Over-provisioned cyclic shift configuration for prach restricted sets
AssigneeQUALCOMM Incorporated
InventorsRaviteja PATCHAVA, Jing SUN, Junyi LI, Jing JIANG
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Abstract
Aspects relate to providing over-provisioned cyclic shift configurations for physical random access channel (PRACH) restricted sets. The over-provisioned cyclic shift configuration for a preamble root sequence can include an allowed cyclic shift range including an allowed set of cyclic shifts associated with a cyclic shift step size less than a maximum round trip time (RTT) of a cell and respective restricted cyclic shift ranges adjacent to the allowed cyclic shift range on either side thereof.
Claims30
An apparatus at a network entity, comprising:
- one or more memories;
- and
- one or more processors coupled to the one or more memories, wherein the one or more processors are configured to:
- provide a cyclic shift configuration for a preamble root sequence to at least one user equipment (UE), wherein the cyclic shift configuration comprises an allowed cyclic shift range comprising an allowed set of cyclic shifts associated with a cyclic shift step size less than a maximum round trip time (RTT) of a cell associated with the network entity, wherein the cyclic shift configuration further comprises corresponding restricted cyclic shift ranges adjacent to the allowed cyclic shift range on either side thereof;
- and
- obtain a random access preamble message based on the cyclic shift configuration.
A method operable at a network entity, the method comprising:
- providing a cyclic shift configuration for a preamble root sequence to at least one user equipment (UE), wherein the cyclic shift configuration comprises an allowed cyclic shift range comprising an allowed set of cyclic shifts associated with a cyclic shift step size less than a maximum round trip time (RTT) of a cell associated with the network entity, wherein the cyclic shift configuration further comprises corresponding restricted cyclic shift ranges adjacent to the allowed cyclic shift range on either side thereof;
- and
- obtaining a random access preamble message based on the cyclic shift configuration.
An apparatus at a user equipment (UE), comprising:
- one or more memories;
- and
- one or more processors coupled to the one or more memories, wherein the one or more processors are configured to:
- receive a cyclic shift configuration for a preamble root sequence from a network entity, wherein the cyclic shift configuration comprises an allowed cyclic shift range comprising an allowed set of cyclic shifts associated with a cyclic shift step size less than a maximum round trip time (RTT) of a cell associated with the network entity, wherein the cyclic shift configuration further comprises corresponding restricted cyclic shift ranges adjacent to the allowed cyclic shift range on either side thereof;
- and
- transmit a random access preamble message based on the cyclic shift configuration.
A method operable at a user equipment (UE), the method comprising:
- receiving a cyclic shift configuration for a preamble root sequence from a network entity, wherein the cyclic shift configuration comprises an allowed cyclic shift range comprising an allowed set of cyclic shifts associated with a cyclic shift step size less than a maximum round trip time (RTT) of a cell associated with the network entity, wherein the cyclic shift configuration further comprises corresponding restricted cyclic shift ranges adjacent to the allowed cyclic shift range on either side thereof;
- and
- transmitting a random access preamble message based on the cyclic shift configuration.
Dependencies are inferred from the claim text.