Information transmission method, apparatus and device, and storage medium
Provided are an information transmission method, apparatus and device, and a storage medium. The method includes detecting a physical downlink control channel (PDCCH) on multiple consecutive orthogonal frequency-division multiplexing (OFDM) symbols of one or more slots.
1 . An information transmission method, being applied to a terminal and comprising:
detecting a physical downlink control channel (PDCCH) received from a base station on a plurality of consecutive orthogonal frequency-division multiplexing (OFDM) symbols of at least one slot;
wherein detecting the PDCCH on the plurality of consecutive OFDM symbols of the at least one slot comprises:
detecting a PDCCH transmitted in a non-repetitive mapping manner on the plurality of consecutive OFDM symbols of one slot;
wherein for the non-repetitive mapping manner, mapping one PDCCH to a plurality of OFDM symbols comprises one of the following:
modifying a number of resource element groups (REGs) included in one REG bundle to
m
×
N
symb
CORESET
and a number of REGs included in one control channel element (CCE) to
n
×
N
symb
CORESET
,
wherein m ana n are each a positive integer greater than 1;
limiting a CCE aggregation level supported by the one PDCCH such that the one PDCCH occupies an integer number of REG bundles; or
modifying a REG serial number to a frequency domain first.
2 . The method of claim 1 , wherein detecting the PDCCH on the plurality of consecutive OFDM symbols of the at least one slot comprises:
detecting the PDCCH on M consecutive OFDM symbols of N slots, wherein Nis an integer greater than or equal to 1, and M is a positive integer greater than 3.
3 . The method of claim 1 , wherein for the non-repetitive mapping manner, different SCSs support different maximum PDCCH symbol numbers.
4 . The method of claim 1 , wherein for the non-repetitive mapping manner, a value of duration in a CORESET configuration is an integer between 3 and 14.
5 . The method of claim 1 , wherein a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH) scheduled by the PDCCH uses a different SCS from the PDCCH.
6 . The method of claim 1 , wherein the PDCCH carries beam indication information configured to indicate a beam for sending and receiving data.
7 . An information transmission method, being applied to a base station and comprising:
sending a physical downlink control channel (PDCCH) to a terminal on a plurality of consecutive orthogonal frequency-division multiplexing (OFDM) symbols of at least one slot so that the terminal detects the PDCCH;
wherein sending the PDCCH on the plurality of consecutive OFDM symbols of the at least one slot comprises:
mapping the PDCCH to the plurality of consecutive OFDM symbols of one slot in a non-repetitive manner;
wherein for the non-repetitive mapping manner, mapping one PDCCH to a plurality of OFDM symbols comprises one of the following:
modifying a number of resource element groups (REGs) included in one REG bundle to
m
×
N
symb
CORESET
and a number of REGs included in one control channel element (CCE) to
n
×
N
symb
CORESET
,
wherein m and n are each a positive integer greater than 1;
limiting a CCE aggregation level supported by the one PDCCH such that the one PDCCH occupies an integer number of REG bundles; or
modifying a REG serial number to a frequency domain first.
8 . The method of claim 7 , further comprising:
using, by the PDCCH, a default sub-carrier spacing (SCS).
9 . The method of claim 7 , further comprising:
sending, through different PDCCHs, same downlink control information (DCI) to a same terminal by multiple transmission and reception points (TRPs).
10 . The method of claim 9 , wherein sending, through the different PDCCHs, the same DCI to the same terminal by the multiple TRPs comprises one of the following manners:
sending, by different TRPs, the PDCCHs to the same terminal in a time-division multiplexing (TDM) manner; or
sending, by different TRPs, the same DCI to the same terminal through the different PDCCHs in a frequency-division multiplexing (FDM) manner.
11 . An information transmission device, comprising:
at least one processor; and
a memory configured to store at least one program;
wherein when executed by the at least one processor, the at least one program causes the at least one processor to perform the information transmission method of claim 1 .
12 . A non-transitory computer-readable storage medium storing a computer program which, when executed by a processor, performs the information transmission method of claim 1 .
13 . An information transmission device, comprising:
at least one processor; and
a memory configured to store at least one program;
wherein when executed by the at least one processor, the at least one program causes the at least one processor to perform the information transmission method of claim 7 .