System and method for coordination of wireless maintenance channel power control
First Claim
1. A method for wireless communication comprising:
- defining at least one wireless maintenance channel operable to transmit synchronization messages, the synchronization messages having a power level;
determining the presence of data to be transmitted from a wireless access terminal; and
adjusting the power level of the synchronization message sent from the access terminal via the maintenance channel as a result of the determining the presence of data.
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Accused Products
Abstract
In a wireless communication system, wireless channels are maintained for communication between users and the base station. Often, a wireless user may be switched on, but not actively sending or receiving data. Accordingly, wireless users may be “active,” and currently allocated a wireless traffic channel for sending or receiving, or “idle,” and not currently sending or receiving. A wireless user may be maintained in an idle state through a periodic sequence of synchronization messages. A method for controlling a power level of a wireless message includes determining the presence of data to be transmitted, and adjusting the power level of the synchronization message depending on the presence of data. The synchronization messages corresponding to the idle state employ a lower power level than the active state transmissions which employ a higher power level. The system therefore controls the power accordingly such that synchronization messages are sent at a lower power level when no data is present, thereby reducing power consumption and interference.
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Citations
53 Claims
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1. A method for wireless communication comprising:
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defining at least one wireless maintenance channel operable to transmit synchronization messages, the synchronization messages having a power level;
determining the presence of data to be transmitted from a wireless access terminal; and
adjusting the power level of the synchronization message sent from the access terminal via the maintenance channel as a result of the determining the presence of data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A communication system comprising:
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at least one wireless maintenance channel operable to transmit synchronization messages, the synchronization messages having a power level;
a wireless access terminal operable to determine the presence of data to be transmitted; and
a power level controller operable to adjust the power level of the synchronization message sent from the access terminal via the maintenance channel as a result of the determining the presence of data. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. A method for controlling a power level of a wireless signal over a maintenance channel comprising:
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providing a subscriber unit and a base station operable for wireless communications;
defining a plurality of channels for wireless communication between the base station and the subscriber unit;
establishing a maintenance link over at least one of the channels for maintaining the channel in at least an idle state, the maintenance channel operable for transmitting synchronization messages, the synchronization messages having a power level;
determining a data transmission state indicative of the presence or absence of data to be transmitted from a wireless access terminal;
computing a power level of the synchronization message based on the data transmission state; and
adjusting the power level of a message sent from the subscriber unit as a result of the computed power level.
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51. A computer program product having computer program code for controlling a power level of a wireless message comprising:
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computer program code for defining at least one wireless maintenance channel operable to transmit synchronization messages, the synchronization messages having a power level;
computer program code for determining the presence of data to be transmitted from a wireless access terminal; and
computer program code for adjusting the power level of the synchronization message sent from the access terminal via the maintenance channel as a result of the determining the presence of data.
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52. A computer data signal having program code for controlling a power level of a wireless message comprising:
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program code for defining at least one wireless synchronization channel operable to transmit synchronization messages, the synchronization messages having a power level;
program code for determining the presence of data to be transmitted from a wireless access terminal; and
program code for adjusting the power level of the synchronization message sent from the access terminal via the maintenance channel as a result of the determining the presence of data.
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53. A system for controlling the power level of a signal sent over a wireless maintenance channel comprising:
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means for defining at least one wireless maintenance channel operable to transmit synchronization messages, the synchronization messages having a power level;
means for determining the presence of data to be transmitted from a wireless access terminal; and
means for adjusting the power level of the synchronization message sent from the access terminal via the maintenance channel as a result of the determining the presence of data.
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Specification