Random access channel response handling with aggregated component carriers
AssigneeConversant Wireless Licensing S.a r.l.
InventorsJianke Fan, Juha S. Korhonen, Mikko J. Rinne, Esa M. Malkamaki
Life of this patent
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Abstract
Disclosed herein are methods, computer program instructions and apparatus for performing random access procedures in a wireless communication system. A method includes receiving at a network access node, in different time and frequency resources that are allocated for preamble transmission, and in different ones of a plurality of component carriers, a plurality of random access requests from individual ones of a plurality of user equipments; and transmitting a corresponding plurality of random access responses in a time and frequency resource of a single component carrier.
Claims9
A method for mobile communication using carrier aggregation, the method comprising:
- transmitting, from a user equipment to a network access node in a carrier aggregation network, a random access preamble in a time and frequency resource allocated for preamble transmission on any one of a plurality of component carriers, the plurality of component carriers comprising a primary component carrier and a plurality of secondary component carriers, the one of the plurality of secondary component carriers being selected by the user equipment;
- receiving, at the user equipment, a random access response to the random access preamble, the random access response being aggregated with other random access responses in a time and frequency resource of the primary component carrier regardless of on which component carrier among the plurality of component carriers the random access preamble was transmitted,
- wherein the aggregated random access response comprises responses to a plurality of random access preambles from individual ones of a plurality of user equipments.
An apparatus comprising:
- a wireless receiver;
- a wireless transmitter;
- and
- a controller configured to utilize the wireless receiver and the wireless transmitter, the controller further configured to:
- transmit, via the wireless transmitter, a random access preamble to a network access node in a time and frequency resource allocated for preamble transmission on one of a plurality of component carriers, the plurality of component carriers comprising a primary component carrier and a plurality of secondary component carriers, the one of the plurality of secondary component carriers being selected by the user equipment, the network access node being in a carrier aggregation network;
- and
- receive, via the wireless receiver, a random access response to the random access preamble, the random access response being aggregated with other random access responses in a time and frequency resource of the primary component carrier regardless of on which component carrier among the plurality of component carriers the random access preamble was transmitted,
- wherein the aggregated random access response comprises responses to a plurality of random access preambles from individual ones of a plurality of user equipments.
A non-transitory computer-readable storage medium storing instructions that, when executed on a processor, cause an apparatus to perform:
- transmitting, from a user equipment to a network access node in a carrier aggregation network, a random access preamble in a time and frequency resource allocated for preamble transmission on one of a plurality of component carriers, the plurality of secondary component carriers comprising a primary component carrier and plurality of secondary component carriers, the one of the plurality of secondary component carriers being selected by the user equipment;
- and
- receiving, at the user equipment, a random access response to the random access preamble, the random access response being aggregated with other random access responses in a time and frequency resource of the primary component carrier regardless of on which component carrier among the plurality of component carriers the random access preamble was transmitted,
- wherein the aggregated random access response comprises responses to a plurality of random access preambles from individual ones of a plurality of user equipments.
Dependencies are inferred from the claim text.