Devices and methods for facilitating access probe sequences
First Claim
1. An access terminal, comprising:
- a communications interface;
a storage medium; and
a processing circuit coupled to the communications interface and the storage medium, the processing circuit adapted to;
transmit via the communications interface a plurality of previously successful access probes;
determine an initial transmission power level based at least in part on one or more parameters associated with the plurality of previously successful access probes; and
transmit via the communications interface an initial access probe of a subsequent access attempt, wherein the initial access probe is transmitted at the determined initial transmission power level;
wherein determining the initial transmission power level is further based on at least one of;
an average power level of at least one or more of the plurality of previously successful access probes; and
a difference of an average open-loop power level associated with the plurality of previously successful access probes and an open-loop power level associated with the subsequent access attempt.
1 Assignment
0 Petitions
Accused Products
Abstract
Access terminals are adapted to transmit a plurality of previously successful access probes to a network node, and determine an initial transmission power level for subsequent access attempts. The initial transmission power level can be determined based at least in part on one or more parameters associated with the plurality of previously successful access probes. An initial access probe of a subsequent access attempt can then be transmitted at the determined initial transmission power level. Network nodes that receive the one or more access probes from access terminals can send a message instructing the access terminals to employ a particular initial transmission power level for a subsequent access attempt. Other aspects, embodiments, and features are also included.
74 Citations
25 Claims
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1. An access terminal, comprising:
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a communications interface; a storage medium; and a processing circuit coupled to the communications interface and the storage medium, the processing circuit adapted to; transmit via the communications interface a plurality of previously successful access probes; determine an initial transmission power level based at least in part on one or more parameters associated with the plurality of previously successful access probes; and transmit via the communications interface an initial access probe of a subsequent access attempt, wherein the initial access probe is transmitted at the determined initial transmission power level; wherein determining the initial transmission power level is further based on at least one of; an average power level of at least one or more of the plurality of previously successful access probes; and a difference of an average open-loop power level associated with the plurality of previously successful access probes and an open-loop power level associated with the subsequent access attempt. - View Dependent Claims (2)
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3. An access terminal comprising:
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a communications interface; a storage medium; and a processing circuit coupled to the communications interface and the storage medium, the processing circuit adapted to; transmit via the communications interface a plurality of previously successful access probes; determine an initial transmission power level based at least in part on one or more parameters associated with the plurality of previously successful access probes; transmit via the communications interface an initial access probe of a subsequent access attempt, wherein the initial access probe is transmitted at the determined initial transmission power level; determine whether the access terminal is mobile or at least substantially stationary; transmit the initial access probe of a subsequent access attempt at the determined initial transmission power level when the access terminal is determined to be at least substantially stationary; and transmit the initial access probe of a subsequent access attempt at a default initial transmission power level when the access terminal is determined to be mobile.
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4. An access terminal comprising:
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a communications interface; a storage medium; and a processing circuit coupled to the communications interface and the storage medium, the processing circuit adapted to; transmit via the communications interface a plurality of previously successful access probes; determine an initial transmission power level based at least in part on one or more parameters associated with the plurality of previously successful access probes; transmit via the communications interface an initial access probe of a subsequent access attempt, wherein the initial access probe is transmitted at the determined initial transmission power level; monitor an access terminal location, a radio environment, or both; and transmit an initial access probe of a subsequent access attempt at a default initial transmission power level in response to a sufficient change in the access terminal location, the radio environment, or both.
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5. A method operational at an access terminal, comprising:
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conducting a plurality of preceding access attempts, where each preceding access attempt comprises transmitting access probes at successively increasing power levels until an access probe is successful; determining an initial transmission power level based at least in part on one or more parameters associated with the plurality of previously successful access probes; and conducting a subsequent access attempt, where an initial access probe is transmitted at the determined initial transmission power level; wherein determining the initial transmission power level is further based on at least one of; an average power level of at least one or more of the plurality of previously successful access probes; and a difference of an average open-loop power level associated with the plurality of previously successful access probes and an open-loop power level associated with the subsequent access attempt. - View Dependent Claims (6)
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7. A method operational at an access terminal, comprising:
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conducting a plurality of preceding access attempts, where each preceding access attempt comprises transmitting access probes at successively increasing power levels until an access probe is successful; determining an initial transmission power level based at least in part on one or more parameters associated with the plurality of previously successful access probes; and conducting a subsequent access attempt, where an initial access probe is transmitted at the determined initial transmission power level; wherein determining the initial transmission power level based at least in part on one or more parameters associated with the plurality of successful access probes comprises; determining an average power level (PAP) of at least some of the plurality of previously successful access probes; determining an average open-loop power level (ROLsucc) associated with the plurality of previously successful access probes; determining an open-loop power level (ROLnew) associated with the subsequent access attempt; and determining the initial transmission power level (P) from the equation P=PAP+(ROLsucc−
ROLnew).
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8. A method operational at an access terminal, comprising:
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conducting a plurality of preceding access attempts, where each preceding access attempt comprises transmitting access probes at successively increasing power levels until an access probe is successful; determining an initial transmission power level based at least in part on one or more parameters associated with the plurality of previously successful access probes; conducting a subsequent access attempt, where an initial access probe is transmitted at the determined initial transmission power level; determining whether the access terminal is mobile or at least substantially stationary; transmitting the initial access probe of a subsequent access attempt at the determined initial transmission power level in response to determining the access terminal is at least substantially stationary; and transmitting the initial access probe of a subsequent access attempt at a default initial transmission power level in response to determining the access terminal is mobile.
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9. A method operational at an access terminal, comprising:
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conducting a plurality of preceding access attempts, where each preceding access attempt comprises transmitting access probes at successively increasing power levels until an access probe is successful; determining an initial transmission power level based at least in part on one or more parameters associated with the plurality of previously successful access probes; conducting a subsequent access attempt, where an initial access probe is transmitted at the determined initial transmission power level; monitoring an access terminal location, a radio environment or both; and transmitting an initial access probe of a subsequent access attempt at a default initial transmission power level in response to a sufficient change in the access terminal location, the radio environment, or both.
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10. An access terminal, comprising:
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means for conducting a plurality of preceding access attempts, where each preceding access attempt comprises transmitting access probes at successively increasing power levels until an access probe is successful; means for determining an initial transmission power level based at least in part on one or more parameters associated with the plurality of previously successful access probes; and means for conducting a subsequent access attempt, where an initial access probe is transmitted at the determined initial transmission power level; wherein determining the initial transmission power level with the means for determining is further based on at least one of; an average power level of at least one or more of the plurality of previously successful access probes; and a difference of an average open-loop power level associated with the plurality of previously successful access probes and an open-loop power level associated with the subsequent access attempt.
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11. A processor-readable medium comprising programming operational on an access terminal, which when executed by a processor, causes the processor to:
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determine an initial transmission power level based at least in part on one or more parameters associated with a plurality of previously successful access probes; and transmit an initial access probe of a subsequent access attempt, wherein the initial access probe is transmitted at the determined initial transmission power level; wherein determining the initial transmission power level is further based on at least one of; an average power level of at least one or more of the plurality of previously successful access probes; and a difference of an average open-loop power level associated with the plurality of previously successful access probes and an open-loop power level associated with the subsequent access attempt.
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12. A network node, comprising:
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a communications interface; a storage medium; and a processing circuit coupled to the communications interface and the storage medium, the processing circuit adapted to; receive one or more access probes from an access terminal via the communications interface; send via the communications interface a message instructing the access terminal to employ one of a particular initial transmission power level for a subsequent access attempt or a default transmission power level for the subsequent access attempt when determined by the network; and receive additional one or more access probes from the access terminal of another subsequent access attempt at the default transmission power level when determined by the network whereupon each subsequent access probe is transmitted at a sequentially higher transmission power level until an access probe is successful. - View Dependent Claims (13, 14, 15, 16)
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17. A method operational at a network node, comprising:
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receiving one or more access probes from an access terminal; transmitting a message instructing the access terminal to employ a particular initial transmission power level for a subsequent access attempt, or a default transmission power level for the subsequent access attempt when determined by the network; and receiving additional one or more access probes from the access terminal of another subsequent access attempt at the default transmission power level when determined by the network whereupon each subsequent access probe is transmitted at a sequentially higher transmission power level until an access probe is successful. - View Dependent Claims (18, 19, 20, 21)
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22. A network node, comprising:
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means for receiving one or more access probes from an access terminal; and means for transmitting a message instructing the access terminal to employ a particular initial transmission power level for a subsequent access attempt, or a default transmission power level for the subsequent access attempt when determined by the network; and means for receiving additional one or more access probes from the access terminal of another subsequent access attempt at the default transmission power level when determined by the network whereupon each subsequent access probe is transmitted at a sequentially higher transmission power level until an access probe is successful. - View Dependent Claims (23)
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24. A processor-readable medium comprising programming operational on a network node, which when executed by a processor, causes the processor to:
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receive one or more access probes from an access terminal; send a message instructing the access terminal to employ a particular initial transmission power level for a subsequent access attempt, or a default transmission power level for the subsequent access attempt when determined by the network; and receive additional one or more access probes from the access terminal of another subsequent access attempt at the default transmission power level when determined by the network whereupon each subsequent access probe is transmitted at a sequentially higher transmission power level until an access probe is successful.
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25. An access terminal, comprising:
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a communications interface; a storage medium; and a processing circuit coupled to the communications interface and the storage medium, the processing circuit adapted to; transmit via the communications interface a plurality of previously successful access probes; determine an initial transmission power level based at least in part on one or more parameters associated with the plurality of previously successful access probes; transmit via the communications interface an initial access probe of a subsequent access attempt, wherein the initial access probe is transmitted at the determined initial transmission power level; and transmit via the communications interface another initial access probe of another subsequent access attempt at a default transmission power level when receiving via the communications interface a network generated message instructing the access terminal to reset transmission to the default transmission power level, whereupon each subsequent access probe is transmitted at a sequentially higher transmission power level until an access probe is successful.
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Specification