Uplink resynchronization for use in communication systems
First Claim
Patent Images
1. A method for reusing a control channel configuration associated with a physical uplink control channel (PUCCH), the method comprising:
- receiving a configuration of a PUCCH resource;
transmitting using the PUCCH resource;
responsive to expiration of a time alignment timer, releasing the PUCCH resource and retaining the configuration of the PUCCH resource;
receiving an indication from an access device that the retained configuration of the PUCCH resource is valid after reestablishing time alignment through a random access procedure;
determining that the PUCCH resource is available for transmitting further uplink transmissions based on the indication; and
transmitting using the PUCCH resource associated with the configuration of the PUCCH resource after reestablishing time alignment through the random access procedure.
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Accused Products
Abstract
A method and apparatus for reusing an uplink control channel configuration associated with an uplink control channel, the method comprising the steps of, at a user agent, receiving an uplink control channel resource configuration assigned by an access device, transmitting to the access device using the control channel resources associated with the received uplink control channel resource configuration and, after a time alignment timer expires, retaining the uplink control channel resource configuration.
26 Citations
13 Claims
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1. A method for reusing a control channel configuration associated with a physical uplink control channel (PUCCH), the method comprising:
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receiving a configuration of a PUCCH resource; transmitting using the PUCCH resource; responsive to expiration of a time alignment timer, releasing the PUCCH resource and retaining the configuration of the PUCCH resource; receiving an indication from an access device that the retained configuration of the PUCCH resource is valid after reestablishing time alignment through a random access procedure; determining that the PUCCH resource is available for transmitting further uplink transmissions based on the indication; and transmitting using the PUCCH resource associated with the configuration of the PUCCH resource after reestablishing time alignment through the random access procedure. - View Dependent Claims (2, 3, 4, 5)
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6. A method for reusing a control channel configuration associated with a physical uplink control channel (PUCCH), the method comprising:
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maintaining a time alignment timer; receiving a configuration of a PUCCH resource; transmitting using the PUCCH resource; and responsive to expiration of the time alignment timer; releasing the PUCCH resource; storing the configuration of the PUCCH resource; reestablishing time alignment through a random access procedure; receiving an indication from an access device that the stored configuration of the PUCCH resource is valid; determining that the PUCCH resource is available for transmitting further uplink transmissions based on the indication; and reusing the PUCCH resource associated with the configuration of the PUCCH resource.
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7. A user agent apparatus comprising:
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a processor; a transmitter linked to the processor; and a receiver linked to the processor; wherein the processor is programmed to perform the operations of; receiving a configuration of a physical uplink control channel (PUCCH) resource; transmitting via the transmitter using the PUCCH resource; responsive to expiration of a time alignment timer, releasing the PUCCH resource and retaining the configuration of the PUCCH resource; receiving an indication from an access device that the retained configuration of the PUCCH resource is valid after reestablishing time alignment through a random access procedure; determining that the PUCCH resource is available for transmitting further uplink transmissions based on the indication; and transmitting using the PUCCH resource associated with the configuration of the PUCCH resource after reestablishing time alignment through the random access procedure. - View Dependent Claims (8, 9, 10)
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11. A user agent apparatus comprising:
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a processor; a transmitter linked to the processor; and a receiver linked to the processor; wherein the processor is programmed to perform the steps of; maintaining a time alignment timer; receiving via the receiver a configuration of a physical uplink control channel (PUCCH) resource; transmitting via the transmitter using the PUCCH resource; and responsive to expiration of the time alignment timer; releasing the PUCCH resource; storing the configuration of the PUCCH resource; reestablishing time alignment through a random access procedure; receiving an indication from an access device that the stored configuration of the PUCCH resource is valid; determining that the PUCCH resource is available for transmitting further uplink transmissions based on the indication; and reusing the PUCCH resource associated with the configuration of the PUCCH resource to transmit via the transmitter.
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12. A non-transitory computer readable medium having stored therein computer executable instructions for implementing a method in a user equipment, the method comprising:
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receiving a configuration of a physical uplink control channel (PUCCH) resource; transmitting using the PUCCH resource; responsive to expiration of a time alignment timer, releasing the PUCCH resource and retaining the configuration of the PUCCH resource; receiving an indication from an access device that the retained configuration of the PUCCH resource is valid after reestablishing time alignment through a random access procedure; determining that the PUCCH resource is available for transmitting further uplink transmissions based on the indication; and transmitting using the PUCCH resource associated with the configuration of the PUCCH resource after reestablishing time alignment through the random access procedure.
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13. A non-transitory computer readable medium having stored therein computer executable instructions for implementing a method in a user equipment, the method comprising:
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maintaining a time alignment timer; receiving a configuration of a physical uplink control channel (PUCCH) resource; transmitting using the PUCCH resource; and responsive to expiration of the time alignment timer; releasing the PUCCH resource; storing the configuration of the PUCCH resource; reestablishing time alignment through a random access procedure; receiving an indication from an access device that the stored configuration of the PUCCH resource is valid; determining that the PUCCH resource is available for transmitting further uplink transmissions based on the indication; and reusing the PUCCH resource associated with the configuration of the PUCCH resource.
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Specification