SSB transmission indication method and apparatus, terminal, device, and medium
An SSB transmission indication method and apparatus, a terminal, a device, and a medium. The method is applied to a terminal, and the method includes: receiving SSB transmission indication information, where the SSB transmission indication information is used to indicate a candidate time position of an SSB.
1 . A synchronization signal/physical broadcast channel block (SSB) transmission indication method, applied to a terminal and comprising:
receiving SSB transmission indication information, wherein the SSB transmission indication information is used to indicate a candidate time position of an SSB,
wherein the SSB transmission indication information is used to indicate at least one group of candidate time positions, and each group of candidate time positions is used for at least one SSB transmission,
wherein the SSB transmission indication information comprises a bitmap, a value of a bit in the bitmap comprises a first value and/or a second value, the first value indicates that a group of time positions corresponding to the bit is a group of candidate time positions, and the second value indicates that a group of time positions corresponding to the bit is a group of time positions in which SSB transmission is not performed, wherein the first value is 1, and the second value is 0,
wherein each bit in the bitmap corresponds to a quasi co-location index, and each quasi co-location index corresponds to a group of time positions,
wherein the method further comprises:
obtaining a mapping relationship between a random access channel occasion (RO) and a group of candidate time positions based on each group of candidate time positions in the at least one group of candidate time positions;
wherein if an SSB transmission window is configured, each group of candidate time positions indicated by the SSB transmission indication information is limited within the SSB transmission window; if no SSB transmission window is configured, an SSB transmission window is a maximum transmission window specified in a protocol.
2 . The method according to claim 1 , further comprising:
performing, based on downlink transmission information, rate matching on the candidate time position indicated by the SSB transmission indication information.
3 . The method according to claim 1 , further comprising:
for a physical downlink control channel (PDCCH) candidate, if at least one resource element (RE) of the PDCCH candidate overlaps a resource element of a candidate SSB, skipping monitoring the PDCCH candidate, wherein the candidate SSB is an SSB that may be transmitted in the candidate time position indicated by the SSB transmission indication information.
4 . The method according to claim 1 , further comprising:
determining a slot used for physical uplink control channel (PUCCH) repetition transmission, wherein
the slot used for PUCCH repetition transmission comprises N consecutive flexible symbols starting from a first symbol, the N flexible symbols do not overlap the candidate time position indicated by the SSB transmission indication information, and N is a positive integer.
5 . The method according to claim 1 , wherein the mapping relationship is obtained based on an order of quasi co-location indexes corresponding to the groups of candidate time positions.
6 . The method according to claim 1 , wherein
the mapping comprises at least one round of mappings, each round of mappings comprises X1 mappings of a single group of candidate time positions, and X1 is a quantity of SSBs that are in SSBs to be transmitted and that are not quasi co-located mutually.
7 . A synchronization signal/physical broadcast channel block (SSB) transmission indication method, applied to a network device and comprising:
sending SSB transmission indication information, wherein the SSB transmission indication information is used to indicate a candidate time position of an SSB,
wherein the SSB transmission indication information is used to indicate at least one group of candidate time positions, and each group of candidate time positions is used for at least one SSB transmission,
wherein the SSB transmission indication information comprises a bitmap, a value of a bit in the bitmap comprises a first value and/or a second value, the first value indicates that a group of time positions corresponding to the bit is a group of candidate time positions, and the second value indicates that a group of time positions corresponding to the bit is a group of time positions in which SSB transmission is not performed,
wherein each bit in the bitmap corresponds to a quasi co-location index, and each quasi co-location index corresponds to a group of time positions,
wherein there is a mapping relationship between a random access channel occasion (RO) and a group of candidate time positions;
if an SSB transmission window is configured, each group of candidate time positions indicated by the SSB transmission indication information is limited within the SSB transmission window; if no SSB transmission window is configured, an SSB transmission window is a maximum transmission window specified in a protocol.
8 . The method according to claim 7 , wherein the mapping relationship is obtained based on an order of quasi co-location indexes corresponding to the groups of candidate time positions.
9 . The method according to claim 7 , wherein
the mapping comprises at least one round of mappings, each round of mappings comprises X1 mappings of a single group of candidate time positions, and X1 is a quantity of SSBs that are in SSBs to be transmitted and that are not quasi co-located mutually.
10 . A network device, comprising a processor, a memory, and a computer program stored in the memory and used to be executed by the processor, wherein when the computer program is executed by the processor, a following step is implemented:
sending synchronization signal/physical broadcast channel block (SSB) transmission indication information, wherein the SSB transmission indication information is used to indicate a candidate time position of an SSB,
wherein the SSB transmission indication information is used to indicate at least one group of candidate time positions, and each group of candidate time positions is used for at least one SSB transmission,
wherein the SSB transmission indication information comprises a bitmap, a value of a bit in the bitmap comprises a first value and/or a second value, the first value indicates that a group of time positions corresponding to the bit is a group of candidate time positions, and the second value indicates that a group of time positions corresponding to the bit is a group of time positions in which SSB transmission is not performed,
wherein each bit in the bitmap corresponds to a quasi co-location index, and each quasi co-location index corresponds to a group of time positions,
wherein there is a mapping relationship between a random access channel occasion (RO) and a group of candidate time positions;
if an SSB transmission window is configured, each group of candidate time positions indicated by the SSB transmission indication information is limited within the SSB transmission window; if no SSB transmission window is configured, an SSB transmission window is a maximum transmission window specified in a protocol.
11 . The network device according to claim 10 , wherein the mapping relationship is obtained based on an order of quasi co-location indexes corresponding to the groups of candidate time positions.
12 . The network device according to claim 10 , wherein
the mapping comprises at least one round of mappings, each round of mappings comprises X1 mappings of a single group of candidate time positions, and X1 is a quantity of SSBs that are in SSBs to be transmitted and that are not quasi co-located mutually.