WO2021204300A1 - 控制信息传输方法 - Google Patents

控制信息传输方法 Download PDF

Info

Publication number
WO2021204300A1
WO2021204300A1 PCT/CN2021/086730 CN2021086730W WO2021204300A1 WO 2021204300 A1 WO2021204300 A1 WO 2021204300A1 CN 2021086730 W CN2021086730 W CN 2021086730W WO 2021204300 A1 WO2021204300 A1 WO 2021204300A1
Authority
WO
WIPO (PCT)
Prior art keywords
dci
search space
terminal device
bwp
bit stream
Prior art date
Application number
PCT/CN2021/086730
Other languages
English (en)
French (fr)
Inventor
郑娟
李超君
费永强
侯海龙
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP21783889.5A priority Critical patent/EP4117367A4/en
Publication of WO2021204300A1 publication Critical patent/WO2021204300A1/zh
Priority to US17/961,793 priority patent/US20230038936A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0072—Error control for data other than payload data, e.g. control data
    • 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • 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
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the field of communication technology, and in particular, to a method, device, and system for transmitting control information.
  • terminal devices in communication scenarios gradually show characteristics such as large numbers and multiple forms.
  • the industrial automation scenario there are a large number of monitoring equipment, machines, sensors, etc. in the factory; in the home and life scenarios, there are a large number of mobile phones, tablets, wearable devices, smart home appliances, or vehicle-mounted terminal devices, etc.
  • the embodiment of the present application provides a control information transmission method, which aims to reduce power consumption when a terminal device detects control information.
  • a method for transmitting control information including: detecting first downlink control information DCI in a first search space; wherein, the first DCI is used to indicate the active bandwidth part BWP of the terminal device, The activated BWP is used for the terminal device and the network device to transmit a physical data channel, the size of the first DCI and the size of the second DCI are aligned, and the second DCI is in the first common search space
  • the DCI that can be transmitted, and the second DCI is used for scheduling common messages.
  • the public message may be a system message, a paging message, or a random access response RAR.
  • the first search space is a first specific search space.
  • the method can also be described as: in the first common search space of the terminal device, detecting the second downlink control information DCI from the network device; wherein the second DCI is used for scheduling common messages, and the size of the second DCI is sum
  • the size of the first DCI is aligned, the first DCI is the DCI that can be transmitted in the first search space, the first DCI is used to indicate the active bandwidth part BWP of the terminal device, and the active BWP is used
  • the physical data channel is transmitted between the terminal device and the network device.
  • the public message may be a system message, a paging message, or a random access response RAR.
  • the first search space is a first specific search space.
  • the size of the DCI (first DCI) transmitted in the first search space of the terminal device is the same as the size of the DCI (second DCI) transmitted in the first common search space of the terminal device, and the size of the DCI detected by the terminal device can be reduced. Therefore, the number of times the terminal device detects the PDCCH can be reduced.
  • instructing the active BWP of the terminal device in the first DCI can realize the BWP switching function, so that the terminal device can make full use of the frequency domain diversity gain when transmitting information.
  • the terminal device when the method is used for a terminal device with a narrow bandwidth (such as a REDCAP terminal), through BWP switching, the terminal device can be allocated frequency domain resources in a larger bandwidth range, so that the frequency domain diversity gain can be used to provide data Reliability of transmission.
  • a narrow bandwidth such as a REDCAP terminal
  • the first specific search space is included in a plurality of specific search spaces of the terminal device, and one specific search space of the plurality of specific search spaces corresponds to N1 DCI formats, and Multiple specific search spaces correspond to a total of N2 DCI formats.
  • the DCIs of the N2 DCI formats are aligned in size when transmitted in the corresponding specific search space, where N1 is an integer greater than or equal to 1, and N2 is greater than or equal to N1. Integer.
  • the DCI sizes transmitted in the multiple specific search spaces of the terminal device are the same, and the types of DCI sizes detected by the terminal device can be reduced, thereby reducing the number of times the terminal device detects the PDCCH.
  • the size of the first DCI and the size of the second DCI are aligned, including:
  • the number of bits in the bit stream of the first DCI is equal to the number of bits in the bit stream of the second DCI
  • bit stream of the first DCI is an information bit stream of the first DCI
  • bit stream of the first DCI is a bit obtained by filling or truncating the information bit stream of the first DCI Stream
  • bit stream of the second DCI is the information bit stream of the second DCI
  • the bit stream of the first DCI is a bit stream obtained by performing a first operation on the information bit stream of the first DCI
  • the bit stream of the second DCI is a bit stream obtained by performing a first operation on the information bit stream of the second DCI.
  • the number of modulation symbols corresponding to the first DCI is equal to the number of modulation symbols corresponding to the second DCI.
  • the alignment of the first DCI size and the second DCI size can be achieved.
  • the first DCI is truncated or the first DCI includes stuffing bits.
  • one or more of the following information fields in the first DCI are truncated: a frequency domain resource allocation field, and a transmission parameter of the second transmission block.
  • the frequency domain resource allocation domain is truncated
  • one or more high-order bits of the frequency domain resource allocation domain are truncated.
  • the transmission parameter of the second transmission block is truncated
  • the first DCI includes the transmission parameter of the first transmission block, and the transmission parameter of the second transmission block is the same as the transmission parameter of the first transmission block.
  • the first DCI includes a frequency domain resource allocation field, which is used to indicate frequency domain resources allocated for the physical data channel in the activated BWP; wherein, the frequency domain resource allocation The size of the domain is determined according to the bandwidth of the initial BWP, which is used by the terminal device to receive the synchronization signal block SSB from the network device; or, the size of the frequency domain resource allocation domain is based on the control resource set CORESET If the bandwidth of 0 is determined, the CORESET 0 is used by the terminal device to receive from the network device the DCI scrambled by the system information radio network temporary identifier SI-RNTI.
  • SI-RNTI system information radio network temporary identifier
  • the size of the frequency domain resource allocation domain of the first DCI can be aligned with the size of the frequency domain resource allocation domain of the second DCI, so that the size of the first DCI and the size of the second DCI can be better aligned.
  • the first DCI can also be transmitted in the second common search space.
  • the method can also be described as that the first search space is the second common search space.
  • the network device can use the resources to transmit the first DCI to the terminal device, thereby improving resource utilization.
  • the RNTI of the first DCI is scrambled by the UE-specific RNTI.
  • the public DCI scrambled by the public RNTI can also be transmitted in the second public search space.
  • the terminal device When the terminal device receives the DCI in the second common search space, by descrambling the DCI, the RNTI used to scramble the DCI can be obtained, so that it can be obtained whether the DCI is a UE-specific DCI or a common DCI.
  • the second public search space and the first public search space can be the same or different.
  • the physical data channel includes a physical downlink shared channel PDSCH or a physical uplink shared channel PUSCH
  • the first DCI is also used to indicate whether the first DCI is used for scheduling the PDSCH or Scheduling the PUSCH.
  • the first DCI includes an identification field in a DCI format.
  • the identification field is the first value
  • the first DCI is used to schedule PUSCH
  • the identification field is the second Value
  • the first DCI is used to schedule PDSCH.
  • the first DCI when the first DCI is scrambled by the first RNTI, the first DCI is used for scheduling PUSCH, and when the first DCI is scrambled by the second RNTI, the first DCI is used for scheduling PDSCH.
  • this method it is possible to implicitly implement scheduling of multiple different channels with a DCI of one size, thereby saving the overhead of the first DCI.
  • the CRC bit of the first DCI is scrambled by using the specific wireless network temporary identification RNTI of the terminal device.
  • the terminal device specific RNTI is any one of the following RNTIs: C-RNTI, SPS-RNTI, MCS-C-RNTI, SP-CSI-RNTI, and CS-RNTI.
  • the CRC bit of the second DCI is scrambled by using a common RNTI.
  • the common RNTI is any one of the following RNTIs: SI-RNTI, P-RNTI, and RA-RNTI.
  • the PDSCH scheduled by the second DCI scrambled by SI-RNTI carries system messages
  • the PDSCH scheduled by the second DCI scrambled by P-RNTI carries paging messages
  • the second scrambled by RA-RNTII carries paging messages.
  • RAR is carried on PDSCH scheduled by DCI.
  • the method further includes: sending instruction information to the network device, which is used to indicate the type or capability information of the terminal device. For example, it indicates that the type of the terminal device is a REDCAP terminal.
  • the type of terminal device is a REDCAP terminal or a high-capability terminal.
  • the capability information of the terminal device includes one or more of the following information: the maximum bandwidth supported, the number of antennas supported, the maximum transmit power supported, whether carrier aggregation is supported, the number of carriers supported, and the corresponding protocol version , Duplex capability, data processing capability, and peak rate.
  • a method for transmitting control information including: detecting first downlink control information DCI in a first specific search space of a terminal device, where the first DCI is used to indicate the terminal device
  • the activated bandwidth part BWP of the terminal device and the network device is used to transmit the physical data channel; wherein, the first specific search space is included in multiple specific search spaces of the terminal device, and the multiple One specific search space in the three specific search spaces corresponds to N1 DCI formats, the multiple specific search spaces correspond to N2 DCI formats in total, and the DCIs of the N2 DCI formats are aligned in size when transmitted in the corresponding specific search space , Where N1 is an integer greater than or equal to 1, and N2 is an integer greater than or equal to N1.
  • the DCI sizes transmitted in the multiple specific search spaces of the terminal device are the same, that is, the terminal device is configured to detect a DCI size in the multiple specific search spaces, that is, a type of DCI size is configured for the multiple specific search spaces of the terminal device.
  • the DCI size can reduce the types of DCI sizes detected by the terminal device, thereby reducing the number of times the terminal device detects the PDCCH.
  • instructing the active BWP of the terminal device in the first DCI can realize the BWP switching function, so that the terminal device can make full use of the frequency domain diversity gain when transmitting information.
  • the terminal device when the method is used for a terminal device with a narrow bandwidth (such as a REDCAP terminal), through BWP switching, the terminal device can be allocated frequency domain resources in a larger bandwidth range, so that the frequency domain diversity gain can be used to provide data Reliability of transmission.
  • a narrow bandwidth such as a REDCAP terminal
  • the DCI of the N2 DCI formats is aligned in size when transmitted in the corresponding specific search space, including: the DCI of the N2 DCI formats is aligned to the first aspect when transmitted in the corresponding specific search space
  • the other size may be a predefined value, or may be a DCI size corresponding to one of the N2 DCI formats.
  • the DCI size is the smallest DCI size among the DCI sizes corresponding to the N2 DCI formats, or the largest DCI size among the DCI sizes corresponding to the N2 DCI formats.
  • the physical data channel includes a physical downlink shared channel PDSCH or a physical uplink shared channel PUSCH
  • the first DCI is also used to indicate whether the first DCI is used for scheduling the PDSCH or Scheduling the PUSCH.
  • the method for indicating whether the first DCI is used to schedule the PDSCH or the PUSCH may refer to the first aspect, which will not be repeated here.
  • the CRC bit of the first DCI is scrambled by using the specific wireless network temporary identification RNTI of the terminal device.
  • the specific RNTI of the terminal equipment please refer to the first aspect, which will not be repeated here.
  • the first DCI can also be transmitted in a common search space.
  • this method please refer to the first aspect, which will not be repeated here.
  • a method for transmitting control information including: sending first downlink control information DCI to a terminal device in a first search space;
  • the first DCI is used to indicate the active bandwidth part BWP of the terminal device
  • the active BWP is used to transmit the physical data channel between the terminal device and the network device
  • the size of the first DCI and the size of the second DCI are Aligned
  • the second DCI is a DCI that can be transmitted in the first common search space
  • the second DCI is used for scheduling system messages, paging messages, or random access response RARs.
  • the method can also be described as: in the first common search space of the terminal device, sending the second downlink control information DCI to the terminal device; wherein, the second DCI is used to schedule common messages, and the second DCI The size is aligned with the size of the first DCI.
  • the first DCI is the DCI that can be transmitted in the first search space.
  • the first DCI is used to indicate the BWP of the active bandwidth of the terminal device.
  • the BWP is used for the terminal equipment and network equipment to transmit physical data channels.
  • the public message may be a system message, a paging message, or a random access response RAR.
  • the first DCI, the second DCI, etc. reference may be made to the first aspect, which will not be repeated here.
  • a method for transmitting control information including: sending first downlink control information DCI to the terminal device in a first specific search space of the terminal device, wherein the first DCI is used to indicate all The activated bandwidth part BWP of the terminal device, the activated BWP is used for the terminal device and the network device to transmit a physical data channel; wherein, the first specific search space is included in multiple specific search spaces of the terminal device, One specific search space in the plurality of specific search spaces corresponds to N1 DCI formats, and the plurality of specific search spaces corresponds to N2 DCI formats in total, and when the DCI of the N2 DCI formats is transmitted in the corresponding specific search space
  • the sizes are aligned, where N1 is an integer greater than or equal to 1, and N2 is an integer greater than or equal to N1.
  • a device in a fifth aspect, may be a terminal device or another device capable of implementing the method described in the first aspect or the second aspect.
  • the other device can be installed in the terminal device, or can be matched and used with the terminal device.
  • the device may include modules that perform one-to-one correspondence of the methods/operations/steps/actions described in the first aspect or the second aspect.
  • the modules may be hardware circuits, software, or hardware. Circuit combined with software implementation.
  • the device may include a processing module and a communication module.
  • the communication module is used to detect the first downlink control information DCI in the first search space; wherein, the first DCI is used to indicate the active bandwidth part BWP of the terminal device, and the active BWP is used for When the terminal device and the network device transmit physical data channels, the size of the first DCI and the size of the second DCI are aligned, and the second DCI is the DCI that can be transmitted in the first common search space
  • the second DCI is used for scheduling system messages, paging messages, or random access response RARs.
  • the communication module is used for processing (demodulation and decoding, etc.) the received first DCI.
  • the first DCI, the second DCI, etc. reference may be made to the first aspect, which will not be repeated here.
  • the communication module is used to detect the first downlink control information DCI in the first specific search space of the terminal device, where the first DCI is used to indicate the active bandwidth part BWP of the terminal device ,
  • the activated BWP is used for the terminal device and the network device to transmit a physical data channel; wherein, the first specific search space is included in a plurality of specific search spaces of the terminal device, and the plurality of specific search spaces
  • a specific search space in the space corresponds to N1 DCI formats
  • the multiple specific search spaces correspond to N2 DCI formats in total
  • the DCIs of the N2 DCI formats are aligned in size when transmitted in the corresponding specific search space, where , N1 is an integer greater than or equal to 1, and N2 is an integer greater than or equal to N1.
  • the communication module is used for processing (demodulation and decoding, etc.) the received first DCI.
  • a device in a sixth aspect, may be a network device or another device capable of implementing the method described in the third aspect or the fourth aspect.
  • the other device can be installed in the network equipment, or can be matched and used with the network equipment.
  • the device may include a module that performs one-to-one correspondence of the method/operation/step/action described in the third aspect or the fourth aspect.
  • the module may be a hardware circuit, software, or hardware. Circuit combined with software implementation.
  • the device may include a processing module and a communication module.
  • the communication module is used to send the first downlink control information DCI to the terminal device in the first search space; wherein, the first DCI is used to indicate the active bandwidth part BWP of the terminal device, The activated BWP is used for the terminal device and the network device to transmit the physical data channel, the size of the first DCI and the size of the second DCI are aligned, and the second DCI can be used in the first common search space.
  • the transmitted DCI where the second DCI is used for scheduling system messages, paging messages, or random access response RARs.
  • the processing module is used to generate the first DCI.
  • the communication module is used to send the first downlink control information DCI to the terminal device in the first specific search space of the terminal device, where the first DCI is used to indicate the activation of the terminal device
  • the bandwidth part BWP, the activated BWP is used for the terminal device and the network device to transmit a physical data channel; wherein, the first specific search space is included in a plurality of specific search spaces of the terminal device, and the plurality of specific search spaces
  • a specific search space in the search space corresponds to N1 DCI formats, the multiple specific search spaces correspond to N2 DCI formats in total, and the DCIs of the N2 DCI formats are aligned in size when transmitted in the corresponding specific search space, Among them, N1 is an integer greater than or equal to 1, and N2 is an integer greater than or equal to N1.
  • the processing module is used to generate the first DCI.
  • an embodiment of the present application provides an apparatus, the apparatus includes a processor, and is configured to implement the method described in the first aspect or the second aspect.
  • the device may also include a memory for storing instructions.
  • the memory is coupled with the processor, and when the processor executes the instructions stored in the memory, the method described in the first aspect or the second aspect can be implemented.
  • the device may also include a communication interface, which is used for the device to communicate with other devices.
  • the communication interface may be a transceiver, circuit, bus, module, pin, or other type of communication interface.
  • the device can be a network device.
  • the device includes:
  • Memory used to store program instructions
  • the processor is configured to use the communication interface to detect the first downlink control information DCI in the first search space; wherein, the first DCI is used to indicate the active bandwidth part BWP of the terminal device, and the active BWP is used for all
  • the terminal device and the network device transmit physical data channels, the size of the first DCI and the size of the second DCI are aligned, and the second DCI is the DCI that can be transmitted in the first common search space, so
  • the second DCI is used for scheduling system messages, paging messages, or random access response RARs.
  • the processor is used for processing (demodulation and decoding, etc.) the received first DCI.
  • the first DCI, the second DCI, etc. reference may be made to the first aspect, which will not be repeated here.
  • the device includes:
  • Memory used to store program instructions
  • the processor is configured to use the communication interface to detect the first downlink control information DCI in the first specific search space of the terminal device, where the first DCI is used to indicate the active bandwidth part BWP of the terminal device, so The activated BWP is used for the terminal device and the network device to transmit a physical data channel; wherein, the first specific search space is included in a plurality of specific search spaces of the terminal device, and in the plurality of specific search spaces A specific search space in the corresponding to N1 DCI formats, the multiple specific search spaces correspond to N2 DCI formats in total, and the DCIs of the N2 DCI formats are aligned in size when transmitted in the corresponding specific search space, where N1 Is an integer greater than or equal to 1, and N2 is an integer greater than or equal to N1.
  • the processor is used for processing (demodulation and decoding, etc.) the received first DCI.
  • an embodiment of the present application provides a device, the device includes a processor, and is configured to implement the method described in the third or fourth aspect.
  • the device may also include a memory for storing instructions.
  • the memory is coupled with the processor, and when the processor executes the instructions stored in the memory, the method described in the third aspect or the fourth aspect can be implemented.
  • the device may also include a communication interface, which is used for the device to communicate with other devices.
  • the communication interface may be a transceiver, circuit, bus, module, pin, or other type of communication interface.
  • the device can be a terminal device.
  • the device includes:
  • Memory used to store program instructions
  • the processor is configured to use the communication interface to send the first downlink control information DCI to the terminal device in the first search space; wherein the first DCI is used to indicate the active bandwidth part BWP of the terminal device, and the active BWP For the terminal device and the network device to transmit a physical data channel, the size of the first DCI and the size of the second DCI are aligned, and the second DCI is the DCI that can be transmitted in the first common search space, The second DCI is used for scheduling system messages, paging messages, or random access response RARs.
  • the processor is used to generate the first DCI.
  • the device includes:
  • Memory used to store program instructions
  • the processor is configured to use the communication interface to send the first downlink control information DCI to the terminal device in the first specific search space of the terminal device, where the first DCI is used to indicate the active bandwidth portion of the terminal device BWP, the activated BWP is used for the terminal device and the network device to transmit a physical data channel; wherein, the first specific search space is included in a plurality of specific search spaces of the terminal device, and the plurality of specific search spaces A specific search space in corresponds to N1 types of DCI formats, and the plurality of specific search spaces corresponds to a total of N2 types of DCI formats, and the DCIs of the N2 types of DCI formats are aligned in size when transmitted in the corresponding specific search space, where, N1 is an integer greater than or equal to 1, and N2 is an integer greater than or equal to N1.
  • the processor is used to generate the first DCI.
  • an embodiment of the present application provides a communication system, including the device of the fifth aspect or the seventh aspect, and the device of the sixth aspect or the eighth aspect.
  • embodiments of the present application provide a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the method described in the first, second, third, or fourth aspect .
  • an embodiment of the present application provides a computer program product, including instructions, which when run on a computer, cause the computer to execute the method described in the first aspect, the second aspect, the third aspect, or the fourth aspect.
  • the embodiments of the present application provide a chip system, which includes a processor and may also include a memory, configured to implement the above-mentioned first, second, third or fourth aspects. method.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • FIG. 1 and FIG. 2 show example diagrams of the method flow provided by the embodiments of this application;
  • Figures 3 and 4 show example diagrams of the device structure provided by an embodiment of the application.
  • LTE long term evolution
  • 5G fifth generation
  • WiFi wireless-fidelity
  • future communication system or a system integrating multiple communication systems, etc.
  • 5G can also be called new radio (NR).
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable low-latency communication
  • MTC machine type communication
  • mMTC massive machine type communications
  • V2X Vehicle to everything
  • V2V vehicle to vehicle
  • IoT internet of things
  • mMTC may include one or more of the following communications: communication in industrial wireless sensor network (IWSN), communication in video surveillance (video surveillance) scenarios, and communication with wearable devices .
  • Communication between communication devices may include: communication between a network device and a terminal device, communication between a network device and a network device, and/or communication between a terminal device and a terminal device.
  • the term “communication” can also be described as “transmission”, “information transmission”, or “signal transmission” and so on. Transmission can include sending and/or receiving. Taking the communication between the network device and the terminal device as an example, the technical solution of the embodiment of the present application is described. Those skilled in the art can also use the technical solution for communication between other scheduling entities and subordinate entities, such as between a macro base station and a micro base station.
  • Air interface resources include one or more of the following resources: time domain resources, frequency domain resources, code resources, and space resources.
  • the multiple types may be two, three, four or more types, which are not limited in the embodiments of the present application.
  • the communication between the network device and the terminal device includes: the network device sends a downlink signal or information to the terminal device, and/or the terminal device sends an uplink signal or information to the network device.
  • "/" can indicate that the associated objects are in an "or” relationship.
  • A/B can indicate A or B; and "and/or” can be used to describe that there are three types of associated objects.
  • the relationship, for example, A and/or B can mean that: A alone exists, A and B exist at the same time, and B exists alone. Among them, A and B can be singular or plural.
  • words such as “first” and “second” may be used to distinguish technical features with the same or similar functions. The words “first” and “second” do not limit the quantity and order of execution, and the words “first” and “second” do not limit the difference.
  • words such as “exemplary” or “for example” are used to indicate examples, illustrations, or illustrations, and embodiments or design solutions described as “exemplary” or “for example” should not be interpreted as It is more preferable or advantageous than other embodiments or design solutions.
  • the use of words such as “exemplary” or “for example” is intended to present related concepts in a specific manner to facilitate understanding.
  • the terminal device involved in the embodiment of the present application may also be referred to as a terminal, and may be a device with a wireless transceiver function.
  • the terminal can be deployed on land, including indoor, outdoor, handheld, and/or vehicle-mounted; it can also be deployed on the water (such as a ship, etc.); it can also be deployed in the air (such as aeroplane, balloon, satellite, etc.).
  • the terminal device may be a user equipment (UE), and the UE includes a handheld device with a wireless communication function, a vehicle-mounted device, a wearable device, or a computing device.
  • the UE may be a mobile phone, a tablet computer, or a computer with a wireless transceiver function.
  • Terminal equipment can also be virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, wireless terminals in industrial control, wireless terminals in unmanned driving, wireless terminals in telemedicine, and smart Wireless terminals in power grids, wireless terminals in smart cities, and/or wireless terminals in smart homes, etc.
  • VR virtual reality
  • AR augmented reality
  • Wireless terminals in power grids wireless terminals in smart cities, and/or wireless terminals in smart homes, etc.
  • the network device involved in the embodiment of the present application includes a base station (BS), which may be a device that is deployed in a wireless access network and can communicate with terminal devices wirelessly.
  • the base station may have many forms, such as a macro base station, a micro base station, a relay station, or an access point.
  • the base station involved in the embodiment of the present application may be a base station in a 5G system or a base station in an LTE system. Among them, the base station in the 5G system may also be referred to as a transmission reception point (TRP) or a next-generation Node B (gNB or gNodeB).
  • TRP transmission reception point
  • gNB next-generation Node B
  • a light terminal device can be introduced compared to a traditional terminal device, such as an eMBB terminal.
  • the light terminal device may also be referred to as a reduced capability (REDCAP) terminal.
  • the eMBB terminal is a terminal capable of transmitting eMBB services.
  • the traditional terminal device can be a high-capacity terminal or a terminal with unlimited capabilities.
  • the traditional terminal equipment can be replaced with a high-capacity terminal that will be introduced in the future relative to the REDCAP terminal.
  • the feature comparison between the high-capability terminal and the REDCAP terminal satisfies at least one of the following items 1 to 9.
  • at least one item may be one or more items, for example, two items, three items or more items, which are not limited in the embodiments of the present application.
  • the first item the maximum bandwidth supported by the high-capability terminal is greater than the maximum bandwidth supported by the REDCAP terminal.
  • the maximum bandwidth supported by a high-capability terminal is 100MHz (megahertz) or 200MHz
  • the maximum bandwidth supported by a REDCAP terminal is 20MHz, 10MHz, or 5MHz.
  • the second item The number of antennas of high-capability terminals is more than that of REDCAP terminals.
  • the number of antennas can be the number of antennas set for the terminal or the maximum number of antennas used for transmission and/or reception.
  • a high-capacity terminal supports up to 4 antennas to receive and 2 antennas to transmit
  • a REDCAP terminal supports up to 2 antennas to receive and 1 antenna to transmit.
  • the antenna selective transmission capabilities are different.
  • high-capacity terminals and low-capacity terminals both support 2-antenna transmission, but high-capacity terminals support antenna-selective transmission, while low-capacity terminals do not support antenna-selective transmission.
  • high-capacity terminals can realize single-antenna port data transmission and switch between two transmitting antennas, and this data transmission can obtain spatial diversity gain; while low-capacity terminals can only use single antenna port data transmission at 2 Simultaneous transmission on two transmitting antennas is equivalent to the transmission performance of one transmitting antenna.
  • the maximum transmission power supported by the high-capability terminal is greater than the maximum transmission power supported by the REDCAP terminal.
  • the maximum transmit power supported by the high-capability terminal is 23 decibel-milliwatt (dBm) or 26 dBm
  • the maximum transmit power supported by the REDCAP terminal is a value from 4 dBm to 20 dBm.
  • Item 4 High-capacity terminals support carrier aggregation (CA), and REDCAP terminals do not support carrier aggregation.
  • CA carrier aggregation
  • REDCAP terminals do not support carrier aggregation.
  • the maximum number of carriers supported by the high-capability terminal is greater than the maximum number of carriers supported by the REDCAP terminal.
  • a high-capability terminal supports a maximum of 32 carriers or an aggregation of 5 carriers
  • a REDCAP terminal supports a maximum of 2 carriers.
  • High-capability terminals and REDCAP terminals are introduced in different protocol versions.
  • the high-capability terminal is the terminal introduced in the version (Release, R) 15 of the protocol
  • the REDCAP terminal is the terminal introduced in the R17 of the protocol.
  • Item 7 The duplex capabilities of high-capacity terminals and REDCAP terminals are different.
  • the duplex capability of high-capacity terminals is stronger.
  • high-capacity terminals support full-duplex frequency division duplex (FDD), that is, high-capability terminals support simultaneous reception and transmission when supporting FDD
  • REDCAP terminals support half-duplex FDD, that is, REDCAP terminals do not support FDD. Support simultaneous receiving and sending.
  • FDD frequency division duplex
  • REDCAP terminals support half-duplex FDD, that is, REDCAP terminals do not support FDD. Support simultaneous receiving and sending.
  • Item 8 The data processing capability of high-capacity terminals is stronger than that of REDCAP terminals.
  • a high-capacity terminal can process more data in the same time, or a high-capacity terminal can process the same data in a shorter time.
  • the time when the terminal receives the downlink data from the network device is T1
  • the time when the terminal sends the feedback of the downlink data to the network device is T2
  • the time between T2 and T1 of the high-capability terminal The time delay (time difference) is less than the time delay between T2 and T1 of the REDCAP terminal.
  • the feedback of downlink data may be ACK or NACK feedback.
  • the peak data transmission rate of the high-capacity terminal is greater than the peak data transmission rate of the REDCAP terminal.
  • the data transmission includes uplink data transmission (that is, the terminal sends data to the network device) and/or downlink data transmission (that is, the terminal receives data from the network device).
  • the high-capability terminal may also be referred to as a non-REDCAP terminal.
  • the REDCAP terminal can be applied to various scenarios such as the Internet of Things, mMTC, or V2X.
  • relatively high-capacity terminals require lower power consumption for REDCAP terminals.
  • the lower the power consumption of the REDCAP terminal the longer its battery life and the better the user experience.
  • the deployment environment of some REDCAP terminals (such as underground pipelines, suburbs, etc.) is relatively special, and it is not convenient to adjust the power supply system of the REDCAP terminals in this environment.
  • reducing the power consumption of REDCAP terminals can simplify the post-maintenance of such terminals and improve user experience. Therefore, how to reduce the power consumption of the REDCAP terminal is a problem worthy of study.
  • the terminal device may send instruction information to the network device to indicate the type or capability information of the terminal device.
  • it may indicate whether the type of the terminal is a REDCAP terminal or a high-capability terminal.
  • one or more of the following capability information of the terminal can be indicated: the maximum bandwidth supported, the number of antennas supported, the maximum transmission power supported, whether carrier aggregation is supported, the number of carriers supported, the corresponding protocol version, Duplex capability, data processing capability, and peak rate.
  • the network device can obtain the type of terminal device through the indication information, so that it can perform correct operations. So that network equipment and terminal equipment can exchange information normally.
  • the method provided in the embodiments of the present application can also be applied to other types of terminals, such as high-capacity terminals (such as eMBB terminals, or URLLC terminals supporting URLLC services) to reduce terminal power consumption and further improve user experience.
  • high-capacity terminals such as eMBB terminals, or URLLC terminals supporting URLLC services
  • the embodiment of the present application may take the REDCAP terminal as an example for description.
  • the device used to implement the function of the terminal device may be a terminal device; it may also be a device capable of supporting the terminal device to implement the function, such as a chip system.
  • the device can be installed in terminal equipment or matched with terminal equipment.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the device used to implement the functions of the terminal equipment is the terminal equipment, and the terminal equipment is the UE as an example to describe the technical solutions provided in the embodiments of the present application.
  • the device used to implement the function of the network device may be a network device; it may also be a device capable of supporting the network device to implement the function, such as a chip system.
  • the device can be installed in or matched with network equipment.
  • the device used to implement the functions of the network equipment is the network equipment, and the network equipment is a base station as an example to describe the technical solutions provided by the embodiments of the present application.
  • the UE can access the base station and communicate with the base station.
  • a base station can manage one or more (for example, 2, 3, or 6, etc.) cells, and the UE can access the base station in at least one of the one or more cells, and access the base station in the UE. Communicate with the base station in the accessed cell.
  • at least one may be one, two, three, or more, which is not limited in the embodiments of the present application.
  • the base station can send downlink control information (DCI) to the UE through the downlink control channel, which is used to schedule the physical data channel.
  • DCI downlink control information
  • the DCI may be used to schedule a physical downlink data channel, and the base station sends downlink data to the UE through the physical downlink data channel.
  • the DCI may be used to schedule a physical uplink data channel, and the UE sends uplink data to the base station through the physical uplink data channel.
  • the downlink control channel may be a physical downlink control channel (PDCCH), enhanced PDCCH (enhanced PDCCH), MTC PDCCH (MPDCCH), narrowband PDCCH (narrowband PDCCH, NPDCCH) or other types Downlink control channel, used to carry DCI.
  • PDCCH physical downlink control channel
  • enhanced PDCCH enhanced PDCCH
  • MTC PDCCH MTC PDCCH
  • MPDCCH MTC PDCCH
  • narrowband PDCCH narrowband PDCCH
  • NPDCCH narrowband PDCCH
  • the downstream control channel is the PDCCH as an example for description.
  • the UE When the physical data channel is scheduled by DCI, in order to perform data transmission, the UE needs to receive the DCI from the base station. When the UE receives the DCI, it may need to blindly detect the DCI multiple times. The greater the number of blind detections, the greater the power consumption of the UE. In order to reduce the power consumption of the UE, the number of times that the UE blindly detects DCI can be reduced. In order to reduce the number of times that the UE blindly detects DCI, the types of DCI sizes can be reduced. Based on this, the embodiments of the present application provide the following design solutions.
  • the first design solution the size of the public DCI transmitted in the first common search space and the size of the first DCI transmitted in the first search space are aligned.
  • the first DCI is used to indicate the active bandwidth part (bandwidth part, BWP) of the UE.
  • the base station sends the first DCI to the UE.
  • the first DCI is used to indicate the active BWP of the UE.
  • the size of the first DCI is the same as the size of the second DCI
  • the second DCI is a DCI that can be transmitted in the first common search space
  • the second DCI is used for scheduling common messages.
  • the first DCI may also be used to schedule a physical data channel, such as a physical downlink data channel or a physical uplink data channel.
  • the physical data channel scheduled by the first DCI is transmitted on the active BWP of the UE.
  • the first search space is the first specific search space of the UE.
  • the base station may send the second DCI to the UE in the first common search space, that is, the first search space may also be the first common search space.
  • the first search space is the first specific search space as an example for description.
  • the physical downlink data channel may be a physical downlink shared channel (PDSCH) or other downlink data channel, which is used to carry the downlink data sent by the base station to the UE.
  • This physical downlink data channel is not limited in the embodiment of the application.
  • the physical downlink data channel is the PDSCH as an example for description.
  • the DCI used to schedule the PDSCH is carried on the PDCCH and sent by the base station to the UE.
  • the DCI can indicate the transmission parameters of the PDSCH, and the transmission parameters are used for the UE to receive the PDSCH.
  • the transmission parameter may include one or more of the transmission parameters included in the following DCI format 1_0 and/or DCI format 1_1.
  • the physical uplink data channel may be a physical uplink shared channel (PUSCH) or other uplink data channel, which is used to carry the uplink data sent by the UE to the base station.
  • This physical uplink data channel is not limited in the embodiment of the application.
  • the physical uplink data channel is the PUSCH as an example for description.
  • the DCI used to schedule the PUSCH is carried on the PDCCH and sent by the base station to the UE.
  • the DCI can indicate the transmission parameters of the PUSCH, and the transmission parameters are used for the UE to send the PUSCH.
  • the transmission parameter may include one or more of the transmission parameters included in the following DCI format 0_0 and/or DCI format 0_1.
  • two types of DCI can be set.
  • the DCI for scheduling the PUSCH may be referred to as the first type of DCI
  • the DCI for scheduling the PDSCH may be referred to as the second type of DCI.
  • the format of the first type of DCI may include the DCI format 0_0, DCI format 0_1 or other formats of the first type of DCI described below
  • the format of the second type of DCI may include the DCI format 1_0, DCI format 1_1 or other formats described below.
  • the DCI format 0_0 may also be referred to as DCI 0_0
  • the DCI format 0_1 may also be referred to as DCI 0_1
  • the DCI format 1_0 may also be referred to as DCI 1_0
  • the DCI format 1_1 may also be referred to as DCI 1_1.
  • the format of the first type of DCI in the other format is different from DCI format 0_0 or DCI format 0_1
  • the first type of DCI in the other format may include DCI format 0_0 and/or DCI format 0_1.
  • the format of the second type of DCI in the other format is different from DCI format 1_0 or DCI format 1_1, and the second type of DCI in the other format may include DCI format 1_0 and/or DCI format 1_1
  • the transmission parameters For PDSCH or PUSCH, fallback DCI and non-fallback DCI can be designed.
  • the format of the fallback DCI of the PUSCH is DCI 0_0
  • the format of the non-fallback DCI of the PUSCH is DCI 0_1
  • the format of the fallback DCI of the PDSCH is DCI 1_0
  • the format of the non-fallback DCI of the PDSCH is DCI 1_1.
  • the types of information indicated by the non-fallback DCI are more than the types of information indicated by the fallback DCI, and the non-fallback DCI supports more functions. Exemplarily, as shown in Table 1, fallback DCI does not support bandwidth part (BWP) switching, and non-fallback DCI supports BWP switching.
  • BWP bandwidth part
  • one cell may correspond to one downlink carrier.
  • One cell can be equivalent to one downlink carrier.
  • one cell may correspond to one downlink carrier and one uplink carrier; or, one cell may correspond to one downlink carrier, one uplink carrier, and one supplementary uplink (SUL) carrier.
  • SUL supplementary uplink
  • one cell can correspond to one downlink carrier and one uplink carrier.
  • one cell can correspond to one downlink NR carrier and one uplink NR carrier, or one cell can correspond to one downlink NR carrier, one uplink NR carrier, and one SUL carrier.
  • the UE can send an uplink signal to the base station on the NR carrier based on the NR technology.
  • the SUL carrier can be regarded as a carrier shared by the NR system and LTE, and the UE can send uplink signals to the base station on the SUL carrier based on the NR technology or the LTE technology.
  • One carrier for example, one uplink carrier or one downlink carrier, may correspond to a section of frequency resources in the frequency domain.
  • the center frequency and frequency domain range of the carrier can be set, or the start frequency and end frequency of the carrier can be set.
  • the downlink carrier and the uplink carrier are carriers with different frequency ranges.
  • a carrier can be time-divisionally configured as an uplink carrier or a downlink carrier.
  • the BWP or BWP pair can be configured for the UE in the carrier.
  • the method in the embodiments of the present application can be used for both BWP pair-based design and BWP-based design.
  • one BWP in the design based on the BWP pair: one BWP can be used for downlink signal transmission or uplink signal transmission, but it cannot be used for both downlink signal transmission and uplink signal transmission.
  • one or more BWP pairs can be configured for the UE from the carrier's resources for communication between the base station and the UE.
  • a BWP pair may include at least one downlink BWP and at least one uplink BWP.
  • a BWP pair includes a downlink BWP and an uplink BWP, or a BWP pair includes a downlink BWP, an uplink BWP, and a supplementary uplink (SUL) BWP.
  • a BWP such as a downlink BWP or an uplink BWP, may include a continuous frequency domain resource, such as one or more continuous subcarriers, resource blocks (resource block, RB), or resource block group (resource block). group, RBG) and so on.
  • the base station can configure one or more of the following parameters of the BWP for the UE: frequency domain resource location, BWP identifier (ID), subcarrier spacing, and cyclic prefix (CP) type .
  • the base station and the UE communicate on a BWP pair
  • downlink signal transmission is performed on the downlink BWP of the BWP pair
  • uplink signal transmission is performed on the uplink BWP of the BWP pair.
  • the base station sends paging messages, synchronization signals, broadcast channels, PDCCH, PDSCH, and downlink reference signals to the UE on the downlink BWP; and/or, the UE sends PUSCH, PUCCH, and uplink to the base station on the uplink BWP.
  • the synchronization signal and the broadcast channel may be included in a synchronization signal block (synchronization signal block, SSB).
  • the base station may configure one or more (for example, 2, 3, 4, or other numbers) candidate BWP pairs for the UE.
  • the base station may configure at least one active BWP pair for the UE from the multiple candidate BWP pairs.
  • the base station may indicate the BWP pair activated for the UE from the multiple candidate BWP pairs through the BWP indication field in the DCI.
  • the DCI when one DCI is used to schedule PDSCH, the DCI may include a BWP indication field, which is used to indicate the downlink BWP activated by the UE from among multiple downlink BWPs of multiple candidate BWP pairs of the UE; and/or, When one DCI is used to schedule the PUSCH, the DCI may include a BWP indication field, which is used to indicate the uplink BWP activated for the UE from the multiple uplink BWPs of the multiple candidate BWP pairs of the UE.
  • a BWP can be used for both downlink signal transmission and uplink signal transmission.
  • one or more BWPs can be configured for the UE from the carrier's resources for communication between the base station and the UE.
  • a BWP may include a continuous frequency domain resource, for example, including one or more continuous subcarriers, RBs, or RBGs.
  • the BWP may include an uplink part and/or a downlink part.
  • the base station can configure one or more of the following parameters of the BWP for the UE: frequency domain resource location, BWP ID, subcarrier spacing, and CP type.
  • the base station and the UE communicate on the BWP
  • the base station when the base station and the UE communicate on the BWP, if the BWP includes a downlink part, the base station sends a paging message, synchronization signal, broadcast channel, PDCCH, PDSCH to the UE on the downlink part of the BWP , And downlink reference signals; and/or, if the BWP includes an uplink part, the UE sends PUSCH, PUCCH, and uplink reference signals to the base station on the uplink part of the BWP.
  • the base station may configure one or more candidate BWPs for the UE.
  • the base station may configure at least one activated BWP for the UE from the multiple candidate BWPs, and the activated BWP is used for data transmission between the base station and the UE.
  • the base station may indicate the BWP activated for the UE from the multiple candidate BWPs through the BWP indication field included in the DCI.
  • the activated BWP (pair) can be used for data transmission between the base station and the UE, and the BWP (pair) that is not activated can not be used for the base station and the UE for data transmission.
  • the activated BWP (pair) can be used for the base station and UE to transmit PDCCH, PDSCH, PUSCH, and PUCCH, while the unactivated BWP (pair) cannot be used for transmission of these channels.
  • the UE may perform radio resource management (RRM) measurement on the BWP (pair) that is not activated.
  • RRM radio resource management
  • the UE can measure reference signal received power (RSRP) or reference signal received quality (reference signal received quality) based on reference signals such as SSB or channel state information reference signal (CSI-RS). , RSRQ).
  • RSRP reference signal received power
  • CSI-RS channel state information reference signal
  • RSRQ reference signal received quality
  • the working methods of the BWP pair-based design and the BWP-based design are similar, and the differences are mainly as described above.
  • the embodiment of the present application uses a BWP-based design as an example for description.
  • the bandwidth of the activated BWP of the UE may be less than or equal to the bandwidth capability of the UE, or may be greater than the bandwidth capability of the UE, which is not limited in the embodiment of the present application.
  • the bandwidth capability of the UE may be expressed as the maximum bandwidth (including guard band) that the UE and the base station can use simultaneously during data transmission.
  • the bandwidth capability of the UE may be 20 MHz, 10 MHz, or 5 MHz.
  • the DCI format is used to define the types of information fields included in the DCI, and is used to define the length of each information field in the DCI.
  • the length of an information field in the DCI refers to the number of bits included in the information field.
  • DCI 1_0 includes one or more of the following information fields. Among them, the embodiment of this application does not limit the name of DCI 1_0.
  • DCI 1_0 may also be referred to as a downlink fallback DCI format, a first DCI format, or DCI 4_0, etc., which is not limited in the embodiment of the present application.
  • the identifier for DCI formats field of the DCI format is set to 1, indicating that the DCI is a downlink DCI format, that is, it is used to schedule PDSCH.
  • the size or length of an information field can be understood as the number of bits included in the information field.
  • the frequency domain resource allocation field is used to indicate the frequency domain resources allocated for the PDSCH.
  • the time domain resource allocation field is used to indicate the time domain resources allocated for the PDSCH.
  • mapping field from virtual resource block (VRB) to physical resource block (PRB) is used to indicate whether the frequency domain resources allocated for the PDSCH are centralized resource allocation or distributed resource allocation.
  • Modulation and coding scheme (MCS) field used to indicate the modulation mechanism and coding mechanism (for example, code rate) of the PDSCH.
  • the new data indicator (NDI) field is used to indicate whether the downlink data transmitted on the PDSCH is newly transmitted or retransmitted.
  • the redundancy version (redundancy version, RV) field is used to indicate the redundancy version of the PDSCH.
  • the HARQ process number (HARQ process number, HPN) field is used to indicate the hybrid automatic repeat request (HARQ) process number of the PDSCH.
  • the downlink assignment index (DAI) field is used to indicate that the PDSCH is transmitted in multiple downlink transmission time units within the HARQ-based PDSCH transmission window.
  • the transmission time unit may be a time unit such as a transmission time interval, a time slot, and a subframe, which is not limited in the embodiment of the present application.
  • the transmit power control (TPC) command (TPC command for scheduled PUCCH) field of the scheduled PUCCH is used to control the transmit power when the UE sends the PUCCH.
  • the PUCCH resource indicator (PUCCH resource indicator) field is used to indicate the uplink transmission resources required by the UE to send uplink control information.
  • the uplink control information may include PDSCH acknowledgement (acknowledge, ACK)/negative acknowledgement (NACK), and/or channel state information (channel state information, CSI).
  • the uplink transmission resources may include time-frequency resources and PUCCH format types to be used. Among them, different PUCCH formats can be distinguished by the number of symbols occupied by the PUCCH in time, the sequence form used to transmit uplink control information, and the orthogonality of different sequences.
  • the PDSCH-to-HARQ feedback timing indicator field is used to indicate the relationship between the time when the UE sends the HARQ feedback of the PDSCH to the base station and the time when the UE receives the PDSCH from the base station.
  • the reserved bit field includes one or more bits.
  • DCI 1_1 in addition to the information fields included in DCI 1_0, DCI 1_1 also includes one or more of the following information fields. Among them, the embodiment of this application does not limit the name of DCI 1_1.
  • DCI 1_1 may also be referred to as a downlink non-fallback DCI format, a second DCI format, or DCI format 4_1, etc., which is not limited in the embodiment of the present application.
  • the carrier indicator field is used to indicate the carrier where the frequency domain resources allocated for the PDSCH are located. Through this information field, cross-carrier scheduling can be realized, that is, the carrier carrying the control information for scheduling the PDSCH is different from the carrier carrying the PDSCH.
  • the BWP indicator (indicator) field is used to indicate the active BWP of the UE. Among them, the frequency domain resources allocated for the PDSCH are on the activated BWP. Through this information field, cross-BWP scheduling can be realized, that is, the BWP carrying the control information for scheduling the PDSCH is different from the BWP carrying the PDSCH.
  • DCI 1_0 may include the MCS field, NDI field, and RV field corresponding to one transport block
  • DCI 1_1 can indicate the MCS field, NDI field, and RV field corresponding to the two transport blocks respectively;
  • Antenna port indication field indicating the antenna port corresponding to the demodulation reference signal (demodulation reference signal, DMRS) used to demodulate the PDSCH;
  • the transmission configuration indication field is used to indicate the quasico-location (QCL) relationship between different reference signals or between different transmission channels.
  • the reference signal may include a synchronization signal block SSB, a demodulation reference signal (DMRS), CSI-RS, a phase tracking reference signal (PTRS), etc.; the transmission channel may, for example, be PDCCH, PDSCH.
  • the code block group (CBG) transmission information (CBG transmission information, CBGTI) field is used to indicate the transmission information of the code blocks included in the transmission block TB scheduled by the DCI.
  • CBG flushing out information CBG flushing out information, CBGFI
  • CBG flushing out information CBG flushing out information
  • the domain used to indicate the activation of the BWP in the DCI 1_1 and the following DCI 0_1 may be a BWP indicator field or a domain with other names, which is not limited in the embodiment of the present application.
  • the base station may multiplex some or all of the bits in the DAI domain to indicate the active BWP of the UE, or the base station may use the redundancy state of the frequency domain resource allocation domain to indicate the active BWP of the UE.
  • DCI 0_0 is used to schedule uplink data transmission, and includes one or more of the following information fields. Among them, the embodiment of this application does not limit the name of DCI 0_0.
  • DCI 0_0 may also be referred to as an uplink fallback DCI format, a third DCI format, or DCI 3_0, etc., which is not limited in the embodiment of the present application.
  • the identifier for DCI formats field of the DCI format The value is set to 0, indicating that the DCI is an uplink DCI format, that is, it is used for scheduling PUSCH.
  • the frequency domain resource allocation field is used to indicate the frequency domain resources allocated for PUSCH.
  • the time domain resource allocation field is used to indicate the time domain resources allocated for PUSCH.
  • the frequency hopping identifier field is used to indicate whether the UE uses frequency hopping to transmit PUSCH.
  • MCS field used to indicate PUSCH modulation mechanism and coding mechanism (such as code rate);
  • the NDI field is used to indicate whether the uplink data transmitted on the PUSCH is newly transmitted or retransmitted;
  • RV field used to indicate the redundancy version of PUSCH
  • HPN domain is similar to the meaning in DCI 1_0, and PDSCH is replaced with PUSCH, which will not be repeated.
  • the transmit power control command (TPC command for scheduled PUSCH) field of the scheduled PUSCH is used to control the transmit power when the UE sends the PUSCH.
  • Uplink/supplement uplink (SUL) indication field indicating whether the PUSCH used to carry the scheduled PUSCH is an uplink carrier or a supplementary uplink carrier.
  • DCI 0_1 in addition to the information fields included in DCI 0_0, DCI 0_1 also includes one or more of the following information fields. Among them, the embodiment of this application does not limit the name of DCI 0_1.
  • DCI 0_1 may also be referred to as an uplink non-fallback DCI format, a fourth DCI format, or DCI 3_1, etc., which is not limited in the embodiment of the present application.
  • the carrier indicator (carrier indicator) field is used to indicate the carrier where the frequency domain resources allocated for the PUSCH are located. Through this information field, cross-carrier scheduling can be realized, that is, the carrier carrying the control information for scheduling the PUSCH is different from the carrier carrying the PUSCH.
  • the bandwidth part indicator (indicator) field is used to indicate the active BWP of the UE. Among them, the frequency domain resources allocated for PUSCH are on the activated BWP. Through this information field, cross-BWP scheduling can be realized, that is, the BWP carrying the control information for scheduling the PUSCH is different from the BWP carrying the PDSCH.
  • the sounding reference signal (sounding reference symbol, SRS) resource indication field is used to indicate SRS resources.
  • the SRS can be sent by the UE to the base station.
  • the precoding information and number of layers (precoding information and number of layers) field is used to indicate the PUSCH precoding information and the number of transmission layers.
  • Antenna port indication field used to indicate the antenna port of the DMRS of the PUSCH.
  • the SRS request indication field is used to trigger the UE to send aperiodic SRS.
  • the channel state information (CSI) request indication field is used to trigger the UE to send CSI.
  • the CBGTI field is similar to the CBGTI field in DCI format 1_1.
  • the PDSCH is replaced with the PUSCH, which will not be repeated.
  • the size of the first DCI is set to be aligned with the size of the second DCI.
  • the format of the first DCI may be the aforementioned DCI 0_1 or DCI 1_1, or may be DCI in other formats, which is not limited in the embodiment of the present application.
  • the DCI of the other format is used to indicate the active BWP of the UE, and has a BWP handover function.
  • the DCI of the other format may include one or more parameters among DCI 0_0, DCI 0_1, DCI 1_0, and/or DCI 1_1.
  • the embodiments of this application do not make limitations.
  • the base station and the UE can update the UE's activated BWP
  • the PDSCH and/or PUSCH are transmitted on the activated BWP indicated by the first DCI. If the first DCI is also used to schedule a physical data channel, the physical data channel is transmitted on the activated BWP indicated by the first DCI.
  • the format of the second DCI in the method shown in FIG. 1 may be the foregoing DCI 0_0 or DCI 1_0, or may be DCI in other formats, which is not limited in the embodiment of the present application. Among them, the DCI of this other format is not used to indicate the UE's active BWP, and does not have a BWP handover function.
  • the DCI of the other format may include one or more parameters among DCI 0_0, DCI 0_1, DCI 1_0, and/or DCI 1_1.
  • the embodiments of this application do not make limitations.
  • one or more search spaces may be configured for the UE.
  • the search space may include one or more parameters, and any parameter of the search space may be predefined by a protocol or indicated by the base station to the UE through signaling.
  • the configuration modes of different parameters of the same search space may be the same or different; the configuration modes of the parameters of different search spaces may be the same or different, which is not limited in the embodiment of the present application.
  • the search space of the UE may be configured (indicated) by the base station for the UE through signaling, or may be predefined. On one BWP of the UE or on one carrier, one or more search spaces can be configured for the UE.
  • the signaling sent by the base station for the UE can be any of the following signaling: broadcast messages, system information, radio resource control (RRC) signaling, media Access control (media access control, MAC) control element (CE), or DCI.
  • RRC radio resource control
  • CE media Access control
  • DCI DCI
  • search space type is a common search space (common search space, CSS) or a UE-specific search space (UE-specific search space) in a predefined manner or a manner indicated by the base station through signaling for the UE. , USS).
  • common search space common search space
  • UE-specific search space UE-specific search space
  • the characteristics of the common search space and the UE-specific search space are compared as follows: the DCI transmitted in the common search space is the common DCI, the common DCI is for all UEs in the cell where the UE is located, or the common DCI is for For a group of UEs where the UE is located, the group of UEs is part of the UE in the cell; the DCI transmitted in the UE-specific search space is the UE-specific DCI, and the specific DCI is for the UE. Further, the common search space may be configured to allow transmission of UE-specific DCI.
  • the second DCI is a common DCI.
  • the cyclic redundancy check (CRC) bit of the public DCI may be scrambled by the base station according to the public wireless network temporary identifier (RNTI).
  • RNTI public wireless network temporary identifier
  • the UE detects the common DCI, it uses the common RNTI to try to descramble the DCI. If the descrambling is correct, it is considered that the common DCI has been received.
  • the public RNTI can be learned by the UE, for example, it is predefined by the protocol, or is indicated to the UE by the base station in advance.
  • public RNTI includes but is not limited to: system information RNTI (RNTI, SI-RNTI), paging radio network temporary identifier (P-RNTI), or random access RNTI (random access) RNTI, RA-RNTI).
  • RNTI system information RNTI
  • SI-RNTI system information RNTI
  • P-RNTI paging radio network temporary identifier
  • random access RNTI random access RNTI
  • the public DCI can be used to schedule public information.
  • the common information can be carried on the physical data channel scheduled by the common DCI.
  • the public information includes but is not limited to: system messages, paging messages, or random access response (RAR).
  • the CRC bit of the DCI is scrambled according to the SI-RNTI, and the PDSCH scheduled by the DCI carries a system information block (SIB), and the SIB is used to send information to the cell
  • SIB system information block
  • the UE broadcasts system messages; the CRC bits of the DCI are scrambled according to the P-RNTI, and the PDSCH scheduled by the DCI carries a paging message, which is used to page a group of UEs; or, the DCI's
  • the CRC bit is scrambled according to the RA-RNTI, and the PDSCH scheduled by the DCI carries the RAR.
  • the first DCI is a UE-specific DCI.
  • the CRC bit of the UE-specific DCI may be scrambled by the base station according to the UE-specific RNTI.
  • the UE detects a specific DCI it uses the UE specific RNTI to try to descramble the DCI. If the descrambling is correct, it is considered that the UE-specific DCI has been received.
  • UE-specific RNTI includes but is not limited to: cell radio network temporary identifier (C-RNTI), semi-persistent scheduling (SPS)-RNTI, MCS-C-RNTI, semi-persistent channel status Information (semi-persistent channel state information, SP-CSI)-RNTI, or configured scheduling (configured scheduling, CS)-RNTI.
  • C-RNTI cell radio network temporary identifier
  • SPS semi-persistent scheduling
  • MCS-C-RNTI semi-persistent scheduling Information
  • SP-CSI semi-persistent channel state information
  • CS configured scheduling
  • one or more public search spaces may be configured, and the first public search public search space may be one or more (part of or all) public search spaces among the multiple public search spaces.
  • One or more UE-specific search spaces can be configured for the UE, which is not limited in the embodiment of the present application.
  • the first specific search space may be one or more specific search spaces among multiple specific search spaces of the UE.
  • the UE-specific DCI can be transmitted in the common search space.
  • the first DCI can be transmitted in the second common search space. That is, the first search space may be the second common search space.
  • the second public search space and the first public search space may be the same or different, which is not limited in the embodiment of the present application.
  • the base station can send a specific RNTI scrambled specific DCI and a common RNTI scrambled common DCI to the UE.
  • the UE blindly detects the DCI, by descrambling the DCI, the RNTI used to scramble the DCI can be obtained, so that it can be obtained whether the DCI is a UE-specific DCI or a common DCI.
  • one or more of the following parameters of the search space can be configured in a predefined manner or a manner indicated by the base station through signaling for the UE: frequency domain resource location, aggregation level size, number of candidate PDCCHs, The detection period, the location of the time domain resource, the format of the DCI corresponding to the search space (that is, the format of the DCI that can be transmitted in the search space), and the size of the DCI transmitted in the search space.
  • the time domain resource location includes: the first time unit (such as a time slot) offset of the search space in the detection period, the number of consecutive first time units occupied by the search space in the detection period, and each first time unit The offset of the second time unit (such as the symbol) of the search space in the time unit, and the number of second time units occupied by the search space in each first time unit.
  • the first time unit such as a time slot
  • the second time unit such as the symbol
  • the frequency domain resource location of the search space and the number of second time units in the search space in each first time unit can be configured in the following manner: the base station indicates to the UE the control resource set corresponding to the search space (control resource set, CORESET), the parameters of the CORESET can be regarded as the parameters of the search space.
  • the CORESET can be configured in a predefined manner or a manner indicated by the base station through signaling for the UE: the frequency domain resource location and the number of second time units of the CORESET in each first time unit.
  • one CORESET may correspond to one search space, or may correspond to multiple different search spaces, which is not limited in the embodiment of the present application.
  • the search space A corresponds to CORESET A, which occupies 3 symbols in the time domain.
  • the detection cycle of search space A is 10 time slots
  • the offset of search space A in the detection cycle is 3 time slots
  • the continuous time slots occupied by search space A in the detection cycle are 2 time slots, each time slot
  • the symbol offset of the search space A in the slot is 3 symbols.
  • the time domain position of the search space A is: the 4th symbol to the 6th symbol in the 4th slot and the 5th slot in every 10 slots. That is, in every 10 time slots, the time domain position of search space A is the 4th to 6th symbols in the 4th time slot, and the 4th to 6th symbols in the 5th time slot .
  • the frequency domain resources of the search space A are the same as the frequency domain resources of CORESET A.
  • the size of the DCI (first DCI) transmitted in the first search space of the UE and the size of the DCI (second DCI) transmitted in the first common search space of the UE are the same, that is, the first search space Configuring the same DCI size as the first common search space can reduce the number of times that the UE blindly detects the PDCCH.
  • the first search space is the first specific search space.
  • the UE detects the DCI in the first specific search space or the first common search space, the UE does not know whether the base station will send the DCI in the search space or how many corresponding types of DCI will be sent by the base station.
  • the search space corresponds to DCI of multiple sizes, for example, it corresponds to multiple DCI formats of different sizes, and/or the DCI of one format is scrambled by different RNTIs, resulting in different DCI sizes.
  • the UE when the UE detects DCI in the search space, the UE needs to perform blind detection at most on each PDCCH candidate resource position in the search space through blind detection, and at most needs to perform blind detection on each PDCCH candidate resource position according to DCI of each size is blindly detected to try to receive the DCI transmitted in the search space.
  • the UE may have received DCI in this search space, or it may not have received DCI in this search space.
  • the method shown in FIG. 1 can reduce the number of times that the UE blindly detects the PDCCH.
  • the UE needs to detect twice the number of times; however, if the first common search space and the first specific search space have different DCI sizes; The DCI size of a specific search space is the same, and the UE only needs to detect 1 times the number of times.
  • FIG. 2 is a schematic diagram of a flow of transmitting the first DCI and the second DCI between the base station and the UE.
  • a base station sends configuration information of a first common search space for the UE.
  • the UE receives the configuration information of the first common search space.
  • the message carrying the configuration information of the first public search space may also carry the configuration information of other public search spaces (for example, the second public search space), which is not limited in the embodiment of the present application.
  • the base station sends configuration information of the first specific search space for the UE.
  • the UE receives the configuration information of the first specific search space.
  • the message carrying the configuration information of the first specific search space may also carry the configuration information of other specific search spaces (for example, the second specific search space), which is not limited in the embodiment of the present application.
  • the configuration information of the first common search space in operation 201 and the configuration information of the first specific search space in operation 202 may be carried in one message or in different messages. No restrictions.
  • the base station sends a second DCI to the UE in the first common search space, and the second DCI is used for scheduling common information.
  • the UE detects the second DCI from the base station in the first common search space.
  • the base station sends the common information scheduled by the second DCI to the UE.
  • the UE receives the public information sent by the base station.
  • the base station sends a second DCI for the UE.
  • the base station sends the PDSCH scheduled by the second DCI for the UE, and the PDSCH carries system messages.
  • the UE detects the second DCI from the base station in the first common search space, and the UE may or may not detect the second DCI. If the UE detects the second DCI, it can use the transmission parameters indicated by the second DCI to receive the PDSCH to obtain the system message carried on the PDSCH.
  • the base station sends two second DCIs for the UE.
  • the base station sends the PDSCH scheduled by the first second DCI to the UE, and the PDSCH carries system messages; and sends the PDSCH scheduled by the second second DCI to the UE, and the PDSCH carries the paging message.
  • the UE detects the second DCI from the base station in the first common search space.
  • the UE may detect one second DCI, may also detect two DCIs, or may not detect the second DCI. If the UE detects the first second DCI, it can use the transmission parameters indicated by the second DCI to receive the PDSCH to obtain the system message carried on the PDSCH. If the UE detects the second DCI, it can use the transmission parameters indicated by the second DCI to receive the PDSCH, and obtain the paging message carried on the PDSCH.
  • the base station sends the first DCI to the UE in the first specific search space.
  • the base station and the UE transmit the PDSCH or PUSCH scheduled by the first DCI.
  • the base station sends a first DCI for the UE.
  • the base station sends the PDSCH scheduled by the first DCI for the UE, and the PDSCH carries specific information of the UE.
  • the UE detects the first DCI from the base station in the first specific search space, and the UE may or may not detect the first DCI. If the UE detects the first DCI, it can use the transmission parameters indicated by the first DCI to receive the PDSCH, and obtain the specific information of the UE carried on the PDSCH.
  • the base station sends two first DCIs for the UE, where the first first DCI is used to schedule the PDSCH, and the second first DCI is used to schedule the PUSCH.
  • the base station sends the first PDSCH scheduled by the first DCI for the UE, and the PDSCH carries specific information of the UE.
  • the UE detects the first DCI from the base station in the first specific search space. The UE may detect one first DCI, may also detect two first DCIs, or may not detect the first DCI.
  • the UE may use the transmission parameters indicated by the first DCI to receive the PDSCH, and obtain the specific information of the UE carried on the PDSCH. If the UE detects the second first DCI, it can use the transmission parameters indicated by the first DCI to send a PUSCH to the base station, and the PUSCH carries specific information of the UE.
  • the base station may also send the first DCI to the UE in the first common search space.
  • the operations are similar to 205 and 206, just replace the first specific search space with the first common search space, which will not be repeated here.
  • the UE attempts to descramble the DCI through possible RNTIs. If the descrambling is correct, the UE can obtain the RNTI used to scramble the DCI, so that it can be obtained whether the DCI is a common DCI or a UE-specific DCI .
  • operations 201 and 202 may be executed in the same time unit.
  • operations 203-206 may be performed in the same time unit; or operations 203 and 204 are performed in one time unit, and operations 205 and 206 are performed in another time unit.
  • the method shown in FIG. 1 may be any of the following cases 1 to 4.
  • the first DCI can only be used to schedule PDSCH.
  • the first DCI can only be used to schedule PUSCH.
  • Case 3 The first DCI is used to schedule PDSCH or PUSCH.
  • the first DCI can be used to schedule PDSCH and PUSCH, but one first DCI cannot be used to schedule PDSCH and PUSCH at the same time.
  • the first DCI may also be used to indicate whether the first DCI is used to schedule PDSCH or PUSCH.
  • the type of the size of the first DCI that the UE needs to detect is further reduced, that is, the DCI for scheduling the PDSCH and the DCI for scheduling the PUSCH are the same in size, thereby reducing the detection of the DCI by the UE. The number of times.
  • the first DCI may include an identification field of the DCI format, which is used to indicate whether the first DCI is used to schedule PDSCH or PUSCH.
  • the first DCI includes a 1-bit indicator field, when the value of the indicator field is the first value, the first DCI is used for scheduling PUSCH, and when the indicator field is the second value, the first DCI is used for scheduling PDSCH.
  • the first value and the second value may be 1 and 0 respectively, or may be 0 and 1, respectively, which is not limited in the embodiment of the present application.
  • the UE determines whether the first DCI is used for scheduling PDSCH or PUSCH according to the value of the 1-bit indication field, so that the first DCI can be interpreted according to the corresponding DCI format.
  • the first DCI when the first DCI is scrambled by the first RNTI, the first DCI is used to schedule the PUSCH, and when the first DCI is scrambled by the second RNTI, the first DCI is used to schedule the PDSCH.
  • the UE receives the first DCI, if the UE uses the first RNTI to successfully descramble the first DCI, the UE considers that the first DCI is used for scheduling the PUSCH, and can interpret the first DCI according to the DCI format of the PUSCH.
  • the UE uses the second RNTI to descramble the first DCI successfully, the UE considers that the first DCI is used to schedule the PDSCH, so that it can be based on the DCI format of the PDSCH Interpret the first DCI, and use the information indicated by the first DCI to receive the PDSCH from the base station.
  • the types of information fields included in the DCI format used to schedule PDSCH and the DCI format used to schedule PUSCH may all be the same, or all may be different, or some of the same may be different. No restrictions. If the two DCI formats include the same type of information field, for example, both include the frequency domain resource allocation field, the length of the frequency domain resource allocation field (such as the number of bits) in the DCI used for scheduling PDSCH and the length (such as the number of bits) used for scheduling PUSCH The length of the frequency domain resource allocation field in the DCI may be the same or different, which is not limited in the embodiment of the present application.
  • the first DCI is used to schedule PDSCH and/or PUSCH.
  • the first DCI can be used to schedule PDSCH or PUSCH.
  • One first DCI may be used only for scheduling PDSCH, only for scheduling PUSCH, or both for scheduling PDSCH and PUSCH.
  • the first DCI may also be used to indicate whether the first DCI is used to schedule PDSCH, PUSCH, or PDSCH and PUSCH.
  • the type of the size of the first DCI that the UE needs to detect is further reduced, that is, the DCI used for scheduling PDSCH, the DCI used for scheduling PUSCH, and the DCI of the three formats of PDSCH and PUSCH.
  • the size is the same, so that the number of times the UE detects DCI can be reduced.
  • the first DCI When the first DCI is used to schedule the PUSCH, the first DCI includes the transmission parameters of the PUSCH but does not include the transmission parameters of the PDSCH. When the first DCI is used to schedule the PDSCH, the first DCI includes the transmission parameters of the PDSCH, but does not include the transmission parameters of the PUSCH. When the first DCI is used to schedule PDSCH and PUSCH at the same time, the first DCI includes transmission parameters of PDSCH and PUSCH at the same time.
  • the first DCI may include an identification field of the DCI format, which is used to indicate whether the first DCI is used for scheduling PDSCH, PUSCH, or PDSCH and PUSCH.
  • the first DCI includes a 2-bit indicator field.
  • the value of the indicator field is the first value
  • the first DCI is used to schedule the PUSCH
  • the indicator field is the second value
  • the first DCI is used to schedule the PDSCH.
  • the indication field is the third value
  • the first DCI is used to schedule PDSCH and PUSCH.
  • Table 2a-Table 2c give an exemplary correspondence between the value of the 2-bit indication field in the first DCI and the information scheduled by the first DCI, and other possible correspondences will not be listed one by one.
  • the first DCI when the first DCI is scrambled by the first RNTI, the first DCI is used to schedule the PUSCH; when the first DCI is scrambled by the second RNTI, the first DCI is used to schedule the PDSCH, and when the first DCI is When scrambled by the third RNTI, the first DCI is used to schedule PDSCH and PUSCH.
  • the UE When the UE receives the first DCI, if the UE uses the first RNTI to successfully descramble the first DCI, the UE considers that the first DCI is used to schedule the PUSCH, so that the first DCI can be interpreted according to the DCI format of the PUSCH, and Use the transmission parameters indicated by the first DCI to send the PUSCH to the base station; if the UE uses the second RNTI to successfully descramble the first DCI, the UE considers that the first DCI is used to schedule the PDSCH, so that the first DCI can be adjusted according to the DCI format of the PDSCH.
  • the DCI is interpreted and the transmission parameters indicated by the first DCI are used to receive the PDSCH from the base station; if the UE uses the third RNTI to successfully descramble the first DCI, the UE considers that the first DCI is used to schedule the PDSCH and PUSCH, which can be based on
  • the corresponding DCI format interprets the first DCI, and uses the transmission parameters of the PUSCH indicated by the first DCI to send the PUSCH to the base station, and uses the transmission parameters of the PDSCH indicated by the first DCI to receive the PDSCH from the base station.
  • the first search space is the first specific search space of the UE.
  • the first specific search space of the UE is included in multiple specific search spaces of the UE, for example, 2, 3, 4 or more. Any one of the multiple specific search spaces may correspond to N1 DCI formats.
  • N1 is a positive integer greater than or equal to 1
  • the N1 values corresponding to any two different specific search spaces can be the same or different; if the N1 values corresponding to the two different specific search spaces are the same, their corresponding DCI
  • the specific format can be the same or different, which is not limited in the embodiment of the present application.
  • the multiple specific search spaces correspond to a total of N2 DCI formats.
  • the DCI of the N2 DCI formats has the same DCI size when transmitted in the corresponding specific search space, where N1 is an integer greater than or equal to 1, and N2 is an integer greater than or equal to N1 .
  • the specific search space corresponds to N1 DCI formats, and N1 is greater than 1, the DCI sizes corresponding to the N1 DCI formats are the same, then for the N1 DCI formats, you can Different formats of DCI are distinguished by the indication field in the DCI and/or the RNTI used to scramble the DCI.
  • the specific search space corresponds to DCI format A and DCI format B, and DCI A and DCI B can be distinguished in any of the following ways:
  • DCI A and DCI B include the identification field of the DCI format, which is used to indicate whether the DCI format is DCI A or DCI B.
  • the UE receives a DCI that includes a 1-bit indicator field.
  • the value of the indicator field is the first value
  • the format of the DCI is DCI A.
  • the indicator field is the second value
  • the DCI The format is DCI B.
  • the first value and the second value may be 1 and 0 respectively, or may be 0 and 1, respectively, which is not limited in the embodiment of the present application.
  • Method B DCI A and DCI B are scrambled by RNTI, and the RNTI is used to indicate whether the format of the DCI is DCI A or DCI B. For example, if the UE receives a DCI, if the DCI is successfully descrambled using RNTI A, the format of the DCI is considered to be DCI A, and if the DCI is successfully descrambled using RNTI B, the format of the DCI is considered to be DCI B.
  • DCI A and DCI B include the DCI format identification field, and DCI A and DCI B are scrambled by RNTI, the identification field and the RNTI together indicate whether the DCI format is DCI A or DCI B.
  • the UE receives a DCI, and the DCI includes a 1-bit indicator field. If the DCI is successfully descrambled using RNTI A and the value of the indicator field is the first value, the format of the DCI is considered to be DCI A, If the DCI is successfully descrambled using RNTI B and the value of the indication field is the second value, the format of the DCI is considered to be DCI B.
  • this method can be used in combination with the method shown in FIG. 1.
  • the size of the DCI and the size of the second DCI transmitted in the plurality of specific search spaces are configured to correspond to the same DCI size.
  • the method may be used independently of the method shown in FIG. 1.
  • the DCI transmitted in the multiple specific search spaces may be aligned with the size of the second DCI in the method shown in FIG. 1, or may be aligned with another size .
  • the other size may be a predefined value, or may be a DCI size corresponding to one of the N2 DCI formats.
  • the DCI size is the smallest DCI size among the DCI sizes corresponding to the N2 DCI formats, or the largest DCI size among the DCI sizes corresponding to the N2 DCI formats.
  • the multiple specific search spaces may be part of the specific search spaces configured for the UE, or may be all specific search spaces configured for the UE, which are not limited in the embodiment of the present application.
  • the multiple specific search spaces are all specific search spaces configured for the UE in one BWP of the UE.
  • the UE has three specific search spaces, namely, a specific search space A, a specific search space B, and a specific search space C.
  • the DCI format corresponding to each search space is shown in Table 3.
  • the DCI transmitted in the specific search space A can be regarded as the first DCI
  • the first format is the format when the first DCI schedules the PDSCH
  • the second format is the format when the first DCI schedules the PUSCH
  • the specific search space A can Think of it as the first specific search space.
  • the three specific search spaces in Table 3 correspond to a total of four DCI formats: the first format, the second format, the third format, and the fourth format.
  • the sizes of the DCIs transmitted in the multiple specific search spaces of the UE are the same, that is, the multiple specific search spaces are configured to correspond to a type of DCI size, and when the multiple specific search spaces of the UE have overlapping parts, The number of times that the UE blindly detects the PDCCH can be reduced.
  • the base station when the base station sends DCI to the UE, at least one of the following operations 1 to 6 may be performed on the DCI.
  • the UE can perform corresponding reverse operations when receiving DCI. Such as: de-stuffing, adding truncated information bits, descrambling, de-channel coding, and/or demodulation, etc., which will not be repeated here.
  • operation 1 Obtain the DCI according to the format corresponding to the DCI.
  • the information bits in the DCI may be referred to as the original bit stream of the DCI.
  • operation 2 truncating or filling the input bit stream to obtain a truncated or filling bit stream.
  • the input bit stream can be the original bit stream.
  • the truncated information domain may be one or more of the following information domains: frequency domain resource allocation domain, time domain resource allocation domain, MCS, and other possible information domains.
  • operation 3 Add a cyclic redundancy check (cyclic redundancy check, CRC) check bit to the input bit stream to obtain a CRC bit stream.
  • CRC check bit can be used for error detection by the UE.
  • the input bitstream of operation 3 may be the original bitstream, or may be a truncated or padded bitstream.
  • operation 4 channel coding the input bit stream to obtain a channel coded bit stream.
  • the method of channel coding may be low density parity check codes (LDPC), polar codes (polar codes), or turbo codes (Turbo codes).
  • the coding rate can be a real number greater than 0 such as 1/2, 1/3, 2/3, etc.
  • the channel coding operation may also include a rate matching operation.
  • the rate matching operation can be understood as the UE, according to the number of resources corresponding to data transmission and the modulation order of the data transmission, passes the output bit stream after channel coding through the rate matching operation to obtain output bits that match the data transmission resource and modulation order. flow.
  • the input bit stream of operation 4 may be the original bit stream, the truncated or filled bit stream, or the CRC bit stream.
  • the input bit stream is scrambled based on a scrambling sequence to obtain a scrambled bit stream.
  • Performing a scrambling operation can reduce inter-cell interference.
  • the input bit stream of operation 5 may be an original bit stream, a truncated or filled bit stream, a CRC bit stream, or a channel coded bit stream.
  • the input bit stream is modulated to obtain a modulation symbol.
  • the modulation method may be QAM modulation, and the modulation order may be 16QAM, 64QAM, or 128QAM, etc., which is not limited in the embodiment of the present application.
  • the input bit stream of operation 6 may be an original bit stream, a truncated or filled bit stream, a CRC bit stream, a channel coded bit stream, or a scrambled bit stream.
  • one DCI A for example, the first DCI
  • another DCI B for example, the second DCI
  • DCI A is the first DCI
  • DCI B is the second DCI
  • DCI A is the second DCI
  • DCI B is the first DCI
  • DCI A is the DCI in the first specific search space
  • DCI B is The DCI in the second specific search space is not limited in the embodiment of this application.
  • DCI A Obtain DCI A according to the DCI format corresponding to DCI A, and obtain DCI B according to the DCI format corresponding to DCI B.
  • the number of bits included in DCI A is the same as the number of bits included in DCI B. That is, the number of bits in the original bit stream of DCI A is the same as the number of bits in the original bit stream of DCI B.
  • the original bit stream of DCI may also be referred to as the information bit stream of DCI.
  • DCI A and DCI B can be aligned by truncating or filling the bit stream, then if it is determined that the original bit stream of DCI A and the original bit stream of DCI B have the same number of bits, There is no need to cut or fill the bit stream for DCI A or DCI B.
  • the first operation may include: adding CRC; adding CRC and channel coding; adding CRC and scrambling; or, adding CRC, channel coding and scrambling.
  • the first operation may also include truncation or padding.
  • the second operation may include: modulation; adding CRC and modulation; channel coding and modulation; scrambling and modulation; adding CRC, channel coding and modulation; adding CRC, scrambling and modulation; or, adding CRC, channel coding, and adding Disturbance and modulation.
  • the second operation may also include truncation or padding.
  • the base station in order to make the size of the different DCIs sent by the base station to the UE are the same, the base station can fill or shorten one or more of the DCIs, so that the sizes of these different DCIs are aligned to same.
  • the different DCI may be the first DCI and the second DCI, or may be the DCI transmitted in different specific search spaces of the UE.
  • the first DCI and the second DCI are taken as examples for description.
  • the base station may fill or shorten the original bit stream of the first DCI, so that its size is aligned with the size of the second DCI.
  • the base station may fill or shorten the original bit stream of the second DCI, so that its size is aligned to the size of the first DCI.
  • the alignment of the first DCI to the second DCI is taken as an example for description.
  • the first DCI includes stuffing bits.
  • the stuffing bit includes at least one bit.
  • the value of the at least one bit is pre-configured and is known to both the base station and the UE.
  • the value of each bit of the at least one bit is 0.
  • the value of each bit of the at least one bit is 1.
  • the position of the padding bit in the first DCI or the padding rule may be predefined.
  • the padding bit may be added before the highest bit information or after the lowest bit information of the first DCI. This rule is known beforehand by the base station and the UE.
  • the base station determines the first DCI according to the DCI format corresponding to the first DCI, if the size of the first DCI is smaller than the size of the second DCI, the base station fills the first DCI. Assuming that the value of the filled bit is zero, it is considered that the base station has performed a zero-padded operation on the first DCI, and the size of the first DCI after zero-padded is equal to the size of the second DCI.
  • the base station sends the zero-padded first DCI to the UE.
  • the UE can obtain the size of the first DCI before zero padding according to the DCI format corresponding to the first DCI, and obtain the size of the second DCI according to the format corresponding to the second DCI, so that the UE can determine the size of the zero padding information bits in the first DCI Number of bits.
  • the UE After receiving the first DCI from the base station, the UE removes the zero-padded information bits from the first DCI or ignores the zero-padded information bits in the first DCI. Therefore, the UE can determine the first DCI according to the non-zero-padded information bits in the first DCI.
  • the content of a DCI is a DCI.
  • the UE may receive the PDSCH from the base station according to the determined content of the first DCI.
  • the first DCI is used to schedule the PUSCH, and the UE may send the PUSCH to the base station according to the determined content of the first DCI.
  • the first DCI includes a truncated information field.
  • the truncated information field includes one or more information fields, and one or more bits can be truncated in each information field.
  • the number of bits truncated for different types of information fields can be the same or different.
  • Which (or which) information fields in the first DCI are truncated is predefined, and the rules for performing truncation operations in this information field are predetermined, that is, the base station and the UE know in advance which (or which ones) of the first DCI are )
  • the information field is truncated, which (or which bits will be truncated) in the information field.
  • truncating the bits in the information field of the DCI or performing a truncation operation on the DCI can be described as: puncturing the DCI or the information field in the DCI.
  • the base station determines the first DCI according to the DCI format corresponding to the first DCI, if the size of the first DCI is greater than the size of the second DCI, the base station truncates the first DCI.
  • the first DCI includes a frequency domain resource allocation field, and the base station truncates the high-order information bits in this field, so that the frequency-domain resource allocation field of the first DCI does not include these high-order information bits, but only includes other than these high-order information bits.
  • the low-order information bits other than those.
  • the first DCI includes the information fields of two transport blocks, and the base station truncates the information field of one of the transport blocks, so that the first DCI only includes the information field of the other transport block.
  • the size of the truncated first DCI is equal to the size of the second DCI.
  • the UE supplements the high-order bits of the received frequency-domain resource allocation field of the first DCI with 2 bits, and the value of these 2 bits is 00, the UE Interpret the frequency domain resource allocation domain after zero padding.
  • the base station may multiplex other information fields to indicate the truncated information field.
  • the information field of the predefined second transmission block can be multiplexed to indicate the first and second transmission blocks.
  • the UE may determine the transmission information corresponding to the second transmission block according to the information field of the first transmission block included in the first DCI.
  • the UE may determine that the transmission information of the second transmission block is the same as the transmission information of the first transmission block, or the UE may determine the second transmission block according to the offset information between the transmission information of the first transmission block and the second transmission block. Corresponding transmission information.
  • the offset information may be predefined, or may be notified to the UE by the base station through signaling. For example, if the information field of the first transport block indicates MCS 1 and RV 1, then after receiving the first DCI, the UE determines that the MCS of the first transport block and the second transport block are both MCS 1, and determines the first transport block The RV of the second transmission block and the second transmission block are both RV 1.
  • the first DCI may be used to indicate the active BWP of the UE, and the active BWP is used to transmit the physical data channel between the UE and the base station.
  • the first DCI may also include a frequency domain resource allocation field, which is used to indicate frequency domain resources allocated for the physical data channel in the activated BWP.
  • the physical data channel carries specific information of the UE.
  • the size of the frequency domain resource allocation domain in the first DCI may be determined according to the bandwidth of the initial BWP or the bandwidth of a control resource set (CORESET) 0.
  • the REDCAP terminal and the high-capability terminal can share the initial BWP and CORESET 0, or they can be configured with independent initial BWP and CORESET 0 respectively.
  • the initial BWP and CORESET 0 in the frequency domain resource allocation method can be the initial BWP and CORESET 0 configured for the REDCAP terminal, or it can be a high-capability terminal Configured initial BWP and CORESET 0.
  • the base station may send the SSB to the UE in the initial BWP.
  • the SSB can carry a master information block (master information block, MIB).
  • MIB can be used to indicate the resource location of the initial BWP.
  • the UE After searching for the SSB, the UE can obtain the specific resource location of the initial BWP according to the configuration of the MIB in the SSB.
  • the base station can also send one or more of the following public information to the UE through the PDSCH: system information block (SIB) 1, on-demand system information (OSI), And paging messages.
  • SIB system information block
  • OSI on-demand system information
  • the SSB is cell-level public information, and the SSB may include a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel.
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • the MIB is carried on the PBCH.
  • the SSB used to indicate the configuration information of the initial BWP may also be referred to as a cell defined SSB.
  • the configuration information of CORESET 0 may be pre-configured or indicated by the base station for the UE through signaling.
  • the signaling may be the common configuration message PDCCH-ConfigCommon of MIB or PDCCH.
  • the MIB may indicate one or more of the following parameters of CORESET 0: the frequency domain resource position in the carrier, the number of symbols occupied in the time domain, and the multiplexing mode between CORESET 0 and SSB.
  • CORESET 0 can be associated with the search space, and the UE can detect the corresponding DCI in the resource corresponding to CORESET 0 according to the configuration of the search space.
  • the search space associated with CORESET 0 is the public search space.
  • DCI scrambled by a common RNTI for example, SI-RNTI
  • the common search space may also transmit DCI scrambled by the UE-specific RNTI.
  • the following description takes the size of the frequency domain resource allocation field in the first DCI is determined according to the bandwidth of the UE's initial BWP as an example, when the size of the frequency domain resource allocation field is determined according to the bandwidth of CORESET 0 At this time, replace the initial BWP in the following method with COREST 0, and replace the bandwidth of the initial BWP with the bandwidth of CORESET 0.
  • the frequency domain resource allocation field in the first DCI may indicate the frequency domain resources allocated for the PDSCH or PUSCH of the UE in the active BWP of the UE in the following ways. Wherein, if the frequency domain resource of the PDSCH of the UE is indicated, the UE may receive the PDSCH from the base station in the frequency domain resource. If the frequency domain resource of the PUSCH of the UE is indicated, the UE may send the PUSCH to the base station in the frequency domain resource.
  • the first way (way 0).
  • the frequency domain resource allocation domain in the first DCI includes N RBG bits.
  • the N RBG bits correspond to the N RBG RBGs in the activated BWP on a one-to-one basis.
  • the resource allocated to the UE includes the RBG corresponding to the one bit; when the value of the bit is the second value (Such as 0) or when it is not the first value, the resource allocated to the UE does not include the RBG corresponding to the one bit.
  • N RBG is less than or equal to the number of RBGs included in the initial BWP.
  • one RBG includes a positive integer number of RBs, and the number of RBs included may be referred to as the size of the RBG.
  • One RB includes a positive integer number of subcarriers.
  • each RB is predefined to include 6 or 12 subcarriers.
  • the size of an RBG may be predefined, for example, a predefined RBG includes 2, 4, 6, 8 or 16 RBs.
  • the size of an RBG may be determined according to the bandwidth of a certain bandwidth (denoted as bandwidth X).
  • Table 4 shows the correspondence between the bandwidth of the bandwidth X and the size of the RBG (configuration 1 or configuration 2), where the bandwidth X is the bandwidth of the BWP.
  • the number of RBGs included in the initial BWP is based on the bandwidth of the initial BWP and the RBG size of the initial BWP definite.
  • the bandwidth of the initial BWP is the number of RBs included in the initial BWP with Is a positive integer.
  • the RBG size of the initial BWP can be predefined; or, it can be determined according to the bandwidth of the initial BWP. For example, the bandwidth X in Table 4 above is replaced with the initial BWP, and the Replace with You can get the size of the RBG of the initial BWP
  • the initial BWP CCP includes RBG.
  • Example one equal when Can be When divisible, each RBG has the same size, which is Example two, no matter Can it be Divide, equal in Represents the RB index corresponding to the initial RB of the initial BWP.
  • the size of the first RBG included in the initial BWP is if Then the size of the last RBG in the initial BWP is Otherwise, the size of the last RBG is
  • mod represents modulo operation.
  • the same variable has the same meaning, and the meaning of the variable that has been described is not repeated below.
  • the N RBG in the above method 0 method is equal to the number of RBGs included in the initial BWP
  • the size of one RBG for activating the BWP is predefined or determined according to the bandwidth of the activated BWP.
  • the bandwidth of the activated BWP and the size of the RBG in the activated BWP are shown in Table 4. Similar to the above method of determining the RBG size and the number of RBGs of the initial BWP according to Table 4, the RBG size of the activated BWP can be obtained.
  • the maximum capable of indicating activation of the first DCI BWP RBG RBG is the N, which indicates the RBG N RBG RBG is assigned to the UE.
  • the N RBG RBGs are all RBGs in the activated BWP.
  • first DCI maximum can be indicated in the activation BWP RBG RBG is N, which indicates the RBG N RBG RBG is assigned to the UE.
  • the N RBG RBGs are part of the RBG in the activated BWP.
  • the bandwidth of the activated BWP indicated by the first DCI is greater than the bandwidth of the initial BWP
  • some or all of the bits in the other information fields in the first DCI may be multiplexed to indicate more of the activated BWP.
  • RBG is allocated to UE.
  • the information domain that can be multiplexed may be, for example, one or more of the following information domains: DAI domain, PUCCH resource indication domain, MCS domain, time domain resource allocation domain, and frequency domain resource allocation domain.
  • the number of bits to be multiplexed is At this time, the N RBG bits in the frequency domain resource allocation domain and the A total of bits Bits, the Bits and activate the BWP There is a one-to-one correspondence between RBGs.
  • the base station can indicate which RBGs of some or all of the RBGs in the activated BWP are allocated to the UE.
  • the bandwidth of the activated BWP indicated by the first DCI is less than the bandwidth of the initial BWP, and the N RBG in the method 0 above is less than or equal to the number of RBGs included in the initial BWP At this time, N RBG RBGs are included in the activated BWP.
  • the RBG size of the activated BWP is based on the number of RBs included in the activated BWP And N RBG is determined. in, Is a positive integer.
  • each RBG that activates BWP has the same size, which is when When it is not divisible by N RBG , the size of the first RBG or the last RBG included in the active BWP is The size of the other RBGs are In this method, by changing the RBG size of the activated BWP, the base station can indicate which of all RBGs in the activated BWP are allocated to the UE.
  • the bandwidth of the activated BWP indicated by the first DCI is greater than the bandwidth of the initial BWP, and the N RBG in the above method 0 method is equal to the number of RBGs included in the initial BWP At this time, N RBG RBGs are included in the activated BWP.
  • the RBG size of the activated BWP is based on the bandwidth of the activated BWP, that is, the number of RBs included in the activated BWP And N RBG is determined.
  • the size of the RBG that activates the BWP can be expressed as
  • N RB cannot be divisible by N RBG the size of the first RBG or the last RBG included in the active BWP is The size of the other RBGs are
  • the base station can indicate which of all RBGs in the activated BWP are allocated to the UE.
  • the frequency domain resource allocation domain in the first DCI includes Bits. in, Indicates the number of RBs included in the initial BWP.
  • the bandwidth of the activated BWP indicated by the first DCI is greater than the bandwidth of the initial BWP, and is added
  • the value of the frequency domain resource allocation field after one bit is a resource indication value (RIV), which is used to indicate the starting RB allocated for the PDSCH or PUSCH of the UE and the number of consecutively allocated RBs in the activated BWP . in, Indicates the number of RBs included in the activated BWP.
  • the value of the added bits can be all 0, or all 1, or other pre-configured values.
  • the base station sends the first DCI to the UE, and the frequency domain resource allocation field of the first DCI includes Bits.
  • the UE After the UE receives the first DCI, it can add it in the high or low position of the frequency domain resource allocation domain of the first DCI. Bits, will add the bits The value of bits is regarded as the RIV, and the initial RB allocated for the PDSCH or PUSCH of the UE and the number of consecutive allocated RBs are determined according to the RIV.
  • the bandwidth of the activated BWP indicated by the first DCI is smaller than the bandwidth of the initial BWP.
  • the value of the bits is RIV, which is used to indicate the starting RB allocated for the PDSCH or PUSCH of the UE and the number of consecutively allocated RBs in the activated BWP. in, Is the number of RBs included in the activated BWP.
  • the frequency domain resource allocation domain of the first DCI includes redundant Bits. These redundant bits may be located at the highest bit of the frequency domain resource allocation domain and be filled with 0 or 1. When the UE determines the allocated resources according to the received frequency domain resource allocation domain, these reserved bits may not be considered, for example, they are truncated or discarded.
  • the bandwidth of the activated BWP indicated by the first DCI is larger or smaller than the bandwidth of the initial BWP.
  • the UE After the UE receives the DCI, it can determine the resources allocated for the PDSCH or PUSCH of the UE in the activated BWP according to the scaling factor and the frequency resources indicated by the RIV.
  • RIV is the frequency domain resource allocation domain of the first DCI The value indicated by bits.
  • the scaling factor can be expressed as The UE may determine the starting RB position of the allocation according to the RIV, and the starting RB position is the starting RB position allocated for the PDSCH or PUSCH of the UE in the activated BWP.
  • the UE obtains the number of RBs allocated to the PDSCH or PUSCH of the UE in the activated BWP according to the product of the number of RBs indicated by the RIV and the scale factor. Wherein, when the product is not an integer, it can be rounded up or down.
  • the third way way 0 or way 1.
  • the frequency domain resource allocation domain in the first DCI includes Bits.
  • the highest or lowest bit in the frequency domain resource allocation domain is used to indicate whether the resource allocation mode is mode 0 or mode 1.
  • the resource allocation mode is mode 0
  • the N RBG bits in the resource allocation field are used to indicate the resources allocated for the PDSCH or PUSCH of the UE in the active BWP indicated by the first DCI according to the above mode 0;
  • the mode is mode 1
  • the resource allocation field The bits are used to indicate the resources allocated for the PDSCH or PUSCH of the UE in the activated BWP indicated by the first DCI according to the above method 1.
  • the number of bits used to indicate the allocated resources is predefined.
  • the predefined number of bits is determined according to the minimum bandwidth, maximum bandwidth, or a specific bandwidth of CORESET 0 supported by the system.
  • the number of bits used to indicate the allocated resource in the predefined first DCI is determined according to the minimum bandwidth of CORESET 0.
  • the bandwidth of CORESET 0 supported by the system is 5MHz, 10MHz, and 20MHz, respectively. If you use the above method 1 to calculate The size of the frequency domain resource allocation domain.
  • the size of the frequency domain resource allocation domain corresponding to these three bandwidths is 9 bits, 11 bits, and 13 bits, respectively, and the number of bits used to indicate the allocated resources in the first DCI can always be 9 bits.
  • the bandwidth of CORESET 0 is actually 10MHz or 20MHz, according to the bandwidth of CORESET 0, it can be obtained that the size of the frequency domain resource allocation domain in the first DCI is 11 bits or 13 bits, and there are only 9 bits of these 11 bits or 13 bits.
  • the resource allocation field in the first DCI can be redundantly provided with 2 (11-9) bits or 4 (13-9) bits.
  • the redundant bits may be regarded as reserved bits
  • the 9 bits may be regarded as bits in the frequency domain resource allocation domain.
  • the redundant 2 bits or 4 bits can realize more data transmission functions, for example, for PUCCH resource indication, and for example, for hybrid automatic repeat request (HARQ timing indication.
  • HARQ timing indication for example, the following table 5 shows When the bandwidth of CORESET 0 is 24 RB, 48 RB, and 96 RB, respectively, the length of the information field (the number of bits included) in the first DCI.
  • the 9 bits are used to activate the BWP.
  • the method for resource allocation in BWP is similar to any of the above three methods, and the initial BWP can be replaced with COREST 0, and the bandwidth of CORESET 0 is 24 RB.
  • the initial BWP bandwidth of the terminal device may be the same as or different from the initial BWP of the non-REDCAP terminal.
  • the initial CORESET 0 of the terminal device may be the same as or different from the initial CORESET 0 of the non-REDCAP terminal.
  • the size of the frequency domain resource allocation domain of the first DCI can be aligned with the size of the frequency domain resource allocation domain of the second DCI.
  • the second DCI may schedule a physical data channel that carries common information, such as PDSCH.
  • the PDSCH is transmitted in the initial BWP or CORESET 0.
  • the frequency domain resource allocation field in the second DCI may indicate the frequency domain resources allocated for the PDSCH in the initial BWP or CORESET 0.
  • the resource allocation method can be similar to method 0 or method 1.
  • the size of the frequency domain resource allocation field is determined according to the bandwidth of the initial BWP or CORESET 0, indicating the resources allocated for the PDSCH in the initial BWP or CORESET 0.
  • the frequency domain resource allocation domain in the first DCI includes Bits.
  • Bits and the initial BWP There is a one-to-one correspondence between RBGs. For that When the value of this bit is the first value (such as 1), the resource allocated to the physical data channel includes the RBG corresponding to the one bit; when the value of this bit is the second value (such as 0) or when it is not the first value, the resource allocated to the physical data channel does not include the RBG corresponding to the one bit. in, Is the number of RBGs included in the initial BWP.
  • the frequency domain resource allocation domain in the second DCI includes Bits. Should The value of the bits is RIV, which is used to indicate the initial RB allocated for the physical data channel in the initial BWP and the number of consecutively allocated RBs. in, Indicates the number of RBs included in the initial BWP.
  • the frequency domain resource allocation field in the second DCI includes Bits.
  • the highest or lowest bit in the frequency domain resource allocation domain is used to indicate whether the resource allocation mode is mode 0 or mode 1.
  • the resource allocation field in the The bits are used to indicate the resources allocated for the physical data channel in the initial BWP according to the above mode 0; when the resource allocation mode is mode 1, the resources in the resource allocation field The bits are used to indicate the resources allocated for the physical data channel in the initial BWP according to the above method 1.
  • the size of the frequency domain resource allocation domain of the first DCI according to the bandwidth of the initial BWP or CORESET 0, the size of the frequency domain resource allocation domain of the first DCI and the frequency domain resource allocation of the second DCI can be realized
  • the size of the field is aligned.
  • the methods provided in the embodiments of the present application are introduced from the perspective of network equipment (such as base station), terminal equipment (such as UE), and the interaction between network equipment and terminal equipment.
  • the network device and the terminal may include a hardware structure and/or software module, and the above functions are implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether a certain function among the above-mentioned functions is executed by a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraint conditions of the technical solution.
  • FIG. 3 is a diagram showing an example of the structure of an apparatus 300 provided by an embodiment of the application.
  • the apparatus 300 is used to implement the function of the terminal device in the foregoing method.
  • the device may be a terminal device or another device capable of realizing the function of the terminal device.
  • the other device can be installed in the terminal device or can be matched and used with the terminal device.
  • the device 300 includes a receiving module 301 for receiving signals or information. For example, it is used to receive one or more of the following signals from the network device: the first DCI, the second DCI, and the PDSCH.
  • the device 300 includes a sending module 302 for sending signals or information. For example, it is used to send PUSCH to a network device.
  • the device 300 includes a processing module 303 for processing the received signal or information, for example, for decoding the signal or information received by the receiving module 301.
  • the processing module 303 may also generate a signal or information to be sent, for example, for generating a signal or information to be sent through the sending module 302.
  • the division of modules in the embodiments of the present application is illustrative, and is a logical function division, and there may be other division methods in actual implementation.
  • the receiving module 301 and the sending module 302 can also be integrated as a transceiver module or a communication module.
  • the functional modules in the various embodiments of the present application may be integrated into one module, or may exist alone physically, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.
  • the apparatus 300 is used to implement the function of the network device in the foregoing method.
  • the device may be a network device or other devices that can realize the functions of the network device.
  • the other device can be installed in the network equipment or can be matched and used with the network equipment.
  • the device 300 includes a receiving module 301 for receiving signals or information. For example, it is used to receive PUSCH from a terminal device.
  • the device 300 includes a sending module 302 for sending signals or information. For example, it is used to send one or more of the following signals to the terminal device: the first DCI, the second DCI, and the PDSCH.
  • the device 300 includes a processing module 303 for processing the received signal or information, for example, for decoding the signal or information received by the receiving module 301.
  • the processing module 303 may also generate a signal or information to be sent, for example, for generating a signal or information to be sent through the sending module 302.
  • FIG. 4 shows an apparatus 400 provided by an embodiment of the application.
  • the apparatus 400 is used to implement the function of the terminal device in the foregoing method, and the apparatus may be a terminal device, or may be another apparatus capable of realizing the function of the terminal device.
  • the other device can be installed in the terminal device or can be matched and used with the terminal device.
  • the device 400 may be a chip system.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the apparatus 400 includes at least one processor 420, configured to implement the function of the terminal device in the method provided in the embodiment of the present application.
  • the processor 420 may generate and send signals such as PUSCH, and may be used to receive and process one or more of the following signals: first DCI, second DCI, and PDSCH.
  • signals such as PUSCH
  • first DCI second DCI
  • PDSCH PDSCH
  • the device 400 may also include at least one memory 430 for storing program instructions and/or data.
  • the memory 430 and the processor 420 are coupled.
  • the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 420 may cooperate with the memory 430.
  • the processor 420 may execute program instructions stored in the memory 430. At least one of the at least one memory may be included in the processor 420.
  • the apparatus 400 may further include a communication interface 410 for communicating with other devices through a transmission medium, so that the apparatus used in the apparatus 400 can communicate with other devices.
  • the other device may be a network device.
  • the processor 420 uses the communication interface 410 to send and receive signals, and is used to implement the functions of the terminal device described in the foregoing method embodiments.
  • the apparatus 400 is used to implement the function of the network device in the foregoing method.
  • the apparatus may be a network device, or may be another apparatus capable of implementing the function of the network device.
  • the other device can be installed in the network equipment or can be matched and used with the network equipment.
  • the device 400 may be a chip system.
  • the apparatus 400 includes at least one processor 420, configured to implement the function of the network device in the method provided in the embodiment of the present application.
  • the processor 420 may receive and process signals such as PUSCH, and may be used to generate and transmit one or more of the following signals: first DCI, second DCI, and PDSCH.
  • PUSCH PUSCH
  • the device 400 may also include at least one memory 430 for storing program instructions and/or data.
  • the memory 430 and the processor 420 are coupled.
  • the processor 420 may cooperate with the memory 430.
  • the processor 420 may execute program instructions stored in the memory 430. At least one of the at least one memory may be included in the processor 420.
  • the apparatus 400 may further include a communication interface 410 for communicating with other devices through a transmission medium, so that the apparatus used in the apparatus 400 can communicate with other devices.
  • the other device may be a terminal device.
  • the processor 420 uses the communication interface 410 to send and receive signals, and is used to implement the functions of the network device described in the foregoing method embodiments.
  • the specific connection medium between the above-mentioned communication interface 410, the processor 420, and the memory 430 is not limited in the embodiment of the present application.
  • the memory 430, the processor 420, and the transceiver 410 are connected by a bus 440.
  • the bus is represented by a thick line in FIG. , Is not limited.
  • the bus can be divided into an address bus, a data bus, a control bus, and so on. For ease of representation, only one thick line is used in FIG. 4 to represent it, but it does not mean that there is only one bus or one type of bus.
  • the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which may implement or Perform the methods, steps, and logic block diagrams disclosed in the embodiments of the present application.
  • the general-purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), for example Random-access memory (random-access memory, RAM).
  • the memory is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited to this.
  • the memory in the embodiments of the present application may also be a circuit or any other device capable of realizing a storage function for storing program instructions and/or data.
  • the technical solutions provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a terminal device, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium.
  • the embodiments can be mutually cited.
  • the methods and/or terms between the method embodiments can be mutually cited, such as the functions and/or functions between the device embodiments.
  • Or terms may refer to each other, for example, functions and/or terms between the device embodiment and the method embodiment may refer to each other.

Landscapes

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

Abstract

本申请实施例提供了一种控制信息的传输方法，可以使不同下行控制信息DCI的大小对齐，从而减小DCI大小的种类，降低终端检测DCI时的功耗。该方法包括：在第一搜索空间中，终端设备检测第一下行控制信息DCI；其中，第一DCI用于指示终端设备的激活带宽部分BWP，第一DCI的大小和第二DCI的大小是对齐的，第二DCI是在第一公共搜索空间中能够被网络设备发送给终端设备的DCI，第二DCI用于调度系统消息、寻呼消息、或随机接入响应RAR。

Description

控制信息传输方法
本申请要求于2020年04月10日提交中国国家知识产权局、申请号为202010280859.8、申请名称为“控制信息传输方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术领域，尤其涉及控制信息的传输方法、装置和系统。
背景技术
随着通信技术的发展和用户需求的提升，通信场景中的终端设备逐渐呈现大数量、多形态等特征。例如，工业自动化场景中，厂房中存在大量的监控设备、机器、传感器等；家庭和生活场景中，存在大量手机、平板、穿戴式设备、智能家电、或车载终端设备等。
发明内容
本申请实施例提供了控制信息传输方法，旨在降低终端设备检测控制信息时的功耗。
第一方面，提供了一种控制信息的传输方法，包括：在第一搜索空间中，检测第一下行控制信息DCI；其中，所述第一DCI用于指示终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和所述网络设备传输物理数据信道，所述第一DCI的大小和第二DCI的大小是对齐的，所述第二DCI是在第一公共搜索空间中能够被传输的DCI，所述第二DCI用于调度公共消息。可选地，公共消息可以是系统消息、寻呼消息、或随机接入响应RAR。可选地，所述第一搜索空间是第一特定搜索空间。
该方法还可以描述为：在终端设备的第一公共搜索空间中，从网络设备检测第二下行控制信息DCI；其中，所述第二DCI用于调度公共消息，所述第二DCI的大小和第一DCI的大小是对齐的，所述第一DCI是在第一搜索空间中能够被传输的DCI，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和所述网络设备传输物理数据信道。可选地，公共消息可以是系统消息、寻呼消息、或随机接入响应RAR。可选地，所述第一搜索空间是第一特定搜索空间。
通过该方法，终端设备的第一搜索空间中传输的DCI(第一DCI)大小和终端设备的第一公共搜索空间中传输的DCI(第二DCI)大小相同，可以减少终端设备检测的DCI大小的种类，从而可以减小终端设备检测PDCCH的次数。此外，在第一DCI中指示终端设备的激活BWP，可以实现BWP切换功能，使得终端设备传输信息时，可以充分利用频域分集增益。示例性地，该方法用于带宽较窄的终端设备(例如 REDCAP终端)时，通过BWP切换，可以在较大带宽范围中为终端设备分配频域资源，从而可以利用频域分集增益，提供数据传输的可靠性。
在一种可能的设计中，所述第一特定搜索空间包括于所述终端设备的多个特定搜索空间中，所述多个特定搜索空间中的一个特定搜索空间对应N1种DCI格式，所述多个特定搜索空间共对应N2种DCI格式，所述N2种DCI格式的DCI在相应的特定搜索空间中传输时大小是对齐的，其中，N1为大于等于1的整数，N2为大于等于N1的整数。
通过该方法，终端设备的多个特定搜索空间中传输的DCI大小相同，可以减少终端设备检测的DCI大小的种类，从而可以减小终端设备检测PDCCH的次数。
在一种可能的设计中，所述第一DCI的大小和第二DCI的大小是对齐的，包括：
所述第一DCI的比特流的比特数等于所述第二DCI的比特流的比特数；
其中，所述第一DCI的比特流为所述第一DCI的信息比特流，或者所述第一DCI的比特流为对所述第一DCI的信息比特流进行填充或截短后得到的比特流，所述第二DCI的比特流为所述第二DCI的信息比特流；或，
所述第一DCI的比特流为对所述第一DCI的信息比特流进行第一操作后得到的比特流，所述第二DCI的比特流为对所述第二DCI的信息比特流进行第一操作后得到的比特流，其中，所述第一操作包括以下操作中的一种或多种：添加循环冗余校验CRC位、信道编码、和加扰；
或，
所述第一DCI对应的调制符号的个数等于所述第二DCI对应的调制符号的个数。
通过该方法，可以实现第一DCI大小和第二DCI大小的对齐。
在一种可能的设计中，所述第一DCI是被截短的或者所述第一DCI中包括填充位。可选地，所述第一DCI中的以下信息域中的一种或多种被截断：频域资源分配域、和第二传输块的传输参数。可选地，当频域资源分配域被截断时，频域资源分配域的高位的一个或多个比特被截断。可选地，当第二传输块的传输参数被截断时，第一DCI中包括第一传输块的传输参数，第二传输块的传输参数和第一传输块的传输参数相同。通过该方法，可以实现第一DCI大小和第二DCI大小的对齐。
在一种可能的设计中，所述第一DCI中包括频域资源分配域，用于指示在所述激活BWP中为所述物理数据信道分配的频域资源；其中，所述频域资源分配域的大小是根据初始BWP的带宽确定的，所述初始BWP用于所述终端设备从所述网络设备接收同步信号块SSB；或者，所述频域资源分配域的大小是根据控制资源集合CORESET 0的带宽确定的，所述CORESET 0用于所述终端设备从所述网络设备接收由系统信息无线网络临时标识SI-RNTI加扰的DCI。
通过该方法，可以使得第一DCI的频域资源分配域的大小和第二DCI的频域资源分配域的大小对齐，从而可以更好地实现第一DCI的大小和第二DCI的大小对齐。
在一种可能的设计中，所述第一DCI还能够在第二公共搜索空间中被传输。该 方法还可以描述为，所述第一搜索空间是第二公共搜索空间。通过该方法，当第二公共搜索空间有多余的资源没有被使用时，网络设备可以利用该资源向终端设备传输第一DCI，从而可以提高资源利用率。第一DCI在第二公共搜索空间中传输时，第一DCI的RNTI是由UE特定RNTI加扰的。此外，第二公共搜索空间中还可以传输由公共RNTI加扰的公共DCI。终端设备在第二公共搜索空间中接收DCI时，通过解扰DCI，可以获得用于加扰该DCI的RNTI，从而可以得到该DCI是UE特定的DCI还是公共DCI。第二公共搜素空间和第一公共搜素空间可以相同，也可以不同。
在一种可能的设计中，所述物理数据信道包括物理下行共享信道PDSCH或物理上行共享信道PUSCH，所述第一DCI还用于指示所述第一DCI是用于调度所述PDSCH还是用于调度所述PUSCH。通过该方法，可以利用一种大小的DCI调度多种不同的信道，从而实现更多的调度功能，使得基站和UE可以低功耗地传输多种信道。
在一种可能的设计中，所述第一DCI中包括DCI格式的标识域，当所述标识域为第一值时，所述第一DCI用于调度PUSCH，当所述标识域为第二值时，所述第一DCI用于调度PDSCH。通过该方法，可以简易地实现利用一种大小的DCI调度多种不同的信道。
在一种可能的设计中，所述第一DCI被第一RNTI加扰时，所述第一DCI用于调度PUSCH，当第一DCI被第二RNTI加扰时，该第一DCI用于调度PDSCH。通过该方法，可以隐式地实现利用一种大小的DCI调度多种不同的信道，从而节省第一DCI的开销。
在一种可能的设计中，所述第一DCI的CRC位是利用所述终端设备特定的无线网络临时标识RNTI被加扰的。可选地，所述终端设备特定的RNTI为以下RNTI中的任意一种：C-RNTI、SPS-RNTI、MCS-C-RNTI、SP-CSI-RNTI、和CS-RNTI。通过该方法，可以隐式地指示第一DCI的类型为终端设备特定的，使得终端设备通过解扰DCI便可以确定该DCI是否为该终端特定的。
在一种可能的设计中，所述第二DCI的CRC位是利用公共RNTI被加扰的。可选地，所述公共RNTI为以下RNTI中的任意一种：SI-RNTI、P-RNTI、和RA-RNTI。通过该方法，可以隐式地指示第二DCI的类型为公共，使得终端设备通过解扰DCI便可以确定该DCI的类型。可选地，终端设备可以根据加扰第二DCI的RNTI确定该第二DCI所调度的PDSCH上承载的信息类型，从而可以按需接收。例如，由SI-RNTI加扰的第二DCI所调度的PDSCH上承载系统消息，由P-RNTI加扰的第二DCI所调度的PDSCH上承载寻呼消息，由RA-RNTII加扰的第二DCI所调度的PDSCH上承载RAR。
在一种可能的设计中，所述方法还包括：向网络设备发送指示信息，用于指示终端设备的类型或能力信息。例如，指示所述终端设备的类型为REDCAP终端。可选地，终端设备的类型是REDCAP终端或是高能力终端。可选地，终端设备的能力信息包括以下信息中的一种或多种：支持的最大带宽、支持的天线数、支持的最大发射功率、是否支持载波聚合、支持的载波数、对应的协议版本、双工能力、数据处理能力、和峰值速率。通过该方法，当对REDCAP终端采取上述DCI对齐方法，而不需 要对高能力终端采取上述DCI对齐方法时，可以便于网络设备获知终端设备的类型，从而执行相应的DCI传输方法。
第二方面，提供了一种控制信息的传输方法，包括：在终端设备的第一特定搜索空间中，检测第一下行控制信息DCI，其中，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和网络设备传输物理数据信道；其中，所述第一特定搜索空间包括于所述终端设备的多个特定搜索空间中，所述多个特定搜索空间中的一个特定搜索空间对应N1种DCI格式，所述多个特定搜索空间共对应N2种DCI格式，所述N2种DCI格式的DCI在相应的特定搜索空间中传输时大小是对齐的，其中，N1为大于等于1的整数，N2为大于等于N1的整数。
通过该方法，终端设备的多个特定搜索空间中传输的DCI大小相同，即配置终端设备在该多个特定搜索空间中检测一种DCI大小，即为终端设备的多个特定搜索空间配置一种DCI大小，可以减少终端设备检测的DCI大小的种类，从而可以减小终端设备检测PDCCH的次数。此外，在第一DCI中指示终端设备的激活BWP，可以实现BWP切换功能，使得终端设备传输信息时，可以充分利用频域分集增益。示例性地，该方法用于带宽较窄的终端设备(例如REDCAP终端)时，通过BWP切换，可以在较大带宽范围中为终端设备分配频域资源，从而可以利用频域分集增益，提供数据传输的可靠性。
可选地，所述N2种DCI格式的DCI在相应的特定搜索空间中传输时大小是对齐的，包括：所述N2种DCI格式的DCI在相应的特定搜索空间中传输时对齐至第一方面描述的第二DCI的大小，或者对齐至另外一种大小。该另外一种大小可以是预定义的值，也可以是该N2种DCI格式中一种DCI格式对应的DCI大小。例如，该DCI大小是该N2种DCI格式对应的DCI大小中最小的DCI大小，或者是该N2种DCI格式对应的DCI大小中最大的DCI大小。通过该方法，可以实现为终端设备的多个特定搜索空间配置一种DCI大小。
在一种可能的设计中，所述物理数据信道包括物理下行共享信道PDSCH或物理上行共享信道PUSCH，所述第一DCI还用于指示所述第一DCI是用于调度所述PDSCH还是用于调度所述PUSCH。通过该方法，可以利用一种大小的DCI调度多种不同的信道，从而实现更多的调度功能，使得基站和UE可以低功耗地传输多种信道。
可选地，第一DCI指示用于调度PDSCH还是用于调度PUSCH的方法可以参见第一方面，此处不再赘述。
在一种可能的设计中，所述第一DCI的CRC位是利用所述终端设备特定的无线网络临时标识RNTI被加扰的。关于终端设备特定RNTI的介绍可以参见第一方面，此处不再赘述。
在一种可能的设计中，所述第一DCI还能够在公共搜索空间中被传输。关于该方法的介绍可参考第一方面，此处不再赘述。
第三方面，提供了一种控制信息的传输方法，包括：在第一搜索空间中，向终端设备发送第一下行控制信息DCI；
其中，所述第一DCI用于指示终端设备的激活带宽部分BWP，所述激活BWP 用于所述终端设备和网络设备传输物理数据信道，所述第一DCI的大小和第二DCI的大小是对齐的，所述第二DCI是在第一公共搜索空间中能够被传输的DCI，所述第二DCI用于调度系统消息、寻呼消息、或随机接入响应RAR。
该方法还可以描述为：在终端设备的第一公共搜索空间中，向所述终端设备发送第二下行控制信息DCI；其中，所述第二DCI用于调度公共消息，所述第二DCI的大小和第一DCI的大小是对齐的，所述第一DCI是在第一搜索空间中能够被传输的DCI，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和网络设备传输物理数据信道。可选地，公共消息可以是系统消息、寻呼消息、或随机接入响应RAR。
关于第一搜索空间、第一DCI和第二DCI等的介绍可以参考第一方面，此处不再赘述。
第四方面，提供了一种控制信息的传输方法，包括：在终端设备的第一特定搜索空间中，向终端设备发送第一下行控制信息DCI，其中，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和网络设备传输物理数据信道；其中，所述第一特定搜索空间包括于所述终端设备的多个特定搜索空间中，所述多个特定搜索空间中的一个特定搜索空间对应N1种DCI格式，所述多个特定搜索空间共对应N2种DCI格式，所述N2种DCI格式的DCI在相应的特定搜索空间中传输时大小是对齐的，其中，N1为大于等于1的整数，N2为大于等于N1的整数。
关于所述第一DCI和对齐方法等的介绍可以参考第二方面，此处不再赘述。
第五方面，提供一种装置，该装置可以是终端设备，也可以是能够实现第一方面或第二方面描述的方法的其它装置。该其它装置能够安装在终端设备中，或能够和终端设备匹配使用。一种设计中，该装置可以包括执行第一方面或第二方面中所描述的方法/操作/步骤/动作所一一对应的模块，该模块可以是硬件电路，也可是软件，也可以是硬件电路结合软件实现。一种设计中，该装置可以包括处理模块和通信模块。
一种可能的设计中，通信模块用于在第一搜索空间中，检测第一下行控制信息DCI；其中，所述第一DCI用于指示终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和所述网络设备传输物理数据信道，所述第一DCI的大小和第二DCI的大小是对齐的，所述第二DCI是在第一公共搜索空间中能够被传输的DCI，所述第二DCI用于调度系统消息、寻呼消息、或随机接入响应RAR。通信模块用于处理(解调和译码等)所接收到的第一DCI。
关于所述第一搜索空间、第一DCI和第二DCI等的介绍可以参考第一方面，此处不再赘述。
一种可能的设计中，通信模块用于在终端设备的第一特定搜索空间中，检测第一下行控制信息DCI，其中，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和所述网络设备传输物理数据信道；其中，所述第一特定搜索空间包括于所述终端设备的多个特定搜索空间中，所述多个特定搜索空间中的一个特定搜索空间对应N1种DCI格式，所述多个特定搜索空间共对应N2种DCI格式，所述N2种DCI格式的DCI在相应的特定搜索空间中传输时大小是 对齐的，其中，N1为大于等于1的整数，N2为大于等于N1的整数。通信模块用于处理(解调和译码等)所接收到的第一DCI。
关于所述第一DCI和对齐方法等的介绍可以参考第二方面，此处不再赘述。
第六方面，提供一种装置，该装置可以是网络设备，也可以是能够实现第三方面或第四方面描述的方法的其它装置。该其它装置能够安装在网络设备中，或能够和网络设备匹配使用。一种设计中，该装置可以包括执行第三方面或第四方面中所描述的方法/操作/步骤/动作所一一对应的模块，该模块可以是硬件电路，也可是软件，也可以是硬件电路结合软件实现。一种设计中，该装置可以包括处理模块和通信模块。
一种可能的设计中，通信模块用于在第一搜索空间中，向终端设备发送第一下行控制信息DCI；其中，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和网络设备传输物理数据信道，所述第一DCI的大小和第二DCI的大小是对齐的，所述第二DCI是在第一公共搜索空间中能够被传输的DCI，所述第二DCI用于调度系统消息、寻呼消息、或随机接入响应RAR。处理模块用于生成第一DCI。
关于所述第一DCI和第二DCI等的介绍可以参考第一方面，此处不再赘述。
一种可能的设计中，通信模块用于在终端设备的第一特定搜索空间中，向终端设备发送第一下行控制信息DCI，其中，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和网络设备传输物理数据信道；其中，所述第一特定搜索空间包括于所述终端设备的多个特定搜索空间中，所述多个特定搜索空间中的一个特定搜索空间对应N1种DCI格式，所述多个特定搜索空间共对应N2种DCI格式，所述N2种DCI格式的DCI在相应的特定搜索空间中传输时大小是对齐的，其中，N1为大于等于1的整数，N2为大于等于N1的整数。处理模块用于生成第一DCI。
关于所述第一DCI和对齐方法等的介绍可以参考第二方面，此处不再赘述。
第七方面，本申请实施例提供一种装置，所述装置包括处理器，用于实现上述第一方面或第二方面描述的方法。所述装置还可以包括存储器，用于存储指令。所述存储器与所述处理器耦合，所述处理器执行所述存储器中存储的指令时，可以实现上述第一方面或第二方面描述的方法。所述装置还可以包括通信接口，所述通信接口用于该装置与其它设备进行通信，示例性的，通信接口可以是收发器、电路、总线、模块、管脚或其它类型的通信接口，其它设备可以为网络设备。
在一种可能的设计中，该装置包括：
存储器，用于存储程序指令；
处理器，用于利用通信接口，在第一搜索空间中，检测第一下行控制信息DCI；其中，所述第一DCI用于指示终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和所述网络设备传输物理数据信道，所述第一DCI的大小和第二DCI的大小是对齐的，所述第二DCI是在第一公共搜索空间中能够被传输的DCI，所述第二DCI用于调度系统消息、寻呼消息、或随机接入响应RAR。处理器用于处理(解调和译码等)所接收到的第一DCI。
关于所述第一搜索空间、第一DCI和第二DCI等的介绍可以参考第一方面，此处 不再赘述。
在一种可能的设计中，该装置包括：
存储器，用于存储程序指令；
处理器，用于利用通信接口，在终端设备的第一特定搜索空间中，检测第一下行控制信息DCI，其中，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和所述网络设备传输物理数据信道；其中，所述第一特定搜索空间包括于所述终端设备的多个特定搜索空间中，所述多个特定搜索空间中的一个特定搜索空间对应N1种DCI格式，所述多个特定搜索空间共对应N2种DCI格式，所述N2种DCI格式的DCI在相应的特定搜索空间中传输时大小是对齐的，其中，N1为大于等于1的整数，N2为大于等于N1的整数。处理器用于处理(解调和译码等)所接收到的第一DCI。
关于所述第一DCI和对齐方法等的介绍可以参考第二方面，此处不再赘述。
第八方面，本申请实施例提供一种装置，所述装置包括处理器，用于实现上述第三方面或第四方面描述的方法。所述装置还可以包括存储器，用于存储指令。所述存储器与所述处理器耦合，所述处理器执行所述存储器中存储的指令时，可以实现上述第三方面或第四方面描述的方法。所述装置还可以包括通信接口，所述通信接口用于该装置与其它设备进行通信，示例性的，通信接口可以是收发器、电路、总线、模块、管脚或其它类型的通信接口，其它设备可以为终端设备。
在一种可能的设计中，该装置包括：
存储器，用于存储程序指令；
处理器，用于利用通信接口，在第一搜索空间中，向终端设备发送第一下行控制信息DCI；其中，所述第一DCI用于指示终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和网络设备传输物理数据信道，所述第一DCI的大小和第二DCI的大小是对齐的，所述第二DCI是在第一公共搜索空间中能够被传输的DCI，所述第二DCI用于调度系统消息、寻呼消息、或随机接入响应RAR。处理器用于生成第一DCI。
关于所述第一DCI和第二DCI等的介绍可以参考第一方面，此处不再赘述。
在一种可能的设计中，该装置包括：
存储器，用于存储程序指令；
处理器，用于利用通信接口，在终端设备的第一特定搜索空间中，向终端设备发送第一下行控制信息DCI，其中，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和网络设备传输物理数据信道；其中，所述第一特定搜索空间包括于所述终端设备的多个特定搜索空间中，所述多个特定搜索空间中的一个特定搜索空间对应N1种DCI格式，所述多个特定搜索空间共对应N2种DCI格式，所述N2种DCI格式的DCI在相应的特定搜索空间中传输时大小是对齐的，其中，N1为大于等于1的整数，N2为大于等于N1的整数。处理器用于生成第一DCI。
关于所述第一DCI和对齐方法等的介绍可以参考第二方面，此处不再赘述。
第九方面，本申请实施例提供一种通信系统，包括第五方面或第七方面的装置， 和第六方面或第八方面的装置。
第十方面，本申请实施例提供一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行第一方面、第二方面、第三方面或第四方面所述的方法。
第十一方面，本申请实施例提供一种计算机程序产品，包括指令，当其在计算机上运行时，使得计算机执行第一方面、第二方面、第三方面或第四方面所述的方法。
第十二方面，本申请实施例提供了一种芯片系统，该芯片系统包括处理器，还可以包括存储器，用于实现上述第一方面、第二方面、第三方面或第四方面所述的方法。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
附图说明
图1和图2所示为本申请实施例提供的方法流程示例图；
图3和图4所示为本申请实施例提供的装置结构示例图。
具体实施方式
本申请实施例提供的技术方案可以应用于各种通信系统，例如：长期演进(long term evolution,LTE)系统、第五代(5th generation,5G)移动通信系统、无线保真(wireless-fidelity，WiFi)系统、未来的通信系统、或者多种通信系统融合的系统等，本申请实施例不做限定。其中，5G还可以称为新无线(new radio,NR)。
本申请实施例提供的技术方案可以应用于各种通信场景，例如可以应用于以下通信场景中的一种或多种：增强移动宽带(enhanced mobile broadband，eMBB)通信、超可靠低时延通信(ultra-reliable low-latency communication，URLLC)、机器类型通信(machine type communication，MTC)、大规模机器类型通信(massive machine type communications，mMTC)、设备到设备(device-to-device，D2D)通信、车辆外联(vehicle to everything，V2X)通信、车辆到车辆(vehicle to vehicle，V2V)通信、和物联网(internet of things，IoT)等。可选地，mMTC可以包括以下通信中的一种或多种：工业无线传感器网络(industrial wireless sens or network，IWSN)的通信、视频监控(video surveillance)场景中的通信、和可穿戴设备的通信。
本申请实施例提供的技术方案可以应用于通信设备间的通信。通信设备间的通信可以包括：网络设备和终端设备间的通信、网络设备和网络设备间的通信、和/或终端设备和终端设备间的通信。在本申请实施例中，术语“通信”还可以描述为“传输”、“信息传输”、或“信号传输”等。传输可以包括发送和/或接收。以网络设备和终端设备间的通信为例描述本申请实施例的技术方案，本领域技术人员也可以将该技术方案用于进行其它调度实体和从属实体间的通信，例如宏基站和微基站之间的通信，例如第一终端设备和第二终端设备间的通信。其中，调度实体可以为从属实体分配空口资源。空口资源包括以下资源中的一种或多种：时域资源、频域资源、码资源和空间资源。在本申请实施例中，多种可以是两种、三种、四种或者更多种，本申请实施例不做限制。
在本申请实施例中，网络设备和终端设备间的通信包括：网络设备向终端设备发 送下行信号或信息，和/或终端设备向网络设备发送上行信号或信息。
在本申请实施例中，“/”可以表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B；“和/或”可以用于描述关联对象存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。其中A，B可以是单数或者复数。在本申请实施例中，可以采用“第一”、“第二”等字样对功能相同或相似的技术特征进行区分。该“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。在本申请实施例中，“示例性的”或者“例如”等词用于表示例子、例证或说明，被描述为“示例性的”或者“例如”的实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念，便于理解。
本申请实施例涉及到的终端设备还可以称为终端，可以是一种具有无线收发功能的设备。终端可以被部署在陆地上，包括室内、室外、手持、和/或车载；也可以被部署在水面上(如轮船等)；还可以被部署在空中(例如飞机、气球和卫星上等)。终端设备可以是用户设备(user equipment，UE)，UE包括具有无线通信功能的手持式设备、车载设备、可穿戴设备或计算设备。示例性地，UE可以是手机(mobile phone)、平板电脑或带无线收发功能的电脑。终端设备还可以是虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制中的无线终端、无人驾驶中的无线终端、远程医疗中的无线终端、智能电网中的无线终端、智慧城市(smart city)中的无线终端、和/或智慧家庭(smart home)中的无线终端等等。
本申请实施例涉及到的网络设备包括基站(base station，BS)，可以是一种部署在无线接入网中能够和终端设备进行无线通信的设备。基站可能有多种形式，比如宏基站、微基站、中继站或接入点等。本申请实施例涉及到的基站可以是5G系统中的基站或LTE系统中的基站。其中，5G系统中的基站还可以称为发送接收点(transmission reception point，TRP)或下一代节点B(generation Node B，gNB或gNodeB)。
在通信系统中，例如NR系统或者其它系统中，相对传统的终端设备，例如eMBB终端，可以引入一种轻型(light)终端设备。该轻型终端设备也可以称为能力降低(reduced capability，REDCAP)终端。其中，eMBB终端是能够传输eMBB业务的终端。相对REDCAP终端，该传统的终端设备可以是高能力终端或能力不受限的终端。本申请实施例中，该传统的终端设备可以被替换为未来引进的、相对REDCAP终端的高能力终端。示例性地，高能力终端和REDCAP终端的特征对比满足以下第一项至第九项中的至少一项。其中，至少一项可以是一项或多项，例如2项、3项或者更多项，本申请实施例不做限制。
第一项：高能力终端支持的最大带宽大于REDCAP终端支持的最大带宽。例如：高能力终端支持的最大带宽是100MHz(兆赫兹)或200MHz，REDCAP终端支持的最大带宽是20MHz、10MHz或者5MHz。
第二项：高能力终端的天线数多于REDCAP终端的天线数。其中，该天线数可 以是为终端设置的天线数，或是用于发送和/或接收的最大天线数。例如：高能力终端最高支持4天线收2天线发，REDCAP终端最高支持2天线收1天线发。或者，即使高能力终端的天线数等于NR REDCAP终端的天线数，但是在天线选择性传输上能力不同。例如高能力终端与低能力终端都支持2天线发送，但是高能力终端支持天线选择性传输，而低能力终端不支持天线选择性传输。以单天线端口数据传输为例，高能力终端可以实现单天线端口数据传输在2个发送天线上切换，该数据传输可以获得空间分集增益；而低能力终端的单天线端口数据传输只能在2个发送天线上同时发送，等价于1个发送天线的传输性能。
第三项：高能力终端支持的最大发射功率大于REDCAP终端支持的最大发射功率。例如：高能力终端支持的最大发射功率是23分贝毫瓦(decibel-milliwatt，dBm)或者26dBm，REDCAP终端支持的最大发射功率是4dBm至20dBm中的一个值。
第四项：高能力终端支持载波聚合(carrier aggregation，CA)，REDCAP终端不支持载波聚合。
第五项：高能力终端和REDCAP终端都支持载波聚合时，高能力终端支持的最大载波数大于REDCAP终端支持的最大载波数。例如，高能力终端最多支持32个载波或者5个载波的聚合，REDCAP终端最多支持2个载波的聚合。
第六项：高能力终端和REDCAP终端在不同的协议版本中被引入。例如，在NR协议中，高能力终端是在协议的版本(Release，R)15中引入的终端，REDCAP终端是在协议的R17中引入的终端。
第七项：高能力终端和REDCAP终端的双工能力不同。高能力终端的双工能力更强。例如高能力终端支持全双工频分双工(frequency division duplex，FDD)，即高能力终端在支持FDD时支持同时接收和发送，REDCAP终端支持半双工FDD，即REDCAP终端在支持FDD时不支持同时接收和发送。
第八项：高能力终端的数据处理能力比REDCAP终端的数据处理能力更强。高能力终端相同时间内可以处理的数据更多，或者高能力终端处理相同数据时处理时间更短。例如，记终端接收到来自网络设备的下行数据的时间为T1，终端处理该下行数据后，记终端向网络设备发送该下行数据的反馈的时间为T2，高能力终端的T2和T1之间的时延(时间差)小于REDCAP终端的T2和T1之间的时延。其中，下行数据的反馈可以是ACK或者NACK反馈。
第九项：高能力终端的数据传输的峰值速率大于REDCAP终端的数据传输的峰值速率。其中，数据传输包括上行数据传输(即终端向网络设备发送数据)和/或下行数据传输(即终端从网络设备接收数据)。
可选地，为了便于区分，在本申请实施例中，高能力终端还可以称为非REDCAP终端。
REDCAP终端可以应用于物联网、mMTC、或V2X等各种场景。一种可能的设计中，相对高能力终端，要求REDCAP终端的功耗更低。REDCAP终端的功耗越低，其电池使用寿命越长，用户体验越好。此外，有些REDCAP终端的部署环境(例如地下管道、郊外等)较为特殊，在该环境中不便于对REDCAP终端的供电系 统进行调整。这种情况下，降低REDCAP终端的功耗，可以简化此类终端的后期维护，提高用户体验。因此，如何降低REDCAP终端的功耗是一个值得研究的问题。
可选地，在本申请实施例中，终端设备可以向网络设备发送指示信息，指示终端设备的类型或者能力信息。可选地，可以指示终端的类型是REDCAP终端还是高能力终端。可选地，可以指示终端的以下能力信息中的一种或多种：支持的最大带宽、支持的天线数、支持的最大发射功率、是否支持载波聚合、支持的载波数、对应的协议版本、双工能力、数据处理能力、和峰值速率。基于该设计，例如，本申请实施例提供的方法可以应用于REDCAP终端，而不应用于其它高能力终端时，通过该指示信息，网络设备可以获得终端设备的类型，从而可以执行正确的操作，使得网络设备和终端设备可以正常交互信息。
可选地，本申请实施例提供的方法还可以应用于其他类型终端，例如高能力终端(如eMBB终端，或支持URLLC业务的URLLC终端)，用于降低终端功耗，进一步提高用户体验。为了简化描述，本申请实施例可以以REDCAP终端为例进行描述。
本申请实施例中，用于实现终端设备的功能的装置可以是终端设备；也可以是能够支持终端设备实现该功能的装置，例如芯片系统。该装置可以被安装在终端设备中或者和终端设备匹配使用。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。本申请实施例提供的技术方案中，以用于实现终端设备的功能的装置是终端设备，以终端设备是UE为例，描述本申请实施例提供的技术方案。
本申请实施例中，用于实现网络设备的功能的装置可以是网络设备；也可以是能够支持网络设备实现该功能的装置，例如芯片系统。该装置可以被安装在网络设备中或者和网络设备匹配使用。在本申请实施例提供的技术方案中，以用于实现网络设备的功能的装置是网络设备，以网络设备是基站为例，描述本申请实施例提供的技术方案。
通信系统中，UE可以接入基站，并和基站进行通信。示例性地，一个基站可以管理一个或多个(例如2个、3个或6个等)小区，UE可以在该一个或多个小区中的至少一个小区中接入基站，并在该UE所接入的小区中和基站进行通信。在本申请实施例中，至少一个可以是1个、2个、3个或者更多个，本申请实施例不做限制。
基站和UE进行通信时，基站可以通过下行控制信道向UE发送下行控制信息(downlink control information，DCI)，用于调度物理数据信道。例如，该DCI可以用于调度物理下行数据信道，基站通过该物理下行数据信道向UE发送下行数据。或者，该DCI可以用于调度物理上行数据信道，UE通过该物理上行数据信道向基站发送上行数据。
在本申请实施例中，下行控制信道可以是物理下行控制信道(physical downlink control channel，PDCCH)、增强PDCCH(enhanced PDCCH)、MTC PDCCH(MPDCCH)、窄带PDCCH(narrowband PDCCH,NPDCCH)或其它类型的下行控制信道，用于携带DCI。本申请实施例中不限制该下行控制信道的名称或类型。为了简化描述，本申请实施例中以下行控制信道是PDCCH为例进行描述。
当物理数据信道是由DCI调度时，为了进行数据传输，UE需要从基站接收 DCI。UE接收DCI时，可能需要多次盲检测DCI。盲检测的次数越多，UE的功耗越大。为了降低UE的功耗，可以减少UE盲检测DCI的次数。为了降低UE盲检测DCI的次数，可以减少DCI大小的种类。基于此，本申请实施例提供了以下几种设计方案。
第一种设计方案：第一公共搜索空间中传输的公共DCI的大小和第一搜索空间中传输的第一DCI的大小是拉齐的。其中，第一DCI用于指示UE的激活带宽部分(bandwidth part，BWP)。
一种可能的实现中，如图1所示，在第一搜索空间中，基站向UE发送第一DCI。其中，第一DCI用于指示UE的激活BWP。第一DCI的大小和第二DCI的大小相同，第二DCI是在第一公共搜索空间中能够被传输的DCI，所述第二DCI用于调度公共消息。第一DCI还可以用于调度物理数据信道，例如物理下行数据信道或物理上行数据信道。第一DCI所调度的物理数据信道在UE的激活BWP上传输。可选地，第一搜索空间是UE的第一特定搜索空间。可选地，基站可以在第一公共搜索空间中向UE发送第二DCI，即第一搜索空间还可以是第一公共搜索空间。在本申请一些实施例中，为了简化描述，可以以第一搜索空间是第一特定搜索空间为例进行描述。
在申请实施例中，物理下行数据信道可以是物理下行共享信道(physical downlink shared channel，PDSCH)或其它下行数据信道，用于携带基站发送给UE的下行数据，本申请实施例中不限制该物理下行数据信道的名称或类型。为了简化描述，本申请实施例中以该物理下行数据信道是PDSCH为例进行描述。用于调度PDSCH的DCI携带在PDCCH上，由基站发送给UE。DCI用于调度PDSCH时，DCI可以指示PDSCH的传输参数，该传输参数用于UE接收PDSCH。该传输参数可以包括下文DCI格式1_0和/或DCI格式1_1中包括的传输参数中的一种或多种。
在申请实施例中，物理上行数据信道可以是物理上行共享信道(physical uplink shared channel，PUSCH)或其它上行数据信道，用于携带UE发送给基站的上行数据，本申请实施例中不限制该物理上行数据信道的名称或类型。为了简化描述，本申请实施例中以该物理上行数据信道是PUSCH为例进行描述。用于调度PUSCH的DCI携带在PDCCH上，由基站发送给UE。DCI用于调度PUSCH时，DCI可以指示PUSCH的传输参数，该传输参数用于UE发送PUSCH。该传输参数可以包括下文DCI格式0_0和/或DCI格式0_1中包括的传输参数中的一种或多种。
在本申请实施例中，针对DCI所调度的传输方向，可以设置两类DCI。
示例性地，调度PUSCH的DCI可以称为第一类DCI，调度PDSCH的DCI可以称为为第二类DCI。其中，第一类DCI的格式可以包括下文介绍的DCI格式0_0、DCI格式0_1或其它格式的第一类DCI，第二类DCI的格式可以包括下文介绍的DCI格式1_0、DCI格式1_1或其它格式的第二类DCI。其中，DCI格式0_0还可以简称为DCI 0_0，DCI格式0_1还可以简称为DCI 0_1，DCI格式1_0还可以简称为DCI 1_0，DCI格式1_1还可以简称为DCI 1_1。其中，该其它格式的第一类DCI的格式与DCI格式0_0或DCI格式0_1不同，该该其它格式的第一类DCI中可以包括DCI格式0_0和/或DCI格式0_1中包括的传输参数中的一种或多种；该其它格式的 第二类DCI的格式与DCI格式1_0或DCI格式1_1不同，该该其它格式的第二类DCI中可以包括DCI格式1_0和/或DCI格式1_1中包括的传输参数中的一种或多种。针对PDSCH或PUSCH，可以设计回退(fallback)DCI和非回退(non-fallback)DCI。例如，PUSCH的回退DCI的格式为DCI 0_0，PUSCH的非回退DCI的格式为DCI 0_1，PDSCH的回退DCI的格式为DCI 1_0，PDSCH的非回退DCI的格式为DCI 1_1。非回退DCI指示的信息种类比回退DCI指示的信息种类多，非回退DCI支持的功能更多。示例性地，如表1所示，回退DCI不支持带宽部分(bandwidth part，BWP)切换，非回退DCI支持BWP切换。
表1
Figure PCTCN2021086730-appb-000001
下面，将依次介绍本申请实施例中的BWP、BWP切换、DCI格式的具体内容、以及搜索空间等。
BWP和BWP切换
在本申请实施例中，一个小区可以对应一个下行载波。一个小区可以等效于一个下行载波。例如，一个小区可以对应一个下行载波和一个上行载波；或者，一个小区可以对应一个下行载波、一个上行载波和一个补充上行(supplementary uplink，SUL)载波。例如，在LTE系统中，一个小区可以对应一个下行载波和一个上行载波。例如，在NR系统中，一个小区可以对应一个下行NR载波和一个上行NR载波，或者一个小区可以对应一个下行NR载波、一个上行NR载波和一个SUL载波。UE可以基于NR技术，在NR载波上向基站发送上行信号。SUL载波可以看做是NR系统和LTE共用的载波，UE可以基于NR技术或LTE技术，在SUL载波上向基站发送上行信号。
一个载波，例如一个上行载波或一个下行载波，可以对应于频域中的一段频率资源。可以设置该载波的中心频点和频域范围，或者可以设置该载波的起始频点和结束频点。对于FDD系统，下行载波和上行载波是频率范围不同的载波。对于时分双工(time division duplex，TDD)系统，一个载波可以被时分地配置为上行载波或下行载波。
可以在载波中为UE配置BWP或者BWP对。本申请实施例的方法既可以用于基于BWP对的设计，又可以用于基于BWP的设计。
在本申请实施例中，在基于BWP对的设计中：一个BWP上可以用于进行下行信号传输或上行信号传输，但是不能既用于进行下行信号传输又用于进行上行信号传输。该设计中，基站和UE在载波上进行通信时，可以从载波的资源中为UE配置一个或多个BWP对，用于基站和UE间的通信。一个BWP对中可以包括至少一个下行 BWP和至少一个上行BWP。例如，一个BWP对中包括一个下行BWP和一个上行BWP，或者一个BWP对中包括一个下行BWP、一个上行BWP和一个辅助上行(supplementary uplink，SUL)BWP。一个BWP中，例如一个下行BWP或一个上行BWP中，可以包括一段连续的频域资源，例如包括一个或多个连续的子载波、资源块(resource block，RB)、或资源块组(resource block group，RBG)等。对于每个BWP，基站可以为UE配置该BWP的以下参数中的一种或多种：频域资源位置、BWP标识(identifier，ID)、子载波间隔、和循环前缀(cyclic prefix，CP)类型。
基站和UE在一个BWP对上通信时，在该BWP对的下行BWP上进行下行信号传输，在该BWP对的上行BWP上进行上行信号传输。示例性地，基站在下行BWP上向UE发送寻呼消息、同步信号、广播信道、PDCCH、PDSCH、和下行参考信号等；和/或，UE在上行BWP上向基站发送PUSCH、PUCCH、和上行参考信号等。在本申请实施例中，同步信号和广播信道可以包括于同步信号块(synchronization signal block，SSB)中。
可选地，基站可以为UE配置一个或多个(例如配置2个、3个、4个或其它个数)候选BWP对。当为UE配置多个候选BWP对时，基站可以从该多个候选BWP对中为UE配置至少一个激活BWP对。示例性地，基站可以通过DCI中的BWP指示域，指示从多个候选BWP对中为UE激活的BWP对。再示例性地，一个DCI用于调度PDSCH时，该DCI中可以包括BWP指示域，用于从UE的多个候选BWP对的多个下行BWP中指示为UE激活的下行BWP；和/或，一个DCI用于调度PUSCH时，该DCI中可以包括BWP指示域，用于从UE的多个候选BWP对的多个上行BWP中指示为UE激活的上行BWP。
在本申请实施例中，在基于BWP的设计中：一个BWP既可以用于进行下行信号传输、又可以用于进行上行信号传输。该设计中，基站和UE在载波上进行通信时，可以从载波的资源中为UE配置一个或多个BWP，用于基站和UE间的通信。一个BWP中可以包括一段连续的频域资源，例如包括一个或多个连续的子载波、RB、或RBG等。该BWP中可以包括上行部分和/或下行部分。对于每个BWP，基站可以为UE配置该BWP的以下参数中的一种或多种：频域资源位置、BWP ID、子载波间隔、和CP类型。
示例性地，针对一个BWP，基站和UE在该BWP上通信时，如果该BWP中包括下行部分，基站在该BWP的下行部分上向UE发送寻呼消息、同步信号、广播信道、PDCCH、PDSCH、和下行参考信号；和/或，如果该BWP中包括上行部分，UE在该BWP的上行部分上向基站发送PUSCH、PUCCH、和上行参考信号等。
可选地，基站可以为UE配置一个或多个候选BWP。为UE配置多个候选BWP时，基站可以从该多个候选BWP中为UE配置至少一个激活BWP，该激活BWP用于基站和UE进行数据传输。示例性地，基站可以通过DCI中包括的BWP指示域，指示从多个候选BWP中为UE激活的BWP。
被激活的BWP(对)能够用于基站和UE进行数据传输，没有被激活的BWP(对)不能够用于基站和UE进行数据传输。例如，被激活的BWP(对)可用于基站和UE进行PDCCH、PDSCH、PUSCH、和PUCCH等传输，而没有被激活的BWP (对)不能用于传输这些信道。可选地，UE可以在没有被激活的BWP(对)上进行无线资源管理(radio resource management，RRM)测量。例如UE可以根据SSB或者信道状态信息参考信号(channel state information-reference signal，CSI-RS)等参考信号，测量参考信号接收功率(reference signal received power，RSRP)或参考信号接收质量(reference signal received quality，RSRQ)。可以通过指示UE的激活BWP(对)，可以实现UE的激活BWP(对)的切换，充分利用频率分集增益。
基于BWP对的设计和基于BWP的设计的工作方式是类似的，区别主要如上所述。为了简化描述，本申请实施例以基于BWP的设计为例进行描述。
本申请实施例中，UE的激活BWP的带宽可以小于或等于UE的带宽能力，也可以大于UE的带宽能力，本申请实施例不做限制。UE的带宽能力可以表示为UE和基站在进行数据传输时可以同时使用的最大带宽(包括保护频带)，例如UE的带宽能力可以为20MHz、10MHz、或者5MHz。
DCI格式的具体内容
在本申请实施例中，DCI格式用于定义DCI中包括的信息域的种类，以及用于定义该DCI中各信息域的长度。其中，DCI中一个信息域的长度是指该信息域中包括的比特数。
示例性地，DCI 1_0中包括以下信息域中的一种或多种。其中，本申请实施例不对DCI 1_0的名称进行限制。例如DCI 1_0还可以称为下行回退DCI格式、第一DCI格式、或DCI 4_0等，本申请实施例不做限制。
(1)DCI格式的标识(identifier for DCI formats)域，值被设置为1，表示该DCI为下行DCI格式，即用于调度PDSCH。
在本申请实施例中，一个信息域的大小或长度可以理解为该信息域中包括的比特数。
(2)频域资源分配域，用于指示为PDSCH分配的频域资源。
(3)时域资源分配域，用于指示为PDSCH分配的时域资源。
(4)虚拟RB(virtual resource block，VRB)到物理RB(physical resource block，PRB)的映射域，用于指示为PDSCH分配的频域资源是集中式资源分配还是分布式资源分配。
(5)调制和编码方案(modulation and coding scheme，MCS)域，用于指示PDSCH的调制机制和编码机制(例如码率)。
(6)新数据指示(new data indicator，NDI)域，用于指示PDSCH上传输的下行数据是新传还是重传。
(7)冗余版本(redundancy version，RV)域，用于指示PDSCH的冗余版本。
(8)HARQ进程号(HARQ process number，HPN)域，用于指示PDSCH的混合自动重传请求(hybrid automatic repeat request，HARQ)进程编号。
(9)下行分配索引(downlink assignment index，DAI)域，用于指示基于HARQ的PDSCH传输窗内、有多个下行传输时间单元中传输PDSCH。其中，传输时间单元可以是传输时间间隔、时隙、子帧等时间单元，本申请实 施例不做限制。
(10)调度的PUCCH的传输功率控制(transmit power control，TPC)命令(TPC command for scheduled PUCCH)域，用于控制UE发送PUCCH时的发送功率。
(11)PUCCH的资源指示(PUCCH resource indicator)域，用于指示UE发送上行控制信息所需要的上行传输资源。其中，上行控制信息可以包括PDSCH的确认应答(acknowledge，ACK)/否认应答(negative acknowledgement，NACK)、和/或信道状态信息(channel state information，CSI)。上行传输资源可以包括时频资源和将要使用的PUCCH格式类型。其中，不同的PUCCH格式可以通过PUCCH在时间上占用的符号个数、传输上行控制信息所使用的序列形式以及不同序列的正交方式进行区分。
(12)PDSCH至HARQ反馈定时指示(PDSCH-to-HARQ feedback timing indicator)域，用于指示UE向基站发送PDSCH的HARQ反馈的时间相对UE从基站接收到PDSCH的时间的关系。
(13)预留(reserved)比特域，包括一个或多个比特。
示例性地，DCI 1_1除了包括DCI 1_0所包括的信息域之外，DCI 1_1中还包括以下信息域中的一种或多种。其中，本申请实施例不对DCI 1_1的名称进行限制。例如DCI 1_1还可以称为下行非回退DCI格式、第二DCI格式、或DCI格式4_1等，本申请实施例不做限制。
(1)载波指示(carrier indicator)域，用于指示为PDSCH分配的频域资源所在的载波。通过该信息域可以实现跨载波调度，即承载调度PDSCH的控制信息的载波与承载PDSCH的载波不同。
(2)BWP指示(indicator)域，用于指示UE的激活BWP。其中，为PDSCH分配的频域资源在该激活BWP上。通过该信息域可以实现跨BWP调度，即承载调度PDSCH的控制信息的BWP与承载PDSCH的BWP不同。
(3)更多传输块(transmission block，TB)所对应的MCS域、NDI域、以及RV域。例如，DCI 1_0可以包括1个传输块对应的MCS域、NDI域以及RV域，通过DCI 1_1可以指示2个传输块分别对应的MCS域、NDI域以及RV域；
(4)天线端口指示域，指示用于解调PDSCH的解调参考信号(demodulation reference signal，DMRS)对应的天线端口；
(5)传输配置指示域，用于指示不同的参考信号之间、或者不同的传输信道之间的准共址(quasico-location，QCL)关系。其中，参考信号可以包括同步信号块SSB、解调参考信号(demodulation reference signal，DMRS)、CSI-RS、相位跟踪参考信号(phase tracking reference signal，PTRS)等；传输信道例如可以PDCCH、PDSCH。
(6)码块组(code block group，CBG)传输信息(CBG transmission information，CBGTI)域，用于指示DCI所调度的传输块TB包括的码块的 传输信息。
(7)CBG冲掉信息(CBG flushing out information，CBGFI)域，用于指示哪些CBG可以做合并接收处理，哪些CBG不可以做合并接收处理。
在本申请实施例中，DCI 1_1以及下文的DCI 0_1中用于指示激活BWP的域可以是BWP指示域，也可以是其它名称的域，本申请实施例不做限制。例如，基站可以复用DAI域中的部分或全部比特指示UE的激活BWP，或者基站可以利用频域资源分配域的冗余状态指示UE的激活BWP等。
示例性地，DCI 0_0用于调度上行数据传输，包括以下信息域中的一种或多种。其中，本申请实施例不对DCI 0_0的名称进行限制。例如DCI 0_0还可以称为上行回退DCI格式、第三DCI格式、或DCI 3_0等，本申请实施例不做限制。
(1)DCI格式的标识(identifier for DCI formats)域，值被设置为0，表示该DCI为上行DCI格式，即用于调度PUSCH。
(2)频域资源分配域，用于指示为PUSCH分配的频域资源。
(3)时域资源分配域，用于指示为PUSCH分配的时域资源。
(4)频率跳频标识域，用于指示UE是否使用频率跳频的方式传输PUSCH。
(5)MCS域，用于指示PUSCH的调制机制和编码机制(例如码率)；
(6)NDI域，用于指示PUSCH上传输的上行数据是新传还是重传；
(7)RV域，用于指示PUSCH的冗余版本；
(8)HPN域，与DCI 1_0中含义类似，将PDSCH替换为PUSCH，不做赘述。
(9)调度的PUSCH的传输功率控制命令(TPC command for scheduled PUSCH)域，用于控制UE发送PUSCH时的发送功率，
(10)上行/补充上行(supplement uplink，SUL)指示域，指示用于承载被调度的PUSCH是上行载波，还是补充上行载波。
示例性地，DCI 0_1除了包括DCI 0_0所包括的信息域之外，DCI 0_1中还包括以下信息域中的一种或多种。其中，本申请实施例不对DCI 0_1的名称进行限制。例如DCI 0_1还可以称为上行非回退DCI格式、第四DCI格式、或DCI 3_1等，本申请实施例不做限制。
(1)载波指示(carrier indicator)域，用于指示为PUSCH分配的频域资源所在的载波。通过该信息域可以实现跨载波调度，即承载调度PUSCH的控制信息的载波与承载PUSCH的载波不同。
(2)带宽部分指示(indicator)域，用于指示UE的激活BWP。其中，为PUSCH分配的频域资源在该激活BWP上。通过该信息域可以实现跨BWP调度，即承载调度PUSCH的控制信息的BWP与承载PDSCH的BWP不同。
(3)DAI域，类似DCI format 1_0中的DAI，将PDSCH替换为PUSCH，不做赘述。
(4)探测参考信号(sounding reference symbol，SRS)资源指示域，用于指示SRS的资源。SRS可以由UE发送给基站。
(5)预编码信息和层数指示(precoding information and number of layers)域，用于指示PUSCH的预编码信息和传输层数。
(6)天线端口指示域：用于指示PUSCH的DMRS的天线端口。
(7)SRS请求指示域，用于触发UE发送非周期SRS。
(8)信道状态信息(channel state information，CSI)请求指示域，用于触发UE发送CSI。
(9)CBGTI域，与DCI format 1_1中的CBGTI域类似，将PDSCH替换为PUSCH，不再赘述。
图1所示的方法中，设置第一DCI的大小和第二DCI的大小对齐。其中，第一DCI的格式可以是上述DCI 0_1或DCI 1_1，或者可以是其他格式的DCI，本申请实施例不做限制。其中，该其他格式的DCI用于指示UE的激活BWP，具有BWP切换功能。该其他格式的DCI中可以包括DCI 0_0、DCI 0_1、DCI 1_0和/或DCI 1_1中的一种或多种参数。本申请实施例不做限制。
第一DCI指示UE的激活BWP后，在基站通过另一个DCI(格式可以同第一DCI，或者可以是其他格式的、能够指示激活BWP的DCI)更新UE的激活BWP之前，基站和UE可以在第一DCI指示的激活BWP上传输PDSCH和/或PUSCH。如果第一DCI还用于调度物理数据信道，该物理数据信道在第一DCI所指示的激活BWP上被传输。
图1所示的方法中的第二DCI的格式可以是上述DCI 0_0或DCI 1_0，或者可以是其他格式的DCI，本申请实施例不做限制。其中，该其他格式的DCI不用于指示UE的激活BWP，不具有BWP切换功能。该其他格式的DCI中可以包括DCI 0_0、DCI 0_1、DCI 1_0和/或DCI 1_1中的一种或多种参数。本申请实施例不做限制。
搜索空间
在本申请实施例中，可以为UE配置一个或多个搜索空间。对于一个搜索空间，该搜索空间可以包括一种或多种参数，该搜索空间的任一种参数可以是协议预定义的，或者是基站通过信令指示给UE的。其中，同一个搜索空间的不同参数的配置方式可以相同，也可以不同；不同搜索空间的参数的配置方式可以相同，也可以不同，本申请实施例不做限制。
UE的搜索空间可以是基站通过信令为UE配置(指示)的，或者是预定义的。在UE的一个BWP上或者在一个载波上，可以为UE配置一个或多个搜索空间。
在本申请实施例中，如无特别说明，基站为UE发送的信令可以是以下信令中的任意一种：广播消息、系统信息、无线资源控制(radio resource control，RRC)信令、媒体接入控制(media access control，MAC)控制元素(control element，CE)、或DCI。
对于一个搜索空间，可以通过预定义的方式或者基站通过信令为UE指示的方式，配置该搜索空间的类型是公共搜索空间(common search space，CSS)还是UE 特定搜索空间(UE-specific search space，USS)。对于一个UE，公共搜索空间和UE特定搜索空间的特征对比为：公共搜索空间中传输的DCI是公共DCI，该公共DCI是针对该UE所在的小区中的所有UE的，或者该公共DCI是针对该UE所在的一组UE的，该组UE为小区中的部分UE；UE特定搜索空间中传输的DCI是UE特定DCI，该特定DCI是针对该UE的。进一步地，公共搜索空间可以被配置为允许传输UE特定DCI。
图1所示的方法中，第二DCI为公共DCI。
在本申请实施例中，公共DCI的循环冗余校验(cyclic redundancy check，CRC)位可以根据公共无线网络临时标识(radio network temporary identifier，RNTI)被基站加扰的。相应地，UE检测公共DCI时，使用公共RNTI尝试对DCI进行解扰。如果解扰正确，则认为接收到了公共DCI。该公共RNTI是UE可以获知的，例如是协议预定义的，或者是提前由基站指示给UE的。在本申请实施例中，公共RNTI包括但不限于：系统消息RNTI(system information RNTI，SI-RNTI)、寻呼RNTI(paging radio network temporary identifier，P-RNTI)、或随机接入RNTI(random access RNTI，RA-RNTI)。
在本申请实施例中，公共DCI可以用于调度公共信息。该公共信息可以承载在公共DCI所调度的物理数据信道上。该公共信息包括但不限于：系统消息、寻呼消息、或随机接入响应(random access response，RAR)。
示例性地，对于一个公共DCI，该DCI的CRC位是根据SI-RNTI被加扰的，该DCI调度的PDSCH上携带系统信息块(system information block，SIB)，该SIB用于向小区中的UE广播系统消息；该DCI的CRC位是根据P-RNTI被加扰的，该DCI调度的PDSCH上携带寻呼消息，该寻呼消息用于对一组UE进行寻呼；或，该DCI的CRC位是根据RA-RNTI被加扰的，该DCI调度的PDSCH上携带RAR。
图1所示的方法中，第一DCI为UE特定DCI。在本申请实施例中，UE特定DCI的CRC位可以根据该UE特定的RNTI被基站加扰。相应地，UE检测特定DCI时，使用UE特定RNTI尝试对DCI进行解扰。如果解扰正确，则认为接收到了UE特定DCI。UE特定的RNTI包括但不限于：小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)、半静态调度(semi-persistent scheduling，SPS)-RNTI、MCS-C-RNTI、半持续信道状态信息(semi-persistent channel state information，SP-CSI)-RNTI、或配置调度(configured scheduling，CS)-RNTI。
本申请实施例中，可以配置一个或多个公共搜索空间，第一公共搜索公共搜索空间可以是多个公共搜索空间中的一个或多个(部分或全部)公共搜索空间。可以为UE配置一个或多个UE特定搜索空间，本申请实施例不做限制。第一特定搜索空间可以是UE的多个特定搜索空间中的一个或多个特定搜索空间。
在本申请实施例中，还可以设置UE特定DCI可以在公共搜索空间中传输。例如可以设置第一DCI能够在第二公共搜索空间中被传输。即，第一搜索空间可以是第二公共搜索空间。第二公共搜索空间和第一公共搜索空间可以相同，也可以不同，本申请实施例不做限制。当一个搜索空间中传输一种大小、但可以被多种不同RNTI加扰的DCI时，UE可以通过对该DCI进行解扰获得该DCI的类型。例如，在第二公 共搜索空间中，基站能够向UE发送特定RNTI加扰的特定DCI和公共RNTI加扰的公共DCI。UE在盲检测DCI时，通过解扰DCI，可以获得用于加扰该DCI的RNTI，从而可以得到该DCI是UE特定的DCI还是公共DCI。
对于一个搜索空间，可以通过预定义的方式或者基站通过信令为UE指示的方式，配置该搜索空间的以下参数中的一个或多个：频域资源位置、聚合等级大小、候选PDCCH个数、检测周期、时域资源位置、该搜索空间对应的DCI的格式(即该搜索空间中可以传输的DCI的格式)、和该搜索空间中传输的DCI的大小。其中，时域资源位置包括：该搜索空间在检测周期中的第一时间单元(如时隙)偏移、该搜索空间在检测周期中占用的连续的第一时间单元个数、每个第一时间单元中该搜索空间的第二时间单元(如符号)偏移、和每个第一时间单元中该搜索空间占用的第二时间单元个数。
可选地，该搜索空间的频域资源位置和每个第一时间单元中该搜索空间的第二时间单元个数可以通过以下方式配置：基站为UE指示该搜索空间对应的控制资源集合(control resource set，CORESET)，该CORESET的参数可以看做该搜索空间的参数。
对于一个CORESET，可以通过预定义的方式或者基站通过信令为UE指示的方式，配置该CORESET的：频域资源位置、和每个第一时间单元中该CORESET的第二时间单元个数。可选地，一个CORESET可以对应于一个搜索空间，也可以对应于多个不同的搜索空间，本申请实施例不做限制。
示例性地，搜索空间A对应于CORESET A，该CORESET A在时域占用3个符号。搜索空间A的检测周期为10个时隙，搜索空间A在检测周期中的偏移为3个时隙，搜索空间A在检测周期中占用的连续的时隙为2个时隙、每个时隙中搜索空间A的符号偏移为3个符号。则搜索空间A的时域位置为：在每10个时隙中的、第4个时隙和第5个时隙中的、第4个符号至第6个符号。即在每10个时隙中，搜索空间A所在的时域位置为第4个时隙中的第4个至第6个符号、和第5个时隙中的第4个至第6个符号。搜索空间A的频域资源同CORESET A的频域资源。
图1所述的方法中，UE的第一搜索空间中传输的DCI(第一DCI)大小和UE的第一公共搜索空间中传输的DCI(第二DCI)大小相同，即为第一搜索空间和第一公共搜索空间配置一种相同的DCI大小，可以减小UE盲检测PDCCH的次数。
例如，第一搜索空间为第一特定搜索空间。UE在第一特定搜索空间或者第一公共搜索空间中检测DCI时，UE不知道基站是否会在该搜索空间中发送DCI，也不知道基站会发送多少个相应类型的DCI。此外，如果该搜索空间中对应多种大小的DCI，例如对应多种大小不同的DCI格式，和/或一种格式的DCI被不同RNTI加扰时导致DCI大小不同。此时，UE在该搜索空间中检测DCI时，UE通过盲检测的方式，最多需要在该搜索空间的每个PDCCH候选资源位置上进行盲检测，且最多需要在每个PDCCH候选资源位置上根据每种大小的DCI进行盲检测，以试图接收该搜索空间中传输的DCI。UE可能在该搜索空间中接收到了DCI，也可能在该搜索空间中接收不到DCI。当第一公共搜索空间和第一特定搜索空间有重叠部分时，通过图1所示的方法，可以减少UE盲检测PDCCH的次数。例如，在该重叠部分中的每个 PDCCH候选资源位置，如果第一公共搜索空间和第一特定搜索空间的DCI大小不同，UE共需要检测2倍次数；然而，如果第一公共搜索空间和第一特定搜索空间的DCI大小相同，UE只需要检测1倍次数。
示例性地，图2为基站和UE之间传输第一DCI和第二DCI的流程示意图。
操作201，基站为UE发送第一公共搜索空间的配置信息。相应地，UE接收第一公共搜索空间的配置信息。
在携带第一公共搜索空间的配置信息的消息中，还可以携带其他公共搜素空间(例如第二公共搜索空间)的配置信息，本申请实施例不做限制。
操作202，基站为UE发送第一特定搜索空间的配置信息。相应地，UE接收第一特定搜索空间的配置信息。
在携带第一特定搜索空间的配置信息的消息中，还可以携带其他特定搜素空间(例如第二特定搜索空间)的配置信息，本申请实施例不做限制。
可选地，操作201中的第一公共搜索空间的配置信息和操作202中的第一特定搜索空间的配置信息可以携带在一条消息中，也可以携带在不同的消息中，，本申请实施例不做限制。
可选地，操作203，基站在第一公共搜索空间中向UE发送第二DCI，第二DCI用于调度公共信息。相应地，UE在第一公共搜索空间中从基站检测第二DCI。
可选地，操作204，基站向UE发送第二DCI所调度的公共信息。相应地，UE接收基站所发送的公共信息。
示例性，在第一公共搜索空间中，基站为UE发送一个第二DCI。此外，基站为UE发送第二DCI所调度的PDSCH，该PDSCH上携带系统消息。相应地，UE在第一公共搜索空间中从基站检测该第二DCI，UE可能检测到该第二DCI，也可能没检测到该第二DCI。如果UE检测到该第二DCI，则可以利用该第二DCI所指示的传输参数接收PDSCH，得到该PDSCH上携带的系统消息。
示例性，在第一公共搜索空间中，基站为UE发送两个第二DCI。此外，基站为UE发送其中第一个第二DCI所调度的PDSCH，该PDSCH上携带系统消息；并向UE发送第二个第二DCI所调度的PDSCH，该PDSCH上携带寻呼消息。相应地，UE在第一公共搜索空间中从基站检测第二DCI。UE可能检测到一个第二DCI，也可能检测到两个DCI，或者可能没有检测到第二DCI。如果UE检测到其中第一个第二DCI，则可以利用该第二DCI所指示的传输参数接收PDSCH，得到该PDSCH上携带的系统消息。如果UE检测到其中第二个第二DCI，则可以利用该第二DCI所指示的传输参数接收PDSCH，得到该PDSCH上携带的寻呼消息。
可选地，操作205，基站在第一特定搜索空间中向UE发送第一DCI。
可选地，操作206，基站和UE传输第一DCI所调度的PDSCH或PUSCH。
示例性，在第一特定搜索空间中，基站为UE发送一个第一DCI。此外，基站为UE发送第一DCI所调度的PDSCH，该PDSCH上携带该UE的特定信息。相应地，UE在第一特定搜索空间中从基站检测该第一DCI，UE可能检测到该第一DCI，也可能没检测到该第一DCI。如果UE检测到该第一DCI，则可以利用该第一DCI所指示的传输参数接收PDSCH，得到该PDSCH上携带的该UE的特定信息。
示例性，在第一特定搜索空间中，基站为UE发送两个第一DCI，其中，第一个第一DCI用于调度PDSCH，第二个第一DCI用于调度PUSCH。此外，基站为UE发送第一个第一DCI所调度的PDSCH，该PDSCH上携带该UE的特定信息。相应地，UE在第一特定搜索空间中从基站检测第一DCI，UE可能检测到一个第一DCI，也可能检测到两个第一DCI，也可能没检测到第一DCI。如果UE检测到第一个第一DCI，则可以利用该第一DCI所指示的传输参数接收PDSCH，得到该PDSCH上携带的该UE的特定信息。如果UE检测到第二个第一DCI，则可以利用该第一DCI所指示的传输参数向基站发送PUSCH，该PUSCH上携带该UE的特定信息。
可选地，基站还可以在第一公共搜索空间中向UE发送第一DCI。操作类似205和206，将其中的第一特定搜索空间替换为第一公共搜索空间即可，此处不再赘述。此时，在第一公共搜索空间中，UE通过可能的RNTI尝试解扰DCI，如果解扰正确，UE可以得到用于加扰该DCI的RNTI，从而可以得到该DCI是公共DCI还是UE特定DCI。
本申请实施例不限制上述操作的执行顺序，例如操作201和202可以是在相同的时间单元执行的。例如，操作203-206可以是在相同的时间单元执行的；或者操作203和204是在一个时间单元执行的，操作205和206是在另一个时间单元执行的。
图1所示的方法可以是下述情况1至情况4中的任一种情况。
情况1，第一DCI只能用于调度PDSCH。
情况2，第一DCI只能用于调度PUSCH。
情况3，第一DCI用于调度PDSCH或PUSCH。第一DCI既可以用于调度PDSCH，也可以用于调度PUSCH，但是一个第一DCI不能同时用于调度PDSCH和PUSCH。
在该情况下，第一DCI还可以用于指示第一DCI是用于调度PDSCH还是用于调度PUSCH。通过该方法，使得UE需要检测的第一DCI的大小的种类进一步减小，即用于调度PDSCH的DCI和用于调度PUSCH的DCI这两种格式的DCI的大小相同，从而可以降低UE检测DCI的次数。
示例性地，第一DCI中可以包括DCI格式的标识域，用于指示第一DCI是用于调度PDSCH还是PUSCH。例如，第一DCI中包括1比特指示域，当该指示域的值是第一值时，该第一DCI用于调度PUSCH，当该指示域是第二值时，该第一DCI用于调度PDSCH。其中，第一值和第二值可以分别是1和0，或者可以分别是0和1，本申请实施例不做限制。UE接收到一个第一DCI后，根据该1比特指示域的值，确定该第一DCI是用于调度PDSCH还是PUSCH，从而可以根据相应的DCI格式对该第一DCI进行解读。
再示例性地，当第一DCI被第一RNTI加扰时，该第一DCI用于调度PUSCH，当第一DCI被第二RNTI加扰时，该第一DCI用于调度PDSCH。UE接收第一DCI时，如果UE使用第一RNTI对第一DCI解扰成功，则UE认为该第一DCI是用于调度PUSCH的，从而可以根据PUSCH的DCI格式对该第一DCI进行解读，并利用第一DCI指示的传输参数向基站发送PUSCH；如果UE使用第二RNTI对第一DCI的解扰成功，则UE认为该第一DCI是用于调度PDSCH的，从而可以根据PDSCH的 DCI格式对该第一DCI进行解读，并利用第一DCI指示的信息从基站接收PDSCH。
在本申请实施例中，用于调度PDSCH的DCI格式和用于调度PUSCH的DCI格式中包括的信息域的种类可以全部相同，或者可以全部不同，或者可以部分相同部分不相同，本申请实施例不做限制。如果这两种DCI格式中包括相同种类的信息域，例如都包括频域资源分配域，用于调度PDSCH的DCI中的频域资源分配域的长度(如比特数)和用于用于调度PUSCH的DCI中的频域资源分配域的长度可以相同，也可以不同，本申请实施例不做限制。
情况4，第一DCI用于调度PDSCH和/或PUSCH。第一DCI既可以用于调度PDSCH，也可以用于调度PUSCH。一个第一DCI可以只用于调度PDSCH、只用于调度PUSCH、或同时用于调度PDSCH和PUSCH。
在该情况下，第一DCI还可以用于指示第一DCI是用于调度PDSCH、是用于调度PUSCH、或是用于调度PDSCH和PUSCH。通过该方法，使得UE需要检测的第一DCI的大小的种类进一步减小，即用于调度PDSCH的DCI、用于调度PUSCH的DCI、和用于PDSCH和PUSCH的DCI这三种格式的DCI的大小相同，从而可以降低UE检测DCI的次数。
当第一DCI用于调度PUSCH时，第一DCI中包括PUSCH的传输参数，不包括PDSCH的传输参数。当第一DCI用于调度PDSCH时，第一DCI中包括PDSCH的传输参数，不包括PUSCH的传输参数。当第一DCI同时用于调度PDSCH和PUSCH时，第一DCI中同时包括PDSCH和PUSCH的传输参数。
示例性地，第一DCI中可以包括DCI格式的标识域，用于指示第一DCI是用于调度PDSCH、PUSCH、或PDSCH和PUSCH。例如，第一DCI中包括2比特指示域，当该指示域的值是第一值时，第一DCI用于调度PUSCH，当该指示域是第二值时，第一DCI用于调度PDSCH，当该指示域是第三值时，第一DCI用于调度PDSCH和PUSCH。示例性地，表2a-表2c给出了第一DCI中的2比特指示域的值与第一DCI所调度的信息的示例性对应关系，其他可能的对应关系不再一一列举。
表2a
第一DCI中2比特指示域的值 第一DCI所调度的内容
00 PDSCH
01 PUSCH
10 PDSCH和PUSCH
11 预留
表2b
第一DCI中2比特指示域的值 第一DCI所调度的内容
00 PUSCH
01 PDSCH
10 预留
11 PDSCH和PUSCH
表2c
第一DCI中2比特指示域的值 第一DCI所调度的内容
00 PDSCH和PUSCH
01 PDSCH
10 PUSCH
11 预留
再示例性地，当第一DCI被第一RNTI加扰时，该第一DCI用于调度PUSCH；当第一DCI被第二RNTI加扰时，第一DCI用于调度PDSCH，当第一DCI被第三RNTI加扰时，第一DCI用于调度PDSCH和PUSCH。UE接收到第一DCI时，如果UE使用第一RNTI对第一DCI解扰成功，则UE认为第一DCI是用于调度PUSCH的，从而可以根据PUSCH的DCI格式对第一DCI进行解读，并利用第一DCI指示的传输参数向基站发送PUSCH；如果UE使用第二RNTI对第一DCI解扰成功，则UE认为第一DCI是用于调度PDSCH的，从而可以根据PDSCH的DCI格式对第一DCI进行解读，并利用第一DCI指示的传输参数从基站接收PDSCH；如果UE使用第三RNTI对第一DCI解扰成功，则UE认为第一DCI是用于调度PDSCH和PUSCH的，从而可以根据相应的DCI格式对该第一DCI进行解读，并利用第一DCI指示的PUSCH的传输参数向基站发送PUSCH，利用第一DCI指示的PDSCH的传输参数从基站接收PDSCH。
在一种可能的实现中，第一搜索空间是UE的第一特定搜索空间。UE的第一特定搜索空间包括于该UE的多个特定搜索空间中，例如2个、3个、4个或者更多个。该多个特定搜索空间中的任意一个特定搜索空间可以对应N1种DCI格式。其中，N1为大于或等于1的正整数，其中任意两个不同特定搜索空间对应的N1值可以相同，也可以不同；如果该两个不同特定搜索空间对应的N1值相同，它们所对应的DCI的具体格式可以相同，也可以不同，本申请实施例不做限制。该多个特定搜索空间共对应N2种DCI格式，该N2种DCI格式的DCI在相应的特定搜索空间中传输时DCI大小相同，其中，N1为大于等于1的整数，N2为大于等于N1的整数。
在本申请实施例中，对于任意一个特定搜索空间，如果该特定搜索空间对应N1种DCI格式，且N1大于1，该N1种DCI格式对应的DCI大小相同，则对于该N1种DCI格式，可以通过DCI中的指示域、和/或用于加扰该DCI的RNTI对不同格式的DCI进行区分。示例性地，该特定搜索空间对应于DCI格式A和DCI格式B，则DCI A和DCI B可以通过以下任一种方式进行区分：
方式A：DCI A和DCI B中包括DCI格式的标识域，用于指示该DCI的格式是DCI A还是DCI B。例如，UE接收到一个DCI，该DCI中包括1比特指示域，当该指示域的值是第一值时，该DCI的格式是DCI A，当该指示域是第二值时，该DCI的格式是DCI B。其中，第一值和第二值可以分别是1和0，或者可以分别是0和1，本申请实施例不做限制。
方式B：DCI A和DCI B被RNTI加扰，该RNTI用于指示该DCI的格式是DCI A还是DCI B。例如，UE接收到一个DCI，如果使用RNTI A对该DCI解扰成功， 则认为该DCI的格式是DCI A，如果使用RNTI B对该DCI解扰成功，则认为该DCI的格式是DCI B。
方式C：DCI A和DCI B中包括DCI格式的标识域，且DCI A和DCI B被RNTI加扰，该标识域和该RNTI一起指示该DCI的格式是DCI A还是DCI B。例如，UE接收到一个DCI，该DCI中包括1比特指示域，如果使用RNTI A对该DCI解扰成功，且该指示域的值是第一值时，则认为该DCI的格式是DCI A，如果使用RNTI B对该DCI解扰成功，且该指示域的值是第二值时，则认为该DCI的格式是DCI B。
可选地，该方法可以和图1所示的方法结合使用。此时，该多个特定搜索空间中传输的DCI的大小和第二DCI的大小。即配置该多个特定搜索空间和第一公共搜索空间对应一种相同的DCI大小。
可选地，或者，该方法可以不依赖于图1所示的方法被使用。该方法不依赖于图1所示的方法被使用时，关于第一特定搜索空间的介绍、以及第一特定搜索空间中所传输的第一DCI的介绍请参见前文，此处不再赘述。该方法不依赖于图1所示的方法被使用时，该多个特定搜索空间中传输的DCI可以和图1所示的方法中的第二DCI的大小对齐，也可以和另一种大小对齐。该另外一种大小可以是预定义的值，也可以是该N2种DCI格式中一种DCI格式对应的DCI大小。例如，该DCI大小是该N2种DCI格式对应的DCI大小中最小的DCI大小，或者是该N2种DCI格式对应的DCI大小中最大的DCI大小。
可选地，该多个特定搜索空间可以是为UE配置的部分特定搜索空间，也可以是为UE配置的全部特定搜索空间，本申请实施例不做限制。例如，该多个特定搜索空间是在UE的一个BWP中为UE配置的全部特定搜索空间。
示例性地，UE有3个特定搜索空间，分别为特定搜索空间A、特定搜索空间B、和特定搜索空间C。各搜索空间对应的DCI格式如表3所示。示例性的，特定搜索空间A中传输的DCI可以看做第一DCI，第一格式为第一DCI调度PDSCH时的格式，第二格式为第一DCI调度PUSCH时的格式，特定搜索空间A可以看做第一特定搜索空间。表3中的3个特定搜索空间共对应第一格式、第二格式、第三格式和第四格式共4种DCI格式。这4种格式对应的多个DCI在相应的特定搜索空间中被传输时，该多个DCI的大小是对齐的，即该多个DCI的大小是相同的。
表3
Figure PCTCN2021086730-appb-000002
该方法中，UE的多个特定搜索空间传输的DCI的大小是相同的，即该多个特定搜索空间被配置为对应一种DCI大小，当UE的该多个特定搜索空间有重叠部分时，可以降低UE盲检测PDCCH的次数。
在本申请实施例中，示例性地，基站向UE发送DCI时，可以对该DCI进行如下述操作1至操作6中的至少一项。相应地，UE在接收DCI时，可以进行相应的反向操作。如：去填充、添加被截断的信息位、解扰、解信道编码、和/或解调等，此处不再赘述。
可选地，操作1：根据该DCI对应的格式得到该DCI。其中，该DCI中的信息比特可以称为该DCI的原始比特流。
可选地，操作2：对输入比特流进行截短或填充，得到截短或填充比特流。其中，输入比特流可以是原始比特流。
在本申请实施例中，对于被截短的信息域的种类和个数不做限制。例如，被截短的信息域可以是以下信息域中的一种或多种：频域资源分配域、时域资源分配域、MCS、和其他可能的信息域。
可选地，操作3：对输入比特流添加循环冗余校验(cyclic redundancy check，CRC)校验位，得到CRC比特流。其中，CRC校验位可以用于UE进行错误检测。其中，操作3的输入比特流可以是原始比特流，或者可以是截短或填充比特流。
可选地，操作4：对输入比特流进行信道编码，得到信道编码比特流。其中，信道编码的方法可以是低密度奇偶校验码(low density parity check codes，LDPC)、极化码(polar codes)、或Turbo码(Turbo codes)。编码的码率可以是诸如1/2、1/3、2/3等大于0的实数。可选地，信道编码操作中还可以包括速率匹配操作。速率匹配操作可以理解为，UE根据数据传输对应的资源个数以及数据传输的调制阶数，将信道编码之后的输出比特流通过速率匹配操作，得到与数据传输资源以及调制阶数匹配的输出比特流。其中，操作4的输入比特流可以是原始比特流、截短或填充比特流、或者CRC比特流。
可选地，操作5，基于加扰序列(scrambling sequence)，对输入比特流进行加扰，得到加扰比特流。进行加扰操作可以降低小区间干扰。其中，操作5的输入比特流可以是原始比特流、截短或填充比特流、CRC比特流、或信道编码比特流。
可选地，操作6，对输入比特流进行调制，得到调制符号。调制的方法可以是QAM调制，调制的阶数可以是16QAM、64QAM、或128QAM等，本申请实施例不做限制。其中，操作6的输入比特流可以是原始比特流、截短或填充比特流、CRC比特流、信道编码比特流或加扰比特流。
在本申请实施例中，一个DCI A(例如第一DCI)和另一个DCI B(例如第二DCI)的大小相同或对齐，包括以下几种情况中的任一种情况。其中，例如DCI A是第一DCI，DCI B是第二DCI；或者，DCI A是第二DCI，DCI B是第一DCI；或者，DCI A是第一特定搜索空间中的DCI，DCI B是第二特定搜索空间中的DCI，本申请实施例不做限制。
(1)根据DCI A对应的DCI格式得到DCI A，根据DCI B对应的DCI格式得到DCI B，DCI A中包括的比特数和DCI B中包括的比特数相同。即DCI A的原始比特流的比特数和DCI B的原始比特流的比特数相同。在本申请实施例中，DCI的原 始比特流也可以称为DCI的信息比特流。
(2)根据DCI A对应的DCI格式得到DCI A，对DCI A进行填充或者截短，根据DCI B对应的DCI格式得到DCI B，被填充或被截短的DCI A中包括的比特数和DCI B中包括的比特数相同。即DCI A的截短或填充比特流的比特数和DCI B的原始比特流的比特数相同。
在一种可能的实现中，如果可以通过截短或者填充比特流的方式将DCI A和DCI B进行对齐，那么，如果确定DCI A的原始比特流和DCI B的原始比特流的比特数相同，则不需要对DCI A或DCI B进行截短或者填充比特流。
(3)根据DCI A对应的DCI格式得到DCI A，根据DCI B对应的DCI格式得到DCI B，对DCI B进行填充或者截短，DCI A中包括的比特数和被填充或被截短的DCI B中包括的比特数相同。即DCI A的原始比特流的比特数和DCI B的截短或填充比特流的比特数相同。
(4)根据DCI A对应的DCI格式得到DCI A，根据DCI B对应的DCI格式得到DCI B。对DCI A进行第一操作，得到第一比特流。对DCI B进行第一操作，得到第二比特流。第一比特流和第二比特流的比特数相同。其中，第一操作可以包括：添加CRC；添加CRC和信道编码；添加CRC和加扰；或，添加CRC、信道编码和加扰。可选地，针对DCI A、DCI B、或者针对DCI A和DCI B，第一操作中还可以包括截短或填充。
(5)根据DCI A对应的DCI格式得到DCI A，根据DCI B对应的DCI格式得到DCI B。对DCI A进行第二操作，得到第一组调制符号。对DCI B进行第二操作，得到第二组调制符号。第一组调制符号和第二组调制符号的符号数相同。其中，第二操作可以包括：调制；添加CRC和调制；信道编码和调制；加扰和调制；添加CRC、信道编码和调制；添加CRC、加扰和调制；或，添加CRC、信道编码、加扰和调制。可选地，针对DCI A、DCI B、或者针对DCI A和DCI B，第二操作中还可以包括截短或填充。
在本申请实施例中，如前文所述，为了使基站发送至UE的不同DCI的大小相同，基站可以对其中一个或多个DCI进行填充或截短，使这些不同DCI被传输时大小对齐至相同。其中，该不同DCI可以是第一DCI和第二DCI，或者可以是UE的不同特定搜索空间中传输的DCI。为了简化描述，这里以第一DCI和第二DCI为例进行描述。
示例性的，基站可以对第一DCI的原始比特流进行填充或者截短，使得其大小对齐至第二DCI的大小。类似的，可选的，基站可以对第二DCI的原始比特流进行填充或者截短，使得其大小对齐至第一DCI的大小。为了简化描述，这里以第一DCI向第二DCI的对齐为例进行描述。
在一种可能的实现中，第一DCI中包括填充位。该填充位中包括至少一个比特。该至少一个比特的值是预配置的，是基站和UE都知道的。例如，该至少一个比特的每个比特的值都为0。再例如，该至少一个比特的每个比特的值都为1。可选地，可以预定义填充位在第一DCI中的位置或者预定义填充规则，例如该填充位可以被添加在第一DCI的最高位信息之前或最低位信息之后。这个规则是基站和UE事 先知道的。
示例性地，基站根据第一DCI对应的DCI格式确定第一DCI后，如果第一DCI的大小小于第二DCI的大小，基站对第一DCI进行填充。假设所填充的比特的值为零，即认为基站对第一DCI进行了补零操作，补零后的第一DCI的大小等于第二DCI的大小。基站将补零后的第一DCI发送给UE。
UE可以根据第一DCI对应的DCI格式得到补零前的第一DCI的大小，可以根据第二DCI对应的格式得到第二DCI的大小，从而UE可以确定出第一DCI中补零信息位的比特数。UE从基站接收到第一DCI后，从第一DCI中去掉补零信息位或者忽略第一DCI中的补零信息位，从而，UE可以根据第一DCI中的非补零信息位确定出第一DCI的内容。例如，第一DCI是用于调度PDSCH时，UE可以根据确定出的第一DCI的内容，从基站接收PDSCH。再例如，第一DCI是用于调度PUSCH，UE可以根据确定出的第一DCI的内容向基站发送PUSCH。
在一种可能的实现中，第一DCI中包括截短信息域。被截短的信息域包括一个或多个信息域，每个信息域中可以被截断掉1个或多个比特。不同种类的信息域被截断掉的比特数可以相同，也可以不同。第一DCI中的哪个(或哪些)信息域被截短是预定义的，在该信息域中进行截短操作的规则是预定的，即基站和UE事先知道第一DCI中的哪个(或哪些)信息域被截短，该信息域中哪个(或哪些比特会被截断掉)。在本申请实施例中，截断DCI的信息域中的比特或者对DCI进行截短操作可以描述为：对DCI或DCI中的信息域进行打孔。
示例性地，基站根据第一DCI对应的DCI格式确定第一DCI后，如果第一DCI的大小大于第二DCI的大小，基站对第一DCI进行截短。例如，第一DCI中包括频域资源分配域，基站将该域中的高位信息位截断，使得第一DCI的频域资源分配域中不包括这些高位信息位，而仅包括除这些高位信息位之外的低位信息位。再例如，第一DCI中包括两个传输块的信息域，基站将其中一个传输块的信息域截断，使得第一DCI中仅包括另一个传输块的信息域。被截短后的第一DCI的大小等于第二DCI的大小。UE接收到截短后的第一DCI后，如果UE需要解读被截短的信息域，UE可以对该信息域的高位补零，并对补零后的信息域进行解读。例如，第一DCI的频域资源分配域的2位高位信息位被截断，则UE对接收到的第一DCI的频域资源分配域的高位补充2比特，这2比特的值为00，UE解读补零后的频域资源分配域。
可选地，对于被截短的信息域，例如两个传输块的信息域被截断掉一个传输块的信息域，基站可以复用其他信息域对被截短的信息域进行指示。例如可以预定义第二传输块的信息域被截短后，复用第一传输块的信息域对第一和第二传输块进行指示。那么UE可以根据第一DCI包括的第一传输块的信息域，确定第二传输块对应的传输信息。例如，UE可以确定第二传输块的传输信息和第一传输块的传输信息相同，或者UE可以根据第一传输块和第二传输块的传输信息之间的偏移信息，确定第二传输块对应的传输信息。其中，该偏移信息可以是预定义的，也可以是基站通过信令通知UE的。例如，如果第一传输块的信息域指示了MCS 1和RV 1，那么UE接收到第一DCI后，确定第一传输块和第二传输块的MCS都为MCS 1，并确定第一传输块和第二传输块的RV都为RV 1。
在本申请实施例提供的方法中，第一DCI可以用于指示UE的激活BWP，该激活BWP用于UE和基站传输物理数据信道。第一DCI中还可以包括频域资源分配域，用于指示在激活BWP中为该物理数据信道分配的频域资源。其中，该物理数据信道上携带UE的特定信息。
在一种可能的实现中，第一DCI中的频域资源分配域的大小可以是根据初始BWP的带宽或者控制资源集合(control resource set，CORESET)0的带宽确定的。可选地，在本申请实施例中，REDCAP终端和高能力终端可以共享初始BWP和CORESET 0，也可以分别为这两种终端配置独立的初始BWP和CORESET 0。该频域资源分配方法中，如果实现该方法的是REDCAP终端，该频域资源分配方法中的初始BWP和CORESET 0可以是为REDCAP终端配置的初始BWP和CORESET 0，也可以是为高能力终端配置的初始BWP和CORESET 0。
在本申请实施例中，基站可以在初始BWP中向UE发送SSB。SSB中可以携带主信息块(master information block，MIB)。MIB可以用于指示初始BWP的资源位置。UE搜索到SSB后，根据SSB中的MIB的配置，可以得到初始BWP的具体资源位置。在初始BWP中，基站还可以通过PDSCH向UE发送以下公共信息中的一种或多种：系统消息块(system information block，SIB)1、按需系统信息(on-demand system information，OSI)、和寻呼消息。在本申请实施例中，SSB为小区级公共信息，SSB中可以包括主同步信号(primary synchronization signal，PSS)、辅同步信号(secondary synchronization signal，SSS)、和物理广播信道。PBCH上携带MIB。用于指示初始BWP的配置信息的SSB还可以称为小区定义(cell defined)SSB。
在本申请实施例中，CORESET 0的配置信息可以是预配置的，或者是基站通过信令为UE指示的。其中，该信令可以是MIB或者PDCCH的公共配置消息PDCCH-ConfigCommon。例如，MIB可以指示CORESET 0的以下参数中的一种或多种：在载波中的频域资源位置、在时域上占用的符号个数、和CORESET 0与SSB之间的复用方式。如前文所述，CORESET 0可以和搜索空间相关联，UE可以在CORESET 0对应的资源中，按照该搜索空间的配置，检测相应的DCI。CORESET 0关联的搜索空间是公共搜索空间。该公共搜索空间中可以传输由公共RNTI(例如SI-RNTI)加扰的DCI。可选地，该公共搜索空间还可以传输由UE特定RNTI加扰的DCI。
为了简化描述，以下以第一DCI中的频域资源分配域的大小是根据UE的初始BWP的带宽确定的为例进行描述，当该频域资源分配域的大小是根据CORESET 0的带宽确定的时，将下述方法中的初始BWP替换为COREST 0，将初始BWP的带宽替换为CORESET 0的带宽即可。
第一DCI中的频域资源分配域可以通过以下几种方式，指示在UE的激活BWP中为UE的PDSCH或PUSCH分配的频域资源。其中，若指示的是UE的PDSCH的频域资源，UE可以在该频域资源中从基站接收PDSCH。若指示的是UE的PUSCH的频域资源，UE可以在该频域资源中向基站发送PUSCH。
第一种方式(方式0)。
第一DCI中的频域资源分配域中包括N RBG个比特。该N RBG个比特和激活BWP 中的N RBG个RBG一对一地对应。对于该N RBG个比特中的一个比特，当该比特的值为第一值时(如1)，分配给UE的资源中包括该一个比特所对应的RBG；当该比特的值为第二值(如0)或者不为第一值时，分配给UE的资源中不包括该一个比特所对应的RBG。其中，N RBG小于或等于初始BWP中包括的RBG个数。
在本申请实施例中，一个RBG中包括正整数个RB，所包括的RB的个数可以称为该RBG的大小。一个RB中包括正整数个子载波。示例性地，预定义每个RB中包括6个或12个子载波。一个RBG的大小可以是预定义的，例如预定义一个RBG中包括2、4、6、8或16个RB。可替换地，一个RBG的大小可以是根据某个带宽(记为带宽X)的带宽确定的。示例性地，表4示出了带宽X的带宽和RBG的大小的对应关系(配置1或配置2)，其中带宽X为BWP的带宽。当系统中同时支持配置1和配置2时，基站可以通过信令指示UE使用配置1和配置2中的一种配置
表4
Figure PCTCN2021086730-appb-000003
示例性地，上述方式0的方法中，初始BWP中包括的RBG的个数是根据初始BWP的带宽、和初始BWP的RBG大小
Figure PCTCN2021086730-appb-000004
确定的。其中，初始BWP的带宽为初始BWP中包括的RB数
Figure PCTCN2021086730-appb-000005
和
Figure PCTCN2021086730-appb-000006
为正整数。初始BWP的RBG大小可以是预定义的；或者，可以是根据初始BWP的带宽确定的，例如将上述表4中的带宽X替换为初始BWP，将表4中的
Figure PCTCN2021086730-appb-000007
替换为
Figure PCTCN2021086730-appb-000008
就可以得到初始BWP的RBG的大小
Figure PCTCN2021086730-appb-000009
初始BWP中共包括
Figure PCTCN2021086730-appb-000010
个RBG。示例一，
Figure PCTCN2021086730-appb-000011
等于
Figure PCTCN2021086730-appb-000012
当
Figure PCTCN2021086730-appb-000013
能被
Figure PCTCN2021086730-appb-000014
整除时，每个RBG大小相同，都为
Figure PCTCN2021086730-appb-000015
示例二，无论
Figure PCTCN2021086730-appb-000016
是否能被
Figure PCTCN2021086730-appb-000017
整除，
Figure PCTCN2021086730-appb-000018
等于
Figure PCTCN2021086730-appb-000019
其中
Figure PCTCN2021086730-appb-000020
表示初始BWP的起始RB对应的RB索引，在这种情况下，初始BWP中包括的第一个RBG的大小为
Figure PCTCN2021086730-appb-000021
如果
Figure PCTCN2021086730-appb-000022
则初始BWP中最后一个RBG的大小为
Figure PCTCN2021086730-appb-000023
否则，最后一个RBG的大小为
Figure PCTCN2021086730-appb-000024
该初始BWP中包括的其他RBG的大小均为
Figure PCTCN2021086730-appb-000025
其中，mod表示取模操作。在本申请实施例的资源分配方法中，如无特殊说明，相同的变量表示相同的含义，以下不再赘述已经描述过的变量的含义。
在一种可能的实现中，当第一DCI所指示的激活BWP的带宽大于或等于初始BWP的带宽，上述方式0的方法中的N RBG等于初始BWP中包括的RBG个数
Figure PCTCN2021086730-appb-000026
可选地，激活BWP的一个RBG的大小是预定义的，或者是根据激活BWP的带宽确定的。示例性地，激活BWP的带宽和激活BWP中的RBG的大小如表4所示，类似上述根据表4确定初始BWP的RBG大小和RBG个数的方法，可以得到激活BWP的RBG大小。
可选地，当第一DCI所指示的激活BWP的带宽等于初始BWP的带宽时，第一DCI最大能够指示激活BWP中的N RBG个RBG，指示将该N RBG个RBG中的哪些RBG分配给UE。该N RBG个RBG为激活BWP中的全部RBG。
可选地，当第一DCI所指示的激活BWP的带宽大于初始BWP的带宽时，第一DCI最大能够指示激活BWP中的N RBG个RBG，指示将该N RBG个RBG中的哪些RBG分配给UE。该N RBG个RBG为激活BWP中的部分RBG。
可选地，当第一DCI所指示的激活BWP的带宽大于初始BWP的带宽时，该第一DCI中的其它信息域中的部分或全部比特可以被复用，以指示激活BWP中的更多RBG是否分配给UE。可以被复用的信息域例如可以是以下信息域中的一种或多种：DAI域，PUCCH的资源指示域，MCS域，时域资源分配域，和频域资源分配域。例如被复用的比特数为
Figure PCTCN2021086730-appb-000027
此时，频域资源分配域的N RBG个比特和该
Figure PCTCN2021086730-appb-000028
个比特共组成
Figure PCTCN2021086730-appb-000029
个比特，该
Figure PCTCN2021086730-appb-000030
个比特和激活BWP中的
Figure PCTCN2021086730-appb-000031
个RBG一对一地对应。对于该
Figure PCTCN2021086730-appb-000032
个比特中的一个比特，当该比特的值为第一值时(如1)，分配给UE的资源中包括该一个比特所对应的RBG；当该比特的值为第二值(如0)或者不为第一值时，分配给UE的资源中不包括该一个比特所对应的RBG。通过该方法，基站可以指示激活BWP中的部分或全部RBG中的哪些RBG分配给UE。
在一种可能的实现中，第一DCI所指示的激活BWP的带宽小于初始BWP的带宽，上述方式0的方法中的N RBG小于或等于初始BWP中包括的RBG个数
Figure PCTCN2021086730-appb-000033
此时，激活BWP中包括N RBG个RBG。激活BWP的RBG大小是根据激活BWP包括的RB个数
Figure PCTCN2021086730-appb-000034
和N RBG确定的。其中，
Figure PCTCN2021086730-appb-000035
为正整数。示例性的，当
Figure PCTCN2021086730-appb-000036
能被N RBG整除时，激活BWP的每个RBG大小相同，都为
Figure PCTCN2021086730-appb-000037
当
Figure PCTCN2021086730-appb-000038
不能被N RBG整除时，该激活BWP包括的第一个RBG或者最后一个RBG的大小为
Figure PCTCN2021086730-appb-000039
Figure PCTCN2021086730-appb-000040
其余RBG的大小均为
Figure PCTCN2021086730-appb-000041
该方法中，通过改变激活BWP的RBG大小，基站可以指示激活BWP中的全部RBG中的哪些RBG分配给UE。
在一种可能的实现中，第一DCI所指示的激活BWP的带宽大于初始BWP的带宽，上述方式0的方法中的N RBG等于初始BWP中包括的RBG个数
Figure PCTCN2021086730-appb-000042
此时，激活BWP中包括N RBG个RBG。激活BWP的RBG大小是根据激活BWP的带宽，即激活BWP包括的RB个数
Figure PCTCN2021086730-appb-000043
和N RBG确定的。例如，当
Figure PCTCN2021086730-appb-000044
能被N RBG整除时，激活BWP的RBG大小可以表示为
Figure PCTCN2021086730-appb-000045
当N RB不能被N RBG整除时，该激活BWP包括的第一个RBG或者最后一个RBG的大小为
Figure PCTCN2021086730-appb-000046
其余RBG的大小均为
Figure PCTCN2021086730-appb-000047
该方法中，基站可以指示激活BWP中的全部RBG中的哪些RBG分配给UE。
第二种方式:方式1。
示例性地，第一DCI中的频域资源分配域包括
Figure PCTCN2021086730-appb-000048
个比特。其中，
Figure PCTCN2021086730-appb-000049
表示初始BWP中包括的RB个数。
在一种可能的实现中，第一DCI所指示的激活BWP的带宽大于初始BWP的带宽，被添加
Figure PCTCN2021086730-appb-000050
个比特后的频域资源分配域的值为资源指示值(resource indication value,RIV)，该RIV用于指示在激活BWP中为UE的PDSCH或PUSCH分配的起始RB和连续分配的RB个数。其中，
Figure PCTCN2021086730-appb-000051
表示激活BWP包括的RB个数。其中，添加的比特取值可以全为0，或者全为1，或者为其他预配置的值。可选地，基站将第一DCI发送至UE，该第一DCI的频域资源分配域包括
Figure PCTCN2021086730-appb-000052
个比特。UE接收到第一DCI之后，可以在第一DCI的频域资源分配域的高位或低位添加
Figure PCTCN2021086730-appb-000053
Figure PCTCN2021086730-appb-000054
个比特，将添加了比特后的
Figure PCTCN2021086730-appb-000055
个比特的值看做RIV，根据该RIV确定在激活BWP中为UE的PDSCH或PUSCH分配的起始RB和连续分配的RB个数。
在一种可能的实现中，第一DCI所指示的激活BWP的带宽小于初始BWP的带宽。第一DCI的频域资源分配域中的
Figure PCTCN2021086730-appb-000056
个比特的值为RIV，用于指示在激活BWP中为UE的PDSCH或PUSCH分配的起始RB和连续分配的RB个数。其中，
Figure PCTCN2021086730-appb-000057
是激活BWP中包括的RB个数。此时，第一DCI的频域资源分配域中包括冗余的
Figure PCTCN2021086730-appb-000058
个比特。这些冗余的比特可以位于频域资源分配域的最高位，被填充为0或1。UE根据所接收到的频域资源分配域确定所分配的资源时，可以不考虑这些预留位，例如将其截断或者丢弃。
在一种可能的实现中，第一DCI所指示的激活BWP的带宽大于或小于初始BWP的带宽。UE在接收到DCI之后，可以根据标度因子(scaling factor)以及RIV 指示的频率资源确定在激活BWP中为UE的PDSCH或PUSCH分配的资源。其中，RIV为第一DCI的频域资源分配域的
Figure PCTCN2021086730-appb-000059
个比特指示的值。标度因子可以表示为
Figure PCTCN2021086730-appb-000060
UE根据RIV可以确定分配的起始RB位置，该起始RB位置为在激活BWP中为UE的PDSCH或PUSCH分配的起始RB位置。UE根据RIV指示的RB个数与标度因子的乘积得到在激活BWP中为UE的PDSCH或PUSCH分配的RB个数。其中，该乘积不为整数时，可以对其进行向上取整或者向下取整。
第三种方式：方式0或方式1。
示例性地，第一DCI中的频域资源分配域包括
Figure PCTCN2021086730-appb-000061
Figure PCTCN2021086730-appb-000062
个比特。其中，该频域资源分配域中的最高位或最低位比特用于指示资源分配方式是方式0还是方式1。当资源分配方式是方式0时，该资源分配域中的N RBG个比特用于根据上述方式0，指示在第一DCI所指示的激活BWP中为UE的PDSCH或PUSCH分配的资源；当资源分配方式是方式1时，该资源分配域中的
Figure PCTCN2021086730-appb-000063
个比特用于根据上述方式1，指示在第一DCI所指示的激活BWP中为UE的PDSCH或PUSCH分配的资源。
可选地，第一DCI的频域资源分配域中，用于指示所分配的资源的比特数是预定义的。例如预定义该比特数是根据系统所支持的CORESET 0的最小带宽、最大带宽、或其中某个特定带宽确定的。例如，预定义第一DCI中用于指示所分配的资源的比特数是根据CORESET 0的最小带宽确定的，系统所支持的CORESET 0的带宽分别为5MHz、10MHz和20MHz，如果使用上述方式1计算频域资源分配域的大小，这三种带宽对应的频域资源分配域的大小分别为9比特、11比特、13比特，且第一DCI中用于指示所分配的资源的比特数可以总为9比特。这样当CORESET 0的带宽实际为10MHz或者20MHz时，根据CORESET 0的带宽可以得到第一DCI中的频域资源分配域的大小为11比特或13比特，而这11比特或13比特中只有9比特是用于指示资源分配的，那么该第一DCI中的资源分配域可以冗余出2(11-9)比特或者4(13-9)比特。可选地，该冗余的比特可以看做预留比特，该9比特可以看做频域资源分配域的比特。该冗余的2比特或者4比特可以实现更多的数据传输功能，例如用于PUCCH资源指示，又例如用于混合自动重传请求(HARQ的定时指示。示例性地，如下表5示出了当CORESET 0的带宽分别为24RB、48RB和96RB时，第一DCI中的信息域的长度(包括的比特数)。
表5
Figure PCTCN2021086730-appb-000064
Figure PCTCN2021086730-appb-000065
在这种方式下，由于用于指示所分配的资源的比特数总为9比特，当该比特数与在激活BWP中进行资源分配所需要的比特数大小不匹配时，利用该9比特在激活BWP中进行资源分配的方法类似上述三种方式中的任一种，将初始BWP替换为COREST 0即可，且该CORESET 0的带宽为24RB。
在本申请实施例中，当终端设备为REDCAP终端时，该终端设备的初始BWP带宽可以与非REDCAP终端的初始BWP相同，也可以不同。该终端设备的初始CORESET 0可以与非REDCAP终端的初始CORESET 0相同，也可以不同。
通过上述方法，可以使得第一DCI的频域资源分配域的大小和第二DCI的频域资源分配域的大小对齐。在本申请实施例提供的方法中，如果基站向UE发送第二DCI，第二DCI可以调度携带公共信息的物理数据信道，如PDSCH。该PDSCH在初始BWP或者CORESET 0中传输。第二DCI中的频域资源分配域可以指示在初始BWP或者CORESET 0中为PDSCH分配的频域资源。其中，资源分配方式可以是类似方式0或方式1，频域资源分配域的大小是根据初始BWP或者CORESET 0的带宽确定的，指示在初始BWP或者CORESET 0中为PDSCH分配的资源。
示例性地，以在初始BWP中分配资源为例，对于第二DCI，当使用方式0为物理数据信道分配频域资源时，第一DCI中的频域资源分配域中包括
Figure PCTCN2021086730-appb-000066
个比特。该
Figure PCTCN2021086730-appb-000067
个比特和初始BWP中的
Figure PCTCN2021086730-appb-000068
个RBG一对一地对应。对于该
Figure PCTCN2021086730-appb-000069
个比特中的一个比特，当该比特的值为第一值时(如1)，分配给物理数据信道的资源中包括该一 个比特所对应的RBG；当该比特的值为第二值(如0)或者不为第一值时，分配给物理数据信道的资源中不包括该一个比特所对应的RBG。其中，
Figure PCTCN2021086730-appb-000070
为初始BWP中包括的RBG个数。示例性地，以在初始BWP中分配资源为例，对于第二DCI，当使用方式1为物理数据信道分配频域资源时，第二DCI中的频域资源分配域包括
Figure PCTCN2021086730-appb-000071
个比特。该
Figure PCTCN2021086730-appb-000072
个比特的值为RIV，用于指示在初始BWP中为物理数据信道分配的起始RB和连续分配的RB个数。其中，
Figure PCTCN2021086730-appb-000073
表示初始BWP中包括的RB个数。
示例性地，以在初始BWP中分配资源为例，对于第二DCI，当使用方式0或方式1为物理数据信道分配频域资源时，第二DCI中的频域资源分配域包括
Figure PCTCN2021086730-appb-000074
个比特。其中，该频域资源分配域中的最高位或最低位比特用于指示资源分配方式是方式0还是方式1。当资源分配方式是方式0时，该资源分配域中的
Figure PCTCN2021086730-appb-000075
个比特用于根据上述方式0，指示在初始BWP中为物理数据信道分配的资源；当资源分配方式是方式1时，该资源分配域中的
Figure PCTCN2021086730-appb-000076
个比特用于根据上述方式1，指示在初始BWP中为物理数据信道分配的资源。因此，上述方法中，通过根据初始BWP或者CORESET 0的带宽确定第一DCI的频域资源分配域的大小，可以实现第一DCI的频域资源分配域的大小和第二DCI的频域资源分配域的大小对齐。
上述本申请提供的实施例中，分别从网络设备(例如基站)、终端设备(例如UE)、以及网络设备和终端设备之间交互的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，网络设备和终端可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
图3所示为本申请实施例提供的装置300的结构示例图。
在一种可能的实现中，装置300用于实现上述方法中终端设备的功能。该装置可以是终端设备，也可以是能够实现终端设备的功能的其他装置。其中，该其他装置能够安装在终端设备中或者能够和终端设备匹配使用。
装置300中包括接收模块301，用于接收信号或者信息。例如用于从网络设备接收以下信号中的一种或多种：第一DCI、第二DCI、和PDSCH。
装置300中包括发送模块302，用于发送信号或信息。例如用于向网络设备发送PUSCH。
装置300中包括处理模块303，用于处理所接收到的信号或者信息，例如用于解码接收模块301接收到的信号或者信息。处理模块303还可以生成要发送的信号或者信息，例如用于生成要通过发送模块302发送的信号或信息。
本申请实施例中对模块的划分是示意性的，为一种逻辑功能划分，实际实现时可以有另外的划分方式。例如接收模块301和发送模块302还可以集成为收发模块或通信模块。另外，在本申请各个实施例中的各功能模块可以集成在一个模块中，也可以是单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
在一种可能的实现中，装置300用于实现上述方法中网络设备的功能。该装置可以是网络设备，也可以是能够实现网络设备的功能的其他装置。其中，该其他装置能够安装在网络设备中或者能够和网络设备匹配使用。
装置300中包括接收模块301，用于接收信号或者信息。例如用于从终端设备接收PUSCH。
装置300中包括发送模块302，用于发送信号或信息。例如用于向终端设备发送以下信号中的一种或多种：第一DCI、第二DCI、和PDSCH。
装置300中包括处理模块303，用于处理所接收到的信号或者信息，例如用于解码接收模块301接收到的信号或者信息。处理模块303还可以生成要发送的信号或者信息，例如用于生成要通过发送模块302发送的信号或信息。
如图4所示为本申请实施例提供的装置400。
在一种可能的实现中，装置400用于实现上述方法中终端设备的功能，该装置可以是终端设备，也可以是能够实现终端设备的功能的其他装置。其中，该其他装置能够安装在终端设备中或者能够和终端设备匹配使用。例如，装置400可以为芯片系统。本申请实施例中，芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。装置400包括至少一个处理器420，用于实现本申请实施例提供的方法中终端设备的功能。示例性地，处理器420可以生成和发送PUSCH等信号，可以用于接收和处理以下信号中的一种或多种：第一DCI、第二DCI、和PDSCH，具体参见方法示例中的详细描述，此处不做赘述。
装置400还可以包括至少一个存储器430，用于存储程序指令和/或数据。存储器430和处理器420耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器420可能和存储器430协同操作。处理器420可能执行存储器430中存储的程序指令。所述至少一个存储器中的至少一个可以包括于处理器420中。
装置400还可以包括通信接口410，用于通过传输介质和其它设备进行通信，从而用于装置400中的装置可以和其它设备进行通信。示例性地，该其它设备可以是网络设备。处理器420利用通信接口410收发信号，并用于实现上述方法实施例中描述的终端设备的功能。
在一种可能的实现中，装置400用于实现上述方法中网络设备的功能，该装置可以是网络设备，也可以是能够实现网络设备的功能的其他装置。其中，该其他装置能够安装在网络设备中或者能够和网络设备匹配使用。例如，装置400可以为芯片系统。装置400包括至少一个处理器420，用于实现本申请实施例提供的方法中网络设备的功能。示例性地，处理器420可以接收和处理PUSCH等信号，可以用于生成和发送以下信号中的一种或多种：第一DCI、第二DCI、和PDSCH，具体参见方法示 例中的详细描述，此处不做赘述。
装置400还可以包括至少一个存储器430，用于存储程序指令和/或数据。存储器430和处理器420耦合。处理器420可能和存储器430协同操作。处理器420可能执行存储器430中存储的程序指令。所述至少一个存储器中的至少一个可以包括于处理器420中。
装置400还可以包括通信接口410，用于通过传输介质和其它设备进行通信，从而用于装置400中的装置可以和其它设备进行通信。示例性地，该其它设备可以是终端设备。处理器420利用通信接口410收发信号，并用于实现上述方法实施例中描述的网络设备的功能。
本申请实施例中不限定上述通信接口410、处理器420以及存储器430之间的具体连接介质。本申请实施例在图4中以存储器430、处理器420以及收发器410之间通过总线440连接，总线在图4中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图4中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
在本申请实施例中，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
在本申请实施例中，存储器可以是非易失性存储器，比如硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等，还可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)。存储器是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。本申请实施例中的存储器还可以是电路或者其它任意能够实现存储功能的装置，用于存储程序指令和/或数据。
本申请实施例提供的技术方案可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、终端设备或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机可以存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光 介质(例如，数字视频光盘(digital video disc，DVD))、或者半导体介质等。
在本申请实施例中，在无逻辑矛盾的前提下，各实施例之间可以相互引用，例如方法实施例之间的方法和/或术语可以相互引用，例如装置实施例之间的功能和/或术语可以相互引用，例如装置实施例和方法实施例之间的功能和/或术语可以相互引用。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (33)

  1. 一种控制信息传输方法，其特征在于，所述方法包括：
    在第一搜索空间中，检测第一下行控制信息DCI；
    其中，所述第一DCI用于指示终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和网络设备传输物理数据信道，所述第一DCI的大小和第二DCI的大小是对齐的，所述第二DCI是在第一公共搜索空间中能够被传输的DCI，所述第二DCI用于调度系统消息、寻呼消息、或随机接入响应RAR。
  2. 根据权利要求1所述的方法，其特征在于，所述第一搜索空间包括第一特定搜索空间。
  3. 根据权利要求2所述的方法，其特征在于，
    所述第一特定搜索空间包括于所述终端设备的多个特定搜索空间中，所述多个特定搜索空间中的一个特定搜索空间对应N1种DCI格式，所述多个特定搜索空间共对应N2种DCI格式，所述N2种DCI格式的DCI在相应的特定搜索空间中传输时大小是对齐的，其中，N1为大于等于1的整数，N2为大于等于N1的整数。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述第一DCI的大小和第二DCI的大小是对齐的，包括：
    所述第一DCI的比特流的比特数等于所述第二DCI的比特流的比特数；
    其中，所述第一DCI的比特流为所述第一DCI的信息比特流，或者所述第一DCI的比特流为对所述第一DCI的信息比特流进行填充或截短后得到的比特流，所述第二DCI的比特流为所述第二DCI的信息比特流；或，
    所述第一DCI的比特流为对所述第一DCI的信息比特流进行第一操作后得到的比特流，所述第二DCI的比特流为对所述第二DCI的信息比特流进行第一操作后得到的比特流，其中，所述第一操作包括以下操作中的一
    种或多种：添加循环冗余校验CRC位、信道编码、和加扰；或，
    所述第一DCI对应的调制符号的个数等于所述第二DCI对应的调制符号的个数。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，
    所述第一DCI中包括频域资源分配域，用于指示在所述激活BWP中为所述物理数据信道分配的频域资源；其中，
    所述频域资源分配域的大小是根据初始BWP的带宽确定的，所述初始BWP用于所述终端设备从所述网络设备接收同步信号块SSB；或者，
    所述频域资源分配域的大小是根据控制资源集合CORESET 0的带宽确定的，所述CORESET 0用于所述终端设备从所述网络设备接收由系统信息无线网络临时标识SI-RNTI加扰的DCI。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述第一DCI还能够在第二公共搜索空间中被传输。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述物理数据信道包括物理下行共享信道PDSCH或物理上行共享信道PUSCH，所述第一DCI还用于指示 所述第一DCI是用于调度所述PDSCH还是用于调度所述PUSCH。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，
    所述第一DCI的CRC位是利用所述终端设备特定的无线网络临时标识RNTI被加扰的。
  9. 一种控制信息传输方法，其特征在于，包括：
    在终端设备的第一特定搜索空间中，检测第一下行控制信息DCI，其中，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和网络设备传输物理数据信道；
    其中，所述第一特定搜索空间包括于所述终端设备的多个特定搜索空间中，所述多个特定搜索空间中的一个特定搜索空间对应N1种DCI格式，所述多个特定搜索空间共对应N2种DCI格式，所述N2种DCI格式的DCI在相应的特定搜索空间中传输时大小是对齐的，其中，N1为大于等于1的整数，N2为大于等于N1的整数。
  10. 根据权利要求9所述的方法，其特征在于，所述第一DCI还能够在公共搜索空间中被传输。
  11. 根据权利要求9或10所述的方法，其特征在于，所述物理数据信道包括物理下行共享信道PDSCH或物理上行共享信道PUSCH，所述第一DCI还用于指示所述第一DCI是用于调度所述PDSCH还是用于调度所述PUSCH。
  12. 根据权利要求9-11任一项所述的方法，其特征在于，
    所述第一DCI的CRC位是利用所述终端设备特定的无线网络临时标识RNTI被加扰的。
  13. 一种控制信息传输方法，其特征在于，所述方法包括：
    在第一搜索空间中，向终端设备发送第一下行控制信息DCI；
    其中，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和网络设备传输物理数据信道，所述第一DCI的大小和第二DCI的大小是对齐的，所述第二DCI是在第一公共搜索空间中能够被传输的DCI，所述第二DCI用于调度系统消息、寻呼消息、或随机接入响应RAR。
  14. 根据权利要求13所述的方法，其特征在于，所述第一搜索空间包括第一特定搜索空间。
  15. 根据权利要求14所述的方法，其特征在于，
    所述第一特定搜索空间包括于所述终端设备的多个特定搜索空间中，所述多个特定搜索空间中的一个特定搜索空间对应N1种DCI格式，所述多个特定搜索空间共对应N2种DCI格式，所述N2种DCI格式的DCI在相应的特定搜索空间中传输时大小是对齐的，其中，N1为大于等于1的整数，N2为大于等于N1的整数。
  16. 根据权利要求13-15任一项所述的方法，其特征在于，所述第一DCI的大小和第二DCI的大小是对齐的，包括：
    所述第一DCI的比特流的比特数等于所述第二DCI的比特流的比特数；
    其中，所述第一DCI的比特流为所述第一DCI的信息比特流，或者所述第一DCI的比特流为对所述第一DCI的信息比特流进行填充或截短后得到的比特流，所述第二DCI的比特流为所述第二DCI的信息比特流；或，
    所述第一DCI的比特流为对所述第一DCI的信息比特流进行第一操作后得到的比特流，所述第二DCI的比特流为对所述第二DCI的信息比特流进行第一操作后得到的比特流，其中，所述第一操作包括以下操作中的一
    种或多种：添加循环冗余校验CRC位、信道编码、和加扰；或，
    所述第一DCI对应的调制符号的个数等于所述第二DCI对应的调制符号的个数。
  17. 根据权利要求13-16任一项所述的方法，其特征在于，
    所述第一DCI中包括频域资源分配域，用于指示在所述激活BWP中为所述物理数据信道分配的频域资源；其中，
    所述频域资源分配域的大小是根据初始BWP的带宽确定的，所述初始BWP用于向所述终端设备发送同步信号块SSB；或者，
    所述频域资源分配域的大小是根据控制资源集合CORESET 0的带宽确定的，所述CORESET 0用于向所述终端设备发送由系统信息无线网络临时标识SI-RNTI加扰的DCI。
  18. 根据权利要求13-17任一项所述的方法，其特征在于，所述第一DCI还能够在第二公共搜索空间中被传输。
  19. 根据权利要求13-18任一项所述的方法，其特征在于，所述物理数据信道包括物理下行共享信道PDSCH或物理上行共享信道PUSCH，所述第一DCI还用于指示所述第一DCI是用于调度所述PDSCH还是用于调度所述PUSCH。
  20. 根据权利要求13-19任一项所述的方法，其特征在于，
    所述第一DCI的CRC位是利用所述终端设备特定的无线网络临时标识RNTI被加扰的。
  21. 一种控制信息传输方法，其特征在于，包括：
    在终端设备的第一特定搜索空间中，向终端设备发送第一下行控制信息DCI，其中，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和网络设备传输物理数据信道；
    其中，所述第一特定搜索空间包括于所述终端设备的多个特定搜索空间中，所述多个特定搜索空间中的一个特定搜索空间对应N1种DCI格式，所述多个特定搜索空间共对应N2种DCI格式，所述N2种DCI格式的DCI在相应的特定搜索空间中传输时大小是对齐的，其中，N1为大于等于1的整数，N2为大于等于N1的整数。
  22. 根据权利要求21所述的方法，其特征在于，所述第一DCI还能够在公共搜索空间中被传输。
  23. 根据权利要求21或22所述的方法，其特征在于，所述物理数据信道包括物理下行共享信道PDSCH或物理上行共享信道PUSCH，所述第一DCI还用于指示所述第一DCI是用于调度所述PDSCH还是用于调度所述PUSCH。
  24. 根据权利要求21-23任一项所述的方法，其特征在于，
    所述第一DCI的CRC位是利用所述终端设备特定的无线网络临时标识RNTI被加扰的。
  25. 一种通信装置，其特征在于，用于实现权利要求1-12任一项所述的方法。
  26. 一种通信装置，包括处理器和存储器，所述存储器和所述处理器耦合，所述处理器用于执行权利要求1-12任一项所述的方法。
  27. 一种通信装置，包括处理器和通信接口，
    所述处理器利用所述通信接口，在第一搜索空间中，检测第一下行控制信息DCI；
    其中，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和所述网络设备传输物理数据信道，所述第一DCI的大小和第二DCI的大小是对齐的，所述第二DCI是在第一公共搜索空间中能够被传输的DCI，所述第二DCI用于调度系统消息、寻呼消息、或随机接入响应RAR。
  28. 一种通信装置，其特征在于，用于实现权利要求13-24任一项所述的方法。
  29. 一种通信装置，包括处理器和存储器，所述存储器和所述处理器耦合，所述处理器用于执行权利要求13-24任一项所述的方法。
  30. 一种通信装置，包括处理器和通信接口，
    所述处理器利用所述通信接口，在第一搜索空间中，向终端设备发送第一下行控制信息DCI；
    其中，所述第一DCI用于指示所述终端设备的激活带宽部分BWP，所述激活BWP用于所述终端设备和网络设备传输物理数据信道，所述第一DCI的大小和第二DCI的大小是对齐的，所述第二DCI是在第一公共搜索空间中能够被传输的DCI，所述第二DCI用于调度系统消息、寻呼消息、或随机接入响应RAR。
  31. 一种通信系统，其特征在于，包括权利要求25-27任一项所述的通信装置，和权利要求28-30任一项所述的通信装置。
  32. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有指令，当所述指令在计算机上运行时，使得计算机执行权利要求1-24任一项所述的方法。
  33. 一种计算机程序产品，其特征在于，包括指令，当所述指令在计算机上运行时，使得计算机执行权利要求1-24任一项所述的方法。
PCT/CN2021/086730 2020-04-10 2021-04-12 控制信息传输方法 WO2021204300A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21783889.5A EP4117367A4 (en) 2020-04-10 2021-04-12 TRANSMISSION METHODS FOR TAX INFORMATION
US17/961,793 US20230038936A1 (en) 2020-04-10 2022-10-07 Control information transmission method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010280859.8 2020-04-10
CN202010280859.8A CN113518443A (zh) 2020-04-10 2020-04-10 控制信息传输方法

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/961,793 Continuation US20230038936A1 (en) 2020-04-10 2022-10-07 Control information transmission method

Publications (1)

Publication Number Publication Date
WO2021204300A1 true WO2021204300A1 (zh) 2021-10-14

Family

ID=78023664

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/086730 WO2021204300A1 (zh) 2020-04-10 2021-04-12 控制信息传输方法

Country Status (4)

Country Link
US (1) US20230038936A1 (zh)
EP (1) EP4117367A4 (zh)
CN (1) CN113518443A (zh)
WO (1) WO2021204300A1 (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114697878A (zh) * 2020-12-30 2022-07-01 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
CN117178612A (zh) * 2021-05-10 2023-12-05 苹果公司 用于多pusch和多pdsch调度的确认信令
CN116437459A (zh) * 2021-12-29 2023-07-14 维沃移动通信有限公司 数据处理方法、装置、通信设备及可读存储介质
WO2023137676A1 (zh) * 2022-01-20 2023-07-27 北京小米移动软件有限公司 信息处理方法及装置、通信设备及存储介质
WO2024032479A1 (zh) * 2022-08-07 2024-02-15 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
CN116527204B (zh) * 2023-06-28 2023-10-17 新华三技术有限公司 下行控制信息传输方法及装置、电子设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019050379A1 (en) * 2017-09-11 2019-03-14 Lg Electronics Inc. METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM
WO2019087361A1 (ja) * 2017-11-02 2019-05-09 株式会社Ｎｔｔドコモ ユーザ端末及び無線通信方法
CN110391867A (zh) * 2018-04-16 2019-10-29 维沃移动通信有限公司 Dci检测方法、dci发送方法、终端和基站
CN110944388A (zh) * 2018-09-21 2020-03-31 电信科学技术研究院有限公司 一种频域资源的指示、确定方法、网络设备及终端

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10841911B2 (en) * 2015-10-02 2020-11-17 Lg Electronics Inc. Method for transmitting downlink control information in wireless communication system
CN111066371B (zh) * 2017-09-11 2021-04-13 Lg电子株式会社 在无线通信系统中发送下行链路控制信息的方法和设备
WO2019143164A1 (ko) * 2018-01-21 2019-07-25 엘지전자 주식회사 무선 통신 시스템에서 신호를 송신 또는 수신하는 방법 및 이를 위한 장치
US10993254B2 (en) * 2018-02-16 2021-04-27 Qualcomm Incorporated Downlink control information signaling schemes for bandwidth part switching
US11671974B2 (en) * 2018-03-23 2023-06-06 Qualcomm Incorporated Systems and methods for downlink control information format sizing
KR20210007997A (ko) * 2018-05-11 2021-01-20 텔레폰악티에볼라겟엘엠에릭슨(펍) 다운링크 제어 정보(dci) 사이즈 정렬을 위한 시스템 및 방법
CN114157397A (zh) * 2018-05-11 2022-03-08 维沃移动通信有限公司 确定下行控制信息的方法和设备
WO2019222922A1 (en) * 2018-05-22 2019-11-28 Nokia Shanghai Bell Co., Ltd. Two-stage pdcch design to support multiple bwps
JP2020031353A (ja) * 2018-08-23 2020-02-27 シャープ株式会社 端末装置、基地局装置、および、通信方法
KR102586001B1 (ko) * 2018-09-21 2023-10-10 삼성전자주식회사 무선 통신 시스템에서 우선 순위를 고려한 물리계층 채널 송수신 방법 및 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019050379A1 (en) * 2017-09-11 2019-03-14 Lg Electronics Inc. METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM
WO2019087361A1 (ja) * 2017-11-02 2019-05-09 株式会社Ｎｔｔドコモ ユーザ端末及び無線通信方法
CN110391867A (zh) * 2018-04-16 2019-10-29 维沃移动通信有限公司 Dci检测方法、dci发送方法、终端和基站
CN110944388A (zh) * 2018-09-21 2020-03-31 电信科学技术研究院有限公司 一种频域资源的指示、确定方法、网络设备及终端

Also Published As

Publication number Publication date
EP4117367A4 (en) 2023-08-30
US20230038936A1 (en) 2023-02-09
CN113518443A (zh) 2021-10-19
EP4117367A1 (en) 2023-01-11

Similar Documents

Publication Publication Date Title
CN112740603B (zh) 无线通信系统中发送和接收物理层信道的方法和装置
WO2021204300A1 (zh) 控制信息传输方法
US20200120545A1 (en) Resource configuration method, apparatus, and system
WO2020029973A1 (zh) 一种信息的处理方法和通信装置
CN110890947B (zh) 通信方法及装置
CN115004617A (zh) 一种终端设备调度方法及其装置
WO2021030991A1 (zh) 一种上行传输资源的确定方法及装置
WO2021204107A1 (zh) 一种通信方法及装置
CN114731691A (zh) 用于发送下行链路控制信息的方法和基站及用于接收下行链路控制信息的用户设备、设备和存储介质
WO2020187054A1 (zh) 传输数据的方法和通信装置
CA3112419A1 (en) Communication method and apparatus, and computer storage medium
CN113424478A (zh) 用于在无线通信系统中发送和接收下行链路控制信息的方法和装置
CN114616783A (zh) 用于物理上行链路共享信道的解调参考信号的可配置下行链路控制信息的用户装备、基站和方法
CN110958698A (zh) 一种信息指示方法及装置
US20230031932A1 (en) Control information transmission method, apparatus, and system
CN112398577B (zh) 处理数据的方法和通信装置
WO2021197109A1 (zh) 一种通信方法和通信装置
WO2023185433A1 (zh) 通信方法和通信装置
CN110612766A (zh) 上行控制信息传输方法、装置及系统
EP4383616A1 (en) Method, user equipment, processing device, and storage medium for transmitting harq-ack information, and method and base station for receiving harq-ack information
WO2019192515A1 (zh) 一种反馈信息的传输方法和装置
KR20230048303A (ko) Pusch를 전송하는 방법, 사용자기기, 프로세싱 장치, 저장 매체 및 컴퓨터 프로그램, 그리고 pusch를 수신하는 방법 및 기지국
CN110972281A (zh) 一种检测控制信道的方法及装置
CN113287279B (zh) 高可靠性无线通信
WO2023029540A1 (zh) 多载波调度的方法和装置

Legal Events

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

Ref document number: 21783889

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021783889

Country of ref document: EP

Effective date: 20221006

NENP Non-entry into the national phase

Ref country code: DE