Random access channel preamble assignments for dual connectivity
AssigneeT-Mobile Innovations LLC
InventorsReman PEZHUMKAD BALAKRISHNA, Michael CHANICKA
Life of this patent
Estimating the term…
Abstract
Embodiments of the present disclosure are directed to systems and methods for managing random access for devices seeking access to dual connectivity. Both master nodes and secondary nodes in dual connectivity have 64 available preambles that can be used for random access. By reserving preambles for devices that are requesting access to dual connectivity, a radio access network can assign random access preambles to said devices, enabling them to use contention free random access to gain access to both a master node and a secondary node. In some aspects random access preambles will only be assigned to devices requesting access to dual connectivity if they have a sufficiently high priority level.
Claims20
A method for managing contention free random access in a dual connectivity session, comprising:
- determining that a first user equipment (UE) is configured for a dual connectivity session;
- determining that a second UE is not configured for dual connectivity;
- communicate, based on the first UE being configured for the dual connectivity session, a first random access preamble reservation to the first UE that causes the first UE to perform a contention free random access procedure;
- and
- not communicating, based on the second UE not being configured for dual connectivity, a random access preamble reservation to the second UE, wherein not communicating the random access preamble reservation to the second UE causes the second UE to perform a contention based random access procedure.
A system for managing contention free random access in a dual connectivity session, the system comprising:
- a first node configured to wirelessly communicate with a plurality of user equipment (UE), the plurality of UE comprising a first UE and a second UE;
- and
- one or more computer processing components communicatively coupled to the first node and configured to perform a method comprising:
- communicating a first random access preamble reservation to the first UE that causes the first UE to perform a contention free random access procedure based on receiving, from the first UE, an indication that the first UE is configured to support a dual connectivity connection with the first node and a second node;
- and
- not communicating a random access preamble reservation to the second UE based on receiving, from the second UE, an indication that the second UE is not configured to support a dual connectivity session with the first node and the second node, wherein not communicating the random access preamble reservation to the second UE causes the second UE to perform a contention based random access procedure.
One or more non-transitory computer-readable media having computer-executable instructions embodied thereon that, when executed, cause the one or more processors to perform a method comprising:
- determining that a first user equipment (UE) is configured for a dual connectivity session;
- determining that a second UE is not configured for dual connectivity;
- communicate, based on the first UE being configured for the dual connectivity session, a first random access preamble reservation to the first UE that causes the first UE to perform a contention free random access procedure;
- and
- not communicating, based on the second UE not being configured for dual connectivity, a random access preamble reservation to the second UE, wherein not communicating the random access preamble reservation to the second UE causes the second UE to perform a contention based random access procedure.
Dependencies are inferred from the claim text.