wireless modem.
  • the wireless terminal device can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal device, such as a mobile phone (or "cellular" phone) and has a mobile
  • RAN Radio Access Network
  • the computers of the terminal devices for example, may be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • the wireless terminal may also be referred to as a system, a subscriber unit (SU), a subscriber station (Subscriber Station, SS), a mobile station (Mobile Station, MB), a mobile station (Mobile), a remote station (Remote Station, RS), Access Point (AP), Remote Terminal (RT), Access Terminal (AT), User Terminal (UT), User Agent (UA), Terminal Equipment (User) Device, UD), or User Equipment (UE).
  • SU subscriber unit
  • SS Subscriber Station
  • MB mobile station
  • a remote station Remote Station
  • AP Access Point
  • RT Remote Terminal
  • AT Access Terminal
  • UUT User Terminal
  • User Terminal Equipment
  • UD User Equipment
  • Downlink control channel refers to the channel used to carry downlink control information (DCI).
  • DCI downlink control information
  • a physical downlink control channel (PDCCH) or a device-based physical downlink control channel (MPDCCH) in the LTE or a Narrowband physical downlink control channel (NPDCCH) Or an enhanced physical downlink control channel (EPDCCH), or a physical downlink control channel (PDCCH) in the NR.
  • PDCH physical downlink control channel
  • MPDCCH device-based physical downlink control channel
  • NPDCCH Narrowband physical downlink control channel
  • EPDCCH enhanced physical downlink control channel
  • PDCCH physical downlink control channel
  • Uplink control channel refers to a channel used to carry uplink control information (UCI).
  • UCI uplink control information
  • a physical uplink control channel (PUCCH) in LTE or a MTC physical uplink control channel (MPUCCH), or a Narrowband physical uplink control channel (NPUCCH) ), or a physical uplink control channel (PUCCH) in the NR.
  • PUCCH physical uplink control channel
  • MPUCCH MTC physical uplink control channel
  • NPUCCH Narrowband physical uplink control channel
  • PUCCH physical uplink control channel
  • Control Channel Element The frequency domain resource of the downlink control channel is composed of CCEs, that is, the frequency domain resources of the downlink control channel include several CCEs.
  • each CCE is composed of 9 resource element groups (REGs), and each REG is composed of 4 REs.
  • each CCE is composed of 6 resource element groups (REGs), each REG is composed of 1 RB, and 1 RB contains 12 REs.
  • Uplink control channel resources a format including a PUCCH, a time-frequency resource, and the like.
  • Aggregation level indicates the number of CCEs that make up one PDCCH channel.
  • the embodiments of the present application refer to ordinal numbers such as “first”, “second”, “third”, and “fourth” for distinguishing multiple objects, and are not used to define multiple objects. Order, timing, priority, or importance.
  • FIG. 2 is a schematic diagram of a possible network architecture according to an embodiment of the present application.
  • the wireless communication system of Figure 2 can include a terminal device and a base station.
  • the base station is configured to provide communication services for the terminal device and access the core network.
  • the terminal accesses the network by searching for synchronization signals, broadcast signals, and the like sent by the base station, and performs downlink data and/or uplink data transmission between the base station and the terminal device.
  • a terminal device may perform data transmission only with one base station, or may perform data transmission with multiple base stations.
  • a base station can perform data transmission with one terminal device or data transmission with multiple terminal devices. This application does not specifically limit this.
  • the step of determining, by the terminal device, the PUCCH resource for transmitting the UCI according to the DCI sent by the network device and the PDCCH resource occupied by the DCI is as follows.
  • the present invention mainly considers a case where a terminal device receives a plurality of DCIs and feeds back reception status of downlink data indicated by the plurality of DCIs on the same uplink PUCCH resource.
  • the network device configures multiple PUCCH resource sets to the terminal device.
  • the network device allocates multiple PUCCH resources to the terminal device by using high-layer signaling, for example, RRC signaling, which is usually 4-8.
  • the PUCCH resource 1 indicates that the physical resource block 1 (Physical Resource Block, PRB) and the symbol 1 are used and used.
  • PUCCH format0 transmits UCI
  • PUCCH resource 2 indicates that PRB2 and symbol 2, symbol 3, symbol 4 and symbol 5 are occupied, and UCI or the like is transmitted using PUCCH format1.
  • the multiple PUCCH resources are divided into four PUCCH resource sets according to the number of bits (2 bits) included in the PUCCH resource indicator field in the DCI, and the network device configures eight PUCCH resources for the terminal device as an example.
  • Each PUCCH resource set contains two PUCCH resources, as shown in FIG.
  • the network device determines a PUCCH resource used by the terminal device to send the UCI.
  • the network device determines one PUCCH resource from the plurality of PUCCH resources, and is used by the terminal device to send the PUCCH resource of the UCI. For example, the network device determines that the first PUCCH resource in the PUCCH resource set 01 sends the PUCCH resource of the UCI to the terminal device.
  • S303 The network device sends multiple DCIs to the terminal device on multiple PDCCH resources.
  • the network device sends the DCI to the terminal device on the multiple PDCCH resources to send the downlink data to the terminal device by using the PDSCH resource indicated by the DCI, and indicates to the terminal device that the UCI is used to send the UCI through the DCI and the PDCCH resource occupied by the last DCI.
  • PUCCH resources Each of the plurality of PDCCH resources is composed of a control channel element CCE. As shown in FIG. 5, it is assumed that the bandwidth of the control channel of the entire wireless communication system can be divided into 16 CCEs, which are respectively CCE0-CCE15. If the network device schedules 3 PDCCH resources, the first PDCCH resource can be composed of CCE0 and CCE1.
  • the second PDCCH resource may be composed of CCE2, and the third PDCCH resource may be composed of CCE3 and CCE4, and the network device sends three DCIs on the three PDCCH resources.
  • Each of the three DCIs includes, in addition to the information of the indicated PDSCH resources, an uplink control channel resource indicator (PUCCH resource indicator), where the indication information includes 2 bits, and the indication information is used to indicate to the terminal device.
  • PUCCH resource indicator uplink control channel resource indicator
  • the indication information includes 2 bits
  • the indication information is used to indicate to the terminal device.
  • Which one of the four PUCCH resource sets configured by the network device is used, and the value of the indication information corresponds to the sequence number of the PUCCH resource set. For example, if the indication information is 01, the PUCCH resource set 01 is used.
  • the formula for determining, by the terminal device, the PUCCH resource for transmitting the UCI according to the PDCCH resource occupied by the last DCI is as follows:
  • r is the sequence number of the PUCCH resource used for transmitting the UCI in the PUCCH resource set 01. Since each PUCCH resource set includes one or two PUCCH resources, for example, the network device configures eight PUCCH resources for the terminal device. Then, there are 2 PUCCH resources in each PUCCH resource set; if the network device configures less than 8 PUCCH resources for the terminal device, some PUCCH resource sets include only one PUCCH resource, and therefore, the value of the serial number is 0.
  • M is the number of PUCCH resources included in the PUCCH resource set, which is 1 or 2, where L is the aggregation level of the PDCCH occupied by the last DCI, which may be 1, 2, 4, 8, 16 and C is the last The starting CCE sequence number of the PDCCH resource occupied by one DCI. If the network device schedules 3 PDCCH resources, the PDCCH resource occupied by the last DCI is the third PDCCH resource. To enable the terminal device to determine the first PUCCH resource in the PUCCH resource set 01, the network device needs to be controlled. The ratio of the initial CCE of the third PDCCH resource to the aggregation level of the PDCCH and the modulo-calculated value of M is 0.
  • the third The sequence number of the start CCE of the PDCCH resource may be any one of 0, 4, 8, or 12.
  • the third PDCCH resource must be CCE0-CCE1, CCE4-CCE5.
  • the network device may select one of the CRRC8-CCE1 according to the actual situation, for example, determining that the third PDCCH resource is CCE0-CCE1.
  • the initial CCE sequence number and the aggregation level of the first PDCCH resource and the second PDCCH resource are not limited, and the network device can be arbitrarily configured, and then the network device sends three DCIs on the three PDCCH resources.
  • S304 The terminal device receives multiple DCIs on multiple PDCCH resources.
  • the terminal device After receiving the DCI information, the terminal device determines the PUCCH resource used for transmitting the UCI according to the received DCI and the starting CCE sequence number of the PDCCH resource occupied by the last DCI and the aggregation level of the PDCCH resource.
  • the specific determination method is as shown in the formula (1), and details are not described herein again.
  • the last DCI received by the terminal device is not the last DCI sent by the network device, and the PDCCH resource occupied by the last DCI received by the terminal device is not the network device. If the last PDCCH resource is scheduled, the PUCCH resource used by the terminal device to send the UCI is not the PUCCH resource that the network device actually indicates to the terminal device to send the UCI, thereby causing the PUCCH resource to be determined incorrectly, and sent by other terminal devices.
  • the uplink resources of the UCI conflict, and the network device may not receive the ACK/NACK response fed back by the terminal device or receive an erroneous ACK/NACK response.
  • the embodiment of the present application provides a method for determining an uplink resource, where the method includes: the network device sends downlink information to the terminal device on the N downlink resources, where the N downlink resources include at least two terminal devices that can determine the terminal device.
  • a first downlink resource for transmitting an uplink resource of the uplink control information UCI, where the at least two first downlink resources are used to determine the uplink resource, or one of the at least two first downlink resources is used for Determining the uplink resource, where the downlink resource is a downlink control channel resource and/or a downlink shared channel resource; if at least two first downlink resources are downlink resources occupied by the first downlink information sent by the network device, and the network device sends The downlink resource occupied by the last downlink information, when the terminal device receives the K downlink information sent by the network device, if the K downlink information includes the first downlink information sent by the network device, the terminal device And determining, according to the downlink resource occupied by the first downlink information, an uplink resource used for sending the uplink control information UCI, otherwise The terminal device determines, according to the downlink resource occupied by the last downlink information received in the K downlink information, the uplink resource used for sending the UCI; if the at least two first downlink
  • the received downlink resource occupied by the second downlink information sent by the network device determines an uplink resource used for sending the UCI, and after determining the uplink resource used for sending the UCI, the terminal device sends the UCI on the uplink resource. Therefore, the network device receives the UCI sent by the terminal device on the uplink resource.
  • the network device first uses at least two first downlink resources to indicate an uplink resource that is used by the terminal device to send the UCI, so that when the terminal device receives the at least two first downlink resources, If any one of the downlink information is used, the uplink resource used for transmitting the UCI is determined according to the downlink resource that is received by the received downlink information, and the probability that at least two first downlink resources are simultaneously lost is low, so The terminal device determines the correct rate of the uplink resource used for transmitting the UCI, and does not conflict with the uplink resource that the other terminal device sends the UCI, and further improves the transmission reliability of the ACK/NACK response.
  • the embodiment of the present application provides a communication method and a method for determining an uplink resource, and the process of the method is described as follows:
  • the base station sends downlink information to the terminal device on the N downlink resources.
  • the downlink resource may be a PDCCH resource and/or a PDSCH resource.
  • the downlink information may be DCI and/or downlink data, that is, the base station may send the DCI to the UE on the PDCCH resource, or may be in the PDSCH resource.
  • the uplink data is sent to the UE.
  • the base station may first send the DCI to the UE through the PDCCH resource, and send the downlink data to the UE through the PDSCH resource, or the base station simultaneously schedules the PDCCH resource to send the DCI and the PDSCH to the UE in different frequency domain locations.
  • the resource sends downlink data to the UE.
  • the downlink resource may be an MPDCCH resource or the like.
  • the following resources are PDCCH resources and PDSCH resources as an example.
  • the base station communicates with the UE by scheduling PDCCH resources and PDSCH resources.
  • a time division duplexing (TDD) method or a carrier aggregation (CA) method may be used to communicate with the UE.
  • TDD time division duplexing
  • CA carrier aggregation
  • the base station may schedule multiple PDCCH resources located in different or the same frequency domain location in different time domain locations, and send DCI information to the UE. As shown in FIG. 5, the base station schedules three PDCCH resources, where PDCCH resource 1 corresponds to slot 1 and frequency 1, PDCCH resource 2 corresponds to slot 2 and frequency 2, and PDCCH resource 3 corresponds to slot 3 and frequency 3.
  • the base station may schedule multiple PDCCH resources located on different carriers in the same time domain location, and send DCI information to the UE.
  • the eNB reserves three PDCCH resources, where PDCCH resource 1 is located on carrier 1, and PDCCH resource of carrier 1 is CCE0-CCE1, PDCCH resource 2 is located on carrier 2, and carrier 2 is occupied.
  • the PDCCH resource is CCE4-CCE6, PDCCH resource 3 corresponds to carrier 3, and the PDCCH resource of carrier 3 occupied is CCE9.
  • the numbers of the CCEs on the respective carriers may be independent of each other, that is, the carrier 1 corresponds to 9 CCEs, the CCE number of the PDCCH resource 1 is the sequence number in the 9 CCEs of the carrier 1, and the CCE of the PDCCH resource 2 The sequence number is the sequence number in multiple CCEs of carrier 2.
  • the base station sends the downlink data to the UE in the multiple PDCCH resources, and sends the downlink data to the UE on the PDSCH resource indicated by the DCI.
  • the location of the PDSCH resource is similar to that in FIG. 5 and FIG. 7 , and details are not described herein again.
  • the base station further needs to determine multiple PDCCH resources according to the resource that is used to send the UCI to the UE, and/or determine multiple PDSCH resources according to the resource that is used to send the UCI to the UE. For example, in a plurality of PDCCH resources, there are at least two first PDCCH resources, and the at least two first PDCCH resources are used to implicitly indicate, to the UE, uplink resources for transmitting UCI, by using the at least two first PDCCHs.
  • the frequency domain resource of each PDCCH is determined to be the same as the PUCCH resource used by the UE to send the UCI, and the base station needs to determine the at least two first PDCCH resources according to the indicated UE transmitting the UCI resources, except the at least two first PDCCHs.
  • the PDCCH resource outside the resource can be determined directly by the base station according to the actual usage of the downlink resource.
  • the base station or the UE may determine, by using any one of the at least two first PDCCH resources, the uplink resource that the UE sends the UCI, or may determine, according to the at least two first PDCCH resources, the uplink resource that the UE sends the UCI.
  • the names of the at least two first PDCCH resources are only used to facilitate distinguishing from other PDCCHs in the N PDCCHs that are not used to determine the PUCCH resources, and the at least two first PDCCH resources may also be used. The name is not limited here.
  • the at least two first PDCCH resources include: a first PDCCH resource of the N PDCCH resources and a last PDCCH of the N PDCCH resources a resource or a first PDCCH resource of the N PDCCH resources and a second PDCCH resource of the N PDCCH resources; or the last two PDCCH resources of the N PDCCH resources; or the N PDCCH resources Any three PDCCH resources; or any one of the N PDCCH resources, i is an integer greater than or equal to 2 and less than or equal to N.
  • the downlink resource is a PDSCH resource
  • the at least two first PDCCH resources are similar to the at least two first PDCCH resources, and details are not described herein again.
  • the at least two first PDCCH resources or the at least two first PDSCH resources may be agreed by the base station in advance with the UE, or specified by a standard, or static/semi-statically configured, or may be a base station. After the at least two first PDCCH resources or the at least two first PDSCH resources are determined, the indication information is indicated to the UE, which is not limited in the embodiment of the present application.
  • the uplink resource may be a PUCCH resource.
  • the uplink resource may also be other resources, and is not limited herein.
  • the uplink resource is described by taking the PUCCH resource as an example.
  • the PUCCH resource may be configured by the base station in advance for the UE, as described in S301 in FIG. 3, and details are not described herein again.
  • the PDCCH resource when the downlink resource is a PDCCH resource, the PDCCH resource includes one or more of a frequency domain resource, a time domain resource, a code domain resource, and a port number of the PDCCH, that is, the base station can pass the PDCCH.
  • One or more of the frequency domain resource, the time domain resource, the code domain resource, and the port number, and the sequence number indicating the PUCCH resource used for transmitting the UCI is implicitly indicated to the UE.
  • the sequence number of the PUCCH resource used for sending the UCI may be implicitly indicated according to the frequency domain resource of the PDCCH and/or the starting position, the ending position, or the number of the time domain resource.
  • the manner in which the base station indicates the sequence number of the PUCCH resource for transmitting the UCI may be as shown in the formula (1) in S303 in FIG. 3, where the base station determines the PUCCH resource used for transmitting the UCI through any one of the resources of the PDCCH.
  • the definition of M in the formula (1) is unchanged, and is the number of PUCCH resources included in the PUCCH resource set indicated by the DCI transmitted in the PDCCH resource, and the definitions of the formulas C and L are based on the PDCCH resource used by the base station. The difference may be changed, and the parameter L may not be used in the formula (1).
  • the base station when the base station can implicitly indicate the sequence number of the PUCCH resource used for transmitting the UCI through the frequency domain resource of the PDCCH, C is the starting CCE sequence number of the frequency domain resource of the PDCCH, or the ending CCE sequence number, or the number of CCEs, etc., L
  • the aggregation level of the PDCCH, or the parameter L may not be used in the formula (1); when the base station can implicitly indicate the sequence number of the PUCCH resource used for transmitting the UCI through the time domain resource of the PDCCH, C is the time domain resource of the PDCCH.
  • the base station uses the multiple resources of the PDCCH to indicate the sequence number of the PUCCH resource for transmitting the UCI
  • r Mod((C/L)+Q, M).
  • other calculation formulas can also be used, and no limitation is imposed here.
  • the PDSCH resource When the downlink resource is a PDSCH resource, the PDSCH resource includes one or more of a frequency domain resource, a time domain resource, a code domain resource, and a port number of the PDSCH.
  • the method for explicitly indicating the indication is the same as the PDCCH resource, and details are not described herein again.
  • the resource used by the base station to indicate the sequence number of the PUCCH resource and the calculation formula of the sequence number of each resource to determine the PUCCH resource may be pre-determined by the base station and the UE, or specified by the standard, or static/half
  • the static configuration may also be indicated by the base station to the UE, and is not limited herein.
  • the manner in which the base station determines the at least two PDCCH resources is as follows:
  • the base station may adopt any one of the following:
  • the base station determines one PUCCH resource from the plurality of PUCCH resources, and transmits the PUCCH resource of the UCI to the UE. For example, determining that the first PUCCH resource in the PUCCH resource set 01 is a PUCCH resource for the UE to transmit UCI. If the base station indicates the sequence number of the PUCCH resource in the PUCCH resource set 01 by using the frequency domain resource of the PDCCH, the base station may determine, by using the method in S303, the frequency domain resource start of each PDCCH in the at least two PDCCHs.
  • the CCE sequence number and the aggregation level of each PDCCH are such that the PUCCH resources used by the UE for determining the frequency domain resource of each of the at least two PDCCHs for transmitting the UCI are the same.
  • the at least two PDCCH resources are the first PDCCH resource and the last PDCCH resource of the N PDCCH resources, so that the frequency domain resources of the first PDCCH and the last PDCCH are implicitly indicated in the PUCCH resource set 01.
  • the base station does not need to determine, in advance, the PUCCH resource of the UCI sent by the UE from the multiple PUCCH resources, but determines the resources of the other PDCCHs of the at least two PDCCHs by using the first PDCCH resource of the at least two PDCCHs, so that the The frequency domain resource determined by each of the at least two PDCCHs is the same as the PUCCH resource used by the UE to transmit the UCI.
  • the at least two PDCCH resources are the first PDCCH resource and the last PDCCH resource of the N PDCCH resources, and the base station implicitly indicates the sequence number of the PUCCH resource in the PUCCH resource set 01 by using the frequency domain resource of the PDCCH.
  • the sequence number of the PUCCH resource whose implicit indication is 1. The base station determines that the sequence number of the PUCCH resource indicated by the frequency domain resource of the last PDCCH is 1, and the base station can determine that the frequency domain resource of the last PDCCH is CCE4-CCE7 (L). 4).
  • the manner in which the base station determines the at least two PDSCH resources is the same as the manner in which the at least two PDCCH resources are determined, and details are not described herein again.
  • the corresponding information is sent to the UE on the corresponding resource.
  • the manner in which the base station sends the corresponding information to the UE may be one of the following two situations.
  • the base station may send the DCI to the UE through the N PDCCH resources, and the base station may send the DCI on the PDCCH resource after determining one PDCCH resource, and then determine the next PDCCH resource; or the base station may determine N first.
  • DCI is then sent on the N PDCCH resources in sequence, which is not limited herein.
  • the downlink resource is a PDSCH resource
  • the principle of the processing mode of the base station is the same as that when the downlink resource is the PDCCH resource. Therefore, in the embodiment of the present application, the case where the downlink resource is the PDSCH resource is not separately described.
  • S602 The UE receives K downlink information sent by the base station.
  • line resources are used as PDCCH resources and downlink information is DCI as an example.
  • the UE performs a search in a Common Search Space (CSS) and a Specific Search Space (SSS) by means of blind detection, thereby acquiring DCI sent by the base station.
  • SCS Common Search Space
  • SSS Specific Search Space
  • the base station sends N DCIs to the UE, the UE may not receive all of them. For example, the UE only receives N-1 DCIs. Therefore, K is less than or equal to N, and K is greater than or equal to zero.
  • the UE After receiving the DCI sent by the base station, the UE determines a PUCCH resource for transmitting the UCI by using one of the at least two PDCCH resources that carry the DCI.
  • the manner in which the UE determines the PUCCH resource for transmitting the UCI is different according to the fact that the at least two PDCCH resources are the specific ones of the N PDCCH resources, and is mainly divided into the following four manners.
  • the at least two first downlink resources are the first PDCCH resource of the N PDCCH resources and the last PDCCH resource of the N PDCCH resources; or the at least two first downlink resources are The first PDCCH resource, the second last PDCCH resource, and the last PDCCH resource of the N PDCCH resources:
  • the UE determines the PUCCH resource used for sending the UCI according to the downlink resource occupied by the first downlink information.
  • the UE determines whether to receive the first DCI sent by the base station according to the downlink downlink assignment index (DAI) and/or the total DAI carried in the DCI.
  • DAI downlink downlink assignment index
  • the following is an example of counter DAI. Specifically, when the UE receives the first DCI, the value of the counter DAI in the DCI is obtained. When the value is 1, the DCI is the first DCI sent by the base station, and then the UE is The value of the PUCCH resource indicator included in the received first DCI determines a PUCCH resource set in which the PUCCH resource of the UCI is transmitted, and then determines, according to the received PDCCH resource occupied by the first DCI, the UCI for transmitting the UCI.
  • the PDCCH resource includes any one or more of a frequency domain resource, a time domain resource, a code domain resource, and a port number of the PDCCH, and the base station performs an implicit indication according to the pre-agreed resource or the base station indicates the use to the UE. For example, after the UE obtains the corresponding PDCCH resource, the UE determines the sequence number of the PUCCH resource according to the method described in S601, and details are not described herein again.
  • the UE determines the PUCCH resource used for sending the UCI according to the downlink resource occupied by the last received downlink information in the K downlink information.
  • the UE When the UE receives the first DCI, the value of the counter DAI in the DCI is obtained. When the value is not 1, for example, 2, the first DCI received by the UE is the second one sent by the base station. DCI. Then, the UE determines the PUCCH resource for transmitting the UCI according to any one of the received multiple DCIs and the PDCCH resources occupied by the last DCI.
  • the specific determination method is the same as that in S603, and details are not described herein again.
  • the UE performs S603 or S604 according to whether the first DCI sent by the base station is received, that is, S603 and S604 select one for execution.
  • S604 is an optional step as an example.
  • the base station determines a plurality of PDCCH resources according to the PUCCH resource used by the UE to send the UCI, the PUCCH resource implicitly indicated in the second to last PDCCH is controlled, and the first PDCCH resource and the last PDCCH resource are implicitly indicated.
  • the method in the embodiment of the present application further includes:
  • S605 The UE determines the last downlink information sent by the lost base station.
  • the first PDCCH resource of the N PDCCH resources and the last PDCCH resource of the N PDCCH resources are included in the at least two first downlink resources, and the UE determines, by using S603, that the first DCI sent by the base station is received, If the UE determines that the PUCCH resource used for transmitting the UCI according to the first DCI is different from the PUCCH resource used by the UE to send the UCI according to the received last DCI, the UE determines the last DCI sent by the lost base station, because the UE The last DCI is lost, and the last downlink data sent by the base station is naturally not received from the last PDSCH resource indicated by the base station. Therefore, when the UE transmits the UCI, the NACK response to the last downlink data that is lost may be increased. In this way, when receiving the UCI, the base station can determine that the UE has lost the last downlink data without blind decoding.
  • S605 is optional, that is, it is not necessary to perform, that is, the UE may not be sure whether to lose the last DCI, that is, if the UE loses the last DCI but does not use the method of S605, the UE is transmitting.
  • UCI it is impossible to send a NACK response to the last downlink data that is lost, that is, the UWI lacks a response bit for the last downlink data, and the number of bits of the UCI is smaller than the number of bits of the UCI that the base station expects to receive. Therefore, the base station needs to perform a blind decoding when receiving the UCI to determine that the UE has lost the last downlink data.
  • S606 The UE sends the UCI on the PUCCH resource.
  • the UE After receiving the K DCIs, the UE determines K PDSCH resources according to the K DCIs, and then receives the downlink data sent by the base station on the K PDSCH resources, and generates corresponding to each PDSCH resource according to the received downlink data. ACK/NACK response.
  • the UE may use K bits in the UCI to carry ACK/NACK responses with downlink data in the K PDSCH resources, where each bit characterizes an ACK/NACK response to the corresponding downlink data, eg, 1st
  • the bit is an ACK/NACK response to the downlink data in the received PDSCH resource indicated by the first DCI
  • the second bit is an ACK/NACK of the downlink data in the PDSCH resource indicated by the received second DCI. Answer, and so on.
  • this is only one example of the UE feeding back an ACK/NACK response. In this application, there is no restriction on how the UE feeds back the ACK/NACK response.
  • the at least two first downlink resources are the first PDCCH resource of the N PDCCH resources and the second PDCCH resource of the N PDCCH resources:
  • the UE determines the PUCCH resource used for sending the uplink control information UCI according to the downlink resource occupied by the first downlink information.
  • S608 If the K downlink information does not include the first downlink information sent by the base station, the UE determines, according to the downlink resources that are received by the second downlink information sent by the base station, to send the UCI. PUCCH resources. In Figure 8, S608 is optional.
  • the UE When the UE receives the value of the counter DAI in the first DCI, if the value is not 1, the UE determines that the first DCI sent by the base station is not received, the UE determines whether the value is 2, if the value is If the value is 2, the DCI is the second DCI sent by the base station, and the UE determines the PUCCH resource used for sending the UCI according to the DCI and the PDCCH resource occupied by the DCI.
  • the specific determination method is the same as that in S603. No longer.
  • the UE performs S607 or S608 according to whether the first DCI sent by the base station is received, that is, S607 and S608 select one for execution.
  • S609 The UE sends the UCI on the PUCCH resource.
  • S609 is the same as S606, and will not be described again here. It should be noted that the UE may determine, according to the counter DAI in the DCI, that the currently received DCI is the first DCI sent by the base station, and if the counter DAI of the first DCI received by the UE is 3, the UE determines that the UE does not receive the first DCI.
  • the first DCI and the second DCI sent by the base station that is, the UE does not receive the DCI sent by the base station by using any one of the at least two PDCCHs, the UE may choose not to send the UCI.
  • the UE In a third determining manner, when at least two first downlink resources are the last two PDCCH resources of the N PDCCH resources, the UE directly according to any one of the received DC DCIs and the last received one.
  • the occupied PDCCH resources of the DCI determine an uplink resource for transmitting UCI.
  • the base station determines a plurality of PDCCH resources according to the PUCCH resource used by the UE to transmit the UCI, the PUCCH resource implicitly indicated in the third PDCCH is controlled, and the last two PDCCH resources are implicitly used. If the indicated PUCCH resources are different, the method in the embodiment of the present application further includes:
  • the UE determines the last DCI sent by the lost base station. Therefore, when the UE is transmitting the UCI, the NACK response to the last downlink data that is lost can be increased, so that the base station can determine that the UE has lost the last downlink data without blind decoding when receiving the UCI.
  • the at least two first downlink resources are the first PDCCH resource, the second PDCCH resource, and the last PDCCH resource of the N PDCCH resources:
  • the UE determines the PUCCH resource used for sending the uplink control information UCI according to the downlink resource occupied by the first downlink information.
  • the UE determines, according to the downlink resources that are received by the second downlink information sent by the base station, to send the UCI.
  • PUCCH resources PUCCH resources
  • S610-S611 is the same as S607-S608, and details are not described herein again.
  • S612 If the UE determines that the first DCI and the second DCI sent by the base station are not received, determining, according to the downlink resource occupied by the last DCI received, the PUCCH resource used for sending the UCI.
  • the UE determines that the first DCI and the second DCI sent by the base station are not received by using the value of the counter DAI in the DCI, the UE is configured according to any DCI of the received multiple DCIs and the PDCCH resources occupied by the last DCI.
  • the method for determining the PUCCH resource for sending the UCI is the same as that in S603, and details are not described herein again.
  • the UE may receive the The PDCCH resources occupied by any one of the received DCIs determine the PUCCH resources used to transmit the UCI.
  • the network device first uses at least two downlink resources to indicate an uplink resource that is used by the terminal device to send the UCI, so that when the terminal device receives any downlink information on the at least two downlink resources,
  • the uplink resource used for transmitting the UCI is determined according to the received downlink resource, and the probability that the at least two downlink resources are simultaneously lost is low. Therefore, the terminal device can determine the uplink for sending the UCI.
  • the correct rate of resources does not conflict with the uplink resources of other terminal devices transmitting UCI, and the transmission reliability of the ACK/NACK response can be further improved.
  • the method for determining the uplink resource provided by the embodiment of the present application is introduced from the perspective of the interaction between the network element and the network element.
  • each network element such as a UE, a base station, etc.
  • each network element includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • FIG. 10 shows a possible structural diagram of the network device 1000.
  • the network device 1000 can implement the functions of the base station involved in the above embodiments.
  • the network device 1000 includes a transmitting module 1001 and a receiving module 1002.
  • the sending module 1001 is configured to send downlink information to the terminal device on the N downlink resources, where the N downlink resources include at least two first downlink resources, and the at least two first downlink resources are used to determine
  • the terminal device is configured to send an uplink resource of the uplink control information UCI, or one of the at least two first downlink resources is used to determine the uplink resource, where the downlink resource is a downlink control channel resource and/or Downlink shared channel resources;
  • the receiving module 1002 is configured to receive, on the uplink resource, a UCI sent by the terminal device.
  • each of the at least two first downlink resources determines that the uplink resources used by the terminal device to send the UCI are the same.
  • the at least two first downlink resources include:
  • the last two downlink resources of the N downlink resources are the last two downlink resources of the N downlink resources.
  • the resources of the downlink control channel include:
  • One or more of the port numbers of the downlink control channel are One or more of the port numbers of the downlink control channel
  • the resources of the downlink shared channel include:
  • One or more of the port numbers of the downlink shared channel are One or more of the port numbers of the downlink shared channel.
  • FIG. 11 shows a possible structural diagram of the terminal device 1100.
  • the terminal device 1100 can implement the functions of the UE involved in FIG. 6 described above.
  • the terminal device 1100 includes a receiving module 1101 and a determining module 1102.
  • the receiving module 1101 is configured to receive K downlink information sent by the network device.
  • the determining module 1102 is configured to: if the K downlink information includes the first downlink information sent by the network device, determine, according to the downlink resource occupied by the first downlink information, the uplink control information UCI An uplink resource, if the first downlink information sent by the network device is not included in the K downlink information, determining, according to the downlink resource occupied by the last downlink information received in the K downlink information, for sending the UCI Uplink resources;
  • the downlink resource is a downlink control channel resource and/or a downlink shared channel resource.
  • the downlink control channel resources include:
  • One or more of the port numbers of the downlink control channel are One or more of the port numbers of the downlink control channel
  • the downlink shared channel resources include:
  • One or more of the port numbers of the downlink shared channel are One or more of the port numbers of the downlink shared channel.
  • the determination module 1102 is also used to:
  • the first uplink resource is an uplink resource that is used by the determining module to send the UCI according to the downlink resource that is received by the second-to-last downlink information
  • the second uplink resource is the determining.
  • the determination module 1102 is also used to:
  • the third uplink resource is different from the fourth uplink resource, determining to lose the last downlink information sent by the network device;
  • the third uplink resource is an uplink resource used by the determining module to send the UCI according to the downlink resource occupied by the received first downlink information, where the fourth uplink control channel resource is And determining, by the module, the uplink resource used to send the UCI according to the downlink resource occupied by the received last downlink information.
  • FIG. 12 shows a possible structural diagram of the terminal device 1200.
  • the terminal device 1200 can implement the functions of the UE involved in FIG. 8 described above.
  • the terminal device 1200 includes a receiving module 1201 and a determining module 1202.
  • the receiving module 1201 is configured to receive K downlink information sent by the network device.
  • the determining module 1202 is configured to: if the K downlink information includes the first downlink information sent by the network device, determine, according to the downlink resource occupied by the first downlink information, to send uplink control information UCI If the first downlink information sent by the network device is not included in the K downlink information, the second downlink information sent by the network device received in the K downlink information is used.
  • the occupied downlink resource determines an uplink resource used to send the UCI;
  • the downlink resource is a downlink control channel resource and/or a downlink shared channel resource.
  • the downlink control channel resources include:
  • One or more of the port numbers of the downlink control channel are One or more of the port numbers of the downlink control channel
  • the downlink shared channel resources include:
  • One or more of the port numbers of the downlink shared channel are One or more of the port numbers of the downlink shared channel.
  • the determination module 1202 is also used to:
  • the first uplink resource is an uplink resource that is used by the determining module to send the UCI according to the downlink resource that is received by the second-to-last downlink information
  • the second uplink resource is the determining.
  • the determination module 1202 is also used to:
  • the third uplink resource is different from the fourth uplink resource, determining to lose the last downlink information sent by the network device;
  • the third uplink resource is an uplink resource used by the determining module to send the UCI according to the downlink resource occupied by the received first downlink information, where the fourth uplink control channel resource is And determining, by the module, the uplink resource used to send the UCI according to the downlink resource occupied by the received last downlink information.
  • the network device 1000, the terminal device 1100, and the terminal device 1200 are presented in the form of dividing each function into individual functional modules, or may be presented in an integrated manner to form the functional modules.
  • a “module” herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that executes one or more software or firmware programs, integrated logic circuits, and/or other devices that provide the above functionality. .
  • ASIC application-specific integrated circuit
  • the network device 1000 can also be implemented by the structure shown in FIG. 13, and the terminal device 1100 is implemented by the structure shown in FIG. This is achieved by the structure shown in FIG.
  • the structure shown in Figs. 13, 14, and 15 will be described below.
  • the network device 1300 can include a transmitter 1301, a processor 1302, and a receiver 1303.
  • the physical device corresponding to the sending module 1001 in FIG. 10 may be the transmitter 1301
  • the physical device corresponding to the receiving module 1002 may be the receiver 1303.
  • the processor 1302 may be a central processing unit (CPU) or an application specific integrated circuit (ASIC), and may be one or more integrated circuits for controlling program execution, may be a baseband chip, and the like.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the device may further include a memory, which may be connected to the processor 1302 through a bus structure or a star structure or other structure, or may also be respectively connected to the processor 1302 through a dedicated connection line, in which the bus structure is example.
  • the number of memories may be one or more, and the memory may be a read only memory (ROM), a random access memory (RAM), or a disk memory, and the like.
  • the transmitter 1301 transmits downlink information to the terminal device on the N downlink resources under the control of the processor 1302, where the N downlink resources include at least two target downlink resources, and the at least two target downlink resources are used. Determining, by the terminal device, an uplink resource for transmitting uplink control information UCI, or using one of the at least two target downlink resources for determining the uplink resource, where the downlink resource is a downlink control channel resource and/or a downlink Shared channel resources;
  • the receiver 1303 receives the UCI transmitted by the terminal device on the uplink resource under the control of the processor 1302.
  • each of the at least two target downlink resources determines that the uplink resources used by the terminal device to send the UCI are the same.
  • the at least two target downlink resources include:
  • the last two downlink resources of the N downlink resources are the last two downlink resources of the N downlink resources.
  • the resources of the downlink control channel include:
  • One or more of the port numbers of the downlink control channel are One or more of the port numbers of the downlink control channel
  • the resources of the downlink shared channel include:
  • One or more of the port numbers of the downlink shared channel are One or more of the port numbers of the downlink shared channel.
  • the terminal device 1400 may include a receiver 1401 and a processor 1402.
  • the physical device corresponding to the receiving module 1101 in FIG. 11 may be the receiver 1401
  • the physical device corresponding to the determining module 1102 may be the processor 1402.
  • the processor 1402 may be a central processing unit (CPU) or an application specific integrated circuit (ASIC), and may be one or more integrated circuits for controlling program execution, may be a baseband chip, and the like.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the device may further include a memory, which may be connected to the processor 1402 through a bus structure or a star structure or other structure, or may also be respectively connected to the processor 1402 through a dedicated connection line, in which the bus structure is example.
  • the number of memories may be one or more, and the memory may be a read only memory (ROM), a random access memory (RAM), or a disk memory, and the like.
  • the receiver 1401 receives K downlink information sent by the network device under the control of the processor 1402.
  • the processor 1402 determines, according to the downlink resource occupied by the first downlink information, an uplink resource used for sending the uplink control information UCI;
  • the processor 1402 determines, according to the downlink resource occupied by the last downlink information received in the K downlink information, to send the UCI. Uplink resources;
  • the downlink resource is a downlink control channel resource and/or a downlink shared channel resource.
  • the downlink control channel resources include:
  • One or more of the port numbers of the downlink control channel are One or more of the port numbers of the downlink control channel
  • the downlink shared channel resources include:
  • One or more of the port numbers of the downlink shared channel are One or more of the port numbers of the downlink shared channel.
  • the processor 1402 is also used to:
  • the processor determines to lose the last downlink information sent by the network device;
  • the first uplink resource is an uplink resource used by the processor to send the UCI according to the downlink resource occupied by the second-to-last downlink information
  • the second uplink resource is the processing.
  • the processor 1402 is also used to:
  • the processor determines to lose the last downlink information sent by the network device;
  • the third uplink resource is an uplink resource used by the processor to send the UCI according to the downlink resource occupied by the received first downlink information
  • the fourth uplink control channel resource is The uplink resource used by the processor to send the UCI according to the downlink resource occupied by the last downlink information received.
  • the terminal device 1500 may include a receiver 1501 and a processor 1502.
  • the physical device corresponding to the receiving module 1201 in FIG. 12 may be the receiver 1501
  • the physical device corresponding to the determining module 1202 may be the processor 1502.
  • the processor 1502 may be a central processing unit (CPU) or an application specific integrated circuit (ASIC), and may be one or more integrated circuits for controlling program execution, may be a baseband chip, and the like.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the device may further include a memory, which may be connected to the processor 1502 through a bus structure or a star structure or other structure, or may also be respectively connected to the processor 1502 through a dedicated connection line, in which the bus structure is example.
  • the number of memories may be one or more, and the memory may be a read only memory (ROM), a random access memory (RAM), or a disk memory, and the like.
  • the receiver 1501 receives K downlink information sent by the network device under the control of the processor 1502.
  • the processor 1502 determines, according to the downlink resource occupied by the first downlink information, an uplink resource used for sending the uplink control information UCI. ;
  • the processor 1502 is occupied by the second downlink information sent by the network device received by the K downlink information.
  • the downlink resource determines an uplink resource used to send the UCI
  • the downlink resource is a downlink control channel resource and/or a downlink shared channel resource.
  • the downlink control channel resources include:
  • One or more of the port numbers of the downlink control channel are One or more of the port numbers of the downlink control channel
  • the downlink shared channel resources include:
  • One or more of the port numbers of the downlink shared channel are One or more of the port numbers of the downlink shared channel.
  • the processor 1502 is also used to:
  • the processor determines to lose the last downlink information sent by the network device;
  • the first uplink resource is an uplink resource used by the processor to send the UCI according to the downlink resource occupied by the second-to-last downlink information
  • the second uplink resource is the processing.
  • the processor 1502 is also used to:
  • the processor determines to lose the last downlink information sent by the network device;
  • the third uplink resource is an uplink resource used by the processor to send the UCI according to the downlink resource occupied by the received first downlink information
  • the fourth uplink control channel resource is The uplink resource used by the processor to send the UCI according to the downlink resource occupied by the last downlink information received.
  • the network device and the terminal device provided by the present application may be a chip system, and the chip system may include at least one chip, and may also include other discrete devices.
  • the chip system may be placed in a network device or a terminal device, and the network device or the terminal device is supported to complete the communication method and the uplink resource determining method provided in the embodiments of the present application.
  • the embodiment of the present application provides a computer storage medium, where the computer storage medium stores an instruction, and when the instruction is run on a computer, causes the computer to execute the foregoing communication method and an uplink resource determining method.
  • the embodiment of the present application provides a computer program product, where the computer program product includes instructions, when the instruction is run on a computer, causing the computer to execute the foregoing communication method and an uplink resource determining method.
  • the embodiment of the present application is a communication system, which includes the network device and the terminal device described in FIG. 6 or FIG. 7.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another readable storage medium, for example, the computer instructions can be passed from a website site, computer, server or data center Wired (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center.
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)) or the like.
  • a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
  • an optical medium eg, a DVD
  • a semiconductor medium eg, a solid state disk (SSD)

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  • Engineering & Computer Science (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de communication, et un procédé de détermination de ressource de liaison montante. L'invention vise à résoudre le problème lié, dans l'état de la technique, au fait que, lorsqu'un dispositif terminal détermine qu'une ressource PUCCH inadaptée provoque un conflit avec une ressource PUCCH utilisée par un autre dispositif terminal, le dispositif de réseau ne peut pas recevoir une réponse ACK/NACK retournée par le dispositif terminal. Le procédé de communication comprend les étapes suivantes : un dispositif de réseau envoie des informations de liaison descendante à un dispositif terminal sur N ressources de liaison descendante, les N ressources de liaison descendante comprenant au moins deux premières ressources de liaison descendante, les deux premières ressources de liaison descendante ou plus étant utilisées pour déterminer une ressource de liaison montante utilisée par le dispositif terminal pour envoyer des informations de commande de liaison montante (UCI), ou une ressource desdites deux premières ressources de liaison descendante ou plus étant utilisée pour déterminer la ressource de liaison montante, la ressource de liaison descendante étant une ressource de canal de commande de liaison descendante et/ou une ressource de canal partagé de liaison descendante ; le dispositif de réseau reçoit les UCI envoyées par le dispositif terminal sur La ressource de liaison montante, N étant un nombre entier positif supérieur à 1.
PCT/CN2018/101930 2018-01-12 2018-08-23 Procédé de communication, et procédé de détermination de ressource de liaison montante WO2019137011A1 (fr)

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CN113597002B (zh) * 2020-04-30 2023-10-20 维沃移动通信有限公司 下行接收触发方法、终端和网络侧设备

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