Back to results
US 11,910,441 B2Granted
Physical random access channel (PRACH) in unlicensed spectrum
AssigneeNokia Technologies Oy
InventorsJorma Johannes Kaikkonen, Timo Erkki Lunttila, Sami-Jukka Hakola, Jarkko Tuomo Koskela
Life of this patent
Estimating the term…
Abstract
Systems, methods, apparatuses, and computer program products for physical random access channel (PRACH) in unlicensed spectrum may be provided. For example, a configuration may be provided to a user equipment, where the configuration is related to using short control signaling exemption (SCSe) in connection with the management of uplink PRACH transmissions.
Claims15
An apparatus, comprising:
- at least one processor;
- and
- at least one memory including computer program code,
- wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to:
- transmit a configuration for uplink physical random access channel transmissions, wherein the configuration comprises an indication of one or more conditions for applying short control signaling exemption to the uplink physical random access channel transmissions;
- and
- receive the uplink physical random access channel transmissions, wherein
- the one or more conditions comprise at least one of:
- whether the short control signaling exemption can be applied to one or more random access channel occasions,
- a decision threshold comprising a value between 0 and 1, the value represents a statistical share of random access channel occasions for which the short control signaling exemption can be applied,
- a failure of a listen before talk procedure or a failure of a physical random access channel transmission during a time period,
- whether an uplink physical random access channel transmission is an initial transmission or a retransmission, or
- whether a bitmap indicates that the short control signaling exemption can be applied to the uplink physical random access channel transmissions.
10 more elements
An apparatus, comprising:
- at least one processor;
- and
- at least one memory including computer program code,
- wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to:
- receive a configuration for uplink physical random access channel transmissions, wherein the configuration comprises one or more conditions for applying short control signaling exemption to the uplink physical random access channel transmissions;
- determine whether the short control signaling exemption can be applied to the uplink physical random access channel transmissions based on the one or more conditions;
- and
- based on the determination, either:
- transmit the uplink physical random access channel transmissions using the short control signaling exemption, or
- perform a listen before talk procedure and either transmit the uplink physical random access channel transmissions or determine to not transmit the uplink physical random access channel transmissions depending on a result of the listen before talk procedure.
7 more elements
A method, comprising:
- receiving a configuration for uplink physical random access channel transmissions, wherein the configuration comprises one or more conditions for applying short control signaling exemption to the uplink physical random access channel transmissions;
- determining whether the short control signaling exemption can be applied to the uplink physical random access channel transmissions based on the one or more conditions;
- and
- based on the determination, either:
- transmitting the uplink physical random access channel transmissions using the short control signaling exemption, or
- performing a listen before talk procedure and either transmitting the uplink physical random access channel transmissions or determining to not transmit the uplink physical random access channel transmissions depending on a result of the listen before talk procedure.
3 more elements
Dependencies are inferred from the claim text.