SYSTEM AND METHOD FOR RADIO ACCESS NETWORK OVERLOAD CONTROL
First Claim
1. A method of wireless communication operable at an access terminal, comprising:
- receiving a plurality of acquisition indicators each indicating one of a positive acknowledgment or a negative acknowledgement corresponding to a respective access attempt by one or more access terminals;
storing the acquisition indicators in a memory;
determining an overload condition in accordance with the stored acquisition indicators; and
backing off from transmitting an access attempt in accordance with the overload condition.
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Accused Products
Abstract
Methods and apparatuses are provided for access control in a wireless communication system. In particular, certain parameters utilized by access terminals for a random access procedure may be partitioned, such that different classes of access terminals may be controlled independent of other classes. Here, an exclusive set of access classes may be utilized by low-priority machine type communication devices, such that the broadcasting of a bit mask corresponding to the access classes can bar some or all of the low-priority devices. Further, a new access service class may be utilized exclusively by the low-priority devices, wherein the signature space utilized for random access attempts can be partitioned between the new access service class and all other access service classes.
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Citations
28 Claims
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1. A method of wireless communication operable at an access terminal, comprising:
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receiving a plurality of acquisition indicators each indicating one of a positive acknowledgment or a negative acknowledgement corresponding to a respective access attempt by one or more access terminals; storing the acquisition indicators in a memory; determining an overload condition in accordance with the stored acquisition indicators; and backing off from transmitting an access attempt in accordance with the overload condition. - View Dependent Claims (2, 3, 4, 5)
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6. A method of wireless communication operable at a base station, comprising:
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detecting the existence of an overload condition; transmitting an indicator of the overload condition to a core network; receiving an instruction to bar at least a portion of access terminals utilizing a first access service class; and barring at least a portion of access attempts from the access terminals utilizing the first access service class. - View Dependent Claims (7)
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8. An access terminal configured for wireless communication, comprising:
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means for receiving a plurality of acquisition indicators each indicating one of a positive acknowledgment or a negative acknowledgement corresponding to a respective access attempt by one or more access terminals; means for storing the acquisition indicators; means for determining an overload condition in accordance with the stored acquisition indicators; and means for backing off from transmitting an access attempt in accordance with the overload condition. - View Dependent Claims (9, 10, 11, 12)
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13. A base station configured for wireless communication, comprising:
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means for detecting the existence of an overload condition; means for transmitting an indicator of the overload condition to a core network; means for receiving an instruction to bar at least a portion of access terminals utilizing a first access service class; and means for barring at least a portion of access attempts from the access terminals utilizing the first access service class. - View Dependent Claims (14)
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15. A computer program product operable at an access terminal configured for wireless communication, comprising:
a computer-readable medium comprising; instructions for causing a computer to receive a plurality of acquisition indicators each indicating one of a positive acknowledgment or a negative acknowledgement corresponding to a respective access attempt by one or more access terminals; instructions for causing a computer to store the acquisition indicators in a memory; instructions for causing a computer to determine an overload condition in accordance with the stored acquisition indicators; and instructions for causing a computer to back off from transmitting an access attempt in accordance with the overload condition. - View Dependent Claims (16, 17, 18, 19)
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20. A computer program product operable at a base station configured for wireless communication, comprising:
a computer-readable medium comprising; instructions for causing a computer to detect the existence of an overload condition; instructions for causing a computer to transmit an indicator of the overload condition to a core network; instructions for causing a computer to receive an instruction to bar at least a portion of access terminals utilizing a first access service class; and instructions for causing a computer to bar at least a portion of access attempts from the access terminals utilizing the first access service class. - View Dependent Claims (21)
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22. An access terminal configured for wireless communication, comprising:
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a receiver for receiving a plurality of acquisition indicators each indicating one of a positive acknowledgment or a negative acknowledgement corresponding to a respective access attempt by one or more access terminals; at least one processor; and a memory coupled to the at least one processor, wherein the at least one processor is configured to; store the acquisition indicators in a memory; determine an overload condition in accordance with the stored acquisition indicators; and back off from transmitting an access attempt in accordance with the overload condition. - View Dependent Claims (23, 24, 25, 26)
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27. A base station configured for wireless communication, comprising:
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at least one processor; and a memory coupled to the at least one processor, wherein the at least one processor is configured to detect the existence of an overload condition; the base station further comprising a transmitter for transmitting an indicator of the overload condition to a core network, and a receiver for receiving an instruction to bar at least a portion of access terminals utilizing a first access service class, wherein the at least one processor is further configured to bar at least a portion of access attempts from the access terminals utilizing the first access service class. - View Dependent Claims (28)
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Specification