Systems and methods for multimode wireless communication handoff
First Claim
1. A method for performing handover of a mobile station (MS) between network service via first and second radio access technologies (RATs), comprising:
- communicating via the first RAT;
triggering a handover to network service via the second RAT, wherein the first and second RATs are different;
performing one or more actions to facilitate retention of MS information by a base station of the first RAT until completion of the handover to network service via the second RAT; and
entering, by the MS, an idle mode before completing the handover to network service via the second RAT, and before accessing network service via the second RAT during the handover.
1 Assignment
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Accused Products
Abstract
Methods and apparatus for easily and quickly returning to a first radio access technology (RAT) network when handover to a second RAT network is cancelled are provided. The methods and apparatus may involve a mobile station (MS) entering idle mode before handover to the second RAT network is completed and requesting a serving base station (BS) to retain MS service and operational information, as well as service flow state information. In this manner, should handover to the second RAT network be cancelled before completion, a re-entry to the first RAT network may be expeditiously performed using the retained MS information.
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Citations
38 Claims
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1. A method for performing handover of a mobile station (MS) between network service via first and second radio access technologies (RATs), comprising:
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communicating via the first RAT; triggering a handover to network service via the second RAT, wherein the first and second RATs are different; performing one or more actions to facilitate retention of MS information by a base station of the first RAT until completion of the handover to network service via the second RAT; and entering, by the MS, an idle mode before completing the handover to network service via the second RAT, and before accessing network service via the second RAT during the handover. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for performing handover of a mobile station (MS) between network service via first and second radio access technologies (RATs), comprising:
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means for communicating via the first RAT; means for triggering a handover to network service via the second RAT, wherein the first and second RATs are different; means for performing one or more actions to facilitate retention of MS information by a base station of the first RAT until completion of the handover to network service via the second RAT; and means for entering, by the MS, an idle mode before completing the handover to network service via the second RAT, and before accessing network service via the second RAT during the handover. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus for performing handover of a mobile station (MS) between network service via first and second radio access technologies (RATs), comprising:
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a processor; memory in electronic communication with the processor; and instructions stored in the memory and executable by the processor to; communicate via the first RAT; trigger a handover to network service via the second RAT, wherein the first and second RATs are different; perform one or more actions to facilitate retention of MS information by a base station of the first RAT until completion of the handover to network service via the second RAT; and logic for entering, by the MS, an idle mode before completing the handover to network service via the second RAT, and before accessing network service via the second RAT during the handover. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A computer-program product for performing handover of a mobile station (MS) between network service via first and second radio access technologies (RATs), the computer-program product comprising a non-transitory computer-readable medium having instructions stored thereon, the instructions being executable by one or more processors and the instructions comprising:
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instructions for communicating via the first RAT; instructions for triggering a handover to network service via the second RAT, wherein the first and second RATs are different; instructions for performing one or more actions to facilitate retentioin of MS information by a base station of the first RAT until completion of the handover to network service via the second RAT; and instructions for entering, by the MS, an idle mode before completing the handover to network service via the second RAT, and before accessing network service via the second RAT during the handover. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A method comprising:
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communicating by a mobile station (MS) via a first radio access technologies (RAT);
triggering a handover attempt by the MS to network service via a second RAT, wherein the first and second RATs are different;performing one or more actions to facilitate retention of MS information by a base station of the first RAT until completion of the handover to network service via the second RAT, wherein performing the one or more actions comprises requesting network service via the first RAT to retain the MS information before entering an idle mode; entering, by the MS, the idle mode before completing the handover to network service via the second RAT; canceling the handover of the mobile station to network service via the second RAT before completing the handover; receiving the retained MS information; and performing network re-entry using the received retained MS information to restore communication via the first RAT. - View Dependent Claims (30, 31, 32, 33)
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34. An apparatus comprising:
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means for communicating by a mobile station (MS) via a first radio access technologies (RAT); means for triggering a handover attempt by the MS to network service via a second RAT, wherein the first and second RATs are different; means for performing one or more actions to facilitate retention of MS information by a base station of the first RAT until completion of the handover to network service via the second RAT, wherein the means for performing one or more actions comprises means for requesting network service via the first RAT to retain the MS information before entering an idle mode; means for entering, by the MS, the idle mode before completing the handover to network service via the second RAT; means for canceling the handover of the mobile station to network service via the second RAT before completing the handover; means for receiving the retained MS information; and means for performing network re-entry using the received retained MS information to restore communication via the first RAT. - View Dependent Claims (35, 36, 37, 38)
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Specification