Techniques for accessing a wireless communication system with tune-away capability
First Claim
1. An apparatus comprising:
- a controller configured to determine a protected time interval when an access request can be sent to a first communication system, determine a starting time for sending the access request such that the protected time interval does not overlap a tune-away interval, and initiate sending the access request to the first communication system at the starting time.
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Abstract
To access a first communication system, a terminal determines a transmission time for an access probe, an expected response time from the system, and a protected time interval based on the transmission time and/or expected response time. The terminal determines a starting time for sending the access probe such that the protected time interval does not overlap a tune-away interval in which the terminal is to monitor anther frequency/air-interface. This starting time may be set initially to the end of a prior access probe plus a pseudo-random wait duration and may be advanced forward or moved backward in time, if needed, by a time duration selected such that the protected time interval does not overlap the tune-away interval.
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Citations
29 Claims
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1. An apparatus comprising:
a controller configured to determine a protected time interval when an access request can be sent to a first communication system, determine a starting time for sending the access request such that the protected time interval does not overlap a tune-away interval, and initiate sending the access request to the first communication system at the starting time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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determining a protected time interval for an access request to be sent to a first communication system, the protected time interval being a time interval in which a receiver is tuned to the first communication system;
determining a starting time for sending the access request such that the protected time interval does not overlap a tune-away interval, the tune-away interval being a time interval in which the receiver is tuned away from the first communication system; and
sending the access request to the first communication system at the starting time. - View Dependent Claims (14, 15, 16)
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17. An apparatus comprising:
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means for determining a protected time interval for an access request to be sent to a first communication system, the protected time interval being a time interval in which a receiver is tuned to the first communication system;
means for determining a starting time for sending the access request such that the protected time interval does not overlap a tune-away interval, the tune-away interval being a time interval in which the receiver is tuned away from the first communication system; and
means for sending the access request to the first communication system at the starting time. - View Dependent Claims (18, 19, 20)
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21. An article comprising a machine-readable media including machine-executable instructions to cause a processor in a wireless device to:
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determine a protected time interval for an access request to be sent to a first communication system, the protected time interval being a time interval in which a receiver is tuned to the first communication system;
determine a starting time for sending the access request such that the protected time interval does not overlap a tune-away interval, the tune-away interval being a time interval in which the receiver is tuned away from the first communication system; and
direct transmission of the access request to the first communication system at the starting time. - View Dependent Claims (22, 23, 24)
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25. A method of performing system access, comprising:
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determining a protected time interval for an access request to be sent to a data only communication system, the protected time interval being a time interval in which a receiver is tuned to the data only system;
determining a starting access channel cycle for sending the access request such that the protected time interval does not overlap a tune-away interval, the tune-away interval being a time interval in which the receiver is tuned to a data and voice communication system; and
sending the access request to the data only system at the starting access channel cycle. - View Dependent Claims (26, 27, 28, 29)
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Specification