System information reception method and apparatus
A system information reception method and apparatus. The method includes a terminal equipment receives a first synchronization signal block (SSB) transmitted by a network device, the first synchronization signal block being transmitted on an unlicensed or shared spectrum/band, and/or a first bit in ssb-SubcarrierOffset and/or ā Ā+5 in a physical broadcast channel payload contained in the first synchronization signal block being used for indicating a QCL relationship between SSBs or being not used for indicating a first parameter; the terminal equipment determines the first parameter (k SSB ) according to the first synchronization signal block; and receives SIB1, associated with the first synchronization signal block, or a second synchronization signal block according to the first parameter.
1 . A system information reception apparatus, configured in a terminal equipment, wherein the apparatus comprises:
a receiver configured to receive a first synchronization signal block (SSB) transmitted by a network device, the first synchronization signal block being transmitted on an unlicensed or shared spectrum/band, and/or a first bit in ssb-SubcarrierOffset and/or ā Ā+ 5 in a physical broadcast channel payload contained in the first synchronization signal block being used for indicating a QCL relationship between SSBs or being not used for indicating a first parameter; and
processor circuitry configured to determine the first parameter according to the first synchronization signal block, the first parameter being used by the terminal equipment to determine a position of a CORESET used for monitoring or receiving PDCCHs, the PDCCHs being used for scheduling PDSCHs carrying SIB1 associated with the first synchronization signal block, or the first parameter being used by the terminal equipment to determine that the first synchronization signal block has no associated SIB1;
the receiver is further configured to receive the SIB1, associated with the first synchronization signal block, or a second synchronization signal block according to the first parameter.
2 . The apparatus according to claim 1 , wherein the first bit is LSB in ssb-SubcarrierOffset.
3 . The apparatus according to claim 1 , wherein that the processor circuitry determines the first parameter comprises that the processor circuitry determines the first parameter according to one of the following methods:
assuming that a value of the first bit is 0 or 1;
assuming that a value of binary bits of the first parameter corresponding to the first bit is 0 or 1;
determining the first parameter according to only other bits than the first bit in ssb-SubcarrierOffset and/or ā Ā+ 5 in the physical broadcast channel payload contained in the first synchronization signal block; and
determining the first parameter according to information carried by the first synchronization signal block other than bits in ssb-SubcarrierOffset and/or ā Ā+ 5 in the physical broadcast channel payload contained in the first synchronization signal block.
4 . The apparatus according to claim 3 , wherein in a case where the processor circuitry assumes that a value of the first bit is 0 or 1 or that a value of binary bits of the first parameter corresponding to the first bit is 0 or 1, that the processor circuitry determines the first parameter further comprises:
the processor circuitry determines whether a value of the first bit is 0 or 1 according to information carried by the first synchronization signal block other than the first bit, or whether a value of binary bits of the first parameter corresponding to the first bit is 0 or 1 according to information carried by the first synchronization signal block other than the first bit.
5 . The apparatus according to claim 1 , wherein:
the processor circuitry is further configured to determine a type of information indicated by the first bit in ā Ā+ 5 and/or ssb-SubcarrierOffset in the physical broadcast channel payload contained in the first synchronization signal block before the processor circuitry determines the first parameter.
6 . The apparatus according to claim 1 , wherein that the receiver receives the SIB1 according to the first parameter comprises:
the receiver determines an offset between the first synchronization signal block and a common resource block (CRB) grid according to the first parameter and a reference subcarrier spacing, and receives the SIB1 associated with the first synchronization signal block according to the offset;
wherein the reference subcarrier spacing is a subcarrier spacing of the first synchronization signal block or the CORESET, or is a predefined subcarrier spacing.
7 . The apparatus according to claim 6 , wherein the receiver further determines the offset between the first synchronization signal block and the common resource block (CRB) grid according to a second factor.
8 . A system information reception apparatus, configured in a terminal equipment, wherein the apparatus comprises:
a receiver configured to receive a first synchronization signal block (SSB) transmitted by a network device; and
processor circuitry configured to
determine a second parameter according to the first synchronization signal block; and
determine a first parameter according to a first factor and the second parameter, the first parameter being used by the terminal equipment to determine a position of a CORESET used for monitoring or receiving PDCCHs, the PDCCHs being used for scheduling PDSCHs carrying SIB1 associated with the first synchronization signal block, or the first parameter being used by the terminal equipment to determine that the first synchronization signal block has no associated SIB1;
the receiver is further configured to receive the SIB1, associated with the first synchronization signal block, or a second synchronization signal block according to the first parameter.
9 . The apparatus according to claim 8 , wherein the first parameter or the second parameter is characterized by k SSB .
10 . The apparatus according to claim 8 , wherein the first synchronization signal block is transmitted on an unlicensed or shared spectrum/band, and/or a first bit in ssb-SubcarrierOffset and/or ā Ā+ 5 in a physical broadcast channel payload contained in the first synchronization signal block is used for indicating a QCL relationship between SSBs or is not used for indicating the second parameter.
11 . The apparatus according to claim 10 , wherein the first bit is LSB in ssb-SubcarrierOffset.
12 . The apparatus according to claim 10 , wherein that the processor circuitry determines the second parameter comprises that the processor circuitry determines the second parameter according to one of the following:
assuming that a value of the first bit is 0 or 1;
assuming that a value of binary bits of the second parameter corresponding to the first bit is 0 or 1;
determining the second parameter according to only other bits than the first bit in ssb-SubcarrierOffset and/or ā Ā+ 5 in the physical broadcast channel payload contained in the first synchronization signal block; and
determining the second parameter according to information carried by the first synchronization signal block other than bits in ssb-SubcarrierOffset and/or ā Ā+ 5 in the physical broadcast channel payload contained in the first synchronization signal block.
13 . The apparatus according to claim 12 , wherein in a case where the processor circuitry assumes that a value of the first bit is 0 or 1 or that a value of binary bits of the second parameter corresponding to the first bit is 0 or 1, that the processor circuitry determines the second parameter further comprises:
the processor circuitry determines whether a value of the first bit is 0 or 1 according to information carried by the first synchronization signal block other than the first bit, or whether a value of binary bits of the second parameter corresponding to the first bit is 0 or 1 according to information carried by the first synchronization signal block other than the first bit.
14 . The apparatus according to claim 12 , wherein:
the processor circuitry is further configured to determine a type of information indicated by the first bit in ā Ā+ 5 and/or ssb-SubcarrierOffset in the physical broadcast channel payload contained in the first synchronization signal block before the processor circuitry determines the second parameter.
15 . The apparatus according to claim 8 , wherein a value of the first factor is ½ N or 2 N , N being the number of the first bits.
16 . The apparatus according to claim 8 , wherein the first parameter is equal to a product of the second parameter and the first factor, or the first parameter is equal to a value obtained by flooring a product of the second parameter and the first factor, or the first parameter is equal to a quotient obtained by dividing the second parameter by the first factor, or the first parameter is equal to a value obtained by flooring a quotient obtained by dividing the second parameter by the first factor.
17 . The apparatus according to claim 8 , wherein that the receiver receives the SIB1 according to the first parameter comprises:
the receiver determines an offset between the first synchronization signal block and a common resource block (CRB) grid according to the first parameter and a reference subcarrier spacing, and receives the SIB1 according to the offset;
wherein the reference subcarrier spacing is a subcarrier spacing of the first synchronization signal block or the CORESET, or is a predefined subcarrier spacing.
18 . The apparatus according to claim 17 , wherein the receiver further determines the offset between the first synchronization signal block and the common resource block (CRB) grid according to a second factor.
19 . A system information reception apparatus, configured in a terminal equipment, wherein the apparatus comprises:
a receiver configured to receive a synchronization signal block (SSB) transmitted by a network device,
at least one bit of at least one of the following indication fields in a physical broadcast channel payload contained in the synchronization signal block being used for indicating a QCL relationship between SSBs:
intraFreqReselection;
subCarrierSpacingCommon;
ā Ā+ 6 ;
pdcch-ConfigSIB1;
ā Ā+ 5 and ssb-SubcarrierOffset.
20 . The apparatus according to claim 19 , wherein in selecting or reselecting a cell, the receiver assumes that intraFreqReselection is set to be notAllowed.