Access procedures in wireless communications
Wireless communications for access procedures are described. One or more control messages may indicate a report request associated with an access procedure. One or more reports associated with the access procedure may indicate one or more results associated with one or more access channels.
1. A method comprising:
transmitting, by a wireless device to a base station, at least one preamble associated with random access;
receiving a report request associated with the random access; and
transmitting, based on the report request, a response comprising:
a first indication associated with a quantity of preamble transmissions via a first sub-band of a plurality of sub-bands of an uplink carrier of a cell; and
a second indication associated with a quantity of preamble transmission attempts associated with the first sub-band.
2. The method of claim 1 , wherein the second indication indicates at least one of:
the quantity of the preamble transmission attempts associated with the first sub-band; or
a quantity of preamble transmission failures associated with the first sub-band,
wherein a preamble transmission failure comprises at least one of: dropping, canceling, delaying, skipping, or aborting a preamble transmission.
3. The method of claim 1 , further comprising determining, based on an identifier associated with the first sub-band, the response comprising the first indication and the second indication,
wherein the report request comprises the identifier.
4. The method of claim 1 , wherein the response further comprises:
a third indication associated with a quantity of preamble transmissions via a second sub-band of the plurality of sub-bands of the uplink carrier of the cell; and
a fourth indication associated with a quantity of preamble transmission attempts associated with the second sub-band.
5. The method of claim 1 , wherein the response further indicates:
a first total quantity of preamble transmissions via the plurality of sub-bands of the uplink carrier of the cell; and
a second total quantity of preamble transmission attempts associated with the plurality of sub-bands of the uplink carrier of the cell.
6. The method of claim 5 , wherein the second total quantity of preamble transmission attempts is determined based on at least one preamble transmission attempt counter value.
7. The method of claim 1 , further comprising:
determining an occupancy status associated with a random access occasion of the first sub-band; and
incrementing, after determining the occupancy status, a preamble transmission attempt counter value associated with the first sub-band.
8. The method of claim 1 , further comprising:
determining, based on a first occupancy status associated with a first random access occasion of the first sub-band, a first preamble transmission failure associated with the first random access occasion;
determining, based on a second occupancy status associated with a second random access occasion of a second sub-band of the plurality of sub-bands of the uplink carrier of the cell, a second preamble transmission failure associated with the second random access occasion; and
incrementing, based on determining the first occupancy status and the second occupancy status, at least one preamble transmission attempt counter value.
9. The method of claim 8 , wherein the at least one preamble transmission attempt counter value comprises at least one of:
a first preamble transmission attempt counter value associated with the first sub-band;
a second preamble transmission attempt counter value associated with the second sub-band; or
an aggregated preamble transmission attempt counter value associated with the plurality of sub-bands of the uplink carrier of the cell.
10. The method of claim 1 , wherein the uplink carrier comprises a plurality of bandwidth parts (BWPs), and wherein a bandwidth part (BWP) of the plurality of BWPs comprises at least one sub-band of the plurality of sub-bands of the uplink carrier of the cell.
11. The method of claim 1 , wherein the first sub-band is within an initial bandwidth part (BWP) of a plurality of bandwidth parts (BWPs) of the uplink carrier of the cell, and wherein the initial BWP is configured for initial access to the cell.
12. A method comprising:
transmitting, by a wireless device to a base station, at least one preamble associated with random access;
receiving a report request associated with the random access; and
transmitting, based on the report request, a response comprising:
a first indication associated with a quantity of preamble transmissions via a first sub-band of a plurality of sub-bands of an uplink carrier of a cell; and
a second indication associated with a quantity of preamble transmissions via a second sub-band of the plurality of sub-bands of the uplink carrier of the cell.
13. The method of claim 12 , wherein the response further comprises:
a third indication associated with a quantity of preamble transmission attempts associated with the first sub-band; and
a fourth indication associated with a quantity of preamble transmission attempts associated with the second sub-band.
14. The method of claim 12 , wherein the response further indicates:
a first total quantity of preamble transmissions via the plurality of sub-bands of the uplink carrier of the cell; and
a second total quantity of preamble transmission attempts associated with the plurality of sub-bands of the uplink carrier of the cell.
15. The method of claim 12 , further comprising determining, based on at least one identifier associated with the first sub-band and with the second sub-band, the response comprising the first indication and the second indication,
wherein the report request comprises the at least one identifier.
16. The method of claim 12 , further comprising:
determining, based on a first occupancy status associated with a first random access occasion of the first sub-band, a first preamble transmission failure associated with the first random access occasion;
determining, based on a second occupancy status associated with a second random access occasion of the second sub-band, a second preamble transmission failure associated with the second random access occasion; and
incrementing, based on determining the first occupancy status and the second occupancy status, at least one preamble transmission attempt counter value.
17. The method of claim 12 , wherein the first sub-band is within a first bandwidth part (BWP) of a plurality of bandwidth parts (BWPs) of the uplink carrier of the cell, and wherein the second sub-band is within a second BWP of the plurality of BWPs.
18. The method of claim 12 , wherein the first sub-band and the second sub-band are within an initial bandwidth part (BWP) of a plurality of bandwidth parts (BWPs) of the uplink carrier of the cell, and wherein the initial BWP is configured for initial access to the cell.
19. The method of claim 12 , wherein the uplink carrier comprises a plurality of bandwidth parts (BWPs), and wherein a bandwidth part (BWP) of the plurality of BWPs comprises at least one sub-band of the plurality of sub-bands of the uplink carrier of the cell.