CN110474732B - Indication method and device of modulation and coding strategy MCS table and base station - Google Patents

Indication method and device of modulation and coding strategy MCS table and base station Download PDF

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CN110474732B
CN110474732B CN201810450653.8A CN201810450653A CN110474732B CN 110474732 B CN110474732 B CN 110474732B CN 201810450653 A CN201810450653 A CN 201810450653A CN 110474732 B CN110474732 B CN 110474732B
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mcs table
mcs
target
type
indicating
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CN110474732A (en
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白伟
高雪娟
邢艳萍
艾托尼
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • 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
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • 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

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides an indicating method, a device and a base station of a Modulation and Coding Strategy (MCS) table, wherein the indicating method of the Modulation and Coding Strategy (MCS) table comprises the following steps: an MCS table indication field is defined in Downlink Control Information (DCI) to form a Physical Downlink Control Channel (PDCCH), the MCS table indication field is used for indicating a target MCS table, and the target MCS table belongs to a first type table or a second type table; and transmitting the formed PDCCH to a terminal. In the scheme, an MCS table indication field is defined in Downlink Control Information (DCI) to form a Physical Downlink Control Channel (PDCCH), wherein the MCS table indication field is used for indicating a target MCS table, and the target MCS table belongs to a first type table or a second type table; transmitting the formed PDCCH to a terminal; therefore, the aim that the base station can dynamically indicate the MCS table when various services such as eMBB, URLLC and the like exist is achieved.

Description

Indication method and device of modulation and coding strategy MCS table and base station
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for indicating a modulation and coding strategy MCS table, and a base station.
Background
With the development of mobile communication service demand, many organizations such as 3GPP are beginning to research New wireless communication systems (i.e. 5G NR, 5 Generation New RAT, fifth Generation New radio access technology) for future mobile communication systems. In a 5G NR system, an important requirement is low-delay and high-reliability communication, and transmission schemes such as ultra-high-reliability ultra-low-delay communication URLLC (universal resource reservation control) and the like appear.
For URLLC traffic, in the NR standard, 3 modulation and coding strategy MCS tables have been defined, including 64 quadrature amplitude modulation, QAM, 256QAM, 10-5The MCS table corresponding to the target block error rate BLER may also define the 4 th MCS table-10-1And the MCS table corresponding to the target BLER. For a certain terminal UE, enhanced mobile broadband eMBB service and URLLC service may be supported, and meanwhile, URLLC service may be multipleEach corresponding to a different target BLER; for a URLLC service of a certain UE, the target BLER corresponding to the initial transmission may be 10-1The target BLER for retransmission is 10-5. In the above cases, the base station is required to explicitly indicate to which specific MCS table the MCS value index indicated in the physical downlink control channel PDCCH belongs.
Currently, in NR eMBB, for the indication of MCS table, the related technical solution is as follows:
in the eMBB, Radio Resource Control (RRC) signaling is used, an element IE named as a modulation and coding strategy Table MCS-Table is arranged in physical downlink shared channel configuration (PDSCH) -configuration signaling, two options of 64QAM and 256QAM are provided, the RRC signaling is sent to the UE through a base station, and the MCS Table used by the UE is indicated to be 64QAM or 256 QAM.
An element mcs-Table of 1 bit in RRC signaling indicates one of two valid values of M1 (representing 64QAM) or M2 (representing 256 QAM). In the latest NR standard, there may be four MCS tables, including N1 (representing 64QAM), N2 (representing 256QAM), N3 (representing URLLC new1, i.e. 10-5MCS table corresponding to target BLER), N4 (representing URLLC new2, i.e., 10)-1MCS table corresponding to target BLER) four valid values, and possibly three, including N1 (representing 64QAM), N2 (representing 256QAM), N3 (representing URLLC new, i.e., 10-5MCS table corresponding to the target BLER) three valid values. Wherein N1 and N2 are 10 for target BLER in eMBB-1Table (2).
However, when there are a plurality of MCS tables, such as 2 eMBB MCS tables and 1-2 URLLC MCS tables, the base station in the prior art cannot dynamically indicate which MCS table among the plurality of MCS tables. Particularly, 1-2 MCS tables are newly appeared in the 5G NR, and no indication method is provided for the 1-2 MCS tables at present.
Disclosure of Invention
The invention aims to provide a method and a device for indicating a Modulation and Coding Strategy (MCS) table and a base station, and solves the problem that the base station cannot dynamically indicate a plurality of MCS tables in the prior art.
In order to solve the above technical problem, an embodiment of the present invention provides a method for indicating a modulation and coding strategy MCS table, including:
an MCS table indication field is defined in Downlink Control Information (DCI) to form a Physical Downlink Control Channel (PDCCH), the MCS table indication field is used for indicating a target MCS table, and the target MCS table belongs to a first type table or a second type table;
and transmitting the formed PDCCH to a terminal.
Optionally, the first type table is an MCS table for enhancing a mobile broadband eMBB service; and the second type of table is an MCS table of the ultra-high reliable ultra-low delay communication URLLC service.
Optionally, the step of defining the MCS table indication field in the downlink control information DCI includes:
defining at least 1 bit in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or
And the target MCS table is used for indicating the terminal to adopt a new field indication in the RRC signaling, and the target MCS table belongs to a second type table.
Optionally, before defining the MCS table indication field in the downlink control information DCI, the indication method further includes:
adding a field in the RRC signaling for indicating a first MCS table or a second MCS table of a second type table;
wherein, the first MCS table of the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table of the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table of the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
Optionally, the step of defining the MCS table indication field in the downlink control information DCI includes:
defining at least 1 bit in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or
The method is used for indicating the terminal to adopt a target MCS table, the target MCS table belongs to a second type table, and the second type table only comprises one table.
Optionally, the step of defining the MCS table indication field in the downlink control information DCI includes:
defining at least 2 bits in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a second type table; or
The target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in a second type table;
wherein, the first MCS table in the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
Optionally, the step of defining the MCS table indication field in the downlink control information DCI includes:
defining at least 2 bits in Downlink Control Information (DCI); the method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a first type table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a second MCS table in a first type table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a second type table; or
The target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in a second type table;
wherein a first MCS table in the first table is a 64QAM MCS table, a second MCS table in the first table is a 256QAM MCS table, and the second table isThe first MCS table in (1) is 10 in the ultra-high reliable ultra-low delay communication URLLC service-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
Optionally, the defined bits belong to a bandwidth part indication BWP indicator field, a Frequency-domain resource allocation Frequency-domain RA field, a Time-domain resource allocation Time-domain RA field, a physical resource block bundling size PRB bundling size field, a Modulation coding scheme Modulation and coding scheme field, a hybrid automatic retransmission process number HARQ process number field, a physical uplink control channel resource indication PUCCH resource indicator field, a physical downlink shared channel to hybrid automatic retransmission feedback indication PDSCH-to-HARQ feedback indicator field, a transmission configuration indication TCI field, a demodulation reference signal sequence initialization DMRS sequence initiation indication field, or a new field in DCI.
The embodiment of the invention also provides a base station, which comprises a memory, a processor, a transceiver and a computer program which is stored on the memory and can run on the processor; the processor implements the following steps when executing the program:
an MCS table indication field is defined in Downlink Control Information (DCI) to form a Physical Downlink Control Channel (PDCCH), the MCS table indication field is used for indicating a target MCS table, and the target MCS table belongs to a first type table or a second type table;
and transmitting the formed PDCCH to a terminal through the transceiver.
Optionally, the first type table is an MCS table for enhancing a mobile broadband eMBB service; and the second type of table is an MCS table of the ultra-high reliable ultra-low delay communication URLLC service.
Optionally, the processor is specifically configured to:
defining at least 1 bit in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or
And the target MCS table is used for indicating the terminal to adopt a new field indication in the RRC signaling, and the target MCS table belongs to a second type table.
Optionally, the processor is further configured to:
before an MCS table indication field is defined in downlink control information DCI, adding a field in an RRC signaling for indicating a first MCS table or a second MCS table of a second type table;
wherein, the first MCS table of the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table of the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table of the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
Optionally, the processor is specifically configured to:
defining at least 1 bit in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or
The method is used for indicating the terminal to adopt a target MCS table, the target MCS table belongs to a second type table, and the second type table only comprises one table.
Optionally, the processor is specifically configured to:
defining at least 2 bits in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a second type table; or
The target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in the second type table;
wherein, the first MCS table in the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1Corresponding to target BLERMCS table.
Optionally, the processor is specifically configured to:
defining at least 2 bits in Downlink Control Information (DCI); the method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a first type table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a second MCS table in a first type table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a second type table; or
The target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in a second type table;
wherein, a first MCS table in the first table is a 64 quadrature amplitude modulation QAM MCS table, a second MCS table in the first table is a 256QAM MCS table, and a first MCS table in the second table is a 10 in the ultra-high reliable ultra-low delay communication URLLC service-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
Optionally, the defined bits belong to a bandwidth part indication BWP indicator field, a Frequency-domain resource allocation Frequency-domain RA field, a Time-domain resource allocation Time-domain RA field, a physical resource block bundling size PRB bundling size field, a Modulation coding scheme Modulation and coding scheme field, a hybrid automatic retransmission process number HARQ process number field, a physical uplink control channel resource indication PUCCH resource indicator field, a physical downlink shared channel to hybrid automatic retransmission feedback indication PDSCH-to-HARQ feedback indicator field, a transmission configuration indication TCI field, a demodulation reference signal sequence initialization DMRS sequence initiation indication field, or a new field in DCI.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for indicating the modulation and coding strategy MCS table described above.
The embodiment of the invention also provides an indicating device of the modulation and coding strategy MCS table, which comprises the following steps:
a first processing module, configured to define an MCS table indication field in downlink control information DCI to form a physical downlink control channel PDCCH, where the MCS table indication field is used to indicate a target MCS table, and the target MCS table belongs to a first type table or a second type table;
and the first sending module is used for sending the formed PDCCH to the terminal.
Optionally, the first type table is an MCS table for enhancing a mobile broadband eMBB service; and the second type of table is an MCS table of the ultra-high reliable ultra-low delay communication URLLC service.
Optionally, the first processing includes:
a first processing submodule, configured to define at least 1 bit in downlink control information DCI; the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or
And the target MCS table is used for indicating the terminal to adopt a new field indication in the RRC signaling, and the target MCS table belongs to a second type table.
Optionally, the indicating device further includes:
a second processing module, configured to add a field in an RRC signaling before defining an MCS table indication field in the downlink control information DCI, to indicate a first MCS table or a second MCS table of a second type of table;
wherein, the first MCS table of the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table of the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table of the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
Optionally, the first processing module includes:
a second processing submodule, configured to define at least 1 bit in the downlink control information DCI; the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or
The method is used for indicating the terminal to adopt a target MCS table, the target MCS table belongs to a second type table, and the second type table only comprises one table.
Optionally, the first processing module includes:
a third processing sub-module, configured to define at least 2 bits in the DCI; the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a second type table; or alternatively
The target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in a second type table;
wherein, the first MCS table in the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
Optionally, the first processing module includes:
a fourth processing submodule, configured to define at least 2 bits in the DCI; the method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a first type table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a second MCS table in a first type table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a second type table; or
The target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in a second type table;
wherein a first MCS table in the first table is 64 quadrature amplitude modulationMaking QAM MCS tables, wherein the second MCS table in the first table is a 256QAM MCS table, and the first MCS table in the second table is 10 in the ultra-high reliable ultra-low time delay communication URLLC service-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
Optionally, the defined bits belong to a bandwidth part indication BWP indicator field, a Frequency-domain resource allocation Frequency-domain RA field, a Time-domain resource allocation Time-domain RA field, a physical resource block bundling size PRB bundling size field, a Modulation coding scheme Modulation and coding scheme field, a hybrid automatic retransmission process number HARQ process number field, a physical uplink control channel resource indication PUCCH resource indicator field, a physical downlink shared channel to hybrid automatic retransmission feedback indication PDSCH-to-HARQ feedback indicator field, a transmission configuration indication TCI field, a demodulation reference signal sequence initialization DMRS sequence initiation indication field, or a new field in DCI.
The technical scheme of the invention has the following beneficial effects:
in the above scheme, the method for indicating the modulation and coding strategy MCS table forms a physical downlink control channel PDCCH by defining an MCS table indication field in downlink control information DCI, where the MCS table indication field is used to indicate a target MCS table, and the target MCS table belongs to a first type table or a second type table; transmitting the formed PDCCH to a terminal; therefore, the aim that the base station can dynamically indicate the MCS table when various services such as eMBB, URLLC and the like exist is achieved.
Drawings
FIG. 1 is a flowchart illustrating a method for indicating a modulation and coding strategy MCS table according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a base station according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an indicating apparatus of a modulation and coding strategy MCS table according to an embodiment of the present invention.
Detailed Description
To make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The present invention provides a method for indicating a modulation and coding strategy MCS table, aiming at the problem that a base station in the prior art cannot dynamically indicate the MCS table for multiple services, as shown in fig. 1, comprising:
step 11: an MCS table indication field is defined in Downlink Control Information (DCI) to form a Physical Downlink Control Channel (PDCCH), the MCS table indication field is used for indicating a target MCS table, and the target MCS table belongs to a first type table or a second type table;
step 12: and transmitting the formed PDCCH to a terminal.
The method for indicating the modulation and coding strategy MCS form provided by the embodiment of the invention forms a physical downlink control channel PDCCH by defining an MCS form indication field in downlink control information DCI, wherein the MCS form indication field is used for indicating a target MCS form, and the target MCS form belongs to a first type form or a second type form; transmitting the formed PDCCH to a terminal; therefore, the aim that the base station can dynamically indicate the MCS table when various services such as eMBB, URLLC and the like exist is achieved.
The first type table can be an MCS table for enhancing mobile broadband eMBB service; the second type of table can be an MCS table of the URLLC service of the ultra-high reliable ultra-low time delay communication.
In the embodiment of the present invention, the following specific implementation manners are provided for the operation of defining the MCS table indication field in the downlink control information DCI, but not limited thereto:
first, the step of defining the MCS table indication field in the downlink control information DCI includes: defining at least 1 bit in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or a target MCS table used for indicating the terminal to adopt a new field indication in the RRC signaling, wherein the target MCS table belongs to the second type table.
Further, an MCS table indicator is defined in the downlink control information DCIBefore the paragraph, the indication method further comprises: adding a field in the RRC signaling for indicating a first MCS table or a second MCS table of a second type table; wherein, the first MCS table of the second table is 10 in the URLLC service of the ultra-high reliable ultra-low time delay communication-5The second MCS table of the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table of the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
Secondly, the step of defining the MCS table indication field in the downlink control information DCI comprises: defining at least 1 bit in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, the target MCS table belongs to a second type table, and the second type table only comprises one table.
In the case of indicating the terminal to use the target MCS table, it can be understood that the terminal uses the second type table (the second type table has only one table, and thus no additional index is needed), or it can be understood that the terminal directly uses the MCS table index of the target MCS table (i.e. which table is used is directly indicated).
Thirdly, the step of defining the MCS table indication field in the downlink control information DCI includes: defining at least 2 bits in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a first MCS table in the second type table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in the second type table;
wherein, the first MCS table in the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
In the case of indicating the terminal to use the target MCS table, it can be understood that the indicated MCS table index is directly the target MCS table (i.e. directly indicates which table is used).
Fourthly, the step of defining the MCS table indication field in the downlink control information DCI includes: defining at least 2 bits in Downlink Control Information (DCI); the method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a first type table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in the first type table; or alternatively
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a second type table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in the second type table;
wherein, a first MCS table in the first table is a 64 quadrature amplitude modulation QAM MCS table, a second MCS table in the first table is a 256QAM MCS table, and a first MCS table in the second table is a 10 in the ultra-high reliable ultra-low delay communication URLLC service-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
In the case of indicating the terminal to use the target MCS table, it can be understood that the indicated MCS table index is directly the target MCS table (i.e. directly indicates which table is used).
In the above four specific implementations, the defined bits may belong to a bandwidth part indication BWP indicator field, a Frequency-domain RA field, a Time-domain RA field, a physical resource block bundling size field, a Modulation and coding scheme field, a HARQ process number field, a PUCCH resource indicator field, a PDSCH-to-HARQ feedback indication field from a physical downlink shared channel to a hybrid automatic retransmission feedback, a transmission configuration indication TCI field, a demodulation reference signal sequence initialization DMRS sequence initiation indication field, or a new field in DCI.
The method for indicating the modulation and coding strategy MCS table provided by the embodiment of the present invention is further described below.
To solve the above technical problem, an embodiment of the present invention provides a method for indicating a modulation and coding strategy MCS table, including: the transmitting end (base station) transmits a PDCCH to the receiving end (terminal) for indicating one of various MCS tables (indicating target MCS table), wherein the various MCS tables comprise MCS tables (first type table) of the first type service and MCS tables (second type table) of the second type service.
The first type of service may be an eMBB service, and the second type of service may be a URLLC service.
Seven specific implementation manners are given below for the scheme provided by the embodiment of the present invention, but not limited thereto.
The first method is as follows: in the field of the current DCI (the existing field of the DCI), at least 1 bit is selected for indicating whether an MCS Table (N1-64QAM or N2-256QAM) indicated by an element MCS-Table in RRC signaling or an MCS Table of a URLLC service is used, wherein the MCS Table of the URLLC service only supports one type, namely, the MCS Table corresponds to 10 types of the services-5The channel quality of the target BLER indicates the MCS table of the CQI (N3).
Wherein, the selected bits may belong to a bandwidth part indication BWP indicator field, a Frequency domain resource allocation Frequency-domain RA field, a Time domain resource allocation Time-domain RA field, a physical resource block bundling size field, a Modulation coding scheme Modulation and coding scheme field, a hybrid automatic retransmission process number HARQ process number field, a physical uplink control channel resource indication PUCCH resource indicator field, a physical downlink shared channel to hybrid automatic retransmission feedback indication PDSCH-to-HARQ feedback indicator field, a transmission configuration indication TCI field, a demodulation reference signal sequence initialization DMRS sequence initiation indication field, and the like;
when 1 bit is selected, the most significant weighted bit MSB bit (the most significant bit) is typically used.
Mode one is specifically directed to the NR StandardThe MCS table has three conditions, and the MCS table specifically comprises an N1-64QAM table, an N2-256QAM table and a corresponding 10 in URLLC service-5The channel quality of the target BLER indicates the MCS table of the CQI (N3).
The selected content carried by at least 1 bit can be indexed to the element MCS-Table, or can be directly used as an MCS Table index to be indexed to an MCS Table of the URLLC service.
The second method comprises the following steps: in a field (an existing field of the DCI) of the current DCI, at least 2 bits are selected to indicate whether an MCS Table (N1-64QAM or N2-256QAM) indicated by an element MCS-Table in RRC signaling, namely N1 or N2, an MCS Table I (a first MCS Table of a second type of tables) using URLLC service, namely N3, or an MCS Table II (a second MCS Table of the second type of tables) using URLLC service, namely N4.
Wherein, the selected bits may belong to a BWP indicator field, a Time-domain RA field, a HARQ process number field, a TCI field, and the like;
when 2 bits are selected, two bits of the MSB (the highest two bits, i.e., the bit of the highest weighted bit ranked first and the bit of the second highest weighted bit ranked) are typically used.
The second mode specifically aims at the condition that four MCS tables exist in the NR standard, and the MCS tables specifically comprise corresponding 10 in N1-64QAM tables, N2-256QAM tables and URLLC services-5MCS table (N3) of channel quality indicator CQI for target BLER and corresponding to 10 in URLLC service-1The channel quality of the target BLER indicates the MCS table of the CQI (N4).
The selected content carried by at least 2 bits can be indexed to the element MCS-Table, or can be directly used as an MCS Table index to be indexed to an MCS Table one of the URLLC service or to be indexed to an MCS Table two of the URLLC service.
The third method comprises the following steps: at least 2 bits are selected from the field of the current DCI (the existing field of the DCI), and the indication is that the first MCS table (64QAM) of the first type table, namely N1, the second MCS table (256QAM) of the first type table, namely N2, the MCS table I of the URLLC service (the first MCS table of the second type table), namely N3, or the MCS table II of the URLLC service (the second MCS table of the second type table), namely N4.
Wherein, the selected bits may belong to a BWP indicator field, a Time-domain RA field, a HARQ process number field, a TCI field, and the like;
when 2 bits are selected, two bits of the MSB (the highest two bits, i.e., the bit of the highest weighted bit ranked first and the bit of the second highest weighted bit ranked) are typically used.
The third mode specifically aims at the condition that four MCS tables exist in the NR standard, and the MCS tables specifically comprise corresponding 10 in N1-64QAM tables, N2-256QAM tables and URLLC services-5MCS table (N3) of channel quality indicator CQI for target BLER and corresponding to 10 in URLLC service-1The channel quality of the target BLER indicates the MCS table of the CQI (N4).
The selected content carried by at least 2 bits can be directly used as an MCS table index to an N1-64QAM table, an N2-256QAM table, an MCS table one of URLLC service, or an MCS table two of URLLC service.
The method is as follows: an MCS Table indication field is added in the current DCI, and is at least a 1-bit field, and is used for indicating whether an MCS Table (N1-64QAM or N2-256QAM) indicated by an element MCS-Table in RRC signaling or an MCS Table of a URLLC service is used, wherein the MCS Table of the URLLC service only supports one type, namely the MCS Table corresponds to 10 bits-5The channel quality of the target BLER indicates the MCS table of the CQI (N3).
The fourth mode specifically aims at the condition that there are three MCS tables in the NR standard, and the MCS tables specifically include N1-64QAM tables, N2-256QAM tables and corresponding 10 in URLLC service-5The channel quality of the target BLER indicates the MCS table of the CQI (N3).
The newly added content loaded by at least 1 bit can be indexed to the element MCS-Table, and can also be directly used as an MCS Table index to be indexed to an MCS Table of the URLLC service.
The fifth mode is as follows: an MCS Table indication field added in the current DCI is at least a 2-bit field, and is used for indicating whether an MCS Table (64QAM or 256QAM), i.e., N1 or N2, indicated by an element MCS-Table in RRC signaling is used, whether an MCS Table one (a first MCS Table of a second type Table) of a URLLC service is used, i.e., N3, or whether an MCS Table two (a first MCS Table of the second type Table) of the URLLC service is used, i.e., N4.
The fifth mode specifically aims at the condition that four MCS tables exist in the NR standard, and the MCS tables specifically comprise corresponding 10 in N1-64QAM tables, N2-256QAM tables and URLLC services-5MCS table (N3) of channel quality indicator CQI for target BLER and corresponding to 10 in URLLC service-1The channel quality of the target BLER indicates the MCS table of the CQI (N4).
The newly added content loaded by at least 2 bits can be indexed to an element MCS-Table, or can be directly used as an MCS Table index to be indexed to an MCS Table I of the URLLC service, or to be indexed to an MCS Table II of the URLLC service.
The method six: an MCS table indication field added in the current DCI is an at least 2-bit field for indicating whether a first MCS table (64QAM) of the first type table, i.e., N1, a second MCS table (256QAM) of the first type table, i.e., N2, an MCS table of a URLLC service, i.e., N3 (the first MCS table of the second type table), or an MCS table of a URLLC service, i.e., N4 (the second MCS table of the second type table) is used.
The sixth mode specifically aims at the condition that there are four MCS tables in the NR standard, and the MCS tables specifically include N1-64QAM tables, N2-256QAM tables, and 10 corresponding to URLLC services-5MCS table (N3) of channel quality indicator CQI for target BLER and corresponding to 10 in URLLC service-1The channel quality of the target BLER indicates the MCS table of the CQI (N4).
The newly added content loaded by at least 2 bits can be directly used as an MCS table index to be indexed to an N1-64QAM table, an N2-256QAM table, an MCS table I of URLLC service, or an MCS table II of URLLC service.
The method is as follows: an MCS Table indication field (bits are selected to be defined or a field is newly added to be defined in an existing field of the DCI) is defined in the current DCI, and the field is at least a 1-bit field and is used for indicating whether the MCS (64QAM or 256QAM), namely N1 or N2, is indicated by an element MCS-Table in RRC signaling or the MCS Table of URLLC service, namely N3 or N4, is indicated by a newly added field in RRC signaling.
Wherein, an RRC signaling (specifically, a PDSCH-config signaling configured for a physical downlink shared channel or a PUSCH-config signaling configured for a physical uplink shared channel) is required (an element similar to an MCS-Table is newly added) to indicate whether the MCS Table of the URLLC service is an MCS Table i.e. N3 or an MCS Table ii of the URLLC service is N4.
The bits selected in the DCI existing field may belong to a BWP indicator field, a Time-domain RA field, an HARQ process number field, a TCI field, and the like;
when 1 bit is selected, the most significant weighted bit MSB bit (the most significant bit) is typically used.
The seventh mode specifically aims at the condition that there are four MCS tables in the NR standard, and the MCS tables specifically include N1-64QAM tables, N2-256QAM tables, and 10 corresponding to URLLC services-5MCS table (N3) of channel quality indicator CQI for target BLER and corresponding to 10 in URLLC service-1The channel quality of the target BLER indicates the MCS table of the CQI (N4).
The selected content carried by at least 1 bit can be indexed to an element mcs-Table (the element mcs-Table is used for indicating N1 or N2), and can also be indexed to an added field in RRC signaling (the added field is used for indicating N3 or N4).
The first embodiment will be described below by way of example.
(1) A base station sends a PDCCH to UE for scheduling PDSCH or PUSCH data transmission;
(2) in the field of the current DCI, the HARQ process number field is selected, then 1 bit of the MSB thereof is selected, and the remaining 3 bits are still used to indicate the HARQ process number.
(3) The selected bit may be "0" and is used to indicate that the terminal uses the MCS Table indicated in the element MCS-Table (that is, the content carried by the element MCS-Table is used as an MCS Table index), that is, one of 64QAM or 256QAM, specifically, which one is indicated, and the PDSCH-config signaling may be configured by the physical downlink shared channel or the element IE named MCS-Table in the PUSCH-config may be configured by the physical uplink shared channel to perform semi-static indication.
(4) The selected bit may also be set to "1" to indicate that the terminal uses the MCS table of the URLLC service, where the MCS table of the URLLC service is 10-5And MCS table corresponding to CQI of the target BLER.
(5) The UE can know an accurate MCS value from the MCS table and the MCS index when detecting the MCS index (MCS value index) in the PDCCH based on the obtained MCS table.
The UE may agree with the base station in advance in which field to obtain the MCS table index, and the UE may directly obtain the MCS table index after receiving the PDCCH, but the invention is not limited thereto.
As can be seen from the above, the embodiment of the present invention provides a method for a base station to dynamically indicate an MCS table when multiple services exist, such as eMBB and URLLC: the sending end sends a PDCCH to the receiving end, which is used for indicating one of various MCS tables, including the MCS table of the first type service and the MCS table of the second type service; therefore, the aim of dynamically indicating the MCS table aiming at various services by the base station is fulfilled.
The embodiment of the invention also provides a base station, which comprises a memory, a processor, a transceiver and a computer program which is stored on the memory and can run on the processor; the processor implements the following steps when executing the program:
an MCS table indication field is defined in Downlink Control Information (DCI) to form a Physical Downlink Control Channel (PDCCH), the MCS table indication field is used for indicating a target MCS table, and the target MCS table belongs to a first type table or a second type table;
and transmitting the formed PDCCH to a terminal through the transceiver.
The base station provided by the embodiment of the invention forms a physical downlink control channel PDCCH by defining an MCS table indication field in downlink control information DCI, wherein the MCS table indication field is used for indicating a target MCS table, and the target MCS table belongs to a first type table or a second type table; transmitting the formed PDCCH to a terminal; therefore, the aim that the base station can dynamically indicate the MCS table when various services such as eMBB, URLLC and the like exist is achieved.
Specifically, as shown in fig. 2, the base station of the embodiment of the present invention includes:
a processor 21; and a memory 23 connected to the processor 21 through the bus interface 22, wherein the memory 23 is used for storing programs and data used by the processor 21 in executing operations, and when the processor 21 calls and executes the programs and data stored in the memory 23, the following processes are executed:
an MCS table indication field is defined in Downlink Control Information (DCI) to form a Physical Downlink Control Channel (PDCCH), the MCS table indication field is used for indicating a target MCS table, and the target MCS table belongs to a first type table or a second type table;
the formed PDCCH is transmitted to the terminal through the transceiver 24.
Wherein a transceiver 24 is connected to the bus interface 22 for receiving and transmitting data under control of the processor 21.
It should be noted that in fig. 2, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 21 and various circuits of memory represented by memory 23 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 24 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 21 is responsible for managing the bus architecture and general processing, and the memory 23 may store data used by the processor 21 in performing operations.
Those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be performed by hardware, or may be instructed to be performed by associated hardware by a computer program that includes instructions for performing some or all of the steps of the above methods; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.
The first type table can be an MCS table for enhancing mobile broadband eMBB service; the second type of table can be an MCS table of the URLLC service of the ultra-high reliable ultra-low time delay communication.
In the embodiment of the present invention, the following specific implementation manners are provided for the operation of defining the MCS table indication field in the downlink control information DCI, but not limited thereto:
first, the processor is specifically configured to: defining at least 1 bit in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or a target MCS table indicated by a new field added in RRC signaling and used for indicating the terminal, wherein the target MCS table belongs to the second type table.
Further, the processor is further configured to: before an MCS table indication field is defined in downlink control information DCI, adding a field in an RRC signaling for indicating a first MCS table or a second MCS table of a second type table; wherein, the first MCS table of the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table of the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table of the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
Second, the processor is specifically configured to: defining at least 1 bit in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, the target MCS table belongs to a second type table, and the second type table only comprises one table.
Thirdly, the processor is specifically configured to: defining at least 2 bits in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a first MCS table in the second type table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in the second type table;
wherein, the first MCS table in the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1MC corresponding to target BLERAnd (5) an S table.
Fourthly, the processor is specifically configured to: defining at least 2 bits in Downlink Control Information (DCI); the method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a first type table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in the first type table; or
The target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a first MCS table in the second type table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in the second type table;
wherein, a first MCS table in the first table is a 64 quadrature amplitude modulation QAM MCS table, a second MCS table in the first table is a 256QAM MCS table, and a first MCS table in the second table is a 10 in the ultra-high reliable ultra-low delay communication URLLC service-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
In the above four specific implementations, the defined bits may belong to a bandwidth part indication BWP indicator field, a Frequency-domain RA field, a Time-domain RA field, a physical resource block bundling size field, a Modulation and coding scheme field, a HARQ process number field, a PUCCH resource indicator field, a PDSCH-to-HARQ feedback indication field from a physical downlink shared channel to a hybrid automatic retransmission feedback, a transmission configuration indication TCI field, a demodulation reference signal sequence initialization DMRS sequence initiation indication field, or a new field in DCI.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the program, when executed by a processor, implements the steps of the above method for indicating a modulation and coding strategy MCS table.
The implementation embodiments of the indication method of the modulation and coding strategy MCS table are all applicable to the embodiment of the computer-readable storage medium, and the same technical effects can be achieved.
An embodiment of the present invention further provides an apparatus for indicating a modulation and coding strategy MCS table, as shown in fig. 3, including:
a first processing module 31, configured to define an MCS table indication field in the downlink control information DCI to form a physical downlink control channel PDCCH, where the MCS table indication field is used to indicate a target MCS table, and the target MCS table belongs to a first type table or a second type table;
and a first sending module 32, configured to send the formed PDCCH to the terminal.
The indicating device of the modulation and coding strategy MCS table provided by the embodiment of the invention forms a physical downlink control channel PDCCH by defining an MCS table indicating field in downlink control information DCI, wherein the MCS table indicating field is used for indicating a target MCS table, and the target MCS table belongs to a first type table or a second type table; transmitting the formed PDCCH to a terminal; therefore, the aim that the base station can dynamically indicate the MCS table when various services such as eMBB, URLLC and the like exist is achieved.
The first type table can be an MCS table for enhancing mobile broadband eMBB service; the second type of table can be an MCS table of the URLLC service of the ultra-high reliable ultra-low time delay communication.
In the embodiment of the present invention, the following specific implementation manners are provided for the operation of defining the MCS table indication field in the downlink control information DCI, but not limited thereto:
first, the first process includes: a first processing submodule, configured to define at least 1 bit in downlink control information DCI; the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or a target MCS table used for indicating the terminal to adopt a new field indication in the RRC signaling, wherein the target MCS table belongs to the second type table.
Further, the indication device further comprises: a second processing module forBefore an MCS table indication field is defined in downlink control information DCI, adding a field in an RRC signaling for indicating a first MCS table or a second MCS table of a second type table; wherein, the first MCS table of the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table of the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table of the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
Second, the first processing module comprises: a second processing submodule, configured to define at least 1 bit in the downlink control information DCI; the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in a radio resource control RRC signaling, and belongs to a first type Table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, the target MCS table belongs to a second type table, and the second type table only comprises one table.
Third, the first processing module includes: a third processing sub-module, configured to define at least 2 bits in the DCI; the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in a radio resource control RRC signaling, and belongs to a first type Table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a first MCS table in the second type table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in the second type table;
wherein, the first MCS table in the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
Fourth, the first processing module includes: a fourth processing submodule, configured to define at least 2 bits in the DCI; the method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a first type table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in the first type table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a second type table; or the target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in the second type table;
wherein, a first MCS table in the first table is a 64 quadrature amplitude modulation QAM MCS table, a second MCS table in the first table is a 256QAM MCS table, and a first MCS table in the second table is a 10 in the ultra-high reliable ultra-low delay communication URLLC service-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
In the above four specific implementations, the defined bits may belong to a bandwidth part indication BWP indicator field, a Frequency-domain RA field, a Time-domain RA field, a physical resource block bundling size field, a Modulation and coding scheme field, a HARQ process number field, a PUCCH resource indicator field, a PDSCH-to-HARQ feedback indication field from a physical downlink shared channel to a hybrid automatic retransmission feedback, a transmission configuration indication TCI field, a demodulation reference signal sequence initialization DMRS sequence initiation indication field, or a new field in DCI.
The implementation embodiments of the method for indicating the modulation and coding strategy MCS table are all applied to the embodiment of the indicating apparatus for the modulation and coding strategy MCS table, and the same technical effects can be achieved.
It should be noted that many of the functional components described in this specification are referred to as modules/sub-modules in order to more particularly emphasize their implementation independence.
In embodiments of the invention, the modules/sub-modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be constructed as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.
Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within the modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices, and may exist, at least partially, merely as electronic signals on a system or network.
When a module can be implemented by software, considering the level of existing hardware technology, a module implemented by software may build a corresponding hardware circuit to implement a corresponding function, without considering cost, and the hardware circuit may include a conventional Very Large Scale Integration (VLSI) circuit or a gate array and an existing semiconductor such as a logic chip, a transistor, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (19)

1. A method for indicating a Modulation and Coding Strategy (MCS) table, comprising:
an MCS table indication field is defined in Downlink Control Information (DCI) to form a Physical Downlink Control Channel (PDCCH), the MCS table indication field is used for indicating a target MCS table, and the target MCS table belongs to a first type table or a second type table;
and transmitting the formed PDCCH to a terminal.
2. The indication method of claim 1, wherein the first type table is an MCS table for enhanced mobile broadband, eMBB, services; and the second type of table is an MCS table of the ultra-high reliable ultra-low delay communication URLLC service.
3. The indication method according to claim 1, wherein the step of defining an MCS table indication field in the downlink control information, DCI, comprises:
defining at least 1 bit in Downlink Control Information (DCI); a target MCS Table used for indicating a terminal to adopt an element MCS-Table indication in a radio resource control RRC signaling, wherein the target MCS Table belongs to a first type Table; or
And the target MCS table is used for indicating the terminal to adopt a new field indication in the RRC signaling, and the target MCS table belongs to a second type table.
4. The indication method according to claim 3, wherein before defining the MCS table indication field in the downlink control information, DCI, the indication method further comprises:
adding a field in the RRC signaling for indicating a first MCS table or a second MCS table of a second type table;
wherein, the first MCS table of the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table of the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table of the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
5. The indication method according to claim 1, wherein the step of defining an MCS table indication field in the downlink control information, DCI, comprises:
defining at least 1 bit in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or
The method is used for indicating the terminal to adopt a target MCS table, the target MCS table belongs to a second type table, and the second type table only comprises one table.
6. The indication method according to claim 1, wherein the step of defining an MCS table indication field in the downlink control information, DCI, comprises:
defining at least 2 bits in Downlink Control Information (DCI); a target MCS Table used for indicating a terminal to adopt an element MCS-Table indication in a radio resource control RRC signaling, wherein the target MCS Table belongs to a first type Table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a second type table; or
The target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in a second type table;
wherein, the first MCS table in the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
7. The indication method according to claim 1, wherein the step of defining an MCS table indication field in the downlink control information, DCI, comprises:
defining at least 2 bits in Downlink Control Information (DCI); the method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a first type table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a second MCS table in a first type table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a second type table; or
The target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in a second type table;
wherein, a first MCS table in the first table is a 64 quadrature amplitude modulation QAM MCS table, a second MCS table in the first table is a 256QAM MCS table, and a first MCS table in the second table is a 10 in the ultra-high reliable ultra-low delay communication URLLC service-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
8. The indication method according to claim 3, 5, 6 or 7, wherein the defined bits belong to a bandwidth part indication (BWP) indicator field, a Frequency domain resource allocation (Frequency-domain RA) field, a Time domain resource allocation (Time-domain RA) field, a physical resource block bundling size (PRB) size field, a Modulation and coding scheme (Modulation and coding scheme) field, a hybrid automatic repeat process number (HARQ) number field, a physical uplink control channel resource indication (PUCCH) resource indicator field, a physical downlink shared channel to hybrid automatic repeat feedback indication (PDSCH-to-HARQ feedback) field, a Transmission Configuration Indication (TCI) field, a demodulation reference signal sequence initialization (DMRS) sequence initialization field, or a new addition field in DCI.
9. A base station comprising a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; wherein the processor implements the following steps when executing the program:
an MCS table indication field is defined in Downlink Control Information (DCI) to form a Physical Downlink Control Channel (PDCCH), the MCS table indication field is used for indicating a target MCS table, and the target MCS table belongs to a first type table or a second type table;
and transmitting the formed PDCCH to a terminal through the transceiver.
10. The base station of claim 9, wherein the first type table is an MCS table for enhanced mobile broadband, eMBB, services; and the second type of table is an MCS table of the ultra-high reliable ultra-low delay communication URLLC service.
11. The base station of claim 9, wherein the processor is specifically configured to:
defining at least 1 bit in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or
And the target MCS table is used for indicating the terminal to adopt a new field indication in the RRC signaling, and the target MCS table belongs to a second type table.
12. The base station of claim 11, wherein the processor is further configured to:
before an MCS table indication field is defined in downlink control information DCI, adding a field in an RRC signaling for indicating a first MCS table or a second MCS table of a second type table;
wherein, the first MCS table of the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table of the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table of the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
13. The base station of claim 9, wherein the processor is specifically configured to:
defining at least 1 bit in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or
The method is used for indicating the terminal to adopt a target MCS table, the target MCS table belongs to a second type table, and the second type table only comprises one table.
14. The base station of claim 9, wherein the processor is specifically configured to:
defining at least 2 bits in Downlink Control Information (DCI); the target MCS Table is used for indicating the terminal to adopt an element MCS-Table indicated in Radio Resource Control (RRC) signaling, and belongs to a first type of Table; or
The target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a first MCS table in the second type table; or
The target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in a second type table;
wherein, the first MCS table in the second table is 10 in the URLLC service of the ultra-high reliable ultra-low delay communication-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
15. The base station of claim 9, wherein the processor is specifically configured to:
defining at least 2 bits in Downlink Control Information (DCI); the method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a first type table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a second MCS table in a first type table; or
The method comprises the steps of indicating a terminal to adopt a target MCS table, wherein the target MCS table is a first MCS table in a second type table; or
The target MCS table is used for indicating the terminal to adopt the target MCS table, and the target MCS table is a second MCS table in a second type table;
wherein a first MCS table in the first table is a 64QAM MCS table, a second MCS table in the first table is a 256QAM MCS table, and the second table isThe first MCS table in (1) is 10 in the ultra-high reliable ultra-low delay communication URLLC service-5The second MCS table in the second type table is the MCS table corresponding to the target block error rate BLER, and the second MCS table in the second type table is 10 in URLLC service-1And MCS table corresponding to the target BLER.
16. The base station according to claim 11, 13, 14 or 15, wherein the defined bits belong to a bandwidth part indication BWP indicator field, a Frequency domain resource allocation Frequency-domain RA field, a Time domain resource allocation Time-domain RA field, a physical resource block bundling size PRB bundling size field, a Modulation coding scheme Modulation and coding scheme field, a hybrid automatic retransmission process number HARQ process number field, a physical uplink control channel resource indication PUCCH resource indicator field, a physical downlink shared channel to hybrid automatic retransmission feedback indication PDSCH-to-HARQ feedback indicator field, a transmission configuration indication TCI field, a demodulation reference signal sequence initialization DMRS sequence initiation field, or a new addition field in DCI.
17. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for indicating a modulation and coding strategy, MCS, table according to any one of claims 1 to 8.
18. An apparatus for indicating a Modulation and Coding Scheme (MCS) table, comprising:
a first processing module, configured to define an MCS table indication field in downlink control information DCI to form a physical downlink control channel PDCCH, where the MCS table indication field is used to indicate a target MCS table, and the target MCS table belongs to a first type table or a second type table;
and the first sending module is used for sending the formed PDCCH to the terminal.
19. The indication apparatus of claim 18, wherein the first type table is an MCS table for enhanced mobile broadband, eMBB, traffic; and the second type of table is an MCS table of the ultra-high reliable ultra-low delay communication URLLC service.
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