Reservation multiple access
First Claim
1. A method for accessing a base station performed at a mobile station in a communication system, comprising:
- transmitting, using a controller, an access request utilizing a selected signature sequence from the mobile station;
determining if a channel assignment message, which is responsive to the access request and is modulated with the selected signature sequence or a signature associated with the selected signature sequence, is received from the base station; and
transmitting another access request utilizing the selected signature sequence, if the channel assignment message is determined as not being received.
1 Assignment
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Accused Products
Abstract
A mobile station accesses a base station by randomly selecting a first reverse link common control channel from a set of random access channels. The mobile station transmits a request portion of an access probe over the first reverse link common control channel. The request portion is subject to collision with other signals. The request portion comprises a hash identification which is derived from a uniquely identifying number using a hash function. The hash identification quasi-uniquely identifies the mobile station. The mobile station receives a channel assignment message from the base station designating the hash identification and a reserved access channel. The reserved access channel provides communication with a low probability of contention. The mobile station transmits a message portion of the access probe over the reserved access channel.
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Citations
20 Claims
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1. A method for accessing a base station performed at a mobile station in a communication system, comprising:
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transmitting, using a controller, an access request utilizing a selected signature sequence from the mobile station; determining if a channel assignment message, which is responsive to the access request and is modulated with the selected signature sequence or a signature associated with the selected signature sequence, is received from the base station; and transmitting another access request utilizing the selected signature sequence, if the channel assignment message is determined as not being received. - View Dependent Claims (2, 3, 4, 5)
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6. A mobile station operative to communicate with a base station in a communication system, the mobile station comprising:
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a modulator configure to modulate a selected signature sequence in an access request; a transmitter configured to transmit the access request; and a controller configured to determine if a channel assignment message, which is responsive to the access request and is modulated with the selected signature sequence or a signature associated with the selected signature sequence, from a base station is received and wherein the transmitter is configured to transmit another access request utilizing the selected signature sequence, if the channel assignment message is determined as not being received by the controller. - View Dependent Claims (7, 8, 9, 10)
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11. An apparatus operative to communicate with a base station in a communication system, the apparatus comprising:
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means for transmitting an access request utilizing a selected signature sequence from a mobile station; means for determining if a channel assignment message, which is responsive to the access request and is modulated with the selected signature sequence or a signature associated with the selected signature sequence, is received from a base station; and a transmitter configured to transmit another access request utilizing the selected signature sequence, if the channel assignment message is determined as not being received. - View Dependent Claims (12, 13, 14, 15)
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16. A non-transitory computer-readable media comprising instructions that are utilized by a controller in a mobile station operative to communicate with a base station in a communication system, the instructions comprising:
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instructions for transmitting an access request utilizing a selected signature sequence from a mobile station; instructions for determining if a channel assignment message, which is responsive to the access request and is modulated with the selected signature sequence or a signature associated with the selected signature sequence utilizing the selected signature sequence, is received from a base station; and instructions for transmitting another access request, if the channel assignment message is determined as not being received. - View Dependent Claims (17, 18, 19, 20)
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Specification