Pairing of synchronization signals for tracking and measurement

1 . A first network node comprising:

a memory; and

at least one processor coupled to the memory, wherein the at least one processor is configured to:

receive, from a second network node, an indication of a first quantity of beams;

receive, from the second network node, bitmap information, wherein the bitmap information includes a first bitmap and a second bitmap, wherein the first bitmap corresponds to a first beam of the first quantity of beams and indicates a first set of times for transmission of a first set of synchronization signal blocks (SSBs) by the second network node in a first direction of the first beam, and wherein the second bitmap corresponds to a second beam of the first quantity of beams and indicates a second set of times for transmission of a second set of SSBs by the second network node in a second direction of the second beam, wherein the bitmap information comprises a third bitmap, and wherein the third bitmap corresponds to the first beam and indicates a third set of times for transmission of a third set of SSBs by the second network node in the first direction of the first beam; and

generate first measurement information based on the bitmap information.

2 . The first network node of claim 1 , wherein the at least one processor is further configured to:

synchronize, based on a center frequency of a physical broadcast channel (PBCH), the first network node with the second network node based on the first measurement information.

3 . The first network node of claim 1 , wherein the first direction of the first beam corresponds to a first transmission configuration indication (TCI) state of the first beam or a first quasi-colocation (QCL) state of the first beam, and wherein the second direction of the second beam corresponds to a second TCI state of the second beam or a second QCL state of the second beam.

4 . The first network node of claim 1 , wherein the bitmap information comprises a first set of bitmaps indicating times for transmission of non-cell-defining SSBs and a second set of bitmaps indicating times for transmission of cell-defining SSBs, and wherein the first set of bitmaps and the second set of bitmaps are different.

5 . The first network node of claim 1 , wherein the at least one processor is further configured to:

receive, from the second network node, a downlink transmission in the first direction, wherein the first direction corresponds to a first reference SSB of the first set of SSBs, and wherein the first reference SSB block is time division multiplexed with the downlink transmission,

wherein the at least one processor is configured to receive the downlink transmission from the second network node within a time period from an end of reception of the first reference SSB, and

wherein the first measurement information includes first measurement information corresponding to the first reference SSB.

6 . The first network node of claim 1 , wherein the at least one processor is further configured to:

receive, from the second network node, activation information, wherein, to generate the first measurement information based on the bitmap information, the at least one processor is configured to generate, based on the activation information, the first measurement information based on the first bitmap,

wherein the activation information comprises system information, radio resource control information, media access control control element (MAC CE) information, or downlink control information.

7 . The first network node of claim 1 , wherein the at least one processor is further configured to:

transmit, to the second network node, a request for the second network node to transmit the first set of SSBs,

wherein the first set of times is semi-static or aperiodic.

8 . The first network node of claim 1 , wherein a first SSB of the first set of SSBs comprises a primary synchronization signal (PSS), a physical broadcast channel (PBCH), and a secondary synchronization signal (SSS), wherein the first measurement information corresponds to the SSS, and wherein to generate the first measurement information based on the bitmap information, the at least one processor is configured to perform one or more measurements of the SSS and refrain from performing one or more measurements of the PSS or the PBCH.

9 . A first network node comprising:

a memory; and

at least one processor coupled to the memory, wherein the at least one processor is configured to:

receive, from a second network node, an indication of a first quantity of beams;

receive, from the second network node, bitmap information, wherein the bitmap information includes a first bitmap and a second bitmap, wherein the first bitmap corresponds to a first beam of the first quantity of beams and indicates a first set of times for transmission of a first set of synchronization signal blocks (SSBs) by the second network node in a first direction of the first beam, and wherein the second bitmap corresponds to a second beam of the first quantity of beams and indicates a second set of times for transmission of a second set of SSBs by the second network node in a second direction of the second beam, wherein the first direction is a first direction of corresponds to a first reference SSB of the first set of SSBs;

generate first measurement information based on the bitmap information; and

transmit, to the second network node within a time period from an end of reception of the first reference SSB, an uplink transmission in the first direction, wherein the first reference SSB is time division multiplexed with the uplink transmission, and wherein the first measurement information includes measurement information corresponding to the first reference SSB.

10 . A first network node comprising:

a memory; and

at least one processor coupled to the memory, wherein the at least one processor is configured to:

generate an indication of a first quantity of beams;

generate bitmap information, wherein the bitmap information includes a first bitmap and a second bitmap, wherein the first bitmap corresponds to a first beam of the first quantity of beams and indicates a first set of times for transmission of a first set of synchronization signal blocks (SSBs) by a second network node in a first direction of the first beam, and wherein the second bitmap corresponds to a second beam of the first quantity of beams and indicates a second set of times for transmission of a second set of SSBs by the second network node in a second direction of the second beam, wherein the bitmap information comprises a first set of bitmaps indicating times for transmission of non-cell-defining SSBs and a second set of bitmaps indicating times for transmission of cell-defining SSBs, and wherein the first set of bitmaps and the second set of bitmaps are different;

transmit, to the second network node, the indication of a first quantity of beams;

transmit, to the second network node, the bitmap information;

transmit one or more of the first set of SSBs in the first direction; and

transmit one or more of the second set of SSBs in the second direction.

11 . The first network node of claim 10 , wherein the first direction of the first beam corresponds to a first transmission configuration indication (TCI) state of the first beam or a first quasi-colocation (QCL) state of the first beam, and wherein the second direction of the second beam corresponds to a second TCI state of the second beam or a second QLC state of the second beam.

12 . The first network node of claim 10 , wherein the at least one processor is further configured to:

transmit, to the second network node, a downlink transmission in the first direction within a time period from an end of transmission of a first reference SSB of the first set of SSBs, wherein the first direction corresponds to the first reference SSB, and wherein the first reference SSB is time division multiplexed with the downlink transmission, and

wherein the downlink transmission is received by the second network node within a time period from an end of reception of the first reference SSB by the second network node.

13 . A first network node comprising:

a memory; and

at least one processor coupled to the memory, wherein the at least one processor is configured to:

generate an indication of a first quantity of beams;

generate bitmap information, wherein the bitmap information includes a first bitmap and a second bitmap, wherein the first bitmap corresponds to a first beam of the first quantity of beams and indicates a first set of times for transmission of a first set of synchronization signal blocks (SSBs) by a second network node in a first direction of the first beam, and wherein the second bitmap corresponds to a second beam of the first quantity of beams and indicates a second set of times for transmission of a second set of SSBs by the second network node in a second direction of the second beam;

transmit, to the second network node, the indication of a first quantity of beams;

transmit, to the second network node, the bitmap information;

transmit one or more of the first set of SSBs in the first direction;

transmit one or more of the second set of SSBs in the second direction; and

receive, from the second network node, an uplink transmission in the first direction, wherein the first direction corresponds to a first reference SSB of the first set of SSBs,

wherein the first reference SSB is time division multiplexed with the uplink

transmission, and wherein the uplink transmission is transmitted by the second network node within a time period from an end of reception of the first reference SSB by the second network node.