SYSTEM FOR CONTROL, MANAGEMENT, AND TRANSMISSION FOR SOFT HANDOFF IN AN OFDMA-BASED COMMUNICATION SYSTEM
First Claim
1. A method of establishing soft handoff operation for an access terminal operating within an access network, comprising a plurality of sectors, the method comprising the steps of:
- determining which of the plurality of sectors is a serving sector for the access terminal;
assigning an active set of the a plurality of sectors, comprising the serving sector, to the access terminal;
identifying a soft handoff set for the access terminal from the active set;
identifying a soft handoff group for the access terminal from the soft handoff set; and
managing the access terminal'"'"'s transmissions within the access network according to the identified soft handoff group.
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Accused Products
Abstract
A versatile system for controlling and managing resources for Soft Handoff Group operations is disclosed. The system determines which of a plurality of sectors in an access network is a serving sector for an access terminal. An active set of the plurality of sectors is assigned to the access terminal, comprising the serving sector. A soft handoff set for the access terminal is identified from the active set. A soft handoff group for the access terminal is identified from the soft handoff set. The access terminal'"'"'s transmissions within the access network are managed according to the identified soft handoff group.
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Citations
20 Claims
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1. A method of establishing soft handoff operation for an access terminal operating within an access network, comprising a plurality of sectors, the method comprising the steps of:
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determining which of the plurality of sectors is a serving sector for the access terminal;
assigning an active set of the a plurality of sectors, comprising the serving sector, to the access terminal;
identifying a soft handoff set for the access terminal from the active set;
identifying a soft handoff group for the access terminal from the soft handoff set; and
managing the access terminal'"'"'s transmissions within the access network according to the identified soft handoff group. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device adapted to facilitate soft handoff operation for an access terminal operating within an access network, comprising a plurality of sectors, the device comprising:
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structure adapted to determine which of the plurality of sectors is a serving sector for the access terminal;
structure adapted to assign an active set of the a plurality of sectors, comprising the serving sector, to the access terminal;
structure adapted to identify a soft handoff set for the access terminal from the active set;
structure adapted to identify a soft handoff group for the access terminal from the soft handoff set; and
structure adapted to manage the access terminal'"'"'s transmissions within the access network according to the identified soft handoff group. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for soft handoff collaboration between a base station and a mobile station in a wireless communications system, the method comprising the steps of:
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providing protocol messaging structures adapted to facilitate soft handoff transmissions;
providing a scrambling sequence, associated with a specific sector, from the base station to the mobile station on the forward link;
utilizing the scrambling sequence and protocol messaging structures to format, at the mobile station, a request for soft handoff transmission from the specific sector; and
transmitting, via a reverse link control channel, the request for soft handoff transmission from the mobile station to the base station. - View Dependent Claims (16, 17, 18, 19)
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20. A method for facilitating Soft Handoff Group operation in a system utilizing 3GPP2 Strictly Backward Compatible mode of 1xEV-DO Rev. C, particularly OFDM, the method comprising the steps of:
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an access network providing an access terminal with information associated with a Soft Handoff Group set;
enabling the access terminal to operate utilizing a Soft Handoff Group set with multiple macro antennas as a sector that supports multiple input multiple output operation;
utilizing measurement and calculation of Soft Handoff Group set composite channel quality, as determined by the access terminal, to render a Soft Handoff Group switch decision;
transmitting a Soft Handoff Group request from the access terminal through a group rate control channel, which may be a DRC channel.
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Specification