METHOD AND APPARATUS FOR REDUCING SUCCESSIVE PRE-REGISTRATION ATTEMPTS BY ACCESS TERMINALS
First Claim
1. A method operational in an access terminal, comprising:
- starting a timer after a pre-registration with a second access network is performed by the access terminal via a first access network;
preventing additional pre-registrations with the second access network prior to expiration of the timer unless an abort condition occurs; and
performing a second pre-registration prior to the expiration of the timer if an abort condition has occurred.
1 Assignment
0 Petitions
Accused Products
Abstract
An access terminal pre-registers with a second access network via a first access network to ensure a quick handover in the future. Frequent pre-registration attempts are avoided by implementing a hysteresis timer that restricts when a pre-registration process can be initiated. The hysteresis timer is started when pre-registration is initiated by the access terminal. No new pre-registration attempts are permitted if the hysteresis timer has not expired. An abort condition can cause the hysteresis timer to be aborted early, and a new pre-registration can be initiated. Access points in the first access network may be grouped into one or more pre-registration zones. If the access terminal moves from a first access point to a second access point, a new pre-registration is skipped if the first and second access points have the same pre-registration zone or the second access point is aware of the pre-registration zone for the first access point.
50 Citations
41 Claims
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1. A method operational in an access terminal, comprising:
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starting a timer after a pre-registration with a second access network is performed by the access terminal via a first access network; preventing additional pre-registrations with the second access network prior to expiration of the timer unless an abort condition occurs; and performing a second pre-registration prior to the expiration of the timer if an abort condition has occurred. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An access terminal, comprising:
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a wireless communication interface having multi-mode capabilities to communicate over a first access network and a second access network; a processing circuit coupled to the wireless communication interface, the processing circuit adapted to start a timer after a pre-registration with the second access network is performed by the access terminal via the first access network; prevent additional pre-registrations with the second access network prior to expiration of the timer unless an abort condition occurs; and perform a second pre-registration prior to the expiration of the timer if an abort condition occurs. - View Dependent Claims (19, 20, 21, 22)
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23. An access terminal, comprising:
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means for starting a timer after a pre-registration with a second access network is performed by the access terminal via a first access network; means for preventing additional pre-registrations with the second access network prior to expiration of the timer unless an abort condition occurs; and means for performing a second pre-registration prior to the expiration of the timer if an abort condition has occurred.
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24. A method operational in an access point of a first access network, comprising:
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obtaining a first pre-registration zone identifier, where the first pre-registration zone identifier identifies a group of access points within the first access network; obtaining a secondary pre-registration zone list that includes zone identifiers associated with the first pre-registration zone identifier; and advertising the first pre-registration zone identifier and the secondary pre-registration zone list to one or more access terminals in a cell covered by the access point. - View Dependent Claims (25, 26)
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27. An access point, comprising:
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a wireless network interface to communicate with access terminals in a cell within a first access network; a network interface to communicate with a second access network; and a processing circuit coupled to the wireless network interface and the network interface, the processing circuit adapted to obtain a first pre-registration zone identifier, where the pre-registration zone identifier identifies a group of access points within the first access network; obtain a secondary pre-registration zone list that includes zone identifiers associated with the first pre-registration zone identifier; and advertise the first pre-registration zone identifier and the secondary pre-registration zone list to one or more access terminals in a cell covered by the access point. - View Dependent Claims (28)
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29. An access point, comprising:
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means for obtaining a first pre-registration zone identifier, where the pre-registration zone identifier identifies a group of access points within a first access network; means for obtaining a secondary pre-registration zone list that includes zone identifiers associated with the first pre-registration zone identifier; and means for advertising the first pre-registration zone identifier and the secondary pre-registration zone list to one or more access terminals in a cell covered by the access point. - View Dependent Claims (30)
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31. A method operational in a network server of a first access network, comprising:
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grouping a plurality of cells in a first access network into one or more cell groups; associating a first cell group with a first pre-registration zone; generating a secondary zone list for the first pre-registration zone, where the secondary zone list excludes the first pre-registration zone; and distributing the first pre-registration zone and the secondary zone list to access points within the cells for the first cell group. - View Dependent Claims (32, 33)
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34. A network server, comprising:
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an intra-network interface to communicate with access points within a first access network; an inter-network interface to communicate with a second access network; and a processing circuit coupled to the intra-network interface and the inter-network interface, the processing circuit adapted to group a plurality of cells in a first access network into one or more cell groups; associate a first cell group with a first pre-registration zone; generate a secondary zone list for the first pre-registration zone, where the secondary zone list excludes the first pre-registration zone; and distribute the first pre-registration zone and the secondary zone list to access points within the cells for the first cell group. - View Dependent Claims (35)
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36. A network server, comprising:
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means for grouping a plurality of cells in a first access network into one or more cell groups; means for associating a first cell group with a first pre-registration zone; means for generating a secondary zone list for the first pre-registration zone, where the secondary zone list excludes the first pre-registration zone; and means for distributing the first pre-registration zone and the secondary zone list to access points within the cells for the first cell group.
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37. A method for deploying access points and pre-registration zones within a first access network, comprising:
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advertising a first pre-registration zone identifier from a first group of access points; advertising a second pre-registration zone identifier from a second group of access points; and deploying a third group of access points to form a boundary zone between the first group of access points and the second group of access points. - View Dependent Claims (38, 39, 40, 41)
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Specification