UPLINK POWER CONTROL FOR LTE
First Claim
1. A method that facilitates generating power control commands in a wireless communication environment, comprising:
- receiving uplink transmissions from an access terminal;
determining whether to adjust an uplink power level employed by the access terminal; and
transmitting power control commands to the access terminal to alter the uplink power level using a layer 1/layer 2 (L1/L2) control information channel utilized for downlink (DL) assignments and uplink (UL) grants.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methodologies are described that facilitate employing aperiodic closed loop power control corrections in a Long Term Evolution (LTE) based wireless communication environment. An aperiodic power control command can be sent over a downlink to control and/or correct an uplink power level employed by an access terminal. Transmission of the aperiodic power control can be triggered by a measurement (e.g., received power being outside a set margin, . . . ). The aperiodic power control command can include a single-bit and/or a multi-bit correction. Further, the access terminal can alter the uplink power level employed for subsequent uplink transmissions based upon the aperiodic power control command when received. Additionally, regardless whether the aperiodic power control command is received at a given time over the downlink, the access terminal can employ periodic power control commands and an open loop power control mechanism to adjust the uplink power level.
-
Citations
106 Claims
-
1. A method that facilitates generating power control commands in a wireless communication environment, comprising:
-
receiving uplink transmissions from an access terminal; determining whether to adjust an uplink power level employed by the access terminal; and transmitting power control commands to the access terminal to alter the uplink power level using a layer 1/layer 2 (L1/L2) control information channel utilized for downlink (DL) assignments and uplink (UL) grants. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A wireless communications apparatus, comprising:
-
a memory that retains instructions related to obtaining uplink transmissions sent from an access terminal at an uplink power level, deciphering whether to alter the uplink power level, evaluating an amount to adjust the uplink power level when effectuating alteration to the uplink power level, and sending power control commands to the access terminal to alter the uplink power level via a layer 1/layer 2 (L1/L2) control information channel utilized for downlink (DL) assignments and uplink (UL) grants; and a processor, coupled to the memory, configured to execute the instructions retained in the memory. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
-
-
33. A wireless communications apparatus that enables yielding power control commands for utilization by access terminals in a wireless communication environment, comprising:
-
means for obtaining uplink transmissions sent from an access terminal at an uplink power level; means for evaluating whether to alter the uplink power level employed by the access terminal; and means for sending power control commands via a layer 1/layer 2 (L1/L2) control information channel used for downlink (DL) assignments and uplink (UL) grants, the power control commands adjust the uplink power level by a specified amount. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
-
-
47. A machine-readable medium having stored thereon machine-executable instructions for:
-
obtaining uplink transmissions sent from an access terminal at an uplink power level; evaluating whether to alter the uplink power level employed by the access terminal; and sending power control commands via a layer 1/layer 2 (L1/L2) control information channel utilized for downlink (DL) assignments and uplink (UL) grants, the power control commands adjust the uplink power level by a specified amount. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
-
-
58. In a wireless communications system, an apparatus comprising:
a processor configured to; receive uplink transmissions from an access terminal; determine whether to adjust an uplink power level employed by the access terminal; and transmit power control commands to the access terminal via a layer 1/layer 2 (L1/L2) control information channel used for downlink (DL) assignments and uplink (UL) grants, the power control commands alter the uplink power level when triggered by a measurement.
-
59. A method that facilitates employing power control commands in wireless communication environment, comprising:
-
transmitting data upon an uplink at a power level; receiving a power control command via a layer 1/layer 2 (L1/L2) control information channel used for downlink (DL) assignments and uplink (UL) grants; altering the power level based upon the power control command; and transmitting data upon the uplink at the altered power level. - View Dependent Claims (60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
-
-
73. A wireless communications apparatus, comprising:
-
a memory that retains instructions related to sending data upon an uplink at a power level, obtaining a power control command via a layer 1/layer 2 (L1/L2) control information channel used for downlink (DL) assignments and uplink (UL) grants, and adjusting the power level based upon the power control command for a subsequent data transmission; and a processor, coupled to the memory, configured to execute the instructions retained in the memory. - View Dependent Claims (74, 75, 76, 77, 78, 79, 80, 81, 82, 83)
-
-
84. A wireless communications apparatus that enables utilizing power control commands in a wireless communication environment, comprising:
-
means for sending data upon an uplink at a power level; means for obtaining a power control command via a layer 1/layer 2 (L1/L2) control information channel used for downlink (DL) assignments and uplink (UL) grants; and means for changing the power level for a subsequent data transmission as a function of the power control command. - View Dependent Claims (85, 86, 87, 88, 89, 90, 91, 92, 93, 94)
-
-
95. A machine-readable medium having stored thereon machine-executable instructions for:
-
sending data upon an uplink at a power level; obtaining a power control command via a layer 1/layer 2 (L1/L2) control information channel used for downlink (DL) assignments and uplink (UL) grants; and changing the power level for a subsequent data transmission as a function of the power control command. - View Dependent Claims (96, 97, 98, 99, 100, 101, 102, 103, 104, 105)
-
-
106. In a wireless communications system, an apparatus comprising:
a processor configured to; transmit data upon an uplink at a power level; receive a power control command via a layer 1/layer 2 (L1/L2) control information channel used for downlink (DL) assignments and uplink (UL) grants; alter the power level based upon the power control command; and transmit data upon the uplink at the altered power level.
Specification