Determination and counting of uplink repetitions
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a mobile station may receive a configuration that indicates a number of nominal repetitions associated with an uplink repetition type that does not permit uplink transmission occasions to cross a slot boundary and that permits only one uplink transmission occasion per slot. The mobile station may transmit an actual repetition of the uplink repetition type in a transmission occasion based at least in part on a determination that the transmission occasion has resources available for the actual repetition, wherein the transmission occasion is a slot. The mobile station may terminate transmission of actual repetitions of the uplink repetition type when a number of actual repetitions equals the number of nominal repetitions. Numerous other aspects are provided.
1 . A method of wireless communication performed by a mobile station, comprising:
receiving, by the mobile station, a configuration that indicates a number of nominal repetitions associated with an uplink repetition type that does not permit an uplink transmission occassion, of a set of uplink transmission occasions, to cross a slot boundary and that permits at most one uplink transmission occasion, of the set of uplink transmission occassions, per slot, for the nominal repetitions, the configuration comprising a time domain allocation within a slot for repetitions over a plurality of slots; and
transmitting, by the mobile station, an actual repetition of the uplink repetition type in the uplink transmission occasion based at least in part on a determination that the uplink transmission occasion has resources available for the actual repetition, wherein the uplink transmission occasion is within one of the plurality of slots.
2 . The method of claim 1 , wherein the determination that the uplink transmission occasion has resources available for the actual repetition comprises a determination that the uplink transmission occasion has resources available for a full transmission that comprises all symbols of the actual repetition.
3 . The method of claim 1 , wherein the determination that the uplink transmission occasion has resources available for the actual repetition comprises a determination that the uplink transmission occasion has resources available for a partial transmission that comprises fewer than all symbols of the actual repetition.
4 . The method of claim 3 , wherein partial transmissions of actual repetitions have different starting symbol indexes in at least two different uplink transmission occasions.
5 . The method of claim 3 , wherein the determination that the uplink transmission occasion has resources available for the partial transmission comprises at least one of:
a determination that the uplink transmission occasion comprises a threshold number of demodulation reference signal (DMRS) symbols,
a determination that the uplink transmission occasion comprises a threshold number of data symbols,
a determination that the uplink transmission occasion comprises a threshold number of consecutive symbols for the partial transmission,
a determination that the uplink transmission occasion comprises a threshold number of consecutive symbols that comprise an initial symbol of the actual repetition, or
a combination thereof.
6 . The method of claim 5 , wherein at least one of the threshold number of DMRS symbols, the threshold number of data symbols, or the threshold number of consecutive symbols is indicated to the mobile station by a base station.
7 . The method of claim 3 , further comprising:
receiving an indication of one or more conditions associated with transmitting the partial transmission; and
determining that the uplink transmission occasion has resources available for the partial transmission based at least in part on a determination that the one or more conditions are satisfied.
8 . The method of claim 3 , further comprising:
receiving an indication of a symbol pattern associated with transmitting the partial transmission, wherein the symbol pattern indicates one or more symbols of the actual repetition that are required to be transmitted in the partial transmission; and
determining that the uplink transmission occasion has resources available for the partial transmission based at least in part on the symbol pattern.
9 . The method of claim 8 , wherein the symbol pattern is indicated in the configuration and comprises a static number of bits that is based at least in part on a number of symbols included in the slot.
10 . The method of claim 8 , wherein the symbol pattern is indicated in an uplink grant that schedules the actual repetition, and wherein the symbol pattern comprises a dynamic number of bits that is based at least in part on a number of symbols included in the actual repetition.
11 . The method of claim 1 , further comprising:
receiving an indication to cancel transmission in one or more symbols of the uplink transmission occasion, wherein the indication is received at a time, prior to the uplink transmission occasion, that satisfies a processing time threshold associated with the mobile station;
determining that the uplink transmission occasion satisfies a condition with respect to resources available for a partial transmission of the actual repetition based at least in part on one or more resources available in the uplink transmission occasion after cancellation of transmission in the one or more symbols; and
transmitting the actual repetition based at least in part on determining that the uplink transmission occasion satisfies the condition.
12 . The method of claim 1 , further comprising:
receiving an indication to cancel transmission in one or more symbols of the uplink transmission occasion, wherein the indication is received at a time, prior to the uplink transmission occasion, that does not satisfy a processing time threshold associated with the mobile station;
determining, after transmitting the actual repetition, that the uplink transmission occasion satisfies a condition with respect to resources available for a partial transmission of the actual repetition, based at least in part on one or more resources available in the uplink transmission occasion after cancellation of transmission in the one or more symbols; and
incrementing a repetition counter that counts toward the number of actual repetitions based at least in part on determining that the uplink transmission occasion satisfies the condition.
13 . The method of claim 1 , further comprising:
receiving an indication to cancel transmission in one or more symbols of the uplink transmission occasion, wherein the indication is received at a time, prior to the uplink transmission occasion, that does not satisfy a processing time threshold associated with the mobile station;
determining, after transmitting the actual repetition, that the uplink transmission occasion does not satisfy a condition with respect to resources available for a partial transmission of the actual repetition, based at least in part on one or more resources available in the uplink transmission occasion after cancellation of transmission in the one or more symbols; and
refraining from counting the actual repetition toward the number of actual repetitions based at least in part on determining that the uplink transmission occasion does not satisfy the condition.
14 . The method of claim 1 , further comprising:
receiving an indication to cancel transmission in one or more symbols of the uplink transmission occasion, wherein the indication is received at a time, prior to the uplink transmission occasion, that does not satisfy a processing time threshold associated with the mobile station;
determining, after transmitting the actual repetition, that the uplink transmission occasion does not satisfy a condition with respect to resources available for a partial transmission of the actual repetition, based at least in part on one or more resources available in the uplink transmission occasion after cancellation of transmission in the one or more symbols; and
incrementing a repetition counter that counts toward the number of actual repetitions despite determining that the uplink transmission occasion does not satisfy the condition.
15 . The method of claim 1 , wherein the number of nominal repetitions is less than or equal to a maximum number of repetitions that is based at least in part on a slot pattern configured for the mobile station or a sub-carrier spacing configured for the mobile station.
16 . The method of claim 1 , wherein the actual repetition is transmitted using a redundancy version determined based at least in part on a transmission index that is incremented if actual repetition transmission occurs and that is not incremented if actual repetition transmission does not occur.
17 . The method of claim 1 , wherein the determination that the uplink transmission occasion has resources available for the actual repetition comprises a determination that the uplink transmission occasion does not overlap with a downlink symbol.
18 . A method of wireless communication performed by a base station, comprising:
transmitting, by the base station and to a mobile station, a configuration that indicates a number of nominal repetitions associated with an uplink repetition type that does not permit an uplink transmission occasion, of a set of uplink transmission occasions, to cross a slot boundary and that permits at most one uplink transmission occasion per slot, for the nominal repetitions, the configuration comprising a time domain allocation within a slot for repetitions over a plurality of slots; and
monitoring, by the base station, for an actual repetition of the uplink repetition type in the uplink transmission occasion, based at least in part on a determination that the uplink transmission occasion has resources available for the actual repetition, wherein the uplink transmission occasion is within one of the plurality of slots.
19 . The method of claim 18 , wherein the determination that the uplink transmission occasion has resources available for the actual repetition comprises a determination that the uplink transmission occasion has resources available for a full transmission that comprises all symbols of the actual repetition.
20 . The method of claim 18 , wherein the determination that the uplink transmission occasion has resources available for the actual repetition comprises a determination that the uplink transmission occasion has resources available for a partial transmission that comprises fewer than all symbols of the actual repetition.
21 . The method of claim 20 , further comprising:
transmitting an indication of one or more conditions associated with transmitting the partial transmission; and
determining that the uplink transmission occasion has resources available for the partial transmission based at least in part on a determination that the one or more conditions are satisfied.
22 . The method of claim 20 , further comprising:
transmitting an indication of a symbol pattern associated with transmitting the partial transmission, wherein the symbol pattern indicates one or more symbols of the actual repetition that are required to be transmitted in the partial transmission; and
determining that the uplink transmission has resources available for the partial transmission based at least in part on the symbol pattern.
23 . The method of claim 18 , further comprising:
transmitting an indication to cancel transmission in one or more symbols of the uplink transmission occasion, wherein the indication is transmitted at a time, prior to the uplink transmission occasion, that satisfies a processing time threshold associated with the mobile station;
determining that the uplink transmission occasion satisfies a condition with respect to resources available for a partial transmission of the actual repetition based at least in part on one or more resources available in the uplink transmission occasion after cancellation of transmission in the one or more symbols; and
monitoring for the actual repetition based at least in part on determining that the uplink transmission occasion satisfies the condition.
24 . The method of claim 18 , further comprising:
transmitting an indication to cancel transmission in one or more symbols of the uplink transmission occasion, wherein the indication is transmitted at a time, prior to the uplink transmission occasion, that does not satisfy a processing time threshold associated with the mobile station;
determining that the uplink transmission occasion satisfies a condition with respect to resources available for a partial transmission of the actual repetition, based at least in part on one or more resources available in the uplink transmission occasion after cancellation of transmission in the one or more symbols; and
incrementing a repetition counter that counts toward the number of actual repetitions based at least in part on determining that the uplink transmission occasion satisfies the condition.
25 . The method of claim 18 , further comprising:
transmitting an indication to cancel transmission in one or more symbols of the uplink transmission occasion, wherein the indication is transmitted at a time, prior to the uplink transmission occasion, that does not satisfy a processing time threshold associated with the mobile station;
determining that the uplink transmission occasion does not satisfy a condition with respect to resources available for a partial transmission of the actual repetition, based at least in part on one or more resources available in the uplink transmission occasion after cancellation of transmission in the one or more symbols; and
refraining from counting the actual repetition toward the number of actual repetitions based at least in part on determining that the uplink transmission occasion does not satisfy the condition.
26 . The method of claim 18 , further comprising:
transmitting an indication to cancel transmission in one or more symbols of the uplink transmission occasion, wherein the indication is transmitted at a time, prior to the uplink transmission occasion, that does not satisfy a processing time threshold associated with the mobile station;
determining that the uplink transmission occasion does not satisfy a condition with respect to resources available for a partial transmission of the actual repetition, based at least in part on one or more resources available in the uplink transmission occasion after cancellation of transmission in the one or more symbols; and
incrementing a repetition counter that counts toward the number of actual repetitions despite determining that the uplink transmission occasion does not satisfy the condition.
27 . A mobile station for wireless communication, comprising:
one or more memories; and
one or more processors, the one or more processors, individually or collectively and based at least in part on information stored in the one or more memories being configured to:
receive a configuration that indicates a number of nominal repetitions associated with an uplink repetition type that does not permit an uplink transmission occasion, of a set of uplink transmission occasions, to cross a slot boundary and that permits at most one uplink transmission occasion, of the set of uplink transmission occasions, per slot, for the nominal repetitions, the configuration comprising a time domain allocation within a slot for repetitions over a plurality of slots; and
transmit an actual repetition of the uplink repetition type in the uplink transmission occasion based at least in part on a determination that the uplink transmission occasion has resources available for the actual repetition, wherein the uplink transmission occasion is within one of the plurality of slots.
28 . The mobile station of claim 27 , wherein the one or more processors, to determine that the uplink transmission occasion has resources available for the actual repetition, are configured to determine that the uplink transmission occasion has resources available for a full transmission that comprises all symbols of the actual repetition.
29 . The mobile station of claim 27 , wherein the determination that the uplink transmission occasion has resources available for the actual repetition comprises a determination that the uplink transmission occasion does not overlap with a downlink symbol.
30 . The mobile station of claim 27 , wherein the one or more processors, to determine that the uplink transmission occasion has resources available for the actual repetition, are configured to determine that the uplink transmission occasion has resources available for a full transmission that comprises all symbols of the actual repetition and that the uplink transmission occasion does not overlap with a downlink symbol.
31 . A base station for wireless communication, comprising:
one or more memories; and
one or more processors, the one or more processors, individually or collectively and based at least in part on information stored in the one or more memories, configured to:
transmit, to a mobile station, a configuration that indicates a number of nominal repetitions associated with an uplink repetition type that does not permit an uplink transmission occasion, of a set of uplink transmission occasions, to cross a slot boundary and that permits at most one uplink transmission occasion per slot, for the nominal repetitions, the configuration comprising a time domain allocation within a slot for repetitions over a plurality of slots; and
monitor for an actual repetition of the uplink repetition type in the uplink transmission occasion, based at least in part on a determination that the uplink transmission occasion has resources available for the actual repetition, wherein the uplink transmission occasion is within one of the plurality of slots.