초록 ▼

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 col

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.

대표청구항 ▼

What is claimed is: 1. A method for accessing a base station from a mobile station in a communication system, comprising: selecting a signature sequence from a plurality of signature sequences; modulating said selected signature sequence with a request portion of an access probe; transmitting said

What is claimed is: 1. A method for accessing a base station from a mobile station in a communication system, comprising: selecting a signature sequence from a plurality of signature sequences; modulating said selected signature sequence with a request portion of an access probe; transmitting said modulated request portion over a reverse link common control channel; receiving a channel assignment message from said base station designating a reserved access channel, said reserved access channel providing communication with a low probability of contention and said channel assignment message reflecting said selected signature; transmitting a message portion of said access probe over said reserved access channel; receiving a power control command over a forward link channel associated with said reserved access channel; and responding to said power control command by increasing or decreasing a power level at which said mobile station transmits said message portion. 2. The method of claim 1, wherein said transmitting said message portion occurs at one of a plurality of available data rates. 3. The method of claim 1, wherein said request portion comprises an identification which quasi-uniquely identifies a transmitter of said request. 4. The method of claim 3, further comprising determining said identification which quasi-uniquely identifies said transmitter of said request from a unique identifying number associated with said transmitter of said request using a hash function. 5. The method of claim 3, further comprising randomly selecting said identification which quasi-uniquely identifies said transmitter of said request. 6. An apparatus for accessing a base station from a mobile station in a communication system, comprising: means for selecting a signature sequence from a plurality of signature sequences; a modulator for modulating said selected signature sequence with a request portion of an access probe; a transmitter for transmitting said modulated request portion over a reverse link common control channel; a receiver for receiving a channel assignment message from said base station designating a reserved access channel, said reserved access channel providing communication with a low probability of contention and said channel assignment message reflecting said selected signature; said transmitter further for transmitting a message portion of said access probe over said reserved access channel; said receiver further for receiving a power control command over a forward link channel associated with said reserved access channel; and means for responding to said power control command by increasing or decreasing a power level at which said mobile station transmits said message portion. 7. The apparatus of claim 6, wherein said transmitter further for transmitting said message portion at one of a plurality of available data rates. 8. A method for accessing a base station from a mobile station in a communication system, comprising: receiving a modulated request portion over a reverse link common control channel, wherein modulated request portion is modulated with a selected signature sequence; transmitting a channel assignment message from said base station designating a reserved access channel, said reserved access channel providing communication with a low probability of contention and said channel assignment message reflecting said selected signature; receiving a message portion of access probe over said reserved access channel; transmitting a power control command over a forward link channel associated with said reserved access channel for increasing or decreasing a power level at which said mobile station transmits said message portion. 9. The method of claim 8, wherein said receiving said message portion occurs at one of a plurality of available data rates. 10. An apparatus for accessing a base station from a mobile station in a communication system, comprising: a receiver for receiving a modulated request portion over a reverse link common control channel, wherein modulated request portion is modulated with a selected signature sequence; a transmitter for transmitting a channel assignment message from said base station designating a reserved access channel, said reserved access channel providing communication with a low probability of contention and said channel assignment message reflecting said selected signature; said receiver further for receiving a message portion of access probe over said reserved access channel; said transmitter further for transmitting a power control command over a forward link channel associated with said reserved access channel for increasing or decreasing a power level at which said mobile station transmits said message portion. 11. The apparatus of claim 8, wherein said receiver further for receiving said message portion at one of a plurality of available data rates.