Uplink resynchronization for use in communication systems
First Claim
Patent Images
1. An access device comprising:
- a processor; and
a memory for storing instructions executable by the processor;
wherein the processor is programmed to;
send a Physical Uplink Control Channel (PUCCH) resource configuration to a wireless device, the PUCCH resource configuration including an indication of a PUCCH resource;
transmit one or more time advance commands to the wireless device to control a time alignment timer in the wireless device;
receive uplink transmissions from the wireless device over the PUCCH resource;
receive an uplink transmission request after the time alignment timer has expired; and
send an indication that the PUCCH resource configuration is still available.
12 Assignments
0 Petitions
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.
31 Citations
26 Claims
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1. An access device comprising:
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a processor; and a memory for storing instructions executable by the processor; wherein the processor is programmed to; send a Physical Uplink Control Channel (PUCCH) resource configuration to a wireless device, the PUCCH resource configuration including an indication of a PUCCH resource; transmit one or more time advance commands to the wireless device to control a time alignment timer in the wireless device; receive uplink transmissions from the wireless device over the PUCCH resource; receive an uplink transmission request after the time alignment timer has expired; and send an indication that the PUCCH resource configuration is still available. - View Dependent Claims (2, 3, 4)
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5. A non-transitory computer-readable medium having stored therein instructions that, when executed by a processor of an access device, cause the access device to perform operations comprising:
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sending a Physical Uplink Control Channel (PUCCH) resource configuration to a wireless device, the PUCCH resource configuration including an indication of a PUCCH resource; transmitting one or more time advance commands to the wireless device to control a time alignment timer in the wireless device; receiving uplink transmissions from the wireless device over the PUCCH resource; receiving an uplink transmission request after the time alignment timer has expired; and sending an indication that the PUCCH resource configuration is still available. - View Dependent Claims (6, 7, 8)
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9. An access device comprising:
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a processor; and a memory for storing instructions executable by the processor; wherein the processor is programmed to; transmit a configuration of a physical uplink control channel (PUCCH) resource; receive a transmission from a wireless device using the PUCCH resource; determine that uplink time synchronization with the wireless device is lost; send an indication to the wireless device that the configuration of the PUCCH resource is valid; and receive another transmission from the wireless device using the PUCCH resource associated with the configuration of the PUCCH resource after the wireless device reestablishes time alignment through a random access procedure. - View Dependent Claims (10, 11, 12)
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13. A non-transitory computer-readable medium having stored therein instructions that, when executed by a processor of an access device, cause the access device to perform operations comprising:
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transmitting a configuration of a physical uplink control channel (PUCCH) resource; receiving a transmission from a wireless device using the PUCCH resource; determining that uplink time synchronization with the wireless device is lost; sending an indication to the wireless device that the configuration of the PUCCH resource is valid; and receiving another transmission from the wireless device using the PUCCH resource associated with the configuration of the PUCCH resource after the wireless device reestablishes time alignment through a random access procedure. - View Dependent Claims (14, 15, 16)
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17. 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 PUCCH resources 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 (18, 19, 20, 21)
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22. 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 PUCCH resources 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 (23, 24, 25)
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26. 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 PUCCH resources 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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Specification