APPARATUS AND METHOD FOR UPLINK POWER CONTROL OF WIRELESS COMMUNICATIONS
First Claim
1. A method that facilitates generating periodic power control commands in a wireless communication environment, comprising:
- transmitting periodic power control commands to an access terminal in response to received periodic signals from the access terminal;
deallocating uplink resources for the access terminal after an inactivity period of the access terminal;
adjusting an uplink power level when the access terminal resumes uplink transmissions; and
resuming transmission of periodic power control commands to the access terminal in response to received periodic signals from the access terminal.
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Accused Products
Abstract
Systems and methodologies are described that facilitate employing periodic closed loop power control corrections in a wireless communication environment. A periodic power control command can be sent over a downlink to control and/or correct an uplink power level employed by an access terminal. Each periodic power control command can be generated based upon an uplink periodic transmission sent from the access terminal. The periodic power control commands can be communicated via a Physical Downlink Control Channel (PDCCH) or in-band signaling. Moreover, access terminals can be grouped to enhance efficiency of downlink transfer of the periodic power control commands. The periodic power control commands can be halted upon access terminal uplink resources being deallocated. For instance, these resources can be deallocated after an inactivity period of the access terminal. Thereafter, the access terminal can initiate random access (e.g., leveraging open loop mechanisms) to resume periodic power control command transmission.
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Citations
88 Claims
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1. A method that facilitates generating periodic power control commands in a wireless communication environment, comprising:
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transmitting periodic power control commands to an access terminal in response to received periodic signals from the access terminal; deallocating uplink resources for the access terminal after an inactivity period of the access terminal; adjusting an uplink power level when the access terminal resumes uplink transmissions; and resuming transmission of periodic power control commands to the access terminal in response to received periodic signals from the access terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A wireless communications apparatus, comprising:
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a memory that retains instructions related to sending periodic power control commands to an access terminal in response to received periodic uplink transmissions from the access terminal, deallocating uplink resources for the access terminal after an inactivity period of the access terminal, controlling alteration of an uplink power level upon resuming of uplink transmissions from the access terminal, and resuming transfer of periodic power control commands to the access terminal in response to received periodic uplink transmissions from the access terminal; and a processor, coupled to the memory, configured to execute the instructions retained in the memory. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A wireless communications apparatus that enables yielding periodic power control commands for utilization by access terminals in a wireless communication environment, comprising:
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means for sending periodic power control commands to an access terminal based upon evaluation of respective received periodic signals; means for deallocating physical uplink resources for the access terminal after an inactivity period of the access terminal; means for altering an uplink power level upon the access terminal resuming uplink transmissions; and means for resuming transfer of periodic power control commands to the access terminal based on the received periodic signals. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A machine-readable medium having stored thereon machine-executable instructions for:
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transmitting periodic power control commands to an access terminal in response to received periodic uplink transmissions from the access terminal; deallocating uplink resources for the access terminal after an inactivity period of the access terminal; controlling alteration of an uplink power level upon resuming of uplink transmissions from the access terminal; and resuming transmission of periodic power control commands to the access terminal in response to received periodic uplink transmissions from the access terminal. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. In a wireless communications system, an apparatus comprising:
a processor configured to; transmit periodic power control commands to an access terminal in response to received periodic signals from the access terminal; deallocate uplink resources for the access terminal after an inactivity period of the access terminal; control adjustment of an uplink power level when the access terminal resumes uplink transmissions; and restart transmission of periodic power control commands to the access terminal in response to received periodic signals from the access terminal.
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52. A method that facilitates utilizing periodic power control commands in a wireless communication environment, comprising:
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sending periodic transmissions over an uplink; receiving periodic power control commands in response to each of the periodic transmissions; transitioning to a state where uplink dedicated resources are released; resuming uplink transmission; and resuming the periodic transmissions over the uplink and receipt of the responsive, periodic power control commands. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61)
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62. A wireless communications apparatus, comprising:
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a memory that retains instructions related to transferring periodic transmissions over an uplink, obtaining periodic power control commands each generated based upon the periodic transmissions, transitioning to a state where uplink dedicated resources are released from an access terminal, resuming uplink transmission, and restarting the periodic transmissions over the uplink and receipt of the periodic power control commands; and a processor, coupled to the memory, configured to execute the instructions retained in the memory. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69, 70, 71)
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72. A wireless communications apparatus that enables utilizing periodic power control commands in a wireless communication environment, comprising:
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means for transferring periodic transmissions over an uplink to obtain respective, periodic power control commands in response; means for switching to a state where physical uplink dedicated resources are released; means for resuming uplink transmission; and means for resuming the periodic transmissions over the uplink and receipt of the respective, periodic power control commands. - View Dependent Claims (73, 74, 75, 76, 77, 78, 79, 80)
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81. A machine-readable medium having stored thereon machine-executable instructions for:
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transferring periodic Sounding Reference Signal (SRS) transmissions over an uplink; obtaining periodic power control commands each generated based upon the periodic transmissions; transitioning to a state where uplink dedicated resources are released from an access terminal; resuming uplink transmission; and restarting the periodic transmissions over the uplink and receipt of the periodic power control commands. - View Dependent Claims (82, 83, 84, 85, 86, 87)
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88. In a wireless communications system, an apparatus comprising:
a processor configured to; send periodic transmissions over an uplink; receive periodic power control commands in response to each of the periodic transmissions; transition to a state where uplink dedicated resources are released; resume uplink transmission; and resume the periodic transmissions over the uplink and receipt of the responsive, periodic power control commands.
Specification